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ionic: add Rx dropped packet counter

Browse source 
Add a counter for packets dropped by the driver, typically
for bad size or a receive error seen by the device.

Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Shannon Nelson 2020-01-06 19:43:47 -08:00 committed by David S. Miller
parent 3daca28f15
commit 24cfa8c762
3 changed files with 11 additions and 3 deletions
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1
drivers/net/ethernet/pensando/ionic/ionic_lif.h
View file

@ -37,6 +37,7 @@ struct ionic_rx_stats {
u64 csum_complete;
u64 csum_error;
u64 buffers_posted;
u64 dropped;
};
#define IONIC_QCQ_F_INITED BIT(0)

1
drivers/net/ethernet/pensando/ionic/ionic_stats.c
View file

@ -39,6 +39,7 @@ static const struct ionic_stat_desc ionic_rx_stats_desc[] = {
IONIC_RX_STAT_DESC(csum_none),
IONIC_RX_STAT_DESC(csum_complete),
IONIC_RX_STAT_DESC(csum_error),
IONIC_RX_STAT_DESC(dropped),
};
static const struct ionic_stat_desc ionic_txq_stats_desc[] = {

12
drivers/net/ethernet/pensando/ionic/ionic_txrx.c
View file

@ -152,12 +152,16 @@ static void ionic_rx_clean(struct ionic_queue *q, struct ionic_desc_info *desc_i
stats = q_to_rx_stats(q);
netdev = q->lif->netdev;
if (comp->status)
if (comp->status) {
stats->dropped++;
return;
}
/* no packet processing while resetting */
if (unlikely(test_bit(IONIC_LIF_QUEUE_RESET, q->lif->state)))
if (unlikely(test_bit(IONIC_LIF_QUEUE_RESET, q->lif->state))) {
stats->dropped++;
return;
}
stats->pkts++;
stats->bytes += le16_to_cpu(comp->len);
@ -167,8 +171,10 @@ static void ionic_rx_clean(struct ionic_queue *q, struct ionic_desc_info *desc_i
else
skb = ionic_rx_frags(q, desc_info, cq_info);
if (unlikely(!skb))
if (unlikely(!skb)) {
stats->dropped++;
return;
}
skb_record_rx_queue(skb, q->index);