ath11k: Update tx descriptor search index properly

PATCH In review Karthikeyan Periyasamy 3 participants 5 messages Feb 4, 2021 – Feb 9, 2021 Qualcomm Atheros ATH11K wireless driver

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Karthikeyan Periyasamy

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2021-02-04 03:56 UTC #0 lore raw

PATCH v2 1/1 ath11k: Update tx descriptor search index properly

Tx descriptor search index field should be updated with hw peer id and not by AST Hash as per the HW/FW recommendation. Incorrect search index causes throughput degradation in all scenario for all the platforms. so updated the search index field with hw peer id, which is a common change applicable for all the platforms. Also no need of these configuration for non station type. seen 10% throughput increase in WDS traffic with this change.

Tested-on: IPQ8074 hw2.0 AHB WLAN.HK.2.4.0.1-01492-QCAHKSWPL_SILICONZ-1

Signed-off-by Karthikeyan Periyasamy <[email protected]>

---
v2:
- updated the commit message with more details

 drivers/net/wireless/ath/ath11k/core.h   | 1 +
 drivers/net/wireless/ath/ath11k/dp_rx.c  | 8 ++++++--
 drivers/net/wireless/ath/ath11k/dp_tx.c  | 1 +
 drivers/net/wireless/ath/ath11k/hal_tx.c | 2 ++
 drivers/net/wireless/ath/ath11k/hal_tx.h | 1 +
 drivers/net/wireless/ath/ath11k/peer.c   | 9 +++++++--
 drivers/net/wireless/ath/ath11k/peer.h   | 3 ++-
 7 files changed, 20 insertions(+), 5 deletions(-)

drivers/net/wireless/ath/ath11k/core.h +1 -0

index 9db375b..8d29845 100644
@@ -200,6 +200,7 @@ struct ath11k_vif {
 	u32 beacon_interval;
 	u32 dtim_period;
 	u16 ast_hash;
+	u16 ast_idx;
 	u16 tcl_metadata;
 	u8 hal_addr_search_flags;
 	u8 search_type;

drivers/net/wireless/ath/ath11k/dp_rx.c +6 -2

index 42328a0..2d90b80 100644
@@ -1652,6 +1652,7 @@ void ath11k_dp_htt_htc_t2h_msg_handler(struct ath11k_base *ab,
 	u8 mac_addr[ETH_ALEN];
 	u16 peer_mac_h16;
 	u16 ast_hash;
+	u16 hw_peer_id;
 
 	ath11k_dbg(ab, ATH11K_DBG_DP_HTT, "dp_htt rx msg type :0x%0x\n", type);

@@ -1672,7 +1673,7 @@ void ath11k_dp_htt_htc_t2h_msg_handler(struct ath11k_base *ab,
 					 resp->peer_map_ev.info1);
 		ath11k_dp_get_mac_addr(resp->peer_map_ev.mac_addr_l32,
 				       peer_mac_h16, mac_addr);
-		ath11k_peer_map_event(ab, vdev_id, peer_id, mac_addr, 0);
+		ath11k_peer_map_event(ab, vdev_id, peer_id, mac_addr, 0, 0);
 		break;
 	case HTT_T2H_MSG_TYPE_PEER_MAP2:
 		vdev_id = FIELD_GET(HTT_T2H_PEER_MAP_INFO_VDEV_ID,

@@ -1685,7 +1686,10 @@ void ath11k_dp_htt_htc_t2h_msg_handler(struct ath11k_base *ab,
 				       peer_mac_h16, mac_addr);
 		ast_hash = FIELD_GET(HTT_T2H_PEER_MAP_INFO2_AST_HASH_VAL,
 				     resp->peer_map_ev.info2);
-		ath11k_peer_map_event(ab, vdev_id, peer_id, mac_addr, ast_hash);
+		hw_peer_id = FIELD_GET(HTT_T2H_PEER_MAP_INFO1_HW_PEER_ID,
+				       resp->peer_map_ev.info1);
+		ath11k_peer_map_event(ab, vdev_id, peer_id, mac_addr, ast_hash,
+				      hw_peer_id);
 		break;
 	case HTT_T2H_MSG_TYPE_PEER_UNMAP:
 	case HTT_T2H_MSG_TYPE_PEER_UNMAP2:

drivers/net/wireless/ath/ath11k/dp_tx.c +1 -0

index 6a3fcea..1a0b9be 100644
@@ -165,6 +165,7 @@ int ath11k_dp_tx(struct ath11k *ar, struct ath11k_vif *arvif,
 	ti.pkt_offset = 0;
 	ti.lmac_id = ar->lmac_id;
 	ti.bss_ast_hash = arvif->ast_hash;
+	ti.bss_ast_idx = arvif->ast_idx;
 	ti.dscp_tid_tbl_idx = 0;
 
 	if (skb->ip_summed == CHECKSUM_PARTIAL &&

drivers/net/wireless/ath/ath11k/hal_tx.c +2 -0

index a755aa8..569e790 100644
@@ -71,6 +71,8 @@ void ath11k_hal_tx_cmd_desc_setup(struct ath11k_base *ab, void *cmd,
 	tcl_cmd->info3 = FIELD_PREP(HAL_TCL_DATA_CMD_INFO3_DSCP_TID_TABLE_IDX,
 				    ti->dscp_tid_tbl_idx) |
 			 FIELD_PREP(HAL_TCL_DATA_CMD_INFO3_SEARCH_INDEX,
+				    ti->bss_ast_idx) |
+			 FIELD_PREP(HAL_TCL_DATA_CMD_INFO3_CACHE_SET_NUM,
 				    ti->bss_ast_hash);
 	tcl_cmd->info4 = 0;
 }

drivers/net/wireless/ath/ath11k/hal_tx.h +1 -0

index d4760a2..c291e59 100644
@@ -29,6 +29,7 @@ struct hal_tx_info {
 	u32 flags1; /* %HAL_TCL_DATA_CMD_INFO2_ */
 	u16 addr_search_flags; /* %HAL_TCL_DATA_CMD_INFO0_ADDR(X/Y)_ */
 	u16 bss_ast_hash;
+	u16 bss_ast_idx;
 	u8 tid;
 	u8 search_type; /* %HAL_TX_ADDR_SEARCH_ */
 	u8 lmac_id;

drivers/net/wireless/ath/ath11k/peer.c +7 -2

index b69e7eb..f49abefa 100644
@@ -118,7 +118,7 @@ void ath11k_peer_unmap_event(struct ath11k_base *ab, u16 peer_id)
 }
 
 void ath11k_peer_map_event(struct ath11k_base *ab, u8 vdev_id, u16 peer_id,
-			   u8 *mac_addr, u16 ast_hash)
+			   u8 *mac_addr, u16 ast_hash, u16 hw_peer_id)
 {
 	struct ath11k_peer *peer;

@@ -132,6 +132,7 @@ void ath11k_peer_map_event(struct ath11k_base *ab, u8 vdev_id, u16 peer_id,
 		peer->vdev_id = vdev_id;
 		peer->peer_id = peer_id;
 		peer->ast_hash = ast_hash;
+		peer->hw_peer_id = hw_peer_id;
 		ether_addr_copy(peer->addr, mac_addr);
 		list_add(&peer->list, &ab->peers);
 		wake_up(&ab->peer_mapping_wq);

@@ -309,7 +310,11 @@ int ath11k_peer_create(struct ath11k *ar, struct ath11k_vif *arvif,
 
 	peer->pdev_idx = ar->pdev_idx;
 	peer->sta = sta;
-	arvif->ast_hash = peer->ast_hash;
+
+	if (arvif->vif->type == NL80211_IFTYPE_STATION) {
+		arvif->ast_hash = peer->ast_hash;
+		arvif->ast_idx = peer->hw_peer_id;
+	}
 
 	peer->sec_type = HAL_ENCRYPT_TYPE_OPEN;
 	peer->sec_type_grp = HAL_ENCRYPT_TYPE_OPEN;

drivers/net/wireless/ath/ath11k/peer.h +2 -1

index 8553ed0..619db00 100644
@@ -14,6 +14,7 @@ struct ath11k_peer {
 	int peer_id;
 	u16 ast_hash;
 	u8 pdev_idx;
+	u16 hw_peer_id;
 
 	/* protected by ab->data_lock */
 	struct ieee80211_key_conf *keys[WMI_MAX_KEY_INDEX + 1];

@@ -31,7 +32,7 @@ struct ath11k_peer {
 
 void ath11k_peer_unmap_event(struct ath11k_base *ab, u16 peer_id);
 void ath11k_peer_map_event(struct ath11k_base *ab, u8 vdev_id, u16 peer_id,
-			   u8 *mac_addr, u16 ast_hash);
+			   u8 *mac_addr, u16 ast_hash, u16 hw_peer_id);
 struct ath11k_peer *ath11k_peer_find(struct ath11k_base *ab, int vdev_id,
 				     const u8 *addr);
 struct ath11k_peer *ath11k_peer_find_by_addr(struct ath11k_base *ab,

