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net: ena: add support for reporting of packet drops 

1. Add support for getting tx drops from the device and saving them
in the driver.
2. Report tx via netdev stats.

Signed-off-by: Igor Chauskin <igorch@amazon.com>
Signed-off-by: Guy Tzalik <gtzalik@amazon.com>
Signed-off-by: Arthur Kiyanovski <akiyano@amazon.com>
Signed-off-by: Sameeh Jubran <sameehj@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Sameeh Jubran 2020-05-03 09:52:17 +00:00 committed by David S. Miller
parent d4a8b3bb0b
commit 5c665f8c59
3 changed files with 15 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/net/ethernet/amazon/ena/ena_admin_defs.h
View File

@ -404,6 +404,10 @@ struct ena_admin_basic_stats {
u32 rx_drops_low;
u32 rx_drops_high;
u32 tx_drops_low;
u32 tx_drops_high;
};
struct ena_admin_acq_get_stats_resp {
@ -1017,6 +1021,10 @@ struct ena_admin_aenq_keep_alive_desc {
u32 rx_drops_low;
u32 rx_drops_high;
u32 tx_drops_low;
u32 tx_drops_high;
};
struct ena_admin_ena_mmio_req_read_less_resp {

6
drivers/net/ethernet/amazon/ena/ena_netdev.c
View File

@ -3172,6 +3172,7 @@ static void ena_get_stats64(struct net_device *netdev,
struct ena_ring *rx_ring, *tx_ring;
unsigned int start;
u64 rx_drops;
u64 tx_drops;
int i;
if (!test_bit(ENA_FLAG_DEV_UP, &adapter->flags))
@ -3206,9 +3207,11 @@ static void ena_get_stats64(struct net_device *netdev,
do {
start = u64_stats_fetch_begin_irq(&adapter->syncp);
rx_drops = adapter->dev_stats.rx_drops;
tx_drops = adapter->dev_stats.tx_drops;
} while (u64_stats_fetch_retry_irq(&adapter->syncp, start));
stats->rx_dropped = rx_drops;
stats->tx_dropped = tx_drops;
stats->multicast = 0;
stats->collisions = 0;
@ -4517,14 +4520,17 @@ static void ena_keep_alive_wd(void *adapter_data,
struct ena_adapter *adapter = (struct ena_adapter *)adapter_data;
struct ena_admin_aenq_keep_alive_desc *desc;
u64 rx_drops;
u64 tx_drops;
desc = (struct ena_admin_aenq_keep_alive_desc *)aenq_e;
adapter->last_keep_alive_jiffies = jiffies;
rx_drops = ((u64)desc->rx_drops_high << 32) | desc->rx_drops_low;
tx_drops = ((u64)desc->tx_drops_high << 32) | desc->tx_drops_low;
u64_stats_update_begin(&adapter->syncp);
adapter->dev_stats.rx_drops = rx_drops;
adapter->dev_stats.tx_drops = tx_drops;
u64_stats_update_end(&adapter->syncp);
}

1
drivers/net/ethernet/amazon/ena/ena_netdev.h
View File

@ -334,6 +334,7 @@ struct ena_stats_dev {
u64 interface_down;
u64 admin_q_pause;
u64 rx_drops;
u64 tx_drops;
};
enum ena_flags_t {