/* * Driver interaction with Linux nl80211/cfg80211 * Copyright (c) 2002-2012, Jouni Malinen * Copyright (c) 2003-2004, Instant802 Networks, Inc. * Copyright (c) 2005-2006, Devicescape Software, Inc. * Copyright (c) 2007, Johannes Berg * Copyright (c) 2009-2010, Atheros Communications * * This software may be distributed under the terms of the BSD license. * See README for more details. */ #include "includes.h" #include #include #include #include #include #include #include #include #include #include #include #include #include "nl80211_copy.h" #include "common.h" #include "eloop.h" #include "utils/list.h" #include "common/ieee802_11_defs.h" #include "common/ieee802_11_common.h" #include "l2_packet/l2_packet.h" #include "netlink.h" #include "linux_ioctl.h" #include "radiotap.h" #include "radiotap_iter.h" #include "rfkill.h" #include "driver.h" #ifndef SO_WIFI_STATUS # if defined(__sparc__) # define SO_WIFI_STATUS 0x0025 # elif defined(__parisc__) # define SO_WIFI_STATUS 0x4022 # else # define SO_WIFI_STATUS 41 # endif # define SCM_WIFI_STATUS SO_WIFI_STATUS #endif #ifndef SO_EE_ORIGIN_TXSTATUS #define SO_EE_ORIGIN_TXSTATUS 4 #endif #ifndef PACKET_TX_TIMESTAMP #define PACKET_TX_TIMESTAMP 16 #endif #ifdef ANDROID #include "android_drv.h" #endif /* ANDROID */ #ifdef CONFIG_LIBNL20 /* libnl 2.0 compatibility code */ #define nl_handle nl_sock #define nl80211_handle_alloc nl_socket_alloc_cb #define nl80211_handle_destroy nl_socket_free #else /* * libnl 1.1 has a bug, it tries to allocate socket numbers densely * but when you free a socket again it will mess up its bitmap and * and use the wrong number the next time it needs a socket ID. * Therefore, we wrap the handle alloc/destroy and add our own pid * accounting. */ static uint32_t port_bitmap[32] = { 0 }; static struct nl_handle *nl80211_handle_alloc(void *cb) { struct nl_handle *handle; uint32_t pid = getpid() & 0x3FFFFF; int i; handle = nl_handle_alloc_cb(cb); for (i = 0; i < 1024; i++) { if (port_bitmap[i / 32] & (1 << (i % 32))) continue; port_bitmap[i / 32] |= 1 << (i % 32); pid += i << 22; break; } nl_socket_set_local_port(handle, pid); return handle; } static void nl80211_handle_destroy(struct nl_handle *handle) { uint32_t port = nl_socket_get_local_port(handle); port >>= 22; port_bitmap[port / 32] &= ~(1 << (port % 32)); nl_handle_destroy(handle); } #endif /* CONFIG_LIBNL20 */ static struct nl_handle * nl_create_handle(struct nl_cb *cb, const char *dbg) { struct nl_handle *handle; handle = nl80211_handle_alloc(cb); if (handle == NULL) { wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink " "callbacks (%s)", dbg); return NULL; } if (genl_connect(handle)) { wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic " "netlink (%s)", dbg); nl80211_handle_destroy(handle); return NULL; } return handle; } static void nl_destroy_handles(struct nl_handle **handle) { if (*handle == NULL) return; nl80211_handle_destroy(*handle); *handle = NULL; } #ifndef IFF_LOWER_UP #define IFF_LOWER_UP 0x10000 /* driver signals L1 up */ #endif #ifndef IFF_DORMANT #define IFF_DORMANT 0x20000 /* driver signals dormant */ #endif #ifndef IF_OPER_DORMANT #define IF_OPER_DORMANT 5 #endif #ifndef IF_OPER_UP #define IF_OPER_UP 6 #endif struct nl80211_global { struct dl_list interfaces; int if_add_ifindex; struct netlink_data *netlink; struct nl_cb *nl_cb; struct nl_handle *nl; int nl80211_id; int ioctl_sock; /* socket for ioctl() use */ struct nl_handle *nl_event; }; struct nl80211_wiphy_data { struct dl_list list; struct dl_list bsss; struct dl_list drvs; struct nl_handle *nl_beacons; struct nl_cb *nl_cb; int wiphy_idx; }; static void nl80211_global_deinit(void *priv); static void wpa_driver_nl80211_deinit(void *priv); struct i802_bss { struct wpa_driver_nl80211_data *drv; struct i802_bss *next; int ifindex; char ifname[IFNAMSIZ + 1]; char brname[IFNAMSIZ]; unsigned int beacon_set:1; unsigned int added_if_into_bridge:1; unsigned int added_bridge:1; unsigned int in_deinit:1; u8 addr[ETH_ALEN]; int freq; struct nl_handle *nl_preq, *nl_mgmt; struct nl_cb *nl_cb; struct nl80211_wiphy_data *wiphy_data; struct dl_list wiphy_list; }; struct wpa_driver_nl80211_data { struct nl80211_global *global; struct dl_list list; struct dl_list wiphy_list; char phyname[32]; void *ctx; int ifindex; int if_removed; int if_disabled; int ignore_if_down_event; struct rfkill_data *rfkill; struct wpa_driver_capa capa; int has_capability; int operstate; int scan_complete_events; struct nl_cb *nl_cb; u8 auth_bssid[ETH_ALEN]; u8 bssid[ETH_ALEN]; int associated; u8 ssid[32]; size_t ssid_len; enum nl80211_iftype nlmode; enum nl80211_iftype ap_scan_as_station; unsigned int assoc_freq; int monitor_sock; int monitor_ifidx; int monitor_refcount; unsigned int disabled_11b_rates:1; unsigned int pending_remain_on_chan:1; unsigned int in_interface_list:1; unsigned int device_ap_sme:1; unsigned int poll_command_supported:1; unsigned int data_tx_status:1; unsigned int scan_for_auth:1; unsigned int retry_auth:1; unsigned int use_monitor:1; u64 remain_on_chan_cookie; u64 send_action_cookie; unsigned int last_mgmt_freq; struct wpa_driver_scan_filter *filter_ssids; size_t num_filter_ssids; struct i802_bss first_bss; int eapol_tx_sock; #ifdef HOSTAPD int eapol_sock; /* socket for EAPOL frames */ int default_if_indices[16]; int *if_indices; int num_if_indices; int last_freq; int last_freq_ht; #endif /* HOSTAPD */ /* From failed authentication command */ int auth_freq; u8 auth_bssid_[ETH_ALEN]; u8 auth_ssid[32]; size_t auth_ssid_len; int auth_alg; u8 *auth_ie; size_t auth_ie_len; u8 auth_wep_key[4][16]; size_t auth_wep_key_len[4]; int auth_wep_tx_keyidx; int auth_local_state_change; int auth_p2p; }; static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, void *timeout_ctx); static int wpa_driver_nl80211_set_mode(struct i802_bss *bss, enum nl80211_iftype nlmode); static int wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv); static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv, const u8 *addr, int cmd, u16 reason_code, int local_state_change); static void nl80211_remove_monitor_interface( struct wpa_driver_nl80211_data *drv); static int nl80211_send_frame_cmd(struct i802_bss *bss, unsigned int freq, unsigned int wait, const u8 *buf, size_t buf_len, u64 *cookie, int no_cck, int no_ack, int offchanok); static int wpa_driver_nl80211_probe_req_report(void *priv, int report); #ifdef ANDROID static int android_pno_start(struct i802_bss *bss, struct wpa_driver_scan_params *params); static int android_pno_stop(struct i802_bss *bss); #endif /* ANDROID */ #ifdef ANDROID_P2P #ifdef LEGACY_STA_EVENTS static void mlme_event_deauth_disassoc(struct wpa_driver_nl80211_data *drv, enum wpa_event_type type, const u8 *frame, size_t len); #endif /* LEGACY_STA_EVENTS */ int wpa_driver_set_p2p_noa(void *priv, u8 count, int start, int duration); int wpa_driver_get_p2p_noa(void *priv, u8 *buf, size_t len); int wpa_driver_set_p2p_ps(void *priv, int legacy_ps, int opp_ps, int ctwindow); int wpa_driver_set_ap_wps_p2p_ie(void *priv, const struct wpabuf *beacon, const struct wpabuf *proberesp, const struct wpabuf *assocresp); #endif #ifdef HOSTAPD static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx); static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx); static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx); static int wpa_driver_nl80211_if_remove(void *priv, enum wpa_driver_if_type type, const char *ifname); #else /* HOSTAPD */ static inline void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx) { } static inline void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx) { } static inline int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx) { return 0; } #endif /* HOSTAPD */ #ifdef ANDROID extern int wpa_driver_nl80211_driver_cmd(void *priv, char *cmd, char *buf, size_t buf_len); #endif static int i802_set_freq(void *priv, struct hostapd_freq_params *freq); static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv, int ifindex, int disabled); static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv); static int wpa_driver_nl80211_authenticate_retry( struct wpa_driver_nl80211_data *drv); static int is_ap_interface(enum nl80211_iftype nlmode) { return (nlmode == NL80211_IFTYPE_AP || nlmode == NL80211_IFTYPE_P2P_GO); } static int is_sta_interface(enum nl80211_iftype nlmode) { return (nlmode == NL80211_IFTYPE_STATION || nlmode == NL80211_IFTYPE_P2P_CLIENT); } static int is_p2p_interface(enum nl80211_iftype nlmode) { return (nlmode == NL80211_IFTYPE_P2P_CLIENT || nlmode == NL80211_IFTYPE_P2P_GO); } struct nl80211_bss_info_arg { struct wpa_driver_nl80211_data *drv; struct wpa_scan_results *res; unsigned int assoc_freq; u8 assoc_bssid[ETH_ALEN]; }; static int bss_info_handler(struct nl_msg *msg, void *arg); /* nl80211 code */ static int ack_handler(struct nl_msg *msg, void *arg) { int *err = arg; *err = 0; return NL_STOP; } static int finish_handler(struct nl_msg *msg, void *arg) { int *ret = arg; *ret = 0; return NL_SKIP; } static int error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err, void *arg) { int *ret = arg; *ret = err->error; return NL_SKIP; } static int no_seq_check(struct nl_msg *msg, void *arg) { return NL_OK; } static int send_and_recv(struct nl80211_global *global, struct nl_handle *nl_handle, struct nl_msg *msg, int (*valid_handler)(struct nl_msg *, void *), void *valid_data) { struct nl_cb *cb; int err = -ENOMEM; cb = nl_cb_clone(global->nl_cb); if (!cb) goto out; err = nl_send_auto_complete(nl_handle, msg); if (err < 0) goto out; err = 1; nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err); nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err); nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &err); if (valid_handler) nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, valid_handler, valid_data); while (err > 0) nl_recvmsgs(nl_handle, cb); out: nl_cb_put(cb); nlmsg_free(msg); return err; } static int send_and_recv_msgs_global(struct nl80211_global *global, struct nl_msg *msg, int (*valid_handler)(struct nl_msg *, void *), void *valid_data) { return send_and_recv(global, global->nl, msg, valid_handler, valid_data); } #ifndef ANDROID static #endif int send_and_recv_msgs(struct wpa_driver_nl80211_data *drv, struct nl_msg *msg, int (*valid_handler)(struct nl_msg *, void *), void *valid_data) { return send_and_recv(drv->global, drv->global->nl, msg, valid_handler, valid_data); } struct family_data { const char *group; int id; }; static int family_handler(struct nl_msg *msg, void *arg) { struct family_data *res = arg; struct nlattr *tb[CTRL_ATTR_MAX + 1]; struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); struct nlattr *mcgrp; int i; nla_parse(tb, CTRL_ATTR_MAX, genlmsg_attrdata(gnlh, 0), genlmsg_attrlen(gnlh, 0), NULL); if (!tb[CTRL_ATTR_MCAST_GROUPS]) return NL_SKIP; nla_for_each_nested(mcgrp, tb[CTRL_ATTR_MCAST_GROUPS], i) { struct nlattr *tb2[CTRL_ATTR_MCAST_GRP_MAX + 1]; nla_parse(tb2, CTRL_ATTR_MCAST_GRP_MAX, nla_data(mcgrp), nla_len(mcgrp), NULL); if (!tb2[CTRL_ATTR_MCAST_GRP_NAME] || !tb2[CTRL_ATTR_MCAST_GRP_ID] || os_strncmp(nla_data(tb2[CTRL_ATTR_MCAST_GRP_NAME]), res->group, nla_len(tb2[CTRL_ATTR_MCAST_GRP_NAME])) != 0) continue; res->id = nla_get_u32(tb2[CTRL_ATTR_MCAST_GRP_ID]); break; }; return NL_SKIP; } static int nl_get_multicast_id(struct nl80211_global *global, const char *family, const char *group) { struct nl_msg *msg; int ret = -1; struct family_data res = { group, -ENOENT }; msg = nlmsg_alloc(); if (!msg) return -ENOMEM; genlmsg_put(msg, 0, 0, genl_ctrl_resolve(global->nl, "nlctrl"), 0, 0, CTRL_CMD_GETFAMILY, 0); NLA_PUT_STRING(msg, CTRL_ATTR_FAMILY_NAME, family); ret = send_and_recv_msgs_global(global, msg, family_handler, &res); msg = NULL; if (ret == 0) ret = res.id; nla_put_failure: nlmsg_free(msg); return ret; } static void * nl80211_cmd(struct wpa_driver_nl80211_data *drv, struct nl_msg *msg, int flags, uint8_t cmd) { return genlmsg_put(msg, 0, 0, drv->global->nl80211_id, 0, flags, cmd, 0); } struct wiphy_idx_data { int wiphy_idx; }; static int netdev_info_handler(struct nl_msg *msg, void *arg) { struct nlattr *tb[NL80211_ATTR_MAX + 1]; struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); struct wiphy_idx_data *info = arg; nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), genlmsg_attrlen(gnlh, 0), NULL); if (tb[NL80211_ATTR_WIPHY]) info->wiphy_idx = nla_get_u32(tb[NL80211_ATTR_WIPHY]); return NL_SKIP; } static int nl80211_get_wiphy_index(struct i802_bss *bss) { struct nl_msg *msg; struct wiphy_idx_data data = { .wiphy_idx = -1, }; msg = nlmsg_alloc(); if (!msg) return -1; nl80211_cmd(bss->drv, msg, 0, NL80211_CMD_GET_INTERFACE); NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); if (send_and_recv_msgs(bss->drv, msg, netdev_info_handler, &data) == 0) return data.wiphy_idx; msg = NULL; nla_put_failure: nlmsg_free(msg); return -1; } static int nl80211_register_beacons(struct wpa_driver_nl80211_data *drv, struct nl80211_wiphy_data *w) { struct nl_msg *msg; int ret = -1; msg = nlmsg_alloc(); if (!msg) return -1; nl80211_cmd(drv, msg, 0, NL80211_CMD_REGISTER_BEACONS); NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, w->wiphy_idx); ret = send_and_recv(drv->global, w->nl_beacons, msg, NULL, NULL); msg = NULL; if (ret) { wpa_printf(MSG_DEBUG, "nl80211: Register beacons command " "failed: ret=%d (%s)", ret, strerror(-ret)); goto nla_put_failure; } ret = 0; nla_put_failure: nlmsg_free(msg); return ret; } static void nl80211_recv_beacons(int sock, void *eloop_ctx, void *handle) { struct nl80211_wiphy_data *w = eloop_ctx; wpa_printf(MSG_EXCESSIVE, "nl80211: Beacon event message available"); nl_recvmsgs(handle, w->nl_cb); } static int process_beacon_event(struct nl_msg *msg, void *arg) { struct nl80211_wiphy_data *w = arg; struct wpa_driver_nl80211_data *drv; struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); struct nlattr *tb[NL80211_ATTR_MAX + 1]; union wpa_event_data event; nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), genlmsg_attrlen(gnlh, 0), NULL); if (gnlh->cmd != NL80211_CMD_FRAME) { wpa_printf(MSG_DEBUG, "nl80211: Unexpected beacon event? (%d)", gnlh->cmd); return NL_SKIP; } if (!tb[NL80211_ATTR_FRAME]) return NL_SKIP; dl_list_for_each(drv, &w->drvs, struct wpa_driver_nl80211_data, wiphy_list) { os_memset(&event, 0, sizeof(event)); event.rx_mgmt.frame = nla_data(tb[NL80211_ATTR_FRAME]); event.rx_mgmt.frame_len = nla_len(tb[NL80211_ATTR_FRAME]); wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event); } return NL_SKIP; } static struct nl80211_wiphy_data * nl80211_get_wiphy_data_ap(struct i802_bss *bss) { static DEFINE_DL_LIST(nl80211_wiphys); struct nl80211_wiphy_data *w; int wiphy_idx, found = 0; struct i802_bss *tmp_bss; if (bss->wiphy_data != NULL) return bss->wiphy_data; wiphy_idx = nl80211_get_wiphy_index(bss); dl_list_for_each(w, &nl80211_wiphys, struct nl80211_wiphy_data, list) { if (w->wiphy_idx == wiphy_idx) goto add; } /* alloc new one */ w = os_zalloc(sizeof(*w)); if (w == NULL) return NULL; w->wiphy_idx = wiphy_idx; dl_list_init(&w->bsss); dl_list_init(&w->drvs); w->nl_cb = nl_cb_alloc(NL_CB_DEFAULT); if (!w->nl_cb) { os_free(w); return NULL; } nl_cb_set(w->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, no_seq_check, NULL); nl_cb_set(w->nl_cb, NL_CB_VALID, NL_CB_CUSTOM, process_beacon_event, w); w->nl_beacons = nl_create_handle(bss->drv->global->nl_cb, "wiphy beacons"); if (w->nl_beacons == NULL) { os_free(w); return NULL; } if (nl80211_register_beacons(bss->drv, w)) { nl_destroy_handles(&w->nl_beacons); os_free(w); return NULL; } eloop_register_read_sock(nl_socket_get_fd(w->nl_beacons), nl80211_recv_beacons, w, w->nl_beacons); dl_list_add(&nl80211_wiphys, &w->list); add: /* drv entry for this bss already there? */ dl_list_for_each(tmp_bss, &w->bsss, struct i802_bss, wiphy_list) { if (tmp_bss->drv == bss->drv) { found = 1; break; } } /* if not add it */ if (!found) dl_list_add(&w->drvs, &bss->drv->wiphy_list); dl_list_add(&w->bsss, &bss->wiphy_list); bss->wiphy_data = w; return w; } static void nl80211_put_wiphy_data_ap(struct i802_bss *bss) { struct nl80211_wiphy_data *w = bss->wiphy_data; struct i802_bss *tmp_bss; int found = 0; if (w == NULL) return; bss->wiphy_data = NULL; dl_list_del(&bss->wiphy_list); /* still any for this drv present? */ dl_list_for_each(tmp_bss, &w->bsss, struct i802_bss, wiphy_list) { if (tmp_bss->drv == bss->drv) { found = 1; break; } } /* if not remove it */ if (!found) dl_list_del(&bss->drv->wiphy_list); if (!dl_list_empty(&w->bsss)) return; eloop_unregister_read_sock(nl_socket_get_fd(w->nl_beacons)); nl_cb_put(w->nl_cb); nl_destroy_handles(&w->nl_beacons); dl_list_del(&w->list); os_free(w); } static int wpa_driver_nl80211_get_bssid(void *priv, u8 *bssid) { struct i802_bss *bss = priv; struct wpa_driver_nl80211_data *drv = bss->drv; if (!drv->associated) return -1; os_memcpy(bssid, drv->bssid, ETH_ALEN); return 0; } static int wpa_driver_nl80211_get_ssid(void *priv, u8 *ssid) { struct i802_bss *bss = priv; struct wpa_driver_nl80211_data *drv = bss->drv; if (!drv->associated) return -1; os_memcpy(ssid, drv->ssid, drv->ssid_len); return drv->ssid_len; } static void wpa_driver_nl80211_event_link(struct wpa_driver_nl80211_data *drv, char *buf, size_t len, int del) { union wpa_event_data event; os_memset(&event, 0, sizeof(event)); if (len > sizeof(event.interface_status.ifname)) len = sizeof(event.interface_status.ifname) - 1; os_memcpy(event.interface_status.ifname, buf, len); event.interface_status.ievent = del ? EVENT_INTERFACE_REMOVED : EVENT_INTERFACE_ADDED; wpa_printf(MSG_DEBUG, "RTM_%sLINK, IFLA_IFNAME: Interface '%s' %s", del ? "DEL" : "NEW", event.interface_status.ifname, del ? "removed" : "added"); if (os_strcmp(drv->first_bss.ifname, event.interface_status.ifname) == 0) { if (del) { if (drv->if_removed) { wpa_printf(MSG_DEBUG, "nl80211: if_removed " "already set - ignore event"); return; } drv->if_removed = 1; } else { if (if_nametoindex(drv->first_bss.ifname) == 0) { wpa_printf(MSG_DEBUG, "nl80211: Interface %s " "does not exist - ignore " "RTM_NEWLINK", drv->first_bss.ifname); return; } if (!drv->if_removed) { wpa_printf(MSG_DEBUG, "nl80211: if_removed " "already cleared - ignore event"); return; } drv->if_removed = 0; } } wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_STATUS, &event); } static int wpa_driver_nl80211_own_ifname(struct wpa_driver_nl80211_data *drv, u8 *buf, size_t len) { int attrlen, rta_len; struct rtattr *attr; attrlen = len; attr = (struct rtattr *) buf; rta_len = RTA_ALIGN(sizeof(struct rtattr)); while (RTA_OK(attr, attrlen)) { if (attr->rta_type == IFLA_IFNAME) { if (os_strcmp(((char *) attr) + rta_len, drv->first_bss.ifname) == 0) return 1; else break; } attr = RTA_NEXT(attr, attrlen); } return 0; } static int wpa_driver_nl80211_own_ifindex(struct wpa_driver_nl80211_data *drv, int ifindex, u8 *buf, size_t len) { if (drv->ifindex == ifindex) return 1; if (drv->if_removed && wpa_driver_nl80211_own_ifname(drv, buf, len)) { drv->first_bss.ifindex = if_nametoindex(drv->first_bss.ifname); wpa_printf(MSG_DEBUG, "nl80211: Update ifindex for a removed " "interface"); wpa_driver_nl80211_finish_drv_init(drv); return 1; } return 0; } static struct wpa_driver_nl80211_data * nl80211_find_drv(struct nl80211_global *global, int idx, u8 *buf, size_t len) { struct wpa_driver_nl80211_data *drv; dl_list_for_each(drv, &global->interfaces, struct wpa_driver_nl80211_data, list) { if (wpa_driver_nl80211_own_ifindex(drv, idx, buf, len) || have_ifidx(drv, idx)) return drv; } return NULL; } static void wpa_driver_nl80211_event_rtm_newlink(void *ctx, struct ifinfomsg *ifi, u8 *buf, size_t len) { struct nl80211_global *global = ctx; struct wpa_driver_nl80211_data *drv; int attrlen, rta_len; struct rtattr *attr; u32 brid = 0; char namebuf[IFNAMSIZ]; drv = nl80211_find_drv(global, ifi->ifi_index, buf, len); if (!drv) { wpa_printf(MSG_DEBUG, "nl80211: Ignore event for foreign " "ifindex %d", ifi->ifi_index); return; } wpa_printf(MSG_DEBUG, "RTM_NEWLINK: operstate=%d ifi_flags=0x%x " "(%s%s%s%s)", drv->operstate, ifi->ifi_flags, (ifi->ifi_flags & IFF_UP) ? "[UP]" : "", (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "", (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "", (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : ""); if (!drv->if_disabled && !(ifi->ifi_flags & IFF_UP)) { if (if_indextoname(ifi->ifi_index, namebuf) && linux_iface_up(drv->global->ioctl_sock, drv->first_bss.ifname) > 0) { wpa_printf(MSG_DEBUG, "nl80211: Ignore interface down " "event since interface %s is up", namebuf); return; } wpa_printf(MSG_DEBUG, "nl80211: Interface down"); if (drv->ignore_if_down_event) { wpa_printf(MSG_DEBUG, "nl80211: Ignore interface down " "event generated by mode change"); drv->ignore_if_down_event = 0; } else { drv->if_disabled = 1; wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_DISABLED, NULL); } } if (drv->if_disabled && (ifi->ifi_flags & IFF_UP)) { if (if_indextoname(ifi->ifi_index, namebuf) && linux_iface_up(drv->global->ioctl_sock, drv->first_bss.ifname) == 0) { wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up " "event since interface %s is down", namebuf); } else if (if_nametoindex(drv->first_bss.ifname) == 0) { wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up " "event since interface %s does not exist", drv->first_bss.ifname); } else if (drv->if_removed) { wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up " "event since interface %s is marked " "removed", drv->first_bss.ifname); } else { wpa_printf(MSG_DEBUG, "nl80211: Interface up"); drv->if_disabled = 0; wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_ENABLED, NULL); } } /* * Some drivers send the association event before the operup event--in * this case, lifting operstate in wpa_driver_nl80211_set_operstate() * fails. This will hit us when wpa_supplicant does not need to do * IEEE 802.1X authentication */ if (drv->operstate == 1 && (ifi->ifi_flags & (IFF_LOWER_UP | IFF_DORMANT)) == IFF_LOWER_UP && !(ifi->ifi_flags & IFF_RUNNING)) netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, -1, IF_OPER_UP); attrlen = len; attr = (struct rtattr *) buf; rta_len = RTA_ALIGN(sizeof(struct rtattr)); while (RTA_OK(attr, attrlen)) { if (attr->rta_type == IFLA_IFNAME) { wpa_driver_nl80211_event_link( drv, ((char *) attr) + rta_len, attr->rta_len - rta_len, 0); } else if (attr->rta_type == IFLA_MASTER) brid = nla_get_u32((struct nlattr *) attr); attr = RTA_NEXT(attr, attrlen); } if (ifi->ifi_family == AF_BRIDGE && brid) { /* device has been added to bridge */ if_indextoname(brid, namebuf); wpa_printf(MSG_DEBUG, "nl80211: Add ifindex %u for bridge %s", brid, namebuf); add_ifidx(drv, brid); } } static void wpa_driver_nl80211_event_rtm_dellink(void *ctx, struct ifinfomsg *ifi, u8 *buf, size_t len) { struct nl80211_global *global = ctx; struct wpa_driver_nl80211_data *drv; int attrlen, rta_len; struct rtattr *attr; u32 brid = 0; drv = nl80211_find_drv(global, ifi->ifi_index, buf, len); if (!drv) { wpa_printf(MSG_DEBUG, "nl80211: Ignore dellink event for " "foreign ifindex %d", ifi->ifi_index); return; } attrlen = len; attr = (struct rtattr *) buf; rta_len = RTA_ALIGN(sizeof(struct rtattr)); while (RTA_OK(attr, attrlen)) { if (attr->rta_type == IFLA_IFNAME) { wpa_driver_nl80211_event_link( drv, ((char *) attr) + rta_len, attr->rta_len - rta_len, 1); } else if (attr->rta_type == IFLA_MASTER) brid = nla_get_u32((struct nlattr *) attr); attr = RTA_NEXT(attr, attrlen); } if (ifi->ifi_family == AF_BRIDGE && brid) { /* device has been removed from bridge */ char namebuf[IFNAMSIZ]; if_indextoname(brid, namebuf); wpa_printf(MSG_DEBUG, "nl80211: Remove ifindex %u for bridge " "%s", brid, namebuf); del_ifidx(drv, brid); } } static void mlme_event_auth(struct wpa_driver_nl80211_data *drv, const u8 *frame, size_t len) { const struct ieee80211_mgmt *mgmt; union wpa_event_data event; mgmt = (const struct ieee80211_mgmt *) frame; if (len < 24 + sizeof(mgmt->u.auth)) { wpa_printf(MSG_DEBUG, "nl80211: Too short association event " "frame"); return; } os_memcpy(drv->auth_bssid, mgmt->sa, ETH_ALEN); os_memset(&event, 0, sizeof(event)); os_memcpy(event.auth.peer, mgmt->sa, ETH_ALEN); event.auth.auth_type = le_to_host16(mgmt->u.auth.auth_alg); event.auth.status_code = le_to_host16(mgmt->u.auth.status_code); if (len > 24 + sizeof(mgmt->u.auth)) { event.auth.ies = mgmt->u.auth.variable; event.auth.ies_len = len - 24 - sizeof(mgmt->u.auth); } wpa_supplicant_event(drv->ctx, EVENT_AUTH, &event); } static unsigned int nl80211_get_assoc_freq(struct wpa_driver_nl80211_data *drv) { struct nl_msg *msg; int ret; struct nl80211_bss_info_arg arg; os_memset(&arg, 0, sizeof(arg)); msg = nlmsg_alloc(); if (!msg) goto nla_put_failure; nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SCAN); NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); arg.drv = drv; ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg); msg = NULL; if (ret == 0) { wpa_printf(MSG_DEBUG, "nl80211: Operating frequency for the " "associated BSS from scan results: %u MHz", arg.assoc_freq); return arg.assoc_freq ? arg.assoc_freq : drv->assoc_freq; } wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d " "(%s)", ret, strerror(-ret)); nla_put_failure: nlmsg_free(msg); return drv->assoc_freq; } static void mlme_event_assoc(struct wpa_driver_nl80211_data *drv, const u8 *frame, size_t len) { const struct ieee80211_mgmt *mgmt; union wpa_event_data event; u16 status; mgmt = (const struct ieee80211_mgmt *) frame; #if (defined (CONFIG_AP) || defined (HOSTAPD) ) && defined (LEGACY_STA_EVENTS) if (drv->nlmode == NL80211_IFTYPE_AP || drv->nlmode == NL80211_IFTYPE_P2P_GO) { if (len < 24 + sizeof(mgmt->u.assoc_req)) { wpa_printf(MSG_DEBUG, "nl80211: Too short association event " "frame"); return; } os_memset(&event, 0, sizeof(event)); event.assoc_info.freq = drv->assoc_freq; event.assoc_info.req_ies = (u8 *) mgmt->u.assoc_req.variable; event.assoc_info.req_ies_len = len - 24 - sizeof(mgmt->u.assoc_req); event.assoc_info.addr = mgmt->sa; } else { #endif if (len < 24 + sizeof(mgmt->u.assoc_resp)) { wpa_printf(MSG_DEBUG, "nl80211: Too short association event " "frame"); return; } status = le_to_host16(mgmt->u.assoc_resp.status_code); if (status != WLAN_STATUS_SUCCESS) { os_memset(&event, 0, sizeof(event)); event.assoc_reject.bssid = mgmt->bssid; if (len > 24 + sizeof(mgmt->u.assoc_resp)) { event.assoc_reject.resp_ies = (u8 *) mgmt->u.assoc_resp.variable; event.assoc_reject.resp_ies_len = len - 24 - sizeof(mgmt->u.assoc_resp); } event.assoc_reject.status_code = status; wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event); return; } drv->associated = 1; os_memcpy(drv->bssid, mgmt->sa, ETH_ALEN); os_memset(&event, 0, sizeof(event)); if (len > 24 + sizeof(mgmt->u.assoc_resp)) { event.assoc_info.resp_ies = (u8 *) mgmt->u.assoc_resp.variable; event.assoc_info.resp_ies_len = len - 24 - sizeof(mgmt->u.assoc_resp); } event.assoc_info.freq = drv->assoc_freq; #if (defined (CONFIG_AP) || defined(HOSTAPD)) && defined (LEGACY_STA_EVENTS) } #endif wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event); } static void mlme_event_connect(struct wpa_driver_nl80211_data *drv, enum nl80211_commands cmd, struct nlattr *status, struct nlattr *addr, struct nlattr *req_ie, struct nlattr *resp_ie) { union wpa_event_data event; if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) { /* * Avoid reporting two association events that would confuse * the core code. */ wpa_printf(MSG_DEBUG, "nl80211: Ignore connect event (cmd=%d) " "when using userspace SME", cmd); return; } os_memset(&event, 0, sizeof(event)); if (cmd == NL80211_CMD_CONNECT && nla_get_u16(status) != WLAN_STATUS_SUCCESS) { if (addr) event.assoc_reject.bssid = nla_data(addr); if (resp_ie) { event.assoc_reject.resp_ies = nla_data(resp_ie); event.assoc_reject.resp_ies_len = nla_len(resp_ie); } event.assoc_reject.status_code = nla_get_u16(status); wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event); return; } drv->associated = 1; if (addr) os_memcpy(drv->bssid, nla_data(addr), ETH_ALEN); if (req_ie) { event.assoc_info.req_ies = nla_data(req_ie); event.assoc_info.req_ies_len = nla_len(req_ie); } if (resp_ie) { event.assoc_info.resp_ies = nla_data(resp_ie); event.assoc_info.resp_ies_len = nla_len(resp_ie); } event.assoc_info.freq = nl80211_get_assoc_freq(drv); wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event); } static void mlme_event_disconnect(struct wpa_driver_nl80211_data *drv, struct nlattr *reason, struct nlattr *addr, struct nlattr *by_ap) { union wpa_event_data data; if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) { /* * Avoid reporting two disassociation events that could * confuse the core code. */ wpa_printf(MSG_DEBUG, "nl80211: Ignore disconnect " "event when using userspace SME"); return; } drv->associated = 0; os_memset(&data, 0, sizeof(data)); if (reason) data.deauth_info.reason_code = nla_get_u16(reason); data.deauth_info.locally_generated = by_ap == NULL; wpa_supplicant_event(drv->ctx, EVENT_DEAUTH, &data); } static void mlme_event_ch_switch(struct wpa_driver_nl80211_data *drv, struct nlattr *freq, struct nlattr *type) { union wpa_event_data data; int ht_enabled = 1; int chan_offset = 0; wpa_printf(MSG_DEBUG, "nl80211: Channel switch event"); if (!freq || !type) return; switch (nla_get_u32(type)) { case NL80211_CHAN_NO_HT: ht_enabled = 0; break; case NL80211_CHAN_HT20: break; case NL80211_CHAN_HT40PLUS: chan_offset = 1; break; case NL80211_CHAN_HT40MINUS: chan_offset = -1; break; } data.ch_switch.freq = nla_get_u32(freq); data.ch_switch.ht_enabled = ht_enabled; data.ch_switch.ch_offset = chan_offset; wpa_supplicant_event(drv->ctx, EVENT_CH_SWITCH, &data); } static void mlme_timeout_event(struct wpa_driver_nl80211_data *drv, enum nl80211_commands cmd, struct nlattr *addr) { union wpa_event_data event; enum wpa_event_type ev; if (nla_len(addr) != ETH_ALEN) return; wpa_printf(MSG_DEBUG, "nl80211: MLME event %d; timeout with " MACSTR, cmd, MAC2STR((u8 *) nla_data(addr))); if (cmd == NL80211_CMD_AUTHENTICATE) ev = EVENT_AUTH_TIMED_OUT; else if (cmd == NL80211_CMD_ASSOCIATE) ev = EVENT_ASSOC_TIMED_OUT; else return; os_memset(&event, 0, sizeof(event)); os_memcpy(event.timeout_event.addr, nla_data(addr), ETH_ALEN); wpa_supplicant_event(drv->ctx, ev, &event); } static void mlme_event_mgmt(struct wpa_driver_nl80211_data *drv, struct nlattr *freq, struct nlattr *sig, const u8 *frame, size_t len) { const struct ieee80211_mgmt *mgmt; union wpa_event_data event; u16 fc, stype; int ssi_signal = 0; mgmt = (const struct ieee80211_mgmt *) frame; if (len < 24) { wpa_printf(MSG_DEBUG, "nl80211: Too short action frame"); return; } fc = le_to_host16(mgmt->frame_control); stype = WLAN_FC_GET_STYPE(fc); if (sig) ssi_signal = (s32) nla_get_u32(sig); os_memset(&event, 0, sizeof(event)); if (freq) { event.rx_action.freq = nla_get_u32(freq); drv->last_mgmt_freq = event.rx_action.freq; } if (stype == WLAN_FC_STYPE_ACTION) { event.rx_action.da = mgmt->da; event.rx_action.sa = mgmt->sa; event.rx_action.bssid = mgmt->bssid; event.rx_action.category = mgmt->u.action.category; event.rx_action.data = &mgmt->u.action.category + 1; event.rx_action.len = frame + len - event.rx_action.data; wpa_supplicant_event(drv->ctx, EVENT_RX_ACTION, &event); #if defined (LEGACY_STA_EVENTS) } else if (stype == WLAN_FC_STYPE_ASSOC_REQ) { mlme_event_assoc(drv, frame, len); } else if (stype == WLAN_FC_STYPE_DISASSOC) { mlme_event_deauth_disassoc(drv, EVENT_DISASSOC, frame, len); } else if (stype == WLAN_FC_STYPE_DEAUTH) { mlme_event_deauth_disassoc(drv, EVENT_DEAUTH, frame, len); #endif } else { event.rx_mgmt.frame = frame; event.rx_mgmt.frame_len = len; event.rx_mgmt.ssi_signal = ssi_signal; wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event); } } static void mlme_event_mgmt_tx_status(struct wpa_driver_nl80211_data *drv, struct nlattr *cookie, const u8 *frame, size_t len, struct nlattr *ack) { union wpa_event_data event; const struct ieee80211_hdr *hdr; u16 fc; if (!is_ap_interface(drv->nlmode)) { u64 cookie_val; if (!cookie) return; cookie_val = nla_get_u64(cookie); wpa_printf(MSG_DEBUG, "nl80211: Action TX status:" " cookie=0%llx%s (ack=%d)", (long long unsigned int) cookie_val, cookie_val == drv->send_action_cookie ? " (match)" : " (unknown)", ack != NULL); if (cookie_val != drv->send_action_cookie) return; } hdr = (const struct ieee80211_hdr *) frame; fc = le_to_host16(hdr->frame_control); os_memset(&event, 0, sizeof(event)); event.tx_status.type = WLAN_FC_GET_TYPE(fc); event.tx_status.stype = WLAN_FC_GET_STYPE(fc); event.tx_status.dst = hdr->addr1; event.tx_status.data = frame; event.tx_status.data_len = len; event.tx_status.ack = ack != NULL; wpa_supplicant_event(drv->ctx, EVENT_TX_STATUS, &event); } static void mlme_event_deauth_disassoc(struct wpa_driver_nl80211_data *drv, enum wpa_event_type type, const u8 *frame, size_t len) { const struct ieee80211_mgmt *mgmt; union wpa_event_data event; const u8 *bssid = NULL; u16 reason_code = 0; mgmt = (const struct ieee80211_mgmt *) frame; if (len >= 24) { bssid = mgmt->bssid; if (drv->associated != 0 && os_memcmp(bssid, drv->bssid, ETH_ALEN) != 0 && os_memcmp(bssid, drv->auth_bssid, ETH_ALEN) != 0) { /* * We have presumably received this deauth as a * response to a clear_state_mismatch() outgoing * deauth. Don't let it take us offline! */ wpa_printf(MSG_DEBUG, "nl80211: Deauth received " "from Unknown BSSID " MACSTR " -- ignoring", MAC2STR(bssid)); return; } } drv->associated = 0; os_memset(&event, 0, sizeof(event)); /* Note: Same offset for Reason Code in both frame subtypes */ if (len >= 24 + sizeof(mgmt->u.deauth)) reason_code = le_to_host16(mgmt->u.deauth.reason_code); if (type == EVENT_DISASSOC) { event.disassoc_info.locally_generated = !os_memcmp(mgmt->sa, drv->first_bss.addr, ETH_ALEN); #if defined (LEGACY_STA_EVENTS) if (drv->nlmode == NL80211_IFTYPE_AP || drv->nlmode == NL80211_IFTYPE_P2P_GO) { event.disassoc_info.addr = mgmt->sa; } else #endif event.disassoc_info.addr = bssid; event.disassoc_info.reason_code = reason_code; if (frame + len > mgmt->u.disassoc.variable) { event.disassoc_info.ie = mgmt->u.disassoc.variable; event.disassoc_info.ie_len = frame + len - mgmt->u.disassoc.variable; } } else { event.deauth_info.locally_generated = !os_memcmp(mgmt->sa, drv->first_bss.addr, ETH_ALEN); #if defined (LEGACY_STA_EVENTS) if (drv->nlmode == NL80211_IFTYPE_AP || drv->nlmode == NL80211_IFTYPE_P2P_GO) { event.deauth_info.addr = mgmt->sa; } else #endif event.deauth_info.addr = bssid; event.deauth_info.reason_code = reason_code; if (frame + len > mgmt->u.deauth.variable) { event.deauth_info.ie = mgmt->u.deauth.variable; event.deauth_info.ie_len = frame + len - mgmt->u.deauth.variable; } } wpa_supplicant_event(drv->ctx, type, &event); } static void mlme_event_unprot_disconnect(struct wpa_driver_nl80211_data *drv, enum wpa_event_type type, const u8 *frame, size_t len) { const struct ieee80211_mgmt *mgmt; union wpa_event_data event; u16 reason_code = 0; if (len < 24) return; mgmt = (const struct ieee80211_mgmt *) frame; os_memset(&event, 0, sizeof(event)); /* Note: Same offset for Reason Code in both frame subtypes */ if (len >= 24 + sizeof(mgmt->u.deauth)) reason_code = le_to_host16(mgmt->u.deauth.reason_code); if (type == EVENT_UNPROT_DISASSOC) { event.unprot_disassoc.sa = mgmt->sa; event.unprot_disassoc.da = mgmt->da; event.unprot_disassoc.reason_code = reason_code; } else { event.unprot_deauth.sa = mgmt->sa; event.unprot_deauth.da = mgmt->da; event.unprot_deauth.reason_code = reason_code; } wpa_supplicant_event(drv->ctx, type, &event); } static void mlme_event(struct wpa_driver_nl80211_data *drv, enum nl80211_commands cmd, struct nlattr *frame, struct nlattr *addr, struct nlattr *timed_out, struct nlattr *freq, struct nlattr *ack, struct nlattr *cookie, struct nlattr *sig) { if (timed_out && addr) { mlme_timeout_event(drv, cmd, addr); return; } if (frame == NULL) { wpa_printf(MSG_DEBUG, "nl80211: MLME event %d without frame " "data", cmd); return; } wpa_printf(MSG_DEBUG, "nl80211: MLME event %d", cmd); wpa_hexdump(MSG_MSGDUMP, "nl80211: MLME event frame", nla_data(frame), nla_len(frame)); switch (cmd) { case NL80211_CMD_AUTHENTICATE: mlme_event_auth(drv, nla_data(frame), nla_len(frame)); break; case NL80211_CMD_ASSOCIATE: mlme_event_assoc(drv, nla_data(frame), nla_len(frame)); break; case NL80211_CMD_DEAUTHENTICATE: mlme_event_deauth_disassoc(drv, EVENT_DEAUTH, nla_data(frame), nla_len(frame)); break; case NL80211_CMD_DISASSOCIATE: mlme_event_deauth_disassoc(drv, EVENT_DISASSOC, nla_data(frame), nla_len(frame)); break; case NL80211_CMD_FRAME: mlme_event_mgmt(drv, freq, sig, nla_data(frame), nla_len(frame)); break; case NL80211_CMD_FRAME_TX_STATUS: mlme_event_mgmt_tx_status(drv, cookie, nla_data(frame), nla_len(frame), ack); break; case NL80211_CMD_UNPROT_DEAUTHENTICATE: mlme_event_unprot_disconnect(drv, EVENT_UNPROT_DEAUTH, nla_data(frame), nla_len(frame)); break; case NL80211_CMD_UNPROT_DISASSOCIATE: mlme_event_unprot_disconnect(drv, EVENT_UNPROT_DISASSOC, nla_data(frame), nla_len(frame)); break; default: break; } } static void mlme_event_michael_mic_failure(struct wpa_driver_nl80211_data *drv, struct nlattr *tb[]) { union wpa_event_data data; wpa_printf(MSG_DEBUG, "nl80211: MLME event Michael MIC failure"); os_memset(&data, 0, sizeof(data)); if (tb[NL80211_ATTR_MAC]) { wpa_hexdump(MSG_DEBUG, "nl80211: Source MAC address", nla_data(tb[NL80211_ATTR_MAC]), nla_len(tb[NL80211_ATTR_MAC])); data.michael_mic_failure.src = nla_data(tb[NL80211_ATTR_MAC]); } if (tb[NL80211_ATTR_KEY_SEQ]) { wpa_hexdump(MSG_DEBUG, "nl80211: TSC", nla_data(tb[NL80211_ATTR_KEY_SEQ]), nla_len(tb[NL80211_ATTR_KEY_SEQ])); } if (tb[NL80211_ATTR_KEY_TYPE]) { enum nl80211_key_type key_type = nla_get_u32(tb[NL80211_ATTR_KEY_TYPE]); wpa_printf(MSG_DEBUG, "nl80211: Key Type %d", key_type); if (key_type == NL80211_KEYTYPE_PAIRWISE) data.michael_mic_failure.unicast = 1; } else data.michael_mic_failure.unicast = 1; if (tb[NL80211_ATTR_KEY_IDX]) { u8 key_id = nla_get_u8(tb[NL80211_ATTR_KEY_IDX]); wpa_printf(MSG_DEBUG, "nl80211: Key Id %d", key_id); } wpa_supplicant_event(drv->ctx, EVENT_MICHAEL_MIC_FAILURE, &data); } static void mlme_event_join_ibss(struct wpa_driver_nl80211_data *drv, struct nlattr *tb[]) { if (tb[NL80211_ATTR_MAC] == NULL) { wpa_printf(MSG_DEBUG, "nl80211: No address in IBSS joined " "event"); return; } os_memcpy(drv->bssid, nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN); drv->associated = 1; wpa_printf(MSG_DEBUG, "nl80211: IBSS " MACSTR " joined", MAC2STR(drv->bssid)); wpa_supplicant_event(drv->ctx, EVENT_ASSOC, NULL); } static void mlme_event_remain_on_channel(struct wpa_driver_nl80211_data *drv, int cancel_event, struct nlattr *tb[]) { unsigned int freq, chan_type, duration; union wpa_event_data data; u64 cookie; if (tb[NL80211_ATTR_WIPHY_FREQ]) freq = nla_get_u32(tb[NL80211_ATTR_WIPHY_FREQ]); else freq = 0; if (tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) chan_type = nla_get_u32(tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE]); else chan_type = 0; if (tb[NL80211_ATTR_DURATION]) duration = nla_get_u32(tb[NL80211_ATTR_DURATION]); else duration = 0; if (tb[NL80211_ATTR_COOKIE]) cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]); else cookie = 0; wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel event (cancel=%d " "freq=%u channel_type=%u duration=%u cookie=0x%llx (%s))", cancel_event, freq, chan_type, duration, (long long unsigned int) cookie, cookie == drv->remain_on_chan_cookie ? "match" : "unknown"); if (cookie != drv->remain_on_chan_cookie) return; /* not for us */ if (cancel_event) drv->pending_remain_on_chan = 0; os_memset(&data, 0, sizeof(data)); data.remain_on_channel.freq = freq; data.remain_on_channel.duration = duration; wpa_supplicant_event(drv->ctx, cancel_event ? EVENT_CANCEL_REMAIN_ON_CHANNEL : EVENT_REMAIN_ON_CHANNEL, &data); } static void send_scan_event(struct wpa_driver_nl80211_data *drv, int aborted, struct nlattr *tb[]) { union wpa_event_data event; struct nlattr *nl; int rem; struct scan_info *info; #define MAX_REPORT_FREQS 50 int freqs[MAX_REPORT_FREQS]; int num_freqs = 0; if (drv->scan_for_auth) { drv->scan_for_auth = 0; wpa_printf(MSG_DEBUG, "nl80211: Scan results for missing " "cfg80211 BSS entry"); wpa_driver_nl80211_authenticate_retry(drv); return; } os_memset(&event, 0, sizeof(event)); info = &event.scan_info; info->aborted = aborted; if (tb[NL80211_ATTR_SCAN_SSIDS]) { nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_SSIDS], rem) { struct wpa_driver_scan_ssid *s = &info->ssids[info->num_ssids]; s->ssid = nla_data(nl); s->ssid_len = nla_len(nl); info->num_ssids++; if (info->num_ssids == WPAS_MAX_SCAN_SSIDS) break; } } if (tb[NL80211_ATTR_SCAN_FREQUENCIES]) { nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_FREQUENCIES], rem) { freqs[num_freqs] = nla_get_u32(nl); num_freqs++; if (num_freqs == MAX_REPORT_FREQS - 1) break; } info->freqs = freqs; info->num_freqs = num_freqs; } wpa_supplicant_event(drv->ctx, EVENT_SCAN_RESULTS, &event); } static int get_link_signal(struct nl_msg *msg, void *arg) { struct nlattr *tb[NL80211_ATTR_MAX + 1]; struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); struct nlattr *sinfo[NL80211_STA_INFO_MAX + 1]; static struct nla_policy policy[NL80211_STA_INFO_MAX + 1] = { [NL80211_STA_INFO_SIGNAL] = { .type = NLA_U8 }, }; struct nlattr *rinfo[NL80211_RATE_INFO_MAX + 1]; static struct nla_policy rate_policy[NL80211_RATE_INFO_MAX + 1] = { [NL80211_RATE_INFO_BITRATE] = { .type = NLA_U16 }, [NL80211_RATE_INFO_MCS] = { .type = NLA_U8 }, [NL80211_RATE_INFO_40_MHZ_WIDTH] = { .type = NLA_FLAG }, [NL80211_RATE_INFO_SHORT_GI] = { .type = NLA_FLAG }, }; struct wpa_signal_info *sig_change = arg; nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), genlmsg_attrlen(gnlh, 0), NULL); if (!tb[NL80211_ATTR_STA_INFO] || nla_parse_nested(sinfo, NL80211_STA_INFO_MAX, tb[NL80211_ATTR_STA_INFO], policy)) return NL_SKIP; if (!sinfo[NL80211_STA_INFO_SIGNAL]) return NL_SKIP; sig_change->current_signal = (s8) nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL]); if (sinfo[NL80211_STA_INFO_TX_BITRATE]) { if (nla_parse_nested(rinfo, NL80211_RATE_INFO_MAX, sinfo[NL80211_STA_INFO_TX_BITRATE], rate_policy)) { sig_change->current_txrate = 0; } else { if (rinfo[NL80211_RATE_INFO_BITRATE]) { sig_change->current_txrate = nla_get_u16(rinfo[ NL80211_RATE_INFO_BITRATE]) * 100; } } } return NL_SKIP; } static int nl80211_get_link_signal(struct wpa_driver_nl80211_data *drv, struct wpa_signal_info *sig) { struct nl_msg *msg; sig->current_signal = -9999; sig->current_txrate = 0; msg = nlmsg_alloc(); if (!msg) return -ENOMEM; nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_STATION); NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid); return send_and_recv_msgs(drv, msg, get_link_signal, sig); nla_put_failure: nlmsg_free(msg); return -ENOBUFS; } static int get_link_noise(struct nl_msg *msg, void *arg) { struct nlattr *tb[NL80211_ATTR_MAX + 1]; struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1]; static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = { [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 }, [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 }, }; struct wpa_signal_info *sig_change = arg; nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), genlmsg_attrlen(gnlh, 0), NULL); if (!tb[NL80211_ATTR_SURVEY_INFO]) { wpa_printf(MSG_DEBUG, "nl80211: survey data missing!"); return NL_SKIP; } if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX, tb[NL80211_ATTR_SURVEY_INFO], survey_policy)) { wpa_printf(MSG_DEBUG, "nl80211: failed to parse nested " "attributes!"); return NL_SKIP; } if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY]) return NL_SKIP; if (nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]) != sig_change->frequency) return NL_SKIP; if (!sinfo[NL80211_SURVEY_INFO_NOISE]) return NL_SKIP; sig_change->current_noise = (s8) nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]); return NL_SKIP; } static int nl80211_get_link_noise(struct wpa_driver_nl80211_data *drv, struct wpa_signal_info *sig_change) { struct nl_msg *msg; sig_change->current_noise = 9999; sig_change->frequency = drv->assoc_freq; msg = nlmsg_alloc(); if (!msg) return -ENOMEM; nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SURVEY); NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); return send_and_recv_msgs(drv, msg, get_link_noise, sig_change); nla_put_failure: nlmsg_free(msg); return -ENOBUFS; } static int get_noise_for_scan_results(struct nl_msg *msg, void *arg) { struct nlattr *tb[NL80211_ATTR_MAX + 1]; struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1]; static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = { [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 }, [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 }, }; struct wpa_scan_results *scan_results = arg; struct wpa_scan_res *scan_res; size_t i; nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), genlmsg_attrlen(gnlh, 0), NULL); if (!tb[NL80211_ATTR_SURVEY_INFO]) { wpa_printf(MSG_DEBUG, "nl80211: Survey data missing"); return NL_SKIP; } if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX, tb[NL80211_ATTR_SURVEY_INFO], survey_policy)) { wpa_printf(MSG_DEBUG, "nl80211: Failed to parse nested " "attributes"); return NL_SKIP; } if (!sinfo[NL80211_SURVEY_INFO_NOISE]) return NL_SKIP; if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY]) return NL_SKIP; for (i = 0; i < scan_results->num; ++i) { scan_res = scan_results->res[i]; if (!scan_res) continue; if ((int) nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]) != scan_res->freq) continue; if (!(scan_res->flags & WPA_SCAN_NOISE_INVALID)) continue; scan_res->noise = (s8) nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]); scan_res->flags &= ~WPA_SCAN_NOISE_INVALID; } return NL_SKIP; } static int nl80211_get_noise_for_scan_results( struct wpa_driver_nl80211_data *drv, struct wpa_scan_results *scan_res) { struct nl_msg *msg; msg = nlmsg_alloc(); if (!msg) return -ENOMEM; nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SURVEY); NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); return send_and_recv_msgs(drv, msg, get_noise_for_scan_results, scan_res); nla_put_failure: nlmsg_free(msg); return -ENOBUFS; } static void nl80211_cqm_event(struct wpa_driver_nl80211_data *drv, struct nlattr *tb[]) { static struct nla_policy cqm_policy[NL80211_ATTR_CQM_MAX + 1] = { [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 }, [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U8 }, [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 }, [NL80211_ATTR_CQM_PKT_LOSS_EVENT] = { .type = NLA_U32 }, }; struct nlattr *cqm[NL80211_ATTR_CQM_MAX + 1]; enum nl80211_cqm_rssi_threshold_event event; union wpa_event_data ed; struct wpa_signal_info sig; int res; if (tb[NL80211_ATTR_CQM] == NULL || nla_parse_nested(cqm, NL80211_ATTR_CQM_MAX, tb[NL80211_ATTR_CQM], cqm_policy)) { wpa_printf(MSG_DEBUG, "nl80211: Ignore invalid CQM event"); return; } os_memset(&ed, 0, sizeof(ed)); if (cqm[NL80211_ATTR_CQM_PKT_LOSS_EVENT]) { if (!tb[NL80211_ATTR_MAC]) return; os_memcpy(ed.low_ack.addr, nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN); wpa_supplicant_event(drv->ctx, EVENT_STATION_LOW_ACK, &ed); return; } if (cqm[NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] == NULL) return; event = nla_get_u32(cqm[NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT]); if (event == NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH) { wpa_printf(MSG_DEBUG, "nl80211: Connection quality monitor " "event: RSSI high"); ed.signal_change.above_threshold = 1; } else if (event == NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW) { wpa_printf(MSG_DEBUG, "nl80211: Connection quality monitor " "event: RSSI low"); ed.signal_change.above_threshold = 0; } else return; res = nl80211_get_link_signal(drv, &sig); if (res == 0) { ed.signal_change.current_signal = sig.current_signal; ed.signal_change.current_txrate = sig.current_txrate; wpa_printf(MSG_DEBUG, "nl80211: Signal: %d dBm txrate: %d", sig.current_signal, sig.current_txrate); } res = nl80211_get_link_noise(drv, &sig); if (res == 0) { ed.signal_change.current_noise = sig.current_noise; wpa_printf(MSG_DEBUG, "nl80211: Noise: %d dBm", sig.current_noise); } wpa_supplicant_event(drv->ctx, EVENT_SIGNAL_CHANGE, &ed); } static void nl80211_new_station_event(struct wpa_driver_nl80211_data *drv, struct nlattr **tb) { u8 *addr; union wpa_event_data data; if (tb[NL80211_ATTR_MAC] == NULL) return; addr = nla_data(tb[NL80211_ATTR_MAC]); wpa_printf(MSG_DEBUG, "nl80211: New station " MACSTR, MAC2STR(addr)); if (is_ap_interface(drv->nlmode) && drv->device_ap_sme) { u8 *ies = NULL; size_t ies_len = 0; if (tb[NL80211_ATTR_IE]) { ies = nla_data(tb[NL80211_ATTR_IE]); ies_len = nla_len(tb[NL80211_ATTR_IE]); } wpa_hexdump(MSG_DEBUG, "nl80211: Assoc Req IEs", ies, ies_len); drv_event_assoc(drv->ctx, addr, ies, ies_len, 0); return; } if (drv->nlmode != NL80211_IFTYPE_ADHOC) return; os_memset(&data, 0, sizeof(data)); os_memcpy(data.ibss_rsn_start.peer, addr, ETH_ALEN); wpa_supplicant_event(drv->ctx, EVENT_IBSS_RSN_START, &data); } static void nl80211_del_station_event(struct wpa_driver_nl80211_data *drv, struct nlattr **tb) { u8 *addr; union wpa_event_data data; if (tb[NL80211_ATTR_MAC] == NULL) return; addr = nla_data(tb[NL80211_ATTR_MAC]); wpa_printf(MSG_DEBUG, "nl80211: Delete station " MACSTR, MAC2STR(addr)); if (is_ap_interface(drv->nlmode) && drv->device_ap_sme) { drv_event_disassoc(drv->ctx, addr); return; } if (drv->nlmode != NL80211_IFTYPE_ADHOC) return; os_memset(&data, 0, sizeof(data)); os_memcpy(data.ibss_peer_lost.peer, addr, ETH_ALEN); wpa_supplicant_event(drv->ctx, EVENT_IBSS_PEER_LOST, &data); } static void nl80211_rekey_offload_event(struct wpa_driver_nl80211_data *drv, struct nlattr **tb) { struct nlattr *rekey_info[NUM_NL80211_REKEY_DATA]; static struct nla_policy rekey_policy[NUM_NL80211_REKEY_DATA] = { [NL80211_REKEY_DATA_KEK] = { .minlen = NL80211_KEK_LEN, .maxlen = NL80211_KEK_LEN, }, [NL80211_REKEY_DATA_KCK] = { .minlen = NL80211_KCK_LEN, .maxlen = NL80211_KCK_LEN, }, [NL80211_REKEY_DATA_REPLAY_CTR] = { .minlen = NL80211_REPLAY_CTR_LEN, .maxlen = NL80211_REPLAY_CTR_LEN, }, }; union wpa_event_data data; if (!tb[NL80211_ATTR_MAC]) return; if (!tb[NL80211_ATTR_REKEY_DATA]) return; if (nla_parse_nested(rekey_info, MAX_NL80211_REKEY_DATA, tb[NL80211_ATTR_REKEY_DATA], rekey_policy)) return; if (!rekey_info[NL80211_REKEY_DATA_REPLAY_CTR]) return; os_memset(&data, 0, sizeof(data)); data.driver_gtk_rekey.bssid = nla_data(tb[NL80211_ATTR_MAC]); wpa_printf(MSG_DEBUG, "nl80211: Rekey offload event for BSSID " MACSTR, MAC2STR(data.driver_gtk_rekey.bssid)); data.driver_gtk_rekey.replay_ctr = nla_data(rekey_info[NL80211_REKEY_DATA_REPLAY_CTR]); wpa_hexdump(MSG_DEBUG, "nl80211: Rekey offload - Replay Counter", data.driver_gtk_rekey.replay_ctr, NL80211_REPLAY_CTR_LEN); wpa_supplicant_event(drv->ctx, EVENT_DRIVER_GTK_REKEY, &data); } static void nl80211_pmksa_candidate_event(struct wpa_driver_nl80211_data *drv, struct nlattr **tb) { struct nlattr *cand[NUM_NL80211_PMKSA_CANDIDATE]; static struct nla_policy cand_policy[NUM_NL80211_PMKSA_CANDIDATE] = { [NL80211_PMKSA_CANDIDATE_INDEX] = { .type = NLA_U32 }, [NL80211_PMKSA_CANDIDATE_BSSID] = { .minlen = ETH_ALEN, .maxlen = ETH_ALEN, }, [NL80211_PMKSA_CANDIDATE_PREAUTH] = { .type = NLA_FLAG }, }; union wpa_event_data data; if (!tb[NL80211_ATTR_PMKSA_CANDIDATE]) return; if (nla_parse_nested(cand, MAX_NL80211_PMKSA_CANDIDATE, tb[NL80211_ATTR_PMKSA_CANDIDATE], cand_policy)) return; if (!cand[NL80211_PMKSA_CANDIDATE_INDEX] || !cand[NL80211_PMKSA_CANDIDATE_BSSID]) return; os_memset(&data, 0, sizeof(data)); os_memcpy(data.pmkid_candidate.bssid, nla_data(cand[NL80211_PMKSA_CANDIDATE_BSSID]), ETH_ALEN); data.pmkid_candidate.index = nla_get_u32(cand[NL80211_PMKSA_CANDIDATE_INDEX]); data.pmkid_candidate.preauth = cand[NL80211_PMKSA_CANDIDATE_PREAUTH] != NULL; wpa_supplicant_event(drv->ctx, EVENT_PMKID_CANDIDATE, &data); } static void nl80211_client_probe_event(struct wpa_driver_nl80211_data *drv, struct nlattr **tb) { union wpa_event_data data; if (!tb[NL80211_ATTR_MAC] || !tb[NL80211_ATTR_ACK]) return; os_memset(&data, 0, sizeof(data)); os_memcpy(data.client_poll.addr, nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN); wpa_supplicant_event(drv->ctx, EVENT_DRIVER_CLIENT_POLL_OK, &data); } static void nl80211_spurious_frame(struct i802_bss *bss, struct nlattr **tb, int wds) { struct wpa_driver_nl80211_data *drv = bss->drv; union wpa_event_data event; if (!tb[NL80211_ATTR_MAC]) return; os_memset(&event, 0, sizeof(event)); event.rx_from_unknown.bssid = bss->addr; event.rx_from_unknown.addr = nla_data(tb[NL80211_ATTR_MAC]); event.rx_from_unknown.wds = wds; wpa_supplicant_event(drv->ctx, EVENT_RX_FROM_UNKNOWN, &event); } static void do_process_drv_event(struct wpa_driver_nl80211_data *drv, int cmd, struct nlattr **tb) { if (drv->ap_scan_as_station != NL80211_IFTYPE_UNSPECIFIED && (cmd == NL80211_CMD_NEW_SCAN_RESULTS || cmd == NL80211_CMD_SCAN_ABORTED)) { wpa_driver_nl80211_set_mode(&drv->first_bss, drv->ap_scan_as_station); drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED; } switch (cmd) { case NL80211_CMD_TRIGGER_SCAN: wpa_printf(MSG_DEBUG, "nl80211: Scan trigger"); break; case NL80211_CMD_START_SCHED_SCAN: wpa_printf(MSG_DEBUG, "nl80211: Sched scan started"); break; case NL80211_CMD_SCHED_SCAN_STOPPED: wpa_printf(MSG_DEBUG, "nl80211: Sched scan stopped"); wpa_supplicant_event(drv->ctx, EVENT_SCHED_SCAN_STOPPED, NULL); break; case NL80211_CMD_NEW_SCAN_RESULTS: wpa_printf(MSG_DEBUG, "nl80211: New scan results available"); drv->scan_complete_events = 1; eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx); send_scan_event(drv, 0, tb); break; case NL80211_CMD_SCHED_SCAN_RESULTS: wpa_printf(MSG_DEBUG, "nl80211: New sched scan results available"); send_scan_event(drv, 0, tb); break; case NL80211_CMD_SCAN_ABORTED: wpa_printf(MSG_DEBUG, "nl80211: Scan aborted"); /* * Need to indicate that scan results are available in order * not to make wpa_supplicant stop its scanning. */ eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx); send_scan_event(drv, 1, tb); break; case NL80211_CMD_AUTHENTICATE: case NL80211_CMD_ASSOCIATE: case NL80211_CMD_DEAUTHENTICATE: case NL80211_CMD_DISASSOCIATE: case NL80211_CMD_FRAME_TX_STATUS: case NL80211_CMD_UNPROT_DEAUTHENTICATE: case NL80211_CMD_UNPROT_DISASSOCIATE: mlme_event(drv, cmd, tb[NL80211_ATTR_FRAME], tb[NL80211_ATTR_MAC], tb[NL80211_ATTR_TIMED_OUT], tb[NL80211_ATTR_WIPHY_FREQ], tb[NL80211_ATTR_ACK], tb[NL80211_ATTR_COOKIE], tb[NL80211_ATTR_RX_SIGNAL_DBM]); break; case NL80211_CMD_CONNECT: case NL80211_CMD_ROAM: mlme_event_connect(drv, cmd, tb[NL80211_ATTR_STATUS_CODE], tb[NL80211_ATTR_MAC], tb[NL80211_ATTR_REQ_IE], tb[NL80211_ATTR_RESP_IE]); break; case NL80211_CMD_CH_SWITCH_NOTIFY: mlme_event_ch_switch(drv, tb[NL80211_ATTR_WIPHY_FREQ], tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE]); break; case NL80211_CMD_DISCONNECT: mlme_event_disconnect(drv, tb[NL80211_ATTR_REASON_CODE], tb[NL80211_ATTR_MAC], tb[NL80211_ATTR_DISCONNECTED_BY_AP]); break; case NL80211_CMD_MICHAEL_MIC_FAILURE: mlme_event_michael_mic_failure(drv, tb); break; case NL80211_CMD_JOIN_IBSS: mlme_event_join_ibss(drv, tb); break; case NL80211_CMD_REMAIN_ON_CHANNEL: mlme_event_remain_on_channel(drv, 0, tb); break; case NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL: mlme_event_remain_on_channel(drv, 1, tb); break; case NL80211_CMD_NOTIFY_CQM: nl80211_cqm_event(drv, tb); break; case NL80211_CMD_REG_CHANGE: wpa_printf(MSG_DEBUG, "nl80211: Regulatory domain change"); wpa_supplicant_event(drv->ctx, EVENT_CHANNEL_LIST_CHANGED, NULL); break; case NL80211_CMD_REG_BEACON_HINT: wpa_printf(MSG_DEBUG, "nl80211: Regulatory beacon hint"); wpa_supplicant_event(drv->ctx, EVENT_CHANNEL_LIST_CHANGED, NULL); break; case NL80211_CMD_NEW_STATION: nl80211_new_station_event(drv, tb); break; case NL80211_CMD_DEL_STATION: nl80211_del_station_event(drv, tb); break; case NL80211_CMD_SET_REKEY_OFFLOAD: nl80211_rekey_offload_event(drv, tb); break; case NL80211_CMD_PMKSA_CANDIDATE: nl80211_pmksa_candidate_event(drv, tb); break; case NL80211_CMD_PROBE_CLIENT: nl80211_client_probe_event(drv, tb); break; default: wpa_printf(MSG_DEBUG, "nl80211: Ignored unknown event " "(cmd=%d)", cmd); break; } } static int process_drv_event(struct nl_msg *msg, void *arg) { struct wpa_driver_nl80211_data *drv = arg; struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); struct nlattr *tb[NL80211_ATTR_MAX + 1]; nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), genlmsg_attrlen(gnlh, 0), NULL); if (tb[NL80211_ATTR_IFINDEX]) { int ifindex = nla_get_u32(tb[NL80211_ATTR_IFINDEX]); if (ifindex != drv->ifindex && !have_ifidx(drv, ifindex)) { wpa_printf(MSG_DEBUG, "nl80211: Ignored event (cmd=%d)" " for foreign interface (ifindex %d)", gnlh->cmd, ifindex); return NL_SKIP; } } do_process_drv_event(drv, gnlh->cmd, tb); return NL_SKIP; } static int process_global_event(struct nl_msg *msg, void *arg) { struct nl80211_global *global = arg; struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); struct nlattr *tb[NL80211_ATTR_MAX + 1]; struct wpa_driver_nl80211_data *drv, *tmp; int ifidx = -1; nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), genlmsg_attrlen(gnlh, 0), NULL); if (tb[NL80211_ATTR_IFINDEX]) ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]); dl_list_for_each_safe(drv, tmp, &global->interfaces, struct wpa_driver_nl80211_data, list) { if (ifidx == -1 || ifidx == drv->ifindex || have_ifidx(drv, ifidx)) do_process_drv_event(drv, gnlh->cmd, tb); } return NL_SKIP; } static int process_bss_event(struct nl_msg *msg, void *arg) { struct i802_bss *bss = arg; struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); struct nlattr *tb[NL80211_ATTR_MAX + 