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92b96797 FB |
1 | /* |
2 | * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc. | |
3 | * All rights reserved. | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License as published by | |
7 | * the Free Software Foundation; either version 2 of the License, or | |
8 | * (at your option) any later version. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, | |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | * GNU General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License along | |
16 | * with this program; if not, write to the Free Software Foundation, Inc., | |
17 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 | * | |
19 | * File: rxtx.c | |
20 | * | |
21 | * Purpose: handle WMAC/802.3/802.11 rx & tx functions | |
22 | * | |
23 | * Author: Lyndon Chen | |
24 | * | |
25 | * Date: May 20, 2003 | |
26 | * | |
27 | * Functions: | |
9ec7f2d8 | 28 | * vnt_generate_tx_parameter - Generate tx dma required parameter. |
435ae3be | 29 | * vnt_get_duration_le - get tx data required duration |
f2aabee6 | 30 | * vnt_get_rtscts_duration_le- get rtx/cts required duration |
aadf7d13 | 31 | * vnt_get_rtscts_rsvtime_le- get rts/cts reserved time |
3815a27b | 32 | * vnt_get_rsvtime- get frame reserved time |
4f31668f | 33 | * vnt_fill_cts_head- fulfill CTS ctl header |
92b96797 FB |
34 | * |
35 | * Revision History: | |
36 | * | |
37 | */ | |
38 | ||
ccc103f5 | 39 | #include <linux/etherdevice.h> |
92b96797 | 40 | #include "device.h" |
92b96797 | 41 | #include "rxtx.h" |
92b96797 | 42 | #include "card.h" |
92b96797 | 43 | #include "mac.h" |
92b96797 | 44 | #include "rf.h" |
92b96797 | 45 | #include "usbpipe.h" |
9d26d60f | 46 | |
1a4d4509 MP |
47 | static const u16 vnt_time_stampoff[2][MAX_RATE] = { |
48 | {384, 288, 226, 209, 54, 43, 37, 31, 28, 25, 24, 23},/* Long Preamble */ | |
49 | {384, 192, 130, 113, 54, 43, 37, 31, 28, 25, 24, 23},/* Short Preamble */ | |
50 | }; | |
92b96797 | 51 | |
e3f31874 MP |
52 | static const u16 vnt_fb_opt0[2][5] = { |
53 | {RATE_12M, RATE_18M, RATE_24M, RATE_36M, RATE_48M}, /* fallback_rate0 */ | |
54 | {RATE_12M, RATE_12M, RATE_18M, RATE_24M, RATE_36M}, /* fallback_rate1 */ | |
55 | }; | |
56 | ||
2331ba42 MP |
57 | static const u16 vnt_fb_opt1[2][5] = { |
58 | {RATE_12M, RATE_18M, RATE_24M, RATE_24M, RATE_36M}, /* fallback_rate0 */ | |
73c4c6ee | 59 | {RATE_6M, RATE_6M, RATE_12M, RATE_12M, RATE_18M}, /* fallback_rate1 */ |
2331ba42 | 60 | }; |
92b96797 | 61 | |
92b96797 FB |
62 | #define RTSDUR_BB 0 |
63 | #define RTSDUR_BA 1 | |
64 | #define RTSDUR_AA 2 | |
65 | #define CTSDUR_BA 3 | |
66 | #define RTSDUR_BA_F0 4 | |
67 | #define RTSDUR_AA_F0 5 | |
68 | #define RTSDUR_BA_F1 6 | |
69 | #define RTSDUR_AA_F1 7 | |
70 | #define CTSDUR_BA_F0 8 | |
71 | #define CTSDUR_BA_F1 9 | |
72 | #define DATADUR_B 10 | |
73 | #define DATADUR_A 11 | |
74 | #define DATADUR_A_F0 12 | |
75 | #define DATADUR_A_F1 13 | |
76 | ||
aceaf018 | 77 | static struct vnt_usb_send_context |
a032b16c | 78 | *vnt_get_free_context(struct vnt_private *priv) |
92b96797 | 79 | { |
b89f3b94 | 80 | struct vnt_usb_send_context *context = NULL; |
d56131de | 81 | int ii; |
92b96797 | 82 | |
604631ff | 83 | dev_dbg(&priv->usb->dev, "%s\n", __func__); |
b89f3b94 | 84 | |
03b7e354 | 85 | for (ii = 0; ii < priv->num_tx_context; ii++) { |
f7e4a8f4 | 86 | if (!priv->tx_context[ii]) |
b89f3b94 MP |
87 | return NULL; |
88 | ||
f7e4a8f4 | 89 | context = priv->tx_context[ii]; |
30a05b39 MP |
90 | if (context->in_use == false) { |
91 | context->in_use = true; | |
92 | memset(context->data, 0, | |
b89f3b94 | 93 | MAX_TOTAL_SIZE_WITH_ALL_HEADERS); |
1622c8fc MP |
94 | |
95 | context->hdr = NULL; | |
96 | ||
b89f3b94 MP |
97 | return context; |
98 | } | |
99 | } | |
100 | ||
03b7e354 | 101 | if (ii == priv->num_tx_context) |
604631ff | 102 | dev_dbg(&priv->usb->dev, "%s No Free Tx Context\n", __func__); |
aceaf018 | 103 | |
5c851383 | 104 | return NULL; |
92b96797 FB |
105 | } |
106 | ||
dab085b1 | 107 | static __le16 vnt_time_stamp_off(struct vnt_private *priv, u16 rate) |
f115e76a | 108 | { |
98e93fe5 | 109 | return cpu_to_le16(vnt_time_stampoff[priv->preamble_type % 2] |
f115e76a MP |
110 | [rate % MAX_RATE]); |
111 | } | |
112 | ||
3815a27b | 113 | static u32 vnt_get_rsvtime(struct vnt_private *priv, u8 pkt_type, |
3fd5620f | 114 | u32 frame_length, u16 rate, int need_ack) |
92b96797 | 115 | { |
3fd5620f | 116 | u32 data_time, ack_time; |
92b96797 | 117 | |
98e93fe5 | 118 | data_time = vnt_get_frame_time(priv->preamble_type, pkt_type, |
3fd5620f | 119 | frame_length, rate); |
92b96797 | 120 | |
3fd5620f | 121 | if (pkt_type == PK_TYPE_11B) |
98e93fe5 | 122 | ack_time = vnt_get_frame_time(priv->preamble_type, pkt_type, |
d80bf43c | 123 | 14, (u16)priv->top_cck_basic_rate); |
3fd5620f | 124 | else |
98e93fe5 | 125 | ack_time = vnt_get_frame_time(priv->preamble_type, pkt_type, |
3c8a5b25 | 126 | 14, (u16)priv->top_ofdm_basic_rate); |
3fd5620f MP |
127 | |
128 | if (need_ack) | |
ff5fee22 | 129 | return data_time + priv->sifs + ack_time; |
3fd5620f MP |
130 | |
131 | return data_time; | |
92b96797 FB |
132 | } |
133 | ||
2075f654 | 134 | static __le16 vnt_rxtx_rsvtime_le16(struct vnt_private *priv, u8 pkt_type, |
9c3806d5 MP |
135 | u32 frame_length, u16 rate, int need_ack) |
136 | { | |
3815a27b | 137 | return cpu_to_le16((u16)vnt_get_rsvtime(priv, pkt_type, |
9c3806d5 MP |
138 | frame_length, rate, need_ack)); |
139 | } | |
140 | ||
aadf7d13 | 141 | static __le16 vnt_get_rtscts_rsvtime_le(struct vnt_private *priv, |
3b6cee7b | 142 | u8 rsv_type, u8 pkt_type, u32 frame_length, u16 current_rate) |
92b96797 | 143 | { |
342e2e20 | 144 | u32 rrv_time, rts_time, cts_time, ack_time, data_time; |
92b96797 | 145 | |
342e2e20 | 146 | rrv_time = rts_time = cts_time = ack_time = data_time = 0; |
92b96797 | 147 | |
98e93fe5 | 148 | data_time = vnt_get_frame_time(priv->preamble_type, pkt_type, |
3b6cee7b | 149 | frame_length, current_rate); |
342e2e20 MP |
150 | |
151 | if (rsv_type == 0) { | |
98e93fe5 | 152 | rts_time = vnt_get_frame_time(priv->preamble_type, |
d80bf43c | 153 | pkt_type, 20, priv->top_cck_basic_rate); |
98e93fe5 | 154 | cts_time = ack_time = vnt_get_frame_time(priv->preamble_type, |
d80bf43c | 155 | pkt_type, 14, priv->top_cck_basic_rate); |
342e2e20 | 156 | } else if (rsv_type == 1) { |
98e93fe5 | 157 | rts_time = vnt_get_frame_time(priv->preamble_type, |
d80bf43c | 158 | pkt_type, 20, priv->top_cck_basic_rate); |
98e93fe5 | 159 | cts_time = vnt_get_frame_time(priv->preamble_type, pkt_type, |
d80bf43c | 160 | 14, priv->top_cck_basic_rate); |
98e93fe5 | 161 | ack_time = vnt_get_frame_time(priv->preamble_type, pkt_type, |
3c8a5b25 | 162 | 14, priv->top_ofdm_basic_rate); |
342e2e20 | 163 | } else if (rsv_type == 2) { |
98e93fe5 | 164 | rts_time = vnt_get_frame_time(priv->preamble_type, pkt_type, |
3c8a5b25 | 165 | 20, priv->top_ofdm_basic_rate); |
98e93fe5 | 166 | cts_time = ack_time = vnt_get_frame_time(priv->preamble_type, |
3c8a5b25 | 167 | pkt_type, 14, priv->top_ofdm_basic_rate); |
342e2e20 | 168 | } else if (rsv_type == 3) { |
98e93fe5 | 169 | cts_time = vnt_get_frame_time(priv->preamble_type, pkt_type, |
d80bf43c | 170 | 14, priv->top_cck_basic_rate); |
98e93fe5 | 171 | ack_time = vnt_get_frame_time(priv->preamble_type, pkt_type, |
3c8a5b25 | 172 | 14, priv->top_ofdm_basic_rate); |
342e2e20 | 173 | |
ff5fee22 | 174 | rrv_time = cts_time + ack_time + data_time + 2 * priv->sifs; |
342e2e20 | 175 | |
20338015 | 176 | return cpu_to_le16((u16)rrv_time); |
342e2e20 MP |
177 | } |
178 | ||
ff5fee22 | 179 | rrv_time = rts_time + cts_time + ack_time + data_time + 3 * priv->sifs; |
92b96797 | 180 | |
342e2e20 | 181 | return cpu_to_le16((u16)rrv_time); |
92b96797 FB |
182 | } |
183 | ||
0871dc69 | 184 | static __le16 vnt_get_duration_le(struct vnt_private *priv, |
a4c2a8a4 | 185 | u8 pkt_type, int need_ack) |
92b96797 | 186 | { |
a4c2a8a4 | 187 | u32 ack_time = 0; |
92b96797 | 188 | |
a4c2a8a4 MP |
189 | if (need_ack) { |
190 | if (pkt_type == PK_TYPE_11B) | |
0871dc69 MP |
191 | ack_time = vnt_get_frame_time(priv->preamble_type, |
192 | pkt_type, 14, priv->top_cck_basic_rate); | |
b02ccd59 | 193 | else |
0871dc69 MP |
194 | ack_time = vnt_get_frame_time(priv->preamble_type, |
195 | pkt_type, 14, priv->top_ofdm_basic_rate); | |
a4c2a8a4 | 196 | |
0871dc69 | 197 | return cpu_to_le16((u16)(priv->sifs + ack_time)); |
b02ccd59 | 198 | } |
92b96797 | 199 | |
92b96797 FB |
200 | return 0; |
201 | } | |
202 | ||
cca48e3c MP |
203 | static __le16 vnt_get_rtscts_duration_le(struct vnt_usb_send_context *context, |
204 | u8 dur_type, u8 pkt_type, u16 rate) | |
92b96797 | 205 | { |
cca48e3c | 206 | struct vnt_private *priv = context->priv; |
7beae9a2 | 207 | u32 cts_time = 0, dur_time = 0; |
cca48e3c MP |
208 | u32 frame_length = context->frame_len; |
209 | u8 need_ack = context->need_ack; | |
92b96797 | 210 | |
7beae9a2 | 211 | switch (dur_type) { |
ecd80240 MP |
212 | case RTSDUR_BB: |
213 | case RTSDUR_BA: | |
214 | case RTSDUR_BA_F0: | |
215 | case RTSDUR_BA_F1: | |
98e93fe5 | 216 | cts_time = vnt_get_frame_time(priv->preamble_type, |
d80bf43c | 217 | pkt_type, 14, priv->top_cck_basic_rate); |
ff5fee22 | 218 | dur_time = cts_time + 2 * priv->sifs + |
3815a27b | 219 | vnt_get_rsvtime(priv, pkt_type, |
7beae9a2 | 220 | frame_length, rate, need_ack); |
ecd80240 | 221 | break; |
92b96797 | 222 | |
ecd80240 MP |
223 | case RTSDUR_AA: |
224 | case RTSDUR_AA_F0: | |
225 | case RTSDUR_AA_F1: | |
98e93fe5 | 226 | cts_time = vnt_get_frame_time(priv->preamble_type, |
3c8a5b25 | 227 | pkt_type, 14, priv->top_ofdm_basic_rate); |
ff5fee22 | 228 | dur_time = cts_time + 2 * priv->sifs + |
3815a27b | 229 | vnt_get_rsvtime(priv, pkt_type, |
7beae9a2 | 230 | frame_length, rate, need_ack); |
ecd80240 | 231 | break; |
92b96797 | 232 | |
ecd80240 MP |
233 | case CTSDUR_BA: |
234 | case CTSDUR_BA_F0: | |
235 | case CTSDUR_BA_F1: | |
ff5fee22 | 236 | dur_time = priv->sifs + vnt_get_rsvtime(priv, |
7beae9a2 | 237 | pkt_type, frame_length, rate, need_ack); |
ecd80240 | 238 | break; |
92b96797 | 239 | |
ecd80240 MP |
240 | default: |
241 | break; | |
242 | } | |
92b96797 | 243 | |
7beae9a2 | 244 | return cpu_to_le16((u16)dur_time); |
92b96797 FB |
245 | } |
246 | ||
1622c8fc MP |
247 | static u16 vnt_mac_hdr_pos(struct vnt_usb_send_context *tx_context, |
248 | struct ieee80211_hdr *hdr) | |
249 | { | |
250 | u8 *head = tx_context->data + offsetof(struct vnt_tx_buffer, fifo_head); | |
251 | u8 *hdr_pos = (u8 *)hdr; | |
252 | ||
253 | tx_context->hdr = hdr; | |
254 | if (!tx_context->hdr) | |
255 | return 0; | |
256 | ||
257 | return (u16)(hdr_pos - head); | |
258 | } | |
259 | ||
c2c32da3 | 260 | static u16 vnt_rxtx_datahead_g(struct vnt_usb_send_context *tx_context, |
798f0601 | 261 | struct vnt_tx_datahead_g *buf) |
78363fd1 | 262 | { |
c2c32da3 MP |
263 | |
264 | struct vnt_private *priv = tx_context->priv; | |
893cc709 MP |
265 | struct ieee80211_hdr *hdr = |
266 | (struct ieee80211_hdr *)tx_context->skb->data; | |
0f5567cb | 267 | u32 frame_len = tx_context->frame_len; |
798f0601 | 268 | u16 rate = tx_context->tx_rate; |
2eca8dbb | 269 | u8 need_ack = tx_context->need_ack; |
c2c32da3 | 270 | |
78363fd1 | 271 | /* Get SignalField,ServiceField,Length */ |
e8c9875c | 272 | vnt_get_phy_field(priv, frame_len, rate, tx_context->pkt_type, &buf->a); |
d80bf43c | 273 | vnt_get_phy_field(priv, frame_len, priv->top_cck_basic_rate, |
78363fd1 MP |
274 | PK_TYPE_11B, &buf->b); |
275 | ||
276 | /* Get Duration and TimeStamp */ | |
893cc709 MP |
277 | if (ieee80211_is_pspoll(hdr->frame_control)) { |
278 | __le16 dur = cpu_to_le16(priv->current_aid | BIT(14) | BIT(15)); | |
279 | ||
280 | buf->duration_a = dur; | |
281 | buf->duration_b = dur; | |
282 | } else { | |
e8c9875c MP |
283 | buf->duration_a = vnt_get_duration_le(priv, |
284 | tx_context->pkt_type, need_ack); | |
435ae3be | 285 | buf->duration_b = vnt_get_duration_le(priv, |
893cc709 MP |
286 | PK_TYPE_11B, need_ack); |
287 | } | |
78363fd1 | 288 | |
10bb39a0 MP |
289 | buf->time_stamp_off_a = vnt_time_stamp_off(priv, rate); |
290 | buf->time_stamp_off_b = vnt_time_stamp_off(priv, | |
d80bf43c | 291 | priv->top_cck_basic_rate); |
78363fd1 | 292 | |
1622c8fc MP |
293 | tx_context->tx_hdr_size = vnt_mac_hdr_pos(tx_context, &buf->hdr); |
294 | ||
c4cf6dfb | 295 | return le16_to_cpu(buf->duration_a); |
78363fd1 MP |
296 | } |
297 | ||
c2c32da3 | 298 | static u16 vnt_rxtx_datahead_g_fb(struct vnt_usb_send_context *tx_context, |
798f0601 | 299 | struct vnt_tx_datahead_g_fb *buf) |
5b852f53 | 300 | { |
c2c32da3 | 301 | struct vnt_private *priv = tx_context->priv; |
0f5567cb | 302 | u32 frame_len = tx_context->frame_len; |
798f0601 | 303 | u16 rate = tx_context->tx_rate; |
2eca8dbb | 304 | u8 need_ack = tx_context->need_ack; |
c2c32da3 | 305 | |
5b852f53 | 306 | /* Get SignalField,ServiceField,Length */ |
e8c9875c | 307 | vnt_get_phy_field(priv, frame_len, rate, tx_context->pkt_type, &buf->a); |
5b852f53 | 308 | |
d80bf43c | 309 | vnt_get_phy_field(priv, frame_len, priv->top_cck_basic_rate, |
5b852f53 MP |
310 | PK_TYPE_11B, &buf->b); |
311 | ||
312 | /* Get Duration and TimeStamp */ | |
e8c9875c MP |
313 | buf->duration_a = vnt_get_duration_le(priv, tx_context->pkt_type, |
314 | need_ack); | |
435ae3be | 315 | buf->duration_b = vnt_get_duration_le(priv, PK_TYPE_11B, need_ack); |
5b852f53 | 316 | |
e8c9875c MP |
317 | buf->duration_a_f0 = vnt_get_duration_le(priv, tx_context->pkt_type, |
318 | need_ack); | |
319 | buf->duration_a_f1 = vnt_get_duration_le(priv, tx_context->pkt_type, | |
320 | need_ack); | |
5b852f53 | 321 | |
10bb39a0 MP |
322 | buf->time_stamp_off_a = vnt_time_stamp_off(priv, rate); |
323 | buf->time_stamp_off_b = vnt_time_stamp_off(priv, | |
d80bf43c | 324 | priv->top_cck_basic_rate); |
5b852f53 | 325 | |
1622c8fc MP |
326 | tx_context->tx_hdr_size = vnt_mac_hdr_pos(tx_context, &buf->hdr); |
327 | ||
c4cf6dfb | 328 | return le16_to_cpu(buf->duration_a); |
5b852f53 MP |
329 | } |
330 | ||
c2c32da3 | 331 | static u16 vnt_rxtx_datahead_a_fb(struct vnt_usb_send_context *tx_context, |
798f0601 | 332 | struct vnt_tx_datahead_a_fb *buf) |
bd3f51f1 | 333 | { |
c2c32da3 | 334 | struct vnt_private *priv = tx_context->priv; |
798f0601 | 335 | u16 rate = tx_context->tx_rate; |
e8c9875c | 336 | u8 pkt_type = tx_context->pkt_type; |
2eca8dbb | 337 | u8 need_ack = tx_context->need_ack; |
0f5567cb | 338 | u32 frame_len = tx_context->frame_len; |
c2c32da3 | 339 | |
bd3f51f1 | 340 | /* Get SignalField,ServiceField,Length */ |
205056f3 | 341 | vnt_get_phy_field(priv, frame_len, rate, pkt_type, &buf->a); |
bd3f51f1 | 342 | /* Get Duration and TimeStampOff */ |
435ae3be | 343 | buf->duration = vnt_get_duration_le(priv, pkt_type, need_ack); |
bd3f51f1 | 344 | |
435ae3be MP |
345 | buf->duration_f0 = vnt_get_duration_le(priv, pkt_type, need_ack); |
346 | buf->duration_f1 = vnt_get_duration_le(priv, pkt_type, need_ack); | |
bd3f51f1 | 347 | |
10bb39a0 | 348 | buf->time_stamp_off = vnt_time_stamp_off(priv, rate); |
bd3f51f1 | 349 | |
1622c8fc MP |
350 | tx_context->tx_hdr_size = vnt_mac_hdr_pos(tx_context, &buf->hdr); |
351 | ||
c4cf6dfb | 352 | return le16_to_cpu(buf->duration); |
bd3f51f1 MP |
353 | } |
354 | ||
c2c32da3 | 355 | static u16 vnt_rxtx_datahead_ab(struct vnt_usb_send_context *tx_context, |
798f0601 | 356 | struct vnt_tx_datahead_ab *buf) |
5634a5ab | 357 | { |
c2c32da3 | 358 | struct vnt_private *priv = tx_context->priv; |
893cc709 MP |
359 | struct ieee80211_hdr *hdr = |
360 | (struct ieee80211_hdr *)tx_context->skb->data; | |
0f5567cb | 361 | u32 frame_len = tx_context->frame_len; |
798f0601 | 362 | u16 rate = tx_context->tx_rate; |
2eca8dbb | 363 | u8 need_ack = tx_context->need_ack; |
c2c32da3 | 364 | |
5634a5ab | 365 | /* Get SignalField,ServiceField,Length */ |
e8c9875c MP |
366 | vnt_get_phy_field(priv, frame_len, rate, |
367 | tx_context->pkt_type, &buf->ab); | |
893cc709 | 368 | |
5634a5ab | 369 | /* Get Duration and TimeStampOff */ |
893cc709 MP |
370 | if (ieee80211_is_pspoll(hdr->frame_control)) { |
371 | __le16 dur = cpu_to_le16(priv->current_aid | BIT(14) | BIT(15)); | |
372 | ||
373 | buf->duration = dur; | |
374 | } else { | |
e8c9875c MP |
375 | buf->duration = vnt_get_duration_le(priv, tx_context->pkt_type, |
376 | need_ack); | |
893cc709 | 377 | } |
5634a5ab | 378 | |
10bb39a0 | 379 | buf->time_stamp_off = vnt_time_stamp_off(priv, rate); |
5634a5ab | 380 | |
1622c8fc MP |
381 | tx_context->tx_hdr_size = vnt_mac_hdr_pos(tx_context, &buf->hdr); |
382 | ||
c4cf6dfb | 383 | return le16_to_cpu(buf->duration); |
5634a5ab MP |
384 | } |
385 | ||
d38b13aa MP |
386 | static int vnt_fill_ieee80211_rts(struct vnt_usb_send_context *tx_context, |
387 | struct ieee80211_rts *rts, __le16 duration) | |
5e67ee49 | 388 | { |
d38b13aa MP |
389 | struct ieee80211_hdr *hdr = |
390 | (struct ieee80211_hdr *)tx_context->skb->data; | |
391 | ||
5e67ee49 | 392 | rts->duration = duration; |
f4554d3b MP |
393 | rts->frame_control = |
394 | cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_RTS); | |
5e67ee49 | 395 | |
ccc103f5 KA |
396 | ether_addr_copy(rts->ra, hdr->addr1); |
397 | ether_addr_copy(rts->ta, hdr->addr2); | |
5e67ee49 MP |
398 | |
399 | return 0; | |
400 | } | |
401 | ||
c2c32da3 | 402 | static u16 vnt_rxtx_rts_g_head(struct vnt_usb_send_context *tx_context, |
798f0601 | 403 | struct vnt_rts_g *buf) |
5e67ee49 | 404 | { |
c2c32da3 | 405 | struct vnt_private *priv = tx_context->priv; |
5e67ee49 | 406 | u16 rts_frame_len = 20; |
798f0601 | 407 | u16 current_rate = tx_context->tx_rate; |
2eca8dbb | 408 | |
d80bf43c | 409 | vnt_get_phy_field(priv, rts_frame_len, priv->top_cck_basic_rate, |
5e67ee49 | 410 | PK_TYPE_11B, &buf->b); |
e8c9875c MP |
411 | vnt_get_phy_field(priv, rts_frame_len, priv->top_ofdm_basic_rate, |
412 | tx_context->pkt_type, &buf->a); | |
5e67ee49 | 413 | |
cca48e3c MP |
414 | buf->duration_bb = vnt_get_rtscts_duration_le(tx_context, RTSDUR_BB, |
415 | PK_TYPE_11B, | |
416 | priv->top_cck_basic_rate); | |
417 | buf->duration_aa = vnt_get_rtscts_duration_le(tx_context, RTSDUR_AA, | |
418 | tx_context->pkt_type, | |
419 | current_rate); | |
420 | buf->duration_ba = vnt_get_rtscts_duration_le(tx_context, RTSDUR_BA, | |
421 | tx_context->pkt_type, | |
422 | current_rate); | |
5e67ee49 | 423 | |
d38b13aa | 424 | vnt_fill_ieee80211_rts(tx_context, &buf->data, buf->duration_aa); |
5e67ee49 | 425 | |
798f0601 | 426 | return vnt_rxtx_datahead_g(tx_context, &buf->data_head); |
5e67ee49 MP |
427 | } |
428 | ||
c2c32da3 | 429 | static u16 vnt_rxtx_rts_g_fb_head(struct vnt_usb_send_context *tx_context, |
798f0601 | 430 | struct vnt_rts_g_fb *buf) |
ec91713a | 431 | { |
c2c32da3 | 432 | struct vnt_private *priv = tx_context->priv; |
798f0601 | 433 | u16 current_rate = tx_context->tx_rate; |
ec91713a | 434 | u16 rts_frame_len = 20; |
2eca8dbb | 435 | |
d80bf43c | 436 | vnt_get_phy_field(priv, rts_frame_len, priv->top_cck_basic_rate, |
ec91713a | 437 | PK_TYPE_11B, &buf->b); |
e8c9875c MP |
438 | vnt_get_phy_field(priv, rts_frame_len, priv->top_ofdm_basic_rate, |
439 | tx_context->pkt_type, &buf->a); | |
ec91713a | 440 | |
cca48e3c MP |
441 | buf->duration_bb = vnt_get_rtscts_duration_le(tx_context, RTSDUR_BB, |
442 | PK_TYPE_11B, | |
443 | priv->top_cck_basic_rate); | |
444 | buf->duration_aa = vnt_get_rtscts_duration_le(tx_context, RTSDUR_AA, | |
445 | tx_context->pkt_type, | |
446 | current_rate); | |
447 | buf->duration_ba = vnt_get_rtscts_duration_le(tx_context, RTSDUR_BA, | |
448 | tx_context->pkt_type, | |
449 | current_rate); | |
450 | ||
451 | buf->rts_duration_ba_f0 = | |
452 | vnt_get_rtscts_duration_le(tx_context, RTSDUR_BA_F0, | |
453 | tx_context->pkt_type, | |
454 | priv->tx_rate_fb0); | |
455 | buf->rts_duration_aa_f0 = | |
456 | vnt_get_rtscts_duration_le(tx_context, RTSDUR_AA_F0, | |
457 | tx_context->pkt_type, | |
458 | priv->tx_rate_fb0); | |
459 | buf->rts_duration_ba_f1 = | |
460 | vnt_get_rtscts_duration_le(tx_context, RTSDUR_BA_F1, | |
461 | tx_context->pkt_type, | |
462 | priv->tx_rate_fb1); | |
463 | buf->rts_duration_aa_f1 = | |
464 | vnt_get_rtscts_duration_le(tx_context, RTSDUR_AA_F1, | |
465 | tx_context->pkt_type, | |
466 | priv->tx_rate_fb1); | |
ec91713a | 467 | |
d38b13aa | 468 | vnt_fill_ieee80211_rts(tx_context, &buf->data, buf->duration_aa); |
ec91713a | 469 | |
798f0601 | 470 | return vnt_rxtx_datahead_g_fb(tx_context, &buf->data_head); |
ec91713a MP |
471 | } |
472 | ||
c2c32da3 | 473 | static u16 vnt_rxtx_rts_ab_head(struct vnt_usb_send_context *tx_context, |
798f0601 | 474 | struct vnt_rts_ab *buf) |
1712633d | 475 | { |
c2c32da3 | 476 | struct vnt_private *priv = tx_context->priv; |
798f0601 | 477 | u16 current_rate = tx_context->tx_rate; |
1712633d MP |
478 | u16 rts_frame_len = 20; |
479 | ||
e8c9875c MP |
480 | vnt_get_phy_field(priv, rts_frame_len, priv->top_ofdm_basic_rate, |
481 | tx_context->pkt_type, &buf->ab); | |
1712633d | 482 | |
cca48e3c | 483 | buf->duration = vnt_get_rtscts_duration_le(tx_context, RTSDUR_AA, |
e8c9875c | 484 | tx_context->pkt_type, |
cca48e3c | 485 | current_rate); |
1712633d | 486 | |
d38b13aa | 487 | vnt_fill_ieee80211_rts(tx_context, &buf->data, buf->duration); |
1712633d | 488 | |
798f0601 | 489 | return vnt_rxtx_datahead_ab(tx_context, &buf->data_head); |
1712633d MP |
490 | } |
491 | ||
c2c32da3 | 492 | static u16 vnt_rxtx_rts_a_fb_head(struct vnt_usb_send_context *tx_context, |
798f0601 | 493 | struct vnt_rts_a_fb *buf) |
9d2578c1 | 494 | { |
c2c32da3 | 495 | struct vnt_private *priv = tx_context->priv; |
798f0601 | 496 | u16 current_rate = tx_context->tx_rate; |
9d2578c1 | 497 | u16 rts_frame_len = 20; |
2eca8dbb | 498 | |
205056f3 | 499 | vnt_get_phy_field(priv, rts_frame_len, |
e8c9875c | 500 | priv->top_ofdm_basic_rate, tx_context->pkt_type, &buf->a); |
9d2578c1 | 501 | |
cca48e3c | 502 | buf->duration = vnt_get_rtscts_duration_le(tx_context, RTSDUR_AA, |
e8c9875c | 503 | tx_context->pkt_type, |
cca48e3c | 504 | current_rate); |
9d2578c1 | 505 | |
cca48e3c MP |
506 | buf->rts_duration_f0 = |
507 | vnt_get_rtscts_duration_le(tx_context, RTSDUR_AA_F0, | |
508 | tx_context->pkt_type, | |
509 | priv->tx_rate_fb0); | |
9d2578c1 | 510 | |
cca48e3c MP |
511 | buf->rts_duration_f1 = |
512 | vnt_get_rtscts_duration_le(tx_context, RTSDUR_AA_F1, | |
513 | tx_context->pkt_type, | |
514 | priv->tx_rate_fb1); | |
9d2578c1 | 515 | |
d38b13aa | 516 | vnt_fill_ieee80211_rts(tx_context, &buf->data, buf->duration); |
9d2578c1 | 517 | |
798f0601 | 518 | return vnt_rxtx_datahead_a_fb(tx_context, &buf->data_head); |
9d2578c1 MP |
519 | } |
520 | ||
4f31668f | 521 | static u16 vnt_fill_cts_head(struct vnt_usb_send_context *tx_context, |
798f0601 | 522 | union vnt_tx_data_head *head) |
92b96797 | 523 | { |
ee16de8c MP |
524 | struct vnt_private *priv = tx_context->priv; |
525 | u32 cts_frame_len = 14; | |
798f0601 | 526 | u16 current_rate = tx_context->tx_rate; |
2eca8dbb | 527 | |
ce7b0db8 | 528 | if (tx_context->fb_option) { |
c921cc8c | 529 | /* Auto Fall back */ |
ee16de8c | 530 | struct vnt_cts_fb *buf = &head->cts_g_fb; |
aed387c7 | 531 | /* Get SignalField,ServiceField,Length */ |
ee16de8c | 532 | vnt_get_phy_field(priv, cts_frame_len, |
d80bf43c | 533 | priv->top_cck_basic_rate, PK_TYPE_11B, &buf->b); |
cca48e3c MP |
534 | buf->duration_ba = |
535 | vnt_get_rtscts_duration_le(tx_context, CTSDUR_BA, | |
536 | tx_context->pkt_type, | |
537 | current_rate); | |
e34f9dbe | 538 | /* Get CTSDuration_ba_f0 */ |
cca48e3c MP |
539 | buf->cts_duration_ba_f0 = |
540 | vnt_get_rtscts_duration_le(tx_context, CTSDUR_BA_F0, | |
541 | tx_context->pkt_type, | |
542 | priv->tx_rate_fb0); | |
e34f9dbe | 543 | /* Get CTSDuration_ba_f1 */ |
cca48e3c MP |
544 | buf->cts_duration_ba_f1 = |
545 | vnt_get_rtscts_duration_le(tx_context, CTSDUR_BA_F1, | |
546 | tx_context->pkt_type, | |
547 | priv->tx_rate_fb1); | |
14840cdd | 548 | /* Get CTS Frame body */ |
ee16de8c MP |
549 | buf->data.duration = buf->duration_ba; |
550 | buf->data.frame_control = | |
d9560ae5 MP |
551 | cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CTS); |
552 | ||
e2382233 | 553 | ether_addr_copy(buf->data.ra, priv->current_net_addr); |
5b852f53 | 554 | |
798f0601 | 555 | return vnt_rxtx_datahead_g_fb(tx_context, &buf->data_head); |
c921cc8c | 556 | } else { |
ee16de8c | 557 | struct vnt_cts *buf = &head->cts_g; |
aed387c7 | 558 | /* Get SignalField,ServiceField,Length */ |
ee16de8c | 559 | vnt_get_phy_field(priv, cts_frame_len, |
d80bf43c | 560 | priv->top_cck_basic_rate, PK_TYPE_11B, &buf->b); |
e34f9dbe | 561 | /* Get CTSDuration_ba */ |
cca48e3c MP |
562 | buf->duration_ba = |
563 | vnt_get_rtscts_duration_le(tx_context, CTSDUR_BA, | |
564 | tx_context->pkt_type, | |
565 | current_rate); | |
14840cdd | 566 | /*Get CTS Frame body*/ |
ee16de8c MP |
567 | buf->data.duration = buf->duration_ba; |
568 | buf->data.frame_control = | |
d9560ae5 MP |
569 | cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CTS); |
570 | ||
e2382233 | 571 | ether_addr_copy(buf->data.ra, priv->current_net_addr); |
78363fd1 | 572 | |
798f0601 | 573 | return vnt_rxtx_datahead_g(tx_context, &buf->data_head); |
de657d59 | 574 | } |
92b96797 FB |
575 | } |
576 | ||
24cdd90f | 577 | static u16 vnt_rxtx_rts(struct vnt_usb_send_context *tx_context, |
798f0601 | 578 | union vnt_tx_head *tx_head, bool need_mic) |
24cdd90f MP |
579 | { |
580 | struct vnt_private *priv = tx_context->priv; | |
581 | struct vnt_rrv_time_rts *buf = &tx_head->tx_rts.rts; | |
4f06c0dc | 582 | union vnt_tx_data_head *head = &tx_head->tx_rts.tx.head; |
0f5567cb | 583 | u32 frame_len = tx_context->frame_len; |
798f0601 | 584 | u16 current_rate = tx_context->tx_rate; |
2eca8dbb | 585 | u8 need_ack = tx_context->need_ack; |
24cdd90f | 586 | |
aadf7d13 | 587 | buf->rts_rrv_time_aa = vnt_get_rtscts_rsvtime_le(priv, 2, |
0f5567cb | 588 | tx_context->pkt_type, frame_len, current_rate); |
aadf7d13 | 589 | buf->rts_rrv_time_ba = vnt_get_rtscts_rsvtime_le(priv, 1, |
0f5567cb | 590 | tx_context->pkt_type, frame_len, current_rate); |
aadf7d13 | 591 | buf->rts_rrv_time_bb = vnt_get_rtscts_rsvtime_le(priv, 0, |
0f5567cb | 592 | tx_context->pkt_type, frame_len, current_rate); |
24cdd90f | 593 | |
e8c9875c | 594 | buf->rrv_time_a = vnt_rxtx_rsvtime_le16(priv, tx_context->pkt_type, |
0f5567cb | 595 | frame_len, current_rate, |
e8c9875c | 596 | need_ack); |
0f5567cb | 597 | buf->rrv_time_b = vnt_rxtx_rsvtime_le16(priv, PK_TYPE_11B, frame_len, |
d80bf43c | 598 | priv->top_cck_basic_rate, need_ack); |
24cdd90f | 599 | |
4f06c0dc MP |
600 | if (need_mic) |
601 | head = &tx_head->tx_rts.tx.mic.head; | |
602 | ||
603 | if (tx_context->fb_option) | |
798f0601 | 604 | return vnt_rxtx_rts_g_fb_head(tx_context, &head->rts_g_fb); |
4f06c0dc | 605 | |
798f0601 | 606 | return vnt_rxtx_rts_g_head(tx_context, &head->rts_g); |
24cdd90f MP |
607 | } |
608 | ||
bf9c0118 | 609 | static u16 vnt_rxtx_cts(struct vnt_usb_send_context *tx_context, |
798f0601 | 610 | union vnt_tx_head *tx_head, bool need_mic) |
bf9c0118 MP |
611 | { |
612 | struct vnt_private *priv = tx_context->priv; | |
613 | struct vnt_rrv_time_cts *buf = &tx_head->tx_cts.cts; | |
b00cb684 | 614 | union vnt_tx_data_head *head = &tx_head->tx_cts.tx.head; |
0f5567cb | 615 | u32 frame_len = tx_context->frame_len; |
798f0601 | 616 | u16 current_rate = tx_context->tx_rate; |
2eca8dbb MP |
617 | u8 need_ack = tx_context->need_ack; |
618 | ||
e8c9875c | 619 | buf->rrv_time_a = vnt_rxtx_rsvtime_le16(priv, tx_context->pkt_type, |
0f5567cb | 620 | frame_len, current_rate, need_ack); |
bf9c0118 | 621 | buf->rrv_time_b = vnt_rxtx_rsvtime_le16(priv, PK_TYPE_11B, |
0f5567cb | 622 | frame_len, priv->top_cck_basic_rate, need_ack); |
bf9c0118 | 623 | |
aadf7d13 | 624 | buf->cts_rrv_time_ba = vnt_get_rtscts_rsvtime_le(priv, 3, |
0f5567cb | 625 | tx_context->pkt_type, frame_len, current_rate); |
bf9c0118 | 626 | |
b00cb684 MP |
627 | if (need_mic) |
628 | head = &tx_head->tx_cts.tx.mic.head; | |
629 | ||
630 | /* Fill CTS */ | |
798f0601 | 631 | return vnt_fill_cts_head(tx_context, head); |
bf9c0118 MP |
632 | } |
633 | ||
3b03fea2 | 634 | static u16 vnt_rxtx_ab(struct vnt_usb_send_context *tx_context, |
798f0601 | 635 | union vnt_tx_head *tx_head, bool need_rts, bool need_mic) |
3b03fea2 MP |
636 | { |
637 | struct vnt_private *priv = tx_context->priv; | |
638 | struct vnt_rrv_time_ab *buf = &tx_head->tx_ab.ab; | |
681acf68 | 639 | union vnt_tx_data_head *head = &tx_head->tx_ab.tx.head; |
0f5567cb | 640 | u32 frame_len = tx_context->frame_len; |
798f0601 | 641 | u16 current_rate = tx_context->tx_rate; |
2eca8dbb | 642 | u8 need_ack = tx_context->need_ack; |
3b03fea2 | 643 | |
e8c9875c | 644 | buf->rrv_time = vnt_rxtx_rsvtime_le16(priv, tx_context->pkt_type, |
0f5567cb | 645 | frame_len, current_rate, need_ack); |
3b03fea2 | 646 | |
681acf68 MP |
647 | if (need_mic) |
648 | head = &tx_head->tx_ab.tx.mic.head; | |
649 | ||
3b03fea2 | 650 | if (need_rts) { |
e8c9875c | 651 | if (tx_context->pkt_type == PK_TYPE_11B) |
aadf7d13 | 652 | buf->rts_rrv_time = vnt_get_rtscts_rsvtime_le(priv, 0, |
0f5567cb | 653 | tx_context->pkt_type, frame_len, current_rate); |
3b03fea2 | 654 | else /* PK_TYPE_11A */ |
aadf7d13 | 655 | buf->rts_rrv_time = vnt_get_rtscts_rsvtime_le(priv, 2, |
0f5567cb | 656 | tx_context->pkt_type, frame_len, current_rate); |
681acf68 | 657 | |
e8c9875c MP |
658 | if (tx_context->fb_option && |
659 | tx_context->pkt_type == PK_TYPE_11A) | |
681acf68 | 660 | return vnt_rxtx_rts_a_fb_head(tx_context, |
798f0601 | 661 | &head->rts_a_fb); |
681acf68 | 662 | |
798f0601 | 663 | return vnt_rxtx_rts_ab_head(tx_context, &head->rts_ab); |
3b03fea2 MP |
664 | } |
665 | ||
e8c9875c | 666 | if (tx_context->pkt_type == PK_TYPE_11A) |
798f0601 | 667 | return vnt_rxtx_datahead_a_fb(tx_context, |
0f5567cb | 668 | &head->data_head_a_fb); |
681acf68 | 669 | |
798f0601 | 670 | return vnt_rxtx_datahead_ab(tx_context, &head->data_head_ab); |
3b03fea2 MP |
671 | } |
672 | ||
9ec7f2d8 | 673 | static u16 vnt_generate_tx_parameter(struct vnt_usb_send_context *tx_context, |
798f0601 | 674 | struct vnt_tx_buffer *tx_buffer, |
0f5567cb | 675 | struct vnt_mic_hdr **mic_hdr, u32 need_mic, |
2eca8dbb | 676 | bool need_rts) |
92b96797 | 677 | { |
92b96797 | 678 | |
e8c9875c MP |
679 | if (tx_context->pkt_type == PK_TYPE_11GB || |
680 | tx_context->pkt_type == PK_TYPE_11GA) { | |
92928f13 | 681 | if (need_rts) { |
4f06c0dc | 682 | if (need_mic) |
92928f13 MP |
683 | *mic_hdr = &tx_buffer-> |
684 | tx_head.tx_rts.tx.mic.hdr; | |
f0e0d505 | 685 | |
4f06c0dc | 686 | return vnt_rxtx_rts(tx_context, &tx_buffer->tx_head, |
798f0601 | 687 | need_mic); |
92928f13 | 688 | } |
da9ef9f4 | 689 | |
681acf68 | 690 | if (need_mic) |
da9ef9f4 | 691 | *mic_hdr = &tx_buffer->tx_head.tx_cts.tx.mic.hdr; |
c12dca09 | 692 | |
798f0601 | 693 | return vnt_rxtx_cts(tx_context, &tx_buffer->tx_head, need_mic); |
92928f13 | 694 | } |
0a0f4b69 | 695 | |
da9ef9f4 MP |
696 | if (need_mic) |
697 | *mic_hdr = &tx_buffer->tx_head.tx_ab.tx.mic.hdr; | |
698 | ||
798f0601 | 699 | return vnt_rxtx_ab(tx_context, &tx_buffer->tx_head, need_rts, need_mic); |
92b96797 | 700 | } |
d38b13aa MP |
701 | |
702 | static void vnt_fill_txkey(struct vnt_usb_send_context *tx_context, | |
703 | u8 *key_buffer, struct ieee80211_key_conf *tx_key, struct sk_buff *skb, | |
704 | u16 payload_len, struct vnt_mic_hdr *mic_hdr) | |
705 | { | |
706 | struct ieee80211_hdr *hdr = tx_context->hdr; | |
707 | struct ieee80211_key_seq seq; | |
708 | u8 *iv = ((u8 *)hdr + ieee80211_get_hdrlen_from_skb(skb)); | |
709 | ||
710 | /* strip header and icv len from payload */ | |
711 | payload_len -= ieee80211_get_hdrlen_from_skb(skb); | |
712 | payload_len -= tx_key->icv_len; | |
713 | ||
714 | switch (tx_key->cipher) { | |
715 | case WLAN_CIPHER_SUITE_WEP40: | |
716 | case WLAN_CIPHER_SUITE_WEP104: | |
717 | memcpy(key_buffer, iv, 3); | |
718 | memcpy(key_buffer + 3, tx_key->key, tx_key->keylen); | |
719 | ||
720 | if (tx_key->keylen == WLAN_KEY_LEN_WEP40) { | |
721 | memcpy(key_buffer + 8, iv, 3); | |
722 | memcpy(key_buffer + 11, | |
723 | tx_key->key, WLAN_KEY_LEN_WEP40); | |
724 | } | |
725 | ||
726 | break; | |
727 | case WLAN_CIPHER_SUITE_TKIP: | |
728 | ieee80211_get_tkip_p2k(tx_key, skb, key_buffer); | |
729 | ||
730 | break; | |
731 | case WLAN_CIPHER_SUITE_CCMP: | |
732 | ||
733 | if (!mic_hdr) | |
734 | return; | |
735 | ||
736 | mic_hdr->id = 0x59; | |
737 | mic_hdr->payload_len = cpu_to_be16(payload_len); | |
48eaa7f5 | 738 | ether_addr_copy(mic_hdr->mic_addr2, hdr->addr2); |
d38b13aa MP |
739 | |
740 | ieee80211_get_key_tx_seq(tx_key, &seq); | |
741 | ||
79f976dc | 742 | memcpy(mic_hdr->ccmp_pn, seq.ccmp.pn, IEEE80211_CCMP_PN_LEN); |
d38b13aa MP |
743 | |
744 | if (ieee80211_has_a4(hdr->frame_control)) | |
745 | mic_hdr->hlen = cpu_to_be16(28); | |
746 | else | |
747 | mic_hdr->hlen = cpu_to_be16(22); | |
748 | ||
749 | memcpy(mic_hdr->addr1, hdr->addr1, ETH_ALEN); | |
750 | memcpy(mic_hdr->addr2, hdr->addr2, ETH_ALEN); | |
751 | memcpy(mic_hdr->addr3, hdr->addr3, ETH_ALEN); | |
752 | ||
753 | mic_hdr->frame_control = cpu_to_le16( | |
754 | le16_to_cpu(hdr->frame_control) & 0xc78f); | |
755 | mic_hdr->seq_ctrl = cpu_to_le16( | |
756 | le16_to_cpu(hdr->seq_ctrl) & 0xf); | |
757 | ||
758 | if (ieee80211_has_a4(hdr->frame_control)) | |
759 | memcpy(mic_hdr->addr4, hdr->addr4, ETH_ALEN); | |
760 | ||
761 | ||
762 | memcpy(key_buffer, tx_key->key, WLAN_KEY_LEN_CCMP); | |
763 | ||
764 | break; | |
765 | default: | |
766 | break; | |
767 | } | |
768 | ||
769 | } | |
770 | ||
771 | int vnt_tx_packet(struct vnt_private *priv, struct sk_buff *skb) | |
772 | { | |
773 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); | |
774 | struct ieee80211_tx_rate *tx_rate = &info->control.rates[0]; | |
775 | struct ieee80211_rate *rate; | |
776 | struct ieee80211_key_conf *tx_key; | |
777 | struct ieee80211_hdr *hdr; | |
778 | struct vnt_mic_hdr *mic_hdr = NULL; | |
779 | struct vnt_tx_buffer *tx_buffer; | |
780 | struct vnt_tx_fifo_head *tx_buffer_head; | |
781 | struct vnt_usb_send_context *tx_context; | |
782 | unsigned long flags; | |
d38b13aa MP |
783 | u16 tx_bytes, tx_header_size, tx_body_size, current_rate, duration_id; |
784 | u8 pkt_type, fb_option = AUTO_FB_NONE; | |
2eca8dbb | 785 | bool need_rts = false, is_pspoll = false; |
d38b13aa MP |
786 | bool need_mic = false; |
787 | ||
788 | hdr = (struct ieee80211_hdr *)(skb->data); | |
789 | ||
790 | rate = ieee80211_get_tx_rate(priv->hw, info); | |
791 | ||
792 | current_rate = rate->hw_value; | |
8b84c1da | 793 | if (priv->current_rate != current_rate && |
5091d963 | 794 | !(priv->hw->conf.flags & IEEE80211_CONF_OFFCHANNEL)) { |
8b84c1da | 795 | priv->current_rate = current_rate; |
