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[IPV4]: Add 'rtable' field in struct sk_buff to alias 'dst' and avoid casts

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(Anonymous) unions can help us to avoid ugly casts.

A common cast it the (struct rtable *)skb->dst one.

Defining an union like  :
union {
     struct dst_entry *dst;
     struct rtable *rtable;
};
permits to use skb->rtable in place.

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet 2008-03-05 18:30:47 -08:00 • committed by David S. Miller
parent a05c44f6d5
commit ee6b967301
23 changed files with 69 additions and 68 deletions
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2
net/ipv4/ipip.c
View file

@ -528,7 +528,7 @@ static int ipip_tunnel_xmit(struct sk_buff *skb, struct net_device *dev)
if (!dst) {
/* NBMA tunnel */
if ((rt = (struct rtable*)skb->dst) == NULL) {
if ((rt = skb->rtable) == NULL) {
tunnel->stat.tx_fifo_errors++;
goto tx_error;
}