diff options
| author |   Neale Ranns <nranns@cisco.com> | 2018-02-23 05:29:09 -0800 |
|---|---|---|
| committer |   Damjan Marion <dmarion.lists@gmail.com> | 2018-03-09 11:59:58 +0000 |
| commit | 31ed74407643595fdce206e9d7487108fb8b33ab (patch) | |
| tree | c22c3703c30b7d457b858fe899f56e57613cbb52 /src/vnet/mpls/mpls_tunnel.c | |
| parent | 8f931a47b0fa58d5d33a792062650a42ff8bef70 (diff) | |
MPLS Unifom mode
- support both pipe and uniform modes for all MPLS LSP
- all API programming for output-labels requires that the mode (and associated data) is specificed
- API changes in MPLS, BIER and IP are involved
- new DPO [sub] types for MPLS labels to handle the two modes.
Change-Id: I87b76401e996f10dfbdbe4552ff6b19af958783c
Signed-off-by: Neale Ranns <nranns@cisco.com>
Diffstat (limited to 'src/vnet/mpls/mpls_tunnel.c')
| -rw-r--r-- | src/vnet/mpls/mpls_tunnel.c | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/src/vnet/mpls/mpls_tunnel.c b/src/vnet/mpls/mpls_tunnel.c index 8ed2c409ce8..c2067d81b00 100644 --- a/src/vnet/mpls/mpls_tunnel.c +++ b/src/vnet/mpls/mpls_tunnel.c @@ -123,6 +123,12 @@ mpls_tunnel_collect_forwarding (fib_node_index_t pl_index, path_ext = fib_path_ext_list_find_by_path_index(&ctx->mt->mt_path_exts, path_index); + /* + * we don't want IP TTL decrements for packets hitting the MPLS labels + * we stack on, since the IP TTL decrement is done by the adj + */ + path_ext->fpe_mpls_flags |= FIB_PATH_EXT_MPLS_FLAG_NO_IP_TTL_DECR; + if (NULL != path_ext) { /* @@ -273,9 +279,8 @@ mpls_tunnel_stack (adj_index_t ai) mpls_tunnel_mk_lb(mt, adj->ia_link, - (VNET_LINK_MPLS == adj_get_link_type(ai) ? - FIB_FORW_CHAIN_TYPE_MPLS_NON_EOS: - FIB_FORW_CHAIN_TYPE_MPLS_EOS), + fib_forw_chain_type_from_link_type( + adj_get_link_type(ai)), &dpo); adj_nbr_midchain_stack(ai, &dpo); @@ -521,6 +526,11 @@ mpls_tunnel_tx (vlib_main_t * vm, b0 = vlib_get_buffer(vm, bi0); vnet_buffer(b0)->ip.adj_index[VLIB_TX] = mt->mt_l2_lb.dpoi_index; + /* since we are coming out of the L2 world, where the vlib_buffer + * union is used for other things, make sure it is clean for + * MPLS from now on. + */ + vnet_buffer(b0)->mpls.first = 0; if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED)) { |