crypto: add chained buffer support in ipsecmb (AES-GCM)
[vpp.git] / src / plugins / crypto_ipsecmb / ipsecmb.c
index 7a80b39..11e5232 100644 (file)
@@ -261,101 +261,142 @@ ipsecmb_ops_cbc_cipher_dec_##a (vlib_main_t * vm,                            \
 foreach_ipsecmb_cbc_cipher_op;
 #undef _
 
-always_inline void
-ipsecmb_retire_gcm_cipher_job (JOB_AES_HMAC * job,
-                              u32 * n_fail, JOB_CIPHER_DIRECTION direction)
-{
-  vnet_crypto_op_t *op = job->user_data;
-
-  if (STS_COMPLETED != job->status)
-    {
-      op->status = VNET_CRYPTO_OP_STATUS_FAIL_BAD_HMAC;
-      *n_fail = *n_fail + 1;
-      return;
-    }
-  else
-    op->status = VNET_CRYPTO_OP_STATUS_COMPLETED;
-
-  if (DECRYPT == direction)
-    {
-      if ((memcmp (op->tag, job->auth_tag_output, op->tag_len)))
-       {
-         *n_fail = *n_fail + 1;
-         op->status = VNET_CRYPTO_OP_STATUS_FAIL_BAD_HMAC;
-       }
-    }
-}
-
-static_always_inline u32
-ipsecmb_ops_gcm_cipher_inline (vlib_main_t * vm, vnet_crypto_op_t * ops[],
-                              u32 n_ops, u32 key_len,
-                              JOB_CIPHER_DIRECTION direction)
-{
-  ipsecmb_main_t *imbm = &ipsecmb_main;
-  ipsecmb_per_thread_data_t *ptd = vec_elt_at_index (imbm->per_thread_data,
-                                                    vm->thread_index);
-  JOB_AES_HMAC *job;
-  u32 i, n_fail = 0;
-  u8 scratch[n_ops][64];
-
-  /*
-   * queue all the jobs first ...
-   */
-  for (i = 0; i < n_ops; i++)
-    {
-      struct gcm_key_data *kd;
-      vnet_crypto_op_t *op = ops[i];
-      kd = (struct gcm_key_data *) imbm->key_data[op->key_index];
-
-      job = IMB_GET_NEXT_JOB (ptd->mgr);
-
-      job->src = op->src;
-      job->dst = op->dst;
-      job->msg_len_to_cipher_in_bytes = op->len;
-      job->cipher_start_src_offset_in_bytes = 0;
-
-      job->hash_alg = AES_GMAC;
-      job->cipher_mode = GCM;
-      job->cipher_direction = direction;
-      job->chain_order = (direction == ENCRYPT ? CIPHER_HASH : HASH_CIPHER);
-
-      job->iv = op->iv;
-      job->aes_key_len_in_bytes = key_len / 8;
-      job->aes_enc_key_expanded = kd;
-      job->aes_dec_key_expanded = kd;
-      job->iv_len_in_bytes = 12;
-
-      job->u.GCM.aad = op->aad;
-      job->u.GCM.aad_len_in_bytes = op->aad_len;
-      job->auth_tag_output_len_in_bytes = op->tag_len;
-      if (DECRYPT == direction)
-       job->auth_tag_output = scratch[i];
-      else
-       job->auth_tag_output = op->tag;
-      job->user_data = op;
-
-      job = IMB_SUBMIT_JOB (ptd->mgr);
-
-      if (job)
-       ipsecmb_retire_gcm_cipher_job (job, &n_fail, direction);
-    }
-
-  while ((job = IMB_FLUSH_JOB (ptd->mgr)))
-    ipsecmb_retire_gcm_cipher_job (job, &n_fail, direction);
-
-  return n_ops - n_fail;
-}
-
 #define _(a, b)                                                              \
 static_always_inline u32                                                     \
+ipsecmb_ops_gcm_cipher_enc_##a##_chained (vlib_main_t * vm,                  \
+    vnet_crypto_op_t * ops[], vnet_crypto_op_chunk_t *chunks, u32 n_ops)     \
+{                                                                            \
+  ipsecmb_main_t *imbm = &ipsecmb_main;                                      \
+  ipsecmb_per_thread_data_t *ptd = vec_elt_at_index (imbm->per_thread_data,  \
+                                                     vm->thread_index);      \
+  MB_MGR *m = ptd->mgr;                                                      \
+  vnet_crypto_op_chunk_t *chp;                                               \
+  u32 i, j;                                                                  \
+                                                                             \
+  for (i = 0; i < n_ops; i++)                                                \
+    {                                                                        \
+      struct gcm_key_data *kd;                                               \
+      struct gcm_context_data ctx;                                           \
+      vnet_crypto_op_t *op = ops[i];                                         \
+                                                                             \
+      kd = (struct gcm_key_data *) imbm->key_data[op->key_index];            \
+      ASSERT (op->flags & VNET_CRYPTO_OP_FLAG_CHAINED_BUFFERS);              \
+      IMB_AES##b##_GCM_INIT(m, kd, &ctx, op->iv, op->aad, op->aad_len);      \
+      chp = chunks + op->chunk_index;                                        \
+      for (j = 0; j < op->n_chunks; j++)                                     \
+        {                                                                    \
+          IMB_AES##b##_GCM_ENC_UPDATE (m, kd, &ctx, chp->dst, chp->src,      \
+                                       chp->len);                            \
+          chp += 1;                                                          \
+        }                                                                    \
+      IMB_AES##b##_GCM_ENC_FINALIZE(m, kd, &ctx, op->tag, op->tag_len);      \
+                                                                             \
+      op->status = VNET_CRYPTO_OP_STATUS_COMPLETED;                          \
+    }                                                                        \
+                                                                             \
+  return n_ops;                                                              \
+}                                                                            \
+                                                                             \
+static_always_inline u32                                                     \
 ipsecmb_ops_gcm_cipher_enc_##a (vlib_main_t * vm, vnet_crypto_op_t * ops[],  \
                                 u32 n_ops)                                   \
-{ return ipsecmb_ops_gcm_cipher_inline (vm, ops, n_ops, b, ENCRYPT); }       \
+{                                                                            \
+  ipsecmb_main_t *imbm = &ipsecmb_main;                                      \
+  ipsecmb_per_thread_data_t *ptd = vec_elt_at_index (imbm->per_thread_data,  \
+                                                     vm->thread_index);      \
+  MB_MGR *m = ptd->mgr;                                                      \
+  u32 i;                                                                     \
+                                                                             \
+  for (i = 0; i < n_ops; i++)                                                \
+    {                                                                        \
+      struct gcm_key_data *kd;                                               \
+      struct gcm_context_data ctx;                                           \
+      vnet_crypto_op_t *op = ops[i];                                         \
