[dpdk-dev] [PATCH v1 02/20] net/txgbe: add base code for VF driver

[Ferruh Yigit]

On 1/22/2021 9:47 AM, Jiawen Wu wrote:
> Implement VF device init and uninit function with hardware operations,
> and negotiate with PF in mailbox.
> 
> Signed-off-by: Jiawen Wu <jiawenwu at trustnetic.com>

<...>

> +int txgbevf_get_queues(struct txgbe_hw *hw, unsigned int *num_tcs,
> +		       unsigned int *default_tc)
> +{
> +	int err, i;
> +	u32 msg[5];
> +
> +	/* do nothing if API doesn't support txgbevf_get_queues */
> +	switch (hw->api_version) {
> +	case txgbe_mbox_api_11:
> +	case txgbe_mbox_api_12:
> +	case txgbe_mbox_api_13:
> +		break;
> +	default:
> +		return 0;
> +	}
> +
> +	/* Fetch queue configuration from the PF */
> +	msg[0] = TXGBE_VF_GET_QUEUES;
> +	for (i = 1; i < 5; i++)
> +		msg[i] = 0;
> +
> +	err = txgbevf_write_msg_read_ack(hw, msg, msg, 5);
> +	if (!err) {
> +		msg[0] &= ~TXGBE_VT_MSGTYPE_CTS;
> +
> +		/*
> +		 * if we we didn't get an ACK there must have been

typo on 'we', it is dublicated.