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 563e5901cbSChuck Lever #include <trace/events/rdma_core.h> 573e5901cbSChuck Lever 58c0348eb0SParav Pandit static int ib_resolve_eth_dmac(struct ib_device *device, 59c0348eb0SParav Pandit struct rdma_ah_attr *ah_attr); 60c0348eb0SParav Pandit 612b1b5b60SSagi Grimberg static const char * const ib_events[] = { 622b1b5b60SSagi Grimberg [IB_EVENT_CQ_ERR] = "CQ error", 632b1b5b60SSagi Grimberg [IB_EVENT_QP_FATAL] = "QP fatal error", 642b1b5b60SSagi Grimberg [IB_EVENT_QP_REQ_ERR] = "QP request error", 652b1b5b60SSagi Grimberg [IB_EVENT_QP_ACCESS_ERR] = "QP access error", 662b1b5b60SSagi Grimberg [IB_EVENT_COMM_EST] = "communication established", 672b1b5b60SSagi Grimberg [IB_EVENT_SQ_DRAINED] = "send queue drained", 682b1b5b60SSagi Grimberg [IB_EVENT_PATH_MIG] = "path migration successful", 692b1b5b60SSagi Grimberg [IB_EVENT_PATH_MIG_ERR] = "path migration error", 702b1b5b60SSagi Grimberg [IB_EVENT_DEVICE_FATAL] = "device fatal error", 712b1b5b60SSagi Grimberg [IB_EVENT_PORT_ACTIVE] = "port active", 722b1b5b60SSagi Grimberg [IB_EVENT_PORT_ERR] = "port error", 732b1b5b60SSagi Grimberg [IB_EVENT_LID_CHANGE] = "LID change", 742b1b5b60SSagi Grimberg [IB_EVENT_PKEY_CHANGE] = "P_key change", 752b1b5b60SSagi Grimberg [IB_EVENT_SM_CHANGE] = "SM change", 762b1b5b60SSagi Grimberg [IB_EVENT_SRQ_ERR] = "SRQ error", 772b1b5b60SSagi Grimberg [IB_EVENT_SRQ_LIMIT_REACHED] = "SRQ limit reached", 782b1b5b60SSagi Grimberg [IB_EVENT_QP_LAST_WQE_REACHED] = "last WQE reached", 792b1b5b60SSagi Grimberg [IB_EVENT_CLIENT_REREGISTER] = "client reregister", 802b1b5b60SSagi Grimberg [IB_EVENT_GID_CHANGE] = "GID changed", 812b1b5b60SSagi Grimberg }; 822b1b5b60SSagi Grimberg 83db7489e0SBart Van Assche const char *__attribute_const__ ib_event_msg(enum ib_event_type event) 842b1b5b60SSagi Grimberg { 852b1b5b60SSagi Grimberg size_t index = event; 862b1b5b60SSagi Grimberg 872b1b5b60SSagi Grimberg return (index < ARRAY_SIZE(ib_events) && ib_events[index]) ? 882b1b5b60SSagi Grimberg ib_events[index] : "unrecognized event"; 892b1b5b60SSagi Grimberg } 902b1b5b60SSagi Grimberg EXPORT_SYMBOL(ib_event_msg); 912b1b5b60SSagi Grimberg 922b1b5b60SSagi Grimberg static const char * const wc_statuses[] = { 932b1b5b60SSagi Grimberg [IB_WC_SUCCESS] = "success", 942b1b5b60SSagi Grimberg [IB_WC_LOC_LEN_ERR] = "local length error", 952b1b5b60SSagi Grimberg [IB_WC_LOC_QP_OP_ERR] = "local QP operation error", 962b1b5b60SSagi Grimberg [IB_WC_LOC_EEC_OP_ERR] = "local EE context operation error", 972b1b5b60SSagi Grimberg [IB_WC_LOC_PROT_ERR] = "local protection error", 982b1b5b60SSagi Grimberg [IB_WC_WR_FLUSH_ERR] = "WR flushed", 992b1b5b60SSagi Grimberg [IB_WC_MW_BIND_ERR] = "memory management operation error", 1002b1b5b60SSagi Grimberg [IB_WC_BAD_RESP_ERR] = "bad response error", 1012b1b5b60SSagi Grimberg [IB_WC_LOC_ACCESS_ERR] = "local access error", 1022b1b5b60SSagi Grimberg [IB_WC_REM_INV_REQ_ERR] = "invalid request error", 1032b1b5b60SSagi Grimberg [IB_WC_REM_ACCESS_ERR] = "remote access error", 1042b1b5b60SSagi Grimberg [IB_WC_REM_OP_ERR] = "remote operation error", 1052b1b5b60SSagi Grimberg [IB_WC_RETRY_EXC_ERR] = "transport retry counter exceeded", 1062b1b5b60SSagi Grimberg [IB_WC_RNR_RETRY_EXC_ERR] = "RNR retry counter exceeded", 1072b1b5b60SSagi Grimberg [IB_WC_LOC_RDD_VIOL_ERR] = "local RDD violation error", 1082b1b5b60SSagi Grimberg [IB_WC_REM_INV_RD_REQ_ERR] = "remote invalid RD request", 1092b1b5b60SSagi Grimberg [IB_WC_REM_ABORT_ERR] = "operation aborted", 1102b1b5b60SSagi Grimberg [IB_WC_INV_EECN_ERR] = "invalid EE context number", 1112b1b5b60SSagi Grimberg [IB_WC_INV_EEC_STATE_ERR] = "invalid EE context state", 1122b1b5b60SSagi Grimberg [IB_WC_FATAL_ERR] = "fatal error", 1132b1b5b60SSagi Grimberg [IB_WC_RESP_TIMEOUT_ERR] = "response timeout error", 1142b1b5b60SSagi Grimberg [IB_WC_GENERAL_ERR] = "general error", 1152b1b5b60SSagi Grimberg }; 1162b1b5b60SSagi Grimberg 117db7489e0SBart Van Assche const char *__attribute_const__ ib_wc_status_msg(enum ib_wc_status status) 1182b1b5b60SSagi Grimberg { 1192b1b5b60SSagi Grimberg size_t index = status; 1202b1b5b60SSagi Grimberg 1212b1b5b60SSagi Grimberg return (index < ARRAY_SIZE(wc_statuses) && wc_statuses[index]) ? 1222b1b5b60SSagi Grimberg wc_statuses[index] : "unrecognized status"; 1232b1b5b60SSagi Grimberg } 1242b1b5b60SSagi Grimberg EXPORT_SYMBOL(ib_wc_status_msg); 1252b1b5b60SSagi Grimberg 1268385fd84SRoland Dreier __attribute_const__ int ib_rate_to_mult(enum ib_rate rate) 127bf6a9e31SJack Morgenstein { 128bf6a9e31SJack Morgenstein switch (rate) { 129bf6a9e31SJack Morgenstein case IB_RATE_2_5_GBPS: return 1; 130bf6a9e31SJack Morgenstein case IB_RATE_5_GBPS: return 2; 131bf6a9e31SJack Morgenstein case IB_RATE_10_GBPS: return 4; 132bf6a9e31SJack Morgenstein case IB_RATE_20_GBPS: return 8; 133bf6a9e31SJack Morgenstein case IB_RATE_30_GBPS: return 12; 134bf6a9e31SJack Morgenstein case IB_RATE_40_GBPS: return 16; 135bf6a9e31SJack Morgenstein case IB_RATE_60_GBPS: return 24; 136bf6a9e31SJack Morgenstein case IB_RATE_80_GBPS: return 32; 137bf6a9e31SJack Morgenstein case IB_RATE_120_GBPS: return 48; 138e2dda368SHans Westgaard Ry case IB_RATE_14_GBPS: return 6; 139e2dda368SHans Westgaard Ry case IB_RATE_56_GBPS: return 22; 140e2dda368SHans Westgaard Ry case IB_RATE_112_GBPS: return 45; 141e2dda368SHans Westgaard Ry case IB_RATE_168_GBPS: return 67; 142e2dda368SHans Westgaard Ry case IB_RATE_25_GBPS: return 10; 143e2dda368SHans Westgaard Ry case IB_RATE_100_GBPS: return 40; 144e2dda368SHans Westgaard Ry case IB_RATE_200_GBPS: return 80; 145e2dda368SHans Westgaard Ry case IB_RATE_300_GBPS: return 120; 146a5a5d199SMichael Guralnik case IB_RATE_28_GBPS: return 11; 147a5a5d199SMichael Guralnik case IB_RATE_50_GBPS: return 20; 148a5a5d199SMichael Guralnik case IB_RATE_400_GBPS: return 160; 149a5a5d199SMichael Guralnik case IB_RATE_600_GBPS: return 240; 150bf6a9e31SJack Morgenstein default: return -1; 151bf6a9e31SJack Morgenstein } 152bf6a9e31SJack Morgenstein } 153bf6a9e31SJack Morgenstein EXPORT_SYMBOL(ib_rate_to_mult); 154bf6a9e31SJack Morgenstein 1558385fd84SRoland Dreier __attribute_const__ enum ib_rate mult_to_ib_rate(int mult) 156bf6a9e31SJack Morgenstein { 157bf6a9e31SJack Morgenstein switch (mult) { 158bf6a9e31SJack Morgenstein case 1: return IB_RATE_2_5_GBPS; 159bf6a9e31SJack Morgenstein case 2: return IB_RATE_5_GBPS; 160bf6a9e31SJack Morgenstein case 4: return IB_RATE_10_GBPS; 161bf6a9e31SJack Morgenstein case 8: return IB_RATE_20_GBPS; 162bf6a9e31SJack Morgenstein case 12: return IB_RATE_30_GBPS; 163bf6a9e31SJack Morgenstein case 16: return IB_RATE_40_GBPS; 164bf6a9e31SJack Morgenstein case 24: return IB_RATE_60_GBPS; 165bf6a9e31SJack Morgenstein case 32: return IB_RATE_80_GBPS; 166bf6a9e31SJack Morgenstein case 48: return IB_RATE_120_GBPS; 167e2dda368SHans Westgaard Ry case 6: return IB_RATE_14_GBPS; 168e2dda368SHans Westgaard Ry case 22: return IB_RATE_56_GBPS; 169e2dda368SHans Westgaard Ry case 45: return IB_RATE_112_GBPS; 170e2dda368SHans Westgaard Ry case 67: return IB_RATE_168_GBPS; 171e2dda368SHans Westgaard Ry case 10: return IB_RATE_25_GBPS; 172e2dda368SHans Westgaard Ry case 40: return IB_RATE_100_GBPS; 173e2dda368SHans Westgaard Ry case 80: return IB_RATE_200_GBPS; 174e2dda368SHans Westgaard Ry case 120: return IB_RATE_300_GBPS; 175a5a5d199SMichael Guralnik case 11: return IB_RATE_28_GBPS; 176a5a5d199SMichael Guralnik case 20: return IB_RATE_50_GBPS; 177a5a5d199SMichael Guralnik case 160: return IB_RATE_400_GBPS; 178a5a5d199SMichael Guralnik case 240: return IB_RATE_600_GBPS; 179bf6a9e31SJack Morgenstein default: return IB_RATE_PORT_CURRENT; 180bf6a9e31SJack Morgenstein } 181bf6a9e31SJack Morgenstein } 182bf6a9e31SJack Morgenstein EXPORT_SYMBOL(mult_to_ib_rate); 183bf6a9e31SJack Morgenstein 1848385fd84SRoland Dreier __attribute_const__ int ib_rate_to_mbps(enum ib_rate rate) 18571eeba16SMarcel Apfelbaum { 18671eeba16SMarcel Apfelbaum switch (rate) { 18771eeba16SMarcel Apfelbaum case IB_RATE_2_5_GBPS: return 2500; 18871eeba16SMarcel Apfelbaum case IB_RATE_5_GBPS: return 5000; 18971eeba16SMarcel Apfelbaum case IB_RATE_10_GBPS: return 10000; 19071eeba16SMarcel Apfelbaum case IB_RATE_20_GBPS: return 20000; 19171eeba16SMarcel Apfelbaum case IB_RATE_30_GBPS: return 30000; 19271eeba16SMarcel Apfelbaum case IB_RATE_40_GBPS: return 40000; 19371eeba16SMarcel Apfelbaum case IB_RATE_60_GBPS: return 60000; 19471eeba16SMarcel Apfelbaum case IB_RATE_80_GBPS: return 80000; 19571eeba16SMarcel Apfelbaum case IB_RATE_120_GBPS: return 120000; 19671eeba16SMarcel Apfelbaum case IB_RATE_14_GBPS: return 14062; 19771eeba16SMarcel Apfelbaum case IB_RATE_56_GBPS: return 56250; 19871eeba16SMarcel Apfelbaum case IB_RATE_112_GBPS: return 112500; 19971eeba16SMarcel Apfelbaum case IB_RATE_168_GBPS: return 168750; 20071eeba16SMarcel Apfelbaum case IB_RATE_25_GBPS: return 25781; 20171eeba16SMarcel Apfelbaum case IB_RATE_100_GBPS: return 103125; 20271eeba16SMarcel Apfelbaum case IB_RATE_200_GBPS: return 206250; 20371eeba16SMarcel Apfelbaum case IB_RATE_300_GBPS: return 309375; 204a5a5d199SMichael Guralnik case IB_RATE_28_GBPS: return 28125; 205a5a5d199SMichael Guralnik case IB_RATE_50_GBPS: return 53125; 206a5a5d199SMichael Guralnik case IB_RATE_400_GBPS: return 425000; 207a5a5d199SMichael Guralnik case IB_RATE_600_GBPS: return 637500; 20871eeba16SMarcel Apfelbaum default: return -1; 20971eeba16SMarcel Apfelbaum } 21071eeba16SMarcel Apfelbaum } 21171eeba16SMarcel Apfelbaum EXPORT_SYMBOL(ib_rate_to_mbps); 21271eeba16SMarcel Apfelbaum 2138385fd84SRoland Dreier __attribute_const__ enum rdma_transport_type 2145d60c111SJason Gunthorpe rdma_node_get_transport(unsigned int node_type) 21507ebafbaSTom Tucker { 216cdc596d8SLeon Romanovsky 217cdc596d8SLeon Romanovsky if (node_type == RDMA_NODE_USNIC) 2185db5765eSUpinder Malhi return RDMA_TRANSPORT_USNIC; 219cdc596d8SLeon Romanovsky if (node_type == RDMA_NODE_USNIC_UDP) 220248567f7SUpinder Malhi return RDMA_TRANSPORT_USNIC_UDP; 221cdc596d8SLeon Romanovsky if (node_type == RDMA_NODE_RNIC) 222cdc596d8SLeon Romanovsky return RDMA_TRANSPORT_IWARP; 223f95be3d2SGal Pressman if (node_type == RDMA_NODE_UNSPECIFIED) 224f95be3d2SGal Pressman return RDMA_TRANSPORT_UNSPECIFIED; 225cdc596d8SLeon Romanovsky 226cdc596d8SLeon Romanovsky return RDMA_TRANSPORT_IB; 22707ebafbaSTom Tucker } 22807ebafbaSTom Tucker EXPORT_SYMBOL(rdma_node_get_transport); 22907ebafbaSTom Tucker 230a3f5adafSEli Cohen enum rdma_link_layer rdma_port_get_link_layer(struct ib_device *device, u8 port_num) 231a3f5adafSEli Cohen { 23282901e3eSLeon Romanovsky enum rdma_transport_type lt; 2333023a1e9SKamal Heib if (device->ops.get_link_layer) 2343023a1e9SKamal Heib return device->ops.get_link_layer(device, port_num); 235a3f5adafSEli Cohen 23682901e3eSLeon Romanovsky lt = rdma_node_get_transport(device->node_type); 23782901e3eSLeon Romanovsky if (lt == RDMA_TRANSPORT_IB) 238a3f5adafSEli Cohen return IB_LINK_LAYER_INFINIBAND; 23982901e3eSLeon Romanovsky 240a3f5adafSEli Cohen return IB_LINK_LAYER_ETHERNET; 241a3f5adafSEli Cohen } 242a3f5adafSEli Cohen EXPORT_SYMBOL(rdma_port_get_link_layer); 243a3f5adafSEli Cohen 2441da177e4SLinus Torvalds /* Protection domains */ 2451da177e4SLinus Torvalds 24696249d70SJason Gunthorpe /** 24796249d70SJason Gunthorpe * ib_alloc_pd - Allocates an unused protection domain. 24896249d70SJason Gunthorpe * @device: The device on which to allocate the protection domain. 249094c88f3Srd.dunlab@gmail.com * @flags: protection domain flags 250094c88f3Srd.dunlab@gmail.com * @caller: caller's build-time module name 25196249d70SJason Gunthorpe * 25296249d70SJason Gunthorpe * A protection domain object provides an association between QPs, shared 25396249d70SJason Gunthorpe * receive queues, address handles, memory regions, and memory windows. 25496249d70SJason Gunthorpe * 25596249d70SJason Gunthorpe * Every PD has a local_dma_lkey which can be used as the lkey value for local 25696249d70SJason Gunthorpe * memory operations. 25796249d70SJason Gunthorpe */ 258ed082d36SChristoph Hellwig struct ib_pd *__ib_alloc_pd(struct ib_device *device, unsigned int flags, 259ed082d36SChristoph Hellwig const char *caller) 2601da177e4SLinus Torvalds { 2611da177e4SLinus Torvalds struct ib_pd *pd; 262ed082d36SChristoph Hellwig int mr_access_flags = 0; 26321a428a0SLeon Romanovsky int ret; 2641da177e4SLinus Torvalds 26521a428a0SLeon Romanovsky pd = rdma_zalloc_drv_obj(device, ib_pd); 26621a428a0SLeon Romanovsky if (!pd) 26721a428a0SLeon Romanovsky return ERR_PTR(-ENOMEM); 2681da177e4SLinus Torvalds 2691da177e4SLinus Torvalds pd->device = device; 270b5e81bf5SRoland Dreier pd->uobject = NULL; 27150d46335SChristoph Hellwig pd->__internal_mr = NULL; 2721da177e4SLinus Torvalds atomic_set(&pd->usecnt, 0); 273ed082d36SChristoph Hellwig pd->flags = flags; 27496249d70SJason Gunthorpe 27521a428a0SLeon Romanovsky pd->res.type = RDMA_RESTRACK_PD; 27621a428a0SLeon Romanovsky rdma_restrack_set_task(&pd->res, caller); 27721a428a0SLeon Romanovsky 278ff23dfa1SShamir Rabinovitch ret = device->ops.alloc_pd(pd, NULL); 27921a428a0SLeon Romanovsky if (ret) { 28021a428a0SLeon Romanovsky kfree(pd); 28121a428a0SLeon Romanovsky return ERR_PTR(ret); 28221a428a0SLeon Romanovsky } 28321a428a0SLeon Romanovsky rdma_restrack_kadd(&pd->res); 28421a428a0SLeon Romanovsky 28586bee4c9SOr Gerlitz if (device->attrs.device_cap_flags & IB_DEVICE_LOCAL_DMA_LKEY) 28696249d70SJason Gunthorpe pd->local_dma_lkey = device->local_dma_lkey; 287ed082d36SChristoph Hellwig else 288ed082d36SChristoph Hellwig mr_access_flags |= IB_ACCESS_LOCAL_WRITE; 289ed082d36SChristoph Hellwig 290ed082d36SChristoph Hellwig if (flags & IB_PD_UNSAFE_GLOBAL_RKEY) { 291ed082d36SChristoph Hellwig pr_warn("%s: enabling unsafe global rkey\n", caller); 292ed082d36SChristoph Hellwig mr_access_flags |= IB_ACCESS_REMOTE_READ | IB_ACCESS_REMOTE_WRITE; 293ed082d36SChristoph Hellwig } 294ed082d36SChristoph Hellwig 295ed082d36SChristoph Hellwig if (mr_access_flags) { 29696249d70SJason Gunthorpe struct ib_mr *mr; 29796249d70SJason Gunthorpe 2983023a1e9SKamal Heib mr = pd->device->ops.get_dma_mr(pd, mr_access_flags); 29996249d70SJason Gunthorpe if (IS_ERR(mr)) { 30096249d70SJason Gunthorpe ib_dealloc_pd(pd); 3015ef990f0SChristoph Hellwig return ERR_CAST(mr); 3021da177e4SLinus Torvalds } 3031da177e4SLinus Torvalds 3045ef990f0SChristoph Hellwig mr->device = pd->device; 3055ef990f0SChristoph Hellwig mr->pd = pd; 306a0bc099aSMax Gurtovoy mr->type = IB_MR_TYPE_DMA; 3075ef990f0SChristoph Hellwig mr->uobject = NULL; 3085ef990f0SChristoph Hellwig mr->need_inval = false; 3095ef990f0SChristoph Hellwig 31050d46335SChristoph Hellwig pd->__internal_mr = mr; 311ed082d36SChristoph Hellwig 312ed082d36SChristoph Hellwig if (!(device->attrs.device_cap_flags & IB_DEVICE_LOCAL_DMA_LKEY)) 31350d46335SChristoph Hellwig pd->local_dma_lkey = pd->__internal_mr->lkey; 314ed082d36SChristoph Hellwig 315ed082d36SChristoph Hellwig if (flags & IB_PD_UNSAFE_GLOBAL_RKEY) 316ed082d36SChristoph Hellwig pd->unsafe_global_rkey = pd->__internal_mr->rkey; 31796249d70SJason Gunthorpe } 318ed082d36SChristoph Hellwig 3191da177e4SLinus Torvalds return pd; 3201da177e4SLinus Torvalds } 321ed082d36SChristoph Hellwig EXPORT_SYMBOL(__ib_alloc_pd); 3221da177e4SLinus Torvalds 3237dd78647SJason Gunthorpe /** 32491f57129SIsrael Rukshin * ib_dealloc_pd_user - Deallocates a protection domain. 3257dd78647SJason Gunthorpe * @pd: The protection domain to deallocate. 326c4367a26SShamir Rabinovitch * @udata: Valid user data or NULL for kernel object 3277dd78647SJason Gunthorpe * 3287dd78647SJason Gunthorpe * It is an error to call this function while any resources in the pd still 3297dd78647SJason Gunthorpe * exist. The caller is responsible to synchronously destroy them and 3307dd78647SJason Gunthorpe * guarantee no new allocations will happen. 3317dd78647SJason Gunthorpe */ 332c4367a26SShamir Rabinovitch void ib_dealloc_pd_user(struct ib_pd *pd, struct ib_udata *udata) 3331da177e4SLinus Torvalds { 3347dd78647SJason Gunthorpe int ret; 3351da177e4SLinus Torvalds 33650d46335SChristoph Hellwig if (pd->__internal_mr) { 337c4367a26SShamir Rabinovitch ret = pd->device->ops.dereg_mr(pd->__internal_mr, NULL); 3387dd78647SJason Gunthorpe WARN_ON(ret); 33950d46335SChristoph Hellwig pd->__internal_mr = NULL; 34096249d70SJason Gunthorpe } 34196249d70SJason Gunthorpe 3427dd78647SJason Gunthorpe /* uverbs manipulates usecnt with proper locking, while the kabi 3437dd78647SJason Gunthorpe requires the caller to guarantee we can't race here. */ 3447dd78647SJason Gunthorpe WARN_ON(atomic_read(&pd->usecnt)); 3451da177e4SLinus Torvalds 3469d5f8c20SLeon Romanovsky rdma_restrack_del(&pd->res); 347c4367a26SShamir Rabinovitch pd->device->ops.dealloc_pd(pd, udata); 34821a428a0SLeon Romanovsky kfree(pd); 3491da177e4SLinus Torvalds } 350c4367a26SShamir Rabinovitch EXPORT_SYMBOL(ib_dealloc_pd_user); 3511da177e4SLinus Torvalds 3521da177e4SLinus Torvalds /* Address handles */ 3531da177e4SLinus Torvalds 354d97099feSJason Gunthorpe /** 355d97099feSJason Gunthorpe * rdma_copy_ah_attr - Copy rdma ah attribute from source to destination. 356d97099feSJason Gunthorpe * @dest: Pointer to destination ah_attr. Contents of the destination 357d97099feSJason Gunthorpe * pointer is assumed to be invalid and attribute are overwritten. 358d97099feSJason Gunthorpe * @src: Pointer to source ah_attr. 359d97099feSJason Gunthorpe */ 360d97099feSJason Gunthorpe void rdma_copy_ah_attr(struct rdma_ah_attr *dest, 361d97099feSJason Gunthorpe const struct rdma_ah_attr *src) 362d97099feSJason Gunthorpe { 363d97099feSJason Gunthorpe *dest = *src; 364d97099feSJason Gunthorpe if (dest->grh.sgid_attr) 365d97099feSJason Gunthorpe rdma_hold_gid_attr(dest->grh.sgid_attr); 366d97099feSJason Gunthorpe } 367d97099feSJason Gunthorpe EXPORT_SYMBOL(rdma_copy_ah_attr); 368d97099feSJason Gunthorpe 369d97099feSJason Gunthorpe /** 370d97099feSJason Gunthorpe * rdma_replace_ah_attr - Replace valid ah_attr with new new one. 371d97099feSJason Gunthorpe * @old: Pointer to existing ah_attr which needs to be replaced. 372d97099feSJason Gunthorpe * old is assumed to be valid or zero'd 373d97099feSJason Gunthorpe * @new: Pointer to the new ah_attr. 374d97099feSJason Gunthorpe * 375d97099feSJason Gunthorpe * rdma_replace_ah_attr() first releases any reference in the old ah_attr if 376d97099feSJason Gunthorpe * old the ah_attr is valid; after that it copies the new attribute and holds 377d97099feSJason Gunthorpe * the reference to the replaced ah_attr. 378d97099feSJason Gunthorpe */ 379d97099feSJason Gunthorpe void rdma_replace_ah_attr(struct rdma_ah_attr *old, 380d97099feSJason Gunthorpe const struct rdma_ah_attr *new) 381d97099feSJason Gunthorpe { 382d97099feSJason Gunthorpe rdma_destroy_ah_attr(old); 383d97099feSJason Gunthorpe *old = *new; 384d97099feSJason Gunthorpe if (old->grh.sgid_attr) 385d97099feSJason Gunthorpe rdma_hold_gid_attr(old->grh.sgid_attr); 386d97099feSJason Gunthorpe } 387d97099feSJason Gunthorpe EXPORT_SYMBOL(rdma_replace_ah_attr); 388d97099feSJason Gunthorpe 389d97099feSJason Gunthorpe /** 390d97099feSJason Gunthorpe * rdma_move_ah_attr - Move ah_attr pointed by source to destination. 391d97099feSJason Gunthorpe * @dest: Pointer to destination ah_attr to copy to. 392d97099feSJason Gunthorpe * dest is assumed to be valid or zero'd 393d97099feSJason Gunthorpe * @src: Pointer to the new ah_attr. 394d97099feSJason Gunthorpe * 395d97099feSJason Gunthorpe * rdma_move_ah_attr() first releases any reference in the destination ah_attr 396d97099feSJason Gunthorpe * if it is valid. This also transfers ownership of internal references from 397d97099feSJason Gunthorpe * src to dest, making src invalid in the process. No new reference of the src 398d97099feSJason Gunthorpe * ah_attr is taken. 399d97099feSJason Gunthorpe */ 400d97099feSJason Gunthorpe void rdma_move_ah_attr(struct rdma_ah_attr *dest, struct rdma_ah_attr *src) 401d97099feSJason Gunthorpe { 402d97099feSJason Gunthorpe rdma_destroy_ah_attr(dest); 403d97099feSJason Gunthorpe *dest = *src; 404d97099feSJason Gunthorpe src->grh.sgid_attr = NULL; 405d97099feSJason Gunthorpe } 406d97099feSJason Gunthorpe EXPORT_SYMBOL(rdma_move_ah_attr); 407d97099feSJason Gunthorpe 4088d9ec9adSJason Gunthorpe /* 4098d9ec9adSJason Gunthorpe * Validate that the rdma_ah_attr is valid for the device before passing it 4108d9ec9adSJason Gunthorpe * off to the driver. 4118d9ec9adSJason Gunthorpe */ 4128d9ec9adSJason Gunthorpe static int rdma_check_ah_attr(struct ib_device *device, 4138d9ec9adSJason Gunthorpe struct rdma_ah_attr *ah_attr) 4148d9ec9adSJason Gunthorpe { 4158d9ec9adSJason Gunthorpe if (!rdma_is_port_valid(device, ah_attr->port_num)) 4168d9ec9adSJason Gunthorpe return -EINVAL; 4178d9ec9adSJason Gunthorpe 418b02289b3SArtemy Kovalyov if ((rdma_is_grh_required(device, ah_attr->port_num) || 419b02289b3SArtemy Kovalyov ah_attr->type == RDMA_AH_ATTR_TYPE_ROCE) && 4208d9ec9adSJason Gunthorpe !(ah_attr->ah_flags & IB_AH_GRH)) 4218d9ec9adSJason Gunthorpe return -EINVAL; 4228d9ec9adSJason Gunthorpe 4238d9ec9adSJason Gunthorpe if (ah_attr->grh.sgid_attr) { 4248d9ec9adSJason Gunthorpe /* 4258d9ec9adSJason Gunthorpe * Make sure the passed sgid_attr is consistent with the 4268d9ec9adSJason Gunthorpe * parameters 4278d9ec9adSJason Gunthorpe */ 4288d9ec9adSJason Gunthorpe if (ah_attr->grh.sgid_attr->index != ah_attr->grh.sgid_index || 4298d9ec9adSJason Gunthorpe ah_attr->grh.sgid_attr->port_num != ah_attr->port_num) 4308d9ec9adSJason Gunthorpe return -EINVAL; 4318d9ec9adSJason Gunthorpe } 4328d9ec9adSJason Gunthorpe return 0; 4338d9ec9adSJason Gunthorpe } 4348d9ec9adSJason Gunthorpe 4358d9ec9adSJason Gunthorpe /* 4368d9ec9adSJason Gunthorpe * If the ah requires a GRH then ensure that sgid_attr pointer is filled in. 4378d9ec9adSJason Gunthorpe * On success the caller is responsible to call rdma_unfill_sgid_attr(). 4388d9ec9adSJason Gunthorpe */ 4398d9ec9adSJason Gunthorpe static int rdma_fill_sgid_attr(struct ib_device *device, 4408d9ec9adSJason Gunthorpe struct rdma_ah_attr *ah_attr, 4418d9ec9adSJason Gunthorpe const struct ib_gid_attr **old_sgid_attr) 4428d9ec9adSJason Gunthorpe { 4438d9ec9adSJason Gunthorpe const struct ib_gid_attr *sgid_attr; 4448d9ec9adSJason Gunthorpe struct ib_global_route *grh; 4458d9ec9adSJason Gunthorpe int ret; 4468d9ec9adSJason Gunthorpe 4478d9ec9adSJason Gunthorpe *old_sgid_attr = ah_attr->grh.sgid_attr; 4488d9ec9adSJason Gunthorpe 4498d9ec9adSJason Gunthorpe ret = rdma_check_ah_attr(device, ah_attr); 4508d9ec9adSJason Gunthorpe if (ret) 4518d9ec9adSJason Gunthorpe return ret; 4528d9ec9adSJason Gunthorpe 4538d9ec9adSJason Gunthorpe if (!(ah_attr->ah_flags & IB_AH_GRH)) 4548d9ec9adSJason Gunthorpe return 0; 4558d9ec9adSJason Gunthorpe 4568d9ec9adSJason Gunthorpe grh = rdma_ah_retrieve_grh(ah_attr); 4578d9ec9adSJason Gunthorpe if (grh->sgid_attr) 4588d9ec9adSJason Gunthorpe return 0; 4598d9ec9adSJason Gunthorpe 4608d9ec9adSJason Gunthorpe sgid_attr = 4618d9ec9adSJason Gunthorpe rdma_get_gid_attr(device, ah_attr->port_num, grh->sgid_index); 4628d9ec9adSJason Gunthorpe if (IS_ERR(sgid_attr)) 4638d9ec9adSJason Gunthorpe return PTR_ERR(sgid_attr); 4648d9ec9adSJason Gunthorpe 4658d9ec9adSJason Gunthorpe /* Move ownerhip of the kref into the ah_attr */ 4668d9ec9adSJason Gunthorpe grh->sgid_attr = sgid_attr; 4678d9ec9adSJason Gunthorpe return 0; 4688d9ec9adSJason Gunthorpe } 4698d9ec9adSJason Gunthorpe 4708d9ec9adSJason Gunthorpe static void rdma_unfill_sgid_attr(struct rdma_ah_attr *ah_attr, 4718d9ec9adSJason Gunthorpe const struct ib_gid_attr *old_sgid_attr) 4728d9ec9adSJason Gunthorpe { 4738d9ec9adSJason Gunthorpe /* 4748d9ec9adSJason Gunthorpe * Fill didn't change anything, the caller retains ownership of 4758d9ec9adSJason Gunthorpe * whatever it passed 4768d9ec9adSJason Gunthorpe */ 4778d9ec9adSJason Gunthorpe if (ah_attr->grh.sgid_attr == old_sgid_attr) 4788d9ec9adSJason Gunthorpe return; 4798d9ec9adSJason Gunthorpe 4808d9ec9adSJason Gunthorpe /* 4818d9ec9adSJason Gunthorpe * Otherwise, we need to undo what rdma_fill_sgid_attr so the caller 4828d9ec9adSJason Gunthorpe * doesn't see any change in the rdma_ah_attr. If we get here 4838d9ec9adSJason Gunthorpe * old_sgid_attr is NULL. 4848d9ec9adSJason Gunthorpe */ 4858d9ec9adSJason Gunthorpe rdma_destroy_ah_attr(ah_attr); 4868d9ec9adSJason Gunthorpe } 4878d9ec9adSJason Gunthorpe 4881a1f460fSJason Gunthorpe static const struct ib_gid_attr * 4891a1f460fSJason Gunthorpe rdma_update_sgid_attr(struct rdma_ah_attr *ah_attr, 4901a1f460fSJason Gunthorpe const struct ib_gid_attr *old_attr) 4911a1f460fSJason Gunthorpe { 4921a1f460fSJason Gunthorpe if (old_attr) 4931a1f460fSJason Gunthorpe rdma_put_gid_attr(old_attr); 4941a1f460fSJason Gunthorpe if (ah_attr->ah_flags & IB_AH_GRH) { 4951a1f460fSJason Gunthorpe rdma_hold_gid_attr(ah_attr->grh.sgid_attr); 4961a1f460fSJason Gunthorpe return ah_attr->grh.sgid_attr; 4971a1f460fSJason Gunthorpe } 4981a1f460fSJason Gunthorpe return NULL; 4991a1f460fSJason Gunthorpe } 5001a1f460fSJason Gunthorpe 5015cda6587SParav Pandit static struct ib_ah *_rdma_create_ah(struct ib_pd *pd, 5025cda6587SParav Pandit struct rdma_ah_attr *ah_attr, 503b090c4e3SGal Pressman u32 flags, 5045cda6587SParav Pandit struct ib_udata *udata) 5051da177e4SLinus Torvalds { 506d3456914SLeon Romanovsky struct ib_device *device = pd->device; 5071da177e4SLinus Torvalds struct ib_ah *ah; 508d3456914SLeon Romanovsky int ret; 5091da177e4SLinus Torvalds 510b090c4e3SGal Pressman might_sleep_if(flags & RDMA_CREATE_AH_SLEEPABLE); 511b090c4e3SGal Pressman 512d3456914SLeon Romanovsky if (!device->ops.create_ah) 5130584c47bSKamal Heib return ERR_PTR(-EOPNOTSUPP); 5140584c47bSKamal Heib 515d3456914SLeon Romanovsky ah = rdma_zalloc_drv_obj_gfp( 516d3456914SLeon Romanovsky device, ib_ah, 517d3456914SLeon Romanovsky (flags & RDMA_CREATE_AH_SLEEPABLE) ? GFP_KERNEL : GFP_ATOMIC); 518d3456914SLeon Romanovsky if (!ah) 519d3456914SLeon Romanovsky return ERR_PTR(-ENOMEM); 5201da177e4SLinus Torvalds 521d3456914SLeon Romanovsky ah->device = device; 5221da177e4SLinus Torvalds ah->pd = pd; 52344c58487SDasaratharaman Chandramouli ah->type = ah_attr->type; 5241a1f460fSJason Gunthorpe ah->sgid_attr = rdma_update_sgid_attr(ah_attr, NULL); 5251a1f460fSJason Gunthorpe 526d3456914SLeon Romanovsky ret = device->ops.create_ah(ah, ah_attr, flags, udata); 527d3456914SLeon Romanovsky if (ret) { 528d3456914SLeon Romanovsky kfree(ah); 529d3456914SLeon Romanovsky return ERR_PTR(ret); 5301da177e4SLinus Torvalds } 5311da177e4SLinus Torvalds 532d3456914SLeon Romanovsky atomic_inc(&pd->usecnt); 5331da177e4SLinus Torvalds return ah; 5341da177e4SLinus Torvalds } 5355cda6587SParav Pandit 5368d9ec9adSJason Gunthorpe /** 5378d9ec9adSJason Gunthorpe * rdma_create_ah - Creates an address handle for the 5388d9ec9adSJason Gunthorpe * given address vector. 5398d9ec9adSJason Gunthorpe * @pd: The protection domain associated with the address handle. 5408d9ec9adSJason Gunthorpe * @ah_attr: The attributes of the address vector. 541b090c4e3SGal Pressman * @flags: Create address handle flags (see enum rdma_create_ah_flags). 5428d9ec9adSJason Gunthorpe * 5438d9ec9adSJason Gunthorpe * It returns 0 on success and returns appropriate error code on error. 5448d9ec9adSJason Gunthorpe * The address handle is used to reference a local or global destination 5458d9ec9adSJason Gunthorpe * in all UD QP post sends. 5468d9ec9adSJason Gunthorpe */ 547b090c4e3SGal Pressman struct ib_ah *rdma_create_ah(struct ib_pd *pd, struct rdma_ah_attr *ah_attr, 548b090c4e3SGal Pressman u32 flags) 5495cda6587SParav Pandit { 5508d9ec9adSJason Gunthorpe const struct ib_gid_attr *old_sgid_attr; 5518d9ec9adSJason Gunthorpe struct ib_ah *ah; 5528d9ec9adSJason Gunthorpe int ret; 5538d9ec9adSJason Gunthorpe 5548d9ec9adSJason Gunthorpe ret = rdma_fill_sgid_attr(pd->device, ah_attr, &old_sgid_attr); 5558d9ec9adSJason Gunthorpe if (ret) 5568d9ec9adSJason Gunthorpe return ERR_PTR(ret); 5578d9ec9adSJason Gunthorpe 558b090c4e3SGal Pressman ah = _rdma_create_ah(pd, ah_attr, flags, NULL); 5598d9ec9adSJason Gunthorpe 5608d9ec9adSJason Gunthorpe rdma_unfill_sgid_attr(ah_attr, old_sgid_attr); 5618d9ec9adSJason Gunthorpe return ah; 5625cda6587SParav Pandit } 5630a18cfe4SDasaratharaman Chandramouli EXPORT_SYMBOL(rdma_create_ah); 5641da177e4SLinus Torvalds 5655cda6587SParav Pandit /** 5665cda6587SParav Pandit * rdma_create_user_ah - Creates an address handle for the 5675cda6587SParav Pandit * given address vector. 5685cda6587SParav Pandit * It resolves destination mac address for ah attribute of RoCE type. 5695cda6587SParav Pandit * @pd: The protection domain associated with the address handle. 5705cda6587SParav Pandit * @ah_attr: The attributes of the address vector. 5715cda6587SParav Pandit * @udata: pointer to user's input output buffer information need by 5725cda6587SParav Pandit * provider driver. 5735cda6587SParav Pandit * 5745cda6587SParav Pandit * It returns 0 on success and returns appropriate error code on error. 5755cda6587SParav Pandit * The address handle is used to reference a local or global destination 5765cda6587SParav Pandit * in all UD QP post sends. 5775cda6587SParav Pandit */ 5785cda6587SParav Pandit struct ib_ah *rdma_create_user_ah(struct ib_pd *pd, 5795cda6587SParav Pandit struct rdma_ah_attr *ah_attr, 5805cda6587SParav Pandit struct ib_udata *udata) 5815cda6587SParav Pandit { 5828d9ec9adSJason Gunthorpe const struct ib_gid_attr *old_sgid_attr; 5838d9ec9adSJason Gunthorpe struct ib_ah *ah; 5845cda6587SParav Pandit int err; 5855cda6587SParav Pandit 5868d9ec9adSJason Gunthorpe err = rdma_fill_sgid_attr(pd->device, ah_attr, &old_sgid_attr); 5878d9ec9adSJason Gunthorpe if (err) 5888d9ec9adSJason Gunthorpe return ERR_PTR(err); 5898d9ec9adSJason Gunthorpe 5905cda6587SParav Pandit if (ah_attr->type == RDMA_AH_ATTR_TYPE_ROCE) { 5915cda6587SParav Pandit err = ib_resolve_eth_dmac(pd->device, ah_attr); 5928d9ec9adSJason Gunthorpe if (err) { 5938d9ec9adSJason Gunthorpe ah = ERR_PTR(err); 5948d9ec9adSJason Gunthorpe goto out; 5958d9ec9adSJason Gunthorpe } 5965cda6587SParav Pandit } 5975cda6587SParav Pandit 598b090c4e3SGal Pressman ah = _rdma_create_ah(pd, ah_attr, RDMA_CREATE_AH_SLEEPABLE, udata); 5998d9ec9adSJason Gunthorpe 6008d9ec9adSJason Gunthorpe out: 6018d9ec9adSJason Gunthorpe rdma_unfill_sgid_attr(ah_attr, old_sgid_attr); 6028d9ec9adSJason Gunthorpe return ah; 6035cda6587SParav Pandit } 6045cda6587SParav Pandit EXPORT_SYMBOL(rdma_create_user_ah); 6055cda6587SParav Pandit 606850d8fd7SMoni Shoua int ib_get_rdma_header_version(const union rdma_network_hdr *hdr) 607c865f246SSomnath Kotur { 608c865f246SSomnath Kotur const struct iphdr *ip4h = (struct iphdr *)&hdr->roce4grh; 609c865f246SSomnath Kotur struct iphdr ip4h_checked; 610c865f246SSomnath Kotur const struct ipv6hdr *ip6h = (struct ipv6hdr *)&hdr->ibgrh; 611c865f246SSomnath Kotur 612c865f246SSomnath Kotur /* If it's IPv6, the version must be 6, otherwise, the first 613c865f246SSomnath Kotur * 20 bytes (before the IPv4 header) are garbled. 614c865f246SSomnath Kotur */ 615c865f246SSomnath Kotur if (ip6h->version != 6) 616c865f246SSomnath Kotur return (ip4h->version == 4) ? 4 : 0; 617c865f246SSomnath Kotur /* version may be 6 or 4 because the first 20 bytes could be garbled */ 618c865f246SSomnath Kotur 619c865f246SSomnath Kotur /* RoCE v2 requires no options, thus header length 620c865f246SSomnath Kotur * must be 5 words 621c865f246SSomnath Kotur */ 622c865f246SSomnath Kotur if (ip4h->ihl != 5) 623c865f246SSomnath Kotur return 6; 624c865f246SSomnath Kotur 625c865f246SSomnath Kotur /* Verify checksum. 626c865f246SSomnath Kotur * We can't write on scattered buffers so we need to copy to 627c865f246SSomnath Kotur * temp buffer. 628c865f246SSomnath Kotur */ 629c865f246SSomnath Kotur memcpy(&ip4h_checked, ip4h, sizeof(ip4h_checked)); 630c865f246SSomnath Kotur ip4h_checked.check = 0; 631c865f246SSomnath Kotur ip4h_checked.check = ip_fast_csum((u8 *)&ip4h_checked, 5); 632c865f246SSomnath Kotur /* if IPv4 header checksum is OK, believe it */ 633c865f246SSomnath Kotur if (ip4h->check == ip4h_checked.check) 634c865f246SSomnath Kotur return 4; 635c865f246SSomnath Kotur return 6; 636c865f246SSomnath Kotur } 637850d8fd7SMoni Shoua EXPORT_SYMBOL(ib_get_rdma_header_version); 638c865f246SSomnath Kotur 639c865f246SSomnath Kotur static enum rdma_network_type ib_get_net_type_by_grh(struct ib_device *device, 640c865f246SSomnath Kotur u8 port_num, 641c865f246SSomnath Kotur const struct ib_grh *grh) 642c865f246SSomnath Kotur { 643c865f246SSomnath Kotur int grh_version; 644c865f246SSomnath Kotur 645c865f246SSomnath Kotur if (rdma_protocol_ib(device, port_num)) 646c865f246SSomnath Kotur return RDMA_NETWORK_IB; 647c865f246SSomnath Kotur 648850d8fd7SMoni Shoua grh_version = ib_get_rdma_header_version((union rdma_network_hdr *)grh); 649c865f246SSomnath Kotur 650c865f246SSomnath Kotur if (grh_version == 4) 651c865f246SSomnath Kotur return RDMA_NETWORK_IPV4; 652c865f246SSomnath Kotur 653c865f246SSomnath Kotur if (grh->next_hdr == IPPROTO_UDP) 654c865f246SSomnath Kotur return RDMA_NETWORK_IPV6; 655c865f246SSomnath Kotur 656c865f246SSomnath Kotur return RDMA_NETWORK_ROCE_V1; 657c865f246SSomnath Kotur } 658c865f246SSomnath Kotur 659dbf727deSMatan Barak struct find_gid_index_context { 660dbf727deSMatan Barak u16 vlan_id; 661c865f246SSomnath Kotur enum ib_gid_type gid_type; 662dbf727deSMatan Barak }; 663dbf727deSMatan Barak 664dbf727deSMatan Barak static bool find_gid_index(const union ib_gid *gid, 665dbf727deSMatan Barak const struct ib_gid_attr *gid_attr, 666dbf727deSMatan Barak void *context) 667dbf727deSMatan Barak { 668b0dd0d33SParav Pandit struct find_gid_index_context *ctx = context; 669777a8b32SParav Pandit u16 vlan_id = 0xffff; 670777a8b32SParav Pandit int ret; 671dbf727deSMatan Barak 672c865f246SSomnath Kotur if (ctx->gid_type != gid_attr->gid_type) 673c865f246SSomnath Kotur return false; 674c865f246SSomnath Kotur 675777a8b32SParav Pandit ret = rdma_read_gid_l2_fields(gid_attr, &vlan_id, NULL); 676777a8b32SParav Pandit if (ret) 677dbf727deSMatan Barak return false; 678dbf727deSMatan Barak 679777a8b32SParav Pandit return ctx->vlan_id == vlan_id; 680dbf727deSMatan Barak } 681dbf727deSMatan Barak 682b7403217SParav Pandit static const struct ib_gid_attr * 683b7403217SParav Pandit get_sgid_attr_from_eth(struct ib_device *device, u8 port_num, 684dbf727deSMatan Barak u16 vlan_id, const union ib_gid *sgid, 685b7403217SParav Pandit enum ib_gid_type gid_type) 686dbf727deSMatan Barak { 687c865f246SSomnath Kotur struct find_gid_index_context context = {.vlan_id = vlan_id, 688c865f246SSomnath Kotur .gid_type = gid_type}; 689dbf727deSMatan Barak 690b7403217SParav Pandit return rdma_find_gid_by_filter(device, sgid, port_num, find_gid_index, 691b7403217SParav Pandit &context); 692dbf727deSMatan Barak } 693dbf727deSMatan Barak 694850d8fd7SMoni Shoua int ib_get_gids_from_rdma_hdr(const union rdma_network_hdr *hdr, 695c865f246SSomnath Kotur enum rdma_network_type net_type, 696c865f246SSomnath Kotur union ib_gid *sgid, union ib_gid *dgid) 697c865f246SSomnath Kotur { 698c865f246SSomnath Kotur struct sockaddr_in src_in; 699c865f246SSomnath Kotur struct sockaddr_in dst_in; 700c865f246SSomnath Kotur __be32 src_saddr, dst_saddr; 701c865f246SSomnath Kotur 702c865f246SSomnath Kotur if (!sgid || !dgid) 703c865f246SSomnath Kotur return -EINVAL; 704c865f246SSomnath Kotur 705c865f246SSomnath Kotur if (net_type == RDMA_NETWORK_IPV4) { 706c865f246SSomnath Kotur memcpy(&src_in.sin_addr.s_addr, 707c865f246SSomnath Kotur &hdr->roce4grh.saddr, 4); 708c865f246SSomnath Kotur memcpy(&dst_in.sin_addr.s_addr, 709c865f246SSomnath Kotur &hdr->roce4grh.daddr, 4); 710c865f246SSomnath Kotur src_saddr = src_in.sin_addr.s_addr; 711c865f246SSomnath Kotur dst_saddr = dst_in.sin_addr.s_addr; 712c865f246SSomnath Kotur ipv6_addr_set_v4mapped(src_saddr, 713c865f246SSomnath Kotur (struct in6_addr *)sgid); 714c865f246SSomnath Kotur ipv6_addr_set_v4mapped(dst_saddr, 715c865f246SSomnath Kotur (struct in6_addr *)dgid); 716c865f246SSomnath Kotur return 0; 717c865f246SSomnath Kotur } else if (net_type == RDMA_NETWORK_IPV6 || 718c865f246SSomnath Kotur net_type == RDMA_NETWORK_IB) { 719c865f246SSomnath Kotur *dgid = hdr->ibgrh.dgid; 720c865f246SSomnath Kotur *sgid = hdr->ibgrh.sgid; 721c865f246SSomnath Kotur return 0; 722c865f246SSomnath Kotur } else { 723c865f246SSomnath Kotur return -EINVAL; 724c865f246SSomnath Kotur } 725c865f246SSomnath Kotur } 726850d8fd7SMoni Shoua EXPORT_SYMBOL(ib_get_gids_from_rdma_hdr); 727c865f246SSomnath Kotur 7281060f865SParav Pandit /* Resolve destination mac address and hop limit for unicast destination 7291060f865SParav Pandit * GID entry, considering the source GID entry as well. 7301060f865SParav Pandit * ah_attribute must have have valid port_num, sgid_index. 