wireless: move crypto constants to ieee80211.h
mac80211 and the Intel drivers all define crypto constants, move them to ieee80211.h instead. Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Родитель
04a161f460
Коммит
4325f6caad
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@ -1347,14 +1347,6 @@ struct il_rx_mpdu_res_start {
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#define TX_CMD_SEC_SHIFT 6
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#define TX_CMD_SEC_KEY128 0x08
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/*
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* security overhead sizes
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*/
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#define WEP_IV_LEN 4
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#define WEP_ICV_LEN 4
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#define CCMP_MIC_LEN 8
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#define TKIP_ICV_LEN 4
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/*
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* C_TX = 0x1c (command)
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*/
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@ -1224,14 +1224,6 @@ struct iwl_rx_mpdu_res_start {
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#define TX_CMD_SEC_SHIFT 6
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#define TX_CMD_SEC_KEY128 0x08
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/*
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* security overhead sizes
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*/
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#define WEP_IV_LEN 4
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#define WEP_ICV_LEN 4
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#define CCMP_MIC_LEN 8
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#define TKIP_ICV_LEN 4
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/*
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* REPLY_TX = 0x1c (command)
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*/
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@ -224,13 +224,13 @@ static void iwl_pcie_txq_update_byte_cnt_tbl(struct iwl_trans *trans,
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switch (sec_ctl & TX_CMD_SEC_MSK) {
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case TX_CMD_SEC_CCM:
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len += CCMP_MIC_LEN;
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len += IEEE80211_CCMP_MIC_LEN;
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break;
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case TX_CMD_SEC_TKIP:
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len += TKIP_ICV_LEN;
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len += IEEE80211_TKIP_ICV_LEN;
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break;
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case TX_CMD_SEC_WEP:
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len += WEP_IV_LEN + WEP_ICV_LEN;
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len += IEEE80211_WEP_IV_LEN + IEEE80211_WEP_ICV_LEN;
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break;
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}
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@ -1829,6 +1829,15 @@ enum ieee80211_key_len {
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WLAN_KEY_LEN_AES_CMAC = 16,
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};
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#define IEEE80211_WEP_IV_LEN 4
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#define IEEE80211_WEP_ICV_LEN 4
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#define IEEE80211_CCMP_HDR_LEN 8
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#define IEEE80211_CCMP_MIC_LEN 8
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#define IEEE80211_CCMP_PN_LEN 6
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#define IEEE80211_TKIP_IV_LEN 8
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#define IEEE80211_TKIP_ICV_LEN 4
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#define IEEE80211_CMAC_PN_LEN 6
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/* Public action codes */
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enum ieee80211_pub_actioncode {
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WLAN_PUB_ACTION_EXT_CHANSW_ANN = 4,
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@ -85,7 +85,7 @@ void ieee80211_aes_ccm_encrypt(struct crypto_cipher *tfm, u8 *scratch,
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*cpos++ = *pos++ ^ e[i];
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}
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for (i = 0; i < CCMP_MIC_LEN; i++)
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for (i = 0; i < IEEE80211_CCMP_MIC_LEN; i++)
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mic[i] = b[i] ^ s_0[i];
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}
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@ -123,7 +123,7 @@ int ieee80211_aes_ccm_decrypt(struct crypto_cipher *tfm, u8 *scratch,
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crypto_cipher_encrypt_one(tfm, a, a);
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}
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for (i = 0; i < CCMP_MIC_LEN; i++) {
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for (i = 0; i < IEEE80211_CCMP_MIC_LEN; i++) {
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if ((mic[i] ^ s_0[i]) != a[i])
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return -1;
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}
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@ -138,7 +138,7 @@ struct crypto_cipher *ieee80211_aes_key_setup_encrypt(const u8 key[])
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tfm = crypto_alloc_cipher("aes", 0, CRYPTO_ALG_ASYNC);
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if (!IS_ERR(tfm))
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crypto_cipher_setkey(tfm, key, ALG_CCMP_KEY_LEN);
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crypto_cipher_setkey(tfm, key, WLAN_KEY_LEN_CCMP);
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return tfm;
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}
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@ -335,12 +335,12 @@ struct ieee80211_key *ieee80211_key_alloc(u32 cipher, int idx, size_t key_len,
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switch (cipher) {
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case WLAN_CIPHER_SUITE_WEP40:
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case WLAN_CIPHER_SUITE_WEP104:
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key->conf.iv_len = WEP_IV_LEN;
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key->conf.icv_len = WEP_ICV_LEN;
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key->conf.iv_len = IEEE80211_WEP_IV_LEN;
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key->conf.icv_len = IEEE80211_WEP_ICV_LEN;
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break;
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case WLAN_CIPHER_SUITE_TKIP:
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key->conf.iv_len = TKIP_IV_LEN;
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key->conf.icv_len = TKIP_ICV_LEN;
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key->conf.iv_len = IEEE80211_TKIP_IV_LEN;
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key->conf.icv_len = IEEE80211_TKIP_ICV_LEN;
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if (seq) {
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for (i = 0; i < IEEE80211_NUM_TIDS; i++) {
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key->u.tkip.rx[i].iv32 =
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@ -352,13 +352,13 @@ struct ieee80211_key *ieee80211_key_alloc(u32 cipher, int idx, size_t key_len,
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spin_lock_init(&key->u.tkip.txlock);
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break;
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case WLAN_CIPHER_SUITE_CCMP:
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key->conf.iv_len = CCMP_HDR_LEN;
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key->conf.icv_len = CCMP_MIC_LEN;
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key->conf.iv_len = IEEE80211_CCMP_HDR_LEN;
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key->conf.icv_len = IEEE80211_CCMP_MIC_LEN;
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if (seq) {
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for (i = 0; i < IEEE80211_NUM_TIDS + 1; i++)
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for (j = 0; j < CCMP_PN_LEN; j++)
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for (j = 0; j < IEEE80211_CCMP_PN_LEN; j++)
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key->u.ccmp.rx_pn[i][j] =
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seq[CCMP_PN_LEN - j - 1];
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seq[IEEE80211_CCMP_PN_LEN - j - 1];
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}
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/*
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* Initialize AES key state here as an optimization so that
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@ -375,9 +375,9 @@ struct ieee80211_key *ieee80211_key_alloc(u32 cipher, int idx, size_t key_len,
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key->conf.iv_len = 0;
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key->conf.icv_len = sizeof(struct ieee80211_mmie);
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if (seq)
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for (j = 0; j < CMAC_PN_LEN; j++)
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for (j = 0; j < IEEE80211_CMAC_PN_LEN; j++)
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key->u.aes_cmac.rx_pn[j] =
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seq[CMAC_PN_LEN - j - 1];
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seq[IEEE80211_CMAC_PN_LEN - j - 1];
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/*
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* Initialize AES key state here as an optimization so that
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* it does not need to be initialized for every packet.
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@ -740,13 +740,13 @@ void ieee80211_get_key_rx_seq(struct ieee80211_key_conf *keyconf,
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pn = key->u.ccmp.rx_pn[IEEE80211_NUM_TIDS];
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else
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pn = key->u.ccmp.rx_pn[tid];
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memcpy(seq->ccmp.pn, pn, CCMP_PN_LEN);
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memcpy(seq->ccmp.pn, pn, IEEE80211_CCMP_PN_LEN);
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break;
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case WLAN_CIPHER_SUITE_AES_CMAC:
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if (WARN_ON(tid != 0))
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return;
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pn = key->u.aes_cmac.rx_pn;
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memcpy(seq->aes_cmac.pn, pn, CMAC_PN_LEN);
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memcpy(seq->aes_cmac.pn, pn, IEEE80211_CMAC_PN_LEN);
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break;
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}
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}
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@ -19,17 +19,6 @@
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#define NUM_DEFAULT_KEYS 4
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#define NUM_DEFAULT_MGMT_KEYS 2
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#define WEP_IV_LEN 4
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#define WEP_ICV_LEN 4
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#define ALG_CCMP_KEY_LEN 16
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#define CCMP_HDR_LEN 8
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#define CCMP_MIC_LEN 8
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#define CCMP_TK_LEN 16
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#define CCMP_PN_LEN 6
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#define TKIP_IV_LEN 8
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#define TKIP_ICV_LEN 4
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#define CMAC_PN_LEN 6
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struct ieee80211_local;
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struct ieee80211_sub_if_data;
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struct sta_info;
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@ -93,13 +82,13 @@ struct ieee80211_key {
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* frames and the last counter is used with Robust
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* Management frames.
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*/
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u8 rx_pn[IEEE80211_NUM_TIDS + 1][CCMP_PN_LEN];
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u8 rx_pn[IEEE80211_NUM_TIDS + 1][IEEE80211_CCMP_PN_LEN];
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struct crypto_cipher *tfm;
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u32 replays; /* dot11RSNAStatsCCMPReplays */
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} ccmp;
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struct {
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atomic64_t tx_pn;
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u8 rx_pn[CMAC_PN_LEN];
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u8 rx_pn[IEEE80211_CMAC_PN_LEN];
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struct crypto_cipher *tfm;
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u32 replays; /* dot11RSNAStatsCMACReplays */
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u32 icverrors; /* dot11RSNAStatsCMACICVErrors */
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@ -1622,7 +1622,7 @@ ieee80211_rx_h_defragment(struct ieee80211_rx_data *rx)
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entry->ccmp = 1;
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memcpy(entry->last_pn,
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rx->key->u.ccmp.rx_pn[queue],
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CCMP_PN_LEN);
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IEEE80211_CCMP_PN_LEN);
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}
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return RX_QUEUED;
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}
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@ -1641,21 +1641,21 @@ ieee80211_rx_h_defragment(struct ieee80211_rx_data *rx)
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* (IEEE 802.11i, 8.3.3.4.5) */
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if (entry->ccmp) {
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int i;
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u8 pn[CCMP_PN_LEN], *rpn;
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u8 pn[IEEE80211_CCMP_PN_LEN], *rpn;
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int queue;
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if (!rx->key || rx->key->conf.cipher != WLAN_CIPHER_SUITE_CCMP)
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return RX_DROP_UNUSABLE;
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memcpy(pn, entry->last_pn, CCMP_PN_LEN);
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for (i = CCMP_PN_LEN - 1; i >= 0; i--) {
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memcpy(pn, entry->last_pn, IEEE80211_CCMP_PN_LEN);
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for (i = IEEE80211_CCMP_PN_LEN - 1; i >= 0; i--) {
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pn[i]++;
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if (pn[i])
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break;
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}
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queue = rx->security_idx;
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rpn = rx->key->u.ccmp.rx_pn[queue];
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if (memcmp(pn, rpn, CCMP_PN_LEN))
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if (memcmp(pn, rpn, IEEE80211_CCMP_PN_LEN))
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return RX_DROP_UNUSABLE;
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memcpy(entry->last_pn, pn, CCMP_PN_LEN);
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memcpy(entry->last_pn, pn, IEEE80211_CCMP_PN_LEN);
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}
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skb_pull(rx->skb, ieee80211_hdrlen(fc));
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@ -28,7 +28,7 @@
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int ieee80211_wep_init(struct ieee80211_local *local)
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{
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/* start WEP IV from a random value */
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get_random_bytes(&local->wep_iv, WEP_IV_LEN);
