netdev - [PATCH mlx5-next 02/11] net/mlx5: Add flow counter bulk allocation hardware bits and command

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Date:   Mon, 29 Jul 2019 21:12:54 +0000
From:   Saeed Mahameed <saeedm@...lanox.com>
To:     Saeed Mahameed <saeedm@...lanox.com>,
        Leon Romanovsky <leonro@...lanox.com>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "linux-rdma@...r.kernel.org" <linux-rdma@...r.kernel.org>
CC:     Gavi Teitz <gavi@...lanox.com>, Vlad Buslov <vladbu@...lanox.com>
Subject: [PATCH mlx5-next 02/11] net/mlx5: Add flow counter bulk allocation
 hardware bits and command

From: Gavi Teitz <gavi@...lanox.com>

Add a handle to invoke the new FW capability of allocating a bulk of
flow counters.

Signed-off-by: Gavi Teitz <gavi@...lanox.com>
Reviewed-by: Vlad Buslov <vladbu@...lanox.com>
Signed-off-by: Saeed Mahameed <saeedm@...lanox.com>
---
 .../net/ethernet/mellanox/mlx5/core/fs_cmd.c  | 10 ++++++++-
 .../net/ethernet/mellanox/mlx5/core/fs_cmd.h  |  3 +++
 include/linux/mlx5/mlx5_ifc.h                 | 21 +++++++++++++++++--
 3 files changed, 31 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/fs_cmd.c b/drivers/net/ethernet/mellanox/mlx5/core/fs_cmd.c
index 51f6972f4c70..b84a225bbe86 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/fs_cmd.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/fs_cmd.c
@@ -566,7 +566,9 @@ static int mlx5_cmd_delete_fte(struct mlx5_flow_root_namespace *ns,
 	return mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
 }
 
-int mlx5_cmd_fc_alloc(struct mlx5_core_dev *dev, u32 *id)
+int mlx5_cmd_fc_bulk_alloc(struct mlx5_core_dev *dev,
+			   enum mlx5_fc_bulk_alloc_bitmask alloc_bitmask,
+			   u32 *id)
 {
 	u32 in[MLX5_ST_SZ_DW(alloc_flow_counter_in)]   = {0};
 	u32 out[MLX5_ST_SZ_DW(alloc_flow_counter_out)] = {0};
@@ -574,6 +576,7 @@ int mlx5_cmd_fc_alloc(struct mlx5_core_dev *dev, u32 *id)
 
 	MLX5_SET(alloc_flow_counter_in, in, opcode,
 		 MLX5_CMD_OP_ALLOC_FLOW_COUNTER);
+	MLX5_SET(alloc_flow_counter_in, in, flow_counter_bulk, alloc_bitmask);
 
 	err = mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
 	if (!err)
@@ -581,6 +584,11 @@ int mlx5_cmd_fc_alloc(struct mlx5_core_dev *dev, u32 *id)
 	return err;
 }
 
+int mlx5_cmd_fc_alloc(struct mlx5_core_dev *dev, u32 *id)
+{
+	return mlx5_cmd_fc_bulk_alloc(dev, 0, id);
+}
+
 int mlx5_cmd_fc_free(struct mlx5_core_dev *dev, u32 id)
 {
 	u32 in[MLX5_ST_SZ_DW(dealloc_flow_counter_in)]   = {0};
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/fs_cmd.h b/drivers/net/ethernet/mellanox/mlx5/core/fs_cmd.h
index db49eabba98d..bc4606306009 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/fs_cmd.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/fs_cmd.h
@@ -78,6 +78,9 @@ struct mlx5_flow_cmds {
 };
 
 int mlx5_cmd_fc_alloc(struct mlx5_core_dev *dev, u32 *id);
+int mlx5_cmd_fc_bulk_alloc(struct mlx5_core_dev *dev,
+			   enum mlx5_fc_bulk_alloc_bitmask alloc_bitmask,
+			   u32 *id);
 int mlx5_cmd_fc_free(struct mlx5_core_dev *dev, u32 id);
 int mlx5_cmd_fc_query(struct mlx5_core_dev *dev, u32 id,
 		      u64 *packets, u64 *bytes);
diff --git a/include/linux/mlx5/mlx5_ifc.h b/include/linux/mlx5/mlx5_ifc.h
index b3d5752657d9..196987f14a3f 100644
--- a/include/linux/mlx5/mlx5_ifc.h
+++ b/include/linux/mlx5/mlx5_ifc.h
@@ -1040,6 +1040,21 @@ enum {
 	MLX5_UCTX_CAP_INTERNAL_DEV_RES = 1UL << 1,
 };
 
+#define MLX5_FC_BULK_SIZE_FACTOR 128
+
+enum mlx5_fc_bulk_alloc_bitmask {
+	MLX5_FC_BULK_128   = (1 << 0),
+	MLX5_FC_BULK_256   = (1 << 1),
+	MLX5_FC_BULK_512   = (1 << 2),
+	MLX5_FC_BULK_1024  = (1 << 3),
+	MLX5_FC_BULK_2048  = (1 << 4),
+	MLX5_FC_BULK_4096  = (1 << 5),
+	MLX5_FC_BULK_8192  = (1 << 6),
+	MLX5_FC_BULK_16384 = (1 << 7),
+};
+
+#define MLX5_FC_BULK_NUM_FCS(fc_enum) (MLX5_FC_BULK_SIZE_FACTOR * (fc_enum))
+
 struct mlx5_ifc_cmd_hca_cap_bits {
 	u8         reserved_at_0[0x30];
 	u8         vhca_id[0x10];
@@ -1244,7 +1259,8 @@ struct mlx5_ifc_cmd_hca_cap_bits {
 	u8         reserved_at_2e0[0x7];
 	u8         max_qp_mcg[0x19];
 
-	u8         reserved_at_300[0x18];
+	u8         reserved_at_300[0x10];
+	u8         flow_counter_bulk_alloc[0x8];
 	u8         log_max_mcg[0x8];
 
 	u8         reserved_at_320[0x3];
@@ -7815,7 +7831,8 @@ struct mlx5_ifc_alloc_flow_counter_in_bits {
 	u8         reserved_at_20[0x10];
 	u8         op_mod[0x10];
 
-	u8         reserved_at_40[0x40];
+	u8         reserved_at_40[0x38];
+	u8         flow_counter_bulk[0x8];
 };
 
 struct mlx5_ifc_add_vxlan_udp_dport_out_bits {
-- 
2.21.0