[PATCH ath-next v2 3/3] wifi: ath12k: Advertise encapsulation/decapsulation offload support to mac80211

[Nithyanantham Paramasivam]

Currently, the mac80211 layer handles construction and parsing
of 802.11 headers during packet transmission and reception.
Offloading encapsulation and decapsulation to hardware can
significantly enhance performance. Check the service bit to determine
if the firmware supports Ethernet offload. If supported, advertise the
capability to mac80211 to bypass software-based 802.11 header
processing.

Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.4.1-00217-QCAHKSWPL_SILICONZ-1
Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0.c5-00481-QCAHMTSWPL_V1.0_V2.0_SILICONZ-3

Signed-off-by: Nithyanantham Paramasivam <nithyanantham.paramasivam at oss.qualcomm.com>
---
 drivers/net/wireless/ath/ath12k/mac.c | 5 +++++
 drivers/net/wireless/ath/ath12k/wmi.h | 1 +
 2 files changed, 6 insertions(+)

diff --git a/drivers/net/wireless/ath/ath12k/mac.c b/drivers/net/wireless/ath/ath12k/mac.c
index 3a33eccc0d1d..93ae76daa549 100644
--- a/drivers/net/wireless/ath/ath12k/mac.c
+++ b/drivers/net/wireless/ath/ath12k/mac.c
@@ -13726,6 +13726,11 @@ static int ath12k_mac_hw_register(struct ath12k_hw *ah)
 	ieee80211_hw_set(hw, REPORTS_LOW_ACK);
 	ieee80211_hw_set(hw, NO_VIRTUAL_MONITOR);
 
+	if (test_bit(WMI_TLV_SERVICE_ETH_OFFLOAD, ar->wmi->wmi_ab->svc_map)) {
+		ieee80211_hw_set(hw, SUPPORTS_TX_ENCAP_OFFLOAD);
+		ieee80211_hw_set(hw, SUPPORTS_RX_DECAP_OFFLOAD);
+	}
+
 	if (cap->nss_ratio_enabled)
 		ieee80211_hw_set(hw, SUPPORTS_VHT_EXT_NSS_BW);
 
diff --git a/drivers/net/wireless/ath/ath12k/wmi.h b/drivers/net/wireless/ath/ath12k/wmi.h
index ed9b4324a7b8..f1283b8444f9 100644
--- a/drivers/net/wireless/ath/ath12k/wmi.h
+++ b/drivers/net/wireless/ath/ath12k/wmi.h
@@ -2254,6 +2254,7 @@ enum wmi_tlv_service {
 	WMI_TLV_SERVICE_WMSK_COMPACTION_RX_TLVS = 361,
 
 	WMI_TLV_SERVICE_PEER_METADATA_V1A_V1B_SUPPORT = 365,
+	WMI_TLV_SERVICE_ETH_OFFLOAD = 461,
 
 	WMI_MAX_EXT2_SERVICE,
 };
-- 
2.17.1