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get_random_bytes(&local->wep_iv, IEEE80211_WEP_IV_LEN);
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local->wep_tx_tfm = crypto_alloc_cipher("arc4", 0, CRYPTO_ALG_ASYNC);
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if (IS_ERR(local->wep_tx_tfm)) {
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@ -98,20 +98,21 @@ static u8 *ieee80211_wep_add_iv(struct ieee80211_local *local,
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hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
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if (WARN_ON(skb_tailroom(skb) < WEP_ICV_LEN ||
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skb_headroom(skb) < WEP_IV_LEN))
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if (WARN_ON(skb_tailroom(skb) < IEEE80211_WEP_ICV_LEN ||
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skb_headroom(skb) < IEEE80211_WEP_IV_LEN))
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return NULL;
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hdrlen = ieee80211_hdrlen(hdr->frame_control);
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newhdr = skb_push(skb, WEP_IV_LEN);
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memmove(newhdr, newhdr + WEP_IV_LEN, hdrlen);
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newhdr = skb_push(skb, IEEE80211_WEP_IV_LEN);
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memmove(newhdr, newhdr + IEEE80211_WEP_IV_LEN, hdrlen);
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/* the HW only needs room for the IV, but not the actual IV */
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if (info->control.hw_key &&
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(info->control.hw_key->flags & IEEE80211_KEY_FLAG_PUT_IV_SPACE))
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return newhdr + hdrlen;
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skb_set_network_header(skb, skb_network_offset(skb) + WEP_IV_LEN);
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skb_set_network_header(skb, skb_network_offset(skb) +
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IEEE80211_WEP_IV_LEN);
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ieee80211_wep_get_iv(local, keylen, keyidx, newhdr + hdrlen);
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return newhdr + hdrlen;
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}
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@ -125,8 +126,8 @@ static void ieee80211_wep_remove_iv(struct ieee80211_local *local,
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unsigned int hdrlen;
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hdrlen = ieee80211_hdrlen(hdr->frame_control);
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memmove(skb->data + WEP_IV_LEN, skb->data, hdrlen);
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skb_pull(skb, WEP_IV_LEN);
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memmove(skb->data + IEEE80211_WEP_IV_LEN, skb->data, hdrlen);
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skb_pull(skb, IEEE80211_WEP_IV_LEN);
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}
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@ -146,7 +147,7 @@ int ieee80211_wep_encrypt_data(struct crypto_cipher *tfm, u8 *rc4key,
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put_unaligned(icv, (__le32 *)(data + data_len));
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crypto_cipher_setkey(tfm, rc4key, klen);
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for (i = 0; i < data_len + WEP_ICV_LEN; i++)
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for (i = 0; i < data_len + IEEE80211_WEP_ICV_LEN; i++)
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crypto_cipher_encrypt_one(tfm, data + i, data + i);
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return 0;
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@ -172,7 +173,7 @@ int ieee80211_wep_encrypt(struct ieee80211_local *local,
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if (!iv)
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return -1;
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len = skb->len - (iv + WEP_IV_LEN - skb->data);
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len = skb->len - (iv + IEEE80211_WEP_IV_LEN - skb->data);
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/* Prepend 24-bit IV to RC4 key */
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memcpy(rc4key, iv, 3);
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@ -181,10 +182,10 @@ int ieee80211_wep_encrypt(struct ieee80211_local *local,
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memcpy(rc4key + 3, key, keylen);
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/* Add room for ICV */
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skb_put(skb, WEP_ICV_LEN);
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skb_put(skb, IEEE80211_WEP_ICV_LEN);
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return ieee80211_wep_encrypt_data(local->wep_tx_tfm, rc4key, keylen + 3,
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iv + WEP_IV_LEN, len);
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iv + IEEE80211_WEP_IV_LEN, len);
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}
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@ -201,11 +202,11 @@ int ieee80211_wep_decrypt_data(struct crypto_cipher *tfm, u8 *rc4key,
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return -1;
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crypto_cipher_setkey(tfm, rc4key, klen);
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for (i = 0; i < data_len + WEP_ICV_LEN; i++)
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for (i = 0; i < data_len + IEEE80211_WEP_ICV_LEN; i++)
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crypto_cipher_decrypt_one(tfm, data + i, data + i);
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crc = cpu_to_le32(~crc32_le(~0, data, data_len));
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if (memcmp(&crc, data + data_len, WEP_ICV_LEN) != 0)
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if (memcmp(&crc, data + data_len, IEEE80211_WEP_ICV_LEN) != 0)
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/* ICV mismatch */
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return -1;
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@ -237,10 +238,10 @@ static int ieee80211_wep_decrypt(struct ieee80211_local *local,
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return -1;
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hdrlen = ieee80211_hdrlen(hdr->frame_control);
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if (skb->len < hdrlen + WEP_IV_LEN + WEP_ICV_LEN)
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if (skb->len < hdrlen + IEEE80211_WEP_IV_LEN + IEEE80211_WEP_ICV_LEN)
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return -1;
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len = skb->len - hdrlen - WEP_IV_LEN - WEP_ICV_LEN;
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len = skb->len - hdrlen - IEEE80211_WEP_IV_LEN - IEEE80211_WEP_ICV_LEN;
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keyidx = skb->data[hdrlen + 3] >> 6;
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@ -256,16 +257,16 @@ static int ieee80211_wep_decrypt(struct ieee80211_local *local,
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memcpy(rc4key + 3, key->conf.key, key->conf.keylen);
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if (ieee80211_wep_decrypt_data(local->wep_rx_tfm, rc4key, klen,
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skb->data + hdrlen + WEP_IV_LEN,
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len))
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skb->data + hdrlen +
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IEEE80211_WEP_IV_LEN, len))
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ret = -1;
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/* Trim ICV */
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skb_trim(skb, skb->len - WEP_ICV_LEN);
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skb_trim(skb, skb->len - IEEE80211_WEP_ICV_LEN);
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/* Remove IV */
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memmove(skb->data + WEP_IV_LEN, skb->data, hdrlen);
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skb_pull(skb, WEP_IV_LEN);
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memmove(skb->data + IEEE80211_WEP_IV_LEN, skb->data, hdrlen);
