[dpdk-dev] [RFC] ethdev: add a field for rte_eth_rxq_info

[Chengchang Tang <tangchengchang@huawei.com>]

In common practice, PMD configure the rx_buf_size according to the data room
size of the object in mempool. But in fact the final value is related to the
specifications of hw, and its values will affect the number of fragments in
recieving pkts.

At present, we seem to have no way to espose relevant information to upper
layer users.

Add a field named rx_bufsize in rte_eth_rxq_info to indicate the buffer size
used in recieving pkts for hw.

Signed-off-by: Chengchang Tang <tangchengchang@huawei.com>
---
 lib/librte_ethdev/rte_ethdev.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/librte_ethdev/rte_ethdev.h b/lib/librte_ethdev/rte_ethdev.h
index 0f6d053..82b7e98 100644
--- a/lib/librte_ethdev/rte_ethdev.h
+++ b/lib/librte_ethdev/rte_ethdev.h
@@ -1306,6 +1306,7 @@ struct rte_eth_rxq_info {
 	struct rte_eth_rxconf conf; /**< queue config parameters. */
 	uint8_t scattered_rx;       /**< scattered packets RX supported. */
 	uint16_t nb_desc;           /**< configured number of RXDs. */
+	uint16_t rx_bufsize;        /**< size of RX buffer. */
 } __rte_cache_min_aligned;

 /**
--
2.7.4