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Move functions for dealing with physical/virtual devices

Browse Source 
Move virNetDevIsVirtualFunction, virNetDevGetVirtualFunctionIndex
and virNetDevGetPhysicalFunction to virnetdev.c

* src/util/interface.c, src/util/interface.h, src/util/virnetdev.c,
  src/util/virnetdev.h: Move APIs
This commit is contained in:
Daniel P. Berrange 2011-11-03 12:40:33 +00:00
parent 8f688c85af
commit 74b32b6297
4 changed files with 158 additions and 159 deletions
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146
src/util/interface.c
View File

@ -45,7 +45,6 @@
#include "virfile.h"
#include "memory.h"
#include "netlink.h"
#include "pci.h"
#include "logging.h"
#include "virnetdev.h"
@ -295,148 +294,3 @@ ifaceGetNthParent(int ifindex ATTRIBUTE_UNUSED,
}
#endif
#ifdef __linux__
static int
virNetDevSysfsFile(char **pf_sysfs_device_link, const char *ifname,
const char *file)
{
if (virAsprintf(pf_sysfs_device_link, NET_SYSFS "%s/%s",
ifname, file) < 0) {
virReportOOMError();
return -1;
}
return 0;
}
static int
virNetDevSysfsDeviceFile(char **pf_sysfs_device_link, const char *ifname,
const char *file)
{
if (virAsprintf(pf_sysfs_device_link, NET_SYSFS "%s/device/%s",
ifname, file) < 0) {
virReportOOMError();
return -1;
}
return 0;
}
/**
* virNetDevIsVirtualFunction:
* @ifname : name of the interface
*
* Checks if an interface is a SRIOV virtual function.
*
* Returns 1 if interface is SRIOV virtual function, 0 if not and -1 if error
*
*/
int
virNetDevIsVirtualFunction(const char *ifname)
{
char *if_sysfs_device_link = NULL;
int ret = -1;
if (virNetDevSysfsFile(&if_sysfs_device_link, ifname, "device") < 0)
return ret;
ret = pciDeviceIsVirtualFunction(if_sysfs_device_link);
VIR_FREE(if_sysfs_device_link);
return ret;
}
/**
* virNetDevGetVirtualFunctionIndex
*
* @pfname : name of the physical function interface name
* @vfname : name of the virtual function interface name
* @vf_index : Pointer to int. Contains vf index of interface upon successful
* return
*
* Returns 0 on success, -1 on failure
*
*/
int
virNetDevGetVirtualFunctionIndex(const char *pfname, const char *vfname,
int *vf_index)
{
char *pf_sysfs_device_link = NULL, *vf_sysfs_device_link = NULL;
int ret = -1;
if (virNetDevSysfsFile(&pf_sysfs_device_link, pfname, "device") < 0)
return ret;
if (virNetDevSysfsFile(&vf_sysfs_device_link, vfname, "device") < 0) {
VIR_FREE(pf_sysfs_device_link);
return ret;
}
ret = pciGetVirtualFunctionIndex(pf_sysfs_device_link,
vf_sysfs_device_link,
vf_index);
VIR_FREE(pf_sysfs_device_link);
VIR_FREE(vf_sysfs_device_link);
return ret;
}
/**
* virNetDevGetPhysicalFunction
*
* @ifname : name of the physical function interface name
* @pfname : Contains sriov physical function for interface ifname
* upon successful return
*
* Returns 0 on success, -1 on failure
*
*/
int
virNetDevGetPhysicalFunction(const char *ifname, char **pfname)
{
char *physfn_sysfs_path = NULL;
int ret = -1;
if (virNetDevSysfsDeviceFile(&physfn_sysfs_path, ifname, "physfn") < 0)
return ret;
ret = pciDeviceNetName(physfn_sysfs_path, pfname);
VIR_FREE(physfn_sysfs_path);
return ret;
}
#else /* !__linux__ */
int
virNetDevIsVirtualFunction(const char *ifname ATTRIBUTE_UNUSED)
{
virReportSystemError(ENOSYS, "%s",
_("Unable to check virtual function status on this platfornm"));
return -1;
}
int
virNetDevGetVirtualFunctionIndex(const char *pfname ATTRIBUTE_UNUSED,
const char *vfname ATTRIBUTE_UNUSED,
int *vf_index ATTRIBUTE_UNUSED)
{
virReportSystemError(ENOSYS, "%s",
_("Unable to get virtual function index on this platfornm"));
return -1;
}
int
virNetDevGetPhysicalFunction(const char *ifname ATTRIBUTE_UNUSED,
char **pfname ATTRIBUTE_UNUSED)
{
virReportSystemError(ENOSYS, "%s",
_("Unable to get physical function status on this platfornm"));
return -1;
}
#endif /* !__linux__ */

13
src/util/interface.h
View File

@ -27,8 +27,6 @@ struct nlattr;
# include "datatypes.h"
# include "virsocketaddr.h"
# define NET_SYSFS "/sys/class/net/"
int ifaceMacvtapLinkDump(bool nltarget_kernel, const char *ifname, int ifindex,
struct nlattr **tb, unsigned char **recvbuf,
@ -40,15 +38,4 @@ int ifaceGetNthParent(int ifindex, const char *ifname, unsigned int nthParent,
ATTRIBUTE_NONNULL(2) ATTRIBUTE_NONNULL(4) ATTRIBUTE_NONNULL(5)
ATTRIBUTE_NONNULL(6);
int virNetDevIsVirtualFunction(const char *ifname)
ATTRIBUTE_NONNULL(1) ATTRIBUTE_RETURN_CHECK;
int virNetDevGetVirtualFunctionIndex(const char *pfname, const char *vfname,
int *vf_index)
ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_NONNULL(3)
ATTRIBUTE_RETURN_CHECK;
int virNetDevGetPhysicalFunction(const char *ifname, char **pfname)
ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_RETURN_CHECK;
#endif /* __VIR_INTERFACE_H__ */

