11da177e4SLinus Torvalds /* 21da177e4SLinus Torvalds * Copyright (c) 2004 Mellanox Technologies Ltd. All rights reserved. 31da177e4SLinus Torvalds * Copyright (c) 2004 Infinicon Corporation. All rights reserved. 41da177e4SLinus Torvalds * Copyright (c) 2004 Intel Corporation. All rights reserved. 51da177e4SLinus Torvalds * Copyright (c) 2004 Topspin Corporation. All rights reserved. 61da177e4SLinus Torvalds * Copyright (c) 2004 Voltaire Corporation. All rights reserved. 72a1d9b7fSRoland Dreier * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved. 833b9b3eeSRoland Dreier * Copyright (c) 2005, 2006 Cisco Systems. All rights reserved. 91da177e4SLinus Torvalds * 101da177e4SLinus Torvalds * This software is available to you under a choice of one of two 111da177e4SLinus Torvalds * licenses. You may choose to be licensed under the terms of the GNU 121da177e4SLinus Torvalds * General Public License (GPL) Version 2, available from the file 131da177e4SLinus Torvalds * COPYING in the main directory of this source tree, or the 141da177e4SLinus Torvalds * OpenIB.org BSD license below: 151da177e4SLinus Torvalds * 161da177e4SLinus Torvalds * Redistribution and use in source and binary forms, with or 171da177e4SLinus Torvalds * without modification, are permitted provided that the following 181da177e4SLinus Torvalds * conditions are met: 191da177e4SLinus Torvalds * 201da177e4SLinus Torvalds * - Redistributions of source code must retain the above 211da177e4SLinus Torvalds * copyright notice, this list of conditions and the following 221da177e4SLinus Torvalds * disclaimer. 231da177e4SLinus Torvalds * 241da177e4SLinus Torvalds * - Redistributions in binary form must reproduce the above 251da177e4SLinus Torvalds * copyright notice, this list of conditions and the following 261da177e4SLinus Torvalds * disclaimer in the documentation and/or other materials 271da177e4SLinus Torvalds * provided with the distribution. 281da177e4SLinus Torvalds * 291da177e4SLinus Torvalds * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 301da177e4SLinus Torvalds * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 311da177e4SLinus Torvalds * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 321da177e4SLinus Torvalds * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 331da177e4SLinus Torvalds * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 341da177e4SLinus Torvalds * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 351da177e4SLinus Torvalds * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 361da177e4SLinus Torvalds * SOFTWARE. 371da177e4SLinus Torvalds */ 381da177e4SLinus Torvalds 391da177e4SLinus Torvalds #include <linux/errno.h> 401da177e4SLinus Torvalds #include <linux/err.h> 41b108d976SPaul Gortmaker #include <linux/export.h> 428c65b4a6STim Schmielau #include <linux/string.h> 430e0ec7e0SSean Hefty #include <linux/slab.h> 44dbf727deSMatan Barak #include <linux/in.h> 45dbf727deSMatan Barak #include <linux/in6.h> 46dbf727deSMatan Barak #include <net/addrconf.h> 47d291f1a6SDaniel Jurgens #include <linux/security.h> 481da177e4SLinus Torvalds 49a4d61e84SRoland Dreier #include <rdma/ib_verbs.h> 50a4d61e84SRoland Dreier #include <rdma/ib_cache.h> 51dd5f03beSMatan Barak #include <rdma/ib_addr.h> 52a060b562SChristoph Hellwig #include <rdma/rw.h> 531da177e4SLinus Torvalds 54ed4c54e5SOr Gerlitz #include "core_priv.h" 551da177e4SLinus Torvalds 562b1b5b60SSagi Grimberg static const char * const ib_events[] = { 572b1b5b60SSagi Grimberg [IB_EVENT_CQ_ERR] = "CQ error", 582b1b5b60SSagi Grimberg [IB_EVENT_QP_FATAL] = "QP fatal error", 592b1b5b60SSagi Grimberg [IB_EVENT_QP_REQ_ERR] = "QP request error", 602b1b5b60SSagi Grimberg [IB_EVENT_QP_ACCESS_ERR] = "QP access error", 612b1b5b60SSagi Grimberg [IB_EVENT_COMM_EST] = "communication established", 622b1b5b60SSagi Grimberg [IB_EVENT_SQ_DRAINED] = "send queue drained", 632b1b5b60SSagi Grimberg [IB_EVENT_PATH_MIG] = "path migration successful", 642b1b5b60SSagi Grimberg [IB_EVENT_PATH_MIG_ERR] = "path migration error", 652b1b5b60SSagi Grimberg [IB_EVENT_DEVICE_FATAL] = "device fatal error", 662b1b5b60SSagi Grimberg [IB_EVENT_PORT_ACTIVE] = "port active", 672b1b5b60SSagi Grimberg [IB_EVENT_PORT_ERR] = "port error", 682b1b5b60SSagi Grimberg [IB_EVENT_LID_CHANGE] = "LID change", 692b1b5b60SSagi Grimberg [IB_EVENT_PKEY_CHANGE] = "P_key change", 702b1b5b60SSagi Grimberg [IB_EVENT_SM_CHANGE] = "SM change", 712b1b5b60SSagi Grimberg [IB_EVENT_SRQ_ERR] = "SRQ error", 722b1b5b60SSagi Grimberg [IB_EVENT_SRQ_LIMIT_REACHED] = "SRQ limit reached", 732b1b5b60SSagi Grimberg [IB_EVENT_QP_LAST_WQE_REACHED] = "last WQE reached", 742b1b5b60SSagi Grimberg [IB_EVENT_CLIENT_REREGISTER] = "client reregister", 752b1b5b60SSagi Grimberg [IB_EVENT_GID_CHANGE] = "GID changed", 762b1b5b60SSagi Grimberg }; 772b1b5b60SSagi Grimberg 78db7489e0SBart Van Assche const char *__attribute_const__ ib_event_msg(enum ib_event_type event) 792b1b5b60SSagi Grimberg { 802b1b5b60SSagi Grimberg size_t index = event; 812b1b5b60SSagi Grimberg 822b1b5b60SSagi Grimberg return (index < ARRAY_SIZE(ib_events) && ib_events[index]) ? 832b1b5b60SSagi Grimberg ib_events[index] : "unrecognized event"; 842b1b5b60SSagi Grimberg } 852b1b5b60SSagi Grimberg EXPORT_SYMBOL(ib_event_msg); 862b1b5b60SSagi Grimberg 872b1b5b60SSagi Grimberg static const char * const wc_statuses[] = { 882b1b5b60SSagi Grimberg [IB_WC_SUCCESS] = "success", 892b1b5b60SSagi Grimberg [IB_WC_LOC_LEN_ERR] = "local length error", 902b1b5b60SSagi Grimberg [IB_WC_LOC_QP_OP_ERR] = "local QP operation error", 912b1b5b60SSagi Grimberg [IB_WC_LOC_EEC_OP_ERR] = "local EE context operation error", 922b1b5b60SSagi Grimberg [IB_WC_LOC_PROT_ERR] = "local protection error", 932b1b5b60SSagi Grimberg [IB_WC_WR_FLUSH_ERR] = "WR flushed", 942b1b5b60SSagi Grimberg [IB_WC_MW_BIND_ERR] = "memory management operation error", 952b1b5b60SSagi Grimberg [IB_WC_BAD_RESP_ERR] = "bad response error", 962b1b5b60SSagi Grimberg [IB_WC_LOC_ACCESS_ERR] = "local access error", 972b1b5b60SSagi Grimberg [IB_WC_REM_INV_REQ_ERR] = "invalid request error", 982b1b5b60SSagi Grimberg [IB_WC_REM_ACCESS_ERR] = "remote access error", 992b1b5b60SSagi Grimberg [IB_WC_REM_OP_ERR] = "remote operation error", 1002b1b5b60SSagi Grimberg [IB_WC_RETRY_EXC_ERR] = "transport retry counter exceeded", 1012b1b5b60SSagi Grimberg [IB_WC_RNR_RETRY_EXC_ERR] = "RNR retry counter exceeded", 1022b1b5b60SSagi Grimberg [IB_WC_LOC_RDD_VIOL_ERR] = "local RDD violation error", 1032b1b5b60SSagi Grimberg [IB_WC_REM_INV_RD_REQ_ERR] = "remote invalid RD request", 1042b1b5b60SSagi Grimberg [IB_WC_REM_ABORT_ERR] = "operation aborted", 1052b1b5b60SSagi Grimberg [IB_WC_INV_EECN_ERR] = "invalid EE context number", 1062b1b5b60SSagi Grimberg [IB_WC_INV_EEC_STATE_ERR] = "invalid EE context state", 1072b1b5b60SSagi Grimberg [IB_WC_FATAL_ERR] = "fatal error", 1082b1b5b60SSagi Grimberg [IB_WC_RESP_TIMEOUT_ERR] = "response timeout error", 1092b1b5b60SSagi Grimberg [IB_WC_GENERAL_ERR] = "general error", 1102b1b5b60SSagi Grimberg }; 1112b1b5b60SSagi Grimberg 112db7489e0SBart Van Assche const char *__attribute_const__ ib_wc_status_msg(enum ib_wc_status status) 1132b1b5b60SSagi Grimberg { 1142b1b5b60SSagi Grimberg size_t index = status; 1152b1b5b60SSagi Grimberg 1162b1b5b60SSagi Grimberg return (index < ARRAY_SIZE(wc_statuses) && wc_statuses[index]) ? 1172b1b5b60SSagi Grimberg wc_statuses[index] : "unrecognized status"; 1182b1b5b60SSagi Grimberg } 1192b1b5b60SSagi Grimberg EXPORT_SYMBOL(ib_wc_status_msg); 1202b1b5b60SSagi Grimberg 1218385fd84SRoland Dreier __attribute_const__ int ib_rate_to_mult(enum ib_rate rate) 122bf6a9e31SJack Morgenstein { 123bf6a9e31SJack Morgenstein switch (rate) { 124bf6a9e31SJack Morgenstein case IB_RATE_2_5_GBPS: return 1; 125bf6a9e31SJack Morgenstein case IB_RATE_5_GBPS: return 2; 126bf6a9e31SJack Morgenstein case IB_RATE_10_GBPS: return 4; 127bf6a9e31SJack Morgenstein case IB_RATE_20_GBPS: return 8; 128bf6a9e31SJack Morgenstein case IB_RATE_30_GBPS: return 12; 129bf6a9e31SJack Morgenstein case IB_RATE_40_GBPS: return 16; 130bf6a9e31SJack Morgenstein case IB_RATE_60_GBPS: return 24; 131bf6a9e31SJack Morgenstein case IB_RATE_80_GBPS: return 32; 132bf6a9e31SJack Morgenstein case IB_RATE_120_GBPS: return 48; 133bf6a9e31SJack Morgenstein default: return -1; 134bf6a9e31SJack Morgenstein } 135bf6a9e31SJack Morgenstein } 136bf6a9e31SJack Morgenstein EXPORT_SYMBOL(ib_rate_to_mult); 137bf6a9e31SJack Morgenstein 1388385fd84SRoland Dreier __attribute_const__ enum ib_rate mult_to_ib_rate(int mult) 139bf6a9e31SJack Morgenstein { 140bf6a9e31SJack Morgenstein switch (mult) { 141bf6a9e31SJack Morgenstein case 1: return IB_RATE_2_5_GBPS; 142bf6a9e31SJack Morgenstein case 2: return IB_RATE_5_GBPS; 143bf6a9e31SJack Morgenstein case 4: return IB_RATE_10_GBPS; 144bf6a9e31SJack Morgenstein case 8: return IB_RATE_20_GBPS; 145bf6a9e31SJack Morgenstein case 12: return IB_RATE_30_GBPS; 146bf6a9e31SJack Morgenstein case 16: return IB_RATE_40_GBPS; 147bf6a9e31SJack Morgenstein case 24: return IB_RATE_60_GBPS; 148bf6a9e31SJack Morgenstein case 32: return IB_RATE_80_GBPS; 149bf6a9e31SJack Morgenstein case 48: return IB_RATE_120_GBPS; 150bf6a9e31SJack Morgenstein default: return IB_RATE_PORT_CURRENT; 151bf6a9e31SJack Morgenstein } 152bf6a9e31SJack Morgenstein } 153bf6a9e31SJack Morgenstein EXPORT_SYMBOL(mult_to_ib_rate); 154bf6a9e31SJack Morgenstein 1558385fd84SRoland Dreier __attribute_const__ int ib_rate_to_mbps(enum ib_rate rate) 15671eeba16SMarcel Apfelbaum { 15771eeba16SMarcel Apfelbaum switch (rate) { 15871eeba16SMarcel Apfelbaum case IB_RATE_2_5_GBPS: return 2500; 15971eeba16SMarcel Apfelbaum case IB_RATE_5_GBPS: return 5000; 16071eeba16SMarcel Apfelbaum case IB_RATE_10_GBPS: return 10000; 16171eeba16SMarcel Apfelbaum case IB_RATE_20_GBPS: return 20000; 16271eeba16SMarcel Apfelbaum case IB_RATE_30_GBPS: return 30000; 16371eeba16SMarcel Apfelbaum case IB_RATE_40_GBPS: return 40000; 16471eeba16SMarcel Apfelbaum case IB_RATE_60_GBPS: return 60000; 16571eeba16SMarcel Apfelbaum case IB_RATE_80_GBPS: return 80000; 16671eeba16SMarcel Apfelbaum case IB_RATE_120_GBPS: return 120000; 16771eeba16SMarcel Apfelbaum case IB_RATE_14_GBPS: return 14062; 16871eeba16SMarcel Apfelbaum case IB_RATE_56_GBPS: return 56250; 16971eeba16SMarcel Apfelbaum case IB_RATE_112_GBPS: return 112500; 17071eeba16SMarcel Apfelbaum case IB_RATE_168_GBPS: return 168750; 17171eeba16SMarcel Apfelbaum case IB_RATE_25_GBPS: return 25781; 17271eeba16SMarcel Apfelbaum case IB_RATE_100_GBPS: return 103125; 17371eeba16SMarcel Apfelbaum case IB_RATE_200_GBPS: return 206250; 17471eeba16SMarcel Apfelbaum case IB_RATE_300_GBPS: return 309375; 17571eeba16SMarcel Apfelbaum default: return -1; 17671eeba16SMarcel Apfelbaum } 17771eeba16SMarcel Apfelbaum } 17871eeba16SMarcel Apfelbaum EXPORT_SYMBOL(ib_rate_to_mbps); 17971eeba16SMarcel Apfelbaum 1808385fd84SRoland Dreier __attribute_const__ enum rdma_transport_type 18107ebafbaSTom Tucker rdma_node_get_transport(enum rdma_node_type node_type) 18207ebafbaSTom Tucker { 183cdc596d8SLeon Romanovsky 184cdc596d8SLeon Romanovsky if (node_type == RDMA_NODE_USNIC) 1855db5765eSUpinder Malhi return RDMA_TRANSPORT_USNIC; 186cdc596d8SLeon Romanovsky if (node_type == RDMA_NODE_USNIC_UDP) 187248567f7SUpinder Malhi return RDMA_TRANSPORT_USNIC_UDP; 188cdc596d8SLeon Romanovsky if (node_type == RDMA_NODE_RNIC) 189cdc596d8SLeon Romanovsky return RDMA_TRANSPORT_IWARP; 190cdc596d8SLeon Romanovsky 191cdc596d8SLeon Romanovsky return RDMA_TRANSPORT_IB; 19207ebafbaSTom Tucker } 19307ebafbaSTom Tucker EXPORT_SYMBOL(rdma_node_get_transport); 19407ebafbaSTom Tucker 195a3f5adafSEli Cohen enum rdma_link_layer rdma_port_get_link_layer(struct ib_device *device, u8 port_num) 196a3f5adafSEli Cohen { 19782901e3eSLeon Romanovsky enum rdma_transport_type lt; 198a3f5adafSEli Cohen if (device->get_link_layer) 199a3f5adafSEli Cohen return device->get_link_layer(device, port_num); 200a3f5adafSEli Cohen 20182901e3eSLeon Romanovsky lt = rdma_node_get_transport(device->node_type); 20282901e3eSLeon Romanovsky if (lt == RDMA_TRANSPORT_IB) 203a3f5adafSEli Cohen return IB_LINK_LAYER_INFINIBAND; 20482901e3eSLeon Romanovsky 205a3f5adafSEli Cohen return IB_LINK_LAYER_ETHERNET; 206a3f5adafSEli Cohen } 207a3f5adafSEli Cohen EXPORT_SYMBOL(rdma_port_get_link_layer); 208a3f5adafSEli Cohen 2091da177e4SLinus Torvalds /* Protection domains */ 2101da177e4SLinus Torvalds 21196249d70SJason Gunthorpe /** 21296249d70SJason Gunthorpe * ib_alloc_pd - Allocates an unused protection domain. 21396249d70SJason Gunthorpe * @device: The device on which to allocate the protection domain. 21496249d70SJason Gunthorpe * 21596249d70SJason Gunthorpe * A protection domain object provides an association between QPs, shared 21696249d70SJason Gunthorpe * receive queues, address handles, memory regions, and memory windows. 21796249d70SJason Gunthorpe * 21896249d70SJason Gunthorpe * Every PD has a local_dma_lkey which can be used as the lkey value for local 21996249d70SJason Gunthorpe * memory operations. 22096249d70SJason Gunthorpe */ 221ed082d36SChristoph Hellwig struct ib_pd *__ib_alloc_pd(struct ib_device *device, unsigned int flags, 222ed082d36SChristoph Hellwig const char *caller) 2231da177e4SLinus Torvalds { 2241da177e4SLinus Torvalds struct ib_pd *pd; 225ed082d36SChristoph Hellwig int mr_access_flags = 0; 2261da177e4SLinus Torvalds 227b5e81bf5SRoland Dreier pd = device->alloc_pd(device, NULL, NULL); 22896249d70SJason Gunthorpe if (IS_ERR(pd)) 22996249d70SJason Gunthorpe return pd; 2301da177e4SLinus Torvalds 2311da177e4SLinus Torvalds pd->device = device; 232b5e81bf5SRoland Dreier pd->uobject = NULL; 23350d46335SChristoph Hellwig pd->__internal_mr = NULL; 2341da177e4SLinus Torvalds atomic_set(&pd->usecnt, 0); 235ed082d36SChristoph Hellwig pd->flags = flags; 23696249d70SJason Gunthorpe 23786bee4c9SOr Gerlitz if (device->attrs.device_cap_flags & IB_DEVICE_LOCAL_DMA_LKEY) 23896249d70SJason Gunthorpe pd->local_dma_lkey = device->local_dma_lkey; 239ed082d36SChristoph Hellwig else 240ed082d36SChristoph Hellwig mr_access_flags |= IB_ACCESS_LOCAL_WRITE; 241ed082d36SChristoph Hellwig 242ed082d36SChristoph Hellwig if (flags & IB_PD_UNSAFE_GLOBAL_RKEY) { 243ed082d36SChristoph Hellwig pr_warn("%s: enabling unsafe global rkey\n", caller); 244ed082d36SChristoph Hellwig mr_access_flags |= IB_ACCESS_REMOTE_READ | IB_ACCESS_REMOTE_WRITE; 245ed082d36SChristoph Hellwig } 246ed082d36SChristoph Hellwig 247ed082d36SChristoph Hellwig if (mr_access_flags) { 24896249d70SJason Gunthorpe struct ib_mr *mr; 24996249d70SJason Gunthorpe 2505ef990f0SChristoph Hellwig mr = pd->device->get_dma_mr(pd, mr_access_flags); 25196249d70SJason Gunthorpe if (IS_ERR(mr)) { 25296249d70SJason Gunthorpe ib_dealloc_pd(pd); 2535ef990f0SChristoph Hellwig return ERR_CAST(mr); 2541da177e4SLinus Torvalds } 2551da177e4SLinus Torvalds 2565ef990f0SChristoph Hellwig mr->device = pd->device; 2575ef990f0SChristoph Hellwig mr->pd = pd; 2585ef990f0SChristoph Hellwig mr->uobject = NULL; 2595ef990f0SChristoph Hellwig mr->need_inval = false; 2605ef990f0SChristoph Hellwig 26150d46335SChristoph Hellwig pd->__internal_mr = mr; 262ed082d36SChristoph Hellwig 263ed082d36SChristoph Hellwig if (!