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net: bridge: allow add/remove permanent mdb entries on disabled ports

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Adding mdb entries on disabled ports allows you to do setup before
accepting any traffic, avoiding any time where the port is not in the
multicast group.

Signed-off-by: Casper Andersson <casper.casan@gmail.com>
Acked-by: Nikolay Aleksandrov <razor@blackwall.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Casper Andersson 2022-06-14 08:32:23 +02:00 committed by David S. Miller
parent fe63ec97e3
commit 2aa4abed37
1 changed files with 9 additions and 6 deletions
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15
net/bridge/br_mdb.c
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@ -1025,8 +1025,8 @@ static int br_mdb_add(struct sk_buff *skb, struct nlmsghdr *nlh,
NL_SET_ERR_MSG_MOD(extack, "Port belongs to a different bridge device");
return -EINVAL;
}
if (p->state == BR_STATE_DISABLED) {
NL_SET_ERR_MSG_MOD(extack, "Port is in disabled state");
if (p->state == BR_STATE_DISABLED && entry->state != MDB_PERMANENT) {
NL_SET_ERR_MSG_MOD(extack, "Port is in disabled state and entry is not permanent");
return -EINVAL;
}
vg = nbp_vlan_group(p);
@ -1086,9 +1086,6 @@ static int __br_mdb_del(struct net_bridge *br, struct br_mdb_entry *entry,
if (!p->key.port || p->key.port->dev->ifindex != entry->ifindex)
continue;
if (p->key.port->state == BR_STATE_DISABLED)
goto unlock;
br_multicast_del_pg(mp, p, pp);
err = 0;
break;
@ -1124,8 +1121,14 @@ static int br_mdb_del(struct sk_buff *skb, struct nlmsghdr *nlh,
return -ENODEV;
p = br_port_get_rtnl(pdev);
if (!p || p->br != br || p->state == BR_STATE_DISABLED)
if (!p) {
NL_SET_ERR_MSG_MOD(extack, "Net device is not a bridge port");
return -EINVAL;
}
if (p->br != br) {
NL_SET_ERR_MSG_MOD(extack, "Port belongs to a different bridge device");
return -EINVAL;
}
vg = nbp_vlan_group(p);
} else {
vg = br_vlan_group(br);