1 /* SPDX-License-Identifier: BSD-3-Clause 2 * Copyright(c) 2016 Intel Corporation 3 */ 4 5 #include <sys/ioctl.h> 6 7 /* TUN ioctls */ 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) 18 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 27 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 */ 34 35 /* Constants */ 36 #define PATH_NET_TUN "/dev/net/tun" 37 38 int vhost_kernel_open_tap(char **p_ifname, int hdr_size, int req_mq, 39 const char *mac, uint64_t features); 40