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Diffstat (limited to 'net/mac80211/wpa.c')
-rw-r--r--net/mac80211/wpa.c65
1 files changed, 31 insertions, 34 deletions
diff --git a/net/mac80211/wpa.c b/net/mac80211/wpa.c
index d7304490d2ec..d6635f6e5618 100644
--- a/net/mac80211/wpa.c
+++ b/net/mac80211/wpa.c
@@ -183,15 +183,25 @@ ieee80211_rx_h_michael_mic_verify(struct ieee80211_rx_data *rx)
183} 183}
184 184
185 185
186static int tkip_encrypt_skb(struct ieee80211_tx_data *tx, 186static int tkip_encrypt_skb(struct ieee80211_tx_data *tx, struct sk_buff *skb)
187 struct sk_buff *skb, int test)
188{ 187{
189 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; 188 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
190 struct ieee80211_key *key = tx->key; 189 struct ieee80211_key *key = tx->key;
190 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
191 int hdrlen, len, tailneed; 191 int hdrlen, len, tailneed;
192 u16 fc; 192 u16 fc;
193 u8 *pos; 193 u8 *pos;
194 194
195 info->control.icv_len = TKIP_ICV_LEN;
196 info->control.iv_len = TKIP_IV_LEN;
197
198 if ((tx->key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE) &&
199 !(tx->key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
200 /* hwaccel - with no need for preallocated room for IV/ICV */
201 info->control.hw_key = &tx->key->conf;
202 return TX_CONTINUE;
203 }
204
195 fc = le16_to_cpu(hdr->frame_control); 205 fc = le16_to_cpu(hdr->frame_control);
196 hdrlen = ieee80211_get_hdrlen(fc); 206 hdrlen = ieee80211_get_hdrlen(fc);
197 len = skb->len - hdrlen; 207 len = skb->len - hdrlen;
@@ -228,7 +238,7 @@ static int tkip_encrypt_skb(struct ieee80211_tx_data *tx,
228 0x7f), 238 0x7f),
229 (u8) key->u.tkip.tx.iv16); 239 (u8) key->u.tkip.tx.iv16);
230 240
231 tx->control->hw_key = &tx->key->conf; 241 info->control.hw_key = &tx->key->conf;
232 return 0; 242 return 0;
233 } 243 }
234 244
@@ -246,28 +256,16 @@ ieee80211_tx_result
246ieee80211_crypto_tkip_encrypt(struct ieee80211_tx_data *tx) 256ieee80211_crypto_tkip_encrypt(struct ieee80211_tx_data *tx)
247{ 257{
248 struct sk_buff *skb = tx->skb; 258 struct sk_buff *skb = tx->skb;
249 int wpa_test = 0, test = 0;
250 259
251 tx->control->icv_len = TKIP_ICV_LEN;
252 tx->control->iv_len = TKIP_IV_LEN;
253 ieee80211_tx_set_protected(tx); 260 ieee80211_tx_set_protected(tx);
254 261
255 if ((tx->key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE) && 262 if (tkip_encrypt_skb(tx, skb) < 0)
256 !(tx->key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV) &&
257 !wpa_test) {
258 /* hwaccel - with no need for preallocated room for IV/ICV */
259 tx->control->hw_key = &tx->key->conf;
260 return TX_CONTINUE;
261 }
262
263 if (tkip_encrypt_skb(tx, skb, test) < 0)
264 return TX_DROP; 263 return TX_DROP;
265 264
266 if (tx->extra_frag) { 265 if (tx->extra_frag) {
267 int i; 266 int i;
268 for (i = 0; i < tx->num_extra_frag; i++) { 267 for (i = 0; i < tx->num_extra_frag; i++) {
269 if (tkip_encrypt_skb(tx, tx->extra_frag[i], test) 268 if (tkip_encrypt_skb(tx, tx->extra_frag[i]) < 0)
270 < 0)
271 return TX_DROP; 269 return TX_DROP;
