diff options
| author | Lior Levy <lior.levy@intel.com> | 2011-06-25 00:09:08 -0700 |
|---|---|---|
| committer | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2011-06-25 00:10:34 -0700 |
| commit | 7555e83df399ef35e031b137442eac2b1894b993 (patch) | |
| tree | 1181b29beb0470cd5c419d1036c123d64049563d /drivers/net/ixgbe/ixgbe_sriov.c | |
| parent | a535c30e9e98d201089503a0ffa0093cba16e796 (diff) | |
ixgbe: A fix to VF TX rate limit
There is a need to configure MMW_SIZE in register RTTBCNRM with a correct
value (0x4 for non jumbo frames and 0x14 for jumbo frames support).
For 82599 the value is 0x4 and for X540 the value is 0x14.
Signed-off-by: Lior Levy <lior.levy@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net/ixgbe/ixgbe_sriov.c')
| -rw-r--r-- | drivers/net/ixgbe/ixgbe_sriov.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/net/ixgbe/ixgbe_sriov.c b/drivers/net/ixgbe/ixgbe_sriov.c index ac99b0458fe..d99d01e2132 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); } |