diff options
Diffstat (limited to 'net/bridge/br_stp_if.c')
-rw-r--r-- | net/bridge/br_stp_if.c | 59 |
1 files changed, 56 insertions, 3 deletions
diff --git a/net/bridge/br_stp_if.c b/net/bridge/br_stp_if.c index a285897a2fb4..3e246b37020e 100644 --- a/net/bridge/br_stp_if.c +++ b/net/bridge/br_stp_if.c @@ -87,7 +87,6 @@ void br_stp_disable_bridge(struct net_bridge *br) void br_stp_enable_port(struct net_bridge_port *p) { br_init_port(p); - br_ifinfo_notify(RTM_NEWLINK, p); br_port_state_selection(p->br); } @@ -101,8 +100,6 @@ void br_stp_disable_port(struct net_bridge_port *p) printk(KERN_INFO "%s: port %i(%s) entering %s state\n", br->dev->name, p->port_no, p->dev->name, "disabled"); - br_ifinfo_notify(RTM_DELLINK, p); - wasroot = br_is_root_bridge(br); br_become_designated_port(p); p->state = BR_STATE_DISABLED; @@ -123,6 +120,62 @@ void br_stp_disable_port(struct net_bridge_port *p) br_become_root_bridge(br); } +static void br_stp_start(struct net_bridge *br) +{ + int r; + char *argv[] = { BR_STP_PROG, br->dev->name, "start", NULL }; + char *envp[] = { NULL }; + + r = call_usermodehelper(BR_STP_PROG, argv, envp, 1); + if (r == 0) { + br->stp_enabled = BR_USER_STP; + printk(KERN_INFO "%s: userspace STP started\n", br->dev->name); + } else { + br->stp_enabled = BR_KERNEL_STP; + printk(KERN_INFO "%s: starting userspace STP failed, " + "staring kernel STP\n", br->dev->name); + + /* To start timers on any ports left in blocking */ + spin_lock_bh(&br->lock); + br_port_state_selection(br); + spin_unlock_bh(&br->lock); + } +} + +static void br_stp_stop(struct net_bridge *br) +{ + int r; + char *argv[] = { BR_STP_PROG, br->dev->name, "stop", NULL }; + char *envp[] = { NULL }; + + if (br->stp_enabled == BR_USER_STP) { + r = call_usermodehelper(BR_STP_PROG, argv, envp, 1); + printk(KERN_INFO "%s: userspace STP stopped, return code %d\n", + br->dev->name, r); + + + /* To start timers on any ports left in blocking */ + spin_lock_bh(&br->lock); + br_port_state_selection(br); + spin_unlock_bh(&br->lock); + } + + br->stp_enabled = BR_NO_STP; +} + +void br_stp_set_enabled(struct net_bridge *br, unsigned long val) +{ + ASSERT_RTNL(); + + if (val) { + if (br->stp_enabled == BR_NO_STP) + br_stp_start(br); + } else { + if (br->stp_enabled != BR_NO_STP) + br_stp_stop(br); + } +} + /* called under bridge lock */ void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *addr) { |