netdev - [PATCH v8 net-next 10/13] net: sched: save full flags for tc action

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Date:   Fri, 17 Dec 2021 19:16:26 +0100
From:   Simon Horman <simon.horman@...igine.com>
To:     David Miller <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>
Cc:     Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Andrew Lunn <andrew@...n.ch>,
        Claudiu Manoil <claudiu.manoil@....com>,
        Cong Wang <xiyou.wangcong@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Ido Schimmel <idosch@...dia.com>,
        Jamal Hadi Salim <jhs@...atatu.com>,
        Jiri Pirko <jiri@...nulli.us>,
        Leon Romanovsky <leon@...nel.org>,
        Michael Chan <michael.chan@...adcom.com>,
        Oz Shlomo <ozsh@...dia.com>, Petr Machata <petrm@...dia.com>,
        Roi Dayan <roid@...dia.com>,
        Saeed Mahameed <saeedm@...dia.com>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Vlad Buslov <vladbu@...dia.com>,
        Vladimir Oltean <vladimir.oltean@....com>,
        Baowen Zheng <baowen.zheng@...igine.com>,
        Louis Peens <louis.peens@...igine.com>,
        UNGLinuxDriver@...rochip.com, linux-kernel@...r.kernel.org,
        linux-rdma@...r.kernel.org, netdev@...r.kernel.org,
        oss-drivers@...igine.com, Simon Horman <simon.horman@...igine.com>
Subject: [PATCH v8 net-next 10/13] net: sched: save full flags for tc action

From: Baowen Zheng <baowen.zheng@...igine.com>

Save full action flags and return user flags when return flags to
user space.

Save full action flags to distinguish if the action is created
independent from classifier.

We made this change mainly for further patch to reoffload tc actions.

Signed-off-by: Baowen Zheng <baowen.zheng@...igine.com>
Signed-off-by: Simon Horman <simon.horman@...igine.com>
Acked-by: Jamal Hadi Salim <jhs@...atatu.com>
---
 net/sched/act_api.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/net/sched/act_api.c b/net/sched/act_api.c
index f9186f283488..b32680ad75d3 100644
--- a/net/sched/act_api.c
+++ b/net/sched/act_api.c
@@ -669,7 +669,7 @@ int tcf_idr_create(struct tc_action_net *tn, u32 index, struct nlattr *est,
 	p->tcfa_tm.install = jiffies;
 	p->tcfa_tm.lastuse = jiffies;
 	p->tcfa_tm.firstuse = 0;
-	p->tcfa_flags = flags & TCA_ACT_FLAGS_USER_MASK;
+	p->tcfa_flags = flags;
 	if (est) {
 		err = gen_new_estimator(&p->tcfa_bstats, p->cpu_bstats,
 					&p->tcfa_rate_est,
@@ -996,6 +996,7 @@ tcf_action_dump_1(struct sk_buff *skb, struct tc_action *a, int bind, int ref)
 	int err = -EINVAL;
 	unsigned char *b = skb_tail_pointer(skb);
 	struct nlattr *nest;
+	u32 flags;
 
 	if (tcf_action_dump_terse(skb, a, false))
 		goto nla_put_failure;
@@ -1010,9 +1011,10 @@ tcf_action_dump_1(struct sk_buff *skb, struct tc_action *a, int bind, int ref)
 			       a->used_hw_stats, TCA_ACT_HW_STATS_ANY))
 		goto nla_put_failure;
 
-	if (a->tcfa_flags &&
+	flags = a->tcfa_flags & TCA_ACT_FLAGS_USER_MASK;
+	if (flags &&
 	    nla_put_bitfield32(skb, TCA_ACT_FLAGS,
-			       a->tcfa_flags, a->tcfa_flags))
+			       flags, flags))
 		goto nla_put_failure;
 
 	if (nla_put_u32(skb, TCA_ACT_IN_HW_COUNT, a->in_hw_count))
-- 
2.20.1