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2.7.4


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Peter Oh

2021-02-04 06:10 UTC #1 lore raw

Quoted 11 lines · Karthikeyan Periyasamy

Tx descriptor search index field should be updated with hw peer id and not by AST Hash as per the HW/FW recommendation. Incorrect search index causes throughput degradation in all scenario for all the platforms. so updated the search index field with hw peer id, which is a common change applicable for all the platforms. Also no need of these configuration for non station type. seen 10% throughput increase in WDS traffic with this change.
Tested-on: IPQ8074 hw2.0 AHB WLAN.HK.2.4.0.1-01492-QCAHKSWPL_SILICONZ-1
Signed-off-by Karthikeyan Periyasamy <[email protected]>

Thank you for the details.

Peter

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[email protected]
http://lists.infradead.org/mailman/listinfo/ath11k

Kalle Valo

Reviewed-by Peter Oh

2021-02-09 07:23 UTC #2 lore raw

Quoted 9 lines · Peter Oh

Quoted 8 lines · Karthikeyan Periyasamy
Tx descriptor search index field should be updated with hw peer id and not by AST Hash as per the HW/FW recommendation. Incorrect search index causes throughput degradation in all scenario for all the platforms. so updated the search index field with hw peer id, which is a common change applicable for all the platforms. Also no need of these configuration for non station type. seen 10% throughput increase in WDS traffic with this change.

Quoted 5 lines

Quoted 3 lines
Tested-on: IPQ8074 hw2.0 AHB WLAN.HK.2.4.0.1-01492-QCAHKSWPL_SILICONZ-1
Signed-off-by Karthikeyan Periyasamy <[email protected]>
Thank you for the details.

BTW after you have reviewed the patch, and you think the patch is ok, you could reply with:

Reviewed-by Peter Oh <[email protected]>

Patchwork automatically picks up that and then it would be an indication for me that the patch is ready to be applied. I like the Reviewed-by tag a lot as then I can see that others have also reviewed the patch.

Signature · 8 lines

https://patchwork.kernel.org/project/linux-wireless/list/

https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches

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Kalle Valo

2021-02-09 07:23 UTC #3 lore raw

In reply to Karthikeyan Periyasamy

Quoted 8 lines · Karthikeyan Periyasamy

Tx descriptor search index field should be updated with hw peer id and not by AST Hash as per the HW/FW recommendation. Incorrect search index causes throughput degradation in all scenario for all the platforms. so updated the search index field with hw peer id, which is a common change applicable for all the platforms. Also no need of these configuration for non station type. seen 10% throughput increase in WDS traffic with this change.

Quoted 4 lines

Tested-on: IPQ8074 hw2.0 AHB WLAN.HK.2.4.0.1-01492-QCAHKSWPL_SILICONZ-1
Signed-off-by Karthikeyan Periyasamy <[email protected]>
Signed-off-by Kalle Valo <[email protected]>

Patch applied to ath-next branch of ath.git, thanks.

4b965be536ee ath11k: Update tx descriptor search index properly

Signature · 9 lines

https://patchwork.kernel.org/project/linux-wireless/patch/[email protected]/

https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches


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Kalle Valo

2021-02-09 07:24 UTC #4 lore raw

In reply to Karthikeyan Periyasamy

Quoted 8 lines · Karthikeyan Periyasamy

Tx descriptor search index field should be updated with hw peer id and not by AST Hash as per the HW/FW recommendation. Incorrect search index causes throughput degradation in all scenario for all the platforms. so updated the search index field with hw peer id, which is a common change applicable for all the platforms. Also no need of these configuration for non station type. seen 10% throughput increase in WDS traffic with this change.

Quoted 4 lines

Tested-on: IPQ8074 hw2.0 AHB WLAN.HK.2.4.0.1-01492-QCAHKSWPL_SILICONZ-1
Signed-off-by Karthikeyan Periyasamy <[email protected]>
Signed-off-by Kalle Valo <[email protected]>

Patch applied to ath-next branch of ath.git, thanks.

4b965be536ee ath11k: Update tx descriptor search index properly

Signature · 3 lines

https://patchwork.kernel.org/project/linux-wireless/patch/[email protected]/

https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches