Commands that are reading/writing to objects can test for an ongoing
disassociation during their initial call to rdma_lookup_get_uobject. This
directly prevents all of these commands from conflicting with an ongoing
disassociation.
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
goto free;
}
+ /*
+ * If we have been disassociated block every command except for
+ * DESTROY based commands.
+ */
+ if (mode != UVERBS_LOOKUP_DESTROY &&
+ !srcu_dereference(ufile->device->ib_dev,
+ &ufile->device->disassociate_srcu)) {
+ ret = -EIO;
+ goto free;
+ }
+
ret = uverbs_try_lock_object(uobj, mode);
if (ret)
goto free;