13d14c5d2SYehuda Sadeh 23d14c5d2SYehuda Sadeh #include <linux/ceph/ceph_debug.h> 33d14c5d2SYehuda Sadeh 43d14c5d2SYehuda Sadeh #include <linux/module.h> 53d14c5d2SYehuda Sadeh #include <linux/slab.h> 63d14c5d2SYehuda Sadeh #include <asm/div64.h> 73d14c5d2SYehuda Sadeh 83d14c5d2SYehuda Sadeh #include <linux/ceph/libceph.h> 93d14c5d2SYehuda Sadeh #include <linux/ceph/osdmap.h> 103d14c5d2SYehuda Sadeh #include <linux/ceph/decode.h> 113d14c5d2SYehuda Sadeh #include <linux/crush/hash.h> 123d14c5d2SYehuda Sadeh #include <linux/crush/mapper.h> 133d14c5d2SYehuda Sadeh 143d14c5d2SYehuda Sadeh char *ceph_osdmap_state_str(char *str, int len, int state) 153d14c5d2SYehuda Sadeh { 163d14c5d2SYehuda Sadeh int flag = 0; 173d14c5d2SYehuda Sadeh 183d14c5d2SYehuda Sadeh if (!len) 193d14c5d2SYehuda Sadeh goto done; 203d14c5d2SYehuda Sadeh 213d14c5d2SYehuda Sadeh *str = '\0'; 223d14c5d2SYehuda Sadeh if (state) { 233d14c5d2SYehuda Sadeh if (state & CEPH_OSD_EXISTS) { 243d14c5d2SYehuda Sadeh snprintf(str, len, "exists"); 253d14c5d2SYehuda Sadeh flag = 1; 263d14c5d2SYehuda Sadeh } 273d14c5d2SYehuda Sadeh if (state & CEPH_OSD_UP) { 283d14c5d2SYehuda Sadeh snprintf(str, len, "%s%s%s", str, (flag ? ", " : ""), 293d14c5d2SYehuda Sadeh "up"); 303d14c5d2SYehuda Sadeh flag = 1; 313d14c5d2SYehuda Sadeh } 323d14c5d2SYehuda Sadeh } else { 333d14c5d2SYehuda Sadeh snprintf(str, len, "doesn't exist"); 343d14c5d2SYehuda Sadeh } 353d14c5d2SYehuda Sadeh done: 363d14c5d2SYehuda Sadeh return str; 373d14c5d2SYehuda Sadeh } 383d14c5d2SYehuda Sadeh 393d14c5d2SYehuda Sadeh /* maps */ 403d14c5d2SYehuda Sadeh 4195c96174SEric Dumazet static int calc_bits_of(unsigned int t) 423d14c5d2SYehuda Sadeh { 433d14c5d2SYehuda Sadeh int b = 0; 443d14c5d2SYehuda Sadeh while (t) { 453d14c5d2SYehuda Sadeh t = t >> 1; 463d14c5d2SYehuda Sadeh b++; 473d14c5d2SYehuda Sadeh } 483d14c5d2SYehuda Sadeh return b; 493d14c5d2SYehuda Sadeh } 503d14c5d2SYehuda Sadeh 513d14c5d2SYehuda Sadeh /* 523d14c5d2SYehuda Sadeh * the foo_mask is the smallest value 2^n-1 that is >= foo. 533d14c5d2SYehuda Sadeh */ 543d14c5d2SYehuda Sadeh static void calc_pg_masks(struct ceph_pg_pool_info *pi) 553d14c5d2SYehuda Sadeh { 563d14c5d2SYehuda Sadeh pi->pg_num_mask = (1 << calc_bits_of(le32_to_cpu(pi->v.pg_num)-1)) - 1; 573d14c5d2SYehuda Sadeh pi->pgp_num_mask = 583d14c5d2SYehuda Sadeh (1 << calc_bits_of(le32_to_cpu(pi->v.pgp_num)-1)) - 1; 593d14c5d2SYehuda Sadeh pi->lpg_num_mask = 603d14c5d2SYehuda Sadeh (1 << calc_bits_of(le32_to_cpu(pi->v.lpg_num)-1)) - 1; 613d14c5d2SYehuda Sadeh pi->lpgp_num_mask = 623d14c5d2SYehuda Sadeh (1 << calc_bits_of(le32_to_cpu(pi->v.lpgp_num)-1)) - 1; 633d14c5d2SYehuda Sadeh } 643d14c5d2SYehuda Sadeh 653d14c5d2SYehuda Sadeh /* 663d14c5d2SYehuda Sadeh * decode crush map 673d14c5d2SYehuda Sadeh */ 683d14c5d2SYehuda Sadeh static int crush_decode_uniform_bucket(void **p, void *end, 693d14c5d2SYehuda Sadeh struct crush_bucket_uniform *b) 703d14c5d2SYehuda Sadeh { 713d14c5d2SYehuda Sadeh dout("crush_decode_uniform_bucket %p to %p\n", *p, end); 723d14c5d2SYehuda Sadeh ceph_decode_need(p, end, (1+b->h.size) * sizeof(u32), bad); 733d14c5d2SYehuda Sadeh b->item_weight = ceph_decode_32(p); 743d14c5d2SYehuda Sadeh return 0; 753d14c5d2SYehuda Sadeh bad: 763d14c5d2SYehuda Sadeh return -EINVAL; 773d14c5d2SYehuda Sadeh } 783d14c5d2SYehuda Sadeh 793d14c5d2SYehuda Sadeh static int crush_decode_list_bucket(void **p, void *end, 803d14c5d2SYehuda Sadeh struct crush_bucket_list *b) 813d14c5d2SYehuda Sadeh { 823d14c5d2SYehuda Sadeh int j; 833d14c5d2SYehuda Sadeh dout("crush_decode_list_bucket %p to %p\n", *p, end); 843d14c5d2SYehuda Sadeh b->item_weights = kcalloc(b->h.size, sizeof(u32), GFP_NOFS); 853d14c5d2SYehuda Sadeh if (b->item_weights == NULL) 863d14c5d2SYehuda Sadeh return -ENOMEM; 873d14c5d2SYehuda Sadeh b->sum_weights = kcalloc(b->h.size, sizeof(u32), GFP_NOFS); 883d14c5d2SYehuda Sadeh if (b->sum_weights == NULL) 893d14c5d2SYehuda Sadeh return -ENOMEM; 903d14c5d2SYehuda Sadeh ceph_decode_need(p, end, 2 * b->h.size * sizeof(u32), bad); 913d14c5d2SYehuda Sadeh for (j = 0; j < b->h.size; j++) { 923d14c5d2SYehuda Sadeh b->item_weights[j] = ceph_decode_32(p); 933d14c5d2SYehuda Sadeh b->sum_weights[j] = ceph_decode_32(p); 943d14c5d2SYehuda Sadeh } 953d14c5d2SYehuda Sadeh return 0; 963d14c5d2SYehuda Sadeh bad: 973d14c5d2SYehuda Sadeh return -EINVAL; 983d14c5d2SYehuda Sadeh } 993d14c5d2SYehuda Sadeh 1003d14c5d2SYehuda Sadeh static int crush_decode_tree_bucket(void **p, void *end, 1013d14c5d2SYehuda Sadeh struct crush_bucket_tree *b) 1023d14c5d2SYehuda Sadeh { 1033d14c5d2SYehuda Sadeh int j; 1043d14c5d2SYehuda Sadeh dout("crush_decode_tree_bucket %p to %p\n", *p, end); 1053d14c5d2SYehuda Sadeh ceph_decode_32_safe(p, end, b->num_nodes, bad); 1063d14c5d2SYehuda Sadeh b->node_weights = kcalloc(b->num_nodes, sizeof(u32), GFP_NOFS); 1073d14c5d2SYehuda Sadeh if (b->node_weights == NULL) 1083d14c5d2SYehuda Sadeh return -ENOMEM; 1093d14c5d2SYehuda Sadeh ceph_decode_need(p, end, b->num_nodes * sizeof(u32), bad); 1103d14c5d2SYehuda Sadeh for (j = 0; j < b->num_nodes; j++) 1113d14c5d2SYehuda Sadeh b->node_weights[j] = ceph_decode_32(p); 1123d14c5d2SYehuda Sadeh return 0; 1133d14c5d2SYehuda Sadeh bad: 1143d14c5d2SYehuda Sadeh return -EINVAL; 1153d14c5d2SYehuda Sadeh } 1163d14c5d2SYehuda Sadeh 1173d14c5d2SYehuda Sadeh static int crush_decode_straw_bucket(void **p, void *end, 1183d14c5d2SYehuda Sadeh struct crush_bucket_straw *b) 1193d14c5d2SYehuda Sadeh { 1203d14c5d2SYehuda Sadeh int j; 1213d14c5d2SYehuda Sadeh dout("crush_decode_straw_bucket %p to %p\n", *p, end); 1223d14c5d2SYehuda Sadeh b->item_weights = kcalloc(b->h.size, sizeof(u32), GFP_NOFS); 1233d14c5d2SYehuda Sadeh if (b->item_weights == NULL) 1243d14c5d2SYehuda Sadeh return -ENOMEM; 1253d14c5d2SYehuda Sadeh b->straws = kcalloc(b->h.size, sizeof(u32), GFP_NOFS); 1263d14c5d2SYehuda Sadeh if (b->straws == NULL) 1273d14c5d2SYehuda Sadeh return -ENOMEM; 1283d14c5d2SYehuda Sadeh ceph_decode_need(p, end, 2 * b->h.size * sizeof(u32), bad); 1293d14c5d2SYehuda Sadeh for (j = 0; j < b->h.size; j++) { 1303d14c5d2SYehuda Sadeh b->item_weights[j] = ceph_decode_32(p); 1313d14c5d2SYehuda Sadeh b->straws[j] = ceph_decode_32(p); 1323d14c5d2SYehuda Sadeh } 1333d14c5d2SYehuda Sadeh return 0; 1343d14c5d2SYehuda Sadeh bad: 1353d14c5d2SYehuda Sadeh return -EINVAL; 1363d14c5d2SYehuda Sadeh } 1373d14c5d2SYehuda Sadeh 138546f04efSSage Weil static int skip_name_map(void **p, void *end) 139546f04efSSage Weil { 140546f04efSSage Weil int len; 141546f04efSSage Weil ceph_decode_32_safe(p, end, len ,bad); 142546f04efSSage Weil while (len--) { 143546f04efSSage Weil int strlen; 144546f04efSSage Weil *p += sizeof(u32); 145546f04efSSage Weil ceph_decode_32_safe(p, end, strlen, bad); 146546f04efSSage Weil *p += strlen; 147546f04efSSage Weil } 148546f04efSSage Weil return 0; 149546f04efSSage Weil bad: 150546f04efSSage Weil return -EINVAL; 151546f04efSSage Weil } 152546f04efSSage Weil 1533d14c5d2SYehuda Sadeh static struct crush_map *crush_decode(void *pbyval, void *end) 1543d14c5d2SYehuda Sadeh { 1553d14c5d2SYehuda Sadeh struct crush_map *c; 