From 22d0e5aed3c22bd8b08d58cfd2ed261d5e45ae9c Mon Sep 17 00:00:00 2001 From: Jia Yu Date: Thu, 27 Apr 2017 23:11:31 -0700 Subject: [PATCH] net/ixgbe: fix setting MTU on stopped device 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. Signed-off-by: Jia Yu Acked-by: Wenzhuo Lu --- 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 210610eaac..ec667d826c 100644 --- a/drivers/net/ixgbe/ixgbe_ethdev.c +++ b/drivers/net/ixgbe/ixgbe_ethdev.c @@ -4689,6 +4689,7 @@ 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); @@ -4699,7 +4700,7 @@ 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; @@ -5965,6 +5966,7 @@ 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); @@ -5974,7 +5976,7 @@ 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; -- 2.20.1