[PATCH v2] ip-nexthop: support flush by id

[Chunmei Xu]

since id is unique for nexthop, it is heavy to dump all nexthops.
use existing delete_nexthop to support flush by id

Signed-off-by: Chunmei Xu <xuchun...@linux.alibaba.com>
---
 ip/ipnexthop.c | 20 +++++++++++++++++++-
 1 file changed, 19 insertions(+), 1 deletion(-)

diff --git a/ip/ipnexthop.c b/ip/ipnexthop.c
index 20cde586..419bcb0a 100644
--- a/ip/ipnexthop.c
+++ b/ip/ipnexthop.c
@@ -460,6 +460,24 @@ static int ipnh_get_id(__u32 id)
        return 0;
 }
 
+static int ipnh_list_flush_id(__u32 id, int action)
+{
+       int err;
+
+       if (action == IPNH_LIST)
+               return ipnh_get_id(id);
+
+       if (rtnl_open(&rth_del, 0) < 0) {
+               fprintf(stderr, "Cannot open rtnetlink\n");
+               return EXIT_FAILURE;
+       }
+
+       err = delete_nexthop(id);
+       rtnl_close(&rth_del);
+
+       return err;
+}
+
 static int ipnh_list_flush(int argc, char **argv, int action)
 {
        unsigned int all = (argc == 0);
@@ -490,7 +508,7 @@ static int ipnh_list_flush(int argc, char **argv, int 
action)
                        NEXT_ARG();
                        if (get_unsigned(&id, *argv, 0))
                                invarg("invalid id value", *argv);
-                       return ipnh_get_id(id);
+                       return ipnh_list_flush_id(id, action);
                } else if (!matches(*argv, "protocol")) {
                        __u32 proto;
 
-- 
2.27.0