1]; nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), genlmsg_attrlen(gnlh, 0), NULL); switch (gnlh->cmd) { case NL80211_CMD_FRAME: case NL80211_CMD_FRAME_TX_STATUS: mlme_event(bss->drv, gnlh->cmd, tb[NL80211_ATTR_FRAME], tb[NL80211_ATTR_MAC], tb[NL80211_ATTR_TIMED_OUT], tb[NL80211_ATTR_WIPHY_FREQ], tb[NL80211_ATTR_ACK], tb[NL80211_ATTR_COOKIE], tb[NL80211_ATTR_RX_SIGNAL_DBM]); break; case NL80211_CMD_UNEXPECTED_FRAME: nl80211_spurious_frame(bss, tb, 0); break; case NL80211_CMD_UNEXPECTED_4ADDR_FRAME: nl80211_spurious_frame(bss, tb, 1); break; default: wpa_printf(MSG_DEBUG, "nl80211: Ignored unknown event " "(cmd=%d)", gnlh->cmd); break; } return NL_SKIP; } static void wpa_driver_nl80211_event_receive(int sock, void *eloop_ctx, void *handle) { struct nl_cb *cb = eloop_ctx; wpa_printf(MSG_DEBUG, "nl80211: Event message available"); nl_recvmsgs(handle, cb); } /** * wpa_driver_nl80211_set_country - ask nl80211 to set the regulatory domain * @priv: driver_nl80211 private data * @alpha2_arg: country to which to switch to * Returns: 0 on success, -1 on failure * * This asks nl80211 to set the regulatory domain for given * country ISO / IEC alpha2. */ static int wpa_driver_nl80211_set_country(void *priv, const char *alpha2_arg) { struct i802_bss *bss = priv; struct wpa_driver_nl80211_data *drv = bss->drv; char alpha2[3]; struct nl_msg *msg; msg = nlmsg_alloc(); if (!msg) return -ENOMEM; alpha2[0] = alpha2_arg[0]; alpha2[1] = alpha2_arg[1]; alpha2[2] = '\0'; nl80211_cmd(drv, msg, 0, NL80211_CMD_REQ_SET_REG); NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, alpha2); if (send_and_recv_msgs(drv, msg, NULL, NULL)) return -EINVAL; return 0; nla_put_failure: nlmsg_free(msg); return -EINVAL; } struct wiphy_info_data { struct wpa_driver_capa *capa; unsigned int error:1; unsigned int device_ap_sme:1; unsigned int poll_command_supported:1; unsigned int data_tx_status:1; unsigned int monitor_supported:1; }; static unsigned int probe_resp_offload_support(int supp_protocols) { unsigned int prot = 0; if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS) prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS; if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS2) prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS2; if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_P2P) prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_P2P; if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_80211U) prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_INTERWORKING; return prot; } static int wiphy_info_handler(struct nl_msg *msg, void *arg) { struct nlattr *tb[NL80211_ATTR_MAX + 1]; struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); struct wiphy_info_data *info = arg; int p2p_go_supported = 0, p2p_client_supported = 0; int p2p_concurrent = 0, p2p_multichan_concurrent = 0; int auth_supported = 0, connect_supported = 0; struct wpa_driver_capa *capa = info->capa; static struct nla_policy iface_combination_policy[NUM_NL80211_IFACE_COMB] = { [NL80211_IFACE_COMB_LIMITS] = { .type = NLA_NESTED }, [NL80211_IFACE_COMB_MAXNUM] = { .type = NLA_U32 }, [NL80211_IFACE_COMB_STA_AP_BI_MATCH] = { .type = NLA_FLAG }, [NL80211_IFACE_COMB_NUM_CHANNELS] = { .type = NLA_U32 }, }, iface_limit_policy[NUM_NL80211_IFACE_LIMIT] = { [NL80211_IFACE_LIMIT_TYPES] = { .type = NLA_NESTED }, [NL80211_IFACE_LIMIT_MAX] = { .type = NLA_U32 }, }; nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), genlmsg_attrlen(gnlh, 0), NULL); if (tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]) capa->max_scan_ssids = nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]); if (tb[NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS]) capa->max_sched_scan_ssids = nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS]); if (tb[NL80211_ATTR_MAX_MATCH_SETS]) capa->max_match_sets = nla_get_u8(tb[NL80211_ATTR_MAX_MATCH_SETS]); if (tb[NL80211_ATTR_SUPPORTED_IFTYPES]) { struct nlattr *nl_mode; int i; nla_for_each_nested(nl_mode, tb[NL80211_ATTR_SUPPORTED_IFTYPES], i) { switch (nla_type(nl_mode)) { case NL80211_IFTYPE_AP: capa->flags |= WPA_DRIVER_FLAGS_AP; break; case NL80211_IFTYPE_P2P_GO: p2p_go_supported = 1; break; case NL80211_IFTYPE_P2P_CLIENT: p2p_client_supported = 1; break; case NL80211_IFTYPE_MONITOR: info->monitor_supported = 1; break; } } } if (tb[NL80211_ATTR_INTERFACE_COMBINATIONS]) { struct nlattr *nl_combi; int rem_combi; nla_for_each_nested(nl_combi, tb[NL80211_ATTR_INTERFACE_COMBINATIONS], rem_combi) { struct nlattr *tb_comb[NUM_NL80211_IFACE_COMB]; struct nlattr *tb_limit[NUM_NL80211_IFACE_LIMIT]; struct nlattr *nl_limit, *nl_mode; int err, rem_limit, rem_mode; int combination_has_p2p = 0, combination_has_mgd = 0; err = nla_parse_nested(tb_comb, MAX_NL80211_IFACE_COMB, nl_combi, iface_combination_policy); if (err || !tb_comb[NL80211_IFACE_COMB_LIMITS] || !tb_comb[NL80211_IFACE_COMB_MAXNUM] || !tb_comb[NL80211_IFACE_COMB_NUM_CHANNELS]) goto broken_combination; nla_for_each_nested(nl_limit, tb_comb[NL80211_IFACE_COMB_LIMITS], rem_limit) { err = nla_parse_nested(tb_limit, MAX_NL80211_IFACE_LIMIT, nl_limit, iface_limit_policy); if (err || !tb_limit[NL80211_IFACE_LIMIT_TYPES]) goto broken_combination; nla_for_each_nested( nl_mode, tb_limit[NL80211_IFACE_LIMIT_TYPES], rem_mode) { int ift = nla_type(nl_mode); if (ift == NL80211_IFTYPE_P2P_GO || ift == NL80211_IFTYPE_P2P_CLIENT) combination_has_p2p = 1; if (ift == NL80211_IFTYPE_STATION) combination_has_mgd = 1; } if (combination_has_p2p && combination_has_mgd) break; } if (combination_has_p2p && combination_has_mgd) { p2p_concurrent = 1; if (nla_get_u32(tb_comb[NL80211_IFACE_COMB_NUM_CHANNELS]) > 1) p2p_multichan_concurrent = 1; break; } broken_combination: ; } } if (tb[NL80211_ATTR_SUPPORTED_COMMANDS]) { struct nlattr *nl_cmd; int i; nla_for_each_nested(nl_cmd, tb[NL80211_ATTR_SUPPORTED_COMMANDS], i) { switch (nla_get_u32(nl_cmd)) { case NL80211_CMD_AUTHENTICATE: auth_supported = 1; break; case NL80211_CMD_CONNECT: connect_supported = 1; break; case NL80211_CMD_START_SCHED_SCAN: capa->sched_scan_supported = 1; break; case NL80211_CMD_PROBE_CLIENT: info->poll_command_supported = 1; break; } } } if (tb[NL80211_ATTR_OFFCHANNEL_TX_OK]) { wpa_printf(MSG_DEBUG, "nl80211: Using driver-based " "off-channel TX"); capa->flags |= WPA_DRIVER_FLAGS_OFFCHANNEL_TX; } if (tb[NL80211_ATTR_ROAM_SUPPORT]) { wpa_printf(MSG_DEBUG, "nl80211: Using driver-based roaming"); capa->flags |= WPA_DRIVER_FLAGS_BSS_SELECTION; } /* default to 5000 since early versions of mac80211 don't set it */ capa->max_remain_on_chan = 5000; if (tb[NL80211_ATTR_SUPPORT_AP_UAPSD]) capa->flags |= WPA_DRIVER_FLAGS_AP_UAPSD; if (tb[NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION]) capa->max_remain_on_chan = nla_get_u32(tb[NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION]); if (auth_supported) capa->flags |= WPA_DRIVER_FLAGS_SME; else if (!connect_supported) { wpa_printf(MSG_INFO, "nl80211: Driver does not support " "authentication/association or connect commands"); info->error = 1; } if (p2p_go_supported && p2p_client_supported) capa->flags |= WPA_DRIVER_FLAGS_P2P_CAPABLE; if (p2p_concurrent) { wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group " "interface (driver advertised support)"); capa->flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT; capa->flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P; if (p2p_multichan_concurrent) { wpa_printf(MSG_DEBUG, "nl80211: Enable multi-channel " "concurrent (driver advertised support)"); capa->flags |= WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT; } } if (tb[NL80211_ATTR_TDLS_SUPPORT]) { wpa_printf(MSG_DEBUG, "nl80211: TDLS supported"); capa->flags |= WPA_DRIVER_FLAGS_TDLS_SUPPORT; if (tb[NL80211_ATTR_TDLS_EXTERNAL_SETUP]) { wpa_printf(MSG_DEBUG, "nl80211: TDLS external setup"); capa->flags |= WPA_DRIVER_FLAGS_TDLS_EXTERNAL_SETUP; } } if (tb[NL80211_ATTR_DEVICE_AP_SME]) info->device_ap_sme = 1; if (tb[NL80211_ATTR_FEATURE_FLAGS]) { u32 flags = nla_get_u32(tb[NL80211_ATTR_FEATURE_FLAGS]); if (flags & NL80211_FEATURE_SK_TX_STATUS) info->data_tx_status = 1; if (flags & NL80211_FEATURE_INACTIVITY_TIMER) capa->flags |= WPA_DRIVER_FLAGS_INACTIVITY_TIMER; } if (tb[NL80211_ATTR_PROBE_RESP_OFFLOAD]) { int protocols = nla_get_u32(tb[NL80211_ATTR_PROBE_RESP_OFFLOAD]); wpa_printf(MSG_DEBUG, "nl80211: Supports Probe Response " "offload in AP mode"); capa->flags |= WPA_DRIVER_FLAGS_PROBE_RESP_OFFLOAD; capa->probe_resp_offloads = probe_resp_offload_support(protocols); } return NL_SKIP; } static int wpa_driver_nl80211_get_info(struct wpa_driver_nl80211_data *drv, struct wiphy_info_data *info) { struct nl_msg *msg; os_memset(info, 0, sizeof(*info)); info->capa = &drv->capa; msg = nlmsg_alloc(); if (!msg) return -1; nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_WIPHY); NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->first_bss.ifindex); if (send_and_recv_msgs(drv, msg, wiphy_info_handler, info) == 0) return 0; msg = NULL; nla_put_failure: nlmsg_free(msg); return -1; } static int wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv) { struct wiphy_info_data info; if (wpa_driver_nl80211_get_info(drv, &info)) return -1; if (info.error) return -1; drv->has_capability = 1; /* For now, assume TKIP, CCMP, WPA, WPA2 are supported */ drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA | WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK | WPA_DRIVER_CAPA_KEY_MGMT_WPA2 | WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK; drv->capa.enc = WPA_DRIVER_CAPA_ENC_WEP40 | WPA_DRIVER_CAPA_ENC_WEP104 | WPA_DRIVER_CAPA_ENC_TKIP | WPA_DRIVER_CAPA_ENC_CCMP; drv->capa.auth = WPA_DRIVER_AUTH_OPEN | WPA_DRIVER_AUTH_SHARED | WPA_DRIVER_AUTH_LEAP; drv->capa.flags |= WPA_DRIVER_FLAGS_SANE_ERROR_CODES; drv->capa.flags |= WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE; drv->capa.flags |= WPA_DRIVER_FLAGS_EAPOL_TX_STATUS; if (!info.device_ap_sme) { drv->capa.flags |= WPA_DRIVER_FLAGS_DEAUTH_TX_STATUS; /* * No AP SME is currently assumed to also indicate no AP MLME * in the driver/firmware. */ drv->capa.flags |= WPA_DRIVER_FLAGS_AP_MLME; } drv->device_ap_sme = info.device_ap_sme; drv->poll_command_supported = info.poll_command_supported; drv->data_tx_status = info.data_tx_status; #if defined(ANDROID_P2P) && !defined(LEGACY_STA_EVENTS) if(drv->capa.flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX) { /* Driver is new enough to support monitorless mode*/ wpa_printf(MSG_DEBUG, "nl80211: Driver is new " "enough to support monitor-less mode"); drv->use_monitor = 0; } #else /* * If poll command and tx status are supported, mac80211 is new enough * to have everything we need to not need monitor interfaces. */ drv->use_monitor = !info.poll_command_supported || !info.data_tx_status; #endif if (drv->device_ap_sme && drv->use_monitor) { /* * Non-mac80211 drivers may not support monitor interface. * Make sure we do not get stuck with incorrect capability here * by explicitly testing this. */ if (!info.monitor_supported) { wpa_printf(MSG_DEBUG, "nl80211: Disable use_monitor " "with device_ap_sme since no monitor mode " "support detected"); drv->use_monitor = 0; } } /* * If we aren't going to use monitor interfaces, but the * driver doesn't support data TX status, we won't get TX * status for EAPOL frames. */ if (!drv->use_monitor && !info.data_tx_status) drv->capa.flags &= ~WPA_DRIVER_FLAGS_EAPOL_TX_STATUS; return 0; } #ifdef ANDROID static int android_genl_ctrl_resolve(struct nl_handle *handle, const char *name) { /* * Android ICS has very minimal genl_ctrl_resolve() implementation, so * need to work around that. */ struct nl_cache *cache = NULL; struct genl_family *nl80211 = NULL; int id = -1; if (genl_ctrl_alloc_cache(handle, &cache) < 0) { wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic " "netlink cache"); goto fail; } nl80211 = genl_ctrl_search_by_name(cache, name); if (nl80211 == NULL) goto fail; id = genl_family_get_id(nl80211); fail: if (nl80211) genl_family_put(nl80211); if (cache) nl_cache_free(cache); return id; } #define genl_ctrl_resolve android_genl_ctrl_resolve #endif /* ANDROID */ static int wpa_driver_nl80211_init_nl_global(struct nl80211_global *global) { int ret; global->nl_cb = nl_cb_alloc(NL_CB_DEFAULT); if (global->nl_cb == NULL) { wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink " "callbacks"); return -1; } global->nl = nl_create_handle(global->nl_cb, "nl"); if (global->nl == NULL) goto err; global->nl80211_id = genl_ctrl_resolve(global->nl, "nl80211"); if (global->nl80211_id < 0) { wpa_printf(MSG_ERROR, "nl80211: 'nl80211' generic netlink not " "found"); goto err; } global->nl_event = nl_create_handle(global->nl_cb, "event"); if (global->nl_event == NULL) goto err; ret = nl_get_multicast_id(global, "nl80211", "scan"); if (ret >= 0) ret = nl_socket_add_membership(global->nl_event, ret); if (ret < 0) { wpa_printf(MSG_ERROR, "nl80211: Could not add multicast " "membership for scan events: %d (%s)", ret, strerror(-ret)); goto err; } ret = nl_get_multicast_id(global, "nl80211", "mlme"); if (ret >= 0) ret = nl_socket_add_membership(global->nl_event, ret); if (ret < 0) { wpa_printf(MSG_ERROR, "nl80211: Could not add multicast " "membership for mlme events: %d (%s)", ret, strerror(-ret)); goto err; } ret = nl_get_multicast_id(global, "nl80211", "regulatory"); if (ret >= 0) ret = nl_socket_add_membership(global->nl_event, ret); if (ret < 0) { wpa_printf(MSG_DEBUG, "nl80211: Could not add multicast " "membership for regulatory events: %d (%s)", ret, strerror(-ret)); /* Continue without regulatory events */ } nl_cb_set(global->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, no_seq_check, NULL); nl_cb_set(global->nl_cb, NL_CB_VALID, NL_CB_CUSTOM, process_global_event, global); eloop_register_read_sock(nl_socket_get_fd(global->nl_event), wpa_driver_nl80211_event_receive, global->nl_cb, global->nl_event); return 0; err: nl_destroy_handles(&global->nl_event); nl_destroy_handles(&global->nl); nl_cb_put(global->nl_cb); global->nl_cb = NULL; return -1; } static int wpa_driver_nl80211_init_nl(struct wpa_driver_nl80211_data *drv) { drv->nl_cb = nl_cb_alloc(NL_CB_DEFAULT); if (!drv->nl_cb) { wpa_printf(MSG_ERROR, "nl80211: Failed to alloc cb struct"); return -1; } nl_cb_set(drv->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, no_seq_check, NULL); nl_cb_set(drv->nl_cb, NL_CB_VALID, NL_CB_CUSTOM, process_drv_event, drv); return 0; } static void wpa_driver_nl80211_rfkill_blocked(void *ctx) { wpa_printf(MSG_DEBUG, "nl80211: RFKILL blocked"); /* * This may be for any interface; use ifdown event to disable * interface. */ } static void wpa_driver_nl80211_rfkill_unblocked(void *ctx) { struct wpa_driver_nl80211_data *drv = ctx; wpa_printf(MSG_DEBUG, "nl80211: RFKILL unblocked"); if (linux_set_iface_flags(drv->global->ioctl_sock, drv->first_bss.ifname, 1)) { wpa_printf(MSG_DEBUG, "nl80211: Could not set interface UP " "after rfkill unblock"); return; } /* rtnetlink ifup handler will report interface as enabled */ } static void nl80211_get_phy_name(struct wpa_driver_nl80211_data *drv) { /* Find phy (radio) to which this interface belongs */ char buf[90], *pos; int f, rv; drv->phyname[0] = '\0'; snprintf(buf, sizeof(buf) - 1, "/sys/class/net/%s/phy80211/name", drv->first_bss.ifname); f = open(buf, O_RDONLY); if (f < 0) { wpa_printf(MSG_DEBUG, "Could not open file %s: %s", buf, strerror(errno)); return; } rv = read(f, drv->phyname, sizeof(drv->phyname) - 1); close(f); if (rv < 0) { wpa_printf(MSG_DEBUG, "Could not read file %s: %s", buf, strerror(errno)); return; } drv->phyname[rv] = '\0'; pos = os_strchr(drv->phyname, '\n'); if (pos) *pos = '\0'; wpa_printf(MSG_DEBUG, "nl80211: interface %s in phy %s", drv->first_bss.ifname, drv->phyname); } static void wpa_driver_nl80211_handle_eapol_tx_status(int sock, void *eloop_ctx, void *handle) { struct wpa_driver_nl80211_data *drv = eloop_ctx; u8 data[2048]; struct msghdr msg; struct iovec entry; u8 control[512]; struct cmsghdr *cmsg; int res, found_ee = 0, found_wifi = 0, acked = 0; union wpa_event_data event; memset(&msg, 0, sizeof(msg)); msg.msg_iov = &entry; msg.msg_iovlen = 1; entry.iov_base = data; entry.iov_len = sizeof(data); msg.msg_control = &control; msg.msg_controllen = sizeof(control); res = recvmsg(sock, &msg, MSG_ERRQUEUE); /* if error or not fitting 802.3 header, return */ if (res < 14) return; for (cmsg = CMSG_FIRSTHDR(&msg); cmsg; cmsg = CMSG_NXTHDR(&msg, cmsg)) { if (cmsg->cmsg_level == SOL_SOCKET && cmsg->cmsg_type == SCM_WIFI_STATUS) { int *ack; found_wifi = 1; ack = (void *)CMSG_DATA(cmsg); acked = *ack; } if (cmsg->cmsg_level == SOL_PACKET && cmsg->cmsg_type == PACKET_TX_TIMESTAMP) { struct sock_extended_err *err = (struct sock_extended_err *)CMSG_DATA(cmsg); if (err->ee_origin == SO_EE_ORIGIN_TXSTATUS) found_ee = 1; } } if (!found_ee || !found_wifi) return; memset(&event, 0, sizeof(event)); event.eapol_tx_status.dst = data; event.eapol_tx_status.data = data + 14; event.eapol_tx_status.data_len = res - 14; event.eapol_tx_status.ack = acked; wpa_supplicant_event(drv->ctx, EVENT_EAPOL_TX_STATUS, &event); } static int nl80211_init_bss(struct i802_bss *bss) { bss->nl_cb = nl_cb_alloc(NL_CB_DEFAULT); if (!bss->nl_cb) return -1; nl_cb_set(bss->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, no_seq_check, NULL); nl_cb_set(bss->nl_cb, NL_CB_VALID, NL_CB_CUSTOM, process_bss_event, bss); return 0; } static void nl80211_destroy_bss(struct i802_bss *bss) { nl_cb_put(bss->nl_cb); bss->nl_cb = NULL; } /** * wpa_driver_nl80211_init - Initialize nl80211 driver interface * @ctx: context to be used when calling wpa_supplicant functions, * e.g., wpa_supplicant_event() * @ifname: interface name, e.g., wlan0 * @global_priv: private driver global data from global_init() * Returns: Pointer to private data, %NULL on failure */ static void * wpa_driver_nl80211_init(void *ctx, const char *ifname, void *global_priv) { struct wpa_driver_nl80211_data *drv; struct rfkill_config *rcfg; struct i802_bss *bss; if (global_priv == NULL) return NULL; drv = os_zalloc(sizeof(*drv)); if (drv == NULL) return NULL; drv->global = global_priv; drv->ctx = ctx; bss = &drv->first_bss; bss->drv = drv; os_strlcpy(bss->ifname, ifname, sizeof(bss->ifname)); drv->monitor_ifidx = -1; drv->monitor_sock = -1; drv->eapol_tx_sock = -1; drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED; if (wpa_driver_nl80211_init_nl(drv)) { os_free(drv); return NULL; } if (nl80211_init_bss(bss)) goto failed; nl80211_get_phy_name(drv); rcfg = os_zalloc(sizeof(*rcfg)); if (rcfg == NULL) goto failed; rcfg->ctx = drv; os_strlcpy(rcfg->ifname, ifname, sizeof(rcfg->ifname)); rcfg->blocked_cb = wpa_driver_nl80211_rfkill_blocked; rcfg->unblocked_cb = wpa_driver_nl80211_rfkill_unblocked; drv->rfkill = rfkill_init(rcfg); if (drv->rfkill == NULL) { wpa_printf(MSG_DEBUG, "nl80211: RFKILL status not available"); os_free(rcfg); } if (wpa_driver_nl80211_finish_drv_init(drv)) goto failed; drv->eapol_tx_sock = socket(PF_PACKET, SOCK_DGRAM, 0); if (drv->eapol_tx_sock < 0) goto failed; if (drv->data_tx_status) { int enabled = 1; if (setsockopt(drv->eapol_tx_sock, SOL_SOCKET, SO_WIFI_STATUS, &enabled, sizeof(enabled)) < 0) { wpa_printf(MSG_DEBUG, "nl80211: wifi status sockopt failed\n"); drv->data_tx_status = 0; if (!drv->use_monitor) drv->capa.flags &= ~WPA_DRIVER_FLAGS_EAPOL_TX_STATUS; } else { eloop_register_read_sock(drv->eapol_tx_sock, wpa_driver_nl80211_handle_eapol_tx_status, drv, NULL); } } if (drv->global) { dl_list_add(&drv->global->interfaces, &drv->list); drv->in_interface_list = 1; } return bss; failed: wpa_driver_nl80211_deinit(bss); return NULL; } static int nl80211_register_frame(struct i802_bss *bss, struct nl_handle *nl_handle, u16 type, const u8 *match, size_t match_len) { struct wpa_driver_nl80211_data *drv = bss->drv; struct nl_msg *msg; int ret = -1; msg = nlmsg_alloc(); if (!msg) return -1; wpa_printf(MSG_DEBUG, "nl80211: Register frame type=0x%x nl_handle=%p", type, nl_handle); wpa_hexdump(MSG_DEBUG, "nl80211: Register frame match", match, match_len); nl80211_cmd(drv, msg, 0, NL80211_CMD_REGISTER_ACTION); NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE, type); NLA_PUT(msg, NL80211_ATTR_FRAME_MATCH, match_len, match); ret = send_and_recv(drv->global, nl_handle, msg, NULL, NULL); msg = NULL; if (ret) { wpa_printf(MSG_DEBUG, "nl80211: Register frame command " "failed (type=%u): ret=%d (%s)", type, ret, strerror(-ret)); wpa_hexdump(MSG_DEBUG, "nl80211: Register frame match", match, match_len); goto nla_put_failure; } ret = 0; nla_put_failure: nlmsg_free(msg); return ret; } static int nl80211_alloc_mgmt_handle(struct i802_bss *bss) { struct wpa_driver_nl80211_data *drv = bss->drv; if (bss->nl_mgmt) { wpa_printf(MSG_DEBUG, "nl80211: Mgmt reporting " "already on! (nl_mgmt=%p)", bss->nl_mgmt); return -1; } bss->nl_mgmt = nl_create_handle(drv->nl_cb, "mgmt"); if (bss->nl_mgmt == NULL) return -1; eloop_register_read_sock(nl_socket_get_fd(bss->nl_mgmt), wpa_driver_nl80211_event_receive, bss->nl_cb, bss->nl_mgmt); return 0; } static int nl80211_register_action_frame(struct i802_bss *bss, const u8 *match, size_t match_len) { u16 type = (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_ACTION << 4); return nl80211_register_frame(bss, bss->nl_mgmt, type, match, match_len); } static int nl80211_mgmt_subscribe_non_ap(struct i802_bss *bss) { struct wpa_driver_nl80211_data *drv = bss->drv; if (nl80211_alloc_mgmt_handle(bss)) return -1; wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with non-AP " "handle %p", bss->nl_mgmt); #if defined(CONFIG_P2P) || defined(CONFIG_INTERWORKING) /* GAS Initial Request */ if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0a", 2) < 0) return -1; /* GAS Initial Response */ if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0b", 2) < 0) return -1; /* GAS Comeback Request */ if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0c", 2) < 0) return -1; /* GAS Comeback Response */ if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0d", 2) < 0) return -1; #endif /* CONFIG_P2P || CONFIG_INTERWORKING */ #ifdef CONFIG_P2P /* P2P Public Action */ if (nl80211_register_action_frame(bss, (u8 *) "\x04\x09\x50\x6f\x9a\x09", 6) < 0) return -1; /* P2P Action */ if (nl80211_register_action_frame(bss, (u8 *) "\x7f\x50\x6f\x9a\x09", 5) < 0) return -1; #endif /* CONFIG_P2P */ #ifdef CONFIG_IEEE80211W /* SA Query Response */ if (nl80211_register_action_frame(bss, (u8 *) "\x08\x01", 2) < 0) return -1; #endif /* CONFIG_IEEE80211W */ #ifdef CONFIG_TDLS if ((drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) { /* TDLS Discovery Response */ if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0e", 2) < 0) return -1; } #endif /* CONFIG_TDLS */ /* FT Action frames */ if (nl80211_register_action_frame(bss, (u8 *) "\x06", 1) < 0) return -1; else drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_FT | WPA_DRIVER_CAPA_KEY_MGMT_FT_PSK; /* WNM - BSS Transition Management Request */ if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x07", 2) < 0) return -1; return 0; } static int nl80211_register_spurious_class3(struct i802_bss *bss) { struct wpa_driver_nl80211_data *drv = bss->drv; struct nl_msg *msg; int ret = -1; msg = nlmsg_alloc(); if (!msg) return -1; nl80211_cmd(drv, msg, 0, NL80211_CMD_UNEXPECTED_FRAME); NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); ret = send_and_recv(drv->global, bss->nl_mgmt, msg, NULL, NULL); msg = NULL; if (ret) { wpa_printf(MSG_DEBUG, "nl80211: Register spurious class3 " "failed: ret=%d (%s)", ret, strerror(-ret)); goto nla_put_failure; } ret = 0; nla_put_failure: nlmsg_free(msg); return ret; } static int nl80211_mgmt_subscribe_ap(struct i802_bss *bss) { static const int stypes[] = { WLAN_FC_STYPE_AUTH, WLAN_FC_STYPE_ASSOC_REQ, WLAN_FC_STYPE_REASSOC_REQ, WLAN_FC_STYPE_DISASSOC, WLAN_FC_STYPE_DEAUTH, WLAN_FC_STYPE_ACTION, WLAN_FC_STYPE_PROBE_REQ, /* Beacon doesn't work as mac80211 doesn't currently allow * it, but it wouldn't really be the right thing anyway as * it isn't per interface ... maybe just dump the scan * results periodically for OLBC? */ // WLAN_FC_STYPE_BEACON, }; unsigned int i; if (nl80211_alloc_mgmt_handle(bss)) return -1; wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP " "handle %p", bss->nl_mgmt); for (i = 0; i < sizeof(stypes) / sizeof(stypes[0]); i++) { if (nl80211_register_frame(bss, bss->nl_mgmt, (WLAN_FC_TYPE_MGMT << 2) | (stypes[i] << 4), NULL, 0) < 0) { goto out_err; } } if (nl80211_register_spurious_class3(bss)) goto out_err; if (nl80211_get_wiphy_data_ap(bss) == NULL) goto out_err; return 0; out_err: eloop_unregister_read_sock(nl_socket_get_fd(bss->nl_mgmt)); nl_destroy_handles(&bss->nl_mgmt); return -1; } static int nl80211_mgmt_subscribe_ap_dev_sme(struct i802_bss *bss) { if (nl80211_alloc_mgmt_handle(bss)) return -1; wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP " "handle %p (device SME)", bss->nl_mgmt); if (nl80211_register_frame(bss, bss->nl_mgmt, (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_ACTION << 4), NULL, 0) < 0) goto out_err; return 0; out_err: eloop_unregister_read_sock(nl_socket_get_fd(bss->nl_mgmt)); nl_destroy_handles(&bss->nl_mgmt); return -1; } static void nl80211_mgmt_unsubscribe(struct i802_bss *bss, const char *reason) { if (bss->nl_mgmt == NULL) return; wpa_printf(MSG_DEBUG, "nl80211: Unsubscribe mgmt frames handle %p " "(%s)", bss->nl_mgmt, reason); eloop_unregister_read_sock(nl_socket_get_fd(bss->nl_mgmt)); nl_destroy_handles(&bss->nl_mgmt); nl80211_put_wiphy_data_ap(bss); } static void wpa_driver_nl80211_send_rfkill(void *eloop_ctx, void *timeout_ctx) { wpa_supplicant_event(timeout_ctx, EVENT_INTERFACE_DISABLED, NULL); } static int wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv) { struct i802_bss *bss = &drv->first_bss; int send_rfkill_event = 0; drv->ifindex = if_nametoindex(bss->ifname); drv->first_bss.ifindex = drv->ifindex; #ifndef HOSTAPD /* * Make sure the interface starts up in station mode unless this is a * dynamically added interface (e.g., P2P) that was already configured * with proper iftype. */ if (drv->ifindex != drv->global->if_add_ifindex && wpa_driver_nl80211_set_mode(bss, NL80211_IFTYPE_STATION) < 0) { wpa_printf(MSG_ERROR, "nl80211: Could not configure driver to " "use managed mode"); return -1; } if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1)) { if (rfkill_is_blocked(drv->rfkill)) { wpa_printf(MSG_DEBUG, "nl80211: Could not yet enable " "interface '%s' due to rfkill", bss->ifname); drv->if_disabled = 1; send_rfkill_event = 1; } else { wpa_printf(MSG_ERROR, "nl80211: Could not set " "interface '%s' UP", bss->ifname); return -1; } } netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, 1, IF_OPER_DORMANT); #endif /* HOSTAPD */ if (wpa_driver_nl80211_capa(drv)) return -1; if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname, bss->addr)) return -1; if (send_rfkill_event) { eloop_register_timeout(0, 0, wpa_driver_nl80211_send_rfkill, drv, drv->ctx); } return 0; } static int wpa_driver_nl80211_del_beacon(struct wpa_driver_nl80211_data *drv) { struct nl_msg *msg; msg = nlmsg_alloc(); if (!msg) return -ENOMEM; nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_BEACON); NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); return send_and_recv_msgs(drv, msg, NULL, NULL); nla_put_failure: nlmsg_free(msg); return -ENOBUFS; } /** * wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface * @priv: Pointer to private nl80211 data from wpa_driver_nl80211_init() * * Shut down driver interface and processing of driver events. Free * private data buffer if one was allocated in wpa_driver_nl80211_init(). */ static void wpa_driver_nl80211_deinit(void *priv) { struct i802_bss *bss = priv; struct wpa_driver_nl80211_data *drv = bss->drv; bss->in_deinit = 1; if (drv->data_tx_status) eloop_unregister_read_sock(drv->eapol_tx_sock); if (drv->eapol_tx_sock >= 0) close(drv->eapol_tx_sock); if (bss->nl_preq) wpa_driver_nl80211_probe_req_report(bss, 0); if (bss->added_if_into_bridge) { if (linux_br_del_if(drv->global->ioctl_sock, bss->brname, bss->ifname) < 0) wpa_printf(MSG_INFO, "nl80211: Failed to remove " "interface %s from bridge %s: %s", bss->ifname, bss->brname, strerror(errno)); } if (bss->added_bridge) { if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0) wpa_printf(MSG_INFO, "nl80211: Failed to remove " "bridge %s: %s", bss->brname, strerror(errno)); } nl80211_remove_monitor_interface(drv); if (is_ap_interface(drv->nlmode)) wpa_driver_nl80211_del_beacon(drv); #ifdef HOSTAPD if (drv->last_freq_ht) { /* Clear HT flags from the driver */ struct hostapd_freq_params freq; os_memset(&freq, 0, sizeof(freq)); freq.freq = drv->last_freq; i802_set_freq(priv, &freq); } if (drv->eapol_sock >= 0) { eloop_unregister_read_sock(drv->eapol_sock); close(drv->eapol_sock); } if (drv->if_indices != drv->default_if_indices) os_free(drv->if_indices); #endif /* HOSTAPD */ if (drv->disabled_11b_rates) nl80211_disable_11b_rates(drv, drv->ifindex, 0); netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, 