interface: add new "ifup-failed" hotplug event

This hook makes it possible to do some helper work in hotplug scripts
when a connection is not established successfully.

example: try several username/passwords from a pool to establish a
pppoe or wwan connection by replacing the configured values of the
connection in a hotplug script.

Signed-off-by: Martin Schiller <ms@dev.tdt.de>

diff --git a/interface-event.c b/interface-event.c
index 4976c2c..86e8f54 100644 (file)
--- a/interface-event.c
+++ b/interface-event.c
@@ -33,6 +33,7 @@ static struct uloop_process task = {
 static const char * const eventnames[] = {
        [IFEV_DOWN] = "ifdown",
        [IFEV_UP] = "ifup",
+       [IFEV_UP_FAILED] = "ifup-failed",
        [IFEV_UPDATE] = "ifupdate",
        [IFEV_FREE] = "free",
        [IFEV_RELOAD] = "reload",
@@ -191,6 +192,7 @@ static void interface_event_cb(struct interface_user *dep, struct interface *ifa
        switch (ev) {
                case IFEV_LINK_UP:
                case IFEV_UP:
+               case IFEV_UP_FAILED:
                case IFEV_UPDATE:
                case IFEV_DOWN:
                        interface_queue_event(iface, ev);

diff --git a/interface.c b/interface.c
index 593b049..900a523 100644 (file)
--- a/interface.c
+++ b/interface.c
@@ -241,6 +241,7 @@ interface_event(struct interface *iface, enum interface_event ev)
                adev = iface->l3_dev.dev;
                /* fall through */
        case IFEV_DOWN:
+       case IFEV_UP_FAILED:
                alias_notify_device(iface->name, adev);
                break;
        default:
@@ -268,6 +269,8 @@ mark_interface_down(struct interface *iface)
        iface->state = IFS_DOWN;
        if (state == IFS_UP)
                interface_event(iface, IFEV_DOWN);
+       else
+               interface_event(iface, IFEV_UP_FAILED);
        interface_ip_set_enabled(&iface->config_ip, false);
        interface_ip_set_enabled(&iface->proto_ip, false);
        interface_ip_flush(&iface->proto_ip);
@@ -557,6 +560,7 @@ interface_alias_cb(struct interface_user *dep, struct interface *iface, enum int
                interface_set_available(alias, true);
                break;
        case IFEV_DOWN:
+       case IFEV_UP_FAILED:
                interface_set_available(alias, false);
                interface_set_main_dev(alias, NULL);
                break;

diff --git a/interface.h b/interface.h
index d35fd98..0e58f69 100644 (file)
--- a/interface.h
+++ b/interface.h
@@ -23,6 +23,7 @@ struct interface_proto_state;
 enum interface_event {
        IFEV_DOWN,
        IFEV_UP,
+       IFEV_UP_FAILED,
        IFEV_UPDATE,
        IFEV_FREE,
        IFEV_RELOAD,