[dpdk-dev] [PATCH 4/8] virtio: check for transmit checksum config error

[Stephen Hemminger]

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

Signed-off-by: Stephen Hemminger <stephen at networkplumber.org>

---
 lib/librte_ether/rte_ethdev.h       |    8 +++++---
 lib/librte_pmd_virtio/virtio_rxtx.c |    9 ++++++++-
 2 files changed, 13 insertions(+), 4 deletions(-)

--- a/lib/librte_pmd_virtio/virtio_rxtx.c       2014-06-13 17:55:01.788243375 
-0700
+++ b/lib/librte_pmd_virtio/virtio_rxtx.c       2014-06-13 17:59:19.372748301 
-0700
@@ -390,13 +390,20 @@ virtio_dev_tx_queue_setup(struct rte_eth
                        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) {