diff options
Diffstat (limited to 'vnet/vnet/lldp/lldp_output.c')
| -rw-r--r-- | vnet/vnet/lldp/lldp_output.c | 216 |
1 files changed, 0 insertions, 216 deletions
diff --git a/vnet/vnet/lldp/lldp_output.c b/vnet/vnet/lldp/lldp_output.c deleted file mode 100644 index 6cb2627098b..00000000000 --- a/vnet/vnet/lldp/lldp_output.c +++ /dev/null @@ -1,216 +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. - */ -/** - * @file - * @brief LLDP packet generation implementation - */ -#include <vnet/lldp/lldp_node.h> - -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 (&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 (&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_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 (t->v, lm->sys_name, len); - *t0p += STRUCT_SIZE_OF (lldp_tlv_t, head) + len; - } -} - -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_add_chassis_id (hw, t0p); - lldp_add_port_id (hw, t0p); - lldp_add_ttl (lm, t0p, shutdown); - lldp_add_sys_name (lm, 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); - - /* Add the interface's ethernet source address */ - hw = vnet_get_hw_interface (vnm, n->hw_if_index); - - clib_memcpy (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); - - /* 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); - 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; - - 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; (memset) */ - /* h.dst_address[4] = 0x00; (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: - */ |