summaryrefslogtreecommitdiff
path: root/net/bridge/br_sysfs_if.c
diff options
context:
space:
mode:
authorNikolay Aleksandrov <nikolay@cumulusnetworks.com>2017-09-27 16:12:44 +0300
committerDavid S. Miller <davem@davemloft.net>2017-09-29 06:02:55 +0100
commit5af48b59f35cf712793badabe1a574a0d0ce3bd3 (patch)
treed37a58d1a9d1dca19835760305f7a10be68aca5f /net/bridge/br_sysfs_if.c
parentde9c8a6a5f083b1106300c842108c2452b25a896 (diff)
net: bridge: add per-port group_fwd_mask with less restrictions
We need to be able to transparently forward most link-local frames via tunnels (e.g. vxlan, qinq). Currently the bridge's group_fwd_mask has a mask which restricts the forwarding of STP and LACP, but we need to be able to forward these over tunnels and control that forwarding on a per-port basis thus add a new per-port group_fwd_mask option which only disallows mac pause frames to be forwarded (they're always dropped anyway). The patch does not change the current default situation - all of the others are still restricted unless configured for forwarding. We have successfully tested this patch with LACP and STP forwarding over VxLAN and qinq tunnels. Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/bridge/br_sysfs_if.c')
-rw-r--r--net/bridge/br_sysfs_if.c18
1 files changed, 18 insertions, 0 deletions
diff --git a/net/bridge/br_sysfs_if.c b/net/bridge/br_sysfs_if.c
index 5d5d413a6cf8..9110d5e56085 100644
--- a/net/bridge/br_sysfs_if.c
+++ b/net/bridge/br_sysfs_if.c
@@ -165,6 +165,23 @@ static int store_flush(struct net_bridge_port *p, unsigned long v)
}
static BRPORT_ATTR(flush, S_IWUSR, NULL, store_flush);
+static ssize_t show_group_fwd_mask(struct net_bridge_port *p, char *buf)
+{
+ return sprintf(buf, "%#x\n", p->group_fwd_mask);
+}
+
+static int store_group_fwd_mask(struct net_bridge_port *p,
+ unsigned long v)
+{
+ if (v & BR_GROUPFWD_MACPAUSE)
+ return -EINVAL;
+ p->group_fwd_mask = v;
+
+ return 0;
+}
+static BRPORT_ATTR(group_fwd_mask, S_IRUGO | S_IWUSR, show_group_fwd_mask,
+ store_group_fwd_mask);
+
BRPORT_ATTR_FLAG(hairpin_mode, BR_HAIRPIN_MODE);
BRPORT_ATTR_FLAG(bpdu_guard, BR_BPDU_GUARD);
BRPORT_ATTR_FLAG(root_block, BR_ROOT_BLOCK);
@@ -223,6 +240,7 @@ static const struct brport_attribute *brport_attrs[] = {
&brport_attr_proxyarp_wifi,
&brport_attr_multicast_flood,
&brport_attr_broadcast_flood,
+ &brport_attr_group_fwd_mask,
NULL
};