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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 | |
28 | Andrea Merello <andreamrl@tiscali.it> | |
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> | |
94a79942 | 49 | #include <linux/version.h> |
ecdfa446 GKH |
50 | #include <linux/wireless.h> |
51 | #include <linux/etherdevice.h> | |
52 | #include <asm/uaccess.h> | |
53 | #include <linux/if_vlan.h> | |
54 | ||
94a79942 | 55 | #include "rtllib.h" |
ecdfa446 | 56 | |
ecdfa446 GKH |
57 | /* |
58 | ||
59 | ||
60 | 802.11 Data Frame | |
61 | ||
62 | ||
63 | 802.11 frame_contorl for data frames - 2 bytes | |
64 | ,-----------------------------------------------------------------------------------------. | |
65 | bits | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | a | b | c | d | e | | |
66 | |----|-----|-----|-----|-----|-----|-----|-----|-----|-----|-----|-----|-----|-----|------| | |
67 | val | 0 | 0 | 0 | 1 | x | 0 | 0 | 0 | 1 | 0 | x | x | x | x | x | | |
68 | |----|-----|-----|-----|-----|-----|-----|-----|-----|-----|-----|-----|-----|-----|------| | |
69 | desc | ^-ver-^ | ^type-^ | ^-----subtype-----^ | to |from |more |retry| pwr |more |wep | | |
70 | | | | x=0 data,x=1 data+ack | DS | DS |frag | | mgm |data | | | |
71 | '-----------------------------------------------------------------------------------------' | |
72 | /\ | |
73 | | | |
74 | 802.11 Data Frame | | |
75 | ,--------- 'ctrl' expands to >-----------' | |
76 | | | |
77 | ,--'---,-------------------------------------------------------------. | |
78 | Bytes | 2 | 2 | 6 | 6 | 6 | 2 | 0..2312 | 4 | | |
79 | |------|------|---------|---------|---------|------|---------|------| | |
80 | Desc. | ctrl | dura | DA/RA | TA | SA | Sequ | Frame | fcs | | |
81 | | | tion | (BSSID) | | | ence | data | | | |
82 | `--------------------------------------------------| |------' | |
83 | Total: 28 non-data bytes `----.----' | |
84 | | | |
85 | .- 'Frame data' expands to <---------------------------' | |
86 | | | |
87 | V | |
88 | ,---------------------------------------------------. | |
89 | Bytes | 1 | 1 | 1 | 3 | 2 | 0-2304 | | |
90 | |------|------|---------|----------|------|---------| | |
91 | Desc. | SNAP | SNAP | Control |Eth Tunnel| Type | IP | | |
92 | | DSAP | SSAP | | | | Packet | | |
93 | | 0xAA | 0xAA |0x03 (UI)|0x00-00-F8| | | | |
94 | `-----------------------------------------| | | |
95 | Total: 8 non-data bytes `----.----' | |
96 | | | |
97 | .- 'IP Packet' expands, if WEP enabled, to <--' | |
98 | | | |
99 | V | |
100 | ,-----------------------. | |
101 | Bytes | 4 | 0-2296 | 4 | | |
102 | |-----|-----------|-----| | |
103 | Desc. | IV | Encrypted | ICV | | |
104 | | | IP Packet | | | |
105 | `-----------------------' | |
106 | Total: 8 non-data bytes | |
107 | ||
108 | ||
109 | 802.3 Ethernet Data Frame | |
110 | ||
111 | ,-----------------------------------------. | |
112 | Bytes | 6 | 6 | 2 | Variable | 4 | | |
113 | |-------|-------|------|-----------|------| | |
114 | Desc. | Dest. | Source| Type | IP Packet | fcs | | |
115 | | MAC | MAC | | | | | |
116 | `-----------------------------------------' | |
117 | Total: 18 non-data bytes | |
118 | ||
119 | In the event that fragmentation is required, the incoming payload is split into | |
120 | N parts of size ieee->fts. The first fragment contains the SNAP header and the | |
121 | remaining packets are just data. | |
122 | ||
123 | If encryption is enabled, each fragment payload size is reduced by enough space | |
124 | to add the prefix and postfix (IV and ICV totalling 8 bytes in the case of WEP) | |
125 | So if you have 1500 bytes of payload with ieee->fts set to 500 without | |
126 | encryption it will take 3 frames. With WEP it will take 4 frames as the | |
127 | payload of each frame is reduced to 492 bytes. | |
128 | ||
129 | * SKB visualization | |
130 | * | |
131 | * ,- skb->data | |
132 | * | | |
133 | * | ETHERNET HEADER ,-<-- PAYLOAD | |
134 | * | | 14 bytes from skb->data | |
135 | * | 2 bytes for Type --> ,T. | (sizeof ethhdr) | |
136 | * | | | | | |
137 | * |,-Dest.--. ,--Src.---. | | | | |
138 | * | 6 bytes| | 6 bytes | | | | | |
139 | * v | | | | | | | |
140 | * 0 | v 1 | v | v 2 | |
141 | * 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 | |
142 | * ^ | ^ | ^ | | |
143 | * | | | | | | | |
