[libvirt] [PATCH v2 1/2] util: Introduce flags field for macvtap creation
Matthew Rosato
mjrosato at linux.vnet.ibm.com
Thu Aug 28 13:41:55 UTC 2014
On 08/28/2014 08:45 AM, Martin Kletzander wrote:
> On Wed, Aug 27, 2014 at 10:34:13AM -0400, Matthew Rosato wrote:
>> Currently, there is one flag passed in during macvtap creation
>> (withTap) -- Let's convert this field to an unsigned int flag
>> field for future expansion.
>>
>> Signed-off-by: Matthew Rosato <mjrosato at linux.vnet.ibm.com>
>> ---
>> src/lxc/lxc_process.c | 4 ++--
>> src/qemu/qemu_command.c | 6 ++++--
>> src/util/virnetdevmacvlan.c | 28 +++++++++++++++++-----------
>> src/util/virnetdevmacvlan.h | 14 ++++++++++----
>> 4 files changed, 33 insertions(+), 19 deletions(-)
>>
>> diff --git a/src/lxc/lxc_process.c b/src/lxc/lxc_process.c
>> index 3353dc1..ed30c37 100644
>> --- a/src/lxc/lxc_process.c
>> +++ b/src/lxc/lxc_process.c
>> @@ -331,12 +331,12 @@ char
>> *virLXCProcessSetupInterfaceDirect(virConnectPtr conn,
>> net->ifname, &net->mac,
>> virDomainNetGetActualDirectDev(net),
>> virDomainNetGetActualDirectMode(net),
>> - false, false, def->uuid,
>> + false, def->uuid,
>> virDomainNetGetActualVirtPortProfile(net),
>> &res_ifname,
>> VIR_NETDEV_VPORT_PROFILE_OP_CREATE,
>> cfg->stateDir,
>> - virDomainNetGetActualBandwidth(net)) < 0)
>> + virDomainNetGetActualBandwidth(net), 0) < 0)
>> goto cleanup;
>>
>> ret = res_ifname;
>> diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
>> index 9241f57..1f71fa3 100644
>> --- a/src/qemu/qemu_command.c
>> +++ b/src/qemu/qemu_command.c
>> @@ -177,6 +177,7 @@ qemuPhysIfaceConnect(virDomainDefPtr def,
>> char *res_ifname = NULL;
>> int vnet_hdr = 0;
>> virQEMUDriverConfigPtr cfg = virQEMUDriverGetConfig(driver);
>> + unsigned int macvlan_create_flags =
>> VIR_NETDEV_MACVLAN_CREATE_WITH_TAP;
>>
>> if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_VNET_HDR) &&
>> net->model && STREQ(net->model, "virtio"))
>> @@ -186,11 +187,12 @@ qemuPhysIfaceConnect(virDomainDefPtr def,
>> net->ifname, &net->mac,
>> virDomainNetGetActualDirectDev(net),
>> virDomainNetGetActualDirectMode(net),
>> - true, vnet_hdr, def->uuid,
>> + vnet_hdr, def->uuid,
>> virDomainNetGetActualVirtPortProfile(net),
>> &res_ifname,
>> vmop, cfg->stateDir,
>> - virDomainNetGetActualBandwidth(net));
>> + virDomainNetGetActualBandwidth(net),
>> + macvlan_create_flags);
>> if (rc >= 0) {
>> virDomainAuditNetDevice(def, net, res_ifname, true);
>> VIR_FREE(net->ifname);
>> diff --git a/src/util/virnetdevmacvlan.c b/src/util/virnetdevmacvlan.c
>> index 054194b..9ddeca4 100644
>> --- a/src/util/virnetdevmacvlan.c
>> +++ b/src/util/virnetdevmacvlan.c
>> @@ -790,6 +790,7 @@ virNetDevMacVLanVPortProfileRegisterCallback(const
>> char *ifname,
>> * @macaddress: The MAC address for the macvtap device
>> * @linkdev: The interface name of the NIC to connect to the external
>> bridge
>> * @mode: int describing the mode for 'bridge', 'vepa', 'private' or
>> 'passthru'.
>> + * @flags: OR of virNetDevMacVLanCreateFlags.
>
> I took the liberty of moving this as a last parameter as well.
>
>> * @vnet_hdr: 1 to enable IFF_VNET_HDR, 0 to disable it
>> * @vmuuid: The UUID of the VM the macvtap belongs to
>> * @virtPortProfile: pointer to object holding the virtual port
>> profile data
>> @@ -797,25 +798,29 @@
>> virNetDevMacVLanVPortProfileRegisterCallback(const char *ifname,
>> * interface will be stored into if everything succeeded. It is up
>> * to the caller to free the string.
>> *
>> - * Returns file descriptor of the tap device in case of success with
>> @withTap,
>> - * otherwise returns 0; returns -1 on error.
>> + * Returns file descriptor of the tap device in case of success with
>> + * @flags & VIR_NETDEV_MACVLAN_CREATE_WITH_TAP, otherwise returns 0;
>> returns
>> + * -1 on error.
>> */
>> int virNetDevMacVLanCreateWithVPortProfile(const char *tgifname,
>> const virMacAddr *macaddress,
>> const char *linkdev,
>> virNetDevMacVLanMode mode,
>> - bool withTap,
>> int vnet_hdr,
>> const unsigned char *vmuuid,
>> virNetDevVPortProfilePtr
>> virtPortProfile,
>> char **res_ifname,
>> virNetDevVPortProfileOp vmOp,
>> char *stateDir,
>> - virNetDevBandwidthPtr
>> bandwidth)
>> + virNetDevBandwidthPtr
>> bandwidth,
>> + unsigned int flags)
>> {
>> - const char *type = withTap ? "macvtap" : "macvlan";
>> - const char *prefix = withTap ? MACVTAP_NAME_PREFIX :
>> MACVLAN_NAME_PREFIX;
>> - const char *pattern = withTap ? MACVTAP_NAME_PATTERN :
>> MACVLAN_NAME_PATTERN;
>> + const char *type = (flags & VIR_NETDEV_MACVLAN_CREATE_WITH_TAP) ?
>> + "macvtap" : "macvlan";
>> + const char *prefix = (flags & VIR_NETDEV_MACVLAN_CREATE_WITH_TAP) ?
>> + MACVTAP_NAME_PREFIX : MACVLAN_NAME_PREFIX;
>> + const char *pattern = (flags & VIR_NETDEV_MACVLAN_CREATE_WITH_TAP) ?
>> + MACVTAP_NAME_PATTERN : MACVLAN_NAME_PATTERN;
>> int c, rc;
>> char ifname[IFNAMSIZ];
>> int retries, do_retry = 0;
>> @@ -903,7 +908,7 @@ int virNetDevMacVLanCreateWithVPortProfile(const
>> char *tgifname,
>> goto disassociate_exit;
>> }
>>
>> - if (withTap) {
>> + if (flags & VIR_NETDEV_MACVLAN_CREATE_WITH_TAP) {
>> if ((rc = virNetDevMacVLanTapOpen(cr_ifname, 10)) < 0)
>> goto disassociate_exit;
>>
>> @@ -922,7 +927,7 @@ int virNetDevMacVLanCreateWithVPortProfile(const
>> char *tgifname,
>> }
>>
>> if (virNetDevBandwidthSet(cr_ifname, bandwidth, false) < 0) {
>> - if (withTap)
>> + if (flags & VIR_NETDEV_MACVLAN_CREATE_WITH_TAP)
>> VIR_FORCE_CLOSE(rc); /* sets rc to -1 */
>> else
>> rc = -1;
>> @@ -1066,15 +1071,16 @@ int
>> virNetDevMacVLanCreateWithVPortProfile(const char *ifname
>> ATTRIBUTE_UNUSED,
>> const virMacAddr
>> *macaddress ATTRIBUTE_UNUSED,
>> const char *linkdev
>> ATTRIBUTE_UNUSED,
>> virNetDevMacVLanMode mode
>> ATTRIBUTE_UNUSED,
>> - bool withTap
>> ATTRIBUTE_UNUSED,
>> int vnet_hdr ATTRIBUTE_UNUSED,
>> const unsigned char *vmuuid
>> ATTRIBUTE_UNUSED,
>> virNetDevVPortProfilePtr
>> virtPortProfile ATTRIBUTE_UNUSED,
>> char **res_ifname
>> ATTRIBUTE_UNUSED,
>> virNetDevVPortProfileOp
>> vmop ATTRIBUTE_UNUSED,
>> char *stateDir
>> ATTRIBUTE_UNUSED,
>> - virNetDevBandwidthPtr
>> bandwidth ATTRIBUTE_UNUSED)
>> + virNetDevBandwidthPtr
>> bandwidth ATTRIBUTE_UNUSED,
>> + unsigned int flags)
>> {
>> + virCheckFlags(0, NULL);
>
> The flag check could be fixed not to report in such cases, but it's
> easier just to check the flags for now. But it should be:
>
> virCheckFlags(0, -1);
>
>> virReportSystemError(ENOSYS, "%s",
>> _("Cannot create macvlan devices on this
>> platform"));
>> return -1;
>> diff --git a/src/util/virnetdevmacvlan.h b/src/util/virnetdevmacvlan.h
>> index 9b15a31..e92da4a 100644
>> --- a/src/util/virnetdevmacvlan.h
>> +++ b/src/util/virnetdevmacvlan.h
>> @@ -40,6 +40,12 @@ typedef enum {
>> } virNetDevMacVLanMode;
>> VIR_ENUM_DECL(virNetDevMacVLanMode)
>>
>> +typedef enum {
>> + VIR_NETDEV_MACVLAN_CREATE_NONE = 0,
>> + /* Create with a tap device */
>> + VIR_NETDEV_MACVLAN_CREATE_WITH_TAP = 1 << 0,
>
> You aligned only one value. Unless you object to it, I'll align them
> together without too many whitespaces.
>
> Other than that, it looks fine, ACK after 1.2.8, I'll push it with the
> changes mentioned after the release if you're OK with that.
Yep, I'm fine with the changes you've mentioned. Thanks Martin!
>
> Martin
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