2 * This is the new netlink-based wireless configuration interface.
4 * Copyright 2006, 2007 Johannes Berg <johannes@sipsolutions.net>
8 #include <linux/module.h>
10 #include <linux/list.h>
11 #include <linux/if_ether.h>
12 #include <linux/ieee80211.h>
13 #include <linux/nl80211.h>
14 #include <linux/rtnetlink.h>
15 #include <linux/netlink.h>
16 #include <linux/etherdevice.h>
17 #include <net/genetlink.h>
18 #include <net/cfg80211.h>
23 /* the netlink family */
24 static struct genl_family nl80211_fam = {
25 .id = GENL_ID_GENERATE, /* don't bother with a hardcoded ID */
26 .name = "nl80211", /* have users key off the name instead */
27 .hdrsize = 0, /* no private header */
28 .version = 1, /* no particular meaning now */
29 .maxattr = NL80211_ATTR_MAX,
32 /* internal helper: get drv and dev */
33 static int get_drv_dev_by_info_ifindex(struct nlattr **attrs,
34 struct cfg80211_registered_device **drv,
35 struct net_device **dev)
39 if (!attrs[NL80211_ATTR_IFINDEX])
42 ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
43 *dev = dev_get_by_index(&init_net, ifindex);
47 *drv = cfg80211_get_dev_from_ifindex(ifindex);
56 /* policy for the attributes */
57 static struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] __read_mostly = {
58 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
59 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
60 .len = BUS_ID_SIZE-1 },
61 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
62 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
63 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
65 [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
66 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
67 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
69 [NL80211_ATTR_MAC] = { .type = NLA_BINARY, .len = ETH_ALEN },
71 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
72 .len = WLAN_MAX_KEY_LEN },
73 [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
74 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
75 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
77 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
78 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
79 [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
80 .len = IEEE80211_MAX_DATA_LEN },
81 [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
82 .len = IEEE80211_MAX_DATA_LEN },
83 [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
84 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
85 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
86 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
87 .len = NL80211_MAX_SUPP_RATES },
88 [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
89 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
90 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
91 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
92 .len = IEEE80211_MAX_MESH_ID_LEN },
93 [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
95 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
96 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
98 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
99 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
100 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
101 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
102 .len = NL80211_MAX_SUPP_RATES },
104 [NL80211_ATTR_MESH_PARAMS] = { .type = NLA_NESTED },
106 [NL80211_ATTR_HT_CAPABILITY] = { .type = NLA_BINARY,
107 .len = NL80211_HT_CAPABILITY_LEN },
109 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
110 [NL80211_ATTR_IE] = { .type = NLA_BINARY,
111 .len = IEEE80211_MAX_DATA_LEN },
112 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
113 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
116 /* message building helper */
117 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 pid, u32 seq,
120 /* since there is no private header just add the generic one */
121 return genlmsg_put(skb, pid, seq, &nl80211_fam, flags, cmd);
124 /* netlink command implementations */
126 static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags,
127 struct cfg80211_registered_device *dev)
130 struct nlattr *nl_bands, *nl_band;
131 struct nlattr *nl_freqs, *nl_freq;
132 struct nlattr *nl_rates, *nl_rate;
133 struct nlattr *nl_modes;
134 enum ieee80211_band band;
135 struct ieee80211_channel *chan;
136 struct ieee80211_rate *rate;
138 u16 ifmodes = dev->wiphy.interface_modes;
140 assert_cfg80211_lock();
142 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_WIPHY);
146 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, dev->wiphy_idx);
147 NLA_PUT_STRING(msg, NL80211_ATTR_WIPHY_NAME, wiphy_name(&dev->wiphy));
148 NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
149 dev->wiphy.max_scan_ssids);
151 nl_modes = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_IFTYPES);
153 goto nla_put_failure;
158 NLA_PUT_FLAG(msg, i);
163 nla_nest_end(msg, nl_modes);
165 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
167 goto nla_put_failure;
169 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
170 if (!dev->wiphy.bands[band])
173 nl_band = nla_nest_start(msg, band);
175 goto nla_put_failure;
178 if (dev->wiphy.bands[band]->ht_cap.ht_supported) {
179 NLA_PUT(msg, NL80211_BAND_ATTR_HT_MCS_SET,
180 sizeof(dev->wiphy.bands[band]->ht_cap.mcs),
181 &dev->wiphy.bands[band]->ht_cap.mcs);
182 NLA_PUT_U16(msg, NL80211_BAND_ATTR_HT_CAPA,
183 dev->wiphy.bands[band]->ht_cap.cap);
184 NLA_PUT_U8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
185 dev->wiphy.bands[band]->ht_cap.ampdu_factor);
186 NLA_PUT_U8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
187 dev->wiphy.bands[band]->ht_cap.ampdu_density);
190 /* add frequencies */
191 nl_freqs = nla_nest_start(msg, NL80211_BAND_ATTR_FREQS);
193 goto nla_put_failure;
195 for (i = 0; i < dev->wiphy.bands[band]->n_channels; i++) {
196 nl_freq = nla_nest_start(msg, i);
198 goto nla_put_failure;
200 chan = &dev->wiphy.bands[band]->channels[i];
201 NLA_PUT_U32(msg, NL80211_FREQUENCY_ATTR_FREQ,
204 if (chan->flags & IEEE80211_CHAN_DISABLED)
205 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_DISABLED);
206 if (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN)
207 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_PASSIVE_SCAN);
208 if (chan->flags & IEEE80211_CHAN_NO_IBSS)
209 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_NO_IBSS);
210 if (chan->flags & IEEE80211_CHAN_RADAR)
211 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_RADAR);
213 NLA_PUT_U32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
214 DBM_TO_MBM(chan->max_power));
216 nla_nest_end(msg, nl_freq);
219 nla_nest_end(msg, nl_freqs);
222 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
224 goto nla_put_failure;
226 for (i = 0; i < dev->wiphy.bands[band]->n_bitrates; i++) {
227 nl_rate = nla_nest_start(msg, i);
229 goto nla_put_failure;
231 rate = &dev->wiphy.bands[band]->bitrates[i];
232 NLA_PUT_U32(msg, NL80211_BITRATE_ATTR_RATE,
234 if (rate->flags & IEEE80211_RATE_SHORT_PREAMBLE)
236 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE);
238 nla_nest_end(msg, nl_rate);
241 nla_nest_end(msg, nl_rates);
243 nla_nest_end(msg, nl_band);
245 nla_nest_end(msg, nl_bands);
247 return genlmsg_end(msg, hdr);
250 genlmsg_cancel(msg, hdr);
254 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
257 int start = cb->args[0];
258 struct cfg80211_registered_device *dev;
260 mutex_lock(&cfg80211_mutex);
261 list_for_each_entry(dev, &cfg80211_drv_list, list) {
264 if (nl80211_send_wiphy(skb, NETLINK_CB(cb->skb).pid,
265 cb->nlh->nlmsg_seq, NLM_F_MULTI,
271 mutex_unlock(&cfg80211_mutex);
278 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
281 struct cfg80211_registered_device *dev;
283 dev = cfg80211_get_dev_from_info(info);
