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authorDave Barach <dave@barachs.net>2018-03-10 14:57:00 -0500
committerDave Barach <dave@barachs.net>2018-03-10 15:27:58 -0500
commitaaacfbc5b15b0653489ad2e80db48151a4375ece (patch)
treecbe4228c1e674116563229e52bc5e9d73229b5af /src/vnet
parentfde0929d9362eac5c416f658e1d2031d01a02337 (diff)
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>
Diffstat (limited to 'src/vnet')
-rw-r--r--src/vnet/cdp/cdp.pg7
-rw-r--r--src/vnet/cdp/cdp_input.c506
-rw-r--r--src/vnet/cdp/cdp_node.c208
-rw-r--r--src/vnet/cdp/cdp_node.h147
-rw-r--r--src/vnet/cdp/cdp_periodic.c515
-rw-r--r--src/vnet/cdp/cdp_protocol.h186
6 files changed, 0 insertions, 1569 deletions
diff --git a/src/vnet/cdp/cdp.pg b/src/vnet/cdp/cdp.pg
deleted file mode 100644
index b6ba18656c2..00000000000
--- a/src/vnet/cdp/cdp.pg
+++ /dev/null
@@ -1,7 +0,0 @@
-packet-generator new {
- name cdp
- limit 1
- node cdp-input
- size 374-374
- data { hex 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 }
-}
diff --git a/src/vnet/cdp/cdp_input.c b/src/vnet/cdp/cdp_input.c
deleted file mode 100644
index 3574de68534..00000000000
--- a/src/vnet/cdp/cdp_input.c
+++ /dev/null
@@ -1,506 +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>
-
-cdp_main_t cdp_main;
-
-#define DEBUG_TLV_DUMP 0 /* 1=> dump TLV's to stdout while processing them */
-
-/* Reliable multicast messages we use to keep peers updated */
-mc_serialize_msg_t serialize_cdp_neighbor_msg;
-mc_serialize_msg_t serialize_cdp_keepalive_msg;
-
-/*
- * ported from an unspecified Cisco cdp implementation.
- * Compute / return in HOST byte order. 0 => good checksum.
- */
-u16
-cdp_checksum (void *p, int count)
-{
- u32 sum;
- u16 i, *data;
-
- data = p;
- sum = 0;
- while (count > 1)
- {
- sum += ntohs (*data);
- data++;
- count -= 2;
- }
-
- if (count > 0)
- sum += *(char *) data;
-
- while (sum >> 16)
- {
- sum = (sum & 0xFFFF) + (sum >> 16);
- }
-
- i = (i16) sum;
- return (~i);
-}
-
-/* TLV handler table */
-typedef struct
-{
- char *name;
- u32 tlv_id;
- void *format;
- void *process;
-} tlv_handler_t;
-
-static tlv_handler_t tlv_handlers[];
-
-/* Display a generic TLV as a set of hex bytes */
-static u8 *
-format_generic_tlv (u8 * s, va_list * va)
-{
- cdp_tlv_t *t = va_arg (*va, cdp_tlv_t *);
- tlv_handler_t *h = &tlv_handlers[t->t];
-
- s = format (s, "%s(%d): %U\n", h->name,
- t->t, format_hex_bytes, t->v, t->l - sizeof (*t));
- return s;
-}
-
-/* Ignore / skip a TLV we don't support */
-static cdp_error_t
-process_generic_tlv (cdp_main_t * cm, cdp_neighbor_t * n, cdp_tlv_t * t)
-{
-#if DEBUG_TLV_DUMP > 0
- fformat (stdout, "%U", format_generic_tlv, t);
-#endif
-
- return CDP_ERROR_NONE;
-}
-
-/* print a text tlv */
-static u8 *
-format_text_tlv (u8 * s, va_list * va)
-{
- cdp_tlv_t *t = va_arg (*va, cdp_tlv_t *);
- tlv_handler_t *h = &tlv_handlers[t->t];
- int i;
-
- s = format (s, "%s(%d): ", h->name, t->t);
-
- for (i = 0; i < (t->l - sizeof (*t)); i++)
- vec_add1 (s, t->v[i]);
-
- vec_add1 (s, '\n');
- return s;
-}
-
-#if DEBUG_TLV_DUMP == 0
-/* gcc warning be gone */
-CLIB_UNUSED (static cdp_error_t
- process_text_tlv (cdp_main_t * cm, cdp_neighbor_t * n,
- cdp_tlv_t * t));
-#endif
-
-/* process / skip a generic text TLV that we don't support */
-static cdp_error_t
-process_text_tlv (cdp_main_t * cm, cdp_neighbor_t * n, cdp_tlv_t * t)
-{
-#if DEBUG_TLV_DUMP > 0
- fformat (stdout, "%U\n", format_text_tlv, t);
-#endif
-
- return CDP_ERROR_NONE;
-}
-
-/* per-TLV format function definitions */
-#define format_unused_tlv format_generic_tlv
-#define format_device_name_tlv format_text_tlv
-#define format_address_tlv format_generic_tlv
-#define format_port_id_tlv format_text_tlv
-#define format_capabilities_tlv format_generic_tlv
-#define format_version_tlv format_text_tlv
-#define format_platform_tlv format_text_tlv
-#define format_ipprefix_tlv format_generic_tlv
-#define format_hello_tlv format_generic_tlv
-#define format_vtp_domain_tlv format_generic_tlv
-#define format_native_vlan_tlv format_generic_tlv
-#define format_duplex_tlv format_generic_tlv
-#define format_appl_vlan_tlv format_generic_tlv
-#define format_trigger_tlv format_generic_tlv
-#define format_power_tlv format_generic_tlv
-#define format_mtu_tlv format_generic_tlv
-#define format_trust_tlv format_generic_tlv
-#define format_cos_tlv format_generic_tlv
-#define format_sysname_tlv format_generic_tlv
-#define format_sysobject_tlv format_generic_tlv
-#define format_mgmt_addr_tlv format_generic_tlv
-#define format_physical_loc_tlv format_generic_tlv
-#define format_mgmt_addr2_tlv format_generic_tlv
-#define format_power_requested_tlv format_generic_tlv
-#define format_power_available_tlv format_generic_tlv
-#define format_port_unidirectional_tlv format_generic_tlv
-#define format_unknown_28_tlv format_generic_tlv
-#define format_energywise_tlv format_generic_tlv
-#define format_unknown_30_tlv format_generic_tlv
-#define format_spare_poe_tlv format_generic_tlv
-
-/* tlv ID=0 is a mistake */
-static cdp_error_t
-process_unused_tlv (cdp_main_t * cm, cdp_neighbor_t * n, cdp_tlv_t * t)
-{
- return CDP_ERROR_BAD_TLV;
-}
-
-/* list of text TLV's that we snapshoot */
-#define foreach_text_to_struct_tlv \
-_(device_name,DEBUG_TLV_DUMP) \
-_(version,DEBUG_TLV_DUMP) \
-_(platform,DEBUG_TLV_DUMP) \
-_(port_id,DEBUG_TLV_DUMP)
-
-#define _(z,dbg) \
-static \
-cdp_error_t process_##z##_tlv (cdp_main_t *cm, cdp_neighbor_t *n, \
- cdp_tlv_t *t) \
-{ \
- int i; \
- if (dbg) \
- fformat(stdout, "%U\n", format_text_tlv, t); \
- \
- if (n->z) \
- _vec_len(n->z) = 0; \
- \
- for (i = 0; i < (t->l - sizeof (*t)); i++) \
- vec_add1(n->z, t->v[i]); \
- \
- vec_add1(n->z, 0); \
- \
- return CDP_ERROR_NONE; \
-}
-
-foreach_text_to_struct_tlv
-#undef _
-#define process_address_tlv process_generic_tlv
-#define process_capabilities_tlv process_generic_tlv
-#define process_ipprefix_tlv process_generic_tlv
-#define process_hello_tlv process_generic_tlv
-#define process_vtp_domain_tlv process_generic_tlv
-#define process_native_vlan_tlv process_generic_tlv
-#define process_duplex_tlv process_generic_tlv
-#define process_appl_vlan_tlv process_generic_tlv
-#define process_trigger_tlv process_generic_tlv
-#define process_power_tlv process_generic_tlv
-#define process_mtu_tlv process_generic_tlv
-#define process_trust_tlv process_generic_tlv
-#define process_cos_tlv process_generic_tlv
-#define process_sysname_tlv process_generic_tlv
-#define process_sysobject_tlv process_generic_tlv
-#define process_mgmt_addr_tlv process_generic_tlv
-#define process_physical_loc_tlv process_generic_tlv
-#define process_mgmt_addr2_tlv process_generic_tlv
-#define process_power_requested_tlv process_generic_tlv
-#define process_power_available_tlv process_generic_tlv
-#define process_port_unidirectional_tlv process_generic_tlv
-#define process_unknown_28_tlv process_generic_tlv
-#define process_energywise_tlv process_generic_tlv
-#define process_unknown_30_tlv process_generic_tlv
-#define process_spare_poe_tlv process_generic_tlv
-static tlv_handler_t tlv_handlers[] = {
-#define _(a) {#a, CDP_TLV_##a, format_##a##_tlv, process_##a##_tlv},
- foreach_cdp_tlv_type
-#undef _
-};
-
-#if DEBUG_TLV_DUMP == 0
-CLIB_UNUSED (static u8 * format_cdp_hdr (u8 * s, va_list * va));
-#endif
-
-static u8 *
-format_cdp_hdr (u8 * s, va_list * va)
-{
- cdp_hdr_t *h = va_arg (*va, cdp_hdr_t *);
-
- s = format (s, "version %d, ttl %d(secs), cksum 0x%04x\n",
- h->version, h->ttl, h->checksum);
- return s;
-}
-
-static cdp_error_t
-process_cdp_hdr (cdp_main_t * cm, cdp_neighbor_t * n, cdp_hdr_t * h)
-{
-#if DEBUG_TLV_DUMP > 0
- fformat (stdout, "%U", format_cdp_hdr, h);
-#endif
-
- if (h->version != 1 && h->version != 2)
- return CDP_ERROR_PROTOCOL_VERSION;
-
- n->ttl_in_seconds = h->ttl;
-
- return CDP_ERROR_NONE;
-}
-
-/* scan a cdp packet; header, then tlv's */
-static int
-cdp_packet_scan (cdp_main_t * cm, cdp_neighbor_t * n)
-{
- u8 *cur = n->last_rx_pkt;
- cdp_hdr_t *h;
- cdp_tlv_t *tlv;
- cdp_error_t e = CDP_ERROR_NONE;
- tlv_handler_t *handler;
- cdp_error_t (*fp) (cdp_main_t *, cdp_neighbor_t *, cdp_tlv_t *);
- u16 computed_checksum;
-
- computed_checksum = cdp_checksum (cur, vec_len (cur));
-
- if (computed_checksum)
- return CDP_ERROR_CHECKSUM;
-
- h = (cdp_hdr_t *) cur;
-
- e = process_cdp_hdr (cm, n, h);
- if (e)
- return e;
-
- cur = (u8 *) (h + 1);
-
- while (cur < n->last_rx_pkt + vec_len (n->last_rx_pkt) - 1)
- {
- tlv = (cdp_tlv_t *) cur;
- tlv->t = ntohs (tlv->t);
- tlv->l = ntohs (tlv->l);
- if (tlv->t >= ARRAY_LEN (tlv_handlers))
- return CDP_ERROR_BAD_TLV;
- handler = &tlv_handlers[tlv->t];
- fp = handler->process;
- e = (*fp) (cm, n, tlv);
- if (e)
- return e;
- /* tlv length includes (t, l) */
- cur += tlv->l;
- }
-
- return CDP_ERROR_NONE;
-}
-
-/*
- * cdp input routine
- */
-cdp_error_t
-cdp_input (vlib_main_t * vm, vlib_buffer_t * b0, u32 bi0)
-{
- cdp_main_t *cm = &cdp_main;
- cdp_neighbor_t *n;
- uword *p, nbytes;
- cdp_error_t e;
- uword last_packet_signature;
-
- /* find or create a neighbor pool entry for the (sw) interface
- upon which we received this pkt */
- p = hash_get (cm->neighbor_by_sw_if_index,
- vnet_buffer (b0)->sw_if_index[VLIB_RX]);
-
- if (p == 0)
- {
- pool_get (cm->neighbors, n);
- memset (n, 0, sizeof (*n));
- n->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_RX];
- n->packet_template_index = (u8) ~ 0;
- hash_set (cm->neighbor_by_sw_if_index, n->sw_if_index,
- n - cm->neighbors);
- }
- else
- {
- n = pool_elt_at_index (cm->neighbors, p[0]);
- }
-
- /*
- * typical clib idiom. Don't repeatedly allocate and free
- * the per-neighbor rx buffer. Reset its apparent length to zero
- * and reuse it.
- */
-
- if (n->last_rx_pkt)
- _vec_len (n->last_rx_pkt) = 0;
-
- /* cdp disabled on this interface, we're done */
- if (n->disabled)
- return CDP_ERROR_DISABLED;
-
- /*
- * Make sure the per-neighbor rx buffer is big enough to hold
- * the data we're about to copy
- */
- vec_validate (n->last_rx_pkt, vlib_buffer_length_in_chain (vm, b0) - 1);
-
- /*
- * Coalesce / copy e the buffer chain into the per-neighbor
- * rx buffer
- */
- nbytes = vlib_buffer_contents (vm, bi0, n->last_rx_pkt);
- ASSERT (nbytes <= vec_len (n->last_rx_pkt));
-
- /*
- * Compute Jenkins hash of the new packet, decide if we need to
- * actually parse through the TLV's. CDP packets are all identical,
- * so unless we time out the peer, we don't need to process the packet.
- */
- last_packet_signature =
- hash_memory (n->last_rx_pkt, vec_len (n->last_rx_pkt), 0xd00b);
-
- if (n->last_packet_signature_valid &&
- n->last_packet_signature == last_packet_signature)
- {
- e = CDP_ERROR_CACHE_HIT;
- }
- else
- {
- /* Actually scan the packet */
- e = cdp_packet_scan (cm, n);
- n->last_packet_signature_valid = 1;
- n->last_packet_signature = last_packet_signature;
- }
-
- if (e == CDP_ERROR_NONE)
- {
- n->last_heard = vlib_time_now (vm);
- }
-
- return e;
-}
-
-/*
- * setup neighbor hash table
- */
-static clib_error_t *
-cdp_init (vlib_main_t * vm)
-{
- clib_error_t *error;
- cdp_main_t *cm = &cdp_main;
- void vnet_cdp_node_reference (void);
-
- vnet_cdp_node_reference ();
-
- if ((error = vlib_call_init_function (vm, cdp_periodic_init)))
- return error;
-
- cm->vlib_main = vm;
- cm->vnet_main = vnet_get_main ();
- cm->neighbor_by_sw_if_index = hash_create (0, sizeof (uword));
-
- return 0;
-}
-
-VLIB_INIT_FUNCTION (cdp_init);
-
-
-static u8 *
-format_cdp_neighbors (u8 * s, va_list * va)
-{
- CLIB_UNUSED (vlib_main_t * vm) = va_arg (*va, vlib_main_t *);
- cdp_main_t *cm = va_arg (*va, cdp_main_t *);
- vnet_main_t *vnm = &vnet_main;
- cdp_neighbor_t *n;
- vnet_hw_interface_t *hw;
-
- s = format (s,
- "%=25s %=15s %=25s %=10s\n",
- "Our Port", "Peer System", "Peer Port", "Last Heard");
-
- /* *INDENT-OFF* */
- pool_foreach (n, cm->neighbors,
- ({
- hw = vnet_get_sup_hw_interface (vnm, n->sw_if_index);
-
- if (n->disabled == 0)
- s = format (s, "%=25s %=15s %=25s %=10.1f\n",
- hw->name, n->device_name, n->port_id,
- n->last_heard);
- }));
- /* *INDENT-ON* */
- return s;
-}
-
-
-static clib_error_t *
-show_cdp (vlib_main_t * vm,
- unformat_input_t * input, vlib_cli_command_t * cmd)
-{
- cdp_main_t *cm = &cdp_main;
-
- vlib_cli_output (vm, "%U\n", format_cdp_neighbors, vm, cm);
-
- return 0;
-}
-
-/* *INDENT-OFF* */
-VLIB_CLI_COMMAND (show_cdp_command, static) = {
- .path = "show cdp",
- .short_help = "Show cdp command",
- .function = show_cdp,
-};
-/* *INDENT-ON* */
-
-
-/*
- * packet trace format function, very similar to
- * cdp_packet_scan except that we call the per TLV format
- * functions instead of the per TLV processing functions
- */
-u8 *
-cdp_input_format_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 *);
- cdp_input_trace_t *t = va_arg (*args, cdp_input_trace_t *);
- u8 *cur;
- cdp_hdr_t *h;
- cdp_tlv_t *tlv;
- tlv_handler_t *handler;
- u8 *(*fp) (cdp_tlv_t *);
-
- cur = t->data;
-
- h = (cdp_hdr_t *) cur;
- s = format (s, "%U", format_cdp_hdr, h);
-
- cur = (u8 *) (h + 1);
-
- while (cur < t->data + t->len)
- {
- tlv = (cdp_tlv_t *) cur;
- tlv->t = ntohs (tlv->t);
- tlv->l = ntohs (tlv->l);
- if (tlv->t >= ARRAY_LEN (tlv_handlers))
- {
- s = format (s, "BAD_TLV\n");
- break;
- }
- handler = &tlv_handlers[tlv->t];
- fp = handler->format;
- s = format (s, " %U", fp, tlv);
- /* tlv length includes (t, l) */
- cur += tlv->l;
- }
-
- return s;
-}
-
-/*
- * fd.io coding-style-patch-verification: ON
- *
- * Local Variables:
- * eval: (c-set-style "gnu")
- * End:
- */
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:
- */
diff --git a/src/vnet/cdp/cdp_node.h b/src/vnet/cdp/cdp_node.h
deleted file mode 100644
index 21086c02527..00000000000
--- a/src/vnet/cdp/cdp_node.h
+++ /dev/null
@@ -1,147 +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.
- */
-#ifndef __included_cdp_node_h__
-#define __included_cdp_node_h__
-
-#include <vlib/vlib.h>
-#include <vlib/unix/unix.h>
-
-#include <vnet/snap/snap.h>
-#include <vnet/hdlc/hdlc.h>
-#include <vnet/hdlc/packet.h>
-
-#include <vppinfra/format.h>
-#include <vppinfra/hash.h>
-
-#include <vnet/cdp/cdp_protocol.h>
-
-typedef enum
-{
- CDP_PACKET_TEMPLATE_ETHERNET,
- CDP_PACKET_TEMPLATE_HDLC,
- CDP_PACKET_TEMPLATE_SRP,
- CDP_N_PACKET_TEMPLATES,
-} cdp_packet_template_id_t;
-
-typedef struct
-{
- /* neighbor's vlib software interface index */
- u32 sw_if_index;
-
- /* Timers */
- f64 last_heard;
- f64 last_sent;
-
- /* Neighbor time-to-live (usually 180s) */
- u8 ttl_in_seconds;
-
- /* "no cdp run" or similar */
- u8 disabled;
-
- /* tx packet template id for this neighbor */
- u8 packet_template_index;
-
- /* Jenkins hash optimization: avoid tlv scan, send short keepalive msg */
- u8 last_packet_signature_valid;
- uword last_packet_signature;
-
- /* Info we actually keep about each neighbor */
- u8 *device_name;
- u8 *version;
- u8 *port_id;
- u8 *platform;
-
- /* last received packet, for the J-hash optimization */
- u8 *last_rx_pkt;
-} cdp_neighbor_t;
-
-#define foreach_neighbor_string_field \
-_(device_name) \
-_(version) \
-_(port_id) \
-_(platform)
-
-typedef struct
-{
- /* pool of cdp neighbors */
- cdp_neighbor_t *neighbors;
-
- /* tx pcap debug enable */
- u8 tx_pcap_debug;
-
- /* rapidly find a neighbor by vlib software interface index */
- uword *neighbor_by_sw_if_index;
-
- /* Background process node index */
- u32 cdp_process_node_index;
-
- /* Packet templates for different encap types */
- vlib_packet_template_t packet_templates[CDP_N_PACKET_TEMPLATES];
-
- /* convenience variables */
- vlib_main_t *vlib_main;
- vnet_main_t *vnet_main;
-} cdp_main_t;
-
-extern cdp_main_t cdp_main;
-
-/* Packet counters */
-#define foreach_cdp_error \
-_ (NONE, "good cdp packets (processed)") \
-_ (CACHE_HIT, "good cdp packets (cache hit)") \
-_ (BAD_TLV, "cdp packets with bad TLVs") \
-_ (PROTOCOL_VERSION, "cdp packets with bad protocol versions") \
-_ (CHECKSUM, "cdp packets with bad checksums") \
-_ (DISABLED, "cdp packets received on disabled interfaces")
-
-typedef enum
-{
-#define _(sym,str) CDP_ERROR_##sym,
- foreach_cdp_error
-#undef _
- CDP_N_ERROR,
-} cdp_error_t;
-
-/* cdp packet trace capture */
-typedef struct
-{
- u32 len;
- u8 data[400];
-} cdp_input_trace_t;
-
-typedef enum
-{
- CDP_EVENT_SEND_NEIGHBOR,
- CDP_EVENT_SEND_KEEPALIVE,
-} cdp_process_event_t;
-
-
-cdp_error_t cdp_input (vlib_main_t * vm, vlib_buffer_t * b0, u32 bi0);
-void cdp_periodic (vlib_main_t * vm);
-void cdp_keepalive (cdp_main_t * cm, cdp_neighbor_t * n);
-u16 cdp_checksum (void *p, int count);
-u8 *cdp_input_format_trace (u8 * s, va_list * args);
-
-serialize_function_t serialize_cdp_main, unserialize_cdp_main;
-
-#endif /* __included_cdp_node_h__ */
-
-/*
- * fd.io coding-style-patch-verification: ON
- *
- * Local Variables:
- * eval: (c-set-style "gnu")
- * End:
- */
diff --git a/src/vnet/cdp/cdp_periodic.c b/src/vnet/cdp/cdp_periodic.c
deleted file mode 100644
index 8899c49ce9c..00000000000
--- a/src/vnet/cdp/cdp_periodic.c
+++ /dev/null
@@ -1,515 +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 <vppinfra/hash.h>
-#include <vnet/unix/pcap.h>
-#include <vnet/srp/srp.h>
-#include <vnet/ppp/ppp.h>
-#include <vnet/hdlc/hdlc.h>
-#include <vnet/srp/packet.h>
-
-/*
- * Generate a set of specific CDP TLVs.
- *
- * $$$ eventually these need to fish better data from
- * other data structures; e.g. the hostname, software version info
- * etc.
- */
-
-static void
-add_device_name_tlv (vnet_hw_interface_t * hw, u8 ** t0p)
-{
- cdp_tlv_t *t = (cdp_tlv_t *) * t0p;
-
- t->t = htons (CDP_TLV_device_name);
- t->l = htons (3 + sizeof (*t));
- clib_memcpy (&t->v, "VPP", 3);
-
- *t0p += ntohs (t->l);
-}
-
-static void
-add_port_id_tlv (vnet_hw_interface_t * hw, u8 ** t0p)
-{
- cdp_tlv_t *t = (cdp_tlv_t *) * t0p;
-
- t->t = htons (CDP_TLV_port_id);
- t->l = htons (vec_len (hw->name) + sizeof (*t));
- clib_memcpy (&t->v, hw->name, vec_len (hw->name));
- *t0p += ntohs (t->l);
-}
-
-static void
-add_version_tlv (vnet_hw_interface_t * hw, u8 ** t0p)
-{
- cdp_tlv_t *t = (cdp_tlv_t *) * t0p;
-
- t->t = htons (CDP_TLV_version);
- t->l = htons (12 + sizeof (*t));
- clib_memcpy (&t->v, "VPP Software", 12);
- *t0p += ntohs (t->l);
-}
-
-static void
-add_platform_tlv (vnet_hw_interface_t * hw, u8 ** t0p)
-{
- cdp_tlv_t *t = (cdp_tlv_t *) * t0p;
-
- t->t = htons (CDP_TLV_platform);
- t->l = htons (2 + sizeof (*t));
- clib_memcpy (&t->v, "SW", 2);
- *t0p += ntohs (t->l);
-}
-
-static void
-add_capability_tlv (vnet_hw_interface_t * hw, u8 ** t0p)
-{
- cdp_tlv_t *t = (cdp_tlv_t *) * t0p;
- u32 capabilities;
-
- t->t = htons (CDP_TLV_capabilities);
- t->l = htons (4 + sizeof (*t));
- capabilities = CDP_ROUTER_DEVICE;
- capabilities = htonl (capabilities);
- clib_memcpy (&t->v, &capabilities, sizeof (capabilities));
- *t0p += ntohs (t->l);
-}
-
-static void
-add_tlvs (cdp_main_t * cm, vnet_hw_interface_t * hw, u8 ** t0p)
-{
- add_device_name_tlv (hw, t0p);
- add_port_id_tlv (hw, t0p);
- add_version_tlv (hw, t0p);
- add_platform_tlv (hw, t0p);
- add_capability_tlv (hw, t0p);
-}
-
-/*
- * send a cdp pkt on an ethernet interface
- */
-static void
-send_ethernet_hello (cdp_main_t * cm, cdp_neighbor_t * n, int count)
-{
- u32 *to_next;
- ethernet_llc_snap_and_cdp_header_t *h0;
- vnet_hw_interface_t *hw;
- u32 bi0;
- vlib_buffer_t *b0;
- u8 *t0;
- u16 checksum;
- int nbytes_to_checksum;
- int i;
- vlib_frame_t *f;
- vlib_main_t *vm = cm->vlib_main;
- vnet_main_t *vnm = cm->vnet_main;
-
- for (i = 0; i < count; i++)
- {
- /*
- * see cdp_periodic_init() to understand what's already painted
- * into the buffer by the packet template mechanism
- */
- h0 = vlib_packet_template_get_packet
- (vm, &cm->packet_templates[n->packet_template_index], &bi0);
-
- if (!h0)
- break;
-
- /* Add the interface's ethernet source address */
- hw = vnet_get_sup_hw_interface (vnm, n->sw_if_index);
-
- clib_memcpy (h0->ethernet.src_address, hw->hw_address,
- vec_len (hw->hw_address));
-
- t0 = (u8 *) & h0->cdp.data;
-
- /* add TLVs */
- add_tlvs (cm, hw, &t0);
-
- /* add the cdp packet checksum */
- nbytes_to_checksum = t0 - (u8 *) & h0->cdp;
- checksum = cdp_checksum (&h0->cdp, nbytes_to_checksum);
- h0->cdp.checksum = htons (checksum);
-
- /* Set the outbound packet length */
- b0 = vlib_get_buffer (vm, bi0);
- b0->current_length = nbytes_to_checksum + sizeof (*h0)
- - sizeof (cdp_hdr_t);
-
- /* And the outbound interface */
- vnet_buffer (b0)->sw_if_index[VLIB_TX] = hw->sw_if_index;
-
- /* Set the 802.3 ethernet length */
- h0->ethernet.len = htons (b0->current_length
- - sizeof (ethernet_802_3_header_t));
-
- /* And output the packet on the correct interface */
- f = vlib_get_frame_to_node (vm, hw->output_node_index);
- to_next = vlib_frame_vector_args (f);
- to_next[0] = bi0;
- f->n_vectors = 1;
-
- vlib_put_frame_to_node (vm, hw->output_node_index, f);
- n->last_sent = vlib_time_now (vm);
- }
-}
-
-/*
- * send a cdp pkt on an hdlc interface
- */
-static void
-send_hdlc_hello (cdp_main_t * cm, cdp_neighbor_t * n, int count)
-{
- u32 *to_next;
- hdlc_and_cdp_header_t *h0;
- vnet_hw_interface_t *hw;
- u32 bi0;
- vlib_buffer_t *b0;
- u8 *t0;
- u16 checksum;
- int nbytes_to_checksum;
- int i;
- vlib_frame_t *f;
- vlib_main_t *vm = cm->vlib_main;
- vnet_main_t *vnm = cm->vnet_main;
-
- for (i = 0; i < count; i++)
- {
- /*
- * see cdp_periodic_init() to understand what's already painted
- * into the buffer by the packet template mechanism
- */
- h0 = vlib_packet_template_get_packet
- (vm, &cm->packet_templates[n->packet_template_index], &bi0);
-
- hw = vnet_get_sup_hw_interface (vnm, n->sw_if_index);
-
- t0 = (u8 *) & h0->cdp.data;
-
- /* add TLVs */
- add_tlvs (cm, hw, &t0);
-
- /* add the cdp packet checksum */
- nbytes_to_checksum = t0 - (u8 *) & h0->cdp;
- checksum = cdp_checksum (&h0->cdp, nbytes_to_checksum);
- h0->cdp.checksum = htons (checksum);
-
- /* Set the outbound packet length */
- b0 = vlib_get_buffer (vm, bi0);
- b0->current_length = nbytes_to_checksum + sizeof (*h0)
- - sizeof (cdp_hdr_t);
-
- /* And output the packet on the correct interface */
- f = vlib_get_frame_to_node (vm, hw->output_node_index);
- to_next = vlib_frame_vector_args (f);
- to_next[0] = bi0;
- f->n_vectors = 1;
-
- vlib_put_frame_to_node (vm, hw->output_node_index, f);
- n->last_sent = vlib_time_now (vm);
- }
-}
-
-/*
- * send a cdp pkt on an srp interface
- */
-static void
-send_srp_hello (cdp_main_t * cm, cdp_neighbor_t * n, int count)
-{
- u32 *to_next;
- srp_and_cdp_header_t *h0;
- vnet_hw_interface_t *hw;
- u32 bi0;
- vlib_buffer_t *b0;
- u8 *t0;
- u16 checksum;
- int nbytes_to_checksum;
- int i;
- vlib_frame_t *f;
- vlib_main_t *vm = cm->vlib_main;
- vnet_main_t *vnm = cm->vnet_main;
-
- for (i = 0; i < count; i++)
- {
- /*
- * see cdp_periodic_init() to understand what's already painted
- * into the buffer by the packet template mechanism
- */
- h0 = vlib_packet_template_get_packet
- (vm, &cm->packet_templates[n->packet_template_index], &bi0);
-
- hw = vnet_get_sup_hw_interface (vnm, n->sw_if_index);
-
- t0 = (u8 *) & h0->cdp.data;
-
- /* add TLVs */
- add_tlvs (cm, hw, &t0);
-
- /* Add the interface's ethernet source address */
- clib_memcpy (h0->ethernet.src_address, hw->hw_address,
- vec_len (hw->hw_address));
-
- /* add the cdp packet checksum */
- nbytes_to_checksum = t0 - (u8 *) & h0->cdp;
- checksum = cdp_checksum (&h0->cdp, nbytes_to_checksum);
- h0->cdp.checksum = htons (checksum);
-
- /* Set the outbound packet length */
- b0 = vlib_get_buffer (vm, bi0);
- b0->current_length = nbytes_to_checksum + sizeof (*h0)
- - sizeof (cdp_hdr_t);
-
- /* And output the packet on the correct interface */
- f = vlib_get_frame_to_node (vm, hw->output_node_index);
- to_next = vlib_frame_vector_args (f);
- to_next[0] = bi0;
- f->n_vectors = 1;
-
- vlib_put_frame_to_node (vm, hw->output_node_index, f);
- n->last_sent = vlib_time_now (vm);
- }
-}
-
-/*
- * Decide which cdp packet template to use
- */
-static int
-pick_packet_template (cdp_main_t * cm, cdp_neighbor_t * n)
-{
- n->packet_template_index = CDP_PACKET_TEMPLATE_ETHERNET;
-
- return 0;
-}
-
-/* Send a cdp neighbor announcement */
-static void
-send_hello (cdp_main_t * cm, cdp_neighbor_t * n, int count)
-{
- if (n->packet_template_index == (u8) ~ 0)
- {
- /* If we don't know how to talk to this peer, don't try again */
- if (pick_packet_template (cm, n))
- {
- n->last_sent = 1e70;
- return;
- }
- }
-
- switch (n->packet_template_index)
- {
- case CDP_PACKET_TEMPLATE_ETHERNET:
- send_ethernet_hello (cm, n, count);
- break;
-
- case CDP_PACKET_TEMPLATE_HDLC:
- send_hdlc_hello (cm, n, count);
- break;
-
- case CDP_PACKET_TEMPLATE_SRP:
- send_srp_hello (cm, n, count);
- break;
-
- default:
- ASSERT (0);
- }
- n->last_sent = vlib_time_now (cm->vlib_main);
-}
-
-static void
-delete_neighbor (cdp_main_t * cm, cdp_neighbor_t * n, int want_broadcast)
-{
- hash_unset (cm->neighbor_by_sw_if_index, n->sw_if_index);
- vec_free (n->device_name);
- vec_free (n->version);
- vec_free (n->port_id);
- vec_free (n->platform);
- vec_free (n->last_rx_pkt);
- pool_put (cm->neighbors, n);
-}
-
-void
-cdp_periodic (vlib_main_t * vm)
-{
- cdp_main_t *cm = &cdp_main;
- cdp_neighbor_t *n;
- f64 now = vlib_time_now (vm);
- vnet_sw_interface_t *sw;
- static u32 *delete_list = 0;
- int i;
- static cdp_neighbor_t **n_list = 0;
-
- /* *INDENT-OFF* */
- pool_foreach (n, cm->neighbors,
- ({
- vec_add1 (n_list, n);
- }));
- /* *INDENT-ON* */
-
- /* Across all cdp neighbors known to the system */
- for (i = 0; i < vec_len (n_list); i++)
- {
- n = n_list[i];
-
- /* "no cdp run" provisioned on the interface? */
- if (n->disabled == 1)
- continue;
-
- sw = vnet_get_sw_interface (cm->vnet_main, n->sw_if_index);
-
- /* Interface shutdown or rx timeout? */
- if (!(sw->flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP)
- || (now > (n->last_heard + (f64) n->ttl_in_seconds)))
- /* add to list of neighbors to delete */
- vec_add1 (delete_list, n - cm->neighbors);
- else if (n->last_sent == 0.0)
- /* First time, send 3 hellos */
- send_hello (cm, n, 3 /* three to begin with */ );
- else if (now > (n->last_sent + (((f64) n->ttl_in_seconds) / 6.0)))
- /* Normal keepalive, send one */
- send_hello (cm, n, 1 /* one as a keepalive */ );
- }
-
- for (i = 0; i < vec_len (delete_list); i++)
- {
- n = vec_elt_at_index (cm->neighbors, delete_list[i]);
- delete_neighbor (cm, n, 1);
- }
- if (delete_list)
- _vec_len (delete_list) = 0;
- if (n_list)
- _vec_len (n_list) = 0;
-}
-
-static clib_error_t *
-cdp_periodic_init (vlib_main_t * vm)
-{
- cdp_main_t *cm = &cdp_main;
-
- /* Create the ethernet cdp hello packet template */
- {
- ethernet_llc_snap_and_cdp_header_t h;
-
- memset (&h, 0, sizeof (h));
-
- /* Send to 01:00:0c:cc:cc */
- h.ethernet.dst_address[0] = 0x01;
- /* h.ethernet.dst_address[1] = 0x00; (memset) */
- h.ethernet.dst_address[2] = 0x0C;
- h.ethernet.dst_address[3] = 0xCC;
- h.ethernet.dst_address[4] = 0xCC;
- h.ethernet.dst_address[5] = 0xCC;
-
- /* leave src address blank (fill in at send time) */
-
- /* leave length blank (fill in at send time) */
-
- /* LLC */
- h.llc.dst_sap = h.llc.src_sap = 0xAA; /* SNAP */
- h.llc.control = 0x03; /* UI (no extended control bytes) */
-
- /* SNAP */
- /* h.snap.oui[0] = 0x00; (memset) */
- /* h.snap.oui[1] = 0x00; (memset) */
- h.snap.oui[2] = 0x0C; /* Cisco = 0x00000C */
- h.snap.protocol = htons (0x2000); /* CDP = 0x2000 */
-
- /* CDP */
- h.cdp.version = 2;
- h.cdp.ttl = 180;
-
- vlib_packet_template_init
- (vm, &cm->packet_templates[CDP_PACKET_TEMPLATE_ETHERNET],
- /* data */ &h,
- sizeof (h),
- /* alloc chunk size */ 8,
- "cdp-ethernet");
- }
-
-#if 0 /* retain for reference */
-
- /* Create the hdlc cdp hello packet template */
- {
- hdlc_and_cdp_header_t h;
-
- memset (&h, 0, sizeof (h));
-
- h.hdlc.address = 0x0f;
- /* h.hdlc.control = 0; (memset) */
- h.hdlc.protocol = htons (0x2000); /* CDP = 0x2000 */
-
- /* CDP */
- h.cdp.version = 2;
- h.cdp.ttl = 180;
-
- vlib_packet_template_init
- (vm, &cm->packet_templates[CDP_PACKET_TEMPLATE_HDLC],
- /* data */ &h,
- sizeof (h),
- /* alloc chunk size */ 8,
- "cdp-hdlc");
- }
-
- /* Create the srp cdp hello packet template */
- {
- srp_and_cdp_header_t h;
-
- memset (&h, 0, sizeof (h));
-
- /* Send to 01:00:0c:cc:cc */
- h.ethernet.dst_address[0] = 0x01;
- /* h.ethernet.dst_address[1] = 0x00; (memset) */
- h.ethernet.dst_address[2] = 0x0C;
- h.ethernet.dst_address[3] = 0xCC;
- h.ethernet.dst_address[4] = 0xCC;
- h.ethernet.dst_address[5] = 0xCC;
-
- /* leave src address blank (fill in at send time) */
-
- /* The srp header is filled in at xmt */
- h.srp.ttl = 1;
- h.srp.priority = 7;
- h.srp.mode = SRP_MODE_data;
- srp_header_compute_parity (&h.srp);
-
- /* Inner ring and parity will be set at send time */
-
- h.ethernet.type = htons (0x2000); /* CDP = 0x2000 */
-
- /* CDP */
- h.cdp.version = 2;
- h.cdp.ttl = 180;
-
- vlib_packet_template_init
- (vm, &cm->packet_templates[CDP_PACKET_TEMPLATE_SRP],
- /* data */ &h,
- sizeof (h),
- /* alloc chunk size */ 8,
- "cdp-srp");
- }
-#endif
-
- return 0;
-}
-
-VLIB_INIT_FUNCTION (cdp_periodic_init);
-
-/*
- * fd.io coding-style-patch-verification: ON
- *
- * Local Variables:
- * eval: (c-set-style "gnu")
- * End:
- */
diff --git a/src/vnet/cdp/cdp_protocol.h b/src/vnet/cdp/cdp_protocol.h
deleted file mode 100644
index dc6c66d52c3..00000000000
--- a/src/vnet/cdp/cdp_protocol.h
+++ /dev/null
@@ -1,186 +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.
- */
-#ifndef __included_cdp_protocol_h__
-#define __included_cdp_protocol_h__
-
-#include <vnet/ethernet/ethernet.h> /* for ethernet_header_t */
-#include <vnet/llc/llc.h>
-#include <vnet/snap/snap.h>
-#include <vnet/srp/packet.h>
-
-typedef CLIB_PACKED (struct
- {
- u8 version;
- u8 ttl;
- u16 checksum; /* 1's complement of the 1's complement sum */
- u8 data[0];
- }) cdp_hdr_t;
-
-typedef struct
-{
- u8 dst_address[6];
- u8 src_address[6];
- u16 len;
-} ethernet_802_3_header_t;
-
-typedef CLIB_PACKED (struct
- {
- ethernet_802_3_header_t ethernet;
- llc_header_t llc; snap_header_t snap; cdp_hdr_t cdp;
- }) ethernet_llc_snap_and_cdp_header_t;
-
-typedef CLIB_PACKED (struct
- {
- hdlc_header_t hdlc; cdp_hdr_t cdp;
- }) hdlc_and_cdp_header_t;
-
-typedef CLIB_PACKED (struct
- {
- srp_header_t srp;
- ethernet_header_t ethernet; cdp_hdr_t cdp;
- }) srp_and_cdp_header_t;
-
-typedef CLIB_PACKED (struct
- {
- u16 t;
- u16 l;
- u8 v[0];
- }) cdp_tlv_t;
-
-/*
- * TLV codes.
- */
-#define foreach_cdp_tlv_type \
-_(unused) \
-_(device_name) /* uniquely identifies the device */ \
-_(address) /* list of addresses this device has */ \
-_(port_id) /* port CDP packet was sent out on */ \
-_(capabilities) /* funct. capabilities of the device */ \
-_(version) /* version */ \
-_(platform) /* hardware platform of this device */ \
-_(ipprefix) /* An IP network prefix */ \
-_(hello) /* Pprotocol piggyback hello msg */ \
-_(vtp_domain) /* VTP management domain */ \
-_(native_vlan) /* Native VLAN number */ \
-_(duplex) /* The interface duplex mode */ \
-_(appl_vlan) /* Appliance VLAN-ID TLV */ \
-_(trigger) /* For sending trigger TLV msgs. */ \
-_(power) /* Power consumption of that device */ \
-_(mtu) /* MTU defined for sending intf. */ \
-_(trust) /* Extended trust TLV */ \
-_(cos) /* COS for Untrusted Port TLV */ \
-_(sysname) /* System name (FQDN of device) */ \
-_(sysobject) /* OID of sysObjectID MIB object */ \
-_(mgmt_addr) /* SNMP manageable addrs. of device */ \
-_(physical_loc) /* Physical Location of the device */ \
-_(mgmt_addr2) /* External Port-ID */ \
-_(power_requested) \
-_(power_available) \
-_(port_unidirectional) \
-_(unknown_28) \
-_(energywise) \
-_(unknown_30) \
-_(spare_poe)
-
-typedef enum
-{
-#define _(t) CDP_TLV_##t,
- foreach_cdp_tlv_type
-#undef _
-} cdp_tlv_code_t;
-
-/*
- The address TLV looks as follows:
-
- +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- | Number of addresses |
- +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- | IDRP encoded address |
- +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-
- An address is encoded in IDRP format:
-
- 0 1 2 3
- 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
- +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- | PT | PT Length | Protocol (variable) ...
- +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- | Address length | Address (variable) ...
- +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-
- PT: Protocol type
- 1 = NLPID format
- 2 = 802.2 format
-
- PT Length:
- Length of protocol field, 1 for PT = 1, and either 3 or 8 for
- 802.2 format depending if SNAP is used for PT = 2.
-
- The encodings for the other protocols have the following format:
-
- field: <SSAP><DSAP><CTRL><-------OUI------><protocl_TYPE>
- | | | | | | | | |
- bytes: 0 1 2 3 4 5 6 7 8
-
- where the first 3 bytes are 0xAAAA03 for SNAP encoded addresses.
- The OUI is 000000 for ethernet and <protocl_TYPE>
- is the assigned Ethernet type code for the particular protocol.
- e.g. for DECnet the encoding is AAAA03 000000 6003.
- for IPv6 the encoding is AAAA03 000000 86DD
-*/
-
-/*
- * Capabilities.
- */
-
-#define CDP_ROUTER_DEVICE 0x0001
-#define CDP_TB_DEVICE 0x0002
-#define CDP_SRB_DEVICE 0x0004
-#define CDP_SWITCH_DEVICE 0x0008
-#define CDP_HOST_DEVICE 0x0010
-#define CDP_IGMP_DEVICE 0x0020
-#define CDP_REPEATER_DEVICE 0x0040
-
-/*
- The protocol-hello TLV looks as follows:
-
- 0 1 2 3
- 012345678901234567890123456789012345678
- +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- | Type | Length |
- +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- | OUI |
- +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- | Protocol ID |
- +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- | up to 27 bytes of message |
- +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-*/
-
-/*
- * These macros define the valid values for the Duplex TLV.
- */
-#define CDP_DUPLEX_TLV_HALF 0x0
-#define CDP_DUPLEX_TLV_FULL 0x1
-
-#endif /* __included_cdp_protocol_h__ */
-
-/*
- * fd.io coding-style-patch-verification: ON
- *
- * Local Variables:
- * eval: (c-set-style "gnu")
- * End:
- */