7311060f865SParav Pandit */ 7321060f865SParav Pandit static int ib_resolve_unicast_gid_dmac(struct ib_device *device, 7331060f865SParav Pandit struct rdma_ah_attr *ah_attr) 7341060f865SParav Pandit { 735b7403217SParav Pandit struct ib_global_route *grh = rdma_ah_retrieve_grh(ah_attr); 736b7403217SParav Pandit const struct ib_gid_attr *sgid_attr = grh->sgid_attr; 7371060f865SParav Pandit int hop_limit = 0xff; 738b7403217SParav Pandit int ret = 0; 7391060f865SParav Pandit 74056d0a7d9SParav Pandit /* If destination is link local and source GID is RoCEv1, 74156d0a7d9SParav Pandit * IP stack is not used. 74256d0a7d9SParav Pandit */ 74356d0a7d9SParav Pandit if (rdma_link_local_addr((struct in6_addr *)grh->dgid.raw) && 744b7403217SParav Pandit sgid_attr->gid_type == IB_GID_TYPE_ROCE) { 74556d0a7d9SParav Pandit rdma_get_ll_mac((struct in6_addr *)grh->dgid.raw, 74656d0a7d9SParav Pandit ah_attr->roce.dmac); 747b7403217SParav Pandit return ret; 74856d0a7d9SParav Pandit } 74956d0a7d9SParav Pandit 750b7403217SParav Pandit ret = rdma_addr_find_l2_eth_by_grh(&sgid_attr->gid, &grh->dgid, 7511060f865SParav Pandit ah_attr->roce.dmac, 7520e9d2c19SParav Pandit sgid_attr, &hop_limit); 7531060f865SParav Pandit 7541060f865SParav Pandit grh->hop_limit = hop_limit; 7551060f865SParav Pandit return ret; 7561060f865SParav Pandit } 7571060f865SParav Pandit 75828b5b3a2SGustavo A. R. Silva /* 759f6bdb142SParav Pandit * This function initializes address handle attributes from the incoming packet. 76028b5b3a2SGustavo A. R. Silva * Incoming packet has dgid of the receiver node on which this code is 76128b5b3a2SGustavo A. R. Silva * getting executed and, sgid contains the GID of the sender. 76228b5b3a2SGustavo A. R. Silva * 76328b5b3a2SGustavo A. R. Silva * When resolving mac address of destination, the arrived dgid is used 76428b5b3a2SGustavo A. R. Silva * as sgid and, sgid is used as dgid because sgid contains destinations 76528b5b3a2SGustavo A. R. Silva * GID whom to respond to. 76628b5b3a2SGustavo A. R. Silva * 767b7403217SParav Pandit * On success the caller is responsible to call rdma_destroy_ah_attr on the 768b7403217SParav Pandit * attr. 76928b5b3a2SGustavo A. R. Silva */ 770f6bdb142SParav Pandit int ib_init_ah_attr_from_wc(struct ib_device *device, u8 port_num, 77173cdaaeeSIra Weiny const struct ib_wc *wc, const struct ib_grh *grh, 77290898850SDasaratharaman Chandramouli struct rdma_ah_attr *ah_attr) 773513789edSHal Rosenstock { 774513789edSHal Rosenstock u32 flow_class; 775513789edSHal Rosenstock int ret; 776c865f246SSomnath Kotur enum rdma_network_type net_type = RDMA_NETWORK_IB; 777c865f246SSomnath Kotur enum ib_gid_type gid_type = IB_GID_TYPE_IB; 778b7403217SParav Pandit const struct ib_gid_attr *sgid_attr; 779c3efe750SMatan Barak int hoplimit = 0xff; 780c865f246SSomnath Kotur union ib_gid dgid; 781c865f246SSomnath Kotur union ib_gid sgid; 782513789edSHal Rosenstock 78379364227SRoland Dreier might_sleep(); 78479364227SRoland Dreier 7854e00d694SSean Hefty memset(ah_attr, 0, sizeof *ah_attr); 78644c58487SDasaratharaman Chandramouli ah_attr->type = rdma_ah_find_type(device, port_num); 787227128fcSMichael Wang if (rdma_cap_eth_ah(device, port_num)) { 788c865f246SSomnath Kotur if (wc->wc_flags & IB_WC_WITH_NETWORK_HDR_TYPE) 789c865f246SSomnath Kotur net_type = wc->network_hdr_type; 790c865f246SSomnath Kotur else 791c865f246SSomnath Kotur net_type = ib_get_net_type_by_grh(device, port_num, grh); 792c865f246SSomnath Kotur gid_type = ib_network_to_gid_type(net_type); 793c865f246SSomnath Kotur } 794850d8fd7SMoni Shoua ret = ib_get_gids_from_rdma_hdr((union rdma_network_hdr *)grh, net_type, 795c865f246SSomnath Kotur &sgid, &dgid); 796c865f246SSomnath Kotur if (ret) 797c865f246SSomnath Kotur return ret; 798c865f246SSomnath Kotur 7991060f865SParav Pandit rdma_ah_set_sl(ah_attr, wc->sl); 8001060f865SParav Pandit rdma_ah_set_port_num(ah_attr, port_num); 8011060f865SParav Pandit 802c865f246SSomnath Kotur if (rdma_protocol_roce(device, port_num)) { 803dbf727deSMatan Barak u16 vlan_id = wc->wc_flags & IB_WC_WITH_VLAN ? 804dbf727deSMatan Barak wc->vlan_id : 0xffff; 805dbf727deSMatan Barak 806dd5f03beSMatan Barak if (!(wc->wc_flags & IB_WC_GRH)) 807dd5f03beSMatan Barak return -EPROTOTYPE; 808dd5f03beSMatan Barak 809b7403217SParav Pandit sgid_attr = get_sgid_attr_from_eth(device, port_num, 8101060f865SParav Pandit vlan_id, &dgid, 811b7403217SParav Pandit gid_type); 812b7403217SParav Pandit if (IS_ERR(sgid_attr)) 813b7403217SParav Pandit return PTR_ERR(sgid_attr); 81420029832SMatan Barak 8151060f865SParav Pandit flow_class = be32_to_cpu(grh->version_tclass_flow); 816b7403217SParav Pandit rdma_move_grh_sgid_attr(ah_attr, 817b7403217SParav Pandit &sgid, 8181060f865SParav Pandit flow_class & 0xFFFFF, 819b7403217SParav Pandit hoplimit, 820b7403217SParav Pandit (flow_class >> 20) & 0xFF, 821b7403217SParav Pandit sgid_attr); 822b7403217SParav Pandit 823b7403217SParav Pandit ret = ib_resolve_unicast_gid_dmac(device, ah_attr); 824b7403217SParav Pandit if (ret) 825b7403217SParav Pandit rdma_destroy_ah_attr(ah_attr); 826b7403217SParav Pandit 827b7403217SParav Pandit return ret; 8281060f865SParav Pandit } else { 829d8966fcdSDasaratharaman Chandramouli rdma_ah_set_dlid(ah_attr, wc->slid); 830d8966fcdSDasaratharaman Chandramouli rdma_ah_set_path_bits(ah_attr, wc->dlid_path_bits); 831513789edSHal Rosenstock 832b7403217SParav Pandit if ((wc->wc_flags & IB_WC_GRH) == 0) 833b7403217SParav Pandit return 0; 834513789edSHal Rosenstock 835b7403217SParav Pandit if (dgid.global.interface_id != 836b7403217SParav Pandit cpu_to_be64(IB_SA_WELL_KNOWN_GUID)) { 837b7403217SParav Pandit sgid_attr = rdma_find_gid_by_port( 838b7403217SParav Pandit device, &dgid, IB_GID_TYPE_IB, port_num, NULL); 839b7403217SParav Pandit } else 840b7403217SParav Pandit sgid_attr = rdma_get_gid_attr(device, port_num, 0); 841b7403217SParav Pandit 842b7403217SParav Pandit if (IS_ERR(sgid_attr)) 843b7403217SParav Pandit return PTR_ERR(sgid_attr); 844497677abSHal Rosenstock flow_class = be32_to_cpu(grh->version_tclass_flow); 845b7403217SParav Pandit rdma_move_grh_sgid_attr(ah_attr, 846b7403217SParav Pandit &sgid, 847d8966fcdSDasaratharaman Chandramouli flow_class & 0xFFFFF, 848b7403217SParav Pandit hoplimit, 849b7403217SParav Pandit (flow_class >> 20) & 0xFF, 850b7403217SParav Pandit sgid_attr); 851b7403217SParav Pandit 8524e00d694SSean Hefty return 0; 8534e00d694SSean Hefty } 8541060f865SParav Pandit } 855f6bdb142SParav Pandit EXPORT_SYMBOL(ib_init_ah_attr_from_wc); 8564e00d694SSean Hefty 8578d9ec9adSJason Gunthorpe /** 8588d9ec9adSJason Gunthorpe * rdma_move_grh_sgid_attr - Sets the sgid attribute of GRH, taking ownership 8598d9ec9adSJason Gunthorpe * of the reference 8608d9ec9adSJason Gunthorpe * 8618d9ec9adSJason Gunthorpe * @attr: Pointer to AH attribute structure 8628d9ec9adSJason Gunthorpe * @dgid: Destination GID 8638d9ec9adSJason Gunthorpe * @flow_label: Flow label 8648d9ec9adSJason Gunthorpe * @hop_limit: Hop limit 8658d9ec9adSJason Gunthorpe * @traffic_class: traffic class 8668d9ec9adSJason Gunthorpe * @sgid_attr: Pointer to SGID attribute 8678d9ec9adSJason Gunthorpe * 8688d9ec9adSJason Gunthorpe * This takes ownership of the sgid_attr reference. The caller must ensure 8698d9ec9adSJason Gunthorpe * rdma_destroy_ah_attr() is called before destroying the rdma_ah_attr after 8708d9ec9adSJason Gunthorpe * calling this function. 8718d9ec9adSJason Gunthorpe */ 8728d9ec9adSJason Gunthorpe void rdma_move_grh_sgid_attr(struct rdma_ah_attr *attr, union ib_gid *dgid, 8738d9ec9adSJason Gunthorpe u32 flow_label, u8 hop_limit, u8 traffic_class, 8748d9ec9adSJason Gunthorpe const struct ib_gid_attr *sgid_attr) 8758d9ec9adSJason Gunthorpe { 8768d9ec9adSJason Gunthorpe rdma_ah_set_grh(attr, dgid, flow_label, sgid_attr->index, hop_limit, 8778d9ec9adSJason Gunthorpe traffic_class); 8788d9ec9adSJason Gunthorpe attr->grh.sgid_attr = sgid_attr; 8798d9ec9adSJason Gunthorpe } 8808d9ec9adSJason Gunthorpe EXPORT_SYMBOL(rdma_move_grh_sgid_attr); 8818d9ec9adSJason Gunthorpe 8828d9ec9adSJason Gunthorpe /** 8838d9ec9adSJason Gunthorpe * rdma_destroy_ah_attr - Release reference to SGID attribute of 8848d9ec9adSJason Gunthorpe * ah attribute. 8858d9ec9adSJason Gunthorpe * @ah_attr: Pointer to ah attribute 8868d9ec9adSJason Gunthorpe * 8878d9ec9adSJason Gunthorpe * Release reference to the SGID attribute of the ah attribute if it is 8888d9ec9adSJason Gunthorpe * non NULL. It is safe to call this multiple times, and safe to call it on 8898d9ec9adSJason Gunthorpe * a zero initialized ah_attr. 8908d9ec9adSJason Gunthorpe */ 8918d9ec9adSJason Gunthorpe void rdma_destroy_ah_attr(struct rdma_ah_attr *ah_attr) 8928d9ec9adSJason Gunthorpe { 8938d9ec9adSJason Gunthorpe if (ah_attr->grh.sgid_attr) { 8948d9ec9adSJason Gunthorpe rdma_put_gid_attr(ah_attr->grh.sgid_attr); 8958d9ec9adSJason Gunthorpe ah_attr->grh.sgid_attr = NULL; 8968d9ec9adSJason Gunthorpe } 8978d9ec9adSJason Gunthorpe } 8988d9ec9adSJason Gunthorpe EXPORT_SYMBOL(rdma_destroy_ah_attr); 8998d9ec9adSJason Gunthorpe 90073cdaaeeSIra Weiny struct ib_ah *ib_create_ah_from_wc(struct ib_pd *pd, const struct ib_wc *wc, 90173cdaaeeSIra Weiny const struct ib_grh *grh, u8 port_num) 9024e00d694SSean Hefty { 90390898850SDasaratharaman Chandramouli struct rdma_ah_attr ah_attr; 904b7403217SParav Pandit struct ib_ah *ah; 9054e00d694SSean Hefty int ret; 9064e00d694SSean Hefty 907f6bdb142SParav Pandit ret = ib_init_ah_attr_from_wc(pd->device, port_num, wc, grh, &ah_attr); 9084e00d694SSean Hefty if (ret) 9094e00d694SSean Hefty return ERR_PTR(ret); 910513789edSHal Rosenstock 911b090c4e3SGal Pressman ah = rdma_create_ah(pd, &ah_attr, RDMA_CREATE_AH_SLEEPABLE); 912b7403217SParav Pandit 913b7403217SParav Pandit rdma_destroy_ah_attr(&ah_attr); 914b7403217SParav Pandit return ah; 915513789edSHal Rosenstock } 916513789edSHal Rosenstock EXPORT_SYMBOL(ib_create_ah_from_wc); 917513789edSHal Rosenstock 91867b985b6SDasaratharaman Chandramouli int rdma_modify_ah(struct ib_ah *ah, struct rdma_ah_attr *ah_attr) 9191da177e4SLinus Torvalds { 9208d9ec9adSJason Gunthorpe const struct ib_gid_attr *old_sgid_attr; 9218d9ec9adSJason Gunthorpe int ret; 9228d9ec9adSJason Gunthorpe 92344c58487SDasaratharaman Chandramouli if (ah->type != ah_attr->type) 92444c58487SDasaratharaman Chandramouli return -EINVAL; 92544c58487SDasaratharaman Chandramouli 9268d9ec9adSJason Gunthorpe ret = rdma_fill_sgid_attr(ah->device, ah_attr, &old_sgid_attr); 9278d9ec9adSJason Gunthorpe if (ret) 9288d9ec9adSJason Gunthorpe return ret; 9298d9ec9adSJason Gunthorpe 9303023a1e9SKamal Heib ret = ah->device->ops.modify_ah ? 9313023a1e9SKamal Heib ah->device->ops.modify_ah(ah, ah_attr) : 93287915bf8SLeon Romanovsky -EOPNOTSUPP; 9338d9ec9adSJason Gunthorpe 9341a1f460fSJason Gunthorpe ah->sgid_attr = rdma_update_sgid_attr(ah_attr, ah->sgid_attr); 9358d9ec9adSJason Gunthorpe rdma_unfill_sgid_attr(ah_attr, old_sgid_attr); 9368d9ec9adSJason Gunthorpe return ret; 9371da177e4SLinus Torvalds } 93867b985b6SDasaratharaman Chandramouli EXPORT_SYMBOL(rdma_modify_ah); 9391da177e4SLinus Torvalds 940bfbfd661SDasaratharaman Chandramouli int rdma_query_ah(struct ib_ah *ah, struct rdma_ah_attr *ah_attr) 9411da177e4SLinus Torvalds { 9428d9ec9adSJason Gunthorpe ah_attr->grh.sgid_attr = NULL; 9438d9ec9adSJason Gunthorpe 9443023a1e9SKamal Heib return ah->device->ops.query_ah ? 9453023a1e9SKamal Heib ah->device->ops.query_ah(ah, ah_attr) : 94687915bf8SLeon Romanovsky -EOPNOTSUPP; 9471da177e4SLinus Torvalds } 948bfbfd661SDasaratharaman Chandramouli EXPORT_SYMBOL(rdma_query_ah); 9491da177e4SLinus Torvalds 950c4367a26SShamir Rabinovitch int rdma_destroy_ah_user(struct ib_ah *ah, u32 flags, struct ib_udata *udata) 9511da177e4SLinus Torvalds { 9521a1f460fSJason Gunthorpe const struct ib_gid_attr *sgid_attr = ah->sgid_attr; 9531da177e4SLinus Torvalds struct ib_pd *pd; 9541da177e4SLinus Torvalds 9552553ba21SGal Pressman might_sleep_if(flags & RDMA_DESTROY_AH_SLEEPABLE); 9562553ba21SGal Pressman 9571da177e4SLinus Torvalds pd = ah->pd; 958d3456914SLeon Romanovsky 959d3456914SLeon Romanovsky ah->device->ops.destroy_ah(ah, flags); 9601da177e4SLinus Torvalds atomic_dec(&pd->usecnt); 9611a1f460fSJason Gunthorpe if (sgid_attr) 9621a1f460fSJason Gunthorpe rdma_put_gid_attr(sgid_attr); 9631da177e4SLinus Torvalds 964d3456914SLeon Romanovsky kfree(ah); 965d3456914SLeon Romanovsky return 0; 9661da177e4SLinus Torvalds } 967c4367a26SShamir Rabinovitch EXPORT_SYMBOL(rdma_destroy_ah_user); 9681da177e4SLinus Torvalds 969d41fcc67SRoland Dreier /* Shared receive queues */ 970d41fcc67SRoland Dreier 971d41fcc67SRoland Dreier struct ib_srq *ib_create_srq(struct ib_pd *pd, 972d41fcc67SRoland Dreier struct ib_srq_init_attr *srq_init_attr) 973d41fcc67SRoland Dreier { 974d41fcc67SRoland Dreier struct ib_srq *srq; 97568e326deSLeon Romanovsky int ret; 976d41fcc67SRoland Dreier 9773023a1e9SKamal Heib if (!pd->device->ops.create_srq) 97887915bf8SLeon Romanovsky return ERR_PTR(-EOPNOTSUPP); 979d41fcc67SRoland Dreier 98068e326deSLeon Romanovsky srq = rdma_zalloc_drv_obj(pd->device, ib_srq); 98168e326deSLeon Romanovsky if (!srq) 98268e326deSLeon Romanovsky return ERR_PTR(-ENOMEM); 983d41fcc67SRoland Dreier 984d41fcc67SRoland Dreier srq->device = pd->device; 985d41fcc67SRoland Dreier srq->pd = pd; 986d41fcc67SRoland Dreier srq->event_handler = srq_init_attr->event_handler; 987d41fcc67SRoland Dreier srq->srq_context = srq_init_attr->srq_context; 98896104edaSSean Hefty srq->srq_type = srq_init_attr->srq_type; 98968e326deSLeon Romanovsky 9901a56ff6dSArtemy Kovalyov if (ib_srq_has_cq(srq->srq_type)) { 9911a56ff6dSArtemy Kovalyov srq->ext.cq = srq_init_attr->ext.cq; 9921a56ff6dSArtemy Kovalyov atomic_inc(&srq->ext.cq->usecnt); 9931a56ff6dSArtemy Kovalyov } 994418d5130SSean Hefty if (srq->srq_type == IB_SRQT_XRC) { 995418d5130SSean Hefty srq->ext.xrc.xrcd = srq_init_attr->ext.xrc.xrcd; 996418d5130SSean Hefty atomic_inc(&srq->ext.xrc.xrcd->usecnt); 997418d5130SSean Hefty } 998d41fcc67SRoland Dreier atomic_inc(&pd->usecnt); 99968e326deSLeon Romanovsky 100068e326deSLeon Romanovsky ret = pd->device->ops.create_srq(srq, srq_init_attr, NULL); 100168e326deSLeon Romanovsky if (ret) { 100268e326deSLeon Romanovsky atomic_dec(&srq->pd->usecnt); 100368e326deSLeon Romanovsky if (srq->srq_type == IB_SRQT_XRC) 100468e326deSLeon Romanovsky atomic_dec(&srq->ext.xrc.xrcd->usecnt); 100568e326deSLeon Romanovsky if (ib_srq_has_cq(srq->srq_type)) 100668e326deSLeon Romanovsky atomic_dec(&srq->ext.cq->usecnt); 100768e326deSLeon Romanovsky kfree(srq); 100868e326deSLeon Romanovsky return ERR_PTR(ret); 1009d41fcc67SRoland Dreier } 1010d41fcc67SRoland Dreier 1011d41fcc67SRoland Dreier return srq; 1012d41fcc67SRoland Dreier } 1013d41fcc67SRoland Dreier EXPORT_SYMBOL(ib_create_srq); 1014d41fcc67SRoland Dreier 1015d41fcc67SRoland Dreier int ib_modify_srq(struct ib_srq *srq, 1016d41fcc67SRoland Dreier struct ib_srq_attr *srq_attr, 1017d41fcc67SRoland Dreier enum ib_srq_attr_mask srq_attr_mask) 1018d41fcc67SRoland Dreier { 10193023a1e9SKamal Heib return srq->device->ops.modify_srq ? 10203023a1e9SKamal Heib srq->device->ops.modify_srq(srq, srq_attr, srq_attr_mask, 10213023a1e9SKamal Heib NULL) : -EOPNOTSUPP; 1022d41fcc67SRoland Dreier } 1023d41fcc67SRoland Dreier EXPORT_SYMBOL(ib_modify_srq); 1024d41fcc67SRoland Dreier 1025d41fcc67SRoland Dreier int ib_query_srq(struct ib_srq *srq, 1026d41fcc67SRoland Dreier struct ib_srq_attr *srq_attr) 1027d41fcc67SRoland Dreier { 10283023a1e9SKamal Heib return srq->device->ops.query_srq ? 