11da177e4SLinus Torvalds /* 21da177e4SLinus Torvalds * Copyright (c) 2004 Mellanox Technologies Ltd. All rights reserved. 31da177e4SLinus Torvalds * Copyright (c) 2004 Infinicon Corporation. All rights reserved. 41da177e4SLinus Torvalds * Copyright (c) 2004 Intel Corporation. All rights reserved. 51da177e4SLinus Torvalds * Copyright (c) 2004 Topspin Corporation. All rights reserved. 61da177e4SLinus Torvalds * Copyright (c) 2004 Voltaire Corporation. All rights reserved. 72a1d9b7fSRoland Dreier * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved. 833b9b3eeSRoland Dreier * Copyright (c) 2005, 2006 Cisco Systems. All rights reserved. 91da177e4SLinus Torvalds * 101da177e4SLinus Torvalds * This software is available to you under a choice of one of two 111da177e4SLinus Torvalds * licenses. You may choose to be licensed under the terms of the GNU 121da177e4SLinus Torvalds * General Public License (GPL) Version 2, available from the file 131da177e4SLinus Torvalds * COPYING in the main directory of this source tree, or the 141da177e4SLinus Torvalds * OpenIB.org BSD license below: 151da177e4SLinus Torvalds * 161da177e4SLinus Torvalds * Redistribution and use in source and binary forms, with or 171da177e4SLinus Torvalds * without modification, are permitted provided that the following 181da177e4SLinus Torvalds * conditions are met: 191da177e4SLinus Torvalds * 201da177e4SLinus Torvalds * - Redistributions of source code must retain the above 211da177e4SLinus Torvalds * copyright notice, this list of conditions and the following 221da177e4SLinus Torvalds * disclaimer. 231da177e4SLinus Torvalds * 241da177e4SLinus Torvalds * - Redistributions in binary form must reproduce the above 251da177e4SLinus Torvalds * copyright notice, this list of conditions and the following 261da177e4SLinus Torvalds * disclaimer in the documentation and/or other materials 271da177e4SLinus Torvalds * provided with the distribution. 281da177e4SLinus Torvalds * 291da177e4SLinus Torvalds * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 301da177e4SLinus Torvalds * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 311da177e4SLinus Torvalds * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 321da177e4SLinus Torvalds * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 331da177e4SLinus Torvalds * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 341da177e4SLinus Torvalds * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 351da177e4SLinus Torvalds * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 361da177e4SLinus Torvalds * SOFTWARE. 371da177e4SLinus Torvalds */ 381da177e4SLinus Torvalds 391da177e4SLinus Torvalds #include <linux/errno.h> 401da177e4SLinus Torvalds #include <linux/err.h> 41b108d976SPaul Gortmaker #include <linux/export.h> 428c65b4a6STim Schmielau #include <linux/string.h> 430e0ec7e0SSean Hefty #include <linux/slab.h> 44dbf727deSMatan Barak #include <linux/in.h> 45dbf727deSMatan Barak #include <linux/in6.h> 46dbf727deSMatan Barak #include <net/addrconf.h> 47d291f1a6SDaniel Jurgens #include <linux/security.h> 481da177e4SLinus Torvalds 49a4d61e84SRoland Dreier #include <rdma/ib_verbs.h> 50a4d61e84SRoland Dreier #include <rdma/ib_cache.h> 51dd5f03beSMatan Barak #include <rdma/ib_addr.h> 52a060b562SChristoph Hellwig #include <rdma/rw.h> 531da177e4SLinus Torvalds 54ed4c54e5SOr Gerlitz #include "core_priv.h" 551da177e4SLinus Torvalds 56c0348eb0SParav Pandit static int ib_resolve_eth_dmac(struct ib_device *device, 57c0348eb0SParav Pandit struct rdma_ah_attr *ah_attr); 58c0348eb0SParav Pandit 592b1b5b60SSagi Grimberg static const char * const ib_events[] = { 602b1b5b60SSagi Grimberg [IB_EVENT_CQ_ERR] = "CQ error", 612b1b5b60SSagi Grimberg [IB_EVENT_QP_FATAL] = "QP fatal error", 622b1b5b60SSagi Grimberg [IB_EVENT_QP_REQ_ERR] = "QP request error", 632b1b5b60SSagi Grimberg [IB_EVENT_QP_ACCESS_ERR] = "QP access error", 642b1b5b60SSagi Grimberg [IB_EVENT_COMM_EST] = "communication established", 652b1b5b60SSagi Grimberg [IB_EVENT_SQ_DRAINED] = "send queue drained", 662b1b5b60SSagi Grimberg [IB_EVENT_PATH_MIG] = "path migration successful", 672b1b5b60SSagi Grimberg [IB_EVENT_PATH_MIG_ERR] = "path migration error", 682b1b5b60SSagi Grimberg [IB_EVENT_DEVICE_FATAL] = "device fatal error", 692b1b5b60SSagi Grimberg [IB_EVENT_PORT_ACTIVE] = "port active", 702b1b5b60SSagi Grimberg [IB_EVENT_PORT_ERR] = "port error", 712b1b5b60SSagi Grimberg [IB_EVENT_LID_CHANGE] = "LID change", 722b1b5b60SSagi Grimberg [IB_EVENT_PKEY_CHANGE] = "P_key change", 732b1b5b60SSagi Grimberg [IB_EVENT_SM_CHANGE] = "SM change", 742b1b5b60SSagi Grimberg [IB_EVENT_SRQ_ERR] = "SRQ error", 752b1b5b60SSagi Grimberg [IB_EVENT_SRQ_LIMIT_REACHED] = "SRQ limit reached", 762b1b5b60SSagi Grimberg [IB_EVENT_QP_LAST_WQE_REACHED] = "last WQE reached", 772b1b5b60SSagi Grimberg [IB_EVENT_CLIENT_REREGISTER] = "client reregister", 782b1b5b60SSagi Grimberg [IB_EVENT_GID_CHANGE] = "GID changed", 792b1b5b60SSagi Grimberg }; 802b1b5b60SSagi Grimberg 81db7489e0SBart Van Assche const char *__attribute_const__ ib_event_msg(enum ib_event_type event) 822b1b5b60SSagi Grimberg { 832b1b5b60SSagi Grimberg size_t index = event; 842b1b5b60SSagi Grimberg 852b1b5b60SSagi Grimberg return (index < ARRAY_SIZE(ib_events) && ib_events[index]) ? 862b1b5b60SSagi Grimberg ib_events[index] : "unrecognized event"; 872b1b5b60SSagi Grimberg } 882b1b5b60SSagi Grimberg EXPORT_SYMBOL(ib_event_msg); 892b1b5b60SSagi Grimberg 902b1b5b60SSagi Grimberg static const char * const wc_statuses[] = { 912b1b5b60SSagi Grimberg [IB_WC_SUCCESS] = "success", 922b1b5b60SSagi Grimberg [IB_WC_LOC_LEN_ERR] = "local length error", 932b1b5b60SSagi Grimberg [IB_WC_LOC_QP_OP_ERR] = "local QP operation error", 942b1b5b60SSagi Grimberg [IB_WC_LOC_EEC_OP_ERR] = "local EE context operation error", 952b1b5b60SSagi Grimberg [IB_WC_LOC_PROT_ERR] = "local protection error", 962b1b5b60SSagi Grimberg [IB_WC_WR_FLUSH_ERR] = "WR flushed", 972b1b5b60SSagi Grimberg [IB_WC_MW_BIND_ERR] = "memory management operation error", 982b1b5b60SSagi Grimberg [IB_WC_BAD_RESP_ERR] = "bad response error", 992b1b5b60SSagi Grimberg [IB_WC_LOC_ACCESS_ERR] = "local access error", 1002b1b5b60SSagi Grimberg [IB_WC_REM_INV_REQ_ERR] = "invalid request error", 1012b1b5b60SSagi Grimberg [IB_WC_REM_ACCESS_ERR] = "remote access error", 1022b1b5b60SSagi Grimberg [IB_WC_REM_OP_ERR] = "remote operation error", 1032b1b5b60SSagi Grimberg [IB_WC_RETRY_EXC_ERR] = "transport retry counter exceeded", 1042b1b5b60SSagi Grimberg [IB_WC_RNR_RETRY_EXC_ERR] = "RNR retry counter exceeded", 1052b1b5b60SSagi Grimberg [IB_WC_LOC_RDD_VIOL_ERR] = "local RDD violation error", 1062b1b5b60SSagi Grimberg [IB_WC_REM_INV_RD_REQ_ERR] = "remote invalid RD request", 1072b1b5b60SSagi Grimberg [IB_WC_REM_ABORT_ERR] = "operation aborted", 1082b1b5b60SSagi Grimberg [IB_WC_INV_EECN_ERR] = "invalid EE context number", 1092b1b5b60SSagi Grimberg [IB_WC_INV_EEC_STATE_ERR] = "invalid EE context state", 1102b1b5b60SSagi Grimberg [IB_WC_FATAL_ERR] = "fatal error", 1112b1b5b60SSagi Grimberg [IB_WC_RESP_TIMEOUT_ERR] = "response timeout error", 1122b1b5b60SSagi Grimberg [IB_WC_GENERAL_ERR] = "general error", 1132b1b5b60SSagi Grimberg }; 1142b1b5b60SSagi Grimberg 115db7489e0SBart Van Assche const char *__attribute_const__ ib_wc_status_msg(enum ib_wc_status status) 1162b1b5b60SSagi Grimberg { 1172b1b5b60SSagi Grimberg size_t index = status; 1182b1b5b60SSagi Grimberg 1192b1b5b60SSagi Grimberg return (index < ARRAY_SIZE(wc_statuses) && wc_statuses[index]) ? 1202b1b5b60SSagi Grimberg wc_statuses[index] : "unrecognized status"; 1212b1b5b60SSagi Grimberg } 1222b1b5b60SSagi Grimberg EXPORT_SYMBOL(ib_wc_status_msg); 1232b1b5b60SSagi Grimberg 1248385fd84SRoland Dreier __attribute_const__ int ib_rate_to_mult(enum ib_rate rate) 125bf6a9e31SJack Morgenstein { 126bf6a9e31SJack Morgenstein switch (rate) { 127bf6a9e31SJack Morgenstein case IB_RATE_2_5_GBPS: return 1; 128bf6a9e31SJack Morgenstein case IB_RATE_5_GBPS: return 2; 129bf6a9e31SJack Morgenstein case IB_RATE_10_GBPS: return 4; 130bf6a9e31SJack Morgenstein case IB_RATE_20_GBPS: return 8; 131bf6a9e31SJack Morgenstein case IB_RATE_30_GBPS: return 12; 132bf6a9e31SJack Morgenstein case IB_RATE_40_GBPS: return 16; 133bf6a9e31SJack Morgenstein case IB_RATE_60_GBPS: return 24; 134bf6a9e31SJack Morgenstein case IB_RATE_80_GBPS: return 32; 135bf6a9e31SJack Morgenstein case IB_RATE_120_GBPS: return 48; 136e2dda368SHans Westgaard Ry case IB_RATE_14_GBPS: return 6; 137e2dda368SHans Westgaard Ry case IB_RATE_56_GBPS: return 22; 138e2dda368SHans Westgaard Ry case IB_RATE_112_GBPS: return 45; 139e2dda368SHans Westgaard Ry case IB_RATE_168_GBPS: return 67; 140e2dda368SHans Westgaard Ry case IB_RATE_25_GBPS: return 10; 141e2dda368SHans Westgaard Ry case IB_RATE_100_GBPS: return 40; 142e2dda368SHans Westgaard Ry case IB_RATE_200_GBPS: return 80; 143e2dda368SHans Westgaard Ry case IB_RATE_300_GBPS: return 120; 144bf6a9e31SJack Morgenstein default: return -1; 145bf6a9e31SJack Morgenstein } 146bf6a9e31SJack Morgenstein } 147bf6a9e31SJack Morgenstein EXPORT_SYMBOL(ib_rate_to_mult); 148bf6a9e31SJack Morgenstein 1498385fd84SRoland Dreier __attribute_const__ enum ib_rate mult_to_ib_rate(int mult) 150bf6a9e31SJack Morgenstein { 151bf6a9e31SJack Morgenstein switch (mult) { 152bf6a9e31SJack Morgenstein case 1: return IB_RATE_2_5_GBPS; 153bf6a9e31SJack Morgenstein case 2: return IB_RATE_5_GBPS; 154bf6a9e31SJack Morgenstein case 4: return IB_RATE_10_GBPS; 155bf6a9e31SJack Morgenstein case 8: return IB_RATE_20_GBPS; 156bf6a9e31SJack Morgenstein case 12: return IB_RATE_30_GBPS; 157bf6a9e31SJack Morgenstein case 16: return IB_RATE_40_GBPS; 158bf6a9e31SJack Morgenstein case 24: return IB_RATE_60_GBPS; 159bf6a9e31SJack Morgenstein case 32: return IB_RATE_80_GBPS; 160bf6a9e31SJack Morgenstein case 48: return IB_RATE_120_GBPS; 161e2dda368SHans Westgaard Ry case 6: return IB_RATE_14_GBPS; 162e2dda368SHans Westgaard Ry case 22: return IB_RATE_56_GBPS; 163e2dda368SHans Westgaard Ry case 45: return IB_RATE_112_GBPS; 164e2dda368SHans Westgaard Ry case 67: return IB_RATE_168_GBPS; 165e2dda368SHans Westgaard Ry case 10: return IB_RATE_25_GBPS; 166e2dda368SHans Westgaard Ry case 40: return IB_RATE_100_GBPS; 167e2dda368SHans Westgaard Ry case 80: return IB_RATE_200_GBPS; 168e2dda368SHans Westgaard Ry case 120: return IB_RATE_300_GBPS; 169bf6a9e31SJack Morgenstein default: return IB_RATE_PORT_CURRENT; 170bf6a9e31SJack Morgenstein } 171bf6a9e31SJack Morgenstein } 172bf6a9e31SJack Morgenstein EXPORT_SYMBOL(mult_to_ib_rate); 173bf6a9e31SJack Morgenstein 1748385fd84SRoland Dreier __attribute_const__ int ib_rate_to_mbps(enum ib_rate rate) 17571eeba16SMarcel Apfelbaum { 17671eeba16SMarcel Apfelbaum switch (rate) { 17771eeba16SMarcel Apfelbaum case IB_RATE_2_5_GBPS: return 2500; 17871eeba16SMarcel Apfelbaum case IB_RATE_5_GBPS: return 5000; 17971eeba16SMarcel Apfelbaum case IB_RATE_10_GBPS: return 10000; 18071eeba16SMarcel Apfelbaum case IB_RATE_20_GBPS: return 20000; 18171eeba16SMarcel Apfelbaum case IB_RATE_30_GBPS: return 30000; 18271eeba16SMarcel Apfelbaum case IB_RATE_40_GBPS: return 40000; 18371eeba16SMarcel Apfelbaum case IB_RATE_60_GBPS: return 60000; 18471eeba16SMarcel Apfelbaum case IB_RATE_80_GBPS: return 80000; 18571eeba16SMarcel Apfelbaum case IB_RATE_120_GBPS: return 120000; 18671eeba16SMarcel Apfelbaum case IB_RATE_14_GBPS: return 14062; 18771eeba16SMarcel Apfelbaum case IB_RATE_56_GBPS: return 56250; 18871eeba16SMarcel Apfelbaum case IB_RATE_112_GBPS: return 112500; 18971eeba16SMarcel Apfelbaum case IB_RATE_168_GBPS: return 168750; 19071eeba16SMarcel Apfelbaum case IB_RATE_25_GBPS: return 25781; 19171eeba16SMarcel Apfelbaum case IB_RATE_100_GBPS: return 103125; 19271eeba16SMarcel Apfelbaum case IB_RATE_200_GBPS: return 206250; 19371eeba16SMarcel Apfelbaum case IB_RATE_300_GBPS: return 309375; 19471eeba16SMarcel Apfelbaum default: return -1; 19571eeba16SMarcel Apfelbaum } 19671eeba16SMarcel Apfelbaum } 19771eeba16SMarcel Apfelbaum EXPORT_SYMBOL(ib_rate_to_mbps); 19871eeba16SMarcel Apfelbaum 1998385fd84SRoland Dreier __attribute_const__ enum rdma_transport_type 20007ebafbaSTom Tucker rdma_node_get_transport(enum rdma_node_type node_type) 20107ebafbaSTom Tucker { 202cdc596d8SLeon Romanovsky 203cdc596d8SLeon Romanovsky if (node_type == RDMA_NODE_USNIC) 2045db5765eSUpinder Malhi return RDMA_TRANSPORT_USNIC; 205cdc596d8SLeon Romanovsky if (node_type == RDMA_NODE_USNIC_UDP) 206248567f7SUpinder Malhi return RDMA_TRANSPORT_USNIC_UDP; 207cdc596d8SLeon Romanovsky if (node_type == RDMA_NODE_RNIC) 208cdc596d8SLeon Romanovsky return RDMA_TRANSPORT_IWARP; 209cdc596d8SLeon Romanovsky 210cdc596d8SLeon Romanovsky return RDMA_TRANSPORT_IB; 21107ebafbaSTom Tucker } 21207ebafbaSTom Tucker EXPORT_SYMBOL(rdma_node_get_transport); 21307ebafbaSTom Tucker 214a3f5adafSEli Cohen enum rdma_link_layer rdma_port_get_link_layer(struct ib_device *device, u8 port_num) 215a3f5adafSEli Cohen { 21682901e3eSLeon Romanovsky enum rdma_transport_type lt; 217a3f5adafSEli Cohen if (device->get_link_layer) 218a3f5adafSEli Cohen return device->get_link_layer(device, port_num); 219a3f5adafSEli Cohen 22082901e3eSLeon Romanovsky lt = rdma_node_get_transport(device->node_type); 22182901e3eSLeon Romanovsky if (lt == RDMA_TRANSPORT_IB) 222a3f5adafSEli Cohen return IB_LINK_LAYER_INFINIBAND; 22382901e3eSLeon Romanovsky 224a3f5adafSEli Cohen return IB_LINK_LAYER_ETHERNET; 225a3f5adafSEli Cohen } 226a3f5adafSEli Cohen EXPORT_SYMBOL(rdma_port_get_link_layer); 227a3f5adafSEli Cohen 2281da177e4SLinus Torvalds /* Protection domains */ 2291da177e4SLinus Torvalds 23096249d70SJason Gunthorpe /** 23196249d70SJason Gunthorpe * ib_alloc_pd - Allocates an unused protection domain. 23296249d70SJason Gunthorpe * @device: The device on which to allocate the protection domain. 23396249d70SJason Gunthorpe * 23496249d70SJason Gunthorpe * A protection domain object provides an association between QPs, shared 23596249d70SJason Gunthorpe * receive queues, address handles, memory regions, and memory windows. 23696249d70SJason Gunthorpe * 23796249d70SJason Gunthorpe * Every PD has a local_dma_lkey which can be used as the lkey value for local 23896249d70SJason Gunthorpe * memory operations. 23996249d70SJason Gunthorpe */ 240ed082d36SChristoph Hellwig struct ib_pd *__ib_alloc_pd(struct ib_device *device, unsigned int flags, 241ed082d36SChristoph Hellwig const char *caller) 2421da177e4SLinus Torvalds { 2431da177e4SLinus Torvalds struct ib_pd *pd; 244ed082d36SChristoph Hellwig int mr_access_flags = 0; 2451da177e4SLinus Torvalds 246b5e81bf5SRoland Dreier pd = device->alloc_pd(device, NULL, NULL); 24796249d70SJason Gunthorpe if (IS_ERR(pd)) 24896249d70SJason Gunthorpe return pd; 2491da177e4SLinus Torvalds 2501da177e4SLinus Torvalds pd->device = device; 251b5e81bf5SRoland Dreier pd->uobject = NULL; 25250d46335SChristoph Hellwig pd->__internal_mr = NULL; 2531da177e4SLinus Torvalds atomic_set(&pd->usecnt, 0); 254ed082d36SChristoph Hellwig pd->flags = flags; 25596249d70SJason Gunthorpe 25686bee4c9SOr Gerlitz if (device->attrs.device_cap_flags & IB_DEVICE_LOCAL_DMA_LKEY) 25796249d70SJason Gunthorpe pd->local_dma_lkey = device->local_dma_lkey; 258ed082d36SChristoph Hellwig else 259ed082d36SChristoph Hellwig mr_access_flags |= IB_ACCESS_LOCAL_WRITE; 260ed082d36SChristoph Hellwig 261ed082d36SChristoph Hellwig if (flags & IB_PD_UNSAFE_GLOBAL_RKEY) { 262ed082d36SChristoph Hellwig pr_warn("%s: enabling unsafe global rkey\n", caller); 263ed082d36SChristoph Hellwig mr_access_flags |= IB_ACCESS_REMOTE_READ | IB_ACCESS_REMOTE_WRITE; 264ed082d36SChristoph Hellwig } 265ed082d36SChristoph Hellwig 2669d5f8c20SLeon Romanovsky pd->res.type = RDMA_RESTRACK_PD; 2679d5f8c20SLeon Romanovsky pd->res.kern_name = caller; 2689d5f8c20SLeon Romanovsky rdma_restrack_add(&pd->res); 2699d5f8c20SLeon Romanovsky 270ed082d36SChristoph Hellwig if (mr_access_flags) { 27196249d70SJason Gunthorpe struct ib_mr *mr; 27296249d70SJason Gunthorpe 2735ef990f0SChristoph Hellwig mr = pd->device->get_dma_mr(pd, mr_access_flags); 27496249d70SJason Gunthorpe if (IS_ERR(mr)) { 27596249d70SJason Gunthorpe ib_dealloc_pd(pd); 2765ef990f0SChristoph Hellwig return ERR_CAST(mr); 2771da177e4SLinus Torvalds } 2781da177e4SLinus Torvalds 2795ef990f0SChristoph Hellwig mr->device = pd->device; 2805ef990f0SChristoph Hellwig mr->pd = pd; 2815ef990f0SChristoph Hellwig mr->uobject = NULL; 2825ef990f0SChristoph Hellwig mr->need_inval = false; 2835ef990f0SChristoph Hellwig 28450d46335SChristoph Hellwig pd->__internal_mr = mr; 285ed082d36SChristoph Hellwig 286ed082d36SChristoph Hellwig if (!(device->attrs.device_cap_flags & IB_DEVICE_LOCAL_DMA_LKEY)) 28750d46335SChristoph Hellwig pd->local_dma_lkey = pd->__internal_mr->lkey; 288ed082d36SChristoph Hellwig 289ed082d36SChristoph Hellwig if (flags & IB_PD_UNSAFE_GLOBAL_RKEY) 290ed082d36SChristoph Hellwig pd->unsafe_global_rkey = pd->__internal_mr->rkey; 29196249d70SJason Gunthorpe } 292ed082d36SChristoph Hellwig 2931da177e4SLinus Torvalds return pd; 2941da177e4SLinus Torvalds } 295ed082d36SChristoph Hellwig EXPORT_SYMBOL(__ib_alloc_pd); 2961da177e4SLinus Torvalds 2977dd78647SJason Gunthorpe /** 2987dd78647SJason Gunthorpe * ib_dealloc_pd - Deallocates a protection domain. 2997dd78647SJason Gunthorpe * @pd: The protection domain to deallocate. 3007dd78647SJason Gunthorpe * 3017dd78647SJason Gunthorpe * It is an error to call this function while any resources in the pd still 3027dd78647SJason Gunthorpe * exist. The caller is responsible to synchronously destroy them and 3037dd78647SJason Gunthorpe * guarantee no new allocations will happen. 3047dd78647SJason Gunthorpe */ 3057dd78647SJason Gunthorpe void ib_dealloc_pd(struct ib_pd *pd) 3061da177e4SLinus Torvalds { 3077dd78647SJason Gunthorpe int ret; 3081da177e4SLinus Torvalds 30950d46335SChristoph Hellwig if (pd->__internal_mr) { 3105ef990f0SChristoph Hellwig ret = pd->device->dereg_mr(pd->__internal_mr); 3117dd78647SJason Gunthorpe WARN_ON(ret); 31250d46335SChristoph Hellwig pd->__internal_mr = NULL; 31396249d70SJason Gunthorpe } 31496249d70SJason Gunthorpe 3157dd78647SJason Gunthorpe /* uverbs manipulates usecnt with proper locking, while the kabi 3167dd78647SJason Gunthorpe requires the caller to guarantee we can't race here. */ 3177dd78647SJason Gunthorpe WARN_ON(atomic_read(&pd->usecnt)); 3181da177e4SLinus Torvalds 3199d5f8c20SLeon Romanovsky rdma_restrack_del(&pd->res); 3207dd78647SJason Gunthorpe /* Making delalloc_pd a void return is a WIP, no driver should return 3217dd78647SJason Gunthorpe an error here. */ 3227dd78647SJason Gunthorpe ret = pd->device->dealloc_pd(pd); 3237dd78647SJason Gunthorpe WARN_ONCE(ret, "Infiniband HW driver failed dealloc_pd"); 3241da177e4SLinus Torvalds } 3251da177e4SLinus Torvalds EXPORT_SYMBOL(ib_dealloc_pd); 3261da177e4SLinus Torvalds 3271da177e4SLinus Torvalds /* Address handles */ 3281da177e4SLinus Torvalds 3295cda6587SParav Pandit static struct ib_ah *_rdma_create_ah(struct ib_pd *pd, 3305cda6587SParav Pandit struct rdma_ah_attr *ah_attr, 3315cda6587SParav Pandit struct ib_udata *udata) 3321da177e4SLinus Torvalds { 3331da177e4SLinus Torvalds struct ib_ah *ah; 3341da177e4SLinus Torvalds 3355cda6587SParav Pandit ah = pd->device->create_ah(pd, ah_attr, udata); 3361da177e4SLinus Torvalds 3371da177e4SLinus Torvalds if (!IS_ERR(ah)) { 3381da177e4SLinus Torvalds ah->device = pd->device; 3391da177e4SLinus Torvalds ah->pd = pd; 340b5e81bf5SRoland Dreier ah->uobject = NULL; 34144c58487SDasaratharaman Chandramouli ah->type = ah_attr->type; 3421da177e4SLinus Torvalds atomic_inc(&pd->usecnt); 3431da177e4SLinus Torvalds } 3441da177e4SLinus Torvalds 3451da177e4SLinus Torvalds return ah; 3461da177e4SLinus Torvalds } 3475cda6587SParav Pandit 3485cda6587SParav Pandit struct ib_ah *rdma_create_ah(struct ib_pd *pd, struct rdma_ah_attr *ah_attr) 3495cda6587SParav Pandit { 3505cda6587SParav Pandit return _rdma_create_ah(pd, ah_attr, NULL); 3515cda6587SParav Pandit } 3520a18cfe4SDasaratharaman Chandramouli EXPORT_SYMBOL(rdma_create_ah); 3531da177e4SLinus Torvalds 3545cda6587SParav Pandit /** 3555cda6587SParav Pandit * rdma_create_user_ah - Creates an address handle for the 3565cda6587SParav Pandit * given address vector. 3575cda6587SParav Pandit * It resolves destination mac address for ah attribute of RoCE type. 3585cda6587SParav Pandit * @pd: The protection domain associated with the address handle. 3595cda6587SParav Pandit * @ah_attr: The attributes of the address vector. 3605cda6587SParav Pandit * @udata: pointer to user's input output buffer information need by 3615cda6587SParav Pandit * provider driver. 3625cda6587SParav Pandit * 3635cda6587SParav Pandit * It returns 0 on success and returns appropriate error code on error. 3645cda6587SParav Pandit * The address handle is used to reference a local or global destination 3655cda6587SParav Pandit * in all UD QP post sends. 3665cda6587SParav Pandit */ 3675cda6587SParav Pandit struct ib_ah *rdma_create_user_ah(struct ib_pd *pd, 3685cda6587SParav Pandit struct rdma_ah_attr *ah_attr, 3695cda6587SParav Pandit struct ib_udata *udata) 3705cda6587SParav Pandit { 3715cda6587SParav Pandit int err; 3725cda6587SParav Pandit 3735cda6587SParav Pandit if (ah_attr->type == RDMA_AH_ATTR_TYPE_ROCE) { 3745cda6587SParav Pandit err = ib_resolve_eth_dmac(pd->device, ah_attr); 3755cda6587SParav Pandit if (err) 3765cda6587SParav Pandit return ERR_PTR(err); 3775cda6587SParav Pandit } 3785cda6587SParav Pandit 3795cda6587SParav Pandit return _rdma_create_ah(pd, ah_attr, udata); 3805cda6587SParav Pandit } 3815cda6587SParav Pandit EXPORT_SYMBOL(rdma_create_user_ah); 3825cda6587SParav Pandit 383850d8fd7SMoni Shoua int ib_get_rdma_header_version(const union rdma_network_hdr *hdr) 384c865f246SSomnath Kotur { 385c865f246SSomnath Kotur const struct iphdr *ip4h = (struct iphdr *)&hdr->roce4grh; 386c865f246SSomnath Kotur struct iphdr ip4h_checked; 387c865f246SSomnath Kotur const struct ipv6hdr *ip6h = (struct ipv6hdr *)&hdr->ibgrh; 388c865f246SSomnath Kotur 389c865f246SSomnath Kotur /* If it's IPv6, the version must be 6, otherwise, the first 390c865f246SSomnath Kotur * 20 bytes (before the IPv4 header) are garbled. 391c865f246SSomnath Kotur */ 392c865f246SSomnath Kotur if (ip6h->version != 6) 393c865f246SSomnath Kotur return (ip4h->version == 4) ? 4 : 0; 394c865f246SSomnath Kotur /* version may be 6 or 4 because the first 20 bytes could be garbled */ 395c865f246SSomnath Kotur 396c865f246SSomnath Kotur /* RoCE v2 requires no options, thus header length 397c865f246SSomnath Kotur * must be 5 words 398c865f246SSomnath Kotur */ 399c865f246SSomnath Kotur if (ip4h->ihl != 5) 400c865f246SSomnath Kotur return 6; 401c865f246SSomnath Kotur 402c865f246SSomnath Kotur /* Verify checksum. 403c865f246SSomnath Kotur * We can't write on scattered buffers so we need to copy to 404c865f246SSomnath Kotur * temp buffer. 405c865f246SSomnath Kotur */ 406c865f246SSomnath Kotur memcpy(&ip4h_checked, ip4h, sizeof(ip4h_checked)); 407c865f246SSomnath Kotur ip4h_checked.check = 0; 408c865f246SSomnath Kotur ip4h_checked.check = ip_fast_csum((u8 *)&ip4h_checked, 5); 409c865f246SSomnath Kotur /* if IPv4 header checksum is OK, believe it */ 410c865f246SSomnath Kotur if (ip4h->check == ip4h_checked.check) 411c865f246SSomnath Kotur return 4; 412c865f246SSomnath Kotur return 6; 413c865f246SSomnath Kotur } 414850d8fd7SMoni Shoua EXPORT_SYMBOL(ib_get_rdma_header_version); 415c865f246SSomnath Kotur 416c865f246SSomnath Kotur static enum rdma_network_type ib_get_net_type_by_grh(struct ib_device *device, 417c865f246SSomnath Kotur u8 port_num, 418c865f246SSomnath Kotur const struct ib_grh *grh) 419c865f246SSomnath Kotur { 420c865f246SSomnath Kotur int grh_version; 421c865f246SSomnath Kotur 422c865f246SSomnath Kotur if (rdma_protocol_ib(device, port_num)) 423c865f246SSomnath Kotur return RDMA_NETWORK_IB; 424c865f246SSomnath Kotur 425850d8fd7SMoni Shoua grh_version = ib_get_rdma_header_version((union rdma_network_hdr *)grh); 426c865f246SSomnath Kotur 427c865f246SSomnath Kotur if (grh_version == 4) 428c865f246SSomnath Kotur return RDMA_NETWORK_IPV4; 429c865f246SSomnath Kotur 430c865f246SSomnath Kotur if (grh->next_hdr == IPPROTO_UDP) 431c865f246SSomnath Kotur return RDMA_NETWORK_IPV6; 432c865f246SSomnath Kotur 433c865f246SSomnath Kotur return RDMA_NETWORK_ROCE_V1; 434c865f246SSomnath Kotur } 435c865f246SSomnath Kotur 436dbf727deSMatan Barak struct find_gid_index_context { 437dbf727deSMatan Barak u16 vlan_id; 438c865f246SSomnath Kotur enum ib_gid_type gid_type; 439dbf727deSMatan Barak }; 440dbf727deSMatan Barak 441dbf727deSMatan Barak static bool find_gid_index(const union ib_gid *gid, 442dbf727deSMatan Barak const struct ib_gid_attr *gid_attr, 443dbf727deSMatan Barak void *context) 444dbf727deSMatan Barak { 445b0dd0d33SParav Pandit struct find_gid_index_context *ctx = context; 446dbf727deSMatan Barak 447c865f246SSomnath Kotur if (ctx->gid_type != gid_attr->gid_type) 448c865f246SSomnath Kotur return false; 449c865f246SSomnath Kotur 450dbf727deSMatan Barak if ((!!(ctx->vlan_id != 0xffff) == !is_vlan_dev(gid_attr->ndev)) || 451dbf727deSMatan Barak (is_vlan_dev(gid_attr->ndev) && 452dbf727deSMatan Barak vlan_dev_vlan_id(gid_attr->ndev) != ctx->vlan_id)) 453dbf727deSMatan Barak return false; 454dbf727deSMatan Barak 455dbf727deSMatan Barak return true; 456dbf727deSMatan Barak } 457dbf727deSMatan Barak 458dbf727deSMatan Barak static int get_sgid_index_from_eth(struct ib_device *device, u8 port_num, 459dbf727deSMatan Barak u16 vlan_id, const union ib_gid *sgid, 460c865f246SSomnath Kotur enum ib_gid_type gid_type, 461dbf727deSMatan Barak u16 *gid_index) 462dbf727deSMatan Barak { 463c865f246SSomnath Kotur struct find_gid_index_context context = {.vlan_id = vlan_id, 464c865f246SSomnath Kotur .gid_type = gid_type}; 465dbf727deSMatan Barak 466dbf727deSMatan Barak return ib_find_gid_by_filter(device, sgid, port_num, find_gid_index, 467dbf727deSMatan Barak &context, gid_index); 468dbf727deSMatan Barak } 469dbf727deSMatan Barak 470850d8fd7SMoni Shoua int ib_get_gids_from_rdma_hdr(const union rdma_network_hdr *hdr, 471c865f246SSomnath Kotur enum rdma_network_type net_type, 472c865f246SSomnath Kotur union ib_gid *sgid, union ib_gid *dgid) 473c865f246SSomnath Kotur { 474c865f246SSomnath Kotur struct sockaddr_in src_in; 475c865f246SSomnath Kotur struct sockaddr_in dst_in; 476c865f246SSomnath Kotur __be32 src_saddr, dst_saddr; 477c865f246SSomnath Kotur 478c865f246SSomnath Kotur if (!sgid || !dgid) 479c865f246SSomnath Kotur return -EINVAL; 480c865f246SSomnath Kotur 481c865f246SSomnath Kotur if (net_type == RDMA_NETWORK_IPV4) { 482c865f246SSomnath Kotur memcpy(&src_in.sin_addr.s_addr, 483c865f246SSomnath Kotur &hdr->roce4grh.saddr, 4); 484c865f246SSomnath Kotur memcpy(&dst_in.sin_addr.s_addr, 485c865f246SSomnath Kotur &hdr->roce4grh.daddr, 4); 486c865f246SSomnath Kotur src_saddr = src_in.sin_addr.s_addr; 487c865f246SSomnath Kotur dst_saddr = dst_in.sin_addr.s_addr; 488c865f246SSomnath Kotur ipv6_addr_set_v4mapped(src_saddr, 489c865f246SSomnath Kotur (struct in6_addr *)sgid); 490c865f246SSomnath Kotur ipv6_addr_set_v4mapped(dst_saddr, 491c865f246SSomnath Kotur (struct in6_addr *)dgid); 492c865f246SSomnath Kotur return 0; 493c865f246SSomnath Kotur } else if (net_type == RDMA_NETWORK_IPV6 || 494c865f246SSomnath Kotur net_type == RDMA_NETWORK_IB) { 495c865f246SSomnath Kotur *dgid = hdr->ibgrh.dgid; 496c865f246SSomnath Kotur *sgid = hdr->ibgrh.sgid; 497c865f246SSomnath Kotur return 0; 498c865f246SSomnath Kotur } else { 499c865f246SSomnath Kotur return -EINVAL; 500c865f246SSomnath Kotur } 501c865f246SSomnath Kotur } 502850d8fd7SMoni Shoua EXPORT_SYMBOL(ib_get_gids_from_rdma_hdr); 503c865f246SSomnath Kotur 5041060f865SParav Pandit /* Resolve destination mac address and hop limit for unicast destination 5051060f865SParav Pandit * GID entry, considering the source GID entry as well. 5061060f865SParav Pandit * ah_attribute must have have valid port_num, sgid_index. 5071060f865SParav Pandit */ 5081060f865SParav Pandit static int ib_resolve_unicast_gid_dmac(struct ib_device *device, 5091060f865SParav Pandit struct rdma_ah_attr *ah_attr) 5101060f865SParav Pandit { 5111060f865SParav Pandit struct ib_gid_attr sgid_attr; 5121060f865SParav Pandit struct ib_global_route *grh; 5131060f865SParav Pandit int hop_limit = 0xff; 5141060f865SParav Pandit union ib_gid sgid; 5151060f865SParav Pandit int ret; 5161060f865SParav Pandit 5171060f865SParav Pandit grh = rdma_ah_retrieve_grh(ah_attr); 5181060f865SParav Pandit 5191060f865SParav Pandit ret = ib_query_gid(device, 5201060f865SParav Pandit rdma_ah_get_port_num(ah_attr), 5211060f865SParav Pandit grh->sgid_index, 5221060f865SParav Pandit &sgid, &sgid_attr); 5231060f865SParav Pandit if (ret || !sgid_attr.ndev) { 5241060f865SParav Pandit if (!ret) 5251060f865SParav Pandit ret = -ENXIO; 5261060f865SParav Pandit return ret; 5271060f865SParav Pandit } 5281060f865SParav Pandit 52956d0a7d9SParav Pandit /* If destination is link local and source GID is RoCEv1, 53056d0a7d9SParav Pandit * IP stack is not used. 53156d0a7d9SParav Pandit */ 53256d0a7d9SParav Pandit if (rdma_link_local_addr((struct in6_addr *)grh->dgid.raw) && 53356d0a7d9SParav Pandit sgid_attr.gid_type == IB_GID_TYPE_ROCE) { 53456d0a7d9SParav Pandit rdma_get_ll_mac((struct in6_addr *)grh->dgid.raw, 53556d0a7d9SParav Pandit ah_attr->roce.dmac); 53656d0a7d9SParav Pandit goto done; 53756d0a7d9SParav Pandit } 53856d0a7d9SParav Pandit 5391060f865SParav Pandit ret = rdma_addr_find_l2_eth_by_grh(&sgid, &grh->dgid, 5401060f865SParav Pandit ah_attr->roce.dmac, 5411060f865SParav Pandit sgid_attr.ndev, &hop_limit); 54256d0a7d9SParav Pandit done: 5431060f865SParav Pandit dev_put(sgid_attr.ndev); 5441060f865SParav Pandit 5451060f865SParav Pandit grh->hop_limit = hop_limit; 5461060f865SParav Pandit return ret; 5471060f865SParav Pandit } 5481060f865SParav Pandit 54928b5b3a2SGustavo A. R. Silva /* 550f6bdb142SParav Pandit * This function initializes address handle attributes from the incoming packet. 55128b5b3a2SGustavo A. R. Silva * Incoming packet has dgid of the receiver node on which this code is 55228b5b3a2SGustavo A. R. Silva * getting executed and, sgid contains the GID of the sender. 55328b5b3a2SGustavo A. R. Silva * 55428b5b3a2SGustavo A. R. Silva * When resolving mac address of destination, the arrived dgid is used 55528b5b3a2SGustavo A. R. Silva * as sgid and, sgid is used as dgid because sgid contains destinations 55628b5b3a2SGustavo A. R. Silva * GID whom to respond to. 55728b5b3a2SGustavo A. R. Silva * 55828b5b3a2SGustavo A. R. Silva */ 559f6bdb142SParav Pandit int ib_init_ah_attr_from_wc(struct ib_device *device, u8 port_num, 56073cdaaeeSIra Weiny const struct ib_wc *wc, const struct ib_grh *grh, 56190898850SDasaratharaman Chandramouli struct rdma_ah_attr *ah_attr) 562513789edSHal Rosenstock { 563513789edSHal Rosenstock u32 flow_class; 564513789edSHal Rosenstock u16 gid_index; 565513789edSHal Rosenstock int ret; 566c865f246SSomnath Kotur enum rdma_network_type net_type = RDMA_NETWORK_IB; 567c865f246SSomnath Kotur enum ib_gid_type gid_type = IB_GID_TYPE_IB; 568c3efe750SMatan Barak int hoplimit = 0xff; 569c865f246SSomnath Kotur union ib_gid dgid; 570c865f246SSomnath Kotur union ib_gid sgid; 571513789edSHal Rosenstock 57279364227SRoland Dreier might_sleep(); 57379364227SRoland Dreier 5744e00d694SSean Hefty memset(ah_attr, 0, sizeof *ah_attr); 57544c58487SDasaratharaman Chandramouli ah_attr->type = rdma_ah_find_type(device, port_num); 576227128fcSMichael Wang if (rdma_cap_eth_ah(device, port_num)) { 577c865f246SSomnath Kotur if (wc->wc_flags & IB_WC_WITH_NETWORK_HDR_TYPE) 578c865f246SSomnath Kotur net_type = wc->network_hdr_type; 579c865f246SSomnath Kotur else 580c865f246SSomnath Kotur net_type = ib_get_net_type_by_grh(device, port_num, grh); 581c865f246SSomnath Kotur gid_type = ib_network_to_gid_type(net_type); 582c865f246SSomnath Kotur } 583850d8fd7SMoni Shoua ret = ib_get_gids_from_rdma_hdr((union rdma_network_hdr *)grh, net_type, 584c865f246SSomnath Kotur &sgid, &dgid); 585c865f246SSomnath Kotur if (ret) 586c865f246SSomnath Kotur return ret; 587c865f246SSomnath Kotur 5881060f865SParav Pandit rdma_ah_set_sl(ah_attr, wc->sl); 5891060f865SParav Pandit rdma_ah_set_port_num(ah_attr, port_num); 5901060f865SParav Pandit 591c865f246SSomnath Kotur if (rdma_protocol_roce(device, port_num)) { 592dbf727deSMatan Barak u16 vlan_id = wc->wc_flags & IB_WC_WITH_VLAN ? 593dbf727deSMatan Barak wc->vlan_id : 0xffff; 594dbf727deSMatan Barak 595dd5f03beSMatan Barak if (!(wc->wc_flags & IB_WC_GRH)) 596dd5f03beSMatan Barak return -EPROTOTYPE; 597dd5f03beSMatan Barak 5981060f865SParav Pandit ret = get_sgid_index_from_eth(device, port_num, 5991060f865SParav Pandit vlan_id, &dgid, 6001060f865SParav Pandit gid_type, &gid_index); 60120029832SMatan Barak if (ret) 60220029832SMatan Barak return ret; 60320029832SMatan Barak 6041060f865SParav Pandit flow_class = be32_to_cpu(grh->version_tclass_flow); 6051060f865SParav Pandit rdma_ah_set_grh(ah_attr, &sgid, 6061060f865SParav Pandit flow_class & 0xFFFFF, 6071060f865SParav Pandit (u8)gid_index, hoplimit, 6081060f865SParav Pandit (flow_class >> 20) & 0xFF); 6091060f865SParav Pandit return ib_resolve_unicast_gid_dmac(device, ah_attr); 6101060f865SParav Pandit } else { 611d8966fcdSDasaratharaman Chandramouli rdma_ah_set_dlid(ah_attr, wc->slid); 612d8966fcdSDasaratharaman Chandramouli rdma_ah_set_path_bits(ah_attr, wc->dlid_path_bits); 613513789edSHal Rosenstock 614513789edSHal Rosenstock if (wc->wc_flags & IB_WC_GRH) { 615b3556005SEli Cohen if (dgid.global.interface_id != cpu_to_be64(IB_SA_WELL_KNOWN_GUID)) { 616c865f246SSomnath Kotur ret = ib_find_cached_gid_by_port(device, &dgid, 617b39ffa1dSMatan Barak IB_GID_TYPE_IB, 618dbf727deSMatan Barak port_num, NULL, 619dbf727deSMatan Barak &gid_index); 620513789edSHal Rosenstock if (ret) 6214e00d694SSean Hefty return ret; 622b3556005SEli Cohen } else { 623b3556005SEli Cohen gid_index = 0; 624b3556005SEli Cohen } 625513789edSHal Rosenstock 626497677abSHal Rosenstock flow_class = be32_to_cpu(grh->version_tclass_flow); 627d8966fcdSDasaratharaman Chandramouli rdma_ah_set_grh(ah_attr, &sgid, 628d8966fcdSDasaratharaman Chandramouli flow_class & 0xFFFFF, 629d8966fcdSDasaratharaman Chandramouli (u8)gid_index, hoplimit, 630d8966fcdSDasaratharaman Chandramouli (flow_class >> 20) & 0xFF); 631513789edSHal Rosenstock } 6324e00d694SSean Hefty return 0; 6334e00d694SSean Hefty } 6341060f865SParav Pandit } 635f6bdb142SParav Pandit EXPORT_SYMBOL(ib_init_ah_attr_from_wc); 6364e00d694SSean Hefty 63773cdaaeeSIra Weiny struct ib_ah *ib_create_ah_from_wc(struct ib_pd *pd, const struct ib_wc *wc, 63873cdaaeeSIra Weiny const struct ib_grh *grh, u8 port_num) 6394e00d694SSean Hefty { 64090898850SDasaratharaman Chandramouli struct rdma_ah_attr ah_attr; 6414e00d694SSean Hefty int ret; 6424e00d694SSean Hefty 643f6bdb142SParav Pandit ret = ib_init_ah_attr_from_wc(pd->device, port_num, wc, grh, &ah_attr); 6444e00d694SSean Hefty if (ret) 6454e00d694SSean Hefty return ERR_PTR(ret); 646513789edSHal Rosenstock 6470a18cfe4SDasaratharaman Chandramouli return rdma_create_ah(pd, &ah_attr); 648513789edSHal Rosenstock } 649513789edSHal Rosenstock EXPORT_SYMBOL(ib_create_ah_from_wc); 650513789edSHal Rosenstock 65167b985b6SDasaratharaman Chandramouli int rdma_modify_ah(struct ib_ah *ah, struct rdma_ah_attr *ah_attr) 6521da177e4SLinus Torvalds { 65344c58487SDasaratharaman Chandramouli if (ah->type != ah_attr->type) 65444c58487SDasaratharaman Chandramouli return -EINVAL; 65544c58487SDasaratharaman Chandramouli 6561da177e4SLinus Torvalds return ah->device->modify_ah ? 6571da177e4SLinus Torvalds ah->device->modify_ah(ah, ah_attr) : 65887915bf8SLeon Romanovsky -EOPNOTSUPP; 6591da177e4SLinus Torvalds } 66067b985b6SDasaratharaman Chandramouli EXPORT_SYMBOL(rdma_modify_ah); 6611da177e4SLinus Torvalds 662bfbfd661SDasaratharaman Chandramouli int rdma_query_ah(struct ib_ah *ah, struct rdma_ah_attr *ah_attr) 6631da177e4SLinus Torvalds { 6641da177e4SLinus Torvalds return ah->device->query_ah ? 6651da177e4SLinus Torvalds ah->device->query_ah(ah, ah_attr) : 66687915bf8SLeon Romanovsky -EOPNOTSUPP; 6671da177e4SLinus Torvalds } 668bfbfd661SDasaratharaman Chandramouli EXPORT_SYMBOL(rdma_query_ah); 6691da177e4SLinus Torvalds 67036523159SDasaratharaman Chandramouli int rdma_destroy_ah(struct ib_ah *ah) 6711da177e4SLinus Torvalds { 6721da177e4SLinus Torvalds struct ib_pd *pd; 6731da177e4SLinus Torvalds int ret; 6741da177e4SLinus Torvalds 6751da177e4SLinus Torvalds pd = ah->pd; 6761da177e4SLinus Torvalds ret = ah->device->destroy_ah(ah); 6771da177e4SLinus Torvalds if (!ret) 6781da177e4SLinus Torvalds atomic_dec(&pd->usecnt); 6791da177e4SLinus Torvalds 6801da177e4SLinus Torvalds return ret; 6811da177e4SLinus Torvalds } 68236523159SDasaratharaman Chandramouli EXPORT_SYMBOL(rdma_destroy_ah); 6831da177e4SLinus Torvalds 684d41fcc67SRoland Dreier /* Shared receive queues */ 685d41fcc67SRoland Dreier 686d41fcc67SRoland Dreier struct ib_srq *ib_create_srq(struct ib_pd *pd, 687d41fcc67SRoland Dreier struct ib_srq_init_attr *srq_init_attr) 688d41fcc67SRoland Dreier { 689d41fcc67SRoland Dreier struct ib_srq *srq; 690d41fcc67SRoland Dreier 691d41fcc67SRoland Dreier if (!pd->device->create_srq) 69287915bf8SLeon Romanovsky return ERR_PTR(-EOPNOTSUPP); 693d41fcc67SRoland Dreier 694d41fcc67SRoland Dreier srq = pd->device->create_srq(pd, srq_init_attr, NULL); 695d41fcc67SRoland Dreier 696d41fcc67SRoland Dreier if (!IS_ERR(srq)) { 697d41fcc67SRoland Dreier srq->device = pd->device; 698d41fcc67SRoland Dreier srq->pd = pd; 699d41fcc67SRoland Dreier srq->uobject = NULL; 700d41fcc67SRoland Dreier srq->event_handler = srq_init_attr->event_handler; 701d41fcc67SRoland Dreier srq->srq_context = srq_init_attr->srq_context; 70296104edaSSean Hefty srq->srq_type = srq_init_attr->srq_type; 7031a56ff6dSArtemy Kovalyov if (ib_srq_has_cq(srq->srq_type)) { 7041a56ff6dSArtemy Kovalyov srq->ext.cq = srq_init_attr->ext.cq; 7051a56ff6dSArtemy Kovalyov atomic_inc(&srq->ext.cq->usecnt); 7061a56ff6dSArtemy Kovalyov } 707418d5130SSean Hefty if (srq->srq_type == IB_SRQT_XRC) { 708418d5130SSean Hefty srq->ext.xrc.xrcd = srq_init_attr->ext.xrc.xrcd; 709418d5130SSean Hefty atomic_inc(&srq->ext.xrc.xrcd->usecnt); 710418d5130SSean Hefty } 711d41fcc67SRoland Dreier atomic_inc(&pd->usecnt); 712d41fcc67SRoland Dreier atomic_set(&srq->usecnt, 0); 713d41fcc67SRoland Dreier } 714d41fcc67SRoland Dreier 715d41fcc67SRoland Dreier return srq; 716d41fcc67SRoland Dreier } 717d41fcc67SRoland Dreier EXPORT_SYMBOL(ib_create_srq); 718d41fcc67SRoland Dreier 719d41fcc67SRoland Dreier int ib_modify_srq(struct ib_srq *srq, 720d41fcc67SRoland Dreier struct ib_srq_attr *srq_attr, 721d41fcc67SRoland Dreier enum ib_srq_attr_mask srq_attr_mask) 722d41fcc67SRoland Dreier { 7237ce5eacbSDotan Barak return srq->device->modify_srq ? 7247ce5eacbSDotan Barak srq->device->modify_srq(srq, srq_attr, srq_attr_mask, NULL) : 72587915bf8SLeon Romanovsky -EOPNOTSUPP; 726d41fcc67SRoland Dreier } 727d41fcc67SRoland Dreier EXPORT_SYMBOL(ib_modify_srq); 728d41fcc67SRoland Dreier 729d41fcc67SRoland Dreier int ib_query_srq(struct ib_srq *srq, 730d41fcc67SRoland Dreier struct ib_srq_attr *srq_attr) 731d41fcc67SRoland Dreier { 732d41fcc67SRoland Dreier return srq->device->query_srq ? 73387915bf8SLeon Romanovsky srq->device->query_srq(srq, srq_attr) : -EOPNOTSUPP; 734d41fcc67SRoland Dreier } 735d41fcc67SRoland Dreier EXPORT_SYMBOL(ib_query_srq); 736d41fcc67SRoland Dreier 737d41fcc67SRoland Dreier int ib_destroy_srq(struct ib_srq *srq) 738d41fcc67SRoland Dreier { 739d41fcc67SRoland Dreier struct ib_pd *pd; 740418d5130SSean Hefty enum ib_srq_type srq_type; 741418d5130SSean Hefty struct ib_xrcd *uninitialized_var(xrcd); 742418d5130SSean Hefty struct ib_cq *uninitialized_var(cq); 743d41fcc67SRoland Dreier int ret; 744d41fcc67SRoland Dreier 745d41fcc67SRoland Dreier if (atomic_read(&srq->usecnt)) 746d41fcc67SRoland Dreier return -EBUSY; 747d41fcc67SRoland Dreier 748d41fcc67SRoland Dreier pd = srq->pd; 749418d5130SSean Hefty srq_type = srq->srq_type; 7501a56ff6dSArtemy Kovalyov if (ib_srq_has_cq(srq_type)) 7511a56ff6dSArtemy Kovalyov cq = srq->ext.cq; 7521a56ff6dSArtemy Kovalyov if (srq_type == IB_SRQT_XRC) 753418d5130SSean Hefty xrcd = srq->ext.xrc.xrcd; 754d41fcc67SRoland Dreier 755d41fcc67SRoland Dreier ret = srq->device->destroy_srq(srq); 756418d5130SSean Hefty if (!ret) { 757d41fcc67SRoland Dreier atomic_dec(&pd->usecnt); 7581a56ff6dSArtemy Kovalyov if (srq_type == IB_SRQT_XRC) 759418d5130SSean Hefty atomic_dec(&xrcd->usecnt); 7601a56ff6dSArtemy Kovalyov if (ib_srq_has_cq(srq_type)) 761418d5130SSean Hefty atomic_dec(&cq->usecnt); 762418d5130SSean Hefty } 763d41fcc67SRoland Dreier 764d41fcc67SRoland Dreier return ret; 765d41fcc67SRoland Dreier } 766d41fcc67SRoland Dreier EXPORT_SYMBOL(ib_destroy_srq); 767d41fcc67SRoland Dreier 7681da177e4SLinus Torvalds /* Queue pairs */ 7691da177e4SLinus Torvalds 7700e0ec7e0SSean Hefty static void __ib_shared_qp_event_handler(struct ib_event *event, void *context) 7710e0ec7e0SSean Hefty { 7720e0ec7e0SSean Hefty struct ib_qp *qp = context; 77373c40c61SYishai Hadas unsigned long flags; 7740e0ec7e0SSean Hefty 77573c40c61SYishai Hadas spin_lock_irqsave(&qp->device->event_handler_lock, flags); 7760e0ec7e0SSean Hefty list_for_each_entry(event->element.qp, &qp->open_list, open_list) 777eec9e29fSShlomo Pongratz if (event->element.qp->event_handler) 7780e0ec7e0SSean Hefty event->element.qp->event_handler(event, event->element.qp->qp_context); 77973c40c61SYishai Hadas spin_unlock_irqrestore(&qp->device->event_handler_lock, flags); 7800e0ec7e0SSean Hefty } 7810e0ec7e0SSean Hefty 782d3d72d90SSean Hefty static void __ib_insert_xrcd_qp(struct ib_xrcd *xrcd, struct ib_qp *qp) 783d3d72d90SSean Hefty { 784d3d72d90SSean Hefty mutex_lock(&xrcd->tgt_qp_mutex); 785d3d72d90SSean Hefty list_add(&qp->xrcd_list, &xrcd->tgt_qp_list); 786d3d72d90SSean Hefty mutex_unlock(&xrcd->tgt_qp_mutex); 787d3d72d90SSean Hefty } 788d3d72d90SSean Hefty 7890e0ec7e0SSean Hefty static struct ib_qp *__ib_open_qp(struct ib_qp *real_qp, 7900e0ec7e0SSean Hefty void (*event_handler)(struct ib_event *, void *), 7910e0ec7e0SSean Hefty void *qp_context) 792d3d72d90SSean Hefty { 7930e0ec7e0SSean Hefty struct ib_qp *qp; 7940e0ec7e0SSean Hefty unsigned long flags; 795d291f1a6SDaniel Jurgens int err; 7960e0ec7e0SSean Hefty 7970e0ec7e0SSean Hefty qp = kzalloc(sizeof *qp, GFP_KERNEL); 7980e0ec7e0SSean Hefty if (!qp) 7990e0ec7e0SSean Hefty return ERR_PTR(-ENOMEM); 8000e0ec7e0SSean Hefty 8010e0ec7e0SSean Hefty qp->real_qp = real_qp; 802d291f1a6SDaniel Jurgens err = ib_open_shared_qp_security(qp, real_qp->device); 803d291f1a6SDaniel Jurgens if (err) { 804d291f1a6SDaniel Jurgens kfree(qp); 805d291f1a6SDaniel Jurgens return ERR_PTR(err); 806d291f1a6SDaniel Jurgens } 807d291f1a6SDaniel Jurgens 808d291f1a6SDaniel Jurgens qp->real_qp = real_qp; 8090e0ec7e0SSean Hefty atomic_inc(&real_qp->usecnt); 8100e0ec7e0SSean Hefty qp->device = real_qp->device; 8110e0ec7e0SSean Hefty qp->event_handler = event_handler; 8120e0ec7e0SSean Hefty qp->qp_context = qp_context; 8130e0ec7e0SSean Hefty qp->qp_num = real_qp->qp_num; 8140e0ec7e0SSean Hefty qp->qp_type = real_qp->qp_type; 8150e0ec7e0SSean Hefty 8160e0ec7e0SSean Hefty spin_lock_irqsave(&real_qp->device->event_handler_lock, flags); 8170e0ec7e0SSean Hefty list_add(&qp->open_list, &real_qp->open_list); 8180e0ec7e0SSean Hefty spin_unlock_irqrestore(&real_qp->device->event_handler_lock, flags); 8190e0ec7e0SSean Hefty 8200e0ec7e0SSean Hefty return qp; 821d3d72d90SSean Hefty } 822d3d72d90SSean Hefty 8230e0ec7e0SSean Hefty struct ib_qp *ib_open_qp(struct ib_xrcd *xrcd, 8240e0ec7e0SSean Hefty struct ib_qp_open_attr *qp_open_attr) 8250e0ec7e0SSean Hefty { 8260e0ec7e0SSean Hefty struct ib_qp *qp, *real_qp; 8270e0ec7e0SSean Hefty 8280e0ec7e0SSean Hefty if (qp_open_attr->qp_type != IB_QPT_XRC_TGT) 8290e0ec7e0SSean Hefty return ERR_PTR(-EINVAL); 8300e0ec7e0SSean Hefty 8310e0ec7e0SSean Hefty qp = ERR_PTR(-EINVAL); 8320e0ec7e0SSean Hefty mutex_lock(&xrcd->tgt_qp_mutex); 8330e0ec7e0SSean Hefty list_for_each_entry(real_qp, &xrcd->tgt_qp_list, xrcd_list) { 8340e0ec7e0SSean Hefty if (real_qp->qp_num == qp_open_attr->qp_num) { 8350e0ec7e0SSean Hefty qp = __ib_open_qp(real_qp, qp_open_attr->event_handler, 8360e0ec7e0SSean Hefty qp_open_attr->qp_context); 8370e0ec7e0SSean Hefty break; 8380e0ec7e0SSean Hefty } 8390e0ec7e0SSean Hefty } 8400e0ec7e0SSean Hefty mutex_unlock(&xrcd->tgt_qp_mutex); 8410e0ec7e0SSean Hefty return qp; 8420e0ec7e0SSean Hefty } 8430e0ec7e0SSean Hefty EXPORT_SYMBOL(ib_open_qp); 8440e0ec7e0SSean Hefty 84504c41bf3SChristoph Hellwig static struct ib_qp *ib_create_xrc_qp(struct ib_qp *qp, 8461da177e4SLinus Torvalds struct ib_qp_init_attr *qp_init_attr) 8471da177e4SLinus Torvalds { 84804c41bf3SChristoph Hellwig struct ib_qp *real_qp = qp; 8491da177e4SLinus Torvalds 8500e0ec7e0SSean Hefty qp->event_handler = __ib_shared_qp_event_handler; 8510e0ec7e0SSean Hefty qp->qp_context = qp; 852b42b63cfSSean Hefty qp->pd = NULL; 853b42b63cfSSean Hefty qp->send_cq = qp->recv_cq = NULL; 854b42b63cfSSean Hefty qp->srq = NULL; 855b42b63cfSSean Hefty qp->xrcd = qp_init_attr->xrcd; 856b42b63cfSSean Hefty atomic_inc(&qp_init_attr->xrcd->usecnt); 8570e0ec7e0SSean Hefty INIT_LIST_HEAD(&qp->open_list); 8580e0ec7e0SSean Hefty 8590e0ec7e0SSean Hefty qp = __ib_open_qp(real_qp, qp_init_attr->event_handler, 8600e0ec7e0SSean Hefty qp_init_attr->qp_context); 8610e0ec7e0SSean Hefty if (!IS_ERR(qp)) 8620e0ec7e0SSean Hefty __ib_insert_xrcd_qp(qp_init_attr->xrcd, real_qp); 8630e0ec7e0SSean Hefty else 8640e0ec7e0SSean Hefty real_qp->device->destroy_qp(real_qp); 86504c41bf3SChristoph Hellwig return qp; 86604c41bf3SChristoph Hellwig } 86704c41bf3SChristoph Hellwig 86804c41bf3SChristoph Hellwig struct ib_qp *ib_create_qp(struct ib_pd *pd, 86904c41bf3SChristoph Hellwig struct ib_qp_init_attr *qp_init_attr) 87004c41bf3SChristoph Hellwig { 87104c41bf3SChristoph Hellwig struct ib_device *device = pd ? pd->device : qp_init_attr->xrcd->device; 87204c41bf3SChristoph Hellwig struct ib_qp *qp; 873a060b562SChristoph Hellwig int ret; 874a060b562SChristoph Hellwig 875a9017e23SYishai Hadas if (qp_init_attr->rwq_ind_tbl && 876a9017e23SYishai Hadas (qp_init_attr->recv_cq || 877a9017e23SYishai Hadas qp_init_attr->srq || qp_init_attr->cap.max_recv_wr || 878a9017e23SYishai Hadas qp_init_attr->cap.max_recv_sge)) 879a9017e23SYishai Hadas return ERR_PTR(-EINVAL); 880a9017e23SYishai Hadas 881a060b562SChristoph Hellwig /* 882a060b562SChristoph Hellwig * If the callers is using the RDMA API calculate the resources 883a060b562SChristoph Hellwig * needed for the RDMA READ/WRITE operations. 