Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2002-2005, Instant802 Networks, Inc. |
| 3 | * Copyright 2005-2006, Devicescape Software, Inc. |
| 4 | * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz> |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License version 2 as |
| 8 | * published by the Free Software Foundation. |
| 9 | */ |
| 10 | |
| 11 | #include <net/mac80211.h> |
| 12 | #include <net/ieee80211_radiotap.h> |
| 13 | #include <linux/module.h> |
| 14 | #include <linux/init.h> |
| 15 | #include <linux/netdevice.h> |
| 16 | #include <linux/types.h> |
| 17 | #include <linux/slab.h> |
| 18 | #include <linux/skbuff.h> |
| 19 | #include <linux/etherdevice.h> |
| 20 | #include <linux/if_arp.h> |
| 21 | #include <linux/wireless.h> |
| 22 | #include <linux/rtnetlink.h> |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 23 | #include <linux/bitmap.h> |
| 24 | #include <net/cfg80211.h> |
| 25 | |
| 26 | #include "ieee80211_common.h" |
| 27 | #include "ieee80211_i.h" |
| 28 | #include "ieee80211_rate.h" |
| 29 | #include "wep.h" |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 30 | #include "wme.h" |
| 31 | #include "aes_ccm.h" |
| 32 | #include "ieee80211_led.h" |
| 33 | #include "ieee80211_cfg.h" |
Jiri Benc | e9f207f | 2007-05-05 11:46:38 -0700 | [diff] [blame] | 34 | #include "debugfs.h" |
| 35 | #include "debugfs_netdev.h" |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 36 | |
| 37 | /* privid for wiphys to determine whether they belong to us or not */ |
| 38 | void *mac80211_wiphy_privid = &mac80211_wiphy_privid; |
| 39 | |
| 40 | /* See IEEE 802.1H for LLC/SNAP encapsulation/decapsulation */ |
| 41 | /* Ethernet-II snap header (RFC1042 for most EtherTypes) */ |
Johannes Berg | 571ecf6 | 2007-07-27 15:43:22 +0200 | [diff] [blame] | 42 | const unsigned char rfc1042_header[] = |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 43 | { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 }; |
| 44 | |
| 45 | /* Bridge-Tunnel header (for EtherTypes ETH_P_AARP and ETH_P_IPX) */ |
Johannes Berg | 571ecf6 | 2007-07-27 15:43:22 +0200 | [diff] [blame] | 46 | const unsigned char bridge_tunnel_header[] = |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 47 | { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0xf8 }; |
| 48 | |
| 49 | /* No encapsulation header if EtherType < 0x600 (=length) */ |
| 50 | static const unsigned char eapol_header[] = |
| 51 | { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00, 0x88, 0x8e }; |
| 52 | |
| 53 | |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 54 | /* |
| 55 | * For seeing transmitted packets on monitor interfaces |
| 56 | * we have a radiotap header too. |
| 57 | */ |
| 58 | struct ieee80211_tx_status_rtap_hdr { |
| 59 | struct ieee80211_radiotap_header hdr; |
| 60 | __le16 tx_flags; |
| 61 | u8 data_retries; |
| 62 | } __attribute__ ((packed)); |
| 63 | |
| 64 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 65 | static int rate_list_match(const int *rate_list, int rate) |
| 66 | { |
| 67 | int i; |
| 68 | |
| 69 | if (!rate_list) |
| 70 | return 0; |
| 71 | |
| 72 | for (i = 0; rate_list[i] >= 0; i++) |
| 73 | if (rate_list[i] == rate) |
| 74 | return 1; |
| 75 | |
| 76 | return 0; |
| 77 | } |
| 78 | |
| 79 | |
| 80 | void ieee80211_prepare_rates(struct ieee80211_local *local, |
| 81 | struct ieee80211_hw_mode *mode) |
| 82 | { |
| 83 | int i; |
| 84 | |
| 85 | for (i = 0; i < mode->num_rates; i++) { |
| 86 | struct ieee80211_rate *rate = &mode->rates[i]; |
| 87 | |
| 88 | rate->flags &= ~(IEEE80211_RATE_SUPPORTED | |
| 89 | IEEE80211_RATE_BASIC); |
| 90 | |
| 91 | if (local->supp_rates[mode->mode]) { |
| 92 | if (!rate_list_match(local->supp_rates[mode->mode], |
| 93 | rate->rate)) |
| 94 | continue; |
| 95 | } |
| 96 | |
| 97 | rate->flags |= IEEE80211_RATE_SUPPORTED; |
| 98 | |
| 99 | /* Use configured basic rate set if it is available. If not, |
| 100 | * use defaults that are sane for most cases. */ |
| 101 | if (local->basic_rates[mode->mode]) { |
| 102 | if (rate_list_match(local->basic_rates[mode->mode], |
| 103 | rate->rate)) |
| 104 | rate->flags |= IEEE80211_RATE_BASIC; |
| 105 | } else switch (mode->mode) { |
| 106 | case MODE_IEEE80211A: |
| 107 | if (rate->rate == 60 || rate->rate == 120 || |
| 108 | rate->rate == 240) |
| 109 | rate->flags |= IEEE80211_RATE_BASIC; |
| 110 | break; |
| 111 | case MODE_IEEE80211B: |
| 112 | if (rate->rate == 10 || rate->rate == 20) |
| 113 | rate->flags |= IEEE80211_RATE_BASIC; |
| 114 | break; |
| 115 | case MODE_ATHEROS_TURBO: |
| 116 | if (rate->rate == 120 || rate->rate == 240 || |
| 117 | rate->rate == 480) |
| 118 | rate->flags |= IEEE80211_RATE_BASIC; |
| 119 | break; |
| 120 | case MODE_IEEE80211G: |
| 121 | if (rate->rate == 10 || rate->rate == 20 || |
| 122 | rate->rate == 55 || rate->rate == 110) |
| 123 | rate->flags |= IEEE80211_RATE_BASIC; |
| 124 | break; |
| 125 | } |
| 126 | |
| 127 | /* Set ERP and MANDATORY flags based on phymode */ |
| 128 | switch (mode->mode) { |
| 129 | case MODE_IEEE80211A: |
| 130 | if (rate->rate == 60 || rate->rate == 120 || |
| 131 | rate->rate == 240) |
| 132 | rate->flags |= IEEE80211_RATE_MANDATORY; |
| 133 | break; |
| 134 | case MODE_IEEE80211B: |
| 135 | if (rate->rate == 10) |
| 136 | rate->flags |= IEEE80211_RATE_MANDATORY; |
| 137 | break; |
| 138 | case MODE_ATHEROS_TURBO: |
| 139 | break; |
| 140 | case MODE_IEEE80211G: |
| 141 | if (rate->rate == 10 || rate->rate == 20 || |
| 142 | rate->rate == 55 || rate->rate == 110 || |
| 143 | rate->rate == 60 || rate->rate == 120 || |
| 144 | rate->rate == 240) |
| 145 | rate->flags |= IEEE80211_RATE_MANDATORY; |
| 146 | break; |
| 147 | } |
| 148 | if (ieee80211_is_erp_rate(mode->mode, rate->rate)) |
| 149 | rate->flags |= IEEE80211_RATE_ERP; |
| 150 | } |
| 151 | } |
| 152 | |
| 153 | |
Johannes Berg | 571ecf6 | 2007-07-27 15:43:22 +0200 | [diff] [blame] | 154 | void ieee80211_key_threshold_notify(struct net_device *dev, |
| 155 | struct ieee80211_key *key, |
| 156 | struct sta_info *sta) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 157 | { |
| 158 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); |
| 159 | struct sk_buff *skb; |
| 160 | struct ieee80211_msg_key_notification *msg; |
| 161 | |
| 162 | /* if no one will get it anyway, don't even allocate it. |
| 163 | * unlikely because this is only relevant for APs |
| 164 | * where the device must be open... */ |
| 165 | if (unlikely(!local->apdev)) |
| 166 | return; |
| 167 | |
| 168 | skb = dev_alloc_skb(sizeof(struct ieee80211_frame_info) + |
| 169 | sizeof(struct ieee80211_msg_key_notification)); |
| 170 | if (!skb) |
| 171 | return; |
| 172 | |
| 173 | skb_reserve(skb, sizeof(struct ieee80211_frame_info)); |
| 174 | msg = (struct ieee80211_msg_key_notification *) |
| 175 | skb_put(skb, sizeof(struct ieee80211_msg_key_notification)); |
| 176 | msg->tx_rx_count = key->tx_rx_count; |
| 177 | memcpy(msg->ifname, dev->name, IFNAMSIZ); |
| 178 | if (sta) |
| 179 | memcpy(msg->addr, sta->addr, ETH_ALEN); |
| 180 | else |
| 181 | memset(msg->addr, 0xff, ETH_ALEN); |
| 182 | |
| 183 | key->tx_rx_count = 0; |
| 184 | |
| 185 | ieee80211_rx_mgmt(local, skb, NULL, |
| 186 | ieee80211_msg_key_threshold_notification); |
| 187 | } |
| 188 | |
| 189 | |
Johannes Berg | 571ecf6 | 2007-07-27 15:43:22 +0200 | [diff] [blame] | 190 | u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 191 | { |
| 192 | u16 fc; |
| 193 | |
| 194 | if (len < 24) |
| 195 | return NULL; |
| 196 | |
| 197 | fc = le16_to_cpu(hdr->frame_control); |
| 198 | |
| 199 | switch (fc & IEEE80211_FCTL_FTYPE) { |
| 200 | case IEEE80211_FTYPE_DATA: |
| 201 | switch (fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) { |
| 202 | case IEEE80211_FCTL_TODS: |
| 203 | return hdr->addr1; |
| 204 | case (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS): |
| 205 | return NULL; |
| 206 | case IEEE80211_FCTL_FROMDS: |
| 207 | return hdr->addr2; |
| 208 | case 0: |
| 209 | return hdr->addr3; |
| 210 | } |
| 211 | break; |
| 212 | case IEEE80211_FTYPE_MGMT: |
| 213 | return hdr->addr3; |
| 214 | case IEEE80211_FTYPE_CTL: |
| 215 | if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_PSPOLL) |
| 216 | return hdr->addr1; |
| 217 | else |
| 218 | return NULL; |
| 219 | } |
| 220 | |
| 221 | return NULL; |
| 222 | } |
| 223 | |
| 224 | int ieee80211_get_hdrlen(u16 fc) |
| 225 | { |
| 226 | int hdrlen = 24; |
| 227 | |
| 228 | switch (fc & IEEE80211_FCTL_FTYPE) { |
| 229 | case IEEE80211_FTYPE_DATA: |
| 230 | if ((fc & IEEE80211_FCTL_FROMDS) && (fc & IEEE80211_FCTL_TODS)) |
| 231 | hdrlen = 30; /* Addr4 */ |
| 232 | /* |
| 233 | * The QoS Control field is two bytes and its presence is |
| 234 | * indicated by the IEEE80211_STYPE_QOS_DATA bit. Add 2 to |
| 235 | * hdrlen if that bit is set. |
| 236 | * This works by masking out the bit and shifting it to |
| 237 | * bit position 1 so the result has the value 0 or 2. |
| 238 | */ |
| 239 | hdrlen += (fc & IEEE80211_STYPE_QOS_DATA) |
| 240 | >> (ilog2(IEEE80211_STYPE_QOS_DATA)-1); |
| 241 | break; |
| 242 | case IEEE80211_FTYPE_CTL: |
| 243 | /* |
| 244 | * ACK and CTS are 10 bytes, all others 16. To see how |
| 245 | * to get this condition consider |
| 246 | * subtype mask: 0b0000000011110000 (0x00F0) |
| 247 | * ACK subtype: 0b0000000011010000 (0x00D0) |
| 248 | * CTS subtype: 0b0000000011000000 (0x00C0) |
| 249 | * bits that matter: ^^^ (0x00E0) |
| 250 | * value of those: 0b0000000011000000 (0x00C0) |
| 251 | */ |
| 252 | if ((fc & 0xE0) == 0xC0) |
| 253 | hdrlen = 10; |
| 254 | else |
| 255 | hdrlen = 16; |
| 256 | break; |
| 257 | } |
| 258 | |
| 259 | return hdrlen; |
| 260 | } |
| 261 | EXPORT_SYMBOL(ieee80211_get_hdrlen); |
| 262 | |
| 263 | int ieee80211_get_hdrlen_from_skb(const struct sk_buff *skb) |
| 264 | { |
| 265 | const struct ieee80211_hdr *hdr = (const struct ieee80211_hdr *) skb->data; |
| 266 | int hdrlen; |
| 267 | |
| 268 | if (unlikely(skb->len < 10)) |
| 269 | return 0; |
| 270 | hdrlen = ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_control)); |
| 271 | if (unlikely(hdrlen > skb->len)) |
| 272 | return 0; |
| 273 | return hdrlen; |
| 274 | } |
| 275 | EXPORT_SYMBOL(ieee80211_get_hdrlen_from_skb); |
| 276 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 277 | |
Johannes Berg | 571ecf6 | 2007-07-27 15:43:22 +0200 | [diff] [blame] | 278 | int ieee80211_is_eapol(const struct sk_buff *skb) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 279 | { |
| 280 | const struct ieee80211_hdr *hdr; |
| 281 | u16 fc; |
| 282 | int hdrlen; |
| 283 | |
| 284 | if (unlikely(skb->len < 10)) |
| 285 | return 0; |
| 286 | |
| 287 | hdr = (const struct ieee80211_hdr *) skb->data; |
| 288 | fc = le16_to_cpu(hdr->frame_control); |
| 289 | |
| 290 | if (unlikely(!WLAN_FC_DATA_PRESENT(fc))) |
| 291 | return 0; |
| 292 | |
| 293 | hdrlen = ieee80211_get_hdrlen(fc); |
| 294 | |
| 295 | if (unlikely(skb->len >= hdrlen + sizeof(eapol_header) && |
| 296 | memcmp(skb->data + hdrlen, eapol_header, |
| 297 | sizeof(eapol_header)) == 0)) |
| 298 | return 1; |
| 299 | |
| 300 | return 0; |
| 301 | } |
| 302 | |
| 303 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 304 | void ieee80211_tx_set_iswep(struct ieee80211_txrx_data *tx) |
| 305 | { |
| 306 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) tx->skb->data; |
| 307 | |
| 308 | hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); |
| 309 | if (tx->u.tx.extra_frag) { |
| 310 | struct ieee80211_hdr *fhdr; |
| 311 | int i; |
| 312 | for (i = 0; i < tx->u.tx.num_extra_frag; i++) { |
| 313 | fhdr = (struct ieee80211_hdr *) |
| 314 | tx->u.tx.extra_frag[i]->data; |
| 315 | fhdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); |
| 316 | } |
| 317 | } |
| 318 | } |
| 319 | |
| 320 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 321 | static int ieee80211_frame_duration(struct ieee80211_local *local, size_t len, |
| 322 | int rate, int erp, int short_preamble) |
| 323 | { |
| 324 | int dur; |
| 325 | |
| 326 | /* calculate duration (in microseconds, rounded up to next higher |
| 327 | * integer if it includes a fractional microsecond) to send frame of |
| 328 | * len bytes (does not include FCS) at the given rate. Duration will |
| 329 | * also include SIFS. |
| 330 | * |
| 331 | * rate is in 100 kbps, so divident is multiplied by 10 in the |
| 332 | * DIV_ROUND_UP() operations. |
| 333 | */ |
| 334 | |
| 335 | if (local->hw.conf.phymode == MODE_IEEE80211A || erp || |
| 336 | local->hw.conf.phymode == MODE_ATHEROS_TURBO) { |
| 337 | /* |
| 338 | * OFDM: |
| 339 | * |
| 340 | * N_DBPS = DATARATE x 4 |
| 341 | * N_SYM = Ceiling((16+8xLENGTH+6) / N_DBPS) |
| 342 | * (16 = SIGNAL time, 6 = tail bits) |
| 343 | * TXTIME = T_PREAMBLE + T_SIGNAL + T_SYM x N_SYM + Signal Ext |
| 344 | * |
| 345 | * T_SYM = 4 usec |
| 346 | * 802.11a - 17.5.2: aSIFSTime = 16 usec |
| 347 | * 802.11g - 19.8.4: aSIFSTime = 10 usec + |
| 348 | * signal ext = 6 usec |
| 349 | */ |
| 350 | /* FIX: Atheros Turbo may have different (shorter) duration? */ |
| 351 | dur = 16; /* SIFS + signal ext */ |
| 352 | dur += 16; /* 17.3.2.3: T_PREAMBLE = 16 usec */ |
| 353 | dur += 4; /* 17.3.2.3: T_SIGNAL = 4 usec */ |
| 354 | dur += 4 * DIV_ROUND_UP((16 + 8 * (len + 4) + 6) * 10, |
| 355 | 4 * rate); /* T_SYM x N_SYM */ |
| 356 | } else { |
| 357 | /* |
| 358 | * 802.11b or 802.11g with 802.11b compatibility: |
| 359 | * 18.3.4: TXTIME = PreambleLength + PLCPHeaderTime + |
| 360 | * Ceiling(((LENGTH+PBCC)x8)/DATARATE). PBCC=0. |
| 361 | * |
| 362 | * 802.11 (DS): 15.3.3, 802.11b: 18.3.4 |
| 363 | * aSIFSTime = 10 usec |
| 364 | * aPreambleLength = 144 usec or 72 usec with short preamble |
| 365 | * aPLCPHeaderLength = 48 usec or 24 usec with short preamble |
| 366 | */ |
| 367 | dur = 10; /* aSIFSTime = 10 usec */ |
| 368 | dur += short_preamble ? (72 + 24) : (144 + 48); |
| 369 | |
| 370 | dur += DIV_ROUND_UP(8 * (len + 4) * 10, rate); |
| 371 | } |
| 372 | |
| 373 | return dur; |
| 374 | } |
| 375 | |
| 376 | |
| 377 | /* Exported duration function for driver use */ |
| 378 | __le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw, |
| 379 | size_t frame_len, int rate) |
| 380 | { |
| 381 | struct ieee80211_local *local = hw_to_local(hw); |
| 382 | u16 dur; |
| 383 | int erp; |
| 384 | |
| 385 | erp = ieee80211_is_erp_rate(hw->conf.phymode, rate); |
| 386 | dur = ieee80211_frame_duration(local, frame_len, rate, |
| 387 | erp, local->short_preamble); |
| 388 | |
| 389 | return cpu_to_le16(dur); |
| 390 | } |
| 391 | EXPORT_SYMBOL(ieee80211_generic_frame_duration); |
| 392 | |
| 393 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 394 | __le16 ieee80211_rts_duration(struct ieee80211_hw *hw, |
| 395 | size_t frame_len, |
| 396 | const struct ieee80211_tx_control *frame_txctl) |
| 397 | { |
| 398 | struct ieee80211_local *local = hw_to_local(hw); |
| 399 | struct ieee80211_rate *rate; |
| 400 | int short_preamble = local->short_preamble; |
| 401 | int erp; |
| 402 | u16 dur; |
| 403 | |
| 404 | rate = frame_txctl->rts_rate; |
| 405 | erp = !!(rate->flags & IEEE80211_RATE_ERP); |
| 406 | |
| 407 | /* CTS duration */ |
| 408 | dur = ieee80211_frame_duration(local, 10, rate->rate, |
| 409 | erp, short_preamble); |
| 410 | /* Data frame duration */ |
| 411 | dur += ieee80211_frame_duration(local, frame_len, rate->rate, |
| 412 | erp, short_preamble); |
| 413 | /* ACK duration */ |
| 414 | dur += ieee80211_frame_duration(local, 10, rate->rate, |
| 415 | erp, short_preamble); |
| 416 | |
| 417 | return cpu_to_le16(dur); |
| 418 | } |
| 419 | EXPORT_SYMBOL(ieee80211_rts_duration); |
| 420 | |
| 421 | |
| 422 | __le16 ieee80211_ctstoself_duration(struct ieee80211_hw *hw, |
| 423 | size_t frame_len, |
| 424 | const struct ieee80211_tx_control *frame_txctl) |
| 425 | { |
| 426 | struct ieee80211_local *local = hw_to_local(hw); |
| 427 | struct ieee80211_rate *rate; |
| 428 | int short_preamble = local->short_preamble; |
| 429 | int erp; |
| 430 | u16 dur; |
| 431 | |
| 432 | rate = frame_txctl->rts_rate; |
| 433 | erp = !!(rate->flags & IEEE80211_RATE_ERP); |
| 434 | |
| 435 | /* Data frame duration */ |
| 436 | dur = ieee80211_frame_duration(local, frame_len, rate->rate, |
| 437 | erp, short_preamble); |
| 438 | if (!(frame_txctl->flags & IEEE80211_TXCTL_NO_ACK)) { |
| 439 | /* ACK duration */ |
| 440 | dur += ieee80211_frame_duration(local, 10, rate->rate, |
| 441 | erp, short_preamble); |
| 442 | } |
| 443 | |
| 444 | return cpu_to_le16(dur); |
| 445 | } |
| 446 | EXPORT_SYMBOL(ieee80211_ctstoself_duration); |
| 447 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 448 | static int __ieee80211_if_config(struct net_device *dev, |
| 449 | struct sk_buff *beacon, |
| 450 | struct ieee80211_tx_control *control) |
| 451 | { |
| 452 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
| 453 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); |
| 454 | struct ieee80211_if_conf conf; |
| 455 | static u8 scan_bssid[] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; |
| 456 | |
| 457 | if (!local->ops->config_interface || !netif_running(dev)) |
| 458 | return 0; |
| 459 | |
| 460 | memset(&conf, 0, sizeof(conf)); |
| 461 | conf.type = sdata->type; |
| 462 | if (sdata->type == IEEE80211_IF_TYPE_STA || |
| 463 | sdata->type == IEEE80211_IF_TYPE_IBSS) { |
| 464 | if (local->sta_scanning && |
| 465 | local->scan_dev == dev) |
| 466 | conf.bssid = scan_bssid; |
| 467 | else |
| 468 | conf.bssid = sdata->u.sta.bssid; |
| 469 | conf.ssid = sdata->u.sta.ssid; |
| 470 | conf.ssid_len = sdata->u.sta.ssid_len; |
| 471 | conf.generic_elem = sdata->u.sta.extra_ie; |
| 472 | conf.generic_elem_len = sdata->u.sta.extra_ie_len; |
| 473 | } else if (sdata->type == IEEE80211_IF_TYPE_AP) { |
| 474 | conf.ssid = sdata->u.ap.ssid; |
| 475 | conf.ssid_len = sdata->u.ap.ssid_len; |
| 476 | conf.generic_elem = sdata->u.ap.generic_elem; |
| 477 | conf.generic_elem_len = sdata->u.ap.generic_elem_len; |
| 478 | conf.beacon = beacon; |
| 479 | conf.beacon_control = control; |
| 480 | } |
| 481 | return local->ops->config_interface(local_to_hw(local), |
| 482 | dev->ifindex, &conf); |
| 483 | } |
| 484 | |
| 485 | int ieee80211_if_config(struct net_device *dev) |
| 486 | { |
| 487 | return __ieee80211_if_config(dev, NULL, NULL); |
| 488 | } |
| 489 | |
| 490 | int ieee80211_if_config_beacon(struct net_device *dev) |
| 491 | { |
| 492 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); |
| 493 | struct ieee80211_tx_control control; |
| 494 | struct sk_buff *skb; |
| 495 | |
| 496 | if (!(local->hw.flags & IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE)) |
| 497 | return 0; |
