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Implements handling of BSD iface arrival/departure notifications.

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Thanks to Alexander V. Chernikov for original patch.
This commit is contained in:
Ondrej Zajicek 2012-01-23 03:15:12 +01:00
parent 732a0a257d
commit 09686693d3
4 changed files with 40 additions and 1 deletions
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1
nest/iface.c
View file

@ -306,6 +306,7 @@ if_update(struct iface *new)
new->addr = i->addr;
memcpy(&new->addrs, &i->addrs, sizeof(i->addrs));
memcpy(i, new, sizeof(*i));
i->flags &= ~IF_UP; /* IF_TMP_DOWN will be added later */
goto newif;
}

32
sysdep/bsd/krt-sock.c
View file

@ -409,6 +409,33 @@ krt_read_rt(struct ks_msg *msg, struct krt_proto *p, int scan)
krt_got_route_async(p, e, new);
}
static void
krt_read_ifannounce(struct ks_msg *msg)
{
struct if_announcemsghdr *ifam = (struct if_announcemsghdr *)&msg->rtm;
if (ifam->ifan_what == IFAN_ARRIVAL)
{
/* Not enough info to create the iface, so we just trigger iface scan */
kif_request_scan();
}
else if (ifam->ifan_what == IFAN_DEPARTURE)
{
struct iface *iface = if_find_by_index(ifam->ifan_index);
/* Interface is destroyed */
if (!iface)
{
DBG("KRT: unknown interface (%s, #%d) going down. Ignoring\n", ifam->ifan_name, ifam->ifan_index);
return;
}
if_delete(iface);
}
DBG("KRT: IFANNOUNCE what: %d index %d name %s\n", ifam->ifan_what, ifam->ifan_index, ifam->ifan_name);
}
static void
krt_read_ifinfo(struct ks_msg *msg)
{
@ -435,7 +462,7 @@ krt_read_ifinfo(struct ks_msg *msg)
if (dl && (dl->sdl_family != AF_LINK))
{
log("Ignoring strange IFINFO");
log(L_WARN "Ignoring strange IFINFO");
return;
}
@ -599,6 +626,9 @@ krt_read_msg(struct proto *p, struct ks_msg *msg, int scan)
case RTM_DELETE:
krt_read_rt(msg, (struct krt_proto *)p, scan);
break;
case RTM_IFANNOUNCE:
krt_read_ifannounce(msg);
break;
case RTM_IFINFO:
krt_read_ifinfo(msg);
break;

7
sysdep/unix/krt.c
View file

@ -104,6 +104,13 @@ kif_force_scan(void)
}
}
void
kif_request_scan(void)
{
if (kif_proto && kif_scan_timer->expires > now)
tm_start(kif_scan_timer, 1);
}
static struct proto *
kif_init(struct proto_config *c)
{

1
sysdep/unix/krt.h
View file

@ -77,6 +77,7 @@ extern pool *krt_pool;
if (pr->p.debug & fl) \
{ log(L_TRACE "%s: " msg, pr->p.name , ## args); } } while(0)
void kif_request_scan(void);
void krt_got_route(struct krt_proto *p, struct rte *e);
void krt_got_route_async(struct krt_proto *p, struct rte *e, int new);