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ath/ath9k: Replace common->splitmic with a flag 

Replace common->splitmic with ATH_CRYPT_CAP_MIC_COMBINED flag.

splitmic has to be used when the ATH_CRYPT_CAP_MIC_COMBINED capability flag is
not set.

Signed-off-by: Bruno Randolf <br1@einfach.org>
Acked-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Bruno Randolf 2010-09-08 16:04:54 +09:00 committed by John W. Linville
parent d8878f83cf
commit 117675d06a
4 changed files with 16 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/net/wireless/ath/ath.h
View File

@ -78,6 +78,7 @@ enum ath_crypt_caps {
ATH_CRYPT_CAP_CIPHER_AESCCM = BIT(3),
ATH_CRYPT_CAP_CIPHER_CKIP = BIT(4),
ATH_CRYPT_CAP_CIPHER_TKIP = BIT(5),
ATH_CRYPT_CAP_MIC_COMBINED = BIT(6),
};
struct ath_keyval {
@ -150,7 +151,6 @@ struct ath_common {
u32 keymax;
DECLARE_BITMAP(keymap, ATH_KEYMAX);
DECLARE_BITMAP(tkip_keymap, ATH_KEYMAX);
u8 splitmic;
enum ath_crypt_caps crypt_caps;
struct ath_regulatory regulatory;

12
drivers/net/wireless/ath/ath9k/common.c
View File

@ -174,7 +174,7 @@ static int ath_setkey_tkip(struct ath_common *common, u16 keyix, const u8 *key,
}
return ath9k_hw_set_keycache_entry(ah, keyix, hk, addr);
}
if (!common->splitmic) {
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));
@ -205,7 +205,7 @@ static int ath_reserve_key_cache_slot_tkip(struct ath_common *common)
if (test_bit(i, common->keymap) ||
test_bit(i + 64, common->keymap))
continue; /* At least one part of TKIP key allocated */
if (common->splitmic &&
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 */
@ -225,7 +225,7 @@ static int ath_reserve_key_cache_slot(struct ath_common *common,
return ath_reserve_key_cache_slot_tkip(common);
/* First, try to find slots that would not be available for TKIP. */
if (common->splitmic) {
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) ||
@ -266,7 +266,7 @@ static int ath_reserve_key_cache_slot(struct ath_common *common,
* TKIP will not be used. */
if (i >= 64 && i < 64 + IEEE80211_WEP_NKID)
continue;
if (common->splitmic) {
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)
@ -374,7 +374,7 @@ int ath9k_cmn_key_config(struct ath_common *common,
set_bit(idx + 64, common->keymap);
set_bit(idx, common->tkip_keymap);
set_bit(idx + 64, common->tkip_keymap);
if (common->splitmic) {
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);
@ -407,7 +407,7 @@ void ath9k_cmn_key_delete(struct ath_common *common,
clear_bit(key->hw_key_idx, common->tkip_keymap);
clear_bit(key->hw_key_idx + 64, common->tkip_keymap);
if (common->splitmic) {
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);

4
drivers/net/wireless/ath/ath9k/init.c
View File

@ -389,8 +389,8 @@ static void ath9k_init_crypto(struct ath_softc *sc)
* With split mic keys the number of stations is limited
* to 27 otherwise 59.
*/
if (!(sc->sc_ah->misc_mode & AR_PCU_MIC_NEW_LOC_ENA))
common->splitmic = 1;
if (sc->sc_ah->misc_mode & AR_PCU_MIC_NEW_LOC_ENA)
common->crypt_caps |= ATH_CRYPT_CAP_MIC_COMBINED;
}
static int ath9k_init_btcoex(struct ath_softc *sc)

14
drivers/net/wireless/ath/key.c
View File

@ -201,7 +201,7 @@ bool ath_hw_set_keycache_entry(struct ath_common *common, u16 entry,
/* Write MAC address for the entry */
(void) ath_hw_keysetmac(common, entry, mac);
if (common->splitmic == 0) {
if (common->crypt_caps & ATH_CRYPT_CAP_MIC_COMBINED) {
/*
* TKIP uses two key cache entries:
* Michael MIC TX/RX keys in the same key cache entry
@ -327,7 +327,7 @@ static int ath_setkey_tkip(struct ath_common *common, u16 keyix, const u8 *key,
}
return ath_hw_set_keycache_entry(common, keyix, hk, addr);
}
if (!common->splitmic) {
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));
@ -358,7 +358,7 @@ static int ath_reserve_key_cache_slot_tkip(struct ath_common *common)
if (test_bit(i, common->keymap) ||
test_bit(i + 64, common->keymap))
continue; /* At least one part of TKIP key allocated */
if (common->splitmic &&
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 */
@ -378,7 +378,7 @@ static int ath_reserve_key_cache_slot(struct ath_common *common,
return ath_reserve_key_cache_slot_tkip(common);
/* First, try to find slots that would not be available for TKIP. */
if (common->splitmic) {
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) ||
@ -419,7 +419,7 @@ static int ath_reserve_key_cache_slot(struct ath_common *common,
* TKIP will not be used. */
if (i >= 64 && i < 64 + IEEE80211_WEP_NKID)
continue;
if (common->splitmic) {
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)
@ -526,7 +526,7 @@ int ath_key_config(struct ath_common *common,
set_bit(idx + 64, common->keymap);
set_bit(idx, common->tkip_keymap);
set_bit(idx + 64, common->tkip_keymap);
if (common->splitmic) {
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);
@ -556,7 +556,7 @@ void ath_key_delete(struct ath_common *common, struct ieee80211_key_conf *key)
clear_bit(key->hw_key_idx, common->tkip_keymap);
clear_bit(key->hw_key_idx + 64, common->tkip_keymap);
if (common->splitmic) {
if (!(common->crypt_caps & ATH_CRYPT_CAP_MIC_COMBINED)) {
ath_hw_keyreset(common, key->hw_key_idx + 32);
clear_bit(key->hw_key_idx + 32, common->keymap);
clear_bit(key->hw_key_idx + 64 + 32, common->keymap);