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mana: Add handling of CQE_RX_TRUNCATED

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The proper way to drop this kind of CQE is advancing rxq tail
without indicating the packet to the upper network layer.

MFC after:	2 weeks
Sponsored by:	Microsoft
This commit is contained in:
Wei Hu 2022-02-14 23:07:31 -08:00
parent b8185579f4
commit de64aa32c8
1 changed files with 5 additions and 1 deletions
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6
sys/dev/mana/mana_en.c
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@ -1613,8 +1613,11 @@ mana_process_rx_cqe(struct mana_rxq *rxq, struct mana_cq *cq,
break;
case CQE_RX_TRUNCATED:
apc = if_getsoftc(ndev);
counter_u64_add(apc->port_stats.rx_drops, 1);
rxbuf_oob = &rxq->rx_oobs[rxq->buf_index];
if_printf(ndev, "Dropped a truncated packet\n");
return;
goto drop;
case CQE_RX_COALESCED_4:
if_printf(ndev, "RX coalescing is unsupported\n");
@ -1680,6 +1683,7 @@ mana_process_rx_cqe(struct mana_rxq *rxq, struct mana_cq *cq,
mana_rx_mbuf(old_mbuf, oob, rxq);
drop:
mana_move_wq_tail(rxq->gdma_rq, rxbuf_oob->wqe_inf.wqe_size_in_bu);
mana_post_pkt_rxq(rxq);