This is a note to let you know that I've just added the patch titled
wifi: iwlwifi: mvm: add support for Extra EHT LTF
to the 6.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
wifi-iwlwifi-mvm-add-support-for-extra-eht-ltf.patch
and it can be found in the queue-6.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 119a2f7b886e2a916cd26780b18526248344ff9c
Author: Gregory Greenman <gregory.greenman@xxxxxxxxx>
Date: Tue Jun 13 15:57:19 2023 +0300
wifi: iwlwifi: mvm: add support for Extra EHT LTF
[ Upstream commit 18c0ffb404db2093b6afdc8ae15f18ba3975e1ed ]
Add support for Extra EHT LTF defined in 9.4.2.313
EHT Capabilities element.
Signed-off-by: Gregory Greenman <gregory.greenman@xxxxxxxxx>
Link: https://lore.kernel.org/r/20230613155501.de019d7cc174.I806f0f6042b89274192701a60b4f7900822db666@changeid
Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx>
Stable-dep-of: f91295987576 ("wifi: iwlwifi: mvm: correctly access HE/EHT sband capa")
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/net/wireless/intel/iwlwifi/fw/api/rs.h b/drivers/net/wireless/intel/iwlwifi/fw/api/rs.h
index c9a48fc5fac88..a1a272433b09b 100644
--- a/drivers/net/wireless/intel/iwlwifi/fw/api/rs.h
+++ b/drivers/net/wireless/intel/iwlwifi/fw/api/rs.h
@@ -21,6 +21,7 @@
* @IWL_TLC_MNG_CFG_FLAGS_HE_DCM_NSS_2_MSK: enable HE Dual Carrier Modulation
* for BPSK (MCS 0) with 2 spatial
* streams
+ * @IWL_TLC_MNG_CFG_FLAGS_EHT_EXTRA_LTF_MSK: enable support for EHT extra LTF
*/
enum iwl_tlc_mng_cfg_flags {
IWL_TLC_MNG_CFG_FLAGS_STBC_MSK = BIT(0),
@@ -28,6 +29,7 @@ enum iwl_tlc_mng_cfg_flags {
IWL_TLC_MNG_CFG_FLAGS_HE_STBC_160MHZ_MSK = BIT(2),
IWL_TLC_MNG_CFG_FLAGS_HE_DCM_NSS_1_MSK = BIT(3),
IWL_TLC_MNG_CFG_FLAGS_HE_DCM_NSS_2_MSK = BIT(4),
+ IWL_TLC_MNG_CFG_FLAGS_EHT_EXTRA_LTF_MSK = BIT(6),
};
/**
diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-nvm-parse.c b/drivers/net/wireless/intel/iwlwifi/iwl-nvm-parse.c
index 7dcb1c3ab7282..be0eb69f2248a 100644
--- a/drivers/net/wireless/intel/iwlwifi/iwl-nvm-parse.c
+++ b/drivers/net/wireless/intel/iwlwifi/iwl-nvm-parse.c
@@ -975,6 +975,8 @@ iwl_nvm_fixup_sband_iftd(struct iwl_trans *trans,
iftype_data->eht_cap.eht_cap_elem.phy_cap_info[6] &=
~(IEEE80211_EHT_PHY_CAP6_MCS15_SUPP_MASK |
IEEE80211_EHT_PHY_CAP6_EHT_DUP_6GHZ_SUPP);
+ iftype_data->eht_cap.eht_cap_elem.phy_cap_info[5] |=
+ IEEE80211_EHT_PHY_CAP5_SUPP_EXTRA_EHT_LTF;
}
if (fw_has_capa(&fw->ucode_capa, IWL_UCODE_TLV_CAPA_BROADCAST_TWT))
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/rs-fw.c b/drivers/net/wireless/intel/iwlwifi/mvm/rs-fw.c
index f72d1ca3cfedc..8a5341c37aa21 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/rs-fw.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/rs-fw.c
@@ -591,6 +591,21 @@ void iwl_mvm_rs_fw_rate_init(struct iwl_mvm *mvm,
int cmd_ver;
int ret;
+ /* Enable external EHT LTF only for GL device and if there's
+ * mutual support by AP and client
+ */
+ if (CSR_HW_REV_TYPE(mvm->trans->hw_rev) == IWL_CFG_MAC_TYPE_GL &&
+ sband->iftype_data->eht_cap.has_eht &&
+ sband->iftype_data->eht_cap.eht_cap_elem.phy_cap_info[5] &
+ IEEE80211_EHT_PHY_CAP5_SUPP_EXTRA_EHT_LTF &&
+ link_sta->eht_cap.has_eht &&
+ link_sta->eht_cap.eht_cap_elem.phy_cap_info[5] &
+ IEEE80211_EHT_PHY_CAP5_SUPP_EXTRA_EHT_LTF) {
+ IWL_DEBUG_RATE(mvm, "Set support for Extra EHT LTF\n");
+ cfg_cmd.flags |=
+ cpu_to_le16(IWL_TLC_MNG_CFG_FLAGS_EHT_EXTRA_LTF_MSK);
+ }
+
rcu_read_lock();
mvm_link_sta = rcu_dereference(mvmsta->link[link_id]);
if (WARN_ON_ONCE(!mvm_link_sta)) {
diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h
index c4cf296e7eafe..141c0cf65f2d9 100644
--- a/include/linux/ieee80211.h
+++ b/include/linux/ieee80211.h
@@ -2856,6 +2856,7 @@ ieee80211_he_spr_size(const u8 *he_spr_ie)
/* Maximum number of supported EHT LTF is split */
#define IEEE80211_EHT_PHY_CAP5_MAX_NUM_SUPP_EHT_LTF_MASK 0xc0
+#define IEEE80211_EHT_PHY_CAP5_SUPP_EXTRA_EHT_LTF 0x40
#define IEEE80211_EHT_PHY_CAP6_MAX_NUM_SUPP_EHT_LTF_MASK 0x07
#define IEEE80211_EHT_PHY_CAP6_MCS15_SUPP_MASK 0x78
