ARP/NDP does not send solicitation when no source address is available

[vpp.git] / vnet / vnet / ip / ip6.h

diff --git a/vnet/vnet/ip/ip6.h b/vnet/vnet/ip/ip6.h
index 4d0e856..70e3267 100644 (file)
--- a/vnet/vnet/ip/ip6.h
+++ b/vnet/vnet/ip/ip6.h
@@ -42,8 +42,10 @@
 
 #include <vlib/mc.h>
 #include <vnet/ip/ip6_packet.h>
+#include <vnet/ip/ip6_hop_by_hop_packet.h>
 #include <vnet/ip/lookup.h>
-
+#include <vnet/ip/ip_feature_registration.h>
+#include <stdbool.h>
 #include <vppinfra/bihash_24_8.h>
 #include <vppinfra/bihash_template.h>
 
@@ -102,33 +104,6 @@ typedef struct {
   uword function_opaque;
 } ip6_add_del_interface_address_callback_t;
 
-typedef enum {
-  /* First check access list to either permit or deny this
-     packet based on classification. */
-  IP6_RX_FEATURE_CHECK_ACCESS,
-
-  /* RPF check: verify that source address is reachable via
-     RX interface or via any interface. */
-  IP6_RX_FEATURE_CHECK_SOURCE_REACHABLE_VIA_RX,
-  IP6_RX_FEATURE_CHECK_SOURCE_REACHABLE_VIA_ANY,
-
-  /* IPSec */
-  IP6_RX_FEATURE_IPSEC,
-
-  /* Intercept and decap L2TPv3 packets. */
-  IP6_RX_FEATURE_L2TPV3,
-
-  /* vPath forwarding: won't return to call next feature
-     so any feature needed before vPath forwarding must be prior
-     to this entry */
-  IP6_RX_FEATURE_VPATH,
-
-  /* Must be last: perform forwarding lookup. */
-  IP6_RX_FEATURE_LOOKUP,
-
-  IP6_N_RX_FEATURE,
-} ip6_rx_feature_type_t;
-
 typedef struct ip6_main_t {
   BVT(clib_bihash) ip6_lookup_table;
 
@@ -167,6 +142,21 @@ typedef struct ip6_main_t {
   u32 lookup_table_nbuckets;
   uword lookup_table_size;
 
+  /* feature path configuration lists */
+  vnet_ip_feature_registration_t * next_uc_feature;
+  vnet_ip_feature_registration_t * next_mc_feature;
+
+  /* Built-in unicast feature path indices, see ip_feature_init_cast(...)  */
+  u32 ip6_unicast_rx_feature_check_access;
+  u32 ip6_unicast_rx_feature_ipsec;
+  u32 ip6_unicast_rx_feature_l2tp_decap;
+  u32 ip6_unicast_rx_feature_vpath;
+  u32 ip6_unicast_rx_feature_lookup;
+
+  /* Built-in multicast feature path indices */
+  u32 ip6_multicast_rx_feature_vpath;
+  u32 ip6_multicast_rx_feature_lookup;
+
   /* Seed for Jenkins hash used to compute ip6 flow hash. */
   u32 flow_hash_seed;
 
@@ -176,14 +166,42 @@ typedef struct ip6_main_t {
 
     u8 pad[3];
   } host_config;
+
+  /* HBH processing enabled? */
+  u8 hbh_enabled;
 } ip6_main_t;
 
 /* Global ip6 main structure. */
 extern ip6_main_t ip6_main;
 
+#define VNET_IP6_UNICAST_FEATURE_INIT(x,...)                    \
+  __VA_ARGS__ vnet_ip_feature_registration_t uc_##x;            \
+static void __vnet_add_feature_registration_uc_##x (void)       \
+  __attribute__((__constructor__)) ;                            \
+static void __vnet_add_feature_registration_uc_##x (void)       \
+{                                                               \
+  ip6_main_t * im = &ip6_main;                                  \
+  uc_##x.next = im->next_uc_feature;                            \
+  im->next_uc_feature = &uc_##x;                                \
+}                                                               \
+__VA_ARGS__ vnet_ip_feature_registration_t uc_##x 
+
+#define VNET_IP6_MULTICAST_FEATURE_INIT(x,...)                  \
+  __VA_ARGS__ vnet_ip_feature_registration_t mc_##x;            \
+static void __vnet_add_feature_registration_mc_##x (void)       \
+  __attribute__((__constructor__)) ;                            \
+static void __vnet_add_feature_registration_mc_##x (void)       \
+{                                                               \
+  ip6_main_t * im = &ip6_main;                                  \
+  mc_##x.next = im->next_mc_feature;                            \
+  im->next_mc_feature = &mc_##x;                                \
+}                                                               \
+__VA_ARGS__ vnet_ip_feature_registration_t mc_##x 
+
 /* Global ip6 input node.  Errors get attached to ip6 input node. */
 extern vlib_node_registration_t ip6_input_node;
 extern vlib_node_registration_t ip6_rewrite_node;
+extern vlib_node_registration_t ip6_rewrite_local_node;
 extern vlib_node_registration_t ip6_discover_neighbor_node;
 
 extern vlib_node_registration_t ip6_icmp_neighbor_discovery_event_node;
@@ -271,13 +289,16 @@ ip6_unaligned_destination_matches_route (ip6_main_t * im,
   return 1;
 }
 
-always_inline void
+always_inline int
 ip6_src_address_for_packet (ip6_main_t * im, vlib_buffer_t * p, ip6_address_t * src, u32 sw_if_index)
 {
   ip_lookup_main_t * lm = &im->lookup_main;
   ip_interface_address_t * ia = ip_interface_address_for_packet (lm, p, sw_if_index);
+  if (ia == NULL)
+    return -1;
   ip6_address_t * a = ip_interface_address_get_address (lm, ia);
   *src = a[0];
+  return 0;
 }
 
 always_inline u32
@@ -521,4 +542,23 @@ ip6_compute_flow_hash (ip6_header_t * ip, u32 flow_hash_config)
     return (u32) c;
 }
 
+/*
+ * Hop-by-Hop handling
+ */
+typedef struct {
+  /* Array of function pointers to HBH option handling routines */
+  int (*options[256])(vlib_buffer_t *b, ip6_header_t *ip, ip6_hop_by_hop_option_t *opt);
+  u8 *(*trace[256])(u8 *s, ip6_hop_by_hop_option_t *opt);
+} ip6_hop_by_hop_main_t;
+
+extern ip6_hop_by_hop_main_t ip6_hop_by_hop_main;
+
+int ip6_hbh_register_option (u8 option,
+                            int options(vlib_buffer_t *b, ip6_header_t *ip, ip6_hop_by_hop_option_t *opt),
+                            u8 *trace(u8 *s, ip6_hop_by_hop_option_t *opt));
+int ip6_hbh_unregister_option (u8 option);
+
+/* Flag used by IOAM code. Classifier sets it pop-hop-by-hop checks it */
+#define OI_DECAP   100
+
 #endif /* included_ip_ip6_h */