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5c8560c4a1
Enable rate limiting TX DMA queues for CPSW interface by configuring the
rate in absolute Mb/s units per TX queue.
Example:
ethtool -L eth0 tx 4
echo 100 > /sys/class/net/eth0/queues/tx-0/tx_maxrate
echo 200 > /sys/class/net/eth0/queues/tx-1/tx_maxrate
echo 50 > /sys/class/net/eth0/queues/tx-2/tx_maxrate
echo 30 > /sys/class/net/eth0/queues/tx-3/tx_maxrate
# disable
echo 0 > /sys/class/net/eth0/queues/tx-0/tx_maxrate
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Siddharth Vadapalli <s-vadapalli@ti.com>
Link: https://lore.kernel.org/r/20230327085758.3237155-1-s-vadapalli@ti.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
41 lines
1.1 KiB
C
41 lines
1.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/* Copyright (C) 2020 Texas Instruments Incorporated - http://www.ti.com/
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*/
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#ifndef AM65_CPSW_QOS_H_
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#define AM65_CPSW_QOS_H_
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#include <linux/netdevice.h>
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#include <net/pkt_sched.h>
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struct am65_cpsw_common;
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struct am65_cpsw_est {
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int buf;
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/* has to be the last one */
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struct tc_taprio_qopt_offload taprio;
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};
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struct am65_cpsw_ale_ratelimit {
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unsigned long cookie;
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u64 rate_packet_ps;
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};
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struct am65_cpsw_qos {
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struct am65_cpsw_est *est_admin;
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struct am65_cpsw_est *est_oper;
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ktime_t link_down_time;
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int link_speed;
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struct am65_cpsw_ale_ratelimit ale_bc_ratelimit;
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struct am65_cpsw_ale_ratelimit ale_mc_ratelimit;
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};
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int am65_cpsw_qos_ndo_setup_tc(struct net_device *ndev, enum tc_setup_type type,
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void *type_data);
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void am65_cpsw_qos_link_up(struct net_device *ndev, int link_speed);
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void am65_cpsw_qos_link_down(struct net_device *ndev);
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int am65_cpsw_qos_ndo_tx_p0_set_maxrate(struct net_device *ndev, int queue, u32 rate_mbps);
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void am65_cpsw_qos_tx_p0_rate_init(struct am65_cpsw_common *common);
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#endif /* AM65_CPSW_QOS_H_ */
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