From 8a0fe2bd530f51675a95b73d96288074c22de5b3 Mon Sep 17 00:00:00 2001
From: Alexander Bluhm <bluhm@cvs.openbsd.org>
Date: Sat, 27 Jan 2024 21:13:47 +0000
Subject: Declare address parameter in TCP SYN cache const.

tcp6_ctlinput() casted a constant sockaddr_sin6 to non-const sockaddr.
sa6_src may be &sa6_any which lives in read-only data section.
Better pass down the const addresses to syn_cache_lookup().  They
are needed for hash lookup and are not modified.

OK mvs@
---
 sys/netinet6/in6.h | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

(limited to 'sys/netinet6/in6.h')

diff --git a/sys/netinet6/in6.h b/sys/netinet6/in6.h
index 936ef6c9465..98384bfd352 100644
--- a/sys/netinet6/in6.h
+++ b/sys/netinet6/in6.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: in6.h,v 1.111 2023/11/28 13:23:20 bluhm Exp $	*/
+/*	$OpenBSD: in6.h,v 1.112 2024/01/27 21:13:46 bluhm Exp $	*/
 /*	$KAME: in6.h,v 1.83 2001/03/29 02:55:07 jinmei Exp $	*/
 
 /*
@@ -459,6 +459,12 @@ sin6tosa(struct sockaddr_in6 *sin6)
 	return ((struct sockaddr *)(sin6));
 }
 
+static inline const struct sockaddr *
+sin6tosa_const(const struct sockaddr_in6 *sin6)
+{
+	return ((const struct sockaddr *)(sin6));
+}
+
 static inline struct in6_ifaddr *
 ifatoia6(struct ifaddr *ifa)
 {
-- 
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