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Vector Packet Processing
l2_fib.h File Reference
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Data Structures

struct  l2fib_main_t
 
struct  l2fib_entry_key_t
 
struct  l2fib_seq_num_t
 
struct  l2fib_entry_result_t_
 

Macros

#define L2FIB_NUM_BUCKETS   (64 * 1024)
 
#define L2FIB_MEMORY_SIZE   (512<<20)
 
#define L2FIB_AGE_SCAN_INTERVAL   (60.0)
 
#define L2FIB_EVENT_SCAN_DELAY_DEFAULT   (0.1)
 
#define L2FIB_EVENT_MAX_MACS_DEFAULT   (100)
 
#define L2FIB_EVENT_LEARN_LIMIT_DEFAULT   (1000)
 
#define foreach_l2fib_entry_result_attr
 Flags associated with an L2 Fib Entry. More...
 

Typedefs

typedef enum l2fib_entry_result_flags_t_ l2fib_entry_result_flags_t
 
typedef struct l2fib_entry_result_t_ l2fib_entry_result_t
 

Enumerations

enum  l2fib_entry_result_flags_t_ { L2FIB_ENTRY_RESULT_FLAG_NONE = 0, foreach_l2fib_entry_result_attr }
 
enum  l2_mac_event_action_t { MAC_EVENT_ACTION_ADD = 0, MAC_EVENT_ACTION_DELETE = 1, MAC_EVENT_ACTION_MOVE = 2 }
 

Functions

 STATIC_ASSERT_SIZEOF (l2fib_entry_key_t, 8)
 
 STATIC_ASSERT_SIZEOF (l2fib_entry_result_flags_t, 1)
 
u8format_l2fib_entry_result_flags (u8 *s, va_list *args)
 
 STATIC_ASSERT_SIZEOF (l2fib_entry_result_t, 8)
 
static foreach_l2fib_entry_result_attr void l2fib_entry_result_set_bits (l2fib_entry_result_t *r, l2fib_entry_result_flags_t bits)
 
static void l2fib_entry_result_clear_bits (l2fib_entry_result_t *r, l2fib_entry_result_flags_t bits)
 
static u32 l2fib_compute_hash_bucket (l2fib_entry_key_t *key)
 Compute the hash for the given key and return the corresponding bucket index. More...
 
static u64 l2fib_make_key (const u8 *mac_address, u16 bd_index)
 make address sanitizer skip this: The 6-Bytes mac-address is cast into an 8-Bytes u64, with 2 additional Bytes. More...
 
static_always_inline void l2fib_lookup_1 (BVT(clib_bihash)*mac_table, l2fib_entry_key_t *cached_key, l2fib_entry_result_t *cached_result, u8 *mac0, u16 bd_index0, l2fib_entry_key_t *key0, l2fib_entry_result_t *result0)
 Lookup the entry for mac and bd_index in the mac table for 1 packet. More...
 
static_always_inline void l2fib_lookup_2 (BVT(clib_bihash)*mac_table, l2fib_entry_key_t *cached_key, l2fib_entry_result_t *cached_result, u8 *mac0, u8 *mac1, u16 bd_index0, u16 bd_index1, l2fib_entry_key_t *key0, l2fib_entry_key_t *key1, l2fib_entry_result_t *result0, l2fib_entry_result_t *result1)
 Lookup the entry for mac and bd_index in the mac table for 2 packets. More...
 
static_always_inline void l2fib_lookup_4 (BVT(clib_bihash)*mac_table, l2fib_entry_key_t *cached_key, l2fib_entry_result_t *cached_result, const u8 *mac0, const u8 *mac1, const u8 *mac2, const u8 *mac3, u16 bd_index0, u16 bd_index1, u16 bd_index2, u16 bd_index3, l2fib_entry_key_t *key0, l2fib_entry_key_t *key1, l2fib_entry_key_t *key2, l2fib_entry_key_t *key3, l2fib_entry_result_t *result0, l2fib_entry_result_t *result1, l2fib_entry_result_t *result2, l2fib_entry_result_t *result3)
 
void l2fib_clear_table (void)
 
void l2fib_add_entry (const u8 *mac, u32 bd_index, u32 sw_if_index, l2fib_entry_result_flags_t flags)
 Add an entry to the l2fib. More...
 
static void l2fib_add_filter_entry (const u8 *mac, u32 bd_index)
 
u32 l2fib_del_entry (const u8 *mac, u32 bd_index, u32 sw_if_index)
 Delete an entry from the l2fib. More...
 