144 | * | | | | `T' <---- 2 bytes for Type | |
145 | * | | | | | |
146 | * | | '---SNAP--' <-------- 6 bytes for SNAP | |
147 | * | | | |
148 | * `-IV--' <-------------------- 4 bytes for IV (WEP) | |
149 | * | |
150 | * SNAP HEADER | |
151 | * | |
152 | */ | |
153 | ||
154 | static u8 P802_1H_OUI[P80211_OUI_LEN] = { 0x00, 0x00, 0xf8 }; | |
155 | static u8 RFC1042_OUI[P80211_OUI_LEN] = { 0x00, 0x00, 0x00 }; | |
156 | ||
94a79942 | 157 | inline int rtllib_put_snap(u8 *data, u16 h_proto) |
ecdfa446 | 158 | { |
94a79942 | 159 | struct rtllib_snap_hdr *snap; |
ecdfa446 GKH |
160 | u8 *oui; |
161 | ||
94a79942 | 162 | snap = (struct rtllib_snap_hdr *)data; |
ecdfa446 GKH |
163 | snap->dsap = 0xaa; |
164 | snap->ssap = 0xaa; | |
165 | snap->ctrl = 0x03; | |
166 | ||
167 | if (h_proto == 0x8137 || h_proto == 0x80f3) | |
168 | oui = P802_1H_OUI; | |
169 | else | |
170 | oui = RFC1042_OUI; | |
171 | snap->oui[0] = oui[0]; | |
172 | snap->oui[1] = oui[1]; | |
173 | snap->oui[2] = oui[2]; | |
174 | ||
175 | *(u16 *)(data + SNAP_SIZE) = htons(h_proto); | |
176 | ||
177 | return SNAP_SIZE + sizeof(u16); | |
178 | } | |
179 | ||
94a79942 LF |
180 | int rtllib_encrypt_fragment( |
181 | struct rtllib_device *ieee, | |
ecdfa446 GKH |
182 | struct sk_buff *frag, |
183 | int hdr_len) | |
184 | { | |
94a79942 | 185 | struct rtllib_crypt_data* crypt = NULL; |
ecdfa446 GKH |
186 | int res; |
187 | ||
94a79942 LF |
188 | crypt = ieee->crypt[ieee->tx_keyidx]; |
189 | ||
ecdfa446 GKH |
190 | if (!(crypt && crypt->ops)) |
191 | { | |
94a79942 | 192 | printk("=========>%s(), crypt is null\n", __func__); |
ecdfa446 GKH |
193 | return -1; |
194 | } | |
ecdfa446 GKH |
195 | /* To encrypt, frame format is: |
196 | * IV (4 bytes), clear payload (including SNAP), ICV (4 bytes) */ | |
197 | ||
ecdfa446 GKH |
198 | /* Host-based IEEE 802.11 fragmentation for TX is not yet supported, so |
199 | * call both MSDU and MPDU encryption functions from here. */ | |
200 | atomic_inc(&crypt->refcnt); | |
201 | res = 0; | |
202 | if (crypt->ops->encrypt_msdu) | |
203 | res = crypt->ops->encrypt_msdu(frag, hdr_len, crypt->priv); | |
204 | if (res == 0 && crypt->ops->encrypt_mpdu) | |
205 | res = crypt->ops->encrypt_mpdu(frag, hdr_len, crypt->priv); | |
206 | ||
207 | atomic_dec(&crypt->refcnt); | |
208 | if (res < 0) { | |
209 | printk(KERN_INFO "%s: Encryption failed: len=%d.\n", | |
210 | ieee->dev->name, frag->len); | |
211 | ieee->ieee_stats.tx_discards++; | |
212 | return -1; | |
213 | } | |
214 | ||
215 | return 0; | |
216 | } | |
217 | ||
218 | ||
94a79942 | 219 | void rtllib_txb_free(struct rtllib_txb *txb) { |
ecdfa446 GKH |
220 | if (unlikely(!txb)) |
221 | return; | |
ecdfa446 GKH |
222 | kfree(txb); |
223 | } | |
224 | ||
94a79942 | 225 | struct rtllib_txb *rtllib_alloc_txb(int nr_frags, int txb_size, |
ecdfa446 GKH |
226 | int gfp_mask) |
227 | { | |
94a79942 | 228 | struct rtllib_txb *txb; |
ecdfa446 GKH |
229 | int i; |
230 | txb = kmalloc( | |
94a79942 | 231 | sizeof(struct rtllib_txb) + (sizeof(u8*) * nr_frags), |
ecdfa446 GKH |
232 | gfp_mask); |
233 | if (!txb) | |
234 | return NULL; | |
235 | ||
94a79942 | 236 | memset(txb, 0, sizeof(struct rtllib_txb)); |
ecdfa446 GKH |
237 | txb->nr_frags = nr_frags; |
238 | txb->frag_size = txb_size; | |
239 | ||
240 | for (i = 0; i < nr_frags; i++) { | |
241 | txb->fragments[i] = dev_alloc_skb(txb_size); | |
242 | if (unlikely(!txb->fragments[i])) { | |
243 | i--; | |
244 | break; | |
245 | } | |
246 | memset(txb->fragments[i]->cb, 0, sizeof(txb->fragments[i]->cb)); | |
247 | } | |
248 | if (unlikely(i != nr_frags)) { | |
249 | while (i >= 0) | |
250 | dev_kfree_skb_any(txb->fragments[i--]); | |
251 | kfree(txb); | |
252 | return NULL; | |
253 | } | |
254 | return txb; | |
255 | } | |
256 | ||
94a79942 LF |
257 | int |
258 | rtllib_classify(struct sk_buff *skb, u8 bIsAmsdu) | |
ecdfa446 GKH |
259 | { |
260 | struct ethhdr *eth; | |
261 | struct iphdr *ip; | |
94a79942 | 262 | |
ecdfa446 GKH |
263 | eth = (struct ethhdr *)skb->data; |
264 | if (eth->h_proto != htons(ETH_P_IP)) | |
265 | return 0; | |
266 | ||
94a79942 | 267 | RTLLIB_DEBUG_DATA(RTLLIB_DL_DATA, skb->data, skb->len); |
ecdfa446 | 268 | ip = ip_hdr(skb); |
ecdfa446 | 269 | switch (ip->tos & 0xfc) { |
94a79942 LF |
270 | case 0x20: |
271 | return 2; | |
272 | case 0x40: | |
273 | return 1; | |
274 | case 0x60: | |