884a060b562SChristoph Hellwig * 885a060b562SChristoph Hellwig * Note that these callers need to pass in a port number. 886a060b562SChristoph Hellwig */ 887a060b562SChristoph Hellwig if (qp_init_attr->cap.max_rdma_ctxs) 888a060b562SChristoph Hellwig rdma_rw_init_qp(device, qp_init_attr); 88904c41bf3SChristoph Hellwig 8902f08ee36SSteve Wise qp = _ib_create_qp(device, pd, qp_init_attr, NULL, NULL); 89104c41bf3SChristoph Hellwig if (IS_ERR(qp)) 89204c41bf3SChristoph Hellwig return qp; 89304c41bf3SChristoph Hellwig 894d291f1a6SDaniel Jurgens ret = ib_create_qp_security(qp, device); 895d291f1a6SDaniel Jurgens if (ret) { 896d291f1a6SDaniel Jurgens ib_destroy_qp(qp); 897d291f1a6SDaniel Jurgens return ERR_PTR(ret); 898d291f1a6SDaniel Jurgens } 899d291f1a6SDaniel Jurgens 90004c41bf3SChristoph Hellwig qp->real_qp = qp; 90104c41bf3SChristoph Hellwig qp->qp_type = qp_init_attr->qp_type; 902a9017e23SYishai Hadas qp->rwq_ind_tbl = qp_init_attr->rwq_ind_tbl; 90304c41bf3SChristoph Hellwig 90404c41bf3SChristoph Hellwig atomic_set(&qp->usecnt, 0); 905fffb0383SChristoph Hellwig qp->mrs_used = 0; 906fffb0383SChristoph Hellwig spin_lock_init(&qp->mr_lock); 907a060b562SChristoph Hellwig INIT_LIST_HEAD(&qp->rdma_mrs); 9080e353e34SChristoph Hellwig INIT_LIST_HEAD(&qp->sig_mrs); 909498ca3c8SNoa Osherovich qp->port = 0; 910fffb0383SChristoph Hellwig 91104c41bf3SChristoph Hellwig if (qp_init_attr->qp_type == IB_QPT_XRC_TGT) 91204c41bf3SChristoph Hellwig return ib_create_xrc_qp(qp, qp_init_attr); 91304c41bf3SChristoph Hellwig 9141da177e4SLinus Torvalds qp->event_handler = qp_init_attr->event_handler; 9151da177e4SLinus Torvalds qp->qp_context = qp_init_attr->qp_context; 916b42b63cfSSean Hefty if (qp_init_attr->qp_type == IB_QPT_XRC_INI) { 917b42b63cfSSean Hefty qp->recv_cq = NULL; 918b42b63cfSSean Hefty qp->srq = NULL; 919b42b63cfSSean Hefty } else { 920b42b63cfSSean Hefty qp->recv_cq = qp_init_attr->recv_cq; 921a9017e23SYishai Hadas if (qp_init_attr->recv_cq) 922b42b63cfSSean Hefty atomic_inc(&qp_init_attr->recv_cq->usecnt); 923b42b63cfSSean Hefty qp->srq = qp_init_attr->srq; 924b42b63cfSSean Hefty if (qp->srq) 925b42b63cfSSean Hefty atomic_inc(&qp_init_attr->srq->usecnt); 926b42b63cfSSean Hefty } 927b42b63cfSSean Hefty 9281da177e4SLinus Torvalds qp->send_cq = qp_init_attr->send_cq; 929b42b63cfSSean Hefty qp->xrcd = NULL; 930b42b63cfSSean Hefty 9311da177e4SLinus Torvalds atomic_inc(&pd->usecnt); 932a9017e23SYishai Hadas if (qp_init_attr->send_cq) 9331da177e4SLinus Torvalds atomic_inc(&qp_init_attr->send_cq->usecnt); 934a9017e23SYishai Hadas if (qp_init_attr->rwq_ind_tbl) 935a9017e23SYishai Hadas atomic_inc(&qp->rwq_ind_tbl->usecnt); 936a060b562SChristoph Hellwig 937a060b562SChristoph Hellwig if (qp_init_attr->cap.max_rdma_ctxs) { 938a060b562SChristoph Hellwig ret = rdma_rw_init_mrs(qp, qp_init_attr); 939a060b562SChristoph Hellwig if (ret) { 940a060b562SChristoph Hellwig pr_err("failed to init MR pool ret= %d\n", ret); 941a060b562SChristoph Hellwig ib_destroy_qp(qp); 942b6bc1c73SSteve Wise return ERR_PTR(ret); 943a060b562SChristoph Hellwig } 944a060b562SChristoph Hellwig } 945a060b562SChristoph Hellwig 946632bc3f6SBart Van Assche /* 947632bc3f6SBart Van Assche * Note: all hw drivers guarantee that max_send_sge is lower than 948632bc3f6SBart Van Assche * the device RDMA WRITE SGE limit but not all hw drivers ensure that 949632bc3f6SBart Van Assche * max_send_sge <= max_sge_rd. 950632bc3f6SBart Van Assche */ 951632bc3f6SBart Van Assche qp->max_write_sge = qp_init_attr->cap.max_send_sge; 952632bc3f6SBart Van Assche qp->max_read_sge = min_t(u32, qp_init_attr->cap.max_send_sge, 953632bc3f6SBart Van Assche device->attrs.max_sge_rd); 954632bc3f6SBart Van Assche 9551da177e4SLinus Torvalds return qp; 9561da177e4SLinus Torvalds } 9571da177e4SLinus Torvalds EXPORT_SYMBOL(ib_create_qp); 9581da177e4SLinus Torvalds 9598a51866fSRoland Dreier static const struct { 9608a51866fSRoland Dreier int valid; 961b42b63cfSSean Hefty enum ib_qp_attr_mask req_param[IB_QPT_MAX]; 962b42b63cfSSean Hefty enum ib_qp_attr_mask opt_param[IB_QPT_MAX]; 9638a51866fSRoland Dreier } qp_state_table[IB_QPS_ERR + 1][IB_QPS_ERR + 1] = { 9648a51866fSRoland Dreier [IB_QPS_RESET] = { 9658a51866fSRoland Dreier [IB_QPS_RESET] = { .valid = 1 }, 9668a51866fSRoland Dreier [IB_QPS_INIT] = { 9678a51866fSRoland Dreier .valid = 1, 9688a51866fSRoland Dreier .req_param = { 9698a51866fSRoland Dreier [IB_QPT_UD] = (IB_QP_PKEY_INDEX | 9708a51866fSRoland Dreier IB_QP_PORT | 9718a51866fSRoland Dreier IB_QP_QKEY), 972c938a616SOr Gerlitz [IB_QPT_RAW_PACKET] = IB_QP_PORT, 9738a51866fSRoland Dreier [IB_QPT_UC] = (IB_QP_PKEY_INDEX | 9748a51866fSRoland Dreier IB_QP_PORT | 9758a51866fSRoland Dreier IB_QP_ACCESS_FLAGS), 9768a51866fSRoland Dreier [IB_QPT_RC] = (IB_QP_PKEY_INDEX | 9778a51866fSRoland Dreier IB_QP_PORT | 9788a51866fSRoland Dreier IB_QP_ACCESS_FLAGS), 979b42b63cfSSean Hefty [IB_QPT_XRC_INI] = (IB_QP_PKEY_INDEX | 980b42b63cfSSean Hefty IB_QP_PORT | 981b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS), 982b42b63cfSSean Hefty [IB_QPT_XRC_TGT] = (IB_QP_PKEY_INDEX | 983b42b63cfSSean Hefty IB_QP_PORT | 984b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS), 9858a51866fSRoland Dreier [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | 9868a51866fSRoland Dreier IB_QP_QKEY), 9878a51866fSRoland Dreier [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | 9888a51866fSRoland Dreier IB_QP_QKEY), 9898a51866fSRoland Dreier } 9908a51866fSRoland Dreier }, 9918a51866fSRoland Dreier }, 9928a51866fSRoland Dreier [IB_QPS_INIT] = { 9938a51866fSRoland Dreier [IB_QPS_RESET] = { .valid = 1 }, 9948a51866fSRoland Dreier [IB_QPS_ERR] = { .valid = 1 }, 9958a51866fSRoland Dreier [IB_QPS_INIT] = { 9968a51866fSRoland Dreier .valid = 1, 9978a51866fSRoland Dreier .opt_param = { 9988a51866fSRoland Dreier [IB_QPT_UD] = (IB_QP_PKEY_INDEX | 9998a51866fSRoland Dreier IB_QP_PORT | 10008a51866fSRoland Dreier IB_QP_QKEY), 10018a51866fSRoland Dreier [IB_QPT_UC] = (IB_QP_PKEY_INDEX | 10028a51866fSRoland Dreier IB_QP_PORT | 10038a51866fSRoland Dreier IB_QP_ACCESS_FLAGS), 10048a51866fSRoland Dreier [IB_QPT_RC] = (IB_QP_PKEY_INDEX | 10058a51866fSRoland Dreier IB_QP_PORT | 10068a51866fSRoland Dreier IB_QP_ACCESS_FLAGS), 1007b42b63cfSSean Hefty [IB_QPT_XRC_INI] = (IB_QP_PKEY_INDEX | 1008b42b63cfSSean Hefty IB_QP_PORT | 1009b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS), 1010b42b63cfSSean Hefty [IB_QPT_XRC_TGT] = (IB_QP_PKEY_INDEX | 1011b42b63cfSSean Hefty IB_QP_PORT | 1012b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS), 10138a51866fSRoland Dreier [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | 10148a51866fSRoland Dreier IB_QP_QKEY), 10158a51866fSRoland Dreier [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | 10168a51866fSRoland Dreier IB_QP_QKEY), 10178a51866fSRoland Dreier } 10188a51866fSRoland Dreier }, 10198a51866fSRoland Dreier [IB_QPS_RTR] = { 10208a51866fSRoland Dreier .valid = 1, 10218a51866fSRoland Dreier .req_param = { 10228a51866fSRoland Dreier [IB_QPT_UC] = (IB_QP_AV | 10238a51866fSRoland Dreier IB_QP_PATH_MTU | 10248a51866fSRoland Dreier IB_QP_DEST_QPN | 10258a51866fSRoland Dreier IB_QP_RQ_PSN), 10268a51866fSRoland Dreier [IB_QPT_RC] = (IB_QP_AV | 10278a51866fSRoland Dreier IB_QP_PATH_MTU | 10288a51866fSRoland Dreier IB_QP_DEST_QPN | 10298a51866fSRoland Dreier IB_QP_RQ_PSN | 10308a51866fSRoland Dreier IB_QP_MAX_DEST_RD_ATOMIC | 10318a51866fSRoland Dreier IB_QP_MIN_RNR_TIMER), 1032b42b63cfSSean Hefty [IB_QPT_XRC_INI] = (IB_QP_AV | 1033b42b63cfSSean Hefty IB_QP_PATH_MTU | 1034b42b63cfSSean Hefty IB_QP_DEST_QPN | 1035b42b63cfSSean Hefty IB_QP_RQ_PSN), 1036b42b63cfSSean Hefty [IB_QPT_XRC_TGT] = (IB_QP_AV | 1037b42b63cfSSean Hefty IB_QP_PATH_MTU | 1038b42b63cfSSean Hefty IB_QP_DEST_QPN | 1039b42b63cfSSean Hefty IB_QP_RQ_PSN | 1040b42b63cfSSean Hefty IB_QP_MAX_DEST_RD_ATOMIC | 1041b42b63cfSSean Hefty IB_QP_MIN_RNR_TIMER), 10428a51866fSRoland Dreier }, 10438a51866fSRoland Dreier .opt_param = { 10448a51866fSRoland Dreier [IB_QPT_UD] = (IB_QP_PKEY_INDEX | 10458a51866fSRoland Dreier IB_QP_QKEY), 10468a51866fSRoland Dreier [IB_QPT_UC] = (IB_QP_ALT_PATH | 10478a51866fSRoland Dreier IB_QP_ACCESS_FLAGS | 10488a51866fSRoland Dreier IB_QP_PKEY_INDEX), 10498a51866fSRoland Dreier [IB_QPT_RC] = (IB_QP_ALT_PATH | 10508a51866fSRoland Dreier IB_QP_ACCESS_FLAGS | 10518a51866fSRoland Dreier IB_QP_PKEY_INDEX), 1052b42b63cfSSean Hefty [IB_QPT_XRC_INI] = (IB_QP_ALT_PATH | 1053b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS | 1054b42b63cfSSean Hefty IB_QP_PKEY_INDEX), 1055b42b63cfSSean Hefty [IB_QPT_XRC_TGT] = (IB_QP_ALT_PATH | 1056b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS | 1057b42b63cfSSean Hefty IB_QP_PKEY_INDEX), 10588a51866fSRoland Dreier [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | 10598a51866fSRoland Dreier IB_QP_QKEY), 10608a51866fSRoland Dreier [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | 10618a51866fSRoland Dreier IB_QP_QKEY), 1062dd5f03beSMatan Barak }, 1063dbf727deSMatan Barak }, 10648a51866fSRoland Dreier }, 10658a51866fSRoland Dreier [IB_QPS_RTR] = { 10668a51866fSRoland Dreier [IB_QPS_RESET] = { .valid = 1 }, 10678a51866fSRoland Dreier [IB_QPS_ERR] = { .valid = 1 }, 10688a51866fSRoland Dreier [IB_QPS_RTS] = { 10698a51866fSRoland Dreier .valid = 1, 10708a51866fSRoland Dreier .req_param = { 10718a51866fSRoland Dreier [IB_QPT_UD] = IB_QP_SQ_PSN, 10728a51866fSRoland Dreier [IB_QPT_UC] = IB_QP_SQ_PSN, 10738a51866fSRoland Dreier [IB_QPT_RC] = (IB_QP_TIMEOUT | 10748a51866fSRoland Dreier IB_QP_RETRY_CNT | 10758a51866fSRoland Dreier IB_QP_RNR_RETRY | 10768a51866fSRoland Dreier IB_QP_SQ_PSN | 10778a51866fSRoland Dreier IB_QP_MAX_QP_RD_ATOMIC), 1078b42b63cfSSean Hefty [IB_QPT_XRC_INI] = (IB_QP_TIMEOUT | 1079b42b63cfSSean Hefty IB_QP_RETRY_CNT | 1080b42b63cfSSean Hefty IB_QP_RNR_RETRY | 1081b42b63cfSSean Hefty IB_QP_SQ_PSN | 1082b42b63cfSSean Hefty IB_QP_MAX_QP_RD_ATOMIC), 1083b42b63cfSSean Hefty [IB_QPT_XRC_TGT] = (IB_QP_TIMEOUT | 1084b42b63cfSSean Hefty IB_QP_SQ_PSN), 10858a51866fSRoland Dreier [IB_QPT_SMI] = IB_QP_SQ_PSN, 10868a51866fSRoland Dreier [IB_QPT_GSI] = IB_QP_SQ_PSN, 10878a51866fSRoland Dreier }, 10888a51866fSRoland Dreier .opt_param = { 10898a51866fSRoland Dreier [IB_QPT_UD] = (IB_QP_CUR_STATE | 10908a51866fSRoland Dreier IB_QP_QKEY), 10918a51866fSRoland Dreier [IB_QPT_UC] = (IB_QP_CUR_STATE | 10928a51866fSRoland Dreier IB_QP_ALT_PATH | 10938a51866fSRoland Dreier IB_QP_ACCESS_FLAGS | 10948a51866fSRoland Dreier IB_QP_PATH_MIG_STATE), 10958a51866fSRoland Dreier [IB_QPT_RC] = (IB_QP_CUR_STATE | 10968a51866fSRoland Dreier IB_QP_ALT_PATH | 10978a51866fSRoland Dreier IB_QP_ACCESS_FLAGS | 10988a51866fSRoland Dreier IB_QP_MIN_RNR_TIMER | 10998a51866fSRoland Dreier IB_QP_PATH_MIG_STATE), 1100b42b63cfSSean Hefty [IB_QPT_XRC_INI] = (IB_QP_CUR_STATE | 1101b42b63cfSSean Hefty IB_QP_ALT_PATH | 1102b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS | 1103b42b63cfSSean Hefty IB_QP_PATH_MIG_STATE), 1104b42b63cfSSean Hefty [IB_QPT_XRC_TGT] = (IB_QP_CUR_STATE | 1105b42b63cfSSean Hefty IB_QP_ALT_PATH | 1106b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS | 1107b42b63cfSSean Hefty IB_QP_MIN_RNR_TIMER | 1108b42b63cfSSean Hefty IB_QP_PATH_MIG_STATE), 11098a51866fSRoland Dreier [IB_QPT_SMI] = (IB_QP_CUR_STATE | 11108a51866fSRoland Dreier IB_QP_QKEY), 11118a51866fSRoland Dreier [IB_QPT_GSI] = (IB_QP_CUR_STATE | 11128a51866fSRoland Dreier IB_QP_QKEY), 1113528e5a1bSBodong Wang [IB_QPT_RAW_PACKET] = IB_QP_RATE_LIMIT, 11148a51866fSRoland Dreier } 11158a51866fSRoland Dreier } 11168a51866fSRoland Dreier }, 11178a51866fSRoland Dreier [IB_QPS_RTS] = { 11188a51866fSRoland Dreier [IB_QPS_RESET] = { .valid = 1 }, 11198a51866fSRoland Dreier [IB_QPS_ERR] = { .valid = 1 }, 11208a51866fSRoland Dreier [IB_QPS_RTS] = { 11218a51866fSRoland Dreier .valid = 1, 11228a51866fSRoland Dreier .opt_param = { 11238a51866fSRoland Dreier [IB_QPT_UD] = (IB_QP_CUR_STATE | 11248a51866fSRoland Dreier IB_QP_QKEY), 11254546d31dSDotan Barak [IB_QPT_UC] = (IB_QP_CUR_STATE | 11264546d31dSDotan Barak IB_QP_ACCESS_FLAGS | 11278a51866fSRoland Dreier IB_QP_ALT_PATH | 11288a51866fSRoland Dreier IB_QP_PATH_MIG_STATE), 11294546d31dSDotan Barak [IB_QPT_RC] = (IB_QP_CUR_STATE | 11304546d31dSDotan Barak IB_QP_ACCESS_FLAGS | 11318a51866fSRoland Dreier IB_QP_ALT_PATH | 11328a51866fSRoland Dreier IB_QP_PATH_MIG_STATE | 11338a51866fSRoland Dreier IB_QP_MIN_RNR_TIMER), 1134b42b63cfSSean Hefty [IB_QPT_XRC_INI] = (IB_QP_CUR_STATE | 1135b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS | 1136b42b63cfSSean Hefty IB_QP_ALT_PATH | 1137b42b63cfSSean Hefty IB_QP_PATH_MIG_STATE), 1138b42b63cfSSean Hefty [IB_QPT_XRC_TGT] = (IB_QP_CUR_STATE | 1139b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS | 1140b42b63cfSSean Hefty IB_QP_ALT_PATH | 1141b42b63cfSSean Hefty IB_QP_PATH_MIG_STATE | 1142b42b63cfSSean Hefty IB_QP_MIN_RNR_TIMER), 11438a51866fSRoland Dreier [IB_QPT_SMI] = (IB_QP_CUR_STATE | 11448a51866fSRoland Dreier IB_QP_QKEY), 11458a51866fSRoland Dreier [IB_QPT_GSI] = (IB_QP_CUR_STATE | 11468a51866fSRoland Dreier IB_QP_QKEY), 1147528e5a1bSBodong Wang [IB_QPT_RAW_PACKET] = IB_QP_RATE_LIMIT, 11488a51866fSRoland Dreier } 11498a51866fSRoland Dreier }, 11508a51866fSRoland Dreier [IB_QPS_SQD] = { 11518a51866fSRoland Dreier .valid = 1, 11528a51866fSRoland Dreier .opt_param = { 11538a51866fSRoland Dreier [IB_QPT_UD] = IB_QP_EN_SQD_ASYNC_NOTIFY, 11548a51866fSRoland Dreier [IB_QPT_UC] = IB_QP_EN_SQD_ASYNC_NOTIFY, 11558a51866fSRoland Dreier [IB_QPT_RC] = IB_QP_EN_SQD_ASYNC_NOTIFY, 1156b42b63cfSSean Hefty [IB_QPT_XRC_INI] = IB_QP_EN_SQD_ASYNC_NOTIFY, 1157b42b63cfSSean Hefty [IB_QPT_XRC_TGT] = IB_QP_EN_SQD_ASYNC_NOTIFY, /* ??? */ 11588a51866fSRoland Dreier [IB_QPT_SMI] = IB_QP_EN_SQD_ASYNC_NOTIFY, 11598a51866fSRoland Dreier [IB_QPT_GSI] = IB_QP_EN_SQD_ASYNC_NOTIFY 11608a51866fSRoland Dreier } 11618a51866fSRoland Dreier }, 11628a51866fSRoland Dreier }, 11638a51866fSRoland Dreier [IB_QPS_SQD] = { 11648a51866fSRoland Dreier [IB_QPS_RESET] = { .valid = 1 }, 11658a51866fSRoland Dreier [IB_QPS_ERR] = { .valid = 1 }, 11668a51866fSRoland Dreier [IB_QPS_RTS] = { 11678a51866fSRoland Dreier .valid = 1, 11688a51866fSRoland Dreier .opt_param = { 11698a51866fSRoland Dreier [IB_QPT_UD] = (IB_QP_CUR_STATE | 11708a51866fSRoland Dreier IB_QP_QKEY), 11718a51866fSRoland Dreier [IB_QPT_UC] = (IB_QP_CUR_STATE | 11728a51866fSRoland Dreier IB_QP_ALT_PATH | 11738a51866fSRoland Dreier IB_QP_ACCESS_FLAGS | 11748a51866fSRoland Dreier IB_QP_PATH_MIG_STATE), 11758a51866fSRoland Dreier [IB_QPT_RC] = (IB_QP_CUR_STATE | 11768a51866fSRoland Dreier IB_QP_ALT_PATH | 11778a51866fSRoland Dreier IB_QP_ACCESS_FLAGS | 11788a51866fSRoland Dreier IB_QP_MIN_RNR_TIMER | 11798a51866fSRoland Dreier IB_QP_PATH_MIG_STATE), 1180b42b63cfSSean Hefty [IB_QPT_XRC_INI] = (IB_QP_CUR_STATE | 1181b42b63cfSSean Hefty IB_QP_ALT_PATH | 1182b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS | 1183b42b63cfSSean Hefty IB_QP_PATH_MIG_STATE), 1184b42b63cfSSean Hefty [IB_QPT_XRC_TGT] = (IB_QP_CUR_STATE | 1185b42b63cfSSean Hefty IB_QP_ALT_PATH | 1186b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS | 1187b42b63cfSSean Hefty IB_QP_MIN_RNR_TIMER | 1188b42b63cfSSean Hefty IB_QP_PATH_MIG_STATE), 11898a51866fSRoland Dreier [IB_QPT_SMI] = (IB_QP_CUR_STATE | 11908a51866fSRoland Dreier IB_QP_QKEY), 11918a51866fSRoland Dreier [IB_QPT_GSI] = (IB_QP_CUR_STATE | 11928a51866fSRoland Dreier IB_QP_QKEY), 11938a51866fSRoland Dreier } 11948a51866fSRoland Dreier }, 11958a51866fSRoland Dreier [IB_QPS_SQD] = { 11968a51866fSRoland Dreier .valid = 1, 11978a51866fSRoland Dreier .opt_param = { 11988a51866fSRoland Dreier [IB_QPT_UD] = (IB_QP_PKEY_INDEX | 11998a51866fSRoland Dreier IB_QP_QKEY), 12008a51866fSRoland Dreier [IB_QPT_UC] = (IB_QP_AV | 12018a51866fSRoland Dreier IB_QP_ALT_PATH | 12028a51866fSRoland Dreier IB_QP_ACCESS_FLAGS | 12038a51866fSRoland Dreier IB_QP_PKEY_INDEX | 12048a51866fSRoland Dreier IB_QP_PATH_MIG_STATE), 12058a51866fSRoland Dreier [IB_QPT_RC] = (IB_QP_PORT | 12068a51866fSRoland Dreier IB_QP_AV | 12078a51866fSRoland Dreier IB_QP_TIMEOUT | 12088a51866fSRoland Dreier IB_QP_RETRY_CNT | 12098a51866fSRoland Dreier IB_QP_RNR_RETRY | 12108a51866fSRoland Dreier IB_QP_MAX_QP_RD_ATOMIC | 12118a51866fSRoland Dreier IB_QP_MAX_DEST_RD_ATOMIC | 12128a51866fSRoland Dreier IB_QP_ALT_PATH | 12138a51866fSRoland Dreier IB_QP_ACCESS_FLAGS | 12148a51866fSRoland Dreier IB_QP_PKEY_INDEX | 12158a51866fSRoland Dreier IB_QP_MIN_RNR_TIMER | 12168a51866fSRoland Dreier IB_QP_PATH_MIG_STATE), 1217b42b63cfSSean Hefty [IB_QPT_XRC_INI] = (IB_QP_PORT | 1218b42b63cfSSean Hefty IB_QP_AV | 1219b42b63cfSSean Hefty IB_QP_TIMEOUT | 1220b42b63cfSSean Hefty IB_QP_RETRY_CNT | 1221b42b63cfSSean Hefty IB_QP_RNR_RETRY | 1222b42b63cfSSean Hefty IB_QP_MAX_QP_RD_ATOMIC | 1223b42b63cfSSean Hefty IB_QP_ALT_PATH | 1224b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS | 1225b42b63cfSSean Hefty IB_QP_PKEY_INDEX | 1226b42b63cfSSean Hefty IB_QP_PATH_MIG_STATE), 1227b42b63cfSSean Hefty [IB_QPT_XRC_TGT] = (IB_QP_PORT | 1228b42b63cfSSean Hefty IB_QP_AV | 1229b42b63cfSSean Hefty IB_QP_TIMEOUT | 1230b42b63cfSSean Hefty IB_QP_MAX_DEST_RD_ATOMIC | 1231b42b63cfSSean Hefty IB_QP_ALT_PATH | 1232b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS | 1233b42b63cfSSean Hefty IB_QP_PKEY_INDEX | 1234b42b63cfSSean Hefty IB_QP_MIN_RNR_TIMER | 1235b42b63cfSSean Hefty IB_QP_PATH_MIG_STATE), 12368a51866fSRoland Dreier [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | 12378a51866fSRoland Dreier IB_QP_QKEY), 12388a51866fSRoland Dreier [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | 12398a51866fSRoland Dreier IB_QP_QKEY), 12408a51866fSRoland Dreier } 12418a51866fSRoland Dreier } 12428a51866fSRoland Dreier }, 12438a51866fSRoland Dreier [IB_QPS_SQE] = { 12448a51866fSRoland Dreier [IB_QPS_RESET] = { .valid = 1 }, 12458a51866fSRoland Dreier [IB_QPS_ERR] = { .valid = 1 }, 12468a51866fSRoland Dreier [IB_QPS_RTS] = { 12478a51866fSRoland Dreier .valid = 1, 12488a51866fSRoland Dreier .opt_param = { 12498a51866fSRoland Dreier [IB_QPT_UD] = (IB_QP_CUR_STATE | 12508a51866fSRoland Dreier IB_QP_QKEY), 12518a51866fSRoland Dreier [IB_QPT_UC] = (IB_QP_CUR_STATE | 12528a51866fSRoland Dreier IB_QP_ACCESS_FLAGS), 12538a51866fSRoland Dreier [IB_QPT_SMI] = (IB_QP_CUR_STATE | 12548a51866fSRoland Dreier IB_QP_QKEY), 12558a51866fSRoland Dreier [IB_QPT_GSI] = (IB_QP_CUR_STATE | 12568a51866fSRoland Dreier IB_QP_QKEY), 12578a51866fSRoland Dreier } 12588a51866fSRoland Dreier } 12598a51866fSRoland Dreier }, 12608a51866fSRoland Dreier [IB_QPS_ERR] = { 12618a51866fSRoland Dreier [IB_QPS_RESET] = { .valid = 1 }, 12628a51866fSRoland Dreier [IB_QPS_ERR] = { .valid = 1 } 12638a51866fSRoland Dreier } 12648a51866fSRoland Dreier }; 12658a51866fSRoland Dreier 126619b1f540SLeon Romanovsky bool ib_modify_qp_is_ok(enum ib_qp_state cur_state, enum ib_qp_state next_state, 1267dd5f03beSMatan Barak enum ib_qp_type type, enum ib_qp_attr_mask mask, 1268dd5f03beSMatan Barak enum rdma_link_layer ll) 12698a51866fSRoland Dreier { 12708a51866fSRoland Dreier enum ib_qp_attr_mask req_param, opt_param; 12718a51866fSRoland Dreier 12728a51866fSRoland Dreier if (mask & IB_QP_CUR_STATE && 12738a51866fSRoland Dreier cur_state != IB_QPS_RTR && cur_state != IB_QPS_RTS && 12748a51866fSRoland Dreier cur_state != IB_QPS_SQD && cur_state != IB_QPS_SQE) 127519b1f540SLeon Romanovsky return false; 12768a51866fSRoland Dreier 12778a51866fSRoland Dreier if (!qp_state_table[cur_state][next_state].valid) 127819b1f540SLeon Romanovsky return false; 12798a51866fSRoland Dreier 12808a51866fSRoland Dreier req_param = qp_state_table[cur_state][next_state].req_param[type]; 12818a51866fSRoland Dreier opt_param = qp_state_table[cur_state][next_state].opt_param[type]; 12828a51866fSRoland Dreier 12838a51866fSRoland Dreier if ((mask & req_param) != req_param) 128419b1f540SLeon Romanovsky return false; 12858a51866fSRoland Dreier 12868a51866fSRoland Dreier if (mask & ~(req_param | opt_param | IB_QP_STATE)) 128719b1f540SLeon Romanovsky return false; 12888a51866fSRoland Dreier 128919b1f540SLeon Romanovsky return true; 12908a51866fSRoland Dreier } 12918a51866fSRoland Dreier EXPORT_SYMBOL(ib_modify_qp_is_ok); 12928a51866fSRoland Dreier 1293c0348eb0SParav Pandit static int ib_resolve_eth_dmac(struct ib_device *device, 129490898850SDasaratharaman Chandramouli struct rdma_ah_attr *ah_attr) 1295ed4c54e5SOr Gerlitz { 1296ed4c54e5SOr Gerlitz int ret = 0; 1297d8966fcdSDasaratharaman Chandramouli struct ib_global_route *grh; 1298ed4c54e5SOr Gerlitz 1299d8966fcdSDasaratharaman Chandramouli if (!rdma_is_port_valid(device, rdma_ah_get_port_num(ah_attr))) 1300dbf727deSMatan Barak return -EINVAL; 1301dbf727deSMatan Barak 1302d8966fcdSDasaratharaman Chandramouli grh = rdma_ah_retrieve_grh(ah_attr); 1303d8966fcdSDasaratharaman Chandramouli 13049636a56fSNoa Osherovich if (rdma_is_multicast_addr((struct in6_addr *)ah_attr->grh.dgid.raw)) { 13059636a56fSNoa Osherovich if (ipv6_addr_v4mapped((struct in6_addr *)ah_attr->grh.dgid.raw)) { 13069636a56fSNoa Osherovich __be32 addr = 0; 13079636a56fSNoa Osherovich 13089636a56fSNoa Osherovich memcpy(&addr, ah_attr->grh.dgid.raw + 12, 4); 13099636a56fSNoa Osherovich ip_eth_mc_map(addr, (char *)ah_attr->roce.dmac); 13109636a56fSNoa Osherovich } else { 13119636a56fSNoa Osherovich ipv6_eth_mc_map((struct in6_addr *)ah_attr->grh.dgid.raw, 13129636a56fSNoa Osherovich (char *)ah_attr->roce.dmac); 13139636a56fSNoa Osherovich } 1314ed4c54e5SOr Gerlitz } else { 13151060f865SParav Pandit ret = ib_resolve_unicast_gid_dmac(device, ah_attr); 1316ed4c54e5SOr Gerlitz } 1317ed4c54e5SOr Gerlitz return ret; 1318ed4c54e5SOr Gerlitz } 1319ed4c54e5SOr Gerlitz 1320a512c2fbSParav Pandit /** 1321b96ac05aSParav Pandit * IB core internal function to perform QP attributes modification. 1322a512c2fbSParav Pandit */ 1323b96ac05aSParav Pandit static int _ib_modify_qp(struct ib_qp *qp, struct ib_qp_attr *attr, 1324a512c2fbSParav Pandit int attr_mask, struct ib_udata *udata) 1325a512c2fbSParav Pandit { 1326727b7e9aSMajd Dibbiny u8 port = attr_mask & IB_QP_PORT ? attr->port_num : qp->port; 1327a512c2fbSParav Pandit int ret; 1328a512c2fbSParav Pandit 1329727b7e9aSMajd Dibbiny if (rdma_ib_or_roce(qp->device, port)) { 1330727b7e9aSMajd Dibbiny if (attr_mask & IB_QP_RQ_PSN && attr->rq_psn & ~0xffffff) { 1331727b7e9aSMajd Dibbiny pr_warn("%s: %s rq_psn overflow, masking to 24 bits\n", 1332727b7e9aSMajd Dibbiny __func__, qp->device->name); 1333727b7e9aSMajd Dibbiny attr->rq_psn &= 0xffffff; 1334727b7e9aSMajd Dibbiny } 1335727b7e9aSMajd Dibbiny 1336727b7e9aSMajd Dibbiny if (attr_mask & IB_QP_SQ_PSN && attr->sq_psn & ~0xffffff) { 1337727b7e9aSMajd Dibbiny pr_warn("%s: %s sq_psn overflow, masking to 24 bits\n", 1338727b7e9aSMajd Dibbiny __func__, qp->device->name); 1339727b7e9aSMajd Dibbiny attr->sq_psn &= 0xffffff; 1340727b7e9aSMajd Dibbiny } 1341727b7e9aSMajd Dibbiny } 1342727b7e9aSMajd Dibbiny 1343498ca3c8SNoa Osherovich ret = ib_security_modify_qp(qp, attr, attr_mask, udata); 1344498ca3c8SNoa Osherovich if (!ret && (attr_mask & IB_QP_PORT)) 1345498ca3c8SNoa Osherovich qp->port = attr->port_num; 1346498ca3c8SNoa Osherovich 1347498ca3c8SNoa Osherovich return ret; 1348a512c2fbSParav Pandit } 1349b96ac05aSParav Pandit 1350a6753c4dSParav Pandit static bool is_qp_type_connected(const struct ib_qp *qp) 1351a6753c4dSParav Pandit { 1352a6753c4dSParav Pandit return (qp->qp_type == IB_QPT_UC || 1353a6753c4dSParav Pandit qp->qp_type == IB_QPT_RC || 1354a6753c4dSParav Pandit qp->qp_type == IB_QPT_XRC_INI || 1355a6753c4dSParav Pandit qp->qp_type == IB_QPT_XRC_TGT); 1356a6753c4dSParav Pandit } 1357a6753c4dSParav Pandit 1358b96ac05aSParav Pandit /** 1359b96ac05aSParav Pandit * ib_modify_qp_with_udata - Modifies the attributes for the specified QP. 1360b96ac05aSParav Pandit * @ib_qp: The QP to modify. 1361b96ac05aSParav Pandit * @attr: On input, specifies the QP attributes to modify. On output, 1362b96ac05aSParav Pandit * the current values of selected QP attributes are returned. 1363b96ac05aSParav Pandit * @attr_mask: A bit-mask used to specify which attributes of the QP 1364b96ac05aSParav Pandit * are being modified. 1365b96ac05aSParav Pandit * @udata: pointer to user's input output buffer information 1366b96ac05aSParav Pandit * are being modified. 1367b96ac05aSParav Pandit * It returns 0 on success and returns appropriate error code on error. 1368b96ac05aSParav Pandit */ 1369b96ac05aSParav Pandit int ib_modify_qp_with_udata(struct ib_qp *ib_qp, struct ib_qp_attr *attr, 1370b96ac05aSParav Pandit int attr_mask, struct ib_udata *udata) 1371b96ac05aSParav Pandit { 1372b96ac05aSParav Pandit struct ib_qp *qp = ib_qp->real_qp; 1373b96ac05aSParav Pandit int ret; 1374b96ac05aSParav Pandit 1375f2290d6dSParav Pandit if (attr_mask & IB_QP_AV && 1376a6753c4dSParav Pandit attr->ah_attr.type == RDMA_AH_ATTR_TYPE_ROCE && 1377a6753c4dSParav Pandit is_qp_type_connected(qp)) { 1378b96ac05aSParav Pandit ret = ib_resolve_eth_dmac(qp->device, &attr->ah_attr); 1379b96ac05aSParav Pandit if (ret) 1380b96ac05aSParav Pandit return ret; 1381b96ac05aSParav Pandit } 1382b96ac05aSParav Pandit return _ib_modify_qp(qp, attr, attr_mask, udata); 1383b96ac05aSParav Pandit } 1384a512c2fbSParav Pandit EXPORT_SYMBOL(ib_modify_qp_with_udata); 1385a512c2fbSParav Pandit 1386d4186194SYuval Shaia int ib_get_eth_speed(struct ib_device *dev, u8 port_num, u8 *speed, u8 *width) 1387d4186194SYuval Shaia { 1388d4186194SYuval Shaia int rc; 1389d4186194SYuval Shaia u32 netdev_speed; 1390d4186194SYuval Shaia struct net_device *netdev; 1391d4186194SYuval Shaia struct ethtool_link_ksettings lksettings; 1392d4186194SYuval Shaia 1393d4186194SYuval Shaia if (rdma_port_get_link_layer(dev, port_num) != IB_LINK_LAYER_ETHERNET) 1394d4186194SYuval Shaia return -EINVAL; 1395d4186194SYuval Shaia 1396d4186194SYuval Shaia if (!dev->get_netdev) 1397d4186194SYuval Shaia return -EOPNOTSUPP; 1398d4186194SYuval Shaia 1399d4186194SYuval Shaia netdev = dev->get_netdev(dev, port_num); 1400d4186194SYuval Shaia if (!netdev) 1401d4186194SYuval Shaia return -ENODEV; 1402d4186194SYuval Shaia 1403d4186194SYuval Shaia rtnl_lock(); 1404d4186194SYuval Shaia rc = __ethtool_get_link_ksettings(netdev, &lksettings); 1405d4186194SYuval Shaia rtnl_unlock(); 1406d4186194SYuval Shaia 1407d4186194SYuval Shaia dev_put(netdev); 1408d4186194SYuval Shaia 1409d4186194SYuval Shaia if (!rc) { 1410d4186194SYuval Shaia netdev_speed = lksettings.base.speed; 1411d4186194SYuval Shaia } else { 1412d4186194SYuval Shaia netdev_speed = SPEED_1000; 1413d4186194SYuval Shaia pr_warn("%s speed is unknown, defaulting to %d\n", netdev->name, 1414d4186194SYuval Shaia netdev_speed); 1415d4186194SYuval Shaia } 1416d4186194SYuval Shaia 1417d4186194SYuval Shaia if (netdev_speed <= SPEED_1000) { 1418d4186194SYuval Shaia *width = IB_WIDTH_1X; 1419d4186194SYuval Shaia *speed = IB_SPEED_SDR; 1420d4186194SYuval Shaia } else if (netdev_speed <= SPEED_10000) { 1421d4186194SYuval Shaia *width = IB_WIDTH_1X; 1422d4186194SYuval Shaia *speed = IB_SPEED_FDR10; 1423d4186194SYuval Shaia } else if (netdev_speed <= SPEED_20000) { 1424d4186194SYuval Shaia *width = IB_WIDTH_4X; 1425d4186194SYuval Shaia *speed = IB_SPEED_DDR; 1426d4186194SYuval Shaia } else if (netdev_speed <= SPEED_25000) { 1427d4186194SYuval Shaia *width = IB_WIDTH_1X; 1428d4186194SYuval Shaia *speed = IB_SPEED_EDR; 1429d4186194SYuval Shaia } else if (netdev_speed <= SPEED_40000) { 1430d4186194SYuval Shaia *width = IB_WIDTH_4X; 1431d4186194SYuval Shaia *speed = IB_SPEED_FDR10; 1432d4186194SYuval Shaia } else { 1433d4186194SYuval Shaia *width = IB_WIDTH_4X; 1434d4186194SYuval Shaia *speed = IB_SPEED_EDR; 1435d4186194SYuval Shaia } 1436d4186194SYuval Shaia 1437d4186194SYuval Shaia return 0; 1438d4186194SYuval Shaia } 1439d4186194SYuval Shaia EXPORT_SYMBOL(ib_get_eth_speed); 1440d4186194SYuval Shaia 14411da177e4SLinus Torvalds int ib_modify_qp(struct ib_qp *qp, 14421da177e4SLinus Torvalds struct ib_qp_attr *qp_attr, 14431da177e4SLinus Torvalds int qp_attr_mask) 14441da177e4SLinus Torvalds { 1445b96ac05aSParav Pandit return _ib_modify_qp(qp->real_qp, qp_attr, qp_attr_mask, NULL); 14461da177e4SLinus Torvalds } 14471da177e4SLinus Torvalds EXPORT_SYMBOL(ib_modify_qp); 14481da177e4SLinus Torvalds 14491da177e4SLinus Torvalds int ib_query_qp(struct ib_qp *qp, 14501da177e4SLinus Torvalds struct ib_qp_attr *qp_attr, 14511da177e4SLinus Torvalds int qp_attr_mask, 14521da177e4SLinus Torvalds struct ib_qp_init_attr *qp_init_attr) 14531da177e4SLinus Torvalds { 14541da177e4SLinus Torvalds return qp->device->query_qp ? 14550e0ec7e0SSean Hefty qp->device->query_qp(qp->real_qp, qp_attr, qp_attr_mask, qp_init_attr) : 145687915bf8SLeon Romanovsky -EOPNOTSUPP; 14571da177e4SLinus Torvalds } 14581da177e4SLinus Torvalds EXPORT_SYMBOL(ib_query_qp); 14591da177e4SLinus Torvalds 14600e0ec7e0SSean Hefty int ib_close_qp(struct ib_qp *qp) 14610e0ec7e0SSean Hefty { 14620e0ec7e0SSean Hefty struct ib_qp *real_qp; 14630e0ec7e0SSean Hefty unsigned long flags; 14640e0ec7e0SSean Hefty 14650e0ec7e0SSean Hefty real_qp = qp->real_qp; 14660e0ec7e0SSean Hefty if (real_qp == qp) 14670e0ec7e0SSean Hefty return -EINVAL; 14680e0ec7e0SSean Hefty 14690e0ec7e0SSean Hefty spin_lock_irqsave(&real_qp->device->event_handler_lock, flags); 14700e0ec7e0SSean Hefty list_del(&qp->open_list); 14710e0ec7e0SSean Hefty spin_unlock_irqrestore(&real_qp->device->event_handler_lock, flags); 14720e0ec7e0SSean Hefty 14730e0ec7e0SSean Hefty atomic_dec(&real_qp->usecnt); 14744a50881bSMoni Shoua if (qp->qp_sec) 1475d291f1a6SDaniel Jurgens ib_close_shared_qp_security(qp->qp_sec); 14760e0ec7e0SSean Hefty kfree(qp); 14770e0ec7e0SSean Hefty 14780e0ec7e0SSean Hefty return 0; 14790e0ec7e0SSean Hefty } 14800e0ec7e0SSean Hefty EXPORT_SYMBOL(ib_close_qp); 14810e0ec7e0SSean Hefty 14820e0ec7e0SSean Hefty static int __ib_destroy_shared_qp(struct ib_qp *qp) 14830e0ec7e0SSean Hefty { 14840e0ec7e0SSean Hefty struct ib_xrcd *xrcd; 14850e0ec7e0SSean Hefty struct ib_qp *real_qp; 14860e0ec7e0SSean Hefty int ret; 14870e0ec7e0SSean Hefty 14880e0ec7e0SSean Hefty real_qp = qp->real_qp; 14890e0ec7e0SSean Hefty xrcd = real_qp->xrcd; 14900e0ec7e0SSean Hefty 14910e0ec7e0SSean Hefty mutex_lock(&xrcd->tgt_qp_mutex); 14920e0ec7e0SSean Hefty ib_close_qp(qp); 14930e0ec7e0SSean Hefty if (atomic_read(&real_qp->usecnt) == 0) 14940e0ec7e0SSean Hefty list_del(&real_qp->xrcd_list); 14950e0ec7e0SSean Hefty else 14960e0ec7e0SSean Hefty real_qp = NULL; 14970e0ec7e0SSean Hefty mutex_unlock(&xrcd->tgt_qp_mutex); 14980e0ec7e0SSean Hefty 14990e0ec7e0SSean Hefty if (real_qp) { 15000e0ec7e0SSean Hefty ret = ib_destroy_qp(real_qp); 15010e0ec7e0SSean Hefty if (!ret) 15020e0ec7e0SSean Hefty atomic_dec(&xrcd->usecnt); 15030e0ec7e0SSean Hefty else 15040e0ec7e0SSean Hefty __ib_insert_xrcd_qp(xrcd, real_qp); 15050e0ec7e0SSean Hefty } 15060e0ec7e0SSean Hefty 15070e0ec7e0SSean Hefty return 0; 15080e0ec7e0SSean Hefty } 15090e0ec7e0SSean Hefty 15101da177e4SLinus Torvalds int ib_destroy_qp(struct ib_qp *qp) 15111da177e4SLinus Torvalds { 15121da177e4SLinus Torvalds struct ib_pd *pd; 15131da177e4SLinus Torvalds struct ib_cq *scq, *rcq; 15141da177e4SLinus Torvalds struct ib_srq *srq; 1515a9017e23SYishai Hadas struct ib_rwq_ind_table *ind_tbl; 1516d291f1a6SDaniel Jurgens struct ib_qp_security *sec; 15171da177e4SLinus Torvalds int ret; 15181da177e4SLinus Torvalds 1519fffb0383SChristoph Hellwig WARN_ON_ONCE(qp->mrs_used > 0); 1520fffb0383SChristoph Hellwig 15210e0ec7e0SSean Hefty if (atomic_read(&qp->usecnt)) 15220e0ec7e0SSean Hefty return -EBUSY; 15230e0ec7e0SSean Hefty 15240e0ec7e0SSean Hefty if (qp->real_qp != qp) 15250e0ec7e0SSean Hefty return __ib_destroy_shared_qp(qp); 15260e0ec7e0SSean Hefty 15271da177e4SLinus Torvalds pd = qp->pd; 15281da177e4SLinus Torvalds scq = qp->send_cq; 15291da177e4SLinus Torvalds rcq = qp->recv_cq; 15301da177e4SLinus Torvalds srq = qp->srq; 1531a9017e23SYishai Hadas ind_tbl = qp->rwq_ind_tbl; 1532d291f1a6SDaniel Jurgens sec = qp->qp_sec; 1533d291f1a6SDaniel Jurgens if (sec) 1534d291f1a6SDaniel Jurgens ib_destroy_qp_security_begin(sec); 15351da177e4SLinus Torvalds 1536a060b562SChristoph Hellwig if (!qp->uobject) 1537a060b562SChristoph Hellwig rdma_rw_cleanup_mrs(qp); 1538a060b562SChristoph Hellwig 153978a0cd64SLeon Romanovsky rdma_restrack_del(&qp->res); 15401da177e4SLinus Torvalds ret = qp->device->destroy_qp(qp); 15411da177e4SLinus Torvalds if (!ret) { 1542b42b63cfSSean Hefty if (pd) 15431da177e4SLinus Torvalds atomic_dec(&pd->usecnt); 1544b42b63cfSSean Hefty if (scq) 15451da177e4SLinus Torvalds atomic_dec(&scq->usecnt); 1546b42b63cfSSean Hefty if (rcq) 15471da177e4SLinus Torvalds atomic_dec(&rcq->usecnt); 15481da177e4SLinus Torvalds if (srq) 15491da177e4SLinus Torvalds atomic_dec(&srq->usecnt); 1550a9017e23SYishai Hadas if (ind_tbl) 1551a9017e23SYishai Hadas atomic_dec(&ind_tbl->usecnt); 1552d291f1a6SDaniel Jurgens if (sec) 1553d291f1a6SDaniel Jurgens ib_destroy_qp_security_end(sec); 1554d291f1a6SDaniel Jurgens } else { 1555d291f1a6SDaniel Jurgens if (sec) 1556d291f1a6SDaniel Jurgens ib_destroy_qp_security_abort(sec); 15571da177e4SLinus Torvalds } 15581da177e4SLinus Torvalds 15591da177e4SLinus Torvalds return ret; 15601da177e4SLinus Torvalds } 15611da177e4SLinus Torvalds EXPORT_SYMBOL(ib_destroy_qp); 15621da177e4SLinus Torvalds 15631da177e4SLinus Torvalds /* Completion queues */ 15641da177e4SLinus Torvalds 15651da177e4SLinus Torvalds struct ib_cq *ib_create_cq(struct ib_device *device, 15661da177e4SLinus Torvalds ib_comp_handler comp_handler, 15671da177e4SLinus Torvalds void (*event_handler)(struct ib_event *, void *), 15688e37210bSMatan Barak void *cq_context, 15698e37210bSMatan Barak const struct ib_cq_init_attr *cq_attr) 15701da177e4SLinus Torvalds { 15711da177e4SLinus Torvalds struct ib_cq *cq; 15721da177e4SLinus Torvalds 15738e37210bSMatan Barak cq = device->create_cq(device, cq_attr, NULL, NULL); 15741da177e4SLinus Torvalds 15751da177e4SLinus Torvalds if (!IS_ERR(cq)) { 15761da177e4SLinus Torvalds cq->device = device; 1577b5e81bf5SRoland Dreier cq->uobject = NULL; 15781da177e4SLinus Torvalds cq->comp_handler = comp_handler; 15791da177e4SLinus Torvalds cq->event_handler = event_handler; 15801da177e4SLinus Torvalds cq->cq_context = cq_context; 15811da177e4SLinus Torvalds atomic_set(&cq->usecnt, 0); 158208f294a1SLeon Romanovsky cq->res.type = RDMA_RESTRACK_CQ; 158308f294a1SLeon Romanovsky rdma_restrack_add(&cq->res); 15841da177e4SLinus Torvalds } 15851da177e4SLinus Torvalds 15861da177e4SLinus Torvalds return cq; 15871da177e4SLinus Torvalds } 15881da177e4SLinus Torvalds EXPORT_SYMBOL(ib_create_cq); 15891da177e4SLinus Torvalds 15904190b4e9SLeon Romanovsky int rdma_set_cq_moderation(struct ib_cq *cq, u16 cq_count, u16 cq_period) 15912dd57162SEli Cohen { 15922dd57162SEli Cohen return cq->device->modify_cq ? 159387915bf8SLeon Romanovsky cq->device->modify_cq(cq, cq_count, cq_period) : -EOPNOTSUPP; 15942dd57162SEli Cohen } 15954190b4e9SLeon Romanovsky EXPORT_SYMBOL(rdma_set_cq_moderation); 15962dd57162SEli Cohen 15971da177e4SLinus Torvalds int ib_destroy_cq(struct ib_cq *cq) 15981da177e4SLinus Torvalds { 15991da177e4SLinus Torvalds if (atomic_read(&cq->usecnt)) 16001da177e4SLinus Torvalds return -EBUSY; 16011da177e4SLinus Torvalds 160208f294a1SLeon Romanovsky rdma_restrack_del(&cq->res); 16031da177e4SLinus Torvalds return cq->device->destroy_cq(cq); 16041da177e4SLinus Torvalds } 16051da177e4SLinus Torvalds EXPORT_SYMBOL(ib_destroy_cq); 16061da177e4SLinus Torvalds 1607a74cd4afSRoland Dreier int ib_resize_cq(struct ib_cq *cq, int cqe) 16081da177e4SLinus Torvalds { 160940de2e54SRoland Dreier return cq->device->resize_cq ? 161087915bf8SLeon Romanovsky cq->device->resize_cq(cq, cqe, NULL) : -EOPNOTSUPP; 16111da177e4SLinus Torvalds } 16121da177e4SLinus Torvalds EXPORT_SYMBOL(ib_resize_cq); 16131da177e4SLinus Torvalds 16141da177e4SLinus Torvalds /* Memory regions */ 16151da177e4SLinus Torvalds 16161da177e4SLinus Torvalds int ib_dereg_mr(struct ib_mr *mr) 16171da177e4SLinus Torvalds { 1618ab67ed8dSChristoph Hellwig struct ib_pd *pd = mr->pd; 1619be934ccaSAriel Levkovich struct ib_dm *dm = mr->dm; 16201da177e4SLinus Torvalds int ret; 16211da177e4SLinus Torvalds 1622fccec5b8SSteve Wise rdma_restrack_del(&mr->res); 16231da177e4SLinus Torvalds ret = mr->device->dereg_mr(mr); 1624be934ccaSAriel Levkovich if (!ret) { 16251da177e4SLinus Torvalds atomic_dec(&pd->usecnt); 1626be934ccaSAriel Levkovich if (dm) 1627be934ccaSAriel Levkovich atomic_dec(&dm->usecnt); 1628be934ccaSAriel Levkovich } 16291da177e4SLinus Torvalds 16301da177e4SLinus Torvalds return ret; 16311da177e4SLinus Torvalds } 16321da177e4SLinus Torvalds EXPORT_SYMBOL(ib_dereg_mr); 16331da177e4SLinus Torvalds 16349bee178bSSagi Grimberg /** 16359bee178bSSagi Grimberg * ib_alloc_mr() - Allocates a memory region 16369bee178bSSagi Grimberg * @pd: protection domain associated with the region 16379bee178bSSagi Grimberg * @mr_type: memory region type 16389bee178bSSagi Grimberg * @max_num_sg: maximum sg entries available for registration. 16399bee178bSSagi Grimberg * 16409bee178bSSagi Grimberg * Notes: 16419bee178bSSagi Grimberg * Memory registeration page/sg lists must not exceed max_num_sg. 16429bee178bSSagi Grimberg * For mr_type IB_MR_TYPE_MEM_REG, the total length cannot exceed 16439bee178bSSagi Grimberg * max_num_sg * used_page_size. 16449bee178bSSagi Grimberg * 16459bee178bSSagi Grimberg */ 16469bee178bSSagi Grimberg struct ib_mr *ib_alloc_mr(struct ib_pd *pd, 16479bee178bSSagi Grimberg enum ib_mr_type mr_type, 16489bee178bSSagi Grimberg u32 max_num_sg) 164917cd3a2dSSagi Grimberg { 165017cd3a2dSSagi Grimberg struct ib_mr *mr; 165117cd3a2dSSagi Grimberg 1652d9f272c5SSagi Grimberg if (!pd->device->alloc_mr) 165387915bf8SLeon Romanovsky return ERR_PTR(-EOPNOTSUPP); 165417cd3a2dSSagi Grimberg 1655d9f272c5SSagi Grimberg mr = pd->device->alloc_mr(pd, mr_type, max_num_sg); 165617cd3a2dSSagi Grimberg if (!IS_ERR(mr)) { 165717cd3a2dSSagi Grimberg mr->device = pd->device; 165817cd3a2dSSagi Grimberg mr->pd = pd; 165917cd3a2dSSagi Grimberg mr->uobject = NULL; 166017cd3a2dSSagi Grimberg atomic_inc(&pd->usecnt); 1661d4a85c30SSteve Wise mr->need_inval = false; 1662fccec5b8SSteve Wise mr->res.type = RDMA_RESTRACK_MR; 1663fccec5b8SSteve Wise rdma_restrack_add(&mr->res); 166417cd3a2dSSagi Grimberg } 166517cd3a2dSSagi Grimberg 166617cd3a2dSSagi Grimberg return mr; 166717cd3a2dSSagi Grimberg } 16689bee178bSSagi Grimberg EXPORT_SYMBOL(ib_alloc_mr); 166900f7ec36SSteve Wise 16701da177e4SLinus Torvalds /* "Fast" memory regions */ 16711da177e4SLinus Torvalds 16721da177e4SLinus Torvalds struct ib_fmr *ib_alloc_fmr(struct ib_pd *pd, 16731da177e4SLinus Torvalds int mr_access_flags, 16741da177e4SLinus Torvalds struct ib_fmr_attr *fmr_attr) 16751da177e4SLinus Torvalds { 16761da177e4SLinus Torvalds struct ib_fmr *fmr; 16771da177e4SLinus Torvalds 16781da177e4SLinus Torvalds if (!pd->device->alloc_fmr) 167987915bf8SLeon Romanovsky return ERR_PTR(-EOPNOTSUPP); 16801da177e4SLinus Torvalds 16811da177e4SLinus Torvalds fmr = pd->device->alloc_fmr(pd, mr_access_flags, fmr_attr); 16821da177e4SLinus Torvalds if (!IS_ERR(fmr)) { 16831da177e4SLinus Torvalds fmr->device = pd->device; 16841da177e4SLinus Torvalds fmr->pd = pd; 16851da177e4SLinus Torvalds atomic_inc(&pd->usecnt); 16861da177e4SLinus Torvalds } 16871da177e4SLinus Torvalds 16881da177e4SLinus Torvalds return fmr; 16891da177e4SLinus Torvalds } 16901da177e4SLinus Torvalds EXPORT_SYMBOL(ib_alloc_fmr); 16911da177e4SLinus Torvalds 16921da177e4SLinus Torvalds int ib_unmap_fmr(struct list_head *fmr_list) 16931da177e4SLinus Torvalds { 16941da177e4SLinus Torvalds struct ib_fmr *fmr; 16951da177e4SLinus Torvalds 16961da177e4SLinus Torvalds if (list_empty(fmr_list)) 16971da177e4SLinus Torvalds return 0; 16981da177e4SLinus Torvalds 16991da177e4SLinus Torvalds fmr = list_entry(fmr_list->next, struct ib_fmr, list); 17001da177e4SLinus Torvalds return fmr->device->unmap_fmr(fmr_list); 17011da177e4SLinus Torvalds } 17021da177e4SLinus Torvalds EXPORT_SYMBOL(ib_unmap_fmr); 17031da177e4SLinus Torvalds 17041da177e4SLinus Torvalds int ib_dealloc_fmr(struct ib_fmr *fmr) 17051da177e4SLinus Torvalds { 17061da177e4SLinus Torvalds struct ib_pd *pd; 17071da177e4SLinus Torvalds int ret; 17081da177e4SLinus Torvalds 17091da177e4SLinus Torvalds pd = fmr->pd; 17101da177e4SLinus Torvalds ret = fmr->device->dealloc_fmr(fmr); 17111da177e4SLinus Torvalds if (!ret) 17121da177e4SLinus Torvalds atomic_dec(&pd->usecnt); 17131da177e4SLinus Torvalds 17141da177e4SLinus Torvalds return ret; 17151da177e4SLinus Torvalds } 17161da177e4SLinus Torvalds EXPORT_SYMBOL(ib_dealloc_fmr); 17171da177e4SLinus Torvalds 17181da177e4SLinus Torvalds /* Multicast groups */ 17191da177e4SLinus Torvalds 172052363335SNoa Osherovich static bool is_valid_mcast_lid(struct ib_qp *qp, u16 lid) 172152363335SNoa Osherovich { 172252363335SNoa Osherovich struct ib_qp_init_attr init_attr = {}; 172352363335SNoa Osherovich struct ib_qp_attr attr = {}; 172452363335SNoa Osherovich int num_eth_ports = 0; 172552363335SNoa Osherovich int port; 172652363335SNoa Osherovich 172752363335SNoa Osherovich /* If QP state >= init, it is assigned to a port and we can check this 172852363335SNoa Osherovich * port only. 172952363335SNoa Osherovich */ 173052363335SNoa Osherovich if (!ib_query_qp(qp, &attr, IB_QP_STATE | IB_QP_PORT, &init_attr)) { 173152363335SNoa Osherovich if (attr.qp_state >= IB_QPS_INIT) { 1732e6f9bc34SAlex Estrin if (rdma_port_get_link_layer(qp->device, attr.port_num) != 173352363335SNoa Osherovich IB_LINK_LAYER_INFINIBAND) 173452363335SNoa Osherovich return true; 173552363335SNoa Osherovich goto lid_check; 173652363335SNoa Osherovich } 173752363335SNoa Osherovich } 173852363335SNoa Osherovich 173952363335SNoa Osherovich /* Can't get a quick answer, iterate over all ports */ 174052363335SNoa Osherovich for (port = 0; port < qp->device->phys_port_cnt; port++) 1741e6f9bc34SAlex Estrin if (rdma_port_get_link_layer(qp->device, port) != 174252363335SNoa Osherovich IB_LINK_LAYER_INFINIBAND) 174352363335SNoa Osherovich num_eth_ports++; 174452363335SNoa Osherovich 174552363335SNoa Osherovich /* If we have at lease one Ethernet port, RoCE annex declares that 174652363335SNoa Osherovich * multicast LID should be ignored. We can't tell at this step if the 174752363335SNoa Osherovich * QP belongs to an IB or Ethernet port. 174852363335SNoa Osherovich */ 174952363335SNoa Osherovich if (num_eth_ports) 175052363335SNoa Osherovich return true; 175152363335SNoa Osherovich 175252363335SNoa Osherovich /* If all the ports are IB, we can check according to IB spec. */ 175352363335SNoa Osherovich lid_check: 175452363335SNoa Osherovich return !