flow-hash: Add symmetric flag for flow hashing

[vpp.git] / src / vnet / ip / ip6_hop_by_hop.h

diff --git a/src/vnet/ip/ip6_hop_by_hop.h b/src/vnet/ip/ip6_hop_by_hop.h
index acfaa37..6ae2a2e 100644 (file)
--- a/src/vnet/ip/ip6_hop_by_hop.h
+++ b/src/vnet/ip/ip6_hop_by_hop.h
@@ -92,8 +92,6 @@ typedef struct
 
 extern ip6_hop_by_hop_ioam_main_t ip6_hop_by_hop_ioam_main;
 
-extern u8 *format_path_map (u8 * s, va_list * args);
-
 extern clib_error_t *ip6_ioam_enable (int has_trace_option,
                                      int has_pot_option,
                                      int has_seqno_option,
@@ -206,6 +204,68 @@ is_seqno_enabled (void)
 }
 
 int ip6_trace_profile_setup ();
+
+static inline u32
+ioam_flow_add (u8 encap, u8 * flow_name)
+{
+  ip6_hop_by_hop_ioam_main_t *hm = &ip6_hop_by_hop_ioam_main;
+  flow_data_t *flow = 0;
+  u32 index = 0;
+  u8 i;
+
+  pool_get (hm->flows, flow);
+  clib_memset (flow, 0, sizeof (flow_data_t));
+
+  index = flow - hm->flows;
+  strncpy ((char *) flow->flow_name, (char *) flow_name, 31);
+
+  if (!encap)
+    IOAM_SET_DECAP (index);
+
+  for (i = 0; i < 255; i++)
+    {
+      if (hm->flow_handler[i])
+       flow->ctx[i] = hm->flow_handler[i] (index, 1);
+    }
+  return (index);
+}
+
+always_inline ip6_hop_by_hop_option_t *
+ip6_hbh_get_option (ip6_hop_by_hop_header_t * hbh0, u8 option_to_search)
+{
+  ip6_hop_by_hop_option_t *opt0, *limit0;
+  u8 type0;
+
+  if (!hbh0)
+    return NULL;
+
+  opt0 = (ip6_hop_by_hop_option_t *) (hbh0 + 1);
+  limit0 = (ip6_hop_by_hop_option_t *)
+    ((u8 *) hbh0 + ((hbh0->length + 1) << 3));
+
+  /* Scan the set of h-b-h options, process ones that we understand */
+  while (opt0 < limit0)
+    {
+      type0 = opt0->type;
+      switch (type0)
+       {
+       case 0:         /* Pad1 */
+         opt0 = (ip6_hop_by_hop_option_t *) ((u8 *) opt0) + 1;
+         continue;
+       case 1:         /* PadN */
+         break;
+       default:
+         if (type0 == option_to_search)
+           return opt0;
+         break;
+       }
+      opt0 =
+       (ip6_hop_by_hop_option_t *) (((u8 *) opt0) + opt0->length +
+                                    sizeof (ip6_hop_by_hop_option_t));
+    }
+  return NULL;
+}
+
 #endif /* __included_ip6_hop_by_hop_ioam_h__ */
 
 /*