From a2c73f7d7b8d1ebfa97b0e6cca44a4911965be2c Mon Sep 17 00:00:00 2001
From: naddy <naddy@openbsd.org>
Date: Sun, 20 Apr 2014 16:48:22 +0000
Subject: [PATCH] move in6_cksum_phdr from in6.h to ip6_output.c to mirror
 in_cksum_phdr ok henning@

---
 sys/netinet6/in6.h        | 51 +--------------------------------------
 sys/netinet6/ip6_output.c | 42 +++++++++++++++++++++++++++++++-
 2 files changed, 42 insertions(+), 51 deletions(-)

diff --git a/sys/netinet6/in6.h b/sys/netinet6/in6.h
index 7a17a3e9c8f..78cd3e32a72 100644
--- a/sys/netinet6/in6.h
+++ b/sys/netinet6/in6.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: in6.h,v 1.70 2014/01/22 14:27:20 naddy Exp $	*/
+/*	$OpenBSD: in6.h,v 1.71 2014/04/20 16:48:22 naddy Exp $	*/
 /*	$KAME: in6.h,v 1.83 2001/03/29 02:55:07 jinmei Exp $	*/
 
 /*
@@ -416,55 +416,6 @@ typedef	__socklen_t	socklen_t;	/* length type for network syscalls */
 #endif /* __BSD_VISIBLE */
 
 #ifdef _KERNEL
-/*
- * in6_cksum_phdr:
- *
- *	Compute significant parts of the IPv6 checksum pseudo-header
- *	for use in a delayed TCP/UDP checksum calculation.
- *
- *	Args:
- *
- *		src		Source IPv6 address
- *		dst		Destination IPv6 address
- *		len		htonl(proto-hdr-len)
- *		nxt		htonl(next-proto-number)
- *
- *	NOTE: We expect the src and dst addresses to be 16-bit
- *	aligned!
- */
-static __inline u_int16_t __attribute__((__unused__))
-in6_cksum_phdr(const struct in6_addr *src, const struct in6_addr *dst,
-    u_int32_t len, u_int32_t nxt)
-{
-	u_int32_t sum = 0;
-	const u_int16_t *w;
-
-	w = (const u_int16_t *) src;
-	sum += w[0];
-	if (!IN6_IS_SCOPE_EMBED(src))
-		sum += w[1];
-	sum += w[2]; sum += w[3]; sum += w[4]; sum += w[5];
-	sum += w[6]; sum += w[7];
-
-	w = (const u_int16_t *) dst;
-	sum += w[0];
-	if (!IN6_IS_SCOPE_EMBED(dst))
-		sum += w[1];
-	sum += w[2]; sum += w[3]; sum += w[4]; sum += w[5];
-	sum += w[6]; sum += w[7];
-
-	sum += (u_int16_t)(len >> 16) + (u_int16_t)(len /*& 0xffff*/);
-
-	sum += (u_int16_t)(nxt >> 16) + (u_int16_t)(nxt /*& 0xffff*/);
-
-	sum = (u_int16_t)(sum >> 16) + (u_int16_t)(sum /*& 0xffff*/);
-
-	if (sum > 0xffff)
-		sum -= 0xffff;
-
-	return (sum);
-}
-
 extern	u_char inet6ctlerrmap[];
 extern	struct ifqueue ip6intrq;	/* IP6 packet input queue */
 extern	struct in6_addr zeroin6_addr;
diff --git a/sys/netinet6/ip6_output.c b/sys/netinet6/ip6_output.c
index edf128a252b..6e38cb1a8c1 100644
--- a/sys/netinet6/ip6_output.c
+++ b/sys/netinet6/ip6_output.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: ip6_output.c,v 1.154 2014/04/14 09:06:42 mpi Exp $	*/
+/*	$OpenBSD: ip6_output.c,v 1.155 2014/04/20 16:48:22 naddy Exp $	*/
 /*	$KAME: ip6_output.c,v 1.172 2001/03/25 09:55:56 itojun Exp $	*/
 
 /*
@@ -132,6 +132,9 @@ int ip6_splithdr(struct mbuf *, struct ip6_exthdrs *);
 int ip6_getpmtu(struct route_in6 *, struct route_in6 *,
 	struct ifnet *, struct in6_addr *, u_long *, int *);
 int copypktopts(struct ip6_pktopts *, struct ip6_pktopts *, int);
+static __inline u_int16_t __attribute__((__unused__))
+    in6_cksum_phdr(const struct in6_addr *, const struct in6_addr *,
+    u_int32_t, u_int32_t);
 void in6_delayed_cksum(struct mbuf *, u_int8_t);
 
 /* Context for non-repeating IDs */
@@ -3202,6 +3205,43 @@ ip6_randomid_init(void)
 	idgen32_init(&ip6_id_ctx);
 }
 
+/*
+ *	Compute significant parts of the IPv6 checksum pseudo-header
+ *	for use in a delayed TCP/UDP checksum calculation.
+ */
+static __inline u_int16_t __attribute__((__unused__))
+in6_cksum_phdr(const struct in6_addr *src, const struct in6_addr *dst,
+    u_int32_t len, u_int32_t nxt)
+{
+	u_int32_t sum = 0;
+	const u_int16_t *w;
+
+	w = (const u_int16_t *) src;
+	sum += w[0];
+	if (!IN6_IS_SCOPE_EMBED(src))
+		sum += w[1];
+	sum += w[2]; sum += w[3]; sum += w[4]; sum += w[5];
+	sum += w[6]; sum += w[7];
+
+	w = (const u_int16_t *) dst;
+	sum += w[0];
+	if (!IN6_IS_SCOPE_EMBED(dst))
+		sum += w[1];
+	sum += w[2]; sum += w[3]; sum += w[4]; sum += w[5];
+	sum += w[6]; sum += w[7];
+
+	sum += (u_int16_t)(len >> 16) + (u_int16_t)(len /*& 0xffff*/);
+
+	sum += (u_int16_t)(nxt >> 16) + (u_int16_t)(nxt /*& 0xffff*/);
+
+	sum = (u_int16_t)(sum >> 16) + (u_int16_t)(sum /*& 0xffff*/);
+
+	if (sum > 0xffff)
+		sum -= 0xffff;
+
+	return (sum);
+}
+
 /*
  * Process a delayed payload checksum calculation.
  */
-- 
2.20.1