Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 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> |
Peter Foley | 8c2b0dc | 2014-09-25 11:23:32 -0700 | [diff] [blame] | 44 | #include <tools/endian.h> |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 45 | |
Ashutosh Dixit | f4a66c2 | 2015-09-29 18:14:30 -0700 | [diff] [blame] | 46 | static void *init_mic(void *arg); |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 47 | |
| 48 | static FILE *logfp; |
| 49 | static struct mic_info mic_list; |
| 50 | |
| 51 | #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0])) |
| 52 | |
| 53 | #define min_t(type, x, y) ({ \ |
| 54 | type __min1 = (x); \ |
| 55 | type __min2 = (y); \ |
| 56 | __min1 < __min2 ? __min1 : __min2; }) |
| 57 | |
| 58 | /* align addr on a size boundary - adjust address up/down if needed */ |
| 59 | #define _ALIGN_DOWN(addr, size) ((addr)&(~((size)-1))) |
| 60 | #define _ALIGN_UP(addr, size) _ALIGN_DOWN(addr + size - 1, size) |
| 61 | |
| 62 | /* align addr on a size boundary - adjust address up if needed */ |
| 63 | #define _ALIGN(addr, size) _ALIGN_UP(addr, size) |
| 64 | |
| 65 | /* to align the pointer to the (next) page boundary */ |
| 66 | #define PAGE_ALIGN(addr) _ALIGN(addr, PAGE_SIZE) |
| 67 | |
Mark Rutland | 94bbc9c | 2017-10-23 14:07:20 -0700 | [diff] [blame] | 68 | #define READ_ONCE(x) (*(volatile typeof(x) *)&(x)) |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 69 | |
| 70 | #define GSO_ENABLED 1 |
| 71 | #define MAX_GSO_SIZE (64 * 1024) |
| 72 | #define ETH_H_LEN 14 |
| 73 | #define MAX_NET_PKT_SIZE (_ALIGN_UP(MAX_GSO_SIZE + ETH_H_LEN, 64)) |
| 74 | #define MIC_DEVICE_PAGE_END 0x1000 |
| 75 | |
| 76 | #ifndef VIRTIO_NET_HDR_F_DATA_VALID |
| 77 | #define VIRTIO_NET_HDR_F_DATA_VALID 2 /* Csum is valid */ |
| 78 | #endif |
| 79 | |
| 80 | static struct { |
| 81 | struct mic_device_desc dd; |
| 82 | struct mic_vqconfig vqconfig[2]; |
| 83 | __u32 host_features, guest_acknowledgements; |
| 84 | struct virtio_console_config cons_config; |
| 85 | } virtcons_dev_page = { |
| 86 | .dd = { |
| 87 | .type = VIRTIO_ID_CONSOLE, |
| 88 | .num_vq = ARRAY_SIZE(virtcons_dev_page.vqconfig), |
| 89 | .feature_len = sizeof(virtcons_dev_page.host_features), |
| 90 | .config_len = sizeof(virtcons_dev_page.cons_config), |
| 91 | }, |
| 92 | .vqconfig[0] = { |
| 93 | .num = htole16(MIC_VRING_ENTRIES), |
| 94 | }, |
| 95 | .vqconfig[1] = { |
| 96 | .num = htole16(MIC_VRING_ENTRIES), |
| 97 | }, |
| 98 | }; |
| 99 | |
| 100 | static struct { |
| 101 | struct mic_device_desc dd; |
| 102 | struct mic_vqconfig vqconfig[2]; |
| 103 | __u32 host_features, guest_acknowledgements; |
| 104 | struct virtio_net_config net_config; |
| 105 | } virtnet_dev_page = { |
| 106 | .dd = { |
| 107 | .type = VIRTIO_ID_NET, |
| 108 | .num_vq = ARRAY_SIZE(virtnet_dev_page.vqconfig), |
| 109 | .feature_len = sizeof(virtnet_dev_page.host_features), |
| 110 | .config_len = sizeof(virtnet_dev_page.net_config), |
| 111 | }, |
| 112 | .vqconfig[0] = { |
| 113 | .num = htole16(MIC_VRING_ENTRIES), |
| 114 | }, |
| 115 | .vqconfig[1] = { |
| 116 | .num = htole16(MIC_VRING_ENTRIES), |
| 117 | }, |
| 118 | #if GSO_ENABLED |
Ashutosh Dixit | f4a66c2 | 2015-09-29 18:14:30 -0700 | [diff] [blame] | 119 | .host_features = htole32( |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 120 | 1 << VIRTIO_NET_F_CSUM | |
| 121 | 1 << VIRTIO_NET_F_GSO | |
| 122 | 1 << VIRTIO_NET_F_GUEST_TSO4 | |
| 123 | 1 << VIRTIO_NET_F_GUEST_TSO6 | |
Ashutosh Dixit | f4a66c2 | 2015-09-29 18:14:30 -0700 | [diff] [blame] | 124 | 1 << VIRTIO_NET_F_GUEST_ECN), |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 125 | #else |
| 126 | .host_features = 0, |
| 127 | #endif |
| 128 | }; |
| 129 | |
Ashutosh Dixit | f4a66c2 | 2015-09-29 18:14:30 -0700 | [diff] [blame] | 130 | static const char *mic_config_dir = "/etc/mpss"; |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 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 | |
Ashutosh Dixit | f4a66c2 | 2015-09-29 18:14:30 -0700 | [diff] [blame] | 194 | snprintf(ipaddr, IFNAMSIZ, "172.31.%d.254/24", mic->id + 1); |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 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 | |
Ashutosh Dixit | ced2c60 | 2013-09-27 09:49:53 -0700 | [diff] [blame] | 249 | err = ioctl(fd, TUNSETIFF, (void *)&ifr); |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 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 |
Ashutosh Dixit | f4a66c2 | 2015-09-29 18:14:30 -0700 | [diff] [blame] | 257 | offload = TUN_F_CSUM | TUN_F_TSO4 | TUN_F_TSO6 | TUN_F_TSO_ECN; |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 258 | |
| 259 | err = ioctl(fd, TUNSETOFFLOAD, offload); |
| 260 | if (err < 0) { |
| 261 | mpsslog("%s %s %d TUNSETOFFLOAD failed %s\n", |
| 262 | mic->name, __func__, __LINE__, strerror(errno)); |
| 263 | close(fd); |
| 264 | return err; |
| 265 | } |
| 266 | #endif |
| 267 | strcpy(dev, ifr.ifr_name); |
| 268 | mpsslog("Created TAP %s\n", dev); |
| 269 | done: |
| 270 | return fd; |
| 271 | } |
| 272 | |
| 273 | #define NET_FD_VIRTIO_NET 0 |
| 274 | #define NET_FD_TUN 1 |
| 275 | #define MAX_NET_FD 2 |
| 276 | |
| 277 | static void set_dp(struct mic_info *mic, int type, void *dp) |
| 278 | { |
| 279 | switch (type) { |
| 280 | case VIRTIO_ID_CONSOLE: |
| 281 | mic->mic_console.console_dp = dp; |
| 282 | return; |
| 283 | case VIRTIO_ID_NET: |
| 284 | mic->mic_net.net_dp = dp; |
| 285 | return; |
| 286 | case VIRTIO_ID_BLOCK: |
| 287 | mic->mic_virtblk.block_dp = dp; |
| 288 | return; |
| 289 | } |
| 290 | mpsslog("%s %s %d not found\n", mic->name, __func__, type); |
| 291 | assert(0); |
| 292 | } |
| 293 | |
| 294 | static void *get_dp(struct mic_info *mic, int type) |
| 295 | { |
| 296 | switch (type) { |
| 297 | case VIRTIO_ID_CONSOLE: |
| 298 | return mic->mic_console.console_dp; |
| 299 | case VIRTIO_ID_NET: |
| 300 | return mic->mic_net.net_dp; |
| 301 | case VIRTIO_ID_BLOCK: |
| 302 | return mic->mic_virtblk.block_dp; |
| 303 | } |
| 304 | mpsslog("%s %s %d not found\n", mic->name, __func__, type); |
| 305 | assert(0); |
| 306 | return NULL; |
| 307 | } |
| 308 | |
| 309 | static struct mic_device_desc *get_device_desc(struct mic_info *mic, int type) |
| 310 | { |
| 311 | struct mic_device_desc *d; |
| 312 | int i; |
| 313 | void *dp = get_dp(mic, type); |
| 314 | |
Ashutosh Dixit | 1e31aa9 | 2013-11-27 08:58:41 -0800 | [diff] [blame] | 315 | for (i = sizeof(struct mic_bootparam); i < PAGE_SIZE; |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 316 | i += mic_total_desc_size(d)) { |
| 317 | d = dp + i; |
| 318 | |
| 319 | /* End of list */ |
| 320 | if (d->type == 0) |
| 321 | break; |
| 322 | |
| 323 | if (d->type == -1) |
| 324 | continue; |
| 325 | |
| 326 | mpsslog("%s %s d-> type %d d %p\n", |
| 327 | mic->name, __func__, d->type, d); |
| 328 | |
| 329 | if (d->type == (__u8)type) |
| 330 | return d; |
| 331 | } |
| 332 | mpsslog("%s %s %d not found\n", mic->name, __func__, type); |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 333 | return NULL; |
| 334 | } |
| 335 | |
| 336 | /* See comments in vhost.c for explanation of next_desc() */ |
| 337 | static unsigned next_desc(struct vring_desc *desc) |
| 338 | { |
| 339 | unsigned int next; |
| 340 | |
| 341 | if (!(le16toh(desc->flags) & VRING_DESC_F_NEXT)) |
| 342 | return -1U; |
| 343 | next = le16toh(desc->next); |
| 344 | return next; |
| 345 | } |
| 346 | |
| 347 | /* Sum up all the IOVEC length */ |
| 348 | static ssize_t |
| 349 | sum_iovec_len(struct mic_copy_desc *copy) |
| 350 | { |
| 351 | ssize_t sum = 0; |
Mahesh Khanwalkar | f0cd147 | 2016-02-13 19:05:31 -0500 | [diff] [blame] | 352 | unsigned int i; |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 353 | |
| 354 | for (i = 0; i < copy->iovcnt; i++) |
| 355 | sum += copy->iov[i].iov_len; |
| 356 | return sum; |
| 357 | } |
| 358 | |
| 359 | static inline void verify_out_len(struct mic_info *mic, |
| 360 | struct mic_copy_desc *copy) |
| 361 | { |
| 362 | if (copy->out_len != sum_iovec_len(copy)) { |
Sudeep Dutt | 6078e0b | 2013-10-02 16:09:00 -0700 | [diff] [blame] | 363 | mpsslog("%s %s %d BUG copy->out_len 0x%x len 0x%zx\n", |
Ashutosh Dixit | ced2c60 | 2013-09-27 09:49:53 -0700 | [diff] [blame] | 364 | mic->name, __func__, __LINE__, |
Sudeep Dutt | 6078e0b | 2013-10-02 16:09:00 -0700 | [diff] [blame] | 365 | copy->out_len, sum_iovec_len(copy)); |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 366 | assert(copy->out_len == sum_iovec_len(copy)); |
| 367 | } |
| 368 | } |
| 369 | |
| 370 | /* Display an iovec */ |
| 371 | static void |
| 372 | disp_iovec(struct mic_info *mic, struct mic_copy_desc *copy, |
Ashutosh Dixit | ced2c60 | 2013-09-27 09:49:53 -0700 | [diff] [blame] | 373 | const char *s, int line) |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 374 | { |
Mahesh Khanwalkar | f0cd147 | 2016-02-13 19:05:31 -0500 | [diff] [blame] | 375 | unsigned int i; |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 376 | |
| 377 | for (i = 0; i < copy->iovcnt; i++) |
Sudeep Dutt | 6078e0b | 2013-10-02 16:09:00 -0700 | [diff] [blame] | 378 | mpsslog("%s %s %d copy->iov[%d] addr %p len 0x%zx\n", |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 379 | mic->name, s, line, i, |
| 380 | copy->iov[i].iov_base, copy->iov[i].iov_len); |
| 381 | } |
| 382 | |
| 383 | static inline __u16 read_avail_idx(struct mic_vring *vr) |
| 384 | { |
Mark Rutland | 94bbc9c | 2017-10-23 14:07:20 -0700 | [diff] [blame] | 385 | return READ_ONCE(vr->info->avail_idx); |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 386 | } |
| 387 | |
| 388 | static inline void txrx_prepare(int type, bool tx, struct mic_vring *vr, |
| 389 | struct mic_copy_desc *copy, ssize_t len) |
| 390 | { |
| 391 | copy->vr_idx = tx ? 0 : 1; |
| 392 | copy->update_used = true; |
| 393 | if (type == VIRTIO_ID_NET) |
| 394 | copy->iov[1].iov_len = len - sizeof(struct virtio_net_hdr); |
| 395 | else |
| 396 | copy->iov[0].iov_len = len; |
| 397 | } |
| 398 | |
| 399 | /* Central API which triggers the copies */ |
| 400 | static int |
| 401 | mic_virtio_copy(struct mic_info *mic, int fd, |
Ashutosh Dixit | ced2c60 | 2013-09-27 09:49:53 -0700 | [diff] [blame] | 402 | struct mic_vring *vr, struct mic_copy_desc *copy) |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 403 | { |
| 404 | int ret; |
| 405 | |
| 406 | ret = ioctl(fd, MIC_VIRTIO_COPY_DESC, copy); |
| 407 | if (ret) { |
| 408 | mpsslog("%s %s %d errno %s ret %d\n", |
| 409 | mic->name, __func__, __LINE__, |
| 410 | strerror(errno), ret); |
| 411 | } |
| 412 | return ret; |
| 413 | } |
| 414 | |
Ashutosh Dixit | f4a66c2 | 2015-09-29 18:14:30 -0700 | [diff] [blame] | 415 | static inline unsigned _vring_size(unsigned int num, unsigned long align) |
| 416 | { |
| 417 | return ((sizeof(struct vring_desc) * num + sizeof(__u16) * (3 + num) |
| 418 | + align - 1) & ~(align - 1)) |
| 419 | + sizeof(__u16) * 3 + sizeof(struct vring_used_elem) * num; |
| 420 | } |
| 421 | |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 422 | /* |
| 423 | * This initialization routine requires at least one |
| 424 | * vring i.e. vr0. vr1 is optional. |
| 425 | */ |
| 426 | static void * |
| 427 | init_vr(struct mic_info *mic, int fd, int type, |
| 428 | struct mic_vring *vr0, struct mic_vring *vr1, int num_vq) |
| 429 | { |
| 430 | int vr_size; |
| 431 | char *va; |
| 432 | |
Ashutosh Dixit | f4a66c2 | 2015-09-29 18:14:30 -0700 | [diff] [blame] | 433 | vr_size = PAGE_ALIGN(_vring_size(MIC_VRING_ENTRIES, |
| 434 | MIC_VIRTIO_RING_ALIGN) + |
| 435 | sizeof(struct _mic_vring_info)); |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 436 | va = mmap(NULL, MIC_DEVICE_PAGE_END + vr_size * num_vq, |
| 437 | PROT_READ, MAP_SHARED, fd, 0); |
| 438 | if (MAP_FAILED == va) { |
| 439 | mpsslog("%s %s %d mmap failed errno %s\n", |
| 440 | mic->name, __func__, __LINE__, |
| 441 | strerror(errno)); |
| 442 | goto done; |
| 443 | } |
| 444 | set_dp(mic, type, va); |
| 445 | vr0->va = (struct mic_vring *)&va[MIC_DEVICE_PAGE_END]; |
| 446 | vr0->info = vr0->va + |
Ashutosh Dixit | f4a66c2 | 2015-09-29 18:14:30 -0700 | [diff] [blame] | 447 | _vring_size(MIC_VRING_ENTRIES, MIC_VIRTIO_RING_ALIGN); |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 448 | vring_init(&vr0->vr, |
Ashutosh Dixit | ced2c60 | 2013-09-27 09:49:53 -0700 | [diff] [blame] | 449 | MIC_VRING_ENTRIES, vr0->va, MIC_VIRTIO_RING_ALIGN); |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 450 | mpsslog("%s %s vr0 %p vr0->info %p vr_size 0x%x vring 0x%x ", |
| 451 | __func__, mic->name, vr0->va, vr0->info, vr_size, |
Ashutosh Dixit | f4a66c2 | 2015-09-29 18:14:30 -0700 | [diff] [blame] | 452 | _vring_size(MIC_VRING_ENTRIES, MIC_VIRTIO_RING_ALIGN)); |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 453 | mpsslog("magic 0x%x expected 0x%x\n", |
Ashutosh Dixit | 173c072 | 2013-11-27 08:58:42 -0800 | [diff] [blame] | 454 | le32toh(vr0->info->magic), MIC_MAGIC + type); |
| 455 | assert(le32toh(vr0->info->magic) == MIC_MAGIC + type); |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 456 | if (vr1) { |
| 457 | vr1->va = (struct mic_vring *) |
| 458 | &va[MIC_DEVICE_PAGE_END + vr_size]; |
Ashutosh Dixit | f4a66c2 | 2015-09-29 18:14:30 -0700 | [diff] [blame] | 459 | vr1->info = vr1->va + _vring_size(MIC_VRING_ENTRIES, |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 460 | MIC_VIRTIO_RING_ALIGN); |
| 461 | vring_init(&vr1->vr, |
Ashutosh Dixit | ced2c60 | 2013-09-27 09:49:53 -0700 | [diff] [blame] | 462 | MIC_VRING_ENTRIES, vr1->va, MIC_VIRTIO_RING_ALIGN); |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 463 | mpsslog("%s %s vr1 %p vr1->info %p vr_size 0x%x vring 0x%x ", |
| 464 | __func__, mic->name, vr1->va, vr1->info, vr_size, |
Ashutosh Dixit | f4a66c2 | 2015-09-29 18:14:30 -0700 | [diff] [blame] | 465 | _vring_size(MIC_VRING_ENTRIES, MIC_VIRTIO_RING_ALIGN)); |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 466 | mpsslog("magic 0x%x expected 0x%x\n", |
Ashutosh Dixit | 173c072 | 2013-11-27 08:58:42 -0800 | [diff] [blame] | 467 | le32toh(vr1->info->magic), MIC_MAGIC + type + 1); |
| 468 | assert(le32toh(vr1->info->magic) == MIC_MAGIC + type + 1); |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 469 | } |
| 470 | done: |
| 471 | return va; |
| 472 | } |
| 473 | |
Ashutosh Dixit | f4a66c2 | 2015-09-29 18:14:30 -0700 | [diff] [blame] | 474 | static int |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 475 | wait_for_card_driver(struct mic_info *mic, int fd, int type) |
| 476 | { |
| 477 | struct pollfd pollfd; |
| 478 | int err; |
| 479 | struct mic_device_desc *desc = get_device_desc(mic, type); |
Ashutosh Dixit | f4a66c2 | 2015-09-29 18:14:30 -0700 | [diff] [blame] | 480 | __u8 prev_status; |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 481 | |
Ashutosh Dixit | f4a66c2 | 2015-09-29 18:14:30 -0700 | [diff] [blame] | 482 | if (!desc) |
| 483 | return -ENODEV; |
| 484 | prev_status = desc->status; |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 485 | pollfd.fd = fd; |
| 486 | mpsslog("%s %s Waiting .... desc-> type %d status 0x%x\n", |
| 487 | mic->name, __func__, type, desc->status); |
Ashutosh Dixit | f4a66c2 | 2015-09-29 18:14:30 -0700 | [diff] [blame] | 488 | |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 489 | while (1) { |
| 490 | pollfd.events = POLLIN; |
| 491 | pollfd.revents = 0; |
| 492 | err = poll(&pollfd, 1, -1); |
| 493 | if (err < 0) { |
| 494 | mpsslog("%s %s poll failed %s\n", |
| 495 | mic->name, __func__, strerror(errno)); |
| 496 | continue; |
| 497 | } |
| 498 | |
| 499 | if (pollfd.revents) { |
Ashutosh Dixit | f4a66c2 | 2015-09-29 18:14:30 -0700 | [diff] [blame] | 500 | if (desc->status != prev_status) { |
| 501 | mpsslog("%s %s Waiting... desc-> type %d " |
| 502 | "status 0x%x\n", |
| 503 | mic->name, __func__, type, |
| 504 | desc->status); |
| 505 | prev_status = desc->status; |
| 506 | } |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 507 | if (desc->status & VIRTIO_CONFIG_S_DRIVER_OK) { |
| 508 | mpsslog("%s %s poll.revents %d\n", |
| 509 | mic->name, __func__, pollfd.revents); |
| 510 | mpsslog("%s %s desc-> type %d status 0x%x\n", |
| 511 | mic->name, __func__, type, |
| 512 | desc->status); |
| 513 | break; |
| 514 | } |
| 515 | } |
| 516 | } |
Ashutosh Dixit | f4a66c2 | 2015-09-29 18:14:30 -0700 | [diff] [blame] | 517 | return 0; |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 518 | } |
| 519 | |
| 520 | /* Spin till we have some descriptors */ |
| 521 | static void |
| 522 | spin_for_descriptors(struct mic_info *mic, struct mic_vring *vr) |
| 523 | { |
| 524 | __u16 avail_idx = read_avail_idx(vr); |
| 525 | |
Mark Rutland | 94bbc9c | 2017-10-23 14:07:20 -0700 | [diff] [blame] | 526 | while (avail_idx == le16toh(READ_ONCE(vr->vr.avail->idx))) { |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 527 | #ifdef DEBUG |
| 528 | mpsslog("%s %s waiting for desc avail %d info_avail %d\n", |
| 529 | mic->name, __func__, |
| 530 | le16toh(vr->vr.avail->idx), vr->info->avail_idx); |
| 531 | #endif |
| 532 | sched_yield(); |
| 533 | } |
| 534 | } |
| 535 | |
| 536 | static void * |
| 537 | virtio_net(void *arg) |
| 538 | { |
| 539 | static __u8 vnet_hdr[2][sizeof(struct virtio_net_hdr)]; |
Ashutosh Dixit | 1e31aa9 | 2013-11-27 08:58:41 -0800 | [diff] [blame] | 540 | static __u8 vnet_buf[2][MAX_NET_PKT_SIZE] __attribute__ ((aligned(64))); |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 541 | struct iovec vnet_iov[2][2] = { |
| 542 | { { .iov_base = vnet_hdr[0], .iov_len = sizeof(vnet_hdr[0]) }, |
| 543 | { .iov_base = vnet_buf[0], .iov_len = sizeof(vnet_buf[0]) } }, |
| 544 | { { .iov_base = vnet_hdr[1], .iov_len = sizeof(vnet_hdr[1]) }, |
| 545 | { .iov_base = vnet_buf[1], .iov_len = sizeof(vnet_buf[1]) } }, |
| 546 | }; |
| 547 | struct iovec *iov0 = vnet_iov[0], *iov1 = vnet_iov[1]; |
| 548 | struct mic_info *mic = (struct mic_info *)arg; |
| 549 | char if_name[IFNAMSIZ]; |
| 550 | struct pollfd net_poll[MAX_NET_FD]; |
| 551 | struct mic_vring tx_vr, rx_vr; |
| 552 | struct mic_copy_desc copy; |
| 553 | struct mic_device_desc *desc; |
| 554 | int err; |
| 555 | |
| 556 | snprintf(if_name, IFNAMSIZ, "mic%d", mic->id); |
| 557 | mic->mic_net.tap_fd = tun_alloc(mic, if_name); |
| 558 | if (mic->mic_net.tap_fd < 0) |
| 559 | goto done; |
| 560 | |
| 561 | if (tap_configure(mic, if_name)) |
| 562 | goto done; |
| 563 | mpsslog("MIC name %s id %d\n", mic->name, mic->id); |
| 564 | |
| 565 | net_poll[NET_FD_VIRTIO_NET].fd = mic->mic_net.virtio_net_fd; |
| 566 | net_poll[NET_FD_VIRTIO_NET].events = POLLIN; |
| 567 | net_poll[NET_FD_TUN].fd = mic->mic_net.tap_fd; |
| 568 | net_poll[NET_FD_TUN].events = POLLIN; |
| 569 | |
| 570 | if (MAP_FAILED == init_vr(mic, mic->mic_net.virtio_net_fd, |
Ashutosh Dixit | ced2c60 | 2013-09-27 09:49:53 -0700 | [diff] [blame] | 571 | VIRTIO_ID_NET, &tx_vr, &rx_vr, |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 572 | virtnet_dev_page.dd.num_vq)) { |
| 573 | mpsslog("%s init_vr failed %s\n", |
| 574 | mic->name, strerror(errno)); |
| 575 | goto done; |
| 576 | } |
| 577 | |
| 578 | copy.iovcnt = 2; |
| 579 | desc = get_device_desc(mic, VIRTIO_ID_NET); |
| 580 | |
| 581 | while (1) { |
| 582 | ssize_t len; |
| 583 | |
| 584 | net_poll[NET_FD_VIRTIO_NET].revents = 0; |
| 585 | net_poll[NET_FD_TUN].revents = 0; |
| 586 | |
| 587 | /* Start polling for data from tap and virtio net */ |
| 588 | err = poll(net_poll, 2, -1); |
| 589 | if (err < 0) { |
| 590 | mpsslog("%s poll failed %s\n", |
| 591 | __func__, strerror(errno)); |
| 592 | continue; |
| 593 | } |
Ashutosh Dixit | f4a66c2 | 2015-09-29 18:14:30 -0700 | [diff] [blame] | 594 | if (!(desc->status & VIRTIO_CONFIG_S_DRIVER_OK)) { |
| 595 | err = wait_for_card_driver(mic, |
| 596 | mic->mic_net.virtio_net_fd, |
| 597 | VIRTIO_ID_NET); |
| 598 | if (err) { |
| 599 | mpsslog("%s %s %d Exiting...\n", |
| 600 | mic->name, __func__, __LINE__); |
| 601 | break; |
| 602 | } |
| 603 | } |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 604 | /* |
| 605 | * Check if there is data to be read from TUN and write to |
| 606 | * virtio net fd if there is. |
| 607 | */ |
| 608 | if (net_poll[NET_FD_TUN].revents & POLLIN) { |
| 609 | copy.iov = iov0; |
| 610 | len = readv(net_poll[NET_FD_TUN].fd, |
| 611 | copy.iov, copy.iovcnt); |
| 612 | if (len > 0) { |
| 613 | struct virtio_net_hdr *hdr |
Ashutosh Dixit | ced2c60 | 2013-09-27 09:49:53 -0700 | [diff] [blame] | 614 | = (struct virtio_net_hdr *)vnet_hdr[0]; |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 615 | |
| 616 | /* Disable checksums on the card since we are on |
| 617 | a reliable PCIe link */ |
| 618 | hdr->flags |= VIRTIO_NET_HDR_F_DATA_VALID; |
| 619 | #ifdef DEBUG |
| 620 | mpsslog("%s %s %d hdr->flags 0x%x ", mic->name, |
| 621 | __func__, __LINE__, hdr->flags); |
| 622 | mpsslog("copy.out_len %d hdr->gso_type 0x%x\n", |
| 623 | copy.out_len, hdr->gso_type); |
| 624 | #endif |
| 625 | #ifdef DEBUG |
| 626 | disp_iovec(mic, copy, __func__, __LINE__); |
| 627 | mpsslog("%s %s %d read from tap 0x%lx\n", |
| 628 | mic->name, __func__, __LINE__, |
| 629 | len); |
| 630 | #endif |
| 631 | spin_for_descriptors(mic, &tx_vr); |
| 632 | txrx_prepare(VIRTIO_ID_NET, 1, &tx_vr, ©, |
Ashutosh Dixit | ced2c60 | 2013-09-27 09:49:53 -0700 | [diff] [blame] | 633 | len); |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 634 | |
| 635 | err = mic_virtio_copy(mic, |
| 636 | mic->mic_net.virtio_net_fd, &tx_vr, |
| 637 | ©); |
| 638 | if (err < 0) { |
| 639 | mpsslog("%s %s %d mic_virtio_copy %s\n", |
| 640 | mic->name, __func__, __LINE__, |
| 641 | strerror(errno)); |
| 642 | } |
| 643 | if (!err) |
| 644 | verify_out_len(mic, ©); |
| 645 | #ifdef DEBUG |
| 646 | disp_iovec(mic, copy, __func__, __LINE__); |
| 647 | mpsslog("%s %s %d wrote to net 0x%lx\n", |
| 648 | mic->name, __func__, __LINE__, |
| 649 | sum_iovec_len(©)); |
| 650 | #endif |
| 651 | /* Reinitialize IOV for next run */ |
| 652 | iov0[1].iov_len = MAX_NET_PKT_SIZE; |
| 653 | } else if (len < 0) { |
| 654 | disp_iovec(mic, ©, __func__, __LINE__); |
| 655 | mpsslog("%s %s %d read failed %s ", mic->name, |
| 656 | __func__, __LINE__, strerror(errno)); |
Sudeep Dutt | 6078e0b | 2013-10-02 16:09:00 -0700 | [diff] [blame] | 657 | mpsslog("cnt %d sum %zd\n", |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 658 | copy.iovcnt, sum_iovec_len(©)); |
| 659 | } |
| 660 | } |
| 661 | |
| 662 | /* |
| 663 | * Check if there is data to be read from virtio net and |
| 664 | * write to TUN if there is. |
| 665 | */ |
| 666 | if (net_poll[NET_FD_VIRTIO_NET].revents & POLLIN) { |
| 667 | while (rx_vr.info->avail_idx != |
| 668 | le16toh(rx_vr.vr.avail->idx)) { |
| 669 | copy.iov = iov1; |
| 670 | txrx_prepare(VIRTIO_ID_NET, 0, &rx_vr, ©, |
Ashutosh Dixit | ced2c60 | 2013-09-27 09:49:53 -0700 | [diff] [blame] | 671 | MAX_NET_PKT_SIZE |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 672 | + sizeof(struct virtio_net_hdr)); |
| 673 | |
| 674 | err = mic_virtio_copy(mic, |
| 675 | mic->mic_net.virtio_net_fd, &rx_vr, |
| 676 | ©); |
| 677 | if (!err) { |
| 678 | #ifdef DEBUG |
| 679 | struct virtio_net_hdr *hdr |
| 680 | = (struct virtio_net_hdr *) |
| 681 | vnet_hdr[1]; |
| 682 | |
| 683 | mpsslog("%s %s %d hdr->flags 0x%x, ", |
| 684 | mic->name, __func__, __LINE__, |
| 685 | hdr->flags); |
| 686 | mpsslog("out_len %d gso_type 0x%x\n", |
| 687 | copy.out_len, |
| 688 | hdr->gso_type); |
| 689 | #endif |
| 690 | /* Set the correct output iov_len */ |
| 691 | iov1[1].iov_len = copy.out_len - |
| 692 | sizeof(struct virtio_net_hdr); |
| 693 | verify_out_len(mic, ©); |
| 694 | #ifdef DEBUG |
| 695 | disp_iovec(mic, copy, __func__, |
Ashutosh Dixit | ced2c60 | 2013-09-27 09:49:53 -0700 | [diff] [blame] | 696 | __LINE__); |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 697 | mpsslog("%s %s %d ", |
| 698 | mic->name, __func__, __LINE__); |
| 699 | mpsslog("read from net 0x%lx\n", |
| 700 | sum_iovec_len(copy)); |
| 701 | #endif |
| 702 | len = writev(net_poll[NET_FD_TUN].fd, |
| 703 | copy.iov, copy.iovcnt); |
| 704 | if (len != sum_iovec_len(©)) { |
| 705 | mpsslog("Tun write failed %s ", |
| 706 | strerror(errno)); |
Sudeep Dutt | 6078e0b | 2013-10-02 16:09:00 -0700 | [diff] [blame] | 707 | mpsslog("len 0x%zx ", len); |
| 708 | mpsslog("read_len 0x%zx\n", |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 709 | sum_iovec_len(©)); |
| 710 | } else { |
| 711 | #ifdef DEBUG |
| 712 | disp_iovec(mic, ©, __func__, |
Ashutosh Dixit | ced2c60 | 2013-09-27 09:49:53 -0700 | [diff] [blame] | 713 | __LINE__); |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 714 | mpsslog("%s %s %d ", |
| 715 | mic->name, __func__, |
| 716 | __LINE__); |
| 717 | mpsslog("wrote to tap 0x%lx\n", |
| 718 | len); |
| 719 | #endif |
| 720 | } |
| 721 | } else { |
| 722 | mpsslog("%s %s %d mic_virtio_copy %s\n", |
| 723 | mic->name, __func__, __LINE__, |
| 724 | strerror(errno)); |
| 725 | break; |
| 726 | } |
| 727 | } |
| 728 | } |
| 729 | if (net_poll[NET_FD_VIRTIO_NET].revents & POLLERR) |
| 730 | mpsslog("%s: %s: POLLERR\n", __func__, mic->name); |
| 731 | } |
| 732 | done: |
| 733 | pthread_exit(NULL); |
| 734 | } |
| 735 | |
| 736 | /* virtio_console */ |
| 737 | #define VIRTIO_CONSOLE_FD 0 |
| 738 | #define MONITOR_FD (VIRTIO_CONSOLE_FD + 1) |
| 739 | #define MAX_CONSOLE_FD (MONITOR_FD + 1) /* must be the last one + 1 */ |
| 740 | #define MAX_BUFFER_SIZE PAGE_SIZE |
