5ec836be11
This patch enables support for ingress broadcast(BC)/multicast(MC) packets rate limiting in TI AM65x CPSW driver (the corresponding ALE support was added in previous patch) by implementing HW offload for simple tc-flower with policer action with matches on dst_mac/mask: - ff:ff:ff:ff:ff:ff/ff:ff:ff:ff:ff:ff has to be used for BC packets rate limiting (exact match) - 01:00:00:00:00:00/01:00:00:00:00:00 fixed value has to be used for MC packets rate limiting The CPSW supports MC/BC packets rate limiting in packets/sec and affects all ingress MC/BC packets and serves as BC/MC storm prevention feature. Examples: - BC rate limit to 1000pps: tc qdisc add dev eth0 clsact tc filter add dev eth0 ingress flower skip_sw dst_mac ff:ff:ff:ff:ff:ff \ action police pkts_rate 1000 pkts_burst 1 drop - MC rate limit to 20000pps: tc qdisc add dev eth0 clsact tc filter add dev eth0 ingress flower skip_sw dst_mac 01:00:00:00:00:00/01:00:00:00:00:00 \ action police rate pkts_rate 20000 pkts_burst 1 drop pkts_burst - not used. Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com> Signed-off-by: David S. Miller <davem@davemloft.net>
38 lines
914 B
C
38 lines
914 B
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_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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#endif /* AM65_CPSW_QOS_H_ */
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