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 329d97099feSJason Gunthorpe /** 330d97099feSJason Gunthorpe * rdma_copy_ah_attr - Copy rdma ah attribute from source to destination. 331d97099feSJason Gunthorpe * @dest: Pointer to destination ah_attr. Contents of the destination 332d97099feSJason Gunthorpe * pointer is assumed to be invalid and attribute are overwritten. 333d97099feSJason Gunthorpe * @src: Pointer to source ah_attr. 334d97099feSJason Gunthorpe */ 335d97099feSJason Gunthorpe void rdma_copy_ah_attr(struct rdma_ah_attr *dest, 336d97099feSJason Gunthorpe const struct rdma_ah_attr *src) 337d97099feSJason Gunthorpe { 338d97099feSJason Gunthorpe *dest = *src; 339d97099feSJason Gunthorpe if (dest->grh.sgid_attr) 340d97099feSJason Gunthorpe rdma_hold_gid_attr(dest->grh.sgid_attr); 341d97099feSJason Gunthorpe } 342d97099feSJason Gunthorpe EXPORT_SYMBOL(rdma_copy_ah_attr); 343d97099feSJason Gunthorpe 344d97099feSJason Gunthorpe /** 345d97099feSJason Gunthorpe * rdma_replace_ah_attr - Replace valid ah_attr with new new one. 346d97099feSJason Gunthorpe * @old: Pointer to existing ah_attr which needs to be replaced. 347d97099feSJason Gunthorpe * old is assumed to be valid or zero'd 348d97099feSJason Gunthorpe * @new: Pointer to the new ah_attr. 349d97099feSJason Gunthorpe * 350d97099feSJason Gunthorpe * rdma_replace_ah_attr() first releases any reference in the old ah_attr if 351d97099feSJason Gunthorpe * old the ah_attr is valid; after that it copies the new attribute and holds 352d97099feSJason Gunthorpe * the reference to the replaced ah_attr. 353d97099feSJason Gunthorpe */ 354d97099feSJason Gunthorpe void rdma_replace_ah_attr(struct rdma_ah_attr *old, 355d97099feSJason Gunthorpe const struct rdma_ah_attr *new) 356d97099feSJason Gunthorpe { 357d97099feSJason Gunthorpe rdma_destroy_ah_attr(old); 358d97099feSJason Gunthorpe *old = *new; 359d97099feSJason Gunthorpe if (old->grh.sgid_attr) 360d97099feSJason Gunthorpe rdma_hold_gid_attr(old->grh.sgid_attr); 361d97099feSJason Gunthorpe } 362d97099feSJason Gunthorpe EXPORT_SYMBOL(rdma_replace_ah_attr); 363d97099feSJason Gunthorpe 364d97099feSJason Gunthorpe /** 365d97099feSJason Gunthorpe * rdma_move_ah_attr - Move ah_attr pointed by source to destination. 366d97099feSJason Gunthorpe * @dest: Pointer to destination ah_attr to copy to. 367d97099feSJason Gunthorpe * dest is assumed to be valid or zero'd 368d97099feSJason Gunthorpe * @src: Pointer to the new ah_attr. 369d97099feSJason Gunthorpe * 370d97099feSJason Gunthorpe * rdma_move_ah_attr() first releases any reference in the destination ah_attr 371d97099feSJason Gunthorpe * if it is valid. This also transfers ownership of internal references from 372d97099feSJason Gunthorpe * src to dest, making src invalid in the process. No new reference of the src 373d97099feSJason Gunthorpe * ah_attr is taken. 