Connect if_bridge to the build.

Approved by:	mlaier (mentor)

sbin/ifconfig/Makefile

@@ -26,6 +26,8 @@ SRCS+=	ifieee80211.c		# SIOC[GS]IEEE80211 support
 SRCS+=	ifcarp.c		# SIOC[GS]VH support
 SRCS+=	ifpfsync.c		# pfsync(4) support
 
+SRCS+=	ifbridge.c		# bridge support
+
 .if !defined(RELEASE_CRUNCH)
 SRCS+=	af_ipx.c		# IPX support
 DPADD=	${LIBIPX}

sbin/ifconfig/ifconfig.8

@@ -870,6 +870,117 @@ Included for
 compatibility.
 .El
 .Pp
+The following parameters are specific to bridge interfaces:
+.Bl -tag -width indent
+.It Cm addm Ar interface
+Add the interface named by
+.Ar interface
+as a member of the bridge.
+The interface is put into promiscuous mode
+so that it can receive every packet sent on the network.
+.It Cm deletem Ar interface
+Remove the interface named by
+.Ar interface
+from the bridge.
+Promiscuous mode is disabled on the interface when
+it is removed from the bridge.
+.It Cm maxaddr Ar size
+Set the size of the bridge address cache to
+.Ar size .
+The default is 100 entries.
+.It Cm timeout Ar seconds
+Set the timeout of address cache entries to
+.Ar seconds
+seconds.
+If
+.Ar seconds
+is zero, then address cache entries will not be expired.
+The default is 240 seconds.
+.It Cm deladdr Ar address
+Delete
+.Ar address
+from the address cache.
+.It Cm flush
+Delete all dynamically-learned addresses from the address cache.
+.It Cm flushall
+Delete all addresses, including static addresses, from the address cache.
+.It Cm discover Ar interface
+Mark an interface as a
+.Dq discovering
+interface.
+When the bridge has no address cache entry
+(either dynamic or static)
+for the destination address of a packet,
+the bridge will forward the packet to all
+member interfaces marked as
+.Dq discovering .
+This is the default for all interfaces added to a bridge.
+.It Cm -discover Ar interface
+Clear the
+.Dq discovering
+attribute on a member interface.
+For packets without the
+.Dq discovering
+attribute, the only packets forwarded on the interface are broadcast
+or multicast packets and packets for which the destination address
+is known to be on the interface's segment.
+.It Cm learn Ar interface
+Mark an interface as a
+.Dq learning
+interface.
+When a packet arrives on such an interface, the source
+address of the packet is entered into the address cache as being a
+destination address on the interface's segment.
+This is the default for all interfaces added to a bridge.
+.It Cm -learn Ar interface
+Clear the
+.Dq learning
+attribute on a member interface.
+.It Cm stp Ar interface
+Enable Spanning Tree protocol on
+.Ar interface .
+The
+.Xr if_bridge 4
+driver has support for the IEEE 802.1D Spanning Tree protocol (STP).
+Spanning Tree is used to detect and remove loops in a network topology.
+.It Cm -stp Ar interface
+Disable Spanning Tree protocol on
+.Ar interface .
+This is the default for all interfaces added to a bridge.
+.It Cm maxage Ar seconds
+Set the time that a Spanning Tree protocol configuration is valid.
+The default is 20 seconds.
+The minimum is 1 second and the maximum is 255 seconds.
+.It Cm fwddelay Ar seconds
+Set the time that must pass before an interface begins forwarding
+packets when Spanning Tree is enabled.
+The default is 15 seconds.
+The minimum is 1 second and the maximum is 255 seconds.
+.It Cm hellotime Ar seconds
+Set the time between broadcasting of Spanning Tree protocol
+configuration messages.
+The default is 2 seconds.
+The minimum is 1 second and the maximum is 255 seconds.
+.It Cm priority Ar value
+Set the bridge priority for Spanning Tree.
+The default is 32768.
+The minimum is 0 and the maximum is 65536.
+.It Cm ifpriority Ar interface Ar value
+Set the Spanning Tree priority of
+.Ar interface
+to
+.Ar value .
+The default is 128.
+The minimum is 0 and the maximum is 255.
+.It Cm ifpathcost Ar interface Ar value
+Set the Spanning Tree path cost of
+.Ar interface
+to
+.Ar value .
+The default is 55.
+The minimum is 0 and the maximum is 65535.
+.El
+.Pp
 The
 .Nm
 utility displays the current configuration for a network interface

share/man/man4/Makefile

@@ -100,6 +100,7 @@ MAN=	aac.4 \
 	idt.4 \
 	ieee80211.4 \
 	ifmib.4 \
+	if_bridge.4 \
 	iic.4 \
 	iicbb.4 \
 	iicbus.4 \

sys/conf/NOTES

@@ -641,6 +641,7 @@ device		tap			#Virtual Ethernet driver
 device		tun			#Tunnel driver (ppp(8), nos-tun(8))
 device		sl			#Serial Line IP
 device		gre			#IP over IP tunneling
+device		if_bridge		#Bridge interface
 device		pf			#PF OpenBSD packet-filter firewall
 device		pflog			#logging support interface for PF
 device		pfsync			#synchronization interface for PF

sys/conf/files

@@ -1327,10 +1327,12 @@ net/bpf.c			standard
 net/bpf_filter.c		optional bpf
 net/bpf_filter.c		optional netgraph_bpf
 net/bridge.c			optional bridge
+net/bridgestp.c			optional if_bridge
 net/bsd_comp.c			optional ppp_bsdcomp
 net/if.c			standard
 net/if_arcsubr.c		optional arcnet
 net/if_atmsubr.c		optional atm
+net/if_bridge.c			optional if_bridge
 net/if_clone.c			standard
 net/if_disc.c			optional disc
 net/if_ef.c			optional ef

sys/modules/Makefile

@@ -98,6 +98,7 @@ SUBDIR=	${_3dfx} \
 	${_ida} \
 	${_idt} \
 	${_ie} \
+	if_bridge \
 	if_disc \
 	if_ef \
 	if_faith \

sys/modules/if_bridge/Makefile

@@ -0,0 +1,17 @@
+# $FreeBSD$
+
+.PATH:	${.CURDIR}/../../net
+KMOD=	if_bridge
+SRCS=	if_bridge.c bridgestp.c opt_inet.h opt_inet6.h
+
+opt_inet.h:
+	echo "#define INET 1" > ${.TARGET}
+	
+opt_inet6.h:
+.if defined(NOINET6)
+	echo > ${.TARGET}
+.else
+	echo "#define INET6 1" > ${.TARGET}
+.endif
+
+.include <bsd.kmod.mk>