[INET]: Consolidate the xxx_evictor

The evictors collect some statistics for ipv4 and ipv6,
so make it return the number of evicted queues and account
them all at once in the caller.

The XXX_ADD_STATS_BH() macros are just for this case,
but maybe there are places in code, that can make use of
them as well.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 9 insertions, 0 deletions

diff --git a/include/net/ipv6.h b/include/net/ipv6.h
index b29d76c715d2..a0f1042037f2 100644
--- a/include/net/ipv6.h
+++ b/include/net/ipv6.h
@@ -120,12 +120,21 @@ extern int sysctl_mld_max_msf;
         SNMP_INC_STATS##modifier(statname##_statistics, (field));       \
 })
 
+#define _DEVADD(statname, modifier, idev, field, val)                   \
+({                                                                      \
+        struct inet6_dev *_idev = (idev);                               \
+        if (likely(_idev != NULL))                                      \
+                SNMP_ADD_STATS##modifier((_idev)->stats.statname, (field), (val)); \
+        SNMP_ADD_STATS##modifier(statname##_statistics, (field), (val));\
+})
+
 /* MIBs */
 DECLARE_SNMP_STAT(struct ipstats_mib, ipv6_statistics);
 
 #define IP6_INC_STATS(idev,field)       _DEVINC(ipv6, , idev, field)
 #define IP6_INC_STATS_BH(idev,field)    _DEVINC(ipv6, _BH, idev, field)
 #define IP6_INC_STATS_USER(idev,field)  _DEVINC(ipv6, _USER, idev, field)
+#define IP6_ADD_STATS_BH(idev,field,val) _DEVADD(ipv6, _BH, idev, field, val)
 
 DECLARE_SNMP_STAT(struct icmpv6_mib, icmpv6_statistics);
 DECLARE_SNMP_STAT(struct icmpv6msg_mib, icmpv6msg_statistics);