#include <vnet/mpls/packet.h>
#include <vnet/dpo/dpo.h>
+/**
+ * Flags present on an MPLS label sourced path-extension
+ */
+typedef enum mpls_label_dpo_attr_t_
+{
+ /**
+ * Do not decrement the TTL of IP packet during imposition
+ */
+ MPLS_LABEL_DPO_ATTR_NO_IP_TTL_DECR,
+ MPLS_LABEL_DPO_ATTR_UNIFORM_MODE,
+} mpls_label_dpo_attr_t;
+
+#define MPLS_LABEL_DPO_ATTR_MAX (MPLS_LABEL_DPO_ATTR_UNIFORM_MODE+1)
+
+typedef enum mpls_label_dpo_flags_t_
+{
+ MPLS_LABEL_DPO_FLAG_NONE = 0,
+ MPLS_LABEL_DPO_FLAG_NO_IP_TTL_DECR = (1 << MPLS_LABEL_DPO_ATTR_NO_IP_TTL_DECR),
+ MPLS_LABEL_DPO_FLAG_UNIFORM_MODE = (1 << MPLS_LABEL_DPO_ATTR_UNIFORM_MODE),
+} __attribute__ ((packed)) mpls_label_dpo_flags_t;
+
+#define MPLS_LABEL_DPO_ATTR_NAMES { \
+ [MPLS_LABEL_DPO_ATTR_NO_IP_TTL_DECR] = "no-ip-tll-decr", \
+ [MPLS_LABEL_DPO_ATTR_UNIFORM_MODE] = "uniform-mode", \
+}
+
+#define FOR_EACH_MPLS_LABEL_DPO_ATTR(_item) \
+ for (_item = MPLS_LABEL_DPO_ATTR_NO_IP_TTL_DECR; \
+ _item <= MPLS_LABEL_DPO_ATTR_UNIFORM_MODE; \
+ _item++)
+
+/**
+ * Format the flags variable
+ */
+extern u8* format_mpls_label_dpo_flags(u8 *s, va_list *args);
+
+/**
+ * Maximum number of labels in one DPO
+ */
+#define MPLS_LABEL_DPO_MAX_N_LABELS 12
+
/**
* A representation of an MPLS label for imposition in the data-path
*/
{
/**
* The MPLS label header to impose. Outer most label first.
+ * Each DPO will occupy one cache line, stuff that many labels in.
*/
- mpls_unicast_header_t mld_hdr[8];
+ mpls_unicast_header_t mld_hdr[MPLS_LABEL_DPO_MAX_N_LABELS];
/**
* Next DPO in the graph
*/
dpo_proto_t mld_payload_proto;
+ /**
+ * Flags
+ */
+ mpls_label_dpo_flags_t mld_flags;
+
/**
* Size of the label stack
*/
- u16 mld_n_labels;
+ u8 mld_n_labels;
/**
* Cached amount of header bytes to paint
* 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.");
+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
+ * @param parent The parent of the created MPLS label object
+ * @param dpo The MPLS label DPO created
*/
-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 void mpls_label_dpo_create(fib_mpls_label_t *label_stack,
+ mpls_eos_bit_t eos,
+ dpo_proto_t payload_proto,
+ mpls_label_dpo_flags_t flags,
+ const dpo_id_t *paremt,
+ dpo_id_t *dpo);
extern u8* format_mpls_label_dpo(u8 *s, va_list *args);
extern void mpls_label_dpo_module_init(void);
+/*
+ * test function to get the registered DPO type for the flags
+ */
+extern dpo_type_t mpls_label_dpo_get_type(mpls_label_dpo_flags_t flags);
+
#endif