374d97099feSJason Gunthorpe */ 375d97099feSJason Gunthorpe void rdma_move_ah_attr(struct rdma_ah_attr *dest, struct rdma_ah_attr *src) 376d97099feSJason Gunthorpe { 377d97099feSJason Gunthorpe rdma_destroy_ah_attr(dest); 378d97099feSJason Gunthorpe *dest = *src; 379d97099feSJason Gunthorpe src->grh.sgid_attr = NULL; 380d97099feSJason Gunthorpe } 381d97099feSJason Gunthorpe EXPORT_SYMBOL(rdma_move_ah_attr); 382d97099feSJason Gunthorpe 3838d9ec9adSJason Gunthorpe /* 3848d9ec9adSJason Gunthorpe * Validate that the rdma_ah_attr is valid for the device before passing it 3858d9ec9adSJason Gunthorpe * off to the driver. 3868d9ec9adSJason Gunthorpe */ 3878d9ec9adSJason Gunthorpe static int rdma_check_ah_attr(struct ib_device *device, 3888d9ec9adSJason Gunthorpe struct rdma_ah_attr *ah_attr) 3898d9ec9adSJason Gunthorpe { 3908d9ec9adSJason Gunthorpe if (!rdma_is_port_valid(device, ah_attr->port_num)) 3918d9ec9adSJason Gunthorpe return -EINVAL; 3928d9ec9adSJason Gunthorpe 3938d9ec9adSJason Gunthorpe if (ah_attr->type == RDMA_AH_ATTR_TYPE_ROCE && 3948d9ec9adSJason Gunthorpe !(ah_attr->ah_flags & IB_AH_GRH)) 3958d9ec9adSJason Gunthorpe return -EINVAL; 3968d9ec9adSJason Gunthorpe 3978d9ec9adSJason Gunthorpe if (ah_attr->grh.sgid_attr) { 3988d9ec9adSJason Gunthorpe /* 3998d9ec9adSJason Gunthorpe * Make sure the passed sgid_attr is consistent with the 4008d9ec9adSJason Gunthorpe * parameters 4018d9ec9adSJason Gunthorpe */ 4028d9ec9adSJason Gunthorpe if (ah_attr->grh.sgid_attr->index != ah_attr->grh.sgid_index || 4038d9ec9adSJason Gunthorpe ah_attr->grh.sgid_attr->port_num != ah_attr->port_num) 4048d9ec9adSJason Gunthorpe return -EINVAL; 4058d9ec9adSJason Gunthorpe } 4068d9ec9adSJason Gunthorpe return 0; 4078d9ec9adSJason Gunthorpe } 4088d9ec9adSJason Gunthorpe 4098d9ec9adSJason Gunthorpe /* 4108d9ec9adSJason Gunthorpe * If the ah requires a GRH then ensure that sgid_attr pointer is filled in. 4118d9ec9adSJason Gunthorpe * On success the caller is responsible to call rdma_unfill_sgid_attr(). 4128d9ec9adSJason Gunthorpe */ 4138d9ec9adSJason Gunthorpe static int rdma_fill_sgid_attr(struct ib_device *device, 4148d9ec9adSJason Gunthorpe struct rdma_ah_attr *ah_attr, 4158d9ec9adSJason Gunthorpe const struct ib_gid_attr **old_sgid_attr) 4168d9ec9adSJason Gunthorpe { 4178d9ec9adSJason Gunthorpe const struct ib_gid_attr *sgid_attr; 4188d9ec9adSJason Gunthorpe struct ib_global_route *grh; 4198d9ec9adSJason Gunthorpe int ret; 4208d9ec9adSJason Gunthorpe 4218d9ec9adSJason Gunthorpe *old_sgid_attr = ah_attr->grh.sgid_attr; 4228d9ec9adSJason Gunthorpe 4238d9ec9adSJason Gunthorpe ret = rdma_check_ah_attr(device, ah_attr); 4248d9ec9adSJason Gunthorpe if (ret) 4258d9ec9adSJason Gunthorpe return ret; 4268d9ec9adSJason Gunthorpe 4278d9ec9adSJason Gunthorpe if (!(ah_attr->ah_flags & IB_AH_GRH)) 4288d9ec9adSJason Gunthorpe return 0; 4298d9ec9adSJason Gunthorpe 4308d9ec9adSJason Gunthorpe grh = rdma_ah_retrieve_grh(ah_attr); 4318d9ec9adSJason Gunthorpe if (grh->sgid_attr) 4328d9ec9adSJason Gunthorpe return 0; 4338d9ec9adSJason Gunthorpe 4348d9ec9adSJason Gunthorpe sgid_attr = 4358d9ec9adSJason Gunthorpe rdma_get_gid_attr(device, ah_attr->port_num, grh->sgid_index); 4368d9ec9adSJason Gunthorpe if (IS_ERR(sgid_attr)) 4378d9ec9adSJason Gunthorpe return PTR_ERR(sgid_attr); 4388d9ec9adSJason Gunthorpe 4398d9ec9adSJason Gunthorpe /* Move ownerhip