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-rw-r--r--hw/s390-virtio-bus.c12
-rw-r--r--hw/s390-virtio-bus.h1
-rw-r--r--hw/syborg_virtio.c13
-rw-r--r--hw/virtio-balloon.c4
-rw-r--r--hw/virtio-blk.c6
-rw-r--r--hw/virtio-blk.h8
-rw-r--r--hw/virtio-console.c4
-rw-r--r--hw/virtio-net.c39
-rw-r--r--hw/virtio-net.h20
-rw-r--r--hw/virtio-pci.c25
-rw-r--r--hw/virtio.c2
-rw-r--r--hw/virtio.h7
12 files changed, 91 insertions, 50 deletions
diff --git a/hw/s390-virtio-bus.c b/hw/s390-virtio-bus.c
index 6c0da11f73..980e7ebbe8 100644
--- a/hw/s390-virtio-bus.c
+++ b/hw/s390-virtio-bus.c
@@ -101,6 +101,7 @@ static int s390_virtio_device_init(VirtIOS390Device *dev, VirtIODevice *vdev)
     bus->dev_offs += dev_len;
 
     virtio_bind_device(vdev, &virtio_s390_bindings, dev);
+    dev->host_features = vdev->get_features(vdev, dev->host_features);
     s390_virtio_device_sync(dev);
 
     return 0;
@@ -222,9 +223,7 @@ static void s390_virtio_device_sync(VirtIOS390Device *dev)
     cur_offs += num_vq * VIRTIO_VQCONFIG_LEN;
 
     /* Sync feature bitmap */
-    if (dev->vdev->get_features) {
-        stl_phys(cur_offs, dev->vdev->get_features(dev->vdev));
-    }
+    stl_phys(cur_offs, dev->host_features);
 
     dev->feat_offs = cur_offs + dev->feat_len;
     cur_offs += dev->feat_len * 2;
@@ -310,10 +309,17 @@ static void virtio_s390_notify(void *opaque, uint16_t vector)
     kvm_s390_virtio_irq(s390_cpu_addr2state(0), 0, token);
 }
 
+static unsigned virtio_s390_get_features(void *opaque)
+{
+    VirtIOS390Device *dev = (VirtIOS390Device*)opaque;
+    return dev->host_features;
+}
+
 /**************** S390 Virtio Bus Device Descriptions *******************/
 
 static const VirtIOBindings virtio_s390_bindings = {
     .notify = virtio_s390_notify,
+    .get_features = virtio_s390_get_features,
 };
 
 static VirtIOS390DeviceInfo s390_virtio_net = {
diff --git a/hw/s390-virtio-bus.h b/hw/s390-virtio-bus.h
index ef3671421a..8ae206563e 100644
--- a/hw/s390-virtio-bus.h
+++ b/hw/s390-virtio-bus.h
@@ -40,6 +40,7 @@ typedef struct VirtIOS390Device {
     VirtIODevice *vdev;
     DriveInfo *dinfo;
     NICConf nic;
+    uint32_t host_features;
 } VirtIOS390Device;
 
 typedef struct VirtIOS390Bus {
diff --git a/hw/syborg_virtio.c b/hw/syborg_virtio.c
index fe6fc23ecd..65239a0572 100644
--- a/hw/syborg_virtio.c
+++ b/hw/syborg_virtio.c
@@ -25,6 +25,7 @@
 #include "syborg.h"
 #include "sysbus.h"
 #include "virtio.h"
+#include "virtio-net.h"
 #include "sysemu.h"
 
 //#define DEBUG_SYBORG_VIRTIO
@@ -66,6 +67,7 @@ typedef struct {
     uint32_t int_enable;
     uint32_t id;
     NICConf nic;
+    uint32_t host_features;
 } SyborgVirtIOProxy;
 
 static uint32_t syborg_virtio_readl(void *opaque, target_phys_addr_t offset)
@@ -86,8 +88,7 @@ static uint32_t syborg_virtio_readl(void *opaque, target_phys_addr_t offset)
         ret = s->id;
         break;
     case SYBORG_VIRTIO_HOST_FEATURES:
-        ret = vdev->get_features(vdev);
-        ret |= vdev->binding->get_features(s);
+        ret = s->host_features;
         break;
     case SYBORG_VIRTIO_GUEST_FEATURES:
         ret = vdev->guest_features;
@@ -244,9 +245,8 @@ static void syborg_virtio_update_irq(void *opaque, uint16_t vector)
 