void l2fib_start_ager_scan (vlib_main_t *vm)
 Kick off ager to scan MACs to age/delete MAC entries. More...
 
void l2fib_flush_int_mac (vlib_main_t *vm, u32 sw_if_index)
 Flush all non static MACs from an interface. More...
 
void l2fib_flush_bd_mac (vlib_main_t *vm, u32 bd_index)
 Flush all non static MACs in a bridge domain. More...
 
void l2fib_flush_all_mac (vlib_main_t *vm)
 Flush all non static MACs - flushes all valid BDs. More...
 
void l2fib_table_dump (u32 bd_index, l2fib_entry_key_t **l2fe_key, l2fib_entry_result_t **l2fe_res)
 
u8format_vnet_sw_if_index_name_with_NA (u8 *s, va_list *args)
 Format sw_if_index. More...
 
static_always_inline u8l2fib_swif_seq_num (u32 sw_if_index)
 
static_always_inline u8l2fib_valid_swif_seq_num (u32 sw_if_index)
 
 BVT (clib_bihash)*get_mac_table(void)
 

Variables

l2fib_main_t l2fib_main
 

Macro Definition Documentation

#define foreach_l2fib_entry_result_attr
Value:
_(STATIC, 0, "static") \
_(AGE_NOT, 1, "age-not") \
_(BVI, 2, "bvi") \
_(FILTER, 3, "filter") \
_(LRN_EVT, 4, "learn-event") \
_(LRN_MOV, 5, "learn-move")

Flags associated with an L2 Fib Entry.

  • static mac, no MAC move
  • not subject to age
  • mac is for a bridged virtual interface
  • drop packets to/from this mac
  • MAC learned to be sent in L2 MAC event -MAC learned is a MAC move

Definition at line 114 of file l2_fib.h.

#define L2FIB_AGE_SCAN_INTERVAL   (60.0)

Definition at line 31 of file l2_fib.h.

#define L2FIB_EVENT_LEARN_LIMIT_DEFAULT   (1000)

Definition at line 40 of file l2_fib.h.

#define L2FIB_EVENT_MAX_MACS_DEFAULT   (100)

Definition at line 37 of file l2_fib.h.

#define L2FIB_EVENT_SCAN_DELAY_DEFAULT   (0.1)

Definition at line 34 of file l2_fib.h.

#define L2FIB_MEMORY_SIZE   (512<<20)

Definition at line 28 of file l2_fib.h.

#define L2FIB_NUM_BUCKETS   (64 * 1024)

Definition at line 27 of file l2_fib.h.

Typedef Documentation

Enumeration Type Documentation

Enumerator
MAC_EVENT_ACTION_ADD 
MAC_EVENT_ACTION_DELETE 
MAC_EVENT_ACTION_MOVE 

Definition at line 191 of file l2_fib.h.

Enumerator
L2FIB_ENTRY_RESULT_FLAG_NONE 
foreach_l2fib_entry_result_attr 

Definition at line 122 of file l2_fib.h.

Function Documentation

BVT ( clib_bihash  )

Definition at line 967 of file l2_fib.c.

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u8* format_l2fib_entry_result_flags ( u8 s,
va_list *  args 
)

Definition at line 58 of file l2_fib.c.

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u8* format_vnet_sw_if_index_name_with_NA ( u8 s,
va_list *  args 
)

Format sw_if_index.

If the value is ~0, use the text "N/A"

Definition at line 91 of file l2_fib.c.

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void l2fib_add_entry ( const u8 mac,
u32  bd_index,
u32  sw_if_index,
l2fib_entry_result_flags_t  flags 
)

Add an entry to the l2fib.

If the entry already exists then overwrite it

Definition at line 400 of file l2_fib.c.

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static void l2fib_add_filter_entry ( const u8 mac,
u32  bd_index 
)
inlinestatic

Definition at line 433 of file l2_fib.h.

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void l2fib_clear_table ( void  )

Definition at line 342 of file l2_fib.c.

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static u32 l2fib_compute_hash_bucket ( l2fib_entry_key_t key)
inlinestatic

Compute the hash for the given key and return the corresponding bucket index.

Definition at line 203 of file l2_fib.h.

u32 l2fib_del_entry ( const u8 mac,
u32  bd_index,
u32  sw_if_index 
)

Delete an entry from the l2fib.

Return 0 if the entry was deleted, or 1 it was not found or if sw_if_index is non-zero and does not match that in the entry.

Definition at line 684 of file l2_fib.c.

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static void l2fib_entry_result_clear_bits ( l2fib_entry_result_t r,
l2fib_entry_result_flags_t  bits 
)
inlinestatic

Definition at line 184 of file l2_fib.h.

