Reorganize source tree to use single autotools instance

Change-Id: I7b51f88292e057c6443b12224486f2d0c9f8ae23
Signed-off-by: Damjan Marion <damarion@cisco.com>

1 files changed, 581 insertions, 0 deletions

diff --git a/src/vnet/ipsec/ipsec.c b/src/vnet/ipsec/ipsec.c
new file mode 100644
index 00000000000..ee85c402e86
--- /dev/null
+++ b/src/vnet/ipsec/ipsec.c
@@ -0,0 +1,581 @@
+/*
+ * decap.c : IPSec tunnel support
+ *
+ * Copyright (c) 2015 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.
+ */
+
+#include <vnet/vnet.h>
+#include <vnet/api_errno.h>
+#include <vnet/ip/ip.h>
+#include <vnet/interface.h>
+
+#include <vnet/ipsec/ipsec.h>
+#include <vnet/ipsec/ikev2.h>
+
+#if DPDK_CRYPTO==1
+#include <vnet/devices/dpdk/ipsec/esp.h>
+#define ESP_NODE "dpdk-esp-encrypt"
+#else
+#include <vnet/ipsec/esp.h>
+#define ESP_NODE "esp-encrypt"
+#endif
+
+#if DPDK_CRYPTO==0
+/* dummy function */
+static int
+add_del_sa_sess (u32 sa_index, u8 is_add)
+{
+  return 0;
+}
+#endif
+
+u32
+ipsec_get_sa_index_by_sa_id (u32 sa_id)
+{
+  ipsec_main_t *im = &ipsec_main;
+  uword *p = hash_get (im->sa_index_by_sa_id, sa_id);
+  if (!p)
+    return ~0;
+
+  return p[0];
+}
+
+int
+ipsec_set_interface_spd (vlib_main_t * vm, u32 sw_if_index, u32 spd_id,
+			 int is_add)
+{
+  ipsec_main_t *im = &ipsec_main;
+  ip4_ipsec_config_t config;
+
+  u32 spd_index;
+  uword *p;
+
+  p = hash_get (im->spd_index_by_spd_id, spd_id);
+  if (!p)
+    return VNET_API_ERROR_SYSCALL_ERROR_1;	/* no such spd-id */
+
+  spd_index = p[0];
+
+  p = hash_get (im->spd_index_by_sw_if_index, sw_if_index);
+  if (p && is_add)
+    return VNET_API_ERROR_SYSCALL_ERROR_1;	/* spd already assigned */
+
+  if (is_add)
+    {
+      hash_set (im->spd_index_by_sw_if_index, sw_if_index, spd_index);
+    }
+  else
+    {
+      hash_unset (im->spd_index_by_sw_if_index, sw_if_index);
+    }
+
+  clib_warning ("sw_if_index %u spd_id %u spd_index %u",
+		sw_if_index, spd_id, spd_index);
+
+  /* enable IPsec on TX */
+  vnet_feature_enable_disable ("ip4-output", "ipsec-output-ip4", sw_if_index,
+			       is_add, 0, 0);
+  vnet_feature_enable_disable ("ip6-output", "ipsec-output-ip6", sw_if_index,
+			       is_add, 0, 0);
+
+  /* enable IPsec on RX */
+  vnet_feature_enable_disable ("ip4-unicast", "ipsec-input-ip4", sw_if_index,
+			       is_add, &config, sizeof (config));
+  vnet_feature_enable_disable ("ip6-unicast", "ipsec-input-ip6", sw_if_index,
+			       is_add, &config, sizeof (config));
+
+  return 0;
+}
+
+int
+ipsec_add_del_spd (vlib_main_t * vm, u32 spd_id, int is_add)
+{
+  ipsec_main_t *im = &ipsec_main;
+  ipsec_spd_t *spd = 0;
+  uword *p;
+  u32 spd_index, k, v;
+
+  p = hash_get (im->spd_index_by_spd_id, spd_id);
+  if (p && is_add)
+    return VNET_API_ERROR_INVALID_VALUE;
+  if (!p && !is_add)
+    return VNET_API_ERROR_INVALID_VALUE;
+
+  if (!is_add)			/* delete */
+    {
+      spd_index = p[0];
+      spd = pool_elt_at_index (im->spds, spd_index);
+      if (!spd)
+	return VNET_API_ERROR_INVALID_VALUE;
+      /* *INDENT-OFF* */
+      hash_foreach (k, v, im->spd_index_by_sw_if_index, ({
+        if (v == spd_index)
+          ipsec_set_interface_spd(vm, k, spd_id, 0);
+      }));
+      /* *INDENT-ON* */
+      hash_unset (im->spd_index_by_spd_id, spd_id);
+      pool_free (spd->policies);
+      vec_free (spd->ipv4_outbound_policies);
+      vec_free (spd->ipv6_outbound_policies);
+      vec_free (spd->ipv4_inbound_protect_policy_indices);
+      vec_free (spd->ipv4_inbound_policy_discard_and_bypass_indices);
+      pool_put (im->spds, spd);
+    }
+  else				/* create new SPD */
+    {
+      pool_get (im->spds, spd);
+      memset (spd, 0, sizeof (*spd));
+      spd_index = spd - im->spds;
+      spd->id = spd_id;
+      hash_set (im->spd_index_by_spd_id, spd_id, spd_index);
+    }
+  return 0;
+}
+
+static int
+ipsec_spd_entry_sort (void *a1, void *a2)
+{
+  ipsec_main_t *im = &ipsec_main;
+  u32 *id1 = a1;
+  u32 *id2 = a2;
+  ipsec_spd_t *spd;
+  ipsec_policy_t *p1, *p2;
+
+  /* *INDENT-OFF* */
+  pool_foreach (spd, im->spds, ({
+    p1 = pool_elt_at_index(spd->policies, *id1);
+    p2 = pool_elt_at_index(spd->policies, *id2);
+    if (p1 && p2)
+      return p2->priority - p1->priority;
+  }));
+  /* *INDENT-ON* */
+
+  return 0;
+}
+
+int
+ipsec_add_del_policy (vlib_main_t * vm, ipsec_policy_t * policy, int is_add)
+{
+  ipsec_main_t *im = &ipsec_main;
+  ipsec_spd_t *spd = 0;
+  ipsec_policy_t *vp;
+  uword *p;
+  u32 spd_index;
+
+  clib_warning ("policy-id %u priority %d is_outbound %u", policy->id,
+		policy->priority, policy->is_outbound);
+
+  if (policy->policy == IPSEC_POLICY_ACTION_PROTECT)
+    {
+      p = hash_get (im->sa_index_by_sa_id, policy->sa_id);
+      if (!p)
+	return VNET_API_ERROR_SYSCALL_ERROR_1;
+      policy->sa_index = p[0];
+    }
+
+  p = hash_get (im->spd_index_by_spd_id, policy->id);
+
+  if (!p)
+    return VNET_API_ERROR_SYSCALL_ERROR_1;
+
+  spd_index = p[0];
+  spd = pool_elt_at_index (im->spds, spd_index);
+  if (!spd)
+    return VNET_API_ERROR_SYSCALL_ERROR_1;
+
+  if (is_add)
+    {
+      u32 policy_index;
+
+      pool_get (spd->policies, vp);
+      clib_memcpy (vp, policy, sizeof (*vp));
+      policy_index = vp - spd->policies;
+
+      if (policy->is_outbound)
+	{
+	  if (policy->is_ipv6)
+	    {
+	      vec_add1 (spd->ipv6_outbound_policies, policy_index);
+	      clib_memcpy (vp, policy, sizeof (ipsec_policy_t));
+	      vec_sort_with_function (spd->ipv6_outbound_policies,
+				      ipsec_spd_entry_sort);
+	    }
+	  else
+	    {
+	      vec_add1 (spd->ipv4_outbound_policies, policy_index);
+	      clib_memcpy (vp, policy, sizeof (ipsec_policy_t));
+	      vec_sort_with_function (spd->ipv4_outbound_policies,
+				      ipsec_spd_entry_sort);
+	    }
+	}
+      else
+	{
+	  if (policy->is_ipv6)
+	    {
+	      if (policy->policy == IPSEC_POLICY_ACTION_PROTECT)
+		{
+		  vec_add1 (spd->ipv6_inbound_protect_policy_indices,
+			    policy_index);
+		  clib_memcpy (vp, policy, sizeof (ipsec_policy_t));
+		  vec_sort_with_function
+		    (spd->ipv6_inbound_protect_policy_indices,
+		     ipsec_spd_entry_sort);
+		}
+	      else
+		{
+		  vec_add1
+		    (spd->ipv6_inbound_policy_discard_and_bypass_indices,
+		     policy_index);
+		  clib_memcpy (vp, policy, sizeof (ipsec_policy_t));
+		  vec_sort_with_function
+		    (spd->ipv6_inbound_policy_discard_and_bypass_indices,
+		     ipsec_spd_entry_sort);
+		}
+	    }
+	  else
+	    {
+	      if (policy->policy == IPSEC_POLICY_ACTION_PROTECT)
+		{
