diff options
Diffstat (limited to 'vnet/vnet/dpo/mpls_label_dpo.h')
| -rw-r--r-- | vnet/vnet/dpo/mpls_label_dpo.h | 36 |
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); |