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nfp: flush xmit_more on error paths

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In case of ring full or DMA mapping error remember to flush xmit_more
delayed kicks.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jakub Kicinski 2017-03-21 17:59:19 -07:00 committed by David S. Miller
parent 83d08a1d74
commit 28b0cfee7b
1 changed files with 2 additions and 0 deletions
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2
drivers/net/ethernet/netronome/nfp/nfp_net_common.c
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@ -759,6 +759,7 @@ static int nfp_net_tx(struct sk_buff *skb, struct net_device *netdev)
nn_dp_warn(dp, "TX ring %d busy. wrp=%u rdp=%u\n",
qidx, tx_ring->wr_p, tx_ring->rd_p);
netif_tx_stop_queue(nd_q);
nfp_net_tx_xmit_more_flush(tx_ring);
u64_stats_update_begin(&r_vec->tx_sync);
r_vec->tx_busy++;
u64_stats_update_end(&r_vec->tx_sync);
@ -867,6 +868,7 @@ static int nfp_net_tx(struct sk_buff *skb, struct net_device *netdev)
tx_ring->txbufs[wr_idx].fidx = -2;
err_free:
nn_dp_warn(dp, "Failed to map DMA TX buffer\n");
nfp_net_tx_xmit_more_flush(tx_ring);
u64_stats_update_begin(&r_vec->tx_sync);
r_vec->tx_errors++;
u64_stats_update_end(&r_vec->tx_sync);