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static foreach_l2fib_entry_result_attr void l2fib_entry_result_set_bits ( l2fib_entry_result_t r,
l2fib_entry_result_flags_t  bits 
)
inlinestatic

Definition at line 177 of file l2_fib.h.

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void l2fib_flush_all_mac ( vlib_main_t vm)

Flush all non static MACs - flushes all valid BDs.

Definition at line 825 of file l2_fib.c.

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void l2fib_flush_bd_mac ( vlib_main_t vm,
u32  bd_index 
)

Flush all non static MACs in a bridge domain.

Definition at line 814 of file l2_fib.c.

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void l2fib_flush_int_mac ( vlib_main_t vm,
u32  sw_if_index 
)

Flush all non static MACs from an interface.

Definition at line 804 of file l2_fib.c.

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static_always_inline void l2fib_lookup_1 ( BVT(clib_bihash)*  mac_table,
l2fib_entry_key_t cached_key,
l2fib_entry_result_t cached_result,
u8 mac0,
u16  bd_index0,
l2fib_entry_key_t key0,
l2fib_entry_result_t result0 
)

Lookup the entry for mac and bd_index in the mac table for 1 packet.

Cached_key and cached_result are used as a one-entry cache. The function reads and updates them as needed.

mac0 and bd_index0 are the keys. The entry is written to result0. If the entry was not found, result0 is set to ~0.

key0 return with the computed key, convenient if the entry needs, to be updated afterward.

Definition at line 265 of file l2_fib.h.

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static_always_inline void l2fib_lookup_2 ( BVT(clib_bihash)*  mac_table,
l2fib_entry_key_t cached_key,
l2fib_entry_result_t cached_result,
u8 mac0,
u8 mac1,
u16  bd_index0,
u16  bd_index1,
l2fib_entry_key_t key0,
l2fib_entry_key_t key1,
l2fib_entry_result_t result0,
l2fib_entry_result_t result1 
)

Lookup the entry for mac and bd_index in the mac table for 2 packets.

The lookups for the two packets are interleaved.

Cached_key and cached_result are used as a one-entry cache. The function reads and updates them as needed.

mac0 and bd_index0 are the keys. The entry is written to result0. If the entry was not found, result0 is set to ~0. The same holds for mac1/bd_index1/result1.

Definition at line 309 of file l2_fib.h.

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static_always_inline void l2fib_lookup_4 ( BVT(clib_bihash)*  mac_table,
l2fib_entry_key_t cached_key,
l2fib_entry_result_t cached_result,
const u8 mac0,
const u8 mac1,
const u8 mac2,
const u8 mac3,
u16  bd_index0,
u16  bd_index1,
u16  bd_index2,
u16  bd_index3,
l2fib_entry_key_t key0,
l2fib_entry_key_t key1,
l2fib_entry_key_t key2,
l2fib_entry_key_t key3,
l2fib_entry_result_t result0,
l2fib_entry_result_t result1,
l2fib_entry_result_t result2,
l2fib_entry_result_t result3 
)

Definition at line 357 of file l2_fib.h.

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static u64 l2fib_make_key ( const u8 mac_address,
u16  bd_index 
)
inlinestatic

make address sanitizer skip this: The 6-Bytes mac-address is cast into an 8-Bytes u64, with 2 additional Bytes.

l2fib_make_key() does read those two Bytes but does not use them.

Definition at line 223 of file l2_fib.h.

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void l2fib_start_ager_scan ( vlib_main_t vm)

Kick off ager to scan MACs to age/delete MAC entries.

Definition at line 781 of file l2_fib.c.

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static_always_inline u8* l2fib_swif_seq_num ( u32  sw_if_index)

Definition at line 457 of file l2_fib.h.

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void l2fib_table_dump ( u32  bd_index,
l2fib_entry_key_t **  l2fe_key,
l2fib_entry_result_t **  l2fe_res 
)

Definition at line 131 of file l2_fib.c.

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static_always_inline u8* l2fib_valid_swif_seq_num ( u32  sw_if_index)

Definition at line 464 of file l2_fib.h.

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STATIC_ASSERT_SIZEOF ( l2fib_entry_key_t  ,
 
)
STATIC_ASSERT_SIZEOF ( l2fib_entry_result_flags_t  ,
 
)
STATIC_ASSERT_SIZEOF ( l2fib_entry_result_t  ,
 
)

Variable Documentation

l2fib_main_t l2fib_main

Definition at line 55 of file l2_fib.c.