From: Shenwei Wang Date: Wed, 10 Sep 2025 18:52:08 +0000 (-0500) Subject: net: fec: update MAX_FL based on the current MTU X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=62b5bb7be7bc3dcf87a2ab6ceced88164a626397;p=users%2Fhch%2Fmisc.git net: fec: update MAX_FL based on the current MTU 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 Signed-off-by: Shenwei Wang Link: https://patch.msgid.link/20250910185211.721341-4-shenwei.wang@nxp.com Signed-off-by: Jakub Kicinski --- diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c index 05feffc4162b..7bc1fe2c13ed 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);