/* *------------------------------------------------------------------ * ip_api.c - vnet ip api * * Copyright (c) 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. *------------------------------------------------------------------ */ #include #include #include #include #include #include #include #include #include static u16 msg_id_base; #define REPLY_MSG_ID_BASE msg_id_base #include #include static vl_api_ip_neighbor_flags_t ip_neighbor_flags_encode (ip_neighbor_flags_t f) { vl_api_ip_neighbor_flags_t v = IP_API_NEIGHBOR_FLAG_NONE; if (f & IP_NEIGHBOR_FLAG_STATIC) v |= IP_API_NEIGHBOR_FLAG_STATIC; if (f & IP_NEIGHBOR_FLAG_NO_FIB_ENTRY) v |= IP_API_NEIGHBOR_FLAG_NO_FIB_ENTRY; return (v); } static void ip_neighbor_encode (vl_api_ip_neighbor_t * api, const ip_neighbor_t * ipn) { api->sw_if_index = htonl (ipn->ipn_key->ipnk_sw_if_index); api->flags = ip_neighbor_flags_encode (ipn->ipn_flags); ip_address_encode2 (&ipn->ipn_key->ipnk_ip, &api->ip_address); mac_address_encode (&ipn->ipn_mac, api->mac_address); } void ip_neighbor_handle_event (ip_neighbor_event_t * ipne) { vl_api_registration_t *reg; ip_neighbor_t *ipn; ipn = &ipne->ipne_nbr; if (NULL == ipn) /* Client can cancel, die, etc. */ return; /* Customer(s) requesting event for this neighbor */ reg = vl_api_client_index_to_registration (ipne->ipne_watch.ipw_client); if (!reg) return; if (vl_api_can_send_msg (reg)) { if (1 == ipne->ipne_watch.ipw_api_version) { vl_api_ip_neighbor_event_t *mp; mp = vl_msg_api_alloc (sizeof (*mp)); clib_memset (mp, 0, sizeof (*mp)); mp->_vl_msg_id = ntohs (VL_API_IP_NEIGHBOR_EVENT + REPLY_MSG_ID_BASE); mp->client_index = ipne->ipne_watch.ipw_client; mp->pid = ipne->ipne_watch.ipw_pid; ip_neighbor_encode (&mp->neighbor, ipn); vl_api_send_msg (reg, (u8 *) mp); } else if (2 == ipne->ipne_watch.ipw_api_version) { vl_api_ip_neighbor_event_v2_t *mp; mp = vl_msg_api_alloc (sizeof (*mp)); clib_memset (mp, 0, sizeof (*mp)); mp->_vl_msg_id = ntohs (VL_API_IP_NEIGHBOR_EVENT_V2 + REPLY_MSG_ID_BASE); mp->client_index = ipne->ipne_watch.ipw_client; mp->pid = ipne->ipne_watch.ipw_pid; mp->flags = clib_host_to_net_u32 (ipne->ipne_flags); ip_neighbor_encode (&mp->neighbor, ipn); vl_api_send_msg (reg, (u8 *) mp); } } else { static f64 last_time; /* * Throttle syslog msgs. * It's pretty tempting to just revoke the registration... */ if (vlib_time_now (vlib_get_main ()) > last_time + 10.0) { clib_warning ("neighbor event for %U to pid %d: queue stuffed!", format_ip_address, &ipn->ipn_key->ipnk_ip, ipne->ipne_watch.ipw_pid); last_time = vlib_time_now (vlib_get_main ()); } } ip_neighbor_free (ipn); } typedef struct ip_neighbor_dump_ctx_t_ { vl_api_registration_t *reg; u32 context; } ip_neighbor_dump_ctx_t; static walk_rc_t send_ip_neighbor_details (index_t ipni, void *arg) { ip_neighbor_dump_ctx_t *ctx = arg; vl_api_ip_neighbor_details_t *mp; ip_neighbor_t *ipn; ipn = ip_neighbor_get (ipni); mp = vl_msg_api_alloc (sizeof (*mp)); clib_memset (mp, 0, sizeof (*mp)); mp->_vl_msg_id = ntohs (VL_API_IP_NEIGHBOR_DETAILS + REPLY_MSG_ID_BASE); mp->context = ctx->context; mp->age = clib_host_to_net_f64 ((vlib_time_now (vlib_get_main ()) - ipn->ipn_time_last_updated)); ip_neighbor_encode (&mp->neighbor, ipn); vl_api_send_msg (ctx->reg, (u8 *) mp); return (WALK_CONTINUE); } static void vl_api_ip_neighbor_dump_t_handler (vl_api_ip_neighbor_dump_t * mp) { vl_api_registration_t *reg; ip_address_family_t af; int rv; reg = vl_api_client_index_to_registration (mp->client_index); if (!reg) return; u32 sw_if_index = ntohl (mp->sw_if_index); rv = ip_address_family_decode (mp->af, &af); if (rv) return; ip_neighbor_dump_ctx_t ctx = { .reg = reg, .context = mp->context, }; // walk all neighbours on all interfaces ip_neighbor_walk (af, sw_if_index, send_ip_neighbor_details, &ctx); } static ip_neighbor_flags_t ip_neighbor_flags_decode (vl_api_ip_neighbor_flags_t v) { ip_neighbor_flags_t f = IP_NEIGHBOR_FLAG_NONE; if (v & IP_API_NEIGHBOR_FLAG_STATIC) f |= IP_NEIGHBOR_FLAG_STATIC; if (v & IP_API_NEIGHBOR_FLAG_NO_FIB_ENTRY) f |= IP_NEIGHBOR_FLAG_NO_FIB_ENTRY; return (f); } static void vl_api_ip_neighbor_add_del_t_handler (vl_api_ip_neighbor_add_del_t * mp,