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flow_offload: add support for packet-per-second policing 

Allow flow_offload API to configure packet-per-second policing using rate
and burst parameters.

Dummy implementations of tcf_police_rate_pkt_ps() and
tcf_police_burst_pkt() are supplied which return 0, the unconfigured state.
This is to facilitate splitting the offload, driver, and TC code portion of
this feature into separate patches with the aim of providing a logical flow
for review. And the implementation of these helpers will be filled out by a
follow-up patch.

Signed-off-by: Xingfeng Hu <xingfeng.hu@corigine.com>
Signed-off-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: Louis Peens <louis.peens@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Xingfeng Hu 2021-03-12 15:08:29 +01:00 committed by David S. Miller
parent 4849d9beb8
commit 25660156f4
3 changed files with 17 additions and 0 deletions
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2
include/net/flow_offload.h
View File

@ -234,6 +234,8 @@ struct flow_action_entry {
u32 index;
u32 burst;
u64 rate_bytes_ps;
u64 burst_pkt;
u64 rate_pkt_ps;
u32 mtu;
} police;
struct { /* FLOW_ACTION_CT */

12
include/net/tc_act/tc_police.h
View File

@ -97,6 +97,18 @@ static inline u32 tcf_police_burst(const struct tc_action *act)
return burst;
}
static inline u64 tcf_police_rate_pkt_ps(const struct tc_action *act)
{
/* Not implemented */
return 0;
}
static inline u32 tcf_police_burst_pkt(const struct tc_action *act)
{
/* Not implemented */
return 0;
}
static inline u32 tcf_police_tcfp_mtu(const struct tc_action *act)
{
struct tcf_police *police = to_police(act);

3
net/sched/cls_api.c
View File

@ -3661,6 +3661,9 @@ int tc_setup_flow_action(struct flow_action *flow_action,
entry->police.burst = tcf_police_burst(act);
entry->police.rate_bytes_ps =
tcf_police_rate_bytes_ps(act);
entry->police.burst_pkt = tcf_police_burst_pkt(act);
entry->police.rate_pkt_ps =
tcf_police_rate_pkt_ps(act);
entry->police.mtu = tcf_police_tcfp_mtu(act);
entry->police.index = act->tcfa_index;
} else if (is_tcf_ct(act)) {