Re: [PATCH iproute2-next v2 0/4] Support qevents

[David Ahern <dsahern@gmail.com>]

On 6/30/20 4:14 AM, Petr Machata wrote:
> To allow configuring user-defined actions as a result of inner workings of
> a qdisc, a concept of qevents was recently introduced to the kernel.
> Qevents are attach points for TC blocks, where filters can be put that are
> executed as the packet hits well-defined points in the qdisc algorithms.
> The attached blocks can be shared, in a manner similar to clsact ingress
> and egress blocks, arbitrary classifiers with arbitrary actions can be put
> on them, etc.
> 
> For example:
> 
> # tc qdisc add dev eth0 root handle 1: \
> 	red limit 500K avpkt 1K qevent early_drop block 10
> # tc filter add block 10 \
> 	matchall action mirred egress mirror dev eth1
> 
> This patch set introduces the corresponding iproute2 support. Patch #1 adds
> the new netlink attribute enumerators. Patch #2 adds a set of helpers to
> implement qevents, and #3 adds a generic documentation to tc.8. Patch #4
> then adds two new qevents to the RED qdisc: mark and early_drop.
> 

applied to iproute2-next. Thanks