(lid < be16_to_cpu(IB_MULTICAST_LID_BASE) || 175552363335SNoa Osherovich lid == be16_to_cpu(IB_LID_PERMISSIVE)); 175652363335SNoa Osherovich } 175752363335SNoa Osherovich 17581da177e4SLinus Torvalds int ib_attach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid) 17591da177e4SLinus Torvalds { 1760c3bccbfbSOr Gerlitz int ret; 1761c3bccbfbSOr Gerlitz 17620c33aeedSJack Morgenstein if (!qp->device->attach_mcast) 176387915bf8SLeon Romanovsky return -EOPNOTSUPP; 1764be1d325aSNoa Osherovich 1765be1d325aSNoa Osherovich if (!rdma_is_multicast_addr((struct in6_addr *)gid->raw) || 1766be1d325aSNoa Osherovich qp->qp_type != IB_QPT_UD || !is_valid_mcast_lid(qp, lid)) 17670c33aeedSJack Morgenstein return -EINVAL; 17680c33aeedSJack Morgenstein 1769c3bccbfbSOr Gerlitz ret = qp->device->attach_mcast(qp, gid, lid); 1770c3bccbfbSOr Gerlitz if (!ret) 1771c3bccbfbSOr Gerlitz atomic_inc(&qp->usecnt); 1772c3bccbfbSOr Gerlitz return ret; 17731da177e4SLinus Torvalds } 17741da177e4SLinus Torvalds EXPORT_SYMBOL(ib_attach_mcast); 17751da177e4SLinus Torvalds 17761da177e4SLinus Torvalds int ib_detach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid) 17771da177e4SLinus Torvalds { 1778c3bccbfbSOr Gerlitz int ret; 1779c3bccbfbSOr Gerlitz 17800c33aeedSJack Morgenstein if (!qp->device->detach_mcast) 178187915bf8SLeon Romanovsky return -EOPNOTSUPP; 1782be1d325aSNoa Osherovich 1783be1d325aSNoa Osherovich if (!rdma_is_multicast_addr((struct in6_addr *)gid->raw) || 1784be1d325aSNoa Osherovich qp->qp_type != IB_QPT_UD || !is_valid_mcast_lid(qp, lid)) 17850c33aeedSJack Morgenstein return -EINVAL; 17860c33aeedSJack Morgenstein 1787c3bccbfbSOr Gerlitz ret = qp->device->detach_mcast(qp, gid, lid); 1788c3bccbfbSOr Gerlitz if (!ret) 1789c3bccbfbSOr Gerlitz atomic_dec(&qp->usecnt); 1790c3bccbfbSOr Gerlitz return ret; 17911da177e4SLinus Torvalds } 17921da177e4SLinus Torvalds EXPORT_SYMBOL(ib_detach_mcast); 179359991f94SSean Hefty 1794f66c8ba4SLeon Romanovsky struct ib_xrcd *__ib_alloc_xrcd(struct ib_device *device, const char *caller) 179559991f94SSean Hefty { 179659991f94SSean Hefty struct ib_xrcd *xrcd; 179759991f94SSean Hefty 179859991f94SSean Hefty if (!device->alloc_xrcd) 179987915bf8SLeon Romanovsky return ERR_PTR(-EOPNOTSUPP); 180059991f94SSean Hefty 180159991f94SSean Hefty xrcd = device->alloc_xrcd(device, NULL, NULL); 180259991f94SSean Hefty if (!IS_ERR(xrcd)) { 180359991f94SSean Hefty xrcd->device = device; 180453d0bd1eSSean Hefty xrcd->inode = NULL; 180559991f94SSean Hefty atomic_set(&xrcd->usecnt, 0); 1806d3d72d90SSean Hefty mutex_init(&xrcd->tgt_qp_mutex); 1807d3d72d90SSean Hefty INIT_LIST_HEAD(&xrcd->tgt_qp_list); 180859991f94SSean Hefty } 180959991f94SSean Hefty 181059991f94SSean Hefty return xrcd; 181159991f94SSean Hefty } 1812f66c8ba4SLeon Romanovsky EXPORT_SYMBOL(__ib_alloc_xrcd); 181359991f94SSean Hefty 181459991f94SSean Hefty int ib_dealloc_xrcd(struct ib_xrcd *xrcd) 181559991f94SSean Hefty { 1816d3d72d90SSean Hefty struct ib_qp *qp; 1817d3d72d90SSean Hefty int ret; 1818d3d72d90SSean Hefty 181959991f94SSean Hefty if (atomic_read(&xrcd->usecnt)) 182059991f94SSean Hefty return -EBUSY; 182159991f94SSean Hefty 1822d3d72d90SSean Hefty while (!list_empty(&xrcd->tgt_qp_list)) { 1823d3d72d90SSean Hefty qp = list_entry(xrcd->tgt_qp_list.next, struct ib_qp, xrcd_list); 1824d3d72d90SSean Hefty ret = ib_destroy_qp(qp); 1825d3d72d90SSean Hefty if (ret) 1826d3d72d90SSean Hefty return ret; 1827d3d72d90SSean Hefty } 1828d3d72d90SSean Hefty 182959991f94SSean Hefty return xrcd->device->dealloc_xrcd(xrcd); 183059991f94SSean Hefty } 183159991f94SSean Hefty EXPORT_SYMBOL(ib_dealloc_xrcd); 1832319a441dSHadar Hen Zion 18335fd251c8SYishai Hadas /** 18345fd251c8SYishai Hadas * ib_create_wq - Creates a WQ associated with the specified protection 18355fd251c8SYishai Hadas * domain. 18365fd251c8SYishai Hadas * @pd: The protection domain associated with the WQ. 18371f58621eSRandy Dunlap * @wq_attr: A list of initial attributes required to create the 18385fd251c8SYishai Hadas * WQ. If WQ creation succeeds, then the attributes are updated to 18395fd251c8SYishai Hadas * the actual capabilities of the created WQ. 18405fd251c8SYishai Hadas * 18411f58621eSRandy Dunlap * wq_attr->max_wr and wq_attr->max_sge determine 18425fd251c8SYishai Hadas * the requested size of the WQ, and set to the actual values allocated 18435fd251c8SYishai Hadas * on return. 18445fd251c8SYishai Hadas * If ib_create_wq() succeeds, then max_wr and max_sge will always be 18455fd251c8SYishai Hadas * at least as large as the requested values. 18465fd251c8SYishai Hadas */ 18475fd251c8SYishai Hadas struct ib_wq *ib_create_wq(struct ib_pd *pd, 18485fd251c8SYishai Hadas struct ib_wq_init_attr *wq_attr) 18495fd251c8SYishai Hadas { 18505fd251c8SYishai Hadas struct ib_wq *wq; 18515fd251c8SYishai Hadas 18525fd251c8SYishai Hadas if (!pd->device->create_wq) 185387915bf8SLeon Romanovsky return ERR_PTR(-EOPNOTSUPP); 18545fd251c8SYishai Hadas 18555fd251c8SYishai Hadas wq = pd->device->create_wq(pd, wq_attr, NULL); 18565fd251c8SYishai Hadas if (!IS_ERR(wq)) { 18575fd251c8SYishai Hadas wq->event_handler = wq_attr->event_handler; 18585fd251c8SYishai Hadas wq->wq_context = wq_attr->wq_context; 18595fd251c8SYishai Hadas wq->wq_type = wq_attr->wq_type; 18605fd251c8SYishai Hadas wq->cq = wq_attr->cq; 18615fd251c8SYishai Hadas wq->device = pd->device; 18625fd251c8SYishai Hadas wq->pd = pd; 18635fd251c8SYishai Hadas wq->uobject = NULL; 18645fd251c8SYishai Hadas atomic_inc(&pd->usecnt); 18655fd251c8SYishai Hadas atomic_inc(&wq_attr->cq->usecnt); 18665fd251c8SYishai Hadas atomic_set(&wq->usecnt, 0); 18675fd251c8SYishai Hadas } 18685fd251c8SYishai Hadas return wq; 18695fd251c8SYishai Hadas } 18705fd251c8SYishai Hadas EXPORT_SYMBOL(ib_create_wq); 18715fd251c8SYishai Hadas 18725fd251c8SYishai Hadas /** 18735fd251c8SYishai Hadas * ib_destroy_wq - Destroys the specified WQ. 18745fd251c8SYishai Hadas * @wq: The WQ to destroy. 18755fd251c8SYishai Hadas */ 18765fd251c8SYishai Hadas int ib_destroy_wq(struct ib_wq *wq) 18775fd251c8SYishai Hadas { 18785fd251c8SYishai Hadas int err; 18795fd251c8SYishai Hadas struct ib_cq *cq = wq->cq; 18805fd251c8SYishai Hadas struct ib_pd *pd = wq->pd; 18815fd251c8SYishai Hadas 18825fd251c8SYishai Hadas if (atomic_read(&wq->usecnt)) 18835fd251c8SYishai Hadas return -EBUSY; 18845fd251c8SYishai Hadas 18855fd251c8SYishai Hadas err = wq->device->destroy_wq(wq); 18865fd251c8SYishai Hadas if (!err) { 18875fd251c8SYishai Hadas atomic_dec(&pd->usecnt); 18885fd251c8SYishai Hadas atomic_dec(&cq->usecnt); 18895fd251c8SYishai Hadas } 18905fd251c8SYishai Hadas return err; 18915fd251c8SYishai Hadas } 18925fd251c8SYishai Hadas EXPORT_SYMBOL(ib_destroy_wq); 18935fd251c8SYishai Hadas 18945fd251c8SYishai Hadas /** 18955fd251c8SYishai Hadas * ib_modify_wq - Modifies the specified WQ. 18965fd251c8SYishai Hadas * @wq: The WQ to modify. 18975fd251c8SYishai Hadas * @wq_attr: On input, specifies the WQ attributes to modify. 18985fd251c8SYishai Hadas * @wq_attr_mask: A bit-mask used to specify which attributes of the WQ 18995fd251c8SYishai Hadas * are being modified. 19005fd251c8SYishai Hadas * On output, the current values of selected WQ attributes are returned. 19015fd251c8SYishai Hadas */ 19025fd251c8SYishai Hadas int ib_modify_wq(struct ib_wq *wq, struct ib_wq_attr *wq_attr, 19035fd251c8SYishai Hadas u32 wq_attr_mask) 19045fd251c8SYishai Hadas { 19055fd251c8SYishai Hadas int err; 19065fd251c8SYishai Hadas 19075fd251c8SYishai Hadas if (!wq->device->modify_wq) 190887915bf8SLeon Romanovsky return -EOPNOTSUPP; 19095fd251c8SYishai Hadas 19105fd251c8SYishai Hadas err = wq->device->modify_wq(wq, wq_attr, wq_attr_mask, NULL); 19115fd251c8SYishai Hadas return err; 19125fd251c8SYishai Hadas } 19135fd251c8SYishai Hadas EXPORT_SYMBOL(ib_modify_wq); 19145fd251c8SYishai Hadas 19156d39786bSYishai Hadas /* 19166d39786bSYishai Hadas * ib_create_rwq_ind_table - Creates a RQ Indirection Table. 19176d39786bSYishai Hadas * @device: The device on which to create the rwq indirection table. 19186d39786bSYishai Hadas * @ib_rwq_ind_table_init_attr: A list of initial attributes required to 19196d39786bSYishai Hadas * create the Indirection Table. 19206d39786bSYishai Hadas * 19216d39786bSYishai Hadas * Note: The life time of ib_rwq_ind_table_init_attr->ind_tbl is not less 19226d39786bSYishai Hadas * than the created ib_rwq_ind_table object and the caller is responsible 19236d39786bSYishai Hadas * for its memory allocation/free. 19246d39786bSYishai Hadas */ 19256d39786bSYishai Hadas struct ib_rwq_ind_table *ib_create_rwq_ind_table(struct ib_device *device, 19266d39786bSYishai Hadas struct ib_rwq_ind_table_init_attr *init_attr) 19276d39786bSYishai Hadas { 19286d39786bSYishai Hadas struct ib_rwq_ind_table *rwq_ind_table; 19296d39786bSYishai Hadas int i; 19306d39786bSYishai Hadas u32 table_size; 19316d39786bSYishai Hadas 19326d39786bSYishai Hadas if (!device->create_rwq_ind_table) 193387915bf8SLeon Romanovsky return ERR_PTR(-EOPNOTSUPP); 19346d39786bSYishai Hadas 19356d39786bSYishai Hadas table_size = (1 << init_attr->log_ind_tbl_size); 19366d39786bSYishai Hadas rwq_ind_table = device->create_rwq_ind_table(device, 19376d39786bSYishai Hadas init_attr, NULL); 19386d39786bSYishai Hadas if (IS_ERR(rwq_ind_table)) 19396d39786bSYishai Hadas return rwq_ind_table; 19406d39786bSYishai Hadas 19416d39786bSYishai Hadas rwq_ind_table->ind_tbl = init_attr->ind_tbl; 19426d39786bSYishai Hadas rwq_ind_table->log_ind_tbl_size = init_attr->log_ind_tbl_size; 19436d39786bSYishai Hadas rwq_ind_table->device = device; 19446d39786bSYishai Hadas rwq_ind_table->uobject = NULL; 19456d39786bSYishai Hadas atomic_set(&rwq_ind_table->usecnt, 0); 19466d39786bSYishai Hadas 19476d39786bSYishai Hadas for (i = 0; i < table_size; i++) 19486d39786bSYishai Hadas atomic_inc(&rwq_ind_table->ind_tbl[i]->usecnt); 19496d39786bSYishai Hadas 19506d39786bSYishai Hadas return rwq_ind_table; 19516d39786bSYishai Hadas } 19526d39786bSYishai Hadas EXPORT_SYMBOL(ib_create_rwq_ind_table); 19536d39786bSYishai Hadas 19546d39786bSYishai Hadas /* 19556d39786bSYishai Hadas * ib_destroy_rwq_ind_table - Destroys the specified Indirection Table. 19566d39786bSYishai Hadas * @wq_ind_table: The Indirection Table to destroy. 19576d39786bSYishai Hadas */ 19586d39786bSYishai Hadas int ib_destroy_rwq_ind_table(struct ib_rwq_ind_table *rwq_ind_table) 19596d39786bSYishai Hadas { 19606d39786bSYishai Hadas int err, i; 19616d39786bSYishai Hadas u32 table_size = (1 << rwq_ind_table->log_ind_tbl_size); 19626d39786bSYishai Hadas struct ib_wq **ind_tbl = rwq_ind_table->ind_tbl; 19636d39786bSYishai Hadas 19646d39786bSYishai Hadas if (atomic_read(&rwq_ind_table->usecnt)) 19656d39786bSYishai Hadas return -EBUSY; 19666d39786bSYishai Hadas 19676d39786bSYishai Hadas err = rwq_ind_table->device->destroy_rwq_ind_table(rwq_ind_table); 19686d39786bSYishai Hadas if (!err) { 19696d39786bSYishai Hadas for (i = 0; i < table_size; i++) 19706d39786bSYishai Hadas atomic_dec(&ind_tbl[i]->usecnt); 19716d39786bSYishai Hadas } 19726d39786bSYishai Hadas 19736d39786bSYishai Hadas return err; 19746d39786bSYishai Hadas } 19756d39786bSYishai Hadas EXPORT_SYMBOL(ib_destroy_rwq_ind_table); 19766d39786bSYishai Hadas 1977319a441dSHadar Hen Zion struct ib_flow *ib_create_flow(struct ib_qp *qp, 1978319a441dSHadar Hen Zion struct ib_flow_attr *flow_attr, 1979319a441dSHadar Hen Zion int domain) 1980319a441dSHadar Hen Zion { 1981319a441dSHadar Hen Zion struct ib_flow *flow_id; 1982319a441dSHadar Hen Zion if (!qp->device->create_flow) 198387915bf8SLeon Romanovsky return ERR_PTR(-EOPNOTSUPP); 1984319a441dSHadar Hen Zion 198559082a32SMatan Barak flow_id = qp->device->create_flow(qp, flow_attr, domain, NULL); 19868ecc7985SMark Bloch if (!IS_ERR(flow_id)) { 1987319a441dSHadar Hen Zion atomic_inc(&qp->usecnt); 19888ecc7985SMark Bloch flow_id->qp = qp; 19898ecc7985SMark Bloch } 1990319a441dSHadar Hen Zion return flow_id; 1991319a441dSHadar Hen Zion } 1992319a441dSHadar Hen Zion EXPORT_SYMBOL(ib_create_flow); 1993319a441dSHadar Hen Zion 1994319a441dSHadar Hen Zion int ib_destroy_flow(struct ib_flow *flow_id) 1995319a441dSHadar Hen Zion { 1996319a441dSHadar Hen Zion int err; 1997319a441dSHadar Hen Zion struct ib_qp *qp = flow_id->qp; 1998319a441dSHadar Hen Zion 1999319a441dSHadar Hen Zion err = qp->device->destroy_flow(flow_id); 2000319a441dSHadar Hen Zion if (!err) 2001319a441dSHadar Hen Zion atomic_dec(&qp->usecnt); 2002319a441dSHadar Hen Zion return err; 2003319a441dSHadar Hen Zion } 2004319a441dSHadar Hen Zion EXPORT_SYMBOL(ib_destroy_flow); 20051b01d335SSagi Grimberg 20061b01d335SSagi Grimberg int ib_check_mr_status(struct ib_mr *mr, u32 check_mask, 20071b01d335SSagi Grimberg struct ib_mr_status *mr_status) 20081b01d335SSagi Grimberg { 20091b01d335SSagi Grimberg return mr->device->check_mr_status ? 201087915bf8SLeon Romanovsky mr->device->check_mr_status(mr, check_mask, mr_status) : -EOPNOTSUPP; 20111b01d335SSagi Grimberg } 20121b01d335SSagi Grimberg EXPORT_SYMBOL(ib_check_mr_status); 20134c67e2bfSSagi Grimberg 201450174a7fSEli Cohen int ib_set_vf_link_state(struct ib_device *device, int vf, u8 port, 201550174a7fSEli Cohen int state) 201650174a7fSEli Cohen { 201750174a7fSEli Cohen if (!device->set_vf_link_state) 201887915bf8SLeon Romanovsky return -EOPNOTSUPP; 201950174a7fSEli Cohen 202050174a7fSEli Cohen return device->set_vf_link_state(device, vf, port, state); 202150174a7fSEli Cohen } 202250174a7fSEli Cohen EXPORT_SYMBOL(ib_set_vf_link_state); 202350174a7fSEli Cohen 202450174a7fSEli Cohen int ib_get_vf_config(struct ib_device *device, int vf, u8 port, 202550174a7fSEli Cohen struct ifla_vf_info *info) 202650174a7fSEli Cohen { 202750174a7fSEli Cohen if (!device->get_vf_config) 202887915bf8SLeon Romanovsky return -EOPNOTSUPP; 202950174a7fSEli Cohen 203050174a7fSEli Cohen return device->get_vf_config(device, vf, port, info); 203150174a7fSEli Cohen } 203250174a7fSEli Cohen EXPORT_SYMBOL(ib_get_vf_config); 203350174a7fSEli Cohen 203450174a7fSEli Cohen int ib_get_vf_stats(struct ib_device *device, int vf, u8 port, 203550174a7fSEli Cohen struct ifla_vf_stats *stats) 203650174a7fSEli Cohen { 203750174a7fSEli Cohen if (!device->get_vf_stats) 203887915bf8SLeon Romanovsky return -EOPNOTSUPP; 203950174a7fSEli Cohen 204050174a7fSEli Cohen return device->get_vf_stats(device, vf, port, stats); 204150174a7fSEli Cohen } 204250174a7fSEli Cohen EXPORT_SYMBOL(ib_get_vf_stats); 204350174a7fSEli Cohen 204450174a7fSEli Cohen int ib_set_vf_guid(struct ib_device *device, int vf, u8 port, u64 guid, 204550174a7fSEli Cohen int type) 204650174a7fSEli Cohen { 204750174a7fSEli Cohen if (!device->set_vf_guid) 204887915bf8SLeon Romanovsky return -EOPNOTSUPP; 204950174a7fSEli Cohen 205050174a7fSEli Cohen return device->set_vf_guid(device, vf, port, guid, type); 205150174a7fSEli Cohen } 205250174a7fSEli Cohen EXPORT_SYMBOL(ib_set_vf_guid); 205350174a7fSEli Cohen 20544c67e2bfSSagi Grimberg /** 20554c67e2bfSSagi Grimberg * ib_map_mr_sg() - Map the largest prefix of a dma mapped SG list 20564c67e2bfSSagi Grimberg * and set it the memory region. 