IPVS: netns, connection hash got net as param.

Connection hash table is now name space aware.
i.e. net ptr >> 8 is xor:ed to the hash,
and this is the first param to be compared.
The net struct is 0xa40 in size ( a little bit smaller for 32 bit arch:s)
and cache-line aligned, so a ptr >> 5 might be a more clever solution ?

All lookups where net is compared uses net_eq() which returns 1 when netns
is disabled, and the compiler seems to do something clever in that case.

ip_vs_conn_fill_param() have *net as first param now.

Three new inlines added to keep conn struct smaller
when names space is disabled.
- ip_vs_conn_net()
- ip_vs_conn_net_set()
- ip_vs_conn_net_eq()

*v3
  moved net compare to the end in "fast path"

Signed-off-by: Hans Schillstrom <hans.schillstrom@ericsson.com>
Acked-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Simon Horman <horms@verge.net.au>

1 files changed, 2 insertions, 0 deletions

diff --git a/include/net/netns/ip_vs.h b/include/net/netns/ip_vs.h
index bd1dad872178..1acfb334e69b 100644
--- a/include/net/netns/ip_vs.h
+++ b/include/net/netns/ip_vs.h
@@ -66,6 +66,8 @@ struct netns_ipvs {
         struct ip_vs_cpu_stats __percpu *cpustats;   /* Stats per cpu */
         seqcount_t                      *ustats_seq; /* u64 read retry */
 
+        /* ip_vs_conn */
+        atomic_t                conn_count;         /*  connection counter */
         /* ip_vs_lblc */
         int                     sysctl_lblc_expiration;
         struct ctl_table_header *lblc_ctl_header;