netdev - [PATCH iproute2] tc: simple: don't hardcode the control action

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Message-Id: <25d2af8d9fc5af184ad1694c2963403753aef53e.1559294588.git.dcaratti@redhat.com>
Date:   Fri, 31 May 2019 11:34:46 +0200
From:   Davide Caratti <dcaratti@...hat.com>
To:     aclaudi@...hat.com, marcelo.leitner@...il.com,
        Stephen Hemminger <stephen@...workplumber.org>,
        netdev@...r.kernel.org
Subject: [PATCH iproute2] tc: simple: don't hardcode the control action

don't hardcode the 'pipe' control action, so that the following TDC test

 b776 - Replace simple action with invalid goto chain control

can detect kernels that correctly validate 'goto chain' control action.

CC: Andrea Claudi <aclaudi@...hat.com>
CC: Marcelo Ricardo Leitner <marcelo.leitner@...il.com>
Signed-off-by: Davide Caratti <dcaratti@...hat.com>
---
 tc/m_simple.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/tc/m_simple.c b/tc/m_simple.c
index 886606f9f8b4..e3c8a60ff64a 100644
--- a/tc/m_simple.c
+++ b/tc/m_simple.c
@@ -119,6 +119,9 @@ parse_simple(struct action_util *a, int *argc_p, char ***argv_p, int tca_id,
 		}
 	}
 
+	parse_action_control_dflt(&argc, &argv, &sel.action, false,
+				  TC_ACT_PIPE);
+
 	if (argc) {
 		if (matches(*argv, "index") == 0) {
 			NEXT_ARG();
@@ -144,8 +147,6 @@ parse_simple(struct action_util *a, int *argc_p, char ***argv_p, int tca_id,
 		return -1;
 	}
 
-	sel.action = TC_ACT_PIPE;
-
 	tail = addattr_nest(n, MAX_MSG, tca_id);
 	addattr_l(n, MAX_MSG, TCA_DEF_PARMS, &sel, sizeof(sel));
 	if (simpdata)
-- 
2.20.1