[libvirt] [PATCH 32/33] Move functions for dealing with physical/virtual devices

From: "Daniel P. Berrange" <berrange(a)redhat.com&gt; 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 --- src/util/interface.c | 146 ------------------------------------------------- src/util/interface.h | 13 ----- src/util/virnetdev.c | 148 ++++++++++++++++++++++++++++++++++++++++++++++++++ src/util/virnetdev.h | 10 ++++ 4 files changed, 158 insertions(+), 159 deletions(-) diff --git a/src/util/interface.c b/src/util/interface.c index 2882511..00a873e 100644 --- a/src/util/interface.c +++ b/src/util/interface.c @@ -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__ */ diff --git a/src/util/interface.h b/src/util/interface.h index 86f9aac..141d19c 100644 --- a/src/util/interface.h +++ b/src/util/interface.h @@ -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__ */ diff --git a/src/util/virnetdev.c b/src/util/virnetdev.c index 453c343..20cb0c2 100644 --- a/src/util/virnetdev.c +++ b/src/util/virnetdev.c @@ -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__ */ diff --git a/src/util/virnetdev.h b/src/util/virnetdev.h index d2059af..6914b2a 100644 --- a/src/util/virnetdev.h +++ b/src/util/virnetdev.h @@ -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__ */ -- 1.7.6.4