diff mbox series

[net-next,v2,1/5] sch_htb: Allow HTB priority parameter in offload mode

Message ID 20230118105107.9516-2-hkelam@marvell.com (mailing list archive)
State Changes Requested
Delegated to: Netdev Maintainers
Headers show
Series octeontx2-pf: HTB offload support | expand

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Context Check Description
netdev/tree_selection success Clearly marked for net-next, async
netdev/fixes_present success Fixes tag not required for -next series
netdev/subject_prefix success Link
netdev/cover_letter success Series has a cover letter
netdev/patch_count success Link
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 61 this patch: 61
netdev/cc_maintainers warning 3 maintainers not CCed: maximmi@nvidia.com leon@kernel.org moshet@nvidia.com
netdev/build_clang success Errors and warnings before: 3 this patch: 3
netdev/module_param success Was 0 now: 0
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 79 this patch: 79
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 50 lines checked
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

Hariprasad Kelam Jan. 18, 2023, 10:51 a.m. UTC 
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.

Add prio parameter check in mlx5 driver, as mlx5 devices are not capable
of supporting the prio parameter when htb offload is used. Report error
if prio parameter is set to a non-default value.

Signed-off-by: Naveen Mamindlapalli <naveenm@marvell.com>
Co-developed-by: Rahul Rameshbabu <rrameshbabu@nvidia.com>
Signed-off-by: Rahul Rameshbabu <rrameshbabu@nvidia.com>
Signed-off-by: Hariprasad Kelam <hkelam@marvell.com>
Signed-off-by: Sunil Kovvuri Goutham <sgoutham@marvell.com>
---
v2*  ensure other drivers won't effect by allowing 'prio'
     parameter in htb offload mode


 drivers/net/ethernet/mellanox/mlx5/core/en/qos.c | 6 ++++++
 include/net/pkt_cls.h                            | 1 +
 net/sched/sch_htb.c                              | 7 +++----
 3 files changed, 10 insertions(+), 4 deletions(-)

--
2.17.1
diff mbox series

Patch

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/qos.c b/drivers/net/ethernet/mellanox/mlx5/core/en/qos.c
index 2842195ee548..e16b3d6ea471 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en/qos.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/qos.c
@@ -379,6 +379,12 @@  int mlx5e_htb_setup_tc(struct mlx5e_priv *priv, struct tc_htb_qopt_offload *htb_
 	if (!htb && htb_qopt->command != TC_HTB_CREATE)
 		return -EINVAL;

+	if (htb_qopt->prio) {
+		NL_SET_ERR_MSG(htb_qopt->extack,
+			       "prio parameter is not supported by device with HTB offload enabled.");
+		return -EINVAL;
+	}
+
 	switch (htb_qopt->command) {
 	case TC_HTB_CREATE:
 		if (!mlx5_qos_is_supported(priv->mdev)) {
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);