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Commit | Line | Data |
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5f6f6664 NN |
1 | /* |
2 | * vhost-user | |
3 | * | |
4 | * Copyright (c) 2013 Virtual Open Systems Sarl. | |
5 | * | |
6 | * This work is licensed under the terms of the GNU GPL, version 2 or later. | |
7 | * See the COPYING file in the top-level directory. | |
8 | * | |
9 | */ | |
10 | ||
9b8bfe21 | 11 | #include "qemu/osdep.h" |
da34e65c | 12 | #include "qapi/error.h" |
5f6f6664 | 13 | #include "hw/virtio/vhost.h" |
4d0cf552 | 14 | #include "hw/virtio/vhost-user.h" |
5f6f6664 | 15 | #include "hw/virtio/vhost-backend.h" |
44866521 | 16 | #include "hw/virtio/virtio.h" |
3e866365 | 17 | #include "hw/virtio/virtio-net.h" |
4d43a603 | 18 | #include "chardev/char-fe.h" |
57dc0217 | 19 | #include "io/channel-socket.h" |
5f6f6664 NN |
20 | #include "sysemu/kvm.h" |
21 | #include "qemu/error-report.h" | |
db725815 | 22 | #include "qemu/main-loop.h" |
5f6f6664 | 23 | #include "qemu/sockets.h" |
efbfeb81 | 24 | #include "sysemu/cryptodev.h" |
9ccbfe14 DDAG |
25 | #include "migration/migration.h" |
26 | #include "migration/postcopy-ram.h" | |
6864a7b5 | 27 | #include "trace.h" |
5f6f6664 | 28 | |
5f6f6664 NN |
29 | #include <sys/ioctl.h> |
30 | #include <sys/socket.h> | |
31 | #include <sys/un.h> | |
18658a3c PB |
32 | |
33 | #include "standard-headers/linux/vhost_types.h" | |
34 | ||
35 | #ifdef CONFIG_LINUX | |
375318d0 | 36 | #include <linux/userfaultfd.h> |
18658a3c | 37 | #endif |
5f6f6664 | 38 | |
27598393 | 39 | #define VHOST_MEMORY_BASELINE_NREGIONS 8 |
dcb10c00 | 40 | #define VHOST_USER_F_PROTOCOL_FEATURES 30 |
5f57fbea | 41 | #define VHOST_USER_SLAVE_MAX_FDS 8 |
e2051e9e | 42 | |
27598393 RN |
43 | /* |
44 | * Set maximum number of RAM slots supported to | |
45 | * the maximum number supported by the target | |
46 | * hardware plaform. | |
47 | */ | |
48 | #if defined(TARGET_X86) || defined(TARGET_X86_64) || \ | |
49 | defined(TARGET_ARM) || defined(TARGET_ARM_64) | |
50 | #include "hw/acpi/acpi.h" | |
51 | #define VHOST_USER_MAX_RAM_SLOTS ACPI_MAX_RAM_SLOTS | |
52 | ||
53 | #elif defined(TARGET_PPC) || defined(TARGET_PPC_64) | |
54 | #include "hw/ppc/spapr.h" | |
55 | #define VHOST_USER_MAX_RAM_SLOTS SPAPR_MAX_RAM_SLOTS | |
56 | ||
57 | #else | |
58 | #define VHOST_USER_MAX_RAM_SLOTS 512 | |
59 | #endif | |
60 | ||
4c3e257b CL |
61 | /* |
62 | * Maximum size of virtio device config space | |
63 | */ | |
64 | #define VHOST_USER_MAX_CONFIG_SIZE 256 | |
65 | ||
de1372d4 TC |
66 | enum VhostUserProtocolFeature { |
67 | VHOST_USER_PROTOCOL_F_MQ = 0, | |
68 | VHOST_USER_PROTOCOL_F_LOG_SHMFD = 1, | |
69 | VHOST_USER_PROTOCOL_F_RARP = 2, | |
ca525ce5 | 70 | VHOST_USER_PROTOCOL_F_REPLY_ACK = 3, |
c5f048d8 | 71 | VHOST_USER_PROTOCOL_F_NET_MTU = 4, |
4bbeeba0 | 72 | VHOST_USER_PROTOCOL_F_SLAVE_REQ = 5, |
5df04f17 | 73 | VHOST_USER_PROTOCOL_F_CROSS_ENDIAN = 6, |
efbfeb81 | 74 | VHOST_USER_PROTOCOL_F_CRYPTO_SESSION = 7, |
9ccbfe14 | 75 | VHOST_USER_PROTOCOL_F_PAGEFAULT = 8, |
1c3e5a26 | 76 | VHOST_USER_PROTOCOL_F_CONFIG = 9, |
5f57fbea | 77 | VHOST_USER_PROTOCOL_F_SLAVE_SEND_FD = 10, |
44866521 | 78 | VHOST_USER_PROTOCOL_F_HOST_NOTIFIER = 11, |
5ad204bf | 79 | VHOST_USER_PROTOCOL_F_INFLIGHT_SHMFD = 12, |
d91d57e6 | 80 | VHOST_USER_PROTOCOL_F_RESET_DEVICE = 13, |
6b0eff1a RN |
81 | /* Feature 14 reserved for VHOST_USER_PROTOCOL_F_INBAND_NOTIFICATIONS. */ |
82 | VHOST_USER_PROTOCOL_F_CONFIGURE_MEM_SLOTS = 15, | |
de1372d4 TC |
83 | VHOST_USER_PROTOCOL_F_MAX |
84 | }; | |
85 | ||
86 | #define VHOST_USER_PROTOCOL_FEATURE_MASK ((1 << VHOST_USER_PROTOCOL_F_MAX) - 1) | |
5f6f6664 NN |
87 | |
88 | typedef enum VhostUserRequest { | |
89 | VHOST_USER_NONE = 0, | |
90 | VHOST_USER_GET_FEATURES = 1, | |
91 | VHOST_USER_SET_FEATURES = 2, | |
92 | VHOST_USER_SET_OWNER = 3, | |
60915dc4 | 93 | VHOST_USER_RESET_OWNER = 4, |
5f6f6664 NN |
94 | VHOST_USER_SET_MEM_TABLE = 5, |
95 | VHOST_USER_SET_LOG_BASE = 6, | |
96 | VHOST_USER_SET_LOG_FD = 7, | |
97 | VHOST_USER_SET_VRING_NUM = 8, | |
98 | VHOST_USER_SET_VRING_ADDR = 9, | |
99 | VHOST_USER_SET_VRING_BASE = 10, | |
100 | VHOST_USER_GET_VRING_BASE = 11, | |
101 | VHOST_USER_SET_VRING_KICK = 12, | |
102 | VHOST_USER_SET_VRING_CALL = 13, | |
103 | VHOST_USER_SET_VRING_ERR = 14, | |
dcb10c00 MT |
104 | VHOST_USER_GET_PROTOCOL_FEATURES = 15, |
105 | VHOST_USER_SET_PROTOCOL_FEATURES = 16, | |
e2051e9e | 106 | VHOST_USER_GET_QUEUE_NUM = 17, |
7263a0ad | 107 | VHOST_USER_SET_VRING_ENABLE = 18, |
3e866365 | 108 | VHOST_USER_SEND_RARP = 19, |
c5f048d8 | 109 | VHOST_USER_NET_SET_MTU = 20, |
4bbeeba0 | 110 | VHOST_USER_SET_SLAVE_REQ_FD = 21, |
6dcdd06e | 111 | VHOST_USER_IOTLB_MSG = 22, |
5df04f17 | 112 | VHOST_USER_SET_VRING_ENDIAN = 23, |
4c3e257b CL |
113 | VHOST_USER_GET_CONFIG = 24, |
114 | VHOST_USER_SET_CONFIG = 25, | |
efbfeb81 GA |
115 | VHOST_USER_CREATE_CRYPTO_SESSION = 26, |
116 | VHOST_USER_CLOSE_CRYPTO_SESSION = 27, | |
d3dff7a5 | 117 | VHOST_USER_POSTCOPY_ADVISE = 28, |
6864a7b5 | 118 | VHOST_USER_POSTCOPY_LISTEN = 29, |
c639187e | 119 | VHOST_USER_POSTCOPY_END = 30, |
5ad204bf XY |
120 | VHOST_USER_GET_INFLIGHT_FD = 31, |
121 | VHOST_USER_SET_INFLIGHT_FD = 32, | |
bd2e44fe | 122 | VHOST_USER_GPU_SET_SOCKET = 33, |
d91d57e6 | 123 | VHOST_USER_RESET_DEVICE = 34, |
6b0eff1a RN |
124 | /* Message number 35 reserved for VHOST_USER_VRING_KICK. */ |
125 | VHOST_USER_GET_MAX_MEM_SLOTS = 36, | |
f1aeb14b RN |
126 | VHOST_USER_ADD_MEM_REG = 37, |
127 | VHOST_USER_REM_MEM_REG = 38, | |
5f6f6664 NN |
128 | VHOST_USER_MAX |
129 | } VhostUserRequest; | |
130 | ||
4bbeeba0 MAL |
131 | typedef enum VhostUserSlaveRequest { |
132 | VHOST_USER_SLAVE_NONE = 0, | |
6dcdd06e | 133 | VHOST_USER_SLAVE_IOTLB_MSG = 1, |
4c3e257b | 134 | VHOST_USER_SLAVE_CONFIG_CHANGE_MSG = 2, |
44866521 | 135 | VHOST_USER_SLAVE_VRING_HOST_NOTIFIER_MSG = 3, |
4bbeeba0 MAL |
136 | VHOST_USER_SLAVE_MAX |
137 | } VhostUserSlaveRequest; | |
138 | ||
5f6f6664 NN |
139 | typedef struct VhostUserMemoryRegion { |
140 | uint64_t guest_phys_addr; | |
141 | uint64_t memory_size; | |
142 | uint64_t userspace_addr; | |
3fd74b84 | 143 | uint64_t mmap_offset; |
5f6f6664 NN |
144 | } VhostUserMemoryRegion; |
145 | ||
146 | typedef struct VhostUserMemory { | |
147 | uint32_t nregions; | |
148 | uint32_t padding; | |
27598393 | 149 | VhostUserMemoryRegion regions[VHOST_MEMORY_BASELINE_NREGIONS]; |
5f6f6664 NN |
150 | } VhostUserMemory; |
151 | ||
f1aeb14b | 152 | typedef struct VhostUserMemRegMsg { |
3009edff | 153 | uint64_t padding; |
f1aeb14b RN |
154 | VhostUserMemoryRegion region; |
155 | } VhostUserMemRegMsg; | |
156 | ||
2b8819c6 VK |
157 | typedef struct VhostUserLog { |
158 | uint64_t mmap_size; | |
159 | uint64_t mmap_offset; | |
160 | } VhostUserLog; | |
161 | ||
4c3e257b CL |
162 | typedef struct VhostUserConfig { |
163 | uint32_t offset; | |
164 | uint32_t size; | |
165 | uint32_t flags; | |
166 | uint8_t region[VHOST_USER_MAX_CONFIG_SIZE]; | |
167 | } VhostUserConfig; | |
168 | ||
efbfeb81 GA |
169 | #define VHOST_CRYPTO_SYM_HMAC_MAX_KEY_LEN 512 |
170 | #define VHOST_CRYPTO_SYM_CIPHER_MAX_KEY_LEN 64 | |
171 | ||
172 | typedef struct VhostUserCryptoSession { | |
173 | /* session id for success, -1 on errors */ | |
174 | int64_t session_id; | |
175 | CryptoDevBackendSymSessionInfo session_setup_data; | |
176 | uint8_t key[VHOST_CRYPTO_SYM_CIPHER_MAX_KEY_LEN]; | |
177 | uint8_t auth_key[VHOST_CRYPTO_SYM_HMAC_MAX_KEY_LEN]; | |
178 | } VhostUserCryptoSession; | |
179 | ||
4c3e257b CL |
180 | static VhostUserConfig c __attribute__ ((unused)); |
181 | #define VHOST_USER_CONFIG_HDR_SIZE (sizeof(c.offset) \ | |
182 | + sizeof(c.size) \ | |
183 | + sizeof(c.flags)) | |
184 | ||
44866521 TB |
185 | typedef struct VhostUserVringArea { |
186 | uint64_t u64; | |
187 | uint64_t size; | |
188 | uint64_t offset; | |
189 | } VhostUserVringArea; | |
190 | ||
5ad204bf XY |
191 | typedef struct VhostUserInflight { |
192 | uint64_t mmap_size; | |
193 | uint64_t mmap_offset; | |
194 | uint16_t num_queues; | |
195 | uint16_t queue_size; | |
196 | } VhostUserInflight; | |
197 | ||
24e34754 | 198 | typedef struct { |
5f6f6664 NN |
199 | VhostUserRequest request; |
200 | ||
201 | #define VHOST_USER_VERSION_MASK (0x3) | |
202 | #define VHOST_USER_REPLY_MASK (0x1<<2) | |
ca525ce5 | 203 | #define VHOST_USER_NEED_REPLY_MASK (0x1 << 3) |
5f6f6664 NN |
204 | uint32_t flags; |
205 | uint32_t size; /* the following payload size */ | |
24e34754 MT |
206 | } QEMU_PACKED VhostUserHeader; |
207 | ||
208 | typedef union { | |
5f6f6664 NN |
209 | #define VHOST_USER_VRING_IDX_MASK (0xff) |
210 | #define VHOST_USER_VRING_NOFD_MASK (0x1<<8) | |
211 | uint64_t u64; | |
212 | struct vhost_vring_state state; | |
213 | struct vhost_vring_addr addr; | |
214 | VhostUserMemory memory; | |
f1aeb14b | 215 | VhostUserMemRegMsg mem_reg; |
2b8819c6 | 216 | VhostUserLog log; |
6dcdd06e | 217 | struct vhost_iotlb_msg iotlb; |
4c3e257b | 218 | VhostUserConfig config; |
efbfeb81 | 219 | VhostUserCryptoSession session; |
44866521 | 220 | VhostUserVringArea area; |
5ad204bf | 221 | VhostUserInflight inflight; |
24e34754 MT |
222 | } VhostUserPayload; |
223 | ||
224 | typedef struct VhostUserMsg { | |
225 | VhostUserHeader hdr; | |
226 | VhostUserPayload payload; | |
5f6f6664 NN |
227 | } QEMU_PACKED VhostUserMsg; |
228 | ||
229 | static VhostUserMsg m __attribute__ ((unused)); | |
24e34754 | 230 | #define VHOST_USER_HDR_SIZE (sizeof(VhostUserHeader)) |
5f6f6664 | 231 | |
24e34754 | 232 | #define VHOST_USER_PAYLOAD_SIZE (sizeof(VhostUserPayload)) |
5f6f6664 NN |
233 | |
234 | /* The version of the protocol we support */ | |
235 | #define VHOST_USER_VERSION (0x1) | |
236 | ||
2152f3fe | 237 | struct vhost_user { |
9ccbfe14 | 238 | struct vhost_dev *dev; |
4d0cf552 TB |
239 | /* Shared between vhost devs of the same virtio device */ |
240 | VhostUserState *user; | |
57dc0217 GK |
241 | QIOChannel *slave_ioc; |
242 | GSource *slave_src; | |
9ccbfe14 | 243 | NotifierWithReturn postcopy_notifier; |
f82c1116 | 244 | struct PostCopyFD postcopy_fd; |
27598393 | 245 | uint64_t postcopy_client_bases[VHOST_USER_MAX_RAM_SLOTS]; |
905125d0 DDAG |
246 | /* Length of the region_rb and region_rb_offset arrays */ |
247 | size_t region_rb_len; | |
248 | /* RAMBlock associated with a given region */ | |
249 | RAMBlock **region_rb; | |
250 | /* The offset from the start of the RAMBlock to the start of the | |
251 | * vhost region. | |
252 | */ | |
253 | ram_addr_t *region_rb_offset; | |
254 | ||
6864a7b5 DDAG |
255 | /* True once we've entered postcopy_listen */ |
256 | bool postcopy_listen; | |
f1aeb14b RN |
257 | |
258 | /* Our current regions */ | |
259 | int num_shadow_regions; | |
27598393 | 260 | struct vhost_memory_region shadow_regions[VHOST_USER_MAX_RAM_SLOTS]; |
f1aeb14b RN |
261 | }; |
262 | ||
263 | struct scrub_regions { | |
264 | struct vhost_memory_region *region; | |
265 | int reg_idx; | |
266 | int fd_idx; | |
2152f3fe MAL |
267 | }; |
268 | ||
5f6f6664 NN |
269 | static bool ioeventfd_enabled(void) |
270 | { | |
b0aa77d3 | 271 | return !kvm_enabled() || kvm_eventfds_enabled(); |
5f6f6664 NN |
272 | } |
273 | ||
9af84c02 | 274 | static int vhost_user_read_header(struct vhost_dev *dev, VhostUserMsg *msg) |
5f6f6664 | 275 | { |
2152f3fe | 276 | struct vhost_user *u = dev->opaque; |
4d0cf552 | 277 | CharBackend *chr = u->user->chr; |
5f6f6664 NN |
278 | uint8_t *p = (uint8_t *) msg; |
279 | int r, size = VHOST_USER_HDR_SIZE; | |
280 | ||
281 | r = qemu_chr_fe_read_all(chr, p, size); | |
282 | if (r != size) { | |
5421f318 | 283 | error_report("Failed to read msg header. Read %d instead of %d." |
24e34754 | 284 | " Original request %d.", r, size, msg->hdr.request); |
9af84c02 | 285 | return -1; |
5f6f6664 NN |
286 | } |
287 | ||
288 | /* validate received flags */ | |
24e34754 | 289 | if (msg->hdr.flags != (VHOST_USER_REPLY_MASK | VHOST_USER_VERSION)) { |
5f6f6664 | 290 | error_report("Failed to read msg header." |
24e34754 | 291 | " Flags 0x%x instead of 0x%x.", msg->hdr.flags, |
5f6f6664 | 292 | VHOST_USER_REPLY_MASK | VHOST_USER_VERSION); |
9af84c02 MAL |
293 | return -1; |
294 | } | |
295 | ||
296 | return 0; | |
297 | } | |
298 | ||
a7f523c7 GK |
299 | struct vhost_user_read_cb_data { |
300 | struct vhost_dev *dev; | |
301 | VhostUserMsg *msg; | |
302 | GMainLoop *loop; | |
303 | int ret; | |
304 | }; | |
305 | ||
306 | static gboolean vhost_user_read_cb(GIOChannel *source, GIOCondition condition, | |
307 | gpointer opaque) | |
9af84c02 | 308 | { |
a7f523c7 GK |
309 | struct vhost_user_read_cb_data *data = opaque; |
310 | struct vhost_dev *dev = data->dev; | |
311 | VhostUserMsg *msg = data->msg; | |
9af84c02 MAL |
312 | struct vhost_user *u = dev->opaque; |
313 | CharBackend *chr = u->user->chr; | |
314 | uint8_t *p = (uint8_t *) msg; | |
315 | int r, size; | |
316 | ||
317 | if (vhost_user_read_header(dev, msg) < 0) { | |
a7f523c7 GK |
318 | data->ret = -1; |
319 | goto end; | |
5f6f6664 NN |
320 | } |
321 | ||
322 | /* validate message size is sane */ | |
24e34754 | 323 | if (msg->hdr.size > VHOST_USER_PAYLOAD_SIZE) { |
5f6f6664 | 324 | error_report("Failed to read msg header." |
24e34754 | 325 | " Size %d exceeds the maximum %zu.", msg->hdr.size, |
5f6f6664 | 326 | VHOST_USER_PAYLOAD_SIZE); |
a7f523c7 GK |
327 | data->ret = -1; |
328 | goto end; | |
5f6f6664 NN |
329 | } |
330 | ||
24e34754 | 331 | if (msg->hdr.size) { |
5f6f6664 | 332 | p += VHOST_USER_HDR_SIZE; |
24e34754 | 333 | size = msg->hdr.size; |
5f6f6664 NN |
334 | r = qemu_chr_fe_read_all(chr, p, size); |
335 | if (r != size) { | |
336 | error_report("Failed to read msg payload." | |
24e34754 | 337 | " Read %d instead of %d.", r, msg->hdr.size); |
a7f523c7 GK |
338 | data->ret = -1; |
339 | goto end; | |
5f6f6664 NN |
340 | } |
341 | } | |
342 | ||
a7f523c7 GK |
343 | end: |
344 | g_main_loop_quit(data->loop); | |
345 | return G_SOURCE_REMOVE; | |
346 | } | |
347 | ||
db8a3772 GK |
348 | static gboolean slave_read(QIOChannel *ioc, GIOCondition condition, |
349 | gpointer opaque); | |
350 | ||
351 | /* | |
352 | * This updates the read handler to use a new event loop context. | |
353 | * Event sources are removed from the previous context : this ensures | |
354 | * that events detected in the previous context are purged. They will | |
355 | * be re-detected and processed in the new context. | |
356 | */ | |
357 | static void slave_update_read_handler(struct vhost_dev *dev, | |
358 | GMainContext *ctxt) | |
359 | { | |
360 | struct vhost_user *u = dev->opaque; | |
361 | ||
362 | if (!u->slave_ioc) { | |
363 | return; | |
364 | } | |
365 | ||
366 | if (u->slave_src) { | |
367 | g_source_destroy(u->slave_src); | |
368 | g_source_unref(u->slave_src); | |
369 | } | |
370 | ||
371 | u->slave_src = qio_channel_add_watch_source(u->slave_ioc, | |
372 | G_IO_IN | G_IO_HUP, | |
373 | slave_read, dev, NULL, | |
374 | ctxt); | |
375 | } | |
376 | ||
a7f523c7 GK |
377 | static int vhost_user_read(struct vhost_dev *dev, VhostUserMsg *msg) |
378 | { | |
379 | struct vhost_user *u = dev->opaque; | |
380 | CharBackend *chr = u->user->chr; | |
381 | GMainContext *prev_ctxt = chr->chr->gcontext; | |
382 | GMainContext *ctxt = g_main_context_new(); | |
383 | GMainLoop *loop = g_main_loop_new(ctxt, FALSE); | |
384 | struct vhost_user_read_cb_data data = { | |
385 | .dev = dev, | |
386 | .loop = loop, | |
387 | .msg = msg, | |
388 | .ret = 0 | |
389 | }; | |
390 | ||
391 | /* | |
392 | * We want to be able to monitor the slave channel fd while waiting | |
393 | * for chr I/O. This requires an event loop, but we can't nest the | |
394 | * one to which chr is currently attached : its fd handlers might not | |
395 | * be prepared for re-entrancy. So we create a new one and switch chr | |
396 | * to use it. | |
397 | */ | |
db8a3772 | 398 | slave_update_read_handler(dev, ctxt); |
a7f523c7 GK |
399 | qemu_chr_be_update_read_handlers(chr->chr, ctxt); |
400 | qemu_chr_fe_add_watch(chr, G_IO_IN | G_IO_HUP, vhost_user_read_cb, &data); | |
401 | ||
402 | g_main_loop_run(loop); | |
403 | ||
404 | /* | |
405 | * Restore the previous event loop context. This also destroys/recreates | |
406 | * event sources : this guarantees that all pending events in the original | |
407 | * context that have been processed by the nested loop are purged. | |
408 | */ | |
409 | qemu_chr_be_update_read_handlers(chr->chr, prev_ctxt); | |
db8a3772 | 410 | slave_update_read_handler(dev, NULL); |
a7f523c7 GK |
411 | |
412 | g_main_loop_unref(loop); | |
413 | g_main_context_unref(ctxt); | |
414 | ||
415 | return data.ret; | |
5f6f6664 NN |
416 | } |
417 | ||
ca525ce5 | 418 | static int process_message_reply(struct vhost_dev *dev, |
3cf7daf8 | 419 | const VhostUserMsg *msg) |
ca525ce5 | 420 | { |
60cd1102 | 421 | VhostUserMsg msg_reply; |
ca525ce5 | 422 | |
24e34754 | 423 | if ((msg->hdr.flags & VHOST_USER_NEED_REPLY_MASK) == 0) { |
60cd1102 ZY |
424 | return 0; |
425 | } | |
426 | ||
427 | if (vhost_user_read(dev, &msg_reply) < 0) { | |
ca525ce5 PS |
428 | return -1; |
429 | } | |
430 | ||
24e34754 | 431 | if (msg_reply.hdr.request != msg->hdr.request) { |
ca525ce5 PS |
432 | error_report("Received unexpected msg type." |
433 | "Expected %d received %d", | |
24e34754 | 434 | msg->hdr.request, msg_reply.hdr.request); |
ca525ce5 PS |
435 | return -1; |
436 | } | |
437 | ||
60cd1102 | 438 | return msg_reply.payload.u64 ? -1 : 0; |
ca525ce5 PS |
439 | } |
440 | ||
21e70425 MAL |
441 | static bool vhost_user_one_time_request(VhostUserRequest request) |
442 | { | |
443 | switch (request) { | |
444 | case VHOST_USER_SET_OWNER: | |
60915dc4 | 445 | case VHOST_USER_RESET_OWNER: |
21e70425 MAL |
446 | case VHOST_USER_SET_MEM_TABLE: |
447 | case VHOST_USER_GET_QUEUE_NUM: | |
c5f048d8 | 448 | case VHOST_USER_NET_SET_MTU: |
21e70425 MAL |
449 | return true; |
450 | default: | |
451 | return false; | |
452 | } | |
453 | } | |
454 | ||
455 | /* most non-init callers ignore the error */ | |
5f6f6664 NN |
456 | static int vhost_user_write(struct vhost_dev *dev, VhostUserMsg *msg, |
457 | int *fds, int fd_num) | |
458 | { | |
2152f3fe | 459 | struct vhost_user *u = dev->opaque; |
4d0cf552 | 460 | CharBackend *chr = u->user->chr; |
24e34754 | 461 | int ret, size = VHOST_USER_HDR_SIZE + msg->hdr.size; |
5f6f6664 | 462 | |
21e70425 MAL |
463 | /* |
464 | * For non-vring specific requests, like VHOST_USER_SET_MEM_TABLE, | |
465 | * we just need send it once in the first time. For later such | |
466 | * request, we just ignore it. | |
467 | */ | |
24e34754 MT |
468 | if (vhost_user_one_time_request(msg->hdr.request) && dev->vq_index != 0) { |
469 | msg->hdr.flags &= ~VHOST_USER_NEED_REPLY_MASK; | |
21e70425 MAL |
470 | return 0; |
471 | } | |
472 | ||
6fab2f3f | 473 | if (qemu_chr_fe_set_msgfds(chr, fds, fd_num) < 0) { |
f6b85710 | 474 | error_report("Failed to set msg fds."); |
6fab2f3f MAL |
475 | return -1; |
476 | } | |
5f6f6664 | 477 | |
f6b85710 MAL |
478 | ret = qemu_chr_fe_write_all(chr, (const uint8_t *) msg, size); |
479 | if (ret != size) { | |
480 | error_report("Failed to write msg." | |
481 | " Wrote %d instead of %d.", ret, size); | |
482 | return -1; | |
483 | } | |
484 | ||
485 | return 0; | |
5f6f6664 NN |
486 | } |
487 | ||
bd2e44fe MAL |
488 | int vhost_user_gpu_set_socket(struct vhost_dev *dev, int fd) |
489 | { | |
490 | VhostUserMsg msg = { | |
491 | .hdr.request = VHOST_USER_GPU_SET_SOCKET, | |
492 | .hdr.flags = VHOST_USER_VERSION, | |
493 | }; | |
494 | ||
495 | return vhost_user_write(dev, &msg, &fd, 1); | |
496 | } | |
497 | ||
21e70425 MAL |
498 | static int vhost_user_set_log_base(struct vhost_dev *dev, uint64_t base, |
499 | struct vhost_log *log) | |
b931bfbf | 500 | { |
27598393 | 501 | int fds[VHOST_USER_MAX_RAM_SLOTS]; |
21e70425 MAL |
502 | size_t fd_num = 0; |
503 | bool shmfd = virtio_has_feature(dev->protocol_features, | |
504 | VHOST_USER_PROTOCOL_F_LOG_SHMFD); | |
505 | VhostUserMsg msg = { | |
24e34754 MT |
506 | .hdr.request = VHOST_USER_SET_LOG_BASE, |
507 | .hdr.flags = VHOST_USER_VERSION, | |
48854f57 | 508 | .payload.log.mmap_size = log->size * sizeof(*(log->log)), |
2b8819c6 | 509 | .payload.log.mmap_offset = 0, |
24e34754 | 510 | .hdr.size = sizeof(msg.payload.log), |
21e70425 MAL |
511 | }; |
512 | ||
513 | if (shmfd && log->fd != -1) { | |
514 | fds[fd_num++] = log->fd; | |
515 | } | |
516 | ||
c4843a45 MAL |
517 | if (vhost_user_write(dev, &msg, fds, fd_num) < 0) { |
518 | return -1; | |
519 | } | |
21e70425 MAL |
520 | |
521 | if (shmfd) { | |
24e34754 | 522 | msg.hdr.size = 0; |
21e70425 | 523 | if (vhost_user_read(dev, &msg) < 0) { |
c4843a45 | 524 | return -1; |
21e70425 MAL |
525 | } |
526 | ||
24e34754 | 527 | if (msg.hdr.request != VHOST_USER_SET_LOG_BASE) { |
21e70425 MAL |
528 | error_report("Received unexpected msg type. " |
529 | "Expected %d received %d", | |
24e34754 | 530 | VHOST_USER_SET_LOG_BASE, msg.hdr.request); |
21e70425 MAL |
531 | return -1; |
532 | } | |
b931bfbf | 533 | } |
21e70425 MAL |
534 | |
535 | return 0; | |
b931bfbf CO |
536 | } |
537 | ||
23374a84 RN |
538 | static MemoryRegion *vhost_user_get_mr_data(uint64_t addr, ram_addr_t *offset, |
539 | int *fd) | |
540 | { | |
541 | MemoryRegion *mr; | |
542 | ||
543 | assert((uintptr_t)addr == addr); | |
544 | mr = memory_region_from_host((void *)(uintptr_t)addr, offset); | |
545 | *fd = memory_region_get_fd(mr); | |
546 | ||
547 | return mr; | |
548 | } | |
549 | ||
ece99091 | 550 | static void vhost_user_fill_msg_region(VhostUserMemoryRegion *dst, |
8d193715 RN |
551 | struct vhost_memory_region *src, |
552 | uint64_t mmap_offset) | |
ece99091 RN |
553 | { |
554 | assert(src != NULL && dst != NULL); | |
555 | dst->userspace_addr = src->userspace_addr; | |
556 | dst->memory_size = src->memory_size; | |
557 | dst->guest_phys_addr = src->guest_phys_addr; | |
8d193715 | 558 | dst->mmap_offset = mmap_offset; |
ece99091 RN |
559 | } |
560 | ||
2d9da9df RN |
561 | static int vhost_user_fill_set_mem_table_msg(struct vhost_user *u, |
562 | struct vhost_dev *dev, | |
563 | VhostUserMsg *msg, | |
564 | int *fds, size_t *fd_num, | |
565 | bool track_ramblocks) | |
566 | { | |
567 | int i, fd; | |
568 | ram_addr_t offset; | |
569 | MemoryRegion *mr; | |
570 | struct vhost_memory_region *reg; | |
ece99091 | 571 | VhostUserMemoryRegion region_buffer; |
2d9da9df RN |
572 | |
573 | msg->hdr.request = VHOST_USER_SET_MEM_TABLE; | |
574 | ||
575 | for (i = 0; i < dev->mem->nregions; ++i) { | |
576 | reg = dev->mem->regions + i; | |
577 | ||
23374a84 | 578 | mr = vhost_user_get_mr_data(reg->userspace_addr, &offset, &fd); |
2d9da9df RN |
579 | if (fd > 0) { |
580 | if (track_ramblocks) { | |
27598393 | 581 | assert(*fd_num < VHOST_MEMORY_BASELINE_NREGIONS); |
2d9da9df RN |
582 | trace_vhost_user_set_mem_table_withfd(*fd_num, mr->name, |
583 | reg->memory_size, | |
584 | reg->guest_phys_addr, | |
585 | reg->userspace_addr, | |
586 | offset); | |
587 | u->region_rb_offset[i] = offset; | |
588 | u->region_rb[i] = mr->ram_block; | |
27598393 | 589 | } else if (*fd_num == VHOST_MEMORY_BASELINE_NREGIONS) { |
2d9da9df RN |
590 | error_report("Failed preparing vhost-user memory table msg"); |
591 | return -1; | |
592 | } | |
8d193715 | 593 | vhost_user_fill_msg_region(®ion_buffer, reg, offset); |
ece99091 | 594 | msg->payload.memory.regions[*fd_num] = region_buffer; |
2d9da9df RN |
595 | fds[(*fd_num)++] = fd; |
596 | } else if (track_ramblocks) { | |
597 | u->region_rb_offset[i] = 0; | |
598 | u->region_rb[i] = NULL; | |
599 | } | |
600 | } | |
601 | ||
602 | msg->payload.memory.nregions = *fd_num; | |
603 | ||
604 | if (!*fd_num) { | |
605 | error_report("Failed initializing vhost-user memory map, " | |
606 | "consider using -object memory-backend-file share=on"); | |
607 | return -1; | |
608 | } | |
609 | ||
610 | msg->hdr.size = sizeof(msg->payload.memory.nregions); | |
611 | msg->hdr.size += sizeof(msg->payload.memory.padding); | |
612 | msg->hdr.size += *fd_num * sizeof(VhostUserMemoryRegion); | |
613 | ||
614 | return 1; | |
615 | } | |
616 | ||
f1aeb14b RN |
617 | static inline bool reg_equal(struct vhost_memory_region *shadow_reg, |
618 | struct vhost_memory_region *vdev_reg) | |
619 | { | |
620 | return shadow_reg->guest_phys_addr == vdev_reg->guest_phys_addr && | |
621 | shadow_reg->userspace_addr == vdev_reg->userspace_addr && | |
622 | shadow_reg->memory_size == vdev_reg->memory_size; | |
623 | } | |
624 | ||
625 | static void scrub_shadow_regions(struct vhost_dev *dev, | |
626 | struct scrub_regions *add_reg, | |
627 | int *nr_add_reg, | |
628 | struct scrub_regions *rem_reg, | |
629 | int *nr_rem_reg, uint64_t *shadow_pcb, | |
630 | bool track_ramblocks) | |
631 | { | |
632 | struct vhost_user *u = dev->opaque; | |
27598393 | 633 | bool found[VHOST_USER_MAX_RAM_SLOTS] = {}; |
f1aeb14b RN |
634 | struct vhost_memory_region *reg, *shadow_reg; |
635 | int i, j, fd, add_idx = 0, rm_idx = 0, fd_num = 0; | |
636 | ram_addr_t offset; | |
637 | MemoryRegion *mr; | |
638 | bool matching; | |
639 | ||
640 | /* | |
641 | * Find memory regions present in our shadow state which are not in | |
642 | * the device's current memory state. | |
643 | * | |
644 | * Mark regions in both the shadow and device state as "found". | |
645 | */ | |
646 | for (i = 0; i < u->num_shadow_regions; i++) { | |
647 | shadow_reg = &u->shadow_regions[i]; | |
648 | matching = false; | |
649 | ||
650 | for (j = 0; j < dev->mem->nregions; j++) { | |
651 | reg = &dev->mem->regions[j]; | |
652 | ||
653 | mr = vhost_user_get_mr_data(reg->userspace_addr, &offset, &fd); | |
654 | ||
655 | if (reg_equal(shadow_reg, reg)) { | |
656 | matching = true; | |
657 | found[j] = true; | |
658 | if (track_ramblocks) { | |
659 | /* | |
660 | * Reset postcopy client bases, region_rb, and | |
661 | * region_rb_offset in case regions are removed. | |
662 | */ | |
663 | if (fd > 0) { | |
664 | u->region_rb_offset[j] = offset; | |
665 | u->region_rb[j] = mr->ram_block; | |
666 | shadow_pcb[j] = u->postcopy_client_bases[i]; | |
667 | } else { | |
668 | u->region_rb_offset[j] = 0; | |
669 | u->region_rb[j] = NULL; | |
670 | } | |
671 | } | |
672 | break; | |
673 | } | |
674 | } | |
675 | ||
676 | /* | |
677 | * If the region was not found in the current device memory state | |
678 | * create an entry for it in the removed list. | |
679 | */ | |
680 | if (!matching) { | |
681 | rem_reg[rm_idx].region = shadow_reg; | |
682 | rem_reg[rm_idx++].reg_idx = i; | |
683 | } | |
684 | } | |
685 | ||
686 | /* | |
687 | * For regions not marked "found", create entries in the added list. | |
688 | * | |
689 | * Note their indexes in the device memory state and the indexes of their | |
690 | * file descriptors. | |
691 | */ | |
692 | for (i = 0; i < dev->mem->nregions; i++) { | |
693 | reg = &dev->mem->regions[i]; | |
8b616bee | 694 | vhost_user_get_mr_data(reg->userspace_addr, &offset, &fd); |
f1aeb14b RN |
695 | if (fd > 0) { |
696 | ++fd_num; | |
697 | } | |
698 | ||
699 | /* | |
700 | * If the region was in both the shadow and device state we don't | |
701 | * need to send a VHOST_USER_ADD_MEM_REG message for it. | |
702 | */ | |
703 | if (found[i]) { | |
704 | continue; | |
705 | } | |
706 | ||
707 | add_reg[add_idx].region = reg; | |
708 | add_reg[add_idx].reg_idx = i; | |
709 | add_reg[add_idx++].fd_idx = fd_num; | |
710 | } | |
711 | *nr_rem_reg = rm_idx; | |
712 | *nr_add_reg = add_idx; | |
713 | ||
714 | return; | |
715 | } | |
716 | ||
717 | static int send_remove_regions(struct vhost_dev *dev, | |
718 | struct scrub_regions *remove_reg, | |
719 | int nr_rem_reg, VhostUserMsg *msg, | |
720 | bool reply_supported) | |
721 | { | |
722 | struct vhost_user *u = dev->opaque; | |
723 | struct vhost_memory_region *shadow_reg; | |
724 | int i, fd, shadow_reg_idx, ret; | |
725 | ram_addr_t offset; | |
726 | VhostUserMemoryRegion region_buffer; | |
727 | ||
728 | /* | |
729 | * The regions in remove_reg appear in the same order they do in the | |
730 | * shadow table. Therefore we can minimize memory copies by iterating | |
731 | * through remove_reg backwards. | |
732 | */ | |
733 | for (i = nr_rem_reg - 1; i >= 0; i--) { | |
734 | shadow_reg = remove_reg[i].region; | |
735 | shadow_reg_idx = remove_reg[i].reg_idx; | |
736 | ||
737 | vhost_user_get_mr_data(shadow_reg->userspace_addr, &offset, &fd); | |
738 | ||
739 | if (fd > 0) { | |
740 | msg->hdr.request = VHOST_USER_REM_MEM_REG; | |
8d193715 | 741 | vhost_user_fill_msg_region(®ion_buffer, shadow_reg, 0); |
f1aeb14b RN |
742 | msg->payload.mem_reg.region = region_buffer; |
743 | ||
744 | if (vhost_user_write(dev, msg, &fd, 1) < 0) { | |
745 | return -1; | |
746 | } | |
747 | ||
748 | if (reply_supported) { | |
749 | ret = process_message_reply(dev, msg); | |
750 | if (ret) { | |
751 | return ret; | |
752 | } | |
753 | } | |
754 | } | |
755 | ||
756 | /* | |
757 | * At this point we know the backend has unmapped the region. It is now | |
758 | * safe to remove it from the shadow table. | |
759 | */ | |
760 | memmove(&u->shadow_regions[shadow_reg_idx], | |
761 | &u->shadow_regions[shadow_reg_idx + 1], | |
762 | sizeof(struct vhost_memory_region) * | |
4fdecf05 | 763 | (u->num_shadow_regions - shadow_reg_idx - 1)); |
f1aeb14b RN |
764 | u->num_shadow_regions--; |
765 | } | |
766 | ||
767 | return 0; | |
768 | } | |
769 | ||
770 | static int send_add_regions(struct vhost_dev *dev, | |
771 | struct scrub_regions *add_reg, int nr_add_reg, | |
772 | VhostUserMsg *msg, uint64_t *shadow_pcb, | |
773 | bool reply_supported, bool track_ramblocks) | |
774 | { | |
775 | struct vhost_user *u = dev->opaque; | |
776 | int i, fd, ret, reg_idx, reg_fd_idx; | |
777 | struct vhost_memory_region *reg; | |
778 | MemoryRegion *mr; | |
779 | ram_addr_t offset; | |
780 | VhostUserMsg msg_reply; | |
781 | VhostUserMemoryRegion region_buffer; | |
782 | ||
783 | for (i = 0; i < nr_add_reg; i++) { | |
784 | reg = add_reg[i].region; | |
785 | reg_idx = add_reg[i].reg_idx; | |
786 | reg_fd_idx = add_reg[i].fd_idx; | |
787 | ||
788 | mr = vhost_user_get_mr_data(reg->userspace_addr, &offset, &fd); | |
789 | ||
790 | if (fd > 0) { | |
791 | if (track_ramblocks) { | |
792 | trace_vhost_user_set_mem_table_withfd(reg_fd_idx, mr->name, | |
793 | reg->memory_size, | |
794 | reg->guest_phys_addr, | |
795 | reg->userspace_addr, | |
796 | offset); | |
797 | u->region_rb_offset[reg_idx] = offset; | |
798 | u->region_rb[reg_idx] = mr->ram_block; | |
799 | } | |
800 | msg->hdr.request = VHOST_USER_ADD_MEM_REG; | |
8d193715 | 801 | vhost_user_fill_msg_region(®ion_buffer, reg, offset); |
f1aeb14b | 802 | msg->payload.mem_reg.region = region_buffer; |
f1aeb14b RN |
803 | |
804 | if (vhost_user_write(dev, msg, &fd, 1) < 0) { | |
805 | return -1; | |
806 | } | |
807 | ||
808 | if (track_ramblocks) { | |
809 | uint64_t reply_gpa; | |
810 | ||
811 | if (vhost_user_read(dev, &msg_reply) < 0) { | |
812 | return -1; | |
813 | } | |
814 | ||
815 | reply_gpa = msg_reply.payload.mem_reg.region.guest_phys_addr; | |
816 | ||
817 | if (msg_reply.hdr.request != VHOST_USER_ADD_MEM_REG) { | |
818 | error_report("%s: Received unexpected msg type." | |
819 | "Expected %d received %d", __func__, | |
820 | VHOST_USER_ADD_MEM_REG, | |
821 | msg_reply.hdr.request); | |
822 | return -1; | |
823 | } | |
824 | ||
825 | /* | |
826 | * We're using the same structure, just reusing one of the | |
827 | * fields, so it should be the same size. | |
828 | */ | |
829 | if (msg_reply.hdr.size != msg->hdr.size) { | |
830 | error_report("%s: Unexpected size for postcopy reply " | |
831 | "%d vs %d", __func__, msg_reply.hdr.size, | |
832 | msg->hdr.size); | |
833 | return -1; | |
834 | } | |
835 | ||
836 | /* Get the postcopy client base from the backend's reply. */ | |
837 | if (reply_gpa == dev->mem->regions[reg_idx].guest_phys_addr) { | |
838 | shadow_pcb[reg_idx] = | |
839 | msg_reply.payload.mem_reg.region.userspace_addr; | |
840 | trace_vhost_user_set_mem_table_postcopy( | |
841 | msg_reply.payload.mem_reg.region.userspace_addr, | |
842 | msg->payload.mem_reg.region.userspace_addr, | |
843 | reg_fd_idx, reg_idx); | |
844 | } else { | |
845 | error_report("%s: invalid postcopy reply for region. " | |
846 | "Got guest physical address %" PRIX64 ", expected " | |
847 | "%" PRIX64, __func__, reply_gpa, | |
848 | dev->mem->regions[reg_idx].guest_phys_addr); | |
849 | return -1; | |
850 | } | |
851 | } else if (reply_supported) { | |
852 | ret = process_message_reply(dev, msg); | |
853 | if (ret) { | |
854 | return ret; | |
855 | } | |
856 | } | |
857 | } else if (track_ramblocks) { | |
858 | u->region_rb_offset[reg_idx] = 0; | |
859 | u->region_rb[reg_idx] = NULL; | |
860 | } | |
861 | ||
862 | /* | |
863 | * At this point, we know the backend has mapped in the new | |
864 | * region, if the region has a valid file descriptor. | |
865 | * | |
866 | * The region should now be added to the shadow table. | |
867 | */ | |
868 | u->shadow_regions[u->num_shadow_regions].guest_phys_addr = | |
869 | reg->guest_phys_addr; | |
870 | u->shadow_regions[u->num_shadow_regions].userspace_addr = | |
871 | reg->userspace_addr; | |
872 | u->shadow_regions[u->num_shadow_regions].memory_size = | |
873 | reg->memory_size; | |
874 | u->num_shadow_regions++; | |
875 | } | |
876 | ||
877 | return 0; | |
878 | } | |
879 | ||
880 | static int vhost_user_add_remove_regions(struct vhost_dev *dev, | |
881 | VhostUserMsg *msg, | |
882 | bool reply_supported, | |
883 | bool track_ramblocks) | |
884 | { | |
885 | struct vhost_user *u = dev->opaque; | |
27598393 RN |
886 | struct scrub_regions add_reg[VHOST_USER_MAX_RAM_SLOTS]; |
887 | struct scrub_regions rem_reg[VHOST_USER_MAX_RAM_SLOTS]; | |
888 | uint64_t shadow_pcb[VHOST_USER_MAX_RAM_SLOTS] = {}; | |
f1aeb14b RN |
889 | int nr_add_reg, nr_rem_reg; |
890 | ||
3009edff | 891 | msg->hdr.size = sizeof(msg->payload.mem_reg); |
f1aeb14b RN |
892 | |
893 | /* Find the regions which need to be removed or added. */ | |
894 | scrub_shadow_regions(dev, add_reg, &nr_add_reg, rem_reg, &nr_rem_reg, | |
895 | shadow_pcb, track_ramblocks); | |
896 | ||
897 | if (nr_rem_reg && send_remove_regions(dev, rem_reg, nr_rem_reg, msg, | |
898 | reply_supported) < 0) | |
899 | { | |
900 | goto err; | |
901 | } | |
902 | ||
903 | if (nr_add_reg && send_add_regions(dev, add_reg, nr_add_reg, msg, | |
904 | shadow_pcb, reply_supported, track_ramblocks) < 0) | |
905 | { | |
906 | goto err; | |
907 | } | |
908 | ||
909 | if (track_ramblocks) { | |
910 | memcpy(u->postcopy_client_bases, shadow_pcb, | |
27598393 | 911 | sizeof(uint64_t) * VHOST_USER_MAX_RAM_SLOTS); |
f1aeb14b RN |
912 | /* |
913 | * Now we've registered this with the postcopy code, we ack to the | |
914 | * client, because now we're in the position to be able to deal with | |
915 | * any faults it generates. | |
916 | */ | |
917 | /* TODO: Use this for failure cases as well with a bad value. */ | |
918 | msg->hdr.size = sizeof(msg->payload.u64); | |
919 | msg->payload.u64 = 0; /* OK */ | |
920 | ||
921 | if (vhost_user_write(dev, msg, NULL, 0) < 0) { | |
922 | return -1; | |
923 | } | |
924 | } | |
925 | ||
926 | return 0; | |
927 | ||
928 | err: | |
929 | if (track_ramblocks) { | |
930 | memcpy(u->postcopy_client_bases, shadow_pcb, | |
27598393 | 931 | sizeof(uint64_t) * VHOST_USER_MAX_RAM_SLOTS); |
f1aeb14b RN |
932 | } |
933 | ||
934 | return -1; | |
935 | } | |
936 | ||
55d754b3 | 937 | static int vhost_user_set_mem_table_postcopy(struct vhost_dev *dev, |
f1aeb14b RN |
938 | struct vhost_memory *mem, |
939 | bool reply_supported, | |
940 | bool config_mem_slots) | |
55d754b3 | 941 | { |
9bb38019 | 942 | struct vhost_user *u = dev->opaque; |
27598393 | 943 | int fds[VHOST_MEMORY_BASELINE_NREGIONS]; |
55d754b3 | 944 | size_t fd_num = 0; |
9bb38019 DDAG |
945 | VhostUserMsg msg_reply; |
946 | int region_i, msg_i; | |
947 | ||
55d754b3 | 948 | VhostUserMsg msg = { |
55d754b3 DDAG |
949 | .hdr.flags = VHOST_USER_VERSION, |
950 | }; | |
951 | ||
905125d0 DDAG |
952 | if (u->region_rb_len < dev->mem->nregions) { |
953 | u->region_rb = g_renew(RAMBlock*, u->region_rb, dev->mem->nregions); | |
954 | u->region_rb_offset = g_renew(ram_addr_t, u->region_rb_offset, | |
955 | dev->mem->nregions); | |
956 | memset(&(u->region_rb[u->region_rb_len]), '\0', | |
957 | sizeof(RAMBlock *) * (dev->mem->nregions - u->region_rb_len)); | |
958 | memset(&(u->region_rb_offset[u->region_rb_len]), '\0', | |
959 | sizeof(ram_addr_t) * (dev->mem->nregions - u->region_rb_len)); | |
960 | u->region_rb_len = dev->mem->nregions; | |
961 | } | |
962 | ||
f1aeb14b RN |
963 | if (config_mem_slots) { |
964 | if (vhost_user_add_remove_regions(dev, &msg, reply_supported, | |
2d9da9df | 965 | true) < 0) { |
f1aeb14b RN |
966 | return -1; |
967 | } | |
968 | } else { | |
969 | if (vhost_user_fill_set_mem_table_msg(u, dev, &msg, fds, &fd_num, | |
970 | true) < 0) { | |
971 | return -1; | |
972 | } | |
55d754b3 | 973 | |
f1aeb14b RN |
974 | if (vhost_user_write(dev, &msg, fds, fd_num) < 0) { |
975 | return -1; | |
976 | } | |
55d754b3 | 977 | |
f1aeb14b RN |
978 | if (vhost_user_read(dev, &msg_reply) < 0) { |
979 | return -1; | |
980 | } | |
9bb38019 | 981 | |
f1aeb14b RN |
982 | if (msg_reply.hdr.request != VHOST_USER_SET_MEM_TABLE) { |
983 | error_report("%s: Received unexpected msg type." | |
984 | "Expected %d received %d", __func__, | |
985 | VHOST_USER_SET_MEM_TABLE, msg_reply.hdr.request); | |
986 | return -1; | |
987 | } | |
9bb38019 | 988 | |
f1aeb14b RN |
989 | /* |
990 | * We're using the same structure, just reusing one of the | |
991 | * fields, so it should be the same size. | |
992 | */ | |
993 | if (msg_reply.hdr.size != msg.hdr.size) { | |
994 | error_report("%s: Unexpected size for postcopy reply " | |
995 | "%d vs %d", __func__, msg_reply.hdr.size, | |
996 | msg.hdr.size); | |
997 | return -1; | |
998 | } | |
999 | ||
1000 | memset(u->postcopy_client_bases, 0, | |
27598393 | 1001 | sizeof(uint64_t) * VHOST_USER_MAX_RAM_SLOTS); |
f1aeb14b RN |
1002 | |
1003 | /* | |
1004 | * They're in the same order as the regions that were sent | |
1005 | * but some of the regions were skipped (above) if they | |
1006 | * didn't have fd's | |
1007 | */ | |
1008 | for (msg_i = 0, region_i = 0; | |
1009 | region_i < dev->mem->nregions; | |
1010 | region_i++) { | |
1011 | if (msg_i < fd_num && | |
1012 | msg_reply.payload.memory.regions[msg_i].guest_phys_addr == | |
1013 | dev->mem->regions[region_i].guest_phys_addr) { | |
1014 | u->postcopy_client_bases[region_i] = | |
1015 | msg_reply.payload.memory.regions[msg_i].userspace_addr; | |
1016 | trace_vhost_user_set_mem_table_postcopy( | |
1017 | msg_reply.payload.memory.regions[msg_i].userspace_addr, | |
1018 | msg.payload.memory.regions[msg_i].userspace_addr, | |
1019 | msg_i, region_i); | |
1020 | msg_i++; | |
1021 | } | |
1022 | } | |
1023 | if (msg_i != fd_num) { | |
1024 | error_report("%s: postcopy reply not fully consumed " | |
1025 | "%d vs %zd", | |
1026 | __func__, msg_i, fd_num); | |
1027 | return -1; | |
1028 | } | |
1029 | ||
1030 | /* | |
1031 | * Now we've registered this with the postcopy code, we ack to the | |
1032 | * client, because now we're in the position to be able to deal | |
1033 | * with any faults it generates. | |
1034 | */ | |
1035 | /* TODO: Use this for failure cases as well with a bad value. */ | |
1036 | msg.hdr.size = sizeof(msg.payload.u64); | |
1037 | msg.payload.u64 = 0; /* OK */ | |
1038 | if (vhost_user_write(dev, &msg, NULL, 0) < 0) { | |
1039 | return -1; | |
9bb38019 | 1040 | } |
9bb38019 DDAG |
1041 | } |
1042 | ||
55d754b3 DDAG |
1043 | return 0; |
1044 | } | |
1045 | ||
94c9cb31 MT |
1046 | static int vhost_user_set_mem_table(struct vhost_dev *dev, |
1047 | struct vhost_memory *mem) | |
1048 | { | |
55d754b3 | 1049 | struct vhost_user *u = dev->opaque; |
27598393 | 1050 | int fds[VHOST_MEMORY_BASELINE_NREGIONS]; |
94c9cb31 | 1051 | size_t fd_num = 0; |
55d754b3 | 1052 | bool do_postcopy = u->postcopy_listen && u->postcopy_fd.handler; |
94c9cb31 | 1053 | bool reply_supported = virtio_has_feature(dev->protocol_features, |
5ce43896 | 1054 | VHOST_USER_PROTOCOL_F_REPLY_ACK); |
f1aeb14b RN |
1055 | bool config_mem_slots = |
1056 | virtio_has_feature(dev->protocol_features, | |
1057 | VHOST_USER_PROTOCOL_F_CONFIGURE_MEM_SLOTS); | |
94c9cb31 | 1058 | |
55d754b3 | 1059 | if (do_postcopy) { |
f1aeb14b RN |
1060 | /* |
1061 | * Postcopy has enough differences that it's best done in it's own | |
55d754b3 DDAG |
1062 | * version |
1063 | */ | |
f1aeb14b RN |
1064 | return vhost_user_set_mem_table_postcopy(dev, mem, reply_supported, |
1065 | config_mem_slots); | |
55d754b3 DDAG |
1066 | } |
1067 | ||
94c9cb31 | 1068 | VhostUserMsg msg = { |
24e34754 | 1069 | .hdr.flags = VHOST_USER_VERSION, |
94c9cb31 MT |
1070 | }; |
1071 | ||
1072 | if (reply_supported) { | |
24e34754 | 1073 | msg.hdr.flags |= VHOST_USER_NEED_REPLY_MASK; |
94c9cb31 MT |
1074 | } |
1075 | ||
f1aeb14b RN |
1076 | if (config_mem_slots) { |
1077 | if (vhost_user_add_remove_regions(dev, &msg, reply_supported, | |
2d9da9df | 1078 | false) < 0) { |
f1aeb14b RN |
1079 | return -1; |
1080 | } | |
1081 | } else { | |
1082 | if (vhost_user_fill_set_mem_table_msg(u, dev, &msg, fds, &fd_num, | |
1083 | false) < 0) { | |
1084 | return -1; | |
1085 | } | |
1086 | if (vhost_user_write(dev, &msg, fds, fd_num) < 0) { | |
1087 | return -1; | |
1088 | } | |
94c9cb31 | 1089 | |
f1aeb14b RN |
1090 | if (reply_supported) { |
1091 | return process_message_reply(dev, &msg); | |
1092 | } | |
94c9cb31 MT |
1093 | } |
1094 | ||
1095 | return 0; | |
1096 | } | |
1097 | ||
21e70425 MAL |
1098 | static int vhost_user_set_vring_addr(struct vhost_dev *dev, |
1099 | struct vhost_vring_addr *addr) | |
1100 | { | |
1101 | VhostUserMsg msg = { | |
24e34754 MT |
1102 | .hdr.request = VHOST_USER_SET_VRING_ADDR, |
1103 | .hdr.flags = VHOST_USER_VERSION, | |
7f4a930e | 1104 | .payload.addr = *addr, |
24e34754 | 1105 | .hdr.size = sizeof(msg.payload.addr), |
21e70425 | 1106 | }; |
5f6f6664 | 1107 | |
c4843a45 MAL |
1108 | if (vhost_user_write(dev, &msg, NULL, 0) < 0) { |
1109 | return -1; | |
1110 | } | |
5f6f6664 | 1111 | |
21e70425 MAL |
1112 | return 0; |
1113 | } | |
5f6f6664 | 1114 | |
21e70425 MAL |
1115 | static int vhost_user_set_vring_endian(struct vhost_dev *dev, |
1116 | struct vhost_vring_state *ring) | |
1117 | { | |
5df04f17 FF |
1118 | bool cross_endian = virtio_has_feature(dev->protocol_features, |
1119 | VHOST_USER_PROTOCOL_F_CROSS_ENDIAN); | |
1120 | VhostUserMsg msg = { | |
24e34754 MT |
1121 | .hdr.request = VHOST_USER_SET_VRING_ENDIAN, |
1122 | .hdr.flags = VHOST_USER_VERSION, | |
5df04f17 | 1123 | .payload.state = *ring, |
24e34754 | 1124 | .hdr.size = sizeof(msg.payload.state), |
5df04f17 FF |
1125 | }; |
1126 | ||
1127 | if (!cross_endian) { | |
1128 | error_report("vhost-user trying to send unhandled ioctl"); | |
1129 | return -1; | |
1130 | } | |
1131 | ||
1132 | if (vhost_user_write(dev, &msg, NULL, 0) < 0) { | |
1133 | return -1; | |
1134 | } | |
1135 | ||
1136 | return 0; | |
21e70425 | 1137 | } |
5f6f6664 | 1138 | |
21e70425 MAL |
1139 | static int vhost_set_vring(struct vhost_dev *dev, |
1140 | unsigned long int request, | |
1141 | struct vhost_vring_state *ring) | |
1142 | { | |
1143 | VhostUserMsg msg = { | |
24e34754 MT |
1144 | .hdr.request = request, |
1145 | .hdr.flags = VHOST_USER_VERSION, | |
7f4a930e | 1146 | .payload.state = *ring, |
24e34754 | 1147 | .hdr.size = sizeof(msg.payload.state), |
21e70425 MAL |
1148 | }; |
1149 | ||
c4843a45 MAL |
1150 | if (vhost_user_write(dev, &msg, NULL, 0) < 0) { |
1151 | return -1; | |
1152 | } | |
21e70425 MAL |
1153 | |
1154 | return 0; | |
1155 | } | |
1156 | ||
1157 | static int vhost_user_set_vring_num(struct vhost_dev *dev, | |
1158 | struct vhost_vring_state *ring) | |
1159 | { | |
1160 | return vhost_set_vring(dev, VHOST_USER_SET_VRING_NUM, ring); | |
1161 | } | |
1162 | ||
44866521 TB |
1163 | static void vhost_user_host_notifier_restore(struct vhost_dev *dev, |
1164 | int queue_idx) | |
1165 | { | |
1166 | struct vhost_user *u = dev->opaque; | |
1167 | VhostUserHostNotifier *n = &u->user->notifier[queue_idx]; | |
1168 | VirtIODevice *vdev = dev->vdev; | |
1169 | ||
1170 | if (n->addr && !n->set) { | |
1171 | virtio_queue_set_host_notifier_mr(vdev, queue_idx, &n->mr, true); | |
1172 | n->set = true; | |
1173 | } | |
1174 | } | |
1175 | ||
1176 | static void vhost_user_host_notifier_remove(struct vhost_dev *dev, | |
1177 | int queue_idx) | |
1178 | { | |
1179 | struct vhost_user *u = dev->opaque; | |
1180 | VhostUserHostNotifier *n = &u->user->notifier[queue_idx]; | |
1181 | VirtIODevice *vdev = dev->vdev; | |
1182 | ||
1183 | if (n->addr && n->set) { | |
1184 | virtio_queue_set_host_notifier_mr(vdev, queue_idx, &n->mr, false); | |
1185 | n->set = false; | |
1186 | } | |
1187 | } | |
1188 | ||
21e70425 MAL |
1189 | static int vhost_user_set_vring_base(struct vhost_dev *dev, |
1190 | struct vhost_vring_state *ring) | |
1191 | { | |
44866521 TB |
1192 | vhost_user_host_notifier_restore(dev, ring->index); |
1193 | ||
21e70425 MAL |
1194 | return vhost_set_vring(dev, VHOST_USER_SET_VRING_BASE, ring); |
1195 | } | |
1196 | ||
1197 | static int vhost_user_set_vring_enable(struct vhost_dev *dev, int enable) | |
1198 | { | |
dc3db6ad | 1199 | int i; |
21e70425 | 1200 | |
923e2d98 | 1201 | if (!virtio_has_feature(dev->features, VHOST_USER_F_PROTOCOL_FEATURES)) { |
5f6f6664 | 1202 | return -1; |
5f6f6664 NN |
1203 | } |
1204 | ||
dc3db6ad MT |
1205 | for (i = 0; i < dev->nvqs; ++i) { |
1206 | struct vhost_vring_state state = { | |
1207 | .index = dev->vq_index + i, | |
1208 | .num = enable, | |
1209 | }; | |
1210 | ||
1211 | vhost_set_vring(dev, VHOST_USER_SET_VRING_ENABLE, &state); | |
1212 | } | |
21e70425 | 1213 | |
dc3db6ad MT |
1214 | return 0; |
1215 | } | |
21e70425 MAL |
1216 | |
1217 | static int vhost_user_get_vring_base(struct vhost_dev *dev, | |
1218 | struct vhost_vring_state *ring) | |
1219 | { | |
1220 | VhostUserMsg msg = { | |
24e34754 MT |
1221 | .hdr.request = VHOST_USER_GET_VRING_BASE, |
1222 | .hdr.flags = VHOST_USER_VERSION, | |
7f4a930e | 1223 | .payload.state = *ring, |
24e34754 | 1224 | .hdr.size = sizeof(msg.payload.state), |
21e70425 MAL |
1225 | }; |
1226 | ||
44866521 TB |
1227 | vhost_user_host_notifier_remove(dev, ring->index); |
1228 | ||
c4843a45 MAL |
1229 | if (vhost_user_write(dev, &msg, NULL, 0) < 0) { |
1230 | return -1; | |
1231 | } | |
21e70425 MAL |
1232 | |
1233 | if (vhost_user_read(dev, &msg) < 0) { | |
c4843a45 | 1234 | return -1; |
5f6f6664 NN |
1235 | } |
1236 | ||
24e34754 | 1237 | if (msg.hdr.request != VHOST_USER_GET_VRING_BASE) { |
21e70425 | 1238 | error_report("Received unexpected msg type. Expected %d received %d", |
24e34754 | 1239 | VHOST_USER_GET_VRING_BASE, msg.hdr.request); |
21e70425 MAL |
1240 | return -1; |
1241 | } | |
5f6f6664 | 1242 | |
24e34754 | 1243 | if (msg.hdr.size != sizeof(msg.payload.state)) { |
21e70425 MAL |
1244 | error_report("Received bad msg size."); |
1245 | return -1; | |
5f6f6664 NN |
1246 | } |
1247 | ||
7f4a930e | 1248 | *ring = msg.payload.state; |
21e70425 | 1249 | |
5f6f6664 NN |
1250 | return 0; |
1251 | } | |
1252 | ||
21e70425 MAL |
1253 | static int vhost_set_vring_file(struct vhost_dev *dev, |
1254 | VhostUserRequest request, | |
1255 | struct vhost_vring_file *file) | |
c2bea314 | 1256 | { |
27598393 | 1257 | int fds[VHOST_USER_MAX_RAM_SLOTS]; |
9a78a5dd | 1258 | size_t fd_num = 0; |
c2bea314 | 1259 | VhostUserMsg msg = { |
24e34754 MT |
1260 | .hdr.request = request, |
1261 | .hdr.flags = VHOST_USER_VERSION, | |
7f4a930e | 1262 | .payload.u64 = file->index & VHOST_USER_VRING_IDX_MASK, |
24e34754 | 1263 | .hdr.size = sizeof(msg.payload.u64), |
c2bea314 MAL |
1264 | }; |
1265 | ||
21e70425 MAL |
1266 | if (ioeventfd_enabled() && file->fd > 0) { |
1267 | fds[fd_num++] = file->fd; | |
1268 | } else { | |
7f4a930e | 1269 | msg.payload.u64 |= VHOST_USER_VRING_NOFD_MASK; |
9a78a5dd MAL |
1270 | } |
1271 | ||
c4843a45 MAL |
1272 | if (vhost_user_write(dev, &msg, fds, fd_num) < 0) { |
1273 | return -1; | |
1274 | } | |
9a78a5dd | 1275 | |
21e70425 MAL |
1276 | return 0; |
1277 | } | |
9a78a5dd | 1278 | |
21e70425 MAL |
1279 | static int vhost_user_set_vring_kick(struct vhost_dev *dev, |
1280 | struct vhost_vring_file *file) | |
1281 | { | |
1282 | return vhost_set_vring_file(dev, VHOST_USER_SET_VRING_KICK, file); | |
1283 | } | |
1284 | ||
1285 | static int vhost_user_set_vring_call(struct vhost_dev *dev, | |
1286 | struct vhost_vring_file *file) | |
1287 | { | |
1288 | return vhost_set_vring_file(dev, VHOST_USER_SET_VRING_CALL, file); | |
1289 | } | |
1290 | ||
1291 | static int vhost_user_set_u64(struct vhost_dev *dev, int request, uint64_t u64) | |
1292 | { | |
1293 | VhostUserMsg msg = { | |
24e34754 MT |
1294 | .hdr.request = request, |
1295 | .hdr.flags = VHOST_USER_VERSION, | |
7f4a930e | 1296 | .payload.u64 = u64, |
24e34754 | 1297 | .hdr.size = sizeof(msg.payload.u64), |
21e70425 MAL |
1298 | }; |
1299 | ||
c4843a45 MAL |
1300 | if (vhost_user_write(dev, &msg, NULL, 0) < 0) { |
1301 | return -1; | |
1302 | } | |
21e70425 MAL |
1303 | |
1304 | return 0; | |
1305 | } | |
1306 | ||
1307 | static int vhost_user_set_features(struct vhost_dev *dev, | |
1308 | uint64_t features) | |
1309 | { | |
1310 | return vhost_user_set_u64(dev, VHOST_USER_SET_FEATURES, features); | |
1311 | } | |
1312 | ||
1313 | static int vhost_user_set_protocol_features(struct vhost_dev *dev, | |
1314 | uint64_t features) | |
1315 | { | |
1316 | return vhost_user_set_u64(dev, VHOST_USER_SET_PROTOCOL_FEATURES, features); | |
1317 | } | |
1318 | ||
1319 | static int vhost_user_get_u64(struct vhost_dev *dev, int request, uint64_t *u64) | |
1320 | { | |
1321 | VhostUserMsg msg = { | |
24e34754 MT |
1322 | .hdr.request = request, |
1323 | .hdr.flags = VHOST_USER_VERSION, | |
21e70425 MAL |
1324 | }; |
1325 | ||
1326 | if (vhost_user_one_time_request(request) && dev->vq_index != 0) { | |
1327 | return 0; | |
9a78a5dd | 1328 | } |
c2bea314 | 1329 | |
c4843a45 MAL |
1330 | if (vhost_user_write(dev, &msg, NULL, 0) < 0) { |
1331 | return -1; | |
1332 | } | |
21e70425 MAL |
1333 | |
1334 | if (vhost_user_read(dev, &msg) < 0) { | |
c4843a45 | 1335 | return -1; |
21e70425 MAL |
1336 | } |
1337 | ||
24e34754 | 1338 | if (msg.hdr.request != request) { |
21e70425 | 1339 | error_report("Received unexpected msg type. Expected %d received %d", |
24e34754 | 1340 | request, msg.hdr.request); |
21e70425 MAL |
1341 | return -1; |
1342 | } | |
1343 | ||
24e34754 | 1344 | if (msg.hdr.size != sizeof(msg.payload.u64)) { |
21e70425 MAL |
1345 | error_report("Received bad msg size."); |
1346 | return -1; | |
1347 | } | |
1348 | ||
7f4a930e | 1349 | *u64 = msg.payload.u64; |
21e70425 MAL |
1350 | |
1351 | return 0; | |
1352 | } | |
1353 | ||
1354 | static int vhost_user_get_features(struct vhost_dev *dev, uint64_t *features) | |
1355 | { | |
f2a6e6c4 KW |
1356 | if (vhost_user_get_u64(dev, VHOST_USER_GET_FEATURES, features) < 0) { |
1357 | return -EPROTO; | |
1358 | } | |
1359 | ||
1360 | return 0; | |
21e70425 MAL |
1361 | } |
1362 | ||
1363 | static int vhost_user_set_owner(struct vhost_dev *dev) | |
1364 | { | |
1365 | VhostUserMsg msg = { | |
24e34754 MT |
1366 | .hdr.request = VHOST_USER_SET_OWNER, |
1367 | .hdr.flags = VHOST_USER_VERSION, | |
21e70425 MAL |
1368 | }; |
1369 | ||
c4843a45 | 1370 | if (vhost_user_write(dev, &msg, NULL, 0) < 0) { |
f2a6e6c4 | 1371 | return -EPROTO; |
c4843a45 | 1372 | } |
21e70425 MAL |
1373 | |
1374 | return 0; | |
1375 | } | |
1376 | ||
6b0eff1a RN |
1377 | static int vhost_user_get_max_memslots(struct vhost_dev *dev, |
1378 | uint64_t *max_memslots) | |
1379 | { | |
1380 | uint64_t backend_max_memslots; | |
1381 | int err; | |
1382 | ||
1383 | err = vhost_user_get_u64(dev, VHOST_USER_GET_MAX_MEM_SLOTS, | |
1384 | &backend_max_memslots); | |
1385 | if (err < 0) { | |
1386 | return err; | |
1387 | } | |
1388 | ||
1389 | *max_memslots = backend_max_memslots; | |
1390 | ||
1391 | return 0; | |
1392 | } | |
1393 | ||
21e70425 MAL |
1394 | static int vhost_user_reset_device(struct vhost_dev *dev) |
1395 | { | |
1396 | VhostUserMsg msg = { | |
24e34754 | 1397 | .hdr.flags = VHOST_USER_VERSION, |
21e70425 MAL |
1398 | }; |
1399 | ||
d91d57e6 RN |
1400 | msg.hdr.request = virtio_has_feature(dev->protocol_features, |
1401 | VHOST_USER_PROTOCOL_F_RESET_DEVICE) | |
1402 | ? VHOST_USER_RESET_DEVICE | |
1403 | : VHOST_USER_RESET_OWNER; | |
1404 | ||
c4843a45 MAL |
1405 | if (vhost_user_write(dev, &msg, NULL, 0) < 0) { |
1406 | return -1; | |
1407 | } | |
21e70425 | 1408 | |
c2bea314 MAL |
1409 | return 0; |
1410 | } | |
1411 | ||
4c3e257b CL |
1412 | static int vhost_user_slave_handle_config_change(struct vhost_dev *dev) |
1413 | { | |
1414 | int ret = -1; | |
1415 | ||
1416 | if (!dev->config_ops) { | |
1417 | return -1; | |
1418 | } | |
1419 | ||
1420 | if (dev->config_ops->vhost_dev_config_notifier) { | |
1421 | ret = dev->config_ops->vhost_dev_config_notifier(dev); | |
1422 | } | |
1423 | ||
1424 | return ret; | |
1425 | } | |
1426 | ||
44866521 TB |
1427 | static int vhost_user_slave_handle_vring_host_notifier(struct vhost_dev *dev, |
1428 | VhostUserVringArea *area, | |
1429 | int fd) | |
1430 | { | |
1431 | int queue_idx = area->u64 & VHOST_USER_VRING_IDX_MASK; | |
1432 | size_t page_size = qemu_real_host_page_size; | |
1433 | struct vhost_user *u = dev->opaque; | |
1434 | VhostUserState *user = u->user; | |
1435 | VirtIODevice *vdev = dev->vdev; | |
1436 | VhostUserHostNotifier *n; | |
1437 | void *addr; | |
1438 | char *name; | |
1439 | ||
1440 | if (!virtio_has_feature(dev->protocol_features, | |
1441 | VHOST_USER_PROTOCOL_F_HOST_NOTIFIER) || | |
1442 | vdev == NULL || queue_idx >= virtio_get_num_queues(vdev)) { | |
1443 | return -1; | |
1444 | } | |
1445 | ||
1446 | n = &user->notifier[queue_idx]; | |
1447 | ||
1448 | if (n->addr) { | |
1449 | virtio_queue_set_host_notifier_mr(vdev, queue_idx, &n->mr, false); | |
1450 | object_unparent(OBJECT(&n->mr)); | |
1451 | munmap(n->addr, page_size); | |
1452 | n->addr = NULL; | |
1453 | } | |
1454 | ||
1455 | if (area->u64 & VHOST_USER_VRING_NOFD_MASK) { | |
1456 | return 0; | |
1457 | } | |
1458 | ||
1459 | /* Sanity check. */ | |
1460 | if (area->size != page_size) { | |
1461 | return -1; | |
1462 | } | |
1463 | ||
1464 | addr = mmap(NULL, page_size, PROT_READ | PROT_WRITE, MAP_SHARED, | |
1465 | fd, area->offset); | |
1466 | if (addr == MAP_FAILED) { | |
1467 | return -1; | |
1468 | } | |
1469 | ||
1470 | name = g_strdup_printf("vhost-user/host-notifier@%p mmaps[%d]", | |
1471 | user, queue_idx); | |
1472 | memory_region_init_ram_device_ptr(&n->mr, OBJECT(vdev), name, | |
1473 | page_size, addr); | |
1474 | g_free(name); | |
1475 | ||
1476 | if (virtio_queue_set_host_notifier_mr(vdev, queue_idx, &n->mr, true)) { | |
1477 | munmap(addr, page_size); | |
1478 | return -1; | |
1479 | } | |
1480 | ||
1481 | n->addr = addr; | |
1482 | n->set = true; | |
1483 | ||
1484 | return 0; | |
1485 | } | |
1486 | ||
de62e494 GK |
1487 | static void close_slave_channel(struct vhost_user *u) |
1488 | { | |
57dc0217 GK |
1489 | g_source_destroy(u->slave_src); |
1490 | g_source_unref(u->slave_src); | |
1491 | u->slave_src = NULL; | |
1492 | object_unref(OBJECT(u->slave_ioc)); | |
1493 | u->slave_ioc = NULL; | |
de62e494 GK |
1494 | } |
1495 | ||
57dc0217 GK |
1496 | static gboolean slave_read(QIOChannel *ioc, GIOCondition condition, |
1497 | gpointer opaque) | |
4bbeeba0 MAL |
1498 | { |
1499 | struct vhost_dev *dev = opaque; | |
1500 | struct vhost_user *u = dev->opaque; | |
69aff030 MT |
1501 | VhostUserHeader hdr = { 0, }; |
1502 | VhostUserPayload payload = { 0, }; | |
57dc0217 GK |
1503 | Error *local_err = NULL; |
1504 | gboolean rc = G_SOURCE_CONTINUE; | |
1505 | int ret = 0; | |
1f3a4519 | 1506 | struct iovec iov; |
57dc0217 GK |
1507 | g_autofree int *fd = NULL; |
1508 | size_t fdsize = 0; | |
1509 | int i; | |
5f57fbea | 1510 | |
4bbeeba0 | 1511 | /* Read header */ |
1f3a4519 TB |
1512 | iov.iov_base = &hdr; |
1513 | iov.iov_len = VHOST_USER_HDR_SIZE; | |
1514 | ||
57dc0217 GK |
1515 | if (qio_channel_readv_full_all(ioc, &iov, 1, &fd, &fdsize, &local_err)) { |
1516 | error_report_err(local_err); | |
4bbeeba0 MAL |
1517 | goto err; |
1518 | } | |
1519 | ||
69aff030 | 1520 | if (hdr.size > VHOST_USER_PAYLOAD_SIZE) { |
4bbeeba0 | 1521 | error_report("Failed to read msg header." |
69aff030 | 1522 | " Size %d exceeds the maximum %zu.", hdr.size, |
4bbeeba0 MAL |
1523 | VHOST_USER_PAYLOAD_SIZE); |
1524 | goto err; | |
1525 | } | |
1526 | ||
1527 | /* Read payload */ | |
57dc0217 GK |
1528 | if (qio_channel_read_all(ioc, (char *) &payload, hdr.size, &local_err)) { |
1529 | error_report_err(local_err); | |
4bbeeba0 MAL |
1530 | goto err; |
1531 | } | |
1532 | ||
69aff030 | 1533 | switch (hdr.request) { |
6dcdd06e | 1534 | case VHOST_USER_SLAVE_IOTLB_MSG: |
69aff030 | 1535 | ret = vhost_backend_handle_iotlb_msg(dev, &payload.iotlb); |
6dcdd06e | 1536 | break; |
4c3e257b CL |
1537 | case VHOST_USER_SLAVE_CONFIG_CHANGE_MSG : |
1538 | ret = vhost_user_slave_handle_config_change(dev); | |
1539 | break; | |
44866521 TB |
1540 | case VHOST_USER_SLAVE_VRING_HOST_NOTIFIER_MSG: |
1541 | ret = vhost_user_slave_handle_vring_host_notifier(dev, &payload.area, | |
57dc0217 | 1542 | fd ? fd[0] : -1); |
44866521 | 1543 | break; |
4bbeeba0 | 1544 | default: |
0fdc465d | 1545 | error_report("Received unexpected msg type: %d.", hdr.request); |
4bbeeba0 MAL |
1546 | ret = -EINVAL; |
1547 | } | |
1548 | ||
1549 | /* | |
1550 | * REPLY_ACK feature handling. Other reply types has to be managed | |
1551 | * directly in their request handlers. | |
1552 | */ | |
69aff030 MT |
1553 | if (hdr.flags & VHOST_USER_NEED_REPLY_MASK) { |
1554 | struct iovec iovec[2]; | |
4bbeeba0 | 1555 | |
4bbeeba0 | 1556 | |
69aff030 MT |
1557 | hdr.flags &= ~VHOST_USER_NEED_REPLY_MASK; |
1558 | hdr.flags |= VHOST_USER_REPLY_MASK; | |
1559 | ||
1560 | payload.u64 = !!ret; | |
1561 | hdr.size = sizeof(payload.u64); | |
1562 | ||
1563 | iovec[0].iov_base = &hdr; | |
1564 | iovec[0].iov_len = VHOST_USER_HDR_SIZE; | |
1565 | iovec[1].iov_base = &payload; | |
1566 | iovec[1].iov_len = hdr.size; | |
1567 | ||
57dc0217 GK |
1568 | if (qio_channel_writev_all(ioc, iovec, ARRAY_SIZE(iovec), &local_err)) { |
1569 | error_report_err(local_err); | |
4bbeeba0 MAL |
1570 | goto err; |
1571 | } | |
1572 | } | |
1573 | ||
9e06080b | 1574 | goto fdcleanup; |
4bbeeba0 MAL |
1575 | |
1576 | err: | |
de62e494 | 1577 | close_slave_channel(u); |
57dc0217 | 1578 | rc = G_SOURCE_REMOVE; |
9e06080b GK |
1579 | |
1580 | fdcleanup: | |
57dc0217 GK |
1581 | if (fd) { |
1582 | for (i = 0; i < fdsize; i++) { | |
5f57fbea TB |
1583 | close(fd[i]); |
1584 | } | |
1f3a4519 | 1585 | } |
57dc0217 | 1586 | return rc; |
4bbeeba0 MAL |
1587 | } |
1588 | ||
1589 | static int vhost_setup_slave_channel(struct vhost_dev *dev) | |
1590 | { | |
1591 | VhostUserMsg msg = { | |
24e34754 MT |
1592 | .hdr.request = VHOST_USER_SET_SLAVE_REQ_FD, |
1593 | .hdr.flags = VHOST_USER_VERSION, | |
4bbeeba0 MAL |
1594 | }; |
1595 | struct vhost_user *u = dev->opaque; | |
1596 | int sv[2], ret = 0; | |
1597 | bool reply_supported = virtio_has_feature(dev->protocol_features, | |
1598 | VHOST_USER_PROTOCOL_F_REPLY_ACK); | |
57dc0217 GK |
1599 | Error *local_err = NULL; |
1600 | QIOChannel *ioc; | |
4bbeeba0 MAL |
1601 | |
1602 | if (!virtio_has_feature(dev->protocol_features, | |
1603 | VHOST_USER_PROTOCOL_F_SLAVE_REQ)) { | |
1604 | return 0; | |
1605 | } | |
1606 | ||
1607 | if (socketpair(PF_UNIX, SOCK_STREAM, 0, sv) == -1) { | |
1608 | error_report("socketpair() failed"); | |
1609 | return -1; | |
1610 | } | |
1611 | ||
57dc0217 GK |
1612 | ioc = QIO_CHANNEL(qio_channel_socket_new_fd(sv[0], &local_err)); |
1613 | if (!ioc) { | |
1614 | error_report_err(local_err); | |
1615 | return -1; | |
1616 | } | |
1617 | u->slave_ioc = ioc; | |
db8a3772 | 1618 | slave_update_read_handler(dev, NULL); |
4bbeeba0 MAL |
1619 | |
1620 | if (reply_supported) { | |
24e34754 | 1621 | msg.hdr.flags |= VHOST_USER_NEED_REPLY_MASK; |
4bbeeba0 MAL |
1622 | } |
1623 | ||
1624 | ret = vhost_user_write(dev, &msg, &sv[1], 1); | |
1625 | if (ret) { | |
1626 | goto out; | |
1627 | } | |
1628 | ||
1629 | if (reply_supported) { | |
1630 | ret = process_message_reply(dev, &msg); | |
1631 | } | |
1632 | ||
1633 | out: | |
1634 | close(sv[1]); | |
1635 | if (ret) { | |
de62e494 | 1636 | close_slave_channel(u); |
4bbeeba0 MAL |
1637 | } |
1638 | ||
1639 | return ret; | |
1640 | } | |
1641 | ||
18658a3c | 1642 | #ifdef CONFIG_LINUX |
f82c1116 DDAG |
1643 | /* |
1644 | * Called back from the postcopy fault thread when a fault is received on our | |
1645 | * ufd. | |
1646 | * TODO: This is Linux specific | |
1647 | */ | |
1648 | static int vhost_user_postcopy_fault_handler(struct PostCopyFD *pcfd, | |
1649 | void *ufd) | |
1650 | { | |
375318d0 DDAG |
1651 | struct vhost_dev *dev = pcfd->data; |
1652 | struct vhost_user *u = dev->opaque; | |
1653 | struct uffd_msg *msg = ufd; | |
1654 | uint64_t faultaddr = msg->arg.pagefault.address; | |
1655 | RAMBlock *rb = NULL; | |
1656 | uint64_t rb_offset; | |
1657 | int i; | |
1658 | ||
1659 | trace_vhost_user_postcopy_fault_handler(pcfd->idstr, faultaddr, | |
1660 | dev->mem->nregions); | |
1661 | for (i = 0; i < MIN(dev->mem->nregions, u->region_rb_len); i++) { | |
1662 | trace_vhost_user_postcopy_fault_handler_loop(i, | |
1663 | u->postcopy_client_bases[i], dev->mem->regions[i].memory_size); | |
1664 | if (faultaddr >= u->postcopy_client_bases[i]) { | |
1665 | /* Ofset of the fault address in the vhost region */ | |
1666 | uint64_t region_offset = faultaddr - u->postcopy_client_bases[i]; | |
1667 | if (region_offset < dev->mem->regions[i].memory_size) { | |
1668 | rb_offset = region_offset + u->region_rb_offset[i]; | |
1669 | trace_vhost_user_postcopy_fault_handler_found(i, | |
1670 | region_offset, rb_offset); | |
1671 | rb = u->region_rb[i]; | |
1672 | return postcopy_request_shared_page(pcfd, rb, faultaddr, | |
1673 | rb_offset); | |
1674 | } | |
1675 | } | |
1676 | } | |
1677 | error_report("%s: Failed to find region for fault %" PRIx64, | |
1678 | __func__, faultaddr); | |
1679 | return -1; | |
f82c1116 DDAG |
1680 | } |
1681 | ||
c07e3615 DDAG |
1682 | static int vhost_user_postcopy_waker(struct PostCopyFD *pcfd, RAMBlock *rb, |
1683 | uint64_t offset) | |
1684 | { | |
1685 | struct vhost_dev *dev = pcfd->data; | |
1686 | struct vhost_user *u = dev->opaque; | |
1687 | int i; | |
1688 | ||
1689 | trace_vhost_user_postcopy_waker(qemu_ram_get_idstr(rb), offset); | |
1690 | ||
1691 | if (!u) { | |
1692 | return 0; | |
1693 | } | |
1694 | /* Translate the offset into an address in the clients address space */ | |
1695 | for (i = 0; i < MIN(dev->mem->nregions, u->region_rb_len); i++) { | |
1696 | if (u->region_rb[i] == rb && | |
1697 | offset >= u->region_rb_offset[i] && | |
1698 | offset < (u->region_rb_offset[i] + | |
1699 | dev->mem->regions[i].memory_size)) { | |
1700 | uint64_t client_addr = (offset - u->region_rb_offset[i]) + | |
1701 | u->postcopy_client_bases[i]; | |
1702 | trace_vhost_user_postcopy_waker_found(client_addr); | |
1703 | return postcopy_wake_shared(pcfd, client_addr, rb); | |
1704 | } | |
1705 | } | |
1706 | ||
1707 | trace_vhost_user_postcopy_waker_nomatch(qemu_ram_get_idstr(rb), offset); | |
1708 | return 0; | |
1709 | } | |
18658a3c | 1710 | #endif |
c07e3615 | 1711 | |
d3dff7a5 DDAG |
1712 | /* |
1713 | * Called at the start of an inbound postcopy on reception of the | |
1714 | * 'advise' command. | |
1715 | */ | |
1716 | static int vhost_user_postcopy_advise(struct vhost_dev *dev, Error **errp) | |
1717 | { | |
18658a3c | 1718 | #ifdef CONFIG_LINUX |
d3dff7a5 | 1719 | struct vhost_user *u = dev->opaque; |
4d0cf552 | 1720 | CharBackend *chr = u->user->chr; |
d3dff7a5 DDAG |
1721 | int ufd; |
1722 | VhostUserMsg msg = { | |
1723 | .hdr.request = VHOST_USER_POSTCOPY_ADVISE, | |
1724 | .hdr.flags = VHOST_USER_VERSION, | |
1725 | }; | |
1726 | ||
1727 | if (vhost_user_write(dev, &msg, NULL, 0) < 0) { | |
1728 | error_setg(errp, "Failed to send postcopy_advise to vhost"); | |
1729 | return -1; | |
1730 | } | |
1731 | ||
1732 | if (vhost_user_read(dev, &msg) < 0) { | |
1733 | error_setg(errp, "Failed to get postcopy_advise reply from vhost"); | |
1734 | return -1; | |
1735 | } | |
1736 | ||
1737 | if (msg.hdr.request != VHOST_USER_POSTCOPY_ADVISE) { | |
1738 | error_setg(errp, "Unexpected msg type. Expected %d received %d", | |
1739 | VHOST_USER_POSTCOPY_ADVISE, msg.hdr.request); | |
1740 | return -1; | |
1741 | } | |
1742 | ||
1743 | if (msg.hdr.size) { | |
1744 | error_setg(errp, "Received bad msg size."); | |
1745 | return -1; | |
1746 | } | |
1747 | ufd = qemu_chr_fe_get_msgfd(chr); | |
1748 | if (ufd < 0) { | |
1749 | error_setg(errp, "%s: Failed to get ufd", __func__); | |
1750 | return -1; | |
1751 | } | |
9952e807 | 1752 | qemu_set_nonblock(ufd); |
d3dff7a5 | 1753 | |
f82c1116 DDAG |
1754 | /* register ufd with userfault thread */ |
1755 | u->postcopy_fd.fd = ufd; | |
1756 | u->postcopy_fd.data = dev; | |
1757 | u->postcopy_fd.handler = vhost_user_postcopy_fault_handler; | |
c07e3615 | 1758 | u->postcopy_fd.waker = vhost_user_postcopy_waker; |
f82c1116 DDAG |
1759 | u->postcopy_fd.idstr = "vhost-user"; /* Need to find unique name */ |
1760 | postcopy_register_shared_ufd(&u->postcopy_fd); | |
d3dff7a5 | 1761 | return 0; |
18658a3c PB |
1762 | #else |
1763 | error_setg(errp, "Postcopy not supported on non-Linux systems"); | |
1764 | return -1; | |
1765 | #endif | |
d3dff7a5 DDAG |
1766 | } |
1767 | ||
6864a7b5 DDAG |
1768 | /* |
1769 | * Called at the switch to postcopy on reception of the 'listen' command. | |
1770 | */ | |
1771 | static int vhost_user_postcopy_listen(struct vhost_dev *dev, Error **errp) | |
1772 | { | |
1773 | struct vhost_user *u = dev->opaque; | |
1774 | int ret; | |
1775 | VhostUserMsg msg = { | |
1776 | .hdr.request = VHOST_USER_POSTCOPY_LISTEN, | |
1777 | .hdr.flags = VHOST_USER_VERSION | VHOST_USER_NEED_REPLY_MASK, | |
1778 | }; | |
1779 | u->postcopy_listen = true; | |
1780 | trace_vhost_user_postcopy_listen(); | |
1781 | if (vhost_user_write(dev, &msg, NULL, 0) < 0) { | |
1782 | error_setg(errp, "Failed to send postcopy_listen to vhost"); | |
1783 | return -1; | |
1784 | } | |
1785 | ||
1786 | ret = process_message_reply(dev, &msg); | |
1787 | if (ret) { | |
1788 | error_setg(errp, "Failed to receive reply to postcopy_listen"); | |
1789 | return ret; | |
1790 | } | |
1791 | ||
1792 | return 0; | |
1793 | } | |
1794 | ||
46343570 DDAG |
1795 | /* |
1796 | * Called at the end of postcopy | |
1797 | */ | |
1798 | static int vhost_user_postcopy_end(struct vhost_dev *dev, Error **errp) | |
1799 | { | |
1800 | VhostUserMsg msg = { | |
1801 | .hdr.request = VHOST_USER_POSTCOPY_END, | |
1802 | .hdr.flags = VHOST_USER_VERSION | VHOST_USER_NEED_REPLY_MASK, | |
1803 | }; | |
1804 | int ret; | |
1805 | struct vhost_user *u = dev->opaque; | |
1806 | ||
1807 | trace_vhost_user_postcopy_end_entry(); | |
1808 | if (vhost_user_write(dev, &msg, NULL, 0) < 0) { | |
1809 | error_setg(errp, "Failed to send postcopy_end to vhost"); | |
1810 | return -1; | |
1811 | } | |
1812 | ||
1813 | ret = process_message_reply(dev, &msg); | |
1814 | if (ret) { | |
1815 | error_setg(errp, "Failed to receive reply to postcopy_end"); | |
1816 | return ret; | |
1817 | } | |
1818 | postcopy_unregister_shared_ufd(&u->postcopy_fd); | |
c4f75385 | 1819 | close(u->postcopy_fd.fd); |
46343570 DDAG |
1820 | u->postcopy_fd.handler = NULL; |
1821 | ||
1822 | trace_vhost_user_postcopy_end_exit(); | |
1823 | ||
1824 | return 0; | |
1825 | } | |
1826 | ||
9ccbfe14 DDAG |
1827 | static int vhost_user_postcopy_notifier(NotifierWithReturn *notifier, |
1828 | void *opaque) | |
1829 | { | |
1830 | struct PostcopyNotifyData *pnd = opaque; | |
1831 | struct vhost_user *u = container_of(notifier, struct vhost_user, | |
1832 | postcopy_notifier); | |
1833 | struct vhost_dev *dev = u->dev; | |
1834 | ||
1835 | switch (pnd->reason) { | |
1836 | case POSTCOPY_NOTIFY_PROBE: | |
1837 | if (!virtio_has_feature(dev->protocol_features, | |
1838 | VHOST_USER_PROTOCOL_F_PAGEFAULT)) { | |
1839 | /* TODO: Get the device name into this error somehow */ | |
1840 | error_setg(pnd->errp, | |
1841 | "vhost-user backend not capable of postcopy"); | |
1842 | return -ENOENT; | |
1843 | } | |
1844 | break; | |
1845 | ||
d3dff7a5 DDAG |
1846 | case POSTCOPY_NOTIFY_INBOUND_ADVISE: |
1847 | return vhost_user_postcopy_advise(dev, pnd->errp); | |
1848 | ||
6864a7b5 DDAG |
1849 | case POSTCOPY_NOTIFY_INBOUND_LISTEN: |
1850 | return vhost_user_postcopy_listen(dev, pnd->errp); | |
1851 | ||
46343570 DDAG |
1852 | case POSTCOPY_NOTIFY_INBOUND_END: |
1853 | return vhost_user_postcopy_end(dev, pnd->errp); | |
1854 | ||
9ccbfe14 DDAG |
1855 | default: |
1856 | /* We ignore notifications we don't know */ | |
1857 | break; | |
1858 | } | |
1859 | ||
1860 | return 0; | |
1861 | } | |
1862 | ||
28770ff9 KW |
1863 | static int vhost_user_backend_init(struct vhost_dev *dev, void *opaque, |
1864 | Error **errp) | |
5f6f6664 | 1865 | { |
6b0eff1a | 1866 | uint64_t features, protocol_features, ram_slots; |
2152f3fe | 1867 | struct vhost_user *u; |
dcb10c00 MT |
1868 | int err; |
1869 | ||
5f6f6664 NN |
1870 | assert(dev->vhost_ops->backend_type == VHOST_BACKEND_TYPE_USER); |
1871 | ||
2152f3fe | 1872 | u = g_new0(struct vhost_user, 1); |
4d0cf552 | 1873 | u->user = opaque; |
9ccbfe14 | 1874 | u->dev = dev; |
2152f3fe | 1875 | dev->opaque = u; |
5f6f6664 | 1876 | |
21e70425 | 1877 | err = vhost_user_get_features(dev, &features); |
dcb10c00 | 1878 | if (err < 0) { |
f2a6e6c4 | 1879 | return err; |
dcb10c00 MT |
1880 | } |
1881 | ||
1882 | if (virtio_has_feature(features, VHOST_USER_F_PROTOCOL_FEATURES)) { | |
1883 | dev->backend_features |= 1ULL << VHOST_USER_F_PROTOCOL_FEATURES; | |
1884 | ||
21e70425 | 1885 | err = vhost_user_get_u64(dev, VHOST_USER_GET_PROTOCOL_FEATURES, |
6dcdd06e | 1886 | &protocol_features); |
dcb10c00 | 1887 | if (err < 0) { |
28770ff9 | 1888 | return -EPROTO; |
dcb10c00 MT |
1889 | } |
1890 | ||
6dcdd06e MC |
1891 | dev->protocol_features = |
1892 | protocol_features & VHOST_USER_PROTOCOL_FEATURE_MASK; | |
1c3e5a26 MC |
1893 | |
1894 | if (!dev->config_ops || !dev->config_ops->vhost_dev_config_notifier) { | |
1895 | /* Don't acknowledge CONFIG feature if device doesn't support it */ | |
1896 | dev->protocol_features &= ~(1ULL << VHOST_USER_PROTOCOL_F_CONFIG); | |
1897 | } else if (!(protocol_features & | |
1898 | (1ULL << VHOST_USER_PROTOCOL_F_CONFIG))) { | |
28770ff9 KW |
1899 | error_setg(errp, "Device expects VHOST_USER_PROTOCOL_F_CONFIG " |
1900 | "but backend does not support it."); | |
1901 | return -EINVAL; | |
1c3e5a26 MC |
1902 | } |
1903 | ||
21e70425 | 1904 | err = vhost_user_set_protocol_features(dev, dev->protocol_features); |
dcb10c00 | 1905 | if (err < 0) { |
28770ff9 | 1906 | return -EPROTO; |
dcb10c00 | 1907 | } |
e2051e9e YL |
1908 | |
1909 | /* query the max queues we support if backend supports Multiple Queue */ | |
1910 | if (dev->protocol_features & (1ULL << VHOST_USER_PROTOCOL_F_MQ)) { | |
21e70425 MAL |
1911 | err = vhost_user_get_u64(dev, VHOST_USER_GET_QUEUE_NUM, |
1912 | &dev->max_queues); | |
e2051e9e | 1913 | if (err < 0) { |
28770ff9 | 1914 | return -EPROTO; |
e2051e9e YL |
1915 | } |
1916 | } | |
c90bd505 | 1917 | if (dev->num_queues && dev->max_queues < dev->num_queues) { |
28770ff9 KW |
1918 | error_setg(errp, "The maximum number of queues supported by the " |
1919 | "backend is %" PRIu64, dev->max_queues); | |
c90bd505 KW |
1920 | return -EINVAL; |
1921 | } | |
6dcdd06e MC |
1922 | |
1923 | if (virtio_has_feature(features, VIRTIO_F_IOMMU_PLATFORM) && | |
1924 | !(virtio_has_feature(dev->protocol_features, | |
1925 | VHOST_USER_PROTOCOL_F_SLAVE_REQ) && | |
1926 | virtio_has_feature(dev->protocol_features, | |
1927 | VHOST_USER_PROTOCOL_F_REPLY_ACK))) { | |
28770ff9 KW |
1928 | error_setg(errp, "IOMMU support requires reply-ack and " |
1929 | "slave-req protocol features."); | |
1930 | return -EINVAL; | |
6dcdd06e | 1931 | } |
6b0eff1a RN |
1932 | |
1933 | /* get max memory regions if backend supports configurable RAM slots */ | |
1934 | if (!virtio_has_feature(dev->protocol_features, | |
1935 | VHOST_USER_PROTOCOL_F_CONFIGURE_MEM_SLOTS)) { | |
27598393 | 1936 | u->user->memory_slots = VHOST_MEMORY_BASELINE_NREGIONS; |
6b0eff1a RN |
1937 | } else { |
1938 | err = vhost_user_get_max_memslots(dev, &ram_slots); | |
1939 | if (err < 0) { | |
28770ff9 | 1940 | return -EPROTO; |
6b0eff1a RN |
1941 | } |
1942 | ||
1943 | if (ram_slots < u->user->memory_slots) { | |
28770ff9 KW |
1944 | error_setg(errp, "The backend specified a max ram slots limit " |
1945 | "of %" PRIu64", when the prior validated limit was " | |
1946 | "%d. This limit should never decrease.", ram_slots, | |
1947 | u->user->memory_slots); | |
1948 | return -EINVAL; | |
6b0eff1a RN |
1949 | } |
1950 | ||
27598393 | 1951 | u->user->memory_slots = MIN(ram_slots, VHOST_USER_MAX_RAM_SLOTS); |
6b0eff1a | 1952 | } |
dcb10c00 MT |
1953 | } |
1954 | ||
d2fc4402 MAL |
1955 | if (dev->migration_blocker == NULL && |
1956 | !virtio_has_feature(dev->protocol_features, | |
1957 | VHOST_USER_PROTOCOL_F_LOG_SHMFD)) { | |
1958 | error_setg(&dev->migration_blocker, | |
1959 | "Migration disabled: vhost-user backend lacks " | |
1960 | "VHOST_USER_PROTOCOL_F_LOG_SHMFD feature."); | |
1961 | } | |
1962 | ||
67b3965e AM |
1963 | if (dev->vq_index == 0) { |
1964 | err = vhost_setup_slave_channel(dev); | |
1965 | if (err < 0) { | |
28770ff9 | 1966 | return -EPROTO; |
67b3965e | 1967 | } |
4bbeeba0 MAL |
1968 | } |
1969 | ||
9ccbfe14 DDAG |
1970 | u->postcopy_notifier.notify = vhost_user_postcopy_notifier; |
1971 | postcopy_add_notifier(&u->postcopy_notifier); | |
1972 | ||
5f6f6664 NN |
1973 | return 0; |
1974 | } | |
1975 | ||
4d0cf552 | 1976 | static int vhost_user_backend_cleanup(struct vhost_dev *dev) |
5f6f6664 | 1977 | { |
2152f3fe MAL |
1978 | struct vhost_user *u; |
1979 | ||
5f6f6664 NN |
1980 | assert(dev->vhost_ops->backend_type == VHOST_BACKEND_TYPE_USER); |
1981 | ||
2152f3fe | 1982 | u = dev->opaque; |
9ccbfe14 DDAG |
1983 | if (u->postcopy_notifier.notify) { |
1984 | postcopy_remove_notifier(&u->postcopy_notifier); | |
1985 | u->postcopy_notifier.notify = NULL; | |
1986 | } | |
c4f75385 IM |
1987 | u->postcopy_listen = false; |
1988 | if (u->postcopy_fd.handler) { | |
1989 | postcopy_unregister_shared_ufd(&u->postcopy_fd); | |
1990 | close(u->postcopy_fd.fd); | |
1991 | u->postcopy_fd.handler = NULL; | |
1992 | } | |
57dc0217 | 1993 | if (u->slave_ioc) { |
de62e494 | 1994 | close_slave_channel(u); |
4bbeeba0 | 1995 | } |
905125d0 DDAG |
1996 | g_free(u->region_rb); |
1997 | u->region_rb = NULL; | |
1998 | g_free(u->region_rb_offset); | |
1999 | u->region_rb_offset = NULL; | |
2000 | u->region_rb_len = 0; | |
2152f3fe | 2001 | g_free(u); |
5f6f6664 NN |
2002 | dev->opaque = 0; |
2003 | ||
2004 | return 0; | |
2005 | } | |
2006 | ||
fc57fd99 YL |
2007 | static int vhost_user_get_vq_index(struct vhost_dev *dev, int idx) |
2008 | { | |
2009 | assert(idx >= dev->vq_index && idx < dev->vq_index + dev->nvqs); | |
2010 | ||
2011 | return idx; | |
2012 | } | |
2013 | ||
2ce68e4c IM |
2014 | static int vhost_user_memslots_limit(struct vhost_dev *dev) |
2015 | { | |
6b0eff1a RN |
2016 | struct vhost_user *u = dev->opaque; |
2017 | ||
2018 | return u->user->memory_slots; | |
2ce68e4c IM |
2019 | } |
2020 | ||
1be0ac21 MAL |
2021 | static bool vhost_user_requires_shm_log(struct vhost_dev *dev) |
2022 | { | |
2023 | assert(dev->vhost_ops->backend_type == VHOST_BACKEND_TYPE_USER); | |
2024 | ||
2025 | return virtio_has_feature(dev->protocol_features, | |
2026 | VHOST_USER_PROTOCOL_F_LOG_SHMFD); | |
2027 | } | |
2028 | ||
3e866365 TC |
2029 | static int vhost_user_migration_done(struct vhost_dev *dev, char* mac_addr) |
2030 | { | |
ebf2a499 | 2031 | VhostUserMsg msg = { }; |
3e866365 TC |
2032 | |
2033 | assert(dev->vhost_ops->backend_type == VHOST_BACKEND_TYPE_USER); | |
2034 | ||
2035 | /* If guest supports GUEST_ANNOUNCE do nothing */ | |
2036 | if (virtio_has_feature(dev->acked_features, VIRTIO_NET_F_GUEST_ANNOUNCE)) { | |
2037 | return 0; | |
2038 | } | |
2039 | ||
2040 | /* if backend supports VHOST_USER_PROTOCOL_F_RARP ask it to send the RARP */ | |
2041 | if (virtio_has_feature(dev->protocol_features, | |
2042 | VHOST_USER_PROTOCOL_F_RARP)) { | |
24e34754 MT |
2043 | msg.hdr.request = VHOST_USER_SEND_RARP; |
2044 | msg.hdr.flags = VHOST_USER_VERSION; | |
7f4a930e | 2045 | memcpy((char *)&msg.payload.u64, mac_addr, 6); |
24e34754 | 2046 | msg.hdr.size = sizeof(msg.payload.u64); |
3e866365 | 2047 | |
c4843a45 | 2048 | return vhost_user_write(dev, &msg, NULL, 0); |
3e866365 TC |
2049 | } |
2050 | return -1; | |
2051 | } | |
2052 | ||
ffe42cc1 MT |
2053 | static bool vhost_user_can_merge(struct vhost_dev *dev, |
2054 | uint64_t start1, uint64_t size1, | |
2055 | uint64_t start2, uint64_t size2) | |
2056 | { | |
07bdaa41 | 2057 | ram_addr_t offset; |
ffe42cc1 | 2058 | int mfd, rfd; |
ffe42cc1 | 2059 | |
23374a84 RN |
2060 | (void)vhost_user_get_mr_data(start1, &offset, &mfd); |
2061 | (void)vhost_user_get_mr_data(start2, &offset, &rfd); | |
ffe42cc1 MT |
2062 | |
2063 | return mfd == rfd; | |
2064 | } | |
2065 | ||
c5f048d8 MC |
2066 | static int vhost_user_net_set_mtu(struct vhost_dev *dev, uint16_t mtu) |
2067 | { | |
2068 | VhostUserMsg msg; | |
2069 | bool reply_supported = virtio_has_feature(dev->protocol_features, | |
2070 | VHOST_USER_PROTOCOL_F_REPLY_ACK); | |
2071 | ||
2072 | if (!(dev->protocol_features & (1ULL << VHOST_USER_PROTOCOL_F_NET_MTU))) { | |
2073 | return 0; | |
2074 | } | |
2075 | ||
24e34754 | 2076 | msg.hdr.request = VHOST_USER_NET_SET_MTU; |
c5f048d8 | 2077 | msg.payload.u64 = mtu; |
24e34754 MT |
2078 | msg.hdr.size = sizeof(msg.payload.u64); |
2079 | msg.hdr.flags = VHOST_USER_VERSION; | |
c5f048d8 | 2080 | if (reply_supported) { |
24e34754 | 2081 | msg.hdr.flags |= VHOST_USER_NEED_REPLY_MASK; |
c5f048d8 MC |
2082 | } |
2083 | ||
2084 | if (vhost_user_write(dev, &msg, NULL, 0) < 0) { | |
2085 | return -1; | |
2086 | } | |
2087 | ||
2088 | /* If reply_ack supported, slave has to ack specified MTU is valid */ | |
2089 | if (reply_supported) { | |
3cf7daf8 | 2090 | return process_message_reply(dev, &msg); |
c5f048d8 MC |
2091 | } |
2092 | ||
2093 | return 0; | |
2094 | } | |
2095 | ||
6dcdd06e MC |
2096 | static int vhost_user_send_device_iotlb_msg(struct vhost_dev *dev, |
2097 | struct vhost_iotlb_msg *imsg) | |
2098 | { | |
2099 | VhostUserMsg msg = { | |
24e34754 MT |
2100 | .hdr.request = VHOST_USER_IOTLB_MSG, |
2101 | .hdr.size = sizeof(msg.payload.iotlb), | |
2102 | .hdr.flags = VHOST_USER_VERSION | VHOST_USER_NEED_REPLY_MASK, | |
6dcdd06e MC |
2103 | .payload.iotlb = *imsg, |
2104 | }; | |
2105 | ||
2106 | if (vhost_user_write(dev, &msg, NULL, 0) < 0) { | |
2107 | return -EFAULT; | |
2108 | } | |
2109 | ||
2110 | return process_message_reply(dev, &msg); | |
2111 | } | |
2112 | ||
2113 | ||
2114 | static void vhost_user_set_iotlb_callback(struct vhost_dev *dev, int enabled) | |
2115 | { | |
2116 | /* No-op as the receive channel is not dedicated to IOTLB messages. */ | |
2117 | } | |
2118 | ||
4c3e257b CL |
2119 | static int vhost_user_get_config(struct vhost_dev *dev, uint8_t *config, |
2120 | uint32_t config_len) | |
2121 | { | |
2122 | VhostUserMsg msg = { | |
24e34754 MT |
2123 | .hdr.request = VHOST_USER_GET_CONFIG, |
2124 | .hdr.flags = VHOST_USER_VERSION, | |
2125 | .hdr.size = VHOST_USER_CONFIG_HDR_SIZE + config_len, | |
4c3e257b CL |
2126 | }; |
2127 | ||
1c3e5a26 MC |
2128 | if (!virtio_has_feature(dev->protocol_features, |
2129 | VHOST_USER_PROTOCOL_F_CONFIG)) { | |
2130 | return -1; | |
2131 | } | |
2132 | ||
4c3e257b CL |
2133 | if (config_len > VHOST_USER_MAX_CONFIG_SIZE) { |
2134 | return -1; | |
2135 | } | |
2136 | ||
2137 | msg.payload.config.offset = 0; | |
2138 | msg.payload.config.size = config_len; | |
2139 | if (vhost_user_write(dev, &msg, NULL, 0) < 0) { | |
2140 | return -1; | |
2141 | } | |
2142 | ||
2143 | if (vhost_user_read(dev, &msg) < 0) { | |
2144 | return -1; | |
2145 | } | |
2146 | ||
24e34754 | 2147 | if (msg.hdr.request != VHOST_USER_GET_CONFIG) { |
4c3e257b | 2148 | error_report("Received unexpected msg type. Expected %d received %d", |
24e34754 | 2149 | VHOST_USER_GET_CONFIG, msg.hdr.request); |
4c3e257b CL |
2150 | return -1; |
2151 | } | |
2152 | ||
24e34754 | 2153 | if (msg.hdr.size != VHOST_USER_CONFIG_HDR_SIZE + config_len) { |
4c3e257b CL |
2154 | error_report("Received bad msg size."); |
2155 | return -1; | |
2156 | } | |
2157 | ||
2158 | memcpy(config, msg.payload.config.region, config_len); | |
2159 | ||
2160 | return 0; | |
2161 | } | |
2162 | ||
2163 | static int vhost_user_set_config(struct vhost_dev *dev, const uint8_t *data, | |
2164 | uint32_t offset, uint32_t size, uint32_t flags) | |
2165 | { | |
2166 | uint8_t *p; | |
2167 | bool reply_supported = virtio_has_feature(dev->protocol_features, | |
2168 | VHOST_USER_PROTOCOL_F_REPLY_ACK); | |
2169 | ||
2170 | VhostUserMsg msg = { | |
24e34754 MT |
2171 | .hdr.request = VHOST_USER_SET_CONFIG, |
2172 | .hdr.flags = VHOST_USER_VERSION, | |
2173 | .hdr.size = VHOST_USER_CONFIG_HDR_SIZE + size, | |
4c3e257b CL |
2174 | }; |
2175 | ||
1c3e5a26 MC |
2176 | if (!virtio_has_feature(dev->protocol_features, |
2177 | VHOST_USER_PROTOCOL_F_CONFIG)) { | |
2178 | return -1; | |
2179 | } | |
2180 | ||
4c3e257b | 2181 | if (reply_supported) { |
24e34754 | 2182 | msg.hdr.flags |= VHOST_USER_NEED_REPLY_MASK; |
4c3e257b CL |
2183 | } |
2184 | ||
2185 | if (size > VHOST_USER_MAX_CONFIG_SIZE) { | |
2186 | return -1; | |
2187 | } | |
2188 | ||
2189 | msg.payload.config.offset = offset, | |
2190 | msg.payload.config.size = size, | |
2191 | msg.payload.config.flags = flags, | |
2192 | p = msg.payload.config.region; | |
2193 | memcpy(p, data, size); | |
2194 | ||
2195 | if (vhost_user_write(dev, &msg, NULL, 0) < 0) { | |
2196 | return -1; | |
2197 | } | |
2198 | ||
2199 | if (reply_supported) { | |
2200 | return process_message_reply(dev, &msg); | |
2201 | } | |
2202 | ||
2203 | return 0; | |
2204 | } | |
2205 | ||
efbfeb81 GA |
2206 | static int vhost_user_crypto_create_session(struct vhost_dev *dev, |
2207 | void *session_info, | |
2208 | uint64_t *session_id) | |
2209 | { | |
2210 | bool crypto_session = virtio_has_feature(dev->protocol_features, | |
2211 | VHOST_USER_PROTOCOL_F_CRYPTO_SESSION); | |
2212 | CryptoDevBackendSymSessionInfo *sess_info = session_info; | |
2213 | VhostUserMsg msg = { | |
2214 | .hdr.request = VHOST_USER_CREATE_CRYPTO_SESSION, | |
2215 | .hdr.flags = VHOST_USER_VERSION, | |
2216 | .hdr.size = sizeof(msg.payload.session), | |
2217 | }; | |
2218 | ||
2219 | assert(dev->vhost_ops->backend_type == VHOST_BACKEND_TYPE_USER); | |
2220 | ||
2221 | if (!crypto_session) { | |
2222 | error_report("vhost-user trying to send unhandled ioctl"); | |
2223 | return -1; | |
2224 | } | |
2225 | ||
2226 | memcpy(&msg.payload.session.session_setup_data, sess_info, | |
2227 | sizeof(CryptoDevBackendSymSessionInfo)); | |
2228 | if (sess_info->key_len) { | |
2229 | memcpy(&msg.payload.session.key, sess_info->cipher_key, | |
2230 | sess_info->key_len); | |
2231 | } | |
2232 | if (sess_info->auth_key_len > 0) { | |
2233 | memcpy(&msg.payload.session.auth_key, sess_info->auth_key, | |
2234 | sess_info->auth_key_len); | |
2235 | } | |
2236 | if (vhost_user_write(dev, &msg, NULL, 0) < 0) { | |
2237 | error_report("vhost_user_write() return -1, create session failed"); | |
2238 | return -1; | |
2239 | } | |
2240 | ||
2241 | if (vhost_user_read(dev, &msg) < 0) { | |
2242 | error_report("vhost_user_read() return -1, create session failed"); | |
2243 | return -1; | |
2244 | } | |
2245 | ||
2246 | if (msg.hdr.request != VHOST_USER_CREATE_CRYPTO_SESSION) { | |
2247 | error_report("Received unexpected msg type. Expected %d received %d", | |
2248 | VHOST_USER_CREATE_CRYPTO_SESSION, msg.hdr.request); | |
2249 | return -1; | |
2250 | } | |
2251 | ||
2252 | if (msg.hdr.size != sizeof(msg.payload.session)) { | |
2253 | error_report("Received bad msg size."); | |
2254 | return -1; | |
2255 | } | |
2256 | ||
2257 | if (msg.payload.session.session_id < 0) { | |
2258 | error_report("Bad session id: %" PRId64 "", | |
2259 | msg.payload.session.session_id); | |
2260 | return -1; | |
2261 | } | |
2262 | *session_id = msg.payload.session.session_id; | |
2263 | ||
2264 | return 0; | |
2265 | } | |
2266 | ||
2267 | static int | |
2268 | vhost_user_crypto_close_session(struct vhost_dev *dev, uint64_t session_id) | |
2269 | { | |
2270 | bool crypto_session = virtio_has_feature(dev->protocol_features, | |
2271 | VHOST_USER_PROTOCOL_F_CRYPTO_SESSION); | |
2272 | VhostUserMsg msg = { | |
2273 | .hdr.request = VHOST_USER_CLOSE_CRYPTO_SESSION, | |
2274 | .hdr.flags = VHOST_USER_VERSION, | |
2275 | .hdr.size = sizeof(msg.payload.u64), | |
2276 | }; | |
2277 | msg.payload.u64 = session_id; | |
2278 | ||
2279 | if (!crypto_session) { | |
2280 | error_report("vhost-user trying to send unhandled ioctl"); | |
2281 | return -1; | |
2282 | } | |
2283 | ||
2284 | if (vhost_user_write(dev, &msg, NULL, 0) < 0) { | |
2285 | error_report("vhost_user_write() return -1, close session failed"); | |
2286 | return -1; | |
2287 | } | |
2288 | ||
2289 | return 0; | |
2290 | } | |
2291 | ||
988a2775 TB |
2292 | static bool vhost_user_mem_section_filter(struct vhost_dev *dev, |
2293 | MemoryRegionSection *section) | |
2294 | { | |
2295 | bool result; | |
2296 | ||
2297 | result = memory_region_get_fd(section->mr) >= 0; | |
2298 | ||
2299 | return result; | |
2300 | } | |
2301 | ||
5ad204bf XY |
2302 | static int vhost_user_get_inflight_fd(struct vhost_dev *dev, |
2303 | uint16_t queue_size, | |
2304 | struct vhost_inflight *inflight) | |
2305 | { | |
2306 | void *addr; | |
2307 | int fd; | |
2308 | struct vhost_user *u = dev->opaque; | |
2309 | CharBackend *chr = u->user->chr; | |
2310 | VhostUserMsg msg = { | |
2311 | .hdr.request = VHOST_USER_GET_INFLIGHT_FD, | |
2312 | .hdr.flags = VHOST_USER_VERSION, | |
2313 | .payload.inflight.num_queues = dev->nvqs, | |
2314 | .payload.inflight.queue_size = queue_size, | |
2315 | .hdr.size = sizeof(msg.payload.inflight), | |
2316 | }; | |
2317 | ||
2318 | if (!virtio_has_feature(dev->protocol_features, | |
2319 | VHOST_USER_PROTOCOL_F_INFLIGHT_SHMFD)) { | |
2320 | return 0; | |
2321 | } | |
2322 | ||
2323 | if (vhost_user_write(dev, &msg, NULL, 0) < 0) { | |
2324 | return -1; | |
2325 | } | |
2326 | ||
2327 | if (vhost_user_read(dev, &msg) < 0) { | |
2328 | return -1; | |
2329 | } | |
2330 | ||
2331 | if (msg.hdr.request != VHOST_USER_GET_INFLIGHT_FD) { | |
2332 | error_report("Received unexpected msg type. " | |
2333 | "Expected %d received %d", | |
2334 | VHOST_USER_GET_INFLIGHT_FD, msg.hdr.request); | |
2335 | return -1; | |
2336 | } | |
2337 | ||
2338 | if (msg.hdr.size != sizeof(msg.payload.inflight)) { | |
2339 | error_report("Received bad msg size."); | |
2340 | return -1; | |
2341 | } | |
2342 | ||
2343 | if (!msg.payload.inflight.mmap_size) { | |
2344 | return 0; | |
2345 | } | |
2346 | ||
2347 | fd = qemu_chr_fe_get_msgfd(chr); | |
2348 | if (fd < 0) { | |
2349 | error_report("Failed to get mem fd"); | |
2350 | return -1; | |
2351 | } | |
2352 | ||
2353 | addr = mmap(0, msg.payload.inflight.mmap_size, PROT_READ | PROT_WRITE, | |
2354 | MAP_SHARED, fd, msg.payload.inflight.mmap_offset); | |
2355 | ||
2356 | if (addr == MAP_FAILED) { | |
2357 | error_report("Failed to mmap mem fd"); | |
2358 | close(fd); | |
2359 | return -1; | |
2360 | } | |
2361 | ||
2362 | inflight->addr = addr; | |
2363 | inflight->fd = fd; | |
2364 | inflight->size = msg.payload.inflight.mmap_size; | |
2365 | inflight->offset = msg.payload.inflight.mmap_offset; | |
2366 | inflight->queue_size = queue_size; | |
2367 | ||
2368 | return 0; | |
2369 | } | |
2370 | ||
2371 | static int vhost_user_set_inflight_fd(struct vhost_dev *dev, | |
2372 | struct vhost_inflight *inflight) | |
2373 | { | |
2374 | VhostUserMsg msg = { | |
2375 | .hdr.request = VHOST_USER_SET_INFLIGHT_FD, | |
2376 | .hdr.flags = VHOST_USER_VERSION, | |
2377 | .payload.inflight.mmap_size = inflight->size, | |
2378 | .payload.inflight.mmap_offset = inflight->offset, | |
2379 | .payload.inflight.num_queues = dev->nvqs, | |
2380 | .payload.inflight.queue_size = inflight->queue_size, | |
2381 | .hdr.size = sizeof(msg.payload.inflight), | |
2382 | }; | |
2383 | ||
2384 | if (!virtio_has_feature(dev->protocol_features, | |
2385 | VHOST_USER_PROTOCOL_F_INFLIGHT_SHMFD)) { | |
2386 | return 0; | |
2387 | } | |
2388 | ||
2389 | if (vhost_user_write(dev, &msg, &inflight->fd, 1) < 0) { | |
2390 | return -1; | |
2391 | } | |
2392 | ||
2393 | return 0; | |
2394 | } | |
2395 | ||
0b99f224 | 2396 | bool vhost_user_init(VhostUserState *user, CharBackend *chr, Error **errp) |
4d0cf552 | 2397 | { |
0b99f224 MAL |
2398 | if (user->chr) { |
2399 | error_setg(errp, "Cannot initialize vhost-user state"); | |
2400 | return false; | |
2401 | } | |
2402 | user->chr = chr; | |
6b0eff1a | 2403 | user->memory_slots = 0; |
0b99f224 | 2404 | return true; |
4d0cf552 TB |
2405 | } |
2406 | ||
2407 | void vhost_user_cleanup(VhostUserState *user) | |
2408 | { | |
44866521 TB |
2409 | int i; |
2410 | ||
0b99f224 MAL |
2411 | if (!user->chr) { |
2412 | return; | |
2413 | } | |
2414 | ||
44866521 TB |
2415 | for (i = 0; i < VIRTIO_QUEUE_MAX; i++) { |
2416 | if (user->notifier[i].addr) { | |
2417 | object_unparent(OBJECT(&user->notifier[i].mr)); | |
2418 | munmap(user->notifier[i].addr, qemu_real_host_page_size); | |
2419 | user->notifier[i].addr = NULL; | |
2420 | } | |
2421 | } | |
0b99f224 | 2422 | user->chr = NULL; |
4d0cf552 TB |
2423 | } |
2424 | ||
5f6f6664 NN |
2425 | const VhostOps user_ops = { |
2426 | .backend_type = VHOST_BACKEND_TYPE_USER, | |
4d0cf552 TB |
2427 | .vhost_backend_init = vhost_user_backend_init, |
2428 | .vhost_backend_cleanup = vhost_user_backend_cleanup, | |
2ce68e4c | 2429 | .vhost_backend_memslots_limit = vhost_user_memslots_limit, |
21e70425 MAL |
2430 | .vhost_set_log_base = vhost_user_set_log_base, |
2431 | .vhost_set_mem_table = vhost_user_set_mem_table, | |
2432 | .vhost_set_vring_addr = vhost_user_set_vring_addr, | |
2433 | .vhost_set_vring_endian = vhost_user_set_vring_endian, | |
2434 | .vhost_set_vring_num = vhost_user_set_vring_num, | |
2435 | .vhost_set_vring_base = vhost_user_set_vring_base, | |
2436 | .vhost_get_vring_base = vhost_user_get_vring_base, | |
2437 | .vhost_set_vring_kick = vhost_user_set_vring_kick, | |
2438 | .vhost_set_vring_call = vhost_user_set_vring_call, | |
2439 | .vhost_set_features = vhost_user_set_features, | |
2440 | .vhost_get_features = vhost_user_get_features, | |
2441 | .vhost_set_owner = vhost_user_set_owner, | |
2442 | .vhost_reset_device = vhost_user_reset_device, | |
2443 | .vhost_get_vq_index = vhost_user_get_vq_index, | |
2444 | .vhost_set_vring_enable = vhost_user_set_vring_enable, | |
1be0ac21 | 2445 | .vhost_requires_shm_log = vhost_user_requires_shm_log, |
3e866365 | 2446 | .vhost_migration_done = vhost_user_migration_done, |
ffe42cc1 | 2447 | .vhost_backend_can_merge = vhost_user_can_merge, |
c5f048d8 | 2448 | .vhost_net_set_mtu = vhost_user_net_set_mtu, |
6dcdd06e MC |
2449 | .vhost_set_iotlb_callback = vhost_user_set_iotlb_callback, |
2450 | .vhost_send_device_iotlb_msg = vhost_user_send_device_iotlb_msg, | |
4c3e257b CL |
2451 | .vhost_get_config = vhost_user_get_config, |
2452 | .vhost_set_config = vhost_user_set_config, | |
efbfeb81 GA |
2453 | .vhost_crypto_create_session = vhost_user_crypto_create_session, |
2454 | .vhost_crypto_close_session = vhost_user_crypto_close_session, | |
988a2775 | 2455 | .vhost_backend_mem_section_filter = vhost_user_mem_section_filter, |
5ad204bf XY |
2456 | .vhost_get_inflight_fd = vhost_user_get_inflight_fd, |
2457 | .vhost_set_inflight_fd = vhost_user_set_inflight_fd, | |
fc57fd99 | 2458 | }; |