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/*
*------------------------------------------------------------------
* af_packet_api.c - af-packet 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 <vnet/devices/af_packet/af_packet.h>
#include <vnet/vnet_msg_enum.h>
#define vl_typedefs /* define message structures */
#include <vnet/vnet_all_api_h.h>
#undef vl_typedefs
#define vl_endianfun /* define message structures */
#include <vnet/vnet_all_api_h.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 <vnet/vnet_all_api_h.h>
#undef vl_printfun
#include <vlibapi/api_helper_macros.h>
#define foreach_vpe_api_msg \
_(AF_PACKET_CREATE, af_packet_create) \
_(AF_PACKET_DELETE, af_packet_delete) \
_(AF_PACKET_SET_L4_CKSUM_OFFLOAD, af_packet_set_l4_cksum_offload) \
_(AF_PACKET_DUMP, af_packet_dump)
static void
vl_api_af_packet_create_t_handler (vl_api_af_packet_create_t * mp)
{
vlib_main_t *vm = vlib_get_main ();
vl_api_af_packet_create_reply_t *rmp;
int rv = 0;
u8 *host_if_name = NULL;
u32 sw_if_index;
host_if_name = format (0, "%s", mp->host_if_name);
vec_add1 (host_if_name, 0);
rv = af_packet_create_if (vm, host_if_name,
mp->use_random_hw_addr ? 0 : mp->hw_addr,
&sw_if_index);
vec_free (host_if_name);
/* *INDENT-OFF* */
REPLY_MACRO2(VL_API_AF_PACKET_CREATE_REPLY,
({
rmp->sw_if_index = clib_host_to_net_u32(sw_if_index);
}));
/* *INDENT-ON* */
}
static void
vl_api_af_packet_delete_t_handler (vl_api_af_packet_delete_t * mp)
{
vlib_main_t *vm = vlib_get_main ();
vl_api_af_packet_delete_reply_t *rmp;
int rv = 0;
u8 *host_if_name = NULL;
host_if_name = format (0, "%s", mp->host_if_name);
vec_add1 (host_if_name, 0);
rv = af_packet_delete_if (vm, host_if_name);
vec_free (host_if_name);
REPLY_MACRO (VL_API_AF_PACKET_DELETE_REPLY);
}
static void
vl_api_af_packet_set_l4_cksum_offload_t_handler
(vl_api_af_packet_set_l4_cksum_offload_t * mp)
{
vlib_main_t *vm = vlib_get_main ();
vl_api_af_packet_delete_reply_t *rmp;
int rv = 0;
rv = af_packet_set_l4_cksum_offload (vm, ntohl (mp->sw_if_index), mp->set);
REPLY_MACRO (VL_API_AF_PACKET_SET_L4_CKSUM_OFFLOAD_REPLY);
}
static void
af_packet_send_details (vpe_api_main_t * am,
vl_api_registration_t * reg,
af_packet_if_detail_t * af_packet_if, u32 context)
{
vl_api_af_packet_details_t *mp;
mp = vl_msg_api_alloc (sizeof (*mp));
clib_memset (mp, 0, sizeof (*mp));
mp->_vl_msg_id = htons (VL_API_AF_PACKET_DETAILS);
mp->sw_if_index = htonl (af_packet_if->sw_if_index);
clib_memcpy (mp->host_if_name, af_packet_if->host_if_name,
MIN (ARRAY_LEN (mp->host_if_name) - 1,
strlen ((const char *) af_packet_if->host_if_name)));
mp->context = context;
vl_api_send_msg (reg, (u8 *) mp);
}
static void
vl_api_af_packet_dump_t_handler (vl_api_af_packet_dump_t * mp)
{
int rv;
vpe_api_main_t *am = &vpe_api_main;
vl_api_registration_t *reg;
af_packet_if_detail_t *out_af_packet_ifs = NULL;
af_packet_if_detail_t *af_packet_if = NULL;
reg = vl_api_client_index_to_registration (mp->client_index);
if (!reg)
return;
rv = af_packet_dump_ifs (&out_af_packet_ifs);
if (rv)
return;
vec_foreach (af_packet_if, out_af_packet_ifs)
{
af_packet_send_details (am, reg, af_packet_if, mp->context);
}
vec_free (out_af_packet_ifs);
}
/*
* af_packet_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()
*/
#define vl_msg_name_crc_list
#include <vnet/vnet_all_api_h.h>
#undef vl_msg_name_crc_list
static void
setup_message_id_table (api_main_t * am)
{
#define _(id,n,crc) vl_msg_api_add_msg_name_crc (am, #n "_" #crc, id);
foreach_vl_msg_name_crc_af_packet;
#undef _
}
static clib_error_t *
af_packet_api_hookup (vlib_main_t * vm)
{
api_main_t *am = vlibapi_get_main ();
#define _(N,n) \
vl_msg_api_set_handlers(VL_API_##N, #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_vpe_api_msg;
#undef _
/*
* Set up the (msg_name, crc, message-id) table
*/
setup_message_id_table (am);
return 0;
}
VLIB_API_INIT_FUNCTION (af_packet_api_hookup);
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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