(device->attrs.device_cap_flags & IB_DEVICE_LOCAL_DMA_LKEY)) 26450d46335SChristoph Hellwig pd->local_dma_lkey = pd->__internal_mr->lkey; 265ed082d36SChristoph Hellwig 266ed082d36SChristoph Hellwig if (flags & IB_PD_UNSAFE_GLOBAL_RKEY) 267ed082d36SChristoph Hellwig pd->unsafe_global_rkey = pd->__internal_mr->rkey; 26896249d70SJason Gunthorpe } 269ed082d36SChristoph Hellwig 2701da177e4SLinus Torvalds return pd; 2711da177e4SLinus Torvalds } 272ed082d36SChristoph Hellwig EXPORT_SYMBOL(__ib_alloc_pd); 2731da177e4SLinus Torvalds 2747dd78647SJason Gunthorpe /** 2757dd78647SJason Gunthorpe * ib_dealloc_pd - Deallocates a protection domain. 2767dd78647SJason Gunthorpe * @pd: The protection domain to deallocate. 2777dd78647SJason Gunthorpe * 2787dd78647SJason Gunthorpe * It is an error to call this function while any resources in the pd still 2797dd78647SJason Gunthorpe * exist. The caller is responsible to synchronously destroy them and 2807dd78647SJason Gunthorpe * guarantee no new allocations will happen. 2817dd78647SJason Gunthorpe */ 2827dd78647SJason Gunthorpe void ib_dealloc_pd(struct ib_pd *pd) 2831da177e4SLinus Torvalds { 2847dd78647SJason Gunthorpe int ret; 2851da177e4SLinus Torvalds 28650d46335SChristoph Hellwig if (pd->__internal_mr) { 2875ef990f0SChristoph Hellwig ret = pd->device->dereg_mr(pd->__internal_mr); 2887dd78647SJason Gunthorpe WARN_ON(ret); 28950d46335SChristoph Hellwig pd->__internal_mr = NULL; 29096249d70SJason Gunthorpe } 29196249d70SJason Gunthorpe 2927dd78647SJason Gunthorpe /* uverbs manipulates usecnt with proper locking, while the kabi 2937dd78647SJason Gunthorpe requires the caller to guarantee we can't race here. */ 2947dd78647SJason Gunthorpe WARN_ON(atomic_read(&pd->usecnt)); 2951da177e4SLinus Torvalds 2967dd78647SJason Gunthorpe /* Making delalloc_pd a void return is a WIP, no driver should return 2977dd78647SJason Gunthorpe an error here. */ 2987dd78647SJason Gunthorpe ret = pd->device->dealloc_pd(pd); 2997dd78647SJason Gunthorpe WARN_ONCE(ret, "Infiniband HW driver failed dealloc_pd"); 3001da177e4SLinus Torvalds } 3011da177e4SLinus Torvalds EXPORT_SYMBOL(ib_dealloc_pd); 3021da177e4SLinus Torvalds 3031da177e4SLinus Torvalds /* Address handles */ 3041da177e4SLinus Torvalds 3050a18cfe4SDasaratharaman Chandramouli struct ib_ah *rdma_create_ah(struct ib_pd *pd, struct rdma_ah_attr *ah_attr) 3061da177e4SLinus Torvalds { 3071da177e4SLinus Torvalds struct ib_ah *ah; 3081da177e4SLinus Torvalds 309477864c8SMoni Shoua ah = pd->device->create_ah(pd, ah_attr, NULL); 3101da177e4SLinus Torvalds 3111da177e4SLinus Torvalds if (!IS_ERR(ah)) { 3121da177e4SLinus Torvalds ah->device = pd->device; 3131da177e4SLinus Torvalds ah->pd = pd; 314b5e81bf5SRoland Dreier ah->uobject = NULL; 31544c58487SDasaratharaman Chandramouli ah->type = ah_attr->type; 3161da177e4SLinus Torvalds atomic_inc(&pd->usecnt); 3171da177e4SLinus Torvalds } 3181da177e4SLinus Torvalds 3191da177e4SLinus Torvalds return ah; 3201da177e4SLinus Torvalds } 3210a18cfe4SDasaratharaman Chandramouli EXPORT_SYMBOL(rdma_create_ah); 3221da177e4SLinus Torvalds 323850d8fd7SMoni Shoua int ib_get_rdma_header_version(const union rdma_network_hdr *hdr) 324c865f246SSomnath Kotur { 325c865f246SSomnath Kotur const struct iphdr *ip4h = (struct iphdr *)&hdr->roce4grh; 326c865f246SSomnath Kotur struct iphdr ip4h_checked; 327c865f246SSomnath Kotur const struct ipv6hdr *ip6h = (struct ipv6hdr *)&hdr->ibgrh; 328c865f246SSomnath Kotur 329c865f246SSomnath Kotur /* If it's IPv6, the version must be 6, otherwise, the first 330c865f246SSomnath Kotur * 20 bytes (before the IPv4 header) are garbled. 331c865f246SSomnath Kotur */ 332c865f246SSomnath Kotur if (ip6h->version != 6) 333c865f246SSomnath Kotur return (ip4h->version == 4) ? 4 : 0; 334c865f246SSomnath Kotur /* version may be 6 or 4 because the first 20 bytes could be garbled */ 335c865f246SSomnath Kotur 336c865f246SSomnath Kotur /* RoCE v2 requires no options, thus header length 337c865f246SSomnath Kotur * must be 5 words 338c865f246SSomnath Kotur */ 339c865f246SSomnath Kotur if (ip4h->ihl != 5) 340c865f246SSomnath Kotur return 6; 341c865f246SSomnath Kotur 342c865f246SSomnath Kotur /* Verify checksum. 343c865f246SSomnath Kotur * We can't write on scattered buffers so we need to copy to 344c865f246SSomnath Kotur * temp buffer. 345c865f246SSomnath Kotur */ 346c865f246SSomnath Kotur memcpy(&ip4h_checked, ip4h, sizeof(ip4h_checked)); 347c865f246SSomnath Kotur ip4h_checked.check = 0; 348c865f246SSomnath Kotur ip4h_checked.check = ip_fast_csum((u8 *)&ip4h_checked, 5); 349c865f246SSomnath Kotur /* if IPv4 header checksum is OK, believe it */ 350c865f246SSomnath Kotur if (ip4h->check == ip4h_checked.check) 351c865f246SSomnath Kotur return 4; 352c865f246SSomnath Kotur return 6; 353c865f246SSomnath Kotur } 354850d8fd7SMoni Shoua EXPORT_SYMBOL(ib_get_rdma_header_version); 355c865f246SSomnath Kotur 356c865f246SSomnath Kotur static enum rdma_network_type ib_get_net_type_by_grh(struct ib_device *device, 357c865f246SSomnath Kotur u8 port_num, 358c865f246SSomnath Kotur const struct ib_grh *grh) 359c865f246SSomnath Kotur { 360c865f246SSomnath Kotur int grh_version; 361c865f246SSomnath Kotur 362c865f246SSomnath Kotur if (rdma_protocol_ib(device, port_num)) 363c865f246SSomnath Kotur return RDMA_NETWORK_IB; 364c865f246SSomnath Kotur 365850d8fd7SMoni Shoua grh_version = ib_get_rdma_header_version((union rdma_network_hdr *)grh); 366c865f246SSomnath Kotur 367c865f246SSomnath Kotur if (grh_version == 4) 368c865f246SSomnath Kotur return RDMA_NETWORK_IPV4; 369c865f246SSomnath Kotur 370c865f246SSomnath Kotur if (grh->next_hdr == IPPROTO_UDP) 371c865f246SSomnath Kotur return RDMA_NETWORK_IPV6; 372c865f246SSomnath Kotur 373c865f246SSomnath Kotur return RDMA_NETWORK_ROCE_V1; 374c865f246SSomnath Kotur } 375c865f246SSomnath Kotur 376dbf727deSMatan Barak struct find_gid_index_context { 377dbf727deSMatan Barak u16 vlan_id; 378c865f246SSomnath Kotur enum ib_gid_type gid_type; 379dbf727deSMatan Barak }; 380dbf727deSMatan Barak 381dbf727deSMatan Barak static bool find_gid_index(const union ib_gid *gid, 382dbf727deSMatan Barak const struct ib_gid_attr *gid_attr, 383dbf727deSMatan Barak void *context) 384dbf727deSMatan Barak { 385dbf727deSMatan Barak struct find_gid_index_context *ctx = 386dbf727deSMatan Barak (struct find_gid_index_context *)context; 387dbf727deSMatan Barak 388c865f246SSomnath Kotur if (ctx->gid_type != gid_attr->gid_type) 389c865f246SSomnath Kotur return false; 390c865f246SSomnath Kotur 391dbf727deSMatan Barak if ((!!(ctx->vlan_id != 0xffff) == !is_vlan_dev(gid_attr->ndev)) || 392dbf727deSMatan Barak (is_vlan_dev(gid_attr->ndev) && 393dbf727deSMatan Barak vlan_dev_vlan_id(gid_attr->ndev) != ctx->vlan_id)) 394dbf727deSMatan Barak return false; 395dbf727deSMatan Barak 396dbf727deSMatan Barak return true; 397dbf727deSMatan Barak } 398dbf727deSMatan Barak 399dbf727deSMatan Barak static int get_sgid_index_from_eth(struct ib_device *device, u8 port_num, 400dbf727deSMatan Barak u16 vlan_id, const union ib_gid *sgid, 401c865f246SSomnath Kotur enum ib_gid_type gid_type, 402dbf727deSMatan Barak u16 *gid_index) 403dbf727deSMatan Barak { 404c865f246SSomnath Kotur struct find_gid_index_context context = {.vlan_id = vlan_id, 405c865f246SSomnath Kotur .gid_type = gid_type}; 406dbf727deSMatan Barak 407dbf727deSMatan Barak return ib_find_gid_by_filter(device, sgid, port_num, find_gid_index, 408dbf727deSMatan Barak &context, gid_index); 409dbf727deSMatan Barak } 410dbf727deSMatan Barak 411850d8fd7SMoni Shoua int ib_get_gids_from_rdma_hdr(const union rdma_network_hdr *hdr, 412c865f246SSomnath Kotur enum rdma_network_type net_type, 413c865f246SSomnath Kotur union ib_gid *sgid, union ib_gid *dgid) 414c865f246SSomnath Kotur { 415c865f246SSomnath Kotur struct sockaddr_in src_in; 416c865f246SSomnath Kotur struct sockaddr_in dst_in; 417c865f246SSomnath Kotur __be32 src_saddr, dst_saddr; 418c865f246SSomnath Kotur 419c865f246SSomnath Kotur if (!sgid || !dgid) 420c865f246SSomnath Kotur return -EINVAL; 421c865f246SSomnath Kotur 422c865f246SSomnath Kotur if (net_type == RDMA_NETWORK_IPV4) { 423c865f246SSomnath Kotur memcpy(&src_in.sin_addr.s_addr, 424c865f246SSomnath Kotur &hdr->roce4grh.saddr, 4); 425c865f246SSomnath Kotur memcpy(&dst_in.sin_addr.s_addr, 426c865f246SSomnath Kotur &hdr->roce4grh.daddr, 4); 427c865f246SSomnath Kotur src_saddr = src_in.sin_addr.s_addr; 428c865f246SSomnath Kotur dst_saddr = dst_in.sin_addr.s_addr; 429c865f246SSomnath Kotur ipv6_addr_set_v4mapped(src_saddr, 430c865f246SSomnath Kotur (struct in6_addr *)sgid); 431c865f246SSomnath Kotur ipv6_addr_set_v4mapped(dst_saddr, 432c865f246SSomnath Kotur (struct in6_addr *)dgid); 433c865f246SSomnath Kotur return 0; 434c865f246SSomnath Kotur } else if (net_type == RDMA_NETWORK_IPV6 || 435c865f246SSomnath Kotur net_type == RDMA_NETWORK_IB) { 436c865f246SSomnath Kotur *dgid = hdr->ibgrh.dgid; 437c865f246SSomnath Kotur *sgid = hdr->ibgrh.sgid; 438c865f246SSomnath Kotur return 0; 439c865f246SSomnath Kotur } else { 440c865f246SSomnath Kotur return -EINVAL; 441c865f246SSomnath Kotur } 442c865f246SSomnath Kotur } 443850d8fd7SMoni Shoua EXPORT_SYMBOL(ib_get_gids_from_rdma_hdr); 444c865f246SSomnath Kotur 44528b5b3a2SGustavo A. R. Silva /* 44628b5b3a2SGustavo A. R. Silva * This function creates ah from the incoming packet. 44728b5b3a2SGustavo A. R. Silva * Incoming packet has dgid of the receiver node on which this code is 44828b5b3a2SGustavo A. R. Silva * getting executed and, sgid contains the GID of the sender. 44928b5b3a2SGustavo A. R. Silva * 45028b5b3a2SGustavo A. R. Silva * When resolving mac address of destination, the arrived dgid is used 45128b5b3a2SGustavo A. R. Silva * as sgid and, sgid is used as dgid because sgid contains destinations 45228b5b3a2SGustavo A. R. Silva * GID whom to respond to. 45328b5b3a2SGustavo A. R. Silva * 45428b5b3a2SGustavo A. R. Silva * This is why when calling rdma_addr_find_l2_eth_by_grh() function, the 45528b5b3a2SGustavo A. R. Silva * position of arguments dgid and sgid do not match the order of the 45628b5b3a2SGustavo A. R. Silva * parameters. 45728b5b3a2SGustavo A. R. Silva */ 45873cdaaeeSIra Weiny int ib_init_ah_from_wc(struct ib_device *device, u8 port_num, 45973cdaaeeSIra Weiny const struct ib_wc *wc, const struct ib_grh *grh, 46090898850SDasaratharaman Chandramouli struct rdma_ah_attr *ah_attr) 461513789edSHal Rosenstock { 462513789edSHal Rosenstock u32 flow_class; 463513789edSHal Rosenstock u16 gid_index; 464513789edSHal Rosenstock int ret; 465c865f246SSomnath Kotur enum rdma_network_type net_type = RDMA_NETWORK_IB; 466c865f246SSomnath Kotur enum ib_gid_type gid_type = IB_GID_TYPE_IB; 467c3efe750SMatan Barak int hoplimit = 0xff; 468c865f246SSomnath Kotur union ib_gid dgid; 469c865f246SSomnath Kotur union ib_gid sgid; 470513789edSHal Rosenstock 4714e00d694SSean Hefty memset(ah_attr, 0, sizeof *ah_attr); 47244c58487SDasaratharaman Chandramouli ah_attr->type = rdma_ah_find_type(device, port_num); 473227128fcSMichael Wang if (rdma_cap_eth_ah(device, port_num)) { 474c865f246SSomnath Kotur if (wc->wc_flags & IB_WC_WITH_NETWORK_HDR_TYPE) 475c865f246SSomnath Kotur net_type = wc->network_hdr_type; 476c865f246SSomnath Kotur else 477c865f246SSomnath Kotur net_type = ib_get_net_type_by_grh(device, port_num, grh); 478c865f246SSomnath Kotur gid_type = ib_network_to_gid_type(net_type); 479c865f246SSomnath Kotur } 480850d8fd7SMoni Shoua ret = ib_get_gids_from_rdma_hdr((union rdma_network_hdr *)grh, net_type, 481c865f246SSomnath Kotur &sgid, &dgid); 482c865f246SSomnath Kotur if (ret) 483c865f246SSomnath Kotur return ret; 484c865f246SSomnath Kotur 485c865f246SSomnath Kotur if (rdma_protocol_roce(device, port_num)) { 48620029832SMatan Barak int if_index = 0; 487dbf727deSMatan Barak u16 vlan_id = wc->wc_flags & IB_WC_WITH_VLAN ? 488dbf727deSMatan Barak wc->vlan_id : 0xffff; 48920029832SMatan Barak struct net_device *idev; 49020029832SMatan Barak struct net_device *resolved_dev; 491dbf727deSMatan Barak 492dd5f03beSMatan Barak if (!(wc->wc_flags & IB_WC_GRH)) 493dd5f03beSMatan Barak return -EPROTOTYPE; 494dd5f03beSMatan Barak 49520029832SMatan Barak if (!device->get_netdev) 49620029832SMatan Barak return -EOPNOTSUPP; 49720029832SMatan Barak 49820029832SMatan Barak idev = device->get_netdev(device, port_num); 49920029832SMatan Barak if (!idev) 50020029832SMatan Barak return -ENODEV; 50120029832SMatan Barak 502f7f4b23eSMatan Barak ret = rdma_addr_find_l2_eth_by_grh(&dgid, &sgid, 50344c58487SDasaratharaman Chandramouli ah_attr->roce.dmac, 504dbf727deSMatan Barak wc->wc_flags & IB_WC_WITH_VLAN ? 