diff options
Diffstat (limited to 'vnet/vnet/cdp/cdp_node.c')
| -rw-r--r-- | vnet/vnet/cdp/cdp_node.c | 208 |
1 files changed, 0 insertions, 208 deletions
diff --git a/vnet/vnet/cdp/cdp_node.c b/vnet/vnet/cdp/cdp_node.c deleted file mode 100644 index 39ac4a908fb..00000000000 --- a/vnet/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: - */ |