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f391889f4e
A PCI device may have the capability to setup virtual functions (VFs) but have them currently all disabled. Prior to this patch, if that was the case the the node device XML for the device wouldn't report any virtual_functions capability. With this patch, if a file called "sriov_totalvfs" is found in the device's sysfs directory, its contents will be interpreted as a decimal number, and that value will be reported as "maxCount" in a capability element of the device's XML, e.g.: <capability type='virtual_functions' maxCount='7'/> This will be reported regardless of whether or not any VFs are currently enabled for the device. NB: sriov_numvfs (the number of VFs currently active) is also available in sysfs, but that value is implied by the number of items in the list that is inside the capability element, so there is no reason to explicitly provide it as an attribute. sriov_totalvfs and sriov_numvfs are available in kernels at least as far back as the 2.6.32 that is in RHEL6.7, but in the case that they simply aren't there, libvirt will behave as it did prior to this patch - no maxCount will be displayed, and the virtual_functions capability will be absent from the device's XML when 0 VFs are enabled.
233 lines
8.7 KiB
C
233 lines
8.7 KiB
C
/*
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* Copyright (C) 2007-2015 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_H__
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# define __VIR_NETDEV_H__
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# include <net/if.h>
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# include "virbitmap.h"
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# include "virsocketaddr.h"
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# include "virnetlink.h"
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# include "virmacaddr.h"
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# include "virpci.h"
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# include "device_conf.h"
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# ifdef HAVE_STRUCT_IFREQ
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typedef struct ifreq virIfreq;
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# else
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typedef void virIfreq;
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# endif
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typedef enum {
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VIR_NETDEV_RX_FILTER_MODE_NONE = 0,
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VIR_NETDEV_RX_FILTER_MODE_NORMAL,
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VIR_NETDEV_RX_FILTER_MODE_ALL,
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VIR_NETDEV_RX_FILTER_MODE_LAST
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} virNetDevRxFilterMode;
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VIR_ENUM_DECL(virNetDevRxFilterMode)
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typedef struct _virNetDevRxFilter virNetDevRxFilter;
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typedef virNetDevRxFilter *virNetDevRxFilterPtr;
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struct _virNetDevRxFilter {
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char *name; /* the alias used by qemu, *not* name used by guest */
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virMacAddr mac;
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bool promiscuous;
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bool broadcastAllowed;
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struct {
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int mode; /* enum virNetDevRxFilterMode */
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bool overflow;
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virMacAddrPtr table;
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size_t nTable;
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} unicast;
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struct {
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int mode; /* enum virNetDevRxFilterMode */
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bool overflow;
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virMacAddrPtr table;
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size_t nTable;
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} multicast;
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struct {
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int mode; /* enum virNetDevRxFilterMode */
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unsigned int *table;
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size_t nTable;
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} vlan;
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};
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int virNetDevSetupControl(const char *ifname,
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virIfreq *ifr)
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ATTRIBUTE_RETURN_CHECK;
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int virNetDevExists(const char *brname)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_RETURN_CHECK;
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int virNetDevSetOnline(const char *ifname,
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bool online)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_RETURN_CHECK;
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int virNetDevGetOnline(const char *ifname,
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bool *online)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_RETURN_CHECK;
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int virNetDevSetIPAddress(const char *ifname,
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virSocketAddr *addr,
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unsigned int prefix)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_RETURN_CHECK;
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int virNetDevAddRoute(const char *ifname,
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virSocketAddrPtr addr,
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unsigned int prefix,
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virSocketAddrPtr gateway,
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unsigned int metric)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(4)
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ATTRIBUTE_RETURN_CHECK;
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int virNetDevClearIPAddress(const char *ifname,
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virSocketAddr *addr,
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unsigned int prefix)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_RETURN_CHECK;
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int virNetDevGetIPAddress(const char *ifname, virSocketAddrPtr addr)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_RETURN_CHECK;
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int virNetDevWaitDadFinish(virSocketAddrPtr *addrs, size_t count)
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ATTRIBUTE_NONNULL(1);
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int virNetDevSetMAC(const char *ifname,
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const virMacAddr *macaddr)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_RETURN_CHECK;
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int virNetDevGetMAC(const char *ifname,
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virMacAddrPtr macaddr)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_RETURN_CHECK;
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int virNetDevReplaceMacAddress(const char *linkdev,
