summaryrefslogtreecommitdiffstats
path: root/vnet/vnet/dpo/mpls_label_dpo.h
diff options
context:
space:
mode:
Diffstat (limited to 'vnet/vnet/dpo/mpls_label_dpo.h')
-rw-r--r--vnet/vnet/dpo/mpls_label_dpo.h36
1 files changed, 33 insertions, 3 deletions
diff --git a/vnet/vnet/dpo/mpls_label_dpo.h b/vnet/vnet/dpo/mpls_label_dpo.h
index 47ee344933f..6580c47d7cc 100644
--- a/vnet/vnet/dpo/mpls_label_dpo.h
+++ b/vnet/vnet/dpo/mpls_label_dpo.h
@@ -26,9 +26,9 @@
typedef struct mpls_label_dpo_t
{
/**
- * The MPLS label header to impose
+ * The MPLS label header to impose. Outer most label first.
*/
- mpls_unicast_header_t mld_hdr;
+ mpls_unicast_header_t mld_hdr[8];
/**
* Next DPO in the graph
@@ -36,15 +36,45 @@ typedef struct mpls_label_dpo_t
dpo_id_t mld_dpo;
/**
+ * The protocol of the payload/packets that are being encapped
+ */
+ dpo_proto_t mld_payload_proto;
+
+ /**
+ * Size of the label stack
+ */
+ u16 mld_n_labels;
+
+ /**
* Number of locks/users of the label
*/
u16 mld_locks;
} mpls_label_dpo_t;
-extern index_t mpls_label_dpo_create(mpls_label_t label,
+/**
+ * @brief Assert that the MPLS label object is less than a cache line in size.
+ * Should this get any bigger then we will need to reconsider how many labels
+ * can be pushed in one object.
+ */
+_Static_assert((sizeof(mpls_label_dpo_t) <= CLIB_CACHE_LINE_BYTES),
+ "MPLS label DPO is larger than one cache line.");
+
+/**
+ * @brief Create an MPLS label object
+ *
+ * @param label_stack The stack if labels to impose, outer most label first
+ * @param eos The inner most label's EOS bit
+ * @param ttl The inner most label's TTL bit
+ * @param exp The inner most label's EXP bit
+ * @param payload_proto The ptocool of the payload packets that will
+ * be imposed with this label header.
+ * @param dpo The parent of the created MPLS label object
+ */
+extern index_t mpls_label_dpo_create(mpls_label_t *label_stack,
mpls_eos_bit_t eos,
u8 ttl,
u8 exp,
+ dpo_proto_t payload_proto,
const dpo_id_t *dpo);
extern u8* format_mpls_label_dpo(u8 *s, va_list *args);