linux-kernel - [v2,net-next 3/4] net: qos: police action add index for tc flower offloading

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Message-Id: <20200624093631.13719-3-po.liu@nxp.com>
Date:   Wed, 24 Jun 2020 17:36:30 +0800
From:   Po Liu <po.liu@....com>
To:     davem@...emloft.net, linux-kernel@...r.kernel.org,
        netdev@...r.kernel.org, idosch@...sch.org
Cc:     jiri@...nulli.us, vinicius.gomes@...el.com, vlad@...lov.dev,
        claudiu.manoil@....com, vladimir.oltean@....com,
        alexandru.marginean@....com, michael.chan@...adcom.com,
        vishal@...lsio.com, saeedm@...lanox.com, leon@...nel.org,
        jiri@...lanox.com, idosch@...lanox.com,
        alexandre.belloni@...tlin.com, UNGLinuxDriver@...rochip.com,
        kuba@...nel.org, jhs@...atatu.com, xiyou.wangcong@...il.com,
        simon.horman@...ronome.com, pablo@...filter.org,
        moshe@...lanox.com, m-karicheri2@...com,
        andre.guedes@...ux.intel.com, stephen@...workplumber.org,
        Po Liu <Po.Liu@....com>
Subject: [v2,net-next 3/4] net: qos: police action add index for tc flower offloading

From: Po Liu <Po.Liu@....com>

Hardware device may include more than one police entry. Specifying the
action's index make it possible for several tc filters to share the same
police action when installing the filters.

Propagate this index to device drivers through the flow offload
intermediate representation, so that drivers could share a single
hardware policer between multiple filters.

v1->v2 changes:
- Update the commit message suggest by Ido Schimmel <idosch@...sch.org>

Signed-off-by: Po Liu <Po.Liu@....com>
---
 include/net/flow_offload.h | 1 +
 net/sched/cls_api.c        | 1 +
 2 files changed, 2 insertions(+)

diff --git a/include/net/flow_offload.h b/include/net/flow_offload.h
index c2ef19c6b27d..eed98075b1ae 100644
--- a/include/net/flow_offload.h
+++ b/include/net/flow_offload.h
@@ -232,6 +232,7 @@ struct flow_action_entry {
 			bool			truncate;
 		} sample;
 		struct {				/* FLOW_ACTION_POLICE */
+			u32			index;
 			s64			burst;
 			u64			rate_bytes_ps;
 			u32			mtu;
diff --git a/net/sched/cls_api.c b/net/sched/cls_api.c
index 6aba7d5ba1ec..fdc4c89ca1fa 100644
--- a/net/sched/cls_api.c
+++ b/net/sched/cls_api.c
@@ -3659,6 +3659,7 @@ int tc_setup_flow_action(struct flow_action *flow_action,
 			entry->police.rate_bytes_ps =
 				tcf_police_rate_bytes_ps(act);
 			entry->police.mtu = tcf_police_tcfp_mtu(act);
+			entry->police.index = act->tcfa_index;
 		} else if (is_tcf_ct(act)) {
 			entry->id = FLOW_ACTION_CT;
 			entry->ct.action = tcf_ct_action(act);
-- 
2.17.1