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be2net: Fix TX stats for TSO packets 

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;