ip: add support for buffer offload metadata in ip midchain

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

diff --git a/src/vnet/ipsec/esp.h b/src/vnet/ipsec/esp.h
index 8d7e056..1c3ce77 100644 (file)
--- a/src/vnet/ipsec/esp.h
+++ b/src/vnet/ipsec/esp.h
@@ -18,6 +18,7 @@
 #include <vnet/ip/ip.h>
 #include <vnet/crypto/crypto.h>
 #include <vnet/ipsec/ipsec.h>
+#include <vnet/ipsec/ipsec.api_enum.h>
 
 typedef struct
 {
@@ -36,27 +37,21 @@ typedef struct
   u8 next_header;
 } esp_footer_t;
 
-/* *INDENT-OFF* */
 typedef CLIB_PACKED (struct {
   ip4_header_t ip4;
   esp_header_t esp;
 }) 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;
   esp_header_t esp;
 }) ip6_and_esp_header_t;
-/* *INDENT-ON* */
 
 /**
  * AES counter mode nonce
@@ -85,9 +80,6 @@ typedef struct esp_aead_t_
 } __clib_packed esp_aead_t;
 
 #define ESP_SEQ_MAX            (4294967295UL)
-#define ESP_MAX_BLOCK_SIZE     (16)
-#define ESP_MAX_IV_SIZE                (16)
-#define ESP_MAX_ICV_SIZE       (32)
 
 u8 *format_esp_header (u8 * s, va_list * args);
 
@@ -141,38 +133,76 @@ esp_aad_fill (u8 *data, const esp_header_t *esp, const ipsec_sa_t *sa,
     }
 }
 
-/* Special case to drop or hand off packets for sync/async modes.
- *
- * Different than sync mode, async mode only enqueue drop or hand-off packets
- * to next nodes.
- */
-always_inline void
-esp_set_next_index (vlib_buffer_t *b, vlib_node_runtime_t *node, u32 err,
-                   u16 index, u16 *nexts, u16 drop_next)
+always_inline u32
+esp_encrypt_err_to_sa_err (u32 err)
 {
-  nexts[index] = drop_next;
-  b->error = node->errors[err];
+  switch (err)
+    {
+    case ESP_ENCRYPT_ERROR_HANDOFF:
+      return IPSEC_SA_ERROR_HANDOFF;
+    case ESP_ENCRYPT_ERROR_SEQ_CYCLED:
+      return IPSEC_SA_ERROR_SEQ_CYCLED;
+    case ESP_ENCRYPT_ERROR_CRYPTO_ENGINE_ERROR:
+      return IPSEC_SA_ERROR_CRYPTO_ENGINE_ERROR;
+    case ESP_ENCRYPT_ERROR_CRYPTO_QUEUE_FULL:
+      return IPSEC_SA_ERROR_CRYPTO_QUEUE_FULL;
+    case ESP_ENCRYPT_ERROR_NO_BUFFERS:
+      return IPSEC_SA_ERROR_NO_BUFFERS;
+    case ESP_ENCRYPT_ERROR_NO_ENCRYPTION:
+      return IPSEC_SA_ERROR_NO_ENCRYPTION;
+    }
+  return ~0;
 }
 
-/* when submitting a frame is failed, drop all buffers in the frame */
 always_inline u32
-esp_async_recycle_failed_submit (vlib_main_t *vm, vnet_crypto_async_frame_t *f,
-                                vlib_node_runtime_t *node, u32 err, u16 index,
-                                u32 *from, u16 *nexts, u16 drop_next_index)
+esp_decrypt_err_to_sa_err (u32 err)
 {
-  u32 n_drop = f->n_elts;
-  u32 *bi = f->buffer_indices;
-
-  while (n_drop--)
+  switch (err)
     {
-      from[index] = bi[0];
-      esp_set_next_index (vlib_get_buffer (vm, bi[0]), node, err, index, nexts,
-                         drop_next_index);
-      bi++;
-      index++;
+    case ESP_DECRYPT_ERROR_HANDOFF:
+      return IPSEC_SA_ERROR_HANDOFF;
+    case ESP_DECRYPT_ERROR_DECRYPTION_FAILED:
+      return IPSEC_SA_ERROR_DECRYPTION_FAILED;
+    case ESP_DECRYPT_ERROR_INTEG_ERROR:
+      return IPSEC_SA_ERROR_INTEG_ERROR;
+    case ESP_DECRYPT_ERROR_CRYPTO_ENGINE_ERROR:
+      return IPSEC_SA_ERROR_CRYPTO_ENGINE_ERROR;
+    case ESP_DECRYPT_ERROR_REPLAY:
+      return IPSEC_SA_ERROR_REPLAY;
+    case ESP_DECRYPT_ERROR_RUNT:
+      return IPSEC_SA_ERROR_RUNT;
+    case ESP_DECRYPT_ERROR_NO_BUFFERS:
+      return IPSEC_SA_ERROR_NO_BUFFERS;
+    case ESP_DECRYPT_ERROR_OVERSIZED_HEADER:
+      return IPSEC_SA_ERROR_OVERSIZED_HEADER;
+    case ESP_DECRYPT_ERROR_NO_TAIL_SPACE:
+      return IPSEC_SA_ERROR_NO_TAIL_SPACE;
+    case ESP_DECRYPT_ERROR_TUN_NO_PROTO:
+      return IPSEC_SA_ERROR_TUN_NO_PROTO;
+    case ESP_DECRYPT_ERROR_UNSUP_PAYLOAD:
+      return IPSEC_SA_ERROR_UNSUP_PAYLOAD;
     }
+  return ~0;
+}
 
-  return (f->n_elts);
+always_inline void
+esp_encrypt_set_next_index (vlib_buffer_t *b, vlib_node_runtime_t *node,
+                           u32 thread_index, u32 err, u16 index, u16 *nexts,
+                           u16 drop_next, u32 sa_index)
+{
+  ipsec_set_next_index (b, node, thread_index, err,
+                       esp_encrypt_err_to_sa_err (err), index, nexts,
+                       drop_next, sa_index);
+}
+
+always_inline void
+esp_decrypt_set_next_index (vlib_buffer_t *b, vlib_node_runtime_t *node,
+                           u32 thread_index, u32 err, u16 index, u16 *nexts,
+                           u16 drop_next, u32 sa_index)
+{
+  ipsec_set_next_index (b, node, thread_index, err,
+                       esp_decrypt_err_to_sa_err (err), index, nexts,
+                       drop_next, sa_index);
 }
 
 /**
@@ -249,6 +279,43 @@ typedef struct
 extern esp_async_post_next_t esp_encrypt_async_next;
 extern esp_async_post_next_t esp_decrypt_async_next;
 
+/* when submitting a frame is failed, drop all buffers in the frame */
+always_inline u32
+esp_async_recycle_failed_submit (vlib_main_t *vm, vnet_crypto_async_frame_t *f,
+                                vlib_node_runtime_t *node, u32 err,
+                                u32 ipsec_sa_err, u16 index, u32 *from,
+                                u16 *nexts, u16 drop_next_index,
+                                bool is_encrypt)
+{
+  vlib_buffer_t *b;
+  u32 n_drop = f->n_elts;
+  u32 *bi = f->buffer_indices;
+
+  while (n_drop--)
+    {
+      u32 sa_index;
+
+      from[index] = bi[0];
+      b = vlib_get_buffer (vm, bi[0]);
+
+      if (is_encrypt)
+       {
+         sa_index = vnet_buffer (b)->ipsec.sad_index;
+       }
+      else
+       {
+         sa_index = esp_post_data (b)->decrypt_data.sa_index;
+       }
+
+      ipsec_set_next_index (b, node, vm->thread_index, err, ipsec_sa_err,
+                           index, nexts, drop_next_index, sa_index);
+      bi++;
+      index++;
+    }
+
+  return (f->n_elts);
+}
+
 #endif /* __ESP_H__ */
 
 /*