X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=src%2Fvnet%2Fipsec%2Fipsec_sa.c;h=515eb25d3238b4f18881742eb3e9769aa78b2d51;hb=490b92738;hp=11d6b10c4a47519764777919e30ec8ae7f08c7ec;hpb=1f50bf8fc57ebf78f9056185a342493be460a847;p=vpp.git

diff --git a/src/vnet/ipsec/ipsec_sa.c b/src/vnet/ipsec/ipsec_sa.c
index 11d6b10c4a4..515eb25d323 100644
--- a/src/vnet/ipsec/ipsec_sa.c
+++ b/src/vnet/ipsec/ipsec_sa.c
@@ -15,7 +15,7 @@
 
 #include <vnet/ipsec/ipsec.h>
 #include <vnet/ipsec/esp.h>
-#include <vnet/udp/udp.h>
+#include <vnet/udp/udp_local.h>
 #include <vnet/fib/fib_table.h>
 #include <vnet/fib/fib_entry_track.h>
 #include <vnet/ipsec/ipsec_tun.h>
@@ -99,17 +99,22 @@ ipsec_sa_set_crypto_alg (ipsec_sa_t * sa, ipsec_crypto_alg_t crypto_alg)
   ipsec_main_t *im = &ipsec_main;
   sa->crypto_alg = crypto_alg;
   sa->crypto_iv_size = im->crypto_algs[crypto_alg].iv_size;
-  sa->crypto_block_size = im->crypto_algs[crypto_alg].block_size;
-  sa->crypto_enc_op_id = im->crypto_algs[crypto_alg].enc_op_id;
-  sa->crypto_dec_op_id = im->crypto_algs[crypto_alg].dec_op_id;
+  sa->esp_block_align = clib_max (4, im->crypto_algs[crypto_alg].block_align);
+  sa->sync_op_data.crypto_enc_op_id = im->crypto_algs[crypto_alg].enc_op_id;
+  sa->sync_op_data.crypto_dec_op_id = im->crypto_algs[crypto_alg].dec_op_id;
   sa->crypto_calg = im->crypto_algs[crypto_alg].alg;
   ASSERT (sa->crypto_iv_size <= ESP_MAX_IV_SIZE);
-  ASSERT (sa->crypto_block_size <= ESP_MAX_BLOCK_SIZE);
+  ASSERT (sa->esp_block_align <= ESP_MAX_BLOCK_SIZE);
   if (IPSEC_CRYPTO_ALG_IS_GCM (crypto_alg))
     {
       sa->integ_icv_size = im->crypto_algs[crypto_alg].icv_size;
+      ipsec_sa_set_IS_CTR (sa);
       ipsec_sa_set_IS_AEAD (sa);
     }
+  else if (IPSEC_CRYPTO_ALG_IS_CTR (crypto_alg))
+    {
+      ipsec_sa_set_IS_CTR (sa);
+    }
 }
 
 void
@@ -118,11 +123,54 @@ ipsec_sa_set_integ_alg (ipsec_sa_t * sa, ipsec_integ_alg_t integ_alg)
   ipsec_main_t *im = &ipsec_main;
   sa->integ_alg = integ_alg;
   sa->integ_icv_size = im->integ_algs[integ_alg].icv_size;
-  sa->integ_op_id = im->integ_algs[integ_alg].op_id;
+  sa->sync_op_data.integ_op_id = im->integ_algs[integ_alg].op_id;
   sa->integ_calg = im->integ_algs[integ_alg].alg;
   ASSERT (sa->integ_icv_size <= ESP_MAX_ICV_SIZE);
 }
 