272 } 270 }
273 } 271 }
@@ -429,16 +427,27 @@ static inline int ccmp_hdr2pn(u8 *pn, u8 *hdr)
429} 427}
430 428
431 429
432static int ccmp_encrypt_skb(struct ieee80211_tx_data *tx, 430static int ccmp_encrypt_skb(struct ieee80211_tx_data *tx, struct sk_buff *skb)
433 struct sk_buff *skb, int test)
434{ 431{
435 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; 432 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
436 struct ieee80211_key *key = tx->key; 433 struct ieee80211_key *key = tx->key;
434 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
437 int hdrlen, len, tailneed; 435 int hdrlen, len, tailneed;
438 u16 fc; 436 u16 fc;
439 u8 *pos, *pn, *b_0, *aad, *scratch; 437 u8 *pos, *pn, *b_0, *aad, *scratch;
440 int i; 438 int i;
441 439
440 info->control.icv_len = CCMP_MIC_LEN;
441 info->control.iv_len = CCMP_HDR_LEN;
442
443 if ((tx->key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE) &&
444 !(tx->key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
445 /* hwaccel - with no need for preallocated room for CCMP "
446 * header or MIC fields */
447 info->control.hw_key = &tx->key->conf;
448 return TX_CONTINUE;
449 }
450
442 scratch = key->u.ccmp.tx_crypto_buf; 451 scratch = key->u.ccmp.tx_crypto_buf;
443 b_0 = scratch + 3 * AES_BLOCK_LEN; 452 b_0 = scratch + 3 * AES_BLOCK_LEN;
444 aad = scratch + 4 * AES_BLOCK_LEN; 453 aad = scratch + 4 * AES_BLOCK_LEN;
@@ -478,7 +487,7 @@ static int ccmp_encrypt_skb(struct ieee80211_tx_data *tx,
478 487
479 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE) { 488 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE) {
480 /* hwaccel - with preallocated room for CCMP header */ 489 /* hwaccel - with preallocated room for CCMP header */
481 tx->control->hw_key = &tx->key->conf; 490 info->control.hw_key = &tx->key->conf;
482 return 0; 491 return 0;
483 } 492 }
484 493
@@ -495,28 +504,16 @@ ieee80211_tx_result
495ieee80211_crypto_ccmp_encrypt(struct ieee80211_tx_data *tx) 504ieee80211_crypto_ccmp_encrypt(struct ieee80211_tx_data *tx)
496{ 505{
497 struct sk_buff *skb = tx->skb; 506 struct sk_buff *skb = tx->skb;
498 int test = 0;
499 507
500 tx->control->icv_len = CCMP_MIC_LEN;
501 tx->control->iv_len = CCMP_HDR_LEN;
502 ieee80211_tx_set_protected(tx); 508 ieee80211_tx_set_protected(tx);
503 509
504 if ((tx->key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE) && 510 if (ccmp_encrypt_skb(tx, skb) < 0)
505 !(tx->key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
506 /* hwaccel - with no need for preallocated room for CCMP "
507 * header or MIC fields */
508 tx->control->hw_key = &tx->key->conf;
509 return TX_CONTINUE;
510 }
511
512 if (ccmp_encrypt_skb(tx, skb, test) < 0)
513 return TX_DROP; 511 return TX_DROP;
514 512
515 if (tx->extra_frag) { 513 if (tx->extra_frag) {
516 int i; 514 int i;
517 for (i = 0; i < tx->num_extra_frag; i++) { 515 for (i = 0; i < tx->num_extra_frag; i++) {
518 if (ccmp_encrypt_skb(tx, tx->extra_frag[i], test) 516 if (ccmp_encrypt_skb(tx, tx->extra_frag[i]) < 0)
519 < 0)
520 return TX_DROP; 517 return TX_DROP;
521 } 518 }
522 } 519 }