57981a65 | 796 | vnt_schedule_command(priv, WLAN_CMD_SETPOWER); |
d38b13aa MP |
797 | } |
798 | ||
799 | if (current_rate > RATE_11M) | |
e12471db | 800 | pkt_type = priv->packet_type; |
d38b13aa MP |
801 | else |
802 | pkt_type = PK_TYPE_11B; | |
803 | ||
804 | spin_lock_irqsave(&priv->lock, flags); | |
805 | ||
a032b16c | 806 | tx_context = vnt_get_free_context(priv); |
d38b13aa MP |
807 | if (!tx_context) { |
808 | dev_dbg(&priv->usb->dev, "%s No free context\n", __func__); | |
809 | spin_unlock_irqrestore(&priv->lock, flags); | |
810 | return -ENOMEM; | |
811 | } | |
812 | ||
813 | tx_context->skb = skb; | |
e8c9875c | 814 | tx_context->pkt_type = pkt_type; |
2eca8dbb | 815 | tx_context->need_ack = false; |
0f5567cb | 816 | tx_context->frame_len = skb->len + 4; |
798f0601 | 817 | tx_context->tx_rate = current_rate; |
d38b13aa MP |
818 | |
819 | spin_unlock_irqrestore(&priv->lock, flags); | |
820 | ||
821 | tx_buffer = (struct vnt_tx_buffer *)tx_context->data; | |
822 | tx_buffer_head = &tx_buffer->fifo_head; | |
823 | tx_body_size = skb->len; | |
824 | ||
d38b13aa MP |
825 | /*Set fifo controls */ |
826 | if (pkt_type == PK_TYPE_11A) | |
f0ff3fde | 827 | tx_buffer_head->fifo_ctl = 0; |
d38b13aa | 828 | else if (pkt_type == PK_TYPE_11B) |
47e08894 | 829 | tx_buffer_head->fifo_ctl = cpu_to_le16(FIFOCTL_11B); |
d38b13aa | 830 | else if (pkt_type == PK_TYPE_11GB) |
47e08894 | 831 | tx_buffer_head->fifo_ctl = cpu_to_le16(FIFOCTL_11GB); |
d38b13aa | 832 | else if (pkt_type == PK_TYPE_11GA) |
47e08894 | 833 | tx_buffer_head->fifo_ctl = cpu_to_le16(FIFOCTL_11GA); |
d38b13aa MP |
834 | |
835 | if (!ieee80211_is_data(hdr->frame_control)) { | |
47e08894 MP |
836 | tx_buffer_head->fifo_ctl |= cpu_to_le16(FIFOCTL_GENINT | |
837 | FIFOCTL_ISDMA0); | |
838 | tx_buffer_head->fifo_ctl |= cpu_to_le16(FIFOCTL_TMOEN); | |
d38b13aa MP |
839 | |
840 | tx_buffer_head->time_stamp = | |
841 | cpu_to_le16(DEFAULT_MGN_LIFETIME_RES_64us); | |
842 | } else { | |
843 | tx_buffer_head->time_stamp = | |
844 | cpu_to_le16(DEFAULT_MSDU_LIFETIME_RES_64us); | |
845 | } | |
846 | ||
847 | if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) { | |
47e08894 | 848 | tx_buffer_head->fifo_ctl |= cpu_to_le16(FIFOCTL_NEEDACK); |
2eca8dbb | 849 | tx_context->need_ack = true; |
d38b13aa MP |
850 | } |
851 | ||
852 | if (ieee80211_has_retry(hdr->frame_control)) | |
47e08894 | 853 | tx_buffer_head->fifo_ctl |= cpu_to_le16(FIFOCTL_LRETRY); |
d38b13aa MP |
854 | |
855 | if (tx_rate->flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE) | |
98e93fe5 | 856 | priv->preamble_type = PREAMBLE_SHORT; |
d38b13aa | 857 | else |
98e93fe5 | 858 | priv->preamble_type = PREAMBLE_LONG; |
d38b13aa MP |
859 | |
860 | if (tx_rate->flags & IEEE80211_TX_RC_USE_RTS_CTS) { | |
861 | need_rts = true; | |
47e08894 | 862 | tx_buffer_head->fifo_ctl |= cpu_to_le16(FIFOCTL_RTS); |
d38b13aa MP |
863 | } |
864 | ||
865 | if (ieee80211_has_a4(hdr->frame_control)) | |
47e08894 | 866 | tx_buffer_head->fifo_ctl |= cpu_to_le16(FIFOCTL_LHEAD); |
d38b13aa MP |
867 | |
868 | if (info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER) | |
869 | is_pspoll = true; | |
870 | ||
5deb1cfa MP |
871 | tx_buffer_head->frag_ctl = |
872 | cpu_to_le16(ieee80211_get_hdrlen_from_skb(skb) << 10); | |
d38b13aa MP |
873 | |
874 | if (info->control.hw_key) { | |
875 | tx_key = info->control.hw_key; | |
876 | switch (info->control.hw_key->cipher) { | |
877 | case WLAN_CIPHER_SUITE_WEP40: | |
878 | case WLAN_CIPHER_SUITE_WEP104: | |
5deb1cfa | 879 | tx_buffer_head->frag_ctl |= cpu_to_le16(FRAGCTL_LEGACY); |
d38b13aa MP |
880 | break; |
881 | case WLAN_CIPHER_SUITE_TKIP: | |
5deb1cfa | 882 | tx_buffer_head->frag_ctl |= cpu_to_le16(FRAGCTL_TKIP); |
d38b13aa MP |
883 | break; |
884 | case WLAN_CIPHER_SUITE_CCMP: | |
5deb1cfa | 885 | tx_buffer_head->frag_ctl |= cpu_to_le16(FRAGCTL_AES); |
d38b13aa MP |
886 | need_mic = true; |
887 | default: | |
888 | break; | |
889 | } | |
0f5567cb | 890 | tx_context->frame_len += tx_key->icv_len; |
d38b13aa MP |
891 | } |
892 | ||
cb8ee9de MP |
893 | tx_buffer_head->current_rate = cpu_to_le16(current_rate); |
894 | ||
d38b13aa MP |
895 | /* legacy rates TODO use ieee80211_tx_rate */ |
896 | if (current_rate >= RATE_18M && ieee80211_is_data(hdr->frame_control)) { | |
a6177aef | 897 | if (priv->auto_fb_ctrl == AUTO_FB_0) { |
47e08894 MP |
898 | tx_buffer_head->fifo_ctl |= |
899 | cpu_to_le16(FIFOCTL_AUTO_FB_0); | |
d38b13aa MP |
900 | |
901 | priv->tx_rate_fb0 = | |
e3f31874 | 902 | vnt_fb_opt0[FB_RATE0][current_rate - RATE_18M]; |
d38b13aa | 903 | priv->tx_rate_fb1 = |
e3f31874 | 904 | vnt_fb_opt0[FB_RATE1][current_rate - RATE_18M]; |
d38b13aa MP |
905 | |
906 | fb_option = AUTO_FB_0; | |
a6177aef | 907 | } else if (priv->auto_fb_ctrl == AUTO_FB_1) { |
47e08894 MP |
908 | tx_buffer_head->fifo_ctl |= |
909 | cpu_to_le16(FIFOCTL_AUTO_FB_1); | |
d38b13aa MP |
910 | |
911 | priv->tx_rate_fb0 = | |
2331ba42 | 912 | vnt_fb_opt1[FB_RATE0][current_rate - RATE_18M]; |
d38b13aa | 913 | priv->tx_rate_fb1 = |
2331ba42 | 914 | vnt_fb_opt1[FB_RATE1][current_rate - RATE_18M]; |
d38b13aa MP |
915 | |
916 | fb_option = AUTO_FB_1; | |
917 | } | |
918 | } | |
919 | ||
71d764ae MP |
920 | tx_context->fb_option = fb_option; |
921 | ||
798f0601 MP |
922 | duration_id = vnt_generate_tx_parameter(tx_context, tx_buffer, &mic_hdr, |
923 | need_mic, need_rts); | |
d38b13aa MP |
924 | |
925 | tx_header_size = tx_context->tx_hdr_size; | |
926 | if (!tx_header_size) { | |
927 | tx_context->in_use = false; | |
928 | return -ENOMEM; | |
929 | } | |
930 | ||
5deb1cfa | 931 | tx_buffer_head->frag_ctl |= cpu_to_le16(FRAGCTL_NONFRAG); |
d38b13aa MP |
932 | |
933 | tx_bytes = tx_header_size + tx_body_size; | |
934 | ||
935 | memcpy(tx_context->hdr, skb->data, tx_body_size); | |
936 | ||
937 | hdr->duration_id = cpu_to_le16(duration_id); | |
938 | ||
939 | if (info->control.hw_key) { | |
940 | tx_key = info->control.hw_key; | |
941 | if (tx_key->keylen > 0) | |
942 | vnt_fill_txkey(tx_context, tx_buffer_head->tx_key, | |
943 | tx_key, skb, tx_body_size, mic_hdr); | |
944 | } | |
945 | ||
1b2bc0aa | 946 | priv->seq_counter = (le16_to_cpu(hdr->seq_ctrl) & |
d38b13aa MP |
947 | IEEE80211_SCTL_SEQ) >> 4; |
948 | ||
949 | tx_buffer->tx_byte_count = cpu_to_le16(tx_bytes); | |
d0335a03 | 950 | tx_buffer->pkt_no = tx_context->pkt_no; |
c8a3a4c0 | 951 | tx_buffer->type = 0x00; |
d38b13aa MP |
952 | |
953 | tx_bytes += 4; | |
954 | ||
955 | tx_context->type = CONTEXT_DATA_PACKET; | |
956 | tx_context->buf_len = tx_bytes; | |
957 | ||
958 | spin_lock_irqsave(&priv->lock, flags); | |
959 | ||
476e7d97 | 960 | if (vnt_tx_context(priv, tx_context) != STATUS_PENDING) { |
d38b13aa MP |
961 | spin_unlock_irqrestore(&priv->lock, flags); |
962 | return -EIO; | |
963 | } | |
964 | ||
965 | spin_unlock_irqrestore(&priv->lock, flags); | |
966 | ||
967 | return 0; | |
968 | } | |
969 | ||
970 | static int vnt_beacon_xmit(struct vnt_private *priv, | |
971 | struct sk_buff *skb) | |
972 | { | |
973 | struct vnt_beacon_buffer *beacon_buffer; | |
974 | struct vnt_tx_short_buf_head *short_head; | |
975 | struct ieee80211_tx_info *info; | |
976 | struct vnt_usb_send_context *context; | |
977 | struct ieee80211_mgmt *mgmt_hdr; | |
978 | unsigned long flags; | |
979 | u32 frame_size = skb->len + 4; | |
980 | u16 current_rate, count; | |
981 | ||
982 | spin_lock_irqsave(&priv->lock, flags); | |
983 | ||
a032b16c | 984 | context = vnt_get_free_context(priv); |
d38b13aa MP |
985 | if (!context) { |
986 | dev_dbg(&priv->usb->dev, "%s No free context!\n", __func__); | |
987 | spin_unlock_irqrestore(&priv->lock, flags); | |
988 | return -ENOMEM; | |
989 | } | |
990 | ||
991 | context->skb = skb; | |
992 | ||
993 | spin_unlock_irqrestore(&priv->lock, flags); | |
994 | ||
995 | beacon_buffer = (struct vnt_beacon_buffer *)&context->data[0]; | |
996 | short_head = &beacon_buffer->short_head; | |
997 | ||
65df77e2 | 998 | if (priv->bb_type == BB_TYPE_11A) { |
d38b13aa MP |
999 | current_rate = RATE_6M; |
1000 | ||
1001 | /* Get SignalField,ServiceField,Length */ | |
1002 | vnt_get_phy_field(priv, frame_size, current_rate, | |
1003 | PK_TYPE_11A, &short_head->ab); | |
1004 | ||
1005 | /* Get Duration and TimeStampOff */ | |
435ae3be | 1006 | short_head->duration = vnt_get_duration_le(priv, |
d38b13aa MP |
1007 | PK_TYPE_11A, false); |
1008 | short_head->time_stamp_off = | |
1009 | vnt_time_stamp_off(priv, current_rate); | |
1010 | } else { | |
1011 | current_rate = RATE_1M; | |
14fb6ce8 | 1012 | short_head->fifo_ctl |= cpu_to_le16(FIFOCTL_11B); |
d38b13aa MP |
1013 | |
1014 | /* Get SignalField,ServiceField,Length */ | |
1015 | vnt_get_phy_field(priv, frame_size, current_rate, | |
1016 | PK_TYPE_11B, &short_head->ab); | |
1017 | ||
1018 | /* Get Duration and TimeStampOff */ | |
435ae3be | 1019 | short_head->duration = vnt_get_duration_le(priv, |
d38b13aa MP |
1020 | PK_TYPE_11B, false); |
1021 | short_head->time_stamp_off = | |
1022 | vnt_time_stamp_off(priv, current_rate); | |
1023 | } | |
1024 | ||
1025 | /* Generate Beacon Header */ | |
1026 | mgmt_hdr = &beacon_buffer->mgmt_hdr; | |
1027 | memcpy(mgmt_hdr, skb->data, skb->len); | |
1028 | ||
1029 | /* time stamp always 0 */ | |
1030 | mgmt_hdr->u.beacon.timestamp = 0; | |
1031 | ||
1032 | info = IEEE80211_SKB_CB(skb); | |
1033 | if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) { | |
1034 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)mgmt_hdr; | |
76be25ba | 1035 | |
d38b13aa | 1036 | hdr->duration_id = 0; |
1b2bc0aa | 1037 | hdr->seq_ctrl = cpu_to_le16(priv->seq_counter << 4); |
d38b13aa MP |
1038 | } |
1039 | ||
1b2bc0aa MP |
1040 | priv->seq_counter++; |
1041 | if (priv->seq_counter > 0x0fff) | |
1042 | priv->seq_counter = 0; | |
d38b13aa MP |
1043 | |
1044 | count = sizeof(struct vnt_tx_short_buf_head) + skb->len; | |
1045 | ||
1046 | beacon_buffer->tx_byte_count = cpu_to_le16(count); | |
af90ab39 | 1047 | beacon_buffer->pkt_no = context->pkt_no; |
1e00b449 | 1048 | beacon_buffer->type = 0x01; |
d38b13aa MP |
1049 | |
1050 | context->type = CONTEXT_BEACON_PACKET; | |
1051 | context->buf_len = count + 4; /* USB header */ | |
1052 | ||
1053 | spin_lock_irqsave(&priv->lock, flags); | |
1054 | ||
476e7d97 | 1055 | if (vnt_tx_context(priv, context) != STATUS_PENDING) |
d38b13aa MP |
1056 | ieee80211_free_txskb(priv->hw, context->skb); |
1057 | ||
1058 | spin_unlock_irqrestore(&priv->lock, flags); | |
1059 | ||
1060 | return 0; | |
1061 | } | |
1062 | ||
1063 | int vnt_beacon_make(struct vnt_private *priv, struct ieee80211_vif *vif) | |
1064 | { | |
1065 | struct sk_buff *beacon; | |
1066 | ||
1067 | beacon = ieee80211_beacon_get(priv->hw, vif); | |
1068 | if (!beacon) | |
1069 | return -ENOMEM; | |
1070 | ||
1071 | if (vnt_beacon_xmit(priv, beacon)) { | |
1072 | ieee80211_free_txskb(priv->hw, beacon); | |
1073 | return -ENODEV; | |
1074 | } | |
1075 | ||
1076 | return 0; | |
1077 | } | |
1078 | ||
1079 | int vnt_beacon_enable(struct vnt_private *priv, struct ieee80211_vif *vif, | |
1080 | struct ieee80211_bss_conf *conf) | |
1081 | { | |
d38b13aa MP |
1082 | vnt_mac_reg_bits_off(priv, MAC_REG_TCR, TCR_AUTOBCNTX); |
1083 | ||
1084 | vnt_mac_reg_bits_off(priv, MAC_REG_TFTCTL, TFTCTL_TSFCNTREN); | |
1085 | ||
1086 | vnt_mac_set_beacon_interval(priv, conf->beacon_int); | |
1087 | ||
1088 | vnt_clear_current_tsf(priv); | |
1089 | ||
1090 | vnt_mac_reg_bits_on(priv, MAC_REG_TFTCTL, TFTCTL_TSFCNTREN); | |
1091 | ||
1092 | vnt_reset_next_tbtt(priv, conf->beacon_int); | |
1093 | ||
eab4e78d | 1094 | return vnt_beacon_make(priv, vif); |
d38b13aa | 1095 | } |