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8d497515 CY |
1 | /* |
2 | * Intel MIC Platform Software Stack (MPSS) | |
3 | * | |
4 | * Copyright(c) 2013 Intel Corporation. | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License, version 2, as | |
8 | * published by the Free Software Foundation. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, but | |
11 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | * General Public License for more details. | |
14 | * | |
15 | * The full GNU General Public License is included in this distribution in | |
16 | * the file called "COPYING". | |
17 | * | |
18 | * Intel MIC User Space Tools. | |
19 | */ | |
20 | ||
21 | #define _GNU_SOURCE | |
22 | ||
23 | #include <stdlib.h> | |
24 | #include <fcntl.h> | |
25 | #include <getopt.h> | |
26 | #include <assert.h> | |
27 | #include <unistd.h> | |
28 | #include <stdbool.h> | |
29 | #include <signal.h> | |
30 | #include <poll.h> | |
31 | #include <features.h> | |
32 | #include <sys/types.h> | |
33 | #include <sys/stat.h> | |
34 | #include <sys/mman.h> | |
35 | #include <sys/socket.h> | |
36 | #include <linux/virtio_ring.h> | |
37 | #include <linux/virtio_net.h> | |
38 | #include <linux/virtio_console.h> | |
39 | #include <linux/virtio_blk.h> | |
40 | #include <linux/version.h> | |
41 | #include "mpssd.h" | |
42 | #include <linux/mic_ioctl.h> | |
43 | #include <linux/mic_common.h> | |
44 | ||
45 | static void init_mic(struct mic_info *mic); | |
46 | ||
47 | static FILE *logfp; | |
48 | static struct mic_info mic_list; | |
49 | ||
50 | #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0])) | |
51 | ||
52 | #define min_t(type, x, y) ({ \ | |
53 | type __min1 = (x); \ | |
54 | type __min2 = (y); \ | |
55 | __min1 < __min2 ? __min1 : __min2; }) | |
56 | ||
57 | /* align addr on a size boundary - adjust address up/down if needed */ | |
58 | #define _ALIGN_DOWN(addr, size) ((addr)&(~((size)-1))) | |
59 | #define _ALIGN_UP(addr, size) _ALIGN_DOWN(addr + size - 1, size) | |
60 | ||
61 | /* align addr on a size boundary - adjust address up if needed */ | |
62 | #define _ALIGN(addr, size) _ALIGN_UP(addr, size) | |
63 | ||
64 | /* to align the pointer to the (next) page boundary */ | |
65 | #define PAGE_ALIGN(addr) _ALIGN(addr, PAGE_SIZE) | |
66 | ||
67 | #define ACCESS_ONCE(x) (*(volatile typeof(x) *)&(x)) | |
68 | ||
69 | #define GSO_ENABLED 1 | |
70 | #define MAX_GSO_SIZE (64 * 1024) | |
71 | #define ETH_H_LEN 14 | |
72 | #define MAX_NET_PKT_SIZE (_ALIGN_UP(MAX_GSO_SIZE + ETH_H_LEN, 64)) | |
73 | #define MIC_DEVICE_PAGE_END 0x1000 | |
74 | ||
75 | #ifndef VIRTIO_NET_HDR_F_DATA_VALID | |
76 | #define VIRTIO_NET_HDR_F_DATA_VALID 2 /* Csum is valid */ | |
77 | #endif | |
78 | ||
79 | static struct { | |
80 | struct mic_device_desc dd; | |
81 | struct mic_vqconfig vqconfig[2]; | |
82 | __u32 host_features, guest_acknowledgements; | |
83 | struct virtio_console_config cons_config; | |
84 | } virtcons_dev_page = { | |
85 | .dd = { | |
86 | .type = VIRTIO_ID_CONSOLE, | |
87 | .num_vq = ARRAY_SIZE(virtcons_dev_page.vqconfig), | |
88 | .feature_len = sizeof(virtcons_dev_page.host_features), | |
89 | .config_len = sizeof(virtcons_dev_page.cons_config), | |
90 | }, | |
91 | .vqconfig[0] = { | |
92 | .num = htole16(MIC_VRING_ENTRIES), | |
93 | }, | |
94 | .vqconfig[1] = { | |
95 | .num = htole16(MIC_VRING_ENTRIES), | |
96 | }, | |
97 | }; | |
98 | ||
99 | static struct { | |
100 | struct mic_device_desc dd; | |
101 | struct mic_vqconfig vqconfig[2]; | |
102 | __u32 host_features, guest_acknowledgements; | |
103 | struct virtio_net_config net_config; | |
104 | } virtnet_dev_page = { | |
105 | .dd = { | |
106 | .type = VIRTIO_ID_NET, | |
107 | .num_vq = ARRAY_SIZE(virtnet_dev_page.vqconfig), | |
108 | .feature_len = sizeof(virtnet_dev_page.host_features), | |
109 | .config_len = sizeof(virtnet_dev_page.net_config), | |
110 | }, | |
111 | .vqconfig[0] = { | |
112 | .num = htole16(MIC_VRING_ENTRIES), | |
113 | }, | |
114 | .vqconfig[1] = { | |
115 | .num = htole16(MIC_VRING_ENTRIES), | |
116 | }, | |
117 | #if GSO_ENABLED | |
118 | .host_features = htole32( | |
119 | 1 << VIRTIO_NET_F_CSUM | | |
120 | 1 << VIRTIO_NET_F_GSO | | |
121 | 1 << VIRTIO_NET_F_GUEST_TSO4 | | |
122 | 1 << VIRTIO_NET_F_GUEST_TSO6 | | |
123 | 1 << VIRTIO_NET_F_GUEST_ECN | | |
124 | 1 << VIRTIO_NET_F_GUEST_UFO), | |
125 | #else | |
126 | .host_features = 0, | |
127 | #endif | |
128 | }; | |
129 | ||
130 | static const char *mic_config_dir = "/etc/sysconfig/mic"; | |
131 | static const char *virtblk_backend = "VIRTBLK_BACKEND"; | |
132 | static struct { | |
133 | struct mic_device_desc dd; | |
134 | struct mic_vqconfig vqconfig[1]; | |
135 | __u32 host_features, guest_acknowledgements; | |
136 | struct virtio_blk_config blk_config; | |
137 | } virtblk_dev_page = { | |
138 | .dd = { | |
139 | .type = VIRTIO_ID_BLOCK, | |
140 | .num_vq = ARRAY_SIZE(virtblk_dev_page.vqconfig), | |
141 | .feature_len = sizeof(virtblk_dev_page.host_features), | |
142 | .config_len = sizeof(virtblk_dev_page.blk_config), | |
143 | }, | |
144 | .vqconfig[0] = { | |
145 | .num = htole16(MIC_VRING_ENTRIES), | |
146 | }, | |
147 | .host_features = | |
148 | htole32(1<<VIRTIO_BLK_F_SEG_MAX), | |
149 | .blk_config = { | |
150 | .seg_max = htole32(MIC_VRING_ENTRIES - 2), | |
151 | .capacity = htole64(0), | |
152 | } | |
153 | }; | |
154 | ||
155 | static char *myname; | |
156 | ||
157 | static int | |
158 | tap_configure(struct mic_info *mic, char *dev) | |
159 | { | |
160 | pid_t pid; | |
161 | char *ifargv[7]; | |
162 | char ipaddr[IFNAMSIZ]; | |
163 | int ret = 0; | |
164 | ||
165 | pid = fork(); | |
166 | if (pid == 0) { | |
167 | ifargv[0] = "ip"; | |
168 | ifargv[1] = "link"; | |
169 | ifargv[2] = "set"; | |
170 | ifargv[3] = dev; | |
171 | ifargv[4] = "up"; | |
172 | ifargv[5] = NULL; | |
173 | mpsslog("Configuring %s\n", dev); | |
174 | ret = execvp("ip", ifargv); | |
175 | if (ret < 0) { | |
176 | mpsslog("%s execvp failed errno %s\n", | |
177 | mic->name, strerror(errno)); | |
178 | return ret; | |
179 | } | |
180 | } | |
181 | if (pid < 0) { | |
182 | mpsslog("%s fork failed errno %s\n", | |
183 | mic->name, strerror(errno)); | |
184 | return ret; | |
185 | } | |
186 | ||
187 | ret = waitpid(pid, NULL, 0); | |
188 | if (ret < 0) { | |
189 | mpsslog("%s waitpid failed errno %s\n", | |
190 | mic->name, strerror(errno)); | |
191 | return ret; | |
192 | } | |
193 | ||
194 | snprintf(ipaddr, IFNAMSIZ, "172.31.%d.254/24", mic->id); | |
195 | ||
196 | pid = fork(); | |
197 | if (pid == 0) { | |
198 | ifargv[0] = "ip"; | |
199 | ifargv[1] = "addr"; | |
200 | ifargv[2] = "add"; | |
201 | ifargv[3] = ipaddr; | |
202 | ifargv[4] = "dev"; | |
203 | ifargv[5] = dev; | |
204 | ifargv[6] = NULL; | |
205 | mpsslog("Configuring %s ipaddr %s\n", dev, ipaddr); | |
206 | ret = execvp("ip", ifargv); | |
207 | if (ret < 0) { | |
208 | mpsslog("%s execvp failed errno %s\n", | |
209 | mic->name, strerror(errno)); | |
210 | return ret; | |
211 | } | |
212 | } | |
213 | if (pid < 0) { | |
214 | mpsslog("%s fork failed errno %s\n", | |
215 | mic->name, strerror(errno)); | |
216 | return ret; | |
217 | } | |
218 | ||
219 | ret = waitpid(pid, NULL, 0); | |
220 | if (ret < 0) { | |
221 | mpsslog("%s waitpid failed errno %s\n", | |
222 | mic->name, strerror(errno)); | |
223 | return ret; | |
224 | } | |
225 | mpsslog("MIC name %s %s %d DONE!\n", | |
226 | mic->name, __func__, __LINE__); | |
227 | return 0; | |
228 | } | |
229 | ||
230 | static int tun_alloc(struct mic_info *mic, char *dev) | |
231 | { | |
232 | struct ifreq ifr; | |
233 | int fd, err; | |
234 | #if GSO_ENABLED | |
235 | unsigned offload; | |
236 | #endif | |
237 | fd = open("/dev/net/tun", O_RDWR); | |
238 | if (fd < 0) { | |
239 | mpsslog("Could not open /dev/net/tun %s\n", strerror(errno)); | |
240 | goto done; | |
241 | } | |
242 | ||
243 | memset(&ifr, 0, sizeof(ifr)); | |
244 | ||
245 | ifr.ifr_flags = IFF_TAP | IFF_NO_PI | IFF_VNET_HDR; | |
246 | if (*dev) | |
247 | strncpy(ifr.ifr_name, dev, IFNAMSIZ); | |
248 | ||
ced2c60f | 249 | err = ioctl(fd, TUNSETIFF, (void *)&ifr); |
8d497515 CY |
250 | if (err < 0) { |
251 | mpsslog("%s %s %d TUNSETIFF failed %s\n", | |
252 | mic->name, __func__, __LINE__, strerror(errno)); | |
253 | close(fd); | |
254 | return err; | |
255 | } | |
256 | #if GSO_ENABLED | |
257 | offload = TUN_F_CSUM | TUN_F_TSO4 | TUN_F_TSO6 | | |
258 | TUN_F_TSO_ECN | TUN_F_UFO; | |
259 | ||
260 | err = ioctl(fd, TUNSETOFFLOAD, offload); | |
261 | if (err < 0) { | |
262 | mpsslog("%s %s %d TUNSETOFFLOAD failed %s\n", | |
263 | mic->name, __func__, __LINE__, strerror(errno)); | |
264 | close(fd); | |
265 | return err; | |
266 | } | |
267 | #endif | |
268 | strcpy(dev, ifr.ifr_name); | |
269 | mpsslog("Created TAP %s\n", dev); | |
270 | done: | |
271 | return fd; | |
272 | } | |
273 | ||
274 | #define NET_FD_VIRTIO_NET 0 | |
275 | #define NET_FD_TUN 1 | |
276 | #define MAX_NET_FD 2 | |
277 | ||
278 | static void set_dp(struct mic_info *mic, int type, void *dp) | |
279 | { | |
280 | switch (type) { | |
281 | case VIRTIO_ID_CONSOLE: | |
282 | mic->mic_console.console_dp = dp; | |
283 | return; | |
284 | case VIRTIO_ID_NET: | |
285 | mic->mic_net.net_dp = dp; | |
286 | return; | |
287 | case VIRTIO_ID_BLOCK: | |
288 | mic->mic_virtblk.block_dp = dp; | |
289 | return; | |
290 | } | |
291 | mpsslog("%s %s %d not found\n", mic->name, __func__, type); | |
292 | assert(0); | |
293 | } | |
294 | ||
295 | static void *get_dp(struct mic_info *mic, int type) | |
296 | { | |
297 | switch (type) { | |
298 | case VIRTIO_ID_CONSOLE: | |
299 | return mic->mic_console.console_dp; | |
300 | case VIRTIO_ID_NET: | |
301 | return mic->mic_net.net_dp; | |
302 | case VIRTIO_ID_BLOCK: | |
303 | return mic->mic_virtblk.block_dp; | |
304 | } | |
305 | mpsslog("%s %s %d not found\n", mic->name, __func__, type); | |
306 | assert(0); | |
307 | return NULL; | |
308 | } | |
309 | ||
310 | static struct mic_device_desc *get_device_desc(struct mic_info *mic, int type) | |
311 | { | |
312 | struct mic_device_desc *d; | |
313 | int i; | |
314 | void *dp = get_dp(mic, type); | |
315 | ||
1e31aa92 | 316 | for (i = sizeof(struct mic_bootparam); i < PAGE_SIZE; |
8d497515 CY |
317 | i += mic_total_desc_size(d)) { |
318 | d = dp + i; | |
319 | ||
320 | /* End of list */ | |
321 | if (d->type == 0) | |
322 | break; | |
323 | ||
324 | if (d->type == -1) | |
325 | continue; | |
326 | ||
327 | mpsslog("%s %s d-> type %d d %p\n", | |
328 | mic->name, __func__, d->type, d); | |
329 | ||
330 | if (d->type == (__u8)type) | |
331 | return d; | |
332 | } | |
333 | mpsslog("%s %s %d not found\n", mic->name, __func__, type); | |
334 | assert(0); | |
335 | return NULL; | |
336 | } | |
337 | ||
338 | /* See comments in vhost.c for explanation of next_desc() */ | |
339 | static unsigned next_desc(struct vring_desc *desc) | |
340 | { | |
341 | unsigned int next; | |
342 | ||
343 | if (!(le16toh(desc->flags) & VRING_DESC_F_NEXT)) | |
344 | return -1U; | |
345 | next = le16toh(desc->next); | |
346 | return next; | |
347 | } | |
348 | ||
349 | /* Sum up all the IOVEC length */ | |
350 | static ssize_t | |
351 | sum_iovec_len(struct mic_copy_desc *copy) | |
352 | { | |
353 | ssize_t sum = 0; | |
354 | int i; | |
355 | ||
356 | for (i = 0; i < copy->iovcnt; i++) | |
357 | sum += copy->iov[i].iov_len; | |
358 | return sum; | |
359 | } | |
360 | ||
361 | static inline void verify_out_len(struct mic_info *mic, | |
362 | struct mic_copy_desc *copy) | |
363 | { | |
364 | if (copy->out_len != sum_iovec_len(copy)) { | |
6078e0be | 365 | mpsslog("%s %s %d BUG copy->out_len 0x%x len 0x%zx\n", |
ced2c60f | 366 | mic->name, __func__, __LINE__, |
6078e0be | 367 | copy->out_len, sum_iovec_len(copy)); |
8d497515 CY |
368 | assert(copy->out_len == sum_iovec_len(copy)); |
369 | } | |
370 | } | |
371 | ||
372 | /* Display an iovec */ | |
373 | static void | |
374 | disp_iovec(struct mic_info *mic, struct mic_copy_desc *copy, | |
ced2c60f | 375 | const char *s, int line) |
8d497515 CY |
376 | { |
377 | int i; | |
378 | ||
379 | for (i = 0; i < copy->iovcnt; i++) | |
6078e0be | 380 | mpsslog("%s %s %d copy->iov[%d] addr %p len 0x%zx\n", |
8d497515 CY |
381 | mic->name, s, line, i, |
382 | copy->iov[i].iov_base, copy->iov[i].iov_len); | |
383 | } | |
384 | ||
385 | static inline __u16 read_avail_idx(struct mic_vring *vr) | |
386 | { | |
387 | return ACCESS_ONCE(vr->info->avail_idx); | |
388 | } | |
389 | ||
390 | static inline void txrx_prepare(int type, bool tx, struct mic_vring *vr, | |
391 | struct mic_copy_desc *copy, ssize_t len) | |
392 | { | |
393 | copy->vr_idx = tx ? 0 : 1; | |
394 | copy->update_used = true; | |
395 | if (type == VIRTIO_ID_NET) | |
396 | copy->iov[1].iov_len = len - sizeof(struct virtio_net_hdr); | |
397 | else | |
398 | copy->iov[0].iov_len = len; | |
399 | } | |
400 | ||
401 | /* Central API which triggers the copies */ | |
402 | static int | |
403 | mic_virtio_copy(struct mic_info *mic, int fd, | |
ced2c60f | 404 | struct mic_vring *vr, struct mic_copy_desc *copy) |
8d497515 CY |
405 | { |
406 | int ret; | |
407 | ||
408 | ret = ioctl(fd, MIC_VIRTIO_COPY_DESC, copy); | |
409 | if (ret) { | |
410 | mpsslog("%s %s %d errno %s ret %d\n", | |
411 | mic->name, __func__, __LINE__, | |
412 | strerror(errno), ret); | |
413 | } | |
414 | return ret; | |
415 | } | |
416 | ||
417 | /* | |
418 | * This initialization routine requires at least one | |
419 | * vring i.e. vr0. vr1 is optional. | |
420 | */ | |
421 | static void * | |
422 | init_vr(struct mic_info *mic, int fd, int type, | |
423 | struct mic_vring *vr0, struct mic_vring *vr1, int num_vq) | |
424 | { | |
425 | int vr_size; | |
426 | char *va; | |
427 | ||
428 | vr_size = PAGE_ALIGN(vring_size(MIC_VRING_ENTRIES, | |
429 | MIC_VIRTIO_RING_ALIGN) + sizeof(struct _mic_vring_info)); | |
430 | va = mmap(NULL, MIC_DEVICE_PAGE_END + vr_size * num_vq, | |
431 | PROT_READ, MAP_SHARED, fd, 0); | |
432 | if (MAP_FAILED == va) { | |
433 | mpsslog("%s %s %d mmap failed errno %s\n", | |
434 | mic->name, __func__, __LINE__, | |
435 | strerror(errno)); | |
436 | goto done; | |
437 | } | |
438 | set_dp(mic, type, va); | |
439 | vr0->va = (struct mic_vring *)&va[MIC_DEVICE_PAGE_END]; | |
440 | vr0->info = vr0->va + | |
441 | vring_size(MIC_VRING_ENTRIES, MIC_VIRTIO_RING_ALIGN); | |
442 | vring_init(&vr0->vr, | |
ced2c60f | 443 | MIC_VRING_ENTRIES, vr0->va, MIC_VIRTIO_RING_ALIGN); |
8d497515 CY |
444 | mpsslog("%s %s vr0 %p vr0->info %p vr_size 0x%x vring 0x%x ", |
445 | __func__, mic->name, vr0->va, vr0->info, vr_size, | |
446 | vring_size(MIC_VRING_ENTRIES, MIC_VIRTIO_RING_ALIGN)); | |
447 | mpsslog("magic 0x%x expected 0x%x\n", | |
173c0727 AD |
448 | le32toh(vr0->info->magic), MIC_MAGIC + type); |
449 | assert(le32toh(vr0->info->magic) == MIC_MAGIC + type); | |
8d497515 CY |
450 | if (vr1) { |
451 | vr1->va = (struct mic_vring *) | |
452 | &va[MIC_DEVICE_PAGE_END + vr_size]; | |
453 | vr1->info = vr1->va + vring_size(MIC_VRING_ENTRIES, | |
454 | MIC_VIRTIO_RING_ALIGN); | |
455 | vring_init(&vr1->vr, | |
ced2c60f | 456 | MIC_VRING_ENTRIES, vr1->va, MIC_VIRTIO_RING_ALIGN); |
8d497515 CY |
457 | mpsslog("%s %s vr1 %p vr1->info %p vr_size 0x%x vring 0x%x ", |
458 | __func__, mic->name, vr1->va, vr1->info, vr_size, | |
459 | vring_size(MIC_VRING_ENTRIES, MIC_VIRTIO_RING_ALIGN)); | |
460 | mpsslog("magic 0x%x expected 0x%x\n", | |
173c0727 AD |
461 | le32toh(vr1->info->magic), MIC_MAGIC + type + 1); |
462 | assert(le32toh(vr1->info->magic) == MIC_MAGIC + type + 1); | |
8d497515 CY |
463 | } |
464 | done: | |
465 | return va; | |
466 | } | |
467 | ||
468 | static void | |
469 | wait_for_card_driver(struct mic_info *mic, int fd, int type) | |
470 | { | |
471 | struct pollfd pollfd; | |
472 | int err; | |
473 | struct mic_device_desc *desc = get_device_desc(mic, type); | |
474 | ||
475 | pollfd.fd = fd; | |
476 | mpsslog("%s %s Waiting .... desc-> type %d status 0x%x\n", | |
477 | mic->name, __func__, type, desc->status); | |
478 | while (1) { | |
479 | pollfd.events = POLLIN; | |
480 | pollfd.revents = 0; | |
481 | err = poll(&pollfd, 1, -1); | |
482 | if (err < 0) { | |
483 | mpsslog("%s %s poll failed %s\n", | |
484 | mic->name, __func__, strerror(errno)); | |
485 | continue; | |
486 | } | |
487 | ||
488 | if (pollfd.revents) { | |
489 | mpsslog("%s %s Waiting... desc-> type %d status 0x%x\n", | |
490 | mic->name, __func__, type, desc->status); | |
491 | if (desc->status & VIRTIO_CONFIG_S_DRIVER_OK) { | |
492 | mpsslog("%s %s poll.revents %d\n", | |
493 | mic->name, __func__, pollfd.revents); | |
494 | mpsslog("%s %s desc-> type %d status 0x%x\n", | |
495 | mic->name, __func__, type, | |
496 | desc->status); | |
497 | break; | |
498 | } | |
499 | } | |
500 | } | |
501 | } | |
502 | ||
503 | /* Spin till we have some descriptors */ | |
504 | static void | |
505 | spin_for_descriptors(struct mic_info *mic, struct mic_vring *vr) | |
506 | { | |
507 | __u16 avail_idx = read_avail_idx(vr); | |
508 | ||
509 | while (avail_idx == le16toh(ACCESS_ONCE(vr->vr.avail->idx))) { | |
510 | #ifdef DEBUG | |
511 | mpsslog("%s %s waiting for desc avail %d info_avail %d\n", | |
512 | mic->name, __func__, | |
513 | le16toh(vr->vr.avail->idx), vr->info->avail_idx); | |
514 | #endif | |
515 | sched_yield(); | |
516 | } | |
517 | } | |
518 | ||
519 | static void * | |
520 | virtio_net(void *arg) | |
521 | { | |
522 | static __u8 vnet_hdr[2][sizeof(struct virtio_net_hdr)]; | |
1e31aa92 | 523 | static __u8 vnet_buf[2][MAX_NET_PKT_SIZE] __attribute__ ((aligned(64))); |
8d497515 CY |
524 | struct iovec vnet_iov[2][2] = { |
525 | { { .iov_base = vnet_hdr[0], .iov_len = sizeof(vnet_hdr[0]) }, | |
526 | { .iov_base = vnet_buf[0], .iov_len = sizeof(vnet_buf[0]) } }, | |
527 | { { .iov_base = vnet_hdr[1], .iov_len = sizeof(vnet_hdr[1]) }, | |
528 | { .iov_base = vnet_buf[1], .iov_len = sizeof(vnet_buf[1]) } }, | |
529 | }; | |
530 | struct iovec *iov0 = vnet_iov[0], *iov1 = vnet_iov[1]; | |
531 | struct mic_info *mic = (struct mic_info *)arg; | |
532 | char if_name[IFNAMSIZ]; | |
533 | struct pollfd net_poll[MAX_NET_FD]; | |
534 | struct mic_vring tx_vr, rx_vr; | |
535 | struct mic_copy_desc copy; | |
536 | struct mic_device_desc *desc; | |
537 | int err; | |
538 | ||
539 | snprintf(if_name, IFNAMSIZ, "mic%d", mic->id); | |
540 | mic->mic_net.tap_fd = tun_alloc(mic, if_name); | |
541 | if (mic->mic_net.tap_fd < 0) | |
542 | goto done; | |
543 | ||
544 | if (tap_configure(mic, if_name)) | |
545 | goto done; | |
546 | mpsslog("MIC name %s id %d\n", mic->name, mic->id); | |
547 | ||
548 | net_poll[NET_FD_VIRTIO_NET].fd = mic->mic_net.virtio_net_fd; | |
549 | net_poll[NET_FD_VIRTIO_NET].events = POLLIN; | |
550 | net_poll[NET_FD_TUN].fd = mic->mic_net.tap_fd; | |
551 | net_poll[NET_FD_TUN].events = POLLIN; | |
552 | ||
553 | if (MAP_FAILED == init_vr(mic, mic->mic_net.virtio_net_fd, | |
ced2c60f | 554 | VIRTIO_ID_NET, &tx_vr, &rx_vr, |
8d497515 CY |
555 | virtnet_dev_page.dd.num_vq)) { |
556 | mpsslog("%s init_vr failed %s\n", | |
557 | mic->name, strerror(errno)); | |
558 | goto done; | |
559 | } | |
560 | ||
561 | copy.iovcnt = 2; | |
562 | desc = get_device_desc(mic, VIRTIO_ID_NET); | |
563 | ||
564 | while (1) { | |
565 | ssize_t len; | |
566 | ||
567 | net_poll[NET_FD_VIRTIO_NET].revents = 0; | |
568 | net_poll[NET_FD_TUN].revents = 0; | |
569 | ||
570 | /* Start polling for data from tap and virtio net */ | |
571 | err = poll(net_poll, 2, -1); | |
572 | if (err < 0) { | |
573 | mpsslog("%s poll failed %s\n", | |
574 | __func__, strerror(errno)); | |
575 | continue; | |
576 | } | |
577 | if (!(desc->status & VIRTIO_CONFIG_S_DRIVER_OK)) | |
578 | wait_for_card_driver(mic, mic->mic_net.virtio_net_fd, | |
ced2c60f | 579 | VIRTIO_ID_NET); |
8d497515 CY |
580 | /* |
581 | * Check if there is data to be read from TUN and write to | |
582 | * virtio net fd if there is. | |
583 | */ | |
584 | if (net_poll[NET_FD_TUN].revents & POLLIN) { | |
585 | copy.iov = iov0; | |
586 | len = readv(net_poll[NET_FD_TUN].fd, | |
587 | copy.iov, copy.iovcnt); | |
588 | if (len > 0) { | |
589 | struct virtio_net_hdr *hdr | |
ced2c60f | 590 | = (struct virtio_net_hdr *)vnet_hdr[0]; |
8d497515 CY |
591 | |
592 | /* Disable checksums on the card since we are on | |
593 | a reliable PCIe link */ | |
594 | hdr->flags |= VIRTIO_NET_HDR_F_DATA_VALID; | |
595 | #ifdef DEBUG | |
596 | mpsslog("%s %s %d hdr->flags 0x%x ", mic->name, | |
597 | __func__, __LINE__, hdr->flags); | |
598 | mpsslog("copy.out_len %d hdr->gso_type 0x%x\n", | |
599 | copy.out_len, hdr->gso_type); | |
600 | #endif | |
601 | #ifdef DEBUG | |
602 | disp_iovec(mic, copy, __func__, __LINE__); | |
603 | mpsslog("%s %s %d read from tap 0x%lx\n", | |
604 | mic->name, __func__, __LINE__, | |
605 | len); | |
606 | #endif | |
607 | spin_for_descriptors(mic, &tx_vr); | |
608 | txrx_prepare(VIRTIO_ID_NET, 1, &tx_vr, ©, | |
ced2c60f | 609 | len); |
8d497515 CY |
610 | |
611 | err = mic_virtio_copy(mic, | |
612 | mic->mic_net.virtio_net_fd, &tx_vr, | |
613 | ©); | |
614 | if (err < 0) { | |
615 | mpsslog("%s %s %d mic_virtio_copy %s\n", | |
616 | mic->name, __func__, __LINE__, | |
617 | strerror(errno)); | |
618 | } | |
619 | if (!err) | |
620 | verify_out_len(mic, ©); | |
621 | #ifdef DEBUG | |
622 | disp_iovec(mic, copy, __func__, __LINE__); | |
623 | mpsslog("%s %s %d wrote to net 0x%lx\n", | |
624 | mic->name, __func__, __LINE__, | |
625 | sum_iovec_len(©)); | |
626 | #endif | |
627 | /* Reinitialize IOV for next run */ | |
628 | iov0[1].iov_len = MAX_NET_PKT_SIZE; | |
629 | } else if (len < 0) { | |
630 | disp_iovec(mic, ©, __func__, __LINE__); | |
631 | mpsslog("%s %s %d read failed %s ", mic->name, | |
632 | __func__, __LINE__, strerror(errno)); | |
6078e0be | 633 | mpsslog("cnt %d sum %zd\n", |
8d497515 CY |
634 | copy.iovcnt, sum_iovec_len(©)); |
635 | } | |
636 | } | |
637 | ||
