Commit b197df4f authored by Martin KaFai Lau's avatar Martin KaFai Lau Committed by David S. Miller
Browse files

ipv6: Add rt6_get_cookie() function 



Instead of doing the rt6->rt6i_node check whenever we need
to get the route's cookie.  Refactor it into rt6_get_cookie().
It is a prep work to handle FLOWI_FLAG_KNOWN_NH and also
percpu rt6_info later.

Signed-off-by: default avatarMartin KaFai Lau <kafai@fb.com>
Cc: Hannes Frederic Sowa <hannes@stressinduktion.org>
Cc: Steffen Klassert <steffen.klassert@secunet.com>
Cc: Julian Anastasov <ja@ssi.bg>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 45e4fd26

include/net/ip6_fib.h

+5 −0
Original line number Diff line number Diff line
@@ -159,6 +159,11 @@ static inline void rt6_update_expires(struct rt6_info *rt0, int timeout) 
	rt0->rt6i_flags |= RTF_EXPIRES;

}



static inline u32 rt6_get_cookie(const struct rt6_info *rt)

{

	return rt->rt6i_node ? rt->rt6i_node->fn_sernum : 0;

}



static inline void ip6_rt_put(struct rt6_info *rt)

{

	/* dst_release() accepts a NULL parameter.

include/net/ip6_route.h

+1 −1
Original line number Diff line number Diff line
@@ -145,7 +145,7 @@ static inline void __ip6_dst_store(struct sock *sk, struct dst_entry *dst, 
#ifdef CONFIG_IPV6_SUBTREES

	np->saddr_cache = saddr;

#endif

	np->dst_cookie = rt->rt6i_node ? rt->rt6i_node->fn_sernum : 0;

	np->dst_cookie = rt6_get_cookie(rt);

}



static inline void ip6_dst_store(struct sock *sk, struct dst_entry *dst,

net/ipv6/ip6_tunnel.c

+1 −1
Original line number Diff line number Diff line
@@ -151,7 +151,7 @@ EXPORT_SYMBOL_GPL(ip6_tnl_dst_reset); 
void ip6_tnl_dst_store(struct ip6_tnl *t, struct dst_entry *dst)

{

	struct rt6_info *rt = (struct rt6_info *) dst;

	t->dst_cookie = rt->rt6i_node ? rt->rt6i_node->fn_sernum : 0;

	t->dst_cookie = rt6_get_cookie(rt);

	dst_release(t->dst_cache);

	t->dst_cache = dst;

}

net/ipv6/tcp_ipv6.c

+1 −2
Original line number Diff line number Diff line
@@ -99,8 +99,7 @@ static void inet6_sk_rx_dst_set(struct sock *sk, const struct sk_buff *skb) 
		dst_hold(dst);

		sk->sk_rx_dst = dst;

		inet_sk(sk)->rx_dst_ifindex = skb->skb_iif;

		if (rt->rt6i_node)

			inet6_sk(sk)->rx_dst_cookie = rt->rt6i_node->fn_sernum;

		inet6_sk(sk)->rx_dst_cookie = rt6_get_cookie(rt);

	}

}

net/ipv6/xfrm6_policy.c

+2 −4
Original line number Diff line number Diff line
@@ -76,8 +76,7 @@ static int xfrm6_init_path(struct xfrm_dst *path, struct dst_entry *dst, 
{

	if (dst->ops->family == AF_INET6) {

		struct rt6_info *rt = (struct rt6_info *)dst;

		if (rt->rt6i_node)

			path->path_cookie = rt->rt6i_node->fn_sernum;

		path->path_cookie = rt6_get_cookie(rt);

	}



	path->u.rt6.rt6i_nfheader_len = nfheader_len;
@@ -105,8 +104,7 @@ static int xfrm6_fill_dst(struct xfrm_dst *xdst, struct net_device *dev, 
						   RTF_LOCAL);

	xdst->u.rt6.rt6i_metric = rt->rt6i_metric;

	xdst->u.rt6.rt6i_node = rt->rt6i_node;

	if (rt->rt6i_node)

		xdst->route_cookie = rt->rt6i_node->fn_sernum;

	xdst->route_cookie = rt6_get_cookie(rt);

	xdst->u.rt6.rt6i_gateway = rt->rt6i_gateway;

	xdst->u.rt6.rt6i_dst = rt->rt6i_dst;

	xdst->u.rt6.rt6i_src = rt->rt6i_src;

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