20574c67e2bfSSagi Grimberg * @mr: memory region 20584c67e2bfSSagi Grimberg * @sg: dma mapped scatterlist 20594c67e2bfSSagi Grimberg * @sg_nents: number of entries in sg 2060ff2ba993SChristoph Hellwig * @sg_offset: offset in bytes into sg 20614c67e2bfSSagi Grimberg * @page_size: page vector desired page size 20624c67e2bfSSagi Grimberg * 20634c67e2bfSSagi Grimberg * Constraints: 20644c67e2bfSSagi Grimberg * - The first sg element is allowed to have an offset. 206552746129SBart Van Assche * - Each sg element must either be aligned to page_size or virtually 206652746129SBart Van Assche * contiguous to the previous element. In case an sg element has a 206752746129SBart Van Assche * non-contiguous offset, the mapping prefix will not include it. 20684c67e2bfSSagi Grimberg * - The last sg element is allowed to have length less than page_size. 20694c67e2bfSSagi Grimberg * - If sg_nents total byte length exceeds the mr max_num_sge * page_size 20704c67e2bfSSagi Grimberg * then only max_num_sg entries will be mapped. 207152746129SBart Van Assche * - If the MR was allocated with type IB_MR_TYPE_SG_GAPS, none of these 2072f5aa9159SSagi Grimberg * constraints holds and the page_size argument is ignored. 20734c67e2bfSSagi Grimberg * 20744c67e2bfSSagi Grimberg * Returns the number of sg elements that were mapped to the memory region. 20754c67e2bfSSagi Grimberg * 20764c67e2bfSSagi Grimberg * After this completes successfully, the memory region 20774c67e2bfSSagi Grimberg * is ready for registration. 20784c67e2bfSSagi Grimberg */ 2079ff2ba993SChristoph Hellwig int ib_map_mr_sg(struct ib_mr *mr, struct scatterlist *sg, int sg_nents, 20809aa8b321SBart Van Assche unsigned int *sg_offset, unsigned int page_size) 20814c67e2bfSSagi Grimberg { 20824c67e2bfSSagi Grimberg if (unlikely(!mr->device->map_mr_sg)) 208387915bf8SLeon Romanovsky return -EOPNOTSUPP; 20844c67e2bfSSagi Grimberg 20854c67e2bfSSagi Grimberg mr->page_size = page_size; 20864c67e2bfSSagi Grimberg 2087ff2ba993SChristoph Hellwig return mr->device->map_mr_sg(mr, sg, sg_nents, sg_offset); 20884c67e2bfSSagi Grimberg } 20894c67e2bfSSagi Grimberg EXPORT_SYMBOL(ib_map_mr_sg); 20904c67e2bfSSagi Grimberg 20914c67e2bfSSagi Grimberg /** 20924c67e2bfSSagi Grimberg * ib_sg_to_pages() - Convert the largest prefix of a sg list 20934c67e2bfSSagi Grimberg * to a page vector 20944c67e2bfSSagi Grimberg * @mr: memory region 20954c67e2bfSSagi Grimberg * @sgl: dma mapped scatterlist 20964c67e2bfSSagi Grimberg * @sg_nents: number of entries in sg 20979aa8b321SBart Van Assche * @sg_offset_p: IN: start offset in bytes into sg 20989aa8b321SBart Van Assche * OUT: offset in bytes for element n of the sg of the first 20999aa8b321SBart Van Assche * byte that has not been processed where n is the return 21009aa8b321SBart Van Assche * value of this function. 21014c67e2bfSSagi Grimberg * @set_page: driver page assignment function pointer 21024c67e2bfSSagi Grimberg * 21038f5ba10eSBart Van Assche * Core service helper for drivers to convert the largest 21044c67e2bfSSagi Grimberg * prefix of given sg list to a page vector. The sg list 21054c67e2bfSSagi Grimberg * prefix converted is the prefix that meet the requirements 21064c67e2bfSSagi Grimberg * of ib_map_mr_sg. 21074c67e2bfSSagi Grimberg * 21084c67e2bfSSagi Grimberg * Returns the number of sg elements that were assigned to 21094c67e2bfSSagi Grimberg * a page vector. 21104c67e2bfSSagi Grimberg */ 2111ff2ba993SChristoph Hellwig int ib_sg_to_pages(struct ib_mr *mr, struct scatterlist *sgl, int sg_nents, 21129aa8b321SBart Van Assche unsigned int *sg_offset_p, int (*set_page)(struct ib_mr *, u64)) 21134c67e2bfSSagi Grimberg { 21144c67e2bfSSagi Grimberg struct scatterlist *sg; 2115b6aeb980SBart Van Assche u64 last_end_dma_addr = 0; 21169aa8b321SBart Van Assche unsigned int sg_offset = sg_offset_p ? *sg_offset_p : 0; 21174c67e2bfSSagi Grimberg unsigned int last_page_off = 0; 21184c67e2bfSSagi Grimberg u64 page_mask = ~((u64)mr->page_size - 1); 21198f5ba10eSBart Van Assche int i, ret; 21204c67e2bfSSagi Grimberg 21219aa8b321SBart Van Assche if (unlikely(sg_nents <= 0 || sg_offset > sg_dma_len(&sgl[0]))) 21229aa8b321SBart Van Assche return -EINVAL; 21239aa8b321SBart Van Assche 2124ff2ba993SChristoph Hellwig mr->iova = sg_dma_address(&sgl[0]) + sg_offset; 21254c67e2bfSSagi Grimberg mr->length = 0; 21264c67e2bfSSagi Grimberg 21274c67e2bfSSagi Grimberg for_each_sg(sgl, sg, sg_nents, i) { 2128ff2ba993SChristoph Hellwig u64 dma_addr = sg_dma_address(sg) + sg_offset; 21299aa8b321SBart Van Assche u64 prev_addr = dma_addr; 2130ff2ba993SChristoph Hellwig unsigned int dma_len = sg_dma_len(sg) - sg_offset; 21314c67e2bfSSagi Grimberg u64 end_dma_addr = dma_addr + dma_len; 21324c67e2bfSSagi Grimberg u64 page_addr = dma_addr & page_mask; 21334c67e2bfSSagi Grimberg 21348f5ba10eSBart Van Assche /* 21358f5ba10eSBart Van Assche * For the second and later elements, check whether either the 21368f5ba10eSBart Van Assche * end of element i-1 or the start of element i is not aligned 21378f5ba10eSBart Van Assche * on a page boundary. 21388f5ba10eSBart Van Assche */ 21398f5ba10eSBart Van Assche if (i && (last_page_off != 0 || page_addr != dma_addr)) { 21408f5ba10eSBart Van Assche /* Stop mapping if there is a gap. */ 21418f5ba10eSBart Van Assche if (last_end_dma_addr != dma_addr) 21428f5ba10eSBart Van Assche break; 21434c67e2bfSSagi Grimberg 21448f5ba10eSBart Van Assche /* 21458f5ba10eSBart Van Assche * Coalesce this element with the last. If it is small 21468f5ba10eSBart Van Assche * enough just update mr->length. Otherwise start 21478f5ba10eSBart Van Assche * mapping from the next page. 21488f5ba10eSBart Van Assche */ 21498f5ba10eSBart Van Assche goto next_page; 21504c67e2bfSSagi Grimberg } 21514c67e2bfSSagi Grimberg 21524c67e2bfSSagi Grimberg do { 21538f5ba10eSBart Van Assche ret = set_page(mr, page_addr); 21549aa8b321SBart Van Assche if (unlikely(ret < 0)) { 21559aa8b321SBart Van Assche sg_offset = prev_addr - sg_dma_address(sg); 21569aa8b321SBart Van Assche mr->length += prev_addr - dma_addr; 21579aa8b321SBart Van Assche if (sg_offset_p) 21589aa8b321SBart Van Assche *sg_offset_p = sg_offset; 21599aa8b321SBart Van Assche return i || sg_offset ? i : ret; 21609aa8b321SBart Van Assche } 21619aa8b321SBart Van Assche prev_addr = page_addr; 21628f5ba10eSBart Van Assche next_page: 21634c67e2bfSSagi Grimberg page_addr += mr->page_size; 21644c67e2bfSSagi Grimberg } while (page_addr < end_dma_addr); 21654c67e2bfSSagi Grimberg 21664c67e2bfSSagi Grimberg mr->length += dma_len; 21674c67e2bfSSagi Grimberg last_end_dma_addr = end_dma_addr; 21684c67e2bfSSagi Grimberg last_page_off = end_dma_addr & ~page_mask; 2169ff2ba993SChristoph Hellwig 2170ff2ba993SChristoph Hellwig sg_offset = 0; 21714c67e2bfSSagi Grimberg } 21724c67e2bfSSagi Grimberg 21739aa8b321SBart Van Assche if (sg_offset_p) 21749aa8b321SBart Van Assche *sg_offset_p = 0; 21754c67e2bfSSagi Grimberg return i; 21764c67e2bfSSagi Grimberg } 21774c67e2bfSSagi Grimberg EXPORT_SYMBOL(ib_sg_to_pages); 2178765d6774SSteve Wise 2179765d6774SSteve Wise struct ib_drain_cqe { 2180765d6774SSteve Wise struct ib_cqe cqe; 2181765d6774SSteve Wise struct completion done; 2182765d6774SSteve Wise }; 2183765d6774SSteve Wise 2184765d6774SSteve Wise static void ib_drain_qp_done(struct ib_cq *cq, struct ib_wc *wc) 2185765d6774SSteve Wise { 2186765d6774SSteve Wise struct ib_drain_cqe *cqe = container_of(wc->wr_cqe, struct ib_drain_cqe, 2187765d6774SSteve Wise cqe); 2188765d6774SSteve Wise 2189765d6774SSteve Wise complete(&cqe->done); 2190765d6774SSteve Wise } 2191765d6774SSteve Wise 2192765d6774SSteve Wise /* 2193765d6774SSteve Wise * Post a WR and block until its completion is reaped for the SQ. 2194765d6774SSteve Wise */ 2195765d6774SSteve Wise static void __ib_drain_sq(struct ib_qp *qp) 2196765d6774SSteve Wise { 2197f039f44fSBart Van Assche struct ib_cq *cq = qp->send_cq; 2198765d6774SSteve Wise struct ib_qp_attr attr = { .qp_state = IB_QPS_ERR }; 2199765d6774SSteve Wise struct ib_drain_cqe sdrain; 2200a1ae7d03SBart Van Assche struct ib_send_wr *bad_swr; 2201a1ae7d03SBart Van Assche struct ib_rdma_wr swr = { 2202a1ae7d03SBart Van Assche .wr = { 22036ee68773SAndrew Morton .next = NULL, 22046ee68773SAndrew Morton { .wr_cqe = &sdrain.cqe, }, 2205a1ae7d03SBart Van Assche .opcode = IB_WR_RDMA_WRITE, 2206a1ae7d03SBart Van Assche }, 2207a1ae7d03SBart Van Assche }; 2208765d6774SSteve Wise int ret; 2209765d6774SSteve Wise 2210765d6774SSteve Wise ret = ib_modify_qp(qp, &attr, IB_QP_STATE); 2211765d6774SSteve Wise if (ret) { 2212765d6774SSteve Wise WARN_ONCE(ret, "failed to drain send queue: %d\n", ret); 2213765d6774SSteve Wise return; 2214765d6774SSteve Wise } 2215765d6774SSteve Wise 2216aaebd377SMax Gurtovoy sdrain.cqe.done = ib_drain_qp_done; 2217aaebd377SMax Gurtovoy init_completion(&sdrain.done); 2218aaebd377SMax Gurtovoy 2219a1ae7d03SBart Van Assche ret = ib_post_send(qp, &swr.wr, &bad_swr); 2220765d6774SSteve Wise if (ret) { 2221765d6774SSteve Wise WARN_ONCE(ret, "failed to drain send queue: %d\n", ret); 2222765d6774SSteve Wise return; 2223765d6774SSteve Wise } 2224765d6774SSteve Wise 2225f039f44fSBart Van Assche if (cq->poll_ctx == IB_POLL_DIRECT) 2226f039f44fSBart Van Assche while (wait_for_completion_timeout(&sdrain.done, HZ / 10) <= 0) 2227f039f44fSBart Van Assche ib_process_cq_direct(cq, -1); 2228f039f44fSBart Van Assche else 2229765d6774SSteve Wise wait_for_completion(&sdrain.done); 2230765d6774SSteve Wise } 2231765d6774SSteve Wise 2232765d6774SSteve Wise /* 2233765d6774SSteve Wise * Post a WR and block until its completion is reaped for the RQ. 2234765d6774SSteve Wise */ 2235765d6774SSteve Wise static void __ib_drain_rq(struct ib_qp *qp) 2236765d6774SSteve Wise { 2237f039f44fSBart Van Assche struct ib_cq *cq = qp->recv_cq; 2238765d6774SSteve Wise struct ib_qp_attr attr = { .qp_state = IB_QPS_ERR }; 2239765d6774SSteve Wise struct ib_drain_cqe rdrain; 2240765d6774SSteve Wise struct ib_recv_wr rwr = {}, *bad_rwr; 2241765d6774SSteve Wise int ret; 2242765d6774SSteve Wise 2243765d6774SSteve Wise ret = ib_modify_qp(qp, &attr, IB_QP_STATE); 2244765d6774SSteve Wise if (ret) { 2245765d6774SSteve Wise WARN_ONCE(ret, "failed to drain recv queue: %d\n", ret); 2246765d6774SSteve Wise return; 2247765d6774SSteve Wise } 2248765d6774SSteve Wise 2249aaebd377SMax Gurtovoy rwr.wr_cqe = &rdrain.cqe; 2250aaebd377SMax Gurtovoy rdrain.cqe.done = ib_drain_qp_done; 2251aaebd377SMax Gurtovoy init_completion(&rdrain.done); 2252aaebd377SMax Gurtovoy 2253765d6774SSteve Wise ret = ib_post_recv(qp, &rwr, &bad_rwr); 2254765d6774SSteve Wise if (ret) { 2255765d6774SSteve Wise WARN_ONCE(ret, "failed to drain recv queue: %d\n", ret); 2256765d6774SSteve Wise return; 2257765d6774SSteve Wise } 2258765d6774SSteve Wise 2259f039f44fSBart Van Assche if (cq->poll_ctx == IB_POLL_DIRECT) 2260f039f44fSBart Van Assche while (wait_for_completion_timeout(&rdrain.done, HZ / 10) <= 0) 2261f039f44fSBart Van Assche ib_process_cq_direct(cq, -1); 2262f039f44fSBart Van Assche else 2263765d6774SSteve Wise wait_for_completion(&rdrain.done); 2264765d6774SSteve Wise } 2265765d6774SSteve Wise 2266765d6774SSteve Wise /** 2267765d6774SSteve Wise * ib_drain_sq() - Block until all SQ CQEs have been consumed by the 2268765d6774SSteve Wise * application. 2269765d6774SSteve Wise * @qp: queue pair to drain 2270765d6774SSteve Wise * 2271765d6774SSteve Wise * If the device has a provider-specific drain function, then 2272765d6774SSteve Wise * call that. Otherwise call the generic drain function 2273765d6774SSteve Wise * __ib_drain_sq(). 2274765d6774SSteve Wise * 2275765d6774SSteve Wise * The caller must: 2276765d6774SSteve Wise * 2277765d6774SSteve Wise * ensure there is room in the CQ and SQ for the drain work request and 2278765d6774SSteve Wise * completion. 2279765d6774SSteve Wise * 2280f039f44fSBart Van Assche * allocate the CQ using ib_alloc_cq(). 2281765d6774SSteve Wise * 2282765d6774SSteve Wise * ensure that there are no other contexts that are posting WRs concurrently. 2283765d6774SSteve Wise * Otherwise the drain is not guaranteed. 2284765d6774SSteve Wise */ 2285765d6774SSteve Wise void ib_drain_sq(struct ib_qp *qp) 2286765d6774SSteve Wise { 2287765d6774SSteve Wise if (qp->device->drain_sq) 2288765d6774SSteve Wise qp->device->drain_sq(qp); 2289765d6774SSteve Wise else 2290765d6774SSteve Wise __ib_drain_sq(qp); 2291765d6774SSteve Wise } 2292765d6774SSteve Wise EXPORT_SYMBOL(ib_drain_sq); 2293765d6774SSteve Wise 2294765d6774SSteve Wise /** 2295765d6774SSteve Wise * ib_drain_rq() - Block until all RQ CQEs have been consumed by the 2296765d6774SSteve Wise * application. 2297765d6774SSteve Wise * @qp: queue pair to drain 2298765d6774SSteve Wise * 2299765d6774SSteve Wise * If the device has a provider-specific drain function, then 2300765d6774SSteve Wise * call that. Otherwise call the generic drain function 2301765d6774SSteve Wise * __ib_drain_rq(). 2302765d6774SSteve Wise * 2303765d6774SSteve Wise * The caller must: 2304765d6774SSteve Wise * 2305765d6774SSteve Wise * ensure there is room in the CQ and RQ for the drain work request and 2306765d6774SSteve Wise * completion. 2307765d6774SSteve Wise * 2308f039f44fSBart Van Assche * allocate the CQ using ib_alloc_cq(). 2309765d6774SSteve Wise * 2310765d6774SSteve Wise * ensure that there are no other contexts that are posting WRs concurrently. 2311765d6774SSteve Wise * Otherwise the drain is not guaranteed. 2312765d6774SSteve Wise */ 2313765d6774SSteve Wise void ib_drain_rq(struct ib_qp *qp) 2314765d6774SSteve Wise { 2315765d6774SSteve Wise if (qp->device->drain_rq) 2316765d6774SSteve Wise qp->device->drain_rq(qp); 2317765d6774SSteve Wise else 2318765d6774SSteve Wise __ib_drain_rq(qp); 2319765d6774SSteve Wise } 2320765d6774SSteve Wise EXPORT_SYMBOL(ib_drain_rq); 2321765d6774SSteve Wise 2322765d6774SSteve Wise /** 2323765d6774SSteve Wise * ib_drain_qp() - Block until all CQEs have been consumed by the 2324765d6774SSteve Wise * application on both the RQ and SQ. 2325765d6774SSteve Wise * @qp: queue pair to drain 2326765d6774SSteve Wise * 2327765d6774SSteve Wise * The caller must: 2328765d6774SSteve Wise * 2329765d6774SSteve Wise * ensure there is room in the CQ(s), SQ, and RQ for drain work requests 2330765d6774SSteve Wise * and completions. 2331765d6774SSteve Wise * 2332f039f44fSBart Van Assche * allocate the CQs using ib_alloc_cq(). 2333765d6774SSteve Wise * 2334765d6774SSteve Wise * ensure that there are no other contexts that are posting WRs concurrently. 2335765d6774SSteve Wise * Otherwise the drain is not guaranteed. 2336765d6774SSteve Wise */ 2337765d6774SSteve Wise void ib_drain_qp(struct ib_qp *qp) 2338765d6774SSteve Wise { 2339765d6774SSteve Wise ib_drain_sq(qp); 234042235f80SSagi Grimberg if (!qp->srq) 2341765d6774SSteve Wise ib_drain_rq(qp); 2342765d6774SSteve Wise } 2343765d6774SSteve Wise EXPORT_SYMBOL(ib_drain_qp); 2344