brcmf_flowring_qlen
u32 brcmf_flowring_qlen(struct brcmf_flowring *flow, u16 flowid);
qlen = brcmf_flowring_qlen(msgbuf->flow, flowid);
while (brcmf_flowring_qlen(flow, flowid)) {
brcmf_flowring_qlen(flow, flowid));