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Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost

Browse Source 
Pull virtio updates from Michael Tsirkin:

 - Some bug fixes

 - The new vdpa subsystem with two first drivers

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
  virtio-balloon: Revert "virtio-balloon: Switch back to OOM handler for VIRTIO_BALLOON_F_DEFLATE_ON_OOM"
  vdpa: move to drivers/vdpa
  virtio: Intel IFC VF driver for VDPA
  vdpasim: vDPA device simulator
  vhost: introduce vDPA-based backend
  virtio: introduce a vDPA based transport
  vDPA: introduce vDPA bus
  vringh: IOTLB support
  vhost: factor out IOTLB
  vhost: allow per device message handler
  vhost: refine vhost and vringh kconfig
  virtio-balloon: Switch back to OOM handler for VIRTIO_BALLOON_F_DEFLATE_ON_OOM
  virtio-net: Introduce hash report feature
  virtio-net: Introduce RSS receive steering feature
  virtio-net: Introduce extended RSC feature
  tools/virtio: option to build an out of tree module
This commit is contained in:
Linus Torvalds
2020-04-08 10:51:53 -07:00
parent ae46d2aa6a 835a6a649d
commit 9bb715260e
40 changed files with 4310 additions and 249 deletions
Download Patch File Download Diff File Expand all files Collapse all files

24
include/uapi/linux/vhost.h
View File

@@ -116,4 +116,28 @@
#define VHOST_VSOCK_SET_GUEST_CID _IOW(VHOST_VIRTIO, 0x60, __u64)
#define VHOST_VSOCK_SET_RUNNING _IOW(VHOST_VIRTIO, 0x61, int)
/* VHOST_VDPA specific defines */
/* Get the device id. The device ids follow the same definition of
* the device id defined in virtio-spec.
*/
#define VHOST_VDPA_GET_DEVICE_ID _IOR(VHOST_VIRTIO, 0x70, __u32)
/* Get and set the status. The status bits follow the same definition
* of the device status defined in virtio-spec.
*/
#define VHOST_VDPA_GET_STATUS _IOR(VHOST_VIRTIO, 0x71, __u8)
#define VHOST_VDPA_SET_STATUS _IOW(VHOST_VIRTIO, 0x72, __u8)
/* Get and set the device config. The device config follows the same
* definition of the device config defined in virtio-spec.
*/
#define VHOST_VDPA_GET_CONFIG _IOR(VHOST_VIRTIO, 0x73, \
struct vhost_vdpa_config)
#define VHOST_VDPA_SET_CONFIG _IOW(VHOST_VIRTIO, 0x74, \
struct vhost_vdpa_config)
/* Enable/disable the ring. */
#define VHOST_VDPA_SET_VRING_ENABLE _IOW(VHOST_VIRTIO, 0x75, \
struct vhost_vring_state)
/* Get the max ring size. */
#define VHOST_VDPA_GET_VRING_NUM _IOR(VHOST_VIRTIO, 0x76, __u16)
#endif

8
include/uapi/linux/vhost_types.h
View File

@@ -119,6 +119,14 @@ struct vhost_scsi_target {
unsigned short reserved;
};
/* VHOST_VDPA specific definitions */
struct vhost_vdpa_config {
__u32 off;
__u32 len;
__u8 buf[0];
};
/* Feature bits */
/* Log all write descriptors. Can be changed while device is active. */
#define VHOST_F_LOG_ALL 26

102
include/uapi/linux/virtio_net.h
View File

@@ -57,6 +57,9 @@
* Steering */
#define VIRTIO_NET_F_CTRL_MAC_ADDR 23 /* Set MAC address */
#define VIRTIO_NET_F_HASH_REPORT 57 /* Supports hash report */
#define VIRTIO_NET_F_RSS 60 /* Supports RSS RX steering */
#define VIRTIO_NET_F_RSC_EXT 61 /* extended coalescing info */
#define VIRTIO_NET_F_STANDBY 62 /* Act as standby for another device
* with the same MAC.
*/
@@ -69,6 +72,17 @@
#define VIRTIO_NET_S_LINK_UP 1 /* Link is up */
#define VIRTIO_NET_S_ANNOUNCE 2 /* Announcement is needed */
/* supported/enabled hash types */
#define VIRTIO_NET_RSS_HASH_TYPE_IPv4 (1 << 0)
#define VIRTIO_NET_RSS_HASH_TYPE_TCPv4 (1 << 1)
#define VIRTIO_NET_RSS_HASH_TYPE_UDPv4 (1 << 2)
#define VIRTIO_NET_RSS_HASH_TYPE_IPv6 (1 << 3)
#define VIRTIO_NET_RSS_HASH_TYPE_TCPv6 (1 << 4)
#define VIRTIO_NET_RSS_HASH_TYPE_UDPv6 (1 << 5)
#define VIRTIO_NET_RSS_HASH_TYPE_IP_EX (1 << 6)
#define VIRTIO_NET_RSS_HASH_TYPE_TCP_EX (1 << 7)
#define VIRTIO_NET_RSS_HASH_TYPE_UDP_EX (1 << 8)
struct virtio_net_config {
/* The config defining mac address (if VIRTIO_NET_F_MAC) */
__u8 mac[ETH_ALEN];
@@ -92,6 +106,12 @@ struct virtio_net_config {
* Any other value stands for unknown.
*/
__u8 duplex;
/* maximum size of RSS key */
__u8 rss_max_key_size;
/* maximum number of indirection table entries */
__le16 rss_max_indirection_table_length;
/* bitmask of supported VIRTIO_NET_RSS_HASH_ types */
__le32 supported_hash_types;
} __attribute__((packed));
/*
@@ -104,6 +124,7 @@ struct virtio_net_config {
struct virtio_net_hdr_v1 {
#define VIRTIO_NET_HDR_F_NEEDS_CSUM 1 /* Use csum_start, csum_offset */
#define VIRTIO_NET_HDR_F_DATA_VALID 2 /* Csum is valid */
#define VIRTIO_NET_HDR_F_RSC_INFO 4 /* rsc info in csum_ fields */
__u8 flags;
#define VIRTIO_NET_HDR_GSO_NONE 0 /* Not a GSO frame */
#define VIRTIO_NET_HDR_GSO_TCPV4 1 /* GSO frame, IPv4 TCP (TSO) */
@@ -113,11 +134,46 @@ struct virtio_net_hdr_v1 {
__u8 gso_type;
__virtio16 hdr_len; /* Ethernet + IP + tcp/udp hdrs */
__virtio16 gso_size; /* Bytes to append to hdr_len per frame */
__virtio16 csum_start; /* Position to start checksumming from */
__virtio16 csum_offset; /* Offset after that to place checksum */
union {
struct {
__virtio16 csum_start;
__virtio16 csum_offset;
};
/* Checksum calculation */
struct {
/* Position to start checksumming from */
__virtio16 start;
/* Offset after that to place checksum */
__virtio16 offset;
} csum;
/* Receive Segment Coalescing */
struct {
/* Number of coalesced segments */
__le16 segments;
/* Number of duplicated acks */
__le16 dup_acks;
} rsc;
};
__virtio16 num_buffers; /* Number of merged rx buffers */
};
struct virtio_net_hdr_v1_hash {
struct virtio_net_hdr_v1 hdr;
__le32 hash_value;
#define VIRTIO_NET_HASH_REPORT_NONE 0
#define VIRTIO_NET_HASH_REPORT_IPv4 1
#define VIRTIO_NET_HASH_REPORT_TCPv4 2
#define VIRTIO_NET_HASH_REPORT_UDPv4 3
#define VIRTIO_NET_HASH_REPORT_IPv6 4
#define VIRTIO_NET_HASH_REPORT_TCPv6 5
#define VIRTIO_NET_HASH_REPORT_UDPv6 6
#define VIRTIO_NET_HASH_REPORT_IPv6_EX 7
#define VIRTIO_NET_HASH_REPORT_TCPv6_EX 8
#define VIRTIO_NET_HASH_REPORT_UDPv6_EX 9
__le16 hash_report;
__le16 padding;
};
#ifndef VIRTIO_NET_NO_LEGACY
/* This header comes first in the scatter-gather list.
* For legacy virtio, if VIRTIO_F_ANY_LAYOUT is not negotiated, it must
@@ -228,7 +284,9 @@ struct virtio_net_ctrl_mac {
/*
* Control Receive Flow Steering
*
*/
#define VIRTIO_NET_CTRL_MQ 4
/*
* The command VIRTIO_NET_CTRL_MQ_VQ_PAIRS_SET
* enables Receive Flow Steering, specifying the number of the transmit and
* receive queues that will be used. After the command is consumed and acked by
@@ -241,11 +299,47 @@ struct virtio_net_ctrl_mq {
__virtio16 virtqueue_pairs;
};
#define VIRTIO_NET_CTRL_MQ 4
#define VIRTIO_NET_CTRL_MQ_VQ_PAIRS_SET 0
#define VIRTIO_NET_CTRL_MQ_VQ_PAIRS_MIN 1
#define VIRTIO_NET_CTRL_MQ_VQ_PAIRS_MAX 0x8000
/*
* The command VIRTIO_NET_CTRL_MQ_RSS_CONFIG has the same effect as
* VIRTIO_NET_CTRL_MQ_VQ_PAIRS_SET does and additionally configures
* the receive steering to use a hash calculated for incoming packet
* to decide on receive virtqueue to place the packet. The command
* also provides parameters to calculate a hash and receive virtqueue.
*/
struct virtio_net_rss_config {
__le32 hash_types;
__le16 indirection_table_mask;
__le16 unclassified_queue;
__le16 indirection_table[1/* + indirection_table_mask */];
__le16 max_tx_vq;
__u8 hash_key_length;
__u8 hash_key_data[/* hash_key_length */];
};
#define VIRTIO_NET_CTRL_MQ_RSS_CONFIG 1
/*
* The command VIRTIO_NET_CTRL_MQ_HASH_CONFIG requests the device
* to include in the virtio header of the packet the value of the
* calculated hash and the report type of hash. It also provides
* parameters for hash calculation. The command requires feature
* VIRTIO_NET_F_HASH_REPORT to be negotiated to extend the
* layout of virtio header as defined in virtio_net_hdr_v1_hash.
*/
struct virtio_net_hash_config {
__le32 hash_types;
/* for compatibility with virtio_net_rss_config */
__le16 reserved[4];
__u8 hash_key_length;
__u8 hash_key_data[/* hash_key_length */];
};
#define VIRTIO_NET_CTRL_MQ_HASH_CONFIG 2
/*
* Control network offloads
*