/* * Copyright (c) 2018-2019 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 <vnet/vnet.h> #include <vlibmemory/api.h> #include <vnet/udp/udp_local.h> #include <vnet/udp/udp_encap.h> #include <vnet/fib/fib_table.h> #include <vnet/ip/ip_types_api.h> #include <vnet/udp/udp.h> #include <vnet/format_fns.h> #include <vnet/udp/udp.api_enum.h> #include <vnet/udp/udp.api_types.h> #define REPLY_MSG_ID_BASE udp_main.msg_id_base #include <vlibapi/api_helper_macros.h> static void send_udp_encap_details (const udp_encap_t * ue, vl_api_registration_t * reg, u32 context) { vl_api_udp_encap_details_t *mp; mp = vl_msg_api_alloc (sizeof (*mp)); clib_memset (mp, 0, sizeof (*mp)); mp->_vl_msg_id = ntohs (REPLY_MSG_ID_BASE + VL_API_UDP_ENCAP_DETAILS); mp->context = context; if (FIB_PROTOCOL_IP4 == ue->ue_ip_proto) { clib_memcpy (&mp->udp_encap.src_ip.un.ip4, &ue->ue_hdrs.ip4.ue_ip4.src_address, 4); clib_memcpy (&mp->udp_encap.dst_ip.un.ip4, &ue->ue_hdrs.ip4.ue_ip4.dst_address, 4); mp->udp_encap.dst_ip.af = ip_address_family_encode (AF_IP4); mp->udp_encap.src_ip.af = ip_address_family_encode (AF_IP4); /* ports aren't byte swapped because they are stored in network * byte order */ mp->udp_encap.src_port = ue->ue_hdrs.ip4.ue_udp.src_port; mp->udp_encap.dst_port = ue->ue_hdrs.ip4.ue_udp.dst_port; } else { clib_memcpy (&mp->udp_encap.src_ip.un.ip6, &ue->ue_hdrs.ip6.ue_ip6.src_address, 16); clib_memcpy (&mp->udp_encap.dst_ip.un.ip6, &ue->ue_hdrs.ip6.ue_ip6.dst_address, 16); mp->udp_encap.dst_ip.af = ip_address_family_encode (AF_IP6); mp->udp_encap.src_ip.af = ip_address_family_encode (AF_IP6); /* ports aren't byte swapped because they are stored in network * byte order */ mp->udp_encap.src_port = ue->ue_hdrs.ip6.ue_udp.src_port; mp->udp_encap.dst_port = ue->ue_hdrs.ip6.ue_udp.dst_port; } mp->udp_encap.table_id = htonl (fib_table_get_table_id (ue->ue_fib_index, ue->ue_ip_proto)); mp->udp_encap.id = htonl (ue - udp_encap_pool); vl_api_send_msg (reg, (u8 *) mp); } static void vl_api_udp_encap_dump_t_handler (vl_api_udp_encap_dump_t *mp) { vl_api_registration_t *reg; udp_encap_t *ue; reg = vl_api_client_index_to_registration (mp->client_index); if (!reg) return; /* *INDENT-OFF* */ pool_foreach (ue, udp_encap_pool) { send_udp_encap_details(ue, reg, mp->context); } /* *INDENT-ON* */ } static void vl_api_udp_encap_add_t_handler (vl_api_udp_encap_add_t *mp) { vl_api_udp_encap_add_reply_t *rmp; ip46_address_t src_ip, dst_ip; u32 fib_index, table_id; fib_protocol_t fproto; ip46_type_t itype; index_t uei; int rv = 0; uei = INDEX_INVALID; table_id = ntohl (mp->udp_encap.table_id); itype = ip_address_decode (&mp->udp_encap.src_ip, &src_ip); itype = ip_address_decode (&mp->udp_encap.dst_ip, &dst_ip); fproto = fib_proto_from_ip46 (itype); fib_index = fib_table_find (fproto, table_id); if (~0 == fib_index) { rv = VNET_API_ERROR_NO_SUCH_TABLE; goto done; } uei = udp_encap_add_and_lock (fproto, fib_index, &src_ip, &dst_ip, ntohs (mp->udp_encap.src_port), ntohs (mp->udp_encap.dst_port), UDP_ENCAP_FIXUP_NONE); done: /* *INDENT-OFF* */ REPLY_MACRO2 (VL_API_UDP_ENCAP_ADD_REPLY, ({ rmp->id = ntohl (uei); })); /* *INDENT-ON* */ } static void vl_api_udp_encap_del_t_handler (vl_api_udp_encap_del_t *mp) { vl_api_udp_encap_del_reply_t *rmp; int rv = 0; udp_encap_unlock (ntohl (mp->id)); REPLY_MACRO (VL_API_UDP_ENCAP_DEL_REPLY); } u32 udp_api_decap_proto_to_index (vlib_main_t *vm, vl_api_udp_decap_next_proto_t iproto) { switch (iproto) { case UDP_API_DECAP_PROTO_IP4: return vlib_get_node_by_name (vm, (u8 *) "ip4-input")->index; case UDP_API_DECAP_PROTO_IP6: return vlib_get_node_by_name (vm, (u8 *) "ip6-input")->index; case UDP_API_DECAP_PROTO_MPLS: return vlib_get_node_by_name (vm, (u8 *) "mpls-input")->index; } return ~0; } static void vl_api_udp_decap_add_del_t_handler (vl_api_udp_decap_add_del_t *mp) { vl_api_udp_decap_add_del_reply_t *rmp; vlib_main_t *vm = vlib_get_main (); int rv = 0; if (mp->is_add) { u32 node_index = udp_api_decap_proto_to_index (vm, ntohl (mp->udp_decap.next_proto)); if (node_index == ~0) rv = VNET_API_ERROR_INVALID_PROTOCOL; else udp_register_dst_port (vm, ntohs (mp->udp_decap.port), node_index, mp->udp_decap.is_ip4); } else udp_unregister_dst_port (vm, ntohs (mp->udp_decap.port), mp->udp_decap.is_ip4); REPLY_MACRO (VL_API_UDP_DECAP_ADD_DEL_REPLY); } #include <vnet/udp/udp.api.c> static clib_error_t * udp_api_hookup (vlib_main_t * vm) { /* * Set up the (msg_name, crc, message-id) table */ REPLY_MSG_ID_BASE = setup_message_id_table (); return 0; } VLIB_API_INIT_FUNCTION (udp_api_hookup); /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */