/* *------------------------------------------------------------------ * gre_api.c - gre 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 <vnet/vnet.h> #include <vlibmemory/api.h> #include <vnet/interface.h> #include <vnet/api_errno.h> #include <gre/gre.h> #include <vnet/fib/fib_table.h> #include <vnet/tunnel/tunnel_types_api.h> #include <vnet/ip/ip_types_api.h> #include <gre/gre.api_enum.h> #include <gre/gre.api_types.h> #define REPLY_MSG_ID_BASE gre_main.msg_id_base #include <vlibapi/api_helper_macros.h> static int gre_tunnel_type_decode (vl_api_gre_tunnel_type_t in, gre_tunnel_type_t *out) { switch (in) { #define _(n, v) \ case GRE_API_TUNNEL_TYPE_##n: \ *out = GRE_TUNNEL_TYPE_##n; \ return (0); foreach_gre_tunnel_type #undef _ } return (VNET_API_ERROR_INVALID_VALUE); } static vl_api_gre_tunnel_type_t gre_tunnel_type_encode (gre_tunnel_type_t in) { vl_api_gre_tunnel_type_t out = GRE_API_TUNNEL_TYPE_L3; switch (in) { #define _(n, v) \ case GRE_TUNNEL_TYPE_##n: \ out = GRE_API_TUNNEL_TYPE_##n; \ break; foreach_gre_tunnel_type #undef _ } return (out); } static void vl_api_gre_tunnel_add_del_t_handler (vl_api_gre_tunnel_add_del_t *mp) { vnet_gre_tunnel_add_del_args_t _a = {}, *a = &_a; vl_api_gre_tunnel_add_del_reply_t *rmp; tunnel_encap_decap_flags_t flags; u32 sw_if_index = ~0; ip46_type_t itype[2]; int rv = 0; itype[0] = ip_address_decode (&mp->tunnel.src, &a->src); itype[1] = ip_address_decode (&mp->tunnel.dst, &a->dst); if (itype[0] != itype[1]) { rv = VNET_API_ERROR_INVALID_PROTOCOL; goto out; } if (ip46_address_is_equal (&a->src, &a->dst)) { rv = VNET_API_ERROR_SAME_SRC_DST; goto out; } rv = gre_tunnel_type_decode (mp->tunnel.type, &a->type); if (rv) goto out; rv = tunnel_mode_decode (mp->tunnel.mode, &a->mode); if (rv) goto out; rv = tunnel_encap_decap_flags_decode (mp->tunnel.flags, &flags); if (rv) goto out; a->is_add = mp->is_add; a->is_ipv6 = (itype[0] == IP46_TYPE_IP6); a->instance = ntohl (mp->tunnel.instance); a->session_id = ntohs (mp->tunnel.session_id); a->outer_table_id = ntohl (mp->tunnel.outer_table_id); a->flags = flags; rv = vnet_gre_tunnel_add_del (a, &sw_if_index); out: REPLY_MACRO2 (VL_API_GRE_TUNNEL_ADD_DEL_REPLY, ({ rmp->sw_if_index = ntohl (sw_if_index); })); } static void send_gre_tunnel_details (gre_tunnel_t *t, vl_api_gre_tunnel_dump_t *mp) { vl_api_gre_tunnel_details_t *rmp; REPLY_MACRO_DETAILS2 ( VL_API_GRE_TUNNEL_DETAILS, ({ ip_address_encode (&t->tunnel_src, IP46_TYPE_ANY, &rmp->tunnel.src); ip_address_encode (&t->tunnel_dst.fp_addr, IP46_TYPE_ANY, &rmp->tunnel.dst); rmp->tunnel.outer_table_id = htonl ( fib_table_get_table_id (t->outer_fib_index, t->tunnel_dst.fp_proto)); rmp->tunnel.type = gre_tunnel_type_encode (t->type); rmp->tunnel.mode = tunnel_mode_encode (t->mode); rmp->tunnel.flags = tunnel_encap_decap_flags_encode (t->flags); rmp->tunnel.instance = htonl (t->user_instance); rmp->tunnel.sw_if_index = htonl (t->sw_if_index); rmp->tunnel.session_id = htons (t->session_id); })); } static void vl_api_gre_tunnel_dump_t_handler (vl_api_gre_tunnel_dump_t *mp) { vl_api_registration_t *reg; gre_main_t *gm = &gre_main; gre_tunnel_t *t; u32 sw_if_index; reg = vl_api_client_index_to_registration (mp->client_index); if (!reg) return; sw_if_index = ntohl (mp->sw_if_index); if (~0 == sw_if_index) { pool_foreach (t, gm->tunnels) { send_gre_tunnel_details (t, mp); } } else { if ((sw_if_index >= vec_len (gm->tunnel_index_by_sw_if_index)) || (~0 == gm->tunnel_index_by_sw_if_index[sw_if_index])) { return; } t = &gm->tunnels[gm->tunnel_index_by_sw_if_index[sw_if_index]]; send_gre_tunnel_details (t, mp); } } /* * gre_api_hookup * Add vpe's API message handlers to the table. * vlib has already mapped shared memory and * added the client registration handlers. * See .../vlib-api/vlibmemory/memclnt_vlib.c:memclnt_process() */ /* API definitions */ #include <vnet/format_fns.h> #include <gre/gre.api.c> static clib_error_t * gre_api_hookup (vlib_main_t *vm) { /* * Set up the (msg_name, crc, message-id) table */ gre_main.msg_id_base = setup_message_id_table (); return 0; } VLIB_API_INIT_FUNCTION (gre_api_hookup); /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */