[Linuxptp-devel] [PATCH RFC 1/7] rtnl: Fix rtnl_rtattr_parse() to process max attribute.

[Miroslav L. <mli...@re...>]

Initialize the whole array passed to rtnl_rtattr_parse() and don't
ignore the last attribute with the maximum value. This will be needed to
get the ETHTOOL_A_PHC_VCLOCKS_INDEX attribute.

Signed-off-by: Miroslav Lichvar <mli...@re...>
Cc: Hangbin Liu <liu...@gm...>
---
 rtnl.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/rtnl.c b/rtnl.c
index fe625d6..88a749f 100644
--- a/rtnl.c
+++ b/rtnl.c
@@ -178,10 +178,10 @@ static int rtnl_rtattr_parse(struct rtattr *tb[], int max, struct rtattr *rta, i
 {
 	unsigned short type;
 
-	memset(tb, 0, sizeof(struct rtattr *) * max);
+	memset(tb, 0, sizeof(struct rtattr *) * (max + 1));
 	while (RTA_OK(rta, len)) {
 		type = rta->rta_type;
-		if ((type < max) && (!tb[type]))
+		if ((type <= max) && (!tb[type]))
 			tb[type] = rta;
 		rta = RTA_NEXT(rta, len);
 	}
-- 
2.33.1