10293023a1e9SKamal Heib srq->device->ops.query_srq(srq, srq_attr) : -EOPNOTSUPP; 1030d41fcc67SRoland Dreier } 1031d41fcc67SRoland Dreier EXPORT_SYMBOL(ib_query_srq); 1032d41fcc67SRoland Dreier 1033c4367a26SShamir Rabinovitch int ib_destroy_srq_user(struct ib_srq *srq, struct ib_udata *udata) 1034d41fcc67SRoland Dreier { 1035d41fcc67SRoland Dreier if (atomic_read(&srq->usecnt)) 1036d41fcc67SRoland Dreier return -EBUSY; 1037d41fcc67SRoland Dreier 103868e326deSLeon Romanovsky srq->device->ops.destroy_srq(srq, udata); 1039d41fcc67SRoland Dreier 104068e326deSLeon Romanovsky atomic_dec(&srq->pd->usecnt); 104168e326deSLeon Romanovsky if (srq->srq_type == IB_SRQT_XRC) 104268e326deSLeon Romanovsky atomic_dec(&srq->ext.xrc.xrcd->usecnt); 104368e326deSLeon Romanovsky if (ib_srq_has_cq(srq->srq_type)) 104468e326deSLeon Romanovsky atomic_dec(&srq->ext.cq->usecnt); 104568e326deSLeon Romanovsky kfree(srq); 1046d41fcc67SRoland Dreier 104768e326deSLeon Romanovsky return 0; 1048d41fcc67SRoland Dreier } 1049c4367a26SShamir Rabinovitch EXPORT_SYMBOL(ib_destroy_srq_user); 1050d41fcc67SRoland Dreier 10511da177e4SLinus Torvalds /* Queue pairs */ 10521da177e4SLinus Torvalds 10530e0ec7e0SSean Hefty static void __ib_shared_qp_event_handler(struct ib_event *event, void *context) 10540e0ec7e0SSean Hefty { 10550e0ec7e0SSean Hefty struct ib_qp *qp = context; 105673c40c61SYishai Hadas unsigned long flags; 10570e0ec7e0SSean Hefty 105873c40c61SYishai Hadas spin_lock_irqsave(&qp->device->event_handler_lock, flags); 10590e0ec7e0SSean Hefty list_for_each_entry(event->element.qp, &qp->open_list, open_list) 1060eec9e29fSShlomo Pongratz if (event->element.qp->event_handler) 10610e0ec7e0SSean Hefty event->element.qp->event_handler(event, event->element.qp->qp_context); 106273c40c61SYishai Hadas spin_unlock_irqrestore(&qp->device->event_handler_lock, flags); 10630e0ec7e0SSean Hefty } 10640e0ec7e0SSean Hefty 1065d3d72d90SSean Hefty static void __ib_insert_xrcd_qp(struct ib_xrcd *xrcd, struct ib_qp *qp) 1066d3d72d90SSean Hefty { 1067d3d72d90SSean Hefty mutex_lock(&xrcd->tgt_qp_mutex); 1068d3d72d90SSean Hefty list_add(&qp->xrcd_list, &xrcd->tgt_qp_list); 1069d3d72d90SSean Hefty mutex_unlock(&xrcd->tgt_qp_mutex); 1070d3d72d90SSean Hefty } 1071d3d72d90SSean Hefty 10720e0ec7e0SSean Hefty static struct ib_qp *__ib_open_qp(struct ib_qp *real_qp, 10730e0ec7e0SSean Hefty void (*event_handler)(struct ib_event *, void *), 10740e0ec7e0SSean Hefty void *qp_context) 1075d3d72d90SSean Hefty { 10760e0ec7e0SSean Hefty struct ib_qp *qp; 10770e0ec7e0SSean Hefty unsigned long flags; 1078d291f1a6SDaniel Jurgens int err; 10790e0ec7e0SSean Hefty 10800e0ec7e0SSean Hefty qp = kzalloc(sizeof *qp, GFP_KERNEL); 10810e0ec7e0SSean Hefty if (!qp) 10820e0ec7e0SSean Hefty return ERR_PTR(-ENOMEM); 10830e0ec7e0SSean Hefty 10840e0ec7e0SSean Hefty qp->real_qp = real_qp; 1085d291f1a6SDaniel Jurgens err = ib_open_shared_qp_security(qp, real_qp->device); 1086d291f1a6SDaniel Jurgens if (err) { 1087d291f1a6SDaniel Jurgens kfree(qp); 1088d291f1a6SDaniel Jurgens return ERR_PTR(err); 1089d291f1a6SDaniel Jurgens } 1090d291f1a6SDaniel Jurgens 1091d291f1a6SDaniel Jurgens qp->real_qp = real_qp; 10920e0ec7e0SSean Hefty atomic_inc(&real_qp->usecnt); 10930e0ec7e0SSean Hefty qp->device = real_qp->device; 10940e0ec7e0SSean Hefty qp->event_handler = event_handler; 10950e0ec7e0SSean Hefty qp->qp_context = qp_context; 10960e0ec7e0SSean Hefty qp->qp_num = real_qp->qp_num; 10970e0ec7e0SSean Hefty qp->qp_type = real_qp->qp_type; 10980e0ec7e0SSean Hefty 10990e0ec7e0SSean Hefty spin_lock_irqsave(&real_qp->device->event_handler_lock, flags); 11000e0ec7e0SSean Hefty list_add(&qp->open_list, &real_qp->open_list); 11010e0ec7e0SSean Hefty spin_unlock_irqrestore(&real_qp->device->event_handler_lock, flags); 11020e0ec7e0SSean Hefty 11030e0ec7e0SSean Hefty return qp; 1104d3d72d90SSean Hefty } 1105d3d72d90SSean Hefty 11060e0ec7e0SSean Hefty struct ib_qp *ib_open_qp(struct ib_xrcd *xrcd, 11070e0ec7e0SSean Hefty struct ib_qp_open_attr *qp_open_attr) 11080e0ec7e0SSean Hefty { 11090e0ec7e0SSean Hefty struct ib_qp *qp, *real_qp; 11100e0ec7e0SSean Hefty 11110e0ec7e0SSean Hefty if (qp_open_attr->qp_type != IB_QPT_XRC_TGT) 11120e0ec7e0SSean Hefty return ERR_PTR(-EINVAL); 11130e0ec7e0SSean Hefty 11140e0ec7e0SSean Hefty qp = ERR_PTR(-EINVAL); 11150e0ec7e0SSean Hefty mutex_lock(&xrcd->tgt_qp_mutex); 11160e0ec7e0SSean Hefty list_for_each_entry(real_qp, &xrcd->tgt_qp_list, xrcd_list) { 11170e0ec7e0SSean Hefty if (real_qp->qp_num == qp_open_attr->qp_num) { 11180e0ec7e0SSean Hefty qp = __ib_open_qp(real_qp, qp_open_attr->event_handler, 11190e0ec7e0SSean Hefty qp_open_attr->qp_context); 11200e0ec7e0SSean Hefty break; 11210e0ec7e0SSean Hefty } 11220e0ec7e0SSean Hefty } 11230e0ec7e0SSean Hefty mutex_unlock(&xrcd->tgt_qp_mutex); 11240e0ec7e0SSean Hefty return qp; 11250e0ec7e0SSean Hefty } 11260e0ec7e0SSean Hefty EXPORT_SYMBOL(ib_open_qp); 11270e0ec7e0SSean Hefty 1128c4367a26SShamir Rabinovitch static struct ib_qp *create_xrc_qp_user(struct ib_qp *qp, 1129c4367a26SShamir Rabinovitch struct ib_qp_init_attr *qp_init_attr, 1130c4367a26SShamir Rabinovitch struct ib_udata *udata) 11311da177e4SLinus Torvalds { 113204c41bf3SChristoph Hellwig struct ib_qp *real_qp = qp; 11331da177e4SLinus Torvalds 11340e0ec7e0SSean Hefty qp->event_handler = __ib_shared_qp_event_handler; 11350e0ec7e0SSean Hefty qp->qp_context = qp; 1136b42b63cfSSean Hefty qp->pd = NULL; 1137b42b63cfSSean Hefty qp->send_cq = qp->recv_cq = NULL; 1138b42b63cfSSean Hefty qp->srq = NULL; 1139b42b63cfSSean Hefty qp->xrcd = qp_init_attr->xrcd; 1140b42b63cfSSean Hefty atomic_inc(&qp_init_attr->xrcd->usecnt); 11410e0ec7e0SSean Hefty INIT_LIST_HEAD(&qp->open_list); 11420e0ec7e0SSean Hefty 11430e0ec7e0SSean Hefty qp = __ib_open_qp(real_qp, qp_init_attr->event_handler, 11440e0ec7e0SSean Hefty qp_init_attr->qp_context); 1145535005caSYuval Avnery if (IS_ERR(qp)) 1146535005caSYuval Avnery return qp; 1147535005caSYuval Avnery 11480e0ec7e0SSean Hefty __ib_insert_xrcd_qp(qp_init_attr->xrcd, real_qp); 114904c41bf3SChristoph Hellwig return qp; 115004c41bf3SChristoph Hellwig } 115104c41bf3SChristoph Hellwig 1152c4367a26SShamir Rabinovitch struct ib_qp *ib_create_qp_user(struct ib_pd *pd, 1153c4367a26SShamir Rabinovitch struct ib_qp_init_attr *qp_init_attr, 1154c4367a26SShamir Rabinovitch struct ib_udata *udata) 115504c41bf3SChristoph Hellwig { 115604c41bf3SChristoph Hellwig struct ib_device *device = pd ? pd->device : qp_init_attr->xrcd->device; 115704c41bf3SChristoph Hellwig struct ib_qp *qp; 1158a060b562SChristoph Hellwig int ret; 1159a060b562SChristoph Hellwig 1160a9017e23SYishai Hadas if (qp_init_attr->rwq_ind_tbl && 1161a9017e23SYishai Hadas (qp_init_attr->recv_cq || 1162a9017e23SYishai Hadas qp_init_attr->srq || qp_init_attr->cap.max_recv_wr || 1163a9017e23SYishai Hadas qp_init_attr->cap.max_recv_sge)) 1164a9017e23SYishai Hadas return ERR_PTR(-EINVAL); 1165a9017e23SYishai Hadas 1166185eddc4SMax Gurtovoy if ((qp_init_attr->create_flags & IB_QP_CREATE_INTEGRITY_EN) && 1167185eddc4SMax Gurtovoy !(device->attrs.device_cap_flags & IB_DEVICE_INTEGRITY_HANDOVER)) 1168185eddc4SMax Gurtovoy return ERR_PTR(-EINVAL); 1169185eddc4SMax Gurtovoy 1170a060b562SChristoph Hellwig /* 1171a060b562SChristoph Hellwig * If the callers is using the RDMA API calculate the resources 1172a060b562SChristoph Hellwig * needed for the RDMA READ/WRITE operations. 1173a060b562SChristoph Hellwig * 1174a060b562SChristoph Hellwig * Note that these callers need to pass in a port number. 1175a060b562SChristoph Hellwig */ 1176a060b562SChristoph Hellwig if (qp_init_attr->cap.max_rdma_ctxs) 1177a060b562SChristoph Hellwig rdma_rw_init_qp(device, qp_init_attr); 117804c41bf3SChristoph Hellwig 11792f08ee36SSteve Wise qp = _ib_create_qp(device, pd, qp_init_attr, NULL, NULL); 118004c41bf3SChristoph Hellwig if (IS_ERR(qp)) 118104c41bf3SChristoph Hellwig return qp; 118204c41bf3SChristoph Hellwig 1183d291f1a6SDaniel Jurgens ret = ib_create_qp_security(qp, device); 1184535005caSYuval Avnery if (ret) 1185535005caSYuval Avnery goto err; 1186d291f1a6SDaniel Jurgens 118704c41bf3SChristoph Hellwig qp->qp_type = qp_init_attr->qp_type; 1188a9017e23SYishai Hadas qp->rwq_ind_tbl = qp_init_attr->rwq_ind_tbl; 118904c41bf3SChristoph Hellwig 119004c41bf3SChristoph Hellwig atomic_set(&qp->usecnt, 0); 1191fffb0383SChristoph Hellwig qp->mrs_used = 0; 1192fffb0383SChristoph Hellwig spin_lock_init(&qp->mr_lock); 1193a060b562SChristoph Hellwig INIT_LIST_HEAD(&qp->rdma_mrs); 11940e353e34SChristoph Hellwig INIT_LIST_HEAD(&qp->sig_mrs); 1195498ca3c8SNoa Osherovich qp->port = 0; 1196fffb0383SChristoph Hellwig 1197535005caSYuval Avnery if (qp_init_attr->qp_type == IB_QPT_XRC_TGT) { 1198c4367a26SShamir Rabinovitch struct ib_qp *xrc_qp = 1199c4367a26SShamir Rabinovitch create_xrc_qp_user(qp, qp_init_attr, udata); 1200535005caSYuval Avnery 1201535005caSYuval Avnery if (IS_ERR(xrc_qp)) { 1202535005caSYuval Avnery ret = PTR_ERR(xrc_qp); 1203535005caSYuval Avnery goto err; 1204535005caSYuval Avnery } 1205535005caSYuval Avnery return xrc_qp; 1206535005caSYuval Avnery } 120704c41bf3SChristoph Hellwig 12081da177e4SLinus Torvalds qp->event_handler = qp_init_attr->event_handler; 12091da177e4SLinus Torvalds qp->qp_context = qp_init_attr->qp_context; 1210b42b63cfSSean Hefty if (qp_init_attr->qp_type == IB_QPT_XRC_INI) { 1211b42b63cfSSean Hefty qp->recv_cq = NULL; 1212b42b63cfSSean Hefty qp->srq = NULL; 1213b42b63cfSSean Hefty } else { 1214b42b63cfSSean Hefty qp->recv_cq = qp_init_attr->recv_cq; 1215a9017e23SYishai Hadas if (qp_init_attr->recv_cq) 1216b42b63cfSSean Hefty atomic_inc(&qp_init_attr->recv_cq->usecnt); 1217b42b63cfSSean Hefty qp->srq = qp_init_attr->srq; 1218b42b63cfSSean Hefty if (qp->srq) 1219b42b63cfSSean Hefty atomic_inc(&qp_init_attr->srq->usecnt); 1220b42b63cfSSean Hefty } 1221b42b63cfSSean Hefty 12221da177e4SLinus Torvalds qp->send_cq = qp_init_attr->send_cq; 1223b42b63cfSSean Hefty qp->xrcd = NULL; 1224b42b63cfSSean Hefty 12251da177e4SLinus Torvalds atomic_inc(&pd->usecnt); 1226a9017e23SYishai Hadas if (qp_init_attr->send_cq) 12271da177e4SLinus Torvalds atomic_inc(&qp_init_attr->send_cq->usecnt); 1228a9017e23SYishai Hadas if (qp_init_attr->rwq_ind_tbl) 1229a9017e23SYishai Hadas atomic_inc(&qp->rwq_ind_tbl->usecnt); 1230a060b562SChristoph Hellwig 1231a060b562SChristoph Hellwig if (qp_init_attr->cap.max_rdma_ctxs) { 1232a060b562SChristoph Hellwig ret = rdma_rw_init_mrs(qp, qp_init_attr); 1233535005caSYuval Avnery if (ret) 1234535005caSYuval Avnery goto err; 1235a060b562SChristoph Hellwig } 1236a060b562SChristoph Hellwig 1237632bc3f6SBart Van Assche /* 1238632bc3f6SBart Van Assche * Note: all hw drivers guarantee that max_send_sge is lower than 1239632bc3f6SBart Van Assche * the device RDMA WRITE SGE limit but not all hw drivers ensure that 1240632bc3f6SBart Van Assche * max_send_sge <= max_sge_rd. 1241632bc3f6SBart Van Assche */ 1242632bc3f6SBart Van Assche qp->max_write_sge = qp_init_attr->cap.max_send_sge; 1243632bc3f6SBart Van Assche qp->max_read_sge = min_t(u32, qp_init_attr->cap.max_send_sge, 1244632bc3f6SBart Van Assche device->attrs.max_sge_rd); 1245185eddc4SMax Gurtovoy if (qp_init_attr->create_flags & IB_QP_CREATE_INTEGRITY_EN) 1246185eddc4SMax Gurtovoy qp->integrity_en = true; 1247632bc3f6SBart Van Assche 12481da177e4SLinus Torvalds return qp; 1249535005caSYuval Avnery 1250535005caSYuval Avnery err: 1251535005caSYuval Avnery ib_destroy_qp(qp); 1252535005caSYuval Avnery return ERR_PTR(ret); 1253535005caSYuval Avnery 12541da177e4SLinus Torvalds } 1255c4367a26SShamir Rabinovitch EXPORT_SYMBOL(ib_create_qp_user); 12561da177e4SLinus Torvalds 12578a51866fSRoland Dreier static const struct { 12588a51866fSRoland Dreier int valid; 1259b42b63cfSSean Hefty enum ib_qp_attr_mask req_param[IB_QPT_MAX]; 1260b42b63cfSSean Hefty enum ib_qp_attr_mask opt_param[IB_QPT_MAX]; 12618a51866fSRoland Dreier } qp_state_table[IB_QPS_ERR + 1][IB_QPS_ERR + 1] = { 12628a51866fSRoland Dreier [IB_QPS_RESET] = { 12638a51866fSRoland Dreier [IB_QPS_RESET] = { .valid = 1 }, 12648a51866fSRoland Dreier [IB_QPS_INIT] = { 12658a51866fSRoland Dreier .valid = 1, 12668a51866fSRoland Dreier .req_param = { 12678a51866fSRoland Dreier [IB_QPT_UD] = (IB_QP_PKEY_INDEX | 12688a51866fSRoland Dreier IB_QP_PORT | 12698a51866fSRoland Dreier IB_QP_QKEY), 1270c938a616SOr Gerlitz [IB_QPT_RAW_PACKET] = IB_QP_PORT, 12718a51866fSRoland Dreier [IB_QPT_UC] = (IB_QP_PKEY_INDEX | 12728a51866fSRoland Dreier IB_QP_PORT | 12738a51866fSRoland Dreier IB_QP_ACCESS_FLAGS), 12748a51866fSRoland Dreier [IB_QPT_RC] = (IB_QP_PKEY_INDEX | 12758a51866fSRoland Dreier IB_QP_PORT | 12768a51866fSRoland Dreier IB_QP_ACCESS_FLAGS), 1277b42b63cfSSean Hefty [IB_QPT_XRC_INI] = (IB_QP_PKEY_INDEX | 1278b42b63cfSSean Hefty IB_QP_PORT | 1279b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS), 1280b42b63cfSSean Hefty [IB_QPT_XRC_TGT] = (IB_QP_PKEY_INDEX | 1281b42b63cfSSean Hefty IB_QP_PORT | 1282b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS), 12838a51866fSRoland Dreier [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | 12848a51866fSRoland Dreier IB_QP_QKEY), 12858a51866fSRoland Dreier [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | 12868a51866fSRoland Dreier IB_QP_QKEY), 12878a51866fSRoland Dreier } 12888a51866fSRoland Dreier }, 12898a51866fSRoland Dreier }, 12908a51866fSRoland Dreier [IB_QPS_INIT] = { 12918a51866fSRoland Dreier [IB_QPS_RESET] = { .valid = 1 }, 12928a51866fSRoland Dreier [IB_QPS_ERR] = { .valid = 1 }, 12938a51866fSRoland Dreier [IB_QPS_INIT] = { 12948a51866fSRoland Dreier .valid = 1, 12958a51866fSRoland Dreier .opt_param = { 12968a51866fSRoland Dreier [IB_QPT_UD] = (IB_QP_PKEY_INDEX | 12978a51866fSRoland Dreier IB_QP_PORT | 12988a51866fSRoland Dreier IB_QP_QKEY), 12998a51866fSRoland Dreier [IB_QPT_UC] = (IB_QP_PKEY_INDEX | 13008a51866fSRoland Dreier IB_QP_PORT | 13018a51866fSRoland Dreier IB_QP_ACCESS_FLAGS), 13028a51866fSRoland Dreier [IB_QPT_RC] = (IB_QP_PKEY_INDEX | 13038a51866fSRoland Dreier IB_QP_PORT | 13048a51866fSRoland Dreier IB_QP_ACCESS_FLAGS), 1305b42b63cfSSean Hefty [IB_QPT_XRC_INI] = (IB_QP_PKEY_INDEX | 1306b42b63cfSSean Hefty IB_QP_PORT | 1307b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS), 1308b42b63cfSSean Hefty [IB_QPT_XRC_TGT] = (IB_QP_PKEY_INDEX | 1309b42b63cfSSean Hefty IB_QP_PORT | 1310b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS), 13118a51866fSRoland Dreier [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | 13128a51866fSRoland Dreier IB_QP_QKEY), 13138a51866fSRoland Dreier [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | 13148a51866fSRoland Dreier IB_QP_QKEY), 13158a51866fSRoland Dreier } 13168a51866fSRoland Dreier }, 13178a51866fSRoland Dreier [IB_QPS_RTR] = { 13188a51866fSRoland Dreier .valid = 1, 13198a51866fSRoland Dreier .req_param = { 13208a51866fSRoland Dreier [IB_QPT_UC] = (IB_QP_AV | 13218a51866fSRoland Dreier IB_QP_PATH_MTU | 13228a51866fSRoland Dreier IB_QP_DEST_QPN | 13238a51866fSRoland Dreier IB_QP_RQ_PSN), 13248a51866fSRoland Dreier [IB_QPT_RC] = (IB_QP_AV | 13258a51866fSRoland Dreier IB_QP_PATH_MTU | 13268a51866fSRoland Dreier IB_QP_DEST_QPN | 13278a51866fSRoland Dreier IB_QP_RQ_PSN | 13288a51866fSRoland Dreier IB_QP_MAX_DEST_RD_ATOMIC | 13298a51866fSRoland Dreier IB_QP_MIN_RNR_TIMER), 1330b42b63cfSSean Hefty [IB_QPT_XRC_INI] = (IB_QP_AV | 1331b42b63cfSSean Hefty IB_QP_PATH_MTU | 1332b42b63cfSSean Hefty IB_QP_DEST_QPN | 1333b42b63cfSSean Hefty IB_QP_RQ_PSN), 1334b42b63cfSSean Hefty [IB_QPT_XRC_TGT] = (IB_QP_AV | 1335b42b63cfSSean Hefty IB_QP_PATH_MTU | 1336b42b63cfSSean Hefty IB_QP_DEST_QPN | 1337b42b63cfSSean Hefty IB_QP_RQ_PSN | 1338b42b63cfSSean Hefty IB_QP_MAX_DEST_RD_ATOMIC | 1339b42b63cfSSean Hefty IB_QP_MIN_RNR_TIMER), 13408a51866fSRoland Dreier }, 13418a51866fSRoland Dreier .opt_param = { 13428a51866fSRoland Dreier [IB_QPT_UD] = (IB_QP_PKEY_INDEX | 13438a51866fSRoland Dreier IB_QP_QKEY), 13448a51866fSRoland Dreier [IB_QPT_UC] = (IB_QP_ALT_PATH | 13458a51866fSRoland Dreier IB_QP_ACCESS_FLAGS | 13468a51866fSRoland Dreier IB_QP_PKEY_INDEX), 13478a51866fSRoland Dreier [IB_QPT_RC] = (IB_QP_ALT_PATH | 13488a51866fSRoland Dreier IB_QP_ACCESS_FLAGS | 13498a51866fSRoland Dreier IB_QP_PKEY_INDEX), 1350b42b63cfSSean Hefty [IB_QPT_XRC_INI] = (IB_QP_ALT_PATH | 1351b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS | 1352b42b63cfSSean Hefty IB_QP_PKEY_INDEX), 1353b42b63cfSSean Hefty [IB_QPT_XRC_TGT] = (IB_QP_ALT_PATH | 1354b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS | 1355b42b63cfSSean Hefty IB_QP_PKEY_INDEX), 13568a51866fSRoland Dreier [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | 13578a51866fSRoland Dreier IB_QP_QKEY), 13588a51866fSRoland Dreier [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | 13598a51866fSRoland Dreier IB_QP_QKEY), 1360dd5f03beSMatan Barak }, 1361dbf727deSMatan Barak }, 13628a51866fSRoland Dreier }, 13638a51866fSRoland Dreier [IB_QPS_RTR] = { 13648a51866fSRoland Dreier [IB_QPS_RESET] = { .valid = 1 }, 13658a51866fSRoland Dreier [IB_QPS_ERR] = { .valid = 1 }, 13668a51866fSRoland Dreier [IB_QPS_RTS] = { 13678a51866fSRoland Dreier .valid = 1, 13688a51866fSRoland Dreier .req_param = { 13698a51866fSRoland Dreier [IB_QPT_UD] = IB_QP_SQ_PSN, 13708a51866fSRoland Dreier [IB_QPT_UC] = IB_QP_SQ_PSN, 13718a51866fSRoland Dreier [IB_QPT_RC] = (IB_QP_TIMEOUT | 13728a51866fSRoland Dreier IB_QP_RETRY_CNT | 13738a51866fSRoland Dreier IB_QP_RNR_RETRY | 13748a51866fSRoland Dreier IB_QP_SQ_PSN | 13758a51866fSRoland Dreier IB_QP_MAX_QP_RD_ATOMIC), 1376b42b63cfSSean Hefty [IB_QPT_XRC_INI] = (IB_QP_TIMEOUT | 1377b42b63cfSSean Hefty IB_QP_RETRY_CNT | 1378b42b63cfSSean Hefty IB_QP_RNR_RETRY | 1379b42b63cfSSean Hefty IB_QP_SQ_PSN | 1380b42b63cfSSean Hefty IB_QP_MAX_QP_RD_ATOMIC), 1381b42b63cfSSean Hefty [IB_QPT_XRC_TGT] = (IB_QP_TIMEOUT | 1382b42b63cfSSean Hefty IB_QP_SQ_PSN), 13838a51866fSRoland Dreier [IB_QPT_SMI] = IB_QP_SQ_PSN, 13848a51866fSRoland Dreier [IB_QPT_GSI] = IB_QP_SQ_PSN, 13858a51866fSRoland Dreier }, 13868a51866fSRoland Dreier .opt_param = { 13878a51866fSRoland Dreier [IB_QPT_UD] = (IB_QP_CUR_STATE | 13888a51866fSRoland Dreier IB_QP_QKEY), 13898a51866fSRoland Dreier [IB_QPT_UC] = (IB_QP_CUR_STATE | 13908a51866fSRoland Dreier IB_QP_ALT_PATH | 13918a51866fSRoland Dreier IB_QP_ACCESS_FLAGS | 13928a51866fSRoland Dreier IB_QP_PATH_MIG_STATE), 13938a51866fSRoland Dreier [IB_QPT_RC] = (IB_QP_CUR_STATE | 13948a51866fSRoland Dreier IB_QP_ALT_PATH | 13958a51866fSRoland Dreier IB_QP_ACCESS_FLAGS | 13968a51866fSRoland Dreier IB_QP_MIN_RNR_TIMER | 13978a51866fSRoland Dreier IB_QP_PATH_MIG_STATE), 1398b42b63cfSSean Hefty [IB_QPT_XRC_INI] = (IB_QP_CUR_STATE | 1399b42b63cfSSean Hefty IB_QP_ALT_PATH | 1400b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS | 1401b42b63cfSSean Hefty IB_QP_PATH_MIG_STATE), 1402b42b63cfSSean Hefty [IB_QPT_XRC_TGT] = (IB_QP_CUR_STATE | 1403b42b63cfSSean Hefty IB_QP_ALT_PATH | 1404b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS | 1405b42b63cfSSean Hefty IB_QP_MIN_RNR_TIMER | 1406b42b63cfSSean Hefty IB_QP_PATH_MIG_STATE), 14078a51866fSRoland Dreier [IB_QPT_SMI] = (IB_QP_CUR_STATE | 14088a51866fSRoland Dreier IB_QP_QKEY), 14098a51866fSRoland Dreier [IB_QPT_GSI] = (IB_QP_CUR_STATE | 14108a51866fSRoland Dreier IB_QP_QKEY), 1411528e5a1bSBodong Wang [IB_QPT_RAW_PACKET] = IB_QP_RATE_LIMIT, 14128a51866fSRoland Dreier } 14138a51866fSRoland Dreier } 14148a51866fSRoland Dreier }, 14158a51866fSRoland Dreier [IB_QPS_RTS] = { 14168a51866fSRoland Dreier [IB_QPS_RESET] = { .valid = 1 }, 14178a51866fSRoland Dreier [IB_QPS_ERR] = { .valid = 1 }, 14188a51866fSRoland Dreier [IB_QPS_RTS] = { 14198a51866fSRoland Dreier .valid = 1, 14208a51866fSRoland Dreier .opt_param = { 14218a51866fSRoland Dreier [IB_QPT_UD] = (IB_QP_CUR_STATE | 14228a51866fSRoland Dreier IB_QP_QKEY), 14234546d31dSDotan Barak [IB_QPT_UC] = (IB_QP_CUR_STATE | 14244546d31dSDotan Barak IB_QP_ACCESS_FLAGS | 14258a51866fSRoland Dreier IB_QP_ALT_PATH | 14268a51866fSRoland Dreier IB_QP_PATH_MIG_STATE), 14274546d31dSDotan Barak [IB_QPT_RC] = (IB_QP_CUR_STATE | 14284546d31dSDotan Barak IB_QP_ACCESS_FLAGS | 14298a51866fSRoland Dreier IB_QP_ALT_PATH | 14308a51866fSRoland Dreier IB_QP_PATH_MIG_STATE | 14318a51866fSRoland Dreier IB_QP_MIN_RNR_TIMER), 1432b42b63cfSSean Hefty [IB_QPT_XRC_INI] = (IB_QP_CUR_STATE | 1433b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS | 1434b42b63cfSSean Hefty IB_QP_ALT_PATH | 1435b42b63cfSSean Hefty IB_QP_PATH_MIG_STATE), 1436b42b63cfSSean Hefty [IB_QPT_XRC_TGT] = (IB_QP_CUR_STATE | 1437b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS | 1438b42b63cfSSean Hefty IB_QP_ALT_PATH | 1439b42b63cfSSean Hefty IB_QP_PATH_MIG_STATE | 1440b42b63cfSSean Hefty IB_QP_MIN_RNR_TIMER), 14418a51866fSRoland Dreier [IB_QPT_SMI] = (IB_QP_CUR_STATE | 14428a51866fSRoland Dreier IB_QP_QKEY), 14438a51866fSRoland Dreier [IB_QPT_GSI] = (IB_QP_CUR_STATE | 14448a51866fSRoland Dreier IB_QP_QKEY), 1445528e5a1bSBodong Wang [IB_QPT_RAW_PACKET] = IB_QP_RATE_LIMIT, 14468a51866fSRoland Dreier } 14478a51866fSRoland Dreier }, 14488a51866fSRoland Dreier [IB_QPS_SQD] = { 14498a51866fSRoland Dreier .valid = 1, 14508a51866fSRoland Dreier .opt_param = { 14518a51866fSRoland Dreier [IB_QPT_UD] = IB_QP_EN_SQD_ASYNC_NOTIFY, 14528a51866fSRoland Dreier [IB_QPT_UC] = IB_QP_EN_SQD_ASYNC_NOTIFY, 14538a51866fSRoland Dreier [IB_QPT_RC] = IB_QP_EN_SQD_ASYNC_NOTIFY, 1454b42b63cfSSean Hefty [IB_QPT_XRC_INI] = IB_QP_EN_SQD_ASYNC_NOTIFY, 1455b42b63cfSSean Hefty [IB_QPT_XRC_TGT] = IB_QP_EN_SQD_ASYNC_NOTIFY, /* ??? */ 14568a51866fSRoland Dreier [IB_QPT_SMI] = IB_QP_EN_SQD_ASYNC_NOTIFY, 14578a51866fSRoland Dreier [IB_QPT_GSI] = IB_QP_EN_SQD_ASYNC_NOTIFY 14588a51866fSRoland Dreier } 14598a51866fSRoland Dreier }, 14608a51866fSRoland Dreier }, 14618a51866fSRoland Dreier [IB_QPS_SQD] = { 14628a51866fSRoland Dreier [IB_QPS_RESET] = { .valid = 1 }, 14638a51866fSRoland Dreier [IB_QPS_ERR] = { .valid = 1 }, 14648a51866fSRoland Dreier [IB_QPS_RTS] = { 14658a51866fSRoland Dreier .valid = 1, 14668a51866fSRoland Dreier .opt_param = { 14678a51866fSRoland Dreier [IB_QPT_UD] = (IB_QP_CUR_STATE | 14688a51866fSRoland Dreier IB_QP_QKEY), 14698a51866fSRoland Dreier [IB_QPT_UC] = (IB_QP_CUR_STATE | 14708a51866fSRoland Dreier IB_QP_ALT_PATH | 14718a51866fSRoland Dreier IB_QP_ACCESS_FLAGS | 14728a51866fSRoland Dreier IB_QP_PATH_MIG_STATE), 14738a51866fSRoland Dreier [IB_QPT_RC] = (IB_QP_CUR_STATE | 14748a51866fSRoland Dreier IB_QP_ALT_PATH | 14758a51866fSRoland Dreier IB_QP_ACCESS_FLAGS | 14768a51866fSRoland Dreier IB_QP_MIN_RNR_TIMER | 14778a51866fSRoland Dreier IB_QP_PATH_MIG_STATE), 1478b42b63cfSSean Hefty [IB_QPT_XRC_INI] = (IB_QP_CUR_STATE | 1479b42b63cfSSean Hefty IB_QP_ALT_PATH | 1480b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS | 1481b42b63cfSSean Hefty IB_QP_PATH_MIG_STATE), 1482b42b63cfSSean Hefty [IB_QPT_XRC_TGT] = (IB_QP_CUR_STATE | 1483b42b63cfSSean Hefty IB_QP_ALT_PATH | 1484b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS | 1485b42b63cfSSean Hefty IB_QP_MIN_RNR_TIMER | 1486b42b63cfSSean Hefty IB_QP_PATH_MIG_STATE), 14878a51866fSRoland Dreier [IB_QPT_SMI] = (IB_QP_CUR_STATE | 14888a51866fSRoland Dreier IB_QP_QKEY), 14898a51866fSRoland Dreier [IB_QPT_GSI] = (IB_QP_CUR_STATE | 14908a51866fSRoland Dreier IB_QP_QKEY), 14918a51866fSRoland Dreier } 14928a51866fSRoland Dreier }, 14938a51866fSRoland Dreier [IB_QPS_SQD] = { 14948a51866fSRoland Dreier .valid = 1, 14958a51866fSRoland Dreier .opt_param = { 14968a51866fSRoland Dreier [IB_QPT_UD] = (IB_QP_PKEY_INDEX | 14978a51866fSRoland Dreier IB_QP_QKEY), 14988a51866fSRoland Dreier [IB_QPT_UC] = (IB_QP_AV | 14998a51866fSRoland Dreier IB_QP_ALT_PATH | 15008a51866fSRoland Dreier IB_QP_ACCESS_FLAGS | 15018a51866fSRoland Dreier IB_QP_PKEY_INDEX | 15028a51866fSRoland Dreier IB_QP_PATH_MIG_STATE), 15038a51866fSRoland Dreier [IB_QPT_RC] = (IB_QP_PORT | 15048a51866fSRoland Dreier IB_QP_AV | 15058a51866fSRoland Dreier IB_QP_TIMEOUT | 15068a51866fSRoland Dreier IB_QP_RETRY_CNT | 15078a51866fSRoland Dreier IB_QP_RNR_RETRY | 15088a51866fSRoland Dreier IB_QP_MAX_QP_RD_ATOMIC | 15098a51866fSRoland Dreier IB_QP_MAX_DEST_RD_ATOMIC | 15108a51866fSRoland Dreier IB_QP_ALT_PATH | 15118a51866fSRoland Dreier IB_QP_ACCESS_FLAGS | 15128a51866fSRoland Dreier IB_QP_PKEY_INDEX | 15138a51866fSRoland Dreier IB_QP_MIN_RNR_TIMER | 15148a51866fSRoland Dreier IB_QP_PATH_MIG_STATE), 1515b42b63cfSSean Hefty [IB_QPT_XRC_INI] = (IB_QP_PORT | 1516b42b63cfSSean Hefty IB_QP_AV | 1517b42b63cfSSean Hefty IB_QP_TIMEOUT | 1518b42b63cfSSean Hefty IB_QP_RETRY_CNT | 1519b42b63cfSSean Hefty IB_QP_RNR_RETRY | 1520b42b63cfSSean Hefty IB_QP_MAX_QP_RD_ATOMIC | 1521b42b63cfSSean Hefty IB_QP_ALT_PATH | 1522b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS | 1523b42b63cfSSean Hefty IB_QP_PKEY_INDEX | 1524b42b63cfSSean Hefty IB_QP_PATH_MIG_STATE), 1525b42b63cfSSean Hefty [IB_QPT_XRC_TGT] = (IB_QP_PORT | 1526b42b63cfSSean Hefty IB_QP_AV | 1527b42b63cfSSean Hefty IB_QP_TIMEOUT | 1528b42b63cfSSean Hefty IB_QP_MAX_DEST_RD_ATOMIC | 1529b42b63cfSSean Hefty IB_QP_ALT_PATH | 1530b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS | 1531b42b63cfSSean Hefty IB_QP_PKEY_INDEX | 1532b42b63cfSSean Hefty IB_QP_MIN_RNR_TIMER | 1533b42b63cfSSean Hefty IB_QP_PATH_MIG_STATE), 15348a51866fSRoland Dreier [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | 15358a51866fSRoland Dreier IB_QP_QKEY), 15368a51866fSRoland Dreier [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | 15378a51866fSRoland Dreier IB_QP_QKEY), 15388a51866fSRoland Dreier } 15398a51866fSRoland Dreier } 15408a51866fSRoland Dreier }, 15418a51866fSRoland Dreier [IB_QPS_SQE] = { 15428a51866fSRoland Dreier [IB_QPS_RESET] = { .valid = 1 }, 15438a51866fSRoland Dreier [IB_QPS_ERR] = { .valid = 1 }, 15448a51866fSRoland Dreier [IB_QPS_RTS] = { 15458a51866fSRoland Dreier .valid = 1, 15468a51866fSRoland Dreier .opt_param = { 15478a51866fSRoland Dreier [IB_QPT_UD] = (IB_QP_CUR_STATE | 15488a51866fSRoland Dreier IB_QP_QKEY), 15498a51866fSRoland Dreier [IB_QPT_UC] = (IB_QP_CUR_STATE | 15508a51866fSRoland Dreier IB_QP_ACCESS_FLAGS), 15518a51866fSRoland Dreier [IB_QPT_SMI] = (IB_QP_CUR_STATE | 15528a51866fSRoland Dreier IB_QP_QKEY), 15538a51866fSRoland Dreier [IB_QPT_GSI] = (IB_QP_CUR_STATE | 15548a51866fSRoland Dreier IB_QP_QKEY), 15558a51866fSRoland Dreier } 15568a51866fSRoland Dreier } 15578a51866fSRoland Dreier }, 15588a51866fSRoland Dreier [IB_QPS_ERR] = { 15598a51866fSRoland Dreier [IB_QPS_RESET] = { .valid = 1 }, 15608a51866fSRoland Dreier [IB_QPS_ERR] = { .valid = 1 } 15618a51866fSRoland Dreier } 15628a51866fSRoland Dreier }; 15638a51866fSRoland Dreier 156419b1f540SLeon Romanovsky bool ib_modify_qp_is_ok(enum ib_qp_state cur_state, enum ib_qp_state next_state, 1565d31131bbSKamal Heib enum ib_qp_type type, enum ib_qp_attr_mask mask) 15668a51866fSRoland Dreier { 15678a51866fSRoland Dreier enum ib_qp_attr_mask req_param, opt_param; 15688a51866fSRoland Dreier 15698a51866fSRoland Dreier if (mask & IB_QP_CUR_STATE && 15708a51866fSRoland Dreier cur_state != IB_QPS_RTR && cur_state != IB_QPS_RTS && 15718a51866fSRoland Dreier cur_state != IB_QPS_SQD && cur_state != IB_QPS_SQE) 157219b1f540SLeon Romanovsky return false; 15738a51866fSRoland Dreier 15748a51866fSRoland Dreier if (!qp_state_table[cur_state][next_state].valid) 157519b1f540SLeon Romanovsky return false; 15768a51866fSRoland Dreier 15778a51866fSRoland Dreier req_param = qp_state_table[cur_state][next_state].req_param[type]; 15788a51866fSRoland Dreier opt_param = qp_state_table[cur_state][next_state].opt_param[type]; 15798a51866fSRoland Dreier 15808a51866fSRoland Dreier if ((mask & req_param) != req_param) 158119b1f540SLeon Romanovsky return false; 15828a51866fSRoland Dreier 15838a51866fSRoland Dreier if (mask & ~(req_param | opt_param | IB_QP_STATE)) 158419b1f540SLeon Romanovsky return false; 15858a51866fSRoland Dreier 158619b1f540SLeon Romanovsky return true; 15878a51866fSRoland Dreier } 15888a51866fSRoland Dreier EXPORT_SYMBOL(ib_modify_qp_is_ok); 15898a51866fSRoland Dreier 1590947c99ecSParav Pandit /** 1591947c99ecSParav Pandit * ib_resolve_eth_dmac - Resolve destination mac address 1592947c99ecSParav Pandit * @device: Device to consider 1593947c99ecSParav Pandit * @ah_attr: address handle attribute which describes the 1594947c99ecSParav Pandit * source and destination parameters 1595947c99ecSParav Pandit * ib_resolve_eth_dmac() resolves destination mac address and L3 hop limit It 1596947c99ecSParav Pandit * returns 0 on success or appropriate error code. It initializes the 1597947c99ecSParav Pandit * necessary ah_attr fields when call is successful. 1598947c99ecSParav Pandit */ 1599c0348eb0SParav Pandit static int ib_resolve_eth_dmac(struct ib_device *device, 160090898850SDasaratharaman Chandramouli struct rdma_ah_attr *ah_attr) 1601ed4c54e5SOr Gerlitz { 1602ed4c54e5SOr Gerlitz int ret = 0; 1603d8966fcdSDasaratharaman Chandramouli 16049636a56fSNoa Osherovich if (rdma_is_multicast_addr((struct in6_addr *)ah_attr->grh.dgid.raw)) { 16059636a56fSNoa Osherovich if (ipv6_addr_v4mapped((struct in6_addr *)ah_attr->grh.dgid.raw)) { 16069636a56fSNoa Osherovich __be32 addr = 0; 16079636a56fSNoa Osherovich 16089636a56fSNoa Osherovich memcpy(&addr, ah_attr->grh.dgid.raw + 12, 4); 16099636a56fSNoa Osherovich ip_eth_mc_map(addr, (char *)ah_attr->roce.dmac); 16109636a56fSNoa Osherovich } else { 16119636a56fSNoa Osherovich ipv6_eth_mc_map((struct in6_addr *)ah_attr->grh.dgid.raw, 16129636a56fSNoa Osherovich (char *)ah_attr->roce.dmac); 16139636a56fSNoa Osherovich } 1614ed4c54e5SOr Gerlitz } else { 16151060f865SParav Pandit ret = ib_resolve_unicast_gid_dmac(device, ah_attr); 1616ed4c54e5SOr Gerlitz } 1617ed4c54e5SOr Gerlitz return ret; 1618ed4c54e5SOr Gerlitz } 1619ed4c54e5SOr Gerlitz 16208d9ec9adSJason Gunthorpe static bool is_qp_type_connected(const struct ib_qp *qp) 16218d9ec9adSJason Gunthorpe { 16228d9ec9adSJason Gunthorpe return (qp->qp_type == IB_QPT_UC || 16238d9ec9adSJason Gunthorpe qp->qp_type == IB_QPT_RC || 16248d9ec9adSJason Gunthorpe qp->qp_type == IB_QPT_XRC_INI || 16258d9ec9adSJason Gunthorpe qp->qp_type == IB_QPT_XRC_TGT); 16268d9ec9adSJason Gunthorpe } 16278d9ec9adSJason Gunthorpe 1628a512c2fbSParav Pandit /** 1629b96ac05aSParav Pandit * IB core internal function to perform QP attributes modification. 1630a512c2fbSParav Pandit */ 1631b96ac05aSParav Pandit static int _ib_modify_qp(struct ib_qp *qp, struct ib_qp_attr *attr, 1632a512c2fbSParav Pandit int attr_mask, struct ib_udata *udata) 1633a512c2fbSParav Pandit { 1634727b7e9aSMajd Dibbiny u8 port = attr_mask & IB_QP_PORT ? attr->port_num : qp->port; 16358d9ec9adSJason Gunthorpe const struct ib_gid_attr *old_sgid_attr_av; 16368d9ec9adSJason Gunthorpe const struct ib_gid_attr *old_sgid_attr_alt_av; 1637a512c2fbSParav Pandit int ret; 1638a512c2fbSParav Pandit 16398d9ec9adSJason Gunthorpe if (attr_mask & IB_QP_AV) { 16408d9ec9adSJason Gunthorpe ret = rdma_fill_sgid_attr(qp->device, &attr->ah_attr, 16418d9ec9adSJason Gunthorpe &old_sgid_attr_av); 16428d9ec9adSJason Gunthorpe if (ret) 16438d9ec9adSJason Gunthorpe return ret; 16448d9ec9adSJason Gunthorpe } 16458d9ec9adSJason Gunthorpe if (attr_mask & IB_QP_ALT_PATH) { 16461a1f460fSJason Gunthorpe /* 16471a1f460fSJason Gunthorpe * FIXME: This does not track the migration state, so if the 16481a1f460fSJason Gunthorpe * user loads a new alternate path after the HW has migrated 16491a1f460fSJason Gunthorpe * from primary->alternate we will keep the wrong 16501a1f460fSJason Gunthorpe * references. This is OK for IB because the reference 16511a1f460fSJason Gunthorpe * counting does not serve any functional purpose. 16521a1f460fSJason Gunthorpe */ 16538d9ec9adSJason Gunthorpe ret = rdma_fill_sgid_attr(qp->device, &attr->alt_ah_attr, 16548d9ec9adSJason Gunthorpe &old_sgid_attr_alt_av); 16558d9ec9adSJason Gunthorpe if (ret) 16568d9ec9adSJason Gunthorpe goto out_av; 16577a5c938bSJason Gunthorpe 16587a5c938bSJason Gunthorpe /* 16597a5c938bSJason Gunthorpe * Today the core code can only handle alternate paths and APM 16607a5c938bSJason Gunthorpe * for IB. Ban them in roce mode. 16617a5c938bSJason Gunthorpe */ 16627a5c938bSJason Gunthorpe if (!(rdma_protocol_ib(qp->device, 16637a5c938bSJason Gunthorpe attr->alt_ah_attr.port_num) && 16647a5c938bSJason Gunthorpe rdma_protocol_ib(qp->device, port))) { 16657a5c938bSJason Gunthorpe ret = EINVAL; 16667a5c938bSJason Gunthorpe goto out; 16677a5c938bSJason Gunthorpe } 16688d9ec9adSJason Gunthorpe } 16698d9ec9adSJason Gunthorpe 16708d9ec9adSJason Gunthorpe /* 16718d9ec9adSJason Gunthorpe * If the user provided the qp_attr then we have to resolve it. Kernel 16728d9ec9adSJason Gunthorpe * users have to provide already resolved rdma_ah_attr's 16738d9ec9adSJason Gunthorpe */ 16748d9ec9adSJason Gunthorpe if (udata && (attr_mask & IB_QP_AV) && 16758d9ec9adSJason Gunthorpe attr->ah_attr.type == RDMA_AH_ATTR_TYPE_ROCE && 16768d9ec9adSJason Gunthorpe is_qp_type_connected(qp)) { 16778d9ec9adSJason Gunthorpe ret = ib_resolve_eth_dmac(qp->device, &attr->ah_attr); 16788d9ec9adSJason Gunthorpe if (ret) 16798d9ec9adSJason Gunthorpe goto out; 16808d9ec9adSJason Gunthorpe } 16818d9ec9adSJason Gunthorpe 1682727b7e9aSMajd Dibbiny if (rdma_ib_or_roce(qp->device, port)) { 1683727b7e9aSMajd Dibbiny if (attr_mask & IB_QP_RQ_PSN && attr->rq_psn & ~0xffffff) { 168443c7c851SJason Gunthorpe dev_warn(&qp->device->dev, 168543c7c851SJason Gunthorpe "%s rq_psn overflow, masking to 24 bits\n", 168643c7c851SJason Gunthorpe __func__); 1687727b7e9aSMajd Dibbiny attr->rq_psn &= 0xffffff; 1688727b7e9aSMajd Dibbiny } 1689727b7e9aSMajd Dibbiny 1690727b7e9aSMajd Dibbiny if (attr_mask & IB_QP_SQ_PSN && attr->sq_psn & ~0xffffff) { 169143c7c851SJason Gunthorpe dev_warn(&qp->device->dev, 169243c7c851SJason Gunthorpe " %s sq_psn overflow, masking to 24 bits\n", 169343c7c851SJason Gunthorpe __func__); 1694727b7e9aSMajd Dibbiny attr->sq_psn &= 0xffffff; 1695727b7e9aSMajd Dibbiny } 1696727b7e9aSMajd Dibbiny } 1697727b7e9aSMajd Dibbiny 169899fa331dSMark Zhang /* 169999fa331dSMark Zhang * Bind this qp to a counter automatically based on the rdma counter 170099fa331dSMark Zhang * rules. This only set in RST2INIT with port specified 170199fa331dSMark Zhang */ 170299fa331dSMark Zhang if (!qp->counter && (attr_mask & IB_QP_PORT) && 170399fa331dSMark Zhang ((attr_mask & IB_QP_STATE) && attr->qp_state == IB_QPS_INIT)) 170499fa331dSMark Zhang rdma_counter_bind_qp_auto(qp, attr->port_num); 170599fa331dSMark Zhang 1706498ca3c8SNoa Osherovich ret = ib_security_modify_qp(qp, attr, attr_mask, udata); 17071a1f460fSJason Gunthorpe if (ret) 17081a1f460fSJason Gunthorpe goto out; 17091a1f460fSJason Gunthorpe 17101a1f460fSJason Gunthorpe if (attr_mask & IB_QP_PORT) 1711498ca3c8SNoa Osherovich qp->port = attr->port_num; 17121a1f460fSJason Gunthorpe if (attr_mask & IB_QP_AV) 17131a1f460fSJason Gunthorpe qp->av_sgid_attr = 17141a1f460fSJason Gunthorpe rdma_update_sgid_attr(&attr->ah_attr, qp->av_sgid_attr); 17151a1f460fSJason Gunthorpe if (attr_mask & IB_QP_ALT_PATH) 17161a1f460fSJason Gunthorpe qp->alt_path_sgid_attr = rdma_update_sgid_attr( 17171a1f460fSJason Gunthorpe &attr->alt_ah_attr, qp->alt_path_sgid_attr); 1718498ca3c8SNoa Osherovich 17198d9ec9adSJason Gunthorpe out: 17208d9ec9adSJason Gunthorpe if (attr_mask & IB_QP_ALT_PATH) 17218d9ec9adSJason Gunthorpe rdma_unfill_sgid_attr(&attr->alt_ah_attr, old_sgid_attr_alt_av); 17228d9ec9adSJason Gunthorpe out_av: 17238d9ec9adSJason Gunthorpe if (attr_mask & IB_QP_AV) 17248d9ec9adSJason Gunthorpe rdma_unfill_sgid_attr(&attr->ah_attr, old_sgid_attr_av); 1725498ca3c8SNoa Osherovich return ret; 1726a512c2fbSParav Pandit } 1727b96ac05aSParav Pandit 1728b96ac05aSParav Pandit /** 1729b96ac05aSParav Pandit * ib_modify_qp_with_udata - Modifies the attributes for the specified QP. 1730b96ac05aSParav Pandit * @ib_qp: The QP to modify. 1731b96ac05aSParav Pandit * @attr: On input, specifies the QP attributes to modify. On output, 1732b96ac05aSParav Pandit * the current values of selected QP attributes are returned. 1733b96ac05aSParav Pandit * @attr_mask: A bit-mask used to specify which attributes of the QP 1734b96ac05aSParav Pandit * are being modified. 1735b96ac05aSParav Pandit * @udata: pointer to user's input output buffer information 1736b96ac05aSParav Pandit * are being modified. 1737b96ac05aSParav Pandit * It returns 0 on success and returns appropriate error code on error. 1738b96ac05aSParav Pandit */ 1739b96ac05aSParav Pandit int ib_modify_qp_with_udata(struct ib_qp *ib_qp, struct ib_qp_attr *attr, 1740b96ac05aSParav Pandit int attr_mask, struct ib_udata *udata) 1741b96ac05aSParav Pandit { 17428d9ec9adSJason Gunthorpe return _ib_modify_qp(ib_qp->real_qp, attr, attr_mask, udata); 1743b96ac05aSParav Pandit } 1744a512c2fbSParav Pandit EXPORT_SYMBOL(ib_modify_qp_with_udata); 1745a512c2fbSParav Pandit 1746d4186194SYuval Shaia int ib_get_eth_speed(struct ib_device *dev, u8 port_num, u8 *speed, u8 *width) 1747d4186194SYuval Shaia { 1748d4186194SYuval Shaia int rc; 1749d4186194SYuval Shaia u32 netdev_speed; 1750d4186194SYuval Shaia struct net_device *netdev; 1751d4186194SYuval Shaia struct ethtool_link_ksettings lksettings; 1752d4186194SYuval Shaia 1753d4186194SYuval Shaia if (rdma_port_get_link_layer(dev, port_num) != IB_LINK_LAYER_ETHERNET) 1754d4186194SYuval Shaia return -EINVAL; 1755d4186194SYuval Shaia 1756c2261dd7SJason Gunthorpe netdev = ib_device_get_netdev(dev, port_num); 1757d4186194SYuval Shaia if (!netdev) 1758d4186194SYuval Shaia return -ENODEV; 1759d4186194SYuval Shaia 1760d4186194SYuval Shaia rtnl_lock(); 1761d4186194SYuval Shaia rc = __ethtool_get_link_ksettings(netdev, &lksettings); 1762d4186194SYuval Shaia rtnl_unlock(); 1763d4186194SYuval Shaia 1764d4186194SYuval Shaia dev_put(netdev); 1765d4186194SYuval Shaia 1766d4186194SYuval Shaia if (!rc) { 1767d4186194SYuval Shaia netdev_speed = lksettings.base.speed; 1768d4186194SYuval Shaia } else { 1769d4186194SYuval Shaia netdev_speed = SPEED_1000; 1770d4186194SYuval Shaia pr_warn("%s speed is unknown, defaulting to %d\n", netdev->name, 1771d4186194SYuval Shaia netdev_speed); 1772d4186194SYuval Shaia } 1773d4186194SYuval Shaia 1774d4186194SYuval Shaia if (netdev_speed <= SPEED_1000) { 1775d4186194SYuval Shaia *width = IB_WIDTH_1X; 1776d4186194SYuval Shaia *speed = IB_SPEED_SDR; 1777d4186194SYuval Shaia } else if (netdev_speed <= SPEED_10000) { 1778d4186194SYuval Shaia *width = IB_WIDTH_1X; 1779d4186194SYuval Shaia *speed = IB_SPEED_FDR10; 1780d4186194SYuval Shaia } else if (netdev_speed <= SPEED_20000) { 1781d4186194SYuval Shaia *width = IB_WIDTH_4X; 1782d4186194SYuval Shaia *speed = IB_SPEED_DDR; 1783d4186194SYuval Shaia } else if (netdev_speed <= SPEED_25000) { 1784d4186194SYuval Shaia *width = IB_WIDTH_1X; 1785d4186194SYuval Shaia *speed = IB_SPEED_EDR; 1786d4186194SYuval Shaia } else if (netdev_speed <= SPEED_40000) { 1787d4186194SYuval Shaia *width = IB_WIDTH_4X; 1788d4186194SYuval Shaia *speed = IB_SPEED_FDR10; 1789d4186194SYuval Shaia } else { 1790d4186194SYuval Shaia *width = IB_WIDTH_4X; 1791d4186194SYuval Shaia *speed = IB_SPEED_EDR; 1792d4186194SYuval Shaia } 1793d4186194SYuval Shaia 1794d4186194SYuval Shaia return 0; 1795d4186194SYuval Shaia } 1796d4186194SYuval Shaia EXPORT_SYMBOL(ib_get_eth_speed); 1797d4186194SYuval Shaia 17981da177e4SLinus Torvalds int ib_modify_qp(struct ib_qp *qp, 17991da177e4SLinus Torvalds struct ib_qp_attr *qp_attr, 18001da177e4SLinus Torvalds int qp_attr_mask) 18011da177e4SLinus Torvalds { 1802b96ac05aSParav Pandit return _ib_modify_qp(qp->real_qp, qp_attr, qp_attr_mask, NULL); 18031da177e4SLinus Torvalds } 18041da177e4SLinus Torvalds EXPORT_SYMBOL(ib_modify_qp); 18051da177e4SLinus Torvalds 18061da177e4SLinus Torvalds int ib_query_qp(struct ib_qp *qp, 18071da177e4SLinus Torvalds struct ib_qp_attr *qp_attr, 18081da177e4SLinus Torvalds int qp_attr_mask, 18091da177e4SLinus Torvalds struct ib_qp_init_attr *qp_init_attr) 18101da177e4SLinus Torvalds { 18118d9ec9adSJason Gunthorpe qp_attr->ah_attr.grh.sgid_attr = NULL; 18128d9ec9adSJason Gunthorpe qp_attr->alt_ah_attr.grh.sgid_attr = NULL; 18138d9ec9adSJason Gunthorpe 18143023a1e9SKamal Heib return qp->device->ops.query_qp ? 18153023a1e9SKamal Heib qp->device->ops.query_qp(qp->real_qp, qp_attr, qp_attr_mask, 18163023a1e9SKamal Heib qp_init_attr) : -EOPNOTSUPP; 18171da177e4SLinus Torvalds } 18181da177e4SLinus Torvalds EXPORT_SYMBOL(ib_query_qp); 18191da177e4SLinus Torvalds 18200e0ec7e0SSean Hefty int ib_close_qp(struct ib_qp *qp) 18210e0ec7e0SSean Hefty { 18220e0ec7e0SSean Hefty struct ib_qp *real_qp; 18230e0ec7e0SSean Hefty unsigned long flags; 18240e0ec7e0SSean Hefty 18250e0ec7e0SSean Hefty real_qp = qp->real_qp; 18260e0ec7e0SSean Hefty if (real_qp == qp) 18270e0ec7e0SSean Hefty return -EINVAL; 18280e0ec7e0SSean Hefty 18290e0ec7e0SSean Hefty spin_lock_irqsave(&real_qp->device->event_handler_lock, flags); 18300e0ec7e0SSean Hefty list_del(&qp->open_list); 18310e0ec7e0SSean Hefty spin_unlock_irqrestore(&real_qp->device->event_handler_lock, flags); 18320e0ec7e0SSean Hefty 18330e0ec7e0SSean Hefty atomic_dec(&real_qp->usecnt); 18344a50881bSMoni Shoua if (qp->qp_sec) 1835d291f1a6SDaniel Jurgens ib_close_shared_qp_security(qp->qp_sec); 18360e0ec7e0SSean Hefty kfree(qp); 18370e0ec7e0SSean Hefty 18380e0ec7e0SSean Hefty return 0; 18390e0ec7e0SSean Hefty } 18400e0ec7e0SSean Hefty EXPORT_SYMBOL(ib_close_qp); 18410e0ec7e0SSean Hefty 18420e0ec7e0SSean Hefty static int __ib_destroy_shared_qp(struct ib_qp *qp) 18430e0ec7e0SSean Hefty { 18440e0ec7e0SSean Hefty struct ib_xrcd *xrcd; 18450e0ec7e0SSean Hefty struct ib_qp *real_qp; 18460e0ec7e0SSean Hefty int ret; 18470e0ec7e0SSean Hefty 18480e0ec7e0SSean Hefty real_qp = qp->real_qp; 18490e0ec7e0SSean Hefty xrcd = real_qp->xrcd; 18500e0ec7e0SSean Hefty 18510e0ec7e0SSean Hefty mutex_lock(&xrcd->tgt_qp_mutex); 18520e0ec7e0SSean Hefty ib_close_qp(qp); 18530e0ec7e0SSean Hefty if (atomic_read(&real_qp->usecnt) == 0) 18540e0ec7e0SSean Hefty list_del(&real_qp->xrcd_list); 18550e0ec7e0SSean Hefty else 18560e0ec7e0SSean Hefty real_qp = NULL; 18570e0ec7e0SSean Hefty mutex_unlock(&xrcd->tgt_qp_mutex); 18580e0ec7e0SSean Hefty 18590e0ec7e0SSean Hefty if (real_qp) { 18600e0ec7e0SSean Hefty ret = ib_destroy_qp(real_qp); 18610e0ec7e0SSean Hefty if (!ret) 18620e0ec7e0SSean Hefty atomic_dec(&xrcd->usecnt); 18630e0ec7e0SSean Hefty else 18640e0ec7e0SSean Hefty __ib_insert_xrcd_qp(xrcd, real_qp); 18650e0ec7e0SSean Hefty } 18660e0ec7e0SSean Hefty 18670e0ec7e0SSean Hefty return 0; 18680e0ec7e0SSean Hefty } 18690e0ec7e0SSean Hefty 1870c4367a26SShamir Rabinovitch int ib_destroy_qp_user(struct ib_qp *qp, struct ib_udata *udata) 18711da177e4SLinus Torvalds { 18721a1f460fSJason Gunthorpe const struct ib_gid_attr *alt_path_sgid_attr = qp->alt_path_sgid_attr; 18731a1f460fSJason Gunthorpe const struct ib_gid_attr *av_sgid_attr = qp->av_sgid_attr; 18741da177e4SLinus Torvalds struct ib_pd *pd; 18751da177e4SLinus Torvalds struct ib_cq *scq, *rcq; 18761da177e4SLinus Torvalds struct ib_srq *srq; 1877a9017e23SYishai Hadas struct ib_rwq_ind_table *ind_tbl; 1878d291f1a6SDaniel Jurgens struct ib_qp_security *sec; 18791da177e4SLinus Torvalds int ret; 18801da177e4SLinus Torvalds 1881fffb0383SChristoph Hellwig WARN_ON_ONCE(qp->mrs_used > 0); 1882fffb0383SChristoph Hellwig 18830e0ec7e0SSean Hefty if (atomic_read(&qp->usecnt)) 18840e0ec7e0SSean Hefty return -EBUSY; 18850e0ec7e0SSean Hefty 18860e0ec7e0SSean Hefty if (qp->real_qp != qp) 18870e0ec7e0SSean Hefty return __ib_destroy_shared_qp(qp); 18880e0ec7e0SSean Hefty 18891da177e4SLinus Torvalds pd = qp->pd; 18901da177e4SLinus Torvalds scq = qp->send_cq; 18911da177e4SLinus Torvalds rcq = qp->recv_cq; 18921da177e4SLinus Torvalds srq = qp->srq; 1893a9017e23SYishai Hadas ind_tbl = qp->rwq_ind_tbl; 1894d291f1a6SDaniel Jurgens sec = qp->qp_sec; 1895d291f1a6SDaniel Jurgens if (sec) 1896d291f1a6SDaniel Jurgens ib_destroy_qp_security_begin(sec); 18971da177e4SLinus Torvalds 1898a060b562SChristoph Hellwig if (!qp->uobject) 1899a060b562SChristoph Hellwig rdma_rw_cleanup_mrs(qp); 1900a060b562SChristoph Hellwig 190199fa331dSMark Zhang rdma_counter_unbind_qp(qp, true); 190278a0cd64SLeon Romanovsky rdma_restrack_del(&qp->res); 1903c4367a26SShamir Rabinovitch ret = qp->device->ops.destroy_qp(qp, udata); 19041da177e4SLinus Torvalds if (!ret) { 19051a1f460fSJason Gunthorpe if (alt_path_sgid_attr) 19061a1f460fSJason Gunthorpe rdma_put_gid_attr(alt_path_sgid_attr); 19071a1f460fSJason Gunthorpe if (av_sgid_attr) 19081a1f460fSJason Gunthorpe rdma_put_gid_attr(av_sgid_attr); 1909b42b63cfSSean Hefty if (pd) 19101da177e4SLinus Torvalds atomic_dec(&pd->usecnt); 1911b42b63cfSSean Hefty if (scq) 19121da177e4SLinus Torvalds atomic_dec(&scq->usecnt); 1913b42b63cfSSean Hefty if (rcq) 19141da177e4SLinus Torvalds atomic_dec(&rcq->usecnt); 19151da177e4SLinus Torvalds if (srq) 19161da177e4SLinus Torvalds atomic_dec(&srq->usecnt); 1917a9017e23SYishai Hadas if (ind_tbl) 1918a9017e23SYishai Hadas atomic_dec(&ind_tbl->usecnt); 1919d291f1a6SDaniel Jurgens if (sec) 1920d291f1a6SDaniel Jurgens ib_destroy_qp_security_end(sec); 1921d291f1a6SDaniel Jurgens } else { 1922d291f1a6SDaniel Jurgens if (sec) 1923d291f1a6SDaniel Jurgens ib_destroy_qp_security_abort(sec); 19241da177e4SLinus Torvalds } 19251da177e4SLinus Torvalds 19261da177e4SLinus Torvalds return ret; 19271da177e4SLinus Torvalds } 1928c4367a26SShamir Rabinovitch EXPORT_SYMBOL(ib_destroy_qp_user); 19291da177e4SLinus Torvalds 19301da177e4SLinus Torvalds /* Completion queues */ 19311da177e4SLinus Torvalds 19327350cdd0SBharat Potnuri struct ib_cq *__ib_create_cq(struct ib_device *device, 19331da177e4SLinus Torvalds ib_comp_handler comp_handler, 19341da177e4SLinus Torvalds void (*event_handler)(struct ib_event *, void *), 19358e37210bSMatan Barak void *cq_context, 19367350cdd0SBharat Potnuri const struct ib_cq_init_attr *cq_attr, 19377350cdd0SBharat Potnuri const char *caller) 19381da177e4SLinus Torvalds { 19391da177e4SLinus Torvalds struct ib_cq *cq; 1940e39afe3dSLeon Romanovsky int ret; 19411da177e4SLinus Torvalds 1942e39afe3dSLeon Romanovsky cq = rdma_zalloc_drv_obj(device, ib_cq); 1943e39afe3dSLeon Romanovsky if (!cq) 1944e39afe3dSLeon Romanovsky return ERR_PTR(-ENOMEM); 19451da177e4SLinus Torvalds 19461da177e4SLinus Torvalds cq->device = device; 1947b5e81bf5SRoland Dreier cq->uobject = NULL; 19481da177e4SLinus Torvalds cq->comp_handler = comp_handler; 19491da177e4SLinus Torvalds cq->event_handler = event_handler; 19501da177e4SLinus Torvalds cq->cq_context = cq_context; 19511da177e4SLinus Torvalds atomic_set(&cq->usecnt, 0); 195208f294a1SLeon Romanovsky cq->res.type = RDMA_RESTRACK_CQ; 19532165fc26SLeon Romanovsky rdma_restrack_set_task(&cq->res, caller); 1954e39afe3dSLeon Romanovsky 1955e39afe3dSLeon Romanovsky ret = device->ops.create_cq(cq, cq_attr, NULL); 1956e39afe3dSLeon Romanovsky if (ret) { 1957e39afe3dSLeon Romanovsky kfree(cq); 1958e39afe3dSLeon Romanovsky return ERR_PTR(ret); 19591da177e4SLinus Torvalds } 19601da177e4SLinus Torvalds 1961e39afe3dSLeon Romanovsky rdma_restrack_kadd(&cq->res); 19621da177e4SLinus Torvalds return cq; 19631da177e4SLinus Torvalds } 19647350cdd0SBharat Potnuri EXPORT_SYMBOL(__ib_create_cq); 19651da177e4SLinus Torvalds 19664190b4e9SLeon Romanovsky int rdma_set_cq_moderation(struct ib_cq *cq, u16 cq_count, u16 cq_period) 19672dd57162SEli Cohen { 19683023a1e9SKamal Heib return cq->device->ops.modify_cq ? 19693023a1e9SKamal Heib cq->device->ops.modify_cq(cq, cq_count, 19703023a1e9SKamal Heib cq_period) : -EOPNOTSUPP; 19712dd57162SEli Cohen } 19724190b4e9SLeon Romanovsky EXPORT_SYMBOL(rdma_set_cq_moderation); 19732dd57162SEli Cohen 1974c4367a26SShamir Rabinovitch int ib_destroy_cq_user(struct ib_cq *cq, struct ib_udata *udata) 19751da177e4SLinus Torvalds { 19761da177e4SLinus Torvalds if (atomic_read(&cq->usecnt)) 19771da177e4SLinus Torvalds return -EBUSY; 19781da177e4SLinus Torvalds 197908f294a1SLeon Romanovsky rdma_restrack_del(&cq->res); 1980a52c8e24SLeon Romanovsky cq->device->ops.destroy_cq(cq, udata); 1981e39afe3dSLeon Romanovsky kfree(cq); 1982a52c8e24SLeon Romanovsky return 0; 19831da177e4SLinus Torvalds } 1984c4367a26SShamir Rabinovitch EXPORT_SYMBOL(ib_destroy_cq_user); 19851da177e4SLinus Torvalds 1986a74cd4afSRoland Dreier int ib_resize_cq(struct ib_cq *cq, int cqe) 19871da177e4SLinus Torvalds { 19883023a1e9SKamal Heib return cq->device->ops.resize_cq ? 19893023a1e9SKamal Heib cq->device->ops.resize_cq(cq, cqe, NULL) : -EOPNOTSUPP; 19901da177e4SLinus Torvalds } 19911da177e4SLinus Torvalds EXPORT_SYMBOL(ib_resize_cq); 19921da177e4SLinus Torvalds 19931da177e4SLinus Torvalds /* Memory regions */ 19941da177e4SLinus Torvalds 1995c4367a26SShamir Rabinovitch int ib_dereg_mr_user(struct ib_mr *mr, struct ib_udata *udata) 19961da177e4SLinus Torvalds { 1997ab67ed8dSChristoph Hellwig struct ib_pd *pd = mr->pd; 1998be934ccaSAriel Levkovich struct ib_dm *dm = mr->dm; 19997c717d3aSMax Gurtovoy struct ib_sig_attrs *sig_attrs = mr->sig_attrs; 20001da177e4SLinus Torvalds int ret; 20011da177e4SLinus Torvalds 2002fccec5b8SSteve Wise rdma_restrack_del(&mr->res); 2003c4367a26SShamir Rabinovitch ret = mr->device->ops.dereg_mr(mr, udata); 2004be934ccaSAriel Levkovich if (!ret) { 20051da177e4SLinus Torvalds atomic_dec(&pd->usecnt); 2006be934ccaSAriel Levkovich if (dm) 2007be934ccaSAriel Levkovich atomic_dec(&dm->usecnt); 20087c717d3aSMax Gurtovoy kfree(sig_attrs); 2009be934ccaSAriel Levkovich } 20101da177e4SLinus Torvalds 20111da177e4SLinus Torvalds return ret; 20121da177e4SLinus Torvalds } 2013c4367a26SShamir Rabinovitch EXPORT_SYMBOL(ib_dereg_mr_user); 20141da177e4SLinus Torvalds 20159bee178bSSagi Grimberg /** 201691f57129SIsrael Rukshin * ib_alloc_mr_user() - Allocates a memory region 20179bee178bSSagi Grimberg * @pd: protection domain associated with the region 20189bee178bSSagi Grimberg * @mr_type: memory region type 20199bee178bSSagi Grimberg * @max_num_sg: maximum sg entries available for registration. 2020c4367a26SShamir Rabinovitch * @udata: user data or null for kernel objects 20219bee178bSSagi Grimberg * 20229bee178bSSagi Grimberg * Notes: 20239bee178bSSagi Grimberg * Memory registeration page/sg lists must not exceed max_num_sg. 20249bee178bSSagi Grimberg * For mr_type IB_MR_TYPE_MEM_REG, the total length cannot exceed 20259bee178bSSagi Grimberg * max_num_sg * used_page_size. 20269bee178bSSagi Grimberg * 20279bee178bSSagi Grimberg */ 2028c4367a26SShamir Rabinovitch struct ib_mr *ib_alloc_mr_user(struct ib_pd *pd, enum ib_mr_type mr_type, 2029c4367a26SShamir Rabinovitch u32 max_num_sg, struct ib_udata *udata) 203017cd3a2dSSagi Grimberg { 203117cd3a2dSSagi Grimberg struct ib_mr *mr; 203217cd3a2dSSagi Grimberg 20333023a1e9SKamal Heib if (!pd->device->ops.alloc_mr) 203487915bf8SLeon Romanovsky return ERR_PTR(-EOPNOTSUPP); 203517cd3a2dSSagi Grimberg 203626bc7eaeSIsrael Rukshin if (WARN_ON_ONCE(mr_type == IB_MR_TYPE_INTEGRITY)) 203726bc7eaeSIsrael Rukshin return ERR_PTR(-EINVAL); 203826bc7eaeSIsrael Rukshin 2039c4367a26SShamir Rabinovitch mr = pd->device->ops.alloc_mr(pd, mr_type, max_num_sg, udata); 204017cd3a2dSSagi Grimberg if (!IS_ERR(mr)) { 204117cd3a2dSSagi Grimberg mr->device = pd->device; 204217cd3a2dSSagi Grimberg mr->pd = pd; 204354e7e48bSAriel Levkovich mr->dm = NULL; 204417cd3a2dSSagi Grimberg mr->uobject = NULL; 204517cd3a2dSSagi Grimberg atomic_inc(&pd->usecnt); 2046d4a85c30SSteve Wise mr->need_inval = false; 2047fccec5b8SSteve Wise mr->res.type = RDMA_RESTRACK_MR; 2048af8d7037SShamir Rabinovitch rdma_restrack_kadd(&mr->res); 2049a0bc099aSMax Gurtovoy mr->type = mr_type; 20507c717d3aSMax Gurtovoy mr->sig_attrs = NULL; 205117cd3a2dSSagi Grimberg } 205217cd3a2dSSagi Grimberg 205317cd3a2dSSagi Grimberg return mr; 205417cd3a2dSSagi Grimberg } 2055c4367a26SShamir Rabinovitch EXPORT_SYMBOL(ib_alloc_mr_user); 205600f7ec36SSteve Wise 205726bc7eaeSIsrael Rukshin /** 205826bc7eaeSIsrael Rukshin * ib_alloc_mr_integrity() - Allocates an integrity memory region 205926bc7eaeSIsrael Rukshin * @pd: protection domain associated with the region 206026bc7eaeSIsrael Rukshin * @max_num_data_sg: maximum data sg entries available for registration 206126bc7eaeSIsrael Rukshin * @max_num_meta_sg: maximum metadata sg entries available for 206226bc7eaeSIsrael Rukshin * registration 206326bc7eaeSIsrael Rukshin * 206426bc7eaeSIsrael Rukshin * Notes: 206526bc7eaeSIsrael Rukshin * Memory registration page/sg lists must not exceed max_num_sg, 206626bc7eaeSIsrael Rukshin * also the integrity page/sg lists must not exceed max_num_meta_sg. 206726bc7eaeSIsrael Rukshin * 206826bc7eaeSIsrael Rukshin */ 206926bc7eaeSIsrael Rukshin struct ib_mr *ib_alloc_mr_integrity(struct ib_pd *pd, 207026bc7eaeSIsrael Rukshin u32 max_num_data_sg, 207126bc7eaeSIsrael Rukshin u32 max_num_meta_sg) 207226bc7eaeSIsrael Rukshin { 207326bc7eaeSIsrael Rukshin struct ib_mr *mr; 20747c717d3aSMax Gurtovoy struct ib_sig_attrs *sig_attrs; 207526bc7eaeSIsrael Rukshin 20762cdfcdd8SMax Gurtovoy if (!pd->device->ops.alloc_mr_integrity || 20772cdfcdd8SMax Gurtovoy !pd->device->ops.map_mr_sg_pi) 207826bc7eaeSIsrael Rukshin return ERR_PTR(-EOPNOTSUPP); 207926bc7eaeSIsrael Rukshin 208026bc7eaeSIsrael Rukshin if (!max_num_meta_sg) 208126bc7eaeSIsrael Rukshin return ERR_PTR(-EINVAL); 208226bc7eaeSIsrael Rukshin 20837c717d3aSMax Gurtovoy sig_attrs = kzalloc(sizeof(struct ib_sig_attrs), GFP_KERNEL); 20847c717d3aSMax Gurtovoy if (!sig_attrs) 20857c717d3aSMax Gurtovoy return ERR_PTR(-ENOMEM); 20867c717d3aSMax Gurtovoy 208726bc7eaeSIsrael Rukshin mr = pd->device->ops.alloc_mr_integrity(pd, max_num_data_sg, 208826bc7eaeSIsrael Rukshin max_num_meta_sg); 20897c717d3aSMax Gurtovoy if (IS_ERR(mr)) { 20907c717d3aSMax Gurtovoy kfree(sig_attrs); 209126bc7eaeSIsrael Rukshin return mr; 20927c717d3aSMax Gurtovoy } 209326bc7eaeSIsrael Rukshin 209426bc7eaeSIsrael Rukshin mr->device = pd->device; 209526bc7eaeSIsrael Rukshin mr->pd = pd; 209626bc7eaeSIsrael Rukshin mr->dm = NULL; 209726bc7eaeSIsrael Rukshin mr->uobject = NULL; 209826bc7eaeSIsrael Rukshin atomic_inc(&pd->usecnt); 209926bc7eaeSIsrael Rukshin mr->need_inval = false; 210026bc7eaeSIsrael Rukshin mr->res.type = RDMA_RESTRACK_MR; 210126bc7eaeSIsrael Rukshin rdma_restrack_kadd(&mr->res); 210226bc7eaeSIsrael Rukshin mr->type = IB_MR_TYPE_INTEGRITY; 21037c717d3aSMax Gurtovoy mr->sig_attrs = sig_attrs; 210426bc7eaeSIsrael Rukshin 210526bc7eaeSIsrael Rukshin return mr; 210626bc7eaeSIsrael Rukshin } 210726bc7eaeSIsrael Rukshin EXPORT_SYMBOL(ib_alloc_mr_integrity); 210826bc7eaeSIsrael Rukshin 21091da177e4SLinus Torvalds /* "Fast" memory regions */ 21101da177e4SLinus Torvalds 21111da177e4SLinus Torvalds struct ib_fmr *ib_alloc_fmr(struct ib_pd *pd, 21121da177e4SLinus Torvalds int mr_access_flags, 21131da177e4SLinus Torvalds struct ib_fmr_attr *fmr_attr) 21141da177e4SLinus Torvalds { 21151da177e4SLinus Torvalds struct ib_fmr *fmr; 21161da177e4SLinus Torvalds 21173023a1e9SKamal Heib if (!pd->device->ops.alloc_fmr) 211887915bf8SLeon Romanovsky return ERR_PTR(-EOPNOTSUPP); 21191da177e4SLinus Torvalds 21203023a1e9SKamal Heib fmr = pd->device->ops.alloc_fmr(pd, mr_access_flags, fmr_attr); 21211da177e4SLinus Torvalds if (!IS_ERR(fmr)) { 21221da177e4SLinus Torvalds fmr->device = pd->device; 21231da177e4SLinus Torvalds fmr->pd = pd; 21241da177e4SLinus Torvalds atomic_inc(&pd->usecnt); 21251da177e4SLinus Torvalds } 21261da177e4SLinus Torvalds 21271da177e4SLinus Torvalds return fmr; 21281da177e4SLinus Torvalds } 21291da177e4SLinus Torvalds EXPORT_SYMBOL(ib_alloc_fmr); 21301da177e4SLinus Torvalds 21311da177e4SLinus Torvalds int ib_unmap_fmr(struct list_head *fmr_list) 21321da177e4SLinus Torvalds { 21331da177e4SLinus Torvalds struct ib_fmr *fmr; 21341da177e4SLinus Torvalds 21351da177e4SLinus Torvalds if (list_empty(fmr_list)) 21361da177e4SLinus Torvalds return 0; 21371da177e4SLinus Torvalds 21381da177e4SLinus Torvalds fmr = list_entry(fmr_list->next, struct ib_fmr, list); 21393023a1e9SKamal Heib return fmr->device->ops.unmap_fmr(fmr_list); 21401da177e4SLinus Torvalds } 21411da177e4SLinus Torvalds EXPORT_SYMBOL(ib_unmap_fmr); 21421da177e4SLinus Torvalds 21431da177e4SLinus Torvalds int ib_dealloc_fmr(struct ib_fmr *fmr) 21441da177e4SLinus Torvalds { 21451da177e4SLinus Torvalds struct ib_pd *pd; 21461da177e4SLinus Torvalds int ret; 21471da177e4SLinus Torvalds 21481da177e4SLinus Torvalds pd = fmr->pd; 21493023a1e9SKamal Heib ret = fmr->device->ops.dealloc_fmr(fmr); 21501da177e4SLinus Torvalds if (!ret) 21511da177e4SLinus Torvalds atomic_dec(&pd->usecnt); 21521da177e4SLinus Torvalds 21531da177e4SLinus Torvalds return ret; 21541da177e4SLinus Torvalds } 21551da177e4SLinus Torvalds EXPORT_SYMBOL(ib_dealloc_fmr); 21561da177e4SLinus Torvalds 21571da177e4SLinus Torvalds /* Multicast groups */ 21581da177e4SLinus Torvalds 215952363335SNoa Osherovich static bool is_valid_mcast_lid(struct ib_qp *qp, u16 lid) 216052363335SNoa Osherovich { 216152363335SNoa Osherovich struct ib_qp_init_attr init_attr = {}; 216252363335SNoa Osherovich struct ib_qp_attr attr = {}; 216352363335SNoa Osherovich int num_eth_ports = 0; 216452363335SNoa Osherovich int port; 216552363335SNoa Osherovich 216652363335SNoa Osherovich /* If QP state >= init, it is assigned to a port and we can check this 216752363335SNoa Osherovich * port only. 216852363335SNoa Osherovich */ 216952363335SNoa Osherovich if (!ib_query_qp(qp, &attr, IB_QP_STATE | IB_QP_PORT, &init_attr)) { 217052363335SNoa Osherovich if (attr.qp_state >= IB_QPS_INIT) { 2171e6f9bc34SAlex Estrin if (rdma_port_get_link_layer(qp->device, attr.port_num) != 217252363335SNoa Osherovich IB_LINK_LAYER_INFINIBAND) 217352363335SNoa Osherovich return true; 217452363335SNoa Osherovich goto lid_check; 217552363335SNoa Osherovich } 217652363335SNoa Osherovich } 217752363335SNoa Osherovich 217852363335SNoa Osherovich /* Can't get a quick answer, iterate over all ports */ 217952363335SNoa Osherovich for (port = 0; port < qp->device->phys_port_cnt; port++) 2180e6f9bc34SAlex Estrin if (rdma_port_get_link_layer(qp->device, port) != 218152363335SNoa Osherovich IB_LINK_LAYER_INFINIBAND) 218252363335SNoa Osherovich num_eth_ports++; 218352363335SNoa Osherovich 218452363335SNoa Osherovich /* If we have at lease one Ethernet port, RoCE annex declares that 218552363335SNoa Osherovich * multicast LID should be ignored. We can't tell at this step if the 218652363335SNoa Osherovich * QP belongs to an IB or Ethernet port. 218752363335SNoa Osherovich */ 218852363335SNoa Osherovich if (num_eth_ports) 218952363335SNoa Osherovich return true; 219052363335SNoa Osherovich 219152363335SNoa Osherovich /* If all the ports are IB, we can check according to IB spec. */ 219252363335SNoa Osherovich lid_check: 219352363335SNoa Osherovich return !(lid < be16_to_cpu(IB_MULTICAST_LID_BASE) || 219452363335SNoa Osherovich lid == be16_to_cpu(IB_LID_PERMISSIVE)); 219552363335SNoa Osherovich } 219652363335SNoa Osherovich 21971da177e4SLinus Torvalds int ib_attach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid) 21981da177e4SLinus Torvalds { 2199c3bccbfbSOr Gerlitz int ret; 2200c3bccbfbSOr Gerlitz 22013023a1e9SKamal Heib if (!qp->device->ops.attach_mcast) 220287915bf8SLeon Romanovsky return -EOPNOTSUPP; 2203be1d325aSNoa Osherovich 2204be1d325aSNoa Osherovich if (!rdma_is_multicast_addr((struct in6_addr *)gid->raw) || 2205be1d325aSNoa Osherovich qp->qp_type != IB_QPT_UD || !is_valid_mcast_lid(qp, lid)) 22060c33aeedSJack Morgenstein return -EINVAL; 22070c33aeedSJack Morgenstein 22083023a1e9SKamal Heib ret = qp->device->ops.attach_mcast(qp, gid, lid); 2209c3bccbfbSOr Gerlitz if (!ret) 2210c3bccbfbSOr Gerlitz atomic_inc(&qp->usecnt); 2211c3bccbfbSOr Gerlitz return ret; 22121da177e4SLinus Torvalds } 22131da177e4SLinus Torvalds EXPORT_SYMBOL(ib_attach_mcast); 22141da177e4SLinus Torvalds 22151da177e4SLinus Torvalds int ib_detach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid) 22161da177e4SLinus Torvalds { 2217c3bccbfbSOr Gerlitz int ret; 2218c3bccbfbSOr Gerlitz 22193023a1e9SKamal Heib if (!qp->device->ops.detach_mcast) 222087915bf8SLeon Romanovsky return -EOPNOTSUPP; 2221be1d325aSNoa Osherovich 2222be1d325aSNoa Osherovich if (!rdma_is_multicast_addr((struct in6_addr *)gid->raw) || 2223be1d325aSNoa Osherovich qp->qp_type != IB_QPT_UD || !is_valid_mcast_lid(qp, lid)) 22240c33aeedSJack Morgenstein return -EINVAL; 22250c33aeedSJack Morgenstein 22263023a1e9SKamal Heib ret = qp->device->ops.detach_mcast(qp, gid, lid); 2227c3bccbfbSOr Gerlitz if (!ret) 2228c3bccbfbSOr Gerlitz atomic_dec(&qp->usecnt); 2229c3bccbfbSOr Gerlitz return ret; 22301da177e4SLinus Torvalds } 22311da177e4SLinus Torvalds EXPORT_SYMBOL(ib_detach_mcast); 223259991f94SSean Hefty 2233f66c8ba4SLeon Romanovsky struct ib_xrcd *__ib_alloc_xrcd(struct ib_device *device, const char *caller) 223459991f94SSean Hefty { 223559991f94SSean Hefty struct ib_xrcd *xrcd; 223659991f94SSean Hefty 22373023a1e9SKamal Heib if (!device->ops.alloc_xrcd) 223887915bf8SLeon Romanovsky return ERR_PTR(-EOPNOTSUPP); 223959991f94SSean Hefty 2240ff23dfa1SShamir Rabinovitch xrcd = device->ops.alloc_xrcd(device, NULL); 224159991f94SSean Hefty if (!IS_ERR(xrcd)) { 224259991f94SSean Hefty xrcd->device = device; 224353d0bd1eSSean Hefty xrcd->inode = NULL; 224459991f94SSean Hefty atomic_set(&xrcd->usecnt, 0); 2245d3d72d90SSean Hefty mutex_init(&xrcd->tgt_qp_mutex); 2246d3d72d90SSean Hefty INIT_LIST_HEAD(&xrcd->tgt_qp_list); 224759991f94SSean Hefty } 224859991f94SSean Hefty 224959991f94SSean Hefty return xrcd; 225059991f94SSean Hefty } 2251f66c8ba4SLeon Romanovsky EXPORT_SYMBOL(__ib_alloc_xrcd); 225259991f94SSean Hefty 2253c4367a26SShamir Rabinovitch int ib_dealloc_xrcd(struct ib_xrcd *xrcd, struct ib_udata *udata) 225459991f94SSean Hefty { 2255d3d72d90SSean Hefty struct ib_qp *qp; 2256d3d72d90SSean Hefty int ret; 2257d3d72d90SSean Hefty 225859991f94SSean Hefty if (atomic_read(&xrcd->usecnt)) 225959991f94SSean Hefty return -EBUSY; 226059991f94SSean Hefty 2261d3d72d90SSean Hefty while (!list_empty(&xrcd->tgt_qp_list)) { 2262d3d72d90SSean Hefty qp = list_entry(xrcd->tgt_qp_list.next, struct ib_qp, xrcd_list); 2263d3d72d90SSean Hefty ret = ib_destroy_qp(qp); 2264d3d72d90SSean Hefty if (ret) 2265d3d72d90SSean Hefty return ret; 2266d3d72d90SSean Hefty } 226756594ae1SParav Pandit mutex_destroy(&xrcd->tgt_qp_mutex); 2268d3d72d90SSean Hefty 2269c4367a26SShamir Rabinovitch return xrcd->device->ops.dealloc_xrcd(xrcd, udata); 227059991f94SSean Hefty } 227159991f94SSean Hefty EXPORT_SYMBOL(ib_dealloc_xrcd); 2272319a441dSHadar Hen Zion 22735fd251c8SYishai Hadas /** 22745fd251c8SYishai Hadas * ib_create_wq - Creates a WQ associated with the specified protection 22755fd251c8SYishai Hadas * domain. 22765fd251c8SYishai Hadas * @pd: The protection domain associated with the WQ. 22771f58621eSRandy Dunlap * @wq_attr: A list of initial attributes required to create the 22785fd251c8SYishai Hadas * WQ. If WQ creation succeeds, then the attributes are updated to 22795fd251c8SYishai Hadas * the actual capabilities of the created WQ. 22805fd251c8SYishai Hadas * 22811f58621eSRandy Dunlap * wq_attr->max_wr and wq_attr->max_sge determine 22825fd251c8SYishai Hadas * the requested size of the WQ, and set to the actual values allocated 22835fd251c8SYishai Hadas * on return. 22845fd251c8SYishai Hadas * If ib_create_wq() succeeds, then max_wr and max_sge will always be 22855fd251c8SYishai Hadas * at least as large as the requested values. 22865fd251c8SYishai Hadas */ 22875fd251c8SYishai Hadas struct ib_wq *ib_create_wq(struct ib_pd *pd, 22885fd251c8SYishai Hadas struct ib_wq_init_attr *wq_attr) 22895fd251c8SYishai Hadas { 22905fd251c8SYishai Hadas struct ib_wq *wq; 22915fd251c8SYishai Hadas 22923023a1e9SKamal Heib if (!pd->device->ops.create_wq) 229387915bf8SLeon Romanovsky return ERR_PTR(-EOPNOTSUPP); 22945fd251c8SYishai Hadas 22953023a1e9SKamal Heib wq = pd->device->ops.create_wq(pd, wq_attr, NULL); 22965fd251c8SYishai Hadas if (!IS_ERR(wq)) { 22975fd251c8SYishai Hadas wq->event_handler = wq_attr->event_handler; 22985fd251c8SYishai Hadas wq->wq_context = wq_attr->wq_context; 22995fd251c8SYishai Hadas wq->wq_type = wq_attr->wq_type; 23005fd251c8SYishai Hadas wq->cq = wq_attr->cq; 23015fd251c8SYishai Hadas wq->device = pd->device; 23025fd251c8SYishai Hadas wq->pd = pd; 23035fd251c8SYishai Hadas wq->uobject = NULL; 23045fd251c8SYishai Hadas atomic_inc(&pd->usecnt); 23055fd251c8SYishai Hadas atomic_inc(&wq_attr->cq->usecnt); 23065fd251c8SYishai Hadas atomic_set(&wq->usecnt, 0); 23075fd251c8SYishai Hadas } 23085fd251c8SYishai Hadas return wq; 23095fd251c8SYishai Hadas } 23105fd251c8SYishai Hadas EXPORT_SYMBOL(ib_create_wq); 23115fd251c8SYishai Hadas 23125fd251c8SYishai Hadas /** 2313c4367a26SShamir Rabinovitch * ib_destroy_wq - Destroys the specified user WQ. 23145fd251c8SYishai Hadas * @wq: The WQ to destroy. 2315c4367a26SShamir Rabinovitch * @udata: Valid user data 23165fd251c8SYishai Hadas */ 2317c4367a26SShamir Rabinovitch int ib_destroy_wq(struct ib_wq *wq, struct ib_udata *udata) 23185fd251c8SYishai Hadas { 23195fd251c8SYishai Hadas struct ib_cq *cq = wq->cq; 23205fd251c8SYishai Hadas struct ib_pd *pd = wq->pd; 23215fd251c8SYishai Hadas 23225fd251c8SYishai Hadas if (atomic_read(&wq->usecnt)) 23235fd251c8SYishai Hadas return -EBUSY; 23245fd251c8SYishai Hadas 2325a49b1dc7SLeon Romanovsky wq->device->ops.destroy_wq(wq, udata); 23265fd251c8SYishai Hadas atomic_dec(&pd->usecnt); 23275fd251c8SYishai Hadas atomic_dec(&cq->usecnt); 2328a49b1dc7SLeon Romanovsky 2329a49b1dc7SLeon Romanovsky return 0; 23305fd251c8SYishai Hadas } 23315fd251c8SYishai Hadas EXPORT_SYMBOL(ib_destroy_wq); 23325fd251c8SYishai Hadas 23335fd251c8SYishai Hadas /** 23345fd251c8SYishai Hadas * ib_modify_wq - Modifies the specified WQ. 23355fd251c8SYishai Hadas * @wq: The WQ to modify. 23365fd251c8SYishai Hadas * @wq_attr: On input, specifies the WQ attributes to modify. 23375fd251c8SYishai Hadas * @wq_attr_mask: A bit-mask used to specify which attributes of the WQ 23385fd251c8SYishai Hadas * are being modified. 23395fd251c8SYishai Hadas * On output, the current values of selected WQ attributes are returned. 23405fd251c8SYishai Hadas */ 23415fd251c8SYishai Hadas int ib_modify_wq(struct ib_wq *wq, struct ib_wq_attr *wq_attr, 23425fd251c8SYishai Hadas u32 wq_attr_mask) 23435fd251c8SYishai Hadas { 23445fd251c8SYishai Hadas int err; 23455fd251c8SYishai Hadas 23463023a1e9SKamal Heib if (!wq->device->ops.modify_wq) 234787915bf8SLeon Romanovsky return -EOPNOTSUPP; 23485fd251c8SYishai Hadas 23493023a1e9SKamal Heib err = wq->device->ops.modify_wq(wq, wq_attr, wq_attr_mask, NULL); 23505fd251c8SYishai Hadas return err; 23515fd251c8SYishai Hadas } 23525fd251c8SYishai Hadas EXPORT_SYMBOL(ib_modify_wq); 23535fd251c8SYishai Hadas 23546d39786bSYishai Hadas /* 23556d39786bSYishai Hadas * ib_create_rwq_ind_table - Creates a RQ Indirection Table. 23566d39786bSYishai Hadas * @device: The device on which to create the rwq indirection table. 23576d39786bSYishai Hadas * @ib_rwq_ind_table_init_attr: A list of initial attributes required to 23586d39786bSYishai Hadas * create the Indirection Table. 23596d39786bSYishai Hadas * 23606d39786bSYishai Hadas * Note: The life time of ib_rwq_ind_table_init_attr->ind_tbl is not less 23616d39786bSYishai Hadas * than the created ib_rwq_ind_table object and the caller is responsible 23626d39786bSYishai Hadas * for its memory allocation/free. 23636d39786bSYishai Hadas */ 23646d39786bSYishai Hadas struct ib_rwq_ind_table *ib_create_rwq_ind_table(struct ib_device *device, 23656d39786bSYishai Hadas struct ib_rwq_ind_table_init_attr *init_attr) 23666d39786bSYishai Hadas { 23676d39786bSYishai Hadas struct ib_rwq_ind_table *rwq_ind_table; 23686d39786bSYishai Hadas int i; 23696d39786bSYishai Hadas u32 table_size; 23706d39786bSYishai Hadas 23713023a1e9SKamal Heib if (!device->ops.create_rwq_ind_table) 237287915bf8SLeon Romanovsky return ERR_PTR(-EOPNOTSUPP); 23736d39786bSYishai Hadas 23746d39786bSYishai Hadas table_size = (1 << init_attr->log_ind_tbl_size); 23753023a1e9SKamal Heib rwq_ind_table = device->ops.create_rwq_ind_table(device, 23766d39786bSYishai Hadas init_attr, NULL); 23776d39786bSYishai Hadas if (IS_ERR(rwq_ind_table)) 23786d39786bSYishai Hadas return rwq_ind_table; 23796d39786bSYishai Hadas 23806d39786bSYishai Hadas rwq_ind_table->ind_tbl = init_attr->ind_tbl; 23816d39786bSYishai Hadas rwq_ind_table->log_ind_tbl_size = init_attr->log_ind_tbl_size; 23826d39786bSYishai Hadas rwq_ind_table->device = device; 23836d39786bSYishai Hadas rwq_ind_table->uobject = NULL; 23846d39786bSYishai Hadas atomic_set(&rwq_ind_table->usecnt, 0); 23856d39786bSYishai Hadas 23866d39786bSYishai Hadas for (i = 0; i < table_size; i++) 23876d39786bSYishai Hadas atomic_inc(&rwq_ind_table->ind_tbl[i]->usecnt); 23886d39786bSYishai Hadas 23896d39786bSYishai Hadas return rwq_ind_table; 23906d39786bSYishai Hadas } 23916d39786bSYishai Hadas EXPORT_SYMBOL(ib_create_rwq_ind_table); 23926d39786bSYishai Hadas 23936d39786bSYishai Hadas /* 23946d39786bSYishai Hadas * ib_destroy_rwq_ind_table - Destroys the specified Indirection Table. 23956d39786bSYishai Hadas * @wq_ind_table: The Indirection Table to destroy. 23966d39786bSYishai Hadas */ 23976d39786bSYishai Hadas int ib_destroy_rwq_ind_table(struct ib_rwq_ind_table *rwq_ind_table) 23986d39786bSYishai Hadas { 23996d39786bSYishai Hadas int err, i; 24006d39786bSYishai Hadas u32 table_size = (1 << rwq_ind_table->log_ind_tbl_size); 24016d39786bSYishai Hadas struct ib_wq **ind_tbl = rwq_ind_table->ind_tbl; 24026d39786bSYishai Hadas 24036d39786bSYishai Hadas if (atomic_read(&rwq_ind_table->usecnt)) 24046d39786bSYishai Hadas return -EBUSY; 24056d39786bSYishai Hadas 24063023a1e9SKamal Heib err = rwq_ind_table->device->ops.destroy_rwq_ind_table(rwq_ind_table); 24076d39786bSYishai Hadas if (!err) { 24086d39786bSYishai Hadas for (i = 0; i < table_size; i++) 24096d39786bSYishai Hadas atomic_dec(&ind_tbl[i]->usecnt); 24106d39786bSYishai Hadas } 24116d39786bSYishai Hadas 24126d39786bSYishai Hadas return err; 24136d39786bSYishai Hadas } 24146d39786bSYishai Hadas EXPORT_SYMBOL(ib_destroy_rwq_ind_table); 24156d39786bSYishai Hadas 24161b01d335SSagi Grimberg int ib_check_mr_status(struct ib_mr *mr, u32 check_mask, 24171b01d335SSagi Grimberg struct ib_mr_status *mr_status) 24181b01d335SSagi Grimberg { 24193023a1e9SKamal Heib if (!mr->device->ops.check_mr_status) 24203023a1e9SKamal Heib return -EOPNOTSUPP; 24213023a1e9SKamal Heib 24223023a1e9SKamal Heib return mr->device->ops.check_mr_status(mr, check_mask, mr_status); 24231b01d335SSagi Grimberg } 24241b01d335SSagi Grimberg EXPORT_SYMBOL(ib_check_mr_status); 24254c67e2bfSSagi Grimberg 242650174a7fSEli Cohen int ib_set_vf_link_state(struct ib_device *device, int vf, u8 port, 242750174a7fSEli Cohen int state) 242850174a7fSEli Cohen { 24293023a1e9SKamal Heib if (!device->ops.set_vf_link_state) 243087915bf8SLeon Romanovsky return -EOPNOTSUPP; 243150174a7fSEli Cohen 24323023a1e9SKamal Heib return device->ops.set_vf_link_state(device, vf, port, state); 243350174a7fSEli Cohen } 243450174a7fSEli Cohen EXPORT_SYMBOL(ib_set_vf_link_state); 243550174a7fSEli Cohen 243650174a7fSEli Cohen int ib_get_vf_config(struct ib_device *device, int vf, u8 port, 243750174a7fSEli Cohen struct ifla_vf_info *info) 243850174a7fSEli Cohen { 24393023a1e9SKamal Heib if (!device->ops.get_vf_config) 244087915bf8SLeon Romanovsky return -EOPNOTSUPP; 244150174a7fSEli Cohen 24423023a1e9SKamal Heib return device->ops.get_vf_config(device, vf, port, info); 244350174a7fSEli Cohen } 244450174a7fSEli Cohen EXPORT_SYMBOL(ib_get_vf_config); 244550174a7fSEli Cohen 244650174a7fSEli Cohen int ib_get_vf_stats(struct ib_device *device, int vf, u8 port, 244750174a7fSEli Cohen struct ifla_vf_stats *stats) 244850174a7fSEli Cohen { 24493023a1e9SKamal Heib if (!device->ops.get_vf_stats) 245087915bf8SLeon Romanovsky return -EOPNOTSUPP; 245150174a7fSEli Cohen 24523023a1e9SKamal Heib return device->ops.get_vf_stats(device, vf, port, stats); 245350174a7fSEli Cohen } 245450174a7fSEli Cohen EXPORT_SYMBOL(ib_get_vf_stats); 245550174a7fSEli Cohen 245650174a7fSEli Cohen int ib_set_vf_guid(struct ib_device *device, int vf, u8 port, u64 guid, 245750174a7fSEli Cohen int type) 245850174a7fSEli Cohen { 24593023a1e9SKamal Heib if (!device->ops.set_vf_guid) 246087915bf8SLeon Romanovsky return -EOPNOTSUPP; 246150174a7fSEli Cohen 24623023a1e9SKamal Heib return device->ops.set_vf_guid(device, vf, port, guid, type); 246350174a7fSEli Cohen } 246450174a7fSEli Cohen EXPORT_SYMBOL(ib_set_vf_guid); 246550174a7fSEli Cohen 2466bfcb3c5dSDanit Goldberg int ib_get_vf_guid(struct ib_device *device, int vf, u8 port, 2467bfcb3c5dSDanit Goldberg struct ifla_vf_guid *node_guid, 2468bfcb3c5dSDanit Goldberg struct ifla_vf_guid *port_guid) 2469bfcb3c5dSDanit Goldberg { 2470bfcb3c5dSDanit Goldberg if (!device->ops.get_vf_guid) 2471bfcb3c5dSDanit Goldberg return -EOPNOTSUPP; 2472bfcb3c5dSDanit Goldberg 2473bfcb3c5dSDanit Goldberg return device->ops.get_vf_guid(device, vf, port, node_guid, port_guid); 2474bfcb3c5dSDanit Goldberg } 2475bfcb3c5dSDanit Goldberg EXPORT_SYMBOL(ib_get_vf_guid); 24764c67e2bfSSagi Grimberg /** 24772cdfcdd8SMax Gurtovoy * ib_map_mr_sg_pi() - Map the dma mapped SG lists for PI (protection 24782cdfcdd8SMax Gurtovoy * information) and set an appropriate memory region for registration. 24792cdfcdd8SMax Gurtovoy * @mr: memory region 24802cdfcdd8SMax Gurtovoy * @data_sg: dma mapped scatterlist for data 24812cdfcdd8SMax Gurtovoy * @data_sg_nents: number of entries in data_sg 24822cdfcdd8SMax Gurtovoy * @data_sg_offset: offset in bytes into data_sg 24832cdfcdd8SMax Gurtovoy * @meta_sg: dma mapped scatterlist for metadata 24842cdfcdd8SMax Gurtovoy * @meta_sg_nents: number of entries in meta_sg 24852cdfcdd8SMax Gurtovoy * @meta_sg_offset: offset in bytes into meta_sg 24862cdfcdd8SMax Gurtovoy * @page_size: page vector desired page size 24872cdfcdd8SMax Gurtovoy * 24882cdfcdd8SMax Gurtovoy * Constraints: 24892cdfcdd8SMax Gurtovoy * - The MR must be allocated with type IB_MR_TYPE_INTEGRITY. 24902cdfcdd8SMax Gurtovoy * 24912cdfcdd8SMax Gurtovoy * Return: 0 on success. 24922cdfcdd8SMax Gurtovoy * 24932cdfcdd8SMax Gurtovoy * After this completes successfully, the memory region 24942cdfcdd8SMax Gurtovoy * is ready for registration. 24952cdfcdd8SMax Gurtovoy */ 24962cdfcdd8SMax Gurtovoy int ib_map_mr_sg_pi(struct ib_mr *mr, struct scatterlist *data_sg, 24972cdfcdd8SMax Gurtovoy int data_sg_nents, unsigned int *data_sg_offset, 24982cdfcdd8SMax Gurtovoy struct scatterlist *meta_sg, int meta_sg_nents, 24992cdfcdd8SMax Gurtovoy unsigned int *meta_sg_offset, unsigned int page_size) 25002cdfcdd8SMax Gurtovoy { 25012cdfcdd8SMax Gurtovoy if (unlikely(!mr->device->ops.map_mr_sg_pi || 25022cdfcdd8SMax Gurtovoy WARN_ON_ONCE(mr->type != IB_MR_TYPE_INTEGRITY))) 25032cdfcdd8SMax Gurtovoy return -EOPNOTSUPP; 25042cdfcdd8SMax Gurtovoy 25052cdfcdd8SMax Gurtovoy mr->page_size = page_size; 25062cdfcdd8SMax Gurtovoy 25072cdfcdd8SMax Gurtovoy return mr->device->ops.map_mr_sg_pi(mr, data_sg, data_sg_nents, 25082cdfcdd8SMax Gurtovoy data_sg_offset, meta_sg, 25092cdfcdd8SMax Gurtovoy meta_sg_nents, meta_sg_offset); 25102cdfcdd8SMax Gurtovoy } 25112cdfcdd8SMax Gurtovoy EXPORT_SYMBOL(ib_map_mr_sg_pi); 25122cdfcdd8SMax Gurtovoy 25132cdfcdd8SMax Gurtovoy /** 25144c67e2bfSSagi Grimberg * ib_map_mr_sg() - Map the largest prefix of a dma mapped SG list 25154c67e2bfSSagi Grimberg * and set it the memory region. 25164c67e2bfSSagi Grimberg * @mr: memory region 25174c67e2bfSSagi Grimberg * @sg: dma mapped scatterlist 25184c67e2bfSSagi Grimberg * @sg_nents: number of entries in sg 2519ff2ba993SChristoph Hellwig * @sg_offset: offset in bytes into sg 25204c67e2bfSSagi Grimberg * @page_size: page vector desired page size 25214c67e2bfSSagi Grimberg * 25224c67e2bfSSagi Grimberg * Constraints: 25234c67e2bfSSagi Grimberg * - The first sg element is allowed to have an offset. 252452746129SBart Van Assche * - Each sg element must either be aligned to page_size or virtually 252552746129SBart Van Assche * contiguous to the previous element. In case an sg element has a 252652746129SBart Van Assche * non-contiguous offset, the mapping prefix will not include it. 25274c67e2bfSSagi Grimberg * - The last sg element is allowed to have length less than page_size. 25284c67e2bfSSagi Grimberg * - If sg_nents total byte length exceeds the mr max_num_sge * page_size 25294c67e2bfSSagi Grimberg * then only max_num_sg entries will be mapped. 