Metadata / opaque formatting belongs in vpp

[vpp.git] / src / vlib / node.h

diff --git a/src/vlib/node.h b/src/vlib/node.h
index 2acd61c..f41eb60 100644 (file)
--- a/src/vlib/node.h
+++ b/src/vlib/node.h
@@ -55,6 +55,17 @@ typedef uword (vlib_node_function_t) (struct vlib_main_t * vm,
                                      struct vlib_node_runtime_t * node,
                                      struct vlib_frame_t * frame);
 
+typedef enum
+{
+  VLIB_NODE_PROTO_HINT_NONE = 0,
+  VLIB_NODE_PROTO_HINT_ETHERNET,
+  VLIB_NODE_PROTO_HINT_IP4,
+  VLIB_NODE_PROTO_HINT_IP6,
+  VLIB_NODE_PROTO_HINT_TCP,
+  VLIB_NODE_PROTO_HINT_UDP,
+  VLIB_NODE_N_PROTO_HINTS,
+} vlib_node_proto_hint_t;
+
 typedef enum
 {
   /* An internal node on the call graph (could be output). */
@@ -75,11 +86,22 @@ typedef enum
   VLIB_N_NODE_TYPE,
 } vlib_node_type_t;
 
+typedef struct _vlib_node_fn_registration
+{
+  vlib_node_function_t *function;
+  int priority;
+  struct _vlib_node_fn_registration *next_registration;
+  char *name;
+} vlib_node_fn_registration_t;
+
 typedef struct _vlib_node_registration
 {
   /* Vector processing function for this node. */
   vlib_node_function_t *function;
 
+  /* Node function candidate registration with priority */
+  vlib_node_fn_registration_t *node_fn_registrations;
+
   /* Node name. */
   char *name;
 
@@ -123,6 +145,9 @@ typedef struct _vlib_node_registration
   /* Node flags. */
   u16 flags;
 
+  /* protocol at b->data[b->current_data] upon entry to the dispatch fn */
+  u8 protocol_hint;
+
   /* Size of scalar and vector arguments in bytes. */
   u16 scalar_size, vector_size;
 
@@ -140,6 +165,7 @@ typedef struct _vlib_node_registration
 
 } vlib_node_registration_t;
 
+#ifndef CLIB_MARCH_VARIANT
 #define VLIB_REGISTER_NODE(x,...)                                       \
     __VA_ARGS__ vlib_node_registration_t x;                             \
 static void __vlib_add_node_registration_##x (void)                     \
@@ -150,7 +176,46 @@ static void __vlib_add_node_registration_##x (void)                     \
     x.next_registration = vm->node_main.node_registrations;             \
     vm->node_main.node_registrations = &x;                              \
 }                                                                       \
+static void __vlib_rm_node_registration_##x (void)                      \
+    __attribute__((__destructor__)) ;                                   \
+static void __vlib_rm_node_registration_##x (void)                      \
+{                                                                       \
+    vlib_main_t * vm = vlib_get_main();                                 \
+    VLIB_REMOVE_FROM_LINKED_LIST (vm->node_main.node_registrations,     \
+                                  &x, next_registration);               \
+}                                                                       \
 __VA_ARGS__ vlib_node_registration_t x
+#else
+#define VLIB_REGISTER_NODE(x,...)                                       \
+static __clib_unused vlib_node_registration_t __clib_unused_##x
+#endif
+
+#ifndef CLIB_MARCH_VARIANT
+#define CLIB_MARCH_VARIANT_STR "default"
+#else
+#define _CLIB_MARCH_VARIANT_STR(s) __CLIB_MARCH_VARIANT_STR(s)
+#define __CLIB_MARCH_VARIANT_STR(s) #s
+#define CLIB_MARCH_VARIANT_STR _CLIB_MARCH_VARIANT_STR(CLIB_MARCH_VARIANT)
+#endif
+
+#define VLIB_NODE_FN(node)                                             \
+uword CLIB_MARCH_SFX (node##_fn)();                                    \
+static vlib_node_fn_registration_t                                     \
+  CLIB_MARCH_SFX(node##_fn_registration) =                             \
+  { .function = &CLIB_MARCH_SFX (node##_fn), };                                \
+                                                                       \
+static void __clib_constructor                                         \
+CLIB_MARCH_SFX (node##_multiarch_register) (void)                      \
+{                                                                      \
+  extern vlib_node_registration_t node;                                        \
+  vlib_node_fn_registration_t *r;                                      \
+  r = & CLIB_MARCH_SFX (node##_fn_registration);                       \
+  r->priority = CLIB_MARCH_FN_PRIORITY();                              \
+  r->name = CLIB_MARCH_VARIANT_STR;                                    \
+  r->next_registration = node.node_fn_registrations;                   \
+  node.node_fn_registrations = r;                                      \
+}                                                                      \
+uword CLIB_CPU_OPTIMIZED CLIB_MARCH_SFX (node##_fn)
 
 #if CLIB_DEBUG > 0
 #define VLIB_NODE_FUNCTION_CLONE_TEMPLATE(arch, fn)
@@ -193,6 +258,8 @@ typedef struct
   u64 calls, vectors, clocks, suspends;
   u64 max_clock;
   u64 max_clock_n;
+  u64 perf_counter_ticks;
+  u64 perf_counter_vectors;
 } vlib_node_stats_t;
 
 #define foreach_vlib_node_state                                        \
@@ -267,6 +334,9 @@ typedef struct vlib_node_t
   /* Number of bytes of run time data. */
   u8 runtime_data_bytes;
 
+  /* protocol at b->data[b->current_data] upon entry to the dispatch fn */
+  u8 protocol_hint;
+
   /* Number of error codes used by this node. */
   u16 n_errors;
 
@@ -320,6 +390,9 @@ typedef struct vlib_node_t
                         struct vlib_frame_t * f);
   /* for pretty-printing, not typically valid */
   u8 *state_string;
+
+  /* Node function candidate registration with priority */
+  vlib_node_fn_registration_t *node_fn_registrations;
 } vlib_node_t;
 
 #define VLIB_INVALID_NODE_INDEX ((u32) ~0)
@@ -332,6 +405,9 @@ typedef struct vlib_node_t
 typedef struct vlib_frame_t
 {
   /* Frame flags. */
+  u16 frame_flags;
+
+  /* User flags. Used for sending hints to the next node. */
   u16 flags;
 
   /* Number of scalar bytes in arguments. */
@@ -385,7 +461,7 @@ typedef struct
 always_inline void
 vlib_next_frame_init (vlib_next_frame_t * nf)
 {
-  memset (nf, 0, sizeof (nf[0]));
+  clib_memset (nf, 0, sizeof (nf[0]));
   nf->frame_index = ~0;
   nf->node_runtime_index = ~0;
 }
@@ -431,6 +507,9 @@ typedef struct vlib_node_runtime_t
   u32 vectors_since_last_overflow;     /**< Number of vector elements
                                          processed by this node. */
 
+  u32 perf_counter_ticks_since_last_overflow; /**< Perf counter ticks */
+  u32 perf_counter_vectors_since_last_overflow;        /**< Perf counter vectors */
+
   u32 next_frame_index;                        /**< Start of next frames for this
                                          node. */