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be2net: Fix TX stats for TSO packets

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TX stats update does not take into account headers which get duplicated
when the TSO packet is split into segments by HW. Fix this for both
tunneled (vxlan) and non-tunneled TSO packets.

Signed-off-by: Sriharsha Basavapatna <sriharsha.basavapatna@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Sriharsha Basavapatna 2016-10-09 09:58:52 +05:30 committed by David S. Miller
parent 77b696cba9
commit f3d6ad8480
1 changed files with 12 additions and 2 deletions
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14
drivers/net/ethernet/emulex/benet/be_main.c
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@ -724,14 +724,24 @@ void be_link_status_update(struct be_adapter *adapter, u8 link_status)
netdev_info(netdev, "Link is %s\n", link_status ? "Up" : "Down");
}
static int be_gso_hdr_len(struct sk_buff *skb)
{
if (skb->encapsulation)
return skb_inner_transport_offset(skb) +
inner_tcp_hdrlen(skb);
return skb_transport_offset(skb) + tcp_hdrlen(skb);
}
static void be_tx_stats_update(struct be_tx_obj *txo, struct sk_buff *skb)
{
struct be_tx_stats *stats = tx_stats(txo);
u64 tx_pkts = skb_shinfo(skb)->gso_segs ? : 1;
u32 tx_pkts = skb_shinfo(skb)->gso_segs ? : 1;
/* Account for headers which get duplicated in TSO pkt */
u32 dup_hdr_len = tx_pkts > 1 ? be_gso_hdr_len(skb) * (tx_pkts - 1) : 0;
u64_stats_update_begin(&stats->sync);
stats->tx_reqs++;
stats->tx_bytes += skb->len;
stats->tx_bytes += skb->len + dup_hdr_len;
stats->tx_pkts += tx_pkts;
if (skb->encapsulation && skb->ip_summed == CHECKSUM_PARTIAL)
stats->tx_vxlan_offload_pkts += tx_pkts;