ath9k: Use common ath key management functions

Use key management functions which have been moved to ath/key.c and remove
ath9k copies of these functions and other now unused definitions.

Signed-off-by: Bruno Randolf <br1@einfach.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 0 insertions, 270 deletions

diff --git a/drivers/net/wireless/ath/ath9k/common.c b/drivers/net/wireless/ath/ath9k/common.c
index 2db24eb5f0e..f43a2d98421 100644
--- a/drivers/net/wireless/ath/ath9k/common.c
+++ b/drivers/net/wireless/ath/ath9k/common.c
@@ -148,276 +148,6 @@ struct ath9k_channel *ath9k_cmn_get_curchannel(struct ieee80211_hw *hw,
 }
 EXPORT_SYMBOL(ath9k_cmn_get_curchannel);
 
-static int ath_setkey_tkip(struct ath_common *common, u16 keyix, const u8 *key,
-			   struct ath9k_keyval *hk, const u8 *addr,
-			   bool authenticator)
-{
-	struct ath_hw *ah = common->ah;
-	const u8 *key_rxmic;
-	const u8 *key_txmic;
-
-	key_txmic = key + NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY;
-	key_rxmic = key + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY;
-
-	if (addr == NULL) {
-		/*
-		 * Group key installation - only two key cache entries are used
-		 * regardless of splitmic capability since group key is only
-		 * used either for TX or RX.
-		 */
-		if (authenticator) {
-			memcpy(hk->kv_mic, key_txmic, sizeof(hk->kv_mic));
-			memcpy(hk->kv_txmic, key_txmic, sizeof(hk->kv_mic));
-		} else {
-			memcpy(hk->kv_mic, key_rxmic, sizeof(hk->kv_mic));
-			memcpy(hk->kv_txmic, key_rxmic, sizeof(hk->kv_mic));
-		}
-		return ath9k_hw_set_keycache_entry(ah, keyix, hk, addr);
-	}
-	if (common->crypt_caps & ATH_CRYPT_CAP_MIC_COMBINED) {
-		/* TX and RX keys share the same key cache entry. */
-		memcpy(hk->kv_mic, key_rxmic, sizeof(hk->kv_mic));
-		memcpy(hk->kv_txmic, key_txmic, sizeof(hk->kv_txmic));
-		return ath9k_hw_set_keycache_entry(ah, keyix, hk, addr);
-	}
-
-	/* Separate key cache entries for TX and RX */
-
-	/* TX key goes at first index, RX key at +32. */
-	memcpy(hk->kv_mic, key_txmic, sizeof(hk->kv_mic));
-	if (!ath9k_hw_set_keycache_entry(ah, keyix, hk, NULL)) {
-		/* TX MIC entry failed. No need to proceed further */
-		ath_print(common, ATH_DBG_FATAL,
-			  "Setting TX MIC Key Failed\n");
-		return 0;
-	}
-
-	memcpy(hk->kv_mic, key_rxmic, sizeof(hk->kv_mic));
-	/* XXX delete tx key on failure? */
-	return ath9k_hw_set_keycache_entry(ah, keyix + 32, hk, addr);
-}
-
-static int ath_reserve_key_cache_slot_tkip(struct ath_common *common)
-{
-	int i;
-
-	for (i = IEEE80211_WEP_NKID; i < common->keymax / 2; i++) {
-		if (test_bit(i, common->keymap) ||
-		    test_bit(i + 64, common->keymap))
-			continue; /* At least one part of TKIP key allocated */
-		if (!(common->crypt_caps & ATH_CRYPT_CAP_MIC_COMBINED) &&
-		    (test_bit(i + 32, common->keymap) ||
-		     test_bit(i + 64 + 32, common->keymap)))
-			continue; /* At least one part of TKIP key allocated */
