From: Vadim Fedorenko <vadim.fedorenko@linux.dev>
To: Jakub Kicinski <kuba@kernel.org>, Saeed Mahameed <saeed@kernel.org>
Cc: "David S. Miller" <davem@davemloft.net>,
Paolo Abeni <pabeni@redhat.com>,
Eric Dumazet <edumazet@google.com>,
Saeed Mahameed <saeedm@nvidia.com>,
netdev@vger.kernel.org, Tariq Toukan <tariqt@nvidia.com>,
Rahul Rameshbabu <rrameshbabu@nvidia.com>
Subject: Re: [net 07/10] net/mlx5e: Correct SKB room check to use all room in the fifo
Date: Fri, 24 Feb 2023 12:18:32 +0000 [thread overview]
Message-ID: <28ccadd6-7c79-2a18-315e-3eabb14db80e@linux.dev> (raw)
In-Reply-To: <20230223163836.546bbc76@kernel.org>
On 24/02/2023 00:38, Jakub Kicinski wrote:
> On Thu, 23 Feb 2023 14:52:44 -0800 Saeed Mahameed wrote:
>> From: Rahul Rameshbabu <rrameshbabu@nvidia.com>
>>
>> Previous check was comparing against the fifo mask. The mask is size of the
>> fifo (power of two) minus one, so a less than or equal comparator should be
>> used for checking if the fifo has room for the SKB.
>>
>> Fixes: 19b43a432e3e ("net/mlx5e: Extend SKB room check to include PTP-SQ")
>
> How big is the fifo? Not utilizing a single entry is not really worth
> calling a bug if the fifo has at least 32 entries..
AFAIK, it has the same size that any other SQ queue, up to 8192 entries
for now.
next prev parent reply other threads:[~2023-02-24 12:18 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-02-23 22:52 [pull request][net 00/10] mlx5 fixes 2023-02-23 Saeed Mahameed
2023-02-23 22:52 ` [net 01/10] net/mlx5: Remove NULL check before dev_{put, hold} Saeed Mahameed
2023-02-23 22:52 ` [net 02/10] net/mlx5e: TC, fix return value check in mlx5e_tc_act_stats_create() Saeed Mahameed
2023-02-23 22:52 ` [net 03/10] net/mlx5e: XDP, Allow growing tail for XDP multi buffer Saeed Mahameed
2023-02-24 0:34 ` Jakub Kicinski
2023-02-24 18:07 ` Saeed Mahameed
2023-04-08 11:24 ` Maxim Mikityanskiy
2023-02-23 22:52 ` [net 04/10] net/mlx5e: xsk: Set napi_id to support busy polling on XSK RQ Saeed Mahameed
2023-02-24 0:35 ` Jakub Kicinski
2023-02-23 22:52 ` [net 05/10] mlx5: fix skb leak while fifo resync and push Saeed Mahameed
2023-02-23 22:52 ` [net 06/10] mlx5: fix possible ptp queue fifo use-after-free Saeed Mahameed
2023-02-23 22:52 ` [net 07/10] net/mlx5e: Correct SKB room check to use all room in the fifo Saeed Mahameed
2023-02-24 0:38 ` Jakub Kicinski
2023-02-24 12:18 ` Vadim Fedorenko [this message]
2023-02-24 18:03 ` Saeed Mahameed
2023-02-24 21:58 ` David Laight
2023-02-23 22:52 ` [net 08/10] net/mlx5: ECPF, wait for VF pages only after disabling host PFs Saeed Mahameed
2023-02-23 22:52 ` [net 09/10] net/mlx5e: Verify flow_source cap before using it Saeed Mahameed
2023-02-23 22:52 ` [net 10/10] net/mlx5: Geneve, Fix handling of Geneve object id as error code Saeed Mahameed
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