| 741 | |
| 742 | static void * |
| 743 | virtio_console(void *arg) |
| 744 | { |
| 745 | static __u8 vcons_buf[2][PAGE_SIZE]; |
| 746 | struct iovec vcons_iov[2] = { |
| 747 | { .iov_base = vcons_buf[0], .iov_len = sizeof(vcons_buf[0]) }, |
| 748 | { .iov_base = vcons_buf[1], .iov_len = sizeof(vcons_buf[1]) }, |
| 749 | }; |
| 750 | struct iovec *iov0 = &vcons_iov[0], *iov1 = &vcons_iov[1]; |
| 751 | struct mic_info *mic = (struct mic_info *)arg; |
| 752 | int err; |
| 753 | struct pollfd console_poll[MAX_CONSOLE_FD]; |
| 754 | int pty_fd; |
| 755 | char *pts_name; |
| 756 | ssize_t len; |
| 757 | struct mic_vring tx_vr, rx_vr; |
| 758 | struct mic_copy_desc copy; |
| 759 | struct mic_device_desc *desc; |
| 760 | |
| 761 | pty_fd = posix_openpt(O_RDWR); |
| 762 | if (pty_fd < 0) { |
| 763 | mpsslog("can't open a pseudoterminal master device: %s\n", |
| 764 | strerror(errno)); |
| 765 | goto _return; |
| 766 | } |
| 767 | pts_name = ptsname(pty_fd); |
| 768 | if (pts_name == NULL) { |
| 769 | mpsslog("can't get pts name\n"); |
| 770 | goto _close_pty; |
| 771 | } |
| 772 | printf("%s console message goes to %s\n", mic->name, pts_name); |
| 773 | mpsslog("%s console message goes to %s\n", mic->name, pts_name); |
| 774 | err = grantpt(pty_fd); |
| 775 | if (err < 0) { |
| 776 | mpsslog("can't grant access: %s %s\n", |
Ashutosh Dixit | ced2c60 | 2013-09-27 09:49:53 -0700 | [diff] [blame] | 777 | pts_name, strerror(errno)); |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 778 | goto _close_pty; |
| 779 | } |
| 780 | err = unlockpt(pty_fd); |
| 781 | if (err < 0) { |
| 782 | mpsslog("can't unlock a pseudoterminal: %s %s\n", |
Ashutosh Dixit | ced2c60 | 2013-09-27 09:49:53 -0700 | [diff] [blame] | 783 | pts_name, strerror(errno)); |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 784 | goto _close_pty; |
| 785 | } |
| 786 | console_poll[MONITOR_FD].fd = pty_fd; |
| 787 | console_poll[MONITOR_FD].events = POLLIN; |
| 788 | |
| 789 | console_poll[VIRTIO_CONSOLE_FD].fd = mic->mic_console.virtio_console_fd; |
| 790 | console_poll[VIRTIO_CONSOLE_FD].events = POLLIN; |
| 791 | |
| 792 | if (MAP_FAILED == init_vr(mic, mic->mic_console.virtio_console_fd, |
Ashutosh Dixit | ced2c60 | 2013-09-27 09:49:53 -0700 | [diff] [blame] | 793 | VIRTIO_ID_CONSOLE, &tx_vr, &rx_vr, |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 794 | virtcons_dev_page.dd.num_vq)) { |
| 795 | mpsslog("%s init_vr failed %s\n", |
| 796 | mic->name, strerror(errno)); |
| 797 | goto _close_pty; |
| 798 | } |
| 799 | |
| 800 | copy.iovcnt = 1; |
| 801 | desc = get_device_desc(mic, VIRTIO_ID_CONSOLE); |
| 802 | |
| 803 | for (;;) { |
| 804 | console_poll[MONITOR_FD].revents = 0; |
| 805 | console_poll[VIRTIO_CONSOLE_FD].revents = 0; |
| 806 | err = poll(console_poll, MAX_CONSOLE_FD, -1); |
| 807 | if (err < 0) { |
| 808 | mpsslog("%s %d: poll failed: %s\n", __func__, __LINE__, |
| 809 | strerror(errno)); |
| 810 | continue; |
| 811 | } |
Ashutosh Dixit | f4a66c2 | 2015-09-29 18:14:30 -0700 | [diff] [blame] | 812 | if (!(desc->status & VIRTIO_CONFIG_S_DRIVER_OK)) { |
| 813 | err = wait_for_card_driver(mic, |
| 814 | mic->mic_console.virtio_console_fd, |
| 815 | VIRTIO_ID_CONSOLE); |
| 816 | if (err) { |
| 817 | mpsslog("%s %s %d Exiting...\n", |
| 818 | mic->name, __func__, __LINE__); |
| 819 | break; |
| 820 | } |
| 821 | } |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 822 | |
| 823 | if (console_poll[MONITOR_FD].revents & POLLIN) { |
| 824 | copy.iov = iov0; |
| 825 | len = readv(pty_fd, copy.iov, copy.iovcnt); |
| 826 | if (len > 0) { |
| 827 | #ifdef DEBUG |
| 828 | disp_iovec(mic, copy, __func__, __LINE__); |
| 829 | mpsslog("%s %s %d read from tap 0x%lx\n", |
| 830 | mic->name, __func__, __LINE__, |
| 831 | len); |
| 832 | #endif |
| 833 | spin_for_descriptors(mic, &tx_vr); |
| 834 | txrx_prepare(VIRTIO_ID_CONSOLE, 1, &tx_vr, |
Ashutosh Dixit | ced2c60 | 2013-09-27 09:49:53 -0700 | [diff] [blame] | 835 | ©, len); |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 836 | |
| 837 | err = mic_virtio_copy(mic, |
| 838 | mic->mic_console.virtio_console_fd, |
| 839 | &tx_vr, ©); |
| 840 | if (err < 0) { |
| 841 | mpsslog("%s %s %d mic_virtio_copy %s\n", |
| 842 | mic->name, __func__, __LINE__, |
| 843 | strerror(errno)); |
| 844 | } |
| 845 | if (!err) |
| 846 | verify_out_len(mic, ©); |
| 847 | #ifdef DEBUG |
| 848 | disp_iovec(mic, copy, __func__, __LINE__); |
| 849 | mpsslog("%s %s %d wrote to net 0x%lx\n", |
| 850 | mic->name, __func__, __LINE__, |
| 851 | sum_iovec_len(copy)); |
| 852 | #endif |
| 853 | /* Reinitialize IOV for next run */ |
| 854 | iov0->iov_len = PAGE_SIZE; |
| 855 | } else if (len < 0) { |
| 856 | disp_iovec(mic, ©, __func__, __LINE__); |
| 857 | mpsslog("%s %s %d read failed %s ", |
| 858 | mic->name, __func__, __LINE__, |
| 859 | strerror(errno)); |
Sudeep Dutt | 6078e0b | 2013-10-02 16:09:00 -0700 | [diff] [blame] | 860 | mpsslog("cnt %d sum %zd\n", |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 861 | copy.iovcnt, sum_iovec_len(©)); |
| 862 | } |
| 863 | } |
| 864 | |
| 865 | if (console_poll[VIRTIO_CONSOLE_FD].revents & POLLIN) { |
| 866 | while (rx_vr.info->avail_idx != |
| 867 | le16toh(rx_vr.vr.avail->idx)) { |
| 868 | copy.iov = iov1; |
| 869 | txrx_prepare(VIRTIO_ID_CONSOLE, 0, &rx_vr, |
Ashutosh Dixit | ced2c60 | 2013-09-27 09:49:53 -0700 | [diff] [blame] | 870 | ©, PAGE_SIZE); |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 871 | |
| 872 | err = mic_virtio_copy(mic, |
| 873 | mic->mic_console.virtio_console_fd, |
| 874 | &rx_vr, ©); |
| 875 | if (!err) { |
| 876 | /* Set the correct output iov_len */ |
| 877 | iov1->iov_len = copy.out_len; |
| 878 | verify_out_len(mic, ©); |
| 879 | #ifdef DEBUG |
| 880 | disp_iovec(mic, copy, __func__, |
Ashutosh Dixit | ced2c60 | 2013-09-27 09:49:53 -0700 | [diff] [blame] | 881 | __LINE__); |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 882 | mpsslog("%s %s %d ", |
| 883 | mic->name, __func__, __LINE__); |
| 884 | mpsslog("read from net 0x%lx\n", |
| 885 | sum_iovec_len(copy)); |
| 886 | #endif |
| 887 | len = writev(pty_fd, |
| 888 | copy.iov, copy.iovcnt); |
| 889 | if (len != sum_iovec_len(©)) { |
| 890 | mpsslog("Tun write failed %s ", |
| 891 | strerror(errno)); |
Sudeep Dutt | 6078e0b | 2013-10-02 16:09:00 -0700 | [diff] [blame] | 892 | mpsslog("len 0x%zx ", len); |
| 893 | mpsslog("read_len 0x%zx\n", |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 894 | sum_iovec_len(©)); |
| 895 | } else { |
| 896 | #ifdef DEBUG |
| 897 | disp_iovec(mic, copy, __func__, |
Ashutosh Dixit | ced2c60 | 2013-09-27 09:49:53 -0700 | [diff] [blame] | 898 | __LINE__); |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 899 | mpsslog("%s %s %d ", |
| 900 | mic->name, __func__, |
| 901 | __LINE__); |
| 902 | mpsslog("wrote to tap 0x%lx\n", |
| 903 | len); |
| 904 | #endif |
| 905 | } |
| 906 | } else { |
| 907 | mpsslog("%s %s %d mic_virtio_copy %s\n", |
| 908 | mic->name, __func__, __LINE__, |
| 909 | strerror(errno)); |
| 910 | break; |
| 911 | } |
| 912 | } |
| 913 | } |
| 914 | if (console_poll[NET_FD_VIRTIO_NET].revents & POLLERR) |
| 915 | mpsslog("%s: %s: POLLERR\n", __func__, mic->name); |
| 916 | } |
| 917 | _close_pty: |
| 918 | close(pty_fd); |
| 919 | _return: |
| 920 | pthread_exit(NULL); |
| 921 | } |
| 922 | |
| 923 | static void |
| 924 | add_virtio_device(struct mic_info *mic, struct mic_device_desc *dd) |
| 925 | { |
| 926 | char path[PATH_MAX]; |
| 927 | int fd, err; |
| 928 | |
Sudeep Dutt | c74c931 | 2016-02-08 15:48:18 -0800 | [diff] [blame] | 929 | snprintf(path, PATH_MAX, "/dev/vop_virtio%d", mic->id); |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 930 | fd = open(path, O_RDWR); |
| 931 | if (fd < 0) { |
| 932 | mpsslog("Could not open %s %s\n", path, strerror(errno)); |
| 933 | return; |
| 934 | } |
| 935 | |
| 936 | err = ioctl(fd, MIC_VIRTIO_ADD_DEVICE, dd); |
| 937 | if (err < 0) { |
| 938 | mpsslog("Could not add %d %s\n", dd->type, strerror(errno)); |
| 939 | close(fd); |
| 940 | return; |
| 941 | } |
| 942 | switch (dd->type) { |
| 943 | case VIRTIO_ID_NET: |
| 944 | mic->mic_net.virtio_net_fd = fd; |
| 945 | mpsslog("Added VIRTIO_ID_NET for %s\n", mic->name); |
| 946 | break; |
| 947 | case VIRTIO_ID_CONSOLE: |
| 948 | mic->mic_console.virtio_console_fd = fd; |
| 949 | mpsslog("Added VIRTIO_ID_CONSOLE for %s\n", mic->name); |
| 950 | break; |
| 951 | case VIRTIO_ID_BLOCK: |
| 952 | mic->mic_virtblk.virtio_block_fd = fd; |
