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SubjectRe: [net-next PATCH 1/5] sch_htb: Allow HTB priority parameter in offload mode
On Thu, Jan 12, 2023 at 11:01:16PM +0530, Hariprasad Kelam wrote:
> From: Naveen Mamindlapalli <naveenm@marvell.com>
>
> The current implementation of HTB offload returns the EINVAL error
> for unsupported parameters like prio and quantum. This patch removes
> the error returning checks for 'prio' parameter and populates its
> value to tc_htb_qopt_offload structure such that driver can use the
> same.
>
> Signed-off-by: Naveen Mamindlapalli <naveenm@marvell.com>
> Signed-off-by: Hariprasad Kelam <hkelam@marvell.com>
> Signed-off-by: Sunil Kovvuri Goutham <sgoutham@marvell.com>
> ---
> include/net/pkt_cls.h | 1 +
> net/sched/sch_htb.c | 7 +++----
> 2 files changed, 4 insertions(+), 4 deletions(-)
>
> diff --git a/include/net/pkt_cls.h b/include/net/pkt_cls.h
> index 4cabb32a2ad9..02afb1baf39d 100644
> --- a/include/net/pkt_cls.h
> +++ b/include/net/pkt_cls.h
> @@ -864,6 +864,7 @@ struct tc_htb_qopt_offload {
> u16 qid;
> u64 rate;
> u64 ceil;
> + u8 prio;
> };
>
> #define TC_HTB_CLASSID_ROOT U32_MAX
> diff --git a/net/sched/sch_htb.c b/net/sched/sch_htb.c
> index 2238edece1a4..f2d034cdd7bd 100644
> --- a/net/sched/sch_htb.c
> +++ b/net/sched/sch_htb.c
> @@ -1806,10 +1806,6 @@ static int htb_change_class(struct Qdisc *sch, u32 classid,
> NL_SET_ERR_MSG(extack, "HTB offload doesn't support the quantum parameter");
> goto failure;
> }
> - if (hopt->prio) {
> - NL_SET_ERR_MSG(extack, "HTB offload doesn't support the prio parameter");
> - goto failure;
> - }

The check should go to mlx5e then.

> }
>
> /* Keeping backward compatible with rate_table based iproute2 tc */
> @@ -1905,6 +1901,7 @@ static int htb_change_class(struct Qdisc *sch, u32 classid,
> TC_HTB_CLASSID_ROOT,
> .rate = max_t(u64, hopt->rate.rate, rate64),
> .ceil = max_t(u64, hopt->ceil.rate, ceil64),
> + .prio = hopt->prio,
> .extack = extack,
> };
> err = htb_offload(dev, &offload_opt);
> @@ -1925,6 +1922,7 @@ static int htb_change_class(struct Qdisc *sch, u32 classid,
> TC_H_MIN(parent->common.classid),
> .rate = max_t(u64, hopt->rate.rate, rate64),
> .ceil = max_t(u64, hopt->ceil.rate, ceil64),
> + .prio = hopt->prio,
> .extack = extack,
> };
> err = htb_offload(dev, &offload_opt);
> @@ -2010,6 +2008,7 @@ static int htb_change_class(struct Qdisc *sch, u32 classid,
> .classid = cl->common.classid,
> .rate = max_t(u64, hopt->rate.rate, rate64),
> .ceil = max_t(u64, hopt->ceil.rate, ceil64),
> + .prio = hopt->prio,
> .extack = extack,
> };
> err = htb_offload(dev, &offload_opt);
> --
> 2.17.1
>

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