There exists case that software sets mtu (i.e jumbo frame) of
ixgbe device when it's stopped. Before the fix, scattered_rx
is cleared during device stop, and setting jumbo frame mtu
after device stop will always fail as scattered_rx is 0.
---
drivers/net/ixgbe/ixgbe_ethdev.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ixgbe/ixgbe_ethdev.c b/drivers/net/ixgbe/ixgbe_ethdev.c
index 7b856bb..aa5ba8c 100644
--- a/drivers/net/ixgbe/ixgbe_ethdev.c
+++ b/drivers/net/ixgbe/ixgbe_ethdev.c
@@ -4671,6 +4671,7 @@ ixgbe_dev_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
struct ixgbe_hw *hw;
struct rte_eth_dev_info dev_info;
uint32_t frame_size = mtu + ETHER_HDR_LEN + ETHER_CRC_LEN;
+ struct rte_eth_rxmode *rx_conf = &dev->data->dev_conf.rxmode;
ixgbe_dev_info_get(dev, &dev_info);
@@ -4681,7 +4682,7 @@ ixgbe_dev_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
/* refuse mtu that requires the support of scattered packets when this
* feature has not been enabled before.
*/
- if (!dev->data->scattered_rx &&
+ if (!rx_conf->enable_scatter &&
(frame_size + 2 * IXGBE_VLAN_TAG_SIZE >
dev->data->min_rx_buf_size - RTE_PKTMBUF_HEADROOM))
return -EINVAL;
@@ -5939,6 +5940,7 @@ ixgbevf_dev_set_mtu(struct rte_eth_dev *dev, uint16_t mtu)
{
struct ixgbe_hw *hw;
uint32_t max_frame = mtu + ETHER_HDR_LEN + ETHER_CRC_LEN;
+ struct rte_eth_rxmode *rx_conf = &dev->data->dev_conf.rxmode;
hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
@@ -5948,7 +5950,7 @@ ixgbevf_dev_set_mtu(struct rte_eth_dev *dev, uint16_t mtu)
/* refuse mtu that requires the support of scattered packets when this
* feature has not been enabled before.
*/
- if (!dev->data->scattered_rx &&
+ if (!rx_conf->enable_scatter &&
(max_frame + 2 * IXGBE_VLAN_TAG_SIZE >
dev->data->min_rx_buf_size - RTE_PKTMBUF_HEADROOM))
return -EINVAL;
--
2.7.4
