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Message-ID: <20231211192540.GR5817@kernel.org>
Date: Mon, 11 Dec 2023 19:25:40 +0000
From: Simon Horman <horms@...nel.org>
To: edward.cree@....com
Cc: linux-net-drivers@....com, davem@...emloft.net, kuba@...nel.org,
pabeni@...hat.com, edumazet@...gle.com,
Edward Cree <ecree.xilinx@...il.com>, netdev@...r.kernel.org,
habetsm.xilinx@...il.com,
Jonathan Cooper <jonathan.s.cooper@....com>
Subject: Re: [PATCH net-next 6/7] sfc: add debugfs entries for filter table
status
On Mon, Dec 11, 2023 at 05:18:31PM +0000, edward.cree@....com wrote:
> From: Edward Cree <ecree.xilinx@...il.com>
>
> Filter table management is complicated by the possibility of overflow
> kicking us into a promiscuous fallback for either unicast or multicast.
> Expose the internal flags that drive this.
> Since the table state (efx->filter_state) has a separate, shorter
> lifetime than struct efx_nic, put its debugfs nodes in a subdirectory
> (efx->filter_state->debug_dir) so that they can be cleaned up easily
> before the filter_state is freed.
>
> Reviewed-by: Jonathan Cooper <jonathan.s.cooper@....com>
> Signed-off-by: Edward Cree <ecree.xilinx@...il.com>
...
> index 4ff6586116ee..a4ab45082c8f 100644
> --- a/drivers/net/ethernet/sfc/mcdi_filters.c
> +++ b/drivers/net/ethernet/sfc/mcdi_filters.c
> @@ -1348,6 +1348,20 @@ int efx_mcdi_filter_table_probe(struct efx_nic *efx, bool multicast_chaining)
> INIT_LIST_HEAD(&table->vlan_list);
> init_rwsem(&table->lock);
>
> +#ifdef CONFIG_DEBUG_FS
> + table->debug_dir = debugfs_create_dir("filters", efx->debug_dir);
> + debugfs_create_bool("uc_promisc", 0444, table->debug_dir,
> + &table->uc_promisc);
> + debugfs_create_bool("mc_promisc", 0444, table->debug_dir,
> + &table->mc_promisc);
> + debugfs_create_bool("mc_promisc_last", 0444, table->debug_dir,
> + &table->mc_promisc_last);
> + debugfs_create_bool("mc_overflow", 0444, table->debug_dir,
> + &table->mc_overflow);
> + debugfs_create_bool("mc_chaining", 0444, table->debug_dir,
> + &table->mc_chaining);
> +#endif
> +
> efx->filter_state = table;
>
> return 0;
> @@ -1518,6 +1532,10 @@ void efx_mcdi_filter_table_remove(struct efx_nic *efx)
> return;
>
> vfree(table->entry);
> +#ifdef CONFIG_DEBUG_FS
> + /* Remove debugfs entries pointing into @table */
> + debugfs_remove_recursive(table->debug_dir);
> +#endif
> kfree(table);
> }
>
Hi Edward,
I think debugfs.h needs to be included so that debugfs_*() are defined.
...
--
pw-bot: changes-requested
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