upstream commit

Add MAXIMUM(), MINIMUM(), and ROUNDUP() to misc.h, then
use those definitions rather than pulling <sys/param.h> and unknown namespace
pollution. ok djm markus dtucker

Upstream-ID: 712cafa816c9f012a61628b66b9fbd5687223fb8
diff --git a/kexgexc.c b/kexgexc.c
index 71ff133..ad0d1c8 100644
--- a/kexgexc.c
+++ b/kexgexc.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: kexgexc.c,v 1.22 2015/05/26 23:23:40 dtucker Exp $ */
+/* $OpenBSD: kexgexc.c,v 1.23 2016/09/12 01:22:38 deraadt Exp $ */
 /*
  * Copyright (c) 2000 Niels Provos.  All rights reserved.
  * Copyright (c) 2001 Markus Friedl.  All rights reserved.
@@ -28,7 +28,6 @@
 
 #ifdef WITH_OPENSSL
 
-#include <sys/param.h>
 #include <sys/types.h>
 
 #include <openssl/dh.h>
@@ -50,6 +49,7 @@
 #include "dispatch.h"
 #include "ssherr.h"
 #include "sshbuf.h"
+#include "misc.h"
 
 static int input_kex_dh_gex_group(int, u_int32_t, void *);
 static int input_kex_dh_gex_reply(int, u_int32_t, void *);
@@ -67,7 +67,7 @@
 	kex->max = DH_GRP_MAX;
 	kex->nbits = nbits;
 	if (datafellows & SSH_BUG_DHGEX_LARGE)
-		kex->nbits = MIN(kex->nbits, 4096);
+		kex->nbits = MINIMUM(kex->nbits, 4096);
 	/* New GEX request */
 	if ((r = sshpkt_start(ssh, SSH2_MSG_KEX_DH_GEX_REQUEST)) != 0 ||
 	    (r = sshpkt_put_u32(ssh, kex->min)) != 0 ||