Reorganize source tree to use single autotools instance

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

1 files changed, 478 insertions, 0 deletions

diff --git a/src/vnet/ipsec/ipsec_output.c b/src/vnet/ipsec/ipsec_output.c
new file mode 100644
index 00000000000..97977899132
--- /dev/null
+++ b/src/vnet/ipsec/ipsec_output.c
@@ -0,0 +1,478 @@
+/*
+ * ipsec_output.c : IPSec output node
+ *
+ * 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/ipsec/ipsec.h>
+
+#if DPDK_CRYPTO==1
+#define ESP_NODE "dpdk-esp-encrypt"
+#else
+#define ESP_NODE "esp-encrypt"
+#endif
+
+#if IPSEC > 0
+
+#define foreach_ipsec_output_next                \
+_(DROP, "error-drop")                            \
+_(ESP_ENCRYPT, ESP_NODE)
+
+#define _(v, s) IPSEC_OUTPUT_NEXT_##v,
+typedef enum
+{
+  foreach_ipsec_output_next
+#undef _
+    IPSEC_OUTPUT_N_NEXT,
+} ipsec_output_next_t;
+
+
+#define foreach_ipsec_output_error                   \
+ _(RX_PKTS, "IPSec pkts received")                   \
+ _(POLICY_DISCARD, "IPSec policy discard")           \
+ _(POLICY_NO_MATCH, "IPSec policy (no match)")       \
+ _(POLICY_PROTECT, "IPSec policy protect")           \
+ _(POLICY_BYPASS, "IPSec policy bypass")             \
+ _(ENCAPS_FAILED, "IPSec encapsulation failed")
+
+
+typedef enum
+{
+#define _(sym,str) IPSEC_OUTPUT_ERROR_##sym,
+  foreach_ipsec_output_error
+#undef _
+    IPSEC_DECAP_N_ERROR,
+} ipsec_output_error_t;
+
+static char *ipsec_output_error_strings[] = {
+#define _(sym,string) string,
+  foreach_ipsec_output_error
+#undef _
+};
+
+static vlib_node_registration_t ipsec_output_ip4_node;
+static vlib_node_registration_t ipsec_output_ip6_node;
+
+typedef struct
+{
+  u32 spd_id;
+} ipsec_output_trace_t;
+
+/* packet trace format function */
+static u8 *
+format_ipsec_output_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_output_trace_t *t = va_arg (*args, ipsec_output_trace_t *);
+
+  if (t->spd_id != ~0)
+    {
+      s = format (s, "spd %u ", t->spd_id);
+    }
+  else
+    {
+      s = format (s, "no spd");
+    }
+  return s;
+}
+
+always_inline ipsec_policy_t *
+ipsec_output_policy_match (ipsec_spd_t * spd, u8 pr, u32 la, u32 ra, u16 lp,
+			   u16 rp)
+{
+  ipsec_policy_t *p;
+  u32 *i;
+
+  if (!spd)
+    return 0;
+
+  vec_foreach (i, spd->ipv4_outbound_policies)
+  {
+    p = pool_elt_at_index (spd->policies, *i);
+    if (PREDICT_FALSE (p->protocol && (p->protocol != pr)))
+      continue;
+
+    if (la < clib_net_to_host_u32 (p->laddr.start.ip4.as_u32))
+      continue;
+
+    if (la > clib_net_to_host_u32 (p->laddr.stop.ip4.as_u32))
+      continue;
+
+    if (ra < clib_net_to_host_u32 (p->raddr.start.ip4.as_u32))
+      continue;
+
+    if (ra > clib_net_to_host_u32 (p->raddr.stop.ip4.as_u32))
+      continue;
+
+    if (PREDICT_FALSE ((pr != IP_PROTOCOL_TCP) && (pr != IP_PROTOCOL_UDP)))
+      return p;
+
+    if (lp < p->lport.start)
+      continue;
+
+    if (lp > p->lport.stop)
+      continue;
+
+    if (rp < p->rport.start)
+      continue;
+
+    if (rp > p->rport.stop)