505dbf727deSMatan Barak NULL : &vlan_id, 506c3efe750SMatan Barak &if_index, &hoplimit); 50720029832SMatan Barak if (ret) { 50820029832SMatan Barak dev_put(idev); 509dd5f03beSMatan Barak return ret; 510dd5f03beSMatan Barak } 511dbf727deSMatan Barak 51220029832SMatan Barak resolved_dev = dev_get_by_index(&init_net, if_index); 51320029832SMatan Barak rcu_read_lock(); 51420029832SMatan Barak if (resolved_dev != idev && !rdma_is_upper_dev_rcu(idev, 51520029832SMatan Barak resolved_dev)) 51620029832SMatan Barak ret = -EHOSTUNREACH; 51720029832SMatan Barak rcu_read_unlock(); 51820029832SMatan Barak dev_put(idev); 51920029832SMatan Barak dev_put(resolved_dev); 52020029832SMatan Barak if (ret) 52120029832SMatan Barak return ret; 52220029832SMatan Barak 523dbf727deSMatan Barak ret = get_sgid_index_from_eth(device, port_num, vlan_id, 524c865f246SSomnath Kotur &dgid, gid_type, &gid_index); 525dbf727deSMatan Barak if (ret) 526dbf727deSMatan Barak return ret; 527dd5f03beSMatan Barak } 528dd5f03beSMatan Barak 529d8966fcdSDasaratharaman Chandramouli rdma_ah_set_dlid(ah_attr, wc->slid); 530d8966fcdSDasaratharaman Chandramouli rdma_ah_set_sl(ah_attr, wc->sl); 531d8966fcdSDasaratharaman Chandramouli rdma_ah_set_path_bits(ah_attr, wc->dlid_path_bits); 532d8966fcdSDasaratharaman Chandramouli rdma_ah_set_port_num(ah_attr, port_num); 533513789edSHal Rosenstock 534513789edSHal Rosenstock if (wc->wc_flags & IB_WC_GRH) { 535dbf727deSMatan Barak if (!rdma_cap_eth_ah(device, port_num)) { 536b3556005SEli Cohen if (dgid.global.interface_id != cpu_to_be64(IB_SA_WELL_KNOWN_GUID)) { 537c865f246SSomnath Kotur ret = ib_find_cached_gid_by_port(device, &dgid, 538b39ffa1dSMatan Barak IB_GID_TYPE_IB, 539dbf727deSMatan Barak port_num, NULL, 540dbf727deSMatan Barak &gid_index); 541513789edSHal Rosenstock if (ret) 5424e00d694SSean Hefty return ret; 543b3556005SEli Cohen } else { 544b3556005SEli Cohen gid_index = 0; 545b3556005SEli Cohen } 546dbf727deSMatan Barak } 547513789edSHal Rosenstock 548497677abSHal Rosenstock flow_class = be32_to_cpu(grh->version_tclass_flow); 549d8966fcdSDasaratharaman Chandramouli rdma_ah_set_grh(ah_attr, &sgid, 550d8966fcdSDasaratharaman Chandramouli flow_class & 0xFFFFF, 551d8966fcdSDasaratharaman Chandramouli (u8)gid_index, hoplimit, 552d8966fcdSDasaratharaman Chandramouli (flow_class >> 20) & 0xFF); 553d8966fcdSDasaratharaman Chandramouli 554513789edSHal Rosenstock } 5554e00d694SSean Hefty return 0; 5564e00d694SSean Hefty } 5574e00d694SSean Hefty EXPORT_SYMBOL(ib_init_ah_from_wc); 5584e00d694SSean Hefty 55973cdaaeeSIra Weiny struct ib_ah *ib_create_ah_from_wc(struct ib_pd *pd, const struct ib_wc *wc, 56073cdaaeeSIra Weiny const struct ib_grh *grh, u8 port_num) 5614e00d694SSean Hefty { 56290898850SDasaratharaman Chandramouli struct rdma_ah_attr ah_attr; 5634e00d694SSean Hefty int ret; 5644e00d694SSean Hefty 5654e00d694SSean Hefty ret = ib_init_ah_from_wc(pd->device, port_num, wc, grh, &ah_attr); 5664e00d694SSean Hefty if (ret) 5674e00d694SSean Hefty return ERR_PTR(ret); 568513789edSHal Rosenstock 5690a18cfe4SDasaratharaman Chandramouli return rdma_create_ah(pd, &ah_attr); 570513789edSHal Rosenstock } 571513789edSHal Rosenstock EXPORT_SYMBOL(ib_create_ah_from_wc); 572513789edSHal Rosenstock 57367b985b6SDasaratharaman Chandramouli int rdma_modify_ah(struct ib_ah *ah, struct rdma_ah_attr *ah_attr) 5741da177e4SLinus Torvalds { 57544c58487SDasaratharaman Chandramouli if (ah->type != ah_attr->type) 57644c58487SDasaratharaman Chandramouli return -EINVAL; 57744c58487SDasaratharaman Chandramouli 5781da177e4SLinus Torvalds return ah->device->modify_ah ? 5791da177e4SLinus Torvalds ah->device->modify_ah(ah, ah_attr) : 5801da177e4SLinus Torvalds -ENOSYS; 5811da177e4SLinus Torvalds } 58267b985b6SDasaratharaman Chandramouli EXPORT_SYMBOL(rdma_modify_ah); 5831da177e4SLinus Torvalds 584bfbfd661SDasaratharaman Chandramouli int rdma_query_ah(struct ib_ah *ah, struct rdma_ah_attr *ah_attr) 5851da177e4SLinus Torvalds { 5861da177e4SLinus Torvalds return ah->device->query_ah ? 5871da177e4SLinus Torvalds ah->device->query_ah(ah, ah_attr) : 5881da177e4SLinus Torvalds -ENOSYS; 5891da177e4SLinus Torvalds } 590bfbfd661SDasaratharaman Chandramouli EXPORT_SYMBOL(rdma_query_ah); 5911da177e4SLinus Torvalds 59236523159SDasaratharaman Chandramouli int rdma_destroy_ah(struct ib_ah *ah) 5931da177e4SLinus Torvalds { 5941da177e4SLinus Torvalds struct ib_pd *pd; 5951da177e4SLinus Torvalds int ret; 5961da177e4SLinus Torvalds 5971da177e4SLinus Torvalds pd = ah->pd; 5981da177e4SLinus Torvalds ret = ah->device->destroy_ah(ah); 5991da177e4SLinus Torvalds if (!ret) 6001da177e4SLinus Torvalds atomic_dec(&pd->usecnt); 6011da177e4SLinus Torvalds 6021da177e4SLinus Torvalds return ret; 6031da177e4SLinus Torvalds } 60436523159SDasaratharaman Chandramouli EXPORT_SYMBOL(rdma_destroy_ah); 6051da177e4SLinus Torvalds 606d41fcc67SRoland Dreier /* Shared receive queues */ 607d41fcc67SRoland Dreier 608d41fcc67SRoland Dreier struct ib_srq *ib_create_srq(struct ib_pd *pd, 609d41fcc67SRoland Dreier struct ib_srq_init_attr *srq_init_attr) 610d41fcc67SRoland Dreier { 611d41fcc67SRoland Dreier struct ib_srq *srq; 612d41fcc67SRoland Dreier 613d41fcc67SRoland Dreier if (!pd->device->create_srq) 614d41fcc67SRoland Dreier return ERR_PTR(-ENOSYS); 615d41fcc67SRoland Dreier 616d41fcc67SRoland Dreier srq = pd->device->create_srq(pd, srq_init_attr, NULL); 617d41fcc67SRoland Dreier 618d41fcc67SRoland Dreier if (!IS_ERR(srq)) { 619d41fcc67SRoland Dreier srq->device = pd->device; 620d41fcc67SRoland Dreier srq->pd = pd; 621d41fcc67SRoland Dreier srq->uobject = NULL; 622d41fcc67SRoland Dreier srq->event_handler = srq_init_attr->event_handler; 623d41fcc67SRoland Dreier srq->srq_context = srq_init_attr->srq_context; 62496104edaSSean Hefty srq->srq_type = srq_init_attr->srq_type; 625418d5130SSean Hefty if (srq->srq_type == IB_SRQT_XRC) { 626418d5130SSean Hefty srq->ext.xrc.xrcd = srq_init_attr->ext.xrc.xrcd; 627418d5130SSean Hefty srq->ext.xrc.cq = srq_init_attr->ext.xrc.cq; 628418d5130SSean Hefty atomic_inc(&srq->ext.xrc.xrcd->usecnt); 629418d5130SSean Hefty atomic_inc(&srq->ext.xrc.cq->usecnt); 630418d5130SSean Hefty } 631d41fcc67SRoland Dreier atomic_inc(&pd->usecnt); 632d41fcc67SRoland Dreier atomic_set(&srq->usecnt, 0); 633d41fcc67SRoland Dreier } 634d41fcc67SRoland Dreier 635d41fcc67SRoland Dreier return srq; 636d41fcc67SRoland Dreier } 637d41fcc67SRoland Dreier EXPORT_SYMBOL(ib_create_srq); 638d41fcc67SRoland Dreier 639d41fcc67SRoland Dreier int ib_modify_srq(struct ib_srq *srq, 640d41fcc67SRoland Dreier struct ib_srq_attr *srq_attr, 641d41fcc67SRoland Dreier enum ib_srq_attr_mask srq_attr_mask) 642d41fcc67SRoland Dreier { 6437ce5eacbSDotan Barak return srq->device->modify_srq ? 6447ce5eacbSDotan Barak srq->device->modify_srq(srq, srq_attr, srq_attr_mask, NULL) : 6457ce5eacbSDotan Barak -ENOSYS; 646d41fcc67SRoland Dreier } 647d41fcc67SRoland Dreier EXPORT_SYMBOL(ib_modify_srq); 648d41fcc67SRoland Dreier 649d41fcc67SRoland Dreier int ib_query_srq(struct ib_srq *srq, 650d41fcc67SRoland Dreier struct ib_srq_attr *srq_attr) 651d41fcc67SRoland Dreier { 652d41fcc67SRoland Dreier return srq->device->query_srq ? 653d41fcc67SRoland Dreier srq->device->query_srq(srq, srq_attr) : -ENOSYS; 654d41fcc67SRoland Dreier } 655d41fcc67SRoland Dreier EXPORT_SYMBOL(ib_query_srq); 656d41fcc67SRoland Dreier 657d41fcc67SRoland Dreier int ib_destroy_srq(struct ib_srq *srq) 658d41fcc67SRoland Dreier { 659d41fcc67SRoland Dreier struct ib_pd *pd; 660418d5130SSean Hefty enum ib_srq_type srq_type; 661418d5130SSean Hefty struct ib_xrcd *uninitialized_var(xrcd); 662418d5130SSean Hefty struct ib_cq *uninitialized_var(cq); 663d41fcc67SRoland Dreier int ret; 664d41fcc67SRoland Dreier 665d41fcc67SRoland Dreier if (atomic_read(&srq->usecnt)) 666d41fcc67SRoland Dreier return -EBUSY; 667d41fcc67SRoland Dreier 668d41fcc67SRoland Dreier pd = srq->pd; 669418d5130SSean Hefty srq_type = srq->srq_type; 670418d5130SSean Hefty if (srq_type == IB_SRQT_XRC) { 671418d5130SSean Hefty xrcd = srq->ext.xrc.xrcd; 672418d5130SSean Hefty cq = srq->ext.xrc.cq; 673418d5130SSean Hefty } 674d41fcc67SRoland Dreier 675d41fcc67SRoland Dreier ret = srq->device->destroy_srq(srq); 676418d5130SSean Hefty if (!ret) { 677d41fcc67SRoland Dreier atomic_dec(&pd->usecnt); 678418d5130SSean Hefty if (srq_type == IB_SRQT_XRC) { 679418d5130SSean Hefty atomic_dec(&xrcd->usecnt); 680418d5130SSean Hefty atomic_dec(&cq->usecnt); 681418d5130SSean Hefty } 682418d5130SSean Hefty } 683d41fcc67SRoland Dreier 684d41fcc67SRoland Dreier return ret; 685d41fcc67SRoland Dreier } 686d41fcc67SRoland Dreier EXPORT_SYMBOL(ib_destroy_srq); 687d41fcc67SRoland Dreier 6881da177e4SLinus Torvalds /* Queue pairs */ 6891da177e4SLinus Torvalds 6900e0ec7e0SSean Hefty static void __ib_shared_qp_event_handler(struct ib_event *event, void *context) 6910e0ec7e0SSean Hefty { 6920e0ec7e0SSean Hefty struct ib_qp *qp = context; 69373c40c61SYishai Hadas unsigned long flags; 6940e0ec7e0SSean Hefty 69573c40c61SYishai Hadas spin_lock_irqsave(&qp->device->event_handler_lock, flags); 6960e0ec7e0SSean Hefty list_for_each_entry(event->element.qp, &qp->open_list, open_list) 697eec9e29fSShlomo Pongratz if (event->element.qp->event_handler) 6980e0ec7e0SSean Hefty event->element.qp->event_handler(event, event->element.qp->qp_context); 69973c40c61SYishai Hadas spin_unlock_irqrestore(&qp->device->event_handler_lock, flags); 7000e0ec7e0SSean Hefty } 7010e0ec7e0SSean Hefty 702d3d72d90SSean Hefty static void __ib_insert_xrcd_qp(struct ib_xrcd *xrcd, struct ib_qp *qp) 703d3d72d90SSean Hefty { 704d3d72d90SSean Hefty mutex_lock(&xrcd->tgt_qp_mutex); 705d3d72d90SSean Hefty list_add(&qp->xrcd_list, &xrcd->tgt_qp_list); 706d3d72d90SSean Hefty mutex_unlock(&xrcd->tgt_qp_mutex); 707d3d72d90SSean Hefty } 708d3d72d90SSean Hefty 7090e0ec7e0SSean Hefty static struct ib_qp *__ib_open_qp(struct ib_qp *real_qp, 7100e0ec7e0SSean Hefty void (*event_handler)(struct ib_event *, void *), 7110e0ec7e0SSean Hefty void *qp_context) 712d3d72d90SSean Hefty { 7130e0ec7e0SSean Hefty struct ib_qp *qp; 7140e0ec7e0SSean Hefty unsigned long flags; 715d291f1a6SDaniel Jurgens int err; 7160e0ec7e0SSean Hefty 7170e0ec7e0SSean Hefty qp = kzalloc(sizeof *qp, GFP_KERNEL); 7180e0ec7e0SSean Hefty if (!qp) 7190e0ec7e0SSean Hefty return ERR_PTR(-ENOMEM); 7200e0ec7e0SSean Hefty 7210e0ec7e0SSean Hefty qp->real_qp = real_qp; 722d291f1a6SDaniel Jurgens err = ib_open_shared_qp_security(qp, real_qp->device); 723d291f1a6SDaniel Jurgens if (err) { 724d291f1a6SDaniel Jurgens kfree(qp); 725d291f1a6SDaniel Jurgens return ERR_PTR(err); 726d291f1a6SDaniel Jurgens } 727d291f1a6SDaniel Jurgens 728d291f1a6SDaniel Jurgens qp->real_qp = real_qp; 7290e0ec7e0SSean Hefty atomic_inc(&real_qp->usecnt); 7300e0ec7e0SSean Hefty qp->device = real_qp->device; 7310e0ec7e0SSean Hefty qp->event_handler = event_handler; 7320e0ec7e0SSean Hefty qp->qp_context = qp_context; 7330e0ec7e0SSean Hefty qp->qp_num = real_qp->qp_num; 7340e0ec7e0SSean Hefty qp->qp_type = real_qp->qp_type; 7350e0ec7e0SSean Hefty 7360e0ec7e0SSean Hefty spin_lock_irqsave(&real_qp->device->event_handler_lock, flags); 7370e0ec7e0SSean Hefty list_add(&qp->open_list, &real_qp->open_list); 7380e0ec7e0SSean Hefty spin_unlock_irqrestore(&real_qp->device->event_handler_lock, flags); 7390e0ec7e0SSean Hefty 7400e0ec7e0SSean Hefty return qp; 741d3d72d90SSean Hefty } 742d3d72d90SSean Hefty 7430e0ec7e0SSean Hefty struct ib_qp *ib_open_qp(struct ib_xrcd *xrcd, 7440e0ec7e0SSean Hefty struct ib_qp_open_attr *qp_open_attr) 7450e0ec7e0SSean Hefty { 7460e0ec7e0SSean Hefty struct ib_qp *qp, *real_qp; 7470e0ec7e0SSean Hefty 7480e0ec7e0SSean Hefty if (qp_open_attr->qp_type != IB_QPT_XRC_TGT) 7490e0ec7e0SSean Hefty return ERR_PTR(-EINVAL); 7500e0ec7e0SSean Hefty 7510e0ec7e0SSean Hefty qp = ERR_PTR(-EINVAL); 7520e0ec7e0SSean Hefty mutex_lock(&xrcd->tgt_qp_mutex); 7530e0ec7e0SSean Hefty list_for_each_entry(real_qp, &xrcd->tgt_qp_list, xrcd_list) { 7540e0ec7e0SSean Hefty if (real_qp->qp_num == qp_open_attr->qp_num) { 7550e0ec7e0SSean Hefty qp = __ib_open_qp(real_qp, qp_open_attr->event_handler, 7560e0ec7e0SSean Hefty qp_open_attr->qp_context); 7570e0ec7e0SSean Hefty break; 7580e0ec7e0SSean Hefty } 7590e0ec7e0SSean Hefty } 7600e0ec7e0SSean Hefty mutex_unlock(&xrcd->tgt_qp_mutex); 7610e0ec7e0SSean Hefty return qp; 7620e0ec7e0SSean Hefty } 7630e0ec7e0SSean Hefty EXPORT_SYMBOL(ib_open_qp); 7640e0ec7e0SSean Hefty 76504c41bf3SChristoph Hellwig static struct ib_qp *ib_create_xrc_qp(struct ib_qp *qp, 7661da177e4SLinus Torvalds struct ib_qp_init_attr *qp_init_attr) 7671da177e4SLinus Torvalds { 76804c41bf3SChristoph Hellwig struct ib_qp *real_qp = qp; 7691da177e4SLinus Torvalds 7700e0ec7e0SSean Hefty qp->event_handler = __ib_shared_qp_event_handler; 7710e0ec7e0SSean Hefty qp->qp_context = qp; 772b42b63cfSSean Hefty qp->pd = NULL; 773b42b63cfSSean Hefty qp->send_cq = qp->recv_cq = NULL; 774b42b63cfSSean Hefty qp->srq = NULL; 775b42b63cfSSean Hefty qp->xrcd = qp_init_attr->xrcd; 776b42b63cfSSean Hefty atomic_inc(&qp_init_attr->xrcd->usecnt); 7770e0ec7e0SSean Hefty INIT_LIST_HEAD(&qp->open_list); 7780e0ec7e0SSean Hefty 7790e0ec7e0SSean Hefty qp = __ib_open_qp(real_qp, qp_init_attr->event_handler, 7800e0ec7e0SSean Hefty qp_init_attr->qp_context); 7810e0ec7e0SSean Hefty if (!IS_ERR(qp)) 7820e0ec7e0SSean Hefty __ib_insert_xrcd_qp(qp_init_attr->xrcd, real_qp); 7830e0ec7e0SSean Hefty else 7840e0ec7e0SSean Hefty real_qp->device->destroy_qp(real_qp); 78504c41bf3SChristoph Hellwig return qp; 78604c41bf3SChristoph Hellwig } 78704c41bf3SChristoph Hellwig 78804c41bf3SChristoph Hellwig struct ib_qp *ib_create_qp(struct ib_pd *pd, 78904c41bf3SChristoph Hellwig struct ib_qp_init_attr *qp_init_attr) 79004c41bf3SChristoph Hellwig { 79104c41bf3SChristoph Hellwig struct ib_device *device = pd ? pd->device : qp_init_attr->xrcd->device; 79204c41bf3SChristoph Hellwig struct ib_qp *qp; 793a060b562SChristoph Hellwig int ret; 794a060b562SChristoph Hellwig 795a9017e23SYishai Hadas if (qp_init_attr->rwq_ind_tbl && 796a9017e23SYishai Hadas (qp_init_attr->recv_cq || 797a9017e23SYishai Hadas qp_init_attr->srq || qp_init_attr->cap.max_recv_wr || 798a9017e23SYishai Hadas qp_init_attr->cap.max_recv_sge)) 799a9017e23SYishai Hadas return ERR_PTR(-EINVAL); 800a9017e23SYishai Hadas 801a060b562SChristoph Hellwig /* 802a060b562SChristoph Hellwig * If the callers is using the RDMA API calculate the resources 803a060b562SChristoph Hellwig * needed for the RDMA READ/WRITE operations. 804a060b562SChristoph Hellwig * 805a060b562SChristoph Hellwig * Note that these callers need to pass in a port number. 