ipsec: add fast path configuration parser
Parser can be configured from the level of startup.conf file:
fast path can be enabled and disabled.
Type: feature
#include <vnet/ipsec/ah.h>
#include <vnet/ipsec/ipsec_tun.h>
#include <vnet/ipsec/ipsec_itf.h>
+#include <vnet/ipsec/ipsec_spd_fp_lookup.h>
/* Flow cache is sized for 1 million flows with a load factor of .25.
*/
#define IPSEC4_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;
@@ -635,11 +637,26 @@ ipsec_config (vlib_main_t *vm, unformat_input_t *input)
u32 ipsec4_out_spd_hash_num_buckets;
u32 ipsec4_in_spd_hash_num_buckets;
+ u32 ipsec_spd_fp_num_buckets;
while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
{
- if (unformat (input, "ipv4-outbound-spd-flow-cache on"))
- im->output_flow_cache_flag = 1;
+ if (unformat (input, "ipv4-outbound-spd-fast-path on"))
+ {
+ im->fp_spd_is_enabled = 1;
+ im->output_flow_cache_flag = 0;
+ }
+ else if (unformat (input, "ipv4-outbound-spd-fast-path off"))
+ im->fp_spd_is_enabled = 0;
+ else if (unformat (input, "spd-fast-path-num-buckets %d",
+ &ipsec_spd_fp_num_buckets))
+ {
+ /* Number of bihash buckets is power of 2 >= input */
+ im->fp_lookup_hash_buckets = 1ULL
+ << max_log2 (ipsec_spd_fp_num_buckets);
+ }
+ else if (unformat (input, "ipv4-outbound-spd-flow-cache on"))
+ im->output_flow_cache_flag = im->fp_spd_is_enabled ? 0 : 1;
else if (unformat (input, "ipv4-outbound-spd-flow-cache off"))
im->output_flow_cache_flag = 0;
else if (unformat (input, "ipv4-outbound-spd-hash-buckets %d",
