1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2016 Intel Corporation
8 #define TUNSETIFF _IOW('T', 202, int)
9 #define TUNGETFEATURES _IOR('T', 207, unsigned int)
10 #define TUNSETOFFLOAD _IOW('T', 208, unsigned int)
11 #define TUNGETIFF _IOR('T', 210, unsigned int)
12 #define TUNSETSNDBUF _IOW('T', 212, int)
13 #define TUNGETVNETHDRSZ _IOR('T', 215, int)
14 #define TUNSETVNETHDRSZ _IOW('T', 216, int)
15 #define TUNSETQUEUE _IOW('T', 217, int)
16 #define TUNSETVNETLE _IOW('T', 220, int)
17 #define TUNSETVNETBE _IOW('T', 222, int)
19 /* TUNSETIFF ifr flags */
20 #define IFF_TAP 0x0002
21 #define IFF_NO_PI 0x1000
22 #define IFF_ONE_QUEUE 0x2000
23 #define IFF_VNET_HDR 0x4000
24 #define IFF_MULTI_QUEUE 0x0100
25 #define IFF_ATTACH_QUEUE 0x0200
26 #define IFF_DETACH_QUEUE 0x0400
28 /* Features for GSO (TUNSETOFFLOAD). */
29 #define TUN_F_CSUM 0x01 /* You can hand me unchecksummed packets. */
30 #define TUN_F_TSO4 0x02 /* I can handle TSO for IPv4 packets */
31 #define TUN_F_TSO6 0x04 /* I can handle TSO for IPv6 packets */
32 #define TUN_F_TSO_ECN 0x08 /* I can handle TSO with ECN bits. */
33 #define TUN_F_UFO 0x10 /* I can handle UFO packets */
36 #define PATH_NET_TUN "/dev/net/tun"
38 int vhost_kernel_open_tap(char **p_ifname, int hdr_size, int req_mq);