Move the vnet cdp protocol implementation to a plugin

Add a binary API and debug cli to enable/disable cdp. cdp is disabled
by default.

Change-Id: I307c7e38dfda38e36ff3325f65de7036c34d89b1
Signed-off-by: Dave Barach <dave@barachs.net>

1 files changed, 0 insertions, 208 deletions

diff --git a/src/vnet/cdp/cdp_node.c b/src/vnet/cdp/cdp_node.c
deleted file mode 100644
index 39ac4a908fb..00000000000
--- a/src/vnet/cdp/cdp_node.c
+++ /dev/null
@@ -1,208 +0,0 @@
-/*
- * Copyright (c) 2011-2016 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.
- */
-#include <vnet/cdp/cdp_node.h>
-#include <vnet/ethernet/packet.h>
-
-static vlib_node_registration_t cdp_process_node;
-
-/** \file
-
-    2 x CDP graph nodes: an "interior" node to process
-    incoming announcements, and a "process" node to periodically
-    send announcements.
-
-    The interior node is neither pipelined nor dual-looped, because
-    it would be very unusual to see more than one CDP packet in
-    a given input frame. So, it's a very simple / straighforward
-    example.
-*/
-
-/*
- * packet counter strings
- * Dump these counters via the "show error" CLI command
- */
-static char *cdp_error_strings[] = {
-#define _(sym,string) string,
-  foreach_cdp_error
-#undef _
-};
-
-/*
- * We actually send all cdp pkts to the "error" node after scanning
- * them, so the graph node has only one next-index. The "error-drop"
- * node automatically bumps our per-node packet counters for us.
- */
-typedef enum
-{
-  CDP_INPUT_NEXT_NORMAL,
-  CDP_INPUT_N_NEXT,
-} cdp_next_t;
-
-/*
- * Process a frame of cdp packets
- * Expect 1 packet / frame
- */
-static uword
-cdp_node_fn (vlib_main_t * vm,
-	     vlib_node_runtime_t * node, vlib_frame_t * frame)
-{
-  u32 n_left_from, *from;
-  cdp_input_trace_t *t0;
-
-  from = vlib_frame_vector_args (frame);	/* array of buffer indices */
-  n_left_from = frame->n_vectors;	/* number of buffer indices */
-
-  while (n_left_from > 0)
-    {
-      u32 bi0;
-      vlib_buffer_t *b0;
-      u32 next0, error0;
-
-      bi0 = from[0];
-      b0 = vlib_get_buffer (vm, bi0);
-
-      next0 = CDP_INPUT_NEXT_NORMAL;
-
-      /* scan this cdp pkt. error0 is the counter index to bump */
-      error0 = cdp_input (vm, b0, bi0);
-      b0->error = node->errors[error0];
-
-      /* If this pkt is traced, snapshoot the data */
-      if (b0->flags & VLIB_BUFFER_IS_TRACED)
-	{
-	  int len;
-	  t0 = vlib_add_trace (vm, node, b0, sizeof (*t0));
-	  len = (b0->current_length < sizeof (t0->data))
-	    ? b0->current_length : sizeof (t0->data);
-	  t0->len = len;
-	  clib_memcpy (t0->data, vlib_buffer_get_current (b0), len);
-	}
-      /* push this pkt to the next graph node, always error-drop */
-      vlib_set_next_frame_buffer (vm, node, next0, bi0);
-
-      from += 1;
-      n_left_from -= 1;
-    }
-
-  return frame->n_vectors;
-}
-
-/*
- * cdp input graph node declaration
- */
-/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (cdp_input_node, static) = {
-  .function = cdp_node_fn,
-  .name = "cdp-input",
-  .vector_size = sizeof (u32),
-  .type = VLIB_NODE_TYPE_INTERNAL,
-
-  .n_errors = CDP_N_ERROR,
-  .error_strings = cdp_error_strings,
-
-  .format_trace = cdp_input_format_trace,
-
-  .n_next_nodes = CDP_INPUT_N_NEXT,
-  .next_nodes = {
-    [CDP_INPUT_NEXT_NORMAL] = "error-drop",
-  },
-};
-/* *INDENT-ON* */
-
-/*
- * cdp periodic function
- */
-static uword
-cdp_process (vlib_main_t * vm, vlib_node_runtime_t * rt, vlib_frame_t * f)
-{
-  cdp_main_t *cm = &cdp_main;
-  f64 poll_time_remaining;
-  uword event_type, *event_data = 0;
-
-  /* So we can send events to the cdp process */
-  cm->cdp_process_node_index = cdp_process_node.index;
-
-  /* Dynamically register the cdp input node with the snap classifier */
-  snap_register_input_protocol (vm, "cdp-input", 0xC /* ieee_oui, Cisco */ ,
-				0x2000 /* protocol CDP */ ,
-				cdp_input_node.index);
-
-  snap_register_input_protocol (vm, "cdp-input", 0xC /* ieee_oui, Cisco */ ,
-				0x2004 /* protocol CDP */ ,
-				cdp_input_node.index);
-
-#if 0				/* retain for reference */
-  /* with the hdlc classifier */
-  hdlc_register_input_protocol (vm, HDLC_PROTOCOL_cdp, cdp_input_node.index);
-#endif
-
-  /* with ethernet input (for SRP) */
-  ethernet_register_input_type (vm, ETHERNET_TYPE_CDP /* CDP */ ,
-				cdp_input_node.index);
-
-  poll_time_remaining = 10.0 /* seconds */ ;
-  while (1)
-    {
-      /* sleep until next poll time, or msg serialize event occurs */
-      poll_time_remaining =
-	vlib_process_wait_for_event_or_clock (vm, poll_time_remaining);
-
-      event_type = vlib_process_get_events (vm, &event_data);
-      switch (event_type)
-	{
-	case ~0:		/* no events => timeout */
-	  break;
-
-	default:
-	  clib_warning ("BUG: event type 0x%wx", event_type);
-	  break;
-	}
-      if (event_data)
-	_vec_len (event_data) = 0;
-
-      /* peer timeout scan, send announcements */
-      if (vlib_process_suspend_time_is_zero (poll_time_remaining))
-	{
-	  cdp_periodic (vm);
-	  poll_time_remaining = 10.0;
-	}
-    }
-
-  return 0;
-}
-
-/*
- * cdp periodic node declaration
- */
-/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (cdp_process_node, static) = {
-  .function = cdp_process,
-  .type = VLIB_NODE_TYPE_PROCESS,
-  .name = "cdp-process",
-};
-/* *INDENT-ON* */
-
-void
-vnet_cdp_node_reference (void)
-{
-}
-
-/*
- * fd.io coding-style-patch-verification: ON
- *
- * Local Variables:
- * eval: (c-set-style "gnu")
- * End:
- */