[dpdk-stable] [17.11] net/tap: fix reported number of Tx packets

[Yongseok Koh]

> On Jan 13, 2019, at 11:46 PM, Raslan Darawsheh <rasland at mellanox.com> wrote:
> 
> Hi Yongseok,
> 
> I've just double check that, sorry for this issue, but it seems that we don't really need this patch for stable.
> 
> The issue that this patch solves came from the fact that when the call to writev fails It was updating num_tx,
> but this is not the case for 17.11 so I believe we can drop this patch for 17.11

Got it.

Thanks,
Yongseok

>> -----Original Message-----
>> From: Yongseok Koh
>> Sent: Monday, January 14, 2019 6:24 AM
>> To: Raslan Darawsheh <rasland at mellanox.com>
>> Cc: stable at dpdk.org
>> Subject: Re: [17.11] net/tap: fix reported number of Tx packets
>> 
>> 
>>> On Jan 13, 2019, at 12:42 AM, Raslan Darawsheh <rasland at mellanox.com>
>> wrote:
>>> 
>>> When writev fails to send packets it doesn't update the number of Tx
>>> packets, but it still num_tx is updated.
>>> 
>>> The value that should be returned is the actual number of sent packets
>>> which is num_packets.
>>> 
>>> Fixes: 02f96a0a82d1 ("net/tap: add TUN/TAP device PMD")
>>> CC: stable at dpdk.org
>>> 
>>> Signed-off-by: Raslan Darawsheh <rasland at mellanox.com>
>>> Acked-by: Keith Wiles <keith.wiles at intel.com>
>>> ---
>> 
>> Raslan, it doesn't get compiled on stable/17.11
>> 
>> Thanks,
>> Yongseok
>> 
>>> drivers/net/tap/rte_eth_tap.c | 2 +-
>>> 1 file changed, 1 insertion(+), 1 deletion(-)
>>> 
>>> diff --git a/drivers/net/tap/rte_eth_tap.c
>>> b/drivers/net/tap/rte_eth_tap.c index 466624a..50757ef 100644
>>> --- a/drivers/net/tap/rte_eth_tap.c
>>> +++ b/drivers/net/tap/rte_eth_tap.c
>>> @@ -488,7 +488,7 @@ pmd_tx_burst(void *queue, struct rte_mbuf
>> **bufs, uint16_t nb_pkts)
>>> 	txq->stats.errs += nb_pkts - num_tx;
>>> 	txq->stats.obytes += num_tx_bytes;
>>> 
>>> -	return num_tx;
>>> +	return num_packets;
>>> }
>>> 
>>> static const char *
>>> --
>>> 2.7.4
>>> 
>