638 | /* | |
639 | * Check if there is data to be read from virtio net and | |
640 | * write to TUN if there is. | |
641 | */ | |
642 | if (net_poll[NET_FD_VIRTIO_NET].revents & POLLIN) { | |
643 | while (rx_vr.info->avail_idx != | |
644 | le16toh(rx_vr.vr.avail->idx)) { | |
645 | copy.iov = iov1; | |
646 | txrx_prepare(VIRTIO_ID_NET, 0, &rx_vr, ©, | |
ced2c60f | 647 | MAX_NET_PKT_SIZE |
8d497515 CY |
648 | + sizeof(struct virtio_net_hdr)); |
649 | ||
650 | err = mic_virtio_copy(mic, | |
651 | mic->mic_net.virtio_net_fd, &rx_vr, | |
652 | ©); | |
653 | if (!err) { | |
654 | #ifdef DEBUG | |
655 | struct virtio_net_hdr *hdr | |
656 | = (struct virtio_net_hdr *) | |
657 | vnet_hdr[1]; | |
658 | ||
659 | mpsslog("%s %s %d hdr->flags 0x%x, ", | |
660 | mic->name, __func__, __LINE__, | |
661 | hdr->flags); | |
662 | mpsslog("out_len %d gso_type 0x%x\n", | |
663 | copy.out_len, | |
664 | hdr->gso_type); | |
665 | #endif | |
666 | /* Set the correct output iov_len */ | |
667 | iov1[1].iov_len = copy.out_len - | |
668 | sizeof(struct virtio_net_hdr); | |
669 | verify_out_len(mic, ©); | |
670 | #ifdef DEBUG | |
671 | disp_iovec(mic, copy, __func__, | |
ced2c60f | 672 | __LINE__); |
8d497515 CY |
673 | mpsslog("%s %s %d ", |
674 | mic->name, __func__, __LINE__); | |
675 | mpsslog("read from net 0x%lx\n", | |
676 | sum_iovec_len(copy)); | |
677 | #endif | |
678 | len = writev(net_poll[NET_FD_TUN].fd, | |
679 | copy.iov, copy.iovcnt); | |
680 | if (len != sum_iovec_len(©)) { | |
681 | mpsslog("Tun write failed %s ", | |
682 | strerror(errno)); | |
6078e0be SD |
683 | mpsslog("len 0x%zx ", len); |
684 | mpsslog("read_len 0x%zx\n", | |
8d497515 CY |
685 | sum_iovec_len(©)); |
686 | } else { | |
687 | #ifdef DEBUG | |
688 | disp_iovec(mic, ©, __func__, | |
ced2c60f | 689 | __LINE__); |
8d497515 CY |
690 | mpsslog("%s %s %d ", |
691 | mic->name, __func__, | |
692 | __LINE__); | |
693 | mpsslog("wrote to tap 0x%lx\n", | |
694 | len); | |
695 | #endif | |
696 | } | |
697 | } else { | |
698 | mpsslog("%s %s %d mic_virtio_copy %s\n", | |
699 | mic->name, __func__, __LINE__, | |
700 | strerror(errno)); | |
701 | break; | |
702 | } | |
703 | } | |
704 | } | |
705 | if (net_poll[NET_FD_VIRTIO_NET].revents & POLLERR) | |
706 | mpsslog("%s: %s: POLLERR\n", __func__, mic->name); | |
707 | } | |
708 | done: | |
709 | pthread_exit(NULL); | |
710 | } | |
711 | ||
712 | /* virtio_console */ | |
713 | #define VIRTIO_CONSOLE_FD 0 | |
714 | #define MONITOR_FD (VIRTIO_CONSOLE_FD + 1) | |
715 | #define MAX_CONSOLE_FD (MONITOR_FD + 1) /* must be the last one + 1 */ | |
716 | #define MAX_BUFFER_SIZE PAGE_SIZE | |
717 | ||
718 | static void * | |
719 | virtio_console(void *arg) | |
720 | { | |
721 | static __u8 vcons_buf[2][PAGE_SIZE]; | |
722 | struct iovec vcons_iov[2] = { | |
723 | { .iov_base = vcons_buf[0], .iov_len = sizeof(vcons_buf[0]) }, | |
724 | { .iov_base = vcons_buf[1], .iov_len = sizeof(vcons_buf[1]) }, | |
725 | }; | |
726 | struct iovec *iov0 = &vcons_iov[0], *iov1 = &vcons_iov[1]; | |
727 | struct mic_info *mic = (struct mic_info *)arg; | |
728 | int err; | |
729 | struct pollfd console_poll[MAX_CONSOLE_FD]; | |
730 | int pty_fd; | |
731 | char *pts_name; | |
732 | ssize_t len; | |
733 | struct mic_vring tx_vr, rx_vr; | |
734 | struct mic_copy_desc copy; | |
735 | struct mic_device_desc *desc; | |
736 | ||
737 | pty_fd = posix_openpt(O_RDWR); | |
738 | if (pty_fd < 0) { | |
739 | mpsslog("can't open a pseudoterminal master device: %s\n", | |
740 | strerror(errno)); | |
741 | goto _return; | |
742 | } | |
743 | pts_name = ptsname(pty_fd); | |
744 | if (pts_name == NULL) { | |
745 | mpsslog("can't get pts name\n"); | |
746 | goto _close_pty; | |
747 | } | |
748 | printf("%s console message goes to %s\n", mic->name, pts_name); | |
749 | mpsslog("%s console message goes to %s\n", mic->name, pts_name); | |
750 | err = grantpt(pty_fd); | |
751 | if (err < 0) { | |
752 | mpsslog("can't grant access: %s %s\n", | |
ced2c60f | 753 | pts_name, strerror(errno)); |
8d497515 CY |
754 | goto _close_pty; |
755 | } | |
756 | err = unlockpt(pty_fd); | |
757 | if (err < 0) { | |
758 | mpsslog("can't unlock a pseudoterminal: %s %s\n", | |
ced2c60f | 759 | pts_name, strerror(errno)); |
8d497515 CY |
760 | goto _close_pty; |
761 | } | |
762 | console_poll[MONITOR_FD].fd = pty_fd; | |
763 | console_poll[MONITOR_FD].events = POLLIN; | |
764 | ||
765 | console_poll[VIRTIO_CONSOLE_FD].fd = mic->mic_console.virtio_console_fd; | |
766 | console_poll[VIRTIO_CONSOLE_FD].events = POLLIN; | |
767 | ||
768 | if (MAP_FAILED == init_vr(mic, mic->mic_console.virtio_console_fd, | |
ced2c60f | 769 | VIRTIO_ID_CONSOLE, &tx_vr, &rx_vr, |
8d497515 CY |
770 | virtcons_dev_page.dd.num_vq)) { |
771 | mpsslog("%s init_vr failed %s\n", | |
772 | mic->name, strerror(errno)); | |
773 | goto _close_pty; | |
774 | } | |
775 | ||
776 | copy.iovcnt = 1; | |
777 | desc = get_device_desc(mic, VIRTIO_ID_CONSOLE); | |
778 | ||
779 | for (;;) { | |
780 | console_poll[MONITOR_FD].revents = 0; | |
781 | console_poll[VIRTIO_CONSOLE_FD].revents = 0; | |
782 | err = poll(console_poll, MAX_CONSOLE_FD, -1); | |
783 | if (err < 0) { | |
784 | mpsslog("%s %d: poll failed: %s\n", __func__, __LINE__, | |
785 | strerror(errno)); | |
786 | continue; | |
787 | } | |
788 | if (!(desc->status & VIRTIO_CONFIG_S_DRIVER_OK)) | |
789 | wait_for_card_driver(mic, | |
ced2c60f | 790 | mic->mic_console.virtio_console_fd, |
8d497515 CY |
791 | VIRTIO_ID_CONSOLE); |
792 | ||
793 | if (console_poll[MONITOR_FD].revents & POLLIN) { | |
794 | copy.iov = iov0; | |
795 | len = readv(pty_fd, copy.iov, copy.iovcnt); | |
796 | if (len > 0) { | |
797 | #ifdef DEBUG | |
798 | disp_iovec(mic, copy, __func__, __LINE__); | |
799 | mpsslog("%s %s %d read from tap 0x%lx\n", | |
800 | mic->name, __func__, __LINE__, | |
801 | len); | |
802 | #endif | |
803 | spin_for_descriptors(mic, &tx_vr); | |
804 | txrx_prepare(VIRTIO_ID_CONSOLE, 1, &tx_vr, | |
ced2c60f | 805 | ©, len); |
8d497515 CY |
806 | |
807 | err = mic_virtio_copy(mic, | |
808 | mic->mic_console.virtio_console_fd, | |
809 | &tx_vr, ©); | |
810 | if (err < 0) { | |
811 | mpsslog("%s %s %d mic_virtio_copy %s\n", | |
812 | mic->name, __func__, __LINE__, | |
813 | strerror(errno)); | |
814 | } | |
815 | if (!err) | |
816 | verify_out_len(mic, ©); | |
817 | #ifdef DEBUG | |
818 | disp_iovec(mic, copy, __func__, __LINE__); | |
819 | mpsslog("%s %s %d wrote to net 0x%lx\n", | |
820 | mic->name, __func__, __LINE__, | |
821 | sum_iovec_len(copy)); | |
822 | #endif | |
823 | /* Reinitialize IOV for next run */ | |
824 | iov0->iov_len = PAGE_SIZE; | |
825 | } else if (len < 0) { | |
826 | disp_iovec(mic, ©, __func__, __LINE__); | |
827 | mpsslog("%s %s %d read failed %s ", | |
828 | mic->name, __func__, __LINE__, | |
829 | strerror(errno)); | |
6078e0be | 830 | mpsslog("cnt %d sum %zd\n", |
8d497515 CY |
831 | copy.iovcnt, sum_iovec_len(©)); |
832 | } | |
833 | } | |
834 | ||
835 | if (console_poll[VIRTIO_CONSOLE_FD].revents & POLLIN) { | |
836 | while (rx_vr.info->avail_idx != | |
837 | le16toh(rx_vr.vr.avail->idx)) { | |
838 | copy.iov = iov1; | |
839 | txrx_prepare(VIRTIO_ID_CONSOLE, 0, &rx_vr, | |
ced2c60f | 840 | ©, PAGE_SIZE); |
8d497515 CY |
841 | |
842 | err = mic_virtio_copy(mic, | |
843 | mic->mic_console.virtio_console_fd, | |
