diff options
| author | Grygorii Strashko <grygorii.strashko@ti.com> | 2022-04-12 13:29:28 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2022-04-13 12:42:39 +0100 |
| commit | 5ec836be11b3f7dfbdeaee8dd86137f134df6f6f (patch) | |
| tree | e5e2f0b9f00c191d9a7d5983dcee436d01c3aca6 /drivers/net/ethernet/ti/am65-cpsw-qos.h | |
| parent | e3a5e33fae99b69d72296b2c6afea1db4a397779 (diff) | |
net: ethernet: ti: am65-cpsw: enable bc/mc storm prevention support
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>
Diffstat (limited to 'drivers/net/ethernet/ti/am65-cpsw-qos.h')
| -rw-r--r-- | drivers/net/ethernet/ti/am65-cpsw-qos.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/net/ethernet/ti/am65-cpsw-qos.h b/drivers/net/ethernet/ti/am65-cpsw-qos.h index e8f1b6b59e93..fb223b43b196 100644 --- a/drivers/net/ethernet/ti/am65-cpsw-qos.h +++ b/drivers/net/ethernet/ti/am65-cpsw-qos.h @@ -14,11 +14,19 @@ struct am65_cpsw_est { struct tc_taprio_qopt_offload taprio; }; +struct am65_cpsw_ale_ratelimit { + unsigned long cookie; + u64 rate_packet_ps; +}; + struct am65_cpsw_qos { struct am65_cpsw_est *est_admin; struct am65_cpsw_est *est_oper; ktime_t link_down_time; int link_speed; + + struct am65_cpsw_ale_ratelimit ale_bc_ratelimit; + struct am65_cpsw_ale_ratelimit ale_mc_ratelimit; }; int am65_cpsw_qos_ndo_setup_tc(struct net_device *ndev, enum tc_setup_type type, |