[Libvir] [PATCH] Block device and network stats (version 2)

This patch adds block device and network stats. The main changes over the previous version are: * Remote support. * Change Xen network interface names to have the form "vif<domid>.<n>"[1]. Discussions about the previous version may be found starting here: https://www.redhat.com/archives/libvir-list/2007-August/thread.html#00064 I have left use of stdint.h / int64_t, since it wasn't clear to me what conclusion people had arrived at. I left the explicit structure size parameter to allow for future extensibility. Also attached is the output of: virsh -c xen+tls://amd/ domifstat fc6_1 vif2.0 Rich. [1] There is currently no way to get the interface name except to just know it -- that is the subject of a separate patch. -- Emerging Technologies, Red Hat - http://et.redhat.com/~rjones/ Registered Address: Red Hat UK Ltd, Amberley Place, 107-111 Peascod Street, Windsor, Berkshire, SL4 1TE, United Kingdom. Registered in England and Wales under Company Registration No. 03798903 libvirt: virConnectOpen (name=xen+tls://amd/) libvirt: virInitialize () libvirt: virInitialize () libvirt: virInitialize () libvirt: virInitialize () libvirt: virInitialize () libvirt: virInitialize () libvirt: virInitialize () libvirt: virInitialize () libvirt: virInitialize () libvirt: do_open: proceeding with name=xen+tls://amd/ libvirt: do_open: trying driver 0 (Test) ... libvirt: do_open: driver 0 Test returned DECLINED libvirt: do_open: trying driver 1 (QEMU) ... libvirt: do_open: driver 1 QEMU returned DECLINED libvirt: do_open: trying driver 2 (Xen) ... libvirt: do_open: driver 2 Xen returned DECLINED libvirt: do_open: trying driver 3 (remote) ... libvirt: do_open: driver 3 remote returned SUCCESS libvirt: do_open: network driver 0 Test returned DECLINED libvirt: do_open: network driver 1 QEMU returned DECLINED libvirt: do_open: network driver 2 remote returned SUCCESS libvirt: virDomainLookupByName (conn=0x130ee020, name=fc6_1) libvirt: virDomainInterfaceStats (domain=0x13129bd0, path=vif2.0, stats=0x7fff688e6e20, size=64) libvirt: virDomainFree (domain=0x13129bd0) libvirt: virConnectClose (conn=0x130ee020) vif2.0 rx_bytes 18591 vif2.0 rx_packets 113 vif2.0 rx_errs 0 vif2.0 rx_drop 0 vif2.0 tx_bytes 125319 vif2.0 tx_packets 962 vif2.0 tx_errs 0 vif2.0 tx_drop 0