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 #if RTE_VERSION >= RTE_VERSION_NUM(2, 2, 0, 0)
30 #define VHOST_USER_F_PROTOCOL_FEATURES 30
31 #define VHOST_USER_PROTOCOL_F_MQ 0
32 #define VHOST_USER_PROTOCOL_FEATURES (1ULL << VHOST_USER_PROTOCOL_F_MQ)
34 /* If multiqueue is provided by host, then we suppport it. */
35 #define VIRTIO_NET_CTRL_MQ 4
36 #define VIRTIO_NET_CTRL_MQ_VQ_PAIRS_SET 0
37 #define VIRTIO_NET_CTRL_MQ_VQ_PAIRS_MIN 1
38 #define VIRTIO_NET_CTRL_MQ_VQ_PAIRS_MAX 0x8000
41 #define foreach_virtio_net_feature \
42 _ (VIRTIO_NET_F_MRG_RXBUF, 15) \
43 _ (VIRTIO_F_ANY_LAYOUT, 27)
46 #define _(f,n) FEAT_##f = (n),
47 foreach_virtio_net_feature
49 } virtio_net_feature_t;
51 int vhost_user_create_if(vnet_main_t * vnm, vlib_main_t * vm,
52 const char * sock_filename, u8 is_server,
53 u32 * sw_if_index, u64 feature_mask,
54 u8 renumber, u32 custom_dev_instance, u8 *hwaddr);
55 int vhost_user_modify_if(vnet_main_t * vnm, vlib_main_t * vm,
56 const char * sock_filename, u8 is_server,
57 u32 sw_if_index, u64 feature_mask,
58 u8 renumber, u32 custom_dev_instance);
59 int vhost_user_delete_if(vnet_main_t * vnm, vlib_main_t * vm, u32 sw_if_index);
61 typedef struct vhost_user_memory_region {
66 } vhost_user_memory_region_t;
68 typedef struct vhost_user_memory {
71 vhost_user_memory_region_t regions[VHOST_MEMORY_MAX_NREGIONS];
72 } vhost_user_memory_t;
74 typedef struct vhost_vring_state {
75 unsigned int index, num;
76 } vhost_vring_state_t;
78 typedef struct vhost_vring_addr {
79 unsigned int index, flags;
80 u64 desc_user_addr, used_user_addr, avail_user_addr, log_guest_addr;
83 typedef enum vhost_user_req {
85 VHOST_USER_GET_FEATURES = 1,
86 VHOST_USER_SET_FEATURES = 2,
87 VHOST_USER_SET_OWNER = 3,
88 VHOST_USER_RESET_OWNER = 4,
89 VHOST_USER_SET_MEM_TABLE = 5,
90 VHOST_USER_SET_LOG_BASE = 6,
91 VHOST_USER_SET_LOG_FD = 7,
92 VHOST_USER_SET_VRING_NUM = 8,
93 VHOST_USER_SET_VRING_ADDR = 9,
94 VHOST_USER_SET_VRING_BASE = 10,
95 VHOST_USER_GET_VRING_BASE = 11,
96 VHOST_USER_SET_VRING_KICK = 12,
97 VHOST_USER_SET_VRING_CALL = 13,
98 VHOST_USER_SET_VRING_ERR = 14,
99 #if RTE_VERSION >= RTE_VERSION_NUM(2, 2, 0, 0)
100 VHOST_USER_GET_PROTOCOL_FEATURES = 15,
101 VHOST_USER_SET_PROTOCOL_FEATURES = 16,
102 VHOST_USER_GET_QUEUE_NUM = 17,
103 VHOST_USER_SET_VRING_ENABLE = 18,
108 // vring_desc I/O buffer descriptor
110 uint64_t addr; // packet data buffer address
111 uint32_t len; // packet data buffer size
112 uint16_t flags; // (see below)
113 uint16_t next; // optional index next descriptor in chain
114 } __attribute ((packed)) vring_desc_t;
119 uint16_t ring[VHOST_VRING_MAX_SIZE];
120 } __attribute ((packed)) vring_avail_t;
125 struct /* vring_used_elem */ {
128 } ring[VHOST_VRING_MAX_SIZE];
129 } __attribute ((packed)) vring_used_t;
138 } __attribute ((packed)) virtio_net_hdr_t;
141 virtio_net_hdr_t hdr;
143 } __attribute ((packed)) virtio_net_hdr_mrg_rxbuf_t;
145 typedef struct vhost_user_msg {
146 vhost_user_req_t request;
151 vhost_vring_state_t state;
152 vhost_vring_addr_t addr;
153 vhost_user_memory_t memory;
155 } __attribute ((packed)) vhost_user_msg_t;
162 vring_avail_t *avail;
168 u32 n_since_last_int;
170 } vhost_user_vring_t;
173 CLIB_CACHE_LINE_ALIGN_MARK(cacheline0);
174 volatile u32 * lockp;
180 char sock_filename[256];
183 u32 hw_if_index, sw_if_index;
190 vhost_user_memory_region_t regions[VHOST_MEMORY_MAX_NREGIONS];
191 void * region_mmap_addr[VHOST_MEMORY_MAX_NREGIONS];
192 u32 region_mmap_fd[VHOST_MEMORY_MAX_NREGIONS];
193 vhost_user_vring_t vrings[2];
194 int virtio_net_hdr_sz;
196 u32 * d_trace_buffers;
202 vhost_user_intf_t * vhost_user_interfaces;
203 u32 * vhost_user_inactive_interfaces_index;
204 uword * vhost_user_interface_index_by_listener_fd;
205 uword * vhost_user_interface_index_by_sock_fd;
206 uword * vhost_user_interface_index_by_sw_if_index;
207 u32 * show_dev_instance_by_real_dev_instance;
210 int dont_dump_vhost_user_memory;
216 u32 virtio_net_hdr_sz;
219 u8 sock_filename[256];
222 } vhost_user_intf_details_t;
224 int vhost_user_dump_ifs(vnet_main_t * vnm, vlib_main_t * vm,
225 vhost_user_intf_details_t **out_vuids);
227 // CLI commands to be used from dpdk
229 vhost_user_connect_command_fn (vlib_main_t * vm,
230 unformat_input_t * input,
231 vlib_cli_command_t * cmd);
233 vhost_user_delete_command_fn (vlib_main_t * vm,
234 unformat_input_t * input,
235 vlib_cli_command_t * cmd);
237 show_vhost_user_command_fn (vlib_main_t * vm,
238 unformat_input_t * input,
239 vlib_cli_command_t * cmd);