> -----Original Message-----
> From: Xing, Beilei <beilei.x...@intel.com>
> Sent: Friday, May 19, 2023 3:31 PM
> To: Wu, Jingjing <jingjing...@intel.com>
> Cc: dev@dpdk.org; Liu, Mingxia <mingxia....@intel.com>; Xing, Beilei
> <beilei.x...@intel.com>; Wang, Xiao W <xiao.w.w...@intel.com>
> Subject: [PATCH v3 09/10] net/cpfl: support peer ports get
>
> From: Beilei Xing <beilei.x...@intel.com>
>
> This patch supports get hairpin peer ports.
>
> Signed-off-by: Xiao Wang <xiao.w.w...@intel.com>
> Signed-off-by: Beilei Xing <beilei.x...@intel.com>
> ---
> drivers/net/cpfl/cpfl_ethdev.c | 34 ++++++++++++++++++++++++++++++++++
> 1 file changed, 34 insertions(+)
>
> diff --git a/drivers/net/cpfl/cpfl_ethdev.c b/drivers/net/cpfl/cpfl_ethdev.c
> index 3b480178c0..59c7e75d2a 100644
> --- a/drivers/net/cpfl/cpfl_ethdev.c
> +++ b/drivers/net/cpfl/cpfl_ethdev.c
> @@ -1069,6 +1069,39 @@ cpfl_dev_close(struct rte_eth_dev *dev)
> return 0;
> }
>
> +static int
> +cpfl_hairpin_get_peer_ports(struct rte_eth_dev *dev, uint16_t *peer_ports,
> + __rte_unused size_t len, uint32_t tx)
> +{
Param len is used to identify the size of the peer ports array.
You should use it, and check if peer_ports is null. Otherwise will cause
invalid access.
* array length
> + struct cpfl_vport *cpfl_vport =
> + (struct cpfl_vport *)dev->data->dev_private;
> + struct idpf_tx_queue *txq;
> + struct idpf_rx_queue *rxq;
> + struct cpfl_tx_queue *cpfl_txq;
> + struct cpfl_rx_queue *cpfl_rxq;
> + int i, j;
> +
> + if (tx > 0) {
> + for (i = cpfl_vport->nb_data_txq, j = 0; i <
> dev->data->nb_tx_queues; i++,
> j++) {
> + txq = dev->data->tx_queues[i];
> + if (txq == NULL)
> + return -EINVAL;
> + cpfl_txq = (struct cpfl_tx_queue *)txq;
> + peer_ports[j] = cpfl_txq->hairpin_info.peer_rxp;
> + }
> + } else if (tx == 0) {
> + for (i = cpfl_vport->nb_data_rxq, j = 0; i <
> dev->data->nb_rx_queues; i++,
> j++) {
> + rxq = dev->data->rx_queues[i];
> + if (rxq == NULL)
> + return -EINVAL;
> + cpfl_rxq = (struct cpfl_rx_queue *)rxq;
> + peer_ports[j] = cpfl_rxq->hairpin_info.peer_txp;
> + }
> + }
> +
> + return j;
> +}
> +
> static const struct eth_dev_ops cpfl_eth_dev_ops = {
> .dev_configure = cpfl_dev_configure,
> .dev_close = cpfl_dev_close,
> @@ -1098,6 +1131,7 @@ static const struct eth_dev_ops cpfl_eth_dev_ops = {
> .hairpin_cap_get = cpfl_hairpin_cap_get,
> .rx_hairpin_queue_setup = cpfl_rx_hairpin_queue_setup,
> .tx_hairpin_queue_setup = cpfl_tx_hairpin_queue_setup,
> + .hairpin_get_peer_ports = cpfl_hairpin_get_peer_ports,
> };
>
> static int
> --
> 2.26.2