0, IF_OPER_UP); rfkill_deinit(drv->rfkill); eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx); (void) linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0); wpa_driver_nl80211_set_mode(bss, NL80211_IFTYPE_STATION); nl80211_mgmt_unsubscribe(bss, "deinit"); nl_cb_put(drv->nl_cb); nl80211_destroy_bss(&drv->first_bss); os_free(drv->filter_ssids); os_free(drv->auth_ie); if (drv->in_interface_list) dl_list_del(&drv->list); os_free(drv); } /** * wpa_driver_nl80211_scan_timeout - Scan timeout to report scan completion * @eloop_ctx: Driver private data * @timeout_ctx: ctx argument given to wpa_driver_nl80211_init() * * This function can be used as registered timeout when starting a scan to * generate a scan completed event if the driver does not report this. */ static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, void *timeout_ctx) { struct wpa_driver_nl80211_data *drv = eloop_ctx; if (drv->ap_scan_as_station != NL80211_IFTYPE_UNSPECIFIED) { wpa_driver_nl80211_set_mode(&drv->first_bss, drv->ap_scan_as_station); drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED; } wpa_printf(MSG_DEBUG, "Scan timeout - try to get results"); wpa_supplicant_event(timeout_ctx, EVENT_SCAN_RESULTS, NULL); } static struct nl_msg * nl80211_scan_common(struct wpa_driver_nl80211_data *drv, u8 cmd, struct wpa_driver_scan_params *params) { struct nl_msg *msg; int err; size_t i; msg = nlmsg_alloc(); if (!msg) return NULL; nl80211_cmd(drv, msg, 0, cmd); if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, drv->ifindex) < 0) goto fail; if (params->num_ssids) { struct nl_msg *ssids = nlmsg_alloc(); if (ssids == NULL) goto fail; for (i = 0; i < params->num_ssids; i++) { wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Scan SSID", params->ssids[i].ssid, params->ssids[i].ssid_len); if (nla_put(ssids, i + 1, params->ssids[i].ssid_len, params->ssids[i].ssid) < 0) { nlmsg_free(ssids); goto fail; } } err = nla_put_nested(msg, NL80211_ATTR_SCAN_SSIDS, ssids); nlmsg_free(ssids); if (err < 0) goto fail; } if (params->extra_ies) { wpa_hexdump(MSG_MSGDUMP, "nl80211: Scan extra IEs", params->extra_ies, params->extra_ies_len); if (nla_put(msg, NL80211_ATTR_IE, params->extra_ies_len, params->extra_ies) < 0) goto fail; } if (params->freqs) { struct nl_msg *freqs = nlmsg_alloc(); if (freqs == NULL) goto fail; for (i = 0; params->freqs[i]; i++) { wpa_printf(MSG_MSGDUMP, "nl80211: Scan frequency %u " "MHz", params->freqs[i]); if (nla_put_u32(freqs, i + 1, params->freqs[i]) < 0) { nlmsg_free(freqs); goto fail; } } err = nla_put_nested(msg, NL80211_ATTR_SCAN_FREQUENCIES, freqs); nlmsg_free(freqs); if (err < 0) goto fail; } os_free(drv->filter_ssids); drv->filter_ssids = params->filter_ssids; params->filter_ssids = NULL; drv->num_filter_ssids = params->num_filter_ssids; return msg; fail: nlmsg_free(msg); return NULL; } /** * wpa_driver_nl80211_scan - Request the driver to initiate scan * @priv: Pointer to private driver data from wpa_driver_nl80211_init() * @params: Scan parameters * Returns: 0 on success, -1 on failure */ static int wpa_driver_nl80211_scan(void *priv, struct wpa_driver_scan_params *params) { struct i802_bss *bss = priv; struct wpa_driver_nl80211_data *drv = bss->drv; int ret = -1, timeout; struct nl_msg *msg, *rates = NULL; drv->scan_for_auth = 0; msg = nl80211_scan_common(drv, NL80211_CMD_TRIGGER_SCAN, params); if (!msg) return -1; if (params->p2p_probe) { wpa_printf(MSG_DEBUG, "nl80211: P2P probe - mask SuppRates"); rates = nlmsg_alloc(); if (rates == NULL) goto nla_put_failure; /* * Remove 2.4 GHz rates 1, 2, 5.5, 11 Mbps from supported rates * by masking out everything else apart from the OFDM rates 6, * 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS rates. All 5 GHz * rates are left enabled. */ NLA_PUT(rates, NL80211_BAND_2GHZ, 8, "\x0c\x12\x18\x24\x30\x48\x60\x6c"); if (nla_put_nested(msg, NL80211_ATTR_SCAN_SUPP_RATES, rates) < 0) goto nla_put_failure; NLA_PUT_FLAG(msg, NL80211_ATTR_TX_NO_CCK_RATE); } ret = send_and_recv_msgs(drv, msg, NULL, NULL); msg = NULL; if (ret) { wpa_printf(MSG_DEBUG, "nl80211: Scan trigger failed: ret=%d " "(%s)", ret, strerror(-ret)); #ifdef HOSTAPD if (is_ap_interface(drv->nlmode)) { /* * mac80211 does not allow scan requests in AP mode, so * try to do this in station mode. */ if (wpa_driver_nl80211_set_mode( bss, NL80211_IFTYPE_STATION)) goto nla_put_failure; if (wpa_driver_nl80211_scan(drv, params)) { wpa_driver_nl80211_set_mode(bss, drv->nlmode); goto nla_put_failure; } /* Restore AP mode when processing scan results */ drv->ap_scan_as_station = drv->nlmode; ret = 0; } else goto nla_put_failure; #else /* HOSTAPD */ goto nla_put_failure; #endif /* HOSTAPD */ } /* Not all drivers generate "scan completed" wireless event, so try to * read results after a timeout. */ timeout = 10; if (drv->scan_complete_events) { /* * The driver seems to deliver events to notify when scan is * complete, so use longer timeout to avoid race conditions * with scanning and following association request. */ timeout = 30; } wpa_printf(MSG_DEBUG, "Scan requested (ret=%d) - scan timeout %d " "seconds", ret, timeout); eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx); eloop_register_timeout(timeout, 0, wpa_driver_nl80211_scan_timeout, drv, drv->ctx); nla_put_failure: nlmsg_free(msg); nlmsg_free(rates); return ret; } /** * wpa_driver_nl80211_sched_scan - Initiate a scheduled scan * @priv: Pointer to private driver data from wpa_driver_nl80211_init() * @params: Scan parameters * @interval: Interval between scan cycles in milliseconds * Returns: 0 on success, -1 on failure or if not supported */ static int wpa_driver_nl80211_sched_scan(void *priv, struct wpa_driver_scan_params *params, u32 interval) { struct i802_bss *bss = priv; struct wpa_driver_nl80211_data *drv = bss->drv; int ret = -1; struct nl_msg *msg; struct nl_msg *match_set_ssid = NULL, *match_sets = NULL; struct nl_msg *match_set_rssi = NULL; size_t i; #ifdef ANDROID if (!drv->capa.sched_scan_supported) return android_pno_start(bss, params); #endif /* ANDROID */ msg = nl80211_scan_common(drv, NL80211_CMD_START_SCHED_SCAN, params); if (!msg) goto nla_put_failure; NLA_PUT_U32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL, interval); if ((drv->num_filter_ssids && (int) drv->num_filter_ssids <= drv->capa.max_match_sets) || params->filter_rssi) { match_sets = nlmsg_alloc(); if (match_sets == NULL) goto nla_put_failure; for (i = 0; i < drv->num_filter_ssids; i++) { wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Sched scan filter SSID", drv->filter_ssids[i].ssid, drv->filter_ssids[i].ssid_len); match_set_ssid = nlmsg_alloc(); if (match_set_ssid == NULL) goto nla_put_failure; NLA_PUT(match_set_ssid, NL80211_ATTR_SCHED_SCAN_MATCH_SSID, drv->filter_ssids[i].ssid_len, drv->filter_ssids[i].ssid); if (nla_put_nested(match_sets, i + 1, match_set_ssid) < 0) goto nla_put_failure; } if (params->filter_rssi) { match_set_rssi = nlmsg_alloc(); if (match_set_rssi == NULL) goto nla_put_failure; NLA_PUT_U32(match_set_rssi, NL80211_SCHED_SCAN_MATCH_ATTR_RSSI, params->filter_rssi); wpa_printf(MSG_MSGDUMP, "nl80211: Sched scan RSSI filter %d dBm", params->filter_rssi); if (nla_put_nested(match_sets, 0, match_set_rssi) < 0) goto nla_put_failure; } if (nla_put_nested(msg, NL80211_ATTR_SCHED_SCAN_MATCH, match_sets) < 0) goto nla_put_failure; } ret = send_and_recv_msgs(drv, msg, NULL, NULL); /* TODO: if we get an error here, we should fall back to normal scan */ msg = NULL; if (ret) { wpa_printf(MSG_DEBUG, "nl80211: Sched scan start failed: " "ret=%d (%s)", ret, strerror(-ret)); goto nla_put_failure; } wpa_printf(MSG_DEBUG, "nl80211: Sched scan requested (ret=%d) - " "scan interval %d msec", ret, interval); nla_put_failure: nlmsg_free(match_set_ssid); nlmsg_free(match_sets); nlmsg_free(match_set_rssi); nlmsg_free(msg); return ret; } /** * wpa_driver_nl80211_stop_sched_scan - Stop a scheduled scan * @priv: Pointer to private driver data from wpa_driver_nl80211_init() * Returns: 0 on success, -1 on failure or if not supported */ static int wpa_driver_nl80211_stop_sched_scan(void *priv) { struct i802_bss *bss = priv; struct wpa_driver_nl80211_data *drv = bss->drv; int ret = 0; struct nl_msg *msg; #ifdef ANDROID if (!drv->capa.sched_scan_supported) return android_pno_stop(bss); #endif /* ANDROID */ msg = nlmsg_alloc(); if (!msg) return -1; nl80211_cmd(drv, msg, 0, NL80211_CMD_STOP_SCHED_SCAN); NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); ret = send_and_recv_msgs(drv, msg, NULL, NULL); msg = NULL; if (ret) { wpa_printf(MSG_DEBUG, "nl80211: Sched scan stop failed: " "ret=%d (%s)", ret, strerror(-ret)); goto nla_put_failure; } wpa_printf(MSG_DEBUG, "nl80211: Sched scan stop sent (ret=%d)", ret); nla_put_failure: nlmsg_free(msg); return ret; } static const u8 * nl80211_get_ie(const u8 *ies, size_t ies_len, u8 ie) { const u8 *end, *pos; if (ies == NULL) return NULL; pos = ies; end = ies + ies_len; while (pos + 1 < end) { if (pos + 2 + pos[1] > end) break; if (pos[0] == ie) return pos; pos += 2 + pos[1]; } return NULL; } static int nl80211_scan_filtered(struct wpa_driver_nl80211_data *drv, const u8 *ie, size_t ie_len) { const u8 *ssid; size_t i; if (drv->filter_ssids == NULL) return 0; ssid = nl80211_get_ie(ie, ie_len, WLAN_EID_SSID); if (ssid == NULL) return 1; for (i = 0; i < drv->num_filter_ssids; i++) { if (ssid[1] == drv->filter_ssids[i].ssid_len && os_memcmp(ssid + 2, drv->filter_ssids[i].ssid, ssid[1]) == 0) return 0; } return 1; } static int bss_info_handler(struct nl_msg *msg, void *arg) { struct nlattr *tb[NL80211_ATTR_MAX + 1]; struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); struct nlattr *bss[NL80211_BSS_MAX + 1]; static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = { [NL80211_BSS_BSSID] = { .type = NLA_UNSPEC }, [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 }, [NL80211_BSS_TSF] = { .type = NLA_U64 }, [NL80211_BSS_BEACON_INTERVAL] = { .type = NLA_U16 }, [NL80211_BSS_CAPABILITY] = { .type = NLA_U16 }, [NL80211_BSS_INFORMATION_ELEMENTS] = { .type = NLA_UNSPEC }, [NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 }, [NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 }, [NL80211_BSS_STATUS] = { .type = NLA_U32 }, [NL80211_BSS_SEEN_MS_AGO] = { .type = NLA_U32 }, [NL80211_BSS_BEACON_IES] = { .type = NLA_UNSPEC }, }; struct nl80211_bss_info_arg *_arg = arg; struct wpa_scan_results *res = _arg->res; struct wpa_scan_res **tmp; struct wpa_scan_res *r; const u8 *ie, *beacon_ie; size_t ie_len, beacon_ie_len; u8 *pos; size_t i; nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), genlmsg_attrlen(gnlh, 0), NULL); if (!tb[NL80211_ATTR_BSS]) return NL_SKIP; if (nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS], bss_policy)) return NL_SKIP; if (bss[NL80211_BSS_STATUS]) { enum nl80211_bss_status status; status = nla_get_u32(bss[NL80211_BSS_STATUS]); if (status == NL80211_BSS_STATUS_ASSOCIATED && bss[NL80211_BSS_FREQUENCY]) { _arg->assoc_freq = nla_get_u32(bss[NL80211_BSS_FREQUENCY]); wpa_printf(MSG_DEBUG, "nl80211: Associated on %u MHz", _arg->assoc_freq); } if (status == NL80211_BSS_STATUS_ASSOCIATED && bss[NL80211_BSS_BSSID]) { os_memcpy(_arg->assoc_bssid, nla_data(bss[NL80211_BSS_BSSID]), ETH_ALEN); wpa_printf(MSG_DEBUG, "nl80211: Associated with " MACSTR, MAC2STR(_arg->assoc_bssid)); } } if (!res) return NL_SKIP; if (bss[NL80211_BSS_INFORMATION_ELEMENTS]) { ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]); ie_len = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]); } else { ie = NULL; ie_len = 0; } if (bss[NL80211_BSS_BEACON_IES]) { beacon_ie = nla_data(bss[NL80211_BSS_BEACON_IES]); beacon_ie_len = nla_len(bss[NL80211_BSS_BEACON_IES]); } else { beacon_ie = NULL; beacon_ie_len = 0; } if (nl80211_scan_filtered(_arg->drv, ie ? ie : beacon_ie, ie ? ie_len : beacon_ie_len)) return NL_SKIP; r = os_zalloc(sizeof(*r) + ie_len + beacon_ie_len); if (r == NULL) return NL_SKIP; if (bss[NL80211_BSS_BSSID]) os_memcpy(r->bssid, nla_data(bss[NL80211_BSS_BSSID]), ETH_ALEN); if (bss[NL80211_BSS_FREQUENCY]) r->freq = nla_get_u32(bss[NL80211_BSS_FREQUENCY]); if (bss[NL80211_BSS_BEACON_INTERVAL]) r->beacon_int = nla_get_u16(bss[NL80211_BSS_BEACON_INTERVAL]); if (bss[NL80211_BSS_CAPABILITY]) r->caps = nla_get_u16(bss[NL80211_BSS_CAPABILITY]); r->flags |= WPA_SCAN_NOISE_INVALID; if (bss[NL80211_BSS_SIGNAL_MBM]) { r->level = nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]); r->level /= 100; /* mBm to dBm */ r->flags |= WPA_SCAN_LEVEL_DBM | WPA_SCAN_QUAL_INVALID; } else if (bss[NL80211_BSS_SIGNAL_UNSPEC]) { r->level = nla_get_u8(bss[NL80211_BSS_SIGNAL_UNSPEC]); r->flags |= WPA_SCAN_QUAL_INVALID; } else r->flags |= WPA_SCAN_LEVEL_INVALID | WPA_SCAN_QUAL_INVALID; if (bss[NL80211_BSS_TSF]) r->tsf = nla_get_u64(bss[NL80211_BSS_TSF]); if (bss[NL80211_BSS_SEEN_MS_AGO]) r->age = nla_get_u32(bss[NL80211_BSS_SEEN_MS_AGO]); r->ie_len = ie_len; pos = (u8 *) (r + 1); if (ie) { os_memcpy(pos, ie, ie_len); pos += ie_len; } r->beacon_ie_len = beacon_ie_len; if (beacon_ie) os_memcpy(pos, beacon_ie, beacon_ie_len); if (bss[NL80211_BSS_STATUS]) { enum nl80211_bss_status status; status = nla_get_u32(bss[NL80211_BSS_STATUS]); switch (status) { case NL80211_BSS_STATUS_AUTHENTICATED: r->flags |= WPA_SCAN_AUTHENTICATED; break; case NL80211_BSS_STATUS_ASSOCIATED: r->flags |= WPA_SCAN_ASSOCIATED; break; default: break; } } /* * cfg80211 maintains separate BSS table entries for APs if the same * BSSID,SSID pair is seen on multiple channels. wpa_supplicant does * not use frequency as a separate key in the BSS table, so filter out * duplicated entries. Prefer associated BSS entry in such a case in * order to get the correct frequency into the BSS table. */ for (i = 0; i < res->num; i++) { const u8 *s1, *s2; if (os_memcmp(res->res[i]->bssid, r->bssid, ETH_ALEN) != 0) continue; s1 = nl80211_get_ie((u8 *) (res->res[i] + 1), res->res[i]->ie_len, WLAN_EID_SSID); s2 = nl80211_get_ie((u8 *) (r + 1), r->ie_len, WLAN_EID_SSID); if (s1 == NULL || s2 == NULL || s1[1] != s2[1] || os_memcmp(s1, s2, 2 + s1[1]) != 0) continue; /* Same BSSID,SSID was already included in scan results */ wpa_printf(MSG_DEBUG, "nl80211: Remove duplicated scan result " "for " MACSTR, MAC2STR(r->bssid)); if ((r->flags & WPA_SCAN_ASSOCIATED) && !(res->res[i]->flags & WPA_SCAN_ASSOCIATED)) { os_free(res->res[i]); res->res[i] = r; } else os_free(r); return NL_SKIP; } tmp = os_realloc_array(res->res, res->num + 1, sizeof(struct wpa_scan_res *)); if (tmp == NULL) { os_free(r); return NL_SKIP; } tmp[res->num++] = r; res->res = tmp; return NL_SKIP; } static void clear_state_mismatch(struct wpa_driver_nl80211_data *drv, const u8 *addr) { if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) { wpa_printf(MSG_DEBUG, "nl80211: Clear possible state " "mismatch (" MACSTR ")", MAC2STR(addr)); wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE, WLAN_REASON_PREV_AUTH_NOT_VALID, 1); } } static void wpa_driver_nl80211_check_bss_status( struct wpa_driver_nl80211_data *drv, struct wpa_scan_results *res) { size_t i; for (i = 0; i < res->num; i++) { struct wpa_scan_res *r = res->res[i]; if (r->flags & WPA_SCAN_AUTHENTICATED) { wpa_printf(MSG_DEBUG, "nl80211: Scan results " "indicates BSS status with " MACSTR " as authenticated", MAC2STR(r->bssid)); if (is_sta_interface(drv->nlmode) && os_memcmp(r->bssid, drv->bssid, ETH_ALEN) != 0 && os_memcmp(r->bssid, drv->auth_bssid, ETH_ALEN) != 0) { wpa_printf(MSG_DEBUG, "nl80211: Unknown BSSID" " in local state (auth=" MACSTR " assoc=" MACSTR ")", MAC2STR(drv->auth_bssid), MAC2STR(drv->bssid)); clear_state_mismatch(drv, r->bssid); } } if (r->flags & WPA_SCAN_ASSOCIATED) { wpa_printf(MSG_DEBUG, "nl80211: Scan results " "indicate BSS status with " MACSTR " as associated", MAC2STR(r->bssid)); if (is_sta_interface(drv->nlmode) && !drv->associated) { wpa_printf(MSG_DEBUG, "nl80211: Local state " "(not associated) does not match " "with BSS state"); clear_state_mismatch(drv, r->bssid); } else if (is_sta_interface(drv->nlmode) && os_memcmp(drv->bssid, r->bssid, ETH_ALEN) != 0) { wpa_printf(MSG_DEBUG, "nl80211: Local state " "(associated with " MACSTR ") does " "not match with BSS state", MAC2STR(drv->bssid)); clear_state_mismatch(drv, r->bssid); clear_state_mismatch(drv, drv->bssid); } } } } static struct wpa_scan_results * nl80211_get_scan_results(struct wpa_driver_nl80211_data *drv) { struct nl_msg *msg; struct wpa_scan_results *res; int ret; struct nl80211_bss_info_arg arg; res = os_zalloc(sizeof(*res)); if (res == NULL) return NULL; msg = nlmsg_alloc(); if (!msg) goto nla_put_failure; nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SCAN); NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); arg.drv = drv; arg.res = res; ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg); msg = NULL; if (ret == 0) { wpa_printf(MSG_DEBUG, "nl80211: Received scan results (%lu " "BSSes)", (unsigned long) res->num); nl80211_get_noise_for_scan_results(drv, res); return res; } wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d " "(%s)", ret, strerror(-ret)); nla_put_failure: nlmsg_free(msg); wpa_scan_results_free(res); return NULL; } /** * wpa_driver_nl80211_get_scan_results - Fetch the latest scan results * @priv: Pointer to private wext data from wpa_driver_nl80211_init() * Returns: Scan results on success, -1 on failure */ static struct wpa_scan_results * wpa_driver_nl80211_get_scan_results(void *priv) { struct i802_bss *bss = priv; struct wpa_driver_nl80211_data *drv = bss->drv; struct wpa_scan_results *res; res = nl80211_get_scan_results(drv); if (res) wpa_driver_nl80211_check_bss_status(drv, res); return res; } static void nl80211_dump_scan(struct wpa_driver_nl80211_data *drv) { struct wpa_scan_results *res; size_t i; res = nl80211_get_scan_results(drv); if (res == NULL) { wpa_printf(MSG_DEBUG, "nl80211: Failed to get scan results"); return; } wpa_printf(MSG_DEBUG, "nl80211: Scan result dump"); for (i = 0; i < res->num; i++) { struct wpa_scan_res *r = res->res[i]; wpa_printf(MSG_DEBUG, "nl80211: %d/%d " MACSTR "%s%s", (int) i, (int) res->num, MAC2STR(r->bssid), r->flags & WPA_SCAN_AUTHENTICATED ? " [auth]" : "", r->flags & WPA_SCAN_ASSOCIATED ? " [assoc]" : ""); } wpa_scan_results_free(res); } static int wpa_driver_nl80211_set_key(const char *ifname, void *priv, enum wpa_alg alg, const u8 *addr, int key_idx, int set_tx, const u8 *seq, size_t seq_len, const u8 *key, size_t key_len) { struct i802_bss *bss = priv; struct wpa_driver_nl80211_data *drv = bss->drv; int ifindex = if_nametoindex(ifname); struct nl_msg *msg; int ret; wpa_printf(MSG_DEBUG, "%s: ifindex=%d alg=%d addr=%p key_idx=%d " "set_tx=%d seq_len=%lu key_len=%lu", __func__, ifindex, alg, addr, key_idx, set_tx, (unsigned long) seq_len, (unsigned long) key_len); #ifdef CONFIG_TDLS if (key_idx == -1) key_idx = 0; #endif /* CONFIG_TDLS */ msg = nlmsg_alloc(); if (!msg) return -ENOMEM; if (alg == WPA_ALG_NONE) { nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_KEY); } else { nl80211_cmd(drv, msg, 0, NL80211_CMD_NEW_KEY); NLA_PUT(msg, NL80211_ATTR_KEY_DATA, key_len, key); switch (alg) { case WPA_ALG_WEP: if (key_len == 5) NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, WLAN_CIPHER_SUITE_WEP40); else NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, WLAN_CIPHER_SUITE_WEP104); break; case WPA_ALG_TKIP: NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, WLAN_CIPHER_SUITE_TKIP); break; case WPA_ALG_CCMP: NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, WLAN_CIPHER_SUITE_CCMP); break; case WPA_ALG_GCMP: NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, WLAN_CIPHER_SUITE_GCMP); break; case WPA_ALG_IGTK: NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, WLAN_CIPHER_SUITE_AES_CMAC); break; default: wpa_printf(MSG_ERROR, "%s: Unsupported encryption " "algorithm %d", __func__, alg); nlmsg_free(msg); return -1; } } if (seq && seq_len) NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, seq_len, seq); if (addr && !is_broadcast_ether_addr(addr)) { wpa_printf(MSG_DEBUG, " addr=" MACSTR, MAC2STR(addr)); NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); if (alg != WPA_ALG_WEP && key_idx && !set_tx) { wpa_printf(MSG_DEBUG, " RSN IBSS RX GTK"); NLA_PUT_U32(msg, NL80211_ATTR_KEY_TYPE, NL80211_KEYTYPE_GROUP); } } else if (addr && is_broadcast_ether_addr(addr)) { struct nl_msg *types; int err; wpa_printf(MSG_DEBUG, " broadcast key"); types = nlmsg_alloc(); if (!types) goto nla_put_failure; NLA_PUT_FLAG(types, NL80211_KEY_DEFAULT_TYPE_MULTICAST); err = nla_put_nested(msg, NL80211_ATTR_KEY_DEFAULT_TYPES, types); nlmsg_free(types); if (err) goto nla_put_failure; } NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx); NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex); ret = send_and_recv_msgs(drv, msg, NULL, NULL); if ((ret == -ENOENT || ret == -ENOLINK) && alg == WPA_ALG_NONE) ret = 0; if (ret) wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d %s)", ret, strerror(-ret)); /* * If we failed or don't need to set the default TX key (below), * we're done here. */ if (ret || !set_tx || alg == WPA_ALG_NONE) return ret; if (is_ap_interface(drv->nlmode) && addr && !is_broadcast_ether_addr(addr)) return ret; msg = nlmsg_alloc(); if (!msg) return -ENOMEM; nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_KEY); NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx); NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex); if (alg == WPA_ALG_IGTK) NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT_MGMT); else NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT); if (addr && is_broadcast_ether_addr(addr)) { struct nl_msg *types; int err; types = nlmsg_alloc(); if (!types) goto nla_put_failure; NLA_PUT_FLAG(types, NL80211_KEY_DEFAULT_TYPE_MULTICAST); err = nla_put_nested(msg, NL80211_ATTR_KEY_DEFAULT_TYPES, types); nlmsg_free(types); if (err) goto nla_put_failure; } else if (addr) { struct nl_msg *types; int err; types = nlmsg_alloc(); if (!types) goto nla_put_failure; NLA_PUT_FLAG(types, NL80211_KEY_DEFAULT_TYPE_UNICAST); err = nla_put_nested(msg, NL80211_ATTR_KEY_DEFAULT_TYPES, types); nlmsg_free(types); if (err) goto nla_put_failure; } ret = send_and_recv_msgs(drv, msg, NULL, NULL); if (ret == -ENOENT) ret = 0; if (ret) wpa_printf(MSG_DEBUG, "nl80211: set_key default failed; " "err=%d %s)", ret, strerror(-ret)); return ret; nla_put_failure: nlmsg_free(msg); return -ENOBUFS; } static int nl_add_key(struct nl_msg *msg, enum wpa_alg alg, int key_idx, int defkey, const u8 *seq, size_t seq_len, const u8 *key, size_t key_len) { struct nlattr *key_attr = nla_nest_start(msg, NL80211_ATTR_KEY); if (!key_attr) return -1; if (defkey && alg == WPA_ALG_IGTK) NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_MGMT); else if (defkey) NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT); NLA_PUT_U8(msg, NL80211_KEY_IDX, key_idx); switch (alg) { case WPA_ALG_WEP: if (key_len == 5) NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_WEP40); else NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_WEP104); break; case WPA_ALG_TKIP: NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_TKIP); break; case WPA_ALG_CCMP: NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_CCMP); break; case WPA_ALG_GCMP: NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_GCMP); break; case WPA_ALG_IGTK: NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_AES_CMAC); break; default: wpa_printf(MSG_ERROR, "%s: Unsupported encryption " "algorithm %d", __func__, alg); return -1; } if (seq && seq_len) NLA_PUT(msg, NL80211_KEY_SEQ, seq_len, seq); NLA_PUT(msg, NL80211_KEY_DATA, key_len, key); nla_nest_end(msg, key_attr); return 0; nla_put_failure: return -1; } static int nl80211_set_conn_keys(struct wpa_driver_associate_params *params, struct nl_msg *msg) { int i, privacy = 0; struct nlattr *nl_keys, *nl_key; for (i = 0; i < 4; i++) { if (!params->wep_key[i]) continue; privacy = 1; break; } if (params->wps == WPS_MODE_PRIVACY) privacy = 1; if (params->pairwise_suite && params->pairwise_suite != WPA_CIPHER_NONE) privacy = 1; if (!privacy) return 0; NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY); nl_keys = nla_nest_start(msg, NL80211_ATTR_KEYS); if (!nl_keys) goto nla_put_failure; for (i = 0; i < 4; i++) { if (!params->wep_key[i]) continue; nl_key = nla_nest_start(msg, i); if (!nl_key) goto nla_put_failure; NLA_PUT(msg, NL80211_KEY_DATA, params->wep_key_len[i], params->wep_key[i]); if (params->wep_key_len[i] == 5) NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_WEP40); else NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_WEP104); NLA_PUT_U8(msg, NL80211_KEY_IDX, i); if (i == params->wep_tx_keyidx) NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT); nla_nest_end(msg, nl_key); } nla_nest_end(msg, nl_keys); return 0; nla_put_failure: return -ENOBUFS; } static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv, const u8 *addr, int cmd, u16 reason_code, int local_state_change) { int ret = -1; struct nl_msg *msg; msg = nlmsg_alloc(); if (!msg) return -1; nl80211_cmd(drv, msg, 0, cmd); NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason_code); NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); if (local_state_change) NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE); ret = send_and_recv_msgs(drv, msg, NULL, NULL); msg = NULL; if (ret) { wpa_dbg(drv->ctx, MSG_DEBUG, "nl80211: MLME command failed: reason=%u ret=%d (%s)", reason_code, ret, strerror(-ret)); goto nla_put_failure; } ret = 0; nla_put_failure: nlmsg_free(msg); return ret; } static int wpa_driver_nl80211_disconnect(struct wpa_driver_nl80211_data *drv, const u8 *addr, int reason_code) { wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)", __func__, MAC2STR(addr), reason_code); drv->associated = 0; return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISCONNECT, reason_code, 0); } static int wpa_driver_nl80211_deauthenticate(void *priv, const u8 *addr, int reason_code) { struct i802_bss *bss = priv; struct wpa_driver_nl80211_data *drv = bss->drv; if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) return wpa_driver_nl80211_disconnect(drv, addr, reason_code); wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)", __func__, MAC2STR(addr), reason_code); drv->associated = 0; if (drv->nlmode == NL80211_IFTYPE_ADHOC) return nl80211_leave_ibss(drv); return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE, reason_code, 0); } static int wpa_driver_nl80211_disassociate(void *priv, const u8 *addr, int reason_code) { struct i802_bss *bss = priv; struct wpa_driver_nl80211_data *drv = bss->drv; if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) return wpa_driver_nl80211_disconnect(drv, addr, reason_code); wpa_printf(MSG_DEBUG, "%s", __func__); drv->associated = 0; return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISASSOCIATE, reason_code, 0); } static void nl80211_copy_auth_params(struct wpa_driver_nl80211_data *drv, struct wpa_driver_auth_params *params) { int i; drv->auth_freq = params->freq; drv->auth_alg = params->auth_alg; drv->auth_wep_tx_keyidx = params->wep_tx_keyidx; drv->auth_local_state_change = params->local_state_change; drv->auth_p2p = params->p2p; if (params->bssid) os_memcpy(drv->auth_bssid_, params->bssid, ETH_ALEN); else os_memset(drv->auth_bssid_, 0, ETH_ALEN); if (params->ssid) { os_memcpy(drv->auth_ssid, params->ssid, params->ssid_len); drv->auth_ssid_len = params->ssid_len; } else drv->auth_ssid_len = 0; os_free(drv->auth_ie); drv->auth_ie = NULL; drv->auth_ie_len = 0; if (params->ie) { drv->auth_ie = os_malloc(params->ie_len); if (drv->auth_ie) { os_memcpy(drv->auth_ie, params->ie, params->ie_len); drv->auth_ie_len = params->ie_len; } } for (i = 0; i < 4; i++) { if (params->wep_key[i] && params->wep_key_len[i] && params->wep_key_len[i] <= 16) { os_memcpy(drv->auth_wep_key[i], params->wep_key[i], params->wep_key_len[i]); drv->auth_wep_key_len[i] = params->wep_key_len[i]; } else drv->auth_wep_key_len[i] = 0; } } static int wpa_driver_nl80211_authenticate( void *priv, struct wpa_driver_auth_params *params) { struct i802_bss *bss = priv; struct wpa_driver_nl80211_data *drv = bss->drv; int ret = -1, i; struct nl_msg *msg; enum nl80211_auth_type type; enum nl80211_iftype nlmode; int count = 0; int is_retry; is_retry = drv->retry_auth; drv->retry_auth = 0; drv->associated = 0; os_memset(drv->auth_bssid, 0, ETH_ALEN); /* FIX: IBSS mode */ nlmode = params->p2p ? NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION; if (drv->nlmode != nlmode && wpa_driver_nl80211_set_mode(priv, nlmode) < 0) return -1; retry: msg = nlmsg_alloc(); if (!msg) return -1; wpa_printf(MSG_DEBUG, "nl80211: Authenticate (ifindex=%d)", drv->ifindex); nl80211_cmd(drv, msg, 0, NL80211_CMD_AUTHENTICATE); for (i = 0; i < 4; i++) { if (!params->wep_key[i]) continue; wpa_driver_nl80211_set_key(bss->ifname, priv, WPA_ALG_WEP, NULL, i, i == params->wep_tx_keyidx, NULL, 0, params->wep_key[i], params->wep_key_len[i]); if (params->wep_tx_keyidx != i) continue; if (nl_add_key(msg, WPA_ALG_WEP, i, 