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const virMacAddr *macaddress,
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const char *stateDir)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_NONNULL(3)
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ATTRIBUTE_RETURN_CHECK;
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int virNetDevRestoreMacAddress(const char *linkdev,
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const char *stateDir)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_RETURN_CHECK;
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int virNetDevSetMTU(const char *ifname,
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int mtu)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_RETURN_CHECK;
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int virNetDevSetMTUFromDevice(const char *ifname,
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const char *otherifname)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_RETURN_CHECK;
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int virNetDevGetMTU(const char *ifname)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_RETURN_CHECK;
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int virNetDevSetNamespace(const char *ifname, pid_t pidInNs)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_RETURN_CHECK;
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int virNetDevSetName(const char *ifname, const char *newifname)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_RETURN_CHECK;
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int virNetDevGetIndex(const char *ifname, int *ifindex)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_RETURN_CHECK;
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int virNetDevGetVLanID(const char *ifname, int *vlanid)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_RETURN_CHECK;
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int virNetDevValidateConfig(const char *ifname,
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const virMacAddr *macaddr, int ifindex)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_RETURN_CHECK;
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int virNetDevIsVirtualFunction(const char *ifname)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_RETURN_CHECK;
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int virNetDevGetVirtualFunctionIndex(const char *pfname, const char *vfname,
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int *vf_index)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_NONNULL(3)
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ATTRIBUTE_RETURN_CHECK;
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int virNetDevGetPhysicalFunction(const char *ifname, char **pfname)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_RETURN_CHECK;
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int virNetDevGetVirtualFunctions(const char *pfname,
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char ***vfname,
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virPCIDeviceAddressPtr **virt_fns,
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size_t *n_vfname,
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unsigned int *max_vfs)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_NONNULL(3)
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ATTRIBUTE_NONNULL(4) ATTRIBUTE_NONNULL(5) ATTRIBUTE_RETURN_CHECK;
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int virNetDevLinkDump(const char *ifname, int ifindex,
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void **nlData, struct nlattr **tb,
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uint32_t src_pid, uint32_t dst_pid)
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ATTRIBUTE_RETURN_CHECK;
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int virNetDevReplaceNetConfig(const char *linkdev, int vf,
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const virMacAddr *macaddress, int vlanid,
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const char *stateDir)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(3) ATTRIBUTE_NONNULL(5);
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int virNetDevRestoreNetConfig(const char *linkdev, int vf, const char *stateDir)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(3);
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int virNetDevGetVirtualFunctionInfo(const char *vfname, char **pfname,
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int *vf)
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ATTRIBUTE_NONNULL(1);
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int virNetDevGetFeatures(const char *ifname,
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virBitmapPtr *out)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_RETURN_CHECK;
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int virNetDevGetLinkInfo(const char *ifname,
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virInterfaceLinkPtr lnk)
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ATTRIBUTE_NONNULL(1);
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virNetDevRxFilterPtr virNetDevRxFilterNew(void)
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ATTRIBUTE_RETURN_CHECK;
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void virNetDevRxFilterFree(virNetDevRxFilterPtr filter);
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int virNetDevGetRxFilter(const char *ifname,
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virNetDevRxFilterPtr *filter)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_RETURN_CHECK;
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int virNetDevAddMulti(const char *ifname,
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virMacAddrPtr macaddr)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_RETURN_CHECK;
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int virNetDevDelMulti(const char *ifname,
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virMacAddrPtr macaddr)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_RETURN_CHECK;
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int virNetDevSetPromiscuous(const char *ifname, bool promiscuous)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_RETURN_CHECK;
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int virNetDevGetPromiscuous(const char *ifname, bool *promiscuous)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_RETURN_CHECK;
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int virNetDevSetRcvMulti(const char *ifname, bool receive)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_RETURN_CHECK;
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int virNetDevGetRcvMulti(const char *ifname, bool *receive)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_RETURN_CHECK;
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int virNetDevSetRcvAllMulti(const char *ifname, bool receive)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_RETURN_CHECK;
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int virNetDevGetRcvAllMulti(const char *ifname, bool *receive)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_RETURN_CHECK;
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# define SYSFS_NET_DIR "/sys/class/net/"
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# define SYSFS_INFINIBAND_DIR "/sys/class/infiniband/"
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int virNetDevSysfsFile(char **pf_sysfs_device_link,
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const char *ifname,
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const char *file)
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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_H__ */
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