diff options
Diffstat (limited to 'net/mac80211/wpa.c')
| -rw-r--r-- | net/mac80211/wpa.c | 32 |
1 files changed, 10 insertions, 22 deletions
diff --git a/net/mac80211/wpa.c b/net/mac80211/wpa.c index 6db649480e8f..7aa63caf8d50 100644 --- a/net/mac80211/wpa.c +++ b/net/mac80211/wpa.c @@ -49,8 +49,7 @@ ieee80211_tx_h_michael_mic_add(struct ieee80211_tx_data *tx) !(tx->flags & IEEE80211_TX_FRAGMENTED) && !(tx->key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_MMIC) && !wpa_test) { - /* hwaccel - with no need for preallocated room for Michael MIC - */ + /* hwaccel - with no need for preallocated room for MMIC */ return TX_CONTINUE; } @@ -67,8 +66,6 @@ ieee80211_tx_h_michael_mic_add(struct ieee80211_tx_data *tx) #else authenticator = 1; #endif - /* At this point we know we're using ALG_TKIP. To get the MIC key - * we now will rely on the offset from the ieee80211_key_conf::key */ key_offset = authenticator ? NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY : NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY; @@ -90,11 +87,8 @@ ieee80211_rx_h_michael_mic_verify(struct ieee80211_rx_data *rx) u8 mic[MICHAEL_MIC_LEN]; struct sk_buff *skb = rx->skb; int authenticator = 1, wpa_test = 0; - DECLARE_MAC_BUF(mac); - /* - * No way to verify the MIC if the hardware stripped it - */ + /* No way to verify the MIC if the hardware stripped it */ if (rx->status->flag & RX_FLAG_MMIC_STRIPPED) return RX_CONTINUE; @@ -116,8 +110,6 @@ ieee80211_rx_h_michael_mic_verify(struct ieee80211_rx_data *rx) #else authenticator = 1; #endif - /* At this point we know we're using ALG_TKIP. To get the MIC key - * we now will rely on the offset from the ieee80211_key_conf::key */ key_offset = authenticator ? NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY : NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY; @@ -202,6 +194,7 @@ ieee80211_tx_result ieee80211_crypto_tkip_encrypt(struct ieee80211_tx_data *tx) { struct sk_buff *skb = tx->skb; + int i; ieee80211_tx_set_protected(tx); @@ -209,9 +202,8 @@ ieee80211_crypto_tkip_encrypt(struct ieee80211_tx_data *tx) return TX_DROP; if (tx->extra_frag) { - int i; for (i = 0; i < tx->num_extra_frag; i++) { - if (tkip_encrypt_skb(tx, tx->extra_frag[i]) < 0) + if (tkip_encrypt_skb(tx, tx->extra_frag[i])) return TX_DROP; } } @@ -227,7 +219,6 @@ ieee80211_crypto_tkip_decrypt(struct ieee80211_rx_data *rx) int hdrlen, res, hwaccel = 0, wpa_test = 0; struct ieee80211_key *key = rx->key; struct sk_buff *skb = rx->skb; - DECLARE_MAC_BUF(mac); hdrlen = ieee80211_hdrlen(hdr->frame_control); @@ -350,7 +341,7 @@ static inline void ccmp_pn2hdr(u8 *hdr, u8 *pn, int key_id) } -static inline int ccmp_hdr2pn(u8 *pn, u8 *hdr) +static inline void ccmp_hdr2pn(u8 *pn, u8 *hdr) { pn[0] = hdr[7]; pn[1] = hdr[6]; @@ -358,7 +349,6 @@ static inline int ccmp_hdr2pn(u8 *pn, u8 *hdr) pn[3] = hdr[4]; pn[4] = hdr[1]; pn[5] = hdr[0]; - return (hdr[3] >> 6) & 0x03; } @@ -373,7 +363,7 @@ static int ccmp_encrypt_skb(struct ieee80211_tx_data *tx, struct sk_buff *skb) if ((tx->key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE) && !(tx->key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) { - /* hwaccel - with no need for preallocated room for CCMP " + /* hwaccel - with no need for preallocated room for CCMP * header or MIC fields */ info->control.hw_key = &tx->key->conf; return 0; @@ -426,6 +416,7 @@ ieee80211_tx_result ieee80211_crypto_ccmp_encrypt(struct ieee80211_tx_data *tx) { struct sk_buff *skb = tx->skb; + int i; ieee80211_tx_set_protected(tx); @@ -433,9 +424,8 @@ ieee80211_crypto_ccmp_encrypt(struct ieee80211_tx_data *tx) return TX_DROP; if (tx->extra_frag) { - int i; for (i = 0; i < tx->num_extra_frag; i++) { - if (ccmp_encrypt_skb(tx, tx->extra_frag[i]) < 0) + if (ccmp_encrypt_skb(tx, tx->extra_frag[i])) return TX_DROP; } } @@ -453,7 +443,6 @@ ieee80211_crypto_ccmp_decrypt(struct ieee80211_rx_data *rx) struct sk_buff *skb = rx->skb; u8 pn[CCMP_PN_LEN]; int data_len; - DECLARE_MAC_BUF(mac); hdrlen = ieee80211_hdrlen(hdr->frame_control); @@ -468,7 +457,7 @@ ieee80211_crypto_ccmp_decrypt(struct ieee80211_rx_data *rx) (rx->status->flag & RX_FLAG_IV_STRIPPED)) return RX_CONTINUE; - (void) ccmp_hdr2pn(pn, skb->data + hdrlen); + ccmp_hdr2pn(pn, skb->data + hdrlen); if (memcmp(pn, key->u.ccmp.rx_pn[rx->queue], CCMP_PN_LEN) <= 0) { key->u.ccmp.replays++; @@ -483,9 +472,8 @@ ieee80211_crypto_ccmp_decrypt(struct ieee80211_rx_data *rx) key->u.ccmp.tfm, key->u.ccmp.rx_crypto_buf, skb->data + hdrlen + CCMP_HDR_LEN, data_len, skb->data + skb->len - CCMP_MIC_LEN, - skb->data + hdrlen + CCMP_HDR_LEN)) { + skb->data + hdrlen + CCMP_HDR_LEN)) return RX_DROP_UNUSABLE; - } } memcpy(key->u.ccmp.rx_pn[rx->queue], pn, CCMP_PN_LEN); |