287 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
291 if (nl80211_send_wiphy(msg, info->snd_pid, info->snd_seq, 0, dev) < 0)
294 cfg80211_put_dev(dev);
296 return genlmsg_unicast(msg, info->snd_pid);
301 cfg80211_put_dev(dev);
305 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
306 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
307 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
308 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
309 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
310 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
313 static int parse_txq_params(struct nlattr *tb[],
314 struct ieee80211_txq_params *txq_params)
316 if (!tb[NL80211_TXQ_ATTR_QUEUE] || !tb[NL80211_TXQ_ATTR_TXOP] ||
317 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
318 !tb[NL80211_TXQ_ATTR_AIFS])
321 txq_params->queue = nla_get_u8(tb[NL80211_TXQ_ATTR_QUEUE]);
322 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
323 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
324 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
325 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
330 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
332 struct cfg80211_registered_device *rdev;
333 int result = 0, rem_txq_params = 0;
334 struct nlattr *nl_txq_params;
336 rdev = cfg80211_get_dev_from_info(info);
338 return PTR_ERR(rdev);
340 if (info->attrs[NL80211_ATTR_WIPHY_NAME]) {
341 result = cfg80211_dev_rename(
342 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
347 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
348 struct ieee80211_txq_params txq_params;
349 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
351 if (!rdev->ops->set_txq_params) {
352 result = -EOPNOTSUPP;
356 nla_for_each_nested(nl_txq_params,
357 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
359 nla_parse(tb, NL80211_TXQ_ATTR_MAX,
360 nla_data(nl_txq_params),
361 nla_len(nl_txq_params),
363 result = parse_txq_params(tb, &txq_params);
367 result = rdev->ops->set_txq_params(&rdev->wiphy,
374 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
375 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
376 struct ieee80211_channel *chan;
377 struct ieee80211_sta_ht_cap *ht_cap;
380 if (!rdev->ops->set_channel) {
381 result = -EOPNOTSUPP;
387 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
388 channel_type = nla_get_u32(info->attrs[
389 NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
390 if (channel_type != NL80211_CHAN_NO_HT &&
391 channel_type != NL80211_CHAN_HT20 &&
392 channel_type != NL80211_CHAN_HT40PLUS &&
393 channel_type != NL80211_CHAN_HT40MINUS)
397 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
398 chan = ieee80211_get_channel(&rdev->wiphy, freq);
400 /* Primary channel not allowed */
401 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
404 if (channel_type == NL80211_CHAN_HT40MINUS)
405 sec_freq = freq - 20;
406 else if (channel_type == NL80211_CHAN_HT40PLUS)
407 sec_freq = freq + 20;
411 ht_cap = &rdev->wiphy.bands[chan->band]->ht_cap;
413 /* no HT capabilities */
414 if (channel_type != NL80211_CHAN_NO_HT &&
415 !ht_cap->ht_supported)
419 struct ieee80211_channel *schan;
421 /* no 40 MHz capabilities */
422 if (!(ht_cap->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) ||
423 (ht_cap->cap & IEEE80211_HT_CAP_40MHZ_INTOLERANT))
426 schan = ieee80211_get_channel(&rdev->wiphy, sec_freq);
428 /* Secondary channel not allowed */
429 if (!schan || schan->flags & IEEE80211_CHAN_DISABLED)
433 result = rdev->ops->set_channel(&rdev->wiphy, chan,
441 cfg80211_put_dev(rdev);
446 static int nl80211_send_iface(struct sk_buff *msg, u32 pid, u32 seq, int flags,
447 struct net_device *dev)
451 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_INTERFACE);
455 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
456 NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, dev->name);
457 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, dev->ieee80211_ptr->iftype);
458 return genlmsg_end(msg, hdr);
461 genlmsg_cancel(msg, hdr);
465 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
469 int wp_start = cb->args[0];
470 int if_start = cb->args[1];
471 struct cfg80211_registered_device *dev;
472 struct wireless_dev *wdev;
474 mutex_lock(&cfg80211_mutex);
475 list_for_each_entry(dev, &cfg80211_drv_list, list) {
476 if (wp_idx < wp_start) {
482 mutex_lock(&dev->devlist_mtx);
483 list_for_each_entry(wdev, &dev->netdev_list, list) {
484 if (if_idx < if_start) {
488 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).pid,
489 cb->nlh->nlmsg_seq, NLM_F_MULTI,
491 mutex_unlock(&dev->devlist_mtx);
496 mutex_unlock(&dev->devlist_mtx);
501 mutex_unlock(&cfg80211_mutex);
503 cb->args[0] = wp_idx;
504 cb->args[1] = if_idx;
509 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
512 struct cfg80211_registered_device *dev;
513 struct net_device *netdev;
516 err = get_drv_dev_by_info_ifindex(info->attrs, &dev, &netdev);
520 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
524 if (nl80211_send_iface(msg, info->snd_pid, info->snd_seq, 0, netdev) < 0)
528 cfg80211_put_dev(dev);
530 return genlmsg_unicast(msg, info->snd_pid);
536 cfg80211_put_dev(dev);
540 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
541 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
542 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
543 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
544 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
545 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
548 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
550 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
558 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
559 nla, mntr_flags_policy))
562 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
564 *mntrflags |= (1<<flag);
569 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
571 struct cfg80211_registered_device *drv;
572 struct vif_params params;
574 enum nl80211_iftype type;
575 struct net_device *dev;
576 u32 _flags, *flags = NULL;
578 memset(¶ms, 0, sizeof(params));
580 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
583 ifindex = dev->ifindex;
584 type = dev->ieee80211_ptr->iftype;
588 if (info->attrs[NL80211_ATTR_IFTYPE]) {
589 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
590 if (type > NL80211_IFTYPE_MAX)
594 if (!drv->ops->change_virtual_intf ||
595 !(drv->wiphy.interface_modes & (1 << type))) {
600 if (info->attrs[NL80211_ATTR_MESH_ID]) {
601 if (type != NL80211_IFTYPE_MESH_POINT) {
605 params.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
606 params.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
609 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
610 if (type != NL80211_IFTYPE_MONITOR) {
614 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
620 err = drv->ops->change_virtual_intf(&drv->wiphy, ifindex,
621 type, flags, ¶ms);
623 dev = __dev_get_by_index(&init_net, ifindex);
624 WARN_ON(!dev || (!err && dev->ieee80211_ptr->iftype != type));
629 cfg80211_put_dev(drv);
633 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
635 struct cfg80211_registered_device *drv;
636 struct vif_params params;
638 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
641 memset(¶ms, 0, sizeof(params));
643 if (!info->attrs[NL80211_ATTR_IFNAME])
646 if (info->attrs[NL80211_ATTR_IFTYPE]) {
647 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
648 if (type > NL80211_IFTYPE_MAX)
652 drv = cfg80211_get_dev_from_info(info);
656 if (!drv->ops->add_virtual_intf ||
657 !(drv->wiphy.interface_modes & (1 << type))) {
662 if (type == NL80211_IFTYPE_MESH_POINT &&
663 info->attrs[NL80211_ATTR_MESH_ID]) {
664 params.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
