From: Dariusz Stojaczyk <[email protected]>
Always attempt to find already opened fd for an iommu
group as subsequent attempts to open it will fail.
There's no public API to check if a group was already
bound and has a container, so rte_vfio_container_group_bind()
shouldn't fail in such case.
Fixes: ea2dc1066870 ("vfio: add multi container support")
Cc: [email protected]
Signed-off-by: Dariusz Stojaczyk <[email protected]>
---
lib/librte_eal/linuxapp/eal/eal_vfio.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/lib/librte_eal/linuxapp/eal/eal_vfio.c
b/lib/librte_eal/linuxapp/eal/eal_vfio.c
index c68dc38e0..bcb869be1 100644
--- a/lib/librte_eal/linuxapp/eal/eal_vfio.c
+++ b/lib/librte_eal/linuxapp/eal/eal_vfio.c
@@ -1680,6 +1680,11 @@ rte_vfio_container_group_bind(int container_fd, int
iommu_group_num)
return -1;
}
+ /* check if we already have the group descriptor open */
+ for (i = 0; i < VFIO_MAX_GROUPS; i++)
+ if (vfio_cfg->vfio_groups[i].group_num == iommu_group_num)
+ return vfio_cfg->vfio_groups[i].fd;
+
/* Check room for new group */
if (vfio_cfg->vfio_active_groups == VFIO_MAX_GROUPS) {
RTE_LOG(ERR, EAL, "Maximum number of VFIO groups reached!\n");
--
2.17.1
