[dpdk-dev] [DPDK] net/ixgbe: fix missing Port Representor data-path callbacks
Mohammad Abdul Awal
mohammad.abdul.awal at intel.com
Fri May 11 12:49:22 CEST 2018
On 09/05/2018 16:00, Remy Horton wrote:
> This patch adds Rx and Tx burst functions to the ixgbe
> Port Representors, so that the implementation within
> ixgbe PMD can be tested using applications such as
> testpmd which require data-path functionality.
>
> Fixes: cf80ba6e2038 ("net/ixgbe: add support for representor ports")
>
> Signed-off-by: Remy Horton <remy.horton at intel.com>
> ---
> drivers/net/ixgbe/ixgbe_vf_representor.c | 27 ++++++++++++++++++++++++---
> 1 file changed, 24 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/net/ixgbe/ixgbe_vf_representor.c b/drivers/net/ixgbe/ixgbe_vf_representor.c
> index 8f8af49..21c44d1 100644
> --- a/drivers/net/ixgbe/ixgbe_vf_representor.c
> +++ b/drivers/net/ixgbe/ixgbe_vf_representor.c
> @@ -153,6 +153,25 @@ struct eth_dev_ops ixgbe_vf_representor_dev_ops = {
> .mac_addr_set = ixgbe_vf_representor_mac_addr_set,
> };
>
> +static uint16_t
> +ixgbe_vf_representor_rx_burst(__rte_unused void *rx_queue,
> + __rte_unused struct rte_mbuf **rx_pkts, __rte_unused uint16_t nb_pkts)
> +{
> + return 0;
> +}
> +
> +static uint16_t
> +ixgbe_vf_representor_tx_burst(__rte_unused void *tx_queue,
> + struct rte_mbuf **tx_pkts,
> + uint16_t nb_pkts)
> +{
> + uint16_t idx_pkt;
> +
> + for (idx_pkt = 0; idx_pkt < nb_pkts; idx_pkt++)
> + rte_pktmbuf_free(tx_pkts[idx_pkt]);
We should not free them in the driver silently whereas the application
will think that it has been sent successfully.
Please use the same rule for rx_burst, and return 0.
> + return nb_pkts;
> +}
> +
> int
> ixgbe_vf_representor_init(struct rte_eth_dev *ethdev, void *init_params)
> {
> @@ -182,9 +201,11 @@ ixgbe_vf_representor_init(struct rte_eth_dev *ethdev, void *init_params)
> /* Set representor device ops */
> ethdev->dev_ops = &ixgbe_vf_representor_dev_ops;
>
> - /* No data-path so no RX/TX functions */
> - ethdev->rx_pkt_burst = NULL;
> - ethdev->tx_pkt_burst = NULL;
> + /* No data-path, but need stub Rx/Tx functions to avoid crash
> + * when testing with the likes of testpmd.
> + */
> + ethdev->rx_pkt_burst = ixgbe_vf_representor_rx_burst;
> + ethdev->tx_pkt_burst = ixgbe_vf_representor_tx_burst;
>
> /* Setting the number queues allocated to the VF */
> ethdev->data->nb_rx_queues = IXGBE_VF_MAX_RX_QUEUES;
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