[net-next,01/10] net: microchip: sparx5: Discard frames with SMAC multicast addresses
| Message ID | 20230213092426.1331379-2-steen.hegelund@microchip.com |
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From: Steen Hegelund <steen.hegelund@microchip.com>
To: "David S . Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>,
Paolo Abeni <pabeni@redhat.com>
CC: Steen Hegelund <steen.hegelund@microchip.com>,
<UNGLinuxDriver@microchip.com>,
Randy Dunlap <rdunlap@infradead.org>,
"Casper Andersson" <casper.casan@gmail.com>,
Russell King <rmk+kernel@armlinux.org.uk>,
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"Nathan Huckleberry" <nhuck@google.com>,
<linux-kernel@vger.kernel.org>, <netdev@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
"Steen Hegelund" <Steen.Hegelund@microchip.com>,
Daniel Machon <daniel.machon@microchip.com>,
Horatiu Vultur <horatiu.vultur@microchip.com>,
Lars Povlsen <lars.povlsen@microchip.com>,
Dan Carpenter <error27@gmail.com>,
Michael Walle <michael@walle.cc>
Subject: [PATCH net-next 01/10] net: microchip: sparx5: Discard frames with
SMAC multicast addresses
Date: Mon, 13 Feb 2023 10:24:17 +0100
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| Series |
Adding Sparx5 ES0 VCAP support
|
|
Commit Message
Steen Hegelund
Feb. 13, 2023, 9:24 a.m. UTC
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>
---
drivers/net/ethernet/microchip/sparx5/sparx5_port.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/net/ethernet/microchip/sparx5/sparx5_port.c b/drivers/net/ethernet/microchip/sparx5/sparx5_port.c index 246259b2ae94..3a1b1a1f5a19 100644 --- a/drivers/net/ethernet/microchip/sparx5/sparx5_port.c +++ b/drivers/net/ethernet/microchip/sparx5/sparx5_port.c @@ -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);