1563d14c5d2SYehuda Sadeh int err = -EINVAL; 1573d14c5d2SYehuda Sadeh int i, j; 1583d14c5d2SYehuda Sadeh void **p = &pbyval; 1593d14c5d2SYehuda Sadeh void *start = pbyval; 1603d14c5d2SYehuda Sadeh u32 magic; 161546f04efSSage Weil u32 num_name_maps; 1623d14c5d2SYehuda Sadeh 1633d14c5d2SYehuda Sadeh dout("crush_decode %p to %p len %d\n", *p, end, (int)(end - *p)); 1643d14c5d2SYehuda Sadeh 1653d14c5d2SYehuda Sadeh c = kzalloc(sizeof(*c), GFP_NOFS); 1663d14c5d2SYehuda Sadeh if (c == NULL) 1673d14c5d2SYehuda Sadeh return ERR_PTR(-ENOMEM); 1683d14c5d2SYehuda Sadeh 169546f04efSSage Weil /* set tunables to default values */ 170546f04efSSage Weil c->choose_local_tries = 2; 171546f04efSSage Weil c->choose_local_fallback_tries = 5; 172546f04efSSage Weil c->choose_total_tries = 19; 1731604f488SJim Schutt c->chooseleaf_descend_once = 0; 174546f04efSSage Weil 1753d14c5d2SYehuda Sadeh ceph_decode_need(p, end, 4*sizeof(u32), bad); 1763d14c5d2SYehuda Sadeh magic = ceph_decode_32(p); 1773d14c5d2SYehuda Sadeh if (magic != CRUSH_MAGIC) { 1783d14c5d2SYehuda Sadeh pr_err("crush_decode magic %x != current %x\n", 17995c96174SEric Dumazet (unsigned int)magic, (unsigned int)CRUSH_MAGIC); 1803d14c5d2SYehuda Sadeh goto bad; 1813d14c5d2SYehuda Sadeh } 1823d14c5d2SYehuda Sadeh c->max_buckets = ceph_decode_32(p); 1833d14c5d2SYehuda Sadeh c->max_rules = ceph_decode_32(p); 1843d14c5d2SYehuda Sadeh c->max_devices = ceph_decode_32(p); 1853d14c5d2SYehuda Sadeh 1863d14c5d2SYehuda Sadeh c->buckets = kcalloc(c->max_buckets, sizeof(*c->buckets), GFP_NOFS); 1873d14c5d2SYehuda Sadeh if (c->buckets == NULL) 1883d14c5d2SYehuda Sadeh goto badmem; 1893d14c5d2SYehuda Sadeh c->rules = kcalloc(c->max_rules, sizeof(*c->rules), GFP_NOFS); 1903d14c5d2SYehuda Sadeh if (c->rules == NULL) 1913d14c5d2SYehuda Sadeh goto badmem; 1923d14c5d2SYehuda Sadeh 1933d14c5d2SYehuda Sadeh /* buckets */ 1943d14c5d2SYehuda Sadeh for (i = 0; i < c->max_buckets; i++) { 1953d14c5d2SYehuda Sadeh int size = 0; 1963d14c5d2SYehuda Sadeh u32 alg; 1973d14c5d2SYehuda Sadeh struct crush_bucket *b; 1983d14c5d2SYehuda Sadeh 1993d14c5d2SYehuda Sadeh ceph_decode_32_safe(p, end, alg, bad); 2003d14c5d2SYehuda Sadeh if (alg == 0) { 2013d14c5d2SYehuda Sadeh c->buckets[i] = NULL; 2023d14c5d2SYehuda Sadeh continue; 2033d14c5d2SYehuda Sadeh } 2043d14c5d2SYehuda Sadeh dout("crush_decode bucket %d off %x %p to %p\n", 2053d14c5d2SYehuda Sadeh i, (int)(*p-start), *p, end); 2063d14c5d2SYehuda Sadeh 2073d14c5d2SYehuda Sadeh switch (alg) { 2083d14c5d2SYehuda Sadeh case CRUSH_BUCKET_UNIFORM: 2093d14c5d2SYehuda Sadeh size = sizeof(struct crush_bucket_uniform); 2103d14c5d2SYehuda Sadeh break; 2113d14c5d2SYehuda Sadeh case CRUSH_BUCKET_LIST: 2123d14c5d2SYehuda Sadeh size = sizeof(struct crush_bucket_list); 2133d14c5d2SYehuda Sadeh break; 2143d14c5d2SYehuda Sadeh case CRUSH_BUCKET_TREE: 2153d14c5d2SYehuda Sadeh size = sizeof(struct crush_bucket_tree); 2163d14c5d2SYehuda Sadeh break; 2173d14c5d2SYehuda Sadeh case CRUSH_BUCKET_STRAW: 2183d14c5d2SYehuda Sadeh size = sizeof(struct crush_bucket_straw); 2193d14c5d2SYehuda Sadeh break; 2203d14c5d2SYehuda Sadeh default: 2213d14c5d2SYehuda Sadeh err = -EINVAL; 2223d14c5d2SYehuda Sadeh goto bad; 2233d14c5d2SYehuda Sadeh } 2243d14c5d2SYehuda Sadeh BUG_ON(size == 0); 2253d14c5d2SYehuda Sadeh b = c->buckets[i] = kzalloc(size, GFP_NOFS); 2263d14c5d2SYehuda Sadeh if (b == NULL) 2273d14c5d2SYehuda Sadeh goto badmem; 2283d14c5d2SYehuda Sadeh 2293d14c5d2SYehuda Sadeh ceph_decode_need(p, end, 4*sizeof(u32), bad); 2303d14c5d2SYehuda Sadeh b->id = ceph_decode_32(p); 2313d14c5d2SYehuda Sadeh b->type = ceph_decode_16(p); 2323d14c5d2SYehuda Sadeh b->alg = ceph_decode_8(p); 2333d14c5d2SYehuda Sadeh b->hash = ceph_decode_8(p); 2343d14c5d2SYehuda Sadeh b->weight = ceph_decode_32(p); 2353d14c5d2SYehuda Sadeh b->size = ceph_decode_32(p); 2363d14c5d2SYehuda Sadeh 2373d14c5d2SYehuda Sadeh dout("crush_decode bucket size %d off %x %p to %p\n", 2383d14c5d2SYehuda Sadeh b->size, (int)(*p-start), *p, end); 2393d14c5d2SYehuda Sadeh 2403d14c5d2SYehuda Sadeh b->items = kcalloc(b->size, sizeof(__s32), GFP_NOFS); 2413d14c5d2SYehuda Sadeh if (b->items == NULL) 2423d14c5d2SYehuda Sadeh goto badmem; 2433d14c5d2SYehuda Sadeh b->perm = kcalloc(b->size, sizeof(u32), GFP_NOFS); 2443d14c5d2SYehuda Sadeh if (b->perm == NULL) 2453d14c5d2SYehuda Sadeh goto badmem; 2463d14c5d2SYehuda Sadeh b->perm_n = 0; 2473d14c5d2SYehuda Sadeh 2483d14c5d2SYehuda Sadeh ceph_decode_need(p, end, b->size*sizeof(u32), bad); 2493d14c5d2SYehuda Sadeh for (j = 0; j < b->size; j++) 2503d14c5d2SYehuda Sadeh b->items[j] = ceph_decode_32(p); 2513d14c5d2SYehuda Sadeh 2523d14c5d2SYehuda Sadeh switch (b->alg) { 2533d14c5d2SYehuda Sadeh case CRUSH_BUCKET_UNIFORM: 2543d14c5d2SYehuda Sadeh err = crush_decode_uniform_bucket(p, end, 2553d14c5d2SYehuda Sadeh (struct crush_bucket_uniform *)b); 2563d14c5d2SYehuda Sadeh if (err < 0) 2573d14c5d2SYehuda Sadeh goto bad; 2583d14c5d2SYehuda Sadeh break; 2593d14c5d2SYehuda Sadeh case CRUSH_BUCKET_LIST: 2603d14c5d2SYehuda Sadeh err = crush_decode_list_bucket(p, end, 2613d14c5d2SYehuda Sadeh (struct crush_bucket_list *)b); 2623d14c5d2SYehuda Sadeh if (err < 0) 2633d14c5d2SYehuda Sadeh goto bad; 2643d14c5d2SYehuda Sadeh break; 2653d14c5d2SYehuda Sadeh case CRUSH_BUCKET_TREE: 2663d14c5d2SYehuda Sadeh err = crush_decode_tree_bucket(p, end, 2673d14c5d2SYehuda Sadeh (struct crush_bucket_tree *)b); 2683d14c5d2SYehuda Sadeh if (err < 0) 2693d14c5d2SYehuda Sadeh goto bad; 2703d14c5d2SYehuda Sadeh break; 2713d14c5d2SYehuda Sadeh case CRUSH_BUCKET_STRAW: 2723d14c5d2SYehuda Sadeh err = crush_decode_straw_bucket(p, end, 2733d14c5d2SYehuda Sadeh (struct crush_bucket_straw *)b); 2743d14c5d2SYehuda Sadeh if (err < 0) 2753d14c5d2SYehuda Sadeh goto bad; 2763d14c5d2SYehuda Sadeh break; 2773d14c5d2SYehuda Sadeh } 2783d14c5d2SYehuda Sadeh } 2793d14c5d2SYehuda Sadeh 2803d14c5d2SYehuda Sadeh /* rules */ 2813d14c5d2SYehuda Sadeh dout("rule vec is %p\n", c->rules); 2823d14c5d2SYehuda Sadeh for (i = 0; i < c->max_rules; i++) { 2833d14c5d2SYehuda Sadeh u32 yes; 2843d14c5d2SYehuda Sadeh struct crush_rule *r; 2853d14c5d2SYehuda Sadeh 2863d14c5d2SYehuda Sadeh ceph_decode_32_safe(p, end, yes, bad); 2873d14c5d2SYehuda Sadeh if (!yes) { 2883d14c5d2SYehuda Sadeh dout("crush_decode NO rule %d off %x %p to %p\n", 2893d14c5d2SYehuda Sadeh i, (int)(*p-start), *p, end); 2903d14c5d2SYehuda Sadeh c->rules[i] = NULL; 2913d14c5d2SYehuda Sadeh continue; 2923d14c5d2SYehuda Sadeh } 2933d14c5d2SYehuda Sadeh 2943d14c5d2SYehuda Sadeh dout("crush_decode rule %d off %x %p to %p\n", 2953d14c5d2SYehuda Sadeh i, (int)(*p-start), *p, end); 2963d14c5d2SYehuda Sadeh 2973d14c5d2SYehuda Sadeh /* len */ 2983d14c5d2SYehuda Sadeh ceph_decode_32_safe(p, end, yes, bad); 2993d14c5d2SYehuda Sadeh #if BITS_PER_LONG == 32 3003d14c5d2SYehuda Sadeh err = -EINVAL; 30164486697SXi Wang if (yes > (ULONG_MAX - sizeof(*r)) 30264486697SXi Wang / sizeof(struct crush_rule_step)) 3033d14c5d2SYehuda Sadeh goto bad; 3043d14c5d2SYehuda Sadeh #endif 3053d14c5d2SYehuda Sadeh r = c->rules[i] = kmalloc(sizeof(*r) + 3063d14c5d2SYehuda Sadeh yes*sizeof(struct crush_rule_step), 