iproute2 vxlan documentation update for bridge command

The bridge fdb command line help and the bridge.8
man page are outdated in regards to the vxlan support.
The patch updates both the command line help for the
bridge command and its man page.
Signed-off-by: Thomas Richter <tmricht@linux.vnet.ibm.com>

bridge/fdb.c

@@ -30,8 +30,8 @@ int filter_index;
 
 static void usage(void)
 {
-	fprintf(stderr, "Usage: bridge fdb { add | del } ADDR dev DEV {self|master} [ temp ] [router]\n"
-		        "              [ dst IPADDR] [ vlan VID ]\n"
+	fprintf(stderr, "Usage: bridge fdb { add | append | del } ADDR dev DEV {self|master} [ temp ]\n"
+		        "              [router] [ dst IPADDR] [ vlan VID ]\n"
 		        "              [ port PORT] [ vni VNI ] [via DEV]\n");
 	fprintf(stderr, "       bridge fdb {show} [ dev DEV ]\n");
 	exit(-1);

man/man8/bridge.8

@@ -44,12 +44,20 @@ bridge \- show / manipulate bridge addresses and devices
 .IR DEV " ]"
 
 .ti -8
-.BR "bridge fdb" " { " add " | " del " } "
+.BR "bridge fdb" " { " add " | " append " | " del " } "
 .I LLADDR
 .B  dev
 .IR DEV " { "
 .BR local " | " temp " } { "
-.BR self " } { " embedded " } "
+.BR self " } { " embedded " } { " router " } [ "
+.B  dst
+.IR IPADDR " ] [ "
+.B vni
+.IR VNI " ] ["
+.B port
+.IR PORT " ] ["
+.B via
+.IR DEVICE " ]"
 
 .ti -8
 .BR "bridge fdb" " [ " show " ] [ "
@@ -229,6 +237,7 @@ objects contain known Ethernet addresses on a  link.
 
 .P
 The corresponding commands display fdb entries, add new entries,
+append entries,
 and delete old ones.
 
 .SS bridge fdb add - add a new fdb entry
@@ -236,11 +245,11 @@ and delete old ones.
 This command creates a new fdb entry.
 
 .TP
-.BI "ADDRESS"
+.BI "LLADDR"
 the Ethernet MAC address.
 
 .TP
-.BI dev " NAME"
+.BI dev " DEV"
 the interface to which this address is associated.
 
 .B self
@@ -251,7 +260,54 @@ the interface to which this address is associated.
 - the address is associated with an offloaded fdb
 .sp
 
+.B router
+- the destination address is associated with a router.
+Valid if the referenced device is a VXLAN type device and has
+route shortcircuit enabled.
+.sp
+
 .in -8
+The next command line parameters apply only
+when the specified device
+.I DEV
+is of type VXLAN.
+.TP
+.BI dst " IPADDR"
+the IP address of the destination
+VXLAN tunnel endpoint where the Ethernet MAC ADDRESS resides.
+
+.TP
+.BI vni " VNI"
+the VXLAN VNI Network Identifier (or VXLAN Segment ID)
+to use to connect to the remote VXLAN tunnel endpoint.
+If omitted the value specified at vxlan device creation
+will be used.
+
+.TP
+.BI port " PORT"
+the UDP destination PORT number to use to connect to the
+remote VXLAN tunnel endpoint.
+If omitted the default value is used.
+
+.TP
+.BI via " DEVICE"
+device name of the outgoing interface for the
+VXLAN device driver to reach the
+remote VXLAN tunnel endpoint. 
+
+.SS bridge fdb append - append a forwarding database entry
+This command adds a new fdb entry with an already known
+.IR LLADDR .
+Valid only for multicast link layer addresses.
+The command adds support for broadcast and multicast
+Ethernet MAC addresses.
+The Ethernet MAC address is added multiple times into
+the forwarding database and the vxlan device driver
+sends a copy of the data packet to each entry found.
+
+.PP
+The arguments are the same as with
+.BR "bridge fdb add" ,
 
 .SS bridge fdb delete - delete a forwarding database entry
 This command removes an existing fdb entry.