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ecdfa446 GKH |
1 | /****************************************************************************** |
2 | ||
3 | Copyright(c) 2003 - 2004 Intel Corporation. All rights reserved. | |
4 | ||
5 | This program is free software; you can redistribute it and/or modify it | |
6 | under the terms of version 2 of the GNU General Public License as | |
7 | published by the Free Software Foundation. | |
8 | ||
9 | This program is distributed in the hope that it will be useful, but WITHOUT | |
10 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
12 | more details. | |
13 | ||
14 | You should have received a copy of the GNU General Public License along with | |
15 | this program; if not, write to the Free Software Foundation, Inc., 59 | |
16 | Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
17 | ||
18 | The full GNU General Public License is included in this distribution in the | |
19 | file called LICENSE. | |
20 | ||
21 | Contact Information: | |
22 | James P. Ketrenos <ipw2100-admin@linux.intel.com> | |
23 | Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 | |
24 | ||
25 | ****************************************************************************** | |
26 | ||
27 | Few modifications for Realtek's Wi-Fi drivers by | |
559a4c31 | 28 | Andrea Merello <andrea.merello@gmail.com> |
ecdfa446 GKH |
29 | |
30 | A special thanks goes to Realtek for their support ! | |
31 | ||
32 | ******************************************************************************/ | |
33 | ||
34 | #include <linux/compiler.h> | |
ecdfa446 GKH |
35 | #include <linux/errno.h> |
36 | #include <linux/if_arp.h> | |
37 | #include <linux/in6.h> | |
38 | #include <linux/in.h> | |
39 | #include <linux/ip.h> | |
40 | #include <linux/kernel.h> | |
41 | #include <linux/module.h> | |
42 | #include <linux/netdevice.h> | |
43 | #include <linux/pci.h> | |
44 | #include <linux/proc_fs.h> | |
45 | #include <linux/skbuff.h> | |
46 | #include <linux/slab.h> | |
47 | #include <linux/tcp.h> | |
48 | #include <linux/types.h> | |
ecdfa446 GKH |
49 | #include <linux/wireless.h> |
50 | #include <linux/etherdevice.h> | |
f38d223b | 51 | #include <linux/uaccess.h> |
ecdfa446 GKH |
52 | #include <linux/if_vlan.h> |
53 | ||
94a79942 | 54 | #include "rtllib.h" |
ecdfa446 | 55 | |
ecdfa446 GKH |
56 | /* |
57 | ||
58 | ||
59 | 802.11 Data Frame | |
60 | ||
61 | ||
cd017123 | 62 | 802.11 frame_control for data frames - 2 bytes |
ecdfa446 GKH |
63 | ,-----------------------------------------------------------------------------------------. |
64 | bits | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | a | b | c | d | e | | |
65 | |----|-----|-----|-----|-----|-----|-----|-----|-----|-----|-----|-----|-----|-----|------| | |
66 | val | 0 | 0 | 0 | 1 | x | 0 | 0 | 0 | 1 | 0 | x | x | x | x | x | | |
67 | |----|-----|-----|-----|-----|-----|-----|-----|-----|-----|-----|-----|-----|-----|------| | |
68 | desc | ^-ver-^ | ^type-^ | ^-----subtype-----^ | to |from |more |retry| pwr |more |wep | | |
f38d223b | 69 | | | | x=0 data,x=1 data+ack | DS | DS |frag | | mgm |data | | |
ecdfa446 | 70 | '-----------------------------------------------------------------------------------------' |
f38d223b LF |
71 | /\ |
72 | | | |
73 | 802.11 Data Frame | | |
74 | ,--------- 'ctrl' expands to >-----------' | |
75 | | | |
ecdfa446 GKH |
76 | ,--'---,-------------------------------------------------------------. |
77 | Bytes | 2 | 2 | 6 | 6 | 6 | 2 | 0..2312 | 4 | | |
78 | |------|------|---------|---------|---------|------|---------|------| | |
79 | Desc. | ctrl | dura | DA/RA | TA | SA | Sequ | Frame | fcs | | |
f38d223b LF |
80 | | | tion | (BSSID) | | | ence | data | | |
81 | `--------------------------------------------------| |------' | |
82 | Total: 28 non-data bytes `----.----' | |
83 | | | |
ecdfa446 GKH |
84 | .- 'Frame data' expands to <---------------------------' |
85 | | | |
86 | V | |
87 | ,---------------------------------------------------. | |
88 | Bytes | 1 | 1 | 1 | 3 | 2 | 0-2304 | | |
89 | |------|------|---------|----------|------|---------| | |
90 | Desc. | SNAP | SNAP | Control |Eth Tunnel| Type | IP | | |
f38d223b LF |
91 | | DSAP | SSAP | | | | Packet | |
92 | | 0xAA | 0xAA |0x03 (UI)|0x00-00-F8| | | | |
93 | `-----------------------------------------| | | |
94 | Total: 8 non-data bytes `----.----' | |
95 | | | |
ecdfa446 GKH |
96 | .- 'IP Packet' expands, if WEP enabled, to <--' |
97 | | | |
98 | V | |
99 | ,-----------------------. | |
100 | Bytes | 4 | 0-2296 | 4 | | |
101 | |-----|-----------|-----| | |
102 | Desc. | IV | Encrypted | ICV | | |
103 | | | IP Packet | | | |
104 | `-----------------------' | |
105 | Total: 8 non-data bytes | |
106 | ||
107 | ||
108 | 802.3 Ethernet Data Frame | |
109 | ||
