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iwlwifi: mvm: d3: support GCMP ciphers

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We really should support GCMP ciphers (both sizes) since
all the handling is identical to CCMP, except for the one
case where the key material is copied.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20200930161256.ec44673fae83.I8a9232600b99e27213eb9ea69bf46e8d25d7f260@changeid
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
This commit is contained in:
Johannes Berg
2020-09-30 16:31:18 +03:00
committed by Luca Coelho
parent 2a42aea795
commit c7f996eb89
1 changed files with 18 additions and 0 deletions
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18
drivers/net/wireless/intel/iwlwifi/mvm/d3.c
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@@ -313,6 +313,8 @@ static void iwl_mvm_wowlan_program_keys(struct ieee80211_hw *hw,
data->use_rsc_tsc = true;
break;
case WLAN_CIPHER_SUITE_CCMP:
case WLAN_CIPHER_SUITE_GCMP:
case WLAN_CIPHER_SUITE_GCMP_256:
if (sta) {
u64 pn64;
@@ -1405,6 +1407,8 @@ static void iwl_mvm_set_key_rx_seq(struct iwl_mvm *mvm,
switch (key->cipher) {
case WLAN_CIPHER_SUITE_CCMP:
case WLAN_CIPHER_SUITE_GCMP:
case WLAN_CIPHER_SUITE_GCMP_256:
iwl_mvm_set_aes_rx_seq(mvm, rsc->aes.multicast_rsc, NULL, key);
break;
case WLAN_CIPHER_SUITE_TKIP:
@@ -1441,6 +1445,8 @@ static void iwl_mvm_d3_update_keys(struct ieee80211_hw *hw,
/* ignore WEP completely, nothing to do */
return;
case WLAN_CIPHER_SUITE_CCMP:
case WLAN_CIPHER_SUITE_GCMP:
case WLAN_CIPHER_SUITE_GCMP_256:
case WLAN_CIPHER_SUITE_TKIP:
/* we support these */
break;
@@ -1466,6 +1472,8 @@ static void iwl_mvm_d3_update_keys(struct ieee80211_hw *hw,
switch (key->cipher) {
case WLAN_CIPHER_SUITE_CCMP:
case WLAN_CIPHER_SUITE_GCMP:
case WLAN_CIPHER_SUITE_GCMP_256:
iwl_mvm_set_aes_rx_seq(data->mvm, sc->aes.unicast_rsc,
sta, key);
atomic64_set(&key->tx_pn, le64_to_cpu(sc->aes.tsc.pn));
@@ -1548,11 +1556,21 @@ static bool iwl_mvm_setup_connection_keep(struct iwl_mvm *mvm,
switch (gtkdata.cipher) {
case WLAN_CIPHER_SUITE_CCMP:
case WLAN_CIPHER_SUITE_GCMP:
BUILD_BUG_ON(WLAN_KEY_LEN_CCMP != WLAN_KEY_LEN_GCMP);
BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_CCMP);
conf.conf.keylen = WLAN_KEY_LEN_CCMP;
memcpy(conf.conf.key, status->gtk[0].key,
WLAN_KEY_LEN_CCMP);
break;
case WLAN_CIPHER_SUITE_GCMP_256:
BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_GCMP_256);
conf.conf.keylen = WLAN_KEY_LEN_GCMP_256;
memcpy(conf.conf.key, status->gtk[0].key,
WLAN_KEY_LEN_GCMP_256);
break;
case WLAN_CIPHER_SUITE_TKIP:
BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_TKIP);
conf.conf.keylen = WLAN_KEY_LEN_TKIP;
memcpy(conf.conf.key, status->gtk[0].key, 16);
/* leave TX MIC key zeroed, we don't use it anyway */