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> 5351aab126SMaor Gottlieb #include <rdma/lag.h> 541da177e4SLinus Torvalds 55ed4c54e5SOr Gerlitz #include "core_priv.h" 56622db5b6SChuck Lever #include <trace/events/rdma_core.h> 571da177e4SLinus Torvalds 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", 997d8f3465SYixian Liu [IB_WC_MW_BIND_ERR] = "memory bind operation error", 1002b1b5b60SSagi Grimberg [IB_WC_BAD_RESP_ERR] = "bad response error", 1012b1b5b60SSagi Grimberg [IB_WC_LOC_ACCESS_ERR] = "local access error", 1027d8f3465SYixian Liu [IB_WC_REM_INV_REQ_ERR] = "remote 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 2301fb7f897SMark Bloch enum rdma_link_layer rdma_port_get_link_layer(struct ib_device *device, 2311fb7f897SMark Bloch u32 port_num) 232a3f5adafSEli Cohen { 23382901e3eSLeon Romanovsky enum rdma_transport_type lt; 2343023a1e9SKamal Heib if (device->ops.get_link_layer) 2353023a1e9SKamal Heib return device->ops.get_link_layer(device, port_num); 236a3f5adafSEli Cohen 23782901e3eSLeon Romanovsky lt = rdma_node_get_transport(device->node_type); 23882901e3eSLeon Romanovsky if (lt == RDMA_TRANSPORT_IB) 239a3f5adafSEli Cohen return IB_LINK_LAYER_INFINIBAND; 24082901e3eSLeon Romanovsky 241a3f5adafSEli Cohen return IB_LINK_LAYER_ETHERNET; 242a3f5adafSEli Cohen } 243a3f5adafSEli Cohen EXPORT_SYMBOL(rdma_port_get_link_layer); 244a3f5adafSEli Cohen 2451da177e4SLinus Torvalds /* Protection domains */ 2461da177e4SLinus Torvalds 24796249d70SJason Gunthorpe /** 2482988ca08SMauro Carvalho Chehab * __ib_alloc_pd - Allocates an unused protection domain. 24996249d70SJason Gunthorpe * @device: The device on which to allocate the protection domain. 250094c88f3Srd.dunlab@gmail.com * @flags: protection domain flags 251094c88f3Srd.dunlab@gmail.com * @caller: caller's build-time module name 25296249d70SJason Gunthorpe * 25396249d70SJason Gunthorpe * A protection domain object provides an association between QPs, shared 25496249d70SJason Gunthorpe * receive queues, address handles, memory regions, and memory windows. 25596249d70SJason Gunthorpe * 25696249d70SJason Gunthorpe * Every PD has a local_dma_lkey which can be used as the lkey value for local 25796249d70SJason Gunthorpe * memory operations. 25896249d70SJason Gunthorpe */ 259ed082d36SChristoph Hellwig struct ib_pd *__ib_alloc_pd(struct ib_device *device, unsigned int flags, 260ed082d36SChristoph Hellwig const char *caller) 2611da177e4SLinus Torvalds { 2621da177e4SLinus Torvalds struct ib_pd *pd; 263ed082d36SChristoph Hellwig int mr_access_flags = 0; 26421a428a0SLeon Romanovsky int ret; 2651da177e4SLinus Torvalds 26621a428a0SLeon Romanovsky pd = rdma_zalloc_drv_obj(device, ib_pd); 26721a428a0SLeon Romanovsky if (!pd) 26821a428a0SLeon Romanovsky return ERR_PTR(-ENOMEM); 2691da177e4SLinus Torvalds 2701da177e4SLinus Torvalds pd->device = device; 271b5e81bf5SRoland Dreier pd->uobject = NULL; 27250d46335SChristoph Hellwig pd->__internal_mr = NULL; 2731da177e4SLinus Torvalds atomic_set(&pd->usecnt, 0); 274ed082d36SChristoph Hellwig pd->flags = flags; 27596249d70SJason Gunthorpe 27613ef5539SLeon Romanovsky rdma_restrack_new(&pd->res, RDMA_RESTRACK_PD); 277b09c4d70SLeon Romanovsky rdma_restrack_set_name(&pd->res, caller); 27821a428a0SLeon Romanovsky 279ff23dfa1SShamir Rabinovitch ret = device->ops.alloc_pd(pd, NULL); 28021a428a0SLeon Romanovsky if (ret) { 28113ef5539SLeon Romanovsky rdma_restrack_put(&pd->res); 28221a428a0SLeon Romanovsky kfree(pd); 28321a428a0SLeon Romanovsky return ERR_PTR(ret); 28421a428a0SLeon Romanovsky } 285c34a23c2SLeon Romanovsky rdma_restrack_add(&pd->res); 28621a428a0SLeon Romanovsky 28786bee4c9SOr Gerlitz if (device->attrs.device_cap_flags & IB_DEVICE_LOCAL_DMA_LKEY) 28896249d70SJason Gunthorpe pd->local_dma_lkey = device->local_dma_lkey; 289ed082d36SChristoph Hellwig else 290ed082d36SChristoph Hellwig mr_access_flags |= IB_ACCESS_LOCAL_WRITE; 291ed082d36SChristoph Hellwig 292ed082d36SChristoph Hellwig if (flags & IB_PD_UNSAFE_GLOBAL_RKEY) { 293ed082d36SChristoph Hellwig pr_warn("%s: enabling unsafe global rkey\n", caller); 294ed082d36SChristoph Hellwig mr_access_flags |= IB_ACCESS_REMOTE_READ | IB_ACCESS_REMOTE_WRITE; 295ed082d36SChristoph Hellwig } 296ed082d36SChristoph Hellwig 297ed082d36SChristoph Hellwig if (mr_access_flags) { 29896249d70SJason Gunthorpe struct ib_mr *mr; 29996249d70SJason Gunthorpe 3003023a1e9SKamal Heib mr = pd->device->ops.get_dma_mr(pd, mr_access_flags); 30196249d70SJason Gunthorpe if (IS_ERR(mr)) { 30296249d70SJason Gunthorpe ib_dealloc_pd(pd); 3035ef990f0SChristoph Hellwig return ERR_CAST(mr); 3041da177e4SLinus Torvalds } 3051da177e4SLinus Torvalds 3065ef990f0SChristoph Hellwig mr->device = pd->device; 3075ef990f0SChristoph Hellwig mr->pd = pd; 308a0bc099aSMax Gurtovoy mr->type = IB_MR_TYPE_DMA; 3095ef990f0SChristoph Hellwig mr->uobject = NULL; 3105ef990f0SChristoph Hellwig mr->need_inval = false; 3115ef990f0SChristoph Hellwig 31250d46335SChristoph Hellwig pd->__internal_mr = mr; 313ed082d36SChristoph Hellwig 314ed082d36SChristoph Hellwig if (!(device->attrs.device_cap_flags & IB_DEVICE_LOCAL_DMA_LKEY)) 31550d46335SChristoph Hellwig pd->local_dma_lkey = pd->__internal_mr->lkey; 316ed082d36SChristoph Hellwig 317ed082d36SChristoph Hellwig if (flags & IB_PD_UNSAFE_GLOBAL_RKEY) 318ed082d36SChristoph Hellwig pd->unsafe_global_rkey = pd->__internal_mr->rkey; 31996249d70SJason Gunthorpe } 320ed082d36SChristoph Hellwig 3211da177e4SLinus Torvalds return pd; 3221da177e4SLinus Torvalds } 323ed082d36SChristoph Hellwig EXPORT_SYMBOL(__ib_alloc_pd); 3241da177e4SLinus Torvalds 3257dd78647SJason Gunthorpe /** 32691f57129SIsrael Rukshin * ib_dealloc_pd_user - Deallocates a protection domain. 3277dd78647SJason Gunthorpe * @pd: The protection domain to deallocate. 328c4367a26SShamir Rabinovitch * @udata: Valid user data or NULL for kernel object 3297dd78647SJason Gunthorpe * 3307dd78647SJason Gunthorpe * It is an error to call this function while any resources in the pd still 3317dd78647SJason Gunthorpe * exist. The caller is responsible to synchronously destroy them and 3327dd78647SJason Gunthorpe * guarantee no new allocations will happen. 3337dd78647SJason Gunthorpe */ 33491a7c58fSLeon Romanovsky int ib_dealloc_pd_user(struct ib_pd *pd, struct ib_udata *udata) 3351da177e4SLinus Torvalds { 3367dd78647SJason Gunthorpe int ret; 3371da177e4SLinus Torvalds 33850d46335SChristoph Hellwig if (pd->__internal_mr) { 339c4367a26SShamir Rabinovitch ret = pd->device->ops.dereg_mr(pd->__internal_mr, NULL); 3407dd78647SJason Gunthorpe WARN_ON(ret); 34150d46335SChristoph Hellwig pd->__internal_mr = NULL; 34296249d70SJason Gunthorpe } 34396249d70SJason Gunthorpe 3447dd78647SJason Gunthorpe /* uverbs manipulates usecnt with proper locking, while the kabi 34526caea5fSWenpeng Liang * requires the caller to guarantee we can't race here. 34626caea5fSWenpeng Liang */ 3477dd78647SJason Gunthorpe WARN_ON(atomic_read(&pd->usecnt)); 3481da177e4SLinus Torvalds 34991a7c58fSLeon Romanovsky ret = pd->device->ops.dealloc_pd(pd, udata); 35091a7c58fSLeon Romanovsky if (ret) 35191a7c58fSLeon Romanovsky return ret; 35291a7c58fSLeon Romanovsky 3539d5f8c20SLeon Romanovsky rdma_restrack_del(&pd->res); 35421a428a0SLeon Romanovsky kfree(pd); 35591a7c58fSLeon Romanovsky return ret; 3561da177e4SLinus Torvalds } 357c4367a26SShamir Rabinovitch EXPORT_SYMBOL(ib_dealloc_pd_user); 3581da177e4SLinus Torvalds 3591da177e4SLinus Torvalds /* Address handles */ 3601da177e4SLinus Torvalds 361d97099feSJason Gunthorpe /** 362d97099feSJason Gunthorpe * rdma_copy_ah_attr - Copy rdma ah attribute from source to destination. 363d97099feSJason Gunthorpe * @dest: Pointer to destination ah_attr. Contents of the destination 364d97099feSJason Gunthorpe * pointer is assumed to be invalid and attribute are overwritten. 365d97099feSJason Gunthorpe * @src: Pointer to source ah_attr. 366d97099feSJason Gunthorpe */ 367d97099feSJason Gunthorpe void rdma_copy_ah_attr(struct rdma_ah_attr *dest, 368d97099feSJason Gunthorpe const struct rdma_ah_attr *src) 369d97099feSJason Gunthorpe { 370d97099feSJason Gunthorpe *dest = *src; 371d97099feSJason Gunthorpe if (dest->grh.sgid_attr) 372d97099feSJason Gunthorpe rdma_hold_gid_attr(dest->grh.sgid_attr); 373d97099feSJason Gunthorpe } 374d97099feSJason Gunthorpe EXPORT_SYMBOL(rdma_copy_ah_attr); 375d97099feSJason Gunthorpe 376d97099feSJason Gunthorpe /** 377d97099feSJason Gunthorpe * rdma_replace_ah_attr - Replace valid ah_attr with new new one. 378d97099feSJason Gunthorpe * @old: Pointer to existing ah_attr which needs to be replaced. 379d97099feSJason Gunthorpe * old is assumed to be valid or zero'd 380d97099feSJason Gunthorpe * @new: Pointer to the new ah_attr. 381d97099feSJason Gunthorpe * 382d97099feSJason Gunthorpe * rdma_replace_ah_attr() first releases any reference in the old ah_attr if 383d97099feSJason Gunthorpe * old the ah_attr is valid; after that it copies the new attribute and holds 384d97099feSJason Gunthorpe * the reference to the replaced ah_attr. 385d97099feSJason Gunthorpe */ 386d97099feSJason Gunthorpe void rdma_replace_ah_attr(struct rdma_ah_attr *old, 387d97099feSJason Gunthorpe const struct rdma_ah_attr *new) 388d97099feSJason Gunthorpe { 389d97099feSJason Gunthorpe rdma_destroy_ah_attr(old); 390d97099feSJason Gunthorpe *old = *new; 391d97099feSJason Gunthorpe if (old->grh.sgid_attr) 392d97099feSJason Gunthorpe rdma_hold_gid_attr(old->grh.sgid_attr); 393d97099feSJason Gunthorpe } 394d97099feSJason Gunthorpe EXPORT_SYMBOL(rdma_replace_ah_attr); 395d97099feSJason Gunthorpe 396d97099feSJason Gunthorpe /** 397d97099feSJason Gunthorpe * rdma_move_ah_attr - Move ah_attr pointed by source to destination. 398d97099feSJason Gunthorpe * @dest: Pointer to destination ah_attr to copy to. 399d97099feSJason Gunthorpe * dest is assumed to be valid or zero'd 400d97099feSJason Gunthorpe * @src: Pointer to the new ah_attr. 401d97099feSJason Gunthorpe * 402d97099feSJason Gunthorpe * rdma_move_ah_attr() first releases any reference in the destination ah_attr 403d97099feSJason Gunthorpe * if it is valid. This also transfers ownership of internal references from 404d97099feSJason Gunthorpe * src to dest, making src invalid in the process. No new reference of the src 405d97099feSJason Gunthorpe * ah_attr is taken. 406d97099feSJason Gunthorpe */ 407d97099feSJason Gunthorpe void rdma_move_ah_attr(struct rdma_ah_attr *dest, struct rdma_ah_attr *src) 408d97099feSJason Gunthorpe { 409d97099feSJason Gunthorpe rdma_destroy_ah_attr(dest); 410d97099feSJason Gunthorpe *dest = *src; 411d97099feSJason Gunthorpe src->grh.sgid_attr = NULL; 412d97099feSJason Gunthorpe } 413d97099feSJason Gunthorpe EXPORT_SYMBOL(rdma_move_ah_attr); 414d97099feSJason Gunthorpe 4158d9ec9adSJason Gunthorpe /* 4168d9ec9adSJason Gunthorpe * Validate that the rdma_ah_attr is valid for the device before passing it 4178d9ec9adSJason Gunthorpe * off to the driver. 4188d9ec9adSJason Gunthorpe */ 4198d9ec9adSJason Gunthorpe static int rdma_check_ah_attr(struct ib_device *device, 4208d9ec9adSJason Gunthorpe struct rdma_ah_attr *ah_attr) 4218d9ec9adSJason Gunthorpe { 4228d9ec9adSJason Gunthorpe if (!rdma_is_port_valid(device, ah_attr->port_num)) 4238d9ec9adSJason Gunthorpe return -EINVAL; 4248d9ec9adSJason Gunthorpe 425b02289b3SArtemy Kovalyov if ((rdma_is_grh_required(device, ah_attr->port_num) || 426b02289b3SArtemy Kovalyov ah_attr->type == RDMA_AH_ATTR_TYPE_ROCE) && 4278d9ec9adSJason Gunthorpe !(ah_attr->ah_flags & IB_AH_GRH)) 4288d9ec9adSJason Gunthorpe return -EINVAL; 4298d9ec9adSJason Gunthorpe 4308d9ec9adSJason Gunthorpe if (ah_attr->grh.sgid_attr) { 4318d9ec9adSJason Gunthorpe /* 4328d9ec9adSJason Gunthorpe * Make sure the passed sgid_attr is consistent with the 4338d9ec9adSJason Gunthorpe * parameters 4348d9ec9adSJason Gunthorpe */ 4358d9ec9adSJason Gunthorpe if (ah_attr->grh.sgid_attr->index != ah_attr->grh.sgid_index || 4368d9ec9adSJason Gunthorpe ah_attr->grh.sgid_attr->port_num != ah_attr->port_num) 4378d9ec9adSJason Gunthorpe return -EINVAL; 4388d9ec9adSJason Gunthorpe } 4398d9ec9adSJason Gunthorpe return 0; 4408d9ec9adSJason Gunthorpe } 4418d9ec9adSJason Gunthorpe 4428d9ec9adSJason Gunthorpe /* 4438d9ec9adSJason Gunthorpe * If the ah requires a GRH then ensure that sgid_attr pointer is filled in. 4448d9ec9adSJason Gunthorpe * On success the caller is responsible to call rdma_unfill_sgid_attr(). 4458d9ec9adSJason Gunthorpe */ 4468d9ec9adSJason Gunthorpe static int rdma_fill_sgid_attr(struct ib_device *device, 4478d9ec9adSJason Gunthorpe struct rdma_ah_attr *ah_attr, 4488d9ec9adSJason Gunthorpe const struct ib_gid_attr **old_sgid_attr) 4498d9ec9adSJason Gunthorpe { 4508d9ec9adSJason Gunthorpe const struct ib_gid_attr *sgid_attr; 4518d9ec9adSJason Gunthorpe struct ib_global_route *grh; 4528d9ec9adSJason Gunthorpe int ret; 4538d9ec9adSJason Gunthorpe 4548d9ec9adSJason Gunthorpe *old_sgid_attr = ah_attr->grh.sgid_attr; 4558d9ec9adSJason Gunthorpe 4568d9ec9adSJason Gunthorpe ret = rdma_check_ah_attr(device, ah_attr); 4578d9ec9adSJason Gunthorpe if (ret) 4588d9ec9adSJason Gunthorpe return ret; 4598d9ec9adSJason Gunthorpe 4608d9ec9adSJason Gunthorpe if (!(ah_attr->ah_flags & IB_AH_GRH)) 4618d9ec9adSJason Gunthorpe return 0; 4628d9ec9adSJason Gunthorpe 4638d9ec9adSJason Gunthorpe grh = rdma_ah_retrieve_grh(ah_attr); 4648d9ec9adSJason Gunthorpe if (grh->sgid_attr) 4658d9ec9adSJason Gunthorpe return 0; 4668d9ec9adSJason Gunthorpe 4678d9ec9adSJason Gunthorpe sgid_attr = 4688d9ec9adSJason Gunthorpe rdma_get_gid_attr(device, ah_attr->port_num, grh->sgid_index); 4698d9ec9adSJason Gunthorpe if (IS_ERR(sgid_attr)) 4708d9ec9adSJason Gunthorpe return PTR_ERR(sgid_attr); 4718d9ec9adSJason Gunthorpe 4728d9ec9adSJason Gunthorpe /* Move ownerhip of the kref into the ah_attr */ 4738d9ec9adSJason Gunthorpe grh->sgid_attr = sgid_attr; 4748d9ec9adSJason Gunthorpe return 0; 4758d9ec9adSJason Gunthorpe } 4768d9ec9adSJason Gunthorpe 4778d9ec9adSJason Gunthorpe static void rdma_unfill_sgid_attr(struct rdma_ah_attr *ah_attr, 4788d9ec9adSJason Gunthorpe const struct ib_gid_attr *old_sgid_attr) 4798d9ec9adSJason Gunthorpe { 4808d9ec9adSJason Gunthorpe /* 4818d9ec9adSJason Gunthorpe * Fill didn't change anything, the caller retains ownership of 4828d9ec9adSJason Gunthorpe * whatever it passed 4838d9ec9adSJason Gunthorpe */ 4848d9ec9adSJason Gunthorpe if (ah_attr->grh.sgid_attr == old_sgid_attr) 4858d9ec9adSJason Gunthorpe return; 4868d9ec9adSJason Gunthorpe 4878d9ec9adSJason Gunthorpe /* 4888d9ec9adSJason Gunthorpe * Otherwise, we need to undo what rdma_fill_sgid_attr so the caller 4898d9ec9adSJason Gunthorpe * doesn't see any change in the rdma_ah_attr. If we get here 4908d9ec9adSJason Gunthorpe * old_sgid_attr is NULL. 4918d9ec9adSJason Gunthorpe */ 4928d9ec9adSJason Gunthorpe rdma_destroy_ah_attr(ah_attr); 4938d9ec9adSJason Gunthorpe } 4948d9ec9adSJason Gunthorpe 4951a1f460fSJason Gunthorpe static const struct ib_gid_attr * 4961a1f460fSJason Gunthorpe rdma_update_sgid_attr(struct rdma_ah_attr *ah_attr, 4971a1f460fSJason Gunthorpe const struct ib_gid_attr *old_attr) 4981a1f460fSJason Gunthorpe { 4991a1f460fSJason Gunthorpe if (old_attr) 5001a1f460fSJason Gunthorpe rdma_put_gid_attr(old_attr); 5011a1f460fSJason Gunthorpe if (ah_attr->ah_flags & IB_AH_GRH) { 5021a1f460fSJason Gunthorpe rdma_hold_gid_attr(ah_attr->grh.sgid_attr); 5031a1f460fSJason Gunthorpe return ah_attr->grh.sgid_attr; 5041a1f460fSJason Gunthorpe } 5051a1f460fSJason Gunthorpe return NULL; 5061a1f460fSJason Gunthorpe } 5071a1f460fSJason Gunthorpe 5085cda6587SParav Pandit static struct ib_ah *_rdma_create_ah(struct ib_pd *pd, 5095cda6587SParav Pandit struct rdma_ah_attr *ah_attr, 510b090c4e3SGal Pressman u32 flags, 51151aab126SMaor Gottlieb struct ib_udata *udata, 51251aab126SMaor Gottlieb struct net_device *xmit_slave) 5131da177e4SLinus Torvalds { 514fa5d010cSMaor Gottlieb struct rdma_ah_init_attr init_attr = {}; 515d3456914SLeon Romanovsky struct ib_device *device = pd->device; 5161da177e4SLinus Torvalds struct ib_ah *ah; 517d3456914SLeon Romanovsky int ret; 5181da177e4SLinus Torvalds 519b090c4e3SGal Pressman might_sleep_if(flags & RDMA_CREATE_AH_SLEEPABLE); 520b090c4e3SGal Pressman 5218c030d78SGal Pressman if (!udata && !device->ops.create_ah) 5220584c47bSKamal Heib return ERR_PTR(-EOPNOTSUPP); 5230584c47bSKamal Heib 524d3456914SLeon Romanovsky ah = rdma_zalloc_drv_obj_gfp( 525d3456914SLeon Romanovsky device, ib_ah, 526d3456914SLeon Romanovsky (flags & RDMA_CREATE_AH_SLEEPABLE) ? GFP_KERNEL : GFP_ATOMIC); 527d3456914SLeon Romanovsky if (!ah) 528d3456914SLeon Romanovsky return ERR_PTR(-ENOMEM); 5291da177e4SLinus Torvalds 530d3456914SLeon Romanovsky ah->device = device; 5311da177e4SLinus Torvalds ah->pd = pd; 53244c58487SDasaratharaman Chandramouli ah->type = ah_attr->type; 5331a1f460fSJason Gunthorpe ah->sgid_attr = rdma_update_sgid_attr(ah_attr, NULL); 534fa5d010cSMaor Gottlieb init_attr.ah_attr = ah_attr; 535fa5d010cSMaor Gottlieb init_attr.flags = flags; 53651aab126SMaor Gottlieb init_attr.xmit_slave = xmit_slave; 5371a1f460fSJason Gunthorpe 538676a80adSJason Gunthorpe if (udata) 539676a80adSJason Gunthorpe ret = device->ops.create_user_ah(ah, &init_attr, udata); 540676a80adSJason Gunthorpe else 541676a80adSJason Gunthorpe ret = device->ops.create_ah(ah, &init_attr, NULL); 542d3456914SLeon Romanovsky if (ret) { 543d3456914SLeon Romanovsky kfree(ah); 544d3456914SLeon Romanovsky return ERR_PTR(ret); 5451da177e4SLinus Torvalds } 5461da177e4SLinus Torvalds 547d3456914SLeon Romanovsky atomic_inc(&pd->usecnt); 5481da177e4SLinus Torvalds return ah; 5491da177e4SLinus Torvalds } 5505cda6587SParav Pandit 5518d9ec9adSJason Gunthorpe /** 5528d9ec9adSJason Gunthorpe * rdma_create_ah - Creates an address handle for the 5538d9ec9adSJason Gunthorpe * given address vector. 5548d9ec9adSJason Gunthorpe * @pd: The protection domain associated with the address handle. 5558d9ec9adSJason Gunthorpe * @ah_attr: The attributes of the address vector. 556b090c4e3SGal Pressman * @flags: Create address handle flags (see enum rdma_create_ah_flags). 5578d9ec9adSJason Gunthorpe * 5588d9ec9adSJason Gunthorpe * It returns 0 on success and returns appropriate error code on error. 5598d9ec9adSJason Gunthorpe * The address handle is used to reference a local or global destination 5608d9ec9adSJason Gunthorpe * in all UD QP post sends. 5618d9ec9adSJason Gunthorpe */ 562b090c4e3SGal Pressman struct ib_ah *rdma_create_ah(struct ib_pd *pd, struct rdma_ah_attr *ah_attr, 563b090c4e3SGal Pressman u32 flags) 5645cda6587SParav Pandit { 5658d9ec9adSJason Gunthorpe const struct ib_gid_attr *old_sgid_attr; 56651aab126SMaor Gottlieb struct net_device *slave; 5678d9ec9adSJason Gunthorpe struct ib_ah *ah; 5688d9ec9adSJason Gunthorpe int ret; 5698d9ec9adSJason Gunthorpe 5708d9ec9adSJason Gunthorpe ret = rdma_fill_sgid_attr(pd->device, ah_attr, &old_sgid_attr); 5718d9ec9adSJason Gunthorpe if (ret) 5728d9ec9adSJason Gunthorpe return ERR_PTR(ret); 57351aab126SMaor Gottlieb slave = rdma_lag_get_ah_roce_slave(pd->device, ah_attr, 57451aab126SMaor Gottlieb (flags & RDMA_CREATE_AH_SLEEPABLE) ? 57551aab126SMaor Gottlieb GFP_KERNEL : GFP_ATOMIC); 57651aab126SMaor Gottlieb if (IS_ERR(slave)) { 57751aab126SMaor Gottlieb rdma_unfill_sgid_attr(ah_attr, old_sgid_attr); 57851aab126SMaor Gottlieb return (void *)slave; 57951aab126SMaor Gottlieb } 58051aab126SMaor Gottlieb ah = _rdma_create_ah(pd, ah_attr, flags, NULL, slave); 58151aab126SMaor Gottlieb rdma_lag_put_ah_roce_slave(slave); 5828d9ec9adSJason Gunthorpe rdma_unfill_sgid_attr(ah_attr, old_sgid_attr); 5838d9ec9adSJason Gunthorpe return ah; 5845cda6587SParav Pandit } 5850a18cfe4SDasaratharaman Chandramouli EXPORT_SYMBOL(rdma_create_ah); 5861da177e4SLinus Torvalds 5875cda6587SParav Pandit /** 5885cda6587SParav Pandit * rdma_create_user_ah - Creates an address handle for the 5895cda6587SParav Pandit * given address vector. 5905cda6587SParav Pandit * It resolves destination mac address for ah attribute of RoCE type. 5915cda6587SParav Pandit * @pd: The protection domain associated with the address handle. 5925cda6587SParav Pandit * @ah_attr: The attributes of the address vector. 5935cda6587SParav Pandit * @udata: pointer to user's input output buffer information need by 5945cda6587SParav Pandit * provider driver. 5955cda6587SParav Pandit * 5965cda6587SParav Pandit * It returns 0 on success and returns appropriate error code on error. 5975cda6587SParav Pandit * The address handle is used to reference a local or global destination 5985cda6587SParav Pandit * in all UD QP post sends. 5995cda6587SParav Pandit */ 6005cda6587SParav Pandit struct ib_ah *rdma_create_user_ah(struct ib_pd *pd, 6015cda6587SParav Pandit struct rdma_ah_attr *ah_attr, 6025cda6587SParav Pandit struct ib_udata *udata) 6035cda6587SParav Pandit { 6048d9ec9adSJason Gunthorpe const struct ib_gid_attr *old_sgid_attr; 6058d9ec9adSJason Gunthorpe struct ib_ah *ah; 6065cda6587SParav Pandit int err; 6075cda6587SParav Pandit 6088d9ec9adSJason Gunthorpe err = rdma_fill_sgid_attr(pd->device, ah_attr, &old_sgid_attr); 6098d9ec9adSJason Gunthorpe if (err) 6108d9ec9adSJason Gunthorpe return ERR_PTR(err); 6118d9ec9adSJason Gunthorpe 6125cda6587SParav Pandit if (ah_attr->type == RDMA_AH_ATTR_TYPE_ROCE) { 6135cda6587SParav Pandit err = ib_resolve_eth_dmac(pd->device, ah_attr); 6148d9ec9adSJason Gunthorpe if (err) { 6158d9ec9adSJason Gunthorpe ah = ERR_PTR(err); 6168d9ec9adSJason Gunthorpe goto out; 6178d9ec9adSJason Gunthorpe } 6185cda6587SParav Pandit } 6195cda6587SParav Pandit 62051aab126SMaor Gottlieb ah = _rdma_create_ah(pd, ah_attr, RDMA_CREATE_AH_SLEEPABLE, 62151aab126SMaor Gottlieb udata, NULL); 6228d9ec9adSJason Gunthorpe 6238d9ec9adSJason Gunthorpe out: 6248d9ec9adSJason Gunthorpe rdma_unfill_sgid_attr(ah_attr, old_sgid_attr); 6258d9ec9adSJason Gunthorpe return ah; 6265cda6587SParav Pandit } 6275cda6587SParav Pandit EXPORT_SYMBOL(rdma_create_user_ah); 6285cda6587SParav Pandit 629850d8fd7SMoni Shoua int ib_get_rdma_header_version(const union rdma_network_hdr *hdr) 630c865f246SSomnath Kotur { 631c865f246SSomnath Kotur const struct iphdr *ip4h = (struct iphdr *)&hdr->roce4grh; 632c865f246SSomnath Kotur struct iphdr ip4h_checked; 633c865f246SSomnath Kotur const struct ipv6hdr *ip6h = (struct ipv6hdr *)&hdr->ibgrh; 634c865f246SSomnath Kotur 635c865f246SSomnath Kotur /* If it's IPv6, the version must be 6, otherwise, the first 636c865f246SSomnath Kotur * 20 bytes (before the IPv4 header) are garbled. 637c865f246SSomnath Kotur */ 638c865f246SSomnath Kotur if (ip6h->version != 6) 639c865f246SSomnath Kotur return (ip4h->version == 4) ? 4 : 0; 640c865f246SSomnath Kotur /* version may be 6 or 4 because the first 20 bytes could be garbled */ 641c865f246SSomnath Kotur 642c865f246SSomnath Kotur /* RoCE v2 requires no options, thus header length 643c865f246SSomnath Kotur * must be 5 words 644c865f246SSomnath Kotur */ 645c865f246SSomnath Kotur if (ip4h->ihl != 5) 646c865f246SSomnath Kotur return 6; 647c865f246SSomnath Kotur 648c865f246SSomnath Kotur /* Verify checksum. 649c865f246SSomnath Kotur * We can't write on scattered buffers so we need to copy to 650c865f246SSomnath Kotur * temp buffer. 651c865f246SSomnath Kotur */ 652c865f246SSomnath Kotur memcpy(&ip4h_checked, ip4h, sizeof(ip4h_checked)); 653c865f246SSomnath Kotur ip4h_checked.check = 0; 654c865f246SSomnath Kotur ip4h_checked.check = ip_fast_csum((u8 *)&ip4h_checked, 5); 655c865f246SSomnath Kotur /* if IPv4 header checksum is OK, believe it */ 656c865f246SSomnath Kotur if (ip4h->check == ip4h_checked.check) 657c865f246SSomnath Kotur return 4; 658c865f246SSomnath Kotur return 6; 659c865f246SSomnath Kotur } 660850d8fd7SMoni Shoua EXPORT_SYMBOL(ib_get_rdma_header_version); 661c865f246SSomnath Kotur 662c865f246SSomnath Kotur static enum rdma_network_type ib_get_net_type_by_grh(struct ib_device *device, 6631fb7f897SMark Bloch u32 port_num, 664c865f246SSomnath Kotur const struct ib_grh *grh) 665c865f246SSomnath Kotur { 666c865f246SSomnath Kotur int grh_version; 667c865f246SSomnath Kotur 668c865f246SSomnath Kotur if (rdma_protocol_ib(device, port_num)) 669c865f246SSomnath Kotur return RDMA_NETWORK_IB; 670c865f246SSomnath Kotur 671850d8fd7SMoni Shoua grh_version = ib_get_rdma_header_version((union rdma_network_hdr *)grh); 672c865f246SSomnath Kotur 673c865f246SSomnath Kotur if (grh_version == 4) 674c865f246SSomnath Kotur return RDMA_NETWORK_IPV4; 675c865f246SSomnath Kotur 676c865f246SSomnath Kotur if (grh->next_hdr == IPPROTO_UDP) 677c865f246SSomnath Kotur return RDMA_NETWORK_IPV6; 678c865f246SSomnath Kotur 679c865f246SSomnath Kotur return RDMA_NETWORK_ROCE_V1; 680c865f246SSomnath Kotur } 681c865f246SSomnath Kotur 682dbf727deSMatan Barak struct find_gid_index_context { 683dbf727deSMatan Barak u16 vlan_id; 684c865f246SSomnath Kotur enum ib_gid_type gid_type; 685dbf727deSMatan Barak }; 686dbf727deSMatan Barak 687dbf727deSMatan Barak static bool find_gid_index(const union ib_gid *gid, 688dbf727deSMatan Barak const struct ib_gid_attr *gid_attr, 689dbf727deSMatan Barak void *context) 690dbf727deSMatan Barak { 691b0dd0d33SParav Pandit struct find_gid_index_context *ctx = context; 692777a8b32SParav Pandit u16 vlan_id = 0xffff; 693777a8b32SParav Pandit int ret; 694dbf727deSMatan Barak 695c865f246SSomnath Kotur if (ctx->gid_type != gid_attr->gid_type) 696c865f246SSomnath Kotur return false; 697c865f246SSomnath Kotur 698777a8b32SParav Pandit ret = rdma_read_gid_l2_fields(gid_attr, &vlan_id, NULL); 699777a8b32SParav Pandit if (ret) 700dbf727deSMatan Barak return false; 701dbf727deSMatan Barak 702777a8b32SParav Pandit return ctx->vlan_id == vlan_id; 703dbf727deSMatan Barak } 704dbf727deSMatan Barak 705b7403217SParav Pandit static const struct ib_gid_attr * 7061fb7f897SMark Bloch get_sgid_attr_from_eth(struct ib_device *device, u32 port_num, 707dbf727deSMatan Barak u16 vlan_id, const union ib_gid *sgid, 708b7403217SParav Pandit enum ib_gid_type gid_type) 709dbf727deSMatan Barak { 710c865f246SSomnath Kotur struct find_gid_index_context context = {.vlan_id = vlan_id, 711c865f246SSomnath Kotur .gid_type = gid_type}; 712dbf727deSMatan Barak 713b7403217SParav Pandit return rdma_find_gid_by_filter(device, sgid, port_num, find_gid_index, 714b7403217SParav Pandit &context); 715dbf727deSMatan Barak } 716dbf727deSMatan Barak 717850d8fd7SMoni Shoua int ib_get_gids_from_rdma_hdr(const union rdma_network_hdr *hdr, 718c865f246SSomnath Kotur enum rdma_network_type net_type, 719c865f246SSomnath Kotur union ib_gid *sgid, union ib_gid *dgid) 720c865f246SSomnath Kotur { 721c865f246SSomnath Kotur struct sockaddr_in src_in; 722c865f246SSomnath Kotur struct sockaddr_in dst_in; 723c865f246SSomnath Kotur __be32 src_saddr, dst_saddr; 724c865f246SSomnath Kotur 725c865f246SSomnath Kotur if (!sgid || !dgid) 726c865f246SSomnath Kotur return -EINVAL; 727c865f246SSomnath Kotur 728c865f246SSomnath Kotur if (net_type == RDMA_NETWORK_IPV4) { 729c865f246SSomnath Kotur memcpy(&src_in.sin_addr.s_addr, 730c865f246SSomnath Kotur &hdr->roce4grh.saddr, 4); 731c865f246SSomnath Kotur memcpy(&dst_in.sin_addr.s_addr, 732c865f246SSomnath Kotur &hdr->roce4grh.daddr, 4); 733c865f246SSomnath Kotur src_saddr = src_in.sin_addr.s_addr; 734c865f246SSomnath Kotur dst_saddr = dst_in.sin_addr.s_addr; 735c865f246SSomnath Kotur ipv6_addr_set_v4mapped(src_saddr, 736c865f246SSomnath Kotur (struct in6_addr *)sgid); 737c865f246SSomnath Kotur ipv6_addr_set_v4mapped(dst_saddr, 738c865f246SSomnath Kotur (struct in6_addr *)dgid); 739c865f246SSomnath Kotur return 0; 740c865f246SSomnath Kotur } else if (net_type == RDMA_NETWORK_IPV6 || 7411c15b4f2SAvihai Horon net_type == RDMA_NETWORK_IB || RDMA_NETWORK_ROCE_V1) { 742c865f246SSomnath Kotur *dgid = hdr->ibgrh.dgid; 743c865f246SSomnath Kotur *sgid = hdr->ibgrh.sgid; 744c865f246SSomnath Kotur return 0; 745c865f246SSomnath Kotur } else { 746c865f246SSomnath Kotur return -EINVAL; 747c865f246SSomnath Kotur } 748c865f246SSomnath Kotur } 749850d8fd7SMoni Shoua EXPORT_SYMBOL(ib_get_gids_from_rdma_hdr); 750c865f246SSomnath Kotur 7511060f865SParav Pandit /* Resolve destination mac address and hop limit for unicast destination 7521060f865SParav Pandit * GID entry, considering the source GID entry as well. 7531060f865SParav Pandit * ah_attribute must have have valid port_num, sgid_index. 7541060f865SParav Pandit */ 7551060f865SParav Pandit static int ib_resolve_unicast_gid_dmac(struct ib_device *device, 7561060f865SParav Pandit struct rdma_ah_attr *ah_attr) 7571060f865SParav Pandit { 758b7403217SParav Pandit struct ib_global_route *grh = rdma_ah_retrieve_grh(ah_attr); 759b7403217SParav Pandit const struct ib_gid_attr *sgid_attr = grh->sgid_attr; 7601060f865SParav Pandit int hop_limit = 0xff; 761b7403217SParav Pandit int ret = 0; 7621060f865SParav Pandit 76356d0a7d9SParav Pandit /* If destination is link local and source GID is RoCEv1, 76456d0a7d9SParav Pandit * IP stack is not used. 76556d0a7d9SParav Pandit */ 76656d0a7d9SParav Pandit if (rdma_link_local_addr((struct in6_addr *)grh->dgid.raw) && 767b7403217SParav Pandit sgid_attr->gid_type == IB_GID_TYPE_ROCE) { 76856d0a7d9SParav Pandit rdma_get_ll_mac((struct in6_addr *)grh->dgid.raw, 76956d0a7d9SParav Pandit ah_attr->roce.dmac); 770b7403217SParav Pandit return ret; 77156d0a7d9SParav Pandit } 77256d0a7d9SParav Pandit 773b7403217SParav Pandit ret = rdma_addr_find_l2_eth_by_grh(&sgid_attr->gid, &grh->dgid, 7741060f865SParav Pandit ah_attr->roce.dmac, 7750e9d2c19SParav Pandit sgid_attr, &hop_limit); 7761060f865SParav Pandit 7771060f865SParav Pandit grh->hop_limit = hop_limit; 7781060f865SParav Pandit return ret; 7791060f865SParav Pandit } 7801060f865SParav Pandit 78128b5b3a2SGustavo A. R. Silva /* 782f6bdb142SParav Pandit * This function initializes address handle attributes from the incoming packet. 78328b5b3a2SGustavo A. R. Silva * Incoming packet has dgid of the receiver node on which this code is 78428b5b3a2SGustavo A. R. Silva * getting executed and, sgid contains the GID of the sender. 78528b5b3a2SGustavo A. R. Silva * 78628b5b3a2SGustavo A. R. Silva * When resolving mac address of destination, the arrived dgid is used 78728b5b3a2SGustavo A. R. Silva * as sgid and, sgid is used as dgid because sgid contains destinations 78828b5b3a2SGustavo A. R. Silva * GID whom to respond to. 78928b5b3a2SGustavo A. R. Silva * 790b7403217SParav Pandit * On success the caller is responsible to call rdma_destroy_ah_attr on the 791b7403217SParav Pandit * attr. 79228b5b3a2SGustavo A. R. Silva */ 7931fb7f897SMark Bloch int ib_init_ah_attr_from_wc(struct ib_device *device, u32 port_num, 79473cdaaeeSIra Weiny const struct ib_wc *wc, const struct ib_grh *grh, 79590898850SDasaratharaman Chandramouli struct rdma_ah_attr *ah_attr) 796513789edSHal Rosenstock { 797513789edSHal Rosenstock u32 flow_class; 798513789edSHal Rosenstock int ret; 799c865f246SSomnath Kotur enum rdma_network_type net_type = RDMA_NETWORK_IB; 800c865f246SSomnath Kotur enum ib_gid_type gid_type = IB_GID_TYPE_IB; 801b7403217SParav Pandit const struct ib_gid_attr *sgid_attr; 802c3efe750SMatan Barak int hoplimit = 0xff; 803c865f246SSomnath Kotur union ib_gid dgid; 804c865f246SSomnath Kotur union ib_gid sgid; 805513789edSHal Rosenstock 80679364227SRoland Dreier might_sleep(); 80779364227SRoland Dreier 8084e00d694SSean Hefty memset(ah_attr, 0, sizeof *ah_attr); 80944c58487SDasaratharaman Chandramouli ah_attr->type = rdma_ah_find_type(device, port_num); 810227128fcSMichael Wang if (rdma_cap_eth_ah(device, port_num)) { 811c865f246SSomnath Kotur if (wc->wc_flags & IB_WC_WITH_NETWORK_HDR_TYPE) 812c865f246SSomnath Kotur net_type = wc->network_hdr_type; 813c865f246SSomnath Kotur else 814c865f246SSomnath Kotur net_type = ib_get_net_type_by_grh(device, port_num, grh); 815c865f246SSomnath Kotur gid_type = ib_network_to_gid_type(net_type); 816c865f246SSomnath Kotur } 817850d8fd7SMoni Shoua ret = ib_get_gids_from_rdma_hdr((union rdma_network_hdr *)grh, net_type, 818c865f246SSomnath Kotur &sgid, &dgid); 819c865f246SSomnath Kotur if (ret) 820c865f246SSomnath Kotur return ret; 821c865f246SSomnath Kotur 8221060f865SParav Pandit rdma_ah_set_sl(ah_attr, wc->sl); 8231060f865SParav Pandit rdma_ah_set_port_num(ah_attr, port_num); 8241060f865SParav Pandit 825c865f246SSomnath Kotur if (rdma_protocol_roce(device, port_num)) { 826dbf727deSMatan Barak u16 vlan_id = wc->wc_flags & IB_WC_WITH_VLAN ? 827dbf727deSMatan Barak wc->vlan_id : 0xffff; 828dbf727deSMatan Barak 829dd5f03beSMatan Barak if (!(wc->wc_flags & IB_WC_GRH)) 830dd5f03beSMatan Barak return -EPROTOTYPE; 831dd5f03beSMatan Barak 832b7403217SParav Pandit sgid_attr = get_sgid_attr_from_eth(device, port_num, 8331060f865SParav Pandit vlan_id, &dgid, 834b7403217SParav Pandit gid_type); 835b7403217SParav Pandit if (IS_ERR(sgid_attr)) 836b7403217SParav Pandit return PTR_ERR(sgid_attr); 83720029832SMatan Barak 8381060f865SParav Pandit flow_class = be32_to_cpu(grh->version_tclass_flow); 839b7403217SParav Pandit rdma_move_grh_sgid_attr(ah_attr, 840b7403217SParav Pandit &sgid, 8411060f865SParav Pandit flow_class & 0xFFFFF, 842b7403217SParav Pandit hoplimit, 843b7403217SParav Pandit (flow_class >> 20) & 0xFF, 844b7403217SParav Pandit sgid_attr); 845b7403217SParav Pandit 846b7403217SParav Pandit ret = ib_resolve_unicast_gid_dmac(device, ah_attr); 847b7403217SParav Pandit if (ret) 848b7403217SParav Pandit rdma_destroy_ah_attr(ah_attr); 849b7403217SParav Pandit 850b7403217SParav Pandit return ret; 8511060f865SParav Pandit } else { 852d8966fcdSDasaratharaman Chandramouli rdma_ah_set_dlid(ah_attr, wc->slid); 853d8966fcdSDasaratharaman Chandramouli rdma_ah_set_path_bits(ah_attr, wc->dlid_path_bits); 854513789edSHal Rosenstock 855b7403217SParav Pandit if ((wc->wc_flags & IB_WC_GRH) == 0) 856b7403217SParav Pandit return 0; 857513789edSHal Rosenstock 858b7403217SParav Pandit if (dgid.global.interface_id != 859b7403217SParav Pandit cpu_to_be64(IB_SA_WELL_KNOWN_GUID)) { 860b7403217SParav Pandit sgid_attr = rdma_find_gid_by_port( 861b7403217SParav Pandit device, &dgid, IB_GID_TYPE_IB, port_num, NULL); 862b7403217SParav Pandit } else 863b7403217SParav Pandit sgid_attr = rdma_get_gid_attr(device, port_num, 0); 864b7403217SParav Pandit 865b7403217SParav Pandit if (IS_ERR(sgid_attr)) 866b7403217SParav Pandit return PTR_ERR(sgid_attr); 867497677abSHal Rosenstock flow_class = be32_to_cpu(grh->version_tclass_flow); 868b7403217SParav Pandit rdma_move_grh_sgid_attr(ah_attr, 869b7403217SParav Pandit &sgid, 870d8966fcdSDasaratharaman Chandramouli flow_class & 0xFFFFF, 871b7403217SParav Pandit hoplimit, 872b7403217SParav Pandit (flow_class >> 20) & 0xFF, 873b7403217SParav Pandit sgid_attr); 874b7403217SParav Pandit 8754e00d694SSean Hefty return 0; 8764e00d694SSean Hefty } 8771060f865SParav Pandit } 878f6bdb142SParav Pandit EXPORT_SYMBOL(ib_init_ah_attr_from_wc); 8794e00d694SSean Hefty 8808d9ec9adSJason Gunthorpe /** 8818d9ec9adSJason Gunthorpe * rdma_move_grh_sgid_attr - Sets the sgid attribute of GRH, taking ownership 8828d9ec9adSJason Gunthorpe * of the reference 8838d9ec9adSJason Gunthorpe * 8848d9ec9adSJason Gunthorpe * @attr: Pointer to AH attribute structure 8858d9ec9adSJason Gunthorpe * @dgid: Destination GID 8868d9ec9adSJason Gunthorpe * @flow_label: Flow label 8878d9ec9adSJason Gunthorpe * @hop_limit: Hop limit 8888d9ec9adSJason Gunthorpe * @traffic_class: traffic class 8898d9ec9adSJason Gunthorpe * @sgid_attr: Pointer to SGID attribute 8908d9ec9adSJason Gunthorpe * 8918d9ec9adSJason Gunthorpe * This takes ownership of the sgid_attr reference. The caller must ensure 8928d9ec9adSJason Gunthorpe * rdma_destroy_ah_attr() is called before destroying the rdma_ah_attr after 8938d9ec9adSJason Gunthorpe * calling this function. 8948d9ec9adSJason Gunthorpe */ 8958d9ec9adSJason Gunthorpe void rdma_move_grh_sgid_attr(struct rdma_ah_attr *attr, union ib_gid *dgid, 8968d9ec9adSJason Gunthorpe u32 flow_label, u8 hop_limit, u8 traffic_class, 8978d9ec9adSJason Gunthorpe const struct ib_gid_attr *sgid_attr) 8988d9ec9adSJason Gunthorpe { 8998d9ec9adSJason Gunthorpe rdma_ah_set_grh(attr, dgid, flow_label, sgid_attr->index, hop_limit, 9008d9ec9adSJason Gunthorpe traffic_class); 9018d9ec9adSJason Gunthorpe attr->grh.sgid_attr = sgid_attr; 9028d9ec9adSJason Gunthorpe } 9038d9ec9adSJason Gunthorpe EXPORT_SYMBOL(rdma_move_grh_sgid_attr); 9048d9ec9adSJason Gunthorpe 9058d9ec9adSJason Gunthorpe /** 9068d9ec9adSJason Gunthorpe * rdma_destroy_ah_attr - Release reference to SGID attribute of 9078d9ec9adSJason Gunthorpe * ah attribute. 9088d9ec9adSJason Gunthorpe * @ah_attr: Pointer to ah attribute 9098d9ec9adSJason Gunthorpe * 9108d9ec9adSJason Gunthorpe * Release reference to the SGID attribute of the ah attribute if it is 9118d9ec9adSJason Gunthorpe * non NULL. It is safe to call this multiple times, and safe to call it on 9128d9ec9adSJason Gunthorpe * a zero initialized ah_attr. 9138d9ec9adSJason Gunthorpe */ 9148d9ec9adSJason Gunthorpe void rdma_destroy_ah_attr(struct rdma_ah_attr *ah_attr) 9158d9ec9adSJason Gunthorpe { 9168d9ec9adSJason Gunthorpe if (ah_attr->grh.sgid_attr) { 9178d9ec9adSJason Gunthorpe rdma_put_gid_attr(ah_attr->grh.sgid_attr); 9188d9ec9adSJason Gunthorpe ah_attr->grh.sgid_attr = NULL; 9198d9ec9adSJason Gunthorpe } 9208d9ec9adSJason Gunthorpe } 9218d9ec9adSJason Gunthorpe EXPORT_SYMBOL(rdma_destroy_ah_attr); 9228d9ec9adSJason Gunthorpe 92373cdaaeeSIra Weiny struct ib_ah *ib_create_ah_from_wc(struct ib_pd *pd, const struct ib_wc *wc, 9241fb7f897SMark Bloch const struct ib_grh *grh, u32 port_num) 9254e00d694SSean Hefty { 92690898850SDasaratharaman Chandramouli struct rdma_ah_attr ah_attr; 927b7403217SParav Pandit struct ib_ah *ah; 9284e00d694SSean Hefty int ret; 9294e00d694SSean Hefty 930f6bdb142SParav Pandit ret = ib_init_ah_attr_from_wc(pd->device, port_num, wc, grh, &ah_attr); 9314e00d694SSean Hefty if (ret) 9324e00d694SSean Hefty return ERR_PTR(ret); 933513789edSHal Rosenstock 934b090c4e3SGal Pressman ah = rdma_create_ah(pd, &ah_attr, RDMA_CREATE_AH_SLEEPABLE); 935b7403217SParav Pandit 936b7403217SParav Pandit rdma_destroy_ah_attr(&ah_attr); 937b7403217SParav Pandit return ah; 938513789edSHal Rosenstock } 939513789edSHal Rosenstock EXPORT_SYMBOL(ib_create_ah_from_wc); 940513789edSHal Rosenstock 94167b985b6SDasaratharaman Chandramouli int rdma_modify_ah(struct ib_ah *ah, struct rdma_ah_attr *ah_attr) 9421da177e4SLinus Torvalds { 9438d9ec9adSJason Gunthorpe const struct ib_gid_attr *old_sgid_attr; 9448d9ec9adSJason Gunthorpe int ret; 9458d9ec9adSJason Gunthorpe 94644c58487SDasaratharaman Chandramouli if (ah->type != ah_attr->type) 94744c58487SDasaratharaman Chandramouli return -EINVAL; 94844c58487SDasaratharaman Chandramouli 9498d9ec9adSJason Gunthorpe ret = rdma_fill_sgid_attr(ah->device, ah_attr, &old_sgid_attr); 9508d9ec9adSJason Gunthorpe if (ret) 9518d9ec9adSJason Gunthorpe return ret; 9528d9ec9adSJason Gunthorpe 9533023a1e9SKamal Heib ret = ah->device->ops.modify_ah ? 9543023a1e9SKamal Heib ah->device->ops.modify_ah(ah, ah_attr) : 95587915bf8SLeon Romanovsky -EOPNOTSUPP; 9568d9ec9adSJason Gunthorpe 9571a1f460fSJason Gunthorpe ah->sgid_attr = rdma_update_sgid_attr(ah_attr, ah->sgid_attr); 9588d9ec9adSJason Gunthorpe rdma_unfill_sgid_attr(ah_attr, old_sgid_attr); 9598d9ec9adSJason Gunthorpe return ret; 9601da177e4SLinus Torvalds } 96167b985b6SDasaratharaman Chandramouli EXPORT_SYMBOL(rdma_modify_ah); 9621da177e4SLinus Torvalds 963bfbfd661SDasaratharaman Chandramouli int rdma_query_ah(struct ib_ah *ah, struct rdma_ah_attr *ah_attr) 9641da177e4SLinus Torvalds { 9658d9ec9adSJason Gunthorpe ah_attr->grh.sgid_attr = NULL; 9668d9ec9adSJason Gunthorpe 9673023a1e9SKamal Heib return ah->device->ops.query_ah ? 9683023a1e9SKamal Heib ah->device->ops.query_ah(ah, ah_attr) : 96987915bf8SLeon Romanovsky -EOPNOTSUPP; 9701da177e4SLinus Torvalds } 971bfbfd661SDasaratharaman Chandramouli EXPORT_SYMBOL(rdma_query_ah); 9721da177e4SLinus Torvalds 973c4367a26SShamir Rabinovitch int rdma_destroy_ah_user(struct ib_ah *ah, u32 flags, struct ib_udata *udata) 9741da177e4SLinus Torvalds { 9751a1f460fSJason Gunthorpe const struct ib_gid_attr *sgid_attr = ah->sgid_attr; 9761da177e4SLinus Torvalds struct ib_pd *pd; 9779a9ebf8cSLeon Romanovsky int ret; 9781da177e4SLinus Torvalds 9792553ba21SGal Pressman might_sleep_if(flags & RDMA_DESTROY_AH_SLEEPABLE); 9802553ba21SGal Pressman 9811da177e4SLinus Torvalds pd = ah->pd; 982d3456914SLeon Romanovsky 9839a9ebf8cSLeon Romanovsky ret = ah->device->ops.destroy_ah(ah, flags); 9849a9ebf8cSLeon Romanovsky if (ret) 9859a9ebf8cSLeon Romanovsky return ret; 9869a9ebf8cSLeon Romanovsky 9871da177e4SLinus Torvalds atomic_dec(&pd->usecnt); 9881a1f460fSJason Gunthorpe if (sgid_attr) 9891a1f460fSJason Gunthorpe rdma_put_gid_attr(sgid_attr); 9901da177e4SLinus Torvalds 991d3456914SLeon Romanovsky kfree(ah); 9929a9ebf8cSLeon Romanovsky return ret; 9931da177e4SLinus Torvalds } 994c4367a26SShamir Rabinovitch EXPORT_SYMBOL(rdma_destroy_ah_user); 9951da177e4SLinus Torvalds 996d41fcc67SRoland Dreier /* Shared receive queues */ 997d41fcc67SRoland Dreier 998b0810b03SJason Gunthorpe /** 999b0810b03SJason Gunthorpe * ib_create_srq_user - Creates a SRQ associated with the specified protection 1000b0810b03SJason Gunthorpe * domain. 1001b0810b03SJason Gunthorpe * @pd: The protection domain associated with the SRQ. 1002b0810b03SJason Gunthorpe * @srq_init_attr: A list of initial attributes required to create the 1003b0810b03SJason Gunthorpe * SRQ. If SRQ creation succeeds, then the attributes are updated to 1004b0810b03SJason Gunthorpe * the actual capabilities of the created SRQ. 100511708142SColton Lewis * @uobject: uobject pointer if this is not a kernel SRQ 100611708142SColton Lewis * @udata: udata pointer if this is not a kernel SRQ 1007b0810b03SJason Gunthorpe * 1008b0810b03SJason Gunthorpe * srq_attr->max_wr and srq_attr->max_sge are read the determine the 1009b0810b03SJason Gunthorpe * requested size of the SRQ, and set to the actual values allocated 1010b0810b03SJason Gunthorpe * on return. If ib_create_srq() succeeds, then max_wr and max_sge 1011b0810b03SJason Gunthorpe * will always be at least as large as the requested values. 1012b0810b03SJason Gunthorpe */ 1013b0810b03SJason Gunthorpe struct ib_srq *ib_create_srq_user(struct ib_pd *pd, 1014b0810b03SJason Gunthorpe struct ib_srq_init_attr *srq_init_attr, 1015b0810b03SJason Gunthorpe struct ib_usrq_object *uobject, 1016b0810b03SJason Gunthorpe struct ib_udata *udata) 1017d41fcc67SRoland Dreier { 1018d41fcc67SRoland Dreier struct ib_srq *srq; 101968e326deSLeon Romanovsky int ret; 1020d41fcc67SRoland Dreier 102168e326deSLeon Romanovsky srq = rdma_zalloc_drv_obj(pd->device, ib_srq); 102268e326deSLeon Romanovsky if (!srq) 102368e326deSLeon Romanovsky return ERR_PTR(-ENOMEM); 1024d41fcc67SRoland Dreier 1025d41fcc67SRoland Dreier srq->device = pd->device; 1026d41fcc67SRoland Dreier srq->pd = pd; 1027d41fcc67SRoland Dreier srq->event_handler = srq_init_attr->event_handler; 1028d41fcc67SRoland Dreier srq->srq_context = srq_init_attr->srq_context; 102996104edaSSean Hefty srq->srq_type = srq_init_attr->srq_type; 1030b0810b03SJason Gunthorpe srq->uobject = uobject; 103168e326deSLeon Romanovsky 10321a56ff6dSArtemy Kovalyov if (ib_srq_has_cq(srq->srq_type)) { 10331a56ff6dSArtemy Kovalyov srq->ext.cq = srq_init_attr->ext.cq; 10341a56ff6dSArtemy Kovalyov atomic_inc(&srq->ext.cq->usecnt); 10351a56ff6dSArtemy Kovalyov } 1036418d5130SSean Hefty if (srq->srq_type == IB_SRQT_XRC) { 1037418d5130SSean Hefty srq->ext.xrc.xrcd = srq_init_attr->ext.xrc.xrcd; 1038418d5130SSean Hefty atomic_inc(&srq->ext.xrc.xrcd->usecnt); 1039418d5130SSean Hefty } 1040d41fcc67SRoland Dreier atomic_inc(&pd->usecnt); 104168e326deSLeon Romanovsky 104248f8a70eSNeta Ostrovsky rdma_restrack_new(&srq->res, RDMA_RESTRACK_SRQ); 104348f8a70eSNeta Ostrovsky rdma_restrack_parent_name(&srq->res, &pd->res); 104448f8a70eSNeta Ostrovsky 1045b0810b03SJason Gunthorpe ret = pd->device->ops.create_srq(srq, srq_init_attr, udata); 104668e326deSLeon Romanovsky if (ret) { 104748f8a70eSNeta Ostrovsky rdma_restrack_put(&srq->res); 104868e326deSLeon Romanovsky atomic_dec(&srq->pd->usecnt); 104968e326deSLeon Romanovsky if (srq->srq_type == IB_SRQT_XRC) 105068e326deSLeon Romanovsky atomic_dec(&srq->ext.xrc.xrcd->usecnt); 105168e326deSLeon Romanovsky if (ib_srq_has_cq(srq->srq_type)) 105268e326deSLeon Romanovsky atomic_dec(&srq->ext.cq->usecnt); 105368e326deSLeon Romanovsky kfree(srq); 105468e326deSLeon Romanovsky return ERR_PTR(ret); 1055d41fcc67SRoland Dreier } 1056d41fcc67SRoland Dreier 105748f8a70eSNeta Ostrovsky rdma_restrack_add(&srq->res); 105848f8a70eSNeta Ostrovsky 1059d41fcc67SRoland Dreier return srq; 1060d41fcc67SRoland Dreier } 1061b0810b03SJason Gunthorpe EXPORT_SYMBOL(ib_create_srq_user); 1062d41fcc67SRoland Dreier 1063d41fcc67SRoland Dreier int ib_modify_srq(struct ib_srq *srq, 1064d41fcc67SRoland Dreier struct ib_srq_attr *srq_attr, 1065d41fcc67SRoland Dreier enum ib_srq_attr_mask srq_attr_mask) 1066d41fcc67SRoland Dreier { 10673023a1e9SKamal Heib return srq->device->ops.modify_srq ? 10683023a1e9SKamal Heib srq->device->ops.modify_srq(srq, srq_attr, srq_attr_mask, 10693023a1e9SKamal Heib NULL) : -EOPNOTSUPP; 1070d41fcc67SRoland Dreier } 1071d41fcc67SRoland Dreier EXPORT_SYMBOL(ib_modify_srq); 1072d41fcc67SRoland Dreier 1073d41fcc67SRoland Dreier int ib_query_srq(struct ib_srq *srq, 1074d41fcc67SRoland Dreier struct ib_srq_attr *srq_attr) 1075d41fcc67SRoland Dreier { 10763023a1e9SKamal Heib return srq->device->ops.query_srq ? 10773023a1e9SKamal Heib srq->device->ops.query_srq(srq, srq_attr) : -EOPNOTSUPP; 1078d41fcc67SRoland Dreier } 1079d41fcc67SRoland Dreier EXPORT_SYMBOL(ib_query_srq); 1080d41fcc67SRoland Dreier 1081c4367a26SShamir Rabinovitch int ib_destroy_srq_user(struct ib_srq *srq, struct ib_udata *udata) 1082d41fcc67SRoland Dreier { 1083119181d1SLeon Romanovsky int ret; 1084119181d1SLeon Romanovsky 1085d41fcc67SRoland Dreier if (atomic_read(&srq->usecnt)) 1086d41fcc67SRoland Dreier return -EBUSY; 1087d41fcc67SRoland Dreier 1088119181d1SLeon Romanovsky ret = srq->device->ops.destroy_srq(srq, udata); 1089119181d1SLeon Romanovsky if (ret) 1090119181d1SLeon Romanovsky return ret; 1091d41fcc67SRoland Dreier 109268e326deSLeon Romanovsky atomic_dec(&srq->pd->usecnt); 109368e326deSLeon Romanovsky if (srq->srq_type == IB_SRQT_XRC) 109468e326deSLeon Romanovsky atomic_dec(&srq->ext.xrc.xrcd->usecnt); 109568e326deSLeon Romanovsky if (ib_srq_has_cq(srq->srq_type)) 109668e326deSLeon Romanovsky atomic_dec(&srq->ext.cq->usecnt); 109748f8a70eSNeta Ostrovsky rdma_restrack_del(&srq->res); 109868e326deSLeon Romanovsky kfree(srq); 1099d41fcc67SRoland Dreier 1100119181d1SLeon Romanovsky return ret; 1101d41fcc67SRoland Dreier } 1102c4367a26SShamir Rabinovitch EXPORT_SYMBOL(ib_destroy_srq_user); 1103d41fcc67SRoland Dreier 11041da177e4SLinus Torvalds /* Queue pairs */ 11051da177e4SLinus Torvalds 11060e0ec7e0SSean Hefty static void __ib_shared_qp_event_handler(struct ib_event *event, void *context) 11070e0ec7e0SSean Hefty { 11080e0ec7e0SSean Hefty struct ib_qp *qp = context; 110973c40c61SYishai Hadas unsigned long flags; 11100e0ec7e0SSean Hefty 111140adf686SParav Pandit spin_lock_irqsave(&qp->device->qp_open_list_lock, flags); 11120e0ec7e0SSean Hefty list_for_each_entry(event->element.qp, &qp->open_list, open_list) 1113eec9e29fSShlomo Pongratz if (event->element.qp->event_handler) 11140e0ec7e0SSean Hefty event->element.qp->event_handler(event, event->element.qp->qp_context); 111540adf686SParav Pandit spin_unlock_irqrestore(&qp->device->qp_open_list_lock, flags); 11160e0ec7e0SSean Hefty } 11170e0ec7e0SSean Hefty 11180e0ec7e0SSean Hefty static struct ib_qp *__ib_open_qp(struct ib_qp *real_qp, 11190e0ec7e0SSean Hefty void (*event_handler)(struct ib_event *, void *), 11200e0ec7e0SSean Hefty void *qp_context) 1121d3d72d90SSean Hefty { 11220e0ec7e0SSean Hefty struct ib_qp *qp; 11230e0ec7e0SSean Hefty unsigned long flags; 1124d291f1a6SDaniel Jurgens int err; 11250e0ec7e0SSean Hefty 11260e0ec7e0SSean Hefty qp = kzalloc(sizeof *qp, GFP_KERNEL); 11270e0ec7e0SSean Hefty if (!qp) 11280e0ec7e0SSean Hefty return ERR_PTR(-ENOMEM); 11290e0ec7e0SSean Hefty 11300e0ec7e0SSean Hefty qp->real_qp = real_qp; 1131d291f1a6SDaniel Jurgens err = ib_open_shared_qp_security(qp, real_qp->device); 1132d291f1a6SDaniel Jurgens if (err) { 1133d291f1a6SDaniel Jurgens kfree(qp); 1134d291f1a6SDaniel Jurgens return ERR_PTR(err); 1135d291f1a6SDaniel Jurgens } 1136d291f1a6SDaniel Jurgens 1137d291f1a6SDaniel Jurgens qp->real_qp = real_qp; 11380e0ec7e0SSean Hefty atomic_inc(&real_qp->usecnt); 11390e0ec7e0SSean Hefty qp->device = real_qp->device; 11400e0ec7e0SSean Hefty qp->event_handler = event_handler; 11410e0ec7e0SSean Hefty qp->qp_context = qp_context; 11420e0ec7e0SSean Hefty qp->qp_num = real_qp->qp_num; 11430e0ec7e0SSean Hefty qp->qp_type = real_qp->qp_type; 11440e0ec7e0SSean Hefty 114540adf686SParav Pandit spin_lock_irqsave(&real_qp->device->qp_open_list_lock, flags); 11460e0ec7e0SSean Hefty list_add(&qp->open_list, &real_qp->open_list); 114740adf686SParav Pandit spin_unlock_irqrestore(&real_qp->device->qp_open_list_lock, flags); 11480e0ec7e0SSean Hefty 11490e0ec7e0SSean Hefty return qp; 1150d3d72d90SSean Hefty } 1151d3d72d90SSean Hefty 11520e0ec7e0SSean Hefty struct ib_qp *ib_open_qp(struct ib_xrcd *xrcd, 11530e0ec7e0SSean Hefty struct ib_qp_open_attr *qp_open_attr) 11540e0ec7e0SSean Hefty { 11550e0ec7e0SSean Hefty struct ib_qp *qp, *real_qp; 11560e0ec7e0SSean Hefty 11570e0ec7e0SSean Hefty if (qp_open_attr->qp_type != IB_QPT_XRC_TGT) 11580e0ec7e0SSean Hefty return ERR_PTR(-EINVAL); 11590e0ec7e0SSean Hefty 11606f3ca6f4SMaor Gottlieb down_read(&xrcd->tgt_qps_rwsem); 11616f3ca6f4SMaor Gottlieb real_qp = xa_load(&xrcd->tgt_qps, qp_open_attr->qp_num); 11626f3ca6f4SMaor Gottlieb if (!real_qp) { 11636f3ca6f4SMaor Gottlieb up_read(&xrcd->tgt_qps_rwsem); 11646f3ca6f4SMaor Gottlieb return ERR_PTR(-EINVAL); 11656f3ca6f4SMaor Gottlieb } 11660e0ec7e0SSean Hefty qp = __ib_open_qp(real_qp, qp_open_attr->event_handler, 11670e0ec7e0SSean Hefty qp_open_attr->qp_context); 11686f3ca6f4SMaor Gottlieb up_read(&xrcd->tgt_qps_rwsem); 11690e0ec7e0SSean Hefty return qp; 11700e0ec7e0SSean Hefty } 11710e0ec7e0SSean Hefty EXPORT_SYMBOL(ib_open_qp); 11720e0ec7e0SSean Hefty 1173c4367a26SShamir Rabinovitch static struct ib_qp *create_xrc_qp_user(struct ib_qp *qp, 1174b72bfc96SJason Gunthorpe struct ib_qp_init_attr *qp_init_attr) 11751da177e4SLinus Torvalds { 117604c41bf3SChristoph Hellwig struct ib_qp *real_qp = qp; 11776f3ca6f4SMaor Gottlieb int err; 11781da177e4SLinus Torvalds 11790e0ec7e0SSean Hefty qp->event_handler = __ib_shared_qp_event_handler; 11800e0ec7e0SSean Hefty qp->qp_context = qp; 1181b42b63cfSSean Hefty qp->pd = NULL; 1182b42b63cfSSean Hefty qp->send_cq = qp->recv_cq = NULL; 1183b42b63cfSSean Hefty qp->srq = NULL; 1184b42b63cfSSean Hefty qp->xrcd = qp_init_attr->xrcd; 1185b42b63cfSSean Hefty atomic_inc(&qp_init_attr->xrcd->usecnt); 11860e0ec7e0SSean Hefty INIT_LIST_HEAD(&qp->open_list); 11870e0ec7e0SSean Hefty 11880e0ec7e0SSean Hefty qp = __ib_open_qp(real_qp, qp_init_attr->event_handler, 11890e0ec7e0SSean Hefty qp_init_attr->qp_context); 1190535005caSYuval Avnery if (IS_ERR(qp)) 1191535005caSYuval Avnery return qp; 1192535005caSYuval Avnery 11936f3ca6f4SMaor Gottlieb err = xa_err(xa_store(&qp_init_attr->xrcd->tgt_qps, real_qp->qp_num, 11946f3ca6f4SMaor Gottlieb real_qp, GFP_KERNEL)); 11956f3ca6f4SMaor Gottlieb if (err) { 11966f3ca6f4SMaor Gottlieb ib_close_qp(qp); 11976f3ca6f4SMaor Gottlieb return ERR_PTR(err); 11986f3ca6f4SMaor Gottlieb } 119904c41bf3SChristoph Hellwig return qp; 120004c41bf3SChristoph Hellwig } 120104c41bf3SChristoph Hellwig 1202b72bfc96SJason Gunthorpe /** 120366f57b87SLeon Romanovsky * ib_create_named_qp - Creates a kernel QP associated with the specified protection 1204b72bfc96SJason Gunthorpe * domain. 1205b72bfc96SJason Gunthorpe * @pd: The protection domain associated with the QP. 1206b72bfc96SJason Gunthorpe * @qp_init_attr: A list of initial attributes required to create the 1207b72bfc96SJason Gunthorpe * QP. If QP creation succeeds, then the attributes are updated to 1208b72bfc96SJason Gunthorpe * the actual capabilities of the created QP. 1209d1dec0caSLukas Bulwahn * @caller: caller's build-time module name 1210b72bfc96SJason Gunthorpe * 1211b72bfc96SJason Gunthorpe * NOTE: for user qp use ib_create_qp_user with valid udata! 1212b72bfc96SJason Gunthorpe */ 121366f57b87SLeon Romanovsky struct ib_qp *ib_create_named_qp(struct ib_pd *pd, 121466f57b87SLeon Romanovsky struct ib_qp_init_attr *qp_init_attr, 121566f57b87SLeon Romanovsky const char *caller) 121604c41bf3SChristoph Hellwig { 121704c41bf3SChristoph Hellwig struct ib_device *device = pd ? pd->device : qp_init_attr->xrcd->device; 121804c41bf3SChristoph Hellwig struct ib_qp *qp; 1219a060b562SChristoph Hellwig int ret; 1220a060b562SChristoph Hellwig 1221a9017e23SYishai Hadas if (qp_init_attr->rwq_ind_tbl && 1222a9017e23SYishai Hadas (qp_init_attr->recv_cq || 1223a9017e23SYishai Hadas qp_init_attr->srq || qp_init_attr->cap.max_recv_wr || 1224a9017e23SYishai Hadas qp_init_attr->cap.max_recv_sge)) 1225a9017e23SYishai Hadas return ERR_PTR(-EINVAL); 1226a9017e23SYishai Hadas 1227185eddc4SMax Gurtovoy if ((qp_init_attr->create_flags & IB_QP_CREATE_INTEGRITY_EN) && 1228185eddc4SMax Gurtovoy !(device->attrs.device_cap_flags & IB_DEVICE_INTEGRITY_HANDOVER)) 1229185eddc4SMax Gurtovoy return ERR_PTR(-EINVAL); 1230185eddc4SMax Gurtovoy 1231a060b562SChristoph Hellwig /* 1232a060b562SChristoph Hellwig * If the callers is using the RDMA API calculate the resources 1233a060b562SChristoph Hellwig * needed for the RDMA READ/WRITE operations. 1234a060b562SChristoph Hellwig * 1235a060b562SChristoph Hellwig * Note that these callers need to pass in a port number. 1236a060b562SChristoph Hellwig */ 1237a060b562SChristoph Hellwig if (qp_init_attr->cap.max_rdma_ctxs) 1238a060b562SChristoph Hellwig rdma_rw_init_qp(device, qp_init_attr); 123904c41bf3SChristoph Hellwig 124066f57b87SLeon Romanovsky qp = _ib_create_qp(device, pd, qp_init_attr, NULL, NULL, caller); 124104c41bf3SChristoph Hellwig if (IS_ERR(qp)) 124204c41bf3SChristoph Hellwig return qp; 124304c41bf3SChristoph Hellwig 1244d291f1a6SDaniel Jurgens ret = ib_create_qp_security(qp, device); 1245535005caSYuval Avnery if (ret) 1246535005caSYuval Avnery goto err; 1247d291f1a6SDaniel Jurgens 1248535005caSYuval Avnery if (qp_init_attr->qp_type == IB_QPT_XRC_TGT) { 1249c4367a26SShamir Rabinovitch struct ib_qp *xrc_qp = 1250b72bfc96SJason Gunthorpe create_xrc_qp_user(qp, qp_init_attr); 1251535005caSYuval Avnery 1252535005caSYuval Avnery if (IS_ERR(xrc_qp)) { 1253535005caSYuval Avnery ret = PTR_ERR(xrc_qp); 1254535005caSYuval Avnery goto err; 1255535005caSYuval Avnery } 1256535005caSYuval Avnery return xrc_qp; 1257535005caSYuval Avnery } 125804c41bf3SChristoph Hellwig 12591da177e4SLinus Torvalds qp->event_handler = qp_init_attr->event_handler; 12601da177e4SLinus Torvalds qp->qp_context = qp_init_attr->qp_context; 1261b42b63cfSSean Hefty if (qp_init_attr->qp_type == IB_QPT_XRC_INI) { 1262b42b63cfSSean Hefty qp->recv_cq = NULL; 1263b42b63cfSSean Hefty qp->srq = NULL; 1264b42b63cfSSean Hefty } else { 1265b42b63cfSSean Hefty qp->recv_cq = qp_init_attr->recv_cq; 1266a9017e23SYishai Hadas if (qp_init_attr->recv_cq) 1267b42b63cfSSean Hefty atomic_inc(&qp_init_attr->recv_cq->usecnt); 1268b42b63cfSSean Hefty qp->srq = qp_init_attr->srq; 1269b42b63cfSSean Hefty if (qp->srq) 1270b42b63cfSSean Hefty atomic_inc(&qp_init_attr->srq->usecnt); 1271b42b63cfSSean Hefty } 1272b42b63cfSSean Hefty 12731da177e4SLinus Torvalds qp->send_cq = qp_init_attr->send_cq; 1274b42b63cfSSean Hefty qp->xrcd = NULL; 1275b42b63cfSSean Hefty 12761da177e4SLinus Torvalds atomic_inc(&pd->usecnt); 1277a9017e23SYishai Hadas if (qp_init_attr->send_cq) 12781da177e4SLinus Torvalds atomic_inc(&qp_init_attr->send_cq->usecnt); 1279a9017e23SYishai Hadas if (qp_init_attr->rwq_ind_tbl) 1280a9017e23SYishai Hadas atomic_inc(&qp->rwq_ind_tbl->usecnt); 1281a060b562SChristoph Hellwig 1282a060b562SChristoph Hellwig if (qp_init_attr->cap.max_rdma_ctxs) { 1283a060b562SChristoph Hellwig ret = rdma_rw_init_mrs(qp, qp_init_attr); 1284535005caSYuval Avnery if (ret) 1285535005caSYuval Avnery goto err; 1286a060b562SChristoph Hellwig } 1287a060b562SChristoph Hellwig 1288632bc3f6SBart Van Assche /* 1289632bc3f6SBart Van Assche * Note: all hw drivers guarantee that max_send_sge is lower than 1290632bc3f6SBart Van Assche * the device RDMA WRITE SGE limit but not all hw drivers ensure that 1291632bc3f6SBart Van Assche * max_send_sge <= max_sge_rd. 1292632bc3f6SBart Van Assche */ 1293632bc3f6SBart Van Assche qp->max_write_sge = qp_init_attr->cap.max_send_sge; 1294632bc3f6SBart Van Assche qp->max_read_sge = min_t(u32, qp_init_attr->cap.max_send_sge, 1295632bc3f6SBart Van Assche device->attrs.max_sge_rd); 1296185eddc4SMax Gurtovoy if (qp_init_attr->create_flags & IB_QP_CREATE_INTEGRITY_EN) 1297185eddc4SMax Gurtovoy qp->integrity_en = true; 1298632bc3f6SBart Van Assche 12991da177e4SLinus Torvalds return qp; 1300535005caSYuval Avnery 1301535005caSYuval Avnery err: 1302535005caSYuval Avnery ib_destroy_qp(qp); 1303535005caSYuval Avnery return ERR_PTR(ret); 1304535005caSYuval Avnery 13051da177e4SLinus Torvalds } 130666f57b87SLeon Romanovsky EXPORT_SYMBOL(ib_create_named_qp); 13071da177e4SLinus Torvalds 13088a51866fSRoland Dreier static const struct { 13098a51866fSRoland Dreier int valid; 1310b42b63cfSSean Hefty enum ib_qp_attr_mask req_param[IB_QPT_MAX]; 1311b42b63cfSSean Hefty enum ib_qp_attr_mask opt_param[IB_QPT_MAX]; 13128a51866fSRoland Dreier } qp_state_table[IB_QPS_ERR + 1][IB_QPS_ERR + 1] = { 13138a51866fSRoland Dreier [IB_QPS_RESET] = { 13148a51866fSRoland Dreier [IB_QPS_RESET] = { .valid = 1 }, 13158a51866fSRoland Dreier [IB_QPS_INIT] = { 13168a51866fSRoland Dreier .valid = 1, 13178a51866fSRoland Dreier .req_param = { 13188a51866fSRoland Dreier [IB_QPT_UD] = (IB_QP_PKEY_INDEX | 13198a51866fSRoland Dreier IB_QP_PORT | 13208a51866fSRoland Dreier IB_QP_QKEY), 1321c938a616SOr Gerlitz [IB_QPT_RAW_PACKET] = IB_QP_PORT, 13228a51866fSRoland Dreier [IB_QPT_UC] = (IB_QP_PKEY_INDEX | 13238a51866fSRoland Dreier IB_QP_PORT | 13248a51866fSRoland Dreier IB_QP_ACCESS_FLAGS), 13258a51866fSRoland Dreier [IB_QPT_RC] = (IB_QP_PKEY_INDEX | 13268a51866fSRoland Dreier IB_QP_PORT | 13278a51866fSRoland Dreier IB_QP_ACCESS_FLAGS), 1328b42b63cfSSean Hefty [IB_QPT_XRC_INI] = (IB_QP_PKEY_INDEX | 1329b42b63cfSSean Hefty IB_QP_PORT | 1330b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS), 1331b42b63cfSSean Hefty [IB_QPT_XRC_TGT] = (IB_QP_PKEY_INDEX | 1332b42b63cfSSean Hefty IB_QP_PORT | 1333b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS), 13348a51866fSRoland Dreier [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | 13358a51866fSRoland Dreier IB_QP_QKEY), 13368a51866fSRoland Dreier [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | 13378a51866fSRoland Dreier IB_QP_QKEY), 13388a51866fSRoland Dreier } 13398a51866fSRoland Dreier }, 13408a51866fSRoland Dreier }, 13418a51866fSRoland Dreier [IB_QPS_INIT] = { 13428a51866fSRoland Dreier [IB_QPS_RESET] = { .valid = 1 }, 13438a51866fSRoland Dreier [IB_QPS_ERR] = { .valid = 1 }, 13448a51866fSRoland Dreier [IB_QPS_INIT] = { 13458a51866fSRoland Dreier .valid = 1, 13468a51866fSRoland Dreier .opt_param = { 13478a51866fSRoland Dreier [IB_QPT_UD] = (IB_QP_PKEY_INDEX | 13488a51866fSRoland Dreier IB_QP_PORT | 13498a51866fSRoland Dreier IB_QP_QKEY), 13508a51866fSRoland Dreier [IB_QPT_UC] = (IB_QP_PKEY_INDEX | 13518a51866fSRoland Dreier IB_QP_PORT | 13528a51866fSRoland Dreier IB_QP_ACCESS_FLAGS), 13538a51866fSRoland Dreier [IB_QPT_RC] = (IB_QP_PKEY_INDEX | 13548a51866fSRoland Dreier IB_QP_PORT | 13558a51866fSRoland Dreier IB_QP_ACCESS_FLAGS), 1356b42b63cfSSean Hefty [IB_QPT_XRC_INI] = (IB_QP_PKEY_INDEX | 1357b42b63cfSSean Hefty IB_QP_PORT | 1358b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS), 1359b42b63cfSSean Hefty [IB_QPT_XRC_TGT] = (IB_QP_PKEY_INDEX | 1360b42b63cfSSean Hefty IB_QP_PORT | 1361b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS), 13628a51866fSRoland Dreier [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | 13638a51866fSRoland Dreier IB_QP_QKEY), 13648a51866fSRoland Dreier [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | 13658a51866fSRoland Dreier IB_QP_QKEY), 13668a51866fSRoland Dreier } 13678a51866fSRoland Dreier }, 13688a51866fSRoland Dreier [IB_QPS_RTR] = { 13698a51866fSRoland Dreier .valid = 1, 13708a51866fSRoland Dreier .req_param = { 13718a51866fSRoland Dreier [IB_QPT_UC] = (IB_QP_AV | 13728a51866fSRoland Dreier IB_QP_PATH_MTU | 13738a51866fSRoland Dreier IB_QP_DEST_QPN | 13748a51866fSRoland Dreier IB_QP_RQ_PSN), 13758a51866fSRoland Dreier [IB_QPT_RC] = (IB_QP_AV | 13768a51866fSRoland Dreier IB_QP_PATH_MTU | 13778a51866fSRoland Dreier IB_QP_DEST_QPN | 13788a51866fSRoland Dreier IB_QP_RQ_PSN | 13798a51866fSRoland Dreier IB_QP_MAX_DEST_RD_ATOMIC | 13808a51866fSRoland Dreier IB_QP_MIN_RNR_TIMER), 1381b42b63cfSSean Hefty [IB_QPT_XRC_INI] = (IB_QP_AV | 1382b42b63cfSSean Hefty IB_QP_PATH_MTU | 1383b42b63cfSSean Hefty IB_QP_DEST_QPN | 1384b42b63cfSSean Hefty IB_QP_RQ_PSN), 1385b42b63cfSSean Hefty [IB_QPT_XRC_TGT] = (IB_QP_AV | 1386b42b63cfSSean Hefty IB_QP_PATH_MTU | 1387b42b63cfSSean Hefty IB_QP_DEST_QPN | 1388b42b63cfSSean Hefty IB_QP_RQ_PSN | 1389b42b63cfSSean Hefty IB_QP_MAX_DEST_RD_ATOMIC | 1390b42b63cfSSean Hefty IB_QP_MIN_RNR_TIMER), 13918a51866fSRoland Dreier }, 13928a51866fSRoland Dreier .opt_param = { 13938a51866fSRoland Dreier [IB_QPT_UD] = (IB_QP_PKEY_INDEX | 13948a51866fSRoland Dreier IB_QP_QKEY), 13958a51866fSRoland Dreier [IB_QPT_UC] = (IB_QP_ALT_PATH | 13968a51866fSRoland Dreier IB_QP_ACCESS_FLAGS | 13978a51866fSRoland Dreier IB_QP_PKEY_INDEX), 13988a51866fSRoland Dreier [IB_QPT_RC] = (IB_QP_ALT_PATH | 13998a51866fSRoland Dreier IB_QP_ACCESS_FLAGS | 14008a51866fSRoland Dreier IB_QP_PKEY_INDEX), 1401b42b63cfSSean Hefty [IB_QPT_XRC_INI] = (IB_QP_ALT_PATH | 1402b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS | 1403b42b63cfSSean Hefty IB_QP_PKEY_INDEX), 1404b42b63cfSSean Hefty [IB_QPT_XRC_TGT] = (IB_QP_ALT_PATH | 1405b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS | 1406b42b63cfSSean Hefty IB_QP_PKEY_INDEX), 14078a51866fSRoland Dreier [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | 14088a51866fSRoland Dreier IB_QP_QKEY), 14098a51866fSRoland Dreier [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | 14108a51866fSRoland Dreier IB_QP_QKEY), 1411dd5f03beSMatan Barak }, 1412dbf727deSMatan Barak }, 14138a51866fSRoland Dreier }, 14148a51866fSRoland Dreier [IB_QPS_RTR] = { 14158a51866fSRoland Dreier [IB_QPS_RESET] = { .valid = 1 }, 14168a51866fSRoland Dreier [IB_QPS_ERR] = { .valid = 1 }, 14178a51866fSRoland Dreier [IB_QPS_RTS] = { 14188a51866fSRoland Dreier .valid = 1, 14198a51866fSRoland Dreier .req_param = { 14208a51866fSRoland Dreier [IB_QPT_UD] = IB_QP_SQ_PSN, 14218a51866fSRoland Dreier [IB_QPT_UC] = IB_QP_SQ_PSN, 14228a51866fSRoland Dreier [IB_QPT_RC] = (IB_QP_TIMEOUT | 14238a51866fSRoland Dreier IB_QP_RETRY_CNT | 14248a51866fSRoland Dreier IB_QP_RNR_RETRY | 14258a51866fSRoland Dreier IB_QP_SQ_PSN | 14268a51866fSRoland Dreier IB_QP_MAX_QP_RD_ATOMIC), 1427b42b63cfSSean Hefty [IB_QPT_XRC_INI] = (IB_QP_TIMEOUT | 1428b42b63cfSSean Hefty IB_QP_RETRY_CNT | 1429b42b63cfSSean Hefty IB_QP_RNR_RETRY | 1430b42b63cfSSean Hefty IB_QP_SQ_PSN | 1431b42b63cfSSean Hefty IB_QP_MAX_QP_RD_ATOMIC), 1432b42b63cfSSean Hefty [IB_QPT_XRC_TGT] = (IB_QP_TIMEOUT | 1433b42b63cfSSean Hefty IB_QP_SQ_PSN), 14348a51866fSRoland Dreier [IB_QPT_SMI] = IB_QP_SQ_PSN, 14358a51866fSRoland Dreier [IB_QPT_GSI] = IB_QP_SQ_PSN, 14368a51866fSRoland Dreier }, 14378a51866fSRoland Dreier .opt_param = { 14388a51866fSRoland Dreier [IB_QPT_UD] = (IB_QP_CUR_STATE | 14398a51866fSRoland Dreier IB_QP_QKEY), 14408a51866fSRoland Dreier [IB_QPT_UC] = (IB_QP_CUR_STATE | 14418a51866fSRoland Dreier IB_QP_ALT_PATH | 14428a51866fSRoland Dreier IB_QP_ACCESS_FLAGS | 14438a51866fSRoland Dreier IB_QP_PATH_MIG_STATE), 14448a51866fSRoland Dreier [IB_QPT_RC] = (IB_QP_CUR_STATE | 14458a51866fSRoland Dreier IB_QP_ALT_PATH | 14468a51866fSRoland Dreier IB_QP_ACCESS_FLAGS | 14478a51866fSRoland Dreier IB_QP_MIN_RNR_TIMER | 14488a51866fSRoland Dreier IB_QP_PATH_MIG_STATE), 1449b42b63cfSSean Hefty [IB_QPT_XRC_INI] = (IB_QP_CUR_STATE | 1450b42b63cfSSean Hefty IB_QP_ALT_PATH | 1451b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS | 1452b42b63cfSSean Hefty IB_QP_PATH_MIG_STATE), 1453b42b63cfSSean Hefty [IB_QPT_XRC_TGT] = (IB_QP_CUR_STATE | 1454b42b63cfSSean Hefty IB_QP_ALT_PATH | 1455b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS | 1456b42b63cfSSean Hefty IB_QP_MIN_RNR_TIMER | 1457b42b63cfSSean Hefty IB_QP_PATH_MIG_STATE), 14588a51866fSRoland Dreier [IB_QPT_SMI] = (IB_QP_CUR_STATE | 14598a51866fSRoland Dreier IB_QP_QKEY), 14608a51866fSRoland Dreier [IB_QPT_GSI] = (IB_QP_CUR_STATE | 14618a51866fSRoland Dreier IB_QP_QKEY), 1462528e5a1bSBodong Wang [IB_QPT_RAW_PACKET] = IB_QP_RATE_LIMIT, 14638a51866fSRoland Dreier } 14648a51866fSRoland Dreier } 14658a51866fSRoland Dreier }, 14668a51866fSRoland Dreier [IB_QPS_RTS] = { 14678a51866fSRoland Dreier [IB_QPS_RESET] = { .valid = 1 }, 14688a51866fSRoland Dreier [IB_QPS_ERR] = { .valid = 1 }, 14698a51866fSRoland Dreier [IB_QPS_RTS] = { 14708a51866fSRoland Dreier .valid = 1, 14718a51866fSRoland Dreier .opt_param = { 14728a51866fSRoland Dreier [IB_QPT_UD] = (IB_QP_CUR_STATE | 14738a51866fSRoland Dreier IB_QP_QKEY), 14744546d31dSDotan Barak [IB_QPT_UC] = (IB_QP_CUR_STATE | 14754546d31dSDotan Barak IB_QP_ACCESS_FLAGS | 14768a51866fSRoland Dreier IB_QP_ALT_PATH | 14778a51866fSRoland Dreier IB_QP_PATH_MIG_STATE), 14784546d31dSDotan Barak [IB_QPT_RC] = (IB_QP_CUR_STATE | 14794546d31dSDotan Barak IB_QP_ACCESS_FLAGS | 14808a51866fSRoland Dreier IB_QP_ALT_PATH | 14818a51866fSRoland Dreier IB_QP_PATH_MIG_STATE | 14828a51866fSRoland Dreier IB_QP_MIN_RNR_TIMER), 1483b42b63cfSSean Hefty [IB_QPT_XRC_INI] = (IB_QP_CUR_STATE | 1484b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS | 1485b42b63cfSSean Hefty IB_QP_ALT_PATH | 1486b42b63cfSSean Hefty IB_QP_PATH_MIG_STATE), 1487b42b63cfSSean Hefty [IB_QPT_XRC_TGT] = (IB_QP_CUR_STATE | 1488b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS | 1489b42b63cfSSean Hefty IB_QP_ALT_PATH | 1490b42b63cfSSean Hefty IB_QP_PATH_MIG_STATE | 1491b42b63cfSSean Hefty IB_QP_MIN_RNR_TIMER), 14928a51866fSRoland Dreier [IB_QPT_SMI] = (IB_QP_CUR_STATE | 14938a51866fSRoland Dreier IB_QP_QKEY), 14948a51866fSRoland Dreier [IB_QPT_GSI] = (IB_QP_CUR_STATE | 14958a51866fSRoland Dreier IB_QP_QKEY), 1496528e5a1bSBodong Wang [IB_QPT_RAW_PACKET] = IB_QP_RATE_LIMIT, 14978a51866fSRoland Dreier } 14988a51866fSRoland Dreier }, 14998a51866fSRoland Dreier [IB_QPS_SQD] = { 15008a51866fSRoland Dreier .valid = 1, 15018a51866fSRoland Dreier .opt_param = { 15028a51866fSRoland Dreier [IB_QPT_UD] = IB_QP_EN_SQD_ASYNC_NOTIFY, 15038a51866fSRoland Dreier [IB_QPT_UC] = IB_QP_EN_SQD_ASYNC_NOTIFY, 15048a51866fSRoland Dreier [IB_QPT_RC] = IB_QP_EN_SQD_ASYNC_NOTIFY, 1505b42b63cfSSean Hefty [IB_QPT_XRC_INI] = IB_QP_EN_SQD_ASYNC_NOTIFY, 1506b42b63cfSSean Hefty [IB_QPT_XRC_TGT] = IB_QP_EN_SQD_ASYNC_NOTIFY, /* ??? */ 15078a51866fSRoland Dreier [IB_QPT_SMI] = IB_QP_EN_SQD_ASYNC_NOTIFY, 15088a51866fSRoland Dreier [IB_QPT_GSI] = IB_QP_EN_SQD_ASYNC_NOTIFY 15098a51866fSRoland Dreier } 15108a51866fSRoland Dreier }, 15118a51866fSRoland Dreier }, 15128a51866fSRoland Dreier [IB_QPS_SQD] = { 15138a51866fSRoland Dreier [IB_QPS_RESET] = { .valid = 1 }, 15148a51866fSRoland Dreier [IB_QPS_ERR] = { .valid = 1 }, 15158a51866fSRoland Dreier [IB_QPS_RTS] = { 15168a51866fSRoland Dreier .valid = 1, 15178a51866fSRoland Dreier .opt_param = { 15188a51866fSRoland Dreier [IB_QPT_UD] = (IB_QP_CUR_STATE | 15198a51866fSRoland Dreier IB_QP_QKEY), 15208a51866fSRoland Dreier [IB_QPT_UC] = (IB_QP_CUR_STATE | 15218a51866fSRoland Dreier IB_QP_ALT_PATH | 15228a51866fSRoland Dreier IB_QP_ACCESS_FLAGS | 15238a51866fSRoland Dreier IB_QP_PATH_MIG_STATE), 15248a51866fSRoland Dreier [IB_QPT_RC] = (IB_QP_CUR_STATE | 15258a51866fSRoland Dreier IB_QP_ALT_PATH | 15268a51866fSRoland Dreier IB_QP_ACCESS_FLAGS | 15278a51866fSRoland Dreier IB_QP_MIN_RNR_TIMER | 15288a51866fSRoland Dreier IB_QP_PATH_MIG_STATE), 1529b42b63cfSSean Hefty [IB_QPT_XRC_INI] = (IB_QP_CUR_STATE | 1530b42b63cfSSean Hefty IB_QP_ALT_PATH | 1531b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS | 1532b42b63cfSSean Hefty IB_QP_PATH_MIG_STATE), 1533b42b63cfSSean Hefty [IB_QPT_XRC_TGT] = (IB_QP_CUR_STATE | 1534b42b63cfSSean Hefty IB_QP_ALT_PATH | 1535b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS | 1536b42b63cfSSean Hefty IB_QP_MIN_RNR_TIMER | 1537b42b63cfSSean Hefty IB_QP_PATH_MIG_STATE), 15388a51866fSRoland Dreier [IB_QPT_SMI] = (IB_QP_CUR_STATE | 15398a51866fSRoland Dreier IB_QP_QKEY), 15408a51866fSRoland Dreier [IB_QPT_GSI] = (IB_QP_CUR_STATE | 15418a51866fSRoland Dreier IB_QP_QKEY), 15428a51866fSRoland Dreier } 15438a51866fSRoland Dreier }, 15448a51866fSRoland Dreier [IB_QPS_SQD] = { 15458a51866fSRoland Dreier .valid = 1, 15468a51866fSRoland Dreier .opt_param = { 15478a51866fSRoland Dreier [IB_QPT_UD] = (IB_QP_PKEY_INDEX | 15488a51866fSRoland Dreier IB_QP_QKEY), 15498a51866fSRoland Dreier [IB_QPT_UC] = (IB_QP_AV | 15508a51866fSRoland Dreier IB_QP_ALT_PATH | 15518a51866fSRoland Dreier IB_QP_ACCESS_FLAGS | 15528a51866fSRoland