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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/format_fns.h>
#include <vnet/devices/af_packet/af_packet.api_enum.h>
#include <vnet/devices/af_packet/af_packet.api_types.h>
#define REPLY_MSG_ID_BASE msg_id_base
#include <vlibapi/api_helper_macros.h>
static u16 msg_id_base;
static void
vl_api_af_packet_create_t_handler (vl_api_af_packet_create_t * mp)
{
af_packet_create_if_arg_t _arg, *arg = &_arg;
vl_api_af_packet_create_reply_t *rmp;
int rv = 0;
clib_memset (arg, 0, sizeof (*arg));
arg->host_if_name = format (0, "%s", mp->host_if_name);
vec_add1 (arg->host_if_name, 0);
arg->hw_addr = mp->use_random_hw_addr ? 0 : mp->hw_addr;
arg->mode = AF_PACKET_IF_MODE_ETHERNET;
// Default flags
arg->flags = AF_PACKET_IF_FLAGS_QDISC_BYPASS | AF_PACKET_IF_FLAGS_CKSUM_GSO;
rv = af_packet_create_if (arg);
vec_free (arg->host_if_name);
REPLY_MACRO2 (VL_API_AF_PACKET_CREATE_REPLY, ({
rmp->sw_if_index = clib_host_to_net_u32 (arg->sw_if_index);
}));
}
static void
vl_api_af_packet_create_v2_t_handler (vl_api_af_packet_create_v2_t *mp)
{
af_packet_create_if_arg_t _arg, *arg = &_arg;
vl_api_af_packet_create_v2_reply_t *rmp;
int rv = 0;
clib_memset (arg, 0, sizeof (*arg));
arg->host_if_name = format (0, "%s", mp->host_if_name);
vec_add1 (arg->host_if_name, 0);
// Default number of rx/tx queue(s)
arg->num_rxqs = 1;
arg->num_txqs = 1;
arg->rx_frame_size = clib_net_to_host_u32 (mp->rx_frame_size);
arg->tx_frame_size = clib_net_to_host_u32 (mp->tx_frame_size);
arg->rx_frames_per_block = clib_net_to_host_u32 (mp->rx_frames_per_block);
arg->tx_frames_per_block = clib_net_to_host_u32 (mp->tx_frames_per_block);
arg->hw_addr = mp->use_random_hw_addr ? 0 : mp->hw_addr;
arg->mode = AF_PACKET_IF_MODE_ETHERNET;
// Default flags
arg->flags = AF_PACKET_IF_FLAGS_QDISC_BYPASS | AF_PACKET_IF_FLAGS_CKSUM_GSO;
if (mp->num_rx_queues > 1)
arg->num_rxqs = clib_net_to_host_u16 (mp->num_rx_queues);
rv = af_packet_create_if (arg);
vec_free (arg->host_if_name);
REPLY_MACRO2 (VL_API_AF_PACKET_CREATE_V2_REPLY, ({
rmp->sw_if_index = clib_host_to_net_u32 (arg->sw_if_index);
}));
}
static void
vl_api_af_packet_create_v3_t_handler (vl_api_af_packet_create_v3_t *mp)
{
af_packet_create_if_arg_t _arg, *arg = &_arg;
vl_api_af_packet_create_v3_reply_t *rmp;
int rv = 0;
clib_memset (arg, 0, sizeof (*arg));
arg->host_if_name = format (0, "%s", mp->host_if_name);
vec_add1 (arg->host_if_name, 0);
// Default number of rx/tx queue(s)
arg->num_rxqs = 1;
arg->num_txqs = 1;
arg->rx_frame_size = clib_net_to_host_u32 (mp->rx_frame_size);
arg->tx_frame_size = clib_net_to_host_u32 (mp->tx_frame_size);
arg->rx_frames_per_block = clib_net_to_host_u32 (mp->rx_frames_per_block);
arg->tx_frames_per_block = clib_net_to_host_u32 (mp->tx_frames_per_block);
arg->hw_addr = mp->use_random_hw_addr ? 0 : mp->hw_addr;
switch (clib_net_to_host_u32 (mp->mode))
{
case AF_PACKET_API_MODE_ETHERNET:
arg->mode = AF_PACKET_IF_MODE_ETHERNET;
break;
case AF_PACKET_API_MODE_IP:
arg->mode = AF_PACKET_IF_MODE_IP;
break;
default:
arg->sw_if_index = ~0;
rv = VNET_ERR_INVALID_VALUE;
goto error;
}
STATIC_ASSERT (((int) AF_PACKET_API_FLAG_QDISC_BYPASS ==
(int) AF_PACKET_IF_FLAGS_QDISC_BYPASS),
"af-packet qdisc-bypass api flag mismatch");
STATIC_ASSERT (
((int) AF_PACKET_API_FLAG_CKSUM_GSO == (int) AF_PACKET_IF_FLAGS_CKSUM_GSO),
"af-packet checksum/gso offload api flag mismatch");
// Default flags
arg->flags = clib_net_to_host_u32 (mp->flags);
if (clib_net_to_host_u16 (mp->num_rx_queues) > 1)
arg->num_rxqs = clib_net_to_host_u16 (mp->num_rx_queues);
if (clib_net_to_host_u16 (mp->num_tx_queues) > 1)
arg->num_txqs = clib_net_to_host_u16 (mp->num_tx_queues);
rv = af_packet_create_if (arg);
error:
vec_free (arg->host_if_name);
REPLY_MACRO2 (VL_API_AF_PACKET_CREATE_V3_REPLY, ({
rmp->sw_if_index = clib_host_to_net_u32 (arg->sw_if_index);
}));
}
static void
vl_api_af_packet_delete_t_handler (vl_api_af_packet_delete_t * mp)
{
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 (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)
{
vl_api_af_packet_delete_reply_t *rmp;
int rv = 0;
rv = af_packet_set_l4_cksum_offload (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 (REPLY_MSG_ID_BASE + 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);
}
#include <vnet/devices/af_packet/af_packet.api.c>
static clib_error_t *
af_packet_api_hookup (vlib_main_t * vm)
{
/*
* Set up the (msg_name, crc, message-id) table
*/
REPLY_MSG_ID_BASE = setup_message_id_table ();
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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