blob: d6d84bfd1a2fd6c5422848d157259cf9bad1b334 [file] [log] [blame]
/*
* 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.
*/
/**
* @file
* @brief LLDP CLI handling
*
*/
#include <vnet/lisp-cp/lisp_types.h>
#include <vnet/lldp/lldp_node.h>
#ifndef ETHER_ADDR_LEN
#include <net/ethernet.h>
#endif
typedef enum lldp_cfg_err
{
lldp_ok,
lldp_not_supported,
lldp_invalid_arg,
} lldp_cfg_err_t;
static clib_error_t *
lldp_cfg_err_to_clib_err (lldp_cfg_err_t e)
{
switch (e)
{
case lldp_ok:
return 0;
case lldp_not_supported:
return clib_error_return (0, "not supported");
case lldp_invalid_arg:
return clib_error_return (0, "invalid argument");
}
return 0;
}
static lldp_cfg_err_t
lldp_cfg_intf_set (u32 hw_if_index, int enable)
{
lldp_main_t *lm = &lldp_main;
vnet_main_t *vnm = lm->vnet_main;
ethernet_main_t *em = &ethernet_main;
const vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index);
const ethernet_interface_t *eif = ethernet_get_interface (em, hw_if_index);
if (!eif)
{
return lldp_not_supported;
}
if (enable)
{
lldp_intf_t *n = lldp_get_intf (lm, hw_if_index);
if (n)
{
/* already enabled */
return 0;
}
n = lldp_create_intf (lm, hw_if_index);
const vnet_sw_interface_t *sw =
vnet_get_sw_interface (lm->vnet_main, hi->sw_if_index);
if (sw->flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP)
{
lldp_schedule_intf (lm, n);
}
}
else
{
lldp_intf_t *n = lldp_get_intf (lm, hi->sw_if_index);
lldp_delete_intf (lm, n);
}
return 0;
}
static clib_error_t *
lldp_intf_cmd (vlib_main_t * vm, unformat_input_t * input,
vlib_cli_command_t * cmd)
{
lldp_main_t *lm = &lldp_main;
vnet_main_t *vnm = lm->vnet_main;
u32 hw_if_index;
int enable = 0;
if (unformat (input, "%U %U", unformat_vnet_hw_interface, vnm, &hw_if_index,
unformat_vlib_enable_disable, &enable))
{
return
lldp_cfg_err_to_clib_err (lldp_cfg_intf_set (hw_if_index, enable));
}
else
{
return clib_error_return (0, "unknown input `%U'",
format_unformat_error, input);
}
return 0;
}
static lldp_cfg_err_t
lldp_cfg_set (u8 ** host, int hold_time, int tx_interval)
{
lldp_main_t *lm = &lldp_main;
int reschedule = 0;
if (host && *host)
{
vec_free (lm->sys_name);
lm->sys_name = *host;
*host = NULL;
}
if (hold_time)
{
if (hold_time < LLDP_MIN_TX_HOLD || hold_time > LLDP_MAX_TX_HOLD)
{
return lldp_invalid_arg;
}
if (lm->msg_tx_hold != hold_time)
{
lm->msg_tx_hold = hold_time;
reschedule = 1;
}
}
if (tx_interval)
{
if (tx_interval < LLDP_MIN_TX_INTERVAL ||
tx_interval > LLDP_MAX_TX_INTERVAL)
{
return lldp_invalid_arg;
}
if (lm->msg_tx_interval != tx_interval)
{
reschedule = 1;
lm->msg_tx_interval = tx_interval;
}
}
if (reschedule)
{
vlib_process_signal_event (lm->vlib_main, lm->lldp_process_node_index,
LLDP_EVENT_RESCHEDULE, 0);
}
return lldp_ok;
}
static clib_error_t *
lldp_cfg_cmd (vlib_main_t * vm, unformat_input_t * input,
vlib_cli_command_t * cmd)
{
int hold_time = 0;
int tx_interval = 0;
u8 *host = NULL;
clib_error_t *ret = NULL;
while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
{
if (unformat (input, "system-name %s", &host))
{
}
else if (unformat (input, "tx-hold %d", &hold_time))
{
if (hold_time < LLDP_MIN_TX_HOLD || hold_time > LLDP_MAX_TX_HOLD)
{
ret =
clib_error_return (0,
"invalid tx-hold `%d' (out of range <%d,%d>)",
hold_time, LLDP_MIN_TX_HOLD,
LLDP_MAX_TX_HOLD);
goto out;
}
}
else if (unformat (input, "tx-interval %d", &tx_interval))
{
if (tx_interval < LLDP_MIN_TX_INTERVAL ||
tx_interval > LLDP_MAX_TX_INTERVAL)
{
ret =
