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s390/qeth: overhaul ethtool statistics

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Accumulate per-TX queue statistics, and increase their size to 64 bit.
Don't bother with enabling/disabling the statistics, the overhead is
negligible.

Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Julian Wiedmann
2019-02-15 19:22:29 +01:00
committed by David S. Miller
parent d896ac62d0
commit b0abc4f5df
6 changed files with 256 additions and 216 deletions
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28
drivers/s390/net/qeth_l2_main.c
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@@ -174,9 +174,9 @@ static int qeth_l2_get_cast_type(struct qeth_card *card, struct sk_buff *skb)
return RTN_UNICAST;
}
static void qeth_l2_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
struct sk_buff *skb, int ipv, int cast_type,
unsigned int data_len)
static void qeth_l2_fill_header(struct qeth_qdio_out_q *queue,
struct qeth_hdr *hdr, struct sk_buff *skb,
int ipv, int cast_type, unsigned int data_len)
{
struct vlan_ethhdr *veth = vlan_eth_hdr(skb);
@@ -188,8 +188,7 @@ static void qeth_l2_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2;
if (skb->ip_summed == CHECKSUM_PARTIAL) {
qeth_tx_csum(skb, &hdr->hdr.l2.flags[1], ipv);
if (card->options.performance_stats)
card->perf_stats.tx_csum++;
QETH_TXQ_STAT_INC(queue, skbs_csum);
}
}
@@ -369,8 +368,8 @@ static int qeth_l2_process_inbound_buffer(struct qeth_card *card,
}
work_done++;
budget--;
card->stats.rx_packets++;
card->stats.rx_bytes += len;
QETH_CARD_STAT_INC(card, rx_packets);
QETH_CARD_STAT_ADD(card, rx_bytes, len);
}
return work_done;
}
@@ -626,12 +625,13 @@ static netdev_tx_t qeth_l2_hard_start_xmit(struct sk_buff *skb,
int tx_bytes = skb->len;
int rc;
queue = qeth_get_tx_queue(card, skb, ipv, cast_type);
if (card->state != CARD_STATE_UP) {
card->stats.tx_carrier_errors++;
QETH_TXQ_STAT_INC(queue, tx_carrier_errors);
goto tx_drop;
}
queue = qeth_get_tx_queue(card, skb, ipv, cast_type);
netif_stop_queue(dev);
if (IS_OSN(card))
@@ -641,8 +641,8 @@ static netdev_tx_t qeth_l2_hard_start_xmit(struct sk_buff *skb,
qeth_l2_fill_header);
if (!rc) {
card->stats.tx_packets++;
card->stats.tx_bytes += tx_bytes;
QETH_TXQ_STAT_INC(queue, tx_packets);
QETH_TXQ_STAT_ADD(queue, tx_bytes, tx_bytes);
netif_wake_queue(dev);
return NETDEV_TX_OK;
} else if (rc == -EBUSY) {
@@ -650,8 +650,8 @@ static netdev_tx_t qeth_l2_hard_start_xmit(struct sk_buff *skb,
} /* else fall through */
tx_drop:
card->stats.tx_dropped++;
card->stats.tx_errors++;
QETH_TXQ_STAT_INC(queue, tx_dropped);
QETH_TXQ_STAT_INC(queue, tx_errors);
dev_kfree_skb_any(skb);
netif_wake_queue(dev);
return NETDEV_TX_OK;
@@ -699,7 +699,7 @@ static void qeth_l2_remove_device(struct ccwgroup_device *cgdev)
static const struct net_device_ops qeth_l2_netdev_ops = {
.ndo_open = qeth_open,
.ndo_stop = qeth_stop,
.ndo_get_stats = qeth_get_stats,
.ndo_get_stats64 = qeth_get_stats64,
.ndo_start_xmit = qeth_l2_hard_start_xmit,
.ndo_features_check = qeth_features_check,
.ndo_validate_addr = qeth_l2_validate_addr,