ip: Replace Sematics for Interface IP addresses
[vpp.git] / src / vnet / ip / lookup.h
index 28a4bd8..49ed0bb 100644 (file)
@@ -64,6 +64,7 @@
 #define IP_FLOW_HASH_SRC_PORT (1<<3)
 #define IP_FLOW_HASH_DST_PORT (1<<4)
 #define IP_FLOW_HASH_REVERSE_SRC_DST (1<<5)
+#define IP_FLOW_HASH_SYMMETRIC (1<<6)
 
 /** Default: 5-tuple without the "reverse" bit */
 #define IP_FLOW_HASH_DEFAULT (0x1F)
@@ -74,7 +75,8 @@ _(dst, IP_FLOW_HASH_DST_ADDR)                   \
 _(sport, IP_FLOW_HASH_SRC_PORT)                 \
 _(dport, IP_FLOW_HASH_DST_PORT)                 \
 _(proto, IP_FLOW_HASH_PROTO)                   \
-_(reverse, IP_FLOW_HASH_REVERSE_SRC_DST)
+_(reverse, IP_FLOW_HASH_REVERSE_SRC_DST)       \
+_(symmetric, IP_FLOW_HASH_SYMMETRIC)
 
 /**
  * A flow hash configuration is a mask of the flow hash options
@@ -84,6 +86,29 @@ typedef u32 flow_hash_config_t;
 /* An all zeros address */
 extern const ip46_address_t zero_addr;
 
+typedef enum ip_interface_address_flags_t_
+{
+  IP_INTERFACE_ADDRESS_FLAG_STALE = (1 << 0),
+} __clib_packed ip_interface_address_flags_t;
+
+typedef struct
+{
+  fib_prefix_t prefix;
+
+  u32 sw_if_index;
+} ip_interface_prefix_key_t;
+
+typedef struct
+{
+  /* key - prefix and sw_if_index */
+  ip_interface_prefix_key_t key;
+
+  /* number of addresses in this prefix on the interface */
+  u16 ref_count;
+
+  /* index of the interface address used as a default source address */
+  u32 src_ia_index;
+} ip_interface_prefix_t;
 
 typedef struct
 {
@@ -96,8 +121,8 @@ typedef struct
   /* Address (prefix) length for this interface. */
   u16 address_length;
 
-  /* Will be used for something eventually.  Primary vs. secondary? */
-  u16 flags;
+  /* flags relating to this prefix */
+  ip_interface_address_flags_t flags;
 
   /* Next and previous pointers for doubly linked list of
      addresses per software interface. */
@@ -111,6 +136,7 @@ typedef enum
   IP_LOCAL_NEXT_PUNT,
   IP_LOCAL_NEXT_UDP_LOOKUP,
   IP_LOCAL_NEXT_ICMP,
+  IP_LOCAL_NEXT_REASSEMBLY,
   IP_LOCAL_N_NEXT,
 } ip_local_next_t;
 
@@ -128,6 +154,12 @@ typedef struct ip_lookup_main_t
      ~0 means this interface has no address. */
   u32 *if_address_pool_index_by_sw_if_index;
 
+  /** Pool of prefixes containing addresses assigned to interfaces */
+  ip_interface_prefix_t *if_prefix_pool;
+
+  /** Hash table mapping prefix to index in interface prefix pool */
+  mhash_t prefix_to_if_prefix_index;
+
   /** First table index to use for this interface, ~0 => none */
   u32 *classify_table_index_by_sw_if_index;
 
@@ -153,68 +185,40 @@ typedef struct ip_lookup_main_t
   u8 builtin_protocol_by_ip_protocol[256];
 } ip_lookup_main_t;
 
-clib_error_t *ip_interface_address_add_del (ip_lookup_main_t * lm,
-                                           u32 sw_if_index,
-                                           void *address,
-                                           u32 address_length,
-                                           u32 is_del, u32 * result_index);
-
 u8 *format_ip_flow_hash_config (u8 * s, va_list * args);
 
-always_inline ip_interface_address_t *
-ip_get_interface_address (ip_lookup_main_t * lm, void *addr_fib)
+
+always_inline void
+ip_lookup_set_buffer_fib_index (u32 * fib_index_by_sw_if_index,
+                               vlib_buffer_t * b)
 {
-  uword *p = mhash_get (&lm->address_to_if_address_index, addr_fib);
-  return p ? pool_elt_at_index (lm->if_address_pool, p[0]) : 0;
+  /* *INDENT-OFF* */
+  vnet_buffer (b)->ip.fib_index =
+    vec_elt (fib_index_by_sw_if_index, vnet_buffer (b)->sw_if_index[VLIB_RX]);
+  vnet_buffer (b)->ip.fib_index =
+    ((vnet_buffer (b)->sw_if_index[VLIB_TX] ==  (u32) ~ 0) ?
+     vnet_buffer (b)->ip.fib_index :
+     vnet_buffer (b)->sw_if_index[VLIB_TX]);
+  /* *INDENT-ON* */
 }
 
-always_inline void *
-ip_interface_address_get_address (ip_lookup_main_t * lm,
-                                 ip_interface_address_t * a)
+typedef struct _vnet_ip_container_proxy_args
 {
-  return mhash_key_to_mem (&lm->address_to_if_address_index, a->address_key);
-}
+  fib_prefix_t prefix;
+  u32 sw_if_index;
+  u8 is_add;
+} vnet_ip_container_proxy_args_t;
 
-/* *INDENT-OFF* */
-#define foreach_ip_interface_address(lm,a,sw_if_index,loop,body)        \
-do {                                                                    \
-    vnet_main_t *_vnm = vnet_get_main();                                \
-    u32 _sw_if_index = sw_if_index;                                     \
-    vnet_sw_interface_t *_swif;                                         \
-    _swif = vnet_get_sw_interface (_vnm, _sw_if_index);                 \
-                                                                        \
-    /*                                                                  \
-     * Loop => honor unnumbered interface addressing.                   \
-     */                                                                 \
-    if (_swif->flags & VNET_SW_INTERFACE_FLAG_UNNUMBERED)               \
-      {                                                                 \
-        if (loop)                                                       \
-          _sw_if_index = _swif->unnumbered_sw_if_index;                 \
-        else                                                            \
-          /* the interface is unnumbered, by the caller does not want   \
-           * unnumbered interfaces considered/honoured */               \
-          break;                                                        \
-      }                                                                 \
-    u32 _ia = ((vec_len((lm)->if_address_pool_index_by_sw_if_index)     \
-                > (_sw_if_index)) ?                                     \
-               vec_elt ((lm)->if_address_pool_index_by_sw_if_index,     \
-                        (_sw_if_index)) :                               \
-               (u32)~0);                                                \
-    ip_interface_address_t * _a;                                        \
-    while (_ia != ~0)                                                   \
-    {                                                                   \
-        _a = pool_elt_at_index ((lm)->if_address_pool, _ia);            \
-        _ia = _a->next_this_sw_interface;                               \
-        (a) = _a;                                                       \
-        body;                                                           \
-    }                                                                   \
-} while (0)
-/* *INDENT-ON* */
+clib_error_t *vnet_ip_container_proxy_add_del (vnet_ip_container_proxy_args_t
+                                              * args);
+
+typedef int (*ip_container_proxy_cb_t) (const fib_prefix_t * pfx,
+                                       u32 sw_if_index, void *ctx);
+void ip_container_proxy_walk (ip_container_proxy_cb_t cb, void *ctx);
 
 void ip_lookup_init (ip_lookup_main_t * lm, u32 ip_lookup_node_index);
 
 #endif /* included_ip_lookup_h */
-
 /*
  * fd.io coding-style-patch-verification: ON
  *