ethdev: document mask requirements for RETA

Clarify the fact that mask bits should be set in rte_eth_reta_query.

Signed-off-by: Tom Barbette <barbette@kth.se>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>

diff --git a/lib/librte_ethdev/rte_ethdev.h b/lib/librte_ethdev/rte_ethdev.h
index 2065f54..40a068f 100644 (file)
--- a/lib/librte_ethdev/rte_ethdev.h
+++ b/lib/librte_ethdev/rte_ethdev.h
@@ -3037,7 +3037,8 @@ int rte_eth_dev_rss_reta_update(uint16_t port_id,
  * @param port_id
  *   The port identifier of the Ethernet device.
  * @param reta_conf
- *   RETA to query.
+ *   RETA to query. For each requested reta entry, corresponding bit
+ *   in mask must be set.
  * @param reta_size
  *   Redirection table size. The table size can be queried by
  *   rte_eth_dev_info_get().