ipsec: ipsec-tun protect

please consult the new tunnel proposal at:
  https://wiki.fd.io/view/VPP/IPSec

Type: feature

Change-Id: I52857fc92ae068b85f59be08bdbea1bd5932e291
Signed-off-by: Neale Ranns <nranns@cisco.com>

1 files changed, 0 insertions, 394 deletions

diff --git a/src/vnet/ipsec-gre/ipsec_gre.c b/src/vnet/ipsec-gre/ipsec_gre.c
deleted file mode 100644
index cdb23dd9deb..00000000000
--- a/src/vnet/ipsec-gre/ipsec_gre.c
+++ /dev/null
@@ -1,394 +0,0 @@
-/*
- * Copyright (c) 2016 Cisco and/or its affiliates.
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at:
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-/**
- * @file
- * @brief L2-GRE over IPSec packet processing.
- *
- * Add GRE header to thr packet and send it to the esp-encrypt node.
-*/
-
-#include <vnet/vnet.h>
-#include <vnet/ipsec-gre/ipsec_gre.h>
-
-extern ipsec_gre_main_t ipsec_gre_main;
-
-#ifndef CLIB_MARCH_VARIANT
-ipsec_gre_main_t ipsec_gre_main;
-#endif /* CLIB_MARCH_VARIANT */
-
-/**
- * @brief IPv4 and GRE header union.
- *
-*/
-typedef struct
-{
-  union
-  {
-    ip4_and_gre_header_t ip4_and_gre;
-    u64 as_u64[3];
-  };
-} ip4_and_gre_union_t;
-
-/**
- * @brief Packet trace.
- *
-*/
-typedef struct
-{
-  u32 tunnel_id; /**< Tunnel-id / index in tunnel vector */
-
-  u32 length; /**< pkt length */
-
-  ip4_address_t src; /**< tunnel src IPv4 address */
-  ip4_address_t dst; /**< tunnel dst IPv4 address */
-
-  u32 sa_id; /**< tunnel IPSec SA id */
-} ipsec_gre_tx_trace_t;
-
-static u8 *
-format_ipsec_gre_tx_trace (u8 * s, va_list * args)
-{
-  CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
-  CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
-  ipsec_gre_tx_trace_t *t = va_arg (*args, ipsec_gre_tx_trace_t *);
-
-  s = format (s, "GRE: tunnel %d len %d src %U dst %U sa-id %d",
-	      t->tunnel_id, clib_net_to_host_u16 (t->length),
-	      format_ip4_address, &t->src.as_u8,
-	      format_ip4_address, &t->dst.as_u8, t->sa_id);
-  return s;
-}
-
-/**
- * @brief IPSec-GRE tunnel interface tx function.
- *
- * Add GRE header to the packet.
- *
- * @param vm vlib_main_t corresponding to the current thread.
- * @param node vlib_node_runtime_t data for this node.
- * @param frame vlib_frame_t whose contents should be dispatched.
- *
- * @par Graph mechanics: buffer metadata, next index usage
- *
- * <em>Uses:</em>
- * - <code>node->runtime_data</code>
- *     - Match tunnel by <code>rd->dev_instance</code> in IPSec-GRE tunnels
- *       pool.
- *
- * <em>Sets:</em>
- * - <code>vnet_buffer(b)->output_features.ipsec_sad_index</code>
- *     - Set IPSec Security Association for packet encryption.
- * - <code>vnet_buffer(b)->sw_if_index[VLIB_TX]</code>
- *     - Reset output sw_if_index.
- *
- * <em>Next Index:</em>
- * - Dispatches the packet to the esp-encrypt node.
