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ixgbe: Reset max_vfs to zero when user request is out of range

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If the user request for the number of VFs in the max_vfs parameter is
out of range then reset the value to the default value of zero.  This
makes the behavior of the ixgbe driver the same as for the igb driver.

Signed-off-by: Greg Rose <gregory.v.rose@intel.com>
Tested-by: Robert Garrett <robertx.e.garrett@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Greg Rose 2012-04-17 04:29:29 +00:00 committed by Jeff Kirsher
parent 2ee7065fdd
commit 6b42a9c5b5
1 changed files with 4 additions and 3 deletions
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7
drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
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@ -133,7 +133,7 @@ static struct notifier_block dca_notifier = {
static unsigned int max_vfs;
module_param(max_vfs, uint, 0);
MODULE_PARM_DESC(max_vfs,
"Maximum number of virtual functions to allocate per physical function");
"Maximum number of virtual functions to allocate per physical function - default is zero and maximum value is 63");
#endif /* CONFIG_PCI_IOV */
static unsigned int allow_unsupported_sfp;
@ -6778,9 +6778,10 @@ static void __devinit ixgbe_probe_vf(struct ixgbe_adapter *adapter,
/* The 82599 supports up to 64 VFs per physical function
* but this implementation limits allocation to 63 so that
* basic networking resources are still available to the
* physical function
* physical function. If the user requests greater thn
* 63 VFs then it is an error - reset to default of zero.
*/
adapter->num_vfs = (max_vfs > 63) ? 63 : max_vfs;
adapter->num_vfs = (max_vfs > 63) ? 0 : max_vfs;
ixgbe_enable_sriov(adapter, ii);
#endif /* CONFIG_PCI_IOV */
}