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https://github.com/xen-project/xen.git
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Boris Ostrovsky
e78e8b9bb6
.. and use this new interface to display it along with CPU topology and NUMA information when 'xl info -n' command is issued The output will look like ... cpu_topology : cpu: core socket node 0: 0 0 0 ... device topology : device node 0000:00:00.0 0 0000:00:01.0 0 ... Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com> Acked-by: Ian Campbell <ian.campbell@citrix.com>
146 lines
4.0 KiB
C
146 lines
4.0 KiB
C
/*
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* Copyright (C) 2014
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* Author Roger Pau Monne <roger.pau@entel.upc.edu>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published
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* by the Free Software Foundation; version 2.1 only. with the special
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* exception on linking described in file LICENSE.
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*
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* This program 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
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* GNU Lesser General Public License for more details.
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*/
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#include "libxl_osdeps.h" /* must come before any other headers */
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#include "libxl_internal.h"
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int libxl__try_phy_backend(mode_t st_mode)
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{
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if (S_ISREG(st_mode) || S_ISBLK(st_mode) || S_ISCHR(st_mode))
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return 1;
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return 0;
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}
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char *libxl__devid_to_localdev(libxl__gc *gc, int devid)
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{
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/* TODO */
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return NULL;
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}
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/* Hotplug scripts caller functions */
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static int libxl__hotplug_env_nic(libxl__gc *gc, libxl__device *dev, char ***env,
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int num_exec)
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{
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int nr = 0;
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const int arraysize = 5;
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libxl_nic_type type;
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assert(dev->backend_kind == LIBXL__DEVICE_KIND_VIF);
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/*
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* On the first pass the PV interface is added to the bridge,
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* on the second pass the tap interface will also be added.
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*/
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type = num_exec == 0 ? LIBXL_NIC_TYPE_VIF : LIBXL_NIC_TYPE_VIF_IOEMU;
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GCNEW_ARRAY(*env, arraysize);
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(*env)[nr++] = "iface_dev";
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(*env)[nr++] = (char *) libxl__device_nic_devname(gc, dev->domid,
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dev->devid, type);
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(*env)[nr++] = "emulated";
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(*env)[nr++] = type == LIBXL_NIC_TYPE_VIF_IOEMU ? "1" : "0";
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(*env)[nr++] = NULL;
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assert(nr == arraysize);
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return 0;
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}
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static int libxl__hotplug_nic(libxl__gc *gc, libxl__device *dev, char ***args,
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libxl__device_action action)
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{
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char *be_path = libxl__device_backend_path(gc, dev);
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char *script;
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int nr = 0, rc = 0, arraysize = 4;
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assert(dev->backend_kind == LIBXL__DEVICE_KIND_VIF);
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script = libxl__xs_read(gc, XBT_NULL,
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GCSPRINTF("%s/%s", be_path, "script"));
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if (!script) {
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LOGEV(ERROR, errno, "unable to read script from %s", be_path);
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rc = ERROR_FAIL;
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goto out;
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}
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GCNEW_ARRAY(*args, arraysize);
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(*args)[nr++] = script;
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(*args)[nr++] = be_path;
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(*args)[nr++] = GCSPRINTF("%s", action == LIBXL__DEVICE_ACTION_ADD ?
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"add" : "remove");
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(*args)[nr++] = NULL;
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assert(nr == arraysize);
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out:
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return rc;
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}
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int libxl__get_hotplug_script_info(libxl__gc *gc, libxl__device *dev,
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char ***args, char ***env,
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libxl__device_action action,
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int num_exec)
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{
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libxl_nic_type nictype;
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int rc;
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if (dev->backend_kind != LIBXL__DEVICE_KIND_VIF || num_exec == 2)
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return 0;
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rc = libxl__nic_type(gc, dev, &nictype);
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if (rc) {
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LOG(ERROR, "error when fetching nic type");
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rc = ERROR_FAIL;
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goto out;
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}
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/*
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* For PV domains only one pass is needed (because there's no emulated
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* interface). For HVM domains two passes are needed in order to add
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* both the PV and the tap interfaces to the bridge.
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*/
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if (nictype == LIBXL_NIC_TYPE_VIF && num_exec != 0) {
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rc = 0;
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goto out;
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}
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rc = libxl__hotplug_env_nic(gc, dev, env, num_exec);
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if (rc)
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goto out;
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rc = libxl__hotplug_nic(gc, dev, args, action);
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if (!rc) rc = 1;
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out:
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return rc;
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}
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libxl_device_model_version libxl__default_device_model(libxl__gc *gc)
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{
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return LIBXL_DEVICE_MODEL_VERSION_QEMU_XEN;
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}
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int libxl__pci_numdevs(libxl__gc *gc)
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{
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return ERROR_NI;
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}
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int libxl__pci_topology_init(libxl__gc *gc,
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physdev_pci_device_t *devs,
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int num_devs)
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{
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return ERROR_NI;
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}
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