#include <vnet/ipsec/esp.h>
#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_OUT_SPD_DEFAULT_HASH_NUM_BUCKETS (1 << 22)
+
+/* 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;
+clib_error_t *
+ipsec_register_next_header (vlib_main_t *vm, u8 next_header,
+ const char *next_node)
+{
+ ipsec_main_t *im = &ipsec_main;
+ const vlib_node_t *node = vlib_get_node_by_name (vm, (u8 *) next_node);
+ /* -post nodes (eg. esp4-decrypt-post) are siblings of non-post nodes (eg.
+ * esp4-decrypt) and will therefore have the same next index */
+ const vlib_node_t *esp_decrypt_nodes[] = {
+ vlib_get_node (vm, im->esp4_decrypt_node_index),
+ vlib_get_node (vm, im->esp6_decrypt_node_index),
+ vlib_get_node (vm, im->esp4_decrypt_tun_node_index),
+ vlib_get_node (vm, im->esp6_decrypt_tun_node_index),
+ };
+ uword slot, max;
+ int i;
+
+ /* looks for a next_index value that we can use for all esp decrypt nodes to
+ * avoid maintaining different next index arrays... */
+
+ slot = vlib_node_get_next (vm, esp_decrypt_nodes[0]->index, node->index);
+ max = vec_len (esp_decrypt_nodes[0]->next_nodes);
+ for (i = 1; i < ARRAY_LEN (esp_decrypt_nodes); i++)
+ {
+ /* if next node already exists, check it shares the same next_index */
+ if (slot !=
+ vlib_node_get_next (vm, esp_decrypt_nodes[i]->index, node->index))
+ return clib_error_return (
+ 0, "next node already exists with different next index");
+ /* compute a suitable slot from the max of all nodes next index */
+ max = clib_max (max, vec_len (esp_decrypt_nodes[i]->next_nodes));
+ }
+
+ if (~0 == slot)
+ {
+ /* next node not there yet, add it using the computed max */
+ slot = max;
+ for (i = 0; i < ARRAY_LEN (esp_decrypt_nodes); i++)
+ vlib_node_add_next_with_slot (vm, esp_decrypt_nodes[i]->index,
+ node->index, slot);
+ }
+
+ im->next_header_registrations[next_header] = slot;
+ return 0;
+}
+
static clib_error_t *
ipsec_check_ah_support (ipsec_sa_t * sa)
{
*out_next_index = vlib_node_add_next (vm, prev_node->index, node->index);
}
+static inline uword
+ipsec_udp_registration_key (u16 port, u8 is_ip4)
+{
+ uword key = (is_ip4) ? AF_IP4 : AF_IP6;
+
+ key |= (uword) (port << 16);
+ return key;
+}
+
void
-ipsec_unregister_udp_port (u16 port)
+ipsec_unregister_udp_port (u16 port, u8 is_ip4)
{
ipsec_main_t *im = &ipsec_main;
u32 n_regs;
- uword *p;
+ uword *p, key;
- p = hash_get (im->udp_port_registrations, port);
+ key = ipsec_udp_registration_key (port, is_ip4);
+ p = hash_get (im->udp_port_registrations, key);
ASSERT (p);
if (0 == --n_regs)
{
- udp_unregister_dst_port (vlib_get_main (), port, 1);
- hash_unset (im->udp_port_registrations, port);
+ udp_unregister_dst_port (vlib_get_main (), port, is_ip4);
+ hash_unset (im->udp_port_registrations, key);
}
else
{
- hash_unset (im->udp_port_registrations, port);
- hash_set (im->udp_port_registrations, port, n_regs);
+ hash_unset (im->udp_port_registrations, key);
+ hash_set (im->udp_port_registrations, key, n_regs);
}
}
void
-ipsec_register_udp_port (u16 port)
+ipsec_register_udp_port (u16 port, u8 is_ip4)
{
ipsec_main_t *im = &ipsec_main;
- u32 n_regs;
- uword *p;
+ u32 n_regs, node_index;
+ uword *p, key;
- p = hash_get (im->udp_port_registrations, port);
+ key = ipsec_udp_registration_key (port, is_ip4);
