diff mbox series

[01/13] wifi: iwlwifi: mvm: Offload RLC/SMPS functionality to firmware

Message ID 20240808232017.45da23be1f65.I0d46db82dd990a82e8a66876fe2f5310bc9513be@changeid (mailing list archive)
State Accepted
Delegated to: Johannes Berg
Headers show
Series wifi: iwlwifi: updates - 29-08-08 | expand

Commit Message

Miri Korenblit Aug. 8, 2024, 8:22 p.m. UTC 
From: Daniel Gabay <daniel.gabay@intel.com>

Currently, the driver handles SMPS decisions by tracking AP
capabilities, BT coexistence changes, sending necessary SMPS
frames to the AP, and updating firmware with RX chain info
using the RLC_CONFIG_CMD.

Starting with version 3 of the RLC_CONFIG_CMD, the firmware
takes over this responsibility. It now tracks SMPS, sends
frames, and configures the RLC.

In this patch:
1. Stop sending RLC_CONFIG_CMD when firmware supports RLC
   offload (version 3), as rlc.rx_chain_info is not needed by
   firmware, and no other field in the cmd is used.
2. Prevent the driver from forwarding any SMPS requests to
   mac80211, i.e., the driver should not transmit SMPS frames
   to the AP as firmware handles that.
3. Set NL80211_FEATURE_DYNAMIC_SMPS and NL80211_FEATURE_STATIC_SMPS
   conditionally based on RLC version.

Signed-off-by: Daniel Gabay <daniel.gabay@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
---
 drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c | 9 +++++++--
 drivers/net/wireless/intel/iwlwifi/mvm/mvm.h      | 7 +++++++
 drivers/net/wireless/intel/iwlwifi/mvm/ops.c      | 6 ++++++
 drivers/net/wireless/intel/iwlwifi/mvm/phy-ctxt.c | 6 +++++-
 drivers/net/wireless/intel/iwlwifi/mvm/utils.c    | 4 ++++
 5 files changed, 29 insertions(+), 3 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c
index d6f4caa939bd..af892c8291d4 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c
@@ -635,10 +635,15 @@  int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
 			       NL80211_FEATURE_LOW_PRIORITY_SCAN |
 			       NL80211_FEATURE_P2P_GO_OPPPS |
 			       NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
-			       NL80211_FEATURE_DYNAMIC_SMPS |
-			       NL80211_FEATURE_STATIC_SMPS |
 			       NL80211_FEATURE_SUPPORTS_WMM_ADMISSION;
 
+	/* when firmware supports RLC/SMPS offload, do not set these
+	 * driver features, since it's no longer supported by driver.
+	 */
+	if (!iwl_mvm_has_rlc_offload(mvm))
+		hw->wiphy->features |= NL80211_FEATURE_STATIC_SMPS |
+				       NL80211_FEATURE_DYNAMIC_SMPS;
+
 	if (fw_has_capa(&mvm->fw->ucode_capa,
 			IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT))
 		hw->wiphy->features |= NL80211_FEATURE_TX_POWER_INSERTION;
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h b/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h
index bd754b8a71fc..4cacaa7b398e 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h
@@ -1768,6 +1768,13 @@  static inline u8 iwl_mvm_mac_ac_to_tx_fifo(struct iwl_mvm *mvm,
 	return iwl_mvm_ac_to_tx_fifo[ac];
 }
 
+static inline bool iwl_mvm_has_rlc_offload(struct iwl_mvm *mvm)
+{
+	return iwl_fw_lookup_cmd_ver(mvm->fw,
+				     WIDE_ID(DATA_PATH_GROUP, RLC_CONFIG_CMD),
+				     0) >= 3;
+}
+
 struct iwl_rate_info {
 	u8 plcp;	/* uCode API:  IWL_RATE_6M_PLCP, etc. */
 	u8 plcp_siso;	/* uCode API:  IWL_RATE_SISO_6M_PLCP, etc. */
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/ops.c b/drivers/net/wireless/intel/iwlwifi/mvm/ops.c
index 8896d9792feb..be20c8e3a389 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/ops.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/ops.c
@@ -261,6 +261,12 @@  static void iwl_mvm_rx_thermal_dual_chain_req(struct iwl_mvm *mvm,
 	struct iwl_rx_packet *pkt = rxb_addr(rxb);
 	struct iwl_thermal_dual_chain_request *req = (void *)pkt->data;
 
+	/* firmware is expected to handle that in RLC offload mode */
+	if (IWL_FW_CHECK(mvm, iwl_mvm_has_rlc_offload(mvm),
+			 "Got THERMAL_DUAL_CHAIN_REQUEST (0x%x) in RLC offload mode\n",
+			 req->event))
+		return;
+
 	/*
 	 * We could pass it to the iterator data, but also need to remember
 	 * it for new interfaces that are added while in this state.
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/phy-ctxt.c b/drivers/net/wireless/intel/iwlwifi/mvm/phy-ctxt.c
index ce264b386029..7cab5373c8ae 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/phy-ctxt.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/phy-ctxt.c
@@ -159,7 +159,11 @@  int iwl_mvm_phy_send_rlc(struct iwl_mvm *mvm, struct iwl_mvm_phy_ctxt *ctxt,
 		.phy_id = cpu_to_le32(ctxt->id),
 	};
 
-	if (ctxt->rlc_disabled)
+	/* From version 3, RLC is offloaded to firmware, so the driver no
+	 * longer needs to send cmd.rlc, note that we are not using any
+	 * other fields in the command - don't send it.
+	 */
+	if (iwl_mvm_has_rlc_offload(mvm) || ctxt->rlc_disabled)
 		return 0;
 
 	if (iwl_fw_lookup_cmd_ver(mvm->fw, WIDE_ID(DATA_PATH_GROUP,
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/utils.c b/drivers/net/wireless/intel/iwlwifi/mvm/utils.c
index 0e5fa8374103..edcc6e2cb76a 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/utils.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/utils.c
@@ -297,6 +297,10 @@  void iwl_mvm_update_smps(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 	if (vif->type != NL80211_IFTYPE_STATION)
 		return;
 
+	/* SMPS is handled by firmware */
+	if (iwl_mvm_has_rlc_offload(mvm))
+		return;
+
 	mvmvif = iwl_mvm_vif_from_mac80211(vif);
 
 	if (WARN_ON_ONCE(!mvmvif->link[link_id]))