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

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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>
This commit is contained in:
Florian Fainelli 2020-03-30 14:38:49 -07:00 committed by David S. Miller
parent 88631864da
commit 31bfc2d42c
1 changed files with 6 additions and 0 deletions
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6
drivers/net/dsa/b53/b53_common.c
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@ -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
*/