4e4f9ae7da
Import multiqueue constants from if_tun.h from 3.8-rc3. A new ifr flag IFF_MULTI_QUEUE were introduced to create a multiqueue backend by calling TUNSETIFF with the this flag and with the same interface name many times. A new ioctl TUNSETQUEUE were introduced. When doing this ioctl with IFF_DETACH_QUEUE, the queue were disabled in the linux kernel. When doing this ioctl with IFF_ATTACH_QUEUE, the queue were enabled in the linux kernel. Signed-off-by: Jason Wang <jasowang@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
52 lines
1.7 KiB
C
52 lines
1.7 KiB
C
/*
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* Universal TUN/TAP device driver.
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* Copyright (C) 1999-2000 Maxim Krasnyansky <max_mk@yahoo.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#ifndef QEMU_TAP_LINUX_H
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#define QEMU_TAP_LINUX_H
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#include <stdint.h>
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#ifdef __linux__
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#include <linux/ioctl.h>
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/* Ioctl defines */
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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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#endif
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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_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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#endif /* QEMU_TAP_H */
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