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net/mlx4_core: Add firmware commands to support device managed flow steering 

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@mellanox.co.il>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Hadar Hen Zion 2012-07-05 04:03:45 +00:00 committed by David S. Miller
parent c96d97f4d1
commit 8fcfb4db74
5 changed files with 86 additions and 0 deletions
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19
drivers/net/ethernet/mellanox/mlx4/cmd.c
View File

@ -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,

29
drivers/net/ethernet/mellanox/mlx4/mcg.c
View File

@ -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)
{

10
drivers/net/ethernet/mellanox/mlx4/mlx4.h
View File

@ -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);

24
drivers/net/ethernet/mellanox/mlx4/resource_tracker.c
View File

@ -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
};

4
include/linux/mlx4/cmd.h
View File

@ -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 {