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-rw-r--r--net/mac80211/rx.c96
1 files changed, 48 insertions, 48 deletions
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index 7cd185e9dde4..6973d5c8e9e0 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -512,6 +512,53 @@ ieee80211_rx_h_load_key(struct ieee80211_txrx_data *rx)
512 return TXRX_CONTINUE; 512 return TXRX_CONTINUE;
513} 513}
514 514
515static ieee80211_txrx_result
516ieee80211_rx_h_wep_weak_iv_detection(struct ieee80211_txrx_data *rx)
517{
518 if (!rx->sta || !(rx->fc & IEEE80211_FCTL_PROTECTED) ||
519 (rx->fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA ||
520 !rx->key || rx->key->conf.alg != ALG_WEP ||
521 !(rx->flags & IEEE80211_TXRXD_RXRA_MATCH))
522 return TXRX_CONTINUE;
523
524 /* Check for weak IVs, if hwaccel did not remove IV from the frame */
525 if (!(rx->u.rx.status->flag & RX_FLAG_IV_STRIPPED) ||
526 !(rx->u.rx.status->flag & RX_FLAG_DECRYPTED))
527 if (ieee80211_wep_is_weak_iv(rx->skb, rx->key))
528 rx->sta->wep_weak_iv_count++;
529
530 return TXRX_CONTINUE;
531}
532
533static ieee80211_txrx_result
534ieee80211_rx_h_decrypt(struct ieee80211_txrx_data *rx)
535{
536 if (!(rx->fc & IEEE80211_FCTL_PROTECTED))
537 return TXRX_CONTINUE;
538
539 if (!rx->key) {
540 if (net_ratelimit())
541 printk(KERN_DEBUG "%s: RX protected frame,"
542 " but have no key\n", rx->dev->name);
543 return TXRX_DROP;
544 }
545
546 switch (rx->key->conf.alg) {
547 case ALG_WEP:
548 return ieee80211_crypto_wep_decrypt(rx);
549 case ALG_TKIP:
550 return ieee80211_crypto_tkip_decrypt(rx);
551 case ALG_CCMP:
552 return ieee80211_crypto_ccmp_decrypt(rx);
553 case ALG_NONE:
554 return TXRX_CONTINUE;
555 }
556
557 /* not reached */
558 WARN_ON(1);
559 return TXRX_DROP;
560}
561
515static void ap_sta_ps_start(struct net_device *dev, struct sta_info *sta) 562static void ap_sta_ps_start(struct net_device *dev, struct sta_info *sta)
516{ 563{
517 struct ieee80211_sub_if_data *sdata; 564 struct ieee80211_sub_if_data *sdata;
@@ -637,53 +684,6 @@ ieee80211_rx_h_sta_process(struct ieee80211_txrx_data *rx)
637 return TXRX_CONTINUE; 684 return TXRX_CONTINUE;
638} /* ieee80211_rx_h_sta_process */ 685} /* ieee80211_rx_h_sta_process */
639 686
640static ieee80211_txrx_result
641ieee80211_rx_h_wep_weak_iv_detection(struct ieee80211_txrx_data *rx)
642{
643 if (!rx->sta || !(rx->fc & IEEE80211_FCTL_PROTECTED) ||
644 (rx->fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA ||
645 !rx->key || rx->key->conf.alg != ALG_WEP ||
646 !(rx->flags & IEEE80211_TXRXD_RXRA_MATCH))
647 return TXRX_CONTINUE;
648
649 /* Check for weak IVs, if hwaccel did not remove IV from the frame */
650 if (!(rx->u.rx.status->flag & RX_FLAG_IV_STRIPPED) ||
651 !(rx->u.rx.status->flag & RX_FLAG_DECRYPTED))
652 if (ieee80211_wep_is_weak_iv(rx->skb, rx->key))
653 rx->sta->wep_weak_iv_count++;
654
655 return TXRX_CONTINUE;
656}
657
658static ieee80211_txrx_result
659ieee80211_rx_h_decrypt(struct ieee80211_txrx_data *rx)
660{
661 if (!(rx->fc & IEEE80211_FCTL_PROTECTED))
662 return TXRX_CONTINUE;
663
664 if (!rx->key) {
665 if (net_ratelimit())
666 printk(KERN_DEBUG "%s: RX protected frame,"
667 " but have no key\n", rx->dev->name);
668 return TXRX_DROP;
669 }
670
671 switch (rx->key->conf.alg) {
672 case ALG_WEP:
673 return ieee80211_crypto_wep_decrypt(rx);
674 case ALG_TKIP:
675 return ieee80211_crypto_tkip_decrypt(rx);
676 case ALG_CCMP:
677 return ieee80211_crypto_ccmp_decrypt(rx);
678 case ALG_NONE:
679 return TXRX_CONTINUE;
680 }
681
682 /* not reached */
683 WARN_ON(1);
684 return TXRX_DROP;
685}
686
687static inline struct ieee80211_fragment_entry * 687static inline struct ieee80211_fragment_entry *
688ieee80211_reassemble_add(struct ieee80211_sub_if_data *sdata, 688ieee80211_reassemble_add(struct ieee80211_sub_if_data *sdata,
689 unsigned int frag, unsigned int seq, int rx_queue, 689 unsigned int frag, unsigned int seq, int rx_queue,
@@ -1349,9 +1349,9 @@ ieee80211_rx_handler ieee80211_rx_handlers[] =
1349 ieee80211_rx_h_passive_scan, 1349 ieee80211_rx_h_passive_scan,
1350 ieee80211_rx_h_check, 1350 ieee80211_rx_h_check,
1351 ieee80211_rx_h_load_key, 1351 ieee80211_rx_h_load_key,
1352 ieee80211_rx_h_sta_process,
1353 ieee80211_rx_h_wep_weak_iv_detection, 1352 ieee80211_rx_h_wep_weak_iv_detection,
1354 ieee80211_rx_h_decrypt, 1353 ieee80211_rx_h_decrypt,
1354 ieee80211_rx_h_sta_process,
1355 ieee80211_rx_h_defragment, 1355 ieee80211_rx_h_defragment,
1356 ieee80211_rx_h_ps_poll, 1356 ieee80211_rx_h_ps_poll,
1357 ieee80211_rx_h_michael_mic_verify, 1357 ieee80211_rx_h_michael_mic_verify,