#define __ESP_H__
#include <vnet/ip/ip.h>
+#include <vnet/crypto/crypto.h>
#include <vnet/ipsec/ipsec.h>
-#include <openssl/hmac.h>
-#include <openssl/rand.h>
-#include <openssl/evp.h>
-
typedef struct
{
u32 spi;
}) ip4_and_esp_header_t;
/* *INDENT-ON* */
+/* *INDENT-OFF* */
+typedef CLIB_PACKED (struct {
+ ip4_header_t ip4;
+ udp_header_t udp;
+ esp_header_t esp;
+}) ip4_and_udp_and_esp_header_t;
+/* *INDENT-ON* */
+
/* *INDENT-OFF* */
typedef CLIB_PACKED (struct {
ip6_header_t ip6;
}) ip6_and_esp_header_t;
/* *INDENT-ON* */
-typedef struct
-{
- const EVP_CIPHER *type;
-} ipsec_proto_main_crypto_alg_t;
-
-typedef struct
-{
- const EVP_MD *md;
- u8 trunc_size;
-} ipsec_proto_main_integ_alg_t;
-
-typedef struct
-{
- CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
-#if OPENSSL_VERSION_NUMBER >= 0x10100000L
- EVP_CIPHER_CTX *encrypt_ctx;
-#else
- EVP_CIPHER_CTX encrypt_ctx;
-#endif
- CLIB_CACHE_LINE_ALIGN_MARK (cacheline1);
-#if OPENSSL_VERSION_NUMBER >= 0x10100000L
- EVP_CIPHER_CTX *decrypt_ctx;
-#else
- EVP_CIPHER_CTX decrypt_ctx;
-#endif
- CLIB_CACHE_LINE_ALIGN_MARK (cacheline2);
-#if OPENSSL_VERSION_NUMBER >= 0x10100000L
- HMAC_CTX *hmac_ctx;
-#else
- HMAC_CTX hmac_ctx;
-#endif
- ipsec_crypto_alg_t last_encrypt_alg;
- ipsec_crypto_alg_t last_decrypt_alg;
- ipsec_integ_alg_t last_integ_alg;
-} ipsec_proto_main_per_thread_data_t;
-
-typedef struct
-{
- ipsec_proto_main_crypto_alg_t *ipsec_proto_main_crypto_algs;
- ipsec_proto_main_integ_alg_t *ipsec_proto_main_integ_algs;
- ipsec_proto_main_per_thread_data_t *per_thread_data;
-} ipsec_proto_main_t;
-
-extern ipsec_proto_main_t ipsec_proto_main;
-
#define ESP_WINDOW_SIZE (64)
#define ESP_SEQ_MAX (4294967295UL)
return 0;
}
-always_inline void
-ipsec_proto_init ()
-{
- ipsec_proto_main_t *em = &ipsec_proto_main;
- vlib_thread_main_t *tm = vlib_get_thread_main ();
-
- memset (em, 0, sizeof (em[0]));
-
- vec_validate (em->ipsec_proto_main_crypto_algs, IPSEC_CRYPTO_N_ALG - 1);
- em->ipsec_proto_main_crypto_algs[IPSEC_CRYPTO_ALG_AES_CBC_128].type =
- EVP_aes_128_cbc ();
- em->ipsec_proto_main_crypto_algs[IPSEC_CRYPTO_ALG_AES_CBC_192].type =
- EVP_aes_192_cbc ();
- em->ipsec_proto_main_crypto_algs[IPSEC_CRYPTO_ALG_AES_CBC_256].type =
- EVP_aes_256_cbc ();
-
- vec_validate (em->ipsec_proto_main_integ_algs, IPSEC_INTEG_N_ALG - 1);
- ipsec_proto_main_integ_alg_t *i;
-
- i = &em->ipsec_proto_main_integ_algs[IPSEC_INTEG_ALG_SHA1_96];
- i->md = EVP_sha1 ();
- i->trunc_size = 12;
-
- i = &em->ipsec_proto_main_integ_algs[IPSEC_INTEG_ALG_SHA_256_96];
- i->md = EVP_sha256 ();
- i->trunc_size = 12;
-
- i = &em->ipsec_proto_main_integ_algs[IPSEC_INTEG_ALG_SHA_256_128];
