From f38ef0fac0582ac0cbb749af9d3f8ba515a6084a Mon Sep 17 00:00:00 2001 From: Pavel Hrdina Date: Thu, 7 Mar 2019 17:52:55 +0100 Subject: [PATCH] util: skip RDMA detection for non-PCI network devices Only PCI devices have '/sys/class/net//device/resource' so we need to skip this check for all other network devices. Without this patch and RDMA enabled libvirt will not detect any network device that doesn't have the path above which includes 'lo', 'virbr', 'tun', etc. Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1639258 Reviewed-by: Andrea Bolognani Signed-off-by: Pavel Hrdina --- src/util/virnetdev.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/src/util/virnetdev.c b/src/util/virnetdev.c index aeb9caab2a..699f2a0acb 100644 --- a/src/util/virnetdev.c +++ b/src/util/virnetdev.c @@ -2914,8 +2914,14 @@ virNetDevRDMAFeature(const char *ifname, if (virAsprintf(ð_devpath, SYSFS_NET_DIR "%s/device/resource", ifname) < 0) goto cleanup; - if (!virFileExists(eth_devpath)) + + /* If /sys/class/net//device/resource doesn't exist it is not a PCI + * device and therefore it will not have RDMA. */ + if (!virFileExists(eth_devpath)) { + ret = 0; goto cleanup; + } + if (virFileReadAll(eth_devpath, RESOURCE_FILE_LEN, ð_res_buf) < 0) goto cleanup; -- 2.39.5