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/*
*------------------------------------------------------------------
* Copyright (c) 2020 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 <vlib/vlib.h>
#include <vnet/vnet.h>
#include <af_xdp/af_xdp.h>
#include <vlibapi/api.h>
#include <vlibmemory/api.h>
/* define message IDs */
#include <af_xdp/af_xdp.api_enum.h>
#include <af_xdp/af_xdp.api_types.h>
#define REPLY_MSG_ID_BASE (rm->msg_id_base)
#include <vlibapi/api_helper_macros.h>
static af_xdp_mode_t
af_xdp_api_mode (vl_api_af_xdp_mode_t mode)
{
switch (mode)
{
case AF_XDP_API_MODE_AUTO:
return AF_XDP_MODE_AUTO;
case AF_XDP_API_MODE_COPY:
return AF_XDP_MODE_COPY;
case AF_XDP_API_MODE_ZERO_COPY:
return AF_XDP_MODE_ZERO_COPY;
}
return AF_XDP_MODE_AUTO;
}
static af_xdp_create_flag_t
af_xdp_api_flags (vl_api_af_xdp_flag_t flags)
{
af_xdp_create_flag_t cflags = 0;
if (flags & AF_XDP_API_FLAGS_NO_SYSCALL_LOCK)
cflags |= AF_XDP_CREATE_FLAGS_NO_SYSCALL_LOCK;
return cflags;
}
static void
vl_api_af_xdp_create_t_handler (vl_api_af_xdp_create_t * mp)
{
vlib_main_t *vm = vlib_get_main ();
af_xdp_main_t *rm = &af_xdp_main;
vl_api_af_xdp_create_reply_t *rmp;
af_xdp_create_if_args_t args;
int rv;
clib_memset (&args, 0, sizeof (af_xdp_create_if_args_t));
args.linux_ifname = mp->host_if[0] ? (char *) mp->host_if : 0;
args.name = mp->name[0] ? (char *) mp->name : 0;
args.prog = mp->prog[0] ? (char *) mp->prog : 0;
args.mode = af_xdp_api_mode (mp->mode);
args.flags = af_xdp_api_flags (mp->flags);
args.rxq_size = ntohs (mp->rxq_size);
args.txq_size = ntohs (mp->txq_size);
args.rxq_num = ntohs (mp->rxq_num);
af_xdp_create_if (vm, &args);
rv = args.rv;
REPLY_MACRO2 (VL_API_AF_XDP_CREATE_REPLY,
({ rmp->sw_if_index = ntohl (args.sw_if_index); }));
}
static void
vl_api_af_xdp_create_v2_t_handler (vl_api_af_xdp_create_v2_t *mp)
{
vlib_main_t *vm = vlib_get_main ();
af_xdp_main_t *rm = &af_xdp_main;
vl_api_af_xdp_create_v2_reply_t *rmp;
af_xdp_create_if_args_t args;
int rv;
clib_memset (&args, 0, sizeof (af_xdp_create_if_args_t));
args.linux_ifname = mp->host_if[0] ? (char *) mp->host_if : 0;
args.name = mp->name[0] ? (char *) mp->name : 0;
args.prog = mp->prog[0] ? (char *) mp->prog : 0;
args.netns = mp->namespace[0] ? (char *) mp->namespace : 0;
args.mode = af_xdp_api_mode (mp->mode);
args.flags = af_xdp_api_flags (mp->flags);
args.rxq_size = ntohs (mp->rxq_size);
args.txq_size = ntohs (mp->txq_size);
args.rxq_num = ntohs (mp->rxq_num);
af_xdp_create_if (vm, &args);
rv = args.rv;
/* clang-format off */
REPLY_MACRO2 (VL_API_AF_XDP_CREATE_V2_REPLY,
({
rmp->sw_if_index = ntohl (args.sw_if_index);
}));
/* clang-format on */
}
static void
vl_api_af_xdp_create_v3_t_handler (vl_api_af_xdp_create_v3_t *mp)
{
vlib_main_t *vm = vlib_get_main ();
af_xdp_main_t *rm = &af_xdp_main;
vl_api_af_xdp_create_v3_reply_t *rmp;
af_xdp_create_if_args_t args;
int rv;
clib_memset (&args, 0, sizeof (af_xdp_create_if_args_t));
args.linux_ifname = mp->host_if[0] ? (char *) mp->host_if : 0;
args.name = mp->name[0] ? (char *) mp->name : 0;
args.prog = mp->prog[0] ? (char *) mp->prog : 0;
args.netns = mp->netns[0] ? (char *) mp->netns : 0;
args.mode = af_xdp_api_mode (mp->mode);
args.flags = af_xdp_api_flags (mp->flags);
args.rxq_size = mp->rxq_size;
args.txq_size = mp->txq_size;
args.rxq_num = mp->rxq_num;
af_xdp_create_if (vm, &args);
rv = args.rv;
/* clang-format off */
REPLY_MACRO2_END (VL_API_AF_XDP_CREATE_V3_REPLY,
({
rmp->sw_if_index = args.sw_if_index;
}));
/* clang-format on */
}
static void
vl_api_af_xdp_delete_t_handler (vl_api_af_xdp_delete_t * mp)
{
vlib_main_t *vm = vlib_get_main ();
vnet_main_t *vnm = vnet_get_main ();
af_xdp_main_t *rm = &af_xdp_main;
vl_api_af_xdp_delete_reply_t *rmp;
af_xdp_device_t *rd;
vnet_hw_interface_t *hw;
int rv = 0;
hw =
vnet_get_sup_hw_interface_api_visible_or_null (vnm,
htonl (mp->sw_if_index));
if (hw == NULL || af_xdp_device_class.index != hw->dev_class_index)
{
rv = VNET_API_ERROR_INVALID_INTERFACE;
goto reply;
}
rd = pool_elt_at_index (rm->devices, hw->dev_instance);
af_xdp_delete_if (vm, rd);
reply:
REPLY_MACRO (VL_API_AF_XDP_DELETE_REPLY);
}
/* set tup the API message handling tables */
#include <af_xdp/af_xdp.api.c>
static clib_error_t *
af_xdp_plugin_api_hookup (vlib_main_t * vm)
{
af_xdp_main_t *rm = &af_xdp_main;
/* ask for a correctly-sized block of API message decode slots */
rm->msg_id_base = setup_message_id_table ();
return 0;
}
VLIB_API_INIT_FUNCTION (af_xdp_plugin_api_hookup);
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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