+      continue;
+
+    return p;
+  }
+  return 0;
+}
+
+always_inline uword
+ip6_addr_match_range (ip6_address_t * a, ip6_address_t * la,
+		      ip6_address_t * ua)
+{
+  if ((memcmp (a->as_u64, la->as_u64, 2 * sizeof (u64)) >= 0) &&
+      (memcmp (a->as_u64, ua->as_u64, 2 * sizeof (u64)) <= 0))
+    return 1;
+  return 0;
+}
+
+always_inline ipsec_policy_t *
+ipsec_output_ip6_policy_match (ipsec_spd_t * spd,
+			       ip6_address_t * la,
+			       ip6_address_t * ra, u16 lp, u16 rp, u8 pr)
+{
+  ipsec_policy_t *p;
+  u32 *i;
+
+  if (!spd)
+    return 0;
+
+  vec_foreach (i, spd->ipv6_outbound_policies)
+  {
+    p = pool_elt_at_index (spd->policies, *i);
+    if (PREDICT_FALSE (p->protocol && (p->protocol != pr)))
+      continue;
+
+    if (!ip6_addr_match_range (ra, &p->raddr.start.ip6, &p->raddr.stop.ip6))
+      continue;
+
+    if (!ip6_addr_match_range (la, &p->laddr.start.ip6, &p->laddr.stop.ip6))
+      continue;
+
+    if (PREDICT_FALSE ((pr != IP_PROTOCOL_TCP) && (pr != IP_PROTOCOL_UDP)))
+      return p;
+
+    if (lp < p->lport.start)
+      continue;
+
+    if (lp > p->lport.stop)
+      continue;
+
+    if (rp < p->rport.start)
+      continue;
+
+    if (rp > p->rport.stop)
+      continue;
+
+    return p;
+  }
+
+  return 0;
+}
+
+static inline uword
+ipsec_output_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
+		     vlib_frame_t * from_frame, int is_ipv6)
+{
+  ipsec_main_t *im = &ipsec_main;
+
+  u32 *from, *to_next = 0;
+  u32 n_left_from, sw_if_index0, last_sw_if_index = (u32) ~ 0;
+  u32 next_node_index = (u32) ~ 0, last_next_node_index = (u32) ~ 0;
+  vlib_frame_t *f = 0;
+  u32 spd_index0 = ~0;
+  ipsec_spd_t *spd0 = 0;
+  u64 nc_protect = 0, nc_bypass = 0, nc_discard = 0, nc_nomatch = 0;
+
+  from = vlib_frame_vector_args (from_frame);
+  n_left_from = from_frame->n_vectors;
+
+  while (n_left_from > 0)
+    {
+      u32 bi0;
+      vlib_buffer_t *b0;
+      ipsec_policy_t *p0;
+      ip4_header_t *ip0;
+      ip6_header_t *ip6_0 = 0;
+      udp_header_t *udp0;
+      u32 iph_offset = 0;
+
+      bi0 = from[0];
+      b0 = vlib_get_buffer (vm, bi0);
+      sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_TX];
+      iph_offset = vnet_buffer (b0)->ip.save_rewrite_length;
+      ip0 = (ip4_header_t *) ((u8 *) vlib_buffer_get_current (b0)
+			      + iph_offset);
+
+      /* lookup for SPD only if sw_if_index is changed */
+      if (PREDICT_FALSE (last_sw_if_index != sw_if_index0))
+	{
+	  uword *p = hash_get (im->spd_index_by_sw_if_index, sw_if_index0);
+	  ASSERT (p);
+	  spd_index0 = p[0];
+	  spd0 = pool_elt_at_index (im->spds, spd_index0);
+	  last_sw_if_index = sw_if_index0;
+	}
+
+      if (is_ipv6)
+	{
+	  ip6_0 = (ip6_header_t *) ((u8 *) vlib_buffer_get_current (b0)
+				    + iph_offset);
+
+	  udp0 = ip6_next_header (ip6_0);
+#if 0
+	  clib_warning
+	    ("packet received from %U port %u to %U port %u spd_id %u",
+	     format_ip6_address, &ip6_0->src_address,
+	     clib_net_to_host_u16 (udp0->src_port), format_ip6_address,
