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[IPV4]: Add ip_local_out

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Most callers of the LOCAL_OUT chain will set the IP packet length and
header checksum before doing so.  They also share the same output
function dst_output.

This patch creates a new function called ip_local_out which does all
of that and converts the appropriate users over to it.

Apart from removing duplicate code, it will also help in merging the
IPsec output path once the same thing is done for IPv6.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Herbert Xu 2008-01-11 19:14:00 -08:00 • committed by David S. Miller
parent 227620e295
commit c439cb2e4b
7 changed files with 35 additions and 45 deletions
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2
include/net/ip.h
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@ -102,6 +102,8 @@ extern int ip_mc_output(struct sk_buff *skb);
extern int ip_fragment(struct sk_buff *skb, int (*output)(struct sk_buff *));
extern int ip_do_nat(struct sk_buff *skb);
extern void ip_send_check(struct iphdr *ip);
extern int __ip_local_out(struct sk_buff *skb);
extern int ip_local_out(struct sk_buff *skb);
extern int ip_queue_xmit(struct sk_buff *skb, int ipfragok);
extern void ip_init(void);
extern int ip_append_data(struct sock *sk,