665 params.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
669 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
670 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
672 err = drv->ops->add_virtual_intf(&drv->wiphy,
673 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
674 type, err ? NULL : &flags, ¶ms);
679 cfg80211_put_dev(drv);
683 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
685 struct cfg80211_registered_device *drv;
687 struct net_device *dev;
689 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
692 ifindex = dev->ifindex;
695 if (!drv->ops->del_virtual_intf) {
701 err = drv->ops->del_virtual_intf(&drv->wiphy, ifindex);
705 cfg80211_put_dev(drv);
709 struct get_key_cookie {
714 static void get_key_callback(void *c, struct key_params *params)
716 struct get_key_cookie *cookie = c;
719 NLA_PUT(cookie->msg, NL80211_ATTR_KEY_DATA,
720 params->key_len, params->key);
723 NLA_PUT(cookie->msg, NL80211_ATTR_KEY_SEQ,
724 params->seq_len, params->seq);
727 NLA_PUT_U32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
735 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
737 struct cfg80211_registered_device *drv;
739 struct net_device *dev;
742 struct get_key_cookie cookie = {
748 if (info->attrs[NL80211_ATTR_KEY_IDX])
749 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
754 if (info->attrs[NL80211_ATTR_MAC])
755 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
757 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
761 if (!drv->ops->get_key) {
766 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
772 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
773 NL80211_CMD_NEW_KEY);
782 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
783 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
785 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
788 err = drv->ops->get_key(&drv->wiphy, dev, key_idx, mac_addr,
789 &cookie, get_key_callback);
796 goto nla_put_failure;
798 genlmsg_end(msg, hdr);
799 err = genlmsg_unicast(msg, info->snd_pid);
806 cfg80211_put_dev(drv);
811 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
813 struct cfg80211_registered_device *drv;
815 struct net_device *dev;
817 int (*func)(struct wiphy *wiphy, struct net_device *netdev,
820 if (!info->attrs[NL80211_ATTR_KEY_IDX])
823 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
825 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT]) {
826 if (key_idx < 4 || key_idx > 5)
828 } else if (key_idx > 3)
831 /* currently only support setting default key */
832 if (!info->attrs[NL80211_ATTR_KEY_DEFAULT] &&
833 !info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT])
836 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
840 if (info->attrs[NL80211_ATTR_KEY_DEFAULT])
841 func = drv->ops->set_default_key;
843 func = drv->ops->set_default_mgmt_key;
851 err = func(&drv->wiphy, dev, key_idx);
855 cfg80211_put_dev(drv);
860 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
862 struct cfg80211_registered_device *drv;
864 struct net_device *dev;
865 struct key_params params;
869 memset(¶ms, 0, sizeof(params));
871 if (!info->attrs[NL80211_ATTR_KEY_CIPHER])
874 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
875 params.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
876 params.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
879 if (info->attrs[NL80211_ATTR_KEY_IDX])
880 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
882 params.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
884 if (info->attrs[NL80211_ATTR_MAC])
885 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
891 * Disallow pairwise keys with non-zero index unless it's WEP
892 * (because current deployments use pairwise WEP keys with
893 * non-zero indizes but 802.11i clearly specifies to use zero)
895 if (mac_addr && key_idx &&
896 params.cipher != WLAN_CIPHER_SUITE_WEP40 &&
897 params.cipher != WLAN_CIPHER_SUITE_WEP104)
900 /* TODO: add definitions for the lengths to linux/ieee80211.h */
901 switch (params.cipher) {
902 case WLAN_CIPHER_SUITE_WEP40:
903 if (params.key_len != 5)
906 case WLAN_CIPHER_SUITE_TKIP:
907 if (params.key_len != 32)
910 case WLAN_CIPHER_SUITE_CCMP:
911 if (params.key_len != 16)
914 case WLAN_CIPHER_SUITE_WEP104:
915 if (params.key_len != 13)
918 case WLAN_CIPHER_SUITE_AES_CMAC:
919 if (params.key_len != 16)
926 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
930 if (!drv->ops->add_key) {
936 err = drv->ops->add_key(&drv->wiphy, dev, key_idx, mac_addr, ¶ms);
940 cfg80211_put_dev(drv);
945 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
947 struct cfg80211_registered_device *drv;
949 struct net_device *dev;
953 if (info->attrs[NL80211_ATTR_KEY_IDX])
954 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
959 if (info->attrs[NL80211_ATTR_MAC])
960 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
962 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
966 if (!drv->ops->del_key) {
972 err = drv->ops->del_key(&drv->wiphy, dev, key_idx, mac_addr);
976 cfg80211_put_dev(drv);
981 static int nl80211_addset_beacon(struct sk_buff *skb, struct genl_info *info)
983 int (*call)(struct wiphy *wiphy, struct net_device *dev,
984 struct beacon_parameters *info);
985 struct cfg80211_registered_device *drv;
987 struct net_device *dev;
988 struct beacon_parameters params;
991 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
995 switch (info->genlhdr->cmd) {
996 case NL80211_CMD_NEW_BEACON:
997 /* these are required for NEW_BEACON */
998 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
999 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
1000 !info->attrs[NL80211_ATTR_BEACON_HEAD]) {
1005 call = drv->ops->add_beacon;
1007 case NL80211_CMD_SET_BEACON:
1008 call = drv->ops->set_beacon;
1021 memset(¶ms, 0, sizeof(params));
1023 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
1025 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
1029 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
1030 params.dtim_period =
1031 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
1035 if (info->attrs[NL80211_ATTR_BEACON_HEAD]) {
1036 params.head = nla_data(info->attrs[NL80211_ATTR_BEACON_HEAD]);
1038 nla_len(info->attrs[NL80211_ATTR_BEACON_HEAD]);
1042 if (info->attrs[NL80211_ATTR_BEACON_TAIL]) {
1043 params.tail = nla_data(info->attrs[NL80211_ATTR_BEACON_TAIL]);
1045 nla_len(info->attrs[NL80211_ATTR_BEACON_TAIL]);
1055 err = call(&drv->wiphy, dev, ¶ms);
1059 cfg80211_put_dev(drv);
1064 static int nl80211_del_beacon(struct sk_buff *skb, struct genl_info *info)
1066 struct cfg80211_registered_device *drv;
1068 struct net_device *dev;
1070 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
1074 if (!drv->ops->del_beacon) {
1080 err = drv->ops->del_beacon(&drv->wiphy, dev);
1084 cfg80211_put_dev(drv);
1089 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
1090 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
1091 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
1092 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
1095 static int parse_station_flags(struct nlattr *nla, u32 *staflags)
1097 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
1105 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
1106 nla, sta_flags_policy))
1109 *staflags = STATION_FLAG_CHANGED;
1111 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++)
1113 *staflags |= (1<<flag);
1118 static u16 nl80211_calculate_bitrate(struct rate_info *rate)
1120 int modulation, streams, bitrate;
1122 if (!(rate->flags & RATE_INFO_FLAGS_MCS))
1123 return rate->legacy;
1125 /* the formula below does only work for MCS values smaller than 32 */
1126 if (rate->mcs >= 32)
1129 modulation = rate->mcs & 7;
1130 streams = (rate->mcs >> 3) + 1;
1132 bitrate = (rate->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH) ?