Dreier IB_QP_PKEY_INDEX | 15538a51866fSRoland Dreier IB_QP_PATH_MIG_STATE), 15548a51866fSRoland Dreier [IB_QPT_RC] = (IB_QP_PORT | 15558a51866fSRoland Dreier IB_QP_AV | 15568a51866fSRoland Dreier IB_QP_TIMEOUT | 15578a51866fSRoland Dreier IB_QP_RETRY_CNT | 15588a51866fSRoland Dreier IB_QP_RNR_RETRY | 15598a51866fSRoland Dreier IB_QP_MAX_QP_RD_ATOMIC | 15608a51866fSRoland Dreier IB_QP_MAX_DEST_RD_ATOMIC | 15618a51866fSRoland Dreier IB_QP_ALT_PATH | 15628a51866fSRoland Dreier IB_QP_ACCESS_FLAGS | 15638a51866fSRoland Dreier IB_QP_PKEY_INDEX | 15648a51866fSRoland Dreier IB_QP_MIN_RNR_TIMER | 15658a51866fSRoland Dreier IB_QP_PATH_MIG_STATE), 1566b42b63cfSSean Hefty [IB_QPT_XRC_INI] = (IB_QP_PORT | 1567b42b63cfSSean Hefty IB_QP_AV | 1568b42b63cfSSean Hefty IB_QP_TIMEOUT | 1569b42b63cfSSean Hefty IB_QP_RETRY_CNT | 1570b42b63cfSSean Hefty IB_QP_RNR_RETRY | 1571b42b63cfSSean Hefty IB_QP_MAX_QP_RD_ATOMIC | 1572b42b63cfSSean Hefty IB_QP_ALT_PATH | 1573b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS | 1574b42b63cfSSean Hefty IB_QP_PKEY_INDEX | 1575b42b63cfSSean Hefty IB_QP_PATH_MIG_STATE), 1576b42b63cfSSean Hefty [IB_QPT_XRC_TGT] = (IB_QP_PORT | 1577b42b63cfSSean Hefty IB_QP_AV | 1578b42b63cfSSean Hefty IB_QP_TIMEOUT | 1579b42b63cfSSean Hefty IB_QP_MAX_DEST_RD_ATOMIC | 1580b42b63cfSSean Hefty IB_QP_ALT_PATH | 1581b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS | 1582b42b63cfSSean Hefty IB_QP_PKEY_INDEX | 1583b42b63cfSSean Hefty IB_QP_MIN_RNR_TIMER | 1584b42b63cfSSean Hefty IB_QP_PATH_MIG_STATE), 15858a51866fSRoland Dreier [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | 15868a51866fSRoland Dreier IB_QP_QKEY), 15878a51866fSRoland Dreier [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | 15888a51866fSRoland Dreier IB_QP_QKEY), 15898a51866fSRoland Dreier } 15908a51866fSRoland Dreier } 15918a51866fSRoland Dreier }, 15928a51866fSRoland Dreier [IB_QPS_SQE] = { 15938a51866fSRoland Dreier [IB_QPS_RESET] = { .valid = 1 }, 15948a51866fSRoland Dreier [IB_QPS_ERR] = { .valid = 1 }, 15958a51866fSRoland Dreier [IB_QPS_RTS] = { 15968a51866fSRoland Dreier .valid = 1, 15978a51866fSRoland Dreier .opt_param = { 15988a51866fSRoland Dreier [IB_QPT_UD] = (IB_QP_CUR_STATE | 15998a51866fSRoland Dreier IB_QP_QKEY), 16008a51866fSRoland Dreier [IB_QPT_UC] = (IB_QP_CUR_STATE | 16018a51866fSRoland Dreier IB_QP_ACCESS_FLAGS), 16028a51866fSRoland Dreier [IB_QPT_SMI] = (IB_QP_CUR_STATE | 16038a51866fSRoland Dreier IB_QP_QKEY), 16048a51866fSRoland Dreier [IB_QPT_GSI] = (IB_QP_CUR_STATE | 16058a51866fSRoland Dreier IB_QP_QKEY), 16068a51866fSRoland Dreier } 16078a51866fSRoland Dreier } 16088a51866fSRoland Dreier }, 16098a51866fSRoland Dreier [IB_QPS_ERR] = { 16108a51866fSRoland Dreier [IB_QPS_RESET] = { .valid = 1 }, 16118a51866fSRoland Dreier [IB_QPS_ERR] = { .valid = 1 } 16128a51866fSRoland Dreier } 16138a51866fSRoland Dreier }; 16148a51866fSRoland Dreier 161519b1f540SLeon Romanovsky bool ib_modify_qp_is_ok(enum ib_qp_state cur_state, enum ib_qp_state next_state, 1616d31131bbSKamal Heib enum ib_qp_type type, enum ib_qp_attr_mask mask) 16178a51866fSRoland Dreier { 16188a51866fSRoland Dreier enum ib_qp_attr_mask req_param, opt_param; 16198a51866fSRoland Dreier 16208a51866fSRoland Dreier if (mask & IB_QP_CUR_STATE && 16218a51866fSRoland Dreier cur_state != IB_QPS_RTR && cur_state != IB_QPS_RTS && 16228a51866fSRoland Dreier cur_state != IB_QPS_SQD && cur_state != IB_QPS_SQE) 162319b1f540SLeon Romanovsky return false; 16248a51866fSRoland Dreier 16258a51866fSRoland Dreier if (!qp_state_table[cur_state][next_state].valid) 162619b1f540SLeon Romanovsky return false; 16278a51866fSRoland Dreier 16288a51866fSRoland Dreier req_param = qp_state_table[cur_state][next_state].req_param[type]; 16298a51866fSRoland Dreier opt_param = qp_state_table[cur_state][next_state].opt_param[type]; 16308a51866fSRoland Dreier 16318a51866fSRoland Dreier if ((mask & req_param) != req_param) 163219b1f540SLeon Romanovsky return false; 16338a51866fSRoland Dreier 16348a51866fSRoland Dreier if (mask & ~(req_param | opt_param | IB_QP_STATE)) 163519b1f540SLeon Romanovsky return false; 16368a51866fSRoland Dreier 163719b1f540SLeon Romanovsky return true; 16388a51866fSRoland Dreier } 16398a51866fSRoland Dreier EXPORT_SYMBOL(ib_modify_qp_is_ok); 16408a51866fSRoland Dreier 1641947c99ecSParav Pandit /** 1642947c99ecSParav Pandit * ib_resolve_eth_dmac - Resolve destination mac address 1643947c99ecSParav Pandit * @device: Device to consider 1644947c99ecSParav Pandit * @ah_attr: address handle attribute which describes the 1645947c99ecSParav Pandit * source and destination parameters 1646947c99ecSParav Pandit * ib_resolve_eth_dmac() resolves destination mac address and L3 hop limit It 1647947c99ecSParav Pandit * returns 0 on success or appropriate error code. It initializes the 1648947c99ecSParav Pandit * necessary ah_attr fields when call is successful. 1649947c99ecSParav Pandit */ 1650c0348eb0SParav Pandit static int ib_resolve_eth_dmac(struct ib_device *device, 165190898850SDasaratharaman Chandramouli struct rdma_ah_attr *ah_attr) 1652ed4c54e5SOr Gerlitz { 1653ed4c54e5SOr Gerlitz int ret = 0; 1654d8966fcdSDasaratharaman Chandramouli 16559636a56fSNoa Osherovich if (rdma_is_multicast_addr((struct in6_addr *)ah_attr->grh.dgid.raw)) { 16569636a56fSNoa Osherovich if (ipv6_addr_v4mapped((struct in6_addr *)ah_attr->grh.dgid.raw)) { 16579636a56fSNoa Osherovich __be32 addr = 0; 16589636a56fSNoa Osherovich 16599636a56fSNoa Osherovich memcpy(&addr, ah_attr->grh.dgid.raw + 12, 4); 16609636a56fSNoa Osherovich ip_eth_mc_map(addr, (char *)ah_attr->roce.dmac); 16619636a56fSNoa Osherovich } else { 16629636a56fSNoa Osherovich ipv6_eth_mc_map((struct in6_addr *)ah_attr->grh.dgid.raw, 16639636a56fSNoa Osherovich (char *)ah_attr->roce.dmac); 16649636a56fSNoa Osherovich } 1665ed4c54e5SOr Gerlitz } else { 16661060f865SParav Pandit ret = ib_resolve_unicast_gid_dmac(device, ah_attr); 1667ed4c54e5SOr Gerlitz } 1668ed4c54e5SOr Gerlitz return ret; 1669ed4c54e5SOr Gerlitz } 1670ed4c54e5SOr Gerlitz 16718d9ec9adSJason Gunthorpe static bool is_qp_type_connected(const struct ib_qp *qp) 16728d9ec9adSJason Gunthorpe { 16738d9ec9adSJason Gunthorpe return (qp->qp_type == IB_QPT_UC || 16748d9ec9adSJason Gunthorpe qp->qp_type == IB_QPT_RC || 16758d9ec9adSJason Gunthorpe qp->qp_type == IB_QPT_XRC_INI || 16768d9ec9adSJason Gunthorpe qp->qp_type == IB_QPT_XRC_TGT); 16778d9ec9adSJason Gunthorpe } 16788d9ec9adSJason Gunthorpe 16792988ca08SMauro Carvalho Chehab /* 1680b96ac05aSParav Pandit * IB core internal function to perform QP attributes modification. 1681a512c2fbSParav Pandit */ 1682b96ac05aSParav Pandit static int _ib_modify_qp(struct ib_qp *qp, struct ib_qp_attr *attr, 1683a512c2fbSParav Pandit int attr_mask, struct ib_udata *udata) 1684a512c2fbSParav Pandit { 16851fb7f897SMark Bloch u32 port = attr_mask & IB_QP_PORT ? attr->port_num : qp->port; 16868d9ec9adSJason Gunthorpe const struct ib_gid_attr *old_sgid_attr_av; 16878d9ec9adSJason Gunthorpe const struct ib_gid_attr *old_sgid_attr_alt_av; 1688a512c2fbSParav Pandit int ret; 1689a512c2fbSParav Pandit 169051aab126SMaor Gottlieb attr->xmit_slave = NULL; 16918d9ec9adSJason Gunthorpe if (attr_mask & IB_QP_AV) { 16928d9ec9adSJason Gunthorpe ret = rdma_fill_sgid_attr(qp->device, &attr->ah_attr, 16938d9ec9adSJason Gunthorpe &old_sgid_attr_av); 16948d9ec9adSJason Gunthorpe if (ret) 16958d9ec9adSJason Gunthorpe return ret; 169651aab126SMaor Gottlieb 169751aab126SMaor Gottlieb if (attr->ah_attr.type == RDMA_AH_ATTR_TYPE_ROCE && 169851aab126SMaor Gottlieb is_qp_type_connected(qp)) { 169951aab126SMaor Gottlieb struct net_device *slave; 170051aab126SMaor Gottlieb 170151aab126SMaor Gottlieb /* 170251aab126SMaor Gottlieb * If the user provided the qp_attr then we have to 170351aab126SMaor Gottlieb * resolve it. Kerne users have to provide already 170451aab126SMaor Gottlieb * resolved rdma_ah_attr's. 170551aab126SMaor Gottlieb */ 170651aab126SMaor Gottlieb if (udata) { 170751aab126SMaor Gottlieb ret = ib_resolve_eth_dmac(qp->device, 170851aab126SMaor Gottlieb &attr->ah_attr); 170951aab126SMaor Gottlieb if (ret) 171051aab126SMaor Gottlieb goto out_av; 171151aab126SMaor Gottlieb } 171251aab126SMaor Gottlieb slave = rdma_lag_get_ah_roce_slave(qp->device, 171351aab126SMaor Gottlieb &attr->ah_attr, 171451aab126SMaor Gottlieb GFP_KERNEL); 17155333499cSJing Xiangfeng if (IS_ERR(slave)) { 17165333499cSJing Xiangfeng ret = PTR_ERR(slave); 171751aab126SMaor Gottlieb goto out_av; 17185333499cSJing Xiangfeng } 171951aab126SMaor Gottlieb attr->xmit_slave = slave; 172051aab126SMaor Gottlieb } 17218d9ec9adSJason Gunthorpe } 17228d9ec9adSJason Gunthorpe if (attr_mask & IB_QP_ALT_PATH) { 17231a1f460fSJason Gunthorpe /* 17241a1f460fSJason Gunthorpe * FIXME: This does not track the migration state, so if the 17251a1f460fSJason Gunthorpe * user loads a new alternate path after the HW has migrated 17261a1f460fSJason Gunthorpe * from primary->alternate we will keep the wrong 17271a1f460fSJason Gunthorpe * references. This is OK for IB because the reference 17281a1f460fSJason Gunthorpe * counting does not serve any functional purpose. 17291a1f460fSJason Gunthorpe */ 17308d9ec9adSJason Gunthorpe ret = rdma_fill_sgid_attr(qp->device, &attr->alt_ah_attr, 17318d9ec9adSJason Gunthorpe &old_sgid_attr_alt_av); 17328d9ec9adSJason Gunthorpe if (ret) 17338d9ec9adSJason Gunthorpe goto out_av; 17347a5c938bSJason Gunthorpe 17357a5c938bSJason Gunthorpe /* 17367a5c938bSJason Gunthorpe * Today the core code can only handle alternate paths and APM 17377a5c938bSJason Gunthorpe * for IB. Ban them in roce mode. 17387a5c938bSJason Gunthorpe */ 17397a5c938bSJason Gunthorpe if (!(rdma_protocol_ib(qp->device, 17407a5c938bSJason Gunthorpe attr->alt_ah_attr.port_num) && 17417a5c938bSJason Gunthorpe rdma_protocol_ib(qp->device, port))) { 174247fda651SLi Heng ret = -EINVAL; 17437a5c938bSJason Gunthorpe goto out; 17447a5c938bSJason Gunthorpe } 17458d9ec9adSJason Gunthorpe } 17468d9ec9adSJason Gunthorpe 1747727b7e9aSMajd Dibbiny if (rdma_ib_or_roce(qp->device, port)) { 1748727b7e9aSMajd Dibbiny if (attr_mask & IB_QP_RQ_PSN && attr->rq_psn & ~0xffffff) { 174943c7c851SJason Gunthorpe dev_warn(&qp->device->dev, 175043c7c851SJason Gunthorpe "%s rq_psn overflow, masking to 24 bits\n", 175143c7c851SJason Gunthorpe __func__); 1752727b7e9aSMajd Dibbiny attr->rq_psn &= 0xffffff; 1753727b7e9aSMajd Dibbiny } 1754727b7e9aSMajd Dibbiny 1755727b7e9aSMajd Dibbiny if (attr_mask & IB_QP_SQ_PSN && attr->sq_psn & ~0xffffff) { 175643c7c851SJason Gunthorpe dev_warn(&qp->device->dev, 175743c7c851SJason Gunthorpe " %s sq_psn overflow, masking to 24 bits\n", 175843c7c851SJason Gunthorpe __func__); 1759727b7e9aSMajd Dibbiny attr->sq_psn &= 0xffffff; 1760727b7e9aSMajd Dibbiny } 1761727b7e9aSMajd Dibbiny } 1762727b7e9aSMajd Dibbiny 176399fa331dSMark Zhang /* 176499fa331dSMark Zhang * Bind this qp to a counter automatically based on the rdma counter 176599fa331dSMark Zhang * rules. This only set in RST2INIT with port specified 176699fa331dSMark Zhang */ 176799fa331dSMark Zhang if (!qp->counter && (attr_mask & IB_QP_PORT) && 176899fa331dSMark Zhang ((attr_mask & IB_QP_STATE) && attr->qp_state == IB_QPS_INIT)) 176999fa331dSMark Zhang rdma_counter_bind_qp_auto(qp, attr->port_num); 177099fa331dSMark Zhang 1771498ca3c8SNoa Osherovich ret = ib_security_modify_qp(qp, attr, attr_mask, udata); 17721a1f460fSJason Gunthorpe if (ret) 17731a1f460fSJason Gunthorpe goto out; 17741a1f460fSJason Gunthorpe 17751a1f460fSJason Gunthorpe if (attr_mask & IB_QP_PORT) 1776498ca3c8SNoa Osherovich qp->port = attr->port_num; 17771a1f460fSJason Gunthorpe if (attr_mask & IB_QP_AV) 17781a1f460fSJason Gunthorpe qp->av_sgid_attr = 17791a1f460fSJason Gunthorpe rdma_update_sgid_attr(&attr->ah_attr, qp->av_sgid_attr); 17801a1f460fSJason Gunthorpe if (attr_mask & IB_QP_ALT_PATH) 17811a1f460fSJason Gunthorpe qp->alt_path_sgid_attr = rdma_update_sgid_attr( 17821a1f460fSJason Gunthorpe &attr->alt_ah_attr, qp->alt_path_sgid_attr); 1783498ca3c8SNoa Osherovich 17848d9ec9adSJason Gunthorpe out: 17858d9ec9adSJason Gunthorpe if (attr_mask & IB_QP_ALT_PATH) 17868d9ec9adSJason Gunthorpe rdma_unfill_sgid_attr(&attr->alt_ah_attr, old_sgid_attr_alt_av); 17878d9ec9adSJason Gunthorpe out_av: 178851aab126SMaor Gottlieb if (attr_mask & IB_QP_AV) { 178951aab126SMaor Gottlieb rdma_lag_put_ah_roce_slave(attr->xmit_slave); 17908d9ec9adSJason Gunthorpe rdma_unfill_sgid_attr(&attr->ah_attr, old_sgid_attr_av); 179151aab126SMaor Gottlieb } 1792498ca3c8SNoa Osherovich return ret; 1793a512c2fbSParav Pandit } 1794b96ac05aSParav Pandit 1795b96ac05aSParav Pandit /** 1796b96ac05aSParav Pandit * ib_modify_qp_with_udata - Modifies the attributes for the specified QP. 1797b96ac05aSParav Pandit * @ib_qp: The QP to modify. 1798b96ac05aSParav Pandit * @attr: On input, specifies the QP attributes to modify. On output, 1799b96ac05aSParav Pandit * the current values of selected QP attributes are returned. 1800b96ac05aSParav Pandit * @attr_mask: A bit-mask used to specify which attributes of the QP 1801b96ac05aSParav Pandit * are being modified. 1802b96ac05aSParav Pandit * @udata: pointer to user's input output buffer information 1803b96ac05aSParav Pandit * are being modified. 1804b96ac05aSParav Pandit * It returns 0 on success and returns appropriate error code on error. 1805b96ac05aSParav Pandit */ 1806b96ac05aSParav Pandit int ib_modify_qp_with_udata(struct ib_qp *ib_qp, struct ib_qp_attr *attr, 1807b96ac05aSParav Pandit int attr_mask, struct ib_udata *udata) 1808b96ac05aSParav Pandit { 18098d9ec9adSJason Gunthorpe return _ib_modify_qp(ib_qp->real_qp, attr, attr_mask, udata); 1810b96ac05aSParav Pandit } 1811a512c2fbSParav Pandit EXPORT_SYMBOL(ib_modify_qp_with_udata); 1812a512c2fbSParav Pandit 18131fb7f897SMark Bloch int ib_get_eth_speed(struct ib_device *dev, u32 port_num, u16 *speed, u8 *width) 1814d4186194SYuval Shaia { 1815d4186194SYuval Shaia int rc; 1816d4186194SYuval Shaia u32 netdev_speed; 1817d4186194SYuval Shaia struct net_device *netdev; 1818d4186194SYuval Shaia struct ethtool_link_ksettings lksettings; 1819d4186194SYuval Shaia 1820d4186194SYuval Shaia if (rdma_port_get_link_layer(dev, port_num) != IB_LINK_LAYER_ETHERNET) 1821d4186194SYuval Shaia return -EINVAL; 1822d4186194SYuval Shaia 1823c2261dd7SJason Gunthorpe netdev = ib_device_get_netdev(dev, port_num); 1824d4186194SYuval Shaia if (!netdev) 1825d4186194SYuval Shaia return -ENODEV; 1826d4186194SYuval Shaia 1827d4186194SYuval Shaia rtnl_lock(); 1828d4186194SYuval Shaia rc = __ethtool_get_link_ksettings(netdev, &lksettings); 1829d4186194SYuval Shaia rtnl_unlock(); 1830d4186194SYuval Shaia 1831d4186194SYuval Shaia dev_put(netdev); 1832d4186194SYuval Shaia 183328b08657SKamal Heib if (!rc && lksettings.base.speed != (u32)SPEED_UNKNOWN) { 1834d4186194SYuval Shaia netdev_speed = lksettings.base.speed; 1835d4186194SYuval Shaia } else { 1836d4186194SYuval Shaia netdev_speed = SPEED_1000; 1837*3cea7b4aSWenpeng Liang pr_warn("%s speed is unknown, defaulting to %u\n", netdev->name, 1838d4186194SYuval Shaia netdev_speed); 1839d4186194SYuval Shaia } 1840d4186194SYuval Shaia 1841d4186194SYuval Shaia if (netdev_speed <= SPEED_1000) { 1842d4186194SYuval Shaia *width = IB_WIDTH_1X; 1843d4186194SYuval Shaia *speed = IB_SPEED_SDR; 1844d4186194SYuval Shaia } else if (netdev_speed <= SPEED_10000) { 1845d4186194SYuval Shaia *width = IB_WIDTH_1X; 1846d4186194SYuval Shaia *speed = IB_SPEED_FDR10; 1847d4186194SYuval Shaia } else if (netdev_speed <= SPEED_20000) { 1848d4186194SYuval Shaia *width = IB_WIDTH_4X; 1849d4186194SYuval Shaia *speed = IB_SPEED_DDR; 1850d4186194SYuval Shaia } else if (netdev_speed <= SPEED_25000) { 1851d4186194SYuval Shaia *width = IB_WIDTH_1X; 1852d4186194SYuval Shaia *speed = IB_SPEED_EDR; 1853d4186194SYuval Shaia } else if (netdev_speed <= SPEED_40000) { 1854d4186194SYuval Shaia *width = IB_WIDTH_4X; 1855d4186194SYuval Shaia *speed = IB_SPEED_FDR10; 1856d4186194SYuval Shaia } else { 1857d4186194SYuval Shaia *width = IB_WIDTH_4X; 1858d4186194SYuval Shaia *speed = IB_SPEED_EDR; 1859d4186194SYuval Shaia } 1860d4186194SYuval Shaia 1861d4186194SYuval Shaia return 0; 1862d4186194SYuval Shaia } 1863d4186194SYuval Shaia EXPORT_SYMBOL(ib_get_eth_speed); 1864d4186194SYuval Shaia 18651da177e4SLinus Torvalds int ib_modify_qp(struct ib_qp *qp, 18661da177e4SLinus Torvalds struct ib_qp_attr *qp_attr, 18671da177e4SLinus Torvalds int qp_attr_mask) 18681da177e4SLinus Torvalds { 1869b96ac05aSParav Pandit return _ib_modify_qp(qp->real_qp, qp_attr, qp_attr_mask, NULL); 18701da177e4SLinus Torvalds } 18711da177e4SLinus Torvalds EXPORT_SYMBOL(ib_modify_qp); 18721da177e4SLinus Torvalds 18731da177e4SLinus Torvalds int ib_query_qp(struct ib_qp *qp, 18741da177e4SLinus Torvalds struct ib_qp_attr *qp_attr, 18751da177e4SLinus Torvalds int qp_attr_mask, 18761da177e4SLinus Torvalds struct ib_qp_init_attr *qp_init_attr) 18771da177e4SLinus Torvalds { 18788d9ec9adSJason Gunthorpe qp_attr->ah_attr.grh.sgid_attr = NULL; 18798d9ec9adSJason Gunthorpe qp_attr->alt_ah_attr.grh.sgid_attr = NULL; 18808d9ec9adSJason Gunthorpe 18813023a1e9SKamal Heib return qp->device->ops.query_qp ? 18823023a1e9SKamal Heib qp->device->ops.query_qp(qp->real_qp, qp_attr, qp_attr_mask, 18833023a1e9SKamal Heib qp_init_attr) : -EOPNOTSUPP; 18841da177e4SLinus Torvalds } 18851da177e4SLinus Torvalds EXPORT_SYMBOL(ib_query_qp); 18861da177e4SLinus Torvalds 18870e0ec7e0SSean Hefty int ib_close_qp(struct ib_qp *qp) 18880e0ec7e0SSean Hefty { 18890e0ec7e0SSean Hefty struct ib_qp *real_qp; 18900e0ec7e0SSean Hefty unsigned long flags; 18910e0ec7e0SSean Hefty 18920e0ec7e0SSean Hefty real_qp = qp->real_qp; 18930e0ec7e0SSean Hefty if (real_qp == qp) 18940e0ec7e0SSean Hefty return -EINVAL; 18950e0ec7e0SSean Hefty 189640adf686SParav Pandit spin_lock_irqsave(&real_qp->device->qp_open_list_lock, flags); 18970e0ec7e0SSean Hefty list_del(&qp->open_list); 189840adf686SParav Pandit spin_unlock_irqrestore(&real_qp->device->qp_open_list_lock, flags); 18990e0ec7e0SSean Hefty 19000e0ec7e0SSean Hefty atomic_dec(&real_qp->usecnt); 19014a50881bSMoni Shoua if (qp->qp_sec) 1902d291f1a6SDaniel Jurgens ib_close_shared_qp_security(qp->qp_sec); 19030e0ec7e0SSean Hefty kfree(qp); 19040e0ec7e0SSean Hefty 19050e0ec7e0SSean Hefty return 0; 19060e0ec7e0SSean Hefty } 19070e0ec7e0SSean Hefty EXPORT_SYMBOL(ib_close_qp); 19080e0ec7e0SSean Hefty 19090e0ec7e0SSean Hefty static int __ib_destroy_shared_qp(struct ib_qp *qp) 19100e0ec7e0SSean Hefty { 19110e0ec7e0SSean Hefty struct ib_xrcd *xrcd; 19120e0ec7e0SSean Hefty struct ib_qp *real_qp; 19130e0ec7e0SSean Hefty int ret; 19140e0ec7e0SSean Hefty 19150e0ec7e0SSean Hefty real_qp = qp->real_qp; 19160e0ec7e0SSean Hefty xrcd = real_qp->xrcd; 19176f3ca6f4SMaor Gottlieb down_write(&xrcd->tgt_qps_rwsem); 19180e0ec7e0SSean Hefty ib_close_qp(qp); 19190e0ec7e0SSean Hefty if (atomic_read(&real_qp->usecnt) == 0) 19206f3ca6f4SMaor Gottlieb xa_erase(&xrcd->tgt_qps, real_qp->qp_num); 19210e0ec7e0SSean Hefty else 19220e0ec7e0SSean Hefty real_qp = NULL; 19236f3ca6f4SMaor Gottlieb up_write(&xrcd->tgt_qps_rwsem); 19240e0ec7e0SSean Hefty 19250e0ec7e0SSean Hefty if (real_qp) { 19260e0ec7e0SSean Hefty ret = ib_destroy_qp(real_qp); 19270e0ec7e0SSean Hefty if (!ret) 19280e0ec7e0SSean Hefty atomic_dec(&xrcd->usecnt); 19290e0ec7e0SSean Hefty } 19300e0ec7e0SSean Hefty 19310e0ec7e0SSean Hefty return 0; 19320e0ec7e0SSean Hefty } 19330e0ec7e0SSean Hefty 1934c4367a26SShamir Rabinovitch int ib_destroy_qp_user(struct ib_qp *qp, struct ib_udata *udata) 19351da177e4SLinus Torvalds { 19361a1f460fSJason Gunthorpe const struct ib_gid_attr *alt_path_sgid_attr = qp->alt_path_sgid_attr; 19371a1f460fSJason Gunthorpe const struct ib_gid_attr *av_sgid_attr = qp->av_sgid_attr; 19381da177e4SLinus Torvalds struct ib_pd *pd; 19391da177e4SLinus Torvalds struct ib_cq *scq, *rcq; 19401da177e4SLinus Torvalds struct ib_srq *srq; 1941a9017e23SYishai Hadas struct ib_rwq_ind_table *ind_tbl; 1942d291f1a6SDaniel Jurgens struct ib_qp_security *sec; 19431da177e4SLinus Torvalds int ret; 19441da177e4SLinus Torvalds 1945fffb0383SChristoph Hellwig WARN_ON_ONCE(qp->mrs_used > 0); 1946fffb0383SChristoph Hellwig 19470e0ec7e0SSean Hefty if (atomic_read(&qp->usecnt)) 19480e0ec7e0SSean Hefty return -EBUSY; 19490e0ec7e0SSean Hefty 19500e0ec7e0SSean Hefty if (qp->real_qp != qp) 19510e0ec7e0SSean Hefty return __ib_destroy_shared_qp(qp); 19520e0ec7e0SSean Hefty 19531da177e4SLinus Torvalds pd = qp->pd; 19541da177e4SLinus Torvalds scq = qp->send_cq; 19551da177e4SLinus Torvalds rcq = qp->recv_cq; 19561da177e4SLinus Torvalds srq = qp->srq; 1957a9017e23SYishai Hadas ind_tbl = qp->rwq_ind_tbl; 1958d291f1a6SDaniel Jurgens sec = qp->qp_sec; 1959d291f1a6SDaniel Jurgens if (sec) 1960d291f1a6SDaniel Jurgens ib_destroy_qp_security_begin(sec); 19611da177e4SLinus Torvalds 1962a060b562SChristoph Hellwig if (!qp->uobject) 1963a060b562SChristoph Hellwig rdma_rw_cleanup_mrs(qp); 1964a060b562SChristoph Hellwig 196599fa331dSMark Zhang rdma_counter_unbind_qp(qp, true); 196678a0cd64SLeon Romanovsky rdma_restrack_del(&qp->res); 1967c4367a26SShamir Rabinovitch ret = qp->device->ops.destroy_qp(qp, udata); 19681da177e4SLinus Torvalds if (!ret) { 19691a1f460fSJason Gunthorpe if (alt_path_sgid_attr) 19701a1f460fSJason Gunthorpe rdma_put_gid_attr(alt_path_sgid_attr); 19711a1f460fSJason Gunthorpe if (av_sgid_attr) 19721a1f460fSJason Gunthorpe rdma_put_gid_attr(av_sgid_attr); 1973b42b63cfSSean Hefty if (pd) 19741da177e4SLinus Torvalds atomic_dec(&pd->usecnt); 1975b42b63cfSSean Hefty if (scq) 19761da177e4SLinus Torvalds atomic_dec(&scq->usecnt); 1977b42b63cfSSean Hefty if (rcq) 19781da177e4SLinus Torvalds atomic_dec(&rcq->usecnt); 19791da177e4SLinus Torvalds if (srq) 19801da177e4SLinus Torvalds atomic_dec(&srq->usecnt); 1981a9017e23SYishai Hadas if (ind_tbl) 1982a9017e23SYishai Hadas atomic_dec(&ind_tbl->usecnt); 1983d291f1a6SDaniel Jurgens if (sec) 1984d291f1a6SDaniel Jurgens ib_destroy_qp_security_end(sec); 1985d291f1a6SDaniel Jurgens } else { 1986d291f1a6SDaniel Jurgens if (sec) 1987d291f1a6SDaniel Jurgens ib_destroy_qp_security_abort(sec); 19881da177e4SLinus Torvalds } 19891da177e4SLinus Torvalds 19901da177e4SLinus Torvalds return ret; 19911da177e4SLinus Torvalds } 1992c4367a26SShamir Rabinovitch EXPORT_SYMBOL(ib_destroy_qp_user); 19931da177e4SLinus Torvalds 19941da177e4SLinus Torvalds /* Completion queues */ 19951da177e4SLinus Torvalds 19967350cdd0SBharat Potnuri struct ib_cq *__ib_create_cq(struct ib_device *device, 19971da177e4SLinus Torvalds ib_comp_handler comp_handler, 19981da177e4SLinus Torvalds void (*event_handler)(struct ib_event *, void *), 19998e37210bSMatan Barak void *cq_context, 20007350cdd0SBharat Potnuri const struct ib_cq_init_attr *cq_attr, 20017350cdd0SBharat Potnuri const char *caller) 20021da177e4SLinus Torvalds { 20031da177e4SLinus Torvalds struct ib_cq *cq; 2004e39afe3dSLeon Romanovsky int ret; 20051da177e4SLinus Torvalds 2006e39afe3dSLeon Romanovsky cq = rdma_zalloc_drv_obj(device, ib_cq); 2007e39afe3dSLeon Romanovsky if (!cq) 2008e39afe3dSLeon Romanovsky return ERR_PTR(-ENOMEM); 20091da177e4SLinus Torvalds 20101da177e4SLinus Torvalds cq->device = device; 2011b5e81bf5SRoland Dreier cq->uobject = NULL; 20121da177e4SLinus Torvalds cq->comp_handler = comp_handler; 20131da177e4SLinus Torvalds cq->event_handler = event_handler; 20141da177e4SLinus Torvalds cq->cq_context = cq_context; 20151da177e4SLinus Torvalds atomic_set(&cq->usecnt, 0); 201613ef5539SLeon Romanovsky 201713ef5539SLeon Romanovsky rdma_restrack_new(&cq->res, RDMA_RESTRACK_CQ); 2018b09c4d70SLeon Romanovsky rdma_restrack_set_name(&cq->res, caller); 2019e39afe3dSLeon Romanovsky 2020e39afe3dSLeon Romanovsky ret = device->ops.create_cq(cq, cq_attr, NULL); 2021e39afe3dSLeon Romanovsky if (ret) { 202213ef5539SLeon Romanovsky rdma_restrack_put(&cq->res); 2023e39afe3dSLeon Romanovsky kfree(cq); 2024e39afe3dSLeon Romanovsky return ERR_PTR(ret); 20251da177e4SLinus Torvalds } 20261da177e4SLinus Torvalds 2027c34a23c2SLeon Romanovsky rdma_restrack_add(&cq->res); 20281da177e4SLinus Torvalds return cq; 20291da177e4SLinus Torvalds } 20307350cdd0SBharat Potnuri EXPORT_SYMBOL(__ib_create_cq); 20311da177e4SLinus Torvalds 20324190b4e9SLeon Romanovsky int rdma_set_cq_moderation(struct ib_cq *cq, u16 cq_count, u16 cq_period) 20332dd57162SEli Cohen { 20343446cbd2SYamin Friedman if (cq->shared) 20353446cbd2SYamin Friedman return -EOPNOTSUPP; 20363446cbd2SYamin Friedman 20373023a1e9SKamal Heib return cq->device->ops.modify_cq ? 20383023a1e9SKamal Heib cq->device->ops.modify_cq(cq, cq_count, 20393023a1e9SKamal Heib cq_period) : -EOPNOTSUPP; 20402dd57162SEli Cohen } 20414190b4e9SLeon Romanovsky EXPORT_SYMBOL(rdma_set_cq_moderation); 20422dd57162SEli Cohen 2043c4367a26SShamir Rabinovitch int ib_destroy_cq_user(struct ib_cq *cq, struct ib_udata *udata) 20441da177e4SLinus Torvalds { 204543d781b9SLeon Romanovsky int ret; 204643d781b9SLeon Romanovsky 20473446cbd2SYamin Friedman if (WARN_ON_ONCE(cq->shared)) 20483446cbd2SYamin Friedman return -EOPNOTSUPP; 20493446cbd2SYamin Friedman 20501da177e4SLinus Torvalds if (atomic_read(&cq->usecnt)) 20511da177e4SLinus Torvalds return -EBUSY; 20521da177e4SLinus Torvalds 205343d781b9SLeon Romanovsky ret = cq->device->ops.destroy_cq(cq, udata); 205443d781b9SLeon Romanovsky if (ret) 205543d781b9SLeon Romanovsky return ret; 205643d781b9SLeon Romanovsky 205708f294a1SLeon Romanovsky rdma_restrack_del(&cq->res); 2058e39afe3dSLeon Romanovsky kfree(cq); 205943d781b9SLeon Romanovsky return ret; 20601da177e4SLinus Torvalds } 2061c4367a26SShamir Rabinovitch EXPORT_SYMBOL(ib_destroy_cq_user); 20621da177e4SLinus Torvalds 2063a74cd4afSRoland Dreier int ib_resize_cq(struct ib_cq *cq, int cqe) 20641da177e4SLinus Torvalds { 20653446cbd2SYamin Friedman if (cq->shared) 20663446cbd2SYamin Friedman return -EOPNOTSUPP; 20673446cbd2SYamin Friedman 20683023a1e9SKamal Heib return cq->device->ops.resize_cq ? 20693023a1e9SKamal Heib cq->device->ops.resize_cq(cq, cqe, NULL) : -EOPNOTSUPP; 20701da177e4SLinus Torvalds } 20711da177e4SLinus Torvalds EXPORT_SYMBOL(ib_resize_cq); 20721da177e4SLinus Torvalds 20731da177e4SLinus Torvalds /* Memory regions */ 20741da177e4SLinus Torvalds 207533006bd4SMoni Shoua struct ib_mr *ib_reg_user_mr(struct ib_pd *pd, u64 start, u64 length, 207633006bd4SMoni Shoua u64 virt_addr, int access_flags) 207733006bd4SMoni Shoua { 207833006bd4SMoni Shoua struct ib_mr *mr; 207933006bd4SMoni Shoua 208033006bd4SMoni Shoua if (access_flags & IB_ACCESS_ON_DEMAND) { 208133006bd4SMoni Shoua if (!(pd->device->attrs.device_cap_flags & 208233006bd4SMoni Shoua IB_DEVICE_ON_DEMAND_PAGING)) { 208333006bd4SMoni Shoua pr_debug("ODP support not available\n"); 208433006bd4SMoni Shoua return ERR_PTR(-EINVAL); 208533006bd4SMoni Shoua } 208633006bd4SMoni Shoua } 208733006bd4SMoni Shoua 208833006bd4SMoni Shoua mr = pd->device->ops.reg_user_mr(pd, start, length, virt_addr, 208933006bd4SMoni Shoua access_flags, NULL); 209033006bd4SMoni Shoua 209133006bd4SMoni Shoua if (IS_ERR(mr)) 209233006bd4SMoni Shoua return mr; 209333006bd4SMoni Shoua 209433006bd4SMoni Shoua mr->device = pd->device; 209533006bd4SMoni Shoua mr->pd = pd; 209633006bd4SMoni Shoua mr->dm = NULL; 209733006bd4SMoni Shoua atomic_inc(&pd->usecnt); 209813ef5539SLeon Romanovsky 209913ef5539SLeon Romanovsky rdma_restrack_new(&mr->res, RDMA_RESTRACK_MR); 2100b09c4d70SLeon Romanovsky rdma_restrack_parent_name(&mr->res, &pd->res); 2101c34a23c2SLeon Romanovsky rdma_restrack_add(&mr->res); 210233006bd4SMoni Shoua 210333006bd4SMoni Shoua return mr; 210433006bd4SMoni Shoua } 210533006bd4SMoni Shoua EXPORT_SYMBOL(ib_reg_user_mr); 210633006bd4SMoni Shoua 210787d8069fSMoni Shoua int ib_advise_mr(struct ib_pd *pd, enum ib_uverbs_advise_mr_advice advice, 210887d8069fSMoni Shoua u32 flags, struct ib_sge *sg_list, u32 num_sge) 210987d8069fSMoni Shoua { 211087d8069fSMoni Shoua if (!pd->device->ops.advise_mr) 211187d8069fSMoni Shoua return -EOPNOTSUPP; 211287d8069fSMoni Shoua 2113d4d7f596SMaor Gottlieb if (!num_sge) 2114d4d7f596SMaor Gottlieb return 0; 2115d4d7f596SMaor Gottlieb 211687d8069fSMoni Shoua return pd->device->ops.advise_mr(pd, advice, flags, sg_list, num_sge, 211787d8069fSMoni Shoua NULL); 211887d8069fSMoni Shoua } 211987d8069fSMoni Shoua EXPORT_SYMBOL(ib_advise_mr); 212087d8069fSMoni Shoua 2121c4367a26SShamir Rabinovitch int ib_dereg_mr_user(struct ib_mr *mr, struct ib_udata *udata) 21221da177e4SLinus Torvalds { 2123ab67ed8dSChristoph Hellwig struct ib_pd *pd = mr->pd; 2124be934ccaSAriel Levkovich struct ib_dm *dm = mr->dm; 21257c717d3aSMax Gurtovoy struct ib_sig_attrs *sig_attrs = mr->sig_attrs; 21261da177e4SLinus Torvalds int ret; 21271da177e4SLinus Torvalds 2128622db5b6SChuck Lever trace_mr_dereg(mr); 2129fccec5b8SSteve Wise rdma_restrack_del(&mr->res); 2130c4367a26SShamir Rabinovitch ret = mr->device->ops.dereg_mr(mr, udata); 2131be934ccaSAriel Levkovich if (!ret) { 21321da177e4SLinus Torvalds atomic_dec(&pd->usecnt); 2133be934ccaSAriel Levkovich if (dm) 2134be934ccaSAriel Levkovich atomic_dec(&dm->usecnt); 21357c717d3aSMax Gurtovoy kfree(sig_attrs); 2136be934ccaSAriel Levkovich } 21371da177e4SLinus Torvalds 21381da177e4SLinus Torvalds return ret; 21391da177e4SLinus Torvalds } 2140c4367a26SShamir Rabinovitch EXPORT_SYMBOL(ib_dereg_mr_user); 21411da177e4SLinus Torvalds 21429bee178bSSagi Grimberg /** 2143b64b74b1SGal Pressman * ib_alloc_mr() - Allocates a memory region 21449bee178bSSagi Grimberg * @pd: protection domain associated with the region 21459bee178bSSagi Grimberg * @mr_type: memory region type 21469bee178bSSagi Grimberg * @max_num_sg: maximum sg entries available for registration. 21479bee178bSSagi Grimberg * 21489bee178bSSagi Grimberg * Notes: 21499bee178bSSagi Grimberg * Memory registeration page/sg lists must not exceed max_num_sg. 21509bee178bSSagi Grimberg * For mr_type IB_MR_TYPE_MEM_REG, the total length cannot exceed 21519bee178bSSagi Grimberg * max_num_sg * used_page_size. 21529bee178bSSagi Grimberg * 21539bee178bSSagi Grimberg */ 2154b64b74b1SGal Pressman struct ib_mr *ib_alloc_mr(struct ib_pd *pd, enum ib_mr_type mr_type, 2155b64b74b1SGal Pressman u32 max_num_sg) 215617cd3a2dSSagi Grimberg { 215717cd3a2dSSagi Grimberg struct ib_mr *mr; 215817cd3a2dSSagi Grimberg 2159622db5b6SChuck Lever if (!pd->device->ops.alloc_mr) { 2160622db5b6SChuck Lever mr = ERR_PTR(-EOPNOTSUPP); 2161622db5b6SChuck Lever goto out; 2162622db5b6SChuck Lever } 216317cd3a2dSSagi Grimberg 2164622db5b6SChuck Lever if (mr_type == IB_MR_TYPE_INTEGRITY) { 2165622db5b6SChuck Lever WARN_ON_ONCE(1); 2166622db5b6SChuck Lever mr = ERR_PTR(-EINVAL); 2167622db5b6SChuck Lever goto out; 2168622db5b6SChuck Lever } 216926bc7eaeSIsrael Rukshin 217042a3b153SGal Pressman mr = pd->device->ops.alloc_mr(pd, mr_type, max_num_sg); 2171c5f42b21SGal Pressman if (IS_ERR(mr)) 2172c5f42b21SGal Pressman goto out; 2173c5f42b21SGal Pressman 217417cd3a2dSSagi Grimberg mr->device = pd->device; 217517cd3a2dSSagi Grimberg mr->pd = pd; 217654e7e48bSAriel Levkovich mr->dm = NULL; 217717cd3a2dSSagi Grimberg mr->uobject = NULL; 217817cd3a2dSSagi Grimberg atomic_inc(&pd->usecnt); 2179d4a85c30SSteve Wise mr->need_inval = false; 2180a0bc099aSMax Gurtovoy mr->type = mr_type; 21817c717d3aSMax Gurtovoy mr->sig_attrs = NULL; 218217cd3a2dSSagi Grimberg 218313ef5539SLeon Romanovsky rdma_restrack_new(&mr->res, RDMA_RESTRACK_MR); 2184b09c4d70SLeon Romanovsky rdma_restrack_parent_name(&mr->res, &pd->res); 2185c34a23c2SLeon Romanovsky rdma_restrack_add(&mr->res); 2186622db5b6SChuck Lever out: 2187622db5b6SChuck Lever trace_mr_alloc(pd, mr_type, max_num_sg, mr); 218817cd3a2dSSagi Grimberg return mr; 218917cd3a2dSSagi Grimberg } 2190b64b74b1SGal Pressman EXPORT_SYMBOL(ib_alloc_mr); 219100f7ec36SSteve Wise 219226bc7eaeSIsrael Rukshin /** 219326bc7eaeSIsrael Rukshin * ib_alloc_mr_integrity() - Allocates an integrity memory region 219426bc7eaeSIsrael Rukshin * @pd: protection domain associated with the region 219526bc7eaeSIsrael Rukshin * @max_num_data_sg: maximum data sg entries available for registration 219626bc7eaeSIsrael Rukshin * @max_num_meta_sg: maximum metadata sg entries available for 219726bc7eaeSIsrael Rukshin * registration 219826bc7eaeSIsrael Rukshin * 219926bc7eaeSIsrael Rukshin * Notes: 220026bc7eaeSIsrael Rukshin * Memory registration page/sg lists must not exceed max_num_sg, 220126bc7eaeSIsrael Rukshin * also the integrity page/sg lists must not exceed max_num_meta_sg. 220226bc7eaeSIsrael Rukshin * 220326bc7eaeSIsrael Rukshin */ 220426bc7eaeSIsrael Rukshin struct ib_mr *ib_alloc_mr_integrity(struct ib_pd *pd, 220526bc7eaeSIsrael Rukshin u32 max_num_data_sg, 220626bc7eaeSIsrael Rukshin u32 max_num_meta_sg) 220726bc7eaeSIsrael Rukshin { 220826bc7eaeSIsrael Rukshin struct ib_mr *mr; 22097c717d3aSMax Gurtovoy struct ib_sig_attrs *sig_attrs; 221026bc7eaeSIsrael Rukshin 22112cdfcdd8SMax Gurtovoy if (!pd->device->ops.alloc_mr_integrity || 2212622db5b6SChuck Lever !pd->device->ops.map_mr_sg_pi) { 2213622db5b6SChuck Lever mr = ERR_PTR(-EOPNOTSUPP); 2214622db5b6SChuck Lever goto out; 2215622db5b6SChuck Lever } 221626bc7eaeSIsrael Rukshin 2217622db5b6SChuck Lever if (!max_num_meta_sg) { 2218622db5b6SChuck Lever mr = ERR_PTR(-EINVAL); 2219622db5b6SChuck Lever goto out; 2220622db5b6SChuck Lever } 222126bc7eaeSIsrael Rukshin 22227c717d3aSMax Gurtovoy sig_attrs = kzalloc(sizeof(struct ib_sig_attrs), GFP_KERNEL); 2223622db5b6SChuck Lever if (!sig_attrs) { 2224622db5b6SChuck Lever mr = ERR_PTR(-ENOMEM); 2225622db5b6SChuck Lever goto out; 2226622db5b6SChuck Lever } 22277c717d3aSMax Gurtovoy 222826bc7eaeSIsrael Rukshin mr = pd->device->ops.alloc_mr_integrity(pd, max_num_data_sg, 222926bc7eaeSIsrael Rukshin max_num_meta_sg); 22307c717d3aSMax Gurtovoy if (IS_ERR(mr)) { 22317c717d3aSMax Gurtovoy kfree(sig_attrs); 2232622db5b6SChuck Lever goto out; 22337c717d3aSMax Gurtovoy } 223426bc7eaeSIsrael Rukshin 223526bc7eaeSIsrael Rukshin mr->device = pd->device; 223626bc7eaeSIsrael Rukshin mr->pd = pd; 223726bc7eaeSIsrael Rukshin mr->dm = NULL; 223826bc7eaeSIsrael Rukshin mr->uobject = NULL; 223926bc7eaeSIsrael Rukshin atomic_inc(&pd->usecnt); 224026bc7eaeSIsrael Rukshin mr->need_inval = false; 224126bc7eaeSIsrael Rukshin mr->type = IB_MR_TYPE_INTEGRITY; 22427c717d3aSMax Gurtovoy mr->sig_attrs = sig_attrs; 224326bc7eaeSIsrael Rukshin 224413ef5539SLeon Romanovsky rdma_restrack_new(&mr->res, RDMA_RESTRACK_MR); 2245b09c4d70SLeon Romanovsky rdma_restrack_parent_name(&mr->res, &pd->res); 2246c34a23c2SLeon Romanovsky rdma_restrack_add(&mr->res); 2247622db5b6SChuck Lever out: 2248622db5b6SChuck Lever trace_mr_integ_alloc(pd, max_num_data_sg, max_num_meta_sg, mr); 224926bc7eaeSIsrael Rukshin return mr; 225026bc7eaeSIsrael Rukshin } 225126bc7eaeSIsrael Rukshin EXPORT_SYMBOL(ib_alloc_mr_integrity); 225226bc7eaeSIsrael Rukshin 22531da177e4SLinus Torvalds /* Multicast groups */ 22541da177e4SLinus Torvalds 225552363335SNoa Osherovich static bool is_valid_mcast_lid(struct ib_qp *qp, u16 lid) 225652363335SNoa Osherovich { 225752363335SNoa Osherovich struct ib_qp_init_attr init_attr = {}; 225852363335SNoa Osherovich struct ib_qp_attr attr = {}; 225952363335SNoa Osherovich int num_eth_ports = 0; 2260904f4f64SParav Pandit unsigned int port; 226152363335SNoa Osherovich 226252363335SNoa Osherovich /* If QP state >= init, it is assigned to a port and we can check this 226352363335SNoa Osherovich * port only. 226452363335SNoa Osherovich */ 226552363335SNoa Osherovich if (!ib_query_qp(qp, &attr, IB_QP_STATE | IB_QP_PORT, &init_attr)) { 226652363335SNoa Osherovich if (attr.qp_state >= IB_QPS_INIT) { 2267e6f9bc34SAlex Estrin if (rdma_port_get_link_layer(qp->device, attr.port_num) != 226852363335SNoa Osherovich IB_LINK_LAYER_INFINIBAND) 226952363335SNoa Osherovich return true; 227052363335SNoa Osherovich goto lid_check; 227152363335SNoa Osherovich } 227252363335SNoa Osherovich } 227352363335SNoa Osherovich 227452363335SNoa Osherovich /* Can't get a quick answer, iterate over all ports */ 2275904f4f64SParav Pandit rdma_for_each_port(qp->device, port) 2276e6f9bc34SAlex Estrin if (rdma_port_get_link_layer(qp->device, port) != 227752363335SNoa Osherovich IB_LINK_LAYER_INFINIBAND) 227852363335SNoa Osherovich num_eth_ports++; 227952363335SNoa Osherovich 228052363335SNoa Osherovich /* If we have at lease one Ethernet port, RoCE annex declares that 228152363335SNoa Osherovich * multicast LID should be ignored. We can't tell at this step if the 228252363335SNoa Osherovich * QP belongs to an IB or Ethernet port. 228352363335SNoa Osherovich */ 228452363335SNoa Osherovich if (num_eth_ports) 228552363335SNoa Osherovich return true; 228652363335SNoa Osherovich 228752363335SNoa Osherovich /* If all the ports are IB, we can check according to IB spec. */ 228852363335SNoa Osherovich lid_check: 228952363335SNoa Osherovich return !