net/virtio: move features definition to generic header

[dpdk.git] / drivers / net / virtio / virtio.h

diff --git a/drivers/net/virtio/virtio.h b/drivers/net/virtio/virtio.h
index e55e332..cdfee5d 100644 (file)
--- a/drivers/net/virtio/virtio.h
+++ b/drivers/net/virtio/virtio.h
@@ -8,6 +8,86 @@
 
 #include <rte_ether.h>
 
+/* The feature bitmap for virtio net */
+#define VIRTIO_NET_F_CSUM      0       /* Host handles pkts w/ partial csum */
+#define VIRTIO_NET_F_GUEST_CSUM        1       /* Guest handles pkts w/ partial csum */
+#define VIRTIO_NET_F_MTU       3       /* Initial MTU advice. */
+#define VIRTIO_NET_F_MAC       5       /* Host has given MAC address. */
+#define VIRTIO_NET_F_GUEST_TSO4        7       /* Guest can handle TSOv4 in. */
+#define VIRTIO_NET_F_GUEST_TSO6        8       /* Guest can handle TSOv6 in. */
+#define VIRTIO_NET_F_GUEST_ECN 9       /* Guest can handle TSO[6] w/ ECN in. */
+#define VIRTIO_NET_F_GUEST_UFO 10      /* Guest can handle UFO in. */
+#define VIRTIO_NET_F_HOST_TSO4 11      /* Host can handle TSOv4 in. */
+#define VIRTIO_NET_F_HOST_TSO6 12      /* Host can handle TSOv6 in. */
+#define VIRTIO_NET_F_HOST_ECN  13      /* Host can handle TSO[6] w/ ECN in. */
+#define VIRTIO_NET_F_HOST_UFO  14      /* Host can handle UFO in. */
+#define VIRTIO_NET_F_MRG_RXBUF 15      /* Host can merge receive buffers. */
+#define VIRTIO_NET_F_STATUS    16      /* virtio_net_config.status available */
+#define VIRTIO_NET_F_CTRL_VQ   17      /* Control channel available */
+#define VIRTIO_NET_F_CTRL_RX   18      /* Control channel RX mode support */
+#define VIRTIO_NET_F_CTRL_VLAN 19      /* Control channel VLAN filtering */
+#define VIRTIO_NET_F_CTRL_RX_EXTRA 20  /* Extra RX mode control support */
+#define VIRTIO_NET_F_GUEST_ANNOUNCE 21 /* Guest can announce device on the network */
+#define VIRTIO_NET_F_MQ                22      /* Device supports Receive Flow Steering */
+#define VIRTIO_NET_F_CTRL_MAC_ADDR 23  /* Set MAC address */
+
+/*
+ * Do we get callbacks when the ring is completely used,
+ * even if we've suppressed them?
+ */
+#define VIRTIO_F_NOTIFY_ON_EMPTY       24
+
+/* Can the device handle any descriptor layout? */
+#define VIRTIO_F_ANY_LAYOUT            27
+
+/* We support indirect buffer descriptors */
+#define VIRTIO_RING_F_INDIRECT_DESC    28
+
+#define VIRTIO_F_VERSION_1             32
+#define VIRTIO_F_IOMMU_PLATFORM        33
+#define VIRTIO_F_RING_PACKED           34
+
+/*
+ * Some VirtIO feature bits (currently bits 28 through 31) are
+ * reserved for the transport being used (eg. virtio_ring), the
+ * rest are per-device feature bits.
+ */
+#define VIRTIO_TRANSPORT_F_START 28
+#define VIRTIO_TRANSPORT_F_END   34
+
+/*
+ * Inorder feature indicates that all buffers are used by the device
+ * in the same order in which they have been made available.
+ */
+#define VIRTIO_F_IN_ORDER 35
+
+/*
+ * This feature indicates that memory accesses by the driver and the device
+ * are ordered in a way described by the platform.
+ */
+#define VIRTIO_F_ORDER_PLATFORM 36
+
+/*
+ * This feature indicates that the driver passes extra data (besides
+ * identifying the virtqueue) in its device notifications.
+ */
+#define VIRTIO_F_NOTIFICATION_DATA 38
+
+/* Device set linkspeed and duplex */
+#define VIRTIO_NET_F_SPEED_DUPLEX 63
+
+/*
+ * The Guest publishes the used index for which it expects an interrupt
+ * at the end of the avail ring. Host should ignore the avail->flags field
+ *
+ * The Host publishes the avail index for which it expects a kick
+ * at the end of the used ring. Guest should ignore the used->flags field.
+ */
+#define VIRTIO_RING_F_EVENT_IDX                29
+
+#define VIRTIO_NET_S_LINK_UP   1       /* Link is up */
+#define VIRTIO_NET_S_ANNOUNCE  2       /* Announcement is needed */
+
 struct virtio_hw {
        struct virtqueue **vqs;
        uint64_t guest_features;
@@ -71,4 +151,18 @@ struct virtio_hw_internal {
 extern struct virtio_hw_internal virtio_hw_internal[RTE_MAX_ETHPORTS];
 
 
+static inline int
+virtio_with_feature(struct virtio_hw *hw, uint64_t bit)
+{
+       return (hw->guest_features & (1ULL << bit)) != 0;
+}
+
+static inline int
+virtio_with_packed_queue(struct virtio_hw *hw)
+{
+       return virtio_with_feature(hw, VIRTIO_F_RING_PACKED);
+}
+
+uint64_t virtio_negotiate_features(struct virtio_hw *hw, uint64_t host_features);
+
 #endif /* _VIRTIO_H_ */