Commit 31bfc2d4 authored Mar 30, 2020 by Florian Fainelli Committed by David S. Miller Mar 30, 2020

net: dsa: b53: Deny enslaving port 7 for 7278 into a bridge



On 7278, port 7 connects to the ASP which should only receive frames
through the use of CFP rules, it is not desirable to have it be part of
a bridge at all since that would make it pick up unwanted traffic that
it may not even be able to filter or sustain.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent 88631864

drivers/net/dsa/b53/b53_common.c

+6 −0

Original line number	Diff line number	Diff line
		@@ -1728,6 +1728,12 @@ int b53_br_join(struct dsa_switch ds, int port, struct net_device br)
		u16 pvlan, reg;
		unsigned int i;

		/* On 7278, port 7 which connects to the ASP should only receive
		* traffic from matching CFP rules.
		*/
		if (dev->chip_id == BCM7278_DEVICE_ID && port == 7)
		return -EINVAL;

		/* Make this port leave the all VLANs join since we will have proper
		* VLAN entries from now on
		*/

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