From: Stanislav Fomichev <sdf.kernel@gmail.com>
To: netdev@vger.kernel.org
Cc: davem@davemloft.net, edumazet@google.com, kuba@kernel.org,
pabeni@redhat.com, andrew+netdev@lunn.ch, edumazet@kernel.org,
horms@kernel.org, corbet@lwn.net, skhan@linuxfoundation.org,
rdunlap@infradead.org, michael.chan@broadcom.com,
pavan.chebbi@broadcom.com, saeedm@nvidia.com, tariqt@nvidia.com,
mbloch@nvidia.com, alexanderduyck@fb.com, kernel-team@meta.com,
sdf@fomichev.me, dimitri.daskalakis1@gmail.com,
almasrymina@google.com, dtatulea@nvidia.com,
bobbyeshleman@meta.com, asml.silence@gmail.com,
daniel@iogearbox.net, razor@blackwall.org, leitao@debian.org,
linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-rdma@vger.kernel.org, linux-kselftest@vger.kernel.org,
leon@kernel.org
Subject: [PATCH net-next v3 7/9] net/mlx5e: lift the netmem TX frag size limit
Date: Thu, 5 Nov 2026 14:20:56 -0800 [thread overview]
Message-ID: <20261105222058.944293-8-sdf@fomichev.me> (raw)
In-Reply-To: <20261105222058.944293-1-sdf@fomichev.me>
TX data segments have a 32-bit byte count, so devmem TX frags don't
need a size limit. Set netmem_tx_max_frag_size to U32_MAX.
Signed-off-by: Stanislav Fomichev <sdf@fomichev.me>
---
drivers/net/ethernet/mellanox/mlx5/core/en_main.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
index c3c2c5720c6f..28ba04bd5f4a 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
@@ -5967,6 +5967,7 @@ static void mlx5e_build_nic_netdev(struct net_device *netdev)
netdev->priv_flags |= IFF_UNICAST_FLT;
netdev->netmem_tx = NETMEM_TX_DMA;
+ netdev->netmem_tx_max_frag_size = U32_MAX;
netif_set_tso_max_size(netdev, GSO_MAX_SIZE);
mlx5e_set_xdp_feature(priv);
--
2.53.0-Meta
next prev parent reply other threads:[~2026-11-05 22:21 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-11-05 22:20 [PATCH net-next v3 0/9] net: devmem: size TX net_iovs from the dmabuf layout Stanislav Fomichev
2026-11-05 22:20 ` [PATCH net-next v3 1/9] bnxt_en: let the stack segment GSO skbs with too many frags Stanislav Fomichev
2026-11-05 22:20 ` [PATCH net-next v3 2/9] net: devmem: charge the frag length to TX skb truesize Stanislav Fomichev
2026-11-05 22:20 ` [PATCH net-next v3 3/9] net: devmem: use niov_shift in net_devmem_get_niov_at() Stanislav Fomichev
2026-11-05 22:20 ` [PATCH net-next v3 4/9] net: devmem: add a per-device netmem TX frag size limit Stanislav Fomichev
2026-11-05 22:20 ` [PATCH net-next v3 5/9] bnxt_en: set the netmem TX frag size limit to 32KB Stanislav Fomichev
2026-11-05 22:20 ` [PATCH net-next v3 6/9] eth: fbnic: " Stanislav Fomichev
2026-11-05 22:20 ` Stanislav Fomichev [this message]
2026-11-05 22:20 ` [PATCH net-next v3 8/9] net: devmem: size TX net_iovs from the dmabuf sg table Stanislav Fomichev
2026-11-05 22:20 ` [PATCH net-next v3 9/9] selftests: drv-net: devmem: TX from a hugepage-backed dmabuf Stanislav Fomichev
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