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29 lines
1.1 KiB
Diff
29 lines
1.1 KiB
Diff
From: Michael Brown <mcb30@etherboot.org>
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Date: Sat, 14 Nov 2009 03:02:16 +0000 (+0000)
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Subject: [ipv4] Ignore non-open net devices when performing routing
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X-Git-Url: http://git.etherboot.org/?p=gpxe.git;a=commitdiff_plain;h=4933ccbf654c27e3260e71bae7ade8286f69193a
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[ipv4] Ignore non-open net devices when performing routing
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We do not discard routing table entries when closing an interface. It
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is plausible that multiple interfaces may be on the same physical
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network; if so, then we may end up in a situation whereby outbound
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packets attempt to route via a closed interface.
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Fix by ignoring non-open net devices in ipv4_route().
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---
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diff --git a/src/net/ipv4.c b/src/net/ipv4.c
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index 6b78ad7..4c1393f 100644
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--- a/src/net/ipv4.c
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+++ b/src/net/ipv4.c
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@@ -118,6 +118,8 @@ static struct ipv4_miniroute * ipv4_route ( struct in_addr *dest ) {
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/* Find first usable route in routing table */
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list_for_each_entry ( miniroute, &ipv4_miniroutes, list ) {
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+ if ( ! ( miniroute->netdev->state & NETDEV_OPEN ) )
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+ continue;
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local = ( ( ( dest->s_addr ^ miniroute->address.s_addr )
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& miniroute->netmask.s_addr ) == 0 );
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has_gw = ( miniroute->gateway.s_addr );
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