/* * Copyright (c) 2021 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 "pnat.h" #include <pnat/pnat.api_enum.h> #include <pnat/pnat.api_types.h> #include <vlibmemory/api.h> #include <vnet/fib/fib_table.h> #include <vnet/ip/ip.h> #include <vnet/ip/ip_types_api.h> #include <vnet/ip/reass/ip4_sv_reass.h> #include <vnet/ip/reass/ip6_full_reass.h> #include <vnet/ip/reass/ip6_sv_reass.h> #include <vpp/app/version.h> /* * This file contains the API handlers for the pnat.api */ #define REPLY_MSG_ID_BASE pm->msg_id_base #include <vlibapi/api_helper_macros.h> static void vl_api_pnat_binding_add_t_handler(vl_api_pnat_binding_add_t *mp) { pnat_main_t *pm = &pnat_main; vl_api_pnat_binding_add_reply_t *rmp; u32 binding_index; int rv = pnat_binding_add(&mp->match, &mp->rewrite, &binding_index); REPLY_MACRO2_END(VL_API_PNAT_BINDING_ADD_REPLY, ({ rmp->binding_index = binding_index; })); } static void vl_api_pnat_binding_attach_t_handler(vl_api_pnat_binding_attach_t *mp) { pnat_main_t *pm = &pnat_main; vl_api_pnat_binding_attach_reply_t *rmp; int rv; /* Ensure that the interface exists */ if (!vnet_sw_if_index_is_api_valid(mp->sw_if_index)) { rv = VNET_API_ERROR_INVALID_SW_IF_INDEX; goto bad_sw_if_index; } rv = pnat_binding_attach(mp->sw_if_index, mp->attachment, mp->binding_index); bad_sw_if_index: REPLY_MACRO_END(VL_API_PNAT_BINDING_ATTACH_REPLY); } static void vl_api_pnat_binding_detach_t_handler(vl_api_pnat_binding_detach_t *mp) { pnat_main_t *pm = &pnat_main; vl_api_pnat_binding_detach_reply_t *rmp; int rv; /* Ensure that the interface exists */ if (!vnet_sw_if_index_is_api_valid(mp->sw_if_index)) { rv = VNET_API_ERROR_INVALID_SW_IF_INDEX; goto bad_sw_if_index; } rv = pnat_binding_detach(mp->sw_if_index, mp->attachment, mp->binding_index); bad_sw_if_index: REPLY_MACRO_END(VL_API_PNAT_BINDING_DETACH_REPLY); } static void vl_api_pnat_binding_del_t_handler(vl_api_pnat_binding_del_t *mp) { pnat_main_t *pm = &pnat_main; vl_api_pnat_binding_del_reply_t *rmp; int rv = pnat_binding_del(mp->binding_index); REPLY_MACRO_END(VL_API_PNAT_BINDING_DEL_REPLY); } /* * Workaround for a bug in vppapigen that doesn't register the endian handler * for _details messages. When that's fixed it should be possible to use * REPLY_MACRO_DETAILS4_END and not have to care about endian-ness in the * handler itself. */ #define vl_endianfun #include <pnat/pnat.api.h> #undef vl_endianfun static void send_bindings_details(u32 index, vl_api_registration_t *rp, u32 context) { pnat_main_t *pm = &pnat_main; vl_api_pnat_bindings_details_t *rmp; pnat_translation_t *t = pool_elt_at_index(pm->translations, index); /* Make sure every field is initiated (or don't skip the clib_memset()) */ REPLY_MACRO_DETAILS4(VL_API_PNAT_BINDINGS_DETAILS, rp, context, ({ rmp->match = t->match; rmp->rewrite = t->rewrite; /* Endian hack until apigen registers _details * endian functions */ vl_api_pnat_bindings_details_t_endian(rmp); rmp->_vl_msg_id = htons(rmp->_vl_msg_id); rmp->context = htonl(rmp->context); })); } static void vl_api_pnat_bindings_get_t_handler(vl_api_pnat_bindings_get_t *mp) { pnat_main_t *pm = &pnat_main; vl_api_pnat_bindings_get_reply_t *rmp; i32 rv = 0; if (pool_elts(pm->translations) == 0) { REPLY_MACRO(VL_API_PNAT_BINDINGS_GET_REPLY); return; } /* * "cursor" comes from the get call, and allows client to continue a dump */ REPLY_AND_DETAILS_MACRO(VL_API_PNAT_BINDINGS_GET_REPLY, pm->translations, ({ send_bindings_details(cursor, rp, mp->context); })); } static void send_interfaces_details(u32 index, vl_api_registration_t *rp, u32 context) { pnat_main_t *pm = &pnat_main; vl_api_pnat_interfaces_details_t *rmp; pnat_interface_t *i = pool_elt_at_index(pm->interfaces, index); /* Make sure every field is initiated (or don't skip the clib_memset()) */ REPLY_MACRO_DETAILS4( VL_API_PNAT_INTERFACES_DETAILS, rp, context, ({ rmp->sw_if_index = i->sw_if_index; clib_memcpy(rmp->enabled, i->enabled, sizeof(rmp->enabled)); clib_memcpy(rmp->lookup_mask, i->lookup_mask, sizeof(rmp->lookup_mask)); /* Endian hack until apigen registers _details * endian functions */ vl_api_pnat_interfaces_details_t_endian(rmp); rmp->_vl_msg_id = htons(rmp->_vl_msg_id); rmp->context = htonl(rmp->context); })); } static void vl_api_pnat_interfaces_get_t_handler(vl_api_pnat_interfaces_get_t *mp) { pnat_main_t *pm = &pnat_main; vl_api_pnat_interfaces_get_reply_t *rmp; i32 rv = 0; if (pool_elts(pm->interfaces) == 0) { REPLY_MACRO(VL_API_PNAT_INTERFACES_GET_REPLY); return; } /* * "cursor" comes from the get call, and allows client to continue a dump */ REPLY_AND_DETAILS_MACRO( VL_API_PNAT_INTERFACES_GET_REPLY, pm->interfaces, ({ send_interfaces_details(cursor, rp, mp->context); })); } /* API definitions */ #include <vnet/format_fns.h> #include <pnat/pnat.api.c> /* Set up the API message handling tables */ clib_error_t *pnat_plugin_api_hookup(vlib_main_t *vm) { pnat_main_t *pm = &pnat_main; pm->msg_id_base = setup_message_id_table(); return 0; } /* * Register the plugin and hook up the API */ #include <vnet/plugin/plugin.h> VLIB_PLUGIN_REGISTER() = { .version = VPP_BUILD_VER, .description = "Policy 1:1 NAT", }; clib_error_t *pnat_init(vlib_main_t *vm) { pnat_main_t *pm = &pnat_main; memset(pm, 0, sizeof(*pm)); return pnat_plugin_api_hookup(vm); } VLIB_INIT_FUNCTION(pnat_init);