#include <vnet/ip/ip6_packet.h>
#include <vnet/fib/fib_node.h>
#include <vnet/dpo/dpo.h>
+#include <vnet/ip/ip_feature_registration.h>
/** @brief Common (IP4/IP6) next index stored in adjacency. */
typedef enum {
*/
typedef u32 flow_hash_config_t;
-#define IP_ADJACENCY_OPAQUE_SZ 16
+/**
+ * Forward delcartion
+ */
+struct ip_adjacency_t_;
+
+/**
+ * @brief A function type for post-rewrite fixups on midchain adjacency
+ */
+typedef void (*adj_midchain_fixup_t)(vlib_main_t * vm,
+ struct ip_adjacency_t_ *adj,
+ vlib_buffer_t * b0);
+
/** @brief IP unicast adjacency.
@note cache aligned.
*/
-typedef struct {
+typedef struct ip_adjacency_t_ {
CLIB_CACHE_LINE_ALIGN_MARK(cacheline0);
/* Handle for this adjacency in adjacency heap. */
u32 heap_handle;
* The next DPO to use
*/
dpo_id_t next_dpo;
+
+ /**
+ * A function to perform the post-rewrite fixup
+ */
+ adj_midchain_fixup_t fixup_func;
} midchain;
/**
* IP_LOOKUP_NEXT_GLEAN
ip46_address_t receive_addr;
} glean;
} sub_type;
- u16 opaque[IP_ADJACENCY_OPAQUE_SZ];
};
- /** @brief Special format function for this adjacency.
- * Specifically good for cases which use the entire rewrite
- * for their own purposes. Can easily reduce to a u16 or a u8 if/when
- * the first cache line reads "full" on the free space gas gauge.
- */
- u32 special_adjacency_format_function_index; /* 0 is invalid */
-
CLIB_CACHE_LINE_ALIGN_MARK(cacheline1);
/* Rewrite in second/third cache lines */
vnet_declare_rewrite (VLIB_BUFFER_PRE_DATA_SIZE);
- /*
- * member not accessed in the data plane are relgated to the
- * remaining cachelines
- */
- fib_node_t ia_node;
+ /*
+ * member not accessed in the data plane are relgated to the
+ * remaining cachelines
+ */
+ fib_node_t ia_node;
} ip_adjacency_t;
_Static_assert((STRUCT_OFFSET_OF(ip_adjacency_t, cacheline0) == 0),
/* An all zeros address */
extern const ip46_address_t zero_addr;
-/* Index into adjacency table. */
-typedef u32 ip_adjacency_index_t;
-
-typedef struct {
- /* Adjacency index of first index in block. */
- u32 adj_index;
-
- /* Power of 2 size of adjacency block. */
- u32 n_adj_in_block;
-
- /* Number of prefixes that point to this adjacency. */
- u32 reference_count;
-
- /* Normalized next hops are saved for stats/display purposes */
- struct {
- /* Number of hops in the multipath. */
- u32 count;
-
- /* Offset into next hop heap for this block. */
- u32 heap_offset;
-
- /* Heap handle used to for example free block when we're done with it. */
- u32 heap_handle;
- } normalized_next_hops;
-} ip_multipath_adjacency_t;
-
/* IP multicast adjacency. */
typedef struct {
/* Handle for this adjacency in adjacency heap. */
ip_adjacency_t * adj,
u32 is_del);
-typedef struct {
- vnet_config_main_t config_main;
-
- u32 * config_index_by_sw_if_index;
-} ip_config_main_t;
-
-/**
- * This structure is used to dynamically register a custom adjacency
- * for ip lookup.
- * Typically used with
- * VNET_IP4_REGISTER_ADJACENCY or
- * VNET_IP6_REGISTER_ADJACENCY macros.
- */
-typedef struct ip_adj_register_struct {
- /** Name of the node for this registered adjacency. */
- char *node_name;
-
- /** Formatting function for the adjacency.
- * Variadic arguments given to the function are:
- * - struct ip_lookup_main_t *
- * - ip_adjacency_t *adj
- */
- format_function_t *fn;
-
- /**
- * When the adjacency is registered, the ip-lookup next index will
- * be written where this pointer points.
- */
- u32 *next_index;
-
- struct ip_adj_register_struct *next;
-} ip_adj_register_t;
-
typedef struct ip_lookup_main_t {
/* Adjacency heap. */
ip_adjacency_t * adjacency_heap;
/** IP_BUILTIN_PROTOCOL_{TCP,UDP,ICMP,OTHER} by protocol in IP header. */
u8 builtin_protocol_by_ip_protocol[256];
-
- /** Registered adjacencies */
- ip_adj_register_t *registered_adjacencies;
} ip_lookup_main_t;
always_inline ip_adjacency_t *
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