275 | return 3; | |
276 | case 0x80: | |
277 | return 4; | |
278 | case 0xa0: | |
279 | return 5; | |
280 | case 0xc0: | |
281 | return 6; | |
282 | case 0xe0: | |
283 | return 7; | |
284 | default: | |
285 | return 0; | |
ecdfa446 GKH |
286 | } |
287 | } | |
288 | ||
3b83db43 | 289 | void rtllib_tx_query_agg_cap(struct rtllib_device* ieee, struct sk_buff* skb, struct cb_desc * tcb_desc) |
ecdfa446 | 290 | { |
7796d93e | 291 | struct rt_hi_throughput *pHTInfo = ieee->pHTInfo; |
60554f2b | 292 | struct tx_ts_record *pTxTs = NULL; |
94a79942 LF |
293 | struct rtllib_hdr_1addr* hdr = (struct rtllib_hdr_1addr*)skb->data; |
294 | ||
295 | if (rtllib_act_scanning(ieee,false)) | |
296 | return; | |
ecdfa446 GKH |
297 | |
298 | if (!pHTInfo->bCurrentHTSupport||!pHTInfo->bEnableHT) | |
299 | return; | |
300 | if (!IsQoSDataFrame(skb->data)) | |
301 | return; | |
ecdfa446 GKH |
302 | if (is_multicast_ether_addr(hdr->addr1) || is_broadcast_ether_addr(hdr->addr1)) |
303 | return; | |
65a43784 | 304 | |
94a79942 LF |
305 | if (tcb_desc->bdhcp || ieee->CntAfterLink<2) |
306 | return; | |
65a43784 | 307 | |
94a79942 LF |
308 | if (pHTInfo->IOTAction & HT_IOT_ACT_TX_NO_AGGREGATION) |
309 | return; | |
65a43784 | 310 | |
94a79942 | 311 | if (!ieee->GetNmodeSupportBySecCfg(ieee->dev)) |
ecdfa446 | 312 | return; |
94a79942 | 313 | if (pHTInfo->bCurrentAMPDUEnable){ |
74724de1 | 314 | if (!GetTs(ieee, (struct ts_common_info **)(&pTxTs), hdr->addr1, skb->priority, TX_DIR, true)){ |
94a79942 | 315 | printk("%s: can't get TS\n", __func__); |
ecdfa446 GKH |
316 | return; |
317 | } | |
94a79942 LF |
318 | if (pTxTs->TxAdmittedBARecord.bValid == false){ |
319 | if (ieee->wpa_ie_len && (ieee->pairwise_key_type == KEY_TYPE_NA)) { | |
320 | ; | |
321 | } else if (tcb_desc->bdhcp == 1){ | |
322 | ; | |
323 | } else if (!pTxTs->bDisable_AddBa){ | |
324 | TsStartAddBaProcess(ieee, pTxTs); | |
325 | } | |
ecdfa446 | 326 | goto FORCED_AGG_SETTING; |
94a79942 | 327 | } else if (pTxTs->bUsingBa == false) { |
ecdfa446 GKH |
328 | if (SN_LESS(pTxTs->TxAdmittedBARecord.BaStartSeqCtrl.field.SeqNum, (pTxTs->TxCurSeq+1)%4096)) |
329 | pTxTs->bUsingBa = true; | |
330 | else | |
331 | goto FORCED_AGG_SETTING; | |
332 | } | |
94a79942 | 333 | if (ieee->iw_mode == IW_MODE_INFRA) { |
ecdfa446 GKH |
334 | tcb_desc->bAMPDUEnable = true; |
335 | tcb_desc->ampdu_factor = pHTInfo->CurrentAMPDUFactor; | |
336 | tcb_desc->ampdu_density = pHTInfo->CurrentMPDUDensity; | |
337 | } | |
338 | } | |
339 | FORCED_AGG_SETTING: | |
94a79942 | 340 | switch (pHTInfo->ForcedAMPDUMode) { |
ecdfa446 GKH |
341 | case HT_AGG_AUTO: |
342 | break; | |
343 | ||
344 | case HT_AGG_FORCE_ENABLE: | |
345 | tcb_desc->bAMPDUEnable = true; | |
346 | tcb_desc->ampdu_density = pHTInfo->ForcedMPDUDensity; | |
347 | tcb_desc->ampdu_factor = pHTInfo->ForcedAMPDUFactor; | |
348 | break; | |
349 | ||
350 | case HT_AGG_FORCE_DISABLE: | |
351 | tcb_desc->bAMPDUEnable = false; | |
352 | tcb_desc->ampdu_density = 0; | |
353 | tcb_desc->ampdu_factor = 0; | |
354 | break; | |
355 | ||
356 | } | |
357 | return; | |
358 | } | |
359 | ||
3b83db43 | 360 | extern void rtllib_qurey_ShortPreambleMode(struct rtllib_device* ieee, struct cb_desc * tcb_desc) |
ecdfa446 GKH |
361 | { |
362 | tcb_desc->bUseShortPreamble = false; | |
363 | if (tcb_desc->data_rate == 2) | |
94a79942 | 364 | { |
ecdfa446 GKH |
365 | return; |
366 | } | |
367 | else if (ieee->current_network.capability & WLAN_CAPABILITY_SHORT_PREAMBLE) | |
368 | { | |
369 | tcb_desc->bUseShortPreamble = true; | |
370 | } | |
371 | return; | |
372 | } | |
94a79942 | 373 | |
ecdfa446 | 374 | extern void |
3b83db43 | 375 | rtllib_query_HTCapShortGI(struct rtllib_device *ieee, struct cb_desc *tcb_desc) |
ecdfa446 | 376 | { |
7796d93e | 377 | struct rt_hi_throughput *pHTInfo = ieee->pHTInfo; |
ecdfa446 | 378 | |
94a79942 | 379 | tcb_desc->bUseShortGI = false; |
ecdfa446 | 380 | |
94a79942 | 381 | if (!pHTInfo->bCurrentHTSupport||!pHTInfo->bEnableHT) |
ecdfa446 GKH |
382 | return; |
383 | ||
94a79942 | 384 | if (pHTInfo->bForcedShortGI) |
ecdfa446 GKH |
385 | { |
386 | tcb_desc->bUseShortGI = true; | |
387 | return; | |
388 | } | |
389 | ||
94a79942 | 390 | if ((pHTInfo->bCurBW40MHz==true) && pHTInfo->bCurShortGI40MHz) |
ecdfa446 | 391 | tcb_desc->bUseShortGI = true; |
94a79942 | 392 | else if ((pHTInfo->bCurBW40MHz==false) && pHTInfo->bCurShortGI20MHz) |
