RDMAP_UNTAGGED_QN_SEND
qp->tx_ctx.ddp_msn[RDMAP_UNTAGGED_QN_SEND] = 0;
qp->rx_stream.ddp_msn[RDMAP_UNTAGGED_QN_SEND] = 1;
srx->ddp_msn[RDMAP_UNTAGGED_QN_SEND]++;
if (unlikely(ddp_qn != RDMAP_UNTAGGED_QN_SEND)) {
if (unlikely(ddp_msn != srx->ddp_msn[RDMAP_UNTAGGED_QN_SEND])) {
srx->ddp_msn[RDMAP_UNTAGGED_QN_SEND]);
c_tx->pkt.send.ddp_qn = RDMAP_UNTAGGED_QN_SEND;
htonl(++c_tx->ddp_msn[RDMAP_UNTAGGED_QN_SEND]);
c_tx->pkt.send.ddp_qn = RDMAP_UNTAGGED_QN_SEND;
htonl(++c_tx->ddp_msn[RDMAP_UNTAGGED_QN_SEND]);