* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
+/** @file Definitions for all things IP (v4|v6) unicast and multicast lookup related.
+ - Adjacency definitions and registration
+ - callbacks on route add
+ - callbacks on interface address change
+ */
#ifndef included_ip_lookup_h
#define included_ip_lookup_h
} ip4_lookup_next_t;
typedef enum {
- /* Hop-by-hop header handling */
+ /** Hop-by-hop header handling */
IP6_LOOKUP_NEXT_HOP_BY_HOP = IP_LOOKUP_N_NEXT,
IP6_LOOKUP_NEXT_ADD_HOP_BY_HOP,
IP6_LOOKUP_NEXT_POP_HOP_BY_HOP,
[IP6_LOOKUP_NEXT_POP_HOP_BY_HOP] = "ip6-pop-hop-by-hop", \
}
-/* Flow hash configuration */
+/** Flow hash configuration */
#define IP_FLOW_HASH_SRC_ADDR (1<<0)
#define IP_FLOW_HASH_DST_ADDR (1<<1)
#define IP_FLOW_HASH_PROTO (1<<2)
#define IP_FLOW_HASH_DST_PORT (1<<4)
#define IP_FLOW_HASH_REVERSE_SRC_DST (1<<5)
-/* Default: 5-tuple without the "reverse" bit */
+/** Default: 5-tuple without the "reverse" bit */
#define IP_FLOW_HASH_DEFAULT (0x1F)
#define foreach_flow_hash_bit \
_(reverse, IP_FLOW_HASH_REVERSE_SRC_DST)
#define IP_ADJACENCY_OPAQUE_SZ 16
-/* IP unicast adjacency. */
+/** @brief IP unicast adjacency.
+ @note cache aligned.
+*/
typedef struct {
CLIB_CACHE_LINE_ALIGN_MARK(cacheline0);
- /* Handle for this adjacency in adjacency heap. */
+ /** Handle for this adjacency in adjacency heap. */
u32 heap_handle;
STRUCT_MARK(signature_start);
- /* Interface address index for this local/arp adjacency. */
+ /** Interface address index for this local/arp adjacency. */
u32 if_address_index;
- /* Number of adjecencies in block. Greater than 1 means multipath;
+ /** Number of adjecencies in block. Greater than 1 means multipath;
otherwise equal to 1. */
u16 n_adj;
- /* Next hop after ip4-lookup. */
+ /** Next hop after ip4-lookup. */
union {
ip_lookup_next_t lookup_next_index : 16;
u16 lookup_next_index_as_int;
};
- /* Force re-lookup in a different FIB. ~0 => normal behavior */
+ /** Force re-lookup in a different FIB. ~0 => normal behavior */
i16 explicit_fib_index;
u16 mcast_group_index;
- /* Highest possible perf subgraph arc interposition, e.g. for ip6 ioam */
+ /** Highest possible perf subgraph arc interposition, e.g. for ip6 ioam */
u16 saved_lookup_next_index;
union {
- /* IP_LOOKUP_NEXT_ARP only */
+ /** IP_LOOKUP_NEXT_ARP only */
struct {
ip46_address_t next_hop;
} arp;
- /* IP_LOOKUP_NEXT_CLASSIFY only */
+ /** IP_LOOKUP_NEXT_CLASSIFY only */
struct {
u16 table_index;
} classify;
- /* IP_LOOKUP_NEXT_INDIRECT only */
+ /** IP_LOOKUP_NEXT_INDIRECT only */
struct {
ip46_address_t next_hop;
} indirect;
u8 opaque[IP_ADJACENCY_OPAQUE_SZ];
};
- /*
- * Special format function for this adjacency.
