Module Name: src
Committed By: riastradh
Date: Mon Oct 9 11:55:34 UTC 2023
Modified Files:
src/sys/net: if.h
Log Message:
net/if.h: Explain the IFF_ALLMULTI situation.
No functional change intended.
To generate a diff of this commit:
cvs rdiff -u -r1.304 -r1.305 src/sys/net/if.h
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/net/if.h
diff -u src/sys/net/if.h:1.304 src/sys/net/if.h:1.305
--- src/sys/net/if.h:1.304 Fri Nov 25 08:39:32 2022
+++ src/sys/net/if.h Mon Oct 9 11:55:34 2023
@@ -1,4 +1,4 @@
-/* $NetBSD: if.h,v 1.304 2022/11/25 08:39:32 knakahara Exp $ */
+/* $NetBSD: if.h,v 1.305 2023/10/09 11:55:34 riastradh Exp $ */
/*-
* Copyright (c) 1999, 2000, 2001 The NetBSD Foundation, Inc.
@@ -459,7 +459,15 @@ typedef struct ifnet {
#define IFF_RUNNING 0x0040 /* resources allocated */
#define IFF_NOARP 0x0080 /* no address resolution protocol */
#define IFF_PROMISC 0x0100 /* receive all packets */
-#define IFF_ALLMULTI 0x0200 /* receive all multicast packets */
+#define IFF_ALLMULTI 0x0200 /* OBSOLETE -- DO NOT USE */
+/*
+ * IFF_ALLMULTI obsoleted on 2019-05-15 -- existing non-MP-safe drivers
+ * can use it for themselves under IFNET_LOCK, but they should be
+ * converted to use ETHER_F_ALLMULTI under ETHER_LOCK instead. For
+ * compatibility with existing drivers, if_ethersubr and if_arcsubr
+ * will set IFF_ALLMULTI according to other flags, but you should not
+ * rely on this.
+ */
#define IFF_OACTIVE 0x0400 /* transmission in progress */
#define IFF_SIMPLEX 0x0800 /* can't hear own transmissions */
#define IFF_LINK0 0x1000 /* per link layer defined bit */