 static unsigned syborg_virtio_get_features(void *opaque)
 {
-    unsigned ret = 0;
-    ret |= (1 << VIRTIO_F_NOTIFY_ON_EMPTY);
-    return ret;
+    SyborgVirtIOProxy *proxy = opaque;
+    return proxy->host_features;
 }
 
 static VirtIOBindings syborg_virtio_bindings = {
@@ -272,6 +272,8 @@ static int syborg_virtio_init(SyborgVirtIOProxy *proxy, VirtIODevice *vdev)
     qemu_register_reset(virtio_reset, vdev);
 
     virtio_bind_device(vdev, &syborg_virtio_bindings, proxy);
+    proxy->host_features |= (0x1 << VIRTIO_F_NOTIFY_ON_EMPTY);
+    proxy->host_features = vdev->get_features(vdev, proxy->host_features);
     return 0;
 }
 
@@ -292,6 +294,7 @@ static SysBusDeviceInfo syborg_virtio_net_info = {
     .qdev.size  = sizeof(SyborgVirtIOProxy),
     .qdev.props = (Property[]) {
         DEFINE_NIC_PROPERTIES(SyborgVirtIOProxy, nic),
+        DEFINE_VIRTIO_NET_FEATURES(SyborgVirtIOProxy, host_features),
         DEFINE_PROP_END_OF_LIST(),
     }
 };
diff --git a/hw/virtio-balloon.c b/hw/virtio-balloon.c
index cfd3b413ff..e17880ff7c 100644
--- a/hw/virtio-balloon.c
+++ b/hw/virtio-balloon.c
@@ -124,9 +124,9 @@ static void virtio_balloon_set_config(VirtIODevice *vdev,
     dev->actual = config.actual;
 }
 
-static uint32_t virtio_balloon_get_features(VirtIODevice *vdev)
+static uint32_t virtio_balloon_get_features(VirtIODevice *vdev, uint32_t f)
 {
-    return 0;
+    return f;
 }
 
 static ram_addr_t virtio_balloon_to_target(void *opaque, ram_addr_t target)
diff --git a/hw/virtio-blk.c b/hw/virtio-blk.c
index a2f063974a..cb1ae1f953 100644
--- a/hw/virtio-blk.c
+++ b/hw/virtio-blk.c
@@ -432,19 +432,15 @@ static void virtio_blk_update_config(VirtIODevice *vdev, uint8_t *config)
     memcpy(config, &blkcfg, s->config_size);
 }
 
-static uint32_t virtio_blk_get_features(VirtIODevice *vdev)
+static uint32_t virtio_blk_get_features(VirtIODevice *vdev, uint32_t features)
 {
     VirtIOBlock *s = to_virtio_blk(vdev);
-    uint32_t features = 0;
 
     features |= (1 << VIRTIO_BLK_F_SEG_MAX);
     features |= (1 << VIRTIO_BLK_F_GEOMETRY);
 
     if (bdrv_enable_write_cache(s->bs))
         features |= (1 << VIRTIO_BLK_F_WCACHE);
-#ifdef __linux__
-    features |= (1 << VIRTIO_BLK_F_SCSI);
-#endif
     if (strcmp(s->serial_str, "0"))
         features |= 1 << VIRTIO_BLK_F_IDENTIFY;
     
diff --git a/hw/virtio-blk.h b/hw/virtio-blk.h
index 23ad74caec..c28f776c2e 100644
--- a/hw/virtio-blk.h
+++ b/hw/virtio-blk.h
@@ -92,4 +92,12 @@ struct virtio_scsi_inhdr
     uint32_t residual;
 };
 
+#ifdef __linux__
+#define DEFINE_VIRTIO_BLK_FEATURES(_state, _field) \
+        DEFINE_VIRTIO_COMMON_FEATURES(_state, _field), \
+        DEFINE_PROP_BIT("scsi", _state, _field, VIRTIO_BLK_F_SCSI, true)
+#else
+#define DEFINE_VIRTIO_BLK_FEATURES(_state, _field) \
+        DEFINE_VIRTIO_COMMON_FEATURES(_state, _field)
+#endif
 #endif
diff --git a/hw/virtio-console.c b/hw/virtio-console.c
index 57f8f89afa..4f18ef29cb 100644
--- a/hw/virtio-console.c
+++ b/hw/virtio-console.c
@@ -51,9 +51,9 @@ static void virtio_console_handle_input(VirtIODevice *vdev, VirtQueue *vq)
 {
 }
 
