diff options
Diffstat (limited to 'lib/route/tc.c')
| -rw-r--r-- | lib/route/tc.c | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/lib/route/tc.c b/lib/route/tc.c index 4b185ed..6b423a0 100644 --- a/lib/route/tc.c +++ b/lib/route/tc.c @@ -582,15 +582,17 @@ void rtnl_tc_set_chain(struct rtnl_tc *tc, uint32_t chain) /** * Return chain index of traffic control object * @arg tc traffic control object + * @arg out_value output argument. * - * @return chain index of traffic control object or 0 if not set. + * @return 0 of the output value was successfully returned, or a negative + * error code on failure. */ -uint32_t rtnl_tc_get_chain(struct rtnl_tc *tc) +int rtnl_tc_get_chain(struct rtnl_tc *tc, uint32_t *out_value) { - if (tc->ce_mask & TCA_ATTR_CHAIN) - return tc->tc_chain; - else - return 0; + if (!(tc->ce_mask & TCA_ATTR_CHAIN)) + return -NLE_MISSING_ATTR; + *out_value = tc->tc_chain; + return 0; } /** @} */ |