/* *------------------------------------------------------------------ * 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 <stddef.h> #include <vnet/ip6-nd/ip6_nd.h> #include <vnet/ip6-nd/ip6_ra.h> #include <vnet/fib/fib_table.h> #include <vnet/ip/ip_types_api.h> #include <vpp/app/version.h> #include <vlibapi/api.h> #include <vlibmemory/api.h> /* define message IDs */ #include <vnet/format_fns.h> #include <vnet/ip6-nd/ip6_nd.api_enum.h> #include <vnet/ip6-nd/ip6_nd.api_types.h> /** * Base message ID fot the plugin */ static u32 ip6_nd_base_msg_id; #define REPLY_MSG_ID_BASE ip6_nd_base_msg_id #include <vlibapi/api_helper_macros.h> static void send_ip6nd_proxy_details (vl_api_registration_t * reg, u32 context, const ip46_address_t * addr, u32 sw_if_index) { vl_api_ip6nd_proxy_details_t *mp; mp = vl_msg_api_alloc (sizeof (*mp)); clib_memset (mp, 0, sizeof (*mp)); mp->_vl_msg_id = ntohs (VL_API_IP6ND_PROXY_DETAILS); mp->context = context; mp->sw_if_index = htonl (sw_if_index); ip6_address_encode (&addr->ip6, mp->ip); vl_api_send_msg (reg, (u8 *) mp); } typedef struct api_ip6nd_proxy_fib_table_walk_ctx_t_ { u32 *indices; } api_ip6nd_proxy_fib_table_walk_ctx_t; static fib_table_walk_rc_t api_ip6nd_proxy_fib_table_walk (fib_node_index_t fei, void *arg) { api_ip6nd_proxy_fib_table_walk_ctx_t *ctx = arg; if (fib_entry_is_sourced (fei, FIB_SOURCE_IP6_ND_PROXY)) { vec_add1 (ctx->indices, fei); } return (FIB_TABLE_WALK_CONTINUE); } static void vl_api_ip6nd_proxy_dump_t_handler (vl_api_ip6nd_proxy_dump_t * mp) { ip6_main_t *im6 = &ip6_main; fib_table_t *fib_table; api_ip6nd_proxy_fib_table_walk_ctx_t ctx = { .indices = NULL, }; fib_node_index_t *feip; const fib_prefix_t *pfx; vl_api_registration_t *reg; reg = vl_api_client_index_to_registration (mp->client_index); if (!reg) return; /* *INDENT-OFF* */ pool_foreach (fib_table, im6->fibs, ({ fib_table_walk(fib_table->ft_index, FIB_PROTOCOL_IP6, api_ip6nd_proxy_fib_table_walk, &ctx); })); /* *INDENT-ON* */ vec_sort_with_function (ctx.indices, fib_entry_cmp_for_sort); vec_foreach (feip, ctx.indices) { pfx = fib_entry_get_prefix (*feip); send_ip6nd_proxy_details (reg, mp->context, &pfx->fp_addr, fib_entry_get_resolving_interface (*feip)); } vec_free (ctx.indices); } static void vl_api_ip6nd_proxy_add_del_t_handler (vl_api_ip6nd_proxy_add_del_t * mp) { vl_api_ip6nd_proxy_add_del_reply_t *rmp; ip6_address_t ip6; int rv = 0; VALIDATE_SW_IF_INDEX (mp); ip6_address_decode (mp->ip, &ip6); if (mp->is_add) rv = ip6_nd_proxy_add (ntohl (mp->sw_if_index), &ip6); else rv = ip6_nd_proxy_del (ntohl (mp->sw_if_index), &ip6); BAD_SW_IF_INDEX_LABEL; REPLY_MACRO (VL_API_IP6ND_PROXY_ADD_DEL_REPLY); } static void vl_api_sw_interface_ip6nd_ra_config_t_handler (vl_api_sw_interface_ip6nd_ra_config_t * mp) { vl_api_sw_interface_ip6nd_ra_config_reply_t *rmp; vlib_main_t *vm = vlib_get_main (); int rv = 0; u8 is_no, suppress, managed, other, ll_option, send_unicast, cease, default_router; is_no = mp->is_no == 1; suppress = mp->suppress == 1; managed = mp->managed == 1; other = mp->other == 1; ll_option = mp->ll_option == 1; send_unicast = mp->send_unicast == 1; cease = mp->cease == 1; default_router = mp->default_router == 1; VALIDATE_SW_IF_INDEX (mp); rv = ip6_ra_config (vm, ntohl (mp->sw_if_index), suppress, managed, other, ll_option, send_unicast, cease, default_router, ntohl (mp->lifetime), ntohl (mp->initial_count), ntohl (mp->initial_interval), ntohl (mp->max_interval), ntohl (mp->min_interval), is_no); BAD_SW_IF_INDEX_LABEL; REPLY_MACRO (VL_API_SW_INTERFACE_IP6ND_RA_CONFIG_REPLY); } static void vl_api_sw_interface_ip6nd_ra_prefix_t_handler (vl_api_sw_interface_ip6nd_ra_prefix_t * mp) { vlib_main_t *vm = vlib_get_main (); vl_api_sw_interface_ip6nd_ra_prefix_reply_t *rmp; fib_prefix_t pfx; int rv = 0; u8 is_no, use_default, no_advertise, off_link, no_autoconfig, no_onlink; VALIDATE_SW_IF_INDEX (mp); ip_prefix_decode (&mp->prefix, &pfx); is_no = mp->is_no == 1; use_default = mp->use_default == 1; no_advertise = mp->no_advertise == 1; off_link = mp->off_link == 1; no_autoconfig = mp->no_autoconfig == 1; no_onlink = mp->no_onlink == 1; rv = ip6_ra_prefix (vm, ntohl (mp->sw_if_index), &pfx.fp_addr.ip6, pfx.fp_len, use_default, ntohl (mp->val_lifetime), ntohl (mp->pref_lifetime), no_advertise, off_link, no_autoconfig, no_onlink, is_no); BAD_SW_IF_INDEX_LABEL; REPLY_MACRO (VL_API_SW_INTERFACE_IP6ND_RA_PREFIX_REPLY); } static void vl_api_ip6nd_send_router_solicitation_t_handler (vl_api_ip6nd_send_router_solicitation_t * mp) { vl_api_ip6nd_send_router_solicitation_reply_t *rmp; icmp6_send_router_solicitation_params_t params; vlib_main_t *vm = vlib_get_main (); int rv = 0; VALIDATE_SW_IF_INDEX (mp); BAD_SW_IF_INDEX_LABEL; REPLY_MACRO (VL_API_IP6ND_SEND_ROUTER_SOLICITATION_REPLY); if (rv != 0) return; params.irt = ntohl (mp->irt); params.mrt = ntohl (mp->mrt); params.mrc = ntohl (mp->mrc); params.mrd = ntohl (mp->mrd); icmp6_send_router_solicitation (vm, ntohl (mp->sw_if_index), mp->stop, ¶ms); } static void ip6_ra_handle_report (const ip6_ra_report_t * rap) { /* *INDENT-OFF* */ vpe_client_registration_t *rp; pool_foreach(rp, vpe_api_main.ip6_ra_events_registrations, ({ vl_api_registration_t *vl_reg; vl_reg = vl_api_client_index_to_registration (rp->client_index); if (vl_reg && vl_api_can_send_msg (vl_reg)) { vl_api_ip6_ra_prefix_info_t *prefix; vl_api_ip6_ra_event_t *event; u32 event_size = (sizeof (vl_api_ip6_ra_event_t) + vec_len (rap->prefixes) * sizeof (vl_api_ip6_ra_prefix_info_t)); event = vl_msg_api_alloc_zero (event_size); event->_vl_msg_id = htons (VL_API_IP6_RA_EVENT + REPLY_MSG_ID_BASE); event->client_index = rp->client_index; event->pid = rp->client_pid; event->sw_if_index = clib_host_to_net_u32 (rap->sw_if_index); ip6_address_encode (&rap->router_address, event->router_addr); event->current_hop_limit = rap->current_hop_limit; event->flags = rap->flags; event->router_lifetime_in_sec = clib_host_to_net_u16 (rap->router_lifetime_in_sec); event->neighbor_reachable_time_in_msec = clib_host_to_net_u32 (rap->neighbor_reachable_time_in_msec); event->time_in_msec_between_retransmitted_neighbor_solicitations = clib_host_to_net_u32 (rap->time_in_msec_between_retransmitted_neighbor_solicitations); event->n_prefixes = clib_host_to_net_u32 (vec_len (rap->prefixes)); prefix = event->prefixes; // (typeof (prefix)) event->prefixes; u32 j; for (j = 0; j < vec_len (rap->prefixes); j++) { ra_report_prefix_info_t *info = &rap->prefixes[j]; ip_prefix_encode(&info->prefix, &prefix->prefix); prefix->flags = info->flags; prefix->valid_time = clib_host_to_net_u32 (info->valid_time); prefix->preferred_time = clib_host_to_net_u32 (info->preferred_time); prefix++; } vl_api_send_msg (vl_reg, (u8 *) event); } })); /* *INDENT-ON* */ } static void vl_api_want_ip6_ra_events_t_handler (vl_api_want_ip6_ra_events_t * mp) { vpe_api_main_t *am = &vpe_api_main; vl_api_want_ip6_ra_events_reply_t *rmp; int rv = 0, had_reg, have_reg; had_reg = hash_elts (am->ip6_ra_events_registration_hash); uword *p = hash_get (am->ip6_ra_events_registration_hash, mp->client_index); vpe_client_registration_t *rp; if (p) { if (mp->enable) { clib_warning ("pid %d: already enabled...", ntohl (mp->pid)); rv = VNET_API_ERROR_INVALID_REGISTRATION; goto reply; } else { rp = pool_elt_at_index (am->ip6_ra_events_registrations, p[0]); pool_put (am->ip6_ra_events_registrations, rp); hash_unset (am->ip6_ra_events_registration_hash, mp->client_index); goto reply; } } if (mp->enable == 0) { clib_warning ("pid %d: already disabled...", ntohl (mp->pid)); rv = VNET_API_ERROR_INVALID_REGISTRATION; goto reply; } pool_get (am->ip6_ra_events_registrations, rp); rp->client_index = mp->client_index; rp->client_pid = ntohl (mp->pid); hash_set (am->ip6_ra_events_registration_hash, rp->client_index, rp - am->ip6_ra_events_registrations); reply: have_reg = hash_elts (am->ip6_ra_events_registration_hash); if (!had_reg && have_reg) ip6_ra_report_register (ip6_ra_handle_report); else if (had_reg && !have_reg) ip6_ra_report_unregister (ip6_ra_handle_report); REPLY_MACRO (VL_API_WANT_IP6_RA_EVENTS_REPLY); } static clib_error_t * want_ip6_ra_events_reaper (u32 client_index) { vpe_api_main_t *am = &vpe_api_main; vpe_client_registration_t *rp; uword *p; p = hash_get (am->ip6_ra_events_registration_hash, client_index); if (p) { rp = pool_elt_at_index (am->ip6_ra_events_registrations, p[0]); pool_put (am->ip6_ra_events_registrations, rp); hash_unset (am->ip6_ra_events_registration_hash, client_index); } return (NULL); } VL_MSG_API_REAPER_FUNCTION (want_ip6_ra_events_reaper); #include <vnet/ip6-nd/ip6_nd.api.c> static clib_error_t * ip6_nd_api_init (vlib_main_t * vm) { /* Ask for a correctly-sized block of API message decode slots */ ip6_nd_base_msg_id = setup_message_id_table (); return 0; } VLIB_INIT_FUNCTION (ip6_nd_api_init); /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */