[dpdk-dev] [PATCH] net/ixgbe: enable jumbo frame for VF
Junyu Jiang
junyux.jiang at intel.com
Mon Dec 2 21:03:27 CET 2019
Enable jumbo frame for VF by configuring DPDK PF.
Signed-off-by: Junyu Jiang <junyux.jiang at 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
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