Re: [PATCH net-next v5] eth: fbnic: Add PCIe hardware statistics

[Joe Damato <jdamato@fastly.com>]

On Mon, Nov 11, 2024 at 11:57:15AM -0800, Sanman Pradhan wrote:
> Add PCIe hardware statistics support to the fbnic driver. These stats
> provide insight into PCIe transaction performance and error conditions.
> 
> Which includes, read/write and completion TLP counts and DWORD counts and
> debug counters for tag, completion credit and NP credit exhaustion
> 
> The stats are exposed via debugfs and can be used to monitor PCIe
> performance and debug PCIe issues.
> 
> Signed-off-by: Sanman Pradhan <sanman.p211993@gmail.com>
> ---
> v5:
> 	- Add missing fbnic_dbg_init, fbnic_dbg_exit, fbnic_dbg_fbd_init and fbnic_dbg_fbd_exit functions
> 	- Add missing entry in fbnic.h
> 	- Tested on 1-NIC 2-Host system
> 		- Test Logs:
> 				Without ping <remote_host>
> 					# cat /sys/kernel/debug/fbnic/0000\:01\:00.0/pcie_stats
> 					ob_rd_tlp: 88724
> 					ob_rd_dword: 1363273
> 					ob_wr_tlp: 980410
> 					ob_wr_dword: 105006453
> 					ob_cpl_tlp: 98665
> 					ob_cpl_dword: 1363273
> 					ob_rd_no_tag: 0
> 					ob_rd_no_cpl_cred: 0
> 					ob_rd_no_np_cred: 0
> 				With ping <remote_host>
> 					# cat /sys/kernel/debug/fbnic/0000\:01\:00.0/pcie_stats
> 					ob_rd_tlp: 114081
> 					ob_rd_dword: 1902295
> 					ob_wr_tlp: 1098457
> 					ob_wr_dword: 112936622
> 					ob_cpl_tlp: 128409
> 					ob_cpl_dword: 1902295
> 					ob_rd_no_tag: 0
> 					ob_rd_no_cpl_cred: 0
> 					ob_rd_no_np_cred: 0
> v4:
> 	- https://patchwork.kernel.org/project/netdevbpf/patch/20241109025905.1531196-1-sanman.p211993@gmail.com/
> 	- Fix indentations
> 	- Adding missing updates for previous versions
> v3:
> 	- https://patchwork.kernel.org/project/netdevbpf/patch/20241108204640.3165724-1-sanman.p211993@gmail.com/
> 	- Moved PCIe stats to debugfs
> v2:
> 	- https://patchwork.kernel.org/project/netdevbpf/patch/20241107020555.321245-1-sanman.p211993@gmail.com/
> 	- Removed unnecessary code blocks
> 	- Rephrased the commit message
> v1:
> 	- https://patchwork.kernel.org/project/netdevbpf/patch/20241106002625.1857904-1-sanman.p211993@gmail.com/
> ---
>  .../device_drivers/ethernet/meta/fbnic.rst    |  26 ++++
>  drivers/net/ethernet/meta/fbnic/Makefile      |   1 +
>  drivers/net/ethernet/meta/fbnic/fbnic.h       |   6 +
>  drivers/net/ethernet/meta/fbnic/fbnic_csr.h   |  37 ++++++
>  .../net/ethernet/meta/fbnic/fbnic_debugfs.c   |  68 +++++++++++
>  .../net/ethernet/meta/fbnic/fbnic_devlink.c   |   4 +
>  .../net/ethernet/meta/fbnic/fbnic_hw_stats.c  | 114 ++++++++++++++++++
>  .../net/ethernet/meta/fbnic/fbnic_hw_stats.h  |  12 ++
>  .../net/ethernet/meta/fbnic/fbnic_netdev.c    |   3 +
>  drivers/net/ethernet/meta/fbnic/fbnic_pci.c   |   8 +-
>  10 files changed, 278 insertions(+), 1 deletion(-)
>  create mode 100644 drivers/net/ethernet/meta/fbnic/fbnic_debugfs.c

Just FYI this patch does not seem to apply to net-next/main. Did you
rebase?