844 | &rx_vr, ©); | |
845 | if (!err) { | |
846 | /* Set the correct output iov_len */ | |
847 | iov1->iov_len = copy.out_len; | |
848 | verify_out_len(mic, ©); | |
849 | #ifdef DEBUG | |
850 | disp_iovec(mic, copy, __func__, | |
ced2c60f | 851 | __LINE__); |
8d497515 CY |
852 | mpsslog("%s %s %d ", |
853 | mic->name, __func__, __LINE__); | |
854 | mpsslog("read from net 0x%lx\n", | |
855 | sum_iovec_len(copy)); | |
856 | #endif | |
857 | len = writev(pty_fd, | |
858 | copy.iov, copy.iovcnt); | |
859 | if (len != sum_iovec_len(©)) { | |
860 | mpsslog("Tun write failed %s ", | |
861 | strerror(errno)); | |
6078e0be SD |
862 | mpsslog("len 0x%zx ", len); |
863 | mpsslog("read_len 0x%zx\n", | |
8d497515 CY |
864 | sum_iovec_len(©)); |
865 | } else { | |
866 | #ifdef DEBUG | |
867 | disp_iovec(mic, copy, __func__, | |
ced2c60f | 868 | __LINE__); |
8d497515 CY |
869 | mpsslog("%s %s %d ", |
870 | mic->name, __func__, | |
871 | __LINE__); | |
872 | mpsslog("wrote to tap 0x%lx\n", | |
873 | len); | |
874 | #endif | |
875 | } | |
876 | } else { | |
877 | mpsslog("%s %s %d mic_virtio_copy %s\n", | |
878 | mic->name, __func__, __LINE__, | |
879 | strerror(errno)); | |
880 | break; | |
881 | } | |
882 | } | |
883 | } | |
884 | if (console_poll[NET_FD_VIRTIO_NET].revents & POLLERR) | |
885 | mpsslog("%s: %s: POLLERR\n", __func__, mic->name); | |
886 | } | |
887 | _close_pty: | |
888 | close(pty_fd); | |
889 | _return: | |
890 | pthread_exit(NULL); | |
891 | } | |
892 | ||
893 | static void | |
894 | add_virtio_device(struct mic_info *mic, struct mic_device_desc *dd) | |
895 | { | |
896 | char path[PATH_MAX]; | |
897 | int fd, err; | |
898 | ||
899 | snprintf(path, PATH_MAX, "/dev/mic%d", mic->id); | |
900 | fd = open(path, O_RDWR); | |
901 | if (fd < 0) { | |
902 | mpsslog("Could not open %s %s\n", path, strerror(errno)); | |
903 | return; | |
904 | } | |
905 | ||
906 | err = ioctl(fd, MIC_VIRTIO_ADD_DEVICE, dd); | |
907 | if (err < 0) { | |
908 | mpsslog("Could not add %d %s\n", dd->type, strerror(errno)); | |
909 | close(fd); | |
910 | return; | |
911 | } | |
912 | switch (dd->type) { | |
913 | case VIRTIO_ID_NET: | |
914 | mic->mic_net.virtio_net_fd = fd; | |
915 | mpsslog("Added VIRTIO_ID_NET for %s\n", mic->name); | |
916 | break; | |
917 | case VIRTIO_ID_CONSOLE: | |
918 | mic->mic_console.virtio_console_fd = fd; | |
919 | mpsslog("Added VIRTIO_ID_CONSOLE for %s\n", mic->name); | |
920 | break; | |
921 | case VIRTIO_ID_BLOCK: | |
922 | mic->mic_virtblk.virtio_block_fd = fd; | |
923 | mpsslog("Added VIRTIO_ID_BLOCK for %s\n", mic->name); | |
924 | break; | |
925 | } | |
926 | } | |
927 | ||
928 | static bool | |
929 | set_backend_file(struct mic_info *mic) | |
930 | { | |
931 | FILE *config; | |
932 | char buff[PATH_MAX], *line, *evv, *p; | |
933 | ||
934 | snprintf(buff, PATH_MAX, "%s/mpssd%03d.conf", mic_config_dir, mic->id); | |
935 | config = fopen(buff, "r"); | |
936 | if (config == NULL) | |
937 | return false; | |
938 | do { /* look for "virtblk_backend=XXXX" */ | |
939 | line = fgets(buff, PATH_MAX, config); | |
940 | if (line == NULL) | |
941 | break; | |
942 | if (*line == '#') | |
943 | continue; | |
944 | p = strchr(line, '\n'); | |
945 | if (p) | |
946 | *p = '\0'; | |
947 | } while (strncmp(line, virtblk_backend, strlen(virtblk_backend)) != 0); | |
948 | fclose(config); | |
949 | if (line == NULL) | |
950 | return false; | |
951 | evv = strchr(line, '='); | |
952 | if (evv == NULL) | |
953 | return false; | |
954 | mic->mic_virtblk.backend_file = malloc(strlen(evv) + 1); | |
955 | if (mic->mic_virtblk.backend_file == NULL) { | |
6078e0be | 956 | mpsslog("%s %d can't allocate memory\n", mic->name, mic->id); |
8d497515 CY |
957 | return false; |
958 | } | |
959 | strcpy(mic->mic_virtblk.backend_file, evv + 1); | |
960 | return true; | |
961 | } | |
962 | ||
963 | #define SECTOR_SIZE 512 | |
964 | static bool | |
965 | set_backend_size(struct mic_info *mic) | |
966 | { | |
967 | mic->mic_virtblk.backend_size = lseek(mic->mic_virtblk.backend, 0, | |
968 | SEEK_END); | |
969 | if (mic->mic_virtblk.backend_size < 0) { | |
970 | mpsslog("%s: can't seek: %s\n", | |
971 | mic->name, mic->mic_virtblk.backend_file); | |
972 | return false; | |
973 | } | |
974 | virtblk_dev_page.blk_config.capacity = | |
975 | mic->mic_virtblk.backend_size / SECTOR_SIZE; | |
976 | if ((mic->mic_virtblk.backend_size % SECTOR_SIZE) != 0) | |
977 | virtblk_dev_page.blk_config.capacity++; | |
978 | ||
979 | virtblk_dev_page.blk_config.capacity = | |
980 | htole64(virtblk_dev_page.blk_config.capacity); | |
981 | ||
982 | return true; | |
983 | } | |
984 | ||
985 | static bool | |
986 | open_backend(struct mic_info *mic) | |
987 | { | |
988 | if (!set_backend_file(mic)) | |
989 | goto _error_exit; | |
990 | mic->mic_virtblk.backend = open(mic->mic_virtblk.backend_file, O_RDWR); | |
991 | if (mic->mic_virtblk.backend < 0) { | |
992 | mpsslog("%s: can't open: %s\n", mic->name, | |
993 | mic->mic_virtblk.backend_file); | |
994 | goto _error_free; | |
995 | } | |
996 | if (!set_backend_size(mic)) | |
997 | goto _error_close; | |
998 | mic->mic_virtblk.backend_addr = mmap(NULL, | |
999 | mic->mic_virtblk.backend_size, | |
1000 | PROT_READ|PROT_WRITE, MAP_SHARED, | |
1001 | mic->mic_virtblk.backend, 0L); | |
1002 | if (mic->mic_virtblk.backend_addr == MAP_FAILED) { | |
1003 | mpsslog("%s: can't map: %s %s\n", | |
1004 | mic->name, mic->mic_virtblk.backend_file, | |
1005 | strerror(errno)); | |
1006 | goto _error_close; | |
1007 | } | |
1008 | return true; | |
1009 | ||
1010 | _error_close: | |
1011 | close(mic->mic_virtblk.backend); | |
1012 | _error_free: | |
1013 | free(mic->mic_virtblk.backend_file); | |
1014 | _error_exit: | |
1015 | return false; | |
1016 | } | |
1017 | ||
1018 | static void | |
1019 | close_backend(struct mic_info *mic) | |
1020 | { | |
1021 | munmap(mic->mic_virtblk.backend_addr, mic->mic_virtblk.backend_size); | |
1022 | close(mic->mic_virtblk.backend); | |
1023 | free(mic->mic_virtblk.backend_file); | |
1024 | } | |
1025 | ||
1026 | static bool | |
1027 | start_virtblk(struct mic_info *mic, struct mic_vring *vring) | |
1028 | { | |
6078e0be | 1029 | if (((unsigned long)&virtblk_dev_page.blk_config % 8) != 0) { |
8d497515 CY |
1030 | mpsslog("%s: blk_config is not 8 byte aligned.\n", |
1031 | mic->name); | |
1032 | return false; | |
1033 | } | |
1034 | add_virtio_device(mic, &virtblk_dev_page.dd); | |
1035 | if (MAP_FAILED == init_vr(mic, mic->mic_virtblk.virtio_block_fd, | |
ced2c60f AD |
1036 | VIRTIO_ID_BLOCK, vring, NULL, |
1037 | virtblk_dev_page.dd.num_vq)) { | |
8d497515 CY |
1038 | mpsslog("%s init_vr failed %s\n", |
1039 | mic->name, strerror(errno)); | |
1040 | return false; | |
1041 | } | |
1042 | return true; | |
1043 | } | |
1044 | ||
1045 | static void | |
1046 | stop_virtblk(struct mic_info *mic) | |
1047 | { | |
1048 | int vr_size, ret; | |
1049 | ||
1050 | vr_size = PAGE_ALIGN(vring_size(MIC_VRING_ENTRIES, | |
1051 | MIC_VIRTIO_RING_ALIGN) + sizeof(struct _mic_vring_info)); | |
1052 | ret = munmap(mic->mic_virtblk.block_dp, | |
1053 | MIC_DEVICE_PAGE_END + vr_size * virtblk_dev_page.dd.num_vq); | |
1054 | if (ret < 0) | |
1055 | mpsslog("%s munmap errno %d\n", mic->name, errno); | |
1056 | close(mic->mic_virtblk.virtio_block_fd); | |