(lid < be16_to_cpu(IB_MULTICAST_LID_BASE) || 229052363335SNoa Osherovich lid == be16_to_cpu(IB_LID_PERMISSIVE)); 229152363335SNoa Osherovich } 229252363335SNoa Osherovich 22931da177e4SLinus Torvalds int ib_attach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid) 22941da177e4SLinus Torvalds { 2295c3bccbfbSOr Gerlitz int ret; 2296c3bccbfbSOr Gerlitz 22973023a1e9SKamal Heib if (!qp->device->ops.attach_mcast) 229887915bf8SLeon Romanovsky return -EOPNOTSUPP; 2299be1d325aSNoa Osherovich 2300be1d325aSNoa Osherovich if (!rdma_is_multicast_addr((struct in6_addr *)gid->raw) || 2301be1d325aSNoa Osherovich qp->qp_type != IB_QPT_UD || !is_valid_mcast_lid(qp, lid)) 23020c33aeedSJack Morgenstein return -EINVAL; 23030c33aeedSJack Morgenstein 23043023a1e9SKamal Heib ret = qp->device->ops.attach_mcast(qp, gid, lid); 2305c3bccbfbSOr Gerlitz if (!ret) 2306c3bccbfbSOr Gerlitz atomic_inc(&qp->usecnt); 2307c3bccbfbSOr Gerlitz return ret; 23081da177e4SLinus Torvalds } 23091da177e4SLinus Torvalds EXPORT_SYMBOL(ib_attach_mcast); 23101da177e4SLinus Torvalds 23111da177e4SLinus Torvalds int ib_detach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid) 23121da177e4SLinus Torvalds { 2313c3bccbfbSOr Gerlitz int ret; 2314c3bccbfbSOr Gerlitz 23153023a1e9SKamal Heib if (!qp->device->ops.detach_mcast) 231687915bf8SLeon Romanovsky return -EOPNOTSUPP; 2317be1d325aSNoa Osherovich 2318be1d325aSNoa Osherovich if (!rdma_is_multicast_addr((struct in6_addr *)gid->raw) || 2319be1d325aSNoa Osherovich qp->qp_type != IB_QPT_UD || !is_valid_mcast_lid(qp, lid)) 23200c33aeedSJack Morgenstein return -EINVAL; 23210c33aeedSJack Morgenstein 23223023a1e9SKamal Heib ret = qp->device->ops.detach_mcast(qp, gid, lid); 2323c3bccbfbSOr Gerlitz if (!ret) 2324c3bccbfbSOr Gerlitz atomic_dec(&qp->usecnt); 2325c3bccbfbSOr Gerlitz return ret; 23261da177e4SLinus Torvalds } 23271da177e4SLinus Torvalds EXPORT_SYMBOL(ib_detach_mcast); 232859991f94SSean Hefty 2329b73efcb2SMaor Gottlieb /** 2330b73efcb2SMaor Gottlieb * ib_alloc_xrcd_user - Allocates an XRC domain. 2331b73efcb2SMaor Gottlieb * @device: The device on which to allocate the XRC domain. 2332b73efcb2SMaor Gottlieb * @inode: inode to connect XRCD 2333b73efcb2SMaor Gottlieb * @udata: Valid user data or NULL for kernel object 2334b73efcb2SMaor Gottlieb */ 2335b73efcb2SMaor Gottlieb struct ib_xrcd *ib_alloc_xrcd_user(struct ib_device *device, 2336b73efcb2SMaor Gottlieb struct inode *inode, struct ib_udata *udata) 233759991f94SSean Hefty { 233859991f94SSean Hefty struct ib_xrcd *xrcd; 233928ad5f65SLeon Romanovsky int ret; 234059991f94SSean Hefty 23413023a1e9SKamal Heib if (!device->ops.alloc_xrcd) 234287915bf8SLeon Romanovsky return ERR_PTR(-EOPNOTSUPP); 234359991f94SSean Hefty 234428ad5f65SLeon Romanovsky xrcd = rdma_zalloc_drv_obj(device, ib_xrcd); 234528ad5f65SLeon Romanovsky if (!xrcd) 234628ad5f65SLeon Romanovsky return ERR_PTR(-ENOMEM); 234728ad5f65SLeon Romanovsky 234859991f94SSean Hefty xrcd->device = device; 2349b73efcb2SMaor Gottlieb xrcd->inode = inode; 235059991f94SSean Hefty atomic_set(&xrcd->usecnt, 0); 23516f3ca6f4SMaor Gottlieb init_rwsem(&xrcd->tgt_qps_rwsem); 23526f3ca6f4SMaor Gottlieb xa_init(&xrcd->tgt_qps); 235359991f94SSean Hefty 235428ad5f65SLeon Romanovsky ret = device->ops.alloc_xrcd(xrcd, udata); 235528ad5f65SLeon Romanovsky if (ret) 235628ad5f65SLeon Romanovsky goto err; 235759991f94SSean Hefty return xrcd; 235828ad5f65SLeon Romanovsky err: 235928ad5f65SLeon Romanovsky kfree(xrcd); 236028ad5f65SLeon Romanovsky return ERR_PTR(ret); 236159991f94SSean Hefty } 2362b73efcb2SMaor Gottlieb EXPORT_SYMBOL(ib_alloc_xrcd_user); 236359991f94SSean Hefty 2364b73efcb2SMaor Gottlieb /** 2365b73efcb2SMaor Gottlieb * ib_dealloc_xrcd_user - Deallocates an XRC domain. 2366b73efcb2SMaor Gottlieb * @xrcd: The XRC domain to deallocate. 2367b73efcb2SMaor Gottlieb * @udata: Valid user data or NULL for kernel object 2368b73efcb2SMaor Gottlieb */ 2369b73efcb2SMaor Gottlieb int ib_dealloc_xrcd_user(struct ib_xrcd *xrcd, struct ib_udata *udata) 237059991f94SSean Hefty { 2371d0c45c85SLeon Romanovsky int ret; 2372d0c45c85SLeon Romanovsky 237359991f94SSean Hefty if (atomic_read(&xrcd->usecnt)) 237459991f94SSean Hefty return -EBUSY; 237559991f94SSean Hefty 23766f3ca6f4SMaor Gottlieb WARN_ON(!xa_empty(&xrcd->tgt_qps)); 2377d0c45c85SLeon Romanovsky ret = xrcd->device->ops.dealloc_xrcd(xrcd, udata); 2378d0c45c85SLeon Romanovsky if (ret) 2379d0c45c85SLeon Romanovsky return ret; 238028ad5f65SLeon Romanovsky kfree(xrcd); 2381d0c45c85SLeon Romanovsky return ret; 238259991f94SSean Hefty } 2383b73efcb2SMaor Gottlieb EXPORT_SYMBOL(ib_dealloc_xrcd_user); 2384319a441dSHadar Hen Zion 23855fd251c8SYishai Hadas /** 23865fd251c8SYishai Hadas * ib_create_wq - Creates a WQ associated with the specified protection 23875fd251c8SYishai Hadas * domain. 23885fd251c8SYishai Hadas * @pd: The protection domain associated with the WQ. 23891f58621eSRandy Dunlap * @wq_attr: A list of initial attributes required to create the 23905fd251c8SYishai Hadas * WQ. If WQ creation succeeds, then the attributes are updated to 23915fd251c8SYishai Hadas * the actual capabilities of the created WQ. 23925fd251c8SYishai Hadas * 23931f58621eSRandy Dunlap * wq_attr->max_wr and wq_attr->max_sge determine 23945fd251c8SYishai Hadas * the requested size of the WQ, and set to the actual values allocated 23955fd251c8SYishai Hadas * on return. 23965fd251c8SYishai Hadas * If ib_create_wq() succeeds, then max_wr and max_sge will always be 23975fd251c8SYishai Hadas * at least as large as the requested values. 23985fd251c8SYishai Hadas */ 23995fd251c8SYishai Hadas struct ib_wq *ib_create_wq(struct ib_pd *pd, 24005fd251c8SYishai Hadas struct ib_wq_init_attr *wq_attr) 24015fd251c8SYishai Hadas { 24025fd251c8SYishai Hadas struct ib_wq *wq; 24035fd251c8SYishai Hadas 24043023a1e9SKamal Heib if (!pd->device->ops.create_wq) 240587915bf8SLeon Romanovsky return ERR_PTR(-EOPNOTSUPP); 24065fd251c8SYishai Hadas 24073023a1e9SKamal Heib wq = pd->device->ops.create_wq(pd, wq_attr, NULL); 24085fd251c8SYishai Hadas if (!IS_ERR(wq)) { 24095fd251c8SYishai Hadas wq->event_handler = wq_attr->event_handler; 24105fd251c8SYishai Hadas wq->wq_context = wq_attr->wq_context; 24115fd251c8SYishai Hadas wq->wq_type = wq_attr->wq_type; 24125fd251c8SYishai Hadas wq->cq = wq_attr->cq; 24135fd251c8SYishai Hadas wq->device = pd->device; 24145fd251c8SYishai Hadas wq->pd = pd; 24155fd251c8SYishai Hadas wq->uobject = NULL; 24165fd251c8SYishai Hadas atomic_inc(&pd->usecnt); 24175fd251c8SYishai Hadas atomic_inc(&wq_attr->cq->usecnt); 24185fd251c8SYishai Hadas atomic_set(&wq->usecnt, 0); 24195fd251c8SYishai Hadas } 24205fd251c8SYishai Hadas return wq; 24215fd251c8SYishai Hadas } 24225fd251c8SYishai Hadas EXPORT_SYMBOL(ib_create_wq); 24235fd251c8SYishai Hadas 24245fd251c8SYishai Hadas /** 2425add53535SLeon Romanovsky * ib_destroy_wq_user - Destroys the specified user WQ. 24265fd251c8SYishai Hadas * @wq: The WQ to destroy. 2427c4367a26SShamir Rabinovitch * @udata: Valid user data 24285fd251c8SYishai Hadas */ 2429add53535SLeon Romanovsky int ib_destroy_wq_user(struct ib_wq *wq, struct ib_udata *udata) 24305fd251c8SYishai Hadas { 24315fd251c8SYishai Hadas struct ib_cq *cq = wq->cq; 24325fd251c8SYishai Hadas struct ib_pd *pd = wq->pd; 2433add53535SLeon Romanovsky int ret; 24345fd251c8SYishai Hadas 24355fd251c8SYishai Hadas if (atomic_read(&wq->usecnt)) 24365fd251c8SYishai Hadas return -EBUSY; 24375fd251c8SYishai Hadas 2438add53535SLeon Romanovsky ret = wq->device->ops.destroy_wq(wq, udata); 2439add53535SLeon Romanovsky if (ret) 2440add53535SLeon Romanovsky return ret; 2441add53535SLeon Romanovsky 24425fd251c8SYishai Hadas atomic_dec(&pd->usecnt); 24435fd251c8SYishai Hadas atomic_dec(&cq->usecnt); 2444add53535SLeon Romanovsky return ret; 24455fd251c8SYishai Hadas } 2446add53535SLeon Romanovsky EXPORT_SYMBOL(ib_destroy_wq_user); 24475fd251c8SYishai Hadas 24481b01d335SSagi Grimberg int ib_check_mr_status(struct ib_mr *mr, u32 check_mask, 24491b01d335SSagi Grimberg struct ib_mr_status *mr_status) 24501b01d335SSagi Grimberg { 24513023a1e9SKamal Heib if (!mr->device->ops.check_mr_status) 24523023a1e9SKamal Heib return -EOPNOTSUPP; 24533023a1e9SKamal Heib 24543023a1e9SKamal Heib return mr->device->ops.check_mr_status(mr, check_mask, mr_status); 24551b01d335SSagi Grimberg } 24561b01d335SSagi Grimberg EXPORT_SYMBOL(ib_check_mr_status); 24574c67e2bfSSagi Grimberg 24581fb7f897SMark Bloch int ib_set_vf_link_state(struct ib_device *device, int vf, u32 port, 245950174a7fSEli Cohen int state) 246050174a7fSEli Cohen { 24613023a1e9SKamal Heib if (!device->ops.set_vf_link_state) 246287915bf8SLeon Romanovsky return -EOPNOTSUPP; 246350174a7fSEli Cohen 24643023a1e9SKamal Heib return device->ops.set_vf_link_state(device, vf, port, state); 246550174a7fSEli Cohen } 246650174a7fSEli Cohen EXPORT_SYMBOL(ib_set_vf_link_state); 246750174a7fSEli Cohen 24681fb7f897SMark Bloch int ib_get_vf_config(struct ib_device *device, int vf, u32 port, 246950174a7fSEli Cohen struct ifla_vf_info *info) 247050174a7fSEli Cohen { 24713023a1e9SKamal Heib if (!device->ops.get_vf_config) 247287915bf8SLeon Romanovsky return -EOPNOTSUPP; 247350174a7fSEli Cohen 24743023a1e9SKamal Heib return device->ops.get_vf_config(device, vf, port, info); 247550174a7fSEli Cohen } 247650174a7fSEli Cohen EXPORT_SYMBOL(ib_get_vf_config); 247750174a7fSEli Cohen 24781fb7f897SMark Bloch int ib_get_vf_stats(struct ib_device *device, int vf, u32 port, 247950174a7fSEli Cohen struct ifla_vf_stats *stats) 248050174a7fSEli Cohen { 24813023a1e9SKamal Heib if (!device->ops.get_vf_stats) 248287915bf8SLeon Romanovsky return -EOPNOTSUPP; 248350174a7fSEli Cohen 24843023a1e9SKamal Heib return device->ops.get_vf_stats(device, vf, port, stats); 248550174a7fSEli Cohen } 248650174a7fSEli Cohen EXPORT_SYMBOL(ib_get_vf_stats); 248750174a7fSEli Cohen 24881fb7f897SMark Bloch int ib_set_vf_guid(struct ib_device *device, int vf, u32 port, u64 guid, 248950174a7fSEli Cohen int type) 249050174a7fSEli Cohen { 24913023a1e9SKamal Heib if (!device->ops.set_vf_guid) 249287915bf8SLeon Romanovsky return -EOPNOTSUPP; 249350174a7fSEli Cohen 24943023a1e9SKamal Heib return device->ops.set_vf_guid(device, vf, port, guid, type); 249550174a7fSEli Cohen } 249650174a7fSEli Cohen EXPORT_SYMBOL(ib_set_vf_guid); 249750174a7fSEli Cohen 24981fb7f897SMark Bloch int ib_get_vf_guid(struct ib_device *device, int vf, u32 port, 2499bfcb3c5dSDanit Goldberg struct ifla_vf_guid *node_guid, 2500bfcb3c5dSDanit Goldberg struct ifla_vf_guid *port_guid) 2501bfcb3c5dSDanit Goldberg { 2502bfcb3c5dSDanit Goldberg if (!device->ops.get_vf_guid) 2503bfcb3c5dSDanit Goldberg return -EOPNOTSUPP; 2504bfcb3c5dSDanit Goldberg 2505bfcb3c5dSDanit Goldberg return device->ops.get_vf_guid(device, vf, port, node_guid, port_guid); 2506bfcb3c5dSDanit Goldberg } 2507bfcb3c5dSDanit Goldberg EXPORT_SYMBOL(ib_get_vf_guid); 25084c67e2bfSSagi Grimberg /** 25092cdfcdd8SMax Gurtovoy * ib_map_mr_sg_pi() - Map the dma mapped SG lists for PI (protection 25102cdfcdd8SMax Gurtovoy * information) and set an appropriate memory region for registration. 25112cdfcdd8SMax Gurtovoy * @mr: memory region 25122cdfcdd8SMax Gurtovoy * @data_sg: dma mapped scatterlist for data 25132cdfcdd8SMax Gurtovoy * @data_sg_nents: number of entries in data_sg 25142cdfcdd8SMax Gurtovoy * @data_sg_offset: offset in bytes into data_sg 25152cdfcdd8SMax Gurtovoy * @meta_sg: dma mapped scatterlist for metadata 25162cdfcdd8SMax Gurtovoy * @meta_sg_nents: number of entries in meta_sg 25172cdfcdd8SMax Gurtovoy * @meta_sg_offset: offset in bytes into meta_sg 25182cdfcdd8SMax Gurtovoy * @page_size: page vector desired page size 25192cdfcdd8SMax Gurtovoy * 25202cdfcdd8SMax Gurtovoy * Constraints: 25212cdfcdd8SMax Gurtovoy * - The MR must be allocated with type IB_MR_TYPE_INTEGRITY. 25222cdfcdd8SMax Gurtovoy * 25232cdfcdd8SMax Gurtovoy * Return: 0 on success. 25242cdfcdd8SMax Gurtovoy * 25252cdfcdd8SMax Gurtovoy * After this completes successfully, the memory region 25262cdfcdd8SMax Gurtovoy * is ready for registration. 25272cdfcdd8SMax Gurtovoy */ 25282cdfcdd8SMax Gurtovoy int ib_map_mr_sg_pi(struct ib_mr *mr, struct scatterlist *data_sg, 25292cdfcdd8SMax Gurtovoy int data_sg_nents, unsigned int *data_sg_offset, 25302cdfcdd8SMax Gurtovoy struct scatterlist *meta_sg, int meta_sg_nents, 25312cdfcdd8SMax Gurtovoy unsigned int *meta_sg_offset, unsigned int page_size) 25322cdfcdd8SMax Gurtovoy { 25332cdfcdd8SMax Gurtovoy if (unlikely(!mr->device->ops.map_mr_sg_pi || 25342cdfcdd8SMax Gurtovoy WARN_ON_ONCE(mr->type != IB_MR_TYPE_INTEGRITY))) 25352cdfcdd8SMax Gurtovoy return -EOPNOTSUPP; 25362cdfcdd8SMax Gurtovoy 25372cdfcdd8SMax Gurtovoy mr->page_size = page_size; 25382cdfcdd8SMax Gurtovoy 25392cdfcdd8SMax Gurtovoy return mr->device->ops.map_mr_sg_pi(mr, data_sg, data_sg_nents, 25402cdfcdd8SMax Gurtovoy data_sg_offset, meta_sg, 25412cdfcdd8SMax Gurtovoy meta_sg_nents, meta_sg_offset); 25422cdfcdd8SMax Gurtovoy } 25432cdfcdd8SMax Gurtovoy EXPORT_SYMBOL(ib_map_mr_sg_pi); 25442cdfcdd8SMax Gurtovoy 25452cdfcdd8SMax Gurtovoy /** 25464c67e2bfSSagi Grimberg * ib_map_mr_sg() - Map the largest prefix of a dma mapped SG list 25474c67e2bfSSagi Grimberg * and set it the memory region. 25484c67e2bfSSagi Grimberg * @mr: memory region 25494c67e2bfSSagi Grimberg * @sg: dma mapped scatterlist 25504c67e2bfSSagi Grimberg * @sg_nents: number of entries in sg 2551ff2ba993SChristoph Hellwig * @sg_offset: offset in bytes into sg 25524c67e2bfSSagi Grimberg * @page_size: page vector desired page size 25534c67e2bfSSagi Grimberg * 25544c67e2bfSSagi Grimberg * Constraints: 2555255e636dSMauro Carvalho Chehab * 25564c67e2bfSSagi Grimberg * - The first sg element is allowed to have an offset. 255752746129SBart Van Assche * - Each sg element must either be aligned to page_size or virtually 255852746129SBart Van Assche * contiguous to the previous element. In case an sg element has a 255952746129SBart Van Assche * non-contiguous offset, the mapping prefix will not include it. 25604c67e2bfSSagi Grimberg * - The last sg element is allowed to have length less than page_size. 25614c67e2bfSSagi Grimberg * - If sg_nents total byte length exceeds the mr max_num_sge * page_size 25624c67e2bfSSagi Grimberg * then only max_num_sg entries will be mapped. 256352746129SBart Van Assche * - If the MR was allocated with type IB_MR_TYPE_SG_GAPS, none of these 2564f5aa9159SSagi Grimberg * constraints holds and the page_size argument is ignored. 25654c67e2bfSSagi Grimberg * 25664c67e2bfSSagi Grimberg * Returns the number of sg elements that were mapped to the memory region. 25674c67e2bfSSagi Grimberg * 25684c67e2bfSSagi Grimberg * After this completes successfully, the memory region 25694c67e2bfSSagi Grimberg * is ready for registration. 