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skb_pull(skb, IEEE80211_WEP_IV_LEN);
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return ret;
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}
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@ -305,13 +306,14 @@ ieee80211_crypto_wep_decrypt(struct ieee80211_rx_data *rx)
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if (ieee80211_wep_decrypt(rx->local, rx->skb, rx->key))
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return RX_DROP_UNUSABLE;
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} else if (!(status->flag & RX_FLAG_IV_STRIPPED)) {
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if (!pskb_may_pull(rx->skb, ieee80211_hdrlen(fc) + WEP_IV_LEN))
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if (!pskb_may_pull(rx->skb, ieee80211_hdrlen(fc) +
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IEEE80211_WEP_IV_LEN))
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return RX_DROP_UNUSABLE;
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if (rx->sta && ieee80211_wep_is_weak_iv(rx->skb, rx->key))
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rx->sta->wep_weak_iv_count++;
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ieee80211_wep_remove_iv(rx->local, rx->skb, rx->key);
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/* remove ICV */
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if (pskb_trim(rx->skb, rx->skb->len - WEP_ICV_LEN))
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if (pskb_trim(rx->skb, rx->skb->len - IEEE80211_WEP_ICV_LEN))
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return RX_DROP_UNUSABLE;
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}
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@ -62,10 +62,10 @@ ieee80211_tx_h_michael_mic_add(struct ieee80211_tx_data *tx)
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tail = MICHAEL_MIC_LEN;
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if (!info->control.hw_key)
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tail += TKIP_ICV_LEN;
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tail += IEEE80211_TKIP_ICV_LEN;
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||||
|
||||
if (WARN_ON(skb_tailroom(skb) < tail ||
|
||||
skb_headroom(skb) < TKIP_IV_LEN))
|
||||
skb_headroom(skb) < IEEE80211_TKIP_IV_LEN))
|
||||
return TX_DROP;
|
||||
|
||||
key = &tx->key->conf.key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY];
|
||||
|
@ -198,15 +198,16 @@ static int tkip_encrypt_skb(struct ieee80211_tx_data *tx, struct sk_buff *skb)
|
|||
if (info->control.hw_key)
|
||||
tail = 0;
|
||||
else
|
||||
tail = TKIP_ICV_LEN;
|
||||
tail = IEEE80211_TKIP_ICV_LEN;
|
||||
|
||||
if (WARN_ON(skb_tailroom(skb) < tail ||
|
||||
skb_headroom(skb) < TKIP_IV_LEN))
|
||||
skb_headroom(skb) < IEEE80211_TKIP_IV_LEN))
|
||||
return -1;
|
||||
|
||||
pos = skb_push(skb, TKIP_IV_LEN);
|
||||
memmove(pos, pos + TKIP_IV_LEN, hdrlen);
|
||||
skb_set_network_header(skb, skb_network_offset(skb) + TKIP_IV_LEN);
|
||||
pos = skb_push(skb, IEEE80211_TKIP_IV_LEN);
|
||||
memmove(pos, pos + IEEE80211_TKIP_IV_LEN, hdrlen);
|
||||
skb_set_network_header(skb, skb_network_offset(skb) +
|
||||
IEEE80211_TKIP_IV_LEN);
|
||||
pos += hdrlen;
|
||||
|
||||
/* the HW only needs room for the IV, but not the actual IV */
|
||||
|
@ -227,7 +228,7 @@ static int tkip_encrypt_skb(struct ieee80211_tx_data *tx, struct sk_buff *skb)
|
|||
return 0;
|
||||
|
||||
/* Add room for ICV */
|
||||
skb_put(skb, TKIP_ICV_LEN);
|
||||
skb_put(skb, IEEE80211_TKIP_ICV_LEN);
|
||||
|
||||
return ieee80211_tkip_encrypt_data(tx->local->wep_tx_tfm,
|
||||
key, skb, pos, len);
|
||||
|
@ -290,11 +291,11 @@ ieee80211_crypto_tkip_decrypt(struct ieee80211_rx_data *rx)
|
|||
return RX_DROP_UNUSABLE;
|
||||
|
||||
/* Trim ICV */
|
||||
skb_trim(skb, skb->len - TKIP_ICV_LEN);
|
||||
skb_trim(skb, skb->len - IEEE80211_TKIP_ICV_LEN);
|
||||
|
||||
/* Remove IV */
|
||||
memmove(skb->data + TKIP_IV_LEN, skb->data, hdrlen);
|
||||
skb_pull(skb, TKIP_IV_LEN);
|
||||
memmove(skb->data + IEEE80211_TKIP_IV_LEN, skb->data, hdrlen);
|
||||
skb_pull(skb, IEEE80211_TKIP_IV_LEN);
|
||||
|
||||
return RX_CONTINUE;
|
||||
}
|
||||
|
@ -337,9 +338,9 @@ static void ccmp_special_blocks(struct sk_buff *skb, u8 *pn, u8 *scratch,
|
|||
else
|
||||
qos_tid = 0;
|
||||
|
||||
