[NET_SCHED]: Propagate nla_parse return value

nla_parse() returns more detailed errno codes, propagate them back on
error.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 12 insertions, 2 deletions

diff --git a/net/sched/sch_dsmark.c b/net/sched/sch_dsmark.c
index f183ab768873..f1d0a08aca75 100644
--- a/net/sched/sch_dsmark.c
+++ b/net/sched/sch_dsmark.c
@@ -116,9 +116,14 @@ static int dsmark_change(struct Qdisc *sch, u32 classid, u32 parent,
                 goto errout;
         }
 
-        if (!opt || nla_parse_nested(tb, TCA_DSMARK_MAX, opt, NULL))
+        if (!opt)
                 goto errout;
 
+        err = nla_parse_nested(tb, TCA_DSMARK_MAX, opt, NULL);
+        if (err < 0)
+                return err;
+
+        err = -EINVAL;
         if (tb[TCA_DSMARK_MASK]) {
                 if (nla_len(tb[TCA_DSMARK_MASK]) < sizeof(u8))
                         goto errout;
@@ -351,9 +356,14 @@ static int dsmark_init(struct Qdisc *sch, struct nlattr *opt)
 
         pr_debug("dsmark_init(sch %p,[qdisc %p],opt %p)\n", sch, p, opt);
 
-        if (!opt || nla_parse_nested(tb, TCA_DSMARK_MAX, opt, NULL) < 0)
+        if (!opt)
+                goto errout;
+
+        err = nla_parse_nested(tb, TCA_DSMARK_MAX, opt, NULL);
+        if (err < 0)
                 goto errout;
 
+        err = -EINVAL;
         if (nla_len(tb[TCA_DSMARK_INDICES]) < sizeof(u16))
                 goto errout;
         indices = nla_get_u16(tb[TCA_DSMARK_INDICES]);