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/*
* Copyright (c) 2015 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.
*/
#define _GNU_SOURCE
#include <sys/socket.h>
#include <vlib/vlib.h>
#ifndef __TURBOTAP_H__
#define __TURBOTAP_H__
#define TUNGETSOCKFD _IOR('T', 224, int)
#define MAX_SEND 256
#define MAX_RECV 256
#define TAP_MTU_DEFAULT 1500
#define TAP_MTU_MAX 65535
#define TAP_MTU_MIN 68
#define foreach_turbotap_error \
/* Must be first. */ \
_(NONE, "no error") \
_(READ, "read error") \
_(BUFFER_ALLOCATION, "buffer allocation error") \
_(UNKNOWN, "unknown error")
typedef enum {
#define _(sym,str) TURBOTAP_ERROR_##sym,
foreach_turbotap_error
#undef _
TURBOTAP_N_ERROR,
} turbotap_error_t;
typedef struct {
u32 unix_fd;
u32 unix_file_index;
u32 provision_fd;
u32 sw_if_index; /* for counters */
u32 hw_if_index;
u32 is_promisc;
struct ifreq ifr;
u32 per_interface_next_index;
u8 active; /* for delete */
/* mtu count, mtu buffers */
u32 mtu_bytes;
u32 mtu_buffers;
/* turbotap */
int turbotap_fd;
int sock_fd;
int rx_ready;
struct mmsghdr rx_msg[MAX_RECV];
struct mmsghdr tx_msg[MAX_SEND];
} turbotap_interface_t;
typedef struct {
/* Vector of VLIB rx buffers to use. */
u32 * rx_buffers;
/* record and put back unused rx buffers */
u32 * unused_buffer_list;
/* Default MTU for newly created turbotap interface. */
u32 mtu_bytes;
/* Vector of tap interfaces */
turbotap_interface_t * turbotap_interfaces;
/* Vector of deleted tap interfaces */
u32 * turbotap_inactive_interfaces;
/* Bitmap of tap interfaces with pending reads */
uword * pending_read_bitmap;
/* Hash table to find turbotap interface given hw_if_index */
uword * turbotap_interface_index_by_sw_if_index;
/* Hash table to find turbotap interface given unix fd */
uword * turbotap_interface_index_by_unix_fd;
/* renumbering table */
u32 * show_dev_instance_by_real_dev_instance;
/* 1 => disable CLI */
int is_disabled;
/* convenience */
vlib_main_t * vlib_main;
vnet_main_t * vnet_main;
unix_main_t * unix_main;
} turbotap_main_t;
extern vnet_device_class_t turbotap_dev_class;
extern vlib_node_registration_t turbotap_rx_node;
extern turbotap_main_t turbotap_main;
int vnet_turbotap_connect(vlib_main_t * vm, u8 * intfc_name, u8 *hwaddr_arg,
u32 * sw_if_indexp);
int vnet_turbotap_delete(vlib_main_t *vm, u32 sw_if_index);
#endif
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