2 * Copyright (c) 2015 Cisco and/or its affiliates.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at:
7 * http://www.apache.org/licenses/LICENSE-2.0
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
15 #ifndef __VIRTIO_VHOST_USER_H__
16 #define __VIRTIO_VHOST_USER_H__
17 /* vhost-user data structures */
19 #define VHOST_MEMORY_MAX_NREGIONS 8
20 #define VHOST_USER_MSG_HDR_SZ 12
21 #define VHOST_VRING_MAX_SIZE 32768
22 #define VHOST_NET_VRING_IDX_RX 0
23 #define VHOST_NET_VRING_IDX_TX 1
24 #define VHOST_NET_VRING_NUM 2
26 #define VIRTQ_DESC_F_NEXT 1
27 #define VHOST_USER_REPLY_MASK (0x1 << 2)
29 #define VHOST_USER_PROTOCOL_F_MQ 0
30 #define VHOST_USER_PROTOCOL_F_LOG_SHMFD 1
31 #define VHOST_VRING_F_LOG 0
33 #define VHOST_USER_F_PROTOCOL_FEATURES 30
35 #define RTE_VERSION_NUM(a,b,c,d) 1
38 #if RTE_VERSION >= RTE_VERSION_NUM(16, 4, 0, 0)
39 #define VHOST_USER_PROTOCOL_FEATURES ((1ULL << VHOST_USER_PROTOCOL_F_MQ) | \
40 (1ULL << VHOST_USER_PROTOCOL_F_LOG_SHMFD))
42 #define VHOST_USER_PROTOCOL_FEATURES (1ULL << VHOST_USER_PROTOCOL_F_MQ)
45 /* If multiqueue is provided by host, then we suppport it. */
46 #define VIRTIO_NET_CTRL_MQ 4
47 #define VIRTIO_NET_CTRL_MQ_VQ_PAIRS_SET 0
48 #define VIRTIO_NET_CTRL_MQ_VQ_PAIRS_MIN 1
49 #define VIRTIO_NET_CTRL_MQ_VQ_PAIRS_MAX 0x8000
51 #define foreach_virtio_net_feature \
52 _ (VIRTIO_NET_F_MRG_RXBUF, 15) \
53 _ (VIRTIO_F_ANY_LAYOUT, 27) \
54 _ (VHOST_F_LOG_ALL, 26) \
55 _ (VIRTIO_NET_F_GUEST_ANNOUNCE, 21) \
56 _ (VHOST_USER_F_PROTOCOL_FEATURES, 30)
61 #define _(f,n) FEAT_##f = (n),
62 foreach_virtio_net_feature
64 } virtio_net_feature_t;
66 int vhost_user_create_if (vnet_main_t * vnm, vlib_main_t * vm,
67 const char *sock_filename, u8 is_server,
68 u32 * sw_if_index, u64 feature_mask,
69 u8 renumber, u32 custom_dev_instance, u8 * hwaddr);
70 int vhost_user_modify_if (vnet_main_t * vnm, vlib_main_t * vm,
71 const char *sock_filename, u8 is_server,
72 u32 sw_if_index, u64 feature_mask,
73 u8 renumber, u32 custom_dev_instance);
74 int vhost_user_delete_if (vnet_main_t * vnm, vlib_main_t * vm,
77 typedef struct vhost_user_memory_region
83 } vhost_user_memory_region_t;
85 typedef struct vhost_user_memory
89 vhost_user_memory_region_t regions[VHOST_MEMORY_MAX_NREGIONS];
90 } vhost_user_memory_t;
94 unsigned int index, num;
95 } vhost_vring_state_t;
99 unsigned int index, flags;
100 u64 desc_user_addr, used_user_addr, avail_user_addr, log_guest_addr;
101 } vhost_vring_addr_t;
103 typedef struct vhost_user_log
109 typedef enum vhost_user_req
112 VHOST_USER_GET_FEATURES = 1,
113 VHOST_USER_SET_FEATURES = 2,
114 VHOST_USER_SET_OWNER = 3,
115 VHOST_USER_RESET_OWNER = 4,
116 VHOST_USER_SET_MEM_TABLE = 5,
117 VHOST_USER_SET_LOG_BASE = 6,
118 VHOST_USER_SET_LOG_FD = 7,
119 VHOST_USER_SET_VRING_NUM = 8,
120 VHOST_USER_SET_VRING_ADDR = 9,
121 VHOST_USER_SET_VRING_BASE = 10,
122 VHOST_USER_GET_VRING_BASE = 11,
123 VHOST_USER_SET_VRING_KICK = 12,
124 VHOST_USER_SET_VRING_CALL = 13,
125 VHOST_USER_SET_VRING_ERR = 14,
126 VHOST_USER_GET_PROTOCOL_FEATURES = 15,
127 VHOST_USER_SET_PROTOCOL_FEATURES = 16,
128 VHOST_USER_GET_QUEUE_NUM = 17,
129 VHOST_USER_SET_VRING_ENABLE = 18,
133 // vring_desc I/O buffer descriptor
137 uint64_t addr; // packet data buffer address
138 uint32_t len; // packet data buffer size
139 uint16_t flags; // (see below)
140 uint16_t next; // optional index next descriptor in chain
141 } __attribute ((packed)) vring_desc_t;
147 uint16_t ring[VHOST_VRING_MAX_SIZE];
148 } __attribute ((packed)) vring_avail_t;
154 struct /* vring_used_elem */
158 } ring[VHOST_VRING_MAX_SIZE];
159 } __attribute ((packed)) vring_used_t;
169 } __attribute ((packed)) virtio_net_hdr_t;
172 virtio_net_hdr_t hdr;
174 } __attribute ((packed)) virtio_net_hdr_mrg_rxbuf_t;
176 typedef struct vhost_user_msg {
177 vhost_user_req_t request;
183 vhost_vring_state_t state;
184 vhost_vring_addr_t addr;
185 vhost_user_memory_t memory;
186 vhost_user_log_t log;
188 } __attribute ((packed)) vhost_user_msg_t;
197 vring_avail_t *avail;
206 u32 n_since_last_int;
208 } vhost_user_vring_t;
212 CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
219 char sock_filename[256];
222 u32 hw_if_index, sw_if_index;
228 u64 protocol_features;
230 vhost_user_memory_region_t regions[VHOST_MEMORY_MAX_NREGIONS];
231 void *region_mmap_addr[VHOST_MEMORY_MAX_NREGIONS];
232 u32 region_mmap_fd[VHOST_MEMORY_MAX_NREGIONS];
233 vhost_user_vring_t vrings[2];
234 int virtio_net_hdr_sz;
236 u32 *d_trace_buffers;
246 vhost_user_intf_t *vhost_user_interfaces;
247 u32 *vhost_user_inactive_interfaces_index;
248 uword *vhost_user_interface_index_by_listener_fd;
249 uword *vhost_user_interface_index_by_sock_fd;
250 uword *vhost_user_interface_index_by_sw_if_index;
251 u32 *show_dev_instance_by_real_dev_instance;
254 int dont_dump_vhost_user_memory;
261 u32 virtio_net_hdr_sz;
264 u8 sock_filename[256];
267 } vhost_user_intf_details_t;
269 int vhost_user_dump_ifs (vnet_main_t * vnm, vlib_main_t * vm,
270 vhost_user_intf_details_t ** out_vuids);
272 // CLI commands to be used from dpdk
273 clib_error_t *vhost_user_connect_command_fn (vlib_main_t * vm,
274 unformat_input_t * input,
275 vlib_cli_command_t * cmd);
276 clib_error_t *vhost_user_delete_command_fn (vlib_main_t * vm,
277 unformat_input_t * input,
278 vlib_cli_command_t * cmd);
279 clib_error_t *show_vhost_user_command_fn (vlib_main_t * vm,
280 unformat_input_t * input,
281 vlib_cli_command_t * cmd);
286 * fd.io coding-style-patch-verification: ON
289 * eval: (c-set-style "gnu")