From 08c6719ac4955adc91cf30ee1de8d52a06baf495 Mon Sep 17 00:00:00 2001
From: ae <ae@FreeBSD.org>
Date: Tue, 9 Jul 2013 09:59:46 +0000
Subject: Migrate structs in6_ifstat and icmp6_ifstat to PCPU counters.

---
 sys/netinet/icmp6.h    |  4 +++-
 sys/netinet6/in6.c     | 35 ++++++++++++++++++++---------------
 sys/netinet6/in6_var.h | 22 +++++++++++++++++++---
 3 files changed, 42 insertions(+), 19 deletions(-)

diff --git a/sys/netinet/icmp6.h b/sys/netinet/icmp6.h
index 50d480c..15f4c2d 100644
--- a/sys/netinet/icmp6.h
+++ b/sys/netinet/icmp6.h
@@ -692,7 +692,9 @@ void	icmp6_mtudisc_update(struct ip6ctlparam *, int);
 #define icmp6_ifstat_inc(ifp, tag) \
 do {								\
 	if (ifp)						\
-		((struct in6_ifextra *)((ifp)->if_afdata[AF_INET6]))->icmp6_ifstat->tag++; \
+		counter_u64_add(((struct in6_ifextra *)		\
+		    ((ifp)->if_afdata[AF_INET6]))->icmp6_ifstat[\
+		    offsetof(struct icmp6_ifstat, tag) / sizeof(uint64_t)], 1);\
 } while (/*CONSTCOND*/ 0)
 
 #define icmp6_ifoutstat_inc(ifp, type, code) \
diff --git a/sys/netinet6/in6.c b/sys/netinet6/in6.c
index 9e005c5..e0a9128 100644
--- a/sys/netinet6/in6.c
+++ b/sys/netinet6/in6.c
@@ -570,10 +570,10 @@ in6_control(struct socket *so, u_long cmd, caddr_t data,
 			error = EINVAL;
 			goto out;
 		}
-		bzero(&ifr->ifr_ifru.ifru_stat,
-		    sizeof(ifr->ifr_ifru.ifru_stat));
-		ifr->ifr_ifru.ifru_stat =
-		    *((struct in6_ifextra *)ifp->if_afdata[AF_INET6])->in6_ifstat;
+		COUNTER_ARRAY_COPY(((struct in6_ifextra *)
+		    ifp->if_afdata[AF_INET6])->in6_ifstat,
+		    &ifr->ifr_ifru.ifru_stat,
+		    sizeof(struct in6_ifstat) / sizeof(uint64_t));
 		break;
 
 	case SIOCGIFSTAT_ICMP6:
@@ -581,10 +581,10 @@ in6_control(struct socket *so, u_long cmd, caddr_t data,
 			error = EINVAL;
 			goto out;
 		}
-		bzero(&ifr->ifr_ifru.ifru_icmp6stat,
-		    sizeof(ifr->ifr_ifru.ifru_icmp6stat));
-		ifr->ifr_ifru.ifru_icmp6stat =
-		    *((struct in6_ifextra *)ifp->if_afdata[AF_INET6])->icmp6_ifstat;
+		COUNTER_ARRAY_COPY(((struct in6_ifextra *)
+		    ifp->if_afdata[AF_INET6])->icmp6_ifstat,
+		    &ifr->ifr_ifru.ifru_icmp6stat,
+		    sizeof(struct icmp6_ifstat) / sizeof(uint64_t));
 		break;
 
 	case SIOCGIFALIFETIME_IN6:
@@ -2749,14 +2749,15 @@ in6_domifattach(struct ifnet *ifp)
 	ext = (struct in6_ifextra *)malloc(sizeof(*ext), M_IFADDR, M_WAITOK);
 	bzero(ext, sizeof(*ext));
 