148
src/util/virnetdev.c
View File

@ -27,6 +27,7 @@
#include "virterror_internal.h"
#include "command.h"
#include "memory.h"
#include "pci.h"
#include <sys/ioctl.h>
#ifdef HAVE_NET_IF_H
@ -933,3 +934,150 @@ int virNetDevValidateConfig(const char *ifname ATTRIBUTE_UNUSED,
return -1;
}
#endif /* ! __linux__ */
#ifdef __linux__
# define NET_SYSFS "/sys/class/net/"
static int
virNetDevSysfsFile(char **pf_sysfs_device_link, const char *ifname,
const char *file)
{
if (virAsprintf(pf_sysfs_device_link, NET_SYSFS "%s/%s",
ifname, file) < 0) {
virReportOOMError();
return -1;
}
return 0;
}
static int
virNetDevSysfsDeviceFile(char **pf_sysfs_device_link, const char *ifname,
const char *file)
{
if (virAsprintf(pf_sysfs_device_link, NET_SYSFS "%s/device/%s",
ifname, file) < 0) {
virReportOOMError();
return -1;
}
return 0;
}
/**
* virNetDevIsVirtualFunction:
* @ifname : name of the interface
*
* Checks if an interface is a SRIOV virtual function.
*
* Returns 1 if interface is SRIOV virtual function, 0 if not and -1 if error
*
*/
int
virNetDevIsVirtualFunction(const char *ifname)
{
char *if_sysfs_device_link = NULL;
int ret = -1;
if (virNetDevSysfsFile(&if_sysfs_device_link, ifname, "device") < 0)
return ret;
ret = pciDeviceIsVirtualFunction(if_sysfs_device_link);
VIR_FREE(if_sysfs_device_link);
return ret;
}
/**
* virNetDevGetVirtualFunctionIndex
*
* @pfname : name of the physical function interface name
* @vfname : name of the virtual function interface name
* @vf_index : Pointer to int. Contains vf index of interface upon successful
* return
*
* Returns 0 on success, -1 on failure
*
*/
int
virNetDevGetVirtualFunctionIndex(const char *pfname, const char *vfname,
int *vf_index)
{
char *pf_sysfs_device_link = NULL, *vf_sysfs_device_link = NULL;
int ret = -1;
if (virNetDevSysfsFile(&pf_sysfs_device_link, pfname, "device") < 0)
return ret;
if (virNetDevSysfsFile(&vf_sysfs_device_link, vfname, "device") < 0) {
VIR_FREE(pf_sysfs_device_link);
return ret;
}
ret = pciGetVirtualFunctionIndex(pf_sysfs_device_link,
vf_sysfs_device_link,
vf_index);
VIR_FREE(pf_sysfs_device_link);
VIR_FREE(vf_sysfs_device_link);
return ret;
}
/**
* virNetDevGetPhysicalFunction
*
* @ifname : name of the physical function interface name
* @pfname : Contains sriov physical function for interface ifname
* upon successful return
*
* Returns 0 on success, -1 on failure
*
*/
int
virNetDevGetPhysicalFunction(const char *ifname, char **pfname)
{
char *physfn_sysfs_path = NULL;
int ret = -1;
if (virNetDevSysfsDeviceFile(&physfn_sysfs_path, ifname, "physfn") < 0)
return ret;
ret = pciDeviceNetName(physfn_sysfs_path, pfname);
VIR_FREE(physfn_sysfs_path);
return ret;
}
#else /* !__linux__ */
int
virNetDevIsVirtualFunction(const char *ifname ATTRIBUTE_UNUSED)
{
virReportSystemError(ENOSYS, "%s",
_("Unable to check virtual function status on this platfornm"));
return -1;
}
int
virNetDevGetVirtualFunctionIndex(const char *pfname ATTRIBUTE_UNUSED,
const char *vfname ATTRIBUTE_UNUSED,
int *vf_index ATTRIBUTE_UNUSED)
{
virReportSystemError(ENOSYS, "%s",
_("Unable to get virtual function index on this platfornm"));
return -1;
}
int
virNetDevGetPhysicalFunction(const char *ifname ATTRIBUTE_UNUSED,
char **pfname ATTRIBUTE_UNUSED)
{
virReportSystemError(ENOSYS, "%s",
_("Unable to get physical function status on this platfornm"));
return -1;
}
#endif /* !__linux__ */

10
src/util/virnetdev.h
View File

@ -88,5 +88,15 @@ int virNetDevValidateConfig(const char *ifname,
const unsigned char *macaddr, int ifindex)
ATTRIBUTE_NONNULL(1) ATTRIBUTE_RETURN_CHECK;
int virNetDevIsVirtualFunction(const char *ifname)
ATTRIBUTE_NONNULL(1) ATTRIBUTE_RETURN_CHECK;
int virNetDevGetVirtualFunctionIndex(const char *pfname, const char *vfname,
int *vf_index)
ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_NONNULL(3)
ATTRIBUTE_RETURN_CHECK;
int virNetDevGetPhysicalFunction(const char *ifname, char **pfname)
ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_RETURN_CHECK;
#endif /* __VIR_NETDEV_H__ */