15566a3e3SBruce Richardson /* SPDX-License-Identifier: BSD-3-Clause 25566a3e3SBruce Richardson * Copyright(c) 2016 Intel Corporation 3e3b43481SJianfeng Tan */ 4e3b43481SJianfeng Tan 547ac9661STiwei Bie #ifndef _VHOST_KERNEL_TAP_H 647ac9661STiwei Bie #define _VHOST_KERNEL_TAP_H 747ac9661STiwei Bie 847ac9661STiwei Bie #include <stdbool.h> 9e3b43481SJianfeng Tan #include <sys/ioctl.h> 10e3b43481SJianfeng Tan 11e3b43481SJianfeng Tan /* TUN ioctls */ 12e3b43481SJianfeng Tan #define TUNSETIFF _IOW('T', 202, int) 13e3b43481SJianfeng Tan #define TUNGETFEATURES _IOR('T', 207, unsigned int) 14e3b43481SJianfeng Tan #define TUNSETOFFLOAD _IOW('T', 208, unsigned int) 15e3b43481SJianfeng Tan #define TUNGETIFF _IOR('T', 210, unsigned int) 16e3b43481SJianfeng Tan #define TUNSETSNDBUF _IOW('T', 212, int) 17e3b43481SJianfeng Tan #define TUNGETVNETHDRSZ _IOR('T', 215, int) 18e3b43481SJianfeng Tan #define TUNSETVNETHDRSZ _IOW('T', 216, int) 19e3b43481SJianfeng Tan 20e3b43481SJianfeng Tan /* TUNSETIFF ifr flags */ 21e3b43481SJianfeng Tan #define IFF_TAP 0x0002 22e3b43481SJianfeng Tan #define IFF_NO_PI 0x1000 23e3b43481SJianfeng Tan #define IFF_VNET_HDR 0x4000 24e3b43481SJianfeng Tan #define IFF_MULTI_QUEUE 0x0100 25*666ff776SHarold Huang #define IFF_NAPI 0x0010 26e3b43481SJianfeng Tan 275e97e420SJianfeng Tan /* Features for GSO (TUNSETOFFLOAD). */ 285e97e420SJianfeng Tan #define TUN_F_CSUM 0x01 /* You can hand me unchecksummed packets. */ 295e97e420SJianfeng Tan #define TUN_F_TSO4 0x02 /* I can handle TSO for IPv4 packets */ 305e97e420SJianfeng Tan #define TUN_F_TSO6 0x04 /* I can handle TSO for IPv6 packets */ 315e97e420SJianfeng Tan #define TUN_F_TSO_ECN 0x08 /* I can handle TSO with ECN bits. */ 325e97e420SJianfeng Tan #define TUN_F_UFO 0x10 /* I can handle UFO packets */ 335e97e420SJianfeng Tan 34e3b43481SJianfeng Tan /* Constants */ 35e3b43481SJianfeng Tan #define PATH_NET_TUN "/dev/net/tun" 36e3b43481SJianfeng Tan 37b72099beSDavid Marchand int vhost_kernel_tap_setup(int tapfd, int hdr_size, uint64_t features); 38b72099beSDavid Marchand 39cc0151b3SMaxime Coquelin int tap_support_features(unsigned int *tap_features); 40*666ff776SHarold Huang int tap_open(const char *ifname, unsigned int r_flags, bool multi_queue); 41b72099beSDavid Marchand int tap_get_name(int tapfd, char **ifname); 42b72099beSDavid Marchand int tap_get_flags(int tapfd, unsigned int *tap_flags); 43b72099beSDavid Marchand int tap_set_mac(int tapfd, uint8_t *mac); 4447ac9661STiwei Bie 4547ac9661STiwei Bie #endif 46