From: Saeed Mahameed <saeed@kernel.org>
To: "David S. Miller" <davem@davemloft.net>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
Eric Dumazet <edumazet@google.com>
Cc: Saeed Mahameed <saeedm@nvidia.com>,
netdev@vger.kernel.org, Tariq Toukan <tariqt@nvidia.com>,
Maxim Mikityanskiy <maximmi@nvidia.com>
Subject: [net 3/9] net/mlx5e: Fix the value of MLX5E_MAX_RQ_NUM_MTTS
Date: Thu, 28 Jul 2022 13:46:34 -0700 [thread overview]
Message-ID: <20220728204640.139990-4-saeed@kernel.org> (raw)
In-Reply-To: <20220728204640.139990-1-saeed@kernel.org>
From: Maxim Mikityanskiy <maximmi@nvidia.com>
MLX5E_MAX_RQ_NUM_MTTS should be the maximum value, so that
MLX5_MTT_OCTW(MLX5E_MAX_RQ_NUM_MTTS) fits into u16. The current value of
1 << 17 results in MLX5_MTT_OCTW(1 << 17) = 1 << 16, which doesn't fit
into u16. This commit replaces it with the maximum value that still
fits u16.
Fixes: 73281b78a37a ("net/mlx5e: Derive Striding RQ size from MTU")
Signed-off-by: Maxim Mikityanskiy <maximmi@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
---
drivers/net/ethernet/mellanox/mlx5/core/en.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en.h b/drivers/net/ethernet/mellanox/mlx5/core/en.h
index b6c15efe92ad..f794ffaf1e04 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en.h
@@ -109,7 +109,7 @@ struct page_pool;
#define MLX5E_REQUIRED_WQE_MTTS (MLX5_ALIGN_MTTS(MLX5_MPWRQ_PAGES_PER_WQE + 1))
#define MLX5E_REQUIRED_MTTS(wqes) (wqes * MLX5E_REQUIRED_WQE_MTTS)
#define MLX5E_MAX_RQ_NUM_MTTS \
- ((1 << 16) * 2) /* So that MLX5_MTT_OCTW(num_mtts) fits into u16 */
+ (ALIGN_DOWN(U16_MAX, 4) * 2) /* So that MLX5_MTT_OCTW(num_mtts) fits into u16 */
#define MLX5E_ORDER2_MAX_PACKET_MTU (order_base_2(10 * 1024))
#define MLX5E_PARAMS_MAXIMUM_LOG_RQ_SIZE_MPW \
(ilog2(MLX5E_MAX_RQ_NUM_MTTS / MLX5E_REQUIRED_WQE_MTTS))
--
2.37.1
next prev parent reply other threads:[~2022-07-28 20:47 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-07-28 20:46 [pull request][net 0/9] mlx5 fixes 2022-07-28 Saeed Mahameed
2022-07-28 20:46 ` [net 1/9] net/mlx5e: Remove WARN_ON when trying to offload an unsupported TLS cipher/version Saeed Mahameed
2022-07-30 4:50 ` patchwork-bot+netdevbpf
2022-07-28 20:46 ` [net 2/9] net/mlx5e: TC, Fix post_act to not match on in_port metadata Saeed Mahameed
2022-07-28 20:46 ` Saeed Mahameed [this message]
2022-07-28 20:46 ` [net 4/9] net/mlx5e: xsk: Account for XSK RQ UMRs when calculating ICOSQ size Saeed Mahameed
2022-07-28 20:46 ` [net 5/9] net/mlx5e: Fix calculations related to max MPWQE size Saeed Mahameed
2022-07-28 20:46 ` [net 6/9] net/mlx5e: Modify slow path rules to go to slow fdb Saeed Mahameed
2022-07-28 20:46 ` [net 7/9] net/mlx5: Adjust log_max_qp to be 18 at most Saeed Mahameed
2022-07-28 20:46 ` [net 8/9] net/mlx5: DR, Fix SMFS steering info dump format Saeed Mahameed
2022-07-28 20:46 ` [net 9/9] net/mlx5: Fix driver use of uninitialized timeout Saeed Mahameed
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20220728204640.139990-4-saeed@kernel.org \
--to=saeed@kernel.org \
--cc=davem@davemloft.net \
--cc=edumazet@google.com \
--cc=kuba@kernel.org \
--cc=maximmi@nvidia.com \
--cc=netdev@vger.kernel.org \
--cc=pabeni@redhat.com \
--cc=saeedm@nvidia.com \
--cc=tariqt@nvidia.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).