diff options
| author | Lior Levy <lior.levy@intel.com> | 2011-06-25 11:09:08 +0400 |
|---|---|---|
| committer | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2011-06-25 11:10:34 +0400 |
| commit | 7555e83df399ef35e031b137442eac2b1894b993 (patch) | |
| tree | 1181b29beb0470cd5c419d1036c123d64049563d /drivers | |
| parent | a535c30e9e98d201089503a0ffa0093cba16e796 (diff) | |
| download | linux-7555e83df399ef35e031b137442eac2b1894b993.tar.xz | |
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')
| -rw-r--r-- | drivers/net/ixgbe/ixgbe_sriov.c | 16 | ||||
| -rw-r--r-- | drivers/net/ixgbe/ixgbe_type.h | 2 |
2 files changed, 17 insertions, 1 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); } diff --git a/drivers/net/ixgbe/ixgbe_type.h b/drivers/net/ixgbe/ixgbe_type.h index 1eefc0c68409..e0d970ebab7a 100644 --- a/drivers/net/ixgbe/ixgbe_type.h +++ b/drivers/net/ixgbe/ixgbe_type.h @@ -534,7 +534,7 @@ #define IXGBE_RTTBCNRC_RF_INT_SHIFT 14 #define IXGBE_RTTBCNRC_RF_INT_MASK \ (IXGBE_RTTBCNRC_RF_DEC_MASK << IXGBE_RTTBCNRC_RF_INT_SHIFT) - +#define IXGBE_RTTBCNRM 0x04980 /* FCoE DMA Context Registers */ #define IXGBE_FCPTRL 0x02410 /* FC User Desc. PTR Low */ |