+		  vec_add1 (spd->ipv4_inbound_protect_policy_indices,
+			    policy_index);
+		  clib_memcpy (vp, policy, sizeof (ipsec_policy_t));
+		  vec_sort_with_function
+		    (spd->ipv4_inbound_protect_policy_indices,
+		     ipsec_spd_entry_sort);
+		}
+	      else
+		{
+		  vec_add1
+		    (spd->ipv4_inbound_policy_discard_and_bypass_indices,
+		     policy_index);
+		  clib_memcpy (vp, policy, sizeof (ipsec_policy_t));
+		  vec_sort_with_function
+		    (spd->ipv4_inbound_policy_discard_and_bypass_indices,
+		     ipsec_spd_entry_sort);
+		}
+	    }
+	}
+
+    }
+  else
+    {
+      u32 i, j;
+      /* *INDENT-OFF* */
+      pool_foreach_index(i, spd->policies, ({
+        vp = pool_elt_at_index(spd->policies, i);
+        if (vp->priority != policy->priority)
+          continue;
+        if (vp->is_outbound != policy->is_outbound)
+          continue;
+        if (vp->policy != policy->policy)
+          continue;
+        if (vp->sa_id != policy->sa_id)
+          continue;
+        if (vp->protocol != policy->protocol)
+          continue;
+        if (vp->lport.start != policy->lport.start)
+          continue;
+        if (vp->lport.stop != policy->lport.stop)
+          continue;
+        if (vp->rport.start != policy->rport.start)
+          continue;
+        if (vp->rport.stop != policy->rport.stop)
+          continue;
+        if (vp->is_ipv6 != policy->is_ipv6)
+          continue;
+        if (policy->is_ipv6)
+          {
+            if (vp->laddr.start.ip6.as_u64[0] != policy->laddr.start.ip6.as_u64[0])
+              continue;
+            if (vp->laddr.start.ip6.as_u64[1] != policy->laddr.start.ip6.as_u64[1])
+              continue;
+            if (vp->laddr.stop.ip6.as_u64[0] != policy->laddr.stop.ip6.as_u64[0])
+              continue;
+            if (vp->laddr.stop.ip6.as_u64[1] != policy->laddr.stop.ip6.as_u64[1])
+              continue;
+            if (vp->raddr.start.ip6.as_u64[0] != policy->raddr.start.ip6.as_u64[0])
+              continue;
+            if (vp->raddr.start.ip6.as_u64[1] != policy->raddr.start.ip6.as_u64[1])
+              continue;
+            if (vp->raddr.stop.ip6.as_u64[0] != policy->raddr.stop.ip6.as_u64[0])
+              continue;
+           if (vp->laddr.stop.ip6.as_u64[1] != policy->laddr.stop.ip6.as_u64[1])
+              continue;
+           if (policy->is_outbound)
+             {
+               vec_foreach_index(j, spd->ipv6_outbound_policies) {
+                 if (vec_elt(spd->ipv6_outbound_policies, j) == i) {
+                   vec_del1 (spd->ipv6_outbound_policies, j);
+                   break;
+                 }
+               }
+             }
+           else
+             {
+               if (policy->policy == IPSEC_POLICY_ACTION_PROTECT)
+                 {
+                   vec_foreach_index(j, spd->ipv6_inbound_protect_policy_indices) {
+                     if (vec_elt(spd->ipv6_inbound_protect_policy_indices, j) == i) {
+                       vec_del1 (spd->ipv6_inbound_protect_policy_indices, j);
+                       break;
+                     }
+                   }
+                 }
+               else
+                 {
+                   vec_foreach_index(j, spd->ipv6_inbound_policy_discard_and_bypass_indices) {
+                     if (vec_elt(spd->ipv6_inbound_policy_discard_and_bypass_indices, j) == i) {
+                       vec_del1 (spd->ipv6_inbound_policy_discard_and_bypass_indices, j);
+                       break;
+                     }
+                   }
+                 }
+             }
+          }
+        else
+          {
+            if (vp->laddr.start.ip4.as_u32 != policy->laddr.start.ip4.as_u32)
+              continue;
+            if (vp->laddr.stop.ip4.as_u32 != policy->laddr.stop.ip4.as_u32)
+              continue;
+            if (vp->raddr.start.ip4.as_u32 != policy->raddr.start.ip4.as_u32)
+              continue;
+            if (vp->raddr.stop.ip4.as_u32 != policy->raddr.stop.ip4.as_u32)
+              continue;
+            if (policy->is_outbound)
+              {
+                vec_foreach_index(j, spd->ipv4_outbound_policies) {
+                  if (vec_elt(spd->ipv4_outbound_policies, j) == i) {
+                    vec_del1 (spd->ipv4_outbound_policies, j);
+                    break;
+                  }
+                }
+              }
+            else
+              {
+                if (policy->policy == IPSEC_POLICY_ACTION_PROTECT)
+                  {
+                    vec_foreach_index(j, spd->ipv4_inbound_protect_policy_indices) {
+                      if (vec_elt(spd->ipv4_inbound_protect_policy_indices, j) == i) {
+                        vec_del1 (spd->ipv4_inbound_protect_policy_indices, j);
+                        break;
+                      }
+                    }
+                  }
+                else
+                  {
+                    vec_foreach_index(j, spd->ipv4_inbound_policy_discard_and_bypass_indices) {
+                      if (vec_elt(spd->ipv4_inbound_policy_discard_and_bypass_indices, j) == i) {
+                        vec_del1 (spd->ipv4_inbound_policy_discard_and_bypass_indices, j);
+                        break;
+                    }
+                  }
+              }
+          }
+          pool_put (spd->policies, vp);
+          break;
+        }
+      }));
+      /* *INDENT-ON* */
+    }
+
+  return 0;
+}
+
+static u8
+ipsec_is_sa_used (u32 sa_index)
+{
+  ipsec_main_t *im = &ipsec_main;
+  ipsec_spd_t *spd;
+  ipsec_policy_t *p;
+  ipsec_tunnel_if_t *t;
+
+  /* *INDENT-OFF* */
+  pool_foreach(spd, im->spds, ({
+    pool_foreach(p, spd->policies, ({
+      if (p->policy == IPSEC_POLICY_ACTION_PROTECT)
+        {
+          if (p->sa_index == sa_index)
+            return 1;
+        }
+    }));
+  }));
+
+  pool_foreach(t, im->tunnel_interfaces, ({
+    if (t->input_sa_index == sa_index)
+      return 1;
+    if (t->output_sa_index == sa_index)
+      return 1;
+  }));
+  /* *INDENT-ON* */
+
+  return 0;
+}
+
+int
+ipsec_add_del_sa (vlib_main_t * vm, ipsec_sa_t * new_sa, int is_add)
+{
+  ipsec_main_t *im = &ipsec_main;
+  ipsec_sa_t *sa = 0;
+  uword *p;
+  u32 sa_index;
+
+  clib_warning ("id %u spi %u", new_sa->id, new_sa->spi);
+
+  p = hash_get (im->sa_index_by_sa_id, new_sa->id);
+  if (p && is_add)
+    return VNET_API_ERROR_SYSCALL_ERROR_1;	/* already exists */
+  if (!p && !is_add)
+    return VNET_API_ERROR_SYSCALL_ERROR_1;
+
+  if (!is_add)			/* delete */
+    {
+      sa_index = p[0];