3073d14c5d2SYehuda Sadeh GFP_NOFS); 3083d14c5d2SYehuda Sadeh if (r == NULL) 3093d14c5d2SYehuda Sadeh goto badmem; 3103d14c5d2SYehuda Sadeh dout(" rule %d is at %p\n", i, r); 3113d14c5d2SYehuda Sadeh r->len = yes; 3123d14c5d2SYehuda Sadeh ceph_decode_copy_safe(p, end, &r->mask, 4, bad); /* 4 u8's */ 3133d14c5d2SYehuda Sadeh ceph_decode_need(p, end, r->len*3*sizeof(u32), bad); 3143d14c5d2SYehuda Sadeh for (j = 0; j < r->len; j++) { 3153d14c5d2SYehuda Sadeh r->steps[j].op = ceph_decode_32(p); 3163d14c5d2SYehuda Sadeh r->steps[j].arg1 = ceph_decode_32(p); 3173d14c5d2SYehuda Sadeh r->steps[j].arg2 = ceph_decode_32(p); 3183d14c5d2SYehuda Sadeh } 3193d14c5d2SYehuda Sadeh } 3203d14c5d2SYehuda Sadeh 3213d14c5d2SYehuda Sadeh /* ignore trailing name maps. */ 322546f04efSSage Weil for (num_name_maps = 0; num_name_maps < 3; num_name_maps++) { 323546f04efSSage Weil err = skip_name_map(p, end); 324546f04efSSage Weil if (err < 0) 325546f04efSSage Weil goto done; 326546f04efSSage Weil } 3273d14c5d2SYehuda Sadeh 328546f04efSSage Weil /* tunables */ 329546f04efSSage Weil ceph_decode_need(p, end, 3*sizeof(u32), done); 330546f04efSSage Weil c->choose_local_tries = ceph_decode_32(p); 331546f04efSSage Weil c->choose_local_fallback_tries = ceph_decode_32(p); 332546f04efSSage Weil c->choose_total_tries = ceph_decode_32(p); 333546f04efSSage Weil dout("crush decode tunable choose_local_tries = %d", 334546f04efSSage Weil c->choose_local_tries); 335546f04efSSage Weil dout("crush decode tunable choose_local_fallback_tries = %d", 336546f04efSSage Weil c->choose_local_fallback_tries); 337546f04efSSage Weil dout("crush decode tunable choose_total_tries = %d", 338546f04efSSage Weil c->choose_total_tries); 339546f04efSSage Weil 3401604f488SJim Schutt ceph_decode_need(p, end, sizeof(u32), done); 3411604f488SJim Schutt c->chooseleaf_descend_once = ceph_decode_32(p); 3421604f488SJim Schutt dout("crush decode tunable chooseleaf_descend_once = %d", 3431604f488SJim Schutt c->chooseleaf_descend_once); 3441604f488SJim Schutt 345546f04efSSage Weil done: 3463d14c5d2SYehuda Sadeh dout("crush_decode success\n"); 3473d14c5d2SYehuda Sadeh return c; 3483d14c5d2SYehuda Sadeh 3493d14c5d2SYehuda Sadeh badmem: 3503d14c5d2SYehuda Sadeh err = -ENOMEM; 3513d14c5d2SYehuda Sadeh bad: 3523d14c5d2SYehuda Sadeh dout("crush_decode fail %d\n", err); 3533d14c5d2SYehuda Sadeh crush_destroy(c); 3543d14c5d2SYehuda Sadeh return ERR_PTR(err); 3553d14c5d2SYehuda Sadeh } 3563d14c5d2SYehuda Sadeh 3573d14c5d2SYehuda Sadeh /* 3583d14c5d2SYehuda Sadeh * rbtree of pg_mapping for handling pg_temp (explicit mapping of pgid 3593d14c5d2SYehuda Sadeh * to a set of osds) 3603d14c5d2SYehuda Sadeh */ 3613d14c5d2SYehuda Sadeh static int pgid_cmp(struct ceph_pg l, struct ceph_pg r) 3623d14c5d2SYehuda Sadeh { 3633d14c5d2SYehuda Sadeh u64 a = *(u64 *)&l; 3643d14c5d2SYehuda Sadeh u64 b = *(u64 *)&r; 3653d14c5d2SYehuda Sadeh 3663d14c5d2SYehuda Sadeh if (a < b) 3673d14c5d2SYehuda Sadeh return -1; 3683d14c5d2SYehuda Sadeh if (a > b) 3693d14c5d2SYehuda Sadeh return 1; 3703d14c5d2SYehuda Sadeh return 0; 3713d14c5d2SYehuda Sadeh } 3723d14c5d2SYehuda Sadeh 3733d14c5d2SYehuda Sadeh static int __insert_pg_mapping(struct ceph_pg_mapping *new, 3743d14c5d2SYehuda Sadeh struct rb_root *root) 3753d14c5d2SYehuda Sadeh { 3763d14c5d2SYehuda Sadeh struct rb_node **p = &root->rb_node; 3773d14c5d2SYehuda Sadeh struct rb_node *parent = NULL; 3783d14c5d2SYehuda Sadeh struct ceph_pg_mapping *pg = NULL; 3793d14c5d2SYehuda Sadeh int c; 3803d14c5d2SYehuda Sadeh 3818adc8b3dSSage Weil dout("__insert_pg_mapping %llx %p\n", *(u64 *)&new->pgid, new); 3823d14c5d2SYehuda Sadeh while (*p) { 3833d14c5d2SYehuda Sadeh parent = *p; 3843d14c5d2SYehuda Sadeh pg = rb_entry(parent, struct ceph_pg_mapping, node); 3853d14c5d2SYehuda Sadeh c = pgid_cmp(new->pgid, pg->pgid); 3863d14c5d2SYehuda Sadeh if (c < 0) 3873d14c5d2SYehuda Sadeh p = &(*p)->rb_left; 3883d14c5d2SYehuda Sadeh else if (c > 0) 3893d14c5d2SYehuda Sadeh p = &(*p)->rb_right; 3903d14c5d2SYehuda Sadeh else 3913d14c5d2SYehuda Sadeh return -EEXIST; 3923d14c5d2SYehuda Sadeh } 3933d14c5d2SYehuda Sadeh 3943d14c5d2SYehuda Sadeh rb_link_node(&new->node, parent, p); 3953d14c5d2SYehuda Sadeh rb_insert_color(&new->node, root); 3963d14c5d2SYehuda Sadeh return 0; 3973d14c5d2SYehuda Sadeh } 3983d14c5d2SYehuda Sadeh 3993d14c5d2SYehuda Sadeh static struct ceph_pg_mapping *__lookup_pg_mapping(struct rb_root *root, 4003d14c5d2SYehuda Sadeh struct ceph_pg pgid) 4013d14c5d2SYehuda Sadeh { 4023d14c5d2SYehuda Sadeh struct rb_node *n = root->rb_node; 4033d14c5d2SYehuda Sadeh struct ceph_pg_mapping *pg; 4043d14c5d2SYehuda Sadeh int c; 4053d14c5d2SYehuda Sadeh 4063d14c5d2SYehuda Sadeh while (n) { 4073d14c5d2SYehuda Sadeh pg = rb_entry(n, struct ceph_pg_mapping, node); 4083d14c5d2SYehuda Sadeh c = pgid_cmp(pgid, pg->pgid); 4098adc8b3dSSage Weil if (c < 0) { 4103d14c5d2SYehuda Sadeh n = n->rb_left; 4118adc8b3dSSage Weil } else if (c > 0) { 4123d14c5d2SYehuda Sadeh n = n->rb_right; 4138adc8b3dSSage Weil } else { 4148adc8b3dSSage Weil dout("__lookup_pg_mapping %llx got %p\n", 4158adc8b3dSSage Weil *(u64 *)&pgid, pg); 4163d14c5d2SYehuda Sadeh return pg; 4173d14c5d2SYehuda Sadeh } 4188adc8b3dSSage Weil } 4193d14c5d2SYehuda Sadeh return NULL; 4203d14c5d2SYehuda Sadeh } 4213d14c5d2SYehuda Sadeh 4228adc8b3dSSage Weil static int __remove_pg_mapping(struct rb_root *root, struct ceph_pg pgid) 4238adc8b3dSSage Weil { 4248adc8b3dSSage Weil struct ceph_pg_mapping *pg = __lookup_pg_mapping(root, pgid); 4258adc8b3dSSage Weil 4268adc8b3dSSage Weil if (pg) { 4278adc8b3dSSage Weil dout("__remove_pg_mapping %llx %p\n", *(u64 *)&pgid, pg); 4288adc8b3dSSage Weil rb_erase(&pg->node, root); 4298adc8b3dSSage Weil kfree(pg); 4308adc8b3dSSage Weil return 0; 4318adc8b3dSSage Weil } 4328adc8b3dSSage Weil dout("__remove_pg_mapping %llx dne\n", *(u64 *)&pgid); 4338adc8b3dSSage Weil return -ENOENT; 4348adc8b3dSSage Weil } 4358adc8b3dSSage Weil 4363d14c5d2SYehuda Sadeh /* 4373d14c5d2SYehuda Sadeh * rbtree of pg pool info 4383d14c5d2SYehuda Sadeh */ 4393d14c5d2SYehuda Sadeh static int __insert_pg_pool(struct rb_root *root, struct ceph_pg_pool_info *new) 4403d14c5d2SYehuda Sadeh { 4413d14c5d2SYehuda Sadeh struct rb_node **p = &root->rb_node; 4423d14c5d2SYehuda Sadeh struct rb_node *parent = NULL; 4433d14c5d2SYehuda Sadeh struct ceph_pg_pool_info *pi = NULL; 4443d14c5d2SYehuda Sadeh 4453d14c5d2SYehuda Sadeh while (*p) { 4463d14c5d2SYehuda Sadeh parent = *p; 4473d14c5d2SYehuda Sadeh pi = rb_entry(parent, struct ceph_pg_pool_info, node); 4483d14c5d2SYehuda Sadeh if (new->id < pi->id) 4493d14c5d2SYehuda Sadeh p = &(*p)->rb_left; 4503d14c5d2SYehuda Sadeh else if (new->id > pi->id) 4513d14c5d2SYehuda Sadeh p = &(*p)->rb_right; 4523d14c5d2SYehuda Sadeh else 4533d14c5d2SYehuda Sadeh return -EEXIST; 4543d14c5d2SYehuda Sadeh } 4553d14c5d2SYehuda Sadeh 4563d14c5d2SYehuda Sadeh rb_link_node(&new->node, parent, p); 4573d14c5d2SYehuda Sadeh rb_insert_color(&new->node, root); 4583d14c5d2SYehuda Sadeh return 0; 4593d14c5d2SYehuda Sadeh } 4603d14c5d2SYehuda Sadeh 4613d14c5d2SYehuda Sadeh static struct ceph_pg_pool_info *__lookup_pg_pool(struct rb_root *root, int id) 4623d14c5d2SYehuda Sadeh { 4633d14c5d2SYehuda Sadeh struct ceph_pg_pool_info *pi; 4643d14c5d2SYehuda Sadeh struct rb_node *n = root->rb_node; 4653d14c5d2SYehuda Sadeh 4663d14c5d2SYehuda Sadeh while (n) { 4673d14c5d2SYehuda Sadeh pi = rb_entry(n, struct ceph_pg_pool_info, node); 4683d14c5d2SYehuda Sadeh if (id < pi->id) 4693d14c5d2SYehuda Sadeh n = n->rb_left; 4703d14c5d2SYehuda Sadeh else if (id > pi->id) 4713d14c5d2SYehuda Sadeh n = n->rb_right; 4723d14c5d2SYehuda Sadeh else 4733d14c5d2SYehuda Sadeh return pi; 4743d14c5d2SYehuda Sadeh } 4753d14c5d2SYehuda Sadeh return NULL; 4763d14c5d2SYehuda Sadeh } 4773d14c5d2SYehuda Sadeh 47872afc71fSAlex Elder const char *ceph_pg_pool_name_by_id(struct ceph_osdmap *map, u64 id) 47972afc71fSAlex Elder { 48072afc71fSAlex Elder struct ceph_pg_pool_info *pi; 48172afc71fSAlex Elder 48272afc71fSAlex Elder if (id == CEPH_NOPOOL) 48372afc71fSAlex Elder return NULL; 48472afc71fSAlex Elder 48572afc71fSAlex Elder if (WARN_ON_ONCE(id > (u64) INT_MAX)) 48672afc71fSAlex Elder return NULL; 48772afc71fSAlex Elder 48872afc71fSAlex Elder pi = __lookup_pg_pool(&map->pg_pools, (int) id); 48972afc71fSAlex Elder 49072afc71fSAlex Elder return pi ? pi->name : NULL; 49172afc71fSAlex Elder } 49272afc71fSAlex Elder EXPORT_SYMBOL(ceph_pg_pool_name_by_id); 49372afc71fSAlex Elder 4943d14c5d2SYehuda Sadeh int ceph_pg_poolid_by_name(struct ceph_osdmap *map, const char *name) 4953d14c5d2SYehuda Sadeh { 4963d14c5d2SYehuda Sadeh struct rb_node *rbp; 4973d14c5d2SYehuda Sadeh 4983d14c5d2SYehuda Sadeh for (rbp = rb_first(&map->pg_pools); rbp; rbp = rb_next(rbp)) { 4993d14c5d2SYehuda Sadeh struct ceph_pg_pool_info *pi = 5003d14c5d2SYehuda Sadeh rb_entry(rbp, struct ceph_pg_pool_info, node); 5013d14c5d2SYehuda Sadeh if (pi->name && strcmp(pi->name, name) == 0) 5023d14c5d2SYehuda Sadeh return pi->id; 5033d14c5d2SYehuda Sadeh } 5043d14c5d2SYehuda Sadeh return -ENOENT; 5053d14c5d2SYehuda Sadeh } 5063d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_pg_poolid_by_name); 5073d14c5d2SYehuda Sadeh 5083d14c5d2SYehuda Sadeh static void __remove_pg_pool(struct rb_root *root, struct ceph_pg_pool_info *pi) 5093d14c5d2SYehuda Sadeh { 5103d14c5d2SYehuda Sadeh rb_erase(&pi->node, root); 5113d14c5d2SYehuda Sadeh kfree(pi->name); 5123d14c5d2SYehuda Sadeh kfree(pi); 5133d14c5d2SYehuda Sadeh } 5143d14c5d2SYehuda Sadeh 5153d14c5d2SYehuda Sadeh static int __decode_pool(void **p, void *end, struct ceph_pg_pool_info *pi) 5163d14c5d2SYehuda Sadeh { 51795c96174SEric Dumazet unsigned int n, m; 5183d14c5d2SYehuda Sadeh 5193d14c5d2SYehuda Sadeh ceph_decode_copy(p, &pi->v, sizeof(pi->v)); 5203d14c5d2SYehuda Sadeh calc_pg_masks(pi); 5213d14c5d2SYehuda Sadeh 5223d14c5d2SYehuda Sadeh /* num_snaps * snap_info_t */ 5233d14c5d2SYehuda Sadeh n = le32_to_cpu(pi->v.num_snaps); 5243d14c5d2SYehuda Sadeh while (n--) { 5253d14c5d2SYehuda Sadeh ceph_decode_need(p, end, sizeof(u64) + 1 + sizeof(u64) + 5263d14c5d2SYehuda Sadeh sizeof(struct ceph_timespec), bad); 5273d14c5d2SYehuda Sadeh *p += sizeof(u64) + /* key */ 5283d14c5d2SYehuda Sadeh 1 + sizeof(u64) + /* u8, snapid */ 5293d14c5d2SYehuda Sadeh sizeof(struct ceph_timespec); 5303d14c5d2SYehuda Sadeh m = ceph_decode_32(p); /* snap name */ 5313d14c5d2SYehuda Sadeh *p += m; 5323d14c5d2SYehuda Sadeh } 5333d14c5d2SYehuda Sadeh 5343d14c5d2SYehuda Sadeh *p += le32_to_cpu(pi->v.num_removed_snap_intervals) * sizeof(u64) * 2; 5353d14c5d2SYehuda Sadeh return 0; 5363d14c5d2SYehuda Sadeh 5373d14c5d2SYehuda Sadeh bad: 5383d14c5d2SYehuda Sadeh return -EINVAL; 5393d14c5d2SYehuda Sadeh } 5403d14c5d2SYehuda Sadeh 5413d14c5d2SYehuda Sadeh static int __decode_pool_names(void **p, void *end, struct ceph_osdmap *map) 5423d14c5d2SYehuda Sadeh { 5433d14c5d2SYehuda Sadeh struct ceph_pg_pool_info *pi; 5443d14c5d2SYehuda Sadeh u32 num, len, pool; 5453d14c5d2SYehuda Sadeh 5463d14c5d2SYehuda Sadeh ceph_decode_32_safe(p, end, num, bad); 5473d14c5d2SYehuda Sadeh dout(" %d pool names\n", num); 5483d14c5d2SYehuda Sadeh while (num--) { 5493d14c5d2SYehuda Sadeh ceph_decode_32_safe(p, end, pool, bad); 5503d14c5d2SYehuda Sadeh ceph_decode_32_safe(p, end, len, bad); 5513d14c5d2SYehuda Sadeh dout(" pool %d len %d\n", pool, len); 552ad3b904cSXi Wang ceph_decode_need(p, end, len, bad); 5533d14c5d2SYehuda Sadeh pi = __lookup_pg_pool(&map->pg_pools, pool); 5543d14c5d2SYehuda Sadeh if (pi) { 555ad3b904cSXi Wang char *name = kstrndup(*p, len, GFP_NOFS); 556ad3b904cSXi Wang 557ad3b904cSXi Wang if (!name) 558ad3b904cSXi Wang return -ENOMEM; 5593d14c5d2SYehuda Sadeh kfree(pi->name); 560ad3b904cSXi Wang pi->name = name; 5613d14c5d2SYehuda Sadeh dout(" name is %s\n", pi->name); 5623d14c5d2SYehuda Sadeh } 5633d14c5d2SYehuda Sadeh *p += len; 5643d14c5d2SYehuda Sadeh } 5653d14c5d2SYehuda Sadeh return 0; 5663d14c5d2SYehuda Sadeh 5673d14c5d2SYehuda Sadeh bad: 5683d14c5d2SYehuda Sadeh return -EINVAL; 5693d14c5d2SYehuda Sadeh } 5703d14c5d2SYehuda Sadeh 5713d14c5d2SYehuda Sadeh /* 5723d14c5d2SYehuda Sadeh * osd map 5733d14c5d2SYehuda Sadeh */ 5743d14c5d2SYehuda Sadeh void ceph_osdmap_destroy(struct ceph_osdmap *map) 5753d14c5d2SYehuda Sadeh { 5763d14c5d2SYehuda Sadeh dout("osdmap_destroy %p\n", map); 5773d14c5d2SYehuda Sadeh if (map->crush) 5783d14c5d2SYehuda Sadeh crush_destroy(map->crush); 5793d14c5d2SYehuda Sadeh while (!RB_EMPTY_ROOT(&map->pg_temp)) { 5803d14c5d2SYehuda Sadeh struct ceph_pg_mapping *pg = 5813d14c5d2SYehuda Sadeh rb_entry(rb_first(&map->pg_temp), 5823d14c5d2SYehuda Sadeh struct ceph_pg_mapping, node); 5833d14c5d2SYehuda Sadeh rb_erase(&pg->node, &map->pg_temp); 5843d14c5d2SYehuda Sadeh kfree(pg); 5853d14c5d2SYehuda Sadeh } 5863d14c5d2SYehuda Sadeh while (!RB_EMPTY_ROOT(&map->pg_pools)) { 5873d14c5d2SYehuda Sadeh struct ceph_pg_pool_info *pi = 5883d14c5d2SYehuda Sadeh rb_entry(rb_first(&map->pg_pools), 5893d14c5d2SYehuda Sadeh struct ceph_pg_pool_info, node); 5903d14c5d2SYehuda Sadeh __remove_pg_pool(&map->pg_pools, pi); 5913d14c5d2SYehuda Sadeh } 5923d14c5d2SYehuda Sadeh kfree(map->osd_state); 5933d14c5d2SYehuda Sadeh kfree(map->osd_weight); 5943d14c5d2SYehuda Sadeh kfree(map->osd_addr); 5953d14c5d2SYehuda Sadeh kfree(map); 5963d14c5d2SYehuda Sadeh } 5973d14c5d2SYehuda Sadeh 5983d14c5d2SYehuda Sadeh /* 5993d14c5d2SYehuda Sadeh * adjust max osd value. reallocate arrays. 