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| author | Michael Brown | 2009-11-14 04:02:16 +0100 |
|---|---|---|
| committer | Michael Brown | 2009-11-16 23:12:48 +0100 |
| commit | 4933ccbf654c27e3260e71bae7ade8286f69193a (patch) | |
| tree | 08971af57361e864a96926a908d1e1a2f1b78fc6 /src/net/ipv4.c | |
| parent | [ipv4] Allow calculation of default subnet mask (diff) | |
| download | ipxe-4933ccbf654c27e3260e71bae7ade8286f69193a.tar.gz ipxe-4933ccbf654c27e3260e71bae7ade8286f69193a.tar.xz ipxe-4933ccbf654c27e3260e71bae7ade8286f69193a.zip | |
[ipv4] Ignore non-open net devices when performing routing
We do not discard routing table entries when closing an interface. It
is plausible that multiple interfaces may be on the same physical
network; if so, then we may end up in a situation whereby outbound
packets attempt to route via a closed interface.
Fix by ignoring non-open net devices in ipv4_route().
Diffstat (limited to 'src/net/ipv4.c')
| -rw-r--r-- | src/net/ipv4.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/src/net/ipv4.c b/src/net/ipv4.c index 6b78ad77..4c1393f2 100644 --- a/src/net/ipv4.c +++ b/src/net/ipv4.c @@ -118,6 +118,8 @@ static struct ipv4_miniroute * ipv4_route ( struct in_addr *dest ) { /* Find first usable route in routing table */ list_for_each_entry ( miniroute, &ipv4_miniroutes, list ) { + if ( ! ( miniroute->netdev->state & NETDEV_OPEN ) ) + continue; local = ( ( ( dest->s_addr ^ miniroute->address.s_addr ) & miniroute->netmask.s_addr ) == 0 ); has_gw = ( miniroute->gateway.s_addr ); |