From 4583a73470803ff74587496c5562899237bcf3b9 Mon Sep 17 00:00:00 2001 From: Jonathon Jongsma Date: Thu, 18 Jun 2020 16:05:58 -0500 Subject: [PATCH] nodedev: store mdev UUID in mdev caps In order to allow libvirt to create and start new mediated devices, we need to be able to verify that the device has been started. In order to do this, we'll need to save the UUID of newly-discovered devices within the virNodeDevCapMdev structure. This allows us to search the device list by UUID and verify whether the expected device has been started. Signed-off-by: Jonathon Jongsma Reviewed-by: Erik Skultety Reviewed-by: Michal Privoznik --- src/conf/node_device_conf.c | 1 + src/conf/node_device_conf.h | 1 + src/node_device/node_device_udev.c | 5 ++--- 3 files changed, 4 insertions(+), 3 deletions(-) diff --git a/src/conf/node_device_conf.c b/src/conf/node_device_conf.c index 623a2cb79c..78a537d0ea 100644 --- a/src/conf/node_device_conf.c +++ b/src/conf/node_device_conf.c @@ -2218,6 +2218,7 @@ virNodeDevCapsDefFree(virNodeDevCapsDefPtr caps) break; case VIR_NODE_DEV_CAP_MDEV: VIR_FREE(data->mdev.type); + VIR_FREE(data->mdev.uuid); for (i = 0; i < data->mdev.nattributes; i++) virMediatedDeviceAttrFree(data->mdev.attributes[i]); VIR_FREE(data->mdev.attributes); diff --git a/src/conf/node_device_conf.h b/src/conf/node_device_conf.h index e3e1e788d4..9b8c7aadea 100644 --- a/src/conf/node_device_conf.h +++ b/src/conf/node_device_conf.h @@ -141,6 +141,7 @@ typedef virNodeDevCapMdev *virNodeDevCapMdevPtr; struct _virNodeDevCapMdev { char *type; unsigned int iommuGroupNumber; + char *uuid; virMediatedDeviceAttrPtr *attributes; size_t nattributes; }; diff --git a/src/node_device/node_device_udev.c b/src/node_device/node_device_udev.c index 386f23ef3a..bdf0b03add 100644 --- a/src/node_device/node_device_udev.c +++ b/src/node_device/node_device_udev.c @@ -1013,7 +1013,6 @@ udevProcessMediatedDevice(struct udev_device *dev, virNodeDeviceDefPtr def) { int ret = -1; - const char *uuidstr = NULL; int iommugrp = -1; char *linkpath = NULL; char *canonicalpath = NULL; @@ -1041,8 +1040,8 @@ udevProcessMediatedDevice(struct udev_device *dev, data->type = g_path_get_basename(canonicalpath); - uuidstr = udev_device_get_sysname(dev); - if ((iommugrp = virMediatedDeviceGetIOMMUGroupNum(uuidstr)) < 0) + data->uuid = g_strdup(udev_device_get_sysname(dev)); + if ((iommugrp = virMediatedDeviceGetIOMMUGroupNum(data->uuid)) < 0) goto cleanup; if (udevGenerateDeviceName(dev, def, NULL) != 0)