[PATCH] iproute vxlan add support for fdb replace command

[PATCH] iproute vxlan add support for fdb replace command

[Thomas Richter]

Add support for the bridge fdb replace command to replace an
existing entry in the vxlan device driver forwarding data base.
The entry is identified with its unicast mac address and its
corresponding remote destination information is updated.

This is useful for virtual machine migration and replaces the
bridge fdb del and bridge fdb add commands.

It follows the same interface as ip neigh replace commands.

Signed-off-by: Thomas Richter <tmricht@linux.vnet.ibm.com>
---
 bridge/fdb.c |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)

diff --git a/bridge/fdb.c b/bridge/fdb.c
index 591fbbe..e2e53f1 100644
--- a/bridge/fdb.c
+++ b/bridge/fdb.c
@@ -30,7 +30,7 @@ int filter_index;
 
 static void usage(void)
 {
-	fprintf(stderr, "Usage: bridge fdb { add | append | del } ADDR dev DEV {self|master} [ temp ]\n"
+	fprintf(stderr, "Usage: bridge fdb { add | append | del | replace } 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");
@@ -334,6 +334,8 @@ int do_fdb(int argc, char **argv)
 			return fdb_modify(RTM_NEWNEIGH, NLM_F_CREATE|NLM_F_EXCL, argc-1, argv+1);
 		if (matches(*argv, "append") == 0)
 			return fdb_modify(RTM_NEWNEIGH, NLM_F_CREATE|NLM_F_APPEND, argc-1, argv+1);
+		if (matches(*argv, "replace") == 0)
+			return fdb_modify(RTM_NEWNEIGH, NLM_F_CREATE|NLM_F_REPLACE, argc-1, argv+1);
 		if (matches(*argv, "delete") == 0)
 			return fdb_modify(RTM_DELNEIGH, 0, argc-1, argv+1);
 		if (matches(*argv, "show") == 0 ||
-- 
1.7.1

Re: [PATCH] iproute vxlan add support for fdb replace command

[Stephen Hemminger]

On Tue, 30 Jul 2013 08:16:41 +0200
Thomas Richter <tmricht@linux.vnet.ibm.com> wrote:

> Add support for the bridge fdb replace command to replace an
> existing entry in the vxlan device driver forwarding data base.
> The entry is identified with its unicast mac address and its
> corresponding remote destination information is updated.
> 
> This is useful for virtual machine migration and replaces the
> bridge fdb del and bridge fdb add commands.
> 
> It follows the same interface as ip neigh replace commands.
> 
> Signed-off-by: Thomas Richter <tmricht@linux.vnet.ibm.com>

Applied to master for next release.