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From: Vamsi Krishna Attunuru <vattunuru@marvell.com>
To: Ferruh Yigit <ferruh.yigit@intel.com>, "dev@dpdk.org" <dev@dpdk.org>
CC: "olivier.matz@6wind.com" <olivier.matz@6wind.com>,
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Thread-Topic: [EXT] Re: [dpdk-dev] [PATCH v6 2/4] lib/kni: add PCI related
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Subject: Re: [dpdk-dev] [EXT] Re: [PATCH v6 2/4] lib/kni: add PCI related
information
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________________________________
From: dev <dev-bounces@dpdk.org> on behalf of Ferruh Yigit <ferruh.yigit@in=
tel.com>
Sent: Thursday, July 11, 2019 9:52 PM
To: Vamsi Krishna Attunuru; dev@dpdk.org
Cc: olivier.matz@6wind.com; arybchenko@solarflare.com
Subject: [EXT] Re: [dpdk-dev] [PATCH v6 2/4] lib/kni: add PCI related infor=
mation
External Email
----------------------------------------------------------------------
On 6/25/2019 4:56 AM, vattunuru@marvell.com wrote:
> From: Vamsi Attunuru <vattunuru@marvell.com>
>
> PCI related information is needed in KNI kernel module,
> since it requires iommu domain info for address
> translations(using iommu_iova_to_phys() call) when
> KNI runs in IOVA =3D VA mode.
>
> Signed-off-by: Vamsi Attunuru <vattunuru@marvell.com>
> ---
> lib/librte_eal/linux/eal/include/rte_kni_common.h | 7 +++++++
> lib/librte_kni/rte_kni.c | 5 +++++
> 2 files changed, 12 insertions(+)
>
> diff --git a/lib/librte_eal/linux/eal/include/rte_kni_common.h b/lib/libr=
te_eal/linux/eal/include/rte_kni_common.h
> index 91a1c14..5db5a13 100644
> --- a/lib/librte_eal/linux/eal/include/rte_kni_common.h
> +++ b/lib/librte_eal/linux/eal/include/rte_kni_common.h
> @@ -111,6 +111,13 @@ struct rte_kni_device_info {
> void * mbuf_va;
> phys_addr_t mbuf_phys;
>
> + /* PCI info */
> + uint16_t vendor_id; /**< Vendor ID or PCI_ANY_ID. */
> + uint16_t device_id; /**< Device ID or PCI_ANY_ID. */
> + uint8_t bus; /**< Device bus */
> + uint8_t devid; /**< Device ID */
> + uint8_t function; /**< Device function. */
> +
> uint16_t group_id; /**< Group ID */
> uint32_t core_id; /**< core ID to bind for kernel thre=
ad */
>
> diff --git a/lib/librte_kni/rte_kni.c b/lib/librte_kni/rte_kni.c
> index e29d0cc..99c4bf5 100644
> --- a/lib/librte_kni/rte_kni.c
> +++ b/lib/librte_kni/rte_kni.c
> @@ -242,6 +242,11 @@ rte_kni_alloc(struct rte_mempool *pktmbuf_pool,
> kni->ops.port_id =3D UINT16_MAX;
>
> memset(&dev_info, 0, sizeof(dev_info));
> + dev_info.bus =3D conf->addr.bus;
> + dev_info.devid =3D conf->addr.devid;
> + dev_info.function =3D conf->addr.function;
> + dev_info.vendor_id =3D conf->id.vendor_id;
> + dev_info.device_id =3D conf->id.device_id;
Sample application part to set 'conf' values were also removed, need to add=
them
back too.
Ack, adding in next version of patches.
The device part was removed from KNI but I can see why this patch requires =
it back.
Yes, rte_kni_device_info is the only struct carries all required info to ke=
rnel module,
all these device info can be protected under the config check though.