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 56c0348eb0SParav Pandit static int ib_resolve_eth_dmac(struct ib_device *device, 57c0348eb0SParav Pandit struct rdma_ah_attr *ah_attr); 58c0348eb0SParav Pandit 592b1b5b60SSagi Grimberg static const char * const ib_events[] = { 602b1b5b60SSagi Grimberg [IB_EVENT_CQ_ERR] = "CQ error", 612b1b5b60SSagi Grimberg [IB_EVENT_QP_FATAL] = "QP fatal error", 622b1b5b60SSagi Grimberg [IB_EVENT_QP_REQ_ERR] = "QP request error", 632b1b5b60SSagi Grimberg [IB_EVENT_QP_ACCESS_ERR] = "QP access error", 642b1b5b60SSagi Grimberg [IB_EVENT_COMM_EST] = "communication established", 652b1b5b60SSagi Grimberg [IB_EVENT_SQ_DRAINED] = "send queue drained", 662b1b5b60SSagi Grimberg [IB_EVENT_PATH_MIG] = "path migration successful", 672b1b5b60SSagi Grimberg [IB_EVENT_PATH_MIG_ERR] = "path migration error", 682b1b5b60SSagi Grimberg [IB_EVENT_DEVICE_FATAL] = "device fatal error", 692b1b5b60SSagi Grimberg [IB_EVENT_PORT_ACTIVE] = "port active", 702b1b5b60SSagi Grimberg [IB_EVENT_PORT_ERR] = "port error", 712b1b5b60SSagi Grimberg [IB_EVENT_LID_CHANGE] = "LID change", 722b1b5b60SSagi Grimberg [IB_EVENT_PKEY_CHANGE] = "P_key change", 732b1b5b60SSagi Grimberg [IB_EVENT_SM_CHANGE] = "SM change", 742b1b5b60SSagi Grimberg [IB_EVENT_SRQ_ERR] = "SRQ error", 752b1b5b60SSagi Grimberg [IB_EVENT_SRQ_LIMIT_REACHED] = "SRQ limit reached", 762b1b5b60SSagi Grimberg [IB_EVENT_QP_LAST_WQE_REACHED] = "last WQE reached", 772b1b5b60SSagi Grimberg [IB_EVENT_CLIENT_REREGISTER] = "client reregister", 782b1b5b60SSagi Grimberg [IB_EVENT_GID_CHANGE] = "GID changed", 792b1b5b60SSagi Grimberg }; 802b1b5b60SSagi Grimberg 81db7489e0SBart Van Assche const char *__attribute_const__ ib_event_msg(enum ib_event_type event) 822b1b5b60SSagi Grimberg { 832b1b5b60SSagi Grimberg size_t index = event; 842b1b5b60SSagi Grimberg 852b1b5b60SSagi Grimberg return (index < ARRAY_SIZE(ib_events) && ib_events[index]) ? 862b1b5b60SSagi Grimberg ib_events[index] : "unrecognized event"; 872b1b5b60SSagi Grimberg } 882b1b5b60SSagi Grimberg EXPORT_SYMBOL(ib_event_msg); 892b1b5b60SSagi Grimberg 902b1b5b60SSagi Grimberg static const char * const wc_statuses[] = { 912b1b5b60SSagi Grimberg [IB_WC_SUCCESS] = "success", 922b1b5b60SSagi Grimberg [IB_WC_LOC_LEN_ERR] = "local length error", 932b1b5b60SSagi Grimberg [IB_WC_LOC_QP_OP_ERR] = "local QP operation error", 942b1b5b60SSagi Grimberg [IB_WC_LOC_EEC_OP_ERR] = "local EE context operation error", 952b1b5b60SSagi Grimberg [IB_WC_LOC_PROT_ERR] = "local protection error", 962b1b5b60SSagi Grimberg [IB_WC_WR_FLUSH_ERR] = "WR flushed", 972b1b5b60SSagi Grimberg [IB_WC_MW_BIND_ERR] = "memory management operation error", 982b1b5b60SSagi Grimberg [IB_WC_BAD_RESP_ERR] = "bad response error", 992b1b5b60SSagi Grimberg [IB_WC_LOC_ACCESS_ERR] = "local access error", 1002b1b5b60SSagi Grimberg [IB_WC_REM_INV_REQ_ERR] = "invalid request error", 1012b1b5b60SSagi Grimberg [IB_WC_REM_ACCESS_ERR] = "remote access error", 1022b1b5b60SSagi Grimberg [IB_WC_REM_OP_ERR] = "remote operation error", 1032b1b5b60SSagi Grimberg [IB_WC_RETRY_EXC_ERR] = "transport retry counter exceeded", 1042b1b5b60SSagi Grimberg [IB_WC_RNR_RETRY_EXC_ERR] = "RNR retry counter exceeded", 1052b1b5b60SSagi Grimberg [IB_WC_LOC_RDD_VIOL_ERR] = "local RDD violation error", 1062b1b5b60SSagi Grimberg [IB_WC_REM_INV_RD_REQ_ERR] = "remote invalid RD request", 1072b1b5b60SSagi Grimberg [IB_WC_REM_ABORT_ERR] = "operation aborted", 1082b1b5b60SSagi Grimberg [IB_WC_INV_EECN_ERR] = "invalid EE context number", 1092b1b5b60SSagi Grimberg [IB_WC_INV_EEC_STATE_ERR] = "invalid EE context state", 1102b1b5b60SSagi Grimberg [IB_WC_FATAL_ERR] = "fatal error", 1112b1b5b60SSagi Grimberg [IB_WC_RESP_TIMEOUT_ERR] = "response timeout error", 1122b1b5b60SSagi Grimberg [IB_WC_GENERAL_ERR] = "general error", 1132b1b5b60SSagi Grimberg }; 1142b1b5b60SSagi Grimberg 115db7489e0SBart Van Assche const char *__attribute_const__ ib_wc_status_msg(enum ib_wc_status status) 1162b1b5b60SSagi Grimberg { 1172b1b5b60SSagi Grimberg size_t index = status; 1182b1b5b60SSagi Grimberg 1192b1b5b60SSagi Grimberg return (index < ARRAY_SIZE(wc_statuses) && wc_statuses[index]) ? 1202b1b5b60SSagi Grimberg wc_statuses[index] : "unrecognized status"; 1212b1b5b60SSagi Grimberg } 1222b1b5b60SSagi Grimberg EXPORT_SYMBOL(ib_wc_status_msg); 1232b1b5b60SSagi Grimberg 1248385fd84SRoland Dreier __attribute_const__ int ib_rate_to_mult(enum ib_rate rate) 125bf6a9e31SJack Morgenstein { 126bf6a9e31SJack Morgenstein switch (rate) { 127bf6a9e31SJack Morgenstein case IB_RATE_2_5_GBPS: return 1; 128bf6a9e31SJack Morgenstein case IB_RATE_5_GBPS: return 2; 129bf6a9e31SJack Morgenstein case IB_RATE_10_GBPS: return 4; 130bf6a9e31SJack Morgenstein case IB_RATE_20_GBPS: return 8; 131bf6a9e31SJack Morgenstein case IB_RATE_30_GBPS: return 12; 132bf6a9e31SJack Morgenstein case IB_RATE_40_GBPS: return 16; 133bf6a9e31SJack Morgenstein case IB_RATE_60_GBPS: return 24; 134bf6a9e31SJack Morgenstein case IB_RATE_80_GBPS: return 32; 135bf6a9e31SJack Morgenstein case IB_RATE_120_GBPS: return 48; 136e2dda368SHans Westgaard Ry case IB_RATE_14_GBPS: return 6; 137e2dda368SHans Westgaard Ry case IB_RATE_56_GBPS: return 22; 138e2dda368SHans Westgaard Ry case IB_RATE_112_GBPS: return 45; 139e2dda368SHans Westgaard Ry case IB_RATE_168_GBPS: return 67; 140e2dda368SHans Westgaard Ry case IB_RATE_25_GBPS: return 10; 141e2dda368SHans Westgaard Ry case IB_RATE_100_GBPS: return 40; 142e2dda368SHans Westgaard Ry case IB_RATE_200_GBPS: return 80; 143e2dda368SHans Westgaard Ry case IB_RATE_300_GBPS: return 120; 144a5a5d199SMichael Guralnik case IB_RATE_28_GBPS: return 11; 145a5a5d199SMichael Guralnik case IB_RATE_50_GBPS: return 20; 146a5a5d199SMichael Guralnik case IB_RATE_400_GBPS: return 160; 147a5a5d199SMichael Guralnik case IB_RATE_600_GBPS: return 240; 148bf6a9e31SJack Morgenstein default: return -1; 149bf6a9e31SJack Morgenstein } 150bf6a9e31SJack Morgenstein } 151bf6a9e31SJack Morgenstein EXPORT_SYMBOL(ib_rate_to_mult); 152bf6a9e31SJack Morgenstein 1538385fd84SRoland Dreier __attribute_const__ enum ib_rate mult_to_ib_rate(int mult) 154bf6a9e31SJack Morgenstein { 155bf6a9e31SJack Morgenstein switch (mult) { 156bf6a9e31SJack Morgenstein case 1: return IB_RATE_2_5_GBPS; 157bf6a9e31SJack Morgenstein case 2: return IB_RATE_5_GBPS; 158bf6a9e31SJack Morgenstein case 4: return IB_RATE_10_GBPS; 159bf6a9e31SJack Morgenstein case 8: return IB_RATE_20_GBPS; 160bf6a9e31SJack Morgenstein case 12: return IB_RATE_30_GBPS; 161bf6a9e31SJack Morgenstein case 16: return IB_RATE_40_GBPS; 162bf6a9e31SJack Morgenstein case 24: return IB_RATE_60_GBPS; 163bf6a9e31SJack Morgenstein case 32: return IB_RATE_80_GBPS; 164bf6a9e31SJack Morgenstein case 48: return IB_RATE_120_GBPS; 165e2dda368SHans Westgaard Ry case 6: return IB_RATE_14_GBPS; 166e2dda368SHans Westgaard Ry case 22: return IB_RATE_56_GBPS; 167e2dda368SHans Westgaard Ry case 45: return IB_RATE_112_GBPS; 168e2dda368SHans Westgaard Ry case 67: return IB_RATE_168_GBPS; 169e2dda368SHans Westgaard Ry case 10: return IB_RATE_25_GBPS; 170e2dda368SHans Westgaard Ry case 40: return IB_RATE_100_GBPS; 171e2dda368SHans Westgaard Ry case 80: return IB_RATE_200_GBPS; 172e2dda368SHans Westgaard Ry case 120: return IB_RATE_300_GBPS; 173a5a5d199SMichael Guralnik case 11: return IB_RATE_28_GBPS; 174a5a5d199SMichael Guralnik case 20: return IB_RATE_50_GBPS; 175a5a5d199SMichael Guralnik case 160: return IB_RATE_400_GBPS; 176a5a5d199SMichael Guralnik case 240: return IB_RATE_600_GBPS; 177bf6a9e31SJack Morgenstein default: return IB_RATE_PORT_CURRENT; 178bf6a9e31SJack Morgenstein } 179bf6a9e31SJack Morgenstein } 180bf6a9e31SJack Morgenstein EXPORT_SYMBOL(mult_to_ib_rate); 181bf6a9e31SJack Morgenstein 1828385fd84SRoland Dreier __attribute_const__ int ib_rate_to_mbps(enum ib_rate rate) 18371eeba16SMarcel Apfelbaum { 18471eeba16SMarcel Apfelbaum switch (rate) { 18571eeba16SMarcel Apfelbaum case IB_RATE_2_5_GBPS: return 2500; 18671eeba16SMarcel Apfelbaum case IB_RATE_5_GBPS: return 5000; 18771eeba16SMarcel Apfelbaum case IB_RATE_10_GBPS: return 10000; 18871eeba16SMarcel Apfelbaum case IB_RATE_20_GBPS: return 20000; 18971eeba16SMarcel Apfelbaum case IB_RATE_30_GBPS: return 30000; 19071eeba16SMarcel Apfelbaum case IB_RATE_40_GBPS: return 40000; 19171eeba16SMarcel Apfelbaum case IB_RATE_60_GBPS: return 60000; 19271eeba16SMarcel Apfelbaum case IB_RATE_80_GBPS: return 80000; 19371eeba16SMarcel Apfelbaum case IB_RATE_120_GBPS: return 120000; 19471eeba16SMarcel Apfelbaum case IB_RATE_14_GBPS: return 14062; 19571eeba16SMarcel Apfelbaum case IB_RATE_56_GBPS: return 56250; 19671eeba16SMarcel Apfelbaum case IB_RATE_112_GBPS: return 112500; 19771eeba16SMarcel Apfelbaum case IB_RATE_168_GBPS: return 168750; 19871eeba16SMarcel Apfelbaum case IB_RATE_25_GBPS: return 25781; 19971eeba16SMarcel Apfelbaum case IB_RATE_100_GBPS: return 103125; 20071eeba16SMarcel Apfelbaum case IB_RATE_200_GBPS: return 206250; 20171eeba16SMarcel Apfelbaum case IB_RATE_300_GBPS: return 309375; 202a5a5d199SMichael Guralnik case IB_RATE_28_GBPS: return 28125; 203a5a5d199SMichael Guralnik case IB_RATE_50_GBPS: return 53125; 204a5a5d199SMichael Guralnik case IB_RATE_400_GBPS: return 425000; 205a5a5d199SMichael Guralnik case IB_RATE_600_GBPS: return 637500; 20671eeba16SMarcel Apfelbaum default: return -1; 20771eeba16SMarcel Apfelbaum } 20871eeba16SMarcel Apfelbaum } 20971eeba16SMarcel Apfelbaum EXPORT_SYMBOL(ib_rate_to_mbps); 21071eeba16SMarcel Apfelbaum 2118385fd84SRoland Dreier __attribute_const__ enum rdma_transport_type 2125d60c111SJason Gunthorpe rdma_node_get_transport(unsigned int node_type) 21307ebafbaSTom Tucker { 214cdc596d8SLeon Romanovsky 215cdc596d8SLeon Romanovsky if (node_type == RDMA_NODE_USNIC) 2165db5765eSUpinder Malhi return RDMA_TRANSPORT_USNIC; 217cdc596d8SLeon Romanovsky if (node_type == RDMA_NODE_USNIC_UDP) 218248567f7SUpinder Malhi return RDMA_TRANSPORT_USNIC_UDP; 219cdc596d8SLeon Romanovsky if (node_type == RDMA_NODE_RNIC) 220cdc596d8SLeon Romanovsky return RDMA_TRANSPORT_IWARP; 221f95be3d2SGal Pressman if (node_type == RDMA_NODE_UNSPECIFIED) 222f95be3d2SGal Pressman return RDMA_TRANSPORT_UNSPECIFIED; 223cdc596d8SLeon Romanovsky 224cdc596d8SLeon Romanovsky return RDMA_TRANSPORT_IB; 22507ebafbaSTom Tucker } 22607ebafbaSTom Tucker EXPORT_SYMBOL(rdma_node_get_transport); 22707ebafbaSTom Tucker 228a3f5adafSEli Cohen enum rdma_link_layer rdma_port_get_link_layer(struct ib_device *device, u8 port_num) 229a3f5adafSEli Cohen { 23082901e3eSLeon Romanovsky enum rdma_transport_type lt; 2313023a1e9SKamal Heib if (device->ops.get_link_layer) 2323023a1e9SKamal Heib return device->ops.get_link_layer(device, port_num); 233a3f5adafSEli Cohen 23482901e3eSLeon Romanovsky lt = rdma_node_get_transport(device->node_type); 23582901e3eSLeon Romanovsky if (lt == RDMA_TRANSPORT_IB) 236a3f5adafSEli Cohen return IB_LINK_LAYER_INFINIBAND; 23782901e3eSLeon Romanovsky 238a3f5adafSEli Cohen return IB_LINK_LAYER_ETHERNET; 239a3f5adafSEli Cohen } 240a3f5adafSEli Cohen EXPORT_SYMBOL(rdma_port_get_link_layer); 241a3f5adafSEli Cohen 2421da177e4SLinus Torvalds /* Protection domains */ 2431da177e4SLinus Torvalds 24496249d70SJason Gunthorpe /** 24596249d70SJason Gunthorpe * ib_alloc_pd - Allocates an unused protection domain. 24696249d70SJason Gunthorpe * @device: The device on which to allocate the protection domain. 24796249d70SJason Gunthorpe * 24896249d70SJason Gunthorpe * A protection domain object provides an association between QPs, shared 24996249d70SJason Gunthorpe * receive queues, address handles, memory regions, and memory windows. 25096249d70SJason Gunthorpe * 25196249d70SJason Gunthorpe * Every PD has a local_dma_lkey which can be used as the lkey value for local 25296249d70SJason Gunthorpe * memory operations. 25396249d70SJason Gunthorpe */ 254ed082d36SChristoph Hellwig struct ib_pd *__ib_alloc_pd(struct ib_device *device, unsigned int flags, 255ed082d36SChristoph Hellwig const char *caller) 2561da177e4SLinus Torvalds { 2571da177e4SLinus Torvalds struct ib_pd *pd; 258ed082d36SChristoph Hellwig int mr_access_flags = 0; 25921a428a0SLeon Romanovsky int ret; 2601da177e4SLinus Torvalds 26121a428a0SLeon Romanovsky pd = rdma_zalloc_drv_obj(device, ib_pd); 26221a428a0SLeon Romanovsky if (!pd) 26321a428a0SLeon Romanovsky return ERR_PTR(-ENOMEM); 2641da177e4SLinus Torvalds 2651da177e4SLinus Torvalds pd->device = device; 266b5e81bf5SRoland Dreier pd->uobject = NULL; 26750d46335SChristoph Hellwig pd->__internal_mr = NULL; 2681da177e4SLinus Torvalds atomic_set(&pd->usecnt, 0); 269ed082d36SChristoph Hellwig pd->flags = flags; 27096249d70SJason Gunthorpe 27121a428a0SLeon Romanovsky pd->res.type = RDMA_RESTRACK_PD; 27221a428a0SLeon Romanovsky rdma_restrack_set_task(&pd->res, caller); 27321a428a0SLeon Romanovsky 274ff23dfa1SShamir Rabinovitch ret = device->ops.alloc_pd(pd, NULL); 27521a428a0SLeon Romanovsky if (ret) { 27621a428a0SLeon Romanovsky kfree(pd); 27721a428a0SLeon Romanovsky return ERR_PTR(ret); 27821a428a0SLeon Romanovsky } 27921a428a0SLeon Romanovsky rdma_restrack_kadd(&pd->res); 28021a428a0SLeon Romanovsky 28186bee4c9SOr Gerlitz if (device->attrs.device_cap_flags & IB_DEVICE_LOCAL_DMA_LKEY) 28296249d70SJason Gunthorpe pd->local_dma_lkey = device->local_dma_lkey; 283ed082d36SChristoph Hellwig else 284ed082d36SChristoph Hellwig mr_access_flags |= IB_ACCESS_LOCAL_WRITE; 285ed082d36SChristoph Hellwig 286ed082d36SChristoph Hellwig if (flags & IB_PD_UNSAFE_GLOBAL_RKEY) { 287ed082d36SChristoph Hellwig pr_warn("%s: enabling unsafe global rkey\n", caller); 288ed082d36SChristoph Hellwig mr_access_flags |= IB_ACCESS_REMOTE_READ | IB_ACCESS_REMOTE_WRITE; 289ed082d36SChristoph Hellwig } 290ed082d36SChristoph Hellwig 291ed082d36SChristoph Hellwig if (mr_access_flags) { 29296249d70SJason Gunthorpe struct ib_mr *mr; 29396249d70SJason Gunthorpe 2943023a1e9SKamal Heib mr = pd->device->ops.get_dma_mr(pd, mr_access_flags); 29596249d70SJason Gunthorpe if (IS_ERR(mr)) { 29696249d70SJason Gunthorpe ib_dealloc_pd(pd); 2975ef990f0SChristoph Hellwig return ERR_CAST(mr); 2981da177e4SLinus Torvalds } 2991da177e4SLinus Torvalds 3005ef990f0SChristoph Hellwig mr->device = pd->device; 3015ef990f0SChristoph Hellwig mr->pd = pd; 3025ef990f0SChristoph Hellwig mr->uobject = NULL; 3035ef990f0SChristoph Hellwig mr->need_inval = false; 3045ef990f0SChristoph Hellwig 30550d46335SChristoph Hellwig pd->__internal_mr = mr; 306ed082d36SChristoph Hellwig 307ed082d36SChristoph Hellwig if (!(device->attrs.device_cap_flags & IB_DEVICE_LOCAL_DMA_LKEY)) 30850d46335SChristoph Hellwig pd->local_dma_lkey = pd->__internal_mr->lkey; 309ed082d36SChristoph Hellwig 310ed082d36SChristoph Hellwig if (flags & IB_PD_UNSAFE_GLOBAL_RKEY) 311ed082d36SChristoph Hellwig pd->unsafe_global_rkey = pd->__internal_mr->rkey; 31296249d70SJason Gunthorpe } 313ed082d36SChristoph Hellwig 3141da177e4SLinus Torvalds return pd; 3151da177e4SLinus Torvalds } 316ed082d36SChristoph Hellwig EXPORT_SYMBOL(__ib_alloc_pd); 3171da177e4SLinus Torvalds 3187dd78647SJason Gunthorpe /** 31991f57129SIsrael Rukshin * ib_dealloc_pd_user - Deallocates a protection domain. 3207dd78647SJason Gunthorpe * @pd: The protection domain to deallocate. 321c4367a26SShamir Rabinovitch * @udata: Valid user data or NULL for kernel object 3227dd78647SJason Gunthorpe * 3237dd78647SJason Gunthorpe * It is an error to call this function while any resources in the pd still 3247dd78647SJason Gunthorpe * exist. The caller is responsible to synchronously destroy them and 3257dd78647SJason Gunthorpe * guarantee no new allocations will happen. 3267dd78647SJason Gunthorpe */ 327c4367a26SShamir Rabinovitch void ib_dealloc_pd_user(struct ib_pd *pd, struct ib_udata *udata) 3281da177e4SLinus Torvalds { 3297dd78647SJason Gunthorpe int ret; 3301da177e4SLinus Torvalds 33150d46335SChristoph Hellwig if (pd->__internal_mr) { 332c4367a26SShamir Rabinovitch ret = pd->device->ops.dereg_mr(pd->__internal_mr, NULL); 3337dd78647SJason Gunthorpe WARN_ON(ret); 33450d46335SChristoph Hellwig pd->__internal_mr = NULL; 33596249d70SJason Gunthorpe } 33696249d70SJason Gunthorpe 3377dd78647SJason Gunthorpe /* uverbs manipulates usecnt with proper locking, while the kabi 3387dd78647SJason Gunthorpe requires the caller to guarantee we can't race here. */ 3397dd78647SJason Gunthorpe WARN_ON(atomic_read(&pd->usecnt)); 3401da177e4SLinus Torvalds 3419d5f8c20SLeon Romanovsky rdma_restrack_del(&pd->res); 342c4367a26SShamir Rabinovitch pd->device->ops.dealloc_pd(pd, udata); 34321a428a0SLeon Romanovsky kfree(pd); 3441da177e4SLinus Torvalds } 345c4367a26SShamir Rabinovitch EXPORT_SYMBOL(ib_dealloc_pd_user); 3461da177e4SLinus Torvalds 3471da177e4SLinus Torvalds /* Address handles */ 3481da177e4SLinus Torvalds 349d97099feSJason Gunthorpe /** 350d97099feSJason Gunthorpe * rdma_copy_ah_attr - Copy rdma ah attribute from source to destination. 351d97099feSJason Gunthorpe * @dest: Pointer to destination ah_attr. Contents of the destination 352d97099feSJason Gunthorpe * pointer is assumed to be invalid and attribute are overwritten. 353d97099feSJason Gunthorpe * @src: Pointer to source ah_attr. 354d97099feSJason Gunthorpe */ 355d97099feSJason Gunthorpe void rdma_copy_ah_attr(struct rdma_ah_attr *dest, 356d97099feSJason Gunthorpe const struct rdma_ah_attr *src) 357d97099feSJason Gunthorpe { 358d97099feSJason Gunthorpe *dest = *src; 359d97099feSJason Gunthorpe if (dest->grh.sgid_attr) 360d97099feSJason Gunthorpe rdma_hold_gid_attr(dest->grh.sgid_attr); 361d97099feSJason Gunthorpe } 362d97099feSJason Gunthorpe EXPORT_SYMBOL(rdma_copy_ah_attr); 363d97099feSJason Gunthorpe 364d97099feSJason Gunthorpe /** 365d97099feSJason Gunthorpe * rdma_replace_ah_attr - Replace valid ah_attr with new new one. 366d97099feSJason Gunthorpe * @old: Pointer to existing ah_attr which needs to be replaced. 