diff options
author | Felix Fietkau <nbd@openwrt.org> | 2011-07-08 05:20:03 +0000 |
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committer | Felix Fietkau <nbd@openwrt.org> | 2011-07-08 05:20:03 +0000 |
commit | bf11563176e5b8e3755e084ba604d8e2fb568fc1 (patch) | |
tree | fbe2ccdbd9388e80e575fe33f909859cd4d0f4ea /package/mac80211/patches/300-pending_work.patch | |
parent | 6d378e7b20580b58d690795410df6d79db8330f4 (diff) | |
download | mtk-20170518-bf11563176e5b8e3755e084ba604d8e2fb568fc1.zip mtk-20170518-bf11563176e5b8e3755e084ba604d8e2fb568fc1.tar.gz mtk-20170518-bf11563176e5b8e3755e084ba604d8e2fb568fc1.tar.bz2 |
mac80211: add pending crypto bugfixes
SVN-Revision: 27552
Diffstat (limited to 'package/mac80211/patches/300-pending_work.patch')
-rw-r--r-- | package/mac80211/patches/300-pending_work.patch | 544 |
1 files changed, 544 insertions, 0 deletions
diff --git a/package/mac80211/patches/300-pending_work.patch b/package/mac80211/patches/300-pending_work.patch index 494c794..adf59f6 100644 --- a/package/mac80211/patches/300-pending_work.patch +++ b/package/mac80211/patches/300-pending_work.patch @@ -532,3 +532,547 @@ ts->desc_id = MS(ads->status1, AR_TxDescId); ts->ts_tstamp = ads->status4; ts->ts_status = 0; +--- a/net/mac80211/wpa.c ++++ b/net/mac80211/wpa.c +@@ -15,6 +15,7 @@ + #include <linux/gfp.h> + #include <asm/unaligned.h> + #include <net/mac80211.h> ++#include <crypto/aes.h> + + #include "ieee80211_i.h" + #include "michael.h" +@@ -86,6 +87,11 @@ ieee80211_rx_h_michael_mic_verify(struct + struct sk_buff *skb = rx->skb; + struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(skb); + struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; ++ int queue = rx->queue; ++ ++ /* otherwise, TKIP is vulnerable to TID 0 vs. non-QoS replays */ ++ if (rx->queue == NUM_RX_DATA_QUEUES - 1) ++ queue = 0; + + /* + * it makes no sense to check for MIC errors on anything other +@@ -148,8 +154,8 @@ ieee80211_rx_h_michael_mic_verify(struct + + update_iv: + /* update IV in key information to be able to detect replays */ +- rx->key->u.tkip.rx[rx->queue].iv32 = rx->tkip_iv32; +- rx->key->u.tkip.rx[rx->queue].iv16 = rx->tkip_iv16; ++ rx->key->u.tkip.rx[queue].iv32 = rx->tkip_iv32; ++ rx->key->u.tkip.rx[queue].iv16 = rx->tkip_iv16; + + return RX_CONTINUE; + +@@ -165,6 +171,7 @@ static int tkip_encrypt_skb(struct ieee8 + struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; + struct ieee80211_key *key = tx->key; + struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); ++ unsigned long flags; + unsigned int hdrlen; + int len, tail; + u8 *pos; +@@ -192,11 +199,12 @@ static int tkip_encrypt_skb(struct ieee8 + pos += hdrlen; + + /* Increase IV for the frame */ ++ spin_lock_irqsave(&key->u.tkip.txlock, flags); + key->u.tkip.tx.iv16++; + if (key->u.tkip.tx.iv16 == 0) + key->u.tkip.tx.iv32++; +- +- pos = ieee80211_tkip_add_iv(pos, key, key->u.tkip.tx.iv16); ++ pos = ieee80211_tkip_add_iv(pos, key); ++ spin_unlock_irqrestore(&key->u.tkip.txlock, flags); + + /* hwaccel - with software IV */ + if (info->control.hw_key) +@@ -205,9 +213,8 @@ static int tkip_encrypt_skb(struct ieee8 + /* Add room for ICV */ + skb_put(skb, TKIP_ICV_LEN); + +- hdr = (struct ieee80211_hdr *) skb->data; + return ieee80211_tkip_encrypt_data(tx->local->wep_tx_tfm, +- key, pos, len, hdr->addr2); ++ key, skb, pos, len); + } + + +@@ -235,6 +242,11 @@ ieee80211_crypto_tkip_decrypt(struct iee + struct ieee80211_key *key = rx->key; + struct sk_buff *skb = rx->skb; + struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(skb); ++ int queue = rx->queue; ++ ++ /* otherwise, TKIP is vulnerable to TID 0 vs. non-QoS replays */ ++ if (rx->queue == NUM_RX_DATA_QUEUES - 1) ++ queue = 0; + + hdrlen = ieee80211_hdrlen(hdr->frame_control); + +@@ -255,7 +267,7 @@ ieee80211_crypto_tkip_decrypt(struct iee + res = ieee80211_tkip_decrypt_data(rx->local->wep_rx_tfm, + key, skb->data + hdrlen, + skb->len - hdrlen, rx->sta->sta.addr, +- hdr->addr1, hwaccel, rx->queue, ++ hdr->addr1, hwaccel, queue, + &rx->tkip_iv32, + &rx->tkip_iv16); + if (res != TKIP_DECRYPT_OK) +@@ -283,6 +295,8 @@ static void ccmp_special_blocks(struct s + unsigned int hdrlen; + struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; + ++ memset(scratch, 0, 6 * AES_BLOCK_LEN); ++ + b_0 = scratch + 3 * AES_BLOCK_LEN; + aad = scratch + 4 * AES_BLOCK_LEN; + +@@ -373,8 +387,10 @@ static int ccmp_encrypt_skb(struct ieee8 + struct ieee80211_key *key = tx->key; + struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); + int hdrlen, len, tail; +- u8 *pos, *pn; +- int i; ++ u8 *pos; ++ u8 pn[6]; ++ u64 pn64; ++ u8 scratch[6 * AES_BLOCK_LEN]; + + if (info->control.hw_key && + !(info->control.hw_key->flags & IEEE80211_KEY_FLAG_GENERATE_IV)) { +@@ -402,14 +418,14 @@ static int ccmp_encrypt_skb(struct ieee8 + hdr = (struct ieee80211_hdr *) pos; + pos += hdrlen; + +- /* PN = PN + 1 */ +- pn = key->u.ccmp.tx_pn; ++ pn64 = atomic64_inc_return(&key->u.ccmp.tx_pn); + +- for (i = CCMP_PN_LEN - 1; i >= 0; i--) { +- pn[i]++; +- if (pn[i]) +- break; +- } ++ pn[5] = pn64; ++ pn[4] = pn64 >> 8; ++ pn[3] = pn64 >> 16; ++ pn[2] = pn64 >> 24; ++ pn[1] = pn64 >> 32; ++ pn[0] = pn64 >> 40; + + ccmp_pn2hdr(pos, pn, key->conf.keyidx); + +@@ -418,8 +434,8 @@ static int ccmp_encrypt_skb(struct ieee8 + return 0; + + pos += CCMP_HDR_LEN; +- ccmp_special_blocks(skb, pn, key->u.ccmp.tx_crypto_buf, 0); +- ieee80211_aes_ccm_encrypt(key->u.ccmp.tfm, key->u.ccmp.tx_crypto_buf, pos, len, ++ ccmp_special_blocks(skb, pn, scratch, 0); ++ ieee80211_aes_ccm_encrypt(key->u.ccmp.tfm, scratch, pos, len, + pos, skb_put(skb, CCMP_MIC_LEN)); + + return 0; +@@ -475,11 +491,12 @@ ieee80211_crypto_ccmp_decrypt(struct iee + } + + if (!(status->flag & RX_FLAG_DECRYPTED)) { ++ u8 scratch[6 * AES_BLOCK_LEN]; + /* hardware didn't decrypt/verify MIC */ +- ccmp_special_blocks(skb, pn, key->u.ccmp.rx_crypto_buf, 1); ++ ccmp_special_blocks(skb, pn, scratch, 1); + + if (ieee80211_aes_ccm_decrypt( +- key->u.ccmp.tfm, key->u.ccmp.rx_crypto_buf, ++ key->u.ccmp.tfm, scratch, + skb->data + hdrlen + CCMP_HDR_LEN, data_len, + skb->data + skb->len - CCMP_MIC_LEN, + skb->data + hdrlen + CCMP_HDR_LEN)) +--- a/drivers/net/wireless/b43/xmit.c ++++ b/drivers/net/wireless/b43/xmit.c +@@ -323,8 +323,7 @@ int b43_generate_txhdr(struct b43_wldev + /* we give the phase1key and iv16 here, the key is stored in + * shm. With that the hardware can do phase 2 and encryption. + */ +- ieee80211_get_tkip_key(info->control.hw_key, skb_frag, +- IEEE80211_TKIP_P1_KEY, (u8*)phase1key); ++ ieee80211_get_tkip_p1k(info->control.hw_key, skb_frag, phase1key); + /* phase1key is in host endian. Copy to little-endian txhdr->iv. */ + for (i = 0; i < 5; i++) { + txhdr->iv[i * 2 + 0] = phase1key[i]; +--- a/drivers/net/wireless/iwlegacy/iwl-4965-tx.c ++++ b/drivers/net/wireless/iwlegacy/iwl-4965-tx.c +@@ -240,8 +240,7 @@ static void iwl4965_tx_cmd_build_hwcrypt + + case WLAN_CIPHER_SUITE_TKIP: + tx_cmd->sec_ctl = TX_CMD_SEC_TKIP; +- ieee80211_get_tkip_key(keyconf, skb_frag, +- IEEE80211_TKIP_P2_KEY, tx_cmd->key); ++ ieee80211_get_tkip_p2k(keyconf, skb_frag, tx_cmd->key); + IWL_DEBUG_TX(priv, "tx_cmd with tkip hwcrypto\n"); + break; + +--- a/drivers/net/wireless/iwlwifi/iwl-agn-tx.c ++++ b/drivers/net/wireless/iwlwifi/iwl-agn-tx.c +@@ -497,8 +497,7 @@ static void iwlagn_tx_cmd_build_hwcrypto + + case WLAN_CIPHER_SUITE_TKIP: + tx_cmd->sec_ctl = TX_CMD_SEC_TKIP; +- ieee80211_get_tkip_key(keyconf, skb_frag, +- IEEE80211_TKIP_P2_KEY, tx_cmd->key); ++ ieee80211_get_tkip_p2k(keyconf, skb_frag, tx_cmd->key); + IWL_DEBUG_TX(priv, "tx_cmd with tkip hwcrypto\n"); + break; + +--- a/include/net/mac80211.h ++++ b/include/net/mac80211.h +@@ -960,21 +960,6 @@ enum sta_notify_cmd { + }; + + /** +- * enum ieee80211_tkip_key_type - get tkip key +- * +- * Used by drivers which need to get a tkip key for skb. Some drivers need a +- * phase 1 key, others need a phase 2 key. A single function allows the driver +- * to get the key, this enum indicates what type of key is required. +- * +- * @IEEE80211_TKIP_P1_KEY: the driver needs a phase 1 key +- * @IEEE80211_TKIP_P2_KEY: the driver needs a phase 2 key +- */ +-enum ieee80211_tkip_key_type { +- IEEE80211_TKIP_P1_KEY, +- IEEE80211_TKIP_P2_KEY, +-}; +- +-/** + * enum ieee80211_hw_flags - hardware flags + * + * These flags are used to indicate hardware capabilities to +@@ -2568,21 +2553,33 @@ struct sk_buff * + ieee80211_get_buffered_bc(struct ieee80211_hw *hw, struct ieee80211_vif *vif); + + /** +- * ieee80211_get_tkip_key - get a TKIP rc4 for skb ++ * ieee80211_get_tkip_p1k - get a TKIP phase 1 key ++ * ++ * This function returns the TKIP phase 1 key for the IV32 taken ++ * from the given packet. ++ * ++ * @keyconf: the parameter passed with the set key ++ * @skb: the packet to take the IV32 value from that will be encrypted ++ * with this P1K ++ * @p1k: a buffer to which the key will be written, as 5 u16 values ++ */ ++void ieee80211_get_tkip_p1k(struct ieee80211_key_conf *keyconf, ++ struct sk_buff *skb, u16 *p1k); ++ ++/** ++ * ieee80211_get_tkip_p2k - get a TKIP phase 2 key + * +- * This function computes a TKIP rc4 key for an skb. It computes +- * a phase 1 key if needed (iv16 wraps around). This function is to +- * be used by drivers which can do HW encryption but need to compute +- * to phase 1/2 key in SW. ++ * This function computes the TKIP RC4 key for the IV values ++ * in the packet. + * + * @keyconf: the parameter passed with the set key +- * @skb: the skb for which the key is needed +- * @type: TBD +- * @key: a buffer to which the key will be written +- */ +-void ieee80211_get_tkip_key(struct ieee80211_key_conf *keyconf, +- struct sk_buff *skb, +- enum ieee80211_tkip_key_type type, u8 *key); ++ * @skb: the packet to take the IV32/IV16 values from that will be ++ * encrypted with this key ++ * @p2k: a buffer to which the key will be written, 16 bytes ++ */ ++void ieee80211_get_tkip_p2k(struct ieee80211_key_conf *keyconf, ++ struct sk_buff *skb, u8 *p2k); ++ + /** + * ieee80211_wake_queue - wake specific queue + * @hw: pointer as obtained from ieee80211_alloc_hw(). +--- a/net/mac80211/key.c ++++ b/net/mac80211/key.c +@@ -333,6 +333,7 @@ struct ieee80211_key *ieee80211_key_allo + get_unaligned_le16(seq); + } + } ++ spin_lock_init(&key->u.tkip.txlock); + break; + case WLAN_CIPHER_SUITE_CCMP: + key->conf.iv_len = CCMP_HDR_LEN; +--- a/net/mac80211/key.h ++++ b/net/mac80211/key.h +@@ -52,9 +52,10 @@ enum ieee80211_internal_tkip_state { + }; + + struct tkip_ctx { +- u32 iv32; +- u16 iv16; +- u16 p1k[5]; ++ u32 iv32; /* current iv32 */ ++ u16 iv16; /* current iv16 */ ++ u16 p1k[5]; /* p1k cache */ ++ u32 p1k_iv32; /* iv32 for which p1k computed */ + enum ieee80211_internal_tkip_state state; + }; + +@@ -71,6 +72,9 @@ struct ieee80211_key { + + union { + struct { ++ /* protects tx context */ ++ spinlock_t txlock; ++ + /* last used TSC */ + struct tkip_ctx tx; + +@@ -78,7 +82,7 @@ struct ieee80211_key { + struct tkip_ctx rx[NUM_RX_DATA_QUEUES]; + } tkip; + struct { +- u8 tx_pn[6]; ++ atomic64_t tx_pn; + /* + * Last received packet number. The first + * NUM_RX_DATA_QUEUES counters are used with Data +@@ -88,12 +92,9 @@ struct ieee80211_key { + u8 rx_pn[NUM_RX_DATA_QUEUES + 1][6]; + struct crypto_cipher *tfm; + u32 replays; /* dot11RSNAStatsCCMPReplays */ +- /* scratch buffers for virt_to_page() (crypto API) */ + #ifndef AES_BLOCK_LEN + #define AES_BLOCK_LEN 16 + #endif +- u8 tx_crypto_buf[6 * AES_BLOCK_LEN]; +- u8 rx_crypto_buf[6 * AES_BLOCK_LEN]; + } ccmp; + struct { + u8 tx_pn[6]; +--- a/net/mac80211/tkip.c ++++ b/net/mac80211/tkip.c +@@ -101,6 +101,7 @@ static void tkip_mixing_phase1(const u8 + p1k[4] += tkipS(p1k[3] ^ get_unaligned_le16(tk + 0 + j)) + i; + } + ctx->state = TKIP_STATE_PHASE1_DONE; ++ ctx->p1k_iv32 = tsc_IV32; + } + + static void tkip_mixing_phase2(const u8 *tk, struct tkip_ctx *ctx, +@@ -140,60 +141,72 @@ static void tkip_mixing_phase2(const u8 + /* Add TKIP IV and Ext. IV at @pos. @iv0, @iv1, and @iv2 are the first octets + * of the IV. Returns pointer to the octet following IVs (i.e., beginning of + * the packet payload). */ +-u8 *ieee80211_tkip_add_iv(u8 *pos, struct ieee80211_key *key, u16 iv16) ++u8 *ieee80211_tkip_add_iv(u8 *pos, struct ieee80211_key *key) + { +- pos = write_tkip_iv(pos, iv16); ++ lockdep_assert_held(&key->u.tkip.txlock); ++ ++ pos = write_tkip_iv(pos, key->u.tkip.tx.iv16); + *pos++ = (key->conf.keyidx << 6) | (1 << 5) /* Ext IV */; + put_unaligned_le32(key->u.tkip.tx.iv32, pos); + return pos + 4; + } + +-void ieee80211_get_tkip_key(struct ieee80211_key_conf *keyconf, +- struct sk_buff *skb, enum ieee80211_tkip_key_type type, +- u8 *outkey) ++static void ieee80211_compute_tkip_p1k(struct ieee80211_key *key, u32 iv32) + { +- struct ieee80211_key *key = (struct ieee80211_key *) +- container_of(keyconf, struct ieee80211_key, conf); +- struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; +- u8 *data; +- const u8 *tk; +- struct tkip_ctx *ctx; +- u16 iv16; +- u32 iv32; +- +- data = (u8 *)hdr + ieee80211_hdrlen(hdr->frame_control); +- iv16 = data[2] | (data[0] << 8); +- iv32 = get_unaligned_le32(&data[4]); +- +- tk = &key->conf.key[NL80211_TKIP_DATA_OFFSET_ENCR_KEY]; +- ctx = &key->u.tkip.tx; +- +-#ifdef CONFIG_MAC80211_TKIP_DEBUG +- printk(KERN_DEBUG "TKIP encrypt: iv16 = 0x%04x, iv32 = 0x%08x\n", +- iv16, iv32); ++ struct ieee80211_sub_if_data *sdata = key->sdata; ++ struct tkip_ctx *ctx = &key->u.tkip.tx; ++ const u8 *tk = &key->conf.key[NL80211_TKIP_DATA_OFFSET_ENCR_KEY]; + +- if (iv32 != ctx->iv32) { +- printk(KERN_DEBUG "skb: iv32 = 0x%08x key: iv32 = 0x%08x\n", +- iv32, ctx->iv32); +- printk(KERN_DEBUG "Wrap around of iv16 in the middle of a " +- "fragmented packet\n"); +- } +-#endif ++ lockdep_assert_held(&key->u.tkip.txlock); + +- /* Update the p1k only when the iv16 in the packet wraps around, this +- * might occur after the wrap around of iv16 in the key in case of +- * fragmented packets. */ +- if (iv16 == 0 || ctx->state == TKIP_STATE_NOT_INIT) +- tkip_mixing_phase1(tk, ctx, hdr->addr2, iv32); ++ /* ++ * Update the P1K when the IV32 is different from the value it ++ * had when we last computed it (or when not initialised yet). ++ * This might flip-flop back and forth if packets are processed ++ * out-of-order due to the different ACs, but then we have to ++ * just compute the P1K more often. ++ */ ++ if (ctx->p1k_iv32 != iv32 || ctx->state == TKIP_STATE_NOT_INIT) ++ tkip_mixing_phase1(tk, ctx, sdata->vif.addr, iv32); ++} + +- if (type == IEEE80211_TKIP_P1_KEY) { +- memcpy(outkey, ctx->p1k, sizeof(u16) * 5); +- return; +- } ++void ieee80211_get_tkip_p1k(struct ieee80211_key_conf *keyconf, ++ struct sk_buff *skb, u16 *p1k) ++{ ++ struct ieee80211_key *key = (struct ieee80211_key *) ++ container_of(keyconf, struct ieee80211_key, conf); ++ struct tkip_ctx *ctx = &key->u.tkip.tx; ++ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; ++ const u8 *data = (u8 *)hdr + ieee80211_hdrlen(hdr->frame_control); ++ u32 iv32 = get_unaligned_le32(&data[4]); ++ unsigned long flags; ++ ++ spin_lock_irqsave(&key->u.tkip.txlock, flags); ++ ieee80211_compute_tkip_p1k(key, iv32); ++ memcpy(p1k, ctx->p1k, sizeof(ctx->p1k)); ++ spin_unlock_irqrestore(&key->u.tkip.txlock, flags); ++} ++EXPORT_SYMBOL(ieee80211_get_tkip_p1k); + +- tkip_mixing_phase2(tk, ctx, iv16, outkey); ++void ieee80211_get_tkip_p2k(struct ieee80211_key_conf *keyconf, ++ struct sk_buff *skb, u8 *p2k) ++{ ++ struct ieee80211_key *key = (struct ieee80211_key *) ++ container_of(keyconf, struct ieee80211_key, conf); ++ const u8 *tk = &key->conf.key[NL80211_TKIP_DATA_OFFSET_ENCR_KEY]; ++ struct tkip_ctx *ctx = &key->u.tkip.tx; ++ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; ++ const u8 *data = (u8 *)hdr + ieee80211_hdrlen(hdr->frame_control); ++ u32 iv32 = get_unaligned_le32(&data[4]); ++ u16 iv16 = data[2] | (data[0] << 8); ++ unsigned long flags; ++ ++ spin_lock_irqsave(&key->u.tkip.txlock, flags); ++ ieee80211_compute_tkip_p1k(key, iv32); ++ tkip_mixing_phase2(tk, ctx, iv16, p2k); ++ spin_unlock_irqrestore(&key->u.tkip.txlock, flags); + } +-EXPORT_SYMBOL(ieee80211_get_tkip_key); ++EXPORT_SYMBOL(ieee80211_get_tkip_p2k); + + /* + * Encrypt packet payload with TKIP using @key. @pos is a pointer to the +@@ -204,19 +217,15 @@ EXPORT_SYMBOL(ieee80211_get_tkip_key); + */ + int ieee80211_tkip_encrypt_data(struct crypto_cipher *tfm, + struct ieee80211_key *key, +- u8 *pos, size_t payload_len, u8 *ta) ++ struct sk_buff *skb, ++ u8 *payload, size_t