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-rw-r--r--src/plugins/nat/pnat/pnat_api.c207
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);