ipsec: compress ipsec_sa_t so data used by dataplane code fits in cacheline

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

diff --git a/src/vnet/ipsec/esp.h b/src/vnet/ipsec/esp.h
index 8e61d9d..1f894ab 100644 (file)
--- a/src/vnet/ipsec/esp.h
+++ b/src/vnet/ipsec/esp.h
@@ -55,7 +55,9 @@ typedef CLIB_PACKED (struct {
 /* *INDENT-ON* */
 
 #define ESP_WINDOW_SIZE                (64)
-#define ESP_SEQ_MAX            (4294967295UL)
+#define ESP_SEQ_MAX            (4294967295UL)
+#define ESP_MAX_BLOCK_SIZE     (16)
+#define ESP_MAX_ICV_SIZE       (16)
 
 u8 *format_esp_header (u8 * s, va_list * args);
 
@@ -182,12 +184,12 @@ esp_replay_advance_esn (ipsec_sa_t * sa, u32 seq)
 always_inline int
 esp_seq_advance (ipsec_sa_t * sa)
 {
-  if (PREDICT_TRUE (sa->use_esn))
+  if (PREDICT_TRUE (ipsec_sa_is_set_USE_EXTENDED_SEQ_NUM (sa)))
     {
       if (PREDICT_FALSE (sa->seq == ESP_SEQ_MAX))
        {
-         if (PREDICT_FALSE
-             (sa->use_anti_replay && sa->seq_hi == ESP_SEQ_MAX))
+         if (PREDICT_FALSE (ipsec_sa_is_set_USE_ANTI_REPLAY (sa) &&
+                            sa->seq_hi == ESP_SEQ_MAX))
            return 1;
          sa->seq_hi++;
        }
@@ -195,7 +197,8 @@ esp_seq_advance (ipsec_sa_t * sa)
     }
   else
     {
-      if (PREDICT_FALSE (sa->use_anti_replay && sa->seq == ESP_SEQ_MAX))
+      if (PREDICT_FALSE (ipsec_sa_is_set_USE_ANTI_REPLAY (sa) &&
+                        sa->seq == ESP_SEQ_MAX))
        return 1;
       sa->seq++;
     }
@@ -220,17 +223,15 @@ hmac_calc (vlib_main_t * vm, ipsec_sa_t * sa, u8 * data, int data_len,
   op->len = data_len;
   op->dst = signature;
   op->hmac_trunc_len = sa->integ_trunc_size;
-#if 0
 
-  HMAC_Init_ex (ctx, key, key_len, md, NULL);
-
-  HMAC_Update (ctx, data, data_len);
+  if (ipsec_sa_is_set_USE_EXTENDED_SEQ_NUM (sa))
+    {
+      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);
+    }
 
-#endif
   vnet_crypto_process_ops (vm, op, 1);
   return sa->integ_trunc_size;
 }