From f0b9ad5690ed96f95d91ca19fba2fb2894bae6f0 Mon Sep 17 00:00:00 2001 From: Wolfgang Wiedmeyer Date: Sat, 24 Oct 2015 02:08:33 +0200 Subject: update network code --- net/wireless_ath/wext-core.c | 1123 ------------------------------------------ 1 file changed, 1123 deletions(-) delete mode 100755 net/wireless_ath/wext-core.c (limited to 'net/wireless_ath/wext-core.c') diff --git a/net/wireless_ath/wext-core.c b/net/wireless_ath/wext-core.c deleted file mode 100755 index ae45584..0000000 --- a/net/wireless_ath/wext-core.c +++ /dev/null @@ -1,1123 +0,0 @@ -/* - * This file implement the Wireless Extensions core API. - * - * Authors : Jean Tourrilhes - HPL - - * Copyright (c) 1997-2007 Jean Tourrilhes, All Rights Reserved. - * Copyright 2009 Johannes Berg - * - * (As all part of the Linux kernel, this file is GPL) - */ -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -typedef int (*wext_ioctl_func)(struct net_device *, struct iwreq *, - unsigned int, struct iw_request_info *, - iw_handler); - - -/* - * Meta-data about all the standard Wireless Extension request we - * know about. - */ -static const struct iw_ioctl_description standard_ioctl[] = { - [IW_IOCTL_IDX(SIOCSIWCOMMIT)] = { - .header_type = IW_HEADER_TYPE_NULL, - }, - [IW_IOCTL_IDX(SIOCGIWNAME)] = { - .header_type = IW_HEADER_TYPE_CHAR, - .flags = IW_DESCR_FLAG_DUMP, - }, - [IW_IOCTL_IDX(SIOCSIWNWID)] = { - .header_type = IW_HEADER_TYPE_PARAM, - .flags = IW_DESCR_FLAG_EVENT, - }, - [IW_IOCTL_IDX(SIOCGIWNWID)] = { - .header_type = IW_HEADER_TYPE_PARAM, - .flags = IW_DESCR_FLAG_DUMP, - }, - [IW_IOCTL_IDX(SIOCSIWFREQ)] = { - .header_type = IW_HEADER_TYPE_FREQ, - .flags = IW_DESCR_FLAG_EVENT, - }, - [IW_IOCTL_IDX(SIOCGIWFREQ)] = { - .header_type = IW_HEADER_TYPE_FREQ, - .flags = IW_DESCR_FLAG_DUMP, - }, - [IW_IOCTL_IDX(SIOCSIWMODE)] = { - .header_type = IW_HEADER_TYPE_UINT, - .flags = IW_DESCR_FLAG_EVENT, - }, - [IW_IOCTL_IDX(SIOCGIWMODE)] = { - .header_type = IW_HEADER_TYPE_UINT, - .flags = IW_DESCR_FLAG_DUMP, - }, - [IW_IOCTL_IDX(SIOCSIWSENS)] = { - .header_type = IW_HEADER_TYPE_PARAM, - }, - [IW_IOCTL_IDX(SIOCGIWSENS)] = { - .header_type = IW_HEADER_TYPE_PARAM, - }, - [IW_IOCTL_IDX(SIOCSIWRANGE)] = { - .header_type = IW_HEADER_TYPE_NULL, - }, - [IW_IOCTL_IDX(SIOCGIWRANGE)] = { - .header_type = IW_HEADER_TYPE_POINT, - .token_size = 1, - .max_tokens = sizeof(struct iw_range), - .flags = IW_DESCR_FLAG_DUMP, - }, - [IW_IOCTL_IDX(SIOCSIWPRIV)] = { - .header_type = IW_HEADER_TYPE_NULL, - }, - [IW_IOCTL_IDX(SIOCGIWPRIV)] = { /* (handled directly by us) */ - .header_type = IW_HEADER_TYPE_POINT, - .token_size = sizeof(struct iw_priv_args), - .max_tokens = 16, - .flags = IW_DESCR_FLAG_NOMAX, - }, - [IW_IOCTL_IDX(SIOCSIWSTATS)] = { - .header_type = IW_HEADER_TYPE_NULL, - }, - [IW_IOCTL_IDX(SIOCGIWSTATS)] = { /* (handled directly by us) */ - .header_type = IW_HEADER_TYPE_POINT, - .token_size = 1, - .max_tokens = sizeof(struct iw_statistics), - .flags = IW_DESCR_FLAG_DUMP, - }, - [IW_IOCTL_IDX(SIOCSIWSPY)] = { - .header_type = IW_HEADER_TYPE_POINT, - .token_size = sizeof(struct sockaddr), - .max_tokens = IW_MAX_SPY, - }, - [IW_IOCTL_IDX(SIOCGIWSPY)] = { - .header_type = IW_HEADER_TYPE_POINT, - .token_size = sizeof(struct sockaddr) + - sizeof(struct iw_quality), - .max_tokens = IW_MAX_SPY, - }, - [IW_IOCTL_IDX(SIOCSIWTHRSPY)] = { - .header_type = IW_HEADER_TYPE_POINT, - .token_size = sizeof(struct iw_thrspy), - .min_tokens = 1, - .max_tokens = 1, - }, - [IW_IOCTL_IDX(SIOCGIWTHRSPY)] = { - .header_type = IW_HEADER_TYPE_POINT, - .token_size = sizeof(struct iw_thrspy), - .min_tokens = 1, - .max_tokens = 1, - }, - [IW_IOCTL_IDX(SIOCSIWAP)] = { - .header_type = IW_HEADER_TYPE_ADDR, - }, - [IW_IOCTL_IDX(SIOCGIWAP)] = { - .header_type = IW_HEADER_TYPE_ADDR, - .flags = IW_DESCR_FLAG_DUMP, - }, - [IW_IOCTL_IDX(SIOCSIWMLME)] = { - .header_type = IW_HEADER_TYPE_POINT, - .token_size = 1, - .min_tokens = sizeof(struct iw_mlme), - .max_tokens = sizeof(struct iw_mlme), - }, - [IW_IOCTL_IDX(SIOCGIWAPLIST)] = { - .header_type = IW_HEADER_TYPE_POINT, - .token_size = sizeof(struct sockaddr) + - sizeof(struct iw_quality), - .max_tokens = IW_MAX_AP, - .flags = IW_DESCR_FLAG_NOMAX, - }, - [IW_IOCTL_IDX(SIOCSIWSCAN)] = { - .header_type = IW_HEADER_TYPE_POINT, - .token_size = 1, - .min_tokens = 0, - .max_tokens = sizeof(struct iw_scan_req), - }, - [IW_IOCTL_IDX(SIOCGIWSCAN)] = { - .header_type = IW_HEADER_TYPE_POINT, - .token_size = 1, - .max_tokens = IW_SCAN_MAX_DATA, - .flags = IW_DESCR_FLAG_NOMAX, - }, - [IW_IOCTL_IDX(SIOCSIWESSID)] = { - .header_type = IW_HEADER_TYPE_POINT, - .token_size = 1, - .max_tokens = IW_ESSID_MAX_SIZE, - .flags = IW_DESCR_FLAG_EVENT, - }, - [IW_IOCTL_IDX(SIOCGIWESSID)] = { - .header_type = IW_HEADER_TYPE_POINT, - .token_size = 1, - .max_tokens = IW_ESSID_MAX_SIZE, - .flags = IW_DESCR_FLAG_DUMP, - }, - [IW_IOCTL_IDX(SIOCSIWNICKN)] = { - .header_type = IW_HEADER_TYPE_POINT, - .token_size = 1, - .max_tokens = IW_ESSID_MAX_SIZE, - }, - [IW_IOCTL_IDX(SIOCGIWNICKN)] = { - .header_type = IW_HEADER_TYPE_POINT, - .token_size = 1, - .max_tokens = IW_ESSID_MAX_SIZE, - }, - [IW_IOCTL_IDX(SIOCSIWRATE)] = { - .header_type = IW_HEADER_TYPE_PARAM, - }, - [IW_IOCTL_IDX(SIOCGIWRATE)] = { - .header_type = IW_HEADER_TYPE_PARAM, - }, - [IW_IOCTL_IDX(SIOCSIWRTS)] = { - .header_type = IW_HEADER_TYPE_PARAM, - }, - [IW_IOCTL_IDX(SIOCGIWRTS)] = { - .header_type = IW_HEADER_TYPE_PARAM, - }, - [IW_IOCTL_IDX(SIOCSIWFRAG)] = { - .header_type = IW_HEADER_TYPE_PARAM, - }, - [IW_IOCTL_IDX(SIOCGIWFRAG)] = { - .header_type = IW_HEADER_TYPE_PARAM, - }, - [IW_IOCTL_IDX(SIOCSIWTXPOW)] = { - .header_type = IW_HEADER_TYPE_PARAM, - }, - [IW_IOCTL_IDX(SIOCGIWTXPOW)] = { - .header_type = IW_HEADER_TYPE_PARAM, - }, - [IW_IOCTL_IDX(SIOCSIWRETRY)] = { - .header_type = IW_HEADER_TYPE_PARAM, - }, - [IW_IOCTL_IDX(SIOCGIWRETRY)] = { - .header_type = IW_HEADER_TYPE_PARAM, - }, - [IW_IOCTL_IDX(SIOCSIWENCODE)] = { - .header_type = IW_HEADER_TYPE_POINT, - .token_size = 1, - .max_tokens = IW_ENCODING_TOKEN_MAX, - .flags = IW_DESCR_FLAG_EVENT | IW_DESCR_FLAG_RESTRICT, - }, - [IW_IOCTL_IDX(SIOCGIWENCODE)] = { - .header_type = IW_HEADER_TYPE_POINT, - .token_size = 1, - .max_tokens = IW_ENCODING_TOKEN_MAX, - .flags = IW_DESCR_FLAG_DUMP | IW_DESCR_FLAG_RESTRICT, - }, - [IW_IOCTL_IDX(SIOCSIWPOWER)] = { - .header_type = IW_HEADER_TYPE_PARAM, - }, - [IW_IOCTL_IDX(SIOCGIWPOWER)] = { - .header_type = IW_HEADER_TYPE_PARAM, - }, - [IW_IOCTL_IDX(SIOCSIWGENIE)] = { - .header_type = IW_HEADER_TYPE_POINT, - .token_size = 1, - .max_tokens = IW_GENERIC_IE_MAX, - }, - [IW_IOCTL_IDX(SIOCGIWGENIE)] = { - .header_type = IW_HEADER_TYPE_POINT, - .token_size = 1, - .max_tokens = IW_GENERIC_IE_MAX, - }, - [IW_IOCTL_IDX(SIOCSIWAUTH)] = { - .header_type = IW_HEADER_TYPE_PARAM, - }, - [IW_IOCTL_IDX(SIOCGIWAUTH)] = { - .header_type = IW_HEADER_TYPE_PARAM, - }, - [IW_IOCTL_IDX(SIOCSIWENCODEEXT)] = { - .header_type = IW_HEADER_TYPE_POINT, - .token_size = 1, - .min_tokens = sizeof(struct iw_encode_ext), - .max_tokens = sizeof(struct iw_encode_ext) + - IW_ENCODING_TOKEN_MAX, - }, - [IW_IOCTL_IDX(SIOCGIWENCODEEXT)] = { - .header_type = IW_HEADER_TYPE_POINT, - .token_size = 1, - .min_tokens = sizeof(struct iw_encode_ext), - .max_tokens = sizeof(struct iw_encode_ext) + - IW_ENCODING_TOKEN_MAX, - }, - [IW_IOCTL_IDX(SIOCSIWPMKSA)] = { - .header_type = IW_HEADER_TYPE_POINT, - .token_size = 1, - .min_tokens = sizeof(struct iw_pmksa), - .max_tokens = sizeof(struct iw_pmksa), - }, -}; -static const unsigned standard_ioctl_num = ARRAY_SIZE(standard_ioctl); - -/* - * Meta-data about all the additional standard Wireless Extension events - * we know about. - */ -static const struct iw_ioctl_description standard_event[] = { - [IW_EVENT_IDX(IWEVTXDROP)] = { - .header_type = IW_HEADER_TYPE_ADDR, - }, - [IW_EVENT_IDX(IWEVQUAL)] = { - .header_type = IW_HEADER_TYPE_QUAL, - }, - [IW_EVENT_IDX(IWEVCUSTOM)] = { - .header_type = IW_HEADER_TYPE_POINT, - .token_size = 1, - .max_tokens = IW_CUSTOM_MAX, - }, - [IW_EVENT_IDX(IWEVREGISTERED)] = { - .header_type = IW_HEADER_TYPE_ADDR, - }, - [IW_EVENT_IDX(IWEVEXPIRED)] = { - .header_type = IW_HEADER_TYPE_ADDR, - }, - [IW_EVENT_IDX(IWEVGENIE)] = { - .header_type = IW_HEADER_TYPE_POINT, - .token_size = 1, - .max_tokens = IW_GENERIC_IE_MAX, - }, - [IW_EVENT_IDX(IWEVMICHAELMICFAILURE)] = { - .header_type = IW_HEADER_TYPE_POINT, - .token_size = 1, - .max_tokens = sizeof(struct iw_michaelmicfailure), - }, - [IW_EVENT_IDX(IWEVASSOCREQIE)] = { - .header_type = IW_HEADER_TYPE_POINT, - .token_size = 1, - .max_tokens = IW_GENERIC_IE_MAX, - }, - [IW_EVENT_IDX(IWEVASSOCRESPIE)] = { - .header_type = IW_HEADER_TYPE_POINT, - .token_size = 1, - .max_tokens = IW_GENERIC_IE_MAX, - }, - [IW_EVENT_IDX(IWEVPMKIDCAND)] = { - .header_type = IW_HEADER_TYPE_POINT, - .token_size = 1, - .max_tokens = sizeof(struct iw_pmkid_cand), - }, -}; -static const unsigned standard_event_num = ARRAY_SIZE(standard_event); - -/* Size (in bytes) of various events */ -static const int event_type_size[] = { - IW_EV_LCP_LEN, /* IW_HEADER_TYPE_NULL */ - 0, - IW_EV_CHAR_LEN, /* IW_HEADER_TYPE_CHAR */ - 0, - IW_EV_UINT_LEN, /* IW_HEADER_TYPE_UINT */ - IW_EV_FREQ_LEN, /* IW_HEADER_TYPE_FREQ */ - IW_EV_ADDR_LEN, /* IW_HEADER_TYPE_ADDR */ - 0, - IW_EV_POINT_LEN, /* Without variable payload */ - IW_EV_PARAM_LEN, /* IW_HEADER_TYPE_PARAM */ - IW_EV_QUAL_LEN, /* IW_HEADER_TYPE_QUAL */ -}; - -#ifdef CONFIG_COMPAT -static const int compat_event_type_size[] = { - IW_EV_COMPAT_LCP_LEN, /* IW_HEADER_TYPE_NULL */ - 0, - IW_EV_COMPAT_CHAR_LEN, /* IW_HEADER_TYPE_CHAR */ - 0, - IW_EV_COMPAT_UINT_LEN, /* IW_HEADER_TYPE_UINT */ - IW_EV_COMPAT_FREQ_LEN, /* IW_HEADER_TYPE_FREQ */ - IW_EV_COMPAT_ADDR_LEN, /* IW_HEADER_TYPE_ADDR */ - 0, - IW_EV_COMPAT_POINT_LEN, /* Without variable payload */ - IW_EV_COMPAT_PARAM_LEN, /* IW_HEADER_TYPE_PARAM */ - IW_EV_COMPAT_QUAL_LEN, /* IW_HEADER_TYPE_QUAL */ -}; -#endif - - -/* IW event code */ - -#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,32)) -static int __net_init wext_pernet_init(struct net *net) -{ - skb_queue_head_init(&net->wext_nlevents); - return 0; -} - -static void __net_exit wext_pernet_exit(struct net *net) -{ - skb_queue_purge(&net->wext_nlevents); -} - -static struct pernet_operations wext_pernet_ops = { - .init = wext_pernet_init, - .exit = wext_pernet_exit, -}; - -static int __init wireless_nlevent_init(void) -{ - return register_pernet_subsys(&wext_pernet_ops); -} - -subsys_initcall(wireless_nlevent_init); - -/* Process events generated by the wireless layer or the driver. */ -static void wireless_nlevent_process(struct work_struct *work) -{ - struct sk_buff *skb; - struct net *net; - - rtnl_lock(); - - for_each_net(net) { - while ((skb = skb_dequeue(&net->wext_nlevents))) - rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL, - GFP_KERNEL); - } - - rtnl_unlock(); -} - -static DECLARE_WORK(wireless_nlevent_work, wireless_nlevent_process); - -#else -/* Older kernels get the old way of doing stuff*/ -static struct sk_buff_head wireless_nlevent_queue; - -static int __init wireless_nlevent_init(void) -{ - skb_queue_head_init(&wireless_nlevent_queue); - return 0; -} - -subsys_initcall(wireless_nlevent_init); - -static void wireless_nlevent_process(unsigned long data) -{ - struct sk_buff *skb; - while ((skb = skb_dequeue(&wireless_nlevent_queue))) -#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,24)) - rtnl_notify(skb, &init_net, 0, RTNLGRP_LINK, NULL, GFP_ATOMIC); -#else - rtnl_notify(skb, 0, RTNLGRP_LINK, NULL, GFP_ATOMIC); -#endif -} - -static DECLARE_TASKLET(wireless_nlevent_tasklet, wireless_nlevent_process, 0); - -#endif - -static struct nlmsghdr *rtnetlink_ifinfo_prep(struct net_device *dev, - struct sk_buff *skb) -{ - struct ifinfomsg *r; - struct nlmsghdr *nlh; - - nlh = nlmsg_put(skb, 0, 0, RTM_NEWLINK, sizeof(*r), 0); - if (!nlh) - return NULL; - - r = nlmsg_data(nlh); - r->ifi_family = AF_UNSPEC; - r->__ifi_pad = 0; - r->ifi_type = dev->type; - r->ifi_index = dev->ifindex; - r->ifi_flags = dev_get_flags(dev); - r->ifi_change = 0; /* Wireless changes don't affect those flags */ - - NLA_PUT_STRING(skb, IFLA_IFNAME, dev->name); - - return nlh; - nla_put_failure: - nlmsg_cancel(skb, nlh); - return NULL; -} - - -/* - * Main event dispatcher. Called from other parts and drivers. - * Send the event on the appropriate channels. - * May be called from interrupt context. - */ -void wireless_send_event(struct net_device * dev, - unsigned int cmd, - union iwreq_data * wrqu, - const char * extra) -{ - const struct iw_ioctl_description * descr = NULL; - int extra_len = 0; - struct iw_event *event; /* Mallocated whole event */ - int event_len; /* Its size */ - int hdr_len; /* Size of the event header */ - int wrqu_off = 0; /* Offset in wrqu */ - /* Don't "optimise" the following variable, it will crash */ - unsigned cmd_index; /* *MUST* be unsigned */ - struct sk_buff *skb; - struct nlmsghdr *nlh; - struct nlattr *nla; -#ifdef CONFIG_COMPAT - struct __compat_iw_event *compat_event; - struct compat_iw_point compat_wrqu; - struct sk_buff *compskb; -#endif - - /* - * Nothing in the kernel sends scan events with data, be safe. - * This is necessary because we cannot fix up scan event data - * for compat, due to being contained in 'extra', but normally - * applications are required to retrieve the scan data anyway - * and no data is included in the event, this codifies that - * practice. - */ - if (WARN_ON(cmd == SIOCGIWSCAN && extra)) - extra = NULL; - - /* Get the description of the Event */ - if (cmd <= SIOCIWLAST) { - cmd_index = IW_IOCTL_IDX(cmd); - if (cmd_index < standard_ioctl_num) - descr = &(standard_ioctl[cmd_index]); - } else { - cmd_index = IW_EVENT_IDX(cmd); - if (cmd_index < standard_event_num) - descr = &(standard_event[cmd_index]); - } - /* Don't accept unknown events */ - if (descr == NULL) { - /* Note : we don't return an error to the driver, because - * the driver would not know what to do about it. It can't - * return an error to the user, because the event is not - * initiated by a user request. - * The best the driver could do is to log an error message. - * We will do it ourselves instead... - */ - netdev_err(dev, "(WE) : Invalid/Unknown Wireless Event (0x%04X)\n", - cmd); - return; - } - - /* Check extra parameters and set extra_len */ - if (descr->header_type == IW_HEADER_TYPE_POINT) { - /* Check if number of token fits within bounds */ - if (wrqu->data.length > descr->max_tokens) { - netdev_err(dev, "(WE) : Wireless Event too big (%d)\n", - wrqu->data.length); - return; - } - if (wrqu->data.length < descr->min_tokens) { - netdev_err(dev, "(WE) : Wireless Event too small (%d)\n", - wrqu->data.length); - return; - } - /* Calculate extra_len - extra is NULL for restricted events */ - if (extra != NULL) - extra_len = wrqu->data.length * descr->token_size; - /* Always at an offset in wrqu */ - wrqu_off = IW_EV_POINT_OFF; - } - - /* Total length of the event */ - hdr_len = event_type_size[descr->header_type]; - event_len = hdr_len + extra_len; - - /* - * The problem for 64/32 bit. - * - * On 64-bit, a regular event is laid out as follows: - * | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | - * | event.len | event.cmd | p a d d i n g | - * | wrqu data ... (with the correct size) | - * - * This padding exists because we manipulate event->u, - * and 'event' is not packed. - * - * An iw_point event is laid out like this instead: - * | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | - * | event.len | event.cmd | p a d d i n g | - * | iwpnt.len | iwpnt.flg | p a d d i n g | - * | extra data ... - * - * The second padding exists because struct iw_point is extended, - * but this depends on the platform... - * - * On 32-bit, all the padding shouldn't be there. - */ - - skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); - if (!skb) - return; - - /* Send via the RtNetlink event channel */ - nlh = rtnetlink_ifinfo_prep(dev, skb); - if (WARN_ON(!nlh)) { - kfree_skb(skb); - return; - } - - /* Add the wireless events in the netlink packet */ - nla = nla_reserve(skb, IFLA_WIRELESS, event_len); - if (!nla) { - kfree_skb(skb); - return; - } - event = nla_data(nla); - - /* Fill event - first clear to avoid data leaking */ - memset(event, 0, hdr_len); - event->len = event_len; - event->cmd = cmd; - memcpy(&event->u, ((char *) wrqu) + wrqu_off, hdr_len - IW_EV_LCP_LEN); - if (extra_len) - memcpy(((char *) event) + hdr_len, extra, extra_len); - - nlmsg_end(skb, nlh); -#ifdef CONFIG_COMPAT - hdr_len = compat_event_type_size[descr->header_type]; - event_len = hdr_len + extra_len; - - compskb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); - if (!compskb) { - kfree_skb(skb); - return; - } - - /* Send via the RtNetlink event channel */ - nlh = rtnetlink_ifinfo_prep(dev, compskb); - if (WARN_ON(!nlh)) { - kfree_skb(skb); - kfree_skb(compskb); - return; - } - - /* Add the wireless events in the netlink packet */ - nla = nla_reserve(compskb, IFLA_WIRELESS, event_len); - if (!nla) { - kfree_skb(skb); - kfree_skb(compskb); - return; - } - compat_event = nla_data(nla); - - compat_event->len = event_len; - compat_event->cmd = cmd; - if (descr->header_type == IW_HEADER_TYPE_POINT) { - compat_wrqu.length = wrqu->data.length; - compat_wrqu.flags = wrqu->data.flags; - memcpy(&compat_event->pointer, - ((char *) &compat_wrqu) + IW_EV_COMPAT_POINT_OFF, - hdr_len - IW_EV_COMPAT_LCP_LEN); - if (extra_len) - memcpy(((char *) compat_event) + hdr_len, - extra, extra_len); - } else { - /* extra_len must be zero, so no if (extra) needed */ - memcpy(&compat_event->pointer, wrqu, - hdr_len - IW_EV_COMPAT_LCP_LEN); - } - - nlmsg_end(compskb, nlh); - - skb_shinfo(skb)->frag_list = compskb; -#endif -#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,32)) - skb_queue_tail(&dev_net(dev)->wext_nlevents, skb); - schedule_work(&wireless_nlevent_work); -#else - skb_queue_tail(&wireless_nlevent_queue, skb); - tasklet_schedule(&wireless_nlevent_tasklet); -#endif -} -EXPORT_SYMBOL(wireless_send_event); - - - -/* IW handlers */ - -struct iw_statistics *get_wireless_stats(struct net_device *dev) -{ -#ifdef CONFIG_WIRELESS_EXT - if ((dev->wireless_handlers != NULL) && - (dev->wireless_handlers->get_wireless_stats != NULL)) - return dev->wireless_handlers->get_wireless_stats(dev); -#endif - -#ifdef CONFIG_CFG80211_WEXT - if (dev->ieee80211_ptr && - dev->ieee80211_ptr->wiphy && - dev->ieee80211_ptr->wiphy->wext && - dev->ieee80211_ptr->wiphy->wext->get_wireless_stats) - return dev->ieee80211_ptr->wiphy->wext->get_wireless_stats(dev); -#endif - - /* not found */ - return NULL; -} - -static int iw_handler_get_iwstats(struct net_device * dev, - struct iw_request_info * info, - union iwreq_data * wrqu, - char * extra) -{ - /* Get stats from the driver */ - struct iw_statistics *stats; - - stats = get_wireless_stats(dev); - if (stats) { - /* Copy statistics to extra */ - memcpy(extra, stats, sizeof(struct iw_statistics)); - wrqu->data.length = sizeof(struct iw_statistics); - - /* Check if we need to clear the updated flag */ - if (wrqu->data.flags != 0) - stats->qual.updated &= ~IW_QUAL_ALL_UPDATED; - return 0; - } else - return -EOPNOTSUPP; -} - -static iw_handler get_handler(struct net_device *dev, unsigned int cmd) -{ - /* Don't "optimise" the following variable, it will crash */ - unsigned int index; /* *MUST* be unsigned */ - const struct iw_handler_def *handlers = NULL; - -#ifdef CONFIG_CFG80211_WEXT - if (dev->ieee80211_ptr && dev->ieee80211_ptr->wiphy) - handlers = dev->ieee80211_ptr->wiphy->wext; -#endif -#ifdef CONFIG_WIRELESS_EXT - if (dev->wireless_handlers) - handlers = dev->wireless_handlers; -#endif - - if (!handlers) - return NULL; - - /* Try as a standard command */ - index = IW_IOCTL_IDX(cmd); - if (index < handlers->num_standard) - return handlers->standard[index]; - -#ifdef CONFIG_WEXT_PRIV - /* Try as a private command */ - index = cmd - SIOCIWFIRSTPRIV; - if (index < handlers->num_private) - return handlers->private[index]; -#endif - - /* Not found */ - return NULL; -} - -static int ioctl_standard_iw_point(struct iw_point *iwp, unsigned int cmd, - const struct iw_ioctl_description *descr, - iw_handler handler, struct net_device *dev, - struct iw_request_info *info) -{ - int err, extra_size, user_length = 0, essid_compat = 0; - char *extra; - - /* Calculate space needed by arguments. Always allocate - * for max space. - */ - extra_size = descr->max_tokens * descr->token_size; - - /* Check need for ESSID compatibility for WE < 21 */ - switch (cmd) { - case SIOCSIWESSID: - case SIOCGIWESSID: - case SIOCSIWNICKN: - case SIOCGIWNICKN: - if (iwp->length == descr->max_tokens + 1) - essid_compat = 1; - else if (IW_IS_SET(cmd) && (iwp->length != 0)) { - char essid[IW_ESSID_MAX_SIZE + 1]; - unsigned int len; - len = iwp->length * descr->token_size; - - if (len > IW_ESSID_MAX_SIZE) - return -EFAULT; - - err = copy_from_user(essid, iwp->pointer, len); - if (err) - return -EFAULT; - - if (essid[iwp->length - 1] == '\0') - essid_compat = 1; - } - break; - default: - break; - } - - iwp->length -= essid_compat; - - /* Check what user space is giving us */ - if (IW_IS_SET(cmd)) { - /* Check NULL pointer */ - if (!iwp->pointer && iwp->length != 0) - return -EFAULT; - /* Check if number of token fits within bounds */ - if (iwp->length > descr->max_tokens) - return -E2BIG; - if (iwp->length < descr->min_tokens) - return -EINVAL; - } else { - /* Check NULL pointer */ - if (!iwp->pointer) - return -EFAULT; - /* Save user space buffer size for checking */ - user_length = iwp->length; - - /* Don't check if user_length > max to allow forward - * compatibility. The test user_length < min is - * implied by the test at the end. - */ - - /* Support for very large requests */ - if ((descr->flags & IW_DESCR_FLAG_NOMAX) && - (user_length > descr->max_tokens)) { - /* Allow userspace to GET more than max so - * we can support any size GET requests. - * There is still a limit : -ENOMEM. - */ - extra_size = user_length * descr->token_size; - - /* Note : user_length is originally a __u16, - * and token_size is controlled by us, - * so extra_size won't get negative and - * won't overflow... - */ - } - } - - /* kzalloc() ensures NULL-termination for essid_compat. */ - extra = kzalloc(extra_size, GFP_KERNEL); - if (!extra) - return -ENOMEM; - - /* If it is a SET, get all the extra data in here */ - if (IW_IS_SET(cmd) && (iwp->length != 0)) { - if (copy_from_user(extra, iwp->pointer, - iwp->length * - descr->token_size)) { - err = -EFAULT; - goto out; - } - - if (cmd == SIOCSIWENCODEEXT) { - struct iw_encode_ext *ee = (void *) extra; - - if (iwp->length < sizeof(*ee) + ee->key_len) - return -EFAULT; - } - } - - if (IW_IS_GET(cmd) && !(descr->flags & IW_DESCR_FLAG_NOMAX)) { - /* - * If this is a GET, but not NOMAX, it means that the extra - * data is not bounded by userspace, but by max_tokens. Thus - * set the length to max_tokens. This matches the extra data - * allocation. - * The driver should fill it with the number of tokens it - * provided, and it may check iwp->length rather than having - * knowledge of max_tokens. If the driver doesn't change the - * iwp->length, this ioctl just copies back max_token tokens - * filled with zeroes. Hopefully the driver isn't claiming - * them to be valid data. - */ - iwp->length = descr->max_tokens; - } - - err = handler(dev, info, (union iwreq_data *) iwp, extra); - - iwp->length += essid_compat; - - /* If we have something to return to the user */ - if (!err && IW_IS_GET(cmd)) { - /* Check if there is enough buffer up there */ - if (user_length < iwp->length) { - err = -E2BIG; - goto out; - } - - if (copy_to_user(iwp->pointer, extra, - iwp->length * - descr->token_size)) { - err = -EFAULT; - goto out; - } - } - - /* Generate an event to notify listeners of the change */ - if ((descr->flags & IW_DESCR_FLAG_EVENT) && - ((err == 0) || (err == -EIWCOMMIT))) { - union iwreq_data *data = (union iwreq_data *) iwp; - - if (descr->flags & IW_DESCR_FLAG_RESTRICT) - /* If the event is restricted, don't - * export the payload. - */ - wireless_send_event(dev, cmd, data, NULL); - else - wireless_send_event(dev, cmd, data, extra); - } - -out: - kfree(extra); - return err; -} - -/* - * Call the commit handler in the driver - * (if exist and if conditions are right) - * - * Note : our current commit strategy is currently pretty dumb, - * but we will be able to improve on that... - * The goal is to try to agreagate as many changes as possible - * before doing the commit. Drivers that will define a commit handler - * are usually those that need a reset after changing parameters, so - * we want to minimise the number of reset. - * A cool idea is to use a timer : at each "set" command, we re-set the - * timer, when the timer eventually fires, we call the driver. - * Hopefully, more on that later. - * - * Also, I'm waiting to see how many people will complain about the - * netif_running(dev) test. I'm open on that one... - * Hopefully, the driver will remember to do a commit in "open()" ;-) - */ -int call_commit_handler(struct net_device *dev) -{ -#ifdef CONFIG_WIRELESS_EXT - if ((netif_running(dev)) && - (dev->wireless_handlers->standard[0] != NULL)) - /* Call the commit handler on the driver */ - return dev->wireless_handlers->standard[0](dev, NULL, - NULL, NULL); - else - return 0; /* Command completed successfully */ -#else - /* cfg80211 has no commit */ - return 0; -#endif -} - -/* - * Main IOCTl dispatcher. - * Check the type of IOCTL and call the appropriate wrapper... - */ -static int wireless_process_ioctl(struct net *net, struct ifreq *ifr, - unsigned int cmd, - struct iw_request_info *info, - wext_ioctl_func standard, - wext_ioctl_func private) -{ - struct iwreq *iwr = (struct iwreq *) ifr; - struct net_device *dev; - iw_handler handler; - - /* Permissions are already checked in dev_ioctl() before calling us. - * The copy_to/from_user() of ifr is also dealt with in there */ - - /* Make sure the device exist */ - if ((dev = __dev_get_by_name(net, ifr->ifr_name)) == NULL) - return -ENODEV; - - /* A bunch of special cases, then the generic case... - * Note that 'cmd' is already filtered in dev_ioctl() with - * (cmd >= SIOCIWFIRST && cmd <= SIOCIWLAST) */ - if (cmd == SIOCGIWSTATS) - return standard(dev, iwr, cmd, info, - &iw_handler_get_iwstats); - -#ifdef CONFIG_WEXT_PRIV - if (cmd == SIOCGIWPRIV && dev->wireless_handlers) - return standard(dev, iwr, cmd, info, - iw_handler_get_private); -#endif - - /* Basic check */ - if (!netif_device_present(dev)) - return -ENODEV; - - /* New driver API : try to find the handler */ - handler = get_handler(dev, cmd); - if (handler) { - /* Standard and private are not the same */ - if (cmd < SIOCIWFIRSTPRIV) - return standard(dev, iwr, cmd, info, handler); - else if (private) - return private(dev, iwr, cmd, info, handler); - } - /* Old driver API : call driver ioctl handler */ -#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,29)) - if (dev->netdev_ops->ndo_do_ioctl) - return dev->netdev_ops->ndo_do_ioctl(dev, ifr, cmd); -#else - if (dev->do_ioctl) - return dev->do_ioctl(dev, ifr, cmd); -#endif - return -EOPNOTSUPP; -} - -/* If command is `set a parameter', or `get the encoding parameters', - * check if the user has the right to do it. - */ -static int wext_permission_check(unsigned int cmd) -{ - if ((IW_IS_SET(cmd) || cmd == SIOCGIWENCODE || - cmd == SIOCGIWENCODEEXT) && - !capable(CAP_NET_ADMIN)) - return -EPERM; - - return 0; -} - -/* entry point from dev ioctl */ -static int wext_ioctl_dispatch(struct net *net, struct ifreq *ifr, - unsigned int cmd, struct iw_request_info *info, - wext_ioctl_func standard, - wext_ioctl_func private) -{ - int ret = wext_permission_check(cmd); - - if (ret) - return ret; - - dev_load(net, ifr->ifr_name); - rtnl_lock(); - ret = wireless_process_ioctl(net, ifr, cmd, info, standard, private); - rtnl_unlock(); - - return ret; -} - -/* - * Wrapper to call a standard Wireless Extension handler. - * We do various checks and also take care of moving data between - * user space and kernel space. - */ -static int ioctl_standard_call(struct net_device * dev, - struct iwreq *iwr, - unsigned int cmd, - struct iw_request_info *info, - iw_handler handler) -{ - const struct iw_ioctl_description * descr; - int ret = -EINVAL; - - /* Get the description of the IOCTL */ - if (IW_IOCTL_IDX(cmd) >= standard_ioctl_num) - return -EOPNOTSUPP; - descr = &(standard_ioctl[IW_IOCTL_IDX(cmd)]); - - /* Check if we have a pointer to user space data or not */ - if (descr->header_type != IW_HEADER_TYPE_POINT) { - - /* No extra arguments. Trivial to handle */ - ret = handler(dev, info, &(iwr->u), NULL); - - /* Generate an event to notify listeners of the change */ - if ((descr->flags & IW_DESCR_FLAG_EVENT) && - ((ret == 0) || (ret == -EIWCOMMIT))) - wireless_send_event(dev, cmd, &(iwr->u), NULL); - } else { - ret = ioctl_standard_iw_point(&iwr->u.data, cmd, descr, - handler, dev, info); - } - - /* Call commit handler if needed and defined */ - if (ret == -EIWCOMMIT) - ret = call_commit_handler(dev); - - /* Here, we will generate the appropriate event if needed */ - - return ret; -} - - -int wext_handle_ioctl(struct net *net, struct ifreq *ifr, unsigned int cmd, - void __user *arg) -{ - struct iw_request_info info = { .cmd = cmd, .flags = 0 }; - int ret; - - ret = wext_ioctl_dispatch(net, ifr, cmd, &info, - ioctl_standard_call, - ioctl_private_call); - if (ret >= 0 && - IW_IS_GET(cmd) && - copy_to_user(arg, ifr, sizeof(struct iwreq))) - return -EFAULT; - - return ret; -} - -#ifdef CONFIG_COMPAT -static int compat_standard_call(struct net_device *dev, - struct iwreq *iwr, - unsigned int cmd, - struct iw_request_info *info, - iw_handler handler) -{ - const struct iw_ioctl_description *descr; - struct compat_iw_point *iwp_compat; - struct iw_point iwp; - int err; - - descr = standard_ioctl + IW_IOCTL_IDX(cmd); - - if (descr->header_type != IW_HEADER_TYPE_POINT) - return ioctl_standard_call(dev, iwr, cmd, info, handler); - - iwp_compat = (struct compat_iw_point *) &iwr->u.data; - iwp.pointer = compat_ptr(iwp_compat->pointer); - iwp.length = iwp_compat->length; - iwp.flags = iwp_compat->flags; - - err = ioctl_standard_iw_point(&iwp, cmd, descr, handler, dev, info); - - iwp_compat->pointer = ptr_to_compat(iwp.pointer); - iwp_compat->length = iwp.length; - iwp_compat->flags = iwp.flags; - - return err; -} - -int compat_wext_handle_ioctl(struct net *net, unsigned int cmd, - unsigned long arg) -{ - void __user *argp = (void __user *)arg; - struct iw_request_info info; - struct iwreq iwr; - char *colon; - int ret; - - if (copy_from_user(&iwr, argp, sizeof(struct iwreq))) - return -EFAULT; - - iwr.ifr_name[IFNAMSIZ-1] = 0; - colon = strchr(iwr.ifr_name, ':'); - if (colon) - *colon = 0; - - info.cmd = cmd; - info.flags = IW_REQUEST_FLAG_COMPAT; - - ret = wext_ioctl_dispatch(net, (struct ifreq *) &iwr, cmd, &info, - compat_standard_call, - compat_private_call); - - if (ret >= 0 && - IW_IS_GET(cmd) && - copy_to_user(argp, &iwr, sizeof(struct iwreq))) - return -EFAULT; - - return ret; -} -#endif -- cgit v1.1