1 /* 2 * Copyright (c) 2018 Chelsio, Inc. All rights reserved. 3 * 4 * This software is available to you under a choice of one of two 5 * licenses. You may choose to be licensed under the terms of the GNU 6 * General Public License (GPL) Version 2, available from the file 7 * COPYING in the main directory of this source tree, or the 8 * OpenIB.org BSD license below: 9 * 10 * Redistribution and use in source and binary forms, with or 11 * without modification, are permitted provided that the following 12 * conditions are met: 13 * 14 * - Redistributions of source code must retain the above 15 * copyright notice, this list of conditions and the following 16 * disclaimer. 17 * 18 * - Redistributions in binary form must reproduce the above 19 * copyright notice, this list of conditions and the following 20 * disclaimer in the documentation and/or other materials 21 * provided with the distribution. 22 * 23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 30 * SOFTWARE. 31 */ 32 33 #include <rdma/rdma_cm.h> 34 35 #include "iw_cxgb4.h" 36 #include <rdma/restrack.h> 37 #include <uapi/rdma/rdma_netlink.h> 38 39 static int fill_sq(struct sk_buff *msg, struct t4_wq *wq) 40 { 41 /* WQ+SQ */ 42 if (rdma_nl_put_driver_u32(msg, "sqid", wq->sq.qid)) 43 goto err; 44 if (rdma_nl_put_driver_u32(msg, "flushed", wq->flushed)) 45 goto err; 46 if (rdma_nl_put_driver_u32(msg, "memsize", wq->sq.memsize)) 47 goto err; 48 if (rdma_nl_put_driver_u32(msg, "cidx", wq->sq.cidx)) 49 goto err; 50 if (rdma_nl_put_driver_u32(msg, "pidx", wq->sq.pidx)) 51 goto err; 52 if (rdma_nl_put_driver_u32(msg, "wq_pidx", wq->sq.wq_pidx)) 53 goto err; 54 if (rdma_nl_put_driver_u32(msg, "flush_cidx", wq->sq.flush_cidx)) 55 goto err; 56 if (rdma_nl_put_driver_u32(msg, "in_use", wq->sq.in_use)) 57 goto err; 58 if (rdma_nl_put_driver_u32(msg, "size", wq->sq.size)) 59 goto err; 60 if (rdma_nl_put_driver_u32_hex(msg, "flags", wq->sq.flags)) 61 goto err; 62 return 0; 63 err: 64 return -EMSGSIZE; 65 } 66 67 static int fill_rq(struct sk_buff *msg, struct t4_wq *wq) 68 { 69 /* RQ */ 70 if (rdma_nl_put_driver_u32(msg, "rqid", wq->rq.qid)) 71 goto err; 72 if (rdma_nl_put_driver_u32(msg, "memsize", wq->rq.memsize)) 73 goto err; 74 if (rdma_nl_put_driver_u32(msg, "cidx", wq->rq.cidx)) 75 goto err; 76 if (rdma_nl_put_driver_u32(msg, "pidx", wq->rq.pidx)) 77 goto err; 78 if (rdma_nl_put_driver_u32(msg, "wq_pidx", wq->rq.wq_pidx)) 79 goto err; 80 if (rdma_nl_put_driver_u32(msg, "msn", wq->rq.msn)) 81 goto err; 82 if (rdma_nl_put_driver_u32_hex(msg, "rqt_hwaddr", wq->rq.rqt_hwaddr)) 83 goto err; 84 if (rdma_nl_put_driver_u32(msg, "rqt_size", wq->rq.rqt_size)) 85 goto err; 86 if (rdma_nl_put_driver_u32(msg, "in_use", wq->rq.in_use)) 87 goto err; 88 if (rdma_nl_put_driver_u32(msg, "size", wq->rq.size)) 89 goto err; 90 return 0; 91 err: 92 return -EMSGSIZE; 93 } 94 95 static int fill_swsqe(struct sk_buff *msg, struct t4_sq *sq, u16 idx, 96 struct t4_swsqe *sqe) 97 { 98 if (rdma_nl_put_driver_u32(msg, "idx", idx)) 99 goto err; 100 if (rdma_nl_put_driver_u32(msg, "opcode", sqe->opcode)) 101 goto err; 102 if (rdma_nl_put_driver_u32(msg, "complete", sqe->complete)) 103 goto err; 104 if (sqe->complete && 105 rdma_nl_put_driver_u32(msg, "cqe_status", CQE_STATUS(&sqe->cqe))) 106 goto err; 107 if (rdma_nl_put_driver_u32(msg, "signaled", sqe->signaled)) 108 goto err; 109 if (rdma_nl_put_driver_u32(msg, "flushed", sqe->flushed)) 110 goto err; 111 return 0; 112 err: 113 return -EMSGSIZE; 114 } 115 116 /* 117 * Dump the first and last pending sqes. 118 */ 119 static int fill_swsqes(struct sk_buff *msg, struct t4_sq *sq, 120 u16 first_idx, struct t4_swsqe *first_sqe, 121 u16 last_idx, struct t4_swsqe *last_sqe) 122 { 123 if (!first_sqe) 124 goto out; 125 if (fill_swsqe(msg, sq, first_idx, first_sqe)) 126 goto err; 127 if (!last_sqe) 128 goto out; 129 if (fill_swsqe(msg, sq, last_idx, last_sqe)) 130 goto err; 131 out: 132 return 0; 133 err: 134 return -EMSGSIZE; 135 } 136 137 int c4iw_fill_res_qp_entry(struct sk_buff *msg, struct ib_qp *ibqp) 138 { 139 struct t4_swsqe *fsp = NULL, *lsp = NULL; 140 struct c4iw_qp *qhp = to_c4iw_qp(ibqp); 141 u16 first_sq_idx = 0, last_sq_idx = 0; 142 struct t4_swsqe first_sqe, last_sqe; 143 struct nlattr *table_attr; 144 struct t4_wq wq; 145 146 /* User qp state is not available, so don't dump user qps */ 147 if (qhp->ucontext) 148 return 0; 149 150 table_attr = nla_nest_start_noflag(msg, RDMA_NLDEV_ATTR_DRIVER); 151 if (!table_attr) 152 goto err; 153 154 /* Get a consistent snapshot */ 155 spin_lock_irq(&qhp->lock); 156 wq = qhp->wq; 157 158 /* If there are any pending sqes, copy the first and last */ 159 if (wq.sq.cidx != wq.sq.pidx) { 160 first_sq_idx = wq.sq.cidx; 161 first_sqe = qhp->wq.sq.sw_sq[first_sq_idx]; 162 fsp = &first_sqe; 163 last_sq_idx = wq.sq.pidx; 164 if (last_sq_idx-- == 0) 165 last_sq_idx = wq.sq.size - 1; 166 if (last_sq_idx != first_sq_idx) { 167 last_sqe = qhp->wq.sq.sw_sq[last_sq_idx]; 168 lsp = &last_sqe; 169 } 170 } 171 spin_unlock_irq(&qhp->lock); 172 173 if (fill_sq(msg, &wq)) 174 goto err_cancel_table; 175 176 if (fill_swsqes(msg, &wq.sq, first_sq_idx, fsp, last_sq_idx, lsp)) 177 goto err_cancel_table; 178 179 if (fill_rq(msg, &wq)) 180 goto err_cancel_table; 181 182 nla_nest_end(msg, table_attr); 183 return 0; 184 185 err_cancel_table: 186 nla_nest_cancel(msg, table_attr); 187 err: 188 return -EMSGSIZE; 189 } 190 191 union union_ep { 