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Networking: Add vhost fd support

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Add vhost fd support. This is needed in the case of multi queue.

Signed-off-by: Manohar Castelino <manohar.r.castelino@intel.com>
This commit is contained in:
Manohar Castelino 2017-11-02 12:58:32 -07:00
parent 14316ce0b1
commit 7e5614b8a7
1 changed files with 11 additions and 1 deletions
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12
qemu.go
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@ -425,7 +425,8 @@ type NetDevice struct {
// FDs represents the list of already existing file descriptors to be used.
// This is mostly useful for mq support.
FDs []*os.File
FDs []*os.File
VhostFDs []*os.File
// VHost enables virtio device emulation from the host kernel instead of from qemu.
VHost bool
@ -511,8 +512,17 @@ func (netdev NetDevice) QemuNetdevParams(config *Config) []string {
netdevParams = append(netdevParams, netdev.Type.QemuNetdevParam())
netdevParams = append(netdevParams, fmt.Sprintf(",id=%s", netdev.ID))
if netdev.VHost == true {
netdevParams = append(netdevParams, ",vhost=on")
if len(netdev.VhostFDs) > 0 {
var fdParams []string
qemuFDs := config.appendFDs(netdev.VhostFDs)
for _, fd := range qemuFDs {
fdParams = append(fdParams, fmt.Sprintf("%d", fd))
}
netdevParams = append(netdevParams, fmt.Sprintf(",vhostfds=%s", strings.Join(fdParams, ":")))
}
}
if len(netdev.FDs) > 0 {