ecdfa446 GKH |
393 | tcb_desc->bUseShortGI = true; |
394 | } | |
395 | ||
3b83db43 | 396 | void rtllib_query_BandwidthMode(struct rtllib_device* ieee, struct cb_desc *tcb_desc) |
ecdfa446 | 397 | { |
7796d93e | 398 | struct rt_hi_throughput *pHTInfo = ieee->pHTInfo; |
ecdfa446 GKH |
399 | |
400 | tcb_desc->bPacketBW = false; | |
401 | ||
94a79942 | 402 | if (!pHTInfo->bCurrentHTSupport||!pHTInfo->bEnableHT) |
ecdfa446 GKH |
403 | return; |
404 | ||
94a79942 | 405 | if (tcb_desc->bMulticast || tcb_desc->bBroadcast) |
ecdfa446 GKH |
406 | return; |
407 | ||
94a79942 | 408 | if ((tcb_desc->data_rate & 0x80)==0) |
ecdfa446 | 409 | return; |
94a79942 | 410 | if (pHTInfo->bCurBW40MHz && pHTInfo->bCurTxBW40MHz && !ieee->bandwidth_auto_switch.bforced_tx20Mhz) |
ecdfa446 GKH |
411 | tcb_desc->bPacketBW = true; |
412 | return; | |
413 | } | |
94a79942 | 414 | |
3b83db43 | 415 | void rtllib_query_protectionmode(struct rtllib_device* ieee, struct cb_desc * tcb_desc, struct sk_buff* skb) |
ecdfa446 | 416 | { |
ecdfa446 | 417 | tcb_desc->bRTSSTBC = false; |
94a79942 LF |
418 | tcb_desc->bRTSUseShortGI = false; |
419 | tcb_desc->bCTSEnable = false; | |
420 | tcb_desc->RTSSC = 0; | |
421 | tcb_desc->bRTSBW = false; | |
ecdfa446 | 422 | |
94a79942 | 423 | if (tcb_desc->bBroadcast || tcb_desc->bMulticast) |
ecdfa446 GKH |
424 | return; |
425 | ||
94a79942 | 426 | if (is_broadcast_ether_addr(skb->data+16)) |
ecdfa446 GKH |
427 | return; |
428 | ||
94a79942 | 429 | if (ieee->mode < IEEE_N_24G) |
ecdfa446 | 430 | { |
ecdfa446 GKH |
431 | if (skb->len > ieee->rts) |
432 | { | |
433 | tcb_desc->bRTSEnable = true; | |
434 | tcb_desc->rts_rate = MGN_24M; | |
435 | } | |
436 | else if (ieee->current_network.buseprotection) | |
437 | { | |
ecdfa446 GKH |
438 | tcb_desc->bRTSEnable = true; |
439 | tcb_desc->bCTSEnable = true; | |
440 | tcb_desc->rts_rate = MGN_24M; | |
441 | } | |
ecdfa446 GKH |
442 | return; |
443 | } | |
444 | else | |
94a79942 | 445 | { |
7796d93e | 446 | struct rt_hi_throughput *pHTInfo = ieee->pHTInfo; |
ecdfa446 GKH |
447 | while (true) |
448 | { | |
94a79942 LF |
449 | if (pHTInfo->IOTAction & HT_IOT_ACT_FORCED_CTS2SELF) |
450 | { | |
451 | tcb_desc->bCTSEnable = true; | |
452 | tcb_desc->rts_rate = MGN_24M; | |
453 | tcb_desc->bRTSEnable = true; | |
454 | break; | |
455 | } | |
456 | else if (pHTInfo->IOTAction & (HT_IOT_ACT_FORCED_RTS|HT_IOT_ACT_PURE_N_MODE)) | |
457 | { | |
458 | tcb_desc->bRTSEnable = true; | |
459 | tcb_desc->rts_rate = MGN_24M; | |
460 | break; | |
461 | } | |
ecdfa446 | 462 | if (ieee->current_network.buseprotection) |
94a79942 | 463 | { |
ecdfa446 GKH |
464 | tcb_desc->bRTSEnable = true; |
465 | tcb_desc->bCTSEnable = true; | |
466 | tcb_desc->rts_rate = MGN_24M; | |
467 | break; | |
468 | } | |
94a79942 | 469 | if (pHTInfo->bCurrentHTSupport && pHTInfo->bEnableHT) |
ecdfa446 GKH |
470 | { |
471 | u8 HTOpMode = pHTInfo->CurrentOpMode; | |
94a79942 | 472 | if ((pHTInfo->bCurBW40MHz && (HTOpMode == 2 || HTOpMode == 3)) || |
ecdfa446 GKH |
473 | (!pHTInfo->bCurBW40MHz && HTOpMode == 3) ) |
474 | { | |
94a79942 | 475 | tcb_desc->rts_rate = MGN_24M; |
ecdfa446 GKH |
476 | tcb_desc->bRTSEnable = true; |
477 | break; | |
478 | } | |
479 | } | |
ecdfa446 GKH |
480 | if (skb->len > ieee->rts) |
481 | { | |
94a79942 | 482 | tcb_desc->rts_rate = MGN_24M; |
ecdfa446 GKH |
483 | tcb_desc->bRTSEnable = true; |
484 | break; | |
485 | } | |
94a79942 | 486 | if (tcb_desc->bAMPDUEnable) |
ecdfa446 | 487 | { |
94a79942 | 488 | tcb_desc->rts_rate = MGN_24M; |
ecdfa446 GKH |
489 | tcb_desc->bRTSEnable = false; |
490 | break; | |
491 | } | |
ecdfa446 GKH |
492 | goto NO_PROTECTION; |
493 | } | |
494 | } | |
94a79942 | 495 | if ( 0 ) |
ecdfa446 GKH |
496 | { |
497 | tcb_desc->bCTSEnable = true; | |
498 | tcb_desc->rts_rate = MGN_24M; | |
94a79942 | 499 | tcb_desc->bRTSEnable = true; |
ecdfa446 GKH |
500 | } |
501 | if (ieee->current_network.capability & WLAN_CAPABILITY_SHORT_PREAMBLE) | |
502 | tcb_desc->bUseShortPreamble = true; | |
94a79942 | 503 | if (ieee->iw_mode == IW_MODE_MASTER) |
ecdfa446 GKH |
504 | goto NO_PROTECTION; |
505 | return; | |
506 | NO_PROTECTION: | |
507 | tcb_desc->bRTSEnable = false; | |
508 | tcb_desc->bCTSEnable = false; | |
509 | tcb_desc->rts_rate = 0; | |
510 | tcb_desc->RTSSC = 0; | |
511 | tcb_desc->bRTSBW = false; | |