+                                                                             \
+      kd = (struct gcm_key_data *) imbm->key_data[op->key_index];            \
+      IMB_AES##b##_GCM_ENC (m, kd, &ctx, op->dst, op->src, op->len, op->iv,  \
+                            op->aad, op->aad_len, op->tag, op->tag_len);     \
+                                                                             \
+      op->status = VNET_CRYPTO_OP_STATUS_COMPLETED;                          \
+    }                                                                        \
+                                                                             \
+  return n_ops;                                                              \
+}                                                                            \
+                                                                             \
+static_always_inline u32                                                     \
+ipsecmb_ops_gcm_cipher_dec_##a##_chained (vlib_main_t * vm,                  \
+    vnet_crypto_op_t * ops[], vnet_crypto_op_chunk_t *chunks, u32 n_ops)     \
+{                                                                            \
+  ipsecmb_main_t *imbm = &ipsecmb_main;                                      \
+  ipsecmb_per_thread_data_t *ptd = vec_elt_at_index (imbm->per_thread_data,  \
+                                                     vm->thread_index);      \
+  MB_MGR *m = ptd->mgr;                                                      \
+  vnet_crypto_op_chunk_t *chp;                                               \
+  u32 i, j, n_failed = 0;                                                    \
+                                                                             \
+  for (i = 0; i < n_ops; i++)                                                \
+    {                                                                        \
+      struct gcm_key_data *kd;                                               \
+      struct gcm_context_data ctx;                                           \
+      vnet_crypto_op_t *op = ops[i];                                         \
+      u8 scratch[64];                                                        \
+                                                                             \
+      kd = (struct gcm_key_data *) imbm->key_data[op->key_index];            \
+      ASSERT (op->flags & VNET_CRYPTO_OP_FLAG_CHAINED_BUFFERS);              \
+      IMB_AES##b##_GCM_INIT(m, kd, &ctx, op->iv, op->aad, op->aad_len);      \
+      chp = chunks + op->chunk_index;                                        \
+      for (j = 0; j < op->n_chunks; j++)                                     \
+        {                                                                    \
+          IMB_AES##b##_GCM_DEC_UPDATE (m, kd, &ctx, chp->dst, chp->src,      \
+                                       chp->len);                            \
+          chp += 1;                                                          \
+        }                                                                    \
+      IMB_AES##b##_GCM_DEC_FINALIZE(m, kd, &ctx, scratch, op->tag_len);      \
+                                                                             \
+      if ((memcmp (op->tag, scratch, op->tag_len)))                          \
+        {                                                                    \
+          op->status = VNET_CRYPTO_OP_STATUS_FAIL_BAD_HMAC;                  \
+          n_failed++;                                                        \
+        }                                                                    \
+      else                                                                   \
+        op->status = VNET_CRYPTO_OP_STATUS_COMPLETED;                        \
+    }                                                                        \
+                                                                             \
+  return n_ops - n_failed;                                                   \
+}                                                                            \
                                                                              \
 static_always_inline u32                                                     \
 ipsecmb_ops_gcm_cipher_dec_##a (vlib_main_t * vm, vnet_crypto_op_t * ops[],  \
-                                u32 n_ops)                                   \
-{ return ipsecmb_ops_gcm_cipher_inline (vm, ops, n_ops, b, DECRYPT); }       \
+                                 u32 n_ops)                                  \
+{                                                                            \
+  ipsecmb_main_t *imbm = &ipsecmb_main;                                      \
+  ipsecmb_per_thread_data_t *ptd = vec_elt_at_index (imbm->per_thread_data,  \
+                                                     vm->thread_index);      \
+  MB_MGR *m = ptd->mgr;                                                      \
+  u32 i, n_failed = 0;                                                       \
+                                                                             \
+  for (i = 0; i < n_ops; i++)                                                \
+    {                                                                        \
+      struct gcm_key_data *kd;                                               \
+      struct gcm_context_data ctx;                                           \
+      vnet_crypto_op_t *op = ops[i];                                         \
+      u8 scratch[64];                                                        \
+                                                                             \
+      kd = (struct gcm_key_data *) imbm->key_data[op->key_index];            \
+      IMB_AES##b##_GCM_DEC (m, kd, &ctx, op->dst, op->src, op->len, op->iv,  \
+                            op->aad, op->aad_len, scratch, op->tag_len);     \
+                                                                             \
+      if ((memcmp (op->tag, scratch, op->tag_len)))                          \
+        {                                                                    \
+          op->status = VNET_CRYPTO_OP_STATUS_FAIL_BAD_HMAC;                  \
+          n_failed++;                                                        \
+        }                                                                    \
+      else                                                                   \
+        op->status = VNET_CRYPTO_OP_STATUS_COMPLETED;                        \
+    }                                                                        \
+                                                                             \
+  return n_ops - n_failed;                                                   \
+}
 