367d97099feSJason Gunthorpe * old is assumed to be valid or zero'd 368d97099feSJason Gunthorpe * @new: Pointer to the new ah_attr. 369d97099feSJason Gunthorpe * 370d97099feSJason Gunthorpe * rdma_replace_ah_attr() first releases any reference in the old ah_attr if 371d97099feSJason Gunthorpe * old the ah_attr is valid; after that it copies the new attribute and holds 372d97099feSJason Gunthorpe * the reference to the replaced ah_attr. 373d97099feSJason Gunthorpe */ 374d97099feSJason Gunthorpe void rdma_replace_ah_attr(struct rdma_ah_attr *old, 375d97099feSJason Gunthorpe const struct rdma_ah_attr *new) 376d97099feSJason Gunthorpe { 377d97099feSJason Gunthorpe rdma_destroy_ah_attr(old); 378d97099feSJason Gunthorpe *old = *new; 379d97099feSJason Gunthorpe if (old->grh.sgid_attr) 380d97099feSJason Gunthorpe rdma_hold_gid_attr(old->grh.sgid_attr); 381d97099feSJason Gunthorpe } 382d97099feSJason Gunthorpe EXPORT_SYMBOL(rdma_replace_ah_attr); 383d97099feSJason Gunthorpe 384d97099feSJason Gunthorpe /** 385d97099feSJason Gunthorpe * rdma_move_ah_attr - Move ah_attr pointed by source to destination. 386d97099feSJason Gunthorpe * @dest: Pointer to destination ah_attr to copy to. 387d97099feSJason Gunthorpe * dest is assumed to be valid or zero'd 388d97099feSJason Gunthorpe * @src: Pointer to the new ah_attr. 389d97099feSJason Gunthorpe * 390d97099feSJason Gunthorpe * rdma_move_ah_attr() first releases any reference in the destination ah_attr 391d97099feSJason Gunthorpe * if it is valid. This also transfers ownership of internal references from 392d97099feSJason Gunthorpe * src to dest, making src invalid in the process. No new reference of the src 393d97099feSJason Gunthorpe * ah_attr is taken. 394d97099feSJason Gunthorpe */ 395d97099feSJason Gunthorpe void rdma_move_ah_attr(struct rdma_ah_attr *dest, struct rdma_ah_attr *src) 396d97099feSJason Gunthorpe { 397d97099feSJason Gunthorpe rdma_destroy_ah_attr(dest); 398d97099feSJason Gunthorpe *dest = *src; 399d97099feSJason Gunthorpe src->grh.sgid_attr = NULL; 400d97099feSJason Gunthorpe } 401d97099feSJason Gunthorpe EXPORT_SYMBOL(rdma_move_ah_attr); 402d97099feSJason Gunthorpe 4038d9ec9adSJason Gunthorpe /* 4048d9ec9adSJason Gunthorpe * Validate that the rdma_ah_attr is valid for the device before passing it 4058d9ec9adSJason Gunthorpe * off to the driver. 4068d9ec9adSJason Gunthorpe */ 4078d9ec9adSJason Gunthorpe static int rdma_check_ah_attr(struct ib_device *device, 4088d9ec9adSJason Gunthorpe struct rdma_ah_attr *ah_attr) 4098d9ec9adSJason Gunthorpe { 4108d9ec9adSJason Gunthorpe if (!rdma_is_port_valid(device, ah_attr->port_num)) 4118d9ec9adSJason Gunthorpe return -EINVAL; 4128d9ec9adSJason Gunthorpe 413b02289b3SArtemy Kovalyov if ((rdma_is_grh_required(device, ah_attr->port_num) || 414b02289b3SArtemy Kovalyov ah_attr->type == RDMA_AH_ATTR_TYPE_ROCE) && 4158d9ec9adSJason Gunthorpe !(ah_attr->ah_flags & IB_AH_GRH)) 4168d9ec9adSJason Gunthorpe return -EINVAL; 4178d9ec9adSJason Gunthorpe 4188d9ec9adSJason Gunthorpe if (ah_attr->grh.sgid_attr) { 4198d9ec9adSJason Gunthorpe /* 4208d9ec9adSJason Gunthorpe * Make sure the passed sgid_attr is consistent with the 4218d9ec9adSJason Gunthorpe * parameters 4228d9ec9adSJason Gunthorpe */ 4238d9ec9adSJason Gunthorpe if (ah_attr->grh.sgid_attr->index != ah_attr->grh.sgid_index || 4248d9ec9adSJason Gunthorpe ah_attr->grh.sgid_attr->port_num != ah_attr->port_num) 4258d9ec9adSJason Gunthorpe return -EINVAL; 4268d9ec9adSJason Gunthorpe } 4278d9ec9adSJason Gunthorpe return 0; 4288d9ec9adSJason Gunthorpe } 4298d9ec9adSJason Gunthorpe 4308d9ec9adSJason Gunthorpe /* 4318d9ec9adSJason Gunthorpe * If the ah requires a GRH then ensure that sgid_attr pointer is filled in. 4328d9ec9adSJason Gunthorpe * On success the caller is responsible to call rdma_unfill_sgid_attr(). 4338d9ec9adSJason Gunthorpe */ 4348d9ec9adSJason Gunthorpe static int rdma_fill_sgid_attr(struct ib_device *device, 4358d9ec9adSJason Gunthorpe struct rdma_ah_attr *ah_attr, 4368d9ec9adSJason Gunthorpe const struct ib_gid_attr **old_sgid_attr) 4378d9ec9adSJason Gunthorpe { 4388d9ec9adSJason Gunthorpe const struct ib_gid_attr *sgid_attr; 4398d9ec9adSJason Gunthorpe struct ib_global_route *grh; 4408d9ec9adSJason Gunthorpe int ret; 4418d9ec9adSJason Gunthorpe 4428d9ec9adSJason Gunthorpe *old_sgid_attr = ah_attr->grh.sgid_attr; 4438d9ec9adSJason Gunthorpe 4448d9ec9adSJason Gunthorpe ret = rdma_check_ah_attr(device, ah_attr); 4458d9ec9adSJason Gunthorpe if (ret) 4468d9ec9adSJason Gunthorpe return ret; 4478d9ec9adSJason Gunthorpe 4488d9ec9adSJason Gunthorpe if (!(ah_attr->ah_flags & IB_AH_GRH)) 4498d9ec9adSJason Gunthorpe return 0; 4508d9ec9adSJason Gunthorpe 4518d9ec9adSJason Gunthorpe grh = rdma_ah_retrieve_grh(ah_attr); 4528d9ec9adSJason Gunthorpe if (grh->sgid_attr) 4538d9ec9adSJason Gunthorpe return 0; 4548d9ec9adSJason Gunthorpe 4558d9ec9adSJason Gunthorpe sgid_attr = 4568d9ec9adSJason Gunthorpe rdma_get_gid_attr(device, ah_attr->port_num, grh->sgid_index); 4578d9ec9adSJason Gunthorpe if (IS_ERR(sgid_attr)) 4588d9ec9adSJason Gunthorpe return PTR_ERR(sgid_attr); 4598d9ec9adSJason Gunthorpe 4608d9ec9adSJason Gunthorpe /* Move ownerhip of the kref into the ah_attr */ 4618d9ec9adSJason Gunthorpe grh->sgid_attr = sgid_attr; 4628d9ec9adSJason Gunthorpe return 0; 4638d9ec9adSJason Gunthorpe } 4648d9ec9adSJason Gunthorpe 4658d9ec9adSJason Gunthorpe static void rdma_unfill_sgid_attr(struct rdma_ah_attr *ah_attr, 4668d9ec9adSJason Gunthorpe const struct ib_gid_attr *old_sgid_attr) 4678d9ec9adSJason Gunthorpe { 4688d9ec9adSJason Gunthorpe /* 4698d9ec9adSJason Gunthorpe * Fill didn't change anything, the caller retains ownership of 4708d9ec9adSJason Gunthorpe * whatever it passed 4718d9ec9adSJason Gunthorpe */ 4728d9ec9adSJason Gunthorpe if (ah_attr->grh.sgid_attr == old_sgid_attr) 4738d9ec9adSJason Gunthorpe return; 4748d9ec9adSJason Gunthorpe 4758d9ec9adSJason Gunthorpe /* 4768d9ec9adSJason Gunthorpe * Otherwise, we need to undo what rdma_fill_sgid_attr so the caller 4778d9ec9adSJason Gunthorpe * doesn't see any change in the rdma_ah_attr. If we get here 4788d9ec9adSJason Gunthorpe * old_sgid_attr is NULL. 4798d9ec9adSJason Gunthorpe */ 4808d9ec9adSJason Gunthorpe rdma_destroy_ah_attr(ah_attr); 4818d9ec9adSJason Gunthorpe } 4828d9ec9adSJason Gunthorpe 4831a1f460fSJason Gunthorpe static const struct ib_gid_attr * 4841a1f460fSJason Gunthorpe rdma_update_sgid_attr(struct rdma_ah_attr *ah_attr, 4851a1f460fSJason Gunthorpe const struct ib_gid_attr *old_attr) 4861a1f460fSJason Gunthorpe { 4871a1f460fSJason Gunthorpe if (old_attr) 4881a1f460fSJason Gunthorpe rdma_put_gid_attr(old_attr); 4891a1f460fSJason Gunthorpe if (ah_attr->ah_flags & IB_AH_GRH) { 4901a1f460fSJason Gunthorpe rdma_hold_gid_attr(ah_attr->grh.sgid_attr); 4911a1f460fSJason Gunthorpe return ah_attr->grh.sgid_attr; 4921a1f460fSJason Gunthorpe } 4931a1f460fSJason Gunthorpe return NULL; 4941a1f460fSJason Gunthorpe } 4951a1f460fSJason Gunthorpe 4965cda6587SParav Pandit static struct ib_ah *_rdma_create_ah(struct ib_pd *pd, 4975cda6587SParav Pandit struct rdma_ah_attr *ah_attr, 498b090c4e3SGal Pressman u32 flags, 4995cda6587SParav Pandit struct ib_udata *udata) 5001da177e4SLinus Torvalds { 501d3456914SLeon Romanovsky struct ib_device *device = pd->device; 5021da177e4SLinus Torvalds struct ib_ah *ah; 503d3456914SLeon Romanovsky int ret; 5041da177e4SLinus Torvalds 505b090c4e3SGal Pressman might_sleep_if(flags & RDMA_CREATE_AH_SLEEPABLE); 506b090c4e3SGal Pressman 507d3456914SLeon Romanovsky if (!device->ops.create_ah) 5080584c47bSKamal Heib return ERR_PTR(-EOPNOTSUPP); 5090584c47bSKamal Heib 510d3456914SLeon Romanovsky ah = rdma_zalloc_drv_obj_gfp( 511d3456914SLeon Romanovsky device, ib_ah, 512d3456914SLeon Romanovsky (flags & RDMA_CREATE_AH_SLEEPABLE) ? GFP_KERNEL : GFP_ATOMIC); 513d3456914SLeon Romanovsky if (!ah) 514d3456914SLeon Romanovsky return ERR_PTR(-ENOMEM); 5151da177e4SLinus Torvalds 516d3456914SLeon Romanovsky ah->device = device; 5171da177e4SLinus Torvalds ah->pd = pd; 51844c58487SDasaratharaman Chandramouli ah->type = ah_attr->type; 5191a1f460fSJason Gunthorpe ah->sgid_attr = rdma_update_sgid_attr(ah_attr, NULL); 5201a1f460fSJason Gunthorpe 521d3456914SLeon Romanovsky ret = device->ops.create_ah(ah, ah_attr, flags, udata); 522d3456914SLeon Romanovsky if (ret) { 523d3456914SLeon Romanovsky kfree(ah); 524d3456914SLeon Romanovsky return ERR_PTR(ret); 5251da177e4SLinus Torvalds } 5261da177e4SLinus Torvalds 527d3456914SLeon Romanovsky atomic_inc(&pd->usecnt); 5281da177e4SLinus Torvalds return ah; 5291da177e4SLinus Torvalds } 5305cda6587SParav Pandit 5318d9ec9adSJason Gunthorpe /** 5328d9ec9adSJason Gunthorpe * rdma_create_ah - Creates an address handle for the 5338d9ec9adSJason Gunthorpe * given address vector. 5348d9ec9adSJason Gunthorpe * @pd: The protection domain associated with the address handle. 5358d9ec9adSJason Gunthorpe * @ah_attr: The attributes of the address vector. 536b090c4e3SGal Pressman * @flags: Create address handle flags (see enum rdma_create_ah_flags). 5378d9ec9adSJason Gunthorpe * 5388d9ec9adSJason Gunthorpe * It returns 0 on success and returns appropriate error code on error. 5398d9ec9adSJason Gunthorpe * The address handle is used to reference a local or global destination 5408d9ec9adSJason Gunthorpe * in all UD QP post sends. 5418d9ec9adSJason Gunthorpe */ 542b090c4e3SGal Pressman struct ib_ah *rdma_create_ah(struct ib_pd *pd, struct rdma_ah_attr *ah_attr, 543b090c4e3SGal Pressman u32 flags) 5445cda6587SParav Pandit { 5458d9ec9adSJason Gunthorpe const struct ib_gid_attr *old_sgid_attr; 5468d9ec9adSJason Gunthorpe struct ib_ah *ah; 5478d9ec9adSJason Gunthorpe int ret; 5488d9ec9adSJason Gunthorpe 5498d9ec9adSJason Gunthorpe ret = rdma_fill_sgid_attr(pd->device, ah_attr, &old_sgid_attr); 5508d9ec9adSJason Gunthorpe if (ret) 5518d9ec9adSJason Gunthorpe return ERR_PTR(ret); 5528d9ec9adSJason Gunthorpe 553b090c4e3SGal Pressman ah = _rdma_create_ah(pd, ah_attr, flags, NULL); 5548d9ec9adSJason Gunthorpe 5558d9ec9adSJason Gunthorpe rdma_unfill_sgid_attr(ah_attr, old_sgid_attr); 5568d9ec9adSJason Gunthorpe return ah; 5575cda6587SParav Pandit } 5580a18cfe4SDasaratharaman Chandramouli EXPORT_SYMBOL(rdma_create_ah); 5591da177e4SLinus Torvalds 5605cda6587SParav Pandit /** 5615cda6587SParav Pandit * rdma_create_user_ah - Creates an address handle for the 5625cda6587SParav Pandit * given address vector. 5635cda6587SParav Pandit * It resolves destination mac address for ah attribute of RoCE type. 5645cda6587SParav Pandit * @pd: The protection domain associated with the address handle. 5655cda6587SParav Pandit * @ah_attr: The attributes of the address vector. 5665cda6587SParav Pandit * @udata: pointer to user's input output buffer information need by 5675cda6587SParav Pandit * provider driver. 5685cda6587SParav Pandit * 5695cda6587SParav Pandit * It returns 0 on success and returns appropriate error code on error. 5705cda6587SParav Pandit * The address handle is used to reference a local or global destination 5715cda6587SParav Pandit * in all UD QP post sends. 5725cda6587SParav Pandit */ 5735cda6587SParav Pandit struct ib_ah *rdma_create_user_ah(struct ib_pd *pd, 5745cda6587SParav Pandit struct rdma_ah_attr *ah_attr, 5755cda6587SParav Pandit struct ib_udata *udata) 5765cda6587SParav Pandit { 5778d9ec9adSJason Gunthorpe const struct ib_gid_attr *old_sgid_attr; 5788d9ec9adSJason Gunthorpe struct ib_ah *ah; 5795cda6587SParav Pandit int err; 5805cda6587SParav Pandit 5818d9ec9adSJason Gunthorpe err = rdma_fill_sgid_attr(pd->device, ah_attr, &old_sgid_attr); 5828d9ec9adSJason Gunthorpe if (err) 5838d9ec9adSJason Gunthorpe return ERR_PTR(err); 5848d9ec9adSJason Gunthorpe 5855cda6587SParav Pandit if (ah_attr->type == RDMA_AH_ATTR_TYPE_ROCE) { 5865cda6587SParav Pandit err = ib_resolve_eth_dmac(pd->device, ah_attr); 5878d9ec9adSJason Gunthorpe if (err) { 5888d9ec9adSJason Gunthorpe ah = ERR_PTR(err); 5898d9ec9adSJason Gunthorpe goto out; 5908d9ec9adSJason Gunthorpe } 5915cda6587SParav Pandit } 5925cda6587SParav Pandit 593b090c4e3SGal Pressman ah = _rdma_create_ah(pd, ah_attr, RDMA_CREATE_AH_SLEEPABLE, udata); 5948d9ec9adSJason Gunthorpe 5958d9ec9adSJason Gunthorpe out: 5968d9ec9adSJason Gunthorpe rdma_unfill_sgid_attr(ah_attr, old_sgid_attr); 5978d9ec9adSJason Gunthorpe return ah; 5985cda6587SParav Pandit } 5995cda6587SParav Pandit EXPORT_SYMBOL(rdma_create_user_ah); 6005cda6587SParav Pandit 601850d8fd7SMoni Shoua int ib_get_rdma_header_version(const union rdma_network_hdr *hdr) 602c865f246SSomnath Kotur { 603c865f246SSomnath Kotur const struct iphdr *ip4h = (struct iphdr *)&hdr->roce4grh; 604c865f246SSomnath Kotur struct iphdr ip4h_checked; 605c865f246SSomnath Kotur const struct ipv6hdr *ip6h = (struct ipv6hdr *)&hdr->ibgrh; 606c865f246SSomnath Kotur 607c865f246SSomnath Kotur /* If it's IPv6, the version must be 6, otherwise, the first 608c865f246SSomnath Kotur * 20 bytes (before the IPv4 header) are garbled. 609c865f246SSomnath Kotur */ 610c865f246SSomnath Kotur if (ip6h->version != 6) 611c865f246SSomnath Kotur return (ip4h->version == 4) ? 4 : 0; 612c865f246SSomnath Kotur /* version may be 6 or 4 because the first 20 bytes could be garbled */ 613c865f246SSomnath Kotur 614c865f246SSomnath Kotur /* RoCE v2 requires no options, thus header length 615c865f246SSomnath Kotur * must be 5 words 616c865f246SSomnath Kotur */ 617c865f246SSomnath Kotur if (ip4h->ihl != 5) 618c865f246SSomnath Kotur return 6; 619c865f246SSomnath Kotur 620c865f246SSomnath Kotur /* Verify checksum. 621c865f246SSomnath Kotur * We can't write on scattered buffers so we need to copy to 622c865f246SSomnath Kotur * temp buffer. 623c865f246SSomnath Kotur */ 624c865f246SSomnath Kotur memcpy(&ip4h_checked, ip4h, sizeof(ip4h_checked)); 625c865f246SSomnath Kotur ip4h_checked.check = 0; 626c865f246SSomnath Kotur ip4h_checked.check = ip_fast_csum((u8 *)&ip4h_checked, 5); 627c865f246SSomnath Kotur /* if IPv4 header checksum is OK, believe it */ 628c865f246SSomnath Kotur if (ip4h->check == ip4h_checked.check) 629c865f246SSomnath Kotur return 4; 630c865f246SSomnath Kotur return 6; 631c865f246SSomnath Kotur } 632850d8fd7SMoni Shoua EXPORT_SYMBOL(ib_get_rdma_header_version); 633c865f246SSomnath Kotur 634c865f246SSomnath Kotur static enum rdma_network_type ib_get_net_type_by_grh(struct ib_device *device, 635c865f246SSomnath Kotur u8 port_num, 636c865f246SSomnath Kotur const struct ib_grh *grh) 637c865f246SSomnath Kotur { 638c865f246SSomnath Kotur int grh_version; 639c865f246SSomnath Kotur 640c865f246SSomnath Kotur if (rdma_protocol_ib(device, port_num)) 641c865f246SSomnath Kotur return RDMA_NETWORK_IB; 642c865f246SSomnath Kotur 643850d8fd7SMoni Shoua grh_version = ib_get_rdma_header_version((union rdma_network_hdr *)grh); 644c865f246SSomnath Kotur 645c865f246SSomnath Kotur if (grh_version == 4) 646c865f246SSomnath Kotur return RDMA_NETWORK_IPV4; 647c865f246SSomnath Kotur 648c865f246SSomnath Kotur if (grh->next_hdr == IPPROTO_UDP) 649c865f246SSomnath Kotur return RDMA_NETWORK_IPV6; 650c865f246SSomnath Kotur 651c865f246SSomnath Kotur return RDMA_NETWORK_ROCE_V1; 652c865f246SSomnath Kotur } 653c865f246SSomnath Kotur 654dbf727deSMatan Barak struct find_gid_index_context { 655dbf727deSMatan Barak u16 vlan_id; 656c865f246SSomnath Kotur enum ib_gid_type gid_type; 657dbf727deSMatan Barak }; 658dbf727deSMatan Barak 659dbf727deSMatan Barak static bool find_gid_index(const union ib_gid *gid, 660dbf727deSMatan Barak const struct ib_gid_attr *gid_attr, 661dbf727deSMatan Barak void *context) 662dbf727deSMatan Barak { 663b0dd0d33SParav Pandit struct find_gid_index_context *ctx = context; 664dbf727deSMatan Barak 665c865f246SSomnath Kotur if (ctx->gid_type != gid_attr->gid_type) 666c865f246SSomnath Kotur return false; 667c865f246SSomnath Kotur 668dbf727deSMatan Barak if ((!!