From 1d57225d0e6992d3671843cdfc3efe10cf5b068c Mon Sep 17 00:00:00 2001 From: Steve Yang Date: Mon, 18 Jan 2021 07:04:09 +0000 Subject: [PATCH] net/dpaa: fix jumbo frame flag condition for MTU set The jumbo frame uses the 'RTE_ETHER_MAX_LEN' as boundary condition, but 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 change the boundary condition with 'RTE_ETHER_MTU' and overhead, that perhaps impacts the cases of the jumbo frame related. Fixes: 25f854197abc ("net/dpaa: support jumbo frames") Cc: stable@dpdk.org Signed-off-by: Steve Yang Acked-by: Hemant Agrawal --- drivers/net/dpaa/dpaa_ethdev.c | 2 +- drivers/net/dpaa/dpaa_ethdev.h | 4 ++++ 2 files changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/net/dpaa/dpaa_ethdev.c b/drivers/net/dpaa/dpaa_ethdev.c index f00279e004..0c87c136d7 100644 --- a/drivers/net/dpaa/dpaa_ethdev.c +++ b/drivers/net/dpaa/dpaa_ethdev.c @@ -184,7 +184,7 @@ dpaa_mtu_set(struct rte_eth_dev *dev, uint16_t mtu) return -EINVAL; } - if (frame_size > RTE_ETHER_MAX_LEN) + if (frame_size > DPAA_ETH_MAX_LEN) dev->data->dev_conf.rxmode.offloads |= DEV_RX_OFFLOAD_JUMBO_FRAME; else diff --git a/drivers/net/dpaa/dpaa_ethdev.h b/drivers/net/dpaa/dpaa_ethdev.h index 659bceb467..a858b1372c 100644 --- a/drivers/net/dpaa/dpaa_ethdev.h +++ b/drivers/net/dpaa/dpaa_ethdev.h @@ -51,6 +51,10 @@ #define VLAN_TAG_SIZE 4 /** < Vlan Header Length */ #endif +#define DPAA_ETH_MAX_LEN (RTE_ETHER_MTU + \ + RTE_ETHER_HDR_LEN + RTE_ETHER_CRC_LEN + \ + VLAN_TAG_SIZE) + /* PCD frame queues */ #define DPAA_DEFAULT_NUM_PCD_QUEUES 1 #define DPAA_VSP_PROFILE_MAX_NUM 8 -- 2.20.1