mirror of
https://github.com/openwrt/openwrt.git
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256 lines
7.2 KiB
Diff
256 lines
7.2 KiB
Diff
--- a/drivers/net/wireless/ath/ath9k/main.c
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+++ b/drivers/net/wireless/ath/ath9k/main.c
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@@ -622,234 +622,6 @@ static u32 ath_get_extchanmode(struct at
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return chanmode;
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}
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-static int ath_setkey_tkip(struct ath_common *common, u16 keyix, const u8 *key,
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- struct ath9k_keyval *hk, const u8 *addr,
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- bool authenticator)
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-{
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- struct ath_hw *ah = common->ah;
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- const u8 *key_rxmic;
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- const u8 *key_txmic;
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-
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- key_txmic = key + NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY;
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- key_rxmic = key + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY;
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-
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- if (addr == NULL) {
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- /*
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- * Group key installation - only two key cache entries are used
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- * regardless of splitmic capability since group key is only
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- * used either for TX or RX.
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- */
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- if (authenticator) {
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- memcpy(hk->kv_mic, key_txmic, sizeof(hk->kv_mic));
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- memcpy(hk->kv_txmic, key_txmic, sizeof(hk->kv_mic));
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- } else {
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- memcpy(hk->kv_mic, key_rxmic, sizeof(hk->kv_mic));
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- memcpy(hk->kv_txmic, key_rxmic, sizeof(hk->kv_mic));
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- }
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- return ath9k_hw_set_keycache_entry(ah, keyix, hk, addr);
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- }
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- if (!common->splitmic) {
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- /* TX and RX keys share the same key cache entry. */
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- memcpy(hk->kv_mic, key_rxmic, sizeof(hk->kv_mic));
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- memcpy(hk->kv_txmic, key_txmic, sizeof(hk->kv_txmic));
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- return ath9k_hw_set_keycache_entry(ah, keyix, hk, addr);
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- }
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-
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- /* Separate key cache entries for TX and RX */
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-
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- /* TX key goes at first index, RX key at +32. */
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- memcpy(hk->kv_mic, key_txmic, sizeof(hk->kv_mic));
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- if (!ath9k_hw_set_keycache_entry(ah, keyix, hk, NULL)) {
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- /* TX MIC entry failed. No need to proceed further */
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- ath_print(common, ATH_DBG_FATAL,
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- "Setting TX MIC Key Failed\n");
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- return 0;
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- }
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-
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- memcpy(hk->kv_mic, key_rxmic, sizeof(hk->kv_mic));
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- /* XXX delete tx key on failure? */
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- return ath9k_hw_set_keycache_entry(ah, keyix + 32, hk, addr);
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-}
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-
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-static int ath_reserve_key_cache_slot_tkip(struct ath_common *common)
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-{
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- int i;
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-
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- for (i = IEEE80211_WEP_NKID; i < common->keymax / 2; i++) {
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- if (test_bit(i, common->keymap) ||
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- test_bit(i + 64, common->keymap))
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- continue; /* At least one part of TKIP key allocated */
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- if (common->splitmic &&
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- (test_bit(i + 32, common->keymap) ||
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- test_bit(i + 64 + 32, common->keymap)))
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- continue; /* At least one part of TKIP key allocated */
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-
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- /* Found a free slot for a TKIP key */
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- return i;
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- }
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- return -1;
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-}
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-
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-static int ath_reserve_key_cache_slot(struct ath_common *common)
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-{
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- int i;
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-
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- /* First, try to find slots that would not be available for TKIP. */
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- if (common->splitmic) {
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- for (i = IEEE80211_WEP_NKID; i < common->keymax / 4; i++) {
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- if (!test_bit(i, common->keymap) &&
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- (test_bit(i + 32, common->keymap) ||
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- test_bit(i + 64, common->keymap) ||
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- test_bit(i + 64 + 32, common->keymap)))
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- return i;
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- if (!test_bit(i + 32, common->keymap) &&
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- (test_bit(i, common->keymap) ||
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- test_bit(i + 64, common->keymap) ||
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- test_bit(i + 64 + 32, common->keymap)))
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- return i + 32;
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- if (!test_bit(i + 64, common->keymap) &&
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- (test_bit(i , common->keymap) ||
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- test_bit(i + 32, common->keymap) ||
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- test_bit(i + 64 + 32, common->keymap)))
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- return i + 64;
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- if (!test_bit(i + 64 + 32, common->keymap) &&
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- (test_bit(i, common->keymap) ||
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- test_bit(i + 32, common->keymap) ||
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- test_bit(i + 64, common->keymap)))
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- return i + 64 + 32;
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- }
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- } else {
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- for (i = IEEE80211_WEP_NKID; i < common->keymax / 2; i++) {
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- if (!test_bit(i, common->keymap) &&
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- test_bit(i + 64, common->keymap))
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- return i;
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- if (test_bit(i, common->keymap) &&
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- !test_bit(i + 64, common->keymap))
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- return i + 64;
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- }
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- }
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-
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- /* No partially used TKIP slots, pick any available slot */
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- for (i = IEEE80211_WEP_NKID; i < common->keymax; i++) {
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- /* Do not allow slots that could be needed for TKIP group keys
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- * to be used. This limitation could be removed if we know that
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- * TKIP will not be used. */
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- if (i >= 64 && i < 64 + IEEE80211_WEP_NKID)
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- continue;
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- if (common->splitmic) {
