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1f24f68225
In order to learn libvirt multiqueue several things must be done: 1) The '/dev/net/tun' device needs to be opened multiple times with IFF_MULTI_QUEUE flag passed to ioctl(fd, TUNSETIFF, &ifr); 2) Similarly, '/dev/vhost-net' must be opened as many times as in 1) in order to keep 1:1 ratio recommended by qemu and kernel folks. 3) The command line construction code needs to switch from 'fd=X' to 'fds=X:Y:...:Z' and from 'vhostfd=X' to 'vhostfds=X:Y:...:Z'. 4) The monitor handling code needs to learn to pass multiple FDs.
68 lines
2.5 KiB
C
68 lines
2.5 KiB
C
/*
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* Copyright (C) 2007-2011 Red Hat, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see
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* <http://www.gnu.org/licenses/>.
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*
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* Authors:
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* Mark McLoughlin <markmc@redhat.com>
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* Daniel P. Berrange <berrange@redhat.com>
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*/
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#ifndef __VIR_NETDEV_TAP_H__
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# define __VIR_NETDEV_TAP_H__
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# include "internal.h"
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# include "virnetdevvportprofile.h"
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# include "virnetdevvlan.h"
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int virNetDevTapCreate(char **ifname,
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int *tapfd,
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int tapfdSize,
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unsigned int flags)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_RETURN_CHECK;
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int virNetDevTapDelete(const char *ifname)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_RETURN_CHECK;
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int virNetDevTapGetName(int tapfd, char **ifname)
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ATTRIBUTE_NONNULL(2) ATTRIBUTE_RETURN_CHECK;
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typedef enum {
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VIR_NETDEV_TAP_CREATE_NONE = 0,
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/* Bring the interface up */
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VIR_NETDEV_TAP_CREATE_IFUP = 1 << 0,
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/* Enable IFF_VNET_HDR on the tap device */
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VIR_NETDEV_TAP_CREATE_VNET_HDR = 1 << 1,
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/* Set this interface's MAC as the bridge's MAC address */
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VIR_NETDEV_TAP_CREATE_USE_MAC_FOR_BRIDGE = 1 << 2,
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/* The device will persist after the file descriptor is closed */
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VIR_NETDEV_TAP_CREATE_PERSIST = 1 << 3,
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} virNetDevTapCreateFlags;
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int virNetDevTapCreateInBridgePort(const char *brname,
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char **ifname,
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const virMacAddrPtr macaddr,
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const unsigned char *vmuuid,
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int *tapfd,
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int tapfdSize,
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virNetDevVPortProfilePtr virtPortProfile,
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virNetDevVlanPtr virtVlan,
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unsigned int flags)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_NONNULL(3)
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ATTRIBUTE_RETURN_CHECK;
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#endif /* __VIR_NETDEV_TAP_H__ */
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