[dpdk-dev] [PATCH 30/31] net/i40e: support Linux VF to configure IRQ link list

[Ferruh Yigit]

On 12/2/2016 12:12 AM, Wenzhuo Lu wrote:
> i40e PF host only support to work with DPDK VF driver, Linux
> VF driver is not supported. This change will enhance in
> configuring IRQ link list.
> 
> This Change will identify VF client by number of vector
> requested. DPDK VF will ask only single one while Linux VF
> will request at least 2. It will have different configuration
> for different clients. DPDK VF will be configured to link all
> queue together, while Linux VF will be configured per request.
> 
> Signed-off-by: Chen Jing D(Mark) <jing.d.chen at intel.com>
> ---
>  drivers/net/i40e/i40e_pf.c | 151 +++++++++++++++++++++++++++++++++++++++++----
>  1 file changed, 138 insertions(+), 13 deletions(-)
> 
> diff --git a/drivers/net/i40e/i40e_pf.c b/drivers/net/i40e/i40e_pf.c
> index 1ad5ed1..4b0da75 100644
> --- a/drivers/net/i40e/i40e_pf.c
> +++ b/drivers/net/i40e/i40e_pf.c
> @@ -585,14 +585,116 @@
>  	return ret;
>  }
>  
> +static void
> +i40e_pf_config_irq_link_list(struct i40e_pf_vf *vf,
> +			     struct i40e_virtchnl_vector_map *vvm)
> +{
> +	uint64_t linklistmap = 0, tempmap;
> +	struct i40e_hw *hw = I40E_PF_TO_HW(vf->pf);
> +	uint16_t qid;
> +	bool b_first_q = true;
> +	enum i40e_queue_type qtype;
> +	uint16_t vector_id;
> +	uint32_t reg, reg_idx;
> +	uint16_t itr_idx = 0, i;
> +
> +	vector_id = vvm->vector_id;
> +	/* setup the head */
> +	if (!vector_id)
> +		reg_idx = I40E_VPINT_LNKLST0(vf->vf_idx);
> +	else
> +		reg_idx = I40E_VPINT_LNKLSTN(
> +		((hw->func_caps.num_msix_vectors_vf - 1) * vf->vf_idx)
> +		+ (vector_id - 1));
> +
> +	if (vvm->rxq_map == 0 && vvm->txq_map == 0) {
> +		I40E_WRITE_REG(hw, reg_idx,
> +			       I40E_VPINT_LNKLST0_FIRSTQ_INDX_MASK);
> +		goto cfg_irq_done;
> +	}
> +
> +	/* sort all rx and tx queues */
> +	tempmap = vvm->rxq_map;
> +	for (i = 0; i < sizeof(vvm->rxq_map) * 8; i++) {
> +		if (tempmap & 0x1)
> +			linklistmap |= (1 << (2 * i));
> +		tempmap >>= 1;
> +	}
> +
> +	tempmap = vvm->txq_map;
> +	for (i = 0; i < sizeof(vvm->txq_map) * 8; i++) {
> +		if (tempmap & 0x1)
> +			linklistmap |= (1 << (2 * i + 1));
> +		tempmap >>= 1;
> +	}
> +
> +	/* Link all rx and tx queues into a chained list */
> +	tempmap = linklistmap;
> +	i = 0;
> +	b_first_q = true;
> +	do {
> +		if (tempmap & 0x1) {
> +			qtype = i % 2;

This cause ICC compilation error:

.../app/test-pmd/cmdline.c:(.text+0x79d4): undefined reference to
`rte_pmd_i40e_set_vf_vlan_stripq'