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authorNeale Ranns <nranns@cisco.com>2018-02-23 05:29:09 -0800
committerDamjan Marion <dmarion.lists@gmail.com>2018-03-09 11:59:58 +0000
commit31ed74407643595fdce206e9d7487108fb8b33ab (patch)
treec22c3703c30b7d457b858fe899f56e57613cbb52 /src/vnet/dpo/mpls_label_dpo.h
parent8f931a47b0fa58d5d33a792062650a42ff8bef70 (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/dpo/mpls_label_dpo.h')
-rw-r--r--src/vnet/dpo/mpls_label_dpo.h65
1 files changed, 55 insertions, 10 deletions
diff --git a/src/vnet/dpo/mpls_label_dpo.h b/src/vnet/dpo/mpls_label_dpo.h
index 8494d26b495..98c88f7d812 100644
--- a/src/vnet/dpo/mpls_label_dpo.h
+++ b/src/vnet/dpo/mpls_label_dpo.h
@@ -20,11 +20,47 @@
#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
*/
@@ -47,9 +83,14 @@ typedef struct mpls_label_dpo_t
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
@@ -75,18 +116,17 @@ STATIC_ASSERT((sizeof(mpls_label_dpo_t) <= CLIB_CACHE_LINE_BYTES),
*
* @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);
@@ -104,4 +144,9 @@ mpls_label_dpo_get (index_t index)
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