+      sa = pool_elt_at_index (im->sad, sa_index);
+      if (ipsec_is_sa_used (sa_index))
+	{
+	  clib_warning ("sa_id %u used in policy", sa->id);
+	  return VNET_API_ERROR_SYSCALL_ERROR_1;	/* sa used in policy */
+	}
+      hash_unset (im->sa_index_by_sa_id, sa->id);
+      add_del_sa_sess (sa_index, is_add);
+      pool_put (im->sad, sa);
+    }
+  else				/* create new SA */
+    {
+      pool_get (im->sad, sa);
+      clib_memcpy (sa, new_sa, sizeof (*sa));
+      sa_index = sa - im->sad;
+      hash_set (im->sa_index_by_sa_id, sa->id, sa_index);
+      if (add_del_sa_sess (sa_index, is_add) < 0)
+	return VNET_API_ERROR_SYSCALL_ERROR_1;
+    }
+  return 0;
+}
+
+int
+ipsec_set_sa_key (vlib_main_t * vm, ipsec_sa_t * sa_update)
+{
+  ipsec_main_t *im = &ipsec_main;
+  uword *p;
+  u32 sa_index;
+  ipsec_sa_t *sa = 0;
+
+  p = hash_get (im->sa_index_by_sa_id, sa_update->id);
+  if (!p)
+    return VNET_API_ERROR_SYSCALL_ERROR_1;	/* no such sa-id */
+
+  sa_index = p[0];
+  sa = pool_elt_at_index (im->sad, sa_index);
+
+  /* new crypto key */
+  if (0 < sa_update->crypto_key_len)
+    {
+      clib_memcpy (sa->crypto_key, sa_update->crypto_key,
+		   sa_update->crypto_key_len);
+      sa->crypto_key_len = sa_update->crypto_key_len;
+    }
+
+  /* new integ key */
+  if (0 < sa_update->integ_key_len)
+    {
+      clib_memcpy (sa->integ_key, sa_update->integ_key,
+		   sa_update->integ_key_len);
+      sa->integ_key_len = sa_update->integ_key_len;
+    }
+
+  if (sa->crypto_key_len + sa->integ_key_len > 0)
+    {
+      if (add_del_sa_sess (sa_index, 0) < 0)
+	return VNET_API_ERROR_SYSCALL_ERROR_1;
+    }
+
+  return 0;
+}
+
+static void
+ipsec_rand_seed (void)
+{
+  struct
+  {
+    time_t time;
+    pid_t pid;
+    void *p;
+  } seed_data;
+
+  seed_data.time = time (NULL);
+  seed_data.pid = getpid ();
+  seed_data.p = (void *) &seed_data;
+
+  RAND_seed ((const void *) &seed_data, sizeof (seed_data));
+}
+
+static clib_error_t *
+ipsec_init (vlib_main_t * vm)
+{
+  clib_error_t *error;
+  ipsec_main_t *im = &ipsec_main;
+  vlib_thread_main_t *tm = vlib_get_thread_main ();
+  vlib_node_t *node;
+
+  ipsec_rand_seed ();
+
+  memset (im, 0, sizeof (im[0]));
+
+  im->vnet_main = vnet_get_main ();
+  im->vlib_main = vm;
+
+  im->spd_index_by_spd_id = hash_create (0, sizeof (uword));
+  im->sa_index_by_sa_id = hash_create (0, sizeof (uword));
+  im->spd_index_by_sw_if_index = hash_create (0, sizeof (uword));
+
+  vec_validate_aligned (im->empty_buffers, tm->n_vlib_mains - 1,
+			CLIB_CACHE_LINE_BYTES);
+
+  node = vlib_get_node_by_name (vm, (u8 *) "error-drop");
+  ASSERT (node);
+  im->error_drop_node_index = node->index;
+
+  node = vlib_get_node_by_name (vm, (u8 *) ESP_NODE);
+
+  ASSERT (node);
+  im->esp_encrypt_node_index = node->index;
+
+  node = vlib_get_node_by_name (vm, (u8 *) "ip4-lookup");
+  ASSERT (node);
+  im->ip4_lookup_node_index = node->index;
+
+  if ((error = vlib_call_init_function (vm, ipsec_cli_init)))
+    return error;
+
+  if ((error = vlib_call_init_function (vm, ipsec_tunnel_if_init)))
+    return error;
+
+  esp_init ();
+
+  if ((error = ikev2_init (vm)))
+    return error;
+
+  return 0;
+}
+
+VLIB_INIT_FUNCTION (ipsec_init);
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */