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-rwxr-xr-xnet/wireless_ath/wext-core.c1123
1 files changed, 0 insertions, 1123 deletions
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 - <jt@hpl.hp.com>
- * Copyright (c) 1997-2007 Jean Tourrilhes, All Rights Reserved.
- * Copyright 2009 Johannes Berg <johannes@sipsolutions.net>
- *
- * (As all part of the Linux kernel, this file is GPL)
- */
-#include <linux/kernel.h>
-#include <linux/netdevice.h>
-#include <linux/rtnetlink.h>
-#include <linux/slab.h>
-#include <linux/wireless.h>
-#include <linux/uaccess.h>
-#include <linux/export.h>
-#include <net/cfg80211.h>
-#include <net/iw_handler.h>
-#include <net/netlink.h>
-#include <net/wext.h>
-#include <net/net_namespace.h>
-
-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