diff options
| author |   Martin KaFai Lau <kafai@fb.com> | 2015-05-22 20:56:06 -0700 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2015-05-25 13:25:35 -0400 |
| commit | d52d3997f843ffefaa8d8462790ffcaca6c74192 (patch) | |
| tree | e7ad34bdd077c3af7d75acb6b6de7199c9672091 /include | |
| parent | ipv6: Break up ip6_rt_copy() (diff) | |
| download | linux-dev-d52d3997f843ffefaa8d8462790ffcaca6c74192.tar.xz linux-dev-d52d3997f843ffefaa8d8462790ffcaca6c74192.zip | |
ipv6: Create percpu rt6_info
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>
Diffstat (limited to 'include')
| -rw-r--r-- | include/net/ip6_fib.h | 3 | ||||
| -rw-r--r-- | include/uapi/linux/ipv6_route.h | 1 |
2 files changed, 3 insertions, 1 deletions
diff --git a/include/net/ip6_fib.h b/include/net/ip6_fib.h index cc8f03c10c43..3b76849c190f 100644 --- a/include/net/ip6_fib.h +++ b/include/net/ip6_fib.h @@ -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; diff --git a/include/uapi/linux/ipv6_route.h b/include/uapi/linux/ipv6_route.h index 2be7bd174751..f6598d1c886e 100644 --- a/include/uapi/linux/ipv6_route.h +++ b/include/uapi/linux/ipv6_route.h @@ -34,6 +34,7 @@ #define RTF_PREF(pref) ((pref) << 27) #define RTF_PREF_MASK 0x18000000 +#define RTF_PCPU 0x40000000 #define RTF_LOCAL 0x80000000 |