diff options
| author | Netanel Belgazal <netanel@amazon.com> | 2017-10-17 07:33:59 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-10-19 12:51:36 +0100 |
| commit | 11095fdb712b1aaa7ffd6ccd86d0c45d29732eec (patch) | |
| tree | 62bb3954862f5cd751255f8be8af05a1c4a22198 | |
| parent | 8c5c7abdeb2dfe4b4b28a48702c2cfa83fac15c9 (diff) | |
net: ena: add statistics for missed tx packets
Add a new statistic to ethtool stats that show the number of packets
without transmit acknowledgement from ENA device.
Signed-off-by: Netanel Belgazal <netanel@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/ethernet/amazon/ena/ena_ethtool.c | 1 | ||||
| -rw-r--r-- | drivers/net/ethernet/amazon/ena/ena_netdev.c | 30 | ||||
| -rw-r--r-- | drivers/net/ethernet/amazon/ena/ena_netdev.h | 1 |
3 files changed, 19 insertions, 13 deletions
diff --git a/drivers/net/ethernet/amazon/ena/ena_ethtool.c b/drivers/net/ethernet/amazon/ena/ena_ethtool.c index 897e638a014a..0d97311a1b26 100644 --- a/drivers/net/ethernet/amazon/ena/ena_ethtool.c +++ b/drivers/net/ethernet/amazon/ena/ena_ethtool.c @@ -81,6 +81,7 @@ static const struct ena_stats ena_stats_tx_strings[] = { ENA_STAT_TX_ENTRY(doorbells), ENA_STAT_TX_ENTRY(prepare_ctx_err), ENA_STAT_TX_ENTRY(bad_req_id), + ENA_STAT_TX_ENTRY(missed_tx), }; static const struct ena_stats ena_stats_rx_strings[] = { diff --git a/drivers/net/ethernet/amazon/ena/ena_netdev.c b/drivers/net/ethernet/amazon/ena/ena_netdev.c index adc3957df3ab..47bdbf9bdefb 100644 --- a/drivers/net/ethernet/amazon/ena/ena_netdev.c +++ b/drivers/net/ethernet/amazon/ena/ena_netdev.c @@ -2648,7 +2648,7 @@ static int check_missing_comp_in_queue(struct ena_adapter *adapter, struct ena_tx_buffer *tx_buf; unsigned long last_jiffies; u32 missed_tx = 0; - int i; + int i, rc = 0; for (i = 0; i < tx_ring->ring_size; i++) { tx_buf = &tx_ring->tx_buffer_info[i]; @@ -2662,21 +2662,25 @@ static int check_missing_comp_in_queue(struct ena_adapter *adapter, tx_buf->print_once = 1; missed_tx++; - - if (unlikely(missed_tx > adapter->missing_tx_completion_threshold)) { - netif_err(adapter, tx_err, adapter->netdev, - "The number of lost tx completions is above the threshold (%d > %d). Reset the device\n", - missed_tx, - adapter->missing_tx_completion_threshold); - adapter->reset_reason = - ENA_REGS_RESET_MISS_TX_CMPL; - set_bit(ENA_FLAG_TRIGGER_RESET, &adapter->flags); - return -EIO; - } } } - return 0; + if (unlikely(missed_tx > adapter->missing_tx_completion_threshold)) { + netif_err(adapter, tx_err, adapter->netdev, + "The number of lost tx completions is above the threshold (%d > %d). Reset the device\n", + missed_tx, + adapter->missing_tx_completion_threshold); + adapter->reset_reason = + ENA_REGS_RESET_MISS_TX_CMPL; + set_bit(ENA_FLAG_TRIGGER_RESET, &adapter->flags); + rc = -EIO; + } + + u64_stats_update_begin(&tx_ring->syncp); + tx_ring->tx_stats.missed_tx = missed_tx; + u64_stats_update_end(&tx_ring->syncp); + + return rc; } static void check_for_missing_tx_completions(struct ena_adapter *adapter) diff --git a/drivers/net/ethernet/amazon/ena/ena_netdev.h b/drivers/net/ethernet/amazon/ena/ena_netdev.h index 7b07bfbf0fe4..eafc5774dd49 100644 --- a/drivers/net/ethernet/amazon/ena/ena_netdev.h +++ b/drivers/net/ethernet/amazon/ena/ena_netdev.h @@ -185,6 +185,7 @@ struct ena_stats_tx { u64 tx_poll; u64 doorbells; u64 bad_req_id; + u64 missed_tx; }; struct ena_stats_rx { |