SMB_DF_ASYNC
if ((hdr->dh_flags & SMB_DF_ASYNC) != 0)
hdr->dh_flags &= ~SMB_DF_ASYNC;
if (hdr->dh_flags & SMB_DF_ASYNC) {
if ((req_arg->hdr.dh_flags & SMB_DF_ASYNC) == 0) {
(hdr->dh_flags & SMB_DF_ASYNC)) {
da.da_flags = SMB_DF_ASYNC;
if (da.da_flags & SMB_DF_ASYNC) {
da.da_flags &= ~SMB_DF_ASYNC;