[dpdk-dev] virtio: Add default_txconf

When I tried to launch test-pmd on KVM guest of Fedora21, I got following error:

Configuring Port 0 (socket 0)
Fail to configure port 0 tx queues
EAL: Error - exiting with code: 1
  Cause: Start ports failed

I found that the error caused here, and actual error message was "TX checksum offload not supported":
http://dpdk.org/browse/dpdk/tree/lib/librte_pmd_virtio/virtio_rxtx.c#n425

This patch adds default_txconf on virtio pmd, to avoid the error.

Signed-off-by: Takuya ASADA <syuu@cloudius-systems.com>
---
 lib/librte_pmd_virtio/virtio_ethdev.c | 3 +++
 1 file changed, 3 insertions(+)
  

> -----Original Message-----
> From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of Takuya ASADA
> Sent: Monday, February 23, 2015 7:51 AM
> To: dev@dpdk.org
> Subject: [dpdk-dev] [PATCH] virtio: Add default_txconf
> 
> When I tried to launch test-pmd on KVM guest of Fedora21, I got following
> error:
> 
> Configuring Port 0 (socket 0)
> Fail to configure port 0 tx queues
> EAL: Error - exiting with code: 1
>   Cause: Start ports failed
> 
> I found that the error caused here, and actual error message was "TX
> checksum offload not supported":
> http://dpdk.org/browse/dpdk/tree/lib/librte_pmd_virtio/virtio_rxtx.c#n425
> 
> This patch adds default_txconf on virtio pmd, to avoid the error.
> 
> Signed-off-by: Takuya ASADA <syuu@cloudius-systems.com>
> ---
>  lib/librte_pmd_virtio/virtio_ethdev.c | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/lib/librte_pmd_virtio/virtio_ethdev.c
> b/lib/librte_pmd_virtio/virtio_ethdev.c
> index b3b5bb6..9c183bb 100644
> --- a/lib/librte_pmd_virtio/virtio_ethdev.c
> +++ b/lib/librte_pmd_virtio/virtio_ethdev.c
> @@ -1188,6 +1188,9 @@ virtio_dev_info_get(struct rte_eth_dev *dev,
> struct rte_eth_dev_info *dev_info)
>  	dev_info->min_rx_bufsize = VIRTIO_MIN_RX_BUFSIZE;
>  	dev_info->max_rx_pktlen = VIRTIO_MAX_RX_PKTLEN;
>  	dev_info->max_mac_addrs = VIRTIO_MAX_MAC_ADDRS;
> +	dev_info->default_txconf = (struct rte_eth_txconf) {
> +		.txq_flags = ETH_TXQ_FLAGS_NOOFFLOADS
> +	};
>  }
> 
>  /*
> --
> 2.1.0

Acked-by: Pablo de Lara <pablo.de.lara.guarch@intel.com>
  

> > When I tried to launch test-pmd on KVM guest of Fedora21, I got following
> > error:
> > 
> > Configuring Port 0 (socket 0)
> > Fail to configure port 0 tx queues
> > EAL: Error - exiting with code: 1
> >   Cause: Start ports failed
> > 
> > I found that the error caused here, and actual error message was "TX
> > checksum offload not supported":
> > http://dpdk.org/browse/dpdk/tree/lib/librte_pmd_virtio/virtio_rxtx.c#n425
> > 
> > This patch adds default_txconf on virtio pmd, to avoid the error.
> > 
> > Signed-off-by: Takuya ASADA <syuu@cloudius-systems.com>
> 
> Acked-by: Pablo de Lara <pablo.de.lara.guarch@intel.com>

Applied, thanks