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| author | Grygorii Strashko <grygorii.strashko@ti.com> | 2022-04-12 13:29:28 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2022-04-13 14:42:39 +0300 |
| commit | 5ec836be11b3f7dfbdeaee8dd86137f134df6f6f (patch) | |
| tree | e5e2f0b9f00c191d9a7d5983dcee436d01c3aca6 /drivers/net/ethernet/ti/cpsw_priv.h | |
| parent | e3a5e33fae99b69d72296b2c6afea1db4a397779 (diff) | |
| download | linux-5ec836be11b3f7dfbdeaee8dd86137f134df6f6f.tar.xz | |
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/cpsw_priv.h')
0 files changed, 0 insertions, 0 deletions