512 | } | |
513 | ||
514 | ||
3b83db43 | 515 | void rtllib_txrate_selectmode(struct rtllib_device* ieee, struct cb_desc * tcb_desc) |
ecdfa446 | 516 | { |
94a79942 | 517 | if (ieee->bTxDisableRateFallBack) |
ecdfa446 GKH |
518 | tcb_desc->bTxDisableRateFallBack = true; |
519 | ||
94a79942 | 520 | if (ieee->bTxUseDriverAssingedRate) |
ecdfa446 | 521 | tcb_desc->bTxUseDriverAssingedRate = true; |
94a79942 | 522 | if (!tcb_desc->bTxDisableRateFallBack || !tcb_desc->bTxUseDriverAssingedRate) |
ecdfa446 GKH |
523 | { |
524 | if (ieee->iw_mode == IW_MODE_INFRA || ieee->iw_mode == IW_MODE_ADHOC) | |
525 | tcb_desc->RATRIndex = 0; | |
526 | } | |
527 | } | |
528 | ||
94a79942 | 529 | u16 rtllib_query_seqnum(struct rtllib_device*ieee, struct sk_buff* skb, u8* dst) |
ecdfa446 | 530 | { |
94a79942 LF |
531 | u16 seqnum = 0; |
532 | ||
ecdfa446 | 533 | if (is_multicast_ether_addr(dst) || is_broadcast_ether_addr(dst)) |
94a79942 LF |
534 | return 0; |
535 | if (IsQoSDataFrame(skb->data)) | |
ecdfa446 | 536 | { |
60554f2b | 537 | struct tx_ts_record *pTS = NULL; |
74724de1 | 538 | if (!GetTs(ieee, (struct ts_common_info **)(&pTS), dst, skb->priority, TX_DIR, true)) |
ecdfa446 | 539 | { |
94a79942 | 540 | return 0; |
ecdfa446 | 541 | } |
94a79942 | 542 | seqnum = pTS->TxCurSeq; |
ecdfa446 | 543 | pTS->TxCurSeq = (pTS->TxCurSeq+1)%4096; |
94a79942 LF |
544 | return seqnum; |
545 | } | |
546 | return 0; | |
547 | } | |
548 | ||
549 | static int wme_downgrade_ac(struct sk_buff *skb) | |
550 | { | |
551 | switch (skb->priority) { | |
552 | case 6: | |
553 | case 7: | |
554 | skb->priority = 5; /* VO -> VI */ | |
555 | return 0; | |
556 | case 4: | |
557 | case 5: | |
558 | skb->priority = 3; /* VI -> BE */ | |
559 | return 0; | |
560 | case 0: | |
561 | case 3: | |
562 | skb->priority = 1; /* BE -> BK */ | |
563 | return 0; | |
564 | default: | |
565 | return -1; | |
ecdfa446 GKH |
566 | } |
567 | } | |
568 | ||
94a79942 | 569 | int rtllib_xmit_inter(struct sk_buff *skb, struct net_device *dev) |
ecdfa446 | 570 | { |
94a79942 LF |
571 | struct rtllib_device *ieee = (struct rtllib_device *)netdev_priv_rsl(dev); |
572 | struct rtllib_txb *txb = NULL; | |
573 | struct rtllib_hdr_3addrqos *frag_hdr; | |
ecdfa446 GKH |
574 | int i, bytes_per_frag, nr_frags, bytes_last_frag, frag_size; |
575 | unsigned long flags; | |
576 | struct net_device_stats *stats = &ieee->stats; | |
577 | int ether_type = 0, encrypt; | |
578 | int bytes, fc, qos_ctl = 0, hdr_len; | |
579 | struct sk_buff *skb_frag; | |
94a79942 | 580 | struct rtllib_hdr_3addrqos header = { /* Ensure zero initialized */ |
ecdfa446 GKH |
581 | .duration_id = 0, |
582 | .seq_ctl = 0, | |
583 | .qos_ctl = 0 | |
584 | }; | |
585 | u8 dest[ETH_ALEN], src[ETH_ALEN]; | |
586 | int qos_actived = ieee->current_network.qos_data.active; | |
94a79942 | 587 | struct rtllib_crypt_data* crypt = NULL; |
3b83db43 | 588 | struct cb_desc *tcb_desc; |
94a79942 LF |
589 | u8 bIsMulticast = false; |
590 | u8 IsAmsdu = false; | |
ecdfa446 | 591 | |
94a79942 | 592 | bool bdhcp =false; |
ecdfa446 GKH |
593 | spin_lock_irqsave(&ieee->lock, flags); |
594 | ||
595 | /* If there is no driver handler to take the TXB, dont' bother | |
596 | * creating it... */ | |
597 | if ((!ieee->hard_start_xmit && !(ieee->softmac_features & IEEE_SOFTMAC_TX_QUEUE))|| | |
598 | ((!ieee->softmac_data_hard_start_xmit && (ieee->softmac_features & IEEE_SOFTMAC_TX_QUEUE)))) { | |
599 | printk(KERN_WARNING "%s: No xmit handler.\n", | |
600 | ieee->dev->name); | |
601 | goto success; | |
602 | } | |
603 | ||
604 | ||
94a79942 | 605 | if (likely(ieee->raw_tx == 0)){ |
ecdfa446 GKH |
606 | if (unlikely(skb->len < SNAP_SIZE + sizeof(u16))) { |
607 | printk(KERN_WARNING "%s: skb too small (%d).\n", | |
608 | ieee->dev->name, skb->len); | |
609 | goto success; | |
610 | } | |
94a79942 LF |
611 | /* Save source and destination addresses */ |
612 | memcpy(dest, skb->data, ETH_ALEN); | |
613 | memcpy(src, skb->data+ETH_ALEN, ETH_ALEN); | |
ecdfa446 GKH |
614 | |
615 | memset(skb->cb, 0, sizeof(skb->cb)); | |
616 | ether_type = ntohs(((struct ethhdr *)skb->data)->h_proto); | |
617 | ||
94a79942 LF |
618 | if (ieee->iw_mode == IW_MODE_MONITOR) |
619 | { | |
620 | txb = rtllib_alloc_txb(1, skb->len, GFP_ATOMIC); | |
621 | if (unlikely(!txb)) { | |
622 | printk(KERN_WARNING "%s: Could not allocate TXB\n", | |