806a060b562SChristoph Hellwig */ 807a060b562SChristoph Hellwig if (qp_init_attr->cap.max_rdma_ctxs) 808a060b562SChristoph Hellwig rdma_rw_init_qp(device, qp_init_attr); 80904c41bf3SChristoph Hellwig 81004c41bf3SChristoph Hellwig qp = device->create_qp(pd, qp_init_attr, NULL); 81104c41bf3SChristoph Hellwig if (IS_ERR(qp)) 81204c41bf3SChristoph Hellwig return qp; 81304c41bf3SChristoph Hellwig 814d291f1a6SDaniel Jurgens ret = ib_create_qp_security(qp, device); 815d291f1a6SDaniel Jurgens if (ret) { 816d291f1a6SDaniel Jurgens ib_destroy_qp(qp); 817d291f1a6SDaniel Jurgens return ERR_PTR(ret); 818d291f1a6SDaniel Jurgens } 819d291f1a6SDaniel Jurgens 82004c41bf3SChristoph Hellwig qp->device = device; 82104c41bf3SChristoph Hellwig qp->real_qp = qp; 82204c41bf3SChristoph Hellwig qp->uobject = NULL; 82304c41bf3SChristoph Hellwig qp->qp_type = qp_init_attr->qp_type; 824a9017e23SYishai Hadas qp->rwq_ind_tbl = qp_init_attr->rwq_ind_tbl; 82504c41bf3SChristoph Hellwig 82604c41bf3SChristoph Hellwig atomic_set(&qp->usecnt, 0); 827fffb0383SChristoph Hellwig qp->mrs_used = 0; 828fffb0383SChristoph Hellwig spin_lock_init(&qp->mr_lock); 829a060b562SChristoph Hellwig INIT_LIST_HEAD(&qp->rdma_mrs); 8300e353e34SChristoph Hellwig INIT_LIST_HEAD(&qp->sig_mrs); 831498ca3c8SNoa Osherovich qp->port = 0; 832fffb0383SChristoph Hellwig 83304c41bf3SChristoph Hellwig if (qp_init_attr->qp_type == IB_QPT_XRC_TGT) 83404c41bf3SChristoph Hellwig return ib_create_xrc_qp(qp, qp_init_attr); 83504c41bf3SChristoph Hellwig 8361da177e4SLinus Torvalds qp->event_handler = qp_init_attr->event_handler; 8371da177e4SLinus Torvalds qp->qp_context = qp_init_attr->qp_context; 838b42b63cfSSean Hefty if (qp_init_attr->qp_type == IB_QPT_XRC_INI) { 839b42b63cfSSean Hefty qp->recv_cq = NULL; 840b42b63cfSSean Hefty qp->srq = NULL; 841b42b63cfSSean Hefty } else { 842b42b63cfSSean Hefty qp->recv_cq = qp_init_attr->recv_cq; 843a9017e23SYishai Hadas if (qp_init_attr->recv_cq) 844b42b63cfSSean Hefty atomic_inc(&qp_init_attr->recv_cq->usecnt); 845b42b63cfSSean Hefty qp->srq = qp_init_attr->srq; 846b42b63cfSSean Hefty if (qp->srq) 847b42b63cfSSean Hefty atomic_inc(&qp_init_attr->srq->usecnt); 848b42b63cfSSean Hefty } 849b42b63cfSSean Hefty 8501da177e4SLinus Torvalds qp->pd = pd; 8511da177e4SLinus Torvalds qp->send_cq = qp_init_attr->send_cq; 852b42b63cfSSean Hefty qp->xrcd = NULL; 853b42b63cfSSean Hefty 8541da177e4SLinus Torvalds atomic_inc(&pd->usecnt); 855a9017e23SYishai Hadas if (qp_init_attr->send_cq) 8561da177e4SLinus Torvalds atomic_inc(&qp_init_attr->send_cq->usecnt); 857a9017e23SYishai Hadas if (qp_init_attr->rwq_ind_tbl) 858a9017e23SYishai Hadas atomic_inc(&qp->rwq_ind_tbl->usecnt); 859a060b562SChristoph Hellwig 860a060b562SChristoph Hellwig if (qp_init_attr->cap.max_rdma_ctxs) { 861a060b562SChristoph Hellwig ret = rdma_rw_init_mrs(qp, qp_init_attr); 862a060b562SChristoph Hellwig if (ret) { 863a060b562SChristoph Hellwig pr_err("failed to init MR pool ret= %d\n", ret); 864a060b562SChristoph Hellwig ib_destroy_qp(qp); 865b6bc1c73SSteve Wise return ERR_PTR(ret); 866a060b562SChristoph Hellwig } 867a060b562SChristoph Hellwig } 868a060b562SChristoph Hellwig 869632bc3f6SBart Van Assche /* 870632bc3f6SBart Van Assche * Note: all hw drivers guarantee that max_send_sge is lower than 871632bc3f6SBart Van Assche * the device RDMA WRITE SGE limit but not all hw drivers ensure that 872632bc3f6SBart Van Assche * max_send_sge <= max_sge_rd. 873632bc3f6SBart Van Assche */ 874632bc3f6SBart Van Assche qp->max_write_sge = qp_init_attr->cap.max_send_sge; 875632bc3f6SBart Van Assche qp->max_read_sge = min_t(u32, qp_init_attr->cap.max_send_sge, 876632bc3f6SBart Van Assche device->attrs.max_sge_rd); 877632bc3f6SBart Van Assche 8781da177e4SLinus Torvalds return qp; 8791da177e4SLinus Torvalds } 8801da177e4SLinus Torvalds EXPORT_SYMBOL(ib_create_qp); 8811da177e4SLinus Torvalds 8828a51866fSRoland Dreier static const struct { 8838a51866fSRoland Dreier int valid; 884b42b63cfSSean Hefty enum ib_qp_attr_mask req_param[IB_QPT_MAX]; 885b42b63cfSSean Hefty enum ib_qp_attr_mask opt_param[IB_QPT_MAX]; 8868a51866fSRoland Dreier } qp_state_table[IB_QPS_ERR + 1][IB_QPS_ERR + 1] = { 8878a51866fSRoland Dreier [IB_QPS_RESET] = { 8888a51866fSRoland Dreier [IB_QPS_RESET] = { .valid = 1 }, 8898a51866fSRoland Dreier [IB_QPS_INIT] = { 8908a51866fSRoland Dreier .valid = 1, 8918a51866fSRoland Dreier .req_param = { 8928a51866fSRoland Dreier [IB_QPT_UD] = (IB_QP_PKEY_INDEX | 8938a51866fSRoland Dreier IB_QP_PORT | 8948a51866fSRoland Dreier IB_QP_QKEY), 895c938a616SOr Gerlitz [IB_QPT_RAW_PACKET] = IB_QP_PORT, 8968a51866fSRoland Dreier [IB_QPT_UC] = (IB_QP_PKEY_INDEX | 8978a51866fSRoland Dreier IB_QP_PORT | 8988a51866fSRoland Dreier IB_QP_ACCESS_FLAGS), 8998a51866fSRoland Dreier [IB_QPT_RC] = (IB_QP_PKEY_INDEX | 9008a51866fSRoland Dreier IB_QP_PORT | 9018a51866fSRoland Dreier IB_QP_ACCESS_FLAGS), 902b42b63cfSSean Hefty [IB_QPT_XRC_INI] = (IB_QP_PKEY_INDEX | 903b42b63cfSSean Hefty IB_QP_PORT | 904b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS), 905b42b63cfSSean Hefty [IB_QPT_XRC_TGT] = (IB_QP_PKEY_INDEX | 906b42b63cfSSean Hefty IB_QP_PORT | 907b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS), 9088a51866fSRoland Dreier [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | 9098a51866fSRoland Dreier IB_QP_QKEY), 9108a51866fSRoland Dreier [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | 9118a51866fSRoland Dreier IB_QP_QKEY), 9128a51866fSRoland Dreier } 9138a51866fSRoland Dreier }, 9148a51866fSRoland Dreier }, 9158a51866fSRoland Dreier [IB_QPS_INIT] = { 9168a51866fSRoland Dreier [IB_QPS_RESET] = { .valid = 1 }, 9178a51866fSRoland Dreier [IB_QPS_ERR] = { .valid = 1 }, 9188a51866fSRoland Dreier [IB_QPS_INIT] = { 9198a51866fSRoland Dreier .valid = 1, 9208a51866fSRoland Dreier .opt_param = { 9218a51866fSRoland Dreier [IB_QPT_UD] = (IB_QP_PKEY_INDEX | 9228a51866fSRoland Dreier IB_QP_PORT | 9238a51866fSRoland Dreier IB_QP_QKEY), 9248a51866fSRoland Dreier [IB_QPT_UC] = (IB_QP_PKEY_INDEX | 9258a51866fSRoland Dreier IB_QP_PORT | 9268a51866fSRoland Dreier IB_QP_ACCESS_FLAGS), 9278a51866fSRoland Dreier [IB_QPT_RC] = (IB_QP_PKEY_INDEX | 9288a51866fSRoland Dreier IB_QP_PORT | 9298a51866fSRoland Dreier IB_QP_ACCESS_FLAGS), 930b42b63cfSSean Hefty [IB_QPT_XRC_INI] = (IB_QP_PKEY_INDEX | 931b42b63cfSSean Hefty IB_QP_PORT | 932b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS), 933b42b63cfSSean Hefty [IB_QPT_XRC_TGT] = (IB_QP_PKEY_INDEX | 934b42b63cfSSean Hefty IB_QP_PORT | 935b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS), 9368a51866fSRoland Dreier [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | 9378a51866fSRoland Dreier IB_QP_QKEY), 9388a51866fSRoland Dreier [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | 9398a51866fSRoland Dreier IB_QP_QKEY), 9408a51866fSRoland Dreier } 9418a51866fSRoland Dreier }, 9428a51866fSRoland Dreier [IB_QPS_RTR] = { 9438a51866fSRoland Dreier .valid = 1, 9448a51866fSRoland Dreier .req_param = { 9458a51866fSRoland Dreier [IB_QPT_UC] = (IB_QP_AV | 9468a51866fSRoland Dreier IB_QP_PATH_MTU | 9478a51866fSRoland Dreier IB_QP_DEST_QPN | 9488a51866fSRoland Dreier IB_QP_RQ_PSN), 9498a51866fSRoland Dreier [IB_QPT_RC] = (IB_QP_AV | 9508a51866fSRoland Dreier IB_QP_PATH_MTU | 9518a51866fSRoland Dreier IB_QP_DEST_QPN | 9528a51866fSRoland Dreier IB_QP_RQ_PSN | 9538a51866fSRoland Dreier IB_QP_MAX_DEST_RD_ATOMIC | 9548a51866fSRoland Dreier IB_QP_MIN_RNR_TIMER), 955b42b63cfSSean Hefty [IB_QPT_XRC_INI] = (IB_QP_AV | 956b42b63cfSSean Hefty IB_QP_PATH_MTU | 957b42b63cfSSean Hefty IB_QP_DEST_QPN | 958b42b63cfSSean Hefty IB_QP_RQ_PSN), 959b42b63cfSSean Hefty [IB_QPT_XRC_TGT] = (IB_QP_AV | 960b42b63cfSSean Hefty IB_QP_PATH_MTU | 961b42b63cfSSean Hefty IB_QP_DEST_QPN | 962b42b63cfSSean Hefty IB_QP_RQ_PSN | 963b42b63cfSSean Hefty IB_QP_MAX_DEST_RD_ATOMIC | 964b42b63cfSSean Hefty IB_QP_MIN_RNR_TIMER), 9658a51866fSRoland Dreier }, 9668a51866fSRoland Dreier .opt_param = { 9678a51866fSRoland Dreier [IB_QPT_UD] = (IB_QP_PKEY_INDEX | 9688a51866fSRoland Dreier IB_QP_QKEY), 9698a51866fSRoland Dreier [IB_QPT_UC] = (IB_QP_ALT_PATH | 9708a51866fSRoland Dreier IB_QP_ACCESS_FLAGS | 9718a51866fSRoland Dreier IB_QP_PKEY_INDEX), 9728a51866fSRoland Dreier [IB_QPT_RC] = (IB_QP_ALT_PATH | 9738a51866fSRoland Dreier IB_QP_ACCESS_FLAGS | 9748a51866fSRoland Dreier IB_QP_PKEY_INDEX), 975b42b63cfSSean Hefty [IB_QPT_XRC_INI] = (IB_QP_ALT_PATH | 976b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS | 977b42b63cfSSean Hefty IB_QP_PKEY_INDEX), 978b42b63cfSSean Hefty [IB_QPT_XRC_TGT] = (IB_QP_ALT_PATH | 979b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS | 980b42b63cfSSean Hefty IB_QP_PKEY_INDEX), 9818a51866fSRoland Dreier [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | 9828a51866fSRoland Dreier IB_QP_QKEY), 9838a51866fSRoland Dreier [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | 9848a51866fSRoland Dreier IB_QP_QKEY), 985dd5f03beSMatan Barak }, 986dbf727deSMatan Barak }, 9878a51866fSRoland Dreier }, 9888a51866fSRoland Dreier [IB_QPS_RTR] = { 9898a51866fSRoland Dreier [IB_QPS_RESET] = { .valid = 1 }, 9908a51866fSRoland Dreier [IB_QPS_ERR] = { .valid = 1 }, 9918a51866fSRoland Dreier [IB_QPS_RTS] = { 9928a51866fSRoland Dreier .valid = 1, 9938a51866fSRoland Dreier .req_param = { 9948a51866fSRoland Dreier [IB_QPT_UD] = IB_QP_SQ_PSN, 9958a51866fSRoland Dreier [IB_QPT_UC] = IB_QP_SQ_PSN, 9968a51866fSRoland Dreier [IB_QPT_RC] = (IB_QP_TIMEOUT | 9978a51866fSRoland Dreier IB_QP_RETRY_CNT | 9988a51866fSRoland Dreier IB_QP_RNR_RETRY | 9998a51866fSRoland Dreier IB_QP_SQ_PSN | 10008a51866fSRoland Dreier IB_QP_MAX_QP_RD_ATOMIC), 1001b42b63cfSSean Hefty [IB_QPT_XRC_INI] = (IB_QP_TIMEOUT | 1002b42b63cfSSean Hefty IB_QP_RETRY_CNT | 1003b42b63cfSSean Hefty IB_QP_RNR_RETRY | 1004b42b63cfSSean Hefty IB_QP_SQ_PSN | 1005b42b63cfSSean Hefty IB_QP_MAX_QP_RD_ATOMIC), 1006b42b63cfSSean Hefty [IB_QPT_XRC_TGT] = (IB_QP_TIMEOUT | 1007b42b63cfSSean Hefty IB_QP_SQ_PSN), 10088a51866fSRoland Dreier [IB_QPT_SMI] = IB_QP_SQ_PSN, 10098a51866fSRoland Dreier [IB_QPT_GSI] = IB_QP_SQ_PSN, 10108a51866fSRoland Dreier }, 10118a51866fSRoland Dreier .opt_param = { 10128a51866fSRoland Dreier [IB_QPT_UD] = (IB_QP_CUR_STATE | 10138a51866fSRoland Dreier IB_QP_QKEY), 10148a51866fSRoland Dreier [IB_QPT_UC] = (IB_QP_CUR_STATE | 10158a51866fSRoland Dreier IB_QP_ALT_PATH | 10168a51866fSRoland Dreier IB_QP_ACCESS_FLAGS | 10178a51866fSRoland Dreier IB_QP_PATH_MIG_STATE), 10188a51866fSRoland Dreier [IB_QPT_RC] = (IB_QP_CUR_STATE | 10198a51866fSRoland Dreier IB_QP_ALT_PATH | 10208a51866fSRoland Dreier IB_QP_ACCESS_FLAGS | 10218a51866fSRoland Dreier IB_QP_MIN_RNR_TIMER | 10228a51866fSRoland Dreier IB_QP_PATH_MIG_STATE), 1023b42b63cfSSean Hefty [IB_QPT_XRC_INI] = (IB_QP_CUR_STATE | 1024b42b63cfSSean Hefty IB_QP_ALT_PATH | 1025b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS | 1026b42b63cfSSean Hefty IB_QP_PATH_MIG_STATE), 1027b42b63cfSSean Hefty [IB_QPT_XRC_TGT] = (IB_QP_CUR_STATE | 1028b42b63cfSSean Hefty IB_QP_ALT_PATH | 1029b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS | 1030b42b63cfSSean Hefty IB_QP_MIN_RNR_TIMER | 1031b42b63cfSSean Hefty IB_QP_PATH_MIG_STATE), 10328a51866fSRoland Dreier [IB_QPT_SMI] = (IB_QP_CUR_STATE | 10338a51866fSRoland Dreier IB_QP_QKEY), 10348a51866fSRoland Dreier [IB_QPT_GSI] = (IB_QP_CUR_STATE | 10358a51866fSRoland Dreier IB_QP_QKEY), 1036528e5a1bSBodong Wang [IB_QPT_RAW_PACKET] = IB_QP_RATE_LIMIT, 10378a51866fSRoland Dreier } 10388a51866fSRoland Dreier } 10398a51866fSRoland Dreier }, 10408a51866fSRoland Dreier [IB_QPS_RTS] = { 10418a51866fSRoland Dreier [IB_QPS_RESET] = { .valid = 1 }, 10428a51866fSRoland Dreier [IB_QPS_ERR] = { .valid = 1 }, 10438a51866fSRoland Dreier [IB_QPS_RTS] = { 10448a51866fSRoland Dreier .valid = 1, 10458a51866fSRoland Dreier .opt_param = { 10468a51866fSRoland Dreier [IB_QPT_UD] = (IB_QP_CUR_STATE | 10478a51866fSRoland Dreier IB_QP_QKEY), 10484546d31dSDotan Barak [IB_QPT_UC] = (IB_QP_CUR_STATE | 10494546d31dSDotan Barak IB_QP_ACCESS_FLAGS | 10508a51866fSRoland Dreier IB_QP_ALT_PATH | 10518a51866fSRoland Dreier IB_QP_PATH_MIG_STATE), 10524546d31dSDotan Barak [IB_QPT_RC] = (IB_QP_CUR_STATE | 10534546d31dSDotan Barak IB_QP_ACCESS_FLAGS | 10548a51866fSRoland Dreier IB_QP_ALT_PATH | 10558a51866fSRoland Dreier IB_QP_PATH_MIG_STATE | 10568a51866fSRoland Dreier IB_QP_MIN_RNR_TIMER), 1057b42b63cfSSean Hefty [IB_QPT_XRC_INI] = (IB_QP_CUR_STATE | 1058b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS | 1059b42b63cfSSean Hefty IB_QP_ALT_PATH | 1060b42b63cfSSean Hefty IB_QP_PATH_MIG_STATE), 1061b42b63cfSSean Hefty [IB_QPT_XRC_TGT] = (IB_QP_CUR_STATE | 1062b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS | 1063b42b63cfSSean Hefty IB_QP_ALT_PATH | 1064b42b63cfSSean Hefty IB_QP_PATH_MIG_STATE | 1065b42b63cfSSean Hefty IB_QP_MIN_RNR_TIMER), 10668a51866fSRoland Dreier [IB_QPT_SMI] = (IB_QP_CUR_STATE | 10678a51866fSRoland Dreier IB_QP_QKEY), 10688a51866fSRoland Dreier [IB_QPT_GSI] = (IB_QP_CUR_STATE | 10698a51866fSRoland Dreier IB_QP_QKEY), 1070528e5a1bSBodong Wang [IB_QPT_RAW_PACKET] = IB_QP_RATE_LIMIT, 10718a51866fSRoland Dreier } 10728a51866fSRoland Dreier }, 10738a51866fSRoland Dreier [IB_QPS_SQD] = { 10748a51866fSRoland Dreier .valid = 1, 10758a51866fSRoland Dreier .opt_param = { 10768a51866fSRoland Dreier [IB_QPT_UD] = IB_QP_EN_SQD_ASYNC_NOTIFY, 10778a51866fSRoland Dreier [IB_QPT_UC] = IB_QP_EN_SQD_ASYNC_NOTIFY, 10788a51866fSRoland Dreier [IB_QPT_RC] = IB_QP_EN_SQD_ASYNC_NOTIFY, 1079b42b63cfSSean Hefty [IB_QPT_XRC_INI] = IB_QP_EN_SQD_ASYNC_NOTIFY, 1080b42b63cfSSean Hefty [IB_QPT_XRC_TGT] = IB_QP_EN_SQD_ASYNC_NOTIFY, /* ??? */ 10818a51866fSRoland Dreier [IB_QPT_SMI] = IB_QP_EN_SQD_ASYNC_NOTIFY, 10828a51866fSRoland Dreier [IB_QPT_GSI] = IB_QP_EN_SQD_ASYNC_NOTIFY 10838a51866fSRoland Dreier } 10848a51866fSRoland Dreier }, 10858a51866fSRoland Dreier }, 10868a51866fSRoland Dreier [IB_QPS_SQD] = { 10878a51866fSRoland Dreier [IB_QPS_RESET] = { .valid = 1 }, 10888a51866fSRoland Dreier [IB_QPS_ERR] = { .valid = 1 }, 10898a51866fSRoland Dreier [IB_QPS_RTS] = { 10908a51866fSRoland Dreier .valid = 1, 10918a51866fSRoland Dreier .opt_param = { 10928a51866fSRoland Dreier [IB_QPT_UD] = (IB_QP_CUR_STATE | 10938a51866fSRoland Dreier IB_QP_QKEY), 10948a51866fSRoland Dreier [IB_QPT_UC] = (IB_QP_CUR_STATE | 10958a51866fSRoland Dreier IB_QP_ALT_PATH | 10968a51866fSRoland Dreier IB_QP_ACCESS_FLAGS | 10978a51866fSRoland Dreier IB_QP_PATH_MIG_STATE), 10988a51866fSRoland Dreier [IB_QPT_RC] = (IB_QP_CUR_STATE | 10998a51866fSRoland Dreier IB_QP_ALT_PATH | 11008a51866fSRoland Dreier IB_QP_ACCESS_FLAGS | 11018a51866fSRoland Dreier IB_QP_MIN_RNR_TIMER | 11028a51866fSRoland Dreier IB_QP_PATH_MIG_STATE), 1103b42b63cfSSean Hefty [IB_QPT_XRC_INI] = (IB_QP_CUR_STATE | 1104b42b63cfSSean Hefty IB_QP_ALT_PATH | 1105b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS | 1106b42b63cfSSean Hefty IB_QP_PATH_MIG_STATE), 1107b42b63cfSSean Hefty [IB_QPT_XRC_TGT] = (IB_QP_CUR_STATE | 1108b42b63cfSSean Hefty IB_QP_ALT_PATH | 1109b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS | 1110b42b63cfSSean Hefty IB_QP_MIN_RNR_TIMER | 1111b42b63cfSSean Hefty IB_QP_PATH_MIG_STATE), 11128a51866fSRoland Dreier [IB_QPT_SMI] = (IB_QP_CUR_STATE | 11138a51866fSRoland Dreier IB_QP_QKEY), 11148a51866fSRoland Dreier [IB_QPT_GSI] = (IB_QP_CUR_STATE | 11158a51866fSRoland Dreier IB_QP_QKEY), 11168a51866fSRoland Dreier } 11178a51866fSRoland Dreier }, 11188a51866fSRoland Dreier [IB_QPS_SQD] = { 11198a51866fSRoland Dreier .valid = 1, 11208a51866fSRoland Dreier .opt_param = { 11218a51866fSRoland Dreier [IB_QPT_UD] = (IB_QP_PKEY_INDEX | 11228a51866fSRoland Dreier IB_QP_QKEY), 11238a51866fSRoland Dreier [IB_QPT_UC] = (IB_QP_AV | 11248a51866fSRoland Dreier IB_QP_ALT_PATH | 11258a51866fSRoland Dreier IB_QP_ACCESS_FLAGS | 11268a51866fSRoland Dreier IB_QP_PKEY_INDEX | 11278a51866fSRoland Dreier IB_QP_PATH_MIG_STATE), 11288a51866fSRoland Dreier [IB_QPT_RC] = (IB_QP_PORT | 11298a51866fSRoland Dreier IB_QP_AV | 11308a51866fSRoland Dreier IB_QP_TIMEOUT | 11318a51866fSRoland Dreier IB_QP_RETRY_CNT | 11328a51866fSRoland Dreier IB_QP_RNR_RETRY | 11338a51866fSRoland Dreier IB_QP_MAX_QP_RD_ATOMIC | 11348a51866fSRoland Dreier IB_QP_MAX_DEST_RD_ATOMIC | 11358a51866fSRoland Dreier IB_QP_ALT_PATH | 11368a51866fSRoland Dreier IB_QP_ACCESS_FLAGS | 11378a51866fSRoland Dreier IB_QP_PKEY_INDEX | 11388a51866fSRoland Dreier IB_QP_MIN_RNR_TIMER | 11398a51866fSRoland Dreier IB_QP_PATH_MIG_STATE), 1140b42b63cfSSean Hefty [IB_QPT_XRC_INI] = (IB_QP_PORT | 1141b42b63cfSSean Hefty IB_QP_AV | 1142b42b63cfSSean Hefty IB_QP_TIMEOUT | 1143b42b63cfSSean Hefty IB_QP_RETRY_CNT | 1144b42b63cfSSean Hefty IB_QP_RNR_RETRY | 1145b42b63cfSSean Hefty IB_QP_MAX_QP_RD_ATOMIC | 1146b42b63cfSSean Hefty IB_QP_ALT_PATH | 1147b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS | 1148b42b63cfSSean Hefty IB_QP_PKEY_INDEX | 1149b42b63cfSSean Hefty IB_QP_PATH_MIG_STATE), 1150b42b63cfSSean Hefty [IB_QPT_XRC_TGT] = (IB_QP_PORT | 1151b42b63cfSSean Hefty IB_QP_AV | 1152b42b63cfSSean Hefty IB_QP_TIMEOUT | 1153b42b63cfSSean Hefty IB_QP_MAX_DEST_RD_ATOMIC | 1154b42b63cfSSean Hefty IB_QP_ALT_PATH | 1155b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS | 1156b42b63cfSSean Hefty IB_QP_PKEY_INDEX | 1157b42b63cfSSean Hefty IB_QP_MIN_RNR_TIMER | 1158b42b63cfSSean Hefty IB_QP_PATH_MIG_STATE), 11598a51866fSRoland Dreier [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | 11608a51866fSRoland Dreier IB_QP_QKEY), 11618a51866fSRoland Dreier [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | 11628a51866fSRoland Dreier IB_QP_QKEY), 11638a51866fSRoland Dreier } 11648a51866fSRoland Dreier } 11658a51866fSRoland Dreier }, 11668a51866fSRoland Dreier [IB_QPS_SQE] = { 11678a51866fSRoland Dreier [IB_QPS_RESET] = { .valid = 1 }, 11688a51866fSRoland Dreier [IB_QPS_ERR] = { .valid = 1 }, 11698a51866fSRoland Dreier [IB_QPS_RTS] = { 11708a51866fSRoland Dreier .valid = 1, 11718a51866fSRoland Dreier .opt_param = { 11728a51866fSRoland Dreier [IB_QPT_UD] = (IB_QP_CUR_STATE | 11738a51866fSRoland Dreier IB_QP_QKEY), 11748a51866fSRoland Dreier [IB_QPT_UC] = (IB_QP_CUR_STATE | 11758a51866fSRoland Dreier IB_QP_ACCESS_FLAGS), 11768a51866fSRoland Dreier [IB_QPT_SMI] = (IB_QP_CUR_STATE | 11778a51866fSRoland Dreier IB_QP_QKEY), 11788a51866fSRoland Dreier [IB_QPT_GSI] = (IB_QP_CUR_STATE | 11798a51866fSRoland Dreier IB_QP_QKEY), 11808a51866fSRoland Dreier } 11818a51866fSRoland Dreier } 11828a51866fSRoland Dreier }, 11838a51866fSRoland Dreier [IB_QPS_ERR] = { 11848a51866fSRoland Dreier [IB_QPS_RESET] = { .valid = 1 }, 11858a51866fSRoland Dreier [IB_QPS_ERR] = { .valid = 1 } 11868a51866fSRoland Dreier } 11878a51866fSRoland Dreier }; 11888a51866fSRoland Dreier 11898a51866fSRoland Dreier int ib_modify_qp_is_ok(enum ib_qp_state cur_state, enum ib_qp_state next_state, 1190dd5f03beSMatan Barak enum ib_qp_type type, enum ib_qp_attr_mask mask, 1191dd5f03beSMatan Barak enum rdma_link_layer ll) 11928a51866fSRoland Dreier { 11938a51866fSRoland Dreier enum ib_qp_attr_mask req_param, opt_param; 11948a51866fSRoland Dreier 11958a51866fSRoland Dreier if (cur_state < 0 || cur_state > IB_QPS_ERR || 11968a51866fSRoland Dreier next_state < 0 || next_state > IB_QPS_ERR) 11978a51866fSRoland Dreier return 0; 11988a51866fSRoland Dreier 11998a51866fSRoland Dreier if (mask & IB_QP_CUR_STATE && 12008a51866fSRoland Dreier cur_state != IB_QPS_RTR && cur_state != IB_QPS_RTS && 12018a51866fSRoland Dreier cur_state != IB_QPS_SQD && cur_state != IB_QPS_SQE) 12028a51866fSRoland Dreier return 0; 12038a51866fSRoland Dreier 12048a51866fSRoland Dreier if (!qp_state_table[cur_state][next_state].valid) 12058a51866fSRoland Dreier return 0; 12068a51866fSRoland Dreier 12078a51866fSRoland Dreier req_param = qp_state_table[cur_state][next_state].req_param[type]; 12088a51866fSRoland Dreier opt_param = qp_state_table[cur_state][next_state].opt_param[type]; 12098a51866fSRoland Dreier 12108a51866fSRoland Dreier if ((mask & req_param) != req_param) 12118a51866fSRoland Dreier return 0; 12128a51866fSRoland Dreier 12138a51866fSRoland Dreier if (mask & ~(req_param | opt_param | IB_QP_STATE)) 12148a51866fSRoland Dreier return 0; 12158a51866fSRoland Dreier 12168a51866fSRoland Dreier return 1; 12178a51866fSRoland Dreier } 12188a51866fSRoland Dreier EXPORT_SYMBOL(ib_modify_qp_is_ok); 12198a51866fSRoland Dreier 1220c90ea9d8SMoni Shoua int ib_resolve_eth_dmac(struct ib_device *device, 122190898850SDasaratharaman Chandramouli struct rdma_ah_attr *ah_attr) 1222ed4c54e5SOr Gerlitz { 1223ed4c54e5SOr Gerlitz int ret = 0; 1224d8966fcdSDasaratharaman Chandramouli struct ib_global_route *grh; 1225ed4c54e5SOr Gerlitz 1226d8966fcdSDasaratharaman Chandramouli if (!rdma_is_port_valid(device, rdma_ah_get_port_num(ah_attr))) 1227dbf727deSMatan Barak return -EINVAL; 1228dbf727deSMatan Barak 122944c58487SDasaratharaman Chandramouli if (ah_attr->type != RDMA_AH_ATTR_TYPE_ROCE) 1230dbf727deSMatan Barak return 0; 1231dbf727deSMatan Barak 1232d8966fcdSDasaratharaman Chandramouli grh = rdma_ah_retrieve_grh(ah_attr); 1233d8966fcdSDasaratharaman Chandramouli 1234d8966fcdSDasaratharaman Chandramouli if (rdma_link_local_addr((struct in6_addr *)grh->dgid.raw)) { 1235d8966fcdSDasaratharaman Chandramouli rdma_get_ll_mac((struct in6_addr *)grh->dgid.raw, 123644c58487SDasaratharaman Chandramouli ah_attr->roce.dmac); 12379636a56fSNoa Osherovich return 0; 12389636a56fSNoa Osherovich } 12399636a56fSNoa Osherovich if (rdma_is_multicast_addr((struct in6_addr *)ah_attr->grh.dgid.raw)) { 12409636a56fSNoa Osherovich if (ipv6_addr_v4mapped((struct in6_addr *)ah_attr->grh.dgid.raw)) { 12419636a56fSNoa Osherovich __be32 addr = 0; 12429636a56fSNoa Osherovich 12439636a56fSNoa Osherovich memcpy(&addr, ah_attr->grh.dgid.raw + 12, 4); 12449636a56fSNoa Osherovich ip_eth_mc_map(addr, (char *)ah_attr->roce.dmac); 12459636a56fSNoa Osherovich } else { 12469636a56fSNoa Osherovich ipv6_eth_mc_map((struct in6_addr *)ah_attr->grh.dgid.raw, 12479636a56fSNoa Osherovich (char *)ah_attr->roce.dmac); 12489636a56fSNoa Osherovich } 1249ed4c54e5SOr Gerlitz } else { 1250dbf727deSMatan Barak union ib_gid sgid; 1251dbf727deSMatan Barak struct ib_gid_attr sgid_attr; 1252dbf727deSMatan Barak int ifindex; 1253c3efe750SMatan Barak int hop_limit; 1254dbf727deSMatan Barak 1255c90ea9d8SMoni Shoua ret = ib_query_gid(device, 1256d8966fcdSDasaratharaman Chandramouli rdma_ah_get_port_num(ah_attr), 1257d8966fcdSDasaratharaman Chandramouli grh->sgid_index, 1258dbf727deSMatan Barak &sgid, &sgid_attr); 1259dbf727deSMatan Barak 1260dbf727deSMatan Barak if (ret || !sgid_attr.ndev) { 1261dbf727deSMatan Barak if (!ret) 1262dbf727deSMatan Barak ret = -ENXIO; 1263ed4c54e5SOr Gerlitz goto out; 1264ed4c54e5SOr Gerlitz } 1265dbf727deSMatan Barak 1266dbf727deSMatan Barak ifindex = sgid_attr.ndev->ifindex; 1267dbf727deSMatan Barak 1268d8966fcdSDasaratharaman Chandramouli ret = 1269d8966fcdSDasaratharaman Chandramouli rdma_addr_find_l2_eth_by_grh(&sgid, &grh->dgid, 127044c58487SDasaratharaman Chandramouli ah_attr->roce.dmac, 1271c3efe750SMatan Barak NULL, &ifindex, &hop_limit); 1272dbf727deSMatan Barak 1273dbf727deSMatan Barak dev_put(sgid_attr.ndev); 1274c3efe750SMatan Barak 1275d8966fcdSDasaratharaman Chandramouli grh->hop_limit = hop_limit; 1276ed4c54e5SOr Gerlitz } 1277ed4c54e5SOr Gerlitz out: 1278ed4c54e5SOr Gerlitz return ret; 1279ed4c54e5SOr Gerlitz } 1280dbf727deSMatan Barak EXPORT_SYMBOL(ib_resolve_eth_dmac); 1281ed4c54e5SOr Gerlitz 1282a512c2fbSParav Pandit /** 1283a512c2fbSParav Pandit * ib_modify_qp_with_udata - Modifies the attributes for the specified QP. 1284a512c2fbSParav Pandit * @qp: The QP to modify. 1285a512c2fbSParav Pandit * @attr: On input, specifies the QP attributes to modify. On output, 1286a512c2fbSParav Pandit * the current values of selected QP attributes are returned. 1287a512c2fbSParav Pandit * @attr_mask: A bit-mask used to specify which attributes of the QP 1288a512c2fbSParav Pandit * are being modified. 1289a512c2fbSParav Pandit * @udata: pointer to user's input output buffer information 1290a512c2fbSParav Pandit * are being modified. 1291a512c2fbSParav Pandit * It returns 0 on success and returns appropriate error code on error. 1292a512c2fbSParav Pandit */ 1293a512c2fbSParav Pandit int ib_modify_qp_with_udata(struct ib_qp *qp, struct ib_qp_attr *attr, 1294a512c2fbSParav Pandit int attr_mask, struct ib_udata *udata) 1295a512c2fbSParav Pandit { 1296a512c2fbSParav Pandit int ret; 1297a512c2fbSParav Pandit 1298a512c2fbSParav Pandit if (attr_mask & IB_QP_AV) { 1299a512c2fbSParav Pandit ret = ib_resolve_eth_dmac(qp->device, &attr->ah_attr); 1300a512c2fbSParav Pandit if (ret) 1301a512c2fbSParav Pandit return ret; 1302a512c2fbSParav Pandit } 1303498ca3c8SNoa Osherovich ret = ib_security_modify_qp(qp, attr, attr_mask, udata); 1304498ca3c8SNoa Osherovich if (!ret && (attr_mask & IB_QP_PORT)) 1305498ca3c8SNoa Osherovich qp->port = attr->port_num; 1306498ca3c8SNoa Osherovich 1307498ca3c8SNoa Osherovich return ret; 1308a512c2fbSParav Pandit } 1309a512c2fbSParav Pandit EXPORT_SYMBOL(ib_modify_qp_with_udata); 1310a512c2fbSParav Pandit 1311d4186194SYuval Shaia int ib_get_eth_speed(struct ib_device *dev, u8 port_num, u8 *speed, u8 *width) 1312d4186194SYuval Shaia { 1313d4186194SYuval Shaia int rc; 1314d4186194SYuval Shaia u32 netdev_speed; 1315d4186194SYuval Shaia struct net_device *netdev; 1316d4186194SYuval Shaia struct ethtool_link_ksettings lksettings; 1317d4186194SYuval Shaia 1318d4186194SYuval Shaia if (rdma_port_get_link_layer(dev, port_num) != IB_LINK_LAYER_ETHERNET) 1319d4186194SYuval Shaia return -EINVAL; 1320d4186194SYuval Shaia 1321d4186194SYuval Shaia if (!dev->get_netdev) 1322d4186194SYuval Shaia return -EOPNOTSUPP; 1323d4186194SYuval Shaia 1324d4186194SYuval Shaia netdev = dev->get_netdev(dev, port_num); 1325d4186194SYuval Shaia if (!netdev) 1326d4186194SYuval Shaia return -ENODEV; 1327d4186194SYuval Shaia 1328d4186194SYuval Shaia rtnl_lock(); 1329d4186194SYuval Shaia rc = __ethtool_get_link_ksettings(netdev, &lksettings); 1330d4186194SYuval Shaia rtnl_unlock(); 1331d4186194SYuval Shaia 1332d4186194SYuval Shaia dev_put(netdev); 1333d4186194SYuval Shaia 1334d4186194SYuval Shaia if (!rc) { 1335d4186194SYuval Shaia netdev_speed = lksettings.base.speed; 1336d4186194SYuval Shaia } else { 1337d4186194SYuval Shaia netdev_speed = SPEED_1000; 1338d4186194SYuval Shaia pr_warn("%s speed is unknown, defaulting to %d\n", netdev->name, 1339d4186194SYuval Shaia netdev_speed); 1340d4186194SYuval Shaia } 1341d4186194SYuval Shaia 1342d4186194SYuval Shaia if (netdev_speed <= SPEED_1000) { 1343d4186194SYuval Shaia *width = IB_WIDTH_1X; 1344d4186194SYuval Shaia *speed = IB_SPEED_SDR; 1345d4186194SYuval Shaia } else if (netdev_speed <= SPEED_10000) { 1346d4186194SYuval Shaia *width = IB_WIDTH_1X; 1347d4186194SYuval Shaia *speed = IB_SPEED_FDR10; 1348d4186194SYuval Shaia } else if (netdev_speed <= SPEED_20000) { 1349d4186194SYuval Shaia *width = IB_WIDTH_4X; 1350d4186194SYuval Shaia *speed = IB_SPEED_DDR; 1351d4186194SYuval Shaia } else if (netdev_speed <= SPEED_25000) { 1352d4186194SYuval Shaia *width = IB_WIDTH_1X; 1353d4186194SYuval Shaia *speed = IB_SPEED_EDR; 1354d4186194SYuval Shaia } else if (netdev_speed <= SPEED_40000) { 1355d4186194SYuval Shaia *width = IB_WIDTH_4X; 1356d4186194SYuval Shaia *speed = IB_SPEED_FDR10; 1357d4186194SYuval Shaia } else { 1358d4186194SYuval Shaia *width = IB_WIDTH_4X; 1359d4186194SYuval Shaia *speed = IB_SPEED_EDR; 1360d4186194SYuval Shaia } 1361d4186194SYuval Shaia 1362d4186194SYuval Shaia return 0; 1363d4186194SYuval Shaia } 1364d4186194SYuval Shaia EXPORT_SYMBOL(ib_get_eth_speed); 1365d4186194SYuval Shaia 13661da177e4SLinus Torvalds int ib_modify_qp(struct ib_qp *qp, 13671da177e4SLinus Torvalds struct ib_qp_attr *qp_attr, 13681da177e4SLinus Torvalds int qp_attr_mask) 13691da177e4SLinus Torvalds { 1370a512c2fbSParav Pandit return ib_modify_qp_with_udata(qp, qp_attr, qp_attr_mask, NULL); 13711da177e4SLinus Torvalds } 13721da177e4SLinus Torvalds EXPORT_SYMBOL(ib_modify_qp); 13731da177e4SLinus Torvalds 13741da177e4SLinus Torvalds int ib_query_qp(struct ib_qp *qp, 13751da177e4SLinus Torvalds struct ib_qp_attr *qp_attr, 13761da177e4SLinus Torvalds int qp_attr_mask, 13771da177e4SLinus Torvalds struct ib_qp_init_attr *qp_init_attr) 13781da177e4SLinus Torvalds { 13791da177e4SLinus Torvalds return qp->device->query_qp ? 