-
-		/* Found a free slot for a TKIP key */
-		return i;
-	}
-	return -1;
-}
-
-static int ath_reserve_key_cache_slot(struct ath_common *common,
-				      u32 cipher)
-{
-	int i;
-
-	if (cipher == WLAN_CIPHER_SUITE_TKIP)
-		return ath_reserve_key_cache_slot_tkip(common);
-
-	/* First, try to find slots that would not be available for TKIP. */
-	if (!(common->crypt_caps & ATH_CRYPT_CAP_MIC_COMBINED)) {
-		for (i = IEEE80211_WEP_NKID; i < common->keymax / 4; i++) {
-			if (!test_bit(i, common->keymap) &&
-			    (test_bit(i + 32, common->keymap) ||
-			     test_bit(i + 64, common->keymap) ||
-			     test_bit(i + 64 + 32, common->keymap)))
-				return i;
-			if (!test_bit(i + 32, common->keymap) &&
-			    (test_bit(i, common->keymap) ||
-			     test_bit(i + 64, common->keymap) ||
-			     test_bit(i + 64 + 32, common->keymap)))
-				return i + 32;
-			if (!test_bit(i + 64, common->keymap) &&
-			    (test_bit(i , common->keymap) ||
-			     test_bit(i + 32, common->keymap) ||
-			     test_bit(i + 64 + 32, common->keymap)))
-				return i + 64;
-			if (!test_bit(i + 64 + 32, common->keymap) &&
-			    (test_bit(i, common->keymap) ||
-			     test_bit(i + 32, common->keymap) ||
-			     test_bit(i + 64, common->keymap)))
-				return i + 64 + 32;
-		}
-	} else {
-		for (i = IEEE80211_WEP_NKID; i < common->keymax / 2; i++) {
-			if (!test_bit(i, common->keymap) &&
-			    test_bit(i + 64, common->keymap))
-				return i;
-			if (test_bit(i, common->keymap) &&
-			    !test_bit(i + 64, common->keymap))
-				return i + 64;
-		}
-	}
-
-	/* No partially used TKIP slots, pick any available slot */
-	for (i = IEEE80211_WEP_NKID; i < common->keymax; i++) {
-		/* Do not allow slots that could be needed for TKIP group keys
-		 * to be used. This limitation could be removed if we know that
-		 * TKIP will not be used. */
-		if (i >= 64 && i < 64 + IEEE80211_WEP_NKID)
-			continue;
-		if (!(common->crypt_caps & ATH_CRYPT_CAP_MIC_COMBINED)) {
-			if (i >= 32 && i < 32 + IEEE80211_WEP_NKID)
-				continue;
-			if (i >= 64 + 32 && i < 64 + 32 + IEEE80211_WEP_NKID)
-				continue;
-		}
-
-		if (!test_bit(i, common->keymap))
-			return i; /* Found a free slot for a key */
-	}
-
-	/* No free slot found */
-	return -1;
-}
-
-/*
- * Configure encryption in the HW.
- */
-int ath9k_cmn_key_config(struct ath_common *common,
-			 struct ieee80211_vif *vif,
-			 struct ieee80211_sta *sta,
-			 struct ieee80211_key_conf *key)
-{
-	struct ath_hw *ah = common->ah;
-	struct ath9k_keyval hk;
-	const u8 *mac = NULL;
-	u8 gmac[ETH_ALEN];
-	int ret = 0;
-	int idx;
-
-	memset(&hk, 0, sizeof(hk));
-
-	switch (key->cipher) {
-	case WLAN_CIPHER_SUITE_WEP40:
-	case WLAN_CIPHER_SUITE_WEP104:
-		hk.kv_type = ATH9K_CIPHER_WEP;
-		break;
-	case WLAN_CIPHER_SUITE_TKIP:
-		hk.kv_type = ATH9K_CIPHER_TKIP;
-		break;
-	case WLAN_CIPHER_SUITE_CCMP:
-		hk.kv_type = ATH9K_CIPHER_AES_CCM;