| 953 | mpsslog("Added VIRTIO_ID_BLOCK for %s\n", mic->name); |
| 954 | break; |
| 955 | } |
| 956 | } |
| 957 | |
| 958 | static bool |
| 959 | set_backend_file(struct mic_info *mic) |
| 960 | { |
| 961 | FILE *config; |
| 962 | char buff[PATH_MAX], *line, *evv, *p; |
| 963 | |
| 964 | snprintf(buff, PATH_MAX, "%s/mpssd%03d.conf", mic_config_dir, mic->id); |
| 965 | config = fopen(buff, "r"); |
| 966 | if (config == NULL) |
| 967 | return false; |
| 968 | do { /* look for "virtblk_backend=XXXX" */ |
| 969 | line = fgets(buff, PATH_MAX, config); |
| 970 | if (line == NULL) |
| 971 | break; |
| 972 | if (*line == '#') |
| 973 | continue; |
| 974 | p = strchr(line, '\n'); |
| 975 | if (p) |
| 976 | *p = '\0'; |
| 977 | } while (strncmp(line, virtblk_backend, strlen(virtblk_backend)) != 0); |
| 978 | fclose(config); |
| 979 | if (line == NULL) |
| 980 | return false; |
| 981 | evv = strchr(line, '='); |
| 982 | if (evv == NULL) |
| 983 | return false; |
| 984 | mic->mic_virtblk.backend_file = malloc(strlen(evv) + 1); |
| 985 | if (mic->mic_virtblk.backend_file == NULL) { |
Sudeep Dutt | 6078e0b | 2013-10-02 16:09:00 -0700 | [diff] [blame] | 986 | mpsslog("%s %d can't allocate memory\n", mic->name, mic->id); |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 987 | return false; |
| 988 | } |
| 989 | strcpy(mic->mic_virtblk.backend_file, evv + 1); |
| 990 | return true; |
| 991 | } |
| 992 | |
| 993 | #define SECTOR_SIZE 512 |
| 994 | static bool |
| 995 | set_backend_size(struct mic_info *mic) |
| 996 | { |
| 997 | mic->mic_virtblk.backend_size = lseek(mic->mic_virtblk.backend, 0, |
| 998 | SEEK_END); |
| 999 | if (mic->mic_virtblk.backend_size < 0) { |
| 1000 | mpsslog("%s: can't seek: %s\n", |
| 1001 | mic->name, mic->mic_virtblk.backend_file); |
| 1002 | return false; |
| 1003 | } |
| 1004 | virtblk_dev_page.blk_config.capacity = |
| 1005 | mic->mic_virtblk.backend_size / SECTOR_SIZE; |
| 1006 | if ((mic->mic_virtblk.backend_size % SECTOR_SIZE) != 0) |
| 1007 | virtblk_dev_page.blk_config.capacity++; |
| 1008 | |
| 1009 | virtblk_dev_page.blk_config.capacity = |
| 1010 | htole64(virtblk_dev_page.blk_config.capacity); |
| 1011 | |
| 1012 | return true; |
| 1013 | } |
| 1014 | |
| 1015 | static bool |
| 1016 | open_backend(struct mic_info *mic) |
| 1017 | { |
| 1018 | if (!set_backend_file(mic)) |
| 1019 | goto _error_exit; |
| 1020 | mic->mic_virtblk.backend = open(mic->mic_virtblk.backend_file, O_RDWR); |
| 1021 | if (mic->mic_virtblk.backend < 0) { |
| 1022 | mpsslog("%s: can't open: %s\n", mic->name, |
| 1023 | mic->mic_virtblk.backend_file); |
| 1024 | goto _error_free; |
| 1025 | } |
| 1026 | if (!set_backend_size(mic)) |
| 1027 | goto _error_close; |
| 1028 | mic->mic_virtblk.backend_addr = mmap(NULL, |
| 1029 | mic->mic_virtblk.backend_size, |
| 1030 | PROT_READ|PROT_WRITE, MAP_SHARED, |
| 1031 | mic->mic_virtblk.backend, 0L); |
| 1032 | if (mic->mic_virtblk.backend_addr == MAP_FAILED) { |
| 1033 | mpsslog("%s: can't map: %s %s\n", |
| 1034 | mic->name, mic->mic_virtblk.backend_file, |
| 1035 | strerror(errno)); |
| 1036 | goto _error_close; |
| 1037 | } |
| 1038 | return true; |
| 1039 | |
| 1040 | _error_close: |
| 1041 | close(mic->mic_virtblk.backend); |
| 1042 | _error_free: |
| 1043 | free(mic->mic_virtblk.backend_file); |
| 1044 | _error_exit: |
| 1045 | return false; |
| 1046 | } |
| 1047 | |
| 1048 | static void |
| 1049 | close_backend(struct mic_info *mic) |
| 1050 | { |
| 1051 | munmap(mic->mic_virtblk.backend_addr, mic->mic_virtblk.backend_size); |
| 1052 | close(mic->mic_virtblk.backend); |
| 1053 | free(mic->mic_virtblk.backend_file); |
| 1054 | } |
| 1055 | |
| 1056 | static bool |
| 1057 | start_virtblk(struct mic_info *mic, struct mic_vring *vring) |
| 1058 | { |
Sudeep Dutt | 6078e0b | 2013-10-02 16:09:00 -0700 | [diff] [blame] | 1059 | if (((unsigned long)&virtblk_dev_page.blk_config % 8) != 0) { |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 1060 | mpsslog("%s: blk_config is not 8 byte aligned.\n", |
| 1061 | mic->name); |
| 1062 | return false; |
| 1063 | } |
| 1064 | add_virtio_device(mic, &virtblk_dev_page.dd); |
| 1065 | if (MAP_FAILED == init_vr(mic, mic->mic_virtblk.virtio_block_fd, |
Ashutosh Dixit | ced2c60 | 2013-09-27 09:49:53 -0700 | [diff] [blame] | 1066 | VIRTIO_ID_BLOCK, vring, NULL, |
| 1067 | virtblk_dev_page.dd.num_vq)) { |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 1068 | mpsslog("%s init_vr failed %s\n", |
| 1069 | mic->name, strerror(errno)); |
| 1070 | return false; |
| 1071 | } |
| 1072 | return true; |
| 1073 | } |
| 1074 | |
| 1075 | static void |
| 1076 | stop_virtblk(struct mic_info *mic) |
| 1077 | { |
| 1078 | int vr_size, ret; |
| 1079 | |
Ashutosh Dixit | f4a66c2 | 2015-09-29 18:14:30 -0700 | [diff] [blame] | 1080 | vr_size = PAGE_ALIGN(_vring_size(MIC_VRING_ENTRIES, |
| 1081 | MIC_VIRTIO_RING_ALIGN) + |
| 1082 | sizeof(struct _mic_vring_info)); |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 1083 | ret = munmap(mic->mic_virtblk.block_dp, |
| 1084 | MIC_DEVICE_PAGE_END + vr_size * virtblk_dev_page.dd.num_vq); |
| 1085 | if (ret < 0) |
| 1086 | mpsslog("%s munmap errno %d\n", mic->name, errno); |
| 1087 | close(mic->mic_virtblk.virtio_block_fd); |
| 1088 | } |
| 1089 | |
| 1090 | static __u8 |
| 1091 | header_error_check(struct vring_desc *desc) |
| 1092 | { |
| 1093 | if (le32toh(desc->len) != sizeof(struct virtio_blk_outhdr)) { |
| 1094 | mpsslog("%s() %d: length is not sizeof(virtio_blk_outhd)\n", |
Ashutosh Dixit | ced2c60 | 2013-09-27 09:49:53 -0700 | [diff] [blame] | 1095 | __func__, __LINE__); |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 1096 | return -EIO; |
| 1097 | } |
| 1098 | if (!(le16toh(desc->flags) & VRING_DESC_F_NEXT)) { |
| 1099 | mpsslog("%s() %d: alone\n", |
| 1100 | __func__, __LINE__); |
| 1101 | return -EIO; |
| 1102 | } |
| 1103 | if (le16toh(desc->flags) & VRING_DESC_F_WRITE) { |
| 1104 | mpsslog("%s() %d: not read\n", |
| 1105 | __func__, __LINE__); |
| 1106 | return -EIO; |
| 1107 | } |
| 1108 | return 0; |
| 1109 | } |
| 1110 | |
| 1111 | static int |
| 1112 | read_header(int fd, struct virtio_blk_outhdr *hdr, __u32 desc_idx) |
| 1113 | { |
| 1114 | struct iovec iovec; |
| 1115 | struct mic_copy_desc copy; |
| 1116 | |
| 1117 | iovec.iov_len = sizeof(*hdr); |
| 1118 | iovec.iov_base = hdr; |
| 1119 | copy.iov = &iovec; |
| 1120 | copy.iovcnt = 1; |
| 1121 | copy.vr_idx = 0; /* only one vring on virtio_block */ |
| 1122 | copy.update_used = false; /* do not update used index */ |
| 1123 | return ioctl(fd, MIC_VIRTIO_COPY_DESC, ©); |
| 1124 | } |
| 1125 | |
| 1126 | static int |
| 1127 | transfer_blocks(int fd, struct iovec *iovec, __u32 iovcnt) |
| 1128 | { |
| 1129 | struct mic_copy_desc copy; |
| 1130 | |
| 1131 | copy.iov = iovec; |
| 1132 | copy.iovcnt = iovcnt; |
| 1133 | copy.vr_idx = 0; /* only one vring on virtio_block */ |
| 1134 | copy.update_used = false; /* do not update used index */ |
| 1135 | return ioctl(fd, MIC_VIRTIO_COPY_DESC, ©); |
| 1136 | } |
| 1137 | |
| 1138 | static __u8 |
| 1139 | status_error_check(struct vring_desc *desc) |
| 1140 | { |
| 1141 | if (le32toh(desc->len) != sizeof(__u8)) { |
| 1142 | mpsslog("%s() %d: length is not sizeof(status)\n", |
| 1143 | __func__, __LINE__); |
| 1144 | return -EIO; |
| 1145 | } |
| 1146 | return 0; |
| 1147 | } |
| 1148 | |
| 1149 | static int |
| 1150 | write_status(int fd, __u8 *status) |
| 1151 | { |
| 1152 | struct iovec iovec; |
| 1153 | struct mic_copy_desc copy; |
| 1154 | |
| 1155 | iovec.iov_base = status; |
| 1156 | iovec.iov_len = sizeof(*status); |
| 1157 | copy.iov = &iovec; |
| 1158 | copy.iovcnt = 1; |
| 1159 | copy.vr_idx = 0; /* only one vring on virtio_block */ |
| 1160 | copy.update_used = true; /* Update used index */ |
| 1161 | return ioctl(fd, MIC_VIRTIO_COPY_DESC, ©); |
| 1162 | } |
| 1163 | |
Ashutosh Dixit | f4a66c2 | 2015-09-29 18:14:30 -0700 | [diff] [blame] | 1164 | #ifndef VIRTIO_BLK_T_GET_ID |
| 1165 | #define VIRTIO_BLK_T_GET_ID 8 |
| 1166 | #endif |
| 1167 | |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 1168 | static void * |
| 1169 | virtio_block(void *arg) |
| 1170 | { |
Ashutosh Dixit | ced2c60 | 2013-09-27 09:49:53 -0700 | [diff] [blame] | 1171 | struct mic_info *mic = (struct mic_info *)arg; |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 1172 | int ret; |
| 1173 | struct pollfd block_poll; |
| 1174 | struct mic_vring vring; |
| 1175 | __u16 avail_idx; |
| 1176 | __u32 desc_idx; |
| 1177 | struct vring_desc *desc; |
