[dpdk-dev] [PATCH v2] net/octeontx2: extend RSS supported offload types

[Jerin Jacob]

On Fri, Jan 24, 2020 at 9:16 AM <kirankumark at marvell.com> wrote:
>
> From: Kiran Kumar K <kirankumark at marvell.com>
>
> Extend RSS offload types for octeontx2. Add support to select
> L3 SRC, L3 DST, L4 SRC and L4 DST for RSS calculation.
>
> Add support to select L3 SRC or DST only, L4 SRC or DST only for RSS
> calculation.
>
> With this requirement there will be following combinations,
> IPV[4,6]_SRC_ONLY, IPV[4,6]_DST_ONLY, [TCP,UDP,SCTP]_SRC_ONLY,
> [TCP,UDP,SCTP]_DST_ONLY. So, instead of creating a bit for each
> combination, we are using upper 4 bits (31:28) in the flow_key_cfg
> to represent the SRC, DST selection. 31 => L3_SRC, 30 => L3_DST,
> 29 => L4_SRC, 28 => L4_DST. These won't be part of flow_cfg, so that
> we don't need to change the existing ABI.
>
> Signed-off-by: Kiran Kumar K <kirankumark at marvell.com>

Acked-by: Jerin Jacob <jerinj at marvell.com>

Applied to dpdk-next-net-mrvl/master. Thanks


> ---
> V2 Changes:
> * Updated supported offloads
>
>  drivers/common/octeontx2/otx2_mbox.h |  6 +++++-
>  drivers/net/octeontx2/otx2_ethdev.h  |  6 +++++-
>  drivers/net/octeontx2/otx2_rss.c     | 12 ++++++++++++
>  3 files changed, 22 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/common/octeontx2/otx2_mbox.h b/drivers/common/octeontx2/otx2_mbox.h
> index e0e4e2f63..4972b8a6e 100644
> --- a/drivers/common/octeontx2/otx2_mbox.h
> +++ b/drivers/common/octeontx2/otx2_mbox.h
> @@ -918,7 +918,11 @@ struct nix_rss_flowkey_cfg {
>  #define FLOW_KEY_TYPE_INNR_UDP      BIT(15)
>  #define FLOW_KEY_TYPE_INNR_SCTP     BIT(16)
>  #define FLOW_KEY_TYPE_INNR_ETH_DMAC BIT(17)
> -       uint8_t group;       /* RSS context or group */
> +#define FLOW_KEY_TYPE_L4_DST BIT(28)
> +#define FLOW_KEY_TYPE_L4_SRC BIT(29)
> +#define FLOW_KEY_TYPE_L3_DST BIT(30)
> +#define FLOW_KEY_TYPE_L3_SRC BIT(31)
> +       uint8_t __otx2_io group;       /* RSS context or group */
>  };
>
>  struct nix_rss_flowkey_cfg_rsp {
> diff --git a/drivers/net/octeontx2/otx2_ethdev.h b/drivers/net/octeontx2/otx2_ethdev.h
> index 3f3fdecc4..c075b8d1a 100644
> --- a/drivers/net/octeontx2/otx2_ethdev.h
> +++ b/drivers/net/octeontx2/otx2_ethdev.h
> @@ -113,9 +113,13 @@
>  #define CQ_TIMER_THRESH_DEFAULT        0xAULL /* ~1usec i.e (0xA * 100nsec) */
>  #define CQ_TIMER_THRESH_MAX     255
>
> +#define NIX_RSS_L3_L4_SRC_DST  (ETH_RSS_L3_SRC_ONLY | ETH_RSS_L3_DST_ONLY \
> +                               | ETH_RSS_L4_SRC_ONLY | ETH_RSS_L4_DST_ONLY)
> +
>  #define NIX_RSS_OFFLOAD                (ETH_RSS_PORT | ETH_RSS_IP | ETH_RSS_UDP |\
>                                  ETH_RSS_TCP | ETH_RSS_SCTP | \
> -                                ETH_RSS_TUNNEL | ETH_RSS_L2_PAYLOAD)
> +                                ETH_RSS_TUNNEL | ETH_RSS_L2_PAYLOAD | \
> +                                NIX_RSS_L3_L4_SRC_DST)
>
>  #define NIX_TX_OFFLOAD_CAPA ( \
>         DEV_TX_OFFLOAD_MBUF_FAST_FREE   | \
> diff --git a/drivers/net/octeontx2/otx2_rss.c b/drivers/net/octeontx2/otx2_rss.c
> index bc7b64387..7a8c8f3de 100644
> --- a/drivers/net/octeontx2/otx2_rss.c
> +++ b/drivers/net/octeontx2/otx2_rss.c
> @@ -210,6 +210,18 @@ otx2_rss_ethdev_to_nix(struct otx2_eth_dev *dev, uint64_t ethdev_rss,
>
>         dev->rss_info.nix_rss = ethdev_rss;
>
> +       if (ethdev_rss & ETH_RSS_L3_SRC_ONLY)
> +               flowkey_cfg |= FLOW_KEY_TYPE_L3_SRC;
> +
> +       if (ethdev_rss & ETH_RSS_L3_DST_ONLY)
> +               flowkey_cfg |= FLOW_KEY_TYPE_L3_DST;
> +
> +       if (ethdev_rss & ETH_RSS_L4_SRC_ONLY)
> +               flowkey_cfg |= FLOW_KEY_TYPE_L4_SRC;
> +
> +       if (ethdev_rss & ETH_RSS_L4_DST_ONLY)
> +               flowkey_cfg |= FLOW_KEY_TYPE_L4_DST;
> +
>         if (ethdev_rss & RSS_IPV4_ENABLE)
>                 flowkey_cfg |= flow_key_type[rss_level][RSS_IPV4_INDEX];
>
> --
> 2.17.1
>