[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>

3 files changed, 11 insertions, 0 deletions

diff --git a/include/net/inet_frag.h b/include/net/inet_frag.h
index 2dd1cd4e7f44..cf583cf7e9ef 100644
--- a/include/net/inet_frag.h
+++ b/include/net/inet_frag.h
@@ -49,5 +49,6 @@ void inet_frags_fini(struct inet_frags *);
 void inet_frag_kill(struct inet_frag_queue *q, struct inet_frags *f);
 void inet_frag_destroy(struct inet_frag_queue *q,
                                 struct inet_frags *f, int *work);
+int inet_frag_evictor(struct inet_frags *f);
 
 #endif
diff --git a/include/net/ip.h b/include/net/ip.h
index e6aa955e241c..840dd91b513b 100644
--- a/include/net/ip.h
+++ b/include/net/ip.h
@@ -160,6 +160,7 @@ DECLARE_SNMP_STAT(struct ipstats_mib, ip_statistics);
 #define IP_INC_STATS(field)             SNMP_INC_STATS(ip_statistics, field)
 #define IP_INC_STATS_BH(field)          SNMP_INC_STATS_BH(ip_statistics, field)
 #define IP_INC_STATS_USER(field)        SNMP_INC_STATS_USER(ip_statistics, field)
+#define IP_ADD_STATS_BH(field, val)     SNMP_ADD_STATS_BH(ip_statistics, field, val)
 DECLARE_SNMP_STAT(struct linux_mib, net_statistics);
 #define NET_INC_STATS(field)            SNMP_INC_STATS(net_statistics, field)
 #define NET_INC_STATS_BH(field)         SNMP_INC_STATS_BH(net_statistics, field)
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);