-	ext->in6_ifstat = (struct in6_ifstat *)malloc(sizeof(struct in6_ifstat),
-	    M_IFADDR, M_WAITOK);
-	bzero(ext->in6_ifstat, sizeof(*ext->in6_ifstat));
+	ext->in6_ifstat = malloc(sizeof(struct in6_ifstat), M_IFADDR,
+	    M_WAITOK);
+	COUNTER_ARRAY_ALLOC(ext->in6_ifstat,
+	    sizeof(struct in6_ifstat) / sizeof(uint64_t), M_WAITOK);
 
-	ext->icmp6_ifstat =
-	    (struct icmp6_ifstat *)malloc(sizeof(struct icmp6_ifstat),
-	    M_IFADDR, M_WAITOK);
-	bzero(ext->icmp6_ifstat, sizeof(*ext->icmp6_ifstat));
+	ext->icmp6_ifstat = malloc(sizeof(struct icmp6_ifstat), M_IFADDR,
+	    M_WAITOK);
+	COUNTER_ARRAY_ALLOC(ext->icmp6_ifstat,
+	    sizeof(struct icmp6_ifstat) / sizeof(uint64_t), M_WAITOK);
 
 	ext->nd_ifinfo = nd6_ifattach(ifp);
 	ext->scope6_id = scope6_ifattach(ifp);
@@ -2781,7 +2782,11 @@ in6_domifdetach(struct ifnet *ifp, void *aux)
 	scope6_ifdetach(ext->scope6_id);
 	nd6_ifdetach(ext->nd_ifinfo);
 	lltable_free(ext->lltable);
+	COUNTER_ARRAY_FREE(ext->in6_ifstat,
+	    sizeof(struct in6_ifstat) / sizeof(uint64_t));
 	free(ext->in6_ifstat, M_IFADDR);
+	COUNTER_ARRAY_FREE(ext->icmp6_ifstat,
+	    sizeof(struct icmp6_ifstat) / sizeof(uint64_t));
 	free(ext->icmp6_ifstat, M_IFADDR);
 	free(ext, M_IFADDR);
 }
diff --git a/sys/netinet6/in6_var.h b/sys/netinet6/in6_var.h
index 766082d..e2f356d 100644
--- a/sys/netinet6/in6_var.h
+++ b/sys/netinet6/in6_var.h
@@ -98,14 +98,28 @@ struct scope6_id;
 struct lltable;
 struct mld_ifinfo;
 
+#ifdef _KERNEL
+#include <sys/counter.h>
+
+struct in6_ifextra {
+	counter_u64_t *in6_ifstat;
+	counter_u64_t *icmp6_ifstat;
+	struct nd_ifinfo *nd_ifinfo;
+	struct scope6_id *scope6_id;
+	struct lltable *lltable;
+	struct mld_ifinfo *mld_ifinfo;
+};
+#else
+
 struct in6_ifextra {
-	struct in6_ifstat *in6_ifstat;
-	struct icmp6_ifstat *icmp6_ifstat;
+	void *in6_ifstat;
+	void *icmp6_ifstat;
 	struct nd_ifinfo *nd_ifinfo;
 	struct scope6_id *scope6_id;
 	struct lltable *lltable;
 	struct mld_ifinfo *mld_ifinfo;
 };
+#endif /* !_KERNEL */
 
 #define	LLTABLE6(ifp)	(((struct in6_ifextra *)(ifp)->if_afdata[AF_INET6])->lltable)
 
@@ -537,7 +551,9 @@ extern struct rwlock in6_ifaddr_lock;
 #define in6_ifstat_inc(ifp, tag) \
 do {								\
 	if (ifp)						\
-		((struct in6_ifextra *)((ifp)->if_afdata[AF_INET6]))->in6_ifstat->tag++; \
+		counter_u64_add(((struct in6_ifextra *)		\
+		    ((ifp)->if_afdata[AF_INET6]))->in6_ifstat[	\
+		    offsetof(struct in6_ifstat, tag) / sizeof(uint64_t)], 1);\
 } while (/*CONSTCOND*/ 0)
 
 extern u_char inet6ctlerrmap[];
-- 
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