netdev - [iproute PATCH v2 3/4] tc: pedit: Fix retain value for ihl adjustments

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Message-Id: <1456944343-19058-4-git-send-email-phil@nwl.cc>
Date:	Wed,  2 Mar 2016 19:45:42 +0100
From:	Phil Sutter <phil@....cc>
To:	Stephen Hemminger <shemming@...cade.com>
Cc:	netdev@...r.kernel.org
Subject: [iproute PATCH v2 3/4] tc: pedit: Fix retain value for ihl adjustments

Since the IP Header Length field is just half a byte, adjust retain to
only match these bits so the Version field is not overwritten by
accident.

The whole concept is actually broken due to dependency on endianness
which pedit ignores.

Signed-off-by: Phil Sutter <phil@....cc>
---
 tc/p_ip.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tc/p_ip.c b/tc/p_ip.c
index 08fdbaa41fbf4..8f0649134566b 100644
--- a/tc/p_ip.c
+++ b/tc/p_ip.c
@@ -58,7 +58,7 @@ parse_ip(int *argc_p, char ***argv_p,struct tc_pedit_sel *sel,struct tc_pedit_ke
 	if (strcmp(*argv, "ihl") == 0) {
 		NEXT_ARG();
 		tkey->off = 0;
-		res = parse_cmd(&argc, &argv, 1, TU32,RU8,sel,tkey);
+		res = parse_cmd(&argc, &argv, 1, TU32, 0x0f, sel, tkey);
 		goto done;
 	}
 	if (strcmp(*argv, "protocol") == 0) {
-- 
2.7.2