From e542ab51ab27356ed2f2797b3ec2887ec0226bcf Mon Sep 17 00:00:00 2001 From: Steve Yang Date: Mon, 18 Jan 2021 07:04:26 +0000 Subject: [PATCH] net/hinic: fix jumbo frame flag condition for MTU set The jumbo frame uses the 'RTE_ETHER_MAX_LEN' as boundary condition. If the Ether overhead is larger than 18 when it supports VLAN tag, that will cause the jumbo flag rx offload is wrong when MTU size is 'RTE_ETHER_MTU'. This fix will normalize the boundary condition with 'RTE_ETHER_MTU' and overhead even though current overhead is 18. Fixes: 254bd849b132 ("net/hinic: set jumbo frame offload flag") Cc: stable@dpdk.org Signed-off-by: Steve Yang Reviewed-by: Ferruh Yigit --- drivers/net/hinic/hinic_pmd_ethdev.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/net/hinic/hinic_pmd_ethdev.c b/drivers/net/hinic/hinic_pmd_ethdev.c index 62642354cf..5a2c171099 100644 --- a/drivers/net/hinic/hinic_pmd_ethdev.c +++ b/drivers/net/hinic/hinic_pmd_ethdev.c @@ -75,6 +75,9 @@ #define HINIC_PKTLEN_TO_MTU(pktlen) \ ((pktlen) - (ETH_HLEN + ETH_CRC_LEN)) +/* The max frame size with default MTU */ +#define HINIC_ETH_MAX_LEN (RTE_ETHER_MTU + ETH_HLEN + ETH_CRC_LEN) + /* lro numer limit for one packet */ #define HINIC_LRO_WQE_NUM_DEFAULT 8 @@ -1556,7 +1559,7 @@ static int hinic_dev_set_mtu(struct rte_eth_dev *dev, uint16_t mtu) /* update max frame size */ frame_size = HINIC_MTU_TO_PKTLEN(mtu); - if (frame_size > RTE_ETHER_MAX_LEN) + if (frame_size > HINIC_ETH_MAX_LEN) dev->data->dev_conf.rxmode.offloads |= DEV_RX_OFFLOAD_JUMBO_FRAME; else