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| author | Greg Rose <gregory.v.rose@intel.com> | 2011-01-26 01:06:07 +0000 |
|---|---|---|
| committer | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2011-02-24 02:36:34 -0800 |
| commit | e9f9807262083a663829d0154b3da10bafb713bb (patch) | |
| tree | 91a8403be54716972ad23fb3a4d11013ffeb5c3a /drivers/net/ixgbe/ixgbe_sriov.c | |
| parent | 55ae22d08fc9b531bc8a88b7306004e7053bb425 (diff) | |
| download | blackbird-op-linux-e9f9807262083a663829d0154b3da10bafb713bb.tar.gz blackbird-op-linux-e9f9807262083a663829d0154b3da10bafb713bb.zip | |
ixgbe: Enable Jumbo Frames on the X540 10Gigabit Controller
The X540 controller supports jumbo frames in SR-IOV mode. Allow
configuration of jumbo frames either in the PF driver or on behalf of
a VF.
Signed-off-by: Greg Rose <gregory.v.rose@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 | 29 |
1 files changed, 28 insertions, 1 deletions
diff --git a/drivers/net/ixgbe/ixgbe_sriov.c b/drivers/net/ixgbe/ixgbe_sriov.c index 187b3a16ec1f..fb4868d0a32d 100644 --- a/drivers/net/ixgbe/ixgbe_sriov.c +++ b/drivers/net/ixgbe/ixgbe_sriov.c @@ -110,6 +110,33 @@ static int ixgbe_set_vf_vlan(struct ixgbe_adapter *adapter, int add, int vid, return adapter->hw.mac.ops.set_vfta(&adapter->hw, vid, vf, (bool)add); } +void ixgbe_set_vf_lpe(struct ixgbe_adapter *adapter, u32 *msgbuf) +{ + struct ixgbe_hw *hw = &adapter->hw; + int new_mtu = msgbuf[1]; + u32 max_frs; + int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN; + + /* Only X540 supports jumbo frames in IOV mode */ + if (adapter->hw.mac.type != ixgbe_mac_X540) + return; + + /* MTU < 68 is an error and causes problems on some kernels */ + if ((new_mtu < 68) || (max_frame > IXGBE_MAX_JUMBO_FRAME_SIZE)) { + e_err(drv, "VF mtu %d out of range\n", new_mtu); + return; + } + + max_frs = (IXGBE_READ_REG(hw, IXGBE_MAXFRS) & + IXGBE_MHADD_MFS_MASK) >> IXGBE_MHADD_MFS_SHIFT; + if (max_frs < new_mtu) { + max_frs = new_mtu << IXGBE_MHADD_MFS_SHIFT; + IXGBE_WRITE_REG(hw, IXGBE_MAXFRS, max_frs); + } + + e_info(hw, "VF requests change max MTU to %d\n", new_mtu); +} + static void ixgbe_set_vmolr(struct ixgbe_hw *hw, u32 vf, bool aupe) { u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf)); @@ -302,7 +329,7 @@ static int ixgbe_rcv_msg_from_vf(struct ixgbe_adapter *adapter, u32 vf) hash_list, vf); break; case IXGBE_VF_SET_LPE: - WARN_ON((msgbuf[0] & 0xFFFF) == IXGBE_VF_SET_LPE); + ixgbe_set_vf_lpe(adapter, msgbuf); break; case IXGBE_VF_SET_VLAN: add = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) |
