Re: [dpdk-dev] [PATCH] net/ixgbe: enable jumbo frame for VF

[Ye Xiaolong <xiaolong.ye@intel.com>]

On 12/02, Junyu Jiang wrote:
>Enable jumbo frame for VF by configuring DPDK PF.
>
>Signed-off-by: Junyu Jiang <junyux.jiang@intel.com>
>---
> drivers/net/ixgbe/ixgbe_pf.c | 13 +++++++++++++
> 1 file changed, 13 insertions(+)
>
>diff --git a/drivers/net/ixgbe/ixgbe_pf.c b/drivers/net/ixgbe/ixgbe_pf.c
>index d0d85e138..66b856e11 100644
>--- a/drivers/net/ixgbe/ixgbe_pf.c
>+++ b/drivers/net/ixgbe/ixgbe_pf.c
>@@ -544,6 +544,7 @@ ixgbe_set_vf_lpe(struct rte_eth_dev *dev, __rte_unused uint32_t vf, uint32_t *ms
> 	struct ixgbe_hw *hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
> 	uint32_t new_mtu = msgbuf[1];
> 	uint32_t max_frs;
>+	uint32_t hlreg0;
> 	int max_frame = new_mtu + RTE_ETHER_HDR_LEN + RTE_ETHER_CRC_LEN;
> 
> 	/* X540 and X550 support jumbo frames in IOV mode */
>@@ -560,6 +561,18 @@ ixgbe_set_vf_lpe(struct rte_eth_dev *dev, __rte_unused uint32_t vf, uint32_t *ms
> 	max_frs = (IXGBE_READ_REG(hw, IXGBE_MAXFRS) &
> 		   IXGBE_MHADD_MFS_MASK) >> IXGBE_MHADD_MFS_SHIFT;
> 	if (max_frs < new_mtu) {
>+		hlreg0 = IXGBE_READ_REG(hw, IXGBE_HLREG0);
>+		if (new_mtu > RTE_ETHER_MAX_LEN) {
>+			dev->data->dev_conf.rxmode.offloads |=
>+				DEV_RX_OFFLOAD_JUMBO_FRAME;
>+			hlreg0 |= IXGBE_HLREG0_JUMBOEN;
>+		} else {
>+			dev->data->dev_conf.rxmode.offloads &=
>+				~DEV_RX_OFFLOAD_JUMBO_FRAME;
>+			hlreg0 &= ~IXGBE_HLREG0_JUMBOEN;
>+		}
>+		IXGBE_WRITE_REG(hw, IXGBE_HLREG0, hlreg0);
>+
> 		max_frs = new_mtu << IXGBE_MHADD_MFS_SHIFT;
> 		IXGBE_WRITE_REG(hw, IXGBE_MAXFRS, max_frs);
> 	}
>-- 
>2.17.1
>


Applied to dpdk-next-net-intel with wei's ack, Thanks.