1136 bitrate *= (modulation + 1);
1137 else if (modulation == 4)
1138 bitrate *= (modulation + 2);
1140 bitrate *= (modulation + 3);
1144 if (rate->flags & RATE_INFO_FLAGS_SHORT_GI)
1145 bitrate = (bitrate / 9) * 10;
1147 /* do NOT round down here */
1148 return (bitrate + 50000) / 100000;
1151 static int nl80211_send_station(struct sk_buff *msg, u32 pid, u32 seq,
1152 int flags, struct net_device *dev,
1153 u8 *mac_addr, struct station_info *sinfo)
1156 struct nlattr *sinfoattr, *txrate;
1159 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
1163 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
1164 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
1166 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
1168 goto nla_put_failure;
1169 if (sinfo->filled & STATION_INFO_INACTIVE_TIME)
1170 NLA_PUT_U32(msg, NL80211_STA_INFO_INACTIVE_TIME,
1171 sinfo->inactive_time);
1172 if (sinfo->filled & STATION_INFO_RX_BYTES)
1173 NLA_PUT_U32(msg, NL80211_STA_INFO_RX_BYTES,
1175 if (sinfo->filled & STATION_INFO_TX_BYTES)
1176 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_BYTES,
1178 if (sinfo->filled & STATION_INFO_LLID)
1179 NLA_PUT_U16(msg, NL80211_STA_INFO_LLID,
1181 if (sinfo->filled & STATION_INFO_PLID)
1182 NLA_PUT_U16(msg, NL80211_STA_INFO_PLID,
1184 if (sinfo->filled & STATION_INFO_PLINK_STATE)
1185 NLA_PUT_U8(msg, NL80211_STA_INFO_PLINK_STATE,
1186 sinfo->plink_state);
1187 if (sinfo->filled & STATION_INFO_SIGNAL)
1188 NLA_PUT_U8(msg, NL80211_STA_INFO_SIGNAL,
1190 if (sinfo->filled & STATION_INFO_TX_BITRATE) {
1191 txrate = nla_nest_start(msg, NL80211_STA_INFO_TX_BITRATE);
1193 goto nla_put_failure;
1195 /* nl80211_calculate_bitrate will return 0 for mcs >= 32 */
1196 bitrate = nl80211_calculate_bitrate(&sinfo->txrate);
1198 NLA_PUT_U16(msg, NL80211_RATE_INFO_BITRATE, bitrate);
1200 if (sinfo->txrate.flags & RATE_INFO_FLAGS_MCS)
1201 NLA_PUT_U8(msg, NL80211_RATE_INFO_MCS,
1203 if (sinfo->txrate.flags & RATE_INFO_FLAGS_40_MHZ_WIDTH)
1204 NLA_PUT_FLAG(msg, NL80211_RATE_INFO_40_MHZ_WIDTH);
1205 if (sinfo->txrate.flags & RATE_INFO_FLAGS_SHORT_GI)
1206 NLA_PUT_FLAG(msg, NL80211_RATE_INFO_SHORT_GI);
1208 nla_nest_end(msg, txrate);
1210 if (sinfo->filled & STATION_INFO_RX_PACKETS)
1211 NLA_PUT_U32(msg, NL80211_STA_INFO_RX_PACKETS,
1213 if (sinfo->filled & STATION_INFO_TX_PACKETS)
1214 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_PACKETS,
1216 nla_nest_end(msg, sinfoattr);
1218 return genlmsg_end(msg, hdr);
1221 genlmsg_cancel(msg, hdr);
1225 static int nl80211_dump_station(struct sk_buff *skb,
1226 struct netlink_callback *cb)
1228 struct station_info sinfo;
1229 struct cfg80211_registered_device *dev;
1230 struct net_device *netdev;
1231 u8 mac_addr[ETH_ALEN];
1232 int ifidx = cb->args[0];
1233 int sta_idx = cb->args[1];
1237 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
1238 nl80211_fam.attrbuf, nl80211_fam.maxattr,
1243 if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX])
1246 ifidx = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]);
1251 netdev = dev_get_by_index(&init_net, ifidx);
1255 dev = cfg80211_get_dev_from_ifindex(ifidx);
1258 goto out_put_netdev;
1261 if (!dev->ops->dump_station) {
1269 err = dev->ops->dump_station(&dev->wiphy, netdev, sta_idx,
1276 if (nl80211_send_station(skb,
1277 NETLINK_CB(cb->skb).pid,
1278 cb->nlh->nlmsg_seq, NLM_F_MULTI,
1288 cb->args[1] = sta_idx;
1293 cfg80211_put_dev(dev);
1300 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
1302 struct cfg80211_registered_device *drv;
1304 struct net_device *dev;
1305 struct station_info sinfo;
1306 struct sk_buff *msg;
1307 u8 *mac_addr = NULL;
1309 memset(&sinfo, 0, sizeof(sinfo));
1311 if (!info->attrs[NL80211_ATTR_MAC])
1314 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1316 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
1320 if (!drv->ops->get_station) {
1326 err = drv->ops->get_station(&drv->wiphy, dev, mac_addr, &sinfo);
1332 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
1336 if (nl80211_send_station(msg, info->snd_pid, info->snd_seq, 0,
1337 dev, mac_addr, &sinfo) < 0)
1340 err = genlmsg_unicast(msg, info->snd_pid);
1347 cfg80211_put_dev(drv);
1353 * Get vlan interface making sure it is on the right wiphy.
1355 static int get_vlan(struct nlattr *vlanattr,
1356 struct cfg80211_registered_device *rdev,
1357 struct net_device **vlan)
1362 *vlan = dev_get_by_index(&init_net, nla_get_u32(vlanattr));
1365 if (!(*vlan)->ieee80211_ptr)
1367 if ((*vlan)->ieee80211_ptr->wiphy != &rdev->wiphy)
1373 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
1375 struct cfg80211_registered_device *drv;
1377 struct net_device *dev;
1378 struct station_parameters params;
1379 u8 *mac_addr = NULL;
1381 memset(¶ms, 0, sizeof(params));
1383 params.listen_interval = -1;
1385 if (info->attrs[NL80211_ATTR_STA_AID])
1388 if (!info->attrs[NL80211_ATTR_MAC])
1391 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1393 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
1394 params.supported_rates =
1395 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
1396 params.supported_rates_len =
1397 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
1400 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
1401 params.listen_interval =
1402 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
1404 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
1406 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
1408 if (parse_station_flags(info->attrs[NL80211_ATTR_STA_FLAGS],
1409 ¶ms.station_flags))
1412 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
1413 params.plink_action =
1414 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
1416 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
1420 err = get_vlan(info->attrs[NL80211_ATTR_STA_VLAN], drv, ¶ms.vlan);
1424 if (!drv->ops->change_station) {
1430 err = drv->ops->change_station(&drv->wiphy, dev, mac_addr, ¶ms);
1435 dev_put(params.vlan);
1436 cfg80211_put_dev(drv);
1441 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
1443 struct cfg80211_registered_device *drv;
1445 struct net_device *dev;
1446 struct station_parameters params;
1447 u8 *mac_addr = NULL;
1449 memset(¶ms, 0, sizeof(params));
1451 if (!info->attrs[NL80211_ATTR_MAC])
1454 if (!info->attrs[NL80211_ATTR_STA_AID])
1457 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
1460 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
1463 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1464 params.supported_rates =
1465 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
1466 params.supported_rates_len =
1467 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
1468 params.listen_interval =
1469 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
1470 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
1471 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
1473 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
1475 if (parse_station_flags(info->attrs[NL80211_ATTR_STA_FLAGS],
1476 ¶ms.station_flags))
1479 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
1483 err = get_vlan(info->attrs[NL80211_ATTR_STA_VLAN], drv, ¶ms.vlan);
1487 if (!drv->ops->add_station) {
1493 err = drv->ops->add_station(&drv->wiphy, dev, mac_addr, ¶ms);
1498 dev_put(params.vlan);
1499 cfg80211_put_dev(drv);
1504 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
1506 struct cfg80211_registered_device *drv;
1508 struct net_device *dev;
1509 u8 *mac_addr = NULL;
1511 if (info->attrs[NL80211_ATTR_MAC])