1, NULL, 0, params->wep_key[i], params->wep_key_len[i])) { nlmsg_free(msg); return -1; } } NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); if (params->bssid) { wpa_printf(MSG_DEBUG, " * bssid=" MACSTR, MAC2STR(params->bssid)); NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid); } if (params->freq) { wpa_printf(MSG_DEBUG, " * freq=%d", params->freq); NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq); } if (params->ssid) { wpa_hexdump_ascii(MSG_DEBUG, " * SSID", params->ssid, params->ssid_len); NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len, params->ssid); } wpa_hexdump(MSG_DEBUG, " * IEs", params->ie, params->ie_len); if (params->ie) NLA_PUT(msg, NL80211_ATTR_IE, params->ie_len, params->ie); if (params->auth_alg & WPA_AUTH_ALG_OPEN) type = NL80211_AUTHTYPE_OPEN_SYSTEM; else if (params->auth_alg & WPA_AUTH_ALG_SHARED) type = NL80211_AUTHTYPE_SHARED_KEY; else if (params->auth_alg & WPA_AUTH_ALG_LEAP) type = NL80211_AUTHTYPE_NETWORK_EAP; else if (params->auth_alg & WPA_AUTH_ALG_FT) type = NL80211_AUTHTYPE_FT; else goto nla_put_failure; wpa_printf(MSG_DEBUG, " * Auth Type %d", type); NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type); if (params->local_state_change) { wpa_printf(MSG_DEBUG, " * Local state change only"); NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE); } ret = send_and_recv_msgs(drv, msg, NULL, NULL); msg = NULL; if (ret) { wpa_dbg(drv->ctx, MSG_DEBUG, "nl80211: MLME command failed (auth): ret=%d (%s)", ret, strerror(-ret)); count++; if (ret == -EALREADY && count == 1 && params->bssid && !params->local_state_change) { /* * mac80211 does not currently accept new * authentication if we are already authenticated. As a * workaround, force deauthentication and try again. */ wpa_printf(MSG_DEBUG, "nl80211: Retry authentication " "after forced deauthentication"); wpa_driver_nl80211_deauthenticate( bss, params->bssid, WLAN_REASON_PREV_AUTH_NOT_VALID); nlmsg_free(msg); goto retry; } if (ret == -ENOENT && params->freq && !is_retry) { /* * cfg80211 has likely expired the BSS entry even * though it was previously available in our internal * BSS table. To recover quickly, start a single * channel scan on the specified channel. */ struct wpa_driver_scan_params scan; int freqs[2]; os_memset(&scan, 0, sizeof(scan)); scan.num_ssids = 1; if (params->ssid) { scan.ssids[0].ssid = params->ssid; scan.ssids[0].ssid_len = params->ssid_len; } freqs[0] = params->freq; freqs[1] = 0; scan.freqs = freqs; wpa_printf(MSG_DEBUG, "nl80211: Trigger single " "channel scan to refresh cfg80211 BSS " "entry"); ret = wpa_driver_nl80211_scan(bss, &scan); if (ret == 0) { nl80211_copy_auth_params(drv, params); drv->scan_for_auth = 1; } } else if (is_retry) { /* * Need to indicate this with an event since the return * value from the retry is not delivered to core code. */ union wpa_event_data event; wpa_printf(MSG_DEBUG, "nl80211: Authentication retry " "failed"); os_memset(&event, 0, sizeof(event)); os_memcpy(event.timeout_event.addr, drv->auth_bssid_, ETH_ALEN); wpa_supplicant_event(drv->ctx, EVENT_AUTH_TIMED_OUT, &event); } goto nla_put_failure; } ret = 0; wpa_printf(MSG_DEBUG, "nl80211: Authentication request send " "successfully"); nla_put_failure: nlmsg_free(msg); return ret; } static int wpa_driver_nl80211_authenticate_retry( struct wpa_driver_nl80211_data *drv) { struct wpa_driver_auth_params params; struct i802_bss *bss = &drv->first_bss; int i; wpa_printf(MSG_DEBUG, "nl80211: Try to authenticate again"); os_memset(¶ms, 0, sizeof(params)); params.freq = drv->auth_freq; params.auth_alg = drv->auth_alg; params.wep_tx_keyidx = drv->auth_wep_tx_keyidx; params.local_state_change = drv->auth_local_state_change; params.p2p = drv->auth_p2p; if (!is_zero_ether_addr(drv->auth_bssid_)) params.bssid = drv->auth_bssid_; if (drv->auth_ssid_len) { params.ssid = drv->auth_ssid; params.ssid_len = drv->auth_ssid_len; } params.ie = drv->auth_ie; params.ie_len = drv->auth_ie_len; for (i = 0; i < 4; i++) { if (drv->auth_wep_key_len[i]) { params.wep_key[i] = drv->auth_wep_key[i]; params.wep_key_len[i] = drv->auth_wep_key_len[i]; } } drv->retry_auth = 1; return wpa_driver_nl80211_authenticate(bss, ¶ms); } struct phy_info_arg { u16 *num_modes; struct hostapd_hw_modes *modes; }; static int phy_info_handler(struct nl_msg *msg, void *arg) { struct nlattr *tb_msg[NL80211_ATTR_MAX + 1]; struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); struct phy_info_arg *phy_info = arg; struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1]; struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1]; static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = { [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 }, [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG }, [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG }, [NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG }, [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG }, [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 }, }; struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1]; static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = { [NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 }, [NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] = { .type = NLA_FLAG }, }; struct nlattr *nl_band; struct nlattr *nl_freq; struct nlattr *nl_rate; int rem_band, rem_freq, rem_rate; struct hostapd_hw_modes *mode; int idx, mode_is_set; nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), genlmsg_attrlen(gnlh, 0), NULL); if (!tb_msg[NL80211_ATTR_WIPHY_BANDS]) return NL_SKIP; nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band) { mode = os_realloc_array(phy_info->modes, *phy_info->num_modes + 1, sizeof(*mode)); if (!mode) return NL_SKIP; phy_info->modes = mode; mode_is_set = 0; mode = &phy_info->modes[*(phy_info->num_modes)]; memset(mode, 0, sizeof(*mode)); mode->flags = HOSTAPD_MODE_FLAG_HT_INFO_KNOWN; *(phy_info->num_modes) += 1; nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band), nla_len(nl_band), NULL); if (tb_band[NL80211_BAND_ATTR_HT_CAPA]) { mode->ht_capab = nla_get_u16( tb_band[NL80211_BAND_ATTR_HT_CAPA]); } if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) { mode->a_mpdu_params |= nla_get_u8( tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) & 0x03; } if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) { mode->a_mpdu_params |= nla_get_u8( tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) << 2; } if (tb_band[NL80211_BAND_ATTR_HT_MCS_SET] && nla_len(tb_band[NL80211_BAND_ATTR_HT_MCS_SET])) { u8 *mcs; mcs = nla_data(tb_band[NL80211_BAND_ATTR_HT_MCS_SET]); os_memcpy(mode->mcs_set, mcs, 16); } if (tb_band[NL80211_BAND_ATTR_VHT_CAPA]) { mode->vht_capab = nla_get_u32( tb_band[NL80211_BAND_ATTR_VHT_CAPA]); } if (tb_band[NL80211_BAND_ATTR_VHT_MCS_SET] && nla_len(tb_band[NL80211_BAND_ATTR_VHT_MCS_SET])) { u8 *mcs; mcs = nla_data(tb_band[NL80211_BAND_ATTR_VHT_MCS_SET]); os_memcpy(mode->vht_mcs_set, mcs, 8); } nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) { nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq), nla_len(nl_freq), freq_policy); if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ]) continue; mode->num_channels++; } mode->channels = os_calloc(mode->num_channels, sizeof(struct hostapd_channel_data)); if (!mode->channels) return NL_SKIP; idx = 0; nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) { nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq), nla_len(nl_freq), freq_policy); if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ]) continue; mode->channels[idx].freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]); mode->channels[idx].flag = 0; if (!mode_is_set) { /* crude heuristic */ if (mode->channels[idx].freq < 4000) mode->mode = HOSTAPD_MODE_IEEE80211B; else mode->mode = HOSTAPD_MODE_IEEE80211A; mode_is_set = 1; } /* crude heuristic */ if (mode->channels[idx].freq < 4000) if (mode->channels[idx].freq == 2484) mode->channels[idx].chan = 14; else mode->channels[idx].chan = (mode->channels[idx].freq - 2407) / 5; else mode->channels[idx].chan = mode->channels[idx].freq/5 - 1000; if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED]) mode->channels[idx].flag |= HOSTAPD_CHAN_DISABLED; if (tb_freq[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN]) mode->channels[idx].flag |= HOSTAPD_CHAN_PASSIVE_SCAN; if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IBSS]) mode->channels[idx].flag |= HOSTAPD_CHAN_NO_IBSS; if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR]) mode->channels[idx].flag |= HOSTAPD_CHAN_RADAR; if (tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER] && !tb_freq[NL80211_FREQUENCY_ATTR_DISABLED]) mode->channels[idx].max_tx_power = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER]) / 100; idx++; } nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) { nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate), nla_len(nl_rate), rate_policy); if (!tb_rate[NL80211_BITRATE_ATTR_RATE]) continue; mode->num_rates++; } mode->rates = os_calloc(mode->num_rates, sizeof(int)); if (!mode->rates) return NL_SKIP; idx = 0; nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) { nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate), nla_len(nl_rate), rate_policy); if (!tb_rate[NL80211_BITRATE_ATTR_RATE]) continue; mode->rates[idx] = nla_get_u32(tb_rate[NL80211_BITRATE_ATTR_RATE]); /* crude heuristic */ if (mode->mode == HOSTAPD_MODE_IEEE80211B && mode->rates[idx] > 200) mode->mode = HOSTAPD_MODE_IEEE80211G; idx++; } } return NL_SKIP; } static struct hostapd_hw_modes * wpa_driver_nl80211_add_11b(struct hostapd_hw_modes *modes, u16 *num_modes) { u16 m; struct hostapd_hw_modes *mode11g = NULL, *nmodes, *mode; int i, mode11g_idx = -1; /* If only 802.11g mode is included, use it to construct matching * 802.11b mode data. */ for (m = 0; m < *num_modes; m++) { if (modes[m].mode == HOSTAPD_MODE_IEEE80211B) return modes; /* 802.11b already included */ if (modes[m].mode == HOSTAPD_MODE_IEEE80211G) mode11g_idx = m; } if (mode11g_idx < 0) return modes; /* 2.4 GHz band not supported at all */ nmodes = os_realloc_array(modes, *num_modes + 1, sizeof(*nmodes)); if (nmodes == NULL) return modes; /* Could not add 802.11b mode */ mode = &nmodes[*num_modes]; os_memset(mode, 0, sizeof(*mode)); (*num_modes)++; modes = nmodes; mode->mode = HOSTAPD_MODE_IEEE80211B; mode11g = &modes[mode11g_idx]; mode->num_channels = mode11g->num_channels; mode->channels = os_malloc(mode11g->num_channels * sizeof(struct hostapd_channel_data)); if (mode->channels == NULL) { (*num_modes)--; return modes; /* Could not add 802.11b mode */ } os_memcpy(mode->channels, mode11g->channels, mode11g->num_channels * sizeof(struct hostapd_channel_data)); mode->num_rates = 0; mode->rates = os_malloc(4 * sizeof(int)); if (mode->rates == NULL) { os_free(mode->channels); (*num_modes)--; return modes; /* Could not add 802.11b mode */ } for (i = 0; i < mode11g->num_rates; i++) { if (mode11g->rates[i] != 10 && mode11g->rates[i] != 20 && mode11g->rates[i] != 55 && mode11g->rates[i] != 110) continue; mode->rates[mode->num_rates] = mode11g->rates[i]; mode->num_rates++; if (mode->num_rates == 4) break; } if (mode->num_rates == 0) { os_free(mode->channels); os_free(mode->rates); (*num_modes)--; return modes; /* No 802.11b rates */ } wpa_printf(MSG_DEBUG, "nl80211: Added 802.11b mode based on 802.11g " "information"); return modes; } static void nl80211_set_ht40_mode(struct hostapd_hw_modes *mode, int start, int end) { int c; for (c = 0; c < mode->num_channels; c++) { struct hostapd_channel_data *chan = &mode->channels[c]; if (chan->freq - 10 >= start && chan->freq + 10 <= end) chan->flag |= HOSTAPD_CHAN_HT40; } } static void nl80211_set_ht40_mode_sec(struct hostapd_hw_modes *mode, int start, int end) { int c; for (c = 0; c < mode->num_channels; c++) { struct hostapd_channel_data *chan = &mode->channels[c]; if (!(chan->flag & HOSTAPD_CHAN_HT40)) continue; if (chan->freq - 30 >= start && chan->freq - 10 <= end) chan->flag |= HOSTAPD_CHAN_HT40MINUS; if (chan->freq + 10 >= start && chan->freq + 30 <= end) chan->flag |= HOSTAPD_CHAN_HT40PLUS; } } static void nl80211_reg_rule_ht40(struct nlattr *tb[], struct phy_info_arg *results) { u32 start, end, max_bw; u16 m; if (tb[NL80211_ATTR_FREQ_RANGE_START] == NULL || tb[NL80211_ATTR_FREQ_RANGE_END] == NULL || tb[NL80211_ATTR_FREQ_RANGE_MAX_BW] == NULL) return; start = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]) / 1000; end = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]) / 1000; max_bw = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000; wpa_printf(MSG_DEBUG, "nl80211: %u-%u @ %u MHz", start, end, max_bw); if (max_bw < 40) return; for (m = 0; m < *results->num_modes; m++) { if (!(results->modes[m].ht_capab & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET)) continue; nl80211_set_ht40_mode(&results->modes[m], start, end); } } static void nl80211_reg_rule_sec(struct nlattr *tb[], struct phy_info_arg *results) { u32 start, end, max_bw; u16 m; if (tb[NL80211_ATTR_FREQ_RANGE_START] == NULL || tb[NL80211_ATTR_FREQ_RANGE_END] == NULL || tb[NL80211_ATTR_FREQ_RANGE_MAX_BW] == NULL) return; start = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]) / 1000; end = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]) / 1000; max_bw = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000; if (max_bw < 20) return; for (m = 0; m < *results->num_modes; m++) { if (!(results->modes[m].ht_capab & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET)) continue; nl80211_set_ht40_mode_sec(&results->modes[m], start, end); } } static int nl80211_get_reg(struct nl_msg *msg, void *arg) { struct phy_info_arg *results = arg; struct nlattr *tb_msg[NL80211_ATTR_MAX + 1]; struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); struct nlattr *nl_rule; struct nlattr *tb_rule[NL80211_FREQUENCY_ATTR_MAX + 1]; int rem_rule; static struct nla_policy reg_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = { [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 }, [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 }, [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 }, [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 }, [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 }, [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 }, }; nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), genlmsg_attrlen(gnlh, 0), NULL); if (!tb_msg[NL80211_ATTR_REG_ALPHA2] || !tb_msg[NL80211_ATTR_REG_RULES]) { wpa_printf(MSG_DEBUG, "nl80211: No regulatory information " "available"); return NL_SKIP; } wpa_printf(MSG_DEBUG, "nl80211: Regulatory information - country=%s", (char *) nla_data(tb_msg[NL80211_ATTR_REG_ALPHA2])); nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule) { nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_rule), nla_len(nl_rule), reg_policy); nl80211_reg_rule_ht40(tb_rule, results); } nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule) { nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_rule), nla_len(nl_rule), reg_policy); nl80211_reg_rule_sec(tb_rule, results); } return NL_SKIP; } static int nl80211_set_ht40_flags(struct wpa_driver_nl80211_data *drv, struct phy_info_arg *results) { struct nl_msg *msg; msg = nlmsg_alloc(); if (!msg) return -ENOMEM; nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_REG); return send_and_recv_msgs(drv, msg, nl80211_get_reg, results); } static struct hostapd_hw_modes * wpa_driver_nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags) { struct i802_bss *bss = priv; struct wpa_driver_nl80211_data *drv = bss->drv; struct nl_msg *msg; struct phy_info_arg result = { .num_modes = num_modes, .modes = NULL, }; *num_modes = 0; *flags = 0; msg = nlmsg_alloc(); if (!msg) return NULL; nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_WIPHY); NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); if (send_and_recv_msgs(drv, msg, phy_info_handler, &result) == 0) { nl80211_set_ht40_flags(drv, &result); return wpa_driver_nl80211_add_11b(result.modes, num_modes); } msg = NULL; nla_put_failure: nlmsg_free(msg); return NULL; } static int wpa_driver_nl80211_send_mntr(struct wpa_driver_nl80211_data *drv, const void *data, size_t len, int encrypt, int noack) { __u8 rtap_hdr[] = { 0x00, 0x00, /* radiotap version */ 0x0e, 0x00, /* radiotap length */ 0x02, 0xc0, 0x00, 0x00, /* bmap: flags, tx and rx flags */ IEEE80211_RADIOTAP_F_FRAG, /* F_FRAG (fragment if required) */ 0x00, /* padding */ 0x00, 0x00, /* RX and TX flags to indicate that */ 0x00, 0x00, /* this is the injected frame directly */ }; struct iovec iov[2] = { { .iov_base = &rtap_hdr, .iov_len = sizeof(rtap_hdr), }, { .iov_base = (void *) data, .iov_len = len, } }; struct msghdr msg = { .msg_name = NULL, .msg_namelen = 0, .msg_iov = iov, .msg_iovlen = 2, .msg_control = NULL, .msg_controllen = 0, .msg_flags = 0, }; int res; u16 txflags = 0; if (encrypt) rtap_hdr[8] |= IEEE80211_RADIOTAP_F_WEP; if (drv->monitor_sock < 0) { wpa_printf(MSG_DEBUG, "nl80211: No monitor socket available " "for %s", __func__); return -1; } if (noack) txflags |= IEEE80211_RADIOTAP_F_TX_NOACK; *(le16 *) &rtap_hdr[12] = host_to_le16(txflags); res = sendmsg(drv->monitor_sock, &msg, 0); if (res < 0) { wpa_printf(MSG_INFO, "nl80211: sendmsg: %s", strerror(errno)); return -1; } return 0; } static int wpa_driver_nl80211_send_frame(struct i802_bss *bss, const void *data, size_t len, int encrypt, int noack, unsigned int freq, int no_cck, int offchanok, unsigned int wait_time) { struct wpa_driver_nl80211_data *drv = bss->drv; u64 cookie; if (freq == 0) freq = bss->freq; if (drv->use_monitor) return wpa_driver_nl80211_send_mntr(drv, data, len, encrypt, noack); return nl80211_send_frame_cmd(bss, freq, wait_time, data, len, &cookie, no_cck, noack, offchanok); } static int wpa_driver_nl80211_send_mlme_freq(struct i802_bss *bss, const u8 *data, size_t data_len, int noack, unsigned int freq, int no_cck, int offchanok, unsigned int wait_time) { struct wpa_driver_nl80211_data *drv = bss->drv; struct ieee80211_mgmt *mgmt; int encrypt = 1; u16 fc; mgmt = (struct ieee80211_mgmt *) data; fc = le_to_host16(mgmt->frame_control); if (is_sta_interface(drv->nlmode) && WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT && WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_PROBE_RESP) { /* * The use of last_mgmt_freq is a bit of a hack, * but it works due to the single-threaded nature * of wpa_supplicant. */ if (freq == 0) freq = drv->last_mgmt_freq; return nl80211_send_frame_cmd(bss, freq, 0, data, data_len, NULL, 1, noack, 1); } #if defined (LEGACY_STA_EVENTS) if (freq == 0) freq = bss->freq; if ( is_ap_interface(drv->nlmode)) { return nl80211_send_frame_cmd(bss, freq, 0, data, data_len, &drv->send_action_cookie, 0, noack, 1); } #else if (drv->device_ap_sme && is_ap_interface(drv->nlmode)) { if (freq == 0) freq = bss->freq; return nl80211_send_frame_cmd(bss, freq, (int) freq == bss->freq ? 0 : wait_time, data, data_len, &drv->send_action_cookie, no_cck, noack, offchanok); } #endif if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT && WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) { /* * Only one of the authentication frame types is encrypted. * In order for static WEP encryption to work properly (i.e., * to not encrypt the frame), we need to tell mac80211 about * the frames that must not be encrypted. */ u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg); u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction); if (auth_alg != WLAN_AUTH_SHARED_KEY || auth_trans != 3) encrypt = 0; } return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt, noack, freq, no_cck, offchanok, wait_time); } static int wpa_driver_nl80211_send_mlme(void *priv, const u8 *data, size_t data_len, int noack) { struct i802_bss *bss = priv; return wpa_driver_nl80211_send_mlme_freq(bss, data, data_len, noack, 0, 0, 0, 0); } static int nl80211_set_bss(struct i802_bss *bss, int cts, int preamble, int slot, int ht_opmode, int ap_isolate, int *basic_rates) { struct wpa_driver_nl80211_data *drv = bss->drv; struct nl_msg *msg; msg = nlmsg_alloc(); if (!msg) return -ENOMEM; nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_BSS); if (cts >= 0) NLA_PUT_U8(msg, NL80211_ATTR_BSS_CTS_PROT, cts); if (preamble >= 0) NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble); if (slot >= 0) NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot); if (ht_opmode >= 0) NLA_PUT_U16(msg, NL80211_ATTR_BSS_HT_OPMODE, ht_opmode); if (ap_isolate >= 0) NLA_PUT_U8(msg, NL80211_ATTR_AP_ISOLATE, ap_isolate); if (basic_rates) { u8 rates[NL80211_MAX_SUPP_RATES]; u8 rates_len = 0; int i; for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0; i++) rates[rates_len++] = basic_rates[i] / 5; NLA_PUT(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates); } NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)); return send_and_recv_msgs(drv, msg, NULL, NULL); nla_put_failure: nlmsg_free(msg); return -ENOBUFS; } static int wpa_driver_nl80211_set_ap(void *priv, struct wpa_driver_ap_params *params) { struct i802_bss *bss = priv; struct wpa_driver_nl80211_data *drv = bss->drv; struct nl_msg *msg; u8 cmd = NL80211_CMD_NEW_BEACON; int ret; int beacon_set; int ifindex = if_nametoindex(bss->ifname); int num_suites; u32 suites[10]; u32 ver; beacon_set = bss->beacon_set; msg = nlmsg_alloc(); if (!msg) return -ENOMEM; wpa_printf(MSG_DEBUG, "nl80211: Set beacon (beacon_set=%d)", beacon_set); if (beacon_set) cmd = NL80211_CMD_SET_BEACON; nl80211_cmd(drv, msg, 0, cmd); NLA_PUT(msg, NL80211_ATTR_BEACON_HEAD, params->head_len, params->head); NLA_PUT(msg, NL80211_ATTR_BEACON_TAIL, params->tail_len, params->tail); NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex); NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, params->beacon_int); NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, params->dtim_period); NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len, params->ssid); if (params->proberesp && params->proberesp_len) NLA_PUT(msg, NL80211_ATTR_PROBE_RESP, params->proberesp_len, params->proberesp); switch (params->hide_ssid) { case NO_SSID_HIDING: NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID, NL80211_HIDDEN_SSID_NOT_IN_USE); break; case HIDDEN_SSID_ZERO_LEN: NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID, NL80211_HIDDEN_SSID_ZERO_LEN); break; case HIDDEN_SSID_ZERO_CONTENTS: NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID, NL80211_HIDDEN_SSID_ZERO_CONTENTS); break; } if (params->privacy) NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY); if ((params->auth_algs & (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) == (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) { /* Leave out the attribute */ } else if (params->auth_algs & WPA_AUTH_ALG_SHARED) NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, NL80211_AUTHTYPE_SHARED_KEY); else NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, NL80211_AUTHTYPE_OPEN_SYSTEM); ver = 0; if (params->wpa_version & WPA_PROTO_WPA) ver |= NL80211_WPA_VERSION_1; if (params->wpa_version & WPA_PROTO_RSN) ver |= NL80211_WPA_VERSION_2; if (ver) NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver); num_suites = 0; if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X) suites[num_suites++] = WLAN_AKM_SUITE_8021X; if (params->key_mgmt_suites & WPA_KEY_MGMT_PSK) suites[num_suites++] = WLAN_AKM_SUITE_PSK; if (num_suites) { NLA_PUT(msg, NL80211_ATTR_AKM_SUITES, num_suites * sizeof(u32), suites); } if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X && params->pairwise_ciphers & (WPA_CIPHER_WEP104 | WPA_CIPHER_WEP40)) NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT); num_suites = 0; if (params->pairwise_ciphers & WPA_CIPHER_CCMP) suites[num_suites++] = WLAN_CIPHER_SUITE_CCMP; if (params->pairwise_ciphers & WPA_CIPHER_GCMP) suites[num_suites++] = WLAN_CIPHER_SUITE_GCMP; if (params->pairwise_ciphers & WPA_CIPHER_TKIP) suites[num_suites++] = WLAN_CIPHER_SUITE_TKIP; if (params->pairwise_ciphers & WPA_CIPHER_WEP104) suites[num_suites++] = WLAN_CIPHER_SUITE_WEP104; if (params->pairwise_ciphers & WPA_CIPHER_WEP40) suites[num_suites++] = WLAN_CIPHER_SUITE_WEP40; if (num_suites) { NLA_PUT(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, num_suites * sizeof(u32), suites); } switch (params->group_cipher) { case WPA_CIPHER_CCMP: NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, WLAN_CIPHER_SUITE_CCMP); break; case WPA_CIPHER_GCMP: NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, WLAN_CIPHER_SUITE_GCMP); break; case WPA_CIPHER_TKIP: NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, WLAN_CIPHER_SUITE_TKIP); break; case WPA_CIPHER_WEP104: NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, WLAN_CIPHER_SUITE_WEP104); break; case WPA_CIPHER_WEP40: NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, WLAN_CIPHER_SUITE_WEP40); break; } if (params->beacon_ies) { NLA_PUT(msg, NL80211_ATTR_IE, wpabuf_len(params->beacon_ies), wpabuf_head(params->beacon_ies)); } if (params->proberesp_ies) { NLA_PUT(msg, NL80211_ATTR_IE_PROBE_RESP, wpabuf_len(params->proberesp_ies), wpabuf_head(params->proberesp_ies)); } if (params->assocresp_ies) { NLA_PUT(msg, NL80211_ATTR_IE_ASSOC_RESP, wpabuf_len(params->assocresp_ies), wpabuf_head(params->assocresp_ies)); } if (drv->capa.flags & WPA_DRIVER_FLAGS_INACTIVITY_TIMER) { NLA_PUT_U16(msg, NL80211_ATTR_INACTIVITY_TIMEOUT, params->ap_max_inactivity); } ret = send_and_recv_msgs(drv, msg, NULL, NULL); if (ret) { wpa_printf(MSG_DEBUG, "nl80211: Beacon set failed: %d (%s)", ret, strerror(-ret)); } else { bss->beacon_set = 1; nl80211_set_bss(bss, params->cts_protect, params->preamble, params->short_slot_time, params->ht_opmode, params->isolate, params->basic_rates); } #if defined(HOSTAPD) && defined(LEGACY_STA_EVENTS) wpa_driver_nl80211_probe_req_report(priv, 1); #endif return ret; nla_put_failure: nlmsg_free(msg); return -ENOBUFS; } static int wpa_driver_nl80211_set_freq(struct i802_bss *bss, int freq, int ht_enabled, int sec_channel_offset) { struct wpa_driver_nl80211_data *drv = bss->drv; struct nl_msg *msg; int ret; wpa_printf(MSG_DEBUG, "nl80211: Set freq %d (ht_enabled=%d " "sec_channel_offset=%d)", freq, ht_enabled, sec_channel_offset); msg = nlmsg_alloc(); if (!msg) return -1; nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY); NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq); if (ht_enabled) { switch (sec_channel_offset) { case -1: NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, NL80211_CHAN_HT40MINUS); break; case 1: NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, NL80211_CHAN_HT40PLUS); break; default: #if !(defined (ANDROID_P2P) || defined (LEGACY_STA_EVENTS)) /* Should be change to HT20 as a default value because P2P firmware does not support 11n for BCM4329 */ NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, NL80211_CHAN_HT20); #else NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, NL80211_CHAN_NO_HT); #endif break; } } ret = send_and_recv_msgs(drv, msg, NULL, NULL); msg = NULL; if (ret == 0) { bss->freq = freq; return 0; } wpa_printf(MSG_DEBUG, "nl80211: Failed to set channel (freq=%d): " "%d (%s)", freq, ret, strerror(-ret)); nla_put_failure: nlmsg_free(msg); return -1; } static u32 sta_flags_nl80211(int flags) { u32 f = 0; if (flags & WPA_STA_AUTHORIZED) f |= BIT(NL80211_STA_FLAG_AUTHORIZED); if (flags & WPA_STA_WMM) f |= BIT(NL80211_STA_FLAG_WME); if (flags & WPA_STA_SHORT_PREAMBLE) f |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE); if (flags & WPA_STA_MFP) f |= BIT(NL80211_STA_FLAG_MFP); if (flags & WPA_STA_TDLS_PEER) f |= BIT(NL80211_STA_FLAG_TDLS_PEER); return f; } static int wpa_driver_nl80211_sta_add(void *priv, struct hostapd_sta_add_params *params) { struct i802_bss *bss = priv; struct wpa_driver_nl80211_data *drv = bss->drv; struct nl_msg *msg, *wme = NULL; struct nl80211_sta_flag_update upd; int ret = -ENOBUFS; if ((params->flags & WPA_STA_TDLS_PEER) && !