diff options
Diffstat (limited to 'src/vnet/ipsec/ipsec.c')
| -rw-r--r-- | src/vnet/ipsec/ipsec.c | 32 |
1 files changed, 31 insertions, 1 deletions
diff --git a/src/vnet/ipsec/ipsec.c b/src/vnet/ipsec/ipsec.c index d154b519ecb..30774ec10ff 100644 --- a/src/vnet/ipsec/ipsec.c +++ b/src/vnet/ipsec/ipsec.c @@ -26,6 +26,10 @@ #include <vnet/ipsec/ah.h> #include <vnet/ipsec/ipsec_tun.h> +/* Flow cache is sized for 1 million flows with a load factor of .25. + */ +#define IPSEC4_OUT_SPD_DEFAULT_HASH_NUM_BUCKETS (1 << 22) + ipsec_main_t ipsec_main; esp_async_post_next_t esp_encrypt_async_next; esp_async_post_next_t esp_decrypt_async_next; @@ -545,6 +549,13 @@ ipsec_init (vlib_main_t * vm) im->async_mode = 0; crypto_engine_backend_register_post_node (vm); + im->ipsec4_out_spd_hash_tbl = NULL; + im->flow_cache_flag = 0; + im->ipsec4_out_spd_flow_cache_entries = 0; + im->epoch_count = 0; + im->ipsec4_out_spd_hash_num_buckets = + IPSEC4_OUT_SPD_DEFAULT_HASH_NUM_BUCKETS; + return 0; } @@ -553,11 +564,25 @@ VLIB_INIT_FUNCTION (ipsec_init); static clib_error_t * ipsec_config (vlib_main_t *vm, unformat_input_t *input) { + ipsec_main_t *im = &ipsec_main; unformat_input_t sub_input; + u32 ipsec4_out_spd_hash_num_buckets; while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) { - if (unformat (input, "ip4 %U", unformat_vlib_cli_sub_input, &sub_input)) + if (unformat (input, "ipv4-outbound-spd-flow-cache on")) + im->flow_cache_flag = 1; + else if (unformat (input, "ipv4-outbound-spd-flow-cache off")) + im->flow_cache_flag = 0; + else if (unformat (input, "ipv4-outbound-spd-hash-buckets %d", + &ipsec4_out_spd_hash_num_buckets)) + { + /* Size of hash is power of 2 >= number of buckets */ + im->ipsec4_out_spd_hash_num_buckets = + 1ULL << max_log2 (ipsec4_out_spd_hash_num_buckets); + } + else if (unformat (input, "ip4 %U", unformat_vlib_cli_sub_input, + &sub_input)) { uword table_size = ~0; u32 n_buckets = ~0; @@ -594,6 +619,11 @@ ipsec_config (vlib_main_t *vm, unformat_input_t *input) return clib_error_return (0, "unknown input `%U'", format_unformat_error, input); } + if (im->flow_cache_flag) + { + vec_add2 (im->ipsec4_out_spd_hash_tbl, im->ipsec4_out_spd_hash_tbl, + im->ipsec4_out_spd_hash_num_buckets); + } return 0; } |