| 498 | skb = ieee80211_beacon_get(local_to_hw(local), dev->ifindex, &control); |
| 499 | if (!skb) |
| 500 | return -ENOMEM; |
| 501 | return __ieee80211_if_config(dev, skb, &control); |
| 502 | } |
| 503 | |
| 504 | int ieee80211_hw_config(struct ieee80211_local *local) |
| 505 | { |
| 506 | struct ieee80211_hw_mode *mode; |
| 507 | struct ieee80211_channel *chan; |
| 508 | int ret = 0; |
| 509 | |
| 510 | if (local->sta_scanning) { |
| 511 | chan = local->scan_channel; |
| 512 | mode = local->scan_hw_mode; |
| 513 | } else { |
| 514 | chan = local->oper_channel; |
| 515 | mode = local->oper_hw_mode; |
| 516 | } |
| 517 | |
| 518 | local->hw.conf.channel = chan->chan; |
| 519 | local->hw.conf.channel_val = chan->val; |
| 520 | local->hw.conf.power_level = chan->power_level; |
| 521 | local->hw.conf.freq = chan->freq; |
| 522 | local->hw.conf.phymode = mode->mode; |
| 523 | local->hw.conf.antenna_max = chan->antenna_max; |
| 524 | local->hw.conf.chan = chan; |
| 525 | local->hw.conf.mode = mode; |
| 526 | |
| 527 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
| 528 | printk(KERN_DEBUG "HW CONFIG: channel=%d freq=%d " |
| 529 | "phymode=%d\n", local->hw.conf.channel, local->hw.conf.freq, |
| 530 | local->hw.conf.phymode); |
| 531 | #endif /* CONFIG_MAC80211_VERBOSE_DEBUG */ |
| 532 | |
| 533 | if (local->ops->config) |
| 534 | ret = local->ops->config(local_to_hw(local), &local->hw.conf); |
| 535 | |
| 536 | return ret; |
| 537 | } |
| 538 | |
| 539 | |
| 540 | static int ieee80211_change_mtu(struct net_device *dev, int new_mtu) |
| 541 | { |
| 542 | /* FIX: what would be proper limits for MTU? |
| 543 | * This interface uses 802.3 frames. */ |
| 544 | if (new_mtu < 256 || new_mtu > IEEE80211_MAX_DATA_LEN - 24 - 6) { |
| 545 | printk(KERN_WARNING "%s: invalid MTU %d\n", |
| 546 | dev->name, new_mtu); |
| 547 | return -EINVAL; |
| 548 | } |
| 549 | |
| 550 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
| 551 | printk(KERN_DEBUG "%s: setting MTU %d\n", dev->name, new_mtu); |
| 552 | #endif /* CONFIG_MAC80211_VERBOSE_DEBUG */ |
| 553 | dev->mtu = new_mtu; |
| 554 | return 0; |
| 555 | } |
| 556 | |
| 557 | |
| 558 | static int ieee80211_change_mtu_apdev(struct net_device *dev, int new_mtu) |
| 559 | { |
| 560 | /* FIX: what would be proper limits for MTU? |
| 561 | * This interface uses 802.11 frames. */ |
| 562 | if (new_mtu < 256 || new_mtu > IEEE80211_MAX_DATA_LEN) { |
| 563 | printk(KERN_WARNING "%s: invalid MTU %d\n", |
| 564 | dev->name, new_mtu); |
| 565 | return -EINVAL; |
| 566 | } |
| 567 | |
| 568 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
| 569 | printk(KERN_DEBUG "%s: setting MTU %d\n", dev->name, new_mtu); |
| 570 | #endif /* CONFIG_MAC80211_VERBOSE_DEBUG */ |
| 571 | dev->mtu = new_mtu; |
| 572 | return 0; |
| 573 | } |
| 574 | |
| 575 | enum netif_tx_lock_class { |
| 576 | TX_LOCK_NORMAL, |
| 577 | TX_LOCK_MASTER, |
| 578 | }; |
| 579 | |
| 580 | static inline void netif_tx_lock_nested(struct net_device *dev, int subclass) |
| 581 | { |
| 582 | spin_lock_nested(&dev->_xmit_lock, subclass); |
| 583 | dev->xmit_lock_owner = smp_processor_id(); |
| 584 | } |
| 585 | |
| 586 | static void ieee80211_set_multicast_list(struct net_device *dev) |
| 587 | { |
| 588 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); |
| 589 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
| 590 | unsigned short flags; |
| 591 | |
| 592 | netif_tx_lock_nested(local->mdev, TX_LOCK_MASTER); |
| 593 | if (((dev->flags & IFF_ALLMULTI) != 0) ^ (sdata->allmulti != 0)) { |
| 594 | if (sdata->allmulti) { |
| 595 | sdata->allmulti = 0; |
| 596 | local->iff_allmultis--; |
| 597 | } else { |
| 598 | sdata->allmulti = 1; |
| 599 | local->iff_allmultis++; |
| 600 | } |
| 601 | } |
| 602 | if (((dev->flags & IFF_PROMISC) != 0) ^ (sdata->promisc != 0)) { |
| 603 | if (sdata->promisc) { |
| 604 | sdata->promisc = 0; |
| 605 | local->iff_promiscs--; |
| 606 | } else { |
| 607 | sdata->promisc = 1; |
| 608 | local->iff_promiscs++; |
| 609 | } |
| 610 | } |
| 611 | if (dev->mc_count != sdata->mc_count) { |
| 612 | local->mc_count = local->mc_count - sdata->mc_count + |
| 613 | dev->mc_count; |
| 614 | sdata->mc_count = dev->mc_count; |
| 615 | } |
| 616 | if (local->ops->set_multicast_list) { |
| 617 | flags = local->mdev->flags; |
| 618 | if (local->iff_allmultis) |
| 619 | flags |= IFF_ALLMULTI; |
| 620 | if (local->iff_promiscs) |
| 621 | flags |= IFF_PROMISC; |
| 622 | read_lock(&local->sub_if_lock); |
| 623 | local->ops->set_multicast_list(local_to_hw(local), flags, |
| 624 | local->mc_count); |
| 625 | read_unlock(&local->sub_if_lock); |
| 626 | } |
| 627 | netif_tx_unlock(local->mdev); |
| 628 | } |
| 629 | |
| 630 | struct dev_mc_list *ieee80211_get_mc_list_item(struct ieee80211_hw *hw, |
| 631 | struct dev_mc_list *prev, |
| 632 | void **ptr) |
| 633 | { |
| 634 | struct ieee80211_local *local = hw_to_local(hw); |
| 635 | struct ieee80211_sub_if_data *sdata = *ptr; |
| 636 | struct dev_mc_list *mc; |
| 637 | |
| 638 | if (!prev) { |
| 639 | WARN_ON(sdata); |
| 640 | sdata = NULL; |
| 641 | } |
| 642 | if (!prev || !prev->next) { |
| 643 | if (sdata) |
| 644 | sdata = list_entry(sdata->list.next, |
| 645 | struct ieee80211_sub_if_data, list); |
| 646 | else |
| 647 | sdata = list_entry(local->sub_if_list.next, |
| 648 | struct ieee80211_sub_if_data, list); |
| 649 | if (&sdata->list != &local->sub_if_list) |
| 650 | mc = sdata->dev->mc_list; |
| 651 | else |
| 652 | mc = NULL; |
| 653 | } else |
| 654 | mc = prev->next; |
| 655 | |
| 656 | *ptr = sdata; |
| 657 | return mc; |
| 658 | } |
| 659 | EXPORT_SYMBOL(ieee80211_get_mc_list_item); |
| 660 | |
| 661 | static struct net_device_stats *ieee80211_get_stats(struct net_device *dev) |
| 662 | { |
| 663 | struct ieee80211_sub_if_data *sdata; |
| 664 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
| 665 | return &(sdata->stats); |
| 666 | } |
| 667 | |
| 668 | static void ieee80211_if_shutdown(struct net_device *dev) |
| 669 | { |
| 670 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); |
| 671 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
| 672 | |
| 673 | ASSERT_RTNL(); |
| 674 | switch (sdata->type) { |
| 675 | case IEEE80211_IF_TYPE_STA: |
| 676 | case IEEE80211_IF_TYPE_IBSS: |
| 677 | sdata->u.sta.state = IEEE80211_DISABLED; |
| 678 | del_timer_sync(&sdata->u.sta.timer); |
| 679 | skb_queue_purge(&sdata->u.sta.skb_queue); |
| 680 | if (!local->ops->hw_scan && |
| 681 | local->scan_dev == sdata->dev) { |
| 682 | local->sta_scanning = 0; |
| 683 | cancel_delayed_work(&local->scan_work); |
| 684 | } |
| 685 | flush_workqueue(local->hw.workqueue); |
| 686 | break; |
| 687 | } |
| 688 | } |
| 689 | |
| 690 | static inline int identical_mac_addr_allowed(int type1, int type2) |
| 691 | { |
| 692 | return (type1 == IEEE80211_IF_TYPE_MNTR || |
| 693 | type2 == IEEE80211_IF_TYPE_MNTR || |
| 694 | (type1 == IEEE80211_IF_TYPE_AP && |
| 695 | type2 == IEEE80211_IF_TYPE_WDS) || |
| 696 | (type1 == IEEE80211_IF_TYPE_WDS && |
| 697 | (type2 == IEEE80211_IF_TYPE_WDS || |
| 698 | type2 == IEEE80211_IF_TYPE_AP)) || |
| 699 | (type1 == IEEE80211_IF_TYPE_AP && |
| 700 | type2 == IEEE80211_IF_TYPE_VLAN) || |
| 701 | (type1 == IEEE80211_IF_TYPE_VLAN && |
| 702 | (type2 == IEEE80211_IF_TYPE_AP || |
| 703 | type2 == IEEE80211_IF_TYPE_VLAN))); |
| 704 | } |
| 705 | |
| 706 | static int ieee80211_master_open(struct net_device *dev) |
| 707 | { |
| 708 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); |
| 709 | struct ieee80211_sub_if_data *sdata; |
| 710 | int res = -EOPNOTSUPP; |
| 711 | |
| 712 | read_lock(&local->sub_if_lock); |
| 713 | list_for_each_entry(sdata, &local->sub_if_list, list) { |
| 714 | if (sdata->dev != dev && netif_running(sdata->dev)) { |
| 715 | res = 0; |
| 716 | break; |
| 717 | } |
| 718 | } |
| 719 | read_unlock(&local->sub_if_lock); |
| 720 | return res; |
| 721 | } |
| 722 | |
| 723 | static int ieee80211_master_stop(struct net_device *dev) |
| 724 | { |
| 725 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); |
| 726 | struct ieee80211_sub_if_data *sdata; |
| 727 | |
| 728 | read_lock(&local->sub_if_lock); |
| 729 | list_for_each_entry(sdata, &local->sub_if_list, list) |
| 730 | if (sdata->dev != dev && netif_running(sdata->dev)) |
| 731 | dev_close(sdata->dev); |
| 732 | read_unlock(&local->sub_if_lock); |
| 733 | |
| 734 | return 0; |
| 735 | } |
| 736 | |
| 737 | static int ieee80211_mgmt_open(struct net_device *dev) |
| 738 | { |
| 739 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); |
| 740 | |
| 741 | if (!netif_running(local->mdev)) |
| 742 | return -EOPNOTSUPP; |
| 743 | return 0; |
| 744 | } |
| 745 | |
| 746 | static int ieee80211_mgmt_stop(struct net_device *dev) |
| 747 | { |
| 748 | return 0; |
| 749 | } |
| 750 | |
| 751 | /* Check if running monitor interfaces should go to a "soft monitor" mode |
| 752 | * and switch them if necessary. */ |
| 753 | static inline void ieee80211_start_soft_monitor(struct ieee80211_local *local) |
| 754 | { |
| 755 | struct ieee80211_if_init_conf conf; |
| 756 | |
| 757 | if (local->open_count && local->open_count == local->monitors && |
| 758 | !(local->hw.flags & IEEE80211_HW_MONITOR_DURING_OPER) && |
| 759 | local->ops->remove_interface) { |
| 760 | conf.if_id = -1; |
| 761 | conf.type = IEEE80211_IF_TYPE_MNTR; |
| 762 | conf.mac_addr = NULL; |