-static uint32_t virtio_console_get_features(VirtIODevice *vdev)
+static uint32_t virtio_console_get_features(VirtIODevice *vdev, uint32_t f)
 {
-    return 0;
+    return f;
 }
 
 static int vcon_can_read(void *opaque)
diff --git a/hw/virtio-net.c b/hw/virtio-net.c
index ab20a33e21..c2a389ffb5 100644
--- a/hw/virtio-net.c
+++ b/hw/virtio-net.c
@@ -147,34 +147,27 @@ static int peer_has_ufo(VirtIONet *n)
     return n->has_ufo;
 }
 
-static uint32_t virtio_net_get_features(VirtIODevice *vdev)
+static uint32_t virtio_net_get_features(VirtIODevice *vdev, uint32_t features)
 {
     VirtIONet *n = to_virtio_net(vdev);
-    uint32_t features = (1 << VIRTIO_NET_F_MAC) |
-                        (1 << VIRTIO_NET_F_MRG_RXBUF) |
-                        (1 << VIRTIO_NET_F_STATUS) |
-                        (1 << VIRTIO_NET_F_CTRL_VQ) |
-                        (1 << VIRTIO_NET_F_CTRL_RX) |
-                        (1 << VIRTIO_NET_F_CTRL_VLAN) |
-                        (1 << VIRTIO_NET_F_CTRL_RX_EXTRA);
 
     if (peer_has_vnet_hdr(n)) {
         tap_using_vnet_hdr(n->nic->nc.peer, 1);
+    } else {
+        features &= ~(0x1 << VIRTIO_NET_F_CSUM);
+        features &= ~(0x1 << VIRTIO_NET_F_HOST_TSO4);
+        features &= ~(0x1 << VIRTIO_NET_F_HOST_TSO6);
+        features &= ~(0x1 << VIRTIO_NET_F_HOST_ECN);
+
+        features &= ~(0x1 << VIRTIO_NET_F_GUEST_CSUM);
+        features &= ~(0x1 << VIRTIO_NET_F_GUEST_TSO4);
+        features &= ~(0x1 << VIRTIO_NET_F_GUEST_TSO6);
+        features &= ~(0x1 << VIRTIO_NET_F_GUEST_ECN);
+    }
 
-        features |= (1 << VIRTIO_NET_F_CSUM);
-        features |= (1 << VIRTIO_NET_F_HOST_TSO4);
-        features |= (1 << VIRTIO_NET_F_HOST_TSO6);
-        features |= (1 << VIRTIO_NET_F_HOST_ECN);
-
-        features |= (1 << VIRTIO_NET_F_GUEST_CSUM);
-        features |= (1 << VIRTIO_NET_F_GUEST_TSO4);
-        features |= (1 << VIRTIO_NET_F_GUEST_TSO6);
-        features |= (1 << VIRTIO_NET_F_GUEST_ECN);
-
-        if (peer_has_ufo(n)) {
-            features |= (1 << VIRTIO_NET_F_GUEST_UFO);
-            features |= (1 << VIRTIO_NET_F_HOST_UFO);
-        }
+    if (!peer_has_vnet_hdr(n) || !peer_has_ufo(n)) {
+        features &= ~(0x1 << VIRTIO_NET_F_GUEST_UFO);
+        features &= ~(0x1 << VIRTIO_NET_F_HOST_UFO);
     }
 
     return features;
@@ -192,7 +185,7 @@ static uint32_t virtio_net_bad_features(VirtIODevice *vdev)
     features |= (1 << VIRTIO_NET_F_HOST_TSO6);
     features |= (1 << VIRTIO_NET_F_HOST_ECN);
 
-    return features & virtio_net_get_features(vdev);
+    return features;
 }
 
 static void virtio_net_set_features(VirtIODevice *vdev, uint32_t features)
diff --git a/hw/virtio-net.h b/hw/virtio-net.h
index 2085181673..9130d75c93 100644
--- a/hw/virtio-net.h
+++ b/hw/virtio-net.h
@@ -153,4 +153,24 @@ struct virtio_net_ctrl_mac {
  #define VIRTIO_NET_CTRL_VLAN_ADD             0
  #define VIRTIO_NET_CTRL_VLAN_DEL             1
 
+#define DEFINE_VIRTIO_NET_FEATURES(_state, _field) \
+        DEFINE_VIRTIO_COMMON_FEATURES(_state, _field), \
+        DEFINE_PROP_BIT("csum", _state, _field, VIRTIO_NET_F_CSUM, true), \
+        DEFINE_PROP_BIT("guest_csum", _state, _field, VIRTIO_NET_F_GUEST_CSUM, true), \
+        DEFINE_PROP_BIT("mac", _state, _field, VIRTIO_NET_F_MAC, true), \
+        DEFINE_PROP_BIT("gso", _state, _field, VIRTIO_NET_F_GSO, true), \
+        DEFINE_PROP_BIT("guest_tso4", _state, _field, VIRTIO_NET_F_GUEST_TSO4, true), \
+        DEFINE_PROP_BIT("guest_tso6", _state, _field, VIRTIO_NET_F_GUEST_TSO6, true), \
+        DEFINE_PROP_BIT("guest_ecn", _state, _field, VIRTIO_NET_F_GUEST_ECN, true), \
+        DEFINE_PROP_BIT("guest_ufo", _state, _field, VIRTIO_NET_F_GUEST_UFO, true), \
+        DEFINE_PROP_BIT("host_tso4", _state, _field, VIRTIO_NET_F_HOST_TSO4, true), \
+        DEFINE_PROP_BIT("host_tso6", _state, _field, VIRTIO_NET_F_HOST_TSO6, true), \
+        DEFINE_PROP_BIT("host_ecn", _state, _field, VIRTIO_NET_F_HOST_ECN, true), \
+        DEFINE_PROP_BIT("host_ufo", _state, _field, VIRTIO_NET_F_HOST_UFO, true), \
+        DEFINE_PROP_BIT("mrg_rxbuf", _state, _field, VIRTIO_NET_F_MRG_RXBUF, true), \
+        DEFINE_PROP_BIT("status", _state, _field, VIRTIO_NET_F_STATUS, true), \
+        DEFINE_PROP_BIT("ctrl_vq", _state, _field, VIRTIO_NET_F_CTRL_VQ, true), \
+        DEFINE_PROP_BIT("ctrl_rx", _state, _field, VIRTIO_NET_F_CTRL_RX, true), \
+        DEFINE_PROP_BIT("ctrl_vlan", _state, _field, VIRTIO_NET_F_CTRL_VLAN, true), \
+        DEFINE_PROP_BIT("ctrl_rx_extra", _state, _field, VIRTIO_NET_F_CTRL_RX_EXTRA, true)
 #endif
diff --git a/hw/virtio-pci.c b/hw/virtio-pci.c
index 4e1d5e1963..6d0f9dd37a 100644
--- a/hw/virtio-pci.c
+++ b/hw/virtio-pci.c
@@ -16,6 +16,8 @@
 #include <inttypes.h>
 
 #include "virtio.h"
+#include "virtio-blk.h"
+#include "virtio-net.h"
 #include "pci.h"
 #include "sysemu.h"
 #include "msix.h"
@@ -92,6 +94,7 @@ typedef struct {
     uint32_t nvectors;
     DriveInfo *dinfo;
     NICConf nic;
+    uint32_t host_features;
 } VirtIOPCIProxy;
 
 /* virtio device */
@@ -175,7 +178,7 @@ static void virtio_ioport_write(void *opaque, uint32_t addr, uint32_t val)
 	/* Guest does not negotiate properly?  We have to assume nothing. */
 	if (val & (1 << VIRTIO_F_BAD_FEATURE)) {
 	    if (vdev->bad_features)
-		val = vdev->bad_features(vdev);
+		val = proxy->host_features & vdev->bad_features(vdev);
 	    else
 		val = 0;
 	}
@@ -235,8 +238,7 @@ static uint32_t virtio_ioport_read(VirtIOPCIProxy *proxy, uint32_t addr)
 
     switch (addr) {
     case VIRTIO_PCI_HOST_FEATURES:
-        ret = vdev->get_features(vdev);
-        ret |= vdev->binding->get_features(proxy);
+        ret = proxy->host_features;
         break;
     case VIRTIO_PCI_GUEST_FEATURES:
         ret = vdev->guest_features;
@@ -382,11 +384,8 @@ static void virtio_write_config(PCIDevice *pci_dev, uint32_t address,
 
 static unsigned virtio_pci_get_features(void *opaque)
 {
-    unsigned ret = 0;
-    ret |= (1 << VIRTIO_F_NOTIFY_ON_EMPTY);
-    ret |= (1 << VIRTIO_RING_F_INDIRECT_DESC);
-    ret |= (1 << VIRTIO_F_BAD_FEATURE);
-    return ret;
+    VirtIOPCIProxy *proxy = opaque;
+    return proxy->host_features;
 }
 
 static const VirtIOBindings virtio_pci_bindings = {
@@ -442,6 +441,9 @@ static void virtio_init_pci(VirtIOPCIProxy *proxy, VirtIODevice *vdev,
                            virtio_map);
 
     virtio_bind_device(vdev, &virtio_pci_bindings, proxy);
+    proxy->host_features |= 0x1 << VIRTIO_F_NOTIFY_ON_EMPTY;
+    proxy->host_features |= 0x1 << VIRTIO_F_BAD_FEATURE;
+    proxy->host_features = vdev->get_features(vdev, proxy->host_features);
 }
 
 static int virtio_blk_init_pci(PCIDevice *pci_dev)
@@ -553,6 +555,7 @@ static PCIDeviceInfo virtio_info[] = {
             DEFINE_PROP_HEX32("class", VirtIOPCIProxy, class_code, 0),
             DEFINE_PROP_DRIVE("drive", VirtIOPCIProxy, dinfo),
             DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2),
+            DEFINE_VIRTIO_BLK_FEATURES(VirtIOPCIProxy, host_features),
             DEFINE_PROP_END_OF_LIST(),
         },
         .qdev.reset = virtio_pci_reset,
@@ -564,6 +567,7 @@ static PCIDeviceInfo virtio_info[] = {
         .romfile    = "pxe-virtio.bin",
         .qdev.props = (Property[]) {
             DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 3),
+            DEFINE_VIRTIO_NET_FEATURES(VirtIOPCIProxy, host_features),
             DEFINE_NIC_PROPERTIES(VirtIOPCIProxy, nic),
             DEFINE_PROP_END_OF_LIST(),
         },
@@ -575,6 +579,7 @@ static PCIDeviceInfo virtio_info[] = {
         .exit      = virtio_exit_pci,
         .qdev.props = (Property[]) {
             DEFINE_PROP_HEX32("class", VirtIOPCIProxy, class_code, 0),
+            DEFINE_VIRTIO_COMMON_FEATURES(VirtIOPCIProxy, host_features),
             DEFINE_PROP_END_OF_LIST(),
         },
         .qdev.reset = virtio_pci_reset,
@@ -583,6 +588,10 @@ static PCIDeviceInfo virtio_info[] = {
         .qdev.size = sizeof(VirtIOPCIProxy),
         .init      = virtio_balloon_init_pci,
         .exit      = virtio_exit_pci,
+        .qdev.props = (Property[]) {
+            DEFINE_VIRTIO_COMMON_FEATURES(VirtIOPCIProxy, host_features),
+            DEFINE_PROP_END_OF_LIST(),
+        },
         .qdev.reset = virtio_pci_reset,
     },{
         /* end of list */
diff --git a/hw/virtio.c b/hw/virtio.c
index c25a5f12bb..fa7184ab95 100644
--- a/hw/virtio.c
+++ b/hw/virtio.c
@@ -652,7 +652,7 @@ int virtio_load(VirtIODevice *vdev, QEMUFile *f)
 {
     int num, i, ret;
     uint32_t features;
-    uint32_t supported_features = vdev->get_features(vdev) |
+    uint32_t supported_features =
         vdev->binding->get_features(vdev->binding_opaque);
 
     if (vdev->binding->load_config) {
diff --git a/hw/virtio.h b/hw/virtio.h
index 85ef171248..3994cc973f 100644
--- a/hw/virtio.h
+++ b/hw/virtio.h
@@ -105,7 +105,7 @@ struct VirtIODevice
     void *config;
     uint16_t config_vector;
     int nvectors;
-    uint32_t (*get_features)(VirtIODevice *vdev);
+    uint32_t (*get_features)(VirtIODevice *vdev, uint32_t requested_features);
     uint32_t (*bad_features)(VirtIODevice *vdev);
     void (*set_features)(VirtIODevice *vdev, uint32_t val);
     void (*get_config)(VirtIODevice *vdev, uint8_t *config);
@@ -176,4 +176,9 @@ VirtIODevice *virtio_balloon_init(DeviceState *dev);
 
 void virtio_net_exit(VirtIODevice *vdev);
 
+#define DEFINE_VIRTIO_COMMON_FEATURES(_state, _field) \
+	DEFINE_PROP_BIT("indirect_desc", _state, _field, \
+			VIRTIO_RING_F_INDIRECT_DESC, true)
+
+
 #endif