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ipv6: Eliminate dst_get_neighbour_noref() usage in ip6_forward(). 

It's only used to get at neigh->primary_key, which in this context is
always going to be the same as rt->rt6i_gateway.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2012-01-27 15:32:19 -08:00
parent 4991969a10
commit c45a3dfb59
1 changed files with 3 additions and 5 deletions
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8
net/ipv6/ip6_output.c
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@ -388,7 +388,6 @@ int ip6_forward(struct sk_buff *skb)
struct ipv6hdr *hdr = ipv6_hdr(skb);
struct inet6_skb_parm *opt = IP6CB(skb);
struct net *net = dev_net(dst->dev);
struct neighbour *n;
u32 mtu;
if (net->ipv6.devconf_all->forwarding == 0)
@ -463,8 +462,7 @@ int ip6_forward(struct sk_buff *skb)
send redirects to source routed frames.
We don't send redirects to frames decapsulated from IPsec.
*/
n = dst_get_neighbour_noref(dst);
if (skb->dev == dst->dev && n && opt->srcrt == 0 && !skb_sec_path(skb)) {
if (skb->dev == dst->dev && opt->srcrt == 0 && !skb_sec_path(skb)) {
struct in6_addr *target = NULL;
struct rt6_info *rt;
@ -474,8 +472,8 @@ int ip6_forward(struct sk_buff *skb)
*/
rt = (struct rt6_info *) dst;
if ((rt->rt6i_flags & RTF_GATEWAY))
target = (struct in6_addr*)&n->primary_key;
if (rt->rt6i_flags & RTF_GATEWAY)
target = &rt->rt6i_gateway;
else
target = &hdr->daddr;