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authorStephen Hemminger <shemminger@linux-foundation.org>2007-03-21 14:22:44 -0700
committerDavid S. Miller <davem@sunset.davemloft.net>2007-04-25 22:28:48 -0700
commit9cde070874b822d4677f4f01fe146991785813b1 (patch)
tree2e3a444ad82e026237ce99a4f8cad201f6ca807d /net/bridge/br_stp.c
parent9cf637473c8535b5abe27fee79254c2d552e042a (diff)
downloadblackbird-op-linux-9cde070874b822d4677f4f01fe146991785813b1.tar.gz
blackbird-op-linux-9cde070874b822d4677f4f01fe146991785813b1.zip
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>
Diffstat (limited to 'net/bridge/br_stp.c')
-rw-r--r--net/bridge/br_stp.c10
1 files changed, 7 insertions, 3 deletions
diff --git a/net/bridge/br_stp.c b/net/bridge/br_stp.c
index f9ff4d57b0d7..ebb0861e9bd5 100644
--- a/net/bridge/br_stp.c
+++ b/net/bridge/br_stp.c
@@ -370,11 +370,11 @@ static void br_make_blocking(struct net_bridge_port *p)
static void br_make_forwarding(struct net_bridge_port *p)
{
if (p->state == BR_STATE_BLOCKING) {
- if (p->br->stp_enabled) {
+ if (p->br->stp_enabled == BR_KERNEL_STP)
p->state = BR_STATE_LISTENING;
- } else {
+ else
p->state = BR_STATE_LEARNING;
- }
+
br_log_state(p);
mod_timer(&p->forward_delay_timer, jiffies + p->br->forward_delay); }
}
@@ -384,6 +384,10 @@ void br_port_state_selection(struct net_bridge *br)
{
struct net_bridge_port *p;
+ /* Don't change port states if userspace is handling STP */
+ if (br->stp_enabled == BR_USER_STP)
+ return;
+
list_for_each_entry(p, &br->port_list, list) {
if (p->state != BR_STATE_DISABLED) {
if (p->port_no == br->root_port) {
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