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ixgbevf: Add VF DCB + SR-IOV support

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This change adds support for DCB and SR-IOV from the VF.  With this change
in place the VF will correctly use a traffic class other than 0 in the case
that the PF is configured with the default user priority belonging to a
traffic class other than 0.

Cc: Greg Rose <gregory.v.rose@intel.com>
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Sibai Li <sibai.li@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Alexander Duyck
2012-07-20 08:10:03 +00:00
committed by Jeff Kirsher
parent bffb3bc958
commit 56e94095ef
6 changed files with 232 additions and 8 deletions
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58
drivers/net/ethernet/intel/ixgbevf/vf.c
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@@ -513,6 +513,64 @@ int ixgbevf_negotiate_api_version(struct ixgbe_hw *hw, int api)
return err;
}
int ixgbevf_get_queues(struct ixgbe_hw *hw, unsigned int *num_tcs,
unsigned int *default_tc)
{
int err;
u32 msg[5];
/* do nothing if API doesn't support ixgbevf_get_queues */
switch (hw->api_version) {
case ixgbe_mbox_api_11:
break;
default:
return 0;
}
/* Fetch queue configuration from the PF */
msg[0] = IXGBE_VF_GET_QUEUE;
msg[1] = msg[2] = msg[3] = msg[4] = 0;
err = hw->mbx.ops.write_posted(hw, msg, 5);
if (!err)
err = hw->mbx.ops.read_posted(hw, msg, 5);
if (!err) {
msg[0] &= ~IXGBE_VT_MSGTYPE_CTS;
/*
* if we we didn't get an ACK there must have been
* some sort of mailbox error so we should treat it
* as such
*/
if (msg[0] != (IXGBE_VF_GET_QUEUE | IXGBE_VT_MSGTYPE_ACK))
return IXGBE_ERR_MBX;
/* record and validate values from message */
hw->mac.max_tx_queues = msg[IXGBE_VF_TX_QUEUES];
if (hw->mac.max_tx_queues == 0 ||
hw->mac.max_tx_queues > IXGBE_VF_MAX_TX_QUEUES)
hw->mac.max_tx_queues = IXGBE_VF_MAX_TX_QUEUES;
hw->mac.max_rx_queues = msg[IXGBE_VF_RX_QUEUES];
if (hw->mac.max_rx_queues == 0 ||
hw->mac.max_rx_queues > IXGBE_VF_MAX_RX_QUEUES)
hw->mac.max_rx_queues = IXGBE_VF_MAX_RX_QUEUES;
*num_tcs = msg[IXGBE_VF_TRANS_VLAN];
/* in case of unknown state assume we cannot tag frames */
if (*num_tcs > hw->mac.max_rx_queues)
*num_tcs = 1;
*default_tc = msg[IXGBE_VF_DEF_QUEUE];
/* default to queue 0 on out-of-bounds queue number */
if (*default_tc >= hw->mac.max_tx_queues)
*default_tc = 0;
}
return err;
}
static const struct ixgbe_mac_operations ixgbevf_mac_ops = {
.init_hw = ixgbevf_init_hw_vf,
.reset_hw = ixgbevf_reset_hw_vf,