(ctx->vlan_id != 0xffff) == !is_vlan_dev(gid_attr->ndev)) || 669dbf727deSMatan Barak (is_vlan_dev(gid_attr->ndev) && 670dbf727deSMatan Barak vlan_dev_vlan_id(gid_attr->ndev) != ctx->vlan_id)) 671dbf727deSMatan Barak return false; 672dbf727deSMatan Barak 673dbf727deSMatan Barak return true; 674dbf727deSMatan Barak } 675dbf727deSMatan Barak 676b7403217SParav Pandit static const struct ib_gid_attr * 677b7403217SParav Pandit get_sgid_attr_from_eth(struct ib_device *device, u8 port_num, 678dbf727deSMatan Barak u16 vlan_id, const union ib_gid *sgid, 679b7403217SParav Pandit enum ib_gid_type gid_type) 680dbf727deSMatan Barak { 681c865f246SSomnath Kotur struct find_gid_index_context context = {.vlan_id = vlan_id, 682c865f246SSomnath Kotur .gid_type = gid_type}; 683dbf727deSMatan Barak 684b7403217SParav Pandit return rdma_find_gid_by_filter(device, sgid, port_num, find_gid_index, 685b7403217SParav Pandit &context); 686dbf727deSMatan Barak } 687dbf727deSMatan Barak 688850d8fd7SMoni Shoua int ib_get_gids_from_rdma_hdr(const union rdma_network_hdr *hdr, 689c865f246SSomnath Kotur enum rdma_network_type net_type, 690c865f246SSomnath Kotur union ib_gid *sgid, union ib_gid *dgid) 691c865f246SSomnath Kotur { 692c865f246SSomnath Kotur struct sockaddr_in src_in; 693c865f246SSomnath Kotur struct sockaddr_in dst_in; 694c865f246SSomnath Kotur __be32 src_saddr, dst_saddr; 695c865f246SSomnath Kotur 696c865f246SSomnath Kotur if (!sgid || !dgid) 697c865f246SSomnath Kotur return -EINVAL; 698c865f246SSomnath Kotur 699c865f246SSomnath Kotur if (net_type == RDMA_NETWORK_IPV4) { 700c865f246SSomnath Kotur memcpy(&src_in.sin_addr.s_addr, 701c865f246SSomnath Kotur &hdr->roce4grh.saddr, 4); 702c865f246SSomnath Kotur memcpy(&dst_in.sin_addr.s_addr, 703c865f246SSomnath Kotur &hdr->roce4grh.daddr, 4); 704c865f246SSomnath Kotur src_saddr = src_in.sin_addr.s_addr; 705c865f246SSomnath Kotur dst_saddr = dst_in.sin_addr.s_addr; 706c865f246SSomnath Kotur ipv6_addr_set_v4mapped(src_saddr, 707c865f246SSomnath Kotur (struct in6_addr *)sgid); 708c865f246SSomnath Kotur ipv6_addr_set_v4mapped(dst_saddr, 709c865f246SSomnath Kotur (struct in6_addr *)dgid); 710c865f246SSomnath Kotur return 0; 711c865f246SSomnath Kotur } else if (net_type == RDMA_NETWORK_IPV6 || 712c865f246SSomnath Kotur net_type == RDMA_NETWORK_IB) { 713c865f246SSomnath Kotur *dgid = hdr->ibgrh.dgid; 714c865f246SSomnath Kotur *sgid = hdr->ibgrh.sgid; 715c865f246SSomnath Kotur return 0; 716c865f246SSomnath Kotur } else { 717c865f246SSomnath Kotur return -EINVAL; 718c865f246SSomnath Kotur } 719c865f246SSomnath Kotur } 720850d8fd7SMoni Shoua EXPORT_SYMBOL(ib_get_gids_from_rdma_hdr); 721c865f246SSomnath Kotur 7221060f865SParav Pandit /* Resolve destination mac address and hop limit for unicast destination 7231060f865SParav Pandit * GID entry, considering the source GID entry as well. 7241060f865SParav Pandit * ah_attribute must have have valid port_num, sgid_index. 7251060f865SParav Pandit */ 7261060f865SParav Pandit static int ib_resolve_unicast_gid_dmac(struct ib_device *device, 7271060f865SParav Pandit struct rdma_ah_attr *ah_attr) 7281060f865SParav Pandit { 729b7403217SParav Pandit struct ib_global_route *grh = rdma_ah_retrieve_grh(ah_attr); 730b7403217SParav Pandit const struct ib_gid_attr *sgid_attr = grh->sgid_attr; 7311060f865SParav Pandit int hop_limit = 0xff; 732b7403217SParav Pandit int ret = 0; 7331060f865SParav Pandit 73456d0a7d9SParav Pandit /* If destination is link local and source GID is RoCEv1, 73556d0a7d9SParav Pandit * IP stack is not used. 73656d0a7d9SParav Pandit */ 73756d0a7d9SParav Pandit if (rdma_link_local_addr((struct in6_addr *)grh->dgid.raw) && 738b7403217SParav Pandit sgid_attr->gid_type == IB_GID_TYPE_ROCE) { 73956d0a7d9SParav Pandit rdma_get_ll_mac((struct in6_addr *)grh->dgid.raw, 74056d0a7d9SParav Pandit ah_attr->roce.dmac); 741b7403217SParav Pandit return ret; 74256d0a7d9SParav Pandit } 74356d0a7d9SParav Pandit 744b7403217SParav Pandit ret = rdma_addr_find_l2_eth_by_grh(&sgid_attr->gid, &grh->dgid, 7451060f865SParav Pandit ah_attr->roce.dmac, 7460e9d2c19SParav Pandit sgid_attr, &hop_limit); 7471060f865SParav Pandit 7481060f865SParav Pandit grh->hop_limit = hop_limit; 7491060f865SParav Pandit return ret; 7501060f865SParav Pandit } 7511060f865SParav Pandit 75228b5b3a2SGustavo A. R. Silva /* 753f6bdb142SParav Pandit * This function initializes address handle attributes from the incoming packet. 75428b5b3a2SGustavo A. R. Silva * Incoming packet has dgid of the receiver node on which this code is 75528b5b3a2SGustavo A. R. Silva * getting executed and, sgid contains the GID of the sender. 75628b5b3a2SGustavo A. R. Silva * 75728b5b3a2SGustavo A. R. Silva * When resolving mac address of destination, the arrived dgid is used 75828b5b3a2SGustavo A. R. Silva * as sgid and, sgid is used as dgid because sgid contains destinations 75928b5b3a2SGustavo A. R. Silva * GID whom to respond to. 76028b5b3a2SGustavo A. R. Silva * 761b7403217SParav Pandit * On success the caller is responsible to call rdma_destroy_ah_attr on the 762b7403217SParav Pandit * attr. 76328b5b3a2SGustavo A. R. Silva */ 764f6bdb142SParav Pandit int ib_init_ah_attr_from_wc(struct ib_device *device, u8 port_num, 76573cdaaeeSIra Weiny const struct ib_wc *wc, const struct ib_grh *grh, 76690898850SDasaratharaman Chandramouli struct rdma_ah_attr *ah_attr) 767513789edSHal Rosenstock { 768513789edSHal Rosenstock u32 flow_class; 769513789edSHal Rosenstock int ret; 770c865f246SSomnath Kotur enum rdma_network_type net_type = RDMA_NETWORK_IB; 771c865f246SSomnath Kotur enum ib_gid_type gid_type = IB_GID_TYPE_IB; 772b7403217SParav Pandit const struct ib_gid_attr *sgid_attr; 773c3efe750SMatan Barak int hoplimit = 0xff; 774c865f246SSomnath Kotur union ib_gid dgid; 775c865f246SSomnath Kotur union ib_gid sgid; 776513789edSHal Rosenstock 77779364227SRoland Dreier might_sleep(); 77879364227SRoland Dreier 7794e00d694SSean Hefty memset(ah_attr, 0, sizeof *ah_attr); 78044c58487SDasaratharaman Chandramouli ah_attr->type = rdma_ah_find_type(device, port_num); 781227128fcSMichael Wang if (rdma_cap_eth_ah(device, port_num)) { 782c865f246SSomnath Kotur if (wc->wc_flags & IB_WC_WITH_NETWORK_HDR_TYPE) 783c865f246SSomnath Kotur net_type = wc->network_hdr_type; 784c865f246SSomnath Kotur else 785c865f246SSomnath Kotur net_type = ib_get_net_type_by_grh(device, port_num, grh); 786c865f246SSomnath Kotur gid_type = ib_network_to_gid_type(net_type); 787c865f246SSomnath Kotur } 788850d8fd7SMoni Shoua ret = ib_get_gids_from_rdma_hdr((union rdma_network_hdr *)grh, net_type, 789c865f246SSomnath Kotur &sgid, &dgid); 790c865f246SSomnath Kotur if (ret) 791c865f246SSomnath Kotur return ret; 792c865f246SSomnath Kotur 7931060f865SParav Pandit rdma_ah_set_sl(ah_attr, wc->sl); 7941060f865SParav Pandit rdma_ah_set_port_num(ah_attr, port_num); 7951060f865SParav Pandit 796c865f246SSomnath Kotur if (rdma_protocol_roce(device, port_num)) { 797dbf727deSMatan Barak u16 vlan_id = wc->wc_flags & IB_WC_WITH_VLAN ? 798dbf727deSMatan Barak wc->vlan_id : 0xffff; 799dbf727deSMatan Barak 800dd5f03beSMatan Barak if (!(wc->wc_flags & IB_WC_GRH)) 801dd5f03beSMatan Barak return -EPROTOTYPE; 802dd5f03beSMatan Barak 803b7403217SParav Pandit sgid_attr = get_sgid_attr_from_eth(device, port_num, 8041060f865SParav Pandit vlan_id, &dgid, 805b7403217SParav Pandit gid_type); 806b7403217SParav Pandit if (IS_ERR(sgid_attr)) 807b7403217SParav Pandit return PTR_ERR(sgid_attr); 80820029832SMatan Barak 8091060f865SParav Pandit flow_class = be32_to_cpu(grh->version_tclass_flow); 810b7403217SParav Pandit rdma_move_grh_sgid_attr(ah_attr, 811b7403217SParav Pandit &sgid, 8121060f865SParav Pandit flow_class & 0xFFFFF, 813b7403217SParav Pandit hoplimit, 814b7403217SParav Pandit (flow_class >> 20) & 0xFF, 815b7403217SParav Pandit sgid_attr); 816b7403217SParav Pandit 817b7403217SParav Pandit ret = ib_resolve_unicast_gid_dmac(device, ah_attr); 818b7403217SParav Pandit if (ret) 819b7403217SParav Pandit rdma_destroy_ah_attr(ah_attr); 820b7403217SParav Pandit 821b7403217SParav Pandit return ret; 8221060f865SParav Pandit } else { 823d8966fcdSDasaratharaman Chandramouli rdma_ah_set_dlid(ah_attr, wc->slid); 824d8966fcdSDasaratharaman Chandramouli rdma_ah_set_path_bits(ah_attr, wc->dlid_path_bits); 825513789edSHal Rosenstock 826b7403217SParav Pandit if ((wc->wc_flags & IB_WC_GRH) == 0) 827b7403217SParav Pandit return 0; 828513789edSHal Rosenstock 829b7403217SParav Pandit if (dgid.global.interface_id != 830b7403217SParav Pandit cpu_to_be64(IB_SA_WELL_KNOWN_GUID)) { 831b7403217SParav Pandit sgid_attr = rdma_find_gid_by_port( 832b7403217SParav Pandit device, &dgid, IB_GID_TYPE_IB, port_num, NULL); 833b7403217SParav Pandit } else 834b7403217SParav Pandit sgid_attr = rdma_get_gid_attr(device, port_num, 0); 835b7403217SParav Pandit 836b7403217SParav Pandit if (IS_ERR(sgid_attr)) 837b7403217SParav Pandit return PTR_ERR(sgid_attr); 838497677abSHal Rosenstock flow_class = be32_to_cpu(grh->version_tclass_flow); 839b7403217SParav Pandit rdma_move_grh_sgid_attr(ah_attr, 840b7403217SParav Pandit &sgid, 841d8966fcdSDasaratharaman Chandramouli flow_class & 0xFFFFF, 842b7403217SParav Pandit hoplimit, 843b7403217SParav Pandit (flow_class >> 20) & 0xFF, 844b7403217SParav Pandit sgid_attr); 845b7403217SParav Pandit 8464e00d694SSean Hefty return 0; 8474e00d694SSean Hefty } 8481060f865SParav Pandit } 849f6bdb142SParav Pandit EXPORT_SYMBOL(ib_init_ah_attr_from_wc); 8504e00d694SSean Hefty 8518d9ec9adSJason Gunthorpe /** 8528d9ec9adSJason Gunthorpe * rdma_move_grh_sgid_attr - Sets the sgid attribute of GRH, taking ownership 8538d9ec9adSJason Gunthorpe * of the reference 8548d9ec9adSJason Gunthorpe * 8558d9ec9adSJason Gunthorpe * @attr: Pointer to AH attribute structure 8568d9ec9adSJason Gunthorpe * @dgid: Destination GID 8578d9ec9adSJason Gunthorpe * @flow_label: Flow label 8588d9ec9adSJason Gunthorpe * @hop_limit: Hop limit 8598d9ec9adSJason Gunthorpe * @traffic_class: traffic class 8608d9ec9adSJason Gunthorpe * @sgid_attr: Pointer to SGID attribute 8618d9ec9adSJason Gunthorpe * 8628d9ec9adSJason Gunthorpe * This takes ownership of the sgid_attr reference. The caller must ensure 8638d9ec9adSJason Gunthorpe * rdma_destroy_ah_attr() is called before destroying the rdma_ah_attr after 8648d9ec9adSJason Gunthorpe * calling this function. 8658d9ec9adSJason Gunthorpe */ 8668d9ec9adSJason Gunthorpe void rdma_move_grh_sgid_attr(struct rdma_ah_attr *attr, union ib_gid *dgid, 8678d9ec9adSJason Gunthorpe u32 flow_label, u8 hop_limit, u8 traffic_class, 8688d9ec9adSJason Gunthorpe const struct ib_gid_attr *sgid_attr) 8698d9ec9adSJason Gunthorpe { 8708d9ec9adSJason Gunthorpe rdma_ah_set_grh(attr, dgid, flow_label, sgid_attr->index, hop_limit, 8718d9ec9adSJason Gunthorpe traffic_class); 8728d9ec9adSJason Gunthorpe attr->grh.sgid_attr = sgid_attr; 8738d9ec9adSJason Gunthorpe } 8748d9ec9adSJason Gunthorpe EXPORT_SYMBOL(rdma_move_grh_sgid_attr); 8758d9ec9adSJason Gunthorpe 8768d9ec9adSJason Gunthorpe /** 8778d9ec9adSJason Gunthorpe * rdma_destroy_ah_attr - Release reference to SGID attribute of 8788d9ec9adSJason Gunthorpe * ah attribute. 8798d9ec9adSJason Gunthorpe * @ah_attr: Pointer to ah attribute 8808d9ec9adSJason Gunthorpe * 8818d9ec9adSJason Gunthorpe * Release reference to the SGID attribute of the ah attribute if it is 8828d9ec9adSJason Gunthorpe * non NULL. It is safe to call this multiple times, and safe to call it on 8838d9ec9adSJason Gunthorpe * a zero initialized ah_attr. 8848d9ec9adSJason Gunthorpe */ 8858d9ec9adSJason Gunthorpe void rdma_destroy_ah_attr(struct rdma_ah_attr *ah_attr) 8868d9ec9adSJason Gunthorpe { 8878d9ec9adSJason Gunthorpe if (ah_attr->grh.sgid_attr) { 8888d9ec9adSJason Gunthorpe rdma_put_gid_attr(ah_attr->grh.sgid_attr); 8898d9ec9adSJason Gunthorpe ah_attr->grh.sgid_attr = NULL; 8908d9ec9adSJason Gunthorpe } 8918d9ec9adSJason Gunthorpe } 8928d9ec9adSJason Gunthorpe EXPORT_SYMBOL(rdma_destroy_ah_attr); 8938d9ec9adSJason Gunthorpe 89473cdaaeeSIra Weiny struct ib_ah *ib_create_ah_from_wc(struct ib_pd *pd, const struct ib_wc *wc, 89573cdaaeeSIra Weiny const struct ib_grh *grh, u8 port_num) 8964e00d694SSean Hefty { 89790898850SDasaratharaman Chandramouli struct rdma_ah_attr ah_attr; 898b7403217SParav Pandit struct ib_ah *ah; 8994e00d694SSean Hefty int ret; 9004e00d694SSean Hefty 901f6bdb142SParav Pandit ret = ib_init_ah_attr_from_wc(pd->device, port_num, wc, grh, &ah_attr); 9024e00d694SSean Hefty if (ret) 9034e00d694SSean Hefty return ERR_PTR(ret); 904513789edSHal Rosenstock 905b090c4e3SGal Pressman ah = rdma_create_ah(pd, &ah_attr, RDMA_CREATE_AH_SLEEPABLE); 906b7403217SParav Pandit 907b7403217SParav Pandit rdma_destroy_ah_attr(&ah_attr); 908b7403217SParav Pandit return ah; 909513789edSHal Rosenstock } 910513789edSHal Rosenstock EXPORT_SYMBOL(ib_create_ah_from_wc); 911513789edSHal Rosenstock 91267b985b6SDasaratharaman Chandramouli int rdma_modify_ah(struct ib_ah *ah, struct rdma_ah_attr *ah_attr) 9131da177e4SLinus Torvalds { 9148d9ec9adSJason Gunthorpe const struct ib_gid_attr *old_sgid_attr; 9158d9ec9adSJason Gunthorpe int ret; 9168d9ec9adSJason Gunthorpe 91744c58487SDasaratharaman Chandramouli if (ah->type != ah_attr->type) 91844c58487SDasaratharaman Chandramouli return -EINVAL; 91944c58487SDasaratharaman Chandramouli 9208d9ec9adSJason Gunthorpe ret = rdma_fill_sgid_attr(ah->device, ah_attr, &old_sgid_attr); 9218d9ec9adSJason Gunthorpe if (ret) 9228d9ec9adSJason Gunthorpe return ret; 9238d9ec9adSJason Gunthorpe 9243023a1e9SKamal Heib ret = ah->device->ops.modify_ah ? 9253023a1e9SKamal Heib ah->device->ops.modify_ah(ah, ah_attr) : 92687915bf8SLeon Romanovsky -EOPNOTSUPP; 9278d9ec9adSJason Gunthorpe 9281a1f460fSJason Gunthorpe ah->sgid_attr = rdma_update_sgid_attr(ah_attr, ah->sgid_attr); 9298d9ec9adSJason Gunthorpe rdma_unfill_sgid_attr(ah_attr, old_sgid_attr); 9308d9ec9adSJason Gunthorpe return ret; 9311da177e4SLinus Torvalds } 93267b985b6SDasaratharaman Chandramouli EXPORT_SYMBOL(rdma_modify_ah); 9331da177e4SLinus Torvalds 934bfbfd661SDasaratharaman Chandramouli int rdma_query_ah(struct ib_ah *ah, struct rdma_ah_attr *ah_attr) 9351da177e4SLinus Torvalds { 9368d9ec9adSJason Gunthorpe ah_attr->grh.sgid_attr = NULL; 9378d9ec9adSJason Gunthorpe 9383023a1e9SKamal Heib return ah->device->ops.query_ah ? 9393023a1e9SKamal Heib ah->device->ops.query_ah(ah, ah_attr) : 94087915bf8SLeon Romanovsky -EOPNOTSUPP; 9411da177e4SLinus Torvalds } 942bfbfd661SDasaratharaman Chandramouli EXPORT_SYMBOL(rdma_query_ah); 9431da177e4SLinus Torvalds 944c4367a26SShamir Rabinovitch int rdma_destroy_ah_user(struct ib_ah *ah, u32 flags, struct ib_udata *udata) 9451da177e4SLinus Torvalds { 9461a1f460fSJason Gunthorpe const struct ib_gid_attr *sgid_attr = ah->sgid_attr; 9471da177e4SLinus Torvalds struct ib_pd *pd; 9481da177e4SLinus Torvalds 9492553ba21SGal Pressman might_sleep_if(flags & RDMA_DESTROY_AH_SLEEPABLE); 9502553ba21SGal Pressman 9511da177e4SLinus Torvalds pd = ah->pd; 952d3456914SLeon Romanovsky 953d3456914SLeon Romanovsky ah->device->ops.destroy_ah(ah, flags); 9541da177e4SLinus Torvalds atomic_dec(&pd->usecnt); 9551a1f460fSJason Gunthorpe if (sgid_attr) 9561a1f460fSJason Gunthorpe rdma_put_gid_attr(sgid_attr); 9571da177e4SLinus Torvalds 958d3456914SLeon Romanovsky kfree(ah); 959d3456914SLeon Romanovsky return 0; 9601da177e4SLinus Torvalds } 961c4367a26SShamir Rabinovitch EXPORT_SYMBOL(rdma_destroy_ah_user); 9621da177e4SLinus Torvalds 963d41fcc67SRoland Dreier /* Shared receive queues */ 964d41fcc67SRoland Dreier 965d41fcc67SRoland Dreier struct ib_srq *ib_create_srq(struct ib_pd *pd, 966d41fcc67SRoland Dreier struct ib_srq_init_attr *srq_init_attr) 967d41fcc67SRoland Dreier { 968d41fcc67SRoland Dreier struct ib_srq *srq; 96968e326deSLeon Romanovsky int ret; 970d41fcc67SRoland Dreier 9713023a1e9SKamal Heib if (!pd->device->ops.create_srq) 97287915bf8SLeon Romanovsky return ERR_PTR(-EOPNOTSUPP); 973d41fcc67SRoland Dreier 97468e326deSLeon Romanovsky srq = rdma_zalloc_drv_obj(pd->device, ib_srq); 97568e326deSLeon Romanovsky if (!srq) 97668e326deSLeon Romanovsky return ERR_PTR(-ENOMEM); 977d41fcc67SRoland Dreier 978d41fcc67SRoland Dreier srq->device = pd->device; 979d41fcc67SRoland Dreier srq->pd = pd; 980d41fcc67SRoland Dreier srq->event_handler = srq_init_attr->event_handler; 981d41fcc67SRoland Dreier srq->srq_context = srq_init_attr->srq_context; 98296104edaSSean Hefty srq->srq_type = srq_init_attr->srq_type; 98368e326deSLeon Romanovsky 9841a56ff6dSArtemy Kovalyov if (ib_srq_has_cq(srq->srq_type)) { 9851a56ff6dSArtemy Kovalyov srq->ext.cq = srq_init_attr->ext.cq; 9861a56ff6dSArtemy Kovalyov atomic_inc(&srq->ext.cq->usecnt); 9871a56ff6dSArtemy Kovalyov } 988418d5130SSean Hefty if (srq->srq_type == IB_SRQT_XRC) { 989418d5130SSean Hefty srq->ext.xrc.xrcd = srq_init_attr->ext.xrc.xrcd; 990418d5130SSean Hefty atomic_inc(&srq->ext.xrc.xrcd->usecnt); 991418d5130SSean Hefty } 992d41fcc67SRoland Dreier atomic_inc(&pd->usecnt); 99368e326deSLeon Romanovsky 99468e326deSLeon Romanovsky ret = pd->device->ops.create_srq(srq, srq_init_attr, NULL); 99568e326deSLeon Romanovsky if (ret) { 99668e326deSLeon Romanovsky atomic_dec(&srq->pd->usecnt); 99768e326deSLeon Romanovsky if (srq->srq_type == IB_SRQT_XRC) 99868e326deSLeon Romanovsky atomic_dec(&srq->ext.xrc.xrcd->usecnt); 99968e326deSLeon Romanovsky if (ib_srq_has_cq(srq->srq_type)) 100068e326deSLeon Romanovsky atomic_dec(&srq->ext.cq->usecnt); 100168e326deSLeon Romanovsky kfree(srq); 100268e326deSLeon Romanovsky return ERR_PTR(ret); 1003d41fcc67SRoland Dreier } 1004d41fcc67SRoland Dreier 1005d41fcc67SRoland Dreier return srq; 1006d41fcc67SRoland Dreier } 1007d41fcc67SRoland Dreier EXPORT_SYMBOL(ib_create_srq); 1008d41fcc67SRoland Dreier 1009d41fcc67SRoland Dreier int ib_modify_srq(struct ib_srq *srq, 1010d41fcc67SRoland Dreier struct ib_srq_attr *srq_attr, 1011d41fcc67SRoland Dreier enum ib_srq_attr_mask srq_attr_mask) 1012d41fcc67SRoland Dreier { 10133023a1e9SKamal Heib return srq->device->ops.modify_srq ? 10143023a1e9SKamal Heib srq->device->ops.modify_srq(srq, srq_attr, srq_attr_mask, 10153023a1e9SKamal Heib NULL) : -EOPNOTSUPP; 1016d41fcc67SRoland Dreier } 1017d41fcc67SRoland Dreier EXPORT_SYMBOL(ib_modify_srq); 1018d41fcc67SRoland Dreier 1019d41fcc67SRoland Dreier int ib_query_srq(struct ib_srq *srq, 1020d41fcc67SRoland Dreier struct ib_srq_attr *srq_attr) 1021d41fcc67SRoland Dreier { 10223023a1e9SKamal Heib return srq->device->ops.query_srq ? 