payload_len) + { + u8 rc4key[16]; +- struct tkip_ctx *ctx = &key->u.tkip.tx; +- const u8 *tk = &key->conf.key[NL80211_TKIP_DATA_OFFSET_ENCR_KEY]; +- +- /* Calculate per-packet key */ +- if (ctx->iv16 == 0 || ctx->state == TKIP_STATE_NOT_INIT) +- tkip_mixing_phase1(tk, ctx, ta, ctx->iv32); + +- tkip_mixing_phase2(tk, ctx, ctx->iv16, rc4key); ++ ieee80211_get_tkip_p2k(&key->conf, skb, rc4key); + +- return ieee80211_wep_encrypt_data(tfm, rc4key, 16, pos, payload_len); ++ return ieee80211_wep_encrypt_data(tfm, rc4key, 16, ++ payload, payload_len); + } + + /* Decrypt packet payload with TKIP using @key. @pos is a pointer to the +--- a/net/mac80211/tkip.h ++++ b/net/mac80211/tkip.h +@@ -13,11 +13,13 @@ + #include <linux/crypto.h> + #include "key.h" + +-u8 *ieee80211_tkip_add_iv(u8 *pos, struct ieee80211_key *key, u16 iv16); ++u8 *ieee80211_tkip_add_iv(u8 *pos, struct ieee80211_key *key); + + int ieee80211_tkip_encrypt_data(struct crypto_cipher *tfm, +- struct ieee80211_key *key, +- u8 *pos, size_t payload_len, u8 *ta); ++ struct ieee80211_key *key, ++ struct sk_buff *skb, ++ u8 *payload, size_t payload_len); ++ + enum { + TKIP_DECRYPT_OK = 0, + TKIP_DECRYPT_NO_EXT_IV = -1, +--- a/net/mac80211/cfg.c ++++ b/net/mac80211/cfg.c +@@ -209,6 +209,7 @@ static int ieee80211_get_key(struct wiph + u8 seq[6] = {0}; + struct key_params params; + struct ieee80211_key *key = NULL; ++ u64 pn64; + u32 iv32; + u16 iv16; + int err = -ENOENT; +@@ -256,12 +257,13 @@ static int ieee80211_get_key(struct wiph + params.seq_len = 6; + break; + case WLAN_CIPHER_SUITE_CCMP: +- seq[0] = key->u.ccmp.tx_pn[5]; +- seq[1] = key->u.ccmp.tx_pn[4]; +- seq[2] = key->u.ccmp.tx_pn[3]; +- seq[3] = key->u.ccmp.tx_pn[2]; +- seq[4] = key->u.ccmp.tx_pn[1]; +- seq[5] = key->u.ccmp.tx_pn[0]; ++ pn64 = atomic64_read(&key->u.ccmp.tx_pn); ++ seq[0] = pn64; ++ seq[1] = pn64 >> 8; ++ seq[2] = pn64 >> 16; ++ seq[3] = pn64 >> 24; ++ seq[4] = pn64 >> 32; ++ seq[5] = pn64 >> 40; + params.seq = seq; + params.seq_len = 6; + break; +--- a/net/mac80211/debugfs_key.c ++++ b/net/mac80211/debugfs_key.c +@@ -79,6 +79,7 @@ static ssize_t key_tx_spec_read(struct f + size_t count, loff_t *ppos) + { + const u8 *tpn; ++ u64 pn; + char buf[20]; + int len; + struct ieee80211_key *key = file->private_data; +@@ -94,9 +95,10 @@ static ssize_t key_tx_spec_read(struct f + key->u.tkip.tx.iv16); + break; + case WLAN_CIPHER_SUITE_CCMP: +- tpn = key->u.ccmp.tx_pn; ++ pn = atomic64_read(&key->u.ccmp.tx_pn); + len = scnprintf(buf, sizeof(buf), "%02x%02x%02x%02x%02x%02x\n", +- tpn[0], tpn[1], tpn[2], tpn[3], tpn[4], tpn[5]); ++ (u8)(pn >> 40), (u8)(pn >> 32), (u8)(pn >> 24), ++ (u8)(pn >> 16), (u8)(pn >> 8), (u8)pn); + break; + case WLAN_CIPHER_SUITE_AES_CMAC: + tpn = key->u.aes_cmac.tx_pn; |