+	     &ip6_0->dst_address, clib_net_to_host_u16 (udp0->dst_port),
+	     spd0->id);
+#endif
+
+	  p0 = ipsec_output_ip6_policy_match (spd0,
+					      &ip6_0->src_address,
+					      &ip6_0->dst_address,
+					      clib_net_to_host_u16
+					      (udp0->src_port),
+					      clib_net_to_host_u16
+					      (udp0->dst_port),
+					      ip6_0->protocol);
+	}
+      else
+	{
+	  udp0 = (udp_header_t *) ((u8 *) ip0 + ip4_header_bytes (ip0));
+
+#if 0
+	  clib_warning ("packet received from %U to %U port %u",
+			format_ip4_address, ip0->src_address.as_u8,
+			format_ip4_address, ip0->dst_address.as_u8,
+			clib_net_to_host_u16 (udp0->dst_port));
+	  clib_warning ("sw_if_index0 %u spd_index0 %u spd_id %u",
+			sw_if_index0, spd_index0, spd0->id);
+#endif
+
+	  p0 = ipsec_output_policy_match (spd0, ip0->protocol,
+					  clib_net_to_host_u32
+					  (ip0->src_address.as_u32),
+					  clib_net_to_host_u32
+					  (ip0->dst_address.as_u32),
+					  clib_net_to_host_u16
+					  (udp0->src_port),
+					  clib_net_to_host_u16
+					  (udp0->dst_port));
+	}
+
+      if (PREDICT_TRUE (p0 != NULL))
+	{
+	  if (p0->policy == IPSEC_POLICY_ACTION_PROTECT)
+	    {
+	      nc_protect++;
+	      next_node_index = im->esp_encrypt_node_index;
+	      vnet_buffer (b0)->ipsec.sad_index = p0->sa_index;
+	      vlib_buffer_advance (b0, iph_offset);
+	      p0->counter.packets++;
+	      if (is_ipv6)
+		{
+		  p0->counter.bytes +=
+		    clib_net_to_host_u16 (ip6_0->payload_length);
+		  p0->counter.bytes += sizeof (ip6_header_t);
+		}
+	      else
+		{
+		  p0->counter.bytes += clib_net_to_host_u16 (ip0->length);
+		}
+	    }
+	  else if (p0->policy == IPSEC_POLICY_ACTION_BYPASS)
+	    {
+	      nc_bypass++;
+	      next_node_index = get_next_output_feature_node_index (b0, node);
+	      p0->counter.packets++;
+	      if (is_ipv6)
+		{
+		  p0->counter.bytes +=
+		    clib_net_to_host_u16 (ip6_0->payload_length);
+		  p0->counter.bytes += sizeof (ip6_header_t);
+		}
+	      else
+		{
+		  p0->counter.bytes += clib_net_to_host_u16 (ip0->length);
+		}
+	    }
+	  else
+	    {
+	      nc_discard++;
+	      p0->counter.packets++;
+	      if (is_ipv6)
+		{
+		  p0->counter.bytes +=
+		    clib_net_to_host_u16 (ip6_0->payload_length);
+		  p0->counter.bytes += sizeof (ip6_header_t);
+		}
+	      else
+		{
+		  p0->counter.bytes += clib_net_to_host_u16 (ip0->length);
+		}
+	      next_node_index = im->error_drop_node_index;
+	    }
+	}
+      else
+	{
+	  nc_nomatch++;
+	  next_node_index = im->error_drop_node_index;
+	}
+
+      from += 1;
+      n_left_from -= 1;
+
+      if (PREDICT_FALSE ((last_next_node_index != next_node_index) || f == 0))
+	{
+	  /* if this is not 1st frame */
+	  if (f)
+	    vlib_put_frame_to_node (vm, last_next_node_index, f);
+
+	  last_next_node_index = next_node_index;
+
+	  f = vlib_get_frame_to_node (vm, next_node_index);
+	  to_next = vlib_frame_vector_args (f);
+	}
+
+      to_next[0] = bi0;
+      to_next += 1;
+      f->n_vectors++;
+