+ node_index =
+ (is_ip4) ? ipsec4_tun_input_node.index : ipsec6_tun_input_node.index;
+ p = hash_get (im->udp_port_registrations, key);
n_regs = (p ? p[0] : 0);
if (0 == n_regs++)
- udp_register_dst_port (vlib_get_main (), port,
- ipsec4_tun_input_node.index, 1);
+ udp_register_dst_port (vlib_get_main (), port, node_index, is_ip4);
- hash_unset (im->udp_port_registrations, port);
- hash_set (im->udp_port_registrations, port, n_regs);
+ hash_unset (im->udp_port_registrations, key);
+ hash_set (im->udp_port_registrations, key, n_regs);
}
u32
if (pool_elts (ipsec_sa_pool) > 0)
return clib_error_return (0, "%d SA entries configured",
pool_elts (ipsec_sa_pool));
+ if (ipsec_itf_count () > 0)
+ return clib_error_return (0, "%d IPSec interface configured",
+ ipsec_itf_count ());
return (NULL);
}
if ((error = vlib_call_init_function (vm, ipsec_cli_init)))
return error;
+ im->ipv4_fp_spd_is_enabled = 0;
+ im->ipv6_fp_spd_is_enabled = 0;
+
+ im->fp_lookup_hash_buckets = IPSEC_FP_HASH_LOOKUP_HASH_BUCKETS;
+
vec_validate (im->crypto_algs, IPSEC_CRYPTO_N_ALG - 1);
a = im->crypto_algs + IPSEC_CRYPTO_ALG_NONE;
im->async_mode = 0;
crypto_engine_backend_register_post_node (vm);
+ im->ipsec4_out_spd_hash_tbl = NULL;
+ im->output_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;
+
+ im->ipsec4_in_spd_hash_tbl = NULL;
+ im->input_flow_cache_flag = 0;
+ im->ipsec4_in_spd_flow_cache_entries = 0;
+ im->input_epoch_count = 0;
+ im->ipsec4_in_spd_hash_num_buckets = IPSEC4_SPD_DEFAULT_HASH_NUM_BUCKETS;
+
+ vec_validate_init_empty_aligned (im->next_header_registrations, 255, ~0,
+ CLIB_CACHE_LINE_BYTES);
+
return 0;
}
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;
+ 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, "ip4 %U", unformat_vlib_cli_sub_input, &sub_input))
+ if (unformat (input, "ipv6-outbound-spd-fast-path on"))
+ {
+ im->ipv6_fp_spd_is_enabled = 1;
+ }
+ else if (unformat (input, "ipv6-outbound-spd-fast-path off"))
+ im->ipv6_fp_spd_is_enabled = 0;
+ else if (unformat (input, "ipv4-outbound-spd-fast-path on"))
+ {
+ im->ipv4_fp_spd_is_enabled = 1;
+ im->output_flow_cache_flag = 0;
+ }
+ else if (unformat (input, "ipv4-outbound-spd-fast-path off"))
+ im->ipv4_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->ipv4_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",
+ &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, "ipv4-inbound-spd-flow-cache on"))
+ im->input_flow_cache_flag = 1;
+ else if (unformat (input, "ipv4-inbound-spd-flow-cache off"))
+ im->input_flow_cache_flag = 0;
+ else if (unformat (input, "ipv4-inbound-spd-hash-buckets %d",
+ &ipsec4_in_spd_hash_num_buckets))
+ {
+ im->ipsec4_in_spd_hash_num_buckets =
+ 1ULL << max_log2 (ipsec4_in_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;
return clib_error_return (0, "unknown input `%U'",
format_unformat_error, input);
}
+ if (im->output_flow_cache_flag)
+ {
+ vec_add2 (im->ipsec4_out_spd_hash_tbl, im->ipsec4_out_spd_hash_tbl,
+ im->ipsec4_out_spd_hash_num_buckets);
+ }
+ if (im->input_flow_cache_flag)
+ {
+ vec_add2 (im->ipsec4_in_spd_hash_tbl, im->ipsec4_in_spd_hash_tbl,
+ im->ipsec4_in_spd_hash_num_buckets);
+ }
return 0;
}
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