Re: [dpdk-dev] [dpdk-dev PATCH v1 1/1] net/octeontx2: update link information for loopback port

[Jerin Jacob <jerinjacobk@gmail.com>]

On Thu, Feb 6, 2020 at 5:36 PM Ashish Gupta <ashishg@marvell.com> wrote:
>
> loopback devices are exposed as ethdev device in octeontx2.
> dpdk link update APIs updating the link information for cgx
> ports but skipping loopback ports.
>
> When stack uses loopback port for forwarding, packets are
> dropped as link status is down. Link information need to be
> updated for loopback ports to avoid it.
>
> Fixes: 38f566280a ("net/octeontx2: add link stats operations")
> Cc: stable@dpdk.org
>
> Signed-off-by: Ashish Gupta <ashishg@marvell.com>

Thanks for the patch.

Acked-by: Jerin Jacob <jerinj@marvell.com>
Applied to dpdk-next-net-mrvl/master after minor rewording of the
commit message. Thanks

> ---
>  drivers/net/octeontx2/otx2_link.c | 49 +++++++++++++++++++++++++++++----------
>  1 file changed, 37 insertions(+), 12 deletions(-)
>
> diff --git a/drivers/net/octeontx2/otx2_link.c b/drivers/net/octeontx2/otx2_link.c
> index f5679b06e..4128f56d9 100644
> --- a/drivers/net/octeontx2/otx2_link.c
> +++ b/drivers/net/octeontx2/otx2_link.c
> @@ -82,32 +82,57 @@ otx2_eth_dev_link_status_update(struct otx2_dev *dev,
>         _rte_eth_dev_callback_process(eth_dev, RTE_ETH_EVENT_INTR_LSC, NULL);
>  }
>
> +static int
> +lbk_link_update(struct rte_eth_link *link)
> +{
> +       link->link_status = ETH_LINK_UP;
> +       link->link_speed = ETH_SPEED_NUM_100G;
> +       link->link_autoneg = ETH_LINK_FIXED;
> +       link->link_duplex = ETH_LINK_FULL_DUPLEX;
> +       return 0;
> +}
> +
> +static int
> +cgx_link_update(struct otx2_eth_dev *dev, struct rte_eth_link *link)
> +{
> +       struct otx2_mbox *mbox = dev->mbox;
> +       struct cgx_link_info_msg *rsp;
> +       int rc;
> +       otx2_mbox_alloc_msg_cgx_get_linkinfo(mbox);
> +       rc = otx2_mbox_process_msg(mbox, (void *)&rsp);
> +       if (rc)
> +               return rc;
> +
> +       link->link_status = rsp->link_info.link_up;
> +       link->link_speed = rsp->link_info.speed;
> +       link->link_autoneg = ETH_LINK_AUTONEG;
> +
> +       if (rsp->link_info.full_duplex)
> +               link->link_duplex = rsp->link_info.full_duplex;
> +       return 0;
> +}
> +
>  int
>  otx2_nix_link_update(struct rte_eth_dev *eth_dev, int wait_to_complete)
>  {
>         struct otx2_eth_dev *dev = otx2_eth_pmd_priv(eth_dev);
> -       struct otx2_mbox *mbox = dev->mbox;
> -       struct cgx_link_info_msg *rsp;
>         struct rte_eth_link link;
>         int rc;
>
>         RTE_SET_USED(wait_to_complete);
> +       memset(&link, 0, sizeof(struct rte_eth_link));
>
> -       if (otx2_dev_is_lbk(dev) || otx2_dev_is_sdp(dev))
> +       if (otx2_dev_is_sdp(dev))
>                 return 0;
>
> -       otx2_mbox_alloc_msg_cgx_get_linkinfo(mbox);
> -       rc = otx2_mbox_process_msg(mbox, (void *)&rsp);
> +       if (otx2_dev_is_lbk(dev))
> +               rc = lbk_link_update(&link);
> +       else
> +               rc = cgx_link_update(dev, &link);
> +
>         if (rc)
>                 return rc;
>
> -       link.link_status = rsp->link_info.link_up;
> -       link.link_speed = rsp->link_info.speed;
> -       link.link_autoneg = ETH_LINK_AUTONEG;
> -
> -       if (rsp->link_info.full_duplex)
> -               link.link_duplex = rsp->link_info.full_duplex;
> -
>         return rte_eth_linkstatus_set(eth_dev, &link);
>  }
>
> --
> 2.14.3
>