diff options
| author | Nikolay Aleksandrov <nikolay@cumulusnetworks.com> | 2017-10-27 13:19:37 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-10-29 11:03:43 +0900 |
| commit | f418af6343fbfaaa3306e7cf15906be4f20c69ff (patch) | |
| tree | e5de5f4c488391973d2e1863bb1195f17e8c4879 /net/bridge/br_netlink.c | |
| parent | e19b42a1a0669ed5b8009930c5269a5a87cc363c (diff) | |
| download | linux-f418af6343fbfaaa3306e7cf15906be4f20c69ff.tar.bz2 | |
bridge: vlan: signal if anything changed on vlan add
Before this patch there was no way to tell if the vlan add operation
actually changed anything, thus we would always generate a notification
on adds. Let's make the notifications more precise and generate them
only if anything changed, so use the new bool parameter to signal that the
vlan was updated. We cannot return an error because there are valid use
cases that will be broken (e.g. overlapping range add) and also we can't
risk masking errors due to calls into drivers for vlan add which can
potentially return anything.
Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Reviewed-by: Toshiaki Makita <makita.toshiaki@lab.ntt.co.jp>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/bridge/br_netlink.c')
| -rw-r--r-- | net/bridge/br_netlink.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/net/bridge/br_netlink.c b/net/bridge/br_netlink.c index d0290ede9342..e732403669c6 100644 --- a/net/bridge/br_netlink.c +++ b/net/bridge/br_netlink.c @@ -508,6 +508,7 @@ int br_getlink(struct sk_buff *skb, u32 pid, u32 seq, static int br_vlan_info(struct net_bridge *br, struct net_bridge_port *p, int cmd, struct bridge_vlan_info *vinfo, bool *changed) { + bool curr_change; int err = 0; switch (cmd) { @@ -516,12 +517,14 @@ static int br_vlan_info(struct net_bridge *br, struct net_bridge_port *p, /* if the MASTER flag is set this will act on the global * per-VLAN entry as well */ - err = nbp_vlan_add(p, vinfo->vid, vinfo->flags); + err = nbp_vlan_add(p, vinfo->vid, vinfo->flags, + &curr_change); } else { vinfo->flags |= BRIDGE_VLAN_INFO_BRENTRY; - err = br_vlan_add(br, vinfo->vid, vinfo->flags); + err = br_vlan_add(br, vinfo->vid, vinfo->flags, + &curr_change); } - if (!err) + if (curr_change) *changed = true; break; |