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netvsc: account for packets/bytes transmitted after completion

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Most drivers do not increment transmit statistics until after the
transmit is completed. This will also be necessary for BQL support.

Slight additional complexity because the netvsc driver aggregates
multiple packets into one transmit.

Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
stephen hemminger
2017-01-24 13:06:12 -08:00
committed by David S. Miller
parent 46b4f7f5d1
commit 793e395555
3 changed files with 22 additions and 14 deletions
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19
drivers/net/hyperv/netvsc.c
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@@ -611,15 +611,23 @@ static void netvsc_send_tx_complete(struct netvsc_device *net_device,
/* Notify the layer above us */
if (likely(skb)) {
struct hv_netvsc_packet *nvsc_packet
const struct hv_netvsc_packet *packet
= (struct hv_netvsc_packet *)skb->cb;
u32 send_index = nvsc_packet->send_buf_index;
u32 send_index = packet->send_buf_index;
struct netvsc_stats *tx_stats;
if (send_index != NETVSC_INVALID_INDEX)
netvsc_free_send_slot(net_device, send_index);
q_idx = nvsc_packet->q_idx;
q_idx = packet->q_idx;
channel = incoming_channel;
tx_stats = this_cpu_ptr(net_device_ctx->tx_stats);
u64_stats_update_begin(&tx_stats->syncp);
tx_stats->packets += packet->total_packets;
tx_stats->bytes += packet->total_bytes;
u64_stats_update_end(&tx_stats->syncp);
dev_consume_skb_any(skb);
}
@@ -924,6 +932,11 @@ int netvsc_send(struct hv_device *device,
packet->total_data_buflen += msd_len;
}
if (msdp->pkt) {
packet->total_packets += msdp->pkt->total_packets;
packet->total_bytes += msdp->pkt->total_bytes;
}
if (msdp->skb)
dev_consume_skb_any(msdp->skb);