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Diffstat (limited to 'drivers/net/ixgbe/ixgbe_sriov.c')
-rw-r--r--drivers/net/ixgbe/ixgbe_sriov.c116
1 files changed, 112 insertions, 4 deletions
diff --git a/drivers/net/ixgbe/ixgbe_sriov.c b/drivers/net/ixgbe/ixgbe_sriov.c
index 187b3a16ec1f..6e50d8328942 100644
--- a/drivers/net/ixgbe/ixgbe_sriov.c
+++ b/drivers/net/ixgbe/ixgbe_sriov.c
@@ -1,7 +1,7 @@
/*******************************************************************************
Intel 10 Gigabit PCI Express Linux driver
- Copyright(c) 1999 - 2010 Intel Corporation.
+ Copyright(c) 1999 - 2011 Intel Corporation.
This program is free software; you can redistribute it and/or modify it
under the terms and conditions of the GNU General Public License,
@@ -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)
@@ -451,9 +478,90 @@ out:
return err;
}
+static int ixgbe_link_mbps(int internal_link_speed)
+{
+ switch (internal_link_speed) {
+ case IXGBE_LINK_SPEED_100_FULL:
+ return 100;
+ case IXGBE_LINK_SPEED_1GB_FULL:
+ return 1000;
+ case IXGBE_LINK_SPEED_10GB_FULL:
+ return 10000;
+ default:
+ return 0;
+ }
+}
+
+static void ixgbe_set_vf_rate_limit(struct ixgbe_hw *hw, int vf, int tx_rate,
+ int link_speed)
+{
+ int rf_dec, rf_int;
+ u32 bcnrc_val;
+
+ if (tx_rate != 0) {
+ /* Calculate the rate factor values to set */
+ rf_int = link_speed / tx_rate;
+ rf_dec = (link_speed - (rf_int * tx_rate));
+ rf_dec = (rf_dec * (1<<IXGBE_RTTBCNRC_RF_INT_SHIFT)) / tx_rate;
+
+ bcnrc_val = IXGBE_RTTBCNRC_RS_ENA;
+ bcnrc_val |= ((rf_int<<IXGBE_RTTBCNRC_RF_INT_SHIFT) &
+ IXGBE_RTTBCNRC_RF_INT_MASK);
+ bcnrc_val |= (rf_dec & IXGBE_RTTBCNRC_RF_DEC_MASK);
+ } else {
+ bcnrc_val = 0;
+ }
+
+ IXGBE_WRITE_REG(hw, IXGBE_RTTDQSEL, 2*vf); /* vf Y uses queue 2*Y */
+ IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRC, bcnrc_val);
+}
+
+void ixgbe_check_vf_rate_limit(struct ixgbe_adapter *adapter)
+{
+ int actual_link_speed, i;
+ bool reset_rate = false;
+
+ /* VF Tx rate limit was not set */
+ if (adapter->vf_rate_link_speed == 0)
+ return;
+
+ actual_link_speed = ixgbe_link_mbps(adapter->link_speed);
+ if (actual_link_speed != adapter->vf_rate_link_speed) {
+ reset_rate = true;
+ adapter->vf_rate_link_speed = 0;
+ dev_info(&adapter->pdev->dev,
+ "Link speed has been changed. VF Transmit rate "
+ "is disabled\n");
+ }
+
+ for (i = 0; i < adapter->num_vfs; i++) {
+ if (reset_rate)
+ adapter->vfinfo[i].tx_rate = 0;
+
+ ixgbe_set_vf_rate_limit(&adapter->hw, i,
+ adapter->vfinfo[i].tx_rate,
+ actual_link_speed);
+ }
+}
+
int ixgbe_ndo_set_vf_bw(struct net_device *netdev, int vf, int tx_rate)
{
- return -EOPNOTSUPP;
+ struct ixgbe_adapter *adapter = netdev_priv(netdev);
+ struct ixgbe_hw *hw = &adapter->hw;
+ int actual_link_speed;
+
+ actual_link_speed = ixgbe_link_mbps(adapter->link_speed);
+ if ((vf >= adapter->num_vfs) || (!adapter->link_up) ||
+ (tx_rate > actual_link_speed) || (actual_link_speed != 10000) ||
+ ((tx_rate != 0) && (tx_rate <= 10)))
+ /* rate limit cannot be set to 10Mb or less in 10Gb adapters */
+ return -EINVAL;
+
+ adapter->vf_rate_link_speed = actual_link_speed;
+ adapter->vfinfo[vf].tx_rate = (u16)tx_rate;
+ ixgbe_set_vf_rate_limit(hw, vf, tx_rate, actual_link_speed);
+
+ return 0;
}
int ixgbe_ndo_get_vf_config(struct net_device *netdev,
@@ -464,7 +572,7 @@ int ixgbe_ndo_get_vf_config(struct net_device *netdev,
return -EINVAL;
ivi->vf = vf;
memcpy(&ivi->mac, adapter->vfinfo[vf].vf_mac_addresses, ETH_ALEN);
- ivi->tx_rate = 0;
+ ivi->tx_rate = adapter->vfinfo[vf].tx_rate;
ivi->vlan = adapter->vfinfo[vf].pf_vlan;
ivi->qos = adapter->vfinfo[vf].pf_qos;
return 0;