From c6e0fc7a5ec0b890c35a3b5d4cc5e1f7794cc47f Mon Sep 17 00:00:00 2001
From: Andrea Claudi <aclaudi@redhat.com>
Date: Mon, 29 Apr 2019 20:07:22 +0200
Subject: [PATCH] tc/m_gact: Drop dead code

Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1465646
Upstream Status: iproute2.git commit 73aa988868e7e
Conflicts: context change due to missing commits:
* e67aba5595811 ("tc: actions: add helpers to parse and print control actions")
* 18f05d06016d9 ("tc: gact: fix control action parsing")

commit 73aa988868e7e068b4fc0daaca7cfdb3e07fe744
Author: Phil Sutter <phil@nwl.cc>
Date:   Thu Aug 17 19:09:31 2017 +0200

    tc/m_gact: Drop dead code

    The use of 'ok' variable in parse_gact() is ineffective: The second
    conditional increments it either if *argv is 'gact' or if
    parse_action_control() doesn't fail (in which case exit() is called).
    So this is effectively an unconditional increment and since no decrement
    happens anywhere, all remaining checks for 'ok != 0' can be dropped.

    Signed-off-by: Phil Sutter <phil@nwl.cc>
---
 tc/m_gact.c | 18 +++++-------------
 1 file changed, 5 insertions(+), 13 deletions(-)

diff --git a/tc/m_gact.c b/tc/m_gact.c
index 755a3bee2c2f2..0cb5222fd3817 100644
--- a/tc/m_gact.c
+++ b/tc/m_gact.c
@@ -86,7 +86,6 @@ parse_gact(struct action_util *a, int *argc_p, char ***argv_p,
 {
 	int argc = *argc_p;
 	char **argv = *argv_p;
-	int ok = 0;
 	int action = TC_POLICE_RECLASSIFY;
 	struct tc_gact p = { .action = TC_POLICE_RECLASSIFY };
 #ifdef CONFIG_GACT_PROB
@@ -100,25 +99,22 @@ parse_gact(struct action_util *a, int *argc_p, char ***argv_p,
 
 
 	if (matches(*argv, "gact") == 0) {
-		ok++;
+		argc--;
+		argv++;
 	} else {
 		action = get_act(&argv);
 		if (action != -10) {
 			p.action = action;
-			ok++;
+			argc--;
+			argv++;
 		} else {
 			explain();
 			return action;
 		}
 	}
 
-	if (ok) {
-		argc--;
-		argv++;
-	}
-
 #ifdef CONFIG_GACT_PROB
-	if (ok && argc > 0) {
+	if (argc > 0) {
 		if (matches(*argv, "random") == 0) {
 			rd = 1;
 			NEXT_ARG();
@@ -167,15 +163,11 @@ parse_gact(struct action_util *a, int *argc_p, char ***argv_p,
 			}
 			argc--;
 			argv++;
-			ok++;
 		} else if (matches(*argv, "help") == 0) {
 				usage();
 		}
 	}
 
-	if (!ok)
-		return -1;
-
 	tail = NLMSG_TAIL(n);
 	addattr_l(n, MAX_MSG, tca_id, NULL, 0);
 	addattr_l(n, MAX_MSG, TCA_GACT_PARMS, &p, sizeof(p));
-- 
2.21.0