10233023a1e9SKamal Heib srq->device->ops.query_srq(srq, srq_attr) : -EOPNOTSUPP; 1024d41fcc67SRoland Dreier } 1025d41fcc67SRoland Dreier EXPORT_SYMBOL(ib_query_srq); 1026d41fcc67SRoland Dreier 1027c4367a26SShamir Rabinovitch int ib_destroy_srq_user(struct ib_srq *srq, struct ib_udata *udata) 1028d41fcc67SRoland Dreier { 1029d41fcc67SRoland Dreier if (atomic_read(&srq->usecnt)) 1030d41fcc67SRoland Dreier return -EBUSY; 1031d41fcc67SRoland Dreier 103268e326deSLeon Romanovsky srq->device->ops.destroy_srq(srq, udata); 1033d41fcc67SRoland Dreier 103468e326deSLeon Romanovsky atomic_dec(&srq->pd->usecnt); 103568e326deSLeon Romanovsky if (srq->srq_type == IB_SRQT_XRC) 103668e326deSLeon Romanovsky atomic_dec(&srq->ext.xrc.xrcd->usecnt); 103768e326deSLeon Romanovsky if (ib_srq_has_cq(srq->srq_type)) 103868e326deSLeon Romanovsky atomic_dec(&srq->ext.cq->usecnt); 103968e326deSLeon Romanovsky kfree(srq); 1040d41fcc67SRoland Dreier 104168e326deSLeon Romanovsky return 0; 1042d41fcc67SRoland Dreier } 1043c4367a26SShamir Rabinovitch EXPORT_SYMBOL(ib_destroy_srq_user); 1044d41fcc67SRoland Dreier 10451da177e4SLinus Torvalds /* Queue pairs */ 10461da177e4SLinus Torvalds 10470e0ec7e0SSean Hefty static void __ib_shared_qp_event_handler(struct ib_event *event, void *context) 10480e0ec7e0SSean Hefty { 10490e0ec7e0SSean Hefty struct ib_qp *qp = context; 105073c40c61SYishai Hadas unsigned long flags; 10510e0ec7e0SSean Hefty 105273c40c61SYishai Hadas spin_lock_irqsave(&qp->device->event_handler_lock, flags); 10530e0ec7e0SSean Hefty list_for_each_entry(event->element.qp, &qp->open_list, open_list) 1054eec9e29fSShlomo Pongratz if (event->element.qp->event_handler) 10550e0ec7e0SSean Hefty event->element.qp->event_handler(event, event->element.qp->qp_context); 105673c40c61SYishai Hadas spin_unlock_irqrestore(&qp->device->event_handler_lock, flags); 10570e0ec7e0SSean Hefty } 10580e0ec7e0SSean Hefty 1059d3d72d90SSean Hefty static void __ib_insert_xrcd_qp(struct ib_xrcd *xrcd, struct ib_qp *qp) 1060d3d72d90SSean Hefty { 1061d3d72d90SSean Hefty mutex_lock(&xrcd->tgt_qp_mutex); 1062d3d72d90SSean Hefty list_add(&qp->xrcd_list, &xrcd->tgt_qp_list); 1063d3d72d90SSean Hefty mutex_unlock(&xrcd->tgt_qp_mutex); 1064d3d72d90SSean Hefty } 1065d3d72d90SSean Hefty 10660e0ec7e0SSean Hefty static struct ib_qp *__ib_open_qp(struct ib_qp *real_qp, 10670e0ec7e0SSean Hefty void (*event_handler)(struct ib_event *, void *), 10680e0ec7e0SSean Hefty void *qp_context) 1069d3d72d90SSean Hefty { 10700e0ec7e0SSean Hefty struct ib_qp *qp; 10710e0ec7e0SSean Hefty unsigned long flags; 1072d291f1a6SDaniel Jurgens int err; 10730e0ec7e0SSean Hefty 10740e0ec7e0SSean Hefty qp = kzalloc(sizeof *qp, GFP_KERNEL); 10750e0ec7e0SSean Hefty if (!qp) 10760e0ec7e0SSean Hefty return ERR_PTR(-ENOMEM); 10770e0ec7e0SSean Hefty 10780e0ec7e0SSean Hefty qp->real_qp = real_qp; 1079d291f1a6SDaniel Jurgens err = ib_open_shared_qp_security(qp, real_qp->device); 1080d291f1a6SDaniel Jurgens if (err) { 1081d291f1a6SDaniel Jurgens kfree(qp); 1082d291f1a6SDaniel Jurgens return ERR_PTR(err); 1083d291f1a6SDaniel Jurgens } 1084d291f1a6SDaniel Jurgens 1085d291f1a6SDaniel Jurgens qp->real_qp = real_qp; 10860e0ec7e0SSean Hefty atomic_inc(&real_qp->usecnt); 10870e0ec7e0SSean Hefty qp->device = real_qp->device; 10880e0ec7e0SSean Hefty qp->event_handler = event_handler; 10890e0ec7e0SSean Hefty qp->qp_context = qp_context; 10900e0ec7e0SSean Hefty qp->qp_num = real_qp->qp_num; 10910e0ec7e0SSean Hefty qp->qp_type = real_qp->qp_type; 10920e0ec7e0SSean Hefty 10930e0ec7e0SSean Hefty spin_lock_irqsave(&real_qp->device->event_handler_lock, flags); 10940e0ec7e0SSean Hefty list_add(&qp->open_list, &real_qp->open_list); 10950e0ec7e0SSean Hefty spin_unlock_irqrestore(&real_qp->device->event_handler_lock, flags); 10960e0ec7e0SSean Hefty 10970e0ec7e0SSean Hefty return qp; 1098d3d72d90SSean Hefty } 1099d3d72d90SSean Hefty 11000e0ec7e0SSean Hefty struct ib_qp *ib_open_qp(struct ib_xrcd *xrcd, 11010e0ec7e0SSean Hefty struct ib_qp_open_attr *qp_open_attr) 11020e0ec7e0SSean Hefty { 11030e0ec7e0SSean Hefty struct ib_qp *qp, *real_qp; 11040e0ec7e0SSean Hefty 11050e0ec7e0SSean Hefty if (qp_open_attr->qp_type != IB_QPT_XRC_TGT) 11060e0ec7e0SSean Hefty return ERR_PTR(-EINVAL); 11070e0ec7e0SSean Hefty 11080e0ec7e0SSean Hefty qp = ERR_PTR(-EINVAL); 11090e0ec7e0SSean Hefty mutex_lock(&xrcd->tgt_qp_mutex); 11100e0ec7e0SSean Hefty list_for_each_entry(real_qp, &xrcd->tgt_qp_list, xrcd_list) { 11110e0ec7e0SSean Hefty if (real_qp->qp_num == qp_open_attr->qp_num) { 11120e0ec7e0SSean Hefty qp = __ib_open_qp(real_qp, qp_open_attr->event_handler, 11130e0ec7e0SSean Hefty qp_open_attr->qp_context); 11140e0ec7e0SSean Hefty break; 11150e0ec7e0SSean Hefty } 11160e0ec7e0SSean Hefty } 11170e0ec7e0SSean Hefty mutex_unlock(&xrcd->tgt_qp_mutex); 11180e0ec7e0SSean Hefty return qp; 11190e0ec7e0SSean Hefty } 11200e0ec7e0SSean Hefty EXPORT_SYMBOL(ib_open_qp); 11210e0ec7e0SSean Hefty 1122c4367a26SShamir Rabinovitch static struct ib_qp *create_xrc_qp_user(struct ib_qp *qp, 1123c4367a26SShamir Rabinovitch struct ib_qp_init_attr *qp_init_attr, 1124c4367a26SShamir Rabinovitch struct ib_udata *udata) 11251da177e4SLinus Torvalds { 112604c41bf3SChristoph Hellwig struct ib_qp *real_qp = qp; 11271da177e4SLinus Torvalds 11280e0ec7e0SSean Hefty qp->event_handler = __ib_shared_qp_event_handler; 11290e0ec7e0SSean Hefty qp->qp_context = qp; 1130b42b63cfSSean Hefty qp->pd = NULL; 1131b42b63cfSSean Hefty qp->send_cq = qp->recv_cq = NULL; 1132b42b63cfSSean Hefty qp->srq = NULL; 1133b42b63cfSSean Hefty qp->xrcd = qp_init_attr->xrcd; 1134b42b63cfSSean Hefty atomic_inc(&qp_init_attr->xrcd->usecnt); 11350e0ec7e0SSean Hefty INIT_LIST_HEAD(&qp->open_list); 11360e0ec7e0SSean Hefty 11370e0ec7e0SSean Hefty qp = __ib_open_qp(real_qp, qp_init_attr->event_handler, 11380e0ec7e0SSean Hefty qp_init_attr->qp_context); 1139535005caSYuval Avnery if (IS_ERR(qp)) 1140535005caSYuval Avnery return qp; 1141535005caSYuval Avnery 11420e0ec7e0SSean Hefty __ib_insert_xrcd_qp(qp_init_attr->xrcd, real_qp); 114304c41bf3SChristoph Hellwig return qp; 114404c41bf3SChristoph Hellwig } 114504c41bf3SChristoph Hellwig 1146c4367a26SShamir Rabinovitch struct ib_qp *ib_create_qp_user(struct ib_pd *pd, 1147c4367a26SShamir Rabinovitch struct ib_qp_init_attr *qp_init_attr, 1148c4367a26SShamir Rabinovitch struct ib_udata *udata) 114904c41bf3SChristoph Hellwig { 115004c41bf3SChristoph Hellwig struct ib_device *device = pd ? pd->device : qp_init_attr->xrcd->device; 115104c41bf3SChristoph Hellwig struct ib_qp *qp; 1152a060b562SChristoph Hellwig int ret; 1153a060b562SChristoph Hellwig 1154a9017e23SYishai Hadas if (qp_init_attr->rwq_ind_tbl && 1155a9017e23SYishai Hadas (qp_init_attr->recv_cq || 1156a9017e23SYishai Hadas qp_init_attr->srq || qp_init_attr->cap.max_recv_wr || 1157a9017e23SYishai Hadas qp_init_attr->cap.max_recv_sge)) 1158a9017e23SYishai Hadas return ERR_PTR(-EINVAL); 1159a9017e23SYishai Hadas 1160a060b562SChristoph Hellwig /* 1161a060b562SChristoph Hellwig * If the callers is using the RDMA API calculate the resources 1162a060b562SChristoph Hellwig * needed for the RDMA READ/WRITE operations. 1163a060b562SChristoph Hellwig * 1164a060b562SChristoph Hellwig * Note that these callers need to pass in a port number. 1165a060b562SChristoph Hellwig */ 1166a060b562SChristoph Hellwig if (qp_init_attr->cap.max_rdma_ctxs) 1167a060b562SChristoph Hellwig rdma_rw_init_qp(device, qp_init_attr); 116804c41bf3SChristoph Hellwig 11692f08ee36SSteve Wise qp = _ib_create_qp(device, pd, qp_init_attr, NULL, NULL); 117004c41bf3SChristoph Hellwig if (IS_ERR(qp)) 117104c41bf3SChristoph Hellwig return qp; 117204c41bf3SChristoph Hellwig 1173d291f1a6SDaniel Jurgens ret = ib_create_qp_security(qp, device); 1174535005caSYuval Avnery if (ret) 1175535005caSYuval Avnery goto err; 1176d291f1a6SDaniel Jurgens 117704c41bf3SChristoph Hellwig qp->qp_type = qp_init_attr->qp_type; 1178a9017e23SYishai Hadas qp->rwq_ind_tbl = qp_init_attr->rwq_ind_tbl; 117904c41bf3SChristoph Hellwig 118004c41bf3SChristoph Hellwig atomic_set(&qp->usecnt, 0); 1181fffb0383SChristoph Hellwig qp->mrs_used = 0; 1182fffb0383SChristoph Hellwig spin_lock_init(&qp->mr_lock); 1183a060b562SChristoph Hellwig INIT_LIST_HEAD(&qp->rdma_mrs); 11840e353e34SChristoph Hellwig INIT_LIST_HEAD(&qp->sig_mrs); 1185498ca3c8SNoa Osherovich qp->port = 0; 1186fffb0383SChristoph Hellwig 1187535005caSYuval Avnery if (qp_init_attr->qp_type == IB_QPT_XRC_TGT) { 1188c4367a26SShamir Rabinovitch struct ib_qp *xrc_qp = 1189c4367a26SShamir Rabinovitch create_xrc_qp_user(qp, qp_init_attr, udata); 1190535005caSYuval Avnery 1191535005caSYuval Avnery if (IS_ERR(xrc_qp)) { 1192535005caSYuval Avnery ret = PTR_ERR(xrc_qp); 1193535005caSYuval Avnery goto err; 1194535005caSYuval Avnery } 1195535005caSYuval Avnery return xrc_qp; 1196535005caSYuval Avnery } 119704c41bf3SChristoph Hellwig 11981da177e4SLinus Torvalds qp->event_handler = qp_init_attr->event_handler; 11991da177e4SLinus Torvalds qp->qp_context = qp_init_attr->qp_context; 1200b42b63cfSSean Hefty if (qp_init_attr->qp_type == IB_QPT_XRC_INI) { 1201b42b63cfSSean Hefty qp->recv_cq = NULL; 1202b42b63cfSSean Hefty qp->srq = NULL; 1203b42b63cfSSean Hefty } else { 1204b42b63cfSSean Hefty qp->recv_cq = qp_init_attr->recv_cq; 1205a9017e23SYishai Hadas if (qp_init_attr->recv_cq) 1206b42b63cfSSean Hefty atomic_inc(&qp_init_attr->recv_cq->usecnt); 1207b42b63cfSSean Hefty qp->srq = qp_init_attr->srq; 1208b42b63cfSSean Hefty if (qp->srq) 1209b42b63cfSSean Hefty atomic_inc(&qp_init_attr->srq->usecnt); 1210b42b63cfSSean Hefty } 1211b42b63cfSSean Hefty 12121da177e4SLinus Torvalds qp->send_cq = qp_init_attr->send_cq; 1213b42b63cfSSean Hefty qp->xrcd = NULL; 1214b42b63cfSSean Hefty 12151da177e4SLinus Torvalds atomic_inc(&pd->usecnt); 1216a9017e23SYishai Hadas if (qp_init_attr->send_cq) 12171da177e4SLinus Torvalds atomic_inc(&qp_init_attr->send_cq->usecnt); 1218a9017e23SYishai Hadas if (qp_init_attr->rwq_ind_tbl) 1219a9017e23SYishai Hadas atomic_inc(&qp->rwq_ind_tbl->usecnt); 1220a060b562SChristoph Hellwig 1221a060b562SChristoph Hellwig if (qp_init_attr->cap.max_rdma_ctxs) { 1222a060b562SChristoph Hellwig ret = rdma_rw_init_mrs(qp, qp_init_attr); 1223535005caSYuval Avnery if (ret) 1224535005caSYuval Avnery goto err; 1225a060b562SChristoph Hellwig } 1226a060b562SChristoph Hellwig 1227632bc3f6SBart Van Assche /* 1228632bc3f6SBart Van Assche * Note: all hw drivers guarantee that max_send_sge is lower than 1229632bc3f6SBart Van Assche * the device RDMA WRITE SGE limit but not all hw drivers ensure that 1230632bc3f6SBart Van Assche * max_send_sge <= max_sge_rd. 1231632bc3f6SBart Van Assche */ 1232632bc3f6SBart Van Assche qp->max_write_sge = qp_init_attr->cap.max_send_sge; 1233632bc3f6SBart Van Assche qp->max_read_sge = min_t(u32, qp_init_attr->cap.max_send_sge, 1234632bc3f6SBart Van Assche device->attrs.max_sge_rd); 1235632bc3f6SBart Van Assche 12361da177e4SLinus Torvalds return qp; 1237535005caSYuval Avnery 1238535005caSYuval Avnery err: 1239535005caSYuval Avnery ib_destroy_qp(qp); 1240535005caSYuval Avnery return ERR_PTR(ret); 1241535005caSYuval Avnery 12421da177e4SLinus Torvalds } 1243c4367a26SShamir Rabinovitch EXPORT_SYMBOL(ib_create_qp_user); 12441da177e4SLinus Torvalds 12458a51866fSRoland Dreier static const struct { 12468a51866fSRoland Dreier int valid; 1247b42b63cfSSean Hefty enum ib_qp_attr_mask req_param[IB_QPT_MAX]; 1248b42b63cfSSean Hefty enum ib_qp_attr_mask opt_param[IB_QPT_MAX]; 12498a51866fSRoland Dreier } qp_state_table[IB_QPS_ERR + 1][IB_QPS_ERR + 1] = { 12508a51866fSRoland Dreier [IB_QPS_RESET] = { 12518a51866fSRoland Dreier [IB_QPS_RESET] = { .valid = 1 }, 12528a51866fSRoland Dreier [IB_QPS_INIT] = { 12538a51866fSRoland Dreier .valid = 1, 12548a51866fSRoland Dreier .req_param = { 12558a51866fSRoland Dreier [IB_QPT_UD] = (IB_QP_PKEY_INDEX | 12568a51866fSRoland Dreier IB_QP_PORT | 12578a51866fSRoland Dreier IB_QP_QKEY), 1258c938a616SOr Gerlitz [IB_QPT_RAW_PACKET] = IB_QP_PORT, 12598a51866fSRoland Dreier [IB_QPT_UC] = (IB_QP_PKEY_INDEX | 12608a51866fSRoland Dreier IB_QP_PORT | 12618a51866fSRoland Dreier IB_QP_ACCESS_FLAGS), 12628a51866fSRoland Dreier [IB_QPT_RC] = (IB_QP_PKEY_INDEX | 12638a51866fSRoland Dreier IB_QP_PORT | 12648a51866fSRoland Dreier IB_QP_ACCESS_FLAGS), 1265b42b63cfSSean Hefty [IB_QPT_XRC_INI] = (IB_QP_PKEY_INDEX | 1266b42b63cfSSean Hefty IB_QP_PORT | 1267b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS), 1268b42b63cfSSean Hefty [IB_QPT_XRC_TGT] = (IB_QP_PKEY_INDEX | 1269b42b63cfSSean Hefty IB_QP_PORT | 1270b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS), 12718a51866fSRoland Dreier [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | 12728a51866fSRoland Dreier IB_QP_QKEY), 12738a51866fSRoland Dreier [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | 12748a51866fSRoland Dreier IB_QP_QKEY), 12758a51866fSRoland Dreier } 12768a51866fSRoland Dreier }, 12778a51866fSRoland Dreier }, 12788a51866fSRoland Dreier [IB_QPS_INIT] = { 12798a51866fSRoland Dreier [IB_QPS_RESET] = { .valid = 1 }, 12808a51866fSRoland Dreier [IB_QPS_ERR] = { .valid = 1 }, 12818a51866fSRoland Dreier [IB_QPS_INIT] = { 12828a51866fSRoland Dreier .valid = 1, 12838a51866fSRoland Dreier .opt_param = { 12848a51866fSRoland Dreier [IB_QPT_UD] = (IB_QP_PKEY_INDEX | 12858a51866fSRoland Dreier IB_QP_PORT | 12868a51866fSRoland Dreier IB_QP_QKEY), 12878a51866fSRoland Dreier [IB_QPT_UC] = (IB_QP_PKEY_INDEX | 12888a51866fSRoland Dreier IB_QP_PORT | 12898a51866fSRoland Dreier IB_QP_ACCESS_FLAGS), 12908a51866fSRoland Dreier [IB_QPT_RC] = (IB_QP_PKEY_INDEX | 12918a51866fSRoland Dreier IB_QP_PORT | 12928a51866fSRoland Dreier IB_QP_ACCESS_FLAGS), 1293b42b63cfSSean Hefty [IB_QPT_XRC_INI] = (IB_QP_PKEY_INDEX | 1294b42b63cfSSean Hefty IB_QP_PORT | 1295b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS), 1296b42b63cfSSean Hefty [IB_QPT_XRC_TGT] = (IB_QP_PKEY_INDEX | 1297b42b63cfSSean Hefty IB_QP_PORT | 1298b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS), 12998a51866fSRoland Dreier [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | 13008a51866fSRoland Dreier IB_QP_QKEY), 13018a51866fSRoland Dreier [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | 13028a51866fSRoland Dreier IB_QP_QKEY), 13038a51866fSRoland Dreier } 13048a51866fSRoland Dreier }, 13058a51866fSRoland Dreier [IB_QPS_RTR] = { 13068a51866fSRoland Dreier .valid = 1, 13078a51866fSRoland Dreier .req_param = { 13088a51866fSRoland Dreier [IB_QPT_UC] = (IB_QP_AV | 13098a51866fSRoland Dreier IB_QP_PATH_MTU | 13108a51866fSRoland Dreier IB_QP_DEST_QPN | 13118a51866fSRoland Dreier IB_QP_RQ_PSN), 13128a51866fSRoland Dreier [IB_QPT_RC] = (IB_QP_AV | 13138a51866fSRoland Dreier IB_QP_PATH_MTU | 13148a51866fSRoland Dreier IB_QP_DEST_QPN | 13158a51866fSRoland Dreier IB_QP_RQ_PSN | 13168a51866fSRoland Dreier IB_QP_MAX_DEST_RD_ATOMIC | 13178a51866fSRoland Dreier IB_QP_MIN_RNR_TIMER), 1318b42b63cfSSean Hefty [IB_QPT_XRC_INI] = (IB_QP_AV | 1319b42b63cfSSean Hefty IB_QP_PATH_MTU | 1320b42b63cfSSean Hefty IB_QP_DEST_QPN | 1321b42b63cfSSean Hefty IB_QP_RQ_PSN), 1322b42b63cfSSean Hefty [IB_QPT_XRC_TGT] = (IB_QP_AV | 1323b42b63cfSSean Hefty IB_QP_PATH_MTU | 1324b42b63cfSSean Hefty IB_QP_DEST_QPN | 1325b42b63cfSSean Hefty IB_QP_RQ_PSN | 1326b42b63cfSSean Hefty IB_QP_MAX_DEST_RD_ATOMIC | 1327b42b63cfSSean Hefty IB_QP_MIN_RNR_TIMER), 13288a51866fSRoland Dreier }, 13298a51866fSRoland Dreier .opt_param = { 13308a51866fSRoland Dreier [IB_QPT_UD] = (IB_QP_PKEY_INDEX | 13318a51866fSRoland Dreier IB_QP_QKEY), 13328a51866fSRoland Dreier [IB_QPT_UC] = (IB_QP_ALT_PATH | 13338a51866fSRoland Dreier IB_QP_ACCESS_FLAGS | 13348a51866fSRoland Dreier IB_QP_PKEY_INDEX), 13358a51866fSRoland Dreier [IB_QPT_RC] = (IB_QP_ALT_PATH | 13368a51866fSRoland Dreier IB_QP_ACCESS_FLAGS | 13378a51866fSRoland Dreier IB_QP_PKEY_INDEX), 1338b42b63cfSSean Hefty [IB_QPT_XRC_INI] = (IB_QP_ALT_PATH | 1339b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS | 1340b42b63cfSSean Hefty IB_QP_PKEY_INDEX), 1341b42b63cfSSean Hefty [IB_QPT_XRC_TGT] = (IB_QP_ALT_PATH | 1342b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS | 1343b42b63cfSSean Hefty IB_QP_PKEY_INDEX), 13448a51866fSRoland Dreier [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | 13458a51866fSRoland Dreier IB_QP_QKEY), 13468a51866fSRoland Dreier [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | 13478a51866fSRoland Dreier IB_QP_QKEY), 1348dd5f03beSMatan Barak }, 1349dbf727deSMatan Barak }, 13508a51866fSRoland Dreier }, 13518a51866fSRoland Dreier [IB_QPS_RTR] = { 13528a51866fSRoland Dreier [IB_QPS_RESET] = { .valid = 1 }, 13538a51866fSRoland Dreier [IB_QPS_ERR] = { .valid = 1 }, 13548a51866fSRoland Dreier [IB_QPS_RTS] = { 13558a51866fSRoland Dreier .valid = 1, 13568a51866fSRoland Dreier .req_param = { 13578a51866fSRoland Dreier [IB_QPT_UD] = IB_QP_SQ_PSN, 13588a51866fSRoland Dreier [IB_QPT_UC] = IB_QP_SQ_PSN, 13598a51866fSRoland Dreier [IB_QPT_RC] = (IB_QP_TIMEOUT | 13608a51866fSRoland Dreier IB_QP_RETRY_CNT | 13618a51866fSRoland Dreier IB_QP_RNR_RETRY | 13628a51866fSRoland Dreier IB_QP_SQ_PSN | 13638a51866fSRoland Dreier IB_QP_MAX_QP_RD_ATOMIC), 1364b42b63cfSSean Hefty [IB_QPT_XRC_INI] = (IB_QP_TIMEOUT | 1365b42b63cfSSean Hefty IB_QP_RETRY_CNT | 1366b42b63cfSSean Hefty IB_QP_RNR_RETRY | 1367b42b63cfSSean Hefty IB_QP_SQ_PSN | 1368b42b63cfSSean Hefty IB_QP_MAX_QP_RD_ATOMIC), 1369b42b63cfSSean Hefty [IB_QPT_XRC_TGT] = (IB_QP_TIMEOUT | 1370b42b63cfSSean Hefty IB_QP_SQ_PSN), 13718a51866fSRoland Dreier [IB_QPT_SMI] = IB_QP_SQ_PSN, 13728a51866fSRoland Dreier [IB_QPT_GSI] = IB_QP_SQ_PSN, 13738a51866fSRoland Dreier }, 13748a51866fSRoland Dreier .opt_param = { 13758a51866fSRoland Dreier [IB_QPT_UD] = (IB_QP_CUR_STATE | 13768a51866fSRoland Dreier IB_QP_QKEY), 13778a51866fSRoland Dreier [IB_QPT_UC] = (IB_QP_CUR_STATE | 13788a51866fSRoland Dreier IB_QP_ALT_PATH | 13798a51866fSRoland Dreier IB_QP_ACCESS_FLAGS | 13808a51866fSRoland Dreier IB_QP_PATH_MIG_STATE), 13818a51866fSRoland Dreier [IB_QPT_RC] = (IB_QP_CUR_STATE | 13828a51866fSRoland Dreier IB_QP_ALT_PATH | 13838a51866fSRoland Dreier IB_QP_ACCESS_FLAGS | 13848a51866fSRoland Dreier IB_QP_MIN_RNR_TIMER | 13858a51866fSRoland Dreier IB_QP_PATH_MIG_STATE), 1386b42b63cfSSean Hefty [IB_QPT_XRC_INI] = (IB_QP_CUR_STATE | 1387b42b63cfSSean Hefty IB_QP_ALT_PATH | 1388b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS | 1389b42b63cfSSean Hefty IB_QP_PATH_MIG_STATE), 1390b42b63cfSSean Hefty [IB_QPT_XRC_TGT] = (IB_QP_CUR_STATE | 1391b42b63cfSSean Hefty IB_QP_ALT_PATH | 1392b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS | 1393b42b63cfSSean Hefty IB_QP_MIN_RNR_TIMER | 1394b42b63cfSSean Hefty IB_QP_PATH_MIG_STATE), 13958a51866fSRoland Dreier [IB_QPT_SMI] = (IB_QP_CUR_STATE | 13968a51866fSRoland Dreier IB_QP_QKEY), 13978a51866fSRoland Dreier [IB_QPT_GSI] = (IB_QP_CUR_STATE | 13988a51866fSRoland Dreier IB_QP_QKEY), 1399528e5a1bSBodong Wang [IB_QPT_RAW_PACKET] = IB_QP_RATE_LIMIT, 14008a51866fSRoland Dreier } 14018a51866fSRoland Dreier } 14028a51866fSRoland Dreier }, 14038a51866fSRoland Dreier [IB_QPS_RTS] = { 14048a51866fSRoland Dreier [IB_QPS_RESET] = { .valid = 1 }, 14058a51866fSRoland Dreier [IB_QPS_ERR] = { .valid = 1 }, 14068a51866fSRoland Dreier [IB_QPS_RTS] = { 14078a51866fSRoland Dreier .valid = 1, 14088a51866fSRoland Dreier .opt_param = { 14098a51866fSRoland Dreier [IB_QPT_UD] = (IB_QP_CUR_STATE | 14108a51866fSRoland Dreier IB_QP_QKEY), 14114546d31dSDotan Barak [IB_QPT_UC] = (IB_QP_CUR_STATE | 14124546d31dSDotan Barak IB_QP_ACCESS_FLAGS | 14138a51866fSRoland Dreier IB_QP_ALT_PATH | 14148a51866fSRoland Dreier IB_QP_PATH_MIG_STATE), 14154546d31dSDotan Barak [IB_QPT_RC] = (IB_QP_CUR_STATE | 14164546d31dSDotan Barak IB_QP_ACCESS_FLAGS | 14178a51866fSRoland Dreier IB_QP_ALT_PATH | 14188a51866fSRoland Dreier IB_QP_PATH_MIG_STATE | 14198a51866fSRoland Dreier IB_QP_MIN_RNR_TIMER), 1420b42b63cfSSean Hefty [IB_QPT_XRC_INI] = (IB_QP_CUR_STATE | 1421b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS | 1422b42b63cfSSean Hefty IB_QP_ALT_PATH | 1423b42b63cfSSean Hefty IB_QP_PATH_MIG_STATE), 1424b42b63cfSSean Hefty [IB_QPT_XRC_TGT] = (IB_QP_CUR_STATE | 1425b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS | 1426b42b63cfSSean Hefty IB_QP_ALT_PATH | 1427b42b63cfSSean Hefty IB_QP_PATH_MIG_STATE | 1428b42b63cfSSean Hefty IB_QP_MIN_RNR_TIMER), 14298a51866fSRoland Dreier [IB_QPT_SMI] = (IB_QP_CUR_STATE | 14308a51866fSRoland Dreier IB_QP_QKEY), 14318a51866fSRoland Dreier [IB_QPT_GSI] = (IB_QP_CUR_STATE | 14328a51866fSRoland Dreier IB_QP_QKEY), 1433528e5a1bSBodong Wang [IB_QPT_RAW_PACKET] = IB_QP_RATE_LIMIT, 14348a51866fSRoland Dreier } 14358a51866fSRoland Dreier }, 14368a51866fSRoland Dreier [IB_QPS_SQD] = { 14378a51866fSRoland Dreier .valid = 1, 14388a51866fSRoland Dreier .opt_param = { 14398a51866fSRoland Dreier [IB_QPT_UD] = IB_QP_EN_SQD_ASYNC_NOTIFY, 14408a51866fSRoland Dreier [IB_QPT_UC] = IB_QP_EN_SQD_ASYNC_NOTIFY, 14418a51866fSRoland Dreier [IB_QPT_RC] = IB_QP_EN_SQD_ASYNC_NOTIFY, 1442b42b63cfSSean Hefty [IB_QPT_XRC_INI] = IB_QP_EN_SQD_ASYNC_NOTIFY, 1443b42b63cfSSean Hefty [IB_QPT_XRC_TGT] = IB_QP_EN_SQD_ASYNC_NOTIFY, /* ??? */ 14448a51866fSRoland Dreier [IB_QPT_SMI] = IB_QP_EN_SQD_ASYNC_NOTIFY, 14458a51866fSRoland Dreier [IB_QPT_GSI] = IB_QP_EN_SQD_ASYNC_NOTIFY 14468a51866fSRoland Dreier } 14478a51866fSRoland Dreier }, 14488a51866fSRoland Dreier }, 14498a51866fSRoland Dreier [IB_QPS_SQD] = { 14508a51866fSRoland Dreier [IB_QPS_RESET] = { .valid = 1 }, 14518a51866fSRoland Dreier [IB_QPS_ERR] = { .valid = 1 }, 14528a51866fSRoland Dreier [IB_QPS_RTS] = { 14538a51866fSRoland Dreier .valid = 1, 14548a51866fSRoland Dreier .opt_param = { 14558a51866fSRoland Dreier [IB_QPT_UD] = (IB_QP_CUR_STATE | 14568a51866fSRoland Dreier IB_QP_QKEY), 14578a51866fSRoland Dreier [IB_QPT_UC] = (IB_QP_CUR_STATE | 14588a51866fSRoland Dreier IB_QP_ALT_PATH | 14598a51866fSRoland Dreier IB_QP_ACCESS_FLAGS | 14608a51866fSRoland Dreier IB_QP_PATH_MIG_STATE), 14618a51866fSRoland Dreier [IB_QPT_RC] = (IB_QP_CUR_STATE | 14628a51866fSRoland Dreier IB_QP_ALT_PATH | 14638a51866fSRoland Dreier IB_QP_ACCESS_FLAGS | 14648a51866fSRoland Dreier IB_QP_MIN_RNR_TIMER | 14658a51866fSRoland Dreier IB_QP_PATH_MIG_STATE), 1466b42b63cfSSean Hefty [IB_QPT_XRC_INI] = (IB_QP_CUR_STATE | 1467b42b63cfSSean Hefty IB_QP_ALT_PATH | 1468b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS | 1469b42b63cfSSean Hefty IB_QP_PATH_MIG_STATE), 1470b42b63cfSSean Hefty [IB_QPT_XRC_TGT] = (IB_QP_CUR_STATE | 1471b42b63cfSSean Hefty IB_QP_ALT_PATH | 1472b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS | 1473b42b63cfSSean Hefty IB_QP_MIN_RNR_TIMER | 1474b42b63cfSSean Hefty IB_QP_PATH_MIG_STATE), 14758a51866fSRoland Dreier [IB_QPT_SMI] = (IB_QP_CUR_STATE | 14768a51866fSRoland Dreier IB_QP_QKEY), 14778a51866fSRoland Dreier [IB_QPT_GSI] = (IB_QP_CUR_STATE | 14788a51866fSRoland Dreier IB_QP_QKEY), 14798a51866fSRoland Dreier } 14808a51866fSRoland Dreier }, 14818a51866fSRoland Dreier [IB_QPS_SQD] = { 14828a51866fSRoland Dreier .valid = 1, 14838a51866fSRoland Dreier .opt_param = { 14848a51866fSRoland Dreier [IB_QPT_UD] = (IB_QP_PKEY_INDEX | 14858a51866fSRoland Dreier IB_QP_QKEY), 14868a51866fSRoland Dreier [IB_QPT_UC] = (IB_QP_AV | 14878a51866fSRoland Dreier IB_QP_ALT_PATH | 14888a51866fSRoland Dreier IB_QP_ACCESS_FLAGS | 14898a51866fSRoland Dreier IB_QP_PKEY_INDEX | 14908a51866fSRoland Dreier IB_QP_PATH_MIG_STATE), 14918a51866fSRoland Dreier [IB_QPT_RC] = (IB_QP_PORT | 14928a51866fSRoland Dreier IB_QP_AV | 14938a51866fSRoland Dreier IB_QP_TIMEOUT | 14948a51866fSRoland Dreier IB_QP_RETRY_CNT | 14958a51866fSRoland Dreier IB_QP_RNR_RETRY | 14968a51866fSRoland Dreier IB_QP_MAX_QP_RD_ATOMIC | 14978a51866fSRoland Dreier IB_QP_MAX_DEST_RD_ATOMIC | 14988a51866fSRoland Dreier IB_QP_ALT_PATH | 14998a51866fSRoland Dreier IB_QP_ACCESS_FLAGS | 15008a51866fSRoland Dreier IB_QP_PKEY_INDEX | 15018a51866fSRoland Dreier IB_QP_MIN_RNR_TIMER | 15028a51866fSRoland Dreier IB_QP_PATH_MIG_STATE), 1503b42b63cfSSean Hefty [IB_QPT_XRC_INI] = (IB_QP_PORT | 1504b42b63cfSSean Hefty IB_QP_AV | 1505b42b63cfSSean Hefty IB_QP_TIMEOUT | 1506b42b63cfSSean Hefty IB_QP_RETRY_CNT | 1507b42b63cfSSean Hefty IB_QP_RNR_RETRY | 1508b42b63cfSSean Hefty IB_QP_MAX_QP_RD_ATOMIC | 1509b42b63cfSSean Hefty IB_QP_ALT_PATH | 1510b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS | 1511b42b63cfSSean Hefty IB_QP_PKEY_INDEX | 1512b42b63cfSSean Hefty IB_QP_PATH_MIG_STATE), 1513b42b63cfSSean Hefty [IB_QPT_XRC_TGT] = (IB_QP_PORT | 1514b42b63cfSSean Hefty IB_QP_AV | 1515b42b63cfSSean Hefty IB_QP_TIMEOUT | 1516b42b63cfSSean Hefty IB_QP_MAX_DEST_RD_ATOMIC | 1517b42b63cfSSean Hefty IB_QP_ALT_PATH | 1518b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS | 1519b42b63cfSSean Hefty IB_QP_PKEY_INDEX | 1520b42b63cfSSean Hefty IB_QP_MIN_RNR_TIMER | 1521b42b63cfSSean Hefty IB_QP_PATH_MIG_STATE), 15228a51866fSRoland Dreier [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | 15238a51866fSRoland Dreier IB_QP_QKEY), 15248a51866fSRoland Dreier [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | 15258a51866fSRoland Dreier IB_QP_QKEY), 15268a51866fSRoland Dreier } 15278a51866fSRoland Dreier } 15288a51866fSRoland Dreier }, 15298a51866fSRoland Dreier [IB_QPS_SQE] = { 15308a51866fSRoland Dreier [IB_QPS_RESET] = { .valid = 1 }, 15318a51866fSRoland Dreier [IB_QPS_ERR] = { .valid = 1 }, 15328a51866fSRoland Dreier [IB_QPS_RTS] = { 15338a51866fSRoland Dreier .valid = 1, 15348a51866fSRoland Dreier .opt_param = { 15358a51866fSRoland Dreier [IB_QPT_UD] = (IB_QP_CUR_STATE | 15368a51866fSRoland Dreier IB_QP_QKEY), 15378a51866fSRoland Dreier [IB_QPT_UC] = (IB_QP_CUR_STATE | 15388a51866fSRoland Dreier IB_QP_ACCESS_FLAGS), 15398a51866fSRoland Dreier [IB_QPT_SMI] = (IB_QP_CUR_STATE | 15408a51866fSRoland Dreier IB_QP_QKEY), 15418a51866fSRoland Dreier [IB_QPT_GSI] = (IB_QP_CUR_STATE | 15428a51866fSRoland Dreier IB_QP_QKEY), 15438a51866fSRoland Dreier } 15448a51866fSRoland Dreier } 15458a51866fSRoland Dreier }, 15468a51866fSRoland Dreier [IB_QPS_ERR] = { 15478a51866fSRoland Dreier [IB_QPS_RESET] = { .valid = 1 }, 15488a51866fSRoland Dreier [IB_QPS_ERR] = { .valid = 1 } 15498a51866fSRoland Dreier } 15508a51866fSRoland Dreier }; 15518a51866fSRoland Dreier 155219b1f540SLeon Romanovsky bool ib_modify_qp_is_ok(enum ib_qp_state cur_state, enum ib_qp_state next_state, 1553d31131bbSKamal Heib enum ib_qp_type type, enum ib_qp_attr_mask mask) 15548a51866fSRoland Dreier { 15558a51866fSRoland Dreier enum ib_qp_attr_mask req_param, opt_param; 15568a51866fSRoland Dreier 15578a51866fSRoland Dreier if (mask & IB_QP_CUR_STATE && 15588a51866fSRoland Dreier cur_state != IB_QPS_RTR && cur_state != IB_QPS_RTS && 15598a51866fSRoland Dreier cur_state != IB_QPS_SQD && cur_state != IB_QPS_SQE) 156019b1f540SLeon Romanovsky return false; 15618a51866fSRoland Dreier 15628a51866fSRoland Dreier if (!qp_state_table[cur_state][next_state].valid) 156319b1f540SLeon Romanovsky return false; 15648a51866fSRoland Dreier 15658a51866fSRoland Dreier req_param = qp_state_table[cur_state][next_state].req_param[type]; 15668a51866fSRoland Dreier opt_param = qp_state_table[cur_state][next_state].opt_param[type]; 15678a51866fSRoland Dreier 15688a51866fSRoland Dreier if ((mask & req_param) != req_param) 156919b1f540SLeon Romanovsky return false; 15708a51866fSRoland Dreier 15718a51866fSRoland Dreier if (mask & ~(req_param | opt_param | IB_QP_STATE)) 157219b1f540SLeon Romanovsky return false; 15738a51866fSRoland Dreier 157419b1f540SLeon Romanovsky return true; 15758a51866fSRoland Dreier } 15768a51866fSRoland Dreier EXPORT_SYMBOL(ib_modify_qp_is_ok); 15778a51866fSRoland Dreier 1578947c99ecSParav Pandit /** 1579947c99ecSParav Pandit * ib_resolve_eth_dmac - Resolve destination mac address 1580947c99ecSParav Pandit * @device: Device to consider 1581947c99ecSParav Pandit * @ah_attr: address handle attribute which describes the 1582947c99ecSParav Pandit * source and destination parameters 1583947c99ecSParav Pandit * ib_resolve_eth_dmac() resolves destination mac address and L3 hop limit It 1584947c99ecSParav Pandit * returns 0 on success or appropriate error code. It initializes the 1585947c99ecSParav Pandit * necessary ah_attr fields when call is successful. 1586947c99ecSParav Pandit */ 1587c0348eb0SParav Pandit static int ib_resolve_eth_dmac(struct ib_device *device, 158890898850SDasaratharaman Chandramouli struct rdma_ah_attr *ah_attr) 1589ed4c54e5SOr Gerlitz { 1590ed4c54e5SOr Gerlitz int ret = 0; 1591d8966fcdSDasaratharaman Chandramouli 15929636a56fSNoa Osherovich if (rdma_is_multicast_addr((struct in6_addr *)ah_attr->grh.dgid.raw)) { 15939636a56fSNoa Osherovich if (ipv6_addr_v4mapped((struct in6_addr *)ah_attr->grh.dgid.raw)) { 15949636a56fSNoa Osherovich __be32 addr = 0; 15959636a56fSNoa Osherovich 15969636a56fSNoa Osherovich memcpy(&addr, ah_attr->grh.dgid.raw + 12, 4); 15979636a56fSNoa Osherovich ip_eth_mc_map(addr, (char *)ah_attr->roce.dmac); 15989636a56fSNoa Osherovich } else { 15999636a56fSNoa Osherovich ipv6_eth_mc_map((struct in6_addr *)ah_attr->grh.dgid.raw, 16009636a56fSNoa Osherovich (char *)ah_attr->roce.dmac); 16019636a56fSNoa Osherovich } 1602ed4c54e5SOr Gerlitz } else { 16031060f865SParav Pandit ret = ib_resolve_unicast_gid_dmac(device, ah_attr); 1604ed4c54e5SOr Gerlitz } 1605ed4c54e5SOr Gerlitz return ret; 1606ed4c54e5SOr Gerlitz } 1607ed4c54e5SOr Gerlitz 16088d9ec9adSJason Gunthorpe static bool is_qp_type_connected(const struct ib_qp *qp) 16098d9ec9adSJason Gunthorpe { 16108d9ec9adSJason Gunthorpe return (qp->qp_type == IB_QPT_UC || 16118d9ec9adSJason Gunthorpe qp->qp_type == IB_QPT_RC || 16128d9ec9adSJason Gunthorpe qp->qp_type == IB_QPT_XRC_INI || 16138d9ec9adSJason Gunthorpe qp->qp_type == IB_QPT_XRC_TGT); 16148d9ec9adSJason Gunthorpe } 16158d9ec9adSJason Gunthorpe 1616a512c2fbSParav Pandit /** 1617b96ac05aSParav Pandit * IB core internal function to perform QP attributes modification. 1618a512c2fbSParav Pandit */ 1619b96ac05aSParav Pandit static int _ib_modify_qp(struct ib_qp *qp, struct ib_qp_attr *attr, 1620a512c2fbSParav Pandit int attr_mask, struct ib_udata *udata) 1621a512c2fbSParav Pandit { 1622727b7e9aSMajd Dibbiny u8 port = attr_mask & IB_QP_PORT ? attr->port_num : qp->port; 16238d9ec9adSJason Gunthorpe const struct ib_gid_attr *old_sgid_attr_av; 16248d9ec9adSJason Gunthorpe const struct ib_gid_attr *old_sgid_attr_alt_av; 1625a512c2fbSParav Pandit int ret; 1626a512c2fbSParav Pandit 16278d9ec9adSJason Gunthorpe if (attr_mask & IB_QP_AV) { 16288d9ec9adSJason Gunthorpe ret = rdma_fill_sgid_attr(qp->device, &attr->ah_attr, 16298d9ec9adSJason Gunthorpe &old_sgid_attr_av); 16308d9ec9adSJason Gunthorpe if (ret) 16318d9ec9adSJason Gunthorpe return ret; 16328d9ec9adSJason Gunthorpe } 16338d9ec9adSJason Gunthorpe if (attr_mask & IB_QP_ALT_PATH) { 16341a1f460fSJason Gunthorpe /* 16351a1f460fSJason Gunthorpe * FIXME: This does not track the migration state, so if the 16361a1f460fSJason Gunthorpe * user loads a new alternate path after the HW has migrated 16371a1f460fSJason Gunthorpe * from primary->alternate we will keep the wrong 16381a1f460fSJason Gunthorpe * references. This is OK for IB because the reference 16391a1f460fSJason Gunthorpe * counting does not serve any functional purpose. 16401a1f460fSJason Gunthorpe */ 16418d9ec9adSJason Gunthorpe ret = rdma_fill_sgid_attr(qp->device, &attr->alt_ah_attr, 16428d9ec9adSJason Gunthorpe &old_sgid_attr_alt_av); 16438d9ec9adSJason Gunthorpe if (ret) 16448d9ec9adSJason Gunthorpe goto out_av; 16457a5c938bSJason Gunthorpe 16467a5c938bSJason Gunthorpe /* 16477a5c938bSJason Gunthorpe * Today the core code can only handle alternate paths and APM 16487a5c938bSJason Gunthorpe * for IB. Ban them in roce mode. 16497a5c938bSJason Gunthorpe */ 16507a5c938bSJason Gunthorpe if (!(rdma_protocol_ib(qp->device, 16517a5c938bSJason Gunthorpe attr->alt_ah_attr.port_num) && 16527a5c938bSJason Gunthorpe rdma_protocol_ib(qp->device, port))) { 16537a5c938bSJason Gunthorpe ret = EINVAL; 16547a5c938bSJason Gunthorpe goto out; 16557a5c938bSJason Gunthorpe } 16568d9ec9adSJason Gunthorpe } 16578d9ec9adSJason Gunthorpe 16588d9ec9adSJason Gunthorpe /* 16598d9ec9adSJason Gunthorpe * If the user provided the qp_attr then we have to resolve it. Kernel 16608d9ec9adSJason Gunthorpe * users have to provide already resolved rdma_ah_attr's 16618d9ec9adSJason Gunthorpe */ 16628d9ec9adSJason Gunthorpe if (udata && (attr_mask & IB_QP_AV) && 16638d9ec9adSJason Gunthorpe attr->ah_attr.type == RDMA_AH_ATTR_TYPE_ROCE && 16648d9ec9adSJason Gunthorpe is_qp_type_connected(qp)) { 16658d9ec9adSJason Gunthorpe ret = ib_resolve_eth_dmac(qp->device, &attr->ah_attr); 16668d9ec9adSJason Gunthorpe if (ret) 16678d9ec9adSJason Gunthorpe goto out; 16688d9ec9adSJason Gunthorpe } 16698d9ec9adSJason Gunthorpe 1670727b7e9aSMajd Dibbiny if (rdma_ib_or_roce(qp->device, port)) { 1671727b7e9aSMajd Dibbiny if (attr_mask & IB_QP_RQ_PSN && attr->rq_psn & ~0xffffff) { 167243c7c851SJason Gunthorpe dev_warn(&qp->device->dev, 167343c7c851SJason Gunthorpe "%s rq_psn overflow, masking to 24 bits\n", 167443c7c851SJason Gunthorpe __func__); 1675727b7e9aSMajd Dibbiny attr->rq_psn &= 0xffffff; 1676727b7e9aSMajd Dibbiny } 1677727b7e9aSMajd Dibbiny 1678727b7e9aSMajd Dibbiny if (attr_mask & IB_QP_SQ_PSN && attr->sq_psn & ~0xffffff) { 167943c7c851SJason Gunthorpe dev_warn(&qp->device->dev, 168043c7c851SJason Gunthorpe " %s sq_psn overflow, masking to 24 bits\n", 168143c7c851SJason Gunthorpe __func__); 1682727b7e9aSMajd Dibbiny attr->sq_psn &= 0xffffff; 1683727b7e9aSMajd Dibbiny } 1684727b7e9aSMajd Dibbiny } 1685727b7e9aSMajd Dibbiny 1686498ca3c8SNoa Osherovich ret = ib_security_modify_qp(qp, attr, attr_mask, udata); 16871a1f460fSJason Gunthorpe if (ret) 16881a1f460fSJason Gunthorpe goto out; 16891a1f460fSJason Gunthorpe 16901a1f460fSJason Gunthorpe if (attr_mask & IB_QP_PORT) 1691498ca3c8SNoa Osherovich qp->port = attr->port_num; 16921a1f460fSJason Gunthorpe if (attr_mask & IB_QP_AV) 16931a1f460fSJason Gunthorpe qp->av_sgid_attr = 16941a1f460fSJason Gunthorpe rdma_update_sgid_attr(&attr->ah_attr, qp->av_sgid_attr); 16951a1f460fSJason Gunthorpe if (attr_mask & IB_QP_ALT_PATH) 16961a1f460fSJason Gunthorpe qp->alt_path_sgid_attr = rdma_update_sgid_attr( 16971a1f460fSJason Gunthorpe &attr->alt_ah_attr, qp->alt_path_sgid_attr); 1698498ca3c8SNoa Osherovich 16998d9ec9adSJason Gunthorpe out: 17008d9ec9adSJason Gunthorpe if (attr_mask & IB_QP_ALT_PATH) 17018d9ec9adSJason Gunthorpe rdma_unfill_sgid_attr(&attr->alt_ah_attr, old_sgid_attr_alt_av); 17028d9ec9adSJason Gunthorpe out_av: 17038d9ec9adSJason Gunthorpe if (attr_mask & IB_QP_AV) 17048d9ec9adSJason Gunthorpe rdma_unfill_sgid_attr(&attr->ah_attr, old_sgid_attr_av); 1705498ca3c8SNoa Osherovich return ret; 1706a512c2fbSParav Pandit } 1707b96ac05aSParav Pandit 1708b96ac05aSParav Pandit /** 1709b96ac05aSParav Pandit * ib_modify_qp_with_udata - Modifies the attributes for the specified QP. 1710b96ac05aSParav Pandit * @ib_qp: The QP to modify. 1711b96ac05aSParav Pandit * @attr: On input, specifies the QP attributes to modify. On output, 1712b96ac05aSParav Pandit * the current values of selected QP attributes are returned. 1713b96ac05aSParav Pandit * @attr_mask: A bit-mask used to specify which attributes of the QP 1714b96ac05aSParav Pandit * are being modified. 