[dpdk-dev] [PATCH v6 4/8] ethdev: add GTP items to support flow API

Sean Harte seanbh at gmail.com
Fri Sep 29 10:15:06 CEST 2017


On 29 September 2017 at 06:18, Beilei Xing <beilei.xing at intel.com> wrote:
> This patch adds GTP, GTPC and GTPU items for
> generic flow API, and also exposes item fields
> through the flow command.
>
> Signed-off-by: Beilei Xing <beilei.xing at intel.com>
> Acked-by: Adrien Mazarguil <adrien.mazarguil at 6wind.com>
> ---
>  app/test-pmd/cmdline_flow.c                 | 40 ++++++++++++++++++++++
>  app/test-pmd/config.c                       |  3 ++
>  doc/guides/prog_guide/rte_flow.rst          | 17 ++++++++++
>  doc/guides/testpmd_app_ug/testpmd_funcs.rst |  4 +++
>  lib/librte_ether/rte_flow.h                 | 52 +++++++++++++++++++++++++++++
>  5 files changed, 116 insertions(+)

<snip>

>  /**
> + * RTE_FLOW_ITEM_TYPE_GTP.
> + *
> + * Matches a GTPv1 header.
> + */
> +struct rte_flow_item_gtp {
> +       /**
> +        * Version (3b), protocol type (1b), reserved (1b),
> +        * Extension header flag (1b),
> +        * Sequence number flag (1b),
> +        * N-PDU number flag (1b).
> +        */
> +       uint8_t v_pt_rsv_flags;
> +       uint8_t msg_type; /**< Message type. */
> +       rte_be16_t msg_len; /**< Message length. */
> +       rte_be32_t teid; /**< Tunnel endpoint identifier. */
> +};

In future, you might add support for GTPv2 (which is used since LTE).
Maybe this structure should have v1 in its name to avoid confusion?

> +
> +/** Default mask for RTE_FLOW_ITEM_TYPE_GTP. */
> +#ifndef __cplusplus
> +static const struct rte_flow_item_gtp rte_flow_item_gtp_mask = {
> +       .teid = RTE_BE32(0xffffffff),
> +};
> +#endif
> +
> +/**
>   * Matching pattern item definition.
>   *
>   * A pattern is formed by stacking items starting from the lowest protocol
> --
> 2.5.5
>


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