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>

1 files changed, 8 insertions, 8 deletions

diff --git a/net/ipv4/ip_options.c b/net/ipv4/ip_options.c
index 2c88da6e7862..7e1074ffdbd1 100644
--- a/net/ipv4/ip_options.c
+++ b/net/ipv4/ip_options.c
@@ -102,7 +102,7 @@ int ip_options_echo(struct ip_options * dopt, struct sk_buff * skb)
         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 @@ int ip_options_compile(struct net *net,
         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 @@ void ip_forward_options(struct sk_buff *skb)
 {
         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 @@ 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 = skb->rtable;
+        struct rtable *rt = skb_rtable(skb);
         struct rtable *rt2;
         int err;
 
@@ -623,13 +623,13 @@ int ip_options_rcv_srr(struct sk_buff *skb)
                 }
                 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);