From 9cde070874b822d4677f4f01fe146991785813b1 Mon Sep 17 00:00:00 2001 From: Stephen Hemminger <shemminger@linux-foundation.org> Date: Wed, 21 Mar 2007 14:22:44 -0700 Subject: bridge: add support for user mode STP This patchset based on work by Aji_Srinivas@emc.com provides allows spanning tree to be controled from userspace. Like hotplug, it uses call_usermodehelper when spanning tree is enabled so there is no visible API change. If call to start usermode STP fails it falls back to existing kernel STP. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> --- net/bridge/br_stp_bpdu.c | 19 +++++++++++++------ 1 file changed, 13 insertions(+), 6 deletions(-) (limited to 'net/bridge/br_stp_bpdu.c') diff --git a/net/bridge/br_stp_bpdu.c b/net/bridge/br_stp_bpdu.c index b9fb0dc4ab12..60112bce6698 100644 --- a/net/bridge/br_stp_bpdu.c +++ b/net/bridge/br_stp_bpdu.c @@ -33,9 +33,6 @@ static void br_send_bpdu(struct net_bridge_port *p, { struct sk_buff *skb; - if (!p->br->stp_enabled) - return; - skb = dev_alloc_skb(length+LLC_RESERVE); if (!skb) return; @@ -75,6 +72,9 @@ void br_send_config_bpdu(struct net_bridge_port *p, struct br_config_bpdu *bpdu) { unsigned char buf[35]; + if (p->br->stp_enabled != BR_KERNEL_STP) + return; + buf[0] = 0; buf[1] = 0; buf[2] = 0; @@ -117,6 +117,9 @@ void br_send_tcn_bpdu(struct net_bridge_port *p) { unsigned char buf[4]; + if (p->br->stp_enabled != BR_KERNEL_STP) + return; + buf[0] = 0; buf[1] = 0; buf[2] = 0; @@ -157,9 +160,13 @@ int br_stp_rcv(struct sk_buff *skb, struct net_device *dev, br = p->br; spin_lock(&br->lock); - if (p->state == BR_STATE_DISABLED - || !br->stp_enabled - || !(br->dev->flags & IFF_UP)) + if (br->stp_enabled != BR_KERNEL_STP) + goto out; + + if (!(br->dev->flags & IFF_UP)) + goto out; + + if (p->state == BR_STATE_DISABLED) goto out; if (compare_ether_addr(dest, br->group_addr) != 0) -- cgit v1.2.3