+void
+ipsec_sa_set_async_op_ids (ipsec_sa_t * sa)
+{
+  /* *INDENT-OFF* */
+  if (ipsec_sa_is_set_USE_ESN (sa))
+    {
+#define _(n, s, k) \
+  if( sa->sync_op_data.crypto_enc_op_id == VNET_CRYPTO_OP_##n##_ENC ) \
+    sa->async_op_data.crypto_async_enc_op_id = \
+      VNET_CRYPTO_OP_##n##_TAG16_AAD12_ENC; \
+  if( sa->sync_op_data.crypto_dec_op_id == VNET_CRYPTO_OP_##n##_DEC ) \
+    sa->async_op_data.crypto_async_dec_op_id = \
+      VNET_CRYPTO_OP_##n##_TAG16_AAD12_DEC;
+    foreach_crypto_aead_alg
+#undef _
+    }
+  else
+    {
+#define _(n, s, k) \
+  if( sa->sync_op_data.crypto_enc_op_id == VNET_CRYPTO_OP_##n##_ENC ) \
+    sa->async_op_data.crypto_async_enc_op_id = \
+      VNET_CRYPTO_OP_##n##_TAG16_AAD8_ENC; \
+  if( sa->sync_op_data.crypto_dec_op_id == VNET_CRYPTO_OP_##n##_DEC ) \
+    sa->async_op_data.crypto_async_dec_op_id = \
+      VNET_CRYPTO_OP_##n##_TAG16_AAD8_DEC;
+    foreach_crypto_aead_alg
+#undef _
+    }
+
+#define _(c, h, s, k ,d) \
+  if( sa->sync_op_data.crypto_enc_op_id == VNET_CRYPTO_OP_##c##_ENC && \
+      sa->sync_op_data.integ_op_id == VNET_CRYPTO_OP_##h##_HMAC) \
+    sa->async_op_data.crypto_async_enc_op_id = \
+      VNET_CRYPTO_OP_##c##_##h##_TAG##d##_ENC; \
+  if( sa->sync_op_data.crypto_dec_op_id == VNET_CRYPTO_OP_##c##_DEC && \
+      sa->sync_op_data.integ_op_id == VNET_CRYPTO_OP_##h##_HMAC) \
+    sa->async_op_data.crypto_async_dec_op_id = \
+      VNET_CRYPTO_OP_##c##_##h##_TAG##d##_DEC;
+  foreach_crypto_link_async_alg
+#undef _
+  /* *INDENT-ON* */
+}
+
 int
 ipsec_sa_add_and_lock (u32 id,
 		       u32 spi,
@@ -135,7 +183,10 @@ ipsec_sa_add_and_lock (u32 id,
 		       u32 tx_table_id,
 		       u32 salt,
 		       const ip46_address_t * tun_src,
-		       const ip46_address_t * tun_dst, u32 * sa_out_index)
+		       const ip46_address_t * tun_dst,
+		       tunnel_encap_decap_flags_t tunnel_flags,
+		       ip_dscp_t dscp,
+		       u32 * sa_out_index, u16 src_port, u16 dst_port)
 {
   vlib_main_t *vm = vlib_get_main ();
   ipsec_main_t *im = &ipsec_main;
@@ -162,10 +213,18 @@ ipsec_sa_add_and_lock (u32 id,
   sa->stat_index = sa_index;
   sa->protocol = proto;
   sa->flags = flags;
+  sa->tunnel_flags = tunnel_flags;
+  sa->dscp = dscp;
   sa->salt = salt;
-  ipsec_sa_set_integ_alg (sa, integ_alg);
-  clib_memcpy (&sa->integ_key, ik, sizeof (sa->integ_key));
+  sa->thread_index = (vlib_num_workers ()) ? ~0 : 0;
+  if (integ_alg != IPSEC_INTEG_ALG_NONE)
+    {
+      ipsec_sa_set_integ_alg (sa, integ_alg);
+      clib_memcpy (&sa->integ_key, ik, sizeof (sa->integ_key));
+    }
   ipsec_sa_set_crypto_alg (sa, crypto_alg);
+  ipsec_sa_set_async_op_ids (sa);
+
   clib_memcpy (&sa->crypto_key, ck, sizeof (sa->crypto_key));
   ip46_address_copy (&sa->tunnel_src_addr, tun_src);
   ip46_address_copy (&sa->tunnel_dst_addr, tun_dst);
@@ -179,15 +238,32 @@ ipsec_sa_add_and_lock (u32 id,
       return VNET_API_ERROR_KEY_LENGTH;
     }
 
-  sa->integ_key_index = vnet_crypto_key_add (vm,
-					     im->integ_algs[integ_alg].alg,
-					     (u8 *) ik->data, ik->len);
-  if (~0 == sa->integ_key_index)
+  if (integ_alg != IPSEC_INTEG_ALG_NONE)
     {
-      pool_put (im->sad, sa);
-      return VNET_API_ERROR_KEY_LENGTH;
+      sa->integ_key_index = vnet_crypto_key_add (vm,
+						 im->
+						 integ_algs[integ_alg].alg,
+						 (u8 *) ik->data, ik->len);
+      if (~0 == sa->integ_key_index)
+	{
+	  pool_put (im->sad, sa);
+	  return VNET_API_ERROR_KEY_LENGTH;
+	}
     }
 
+  if (sa->async_op_data.crypto_async_enc_op_id &&
+      !ipsec_sa_is_set_IS_AEAD (sa))
+    {				//AES-CBC & HMAC
+      sa->async_op_data.linked_key_index =
+	vnet_crypto_key_add_linked (vm, sa->crypto_key_index,
+				    sa->integ_key_index);
+    }
+
+  if (im->async_mode)
+    sa->crypto_op_data = sa->async_op_data.data;
+  else
+    sa->crypto_op_data = sa->sync_op_data.data;
+
   err = ipsec_check_support_cb (im, sa);
   if (err)
     {
@@ -229,6 +305,8 @@ ipsec_sa_add_and_lock (u32 id,
       if (ipsec_sa_is_set_IS_TUNNEL_V6 (sa))
 	{
 	  sa->ip6_hdr.ip_version_traffic_class_and_flow_label = 0x60;
+	  ip6_set_dscp_network_order (&sa->ip6_hdr, sa->dscp);
+
 	  sa->ip6_hdr.hop_limit = 254;
 	  sa->ip6_hdr.src_address.as_u64[0] =
 	    sa->tunnel_src_addr.ip6.as_u64[0];
@@ -249,6 +327,7 @@ ipsec_sa_add_and_lock (u32 id,
 	  sa->ip4_hdr.ttl = 254;
 	  sa->ip4_hdr.src_address.as_u32 = sa->tunnel_src_addr.ip4.as_u32;
 	  sa->ip4_hdr.dst_address.as_u32 = sa->tunnel_dst_addr.ip4.as_u32;
+	  sa->ip4_hdr.tos = sa->dscp << 2;
 
 	  if (ipsec_sa_is_set_UDP_ENCAP (sa))
 	    sa->ip4_hdr.protocol = IP_PROTOCOL_UDP;
@@ -260,8 +339,18 @@ ipsec_sa_add_and_lock (u32 id,
 
   if (ipsec_sa_is_set_UDP_ENCAP (sa))
     {
-      sa->udp_hdr.src_port = clib_host_to_net_u16 (UDP_DST_PORT_ipsec);
-      sa->udp_hdr.dst_port = clib_host_to_net_u16 (UDP_DST_PORT_ipsec);
+      if (dst_port == IPSEC_UDP_PORT_NONE)
+	sa->udp_hdr.dst_port = clib_host_to_net_u16 (UDP_DST_PORT_ipsec);
+      else
+	sa->udp_hdr.dst_port = clib_host_to_net_u16 (dst_port);
+
+      if (src_port == IPSEC_UDP_PORT_NONE)
+	sa->udp_hdr.src_port = clib_host_to_net_u16 (UDP_DST_PORT_ipsec);
+      else
+	sa->udp_hdr.src_port = clib_host_to_net_u16 (src_port);
+
+      if (ipsec_sa_is_set_IS_INBOUND (sa))
+	ipsec_register_udp_port (clib_host_to_net_u16 (sa->udp_hdr.dst_port));
     }
 
   hash_set (im->sa_index_by_sa_id, sa->id, sa_index);
@@ -285,13 +374,17 @@ ipsec_sa_del (ipsec_sa_t * sa)
   /* no recovery possible when deleting an SA */
   (void) ipsec_call_add_del_callbacks (im, sa, sa_index, 0);
 
+  if (ipsec_sa_is_set_UDP_ENCAP (sa) && ipsec_sa_is_set_IS_INBOUND (sa))
+    ipsec_unregister_udp_port (clib_net_to_host_u16 (sa->udp_hdr.dst_port));
+
   if (ipsec_sa_is_set_IS_TUNNEL (sa) && !ipsec_sa_is_set_IS_INBOUND (sa))
     {
       fib_entry_untrack (sa->fib_entry_index, sa->sibling);
       dpo_reset (&sa->dpo);
     }
   vnet_crypto_key_del (vm, sa->crypto_key_index);
-  vnet_crypto_key_del (vm, sa->integ_key_index);
+  if (sa->integ_alg != IPSEC_INTEG_ALG_NONE)
+    vnet_crypto_key_del (vm, sa->integ_key_index);
   pool_put (im->sad, sa);
 }
 
@@ -309,6 +402,20 @@ ipsec_sa_unlock (index_t sai)
   fib_node_unlock (&sa->node);
 }
 
+void
+ipsec_sa_lock (index_t sai)
+{
+  ipsec_main_t *im = &ipsec_main;
+  ipsec_sa_t *sa;
+
+  if (INDEX_INVALID == sai)
+    return;
+
+  sa = pool_elt_at_index (im->sad, sai);
+
+  fib_node_lock (&sa->node);
+}
+
 index_t
 ipsec_sa_find_and_lock (u32 id)
 {
@@ -357,11 +464,11 @@ ipsec_sa_walk (ipsec_sa_walk_cb_t cb, void *ctx)
   ipsec_sa_t *sa;
 
   /* *INDENT-OFF* */
-  pool_foreach (sa, im->sad,
-  ({
+  pool_foreach (sa, im->sad)
+   {
     if (WALK_CONTINUE != cb(sa, ctx))
       break;
-  }));
+  }
   /* *INDENT-ON* */
 }