Re: [PATCH v6 net-next 00/12] allow user to offload tc action to net device
From: Jamal Hadi Salim <jhs@mojatatu.com>
Date: 2021-12-11 19:04:55
Hi,
I believe these patches are functionally ready. There is still some
nitpick.
On the general patch: Why not Cc the maintainers for the drivers you
are touching? I know the changes seem trivial but it is good courtesy.
From your logs driver files touched:
drivers/net/dsa/ocelot/felix_vsc9959.c | 4 +-
drivers/net/dsa/sja1105/sja1105_flower.c | 2 +-
drivers/net/ethernet/broadcom/bnxt/bnxt_tc.c | 2 +-
.../net/ethernet/freescale/enetc/enetc_qos.c | 6 +-
.../ethernet/mellanox/mlx5/core/en/rep/tc.c | 3 +
.../ethernet/mellanox/mlxsw/spectrum_flower.c | 2 +-
drivers/net/ethernet/mscc/ocelot_flower.c | 2 +-
.../ethernet/netronome/nfp/flower/offload.c | 3 +
Also - shouldnt the history be all inclusive? You obly have V5 here.
Maybe with lore or patchwork this is no longer necessary and all
history can be retrieved in the future?
Individual patch comments to follow.
cheers,
jamal
On 2021-12-09 04:27, Simon Horman wrote:Baowen Zheng says:
Allow use of flow_indr_dev_register/flow_indr_dev_setup_offload to offload
tc actions independent of flows.
The motivation for this work is to prepare for using TC police action
instances to provide hardware offload of OVS metering feature - which calls
for policers that may be used by multiple flows and whose lifecycle is
independent of any flows that use them.
This patch includes basic changes to offload drivers to return EOPNOTSUPP
if this feature is used - it is not yet supported by any driver.
Tc cli command to offload and quote an action:
# tc qdisc del dev $DEV ingress && sleep 1 || true
# tc actions delete action police index 200 || true
# tc qdisc add dev $DEV ingress
# tc qdisc show dev $DEV ingress
# tc actions add action police rate 100mbit burst 10000k index 200 skip_sw
# tc -s -d actions list action police
total acts 1
action order 0: police 0xc8 rate 100Mbit burst 10000Kb mtu 2Kb action reclassify
overhead 0b linklayer ethernet
ref 1 bind 0 installed 142 sec used 0 sec
Action statistics:
Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
skip_sw in_hw in_hw_count 1
used_hw_stats delayed
# tc filter add dev $DEV protocol ip parent ffff: \
flower skip_sw ip_proto tcp action police index 200
# tc -s -d filter show dev $DEV protocol ip parent ffff:
filter pref 49152 flower chain 0
filter pref 49152 flower chain 0 handle 0x1
eth_type ipv4
ip_proto tcp
skip_sw
in_hw in_hw_count 1
action order 1: police 0xc8 rate 100Mbit burst 10000Kb mtu 2Kb action
reclassify overhead 0b linklayer ethernet
ref 2 bind 1 installed 300 sec used 0 sec
Action statistics:
Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
skip_sw in_hw in_hw_count 1
used_hw_stats delayed
# tc filter add dev $DEV protocol ipv6 parent ffff: \
flower skip_sw ip_proto tcp action police index 200
# tc -s -d filter show dev $DEV protocol ipv6 parent ffff:
filter pref 49151 flower chain 0
filter pref 49151 flower chain 0 handle 0x1
eth_type ipv6
ip_proto tcp
skip_sw
in_hw in_hw_count 1
action order 1: police 0xc8 rate 100Mbit burst 10000Kb mtu 2Kb action
reclassify overhead 0b linklayer ethernet
ref 3 bind 2 installed 761 sec used 0 sec
Action statistics:
Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
skip_sw in_hw in_hw_count 1
used_hw_stats delayed
# tc -s -d actions list action police
total acts 1
action order 0: police 0xc8 rate 100Mbit burst 10000Kb mtu 2Kb action reclassify overhead 0b linklayer ethernet
ref 3 bind 2 installed 917 sec used 0 sec
Action statistics:
Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
skip_sw in_hw in_hw_count 1
used_hw_stats delayed
Changes compared to v5 patches:
* Fix issue reported by Dan Carpenter found using Smatch.
Baowen Zheng (12):
flow_offload: fill flags to action structure
flow_offload: reject to offload tc actions in offload drivers
flow_offload: add index to flow_action_entry structure
flow_offload: return EOPNOTSUPP for the unsupported mpls action type
flow_offload: add ops to tc_action_ops for flow action setup
flow_offload: allow user to offload tc action to net device
flow_offload: add skip_hw and skip_sw to control if offload the action
flow_offload: add process to update action stats from hardware
net: sched: save full flags for tc action
flow_offload: add reoffload process to update hw_count
flow_offload: validate flags of filter and actions
selftests: tc-testing: add action offload selftest for action and
filter
drivers/net/dsa/ocelot/felix_vsc9959.c | 4 +-
drivers/net/dsa/sja1105/sja1105_flower.c | 2 +-
drivers/net/ethernet/broadcom/bnxt/bnxt_tc.c | 2 +-
.../net/ethernet/freescale/enetc/enetc_qos.c | 6 +-
.../ethernet/mellanox/mlx5/core/en/rep/tc.c | 3 +
.../ethernet/mellanox/mlxsw/spectrum_flower.c | 2 +-
drivers/net/ethernet/mscc/ocelot_flower.c | 2 +-
.../ethernet/netronome/nfp/flower/offload.c | 3 +
include/linux/netdevice.h | 1 +
include/net/act_api.h | 27 +-
include/net/flow_offload.h | 20 +-
include/net/pkt_cls.h | 27 +-
include/net/tc_act/tc_gate.h | 5 -
include/uapi/linux/pkt_cls.h | 9 +-
net/core/flow_offload.c | 46 +-
net/sched/act_api.c | 450 +++++++++++++++++-
net/sched/act_bpf.c | 2 +-
net/sched/act_connmark.c | 2 +-
net/sched/act_csum.c | 19 +
net/sched/act_ct.c | 21 +
net/sched/act_ctinfo.c | 2 +-
net/sched/act_gact.c | 38 ++
net/sched/act_gate.c | 51 +-
net/sched/act_ife.c | 2 +-
net/sched/act_ipt.c | 2 +-
net/sched/act_mirred.c | 50 ++
net/sched/act_mpls.c | 54 ++-
net/sched/act_nat.c | 2 +-
net/sched/act_pedit.c | 36 +-
net/sched/act_police.c | 27 +-
net/sched/act_sample.c | 32 +-
net/sched/act_simple.c | 2 +-
net/sched/act_skbedit.c | 38 +-
net/sched/act_skbmod.c | 2 +-
net/sched/act_tunnel_key.c | 54 +++
net/sched/act_vlan.c | 48 ++
net/sched/cls_api.c | 263 ++--------
net/sched/cls_flower.c | 9 +-
net/sched/cls_matchall.c | 9 +-
net/sched/cls_u32.c | 12 +-
.../tc-testing/tc-tests/actions/police.json | 24 +
.../tc-testing/tc-tests/filters/matchall.json | 24 +
42 files changed, 1144 insertions(+), 290 deletions(-)