+ /** @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 */
STRUCT_MARK(signature_end);
- /* Number of FIB entries sharing this adjacency */
+ /** Number of FIB entries sharing this adjacency */
u32 share_count;
- /* Use this adjacency instead */
+ /** Use this adjacency instead */
u32 next_adj_with_signature;
CLIB_CACHE_LINE_ALIGN_MARK(cacheline1);
- /* Rewrite in second/third cache lines */
+ /** Rewrite in second/third cache lines */
vnet_declare_rewrite (VLIB_BUFFER_PRE_DATA_SIZE);
} ip_adjacency_t;
} ip_adj_register_t;
typedef struct ip_lookup_main_t {
- /* Adjacency heap. */
+ /** Adjacency heap. */
ip_adjacency_t * adjacency_heap;
- /* Adjacency packet/byte counters indexed by adjacency index. */
+ /** Adjacency packet/byte counters indexed by adjacency index. */
vlib_combined_counter_main_t adjacency_counters;
- /* Heap of (next hop, weight) blocks. Sorted by next hop. */
+ /** Heap of (next hop, weight) blocks. Sorted by next hop. */
ip_multipath_next_hop_t * next_hop_heap;
- /* Indexed by heap_handle from ip_adjacency_t. */
+ /** Indexed by heap_handle from ip_adjacency_t. */
ip_multipath_adjacency_t * multipath_adjacencies;
- /* Adjacency by signature hash */
+ /** Adjacency by signature hash */
uword * adj_index_by_signature;
- /* Temporary vectors for looking up next hops in hash. */
+ /** Temporary vectors for looking up next hops in hash. */
ip_multipath_next_hop_t * next_hop_hash_lookup_key;
ip_multipath_next_hop_t * next_hop_hash_lookup_key_normalized;
- /* Hash table mapping normalized next hops and weights
+ /** Hash table mapping normalized next hops and weights
to multipath adjacency index. */
uword * multipath_adjacency_by_next_hops;
u32 * adjacency_remap_table;
u32 n_adjacency_remaps;
- /* If average error per adjacency is less than this threshold adjacency block
+ /** If average error per adjacency is less than this threshold adjacency block
size is accepted. */
f64 multipath_next_hop_error_tolerance;
- /* Adjacency index for routing table misses, local punts, and drops. */
+ /** Adjacency index for routing table misses, local punts, and drops. */
u32 miss_adj_index, drop_adj_index, local_adj_index;
- /* Miss adjacency is always first in adjacency table. */
+ /** Miss adjacency is always first in adjacency table. */
#define IP_LOOKUP_MISS_ADJ_INDEX 0
ip_add_del_adjacency_callback_t * add_del_adjacency_callbacks;
- /* Pool of addresses that are assigned to interfaces. */
+ /** Pool of addresses that are assigned to interfaces. */
ip_interface_address_t * if_address_pool;
- /* Hash table mapping address to index in interface address pool. */
+ /** Hash table mapping address to index in interface address pool. */
mhash_t address_to_if_address_index;
- /* Head of doubly linked list of interface addresses for each software interface.
+ /** Head of doubly linked list of interface addresses for each software interface.
~0 means this interface has no address. */
u32 * if_address_pool_index_by_sw_if_index;
- /* First table index to use for this interface, ~0 => none */
+ /** First table index to use for this interface, ~0 => none */
u32 * classify_table_index_by_sw_if_index;
- /* rx/tx interface/feature configuration. */
+ /** rx/tx interface/feature configuration. */
ip_config_main_t rx_config_mains[VNET_N_CAST], tx_config_main;
- /* Number of bytes in a fib result. Must be at least
+ /** Number of bytes in a fib result. Must be at least
sizeof (uword). First word is always adjacency index. */
u32 fib_result_n_bytes, fib_result_n_words;
format_function_t * format_fib_result;
- /* 1 for ip6; 0 for ip4. */
+ /** 1 for ip6; 0 for ip4. */
u32 is_ip6;
- /* Either format_ip4_address_and_length or format_ip6_address_and_length. */
+ /** Either format_ip4_address_and_length or format_ip6_address_and_length. */
format_function_t * format_address_and_length;
- /* Special adjacency format functions */
+ /** Special adjacency format functions */
format_function_t ** special_adjacency_format_functions;
- /* Table mapping ip protocol to ip[46]-local node next index. */
+ /** Table mapping ip protocol to ip[46]-local node next index. */
u8 local_next_by_ip_protocol[256];
- /* IP_BUILTIN_PROTOCOL_{TCP,UDP,ICMP,OTHER} by protocol in IP header. */
+ /** IP_BUILTIN_PROTOCOL_{TCP,UDP,ICMP,OTHER} by protocol in IP header. */
u8 builtin_protocol_by_ip_protocol[256];
- /* Registered adjacencies */
+ /** Registered adjacencies */
ip_adj_register_t *registered_adjacencies;
} ip_lookup_main_t;
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