13800e0ec7e0SSean Hefty qp->device->query_qp(qp->real_qp, qp_attr, qp_attr_mask, qp_init_attr) : 13811da177e4SLinus Torvalds -ENOSYS; 13821da177e4SLinus Torvalds } 13831da177e4SLinus Torvalds EXPORT_SYMBOL(ib_query_qp); 13841da177e4SLinus Torvalds 13850e0ec7e0SSean Hefty int ib_close_qp(struct ib_qp *qp) 13860e0ec7e0SSean Hefty { 13870e0ec7e0SSean Hefty struct ib_qp *real_qp; 13880e0ec7e0SSean Hefty unsigned long flags; 13890e0ec7e0SSean Hefty 13900e0ec7e0SSean Hefty real_qp = qp->real_qp; 13910e0ec7e0SSean Hefty if (real_qp == qp) 13920e0ec7e0SSean Hefty return -EINVAL; 13930e0ec7e0SSean Hefty 13940e0ec7e0SSean Hefty spin_lock_irqsave(&real_qp->device->event_handler_lock, flags); 13950e0ec7e0SSean Hefty list_del(&qp->open_list); 13960e0ec7e0SSean Hefty spin_unlock_irqrestore(&real_qp->device->event_handler_lock, flags); 13970e0ec7e0SSean Hefty 13980e0ec7e0SSean Hefty atomic_dec(&real_qp->usecnt); 1399d291f1a6SDaniel Jurgens ib_close_shared_qp_security(qp->qp_sec); 14000e0ec7e0SSean Hefty kfree(qp); 14010e0ec7e0SSean Hefty 14020e0ec7e0SSean Hefty return 0; 14030e0ec7e0SSean Hefty } 14040e0ec7e0SSean Hefty EXPORT_SYMBOL(ib_close_qp); 14050e0ec7e0SSean Hefty 14060e0ec7e0SSean Hefty static int __ib_destroy_shared_qp(struct ib_qp *qp) 14070e0ec7e0SSean Hefty { 14080e0ec7e0SSean Hefty struct ib_xrcd *xrcd; 14090e0ec7e0SSean Hefty struct ib_qp *real_qp; 14100e0ec7e0SSean Hefty int ret; 14110e0ec7e0SSean Hefty 14120e0ec7e0SSean Hefty real_qp = qp->real_qp; 14130e0ec7e0SSean Hefty xrcd = real_qp->xrcd; 14140e0ec7e0SSean Hefty 14150e0ec7e0SSean Hefty mutex_lock(&xrcd->tgt_qp_mutex); 14160e0ec7e0SSean Hefty ib_close_qp(qp); 14170e0ec7e0SSean Hefty if (atomic_read(&real_qp->usecnt) == 0) 14180e0ec7e0SSean Hefty list_del(&real_qp->xrcd_list); 14190e0ec7e0SSean Hefty else 14200e0ec7e0SSean Hefty real_qp = NULL; 14210e0ec7e0SSean Hefty mutex_unlock(&xrcd->tgt_qp_mutex); 14220e0ec7e0SSean Hefty 14230e0ec7e0SSean Hefty if (real_qp) { 14240e0ec7e0SSean Hefty ret = ib_destroy_qp(real_qp); 14250e0ec7e0SSean Hefty if (!ret) 14260e0ec7e0SSean Hefty atomic_dec(&xrcd->usecnt); 14270e0ec7e0SSean Hefty else 14280e0ec7e0SSean Hefty __ib_insert_xrcd_qp(xrcd, real_qp); 14290e0ec7e0SSean Hefty } 14300e0ec7e0SSean Hefty 14310e0ec7e0SSean Hefty return 0; 14320e0ec7e0SSean Hefty } 14330e0ec7e0SSean Hefty 14341da177e4SLinus Torvalds int ib_destroy_qp(struct ib_qp *qp) 14351da177e4SLinus Torvalds { 14361da177e4SLinus Torvalds struct ib_pd *pd; 14371da177e4SLinus Torvalds struct ib_cq *scq, *rcq; 14381da177e4SLinus Torvalds struct ib_srq *srq; 1439a9017e23SYishai Hadas struct ib_rwq_ind_table *ind_tbl; 1440d291f1a6SDaniel Jurgens struct ib_qp_security *sec; 14411da177e4SLinus Torvalds int ret; 14421da177e4SLinus Torvalds 1443fffb0383SChristoph Hellwig WARN_ON_ONCE(qp->mrs_used > 0); 1444fffb0383SChristoph Hellwig 14450e0ec7e0SSean Hefty if (atomic_read(&qp->usecnt)) 14460e0ec7e0SSean Hefty return -EBUSY; 14470e0ec7e0SSean Hefty 14480e0ec7e0SSean Hefty if (qp->real_qp != qp) 14490e0ec7e0SSean Hefty return __ib_destroy_shared_qp(qp); 14500e0ec7e0SSean Hefty 14511da177e4SLinus Torvalds pd = qp->pd; 14521da177e4SLinus Torvalds scq = qp->send_cq; 14531da177e4SLinus Torvalds rcq = qp->recv_cq; 14541da177e4SLinus Torvalds srq = qp->srq; 1455a9017e23SYishai Hadas ind_tbl = qp->rwq_ind_tbl; 1456d291f1a6SDaniel Jurgens sec = qp->qp_sec; 1457d291f1a6SDaniel Jurgens if (sec) 1458d291f1a6SDaniel Jurgens ib_destroy_qp_security_begin(sec); 14591da177e4SLinus Torvalds 1460a060b562SChristoph Hellwig if (!qp->uobject) 1461a060b562SChristoph Hellwig rdma_rw_cleanup_mrs(qp); 1462a060b562SChristoph Hellwig 14631da177e4SLinus Torvalds ret = qp->device->destroy_qp(qp); 14641da177e4SLinus Torvalds if (!ret) { 1465b42b63cfSSean Hefty if (pd) 14661da177e4SLinus Torvalds atomic_dec(&pd->usecnt); 1467b42b63cfSSean Hefty if (scq) 14681da177e4SLinus Torvalds atomic_dec(&scq->usecnt); 1469b42b63cfSSean Hefty if (rcq) 14701da177e4SLinus Torvalds atomic_dec(&rcq->usecnt); 14711da177e4SLinus Torvalds if (srq) 14721da177e4SLinus Torvalds atomic_dec(&srq->usecnt); 1473a9017e23SYishai Hadas if (ind_tbl) 1474a9017e23SYishai Hadas atomic_dec(&ind_tbl->usecnt); 1475d291f1a6SDaniel Jurgens if (sec) 1476d291f1a6SDaniel Jurgens ib_destroy_qp_security_end(sec); 1477d291f1a6SDaniel Jurgens } else { 1478d291f1a6SDaniel Jurgens if (sec) 1479d291f1a6SDaniel Jurgens ib_destroy_qp_security_abort(sec); 14801da177e4SLinus Torvalds } 14811da177e4SLinus Torvalds 14821da177e4SLinus Torvalds return ret; 14831da177e4SLinus Torvalds } 14841da177e4SLinus Torvalds EXPORT_SYMBOL(ib_destroy_qp); 14851da177e4SLinus Torvalds 14861da177e4SLinus Torvalds /* Completion queues */ 14871da177e4SLinus Torvalds 14881da177e4SLinus Torvalds struct ib_cq *ib_create_cq(struct ib_device *device, 14891da177e4SLinus Torvalds ib_comp_handler comp_handler, 14901da177e4SLinus Torvalds void (*event_handler)(struct ib_event *, void *), 14918e37210bSMatan Barak void *cq_context, 14928e37210bSMatan Barak const struct ib_cq_init_attr *cq_attr) 14931da177e4SLinus Torvalds { 14941da177e4SLinus Torvalds struct ib_cq *cq; 14951da177e4SLinus Torvalds 14968e37210bSMatan Barak cq = device->create_cq(device, cq_attr, NULL, NULL); 14971da177e4SLinus Torvalds 14981da177e4SLinus Torvalds if (!IS_ERR(cq)) { 14991da177e4SLinus Torvalds cq->device = device; 1500b5e81bf5SRoland Dreier cq->uobject = NULL; 15011da177e4SLinus Torvalds cq->comp_handler = comp_handler; 15021da177e4SLinus Torvalds cq->event_handler = event_handler; 15031da177e4SLinus Torvalds cq->cq_context = cq_context; 15041da177e4SLinus Torvalds atomic_set(&cq->usecnt, 0); 15051da177e4SLinus Torvalds } 15061da177e4SLinus Torvalds 15071da177e4SLinus Torvalds return cq; 15081da177e4SLinus Torvalds } 15091da177e4SLinus Torvalds EXPORT_SYMBOL(ib_create_cq); 15101da177e4SLinus Torvalds 15112dd57162SEli Cohen int ib_modify_cq(struct ib_cq *cq, u16 cq_count, u16 cq_period) 15122dd57162SEli Cohen { 15132dd57162SEli Cohen return cq->device->modify_cq ? 15142dd57162SEli Cohen cq->device->modify_cq(cq, cq_count, cq_period) : -ENOSYS; 15152dd57162SEli Cohen } 15162dd57162SEli Cohen EXPORT_SYMBOL(ib_modify_cq); 15172dd57162SEli Cohen 15181da177e4SLinus Torvalds int ib_destroy_cq(struct ib_cq *cq) 15191da177e4SLinus Torvalds { 15201da177e4SLinus Torvalds if (atomic_read(&cq->usecnt)) 15211da177e4SLinus Torvalds return -EBUSY; 15221da177e4SLinus Torvalds 15231da177e4SLinus Torvalds return cq->device->destroy_cq(cq); 15241da177e4SLinus Torvalds } 15251da177e4SLinus Torvalds EXPORT_SYMBOL(ib_destroy_cq); 15261da177e4SLinus Torvalds 1527a74cd4afSRoland Dreier int ib_resize_cq(struct ib_cq *cq, int cqe) 15281da177e4SLinus Torvalds { 152940de2e54SRoland Dreier return cq->device->resize_cq ? 153033b9b3eeSRoland Dreier cq->device->resize_cq(cq, cqe, NULL) : -ENOSYS; 15311da177e4SLinus Torvalds } 15321da177e4SLinus Torvalds EXPORT_SYMBOL(ib_resize_cq); 15331da177e4SLinus Torvalds 15341da177e4SLinus Torvalds /* Memory regions */ 15351da177e4SLinus Torvalds 15361da177e4SLinus Torvalds int ib_dereg_mr(struct ib_mr *mr) 15371da177e4SLinus Torvalds { 1538ab67ed8dSChristoph Hellwig struct ib_pd *pd = mr->pd; 15391da177e4SLinus Torvalds int ret; 15401da177e4SLinus Torvalds 15411da177e4SLinus Torvalds ret = mr->device->dereg_mr(mr); 15421da177e4SLinus Torvalds if (!ret) 15431da177e4SLinus Torvalds atomic_dec(&pd->usecnt); 15441da177e4SLinus Torvalds 15451da177e4SLinus Torvalds return ret; 15461da177e4SLinus Torvalds } 15471da177e4SLinus Torvalds EXPORT_SYMBOL(ib_dereg_mr); 15481da177e4SLinus Torvalds 15499bee178bSSagi Grimberg /** 15509bee178bSSagi Grimberg * ib_alloc_mr() - Allocates a memory region 15519bee178bSSagi Grimberg * @pd: protection domain associated with the region 15529bee178bSSagi Grimberg * @mr_type: memory region type 15539bee178bSSagi Grimberg * @max_num_sg: maximum sg entries available for registration. 15549bee178bSSagi Grimberg * 15559bee178bSSagi Grimberg * Notes: 15569bee178bSSagi Grimberg * Memory registeration page/sg lists must not exceed max_num_sg. 15579bee178bSSagi Grimberg * For mr_type IB_MR_TYPE_MEM_REG, the total length cannot exceed 15589bee178bSSagi Grimberg * max_num_sg * used_page_size. 15599bee178bSSagi Grimberg * 15609bee178bSSagi Grimberg */ 15619bee178bSSagi Grimberg struct ib_mr *ib_alloc_mr(struct ib_pd *pd, 15629bee178bSSagi Grimberg enum ib_mr_type mr_type, 15639bee178bSSagi Grimberg u32 max_num_sg) 156417cd3a2dSSagi Grimberg { 156517cd3a2dSSagi Grimberg struct ib_mr *mr; 156617cd3a2dSSagi Grimberg 1567d9f272c5SSagi Grimberg if (!pd->device->alloc_mr) 156817cd3a2dSSagi Grimberg return ERR_PTR(-ENOSYS); 156917cd3a2dSSagi Grimberg 1570d9f272c5SSagi Grimberg mr = pd->device->alloc_mr(pd, mr_type, max_num_sg); 157117cd3a2dSSagi Grimberg if (!IS_ERR(mr)) { 157217cd3a2dSSagi Grimberg mr->device = pd->device; 157317cd3a2dSSagi Grimberg mr->pd = pd; 157417cd3a2dSSagi Grimberg mr->uobject = NULL; 157517cd3a2dSSagi Grimberg atomic_inc(&pd->usecnt); 1576d4a85c30SSteve Wise mr->need_inval = false; 157717cd3a2dSSagi Grimberg } 157817cd3a2dSSagi Grimberg 157917cd3a2dSSagi Grimberg return mr; 158017cd3a2dSSagi Grimberg } 15819bee178bSSagi Grimberg EXPORT_SYMBOL(ib_alloc_mr); 158200f7ec36SSteve Wise 15831da177e4SLinus Torvalds /* "Fast" memory regions */ 15841da177e4SLinus Torvalds 15851da177e4SLinus Torvalds struct ib_fmr *ib_alloc_fmr(struct ib_pd *pd, 15861da177e4SLinus Torvalds int mr_access_flags, 15871da177e4SLinus Torvalds struct ib_fmr_attr *fmr_attr) 15881da177e4SLinus Torvalds { 15891da177e4SLinus Torvalds struct ib_fmr *fmr; 15901da177e4SLinus Torvalds 15911da177e4SLinus Torvalds if (!pd->device->alloc_fmr) 15921da177e4SLinus Torvalds return ERR_PTR(-ENOSYS); 15931da177e4SLinus Torvalds 15941da177e4SLinus Torvalds fmr = pd->device->alloc_fmr(pd, mr_access_flags, fmr_attr); 15951da177e4SLinus Torvalds if (!IS_ERR(fmr)) { 15961da177e4SLinus Torvalds fmr->device = pd->device; 15971da177e4SLinus Torvalds fmr->pd = pd; 15981da177e4SLinus Torvalds atomic_inc(&pd->usecnt); 15991da177e4SLinus Torvalds } 16001da177e4SLinus Torvalds 16011da177e4SLinus Torvalds return fmr; 16021da177e4SLinus Torvalds } 16031da177e4SLinus Torvalds EXPORT_SYMBOL(ib_alloc_fmr); 16041da177e4SLinus Torvalds 16051da177e4SLinus Torvalds int ib_unmap_fmr(struct list_head *fmr_list) 16061da177e4SLinus Torvalds { 16071da177e4SLinus Torvalds struct ib_fmr *fmr; 16081da177e4SLinus Torvalds 16091da177e4SLinus Torvalds if (list_empty(fmr_list)) 16101da177e4SLinus Torvalds return 0; 16111da177e4SLinus Torvalds 16121da177e4SLinus Torvalds fmr = list_entry(fmr_list->next, struct ib_fmr, list); 16131da177e4SLinus Torvalds return fmr->device->unmap_fmr(fmr_list); 16141da177e4SLinus Torvalds } 16151da177e4SLinus Torvalds EXPORT_SYMBOL(ib_unmap_fmr); 16161da177e4SLinus Torvalds 16171da177e4SLinus Torvalds int ib_dealloc_fmr(struct ib_fmr *fmr) 16181da177e4SLinus Torvalds { 16191da177e4SLinus Torvalds struct ib_pd *pd; 16201da177e4SLinus Torvalds int ret; 16211da177e4SLinus Torvalds 16221da177e4SLinus Torvalds pd = fmr->pd; 16231da177e4SLinus Torvalds ret = fmr->device->dealloc_fmr(fmr); 16241da177e4SLinus Torvalds if (!ret) 16251da177e4SLinus Torvalds atomic_dec(&pd->usecnt); 16261da177e4SLinus Torvalds 16271da177e4SLinus Torvalds return ret; 16281da177e4SLinus Torvalds } 16291da177e4SLinus Torvalds EXPORT_SYMBOL(ib_dealloc_fmr); 16301da177e4SLinus Torvalds 16311da177e4SLinus Torvalds /* Multicast groups */ 16321da177e4SLinus Torvalds 163352363335SNoa Osherovich static bool is_valid_mcast_lid(struct ib_qp *qp, u16 lid) 163452363335SNoa Osherovich { 163552363335SNoa Osherovich struct ib_qp_init_attr init_attr = {}; 163652363335SNoa Osherovich struct ib_qp_attr attr = {}; 163752363335SNoa Osherovich int num_eth_ports = 0; 163852363335SNoa Osherovich int port; 163952363335SNoa Osherovich 164052363335SNoa Osherovich /* If QP state >= init, it is assigned to a port and we can check this 164152363335SNoa Osherovich * port only. 164252363335SNoa Osherovich */ 164352363335SNoa Osherovich if (!ib_query_qp(qp, &attr, IB_QP_STATE | IB_QP_PORT, &init_attr)) { 164452363335SNoa Osherovich if (attr.qp_state >= IB_QPS_INIT) { 164552363335SNoa Osherovich if (qp->device->get_link_layer(qp->device, attr.port_num) != 164652363335SNoa Osherovich IB_LINK_LAYER_INFINIBAND) 164752363335SNoa Osherovich return true; 164852363335SNoa Osherovich goto lid_check; 164952363335SNoa Osherovich } 165052363335SNoa Osherovich } 165152363335SNoa Osherovich 165252363335SNoa Osherovich /* Can't get a quick answer, iterate over all ports */ 165352363335SNoa Osherovich for (port = 0; port < qp->device->phys_port_cnt; port++) 165452363335SNoa Osherovich if (qp->device->get_link_layer(qp->device, port) != 165552363335SNoa Osherovich IB_LINK_LAYER_INFINIBAND) 165652363335SNoa Osherovich num_eth_ports++; 165752363335SNoa Osherovich 165852363335SNoa Osherovich /* If we have at lease one Ethernet port, RoCE annex declares that 165952363335SNoa Osherovich * multicast LID should be ignored. We can't tell at this step if the 166052363335SNoa Osherovich * QP belongs to an IB or Ethernet port. 166152363335SNoa Osherovich */ 166252363335SNoa Osherovich if (num_eth_ports) 166352363335SNoa Osherovich return true; 166452363335SNoa Osherovich 166552363335SNoa Osherovich /* If all the ports are IB, we can check according to IB spec. */ 166652363335SNoa Osherovich lid_check: 166752363335SNoa Osherovich return !(lid < be16_to_cpu(IB_MULTICAST_LID_BASE) || 166852363335SNoa Osherovich lid == be16_to_cpu(IB_LID_PERMISSIVE)); 166952363335SNoa Osherovich } 167052363335SNoa Osherovich 16711da177e4SLinus Torvalds int ib_attach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid) 16721da177e4SLinus Torvalds { 1673c3bccbfbSOr Gerlitz int ret; 1674c3bccbfbSOr Gerlitz 16750c33aeedSJack Morgenstein if (!qp->device->attach_mcast) 16760c33aeedSJack Morgenstein return -ENOSYS; 1677be1d325aSNoa Osherovich 1678be1d325aSNoa Osherovich if (!rdma_is_multicast_addr((struct in6_addr *)gid->raw) || 1679be1d325aSNoa Osherovich qp->qp_type != IB_QPT_UD || !is_valid_mcast_lid(qp, lid)) 16800c33aeedSJack Morgenstein return -EINVAL; 16810c33aeedSJack Morgenstein 1682c3bccbfbSOr Gerlitz ret = qp->device->attach_mcast(qp, gid, lid); 1683c3bccbfbSOr Gerlitz if (!ret) 1684c3bccbfbSOr Gerlitz atomic_inc(&qp->usecnt); 1685c3bccbfbSOr Gerlitz return ret; 16861da177e4SLinus Torvalds } 16871da177e4SLinus Torvalds EXPORT_SYMBOL(ib_attach_mcast); 16881da177e4SLinus Torvalds 16891da177e4SLinus Torvalds int ib_detach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid) 16901da177e4SLinus Torvalds { 1691c3bccbfbSOr Gerlitz int ret; 1692c3bccbfbSOr Gerlitz 16930c33aeedSJack Morgenstein if (!qp->device->detach_mcast) 16940c33aeedSJack Morgenstein return -ENOSYS; 1695be1d325aSNoa Osherovich 1696be1d325aSNoa Osherovich if (!rdma_is_multicast_addr((struct in6_addr *)gid->raw) || 1697be1d325aSNoa Osherovich qp->qp_type != IB_QPT_UD || !is_valid_mcast_lid(qp, lid)) 16980c33aeedSJack Morgenstein return -EINVAL; 16990c33aeedSJack Morgenstein 1700c3bccbfbSOr Gerlitz ret = qp->device->detach_mcast(qp, gid, lid); 1701c3bccbfbSOr Gerlitz if (!ret) 1702c3bccbfbSOr Gerlitz atomic_dec(&qp->usecnt); 1703c3bccbfbSOr Gerlitz return ret; 17041da177e4SLinus Torvalds } 17051da177e4SLinus Torvalds EXPORT_SYMBOL(ib_detach_mcast); 170659991f94SSean Hefty 170759991f94SSean Hefty struct ib_xrcd *ib_alloc_xrcd(struct ib_device *device) 170859991f94SSean Hefty { 170959991f94SSean Hefty struct ib_xrcd *xrcd; 171059991f94SSean Hefty 171159991f94SSean Hefty if (!device->alloc_xrcd) 171259991f94SSean Hefty return ERR_PTR(-ENOSYS); 171359991f94SSean Hefty 171459991f94SSean Hefty xrcd = device->alloc_xrcd(device, NULL, NULL); 171559991f94SSean Hefty if (!IS_ERR(xrcd)) { 171659991f94SSean Hefty xrcd->device = device; 171753d0bd1eSSean Hefty xrcd->inode = NULL; 171859991f94SSean Hefty atomic_set(&xrcd->usecnt, 0); 1719d3d72d90SSean Hefty mutex_init(&xrcd->tgt_qp_mutex); 1720d3d72d90SSean Hefty INIT_LIST_HEAD(&xrcd->tgt_qp_list); 172159991f94SSean Hefty } 172259991f94SSean Hefty 172359991f94SSean Hefty return xrcd; 172459991f94SSean Hefty } 172559991f94SSean Hefty EXPORT_SYMBOL(ib_alloc_xrcd); 172659991f94SSean Hefty 172759991f94SSean Hefty int ib_dealloc_xrcd(struct ib_xrcd *xrcd) 172859991f94SSean Hefty { 1729d3d72d90SSean Hefty struct ib_qp *qp; 1730d3d72d90SSean Hefty int ret; 1731d3d72d90SSean Hefty 173259991f94SSean Hefty if (atomic_read(&xrcd->usecnt)) 173359991f94SSean Hefty return -EBUSY; 173459991f94SSean Hefty 1735d3d72d90SSean Hefty while (!list_empty(&xrcd->tgt_qp_list)) { 1736d3d72d90SSean Hefty qp = list_entry(xrcd->tgt_qp_list.next, struct ib_qp, xrcd_list); 1737d3d72d90SSean Hefty ret = ib_destroy_qp(qp); 1738d3d72d90SSean Hefty if (ret) 1739d3d72d90SSean Hefty return ret; 1740d3d72d90SSean Hefty } 1741d3d72d90SSean Hefty 174259991f94SSean Hefty return xrcd->device->dealloc_xrcd(xrcd); 174359991f94SSean Hefty } 174459991f94SSean Hefty EXPORT_SYMBOL(ib_dealloc_xrcd); 1745319a441dSHadar Hen Zion 17465fd251c8SYishai Hadas /** 17475fd251c8SYishai Hadas * ib_create_wq - Creates a WQ associated with the specified protection 17485fd251c8SYishai Hadas * domain. 17495fd251c8SYishai Hadas * @pd: The protection domain associated with the WQ. 17505fd251c8SYishai Hadas * @wq_init_attr: A list of initial attributes required to create the 17515fd251c8SYishai Hadas * WQ. If WQ creation succeeds, then the attributes are updated to 17525fd251c8SYishai Hadas * the actual capabilities of the created WQ. 17535fd251c8SYishai Hadas * 17545fd251c8SYishai Hadas * wq_init_attr->max_wr and wq_init_attr->max_sge determine 17555fd251c8SYishai Hadas * the requested size of the WQ, and set to the actual values allocated 17565fd251c8SYishai Hadas * on return. 17575fd251c8SYishai Hadas * If ib_create_wq() succeeds, then max_wr and max_sge will always be 17585fd251c8SYishai Hadas * at least as large as the requested values. 17595fd251c8SYishai Hadas */ 17605fd251c8SYishai Hadas struct ib_wq *ib_create_wq(struct ib_pd *pd, 17615fd251c8SYishai Hadas struct ib_wq_init_attr *wq_attr) 17625fd251c8SYishai Hadas { 17635fd251c8SYishai Hadas struct ib_wq *wq; 17645fd251c8SYishai Hadas 17655fd251c8SYishai Hadas if (!pd->device->create_wq) 17665fd251c8SYishai Hadas return ERR_PTR(-ENOSYS); 17675fd251c8SYishai Hadas 17685fd251c8SYishai Hadas wq = pd->device->create_wq(pd, wq_attr, NULL); 17695fd251c8SYishai Hadas if (!IS_ERR(wq)) { 17705fd251c8SYishai Hadas wq->event_handler = wq_attr->event_handler; 17715fd251c8SYishai Hadas wq->wq_context = wq_attr->wq_context; 17725fd251c8SYishai Hadas wq->wq_type = wq_attr->wq_type; 17735fd251c8SYishai Hadas wq->cq = wq_attr->cq; 17745fd251c8SYishai Hadas wq->device = pd->device; 17755fd251c8SYishai Hadas wq->pd = pd; 17765fd251c8SYishai Hadas wq->uobject = NULL; 17775fd251c8SYishai Hadas atomic_inc(&pd->usecnt); 17785fd251c8SYishai Hadas atomic_inc(&wq_attr->cq->usecnt); 17795fd251c8SYishai Hadas atomic_set(&wq->usecnt, 0); 17805fd251c8SYishai Hadas } 17815fd251c8SYishai Hadas return wq; 17825fd251c8SYishai Hadas } 17835fd251c8SYishai Hadas EXPORT_SYMBOL(ib_create_wq); 17845fd251c8SYishai Hadas 17855fd251c8SYishai Hadas /** 17865fd251c8SYishai Hadas * ib_destroy_wq - Destroys the specified WQ. 17875fd251c8SYishai Hadas * @wq: The WQ to destroy. 17885fd251c8SYishai Hadas */ 17895fd251c8SYishai Hadas int ib_destroy_wq(struct ib_wq *wq) 17905fd251c8SYishai Hadas { 17915fd251c8SYishai Hadas int err; 17925fd251c8SYishai Hadas struct ib_cq *cq = wq->cq; 17935fd251c8SYishai Hadas struct ib_pd *pd = wq->pd; 17945fd251c8SYishai Hadas 17955fd251c8SYishai Hadas if (atomic_read(&wq->usecnt)) 17965fd251c8SYishai Hadas return -EBUSY; 17975fd251c8SYishai Hadas 17985fd251c8SYishai Hadas err = wq->device->destroy_wq(wq); 17995fd251c8SYishai Hadas if (!err) { 18005fd251c8SYishai Hadas atomic_dec(&pd->usecnt); 18015fd251c8SYishai Hadas atomic_dec(&cq->usecnt); 18025fd251c8SYishai Hadas } 18035fd251c8SYishai Hadas return err; 18045fd251c8SYishai Hadas } 18055fd251c8SYishai Hadas EXPORT_SYMBOL(ib_destroy_wq); 18065fd251c8SYishai Hadas 18075fd251c8SYishai Hadas /** 18085fd251c8SYishai Hadas * ib_modify_wq - Modifies the specified WQ. 18095fd251c8SYishai Hadas * @wq: The WQ to modify. 18105fd251c8SYishai Hadas * @wq_attr: On input, specifies the WQ attributes to modify. 18115fd251c8SYishai Hadas * @wq_attr_mask: A bit-mask used to specify which attributes of the WQ 18125fd251c8SYishai Hadas * are being modified. 18135fd251c8SYishai Hadas * On output, the current values of selected WQ attributes are returned. 18145fd251c8SYishai Hadas */ 18155fd251c8SYishai Hadas int ib_modify_wq(struct ib_wq *wq, struct ib_wq_attr *wq_attr, 18165fd251c8SYishai Hadas u32 wq_attr_mask) 18175fd251c8SYishai Hadas { 18185fd251c8SYishai Hadas int err; 18195fd251c8SYishai Hadas 18205fd251c8SYishai Hadas if (!wq->device->modify_wq) 18215fd251c8SYishai Hadas return -ENOSYS; 18225fd251c8SYishai Hadas 18235fd251c8SYishai Hadas err = wq->device->modify_wq(wq, wq_attr, wq_attr_mask, NULL); 18245fd251c8SYishai Hadas return err; 18255fd251c8SYishai Hadas } 18265fd251c8SYishai Hadas EXPORT_SYMBOL(ib_modify_wq); 18275fd251c8SYishai Hadas 18286d39786bSYishai Hadas /* 18296d39786bSYishai Hadas * ib_create_rwq_ind_table - Creates a RQ Indirection Table. 18306d39786bSYishai Hadas * @device: The device on which to create the rwq indirection table. 18316d39786bSYishai Hadas * @ib_rwq_ind_table_init_attr: A list of initial attributes required to 18326d39786bSYishai Hadas * create the Indirection Table. 18336d39786bSYishai Hadas * 18346d39786bSYishai Hadas * Note: The life time of ib_rwq_ind_table_init_attr->ind_tbl is not less 18356d39786bSYishai Hadas * than the created ib_rwq_ind_table object and the caller is responsible 18366d39786bSYishai Hadas * for its memory allocation/free. 18376d39786bSYishai Hadas */ 18386d39786bSYishai Hadas struct ib_rwq_ind_table *ib_create_rwq_ind_table(struct ib_device *device, 18396d39786bSYishai Hadas struct ib_rwq_ind_table_init_attr *init_attr) 18406d39786bSYishai Hadas { 18416d39786bSYishai Hadas struct ib_rwq_ind_table *rwq_ind_table; 18426d39786bSYishai Hadas int i; 18436d39786bSYishai Hadas u32 table_size; 18446d39786bSYishai Hadas 18456d39786bSYishai Hadas if (!device->create_rwq_ind_table) 18466d39786bSYishai Hadas return ERR_PTR(-ENOSYS); 18476d39786bSYishai Hadas 18486d39786bSYishai Hadas table_size = (1 << init_attr->log_ind_tbl_size); 18496d39786bSYishai Hadas rwq_ind_table = device->create_rwq_ind_table(device, 18506d39786bSYishai Hadas init_attr, NULL); 18516d39786bSYishai Hadas if (IS_ERR(rwq_ind_table)) 18526d39786bSYishai Hadas return rwq_ind_table; 18536d39786bSYishai Hadas 18546d39786bSYishai Hadas rwq_ind_table->ind_tbl = init_attr->ind_tbl; 18556d39786bSYishai Hadas rwq_ind_table->log_ind_tbl_size = init_attr->log_ind_tbl_size; 18566d39786bSYishai Hadas rwq_ind_table->device = device; 18576d39786bSYishai Hadas rwq_ind_table->uobject = NULL; 18586d39786bSYishai Hadas atomic_set(&rwq_ind_table->usecnt, 0); 18596d39786bSYishai Hadas 18606d39786bSYishai Hadas for (i = 0; i < table_size; i++) 18616d39786bSYishai Hadas atomic_inc(&rwq_ind_table->ind_tbl[i]->usecnt); 18626d39786bSYishai Hadas 18636d39786bSYishai Hadas return rwq_ind_table; 18646d39786bSYishai Hadas } 18656d39786bSYishai Hadas EXPORT_SYMBOL(ib_create_rwq_ind_table); 18666d39786bSYishai Hadas 18676d39786bSYishai Hadas /* 18686d39786bSYishai Hadas * ib_destroy_rwq_ind_table - Destroys the specified Indirection Table. 18696d39786bSYishai Hadas * @wq_ind_table: The Indirection Table to destroy. 18706d39786bSYishai Hadas */ 18716d39786bSYishai Hadas int ib_destroy_rwq_ind_table(struct ib_rwq_ind_table *rwq_ind_table) 18726d39786bSYishai Hadas { 18736d39786bSYishai Hadas int err, i; 18746d39786bSYishai Hadas u32 table_size = (1 << rwq_ind_table->log_ind_tbl_size); 18756d39786bSYishai Hadas struct ib_wq **ind_tbl = rwq_ind_table->ind_tbl; 18766d39786bSYishai Hadas 18776d39786bSYishai Hadas if (atomic_read(&rwq_ind_table->usecnt)) 18786d39786bSYishai Hadas return -EBUSY; 18796d39786bSYishai Hadas 18806d39786bSYishai Hadas err = rwq_ind_table->device->destroy_rwq_ind_table(rwq_ind_table); 18816d39786bSYishai Hadas if (!err) { 18826d39786bSYishai Hadas for (i = 0; i < table_size; i++) 18836d39786bSYishai Hadas atomic_dec(&ind_tbl[i]->usecnt); 18846d39786bSYishai Hadas } 18856d39786bSYishai Hadas 18866d39786bSYishai Hadas return err; 18876d39786bSYishai Hadas } 18886d39786bSYishai Hadas EXPORT_SYMBOL(ib_destroy_rwq_ind_table); 18896d39786bSYishai Hadas 1890319a441dSHadar Hen Zion struct ib_flow *ib_create_flow(struct ib_qp *qp, 1891319a441dSHadar Hen Zion struct ib_flow_attr *flow_attr, 1892319a441dSHadar Hen Zion int domain) 1893319a441dSHadar Hen Zion { 1894319a441dSHadar Hen Zion struct ib_flow *flow_id; 1895319a441dSHadar Hen Zion if (!qp->device->create_flow) 1896319a441dSHadar Hen Zion return ERR_PTR(-ENOSYS); 1897319a441dSHadar Hen Zion 1898319a441dSHadar Hen Zion flow_id = qp->device->create_flow(qp, flow_attr, domain); 18998ecc7985SMark Bloch if (!IS_ERR(flow_id)) { 1900319a441dSHadar Hen Zion atomic_inc(&qp->usecnt); 19018ecc7985SMark Bloch flow_id->qp = qp; 19028ecc7985SMark Bloch } 1903319a441dSHadar Hen Zion return flow_id; 1904319a441dSHadar Hen Zion } 1905319a441dSHadar Hen Zion EXPORT_SYMBOL(ib_create_flow); 1906319a441dSHadar Hen Zion 1907319a441dSHadar Hen Zion int ib_destroy_flow(struct ib_flow *flow_id) 1908319a441dSHadar Hen Zion { 1909319a441dSHadar Hen Zion int err; 1910319a441dSHadar Hen Zion struct ib_qp *qp = flow_id->qp; 1911319a441dSHadar Hen Zion 1912319a441dSHadar Hen Zion err = qp->device->destroy_flow(flow_id); 1913319a441dSHadar Hen Zion if (!err) 1914319a441dSHadar Hen Zion atomic_dec(&qp->usecnt); 1915319a441dSHadar Hen Zion return err; 1916319a441dSHadar Hen Zion } 1917319a441dSHadar Hen Zion EXPORT_SYMBOL(ib_destroy_flow); 19181b01d335SSagi Grimberg 19191b01d335SSagi Grimberg int ib_check_mr_status(struct ib_mr *mr, u32 check_mask, 19201b01d335SSagi Grimberg struct ib_mr_status *mr_status) 19211b01d335SSagi Grimberg { 19221b01d335SSagi Grimberg return mr->device->check_mr_status ? 19231b01d335SSagi Grimberg mr->device->check_mr_status(mr, check_mask, mr_status) : -ENOSYS; 19241b01d335SSagi Grimberg } 19251b01d335SSagi Grimberg EXPORT_SYMBOL(ib_check_mr_status); 19264c67e2bfSSagi Grimberg 192750174a7fSEli Cohen int ib_set_vf_link_state(struct ib_device *device, int vf, u8 port, 192850174a7fSEli Cohen int state) 192950174a7fSEli Cohen { 193050174a7fSEli Cohen if (!device->set_vf_link_state) 193150174a7fSEli Cohen return -ENOSYS; 193250174a7fSEli Cohen 193350174a7fSEli Cohen return device->set_vf_link_state(device, vf, port, state); 193450174a7fSEli Cohen } 193550174a7fSEli Cohen EXPORT_SYMBOL(ib_set_vf_link_state); 193650174a7fSEli Cohen 193750174a7fSEli Cohen int ib_get_vf_config(struct ib_device *device, int vf, u8 port, 193850174a7fSEli Cohen struct ifla_vf_info *info) 193950174a7fSEli Cohen { 194050174a7fSEli Cohen if (!device->get_vf_config) 194150174a7fSEli Cohen return -ENOSYS; 194250174a7fSEli Cohen 194350174a7fSEli Cohen return device->get_vf_config(device, vf, port, info); 194450174a7fSEli Cohen } 194550174a7fSEli Cohen EXPORT_SYMBOL(ib_get_vf_config); 194650174a7fSEli Cohen 194750174a7fSEli Cohen int ib_get_vf_stats(struct ib_device *device, int vf, u8 port, 194850174a7fSEli Cohen struct ifla_vf_stats *stats) 194950174a7fSEli Cohen { 195050174a7fSEli Cohen if (!device->get_vf_stats) 195150174a7fSEli Cohen return -ENOSYS; 195250174a7fSEli Cohen 195350174a7fSEli Cohen return device->get_vf_stats(device, vf, port, stats); 195450174a7fSEli Cohen } 195550174a7fSEli Cohen EXPORT_SYMBOL(ib_get_vf_stats); 195650174a7fSEli Cohen 195750174a7fSEli Cohen int ib_set_vf_guid(struct ib_device *device, int vf, u8 port, u64 guid, 195850174a7fSEli Cohen int type) 195950174a7fSEli Cohen { 196050174a7fSEli Cohen if (!device->set_vf_guid) 196150174a7fSEli Cohen return -ENOSYS; 196250174a7fSEli Cohen 196350174a7fSEli Cohen return device->set_vf_guid(device, vf, port, guid, type); 196450174a7fSEli Cohen } 196550174a7fSEli Cohen EXPORT_SYMBOL(ib_set_vf_guid); 196650174a7fSEli Cohen 19674c67e2bfSSagi Grimberg /** 19684c67e2bfSSagi Grimberg * ib_map_mr_sg() - Map the largest prefix of a dma mapped SG list 19694c67e2bfSSagi Grimberg * and set it the memory region. 19704c67e2bfSSagi Grimberg * @mr: memory region 19714c67e2bfSSagi Grimberg * @sg: dma mapped scatterlist 19724c67e2bfSSagi Grimberg * @sg_nents: number of entries in sg 1973ff2ba993SChristoph Hellwig * @sg_offset: offset in bytes into sg 19744c67e2bfSSagi Grimberg * @page_size: page vector desired page size 19754c67e2bfSSagi Grimberg * 19764c67e2bfSSagi Grimberg * Constraints: 19774c67e2bfSSagi Grimberg * - The first sg element is allowed to have an offset. 