(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) return -EOPNOTSUPP; msg = nlmsg_alloc(); if (!msg) return -ENOMEM; nl80211_cmd(drv, msg, 0, params->set ? NL80211_CMD_SET_STATION : NL80211_CMD_NEW_STATION); NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)); NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr); NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_RATES, params->supp_rates_len, params->supp_rates); if (!params->set) { NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, params->aid); NLA_PUT_U16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL, params->listen_interval); } if (params->ht_capabilities) { NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY, sizeof(*params->ht_capabilities), params->ht_capabilities); } os_memset(&upd, 0, sizeof(upd)); upd.mask = sta_flags_nl80211(params->flags); upd.set = upd.mask; NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd); if (params->flags & WPA_STA_WMM) { wme = nlmsg_alloc(); if (!wme) goto nla_put_failure; NLA_PUT_U8(wme, NL80211_STA_WME_UAPSD_QUEUES, params->qosinfo & WMM_QOSINFO_STA_AC_MASK); NLA_PUT_U8(wme, NL80211_STA_WME_MAX_SP, (params->qosinfo > WMM_QOSINFO_STA_SP_SHIFT) & WMM_QOSINFO_STA_SP_MASK); if (nla_put_nested(msg, NL80211_ATTR_STA_WME, wme) < 0) goto nla_put_failure; } ret = send_and_recv_msgs(drv, msg, NULL, NULL); msg = NULL; if (ret) wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_%s_STATION " "result: %d (%s)", params->set ? "SET" : "NEW", ret, strerror(-ret)); if (ret == -EEXIST) ret = 0; nla_put_failure: nlmsg_free(wme); nlmsg_free(msg); return ret; } static int wpa_driver_nl80211_sta_remove(void *priv, const u8 *addr) { struct i802_bss *bss = priv; struct wpa_driver_nl80211_data *drv = bss->drv; struct nl_msg *msg; int ret; msg = nlmsg_alloc(); if (!msg) return -ENOMEM; nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_STATION); NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)); NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); ret = send_and_recv_msgs(drv, msg, NULL, NULL); if (ret == -ENOENT) return 0; return ret; nla_put_failure: nlmsg_free(msg); return -ENOBUFS; } static void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv, int ifidx) { struct nl_msg *msg; wpa_printf(MSG_DEBUG, "nl80211: Remove interface ifindex=%d", ifidx); /* stop listening for EAPOL on this interface */ del_ifidx(drv, ifidx); msg = nlmsg_alloc(); if (!msg) goto nla_put_failure; nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_INTERFACE); NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifidx); if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0) return; msg = NULL; nla_put_failure: nlmsg_free(msg); wpa_printf(MSG_ERROR, "Failed to remove interface (ifidx=%d)", ifidx); } static const char * nl80211_iftype_str(enum nl80211_iftype mode) { switch (mode) { case NL80211_IFTYPE_ADHOC: return "ADHOC"; case NL80211_IFTYPE_STATION: return "STATION"; case NL80211_IFTYPE_AP: return "AP"; case NL80211_IFTYPE_MONITOR: return "MONITOR"; case NL80211_IFTYPE_P2P_CLIENT: return "P2P_CLIENT"; case NL80211_IFTYPE_P2P_GO: return "P2P_GO"; default: return "unknown"; } } static int nl80211_create_iface_once(struct wpa_driver_nl80211_data *drv, const char *ifname, enum nl80211_iftype iftype, const u8 *addr, int wds) { struct nl_msg *msg, *flags = NULL; int ifidx; int ret = -ENOBUFS; wpa_printf(MSG_DEBUG, "nl80211: Create interface iftype %d (%s)", iftype, nl80211_iftype_str(iftype)); msg = nlmsg_alloc(); if (!msg) return -1; nl80211_cmd(drv, msg, 0, NL80211_CMD_NEW_INTERFACE); NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, ifname); NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, iftype); if (iftype == NL80211_IFTYPE_MONITOR) { int err; flags = nlmsg_alloc(); if (!flags) goto nla_put_failure; NLA_PUT_FLAG(flags, NL80211_MNTR_FLAG_COOK_FRAMES); err = nla_put_nested(msg, NL80211_ATTR_MNTR_FLAGS, flags); nlmsg_free(flags); if (err) goto nla_put_failure; } else if (wds) { NLA_PUT_U8(msg, NL80211_ATTR_4ADDR, wds); } ret = send_and_recv_msgs(drv, msg, NULL, NULL); msg = NULL; if (ret) { nla_put_failure: nlmsg_free(msg); wpa_printf(MSG_ERROR, "Failed to create interface %s: %d (%s)", ifname, ret, strerror(-ret)); return ret; } ifidx = if_nametoindex(ifname); wpa_printf(MSG_DEBUG, "nl80211: New interface %s created: ifindex=%d", ifname, ifidx); if (ifidx <= 0) return -1; /* start listening for EAPOL on this interface */ add_ifidx(drv, ifidx); if (addr && iftype != NL80211_IFTYPE_MONITOR && linux_set_ifhwaddr(drv->global->ioctl_sock, ifname, addr)) { nl80211_remove_iface(drv, ifidx); return -1; } return ifidx; } static int nl80211_create_iface(struct wpa_driver_nl80211_data *drv, const char *ifname, enum nl80211_iftype iftype, const u8 *addr, int wds) { int ret; ret = nl80211_create_iface_once(drv, ifname, iftype, addr, wds); /* if error occurred and interface exists already */ if (ret == -ENFILE && if_nametoindex(ifname)) { wpa_printf(MSG_INFO, "Try to remove and re-create %s", ifname); /* Try to remove the interface that was already there. */ nl80211_remove_iface(drv, if_nametoindex(ifname)); /* Try to create the interface again */ ret = nl80211_create_iface_once(drv, ifname, iftype, addr, wds); } if (ret >= 0 && is_p2p_interface(iftype)) nl80211_disable_11b_rates(drv, ret, 1); return ret; } static void handle_tx_callback(void *ctx, u8 *buf, size_t len, int ok) { struct ieee80211_hdr *hdr; u16 fc; union wpa_event_data event; hdr = (struct ieee80211_hdr *) buf; fc = le_to_host16(hdr->frame_control); os_memset(&event, 0, sizeof(event)); event.tx_status.type = WLAN_FC_GET_TYPE(fc); event.tx_status.stype = WLAN_FC_GET_STYPE(fc); event.tx_status.dst = hdr->addr1; event.tx_status.data = buf; event.tx_status.data_len = len; event.tx_status.ack = ok; wpa_supplicant_event(ctx, EVENT_TX_STATUS, &event); } static void from_unknown_sta(struct wpa_driver_nl80211_data *drv, u8 *buf, size_t len) { struct ieee80211_hdr *hdr = (void *)buf; u16 fc; union wpa_event_data event; if (len < sizeof(*hdr)) return; fc = le_to_host16(hdr->frame_control); os_memset(&event, 0, sizeof(event)); event.rx_from_unknown.bssid = get_hdr_bssid(hdr, len); event.rx_from_unknown.addr = hdr->addr2; event.rx_from_unknown.wds = (fc & (WLAN_FC_FROMDS | WLAN_FC_TODS)) == (WLAN_FC_FROMDS | WLAN_FC_TODS); wpa_supplicant_event(drv->ctx, EVENT_RX_FROM_UNKNOWN, &event); } static void handle_frame(struct wpa_driver_nl80211_data *drv, u8 *buf, size_t len, int datarate, int ssi_signal) { struct ieee80211_hdr *hdr; u16 fc; union wpa_event_data event; hdr = (struct ieee80211_hdr *) buf; fc = le_to_host16(hdr->frame_control); switch (WLAN_FC_GET_TYPE(fc)) { case WLAN_FC_TYPE_MGMT: os_memset(&event, 0, sizeof(event)); event.rx_mgmt.frame = buf; event.rx_mgmt.frame_len = len; event.rx_mgmt.datarate = datarate; event.rx_mgmt.ssi_signal = ssi_signal; wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event); break; case WLAN_FC_TYPE_CTRL: /* can only get here with PS-Poll frames */ wpa_printf(MSG_DEBUG, "CTRL"); from_unknown_sta(drv, buf, len); break; case WLAN_FC_TYPE_DATA: from_unknown_sta(drv, buf, len); break; } } static void handle_monitor_read(int sock, void *eloop_ctx, void *sock_ctx) { struct wpa_driver_nl80211_data *drv = eloop_ctx; int len; unsigned char buf[3000]; struct ieee80211_radiotap_iterator iter; int ret; int datarate = 0, ssi_signal = 0; int injected = 0, failed = 0, rxflags = 0; len = recv(sock, buf, sizeof(buf), 0); if (len < 0) { perror("recv"); return; } if (ieee80211_radiotap_iterator_init(&iter, (void*)buf, len)) { printf("received invalid radiotap frame\n"); return; } while (1) { ret = ieee80211_radiotap_iterator_next(&iter); if (ret == -ENOENT) break; if (ret) { printf("received invalid radiotap frame (%d)\n", ret); return; } switch (iter.this_arg_index) { case IEEE80211_RADIOTAP_FLAGS: if (*iter.this_arg & IEEE80211_RADIOTAP_F_FCS) len -= 4; break; case IEEE80211_RADIOTAP_RX_FLAGS: rxflags = 1; break; case IEEE80211_RADIOTAP_TX_FLAGS: injected = 1; failed = le_to_host16((*(uint16_t *) iter.this_arg)) & IEEE80211_RADIOTAP_F_TX_FAIL; break; case IEEE80211_RADIOTAP_DATA_RETRIES: break; case IEEE80211_RADIOTAP_CHANNEL: /* TODO: convert from freq/flags to channel number */ break; case IEEE80211_RADIOTAP_RATE: datarate = *iter.this_arg * 5; break; case IEEE80211_RADIOTAP_DBM_ANTSIGNAL: ssi_signal = (s8) *iter.this_arg; break; } } if (rxflags && injected) return; if (!injected) handle_frame(drv, buf + iter.max_length, len - iter.max_length, datarate, ssi_signal); else handle_tx_callback(drv->ctx, buf + iter.max_length, len - iter.max_length, !failed); } /* * we post-process the filter code later and rewrite * this to the offset to the last instruction */ #define PASS 0xFF #define FAIL 0xFE static struct sock_filter msock_filter_insns[] = { /* * do a little-endian load of the radiotap length field */ /* load lower byte into A */ BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 2), /* put it into X (== index register) */ BPF_STMT(BPF_MISC| BPF_TAX, 0), /* load upper byte into A */ BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 3), /* left-shift it by 8 */ BPF_STMT(BPF_ALU | BPF_LSH | BPF_K, 8), /* or with X */ BPF_STMT(BPF_ALU | BPF_OR | BPF_X, 0), /* put result into X */ BPF_STMT(BPF_MISC| BPF_TAX, 0), /* * Allow management frames through, this also gives us those * management frames that we sent ourselves with status */ /* load the lower byte of the IEEE 802.11 frame control field */ BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0), /* mask off frame type and version */ BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0xF), /* accept frame if it's both 0, fall through otherwise */ BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0, PASS, 0), /* * TODO: add a bit to radiotap RX flags that indicates * that the sending station is not associated, then * add a filter here that filters on our DA and that flag * to allow us to deauth frames to that bad station. * * For now allow all To DS data frames through. */ /* load the IEEE 802.11 frame control field */ BPF_STMT(BPF_LD | BPF_H | BPF_IND, 0), /* mask off frame type, version and DS status */ BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x0F03), /* accept frame if version 0, type 2 and To DS, fall through otherwise */ BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0801, PASS, 0), #if 0 /* * drop non-data frames */ /* load the lower byte of the frame control field */ BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0), /* mask off QoS bit */ BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x0c), /* drop non-data frames */ BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 8, 0, FAIL), #endif /* load the upper byte of the frame control field */ BPF_STMT(BPF_LD | BPF_B | BPF_IND, 1), /* mask off toDS/fromDS */ BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x03), /* accept WDS frames */ BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 3, PASS, 0), /* * add header length to index */ /* load the lower byte of the frame control field */ BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0), /* mask off QoS bit */ BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x80), /* right shift it by 6 to give 0 or 2 */ BPF_STMT(BPF_ALU | BPF_RSH | BPF_K, 6), /* add data frame header length */ BPF_STMT(BPF_ALU | BPF_ADD | BPF_K, 24), /* add index, was start of 802.11 header */ BPF_STMT(BPF_ALU | BPF_ADD | BPF_X, 0), /* move to index, now start of LL header */ BPF_STMT(BPF_MISC | BPF_TAX, 0), /* * Accept empty data frames, we use those for * polling activity. */ BPF_STMT(BPF_LD | BPF_W | BPF_LEN, 0), BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_X, 0, PASS, 0), /* * Accept EAPOL frames */ BPF_STMT(BPF_LD | BPF_W | BPF_IND, 0), BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0xAAAA0300, 0, FAIL), BPF_STMT(BPF_LD | BPF_W | BPF_IND, 4), BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0000888E, PASS, FAIL), /* keep these last two statements or change the code below */ /* return 0 == "DROP" */ BPF_STMT(BPF_RET | BPF_K, 0), /* return ~0 == "keep all" */ BPF_STMT(BPF_RET | BPF_K, ~0), }; static struct sock_fprog msock_filter = { .len = sizeof(msock_filter_insns)/sizeof(msock_filter_insns[0]), .filter = msock_filter_insns, }; static int add_monitor_filter(int s) { int idx; /* rewrite all PASS/FAIL jump offsets */ for (idx = 0; idx < msock_filter.len; idx++) { struct sock_filter *insn = &msock_filter_insns[idx]; if (BPF_CLASS(insn->code) == BPF_JMP) { if (insn->code == (BPF_JMP|BPF_JA)) { if (insn->k == PASS) insn->k = msock_filter.len - idx - 2; else if (insn->k == FAIL) insn->k = msock_filter.len - idx - 3; } if (insn->jt == PASS) insn->jt = msock_filter.len - idx - 2; else if (insn->jt == FAIL) insn->jt = msock_filter.len - idx - 3; if (insn->jf == PASS) insn->jf = msock_filter.len - idx - 2; else if (insn->jf == FAIL) insn->jf = msock_filter.len - idx - 3; } } if (setsockopt(s, SOL_SOCKET, SO_ATTACH_FILTER, &msock_filter, sizeof(msock_filter))) { perror("SO_ATTACH_FILTER"); return -1; } return 0; } static void nl80211_remove_monitor_interface( struct wpa_driver_nl80211_data *drv) { drv->monitor_refcount--; if (drv->monitor_refcount > 0) return; if (drv->monitor_ifidx >= 0) { nl80211_remove_iface(drv, drv->monitor_ifidx); drv->monitor_ifidx = -1; } if (drv->monitor_sock >= 0) { eloop_unregister_read_sock(drv->monitor_sock); close(drv->monitor_sock); drv->monitor_sock = -1; } } static int nl80211_create_monitor_interface(struct wpa_driver_nl80211_data *drv) { char buf[IFNAMSIZ]; struct sockaddr_ll ll; int optval; socklen_t optlen; if (drv->monitor_ifidx >= 0) { drv->monitor_refcount++; return 0; } if (os_strncmp(drv->first_bss.ifname, "p2p-", 4) == 0) { /* * P2P interface name is of the format p2p-%s-%d. For monitor * interface name corresponding to P2P GO, replace "p2p-" with * "mon-" to retain the same interface name length and to * indicate that it is a monitor interface. */ snprintf(buf, IFNAMSIZ, "mon-%s", drv->first_bss.ifname + 4); } else { /* Non-P2P interface with AP functionality. */ snprintf(buf, IFNAMSIZ, "mon.%s", drv->first_bss.ifname); } buf[IFNAMSIZ - 1] = '\0'; drv->monitor_ifidx = nl80211_create_iface(drv, buf, NL80211_IFTYPE_MONITOR, NULL, 0); if (drv->monitor_ifidx == -EOPNOTSUPP) { /* * This is backward compatibility for a few versions of * the kernel only that didn't advertise the right * attributes for the only driver that then supported * AP mode w/o monitor -- ath6kl. */ wpa_printf(MSG_DEBUG, "nl80211: Driver does not support " "monitor interface type - try to run without it"); drv->device_ap_sme = 1; } if (drv->monitor_ifidx < 0) return -1; if (linux_set_iface_flags(drv->global->ioctl_sock, buf, 1)) goto error; memset(&ll, 0, sizeof(ll)); ll.sll_family = AF_PACKET; ll.sll_ifindex = drv->monitor_ifidx; drv->monitor_sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL)); if (drv->monitor_sock < 0) { perror("socket[PF_PACKET,SOCK_RAW]"); goto error; } if (add_monitor_filter(drv->monitor_sock)) { wpa_printf(MSG_INFO, "Failed to set socket filter for monitor " "interface; do filtering in user space"); /* This works, but will cost in performance. */ } if (bind(drv->monitor_sock, (struct sockaddr *) &ll, sizeof(ll)) < 0) { perror("monitor socket bind"); goto error; } optlen = sizeof(optval); optval = 20; if (setsockopt (drv->monitor_sock, SOL_SOCKET, SO_PRIORITY, &optval, optlen)) { perror("Failed to set socket priority"); goto error; } if (eloop_register_read_sock(drv->monitor_sock, handle_monitor_read, drv, NULL)) { printf("Could not register monitor read socket\n"); goto error; } return 0; error: nl80211_remove_monitor_interface(drv); return -1; } static int nl80211_setup_ap(struct i802_bss *bss) { struct wpa_driver_nl80211_data *drv = bss->drv; wpa_printf(MSG_DEBUG, "nl80211: Setup AP - device_ap_sme=%d " "use_monitor=%d", drv->device_ap_sme, drv->use_monitor); /* * Disable Probe Request reporting unless we need it in this way for * devices that include the AP SME, in the other case (unless using * monitor iface) we'll get it through the nl_mgmt socket instead. */ if (!drv->device_ap_sme) wpa_driver_nl80211_probe_req_report(bss, 0); if (!drv->device_ap_sme && !drv->use_monitor) if (nl80211_mgmt_subscribe_ap(bss)) return -1; if (drv->device_ap_sme && !drv->use_monitor) if (nl80211_mgmt_subscribe_ap_dev_sme(bss)) return -1; if (!drv->device_ap_sme && drv->use_monitor && nl80211_create_monitor_interface(drv) && !drv->device_ap_sme) return -1; #ifdef ANDROID_P2P if (drv->device_ap_sme && drv->use_monitor) if (nl80211_mgmt_subscribe_ap_dev_sme(bss)) return -1; if (drv->use_monitor && nl80211_create_monitor_interface(drv)) return -1; #endif if (drv->device_ap_sme && wpa_driver_nl80211_probe_req_report(bss, 1) < 0) { wpa_printf(MSG_DEBUG, "nl80211: Failed to enable " "Probe Request frame reporting in AP mode"); /* Try to survive without this */ } #if defined (LEGACY_STA_EVENTS) /* For AP mode, enable probe req report even if device_ap_sme * is not enabled */ wpa_printf(MSG_DEBUG, "nl80211: Enabling probe req report"); wpa_driver_nl80211_probe_req_report(bss, 1); #endif return 0; } static void nl80211_teardown_ap(struct i802_bss *bss) { struct wpa_driver_nl80211_data *drv = bss->drv; if (drv->device_ap_sme) { wpa_driver_nl80211_probe_req_report(bss, 0); if (!drv->use_monitor) nl80211_mgmt_unsubscribe(bss, "AP teardown (dev SME)"); } else if (drv->use_monitor) nl80211_remove_monitor_interface(drv); else nl80211_mgmt_unsubscribe(bss, "AP teardown"); bss->beacon_set = 0; } static int nl80211_send_eapol_data(struct i802_bss *bss, const u8 *addr, const u8 *data, size_t data_len) { struct sockaddr_ll ll; int ret; if (bss->drv->eapol_tx_sock < 0) { wpa_printf(MSG_DEBUG, "nl80211: No socket to send EAPOL"); return -1; } os_memset(&ll, 0, sizeof(ll)); ll.sll_family = AF_PACKET; ll.sll_ifindex = bss->ifindex; ll.sll_protocol = htons(ETH_P_PAE); ll.sll_halen = ETH_ALEN; os_memcpy(ll.sll_addr, addr, ETH_ALEN); ret = sendto(bss->drv->eapol_tx_sock, data, data_len, 0, (struct sockaddr *) &ll, sizeof(ll)); if (ret < 0) wpa_printf(MSG_ERROR, "nl80211: EAPOL TX: %s", strerror(errno)); return ret; } static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 }; static int wpa_driver_nl80211_hapd_send_eapol( void *priv, const u8 *addr, const u8 *data, size_t data_len, int encrypt, const u8 *own_addr, u32 flags) { struct i802_bss *bss = priv; struct wpa_driver_nl80211_data *drv = bss->drv; struct ieee80211_hdr *hdr; size_t len; u8 *pos; int res; int qos = flags & WPA_STA_WMM; #if defined (LEGACY_STA_EVENTS) || !defined (ANDROID_P2P) if (drv->device_ap_sme || !drv->use_monitor) #else if (drv->device_ap_sme && !drv->use_monitor) #endif return nl80211_send_eapol_data(bss, addr, data, data_len); len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 + data_len; hdr = os_zalloc(len); if (hdr == NULL) { printf("malloc() failed for i802_send_data(len=%lu)\n", (unsigned long) len); return -1; } hdr->frame_control = IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA); hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS); if (encrypt) hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP); if (qos) { hdr->frame_control |= host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4); } memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN); memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN); memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN); pos = (u8 *) (hdr + 1); if (qos) { /* Set highest priority in QoS header */ pos[0] = 7; pos[1] = 0; pos += 2; } memcpy(pos, rfc1042_header, sizeof(rfc1042_header)); pos += sizeof(rfc1042_header); WPA_PUT_BE16(pos, ETH_P_PAE); pos += 2; memcpy(pos, data, data_len); res = wpa_driver_nl80211_send_frame(bss, (u8 *) hdr, len, encrypt, 0, 0, 0, 0, 0); if (res < 0) { wpa_printf(MSG_ERROR, "i802_send_eapol - packet len: %lu - " "failed: %d (%s)", (unsigned long) len, errno, strerror(errno)); } os_free(hdr); return res; } static int wpa_driver_nl80211_sta_set_flags(void *priv, const u8 *addr, int total_flags, int flags_or, int flags_and) { struct i802_bss *bss = priv; struct wpa_driver_nl80211_data *drv = bss->drv; struct nl_msg *msg, *flags = NULL; struct nl80211_sta_flag_update upd; msg = nlmsg_alloc(); if (!msg) return -ENOMEM; flags = nlmsg_alloc(); if (!flags) { nlmsg_free(msg); return -ENOMEM; } nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION); NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)); NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); /* * Backwards compatibility version using NL80211_ATTR_STA_FLAGS. This * can be removed eventually. */ if (total_flags & WPA_STA_AUTHORIZED) NLA_PUT_FLAG(flags, NL80211_STA_FLAG_AUTHORIZED); if (total_flags & WPA_STA_WMM) NLA_PUT_FLAG(flags, NL80211_STA_FLAG_WME); if (total_flags & WPA_STA_SHORT_PREAMBLE) NLA_PUT_FLAG(flags, NL80211_STA_FLAG_SHORT_PREAMBLE); if (total_flags & WPA_STA_MFP) NLA_PUT_FLAG(flags, NL80211_STA_FLAG_MFP); if (total_flags & WPA_STA_TDLS_PEER) NLA_PUT_FLAG(flags, NL80211_STA_FLAG_TDLS_PEER); if (nla_put_nested(msg, NL80211_ATTR_STA_FLAGS, flags)) goto nla_put_failure; os_memset(&upd, 0, sizeof(upd)); upd.mask = sta_flags_nl80211(flags_or | ~flags_and); upd.set = sta_flags_nl80211(flags_or); NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd); nlmsg_free(flags); return send_and_recv_msgs(drv, msg, NULL, NULL); nla_put_failure: nlmsg_free(msg); nlmsg_free(flags); return -ENOBUFS; } static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv, struct wpa_driver_associate_params *params) { enum nl80211_iftype nlmode; if (params->p2p) { wpa_printf(MSG_DEBUG, "nl80211: Setup AP operations for P2P " "group (GO)"); nlmode = NL80211_IFTYPE_P2P_GO; } else nlmode = NL80211_IFTYPE_AP; if (wpa_driver_nl80211_set_mode(&drv->first_bss, nlmode) || wpa_driver_nl80211_set_freq(&drv->first_bss, params->freq, 0, 0)) { nl80211_remove_monitor_interface(drv); return -1; } return 0; } static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv) { struct nl_msg *msg; int ret = -1; msg = nlmsg_alloc(); if (!msg) return -1; nl80211_cmd(drv, msg, 0, NL80211_CMD_LEAVE_IBSS); NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); ret = send_and_recv_msgs(drv, msg, NULL, NULL); msg = NULL; if (ret) { wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS failed: ret=%d " "(%s)", ret, strerror(-ret)); goto nla_put_failure; } ret = 0; wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS request sent successfully"); nla_put_failure: nlmsg_free(msg); return ret; } static int wpa_driver_nl80211_ibss(struct wpa_driver_nl80211_data *drv, struct wpa_driver_associate_params *params) { struct nl_msg *msg; int ret = -1; int count = 0; wpa_printf(MSG_DEBUG, "nl80211: Join IBSS (ifindex=%d)", drv->ifindex); if (wpa_driver_nl80211_set_mode(&drv->first_bss, NL80211_IFTYPE_ADHOC)) { wpa_printf(MSG_INFO, "nl80211: Failed to set interface into " "IBSS mode"); return -1; } retry: msg = nlmsg_alloc(); if (!msg) return -1; nl80211_cmd(drv, msg, 0, NL80211_CMD_JOIN_IBSS); NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); if (params->ssid == NULL || params->ssid_len > sizeof(drv->ssid)) goto nla_put_failure; wpa_hexdump_ascii(MSG_DEBUG, " * SSID", params->ssid, params->ssid_len); NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len, params->ssid); os_memcpy(drv->ssid, params->ssid, params->ssid_len); drv->ssid_len = params->ssid_len; wpa_printf(MSG_DEBUG, " * freq=%d", params->freq); NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq); ret = nl80211_set_conn_keys(params, msg); if (ret) goto nla_put_failure; if (params->bssid && params->fixed_bssid) { wpa_printf(MSG_DEBUG, " * BSSID=" MACSTR, MAC2STR(params->bssid)); NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid); } if (params->key_mgmt_suite == KEY_MGMT_802_1X || params->key_mgmt_suite == KEY_MGMT_PSK || params->key_mgmt_suite == KEY_MGMT_802_1X_SHA256 || params->key_mgmt_suite == KEY_MGMT_PSK_SHA256) { wpa_printf(MSG_DEBUG, " * control port"); NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT); } if (params->wpa_ie) { wpa_hexdump(MSG_DEBUG, " * Extra IEs for Beacon/Probe Response frames", params->wpa_ie, params->wpa_ie_len); NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len, params->wpa_ie); } ret = send_and_recv_msgs(drv, msg, NULL, NULL); msg = NULL; if (ret) { wpa_printf(MSG_DEBUG, "nl80211: Join IBSS failed: ret=%d (%s)", ret, strerror(-ret)); count++; if (ret == -EALREADY && count == 1) { wpa_printf(MSG_DEBUG, "nl80211: Retry IBSS join after " "forced leave"); nl80211_leave_ibss(drv); nlmsg_free(msg); goto retry; } goto nla_put_failure; } ret = 0; wpa_printf(MSG_DEBUG, "nl80211: Join IBSS request sent successfully"); nla_put_failure: nlmsg_free(msg); return ret; } static unsigned int nl80211_get_assoc_bssid(struct wpa_driver_nl80211_data *drv, u8 *bssid) { struct nl_msg *msg; int ret; struct nl80211_bss_info_arg arg; os_memset(&arg, 0, sizeof(arg)); msg = nlmsg_alloc(); if (!msg) goto nla_put_failure; nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SCAN); NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); arg.drv = drv; ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg); msg = NULL; if (ret == 0) { if (is_zero_ether_addr(arg.assoc_bssid)) return -ENOTCONN; os_memcpy(bssid, arg.assoc_bssid, ETH_ALEN); return 0; } wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d " "(%s)", ret, strerror(-ret)); nla_put_failure: nlmsg_free(msg); return drv->assoc_freq; } static int nl80211_disconnect(struct wpa_driver_nl80211_data *drv, const u8 *bssid) { u8 addr[ETH_ALEN]; if (bssid == NULL) { int res = nl80211_get_assoc_bssid(drv, addr); if (res) return res; bssid = addr; } return wpa_driver_nl80211_disconnect(drv, bssid, WLAN_REASON_PREV_AUTH_NOT_VALID); } static int wpa_driver_nl80211_connect( struct wpa_driver_nl80211_data *drv, struct wpa_driver_associate_params *params) { struct nl_msg *msg; enum nl80211_auth_type type; int ret = 0; int algs; msg = nlmsg_alloc(); if (!msg) return -1; wpa_printf(MSG_DEBUG, "nl80211: Connect (ifindex=%d)", drv->ifindex); nl80211_cmd(drv, msg, 0, NL80211_CMD_CONNECT); NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); if (params->bssid) { wpa_printf(MSG_DEBUG, " * bssid=" MACSTR, MAC2STR(params->bssid)); NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid); } if (params->freq) { wpa_printf(MSG_DEBUG, " * freq=%d", params->freq); NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq); } if (params->bg_scan_period >= 0) { wpa_printf(MSG_DEBUG, " * bg scan period=%d", params->bg_scan_period); NLA_PUT_U16(msg, NL80211_ATTR_BG_SCAN_PERIOD, params->bg_scan_period); } if (params->ssid) { wpa_hexdump_ascii(MSG_DEBUG, " * SSID", params->ssid, params->ssid_len); NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len, params->ssid); if (params->ssid_len > sizeof(drv->ssid)) goto nla_put_failure; os_memcpy(drv->ssid, params->ssid, params->ssid_len); drv->ssid_len = params->ssid_len; } wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len); if (params->wpa_ie) NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len, params->wpa_ie); algs = 0; if (params->auth_alg & WPA_AUTH_ALG_OPEN) algs++; if (params->auth_alg & WPA_AUTH_ALG_SHARED) algs++; if (params->auth_alg & WPA_AUTH_ALG_LEAP) algs++; if (algs > 1) { wpa_printf(MSG_DEBUG, " * Leave out Auth Type for automatic " "selection"); goto skip_auth_type; } if (params->auth_alg & WPA_AUTH_ALG_OPEN) type = NL80211_AUTHTYPE_OPEN_SYSTEM; else if (params->auth_alg & WPA_AUTH_ALG_SHARED) type = NL80211_AUTHTYPE_SHARED_KEY; else if (params->auth_alg & WPA_AUTH_ALG_LEAP) type = NL80211_AUTHTYPE_NETWORK_EAP; else if (params->auth_alg & WPA_AUTH_ALG_FT) type = NL80211_AUTHTYPE_FT; else goto nla_put_failure; wpa_printf(MSG_DEBUG, " * Auth Type %d", type); NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type); skip_auth_type: if (params->wpa_proto) { enum nl80211_wpa_versions ver = 0; if (params->wpa_proto & WPA_PROTO_WPA) ver |= NL80211_WPA_VERSION_1; if (params->wpa_proto & WPA_PROTO_RSN) ver |= NL80211_WPA_VERSION_2; wpa_printf(MSG_DEBUG, " * WPA Versions 0x%x", ver); NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver); } if (params->pairwise_suite != CIPHER_NONE) { int cipher; switch (params->pairwise_suite) { case CIPHER_WEP40: cipher = WLAN_CIPHER_SUITE_WEP40; break; case CIPHER_WEP104: cipher = WLAN_CIPHER_SUITE_WEP104; break; case CIPHER_CCMP: cipher = WLAN_CIPHER_SUITE_CCMP; break; case CIPHER_GCMP: cipher = WLAN_CIPHER_SUITE_GCMP; break; case CIPHER_TKIP: default: cipher = WLAN_CIPHER_SUITE_TKIP; break; } NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher); } if (params->group_suite != CIPHER_NONE) { int cipher; switch (params->group_suite) { case CIPHER_WEP40: cipher = WLAN_CIPHER_SUITE_WEP40; break; case CIPHER_WEP104: cipher = WLAN_CIPHER_SUITE_WEP104; break; case CIPHER_CCMP: cipher = WLAN_CIPHER_SUITE_CCMP; break; case CIPHER_GCMP: cipher = WLAN_CIPHER_SUITE_GCMP; break; case CIPHER_TKIP: default: cipher = WLAN_CIPHER_SUITE_TKIP; break; } NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher); } if (params->key_mgmt_suite == KEY_MGMT_802_1X || params->key_mgmt_suite == KEY_MGMT_PSK) { int mgmt = WLAN_AKM_SUITE_PSK; switch (params->key_mgmt_suite) { case KEY_MGMT_802_1X: mgmt = WLAN_AKM_SUITE_8021X; break; case KEY_MGMT_PSK: default: mgmt = WLAN_AKM_SUITE_PSK; break; } NLA_PUT_U32(msg, NL80211_ATTR_AKM_SUITES, mgmt); } if (params->disable_ht) NLA_PUT_FLAG(msg, NL80211_ATTR_DISABLE_HT); if (params->htcaps && params->htcaps_mask) { int sz = sizeof(struct ieee80211_ht_capabilities); NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY, sz, params->htcaps); NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY_MASK, sz, params->htcaps_mask); } ret = nl80211_set_conn_keys(params, msg); if (ret) goto nla_put_failure; ret = send_and_recv_msgs(drv, msg, NULL, NULL); msg = NULL; if (ret) { wpa_printf(MSG_DEBUG, "nl80211: MLME connect failed: ret=%d " "(%s)", ret, strerror(-ret)); /* * cfg80211 does not currently accept new