-*/
-VNET_DEVICE_CLASS_TX_FN (ipsec_gre_device_class) (vlib_main_t * vm,
-						  vlib_node_runtime_t * node,
-						  vlib_frame_t * frame)
-{
-  ipsec_gre_main_t *igm = &ipsec_gre_main;
-  u32 next_index;
-  u32 *from, *to_next, n_left_from, n_left_to_next;
-  vnet_interface_output_runtime_t *rd = (void *) node->runtime_data;
-  ipsec_gre_tunnel_t *t = pool_elt_at_index (igm->tunnels, rd->dev_instance);
-
-  u16 l2_gre_protocol_ethertype = clib_net_to_host_u16 (GRE_PROTOCOL_teb);
-
-  /* Vector of buffer / pkt indices we're supposed to process */
-  from = vlib_frame_vector_args (frame);
-
-  /* Number of buffers / pkts */
-  n_left_from = frame->n_vectors;
-
-  /* Speculatively send the first buffer to the last disposition we used */
-  next_index = node->cached_next_index;
-
-  while (n_left_from > 0)
-    {
-      /* set up to enqueue to our disposition with index = next_index */
-      vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
-
-      /*
-       * As long as we have enough pkts left to process two pkts
-       * and prefetch two pkts...
-       */
-      while (n_left_from >= 4 && n_left_to_next >= 2)
-	{
-	  vlib_buffer_t *b0, *b1;
-	  ip4_header_t *ip0, *ip1;
-	  ip4_and_gre_union_t *h0, *h1;
-	  u32 bi0, next0, bi1, next1;
-	  __attribute__ ((unused)) u8 error0, error1;
-
-	  /* Prefetch the next iteration */
-	  {
-	    vlib_buffer_t *p2, *p3;
-
-	    p2 = vlib_get_buffer (vm, from[2]);
-	    p3 = vlib_get_buffer (vm, from[3]);
-
-	    vlib_prefetch_buffer_header (p2, LOAD);
-	    vlib_prefetch_buffer_header (p3, LOAD);
-
-	    /*
-	     * Prefetch packet data. We expect to overwrite
-	     * the inbound L2 header with an ip header and a
-	     * gre header. Might want to prefetch the last line
-	     * of rewrite space as well; need profile data
-	     */
-	    CLIB_PREFETCH (p2->data, CLIB_CACHE_LINE_BYTES, STORE);
-	    CLIB_PREFETCH (p3->data, CLIB_CACHE_LINE_BYTES, STORE);
-	  }
-
-	  /* Pick up the next two buffer indices */
-	  bi0 = from[0];
-	  bi1 = from[1];
-
-	  /* Speculatively enqueue them where we sent the last buffer */
-	  to_next[0] = bi0;
-	  to_next[1] = bi1;
-	  from += 2;
-	  to_next += 2;
-	  n_left_to_next -= 2;
-	  n_left_from -= 2;
-
-	  b0 = vlib_get_buffer (vm, bi0);
-	  b1 = vlib_get_buffer (vm, bi1);
-
-	  vlib_buffer_advance (b0, -sizeof (*h0));
-	  vlib_buffer_advance (b1, -sizeof (*h1));
-
-	  h0 = vlib_buffer_get_current (b0);
-	  h1 = vlib_buffer_get_current (b1);
-	  h0->as_u64[0] = 0;
-	  h0->as_u64[1] = 0;
-	  h0->as_u64[2] = 0;
-
-	  h1->as_u64[0] = 0;
-	  h1->as_u64[1] = 0;
-	  h1->as_u64[2] = 0;
-
-	  ip0 = &h0->ip4_and_gre.ip4;
-	  h0->ip4_and_gre.gre.protocol = l2_gre_protocol_ethertype;
-	  ip0->ip_version_and_header_length = 0x45;
-	  ip0->ttl = 254;
-	  ip0->protocol = IP_PROTOCOL_GRE;
-
-	  ip1 = &h1->ip4_and_gre.ip4;
-	  h1->ip4_and_gre.gre.protocol = l2_gre_protocol_ethertype;
-	  ip1->ip_version_and_header_length = 0x45;
-	  ip1->ttl = 254;
