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ipv6: Remove external dependency on rt6i_dst and rt6i_src

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This patch removes the assumptions that the returned rt is always
a RTF_CACHE entry with the rt6i_dst and rt6i_src containing the
destination and source address.  The dst and src can be recovered from
the calling site.

We may consider to rename (rt6i_dst, rt6i_src) to
(rt6i_key_dst, rt6i_key_src) later.

Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Reviewed-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Cc: Steffen Klassert <steffen.klassert@secunet.com>
Cc: Julian Anastasov <ja@ssi.bg>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Martin KaFai Lau 2015-05-22 20:55:57 -07:00 • committed by David S. Miller
parent 286c2349f6
commit fd0273d793
9 changed files with 25 additions and 17 deletions
Download patch file Download diff file Expand all files Collapse all files

10
net/ipv6/output_core.c
View file

@ -10,7 +10,8 @@
#include <net/secure_seq.h>
static u32 __ipv6_select_ident(struct net *net, u32 hashrnd,
struct in6_addr *dst, struct in6_addr *src)
const struct in6_addr *dst,
const struct in6_addr *src)
{
u32 hash, id;
@ -60,15 +61,16 @@ void ipv6_proxy_select_ident(struct net *net, struct sk_buff *skb)
}
EXPORT_SYMBOL_GPL(ipv6_proxy_select_ident);
u32 ipv6_select_ident(struct net *net, struct rt6_info *rt)
u32 ipv6_select_ident(struct net *net,
const struct in6_addr *daddr,
const struct in6_addr *saddr)
{
static u32 ip6_idents_hashrnd __read_mostly;
u32 id;
net_get_random_once(&ip6_idents_hashrnd, sizeof(ip6_idents_hashrnd));
id = __ipv6_select_ident(net, ip6_idents_hashrnd, &rt->rt6i_dst.addr,
&rt->rt6i_src.addr);
id = __ipv6_select_ident(net, ip6_idents_hashrnd, daddr, saddr);
return htonl(id);
}
EXPORT_SYMBOL(ipv6_select_ident);