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-rw-r--r--src/vnet/ipsec/ipsec.c32
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;
}