linux-kernel - [net-next PATCH 1/5] sch_htb: Allow HTB priority parameter in offload mode

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Message-ID: <20230112173120.23312-2-hkelam@marvell.com>
Date:   Thu, 12 Jan 2023 23:01:16 +0530
From:   Hariprasad Kelam <hkelam@...vell.com>
To:     <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>
CC:     <kuba@...nel.org>, <davem@...emloft.net>, <pabeni@...hat.com>,
        <edumazet@...gle.com>, <sgoutham@...vell.com>,
        <lcherian@...vell.com>, <gakula@...vell.com>, <jerinj@...vell.com>,
        <sbhatta@...vell.com>,
        "Naveen Mamindlapalli" <naveenm@...vell.com>,
        Hariprasad Kelam <hkelam@...vell.com>
Subject: [net-next PATCH 1/5] sch_htb: Allow HTB priority parameter in offload mode

From: Naveen Mamindlapalli <naveenm@...vell.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@...vell.com>
Signed-off-by: Hariprasad Kelam <hkelam@...vell.com>
Signed-off-by: Sunil Kovvuri Goutham <sgoutham@...vell.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;
-		}
 	}
 
 	/* 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