misc: Move l2tp to plugin

Type: refactor

Change-Id: Ifb36eeb146b87e9e305881429d32d6879e955e1e
Signed-off-by: Neale Ranns <nranns@cisco.com>

1 files changed, 0 insertions, 235 deletions

diff --git a/src/vnet/l2tp/encap.c b/src/vnet/l2tp/encap.c
deleted file mode 100644
index 8863ddfa20d..00000000000
--- a/src/vnet/l2tp/encap.c
+++ /dev/null
@@ -1,235 +0,0 @@
-/*
- * encap.c : L2TPv3 tunnel encapsulation
- *
- * Copyright (c) 2013 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 <vppinfra/error.h>
-#include <vppinfra/hash.h>
-#include <vnet/vnet.h>
-#include <vnet/ip/ip.h>
-#include <vnet/ethernet/ethernet.h>
-#include <vnet/l2tp/l2tp.h>
-
-/* Statistics (not really errors) */
-#define foreach_l2t_encap_error					\
-_(NETWORK_TO_USER, "L2TP L2 network to user (ip6) pkts")	\
-_(LOOKUP_FAIL_TO_L3, "L2TP L2 session lookup failed pkts")      \
-_(ADMIN_DOWN, "L2TP tunnel is down")
-
-static char *l2t_encap_error_strings[] = {
-#define _(sym,string) string,
-  foreach_l2t_encap_error
-#undef _
-};
-
-typedef enum
-{
-#define _(sym,str) L2T_ENCAP_ERROR_##sym,
-  foreach_l2t_encap_error
-#undef _
-    L2T_ENCAP_N_ERROR,
-} l2t_encap_error_t;
-
-
-typedef enum
-{
-  L2T_ENCAP_NEXT_DROP,
-  L2T_ENCAP_NEXT_IP6_LOOKUP,
-  L2T_ENCAP_N_NEXT,
-} l2t_encap_next_t;
-
-typedef struct
-{
-  u32 cached_session_index;
-  u32 cached_sw_if_index;
-  vnet_main_t *vnet_main;
-} l2tp_encap_runtime_t;
-
-extern vlib_node_registration_t l2t_encap_node;
-
-#define NSTAGES 3
-
-static inline void
-stage0 (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_buffer_t * b)
-{
-  vlib_prefetch_buffer_header (b, STORE);
-  CLIB_PREFETCH (b->data, 2 * CLIB_CACHE_LINE_BYTES, STORE);
-}
-
-static inline void
-stage1 (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_buffer_t * b)
-{
-  l2tp_encap_runtime_t *rt = (void *) node->runtime_data;
-  vnet_hw_interface_t *hi;
-
-  u32 sw_if_index = vnet_buffer (b)->sw_if_index[VLIB_TX];
-  u32 session_index = rt->cached_session_index;
-
-  if (PREDICT_FALSE (rt->cached_sw_if_index != sw_if_index))
-    {
-      hi = vnet_get_sup_hw_interface (rt->vnet_main, sw_if_index);
-      session_index = rt->cached_session_index = hi->dev_instance;
-      rt->cached_sw_if_index = sw_if_index;
-    }
-
-  /* Remember mapping index, prefetch the mini counter */
-  vnet_buffer (b)->l2t.next_index = L2T_ENCAP_NEXT_IP6_LOOKUP;
-  vnet_buffer (b)->l2t.session_index = session_index;
-
-  /* $$$$ prefetch counter... */
-}
-
-static inline u32
-last_stage (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_buffer_t * b)
-{
-  l2t_main_t *lm = &l2t_main;
-  vlib_node_t *n = vlib_get_node (vm, l2t_encap_node.index);
-  u32 node_counter_base_index = n->error_heap_index;
-  vlib_error_main_t *em = &vm->error_main;
-  l2tpv3_header_t *l2tp;
-  u32 session_index;
-  u32 counter_index;
-  l2t_session_t *s;
-  ip6_header_t *ip6;
-  u16 payload_length;
-  u32 next_index = L2T_ENCAP_NEXT_IP6_LOOKUP;
-
-  /* Other-than-output pkt? We're done... */
-  if (vnet_buffer (b)->l2t.next_index != L2T_ENCAP_NEXT_IP6_LOOKUP)
-    return vnet_buffer (b)->l2t.next_index;
-
-  em->counters[node_counter_base_index + L2T_ENCAP_ERROR_NETWORK_TO_USER] +=
-    1;
-
-  session_index = vnet_buffer (b)->l2t.session_index;
-
-  counter_index =
-    session_index_to_counter_index (session_index,
-				    SESSION_COUNTER_NETWORK_TO_USER);
-
-  /* per-mapping byte stats include the ethernet header */
-  vlib_increment_combined_counter (&lm->counter_main,
-				   vlib_get_thread_index (),
-				   counter_index, 1 /* packet_increment */ ,
-				   vlib_buffer_length_in_chain (vm, b));
-
-  s = pool_elt_at_index (lm->sessions, session_index);
-
-  vnet_buffer (b)->sw_if_index[VLIB_TX] = s->encap_fib_index;
-
-  /* Paint on an l2tpv3 hdr */
-  vlib_buffer_advance (b, -(s->l2tp_hdr_size));
-  l2tp = vlib_buffer_get_current (b);
-
-  l2tp->session_id = s->remote_session_id;
-  l2tp->cookie = s->remote_cookie;
-  if (PREDICT_FALSE (s->l2_sublayer_present))
-    {
-      l2tp->l2_specific_sublayer = 0;
-    }
-
-  /* Paint on an ip6 header */
-  vlib_buffer_advance (b, -(sizeof (*ip6)));
-  ip6 = vlib_buffer_get_current (b);
-
-  if (PREDICT_FALSE (!(s->admin_up)))
-    {
-      b->error = node->errors[L2T_ENCAP_ERROR_ADMIN_DOWN];
-      next_index = L2T_ENCAP_NEXT_DROP;
-      goto done;
-    }
-
-  ip6->ip_version_traffic_class_and_flow_label =
-    clib_host_to_net_u32 (0x6 << 28);
-
-  /* calculate ip6 payload length */
-  payload_length = vlib_buffer_length_in_chain (vm, b);
-  payload_length -= sizeof (*ip6);
-
-  ip6->payload_length = clib_host_to_net_u16 (payload_length);
-  ip6->protocol = IP_PROTOCOL_L2TP;
-  ip6->hop_limit = 0xff;
-  ip6->src_address.as_u64[0] = s->our_address.as_u64[0];
-  ip6->src_address.as_u64[1] = s->our_address.as_u64[1];
-  ip6->dst_address.as_u64[0] = s->client_address.as_u64[0];
-  ip6->dst_address.as_u64[1] = s->client_address.as_u64[1];
-
-
-done:
-  if (PREDICT_FALSE (b->flags & VLIB_BUFFER_IS_TRACED))
-    {
-      l2t_trace_t *t = vlib_add_trace (vm, node, b, sizeof (*t));
-      t->is_user_to_network = 0;
-      t->our_address.as_u64[0] = ip6->src_address.as_u64[0];
-      t->our_address.as_u64[1] = ip6->src_address.as_u64[1];
-      t->client_address.as_u64[0] = ip6->dst_address.as_u64[0];
-      t->client_address.as_u64[1] = ip6->dst_address.as_u64[1];
-      t->session_index = session_index;
-    }
-
-  return next_index;
-}
-
-#include <vnet/pipeline.h>
-
-VLIB_NODE_FN (l2t_encap_node) (vlib_main_t * vm,
-			       vlib_node_runtime_t * node,
-			       vlib_frame_t * frame)
-{
-  return dispatch_pipeline (vm, node, frame);
-}
-
-
-/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (l2t_encap_node) = {
-  .name = "l2tp-encap",
-  .vector_size = sizeof (u32),
-  .format_trace = format_l2t_trace,
-  .type = VLIB_NODE_TYPE_INTERNAL,
-  .runtime_data_bytes = sizeof (l2tp_encap_runtime_t),
-
-  .n_errors = ARRAY_LEN(l2t_encap_error_strings),
-  .error_strings = l2t_encap_error_strings,
-
-  .n_next_nodes = L2T_ENCAP_N_NEXT,
-
-  /*  add dispositions here */
-  .next_nodes = {
-    [L2T_ENCAP_NEXT_IP6_LOOKUP] = "ip6-lookup",
-    [L2T_ENCAP_NEXT_DROP] = "error-drop",
-  },
-};
-/* *INDENT-ON* */
-
-#ifndef CLIB_MARCH_VARIANT
-void
-l2tp_encap_init (vlib_main_t * vm)
-{
-  l2tp_encap_runtime_t *rt;
-
-  rt = vlib_node_get_runtime_data (vm, l2t_encap_node.index);
-  rt->vnet_main = vnet_get_main ();
-  rt->cached_sw_if_index = (u32) ~ 0;
-  rt->cached_session_index = (u32) ~ 0;
-}
-#endif /* CLIB_MARCH_VARIANT */
-
-/*
- * fd.io coding-style-patch-verification: ON
- *
- * Local Variables:
- * eval: (c-set-style "gnu")
- * End:
- */