6003d14c5d2SYehuda Sadeh */ 6013d14c5d2SYehuda Sadeh static int osdmap_set_max_osd(struct ceph_osdmap *map, int max) 6023d14c5d2SYehuda Sadeh { 6033d14c5d2SYehuda Sadeh u8 *state; 6043d14c5d2SYehuda Sadeh struct ceph_entity_addr *addr; 6053d14c5d2SYehuda Sadeh u32 *weight; 6063d14c5d2SYehuda Sadeh 6073d14c5d2SYehuda Sadeh state = kcalloc(max, sizeof(*state), GFP_NOFS); 6083d14c5d2SYehuda Sadeh addr = kcalloc(max, sizeof(*addr), GFP_NOFS); 6093d14c5d2SYehuda Sadeh weight = kcalloc(max, sizeof(*weight), GFP_NOFS); 6103d14c5d2SYehuda Sadeh if (state == NULL || addr == NULL || weight == NULL) { 6113d14c5d2SYehuda Sadeh kfree(state); 6123d14c5d2SYehuda Sadeh kfree(addr); 6133d14c5d2SYehuda Sadeh kfree(weight); 6143d14c5d2SYehuda Sadeh return -ENOMEM; 6153d14c5d2SYehuda Sadeh } 6163d14c5d2SYehuda Sadeh 6173d14c5d2SYehuda Sadeh /* copy old? */ 6183d14c5d2SYehuda Sadeh if (map->osd_state) { 6193d14c5d2SYehuda Sadeh memcpy(state, map->osd_state, map->max_osd*sizeof(*state)); 6203d14c5d2SYehuda Sadeh memcpy(addr, map->osd_addr, map->max_osd*sizeof(*addr)); 6213d14c5d2SYehuda Sadeh memcpy(weight, map->osd_weight, map->max_osd*sizeof(*weight)); 6223d14c5d2SYehuda Sadeh kfree(map->osd_state); 6233d14c5d2SYehuda Sadeh kfree(map->osd_addr); 6243d14c5d2SYehuda Sadeh kfree(map->osd_weight); 6253d14c5d2SYehuda Sadeh } 6263d14c5d2SYehuda Sadeh 6273d14c5d2SYehuda Sadeh map->osd_state = state; 6283d14c5d2SYehuda Sadeh map->osd_weight = weight; 6293d14c5d2SYehuda Sadeh map->osd_addr = addr; 6303d14c5d2SYehuda Sadeh map->max_osd = max; 6313d14c5d2SYehuda Sadeh return 0; 6323d14c5d2SYehuda Sadeh } 6333d14c5d2SYehuda Sadeh 6343d14c5d2SYehuda Sadeh /* 6353d14c5d2SYehuda Sadeh * decode a full map. 6363d14c5d2SYehuda Sadeh */ 6373d14c5d2SYehuda Sadeh struct ceph_osdmap *osdmap_decode(void **p, void *end) 6383d14c5d2SYehuda Sadeh { 6393d14c5d2SYehuda Sadeh struct ceph_osdmap *map; 6403d14c5d2SYehuda Sadeh u16 version; 6413d14c5d2SYehuda Sadeh u32 len, max, i; 6423d14c5d2SYehuda Sadeh u8 ev; 6433d14c5d2SYehuda Sadeh int err = -EINVAL; 6443d14c5d2SYehuda Sadeh void *start = *p; 6453d14c5d2SYehuda Sadeh struct ceph_pg_pool_info *pi; 6463d14c5d2SYehuda Sadeh 6473d14c5d2SYehuda Sadeh dout("osdmap_decode %p to %p len %d\n", *p, end, (int)(end - *p)); 6483d14c5d2SYehuda Sadeh 6493d14c5d2SYehuda Sadeh map = kzalloc(sizeof(*map), GFP_NOFS); 6503d14c5d2SYehuda Sadeh if (map == NULL) 6513d14c5d2SYehuda Sadeh return ERR_PTR(-ENOMEM); 6523d14c5d2SYehuda Sadeh map->pg_temp = RB_ROOT; 6533d14c5d2SYehuda Sadeh 6543d14c5d2SYehuda Sadeh ceph_decode_16_safe(p, end, version, bad); 6553d14c5d2SYehuda Sadeh if (version > CEPH_OSDMAP_VERSION) { 6563d14c5d2SYehuda Sadeh pr_warning("got unknown v %d > %d of osdmap\n", version, 6573d14c5d2SYehuda Sadeh CEPH_OSDMAP_VERSION); 6583d14c5d2SYehuda Sadeh goto bad; 6593d14c5d2SYehuda Sadeh } 6603d14c5d2SYehuda Sadeh 6613d14c5d2SYehuda Sadeh ceph_decode_need(p, end, 2*sizeof(u64)+6*sizeof(u32), bad); 6623d14c5d2SYehuda Sadeh ceph_decode_copy(p, &map->fsid, sizeof(map->fsid)); 6633d14c5d2SYehuda Sadeh map->epoch = ceph_decode_32(p); 6643d14c5d2SYehuda Sadeh ceph_decode_copy(p, &map->created, sizeof(map->created)); 6653d14c5d2SYehuda Sadeh ceph_decode_copy(p, &map->modified, sizeof(map->modified)); 6663d14c5d2SYehuda Sadeh 6673d14c5d2SYehuda Sadeh ceph_decode_32_safe(p, end, max, bad); 6683d14c5d2SYehuda Sadeh while (max--) { 6693d14c5d2SYehuda Sadeh ceph_decode_need(p, end, 4 + 1 + sizeof(pi->v), bad); 6700ed7285eSSage Weil err = -ENOMEM; 6713d14c5d2SYehuda Sadeh pi = kzalloc(sizeof(*pi), GFP_NOFS); 6723d14c5d2SYehuda Sadeh if (!pi) 6733d14c5d2SYehuda Sadeh goto bad; 6743d14c5d2SYehuda Sadeh pi->id = ceph_decode_32(p); 6750ed7285eSSage Weil err = -EINVAL; 6763d14c5d2SYehuda Sadeh ev = ceph_decode_8(p); /* encoding version */ 6773d14c5d2SYehuda Sadeh if (ev > CEPH_PG_POOL_VERSION) { 6783d14c5d2SYehuda Sadeh pr_warning("got unknown v %d > %d of ceph_pg_pool\n", 6793d14c5d2SYehuda Sadeh ev, CEPH_PG_POOL_VERSION); 6803d14c5d2SYehuda Sadeh kfree(pi); 6813d14c5d2SYehuda Sadeh goto bad; 6823d14c5d2SYehuda Sadeh } 6833d14c5d2SYehuda Sadeh err = __decode_pool(p, end, pi); 684b0aee351SJesper Juhl if (err < 0) { 685b0aee351SJesper Juhl kfree(pi); 6863d14c5d2SYehuda Sadeh goto bad; 687b0aee351SJesper Juhl } 6883d14c5d2SYehuda Sadeh __insert_pg_pool(&map->pg_pools, pi); 6893d14c5d2SYehuda Sadeh } 6903d14c5d2SYehuda Sadeh 6910ed7285eSSage Weil if (version >= 5) { 6920ed7285eSSage Weil err = __decode_pool_names(p, end, map); 6930ed7285eSSage Weil if (err < 0) { 6940ed7285eSSage Weil dout("fail to decode pool names"); 6953d14c5d2SYehuda Sadeh goto bad; 6960ed7285eSSage Weil } 6970ed7285eSSage Weil } 6983d14c5d2SYehuda Sadeh 6993d14c5d2SYehuda Sadeh ceph_decode_32_safe(p, end, map->pool_max, bad); 7003d14c5d2SYehuda Sadeh 7013d14c5d2SYehuda Sadeh ceph_decode_32_safe(p, end, map->flags, bad); 7023d14c5d2SYehuda Sadeh 7033d14c5d2SYehuda Sadeh max = ceph_decode_32(p); 7043d14c5d2SYehuda Sadeh 7053d14c5d2SYehuda Sadeh /* (re)alloc osd arrays */ 7063d14c5d2SYehuda Sadeh err = osdmap_set_max_osd(map, max); 7073d14c5d2SYehuda Sadeh if (err < 0) 7083d14c5d2SYehuda Sadeh goto bad; 7093d14c5d2SYehuda Sadeh dout("osdmap_decode max_osd = %d\n", map->max_osd); 7103d14c5d2SYehuda Sadeh 7113d14c5d2SYehuda Sadeh /* osds */ 7123d14c5d2SYehuda Sadeh err = -EINVAL; 7133d14c5d2SYehuda Sadeh ceph_decode_need(p, end, 3*sizeof(u32) + 7143d14c5d2SYehuda Sadeh map->max_osd*(1 + sizeof(*map->osd_weight) + 7153d14c5d2SYehuda Sadeh sizeof(*map->osd_addr)), bad); 7163d14c5d2SYehuda Sadeh *p += 4; /* skip length field (should match max) */ 7173d14c5d2SYehuda Sadeh ceph_decode_copy(p, map->osd_state, map->max_osd); 7183d14c5d2SYehuda Sadeh 7193d14c5d2SYehuda Sadeh *p += 4; /* skip length field (should match max) */ 7203d14c5d2SYehuda Sadeh for (i = 0; i < map->max_osd; i++) 7213d14c5d2SYehuda Sadeh map->osd_weight[i] = ceph_decode_32(p); 7223d14c5d2SYehuda Sadeh 7233d14c5d2SYehuda Sadeh *p += 4; /* skip length field (should match max) */ 7243d14c5d2SYehuda Sadeh ceph_decode_copy(p, map->osd_addr, map->max_osd*sizeof(*map->osd_addr)); 7253d14c5d2SYehuda Sadeh for (i = 0; i < map->max_osd; i++) 7263d14c5d2SYehuda Sadeh ceph_decode_addr(&map->osd_addr[i]); 7273d14c5d2SYehuda Sadeh 7283d14c5d2SYehuda Sadeh /* pg_temp */ 7293d14c5d2SYehuda Sadeh ceph_decode_32_safe(p, end, len, bad); 7303d14c5d2SYehuda Sadeh for (i = 0; i < len; i++) { 7313d14c5d2SYehuda Sadeh int n, j; 7323d14c5d2SYehuda Sadeh struct ceph_pg pgid; 7333d14c5d2SYehuda Sadeh struct ceph_pg_mapping *pg; 7343d14c5d2SYehuda Sadeh 7353d14c5d2SYehuda Sadeh ceph_decode_need(p, end, sizeof(u32) + sizeof(u64), bad); 7363d14c5d2SYehuda Sadeh ceph_decode_copy(p, &pgid, sizeof(pgid)); 7373d14c5d2SYehuda Sadeh n = ceph_decode_32(p); 738e91a9b63SXi Wang err = -EINVAL; 739e91a9b63SXi Wang if (n > (UINT_MAX - sizeof(*pg)) / sizeof(u32)) 740e91a9b63SXi Wang goto bad; 7413d14c5d2SYehuda Sadeh ceph_decode_need(p, end, n * sizeof(u32), bad); 7423d14c5d2SYehuda Sadeh err = -ENOMEM; 7433d14c5d2SYehuda Sadeh pg = kmalloc(sizeof(*pg) + n*sizeof(u32), GFP_NOFS); 7443d14c5d2SYehuda Sadeh if (!pg) 7453d14c5d2SYehuda Sadeh goto bad; 7463d14c5d2SYehuda Sadeh pg->pgid = pgid; 7473d14c5d2SYehuda Sadeh pg->len = n; 7483d14c5d2SYehuda Sadeh for (j = 0; j < n; j++) 7493d14c5d2SYehuda Sadeh pg->osds[j] = ceph_decode_32(p); 7503d14c5d2SYehuda Sadeh 7513d14c5d2SYehuda Sadeh err = __insert_pg_mapping(pg, &map->pg_temp); 7523d14c5d2SYehuda Sadeh if (err) 7533d14c5d2SYehuda Sadeh goto bad; 7543d14c5d2SYehuda Sadeh dout(" added pg_temp %llx len %d\n", *(u64 *)&pgid, len); 7553d14c5d2SYehuda Sadeh } 7563d14c5d2SYehuda Sadeh 7573d14c5d2SYehuda Sadeh /* crush */ 7583d14c5d2SYehuda Sadeh ceph_decode_32_safe(p, end, len, bad); 7593d14c5d2SYehuda Sadeh dout("osdmap_decode crush len %d from off 0x%x\n", len, 7603d14c5d2SYehuda Sadeh (int)(*p - start)); 7613d14c5d2SYehuda Sadeh ceph_decode_need(p, end, len, bad); 7623d14c5d2SYehuda Sadeh map->crush = crush_decode(*p, end); 7633d14c5d2SYehuda Sadeh *p += len; 7643d14c5d2SYehuda Sadeh if (IS_ERR(map->crush)) { 7653d14c5d2SYehuda Sadeh err = PTR_ERR(map->crush); 7663d14c5d2SYehuda Sadeh map->crush = NULL; 7673d14c5d2SYehuda Sadeh goto bad; 7683d14c5d2SYehuda Sadeh } 7693d14c5d2SYehuda Sadeh 7703d14c5d2SYehuda Sadeh /* ignore the rest of the map */ 7713d14c5d2SYehuda Sadeh *p = end; 7723d14c5d2SYehuda Sadeh 7733d14c5d2SYehuda Sadeh dout("osdmap_decode done %p %p\n", *p, end); 7743d14c5d2SYehuda Sadeh return map; 7753d14c5d2SYehuda Sadeh 7763d14c5d2SYehuda Sadeh bad: 7770ed7285eSSage Weil dout("osdmap_decode fail err %d\n", err); 7783d14c5d2SYehuda Sadeh ceph_osdmap_destroy(map); 7793d14c5d2SYehuda Sadeh return ERR_PTR(err); 7803d14c5d2SYehuda Sadeh } 7813d14c5d2SYehuda Sadeh 7823d14c5d2SYehuda Sadeh /* 7833d14c5d2SYehuda Sadeh * decode and apply an incremental map update. 7843d14c5d2SYehuda Sadeh */ 7853d14c5d2SYehuda Sadeh struct ceph_osdmap *osdmap_apply_incremental(void **p, void *end, 7863d14c5d2SYehuda Sadeh struct ceph_osdmap *map, 7873d14c5d2SYehuda Sadeh struct ceph_messenger *msgr) 7883d14c5d2SYehuda Sadeh { 7893d14c5d2SYehuda Sadeh struct crush_map *newcrush = NULL; 7903d14c5d2SYehuda Sadeh struct ceph_fsid fsid; 7913d14c5d2SYehuda Sadeh u32 epoch = 0; 7923d14c5d2SYehuda Sadeh struct ceph_timespec modified; 7933d14c5d2SYehuda Sadeh u32 len, pool; 7943d14c5d2SYehuda Sadeh __s32 new_pool_max, new_flags, max; 7953d14c5d2SYehuda Sadeh void *start = *p; 7963d14c5d2SYehuda Sadeh int err = -EINVAL; 7973d14c5d2SYehuda Sadeh u16 version; 7983d14c5d2SYehuda Sadeh 7993d14c5d2SYehuda Sadeh ceph_decode_16_safe(p, end, version, bad); 8003d14c5d2SYehuda Sadeh if (version > CEPH_OSDMAP_INC_VERSION) { 8013d14c5d2SYehuda Sadeh pr_warning("got unknown v %d > %d of inc osdmap\n", version, 8023d14c5d2SYehuda Sadeh CEPH_OSDMAP_INC_VERSION); 8033d14c5d2SYehuda Sadeh goto bad; 8043d14c5d2SYehuda Sadeh } 8053d14c5d2SYehuda Sadeh 8063d14c5d2SYehuda Sadeh ceph_decode_need(p, end, sizeof(fsid)+sizeof(modified)+2*sizeof(u32), 8073d14c5d2SYehuda Sadeh bad); 8083d14c5d2SYehuda Sadeh ceph_decode_copy(p, &fsid, sizeof(fsid)); 8093d14c5d2SYehuda Sadeh epoch = ceph_decode_32(p); 8103d14c5d2SYehuda Sadeh BUG_ON(epoch != map->epoch+1); 8113d14c5d2SYehuda Sadeh ceph_decode_copy(p, &modified, sizeof(modified)); 8123d14c5d2SYehuda Sadeh new_pool_max = ceph_decode_32(p); 8133d14c5d2SYehuda Sadeh new_flags = ceph_decode_32(p); 8143d14c5d2SYehuda Sadeh 8153d14c5d2SYehuda Sadeh /* full map? */ 8163d14c5d2SYehuda Sadeh ceph_decode_32_safe(p, end, len, bad); 8173d14c5d2SYehuda Sadeh if (len > 0) { 8183d14c5d2SYehuda Sadeh dout("apply_incremental full map len %d, %p to %p\n", 8193d14c5d2SYehuda Sadeh len, *p, end); 8203d14c5d2SYehuda Sadeh return osdmap_decode(p, min(*p+len, end)); 8213d14c5d2SYehuda Sadeh } 8223d14c5d2SYehuda Sadeh 8233d14c5d2SYehuda Sadeh /* new crush? */ 8243d14c5d2SYehuda Sadeh ceph_decode_32_safe(p, end, len, bad); 8253d14c5d2SYehuda Sadeh if (len > 0) { 8263d14c5d2SYehuda Sadeh dout("apply_incremental new crush map len %d, %p to %p\n", 8273d14c5d2SYehuda Sadeh len, *p, end); 8283d14c5d2SYehuda Sadeh newcrush = crush_decode(*p, min(*p+len, end)); 8293d14c5d2SYehuda Sadeh if (IS_ERR(newcrush)) 8303d14c5d2SYehuda Sadeh return ERR_CAST(newcrush); 8313d14c5d2SYehuda Sadeh *p += len; 8323d14c5d2SYehuda Sadeh } 8333d14c5d2SYehuda Sadeh 8343d14c5d2SYehuda Sadeh /* new flags? */ 8353d14c5d2SYehuda Sadeh if (new_flags >= 0) 8363d14c5d2SYehuda Sadeh map->flags = new_flags; 8373d14c5d2SYehuda Sadeh if (new_pool_max >= 0) 8383d14c5d2SYehuda Sadeh map->pool_max = new_pool_max; 8393d14c5d2SYehuda Sadeh 8403d14c5d2SYehuda Sadeh ceph_decode_need(p, end, 5*sizeof(u32), bad); 8413d14c5d2SYehuda Sadeh 8423d14c5d2SYehuda Sadeh /* new max? */ 8433d14c5d2SYehuda Sadeh max = ceph_decode_32(p); 8443d14c5d2SYehuda Sadeh if (max >= 0) { 8453d14c5d2SYehuda Sadeh err = osdmap_set_max_osd(map, max); 8463d14c5d2SYehuda Sadeh if (err < 0) 8473d14c5d2SYehuda Sadeh goto bad; 8483d14c5d2SYehuda Sadeh } 8493d14c5d2SYehuda Sadeh 8503d14c5d2SYehuda Sadeh map->epoch++; 85131456665SSage Weil map->modified = modified; 8523d14c5d2SYehuda Sadeh if (newcrush) { 8533d14c5d2SYehuda Sadeh if (map->crush) 8543d14c5d2SYehuda Sadeh crush_destroy(map->crush); 8553d14c5d2SYehuda Sadeh map->crush = newcrush; 8563d14c5d2SYehuda Sadeh newcrush = NULL; 8573d14c5d2SYehuda Sadeh } 8583d14c5d2SYehuda Sadeh 8593d14c5d2SYehuda Sadeh /* new_pool */ 8603d14c5d2SYehuda Sadeh ceph_decode_32_safe(p, end, len, bad); 8613d14c5d2SYehuda Sadeh while (len--) { 8623d14c5d2SYehuda Sadeh __u8 ev; 8633d14c5d2SYehuda Sadeh struct ceph_pg_pool_info *pi; 8643d14c5d2SYehuda Sadeh 8653d14c5d2SYehuda Sadeh ceph_decode_32_safe(p, end, pool, bad); 8663d14c5d2SYehuda Sadeh ceph_decode_need(p, end, 1 + sizeof(pi->v), bad); 8673d14c5d2SYehuda Sadeh ev = ceph_decode_8(p); /* encoding version */ 8683d14c5d2SYehuda Sadeh if (ev > CEPH_PG_POOL_VERSION) { 8693d14c5d2SYehuda Sadeh pr_warning("got unknown v %d > %d of ceph_pg_pool\n", 8703d14c5d2SYehuda Sadeh ev, CEPH_PG_POOL_VERSION); 8710ed7285eSSage Weil err = -EINVAL; 8723d14c5d2SYehuda Sadeh goto bad; 8733d14c5d2SYehuda Sadeh } 8743d14c5d2SYehuda Sadeh pi = __lookup_pg_pool(&map->pg_pools, pool); 8753d14c5d2SYehuda Sadeh if (!pi) { 8763d14c5d2SYehuda Sadeh pi = kzalloc(sizeof(*pi), GFP_NOFS); 8773d14c5d2SYehuda Sadeh if (!pi) { 8783d14c5d2SYehuda Sadeh err = -ENOMEM; 8793d14c5d2SYehuda Sadeh goto bad; 8803d14c5d2SYehuda Sadeh } 8813d14c5d2SYehuda Sadeh pi->id = pool; 8823d14c5d2SYehuda Sadeh __insert_pg_pool(&map->pg_pools, pi); 8833d14c5d2SYehuda Sadeh } 8843d14c5d2SYehuda Sadeh err = __decode_pool(p, end, pi); 8853d14c5d2SYehuda Sadeh if (err < 0) 8863d14c5d2SYehuda Sadeh goto bad; 8873d14c5d2SYehuda Sadeh } 8880ed7285eSSage Weil if (version >= 5) { 8890ed7285eSSage Weil err = __decode_pool_names(p, end, map); 8900ed7285eSSage Weil if (err < 0) 8913d14c5d2SYehuda Sadeh goto bad; 8920ed7285eSSage Weil } 8933d14c5d2SYehuda Sadeh 8943d14c5d2SYehuda Sadeh /* old_pool */ 8953d14c5d2SYehuda Sadeh ceph_decode_32_safe(p, end, len, bad); 8963d14c5d2SYehuda Sadeh while (len--) { 8973d14c5d2SYehuda Sadeh struct ceph_pg_pool_info *pi; 8983d14c5d2SYehuda Sadeh 8993d14c5d2SYehuda Sadeh ceph_decode_32_safe(p, end, pool, bad); 9003d14c5d2SYehuda Sadeh pi = __lookup_pg_pool(&map->pg_pools, pool); 9013d14c5d2SYehuda Sadeh if (pi) 9023d14c5d2SYehuda Sadeh __remove_pg_pool(&map->pg_pools, pi); 9033d14c5d2SYehuda Sadeh } 9043d14c5d2SYehuda Sadeh 9053d14c5d2SYehuda Sadeh /* new_up */ 9063d14c5d2SYehuda Sadeh err = -EINVAL; 9073d14c5d2SYehuda Sadeh ceph_decode_32_safe(p, end, len, bad); 9083d14c5d2SYehuda Sadeh while (len--) { 9093d14c5d2SYehuda Sadeh u32 osd; 9103d14c5d2SYehuda Sadeh struct ceph_entity_addr addr; 9113d14c5d2SYehuda Sadeh ceph_decode_32_safe(p, end, osd, bad); 9123d14c5d2SYehuda Sadeh ceph_decode_copy_safe(p, end, &addr, sizeof(addr), bad); 9133d14c5d2SYehuda Sadeh ceph_decode_addr(&addr); 9143d14c5d2SYehuda Sadeh pr_info("osd%d up\n", osd); 9153d14c5d2SYehuda Sadeh