brcmf_proto_txdata
return brcmf_proto_txdata(drvr, ifidx, 0, skb);
rc = brcmf_proto_txdata(fws->drvr, ifidx, data_offset, skb);
ret = brcmf_proto_txdata(drvr, ifidx, 0, skb);
err = brcmf_proto_txdata(fws->drvr, ifidx, data_offset, skb);