1512 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1514 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
1518 if (!drv->ops->del_station) {
1524 err = drv->ops->del_station(&drv->wiphy, dev, mac_addr);
1528 cfg80211_put_dev(drv);
1533 static int nl80211_send_mpath(struct sk_buff *msg, u32 pid, u32 seq,
1534 int flags, struct net_device *dev,
1535 u8 *dst, u8 *next_hop,
1536 struct mpath_info *pinfo)
1539 struct nlattr *pinfoattr;
1541 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
1545 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
1546 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, dst);
1547 NLA_PUT(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop);
1549 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
1551 goto nla_put_failure;
1552 if (pinfo->filled & MPATH_INFO_FRAME_QLEN)
1553 NLA_PUT_U32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
1555 if (pinfo->filled & MPATH_INFO_DSN)
1556 NLA_PUT_U32(msg, NL80211_MPATH_INFO_DSN,
1558 if (pinfo->filled & MPATH_INFO_METRIC)
1559 NLA_PUT_U32(msg, NL80211_MPATH_INFO_METRIC,
1561 if (pinfo->filled & MPATH_INFO_EXPTIME)
1562 NLA_PUT_U32(msg, NL80211_MPATH_INFO_EXPTIME,
1564 if (pinfo->filled & MPATH_INFO_FLAGS)
1565 NLA_PUT_U8(msg, NL80211_MPATH_INFO_FLAGS,
1567 if (pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT)
1568 NLA_PUT_U32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
1569 pinfo->discovery_timeout);
1570 if (pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES)
1571 NLA_PUT_U8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
1572 pinfo->discovery_retries);
1574 nla_nest_end(msg, pinfoattr);
1576 return genlmsg_end(msg, hdr);
1579 genlmsg_cancel(msg, hdr);
1583 static int nl80211_dump_mpath(struct sk_buff *skb,
1584 struct netlink_callback *cb)
1586 struct mpath_info pinfo;
1587 struct cfg80211_registered_device *dev;
1588 struct net_device *netdev;
1590 u8 next_hop[ETH_ALEN];
1591 int ifidx = cb->args[0];
1592 int path_idx = cb->args[1];
1596 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
1597 nl80211_fam.attrbuf, nl80211_fam.maxattr,
1602 if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX])
1605 ifidx = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]);
1610 netdev = dev_get_by_index(&init_net, ifidx);
1614 dev = cfg80211_get_dev_from_ifindex(ifidx);
1617 goto out_put_netdev;
1620 if (!dev->ops->dump_mpath) {
1628 err = dev->ops->dump_mpath(&dev->wiphy, netdev, path_idx,
1629 dst, next_hop, &pinfo);
1635 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).pid,
1636 cb->nlh->nlmsg_seq, NLM_F_MULTI,
1637 netdev, dst, next_hop,
1646 cb->args[1] = path_idx;
1651 cfg80211_put_dev(dev);
1658 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
1660 struct cfg80211_registered_device *drv;
1662 struct net_device *dev;
1663 struct mpath_info pinfo;
1664 struct sk_buff *msg;
1666 u8 next_hop[ETH_ALEN];
1668 memset(&pinfo, 0, sizeof(pinfo));
1670 if (!info->attrs[NL80211_ATTR_MAC])
1673 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
1675 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
1679 if (!drv->ops->get_mpath) {
1685 err = drv->ops->get_mpath(&drv->wiphy, dev, dst, next_hop, &pinfo);
1691 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
1695 if (nl80211_send_mpath(msg, info->snd_pid, info->snd_seq, 0,
1696 dev, dst, next_hop, &pinfo) < 0)
1699 err = genlmsg_unicast(msg, info->snd_pid);
1706 cfg80211_put_dev(drv);
1711 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
1713 struct cfg80211_registered_device *drv;
1715 struct net_device *dev;
1717 u8 *next_hop = NULL;
1719 if (!info->attrs[NL80211_ATTR_MAC])
1722 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
1725 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
1726 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
1728 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
1732 if (!drv->ops->change_mpath) {
1738 err = drv->ops->change_mpath(&drv->wiphy, dev, dst, next_hop);
1742 cfg80211_put_dev(drv);
1746 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
1748 struct cfg80211_registered_device *drv;
1750 struct net_device *dev;
1752 u8 *next_hop = NULL;
1754 if (!info->attrs[NL80211_ATTR_MAC])
1757 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
1760 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
1761 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
1763 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
1767 if (!drv->ops->add_mpath) {
1773 err = drv->ops->add_mpath(&drv->wiphy, dev, dst, next_hop);
1777 cfg80211_put_dev(drv);
1782 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
1784 struct cfg80211_registered_device *drv;
1786 struct net_device *dev;
1789 if (info->attrs[NL80211_ATTR_MAC])
1790 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
1792 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
1796 if (!drv->ops->del_mpath) {
1802 err = drv->ops->del_mpath(&drv->wiphy, dev, dst);
1806 cfg80211_put_dev(drv);
1811 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
1813 struct cfg80211_registered_device *drv;
1815 struct net_device *dev;
1816 struct bss_parameters params;
1818 memset(¶ms, 0, sizeof(params));
1819 /* default to not changing parameters */
1820 params.use_cts_prot = -1;
1821 params.use_short_preamble = -1;
1822 params.use_short_slot_time = -1;
1824 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
1825 params.use_cts_prot =
1826 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
1827 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
1828 params.use_short_preamble =
1829 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
1830 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
1831 params.use_short_slot_time =
1832 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
1833 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
1834 params.basic_rates =
1835 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
1836 params.basic_rates_len =
1837 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
1840 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
1844 if (!drv->ops->change_bss) {
1850 err = drv->ops->change_bss(&drv->wiphy, dev, ¶ms);
1854 cfg80211_put_dev(drv);
1859 static const struct nla_policy
1860 reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
1861 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
1862 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
1863 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
1864 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
1865 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
1866 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
1869 static int parse_reg_rule(struct nlattr *tb[],
1870 struct ieee80211_reg_rule *reg_rule)
1872 struct ieee80211_freq_range *freq_range = ®_rule->freq_range;
1873 struct ieee80211_power_rule *power_rule = ®_rule->power_rule;
1875 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
1877 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
1879 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
1881 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
1883 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
1886 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
1888 freq_range->start_freq_khz =
1889 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
1890 freq_range->end_freq_khz =
1891 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
1892 freq_range->max_bandwidth_khz =