623 | ieee->dev->name); | |
624 | goto failed; | |
625 | } | |
ecdfa446 | 626 | |
94a79942 LF |
627 | txb->encrypted = 0; |
628 | txb->payload_size = skb->len; | |
629 | memcpy(skb_put(txb->fragments[0],skb->len), skb->data, skb->len); | |
ecdfa446 | 630 | |
ecdfa446 GKH |
631 | goto success; |
632 | } | |
ecdfa446 | 633 | |
55dc4eb3 | 634 | if (skb->len > 282) { |
94a79942 | 635 | if (ETH_P_IP == ether_type) { |
65a43784 | 636 | const struct iphdr *ip = (struct iphdr *)((u8 *)skb->data+14); |
94a79942 | 637 | if (IPPROTO_UDP == ip->protocol) { |
65a43784 | 638 | struct udphdr *udp = (struct udphdr *)((u8 *)ip + (ip->ihl << 2)); |
94a79942 LF |
639 | if (((((u8 *)udp)[1] == 68) && (((u8 *)udp)[3] == 67)) || |
640 | ((((u8 *)udp)[1] == 67) && (((u8 *)udp)[3] == 68))) { | |
65a43784 | 641 | bdhcp = true; |
94a79942 | 642 | ieee->LPSDelayCnt = 200; |
65a43784 | 643 | } |
644 | } | |
94a79942 LF |
645 | }else if (ETH_P_ARP == ether_type){ |
646 | printk("=================>DHCP Protocol start tx ARP pkt!!\n"); | |
647 | bdhcp = true; | |
648 | ieee->LPSDelayCnt = ieee->current_network.tim.tim_count; | |
649 | ||
65a43784 | 650 | |
65a43784 | 651 | } |
94a79942 | 652 | } |
65a43784 | 653 | |
94a79942 LF |
654 | skb->priority = rtllib_classify(skb, IsAmsdu); |
655 | crypt = ieee->crypt[ieee->tx_keyidx]; | |
656 | encrypt = !(ether_type == ETH_P_PAE && ieee->ieee802_1x) && | |
657 | ieee->host_encrypt && crypt && crypt->ops; | |
658 | if (!encrypt && ieee->ieee802_1x && | |
659 | ieee->drop_unencrypted && ether_type != ETH_P_PAE) { | |
660 | stats->tx_dropped++; | |
661 | goto success; | |
662 | } | |
94a79942 LF |
663 | if (crypt && !encrypt && ether_type == ETH_P_PAE) { |
664 | struct eapol *eap = (struct eapol *)(skb->data + | |
665 | sizeof(struct ethhdr) - SNAP_SIZE - sizeof(u16)); | |
666 | RTLLIB_DEBUG_EAP("TX: IEEE 802.11 EAPOL frame: %s\n", | |
667 | eap_get_type(eap->type)); | |
668 | } | |
ecdfa446 | 669 | |
94a79942 LF |
670 | /* Advance the SKB to the start of the payload */ |
671 | skb_pull(skb, sizeof(struct ethhdr)); | |
ecdfa446 GKH |
672 | |
673 | /* Determine total amount of storage required for TXB packets */ | |
94a79942 | 674 | bytes = skb->len + SNAP_SIZE + sizeof(u16); |
ecdfa446 GKH |
675 | |
676 | if (encrypt) | |
94a79942 | 677 | fc = RTLLIB_FTYPE_DATA | RTLLIB_FCTL_WEP; |
ecdfa446 | 678 | else |
94a79942 | 679 | fc = RTLLIB_FTYPE_DATA; |
ecdfa446 | 680 | |
94a79942 LF |
681 | if (qos_actived) |
682 | fc |= RTLLIB_STYPE_QOS_DATA; | |
ecdfa446 | 683 | else |
94a79942 | 684 | fc |= RTLLIB_STYPE_DATA; |
ecdfa446 GKH |
685 | |
686 | if (ieee->iw_mode == IW_MODE_INFRA) { | |
94a79942 | 687 | fc |= RTLLIB_FCTL_TODS; |
ecdfa446 GKH |
688 | /* To DS: Addr1 = BSSID, Addr2 = SA, |
689 | Addr3 = DA */ | |
690 | memcpy(&header.addr1, ieee->current_network.bssid, ETH_ALEN); | |
691 | memcpy(&header.addr2, &src, ETH_ALEN); | |
94a79942 LF |
692 | if (IsAmsdu) |
693 | memcpy(&header.addr3, ieee->current_network.bssid, ETH_ALEN); | |
694 | else | |
695 | memcpy(&header.addr3, &dest, ETH_ALEN); | |
ecdfa446 GKH |
696 | } else if (ieee->iw_mode == IW_MODE_ADHOC) { |
697 | /* not From/To DS: Addr1 = DA, Addr2 = SA, | |
698 | Addr3 = BSSID */ | |
699 | memcpy(&header.addr1, dest, ETH_ALEN); | |
700 | memcpy(&header.addr2, src, ETH_ALEN); | |
701 | memcpy(&header.addr3, ieee->current_network.bssid, ETH_ALEN); | |
702 | } | |
703 | ||
94a79942 LF |
704 | bIsMulticast = is_broadcast_ether_addr(header.addr1) ||is_multicast_ether_addr(header.addr1); |
705 | ||
ecdfa446 GKH |
706 | header.frame_ctl = cpu_to_le16(fc); |
707 | ||
708 | /* Determine fragmentation size based on destination (multicast | |
709 | * and broadcast are not fragmented) */ | |
94a79942 | 710 | if (bIsMulticast) { |
ecdfa446 GKH |
711 | frag_size = MAX_FRAG_THRESHOLD; |
712 | qos_ctl |= QOS_CTL_NOTCONTAIN_ACK; | |
94a79942 LF |
713 | } else { |
714 | frag_size = ieee->fts; | |
ecdfa446 GKH |
715 | qos_ctl = 0; |
716 | } | |
717 | ||
94a79942 LF |
718 | if (qos_actived) { |
719 | hdr_len = RTLLIB_3ADDR_LEN + 2; | |
720 | ||
721 | /* in case we are a client verify acm is not set for this ac */ | |
722 | while (unlikely(ieee->wmm_acm & (0x01 << skb->priority))) { | |
723 | printk("skb->priority = %x\n", skb->priority); | |
724 | if (wme_downgrade_ac(skb)) { | |
725 | break; | |
726 | } | |
