From: Jiri Pirko <j...@mellanox.com> Yotam says:
The first patch introduces the psample module, a netlink channel dedicated to packet sampling implemented using generic netlink. This module provides a generic way for kernel modules to sample packets, while not being tied to any specific subsystem like NFLOG. The second patch adds the sample tc action, which uses psample to randomly sample packets that match a classifier. The user can configure the psample group number, the sampling rate and the packet's truncation (to save kernel-user traffic). The last two patches add the support for offloading the matchall-sample tc command in the mlxsw driver, for ingress qdiscs. An example for psample usage can be found in the libpsample project at: https://github.com/Mellanox/libpsample Yotam Gigi (4): net: Introduce psample, a new genetlink channel for packet sampling net/sched: Introduce sample tc action mlxsw: reg: add the Monitoring Packet Sampling Configuration Register mlxsw: spectrum: Add packet sample offloading support MAINTAINERS | 7 + drivers/net/ethernet/mellanox/mlxsw/reg.h | 41 ++++ drivers/net/ethernet/mellanox/mlxsw/spectrum.c | 111 +++++++++ drivers/net/ethernet/mellanox/mlxsw/spectrum.h | 10 + drivers/net/ethernet/mellanox/mlxsw/trap.h | 1 + include/net/psample.h | 36 +++ include/net/tc_act/tc_sample.h | 50 ++++ include/uapi/linux/Kbuild | 1 + include/uapi/linux/psample.h | 35 +++ include/uapi/linux/tc_act/Kbuild | 1 + include/uapi/linux/tc_act/tc_sample.h | 26 +++ net/Kconfig | 1 + net/Makefile | 1 + net/psample/Kconfig | 15 ++ net/psample/Makefile | 5 + net/psample/psample.c | 301 +++++++++++++++++++++++++ net/sched/Kconfig | 12 + net/sched/Makefile | 1 + net/sched/act_sample.c | 274 ++++++++++++++++++++++ 19 files changed, 929 insertions(+) create mode 100644 include/net/psample.h create mode 100644 include/net/tc_act/tc_sample.h create mode 100644 include/uapi/linux/psample.h create mode 100644 include/uapi/linux/tc_act/tc_sample.h create mode 100644 net/psample/Kconfig create mode 100644 net/psample/Makefile create mode 100644 net/psample/psample.c create mode 100644 net/sched/act_sample.c -- 2.7.4
