--- /dev/null
+/*
+ * 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 = ðernet_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
+ {
+ ret = clib_error_return (0, "unknown input `%U'",
+ format_unformat_error, input);
+ goto out;
+ }
+ }
+ 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:
+ */
Code Review / vpp.git / blobdiff