diff options
Diffstat (limited to 'src/plugins/nat/pnat/pnat_api.c')
| -rw-r--r-- | src/plugins/nat/pnat/pnat_api.c | 207 |
1 files changed, 207 insertions, 0 deletions
diff --git a/src/plugins/nat/pnat/pnat_api.c b/src/plugins/nat/pnat/pnat_api.c new file mode 100644 index 00000000000..dad658c3e9e --- /dev/null +++ b/src/plugins/nat/pnat/pnat_api.c @@ -0,0 +1,207 @@ +/* + * 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> + +/* + * 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, PNAT_ATTACHMENT_POINT_MAX); + clib_memcpy(rmp->lookup_mask, i->lookup_mask, + sizeof(i->lookup_mask) * PNAT_ATTACHMENT_POINT_MAX); + + /* 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 = "0.0.1", + .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); |