net: skb->rtable accessor
Define skb_rtable(const struct sk_buff *skb) accessor to get rtable from skb
Delete skb->rtable field
Setting rtable is not allowed, just set dst instead as rtable is an alias.
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv4/ip_options.c b/net/ipv4/ip_options.c
index 2c88da6..7e1074f 100644
--- a/net/ipv4/ip_options.c
+++ b/net/ipv4/ip_options.c
@@ -102,7 +102,7 @@
sptr = skb_network_header(skb);
dptr = dopt->__data;
- daddr = skb->rtable->rt_spec_dst;
+ daddr = skb_rtable(skb)->rt_spec_dst;
if (sopt->rr) {
optlen = sptr[sopt->rr+1];
@@ -257,7 +257,7 @@
struct rtable *rt = NULL;
if (skb != NULL) {
- rt = skb->rtable;
+ rt = skb_rtable(skb);
optptr = (unsigned char *)&(ip_hdr(skb)[1]);
} else
optptr = opt->__data;
@@ -550,7 +550,7 @@
{
struct ip_options * opt = &(IPCB(skb)->opt);
unsigned char * optptr;
- struct rtable *rt = skb->rtable;
+ struct rtable *rt = skb_rtable(skb);
unsigned char *raw = skb_network_header(skb);
if (opt->rr_needaddr) {
@@ -598,7 +598,7 @@
__be32 nexthop;
struct iphdr *iph = ip_hdr(skb);
unsigned char *optptr = skb_network_header(skb) + opt->srr;
- struct rtable *rt = skb->rtable;
+ struct rtable *rt = skb_rtable(skb);
struct rtable *rt2;
int err;
@@ -623,13 +623,13 @@
}
memcpy(&nexthop, &optptr[srrptr-1], 4);
- rt = skb->rtable;
- skb->rtable = NULL;
+ rt = skb_rtable(skb);
+ skb->dst = NULL;
err = ip_route_input(skb, nexthop, iph->saddr, iph->tos, skb->dev);
- rt2 = skb->rtable;
+ rt2 = skb_rtable(skb);
if (err || (rt2->rt_type != RTN_UNICAST && rt2->rt_type != RTN_LOCAL)) {
ip_rt_put(rt2);
- skb->rtable = rt;
+ skb->dst = &rt->u.dst;
return -EINVAL;
}
ip_rt_put(rt);