Re: [dpdk-dev] [PATCH] net/octeontx2: add check for PTP and HIGIG2

[Jerin Jacob <jerinjacobk@gmail.com>]

On Mon, Jan 13, 2020 at 9:55 AM <kirankumark@marvell.com> wrote:
>
> From: Kiran Kumar K <kirankumark@marvell.com>
>
> For octeontx2 we won't support both PTP and HIGIG2 together.
> Added a check to verify this.

Since it is a bug fix,  Could change to the following or similar and send v2:

net/octeontx2: fix PTP and HIGIG2 coexistence.

octeontx2 PMD does not support both PTP and HIGIG2 together.
added a check to enforce this and updated the Rx offload capabilities when
Higig2 mode enabled.

Fixes: ..
Cc: stable@dpdk.org


>
> Signed-off-by: Kiran Kumar K <kirankumark@marvell.com>
> ---
>  drivers/net/octeontx2/otx2_ethdev.c | 9 ++++++++-
>  drivers/net/octeontx2/otx2_ptp.c    | 5 +++++
>  2 files changed, 13 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/net/octeontx2/otx2_ethdev.c b/drivers/net/octeontx2/otx2_ethdev.c
> index ed329273d..b4c68191d 100644
> --- a/drivers/net/octeontx2/otx2_ethdev.c
> +++ b/drivers/net/octeontx2/otx2_ethdev.c
> @@ -18,7 +18,8 @@ nix_get_rx_offload_capa(struct otx2_eth_dev *dev)
>  {
>         uint64_t capa = NIX_RX_OFFLOAD_CAPA;
>
> -       if (otx2_dev_is_vf(dev))
> +       if (otx2_dev_is_vf(dev) ||
> +           dev->npc_flow.switch_header_type == OTX2_PRIV_FLAGS_HIGIG)
>                 capa &= ~DEV_RX_OFFLOAD_TIMESTAMP;
>
>         return capa;
> @@ -1641,6 +1642,12 @@ otx2_nix_configure(struct rte_eth_dev *eth_dev)
>                 goto fail_offloads;
>         }
>
> +       if (dev->ptp_en &&
> +           dev->npc_flow.switch_header_type == OTX2_PRIV_FLAGS_HIGIG) {
> +               otx2_err(" Both PTP and switch header enabled");

Please remove the space before "Both.."
I think, we can use the below error message also here.

> +               goto free_nix_lf;
> +       }
> +
>         rc = nix_lf_switch_header_type_enable(dev);
>         if (rc) {
>                 otx2_err("Failed to enable switch type nix_lf rc=%d", rc);
> diff --git a/drivers/net/octeontx2/otx2_ptp.c b/drivers/net/octeontx2/otx2_ptp.c
> index f34b9339c..74cb007a0 100644
> --- a/drivers/net/octeontx2/otx2_ptp.c
> +++ b/drivers/net/octeontx2/otx2_ptp.c
> @@ -221,6 +221,11 @@ otx2_nix_timesync_enable(struct rte_eth_dev *eth_dev)
>                 return -EINVAL;
>         }
>
> +       if (dev->npc_flow.switch_header_type == OTX2_PRIV_FLAGS_HIGIG) {
> +               otx2_err("PTP mode not supported in HIGIG mode");

See above.

> +               return -EINVAL;
> +       }
> +
>         /* Allocating a iova address for tx tstamp */
>         const struct rte_memzone *ts;
>         ts = rte_eth_dma_zone_reserve(eth_dev, "otx2_ts",
> --
> 2.17.1
>