diff mbox series

[net-next,V3,5/8] net/mlx5: Add support for new scheduling elements

Message ID 20241117205046.736499-6-tariqt@nvidia.com (mailing list archive)
State Changes Requested
Delegated to: Netdev Maintainers
Headers show
Series net/mlx5: ConnectX-8 SW Steering + Rate management on traffic classes | expand

Checks

Context Check Description
netdev/series_format success Posting correctly formatted
netdev/tree_selection success Clearly marked for net-next
netdev/ynl success Generated files up to date; no warnings/errors; GEN HAS DIFF 2 files changed, 64 insertions(+);
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 3 this patch: 3
netdev/build_tools success Errors and warnings before: 0 (+0) this patch: 0 (+0)
netdev/cc_maintainers warning 1 maintainers not CCed: linux-rdma@vger.kernel.org
netdev/build_clang success Errors and warnings before: 3 this patch: 3
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
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: 7 this patch: 7
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 69 lines checked
netdev/build_clang_rust success No Rust files in patch. Skipping build
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0
netdev/contest success net-next-2024-11-18--00-00 (tests: 789)

Commit Message

Tariq Toukan Nov. 17, 2024, 8:50 p.m. UTC 
From: Carolina Jubran <cjubran@nvidia.com>

Introduce new scheduling elements in the E-Switch QoS hierarchy to
enhance traffic management capabilities. This patch adds support for:

- Rate Limit scheduling elements: Enables bandwidth limitation across
  multiple nodes without a shared ancestor, providing a mechanism for
  more granular control of bandwidth allocation.

- Traffic Class Transmit Scheduling Arbiter (TSAR): Introduces the
  infrastructure for creating Traffic Class TSARs, allowing
  hierarchical arbitration based on traffic classes.

- Traffic Class Arbiter TSAR: Adds support for a TSAR capable of
  managing arbitration between multiple traffic classes, enabling
  improved bandwidth prioritization and traffic management.

No functional changes are introduced in this patch.

Signed-off-by: Carolina Jubran <cjubran@nvidia.com>
Reviewed-by: Cosmin Ratiu <cratiu@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/rl.c |  4 ++++
 include/linux/mlx5/mlx5_ifc.h                | 14 +++++++++++---
 2 files changed, 15 insertions(+), 3 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/rl.c b/drivers/net/ethernet/mellanox/mlx5/core/rl.c
index e393391966e0..39a209b9b684 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/rl.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/rl.c
@@ -56,6 +56,8 @@  bool mlx5_qos_tsar_type_supported(struct mlx5_core_dev *dev, int type, u8 hierar
 		return cap & TSAR_TYPE_CAP_MASK_ROUND_ROBIN;
 	case TSAR_ELEMENT_TSAR_TYPE_ETS:
 		return cap & TSAR_TYPE_CAP_MASK_ETS;
+	case TSAR_ELEMENT_TSAR_TYPE_TC_ARB:
+		return cap & TSAR_TYPE_CAP_MASK_TC_ARB;
 	}
 
 	return false;
@@ -87,6 +89,8 @@  bool mlx5_qos_element_type_supported(struct mlx5_core_dev *dev, int type, u8 hie
 		return cap & ELEMENT_TYPE_CAP_MASK_PARA_VPORT_TC;
 	case SCHEDULING_CONTEXT_ELEMENT_TYPE_QUEUE_GROUP:
 		return cap & ELEMENT_TYPE_CAP_MASK_QUEUE_GROUP;
+	case SCHEDULING_CONTEXT_ELEMENT_TYPE_RATE_LIMIT:
+		return cap & ELEMENT_TYPE_CAP_MASK_RATE_LIMIT;
 	}
 
 	return false;
diff --git a/include/linux/mlx5/mlx5_ifc.h b/include/linux/mlx5/mlx5_ifc.h
index cf354d34b30a..87ec079ec83f 100644
--- a/include/linux/mlx5/mlx5_ifc.h
+++ b/include/linux/mlx5/mlx5_ifc.h
@@ -1103,7 +1103,8 @@  struct mlx5_ifc_qos_cap_bits {
 
 	u8         packet_pacing_min_rate[0x20];
 
-	u8         reserved_at_80[0x10];
+	u8         reserved_at_80[0xb];
+	u8         log_esw_max_rate_limit[0x5];
 	u8         packet_pacing_rate_table_size[0x10];
 
 	u8         esw_element_type[0x10];
@@ -4096,6 +4097,7 @@  enum {
 	SCHEDULING_CONTEXT_ELEMENT_TYPE_VPORT_TC = 0x2,
 	SCHEDULING_CONTEXT_ELEMENT_TYPE_PARA_VPORT_TC = 0x3,
 	SCHEDULING_CONTEXT_ELEMENT_TYPE_QUEUE_GROUP = 0x4,
+	SCHEDULING_CONTEXT_ELEMENT_TYPE_RATE_LIMIT = 0x5,
 };
 
 enum {
@@ -4104,22 +4106,26 @@  enum {
 	ELEMENT_TYPE_CAP_MASK_VPORT_TC		= 1 << 2,
 	ELEMENT_TYPE_CAP_MASK_PARA_VPORT_TC	= 1 << 3,
 	ELEMENT_TYPE_CAP_MASK_QUEUE_GROUP	= 1 << 4,
+	ELEMENT_TYPE_CAP_MASK_RATE_LIMIT	= 1 << 5,
 };
 
 enum {
 	TSAR_ELEMENT_TSAR_TYPE_DWRR = 0x0,
 	TSAR_ELEMENT_TSAR_TYPE_ROUND_ROBIN = 0x1,
 	TSAR_ELEMENT_TSAR_TYPE_ETS = 0x2,
+	TSAR_ELEMENT_TSAR_TYPE_TC_ARB = 0x3,
 };
 
 enum {
 	TSAR_TYPE_CAP_MASK_DWRR		= 1 << 0,
 	TSAR_TYPE_CAP_MASK_ROUND_ROBIN	= 1 << 1,
 	TSAR_TYPE_CAP_MASK_ETS		= 1 << 2,
+	TSAR_TYPE_CAP_MASK_TC_ARB       = 1 << 3,
 };
 
 struct mlx5_ifc_tsar_element_bits {
-	u8         reserved_at_0[0x8];
+	u8         traffic_class[0x4];
+	u8         reserved_at_4[0x4];
 	u8         tsar_type[0x8];
 	u8         reserved_at_10[0x10];
 };
@@ -4156,7 +4162,9 @@  struct mlx5_ifc_scheduling_context_bits {
 
 	u8         max_average_bw[0x20];
 
-	u8         reserved_at_e0[0x120];
+	u8         max_bw_obj_id[0x20];
+
+	u8         reserved_at_100[0x100];
 };
 
 struct mlx5_ifc_rqtc_bits {