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net: microchip: sparx5: Discard frames with SMAC multicast addresses

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A valid frame should never use a multicast address as its source MAC
address, so discard these invalid frames.

Signed-off-by: Steen Hegelund <steen.hegelund@microchip.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Steen Hegelund 2023-02-14 11:40:40 +01:00 committed by Paolo Abeni
parent 72bc7f1631
commit 65b6625069
1 changed files with 5 additions and 0 deletions
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5
drivers/net/ethernet/microchip/sparx5/sparx5_port.c
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@ -1071,6 +1071,11 @@ int sparx5_port_init(struct sparx5 *sparx5,
/* Discard pause frame 01-80-C2-00-00-01 */
spx5_wr(PAUSE_DISCARD, sparx5, ANA_CL_CAPTURE_BPDU_CFG(port->portno));
/* Discard SMAC multicast */
spx5_rmw(ANA_CL_FILTER_CTRL_FILTER_SMAC_MC_DIS_SET(0),
ANA_CL_FILTER_CTRL_FILTER_SMAC_MC_DIS,
sparx5, ANA_CL_FILTER_CTRL(port->portno));
if (conf->portmode == PHY_INTERFACE_MODE_QSGMII ||
conf->portmode == PHY_INTERFACE_MODE_SGMII) {
err = sparx5_serdes_set(sparx5, port, conf);