data_len = skb->len - hdrlen - CCMP_HDR_LEN;
|
||||
data_len = skb->len - hdrlen - IEEE80211_CCMP_HDR_LEN;
|
||||
if (encrypted)
|
||||
data_len -= CCMP_MIC_LEN;
|
||||
data_len -= IEEE80211_CCMP_MIC_LEN;
|
||||
|
||||
/* First block, b_0 */
|
||||
b_0[0] = 0x59; /* flags: Adata: 1, M: 011, L: 001 */
|
||||
|
@ -348,7 +349,7 @@ static void ccmp_special_blocks(struct sk_buff *skb, u8 *pn, u8 *scratch,
|
|||
*/
|
||||
b_0[1] = qos_tid | (mgmt << 4);
|
||||
memcpy(&b_0[2], hdr->addr2, ETH_ALEN);
|
||||
memcpy(&b_0[8], pn, CCMP_PN_LEN);
|
||||
memcpy(&b_0[8], pn, IEEE80211_CCMP_PN_LEN);
|
||||
/* l(m) */
|
||||
put_unaligned_be16(data_len, &b_0[14]);
|
||||
|
||||
|
@ -424,15 +425,16 @@ static int ccmp_encrypt_skb(struct ieee80211_tx_data *tx, struct sk_buff *skb)
|
|||
if (info->control.hw_key)
|
||||
tail = 0;
|
||||
else
|
||||
tail = CCMP_MIC_LEN;
|
||||
tail = IEEE80211_CCMP_MIC_LEN;
|
||||
|
||||
if (WARN_ON(skb_tailroom(skb) < tail ||
|
||||
skb_headroom(skb) < CCMP_HDR_LEN))
|
||||
skb_headroom(skb) < IEEE80211_CCMP_HDR_LEN))
|
||||
return -1;
|
||||
|
||||
pos = skb_push(skb, CCMP_HDR_LEN);
|
||||
memmove(pos, pos + CCMP_HDR_LEN, hdrlen);
|
||||
skb_set_network_header(skb, skb_network_offset(skb) + CCMP_HDR_LEN);
|
||||
pos = skb_push(skb, IEEE80211_CCMP_HDR_LEN);
|
||||
memmove(pos, pos + IEEE80211_CCMP_HDR_LEN, hdrlen);
|
||||
skb_set_network_header(skb, skb_network_offset(skb) +
|
||||
IEEE80211_CCMP_HDR_LEN);
|
||||
|
||||
/* the HW only needs room for the IV, but not the actual IV */
|
||||
if (info->control.hw_key &&
|
||||
|
@ -457,10 +459,10 @@ static int ccmp_encrypt_skb(struct ieee80211_tx_data *tx, struct sk_buff *skb)
|
|||
if (info->control.hw_key)
|
||||
return 0;
|
||||
|
||||
pos += CCMP_HDR_LEN;
|
||||
pos += IEEE80211_CCMP_HDR_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));
|
||||
pos, skb_put(skb, IEEE80211_CCMP_MIC_LEN));
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
@ -490,7 +492,7 @@ ieee80211_crypto_ccmp_decrypt(struct ieee80211_rx_data *rx)
|
|||
struct ieee80211_key *key = rx->key;
|
||||
struct sk_buff *skb = rx->skb;
|
||||
struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(skb);
|
||||
u8 pn[CCMP_PN_LEN];
|
||||
u8 pn[IEEE80211_CCMP_PN_LEN];
|
||||
int data_len;
|
||||
int queue;
|
||||
|
||||
|
@ -500,12 +502,13 @@ ieee80211_crypto_ccmp_decrypt(struct ieee80211_rx_data *rx)
|
|||
!ieee80211_is_robust_mgmt_frame(hdr))
|
||||
return RX_CONTINUE;
|
||||
|
||||
data_len = skb->len - hdrlen - CCMP_HDR_LEN - CCMP_MIC_LEN;
|
||||
data_len = skb->len - hdrlen - IEEE80211_CCMP_HDR_LEN -
|
||||
IEEE80211_CCMP_MIC_LEN;
|
||||
if (!rx->sta || data_len < 0)
|
||||
return RX_DROP_UNUSABLE;
|
||||
|
||||
if (status->flag & RX_FLAG_DECRYPTED) {
|
||||
if (!pskb_may_pull(rx->skb, hdrlen + CCMP_HDR_LEN))
|
||||
if (!pskb_may_pull(rx->skb, hdrlen + IEEE80211_CCMP_HDR_LEN))
|
||||
return RX_DROP_UNUSABLE;
|
||||
} else {
|
||||
if (skb_linearize(rx->skb))
|
||||
|
@ -516,7 +519,7 @@ ieee80211_crypto_ccmp_decrypt(struct ieee80211_rx_data *rx)
|
|||
|
||||
queue = rx->security_idx;
|
||||
|
||||
if (memcmp(pn, key->u.ccmp.rx_pn[queue], CCMP_PN_LEN) <= 0) {
|
||||
if (memcmp(pn, key->u.ccmp.rx_pn[queue], IEEE80211_CCMP_PN_LEN) <= 0) {
|
||||
key->u.ccmp.replays++;
|
||||
return RX_DROP_UNUSABLE;
|
||||
}
|
||||
|
@ -528,19 +531,20 @@ ieee80211_crypto_ccmp_decrypt(struct ieee80211_rx_data *rx)
|
|||
|
||||
if (ieee80211_aes_ccm_decrypt(
|
||||
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))
|
||||
skb->data + hdrlen + IEEE80211_CCMP_HDR_LEN,
|
||||
data_len,
|
||||
skb->data + skb->len - IEEE80211_CCMP_MIC_LEN,
|
||||
skb->data + hdrlen + IEEE80211_CCMP_HDR_LEN))
|
||||
return RX_DROP_UNUSABLE;
|
||||
}
|
||||
|
||||
memcpy(key->u.ccmp.rx_pn[queue], pn, CCMP_PN_LEN);
|
||||
memcpy(key->u.ccmp.rx_pn[queue], pn, IEEE80211_CCMP_PN_LEN);
|
||||
|
||||
/* Remove CCMP header and MIC */
|
||||
if (pskb_trim(skb, skb->len - CCMP_MIC_LEN))
|
||||
if (pskb_trim(skb, skb->len - IEEE80211_CCMP_MIC_LEN))
|
||||
return RX_DROP_UNUSABLE;
|
||||
memmove(skb->data + CCMP_HDR_LEN, skb->data, hdrlen);
|
||||
skb_pull(skb, CCMP_HDR_LEN);
|
||||
memmove(skb->data + IEEE80211_CCMP_HDR_LEN, skb->data, hdrlen);
|
||||
skb_pull(skb, IEEE80211_CCMP_HDR_LEN);
|
||||
|
||||
return RX_CONTINUE;
|
||||
}
|
||||
|
|
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Ссылка в новой задаче