vhost: Add multi-versioning support

It also refactors the vhost code which was in one big file vhost-user.c.
Receive side code is in vhost_user_input.c and
Transmit side code is in vhost_user_output.c

Change-Id: I1b539b5008685889723e228265786a2a3e9f3a78
Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>

1 files changed, 0 insertions, 342 deletions

diff --git a/src/vnet/devices/virtio/vhost-user.h b/src/vnet/devices/virtio/vhost-user.h
deleted file mode 100644
index 105b92b72ef..00000000000
--- a/src/vnet/devices/virtio/vhost-user.h
+++ /dev/null
@@ -1,342 +0,0 @@
-/*
- * Copyright (c) 2015 Cisco and/or its affiliates.
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at:
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-#ifndef __VIRTIO_VHOST_USER_H__
-#define __VIRTIO_VHOST_USER_H__
-/* vhost-user data structures */
-
-#define VHOST_MEMORY_MAX_NREGIONS       8
-#define VHOST_USER_MSG_HDR_SZ           12
-#define VHOST_VRING_MAX_SIZE            32768
-#define VHOST_VRING_MAX_N               16	//8TX + 8RX
-#define VHOST_VRING_IDX_RX(qid)         (2*qid)
-#define VHOST_VRING_IDX_TX(qid)         (2*qid + 1)
-
-#define VHOST_USER_VRING_NOFD_MASK      0x100
-#define VIRTQ_DESC_F_NEXT               1
-#define VIRTQ_DESC_F_INDIRECT           4
-#define VHOST_USER_REPLY_MASK       (0x1 << 2)
-
-#define VHOST_USER_PROTOCOL_F_MQ   0
-#define VHOST_USER_PROTOCOL_F_LOG_SHMFD	1
-#define VHOST_VRING_F_LOG 0
-
-#define VHOST_USER_F_PROTOCOL_FEATURES  30
-#define VHOST_USER_PROTOCOL_FEATURES   ((1ULL << VHOST_USER_PROTOCOL_F_MQ) |	\
-					(1ULL << VHOST_USER_PROTOCOL_F_LOG_SHMFD))
-
-/* If multiqueue is provided by host, then we suppport it. */
-#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
-
-#define VRING_USED_F_NO_NOTIFY  1
-#define VRING_AVAIL_F_NO_INTERRUPT 1
-
-#define foreach_virtio_net_feature      \
- _ (VIRTIO_NET_F_MRG_RXBUF, 15)         \
- _ (VIRTIO_NET_F_CTRL_VQ, 17)           \
- _ (VIRTIO_NET_F_GUEST_ANNOUNCE, 21)    \
- _ (VIRTIO_NET_F_MQ, 22)                \
- _ (VHOST_F_LOG_ALL, 26)                \
- _ (VIRTIO_F_ANY_LAYOUT, 27)            \
- _ (VIRTIO_F_INDIRECT_DESC, 28)         \
- _ (VHOST_USER_F_PROTOCOL_FEATURES, 30) \
- _ (VIRTIO_F_VERSION_1, 32)
-
-
-typedef enum
-{
-#define _(f,n) FEAT_##f = (n),
-  foreach_virtio_net_feature
-#undef _
-} virtio_net_feature_t;
-
-int vhost_user_create_if (vnet_main_t * vnm, vlib_main_t * vm,
-			  const char *sock_filename, u8 is_server,
-			  u32 * sw_if_index, u64 feature_mask,
-			  u8 renumber, u32 custom_dev_instance, u8 * hwaddr);
-int vhost_user_modify_if (vnet_main_t * vnm, vlib_main_t * vm,
-			  const char *sock_filename, u8 is_server,
-			  u32 sw_if_index, u64 feature_mask,
-			  u8 renumber, u32 custom_dev_instance);
-int vhost_user_delete_if (vnet_main_t * vnm, vlib_main_t * vm,
-			  u32 sw_if_index);
-
-/* *INDENT-OFF* */
-typedef struct vhost_user_memory_region
-{
-  u64 guest_phys_addr;
-  u64 memory_size;
-  u64 userspace_addr;
-  u64 mmap_offset;
-} __attribute ((packed)) vhost_user_memory_region_t;
-
-typedef struct vhost_user_memory
-{
-  u32 nregions;
-  u32 padding;
-  vhost_user_memory_region_t regions[VHOST_MEMORY_MAX_NREGIONS];
-} __attribute ((packed)) vhost_user_memory_t;
-
-typedef struct
-{
-  u32 index, num;
-} __attribute ((packed)) vhost_vring_state_t;
-
-typedef struct
-{
-  u32 index, flags;
-  u64 desc_user_addr, used_user_addr, avail_user_addr, log_guest_addr;
-} __attribute ((packed)) vhost_vring_addr_t;
-
-typedef struct vhost_user_log
-{
-  u64 size;
-  u64 offset;
-} __attribute ((packed)) vhost_user_log_t;
-
-typedef enum vhost_user_req
-{
-  VHOST_USER_NONE = 0,
-  VHOST_USER_GET_FEATURES = 1,
-  VHOST_USER_SET_FEATURES = 2,
-  VHOST_USER_SET_OWNER = 3,
-  VHOST_USER_RESET_OWNER = 4,
-  VHOST_USER_SET_MEM_TABLE = 5,
-  VHOST_USER_SET_LOG_BASE = 6,
-  VHOST_USER_SET_LOG_FD = 7,
-  VHOST_USER_SET_VRING_NUM = 8,
-  VHOST_USER_SET_VRING_ADDR = 9,
-  VHOST_USER_SET_VRING_BASE = 10,
-  VHOST_USER_GET_VRING_BASE = 11,
-  VHOST_USER_SET_VRING_KICK = 12,
-  VHOST_USER_SET_VRING_CALL = 13,
-  VHOST_USER_SET_VRING_ERR = 14,
-  VHOST_USER_GET_PROTOCOL_FEATURES = 15,
-  VHOST_USER_SET_PROTOCOL_FEATURES = 16,
-  VHOST_USER_GET_QUEUE_NUM = 17,
-  VHOST_USER_SET_VRING_ENABLE = 18,
-  VHOST_USER_MAX
-} vhost_user_req_t;
-
-// vring_desc I/O buffer descriptor
-typedef struct
-{
-  uint64_t addr;  // packet data buffer address
-  uint32_t len;   // packet data buffer size
-  uint16_t flags; // (see below)
-  uint16_t next;  // optional index next descriptor in chain
-} __attribute ((packed)) vring_desc_t;
-
-typedef struct
-{
-  uint16_t flags;
-  volatile uint16_t idx;
-  uint16_t ring[VHOST_VRING_MAX_SIZE];
-} __attribute ((packed)) vring_avail_t;
-
-typedef struct
-{
-  uint16_t flags;
-  uint16_t idx;
-  struct /* vring_used_elem */
-    {
-      uint32_t id;
-      uint32_t len;
-    } ring[VHOST_VRING_MAX_SIZE];
-} __attribute ((packed)) vring_used_t;
-
-typedef struct
-{
-  u8 flags;
-  u8 gso_type;
-  u16 hdr_len;
-  u16 gso_size;
-  u16 csum_start;
-  u16 csum_offset;
-} __attribute ((packed)) virtio_net_hdr_t;
-
-typedef struct  {
-  virtio_net_hdr_t hdr;
-  u16 num_buffers;
-} __attribute ((packed)) virtio_net_hdr_mrg_rxbuf_t;
-
-typedef struct vhost_user_msg {
-  vhost_user_req_t request;
-  u32 flags;
-  u32 size;
-  union
-    {
-      u64 u64;
-      vhost_vring_state_t state;
-      vhost_vring_addr_t addr;
-      vhost_user_memory_t memory;
-      vhost_user_log_t log;
-    };
-} __attribute ((packed)) vhost_user_msg_t;
-/* *INDENT-ON* */
-
-typedef struct
-{
-  CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
-  u16 qsz_mask;
-  u16 last_avail_idx;
-  u16 last_used_idx;
-  u16 n_since_last_int;
-  vring_desc_t *desc;
-  vring_avail_t *avail;
-  vring_used_t *used;
-  f64 int_deadline;
-  u8 started;
-  u8 enabled;
-  u8 log_used;
-  //Put non-runtime in a different cache line
-    CLIB_CACHE_LINE_ALIGN_MARK (cacheline1);
-  int errfd;
-  u32 callfd_idx;
-  u32 kickfd_idx;
-  u64 log_guest_addr;
-
-  /* The rx queue policy (interrupt/adaptive/polling) for this queue */
-  u32 mode;
-} vhost_user_vring_t;
-
-#define VHOST_USER_EVENT_START_TIMER 1
-#define VHOST_USER_EVENT_STOP_TIMER  2
-
-typedef struct
-{
-  CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
-  u32 is_up;
-  u32 admin_up;
-  u32 unix_server_index;
-  u32 clib_file_index;
-  char sock_filename[256];
-  int sock_errno;
-  uword if_index;
-  u32 hw_if_index, sw_if_index;
-
-  //Feature negotiation
-  u64 features;
-  u64 feature_mask;
-  u64 protocol_features;
-
-  //Memory region information
-  u32 nregions;
-  vhost_user_memory_region_t regions[VHOST_MEMORY_MAX_NREGIONS];
-  void *region_mmap_addr[VHOST_MEMORY_MAX_NREGIONS];
-  u64 region_guest_addr_lo[VHOST_MEMORY_MAX_NREGIONS];
-  u64 region_guest_addr_hi[VHOST_MEMORY_MAX_NREGIONS];
-  u32 region_mmap_fd[VHOST_MEMORY_MAX_NREGIONS];
-
-  //Virtual rings
-  vhost_user_vring_t vrings[VHOST_VRING_MAX_N];
-  volatile u32 *vring_locks[VHOST_VRING_MAX_N];
-
-  int virtio_net_hdr_sz;
-  int is_any_layout;
-
-  void *log_base_addr;
-  u64 log_size;
-
-  /* Whether to use spinlock or per_cpu_tx_qid assignment */
-  u8 use_tx_spinlock;
-  u16 *per_cpu_tx_qid;
-
-  /* Vector of active rx queues for this interface */
-  u16 *rx_queues;
-} vhost_user_intf_t;
-
-typedef struct
-{
-  uword dst;
-  uword src;
-  u32 len;
-} vhost_copy_t;
-
-typedef struct
-{
-  u16 qid; /** The interface queue index (Not the virtio vring idx) */
-  u16 device_index; /** The device index */
-  u32 virtio_ring_flags; /** Runtime queue flags  **/
-  u16 first_desc_len; /** Length of the first data descriptor **/
-  virtio_net_hdr_mrg_rxbuf_t hdr; /** Virtio header **/
-} vhost_trace_t;
-
-
-#define VHOST_USER_RX_BUFFERS_N (2 * VLIB_FRAME_SIZE + 2)
-#define VHOST_USER_COPY_ARRAY_N (4 * VLIB_FRAME_SIZE)
-
-typedef struct
-{
-  u32 rx_buffers_len;
-  u32 rx_buffers[VHOST_USER_RX_BUFFERS_N];
-
-  virtio_net_hdr_mrg_rxbuf_t tx_headers[VLIB_FRAME_SIZE];
-  vhost_copy_t copy[VHOST_USER_COPY_ARRAY_N];
-
-  /* This is here so it doesn't end-up
-   * using stack or registers. */
-  vhost_trace_t *current_trace;
-} vhost_cpu_t;
-
-typedef struct
-{
-  mhash_t if_index_by_sock_name;
-  u32 mtu_bytes;
-  vhost_user_intf_t *vhost_user_interfaces;
-  u32 *show_dev_instance_by_real_dev_instance;
-  u32 coalesce_frames;
-  f64 coalesce_time;
-  int dont_dump_vhost_user_memory;
-
-  /** Per-CPU data for vhost-user */
-  vhost_cpu_t *cpus;
-
-  /** Pseudo random iterator */
-  u32 random;
-
-  /* The number of rx interface/queue pairs in interrupt mode */
-  u32 ifq_count;
-
-  /* debug on or off */
-  u8 debug;
-} vhost_user_main_t;
-
-typedef struct
-{
-  u8 if_name[64];
-  u32 sw_if_index;
-  u32 virtio_net_hdr_sz;
-  u64 features;
-  u8 is_server;
-  u8 sock_filename[256];
-  u32 num_regions;
-  int sock_errno;
-} vhost_user_intf_details_t;
-
-int vhost_user_dump_ifs (vnet_main_t * vnm, vlib_main_t * vm,
-			 vhost_user_intf_details_t ** out_vuids);
-
-#endif
-
-/*
- * fd.io coding-style-patch-verification: ON
- *
- * Local Variables:
- * eval: (c-set-style "gnu")
- * End:
- */