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ibmvnic: Fix TX descriptor tracking 

With the recent change, transmissions that only needed
one descriptor were being missed. The result is that such
packets were tracked as outstanding transmissions but never
removed when its completion notification was received.

Fixes: ffc385b95a ("ibmvnic: Keep track of supplementary TX descriptors")
Signed-off-by: Thomas Falcon <tlfalcon@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Thomas Falcon 2018-02-21 18:21:10 -06:00 committed by David S. Miller
parent f4af1db48b
commit aa9029479e
1 changed files with 1 additions and 1 deletions
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2
drivers/net/ethernet/ibm/ibmvnic.c
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@ -1478,7 +1478,6 @@ static int ibmvnic_xmit(struct sk_buff *skb, struct net_device *netdev)
if ((*hdrs >> 7) & 1) {
build_hdr_descs_arr(tx_buff, &num_entries, *hdrs);
tx_crq.v1.n_crq_elem = num_entries;
tx_buff->num_entries = num_entries;
tx_buff->indir_arr[0] = tx_crq;
tx_buff->indir_dma = dma_map_single(dev, tx_buff->indir_arr,
sizeof(tx_buff->indir_arr),
@ -1533,6 +1532,7 @@ static int ibmvnic_xmit(struct sk_buff *skb, struct net_device *netdev)
netif_stop_subqueue(netdev, queue_num);
}
tx_buff->num_entries = num_entries;
tx_packets++;
tx_bytes += skb->len;
txq->trans_start = jiffies;