| Message ID | 20220412102929.30719-1-grygorii.strashko@ti.com (mailing list archive) |
|---|---|
| Headers | show |
| Series | net: ethernet: ti: enable bc/mc storm prevention support | expand |
Hello: This series was applied to netdev/net-next.git (master) by David S. Miller <davem@davemloft.net>: On Tue, 12 Apr 2022 13:29:26 +0300 you wrote: > Hi > > This series first adds supports for the ALE feature to rate limit number ingress > broadcast(BC)/multicast(MC) packets per/sec which main purpose is BC/MC storm > prevention. > > And then enables corresponding support for ingress broadcast(BC)/multicast(MC) > packets rate limiting for TI CPSW switchdev and AM65x/J221E CPSW_NUSS drivers 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 > > [...] Here is the summary with links: - [net-next,v3,1/3] drivers: net: cpsw: ale: add broadcast/multicast rate limit support https://git.kernel.org/netdev/net-next/c/e3a5e33fae99 - [net-next,v3,2/3] net: ethernet: ti: am65-cpsw: enable bc/mc storm prevention support https://git.kernel.org/netdev/net-next/c/5ec836be11b3 - [net-next,v3,3/3] net: ethernet: ti: cpsw_new: enable bc/mc storm prevention support https://git.kernel.org/netdev/net-next/c/127c9e970f59 You are awesome, thank you!
Hi This series first adds supports for the ALE feature to rate limit number ingress broadcast(BC)/multicast(MC) packets per/sec which main purpose is BC/MC storm prevention. And then enables corresponding support for ingress broadcast(BC)/multicast(MC) packets rate limiting for TI CPSW switchdev and AM65x/J221E CPSW_NUSS drivers 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. The solution inspired patch from Vladimir Oltean [1]. Changes in v3: - comments applied - policer validation added Changes in v2: - switch to packet-per-second policing introduced by commit 2ffe0395288a ("net/sched: act_police: add support for packet-per-second policing") [2] v2: https://patchwork.kernel.org/project/netdevbpf/cover/20211101170122.19160-1-grygorii.strashko@ti.com/ v1: https://patchwork.kernel.org/project/netdevbpf/cover/20201114035654.32658-1-grygorii.strashko@ti.com/ [1] https://lore.kernel.org/patchwork/patch/1217254/ [2] https://patchwork.kernel.org/project/netdevbpf/cover/20210312140831.23346-1-simon.horman@netronome.com/ Grygorii Strashko (3): drivers: net: cpsw: ale: add broadcast/multicast rate limit support net: ethernet: ti: am65-cpsw: enable bc/mc storm prevention support net: ethernet: ti: cpsw_new: enable bc/mc storm prevention support drivers/net/ethernet/ti/am65-cpsw-qos.c | 180 +++++++++++++++++++++ drivers/net/ethernet/ti/am65-cpsw-qos.h | 8 + drivers/net/ethernet/ti/cpsw_ale.c | 66 ++++++++ drivers/net/ethernet/ti/cpsw_ale.h | 2 + drivers/net/ethernet/ti/cpsw_new.c | 4 +- drivers/net/ethernet/ti/cpsw_priv.c | 205 ++++++++++++++++++++++++ drivers/net/ethernet/ti/cpsw_priv.h | 8 + 7 files changed, 472 insertions(+), 1 deletion(-)