Hi Rongwei,
> -----Original Message-----
> From: Rongwei Liu <rongw...@nvidia.com>
> Sent: Wednesday, 18 January 2023 17:45
>
> Add more sentences to describe the group concepts
> and define group 0 as root group for traffic to search a
> hit rule.
>
> Signed-off-by: Rongwei Liu <rongw...@nvidia.com>
> ---
> lib/ethdev/rte_flow.h | 13 ++++++++++++-
> 1 file changed, 12 insertions(+), 1 deletion(-)
>
> diff --git a/lib/ethdev/rte_flow.h b/lib/ethdev/rte_flow.h
> index b60987db4b..e71ac0c199 100644
> --- a/lib/ethdev/rte_flow.h
> +++ b/lib/ethdev/rte_flow.h
> @@ -86,7 +86,18 @@ extern "C" {
> * but may be valid in a few cases.
> */
> struct rte_flow_attr {
> - uint32_t group; /**< Priority group. */
> + /**
> + * A group is a superset of multiple rules.
> + * The default group is 0 and is processed for all packets.
> + * The group 0 of bifurcated drivers is shared with the kernel.
> + * Rules in other groups are processed only if the group is chained
> + * by a jump action from a previously matched rule.
> + * It means the group hierarchy is made by the flow rules,
> + * and the group 0 is the hierarchy root.
> + * Note there is no automatic dead loop protection.
> + * @see rte_flow_action_jump
> + */
> + uint32_t group;
> uint32_t priority; /**< Rule priority level within group. */
> /**
> * The rule in question applies to ingress traffic (non-"transfer").
> --
> 2.27.0
Acked-by: Ori Kam <or...@nvidia.com>
Best,
Ori