-	  ip1->protocol = IP_PROTOCOL_GRE;
-
-	  ip0->length =
-	    clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b0));
-	  ip1->length =
-	    clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b1));
-	  ip0->src_address.as_u32 = t->tunnel_src.as_u32;
-	  ip1->src_address.as_u32 = t->tunnel_src.as_u32;
-	  ip0->dst_address.as_u32 = t->tunnel_dst.as_u32;
-	  ip1->dst_address.as_u32 = t->tunnel_dst.as_u32;
-	  ip0->checksum = ip4_header_checksum (ip0);
-	  ip1->checksum = ip4_header_checksum (ip1);
-
-	  vnet_buffer (b0)->sw_if_index[VLIB_RX] =
-	    vnet_buffer (b0)->sw_if_index[VLIB_TX];
-	  vnet_buffer (b1)->sw_if_index[VLIB_RX] =
-	    vnet_buffer (b1)->sw_if_index[VLIB_TX];
-
-	  vnet_buffer (b0)->ipsec.sad_index = t->local_sa;
-	  vnet_buffer (b1)->ipsec.sad_index = t->local_sa;
-
-	  vnet_buffer (b0)->sw_if_index[VLIB_TX] = (u32) ~ 0;
-	  vnet_buffer (b1)->sw_if_index[VLIB_TX] = (u32) ~ 0;
-
-	  next0 = IPSEC_GRE_OUTPUT_NEXT_ESP_ENCRYPT;
-	  next1 = IPSEC_GRE_OUTPUT_NEXT_ESP_ENCRYPT;
-	  error0 = IPSEC_GRE_ERROR_NONE;
-	  error1 = IPSEC_GRE_ERROR_NONE;
-
-	  if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
-	    {
-	      ipsec_gre_tx_trace_t *tr = vlib_add_trace (vm, node,
-							 b0, sizeof (*tr));
-	      tr->tunnel_id = t - igm->tunnels;
-	      tr->length = ip0->length;
-	      tr->src.as_u32 = ip0->src_address.as_u32;
-	      tr->dst.as_u32 = ip0->dst_address.as_u32;
-	      tr->sa_id = t->local_sa_id;
-	    }
-
-	  if (PREDICT_FALSE (b1->flags & VLIB_BUFFER_IS_TRACED))
-	    {
-	      ipsec_gre_tx_trace_t *tr = vlib_add_trace (vm, node,
-							 b1, sizeof (*tr));
-	      tr->tunnel_id = t - igm->tunnels;
-	      tr->length = ip1->length;
-	      tr->src.as_u32 = ip1->src_address.as_u32;
-	      tr->dst.as_u32 = ip1->dst_address.as_u32;
-	      tr->sa_id = t->local_sa_id;
-	    }
-
-	  vlib_validate_buffer_enqueue_x2 (vm, node, next_index,
-					   to_next, n_left_to_next,
-					   bi0, bi1, next0, next1);
-	}
-
-      while (n_left_from > 0 && n_left_to_next > 0)
-	{
-	  vlib_buffer_t *b0;
-	  ip4_header_t *ip0;
-	  ip4_and_gre_union_t *h0;
-	  u32 bi0, next0;
-	  __attribute__ ((unused)) u8 error0;
-
-	  bi0 = to_next[0] = from[0];
-	  from += 1;
-	  n_left_from -= 1;
-	  to_next += 1;
-	  n_left_to_next -= 1;
-
-	  b0 = vlib_get_buffer (vm, bi0);
-
-	  vlib_buffer_advance (b0, -sizeof (*h0));
-
-	  h0 = vlib_buffer_get_current (b0);
-	  h0->as_u64[0] = 0;
-	  h0->as_u64[1] = 0;
-	  h0->as_u64[2] = 0;
-
-	  ip0 = &h0->ip4_and_gre.ip4;
-	  h0->ip4_and_gre.gre.protocol = l2_gre_protocol_ethertype;
-	  ip0->ip_version_and_header_length = 0x45;
-	  ip0->ttl = 254;
-	  ip0->protocol = IP_PROTOCOL_GRE;
-	  ip0->length =
-	    clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b0));
-	  ip0->src_address.as_u32 = t->tunnel_src.as_u32;
-	  ip0->dst_address.as_u32 = t->tunnel_dst.as_u32;
-	  ip0->checksum = ip4_header_checksum (ip0);
-
-	  vnet_buffer (b0)->sw_if_index[VLIB_RX] =