-		break;
-	default:
-		return -EOPNOTSUPP;
-	}
-
-	hk.kv_len = key->keylen;
-	memcpy(hk.kv_val, key->key, key->keylen);
-
-	if (!(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) {
-		switch (vif->type) {
-		case NL80211_IFTYPE_AP:
-			memcpy(gmac, vif->addr, ETH_ALEN);
-			gmac[0] |= 0x01;
-			mac = gmac;
-			idx = ath_reserve_key_cache_slot(common, key->cipher);
-			break;
-		case NL80211_IFTYPE_ADHOC:
-			if (!sta) {
-				idx = key->keyidx;
-				break;
-			}
-			memcpy(gmac, sta->addr, ETH_ALEN);
-			gmac[0] |= 0x01;
-			mac = gmac;
-			idx = ath_reserve_key_cache_slot(common, key->cipher);
-			break;
-		default:
-			idx = key->keyidx;
-			break;
-		}
-	} else if (key->keyidx) {
-		if (WARN_ON(!sta))
-			return -EOPNOTSUPP;
-		mac = sta->addr;
-
-		if (vif->type != NL80211_IFTYPE_AP) {
-			/* Only keyidx 0 should be used with unicast key, but
-			 * allow this for client mode for now. */
-			idx = key->keyidx;
-		} else
-			return -EIO;
-	} else {
-		if (WARN_ON(!sta))
-			return -EOPNOTSUPP;
-		mac = sta->addr;
-
-		idx = ath_reserve_key_cache_slot(common, key->cipher);
-	}
-
-	if (idx < 0)
-		return -ENOSPC; /* no free key cache entries */
-
-	if (key->cipher == WLAN_CIPHER_SUITE_TKIP)
-		ret = ath_setkey_tkip(common, idx, key->key, &hk, mac,
-				      vif->type == NL80211_IFTYPE_AP);
-	else
-		ret = ath9k_hw_set_keycache_entry(ah, idx, &hk, mac);
-
-	if (!ret)
-		return -EIO;
-
-	set_bit(idx, common->keymap);
-	if (key->cipher == WLAN_CIPHER_SUITE_TKIP) {
-		set_bit(idx + 64, common->keymap);
-		set_bit(idx, common->tkip_keymap);
-		set_bit(idx + 64, common->tkip_keymap);
-		if (!(common->crypt_caps & ATH_CRYPT_CAP_MIC_COMBINED)) {
-			set_bit(idx + 32, common->keymap);
-			set_bit(idx + 64 + 32, common->keymap);
-			set_bit(idx + 32, common->tkip_keymap);
-			set_bit(idx + 64 + 32, common->tkip_keymap);
-		}
-	}
-
-	return idx;
-}
-EXPORT_SYMBOL(ath9k_cmn_key_config);
-
-/*
- * Delete Key.
- */
-void ath9k_cmn_key_delete(struct ath_common *common,
-			  struct ieee80211_key_conf *key)
-{
-	struct ath_hw *ah = common->ah;
-
-	ath9k_hw_keyreset(ah, key->hw_key_idx);
-	if (key->hw_key_idx < IEEE80211_WEP_NKID)
-		return;
-
-	clear_bit(key->hw_key_idx, common->keymap);
-	if (key->cipher != WLAN_CIPHER_SUITE_TKIP)
-		return;
-
-	clear_bit(key->hw_key_idx + 64, common->keymap);
-
-	clear_bit(key->hw_key_idx, common->tkip_keymap);
-	clear_bit(key->hw_key_idx + 64, common->tkip_keymap);
-
-	if (!(common->crypt_caps & ATH_CRYPT_CAP_MIC_COMBINED)) {
-		ath9k_hw_keyreset(ah, key->hw_key_idx + 32);
-		clear_bit(key->hw_key_idx + 32, common->keymap);
-		clear_bit(key->hw_key_idx + 64 + 32, common->keymap);
-
-		clear_bit(key->hw_key_idx + 32, common->tkip_keymap);
-		clear_bit(key->hw_key_idx + 64 + 32, common->tkip_keymap);
-	}
-}
-EXPORT_SYMBOL(ath9k_cmn_key_delete);
-
 int ath9k_cmn_count_streams(unsigned int chainmask, int max)
 {
 	int streams = 0;