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net: Loopback ifindex is constant now

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As pointed out, there are places, that access net->loopback_dev->ifindex
and after ifindex generation is made per-net this value becomes constant
equals 1. So go ahead and introduce the LOOPBACK_IFINDEX constant and use
it where appropriate.

Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Pavel Emelyanov
2012-08-08 21:53:36 +00:00
committed by David S. Miller
parent aa79e66eee
commit 1fb9489bf1
8 changed files with 18 additions and 10 deletions
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2
net/ipv4/fib_frontend.c
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@@ -218,7 +218,7 @@ __be32 fib_compute_spec_dst(struct sk_buff *skb)
scope = RT_SCOPE_UNIVERSE;
if (!ipv4_is_zeronet(ip_hdr(skb)->saddr)) {
fl4.flowi4_oif = 0;
fl4.flowi4_iif = net->loopback_dev->ifindex;
fl4.flowi4_iif = LOOPBACK_IFINDEX;
fl4.daddr = ip_hdr(skb)->saddr;
fl4.saddr = 0;
fl4.flowi4_tos = RT_TOS(ip_hdr(skb)->tos);