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authorFlorian Fainelli <f.fainelli@gmail.com>2020-03-30 14:38:49 -0700
committerDavid S. Miller <davem@davemloft.net>2020-03-30 19:55:42 -0700
commit31bfc2d42cae6e8b1440fc5db3f0aba6c5d7e602 (patch)
tree2198de176ad4c969eb1f23ee99308ca644a4b1c0 /drivers/net
parent88631864da093377ce6d5e60b5639328622a8e5c (diff)
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>
Diffstat (limited to 'drivers/net')
-rw-r--r--drivers/net/dsa/b53/b53_common.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/net/dsa/b53/b53_common.c b/drivers/net/dsa/b53/b53_common.c
index 42c41b091682..68e2381694b9 100644
--- a/drivers/net/dsa/b53/b53_common.c
+++ b/drivers/net/dsa/b53/b53_common.c
@@ -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
*/