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| author |   Neale Ranns <nranns@cisco.com> | 2017-09-18 18:04:10 -0700 |
|---|---|---|
| committer | Neale Ranns <nranns@cisco.com> | 2017-09-19 19:01:54 +0000 |
| commit | caac350076e386e5caf6322a3439ea0c36d77cc5 (patch) | |
| tree | d326ddc74232cc7382846f591ade2a78197c16f2 | |
| parent | 058799951d062bbbe4df8df101b4db5bc7797b8f (diff) | |
Treat label=0 as an invalid next-hop-via-label
Change-Id: I831226111d26f5c8a795e0773e23fddcddfb1613
Signed-off-by: Neale Ranns <nranns@cisco.com>
| -rw-r--r-- | src/vnet/ip/ip_api.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/src/vnet/ip/ip_api.c b/src/vnet/ip/ip_api.c index bb29e0bc077..6981c84cb0e 100644 --- a/src/vnet/ip/ip_api.c +++ b/src/vnet/ip/ip_api.c @@ -794,7 +794,13 @@ add_del_route_t_handler (u8 is_multipath, fib_route_path_t *paths = NULL; fib_entry_flag_t entry_flags = FIB_ENTRY_FLAG_NONE; - if (MPLS_LABEL_INVALID != next_hop_via_label) + /* + * the special INVALID label meams we are not recursing via a + * label. Exp-null value is never a valid via-label so that + * also means it's not a via-label and means clients that set + * it to 0 by default get the expected behaviour + */ + if ((MPLS_LABEL_INVALID != next_hop_via_label) && (0 != next_hop_via_label)) { path.frp_proto = DPO_PROTO_MPLS; path.frp_local_label = next_hop_via_label; |