diff options
author | Neale Ranns <nranns@cisco.com> | 2020-09-18 12:58:40 +0000 |
---|---|---|
committer | Ole Tr�an <otroan@employees.org> | 2020-09-21 15:34:56 +0000 |
commit | 3f9fdd98463bd926fc78a2b366875c929058e2db (patch) | |
tree | a38c26372ed7b1a433afbacf05e686044f1cf583 /src/vnet/lldp/lldp_output.c | |
parent | 4b1b13315a3c532d45fb41cc3ce34a48ad72a757 (diff) |
lldp: Move to plugin
Type: refactor
Change-Id: Ifd770ff4850e63474bf4682ad463021b03786b4b
Signed-off-by: Neale Ranns <nranns@cisco.com>
Diffstat (limited to 'src/vnet/lldp/lldp_output.c')
-rw-r--r-- | src/vnet/lldp/lldp_output.c | 308 |
1 files changed, 0 insertions, 308 deletions
diff --git a/src/vnet/lldp/lldp_output.c b/src/vnet/lldp/lldp_output.c deleted file mode 100644 index 9c171c5da7b..00000000000 --- a/src/vnet/lldp/lldp_output.c +++ /dev/null @@ -1,308 +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_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: - */ |