+      if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
+	{
+	  ipsec_output_trace_t *tr =
+	    vlib_add_trace (vm, node, b0, sizeof (*tr));
+	  if (spd0)
+	    tr->spd_id = spd0->id;
+	}
+    }
+
+  vlib_put_frame_to_node (vm, next_node_index, f);
+  vlib_node_increment_counter (vm, node->node_index,
+			       IPSEC_OUTPUT_ERROR_POLICY_PROTECT, nc_protect);
+  vlib_node_increment_counter (vm, node->node_index,
+			       IPSEC_OUTPUT_ERROR_POLICY_BYPASS, nc_bypass);
+  vlib_node_increment_counter (vm, node->node_index,
+			       IPSEC_OUTPUT_ERROR_POLICY_DISCARD, nc_discard);
+  vlib_node_increment_counter (vm, node->node_index,
+			       IPSEC_OUTPUT_ERROR_POLICY_NO_MATCH,
+			       nc_nomatch);
+  return from_frame->n_vectors;
+}
+
+static uword
+ipsec_output_ip4_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
+			  vlib_frame_t * frame)
+{
+  return ipsec_output_inline (vm, node, frame, 0);
+}
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (ipsec_output_ip4_node,static) = {
+  .function = ipsec_output_ip4_node_fn,
+  .name = "ipsec-output-ip4",
+  .vector_size = sizeof (u32),
+  .format_trace = format_ipsec_output_trace,
+  .type = VLIB_NODE_TYPE_INTERNAL,
+
+  .n_errors = ARRAY_LEN(ipsec_output_error_strings),
+  .error_strings = ipsec_output_error_strings,
+
+  .n_next_nodes = IPSEC_OUTPUT_N_NEXT,
+  .next_nodes = {
+#define _(s,n) [IPSEC_OUTPUT_NEXT_##s] = n,
+    foreach_ipsec_output_next
+#undef _
+  },
+};
+/* *INDENT-ON* */
+
+VLIB_NODE_FUNCTION_MULTIARCH (ipsec_output_ip4_node, ipsec_output_ip4_node_fn)
+     static uword
+       ipsec_output_ip6_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
+				 vlib_frame_t * frame)
+{
+  return ipsec_output_inline (vm, node, frame, 1);
+}
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (ipsec_output_ip6_node,static) = {
+  .function = ipsec_output_ip6_node_fn,
+  .name = "ipsec-output-ip6",
+  .vector_size = sizeof (u32),
+  .format_trace = format_ipsec_output_trace,
+  .type = VLIB_NODE_TYPE_INTERNAL,
+
+  .n_errors = ARRAY_LEN(ipsec_output_error_strings),
+  .error_strings = ipsec_output_error_strings,
+
+  .n_next_nodes = IPSEC_OUTPUT_N_NEXT,
+  .next_nodes = {
+#define _(s,n) [IPSEC_OUTPUT_NEXT_##s] = n,
+    foreach_ipsec_output_next
+#undef _
+  },
+};
+/* *INDENT-ON* */
+
+VLIB_NODE_FUNCTION_MULTIARCH (ipsec_output_ip6_node, ipsec_output_ip6_node_fn)
+#else /* IPSEC > 1 */
+
+/* Dummy ipsec output node, in case when IPSec is disabled */
+
+static uword
+ipsec_output_node_fn (vlib_main_t * vm,
+		      vlib_node_runtime_t * node, vlib_frame_t * frame)
+{
+  clib_warning ("IPSec disabled");
+  return 0;
+}
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (ipsec_output_node) = {
+  .vector_size = sizeof (u32),
+  .function = ipsec_output_node_fn,
+  .name = "ipsec-output-ip4",
+};
+
+VLIB_REGISTER_NODE (ipsec_output_node) = {
+  .vector_size = sizeof (u32),
+  .function = ipsec_output_node_fn,
+  .name = "ipsec-output-ip6",
+};
+/* *INDENT-ON* */
+#endif
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */