ietf: renamed mlrsearch to bmwg adopted draft - csit

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author	Maciek Konstantynowicz <mkonstan@cisco.com>	2021-02-22 14:23:26 +0000
committer	Vratko Polak <vrpolak@cisco.com>	2021-02-22 15:47:13 +0000
commit	2fd44c944915a159c27ec547e6dadb1f8e09a486 (patch)
tree	ff5f24dbdc19d86ee2023776367e08b9adab4900 /docs
parent	a6099b75decfe8bf84cebecd3989d249b2ca1189 (diff)

ietf: renamed mlrsearch to bmwg adopted draft

Change-Id: I86401078e63c01a88b606f27bfbbd17491de99fd Signed-off-by: Maciek Konstantynowicz <mkonstan@cisco.com>

Diffstat (limited to 'docs')

-rw-r--r--

docs/ietf/draft-ietf-bmwg-mlrsearch-00.md (renamed from docs/ietf/draft-vpolak-mkonstan-bmwg-mlrsearch-03.md)

1 files changed, 2 insertions, 2 deletions

/* * 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 packet generation implementation */ #include <vnet/lldp/lldp_node.h> static void lldp_build_mgmt_addr_tlv (u8 ** t0p, u8 subtype, u8 addr_len, u8 * addr, u32 if_index, u8 oid_len, u8 * oid) { lldp_tlv_t *t = (lldp_tlv_t *) * t0p; lldp_tlv_set_code (t, LLDP_TLV_NAME (mgmt_addr)); t->v[0] = addr_len + 1; /* address string length */ t->v[1] = subtype; /* address subtype */ clib_memcpy_fast (&(t->v[2]), addr, addr_len); /* address */ t->v[addr_len + 2] = 2; /* interface numbering subtype: ifIndex */ t->v[addr_len + 3] = (if_index >> 24) & 0xFF; /* interface number */ t->v[addr_len + 4] = (if_index >> 16) & 0xFF; t->v[addr_len + 5] = (if_index >> 8) & 0xFF; t->v[addr_len + 6] = (if_index >> 0) & 0xFF; t->v[addr_len + 7] = oid_len; /* OID string length */ if (oid_len > 0) clib_memcpy_fast ((u8 *) & (t->v[addr_len + 8]), oid, oid_len); lldp_tlv_set_length (t, addr_len + oid_len + 8); *t0p += STRUCT_SIZE_OF (lldp_tlv_t, head) + addr_len + oid_len + 8; } static void lldp_add_chassis_id (const vnet_hw_interface_t * hw, u8 ** t0p) { lldp_chassis_id_tlv_t *t = (lldp_chassis_id_tlv_t *) * t0p; lldp_tlv_set_code ((lldp_tlv_t *) t, LLDP_TLV_NAME (chassis_id)); t->subtype = LLDP_CHASS_ID_SUBTYPE_NAME (mac_addr); const size_t addr_len = 6; clib_memcpy_fast (&t->id, hw->hw_address, addr_len); const size_t len = STRUCT_SIZE_OF (lldp_chassis_id_tlv_t, subtype) + addr_len; lldp_tlv_set_length ((lldp_tlv_t *) t, len); *t0p += STRUCT_SIZE_OF (lldp_tlv_t, head) + len; } static void lldp_add_port_id (const vnet_hw_interface_t * hw, u8 ** t0p) { lldp_port_id_tlv_t *t = (lldp_port_id_tlv_t *) * t0p; lldp_tlv_set_code ((lldp_tlv_t *) t, LLDP_TLV_NAME (port_id)); t->subtype = LLDP_PORT_ID_SUBTYPE_NAME (intf_name); const size_t name_len = vec_len (hw->name); clib_memcpy_fast (&t->id, hw->name, name_len); const size_t len = STRUCT_SIZE_OF (lldp_port_id_tlv_t, subtype) + name_len; lldp_tlv_set_length ((lldp_tlv_t *) t, len); *t0p += STRUCT_SIZE_OF (lldp_tlv_t, head) + len; } static void lldp_add_ttl (const lldp_main_t * lm, u8 ** t0p, int shutdown) { lldp_ttl_tlv_t *t = (lldp_ttl_tlv_t *) * t0p; lldp_tlv_set_code ((lldp_tlv_t *) t, LLDP_TLV_NAME (ttl)); if (shutdown) { t->ttl = 0; } else { if ((size_t) lm->msg_tx_interval * lm->msg_tx_hold + 1 > (1 << 16) - 1) { t->ttl = htons ((1 << 16) - 1); } else { t->ttl = htons (lm->msg_tx_hold * lm->msg_tx_interval + 1); } } const size_t len = STRUCT_SIZE_OF (lldp_ttl_tlv_t, ttl); lldp_tlv_set_length ((lldp_tlv_t *) t, len); *t0p += STRUCT_SIZE_OF (lldp_tlv_t, head) + len; } static void lldp_add_port_desc (const lldp_main_t * lm, lldp_intf_t * n, u8 ** t0p) { const size_t len = vec_len (n->port_desc); if (len) { lldp_tlv_t *t = (lldp_tlv_t *) * t0p; lldp_tlv_set_code (t, LLDP_TLV_NAME (port_desc)); lldp_tlv_set_length (t, len); clib_memcpy_fast (t->v, n->port_desc, len); *t0p += STRUCT_SIZE_OF (lldp_tlv_t, head) + len; } } static void lldp_add_sys_name (const lldp_main_t * lm, u8 ** t0p) { const size_t len = vec_len (lm->sys_name); if (len) { lldp_tlv_t *t = (lldp_tlv_t *) * t0p; lldp_tlv_set_code (t, LLDP_TLV_NAME (sys_name)); lldp_tlv_set_length (t, len); clib_memcpy_fast (t->v, lm->sys_name, len); *t0p += STRUCT_SIZE_OF (lldp_tlv_t, head) + len; } } static void lldp_add_mgmt_addr (const lldp_intf_t * n, const vnet_hw_interface_t * hw, u8 ** t0p) { const size_t len_ip4 = vec_len (n->mgmt_ip4); const size_t len_ip6 = vec_len (n->mgmt_ip6); if (!(len_ip4 | len_ip6)) { /* If no management address is configured, the interface port's MAC address is sent in one TLV. */ lldp_build_mgmt_addr_tlv (t0p, 1, /* address subtype: Ipv4 */ 6, /* address string length */ hw->hw_address, /* address */ hw->hw_if_index, /* if index */ vec_len (n->mgmt_oid), /* OID length */ n->mgmt_oid); /* OID */ return; } if (len_ip4) { lldp_build_mgmt_addr_tlv (t0p, 1, /* address subtype: Ipv4 */ len_ip4, /* address string length */ n->mgmt_ip4, /* address */ hw->hw_if_index, /* if index */ vec_len (n->mgmt_oid), /* OID length */ n->mgmt_oid); /* OID */ } if (len_ip6) { lldp_build_mgmt_addr_tlv (t0p, 2, /* address subtype: Ipv6 */ len_ip6, /* address string length */ n->mgmt_ip6, /* address */ hw->hw_if_index, /* if index */ vec_len (n->mgmt_oid), /* OID length */ n->mgmt_oid); /* OID */ } } static void lldp_add_pdu_end (u8 ** t0p) { lldp_tlv_t *t = (lldp_tlv_t *) * t0p; lldp_tlv_set_code (t, LLDP_TLV_NAME (pdu_end)); lldp_tlv_set_length (t, 0); *t0p += STRUCT_SIZE_OF (lldp_tlv_t, head); } static void lldp_add_tlvs (lldp_main_t * lm, vnet_hw_interface_t * hw, u8 ** t0p, int shutdown, lldp_intf_t * n) { lldp_add_chassis_id (hw, t0p); lldp_add_port_id (hw, t0p); lldp_add_ttl (lm, t0p, shutdown); lldp_add_port_desc (lm, n, t0p); lldp_add_sys_name (lm, t0p); lldp_add_mgmt_addr (n, hw, t0p); lldp_add_pdu_end (t0p); } /* * send a lldp pkt on an ethernet interface */ void lldp_send_ethernet (lldp_main_t * lm, lldp_intf_t * n, int shutdown) { u32 *to_next; ethernet_header_t *h0; vnet_hw_interface_t *hw; u32 bi0; vlib_buffer_t *b0; u8 *t0; vlib_frame_t *f; vlib_main_t *vm = lm->vlib_main; vnet_main_t *vnm = lm->vnet_main; /* * see lldp_template_init() to understand what's already painted * into the buffer by the packet template mechanism */ h0 = vlib_packet_template_get_packet (vm, &lm->packet_template, &bi0); if (!h0) return; /* Add the interface's ethernet source address */ hw = vnet_get_hw_interface (vnm, n->hw_if_index); clib_memcpy_fast (h0->src_address, hw->hw_address, vec_len (hw->hw_address)); u8 *data = ((u8 *) h0) + sizeof (*h0); t0 = data; /* add TLVs */ lldp_add_tlvs (lm, hw, &t0, shutdown, n); /* Set the outbound packet length */ b0 = vlib_get_buffer (vm, bi0); b0->current_length = sizeof (*h0) + t0 - data; /* And the outbound interface */ vnet_buffer (b0)->sw_if_index[VLIB_TX] = hw->sw_if_index; /* 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); } void lldp_delete_intf (lldp_main_t * lm, lldp_intf_t * n) { if (n) { lldp_unschedule_intf (lm, n); hash_unset (lm->intf_by_hw_if_index, n->hw_if_index); vec_free (n->chassis_id); vec_free (n->port_id); vec_free (n->port_desc); vec_free (n->mgmt_ip4); vec_free (n->mgmt_ip6); vec_free (n->mgmt_oid); pool_put (lm->intfs, n); } } static clib_error_t * lldp_template_init (vlib_main_t * vm) { lldp_main_t *lm = &lldp_main; /* Create the ethernet lldp packet template */ { ethernet_header_t h; clib_memset (&h, 0, sizeof (h)); /* * Send to 01:80:C2:00:00:0E - propagation constrained to a single * physical link - stopped by all type of bridge */ h.dst_address[0] = 0x01; h.dst_address[1] = 0x80; h.dst_address[2] = 0xC2; /* h.dst_address[3] = 0x00; (clib_memset) */ /* h.dst_address[4] = 0x00; (clib_memset) */ h.dst_address[5] = 0x0E; /* leave src address blank (fill in at send time) */ h.type = htons (ETHERNET_TYPE_802_1_LLDP); vlib_packet_template_init (vm, &lm->packet_template, /* data */ &h, sizeof (h), /* alloc chunk size */ 8, "lldp-ethernet"); } return 0; } VLIB_INIT_FUNCTION (lldp_template_init); /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */


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