BUG_ON(osd >= map->max_osd); 9163d14c5d2SYehuda Sadeh map->osd_state[osd] |= CEPH_OSD_UP; 9173d14c5d2SYehuda Sadeh map->osd_addr[osd] = addr; 9183d14c5d2SYehuda Sadeh } 9193d14c5d2SYehuda Sadeh 9207662d8ffSSage Weil /* new_state */ 9213d14c5d2SYehuda Sadeh ceph_decode_32_safe(p, end, len, bad); 9223d14c5d2SYehuda Sadeh while (len--) { 9233d14c5d2SYehuda Sadeh u32 osd; 9247662d8ffSSage Weil u8 xorstate; 9253d14c5d2SYehuda Sadeh ceph_decode_32_safe(p, end, osd, bad); 9267662d8ffSSage Weil xorstate = **(u8 **)p; 9273d14c5d2SYehuda Sadeh (*p)++; /* clean flag */ 9287662d8ffSSage Weil if (xorstate == 0) 9297662d8ffSSage Weil xorstate = CEPH_OSD_UP; 9307662d8ffSSage Weil if (xorstate & CEPH_OSD_UP) 9313d14c5d2SYehuda Sadeh pr_info("osd%d down\n", osd); 9323d14c5d2SYehuda Sadeh if (osd < map->max_osd) 9337662d8ffSSage Weil map->osd_state[osd] ^= xorstate; 9343d14c5d2SYehuda Sadeh } 9353d14c5d2SYehuda Sadeh 9363d14c5d2SYehuda Sadeh /* new_weight */ 9373d14c5d2SYehuda Sadeh ceph_decode_32_safe(p, end, len, bad); 9383d14c5d2SYehuda Sadeh while (len--) { 9393d14c5d2SYehuda Sadeh u32 osd, off; 9403d14c5d2SYehuda Sadeh ceph_decode_need(p, end, sizeof(u32)*2, bad); 9413d14c5d2SYehuda Sadeh osd = ceph_decode_32(p); 9423d14c5d2SYehuda Sadeh off = ceph_decode_32(p); 9433d14c5d2SYehuda Sadeh pr_info("osd%d weight 0x%x %s\n", osd, off, 9443d14c5d2SYehuda Sadeh off == CEPH_OSD_IN ? "(in)" : 9453d14c5d2SYehuda Sadeh (off == CEPH_OSD_OUT ? "(out)" : "")); 9463d14c5d2SYehuda Sadeh if (osd < map->max_osd) 9473d14c5d2SYehuda Sadeh map->osd_weight[osd] = off; 9483d14c5d2SYehuda Sadeh } 9493d14c5d2SYehuda Sadeh 9503d14c5d2SYehuda Sadeh /* new_pg_temp */ 9513d14c5d2SYehuda Sadeh ceph_decode_32_safe(p, end, len, bad); 9523d14c5d2SYehuda Sadeh while (len--) { 9533d14c5d2SYehuda Sadeh struct ceph_pg_mapping *pg; 9543d14c5d2SYehuda Sadeh int j; 9553d14c5d2SYehuda Sadeh struct ceph_pg pgid; 9563d14c5d2SYehuda Sadeh u32 pglen; 9573d14c5d2SYehuda Sadeh ceph_decode_need(p, end, sizeof(u64) + sizeof(u32), bad); 9583d14c5d2SYehuda Sadeh ceph_decode_copy(p, &pgid, sizeof(pgid)); 9593d14c5d2SYehuda Sadeh pglen = ceph_decode_32(p); 9603d14c5d2SYehuda Sadeh 9613d14c5d2SYehuda Sadeh if (pglen) { 9623d14c5d2SYehuda Sadeh ceph_decode_need(p, end, pglen*sizeof(u32), bad); 9636bd9adbdSSage Weil 9646bd9adbdSSage Weil /* removing existing (if any) */ 9656bd9adbdSSage Weil (void) __remove_pg_mapping(&map->pg_temp, pgid); 9666bd9adbdSSage Weil 9676bd9adbdSSage Weil /* insert */ 968a5506049SXi Wang err = -EINVAL; 9690ed7285eSSage Weil if (pglen > (UINT_MAX - sizeof(*pg)) / sizeof(u32)) 970a5506049SXi Wang goto bad; 9713d14c5d2SYehuda Sadeh err = -ENOMEM; 9720ed7285eSSage Weil pg = kmalloc(sizeof(*pg) + sizeof(u32)*pglen, GFP_NOFS); 9730ed7285eSSage Weil if (!pg) 9743d14c5d2SYehuda Sadeh goto bad; 9753d14c5d2SYehuda Sadeh pg->pgid = pgid; 9763d14c5d2SYehuda Sadeh pg->len = pglen; 9773d14c5d2SYehuda Sadeh for (j = 0; j < pglen; j++) 9783d14c5d2SYehuda Sadeh pg->osds[j] = ceph_decode_32(p); 9793d14c5d2SYehuda Sadeh err = __insert_pg_mapping(pg, &map->pg_temp); 9803d14c5d2SYehuda Sadeh if (err) { 9813d14c5d2SYehuda Sadeh kfree(pg); 9823d14c5d2SYehuda Sadeh goto bad; 9833d14c5d2SYehuda Sadeh } 9843d14c5d2SYehuda Sadeh dout(" added pg_temp %llx len %d\n", *(u64 *)&pgid, 9853d14c5d2SYehuda Sadeh pglen); 9868adc8b3dSSage Weil } else { 9878adc8b3dSSage Weil /* remove */ 9888adc8b3dSSage Weil __remove_pg_mapping(&map->pg_temp, pgid); 9893d14c5d2SYehuda Sadeh } 9903d14c5d2SYehuda Sadeh } 9913d14c5d2SYehuda Sadeh 9923d14c5d2SYehuda Sadeh /* ignore the rest */ 9933d14c5d2SYehuda Sadeh *p = end; 9943d14c5d2SYehuda Sadeh return map; 9953d14c5d2SYehuda Sadeh 9963d14c5d2SYehuda Sadeh bad: 9973d14c5d2SYehuda Sadeh pr_err("corrupt inc osdmap epoch %d off %d (%p of %p-%p)\n", 9983d14c5d2SYehuda Sadeh epoch, (int)(*p - start), *p, start, end); 9993d14c5d2SYehuda Sadeh print_hex_dump(KERN_DEBUG, "osdmap: ", 10003d14c5d2SYehuda Sadeh DUMP_PREFIX_OFFSET, 16, 1, 10013d14c5d2SYehuda Sadeh start, end - start, true); 10023d14c5d2SYehuda Sadeh if (newcrush) 10033d14c5d2SYehuda Sadeh crush_destroy(newcrush); 10043d14c5d2SYehuda Sadeh return ERR_PTR(err); 10053d14c5d2SYehuda Sadeh } 10063d14c5d2SYehuda Sadeh 10073d14c5d2SYehuda Sadeh 10083d14c5d2SYehuda Sadeh 10093d14c5d2SYehuda Sadeh 10103d14c5d2SYehuda Sadeh /* 10113d14c5d2SYehuda Sadeh * calculate file layout from given offset, length. 10123d14c5d2SYehuda Sadeh * fill in correct oid, logical length, and object extent 10133d14c5d2SYehuda Sadeh * offset, length. 10143d14c5d2SYehuda Sadeh * 10153d14c5d2SYehuda Sadeh * for now, we write only a single su, until we can 10163d14c5d2SYehuda Sadeh * pass a stride back to the caller. 10173d14c5d2SYehuda Sadeh */ 1018d63b77f4SSage Weil int ceph_calc_file_object_mapping(struct ceph_file_layout *layout, 10193d14c5d2SYehuda Sadeh u64 off, u64 *plen, 10203d14c5d2SYehuda Sadeh u64 *ono, 10213d14c5d2SYehuda Sadeh u64 *oxoff, u64 *oxlen) 10223d14c5d2SYehuda Sadeh { 10233d14c5d2SYehuda Sadeh u32 osize = le32_to_cpu(layout->fl_object_size); 10243d14c5d2SYehuda Sadeh u32 su = le32_to_cpu(layout->fl_stripe_unit); 10253d14c5d2SYehuda Sadeh u32 sc = le32_to_cpu(layout->fl_stripe_count); 10263d14c5d2SYehuda Sadeh u32 bl, stripeno, stripepos, objsetno; 10273d14c5d2SYehuda Sadeh u32 su_per_object; 10283d14c5d2SYehuda Sadeh u64 t, su_offset; 10293d14c5d2SYehuda Sadeh 10303d14c5d2SYehuda Sadeh dout("mapping %llu~%llu osize %u fl_su %u\n", off, *plen, 10313d14c5d2SYehuda Sadeh osize, su); 1032d63b77f4SSage Weil if (su == 0 || sc == 0) 1033d63b77f4SSage Weil goto invalid; 10343d14c5d2SYehuda Sadeh su_per_object = osize / su; 1035d63b77f4SSage Weil if (su_per_object == 0) 1036d63b77f4SSage Weil goto invalid; 10373d14c5d2SYehuda Sadeh dout("osize %u / su %u = su_per_object %u\n", osize, su, 10383d14c5d2SYehuda Sadeh su_per_object); 10393d14c5d2SYehuda Sadeh 1040d63b77f4SSage Weil if ((su & ~PAGE_MASK) != 0) 1041d63b77f4SSage Weil goto invalid; 1042d63b77f4SSage Weil 10433d14c5d2SYehuda Sadeh /* bl = *off / su; */ 10443d14c5d2SYehuda Sadeh t = off; 10453d14c5d2SYehuda Sadeh do_div(t, su); 10463d14c5d2SYehuda Sadeh bl = t; 10473d14c5d2SYehuda Sadeh dout("off %llu / su %u = bl %u\n", off, su, bl); 10483d14c5d2SYehuda Sadeh 10493d14c5d2SYehuda Sadeh stripeno = bl / sc; 10503d14c5d2SYehuda Sadeh stripepos = bl % sc; 10513d14c5d2SYehuda Sadeh objsetno = stripeno / su_per_object; 10523d14c5d2SYehuda Sadeh 10533d14c5d2SYehuda Sadeh *ono = objsetno * sc + stripepos; 105495c96174SEric Dumazet dout("objset %u * sc %u = ono %u\n", objsetno, sc, (unsigned int)*ono); 10553d14c5d2SYehuda Sadeh 10563d14c5d2SYehuda Sadeh /* *oxoff = *off % layout->fl_stripe_unit; # offset in su */ 10573d14c5d2SYehuda Sadeh t = off; 10583d14c5d2SYehuda Sadeh su_offset = do_div(t, su); 10593d14c5d2SYehuda Sadeh *oxoff = su_offset + (stripeno % su_per_object) * su; 10603d14c5d2SYehuda Sadeh 10613d14c5d2SYehuda Sadeh /* 10623d14c5d2SYehuda Sadeh * Calculate the length of the extent being written to the selected 10633d14c5d2SYehuda Sadeh * object. This is the minimum of the full length requested (plen) or 10643d14c5d2SYehuda