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authorPatrick McHardy <kaber@trash.net>2008-07-06 04:26:57 (GMT)
committerDavid S. Miller <davem@davemloft.net>2008-07-06 04:26:57 (GMT)
commit70c03b49b80ba3634958acc31853771019c0ebd3 (patch)
tree097861a5da46fc10696c97f21720c1e5053b322f /net/8021q/vlan_dev.c
parentce305002e1c9b90c2c151ce18bab0b895dd55ae6 (diff)
downloadlinux-fsl-qoriq-70c03b49b80ba3634958acc31853771019c0ebd3.tar.xz
vlan: Add GVRP support
Add GVRP support for dynamically registering VLANs with switches. By default GVRP is disabled because we only support the applicant-only participant model, which means it should not be enabled on vlans that are members of a bridge. Since there is currently no way to cleanly determine that, the user is responsible for enabling it. The code is pretty small and low impact, its wrapped in a config option though because it depends on the GARP implementation and the STP core. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/8021q/vlan_dev.c')
-rw-r--r--net/8021q/vlan_dev.c18
1 files changed, 16 insertions, 2 deletions
diff --git a/net/8021q/vlan_dev.c b/net/8021q/vlan_dev.c
index 76c665c..a0617bf 100644
--- a/net/8021q/vlan_dev.c
+++ b/net/8021q/vlan_dev.c
@@ -512,10 +512,17 @@ int vlan_dev_change_flags(const struct net_device *dev, u32 flags, u32 mask)
struct vlan_dev_info *vlan = vlan_dev_info(dev);
u32 old_flags = vlan->flags;
- if (mask & ~VLAN_FLAG_REORDER_HDR)
+ if (mask & ~(VLAN_FLAG_REORDER_HDR | VLAN_FLAG_GVRP))
return -EINVAL;
vlan->flags = (old_flags & ~mask) | (flags & mask);
+
+ if (netif_running(dev) && (vlan->flags ^ old_flags) & VLAN_FLAG_GVRP) {
+ if (vlan->flags & VLAN_FLAG_GVRP)
+ vlan_gvrp_request_join(dev);
+ else
+ vlan_gvrp_request_leave(dev);
+ }
return 0;
}
@@ -550,12 +557,19 @@ static int vlan_dev_open(struct net_device *dev)
if (dev->flags & IFF_PROMISC)
dev_set_promiscuity(real_dev, 1);
+ if (vlan->flags & VLAN_FLAG_GVRP)
+ vlan_gvrp_request_join(dev);
+
return 0;
}
static int vlan_dev_stop(struct net_device *dev)
{
- struct net_device *real_dev = vlan_dev_info(dev)->real_dev;
+ struct vlan_dev_info *vlan = vlan_dev_info(dev);
+ struct net_device *real_dev = vlan->real_dev;
+
+ if (vlan->flags & VLAN_FLAG_GVRP)
+ vlan_gvrp_request_leave(dev);
dev_mc_unsync(real_dev, dev);
dev_unicast_unsync(real_dev, dev);