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ipv4: Kill ip_rt_redirect(). 

No longer needed, as the protocol handlers now all properly
propagate the redirect back into the routing code.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2012-07-11 21:30:08 -07:00
parent 55be7a9c60
commit 1f42539d25
3 changed files with 0 additions and 46 deletions
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1
include/net/route.h
View File

@ -108,7 +108,6 @@ extern struct ip_rt_acct __percpu *ip_rt_acct;
struct in_device;
extern int ip_rt_init(void);
extern void ip_rt_redirect(struct sk_buff *skb, __be32 new_gw);
extern void rt_cache_flush(struct net *net, int how);
extern void rt_cache_flush_batch(struct net *net);
extern struct rtable *__ip_route_output_key(struct net *, struct flowi4 *flp);

1
net/ipv4/icmp.c
View File

@ -763,7 +763,6 @@ static void icmp_redirect(struct sk_buff *skb)
if (!pskb_may_pull(skb, sizeof(struct iphdr)))
return;
ip_rt_redirect(skb, icmp_hdr(skb)->un.gateway);
icmp_socket_deliver(skb, icmp_hdr(skb)->un.gateway);
}

44
net/ipv4/route.c
View File

@ -1345,50 +1345,6 @@ reject_redirect:
;
}
/* called in rcu_read_lock() section */
void ip_rt_redirect(struct sk_buff *skb, __be32 new_gw)
{
const struct iphdr *iph = (const struct iphdr *) skb->data;
__be32 daddr = iph->daddr;
__be32 saddr = iph->saddr;
struct net_device *dev = skb->dev;
int ikeys[2] = { dev->ifindex, 0 };
__be32 skeys[2] = { saddr, 0 };
struct net *net;
int s, i;
net = dev_net(dev);
for (s = 0; s < 2; s++) {
for (i = 0; i < 2; i++) {
unsigned int hash;
struct rtable __rcu **rthp;
struct rtable *rt;
hash = rt_hash(daddr, skeys[s], ikeys[i], rt_genid(net));
rthp = &rt_hash_table[hash].chain;
while ((rt = rcu_dereference(*rthp)) != NULL) {
rthp = &rt->dst.rt_next;
if (rt->rt_key_dst != daddr ||
rt->rt_key_src != skeys[s] ||
rt->rt_oif != ikeys[i] ||
rt_is_input_route(rt) ||
rt_is_expired(rt) ||
!net_eq(dev_net(rt->dst.dev), net) ||
rt->dst.error ||
rt->dst.dev != dev)
continue;
ip_do_redirect(&rt->dst, skb);
}
}
}
return;
}
static struct dst_entry *ipv4_negative_advice(struct dst_entry *dst)
{
struct rtable *rt = (struct rtable *)dst;