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| author | Patrick McHardy <kaber@trash.net> | 2007-06-01 11:45:04 -0700 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2007-06-03 18:08:51 -0700 |
| commit | 6e1d91039becc9d5bcd046d8c709dbaf471220e3 (patch) | |
| tree | bd12a1493d5651aed36f7606c72e146bbf7c0c60 | |
| parent | 584bdf8cbdf6f277c2a00e083257ee75687cf6f4 (diff) | |
| download | linux-stable-6e1d91039becc9d5bcd046d8c709dbaf471220e3.tar.gz linux-stable-6e1d91039becc9d5bcd046d8c709dbaf471220e3.tar.bz2 linux-stable-6e1d91039becc9d5bcd046d8c709dbaf471220e3.zip | |
[ICMP]: Fix icmp_errors_use_inbound_ifaddr sysctl
Currently when icmp_errors_use_inbound_ifaddr is set and an ICMP error is
sent after the packet passed through ip_output(), an address from the
outgoing interface is chosen as ICMP source address since skb->dev doesn't
point to the incoming interface anymore.
Fix this by doing an interface lookup on rt->dst.iif and using that device.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/ipv4/icmp.c | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/net/ipv4/icmp.c b/net/ipv4/icmp.c index e238b17f554c..02a899bec196 100644 --- a/net/ipv4/icmp.c +++ b/net/ipv4/icmp.c @@ -514,12 +514,15 @@ void icmp_send(struct sk_buff *skb_in, int type, int code, __be32 info) saddr = iph->daddr; if (!(rt->rt_flags & RTCF_LOCAL)) { - /* This is broken, skb_in->dev points to the outgoing device - * after the packet passes through ip_output(). - */ - if (skb_in->dev && sysctl_icmp_errors_use_inbound_ifaddr) - saddr = inet_select_addr(skb_in->dev, 0, RT_SCOPE_LINK); - else + struct net_device *dev = NULL; + + if (rt->fl.iif && sysctl_icmp_errors_use_inbound_ifaddr) + dev = dev_get_by_index(rt->fl.iif); + + if (dev) { + saddr = inet_select_addr(dev, 0, RT_SCOPE_LINK); + dev_put(dev); + } else saddr = 0; } |