IPSec AH protocol enhancement in VPP native core

[vpp.git] / src / vnet / ipsec / esp.h

diff --git a/src/vnet/ipsec/esp.h b/src/vnet/ipsec/esp.h
index 799003b..82e3c96 100644 (file)
--- a/src/vnet/ipsec/esp.h
+++ b/src/vnet/ipsec/esp.h
@@ -15,6 +15,9 @@
 #ifndef __ESP_H__
 #define __ESP_H__
 
+#include <vnet/ip/ip.h>
+#include <vnet/ipsec/ipsec.h>
+
 #include <openssl/hmac.h>
 #include <openssl/rand.h>
 #include <openssl/evp.h>
@@ -49,39 +52,52 @@ typedef CLIB_PACKED (struct {
 typedef struct
 {
   const EVP_CIPHER *type;
-} esp_crypto_alg_t;
+} ipsec_proto_main_crypto_alg_t;
 
 typedef struct
 {
   const EVP_MD *md;
   u8 trunc_size;
-} esp_integ_alg_t;
+} 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;
-} esp_main_per_thread_data_t;
+} ipsec_proto_main_per_thread_data_t;
 
 typedef struct
 {
-  esp_crypto_alg_t *esp_crypto_algs;
-  esp_integ_alg_t *esp_integ_algs;
-  esp_main_per_thread_data_t *per_thread_data;
-} esp_main_t;
+  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;
 
-esp_main_t esp_main;
+extern ipsec_proto_main_t ipsec_proto_main;
 
 #define ESP_WINDOW_SIZE                (64)
 #define ESP_SEQ_MAX            (4294967295UL)
 
+u8 *format_esp_header (u8 * s, va_list * args);
 
 always_inline int
 esp_replay_check (ipsec_sa_t * sa, u32 seq)
@@ -228,38 +244,41 @@ esp_seq_advance (ipsec_sa_t * sa)
 }
 
 always_inline void
-esp_init ()
+ipsec_proto_init ()
 {
-  esp_main_t *em = &esp_main;
+  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->esp_crypto_algs, IPSEC_CRYPTO_N_ALG - 1);
-  em->esp_crypto_algs[IPSEC_CRYPTO_ALG_AES_CBC_128].type = EVP_aes_128_cbc ();
-  em->esp_crypto_algs[IPSEC_CRYPTO_ALG_AES_CBC_192].type = EVP_aes_192_cbc ();
-  em->esp_crypto_algs[IPSEC_CRYPTO_ALG_AES_CBC_256].type = EVP_aes_256_cbc ();
+  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->esp_integ_algs, IPSEC_INTEG_N_ALG - 1);
-  esp_integ_alg_t *i;
+  vec_validate (em->ipsec_proto_main_integ_algs, IPSEC_INTEG_N_ALG - 1);
+  ipsec_proto_main_integ_alg_t *i;
 
-  i = &em->esp_integ_algs[IPSEC_INTEG_ALG_SHA1_96];
+  i = &em->ipsec_proto_main_integ_algs[IPSEC_INTEG_ALG_SHA1_96];
   i->md = EVP_sha1 ();
   i->trunc_size = 12;
 
-  i = &em->esp_integ_algs[IPSEC_INTEG_ALG_SHA_256_96];
+  i = &em->ipsec_proto_main_integ_algs[IPSEC_INTEG_ALG_SHA_256_96];
   i->md = EVP_sha256 ();
   i->trunc_size = 12;
 
-  i = &em->esp_integ_algs[IPSEC_INTEG_ALG_SHA_256_128];
+  i = &em->ipsec_proto_main_integ_algs[IPSEC_INTEG_ALG_SHA_256_128];
   i->md = EVP_sha256 ();
   i->trunc_size = 16;
 
-  i = &em->esp_integ_algs[IPSEC_INTEG_ALG_SHA_384_192];
+  i = &em->ipsec_proto_main_integ_algs[IPSEC_INTEG_ALG_SHA_384_192];
   i->md = EVP_sha384 ();
   i->trunc_size = 24;
 
-  i = &em->esp_integ_algs[IPSEC_INTEG_ALG_SHA_512_256];
+  i = &em->ipsec_proto_main_integ_algs[IPSEC_INTEG_ALG_SHA_512_256];
   i->md = EVP_sha512 ();
   i->trunc_size = 32;
 
@@ -269,9 +288,15 @@ esp_init ()
 
   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
     }
 }
 
@@ -281,24 +306,28 @@ hmac_calc (ipsec_integ_alg_t alg,
           int key_len,
           u8 * data, int data_len, u8 * signature, u8 use_esn, u32 seq_hi)
 {
-  esp_main_t *em = &esp_main;
+  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);
 
-  if (PREDICT_FALSE (em->esp_integ_algs[alg].md == 0))
+  if (PREDICT_FALSE (em->ipsec_proto_main_integ_algs[alg].md == 0))
     return 0;
 
   if (PREDICT_FALSE (alg != em->per_thread_data[thread_index].last_integ_alg))
     {
-      md = em->esp_integ_algs[alg].md;
+      md = em->ipsec_proto_main_integ_algs[alg].md;
       em->per_thread_data[thread_index].last_integ_alg = alg;
     }
 
-  HMAC_Init (ctx, key, key_len, md);
+  HMAC_Init_ex (ctx, key, key_len, md, NULL);
 
   HMAC_Update (ctx, data, data_len);
 
@@ -306,7 +335,7 @@ hmac_calc (ipsec_integ_alg_t alg,
     HMAC_Update (ctx, (u8 *) & seq_hi, sizeof (seq_hi));
   HMAC_Final (ctx, signature, &len);
 
-  return em->esp_integ_algs[alg].trunc_size;
+  return em->ipsec_proto_main_integ_algs[alg].trunc_size;
 }
 
 #endif /* __ESP_H__ */