connection if we are * already connected. As a workaround, force disconnection and * try again once the driver indicates it completed * disconnection. */ if (ret == -EALREADY) nl80211_disconnect(drv, params->bssid); goto nla_put_failure; } ret = 0; wpa_printf(MSG_DEBUG, "nl80211: Connect request send successfully"); nla_put_failure: nlmsg_free(msg); return ret; } static int wpa_driver_nl80211_associate( void *priv, struct wpa_driver_associate_params *params) { struct i802_bss *bss = priv; struct wpa_driver_nl80211_data *drv = bss->drv; int ret = -1; struct nl_msg *msg; if (params->mode == IEEE80211_MODE_AP) return wpa_driver_nl80211_ap(drv, params); if (params->mode == IEEE80211_MODE_IBSS) return wpa_driver_nl80211_ibss(drv, params); if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) { enum nl80211_iftype nlmode = params->p2p ? NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION; if (wpa_driver_nl80211_set_mode(priv, nlmode) < 0) return -1; return wpa_driver_nl80211_connect(drv, params); } drv->associated = 0; msg = nlmsg_alloc(); if (!msg) return -1; wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)", drv->ifindex); nl80211_cmd(drv, msg, 0, NL80211_CMD_ASSOCIATE); NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); if (params->bssid) { wpa_printf(MSG_DEBUG, " * bssid=" MACSTR, MAC2STR(params->bssid)); NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid); } if (params->freq) { wpa_printf(MSG_DEBUG, " * freq=%d", params->freq); NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq); drv->assoc_freq = params->freq; } else drv->assoc_freq = 0; if (params->bg_scan_period >= 0) { wpa_printf(MSG_DEBUG, " * bg scan period=%d", params->bg_scan_period); NLA_PUT_U16(msg, NL80211_ATTR_BG_SCAN_PERIOD, params->bg_scan_period); } if (params->ssid) { wpa_hexdump_ascii(MSG_DEBUG, " * SSID", params->ssid, params->ssid_len); NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len, params->ssid); if (params->ssid_len > sizeof(drv->ssid)) goto nla_put_failure; os_memcpy(drv->ssid, params->ssid, params->ssid_len); drv->ssid_len = params->ssid_len; } wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len); if (params->wpa_ie) NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len, params->wpa_ie); if (params->pairwise_suite != CIPHER_NONE) { int cipher; switch (params->pairwise_suite) { case CIPHER_WEP40: cipher = WLAN_CIPHER_SUITE_WEP40; break; case CIPHER_WEP104: cipher = WLAN_CIPHER_SUITE_WEP104; break; case CIPHER_CCMP: cipher = WLAN_CIPHER_SUITE_CCMP; break; case CIPHER_GCMP: cipher = WLAN_CIPHER_SUITE_GCMP; break; case CIPHER_TKIP: default: cipher = WLAN_CIPHER_SUITE_TKIP; break; } wpa_printf(MSG_DEBUG, " * pairwise=0x%x", cipher); NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher); } if (params->group_suite != CIPHER_NONE) { int cipher; switch (params->group_suite) { case CIPHER_WEP40: cipher = WLAN_CIPHER_SUITE_WEP40; break; case CIPHER_WEP104: cipher = WLAN_CIPHER_SUITE_WEP104; break; case CIPHER_CCMP: cipher = WLAN_CIPHER_SUITE_CCMP; break; case CIPHER_GCMP: cipher = WLAN_CIPHER_SUITE_GCMP; break; case CIPHER_TKIP: default: cipher = WLAN_CIPHER_SUITE_TKIP; break; } wpa_printf(MSG_DEBUG, " * group=0x%x", cipher); NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher); } #ifdef CONFIG_IEEE80211W if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED) NLA_PUT_U32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED); #endif /* CONFIG_IEEE80211W */ NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT); if (params->prev_bssid) { wpa_printf(MSG_DEBUG, " * prev_bssid=" MACSTR, MAC2STR(params->prev_bssid)); NLA_PUT(msg, NL80211_ATTR_PREV_BSSID, ETH_ALEN, params->prev_bssid); } if (params->disable_ht) NLA_PUT_FLAG(msg, NL80211_ATTR_DISABLE_HT); if (params->htcaps && params->htcaps_mask) { int sz = sizeof(struct ieee80211_ht_capabilities); NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY, sz, params->htcaps); NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY_MASK, sz, params->htcaps_mask); } if (params->p2p) wpa_printf(MSG_DEBUG, " * P2P group"); ret = send_and_recv_msgs(drv, msg, NULL, NULL); msg = NULL; if (ret) { wpa_dbg(drv->ctx, MSG_DEBUG, "nl80211: MLME command failed (assoc): ret=%d (%s)", ret, strerror(-ret)); nl80211_dump_scan(drv); goto nla_put_failure; } ret = 0; wpa_printf(MSG_DEBUG, "nl80211: Association request send " "successfully"); nla_put_failure: nlmsg_free(msg); return ret; } static int nl80211_set_mode(struct wpa_driver_nl80211_data *drv, int ifindex, enum nl80211_iftype mode) { struct nl_msg *msg; int ret = -ENOBUFS; wpa_printf(MSG_DEBUG, "nl80211: Set mode ifindex %d iftype %d (%s)", ifindex, mode, nl80211_iftype_str(mode)); msg = nlmsg_alloc(); if (!msg) return -ENOMEM; nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_INTERFACE); NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex); NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, mode); ret = send_and_recv_msgs(drv, msg, NULL, NULL); msg = NULL; if (!ret) return 0; nla_put_failure: nlmsg_free(msg); wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface %d to mode %d:" " %d (%s)", ifindex, mode, ret, strerror(-ret)); return ret; } static int wpa_driver_nl80211_set_mode(struct i802_bss *bss, enum nl80211_iftype nlmode) { struct wpa_driver_nl80211_data *drv = bss->drv; int ret = -1; int i; int was_ap = is_ap_interface(drv->nlmode); int res; res = nl80211_set_mode(drv, drv->ifindex, nlmode); if (res == 0) { drv->nlmode = nlmode; ret = 0; goto done; } if (res == -ENODEV) return -1; if (nlmode == drv->nlmode) { wpa_printf(MSG_DEBUG, "nl80211: Interface already in " "requested mode - ignore error"); ret = 0; goto done; /* Already in the requested mode */ } /* mac80211 doesn't allow mode changes while the device is up, so * take the device down, try to set the mode again, and bring the * device back up. */ wpa_printf(MSG_DEBUG, "nl80211: Try mode change after setting " "interface down"); for (i = 0; i < 10; i++) { res = linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0); if (res == -EACCES || res == -ENODEV) break; if (res == 0) { /* Try to set the mode again while the interface is * down */ ret = nl80211_set_mode(drv, drv->ifindex, nlmode); if (ret == -EACCES) break; res = linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1); if (res && !ret) ret = -1; else if (ret != -EBUSY) break; } else wpa_printf(MSG_DEBUG, "nl80211: Failed to set " "interface down"); os_sleep(0, 100000); } if (!ret) { wpa_printf(MSG_DEBUG, "nl80211: Mode change succeeded while " "interface is down"); drv->nlmode = nlmode; drv->ignore_if_down_event = 1; } done: if (ret) { wpa_printf(MSG_DEBUG, "nl80211: Interface mode change to %d " "from %d failed", nlmode, drv->nlmode); return ret; } if (is_p2p_interface(nlmode)) nl80211_disable_11b_rates(drv, drv->ifindex, 1); else if (drv->disabled_11b_rates) nl80211_disable_11b_rates(drv, drv->ifindex, 0); if (is_ap_interface(nlmode)) { nl80211_mgmt_unsubscribe(bss, "start AP"); /* Setup additional AP mode functionality if needed */ if (nl80211_setup_ap(bss)) return -1; } else if (was_ap) { /* Remove additional AP mode functionality */ nl80211_teardown_ap(bss); } else { nl80211_mgmt_unsubscribe(bss, "mode change"); } if (!bss->in_deinit && !is_ap_interface(nlmode) && nl80211_mgmt_subscribe_non_ap(bss) < 0) wpa_printf(MSG_DEBUG, "nl80211: Failed to register Action " "frame processing - ignore for now"); return 0; } static int wpa_driver_nl80211_get_capa(void *priv, struct wpa_driver_capa *capa) { struct i802_bss *bss = priv; struct wpa_driver_nl80211_data *drv = bss->drv; if (!drv->has_capability) return -1; os_memcpy(capa, &drv->capa, sizeof(*capa)); return 0; } static int wpa_driver_nl80211_set_operstate(void *priv, int state) { struct i802_bss *bss = priv; struct wpa_driver_nl80211_data *drv = bss->drv; wpa_printf(MSG_DEBUG, "%s: operstate %d->%d (%s)", __func__, drv->operstate, state, state ? "UP" : "DORMANT"); drv->operstate = state; return netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, -1, state ? IF_OPER_UP : IF_OPER_DORMANT); } static int wpa_driver_nl80211_set_supp_port(void *priv, int authorized) { struct i802_bss *bss = priv; struct wpa_driver_nl80211_data *drv = bss->drv; struct nl_msg *msg; struct nl80211_sta_flag_update upd; msg = nlmsg_alloc(); if (!msg) return -ENOMEM; nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION); NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)); NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid); os_memset(&upd, 0, sizeof(upd)); upd.mask = BIT(NL80211_STA_FLAG_AUTHORIZED); if (authorized) upd.set = BIT(NL80211_STA_FLAG_AUTHORIZED); NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd); return send_and_recv_msgs(drv, msg, NULL, NULL); nla_put_failure: nlmsg_free(msg); return -ENOBUFS; } /* Set kernel driver on given frequency (MHz) */ static int i802_set_freq(void *priv, struct hostapd_freq_params *freq) { struct i802_bss *bss = priv; return wpa_driver_nl80211_set_freq(bss, freq->freq, freq->ht_enabled, freq->sec_channel_offset); } #if defined(HOSTAPD) || defined(CONFIG_AP) static inline int min_int(int a, int b) { if (a < b) return a; return b; } static int get_key_handler(struct nl_msg *msg, void *arg) { struct nlattr *tb[NL80211_ATTR_MAX + 1]; struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), genlmsg_attrlen(gnlh, 0), NULL); /* * TODO: validate the key index and mac address! * Otherwise, there's a race condition as soon as * the kernel starts sending key notifications. */ if (tb[NL80211_ATTR_KEY_SEQ]) memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]), min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6)); return NL_SKIP; } static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr, int idx, u8 *seq) { struct i802_bss *bss = priv; struct wpa_driver_nl80211_data *drv = bss->drv; struct nl_msg *msg; msg = nlmsg_alloc(); if (!msg) return -ENOMEM; nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_KEY); if (addr) NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx); NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface)); memset(seq, 0, 6); return send_and_recv_msgs(drv, msg, get_key_handler, seq); nla_put_failure: nlmsg_free(msg); return -ENOBUFS; } static int i802_set_rts(void *priv, int rts) { struct i802_bss *bss = priv; struct wpa_driver_nl80211_data *drv = bss->drv; struct nl_msg *msg; int ret = -ENOBUFS; u32 val; msg = nlmsg_alloc(); if (!msg) return -ENOMEM; if (rts >= 2347) val = (u32) -1; else val = rts; nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY); NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, val); ret = send_and_recv_msgs(drv, msg, NULL, NULL); msg = NULL; if (!ret) return 0; nla_put_failure: nlmsg_free(msg); wpa_printf(MSG_DEBUG, "nl80211: Failed to set RTS threshold %d: " "%d (%s)", rts, ret, strerror(-ret)); return ret; } static int i802_set_frag(void *priv, int frag) { struct i802_bss *bss = priv; struct wpa_driver_nl80211_data *drv = bss->drv; struct nl_msg *msg; int ret = -ENOBUFS; u32 val; msg = nlmsg_alloc(); if (!msg) return -ENOMEM; if (frag >= 2346) val = (u32) -1; else val = frag; nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY); NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, val); ret = send_and_recv_msgs(drv, msg, NULL, NULL); msg = NULL; if (!ret) return 0; nla_put_failure: nlmsg_free(msg); wpa_printf(MSG_DEBUG, "nl80211: Failed to set fragmentation threshold " "%d: %d (%s)", frag, ret, strerror(-ret)); return ret; } static int i802_flush(void *priv) { struct i802_bss *bss = priv; struct wpa_driver_nl80211_data *drv = bss->drv; struct nl_msg *msg; int res; msg = nlmsg_alloc(); if (!msg) return -1; nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_STATION); /* * XXX: FIX! this needs to flush all VLANs too */ NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)); res = send_and_recv_msgs(drv, msg, NULL, NULL); if (res) { wpa_printf(MSG_DEBUG, "nl80211: Station flush failed: ret=%d " "(%s)", res, strerror(-res)); } return res; nla_put_failure: nlmsg_free(msg); return -ENOBUFS; } #endif /* HOSTAPD || CONFIG_AP */ static int get_sta_handler(struct nl_msg *msg, void *arg) { struct nlattr *tb[NL80211_ATTR_MAX + 1]; struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); struct hostap_sta_driver_data *data = arg; struct nlattr *stats[NL80211_STA_INFO_MAX + 1]; static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = { [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 }, [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 }, [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 }, [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 }, [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 }, [NL80211_STA_INFO_TX_FAILED] = { .type = NLA_U32 }, }; nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), genlmsg_attrlen(gnlh, 0), NULL); /* * TODO: validate the interface and mac address! * Otherwise, there's a race condition as soon as * the kernel starts sending station notifications. */ if (!tb[NL80211_ATTR_STA_INFO]) { wpa_printf(MSG_DEBUG, "sta stats missing!"); return NL_SKIP; } if (nla_parse_nested(stats, NL80211_STA_INFO_MAX, tb[NL80211_ATTR_STA_INFO], stats_policy)) { wpa_printf(MSG_DEBUG, "failed to parse nested attributes!"); return NL_SKIP; } if (stats[NL80211_STA_INFO_INACTIVE_TIME]) data->inactive_msec = nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]); if (stats[NL80211_STA_INFO_RX_BYTES]) data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]); if (stats[NL80211_STA_INFO_TX_BYTES]) data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]); if (stats[NL80211_STA_INFO_RX_PACKETS]) data->rx_packets = nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]); if (stats[NL80211_STA_INFO_TX_PACKETS]) data->tx_packets = nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]); if (stats[NL80211_STA_INFO_TX_FAILED]) data->tx_retry_failed = nla_get_u32(stats[NL80211_STA_INFO_TX_FAILED]); return NL_SKIP; } static int i802_read_sta_data(void *priv, struct hostap_sta_driver_data *data, const u8 *addr) { struct i802_bss *bss = priv; struct wpa_driver_nl80211_data *drv = bss->drv; struct nl_msg *msg; os_memset(data, 0, sizeof(*data)); msg = nlmsg_alloc(); if (!msg) return -ENOMEM; nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_STATION); NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)); return send_and_recv_msgs(drv, msg, get_sta_handler, data); nla_put_failure: nlmsg_free(msg); return -ENOBUFS; } #if defined(HOSTAPD) || defined(CONFIG_AP) static int i802_set_tx_queue_params(void *priv, int queue, int aifs, int cw_min, int cw_max, int burst_time) { struct i802_bss *bss = priv; struct wpa_driver_nl80211_data *drv = bss->drv; struct nl_msg *msg; struct nlattr *txq, *params; msg = nlmsg_alloc(); if (!msg) return -1; nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY); NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)); txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS); if (!txq) goto nla_put_failure; /* We are only sending parameters for a single TXQ at a time */ params = nla_nest_start(msg, 1); if (!params) goto nla_put_failure; switch (queue) { case 0: NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VO); break; case 1: NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VI); break; case 2: NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BE); break; case 3: NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BK); break; } /* Burst time is configured in units of 0.1 msec and TXOP parameter in * 32 usec, so need to convert the value here. */ NLA_PUT_U16(msg, NL80211_TXQ_ATTR_TXOP, (burst_time * 100 + 16) / 32); NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min); NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max); NLA_PUT_U8(msg, NL80211_TXQ_ATTR_AIFS, aifs); nla_nest_end(msg, params); nla_nest_end(msg, txq); if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0) return 0; msg = NULL; nla_put_failure: nlmsg_free(msg); return -1; } static int i802_set_sta_vlan(void *priv, const u8 *addr, const char *ifname, int vlan_id) { struct i802_bss *bss = priv; struct wpa_driver_nl80211_data *drv = bss->drv; struct nl_msg *msg; int ret = -ENOBUFS; msg = nlmsg_alloc(); if (!msg) return -ENOMEM; nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION); NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)); NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); NLA_PUT_U32(msg, NL80211_ATTR_STA_VLAN, if_nametoindex(ifname)); ret = send_and_recv_msgs(drv, msg, NULL, NULL); msg = NULL; if (ret < 0) { wpa_printf(MSG_ERROR, "nl80211: NL80211_ATTR_STA_VLAN (addr=" MACSTR " ifname=%s vlan_id=%d) failed: %d (%s)", MAC2STR(addr), ifname, vlan_id, ret, strerror(-ret)); } nla_put_failure: nlmsg_free(msg); return ret; } static int i802_get_inact_sec(void *priv, const u8 *addr) { struct hostap_sta_driver_data data; int ret; data.inactive_msec = (unsigned long) -1; ret = i802_read_sta_data(priv, &data, addr); if (ret || data.inactive_msec == (unsigned long) -1) return -1; return data.inactive_msec / 1000; } static int i802_sta_clear_stats(void *priv, const u8 *addr) { #if 0 /* TODO */ #endif return 0; } static int i802_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr, int reason) { struct i802_bss *bss = priv; struct wpa_driver_nl80211_data *drv = bss->drv; struct ieee80211_mgmt mgmt; if (drv->device_ap_sme) return wpa_driver_nl80211_sta_remove(bss, addr); memset(&mgmt, 0, sizeof(mgmt)); mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_DEAUTH); memcpy(mgmt.da, addr, ETH_ALEN); memcpy(mgmt.sa, own_addr, ETH_ALEN); memcpy(mgmt.bssid, own_addr, ETH_ALEN); mgmt.u.deauth.reason_code = host_to_le16(reason); return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt, IEEE80211_HDRLEN + sizeof(mgmt.u.deauth), 0); } static int i802_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr, int reason) { struct i802_bss *bss = priv; struct wpa_driver_nl80211_data *drv = bss->drv; struct ieee80211_mgmt mgmt; if (drv->device_ap_sme) return wpa_driver_nl80211_sta_remove(bss, addr); memset(&mgmt, 0, sizeof(mgmt)); mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_DISASSOC); memcpy(mgmt.da, addr, ETH_ALEN); memcpy(mgmt.sa, own_addr, ETH_ALEN); memcpy(mgmt.bssid, own_addr, ETH_ALEN); mgmt.u.disassoc.reason_code = host_to_le16(reason); return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt, IEEE80211_HDRLEN + sizeof(mgmt.u.disassoc), 0); } #endif /* HOSTAPD || CONFIG_AP */ #ifdef HOSTAPD static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx) { int i; int *old; wpa_printf(MSG_DEBUG, "nl80211: Add own interface ifindex %d", ifidx); for (i = 0; i < drv->num_if_indices; i++) { if (drv->if_indices[i] == 0) { drv->if_indices[i] = ifidx; return; } } if (drv->if_indices != drv->default_if_indices) old = drv->if_indices; else old = NULL; drv->if_indices = os_realloc_array(old, drv->num_if_indices + 1, sizeof(int)); if (!drv->if_indices) { if (!old) drv->if_indices = drv->default_if_indices; else drv->if_indices = old; wpa_printf(MSG_ERROR, "Failed to reallocate memory for " "interfaces"); wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx); return; } else if (!old) os_memcpy(drv->if_indices, drv->default_if_indices, sizeof(drv->default_if_indices)); drv->if_indices[drv->num_if_indices] = ifidx; drv->num_if_indices++; } static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx) { int i; for (i = 0; i < drv->num_if_indices; i++) { if (drv->if_indices[i] == ifidx) { drv->if_indices[i] = 0; break; } } } static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx) { int i; for (i = 0; i < drv->num_if_indices; i++) if (drv->if_indices[i] == ifidx) return 1; return 0; } static int i802_set_wds_sta(void *priv, const u8 *addr, int aid, int val, const char *bridge_ifname) { struct i802_bss *bss = priv; struct wpa_driver_nl80211_data *drv = bss->drv; char name[IFNAMSIZ + 1]; os_snprintf(name, sizeof(name), "%s.sta%d", bss->ifname, aid); wpa_printf(MSG_DEBUG, "nl80211: Set WDS STA addr=" MACSTR " aid=%d val=%d name=%s", MAC2STR(addr), aid, val, name); if (val) { if (!if_nametoindex(name)) { if (nl80211_create_iface(drv, name, NL80211_IFTYPE_AP_VLAN, NULL, 1) < 0) return -1; if (bridge_ifname && linux_br_add_if(drv->global->ioctl_sock, bridge_ifname, name) < 0) return -1; } if (linux_set_iface_flags(drv->global->ioctl_sock, name, 1)) { wpa_printf(MSG_ERROR, "nl80211: Failed to set WDS STA " "interface %s up", name); } return i802_set_sta_vlan(priv, addr, name, 0); } else { if (bridge_ifname) linux_br_del_if(drv->global->ioctl_sock, bridge_ifname, name); i802_set_sta_vlan(priv, addr, bss->ifname, 0); return wpa_driver_nl80211_if_remove(priv, WPA_IF_AP_VLAN, name); } } static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx) { struct wpa_driver_nl80211_data *drv = eloop_ctx; struct sockaddr_ll lladdr; unsigned char buf[3000]; int len; socklen_t fromlen = sizeof(lladdr); len = recvfrom(sock, buf, sizeof(buf), 0, (struct sockaddr *)&lladdr, &fromlen); if (len < 0) { perror("recv"); return; } if (have_ifidx(drv, lladdr.sll_ifindex)) drv_event_eapol_rx(drv->ctx, lladdr.sll_addr, buf, len); } static int i802_check_bridge(struct wpa_driver_nl80211_data *drv, struct i802_bss *bss, const char *brname, const char *ifname) { int ifindex; char in_br[IFNAMSIZ]; os_strlcpy(bss->brname, brname, IFNAMSIZ); ifindex = if_nametoindex(brname); if (ifindex == 0) { /* * Bridge was configured, but the bridge device does * not exist. Try to add it now. */ if (linux_br_add(drv->global->ioctl_sock, brname) < 0) { wpa_printf(MSG_ERROR, "nl80211: Failed to add the " "bridge interface %s: %s", brname, strerror(errno)); return -1; } bss->added_bridge = 1; add_ifidx(drv, if_nametoindex(brname)); } if (linux_br_get(in_br, ifname) == 0) { if (os_strcmp(in_br, brname) == 0) return 0; /* already in the bridge */ wpa_printf(MSG_DEBUG, "nl80211: Removing interface %s from " "bridge %s", ifname, in_br); if (linux_br_del_if(drv->global->ioctl_sock, in_br, ifname) < 0) { wpa_printf(MSG_ERROR, "nl80211: Failed to " "remove interface %s from bridge " "%s: %s", ifname, brname, strerror(errno)); return -1; } } wpa_printf(MSG_DEBUG, "nl80211: Adding interface %s into bridge %s", ifname, brname); if (linux_br_add_if(drv->global->ioctl_sock, brname, ifname) < 0) { wpa_printf(MSG_ERROR, "nl80211: Failed to add interface %s " "into bridge %s: %s", ifname, brname, strerror(errno)); return -1; } bss->added_if_into_bridge = 1; return 0; } static void *i802_init(struct hostapd_data *hapd, struct wpa_init_params *params) { struct wpa_driver_nl80211_data *drv; struct i802_bss *bss; size_t i; char brname[IFNAMSIZ]; int ifindex, br_ifindex; int br_added = 0; bss = wpa_driver_nl80211_init(hapd, params->ifname, params->global_priv); if (bss == NULL) return NULL; drv = bss->drv; drv->nlmode = NL80211_IFTYPE_AP; drv->eapol_sock = -1; if (linux_br_get(brname, params->ifname) == 0) { wpa_printf(MSG_DEBUG, "nl80211: Interface %s is in bridge %s", params->ifname, brname); br_ifindex = if_nametoindex(brname); } else { brname[0] = '\0'; br_ifindex = 0; } drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int); drv->if_indices = drv->default_if_indices; for (i = 0; i < params->num_bridge; i++) { if (params->bridge[i]) { ifindex = if_nametoindex(params->bridge[i]); if (ifindex) add_ifidx(drv, ifindex); if (ifindex == br_ifindex) br_added = 1; } } if (!br_added && br_ifindex && (params->num_bridge == 0 || !params->bridge[0])) add_ifidx(drv, br_ifindex); /* start listening for EAPOL on the default AP interface */ add_ifidx(drv, drv->ifindex); if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0)) goto failed; if (params->bssid) { if (linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname, params->bssid)) goto failed; } if (wpa_driver_nl80211_set_mode(bss, drv->nlmode)) { wpa_printf(MSG_ERROR, "nl80211: Failed to set interface %s " "into AP mode", bss->ifname); goto failed; } if (params->num_bridge && params->bridge[0] && i802_check_bridge(drv, bss, params->bridge[0], params->ifname) < 0) goto failed; if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1)) goto failed; drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE)); if (drv->eapol_sock < 0) { perror("socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE)"); goto failed; } if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL)) { printf("Could not register read socket for eapol\n"); goto failed; } if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname, params->own_addr)) goto failed; memcpy(bss->addr, params->own_addr, ETH_ALEN); return bss; failed: wpa_driver_nl80211_deinit(bss); return NULL; } static void i802_deinit(void *priv) { wpa_driver_nl80211_deinit(priv); } #endif /* HOSTAPD */ static enum nl80211_iftype wpa_driver_nl80211_if_type( enum wpa_driver_if_type type) { switch (type) { case WPA_IF_STATION: return NL80211_IFTYPE_STATION; case WPA_IF_P2P_CLIENT: case WPA_IF_P2P_GROUP: return NL80211_IFTYPE_P2P_CLIENT; case WPA_IF_AP_VLAN: return NL80211_IFTYPE_AP_VLAN; case WPA_IF_AP_BSS: return NL80211_IFTYPE_AP; case WPA_IF_P2P_GO: return NL80211_IFTYPE_P2P_GO; } return -1; } #ifdef CONFIG_P2P static int nl80211_addr_in_use(struct nl80211_global *global, const u8 *addr) { struct wpa_driver_nl80211_data *drv; dl_list_for_each(drv, &global->interfaces, struct wpa_driver_nl80211_data, list) { if (os_memcmp(addr, drv->first_bss.addr, ETH_ALEN) == 0) return 1; } return 0; } static int nl80211_p2p_interface_addr(struct wpa_driver_nl80211_data *drv, u8 *new_addr) { unsigned int idx; if (!drv->global) return -1; os_memcpy(new_addr, drv->first_bss.addr, ETH_ALEN); for (idx = 0; idx < 64; idx++) { new_addr[0] = drv->first_bss.addr[0] | 0x02; new_addr[0] ^= idx << 2; if (!nl80211_addr_in_use(drv->global, new_addr)) break; } if (idx == 64) return -1; wpa_printf(MSG_DEBUG, "nl80211: Assigned new P2P Interface Address " MACSTR, MAC2STR(new_addr)); return 0; } #endif /* CONFIG_P2P */ static int wpa_driver_nl80211_if_add(void *priv, enum wpa_driver_if_type type, const char *ifname, const u8 *addr, void *bss_ctx, void **drv_priv, char *force_ifname, u8 *if_addr, const char *bridge) { struct i802_bss *bss = priv; struct wpa_driver_nl80211_data *drv = bss->drv; int ifidx; #ifdef HOSTAPD struct i802_bss *new_bss = NULL; if (type == WPA_IF_AP_BSS) { new_bss = os_zalloc(sizeof(*new_bss)); if (new_bss == NULL) return -1; } #endif /* HOSTAPD */ if (addr) os_memcpy(if_addr, addr, ETH_ALEN); ifidx = nl80211_create_iface(drv, ifname, wpa_driver_nl80211_if_type(type), addr, 0); if (ifidx < 0) { #ifdef HOSTAPD os_free(new_bss); #endif /* HOSTAPD */ return -1; } if (!addr && linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname, if_addr) < 0) { nl80211_remove_iface(drv, ifidx); return -1; } #ifdef CONFIG_P2P if (!addr && (type == WPA_IF_P2P_CLIENT || type == WPA_IF_P2P_GROUP || type == WPA_IF_P2P_GO)) { /* Enforce unique P2P Interface Address */ u8 new_addr[ETH_ALEN], own_addr[ETH_ALEN]; if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname, own_addr) < 0 || linux_get_ifhwaddr(drv->global->ioctl_sock, ifname, new_addr) < 0) { nl80211_remove_iface(drv, ifidx); return -1; } if (os_memcmp(own_addr, new_addr, ETH_ALEN) == 0) { wpa_printf(MSG_DEBUG, "nl80211: Allocate new address " "for P2P group interface"); if (nl80211_p2p_interface_addr(drv, new_addr) < 0) { nl80211_remove_iface(drv, ifidx); return -1; } if (linux_set_ifhwaddr(drv->global->ioctl_sock, ifname, new_addr) < 0) { nl80211_remove_iface(drv, ifidx); return -1; } } os_memcpy(if_addr, new_addr, ETH_ALEN); } #endif /* CONFIG_P2P */ #ifdef HOSTAPD if (bridge && i802_check_bridge(drv, new_bss, bridge, ifname) < 0) { wpa_printf(MSG_ERROR, "nl80211: Failed to add the new " "interface %s to a bridge %s", ifname, bridge); nl80211_remove_iface(drv, ifidx); os_free(new_bss); return -1; } if (type == WPA_IF_AP_BSS) { if (linux_set_iface_flags(drv->global->ioctl_sock, ifname, 1)) { nl80211_remove_iface(drv, ifidx); os_free(new_bss); return -1; } os_strlcpy(new_bss->ifname, ifname, IFNAMSIZ); os_memcpy(new_bss->addr, if_addr, ETH_ALEN); new_bss->ifindex = ifidx; new_bss->drv = drv; new_bss->next = drv->first_bss.next; new_bss->freq = drv->first_bss.freq; drv->first_bss.next = new_bss; if (drv_priv) *drv_priv = new_bss; nl80211_init_bss(new_bss); /* Subscribe management frames for this WPA_IF_AP_BSS */ if (nl80211_setup_ap(new_bss)) return -1; } #endif /* HOSTAPD */ if (drv->global) drv->global->if_add_ifindex = ifidx; return 0; } static int wpa_driver_nl80211_if_remove(void *priv, enum wpa_driver_if_type type, const char *ifname) { struct i802_bss *bss = priv; struct wpa_driver_nl80211_data *drv = bss->drv; int ifindex = if_nametoindex(ifname); wpa_printf(MSG_DEBUG, "nl80211: %s(type=%d ifname=%s) ifindex=%d", __func__, type, ifname, ifindex); if (ifindex <= 0) return -1; nl80211_remove_iface(drv, ifindex); #ifdef HOSTAPD if (type != WPA_IF_AP_BSS) return 0; if (bss->added_if_into_bridge) { if (linux_br_del_if(drv->global->ioctl_sock, bss->brname, bss->ifname) < 0) wpa_printf(MSG_INFO, "nl80211: Failed to remove " "interface %s from bridge %s: %s", bss->ifname, bss->brname, strerror(errno)); } if (bss->added_bridge) { if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0) wpa_printf(MSG_INFO, "nl80211: Failed to remove " "bridge %s: %s", bss->brname, strerror(errno)); } if (bss != &drv->first_bss) { struct i802_bss *tbss; for (tbss = &drv->first_bss; tbss; tbss = tbss->next) { if (tbss->next == bss) { tbss->next = bss->next; /* Unsubscribe management frames */ nl80211_teardown_ap(bss); nl80211_destroy_bss(bss); os_free(bss); bss = NULL; break; } } if (bss) wpa_printf(MSG_INFO, "nl80211: %s - could not find " "BSS %p in the list", __func__, bss); } #endif /* HOSTAPD */ return 0; } static int cookie_handler(struct nl_msg *msg, void *arg) { struct nlattr *tb[NL80211_ATTR_MAX + 1]; struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); u64 *cookie = arg; nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), genlmsg_attrlen(gnlh, 0), NULL); if (tb[NL80211_ATTR_COOKIE]) *cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]); return NL_SKIP; } static int nl80211_send_frame_cmd(struct i802_bss *bss, unsigned int freq, unsigned int wait, const u8 *buf, size_t buf_len, u64 *cookie_out, int no_cck, int no_ack, int offchanok) { struct wpa_driver_nl80211_data *drv = bss->drv; struct nl_msg *msg; u64 cookie; int ret = -1; msg = nlmsg_alloc(); if (!msg) return -1; wpa_printf(MSG_DEBUG, "nl80211: CMD_FRAME freq=%u wait=%u no_cck=%d " "no_ack=%d offchanok=%d", freq, wait, no_cck, no_ack, offchanok); nl80211_cmd(drv, msg, 0, NL80211_CMD_FRAME); NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq); if (wait) NLA_PUT_U32(msg, NL80211_ATTR_DURATION, wait); if (offchanok && (drv->capa.flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX)) NLA_PUT_FLAG(msg, NL80211_ATTR_OFFCHANNEL_TX_OK); if (no_cck) NLA_PUT_FLAG(msg, NL80211_ATTR_TX_NO_CCK_RATE); if (no_ack) NLA_PUT_FLAG(msg, NL80211_ATTR_DONT_WAIT_FOR_ACK); NLA_PUT(msg, NL80211_ATTR_FRAME, buf_len, buf); cookie = 0; ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie); msg = NULL; if (ret) { wpa_printf(MSG_DEBUG, "nl80211: Frame command failed: ret=%d " "(%s) (freq=%u wait=%u)", ret, strerror(-ret), freq, wait); goto nla_put_failure; } wpa_printf(MSG_DEBUG, "nl80211: Frame TX command accepted%s; " "cookie 0x%llx", no_ack ? " (no ACK)" : "", (long long unsigned int) cookie); if (cookie_out) *cookie_out = no_ack ? (u64) -1 : cookie; nla_put_failure: nlmsg_free(msg); return ret; } static int wpa_driver_nl80211_send_action(void *priv, unsigned int freq, unsigned int wait_time, const u8 *dst, const u8 *src, const u8 *bssid, const u8 *data, size_t data_len, int no_cck) { struct i802_bss *bss = priv; struct wpa_driver_nl80211_data *drv = bss->drv; int ret = -1; u8 *buf; struct ieee80211_hdr *hdr; wpa_printf(MSG_DEBUG, "nl80211: Send Action frame (ifindex=%d, " "freq=%u MHz wait=%d ms no_cck=%d)", drv->ifindex, freq, wait_time, no_cck); buf = os_zalloc(24 + data_len); if (buf == NULL) return ret; os_memcpy(buf + 24, data, data_len); hdr = (struct ieee80211_hdr *) buf; hdr->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_ACTION); os_memcpy(hdr->addr1, dst, ETH_ALEN); os_memcpy(hdr->addr2, src, ETH_ALEN); os_memcpy(hdr->addr3, bssid, ETH_ALEN); if (is_ap_interface(drv->nlmode)) ret = wpa_driver_nl80211_send_mlme_freq(priv, buf, 24 + data_len, 0, freq, no_cck, 1, wait_time); else ret = nl80211_send_frame_cmd(bss, freq, wait_time, buf, 24 + data_len, &drv->send_action_cookie, no_cck, 0, 1); os_free(buf); return ret; } static void wpa_driver_nl80211_send_action_cancel_wait(void *priv) { struct i802_bss *bss = priv; struct wpa_driver_nl80211_data *drv = bss->drv; struct nl_msg *msg; int ret; msg = nlmsg_alloc(); if (!msg) return; nl80211_cmd(drv, msg, 0, NL80211_CMD_FRAME_WAIT_CANCEL); NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->send_action_cookie); ret = send_and_recv_msgs(drv, msg, NULL, NULL); msg = NULL; if (ret) wpa_printf(MSG_DEBUG, "nl80211: wait cancel failed: ret=%d " "(%s)", ret, strerror(-ret)); nla_put_failure: nlmsg_free(msg); } static int wpa_driver_nl80211_remain_on_channel(void *priv, unsigned int freq, unsigned int duration) { struct i802_bss *bss = priv; struct wpa_driver_nl80211_data *drv = bss->drv; struct nl_msg *msg; int ret; u64 cookie; msg = nlmsg_alloc(); if (!msg) return -1; nl80211_cmd(drv, msg, 0, NL80211_CMD_REMAIN_ON_CHANNEL); NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq); NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration); cookie = 0; ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie); msg = NULL; if (ret == 0) { wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel cookie " "0x%llx for freq=%u MHz duration=%u", (long long unsigned int) cookie, freq, duration); drv->remain_on_chan_cookie = cookie; drv->pending_remain_on_chan = 1; return 0; } wpa_printf(MSG_DEBUG, "nl80211: Failed to request remain-on-channel " "(freq=%d duration=%u): %d (%s)", freq, duration, ret, strerror(-ret)); nla_put_failure: nlmsg_free(msg); return -1; } static int wpa_driver_nl80211_cancel_remain_on_channel(void *priv) { struct i802_bss *bss = priv; struct wpa_driver_nl80211_data *drv = bss->drv; struct nl_msg *msg; int ret; if (!drv->pending_remain_on_chan) { wpa_printf(MSG_DEBUG, "nl80211: No pending remain-on-channel " "to cancel"); return -1; } wpa_printf(MSG_DEBUG, "nl80211: Cancel remain-on-channel with cookie " "0x%llx", (long long unsigned int) drv->remain_on_chan_cookie); msg = nlmsg_alloc(); if (!msg) return -1; nl80211_cmd(drv, msg, 0, NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL); NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->remain_on_chan_cookie); ret = send_and_recv_msgs(drv, msg, NULL, NULL); msg = NULL; if (ret == 0) return 0; wpa_printf(MSG_DEBUG, "nl80211: Failed to cancel remain-on-channel: " "%d (%s)", ret, strerror(-ret)); nla_put_failure: nlmsg_free(msg); return -1; } static int wpa_driver_nl80211_probe_req_report(void *priv, int report) { struct i802_bss *bss = priv; struct wpa_driver_nl80211_data *drv = bss->drv; if (!report) { if (bss->nl_preq && drv->device_ap_sme && is_ap_interface(drv->nlmode)) { /* * Do not disable Probe Request reporting that was * enabled in nl80211_setup_ap(). */ wpa_printf(MSG_DEBUG, "nl80211: Skip disabling of " "Probe Request reporting nl_preq=%p while " "in AP mode", bss->nl_preq); } else if (bss->nl_preq) { wpa_printf(MSG_DEBUG, "nl80211: Disable Probe Request " "reporting nl_preq=%p", bss->nl_preq); eloop_unregister_read_sock( nl_socket_get_fd(bss->nl_preq)); nl_destroy_handles(&bss->nl_preq); } return 0; } if (bss->nl_preq) { wpa_printf(MSG_DEBUG, "nl80211: Probe Request reporting " "already on! nl_preq=%p", bss->nl_preq); return 0; } bss->nl_preq = nl_create_handle(drv->global->nl_cb, "preq"); if (bss->nl_preq == NULL) return -1; wpa_printf(MSG_DEBUG, "nl80211: Enable Probe Request " "reporting nl_preq=%p", bss->nl_preq); if (nl80211_register_frame(bss, bss->nl_preq, (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_PROBE_REQ << 4), NULL, 0) < 0) goto out_err; #if defined (LEGACY_STA_EVENTS) if (drv->nlmode != NL80211_IFTYPE_AP && drv->nlmode != NL80211_IFTYPE_P2P_GO) { wpa_printf(MSG_DEBUG, "nl80211: probe_req_report control only " "allowed in AP or P2P GO mode (iftype=%d)", drv->nlmode); goto done; } if (nl80211_register_frame(bss, bss->nl_preq, (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_ASSOC_REQ << 4), NULL, 0) < 0) { goto out_err; } if (nl80211_register_frame(bss, bss->nl_preq, (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_REASSOC_REQ << 4), NULL, 0) < 0) { goto out_err; } if (nl80211_register_frame(bss, bss->nl_preq, (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_DISASSOC << 4), NULL, 0) < 0) { goto out_err; } if (nl80211_register_frame(bss, bss->nl_preq, (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_DEAUTH << 4), NULL, 0) < 0) { goto out_err; } if (nl80211_register_frame(bss, bss->nl_preq, (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_ACTION << 4), NULL, 0) < 0) { goto out_err; } done: #endif /* ANDROID_P2P */ eloop_register_read_sock(nl_socket_get_fd(bss->nl_preq), wpa_driver_nl80211_event_receive, bss->nl_cb, bss->nl_preq); return 0; out_err: nl_destroy_handles(&bss->nl_preq); return -1; } static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv, int ifindex, int disabled) { struct nl_msg *msg; struct nlattr *bands, *band; int ret; msg = nlmsg_alloc(); if (!msg) return -1; nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_TX_BITRATE_MASK); NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex); bands = nla_nest_start(msg, NL80211_ATTR_TX_RATES); if (!bands) goto nla_put_failure; /* * Disable 2 GHz rates 1, 2, 5.5, 11 Mbps by masking out everything * else apart from 6, 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS * rates. All 5 GHz rates are left enabled. */ band = nla_nest_start(msg, NL80211_BAND_2GHZ); if (!band) goto nla_put_failure; if (disabled) { NLA_PUT(msg, NL80211_TXRATE_LEGACY, 8, "\x0c\x12\x18\x24\x30\x48\x60\x6c"); } nla_nest_end(msg, band); nla_nest_end(msg, bands); ret = send_and_recv_msgs(drv, msg, NULL, NULL); msg = NULL; if (ret) { wpa_printf(MSG_DEBUG, "nl80211: Set TX rates failed: ret=%d " "(%s)", ret, strerror(-ret)); } else drv->disabled_11b_rates = disabled; return ret; nla_put_failure: nlmsg_free(msg); return -1; } static int wpa_driver_nl80211_deinit_ap(void *priv) { struct i802_bss *bss = priv; struct wpa_driver_nl80211_data *drv = bss->drv; if (!is_ap_interface(drv->nlmode)) return -1; wpa_driver_nl80211_del_beacon(drv); return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION); } static int wpa_driver_nl80211_deinit_p2p_cli(void *priv) { struct i802_bss *bss = priv; struct wpa_driver_nl80211_data *drv = bss->drv; if (drv->nlmode != NL80211_IFTYPE_P2P_CLIENT) return -1; return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION); } static void wpa_driver_nl80211_resume(void *priv) { struct i802_bss *bss = priv; struct wpa_driver_nl80211_data *drv = bss->drv; if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1)) { wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface up on " "resume event"); } } static int nl80211_send_ft_action(void *priv, u8 action, const u8 *target_ap, const u8 *ies, size_t ies_len) { struct i802_bss *bss = priv; struct wpa_driver_nl80211_data *drv = bss->drv; int ret; u8 *data, *pos; size_t data_len; const u8 *own_addr = bss->addr; if (action != 1) { wpa_printf(MSG_ERROR, "nl80211: Unsupported send_ft_action " "action %d", action); return -1; } /* * Action frame payload: * Category[1] = 6 (Fast BSS Transition) * Action[1] = 1 (Fast BSS Transition Request) * STA Address * Target AP Address * FT IEs */ data_len = 2 + 2 * ETH_ALEN + ies_len; data = os_malloc(data_len); if (data == NULL) return -1; pos = data; *pos++ = 0x06; /* FT Action category */ *pos++ = action; os_memcpy(pos, own_addr, ETH_ALEN); pos += ETH_ALEN; os_memcpy(pos, target_ap, ETH_ALEN); pos += ETH_ALEN; os_memcpy(pos, ies, ies_len); ret = wpa_driver_nl80211_send_action(bss, drv->assoc_freq, 0, drv->bssid, own_addr, drv->bssid, data, data_len, 0); os_free(data); return ret; } static int nl80211_signal_monitor(void *priv, int threshold, int hysteresis) { struct i802_bss *bss = priv; struct wpa_driver_nl80211_data *drv = bss->drv; struct nl_msg *msg, *cqm = NULL; int ret = -1; wpa_printf(MSG_DEBUG, "nl80211: Signal monitor threshold=%d " "hysteresis=%d", threshold, hysteresis); msg = nlmsg_alloc(); if (!msg) return -1; nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_CQM); NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); cqm = nlmsg_alloc(); if (cqm == NULL) goto nla_put_failure; NLA_PUT_U32(cqm, NL80211_ATTR_CQM_RSSI_THOLD, threshold); NLA_PUT_U32(cqm, NL80211_ATTR_CQM_RSSI_HYST, hysteresis); if (nla_put_nested(msg, NL80211_ATTR_CQM, cqm) < 0) goto nla_put_failure; ret = send_and_recv_msgs(drv, msg, NULL, NULL); msg = NULL; nla_put_failure: nlmsg_free(cqm); nlmsg_free(msg); return ret; } static int nl80211_signal_poll(void *priv, struct wpa_signal_info *si) { struct i802_bss *bss = priv; struct wpa_driver_nl80211_data *drv = bss->drv; int res; os_memset(si, 0, sizeof(*si)); res = nl80211_get_link_signal(drv, si); if (res != 0) return res; return nl80211_get_link_noise(drv, si); } static int wpa_driver_nl80211_shared_freq(void *priv) { struct i802_bss *bss = priv; struct wpa_driver_nl80211_data *drv = bss->drv; struct wpa_driver_nl80211_data *driver; int freq = 0; /* * If the same PHY is in connected state with some other interface, * then retrieve the assoc freq. */ wpa_printf(MSG_DEBUG, "nl80211: Get shared freq for PHY %s", drv->phyname); dl_list_for_each(driver, &drv->global->interfaces, struct wpa_driver_nl80211_data, list) { if (drv == driver || os_strcmp(drv->phyname, driver->phyname) != 0 || #ifdef ANDROID_P2P (!driver->associated && !is_ap_interface(driver->nlmode))) #else !driver->associated) #endif continue; wpa_printf(MSG_DEBUG, "nl80211: Found a match for PHY %s - %s " MACSTR, driver->phyname, driver->first_bss.ifname, MAC2STR(driver->first_bss.addr)); if (is_ap_interface(driver->nlmode)) freq = driver->first_bss.freq; else freq = nl80211_get_assoc_freq(driver); wpa_printf(MSG_DEBUG, "nl80211: Shared freq for PHY %s: %d", drv->phyname, freq); } if (!freq) wpa_printf(MSG_DEBUG, "nl80211: No shared interface for " "PHY (%s) in associated state", drv->phyname); return freq; } static int nl80211_send_frame(void *priv, const u8 *data, size_t data_len, int encrypt) { struct i802_bss *bss = priv; return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt, 0, 0, 0, 0, 0); } static int nl80211_set_param(void *priv, const char *param) { wpa_printf(MSG_DEBUG, "nl80211: driver param='%s'", param); if (param == NULL) return 0; #ifdef CONFIG_P2P if (os_strstr(param, "use_p2p_group_interface=1")) { struct i802_bss *bss = priv; struct wpa_driver_nl80211_data *drv = bss->drv; wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group " "interface"); drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT; drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P; } #ifdef ANDROID_P2P if(os_strstr(param, "use_multi_chan_concurrent=1")) { struct i802_bss *bss = priv; struct wpa_driver_nl80211_data *drv = bss->drv; wpa_printf(MSG_DEBUG, "nl80211: Use Multi channel " "concurrency"); drv->capa.flags |= WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT; } #endif #endif /* CONFIG_P2P */ return 0; } static void * nl80211_global_init(void) { struct nl80211_global *global; struct netlink_config *cfg; global = os_zalloc(sizeof(*global)); if (global == NULL) return NULL; global->ioctl_sock = -1; dl_list_init(&global->interfaces); global->if_add_ifindex = -1; cfg = os_zalloc(sizeof(*cfg)); if (cfg == NULL) goto err; cfg->ctx = global; cfg->newlink_cb = wpa_driver_nl80211_event_rtm_newlink; cfg->dellink_cb = wpa_driver_nl80211_event_rtm_dellink; global->netlink = netlink_init(cfg); if (global->netlink == NULL) { os_free(cfg); goto err; } if (wpa_driver_nl80211_init_nl_global(global) < 0) goto err; global->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0); if (global->ioctl_sock < 0) { perror("socket(PF_INET,SOCK_DGRAM)"); goto err; } return global; err: nl80211_global_deinit(global); return NULL; } static void nl80211_global_deinit(void *priv) { struct nl80211_global *global = priv; if (global == NULL) return; if (!dl_list_empty(&global->interfaces)) { wpa_printf(MSG_ERROR, "nl80211: %u interface(s) remain at " "nl80211_global_deinit", dl_list_len(&global->interfaces)); } if (global->netlink) netlink_deinit(global->netlink); nl_destroy_handles(&global->nl); if (global->nl_event) { eloop_unregister_read_sock( nl_socket_get_fd(global->nl_event)); nl_destroy_handles(&global->nl_event); } nl_cb_put(global->nl_cb); if (global->ioctl_sock >= 0) close(global->ioctl_sock); os_free(global); } static const char * nl80211_get_radio_name(void *priv) { struct i802_bss *bss = priv; struct wpa_driver_nl80211_data *drv = bss->drv; return drv->phyname; } static int nl80211_pmkid(struct i802_bss *bss, int cmd, const u8 *bssid, const u8 *pmkid) { struct nl_msg *msg; msg = nlmsg_alloc(); if (!msg) return -ENOMEM; nl80211_cmd(bss->drv, msg, 0, cmd); NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)); if (pmkid) NLA_PUT(msg, NL80211_ATTR_PMKID, 16, pmkid); if (bssid) NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid); return send_and_recv_msgs(bss->drv, msg, NULL, NULL); nla_put_failure: nlmsg_free(msg); return -ENOBUFS; } static int nl80211_add_pmkid(void *priv, const u8 *bssid, const u8 *pmkid) { struct i802_bss *bss = priv; wpa_printf(MSG_DEBUG, "nl80211: Add PMKID for " MACSTR, MAC2STR(bssid)); return nl80211_pmkid(bss, NL80211_CMD_SET_PMKSA, bssid, pmkid); } static int nl80211_remove_pmkid(void *priv, const u8 *bssid, const u8 *pmkid) { struct i802_bss *bss = priv; wpa_printf(MSG_DEBUG, "nl80211: Delete PMKID for " MACSTR, MAC2STR(bssid)); return nl80211_pmkid(bss, NL80211_CMD_DEL_PMKSA, bssid, pmkid); } static int nl80211_flush_pmkid(void *priv) { struct i802_bss *bss = priv; wpa_printf(MSG_DEBUG, "nl80211: Flush PMKIDs"); return nl80211_pmkid(bss, NL80211_CMD_FLUSH_PMKSA, NULL, NULL); } static void nl80211_set_rekey_info(void *priv, const u8 *kek, const u8 *kck, const u8 *replay_ctr) { struct i802_bss *bss = priv; struct wpa_driver_nl80211_data *drv = bss->drv; struct nlattr *replay_nested; struct nl_msg *msg; msg = nlmsg_alloc(); if (!msg) return; nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_REKEY_OFFLOAD); NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); replay_nested = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA); if (!replay_nested) goto nla_put_failure; NLA_PUT(msg, NL80211_REKEY_DATA_KEK, NL80211_KEK_LEN, kek); NLA_PUT(msg, NL80211_REKEY_DATA_KCK, NL80211_KCK_LEN, kck); NLA_PUT(msg, NL80211_REKEY_DATA_REPLAY_CTR, NL80211_REPLAY_CTR_LEN, replay_ctr); nla_nest_end(msg, replay_nested); send_and_recv_msgs(drv, msg, NULL, NULL); return; nla_put_failure: nlmsg_free(msg); } static void nl80211_send_null_frame(struct i802_bss *bss, const u8 *own_addr, const u8 *addr, int qos) { /* send data frame to poll STA and check whether * this frame is ACKed */ struct { struct ieee80211_hdr hdr; u16 qos_ctl; } STRUCT_PACKED nulldata; size_t size; /* Send data frame to poll STA and check whether this frame is ACKed */ os_memset(&nulldata, 0, sizeof(nulldata)); if (qos) { nulldata.hdr.frame_control = IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_QOS_NULL); size = sizeof(nulldata); } else { nulldata.hdr.frame_control = IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_NULLFUNC); size = sizeof(struct ieee80211_hdr); } nulldata.hdr.frame_control |= host_to_le16(WLAN_FC_FROMDS); os_memcpy(nulldata.hdr.IEEE80211_DA_FROMDS, addr, ETH_ALEN); os_memcpy(nulldata.hdr.IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN); os_memcpy(nulldata.hdr.IEEE80211_SA_FROMDS, own_addr, ETH_ALEN); if (wpa_driver_nl80211_send_mlme(bss, (u8 *) &nulldata, size, 0) < 0) wpa_printf(MSG_DEBUG, "nl80211_send_null_frame: Failed to " "send poll frame"); } static void nl80211_poll_client(void *priv, const u8 *own_addr, const u8 *addr, int qos) { struct i802_bss *bss = priv; struct wpa_driver_nl80211_data *drv = bss->drv; struct nl_msg *msg; if (!drv->poll_command_supported) { nl80211_send_null_frame(bss, own_addr, addr, qos); return; } msg = nlmsg_alloc(); if (!msg) return; nl80211_cmd(drv, msg, 0, NL80211_CMD_PROBE_CLIENT); NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); send_and_recv_msgs(drv, msg, NULL, NULL); return; nla_put_failure: nlmsg_free(msg); } static int nl80211_set_power_save(struct i802_bss *bss, int enabled) { struct nl_msg *msg; msg = nlmsg_alloc(); if (!msg) return -ENOMEM; nl80211_cmd(bss->drv, msg, 0, NL80211_CMD_SET_POWER_SAVE); NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); NLA_PUT_U32(msg, NL80211_ATTR_PS_STATE, enabled ? NL80211_PS_ENABLED : NL80211_PS_DISABLED); return send_and_recv_msgs(bss->drv, msg, NULL, NULL); nla_put_failure: nlmsg_free(msg); return -ENOBUFS; } static int nl80211_set_p2p_powersave(void *priv, int legacy_ps, int opp_ps, int ctwindow) { struct i802_bss *bss = priv; wpa_printf(MSG_DEBUG, "nl80211: set_p2p_powersave (legacy_ps=%d " "opp_ps=%d ctwindow=%d)", legacy_ps, opp_ps, ctwindow); if (opp_ps != -1 || ctwindow != -1) #ifdef ANDROID_P2P wpa_driver_set_p2p_ps(priv, legacy_ps, opp_ps, ctwindow); #else return -1; /* Not yet supported */ #endif if (legacy_ps == -1) return 0; if (legacy_ps != 0 && legacy_ps != 1) return -1; /* Not yet supported */ return nl80211_set_power_save(bss, legacy_ps); } #ifdef CONFIG_TDLS static int nl80211_send_tdls_mgmt(void *priv, const u8 *dst, u8 action_code, u8 dialog_token, u16 status_code, const u8 *buf, size_t len) { struct i802_bss *bss = priv; struct wpa_driver_nl80211_data *drv = bss->drv; struct nl_msg *msg; if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) return -EOPNOTSUPP; if (!dst) return -EINVAL; msg = nlmsg_alloc(); if (!msg) return -ENOMEM; nl80211_cmd(drv, msg, 0, NL80211_CMD_TDLS_MGMT); NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, dst); NLA_PUT_U8(msg, NL80211_ATTR_TDLS_ACTION, action_code); NLA_PUT_U8(msg, NL80211_ATTR_TDLS_DIALOG_TOKEN, dialog_token); NLA_PUT_U16(msg, NL80211_ATTR_STATUS_CODE, status_code); NLA_PUT(msg, NL80211_ATTR_IE, len, buf); return send_and_recv_msgs(drv, msg, NULL, NULL); nla_put_failure: nlmsg_free(msg); return -ENOBUFS; } static int nl80211_tdls_oper(void *priv, enum tdls_oper oper, const u8 *peer) { struct i802_bss *bss = priv; struct wpa_driver_nl80211_data *drv = bss->drv; struct nl_msg *msg; enum nl80211_tdls_operation nl80211_oper; if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) return -EOPNOTSUPP; switch (oper) { case TDLS_DISCOVERY_REQ: nl80211_oper = NL80211_TDLS_DISCOVERY_REQ; break; case TDLS_SETUP: nl80211_oper = NL80211_TDLS_SETUP; break; case TDLS_TEARDOWN: nl80211_oper = NL80211_TDLS_TEARDOWN; break; case TDLS_ENABLE_LINK: nl80211_oper = NL80211_TDLS_ENABLE_LINK; break; case TDLS_DISABLE_LINK: nl80211_oper = NL80211_TDLS_DISABLE_LINK; break; case TDLS_ENABLE: return 0; case TDLS_DISABLE: return 0; default: return -EINVAL; } msg = nlmsg_alloc(); if (!msg) return -ENOMEM; nl80211_cmd(drv, msg, 0, NL80211_CMD_TDLS_OPER); NLA_PUT_U8(msg, NL80211_ATTR_TDLS_OPERATION, nl80211_oper); NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, peer); return send_and_recv_msgs(drv, msg, NULL, NULL); nla_put_failure: nlmsg_free(msg); return -ENOBUFS; } #endif /* CONFIG TDLS */ #ifdef ANDROID typedef struct android_wifi_priv_cmd { char *buf; int used_len; int total_len; } android_wifi_priv_cmd; static int drv_errors = 0; static void wpa_driver_send_hang_msg(struct wpa_driver_nl80211_data *drv) { drv_errors++; if (drv_errors > DRV_NUMBER_SEQUENTIAL_ERRORS) { drv_errors = 0; wpa_msg(drv->ctx, MSG_INFO, WPA_EVENT_DRIVER_STATE "HANGED"); } } static int android_priv_cmd(struct i802_bss *bss, const char *cmd) { struct wpa_driver_nl80211_data *drv = bss->drv; struct ifreq ifr; android_wifi_priv_cmd priv_cmd; char buf[MAX_DRV_CMD_SIZE]; int ret; os_memset(&ifr, 0, sizeof(ifr)); os_memset(&priv_cmd, 0, sizeof(priv_cmd)); os_strlcpy(ifr.ifr_name, bss->ifname, IFNAMSIZ); os_memset(buf, 0, sizeof(buf)); os_strlcpy(buf, cmd, sizeof(buf)); priv_cmd.buf = buf; priv_cmd.used_len = sizeof(buf); priv_cmd.total_len = sizeof(buf); ifr.ifr_data = &priv_cmd; ret = ioctl(drv->global->ioctl_sock, SIOCDEVPRIVATE + 1, &ifr); if (ret < 0) { wpa_printf(MSG_ERROR, "%s: failed to issue private commands", __func__); wpa_driver_send_hang_msg(drv); return ret; } drv_errors = 0; return 0; } static int android_pno_start(struct i802_bss *bss, struct wpa_driver_scan_params *params) { struct wpa_driver_nl80211_data *drv = bss->drv; struct ifreq ifr; android_wifi_priv_cmd priv_cmd; int ret = 0, i = 0, bp; char buf[WEXT_PNO_MAX_COMMAND_SIZE]; bp = WEXT_PNOSETUP_HEADER_SIZE; os_memcpy(buf, WEXT_PNOSETUP_HEADER, bp); buf[bp++] = WEXT_PNO_TLV_PREFIX; buf[bp++] = WEXT_PNO_TLV_VERSION; buf[bp++] = WEXT_PNO_TLV_SUBVERSION; buf[bp++] = WEXT_PNO_TLV_RESERVED; while (i < WEXT_PNO_AMOUNT && (size_t) i < params->num_ssids) { /* Check that there is enough space needed for 1 more SSID, the * other sections and null termination */ if ((bp + WEXT_PNO_SSID_HEADER_SIZE + MAX_SSID_LEN + WEXT_PNO_NONSSID_SECTIONS_SIZE + 1) >= (int) sizeof(buf)) break; wpa_hexdump_ascii(MSG_DEBUG, "For PNO Scan", params->ssids[i].ssid, params->ssids[i].ssid_len); buf[bp++] = WEXT_PNO_SSID_SECTION; buf[bp++] = params->ssids[i].ssid_len; os_memcpy(&buf[bp], params->ssids[i].ssid, params->ssids[i].ssid_len); bp += params->ssids[i].ssid_len; i++; } buf[bp++] = WEXT_PNO_SCAN_INTERVAL_SECTION; os_snprintf(&buf[bp], WEXT_PNO_SCAN_INTERVAL_LENGTH + 1, "%x", WEXT_PNO_SCAN_INTERVAL); bp += WEXT_PNO_SCAN_INTERVAL_LENGTH; buf[bp++] = WEXT_PNO_REPEAT_SECTION; os_snprintf(&buf[bp], WEXT_PNO_REPEAT_LENGTH + 1, "%x", WEXT_PNO_REPEAT); bp += WEXT_PNO_REPEAT_LENGTH; buf[bp++] = WEXT_PNO_MAX_REPEAT_SECTION; os_snprintf(&buf[bp], WEXT_PNO_MAX_REPEAT_LENGTH + 1, "%x", WEXT_PNO_MAX_REPEAT); bp += WEXT_PNO_MAX_REPEAT_LENGTH + 1; memset(&ifr, 0, sizeof(ifr)); memset(&priv_cmd, 0, sizeof(priv_cmd)); os_strncpy(ifr.ifr_name, bss->ifname, IFNAMSIZ); priv_cmd.buf = buf; priv_cmd.used_len = bp; priv_cmd.total_len = bp; ifr.ifr_data = &priv_cmd; ret = ioctl(drv->global->ioctl_sock, SIOCDEVPRIVATE + 1, &ifr); if (ret < 0) { wpa_printf(MSG_ERROR, "ioctl[SIOCSIWPRIV] (pnosetup): %d", ret); wpa_driver_send_hang_msg(drv); return ret; } drv_errors = 0; return android_priv_cmd(bss, "PNOFORCE 1"); } static int android_pno_stop(struct i802_bss *bss) { return android_priv_cmd(bss, "PNOFORCE 0"); } #endif /* ANDROID */ const struct wpa_driver_ops wpa_driver_nl80211_ops = { .name = "nl80211", .desc = "Linux nl80211/cfg80211", .get_bssid = wpa_driver_nl80211_get_bssid, .get_ssid = wpa_driver_nl80211_get_ssid, .set_key = wpa_driver_nl80211_set_key, .scan2 = wpa_driver_nl80211_scan, .sched_scan = wpa_driver_nl80211_sched_scan, .stop_sched_scan = wpa_driver_nl80211_stop_sched_scan, .get_scan_results2 = wpa_driver_nl80211_get_scan_results, .deauthenticate = wpa_driver_nl80211_deauthenticate, .disassociate = wpa_driver_nl80211_disassociate, .authenticate = wpa_driver_nl80211_authenticate, .associate = wpa_driver_nl80211_associate, .global_init = nl80211_global_init, .global_deinit = nl80211_global_deinit, .init2 = wpa_driver_nl80211_init, .deinit = wpa_driver_nl80211_deinit, .get_capa = wpa_driver_nl80211_get_capa, .set_operstate = wpa_driver_nl80211_set_operstate, .set_supp_port = wpa_driver_nl80211_set_supp_port, .set_country = wpa_driver_nl80211_set_country, .set_ap = wpa_driver_nl80211_set_ap, .if_add = wpa_driver_nl80211_if_add, .if_remove = wpa_driver_nl80211_if_remove, .send_mlme = wpa_driver_nl80211_send_mlme, .get_hw_feature_data = wpa_driver_nl80211_get_hw_feature_data, .sta_add = wpa_driver_nl80211_sta_add, .sta_remove = wpa_driver_nl80211_sta_remove, .hapd_send_eapol = wpa_driver_nl80211_hapd_send_eapol, .sta_set_flags = wpa_driver_nl80211_sta_set_flags, #ifdef HOSTAPD .hapd_init = i802_init, .hapd_deinit = i802_deinit, .set_wds_sta = i802_set_wds_sta, #endif /* HOSTAPD */ #if defined(HOSTAPD) || defined(CONFIG_AP) .get_seqnum = i802_get_seqnum, .flush = i802_flush, .get_inact_sec = i802_get_inact_sec, .sta_clear_stats = i802_sta_clear_stats, .set_rts = i802_set_rts, .set_frag = i802_set_frag, .set_tx_queue_params = i802_set_tx_queue_params, .set_sta_vlan = i802_set_sta_vlan, .sta_deauth = i802_sta_deauth, .sta_disassoc = i802_sta_disassoc, #endif /* HOSTAPD || CONFIG_AP */ .read_sta_data = i802_read_sta_data, .set_freq = i802_set_freq, .send_action = wpa_driver_nl80211_send_action, .send_action_cancel_wait = wpa_driver_nl80211_send_action_cancel_wait, .remain_on_channel = wpa_driver_nl80211_remain_on_channel, .cancel_remain_on_channel = wpa_driver_nl80211_cancel_remain_on_channel, .probe_req_report = wpa_driver_nl80211_probe_req_report, .deinit_ap = wpa_driver_nl80211_deinit_ap, .deinit_p2p_cli = wpa_driver_nl80211_deinit_p2p_cli, .resume = wpa_driver_nl80211_resume, .send_ft_action = nl80211_send_ft_action, .signal_monitor = nl80211_signal_monitor, .signal_poll = nl80211_signal_poll, .send_frame = nl80211_send_frame, .shared_freq = wpa_driver_nl80211_shared_freq, .set_param = nl80211_set_param, .get_radio_name = nl80211_get_radio_name, .add_pmkid = nl80211_add_pmkid, .remove_pmkid = nl80211_remove_pmkid, .flush_pmkid = nl80211_flush_pmkid, .set_rekey_info = nl80211_set_rekey_info, .poll_client = nl80211_poll_client, .set_p2p_powersave = nl80211_set_p2p_powersave, #ifdef CONFIG_TDLS .send_tdls_mgmt = nl80211_send_tdls_mgmt, .tdls_oper = nl80211_tdls_oper, #endif /* CONFIG_TDLS */ #ifdef ANDROID_P2P .set_noa = wpa_driver_set_p2p_noa, .get_noa = wpa_driver_get_p2p_noa, .set_ap_wps_ie = wpa_driver_set_ap_wps_p2p_ie, #endif #ifdef ANDROID .driver_cmd = wpa_driver_nl80211_driver_cmd, #endif };