of the kref into the ah_attr */ 4408d9ec9adSJason Gunthorpe grh->sgid_attr = sgid_attr; 4418d9ec9adSJason Gunthorpe return 0; 4428d9ec9adSJason Gunthorpe } 4438d9ec9adSJason Gunthorpe 4448d9ec9adSJason Gunthorpe static void rdma_unfill_sgid_attr(struct rdma_ah_attr *ah_attr, 4458d9ec9adSJason Gunthorpe const struct ib_gid_attr *old_sgid_attr) 4468d9ec9adSJason Gunthorpe { 4478d9ec9adSJason Gunthorpe /* 4488d9ec9adSJason Gunthorpe * Fill didn't change anything, the caller retains ownership of 4498d9ec9adSJason Gunthorpe * whatever it passed 4508d9ec9adSJason Gunthorpe */ 4518d9ec9adSJason Gunthorpe if (ah_attr->grh.sgid_attr == old_sgid_attr) 4528d9ec9adSJason Gunthorpe return; 4538d9ec9adSJason Gunthorpe 4548d9ec9adSJason Gunthorpe /* 4558d9ec9adSJason Gunthorpe * Otherwise, we need to undo what rdma_fill_sgid_attr so the caller 4568d9ec9adSJason Gunthorpe * doesn't see any change in the rdma_ah_attr. If we get here 4578d9ec9adSJason Gunthorpe * old_sgid_attr is NULL. 4588d9ec9adSJason Gunthorpe */ 4598d9ec9adSJason Gunthorpe rdma_destroy_ah_attr(ah_attr); 4608d9ec9adSJason Gunthorpe } 4618d9ec9adSJason Gunthorpe 4621a1f460fSJason Gunthorpe static const struct ib_gid_attr * 4631a1f460fSJason Gunthorpe rdma_update_sgid_attr(struct rdma_ah_attr *ah_attr, 4641a1f460fSJason Gunthorpe const struct ib_gid_attr *old_attr) 4651a1f460fSJason Gunthorpe { 4661a1f460fSJason Gunthorpe if (old_attr) 4671a1f460fSJason Gunthorpe rdma_put_gid_attr(old_attr); 4681a1f460fSJason Gunthorpe if (ah_attr->ah_flags & IB_AH_GRH) { 4691a1f460fSJason Gunthorpe rdma_hold_gid_attr(ah_attr->grh.sgid_attr); 4701a1f460fSJason Gunthorpe return ah_attr->grh.sgid_attr; 4711a1f460fSJason Gunthorpe } 4721a1f460fSJason Gunthorpe return NULL; 4731a1f460fSJason Gunthorpe } 4741a1f460fSJason Gunthorpe 4755cda6587SParav Pandit static struct ib_ah *_rdma_create_ah(struct ib_pd *pd, 4765cda6587SParav Pandit struct rdma_ah_attr *ah_attr, 4775cda6587SParav Pandit struct ib_udata *udata) 4781da177e4SLinus Torvalds { 4791da177e4SLinus Torvalds struct ib_ah *ah; 4801da177e4SLinus Torvalds 4815cda6587SParav Pandit ah = pd->device->create_ah(pd, ah_attr, udata); 4821da177e4SLinus Torvalds 4831da177e4SLinus Torvalds if (!IS_ERR(ah)) { 4841da177e4SLinus Torvalds ah->device = pd->device; 4851da177e4SLinus Torvalds ah->pd = pd; 486b5e81bf5SRoland Dreier ah->uobject = NULL; 48744c58487SDasaratharaman Chandramouli ah->type = ah_attr->type; 4881a1f460fSJason Gunthorpe ah->sgid_attr = rdma_update_sgid_attr(ah_attr, NULL); 4891a1f460fSJason Gunthorpe 4901da177e4SLinus Torvalds atomic_inc(&pd->usecnt); 4911da177e4SLinus Torvalds } 4921da177e4SLinus Torvalds 4931da177e4SLinus Torvalds return ah; 4941da177e4SLinus Torvalds } 4955cda6587SParav Pandit 4968d9ec9adSJason Gunthorpe /** 4978d9ec9adSJason Gunthorpe * rdma_create_ah - Creates an address handle for the 4988d9ec9adSJason Gunthorpe * given address vector. 4998d9ec9adSJason Gunthorpe * @pd: The protection domain associated with the address handle. 5008d9ec9adSJason Gunthorpe * @ah_attr: The attributes of the address vector. 5018d9ec9adSJason Gunthorpe * 5028d9ec9adSJason Gunthorpe * It returns 0 on success and returns appropriate error code on error. 5038d9ec9adSJason Gunthorpe * The address handle is used to reference a local or global destination 5048d9ec9adSJason Gunthorpe * in all UD QP post sends. 5058d9ec9adSJason Gunthorpe */ 5065cda6587SParav Pandit struct ib_ah *rdma_create_ah(struct ib_pd *pd, struct rdma_ah_attr *ah_attr) 5075cda6587SParav Pandit { 5088d9ec9adSJason Gunthorpe const struct ib_gid_attr *old_sgid_attr; 5098d9ec9adSJason Gunthorpe struct ib_ah *ah; 5108d9ec9adSJason Gunthorpe int ret; 5118d9ec9adSJason Gunthorpe 5128d9ec9adSJason Gunthorpe ret = rdma_fill_sgid_attr(pd->device, ah_attr, &old_sgid_attr); 5138d9ec9adSJason Gunthorpe if (ret) 5148d9ec9adSJason Gunthorpe return ERR_PTR(ret); 5158d9ec9adSJason Gunthorpe 5168d9ec9adSJason Gunthorpe ah = _rdma_create_ah(pd, ah_attr, NULL); 5178d9ec9adSJason Gunthorpe 5188d9ec9adSJason Gunthorpe rdma_unfill_sgid_attr(ah_attr, old_sgid_attr); 5198d9ec9adSJason Gunthorpe return ah; 5205cda6587SParav Pandit } 5210a18cfe4SDasaratharaman Chandramouli EXPORT_SYMBOL(rdma_create_ah); 5221da177e4SLinus Torvalds 5235cda6587SParav Pandit /** 5245cda6587SParav Pandit * rdma_create_user_ah - Creates an address handle for the 5255cda6587SParav Pandit * given address vector. 5265cda6587SParav Pandit * It resolves destination mac address for ah attribute of RoCE type. 5275cda6587SParav Pandit * @pd: The protection domain associated with the address handle. 5285cda6587SParav Pandit * @ah_attr: The attributes of the address vector. 5295cda6587SParav Pandit * @udata: pointer to user's input output buffer information need by 5305cda6587SParav Pandit * provider driver. 5315cda6587SParav Pandit * 5325cda6587SParav Pandit * It returns 0 on success and returns appropriate error code on error. 5335cda6587SParav Pandit * The address handle is used to reference a local or global destination 5345cda6587SParav Pandit * in all UD QP post sends. 5355cda6587SParav Pandit */ 5365cda6587SParav Pandit struct ib_ah *rdma_create_user_ah(struct ib_pd *pd, 5375cda6587SParav Pandit struct rdma_ah_attr *ah_attr, 5385cda6587SParav Pandit struct ib_udata *udata) 5395cda6587SParav Pandit { 5408d9ec9adSJason Gunthorpe const struct ib_gid_attr *old_sgid_attr; 5418d9ec9adSJason Gunthorpe struct ib_ah *ah; 5425cda6587SParav Pandit int err; 5435cda6587SParav Pandit 5448d9ec9adSJason Gunthorpe err = rdma_fill_sgid_attr(pd->device, ah_attr, &old_sgid_attr); 5458d9ec9adSJason Gunthorpe if (err) 5468d9ec9adSJason Gunthorpe return ERR_PTR(err); 5478d9ec9adSJason Gunthorpe 5485cda6587SParav Pandit if (ah_attr->type == RDMA_AH_ATTR_TYPE_ROCE) { 5495cda6587SParav Pandit err = ib_resolve_eth_dmac(pd->device, ah_attr); 5508d9ec9adSJason Gunthorpe if (err) { 5518d9ec9adSJason Gunthorpe ah = ERR_PTR(err); 5528d9ec9adSJason Gunthorpe goto out; 5538d9ec9adSJason Gunthorpe } 5545cda6587SParav Pandit } 5555cda6587SParav Pandit 5568d9ec9adSJason Gunthorpe ah = _rdma_create_ah(pd, ah_attr, udata); 5578d9ec9adSJason Gunthorpe 5588d9ec9adSJason Gunthorpe out: 5598d9ec9adSJason Gunthorpe