| 1178 | struct iovec *iovec, *piov; |
| 1179 | __u8 status; |
| 1180 | __u32 buffer_desc_idx; |
| 1181 | struct virtio_blk_outhdr hdr; |
| 1182 | void *fos; |
| 1183 | |
| 1184 | for (;;) { /* forever */ |
| 1185 | if (!open_backend(mic)) { /* No virtblk */ |
| 1186 | for (mic->mic_virtblk.signaled = 0; |
| 1187 | !mic->mic_virtblk.signaled;) |
| 1188 | sleep(1); |
| 1189 | continue; |
| 1190 | } |
| 1191 | |
| 1192 | /* backend file is specified. */ |
| 1193 | if (!start_virtblk(mic, &vring)) |
| 1194 | goto _close_backend; |
| 1195 | iovec = malloc(sizeof(*iovec) * |
| 1196 | le32toh(virtblk_dev_page.blk_config.seg_max)); |
| 1197 | if (!iovec) { |
| 1198 | mpsslog("%s: can't alloc iovec: %s\n", |
| 1199 | mic->name, strerror(ENOMEM)); |
| 1200 | goto _stop_virtblk; |
| 1201 | } |
| 1202 | |
| 1203 | block_poll.fd = mic->mic_virtblk.virtio_block_fd; |
| 1204 | block_poll.events = POLLIN; |
| 1205 | for (mic->mic_virtblk.signaled = 0; |
| 1206 | !mic->mic_virtblk.signaled;) { |
| 1207 | block_poll.revents = 0; |
| 1208 | /* timeout in 1 sec to see signaled */ |
| 1209 | ret = poll(&block_poll, 1, 1000); |
| 1210 | if (ret < 0) { |
| 1211 | mpsslog("%s %d: poll failed: %s\n", |
| 1212 | __func__, __LINE__, |
| 1213 | strerror(errno)); |
| 1214 | continue; |
| 1215 | } |
| 1216 | |
| 1217 | if (!(block_poll.revents & POLLIN)) { |
| 1218 | #ifdef DEBUG |
| 1219 | mpsslog("%s %d: block_poll.revents=0x%x\n", |
| 1220 | __func__, __LINE__, block_poll.revents); |
| 1221 | #endif |
| 1222 | continue; |
| 1223 | } |
| 1224 | |
| 1225 | /* POLLIN */ |
| 1226 | while (vring.info->avail_idx != |
| 1227 | le16toh(vring.vr.avail->idx)) { |
| 1228 | /* read header element */ |
| 1229 | avail_idx = |
| 1230 | vring.info->avail_idx & |
| 1231 | (vring.vr.num - 1); |
| 1232 | desc_idx = le16toh( |
| 1233 | vring.vr.avail->ring[avail_idx]); |
| 1234 | desc = &vring.vr.desc[desc_idx]; |
| 1235 | #ifdef DEBUG |
| 1236 | mpsslog("%s() %d: avail_idx=%d ", |
| 1237 | __func__, __LINE__, |
| 1238 | vring.info->avail_idx); |
| 1239 | mpsslog("vring.vr.num=%d desc=%p\n", |
| 1240 | vring.vr.num, desc); |
| 1241 | #endif |
| 1242 | status = header_error_check(desc); |
| 1243 | ret = read_header( |
| 1244 | mic->mic_virtblk.virtio_block_fd, |
| 1245 | &hdr, desc_idx); |
| 1246 | if (ret < 0) { |
| 1247 | mpsslog("%s() %d %s: ret=%d %s\n", |
| 1248 | __func__, __LINE__, |
| 1249 | mic->name, ret, |
| 1250 | strerror(errno)); |
| 1251 | break; |
| 1252 | } |
| 1253 | /* buffer element */ |
| 1254 | piov = iovec; |
| 1255 | status = 0; |
| 1256 | fos = mic->mic_virtblk.backend_addr + |
| 1257 | (hdr.sector * SECTOR_SIZE); |
Ashutosh Dixit | ced2c60 | 2013-09-27 09:49:53 -0700 | [diff] [blame] | 1258 | buffer_desc_idx = next_desc(desc); |
| 1259 | desc_idx = buffer_desc_idx; |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 1260 | for (desc = &vring.vr.desc[buffer_desc_idx]; |
| 1261 | desc->flags & VRING_DESC_F_NEXT; |
| 1262 | desc_idx = next_desc(desc), |
| 1263 | desc = &vring.vr.desc[desc_idx]) { |
| 1264 | piov->iov_len = desc->len; |
| 1265 | piov->iov_base = fos; |
| 1266 | piov++; |
| 1267 | fos += desc->len; |
| 1268 | } |
| 1269 | /* Returning NULLs for VIRTIO_BLK_T_GET_ID. */ |
| 1270 | if (hdr.type & ~(VIRTIO_BLK_T_OUT | |
| 1271 | VIRTIO_BLK_T_GET_ID)) { |
| 1272 | /* |
| 1273 | VIRTIO_BLK_T_IN - does not do |
| 1274 | anything. Probably for documenting. |
| 1275 | VIRTIO_BLK_T_SCSI_CMD - for |
| 1276 | virtio_scsi. |
| 1277 | VIRTIO_BLK_T_FLUSH - turned off in |
| 1278 | config space. |
| 1279 | VIRTIO_BLK_T_BARRIER - defined but not |
| 1280 | used in anywhere. |
| 1281 | */ |
| 1282 | mpsslog("%s() %d: type %x ", |
| 1283 | __func__, __LINE__, |
| 1284 | hdr.type); |
| 1285 | mpsslog("is not supported\n"); |
| 1286 | status = -ENOTSUP; |
| 1287 | |
| 1288 | } else { |
| 1289 | ret = transfer_blocks( |
| 1290 | mic->mic_virtblk.virtio_block_fd, |
| 1291 | iovec, |
| 1292 | piov - iovec); |
| 1293 | if (ret < 0 && |
Ashutosh Dixit | ced2c60 | 2013-09-27 09:49:53 -0700 | [diff] [blame] | 1294 | status != 0) |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 1295 | status = ret; |
| 1296 | } |
| 1297 | /* write status and update used pointer */ |
| 1298 | if (status != 0) |
| 1299 | status = status_error_check(desc); |
| 1300 | ret = write_status( |
| 1301 | mic->mic_virtblk.virtio_block_fd, |
| 1302 | &status); |
| 1303 | #ifdef DEBUG |
| 1304 | mpsslog("%s() %d: write status=%d on desc=%p\n", |
| 1305 | __func__, __LINE__, |
| 1306 | status, desc); |
| 1307 | #endif |
| 1308 | } |
| 1309 | } |
| 1310 | free(iovec); |
| 1311 | _stop_virtblk: |
| 1312 | stop_virtblk(mic); |
| 1313 | _close_backend: |
| 1314 | close_backend(mic); |
| 1315 | } /* forever */ |
| 1316 | |
| 1317 | pthread_exit(NULL); |
| 1318 | } |
| 1319 | |
| 1320 | static void |
| 1321 | reset(struct mic_info *mic) |
| 1322 | { |
| 1323 | #define RESET_TIMEOUT 120 |
| 1324 | int i = RESET_TIMEOUT; |
| 1325 | setsysfs(mic->name, "state", "reset"); |
| 1326 | while (i) { |
| 1327 | char *state; |
| 1328 | state = readsysfs(mic->name, "state"); |
| 1329 | if (!state) |
| 1330 | goto retry; |
| 1331 | mpsslog("%s: %s %d state %s\n", |
| 1332 | mic->name, __func__, __LINE__, state); |
Dasaratharaman Chandramouli | af19049 | 2013-10-03 18:06:23 -0700 | [diff] [blame] | 1333 | |
Ashutosh Dixit | f4a66c2 | 2015-09-29 18:14:30 -0700 | [diff] [blame] | 1334 | if (!strcmp(state, "ready")) { |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 1335 | free(state); |
| 1336 | break; |
| 1337 | } |
| 1338 | free(state); |
| 1339 | retry: |
| 1340 | sleep(1); |
| 1341 | i--; |
| 1342 | } |
| 1343 | } |
| 1344 | |
| 1345 | static int |
| 1346 | get_mic_shutdown_status(struct mic_info *mic, char *shutdown_status) |
| 1347 | { |
| 1348 | if (!strcmp(shutdown_status, "nop")) |
| 1349 | return MIC_NOP; |
| 1350 | if (!strcmp(shutdown_status, "crashed")) |
| 1351 | return MIC_CRASHED; |
| 1352 | if (!strcmp(shutdown_status, "halted")) |
| 1353 | return MIC_HALTED; |
| 1354 | if (!strcmp(shutdown_status, "poweroff")) |
| 1355 | return MIC_POWER_OFF; |
| 1356 | if (!strcmp(shutdown_status, "restart")) |
| 1357 | return MIC_RESTART; |
| 1358 | mpsslog("%s: BUG invalid status %s\n", mic->name, shutdown_status); |
| 1359 | /* Invalid state */ |
| 1360 | assert(0); |
| 1361 | }; |
| 1362 | |
Ashutosh Dixit | f4a66c2 | 2015-09-29 18:14:30 -0700 | [diff] [blame] | 1363 | static int get_mic_state(struct mic_info *mic) |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 1364 | { |
Ashutosh Dixit | f4a66c2 | 2015-09-29 18:14:30 -0700 | [diff] [blame] | 1365 | char *state = NULL; |
| 1366 | enum mic_states mic_state; |
| 1367 | |
| 1368 | while (!state) { |
| 1369 | state = readsysfs(mic->name, "state"); |
| 1370 | sleep(1); |
| 1371 | } |
| 1372 | mpsslog("%s: %s %d state %s\n", |
| 1373 | mic->name, __func__, __LINE__, state); |
| 1374 | |
| 1375 | if (!strcmp(state, "ready")) { |
| 1376 | mic_state = MIC_READY; |
| 1377 | } else if (!strcmp(state, "booting")) { |
| 1378 | mic_state = MIC_BOOTING; |
| 1379 | } else if (!strcmp(state, "online")) { |
| 1380 | mic_state = MIC_ONLINE; |
| 1381 | } else if (!strcmp(state, "shutting_down")) { |
| 1382 | mic_state = MIC_SHUTTING_DOWN; |
| 1383 | } else if (!strcmp(state, "reset_failed")) { |
| 1384 | mic_state = MIC_RESET_FAILED; |
| 1385 | } else if (!strcmp(state, "resetting")) { |
| 1386 | mic_state = MIC_RESETTING; |
| 1387 | } else { |
| 1388 | mpsslog("%s: BUG invalid state %s\n", mic->name, state); |
| 1389 | assert(0); |
| 1390 | } |
| 1391 | |
| 1392 | free(state); |
| 1393 | return mic_state; |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 1394 | }; |
| 1395 | |
| 1396 | static void mic_handle_shutdown(struct mic_info *mic) |
| 1397 | { |
| 1398 | #define SHUTDOWN_TIMEOUT 60 |
Ashutosh Dixit | f4a66c2 | 2015-09-29 18:14:30 -0700 | [diff] [blame] | 1399 | int i = SHUTDOWN_TIMEOUT; |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 1400 | char *shutdown_status; |
| 1401 | while (i) { |
| 1402 | shutdown_status = readsysfs(mic->name, "shutdown_status"); |
Ashutosh Dixit | f4a66c2 | 2015-09-29 18:14:30 -0700 | [diff] [blame] | 1403 | if (!shutdown_status) { |
| 1404 | sleep(1); |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 1405 | continue; |
Ashutosh Dixit | f4a66c2 | 2015-09-29 18:14:30 -0700 | [diff] [blame] | 1406 | } |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 1407 | mpsslog("%s: %s %d shutdown_status %s\n", |