197852746129SBart Van Assche * - Each sg element must either be aligned to page_size or virtually 197952746129SBart Van Assche * contiguous to the previous element. In case an sg element has a 198052746129SBart Van Assche * non-contiguous offset, the mapping prefix will not include it. 19814c67e2bfSSagi Grimberg * - The last sg element is allowed to have length less than page_size. 19824c67e2bfSSagi Grimberg * - If sg_nents total byte length exceeds the mr max_num_sge * page_size 19834c67e2bfSSagi Grimberg * then only max_num_sg entries will be mapped. 198452746129SBart Van Assche * - If the MR was allocated with type IB_MR_TYPE_SG_GAPS, none of these 1985f5aa9159SSagi Grimberg * constraints holds and the page_size argument is ignored. 19864c67e2bfSSagi Grimberg * 19874c67e2bfSSagi Grimberg * Returns the number of sg elements that were mapped to the memory region. 19884c67e2bfSSagi Grimberg * 19894c67e2bfSSagi Grimberg * After this completes successfully, the memory region 19904c67e2bfSSagi Grimberg * is ready for registration. 19914c67e2bfSSagi Grimberg */ 1992ff2ba993SChristoph Hellwig int ib_map_mr_sg(struct ib_mr *mr, struct scatterlist *sg, int sg_nents, 19939aa8b321SBart Van Assche unsigned int *sg_offset, unsigned int page_size) 19944c67e2bfSSagi Grimberg { 19954c67e2bfSSagi Grimberg if (unlikely(!mr->device->map_mr_sg)) 19964c67e2bfSSagi Grimberg return -ENOSYS; 19974c67e2bfSSagi Grimberg 19984c67e2bfSSagi Grimberg mr->page_size = page_size; 19994c67e2bfSSagi Grimberg 2000ff2ba993SChristoph Hellwig return mr->device->map_mr_sg(mr, sg, sg_nents, sg_offset); 20014c67e2bfSSagi Grimberg } 20024c67e2bfSSagi Grimberg EXPORT_SYMBOL(ib_map_mr_sg); 20034c67e2bfSSagi Grimberg 20044c67e2bfSSagi Grimberg /** 20054c67e2bfSSagi Grimberg * ib_sg_to_pages() - Convert the largest prefix of a sg list 20064c67e2bfSSagi Grimberg * to a page vector 20074c67e2bfSSagi Grimberg * @mr: memory region 20084c67e2bfSSagi Grimberg * @sgl: dma mapped scatterlist 20094c67e2bfSSagi Grimberg * @sg_nents: number of entries in sg 20109aa8b321SBart Van Assche * @sg_offset_p: IN: start offset in bytes into sg 20119aa8b321SBart Van Assche * OUT: offset in bytes for element n of the sg of the first 20129aa8b321SBart Van Assche * byte that has not been processed where n is the return 20139aa8b321SBart Van Assche * value of this function. 20144c67e2bfSSagi Grimberg * @set_page: driver page assignment function pointer 20154c67e2bfSSagi Grimberg * 20168f5ba10eSBart Van Assche * Core service helper for drivers to convert the largest 20174c67e2bfSSagi Grimberg * prefix of given sg list to a page vector. The sg list 20184c67e2bfSSagi Grimberg * prefix converted is the prefix that meet the requirements 20194c67e2bfSSagi Grimberg * of ib_map_mr_sg. 20204c67e2bfSSagi Grimberg * 20214c67e2bfSSagi Grimberg * Returns the number of sg elements that were assigned to 20224c67e2bfSSagi Grimberg * a page vector. 20234c67e2bfSSagi Grimberg */ 2024ff2ba993SChristoph Hellwig int ib_sg_to_pages(struct ib_mr *mr, struct scatterlist *sgl, int sg_nents, 20259aa8b321SBart Van Assche unsigned int *sg_offset_p, int (*set_page)(struct ib_mr *, u64)) 20264c67e2bfSSagi Grimberg { 20274c67e2bfSSagi Grimberg struct scatterlist *sg; 2028b6aeb980SBart Van Assche u64 last_end_dma_addr = 0; 20299aa8b321SBart Van Assche unsigned int sg_offset = sg_offset_p ? *sg_offset_p : 0; 20304c67e2bfSSagi Grimberg unsigned int last_page_off = 0; 20314c67e2bfSSagi Grimberg u64 page_mask = ~((u64)mr->page_size - 1); 20328f5ba10eSBart Van Assche int i, ret; 20334c67e2bfSSagi Grimberg 20349aa8b321SBart Van Assche if (unlikely(sg_nents <= 0 || sg_offset > sg_dma_len(&sgl[0]))) 20359aa8b321SBart Van Assche return -EINVAL; 20369aa8b321SBart Van Assche 2037ff2ba993SChristoph Hellwig mr->iova = sg_dma_address(&sgl[0]) + sg_offset; 20384c67e2bfSSagi Grimberg mr->length = 0; 20394c67e2bfSSagi Grimberg 20404c67e2bfSSagi Grimberg for_each_sg(sgl, sg, sg_nents, i) { 2041ff2ba993SChristoph Hellwig u64 dma_addr = sg_dma_address(sg) + sg_offset; 20429aa8b321SBart Van Assche u64 prev_addr = dma_addr; 2043ff2ba993SChristoph Hellwig unsigned int dma_len = sg_dma_len(sg) - sg_offset; 20444c67e2bfSSagi Grimberg u64 end_dma_addr = dma_addr + dma_len; 20454c67e2bfSSagi Grimberg u64 page_addr = dma_addr & page_mask; 20464c67e2bfSSagi Grimberg 20478f5ba10eSBart Van Assche /* 20488f5ba10eSBart Van Assche * For the second and later elements, check whether either the 20498f5ba10eSBart Van Assche * end of element i-1 or the start of element i is not aligned 20508f5ba10eSBart Van Assche * on a page boundary. 20518f5ba10eSBart Van Assche */ 20528f5ba10eSBart Van Assche if (i && (last_page_off != 0 || page_addr != dma_addr)) { 20538f5ba10eSBart Van Assche /* Stop mapping if there is a gap. */ 20548f5ba10eSBart Van Assche if (last_end_dma_addr != dma_addr) 20558f5ba10eSBart Van Assche break; 20564c67e2bfSSagi Grimberg 20578f5ba10eSBart Van Assche /* 20588f5ba10eSBart Van Assche * Coalesce this element with the last. If it is small 20598f5ba10eSBart Van Assche * enough just update mr->length. Otherwise start 20608f5ba10eSBart Van Assche * mapping from the next page. 20618f5ba10eSBart Van Assche */ 20628f5ba10eSBart Van Assche goto next_page; 20634c67e2bfSSagi Grimberg } 20644c67e2bfSSagi Grimberg 20654c67e2bfSSagi Grimberg do { 20668f5ba10eSBart Van Assche ret = set_page(mr, page_addr); 20679aa8b321SBart Van Assche if (unlikely(ret < 0)) { 20689aa8b321SBart Van Assche sg_offset = prev_addr - sg_dma_address(sg); 20699aa8b321SBart Van Assche mr->length += prev_addr - dma_addr; 20709aa8b321SBart Van Assche if (sg_offset_p) 20719aa8b321SBart Van Assche *sg_offset_p = sg_offset; 20729aa8b321SBart Van Assche return i || sg_offset ? i : ret; 20739aa8b321SBart Van Assche } 20749aa8b321SBart Van Assche prev_addr = page_addr; 20758f5ba10eSBart Van Assche next_page: 20764c67e2bfSSagi Grimberg page_addr += mr->page_size; 20774c67e2bfSSagi Grimberg } while (page_addr < end_dma_addr); 20784c67e2bfSSagi Grimberg 20794c67e2bfSSagi Grimberg mr->length += dma_len; 20804c67e2bfSSagi Grimberg last_end_dma_addr = end_dma_addr; 20814c67e2bfSSagi Grimberg last_page_off = end_dma_addr & ~page_mask; 2082ff2ba993SChristoph Hellwig 2083ff2ba993SChristoph Hellwig sg_offset = 0; 20844c67e2bfSSagi Grimberg } 20854c67e2bfSSagi Grimberg 20869aa8b321SBart Van Assche if (sg_offset_p) 20879aa8b321SBart Van Assche *sg_offset_p = 0; 20884c67e2bfSSagi Grimberg return i; 20894c67e2bfSSagi Grimberg } 20904c67e2bfSSagi Grimberg EXPORT_SYMBOL(ib_sg_to_pages); 2091765d6774SSteve Wise 2092765d6774SSteve Wise struct ib_drain_cqe { 2093765d6774SSteve Wise struct ib_cqe cqe; 2094765d6774SSteve Wise struct completion done; 2095765d6774SSteve Wise }; 2096765d6774SSteve Wise 2097765d6774SSteve Wise static void ib_drain_qp_done(struct ib_cq *cq, struct ib_wc *wc) 2098765d6774SSteve Wise { 2099765d6774SSteve Wise struct ib_drain_cqe *cqe = container_of(wc->wr_cqe, struct ib_drain_cqe, 2100765d6774SSteve Wise cqe); 2101765d6774SSteve Wise 2102765d6774SSteve Wise complete(&cqe->done); 2103765d6774SSteve Wise } 2104765d6774SSteve Wise 2105765d6774SSteve Wise /* 2106765d6774SSteve Wise * Post a WR and block until its completion is reaped for the SQ. 2107765d6774SSteve Wise */ 2108765d6774SSteve Wise static void __ib_drain_sq(struct ib_qp *qp) 2109765d6774SSteve Wise { 2110f039f44fSBart Van Assche struct ib_cq *cq = qp->send_cq; 2111765d6774SSteve Wise struct ib_qp_attr attr = { .qp_state = IB_QPS_ERR }; 2112765d6774SSteve Wise struct ib_drain_cqe sdrain; 2113765d6774SSteve Wise struct ib_send_wr swr = {}, *bad_swr; 2114765d6774SSteve Wise int ret; 2115765d6774SSteve Wise 2116765d6774SSteve Wise swr.wr_cqe = &sdrain.cqe; 2117765d6774SSteve Wise sdrain.cqe.done = ib_drain_qp_done; 2118765d6774SSteve Wise init_completion(&sdrain.done); 2119765d6774SSteve Wise 2120765d6774SSteve Wise ret = ib_modify_qp(qp, &attr, IB_QP_STATE); 2121765d6774SSteve Wise if (ret) { 2122765d6774SSteve Wise WARN_ONCE(ret, "failed to drain send queue: %d\n", ret); 2123765d6774SSteve Wise return; 2124765d6774SSteve Wise } 2125765d6774SSteve Wise 2126765d6774SSteve Wise ret = ib_post_send(qp, &swr, &bad_swr); 2127765d6774SSteve Wise if (ret) { 2128765d6774SSteve Wise WARN_ONCE(ret, "failed to drain send queue: %d\n", ret); 2129765d6774SSteve Wise return; 2130765d6774SSteve Wise } 2131765d6774SSteve Wise 2132f039f44fSBart Van Assche if (cq->poll_ctx == IB_POLL_DIRECT) 2133f039f44fSBart Van Assche while (wait_for_completion_timeout(&sdrain.done, HZ / 10) <= 0) 2134f039f44fSBart Van Assche ib_process_cq_direct(cq, -1); 2135f039f44fSBart Van Assche else 2136765d6774SSteve Wise wait_for_completion(&sdrain.done); 2137765d6774SSteve Wise } 2138765d6774SSteve Wise 2139765d6774SSteve Wise /* 2140765d6774SSteve Wise * Post a WR and block until its completion is reaped for the RQ. 2141765d6774SSteve Wise */ 2142765d6774SSteve Wise static void __ib_drain_rq(struct ib_qp *qp) 2143765d6774SSteve Wise { 2144f039f44fSBart Van Assche struct ib_cq *cq = qp->recv_cq; 2145765d6774SSteve Wise struct ib_qp_attr attr = { .qp_state = IB_QPS_ERR }; 2146765d6774SSteve Wise struct ib_drain_cqe rdrain; 2147765d6774SSteve Wise struct ib_recv_wr rwr = {}, *bad_rwr; 2148765d6774SSteve Wise int ret; 2149765d6774SSteve Wise 2150765d6774SSteve Wise rwr.wr_cqe = &rdrain.cqe; 2151765d6774SSteve Wise rdrain.cqe.done = ib_drain_qp_done; 2152765d6774SSteve Wise init_completion(&rdrain.done); 2153765d6774SSteve Wise 2154765d6774SSteve Wise ret = ib_modify_qp(qp, &attr, IB_QP_STATE); 2155765d6774SSteve Wise if (ret) { 2156765d6774SSteve Wise WARN_ONCE(ret, "failed to drain recv queue: %d\n", ret); 2157765d6774SSteve Wise return; 2158765d6774SSteve Wise } 2159765d6774SSteve Wise 2160765d6774SSteve Wise ret = ib_post_recv(qp, &rwr, &bad_rwr); 2161765d6774SSteve Wise if (ret) { 2162765d6774SSteve Wise WARN_ONCE(ret, "failed to drain recv queue: %d\n", ret); 2163765d6774SSteve Wise return; 2164765d6774SSteve Wise } 2165765d6774SSteve Wise 2166f039f44fSBart Van Assche if (cq->poll_ctx == IB_POLL_DIRECT) 2167f039f44fSBart Van Assche while (wait_for_completion_timeout(&rdrain.done, HZ / 10) <= 0) 2168f039f44fSBart Van Assche ib_process_cq_direct(cq, -1); 2169f039f44fSBart Van Assche else 2170765d6774SSteve Wise wait_for_completion(&rdrain.done); 2171765d6774SSteve Wise } 2172765d6774SSteve Wise 2173765d6774SSteve Wise /** 2174765d6774SSteve Wise * ib_drain_sq() - Block until all SQ CQEs have been consumed by the 2175765d6774SSteve Wise * application. 2176765d6774SSteve Wise * @qp: queue pair to drain 2177765d6774SSteve Wise * 2178765d6774SSteve Wise * If the device has a provider-specific drain function, then 2179765d6774SSteve Wise * call that. Otherwise call the generic drain function 2180765d6774SSteve Wise * __ib_drain_sq(). 2181765d6774SSteve Wise * 2182765d6774SSteve Wise * The caller must: 2183765d6774SSteve Wise * 2184765d6774SSteve Wise * ensure there is room in the CQ and SQ for the drain work request and 2185765d6774SSteve Wise * completion. 2186765d6774SSteve Wise * 2187f039f44fSBart Van Assche * allocate the CQ using ib_alloc_cq(). 2188765d6774SSteve Wise * 2189765d6774SSteve Wise * ensure that there are no other contexts that are posting WRs concurrently. 2190765d6774SSteve Wise * Otherwise the drain is not guaranteed. 2191765d6774SSteve Wise */ 2192765d6774SSteve Wise void ib_drain_sq(struct ib_qp *qp) 2193765d6774SSteve Wise { 2194765d6774SSteve Wise if (qp->device->drain_sq) 2195765d6774SSteve Wise qp->device->drain_sq(qp); 2196765d6774SSteve Wise else 2197765d6774SSteve Wise __ib_drain_sq(qp); 2198765d6774SSteve Wise } 2199765d6774SSteve Wise EXPORT_SYMBOL(ib_drain_sq); 2200765d6774SSteve Wise 2201765d6774SSteve Wise /** 2202765d6774SSteve Wise * ib_drain_rq() - Block until all RQ CQEs have been consumed by the 2203765d6774SSteve Wise * application. 2204765d6774SSteve Wise * @qp: queue pair to drain 2205765d6774SSteve Wise * 2206765d6774SSteve Wise * If the device has a provider-specific drain function, then 2207765d6774SSteve Wise * call that. Otherwise call the generic drain function 2208765d6774SSteve Wise * __ib_drain_rq(). 2209765d6774SSteve Wise * 2210765d6774SSteve Wise * The caller must: 2211765d6774SSteve Wise * 2212765d6774SSteve Wise * ensure there is room in the CQ and RQ for the drain work request and 2213765d6774SSteve Wise * completion. 2214765d6774SSteve Wise * 2215f039f44fSBart Van Assche * allocate the CQ using ib_alloc_cq(). 2216765d6774SSteve Wise * 2217765d6774SSteve Wise * ensure that there are no other contexts that are posting WRs concurrently. 2218765d6774SSteve Wise * Otherwise the drain is not guaranteed. 2219765d6774SSteve Wise */ 2220765d6774SSteve Wise void ib_drain_rq(struct ib_qp *qp) 2221765d6774SSteve Wise { 2222765d6774SSteve Wise if (qp->device->drain_rq) 2223765d6774SSteve Wise qp->device->drain_rq(qp); 2224765d6774SSteve Wise else 2225765d6774SSteve Wise __ib_drain_rq(qp); 2226765d6774SSteve Wise } 2227765d6774SSteve Wise EXPORT_SYMBOL(ib_drain_rq); 2228765d6774SSteve Wise 2229765d6774SSteve Wise /** 2230765d6774SSteve Wise * ib_drain_qp() - Block until all CQEs have been consumed by the 2231765d6774SSteve Wise * application on both the RQ and SQ. 2232765d6774SSteve Wise * @qp: queue pair to drain 2233765d6774SSteve Wise * 2234765d6774SSteve Wise * The caller must: 2235765d6774SSteve Wise * 2236765d6774SSteve Wise * ensure there is room in the CQ(s), SQ, and RQ for drain work requests 2237765d6774SSteve Wise * and completions. 2238765d6774SSteve Wise * 2239f039f44fSBart Van Assche * allocate the CQs using ib_alloc_cq(). 2240765d6774SSteve Wise * 2241765d6774SSteve Wise * ensure that there are no other contexts that are posting WRs concurrently. 2242765d6774SSteve Wise * Otherwise the drain is not guaranteed. 2243765d6774SSteve Wise */ 2244765d6774SSteve Wise void ib_drain_qp(struct ib_qp *qp) 2245765d6774SSteve Wise { 2246765d6774SSteve Wise ib_drain_sq(qp); 224742235f80SSagi Grimberg if (!qp->srq) 2248765d6774SSteve Wise ib_drain_rq(qp); 2249765d6774SSteve Wise } 2250765d6774SSteve Wise EXPORT_SYMBOL(ib_drain_qp); 2251