192 struct c4iw_listen_ep lep; 193 struct c4iw_ep ep; 194 }; 195 196 int c4iw_fill_res_cm_id_entry(struct sk_buff *msg, 197 struct rdma_cm_id *cm_id) 198 { 199 struct nlattr *table_attr; 200 struct c4iw_ep_common *epcp; 201 struct c4iw_listen_ep *listen_ep = NULL; 202 struct c4iw_ep *ep = NULL; 203 struct iw_cm_id *iw_cm_id; 204 union union_ep *uep; 205 206 iw_cm_id = rdma_iw_cm_id(cm_id); 207 if (!iw_cm_id) 208 return 0; 209 epcp = (struct c4iw_ep_common *)iw_cm_id->provider_data; 210 if (!epcp) 211 return 0; 212 uep = kcalloc(1, sizeof(*uep), GFP_KERNEL); 213 if (!uep) 214 return 0; 215 216 table_attr = nla_nest_start_noflag(msg, RDMA_NLDEV_ATTR_DRIVER); 217 if (!table_attr) 218 goto err_free_uep; 219 220 /* Get a consistent snapshot */ 221 mutex_lock(&epcp->mutex); 222 if (epcp->state == LISTEN) { 223 uep->lep = *(struct c4iw_listen_ep *)epcp; 224 mutex_unlock(&epcp->mutex); 225 listen_ep = &uep->lep; 226 epcp = &listen_ep->com; 227 } else { 228 uep->ep = *(struct c4iw_ep *)epcp; 229 mutex_unlock(&epcp->mutex); 230 ep = &uep->ep; 231 epcp = &ep->com; 232 } 233 234 if (rdma_nl_put_driver_u32(msg, "state", epcp->state)) 235 goto err_cancel_table; 236 if (rdma_nl_put_driver_u64_hex(msg, "flags", epcp->flags)) 237 goto err_cancel_table; 238 if (rdma_nl_put_driver_u64_hex(msg, "history", epcp->history)) 239 goto err_cancel_table; 240 241 if (epcp->state == LISTEN) { 242 if (rdma_nl_put_driver_u32(msg, "stid", listen_ep->stid)) 243 goto err_cancel_table; 244 if (rdma_nl_put_driver_u32(msg, "backlog", listen_ep->backlog)) 245 goto err_cancel_table; 246 } else { 247 if (rdma_nl_put_driver_u32(msg, "hwtid", ep->hwtid)) 248 goto err_cancel_table; 249 if (rdma_nl_put_driver_u32(msg, "ord", ep->ord)) 250 goto err_cancel_table; 251 if (rdma_nl_put_driver_u32(msg, "ird", ep->ird)) 252 goto err_cancel_table; 253 if (rdma_nl_put_driver_u32(msg, "emss", ep->emss)) 254 goto err_cancel_table; 255 256 if (!ep->parent_ep && rdma_nl_put_driver_u32(msg, "atid", 257 ep->atid)) 258 goto err_cancel_table; 259 } 260 nla_nest_end(msg, table_attr); 261 kfree(uep); 262 return 0; 263 264 err_cancel_table: 265 nla_nest_cancel(msg, table_attr); 266 err_free_uep: 267 kfree(uep); 268 return -EMSGSIZE; 269 } 270 271 static int fill_cq(struct sk_buff *msg, struct t4_cq *cq) 272 { 273 if (rdma_nl_put_driver_u32(msg, "cqid", cq->cqid)) 274 goto err; 275 if (rdma_nl_put_driver_u32(msg, "memsize", cq->memsize)) 276 goto err; 277 if (rdma_nl_put_driver_u32(msg, "size", cq->size)) 278 goto err; 279 if (rdma_nl_put_driver_u32(msg, "cidx", cq->cidx)) 280 goto err; 281 if (rdma_nl_put_driver_u32(msg, "cidx_inc", cq->cidx_inc)) 282 goto err; 283 if (rdma_nl_put_driver_u32(msg, "sw_cidx", cq->sw_cidx)) 284 goto err; 285 if (rdma_nl_put_driver_u32(msg, "sw_pidx", cq->sw_pidx)) 286 goto err; 287 if (rdma_nl_put_driver_u32(msg, "sw_in_use", cq->sw_in_use)) 288 goto err; 289 if (rdma_nl_put_driver_u32(msg, "vector", cq->vector)) 290 goto err; 291 if (rdma_nl_put_driver_u32(msg, "gen", cq->gen)) 292 goto err; 293 if (rdma_nl_put_driver_u32(msg, "error", cq->error)) 294 goto err; 295 if (rdma_nl_put_driver_u64_hex(msg, "bits_type_ts", 296 be64_to_cpu(cq->bits_type_ts))) 297 goto err; 298 if (rdma_nl_put_driver_u64_hex(msg, "flags", cq->flags)) 299 goto err; 300 301 return 0; 302 303 err: 304 return -EMSGSIZE; 305 } 306 307 static int fill_cqe(struct sk_buff *msg, struct t4_cqe *cqe, u16 idx, 308 const char *qstr) 309 { 310 if (rdma_nl_put_driver_u32(msg, qstr, idx)) 311 goto err; 312 if (rdma_nl_put_driver_u32_hex(msg, "header", 313 be32_to_cpu(cqe->header))) 314 goto err; 315 if (rdma_nl_put_driver_u32(msg, "len", be32_to_cpu(cqe->len))) 316 goto err; 317 if (rdma_nl_put_driver_u32_hex(msg, "wrid_hi", 318 be32_to_cpu(cqe->u.gen.wrid_hi))) 319 goto err; 320 if (rdma_nl_put_driver_u32_hex(msg, "wrid_low", 321 be32_to_cpu(cqe->u.gen.wrid_low))) 322 goto err; 323 if (rdma_nl_put_driver_u64_hex(msg, "bits_type_ts", 324 be64_to_cpu(cqe->bits_type_ts))) 325 goto err; 326 327 return 0; 328 329 err: 330 return -EMSGSIZE; 331 } 332 333 static int fill_hwcqes(struct sk_buff *msg, struct t4_cq *cq, 334 struct t4_cqe *cqes) 335 { 336 u16 idx; 337 338 idx = (cq->cidx > 0) ? cq->cidx - 1 : cq->size - 1; 339 if (fill_cqe(msg, cqes, idx, "hwcq_idx")) 340 goto err; 341 idx = cq->cidx; 342 if (fill_cqe(msg, cqes + 1, idx, "hwcq_idx")) 343 goto err; 344 345 return 0; 346 err: 347 return -EMSGSIZE; 348 } 349 350 static int fill_swcqes(struct sk_buff *msg, struct t4_cq *cq, 351 struct t4_cqe *cqes) 352 { 353 u16 idx; 354 355 if (!cq->sw_in_use) 356 return 0; 357 358 idx = cq->sw_cidx; 359 if (fill_cqe(msg, cqes, idx, "swcq_idx")) 360 goto err; 361 if (cq->sw_in_use == 1) 362 goto out; 363 idx = (cq->sw_pidx > 0) ? cq->sw_pidx - 1 : cq->size - 1; 364 if (fill_cqe(msg, cqes + 1, idx, "swcq_idx")) 365 goto err; 366 out: 367 return 0; 368 err: 369 return -EMSGSIZE; 370 } 371 372 int c4iw_fill_res_cq_entry(struct sk_buff *msg, struct ib_cq *ibcq) 373 { 374 struct c4iw_cq *chp = to_c4iw_cq(ibcq); 375 struct nlattr *table_attr; 376 struct t4_cqe hwcqes[2]; 377 struct t4_cqe swcqes[2]; 378 struct t4_cq cq; 379 u16 idx; 380 381 /* User cq state is not available, so don't dump user cqs */ 382 if (ibcq->uobject) 383 return 0; 384 385 table_attr = nla_nest_start_noflag(msg, RDMA_NLDEV_ATTR_DRIVER); 386 if (!table_attr) 387 goto err; 388 389 /* Get a consistent snapshot */ 390 spin_lock_irq(&chp->lock); 391 392 /* t4_cq struct */ 393 cq = chp->cq; 394 395 /* get 2 hw cqes: cidx-1, and cidx */ 396 idx = (cq.cidx > 0) ? cq.cidx - 1 : cq.size - 1; 397 hwcqes[0] = chp->cq.queue[idx]; 398 399 idx = cq.cidx; 400 hwcqes[1] = chp->cq.queue[idx]; 401 402 /* get first and last sw cqes */ 403 if (cq.sw_in_use) { 404 swcqes[0] = chp->cq.sw_queue[cq.sw_cidx]; 405 if (cq.sw_in_use > 1) { 406 idx = (cq.sw_pidx > 0) ? cq.sw_pidx - 1 : cq.size - 1; 407 swcqes[1] = chp->cq.sw_queue[idx]; 408 } 409 } 410 411 spin_unlock_irq(&chp->lock); 412 413 if (fill_cq(msg, &cq)) 414 goto err_cancel_table; 415 416 if (fill_swcqes(msg, &cq, swcqes)) 417 goto err_cancel_table; 418 419 if (fill_hwcqes(msg, &cq, hwcqes)) 420 goto err_cancel_table; 421 422 nla_nest_end(msg, table_attr); 423 return 0; 424 425 err_cancel_table: 426 nla_nest_cancel(msg, table_attr); 427 err: 428 return -EMSGSIZE; 429 } 430 431 int c4iw_fill_res_mr_entry(struct sk_buff *msg, struct ib_mr *ibmr) 432 { 433 struct c4iw_mr *mhp = to_c4iw_mr(ibmr); 434 struct c4iw_dev *dev = mhp->rhp; 435 u32 stag = mhp->attr.stag; 436 struct nlattr *table_attr; 437 struct fw_ri_tpte tpte; 438 int ret; 439 440 if (!stag) 441 return 0; 442 443 table_attr = nla_nest_start_noflag(msg, RDMA_NLDEV_ATTR_DRIVER); 444 if (!table_attr) 445 goto err; 446 447 ret = cxgb4_read_tpte(dev->rdev.lldi.ports[0], stag, (__be32 *)&tpte); 448 if (ret) { 449 dev_err(&dev->rdev.lldi.pdev->dev, 450 "%s cxgb4_read_tpte err %d\n", __func__, ret); 451 return 0; 452 } 453 454 if (rdma_nl_put_driver_u32_hex(msg, "idx", stag >> 8)) 455 goto err_cancel_table; 456 if (rdma_nl_put_driver_u32(msg, "valid", 457 FW_RI_TPTE_VALID_G(ntohl(tpte.valid_to_pdid)))) 458 goto err_cancel_table; 459 if (rdma_nl_put_driver_u32_hex(msg, "key", stag & 0xff)) 460 goto err_cancel_table; 461 if (rdma_nl_put_driver_u32(msg, "state", 462 FW_RI_TPTE_STAGSTATE_G(ntohl(tpte.valid_to_pdid)))) 463 goto err_cancel_table; 464 if (rdma_nl_put_driver_u32(msg, "pdid", 465 FW_RI_TPTE_PDID_G(ntohl(tpte.valid_to_pdid)))) 466 goto err_cancel_table; 467 if (rdma_nl_put_driver_u32_hex(msg, "perm", 468 FW_RI_TPTE_PERM_G(ntohl(tpte.locread_to_qpid)))) 469 goto err_cancel_table; 470 if (rdma_nl_put_driver_u32(msg, "ps", 471 FW_RI_TPTE_PS_G(ntohl(tpte.locread_to_qpid)))) 472 goto err_cancel_table; 473 if (rdma_nl_put_driver_u64(msg, "len", 474 ((u64)ntohl(tpte.len_hi) << 32) | ntohl(tpte.len_lo))) 475 goto err_cancel_table; 476 if (rdma_nl_put_driver_u32_hex(msg, "pbl_addr", 477 FW_RI_TPTE_PBLADDR_G(ntohl(tpte.nosnoop_pbladdr)))) 478 goto err_cancel_table; 479 480 nla_nest_end(msg, table_attr); 481 return 0; 482 483 err_cancel_table: 484 nla_nest_cancel(msg, table_attr); 485 err: 486 return -EMSGSIZE; 487 } 488