110 | ,-----------------------------------------. | |
111 | Bytes | 6 | 6 | 2 | Variable | 4 | | |
112 | |-------|-------|------|-----------|------| | |
113 | Desc. | Dest. | Source| Type | IP Packet | fcs | | |
f38d223b | 114 | | MAC | MAC | | | | |
ecdfa446 GKH |
115 | `-----------------------------------------' |
116 | Total: 18 non-data bytes | |
117 | ||
118 | In the event that fragmentation is required, the incoming payload is split into | |
119 | N parts of size ieee->fts. The first fragment contains the SNAP header and the | |
120 | remaining packets are just data. | |
121 | ||
122 | If encryption is enabled, each fragment payload size is reduced by enough space | |
123 | to add the prefix and postfix (IV and ICV totalling 8 bytes in the case of WEP) | |
124 | So if you have 1500 bytes of payload with ieee->fts set to 500 without | |
125 | encryption it will take 3 frames. With WEP it will take 4 frames as the | |
126 | payload of each frame is reduced to 492 bytes. | |
127 | ||
128 | * SKB visualization | |
129 | * | |
130 | * ,- skb->data | |
131 | * | | |
f38d223b LF |
132 | * | ETHERNET HEADER ,-<-- PAYLOAD |
133 | * | | 14 bytes from skb->data | |
ecdfa446 | 134 | * | 2 bytes for Type --> ,T. | (sizeof ethhdr) |
f38d223b | 135 | * | | | | |
ecdfa446 GKH |
136 | * |,-Dest.--. ,--Src.---. | | | |
137 | * | 6 bytes| | 6 bytes | | | | | |
f38d223b LF |
138 | * v | | | | | | |
139 | * 0 | v 1 | v | v 2 | |
ecdfa446 | 140 | * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 |
f38d223b LF |
141 | * ^ | ^ | ^ | |
142 | * | | | | | | | |
143 | * | | | | `T' <---- 2 bytes for Type | |
144 | * | | | | | |
ecdfa446 GKH |
145 | * | | '---SNAP--' <-------- 6 bytes for SNAP |
146 | * | | | |
147 | * `-IV--' <-------------------- 4 bytes for IV (WEP) | |
148 | * | |
149 | * SNAP HEADER | |
150 | * | |
151 | */ | |
152 | ||
153 | static u8 P802_1H_OUI[P80211_OUI_LEN] = { 0x00, 0x00, 0xf8 }; | |
154 | static u8 RFC1042_OUI[P80211_OUI_LEN] = { 0x00, 0x00, 0x00 }; | |
155 | ||
94a79942 | 156 | inline int rtllib_put_snap(u8 *data, u16 h_proto) |
ecdfa446 | 157 | { |
94a79942 | 158 | struct rtllib_snap_hdr *snap; |
ecdfa446 GKH |
159 | u8 *oui; |
160 | ||
94a79942 | 161 | snap = (struct rtllib_snap_hdr *)data; |
ecdfa446 GKH |
162 | snap->dsap = 0xaa; |
163 | snap->ssap = 0xaa; | |
164 | snap->ctrl = 0x03; | |
165 | ||
166 | if (h_proto == 0x8137 || h_proto == 0x80f3) | |
167 | oui = P802_1H_OUI; | |
168 | else | |
169 | oui = RFC1042_OUI; | |
170 | snap->oui[0] = oui[0]; | |
171 | snap->oui[1] = oui[1]; | |
172 | snap->oui[2] = oui[2]; | |
173 | ||
9326c5ca | 174 | *(__be16 *)(data + SNAP_SIZE) = htons(h_proto); |
ecdfa446 GKH |
175 | |
176 | return SNAP_SIZE + sizeof(u16); | |
177 | } | |
178 | ||
f38d223b LF |
179 | int rtllib_encrypt_fragment(struct rtllib_device *ieee, struct sk_buff *frag, |
180 | int hdr_len) | |
ecdfa446 | 181 | { |
32c44cb5 | 182 | struct lib80211_crypt_data *crypt = NULL; |
ecdfa446 GKH |
183 | int res; |
184 | ||
0ddcf5fd | 185 | crypt = ieee->crypt_info.crypt[ieee->crypt_info.tx_keyidx]; |
94a79942 | 186 | |
f38d223b | 187 | if (!(crypt && crypt->ops)) { |
d69d2054 MK |
188 | netdev_info(ieee->dev, "=========>%s(), crypt is null\n", |
189 | __func__); | |
ecdfa446 GKH |
190 | return -1; |
191 | } | |
ecdfa446 GKH |
192 | /* To encrypt, frame format is: |
193 | * IV (4 bytes), clear payload (including SNAP), ICV (4 bytes) */ | |
194 | ||
ecdfa446 GKH |
195 | /* Host-based IEEE 802.11 fragmentation for TX is not yet supported, so |
196 | * call both MSDU and MPDU encryption functions from here. */ | |
197 | atomic_inc(&crypt->refcnt); | |
198 | res = 0; | |
199 | if (crypt->ops->encrypt_msdu) | |
200 | res = crypt->ops->encrypt_msdu(frag, hdr_len, crypt->priv); | |
201 | if (res == 0 && crypt->ops->encrypt_mpdu) | |
202 | res = crypt->ops->encrypt_mpdu(frag, hdr_len, crypt->priv); | |
203 | ||
204 | atomic_dec(&crypt->refcnt); | |
205 | if (res < 0) { | |
d69d2054 MK |
206 | netdev_info(ieee->dev, "%s: Encryption failed: len=%d.\n", |
207 | ieee->dev->name, frag->len); | |
ecdfa446 GKH |
208 | ieee->ieee_stats.tx_discards++; |
209 | return -1; | |
210 | } | |
211 | ||
212 | return 0; | |
213 | } | |
214 | ||
215 | ||
f38d223b LF |
216 | void rtllib_txb_free(struct rtllib_txb *txb) |
217 | { | |
ecdfa446 GKH |
218 | if (unlikely(!txb)) |
219 | return; | |
ecdfa446 GKH |
220 | kfree(txb); |
221 | } | |
222 | ||
ec0dc6be LF |
223 | static struct rtllib_txb *rtllib_alloc_txb(int nr_frags, int txb_size, |
224 | gfp_t gfp_mask) | |
ecdfa446 | 225 | { |
94a79942 | 226 | struct rtllib_txb *txb; |
ecdfa446 | 227 | int i; |
3a6b70c3 | 228 | |
f38d223b LF |
229 | txb = kmalloc(sizeof(struct rtllib_txb) + (sizeof(u8 *) * nr_frags), |
230 | gfp_mask); | |
ecdfa446 GKH |
231 | if (!txb) |
232 | return NULL; | |
233 | ||