Sadeh * the remainder of the current stripe being written to. 10653d14c5d2SYehuda Sadeh */ 10663d14c5d2SYehuda Sadeh *oxlen = min_t(u64, *plen, su - su_offset); 10673d14c5d2SYehuda Sadeh *plen = *oxlen; 10683d14c5d2SYehuda Sadeh 10693d14c5d2SYehuda Sadeh dout(" obj extent %llu~%llu\n", *oxoff, *oxlen); 1070d63b77f4SSage Weil return 0; 1071d63b77f4SSage Weil 1072d63b77f4SSage Weil invalid: 1073d63b77f4SSage Weil dout(" invalid layout\n"); 1074d63b77f4SSage Weil *ono = 0; 1075d63b77f4SSage Weil *oxoff = 0; 1076d63b77f4SSage Weil *oxlen = 0; 1077d63b77f4SSage Weil return -EINVAL; 10783d14c5d2SYehuda Sadeh } 10793d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_calc_file_object_mapping); 10803d14c5d2SYehuda Sadeh 10813d14c5d2SYehuda Sadeh /* 10823d14c5d2SYehuda Sadeh * calculate an object layout (i.e. pgid) from an oid, 10833d14c5d2SYehuda Sadeh * file_layout, and osdmap 10843d14c5d2SYehuda Sadeh */ 10853d14c5d2SYehuda Sadeh int ceph_calc_object_layout(struct ceph_object_layout *ol, 10863d14c5d2SYehuda Sadeh const char *oid, 10873d14c5d2SYehuda Sadeh struct ceph_file_layout *fl, 10883d14c5d2SYehuda Sadeh struct ceph_osdmap *osdmap) 10893d14c5d2SYehuda Sadeh { 109095c96174SEric Dumazet unsigned int num, num_mask; 10913d14c5d2SYehuda Sadeh struct ceph_pg pgid; 10923d14c5d2SYehuda Sadeh int poolid = le32_to_cpu(fl->fl_pg_pool); 10933d14c5d2SYehuda Sadeh struct ceph_pg_pool_info *pool; 109495c96174SEric Dumazet unsigned int ps; 10953d14c5d2SYehuda Sadeh 10963d14c5d2SYehuda Sadeh BUG_ON(!osdmap); 10973d14c5d2SYehuda Sadeh 10983d14c5d2SYehuda Sadeh pool = __lookup_pg_pool(&osdmap->pg_pools, poolid); 10993d14c5d2SYehuda Sadeh if (!pool) 11003d14c5d2SYehuda Sadeh return -EIO; 11013d14c5d2SYehuda Sadeh ps = ceph_str_hash(pool->v.object_hash, oid, strlen(oid)); 11023d14c5d2SYehuda Sadeh num = le32_to_cpu(pool->v.pg_num); 11033d14c5d2SYehuda Sadeh num_mask = pool->pg_num_mask; 11043d14c5d2SYehuda Sadeh 11053d14c5d2SYehuda Sadeh pgid.ps = cpu_to_le16(ps); 11063469ac1aSSage Weil pgid.preferred = cpu_to_le16(-1); 11073d14c5d2SYehuda Sadeh pgid.pool = fl->fl_pg_pool; 11083d14c5d2SYehuda Sadeh dout("calc_object_layout '%s' pgid %d.%x\n", oid, poolid, ps); 11093d14c5d2SYehuda Sadeh 11103d14c5d2SYehuda Sadeh ol->ol_pgid = pgid; 11113d14c5d2SYehuda Sadeh ol->ol_stripe_unit = fl->fl_object_stripe_unit; 11123d14c5d2SYehuda Sadeh return 0; 11133d14c5d2SYehuda Sadeh } 11143d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_calc_object_layout); 11153d14c5d2SYehuda Sadeh 11163d14c5d2SYehuda Sadeh /* 11173d14c5d2SYehuda Sadeh * Calculate raw osd vector for the given pgid. Return pointer to osd 11183d14c5d2SYehuda Sadeh * array, or NULL on failure. 11193d14c5d2SYehuda Sadeh */ 11203d14c5d2SYehuda Sadeh static int *calc_pg_raw(struct ceph_osdmap *osdmap, struct ceph_pg pgid, 11213d14c5d2SYehuda Sadeh int *osds, int *num) 11223d14c5d2SYehuda Sadeh { 11233d14c5d2SYehuda Sadeh struct ceph_pg_mapping *pg; 11243d14c5d2SYehuda Sadeh struct ceph_pg_pool_info *pool; 11253d14c5d2SYehuda Sadeh int ruleno; 1126af56e0aaSLinus Torvalds unsigned int poolid, ps, pps, t, r; 11273d14c5d2SYehuda Sadeh 1128782e182eSSage Weil poolid = le32_to_cpu(pgid.pool); 1129782e182eSSage Weil ps = le16_to_cpu(pgid.ps); 1130782e182eSSage Weil 1131782e182eSSage Weil pool = __lookup_pg_pool(&osdmap->pg_pools, poolid); 1132782e182eSSage Weil if (!pool) 1133782e182eSSage Weil return NULL; 1134782e182eSSage Weil 11353d14c5d2SYehuda Sadeh /* pg_temp? */ 1136782e182eSSage Weil t = ceph_stable_mod(ps, le32_to_cpu(pool->v.pg_num), 1137782e182eSSage Weil pool->pgp_num_mask); 1138782e182eSSage Weil pgid.ps = cpu_to_le16(t); 11393d14c5d2SYehuda Sadeh pg = __lookup_pg_mapping(&osdmap->pg_temp, pgid); 11403d14c5d2SYehuda Sadeh if (pg) { 11413d14c5d2SYehuda Sadeh *num = pg->len; 11423d14c5d2SYehuda Sadeh return pg->osds; 11433d14c5d2SYehuda Sadeh } 11443d14c5d2SYehuda Sadeh 11453d14c5d2SYehuda Sadeh /* crush */ 11463d14c5d2SYehuda Sadeh ruleno = crush_find_rule(osdmap->crush, pool->v.crush_ruleset, 11473d14c5d2SYehuda Sadeh pool->v.type, pool->v.size); 11483d14c5d2SYehuda Sadeh if (ruleno < 0) { 11493d14c5d2SYehuda Sadeh pr_err("no crush rule pool %d ruleset %d type %d size %d\n", 11503d14c5d2SYehuda Sadeh poolid, pool->v.crush_ruleset, pool->v.type, 11513d14c5d2SYehuda Sadeh pool->v.size); 11523d14c5d2SYehuda Sadeh return NULL; 11533d14c5d2SYehuda Sadeh } 11543d14c5d2SYehuda Sadeh 11553d14c5d2SYehuda Sadeh pps = ceph_stable_mod(ps, 11563d14c5d2SYehuda Sadeh le32_to_cpu(pool->v.pgp_num), 11573d14c5d2SYehuda Sadeh pool->pgp_num_mask); 11583d14c5d2SYehuda Sadeh pps += poolid; 11598b393269SSage Weil r = crush_do_rule(osdmap->crush, ruleno, pps, osds, 11603d14c5d2SYehuda Sadeh min_t(int, pool->v.size, *num), 116141ebcc09SSage Weil osdmap->osd_weight); 11628b393269SSage Weil if (r < 0) { 11638b393269SSage Weil pr_err("error %d from crush rule: pool %d ruleset %d type %d" 11648b393269SSage Weil " size %d\n", r, poolid, pool->v.crush_ruleset, 11658b393269SSage Weil pool->v.type, pool->v.size); 11668b393269SSage Weil return NULL; 11678b393269SSage Weil } 11688b393269SSage Weil *num = r; 11693d14c5d2SYehuda Sadeh return osds; 11703d14c5d2SYehuda Sadeh } 11713d14c5d2SYehuda Sadeh 11723d14c5d2SYehuda Sadeh /* 11733d14c5d2SYehuda Sadeh * Return acting set for given pgid. 11743d14c5d2SYehuda Sadeh */ 11753d14c5d2SYehuda Sadeh int ceph_calc_pg_acting(struct ceph_osdmap *osdmap, struct ceph_pg pgid, 11763d14c5d2SYehuda Sadeh int *acting) 11773d14c5d2SYehuda Sadeh { 11783d14c5d2SYehuda Sadeh int rawosds[CEPH_PG_MAX_SIZE], *osds; 11793d14c5d2SYehuda Sadeh int i, o, num = CEPH_PG_MAX_SIZE; 11803d14c5d2SYehuda Sadeh 11813d14c5d2SYehuda Sadeh osds = calc_pg_raw(osdmap, pgid, rawosds, &num); 11823d14c5d2SYehuda Sadeh if (!osds) 11833d14c5d2SYehuda Sadeh return -1; 11843d14c5d2SYehuda Sadeh 11853d14c5d2SYehuda Sadeh /* primary is first up osd */ 11863d14c5d2SYehuda Sadeh o = 0; 11873d14c5d2SYehuda Sadeh for (i = 0; i < num; i++) 11883d14c5d2SYehuda Sadeh if (ceph_osd_is_up(osdmap, osds[i])) 11893d14c5d2SYehuda Sadeh acting[o++] = osds[i]; 11903d14c5d2SYehuda Sadeh return o; 11913d14c5d2SYehuda Sadeh } 11923d14c5d2SYehuda Sadeh 11933d14c5d2SYehuda Sadeh /* 11943d14c5d2SYehuda Sadeh * Return primary osd for given pgid, or -1 if none. 11953d14c5d2SYehuda Sadeh */ 11963d14c5d2SYehuda Sadeh int ceph_calc_pg_primary(struct ceph_osdmap *osdmap, struct ceph_pg pgid) 11973d14c5d2SYehuda Sadeh { 11983d14c5d2SYehuda Sadeh int rawosds[CEPH_PG_MAX_SIZE], *osds; 11993d14c5d2SYehuda Sadeh int i, num = CEPH_PG_MAX_SIZE; 12003d14c5d2SYehuda Sadeh 12013d14c5d2SYehuda Sadeh osds = calc_pg_raw(osdmap, pgid, rawosds, &num); 12023d14c5d2SYehuda Sadeh if (!osds) 12033d14c5d2SYehuda Sadeh return -1; 12043d14c5d2SYehuda Sadeh 12053d14c5d2SYehuda Sadeh /* primary is first up osd */ 12063d14c5d2SYehuda Sadeh for (i = 0; i < num; i++) 12073d14c5d2SYehuda Sadeh if (ceph_osd_is_up(osdmap, osds[i])) 12083d14c5d2SYehuda Sadeh return osds[i]; 12093d14c5d2SYehuda Sadeh return -1; 12103d14c5d2SYehuda Sadeh } 12113d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_calc_pg_primary); 1212