From: Stephen Hemminger <stephen@networkplumber.org>
Date: Sat, 14 Jun 2014 01:06:21 +0000 (-0700)
Subject: virtio: check for transmit checksum config error
X-Git-Tag: spdx-start~10503
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=61b16f0f167a331e65f0729b3554ded0440b545b;p=dpdk.git

virtio: check for transmit checksum config error

This driver does not support transmit checksum or vlan offload
therefore check for this when device is configured.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Acked-by: Alan Carew <alan.carew@intel.com>
---

diff --git a/lib/librte_pmd_virtio/virtio_rxtx.c b/lib/librte_pmd_virtio/virtio_rxtx.c
index 4c45cdbb6f..2c68f40204 100644
--- a/lib/librte_pmd_virtio/virtio_rxtx.c
+++ b/lib/librte_pmd_virtio/virtio_rxtx.c
@@ -391,13 +391,20 @@ virtio_dev_tx_queue_setup(struct rte_eth_dev *dev,
 			uint16_t queue_idx,
 			uint16_t nb_desc,
 			unsigned int socket_id,
-			__rte_unused const struct rte_eth_txconf *tx_conf)
+			const struct rte_eth_txconf *tx_conf)
 {
 	uint8_t vtpci_queue_idx = 2 * queue_idx + VTNET_SQ_TQ_QUEUE_IDX;
 	struct virtqueue *vq;
 	int ret;
 
 	PMD_INIT_FUNC_TRACE();
+
+	if ((tx_conf->txq_flags & ETH_TXQ_FLAGS_NOOFFLOADS)
+	    != ETH_TXQ_FLAGS_NOOFFLOADS) {
+		PMD_INIT_LOG(ERR, "TX checksum offload not supported\n");
+		return -EINVAL;
+	}
+
 	ret = virtio_dev_queue_setup(dev, VTNET_TQ, queue_idx, vtpci_queue_idx,
 			nb_desc, socket_id, &vq);
 	if (ret < 0) {