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iwlwifi: mvm: support more GTK rekeying algorithms

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add and use new API version for GTK rekeying. This will allow our
firmware to do GTK rekeying for more algorithms (GCMP 128, GCMP 256,
SAE).

Signed-off-by: Nathan Errera <nathan.errera@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20200930161256.be16c51fef3c.If4fac0fbc5bede4679b5f875b60c4e9a6ea7ca7c@changeid
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
This commit is contained in:
Nathan Errera 2020-09-30 16:31:17 +03:00 committed by Luca Coelho
parent 0cd1ad2d7f
commit 2a42aea795
3 changed files with 33 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

29
drivers/net/wireless/intel/iwlwifi/mvm/d3.c
View File

@ -81,8 +81,11 @@ void iwl_mvm_set_rekey_data(struct ieee80211_hw *hw,
mutex_lock(&mvm->mutex);
memcpy(mvmvif->rekey_data.kek, data->kek, NL80211_KEK_LEN);
memcpy(mvmvif->rekey_data.kck, data->kck, NL80211_KCK_LEN);
mvmvif->rekey_data.kek_len = data->kek_len;
mvmvif->rekey_data.kck_len = data->kck_len;
memcpy(mvmvif->rekey_data.kek, data->kek, data->kek_len);
memcpy(mvmvif->rekey_data.kck, data->kck, data->kck_len);
mvmvif->rekey_data.akm = data->akm & 0xFF;
mvmvif->rekey_data.replay_ctr =
cpu_to_le64(be64_to_cpup((__be64 *)data->replay_ctr));
mvmvif->rekey_data.valid = true;
@ -157,6 +160,7 @@ static const u8 *iwl_mvm_find_max_pn(struct ieee80211_key_conf *key,
struct wowlan_key_data {
struct iwl_wowlan_rsc_tsc_params_cmd *rsc_tsc;
struct iwl_wowlan_tkip_params_cmd *tkip;
struct iwl_wowlan_kek_kck_material_cmd_v3 *kek_kck_cmd;
bool error, use_rsc_tsc, use_tkip, configure_keys;
int wep_key_idx;
};
@ -233,7 +237,12 @@ static void iwl_mvm_wowlan_program_keys(struct ieee80211_hw *hw,
default:
data->error = true;
return;
case WLAN_CIPHER_SUITE_BIP_GMAC_256:
case WLAN_CIPHER_SUITE_BIP_GMAC_128:
data->kek_kck_cmd->igtk_cipher = cpu_to_le32(STA_KEY_FLG_GCMP);
return;
case WLAN_CIPHER_SUITE_AES_CMAC:
data->kek_kck_cmd->igtk_cipher = cpu_to_le32(STA_KEY_FLG_CCM);
/*
* Ignore CMAC keys -- the WoWLAN firmware doesn't support them
* but we also shouldn't abort suspend due to that. It does have
@ -271,6 +280,8 @@ static void iwl_mvm_wowlan_program_keys(struct ieee80211_hw *hw,
data->rsc_tsc->params.all_tsc_rsc.tkip.multicast_rsc;
rx_p1ks = data->tkip->rx_multi;
rx_mic_key = data->tkip->mic_keys.rx_mcast;
data->kek_kck_cmd->gtk_cipher =
cpu_to_le32(STA_KEY_FLG_TKIP);
}
/*
@ -315,6 +326,10 @@ static void iwl_mvm_wowlan_program_keys(struct ieee80211_hw *hw,
} else {
aes_sc =
data->rsc_tsc->params.all_tsc_rsc.aes.multicast_rsc;
data->kek_kck_cmd->gtk_cipher =
key->cipher == WLAN_CIPHER_SUITE_CCMP ?
cpu_to_le32(STA_KEY_FLG_CCM) :
cpu_to_le32(STA_KEY_FLG_GCMP);
}
/*
@ -749,6 +764,7 @@ static int iwl_mvm_wowlan_config_key_params(struct iwl_mvm *mvm,
.use_rsc_tsc = false,
.tkip = &tkip_cmd,
.use_tkip = false,
.kek_kck_cmd = &kek_kck_cmd,
};
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
int ret;
@ -852,12 +868,13 @@ static int iwl_mvm_wowlan_config_key_params(struct iwl_mvm *mvm,
memset(&kek_kck_cmd, 0, sizeof(kek_kck_cmd));
memcpy(kek_kck_cmd.kck, mvmvif->rekey_data.kck,
NL80211_KCK_LEN);
kek_kck_cmd.kck_len = cpu_to_le16(NL80211_KCK_LEN);
mvmvif->rekey_data.kck_len);
kek_kck_cmd.kck_len = cpu_to_le16(mvmvif->rekey_data.kck_len);
memcpy(kek_kck_cmd.kek, mvmvif->rekey_data.kek,
NL80211_KEK_LEN);
kek_kck_cmd.kek_len = cpu_to_le16(NL80211_KEK_LEN);
mvmvif->rekey_data.kek_len);
kek_kck_cmd.kek_len = cpu_to_le16(mvmvif->rekey_data.kek_len);
kek_kck_cmd.replay_ctr = mvmvif->rekey_data.replay_ctr;
kek_kck_cmd.akm = cpu_to_le32(mvmvif->rekey_data.akm);
ret = iwl_mvm_send_cmd_pdu(mvm,
WOWLAN_KEK_KCK_MATERIAL, cmd_flags,

5
drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c
View File

@ -666,6 +666,11 @@ int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT))
hw->wiphy->features |= NL80211_FEATURE_WFA_TPC_IE_IN_PROBES;
if (iwl_fw_lookup_cmd_ver(mvm->fw, IWL_ALWAYS_LONG_GROUP,
WOWLAN_KEK_KCK_MATERIAL,
IWL_FW_CMD_VER_UNKNOWN) == 3)
hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK;
if (fw_has_api(&mvm->fw->ucode_capa,
IWL_UCODE_TLV_API_SCAN_TSF_REPORT)) {
wiphy_ext_feature_set(hw->wiphy,

6
drivers/net/wireless/intel/iwlwifi/mvm/mvm.h
View File

@ -416,7 +416,11 @@ struct iwl_mvm_vif {
#ifdef CONFIG_PM
/* WoWLAN GTK rekey data */
struct {
u8 kck[NL80211_KCK_LEN], kek[NL80211_KEK_LEN];
u8 kck[NL80211_KCK_EXT_LEN];
u8 kek[NL80211_KEK_EXT_LEN];
size_t kek_len;
size_t kck_len;
u32 akm;
__le64 replay_ctr;
bool valid;
} rekey_data;