Module Name:    src
Committed By:   yamaguchi
Date:           Thu Apr  4 07:55:32 UTC 2024

Modified Files:
        src/sbin/ifconfig: lagg.c
        src/sys/net/lagg: if_lagg.c if_lagg.h

Log Message:
lagg(4): use flexible array member


To generate a diff of this commit:
cvs rdiff -u -r1.4 -r1.5 src/sbin/ifconfig/lagg.c
cvs rdiff -u -r1.57 -r1.58 src/sys/net/lagg/if_lagg.c
cvs rdiff -u -r1.3 -r1.4 src/sys/net/lagg/if_lagg.h

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.

Modified files:

Index: src/sbin/ifconfig/lagg.c
diff -u src/sbin/ifconfig/lagg.c:1.4 src/sbin/ifconfig/lagg.c:1.5
--- src/sbin/ifconfig/lagg.c:1.4	Wed Dec  6 05:57:39 2023
+++ src/sbin/ifconfig/lagg.c	Thu Apr  4 07:55:32 2024
@@ -1,4 +1,4 @@
-/*	$NetBSD: lagg.c,v 1.4 2023/12/06 05:57:39 yamaguchi Exp $	*/
+/*	$NetBSD: lagg.c,v 1.5 2024/04/04 07:55:32 yamaguchi Exp $	*/
 
 /*
  * Copyright (c) 2021 Internet Initiative Japan Inc.
@@ -28,7 +28,7 @@
 
 #include <sys/cdefs.h>
 #if !defined(lint)
-__RCSID("$NetBSD: lagg.c,v 1.4 2023/12/06 05:57:39 yamaguchi Exp $");
+__RCSID("$NetBSD: lagg.c,v 1.5 2024/04/04 07:55:32 yamaguchi Exp $");
 #endif /* !defined(lint) */
 
 #include <sys/param.h>
@@ -393,7 +393,11 @@ setlaggproto(prop_dictionary_t env, prop
 static int
 setlaggport(prop_dictionary_t env, prop_dictionary_t oenv __unused)
 {
-	struct lagg_req req;
+	struct {
+		struct lagg_req req;
+		struct laggreqport port[1];
+	} _req;
+	struct lagg_req *req;
 	struct laggreqport *rp;
 	const char *ifname;
 	enum lagg_ioctl ioc;
@@ -406,9 +410,10 @@ setlaggport(prop_dictionary_t env, prop_
 		return -1;
 	}
 
-	memset(&req, 0, sizeof(req));
-	req.lrq_nports = 1;
-	rp = &req.lrq_reqports[0];
+	memset(&_req, 0, sizeof(_req));
+	req = (struct lagg_req *)&_req;
+	rp = &req->lrq_reqports[0];
+
 	strlcpy(rp->rp_portname, ifname, sizeof(rp->rp_portname));
 	ioc = LAGGIOC_NOCMD;
 
@@ -426,8 +431,8 @@ setlaggport(prop_dictionary_t env, prop_
 	}
 
 	if (ioc != LAGGIOC_NOCMD) {
-		req.lrq_ioctl = ioc;
-		if (indirect_ioctl(env, SIOCSLAGG, &req) == -1) {
+		req->lrq_ioctl = ioc;
+		if (indirect_ioctl(env, SIOCSLAGG, req) == -1) {
 			if (lagg_debug) {
 				warn("cmd=%d", ioc);
 			}

Index: src/sys/net/lagg/if_lagg.c
diff -u src/sys/net/lagg/if_lagg.c:1.57 src/sys/net/lagg/if_lagg.c:1.58
--- src/sys/net/lagg/if_lagg.c:1.57	Fri Dec  1 09:27:17 2023
+++ src/sys/net/lagg/if_lagg.c	Thu Apr  4 07:55:32 2024
@@ -1,4 +1,4 @@
-/*	$NetBSD: if_lagg.c,v 1.57 2023/12/01 09:27:17 yamaguchi Exp $	*/
+/*	$NetBSD: if_lagg.c,v 1.58 2024/04/04 07:55:32 yamaguchi Exp $	*/
 
 /*
  * Copyright (c) 2005, 2006 Reyk Floeter <r...@openbsd.org>
@@ -20,7 +20,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: if_lagg.c,v 1.57 2023/12/01 09:27:17 yamaguchi Exp $");
+__KERNEL_RCSID(0, "$NetBSD: if_lagg.c,v 1.58 2024/04/04 07:55:32 yamaguchi Exp $");
 
 #ifdef _KERNEL_OPT
 #include "opt_inet.h"
@@ -693,7 +693,7 @@ lagg_ioctl(struct ifnet *ifp, u_long cmd
 			break;
 
 		nports = laggreq.lrq_nports;
-		if (nports > 1) {
+		if (nports > 0) {
 			allocsiz = sizeof(struct lagg_req)
 			    + sizeof(struct laggreqport) * nports;
 			buf = kmem_alloc(allocsiz, KM_SLEEP);

Index: src/sys/net/lagg/if_lagg.h
diff -u src/sys/net/lagg/if_lagg.h:1.3 src/sys/net/lagg/if_lagg.h:1.4
--- src/sys/net/lagg/if_lagg.h:1.3	Mon Nov  8 06:29:16 2021
+++ src/sys/net/lagg/if_lagg.h	Thu Apr  4 07:55:32 2024
@@ -1,4 +1,4 @@
-/*	$NetBSD: if_lagg.h,v 1.3 2021/11/08 06:29:16 yamaguchi Exp $	*/
+/*	$NetBSD: if_lagg.h,v 1.4 2024/04/04 07:55:32 yamaguchi Exp $	*/
 
 /*
  * Copyright (c) 2005, 2006 Reyk Floeter <r...@openbsd.org>
@@ -184,7 +184,7 @@ struct lagg_req {
 	lagg_proto		 lrq_proto;
 	size_t			 lrq_nports;
 	struct laggreqproto	 lrq_reqproto;
-	struct laggreqport	 lrq_reqports[1];
+	struct laggreqport	 lrq_reqports[];
 };
 
 #define	SIOCGLAGG		SIOCGIFGENERIC

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