727 | printk("converted skb->priority = %x\n", skb->priority); | |
728 | } | |
729 | qos_ctl |= skb->priority; | |
730 | header.qos_ctl = cpu_to_le16(qos_ctl & RTLLIB_QOS_TID); | |
ecdfa446 | 731 | } else { |
94a79942 | 732 | hdr_len = RTLLIB_3ADDR_LEN; |
ecdfa446 GKH |
733 | } |
734 | /* Determine amount of payload per fragment. Regardless of if | |
735 | * this stack is providing the full 802.11 header, one will | |
736 | * eventually be affixed to this fragment -- so we must account for | |
737 | * it when determining the amount of payload space. */ | |
738 | bytes_per_frag = frag_size - hdr_len; | |
739 | if (ieee->config & | |
94a79942 LF |
740 | (CFG_RTLLIB_COMPUTE_FCS | CFG_RTLLIB_RESERVE_FCS)) |
741 | bytes_per_frag -= RTLLIB_FCS_LEN; | |
ecdfa446 | 742 | |
94a79942 LF |
743 | /* Each fragment may need to have room for encryptiong pre/postfix */ |
744 | if (encrypt) { | |
ecdfa446 GKH |
745 | bytes_per_frag -= crypt->ops->extra_prefix_len + |
746 | crypt->ops->extra_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 | ||
757 | /* When we allocate the TXB we allocate enough space for the reserve | |
758 | * and full fragment bytes (bytes_per_frag doesn't include prefix, | |
759 | * postfix, header, FCS, etc.) */ | |
94a79942 | 760 | txb = rtllib_alloc_txb(nr_frags, frag_size + ieee->tx_headroom, GFP_ATOMIC); |
ecdfa446 GKH |
761 | if (unlikely(!txb)) { |
762 | printk(KERN_WARNING "%s: Could not allocate TXB\n", | |
763 | ieee->dev->name); | |
764 | goto failed; | |
765 | } | |
766 | txb->encrypted = encrypt; | |
767 | txb->payload_size = bytes; | |
768 | ||
94a79942 | 769 | if (qos_actived) |
ecdfa446 GKH |
770 | { |
771 | txb->queue_index = UP2AC(skb->priority); | |
772 | } else { | |
94a79942 | 773 | txb->queue_index = WME_AC_BE;; |
ecdfa446 GKH |
774 | } |
775 | ||
ecdfa446 GKH |
776 | for (i = 0; i < nr_frags; i++) { |
777 | skb_frag = txb->fragments[i]; | |
3b83db43 | 778 | tcb_desc = (struct cb_desc *)(skb_frag->cb + MAX_DEV_ADDR_SIZE); |
94a79942 LF |
779 | if (qos_actived){ |
780 | skb_frag->priority = skb->priority; | |
ecdfa446 GKH |
781 | tcb_desc->queue_index = UP2AC(skb->priority); |
782 | } else { | |
94a79942 LF |
783 | skb_frag->priority = WME_AC_BE; |
784 | tcb_desc->queue_index = WME_AC_BE; | |
ecdfa446 GKH |
785 | } |
786 | skb_reserve(skb_frag, ieee->tx_headroom); | |
787 | ||
788 | if (encrypt){ | |
789 | if (ieee->hwsec_active) | |
790 | tcb_desc->bHwSec = 1; | |
791 | else | |
792 | tcb_desc->bHwSec = 0; | |
793 | skb_reserve(skb_frag, crypt->ops->extra_prefix_len); | |
94a79942 | 794 | } else { |
ecdfa446 GKH |
795 | tcb_desc->bHwSec = 0; |
796 | } | |
94a79942 | 797 | frag_hdr = (struct rtllib_hdr_3addrqos *)skb_put(skb_frag, hdr_len); |
ecdfa446 GKH |
798 | memcpy(frag_hdr, &header, hdr_len); |
799 | ||
800 | /* If this is not the last fragment, then add the MOREFRAGS | |
801 | * bit to the frame control */ | |
802 | if (i != nr_frags - 1) { | |
803 | frag_hdr->frame_ctl = cpu_to_le16( | |
94a79942 | 804 | fc | RTLLIB_FCTL_MOREFRAGS); |
ecdfa446 GKH |
805 | bytes = bytes_per_frag; |
806 | ||
807 | } else { | |
808 | /* The last fragment takes the remaining length */ | |
809 | bytes = bytes_last_frag; | |
810 | } | |
94a79942 | 811 | if ((qos_actived) && (!bIsMulticast)) |
ecdfa446 | 812 | { |
94a79942 LF |
813 | frag_hdr->seq_ctl = rtllib_query_seqnum(ieee, skb_frag, header.addr1); |
814 | frag_hdr->seq_ctl = cpu_to_le16(frag_hdr->seq_ctl<<4 | i); | |
ecdfa446 GKH |
815 | } else { |
816 | frag_hdr->seq_ctl = cpu_to_le16(ieee->seq_ctrl[0]<<4 | i); | |
817 | } | |
ecdfa446 GKH |
818 | /* Put a SNAP header on the first fragment */ |
819 | if (i == 0) { | |
94a79942 | 820 | rtllib_put_snap( |
ecdfa446 GKH |
821 | skb_put(skb_frag, SNAP_SIZE + sizeof(u16)), |
822 | ether_type); | |
823 | bytes -= SNAP_SIZE + sizeof(u16); | |
824 | } | |
825 | ||
826 | memcpy(skb_put(skb_frag, bytes), skb->data, bytes); | |
827 | ||
828 | /* Advance the SKB... */ | |
829 | skb_pull(skb, bytes); | |
830 | ||
831 | /* Encryption routine will move the header forward in order | |
832 | * to insert the IV between the header and the payload */ | |
833 | if (encrypt) | |
94a79942 | 834 | rtllib_encrypt_fragment(ieee, skb_frag, hdr_len); |
ecdfa446 | 835 | if (ieee->config & |
94a79942 | 836 | (CFG_RTLLIB_COMPUTE_FCS | CFG_RTLLIB_RESERVE_FCS)) |
ecdfa446 GKH |
