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net: dsa: b53: allow leaky reserved multicast

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[ Upstream commit 5f93185a757ff38b36f849c659aeef368db15a68 ]

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: 967dd82ffc ("net: dsa: b53: Add support for Broadcom RoboSwitch")
Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
Tested-by: Florian Fainelli <florian.fainelli@broadcom.com>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Link: https://patch.msgid.link/20250429201710.330937-2-jonas.gorski@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Jonas Gorski
2025-04-29 22:17:00 +02:00
committed by Greg Kroah-Hartman
parent 355b052633
commit 0121c19ebd
1 changed files with 4 additions and 2 deletions
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6
drivers/net/dsa/b53/b53_common.c
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@@ -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;