crypto: use fixed crypto frame pool
[vpp.git] / src / vnet / ipsec / esp_decrypt.c
index 21159fb..43d292d 100644 (file)
@@ -57,35 +57,6 @@ typedef enum
     ESP_DECRYPT_POST_N_NEXT,
 } esp_decrypt_post_next_t;
 
-#define foreach_esp_decrypt_error                                             \
-  _ (RX_PKTS, "ESP pkts received")                                            \
-  _ (RX_POST_PKTS, "ESP-POST pkts received")                                  \
-  _ (HANDOFF, "hand-off")                                                     \
-  _ (DECRYPTION_FAILED, "ESP decryption failed")                              \
-  _ (INTEG_ERROR, "Integrity check failed")                                   \
-  _ (CRYPTO_ENGINE_ERROR, "crypto engine error (packet dropped)")             \
-  _ (REPLAY, "SA replayed packet")                                            \
-  _ (RUNT, "undersized packet")                                               \
-  _ (NO_BUFFERS, "no buffers (packet dropped)")                               \
-  _ (OVERSIZED_HEADER, "buffer with oversized header (dropped)")              \
-  _ (NO_TAIL_SPACE, "no enough buffer tail space (dropped)")                  \
-  _ (TUN_NO_PROTO, "no tunnel protocol")                                      \
-  _ (UNSUP_PAYLOAD, "unsupported payload")
-
-typedef enum
-{
-#define _(sym,str) ESP_DECRYPT_ERROR_##sym,
-  foreach_esp_decrypt_error
-#undef _
-    ESP_DECRYPT_N_ERROR,
-} esp_decrypt_error_t;
-
-static char *esp_decrypt_error_strings[] = {
-#define _(sym,string) string,
-  foreach_esp_decrypt_error
-#undef _
-};
-
 typedef struct
 {
   u32 seq;
@@ -96,6 +67,8 @@ typedef struct
   ipsec_integ_alg_t integ_alg;
 } esp_decrypt_trace_t;
 
+typedef vl_counter_esp_decrypt_enum_t esp_decrypt_error_t;
+
 /* The number of byres in the hisequence number */
 #define N_HI_ESN_BYTES 4
 
@@ -140,8 +113,9 @@ esp_process_ops (vlib_main_t * vm, vlib_node_runtime_t * node,
            err = e;
          else
            err = ESP_DECRYPT_ERROR_CRYPTO_ENGINE_ERROR;
-         b[bi]->error = node->errors[err];
-         nexts[bi] = ESP_DECRYPT_NEXT_DROP;
+         esp_decrypt_set_next_index (b[bi], node, vm->thread_index, err, bi,
+                                     nexts, ESP_DECRYPT_NEXT_DROP,
+                                     vnet_buffer (b[bi])->ipsec.sad_index);
          n_fail--;
        }
       op++;
@@ -172,8 +146,9 @@ esp_process_chained_ops (vlib_main_t * vm, vlib_node_runtime_t * node,
            err = e;
          else
            err = ESP_DECRYPT_ERROR_CRYPTO_ENGINE_ERROR;
-         b[bi]->error = node->errors[err];
-         nexts[bi] = ESP_DECRYPT_NEXT_DROP;
+         esp_decrypt_set_next_index (b[bi], node, vm->thread_index, err, bi,
+                                     nexts, ESP_DECRYPT_NEXT_DROP,
+                                     vnet_buffer (b[bi])->ipsec.sad_index);
          n_fail--;
        }
       op++;
@@ -551,8 +526,9 @@ esp_decrypt_prepare_sync_op (vlib_main_t * vm, vlib_node_runtime_t * node,
                                       payload, pd->current_length,
                                       &op->digest, &op->n_chunks, 0) < 0)
            {
-             b->error = node->errors[ESP_DECRYPT_ERROR_NO_BUFFERS];
-             next[0] = ESP_DECRYPT_NEXT_DROP;
+             esp_decrypt_set_next_index (
+               b, node, vm->thread_index, ESP_DECRYPT_ERROR_NO_BUFFERS, 0,
+               next, ESP_DECRYPT_NEXT_DROP, pd->sa_index);
              return;
            }
        }
@@ -627,7 +603,7 @@ esp_decrypt_prepare_async_frame (vlib_main_t *vm, vlib_node_runtime_t *node,
   esp_decrypt_packet_data_t *async_pd = &(esp_post_data (b))->decrypt_data;
   esp_decrypt_packet_data2_t *async_pd2 = esp_post_data2 (b);
   u8 *tag = payload + len, *iv = payload + esp_sz, *aad = 0;
-  u32 key_index;
+  const u32 key_index = sa0->crypto_key_index;
   u32 crypto_len, integ_len = 0;
   i16 crypto_start_offset, integ_start_offset = 0;
   u8 flags = 0;
@@ -635,7 +611,6 @@ esp_decrypt_prepare_async_frame (vlib_main_t *vm, vlib_node_runtime_t *node,
   if (!ipsec_sa_is_set_IS_AEAD (sa0))
     {
       /* linked algs */
-      key_index = sa0->linked_key_index;
       integ_start_offset = payload - b->data;
       integ_len = len;
       if (PREDICT_TRUE (sa0->integ_op_id != VNET_CRYPTO_OP_NONE))
@@ -688,8 +663,6 @@ esp_decrypt_prepare_async_frame (vlib_main_t *vm, vlib_node_runtime_t *node,
       else
        esp_insert_esn (vm, sa0, pd, pd2, &integ_len, &tag, &len, b, payload);
     }
-  else
-    key_index = sa0->crypto_key_index;
 
 out:
   /* crypto */
@@ -747,7 +720,7 @@ out:
 }
 
 static_always_inline void
-esp_decrypt_post_crypto (vlib_main_t *vm, const vlib_node_runtime_t *node,
+esp_decrypt_post_crypto (vlib_main_t *vm, vlib_node_runtime_t *node,
                         const u16 *next_by_next_header,
                         const esp_decrypt_packet_data_t *pd,
                         const esp_decrypt_packet_data2_t *pd2,
@@ -786,16 +759,17 @@ esp_decrypt_post_crypto (vlib_main_t *vm, const vlib_node_runtime_t *node,
   if (ipsec_sa_anti_replay_and_sn_advance (sa0, pd->seq, pd->seq_hi, true,
                                           NULL))
     {
-      b->error = node->errors[ESP_DECRYPT_ERROR_REPLAY];
-      next[0] = ESP_DECRYPT_NEXT_DROP;
+      esp_decrypt_set_next_index (b, node, vm->thread_index,
+                                 ESP_DECRYPT_ERROR_REPLAY, 0, next,
+                                 ESP_DECRYPT_NEXT_DROP, pd->sa_index);
       return;
     }
 
   u64 n_lost =
     ipsec_sa_anti_replay_advance (sa0, vm->thread_index, pd->seq, pd->seq_hi);
 
-  vlib_prefetch_simple_counter (&ipsec_sa_lost_counters, vm->thread_index,
-                               pd->sa_index);
+  vlib_prefetch_simple_counter (&ipsec_sa_err_counters[IPSEC_SA_ERROR_LOST],
+                               vm->thread_index, pd->sa_index);
 
   if (pd->is_chain)
     {
@@ -944,8 +918,9 @@ esp_decrypt_post_crypto (vlib_main_t *vm, const vlib_node_runtime_t *node,
              next[0] = ESP_DECRYPT_NEXT_IP6_INPUT;
              break;
            default:
-             b->error = node->errors[ESP_DECRYPT_ERROR_UNSUP_PAYLOAD];
-             next[0] = ESP_DECRYPT_NEXT_DROP;
+             esp_decrypt_set_next_index (
+               b, node, vm->thread_index, ESP_DECRYPT_ERROR_UNSUP_PAYLOAD, 0,
+               next, ESP_DECRYPT_NEXT_DROP, pd->sa_index);
              break;
            }
        }
@@ -958,8 +933,9 @@ esp_decrypt_post_crypto (vlib_main_t *vm, const vlib_node_runtime_t *node,
        }
       else
        {
-         next[0] = ESP_DECRYPT_NEXT_DROP;
-         b->error = node->errors[ESP_DECRYPT_ERROR_UNSUP_PAYLOAD];
+         esp_decrypt_set_next_index (b, node, vm->thread_index,
+                                     ESP_DECRYPT_ERROR_UNSUP_PAYLOAD, 0, next,
+                                     ESP_DECRYPT_NEXT_DROP, pd->sa_index);
          return;
        }
 
@@ -999,8 +975,10 @@ esp_decrypt_post_crypto (vlib_main_t *vm, const vlib_node_runtime_t *node,
                      !ip46_address_is_equal_v4 (&itp->itp_tun.dst,
                                                 &ip4->src_address))
                    {
-                     next[0] = ESP_DECRYPT_NEXT_DROP;
-                     b->error = node->errors[ESP_DECRYPT_ERROR_TUN_NO_PROTO];
+                     esp_decrypt_set_next_index (
+                       b, node, vm->thread_index,
+                       ESP_DECRYPT_ERROR_TUN_NO_PROTO, 0, next,
+                       ESP_DECRYPT_NEXT_DROP, pd->sa_index);
                    }
                }
              else if (next_header == IP_PROTOCOL_IPV6)
@@ -1014,8 +992,10 @@ esp_decrypt_post_crypto (vlib_main_t *vm, const vlib_node_runtime_t *node,
                      !ip46_address_is_equal_v6 (&itp->itp_tun.dst,
                                                 &ip6->src_address))
                    {
-                     next[0] = ESP_DECRYPT_NEXT_DROP;
-                     b->error = node->errors[ESP_DECRYPT_ERROR_TUN_NO_PROTO];
+                     esp_decrypt_set_next_index (
+                       b, node, vm->thread_index,
+                       ESP_DECRYPT_ERROR_TUN_NO_PROTO, 0, next,
+                       ESP_DECRYPT_NEXT_DROP, pd->sa_index);
                    }
                }
            }
@@ -1023,8 +1003,8 @@ esp_decrypt_post_crypto (vlib_main_t *vm, const vlib_node_runtime_t *node,
     }
 
   if (PREDICT_FALSE (n_lost))
-    vlib_increment_simple_counter (&ipsec_sa_lost_counters, vm->thread_index,
-                                  pd->sa_index, n_lost);
+    vlib_increment_simple_counter (&ipsec_sa_err_counters[IPSEC_SA_ERROR_LOST],
+                                  vm->thread_index, pd->sa_index, n_lost);
 }
 
 always_inline uword
@@ -1043,7 +1023,7 @@ esp_decrypt_inline (vlib_main_t *vm, vlib_node_runtime_t *node,
   vlib_buffer_t *sync_bufs[VLIB_FRAME_SIZE];
   u16 sync_nexts[VLIB_FRAME_SIZE], *sync_next = sync_nexts, n_sync = 0;
   u16 async_nexts[VLIB_FRAME_SIZE], *async_next = async_nexts;
-  u16 noop_nexts[VLIB_FRAME_SIZE], *noop_next = noop_nexts, n_noop = 0;
+  u16 noop_nexts[VLIB_FRAME_SIZE], n_noop = 0;
   u32 sync_bi[VLIB_FRAME_SIZE];
   u32 noop_bi[VLIB_FRAME_SIZE];
   esp_decrypt_packet_data_t pkt_data[VLIB_FRAME_SIZE], *pd = pkt_data;
@@ -1092,8 +1072,9 @@ esp_decrypt_inline (vlib_main_t *vm, vlib_node_runtime_t *node,
       if (n_bufs == 0)
        {
          err = ESP_DECRYPT_ERROR_NO_BUFFERS;
-         esp_set_next_index (b[0], node, err, n_noop, noop_nexts,
-                             ESP_DECRYPT_NEXT_DROP);
+         esp_decrypt_set_next_index (b[0], node, thread_index, err, n_noop,
+                                     noop_nexts, ESP_DECRYPT_NEXT_DROP,
+                                     vnet_buffer (b[0])->ipsec.sad_index);
          goto next;
        }
 
@@ -1101,12 +1082,13 @@ esp_decrypt_inline (vlib_main_t *vm, vlib_node_runtime_t *node,
        {
          if (current_sa_pkts)
            vlib_increment_combined_counter (&ipsec_sa_counters, thread_index,
-                                            current_sa_index,
-                                            current_sa_pkts,
+                                            current_sa_index, current_sa_pkts,
                                             current_sa_bytes);
          current_sa_bytes = current_sa_pkts = 0;
 
          current_sa_index = vnet_buffer (b[0])->ipsec.sad_index;
+         vlib_prefetch_combined_counter (&ipsec_sa_counters, thread_index,
+                                         current_sa_index);
          sa0 = ipsec_sa_get (current_sa_index);
 
          /* fetch the second cacheline ASAP */
@@ -1118,7 +1100,7 @@ esp_decrypt_inline (vlib_main_t *vm, vlib_node_runtime_t *node,
          is_async = im->async_mode | ipsec_sa_is_set_IS_ASYNC (sa0);
        }
 
-      if (PREDICT_FALSE (~0 == sa0->thread_index))
+      if (PREDICT_FALSE ((u16) ~0 == sa0->thread_index))
        {
          /* this is the first packet to use this SA, claim the SA
           * for this thread. this could happen simultaneously on
@@ -1131,8 +1113,9 @@ esp_decrypt_inline (vlib_main_t *vm, vlib_node_runtime_t *node,
        {
          vnet_buffer (b[0])->ipsec.thread_index = sa0->thread_index;
          err = ESP_DECRYPT_ERROR_HANDOFF;
-         esp_set_next_index (b[0], node, err, n_noop, noop_nexts,
-                             ESP_DECRYPT_NEXT_HANDOFF);
+         esp_decrypt_set_next_index (b[0], node, thread_index, err, n_noop,
+                                     noop_nexts, ESP_DECRYPT_NEXT_HANDOFF,
+                                     current_sa_index);
          goto next;
        }
 
