ethdev: allow maximum packet length to less than 1518

In ethdev, it ignores setting maximum packet length to less than
1518. The changes is to remove this limitation and let less than
1518 can be set for 'maximum packet length'.

Signed-off-by: Helin Zhang <helin.zhang@intel.com>
Signed-off-by: Jing Chen <jing.d.chen@intel.com>
Acked-by: Cunming Liang <cunming.liang@intel.com>
Acked-by: Jijiang Liu <jijiang.liu@intel.com>
Acked-by: Jingjing Wu <jingjing.wu@intel.com>
Acked-by: Heqing Zhu <heqing.zhu@intel.com>
Tested-by: Waterman Cao <waterman.cao@intel.com>

diff --git a/lib/librte_ether/rte_ethdev.c b/lib/librte_ether/rte_ethdev.c
index 42333ee..3d5d64c 100644 (file)
--- a/lib/librte_ether/rte_ethdev.c
+++ b/lib/librte_ether/rte_ethdev.c
@@ -661,9 +661,13 @@ rte_eth_dev_configure(uint8_t port_id, uint16_t nb_rx_q, uint16_t nb_tx_q,
                                (unsigned)ETHER_MIN_LEN);
                        return (-EINVAL);
                }
-       } else
-               /* Use default value */
-               dev->data->dev_conf.rxmode.max_rx_pkt_len = ETHER_MAX_LEN;
+       } else {
+               if (dev_conf->rxmode.max_rx_pkt_len < ETHER_MIN_LEN ||
+                       dev_conf->rxmode.max_rx_pkt_len > ETHER_MAX_LEN)
+                       /* Use default value */
+                       dev->data->dev_conf.rxmode.max_rx_pkt_len =
+                                                       ETHER_MAX_LEN;
+       }
 
        /* multipe queue mode checking */
        diag = rte_eth_dev_check_mq_mode(port_id, nb_rx_q, nb_tx_q, dev_conf);