[dpdk-dev] [PATCH v1 02/10] net/i40e: add API to get received packet count

[Wu, Jingjing]

> -----Original Message-----
> From: dev [mailto:dev-bounces at dpdk.org] On Behalf Of David Hunt
> Sent: Saturday, August 26, 2017 12:02 AM
> To: dev at dpdk.org
> Cc: Hunt, David <david.hunt at intel.com>; Marjanovic, Nemanja
> <nemanja.marjanovic at intel.com>; Sexton, Rory <rory.sexton at intel.com>
> Subject: [dpdk-dev] [PATCH v1 02/10] net/i40e: add API to get received packet
> count
> 
> Signed-off-by: Nemanja Marjanovic <nemanja.marjanovic at intel.com>
> Signed-off-by: Rory Sexton <rory.sexton at intel.com>
> Signed-off-by: David Hunt <david.hunt at intel.com>
> ---
>  drivers/net/i40e/i40e_ethdev.c |  1 +
>  drivers/net/i40e/i40e_rxtx.c   | 10 ++++++++++
>  drivers/net/i40e/i40e_rxtx.h   |  1 +
>  lib/librte_ether/rte_ethdev.h  | 19 +++++++++++++++++++
>  4 files changed, 31 insertions(+)
> 
> diff --git a/drivers/net/i40e/i40e_ethdev.c b/drivers/net/i40e/i40e_ethdev.c
> index 8fb67d8..d9806fc 100644
> --- a/drivers/net/i40e/i40e_ethdev.c
> +++ b/drivers/net/i40e/i40e_ethdev.c
> @@ -446,6 +446,7 @@ static const struct rte_pci_id pci_id_i40e_map[] = {
> 
>  static const struct eth_dev_ops i40e_eth_dev_ops = {
>  	.vfid_to_pfid                 = i40e_vf_mac_to_vsi,
> +	.read_pf_stats                = i40e_vsi_stats_read,
>  	.dev_configure                = i40e_dev_configure,
>  	.dev_start                    = i40e_dev_start,
>  	.dev_stop                     = i40e_dev_stop,
> diff --git a/drivers/net/i40e/i40e_rxtx.c b/drivers/net/i40e/i40e_rxtx.c index
> 1379d5e..b7b64d2 100644
> --- a/drivers/net/i40e/i40e_rxtx.c
> +++ b/drivers/net/i40e/i40e_rxtx.c
> @@ -833,6 +833,16 @@ i40e_vf_mac_to_vsi(struct rte_eth_dev *dev, uint64_t
> vfid) {
>  	return -1;
>  }
> 
> +uint64_t
> +i40e_vsi_stats_read(struct rte_eth_dev *dev, uint8_t vsi_id) {
> +	struct i40e_hw *hw = I40E_DEV_PRIVATE_TO_HW(dev->data-
> >dev_private);
> +
> +	uint64_t glv_uprch = I40E_READ_REG(hw,
> +			I40E_GLV_UPRCH(vsi_id)) & 0x0000FFFF;
> +	uint64_t glv_uprcl = I40E_READ_REG(hw, I40E_GLV_UPRCL(vsi_id));
> +	return glv_uprcl + (glv_uprch << 32);
> +}

You can change the input to vf_id, and then get the vsi_id internally.
Anyway, the counter registers are cleared when read. It will impact the
Ops like stats_get/ stats_reset.

We have func called i40e_update_vsi_stats which record the packets count. I think you can use it.


Thanks
Jingjing