25704c67e2bfSSagi Grimberg */ 2571ff2ba993SChristoph Hellwig int ib_map_mr_sg(struct ib_mr *mr, struct scatterlist *sg, int sg_nents, 25729aa8b321SBart Van Assche unsigned int *sg_offset, unsigned int page_size) 25734c67e2bfSSagi Grimberg { 25743023a1e9SKamal Heib if (unlikely(!mr->device->ops.map_mr_sg)) 257587915bf8SLeon Romanovsky return -EOPNOTSUPP; 25764c67e2bfSSagi Grimberg 25774c67e2bfSSagi Grimberg mr->page_size = page_size; 25784c67e2bfSSagi Grimberg 25793023a1e9SKamal Heib return mr->device->ops.map_mr_sg(mr, sg, sg_nents, sg_offset); 25804c67e2bfSSagi Grimberg } 25814c67e2bfSSagi Grimberg EXPORT_SYMBOL(ib_map_mr_sg); 25824c67e2bfSSagi Grimberg 25834c67e2bfSSagi Grimberg /** 25844c67e2bfSSagi Grimberg * ib_sg_to_pages() - Convert the largest prefix of a sg list 25854c67e2bfSSagi Grimberg * to a page vector 25864c67e2bfSSagi Grimberg * @mr: memory region 25874c67e2bfSSagi Grimberg * @sgl: dma mapped scatterlist 25884c67e2bfSSagi Grimberg * @sg_nents: number of entries in sg 2589255e636dSMauro Carvalho Chehab * @sg_offset_p: ==== ======================================================= 2590255e636dSMauro Carvalho Chehab * IN start offset in bytes into sg 2591255e636dSMauro Carvalho Chehab * OUT offset in bytes for element n of the sg of the first 25929aa8b321SBart Van Assche * byte that has not been processed where n is the return 25939aa8b321SBart Van Assche * value of this function. 2594255e636dSMauro Carvalho Chehab * ==== ======================================================= 25954c67e2bfSSagi Grimberg * @set_page: driver page assignment function pointer 25964c67e2bfSSagi Grimberg * 25978f5ba10eSBart Van Assche * Core service helper for drivers to convert the largest 25984c67e2bfSSagi Grimberg * prefix of given sg list to a page vector. The sg list 25994c67e2bfSSagi Grimberg * prefix converted is the prefix that meet the requirements 26004c67e2bfSSagi Grimberg * of ib_map_mr_sg. 26014c67e2bfSSagi Grimberg * 26024c67e2bfSSagi Grimberg * Returns the number of sg elements that were assigned to 26034c67e2bfSSagi Grimberg * a page vector. 26044c67e2bfSSagi Grimberg */ 2605ff2ba993SChristoph Hellwig int ib_sg_to_pages(struct ib_mr *mr, struct scatterlist *sgl, int sg_nents, 26069aa8b321SBart Van Assche unsigned int *sg_offset_p, int (*set_page)(struct ib_mr *, u64)) 26074c67e2bfSSagi Grimberg { 26084c67e2bfSSagi Grimberg struct scatterlist *sg; 2609b6aeb980SBart Van Assche u64 last_end_dma_addr = 0; 26109aa8b321SBart Van Assche unsigned int sg_offset = sg_offset_p ? *sg_offset_p : 0; 26114c67e2bfSSagi Grimberg unsigned int last_page_off = 0; 26124c67e2bfSSagi Grimberg u64 page_mask = ~((u64)mr->page_size - 1); 26138f5ba10eSBart Van Assche int i, ret; 26144c67e2bfSSagi Grimberg 26159aa8b321SBart Van Assche if (unlikely(sg_nents <= 0 || sg_offset > sg_dma_len(&sgl[0]))) 26169aa8b321SBart Van Assche return -EINVAL; 26179aa8b321SBart Van Assche 2618ff2ba993SChristoph Hellwig mr->iova = sg_dma_address(&sgl[0]) + sg_offset; 26194c67e2bfSSagi Grimberg mr->length = 0; 26204c67e2bfSSagi Grimberg 26214c67e2bfSSagi Grimberg for_each_sg(sgl, sg, sg_nents, i) { 2622ff2ba993SChristoph Hellwig u64 dma_addr = sg_dma_address(sg) + sg_offset; 26239aa8b321SBart Van Assche u64 prev_addr = dma_addr; 2624ff2ba993SChristoph Hellwig unsigned int dma_len = sg_dma_len(sg) - sg_offset; 26254c67e2bfSSagi Grimberg u64 end_dma_addr = dma_addr + dma_len; 26264c67e2bfSSagi Grimberg u64 page_addr = dma_addr & page_mask; 26274c67e2bfSSagi Grimberg 26288f5ba10eSBart Van Assche /* 26298f5ba10eSBart Van Assche * For the second and later elements, check whether either the 26308f5ba10eSBart Van Assche * end of element i-1 or the start of element i is not aligned 26318f5ba10eSBart Van Assche * on a page boundary. 26328f5ba10eSBart Van Assche */ 26338f5ba10eSBart Van Assche if (i && (last_page_off != 0 || page_addr != dma_addr)) { 26348f5ba10eSBart Van Assche /* Stop mapping if there is a gap. */ 26358f5ba10eSBart Van Assche if (last_end_dma_addr != dma_addr) 26368f5ba10eSBart Van Assche break; 26374c67e2bfSSagi Grimberg 26388f5ba10eSBart Van Assche /* 26398f5ba10eSBart Van Assche * Coalesce this element with the last. If it is small 26408f5ba10eSBart Van Assche * enough just update mr->length. Otherwise start 26418f5ba10eSBart Van Assche * mapping from the next page. 26428f5ba10eSBart Van Assche */ 26438f5ba10eSBart Van Assche goto next_page; 26444c67e2bfSSagi Grimberg } 26454c67e2bfSSagi Grimberg 26464c67e2bfSSagi Grimberg do { 26478f5ba10eSBart Van Assche ret = set_page(mr, page_addr); 26489aa8b321SBart Van Assche if (unlikely(ret < 0)) { 26499aa8b321SBart Van Assche sg_offset = prev_addr - sg_dma_address(sg); 26509aa8b321SBart Van Assche mr->length += prev_addr - dma_addr; 26519aa8b321SBart Van Assche if (sg_offset_p) 26529aa8b321SBart Van Assche *sg_offset_p = sg_offset; 26539aa8b321SBart Van Assche return i || sg_offset ? i : ret; 26549aa8b321SBart Van Assche } 26559aa8b321SBart Van Assche prev_addr = page_addr; 26568f5ba10eSBart Van Assche next_page: 26574c67e2bfSSagi Grimberg page_addr += mr->page_size; 26584c67e2bfSSagi Grimberg } while (page_addr < end_dma_addr); 26594c67e2bfSSagi Grimberg 26604c67e2bfSSagi Grimberg mr->length += dma_len; 26614c67e2bfSSagi Grimberg last_end_dma_addr = end_dma_addr; 26624c67e2bfSSagi Grimberg last_page_off = end_dma_addr & ~page_mask; 2663ff2ba993SChristoph Hellwig 2664ff2ba993SChristoph Hellwig sg_offset = 0; 26654c67e2bfSSagi Grimberg } 26664c67e2bfSSagi Grimberg 26679aa8b321SBart Van Assche if (sg_offset_p) 26689aa8b321SBart Van Assche *sg_offset_p = 0; 26694c67e2bfSSagi Grimberg return i; 26704c67e2bfSSagi Grimberg } 26714c67e2bfSSagi Grimberg EXPORT_SYMBOL(ib_sg_to_pages); 2672765d6774SSteve Wise 2673765d6774SSteve Wise struct ib_drain_cqe { 2674765d6774SSteve Wise struct ib_cqe cqe; 2675765d6774SSteve Wise struct completion done; 2676765d6774SSteve Wise }; 2677765d6774SSteve Wise 2678765d6774SSteve Wise static void ib_drain_qp_done(struct ib_cq *cq, struct ib_wc *wc) 2679765d6774SSteve Wise { 2680765d6774SSteve Wise struct ib_drain_cqe *cqe = container_of(wc->wr_cqe, struct ib_drain_cqe, 2681765d6774SSteve Wise cqe); 2682765d6774SSteve Wise 2683765d6774SSteve Wise complete(&cqe->done); 2684765d6774SSteve Wise } 2685765d6774SSteve Wise 2686765d6774SSteve Wise /* 2687765d6774SSteve Wise * Post a WR and block until its completion is reaped for the SQ. 2688765d6774SSteve Wise */ 2689765d6774SSteve Wise static void __ib_drain_sq(struct ib_qp *qp) 2690765d6774SSteve Wise { 2691f039f44fSBart Van Assche struct ib_cq *cq = qp->send_cq; 2692765d6774SSteve Wise struct ib_qp_attr attr = { .qp_state = IB_QPS_ERR }; 2693765d6774SSteve Wise struct ib_drain_cqe sdrain; 2694a1ae7d03SBart Van Assche struct ib_rdma_wr swr = { 2695a1ae7d03SBart Van Assche .wr = { 26966ee68773SAndrew Morton .next = NULL, 26976ee68773SAndrew Morton { .wr_cqe = &sdrain.cqe, }, 2698a1ae7d03SBart Van Assche .opcode = IB_WR_RDMA_WRITE, 2699a1ae7d03SBart Van Assche }, 2700a1ae7d03SBart Van Assche }; 2701765d6774SSteve Wise int ret; 2702765d6774SSteve Wise 2703765d6774SSteve Wise ret = ib_modify_qp(qp, &attr, IB_QP_STATE); 2704765d6774SSteve Wise if (ret) { 2705765d6774SSteve Wise WARN_ONCE(ret, "failed to drain send queue: %d\n", ret); 2706765d6774SSteve Wise return; 2707765d6774SSteve Wise } 2708765d6774SSteve Wise 2709aaebd377SMax Gurtovoy sdrain.cqe.done = ib_drain_qp_done; 2710aaebd377SMax Gurtovoy init_completion(&sdrain.done); 2711aaebd377SMax Gurtovoy 27121fec77bfSBart Van Assche ret = ib_post_send(qp, &swr.wr, NULL); 2713765d6774SSteve Wise if (ret) { 2714765d6774SSteve Wise WARN_ONCE(ret, "failed to drain send queue: %d\n", ret); 2715765d6774SSteve Wise return; 2716765d6774SSteve Wise } 2717765d6774SSteve Wise 2718f039f44fSBart Van Assche if (cq->poll_ctx == IB_POLL_DIRECT) 2719f039f44fSBart Van Assche while (wait_for_completion_timeout(&sdrain.done, HZ / 10) <= 0) 2720f039f44fSBart Van Assche ib_process_cq_direct(cq, -1); 2721f039f44fSBart Van Assche else 2722765d6774SSteve Wise wait_for_completion(&sdrain.done); 2723765d6774SSteve Wise } 2724765d6774SSteve Wise 2725765d6774SSteve Wise /* 2726765d6774SSteve Wise * Post a WR and block until its completion is reaped for the RQ. 2727765d6774SSteve Wise */ 2728765d6774SSteve Wise static void __ib_drain_rq(struct ib_qp *qp) 2729765d6774SSteve Wise { 2730f039f44fSBart Van Assche struct ib_cq *cq = qp->recv_cq; 2731765d6774SSteve Wise struct ib_qp_attr attr = { .qp_state = IB_QPS_ERR }; 2732765d6774SSteve Wise struct ib_drain_cqe rdrain; 27331fec77bfSBart Van Assche struct ib_recv_wr rwr = {}; 2734765d6774SSteve Wise int ret; 2735765d6774SSteve Wise 2736765d6774SSteve Wise ret = ib_modify_qp(qp, &attr, IB_QP_STATE); 2737765d6774SSteve Wise if (ret) { 2738765d6774SSteve Wise WARN_ONCE(ret, "failed to drain recv queue: %d\n", ret); 2739765d6774SSteve Wise return; 2740765d6774SSteve Wise } 2741765d6774SSteve Wise 2742aaebd377SMax Gurtovoy rwr.wr_cqe = &rdrain.cqe; 2743aaebd377SMax Gurtovoy rdrain.cqe.done = ib_drain_qp_done; 2744aaebd377SMax Gurtovoy init_completion(&rdrain.done); 2745aaebd377SMax Gurtovoy 27461fec77bfSBart Van Assche ret = ib_post_recv(qp, &rwr, NULL); 2747765d6774SSteve Wise if (ret) { 2748765d6774SSteve Wise WARN_ONCE(ret, "failed to drain recv queue: %d\n", ret); 2749765d6774SSteve Wise return; 2750765d6774SSteve Wise } 2751765d6774SSteve Wise 2752f039f44fSBart Van Assche if (cq->poll_ctx == IB_POLL_DIRECT) 2753f039f44fSBart Van Assche while (wait_for_completion_timeout(&rdrain.done, HZ / 10) <= 0) 2754f039f44fSBart Van Assche ib_process_cq_direct(cq, -1); 2755f039f44fSBart Van Assche else 2756765d6774SSteve Wise wait_for_completion(&rdrain.done); 2757765d6774SSteve Wise } 2758765d6774SSteve Wise 2759765d6774SSteve Wise /** 2760765d6774SSteve Wise * ib_drain_sq() - Block until all SQ CQEs have been consumed by the 2761765d6774SSteve Wise * application. 2762765d6774SSteve Wise * @qp: queue pair to drain 2763765d6774SSteve Wise * 2764765d6774SSteve Wise * If the device has a provider-specific drain function, then 2765765d6774SSteve Wise * call that. Otherwise call the generic drain function 2766765d6774SSteve Wise * __ib_drain_sq(). 2767765d6774SSteve Wise * 2768765d6774SSteve Wise * The caller must: 2769765d6774SSteve Wise * 2770765d6774SSteve Wise * ensure there is room in the CQ and SQ for the drain work request and 2771765d6774SSteve Wise * completion. 2772765d6774SSteve Wise * 2773f039f44fSBart Van Assche * allocate the CQ using ib_alloc_cq(). 2774765d6774SSteve Wise * 2775765d6774SSteve Wise * ensure that there are no other contexts that are posting WRs concurrently. 2776765d6774SSteve Wise * Otherwise the drain is not guaranteed. 2777765d6774SSteve Wise */ 2778765d6774SSteve Wise void ib_drain_sq(struct ib_qp *qp) 2779765d6774SSteve Wise { 27803023a1e9SKamal Heib if (qp->device->ops.drain_sq) 27813023a1e9SKamal Heib qp->device->ops.drain_sq(qp); 2782765d6774SSteve Wise else 2783765d6774SSteve Wise __ib_drain_sq(qp); 27843e5901cbSChuck Lever trace_cq_drain_complete(qp->send_cq); 2785765d6774SSteve Wise } 2786765d6774SSteve Wise EXPORT_SYMBOL(ib_drain_sq); 2787765d6774SSteve Wise 2788765d6774SSteve Wise /** 2789765d6774SSteve Wise * ib_drain_rq() - Block until all RQ CQEs have been consumed by the 2790765d6774SSteve Wise * application. 2791765d6774SSteve Wise * @qp: queue pair to drain 2792765d6774SSteve Wise * 2793765d6774SSteve Wise * If the device has a provider-specific drain function, then 2794765d6774SSteve Wise * call that. Otherwise call the generic drain function 2795765d6774SSteve Wise * __ib_drain_rq(). 2796765d6774SSteve Wise * 2797765d6774SSteve Wise * The caller must: 2798765d6774SSteve Wise * 2799765d6774SSteve Wise * ensure there is room in the CQ and RQ for the drain work request and 2800765d6774SSteve Wise * completion. 2801765d6774SSteve Wise * 2802f039f44fSBart Van Assche * allocate the CQ using ib_alloc_cq(). 2803765d6774SSteve Wise * 2804765d6774SSteve Wise * ensure that there are no other contexts that are posting WRs concurrently. 2805765d6774SSteve Wise * Otherwise the drain is not guaranteed. 2806765d6774SSteve Wise */ 2807765d6774SSteve Wise void ib_drain_rq(struct ib_qp *qp) 2808765d6774SSteve Wise { 28093023a1e9SKamal Heib if (qp->device->ops.drain_rq) 28103023a1e9SKamal Heib qp->device->ops.drain_rq(qp); 2811765d6774SSteve Wise else 2812765d6774SSteve Wise __ib_drain_rq(qp); 28133e5901cbSChuck Lever trace_cq_drain_complete(qp->recv_cq); 2814765d6774SSteve Wise } 2815765d6774SSteve Wise EXPORT_SYMBOL(ib_drain_rq); 2816765d6774SSteve Wise 2817765d6774SSteve Wise /** 2818765d6774SSteve Wise * ib_drain_qp() - Block until all CQEs have been consumed by the 2819765d6774SSteve Wise * application on both the RQ and SQ. 2820765d6774SSteve Wise * @qp: queue pair to drain 2821765d6774SSteve Wise * 2822765d6774SSteve Wise * The caller must: 2823765d6774SSteve Wise * 2824765d6774SSteve Wise * ensure there is room in the CQ(s), SQ, and RQ for drain work requests 2825765d6774SSteve Wise * and completions. 2826765d6774SSteve Wise * 2827f039f44fSBart Van Assche * allocate the CQs using ib_alloc_cq(). 2828765d6774SSteve Wise * 2829765d6774SSteve Wise * ensure that there are no other contexts that are posting WRs concurrently. 2830765d6774SSteve Wise * Otherwise the drain is not guaranteed. 2831765d6774SSteve Wise */ 2832765d6774SSteve Wise void ib_drain_qp(struct ib_qp *qp) 2833765d6774SSteve Wise { 2834765d6774SSteve Wise ib_drain_sq(qp); 283542235f80SSagi Grimberg if (!qp->srq) 2836765d6774SSteve Wise ib_drain_rq(qp); 2837765d6774SSteve Wise } 2838765d6774SSteve Wise EXPORT_SYMBOL(ib_drain_qp); 2839f6a8a19bSDenis Drozdov 28401fb7f897SMark Bloch struct net_device *rdma_alloc_netdev(struct ib_device *device, u32 port_num, 2841f6a8a19bSDenis Drozdov enum rdma_netdev_t type, const char *name, 2842f6a8a19bSDenis Drozdov unsigned char name_assign_type, 2843f6a8a19bSDenis Drozdov void (*setup)(struct net_device *)) 2844f6a8a19bSDenis Drozdov { 2845f6a8a19bSDenis Drozdov struct rdma_netdev_alloc_params params; 2846f6a8a19bSDenis Drozdov struct net_device *netdev; 2847f6a8a19bSDenis Drozdov int rc; 2848f6a8a19bSDenis Drozdov 28493023a1e9SKamal Heib if (!device->ops.rdma_netdev_get_params) 2850f6a8a19bSDenis Drozdov return ERR_PTR(-EOPNOTSUPP); 2851f6a8a19bSDenis Drozdov 28523023a1e9SKamal Heib rc = device->ops.rdma_netdev_get_params(device, port_num, type, 28533023a1e9SKamal Heib ¶ms); 2854f6a8a19bSDenis Drozdov if (rc) 2855f6a8a19bSDenis Drozdov return ERR_PTR(rc); 2856f6a8a19bSDenis Drozdov 2857f6a8a19bSDenis Drozdov netdev = alloc_netdev_mqs(params.sizeof_priv, name, name_assign_type, 2858f6a8a19bSDenis Drozdov setup, params.txqs, params.rxqs); 2859f6a8a19bSDenis Drozdov if (!netdev) 2860f6a8a19bSDenis Drozdov return ERR_PTR(-ENOMEM); 2861f6a8a19bSDenis Drozdov 2862f6a8a19bSDenis Drozdov return netdev; 2863f6a8a19bSDenis Drozdov } 2864f6a8a19bSDenis Drozdov EXPORT_SYMBOL(rdma_alloc_netdev); 28655d6b0cb3SDenis Drozdov 28661fb7f897SMark Bloch int rdma_init_netdev(struct ib_device *device, u32 port_num, 28675d6b0cb3SDenis Drozdov enum rdma_netdev_t type, const char *name, 28685d6b0cb3SDenis Drozdov unsigned char name_assign_type, 28695d6b0cb3SDenis Drozdov void (*setup)(struct net_device *), 28705d6b0cb3SDenis Drozdov struct net_device *netdev) 28715d6b0cb3SDenis Drozdov { 28725d6b0cb3SDenis Drozdov struct rdma_netdev_alloc_params params; 28735d6b0cb3SDenis Drozdov int rc; 28745d6b0cb3SDenis Drozdov 28753023a1e9SKamal Heib if (!device->ops.rdma_netdev_get_params) 28765d6b0cb3SDenis Drozdov return -EOPNOTSUPP; 28775d6b0cb3SDenis Drozdov 28783023a1e9SKamal Heib rc = device->ops.rdma_netdev_get_params(device, port_num, type, 28793023a1e9SKamal Heib ¶ms); 28805d6b0cb3SDenis Drozdov if (rc) 28815d6b0cb3SDenis Drozdov return rc; 28825d6b0cb3SDenis Drozdov 28835d6b0cb3SDenis Drozdov return params.initialize_rdma_netdev(device, port_num, 28845d6b0cb3SDenis Drozdov netdev, params.param); 28855d6b0cb3SDenis Drozdov } 28865d6b0cb3SDenis Drozdov EXPORT_SYMBOL(rdma_init_netdev); 2887a808273aSShiraz Saleem 2888a808273aSShiraz Saleem void __rdma_block_iter_start(struct ib_block_iter *biter, 2889a808273aSShiraz Saleem struct scatterlist *sglist, unsigned int nents, 2890a808273aSShiraz Saleem unsigned long pgsz) 2891a808273aSShiraz Saleem { 2892a808273aSShiraz Saleem memset(biter, 0, sizeof(struct ib_block_iter)); 2893a808273aSShiraz Saleem biter->__sg = sglist; 2894a808273aSShiraz Saleem biter->__sg_nents = nents; 2895a808273aSShiraz Saleem 2896a808273aSShiraz Saleem /* Driver provides best block size to use */ 2897a808273aSShiraz Saleem biter->__pg_bit = __fls(pgsz); 2898a808273aSShiraz Saleem } 2899a808273aSShiraz Saleem EXPORT_SYMBOL(__rdma_block_iter_start); 2900a808273aSShiraz Saleem 2901a808273aSShiraz Saleem bool __rdma_block_iter_next(struct ib_block_iter *biter) 2902a808273aSShiraz Saleem { 2903a808273aSShiraz Saleem unsigned int block_offset; 2904a808273aSShiraz Saleem 2905a808273aSShiraz Saleem if (!biter->__sg_nents || !biter->__sg) 2906a808273aSShiraz Saleem return false; 2907a808273aSShiraz Saleem 2908a808273aSShiraz Saleem biter->__dma_addr = sg_dma_address(biter->__sg) + biter->__sg_advance; 2909a808273aSShiraz Saleem block_offset = biter->__dma_addr & (BIT_ULL(biter->__pg_bit) - 1); 2910a808273aSShiraz Saleem biter->__sg_advance += BIT_ULL(biter->__pg_bit) - block_offset; 2911a808273aSShiraz Saleem 2912a808273aSShiraz Saleem if (biter->__sg_advance >= sg_dma_len(biter->__sg)) { 2913a808273aSShiraz Saleem biter->__sg_advance = 0; 2914a808273aSShiraz Saleem biter->__sg = sg_next(biter->__sg); 2915a808273aSShiraz Saleem biter->__sg_nents--; 2916a808273aSShiraz Saleem } 2917a808273aSShiraz Saleem 2918a808273aSShiraz Saleem return true; 2919a808273aSShiraz Saleem } 2920a808273aSShiraz Saleem EXPORT_SYMBOL(__rdma_block_iter_next); 2921