net: dsa: mt7530: set CPU port to fallback mode (38152ea3) · Commits · 戴 / test

Currently, setting a bridge's self PVID to other value and deleting the default VID 1 renders untagged ports of that VLAN unable to talk to the CPU port: bridge vlan add dev br0 vid 2 pvid untagged self bridge vlan del dev br0 vid 1 self bridge vlan add dev sw0p0 vid 2 pvid untagged bridge vlan del dev sw0p0 vid 1 # br0 cannot send untagged frames out of sw0p0 anymore That is because the CPU port is set to security mode and its PVID is still 1, and untagged frames are dropped due to VLAN member violation. Set the CPU port to fallback mode so untagged frames can pass through. Fixes: ("net: dsa: mediatek: add VLAN support for MT7530") Signed-off-by:

DENG Qingfang <dqfext@gmail.com> Reviewed-by:

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

David S. Miller <davem@davemloft.net>

drivers/net/dsa/mt7530.c

+8 −3

Original line number	Diff line number	Diff line
		@@ -810,8 +810,13 @@ mt7530_port_set_vlan_aware(struct dsa_switch *ds, int port)
		PCR_MATRIX_MASK, PCR_MATRIX(MT7530_ALL_MEMBERS));

		/* Trapped into security mode allows packet forwarding through VLAN
		* table lookup.
		* table lookup. CPU port is set to fallback mode to let untagged
		* frames pass through.
		*/
		if (dsa_is_cpu_port(ds, port))
		mt7530_rmw(priv, MT7530_PCR_P(port), PCR_PORT_VLAN_MASK,
		MT7530_PORT_FALLBACK_MODE);
		else
		mt7530_rmw(priv, MT7530_PCR_P(port), PCR_PORT_VLAN_MASK,
		MT7530_PORT_SECURITY_MODE);

drivers/net/dsa/mt7530.h

+6 −0

Original line number	Diff line number	Diff line
		@@ -152,6 +152,12 @@ enum mt7530_port_mode {
		/* Port Matrix Mode: Frames are forwarded by the PCR_MATRIX members. */
		MT7530_PORT_MATRIX_MODE = PORT_VLAN(0),

		/* Fallback Mode: Forward received frames with ingress ports that do
		* not belong to the VLAN member. Frames whose VID is not listed on
		* the VLAN table are forwarded by the PCR_MATRIX members.
		*/
		MT7530_PORT_FALLBACK_MODE = PORT_VLAN(1),

		/* Security Mode: Discard any frame due to ingress membership
		* violation or VID missed on the VLAN table.
		*/

Admin message