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authorCong Wang <xiyou.wangcong@gmail.com>2019-10-07 13:26:28 -0700
committerJakub Kicinski <jakub.kicinski@netronome.com>2019-10-08 16:21:58 -0700
commit6f96c3c6904c26cea9ca2726d5d8a9b0b8205b3c (patch)
tree9f626d3ab135a6964b4c96699694db5a1891d91d /net/sched/sch_api.c
parent0041412694eca70387aee4076254fbed8222700a (diff)
net_sched: fix backward compatibility for TCA_KIND
Marcelo noticed a backward compatibility issue of TCA_KIND after we move from NLA_STRING to NLA_NUL_STRING, so it is probably too late to change it. Instead, to make everyone happy, we can just insert a NUL to terminate the string with nla_strlcpy() like we do for TC actions. Fixes: 62794fc4fbf5 ("net_sched: add max len check for TCA_KIND") Reported-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Cc: Jamal Hadi Salim <jhs@mojatatu.com> Cc: Jiri Pirko <jiri@resnulli.us> Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com> Reviewed-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Diffstat (limited to 'net/sched/sch_api.c')
-rw-r--r--net/sched/sch_api.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/net/sched/sch_api.c b/net/sched/sch_api.c
index 81d58b280612..1047825d9f48 100644
--- a/net/sched/sch_api.c
+++ b/net/sched/sch_api.c
@@ -1390,8 +1390,7 @@ check_loop_fn(struct Qdisc *q, unsigned long cl, struct qdisc_walker *w)
}
const struct nla_policy rtm_tca_policy[TCA_MAX + 1] = {
- [TCA_KIND] = { .type = NLA_NUL_STRING,
- .len = IFNAMSIZ - 1 },
+ [TCA_KIND] = { .type = NLA_STRING },
[TCA_RATE] = { .type = NLA_BINARY,
.len = sizeof(struct tc_estimator) },
[TCA_STAB] = { .type = NLA_NESTED },