Re: [PATCH v6 4/8] ethdev: use GRE protocol struct for flow matching

[Thomas Monjalon <thomas@monjalon.net>]

02/02/2023 13:44, Ferruh Yigit:
> --- a/lib/net/rte_gre.h
> +++ b/lib/net/rte_gre.h
> @@ -28,6 +28,8 @@ extern "C" {
>   */
>  __extension__
>  struct rte_gre_hdr {
> +       union {
> +               struct {
>  #if RTE_BYTE_ORDER == RTE_LITTLE_ENDIAN
>         uint16_t res2:4; /**< Reserved */
>         uint16_t s:1;    /**< Sequence Number Present bit */
> @@ -45,6 +47,9 @@ struct rte_gre_hdr {
>         uint16_t res3:5; /**< Reserved */
>         uint16_t ver:3;  /**< Version Number */
>  #endif
> +               };
> +               rte_be16_t c_rsvd0_ver;
> +       };
>         uint16_t proto;  /**< Protocol Type */

Why adding an unioned field c_rsvd0_ver?