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Date: Thu, 5 Jul 2012 17:03:45 +0300
From: Or Gerlitz <ogerlitz@...lanox.com>
To: davem@...emloft.net
Cc: roland@...nel.org, yevgenyp@...lanox.com, oren@...lanox.com,
netdev@...r.kernel.org, amirv@...lanox.com,
Hadar Hen Zion <hadarh@...lanox.co.il>,
Or Gerlitz <ogerlitz@...lanox.com>
Subject: [PATCH net-next V1 05/10] net/mlx4_core: Add firmware commands to support device managed flow steering
From: Hadar Hen Zion <hadarh@...lanox.co.il>
Add support for firmware commands to attach/detach a new device managed
steering mode. Such network steering rules allow the user to provide an
L2/L3/L4 flow specification to the firmware and have the device to steer
traffic that matches that specification to the provided QP.
Signed-off-by: Hadar Hen Zion <hadarh@...lanox.co.il>
Signed-off-by: Or Gerlitz <ogerlitz@...lanox.com>
---
drivers/net/ethernet/mellanox/mlx4/cmd.c | 19 +++++++++++++
drivers/net/ethernet/mellanox/mlx4/mcg.c | 29 ++++++++++++++++++++
drivers/net/ethernet/mellanox/mlx4/mlx4.h | 10 +++++++
.../net/ethernet/mellanox/mlx4/resource_tracker.c | 24 ++++++++++++++++
include/linux/mlx4/cmd.h | 4 +++
5 files changed, 86 insertions(+), 0 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlx4/cmd.c b/drivers/net/ethernet/mellanox/mlx4/cmd.c
index 842c8ce..7e94987 100644
--- a/drivers/net/ethernet/mellanox/mlx4/cmd.c
+++ b/drivers/net/ethernet/mellanox/mlx4/cmd.c
@@ -1080,6 +1080,25 @@ static struct mlx4_cmd_info cmd_info[] = {
.verify = NULL,
.wrapper = NULL
},
+ /* flow steering commands */
+ {
+ .opcode = MLX4_QP_FLOW_STEERING_ATTACH,
+ .has_inbox = true,
+ .has_outbox = false,
+ .out_is_imm = true,
+ .encode_slave_id = false,
+ .verify = NULL,
+ .wrapper = mlx4_QP_FLOW_STEERING_ATTACH_wrapper
+ },
+ {
+ .opcode = MLX4_QP_FLOW_STEERING_DETACH,
+ .has_inbox = false,
+ .has_outbox = false,
+ .out_is_imm = false,
+ .encode_slave_id = false,
+ .verify = NULL,
+ .wrapper = mlx4_QP_FLOW_STEERING_DETACH_wrapper
+ },
};
static int mlx4_master_process_vhcr(struct mlx4_dev *dev, int slave,
diff --git a/drivers/net/ethernet/mellanox/mlx4/mcg.c b/drivers/net/ethernet/mellanox/mlx4/mcg.c
index 319c9d4..3c59a33 100644
--- a/drivers/net/ethernet/mellanox/mlx4/mcg.c
+++ b/drivers/net/ethernet/mellanox/mlx4/mcg.c
@@ -62,6 +62,35 @@ int mlx4_get_qp_per_mgm(struct mlx4_dev *dev)
return 4 * (mlx4_get_mgm_entry_size(dev) / 16 - 2);
}
+static int mlx4_QP_FLOW_STEERING_ATTACH(struct mlx4_dev *dev,
+ struct mlx4_cmd_mailbox *mailbox,
+ u32 size,
+ u64 *reg_id)
+{
+ u64 imm;
+ int err = 0;
+
+ err = mlx4_cmd_imm(dev, mailbox->dma, &imm, size, 0,
+ MLX4_QP_FLOW_STEERING_ATTACH, MLX4_CMD_TIME_CLASS_A,
+ MLX4_CMD_NATIVE);
+ if (err)
+ return err;
+ *reg_id = imm;
+
+ return err;
+}
+
+static int mlx4_QP_FLOW_STEERING_DETACH(struct mlx4_dev *dev, u64 regid)
+{
+ int err = 0;
+
+ err = mlx4_cmd(dev, regid, 0, 0,
+ MLX4_QP_FLOW_STEERING_DETACH, MLX4_CMD_TIME_CLASS_A,
+ MLX4_CMD_NATIVE);
+
+ return err;
+}
+
static int mlx4_READ_ENTRY(struct mlx4_dev *dev, int index,
struct mlx4_cmd_mailbox *mailbox)
{
diff --git a/drivers/net/ethernet/mellanox/mlx4/mlx4.h b/drivers/net/ethernet/mellanox/mlx4/mlx4.h
index a425a98..c07e882 100644
--- a/drivers/net/ethernet/mellanox/mlx4/mlx4.h
+++ b/drivers/net/ethernet/mellanox/mlx4/mlx4.h
@@ -1118,6 +1118,16 @@ int mlx4_QUERY_IF_STAT_wrapper(struct mlx4_dev *dev, int slave,
struct mlx4_cmd_mailbox *inbox,
struct mlx4_cmd_mailbox *outbox,
struct mlx4_cmd_info *cmd);
+int mlx4_QP_FLOW_STEERING_ATTACH_wrapper(struct mlx4_dev *dev, int slave,
+ struct mlx4_vhcr *vhcr,
+ struct mlx4_cmd_mailbox *inbox,
+ struct mlx4_cmd_mailbox *outbox,
+ struct mlx4_cmd_info *cmd);
+int mlx4_QP_FLOW_STEERING_DETACH_wrapper(struct mlx4_dev *dev, int slave,
+ struct mlx4_vhcr *vhcr,
+ struct mlx4_cmd_mailbox *inbox,
+ struct mlx4_cmd_mailbox *outbox,
+ struct mlx4_cmd_info *cmd);
int mlx4_get_mgm_entry_size(struct mlx4_dev *dev);
int mlx4_get_qp_per_mgm(struct mlx4_dev *dev);
diff --git a/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c b/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c
index 6bdac29..a8ca960 100644
--- a/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c
+++ b/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c
@@ -2738,6 +2738,30 @@ ex_put:
return err;
}
+int mlx4_QP_FLOW_STEERING_ATTACH_wrapper(struct mlx4_dev *dev, int slave,
+ struct mlx4_vhcr *vhcr,
+ struct mlx4_cmd_mailbox *inbox,
+ struct mlx4_cmd_mailbox *outbox,
+ struct mlx4_cmd_info *cmd)
+{
+ return mlx4_cmd_imm(dev, inbox->dma, &vhcr->out_param,
+ vhcr->in_modifier, 0,
+ MLX4_QP_FLOW_STEERING_ATTACH,
+ MLX4_CMD_TIME_CLASS_A,
+ MLX4_CMD_NATIVE);
+}
+
+int mlx4_QP_FLOW_STEERING_DETACH_wrapper(struct mlx4_dev *dev, int slave,
+ struct mlx4_vhcr *vhcr,
+ struct mlx4_cmd_mailbox *inbox,
+ struct mlx4_cmd_mailbox *outbox,
+ struct mlx4_cmd_info *cmd)
+{
+ return mlx4_cmd(dev, vhcr->in_param, 0, 0,
+ MLX4_QP_FLOW_STEERING_DETACH, MLX4_CMD_TIME_CLASS_A,
+ MLX4_CMD_NATIVE);
+}
+
enum {
BUSY_MAX_RETRIES = 10
};
diff --git a/include/linux/mlx4/cmd.h b/include/linux/mlx4/cmd.h
index 1f3860a..2606951 100644
--- a/include/linux/mlx4/cmd.h
+++ b/include/linux/mlx4/cmd.h
@@ -154,6 +154,10 @@ enum {
/* set port opcode modifiers */
MLX4_SET_PORT_PRIO2TC = 0x8,
MLX4_SET_PORT_SCHEDULER = 0x9,
+
+ /* register/delete flow steering network rules */
+ MLX4_QP_FLOW_STEERING_ATTACH = 0x65,
+ MLX4_QP_FLOW_STEERING_DETACH = 0x66,
};
enum {
--
1.7.1
--
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