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net: dsa: rtl8366: Properly clear member config

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[ Upstream commit 4ddcaf1ebb ]

When removing a port from a VLAN we are just erasing the
member config for the VLAN, which is wrong: other ports
can be using it.

Just mask off the port and only zero out the rest of the
member config once ports using of the VLAN are removed
from it.

Reported-by: Florian Fainelli <f.fainelli@gmail.com>
Fixes: d8652956cf ("net: dsa: realtek-smi: Add Realtek SMI driver")
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Linus Walleij
2020-09-05 12:32:33 +02:00
committed by Greg Kroah-Hartman
parent d0c2f72526
commit 76fde30cf1
1 changed files with 13 additions and 7 deletions
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20
drivers/net/dsa/rtl8366.c
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@@ -452,13 +452,19 @@ int rtl8366_vlan_del(struct dsa_switch *ds, int port,
return ret;
if (vid == vlanmc.vid) {
/* clear VLAN member configurations */
vlanmc.vid = 0;
vlanmc.priority = 0;
vlanmc.member = 0;
vlanmc.untag = 0;
vlanmc.fid = 0;
/* Remove this port from the VLAN */
vlanmc.member &= ~BIT(port);
vlanmc.untag &= ~BIT(port);
/*
* If no ports are members of this VLAN
* anymore then clear the whole member
* config so it can be reused.
*/
if (!vlanmc.member && vlanmc.untag) {
vlanmc.vid = 0;
vlanmc.priority = 0;
vlanmc.fid = 0;
}
ret = smi->ops->set_vlan_mc(smi, i, &vlanmc);
if (ret) {
dev_err(smi->dev,