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path: root/drivers/net/ixgbe/ixgbe_sriov.c
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Diffstat (limited to 'drivers/net/ixgbe/ixgbe_sriov.c')
-rw-r--r--drivers/net/ixgbe/ixgbe_sriov.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/net/ixgbe/ixgbe_sriov.c b/drivers/net/ixgbe/ixgbe_sriov.c
index ac99b0458fe2..d99d01e21326 100644
--- a/drivers/net/ixgbe/ixgbe_sriov.c
+++ b/drivers/net/ixgbe/ixgbe_sriov.c
@@ -605,6 +605,22 @@ static void ixgbe_set_vf_rate_limit(struct ixgbe_hw *hw, int vf, int tx_rate,
}
IXGBE_WRITE_REG(hw, IXGBE_RTTDQSEL, 2*vf); /* vf Y uses queue 2*Y */
+ /*
+ * Set global transmit compensation time to the MMW_SIZE in RTTBCNRM
+ * register. Typically MMW_SIZE=0x014 if 9728-byte jumbo is supported
+ * and 0x004 otherwise.
+ */
+ switch (hw->mac.type) {
+ case ixgbe_mac_82599EB:
+ IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x4);
+ break;
+ case ixgbe_mac_X540:
+ IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x14);
+ break;
+ default:
+ break;
+ }
+
IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRC, bcnrc_val);
}