libxt_TOS: make sure --set-tos value/mask is recognized

Only when a 'stop' pointer is passed, the string may consist of more
than just a number.

Reported-by: Anonymous
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
Signed-off-by: Patrick McHardy <kaber@trash.net>

diff --git a/extensions/tos_values.c b/extensions/tos_values.c
index 1630834e6df3824c9a4c3797795cf285ec767aa4..4c0b0bcb1ebd521855ad1c8018e524bd5bfab03c 100644 (file)
--- a/extensions/tos_values.c
+++ b/extensions/tos_values.c
@@ -56,8 +56,9 @@ static bool tos_parse_symbolic(const char *str, struct tos_value_mask *tvm,
 {
        const unsigned int max = 255;
        const struct tos_symbol_info *symbol;
+       char *tmp;
 
-       if (strtonum(str, NULL, NULL, 0, max))
+       if (strtonum(str, &tmp, NULL, 0, max))
                return tos_parse_numeric(str, tvm, max);
 
        /* Do not consider ECN bits */