[04/10] iwlwifi: add vendor specific capabilities for some RFs

Commit Message

Luca Coelho Oct. 17, 2021, 8:43 a.m. UTC

From: Johannes Berg <[e-mail]>

On some RFs we want to advertise vendor specific capabilities to
indicate support for improved beamforming rates and/or on 160 MHz,
some APs where Intel has collaborated with the vendor will use it
to improve behaviour. Add these elements where relevant, i.e. for
HR and GF RFs.

Signed-off-by: Johannes Berg <[e-mail]>
Signed-off-by: Luca Coelho <[e-mail]>
---
 .../net/wireless/intel/iwlwifi/iwl-nvm-parse.c  | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

Patch

diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-nvm-parse.c b/drivers/net/wireless/intel/iwlwifi/iwl-nvm-parse.c
index 475f951d4b1e..f470f9aea50f 100644
--- a/drivers/net/wireless/intel/iwlwifi/iwl-nvm-parse.c
+++ b/drivers/net/wireless/intel/iwlwifi/iwl-nvm-parse.c
@@ -534,6 +534,17 @@  static void iwl_init_vht_hw_capab(struct iwl_trans *trans,
 		cpu_to_le16(IEEE80211_VHT_EXT_NSS_BW_CAPABLE);
 }
 
+static const u8 iwl_vendor_caps[] = {
+	0xdd,			/* vendor element */
+	0x06,			/* length */
+	0x00, 0x17, 0x35,	/* Intel OUI */
+	0x08,			/* type (Intel Capabilities) */
+	/* followed by 16 bits of capabilities */
+#define IWL_VENDOR_CAP_IMPROVED_BF_FDBK_HE	BIT(0)
+	IWL_VENDOR_CAP_IMPROVED_BF_FDBK_HE,
+	0x00
+};
+
 static const struct ieee80211_sband_iftype_data iwl_he_capa[] = {
 	{
 		.types_mask = BIT(NL80211_IFTYPE_STATION),
@@ -781,6 +792,12 @@  iwl_nvm_fixup_sband_iftd(struct iwl_trans *trans,
 	if (fw_has_capa(&fw->ucode_capa, IWL_UCODE_TLV_CAPA_BROADCAST_TWT))
 		iftype_data->he_cap.he_cap_elem.mac_cap_info[2] |=
 			IEEE80211_HE_MAC_CAP2_BCAST_TWT;
+
+	if (trans->trans_cfg->device_family == IWL_DEVICE_FAMILY_22000 &&
+	    !is_ap) {
+		iftype_data->vendor_elems.data = iwl_vendor_caps;
+		iftype_data->vendor_elems.len = ARRAY_SIZE(iwl_vendor_caps);
+	}
 }
 
 static void iwl_init_he_hw_capab(struct iwl_trans *trans,