-	    vnet_buffer (b0)->sw_if_index[VLIB_TX];
-	  vnet_buffer (b0)->ipsec.sad_index = t->local_sa;
-	  vnet_buffer (b0)->sw_if_index[VLIB_TX] = (u32) ~ 0;
-
-	  next0 = IPSEC_GRE_OUTPUT_NEXT_ESP_ENCRYPT;
-	  error0 = IPSEC_GRE_ERROR_NONE;
-
-	  if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
-	    {
-	      ipsec_gre_tx_trace_t *tr = vlib_add_trace (vm, node,
-							 b0, sizeof (*tr));
-	      tr->tunnel_id = t - igm->tunnels;
-	      tr->length = ip0->length;
-	      tr->src.as_u32 = ip0->src_address.as_u32;
-	      tr->dst.as_u32 = ip0->dst_address.as_u32;
-	      tr->sa_id = t->local_sa_id;
-	    }
-
-	  vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
-					   to_next, n_left_to_next,
-					   bi0, next0);
-	}
-
-      vlib_put_next_frame (vm, node, next_index, n_left_to_next);
-    }
-
-  vlib_node_increment_counter (vm, ipsec_gre_input_node.index,
-			       IPSEC_GRE_ERROR_PKTS_ENCAP, frame->n_vectors);
-
-  return frame->n_vectors;
-}
-
-static clib_error_t *
-ipsec_gre_interface_admin_up_down (vnet_main_t * vnm, u32 hw_if_index,
-				   u32 flags)
-{
-  if (flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP)
-    vnet_hw_interface_set_flags (vnm, hw_if_index,
-				 VNET_HW_INTERFACE_FLAG_LINK_UP);
-  else
-    vnet_hw_interface_set_flags (vnm, hw_if_index, 0 /* down */ );
-
-  return /* no error */ 0;
-}
-
-static u8 *
-format_ipsec_gre_tunnel_name (u8 * s, va_list * args)
-{
-  u32 dev_instance = va_arg (*args, u32);
-  return format (s, "ipsec-gre%d", dev_instance);
-}
-
-static u8 *
-format_ipsec_gre_device (u8 * s, va_list * args)
-{
-  u32 dev_instance = va_arg (*args, u32);
-  CLIB_UNUSED (int verbose) = va_arg (*args, int);
-
-  s = format (s, "IPSEC-GRE tunnel: id %d\n", dev_instance);
-  return s;
-}
-
-/* *INDENT-OFF* */
-VNET_DEVICE_CLASS (ipsec_gre_device_class) = {
-  .name = "IPSec GRE tunnel device",
-  .format_device_name = format_ipsec_gre_tunnel_name,
-  .format_device = format_ipsec_gre_device,
-  .format_tx_trace = format_ipsec_gre_tx_trace,
-  .admin_up_down_function = ipsec_gre_interface_admin_up_down,
-};
-
-
-#ifndef CLIB_MARCH_VARIANT
-VNET_HW_INTERFACE_CLASS (ipsec_gre_hw_interface_class) = {
-  .name = "IPSEC-GRE",
-};
-#endif /* CLIB_MARCH_VARIANT */
-/* *INDENT-ON* */
-
-static clib_error_t *
-ipsec_gre_init (vlib_main_t * vm)
-{
-  ipsec_gre_main_t *igm = &ipsec_gre_main;
-  clib_error_t *error;
-
-  clib_memset (igm, 0, sizeof (igm[0]));
-  igm->vlib_main = vm;
-  igm->vnet_main = vnet_get_main ();
-
-  if ((error = vlib_call_init_function (vm, ip_main_init)))
-    return error;
-
-  if ((error = vlib_call_init_function (vm, ip4_lookup_init)))
-    return error;
-
-  igm->tunnel_by_key = hash_create (0, sizeof (uword));
-
-  return vlib_call_init_function (vm, ipsec_gre_input_init);
-}
-
-VLIB_INIT_FUNCTION (ipsec_gre_init);
-
-/*
-* fd.io coding-style-patch-verification: ON
-*
-* Local Variables:
-* eval: (c-set-style "gnu")
-* End:
-*/