net: dsa: b53: Prevent tagged VLAN on port 7 for 7278 (88631864) · Commits · 戴 / test

On 7278, port 7 of the switch connects to the ASP UniMAC which is not capable of processing VLAN tagged frames. We can still allow the port to be part of a VLAN entry, and we may want it to be untagged on egress on that VLAN because of that limitation. Signed-off-by:

Florian Fainelli <f.fainelli@gmail.com> Signed-off-by:

David S. Miller <davem@davemloft.net>

drivers/net/dsa/b53/b53_common.c

+8 −0

Original line number	Diff line number	Diff line
		@@ -1355,6 +1355,14 @@ int b53_vlan_prepare(struct dsa_switch *ds, int port,
		if ((is5325(dev) \|\| is5365(dev)) && vlan->vid_begin == 0)
		return -EOPNOTSUPP;

		/* Port 7 on 7278 connects to the ASP's UniMAC which is not capable of
		* receiving VLAN tagged frames at all, we can still allow the port to
		* be configured for egress untagged.
		*/
		if (dev->chip_id == BCM7278_DEVICE_ID && port == 7 &&
		!(vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED))
		return -EINVAL;

		if (vlan->vid_end > dev->num_vlans)
		return -ERANGE;

Admin message