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ipv6: Create percpu rt6_info

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After the patch
'ipv6: Only create RTF_CACHE routes after encountering pmtu exception',
we need to compensate the performance hit (bouncing dst->__refcnt).

Signed-off-by: Martin 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: David S. Miller <davem@davemloft.net>
This commit is contained in:
Martin KaFai Lau
2015-05-22 20:56:06 -07:00
committed by David S. Miller
parent 83a09abd1a
commit d52d3997f8
4 changed files with 142 additions and 18 deletions
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3
include/net/ip6_fib.h
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@@ -124,6 +124,7 @@ struct rt6_info {
struct uncached_list *rt6i_uncached_list;
struct inet6_dev *rt6i_idev;
struct rt6_info * __percpu *rt6i_pcpu;
u32 rt6i_metric;
u32 rt6i_pmtu;
@@ -164,7 +165,7 @@ static inline void rt6_update_expires(struct rt6_info *rt0, int timeout)
static inline u32 rt6_get_cookie(const struct rt6_info *rt)
{
if (unlikely(rt->dst.flags & DST_NOCACHE))
if (rt->rt6i_flags & RTF_PCPU || unlikely(rt->dst.flags & DST_NOCACHE))
rt = (struct rt6_info *)(rt->dst.from);
return rt->rt6i_node ? rt->rt6i_node->fn_sernum : 0;