1893 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
1895 power_rule->max_eirp =
1896 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
1898 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
1899 power_rule->max_antenna_gain =
1900 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
1905 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
1911 * You should only get this when cfg80211 hasn't yet initialized
1912 * completely when built-in to the kernel right between the time
1913 * window between nl80211_init() and regulatory_init(), if that is
1916 mutex_lock(&cfg80211_mutex);
1917 if (unlikely(!cfg80211_regdomain)) {
1922 if (!info->attrs[NL80211_ATTR_REG_ALPHA2]) {
1927 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
1929 #ifdef CONFIG_WIRELESS_OLD_REGULATORY
1930 /* We ignore world regdom requests with the old regdom setup */
1931 if (is_world_regdom(data)) {
1936 r = __regulatory_hint(NULL, REGDOM_SET_BY_USER, data, 0, ENVIRON_ANY);
1938 * This means the regulatory domain was already set, however
1939 * we don't want to confuse userspace with a "successful error"
1940 * message so lets just treat it as a success
1945 mutex_unlock(&cfg80211_mutex);
1949 static int nl80211_get_mesh_params(struct sk_buff *skb,
1950 struct genl_info *info)
1952 struct cfg80211_registered_device *drv;
1953 struct mesh_config cur_params;
1955 struct net_device *dev;
1957 struct nlattr *pinfoattr;
1958 struct sk_buff *msg;
1960 /* Look up our device */
1961 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
1965 /* Get the mesh params */
1967 err = drv->ops->get_mesh_params(&drv->wiphy, dev, &cur_params);
1972 /* Draw up a netlink message to send back */
1973 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
1978 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
1979 NL80211_CMD_GET_MESH_PARAMS);
1981 goto nla_put_failure;
1982 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_PARAMS);
1984 goto nla_put_failure;
1985 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
1986 NLA_PUT_U16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
1987 cur_params.dot11MeshRetryTimeout);
1988 NLA_PUT_U16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
1989 cur_params.dot11MeshConfirmTimeout);
1990 NLA_PUT_U16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
1991 cur_params.dot11MeshHoldingTimeout);
1992 NLA_PUT_U16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
1993 cur_params.dot11MeshMaxPeerLinks);
1994 NLA_PUT_U8(msg, NL80211_MESHCONF_MAX_RETRIES,
1995 cur_params.dot11MeshMaxRetries);
1996 NLA_PUT_U8(msg, NL80211_MESHCONF_TTL,
1997 cur_params.dot11MeshTTL);
1998 NLA_PUT_U8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
1999 cur_params.auto_open_plinks);
2000 NLA_PUT_U8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
2001 cur_params.dot11MeshHWMPmaxPREQretries);
2002 NLA_PUT_U32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
2003 cur_params.path_refresh_time);
2004 NLA_PUT_U16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
2005 cur_params.min_discovery_timeout);
2006 NLA_PUT_U32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
2007 cur_params.dot11MeshHWMPactivePathTimeout);
2008 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
2009 cur_params.dot11MeshHWMPpreqMinInterval);
2010 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
2011 cur_params.dot11MeshHWMPnetDiameterTraversalTime);
2012 nla_nest_end(msg, pinfoattr);
2013 genlmsg_end(msg, hdr);
2014 err = genlmsg_unicast(msg, info->snd_pid);
2018 genlmsg_cancel(msg, hdr);
2022 cfg80211_put_dev(drv);
2027 #define FILL_IN_MESH_PARAM_IF_SET(table, cfg, param, mask, attr_num, nla_fn) \
2029 if (table[attr_num]) {\
2030 cfg.param = nla_fn(table[attr_num]); \
2031 mask |= (1 << (attr_num - 1)); \
2035 static struct nla_policy
2036 nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] __read_mostly = {
2037 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
2038 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
2039 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
2040 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
2041 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
2042 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
2043 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
2045 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
2046 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
2047 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
2048 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
2049 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
2050 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
2053 static int nl80211_set_mesh_params(struct sk_buff *skb, struct genl_info *info)
2057 struct cfg80211_registered_device *drv;
2058 struct net_device *dev;
2059 struct mesh_config cfg;
2060 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
2061 struct nlattr *parent_attr;
2063 parent_attr = info->attrs[NL80211_ATTR_MESH_PARAMS];
2066 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
2067 parent_attr, nl80211_meshconf_params_policy))
2070 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
2074 /* This makes sure that there aren't more than 32 mesh config
2075 * parameters (otherwise our bitfield scheme would not work.) */
2076 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
2078 /* Fill in the params struct */
2080 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout,
2081 mask, NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
2082 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout,
2083 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT, nla_get_u16);
2084 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout,
2085 mask, NL80211_MESHCONF_HOLDING_TIMEOUT, nla_get_u16);
2086 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks,
2087 mask, NL80211_MESHCONF_MAX_PEER_LINKS, nla_get_u16);
2088 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries,
2089 mask, NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
2090 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL,
2091 mask, NL80211_MESHCONF_TTL, nla_get_u8);
2092 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks,
2093 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS, nla_get_u8);
2094 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries,
2095 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
2097 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time,
2098 mask, NL80211_MESHCONF_PATH_REFRESH_TIME, nla_get_u32);
2099 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout,
2100 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
2102 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
2103 mask, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
2105 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
2106 mask, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
2108 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
2109 dot11MeshHWMPnetDiameterTraversalTime,
2110 mask, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
2115 err = drv->ops->set_mesh_params(&drv->wiphy, dev, &cfg, mask);
2119 cfg80211_put_dev(drv);
2124 #undef FILL_IN_MESH_PARAM_IF_SET
2126 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
2128 struct sk_buff *msg;
2130 struct nlattr *nl_reg_rules;
2134 mutex_lock(&cfg80211_mutex);
2136 if (!cfg80211_regdomain)
2139 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
2145 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