- i->md = EVP_sha256 ();
- i->trunc_size = 16;
-
- i = &em->ipsec_proto_main_integ_algs[IPSEC_INTEG_ALG_SHA_384_192];
- i->md = EVP_sha384 ();
- i->trunc_size = 24;
-
- i = &em->ipsec_proto_main_integ_algs[IPSEC_INTEG_ALG_SHA_512_256];
- i->md = EVP_sha512 ();
- i->trunc_size = 32;
-
- vec_validate_aligned (em->per_thread_data, tm->n_vlib_mains - 1,
- CLIB_CACHE_LINE_BYTES);
- int thread_id;
-
- for (thread_id = 0; thread_id < tm->n_vlib_mains - 1; thread_id++)
- {
-#if OPENSSL_VERSION_NUMBER >= 0x10100000L
- em->per_thread_data[thread_id].encrypt_ctx = EVP_CIPHER_CTX_new ();
- em->per_thread_data[thread_id].decrypt_ctx = EVP_CIPHER_CTX_new ();
- em->per_thread_data[thread_id].hmac_ctx = HMAC_CTX_new ();
-#else
- EVP_CIPHER_CTX_init (&(em->per_thread_data[thread_id].encrypt_ctx));
- EVP_CIPHER_CTX_init (&(em->per_thread_data[thread_id].decrypt_ctx));
- HMAC_CTX_init (&(em->per_thread_data[thread_id].hmac_ctx));
-#endif
- }
-}
always_inline unsigned int
-hmac_calc (ipsec_integ_alg_t alg,
- u8 * key,
- int key_len,
- u8 * data, int data_len, u8 * signature, u8 use_esn, u32 seq_hi)
+hmac_calc (vlib_main_t * vm, ipsec_sa_t * sa, u8 * data, int data_len,
+ u8 * signature)
{
- ipsec_proto_main_t *em = &ipsec_proto_main;
- u32 thread_index = vlib_get_thread_index ();
-#if OPENSSL_VERSION_NUMBER >= 0x10100000L
- HMAC_CTX *ctx = em->per_thread_data[thread_index].hmac_ctx;
-#else
- HMAC_CTX *ctx = &(em->per_thread_data[thread_index].hmac_ctx);
-#endif
- const EVP_MD *md = NULL;
- unsigned int len;
-
- ASSERT (alg < IPSEC_INTEG_N_ALG);
+ vnet_crypto_op_t _op, *op = &_op;
- if (PREDICT_FALSE (em->ipsec_proto_main_integ_algs[alg].md == 0))
+ if (PREDICT_FALSE (sa->integ_op_type == 0))
return 0;
- if (PREDICT_FALSE (alg != em->per_thread_data[thread_index].last_integ_alg))
- {
- md = em->ipsec_proto_main_integ_algs[alg].md;
- em->per_thread_data[thread_index].last_integ_alg = alg;
- }
-
- HMAC_Init_ex (ctx, key, key_len, md, NULL);
+ op->op = sa->integ_op_type;
+ op->key = sa->integ_key.data;
+ op->key_len = sa->integ_key.len;
+ op->src = data;
+ op->len = data_len;
+ op->dst = signature;
+ op->hmac_trunc_len = sa->integ_trunc_size;
- HMAC_Update (ctx, data, data_len);
+ if (sa->use_esn)
+ {
+ u32 seq_hi = clib_host_to_net_u32 (sa->seq_hi);
- if (PREDICT_TRUE (use_esn))
- HMAC_Update (ctx, (u8 *) & seq_hi, sizeof (seq_hi));
- HMAC_Final (ctx, signature, &len);
+ op->len += 4;
+ clib_memcpy (data + data_len, &seq_hi, 4);
+ }
- return em->ipsec_proto_main_integ_algs[alg].trunc_size;
+ vnet_crypto_process_ops (vm, op, 1);
+ return sa->integ_trunc_size;
}
#endif /* __ESP_H__ */