ipv6: route: place a warning with duplicated string with correct extack

"IPv6: " prefix is already added by pr_fmt, no need to include
it again in the pr_warn() format.  The message predates extack
support, we can replace the whole thing with an extack message.

Suggested-by: David Ahern <dsahern@gmail.com>
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index 40b225f..964491c 100644 (file)
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -4251,17 +4251,6 @@ struct rt6_nh {
        struct list_head next;
 };
 
-static void ip6_print_replace_route_err(struct list_head *rt6_nh_list)
-{
-       struct rt6_nh *nh;
-
-       list_for_each_entry(nh, rt6_nh_list, next) {
-               pr_warn("IPV6: multipath route replace failed (check consistency of installed routes): %pI6c nexthop %pI6c ifi %d\n",
-                       &nh->r_cfg.fc_dst, &nh->r_cfg.fc_gateway,
-                       nh->r_cfg.fc_ifindex);
-       }
-}
-
 static int ip6_route_info_append(struct net *net,
                                 struct list_head *rt6_nh_list,
                                 struct fib6_info *rt,
@@ -4407,7 +4396,8 @@ static int ip6_route_multipath_add(struct fib6_config *cfg,
                nh->fib6_info = NULL;
                if (err) {
                        if (replace && nhn)
-                               ip6_print_replace_route_err(&rt6_nh_list);
+                               NL_SET_ERR_MSG_MOD(extack,
+                                                  "multipath route replace failed (check consistency of installed routes)");
                        err_nh = nh;
                        goto add_errout;
                }