| 763 | local->ops->remove_interface(local_to_hw(local), &conf); |
| 764 | } |
| 765 | } |
| 766 | |
| 767 | /* Check if running monitor interfaces should go to a "hard monitor" mode |
| 768 | * and switch them if necessary. */ |
| 769 | static void ieee80211_start_hard_monitor(struct ieee80211_local *local) |
| 770 | { |
| 771 | struct ieee80211_if_init_conf conf; |
| 772 | |
| 773 | if (local->open_count && local->open_count == local->monitors && |
Johannes Berg | 4480f15c | 2007-07-10 19:32:10 +0200 | [diff] [blame] | 774 | !(local->hw.flags & IEEE80211_HW_MONITOR_DURING_OPER)) { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 775 | conf.if_id = -1; |
| 776 | conf.type = IEEE80211_IF_TYPE_MNTR; |
| 777 | conf.mac_addr = NULL; |
| 778 | local->ops->add_interface(local_to_hw(local), &conf); |
| 779 | } |
| 780 | } |
| 781 | |
| 782 | static int ieee80211_open(struct net_device *dev) |
| 783 | { |
| 784 | struct ieee80211_sub_if_data *sdata, *nsdata; |
| 785 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); |
| 786 | struct ieee80211_if_init_conf conf; |
| 787 | int res; |
| 788 | |
| 789 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
| 790 | read_lock(&local->sub_if_lock); |
| 791 | list_for_each_entry(nsdata, &local->sub_if_list, list) { |
| 792 | struct net_device *ndev = nsdata->dev; |
| 793 | |
| 794 | if (ndev != dev && ndev != local->mdev && netif_running(ndev) && |
| 795 | compare_ether_addr(dev->dev_addr, ndev->dev_addr) == 0 && |
| 796 | !identical_mac_addr_allowed(sdata->type, nsdata->type)) { |
| 797 | read_unlock(&local->sub_if_lock); |
| 798 | return -ENOTUNIQ; |
| 799 | } |
| 800 | } |
| 801 | read_unlock(&local->sub_if_lock); |
| 802 | |
| 803 | if (sdata->type == IEEE80211_IF_TYPE_WDS && |
| 804 | is_zero_ether_addr(sdata->u.wds.remote_addr)) |
| 805 | return -ENOLINK; |
| 806 | |
| 807 | if (sdata->type == IEEE80211_IF_TYPE_MNTR && local->open_count && |
| 808 | !(local->hw.flags & IEEE80211_HW_MONITOR_DURING_OPER)) { |
| 809 | /* run the interface in a "soft monitor" mode */ |
| 810 | local->monitors++; |
| 811 | local->open_count++; |
| 812 | local->hw.conf.flags |= IEEE80211_CONF_RADIOTAP; |
| 813 | return 0; |
| 814 | } |
| 815 | ieee80211_start_soft_monitor(local); |
| 816 | |
Johannes Berg | 4480f15c | 2007-07-10 19:32:10 +0200 | [diff] [blame] | 817 | conf.if_id = dev->ifindex; |
| 818 | conf.type = sdata->type; |
| 819 | conf.mac_addr = dev->dev_addr; |
| 820 | res = local->ops->add_interface(local_to_hw(local), &conf); |
| 821 | if (res) { |
| 822 | if (sdata->type == IEEE80211_IF_TYPE_MNTR) |
| 823 | ieee80211_start_hard_monitor(local); |
| 824 | return res; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 825 | } |
| 826 | |
| 827 | if (local->open_count == 0) { |
| 828 | res = 0; |
| 829 | tasklet_enable(&local->tx_pending_tasklet); |
| 830 | tasklet_enable(&local->tasklet); |
| 831 | if (local->ops->open) |
| 832 | res = local->ops->open(local_to_hw(local)); |
| 833 | if (res == 0) { |
| 834 | res = dev_open(local->mdev); |
| 835 | if (res) { |
| 836 | if (local->ops->stop) |
| 837 | local->ops->stop(local_to_hw(local)); |
| 838 | } else { |
| 839 | res = ieee80211_hw_config(local); |
| 840 | if (res && local->ops->stop) |
| 841 | local->ops->stop(local_to_hw(local)); |
| 842 | else if (!res && local->apdev) |
| 843 | dev_open(local->apdev); |
| 844 | } |
| 845 | } |
| 846 | if (res) { |
| 847 | if (local->ops->remove_interface) |
| 848 | local->ops->remove_interface(local_to_hw(local), |
| 849 | &conf); |
| 850 | return res; |
| 851 | } |
| 852 | } |
| 853 | local->open_count++; |
| 854 | |
| 855 | if (sdata->type == IEEE80211_IF_TYPE_MNTR) { |
| 856 | local->monitors++; |
| 857 | local->hw.conf.flags |= IEEE80211_CONF_RADIOTAP; |
| 858 | } else |
| 859 | ieee80211_if_config(dev); |
| 860 | |
| 861 | if (sdata->type == IEEE80211_IF_TYPE_STA && |
| 862 | !local->user_space_mlme) |
| 863 | netif_carrier_off(dev); |
Michael Wu | 52fb24c | 2007-05-20 09:44:00 -0700 | [diff] [blame] | 864 | else |
| 865 | netif_carrier_on(dev); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 866 | |
| 867 | netif_start_queue(dev); |
| 868 | return 0; |
| 869 | } |
| 870 | |
| 871 | |
| 872 | static int ieee80211_stop(struct net_device *dev) |
| 873 | { |
| 874 | struct ieee80211_sub_if_data *sdata; |
| 875 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); |
| 876 | |
| 877 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
| 878 | |
| 879 | if (sdata->type == IEEE80211_IF_TYPE_MNTR && |
| 880 | local->open_count > 1 && |
| 881 | !(local->hw.flags & IEEE80211_HW_MONITOR_DURING_OPER)) { |
| 882 | /* remove "soft monitor" interface */ |
| 883 | local->open_count--; |
| 884 | local->monitors--; |
| 885 | if (!local->monitors) |
| 886 | local->hw.conf.flags &= ~IEEE80211_CONF_RADIOTAP; |
| 887 | return 0; |
| 888 | } |
| 889 | |
| 890 | netif_stop_queue(dev); |
| 891 | ieee80211_if_shutdown(dev); |
| 892 | |
| 893 | if (sdata->type == IEEE80211_IF_TYPE_MNTR) { |
| 894 | local->monitors--; |
| 895 | if (!local->monitors) |
| 896 | local->hw.conf.flags &= ~IEEE80211_CONF_RADIOTAP; |
| 897 | } |
| 898 | |
| 899 | local->open_count--; |
| 900 | if (local->open_count == 0) { |
| 901 | if (netif_running(local->mdev)) |
| 902 | dev_close(local->mdev); |
| 903 | if (local->apdev) |
| 904 | dev_close(local->apdev); |
| 905 | if (local->ops->stop) |
| 906 | local->ops->stop(local_to_hw(local)); |
| 907 | tasklet_disable(&local->tx_pending_tasklet); |
| 908 | tasklet_disable(&local->tasklet); |
| 909 | } |
| 910 | if (local->ops->remove_interface) { |
| 911 | struct ieee80211_if_init_conf conf; |
| 912 | |
| 913 | conf.if_id = dev->ifindex; |
| 914 | conf.type = sdata->type; |
| 915 | conf.mac_addr = dev->dev_addr; |
| 916 | local->ops->remove_interface(local_to_hw(local), &conf); |
| 917 | } |
| 918 | |
| 919 | ieee80211_start_hard_monitor(local); |
| 920 | |
| 921 | return 0; |
| 922 | } |
| 923 | |
| 924 | |
| 925 | static int header_parse_80211(struct sk_buff *skb, unsigned char *haddr) |
| 926 | { |
| 927 | memcpy(haddr, skb_mac_header(skb) + 10, ETH_ALEN); /* addr2 */ |
| 928 | return ETH_ALEN; |
| 929 | } |
| 930 | |
Johannes Berg | 571ecf6 | 2007-07-27 15:43:22 +0200 | [diff] [blame] | 931 | struct ieee80211_rate * |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 932 | ieee80211_get_rate(struct ieee80211_local *local, int phymode, int hw_rate) |
| 933 | { |
| 934 | struct ieee80211_hw_mode *mode; |
| 935 | int r; |
| 936 | |
| 937 | list_for_each_entry(mode, &local->modes_list, list) { |
| 938 | if (mode->mode != phymode) |
| 939 | continue; |
| 940 | for (r = 0; r < mode->num_rates; r++) { |
| 941 | struct ieee80211_rate *rate = &mode->rates[r]; |
| 942 | if (rate->val == hw_rate || |
| 943 | (rate->flags & IEEE80211_RATE_PREAMBLE2 && |
| 944 | rate->val2 == hw_rate)) |
| 945 | return rate; |
| 946 | } |
| 947 | } |
| 948 | |
| 949 | return NULL; |
| 950 | } |
| 951 | |
| 952 | static void |
| 953 | ieee80211_fill_frame_info(struct ieee80211_local *local, |
| 954 | struct ieee80211_frame_info *fi, |
| 955 | struct ieee80211_rx_status *status) |
| 956 | { |
| 957 | if (status) { |
| 958 | struct timespec ts; |
| 959 | struct ieee80211_rate *rate; |
| 960 | |
| 961 | jiffies_to_timespec(jiffies, &ts); |
| 962 | fi->hosttime = cpu_to_be64((u64) ts.tv_sec * 1000000 + |
| 963 | ts.tv_nsec / 1000); |
| 964 | fi->mactime = cpu_to_be64(status->mactime); |
| 965 | switch (status->phymode) { |
| 966 | case MODE_IEEE80211A: |
| 967 | fi->phytype = htonl(ieee80211_phytype_ofdm_dot11_a); |
| 968 | break; |
| 969 | case MODE_IEEE80211B: |
| 970 | fi->phytype = htonl(ieee80211_phytype_dsss_dot11_b); |
| 971 | break; |
| 972 | case MODE_IEEE80211G: |
| 973 | fi->phytype = htonl(ieee80211_phytype_pbcc_dot11_g); |
| 974 | break; |
| 975 | case MODE_ATHEROS_TURBO: |
| 976 | fi->phytype = |
| 977 | htonl(ieee80211_phytype_dsss_dot11_turbo); |
| 978 | break; |
| 979 | default: |
| 980 | fi->phytype = htonl(0xAAAAAAAA); |
| 981 | break; |
| 982 | } |
| 983 | fi->channel = htonl(status->channel); |
| 984 | rate = ieee80211_get_rate(local, status->phymode, |
| 985 | status->rate); |
| 986 | if (rate) { |
| 987 | fi->datarate = htonl(rate->rate); |
| 988 | if (rate->flags & IEEE80211_RATE_PREAMBLE2) { |
| 989 | if (status->rate == rate->val) |
| 990 | fi->preamble = htonl(2); /* long */ |
| 991 | else if (status->rate == rate->val2) |
| 992 | fi->preamble = htonl(1); /* short */ |
| 993 | } else |
| 994 | fi->preamble = htonl(0); |
| 995 | } else { |
| 996 | fi->datarate = htonl(0); |
| 997 | fi->preamble = htonl(0); |
| 998 | } |
| 999 | |
| 1000 | fi->antenna = htonl(status->antenna); |
| 1001 | fi->priority = htonl(0xffffffff); /* no clue */ |
| 1002 | fi->ssi_type = htonl(ieee80211_ssi_raw); |
| 1003 | fi->ssi_signal = htonl(status->ssi); |
| 1004 | fi->ssi_noise = 0x00000000; |
| 1005 | fi->encoding = 0; |
| 1006 | } else { |
| 1007 | /* clear everything because we really don't know. |
| 1008 | * the msg_type field isn't present on monitor frames |
| 1009 | * so we don't know whether it will be present or not, |
| 1010 | * but it's ok to not clear it since it'll be assigned |
| 1011 | * anyway */ |
| 1012 | memset(fi, 0, sizeof(*fi) - sizeof(fi->msg_type)); |
| 1013 | |
| 1014 | fi->ssi_type = htonl(ieee80211_ssi_none); |
| 1015 | } |
| 1016 | fi->version = htonl(IEEE80211_FI_VERSION); |
| 1017 | fi->length = cpu_to_be32(sizeof(*fi) - sizeof(fi->msg_type)); |
| 1018 | } |
| 1019 | |
| 1020 | /* this routine is actually not just for this, but also |
| 1021 | * for pushing fake 'management' frames into userspace. |
| 1022 | * it shall be replaced by a netlink-based system. */ |
| 1023 | void |
| 1024 | ieee80211_rx_mgmt(struct ieee80211_local *local, struct sk_buff *skb, |
| 1025 | struct ieee80211_rx_status *status, u32 msg_type) |
| 1026 | { |
| 1027 | struct ieee80211_frame_info *fi; |
| 1028 | const size_t hlen = sizeof(struct ieee80211_frame_info); |
| 1029 | struct ieee80211_sub_if_data *sdata; |
| 1030 | |
| 1031 | skb->dev = local->apdev; |
| 1032 | |
| 1033 | sdata = IEEE80211_DEV_TO_SUB_IF(local->apdev); |
| 1034 | |
| 1035 | if (skb_headroom(skb) < hlen) { |
| 1036 | I802_DEBUG_INC(local->rx_expand_skb_head); |
| 1037 | if (pskb_expand_head(skb, hlen, 0, GFP_ATOMIC)) { |
| 1038 | dev_kfree_skb(skb); |
| 1039 | return; |
| 1040 | } |
| 1041 | } |
| 1042 | |
| 1043 | fi = (struct ieee80211_frame_info *) skb_push(skb, hlen); |
| 1044 | |
| 1045 | ieee80211_fill_frame_info(local, fi, status); |
| 1046 | fi->msg_type = htonl(msg_type); |
| 1047 | |
| 1048 | sdata->stats.rx_packets++; |
| 1049 | sdata->stats.rx_bytes += skb->len; |
| 1050 | |
| 1051 | skb_set_mac_header(skb, 0); |
| 1052 | skb->ip_summed = CHECKSUM_UNNECESSARY; |
| 1053 | skb->pkt_type = PACKET_OTHERHOST; |
| 1054 | skb->protocol = htons(ETH_P_802_2); |
| 1055 | memset(skb->cb, 0, sizeof(skb->cb)); |
| 1056 | netif_rx(skb); |
| 1057 | } |
| 1058 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1059 | int ieee80211_radar_status(struct ieee80211_hw *hw, int channel, |
| 1060 | int radar, int radar_type) |
| 1061 | { |
| 1062 | struct sk_buff *skb; |
| 1063 | struct ieee80211_radar_info *msg; |
| 1064 | struct ieee80211_local *local = hw_to_local(hw); |
| 1065 | |
| 1066 | if (!local->apdev) |
| 1067 | return 0; |
| 1068 | |
| 1069 | skb = dev_alloc_skb(sizeof(struct ieee80211_frame_info) + |
| 1070 | sizeof(struct ieee80211_radar_info)); |
| 1071 | |
| 1072 | if (!skb) |
| 1073 | return -ENOMEM; |
| 1074 | skb_reserve(skb, sizeof(struct ieee80211_frame_info)); |
| 1075 | |
| 1076 | msg = (struct ieee80211_radar_info *) |
| 1077 | skb_put(skb, sizeof(struct ieee80211_radar_info)); |
| 1078 | msg->channel = channel; |
| 1079 | msg->radar = radar; |
| 1080 | msg->radar_type = radar_type; |
| 1081 | |
| 1082 | ieee80211_rx_mgmt(local, skb, NULL, ieee80211_msg_radar); |
| 1083 | return 0; |
| 1084 | } |
| 1085 | EXPORT_SYMBOL(ieee80211_radar_status); |
| 1086 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1087 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1088 | static void ieee80211_stat_refresh(unsigned long data) |
| 1089 | { |
| 1090 | struct ieee80211_local *local = (struct ieee80211_local *) data; |
| 1091 | struct sta_info *sta; |
| 1092 | struct ieee80211_sub_if_data *sdata; |
| 1093 | |
| 1094 | if (!local->stat_time) |
| 1095 | return; |
| 1096 | |
| 1097 | /* go through all stations */ |
| 1098 | spin_lock_bh(&local->sta_lock); |
| 1099 | list_for_each_entry(sta, &local->sta_list, list) { |
| 1100 | sta->channel_use = (sta->channel_use_raw / local->stat_time) / |
| 1101 | CHAN_UTIL_PER_10MS; |
| 1102 | sta->channel_use_raw = 0; |
| 1103 | } |
| 1104 | spin_unlock_bh(&local->sta_lock); |
| 1105 | |
| 1106 | /* go through all subinterfaces */ |
| 1107 | read_lock(&local->sub_if_lock); |
| 1108 | list_for_each_entry(sdata, &local->sub_if_list, list) { |
| 1109 | sdata->channel_use = (sdata->channel_use_raw / |
| 1110 | local->stat_time) / CHAN_UTIL_PER_10MS; |
| 1111 | sdata->channel_use_raw = 0; |
| 1112 | } |
| 1113 | read_unlock(&local->sub_if_lock); |
| 1114 | |
| 1115 | /* hardware interface */ |
| 1116 | local->channel_use = (local->channel_use_raw / |
| 1117 | local->stat_time) / CHAN_UTIL_PER_10MS; |
| 1118 | local->channel_use_raw = 0; |
| 1119 | |
| 1120 | local->stat_timer.expires = jiffies + HZ * local->stat_time / 100; |
| 1121 | add_timer(&local->stat_timer); |
| 1122 | } |
| 1123 | |
| 1124 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1125 | void ieee80211_tx_status_irqsafe(struct ieee80211_hw *hw, |
| 1126 | struct sk_buff *skb, |
| 1127 | struct ieee80211_tx_status *status) |
| 1128 | { |
| 1129 | struct ieee80211_local *local = hw_to_local(hw); |
| 1130 | struct ieee80211_tx_status *saved; |
| 1131 | int tmp; |
| 1132 | |
| 1133 | skb->dev = local->mdev; |
| 1134 | saved = kmalloc(sizeof(struct ieee80211_tx_status), GFP_ATOMIC); |
| 1135 | if (unlikely(!saved)) { |
| 1136 | if (net_ratelimit()) |
| 1137 | printk(KERN_WARNING "%s: Not enough memory, " |
| 1138 | "dropping tx status", skb->dev->name); |
| 1139 | /* should be dev_kfree_skb_irq, but due to this function being |
| 1140 | * named _irqsafe instead of just _irq we can't be sure that |
| 1141 | * people won't call it from non-irq contexts */ |
| 1142 | dev_kfree_skb_any(skb); |
| 1143 | return; |
| 1144 | } |
| 1145 | memcpy(saved, status, sizeof(struct ieee80211_tx_status)); |
| 1146 | /* copy pointer to saved status into skb->cb for use by tasklet */ |
| 1147 | memcpy(skb->cb, &saved, sizeof(saved)); |
| 1148 | |
| 1149 | skb->pkt_type = IEEE80211_TX_STATUS_MSG; |
| 1150 | skb_queue_tail(status->control.flags & IEEE80211_TXCTL_REQ_TX_STATUS ? |
| 1151 | &local->skb_queue : &local->skb_queue_unreliable, skb); |
| 1152 | tmp = skb_queue_len(&local->skb_queue) + |
| 1153 | skb_queue_len(&local->skb_queue_unreliable); |
| 1154 | while (tmp > IEEE80211_IRQSAFE_QUEUE_LIMIT && |
| 1155 | (skb = skb_dequeue(&local->skb_queue_unreliable))) { |
| 1156 | memcpy(&saved, skb->cb, sizeof(saved)); |
| 1157 | kfree(saved); |
| 1158 | dev_kfree_skb_irq(skb); |
| 1159 | tmp--; |
| 1160 | I802_DEBUG_INC(local->tx_status_drop); |
| 1161 | } |
| 1162 | tasklet_schedule(&local->tasklet); |
| 1163 | } |
| 1164 | EXPORT_SYMBOL(ieee80211_tx_status_irqsafe); |
| 1165 | |
| 1166 | static void ieee80211_tasklet_handler(unsigned long data) |
| 1167 | { |
| 1168 | struct ieee80211_local *local = (struct ieee80211_local *) data; |
| 1169 | struct sk_buff *skb; |
| 1170 | struct ieee80211_rx_status rx_status; |
| 1171 | struct ieee80211_tx_status *tx_status; |
| 1172 | |
| 1173 | while ((skb = skb_dequeue(&local->skb_queue)) || |
| 1174 | (skb = skb_dequeue(&local->skb_queue_unreliable))) { |
| 1175 | switch (skb->pkt_type) { |
| 1176 | case IEEE80211_RX_MSG: |
| 1177 | /* status is in skb->cb */ |
| 1178 | memcpy(&rx_status, skb->cb, sizeof(rx_status)); |
| 1179 | /* Clear skb->type in order to not confuse kernel |
| 1180 | * netstack. */ |
| 1181 | skb->pkt_type = 0; |
| 1182 | __ieee80211_rx(local_to_hw(local), skb, &rx_status); |
| 1183 | break; |
| 1184 | case IEEE80211_TX_STATUS_MSG: |
| 1185 | /* get pointer to saved status out of skb->cb */ |
| 1186 | memcpy(&tx_status, skb->cb, sizeof(tx_status)); |
| 1187 | skb->pkt_type = 0; |
| 1188 | ieee80211_tx_status(local_to_hw(local), |
| 1189 | skb, tx_status); |
| 1190 | kfree(tx_status); |
| 1191 | break; |
| 1192 | default: /* should never get here! */ |
| 1193 | printk(KERN_ERR "%s: Unknown message type (%d)\n", |
| 1194 | local->mdev->name, skb->pkt_type); |
| 1195 | dev_kfree_skb(skb); |
| 1196 | break; |
| 1197 | } |
| 1198 | } |
| 1199 | } |
| 1200 | |
| 1201 | |
| 1202 | /* Remove added headers (e.g., QoS control), encryption header/MIC, etc. to |
| 1203 | * make a prepared TX frame (one that has been given to hw) to look like brand |
| 1204 | * new IEEE 802.11 frame that is ready to go through TX processing again. |
| 1205 | * Also, tx_packet_data in cb is restored from tx_control. */ |
| 1206 | static void ieee80211_remove_tx_extra(struct ieee80211_local *local, |
| 1207 | struct ieee80211_key *key, |
| 1208 | struct sk_buff *skb, |
| 1209 | struct ieee80211_tx_control *control) |
| 1210 | { |
| 1211 | int hdrlen, iv_len, mic_len; |
| 1212 | struct ieee80211_tx_packet_data *pkt_data; |
| 1213 | |
| 1214 | pkt_data = (struct ieee80211_tx_packet_data *)skb->cb; |
| 1215 | pkt_data->ifindex = control->ifindex; |
| 1216 | pkt_data->mgmt_iface = (control->type == IEEE80211_IF_TYPE_MGMT); |
| 1217 | pkt_data->req_tx_status = !!(control->flags & IEEE80211_TXCTL_REQ_TX_STATUS); |
| 1218 | pkt_data->do_not_encrypt = !!(control->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT); |
| 1219 | pkt_data->requeue = !!(control->flags & IEEE80211_TXCTL_REQUEUE); |
| 1220 | pkt_data->queue = control->queue; |
| 1221 | |
| 1222 | hdrlen = ieee80211_get_hdrlen_from_skb(skb); |
| 1223 | |
| 1224 | if (!key) |
| 1225 | goto no_key; |
| 1226 | |
| 1227 | switch (key->alg) { |
| 1228 | case ALG_WEP: |
| 1229 | iv_len = WEP_IV_LEN; |
| 1230 | mic_len = WEP_ICV_LEN; |
| 1231 | break; |
| 1232 | case ALG_TKIP: |
| 1233 | iv_len = TKIP_IV_LEN; |
| 1234 | mic_len = TKIP_ICV_LEN; |
| 1235 | break; |
| 1236 | case ALG_CCMP: |
| 1237 | iv_len = CCMP_HDR_LEN; |
| 1238 | mic_len = CCMP_MIC_LEN; |
| 1239 | break; |
| 1240 | default: |
| 1241 | goto no_key; |
| 1242 | } |
| 1243 | |
| 1244 | if (skb->len >= mic_len && key->force_sw_encrypt) |
| 1245 | skb_trim(skb, skb->len - mic_len); |
| 1246 | if (skb->len >= iv_len && skb->len > hdrlen) { |
| 1247 | memmove(skb->data + iv_len, skb->data, hdrlen); |
| 1248 | skb_pull(skb, iv_len); |
| 1249 | } |
| 1250 | |
| 1251 | no_key: |
| 1252 | { |
| 1253 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; |
| 1254 | u16 fc = le16_to_cpu(hdr->frame_control); |
| 1255 | if ((fc & 0x8C) == 0x88) /* QoS Control Field */ { |
| 1256 | fc &= ~IEEE80211_STYPE_QOS_DATA; |
| 1257 | hdr->frame_control = cpu_to_le16(fc); |
| 1258 | memmove(skb->data + 2, skb->data, hdrlen - 2); |
| 1259 | skb_pull(skb, 2); |
| 1260 | } |
| 1261 | } |
| 1262 | } |
| 1263 | |
| 1264 | |
| 1265 | void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb, |
| 1266 | struct ieee80211_tx_status *status) |
| 1267 | { |
| 1268 | struct sk_buff *skb2; |
| 1269 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; |
| 1270 | struct ieee80211_local *local = hw_to_local(hw); |
| 1271 | u16 frag, type; |
| 1272 | u32 msg_type; |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 1273 | struct ieee80211_tx_status_rtap_hdr *rthdr; |
| 1274 | struct ieee80211_sub_if_data *sdata; |
| 1275 | int monitors; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1276 | |
| 1277 | if (!status) { |
| 1278 | printk(KERN_ERR |
| 1279 | "%s: ieee80211_tx_status called with NULL status\n", |
| 1280 | local->mdev->name); |
| 1281 | dev_kfree_skb(skb); |
| 1282 | return; |
| 1283 | } |
| 1284 | |
| 1285 | if (status->excessive_retries) { |
| 1286 | struct sta_info *sta; |
| 1287 | sta = sta_info_get(local, hdr->addr1); |
| 1288 | if (sta) { |
| 1289 | if (sta->flags & WLAN_STA_PS) { |
| 1290 | /* The STA is in power save mode, so assume |
| 1291 | * that this TX packet failed because of that. |
| 1292 | */ |
| 1293 | status->excessive_retries = 0; |
| 1294 | status->flags |= IEEE80211_TX_STATUS_TX_FILTERED; |
| 1295 | } |
| 1296 | sta_info_put(sta); |
| 1297 | } |
| 1298 | } |
| 1299 | |
| 1300 | if (status->flags & IEEE80211_TX_STATUS_TX_FILTERED) { |
| 1301 | struct sta_info *sta; |
| 1302 | sta = sta_info_get(local, hdr->addr1); |
| 1303 | if (sta) { |
| 1304 | sta->tx_filtered_count++; |
| 1305 | |
| 1306 | /* Clear the TX filter mask for this STA when sending |
| 1307 | * the next packet. If the STA went to power save mode, |
| 1308 | * this will happen when it is waking up for the next |
| 1309 | * time. */ |
| 1310 | sta->clear_dst_mask = 1; |
| 1311 | |
| 1312 | /* TODO: Is the WLAN_STA_PS flag always set here or is |
| 1313 | * the race between RX and TX status causing some |
| 1314 | * packets to be filtered out before 80211.o gets an |
| 1315 | * update for PS status? This seems to be the case, so |
| 1316 | * no changes are likely to be needed. */ |
| 1317 | if (sta->flags & WLAN_STA_PS && |
| 1318 | skb_queue_len(&sta->tx_filtered) < |
| 1319 | STA_MAX_TX_BUFFER) { |
| 1320 | ieee80211_remove_tx_extra(local, sta->key, |
| 1321 | skb, |
| 1322 | &status->control); |
| 1323 | skb_queue_tail(&sta->tx_filtered, skb); |
| 1324 | } else if (!(sta->flags & WLAN_STA_PS) && |
| 1325 | !(status->control.flags & IEEE80211_TXCTL_REQUEUE)) { |
| 1326 | /* Software retry the packet once */ |
| 1327 | status->control.flags |= IEEE80211_TXCTL_REQUEUE; |
| 1328 | ieee80211_remove_tx_extra(local, sta->key, |
| 1329 | skb, |
| 1330 | &status->control); |
| 1331 | dev_queue_xmit(skb); |
| 1332 | } else { |
| 1333 | if (net_ratelimit()) { |
| 1334 | printk(KERN_DEBUG "%s: dropped TX " |
| 1335 | "filtered frame queue_len=%d " |
| 1336 | "PS=%d @%lu\n", |
| 1337 | local->mdev->name, |
| 1338 | skb_queue_len( |
| 1339 | &sta->tx_filtered), |
| 1340 | !!(sta->flags & WLAN_STA_PS), |
| 1341 | jiffies); |
| 1342 | } |
| 1343 | dev_kfree_skb(skb); |
| 1344 | } |
| 1345 | sta_info_put(sta); |
| 1346 | return; |
| 1347 | } |
| 1348 | } else { |
| 1349 | /* FIXME: STUPID to call this with both local and local->mdev */ |
| 1350 | rate_control_tx_status(local, local->mdev, skb, status); |
| 1351 | } |
| 1352 | |
| 1353 | ieee80211_led_tx(local, 0); |
| 1354 | |
| 1355 | /* SNMP counters |
| 1356 | * Fragments are passed to low-level drivers as separate skbs, so these |
| 1357 | * are actually fragments, not frames. Update frame counters only for |
| 1358 | * the first fragment of the frame. */ |
| 1359 | |
| 1360 | frag = le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_FRAG; |
| 1361 | type = le16_to_cpu(hdr->frame_control) & IEEE80211_FCTL_FTYPE; |
| 1362 | |
| 1363 | if (status->flags & IEEE80211_TX_STATUS_ACK) { |
| 1364 | if (frag == 0) { |
| 1365 | local->dot11TransmittedFrameCount++; |
| 1366 | if (is_multicast_ether_addr(hdr->addr1)) |
| 1367 | local->dot11MulticastTransmittedFrameCount++; |
| 1368 | if (status->retry_count > 0) |
| 1369 | local->dot11RetryCount++; |
| 1370 | if (status->retry_count > 1) |
| 1371 | local->dot11MultipleRetryCount++; |
| 1372 | } |
| 1373 | |
| 1374 | /* This counter shall be incremented for an acknowledged MPDU |
| 1375 | * with an individual address in the address 1 field or an MPDU |
| 1376 | * with a multicast address in the address 1 field of type Data |
| 1377 | * or Management. */ |
| 1378 | if (!is_multicast_ether_addr(hdr->addr1) || |
| 1379 | type == IEEE80211_FTYPE_DATA || |
| 1380 | type == IEEE80211_FTYPE_MGMT) |
| 1381 | local->dot11TransmittedFragmentCount++; |
| 1382 | } else { |
| 1383 | if (frag == 0) |
| 1384 | local->dot11FailedCount++; |
| 1385 | } |
| 1386 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1387 | msg_type = (status->flags & IEEE80211_TX_STATUS_ACK) ? |
| 1388 | ieee80211_msg_tx_callback_ack : ieee80211_msg_tx_callback_fail; |
| 1389 | |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 1390 | /* this was a transmitted frame, but now we want to reuse it */ |
| 1391 | skb_orphan(skb); |
| 1392 | |
| 1393 | if ((status->control.flags & IEEE80211_TXCTL_REQ_TX_STATUS) && |
| 1394 | local->apdev) { |
| 1395 | if (local->monitors) { |
| 1396 | skb2 = skb_clone(skb, GFP_ATOMIC); |
| 1397 | } else { |
| 1398 | skb2 = skb; |
| 1399 | skb = NULL; |
| 1400 | } |
| 1401 | |
| 1402 | if (skb2) |
| 1403 | /* Send frame to hostapd */ |
| 1404 | ieee80211_rx_mgmt(local, skb2, NULL, msg_type); |
| 1405 | |
| 1406 | if (!skb) |
| 1407 | return; |
| 1408 | } |
| 1409 | |
| 1410 | if (!local->monitors) { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1411 | dev_kfree_skb(skb); |
| 1412 | return; |
| 1413 | } |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1414 | |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 1415 | /* send frame to monitor interfaces now */ |
| 1416 | |
| 1417 | if (skb_headroom(skb) < sizeof(*rthdr)) { |
| 1418 | printk(KERN_ERR "ieee80211_tx_status: headroom too small\n"); |
| 1419 | dev_kfree_skb(skb); |
| 1420 | return; |
| 1421 | } |
| 1422 | |
| 1423 | rthdr = (struct ieee80211_tx_status_rtap_hdr*) |
| 1424 | skb_push(skb, sizeof(*rthdr)); |
| 1425 | |
| 1426 | memset(rthdr, 0, sizeof(*rthdr)); |
| 1427 | rthdr->hdr.it_len = cpu_to_le16(sizeof(*rthdr)); |
| 1428 | rthdr->hdr.it_present = |
| 1429 | cpu_to_le32((1 << IEEE80211_RADIOTAP_TX_FLAGS) | |
| 1430 | (1 << IEEE80211_RADIOTAP_DATA_RETRIES)); |
| 1431 | |
| 1432 | if (!(status->flags & IEEE80211_TX_STATUS_ACK) && |
| 1433 | !is_multicast_ether_addr(hdr->addr1)) |
| 1434 | rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_FAIL); |
| 1435 | |
| 1436 | if ((status->control.flags & IEEE80211_TXCTL_USE_RTS_CTS) && |
| 1437 | (status->control.flags & IEEE80211_TXCTL_USE_CTS_PROTECT)) |
| 1438 | rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_CTS); |
| 1439 | else if (status->control.flags & IEEE80211_TXCTL_USE_RTS_CTS) |
| 1440 | rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_RTS); |
| 1441 | |
| 1442 | rthdr->data_retries = status->retry_count; |
| 1443 | |
| 1444 | read_lock(&local->sub_if_lock); |
| 1445 | monitors = local->monitors; |
| 1446 | list_for_each_entry(sdata, &local->sub_if_list, list) { |
| 1447 | /* |
| 1448 | * Using the monitors counter is possibly racy, but |
| 1449 | * if the value is wrong we simply either clone the skb |
| 1450 | * once too much or forget sending it to one monitor iface |
| 1451 | * The latter case isn't nice but fixing the race is much |
| 1452 | * more complicated. |
| 1453 | */ |
| 1454 | if (!monitors || !skb) |
| 1455 | goto out; |
| 1456 | |
| 1457 | if (sdata->type == IEEE80211_IF_TYPE_MNTR) { |
| 1458 | if (!netif_running(sdata->dev)) |
| 1459 | continue; |
| 1460 | monitors--; |
| 1461 | if (monitors) |
| 1462 | skb2 = skb_clone(skb, GFP_KERNEL); |
| 1463 | else |
| 1464 | skb2 = NULL; |
| 1465 | skb->dev = sdata->dev; |
| 1466 | /* XXX: is this sufficient for BPF? */ |
| 1467 | skb_set_mac_header(skb, 0); |
| 1468 | skb->ip_summed = CHECKSUM_UNNECESSARY; |
| 1469 | skb->pkt_type = PACKET_OTHERHOST; |
| 1470 | skb->protocol = htons(ETH_P_802_2); |
| 1471 | memset(skb->cb, 0, sizeof(skb->cb)); |
| 1472 | netif_rx(skb); |
| 1473 | skb = skb2; |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 1474 | } |
| 1475 | } |
| 1476 | out: |
| 1477 | read_unlock(&local->sub_if_lock); |
| 1478 | if (skb) |
| 1479 | dev_kfree_skb(skb); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1480 | } |
| 1481 | EXPORT_SYMBOL(ieee80211_tx_status); |
| 1482 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1483 | |
| 1484 | int ieee80211_if_update_wds(struct net_device *dev, u8 *remote_addr) |
| 1485 | { |
| 1486 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); |
| 1487 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
| 1488 | struct sta_info *sta; |
| 1489 | |
| 1490 | if (compare_ether_addr(remote_addr, sdata->u.wds.remote_addr) == 0) |
| 1491 | return 0; |
| 1492 | |
| 1493 | /* Create STA entry for the new peer */ |
| 1494 | sta = sta_info_add(local, dev, remote_addr, GFP_KERNEL); |
| 1495 | if (!sta) |
| 1496 | return -ENOMEM; |
| 1497 | sta_info_put(sta); |
| 1498 | |
| 1499 | /* Remove STA entry for the old peer */ |
| 1500 | sta = sta_info_get(local, sdata->u.wds.remote_addr); |
| 1501 | if (sta) { |
| 1502 | sta_info_put(sta); |
| 1503 | sta_info_free(sta, 0); |
| 1504 | } else { |
| 1505 | printk(KERN_DEBUG "%s: could not find STA entry for WDS link " |
| 1506 | "peer " MAC_FMT "\n", |
| 1507 | dev->name, MAC_ARG(sdata->u.wds.remote_addr)); |
| 1508 | } |
| 1509 | |
| 1510 | /* Update WDS link data */ |
| 1511 | memcpy(&sdata->u.wds.remote_addr, remote_addr, ETH_ALEN); |
| 1512 | |
| 1513 | return 0; |
| 1514 | } |
| 1515 | |
| 1516 | /* Must not be called for mdev and apdev */ |
| 1517 | void ieee80211_if_setup(struct net_device *dev) |
| 1518 | { |
| 1519 | ether_setup(dev); |
| 1520 | dev->hard_start_xmit = ieee80211_subif_start_xmit; |
| 1521 | dev->wireless_handlers = &ieee80211_iw_handler_def; |
| 1522 | dev->set_multicast_list = ieee80211_set_multicast_list; |
| 1523 | dev->change_mtu = ieee80211_change_mtu; |
| 1524 | dev->get_stats = ieee80211_get_stats; |
| 1525 | dev->open = ieee80211_open; |
| 1526 | dev->stop = ieee80211_stop; |
| 1527 | dev->uninit = ieee80211_if_reinit; |
| 1528 | dev->destructor = ieee80211_if_free; |
| 1529 | } |
| 1530 | |
| 1531 | void ieee80211_if_mgmt_setup(struct net_device *dev) |
| 1532 | { |
| 1533 | ether_setup(dev); |
| 1534 | dev->hard_start_xmit = ieee80211_mgmt_start_xmit; |
| 1535 | dev->change_mtu = ieee80211_change_mtu_apdev; |
| 1536 | dev->get_stats = ieee80211_get_stats; |
| 1537 | dev->open = ieee80211_mgmt_open; |
| 1538 | dev->stop = ieee80211_mgmt_stop; |
| 1539 | dev->type = ARPHRD_IEEE80211_PRISM; |
| 1540 | dev->hard_header_parse = header_parse_80211; |
| 1541 | dev->uninit = ieee80211_if_reinit; |
| 1542 | dev->destructor = ieee80211_if_free; |
| 1543 | } |
| 1544 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1545 | struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len, |
| 1546 | const struct ieee80211_ops *ops) |
| 1547 | { |
| 1548 | struct net_device *mdev; |
| 1549 | struct ieee80211_local *local; |
| 1550 | struct ieee80211_sub_if_data *sdata; |
| 1551 | int priv_size; |
| 1552 | struct wiphy *wiphy; |
| 1553 | |
| 1554 | /* Ensure 32-byte alignment of our private data and hw private data. |
| 1555 | * We use the wiphy priv data for both our ieee80211_local and for |
| 1556 | * the driver's private data |
| 1557 | * |
| 1558 | * In memory it'll be like this: |
| 1559 | * |
| 1560 | * +-------------------------+ |
| 1561 | * | struct wiphy | |
| 1562 | * +-------------------------+ |
| 1563 | * | struct ieee80211_local | |
| 1564 | * +-------------------------+ |
| 1565 | * | driver's private data | |
| 1566 | * +-------------------------+ |
| 1567 | * |
| 1568 | */ |
| 1569 | priv_size = ((sizeof(struct ieee80211_local) + |
| 1570 | NETDEV_ALIGN_CONST) & ~NETDEV_ALIGN_CONST) + |
| 1571 | priv_data_len; |
| 1572 | |
| 1573 | wiphy = wiphy_new(&mac80211_config_ops, priv_size); |
| 1574 | |
| 1575 | if (!wiphy) |
| 1576 | return NULL; |
| 1577 | |
| 1578 | wiphy->privid = mac80211_wiphy_privid; |
| 1579 | |
| 1580 | local = wiphy_priv(wiphy); |
| 1581 | local->hw.wiphy = wiphy; |
| 1582 | |
| 1583 | local->hw.priv = (char *)local + |
| 1584 | ((sizeof(struct ieee80211_local) + |
| 1585 | NETDEV_ALIGN_CONST) & ~NETDEV_ALIGN_CONST); |
| 1586 | |
Johannes Berg | 4480f15c | 2007-07-10 19:32:10 +0200 | [diff] [blame] | 1587 | BUG_ON(!ops->tx); |
| 1588 | BUG_ON(!ops->config); |
| 1589 | BUG_ON(!ops->add_interface); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1590 | local->ops = ops; |
| 1591 | |
| 1592 | /* for now, mdev needs sub_if_data :/ */ |
| 1593 | mdev = alloc_netdev(sizeof(struct ieee80211_sub_if_data), |
| 1594 | "wmaster%d", ether_setup); |
| 1595 | if (!mdev) { |
| 1596 | wiphy_free(wiphy); |
| 1597 | return NULL; |
| 1598 | } |
| 1599 | |
| 1600 | sdata = IEEE80211_DEV_TO_SUB_IF(mdev); |
| 1601 | mdev->ieee80211_ptr = &sdata->wdev; |
| 1602 | sdata->wdev.wiphy = wiphy; |
| 1603 | |
| 1604 | local->hw.queues = 1; /* default */ |
| 1605 | |
| 1606 | local->mdev = mdev; |
| 1607 | local->rx_pre_handlers = ieee80211_rx_pre_handlers; |
| 1608 | local->rx_handlers = ieee80211_rx_handlers; |
| 1609 | local->tx_handlers = ieee80211_tx_handlers; |
| 1610 | |
| 1611 | local->bridge_packets = 1; |
| 1612 | |
| 1613 | local->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD; |
| 1614 | local->fragmentation_threshold = IEEE80211_MAX_FRAG_THRESHOLD; |
| 1615 | local->short_retry_limit = 7; |
| 1616 | local->long_retry_limit = 4; |
| 1617 | local->hw.conf.radio_enabled = 1; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1618 | |
| 1619 | local->enabled_modes = (unsigned int) -1; |
| 1620 | |
| 1621 | INIT_LIST_HEAD(&local->modes_list); |
| 1622 | |
| 1623 | rwlock_init(&local->sub_if_lock); |
| 1624 | INIT_LIST_HEAD(&local->sub_if_list); |
| 1625 | |
| 1626 | INIT_DELAYED_WORK(&local->scan_work, ieee80211_sta_scan_work); |
| 1627 | init_timer(&local->stat_timer); |
| 1628 | local->stat_timer.function = ieee80211_stat_refresh; |
| 1629 | local->stat_timer.data = (unsigned long) local; |
| 1630 | ieee80211_rx_bss_list_init(mdev); |
| 1631 | |
| 1632 | sta_info_init(local); |
| 1633 | |
| 1634 | mdev->hard_start_xmit = ieee80211_master_start_xmit; |
| 1635 | mdev->open = ieee80211_master_open; |
| 1636 | mdev->stop = ieee80211_master_stop; |
| 1637 | mdev->type = ARPHRD_IEEE80211; |
| 1638 | mdev->hard_header_parse = header_parse_80211; |
| 1639 | |
| 1640 | sdata->type = IEEE80211_IF_TYPE_AP; |
| 1641 | sdata->dev = mdev; |
| 1642 | sdata->local = local; |
| 1643 | sdata->u.ap.force_unicast_rateidx = -1; |
| 1644 | sdata->u.ap.max_ratectrl_rateidx = -1; |
| 1645 | ieee80211_if_sdata_init(sdata); |
| 1646 | list_add_tail(&sdata->list, &local->sub_if_list); |
| 1647 | |
| 1648 | tasklet_init(&local->tx_pending_tasklet, ieee80211_tx_pending, |
| 1649 | (unsigned long)local); |
| 1650 | tasklet_disable(&local->tx_pending_tasklet); |
| 1651 | |
| 1652 | tasklet_init(&local->tasklet, |
| 1653 | ieee80211_tasklet_handler, |
| 1654 | (unsigned long) local); |
| 1655 | tasklet_disable(&local->tasklet); |
| 1656 | |
| 1657 | skb_queue_head_init(&local->skb_queue); |
| 1658 | skb_queue_head_init(&local->skb_queue_unreliable); |
| 1659 | |
| 1660 | return local_to_hw(local); |
| 1661 | } |
| 1662 | EXPORT_SYMBOL(ieee80211_alloc_hw); |
| 1663 | |
| 1664 | int ieee80211_register_hw(struct ieee80211_hw *hw) |
| 1665 | { |
| 1666 | struct ieee80211_local *local = hw_to_local(hw); |
| 1667 | const char *name; |
| 1668 | int result; |
| 1669 | |
| 1670 | result = wiphy_register(local->hw.wiphy); |
| 1671 | if (result < 0) |
| 1672 | return result; |
| 1673 | |
| 1674 | name = wiphy_dev(local->hw.wiphy)->driver->name; |
| 1675 | local->hw.workqueue = create_singlethread_workqueue(name); |
| 1676 | if (!local->hw.workqueue) { |
| 1677 | result = -ENOMEM; |
| 1678 | goto fail_workqueue; |
| 1679 | } |
| 1680 | |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 1681 | /* |
| 1682 | * The hardware needs headroom for sending the frame, |
| 1683 | * and we need some headroom for passing the frame to monitor |
| 1684 | * interfaces, but never both at the same time. |
| 1685 | */ |
Jiri Benc | 33ccad3 | 2007-07-18 17:10:44 +0200 | [diff] [blame] | 1686 | local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom, |
| 1687 | sizeof(struct ieee80211_tx_status_rtap_hdr)); |
Johannes Berg | b306f45 | 2007-07-10 19:32:08 +0200 | [diff] [blame] | 1688 | |
Jiri Benc | e9f207f | 2007-05-05 11:46:38 -0700 | [diff] [blame] | 1689 | debugfs_hw_add(local); |
| 1690 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1691 | local->hw.conf.beacon_int = 1000; |
| 1692 | |
| 1693 | local->wstats_flags |= local->hw.max_rssi ? |
| 1694 | IW_QUAL_LEVEL_UPDATED : IW_QUAL_LEVEL_INVALID; |
| 1695 | local->wstats_flags |= local->hw.max_signal ? |
| 1696 | IW_QUAL_QUAL_UPDATED : IW_QUAL_QUAL_INVALID; |
| 1697 | local->wstats_flags |= local->hw.max_noise ? |
| 1698 | IW_QUAL_NOISE_UPDATED : IW_QUAL_NOISE_INVALID; |
| 1699 | if (local->hw.max_rssi < 0 || local->hw.max_noise < 0) |
| 1700 | local->wstats_flags |= IW_QUAL_DBM; |
| 1701 | |
| 1702 | result = sta_info_start(local); |
| 1703 | if (result < 0) |
| 1704 | goto fail_sta_info; |
| 1705 | |
| 1706 | rtnl_lock(); |
| 1707 | result = dev_alloc_name(local->mdev, local->mdev->name); |
| 1708 | if (result < 0) |
| 1709 | goto fail_dev; |
| 1710 | |
| 1711 | memcpy(local->mdev->dev_addr, local->hw.wiphy->perm_addr, ETH_ALEN); |
| 1712 | SET_NETDEV_DEV(local->mdev, wiphy_dev(local->hw.wiphy)); |
| 1713 | |
| 1714 | result = register_netdevice(local->mdev); |
| 1715 | if (result < 0) |
| 1716 | goto fail_dev; |
| 1717 | |
Jiri Benc | e9f207f | 2007-05-05 11:46:38 -0700 | [diff] [blame] | 1718 | ieee80211_debugfs_add_netdev(IEEE80211_DEV_TO_SUB_IF(local->mdev)); |
| 1719 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1720 | result = ieee80211_init_rate_ctrl_alg(local, NULL); |
| 1721 | if (result < 0) { |
| 1722 | printk(KERN_DEBUG "%s: Failed to initialize rate control " |
| 1723 | "algorithm\n", local->mdev->name); |
| 1724 | goto fail_rate; |
| 1725 | } |
| 1726 | |
| 1727 | result = ieee80211_wep_init(local); |
| 1728 | |
| 1729 | if (result < 0) { |
| 1730 | printk(KERN_DEBUG "%s: Failed to initialize wep\n", |
| 1731 | local->mdev->name); |
| 1732 | goto fail_wep; |
| 1733 | } |
| 1734 | |
| 1735 | ieee80211_install_qdisc(local->mdev); |
| 1736 | |
| 1737 | /* add one default STA interface */ |
| 1738 | result = ieee80211_if_add(local->mdev, "wlan%d", NULL, |
| 1739 | IEEE80211_IF_TYPE_STA); |
| 1740 | if (result) |
| 1741 | printk(KERN_WARNING "%s: Failed to add default virtual iface\n", |
| 1742 | local->mdev->name); |
| 1743 | |
| 1744 | local->reg_state = IEEE80211_DEV_REGISTERED; |
| 1745 | rtnl_unlock(); |
| 1746 | |
| 1747 | ieee80211_led_init(local); |
| 1748 | |
| 1749 | return 0; |
| 1750 | |
| 1751 | fail_wep: |
| 1752 | rate_control_deinitialize(local); |
| 1753 | fail_rate: |
Jiri Benc | e9f207f | 2007-05-05 11:46:38 -0700 | [diff] [blame] | 1754 | ieee80211_debugfs_remove_netdev(IEEE80211_DEV_TO_SUB_IF(local->mdev)); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1755 | unregister_netdevice(local->mdev); |
| 1756 | fail_dev: |
| 1757 | rtnl_unlock(); |
| 1758 | sta_info_stop(local); |
| 1759 | fail_sta_info: |
Jiri Benc | e9f207f | 2007-05-05 11:46:38 -0700 | [diff] [blame] | 1760 | debugfs_hw_del(local); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1761 | destroy_workqueue(local->hw.workqueue); |
| 1762 | fail_workqueue: |
| 1763 | wiphy_unregister(local->hw.wiphy); |
| 1764 | return result; |
| 1765 | } |
| 1766 | EXPORT_SYMBOL(ieee80211_register_hw); |
| 1767 | |
| 1768 | int ieee80211_register_hwmode(struct ieee80211_hw *hw, |
| 1769 | struct ieee80211_hw_mode *mode) |
| 1770 | { |
| 1771 | struct ieee80211_local *local = hw_to_local(hw); |
| 1772 | struct ieee80211_rate *rate; |
| 1773 | int i; |
| 1774 | |
| 1775 | INIT_LIST_HEAD(&mode->list); |
| 1776 | list_add_tail(&mode->list, &local->modes_list); |
| 1777 | |
| 1778 | local->hw_modes |= (1 << mode->mode); |
| 1779 | for (i = 0; i < mode->num_rates; i++) { |
| 1780 | rate = &(mode->rates[i]); |
| 1781 | rate->rate_inv = CHAN_UTIL_RATE_LCM / rate->rate; |
| 1782 | } |
| 1783 | ieee80211_prepare_rates(local, mode); |
| 1784 | |
| 1785 | if (!local->oper_hw_mode) { |
| 1786 | /* Default to this mode */ |
| 1787 | local->hw.conf.phymode = mode->mode; |
| 1788 | local->oper_hw_mode = local->scan_hw_mode = mode; |
| 1789 | local->oper_channel = local->scan_channel = &mode->channels[0]; |
| 1790 | local->hw.conf.mode = local->oper_hw_mode; |
| 1791 | local->hw.conf.chan = local->oper_channel; |
| 1792 | } |
| 1793 | |
| 1794 | if (!(hw->flags & IEEE80211_HW_DEFAULT_REG_DOMAIN_CONFIGURED)) |
Daniel Drake | fd8bacc | 2007-06-09 19:07:14 +0100 | [diff] [blame] | 1795 | ieee80211_set_default_regdomain(mode); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1796 | |
| 1797 | return 0; |
| 1798 | } |
| 1799 | EXPORT_SYMBOL(ieee80211_register_hwmode); |
| 1800 | |
| 1801 | void ieee80211_unregister_hw(struct ieee80211_hw *hw) |
| 1802 | { |
| 1803 | struct ieee80211_local *local = hw_to_local(hw); |
| 1804 | struct ieee80211_sub_if_data *sdata, *tmp; |
| 1805 | struct list_head tmp_list; |
| 1806 | int i; |
| 1807 | |
| 1808 | tasklet_kill(&local->tx_pending_tasklet); |
| 1809 | tasklet_kill(&local->tasklet); |
| 1810 | |
| 1811 | rtnl_lock(); |
| 1812 | |
| 1813 | BUG_ON(local->reg_state != IEEE80211_DEV_REGISTERED); |
| 1814 | |
| 1815 | local->reg_state = IEEE80211_DEV_UNREGISTERED; |
| 1816 | if (local->apdev) |
| 1817 | ieee80211_if_del_mgmt(local); |
| 1818 | |
| 1819 | write_lock_bh(&local->sub_if_lock); |
| 1820 | list_replace_init(&local->sub_if_list, &tmp_list); |
| 1821 | write_unlock_bh(&local->sub_if_lock); |
| 1822 | |
| 1823 | list_for_each_entry_safe(sdata, tmp, &tmp_list, list) |
| 1824 | __ieee80211_if_del(local, sdata); |
| 1825 | |
| 1826 | rtnl_unlock(); |
| 1827 | |
| 1828 | if (local->stat_time) |
| 1829 | del_timer_sync(&local->stat_timer); |
| 1830 | |
| 1831 | ieee80211_rx_bss_list_deinit(local->mdev); |
| 1832 | ieee80211_clear_tx_pending(local); |
| 1833 | sta_info_stop(local); |
| 1834 | rate_control_deinitialize(local); |
Jiri Benc | e9f207f | 2007-05-05 11:46:38 -0700 | [diff] [blame] | 1835 | debugfs_hw_del(local); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1836 | |
| 1837 | for (i = 0; i < NUM_IEEE80211_MODES; i++) { |
| 1838 | kfree(local->supp_rates[i]); |
| 1839 | kfree(local->basic_rates[i]); |
| 1840 | } |
| 1841 | |
| 1842 | if (skb_queue_len(&local->skb_queue) |
| 1843 | || skb_queue_len(&local->skb_queue_unreliable)) |
| 1844 | printk(KERN_WARNING "%s: skb_queue not empty\n", |
| 1845 | local->mdev->name); |
| 1846 | skb_queue_purge(&local->skb_queue); |
| 1847 | skb_queue_purge(&local->skb_queue_unreliable); |
| 1848 | |
| 1849 | destroy_workqueue(local->hw.workqueue); |
| 1850 | wiphy_unregister(local->hw.wiphy); |
| 1851 | ieee80211_wep_free(local); |
| 1852 | ieee80211_led_exit(local); |
| 1853 | } |
| 1854 | EXPORT_SYMBOL(ieee80211_unregister_hw); |
| 1855 | |
| 1856 | void ieee80211_free_hw(struct ieee80211_hw *hw) |
| 1857 | { |
| 1858 | struct ieee80211_local *local = hw_to_local(hw); |
| 1859 | |
| 1860 | ieee80211_if_free(local->mdev); |
| 1861 | wiphy_free(local->hw.wiphy); |
| 1862 | } |
| 1863 | EXPORT_SYMBOL(ieee80211_free_hw); |
| 1864 | |
| 1865 | void ieee80211_wake_queue(struct ieee80211_hw *hw, int queue) |
| 1866 | { |
| 1867 | struct ieee80211_local *local = hw_to_local(hw); |
| 1868 | |
| 1869 | if (test_and_clear_bit(IEEE80211_LINK_STATE_XOFF, |
| 1870 | &local->state[queue])) { |
| 1871 | if (test_bit(IEEE80211_LINK_STATE_PENDING, |
| 1872 | &local->state[queue])) |
| 1873 | tasklet_schedule(&local->tx_pending_tasklet); |
| 1874 | else |
| 1875 | if (!ieee80211_qdisc_installed(local->mdev)) { |
| 1876 | if (queue == 0) |
| 1877 | netif_wake_queue(local->mdev); |
| 1878 | } else |
| 1879 | __netif_schedule(local->mdev); |
| 1880 | } |
| 1881 | } |
| 1882 | EXPORT_SYMBOL(ieee80211_wake_queue); |
| 1883 | |
| 1884 | void ieee80211_stop_queue(struct ieee80211_hw *hw, int queue) |
| 1885 | { |
| 1886 | struct ieee80211_local *local = hw_to_local(hw); |
| 1887 | |
| 1888 | if (!ieee80211_qdisc_installed(local->mdev) && queue == 0) |
| 1889 | netif_stop_queue(local->mdev); |
| 1890 | set_bit(IEEE80211_LINK_STATE_XOFF, &local->state[queue]); |
| 1891 | } |
| 1892 | EXPORT_SYMBOL(ieee80211_stop_queue); |
| 1893 | |
| 1894 | void ieee80211_start_queues(struct ieee80211_hw *hw) |
| 1895 | { |
| 1896 | struct ieee80211_local *local = hw_to_local(hw); |
| 1897 | int i; |
| 1898 | |
| 1899 | for (i = 0; i < local->hw.queues; i++) |
| 1900 | clear_bit(IEEE80211_LINK_STATE_XOFF, &local->state[i]); |
| 1901 | if (!ieee80211_qdisc_installed(local->mdev)) |
| 1902 | netif_start_queue(local->mdev); |
| 1903 | } |
| 1904 | EXPORT_SYMBOL(ieee80211_start_queues); |
| 1905 | |
| 1906 | void ieee80211_stop_queues(struct ieee80211_hw *hw) |
| 1907 | { |
| 1908 | int i; |
| 1909 | |
| 1910 | for (i = 0; i < hw->queues; i++) |
| 1911 | ieee80211_stop_queue(hw, i); |
| 1912 | } |
| 1913 | EXPORT_SYMBOL(ieee80211_stop_queues); |
| 1914 | |
| 1915 | void ieee80211_wake_queues(struct ieee80211_hw *hw) |
| 1916 | { |
| 1917 | int i; |
| 1918 | |
| 1919 | for (i = 0; i < hw->queues; i++) |
| 1920 | ieee80211_wake_queue(hw, i); |
| 1921 | } |
| 1922 | EXPORT_SYMBOL(ieee80211_wake_queues); |
| 1923 | |
| 1924 | struct net_device_stats *ieee80211_dev_stats(struct net_device *dev) |
| 1925 | { |
| 1926 | struct ieee80211_sub_if_data *sdata; |
| 1927 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
| 1928 | return &sdata->stats; |
| 1929 | } |
| 1930 | |
| 1931 | static int __init ieee80211_init(void) |
| 1932 | { |
| 1933 | struct sk_buff *skb; |
| 1934 | int ret; |
| 1935 | |
| 1936 | BUILD_BUG_ON(sizeof(struct ieee80211_tx_packet_data) > sizeof(skb->cb)); |
| 1937 | |
| 1938 | ret = ieee80211_wme_register(); |
| 1939 | if (ret) { |
| 1940 | printk(KERN_DEBUG "ieee80211_init: failed to " |
| 1941 | "initialize WME (err=%d)\n", ret); |
| 1942 | return ret; |
| 1943 | } |
| 1944 | |
Jiri Benc | e9f207f | 2007-05-05 11:46:38 -0700 | [diff] [blame] | 1945 | ieee80211_debugfs_netdev_init(); |
Daniel Drake | fd8bacc | 2007-06-09 19:07:14 +0100 | [diff] [blame] | 1946 | ieee80211_regdomain_init(); |
Jiri Benc | e9f207f | 2007-05-05 11:46:38 -0700 | [diff] [blame] | 1947 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1948 | return 0; |
| 1949 | } |
| 1950 | |
| 1951 | |
| 1952 | static void __exit ieee80211_exit(void) |
| 1953 | { |
| 1954 | ieee80211_wme_unregister(); |
Jiri Benc | e9f207f | 2007-05-05 11:46:38 -0700 | [diff] [blame] | 1955 | ieee80211_debugfs_netdev_exit(); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1956 | } |
| 1957 | |
| 1958 | |
Johannes Berg | ca9938f | 2007-09-11 12:50:32 +0200 | [diff] [blame] | 1959 | subsys_initcall(ieee80211_init); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1960 | module_exit(ieee80211_exit); |
| 1961 | |
| 1962 | MODULE_DESCRIPTION("IEEE 802.11 subsystem"); |
| 1963 | MODULE_LICENSE("GPL"); |