 foreach_ipsecmb_gcm_cipher_op;
 #undef _
@@ -402,9 +443,7 @@ crypto_ipsecmb_key_handler (vlib_main_t * vm, vnet_crypto_key_op_t kop,
       if (imbm->key_data[idx] == 0)
        return;
 
-      clib_memset_u8 (imbm->key_data[idx], 0,
-                     clib_mem_size (imbm->key_data[idx]));
-      clib_mem_free (imbm->key_data[idx]);
+      clib_mem_free_s (imbm->key_data[idx]);
       imbm->key_data[idx] = 0;
       return;
     }
@@ -416,9 +455,7 @@ crypto_ipsecmb_key_handler (vlib_main_t * vm, vnet_crypto_key_op_t kop,
 
   if (kop == VNET_CRYPTO_KEY_OP_MODIFY && imbm->key_data[idx])
     {
-      clib_memset_u8 (imbm->key_data[idx], 0,
-                     clib_mem_size (imbm->key_data[idx]));
-      clib_mem_free (imbm->key_data[idx]);
+      clib_mem_free_s (imbm->key_data[idx]);
     }
 
   kd = imbm->key_data[idx] = clib_mem_alloc_aligned (ad->data_size,
@@ -475,8 +512,8 @@ crypto_ipsecmb_init (vlib_main_t * vm)
   u32 eidx;
   u8 *name;
 
-  if ((error = vlib_call_init_function (vm, vnet_crypto_init)))
-    return error;
+  if (!clib_cpu_supports_aes ())
+    return 0;
 
   /*
    * A priority that is better than OpenSSL but worse than VPP natvie
@@ -533,6 +570,12 @@ crypto_ipsecmb_init (vlib_main_t * vm)
                                     ipsecmb_ops_gcm_cipher_enc_##a);    \
   vnet_crypto_register_ops_handler (vm, eidx, VNET_CRYPTO_OP_##a##_DEC, \
                                     ipsecmb_ops_gcm_cipher_dec_##a);    \
+  vnet_crypto_register_chained_ops_handler                              \
+      (vm, eidx, VNET_CRYPTO_OP_##a##_ENC,                              \
+       ipsecmb_ops_gcm_cipher_enc_##a##_chained);                       \
+  vnet_crypto_register_chained_ops_handler                              \
+      (vm, eidx, VNET_CRYPTO_OP_##a##_DEC,                              \
+       ipsecmb_ops_gcm_cipher_dec_##a##_chained);                       \
   ad = imbm->alg_data + VNET_CRYPTO_ALG_##a;                            \
   ad->data_size = sizeof (struct gcm_key_data);                         \
   ad->aes_gcm_pre = m->gcm##b##_pre;                                    \
@@ -544,7 +587,12 @@ crypto_ipsecmb_init (vlib_main_t * vm)
   return (NULL);
 }
 
-VLIB_INIT_FUNCTION (crypto_ipsecmb_init);
+/* *INDENT-OFF* */
+VLIB_INIT_FUNCTION (crypto_ipsecmb_init) =
+{
+  .runs_after = VLIB_INITS ("vnet_crypto_init"),
+};
+/* *INDENT-ON* */
 
 /* *INDENT-OFF* */
 VLIB_PLUGIN_REGISTER () =