[ovs-dev] [PATCH 2/5] ovs-router: Add "ovs/route/lookup" command

YAMAMOTO Takashi yamamoto at valinux.co.jp
Wed Nov 19 02:54:36 UTC 2014


This command is useful at least for testing.

Example output:
    % ovs-appctl ovs/route/lookup '10.0.0.1'
    gateway 172.17.0.254
    dev wm0
    %

Signed-off-by: YAMAMOTO Takashi <yamamoto at valinux.co.jp>
---
 lib/ovs-router.c | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/lib/ovs-router.c b/lib/ovs-router.c
index ea11e9e..2550288 100644
--- a/lib/ovs-router.c
+++ b/lib/ovs-router.c
@@ -260,6 +260,31 @@ ovs_router_show(struct unixctl_conn *conn, int argc OVS_UNUSED,
     ds_destroy(&ds);
 }
 
+static void
+ovs_router_lookup_cmd(struct unixctl_conn *conn, int argc OVS_UNUSED,
+                      const char *argv[], void *aux OVS_UNUSED)
+{
+    ovs_be32 ip;
+    unsigned int plen;
+
+    if (scan_ipv4_route(argv[1], &ip, &plen) && plen == 32) {
+        char iface[IFNAMSIZ];
+        ovs_be32 gw;
+
+        if (ovs_router_lookup(ip, iface, &gw)) {
+            struct ds ds = DS_EMPTY_INITIALIZER;
+
+            ds_put_format(&ds, "gateway " IP_FMT "\n", IP_ARGS(gw));
+            ds_put_format(&ds, "dev %s\n", iface);
+            unixctl_command_reply(conn, ds_cstr(&ds));
+        } else {
+            unixctl_command_reply(conn, "Not found");
+        }
+    } else {
+        unixctl_command_reply(conn, "Invalid parameters");
+    }
+}
+
 void
 ovs_router_flush(void)
 {
@@ -289,4 +314,6 @@ ovs_router_unixctl_register(void)
     unixctl_command_register("ovs/route/show", "", 0, 0, ovs_router_show, NULL);
     unixctl_command_register("ovs/route/del", "ipv4_addr/prefix_len", 1, 1, ovs_router_del,
                              NULL);
+    unixctl_command_register("ovs/route/lookup", "ipv4_addr", 1, 1,
+                             ovs_router_lookup_cmd, NULL);
 }
-- 
1.9.4




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