@@ -1170,16 +1153,18 @@ esp_decrypt_inline (vlib_main_t *vm, vlib_node_runtime_t *node,
                                               &pd->seq_hi))
        {
          err = ESP_DECRYPT_ERROR_REPLAY;
-         esp_set_next_index (b[0], node, err, n_noop, noop_nexts,
-                             ESP_DECRYPT_NEXT_DROP);
+         esp_decrypt_set_next_index (b[0], node, thread_index, err, n_noop,
+                                     noop_nexts, ESP_DECRYPT_NEXT_DROP,
+                                     current_sa_index);
          goto next;
        }
 
       if (pd->current_length < cpd.icv_sz + esp_sz + cpd.iv_sz)
        {
          err = ESP_DECRYPT_ERROR_RUNT;
-         esp_set_next_index (b[0], node, err, n_noop, noop_nexts,
-                             ESP_DECRYPT_NEXT_DROP);
+         esp_decrypt_set_next_index (b[0], node, thread_index, err, n_noop,
+                                     noop_nexts, ESP_DECRYPT_NEXT_DROP,
+                                     current_sa_index);
          goto next;
        }
 
@@ -1198,6 +1183,15 @@ esp_decrypt_inline (vlib_main_t *vm, vlib_node_runtime_t *node,
            {
              async_frames[async_op] =
                vnet_crypto_async_get_frame (vm, async_op);
+             if (PREDICT_FALSE (!async_frames[async_op]))
+               {
+                 err = ESP_DECRYPT_ERROR_NO_AVAIL_FRAME;
+                 esp_decrypt_set_next_index (
+                   b[0], node, thread_index, err, n_noop, noop_nexts,
+                   ESP_DECRYPT_NEXT_DROP, current_sa_index);
+                 goto next;
+               }
+
              /* Save the frame to the list we'll submit at the end */
              vec_add1 (ptd->async_frames, async_frames[async_op]);
            }
@@ -1208,21 +1202,21 @@ esp_decrypt_inline (vlib_main_t *vm, vlib_node_runtime_t *node,
            async_next_node);
          if (ESP_DECRYPT_ERROR_RX_PKTS != err)
            {
-             esp_set_next_index (b[0], node, err, n_noop, noop_nexts,
-                                 ESP_DECRYPT_NEXT_DROP);
+             esp_decrypt_set_next_index (
+               b[0], node, thread_index, err, n_noop, noop_nexts,
+               ESP_DECRYPT_NEXT_DROP, current_sa_index);
            }
        }
       else
        esp_decrypt_prepare_sync_op (
          vm, node, ptd, &crypto_ops, &integ_ops, op, sa0, payload, len,
-         cpd.icv_sz, cpd.iv_sz, pd, pd2, b[0], sync_next, b - bufs);
+         cpd.icv_sz, cpd.iv_sz, pd, pd2, b[0], sync_next, n_sync);
       /* next */
     next:
       if (ESP_DECRYPT_ERROR_RX_PKTS != err)
        {
          noop_bi[n_noop] = from[b - bufs];
          n_noop++;
-         noop_next++;
        }
       else if (!is_async)
        {
@@ -1260,7 +1254,8 @@ esp_decrypt_inline (vlib_main_t *vm, vlib_node_runtime_t *node,
        {
          n_noop += esp_async_recycle_failed_submit (
            vm, *async_frame, node, ESP_DECRYPT_ERROR_CRYPTO_ENGINE_ERROR,
-           n_noop, noop_bi, noop_nexts, ESP_DECRYPT_NEXT_DROP);
+           IPSEC_SA_ERROR_CRYPTO_ENGINE_ERROR, n_noop, noop_bi, noop_nexts,
+           ESP_DECRYPT_NEXT_DROP, false);
          vnet_crypto_async_reset_frame (*async_frame);
          vnet_crypto_async_free_frame (vm, *async_frame);
        }
@@ -1481,8 +1476,8 @@ VLIB_REGISTER_NODE (esp4_decrypt_node) = {
   .format_trace = format_esp_decrypt_trace,
   .type = VLIB_NODE_TYPE_INTERNAL,
 
-  .n_errors = ARRAY_LEN(esp_decrypt_error_strings),
-  .error_strings = esp_decrypt_error_strings,
+  .n_errors = ESP_DECRYPT_N_ERROR,
+  .error_counters = esp_decrypt_error_counters,
 
   .n_next_nodes = ESP_DECRYPT_N_NEXT,
   .next_nodes = {
@@ -1501,8 +1496,8 @@ VLIB_REGISTER_NODE (esp4_decrypt_post_node) = {
   .format_trace = format_esp_decrypt_trace,
   .type = VLIB_NODE_TYPE_INTERNAL,
 
-  .n_errors = ARRAY_LEN(esp_decrypt_error_strings),
-  .error_strings = esp_decrypt_error_strings,
+  .n_errors = ESP_DECRYPT_N_ERROR,
+  .error_counters = esp_decrypt_error_counters,
 
   .sibling_of = "esp4-decrypt",
 };
@@ -1513,8 +1508,8 @@ VLIB_REGISTER_NODE (esp6_decrypt_node) = {
   .format_trace = format_esp_decrypt_trace,
   .type = VLIB_NODE_TYPE_INTERNAL,
 
-  .n_errors = ARRAY_LEN(esp_decrypt_error_strings),
-  .error_strings = esp_decrypt_error_strings,
+  .n_errors = ESP_DECRYPT_N_ERROR,
+  .error_counters = esp_decrypt_error_counters,
 
   .n_next_nodes = ESP_DECRYPT_N_NEXT,
   .next_nodes = {
@@ -1533,8 +1528,8 @@ VLIB_REGISTER_NODE (esp6_decrypt_post_node) = {
   .format_trace = format_esp_decrypt_trace,
   .type = VLIB_NODE_TYPE_INTERNAL,
 
-  .n_errors = ARRAY_LEN(esp_decrypt_error_strings),
-  .error_strings = esp_decrypt_error_strings,
+  .n_errors = ESP_DECRYPT_N_ERROR,
+  .error_counters = esp_decrypt_error_counters,
 
   .sibling_of = "esp6-decrypt",
 };
@@ -1544,8 +1539,8 @@ VLIB_REGISTER_NODE (esp4_decrypt_tun_node) = {
   .vector_size = sizeof (u32),
   .format_trace = format_esp_decrypt_trace,
   .type = VLIB_NODE_TYPE_INTERNAL,
-  .n_errors = ARRAY_LEN(esp_decrypt_error_strings),
-  .error_strings = esp_decrypt_error_strings,
+  .n_errors = ESP_DECRYPT_N_ERROR,
+  .error_counters = esp_decrypt_error_counters,
   .n_next_nodes = ESP_DECRYPT_N_NEXT,
   .next_nodes = {
     [ESP_DECRYPT_NEXT_DROP] = "ip4-drop",
@@ -1563,8 +1558,8 @@ VLIB_REGISTER_NODE (esp4_decrypt_tun_post_node) = {
   .format_trace = format_esp_decrypt_trace,
   .type = VLIB_NODE_TYPE_INTERNAL,
 
-  .n_errors = ARRAY_LEN(esp_decrypt_error_strings),
-  .error_strings = esp_decrypt_error_strings,
+  .n_errors = ESP_DECRYPT_N_ERROR,
+  .error_counters = esp_decrypt_error_counters,
 
   .sibling_of = "esp4-decrypt-tun",
 };
@@ -1574,8 +1569,8 @@ VLIB_REGISTER_NODE (esp6_decrypt_tun_node) = {
   .vector_size = sizeof (u32),
   .format_trace = format_esp_decrypt_trace,
   .type = VLIB_NODE_TYPE_INTERNAL,
-  .n_errors = ARRAY_LEN(esp_decrypt_error_strings),
-  .error_strings = esp_decrypt_error_strings,
+  .n_errors = ESP_DECRYPT_N_ERROR,
+  .error_counters = esp_decrypt_error_counters,
   .n_next_nodes = ESP_DECRYPT_N_NEXT,
   .next_nodes = {
     [ESP_DECRYPT_NEXT_DROP] = "ip6-drop",
@@ -1593,8 +1588,8 @@ VLIB_REGISTER_NODE (esp6_decrypt_tun_post_node) = {
   .format_trace = format_esp_decrypt_trace,
   .type = VLIB_NODE_TYPE_INTERNAL,
 
-  .n_errors = ARRAY_LEN(esp_decrypt_error_strings),
-  .error_strings = esp_decrypt_error_strings,
+  .n_errors = ESP_DECRYPT_N_ERROR,
+  .error_counters = esp_decrypt_error_counters,
 
   .sibling_of = "esp6-decrypt-tun",
 };