Wake On Lan (WOL) infrastructure

Submitted by:	Stefan Sperling <stsp@stsp.name>
Reviewed by:	brooks

3 files changed, 31 insertions, 4 deletions

diff --git a/sbin/ifconfig/ifconfig.8 b/sbin/ifconfig/ifconfig.8
index 05f0dc1..4dfafc1 100644
--- a/sbin/ifconfig/ifconfig.8
+++ b/sbin/ifconfig/ifconfig.8
@@ -28,7 +28,7 @@
 .\"     From: @(#)ifconfig.8	8.3 (Berkeley) 1/5/94
 .\" $FreeBSD$
 .\"
-.Dd October 31, 2007
+.Dd December 8, 2007
 .Dt IFCONFIG 8
 .Os
 .Sh NAME
@@ -387,6 +387,21 @@ large receive offloading, enable LRO on the interface.
 If the driver supports
 .Xr tcp 4
 large receive offloading, disable LRO on the interface.
+.It Cm wol , wol_ucast , wol_mcast , wol_magic
+Enable Wake On Lan (WOL) support, if available.
+WOL is a facility whereby a machine in a low power state may be woken
+in response to a received packet.
+There are three types of packets that may wake a system:
+ucast (directed solely to the machine's mac address),
+mcast (directed to a broadcast or multicast address),
+or
+magic (unicast or multicast frames with a ``magic contents'').
+Not all devices support WOL, those that do indicate the mechanisms
+they support in their capabilities.
+.Cm wol
+is a synonym for enabling all available WOL mechanisms.
+To disable WOL use
+.Fl wol .
 .It Cm vlanmtu , vlanhwtag
 If the driver offers user-configurable VLAN support, enable
 reception of extended frames or tag processing in hardware,
diff --git a/sbin/ifconfig/ifconfig.c b/sbin/ifconfig/ifconfig.c
index 3ea1b31..3676396 100644
--- a/sbin/ifconfig/ifconfig.c
+++ b/sbin/ifconfig/ifconfig.c
@@ -746,7 +746,7 @@ setifname(const char *val, int dummy __unused, int s,
 
 #define	IFCAPBITS \
 "\020\1RXCSUM\2TXCSUM\3NETCONS\4VLAN_MTU\5VLAN_HWTAGGING\6JUMBO_MTU\7POLLING" \
-"\10VLAN_HWCSUM\11TSO4\12TSO6\13LRO"
+"\10VLAN_HWCSUM\11TSO4\12TSO6\13LRO\14WOL_UCAST\15WOL_MCAST\16WOL_MAGIC"
 
 /*
  * Print the status of the interface.  If an address family was
@@ -991,6 +991,14 @@ static struct cmd basic_cmds[] = {
 	DEF_CMD("-tso",		-IFCAP_TSO,	setifcap),
 	DEF_CMD("lro",		IFCAP_LRO,	setifcap),
 	DEF_CMD("-lro",		-IFCAP_LRO,	setifcap),
+	DEF_CMD("wol",		IFCAP_WOL,	setifcap),
+	DEF_CMD("-wol",		-IFCAP_WOL,	setifcap),
+	DEF_CMD("wol_ucast",	IFCAP_WOL_UCAST,	setifcap),
+	DEF_CMD("-wol_ucast",	-IFCAP_WOL_UCAST,	setifcap),
+	DEF_CMD("wol_mcast",	IFCAP_WOL_MCAST,	setifcap),
+	DEF_CMD("-wol_mcast",	-IFCAP_WOL_MCAST,	setifcap),
+	DEF_CMD("wol_magic",	IFCAP_WOL_MAGIC,	setifcap),
+	DEF_CMD("-wol_magic",	-IFCAP_WOL_MAGIC,	setifcap),
 	DEF_CMD("normal",	-IFF_LINK0,	setifflags),
 	DEF_CMD("compress",	IFF_LINK0,	setifflags),
 	DEF_CMD("noicmp",	IFF_LINK1,	setifflags),
diff --git a/sys/net/if.h b/sys/net/if.h
index a5a0e96..c649fca 100644
--- a/sys/net/if.h
+++ b/sys/net/if.h
@@ -209,9 +209,13 @@ struct if_data {
 #define	IFCAP_TSO4		0x0100	/* can do TCP Segmentation Offload */
 #define	IFCAP_TSO6		0x0200	/* can do TCP6 Segmentation Offload */
 #define	IFCAP_LRO		0x0400	/* can do Large Receive Offload */
+#define	IFCAP_WOL_UCAST		0x0800	/* wake on any unicast frame */
+#define	IFCAP_WOL_MCAST		0x1000	/* wake on any multicast frame */
+#define	IFCAP_WOL_MAGIC		0x2000	/* wake on any Magic Packet */
 
-#define IFCAP_HWCSUM		(IFCAP_RXCSUM | IFCAP_TXCSUM)
-#define	IFCAP_TSO		(IFCAP_TSO4 | IFCAP_TSO6)
+#define IFCAP_HWCSUM	(IFCAP_RXCSUM | IFCAP_TXCSUM)
+#define	IFCAP_TSO	(IFCAP_TSO4 | IFCAP_TSO6)
+#define	IFCAP_WOL	(IFCAP_WOL_UCAST | IFCAP_WOL_MCAST | IFCAP_WOL_MAGIC)
 
 #define	IFQ_MAXLEN	50
 #define	IFNET_SLOWHZ	1		/* granularity is 1 second */