clib_error_return (0,
"invalid tx-interval `%d' (out of range <%d,%d>)",
tx_interval, LLDP_MIN_TX_INTERVAL,
LLDP_MAX_TX_INTERVAL);
goto out;
}
}
else
{
break;
}
}
ret =
lldp_cfg_err_to_clib_err (lldp_cfg_set (&host, hold_time, tx_interval));
out:
vec_free (host);
return ret;
}
/* *INDENT-OFF* */
VLIB_CLI_COMMAND(set_interface_lldp_cmd, static) = {
.path = "set interface lldp",
.short_help = "set interface lldp <interface> (enable | disable) ",
.function = lldp_intf_cmd,
};
VLIB_CLI_COMMAND(set_lldp_cmd, static) = {
.path = "set lldp",
.short_help = "set lldp [system-name <string>] [tx-hold <value>] "
"[tx-interval <value>]",
.function = lldp_cfg_cmd,
};
/* *INDENT-ON* */
static const char *
lldp_chassis_id_subtype_str (lldp_chassis_id_subtype_t t)
{
switch (t)
{
#define F(num, val, str) \
case num: \
return str;
foreach_chassis_id_subtype (F)
#undef F
}
return "unknown chassis subtype";
}
static const char *
lldp_port_id_subtype_str (lldp_port_id_subtype_t t)
{
switch (t)
{
#define F(num, val, str) \
case num: \
return str;
foreach_port_id_subtype (F)
#undef F
}
return "unknown port subtype";
}
/*
* format port id subtype&value
*
* @param va - 1st argument - unsigned - port id subtype
* @param va - 2nd argument - u8* - port id
* @param va - 3rd argument - unsigned - port id length
* @param va - 4th argument - int - 1 for detailed output, 0 for simple
*/
u8 *
format_lldp_port_id (u8 * s, va_list * va)
{
const lldp_port_id_subtype_t subtype = va_arg (*va, unsigned);
const u8 *id = va_arg (*va, u8 *);
const unsigned len = va_arg (*va, unsigned);
const int detail = va_arg (*va, int);
if (!id)
{
return s;
}
switch (subtype)
{
case LLDP_PORT_ID_SUBTYPE_NAME (intf_alias):
/* fallthrough */
case LLDP_PORT_ID_SUBTYPE_NAME (port_comp):
/* fallthrough */
case LLDP_PORT_ID_SUBTYPE_NAME (local):
/* fallthrough */
case LLDP_PORT_ID_SUBTYPE_NAME (intf_name):
if (detail)
{
s = format (s, "%U(%s)", format_ascii_bytes, id, len,
lldp_port_id_subtype_str (subtype));
}
else
{
s = format (s, "%U", format_ascii_bytes, id, len);
}
break;
case LLDP_PORT_ID_SUBTYPE_NAME (mac_addr):
if (ETHER_ADDR_LEN == len)
{
if (detail)
{
s = format (s, "%U(%s)", format_mac_address, id,
lldp_port_id_subtype_str (subtype));
}
else
{
s = format (s, "%U", format_mac_address, id);
}
break;
}
/* fallthrough */
case LLDP_PORT_ID_SUBTYPE_NAME (net_addr):
/* TODO */
/* fallthrough */
default:
if (detail)
{
s = format (s, "%U(%s)", format_hex_bytes, id, len,
lldp_port_id_subtype_str (subtype));
}
else
{
s = format (s, "%U", format_hex_bytes, id, len);
}
break;
}
return s;
}
/*
* format chassis id subtype&value
*
* @param s format string
* @param va - 1st argument - unsigned - chassis id subtype
* @param va - 2nd argument - u8* - chassis id
* @param va - 3rd argument - unsigned - chassis id length
* @param va - 4th argument - int - 1 for detailed output, 0 for simple
*/
u8 *
format_lldp_chassis_id (u8 * s, va_list * va)
{
const lldp_chassis_id_subtype_t subtype =
va_arg (*va, lldp_chassis_id_subtype_t);
const u8 *id = va_arg (*va, u8 *);
const unsigned len = va_arg (*va, unsigned);
const int detail = va_arg (*va, int);
if (!id)
{
return s;
}
switch (subtype)
{
case LLDP_CHASS_ID_SUBTYPE_NAME (chassis_comp):
/* fallthrough */
case LLDP_CHASS_ID_SUBTYPE_NAME (intf_alias):
/* fallthrough */
case LLDP_CHASS_ID_SUBTYPE_NAME (port_comp):
/* fallthrough */
case LLDP_PORT_ID_SUBTYPE_NAME (local):
/* fallthrough */
case LLDP_CHASS_ID_SUBTYPE_NAME (intf_name):
if (detail)
{
s = format (s, "%U(%s)", format_ascii_bytes, id, len,
lldp_chassis_id_subtype_str (subtype));
}
else
{
s = format (s, "%U", format_ascii_bytes, id, len);
}
break;
case LLDP_CHASS_ID_SUBTYPE_NAME (mac_addr):
if (ETHER_ADDR_LEN == len)
{
if (detail)
{
s = format (s, "%U(%s)", format_mac_address, id,
lldp_chassis_id_subtype_str (subtype));
}
else
{
s = format (s, "%U", format_mac_address, id);
}
break;
}
/* fallthrough */
case LLDP_CHASS_ID_SUBTYPE_NAME (net_addr):
/* TODO */
default:
if (detail)
{
s = format (s, "%U(%s)", format_hex_bytes, id, len,
lldp_chassis_id_subtype_str (subtype));
}
else
{
s = format (s, "%U", format_hex_bytes, id, len);
}
break;
}
return s;
}
/*
* convert a tlv code to human-readable string
*/
static const char *
lldp_tlv_code_str (lldp_tlv_code_t t)
{
switch (t)
{
#define F(n, t, s) \
case n: \
return s;
foreach_lldp_tlv_type (F)
#undef F
}
return "unknown lldp tlv";
}
/*
* format a single LLDP TLV
*
* @param s format string
* @param va variable list - pointer to lldp_tlv_t is expected
*/
u8 *
format_lldp_tlv (u8 * s, va_list * va)
{
const lldp_tlv_t *tlv = va_arg (*va, lldp_tlv_t *);
if (!tlv)
{
return s;
}
u16 l = lldp_tlv_get_length (tlv);
switch (lldp_tlv_get_code (tlv))
{
case LLDP_TLV_NAME (chassis_id):
s = format (s, "%U", format_lldp_chassis_id,
((lldp_chassis_id_tlv_t *) tlv)->subtype,
((lldp_chassis_id_tlv_t *) tlv)->id,
l - STRUCT_SIZE_OF (lldp_chassis_id_tlv_t, subtype), 1);
break;
case LLDP_TLV_NAME (port_id):
s = format (s, "%U", format_lldp_port_id,
((lldp_port_id_tlv_t *) tlv)->subtype,
((lldp_port_id_tlv_t *) tlv)->id,
l - STRUCT_SIZE_OF (lldp_port_id_tlv_t, subtype), 1);
break;
case LLDP_TLV_NAME (ttl):
s = format (s, "%d", ntohs (((lldp_ttl_tlv_t *) tlv)->ttl));
break;
case LLDP_TLV_NAME (sys_name):
/* fallthrough */
case LLDP_TLV_NAME (sys_desc):
s = format (s, "%U", format_ascii_bytes, tlv->v, l);
break;
default:
s = format (s, "%U", format_hex_bytes, tlv->v, l);
}
return s;
}
static u8 *
format_time_ago (u8 * s, va_list * va)
{
f64 ago = va_arg (*va, double);
f64 now = va_arg (*va, double);
if (ago < 0.01)
{
return format (s, "never");
}
return format (s, "%.1fs ago", now - ago);
}
static u8 *
format_lldp_intfs_detail (u8 * s, vlib_main_t * vm, const lldp_main_t * lm)
{
vnet_main_t *vnm = &vnet_main;
const lldp_intf_t *n;
const vnet_hw_interface_t *hw;
const vnet_sw_interface_t *sw;
s = format (s, "LLDP configuration:\n");
if (lm->sys_name)
{
s = format (s, "Configured system name: %U\n", format_ascii_bytes,
lm->sys_name, vec_len (lm->sys_name));
}
s = format (s, "Configured tx-hold: %d\n", (int) lm->msg_tx_hold);
s = format (s, "Configured tx-interval: %d\n", (int) lm->msg_tx_interval);
s = format (s, "\nLLDP-enabled interface table:\n");
f64 now = vlib_time_now (vm);
/* *INDENT-OFF* */
pool_foreach(
n, lm->intfs, ({
hw = vnet_get_hw_interface(vnm, n->hw_if_index);
sw = vnet_get_sw_interface(lm->vnet_main, hw->sw_if_index);
/* Interface shutdown */
if (!(sw->flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP))
{
s = format(s, "\nInterface name: %s\nInterface/peer state: "
"interface down\nLast packet sent: %U\n",
hw->name, format_time_ago, n->last_sent, now);
}
else if (now < n->last_heard + n->ttl)
{
s = format(s,
"\nInterface name: %s\nInterface/peer state: "
"active\nPeer chassis ID: %U\nRemote port ID: %U\nLast "
"packet sent: %U\nLast packet received: %U\n",
hw->name, format_lldp_chassis_id, n->chassis_id_subtype,
n->chassis_id, vec_len(n->chassis_id), 1,
format_lldp_port_id, n->port_id_subtype, n->port_id,
vec_len(n->port_id), 1, format_time_ago, n->last_sent,
now, format_time_ago, n->last_heard, now);
}
else
{
s = format(s, "\nInterface name: %s\nInterface/peer state: "
"inactive(timeout)\nLast known peer chassis ID: "
"%U\nLast known peer port ID: %U\nLast packet sent: "
"%U\nLast packet received: %U\n",
hw->name, format_lldp_chassis_id, n->chassis_id_subtype,
n->chassis_id, vec_len(n->chassis_id), 1,
format_lldp_port_id, n->port_id_subtype, n->port_id,
vec_len(n->port_id), 1, format_time_ago, n->last_sent,
now, format_time_ago, n->last_heard, now);
}
}));
/* *INDENT-ON* */
return s;
}
static u8 *
format_lldp_intfs (u8 * s, va_list * va)
{
vlib_main_t *vm = va_arg (*va, vlib_main_t *);
const lldp_main_t *lm = va_arg (*va, lldp_main_t *);
const int detail = va_arg (*va, int);
vnet_main_t *vnm = &vnet_main;
const lldp_intf_t *n;
if (detail)
{
return format_lldp_intfs_detail (s, vm, lm);
}
f64 now = vlib_time_now (vm);
s = format (s, "%-25s %-25s %-25s %=15s %=15s %=10s\n", "Local interface",
"Peer chassis ID", "Remote port ID", "Last heard", "Last sent",
"Status");
/* *INDENT-OFF* */
pool_foreach(
n, lm->intfs, ({
const vnet_hw_interface_t *hw =
vnet_get_hw_interface(vnm, n->hw_if_index);
const vnet_sw_interface_t *sw =
vnet_get_sw_interface(lm->vnet_main, hw->sw_if_index);
/* Interface shutdown */
if (!(sw->flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP))
continue;
if (now < n->last_heard + n->ttl)
{
s = format(s, "%-25s %-25U %-25U %=15U %=15U %=10s\n", hw->name,
format_lldp_chassis_id, n->chassis_id_subtype,
n->chassis_id, vec_len(n->chassis_id), 0,
format_lldp_port_id, n->port_id_subtype, n->port_id,
vec_len(n->port_id), 0, format_time_ago, n->last_heard,
now, format_time_ago, n->last_sent, now, "active");
}
else
{
s = format(s, "%-25s %-25s %-25s %=15U %=15U %=10s\n", hw->name,
"", "", format_time_ago, n->last_heard, now,
format_time_ago, n->last_sent, now, "inactive");
}
}));
/* *INDENT-ON* */
return s;
}
static clib_error_t *
show_lldp (vlib_main_t * vm, unformat_input_t * input,
CLIB_UNUSED (vlib_cli_command_t * lmd))
{
lldp_main_t *lm = &lldp_main;
if (unformat (input, "detail"))
{
vlib_cli_output (vm, "%U\n", format_lldp_intfs, vm, lm, 1);
}
else
{
vlib_cli_output (vm, "%U\n", format_lldp_intfs, vm, lm, 0);
}
return 0;
}
/* *INDENT-OFF* */
VLIB_CLI_COMMAND(show_lldp_command, static) = {
.path = "show lldp",
.short_help = "show lldp [detail]",
.function = show_lldp,
};
/* *INDENT-ON* */
/*
* packet trace format function, very similar to
* lldp_packet_scan except that we call the per TLV format
* functions instead of the per TLV processing functions
*/
u8 *
lldp_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 *);
const lldp_input_trace_t *t = va_arg (*args, lldp_input_trace_t *);
const u8 *cur;
const lldp_tlv_t *tlv;
cur = t->data;
while (((cur + lldp_tlv_get_length ((lldp_tlv_t *) cur)) <
t->data + t->len))
{
tlv = (lldp_tlv_t *) cur;
if (cur == t->data)
{
s = format (s, "TLV #%d(%s): %U\n", lldp_tlv_get_code (tlv),
lldp_tlv_code_str (lldp_tlv_get_code (tlv)),
format_lldp_tlv, tlv);
}
else
{
s = format (s, " TLV #%d(%s): %U\n", lldp_tlv_get_code (tlv),
lldp_tlv_code_str (lldp_tlv_get_code (tlv)),
format_lldp_tlv, tlv);
}
cur += STRUCT_SIZE_OF (lldp_tlv_t, head) + lldp_tlv_get_length (tlv);
}
return s;
}
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/