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net: fec: update MAX_FL based on the current MTU

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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>
Link: https://patch.msgid.link/20250910185211.721341-4-shenwei.wang@nxp.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Shenwei Wang
2025-09-10 13:52:08 -05:00
committed by Jakub Kicinski
parent 29e6d5f89e
commit 62b5bb7be7
1 changed files with 1 additions and 1 deletions
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2
drivers/net/ethernet/freescale/fec_main.c
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@@ -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);