net/virtio: support MTU feature

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

diff --git a/drivers/net/virtio/virtio_pci.h b/drivers/net/virtio/virtio_pci.h
index b8295a7..0362acd 100644 (file)
--- a/drivers/net/virtio/virtio_pci.h
+++ b/drivers/net/virtio/virtio_pci.h
@@ -44,8 +44,8 @@ struct virtnet_ctl;
 
 /* VirtIO PCI vendor/device ID. */
 #define VIRTIO_PCI_VENDORID     0x1AF4
-#define VIRTIO_PCI_DEVICEID_MIN 0x1000
-#define VIRTIO_PCI_DEVICEID_MAX 0x103F
+#define VIRTIO_PCI_LEGACY_DEVICEID_NET 0x1000
+#define VIRTIO_PCI_MODERN_DEVICEID_NET 0x1041
 
 /* VirtIO ABI version, this must match exactly. */
 #define VIRTIO_PCI_ABI_VERSION 0
@@ -106,6 +106,7 @@ struct virtnet_ctl;
 /* 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. */
@@ -138,6 +139,7 @@ struct virtnet_ctl;
 #define VIRTIO_RING_F_INDIRECT_DESC    28
 
 #define VIRTIO_F_VERSION_1             32
+#define VIRTIO_F_IOMMU_PLATFORM        33
 
 /*
  * Some VirtIO feature bits (currently bits 28 through 31) are
@@ -145,7 +147,7 @@ struct virtnet_ctl;
  * rest are per-device feature bits.
  */
 #define VIRTIO_TRANSPORT_F_START 28
-#define VIRTIO_TRANSPORT_F_END   32
+#define VIRTIO_TRANSPORT_F_END   34
 
 /* 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. */
@@ -159,7 +161,8 @@ struct virtnet_ctl;
 /*
  * Maximum number of virtqueues per device.
  */
-#define VIRTIO_MAX_VIRTQUEUES 8
+#define VIRTIO_MAX_VIRTQUEUE_PAIRS 8
+#define VIRTIO_MAX_VIRTQUEUES (VIRTIO_MAX_VIRTQUEUE_PAIRS * 2 + 1)
 
 /* Common configuration */
 #define VIRTIO_PCI_CAP_COMMON_CFG      1
@@ -234,6 +237,9 @@ struct virtio_pci_ops {
 
        uint16_t (*set_config_irq)(struct virtio_hw *hw, uint16_t vec);
 
+       uint16_t (*set_queue_irq)(struct virtio_hw *hw, struct virtqueue *vq,
+                       uint16_t vec);
+
        uint16_t (*get_queue_num)(struct virtio_hw *hw, uint16_t queue_id);
        int (*setup_queue)(struct virtio_hw *hw, struct virtqueue *vq);
        void (*del_queue)(struct virtio_hw *hw, struct virtqueue *vq);
@@ -244,27 +250,44 @@ struct virtio_net_config;
 
 struct virtio_hw {
        struct virtnet_ctl *cvq;
-       struct rte_pci_ioport io;
+       uint64_t    req_guest_features;
        uint64_t    guest_features;
-       uint32_t    max_tx_queues;
-       uint32_t    max_rx_queues;
+       uint32_t    max_queue_pairs;
+       uint16_t        max_mtu;
        uint16_t    vtnet_hdr_size;
        uint8_t     vlan_strip;
        uint8_t     use_msix;
-       uint8_t     started;
        uint8_t     modern;
        uint8_t     use_simple_rxtx;
+       uint8_t     port_id;
        uint8_t     mac_addr[ETHER_ADDR_LEN];
        uint32_t    notify_off_multiplier;
        uint8_t     *isr;
        uint16_t    *notify_base;
-       struct rte_pci_device *dev;
        struct virtio_pci_common_cfg *common_cfg;
        struct virtio_net_config *dev_cfg;
-       const struct virtio_pci_ops *vtpci_ops;
        void        *virtio_user_dev;
+
+       struct virtqueue **vqs;
+};
+
+
+/*
+ * While virtio_hw is stored in shared memory, this structure stores
+ * some infos that may vary in the multiple process model locally.
+ * For example, the vtpci_ops pointer.
+ */
+struct virtio_hw_internal {
+       const struct virtio_pci_ops *vtpci_ops;
+       struct rte_pci_ioport io;
 };
 
+#define VTPCI_OPS(hw)  (virtio_hw_internal[(hw)->port_id].vtpci_ops)
+#define VTPCI_IO(hw)   (&virtio_hw_internal[(hw)->port_id].io)
+
+extern struct virtio_hw_internal virtio_hw_internal[RTE_MAX_ETHPORTS];
+
+
 /*
  * This structure is just a reference to read
  * net device specific config space; it just a chodu structure
@@ -276,6 +299,7 @@ struct virtio_net_config {
        /* See VIRTIO_NET_F_STATUS and VIRTIO_NET_S_* above */
        uint16_t   status;
        uint16_t   max_virtqueue_pairs;
+       uint16_t   mtu;
 } __attribute__((packed));
 
 /*
@@ -313,6 +337,8 @@ void vtpci_read_dev_config(struct virtio_hw *, size_t, void *, int);
 
 uint8_t vtpci_isr(struct virtio_hw *);
 
-uint16_t vtpci_irq_config(struct virtio_hw *, uint16_t);
+extern const struct virtio_pci_ops legacy_ops;
+extern const struct virtio_pci_ops modern_ops;
+extern const struct virtio_pci_ops virtio_user_ops;
 
 #endif /* _VIRTIO_PCI_H_ */