[libvirt PATCH 4/5] ch: Introduce version based cap for network support

This capability checks if ch can receive multiple fds along with net-add api. This capability is required to enable multiple queues for domain/guest interfaces. Signed-off-by: Praveen K Paladugu <prapal(a)linux.microsoft.com&gt; --- src/ch/ch_capabilities.c | 9 +++++++++ src/ch/ch_capabilities.h | 1 + 2 files changed, 10 insertions(+) diff --git a/src/ch/ch_capabilities.c b/src/ch/ch_capabilities.c index b10485820c..b9e62d2d5b 100644 --- a/src/ch/ch_capabilities.c +++ b/src/ch/ch_capabilities.c @@ -50,6 +50,15 @@ virCHCapsInitCHVersionCaps(int version) if (version >= 18000000) virCHCapsSet(chCaps, CH_SERIAL_CONSOLE_IN_PARALLEL); + /* Starting Version 22, add-net api can accept multiple FDs in the request + * This is required to be able to configure queues for virtio-net devices + * from libvirt. + * This capability will be used to gate networking support for ch guests. + * https://github.com/cloud-hypervisor/cloud-hypervisor/releases/tag/v22.0 + */ + if (version >= 22000000) + virCHCapsSet(chCaps, CH_MULTIFD_IN_ADDNET); + return g_steal_pointer(&chCaps); } diff --git a/src/ch/ch_capabilities.h b/src/ch/ch_capabilities.h index 703a6dbfe2..ffb8881a11 100644 --- a/src/ch/ch_capabilities.h +++ b/src/ch/ch_capabilities.h @@ -26,6 +26,7 @@ typedef enum { /* 0 */ CH_KERNEL_API_DEPRCATED, /* Use `payload` in place of `kernel` api */ CH_SERIAL_CONSOLE_IN_PARALLEL, /* Serial and Console ports can work in parallel */ + CH_MULTIFD_IN_ADDNET, /* Cloud-hypervisor can accept multiple FDs in add-net api */ CH_CAPS_LAST /* this must always be the last item */ } virCHCapsFlags; -- 2.41.0