netdev - [RFC PATCH iproute2 5/5] act/ct: add support for clear flag

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Date:   Fri, 25 Jan 2019 00:33:33 -0200
From:   Marcelo Ricardo Leitner <mleitner@...hat.com>
To:     Guy Shattah <sguy@...lanox.com>,
        Marcelo Leitner <mleitner@...hat.com>,
        Aaron Conole <aconole@...hat.com>,
        John Hurley <john.hurley@...ronome.com>,
        Simon Horman <simon.horman@...ronome.com>,
        Justin Pettit <jpettit@....org>,
        Gregory Rose <gvrose8192@...il.com>,
        Eelco Chaudron <echaudro@...hat.com>,
        Flavio Leitner <fbl@...hat.com>,
        Florian Westphal <fwestpha@...hat.com>,
        Jiri Pirko <jiri@...nulli.us>, Rashid Khan <rkhan@...hat.com>,
        Sushil Kulkarni <sukulkar@...hat.com>,
        Andy Gospodarek <andrew.gospodarek@...adcom.com>,
        Roi Dayan <roid@...lanox.com>,
        Yossi Kuperman <yossiku@...lanox.com>,
        Or Gerlitz <ogerlitz@...lanox.com>,
        Rony Efraim <ronye@...lanox.com>,
        "davem@...emloft.net" <davem@...emloft.net>
Cc:     netdev@...r.kernel.org
Subject: [RFC PATCH iproute2 5/5] act/ct: add support for clear flag

Same comment as in the kernel patch: parsing and argument checking should
be done better here.

Signed-off-by: Marcelo Ricardo Leitner <mleitner@...hat.com>
---
 include/uapi/linux/tc_act/tc_ct.h | 1 +
 tc/m_ct.c                         | 7 ++++++-
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/include/uapi/linux/tc_act/tc_ct.h b/include/uapi/linux/tc_act/tc_ct.h
index 009e53ee83fb3125bc5c4ca86954af3bf6a0287a..636f435b86e006aa36034f86c65fd5c220ca8a13 100644
--- a/include/uapi/linux/tc_act/tc_ct.h
+++ b/include/uapi/linux/tc_act/tc_ct.h
@@ -26,6 +26,7 @@ enum {
 enum {
 	TC_CT_COMMIT,
 	TC_CT_FORCE,
+	TC_CT_CLEAR,
 	__TC_CT_MAX
 };
 #define TC_CT_MAX (__TC_CT_MAX - 1)
diff --git a/tc/m_ct.c b/tc/m_ct.c
index c3c1a66848ae52c4522ac7e07822febf2b52e5f1..0221fc666a84dc3df73eff97beca997b9b11a9f0 100644
--- a/tc/m_ct.c
+++ b/tc/m_ct.c
@@ -27,7 +27,7 @@ static void
 explain(void)
 {
 	fprintf(stderr,
-		"Usage: ct [mark <mark>] [zone <zone>] [label <label>] [chain <chain>] [commit [force]]\n"
+		"Usage: ct [mark <mark>] [zone <zone>] [label <label>] [chain <chain>] [commit [force]] [clear]\n"
 		"where:\n");
 }
 
@@ -239,6 +239,11 @@ out:
 		flags |= BIT(TC_CT_FORCE);
 		goto again;
 	}
+	if (!matches(*argv, "clear")) {
+		NEXT_ARG_FWD();
+		flags |= BIT(TC_CT_CLEAR);
+		goto again;
+	}
 /*	if (!matches(*argv, "state")) {
 		NEXT_ARG();
 		ct_parse_u8(*argv,
-- 
2.20.1