diff options
| author | Eric Dumazet <dada1@cosmosbay.com> | 2008-03-05 18:30:47 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-03-05 18:30:47 -0800 |
| commit | ee6b967301b4aa5d4a4b61e2f682f086266db9fb (patch) | |
| tree | 197c2430f87733dc80d00d1971f1be2a0e562358 /net/ipv4/ip_options.c | |
| parent | a05c44f6d5fb6cd29da04f96bf5ffaa05f545ac5 (diff) | |
[IPV4]: Add 'rtable' field in struct sk_buff to alias 'dst' and avoid casts
(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>
Diffstat (limited to 'net/ipv4/ip_options.c')
| -rw-r--r-- | net/ipv4/ip_options.c | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/net/ipv4/ip_options.c b/net/ipv4/ip_options.c index baaedd9689a..df93a9c2efd 100644 --- a/net/ipv4/ip_options.c +++ b/net/ipv4/ip_options.c @@ -107,7 +107,7 @@ int ip_options_echo(struct ip_options * dopt, struct sk_buff * skb) sptr = skb_network_header(skb); dptr = dopt->__data; - daddr = ((struct rtable*)skb->dst)->rt_spec_dst; + daddr = skb->rtable->rt_spec_dst; if (sopt->rr) { optlen = sptr[sopt->rr+1]; @@ -258,7 +258,7 @@ int ip_options_compile(struct ip_options * opt, struct sk_buff * skb) unsigned char * optptr; int optlen; unsigned char * pp_ptr = NULL; - struct rtable *rt = skb ? (struct rtable*)skb->dst : NULL; + struct rtable *rt = skb ? skb->rtable : NULL; if (!opt) { opt = &(IPCB(skb)->opt); @@ -558,7 +558,7 @@ void ip_forward_options(struct sk_buff *skb) { struct ip_options * opt = &(IPCB(skb)->opt); unsigned char * optptr; - struct rtable *rt = (struct rtable*)skb->dst; + struct rtable *rt = skb->rtable; unsigned char *raw = skb_network_header(skb); if (opt->rr_needaddr) { @@ -606,7 +606,7 @@ int ip_options_rcv_srr(struct sk_buff *skb) __be32 nexthop; struct iphdr *iph = ip_hdr(skb); unsigned char *optptr = skb_network_header(skb) + opt->srr; - struct rtable *rt = (struct rtable*)skb->dst; + struct rtable *rt = skb->rtable; struct rtable *rt2; int err; @@ -631,13 +631,13 @@ int ip_options_rcv_srr(struct sk_buff *skb) } memcpy(&nexthop, &optptr[srrptr-1], 4); - rt = (struct rtable*)skb->dst; - skb->dst = NULL; + rt = skb->rtable; + skb->rtable = NULL; err = ip_route_input(skb, nexthop, iph->saddr, iph->tos, skb->dev); - rt2 = (struct rtable*)skb->dst; + rt2 = skb->rtable; if (err || (rt2->rt_type != RTN_UNICAST && rt2->rt_type != RTN_LOCAL)) { ip_rt_put(rt2); - skb->dst = &rt->u.dst; + skb->rtable = rt; return -EINVAL; } ip_rt_put(rt); |