Re: [dpdk-dev] [PATCH v2 2/2] i40evf: support interrupt based pf reset request

["Tao, Zhe" <zhe.tao@intel.com>]

> -----Original Message-----
> From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of Jingjing Wu
> Sent: Wednesday, January 27, 2016 9:50 AM
> To: dev@dpdk.org
> Subject: [dpdk-dev] [PATCH v2 2/2] i40evf: support interrupt based pf reset
> request
> 
> Interrupt based request of PF reset from PF is supported by enabling the
> adminq event process in VF driver.
> Users can register a callback for this interrupt event to get informed, when a
> PF reset request detected like:
>   rte_eth_dev_callback_register(portid,
> 		RTE_ETH_EVENT_INTR_RESET,
> 		reset_event_callback,
> 		arg);
> 
> Signed-off-by: Jingjing Wu <jingjing.wu@intel.com>
> ---
>  doc/guides/rel_notes/release_2_3.rst |   1 +
>  drivers/net/i40e/i40e_ethdev_vf.c    | 274
> +++++++++++++++++++++++++++++++----
>  lib/librte_ether/rte_ethdev.h        |   1 +
>  3 files changed, 246 insertions(+), 30 deletions(-)
> 
> diff --git a/doc/guides/rel_notes/release_2_3.rst
> b/doc/guides/rel_notes/release_2_3.rst
> index 99de186..73d5f76 100644
> --- a/doc/guides/rel_notes/release_2_3.rst
> +++ b/doc/guides/rel_notes/release_2_3.rst
> @@ -4,6 +4,7 @@ DPDK Release 2.3
>  New Features
>  ------------
> 
> +* **Added pf reset event reported in i40e vf PMD driver.
> 
>  Resolved Issues
>  ---------------
> diff --git a/drivers/net/i40e/i40e_ethdev_vf.c
> b/drivers/net/i40e/i40e_ethdev_vf.c
> index 64e6957..1ffe64e 100644
> --- a/drivers/net/i40e/i40e_ethdev_vf.c
> +++ b/drivers/net/i40e/i40e_ethdev_vf.c
> @@ -74,8 +74,6 @@
> +static void
> @@ -1662,7 +1869,8 @@ i40evf_enable_queues_intr(struct rte_eth_dev
> *dev)
>  		I40E_WRITE_REG(hw,
>  			       I40E_VFINT_DYN_CTL01,
>  			       I40E_VFINT_DYN_CTL01_INTENA_MASK |
> -			       I40E_VFINT_DYN_CTL01_CLEARPBA_MASK);
> +			       I40E_VFINT_DYN_CTL01_CLEARPBA_MASK |
> +			       I40E_VFINT_DYN_CTL01_ITR_INDX_MASK);
What the usage for ITR bits here?
>  		I40EVF_WRITE_FLUSH(hw);
>  		return;
>  	}
> @@ -1673,11 +1881,10 @@ i40evf_enable_queues_intr(struct rte_eth_dev
> *dev)
> 
> 	I40E_VFINT_DYN_CTLN1(I40EVF_VSI_DEFAULT_MSIX_INTR - 1),
>  			I40E_VFINT_DYN_CTLN1_INTENA_MASK |
>  			I40E_VFINT_DYN_CTLN_CLEARPBA_MASK);
> -	else
> -		/* To support Linux PF host */
> -		I40E_WRITE_REG(hw, I40E_VFINT_DYN_CTL01,
> 
> --
> 2.4.0