From: Shenwei Wang <shenwei.wang@nxp.com>
To: Wei Fang <wei.fang@nxp.com>, Andrew Lunn <andrew+netdev@lunn.ch>,
"David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
Alexei Starovoitov <ast@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>,
Jesper Dangaard Brouer <hawk@kernel.org>,
John Fastabend <john.fastabend@gmail.com>
Cc: Shenwei Wang <shenwei.wang@nxp.com>,
Clark Wang <xiaoning.wang@nxp.com>,
Stanislav Fomichev <sdf@fomichev.me>,
imx@lists.linux.dev, netdev@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-imx@nxp.com
Subject: [PATCH v7 net-next 3/6] net: fec: update MAX_FL based on the current MTU
Date: Wed, 10 Sep 2025 13:52:08 -0500 [thread overview]
Message-ID: <20250910185211.721341-4-shenwei.wang@nxp.com> (raw)
In-Reply-To: <20250910185211.721341-1-shenwei.wang@nxp.com>
Configure the MAX_FL (Maximum Frame Length) register according to the
current MTU value, which ensures that packets exceeding the configured MTU
trigger an RX error.
Reviewed-by: Wei Fang <wei.fang@nxp.com>
Signed-off-by: Shenwei Wang <shenwei.wang@nxp.com>
---
drivers/net/ethernet/freescale/fec_main.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c
index 5fb9afdafec4..c37ac84ab956 100644
--- a/drivers/net/ethernet/freescale/fec_main.c
+++ b/drivers/net/ethernet/freescale/fec_main.c
@@ -1149,7 +1149,7 @@ fec_restart(struct net_device *ndev)
u32 rcntl = FEC_RCR_MII;
if (OPT_ARCH_HAS_MAX_FL)
- rcntl |= fep->max_buf_size << 16;
+ rcntl |= (fep->netdev->mtu + ETH_HLEN + ETH_FCS_LEN) << 16;
if (fep->bufdesc_ex)
fec_ptp_save_state(fep);
--
2.43.0
next prev parent reply other threads:[~2025-09-10 18:52 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-09-10 18:52 [PATCH v7 net-next 0/6] net: fec: add the Jumbo frame support Shenwei Wang
2025-09-10 18:52 ` [PATCH v7 net-next 1/6] net: fec: use a member variable for maximum buffer size Shenwei Wang
2025-09-10 18:52 ` [PATCH v7 net-next 2/6] net: fec: add pagepool_order to support variable page size Shenwei Wang
2025-09-10 18:52 ` Shenwei Wang [this message]
2025-09-10 18:52 ` [PATCH v7 net-next 4/6] net: fec: add rx_frame_size to support configurable RX length Shenwei Wang
2025-09-10 18:52 ` [PATCH v7 net-next 5/6] net: fec: add change_mtu to support dynamic buffer allocation Shenwei Wang
2025-09-10 18:52 ` [PATCH v7 net-next 6/6] net: fec: enable the Jumbo frame support for i.MX8QM Shenwei Wang
2025-09-14 21:30 ` [PATCH v7 net-next 0/6] net: fec: add the Jumbo frame support patchwork-bot+netdevbpf
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=20250910185211.721341-4-shenwei.wang@nxp.com \
--to=shenwei.wang@nxp.com \
--cc=andrew+netdev@lunn.ch \
--cc=ast@kernel.org \
--cc=daniel@iogearbox.net \
--cc=davem@davemloft.net \
--cc=edumazet@google.com \
--cc=hawk@kernel.org \
--cc=imx@lists.linux.dev \
--cc=john.fastabend@gmail.com \
--cc=kuba@kernel.org \
--cc=linux-imx@nxp.com \
--cc=linux-kernel@vger.kernel.org \
--cc=netdev@vger.kernel.org \
--cc=pabeni@redhat.com \
--cc=sdf@fomichev.me \
--cc=wei.fang@nxp.com \
--cc=xiaoning.wang@nxp.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