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/*
* Copyright (c) 2017 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 <vlibapi/api.h>
#include <vlibmemory/api.h>
#include <plugins/stn/stn.h>
#include <vnet/ip/format.h>
#include <vppinfra/byte_order.h>
/* define message IDs */
#define vl_msg_id(n,h) n,
typedef enum
{
#include <stn/stn.api.h>
/* We'll want to know how many messages IDs we need... */
VL_MSG_FIRST_AVAILABLE,
} vl_msg_id_t;
#undef vl_msg_id
/* define message structures */
#define vl_typedefs
#include <stn/stn.api.h>
#undef vl_typedefs
/* define generated endian-swappers */
#define vl_endianfun
#include <stn/stn.api.h>
#undef vl_endianfun
/* instantiate all the print functions we know about */
#define vl_print(handle, ...) vlib_cli_output (handle, __VA_ARGS__)
#define vl_printfun
#include <stn/stn.api.h>
#undef vl_printfun
/* Get the API version number */
#define vl_api_version(n,v) static u32 api_version=(v);
#include <nat/nat_all_api_h.h>
#undef vl_api_version
#define REPLY_MSG_ID_BASE stn_main.msg_id_base
#include <vlibapi/api_helper_macros.h>
/* Macro to finish up custom dump fns */
#define FINISH \
vec_add1 (s, 0); \
vl_print (handle, (char *)s); \
vec_free (s); \
return handle;
/**
* @brief API message custom-dump function
* @param mp vl_api_stn_add_del_rule_t * mp the api message
* @param handle void * print function handle
* @returns u8 * output string
*/
static void *vl_api_stn_add_del_rule_t_print
(vl_api_stn_add_del_rule_t * mp, void *handle)
{
u8 *s;
s = format (0, "SCRIPT: stn_add_del_rule ");
if (mp->is_ip4)
s = format (s, "address %U ", format_ip4_address, mp->ip_address);
else
s = format (s, "address %U ", format_ip6_address, mp->ip_address);
s = format (s, "sw_if_index %d is_add %d", mp->sw_if_index, mp->is_add);
FINISH;
}
static void
vl_api_stn_add_del_rule_t_handler (vl_api_stn_add_del_rule_t * mp)
{
stn_rule_add_del_args_t args;
vl_api_stn_add_del_rule_reply_t *rmp;
int rv = 0;
if (mp->is_ip4)
{
ip4_address_t a;
memcpy(&a, mp->ip_address, sizeof(a));
ip46_address_set_ip4(&args.address, &a);
}
else
memcpy(&args.address.ip6, mp->ip_address, sizeof(ip6_address_t));
args.sw_if_index = clib_net_to_host_u32(mp->sw_if_index);
args.del = !mp->is_add;
rv = stn_rule_add_del(&args);
REPLY_MACRO (VL_API_STN_ADD_DEL_RULE_REPLY);
}
static void
send_stn_rule (stn_rule_t *r, unix_shared_memory_queue_t *q, u32 context)
{
vl_api_stn_rule_details_t *rmp;
rmp =
vl_msg_api_alloc (sizeof (*rmp));
memset (rmp, 0, sizeof (*rmp));
rmp->_vl_msg_id =
clib_host_to_net_u32 (VL_API_STN_RULES_DUMP + stn_main.msg_id_base);
if (ip46_address_is_ip4(&r->address))
{
clib_memcpy(rmp->ip_address, &r->address.ip4, sizeof(ip4_address_t));
rmp->is_ip4 = 1;
}
else
{
clib_memcpy(rmp->ip_address, &r->address.ip6, sizeof(ip6_address_t));
}
rmp->context = context;
rmp->sw_if_index = clib_host_to_net_u32(r->sw_if_index);
vl_msg_api_send_shmem (q, (u8 *) & rmp);
}
static void
vl_api_stn_rules_dump_t_handler (vl_api_stn_rules_dump_t *mp)
{
unix_shared_memory_queue_t *q;
stn_main_t *stn = &stn_main;
stn_rule_t *r;
q = vl_api_client_index_to_input_queue (mp->client_index);
if (q == 0)
return;
/* *INDENT-OFF* */
pool_foreach (r, stn->rules,
({
send_stn_rule (r, q, mp->context);
}));
/* *INDENT-ON* */
}
/* List of message types that this plugin understands */
#define foreach_stn_plugin_api_msg \
_(STN_ADD_DEL_RULE, stn_add_del_rule) \
_(STN_RULES_DUMP, stn_rules_dump)
/**
* @brief Set up the API message handling tables
* @param vm vlib_main_t * vlib main data structure pointer
* @returns 0 to indicate all is well
*/
static clib_error_t *
stn_plugin_api_hookup (vlib_main_t * vm)
{
stn_main_t *stn = &stn_main;
#define _(N,n) \
vl_msg_api_set_handlers((VL_API_##N + stn->msg_id_base), \
#n, \
vl_api_##n##_t_handler, \
vl_noop_handler, \
vl_api_##n##_t_endian, \
vl_api_##n##_t_print, \
sizeof(vl_api_##n##_t), 1);
foreach_stn_plugin_api_msg;
#undef _
return 0;
}
#define vl_msg_name_crc_list
#include <stn/stn.api.h>
#undef vl_msg_name_crc_list
static void
setup_message_id_table (stn_main_t * stn, api_main_t * am)
{
#define _(id,n,crc) \
vl_msg_api_add_msg_name_crc (am, #n "_" #crc, id + stn->msg_id_base);
foreach_vl_msg_name_crc_stn;
#undef _
}
static void
plugin_custom_dump_configure (stn_main_t * stn)
{
#define _(n,f) api_main.msg_print_handlers \
[VL_API_##n + stn->msg_id_base] \
= (void *) vl_api_##f##_t_print;
foreach_stn_plugin_api_msg;
#undef _
}
clib_error_t *
stn_api_init (vlib_main_t * vm, stn_main_t * sm)
{
u8 *name;
clib_error_t *error = 0;
name = format (0, "stn_%08x%c", api_version, 0);
/* Ask for a correctly-sized block of API message decode slots */
sm->msg_id_base =
vl_msg_api_get_msg_ids ((char *) name, VL_MSG_FIRST_AVAILABLE);
error = stn_plugin_api_hookup (vm);
/* Add our API messages to the global name_crc hash table */
setup_message_id_table (sm, &api_main);
plugin_custom_dump_configure (sm);
vec_free (name);
return error;
}
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