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
34 #if RTE_VERSION >= RTE_VERSION_NUM(16, 4, 0, 0)
35 #define VHOST_USER_PROTOCOL_FEATURES ((1ULL << VHOST_USER_PROTOCOL_F_MQ) | \
36 (1ULL << VHOST_USER_PROTOCOL_F_LOG_SHMFD))
38 #define VHOST_USER_PROTOCOL_FEATURES (1ULL << VHOST_USER_PROTOCOL_F_MQ)
41 /* If multiqueue is provided by host, then we suppport it. */
42 #define VIRTIO_NET_CTRL_MQ 4
43 #define VIRTIO_NET_CTRL_MQ_VQ_PAIRS_SET 0
44 #define VIRTIO_NET_CTRL_MQ_VQ_PAIRS_MIN 1
45 #define VIRTIO_NET_CTRL_MQ_VQ_PAIRS_MAX 0x8000
47 #define foreach_virtio_net_feature \
48 _ (VIRTIO_NET_F_MRG_RXBUF, 15) \
49 _ (VIRTIO_F_ANY_LAYOUT, 27) \
50 _ (VHOST_F_LOG_ALL, 26) \
51 _ (VIRTIO_NET_F_GUEST_ANNOUNCE, 21) \
52 _ (VHOST_USER_F_PROTOCOL_FEATURES, 30)
57 #define _(f,n) FEAT_##f = (n),
58 foreach_virtio_net_feature
60 } virtio_net_feature_t;
62 int vhost_user_create_if (vnet_main_t * vnm, vlib_main_t * vm,
63 const char *sock_filename, u8 is_server,
64 u32 * sw_if_index, u64 feature_mask,
65 u8 renumber, u32 custom_dev_instance, u8 * hwaddr);
66 int vhost_user_modify_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);
70 int vhost_user_delete_if (vnet_main_t * vnm, vlib_main_t * vm,
73 typedef struct vhost_user_memory_region
79 } vhost_user_memory_region_t;
81 typedef struct vhost_user_memory
85 vhost_user_memory_region_t regions[VHOST_MEMORY_MAX_NREGIONS];
86 } vhost_user_memory_t;
90 unsigned int index, num;
91 } vhost_vring_state_t;
95 unsigned int index, flags;
96 u64 desc_user_addr, used_user_addr, avail_user_addr, log_guest_addr;
99 typedef struct vhost_user_log
105 typedef enum vhost_user_req
108 VHOST_USER_GET_FEATURES = 1,
109 VHOST_USER_SET_FEATURES = 2,
110 VHOST_USER_SET_OWNER = 3,
111 VHOST_USER_RESET_OWNER = 4,
112 VHOST_USER_SET_MEM_TABLE = 5,
113 VHOST_USER_SET_LOG_BASE = 6,
114 VHOST_USER_SET_LOG_FD = 7,
115 VHOST_USER_SET_VRING_NUM = 8,
116 VHOST_USER_SET_VRING_ADDR = 9,
117 VHOST_USER_SET_VRING_BASE = 10,
118 VHOST_USER_GET_VRING_BASE = 11,
119 VHOST_USER_SET_VRING_KICK = 12,
120 VHOST_USER_SET_VRING_CALL = 13,
121 VHOST_USER_SET_VRING_ERR = 14,
122 VHOST_USER_GET_PROTOCOL_FEATURES = 15,
123 VHOST_USER_SET_PROTOCOL_FEATURES = 16,
124 VHOST_USER_GET_QUEUE_NUM = 17,
125 VHOST_USER_SET_VRING_ENABLE = 18,
129 // vring_desc I/O buffer descriptor
133 uint64_t addr; // packet data buffer address
134 uint32_t len; // packet data buffer size
135 uint16_t flags; // (see below)
136 uint16_t next; // optional index next descriptor in chain
137 } __attribute ((packed)) vring_desc_t;
143 uint16_t ring[VHOST_VRING_MAX_SIZE];
144 } __attribute ((packed)) vring_avail_t;
150 struct /* vring_used_elem */
154 } ring[VHOST_VRING_MAX_SIZE];
155 } __attribute ((packed)) vring_used_t;
165 } __attribute ((packed)) virtio_net_hdr_t;
168 virtio_net_hdr_t hdr;
170 } __attribute ((packed)) virtio_net_hdr_mrg_rxbuf_t;
172 typedef struct vhost_user_msg {
173 vhost_user_req_t request;
179 vhost_vring_state_t state;
180 vhost_vring_addr_t addr;
181 vhost_user_memory_t memory;
182 vhost_user_log_t log;
184 } __attribute ((packed)) vhost_user_msg_t;
193 vring_avail_t *avail;
202 u32 n_since_last_int;
204 } vhost_user_vring_t;
208 CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
215 char sock_filename[256];
218 u32 hw_if_index, sw_if_index;
224 u64 protocol_features;
226 vhost_user_memory_region_t regions[VHOST_MEMORY_MAX_NREGIONS];
227 void *region_mmap_addr[VHOST_MEMORY_MAX_NREGIONS];
228 u32 region_mmap_fd[VHOST_MEMORY_MAX_NREGIONS];
229 vhost_user_vring_t vrings[2];
230 int virtio_net_hdr_sz;
232 u32 *d_trace_buffers;
242 vhost_user_intf_t *vhost_user_interfaces;
243 u32 *vhost_user_inactive_interfaces_index;
244 uword *vhost_user_interface_index_by_listener_fd;
245 uword *vhost_user_interface_index_by_sock_fd;
246 uword *vhost_user_interface_index_by_sw_if_index;
247 u32 *show_dev_instance_by_real_dev_instance;
250 int dont_dump_vhost_user_memory;
257 u32 virtio_net_hdr_sz;
260 u8 sock_filename[256];
263 } vhost_user_intf_details_t;
265 int vhost_user_dump_ifs (vnet_main_t * vnm, vlib_main_t * vm,
266 vhost_user_intf_details_t ** out_vuids);
268 // CLI commands to be used from dpdk
269 clib_error_t *vhost_user_connect_command_fn (vlib_main_t * vm,
270 unformat_input_t * input,
271 vlib_cli_command_t * cmd);
272 clib_error_t *vhost_user_delete_command_fn (vlib_main_t * vm,
273 unformat_input_t * input,
274 vlib_cli_command_t * cmd);
275 clib_error_t *show_vhost_user_command_fn (vlib_main_t * vm,
276 unformat_input_t * input,
277 vlib_cli_command_t * cmd);
282 * fd.io coding-style-patch-verification: ON
285 * eval: (c-set-style "gnu")