[libvirt] [PATCH v2 04/14] nodedev: Use switch for virNodeDeviceObjHasCap and virNodeDeviceCapMatch
John Ferlan
jferlan at redhat.com
Fri May 26 12:22:26 UTC 2017
On 05/26/2017 03:14 AM, Peter Krempa wrote:
> On Thu, May 25, 2017 at 15:57:01 -0400, John Ferlan wrote:
>> In order to ensure that whenever something is added to virNodeDevCapType
>> that both functions are considered for processing of a new capability,
>> change the if-then-else construct into a switch statement.
>>
>> Signed-off-by: John Ferlan <jferlan at redhat.com>
>> ---
>> src/conf/virnodedeviceobj.c | 80 +++++++++++++++++++++++++++++++++------------
>> 1 file changed, 60 insertions(+), 20 deletions(-)
>>
>> diff --git a/src/conf/virnodedeviceobj.c b/src/conf/virnodedeviceobj.c
>> index bbb6eeb..913cdda 100644
>> --- a/src/conf/virnodedeviceobj.c
>> +++ b/src/conf/virnodedeviceobj.c
>> @@ -48,19 +48,41 @@ virNodeDeviceObjHasCap(const virNodeDeviceObj *dev,
>> while (caps) {
>> if (STREQ(cap, virNodeDevCapTypeToString(caps->data.type))) {
>> return 1;
>> - } else if (caps->data.type == VIR_NODE_DEV_CAP_SCSI_HOST) {
>> - if ((STREQ(cap, fc_host_cap) &&
>> - (caps->data.scsi_host.flags &
>> - VIR_NODE_DEV_CAP_FLAG_HBA_FC_HOST)) ||
>> - (STREQ(cap, vports_cap) &&
>> - (caps->data.scsi_host.flags &
>> - VIR_NODE_DEV_CAP_FLAG_HBA_VPORT_OPS)))
>> - return 1;
>> - } else if (caps->data.type == VIR_NODE_DEV_CAP_PCI_DEV) {
>> - if ((STREQ(cap, mdev_types)) &&
>> - (caps->data.pci_dev.flags &
>> - VIR_NODE_DEV_CAP_FLAG_PCI_MDEV))
>> - return 1;
>> + } else {
>> + switch (caps->data.type) {
>> + case VIR_NODE_DEV_CAP_PCI_DEV:
>> + if ((STREQ(cap, mdev_types)) &&
>> + (caps->data.pci_dev.flags &
>> + VIR_NODE_DEV_CAP_FLAG_PCI_MDEV))
>
> Since you are touching this, put this on a single line. It looks very
> ugly this way. It also fits into the 80 col boundary, so I don't see a
> reaosn for this.
For MDEV - it can fit, for SCSI_HOST, not as clean, but it could be:
if ((STREQ(cap, fc_host_cap) && (caps->data.scsi_host.flags &
VIR_NODE_DEV_CAP_FLAG_HBA_FC_HOST)) ||
(STREQ(cap, vports_cap) && (caps->data.scsi_host.flags &
VIR_NODE_DEV_CAP_FLAG_HBA_VPORT_OPS)))
return 1;
Although I'm not sure I like the way that looks.
So, as an option I could also:
...
virNodeDevCapSCSIHostPtr scsi_host;
...
and
case VIR_NODE_DEV_CAP_SCSI_HOST:
scsi_host = &caps->data.scsi_host;
if ((STREQ(cap, fc_host_cap) &&
(scsi_host->flags & VIR_NODE_DEV_CAP_FLAG_HBA_FC_HOST)) ||
(STREQ(cap, vports_cap) &&
(scsi_host->flags & VIR_NODE_DEV_CAP_FLAG_HBA_VPORT_OPS)))
return 1;
and
case VIR_NODE_DEV_CAP_SCSI_HOST:
scsi_host = &cap->data.scsi_host;
if (type == VIR_NODE_DEV_CAP_FC_HOST &&
(scsi_host->flags & VIR_NODE_DEV_CAP_FLAG_HBA_FC_HOST))
return true;
if (type == VIR_NODE_DEV_CAP_VPORTS &&
(scsi_host->flags & VIR_NODE_DEV_CAP_FLAG_HBA_VPORT_OPS))
return true;
But does that "violate" the too many changes at once "guideline"?
John
>
> ACK with this adjustment applied to the whole patch.
>
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