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| author |   Florian Fainelli <f.fainelli@gmail.com> | 2020-03-30 14:38:49 -0700 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2020-03-30 19:55:42 -0700 |
| commit | 31bfc2d42cae6e8b1440fc5db3f0aba6c5d7e602 (patch) | |
| tree | 2198de176ad4c969eb1f23ee99308ca644a4b1c0 /drivers/net/dsa/b53 | |
| parent | net: dsa: b53: Prevent tagged VLAN on port 7 for 7278 (diff) | |
| download | linux-dev-31bfc2d42cae6e8b1440fc5db3f0aba6c5d7e602.tar.xz linux-dev-31bfc2d42cae6e8b1440fc5db3f0aba6c5d7e602.zip | |
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/dsa/b53')
| -rw-r--r-- | drivers/net/dsa/b53/b53_common.c | 6 |
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 */ |