837 | skb_put(skb_frag, 4); |
838 | } | |
839 | ||
94a79942 | 840 | if ((qos_actived) && (!bIsMulticast)) { |
ecdfa446 GKH |
841 | if (ieee->seq_ctrl[UP2AC(skb->priority) + 1] == 0xFFF) |
842 | ieee->seq_ctrl[UP2AC(skb->priority) + 1] = 0; | |
843 | else | |
844 | ieee->seq_ctrl[UP2AC(skb->priority) + 1]++; | |
845 | } else { | |
94a79942 | 846 | if (ieee->seq_ctrl[0] == 0xFFF) |
ecdfa446 GKH |
847 | ieee->seq_ctrl[0] = 0; |
848 | else | |
849 | ieee->seq_ctrl[0]++; | |
850 | } | |
851 | }else{ | |
94a79942 | 852 | if (unlikely(skb->len < sizeof(struct rtllib_hdr_3addr))) { |
ecdfa446 GKH |
853 | printk(KERN_WARNING "%s: skb too small (%d).\n", |
854 | ieee->dev->name, skb->len); | |
855 | goto success; | |
856 | } | |
857 | ||
94a79942 LF |
858 | txb = rtllib_alloc_txb(1, skb->len, GFP_ATOMIC); |
859 | if (!txb){ | |
ecdfa446 GKH |
860 | printk(KERN_WARNING "%s: Could not allocate TXB\n", |
861 | ieee->dev->name); | |
862 | goto failed; | |
863 | } | |
864 | ||
865 | txb->encrypted = 0; | |
866 | txb->payload_size = skb->len; | |
867 | memcpy(skb_put(txb->fragments[0],skb->len), skb->data, skb->len); | |
868 | } | |
869 | ||
870 | success: | |
ecdfa446 GKH |
871 | if (txb) |
872 | { | |
3b83db43 | 873 | struct cb_desc *tcb_desc = (struct cb_desc *)(txb->fragments[0]->cb + MAX_DEV_ADDR_SIZE); |
ecdfa446 | 874 | tcb_desc->bTxEnableFwCalcDur = 1; |
94a79942 | 875 | tcb_desc->priority = skb->priority; |
65a43784 | 876 | |
94a79942 LF |
877 | if (ether_type == ETH_P_PAE) { |
878 | if (ieee->pHTInfo->IOTAction & HT_IOT_ACT_WA_IOT_Broadcom) | |
879 | { | |
880 | tcb_desc->data_rate = MgntQuery_TxRateExcludeCCKRates(ieee); | |
881 | tcb_desc->bTxDisableRateFallBack = false; | |
882 | }else{ | |
883 | tcb_desc->data_rate = ieee->basic_rate; | |
65a43784 | 884 | tcb_desc->bTxDisableRateFallBack = 1; |
94a79942 LF |
885 | } |
886 | ||
65a43784 | 887 | |
888 | tcb_desc->RATRIndex = 7; | |
889 | tcb_desc->bTxUseDriverAssingedRate = 1; | |
94a79942 LF |
890 | } else { |
891 | if (is_multicast_ether_addr(header.addr1)) | |
892 | tcb_desc->bMulticast = 1; | |
893 | if (is_broadcast_ether_addr(header.addr1)) | |
894 | tcb_desc->bBroadcast = 1; | |
94a79942 LF |
895 | rtllib_txrate_selectmode(ieee, tcb_desc); |
896 | if ( tcb_desc->bMulticast || tcb_desc->bBroadcast) | |
897 | tcb_desc->data_rate = ieee->basic_rate; | |
898 | else | |
899 | tcb_desc->data_rate = CURRENT_RATE(ieee->mode, ieee->rate, ieee->HTCurrentOperaRate); | |
900 | ||
901 | if (bdhcp == true){ | |
902 | if (ieee->pHTInfo->IOTAction & HT_IOT_ACT_WA_IOT_Broadcom) | |
903 | { | |
904 | tcb_desc->data_rate = MgntQuery_TxRateExcludeCCKRates(ieee); | |
905 | tcb_desc->bTxDisableRateFallBack = false; | |
906 | }else{ | |
907 | tcb_desc->data_rate = MGN_1M; | |
908 | tcb_desc->bTxDisableRateFallBack = 1; | |
909 | } | |
65a43784 | 910 | |
911 | ||
94a79942 LF |
912 | tcb_desc->RATRIndex = 7; |
913 | tcb_desc->bTxUseDriverAssingedRate = 1; | |
914 | tcb_desc->bdhcp = 1; | |
915 | } | |
916 | ||
917 | rtllib_qurey_ShortPreambleMode(ieee, tcb_desc); | |
918 | rtllib_tx_query_agg_cap(ieee, txb->fragments[0], tcb_desc); | |
919 | rtllib_query_HTCapShortGI(ieee, tcb_desc); | |
920 | rtllib_query_BandwidthMode(ieee, tcb_desc); | |
921 | rtllib_query_protectionmode(ieee, tcb_desc, txb->fragments[0]); | |
94a79942 | 922 | } |
ecdfa446 GKH |
923 | } |
924 | spin_unlock_irqrestore(&ieee->lock, flags); | |
925 | dev_kfree_skb_any(skb); | |
926 | if (txb) { | |
927 | if (ieee->softmac_features & IEEE_SOFTMAC_TX_QUEUE){ | |
94a79942 LF |
928 | dev->stats.tx_packets++; |
929 | dev->stats.tx_bytes += txb->payload_size; | |
930 | rtllib_softmac_xmit(txb, ieee); | |
ecdfa446 | 931 | }else{ |
94a79942 | 932 | if ((*ieee->hard_start_xmit)(txb, dev) == 0) { |
ecdfa446 GKH |
933 | stats->tx_packets++; |
934 | stats->tx_bytes += txb->payload_size; | |
935 | return 0; | |
936 | } | |
94a79942 | 937 | rtllib_txb_free(txb); |
ecdfa446 GKH |
938 | } |
939 | } | |
940 | ||
941 | return 0; | |
942 | ||
943 | failed: | |
944 | spin_unlock_irqrestore(&ieee->lock, flags); | |
945 | netif_stop_queue(dev); | |
946 | stats->tx_errors++; | |
947 | return 1; | |
948 | ||
949 | } | |
94a79942 LF |
950 | int rtllib_xmit(struct sk_buff *skb, struct net_device *dev) |
951 | { | |
952 | memset(skb->cb, 0, sizeof(skb->cb)); | |
953 | return rtllib_xmit_inter(skb, dev); | |
954 | } |