From: Simon Horman <horms@kernel.org>
To: Erni Sri Satya Vennela <ernis@linux.microsoft.com>
Cc: kys@microsoft.com, haiyangz@microsoft.com, wei.liu@kernel.org,
decui@microsoft.com, longli@microsoft.com, andrew+netdev@lunn.ch,
davem@davemloft.net, edumazet@google.com, kuba@kernel.org,
pabeni@redhat.com, kotaranov@microsoft.com,
shradhagupta@linux.microsoft.com, shirazsaleem@microsoft.com,
dipayanroy@linux.microsoft.com, yury.norov@gmail.com,
kees@kernel.org, ssengar@linux.microsoft.com,
gargaditya@linux.microsoft.com, linux-hyperv@vger.kernel.org,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-rdma@vger.kernel.org
Subject: Re: [PATCH net-next v4] net: mana: Expose hardware diagnostic info via debugfs
Date: Fri, 20 Mar 2026 09:55:53 +0000 [thread overview]
Message-ID: <20260320095553.GD1753385@horms.kernel.org> (raw)
In-Reply-To: <20260319070926.1459515-1-ernis@linux.microsoft.com>
On Thu, Mar 19, 2026 at 12:09:13AM -0700, Erni Sri Satya Vennela wrote:
> Add debugfs entries to expose hardware configuration and diagnostic
> information that aids in debugging driver initialization and runtime
> operations without adding noise to dmesg.
>
> The debugfs directory creation and removal for each PCI device is
> integrated into mana_gd_setup() and mana_gd_cleanup_device()
> respectively, so that all callers (probe, remove, suspend, resume,
> shutdown) share a single code path.
>
> Device-level entries (under /sys/kernel/debug/mana/<slot>/):
> - num_msix_usable, max_num_queues: Max resources from hardware
> - gdma_protocol_ver, pf_cap_flags1: VF version negotiation results
> - num_vports, bm_hostmode: Device configuration
>
> Per-vPort entries (under /sys/kernel/debug/mana/<slot>/vportN/):
> - port_handle: Hardware vPort handle
> - max_sq, max_rq: Max queues from vPort config
> - indir_table_sz: Indirection table size
> - steer_rx, steer_rss, steer_update_tab, steer_cqe_coalescing:
> Last applied steering configuration parameters
>
> Signed-off-by: Erni Sri Satya Vennela <ernis@linux.microsoft.com>
> ---
> Changes in v4:
> * Rebase and fix conflicts.
> Changes in v3:
> * Rename mana_gd_cleanup to mana_gd_cleanup_device.
> * Add creation of debugfs entries in mana_gd_setup.
> * Add removal of debugfs entries in mana_gd_cleanup_device.
> * Remove bm_hostmode and num_vports from debugfs in mana_remove itself,
> because "ac" gets freed before debugfs_remove_recursive, to avoid
> Use-After-Free error.
> * Add "goto out:" in mana_cfg_vport_steering to avoid populating apc
> values when resp.hdr.status is not NULL.
Thanks for the updates.
Reviewed-by: Simon Horman <horms@kernel.org>
next prev parent reply other threads:[~2026-03-20 9:56 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-19 7:09 [PATCH net-next v4] net: mana: Expose hardware diagnostic info via debugfs Erni Sri Satya Vennela
2026-03-20 9:55 ` Simon Horman [this message]
2026-03-24 0:44 ` Jakub Kicinski
2026-03-24 16:20 ` Erni Sri Satya Vennela
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