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authorNeale Ranns <nranns@cisco.com>2017-05-26 03:48:53 -0700
committerDamjan Marion <dmarion.lists@gmail.com>2017-05-26 18:15:31 +0000
commit6af1c04f925f0d74fc02789cf8227706ed6a8c2a (patch)
tree4661458544f73e55df5141f361a8244b8066f69e /src/vnet/mpls/mpls_lookup.c
parentdcd6d6254a2b204a4283c889d1feac8f59a62639 (diff)
MPLS lookup DPO does not pop the label (nor does it handle replicate)
Change-Id: I7de6b96631d1645d0eadd38525860d84d78e316d Signed-off-by: Neale Ranns <nranns@cisco.com>
Diffstat (limited to 'src/vnet/mpls/mpls_lookup.c')
-rw-r--r--src/vnet/mpls/mpls_lookup.c79
1 files changed, 2 insertions, 77 deletions
diff --git a/src/vnet/mpls/mpls_lookup.c b/src/vnet/mpls/mpls_lookup.c
index 42e5399c2da..7cedc3846bf 100644
--- a/src/vnet/mpls/mpls_lookup.c
+++ b/src/vnet/mpls/mpls_lookup.c
@@ -17,7 +17,7 @@
#include <vlib/vlib.h>
#include <vnet/pg/pg.h>
-#include <vnet/mpls/mpls.h>
+#include <vnet/mpls/mpls_lookup.h>
#include <vnet/fib/mpls_fib.h>
#include <vnet/dpo/load_balance_map.h>
#include <vnet/dpo/replicate_dpo.h>
@@ -30,7 +30,7 @@ static vlib_node_registration_t mpls_lookup_node;
/**
* The arc/edge from the MPLS lookup node to the MPLS replicate node
*/
-static u32 mpls_lookup_to_replicate_edge;
+u32 mpls_lookup_to_replicate_edge;
typedef struct {
u32 next_index;
@@ -56,81 +56,6 @@ format_mpls_lookup_trace (u8 * s, va_list * args)
return s;
}
-/*
- * Compute flow hash.
- * We'll use it to select which adjacency to use for this flow. And other things.
- */
-always_inline u32
-mpls_compute_flow_hash (const mpls_unicast_header_t * hdr,
- flow_hash_config_t flow_hash_config)
-{
- /*
- * We need to byte swap so we use the numerical value. i.e. an odd label
- * leads to an odd bucket. as opposed to a label above and below value X.
- */
- u8 next_label_is_entropy;
- mpls_label_t ho_label;
- u32 hash, value;
-
- ho_label = clib_net_to_host_u32(hdr->label_exp_s_ttl);
- hash = vnet_mpls_uc_get_label(ho_label);
- next_label_is_entropy = 0;
-
- while (MPLS_EOS != vnet_mpls_uc_get_s(ho_label))
- {
- hdr++;
- ho_label = clib_net_to_host_u32(hdr->label_exp_s_ttl);
- value = vnet_mpls_uc_get_label(ho_label);
-
- if (1 == next_label_is_entropy)
- {
- /*
- * The label is an entropy value, use it alone as the hash
- */
- return (ho_label);
- }
- if (MPLS_IETF_ENTROPY_LABEL == value)
- {
- /*
- * we've met a label in the stack indicating that tha next
- * label is an entropy value
- */
- next_label_is_entropy = 1;
- }
- else
- {
- /*
- * XOR the label values in the stack together to
- * build up the hash value
- */
- hash ^= value;
- }
- }
-
- /*
- * check the top nibble for v4 and v6
- */
- hdr++;
-
- switch (((u8*)hdr)[0] >> 4)
- {
- case 4:
- /* incorporate the v4 flow-hash */
- hash ^= ip4_compute_flow_hash ((const ip4_header_t *)hdr,
- IP_FLOW_HASH_DEFAULT);
- break;
- case 6:
- /* incorporate the v6 flow-hash */
- hash ^= ip6_compute_flow_hash ((const ip6_header_t *)hdr,
- IP_FLOW_HASH_DEFAULT);
- break;
- default:
- break;
- }
-
- return (hash);
-}
-
static inline uword
mpls_lookup (vlib_main_t * vm,
vlib_node_runtime_t * node,