Commit 5f93185a authored by Jonas Gorski's avatar Jonas Gorski Committed by Jakub Kicinski
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net: dsa: b53: allow leaky reserved multicast 



Allow reserved multicast to ignore VLAN membership so STP and other
management protocols work without a PVID VLAN configured when using a
vlan aware bridge.

Fixes: 967dd82f ("net: dsa: b53: Add support for Broadcom RoboSwitch")
Signed-off-by: default avatarJonas Gorski <jonas.gorski@gmail.com>
Tested-by: default avatarFlorian Fainelli <florian.fainelli@broadcom.com>
Reviewed-by: default avatarFlorian Fainelli <florian.fainelli@broadcom.com>
Link: https://patch.msgid.link/20250429201710.330937-2-jonas.gorski@gmail.com


Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent ea78f201

drivers/net/dsa/b53/b53_common.c

+4 −2
Original line number Diff line number Diff line
@@ -373,9 +373,11 @@ static void b53_enable_vlan(struct b53_device *dev, int port, bool enable, 
		b53_read8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL5, &vc5);

	}



	vc1 &= ~VC1_RX_MCST_FWD_EN;



	if (enable) {

		vc0 |= VC0_VLAN_EN | VC0_VID_CHK_EN | VC0_VID_HASH_VID;

		vc1 |= VC1_RX_MCST_UNTAG_EN | VC1_RX_MCST_FWD_EN;

		vc1 |= VC1_RX_MCST_UNTAG_EN;

		vc4 &= ~VC4_ING_VID_CHECK_MASK;

		if (enable_filtering) {

			vc4 |= VC4_ING_VID_VIO_DROP << VC4_ING_VID_CHECK_S;
@@ -393,7 +395,7 @@ static void b53_enable_vlan(struct b53_device *dev, int port, bool enable, 


	} else {

		vc0 &= ~(VC0_VLAN_EN | VC0_VID_CHK_EN | VC0_VID_HASH_VID);

		vc1 &= ~(VC1_RX_MCST_UNTAG_EN | VC1_RX_MCST_FWD_EN);

		vc1 &= ~VC1_RX_MCST_UNTAG_EN;

		vc4 &= ~VC4_ING_VID_CHECK_MASK;

		vc5 &= ~VC5_DROP_VTABLE_MISS;