| 1408 | mic->name, __func__, __LINE__, shutdown_status); |
| 1409 | switch (get_mic_shutdown_status(mic, shutdown_status)) { |
| 1410 | case MIC_RESTART: |
| 1411 | mic->restart = 1; |
| 1412 | case MIC_HALTED: |
| 1413 | case MIC_POWER_OFF: |
| 1414 | case MIC_CRASHED: |
| 1415 | free(shutdown_status); |
| 1416 | goto reset; |
| 1417 | default: |
| 1418 | break; |
| 1419 | } |
| 1420 | free(shutdown_status); |
| 1421 | sleep(1); |
| 1422 | i--; |
| 1423 | } |
| 1424 | reset: |
Ashutosh Dixit | f4a66c2 | 2015-09-29 18:14:30 -0700 | [diff] [blame] | 1425 | if (!i) |
| 1426 | mpsslog("%s: %s %d timing out waiting for shutdown_status %s\n", |
| 1427 | mic->name, __func__, __LINE__, shutdown_status); |
| 1428 | reset(mic); |
| 1429 | } |
| 1430 | |
| 1431 | static int open_state_fd(struct mic_info *mic) |
| 1432 | { |
| 1433 | char pathname[PATH_MAX]; |
| 1434 | int fd; |
| 1435 | |
| 1436 | snprintf(pathname, PATH_MAX - 1, "%s/%s/%s", |
| 1437 | MICSYSFSDIR, mic->name, "state"); |
| 1438 | |
| 1439 | fd = open(pathname, O_RDONLY); |
| 1440 | if (fd < 0) |
| 1441 | mpsslog("%s: opening file %s failed %s\n", |
| 1442 | mic->name, pathname, strerror(errno)); |
| 1443 | return fd; |
| 1444 | } |
| 1445 | |
| 1446 | static int block_till_state_change(int fd, struct mic_info *mic) |
| 1447 | { |
| 1448 | struct pollfd ufds[1]; |
| 1449 | char value[PAGE_SIZE]; |
| 1450 | int ret; |
| 1451 | |
| 1452 | ufds[0].fd = fd; |
| 1453 | ufds[0].events = POLLERR | POLLPRI; |
| 1454 | ret = poll(ufds, 1, -1); |
| 1455 | if (ret < 0) { |
| 1456 | mpsslog("%s: %s %d poll failed %s\n", |
| 1457 | mic->name, __func__, __LINE__, strerror(errno)); |
| 1458 | return ret; |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 1459 | } |
Ashutosh Dixit | f4a66c2 | 2015-09-29 18:14:30 -0700 | [diff] [blame] | 1460 | |
| 1461 | ret = lseek(fd, 0, SEEK_SET); |
| 1462 | if (ret < 0) { |
| 1463 | mpsslog("%s: %s %d Failed to seek to 0: %s\n", |
| 1464 | mic->name, __func__, __LINE__, strerror(errno)); |
| 1465 | return ret; |
| 1466 | } |
| 1467 | |
| 1468 | ret = read(fd, value, sizeof(value)); |
| 1469 | if (ret < 0) { |
| 1470 | mpsslog("%s: %s %d Failed to read sysfs entry: %s\n", |
| 1471 | mic->name, __func__, __LINE__, strerror(errno)); |
| 1472 | return ret; |
| 1473 | } |
| 1474 | |
| 1475 | return 0; |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 1476 | } |
| 1477 | |
| 1478 | static void * |
| 1479 | mic_config(void *arg) |
| 1480 | { |
| 1481 | struct mic_info *mic = (struct mic_info *)arg; |
Ashutosh Dixit | f4a66c2 | 2015-09-29 18:14:30 -0700 | [diff] [blame] | 1482 | int fd, ret, stat = 0; |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 1483 | |
Ashutosh Dixit | f4a66c2 | 2015-09-29 18:14:30 -0700 | [diff] [blame] | 1484 | fd = open_state_fd(mic); |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 1485 | if (fd < 0) { |
Ashutosh Dixit | f4a66c2 | 2015-09-29 18:14:30 -0700 | [diff] [blame] | 1486 | mpsslog("%s: %s %d open state fd failed %s\n", |
| 1487 | mic->name, __func__, __LINE__, strerror(errno)); |
| 1488 | goto exit; |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 1489 | } |
| 1490 | |
| 1491 | do { |
Ashutosh Dixit | f4a66c2 | 2015-09-29 18:14:30 -0700 | [diff] [blame] | 1492 | ret = block_till_state_change(fd, mic); |
Ashutosh Dixit | 286c240 | 2013-11-27 08:58:40 -0800 | [diff] [blame] | 1493 | if (ret < 0) { |
Ashutosh Dixit | f4a66c2 | 2015-09-29 18:14:30 -0700 | [diff] [blame] | 1494 | mpsslog("%s: %s %d block_till_state_change error %s\n", |
| 1495 | mic->name, __func__, __LINE__, strerror(errno)); |
| 1496 | goto close_exit; |
Ashutosh Dixit | 286c240 | 2013-11-27 08:58:40 -0800 | [diff] [blame] | 1497 | } |
Ashutosh Dixit | f4a66c2 | 2015-09-29 18:14:30 -0700 | [diff] [blame] | 1498 | |
| 1499 | switch (get_mic_state(mic)) { |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 1500 | case MIC_SHUTTING_DOWN: |
| 1501 | mic_handle_shutdown(mic); |
Ashutosh Dixit | f4a66c2 | 2015-09-29 18:14:30 -0700 | [diff] [blame] | 1502 | break; |
| 1503 | case MIC_READY: |
| 1504 | case MIC_RESET_FAILED: |
| 1505 | ret = kill(mic->pid, SIGTERM); |
| 1506 | mpsslog("%s: %s %d kill pid %d ret %d\n", |
| 1507 | mic->name, __func__, __LINE__, |
| 1508 | mic->pid, ret); |
| 1509 | if (!ret) { |
| 1510 | ret = waitpid(mic->pid, &stat, |
| 1511 | WIFSIGNALED(stat)); |
| 1512 | mpsslog("%s: %s %d waitpid ret %d pid %d\n", |
| 1513 | mic->name, __func__, __LINE__, |
| 1514 | ret, mic->pid); |
| 1515 | } |
Dasaratharaman Chandramouli | af19049 | 2013-10-03 18:06:23 -0700 | [diff] [blame] | 1516 | if (mic->boot_on_resume) { |
| 1517 | setsysfs(mic->name, "state", "boot"); |
| 1518 | mic->boot_on_resume = 0; |
| 1519 | } |
Ashutosh Dixit | f4a66c2 | 2015-09-29 18:14:30 -0700 | [diff] [blame] | 1520 | goto close_exit; |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 1521 | default: |
| 1522 | break; |
| 1523 | } |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 1524 | } while (1); |
Ashutosh Dixit | f4a66c2 | 2015-09-29 18:14:30 -0700 | [diff] [blame] | 1525 | |
| 1526 | close_exit: |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 1527 | close(fd); |
Ashutosh Dixit | f4a66c2 | 2015-09-29 18:14:30 -0700 | [diff] [blame] | 1528 | exit: |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 1529 | init_mic(mic); |
| 1530 | pthread_exit(NULL); |
| 1531 | } |
| 1532 | |
| 1533 | static void |
| 1534 | set_cmdline(struct mic_info *mic) |
| 1535 | { |
| 1536 | char buffer[PATH_MAX]; |
| 1537 | int len; |
| 1538 | |
| 1539 | len = snprintf(buffer, PATH_MAX, |
| 1540 | "clocksource=tsc highres=off nohz=off "); |
Mike Danese | 3610a2a | 2016-05-19 21:54:51 -0700 | [diff] [blame] | 1541 | len += snprintf(buffer + len, PATH_MAX - len, |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 1542 | "cpufreq_on;corec6_off;pc3_off;pc6_off "); |
Mike Danese | 3610a2a | 2016-05-19 21:54:51 -0700 | [diff] [blame] | 1543 | len += snprintf(buffer + len, PATH_MAX - len, |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 1544 | "ifcfg=static;address,172.31.%d.1;netmask,255.255.255.0", |
Ashutosh Dixit | f4a66c2 | 2015-09-29 18:14:30 -0700 | [diff] [blame] | 1545 | mic->id + 1); |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 1546 | |
| 1547 | setsysfs(mic->name, "cmdline", buffer); |
| 1548 | mpsslog("%s: Command line: \"%s\"\n", mic->name, buffer); |
Ashutosh Dixit | f4a66c2 | 2015-09-29 18:14:30 -0700 | [diff] [blame] | 1549 | snprintf(buffer, PATH_MAX, "172.31.%d.1", mic->id + 1); |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 1550 | mpsslog("%s: IPADDR: \"%s\"\n", mic->name, buffer); |
| 1551 | } |
| 1552 | |
| 1553 | static void |
| 1554 | set_log_buf_info(struct mic_info *mic) |
| 1555 | { |
| 1556 | int fd; |
| 1557 | off_t len; |
| 1558 | char system_map[] = "/lib/firmware/mic/System.map"; |
| 1559 | char *map, *temp, log_buf[17] = {'\0'}; |
| 1560 | |
| 1561 | fd = open(system_map, O_RDONLY); |
| 1562 | if (fd < 0) { |
| 1563 | mpsslog("%s: Opening System.map failed: %d\n", |
| 1564 | mic->name, errno); |
| 1565 | return; |
| 1566 | } |
| 1567 | len = lseek(fd, 0, SEEK_END); |
| 1568 | if (len < 0) { |
| 1569 | mpsslog("%s: Reading System.map size failed: %d\n", |
| 1570 | mic->name, errno); |
| 1571 | close(fd); |
| 1572 | return; |
| 1573 | } |
| 1574 | map = mmap(NULL, len, PROT_READ, MAP_PRIVATE, fd, 0); |
| 1575 | if (map == MAP_FAILED) { |
| 1576 | mpsslog("%s: mmap of System.map failed: %d\n", |
| 1577 | mic->name, errno); |
| 1578 | close(fd); |
| 1579 | return; |
| 1580 | } |
| 1581 | temp = strstr(map, "__log_buf"); |
| 1582 | if (!temp) { |
| 1583 | mpsslog("%s: __log_buf not found: %d\n", mic->name, errno); |
| 1584 | munmap(map, len); |
| 1585 | close(fd); |
| 1586 | return; |
| 1587 | } |
| 1588 | strncpy(log_buf, temp - 19, 16); |
| 1589 | setsysfs(mic->name, "log_buf_addr", log_buf); |
| 1590 | mpsslog("%s: log_buf_addr: %s\n", mic->name, log_buf); |
| 1591 | temp = strstr(map, "log_buf_len"); |
| 1592 | if (!temp) { |
| 1593 | mpsslog("%s: log_buf_len not found: %d\n", mic->name, errno); |
| 1594 | munmap(map, len); |
| 1595 | close(fd); |
| 1596 | return; |
| 1597 | } |
| 1598 | strncpy(log_buf, temp - 19, 16); |
| 1599 | setsysfs(mic->name, "log_buf_len", log_buf); |
| 1600 | mpsslog("%s: log_buf_len: %s\n", mic->name, log_buf); |
| 1601 | munmap(map, len); |
| 1602 | close(fd); |
| 1603 | } |
| 1604 | |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 1605 | static void |