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- if (i >= 32 && i < 32 + IEEE80211_WEP_NKID)
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- continue;
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- if (i >= 64 + 32 && i < 64 + 32 + IEEE80211_WEP_NKID)
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- continue;
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- }
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-
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- if (!test_bit(i, common->keymap))
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- return i; /* Found a free slot for a key */
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- }
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-
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- /* No free slot found */
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- return -1;
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-}
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-
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-static int ath_key_config(struct ath_common *common,
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- struct ieee80211_vif *vif,
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- struct ieee80211_sta *sta,
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- struct ieee80211_key_conf *key)
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-{
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- struct ath_hw *ah = common->ah;
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- struct ath9k_keyval hk;
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- const u8 *mac = NULL;
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- int ret = 0;
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- int idx;
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-
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- memset(&hk, 0, sizeof(hk));
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-
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- switch (key->alg) {
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- case ALG_WEP:
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- hk.kv_type = ATH9K_CIPHER_WEP;
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- break;
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- case ALG_TKIP:
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- hk.kv_type = ATH9K_CIPHER_TKIP;
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- break;
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- case ALG_CCMP:
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- hk.kv_type = ATH9K_CIPHER_AES_CCM;
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- break;
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- default:
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- return -EOPNOTSUPP;
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- }
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-
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- hk.kv_len = key->keylen;
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- memcpy(hk.kv_val, key->key, key->keylen);
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-
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- if (!(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) {
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- /* For now, use the default keys for broadcast keys. This may
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- * need to change with virtual interfaces. */
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- idx = key->keyidx;
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- } else if (key->keyidx) {
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- if (WARN_ON(!sta))
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- return -EOPNOTSUPP;
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- mac = sta->addr;
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-
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- if (vif->type != NL80211_IFTYPE_AP) {
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- /* Only keyidx 0 should be used with unicast key, but
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- * allow this for client mode for now. */
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- idx = key->keyidx;
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- } else
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- return -EIO;
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- } else {
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- if (WARN_ON(!sta))
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- return -EOPNOTSUPP;
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- mac = sta->addr;
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-
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- if (key->alg == ALG_TKIP)
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- idx = ath_reserve_key_cache_slot_tkip(common);
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- else
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- idx = ath_reserve_key_cache_slot(common);
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- if (idx < 0)
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- return -ENOSPC; /* no free key cache entries */
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- }
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-
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- if (key->alg == ALG_TKIP)
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- ret = ath_setkey_tkip(common, idx, key->key, &hk, mac,
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- vif->type == NL80211_IFTYPE_AP);
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- else
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- ret = ath9k_hw_set_keycache_entry(ah, idx, &hk, mac);
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-
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- if (!ret)
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- return -EIO;
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-
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- set_bit(idx, common->keymap);
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- if (key->alg == ALG_TKIP) {
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- set_bit(idx + 64, common->keymap);
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- if (common->splitmic) {
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- set_bit(idx + 32, common->keymap);
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- set_bit(idx + 64 + 32, common->keymap);
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- }
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- }
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-
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- return idx;
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-}
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-
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-static void ath_key_delete(struct ath_common *common, struct ieee80211_key_conf *key)
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-{
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- struct ath_hw *ah = common->ah;
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-
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- ath9k_hw_keyreset(ah, key->hw_key_idx);
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- if (key->hw_key_idx < IEEE80211_WEP_NKID)
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- return;
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-
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- clear_bit(key->hw_key_idx, common->keymap);
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- if (key->alg != ALG_TKIP)
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- return;
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-
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- clear_bit(key->hw_key_idx + 64, common->keymap);
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- if (common->splitmic) {
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- ath9k_hw_keyreset(ah, key->hw_key_idx + 32);
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- clear_bit(key->hw_key_idx + 32, common->keymap);
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- clear_bit(key->hw_key_idx + 64 + 32, common->keymap);
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- }
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-}
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-
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static void ath9k_bss_assoc_info(struct ath_softc *sc,
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struct ieee80211_vif *vif,
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struct ieee80211_bss_conf *bss_conf)
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@@ -1814,7 +1586,7 @@ static int ath9k_set_key(struct ieee8021
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switch (cmd) {
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case SET_KEY:
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- ret = ath_key_config(common, vif, sta, key);
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+ ret = ath9k_cmn_key_config(common, vif, sta, key);
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if (ret >= 0) {
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key->hw_key_idx = ret;
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/* push IV and Michael MIC generation to stack */
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@@ -1827,7 +1599,7 @@ static int ath9k_set_key(struct ieee8021
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}
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break;
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case DISABLE_KEY:
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- ath_key_delete(common, key);
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+ ath9k_cmn_key_delete(common, key);
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break;
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default:
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ret = -EINVAL;
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