1715b96ac05aSParav Pandit * @udata: pointer to user's input output buffer information 1716b96ac05aSParav Pandit * are being modified. 1717b96ac05aSParav Pandit * It returns 0 on success and returns appropriate error code on error. 1718b96ac05aSParav Pandit */ 1719b96ac05aSParav Pandit int ib_modify_qp_with_udata(struct ib_qp *ib_qp, struct ib_qp_attr *attr, 1720b96ac05aSParav Pandit int attr_mask, struct ib_udata *udata) 1721b96ac05aSParav Pandit { 17228d9ec9adSJason Gunthorpe return _ib_modify_qp(ib_qp->real_qp, attr, attr_mask, udata); 1723b96ac05aSParav Pandit } 1724a512c2fbSParav Pandit EXPORT_SYMBOL(ib_modify_qp_with_udata); 1725a512c2fbSParav Pandit 1726d4186194SYuval Shaia int ib_get_eth_speed(struct ib_device *dev, u8 port_num, u8 *speed, u8 *width) 1727d4186194SYuval Shaia { 1728d4186194SYuval Shaia int rc; 1729d4186194SYuval Shaia u32 netdev_speed; 1730d4186194SYuval Shaia struct net_device *netdev; 1731d4186194SYuval Shaia struct ethtool_link_ksettings lksettings; 1732d4186194SYuval Shaia 1733d4186194SYuval Shaia if (rdma_port_get_link_layer(dev, port_num) != IB_LINK_LAYER_ETHERNET) 1734d4186194SYuval Shaia return -EINVAL; 1735d4186194SYuval Shaia 1736c2261dd7SJason Gunthorpe netdev = ib_device_get_netdev(dev, port_num); 1737d4186194SYuval Shaia if (!netdev) 1738d4186194SYuval Shaia return -ENODEV; 1739d4186194SYuval Shaia 1740d4186194SYuval Shaia rtnl_lock(); 1741d4186194SYuval Shaia rc = __ethtool_get_link_ksettings(netdev, &lksettings); 1742d4186194SYuval Shaia rtnl_unlock(); 1743d4186194SYuval Shaia 1744d4186194SYuval Shaia dev_put(netdev); 1745d4186194SYuval Shaia 1746d4186194SYuval Shaia if (!rc) { 1747d4186194SYuval Shaia netdev_speed = lksettings.base.speed; 1748d4186194SYuval Shaia } else { 1749d4186194SYuval Shaia netdev_speed = SPEED_1000; 1750d4186194SYuval Shaia pr_warn("%s speed is unknown, defaulting to %d\n", netdev->name, 1751d4186194SYuval Shaia netdev_speed); 1752d4186194SYuval Shaia } 1753d4186194SYuval Shaia 1754d4186194SYuval Shaia if (netdev_speed <= SPEED_1000) { 1755d4186194SYuval Shaia *width = IB_WIDTH_1X; 1756d4186194SYuval Shaia *speed = IB_SPEED_SDR; 1757d4186194SYuval Shaia } else if (netdev_speed <= SPEED_10000) { 1758d4186194SYuval Shaia *width = IB_WIDTH_1X; 1759d4186194SYuval Shaia *speed = IB_SPEED_FDR10; 1760d4186194SYuval Shaia } else if (netdev_speed <= SPEED_20000) { 1761d4186194SYuval Shaia *width = IB_WIDTH_4X; 1762d4186194SYuval Shaia *speed = IB_SPEED_DDR; 1763d4186194SYuval Shaia } else if (netdev_speed <= SPEED_25000) { 1764d4186194SYuval Shaia *width = IB_WIDTH_1X; 1765d4186194SYuval Shaia *speed = IB_SPEED_EDR; 1766d4186194SYuval Shaia } else if (netdev_speed <= SPEED_40000) { 1767d4186194SYuval Shaia *width = IB_WIDTH_4X; 1768d4186194SYuval Shaia *speed = IB_SPEED_FDR10; 1769d4186194SYuval Shaia } else { 1770d4186194SYuval Shaia *width = IB_WIDTH_4X; 1771d4186194SYuval Shaia *speed = IB_SPEED_EDR; 1772d4186194SYuval Shaia } 1773d4186194SYuval Shaia 1774d4186194SYuval Shaia return 0; 1775d4186194SYuval Shaia } 1776d4186194SYuval Shaia EXPORT_SYMBOL(ib_get_eth_speed); 1777d4186194SYuval Shaia 17781da177e4SLinus Torvalds int ib_modify_qp(struct ib_qp *qp, 17791da177e4SLinus Torvalds struct ib_qp_attr *qp_attr, 17801da177e4SLinus Torvalds int qp_attr_mask) 17811da177e4SLinus Torvalds { 1782b96ac05aSParav Pandit return _ib_modify_qp(qp->real_qp, qp_attr, qp_attr_mask, NULL); 17831da177e4SLinus Torvalds } 17841da177e4SLinus Torvalds EXPORT_SYMBOL(ib_modify_qp); 17851da177e4SLinus Torvalds 17861da177e4SLinus Torvalds int ib_query_qp(struct ib_qp *qp, 17871da177e4SLinus Torvalds struct ib_qp_attr *qp_attr, 17881da177e4SLinus Torvalds int qp_attr_mask, 17891da177e4SLinus Torvalds struct ib_qp_init_attr *qp_init_attr) 17901da177e4SLinus Torvalds { 17918d9ec9adSJason Gunthorpe qp_attr->ah_attr.grh.sgid_attr = NULL; 17928d9ec9adSJason Gunthorpe qp_attr->alt_ah_attr.grh.sgid_attr = NULL; 17938d9ec9adSJason Gunthorpe 17943023a1e9SKamal Heib return qp->device->ops.query_qp ? 17953023a1e9SKamal Heib qp->device->ops.query_qp(qp->real_qp, qp_attr, qp_attr_mask, 17963023a1e9SKamal Heib qp_init_attr) : -EOPNOTSUPP; 17971da177e4SLinus Torvalds } 17981da177e4SLinus Torvalds EXPORT_SYMBOL(ib_query_qp); 17991da177e4SLinus Torvalds 18000e0ec7e0SSean Hefty int ib_close_qp(struct ib_qp *qp) 18010e0ec7e0SSean Hefty { 18020e0ec7e0SSean Hefty struct ib_qp *real_qp; 18030e0ec7e0SSean Hefty unsigned long flags; 18040e0ec7e0SSean Hefty 18050e0ec7e0SSean Hefty real_qp = qp->real_qp; 18060e0ec7e0SSean Hefty if (real_qp == qp) 18070e0ec7e0SSean Hefty return -EINVAL; 18080e0ec7e0SSean Hefty 18090e0ec7e0SSean Hefty spin_lock_irqsave(&real_qp->device->event_handler_lock, flags); 18100e0ec7e0SSean Hefty list_del(&qp->open_list); 18110e0ec7e0SSean Hefty spin_unlock_irqrestore(&real_qp->device->event_handler_lock, flags); 18120e0ec7e0SSean Hefty 18130e0ec7e0SSean Hefty atomic_dec(&real_qp->usecnt); 18144a50881bSMoni Shoua if (qp->qp_sec) 1815d291f1a6SDaniel Jurgens ib_close_shared_qp_security(qp->qp_sec); 18160e0ec7e0SSean Hefty kfree(qp); 18170e0ec7e0SSean Hefty 18180e0ec7e0SSean Hefty return 0; 18190e0ec7e0SSean Hefty } 18200e0ec7e0SSean Hefty EXPORT_SYMBOL(ib_close_qp); 18210e0ec7e0SSean Hefty 18220e0ec7e0SSean Hefty static int __ib_destroy_shared_qp(struct ib_qp *qp) 18230e0ec7e0SSean Hefty { 18240e0ec7e0SSean Hefty struct ib_xrcd *xrcd; 18250e0ec7e0SSean Hefty struct ib_qp *real_qp; 18260e0ec7e0SSean Hefty int ret; 18270e0ec7e0SSean Hefty 18280e0ec7e0SSean Hefty real_qp = qp->real_qp; 18290e0ec7e0SSean Hefty xrcd = real_qp->xrcd; 18300e0ec7e0SSean Hefty 18310e0ec7e0SSean Hefty mutex_lock(&xrcd->tgt_qp_mutex); 18320e0ec7e0SSean Hefty ib_close_qp(qp); 18330e0ec7e0SSean Hefty if (atomic_read(&real_qp->usecnt) == 0) 18340e0ec7e0SSean Hefty list_del(&real_qp->xrcd_list); 18350e0ec7e0SSean Hefty else 18360e0ec7e0SSean Hefty real_qp = NULL; 18370e0ec7e0SSean Hefty mutex_unlock(&xrcd->tgt_qp_mutex); 18380e0ec7e0SSean Hefty 18390e0ec7e0SSean Hefty if (real_qp) { 18400e0ec7e0SSean Hefty ret = ib_destroy_qp(real_qp); 18410e0ec7e0SSean Hefty if (!ret) 18420e0ec7e0SSean Hefty atomic_dec(&xrcd->usecnt); 18430e0ec7e0SSean Hefty else 18440e0ec7e0SSean Hefty __ib_insert_xrcd_qp(xrcd, real_qp); 18450e0ec7e0SSean Hefty } 18460e0ec7e0SSean Hefty 18470e0ec7e0SSean Hefty return 0; 18480e0ec7e0SSean Hefty } 18490e0ec7e0SSean Hefty 1850c4367a26SShamir Rabinovitch int ib_destroy_qp_user(struct ib_qp *qp, struct ib_udata *udata) 18511da177e4SLinus Torvalds { 18521a1f460fSJason Gunthorpe const struct ib_gid_attr *alt_path_sgid_attr = qp->alt_path_sgid_attr; 18531a1f460fSJason Gunthorpe const struct ib_gid_attr *av_sgid_attr = qp->av_sgid_attr; 18541da177e4SLinus Torvalds struct ib_pd *pd; 18551da177e4SLinus Torvalds struct ib_cq *scq, *rcq; 18561da177e4SLinus Torvalds struct ib_srq *srq; 1857a9017e23SYishai Hadas struct ib_rwq_ind_table *ind_tbl; 1858d291f1a6SDaniel Jurgens struct ib_qp_security *sec; 18591da177e4SLinus Torvalds int ret; 18601da177e4SLinus Torvalds 1861fffb0383SChristoph Hellwig WARN_ON_ONCE(qp->mrs_used > 0); 1862fffb0383SChristoph Hellwig 18630e0ec7e0SSean Hefty if (atomic_read(&qp->usecnt)) 18640e0ec7e0SSean Hefty return -EBUSY; 18650e0ec7e0SSean Hefty 18660e0ec7e0SSean Hefty if (qp->real_qp != qp) 18670e0ec7e0SSean Hefty return __ib_destroy_shared_qp(qp); 18680e0ec7e0SSean Hefty 18691da177e4SLinus Torvalds pd = qp->pd; 18701da177e4SLinus Torvalds scq = qp->send_cq; 18711da177e4SLinus Torvalds rcq = qp->recv_cq; 18721da177e4SLinus Torvalds srq = qp->srq; 1873a9017e23SYishai Hadas ind_tbl = qp->rwq_ind_tbl; 1874d291f1a6SDaniel Jurgens sec = qp->qp_sec; 1875d291f1a6SDaniel Jurgens if (sec) 1876d291f1a6SDaniel Jurgens ib_destroy_qp_security_begin(sec); 18771da177e4SLinus Torvalds 1878a060b562SChristoph Hellwig if (!qp->uobject) 1879a060b562SChristoph Hellwig rdma_rw_cleanup_mrs(qp); 1880a060b562SChristoph Hellwig 188178a0cd64SLeon Romanovsky rdma_restrack_del(&qp->res); 1882c4367a26SShamir Rabinovitch ret = qp->device->ops.destroy_qp(qp, udata); 18831da177e4SLinus Torvalds if (!ret) { 18841a1f460fSJason Gunthorpe if (alt_path_sgid_attr) 18851a1f460fSJason Gunthorpe rdma_put_gid_attr(alt_path_sgid_attr); 18861a1f460fSJason Gunthorpe if (av_sgid_attr) 18871a1f460fSJason Gunthorpe rdma_put_gid_attr(av_sgid_attr); 1888b42b63cfSSean Hefty if (pd) 18891da177e4SLinus Torvalds atomic_dec(&pd->usecnt); 1890b42b63cfSSean Hefty if (scq) 18911da177e4SLinus Torvalds atomic_dec(&scq->usecnt); 1892b42b63cfSSean Hefty if (rcq) 18931da177e4SLinus Torvalds atomic_dec(&rcq->usecnt); 18941da177e4SLinus Torvalds if (srq) 18951da177e4SLinus Torvalds atomic_dec(&srq->usecnt); 1896a9017e23SYishai Hadas if (ind_tbl) 1897a9017e23SYishai Hadas atomic_dec(&ind_tbl->usecnt); 1898d291f1a6SDaniel Jurgens if (sec) 1899d291f1a6SDaniel Jurgens ib_destroy_qp_security_end(sec); 1900d291f1a6SDaniel Jurgens } else { 1901d291f1a6SDaniel Jurgens if (sec) 1902d291f1a6SDaniel Jurgens ib_destroy_qp_security_abort(sec); 19031da177e4SLinus Torvalds } 19041da177e4SLinus Torvalds 19051da177e4SLinus Torvalds return ret; 19061da177e4SLinus Torvalds } 1907c4367a26SShamir Rabinovitch EXPORT_SYMBOL(ib_destroy_qp_user); 19081da177e4SLinus Torvalds 19091da177e4SLinus Torvalds /* Completion queues */ 19101da177e4SLinus Torvalds 19117350cdd0SBharat Potnuri struct ib_cq *__ib_create_cq(struct ib_device *device, 19121da177e4SLinus Torvalds ib_comp_handler comp_handler, 19131da177e4SLinus Torvalds void (*event_handler)(struct ib_event *, void *), 19148e37210bSMatan Barak void *cq_context, 19157350cdd0SBharat Potnuri const struct ib_cq_init_attr *cq_attr, 19167350cdd0SBharat Potnuri const char *caller) 19171da177e4SLinus Torvalds { 19181da177e4SLinus Torvalds struct ib_cq *cq; 1919e39afe3dSLeon Romanovsky int ret; 19201da177e4SLinus Torvalds 1921e39afe3dSLeon Romanovsky cq = rdma_zalloc_drv_obj(device, ib_cq); 1922e39afe3dSLeon Romanovsky if (!cq) 1923e39afe3dSLeon Romanovsky return ERR_PTR(-ENOMEM); 19241da177e4SLinus Torvalds 19251da177e4SLinus Torvalds cq->device = device; 1926b5e81bf5SRoland Dreier cq->uobject = NULL; 19271da177e4SLinus Torvalds cq->comp_handler = comp_handler; 19281da177e4SLinus Torvalds cq->event_handler = event_handler; 19291da177e4SLinus Torvalds cq->cq_context = cq_context; 19301da177e4SLinus Torvalds atomic_set(&cq->usecnt, 0); 193108f294a1SLeon Romanovsky cq->res.type = RDMA_RESTRACK_CQ; 19322165fc26SLeon Romanovsky rdma_restrack_set_task(&cq->res, caller); 1933e39afe3dSLeon Romanovsky 1934e39afe3dSLeon Romanovsky ret = device->ops.create_cq(cq, cq_attr, NULL); 1935e39afe3dSLeon Romanovsky if (ret) { 1936e39afe3dSLeon Romanovsky kfree(cq); 1937e39afe3dSLeon Romanovsky return ERR_PTR(ret); 19381da177e4SLinus Torvalds } 19391da177e4SLinus Torvalds 1940e39afe3dSLeon Romanovsky rdma_restrack_kadd(&cq->res); 19411da177e4SLinus Torvalds return cq; 19421da177e4SLinus Torvalds } 19437350cdd0SBharat Potnuri EXPORT_SYMBOL(__ib_create_cq); 19441da177e4SLinus Torvalds 19454190b4e9SLeon Romanovsky int rdma_set_cq_moderation(struct ib_cq *cq, u16 cq_count, u16 cq_period) 19462dd57162SEli Cohen { 19473023a1e9SKamal Heib return cq->device->ops.modify_cq ? 19483023a1e9SKamal Heib cq->device->ops.modify_cq(cq, cq_count, 19493023a1e9SKamal Heib cq_period) : -EOPNOTSUPP; 19502dd57162SEli Cohen } 19514190b4e9SLeon Romanovsky EXPORT_SYMBOL(rdma_set_cq_moderation); 19522dd57162SEli Cohen 1953c4367a26SShamir Rabinovitch int ib_destroy_cq_user(struct ib_cq *cq, struct ib_udata *udata) 19541da177e4SLinus Torvalds { 19551da177e4SLinus Torvalds if (atomic_read(&cq->usecnt)) 19561da177e4SLinus Torvalds return -EBUSY; 19571da177e4SLinus Torvalds 195808f294a1SLeon Romanovsky rdma_restrack_del(&cq->res); 1959a52c8e24SLeon Romanovsky cq->device->ops.destroy_cq(cq, udata); 1960e39afe3dSLeon Romanovsky kfree(cq); 1961a52c8e24SLeon Romanovsky return 0; 19621da177e4SLinus Torvalds } 1963c4367a26SShamir Rabinovitch EXPORT_SYMBOL(ib_destroy_cq_user); 19641da177e4SLinus Torvalds 1965a74cd4afSRoland Dreier int ib_resize_cq(struct ib_cq *cq, int cqe) 19661da177e4SLinus Torvalds { 19673023a1e9SKamal Heib return cq->device->ops.resize_cq ? 19683023a1e9SKamal Heib cq->device->ops.resize_cq(cq, cqe, NULL) : -EOPNOTSUPP; 19691da177e4SLinus Torvalds } 19701da177e4SLinus Torvalds EXPORT_SYMBOL(ib_resize_cq); 19711da177e4SLinus Torvalds 19721da177e4SLinus Torvalds /* Memory regions */ 19731da177e4SLinus Torvalds 1974c4367a26SShamir Rabinovitch int ib_dereg_mr_user(struct ib_mr *mr, struct ib_udata *udata) 19751da177e4SLinus Torvalds { 1976ab67ed8dSChristoph Hellwig struct ib_pd *pd = mr->pd; 1977be934ccaSAriel Levkovich struct ib_dm *dm = mr->dm; 19781da177e4SLinus Torvalds int ret; 19791da177e4SLinus Torvalds 1980fccec5b8SSteve Wise rdma_restrack_del(&mr->res); 1981c4367a26SShamir Rabinovitch ret = mr->device->ops.dereg_mr(mr, udata); 1982be934ccaSAriel Levkovich if (!ret) { 19831da177e4SLinus Torvalds atomic_dec(&pd->usecnt); 1984be934ccaSAriel Levkovich if (dm) 1985be934ccaSAriel Levkovich atomic_dec(&dm->usecnt); 1986be934ccaSAriel Levkovich } 19871da177e4SLinus Torvalds 19881da177e4SLinus Torvalds return ret; 19891da177e4SLinus Torvalds } 1990c4367a26SShamir Rabinovitch EXPORT_SYMBOL(ib_dereg_mr_user); 19911da177e4SLinus Torvalds 19929bee178bSSagi Grimberg /** 199391f57129SIsrael Rukshin * ib_alloc_mr_user() - Allocates a memory region 19949bee178bSSagi Grimberg * @pd: protection domain associated with the region 19959bee178bSSagi Grimberg * @mr_type: memory region type 19969bee178bSSagi Grimberg * @max_num_sg: maximum sg entries available for registration. 1997c4367a26SShamir Rabinovitch * @udata: user data or null for kernel objects 19989bee178bSSagi Grimberg * 19999bee178bSSagi Grimberg * Notes: 20009bee178bSSagi Grimberg * Memory registeration page/sg lists must not exceed max_num_sg. 20019bee178bSSagi Grimberg * For mr_type IB_MR_TYPE_MEM_REG, the total length cannot exceed 20029bee178bSSagi Grimberg * max_num_sg * used_page_size. 20039bee178bSSagi Grimberg * 20049bee178bSSagi Grimberg */ 2005c4367a26SShamir Rabinovitch struct ib_mr *ib_alloc_mr_user(struct ib_pd *pd, enum ib_mr_type mr_type, 2006c4367a26SShamir Rabinovitch u32 max_num_sg, struct ib_udata *udata) 200717cd3a2dSSagi Grimberg { 200817cd3a2dSSagi Grimberg struct ib_mr *mr; 200917cd3a2dSSagi Grimberg 20103023a1e9SKamal Heib if (!pd->device->ops.alloc_mr) 201187915bf8SLeon Romanovsky return ERR_PTR(-EOPNOTSUPP); 201217cd3a2dSSagi Grimberg 2013c4367a26SShamir Rabinovitch mr = pd->device->ops.alloc_mr(pd, mr_type, max_num_sg, udata); 201417cd3a2dSSagi Grimberg if (!IS_ERR(mr)) { 201517cd3a2dSSagi Grimberg mr->device = pd->device; 201617cd3a2dSSagi Grimberg mr->pd = pd; 201754e7e48bSAriel Levkovich mr->dm = NULL; 201817cd3a2dSSagi Grimberg mr->uobject = NULL; 201917cd3a2dSSagi Grimberg atomic_inc(&pd->usecnt); 2020d4a85c30SSteve Wise mr->need_inval = false; 2021fccec5b8SSteve Wise mr->res.type = RDMA_RESTRACK_MR; 2022af8d7037SShamir Rabinovitch rdma_restrack_kadd(&mr->res); 202317cd3a2dSSagi Grimberg } 202417cd3a2dSSagi Grimberg 202517cd3a2dSSagi Grimberg return mr; 202617cd3a2dSSagi Grimberg } 2027c4367a26SShamir Rabinovitch EXPORT_SYMBOL(ib_alloc_mr_user); 202800f7ec36SSteve Wise 20291da177e4SLinus Torvalds /* "Fast" memory regions */ 20301da177e4SLinus Torvalds 20311da177e4SLinus Torvalds struct ib_fmr *ib_alloc_fmr(struct ib_pd *pd, 20321da177e4SLinus Torvalds int mr_access_flags, 20331da177e4SLinus Torvalds struct ib_fmr_attr *fmr_attr) 20341da177e4SLinus Torvalds { 20351da177e4SLinus Torvalds struct ib_fmr *fmr; 20361da177e4SLinus Torvalds 20373023a1e9SKamal Heib if (!pd->device->ops.alloc_fmr) 203887915bf8SLeon Romanovsky return ERR_PTR(-EOPNOTSUPP); 20391da177e4SLinus Torvalds 20403023a1e9SKamal Heib fmr = pd->device->ops.alloc_fmr(pd, mr_access_flags, fmr_attr); 20411da177e4SLinus Torvalds if (!IS_ERR(fmr)) { 20421da177e4SLinus Torvalds fmr->device = pd->device; 20431da177e4SLinus Torvalds fmr->pd = pd; 20441da177e4SLinus Torvalds atomic_inc(&pd->usecnt); 20451da177e4SLinus Torvalds } 20461da177e4SLinus Torvalds 20471da177e4SLinus Torvalds return fmr; 20481da177e4SLinus Torvalds } 20491da177e4SLinus Torvalds EXPORT_SYMBOL(ib_alloc_fmr); 20501da177e4SLinus Torvalds 20511da177e4SLinus Torvalds int ib_unmap_fmr(struct list_head *fmr_list) 20521da177e4SLinus Torvalds { 20531da177e4SLinus Torvalds struct ib_fmr *fmr; 20541da177e4SLinus Torvalds 20551da177e4SLinus Torvalds if (list_empty(fmr_list)) 20561da177e4SLinus Torvalds return 0; 20571da177e4SLinus Torvalds 20581da177e4SLinus Torvalds fmr = list_entry(fmr_list->next, struct ib_fmr, list); 20593023a1e9SKamal Heib return fmr->device->ops.unmap_fmr(fmr_list); 20601da177e4SLinus Torvalds } 20611da177e4SLinus Torvalds EXPORT_SYMBOL(ib_unmap_fmr); 20621da177e4SLinus Torvalds 20631da177e4SLinus Torvalds int ib_dealloc_fmr(struct ib_fmr *fmr) 20641da177e4SLinus Torvalds { 20651da177e4SLinus Torvalds struct ib_pd *pd; 20661da177e4SLinus Torvalds int ret; 20671da177e4SLinus Torvalds 20681da177e4SLinus Torvalds pd = fmr->pd; 20693023a1e9SKamal Heib ret = fmr->device->ops.dealloc_fmr(fmr); 20701da177e4SLinus Torvalds if (!ret) 20711da177e4SLinus Torvalds atomic_dec(&pd->usecnt); 20721da177e4SLinus Torvalds 20731da177e4SLinus Torvalds return ret; 20741da177e4SLinus Torvalds } 20751da177e4SLinus Torvalds EXPORT_SYMBOL(ib_dealloc_fmr); 20761da177e4SLinus Torvalds 20771da177e4SLinus Torvalds /* Multicast groups */ 20781da177e4SLinus Torvalds 207952363335SNoa Osherovich static bool is_valid_mcast_lid(struct ib_qp *qp, u16 lid) 208052363335SNoa Osherovich { 208152363335SNoa Osherovich struct ib_qp_init_attr init_attr = {}; 208252363335SNoa Osherovich struct ib_qp_attr attr = {}; 208352363335SNoa Osherovich int num_eth_ports = 0; 208452363335SNoa Osherovich int port; 208552363335SNoa Osherovich 208652363335SNoa Osherovich /* If QP state >= init, it is assigned to a port and we can check this 208752363335SNoa Osherovich * port only. 208852363335SNoa Osherovich */ 208952363335SNoa Osherovich if (!ib_query_qp(qp, &attr, IB_QP_STATE | IB_QP_PORT, &init_attr)) { 209052363335SNoa Osherovich if (attr.qp_state >= IB_QPS_INIT) { 2091e6f9bc34SAlex Estrin if (rdma_port_get_link_layer(qp->device, attr.port_num) != 209252363335SNoa Osherovich IB_LINK_LAYER_INFINIBAND) 209352363335SNoa Osherovich return true; 209452363335SNoa Osherovich goto lid_check; 209552363335SNoa Osherovich } 209652363335SNoa Osherovich } 209752363335SNoa Osherovich 209852363335SNoa Osherovich /* Can't get a quick answer, iterate over all ports */ 209952363335SNoa Osherovich for (port = 0; port < qp->device->phys_port_cnt; port++) 2100e6f9bc34SAlex Estrin if (rdma_port_get_link_layer(qp->device, port) != 210152363335SNoa Osherovich IB_LINK_LAYER_INFINIBAND) 210252363335SNoa Osherovich num_eth_ports++; 210352363335SNoa Osherovich 210452363335SNoa Osherovich /* If we have at lease one Ethernet port, RoCE annex declares that 210552363335SNoa Osherovich * multicast LID should be ignored. We can't tell at this step if the 210652363335SNoa Osherovich * QP belongs to an IB or Ethernet port. 210752363335SNoa Osherovich */ 210852363335SNoa Osherovich if (num_eth_ports) 210952363335SNoa Osherovich return true; 211052363335SNoa Osherovich 211152363335SNoa Osherovich /* If all the ports are IB, we can check according to IB spec. */ 211252363335SNoa Osherovich lid_check: 211352363335SNoa Osherovich return !