| 1606 | change_virtblk_backend(int x, siginfo_t *siginfo, void *p) |
| 1607 | { |
| 1608 | struct mic_info *mic; |
| 1609 | |
| 1610 | for (mic = mic_list.next; mic != NULL; mic = mic->next) |
| 1611 | mic->mic_virtblk.signaled = 1/* true */; |
| 1612 | } |
| 1613 | |
| 1614 | static void |
Ashutosh Dixit | f4a66c2 | 2015-09-29 18:14:30 -0700 | [diff] [blame] | 1615 | set_mic_boot_params(struct mic_info *mic) |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 1616 | { |
Ashutosh Dixit | f4a66c2 | 2015-09-29 18:14:30 -0700 | [diff] [blame] | 1617 | set_log_buf_info(mic); |
| 1618 | set_cmdline(mic); |
| 1619 | } |
| 1620 | |
| 1621 | static void * |
| 1622 | init_mic(void *arg) |
| 1623 | { |
| 1624 | struct mic_info *mic = (struct mic_info *)arg; |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 1625 | struct sigaction ignore = { |
| 1626 | .sa_flags = 0, |
| 1627 | .sa_handler = SIG_IGN |
| 1628 | }; |
| 1629 | struct sigaction act = { |
| 1630 | .sa_flags = SA_SIGINFO, |
| 1631 | .sa_sigaction = change_virtblk_backend, |
| 1632 | }; |
| 1633 | char buffer[PATH_MAX]; |
Ashutosh Dixit | f4a66c2 | 2015-09-29 18:14:30 -0700 | [diff] [blame] | 1634 | int err, fd; |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 1635 | |
| 1636 | /* |
| 1637 | * Currently, one virtio block device is supported for each MIC card |
| 1638 | * at a time. Any user (or test) can send a SIGUSR1 to the MIC daemon. |
| 1639 | * The signal informs the virtio block backend about a change in the |
| 1640 | * configuration file which specifies the virtio backend file name on |
| 1641 | * the host. Virtio block backend then re-reads the configuration file |
| 1642 | * and switches to the new block device. This signalling mechanism may |
| 1643 | * not be required once multiple virtio block devices are supported by |
| 1644 | * the MIC daemon. |
| 1645 | */ |
| 1646 | sigaction(SIGUSR1, &ignore, NULL); |
Ashutosh Dixit | f4a66c2 | 2015-09-29 18:14:30 -0700 | [diff] [blame] | 1647 | retry: |
| 1648 | fd = open_state_fd(mic); |
| 1649 | if (fd < 0) { |
| 1650 | mpsslog("%s: %s %d open state fd failed %s\n", |
| 1651 | mic->name, __func__, __LINE__, strerror(errno)); |
| 1652 | sleep(2); |
| 1653 | goto retry; |
| 1654 | } |
| 1655 | |
| 1656 | if (mic->restart) { |
| 1657 | snprintf(buffer, PATH_MAX, "boot"); |
| 1658 | setsysfs(mic->name, "state", buffer); |
| 1659 | mpsslog("%s restarting mic %d\n", |
| 1660 | mic->name, mic->restart); |
| 1661 | mic->restart = 0; |
| 1662 | } |
| 1663 | |
| 1664 | while (1) { |
| 1665 | while (block_till_state_change(fd, mic)) { |
| 1666 | mpsslog("%s: %s %d block_till_state_change error %s\n", |
| 1667 | mic->name, __func__, __LINE__, strerror(errno)); |
| 1668 | sleep(2); |
| 1669 | continue; |
| 1670 | } |
| 1671 | |
| 1672 | if (get_mic_state(mic) == MIC_BOOTING) |
| 1673 | break; |
| 1674 | } |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 1675 | |
| 1676 | mic->pid = fork(); |
| 1677 | switch (mic->pid) { |
| 1678 | case 0: |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 1679 | add_virtio_device(mic, &virtcons_dev_page.dd); |
| 1680 | add_virtio_device(mic, &virtnet_dev_page.dd); |
| 1681 | err = pthread_create(&mic->mic_console.console_thread, NULL, |
| 1682 | virtio_console, mic); |
| 1683 | if (err) |
| 1684 | mpsslog("%s virtcons pthread_create failed %s\n", |
Ashutosh Dixit | ced2c60 | 2013-09-27 09:49:53 -0700 | [diff] [blame] | 1685 | mic->name, strerror(err)); |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 1686 | err = pthread_create(&mic->mic_net.net_thread, NULL, |
| 1687 | virtio_net, mic); |
| 1688 | if (err) |
| 1689 | mpsslog("%s virtnet pthread_create failed %s\n", |
Ashutosh Dixit | ced2c60 | 2013-09-27 09:49:53 -0700 | [diff] [blame] | 1690 | mic->name, strerror(err)); |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 1691 | err = pthread_create(&mic->mic_virtblk.block_thread, NULL, |
| 1692 | virtio_block, mic); |
| 1693 | if (err) |
| 1694 | mpsslog("%s virtblk pthread_create failed %s\n", |
Ashutosh Dixit | ced2c60 | 2013-09-27 09:49:53 -0700 | [diff] [blame] | 1695 | mic->name, strerror(err)); |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 1696 | sigemptyset(&act.sa_mask); |
| 1697 | err = sigaction(SIGUSR1, &act, NULL); |
| 1698 | if (err) |
| 1699 | mpsslog("%s sigaction SIGUSR1 failed %s\n", |
Ashutosh Dixit | ced2c60 | 2013-09-27 09:49:53 -0700 | [diff] [blame] | 1700 | mic->name, strerror(errno)); |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 1701 | while (1) |
| 1702 | sleep(60); |
| 1703 | case -1: |
| 1704 | mpsslog("fork failed MIC name %s id %d errno %d\n", |
| 1705 | mic->name, mic->id, errno); |
| 1706 | break; |
| 1707 | default: |
Ashutosh Dixit | f4a66c2 | 2015-09-29 18:14:30 -0700 | [diff] [blame] | 1708 | err = pthread_create(&mic->config_thread, NULL, |
| 1709 | mic_config, mic); |
| 1710 | if (err) |
| 1711 | mpsslog("%s mic_config pthread_create failed %s\n", |
| 1712 | mic->name, strerror(err)); |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 1713 | } |
Ashutosh Dixit | f4a66c2 | 2015-09-29 18:14:30 -0700 | [diff] [blame] | 1714 | |
| 1715 | return NULL; |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 1716 | } |
| 1717 | |
| 1718 | static void |
| 1719 | start_daemon(void) |
| 1720 | { |
| 1721 | struct mic_info *mic; |
Ashutosh Dixit | f4a66c2 | 2015-09-29 18:14:30 -0700 | [diff] [blame] | 1722 | int err; |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 1723 | |
Ashutosh Dixit | f4a66c2 | 2015-09-29 18:14:30 -0700 | [diff] [blame] | 1724 | for (mic = mic_list.next; mic; mic = mic->next) { |
| 1725 | set_mic_boot_params(mic); |
| 1726 | err = pthread_create(&mic->init_thread, NULL, init_mic, mic); |
| 1727 | if (err) |
| 1728 | mpsslog("%s init_mic pthread_create failed %s\n", |
| 1729 | mic->name, strerror(err)); |
| 1730 | } |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 1731 | |
| 1732 | while (1) |
| 1733 | sleep(60); |
| 1734 | } |
| 1735 | |
| 1736 | static int |
| 1737 | init_mic_list(void) |
| 1738 | { |
| 1739 | struct mic_info *mic = &mic_list; |
| 1740 | struct dirent *file; |
| 1741 | DIR *dp; |
| 1742 | int cnt = 0; |
| 1743 | |
| 1744 | dp = opendir(MICSYSFSDIR); |
| 1745 | if (!dp) |
| 1746 | return 0; |
| 1747 | |
| 1748 | while ((file = readdir(dp)) != NULL) { |
| 1749 | if (!strncmp(file->d_name, "mic", 3)) { |
Dasaratharaman Chandramouli | af19049 | 2013-10-03 18:06:23 -0700 | [diff] [blame] | 1750 | mic->next = calloc(1, sizeof(struct mic_info)); |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 1751 | if (mic->next) { |
| 1752 | mic = mic->next; |
Caz Yokoyama | 8d49751 | 2013-09-05 16:42:39 -0700 | [diff] [blame] | 1753 | mic->id = atoi(&file->d_name[3]); |
| 1754 | mic->name = malloc(strlen(file->d_name) + 16); |
| 1755 | if (mic->name) |
| 1756 | strcpy(mic->name, file->d_name); |
| 1757 | mpsslog("MIC name %s id %d\n", mic->name, |
| 1758 | mic->id); |
| 1759 | cnt++; |
| 1760 | } |
| 1761 | } |
| 1762 | } |
| 1763 | |
| 1764 | closedir(dp); |
| 1765 | return cnt; |
| 1766 | } |
| 1767 | |
| 1768 | void |
| 1769 | mpsslog(char *format, ...) |
| 1770 | { |
| 1771 | va_list args; |
| 1772 | char buffer[4096]; |
| 1773 | char ts[52], *ts1; |
| 1774 | time_t t; |
| 1775 | |
| 1776 | if (logfp == NULL) |
| 1777 | return; |
| 1778 | |
| 1779 | va_start(args, format); |
| 1780 | vsprintf(buffer, format, args); |
| 1781 | va_end(args); |
| 1782 | |
| 1783 | time(&t); |
| 1784 | ts1 = ctime_r(&t, ts); |
| 1785 | ts1[strlen(ts1) - 1] = '\0'; |
| 1786 | fprintf(logfp, "%s: %s", ts1, buffer); |
| 1787 | |
| 1788 | fflush(logfp); |
| 1789 | } |
| 1790 | |
| 1791 | int |
| 1792 | main(int argc, char *argv[]) |
| 1793 | { |
| 1794 | int cnt; |
| 1795 | pid_t pid; |
| 1796 | |
| 1797 | myname = argv[0]; |
| 1798 | |
| 1799 | logfp = fopen(LOGFILE_NAME, "a+"); |
| 1800 | if (!logfp) { |
| 1801 | fprintf(stderr, "cannot open logfile '%s'\n", LOGFILE_NAME); |
| 1802 | exit(1); |
| 1803 | } |
| 1804 | pid = fork(); |
| 1805 | switch (pid) { |
| 1806 | case 0: |
| 1807 | break; |
| 1808 | case -1: |
| 1809 | exit(2); |
| 1810 | default: |
| 1811 | exit(0); |
| 1812 | } |
| 1813 | |
| 1814 | mpsslog("MIC Daemon start\n"); |
| 1815 | |
| 1816 | cnt = init_mic_list(); |
| 1817 | if (cnt == 0) { |
| 1818 | mpsslog("MIC module not loaded\n"); |
| 1819 | exit(3); |
| 1820 | } |
| 1821 | mpsslog("MIC found %d devices\n", cnt); |
| 1822 | |
| 1823 | start_daemon(); |
| 1824 | |
| 1825 | exit(0); |
| 1826 | } |