[dpdk-dev] [PATCH] virtio: Add default_txconf

[Takuya ASADA <syuu@cloudius-systems.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>
---
 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