2146 NL80211_CMD_GET_REG);
2148 goto nla_put_failure;
2150 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2,
2151 cfg80211_regdomain->alpha2);
2153 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
2155 goto nla_put_failure;
2157 for (i = 0; i < cfg80211_regdomain->n_reg_rules; i++) {
2158 struct nlattr *nl_reg_rule;
2159 const struct ieee80211_reg_rule *reg_rule;
2160 const struct ieee80211_freq_range *freq_range;
2161 const struct ieee80211_power_rule *power_rule;
2163 reg_rule = &cfg80211_regdomain->reg_rules[i];
2164 freq_range = ®_rule->freq_range;
2165 power_rule = ®_rule->power_rule;
2167 nl_reg_rule = nla_nest_start(msg, i);
2169 goto nla_put_failure;
2171 NLA_PUT_U32(msg, NL80211_ATTR_REG_RULE_FLAGS,
2173 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_START,
2174 freq_range->start_freq_khz);
2175 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_END,
2176 freq_range->end_freq_khz);
2177 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
2178 freq_range->max_bandwidth_khz);
2179 NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
2180 power_rule->max_antenna_gain);
2181 NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
2182 power_rule->max_eirp);
2184 nla_nest_end(msg, nl_reg_rule);
2187 nla_nest_end(msg, nl_reg_rules);
2189 genlmsg_end(msg, hdr);
2190 err = genlmsg_unicast(msg, info->snd_pid);
2194 genlmsg_cancel(msg, hdr);
2197 mutex_unlock(&cfg80211_mutex);
2201 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
2203 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
2204 struct nlattr *nl_reg_rule;
2205 char *alpha2 = NULL;
2206 int rem_reg_rules = 0, r = 0;
2207 u32 num_rules = 0, rule_idx = 0, size_of_regd;
2208 struct ieee80211_regdomain *rd = NULL;
2210 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
2213 if (!info->attrs[NL80211_ATTR_REG_RULES])
2216 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
2218 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
2221 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
2225 if (!reg_is_valid_request(alpha2))
2228 size_of_regd = sizeof(struct ieee80211_regdomain) +
2229 (num_rules * sizeof(struct ieee80211_reg_rule));
2231 rd = kzalloc(size_of_regd, GFP_KERNEL);
2235 rd->n_reg_rules = num_rules;
2236 rd->alpha2[0] = alpha2[0];
2237 rd->alpha2[1] = alpha2[1];
2239 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
2241 nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
2242 nla_data(nl_reg_rule), nla_len(nl_reg_rule),
2244 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
2250 if (rule_idx > NL80211_MAX_SUPP_REG_RULES)
2254 BUG_ON(rule_idx != num_rules);
2256 mutex_lock(&cfg80211_mutex);
2258 mutex_unlock(&cfg80211_mutex);
2266 static int nl80211_set_mgmt_extra_ie(struct sk_buff *skb,
2267 struct genl_info *info)
2269 struct cfg80211_registered_device *drv;
2271 struct net_device *dev;
2272 struct mgmt_extra_ie_params params;
2274 memset(¶ms, 0, sizeof(params));
2276 if (!info->attrs[NL80211_ATTR_MGMT_SUBTYPE])
2278 params.subtype = nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
2279 if (params.subtype > 15)
2280 return -EINVAL; /* FC Subtype field is 4 bits (0..15) */
2282 if (info->attrs[NL80211_ATTR_IE]) {
2283 params.ies = nla_data(info->attrs[NL80211_ATTR_IE]);
2284 params.ies_len = nla_len(info->attrs[NL80211_ATTR_IE]);
2287 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
2291 if (drv->ops->set_mgmt_extra_ie) {
2293 err = drv->ops->set_mgmt_extra_ie(&drv->wiphy, dev, ¶ms);
2298 cfg80211_put_dev(drv);
2303 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
2305 struct cfg80211_registered_device *drv;
2306 struct net_device *dev;
2307 struct cfg80211_scan_request *request;
2308 struct cfg80211_ssid *ssid;
2309 struct ieee80211_channel *channel;
2310 struct nlattr *attr;
2311 struct wiphy *wiphy;
2312 int err, tmp, n_ssids = 0, n_channels = 0, i;
2313 enum ieee80211_band band;
2316 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
2320 wiphy = &drv->wiphy;
2322 if (!drv->ops->scan) {
2329 if (drv->scan_req) {
2334 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
2335 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp)
2342 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
2343 if (wiphy->bands[band])
2344 n_channels += wiphy->bands[band]->n_channels;
2347 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
2348 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
2351 if (n_ssids > wiphy->max_scan_ssids) {
2356 if (info->attrs[NL80211_ATTR_IE])
2357 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
2361 request = kzalloc(sizeof(*request)
2362 + sizeof(*ssid) * n_ssids
2363 + sizeof(channel) * n_channels
2364 + ie_len, GFP_KERNEL);
2370 request->channels = (void *)((char *)request + sizeof(*request));
2371 request->n_channels = n_channels;
2373 request->ssids = (void *)(request->channels + n_channels);
2374 request->n_ssids = n_ssids;
2377 request->ie = (void *)(request->ssids + n_ssids);
2379 request->ie = (void *)(request->channels + n_channels);
2382 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
2383 /* user specified, bail out if channel not found */
2384 request->n_channels = n_channels;
2386 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
2387 request->channels[i] = ieee80211_get_channel(wiphy, nla_get_u32(attr));
2388 if (!request->channels[i]) {
2397 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
2399 if (!wiphy->bands[band])
2401 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
2402 request->channels[i] = &wiphy->bands[band]->channels[j];
2409 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
2410 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
2411 if (request->ssids[i].ssid_len > IEEE80211_MAX_SSID_LEN) {
2415 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
2416 request->ssids[i].ssid_len = nla_len(attr);
2421 if (info->attrs[NL80211_ATTR_IE]) {
2422 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
2423 memcpy(request->ie, nla_data(info->attrs[NL80211_ATTR_IE]),
2427 request->ifidx = dev->ifindex;
2428 request->wiphy = &drv->wiphy;
2430 drv->scan_req = request;
2431 err = drv->ops->scan(&drv->wiphy, dev, request);
2435 drv->scan_req = NULL;
2441 cfg80211_put_dev(drv);
2446 static int nl80211_send_bss(struct sk_buff *msg, u32 pid, u32 seq, int flags,
2447 struct cfg80211_registered_device *rdev,
2448 struct net_device *dev,
2449 struct cfg80211_bss *res)
2454 hdr = nl80211hdr_put(msg, pid, seq, flags,
2455 NL80211_CMD_NEW_SCAN_RESULTS);
2459 NLA_PUT_U32(msg, NL80211_ATTR_SCAN_GENERATION,
2460 rdev->bss_generation);
2461 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
2463 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
2465 goto nla_put_failure;
2466 if (!is_zero_ether_addr(res->bssid))
2467 NLA_PUT(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid);
2468 if (res->information_elements && res->len_information_elements)
2469 NLA_PUT(msg, NL80211_BSS_INFORMATION_ELEMENTS,
2470 res->len_information_elements,
2471 res->information_elements);
2473 NLA_PUT_U64(msg, NL80211_BSS_TSF, res->tsf);
2474 if (res->beacon_interval)
2475 NLA_PUT_U16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval);
2476 NLA_PUT_U16(msg, NL80211_BSS_CAPABILITY, res->capability);
2477 NLA_PUT_U32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq);
2479 switch (rdev->wiphy.signal_type) {
2480 case CFG80211_SIGNAL_TYPE_MBM:
2481 NLA_PUT_U32(msg, NL80211_BSS_SIGNAL_MBM, res->signal);
2483 case CFG80211_SIGNAL_TYPE_UNSPEC:
2484 NLA_PUT_U8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal);
2490 nla_nest_end(msg, bss);
2492 return genlmsg_end(msg, hdr);
2495 genlmsg_cancel(msg, hdr);
2499 static int nl80211_dump_scan(struct sk_buff *skb,
2500 struct netlink_callback *cb)
2502 struct cfg80211_registered_device *dev;
2503 struct net_device *netdev;
2504 struct cfg80211_internal_bss *scan;
2505 int ifidx = cb->args[0];
2506 int start = cb->args[1], idx = 0;
2510 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
2511 nl80211_fam.attrbuf, nl80211_fam.maxattr,
2516 if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX])
2519 ifidx = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]);
2522 cb->args[0] = ifidx;
2525 netdev = dev_get_by_index(&init_net, ifidx);
2529 dev = cfg80211_get_dev_from_ifindex(ifidx);
2532 goto out_put_netdev;
2535 spin_lock_bh(&dev->bss_lock);
2536 cfg80211_bss_expire(dev);
2538 list_for_each_entry(scan, &dev->bss_list, list) {
2541 if (nl80211_send_bss(skb,
2542 NETLINK_CB(cb->skb).pid,
2543 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2544 dev, netdev, &scan->pub) < 0) {
2551 spin_unlock_bh(&dev->bss_lock);
2555 cfg80211_put_dev(dev);
2562 static struct genl_ops nl80211_ops[] = {
2564 .cmd = NL80211_CMD_GET_WIPHY,
2565 .doit = nl80211_get_wiphy,
2566 .dumpit = nl80211_dump_wiphy,
2567 .policy = nl80211_policy,
2568 /* can be retrieved by unprivileged users */
2571 .cmd = NL80211_CMD_SET_WIPHY,
2572 .doit = nl80211_set_wiphy,
2573 .policy = nl80211_policy,
2574 .flags = GENL_ADMIN_PERM,
2577 .cmd = NL80211_CMD_GET_INTERFACE,
2578 .doit = nl80211_get_interface,
2579 .dumpit = nl80211_dump_interface,
2580 .policy = nl80211_policy,
2581 /* can be retrieved by unprivileged users */
2584 .cmd = NL80211_CMD_SET_INTERFACE,
2585 .doit = nl80211_set_interface,
2586 .policy = nl80211_policy,
2587 .flags = GENL_ADMIN_PERM,
2590 .cmd = NL80211_CMD_NEW_INTERFACE,
2591 .doit = nl80211_new_interface,
2592 .policy = nl80211_policy,
2593 .flags = GENL_ADMIN_PERM,
2596 .cmd = NL80211_CMD_DEL_INTERFACE,
2597 .doit = nl80211_del_interface,
2598 .policy = nl80211_policy,
2599 .flags = GENL_ADMIN_PERM,
2602 .cmd = NL80211_CMD_GET_KEY,
2603 .doit = nl80211_get_key,
2604 .policy = nl80211_policy,
2605 .flags = GENL_ADMIN_PERM,
2608 .cmd = NL80211_CMD_SET_KEY,
2609 .doit = nl80211_set_key,
2610 .policy = nl80211_policy,
2611 .flags = GENL_ADMIN_PERM,
2614 .cmd = NL80211_CMD_NEW_KEY,
2615 .doit = nl80211_new_key,
2616 .policy = nl80211_policy,
2617 .flags = GENL_ADMIN_PERM,
2620 .cmd = NL80211_CMD_DEL_KEY,
2621 .doit = nl80211_del_key,
2622 .policy = nl80211_policy,
2623 .flags = GENL_ADMIN_PERM,
2626 .cmd = NL80211_CMD_SET_BEACON,
2627 .policy = nl80211_policy,
2628 .flags = GENL_ADMIN_PERM,
2629 .doit = nl80211_addset_beacon,
2632 .cmd = NL80211_CMD_NEW_BEACON,
2633 .policy = nl80211_policy,
2634 .flags = GENL_ADMIN_PERM,
2635 .doit = nl80211_addset_beacon,
2638 .cmd = NL80211_CMD_DEL_BEACON,
2639 .policy = nl80211_policy,
2640 .flags = GENL_ADMIN_PERM,
2641 .doit = nl80211_del_beacon,
2644 .cmd = NL80211_CMD_GET_STATION,
2645 .doit = nl80211_get_station,
2646 .dumpit = nl80211_dump_station,
2647 .policy = nl80211_policy,
2650 .cmd = NL80211_CMD_SET_STATION,
2651 .doit = nl80211_set_station,
2652 .policy = nl80211_policy,
2653 .flags = GENL_ADMIN_PERM,
2656 .cmd = NL80211_CMD_NEW_STATION,
2657 .doit = nl80211_new_station,
2658 .policy = nl80211_policy,
2659 .flags = GENL_ADMIN_PERM,
2662 .cmd = NL80211_CMD_DEL_STATION,
2663 .doit = nl80211_del_station,
2664 .policy = nl80211_policy,
2665 .flags = GENL_ADMIN_PERM,
2668 .cmd = NL80211_CMD_GET_MPATH,
2669 .doit = nl80211_get_mpath,
2670 .dumpit = nl80211_dump_mpath,
2671 .policy = nl80211_policy,
2672 .flags = GENL_ADMIN_PERM,
2675 .cmd = NL80211_CMD_SET_MPATH,
2676 .doit = nl80211_set_mpath,
2677 .policy = nl80211_policy,
2678 .flags = GENL_ADMIN_PERM,
2681 .cmd = NL80211_CMD_NEW_MPATH,
2682 .doit = nl80211_new_mpath,
2683 .policy = nl80211_policy,
2684 .flags = GENL_ADMIN_PERM,
2687 .cmd = NL80211_CMD_DEL_MPATH,
2688 .doit = nl80211_del_mpath,
2689 .policy = nl80211_policy,
2690 .flags = GENL_ADMIN_PERM,
2693 .cmd = NL80211_CMD_SET_BSS,
2694 .doit = nl80211_set_bss,
2695 .policy = nl80211_policy,
2696 .flags = GENL_ADMIN_PERM,
2699 .cmd = NL80211_CMD_GET_REG,
2700 .doit = nl80211_get_reg,
2701 .policy = nl80211_policy,
2702 /* can be retrieved by unprivileged users */
2705 .cmd = NL80211_CMD_SET_REG,
2706 .doit = nl80211_set_reg,
2707 .policy = nl80211_policy,
2708 .flags = GENL_ADMIN_PERM,
2711 .cmd = NL80211_CMD_REQ_SET_REG,
2712 .doit = nl80211_req_set_reg,
2713 .policy = nl80211_policy,
2714 .flags = GENL_ADMIN_PERM,
2717 .cmd = NL80211_CMD_GET_MESH_PARAMS,
2718 .doit = nl80211_get_mesh_params,
2719 .policy = nl80211_policy,
2720 /* can be retrieved by unprivileged users */
2723 .cmd = NL80211_CMD_SET_MESH_PARAMS,
2724 .doit = nl80211_set_mesh_params,
2725 .policy = nl80211_policy,
2726 .flags = GENL_ADMIN_PERM,
2729 .cmd = NL80211_CMD_SET_MGMT_EXTRA_IE,
2730 .doit = nl80211_set_mgmt_extra_ie,
2731 .policy = nl80211_policy,
2732 .flags = GENL_ADMIN_PERM,
2735 .cmd = NL80211_CMD_TRIGGER_SCAN,
2736 .doit = nl80211_trigger_scan,
2737 .policy = nl80211_policy,
2738 .flags = GENL_ADMIN_PERM,
2741 .cmd = NL80211_CMD_GET_SCAN,
2742 .policy = nl80211_policy,
2743 .dumpit = nl80211_dump_scan,
2747 /* multicast groups */
2748 static struct genl_multicast_group nl80211_config_mcgrp = {
2751 static struct genl_multicast_group nl80211_scan_mcgrp = {
2755 /* notification functions */
2757 void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev)
2759 struct sk_buff *msg;
2761 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
2765 if (nl80211_send_wiphy(msg, 0, 0, 0, rdev) < 0) {
2770 genlmsg_multicast(msg, 0, nl80211_config_mcgrp.id, GFP_KERNEL);
2773 static int nl80211_send_scan_donemsg(struct sk_buff *msg,
2774 struct cfg80211_registered_device *rdev,
2775 struct net_device *netdev,
2776 u32 pid, u32 seq, int flags,
2781 hdr = nl80211hdr_put(msg, pid, seq, flags, cmd);
2785 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
2786 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
2788 /* XXX: we should probably bounce back the request? */
2790 return genlmsg_end(msg, hdr);
2793 genlmsg_cancel(msg, hdr);
2797 void nl80211_send_scan_done(struct cfg80211_registered_device *rdev,
2798 struct net_device *netdev)
2800 struct sk_buff *msg;
2802 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
2806 if (nl80211_send_scan_donemsg(msg, rdev, netdev, 0, 0, 0,
2807 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
2812 genlmsg_multicast(msg, 0, nl80211_scan_mcgrp.id, GFP_KERNEL);
2815 void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev,
2816 struct net_device *netdev)
2818 struct sk_buff *msg;
2820 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
2824 if (nl80211_send_scan_donemsg(msg, rdev, netdev, 0, 0, 0,
2825 NL80211_CMD_SCAN_ABORTED) < 0) {
2830 genlmsg_multicast(msg, 0, nl80211_scan_mcgrp.id, GFP_KERNEL);
2833 /* initialisation/exit functions */
2835 int nl80211_init(void)
2839 err = genl_register_family(&nl80211_fam);
2843 for (i = 0; i < ARRAY_SIZE(nl80211_ops); i++) {
2844 err = genl_register_ops(&nl80211_fam, &nl80211_ops[i]);
2849 err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp);
2853 err = genl_register_mc_group(&nl80211_fam, &nl80211_scan_mcgrp);
2859 genl_unregister_family(&nl80211_fam);
2863 void nl80211_exit(void)
2865 genl_unregister_family(&nl80211_fam);