From: Po Liu <Po.Liu@nxp.com>
Date: Wed, 24 Jun 2020 17:36:28 +0800
Subject: net: qos: add tc police offloading action with max frame size limit
Patch-mainline: v5.9-rc1
Git-commit: 19e528dc9af29169fa7cdfa61071805fdef504c6
References: bsc#1176447
Current police offloading support the 'burst'' and 'rate_bytes_ps'. Some
hardware own the capability to limit the frame size. If the frame size
larger than the setting, the frame would be dropped. For the police
action itself already accept the 'mtu' parameter in tc command. But not
extend to tc flower offloading. So extend 'mtu' to tc flower offloading.
Signed-off-by: Po Liu <Po.Liu@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
include/net/flow_offload.h | 1 +
include/net/tc_act/tc_police.h | 10 ++++++++++
net/sched/cls_api.c | 1 +
3 files changed, 12 insertions(+)
--- a/include/net/flow_offload.h
+++ b/include/net/flow_offload.h
@@ -232,6 +232,7 @@ struct flow_action_entry {
struct { /* FLOW_ACTION_POLICE */
s64 burst;
u64 rate_bytes_ps;
+ u32 mtu;
} police;
struct { /* FLOW_ACTION_CT */
int action;
--- a/include/net/tc_act/tc_police.h
+++ b/include/net/tc_act/tc_police.h
@@ -67,4 +67,14 @@ static inline s64 tcf_police_tcfp_burst(
return params->tcfp_burst;
}
+static inline u32 tcf_police_tcfp_mtu(const struct tc_action *act)
+{
+ struct tcf_police *police = to_police(act);
+ struct tcf_police_params *params;
+
+ params = rcu_dereference_protected(police->params,
+ lockdep_is_held(&police->tcf_lock));
+ return params->tcfp_mtu;
+}
+
#endif /* __NET_TC_POLICE_H */
--- a/net/sched/cls_api.c
+++ b/net/sched/cls_api.c
@@ -3662,6 +3662,7 @@ int tc_setup_flow_action(struct flow_act
entry->police.burst = tcf_police_tcfp_burst(act);
entry->police.rate_bytes_ps =
tcf_police_rate_bytes_ps(act);
+ entry->police.mtu = tcf_police_tcfp_mtu(act);
} else if (is_tcf_ct(act)) {
entry->id = FLOW_ACTION_CT;
entry->ct.action = tcf_ct_action(act);