253052746129SBart Van Assche * - If the MR was allocated with type IB_MR_TYPE_SG_GAPS, none of these 2531f5aa9159SSagi Grimberg * constraints holds and the page_size argument is ignored. 25324c67e2bfSSagi Grimberg * 25334c67e2bfSSagi Grimberg * Returns the number of sg elements that were mapped to the memory region. 25344c67e2bfSSagi Grimberg * 25354c67e2bfSSagi Grimberg * After this completes successfully, the memory region 25364c67e2bfSSagi Grimberg * is ready for registration. 25374c67e2bfSSagi Grimberg */ 2538ff2ba993SChristoph Hellwig int ib_map_mr_sg(struct ib_mr *mr, struct scatterlist *sg, int sg_nents, 25399aa8b321SBart Van Assche unsigned int *sg_offset, unsigned int page_size) 25404c67e2bfSSagi Grimberg { 25413023a1e9SKamal Heib if (unlikely(!mr->device->ops.map_mr_sg)) 254287915bf8SLeon Romanovsky return -EOPNOTSUPP; 25434c67e2bfSSagi Grimberg 25444c67e2bfSSagi Grimberg mr->page_size = page_size; 25454c67e2bfSSagi Grimberg 25463023a1e9SKamal Heib return mr->device->ops.map_mr_sg(mr, sg, sg_nents, sg_offset); 25474c67e2bfSSagi Grimberg } 25484c67e2bfSSagi Grimberg EXPORT_SYMBOL(ib_map_mr_sg); 25494c67e2bfSSagi Grimberg 25504c67e2bfSSagi Grimberg /** 25514c67e2bfSSagi Grimberg * ib_sg_to_pages() - Convert the largest prefix of a sg list 25524c67e2bfSSagi Grimberg * to a page vector 25534c67e2bfSSagi Grimberg * @mr: memory region 25544c67e2bfSSagi Grimberg * @sgl: dma mapped scatterlist 25554c67e2bfSSagi Grimberg * @sg_nents: number of entries in sg 25569aa8b321SBart Van Assche * @sg_offset_p: IN: start offset in bytes into sg 25579aa8b321SBart Van Assche * OUT: offset in bytes for element n of the sg of the first 25589aa8b321SBart Van Assche * byte that has not been processed where n is the return 25599aa8b321SBart Van Assche * value of this function. 25604c67e2bfSSagi Grimberg * @set_page: driver page assignment function pointer 25614c67e2bfSSagi Grimberg * 25628f5ba10eSBart Van Assche * Core service helper for drivers to convert the largest 25634c67e2bfSSagi Grimberg * prefix of given sg list to a page vector. The sg list 25644c67e2bfSSagi Grimberg * prefix converted is the prefix that meet the requirements 25654c67e2bfSSagi Grimberg * of ib_map_mr_sg. 25664c67e2bfSSagi Grimberg * 25674c67e2bfSSagi Grimberg * Returns the number of sg elements that were assigned to 25684c67e2bfSSagi Grimberg * a page vector. 25694c67e2bfSSagi Grimberg */ 2570ff2ba993SChristoph Hellwig int ib_sg_to_pages(struct ib_mr *mr, struct scatterlist *sgl, int sg_nents, 25719aa8b321SBart Van Assche unsigned int *sg_offset_p, int (*set_page)(struct ib_mr *, u64)) 25724c67e2bfSSagi Grimberg { 25734c67e2bfSSagi Grimberg struct scatterlist *sg; 2574b6aeb980SBart Van Assche u64 last_end_dma_addr = 0; 25759aa8b321SBart Van Assche unsigned int sg_offset = sg_offset_p ? *sg_offset_p : 0; 25764c67e2bfSSagi Grimberg unsigned int last_page_off = 0; 25774c67e2bfSSagi Grimberg u64 page_mask = ~((u64)mr->page_size - 1); 25788f5ba10eSBart Van Assche int i, ret; 25794c67e2bfSSagi Grimberg 25809aa8b321SBart Van Assche if (unlikely(sg_nents <= 0 || sg_offset > sg_dma_len(&sgl[0]))) 25819aa8b321SBart Van Assche return -EINVAL; 25829aa8b321SBart Van Assche 2583ff2ba993SChristoph Hellwig mr->iova = sg_dma_address(&sgl[0]) + sg_offset; 25844c67e2bfSSagi Grimberg mr->length = 0; 25854c67e2bfSSagi Grimberg 25864c67e2bfSSagi Grimberg for_each_sg(sgl, sg, sg_nents, i) { 2587ff2ba993SChristoph Hellwig u64 dma_addr = sg_dma_address(sg) + sg_offset; 25889aa8b321SBart Van Assche u64 prev_addr = dma_addr; 2589ff2ba993SChristoph Hellwig unsigned int dma_len = sg_dma_len(sg) - sg_offset; 25904c67e2bfSSagi Grimberg u64 end_dma_addr = dma_addr + dma_len; 25914c67e2bfSSagi Grimberg u64 page_addr = dma_addr & page_mask; 25924c67e2bfSSagi Grimberg 25938f5ba10eSBart Van Assche /* 25948f5ba10eSBart Van Assche * For the second and later elements, check whether either the 25958f5ba10eSBart Van Assche * end of element i-1 or the start of element i is not aligned 25968f5ba10eSBart Van Assche * on a page boundary. 25978f5ba10eSBart Van Assche */ 25988f5ba10eSBart Van Assche if (i && (last_page_off != 0 || page_addr != dma_addr)) { 25998f5ba10eSBart Van Assche /* Stop mapping if there is a gap. */ 26008f5ba10eSBart Van Assche if (last_end_dma_addr != dma_addr) 26018f5ba10eSBart Van Assche break; 26024c67e2bfSSagi Grimberg 26038f5ba10eSBart Van Assche /* 26048f5ba10eSBart Van Assche * Coalesce this element with the last. If it is small 26058f5ba10eSBart Van Assche * enough just update mr->length. Otherwise start 26068f5ba10eSBart Van Assche * mapping from the next page. 26078f5ba10eSBart Van Assche */ 26088f5ba10eSBart Van Assche goto next_page; 26094c67e2bfSSagi Grimberg } 26104c67e2bfSSagi Grimberg 26114c67e2bfSSagi Grimberg do { 26128f5ba10eSBart Van Assche ret = set_page(mr, page_addr); 26139aa8b321SBart Van Assche if (unlikely(ret < 0)) { 26149aa8b321SBart Van Assche sg_offset = prev_addr - sg_dma_address(sg); 26159aa8b321SBart Van Assche mr->length += prev_addr - dma_addr; 26169aa8b321SBart Van Assche if (sg_offset_p) 26179aa8b321SBart Van Assche *sg_offset_p = sg_offset; 26189aa8b321SBart Van Assche return i || sg_offset ? i : ret; 26199aa8b321SBart Van Assche } 26209aa8b321SBart Van Assche prev_addr = page_addr; 26218f5ba10eSBart Van Assche next_page: 26224c67e2bfSSagi Grimberg page_addr += mr->page_size; 26234c67e2bfSSagi Grimberg } while (page_addr < end_dma_addr); 26244c67e2bfSSagi Grimberg 26254c67e2bfSSagi Grimberg mr->length += dma_len; 26264c67e2bfSSagi Grimberg last_end_dma_addr = end_dma_addr; 26274c67e2bfSSagi Grimberg last_page_off = end_dma_addr & ~page_mask; 2628ff2ba993SChristoph Hellwig 2629ff2ba993SChristoph Hellwig sg_offset = 0; 26304c67e2bfSSagi Grimberg } 26314c67e2bfSSagi Grimberg 26329aa8b321SBart Van Assche if (sg_offset_p) 26339aa8b321SBart Van Assche *sg_offset_p = 0; 26344c67e2bfSSagi Grimberg return i; 26354c67e2bfSSagi Grimberg } 26364c67e2bfSSagi Grimberg EXPORT_SYMBOL(ib_sg_to_pages); 2637765d6774SSteve Wise 2638765d6774SSteve Wise struct ib_drain_cqe { 2639765d6774SSteve Wise struct ib_cqe cqe; 2640765d6774SSteve Wise struct completion done; 2641765d6774SSteve Wise }; 2642765d6774SSteve Wise 2643765d6774SSteve Wise static void ib_drain_qp_done(struct ib_cq *cq, struct ib_wc *wc) 2644765d6774SSteve Wise { 2645765d6774SSteve Wise struct ib_drain_cqe *cqe = container_of(wc->wr_cqe, struct ib_drain_cqe, 2646765d6774SSteve Wise cqe); 2647765d6774SSteve Wise 2648765d6774SSteve Wise complete(&cqe->done); 2649765d6774SSteve Wise } 2650765d6774SSteve Wise 2651765d6774SSteve Wise /* 2652765d6774SSteve Wise * Post a WR and block until its completion is reaped for the SQ. 2653765d6774SSteve Wise */ 2654765d6774SSteve Wise static void __ib_drain_sq(struct ib_qp *qp) 2655765d6774SSteve Wise { 2656f039f44fSBart Van Assche struct ib_cq *cq = qp->send_cq; 2657765d6774SSteve Wise struct ib_qp_attr attr = { .qp_state = IB_QPS_ERR }; 2658765d6774SSteve Wise struct ib_drain_cqe sdrain; 2659a1ae7d03SBart Van Assche struct ib_rdma_wr swr = { 2660a1ae7d03SBart Van Assche .wr = { 26616ee68773SAndrew Morton .next = NULL, 26626ee68773SAndrew Morton { .wr_cqe = &sdrain.cqe, }, 2663a1ae7d03SBart Van Assche .opcode = IB_WR_RDMA_WRITE, 2664a1ae7d03SBart Van Assche }, 2665a1ae7d03SBart Van Assche }; 2666765d6774SSteve Wise int ret; 2667765d6774SSteve Wise 2668765d6774SSteve Wise ret = ib_modify_qp(qp, &attr, IB_QP_STATE); 2669765d6774SSteve Wise if (ret) { 2670765d6774SSteve Wise WARN_ONCE(ret, "failed to drain send queue: %d\n", ret); 2671765d6774SSteve Wise return; 2672765d6774SSteve Wise } 2673765d6774SSteve Wise 2674aaebd377SMax Gurtovoy sdrain.cqe.done = ib_drain_qp_done; 2675aaebd377SMax Gurtovoy init_completion(&sdrain.done); 2676aaebd377SMax Gurtovoy 26771fec77bfSBart Van Assche ret = ib_post_send(qp, &swr.wr, NULL); 2678765d6774SSteve Wise if (ret) { 2679765d6774SSteve Wise WARN_ONCE(ret, "failed to drain send queue: %d\n", ret); 2680765d6774SSteve Wise return; 2681765d6774SSteve Wise } 2682765d6774SSteve Wise 2683f039f44fSBart Van Assche if (cq->poll_ctx == IB_POLL_DIRECT) 2684f039f44fSBart Van Assche while (wait_for_completion_timeout(&sdrain.done, HZ / 10) <= 0) 2685f039f44fSBart Van Assche ib_process_cq_direct(cq, -1); 2686f039f44fSBart Van Assche else 2687765d6774SSteve Wise wait_for_completion(&sdrain.done); 2688765d6774SSteve Wise } 2689765d6774SSteve Wise 2690765d6774SSteve Wise /* 2691765d6774SSteve Wise * Post a WR and block until its completion is reaped for the RQ. 2692765d6774SSteve Wise */ 2693765d6774SSteve Wise static void __ib_drain_rq(struct ib_qp *qp) 2694765d6774SSteve Wise { 2695f039f44fSBart Van Assche struct ib_cq *cq = qp->recv_cq; 2696765d6774SSteve Wise struct ib_qp_attr attr = { .qp_state = IB_QPS_ERR }; 2697765d6774SSteve Wise struct ib_drain_cqe rdrain; 26981fec77bfSBart Van Assche struct ib_recv_wr rwr = {}; 2699765d6774SSteve Wise int ret; 2700765d6774SSteve Wise 2701765d6774SSteve Wise ret = ib_modify_qp(qp, &attr, IB_QP_STATE); 2702765d6774SSteve Wise if (ret) { 2703765d6774SSteve Wise WARN_ONCE(ret, "failed to drain recv queue: %d\n", ret); 2704765d6774SSteve Wise return; 2705765d6774SSteve Wise } 2706765d6774SSteve Wise 2707aaebd377SMax Gurtovoy rwr.wr_cqe = &rdrain.cqe; 2708aaebd377SMax Gurtovoy rdrain.cqe.done = ib_drain_qp_done; 2709aaebd377SMax Gurtovoy init_completion(&rdrain.done); 2710aaebd377SMax Gurtovoy 27111fec77bfSBart Van Assche ret = ib_post_recv(qp, &rwr, NULL); 2712765d6774SSteve Wise if (ret) { 2713765d6774SSteve Wise WARN_ONCE(ret, "failed to drain recv queue: %d\n", ret); 2714765d6774SSteve Wise return; 2715765d6774SSteve Wise } 2716765d6774SSteve Wise 2717f039f44fSBart Van Assche if (cq->poll_ctx == IB_POLL_DIRECT) 2718f039f44fSBart Van Assche while (wait_for_completion_timeout(&rdrain.done, HZ / 10) <= 0) 2719f039f44fSBart Van Assche ib_process_cq_direct(cq, -1); 2720f039f44fSBart Van Assche else 2721765d6774SSteve Wise wait_for_completion(&rdrain.done); 2722765d6774SSteve Wise } 2723765d6774SSteve Wise 2724765d6774SSteve Wise /** 2725765d6774SSteve Wise * ib_drain_sq() - Block until all SQ CQEs have been consumed by the 2726765d6774SSteve Wise * application. 2727765d6774SSteve Wise * @qp: queue pair to drain 2728765d6774SSteve Wise * 2729765d6774SSteve Wise * If the device has a provider-specific drain function, then 2730765d6774SSteve Wise * call that. Otherwise call the generic drain function 2731765d6774SSteve Wise * __ib_drain_sq(). 2732765d6774SSteve Wise * 2733765d6774SSteve Wise * The caller must: 2734765d6774SSteve Wise * 2735765d6774SSteve Wise * ensure there is room in the CQ and SQ for the drain work request and 2736765d6774SSteve Wise * completion. 2737765d6774SSteve Wise * 2738f039f44fSBart Van Assche * allocate the CQ using ib_alloc_cq(). 2739765d6774SSteve Wise * 2740765d6774SSteve Wise * ensure that there are no other contexts that are posting WRs concurrently. 2741765d6774SSteve Wise * Otherwise the drain is not guaranteed. 2742765d6774SSteve Wise */ 2743765d6774SSteve Wise void ib_drain_sq(struct ib_qp *qp) 2744765d6774SSteve Wise { 27453023a1e9SKamal Heib if (qp->device->ops.drain_sq) 27463023a1e9SKamal Heib qp->device->ops.drain_sq(qp); 2747765d6774SSteve Wise else 2748765d6774SSteve Wise __ib_drain_sq(qp); 27493e5901cbSChuck Lever trace_cq_drain_complete(qp->send_cq); 2750765d6774SSteve Wise } 2751765d6774SSteve Wise EXPORT_SYMBOL(ib_drain_sq); 2752765d6774SSteve Wise 2753765d6774SSteve Wise /** 2754765d6774SSteve Wise * ib_drain_rq() - Block until all RQ CQEs have been consumed by the 2755765d6774SSteve Wise * application. 2756765d6774SSteve Wise * @qp: queue pair to drain 2757765d6774SSteve Wise * 2758765d6774SSteve Wise * If the device has a provider-specific drain function, then 2759765d6774SSteve Wise * call that. Otherwise call the generic drain function 2760765d6774SSteve Wise * __ib_drain_rq(). 2761765d6774SSteve Wise * 2762765d6774SSteve Wise * The caller must: 2763765d6774SSteve Wise * 2764765d6774SSteve Wise * ensure there is room in the CQ and RQ for the drain work request and 2765765d6774SSteve Wise * completion. 2766765d6774SSteve Wise * 2767f039f44fSBart Van Assche * allocate the CQ using ib_alloc_cq(). 2768765d6774SSteve Wise * 2769765d6774SSteve Wise * ensure that there are no other contexts that are posting WRs concurrently. 2770765d6774SSteve Wise * Otherwise the drain is not guaranteed. 2771765d6774SSteve Wise */ 2772765d6774SSteve Wise void ib_drain_rq(struct ib_qp *qp) 2773765d6774SSteve Wise { 27743023a1e9SKamal Heib if (qp->device->ops.drain_rq) 27753023a1e9SKamal Heib qp->device->ops.drain_rq(qp); 2776765d6774SSteve Wise else 2777765d6774SSteve Wise __ib_drain_rq(qp); 27783e5901cbSChuck Lever trace_cq_drain_complete(qp->recv_cq); 2779765d6774SSteve Wise } 2780765d6774SSteve Wise EXPORT_SYMBOL(ib_drain_rq); 2781765d6774SSteve Wise 2782765d6774SSteve Wise /** 2783765d6774SSteve Wise * ib_drain_qp() - Block until all CQEs have been consumed by the 2784765d6774SSteve Wise * application on both the RQ and SQ. 2785765d6774SSteve Wise * @qp: queue pair to drain 2786765d6774SSteve Wise * 2787765d6774SSteve Wise * The caller must: 2788765d6774SSteve Wise * 2789765d6774SSteve Wise * ensure there is room in the CQ(s), SQ, and RQ for drain work requests 2790765d6774SSteve Wise * and completions. 2791765d6774SSteve Wise * 2792f039f44fSBart Van Assche * allocate the CQs using ib_alloc_cq(). 2793765d6774SSteve Wise * 2794765d6774SSteve Wise * ensure that there are no other contexts that are posting WRs concurrently. 2795765d6774SSteve Wise * Otherwise the drain is not guaranteed. 2796765d6774SSteve Wise */ 2797765d6774SSteve Wise void ib_drain_qp(struct ib_qp *qp) 2798765d6774SSteve Wise { 2799765d6774SSteve Wise ib_drain_sq(qp); 280042235f80SSagi Grimberg if (!qp->srq) 2801765d6774SSteve Wise ib_drain_rq(qp); 2802765d6774SSteve Wise } 2803765d6774SSteve Wise EXPORT_SYMBOL(ib_drain_qp); 2804f6a8a19bSDenis Drozdov 2805f6a8a19bSDenis Drozdov struct net_device *rdma_alloc_netdev(struct ib_device *device, u8 port_num, 2806f6a8a19bSDenis Drozdov enum rdma_netdev_t type, const char *name, 2807f6a8a19bSDenis Drozdov unsigned char name_assign_type, 2808f6a8a19bSDenis Drozdov void (*setup)(struct net_device *)) 2809f6a8a19bSDenis Drozdov { 2810f6a8a19bSDenis Drozdov struct rdma_netdev_alloc_params params; 2811f6a8a19bSDenis Drozdov struct net_device *netdev; 2812f6a8a19bSDenis Drozdov int rc; 2813f6a8a19bSDenis Drozdov 28143023a1e9SKamal Heib if (!device->ops.rdma_netdev_get_params) 2815f6a8a19bSDenis Drozdov return ERR_PTR(-EOPNOTSUPP); 2816f6a8a19bSDenis Drozdov 28173023a1e9SKamal Heib rc = device->ops.rdma_netdev_get_params(device, port_num, type, 28183023a1e9SKamal Heib ¶ms); 2819f6a8a19bSDenis Drozdov if (rc) 2820f6a8a19bSDenis Drozdov return ERR_PTR(rc); 2821f6a8a19bSDenis Drozdov 2822f6a8a19bSDenis Drozdov netdev = alloc_netdev_mqs(params.sizeof_priv, name, name_assign_type, 2823f6a8a19bSDenis Drozdov setup, params.txqs, params.rxqs); 2824f6a8a19bSDenis Drozdov if (!netdev) 2825f6a8a19bSDenis Drozdov return ERR_PTR(-ENOMEM); 2826f6a8a19bSDenis Drozdov 2827f6a8a19bSDenis Drozdov return netdev; 2828f6a8a19bSDenis Drozdov } 2829f6a8a19bSDenis Drozdov EXPORT_SYMBOL(rdma_alloc_netdev); 28305d6b0cb3SDenis Drozdov 28315d6b0cb3SDenis Drozdov int rdma_init_netdev(struct ib_device *device, u8 port_num, 28325d6b0cb3SDenis Drozdov enum rdma_netdev_t type, const char *name, 28335d6b0cb3SDenis Drozdov unsigned char name_assign_type, 28345d6b0cb3SDenis Drozdov void (*setup)(struct net_device *), 28355d6b0cb3SDenis Drozdov struct net_device *netdev) 28365d6b0cb3SDenis Drozdov { 28375d6b0cb3SDenis Drozdov struct rdma_netdev_alloc_params params; 28385d6b0cb3SDenis Drozdov int rc; 28395d6b0cb3SDenis Drozdov 28403023a1e9SKamal Heib if (!device->ops.rdma_netdev_get_params) 28415d6b0cb3SDenis Drozdov return -EOPNOTSUPP; 28425d6b0cb3SDenis Drozdov 28433023a1e9SKamal Heib rc = device->ops.rdma_netdev_get_params(device, port_num, type, 28443023a1e9SKamal Heib ¶ms); 28455d6b0cb3SDenis Drozdov if (rc) 28465d6b0cb3SDenis Drozdov return rc; 28475d6b0cb3SDenis Drozdov 28485d6b0cb3SDenis Drozdov return params.initialize_rdma_netdev(device, port_num, 28495d6b0cb3SDenis Drozdov netdev, params.param); 28505d6b0cb3SDenis Drozdov } 28515d6b0cb3SDenis Drozdov EXPORT_SYMBOL(rdma_init_netdev); 2852a808273aSShiraz Saleem 2853a808273aSShiraz Saleem void __rdma_block_iter_start(struct ib_block_iter *biter, 2854a808273aSShiraz Saleem struct scatterlist *sglist, unsigned int nents, 2855a808273aSShiraz Saleem unsigned long pgsz) 2856a808273aSShiraz Saleem { 2857a808273aSShiraz Saleem memset(biter, 0, sizeof(struct ib_block_iter)); 2858a808273aSShiraz Saleem biter->__sg = sglist; 2859a808273aSShiraz Saleem biter->__sg_nents = nents; 2860a808273aSShiraz Saleem 2861a808273aSShiraz Saleem /* Driver provides best block size to use */ 2862a808273aSShiraz Saleem biter->__pg_bit = __fls(pgsz); 2863a808273aSShiraz Saleem } 2864a808273aSShiraz Saleem EXPORT_SYMBOL(__rdma_block_iter_start); 2865a808273aSShiraz Saleem 2866a808273aSShiraz Saleem bool __rdma_block_iter_next(struct ib_block_iter *biter) 2867a808273aSShiraz Saleem { 2868a808273aSShiraz Saleem unsigned int block_offset; 2869a808273aSShiraz Saleem 2870a808273aSShiraz Saleem if (!biter->__sg_nents || !biter->__sg) 2871a808273aSShiraz Saleem return false; 2872a808273aSShiraz Saleem 2873a808273aSShiraz Saleem biter->__dma_addr = sg_dma_address(biter->__sg) + biter->__sg_advance; 2874a808273aSShiraz Saleem block_offset = biter->__dma_addr & (BIT_ULL(biter->__pg_bit) - 1); 2875a808273aSShiraz Saleem biter->__sg_advance += BIT_ULL(biter->__pg_bit) - block_offset; 2876a808273aSShiraz Saleem 2877a808273aSShiraz Saleem if (biter->__sg_advance >= sg_dma_len(biter->__sg)) { 2878a808273aSShiraz Saleem biter->__sg_advance = 0; 2879a808273aSShiraz Saleem biter->__sg = sg_next(biter->__sg); 2880a808273aSShiraz Saleem biter->__sg_nents--; 2881a808273aSShiraz Saleem } 2882a808273aSShiraz Saleem 2883a808273aSShiraz Saleem return true; 2884a808273aSShiraz Saleem } 2885a808273aSShiraz Saleem EXPORT_SYMBOL(__rdma_block_iter_next); 2886