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kernel-pfroute: rescan address list for an interface if its state changes

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It seems that we don't get address notifications if the interface is down
on OS X.
This commit is contained in:
Martin Willi 2013-04-19 10:47:34 +02:00
parent 0fd409db77
commit 6e879a59fc
1 changed files with 43 additions and 0 deletions
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43
src/libhydra/plugins/kernel_pfroute/kernel_pfroute_net.c
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@ -464,6 +464,47 @@ static void process_addr(private_kernel_pfroute_net_t *this,
} }
} }
/**
* Re-initialize address list of an interface if it changes state
*/
static void repopulate_iface(private_kernel_pfroute_net_t *this,
iface_entry_t *iface)
{
struct ifaddrs *ifap, *ifa;
addr_entry_t *addr;
while (iface->addrs->remove_last(iface->addrs, (void**)&addr) == SUCCESS)
{
addr_map_entry_remove(addr, iface, this);
addr_entry_destroy(addr);
}
if (getifaddrs(&ifap) == 0)
{
for (ifa = ifap; ifa != NULL; ifa = ifa->ifa_next)
{
if (ifa->ifa_addr && streq(ifa->ifa_name, iface->ifname))
{
switch (ifa->ifa_addr->sa_family)
{
case AF_INET:
case AF_INET6:
INIT(addr,
.ip = host_create_from_sockaddr(ifa->ifa_addr),
.refcount = 1,
);
iface->addrs->insert_last(iface->addrs, addr);
addr_map_entry_add(this, addr, iface);
break;
default:
break;
}
}
}
freeifaddrs(ifap);
}
}
/** /**
* Process an RTM_IFINFO message from the kernel * Process an RTM_IFINFO message from the kernel
*/ */
@ -494,6 +535,7 @@ static void process_link(private_kernel_pfroute_net_t *this,
} }
} }
iface->flags = msg->ifm_flags; iface->flags = msg->ifm_flags;
repopulate_iface(this, iface);
found = TRUE; found = TRUE;
break; break;
} }
@ -512,6 +554,7 @@ static void process_link(private_kernel_pfroute_net_t *this,
DBG1(DBG_KNL, "interface %s appeared", iface->ifname); DBG1(DBG_KNL, "interface %s appeared", iface->ifname);
iface->usable = hydra->kernel_interface->is_interface_usable( iface->usable = hydra->kernel_interface->is_interface_usable(
hydra->kernel_interface, iface->ifname); hydra->kernel_interface, iface->ifname);
repopulate_iface(this, iface);
this->ifaces->insert_last(this->ifaces, iface); this->ifaces->insert_last(this->ifaces, iface);
} }
else else