(lid < be16_to_cpu(IB_MULTICAST_LID_BASE) || 211452363335SNoa Osherovich lid == be16_to_cpu(IB_LID_PERMISSIVE)); 211552363335SNoa Osherovich } 211652363335SNoa Osherovich 21171da177e4SLinus Torvalds int ib_attach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid) 21181da177e4SLinus Torvalds { 2119c3bccbfbSOr Gerlitz int ret; 2120c3bccbfbSOr Gerlitz 21213023a1e9SKamal Heib if (!qp->device->ops.attach_mcast) 212287915bf8SLeon Romanovsky return -EOPNOTSUPP; 2123be1d325aSNoa Osherovich 2124be1d325aSNoa Osherovich if (!rdma_is_multicast_addr((struct in6_addr *)gid->raw) || 2125be1d325aSNoa Osherovich qp->qp_type != IB_QPT_UD || !is_valid_mcast_lid(qp, lid)) 21260c33aeedSJack Morgenstein return -EINVAL; 21270c33aeedSJack Morgenstein 21283023a1e9SKamal Heib ret = qp->device->ops.attach_mcast(qp, gid, lid); 2129c3bccbfbSOr Gerlitz if (!ret) 2130c3bccbfbSOr Gerlitz atomic_inc(&qp->usecnt); 2131c3bccbfbSOr Gerlitz return ret; 21321da177e4SLinus Torvalds } 21331da177e4SLinus Torvalds EXPORT_SYMBOL(ib_attach_mcast); 21341da177e4SLinus Torvalds 21351da177e4SLinus Torvalds int ib_detach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid) 21361da177e4SLinus Torvalds { 2137c3bccbfbSOr Gerlitz int ret; 2138c3bccbfbSOr Gerlitz 21393023a1e9SKamal Heib if (!qp->device->ops.detach_mcast) 214087915bf8SLeon Romanovsky return -EOPNOTSUPP; 2141be1d325aSNoa Osherovich 2142be1d325aSNoa Osherovich if (!rdma_is_multicast_addr((struct in6_addr *)gid->raw) || 2143be1d325aSNoa Osherovich qp->qp_type != IB_QPT_UD || !is_valid_mcast_lid(qp, lid)) 21440c33aeedSJack Morgenstein return -EINVAL; 21450c33aeedSJack Morgenstein 21463023a1e9SKamal Heib ret = qp->device->ops.detach_mcast(qp, gid, lid); 2147c3bccbfbSOr Gerlitz if (!ret) 2148c3bccbfbSOr Gerlitz atomic_dec(&qp->usecnt); 2149c3bccbfbSOr Gerlitz return ret; 21501da177e4SLinus Torvalds } 21511da177e4SLinus Torvalds EXPORT_SYMBOL(ib_detach_mcast); 215259991f94SSean Hefty 2153f66c8ba4SLeon Romanovsky struct ib_xrcd *__ib_alloc_xrcd(struct ib_device *device, const char *caller) 215459991f94SSean Hefty { 215559991f94SSean Hefty struct ib_xrcd *xrcd; 215659991f94SSean Hefty 21573023a1e9SKamal Heib if (!device->ops.alloc_xrcd) 215887915bf8SLeon Romanovsky return ERR_PTR(-EOPNOTSUPP); 215959991f94SSean Hefty 2160ff23dfa1SShamir Rabinovitch xrcd = device->ops.alloc_xrcd(device, NULL); 216159991f94SSean Hefty if (!IS_ERR(xrcd)) { 216259991f94SSean Hefty xrcd->device = device; 216353d0bd1eSSean Hefty xrcd->inode = NULL; 216459991f94SSean Hefty atomic_set(&xrcd->usecnt, 0); 2165d3d72d90SSean Hefty mutex_init(&xrcd->tgt_qp_mutex); 2166d3d72d90SSean Hefty INIT_LIST_HEAD(&xrcd->tgt_qp_list); 216759991f94SSean Hefty } 216859991f94SSean Hefty 216959991f94SSean Hefty return xrcd; 217059991f94SSean Hefty } 2171f66c8ba4SLeon Romanovsky EXPORT_SYMBOL(__ib_alloc_xrcd); 217259991f94SSean Hefty 2173c4367a26SShamir Rabinovitch int ib_dealloc_xrcd(struct ib_xrcd *xrcd, struct ib_udata *udata) 217459991f94SSean Hefty { 2175d3d72d90SSean Hefty struct ib_qp *qp; 2176d3d72d90SSean Hefty int ret; 2177d3d72d90SSean Hefty 217859991f94SSean Hefty if (atomic_read(&xrcd->usecnt)) 217959991f94SSean Hefty return -EBUSY; 218059991f94SSean Hefty 2181d3d72d90SSean Hefty while (!list_empty(&xrcd->tgt_qp_list)) { 2182d3d72d90SSean Hefty qp = list_entry(xrcd->tgt_qp_list.next, struct ib_qp, xrcd_list); 2183d3d72d90SSean Hefty ret = ib_destroy_qp(qp); 2184d3d72d90SSean Hefty if (ret) 2185d3d72d90SSean Hefty return ret; 2186d3d72d90SSean Hefty } 2187d3d72d90SSean Hefty 2188c4367a26SShamir Rabinovitch return xrcd->device->ops.dealloc_xrcd(xrcd, udata); 218959991f94SSean Hefty } 219059991f94SSean Hefty EXPORT_SYMBOL(ib_dealloc_xrcd); 2191319a441dSHadar Hen Zion 21925fd251c8SYishai Hadas /** 21935fd251c8SYishai Hadas * ib_create_wq - Creates a WQ associated with the specified protection 21945fd251c8SYishai Hadas * domain. 21955fd251c8SYishai Hadas * @pd: The protection domain associated with the WQ. 21961f58621eSRandy Dunlap * @wq_attr: A list of initial attributes required to create the 21975fd251c8SYishai Hadas * WQ. If WQ creation succeeds, then the attributes are updated to 21985fd251c8SYishai Hadas * the actual capabilities of the created WQ. 21995fd251c8SYishai Hadas * 22001f58621eSRandy Dunlap * wq_attr->max_wr and wq_attr->max_sge determine 22015fd251c8SYishai Hadas * the requested size of the WQ, and set to the actual values allocated 22025fd251c8SYishai Hadas * on return. 22035fd251c8SYishai Hadas * If ib_create_wq() succeeds, then max_wr and max_sge will always be 22045fd251c8SYishai Hadas * at least as large as the requested values. 22055fd251c8SYishai Hadas */ 22065fd251c8SYishai Hadas struct ib_wq *ib_create_wq(struct ib_pd *pd, 22075fd251c8SYishai Hadas struct ib_wq_init_attr *wq_attr) 22085fd251c8SYishai Hadas { 22095fd251c8SYishai Hadas struct ib_wq *wq; 22105fd251c8SYishai Hadas 22113023a1e9SKamal Heib if (!pd->device->ops.create_wq) 221287915bf8SLeon Romanovsky return ERR_PTR(-EOPNOTSUPP); 22135fd251c8SYishai Hadas 22143023a1e9SKamal Heib wq = pd->device->ops.create_wq(pd, wq_attr, NULL); 22155fd251c8SYishai Hadas if (!IS_ERR(wq)) { 22165fd251c8SYishai Hadas wq->event_handler = wq_attr->event_handler; 22175fd251c8SYishai Hadas wq->wq_context = wq_attr->wq_context; 22185fd251c8SYishai Hadas wq->wq_type = wq_attr->wq_type; 22195fd251c8SYishai Hadas wq->cq = wq_attr->cq; 22205fd251c8SYishai Hadas wq->device = pd->device; 22215fd251c8SYishai Hadas wq->pd = pd; 22225fd251c8SYishai Hadas wq->uobject = NULL; 22235fd251c8SYishai Hadas atomic_inc(&pd->usecnt); 22245fd251c8SYishai Hadas atomic_inc(&wq_attr->cq->usecnt); 22255fd251c8SYishai Hadas atomic_set(&wq->usecnt, 0); 22265fd251c8SYishai Hadas } 22275fd251c8SYishai Hadas return wq; 22285fd251c8SYishai Hadas } 22295fd251c8SYishai Hadas EXPORT_SYMBOL(ib_create_wq); 22305fd251c8SYishai Hadas 22315fd251c8SYishai Hadas /** 2232c4367a26SShamir Rabinovitch * ib_destroy_wq - Destroys the specified user WQ. 22335fd251c8SYishai Hadas * @wq: The WQ to destroy. 2234c4367a26SShamir Rabinovitch * @udata: Valid user data 22355fd251c8SYishai Hadas */ 2236c4367a26SShamir Rabinovitch int ib_destroy_wq(struct ib_wq *wq, struct ib_udata *udata) 22375fd251c8SYishai Hadas { 22385fd251c8SYishai Hadas struct ib_cq *cq = wq->cq; 22395fd251c8SYishai Hadas struct ib_pd *pd = wq->pd; 22405fd251c8SYishai Hadas 22415fd251c8SYishai Hadas if (atomic_read(&wq->usecnt)) 22425fd251c8SYishai Hadas return -EBUSY; 22435fd251c8SYishai Hadas 2244a49b1dc7SLeon Romanovsky wq->device->ops.destroy_wq(wq, udata); 22455fd251c8SYishai Hadas atomic_dec(&pd->usecnt); 22465fd251c8SYishai Hadas atomic_dec(&cq->usecnt); 2247a49b1dc7SLeon Romanovsky 2248a49b1dc7SLeon Romanovsky return 0; 22495fd251c8SYishai Hadas } 22505fd251c8SYishai Hadas EXPORT_SYMBOL(ib_destroy_wq); 22515fd251c8SYishai Hadas 22525fd251c8SYishai Hadas /** 22535fd251c8SYishai Hadas * ib_modify_wq - Modifies the specified WQ. 22545fd251c8SYishai Hadas * @wq: The WQ to modify. 22555fd251c8SYishai Hadas * @wq_attr: On input, specifies the WQ attributes to modify. 22565fd251c8SYishai Hadas * @wq_attr_mask: A bit-mask used to specify which attributes of the WQ 22575fd251c8SYishai Hadas * are being modified. 22585fd251c8SYishai Hadas * On output, the current values of selected WQ attributes are returned. 22595fd251c8SYishai Hadas */ 22605fd251c8SYishai Hadas int ib_modify_wq(struct ib_wq *wq, struct ib_wq_attr *wq_attr, 22615fd251c8SYishai Hadas u32 wq_attr_mask) 22625fd251c8SYishai Hadas { 22635fd251c8SYishai Hadas int err; 22645fd251c8SYishai Hadas 22653023a1e9SKamal Heib if (!wq->device->ops.modify_wq) 226687915bf8SLeon Romanovsky return -EOPNOTSUPP; 22675fd251c8SYishai Hadas 22683023a1e9SKamal Heib err = wq->device->ops.modify_wq(wq, wq_attr, wq_attr_mask, NULL); 22695fd251c8SYishai Hadas return err; 22705fd251c8SYishai Hadas } 22715fd251c8SYishai Hadas EXPORT_SYMBOL(ib_modify_wq); 22725fd251c8SYishai Hadas 22736d39786bSYishai Hadas /* 22746d39786bSYishai Hadas * ib_create_rwq_ind_table - Creates a RQ Indirection Table. 22756d39786bSYishai Hadas * @device: The device on which to create the rwq indirection table. 22766d39786bSYishai Hadas * @ib_rwq_ind_table_init_attr: A list of initial attributes required to 22776d39786bSYishai Hadas * create the Indirection Table. 22786d39786bSYishai Hadas * 22796d39786bSYishai Hadas * Note: The life time of ib_rwq_ind_table_init_attr->ind_tbl is not less 22806d39786bSYishai Hadas * than the created ib_rwq_ind_table object and the caller is responsible 22816d39786bSYishai Hadas * for its memory allocation/free. 22826d39786bSYishai Hadas */ 22836d39786bSYishai Hadas struct ib_rwq_ind_table *ib_create_rwq_ind_table(struct ib_device *device, 22846d39786bSYishai Hadas struct ib_rwq_ind_table_init_attr *init_attr) 22856d39786bSYishai Hadas { 22866d39786bSYishai Hadas struct ib_rwq_ind_table *rwq_ind_table; 22876d39786bSYishai Hadas int i; 22886d39786bSYishai Hadas u32 table_size; 22896d39786bSYishai Hadas 22903023a1e9SKamal Heib if (!device->ops.create_rwq_ind_table) 229187915bf8SLeon Romanovsky return ERR_PTR(-EOPNOTSUPP); 22926d39786bSYishai Hadas 22936d39786bSYishai Hadas table_size = (1 << init_attr->log_ind_tbl_size); 22943023a1e9SKamal Heib rwq_ind_table = device->ops.create_rwq_ind_table(device, 22956d39786bSYishai Hadas init_attr, NULL); 22966d39786bSYishai Hadas if (IS_ERR(rwq_ind_table)) 22976d39786bSYishai Hadas return rwq_ind_table; 22986d39786bSYishai Hadas 22996d39786bSYishai Hadas rwq_ind_table->ind_tbl = init_attr->ind_tbl; 23006d39786bSYishai Hadas rwq_ind_table->log_ind_tbl_size = init_attr->log_ind_tbl_size; 23016d39786bSYishai Hadas rwq_ind_table->device = device; 23026d39786bSYishai Hadas rwq_ind_table->uobject = NULL; 23036d39786bSYishai Hadas atomic_set(&rwq_ind_table->usecnt, 0); 23046d39786bSYishai Hadas 23056d39786bSYishai Hadas for (i = 0; i < table_size; i++) 23066d39786bSYishai Hadas atomic_inc(&rwq_ind_table->ind_tbl[i]->usecnt); 23076d39786bSYishai Hadas 23086d39786bSYishai Hadas return rwq_ind_table; 23096d39786bSYishai Hadas } 23106d39786bSYishai Hadas EXPORT_SYMBOL(ib_create_rwq_ind_table); 23116d39786bSYishai Hadas 23126d39786bSYishai Hadas /* 23136d39786bSYishai Hadas * ib_destroy_rwq_ind_table - Destroys the specified Indirection Table. 23146d39786bSYishai Hadas * @wq_ind_table: The Indirection Table to destroy. 23156d39786bSYishai Hadas */ 23166d39786bSYishai Hadas int ib_destroy_rwq_ind_table(struct ib_rwq_ind_table *rwq_ind_table) 23176d39786bSYishai Hadas { 23186d39786bSYishai Hadas int err, i; 23196d39786bSYishai Hadas u32 table_size = (1 << rwq_ind_table->log_ind_tbl_size); 23206d39786bSYishai Hadas struct ib_wq **ind_tbl = rwq_ind_table->ind_tbl; 23216d39786bSYishai Hadas 23226d39786bSYishai Hadas if (atomic_read(&rwq_ind_table->usecnt)) 23236d39786bSYishai Hadas return -EBUSY; 23246d39786bSYishai Hadas 23253023a1e9SKamal Heib err = rwq_ind_table->device->ops.destroy_rwq_ind_table(rwq_ind_table); 23266d39786bSYishai Hadas if (!err) { 23276d39786bSYishai Hadas for (i = 0; i < table_size; i++) 23286d39786bSYishai Hadas atomic_dec(&ind_tbl[i]->usecnt); 23296d39786bSYishai Hadas } 23306d39786bSYishai Hadas 23316d39786bSYishai Hadas return err; 23326d39786bSYishai Hadas } 23336d39786bSYishai Hadas EXPORT_SYMBOL(ib_destroy_rwq_ind_table); 23346d39786bSYishai Hadas 23351b01d335SSagi Grimberg int ib_check_mr_status(struct ib_mr *mr, u32 check_mask, 23361b01d335SSagi Grimberg struct ib_mr_status *mr_status) 23371b01d335SSagi Grimberg { 23383023a1e9SKamal Heib if (!mr->device->ops.check_mr_status) 23393023a1e9SKamal Heib return -EOPNOTSUPP; 23403023a1e9SKamal Heib 23413023a1e9SKamal Heib return mr->device->ops.check_mr_status(mr, check_mask, mr_status); 23421b01d335SSagi Grimberg } 23431b01d335SSagi Grimberg EXPORT_SYMBOL(ib_check_mr_status); 23444c67e2bfSSagi Grimberg 234550174a7fSEli Cohen int ib_set_vf_link_state(struct ib_device *device, int vf, u8 port, 234650174a7fSEli Cohen int state) 234750174a7fSEli Cohen { 23483023a1e9SKamal Heib if (!device->ops.set_vf_link_state) 234987915bf8SLeon Romanovsky return -EOPNOTSUPP; 235050174a7fSEli Cohen 23513023a1e9SKamal Heib return device->ops.set_vf_link_state(device, vf, port, state); 235250174a7fSEli Cohen } 235350174a7fSEli Cohen EXPORT_SYMBOL(ib_set_vf_link_state); 235450174a7fSEli Cohen 235550174a7fSEli Cohen int ib_get_vf_config(struct ib_device *device, int vf, u8 port, 235650174a7fSEli Cohen struct ifla_vf_info *info) 235750174a7fSEli Cohen { 23583023a1e9SKamal Heib if (!device->ops.get_vf_config) 235987915bf8SLeon Romanovsky return -EOPNOTSUPP; 236050174a7fSEli Cohen 23613023a1e9SKamal Heib return device->ops.get_vf_config(device, vf, port, info); 236250174a7fSEli Cohen } 236350174a7fSEli Cohen EXPORT_SYMBOL(ib_get_vf_config); 236450174a7fSEli Cohen 236550174a7fSEli Cohen int ib_get_vf_stats(struct ib_device *device, int vf, u8 port, 236650174a7fSEli Cohen struct ifla_vf_stats *stats) 236750174a7fSEli Cohen { 23683023a1e9SKamal Heib if (!device->ops.get_vf_stats) 236987915bf8SLeon Romanovsky return -EOPNOTSUPP; 237050174a7fSEli Cohen 23713023a1e9SKamal Heib return device->ops.get_vf_stats(device, vf, port, stats); 237250174a7fSEli Cohen } 237350174a7fSEli Cohen EXPORT_SYMBOL(ib_get_vf_stats); 237450174a7fSEli Cohen 237550174a7fSEli Cohen int ib_set_vf_guid(struct ib_device *device, int vf, u8 port, u64 guid, 237650174a7fSEli Cohen int type) 237750174a7fSEli Cohen { 23783023a1e9SKamal Heib if (!device->ops.set_vf_guid) 237987915bf8SLeon Romanovsky return -EOPNOTSUPP; 238050174a7fSEli Cohen 23813023a1e9SKamal Heib return device->ops.set_vf_guid(device, vf, port, guid, type); 238250174a7fSEli Cohen } 238350174a7fSEli Cohen EXPORT_SYMBOL(ib_set_vf_guid); 238450174a7fSEli Cohen 23854c67e2bfSSagi Grimberg /** 23864c67e2bfSSagi Grimberg * ib_map_mr_sg() - Map the largest prefix of a dma mapped SG list 23874c67e2bfSSagi Grimberg * and set it the memory region. 23884c67e2bfSSagi Grimberg * @mr: memory region 23894c67e2bfSSagi Grimberg * @sg: dma mapped scatterlist 23904c67e2bfSSagi Grimberg * @sg_nents: number of entries in sg 2391ff2ba993SChristoph Hellwig * @sg_offset: offset in bytes into sg 23924c67e2bfSSagi Grimberg * @page_size: page vector desired page size 23934c67e2bfSSagi Grimberg * 23944c67e2bfSSagi Grimberg * Constraints: 23954c67e2bfSSagi Grimberg * - The first sg element is allowed to have an offset. 239652746129SBart Van Assche * - Each sg element must either be aligned to page_size or virtually 239752746129SBart Van Assche * contiguous to the previous element. In case an sg element has a 239852746129SBart Van Assche * non-contiguous offset, the mapping prefix will not include it. 23994c67e2bfSSagi Grimberg * - The last sg element is allowed to have length less than page_size. 24004c67e2bfSSagi Grimberg * - If sg_nents total byte length exceeds the mr max_num_sge * page_size 24014c67e2bfSSagi Grimberg * then only max_num_sg entries will be mapped. 240252746129SBart Van Assche * - If the MR was allocated with type IB_MR_TYPE_SG_GAPS, none of these 2403f5aa9159SSagi Grimberg * constraints holds and the page_size argument is ignored. 24044c67e2bfSSagi Grimberg * 24054c67e2bfSSagi Grimberg * Returns the number of sg elements that were mapped to the memory region. 24064c67e2bfSSagi Grimberg * 24074c67e2bfSSagi Grimberg * After this completes successfully, the memory region 24084c67e2bfSSagi Grimberg * is ready for registration. 