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ixgbe: Enable Jumbo Frames on the X540 10Gigabit Controller

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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>
This commit is contained in:
Greg Rose 2011-01-26 01:06:07 +00:00 committed by Jeff Kirsher
parent 55ae22d08f
commit e9f9807262
3 changed files with 46 additions and 3 deletions
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18
drivers/net/ixgbe/ixgbe_main.c
View File

@ -3077,6 +3077,14 @@ void ixgbe_configure_rx_ring(struct ixgbe_adapter *adapter,
ixgbe_configure_srrctl(adapter, ring); ixgbe_configure_srrctl(adapter, ring);
ixgbe_configure_rscctl(adapter, ring); ixgbe_configure_rscctl(adapter, ring);
/* If operating in IOV mode set RLPML for X540 */
if ((adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) &&
hw->mac.type == ixgbe_mac_X540) {
rxdctl &= ~IXGBE_RXDCTL_RLPMLMASK;
rxdctl |= ((ring->netdev->mtu + ETH_HLEN +
ETH_FCS_LEN + VLAN_HLEN) | IXGBE_RXDCTL_RLPML_EN);
}
if (hw->mac.type == ixgbe_mac_82598EB) { if (hw->mac.type == ixgbe_mac_82598EB) {
/* /*
* enable cache line friendly hardware writes: * enable cache line friendly hardware writes:
@ -5441,8 +5449,14 @@ static int ixgbe_change_mtu(struct net_device *netdev, int new_mtu)
int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN; int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN;
/* MTU < 68 is an error and causes problems on some kernels */ /* MTU < 68 is an error and causes problems on some kernels */
if ((new_mtu < 68) || (max_frame > IXGBE_MAX_JUMBO_FRAME_SIZE)) if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED &&
return -EINVAL; hw->mac.type != ixgbe_mac_X540) {
if ((new_mtu < 68) || (max_frame > MAXIMUM_ETHERNET_VLAN_SIZE))
return -EINVAL;
} else {
if ((new_mtu < 68) || (max_frame > IXGBE_MAX_JUMBO_FRAME_SIZE))
return -EINVAL;
}
e_info(probe, "changing MTU from %d to %d\n", netdev->mtu, new_mtu); e_info(probe, "changing MTU from %d to %d\n", netdev->mtu, new_mtu);
/* must set new MTU before calling down or up */ /* must set new MTU before calling down or up */

29
drivers/net/ixgbe/ixgbe_sriov.c
View File

@ -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); 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) static void ixgbe_set_vmolr(struct ixgbe_hw *hw, u32 vf, bool aupe)
{ {
u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf)); 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); hash_list, vf);
break; break;
case IXGBE_VF_SET_LPE: case IXGBE_VF_SET_LPE:
WARN_ON((msgbuf[0] & 0xFFFF) == IXGBE_VF_SET_LPE); ixgbe_set_vf_lpe(adapter, msgbuf);
break; break;
case IXGBE_VF_SET_VLAN: case IXGBE_VF_SET_VLAN:
add = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) add = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK)

2
drivers/net/ixgbe/ixgbe_type.h
View File

@ -1680,6 +1680,8 @@
#define IXGBE_RXCTRL_DMBYPS 0x00000002 /* Descriptor Monitor Bypass */ #define IXGBE_RXCTRL_DMBYPS 0x00000002 /* Descriptor Monitor Bypass */
#define IXGBE_RXDCTL_ENABLE 0x02000000 /* Enable specific Rx Queue */ #define IXGBE_RXDCTL_ENABLE 0x02000000 /* Enable specific Rx Queue */
#define IXGBE_RXDCTL_VME 0x40000000 /* VLAN mode enable */ #define IXGBE_RXDCTL_VME 0x40000000 /* VLAN mode enable */
#define IXGBE_RXDCTL_RLPMLMASK 0x00003FFF /* Only supported on the X540 */
#define IXGBE_RXDCTL_RLPML_EN 0x00008000
#define IXGBE_FCTRL_SBP 0x00000002 /* Store Bad Packet */ #define IXGBE_FCTRL_SBP 0x00000002 /* Store Bad Packet */
#define IXGBE_FCTRL_MPE 0x00000100 /* Multicast Promiscuous Ena*/ #define IXGBE_FCTRL_MPE 0x00000100 /* Multicast Promiscuous Ena*/