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Subject: [PATCH v1 08/37] vhost-pci-slave/msg: VHOST_USER_SET_FEATURES
Store the feature bits that have been negotiated between the master device and driver. The feature bits will be negotiated with the slave driver. Signed-off-by: Wei Wang <wei.w.wang@intel.com> --- hw/virtio/vhost-pci-slave.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/hw/virtio/vhost-pci-slave.c b/hw/virtio/vhost-pci-slave.c index 4f445c2..bc6120c 100644 --- a/hw/virtio/vhost-pci-slave.c +++ b/hw/virtio/vhost-pci-slave.c @@ -50,6 +50,13 @@ static int vp_slave_get_features(CharBackend *chr_be, VhostUserMsg *msg) return vp_slave_write(chr_be, msg); } +static void vp_slave_set_features(VhostUserMsg *msg) +{ + /* Clear the protocol feature bit, which is useless for the device */ + vp_slave->feature_bits = msg->payload.u64 + & ~(1 << VHOST_USER_F_PROTOCOL_FEATURES); +} + static void vp_slave_event(void *opaque, int event) { switch (event) { @@ -98,6 +105,9 @@ static void vp_slave_read(void *opaque, const uint8_t *buf, int size) if (ret < 0) goto err_handling; break; + case VHOST_USER_SET_FEATURES: + vp_slave_set_features(&msg); + break; default: error_report("vhost-pci-slave does not support msg request = %d", msg.request); -- 2.7.4
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