24094c67e2bfSSagi Grimberg */ 2410ff2ba993SChristoph Hellwig int ib_map_mr_sg(struct ib_mr *mr, struct scatterlist *sg, int sg_nents, 24119aa8b321SBart Van Assche unsigned int *sg_offset, unsigned int page_size) 24124c67e2bfSSagi Grimberg { 24133023a1e9SKamal Heib if (unlikely(!mr->device->ops.map_mr_sg)) 241487915bf8SLeon Romanovsky return -EOPNOTSUPP; 24154c67e2bfSSagi Grimberg 24164c67e2bfSSagi Grimberg mr->page_size = page_size; 24174c67e2bfSSagi Grimberg 24183023a1e9SKamal Heib return mr->device->ops.map_mr_sg(mr, sg, sg_nents, sg_offset); 24194c67e2bfSSagi Grimberg } 24204c67e2bfSSagi Grimberg EXPORT_SYMBOL(ib_map_mr_sg); 24214c67e2bfSSagi Grimberg 24224c67e2bfSSagi Grimberg /** 24234c67e2bfSSagi Grimberg * ib_sg_to_pages() - Convert the largest prefix of a sg list 24244c67e2bfSSagi Grimberg * to a page vector 24254c67e2bfSSagi Grimberg * @mr: memory region 24264c67e2bfSSagi Grimberg * @sgl: dma mapped scatterlist 24274c67e2bfSSagi Grimberg * @sg_nents: number of entries in sg 24289aa8b321SBart Van Assche * @sg_offset_p: IN: start offset in bytes into sg 24299aa8b321SBart Van Assche * OUT: offset in bytes for element n of the sg of the first 24309aa8b321SBart Van Assche * byte that has not been processed where n is the return 24319aa8b321SBart Van Assche * value of this function. 24324c67e2bfSSagi Grimberg * @set_page: driver page assignment function pointer 24334c67e2bfSSagi Grimberg * 24348f5ba10eSBart Van Assche * Core service helper for drivers to convert the largest 24354c67e2bfSSagi Grimberg * prefix of given sg list to a page vector. The sg list 24364c67e2bfSSagi Grimberg * prefix converted is the prefix that meet the requirements 24374c67e2bfSSagi Grimberg * of ib_map_mr_sg. 24384c67e2bfSSagi Grimberg * 24394c67e2bfSSagi Grimberg * Returns the number of sg elements that were assigned to 24404c67e2bfSSagi Grimberg * a page vector. 24414c67e2bfSSagi Grimberg */ 2442ff2ba993SChristoph Hellwig int ib_sg_to_pages(struct ib_mr *mr, struct scatterlist *sgl, int sg_nents, 24439aa8b321SBart Van Assche unsigned int *sg_offset_p, int (*set_page)(struct ib_mr *, u64)) 24444c67e2bfSSagi Grimberg { 24454c67e2bfSSagi Grimberg struct scatterlist *sg; 2446b6aeb980SBart Van Assche u64 last_end_dma_addr = 0; 24479aa8b321SBart Van Assche unsigned int sg_offset = sg_offset_p ? *sg_offset_p : 0; 24484c67e2bfSSagi Grimberg unsigned int last_page_off = 0; 24494c67e2bfSSagi Grimberg u64 page_mask = ~((u64)mr->page_size - 1); 24508f5ba10eSBart Van Assche int i, ret; 24514c67e2bfSSagi Grimberg 24529aa8b321SBart Van Assche if (unlikely(sg_nents <= 0 || sg_offset > sg_dma_len(&sgl[0]))) 24539aa8b321SBart Van Assche return -EINVAL; 24549aa8b321SBart Van Assche 2455ff2ba993SChristoph Hellwig mr->iova = sg_dma_address(&sgl[0]) + sg_offset; 24564c67e2bfSSagi Grimberg mr->length = 0; 24574c67e2bfSSagi Grimberg 24584c67e2bfSSagi Grimberg for_each_sg(sgl, sg, sg_nents, i) { 2459ff2ba993SChristoph Hellwig u64 dma_addr = sg_dma_address(sg) + sg_offset; 24609aa8b321SBart Van Assche u64 prev_addr = dma_addr; 2461ff2ba993SChristoph Hellwig unsigned int dma_len = sg_dma_len(sg) - sg_offset; 24624c67e2bfSSagi Grimberg u64 end_dma_addr = dma_addr + dma_len; 24634c67e2bfSSagi Grimberg u64 page_addr = dma_addr & page_mask; 24644c67e2bfSSagi Grimberg 24658f5ba10eSBart Van Assche /* 24668f5ba10eSBart Van Assche * For the second and later elements, check whether either the 24678f5ba10eSBart Van Assche * end of element i-1 or the start of element i is not aligned 24688f5ba10eSBart Van Assche * on a page boundary. 24698f5ba10eSBart Van Assche */ 24708f5ba10eSBart Van Assche if (i && (last_page_off != 0 || page_addr != dma_addr)) { 24718f5ba10eSBart Van Assche /* Stop mapping if there is a gap. */ 24728f5ba10eSBart Van Assche if (last_end_dma_addr != dma_addr) 24738f5ba10eSBart Van Assche break; 24744c67e2bfSSagi Grimberg 24758f5ba10eSBart Van Assche /* 24768f5ba10eSBart Van Assche * Coalesce this element with the last. If it is small 24778f5ba10eSBart Van Assche * enough just update mr->length. Otherwise start 24788f5ba10eSBart Van Assche * mapping from the next page. 24798f5ba10eSBart Van Assche */ 24808f5ba10eSBart Van Assche goto next_page; 24814c67e2bfSSagi Grimberg } 24824c67e2bfSSagi Grimberg 24834c67e2bfSSagi Grimberg do { 24848f5ba10eSBart Van Assche ret = set_page(mr, page_addr); 24859aa8b321SBart Van Assche if (unlikely(ret < 0)) { 24869aa8b321SBart Van Assche sg_offset = prev_addr - sg_dma_address(sg); 24879aa8b321SBart Van Assche mr->length += prev_addr - dma_addr; 24889aa8b321SBart Van Assche if (sg_offset_p) 24899aa8b321SBart Van Assche *sg_offset_p = sg_offset; 24909aa8b321SBart Van Assche return i || sg_offset ? i : ret; 24919aa8b321SBart Van Assche } 24929aa8b321SBart Van Assche prev_addr = page_addr; 24938f5ba10eSBart Van Assche next_page: 24944c67e2bfSSagi Grimberg page_addr += mr->page_size; 24954c67e2bfSSagi Grimberg } while (page_addr < end_dma_addr); 24964c67e2bfSSagi Grimberg 24974c67e2bfSSagi Grimberg mr->length += dma_len; 24984c67e2bfSSagi Grimberg last_end_dma_addr = end_dma_addr; 24994c67e2bfSSagi Grimberg last_page_off = end_dma_addr & ~page_mask; 2500ff2ba993SChristoph Hellwig 2501ff2ba993SChristoph Hellwig sg_offset = 0; 25024c67e2bfSSagi Grimberg } 25034c67e2bfSSagi Grimberg 25049aa8b321SBart Van Assche if (sg_offset_p) 25059aa8b321SBart Van Assche *sg_offset_p = 0; 25064c67e2bfSSagi Grimberg return i; 25074c67e2bfSSagi Grimberg } 25084c67e2bfSSagi Grimberg EXPORT_SYMBOL(ib_sg_to_pages); 2509765d6774SSteve Wise 2510765d6774SSteve Wise struct ib_drain_cqe { 2511765d6774SSteve Wise struct ib_cqe cqe; 2512765d6774SSteve Wise struct completion done; 2513765d6774SSteve Wise }; 2514765d6774SSteve Wise 2515765d6774SSteve Wise static void ib_drain_qp_done(struct ib_cq *cq, struct ib_wc *wc) 2516765d6774SSteve Wise { 2517765d6774SSteve Wise struct ib_drain_cqe *cqe = container_of(wc->wr_cqe, struct ib_drain_cqe, 2518765d6774SSteve Wise cqe); 2519765d6774SSteve Wise 2520765d6774SSteve Wise complete(&cqe->done); 2521765d6774SSteve Wise } 2522765d6774SSteve Wise 2523765d6774SSteve Wise /* 2524765d6774SSteve Wise * Post a WR and block until its completion is reaped for the SQ. 2525765d6774SSteve Wise */ 2526765d6774SSteve Wise static void __ib_drain_sq(struct ib_qp *qp) 2527765d6774SSteve Wise { 2528f039f44fSBart Van Assche struct ib_cq *cq = qp->send_cq; 2529765d6774SSteve Wise struct ib_qp_attr attr = { .qp_state = IB_QPS_ERR }; 2530765d6774SSteve Wise struct ib_drain_cqe sdrain; 2531a1ae7d03SBart Van Assche struct ib_rdma_wr swr = { 2532a1ae7d03SBart Van Assche .wr = { 25336ee68773SAndrew Morton .next = NULL, 25346ee68773SAndrew Morton { .wr_cqe = &sdrain.cqe, }, 2535a1ae7d03SBart Van Assche .opcode = IB_WR_RDMA_WRITE, 2536a1ae7d03SBart Van Assche }, 2537a1ae7d03SBart Van Assche }; 2538765d6774SSteve Wise int ret; 2539765d6774SSteve Wise 2540765d6774SSteve Wise ret = ib_modify_qp(qp, &attr, IB_QP_STATE); 2541765d6774SSteve Wise if (ret) { 2542765d6774SSteve Wise WARN_ONCE(ret, "failed to drain send queue: %d\n", ret); 2543765d6774SSteve Wise return; 2544765d6774SSteve Wise } 2545765d6774SSteve Wise 2546aaebd377SMax Gurtovoy sdrain.cqe.done = ib_drain_qp_done; 2547aaebd377SMax Gurtovoy init_completion(&sdrain.done); 2548aaebd377SMax Gurtovoy 25491fec77bfSBart Van Assche ret = ib_post_send(qp, &swr.wr, NULL); 2550765d6774SSteve Wise if (ret) { 2551765d6774SSteve Wise WARN_ONCE(ret, "failed to drain send queue: %d\n", ret); 2552765d6774SSteve Wise return; 2553765d6774SSteve Wise } 2554765d6774SSteve Wise 2555f039f44fSBart Van Assche if (cq->poll_ctx == IB_POLL_DIRECT) 2556f039f44fSBart Van Assche while (wait_for_completion_timeout(&sdrain.done, HZ / 10) <= 0) 2557f039f44fSBart Van Assche ib_process_cq_direct(cq, -1); 2558f039f44fSBart Van Assche else 2559765d6774SSteve Wise wait_for_completion(&sdrain.done); 2560765d6774SSteve Wise } 2561765d6774SSteve Wise 2562765d6774SSteve Wise /* 2563765d6774SSteve Wise * Post a WR and block until its completion is reaped for the RQ. 2564765d6774SSteve Wise */ 2565765d6774SSteve Wise static void __ib_drain_rq(struct ib_qp *qp) 2566765d6774SSteve Wise { 2567f039f44fSBart Van Assche struct ib_cq *cq = qp->recv_cq; 2568765d6774SSteve Wise struct ib_qp_attr attr = { .qp_state = IB_QPS_ERR }; 2569765d6774SSteve Wise struct ib_drain_cqe rdrain; 25701fec77bfSBart Van Assche struct ib_recv_wr rwr = {}; 2571765d6774SSteve Wise int ret; 2572765d6774SSteve Wise 2573765d6774SSteve Wise ret = ib_modify_qp(qp, &attr, IB_QP_STATE); 2574765d6774SSteve Wise if (ret) { 2575765d6774SSteve Wise WARN_ONCE(ret, "failed to drain recv queue: %d\n", ret); 2576765d6774SSteve Wise return; 2577765d6774SSteve Wise } 2578765d6774SSteve Wise 2579aaebd377SMax Gurtovoy rwr.wr_cqe = &rdrain.cqe; 2580aaebd377SMax Gurtovoy rdrain.cqe.done = ib_drain_qp_done; 2581aaebd377SMax Gurtovoy init_completion(&rdrain.done); 2582aaebd377SMax Gurtovoy 25831fec77bfSBart Van Assche ret = ib_post_recv(qp, &rwr, NULL); 2584765d6774SSteve Wise if (ret) { 2585765d6774SSteve Wise WARN_ONCE(ret, "failed to drain recv queue: %d\n", ret); 2586765d6774SSteve Wise return; 2587765d6774SSteve Wise } 2588765d6774SSteve Wise 2589f039f44fSBart Van Assche if (cq->poll_ctx == IB_POLL_DIRECT) 2590f039f44fSBart Van Assche while (wait_for_completion_timeout(&rdrain.done, HZ / 10) <= 0) 2591f039f44fSBart Van Assche ib_process_cq_direct(cq, -1); 2592f039f44fSBart Van Assche else 2593765d6774SSteve Wise wait_for_completion(&rdrain.done); 2594765d6774SSteve Wise } 2595765d6774SSteve Wise 2596765d6774SSteve Wise /** 2597765d6774SSteve Wise * ib_drain_sq() - Block until all SQ CQEs have been consumed by the 2598765d6774SSteve Wise * application. 2599765d6774SSteve Wise * @qp: queue pair to drain 2600765d6774SSteve Wise * 2601765d6774SSteve Wise * If the device has a provider-specific drain function, then 2602765d6774SSteve Wise * call that. Otherwise call the generic drain function 2603765d6774SSteve Wise * __ib_drain_sq(). 2604765d6774SSteve Wise * 2605765d6774SSteve Wise * The caller must: 2606765d6774SSteve Wise * 2607765d6774SSteve Wise * ensure there is room in the CQ and SQ for the drain work request and 2608765d6774SSteve Wise * completion. 2609765d6774SSteve Wise * 2610f039f44fSBart Van Assche * allocate the CQ using ib_alloc_cq(). 2611765d6774SSteve Wise * 2612765d6774SSteve Wise * ensure that there are no other contexts that are posting WRs concurrently. 2613765d6774SSteve Wise * Otherwise the drain is not guaranteed. 2614765d6774SSteve Wise */ 2615765d6774SSteve Wise void ib_drain_sq(struct ib_qp *qp) 2616765d6774SSteve Wise { 26173023a1e9SKamal Heib if (qp->device->ops.drain_sq) 26183023a1e9SKamal Heib qp->device->ops.drain_sq(qp); 2619765d6774SSteve Wise else 2620765d6774SSteve Wise __ib_drain_sq(qp); 2621765d6774SSteve Wise } 2622765d6774SSteve Wise EXPORT_SYMBOL(ib_drain_sq); 2623765d6774SSteve Wise 2624765d6774SSteve Wise /** 2625765d6774SSteve Wise * ib_drain_rq() - Block until all RQ CQEs have been consumed by the 2626765d6774SSteve Wise * application. 2627765d6774SSteve Wise * @qp: queue pair to drain 2628765d6774SSteve Wise * 2629765d6774SSteve Wise * If the device has a provider-specific drain function, then 2630765d6774SSteve Wise * call that. Otherwise call the generic drain function 2631765d6774SSteve Wise * __ib_drain_rq(). 2632765d6774SSteve Wise * 2633765d6774SSteve Wise * The caller must: 2634765d6774SSteve Wise * 2635765d6774SSteve Wise * ensure there is room in the CQ and RQ for the drain work request and 2636765d6774SSteve Wise * completion. 2637765d6774SSteve Wise * 2638f039f44fSBart Van Assche * allocate the CQ using ib_alloc_cq(). 2639765d6774SSteve Wise * 2640765d6774SSteve Wise * ensure that there are no other contexts that are posting WRs concurrently. 2641765d6774SSteve Wise * Otherwise the drain is not guaranteed. 2642765d6774SSteve Wise */ 2643765d6774SSteve Wise void ib_drain_rq(struct ib_qp *qp) 2644765d6774SSteve Wise { 26453023a1e9SKamal Heib if (qp->device->ops.drain_rq) 26463023a1e9SKamal Heib qp->device->ops.drain_rq(qp); 2647765d6774SSteve Wise else 2648765d6774SSteve Wise __ib_drain_rq(qp); 2649765d6774SSteve Wise } 2650765d6774SSteve Wise EXPORT_SYMBOL(ib_drain_rq); 2651765d6774SSteve Wise 2652765d6774SSteve Wise /** 2653765d6774SSteve Wise * ib_drain_qp() - Block until all CQEs have been consumed by the 2654765d6774SSteve Wise * application on both the RQ and SQ. 2655765d6774SSteve Wise * @qp: queue pair to drain 2656765d6774SSteve Wise * 2657765d6774SSteve Wise * The caller must: 2658765d6774SSteve Wise * 2659765d6774SSteve Wise * ensure there is room in the CQ(s), SQ, and RQ for drain work requests 2660765d6774SSteve Wise * and completions. 2661765d6774SSteve Wise * 2662f039f44fSBart Van Assche * allocate the CQs using ib_alloc_cq(). 2663765d6774SSteve Wise * 2664765d6774SSteve Wise * ensure that there are no other contexts that are posting WRs concurrently. 2665765d6774SSteve Wise * Otherwise the drain is not guaranteed. 2666765d6774SSteve Wise */ 2667765d6774SSteve Wise void ib_drain_qp(struct ib_qp *qp) 2668765d6774SSteve Wise { 2669765d6774SSteve Wise ib_drain_sq(qp); 267042235f80SSagi Grimberg if (!qp->srq) 2671765d6774SSteve Wise ib_drain_rq(qp); 2672765d6774SSteve Wise } 2673765d6774SSteve Wise EXPORT_SYMBOL(ib_drain_qp); 2674f6a8a19bSDenis Drozdov 2675f6a8a19bSDenis Drozdov struct net_device *rdma_alloc_netdev(struct ib_device *device, u8 port_num, 2676f6a8a19bSDenis Drozdov enum rdma_netdev_t type, const char *name, 2677f6a8a19bSDenis Drozdov unsigned char name_assign_type, 2678f6a8a19bSDenis Drozdov void (*setup)(struct net_device *)) 2679f6a8a19bSDenis Drozdov { 2680f6a8a19bSDenis Drozdov struct rdma_netdev_alloc_params params; 2681f6a8a19bSDenis Drozdov struct net_device *netdev; 2682f6a8a19bSDenis Drozdov int rc; 2683f6a8a19bSDenis Drozdov 26843023a1e9SKamal Heib if (!device->ops.rdma_netdev_get_params) 2685f6a8a19bSDenis Drozdov return ERR_PTR(-EOPNOTSUPP); 2686f6a8a19bSDenis Drozdov 26873023a1e9SKamal Heib rc = device->ops.rdma_netdev_get_params(device, port_num, type, 26883023a1e9SKamal Heib ¶ms); 2689f6a8a19bSDenis Drozdov if (rc) 2690f6a8a19bSDenis Drozdov return ERR_PTR(rc); 2691f6a8a19bSDenis Drozdov 2692f6a8a19bSDenis Drozdov netdev = alloc_netdev_mqs(params.sizeof_priv, name, name_assign_type, 2693f6a8a19bSDenis Drozdov setup, params.txqs, params.rxqs); 2694f6a8a19bSDenis Drozdov if (!netdev) 2695f6a8a19bSDenis Drozdov return ERR_PTR(-ENOMEM); 2696f6a8a19bSDenis Drozdov 2697f6a8a19bSDenis Drozdov return netdev; 2698f6a8a19bSDenis Drozdov } 2699f6a8a19bSDenis Drozdov EXPORT_SYMBOL(rdma_alloc_netdev); 27005d6b0cb3SDenis Drozdov 27015d6b0cb3SDenis Drozdov int rdma_init_netdev(struct ib_device *device, u8 port_num, 27025d6b0cb3SDenis Drozdov enum rdma_netdev_t type, const char *name, 27035d6b0cb3SDenis Drozdov unsigned char name_assign_type, 27045d6b0cb3SDenis Drozdov void (*setup)(struct net_device *), 27055d6b0cb3SDenis Drozdov struct net_device *netdev) 27065d6b0cb3SDenis Drozdov { 27075d6b0cb3SDenis Drozdov struct rdma_netdev_alloc_params params; 27085d6b0cb3SDenis Drozdov int rc; 27095d6b0cb3SDenis Drozdov 27103023a1e9SKamal Heib if (!device->ops.rdma_netdev_get_params) 27115d6b0cb3SDenis Drozdov return -EOPNOTSUPP; 27125d6b0cb3SDenis Drozdov 27133023a1e9SKamal Heib rc = device->ops.rdma_netdev_get_params(device, port_num, type, 27143023a1e9SKamal Heib ¶ms); 27155d6b0cb3SDenis Drozdov if (rc) 27165d6b0cb3SDenis Drozdov return rc; 27175d6b0cb3SDenis Drozdov 27185d6b0cb3SDenis Drozdov return params.initialize_rdma_netdev(device, port_num, 27195d6b0cb3SDenis Drozdov netdev, params.param); 27205d6b0cb3SDenis Drozdov } 27215d6b0cb3SDenis Drozdov EXPORT_SYMBOL(rdma_init_netdev); 2722a808273aSShiraz Saleem 2723a808273aSShiraz Saleem void __rdma_block_iter_start(struct ib_block_iter *biter, 2724a808273aSShiraz Saleem struct scatterlist *sglist, unsigned int nents, 2725a808273aSShiraz Saleem unsigned long pgsz) 2726a808273aSShiraz Saleem { 2727a808273aSShiraz Saleem memset(biter, 0, sizeof(struct ib_block_iter)); 2728a808273aSShiraz Saleem biter->__sg = sglist; 2729a808273aSShiraz Saleem biter->__sg_nents = nents; 2730a808273aSShiraz Saleem 2731a808273aSShiraz Saleem /* Driver provides best block size to use */ 2732a808273aSShiraz Saleem biter->__pg_bit = __fls(pgsz); 2733a808273aSShiraz Saleem } 2734a808273aSShiraz Saleem EXPORT_SYMBOL(__rdma_block_iter_start); 2735a808273aSShiraz Saleem 2736a808273aSShiraz Saleem bool __rdma_block_iter_next(struct ib_block_iter *biter) 2737a808273aSShiraz Saleem { 2738a808273aSShiraz Saleem unsigned int block_offset; 2739a808273aSShiraz Saleem 2740a808273aSShiraz Saleem if (!biter->__sg_nents || !biter->__sg) 2741a808273aSShiraz Saleem return false; 2742a808273aSShiraz Saleem 2743a808273aSShiraz Saleem biter->__dma_addr = sg_dma_address(biter->__sg) + biter->__sg_advance; 2744a808273aSShiraz Saleem block_offset = biter->__dma_addr & (BIT_ULL(biter->__pg_bit) - 1); 2745a808273aSShiraz Saleem biter->__sg_advance += BIT_ULL(biter->__pg_bit) - block_offset; 2746a808273aSShiraz Saleem 2747a808273aSShiraz Saleem if (biter->__sg_advance >= sg_dma_len(biter->__sg)) { 2748a808273aSShiraz Saleem biter->__sg_advance = 0; 2749a808273aSShiraz Saleem biter->__sg = sg_next(biter->__sg); 2750a808273aSShiraz Saleem biter->__sg_nents--; 2751a808273aSShiraz Saleem } 2752a808273aSShiraz Saleem 2753a808273aSShiraz Saleem return true; 2754a808273aSShiraz Saleem } 2755a808273aSShiraz Saleem EXPORT_SYMBOL(__rdma_block_iter_next); 2756