mirror of https://github.com/F-Stack/f-stack.git
48 lines
1.5 KiB
C
48 lines
1.5 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright(c) 2016 Intel Corporation
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*/
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#ifndef _VHOST_KERNEL_TAP_H
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#define _VHOST_KERNEL_TAP_H
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#include <stdbool.h>
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#include <sys/ioctl.h>
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/* TUN ioctls */
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#define TUNSETIFF _IOW('T', 202, int)
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#define TUNGETFEATURES _IOR('T', 207, unsigned int)
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#define TUNSETOFFLOAD _IOW('T', 208, unsigned int)
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#define TUNGETIFF _IOR('T', 210, unsigned int)
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#define TUNSETSNDBUF _IOW('T', 212, int)
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#define TUNGETVNETHDRSZ _IOR('T', 215, int)
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#define TUNSETVNETHDRSZ _IOW('T', 216, int)
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#define TUNSETQUEUE _IOW('T', 217, int)
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#define TUNSETVNETLE _IOW('T', 220, int)
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#define TUNSETVNETBE _IOW('T', 222, int)
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/* TUNSETIFF ifr flags */
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#define IFF_TAP 0x0002
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#define IFF_NO_PI 0x1000
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#define IFF_ONE_QUEUE 0x2000
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#define IFF_VNET_HDR 0x4000
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#define IFF_MULTI_QUEUE 0x0100
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#define IFF_ATTACH_QUEUE 0x0200
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#define IFF_DETACH_QUEUE 0x0400
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/* Features for GSO (TUNSETOFFLOAD). */
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#define TUN_F_CSUM 0x01 /* You can hand me unchecksummed packets. */
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#define TUN_F_TSO4 0x02 /* I can handle TSO for IPv4 packets */
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#define TUN_F_TSO6 0x04 /* I can handle TSO for IPv6 packets */
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#define TUN_F_TSO_ECN 0x08 /* I can handle TSO with ECN bits. */
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#define TUN_F_UFO 0x10 /* I can handle UFO packets */
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/* Constants */
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#define PATH_NET_TUN "/dev/net/tun"
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int vhost_kernel_open_tap(char **p_ifname, int hdr_size, int req_mq,
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const char *mac, uint64_t features);
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int vhost_kernel_tap_set_offload(int fd, uint64_t features);
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int vhost_kernel_tap_set_queue(int fd, bool attach);
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#endif
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