94a79942 | 234 | memset(txb, 0, sizeof(struct rtllib_txb)); |
ecdfa446 | 235 | txb->nr_frags = nr_frags; |
198e0d17 | 236 | txb->frag_size = cpu_to_le16(txb_size); |
ecdfa446 GKH |
237 | |
238 | for (i = 0; i < nr_frags; i++) { | |
239 | txb->fragments[i] = dev_alloc_skb(txb_size); | |
240 | if (unlikely(!txb->fragments[i])) { | |
241 | i--; | |
242 | break; | |
243 | } | |
244 | memset(txb->fragments[i]->cb, 0, sizeof(txb->fragments[i]->cb)); | |
245 | } | |
246 | if (unlikely(i != nr_frags)) { | |
247 | while (i >= 0) | |
248 | dev_kfree_skb_any(txb->fragments[i--]); | |
249 | kfree(txb); | |
250 | return NULL; | |
251 | } | |
252 | return txb; | |
253 | } | |
254 | ||
ec0dc6be | 255 | static int rtllib_classify(struct sk_buff *skb, u8 bIsAmsdu) |
ecdfa446 GKH |
256 | { |
257 | struct ethhdr *eth; | |
258 | struct iphdr *ip; | |
94a79942 | 259 | |
ecdfa446 GKH |
260 | eth = (struct ethhdr *)skb->data; |
261 | if (eth->h_proto != htons(ETH_P_IP)) | |
262 | return 0; | |
263 | ||
94a79942 | 264 | RTLLIB_DEBUG_DATA(RTLLIB_DL_DATA, skb->data, skb->len); |
ecdfa446 | 265 | ip = ip_hdr(skb); |
ecdfa446 | 266 | switch (ip->tos & 0xfc) { |
94a79942 LF |
267 | case 0x20: |
268 | return 2; | |
269 | case 0x40: | |
270 | return 1; | |
271 | case 0x60: | |
272 | return 3; | |
273 | case 0x80: | |
274 | return 4; | |
275 | case 0xa0: | |
276 | return 5; | |
277 | case 0xc0: | |
278 | return 6; | |
279 | case 0xe0: | |
280 | return 7; | |
281 | default: | |
282 | return 0; | |
ecdfa446 GKH |
283 | } |
284 | } | |
285 | ||
ec0dc6be LF |
286 | static void rtllib_tx_query_agg_cap(struct rtllib_device *ieee, |
287 | struct sk_buff *skb, | |
288 | struct cb_desc *tcb_desc) | |
ecdfa446 | 289 | { |
7796d93e | 290 | struct rt_hi_throughput *pHTInfo = ieee->pHTInfo; |
60554f2b | 291 | struct tx_ts_record *pTxTs = NULL; |
4d0c8ee8 | 292 | struct rtllib_hdr_1addr *hdr = (struct rtllib_hdr_1addr *)skb->data; |
94a79942 | 293 | |
f38d223b | 294 | if (rtllib_act_scanning(ieee, false)) |
94a79942 | 295 | return; |
ecdfa446 | 296 | |
f38d223b | 297 | if (!pHTInfo->bCurrentHTSupport || !pHTInfo->bEnableHT) |
ecdfa446 GKH |
298 | return; |
299 | if (!IsQoSDataFrame(skb->data)) | |
300 | return; | |
14fc4235 | 301 | if (is_multicast_ether_addr(hdr->addr1)) |
ecdfa446 | 302 | return; |
65a43784 | 303 | |
f38d223b | 304 | if (tcb_desc->bdhcp || ieee->CntAfterLink < 2) |
94a79942 | 305 | return; |
65a43784 | 306 | |
94a79942 LF |
307 | if (pHTInfo->IOTAction & HT_IOT_ACT_TX_NO_AGGREGATION) |
308 | return; | |
65a43784 | 309 | |
94a79942 | 310 | if (!ieee->GetNmodeSupportBySecCfg(ieee->dev)) |
ecdfa446 | 311 | return; |
f38d223b LF |
312 | if (pHTInfo->bCurrentAMPDUEnable) { |
313 | if (!GetTs(ieee, (struct ts_common_info **)(&pTxTs), hdr->addr1, | |
314 | skb->priority, TX_DIR, true)) { | |
d69d2054 | 315 | netdev_info(ieee->dev, "%s: can't get TS\n", __func__); |
ecdfa446 GKH |
316 | return; |
317 | } | |
f38d223b LF |
318 | if (pTxTs->TxAdmittedBARecord.bValid == false) { |
319 | if (ieee->wpa_ie_len && (ieee->pairwise_key_type == | |
320 | KEY_TYPE_NA)) { | |
94a79942 | 321 | ; |
f38d223b | 322 | } else if (tcb_desc->bdhcp == 1) { |
94a79942 | 323 | ; |
f38d223b | 324 | } else if (!pTxTs->bDisable_AddBa) { |
94a79942 LF |
325 | TsStartAddBaProcess(ieee, pTxTs); |
326 | } | |
ecdfa446 | 327 | goto FORCED_AGG_SETTING; |
94a79942 | 328 | } else if (pTxTs->bUsingBa == false) { |
f38d223b LF |
329 | if (SN_LESS(pTxTs->TxAdmittedBARecord.BaStartSeqCtrl.field.SeqNum, |
330 | (pTxTs->TxCurSeq+1)%4096)) | |
ecdfa446 GKH |
331 | pTxTs->bUsingBa = true; |
332 | else | |
333 | goto FORCED_AGG_SETTING; | |
334 | } | |
94a79942 | 335 | if (ieee->iw_mode == IW_MODE_INFRA) { |
ecdfa446 GKH |
336 | tcb_desc->bAMPDUEnable = true; |
337 | tcb_desc->ampdu_factor = pHTInfo->CurrentAMPDUFactor; | |
338 | tcb_desc->ampdu_density = pHTInfo->CurrentMPDUDensity; | |
339 | } | |
340 | } | |
341 | FORCED_AGG_SETTING: | |
94a79942 | 342 | switch (pHTInfo->ForcedAMPDUMode) { |
f38d223b LF |
343 | case HT_AGG_AUTO: |
344 | break; | |
345 | ||
346 | case HT_AGG_FORCE_ENABLE: | |
347 | tcb_desc->bAMPDUEnable = true; | |
348 | tcb_desc->ampdu_density = pHTInfo->ForcedMPDUDensity; | |
349 | tcb_desc->ampdu_factor = pHTInfo->ForcedAMPDUFactor; | |
350 | break; | |
351 | ||
352 | case HT_AGG_FORCE_DISABLE: | |
353 | tcb_desc->bAMPDUEnable = false; | |
354 | tcb_desc->ampdu_density = 0; | |
355 | tcb_desc->ampdu_factor = 0; | |
356 | break; | |
ecdfa446 | 357 | } |
ecdfa446 GKH |
358 | } |
359 | ||
ec0dc6be | 360 | static void rtllib_qurey_ShortPreambleMode(struct rtllib_device *ieee, |
f38d223b | 361 | struct cb_desc *tcb_desc) |
ecdfa446 GKH |
362 | { |
363 | tcb_desc->bUseShortPreamble = false; | |
364 | if (tcb_desc->data_rate == 2) | |
ecdfa446 | 365 | return; |
f38d223b LF |
366 | else if (ieee->current_network.capability & |
367 | WLAN_CAPABILITY_SHORT_PREAMBLE) | |
ecdfa446 | 368 | tcb_desc->bUseShortPreamble = true; |
ecdfa446 | 369 | } |
94a79942 | 370 | |
ec0dc6be | 371 | static void rtllib_query_HTCapShortGI(struct rtllib_device *ieee, |
f38d223b | 372 | struct cb_desc *tcb_desc) |
ecdfa446 | 373 | { |
7796d93e | 374 | struct rt_hi_throughput *pHTInfo = ieee->pHTInfo; |
ecdfa446 | 375 | |
94a79942 | 376 | tcb_desc->bUseShortGI = false; |
ecdfa446 | 377 | |
f38d223b | 378 | if (!pHTInfo->bCurrentHTSupport || !pHTInfo->bEnableHT) |
ecdfa446 GKH |
379 | return; |
380 | ||
f38d223b | 381 | if (pHTInfo->bForcedShortGI) { |
ecdfa446 GKH |
382 | tcb_desc->bUseShortGI = true; |
383 | return; | |
384 | } | |
385 | ||
f38d223b | 386 | if ((pHTInfo->bCurBW40MHz == true) && pHTInfo->bCurShortGI40MHz) |
ecdfa446 | 387 | tcb_desc->bUseShortGI = true; |
f38d223b | 388 | else if ((pHTInfo->bCurBW40MHz == false) && pHTInfo->bCurShortGI20MHz) |
ecdfa446 GKH |
389 | tcb_desc->bUseShortGI = true; |
390 | } | |
391 | ||
ec0dc6be LF |
392 | static void rtllib_query_BandwidthMode(struct rtllib_device *ieee, |
393 | struct cb_desc *tcb_desc) | |
ecdfa446 | 394 | { |
7796d93e | 395 | struct rt_hi_throughput *pHTInfo = ieee->pHTInfo; |
ecdfa446 GKH |
396 | |
397 | tcb_desc->bPacketBW = false; | |
398 | ||
f38d223b | 399 | if (!pHTInfo->bCurrentHTSupport || !pHTInfo->bEnableHT) |
ecdfa446 GKH |
400 | return; |
401 | ||
94a79942 | 402 | if (tcb_desc->bMulticast || tcb_desc->bBroadcast) |
ecdfa446 GKH |
403 | return; |
404 | ||
f38d223b | 405 | if ((tcb_desc->data_rate & 0x80) == 0) |
ecdfa446 | 406 | return; |
f38d223b LF |
407 | if (pHTInfo->bCurBW40MHz && pHTInfo->bCurTxBW40MHz && |
408 | !ieee->bandwidth_auto_switch.bforced_tx20Mhz) | |
ecdfa446 | 409 | tcb_desc->bPacketBW = true; |
ecdfa446 | 410 | } |
94a79942 | 411 | |
ec0dc6be LF |
412 | static void rtllib_query_protectionmode(struct rtllib_device *ieee, |
413 | struct cb_desc *tcb_desc, | |
414 | struct sk_buff *skb) | |
ecdfa446 | 415 | { |
ecdfa446 | 416 | tcb_desc->bRTSSTBC = false; |
94a79942 LF |
417 | tcb_desc->bRTSUseShortGI = false; |
418 | tcb_desc->bCTSEnable = false; | |
419 | tcb_desc->RTSSC = 0; | |
420 | tcb_desc->bRTSBW = false; | |
ecdfa446 | 421 | |
94a79942 | 422 | if (tcb_desc->bBroadcast || tcb_desc->bMulticast) |
ecdfa446 GKH |
423 | return; |
424 | ||
94a79942 | 425 | if (is_broadcast_ether_addr(skb->data+16)) |
ecdfa446 GKH |
426 | return; |
427 | ||
f38d223b LF |
428 | if (ieee->mode < IEEE_N_24G) { |
429 | if (skb->len > ieee->rts) { | |
ecdfa446 GKH |
430 | tcb_desc->bRTSEnable = true; |
431 | tcb_desc->rts_rate = MGN_24M; | |
f38d223b | 432 | } else if (ieee->current_network.buseprotection) { |
ecdfa446 GKH |
433 | tcb_desc->bRTSEnable = true; |
434 | tcb_desc->bCTSEnable = true; | |
435 | tcb_desc->rts_rate = MGN_24M; | |
436 | } | |
ecdfa446 | 437 | return; |
f38d223b | 438 | } else { |
7796d93e | 439 | struct rt_hi_throughput *pHTInfo = ieee->pHTInfo; |
3a6b70c3 | 440 | |
f38d223b LF |
441 | while (true) { |
442 | if (pHTInfo->IOTAction & HT_IOT_ACT_FORCED_CTS2SELF) { | |
94a79942 LF |
443 | tcb_desc->bCTSEnable = true; |
444 | tcb_desc->rts_rate = MGN_24M; | |
445 | tcb_desc->bRTSEnable = true; | |
446 | break; | |
f38d223b LF |
447 | } else if (pHTInfo->IOTAction & (HT_IOT_ACT_FORCED_RTS | |
448 | HT_IOT_ACT_PURE_N_MODE)) { | |
94a79942 LF |
449 | tcb_desc->bRTSEnable = true; |
450 | tcb_desc->rts_rate = MGN_24M; | |
451 | break; | |
452 | } | |
f38d223b | 453 | if (ieee->current_network.buseprotection) { |
ecdfa446 GKH |
454 | tcb_desc->bRTSEnable = true; |
455 | tcb_desc->bCTSEnable = true; | |
456 | tcb_desc->rts_rate = MGN_24M; | |
457 | break; | |
458 | } | |
f38d223b | 459 | if (pHTInfo->bCurrentHTSupport && pHTInfo->bEnableHT) { |
ecdfa446 | 460 | u8 HTOpMode = pHTInfo->CurrentOpMode; |
3a6b70c3 | 461 | |
f38d223b LF |
462 | if ((pHTInfo->bCurBW40MHz && (HTOpMode == 2 || |
463 | HTOpMode == 3)) || | |
464 | (!pHTInfo->bCurBW40MHz && HTOpMode == 3)) { | |
94a79942 | 465 | tcb_desc->rts_rate = MGN_24M; |
ecdfa446 GKH |
466 | tcb_desc->bRTSEnable = true; |
467 | break; | |
468 | } | |
469 | } | |
f38d223b | 470 | if (skb->len > ieee->rts) { |
94a79942 | 471 | tcb_desc->rts_rate = MGN_24M; |
ecdfa446 GKH |
472 | tcb_desc->bRTSEnable = true; |
473 | break; | |
474 | } | |
f38d223b | 475 | if (tcb_desc->bAMPDUEnable) { |
94a79942 | 476 | tcb_desc->rts_rate = MGN_24M; |
ecdfa446 GKH |
477 | tcb_desc->bRTSEnable = false; |
478 | break; | |
479 | } | |
ecdfa446 GKH |
480 | goto NO_PROTECTION; |
481 | } | |
ecdfa446 GKH |
482 | } |
483 | if (ieee->current_network.capability & WLAN_CAPABILITY_SHORT_PREAMBLE) | |
484 | tcb_desc->bUseShortPreamble = true; | |
94a79942 | 485 | if (ieee->iw_mode == IW_MODE_MASTER) |
ecdfa446 GKH |
486 | goto NO_PROTECTION; |
487 | return; | |
488 | NO_PROTECTION: | |
489 | tcb_desc->bRTSEnable = false; | |
490 | tcb_desc->bCTSEnable = false; | |
f38d223b | 491 | tcb_desc->rts_rate = 0; |
ecdfa446 | 492 | tcb_desc->RTSSC = 0; |
f38d223b | 493 | tcb_desc->bRTSBW = false; |
ecdfa446 GKH |
494 | } |
495 | ||
496 | ||
ec0dc6be LF |
497 | static void rtllib_txrate_selectmode(struct rtllib_device *ieee, |
498 | struct cb_desc *tcb_desc) | |
ecdfa446 | 499 | { |
94a79942 | 500 | if (ieee->bTxDisableRateFallBack) |
ecdfa446 GKH |
501 | tcb_desc->bTxDisableRateFallBack = true; |
502 | ||
94a79942 | 503 | if (ieee->bTxUseDriverAssingedRate) |
ecdfa446 | 504 | tcb_desc->bTxUseDriverAssingedRate = true; |
f38d223b LF |
505 | if (!tcb_desc->bTxDisableRateFallBack || |
506 | !tcb_desc->bTxUseDriverAssingedRate) { | |
507 | if (ieee->iw_mode == IW_MODE_INFRA || | |
508 | ieee->iw_mode == IW_MODE_ADHOC) | |
ecdfa446 GKH |
509 | tcb_desc->RATRIndex = 0; |
510 | } | |
511 | } | |
512 | ||
f38d223b LF |
513 | u16 rtllib_query_seqnum(struct rtllib_device *ieee, struct sk_buff *skb, |
514 | u8 *dst) | |
ecdfa446 | 515 | { |
94a79942 LF |
516 | u16 seqnum = 0; |
517 | ||
14fc4235 | 518 | if (is_multicast_ether_addr(dst)) |
94a79942 | 519 | return 0; |
f38d223b | 520 | if (IsQoSDataFrame(skb->data)) { |
60554f2b | 521 | struct tx_ts_record *pTS = NULL; |
3a6b70c3 | 522 | |
f38d223b LF |
523 | if (!GetTs(ieee, (struct ts_common_info **)(&pTS), dst, |
524 | skb->priority, TX_DIR, true)) | |
94a79942 | 525 | return 0; |
94a79942 | 526 | seqnum = pTS->TxCurSeq; |
ecdfa446 | 527 | pTS->TxCurSeq = (pTS->TxCurSeq+1)%4096; |
94a79942 LF |
528 | return seqnum; |
529 | } | |
530 | return 0; | |
531 | } | |
532 | ||
533 | static int wme_downgrade_ac(struct sk_buff *skb) | |
534 | { | |
535 | switch (skb->priority) { | |
f38d223b LF |
536 | case 6: |
537 | case 7: | |
538 | skb->priority = 5; /* VO -> VI */ | |
539 | return 0; | |
540 | case 4: | |
541 | case 5: | |
542 | skb->priority = 3; /* VI -> BE */ | |
543 | return 0; | |
544 | case 0: | |
545 | case 3: | |
546 | skb->priority = 1; /* BE -> BK */ | |
547 | return 0; | |
548 | default: | |
549 | return -1; | |
ecdfa446 GKH |
550 | } |
551 | } | |
552 | ||
94a79942 | 553 | int rtllib_xmit_inter(struct sk_buff *skb, struct net_device *dev) |
ecdfa446 | 554 | { |
f38d223b LF |
555 | struct rtllib_device *ieee = (struct rtllib_device *) |
556 | netdev_priv_rsl(dev); | |
94a79942 LF |
557 | struct rtllib_txb *txb = NULL; |
558 | struct rtllib_hdr_3addrqos *frag_hdr; | |
ecdfa446 GKH |
559 | int i, bytes_per_frag, nr_frags, bytes_last_frag, frag_size; |
560 | unsigned long flags; | |
561 | struct net_device_stats *stats = &ieee->stats; | |
562 | int ether_type = 0, encrypt; | |
563 | int bytes, fc, qos_ctl = 0, hdr_len; | |
564 | struct sk_buff *skb_frag; | |
94a79942 | 565 | struct rtllib_hdr_3addrqos header = { /* Ensure zero initialized */ |
ecdfa446 GKH |
566 | .duration_id = 0, |
567 | .seq_ctl = 0, | |
568 | .qos_ctl = 0 | |
569 | }; | |
570 | u8 dest[ETH_ALEN], src[ETH_ALEN]; | |
571 | int qos_actived = ieee->current_network.qos_data.active; | |
32c44cb5 | 572 | struct lib80211_crypt_data *crypt = NULL; |
3b83db43 | 573 | struct cb_desc *tcb_desc; |
94a79942 LF |
574 | u8 bIsMulticast = false; |
575 | u8 IsAmsdu = false; | |
f38d223b | 576 | bool bdhcp = false; |
ecdfa446 GKH |
577 | |
578 | spin_lock_irqsave(&ieee->lock, flags); | |
579 | ||
cd017123 | 580 | /* If there is no driver handler to take the TXB, don't bother |
ecdfa446 | 581 | * creating it... */ |
f38d223b LF |
582 | if ((!ieee->hard_start_xmit && !(ieee->softmac_features & |
583 | IEEE_SOFTMAC_TX_QUEUE)) || | |
584 | ((!ieee->softmac_data_hard_start_xmit && | |
585 | (ieee->softmac_features & IEEE_SOFTMAC_TX_QUEUE)))) { | |
d69d2054 | 586 | netdev_warn(ieee->dev, "No xmit handler.\n"); |
ecdfa446 GKH |
587 | goto success; |
588 | } | |
589 | ||
590 | ||
f38d223b | 591 | if (likely(ieee->raw_tx == 0)) { |
ecdfa446 | 592 | if (unlikely(skb->len < SNAP_SIZE + sizeof(u16))) { |
d69d2054 MK |
593 | netdev_warn(ieee->dev, "skb too small (%d).\n", |
594 | skb->len); | |
ecdfa446 GKH |
595 | goto success; |
596 | } | |
94a79942 LF |
597 | /* Save source and destination addresses */ |
598 | memcpy(dest, skb->data, ETH_ALEN); | |
599 | memcpy(src, skb->data+ETH_ALEN, ETH_ALEN); | |
ecdfa446 GKH |
600 | |
601 | memset(skb->cb, 0, sizeof(skb->cb)); | |
602 | ether_type = ntohs(((struct ethhdr *)skb->data)->h_proto); | |
603 | ||
f38d223b | 604 | if (ieee->iw_mode == IW_MODE_MONITOR) { |
94a79942 LF |
605 | txb = rtllib_alloc_txb(1, skb->len, GFP_ATOMIC); |
606 | if (unlikely(!txb)) { | |
d69d2054 MK |
607 | netdev_warn(ieee->dev, |
608 | "Could not allocate TXB\n"); | |
94a79942 LF |
609 | goto failed; |
610 | } | |
ecdfa446 | 611 | |
94a79942 | 612 | txb->encrypted = 0; |
198e0d17 | 613 | txb->payload_size = cpu_to_le16(skb->len); |
f38d223b LF |
614 | memcpy(skb_put(txb->fragments[0], skb->len), skb->data, |
615 | skb->len); | |
ecdfa446 | 616 | |
ecdfa446 GKH |
617 | goto success; |
618 | } | |
ecdfa446 | 619 | |
55dc4eb3 | 620 | if (skb->len > 282) { |
94a79942 | 621 | if (ETH_P_IP == ether_type) { |
f38d223b LF |
622 | const struct iphdr *ip = (struct iphdr *) |
623 | ((u8 *)skb->data+14); | |
94a79942 | 624 | if (IPPROTO_UDP == ip->protocol) { |
f38d223b LF |
625 | struct udphdr *udp; |
626 | ||
627 | udp = (struct udphdr *)((u8 *)ip + | |
628 | (ip->ihl << 2)); | |
629 | if (((((u8 *)udp)[1] == 68) && | |
630 | (((u8 *)udp)[3] == 67)) || | |
631 | ((((u8 *)udp)[1] == 67) && | |
632 | (((u8 *)udp)[3] == 68))) { | |
65a43784 | 633 | bdhcp = true; |
94a79942 | 634 | ieee->LPSDelayCnt = 200; |
65a43784 | 635 | } |
636 | } | |
f38d223b | 637 | } else if (ETH_P_ARP == ether_type) { |
d69d2054 MK |
638 | netdev_info(ieee->dev, |
639 | "=================>DHCP Protocol start tx ARP pkt!!\n"); | |
94a79942 | 640 | bdhcp = true; |
f38d223b LF |
641 | ieee->LPSDelayCnt = |
642 | ieee->current_network.tim.tim_count; | |
65a43784 | 643 | } |
94a79942 | 644 | } |
65a43784 | 645 | |
94a79942 | 646 | skb->priority = rtllib_classify(skb, IsAmsdu); |
0ddcf5fd | 647 | crypt = ieee->crypt_info.crypt[ieee->crypt_info.tx_keyidx]; |
94a79942 LF |
648 | encrypt = !(ether_type == ETH_P_PAE && ieee->ieee802_1x) && |
649 | ieee->host_encrypt && crypt && crypt->ops; | |
650 | if (!encrypt && ieee->ieee802_1x && | |
f38d223b | 651 | ieee->drop_unencrypted && ether_type != ETH_P_PAE) { |
94a79942 LF |
652 | stats->tx_dropped++; |
653 | goto success; | |
654 | } | |
94a79942 LF |
655 | if (crypt && !encrypt && ether_type == ETH_P_PAE) { |
656 | struct eapol *eap = (struct eapol *)(skb->data + | |
f38d223b LF |
657 | sizeof(struct ethhdr) - SNAP_SIZE - |
658 | sizeof(u16)); | |
94a79942 LF |
659 | RTLLIB_DEBUG_EAP("TX: IEEE 802.11 EAPOL frame: %s\n", |
660 | eap_get_type(eap->type)); | |
661 | } | |
ecdfa446 | 662 | |
94a79942 LF |
663 | /* Advance the SKB to the start of the payload */ |
664 | skb_pull(skb, sizeof(struct ethhdr)); | |
ecdfa446 | 665 | |
f38d223b | 666 | /* Determine total amount of storage required for TXB packets */ |
94a79942 | 667 | bytes = skb->len + SNAP_SIZE + sizeof(u16); |
ecdfa446 GKH |
668 | |
669 | if (encrypt) | |
94a79942 | 670 | fc = RTLLIB_FTYPE_DATA | RTLLIB_FCTL_WEP; |
ecdfa446 | 671 | else |
94a79942 | 672 | fc = RTLLIB_FTYPE_DATA; |
ecdfa446 | 673 | |
94a79942 LF |
674 | if (qos_actived) |
675 | fc |= RTLLIB_STYPE_QOS_DATA; | |
ecdfa446 | 676 | else |
94a79942 | 677 | fc |= RTLLIB_STYPE_DATA; |
ecdfa446 GKH |
678 | |
679 | if (ieee->iw_mode == IW_MODE_INFRA) { | |
94a79942 | 680 | fc |= RTLLIB_FCTL_TODS; |
ecdfa446 GKH |
681 | /* To DS: Addr1 = BSSID, Addr2 = SA, |
682 | Addr3 = DA */ | |
f38d223b LF |
683 | memcpy(&header.addr1, ieee->current_network.bssid, |
684 | ETH_ALEN); | |
ecdfa446 | 685 | memcpy(&header.addr2, &src, ETH_ALEN); |
94a79942 | 686 | if (IsAmsdu) |
f38d223b LF |
687 | memcpy(&header.addr3, |
688 | ieee->current_network.bssid, ETH_ALEN); | |
94a79942 LF |
689 | else |
690 | memcpy(&header.addr3, &dest, ETH_ALEN); | |
ecdfa446 GKH |
691 | } else if (ieee->iw_mode == IW_MODE_ADHOC) { |
692 | /* not From/To DS: Addr1 = DA, Addr2 = SA, | |
693 | Addr3 = BSSID */ | |
694 | memcpy(&header.addr1, dest, ETH_ALEN); | |
695 | memcpy(&header.addr2, src, ETH_ALEN); | |
f38d223b LF |
696 | memcpy(&header.addr3, ieee->current_network.bssid, |
697 | ETH_ALEN); | |
ecdfa446 GKH |
698 | } |
699 | ||
14fc4235 | 700 | bIsMulticast = is_multicast_ether_addr(header.addr1); |
94a79942 | 701 | |
f38d223b | 702 | header.frame_ctl = cpu_to_le16(fc); |
ecdfa446 GKH |
703 | |
704 | /* Determine fragmentation size based on destination (multicast | |
705 | * and broadcast are not fragmented) */ | |
94a79942 | 706 | if (bIsMulticast) { |
ecdfa446 GKH |
707 | frag_size = MAX_FRAG_THRESHOLD; |
708 | qos_ctl |= QOS_CTL_NOTCONTAIN_ACK; | |
94a79942 LF |
709 | } else { |
710 | frag_size = ieee->fts; | |
ecdfa446 GKH |
711 | qos_ctl = 0; |
712 | } | |
713 | ||
94a79942 LF |
714 | if (qos_actived) { |
715 | hdr_len = RTLLIB_3ADDR_LEN + 2; | |
716 | ||
f38d223b LF |
717 | /* in case we are a client verify acm is not set for this ac */ |
718 | while (unlikely(ieee->wmm_acm & (0x01 << skb->priority))) { | |
d69d2054 MK |
719 | netdev_info(ieee->dev, "skb->priority = %x\n", |
720 | skb->priority); | |
f38d223b LF |
721 | if (wme_downgrade_ac(skb)) |
722 | break; | |
d69d2054 | 723 | netdev_info(ieee->dev, "converted skb->priority = %x\n", |
f38d223b LF |
724 | skb->priority); |
725 | } | |
726 | qos_ctl |= skb->priority; | |
727 | header.qos_ctl = cpu_to_le16(qos_ctl & RTLLIB_QOS_TID); | |
ecdfa446 | 728 | } else { |
94a79942 | 729 | hdr_len = RTLLIB_3ADDR_LEN; |
ecdfa446 GKH |
730 | } |
731 | /* Determine amount of payload per fragment. Regardless of if | |
f38d223b LF |
732 | * this stack is providing the full 802.11 header, one will |
733 | * eventually be affixed to this fragment -- so we must account | |
734 | * for it when determining the amount of payload space. */ | |
ecdfa446 GKH |
735 | bytes_per_frag = frag_size - hdr_len; |
736 | if (ieee->config & | |
f38d223b | 737 | (CFG_RTLLIB_COMPUTE_FCS | CFG_RTLLIB_RESERVE_FCS)) |
94a79942 | 738 | bytes_per_frag -= RTLLIB_FCS_LEN; |
ecdfa446 | 739 | |
cd017123 | 740 | /* Each fragment may need to have room for encrypting |
f38d223b | 741 | * pre/postfix */ |
94a79942 | 742 | if (encrypt) { |
32c44cb5 SM |
743 | bytes_per_frag -= crypt->ops->extra_mpdu_prefix_len + |
744 | crypt->ops->extra_mpdu_postfix_len + | |
745 | crypt->ops->extra_msdu_prefix_len + | |
746 | crypt->ops->extra_msdu_postfix_len; | |
94a79942 | 747 | } |
ecdfa446 GKH |
748 | /* Number of fragments is the total bytes_per_frag / |
749 | * payload_per_fragment */ | |
750 | nr_frags = bytes / bytes_per_frag; | |
751 | bytes_last_frag = bytes % bytes_per_frag; | |
752 | if (bytes_last_frag) | |
753 | nr_frags++; | |
754 | else | |
755 | bytes_last_frag = bytes_per_frag; | |
756 | ||
f38d223b LF |
757 | /* When we allocate the TXB we allocate enough space for the |
758 | * reserve and full fragment bytes (bytes_per_frag doesn't | |
759 | * include prefix, postfix, header, FCS, etc.) */ | |
760 | txb = rtllib_alloc_txb(nr_frags, frag_size + | |
761 | ieee->tx_headroom, GFP_ATOMIC); | |
ecdfa446 | 762 | if (unlikely(!txb)) { |
d69d2054 | 763 | netdev_warn(ieee->dev, "Could not allocate TXB\n"); |
ecdfa446 GKH |
764 | goto failed; |
765 | } | |
766 | txb->encrypted = encrypt; | |
198e0d17 | 767 | txb->payload_size = cpu_to_le16(bytes); |
ecdfa446 | 768 | |
94a79942 | 769 | if (qos_actived) |
ecdfa446 | 770 | txb->queue_index = UP2AC(skb->priority); |
f38d223b LF |
771 | else |
772 | txb->queue_index = WME_AC_BE; | |
ecdfa446 | 773 | |
ecdfa446 GKH |
774 | for (i = 0; i < nr_frags; i++) { |
775 | skb_frag = txb->fragments[i]; | |
f38d223b LF |
776 | tcb_desc = (struct cb_desc *)(skb_frag->cb + |
777 | MAX_DEV_ADDR_SIZE); | |
778 | if (qos_actived) { | |
94a79942 | 779 | skb_frag->priority = skb->priority; |
ecdfa446 GKH |
780 | tcb_desc->queue_index = UP2AC(skb->priority); |
781 | } else { | |
94a79942 LF |
782 | skb_frag->priority = WME_AC_BE; |
783 | tcb_desc->queue_index = WME_AC_BE; | |
ecdfa446 GKH |
784 | } |
785 | skb_reserve(skb_frag, ieee->tx_headroom); | |
786 | ||
f38d223b | 787 | if (encrypt) { |
ecdfa446 GKH |
788 | if (ieee->hwsec_active) |
789 | tcb_desc->bHwSec = 1; | |
790 | else | |
791 | tcb_desc->bHwSec = 0; | |
f38d223b | 792 | skb_reserve(skb_frag, |
32c44cb5 SM |
793 | crypt->ops->extra_mpdu_prefix_len + |
794 | crypt->ops->extra_msdu_prefix_len); | |
94a79942 | 795 | } else { |
ecdfa446 GKH |
796 | tcb_desc->bHwSec = 0; |
797 | } | |
f38d223b LF |
798 | frag_hdr = (struct rtllib_hdr_3addrqos *) |
799 | skb_put(skb_frag, hdr_len); | |
ecdfa446 GKH |
800 | memcpy(frag_hdr, &header, hdr_len); |
801 | ||
f38d223b LF |
802 | /* If this is not the last fragment, then add the |
803 | * MOREFRAGS bit to the frame control */ | |
ecdfa446 GKH |
804 | if (i != nr_frags - 1) { |
805 | frag_hdr->frame_ctl = cpu_to_le16( | |
94a79942 | 806 | fc | RTLLIB_FCTL_MOREFRAGS); |
ecdfa446 GKH |
807 | bytes = bytes_per_frag; |
808 | ||
809 | } else { | |
f38d223b | 810 | /* The last fragment has the remaining length */ |
ecdfa446 GKH |
811 | bytes = bytes_last_frag; |
812 | } | |
f38d223b LF |
813 | if ((qos_actived) && (!bIsMulticast)) { |
814 | frag_hdr->seq_ctl = | |
198e0d17 RK |
815 | cpu_to_le16(rtllib_query_seqnum(ieee, skb_frag, |
816 | header.addr1)); | |
f38d223b | 817 | frag_hdr->seq_ctl = |
86005e16 | 818 | cpu_to_le16(le16_to_cpu(frag_hdr->seq_ctl)<<4 | i); |
ecdfa446 | 819 | } else { |
f38d223b LF |
820 | frag_hdr->seq_ctl = |
821 | cpu_to_le16(ieee->seq_ctrl[0]<<4 | i); | |
ecdfa446 | 822 | } |
ecdfa446 GKH |
823 | /* Put a SNAP header on the first fragment */ |
824 | if (i == 0) { | |
94a79942 | 825 | rtllib_put_snap( |
f38d223b LF |
826 | skb_put(skb_frag, SNAP_SIZE + |
827 | sizeof(u16)), ether_type); | |
ecdfa446 GKH |
828 | bytes -= SNAP_SIZE + sizeof(u16); |
829 | } | |
830 | ||
831 | memcpy(skb_put(skb_frag, bytes), skb->data, bytes); | |
832 | ||
833 | /* Advance the SKB... */ | |
834 | skb_pull(skb, bytes); | |
835 | ||
f38d223b LF |
836 | /* Encryption routine will move the header forward in |
837 | * order to insert the IV between the header and the | |
838 | * payload */ | |
ecdfa446 | 839 | if (encrypt) |
f38d223b LF |
840 | rtllib_encrypt_fragment(ieee, skb_frag, |
841 | hdr_len); | |
ecdfa446 | 842 | if (ieee->config & |
f38d223b | 843 | (CFG_RTLLIB_COMPUTE_FCS | CFG_RTLLIB_RESERVE_FCS)) |
ecdfa446 GKH |
844 | skb_put(skb_frag, 4); |
845 | } | |
846 | ||
94a79942 | 847 | if ((qos_actived) && (!bIsMulticast)) { |
f38d223b LF |
848 | if (ieee->seq_ctrl[UP2AC(skb->priority) + 1] == 0xFFF) |
849 | ieee->seq_ctrl[UP2AC(skb->priority) + 1] = 0; | |
850 | else | |
851 | ieee->seq_ctrl[UP2AC(skb->priority) + 1]++; | |
ecdfa446 | 852 | } else { |
f38d223b LF |
853 | if (ieee->seq_ctrl[0] == 0xFFF) |
854 | ieee->seq_ctrl[0] = 0; | |
855 | else | |
856 | ieee->seq_ctrl[0]++; | |
ecdfa446 | 857 | } |
f38d223b | 858 | } else { |
94a79942 | 859 | if (unlikely(skb->len < sizeof(struct rtllib_hdr_3addr))) { |
d69d2054 MK |
860 | netdev_warn(ieee->dev, "skb too small (%d).\n", |
861 | skb->len); | |
ecdfa446 GKH |
862 | goto success; |
863 | } | |
864 | ||
94a79942 | 865 | txb = rtllib_alloc_txb(1, skb->len, GFP_ATOMIC); |
f38d223b | 866 | if (!txb) { |
d69d2054 | 867 | netdev_warn(ieee->dev, "Could not allocate TXB\n"); |
ecdfa446 GKH |
868 | goto failed; |
869 | } | |
870 | ||
871 | txb->encrypted = 0; | |
198e0d17 | 872 | txb->payload_size = cpu_to_le16(skb->len); |
f38d223b LF |
873 | memcpy(skb_put(txb->fragments[0], skb->len), skb->data, |
874 | skb->len); | |
ecdfa446 GKH |
875 | } |
876 | ||
877 | success: | |
f38d223b LF |
878 | if (txb) { |
879 | struct cb_desc *tcb_desc = (struct cb_desc *) | |
880 | (txb->fragments[0]->cb + MAX_DEV_ADDR_SIZE); | |
ecdfa446 | 881 | tcb_desc->bTxEnableFwCalcDur = 1; |
94a79942 | 882 | tcb_desc->priority = skb->priority; |
65a43784 | 883 | |
94a79942 | 884 | if (ether_type == ETH_P_PAE) { |
f38d223b LF |
885 | if (ieee->pHTInfo->IOTAction & |
886 | HT_IOT_ACT_WA_IOT_Broadcom) { | |
887 | tcb_desc->data_rate = | |
888 | MgntQuery_TxRateExcludeCCKRates(ieee); | |
94a79942 | 889 | tcb_desc->bTxDisableRateFallBack = false; |
f38d223b | 890 | } else { |
94a79942 | 891 | tcb_desc->data_rate = ieee->basic_rate; |
65a43784 | 892 | tcb_desc->bTxDisableRateFallBack = 1; |
94a79942 LF |
893 | } |
894 | ||
65a43784 | 895 | |
896 | tcb_desc->RATRIndex = 7; | |
897 | tcb_desc->bTxUseDriverAssingedRate = 1; | |
94a79942 LF |
898 | } else { |
899 | if (is_multicast_ether_addr(header.addr1)) | |
900 | tcb_desc->bMulticast = 1; | |
901 | if (is_broadcast_ether_addr(header.addr1)) | |
902 | tcb_desc->bBroadcast = 1; | |
94a79942 | 903 | rtllib_txrate_selectmode(ieee, tcb_desc); |
f38d223b | 904 | if (tcb_desc->bMulticast || tcb_desc->bBroadcast) |
94a79942 LF |
905 | tcb_desc->data_rate = ieee->basic_rate; |
906 | else | |
f38d223b LF |
907 | tcb_desc->data_rate = CURRENT_RATE(ieee->mode, |
908 | ieee->rate, ieee->HTCurrentOperaRate); | |
909 | ||
4bb01423 | 910 | if (bdhcp) { |
f38d223b LF |
911 | if (ieee->pHTInfo->IOTAction & |
912 | HT_IOT_ACT_WA_IOT_Broadcom) { | |
913 | tcb_desc->data_rate = | |
914 | MgntQuery_TxRateExcludeCCKRates(ieee); | |
94a79942 | 915 | tcb_desc->bTxDisableRateFallBack = false; |
f38d223b | 916 | } else { |
94a79942 LF |
917 | tcb_desc->data_rate = MGN_1M; |
918 | tcb_desc->bTxDisableRateFallBack = 1; | |
919 | } | |
65a43784 | 920 | |
921 | ||
94a79942 LF |
922 | tcb_desc->RATRIndex = 7; |
923 | tcb_desc->bTxUseDriverAssingedRate = 1; | |
924 | tcb_desc->bdhcp = 1; | |
925 | } | |
926 | ||
927 | rtllib_qurey_ShortPreambleMode(ieee, tcb_desc); | |
f38d223b LF |
928 | rtllib_tx_query_agg_cap(ieee, txb->fragments[0], |
929 | tcb_desc); | |
94a79942 LF |
930 | rtllib_query_HTCapShortGI(ieee, tcb_desc); |
931 | rtllib_query_BandwidthMode(ieee, tcb_desc); | |
f38d223b LF |
932 | rtllib_query_protectionmode(ieee, tcb_desc, |
933 | txb->fragments[0]); | |
94a79942 | 934 | } |
ecdfa446 GKH |
935 | } |
936 | spin_unlock_irqrestore(&ieee->lock, flags); | |
937 | dev_kfree_skb_any(skb); | |
938 | if (txb) { | |
f38d223b | 939 | if (ieee->softmac_features & IEEE_SOFTMAC_TX_QUEUE) { |
94a79942 | 940 | dev->stats.tx_packets++; |
83efd529 | 941 | dev->stats.tx_bytes += le16_to_cpu(txb->payload_size); |
94a79942 | 942 | rtllib_softmac_xmit(txb, ieee); |
f38d223b | 943 | } else { |
94a79942 | 944 | if ((*ieee->hard_start_xmit)(txb, dev) == 0) { |
ecdfa446 | 945 | stats->tx_packets++; |
83efd529 | 946 | stats->tx_bytes += le16_to_cpu(txb->payload_size); |
ecdfa446 GKH |
947 | return 0; |
948 | } | |
94a79942 | 949 | rtllib_txb_free(txb); |
ecdfa446 GKH |
950 | } |
951 | } | |
952 | ||
953 | return 0; | |
954 | ||
955 | failed: | |
956 | spin_unlock_irqrestore(&ieee->lock, flags); | |
957 | netif_stop_queue(dev); | |
958 | stats->tx_errors++; | |
959 | return 1; | |
960 | ||
961 | } | |
94a79942 LF |
962 | int rtllib_xmit(struct sk_buff *skb, struct net_device *dev) |
963 | { | |
964 | memset(skb->cb, 0, sizeof(skb->cb)); | |
965 | return rtllib_xmit_inter(skb, dev); | |
966 | } | |
3b28499c | 967 | EXPORT_SYMBOL(rtllib_xmit); |