iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

net: mana: Add handling of CQE_RX_TRUNCATED

Browse Source 
commit e4b7621982d29f26ff4d39af389e5e675a4ffed4 upstream.

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

Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Reviewed-by: Dexuan Cui <decui@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Haiyang Zhang 2022-02-04 14:45:44 -08:00 committed by Greg Kroah-Hartman
parent 7fd1d00285
commit 04dcef44f6
1 changed files with 5 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/net/ethernet/microsoft/mana/mana_en.c
View File

@ -980,8 +980,10 @@ static void mana_process_rx_cqe(struct mana_rxq *rxq, struct mana_cq *cq,
break;
case CQE_RX_TRUNCATED:
netdev_err(ndev, "Dropped a truncated packet\n");
return;
++ndev->stats.rx_dropped;
rxbuf_oob = &rxq->rx_oobs[rxq->buf_index];
netdev_warn_once(ndev, "Dropped a truncated packet\n");
goto drop;
case CQE_RX_COALESCED_4:
netdev_err(ndev, "RX coalescing is unsupported\n");
@ -1043,6 +1045,7 @@ static void mana_process_rx_cqe(struct mana_rxq *rxq, struct mana_cq *cq,
mana_rx_skb(old_buf, oob, rxq);
drop:
mana_move_wq_tail(rxq->gdma_rq, rxbuf_oob->wqe_inf.wqe_size_in_bu);
mana_post_pkt_rxq(rxq);