[PATCH] wifi: ath12k: Add support for link specific datapath stats

[Jeff Johnson]

On 1/10/2025 12:59 PM, Balamurugan Mahalingam wrote:
> Add support to record the number of frames enqueued, hardware
> descriptor type, encapsulation/encryption types used, frames
> dropped and completed. This is useful for understanding the
> datapath performance and tune the peak throughput.
> 
> The link specific stats can be viewed through the below debugfs file
> 
> cat /sys/kernel/debug/ieee80211/phy0/netdev:wlan1/link_stats
> link[0] Tx Unicast Frames Enqueued  = 9
> link[0] Tx Broadcast Frames Enqueued = 78689
> link[0] Tx Frames Completed = 78698
> link[0] Tx Frames Dropped = 0
> link[0] Tx Frame descriptor Encap Type =  raw:0 native wifi:78698 ethernet:0
> link[0] Tx Frame descriptor Encrypt Type =  0:78698 1:0 2:0 3:0 4:0 5:0 6:0 7:0 8:0 9:0 10:0 11:0
> link[0] Tx Frame descriptor Type = buffer:78698 extension:0
> ------------------------------------------------------
> link[1] Tx Unicast Frames Enqueued  = 0
> link[1] Tx Broadcast Frames Enqueued = 78689
> link[1] Tx Frames Completed = 78689
> link[1] Tx Frames Dropped = 0
> link[1] Tx Frame descriptor Encap Type =  raw:0 native wifi:78689 ethernet:0
> link[1] Tx Frame descriptor Encrypt Type =  0:78689 1:0 2:0 3:0 4:0 5:0 6:0 7:0 8:0 9:0 10:0 11:0
> link[1] Tx Frame descriptor Type = buffer:78689 extension:0
> ------------------------------------------------------
> 
> Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.3.1-00173-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: Balamurugan Mahalingam <quic_bmahalin at quicinc.com>
> ---
> 
> Depends-on : 
> [PATCH 0/2] wifi: ath12k: Add support for MLO Multicast Handling
> Link: https://lore.kernel.org/all/20250109184932.1593157-1-quic_bmahalin@quicinc.com/ 

The dependent patch still applies cleanly to ath/main and is now in pending.
However this patch doesn't apply cleanly on top of that, so please rebase.

* Applying 20250110_quic_bmahalin_wifi_ath12k_add_support_for_link_specific_datapath_stats.mbx 
Applying: wifi: ath12k: Add support for link specific datapath stats
Using index info to reconstruct a base tree...
M       drivers/net/wireless/ath/ath12k/core.h
M       drivers/net/wireless/ath/ath12k/dp.h
M       drivers/net/wireless/ath/ath12k/dp_tx.c
M       drivers/net/wireless/ath/ath12k/mac.c
Falling back to patching base and 3-way merge...
Auto-merging drivers/net/wireless/ath/ath12k/mac.c
CONFLICT (content): Merge conflict in drivers/net/wireless/ath/ath12k/mac.c
Auto-merging drivers/net/wireless/ath/ath12k/dp_tx.c
Auto-merging drivers/net/wireless/ath/ath12k/dp.h
Auto-merging drivers/net/wireless/ath/ath12k/core.h
Recorded preimage for 'drivers/net/wireless/ath/ath12k/mac.c'
error: Failed to merge in the changes.
Patch failed at 0001 wifi: ath12k: Add support for link specific datapath stats