1057 | } | |
1058 | ||
1059 | static __u8 | |
1060 | header_error_check(struct vring_desc *desc) | |
1061 | { | |
1062 | if (le32toh(desc->len) != sizeof(struct virtio_blk_outhdr)) { | |
1063 | mpsslog("%s() %d: length is not sizeof(virtio_blk_outhd)\n", | |
ced2c60f | 1064 | __func__, __LINE__); |
8d497515 CY |
1065 | return -EIO; |
1066 | } | |
1067 | if (!(le16toh(desc->flags) & VRING_DESC_F_NEXT)) { | |
1068 | mpsslog("%s() %d: alone\n", | |
1069 | __func__, __LINE__); | |
1070 | return -EIO; | |
1071 | } | |
1072 | if (le16toh(desc->flags) & VRING_DESC_F_WRITE) { | |
1073 | mpsslog("%s() %d: not read\n", | |
1074 | __func__, __LINE__); | |
1075 | return -EIO; | |
1076 | } | |
1077 | return 0; | |
1078 | } | |
1079 | ||
1080 | static int | |
1081 | read_header(int fd, struct virtio_blk_outhdr *hdr, __u32 desc_idx) | |
1082 | { | |
1083 | struct iovec iovec; | |
1084 | struct mic_copy_desc copy; | |
1085 | ||
1086 | iovec.iov_len = sizeof(*hdr); | |
1087 | iovec.iov_base = hdr; | |
1088 | copy.iov = &iovec; | |
1089 | copy.iovcnt = 1; | |
1090 | copy.vr_idx = 0; /* only one vring on virtio_block */ | |
1091 | copy.update_used = false; /* do not update used index */ | |
1092 | return ioctl(fd, MIC_VIRTIO_COPY_DESC, ©); | |
1093 | } | |
1094 | ||
1095 | static int | |
1096 | transfer_blocks(int fd, struct iovec *iovec, __u32 iovcnt) | |
1097 | { | |
1098 | struct mic_copy_desc copy; | |
1099 | ||
1100 | copy.iov = iovec; | |
1101 | copy.iovcnt = iovcnt; | |
1102 | copy.vr_idx = 0; /* only one vring on virtio_block */ | |
1103 | copy.update_used = false; /* do not update used index */ | |
1104 | return ioctl(fd, MIC_VIRTIO_COPY_DESC, ©); | |
1105 | } | |
1106 | ||
1107 | static __u8 | |
1108 | status_error_check(struct vring_desc *desc) | |
1109 | { | |
1110 | if (le32toh(desc->len) != sizeof(__u8)) { | |
1111 | mpsslog("%s() %d: length is not sizeof(status)\n", | |
1112 | __func__, __LINE__); | |
1113 | return -EIO; | |
1114 | } | |
1115 | return 0; | |
1116 | } | |
1117 | ||
1118 | static int | |
1119 | write_status(int fd, __u8 *status) | |
1120 | { | |
1121 | struct iovec iovec; | |
1122 | struct mic_copy_desc copy; | |
1123 | ||
1124 | iovec.iov_base = status; | |
1125 | iovec.iov_len = sizeof(*status); | |
1126 | copy.iov = &iovec; | |
1127 | copy.iovcnt = 1; | |
1128 | copy.vr_idx = 0; /* only one vring on virtio_block */ | |
1129 | copy.update_used = true; /* Update used index */ | |
1130 | return ioctl(fd, MIC_VIRTIO_COPY_DESC, ©); | |
1131 | } | |
1132 | ||
1133 | static void * | |
1134 | virtio_block(void *arg) | |
1135 | { | |
ced2c60f | 1136 | struct mic_info *mic = (struct mic_info *)arg; |
8d497515 CY |
1137 | int ret; |
1138 | struct pollfd block_poll; | |
1139 | struct mic_vring vring; | |
1140 | __u16 avail_idx; | |
1141 | __u32 desc_idx; | |
1142 | struct vring_desc *desc; | |
1143 | struct iovec *iovec, *piov; | |
1144 | __u8 status; | |
1145 | __u32 buffer_desc_idx; | |
1146 | struct virtio_blk_outhdr hdr; | |
1147 | void *fos; | |
1148 | ||
1149 | for (;;) { /* forever */ | |
1150 | if (!open_backend(mic)) { /* No virtblk */ | |
1151 | for (mic->mic_virtblk.signaled = 0; | |
1152 | !mic->mic_virtblk.signaled;) | |
1153 | sleep(1); | |
1154 | continue; | |
1155 | } | |
1156 | ||
1157 | /* backend file is specified. */ | |
1158 | if (!start_virtblk(mic, &vring)) | |
1159 | goto _close_backend; | |
1160 | iovec = malloc(sizeof(*iovec) * | |
1161 | le32toh(virtblk_dev_page.blk_config.seg_max)); | |
1162 | if (!iovec) { | |
1163 | mpsslog("%s: can't alloc iovec: %s\n", | |
1164 | mic->name, strerror(ENOMEM)); | |
1165 | goto _stop_virtblk; | |
1166 | } | |
1167 | ||
1168 | block_poll.fd = mic->mic_virtblk.virtio_block_fd; | |
1169 | block_poll.events = POLLIN; | |
1170 | for (mic->mic_virtblk.signaled = 0; | |
1171 | !mic->mic_virtblk.signaled;) { | |
1172 | block_poll.revents = 0; | |
1173 | /* timeout in 1 sec to see signaled */ | |
1174 | ret = poll(&block_poll, 1, 1000); | |
1175 | if (ret < 0) { | |
1176 | mpsslog("%s %d: poll failed: %s\n", | |
1177 | __func__, __LINE__, | |
1178 | strerror(errno)); | |
1179 | continue; | |
1180 | } | |
1181 | ||
1182 | if (!(block_poll.revents & POLLIN)) { | |
1183 | #ifdef DEBUG | |
1184 | mpsslog("%s %d: block_poll.revents=0x%x\n", | |
1185 | __func__, __LINE__, block_poll.revents); | |
1186 | #endif | |
1187 | continue; | |
1188 | } | |
1189 | ||
1190 | /* POLLIN */ | |
1191 | while (vring.info->avail_idx != | |
1192 | le16toh(vring.vr.avail->idx)) { | |
1193 | /* read header element */ | |
1194 | avail_idx = | |
1195 | vring.info->avail_idx & | |
1196 | (vring.vr.num - 1); | |
1197 | desc_idx = le16toh( | |
1198 | vring.vr.avail->ring[avail_idx]); | |
1199 | desc = &vring.vr.desc[desc_idx]; | |
1200 | #ifdef DEBUG | |
1201 | mpsslog("%s() %d: avail_idx=%d ", | |
1202 | __func__, __LINE__, | |
1203 | vring.info->avail_idx); | |
1204 | mpsslog("vring.vr.num=%d desc=%p\n", | |
1205 | vring.vr.num, desc); | |
1206 | #endif | |
1207 | status = header_error_check(desc); | |
1208 | ret = read_header( | |
1209 | mic->mic_virtblk.virtio_block_fd, | |
1210 | &hdr, desc_idx); | |
1211 | if (ret < 0) { | |
1212 | mpsslog("%s() %d %s: ret=%d %s\n", | |
1213 | __func__, __LINE__, | |
1214 | mic->name, ret, | |
1215 | strerror(errno)); | |
1216 | break; | |
1217 | } | |
1218 | /* buffer element */ | |
1219 | piov = iovec; | |
1220 | status = 0; | |
1221 | fos = mic->mic_virtblk.backend_addr + | |
1222 | (hdr.sector * SECTOR_SIZE); | |
ced2c60f AD |
1223 | buffer_desc_idx = next_desc(desc); |
1224 | desc_idx = buffer_desc_idx; | |
8d497515 CY |
1225 | for (desc = &vring.vr.desc[buffer_desc_idx]; |
1226 | desc->flags & VRING_DESC_F_NEXT; | |
1227 | desc_idx = next_desc(desc), | |
1228 | desc = &vring.vr.desc[desc_idx]) { | |
1229 | piov->iov_len = desc->len; | |
1230 | piov->iov_base = fos; | |
1231 | piov++; | |
1232 | fos += desc->len; | |
1233 | } | |
1234 | /* Returning NULLs for VIRTIO_BLK_T_GET_ID. */ | |
1235 | if (hdr.type & ~(VIRTIO_BLK_T_OUT | | |
1236 | VIRTIO_BLK_T_GET_ID)) { | |
1237 | /* | |
1238 | VIRTIO_BLK_T_IN - does not do | |
1239 | anything. Probably for documenting. | |
1240 | VIRTIO_BLK_T_SCSI_CMD - for | |
1241 | virtio_scsi. | |
1242 | VIRTIO_BLK_T_FLUSH - turned off in | |
1243 | config space. | |
1244 | VIRTIO_BLK_T_BARRIER - defined but not | |
1245 | used in anywhere. | |
1246 | */ | |
1247 | mpsslog("%s() %d: type %x ", | |
1248 | __func__, __LINE__, | |
1249 | hdr.type); | |
1250 | mpsslog("is not supported\n"); | |
1251 | status = -ENOTSUP; | |
1252 | ||
1253 | } else { | |
1254 | ret = transfer_blocks( | |
1255 | mic->mic_virtblk.virtio_block_fd, | |
1256 | iovec, | |
1257 | piov - iovec); | |
1258 | if (ret < 0 && | |
ced2c60f | 1259 | status != 0) |
8d497515 CY |
1260 | status = ret; |
1261 | } | |
1262 | /* write status and update used pointer */ | |
1263 | if (status != 0) | |
1264 | status = status_error_check(desc); | |
1265 | ret = write_status( | |
1266 | mic->mic_virtblk.virtio_block_fd, | |
1267 | &status); | |
1268 | #ifdef DEBUG | |
1269 | mpsslog("%s() %d: write status=%d on desc=%p\n", | |
1270 | __func__, __LINE__, | |
1271 | status, desc); | |
1272 | #endif | |
1273 | } | |
1274 | } | |
1275 | free(iovec); | |
1276 | _stop_virtblk: | |
1277 | stop_virtblk(mic); | |
1278 | _close_backend: | |
1279 | close_backend(mic); | |
1280 | } /* forever */ | |
1281 | ||
1282 | pthread_exit(NULL); | |
1283 | } | |
1284 | ||
1285 | static void | |
1286 | reset(struct mic_info *mic) | |
1287 | { | |
1288 | #define RESET_TIMEOUT 120 | |
1289 | int i = RESET_TIMEOUT; | |
1290 | setsysfs(mic->name, "state", "reset"); | |
1291 | while (i) { | |
1292 | char *state; | |
1293 | state = readsysfs(mic->name, "state"); | |
1294 | if (!state) | |
1295 | goto retry; | |
1296 | mpsslog("%s: %s %d state %s\n", | |
1297 | mic->name, __func__, __LINE__, state); | |
af190494 DC |
1298 | |
1299 | /* | |
1300 | * If the shutdown was initiated by OSPM, the state stays | |
1301 | * in "suspended" which is also a valid condition for reset. | |
1302 | */ | |
1303 | if ((!strcmp(state, "offline")) || | |
1304 | (!strcmp(state, "suspended"))) { | |
8d497515 CY |
1305 | free(state); |
1306 | break; | |
1307 | } | |
1308 | free(state); | |
1309 | retry: | |
1310 | sleep(1); | |
1311 | i--; | |
1312 | } | |
1313 | } | |
1314 | ||
1315 | static int | |
1316 | get_mic_shutdown_status(struct mic_info *mic, char *shutdown_status) | |
1317 | { | |
1318 | if (!strcmp(shutdown_status, "nop")) | |
1319 | return MIC_NOP; | |
1320 | if (!strcmp(shutdown_status, "crashed")) | |
1321 | return MIC_CRASHED; | |
1322 | if (!strcmp(shutdown_status, "halted")) | |
1323 | return MIC_HALTED; | |
1324 | if (!strcmp(shutdown_status, "poweroff")) | |
1325 | return MIC_POWER_OFF; | |
1326 | if (!strcmp(shutdown_status, "restart")) | |
1327 | return MIC_RESTART; | |
1328 | mpsslog("%s: BUG invalid status %s\n", mic->name, shutdown_status); | |
1329 | /* Invalid state */ | |
1330 | assert(0); | |
1331 | }; | |
1332 | ||
1333 | static int get_mic_state(struct mic_info *mic, char *state) | |
1334 | { | |
1335 | if (!strcmp(state, "offline")) | |
1336 | return MIC_OFFLINE; | |
1337 | if (!strcmp(state, "online")) | |
1338 | return MIC_ONLINE; | |
1339 | if (!strcmp(state, "shutting_down")) | |
1340 | return MIC_SHUTTING_DOWN; | |
1341 | if (!strcmp(state, "reset_failed")) | |
1342 | return MIC_RESET_FAILED; | |
af190494 DC |
1343 | if (!strcmp(state, "suspending")) |
1344 | return MIC_SUSPENDING; | |
1345 | if (!strcmp(state, "suspended")) | |
1346 | return MIC_SUSPENDED; | |
8d497515 CY |
1347 | mpsslog("%s: BUG invalid state %s\n", mic->name, state); |
1348 | /* Invalid state */ | |
1349 | assert(0); | |
1350 | }; | |
1351 | ||
1352 | static void mic_handle_shutdown(struct mic_info *mic) | |
1353 | { | |
1354 | #define SHUTDOWN_TIMEOUT 60 | |
1355 | int i = SHUTDOWN_TIMEOUT, ret, stat = 0; | |
1356 | char *shutdown_status; | |
1357 | while (i) { | |
1358 | shutdown_status = readsysfs(mic->name, "shutdown_status"); | |
1359 | if (!shutdown_status) | |
1360 | continue; | |
1361 | mpsslog("%s: %s %d shutdown_status %s\n", | |
1362 | mic->name, __func__, __LINE__, shutdown_status); | |
1363 | switch (get_mic_shutdown_status(mic, shutdown_status)) { | |
1364 | case MIC_RESTART: | |
1365 | mic->restart = 1; | |
1366 | case MIC_HALTED: | |
1367 | case MIC_POWER_OFF: | |
1368 | case MIC_CRASHED: | |
1369 | free(shutdown_status); | |
1370 | goto reset; | |
1371 | default: | |
1372 | break; | |
1373 | } | |
1374 | free(shutdown_status); | |
1375 | sleep(1); | |
1376 | i--; | |
1377 | } | |
1378 | reset: | |
1379 | ret = kill(mic->pid, SIGTERM); | |
1380 | mpsslog("%s: %s %d kill pid %d ret %d\n", | |
1381 | mic->name, __func__, __LINE__, | |
1382 | mic->pid, ret); | |
1383 | if (!ret) { | |
1384 | ret = waitpid(mic->pid, &stat, | |
1385 | WIFSIGNALED(stat)); | |
1386 | mpsslog("%s: %s %d waitpid ret %d pid %d\n", | |
1387 | mic->name, __func__, __LINE__, | |
1388 | ret, mic->pid); | |
1389 | } | |
1390 | if (ret == mic->pid) | |
1391 | reset(mic); | |
1392 | } | |
1393 | ||
1394 | static void * | |
1395 | mic_config(void *arg) | |
1396 | { | |
1397 | struct mic_info *mic = (struct mic_info *)arg; | |
1398 | char *state = NULL; | |
1399 | char pathname[PATH_MAX]; | |
1400 | int fd, ret; | |
1401 | struct pollfd ufds[1]; | |
1402 | char value[4096]; | |
1403 | ||
1404 | snprintf(pathname, PATH_MAX - 1, "%s/%s/%s", | |
ced2c60f | 1405 | MICSYSFSDIR, mic->name, "state"); |
8d497515 CY |
1406 | |
1407 | fd = open(pathname, O_RDONLY); | |
1408 | if (fd < 0) { | |
1409 | mpsslog("%s: opening file %s failed %s\n", | |
1410 | mic->name, pathname, strerror(errno)); | |
1411 | goto error; | |
1412 | } | |
1413 | ||
1414 | do { | |
286c2402 AD |
1415 | ret = lseek(fd, 0, SEEK_SET); |
1416 | if (ret < 0) { | |
1417 | mpsslog("%s: Failed to seek to file start '%s': %s\n", | |
1418 | mic->name, pathname, strerror(errno)); | |
1419 | goto close_error1; | |
1420 | } | |
8d497515 CY |
1421 | ret = read(fd, value, sizeof(value)); |
1422 | if (ret < 0) { | |
1423 | mpsslog("%s: Failed to read sysfs entry '%s': %s\n", | |
1424 | mic->name, pathname, strerror(errno)); | |
1425 | goto close_error1; | |
1426 | } | |
1427 | retry: | |
1428 | state = readsysfs(mic->name, "state"); | |
1429 | if (!state) | |
1430 | goto retry; | |
1431 | mpsslog("%s: %s %d state %s\n", | |
1432 | mic->name, __func__, __LINE__, state); | |
1433 | switch (get_mic_state(mic, state)) { | |
1434 | case MIC_SHUTTING_DOWN: | |
1435 | mic_handle_shutdown(mic); | |
1436 | goto close_error; | |
af190494 DC |
1437 | case MIC_SUSPENDING: |
1438 | mic->boot_on_resume = 1; | |
1439 | setsysfs(mic->name, "state", "suspend"); | |
1440 | mic_handle_shutdown(mic); | |
1441 | goto close_error; | |
1442 | case MIC_OFFLINE: | |
1443 | if (mic->boot_on_resume) { | |
1444 | setsysfs(mic->name, "state", "boot"); | |
1445 | mic->boot_on_resume = 0; | |
1446 | } | |
1447 | break; | |
8d497515 CY |
1448 | default: |
1449 | break; | |
1450 | } | |
1451 | free(state); | |
1452 | ||
1453 | ufds[0].fd = fd; | |
1454 | ufds[0].events = POLLERR | POLLPRI; | |
1455 | ret = poll(ufds, 1, -1); | |
1456 | if (ret < 0) { | |
1457 | mpsslog("%s: poll failed %s\n", | |
1458 | mic->name, strerror(errno)); | |
1459 | goto close_error1; | |
1460 | } | |
1461 | } while (1); | |
1462 | close_error: | |
1463 | free(state); | |
1464 | close_error1: | |
1465 | close(fd); | |
1466 | error: | |
1467 | init_mic(mic); | |
1468 | pthread_exit(NULL); | |
1469 | } | |
1470 | ||
1471 | static void | |
1472 | set_cmdline(struct mic_info *mic) | |
1473 | { | |
1474 | char buffer[PATH_MAX]; | |
1475 | int len; | |
1476 | ||
1477 | len = snprintf(buffer, PATH_MAX, | |
1478 | "clocksource=tsc highres=off nohz=off "); | |
1479 | len += snprintf(buffer + len, PATH_MAX, | |
1480 | "cpufreq_on;corec6_off;pc3_off;pc6_off "); | |
1481 | len += snprintf(buffer + len, PATH_MAX, | |
1482 | "ifcfg=static;address,172.31.%d.1;netmask,255.255.255.0", | |
1483 | mic->id); | |
1484 | ||
1485 | setsysfs(mic->name, "cmdline", buffer); | |
1486 | mpsslog("%s: Command line: \"%s\"\n", mic->name, buffer); | |
1487 | snprintf(buffer, PATH_MAX, "172.31.%d.1", mic->id); | |
1488 | mpsslog("%s: IPADDR: \"%s\"\n", mic->name, buffer); | |
1489 | } | |
1490 | ||
1491 | static void | |
1492 | set_log_buf_info(struct mic_info *mic) | |
1493 | { | |
1494 | int fd; | |
1495 | off_t len; | |
1496 | char system_map[] = "/lib/firmware/mic/System.map"; | |
1497 | char *map, *temp, log_buf[17] = {'\0'}; | |
1498 | ||
1499 | fd = open(system_map, O_RDONLY); | |
1500 | if (fd < 0) { | |
1501 | mpsslog("%s: Opening System.map failed: %d\n", | |
1502 | mic->name, errno); | |
1503 | return; | |
1504 | } | |
1505 | len = lseek(fd, 0, SEEK_END); | |
1506 | if (len < 0) { | |
1507 | mpsslog("%s: Reading System.map size failed: %d\n", | |
1508 | mic->name, errno); | |
1509 | close(fd); | |
1510 | return; | |
1511 | } | |
1512 | map = mmap(NULL, len, PROT_READ, MAP_PRIVATE, fd, 0); | |
1513 | if (map == MAP_FAILED) { | |
1514 | mpsslog("%s: mmap of System.map failed: %d\n", | |
1515 | mic->name, errno); | |
1516 | close(fd); | |
1517 | return; | |
1518 | } | |
1519 | temp = strstr(map, "__log_buf"); | |
1520 | if (!temp) { | |
1521 | mpsslog("%s: __log_buf not found: %d\n", mic->name, errno); | |
1522 | munmap(map, len); | |
1523 | close(fd); | |
1524 | return; | |
1525 | } | |
1526 | strncpy(log_buf, temp - 19, 16); | |
1527 | setsysfs(mic->name, "log_buf_addr", log_buf); | |
1528 | mpsslog("%s: log_buf_addr: %s\n", mic->name, log_buf); | |
1529 | temp = strstr(map, "log_buf_len"); | |
1530 | if (!temp) { | |
1531 | mpsslog("%s: log_buf_len not found: %d\n", mic->name, errno); | |
1532 | munmap(map, len); | |
1533 | close(fd); | |
1534 | return; | |
1535 | } | |
1536 | strncpy(log_buf, temp - 19, 16); | |
1537 | setsysfs(mic->name, "log_buf_len", log_buf); | |
1538 | mpsslog("%s: log_buf_len: %s\n", mic->name, log_buf); | |
1539 | munmap(map, len); | |
1540 | close(fd); | |
1541 | } | |
1542 | ||
1543 | static void init_mic(struct mic_info *mic); | |
1544 | ||
1545 | static void | |
1546 | change_virtblk_backend(int x, siginfo_t *siginfo, void *p) | |
1547 | { | |
1548 | struct mic_info *mic; | |
1549 | ||
1550 | for (mic = mic_list.next; mic != NULL; mic = mic->next) | |
1551 | mic->mic_virtblk.signaled = 1/* true */; | |
1552 | } | |
1553 | ||
1554 | static void | |
1555 | init_mic(struct mic_info *mic) | |
1556 | { | |
1557 | struct sigaction ignore = { | |
1558 | .sa_flags = 0, | |
1559 | .sa_handler = SIG_IGN | |
1560 | }; | |
1561 | struct sigaction act = { | |
1562 | .sa_flags = SA_SIGINFO, | |
1563 | .sa_sigaction = change_virtblk_backend, | |
1564 | }; | |
1565 | char buffer[PATH_MAX]; | |
1566 | int err; | |
1567 | ||
1568 | /* | |
1569 | * Currently, one virtio block device is supported for each MIC card | |
1570 | * at a time. Any user (or test) can send a SIGUSR1 to the MIC daemon. | |
1571 | * The signal informs the virtio block backend about a change in the | |
1572 | * configuration file which specifies the virtio backend file name on | |
1573 | * the host. Virtio block backend then re-reads the configuration file | |
1574 | * and switches to the new block device. This signalling mechanism may | |
1575 | * not be required once multiple virtio block devices are supported by | |
1576 | * the MIC daemon. | |
1577 | */ | |
1578 | sigaction(SIGUSR1, &ignore, NULL); | |
1579 | ||
1580 | mic->pid = fork(); | |
1581 | switch (mic->pid) { | |
1582 | case 0: | |
1583 | set_log_buf_info(mic); | |
1584 | set_cmdline(mic); | |
1585 | add_virtio_device(mic, &virtcons_dev_page.dd); | |
1586 | add_virtio_device(mic, &virtnet_dev_page.dd); | |
1587 | err = pthread_create(&mic->mic_console.console_thread, NULL, | |
1588 | virtio_console, mic); | |
1589 | if (err) | |
1590 | mpsslog("%s virtcons pthread_create failed %s\n", | |
ced2c60f | 1591 | mic->name, strerror(err)); |
8d497515 CY |
1592 | err = pthread_create(&mic->mic_net.net_thread, NULL, |
1593 | virtio_net, mic); | |
1594 | if (err) | |
1595 | mpsslog("%s virtnet pthread_create failed %s\n", | |
ced2c60f | 1596 | mic->name, strerror(err)); |
8d497515 CY |
1597 | err = pthread_create(&mic->mic_virtblk.block_thread, NULL, |
1598 | virtio_block, mic); | |
1599 | if (err) | |
1600 | mpsslog("%s virtblk pthread_create failed %s\n", | |
ced2c60f | 1601 | mic->name, strerror(err)); |
8d497515 CY |
1602 | sigemptyset(&act.sa_mask); |
1603 | err = sigaction(SIGUSR1, &act, NULL); | |
1604 | if (err) | |
1605 | mpsslog("%s sigaction SIGUSR1 failed %s\n", | |
ced2c60f | 1606 | mic->name, strerror(errno)); |
8d497515 CY |
1607 | while (1) |
1608 | sleep(60); | |
1609 | case -1: | |
1610 | mpsslog("fork failed MIC name %s id %d errno %d\n", | |
1611 | mic->name, mic->id, errno); | |
1612 | break; | |
1613 | default: | |
1614 | if (mic->restart) { | |
1615 | snprintf(buffer, PATH_MAX, "boot"); | |
1616 | setsysfs(mic->name, "state", buffer); | |
1617 | mpsslog("%s restarting mic %d\n", | |
1618 | mic->name, mic->restart); | |
1619 | mic->restart = 0; | |
1620 | } | |
1621 | pthread_create(&mic->config_thread, NULL, mic_config, mic); | |
1622 | } | |
1623 | } | |
1624 | ||
1625 | static void | |
1626 | start_daemon(void) | |
1627 | { | |
1628 | struct mic_info *mic; | |
1629 | ||
1630 | for (mic = mic_list.next; mic != NULL; mic = mic->next) | |
1631 | init_mic(mic); | |
1632 | ||
1633 | while (1) | |
1634 | sleep(60); | |
1635 | } | |
1636 | ||
1637 | static int | |
1638 | init_mic_list(void) | |
1639 | { | |
1640 | struct mic_info *mic = &mic_list; | |
1641 | struct dirent *file; | |
1642 | DIR *dp; | |
1643 | int cnt = 0; | |
1644 | ||
1645 | dp = opendir(MICSYSFSDIR); | |
1646 | if (!dp) | |
1647 | return 0; | |
1648 | ||
1649 | while ((file = readdir(dp)) != NULL) { | |
1650 | if (!strncmp(file->d_name, "mic", 3)) { | |
af190494 | 1651 | mic->next = calloc(1, sizeof(struct mic_info)); |
8d497515 CY |
1652 | if (mic->next) { |
1653 | mic = mic->next; | |
8d497515 CY |
1654 | mic->id = atoi(&file->d_name[3]); |
1655 | mic->name = malloc(strlen(file->d_name) + 16); | |
1656 | if (mic->name) | |
1657 | strcpy(mic->name, file->d_name); | |
1658 | mpsslog("MIC name %s id %d\n", mic->name, | |
1659 | mic->id); | |
1660 | cnt++; | |
1661 | } | |
1662 | } | |
1663 | } | |
1664 | ||
1665 | closedir(dp); | |
1666 | return cnt; | |
1667 | } | |
1668 | ||
1669 | void | |
1670 | mpsslog(char *format, ...) | |
1671 | { | |
1672 | va_list args; | |
1673 | char buffer[4096]; | |
1674 | char ts[52], *ts1; | |
1675 | time_t t; | |
1676 | ||
1677 | if (logfp == NULL) | |
1678 | return; | |
1679 | ||
1680 | va_start(args, format); | |
1681 | vsprintf(buffer, format, args); | |
1682 | va_end(args); | |
1683 | ||
1684 | time(&t); | |
1685 | ts1 = ctime_r(&t, ts); | |
1686 | ts1[strlen(ts1) - 1] = '\0'; | |
1687 | fprintf(logfp, "%s: %s", ts1, buffer); | |
1688 | ||
1689 | fflush(logfp); | |
1690 | } | |
1691 | ||
1692 | int | |
1693 | main(int argc, char *argv[]) | |
1694 | { | |
1695 | int cnt; | |
1696 | pid_t pid; | |
1697 | ||
1698 | myname = argv[0]; | |
1699 | ||
1700 | logfp = fopen(LOGFILE_NAME, "a+"); | |
1701 | if (!logfp) { | |
1702 | fprintf(stderr, "cannot open logfile '%s'\n", LOGFILE_NAME); | |
1703 | exit(1); | |
1704 | } | |
1705 | pid = fork(); | |
1706 | switch (pid) { | |
1707 | case 0: | |
1708 | break; | |
1709 | case -1: | |
1710 | exit(2); | |
1711 | default: | |
1712 | exit(0); | |
1713 | } | |
1714 | ||
1715 | mpsslog("MIC Daemon start\n"); | |
1716 | ||
1717 | cnt = init_mic_list(); | |
1718 | if (cnt == 0) { | |
1719 | mpsslog("MIC module not loaded\n"); | |
1720 | exit(3); | |
1721 | } | |
1722 | mpsslog("MIC found %d devices\n", cnt); | |
1723 | ||
1724 | start_daemon(); | |
1725 | ||
1726 | exit(0); | |
1727 | } |