rdma_unfill_sgid_attr(ah_attr, old_sgid_attr); 5608d9ec9adSJason Gunthorpe return ah; 5615cda6587SParav Pandit } 5625cda6587SParav Pandit EXPORT_SYMBOL(rdma_create_user_ah); 5635cda6587SParav Pandit 564850d8fd7SMoni Shoua int ib_get_rdma_header_version(const union rdma_network_hdr *hdr) 565c865f246SSomnath Kotur { 566c865f246SSomnath Kotur const struct iphdr *ip4h = (struct iphdr *)&hdr->roce4grh; 567c865f246SSomnath Kotur struct iphdr ip4h_checked; 568c865f246SSomnath Kotur const struct ipv6hdr *ip6h = (struct ipv6hdr *)&hdr->ibgrh; 569c865f246SSomnath Kotur 570c865f246SSomnath Kotur /* If it's IPv6, the version must be 6, otherwise, the first 571c865f246SSomnath Kotur * 20 bytes (before the IPv4 header) are garbled. 572c865f246SSomnath Kotur */ 573c865f246SSomnath Kotur if (ip6h->version != 6) 574c865f246SSomnath Kotur return (ip4h->version == 4) ? 4 : 0; 575c865f246SSomnath Kotur /* version may be 6 or 4 because the first 20 bytes could be garbled */ 576c865f246SSomnath Kotur 577c865f246SSomnath Kotur /* RoCE v2 requires no options, thus header length 578c865f246SSomnath Kotur * must be 5 words 579c865f246SSomnath Kotur */ 580c865f246SSomnath Kotur if (ip4h->ihl != 5) 581c865f246SSomnath Kotur return 6; 582c865f246SSomnath Kotur 583c865f246SSomnath Kotur /* Verify checksum. 584c865f246SSomnath Kotur * We can't write on scattered buffers so we need to copy to 585c865f246SSomnath Kotur * temp buffer. 586c865f246SSomnath Kotur */ 587c865f246SSomnath Kotur memcpy(&ip4h_checked, ip4h, sizeof(ip4h_checked)); 588c865f246SSomnath Kotur ip4h_checked.check = 0; 589c865f246SSomnath Kotur ip4h_checked.check = ip_fast_csum((u8 *)&ip4h_checked, 5); 590c865f246SSomnath Kotur /* if IPv4 header checksum is OK, believe it */ 591c865f246SSomnath Kotur if (ip4h->check == ip4h_checked.check) 592c865f246SSomnath Kotur return 4; 593c865f246SSomnath Kotur return 6; 594c865f246SSomnath Kotur } 595850d8fd7SMoni Shoua EXPORT_SYMBOL(ib_get_rdma_header_version); 596c865f246SSomnath Kotur 597c865f246SSomnath Kotur static enum rdma_network_type ib_get_net_type_by_grh(struct ib_device *device, 598c865f246SSomnath Kotur u8 port_num, 599c865f246SSomnath Kotur const struct ib_grh *grh) 600c865f246SSomnath Kotur { 601c865f246SSomnath Kotur int grh_version; 602c865f246SSomnath Kotur 603c865f246SSomnath Kotur if (rdma_protocol_ib(device, port_num)) 604c865f246SSomnath Kotur return RDMA_NETWORK_IB; 605c865f246SSomnath Kotur 606850d8fd7SMoni Shoua grh_version = ib_get_rdma_header_version((union rdma_network_hdr *)grh); 607c865f246SSomnath Kotur 608c865f246SSomnath Kotur if (grh_version == 4) 609c865f246SSomnath Kotur return RDMA_NETWORK_IPV4; 610c865f246SSomnath Kotur 611c865f246SSomnath Kotur if (grh->next_hdr == IPPROTO_UDP) 612c865f246SSomnath Kotur return RDMA_NETWORK_IPV6; 613c865f246SSomnath Kotur 614c865f246SSomnath Kotur return RDMA_NETWORK_ROCE_V1; 615c865f246SSomnath Kotur } 616c865f246SSomnath Kotur 617dbf727deSMatan Barak struct find_gid_index_context { 618dbf727deSMatan Barak u16 vlan_id; 619c865f246SSomnath Kotur enum ib_gid_type gid_type; 620dbf727deSMatan Barak }; 621dbf727deSMatan Barak 622dbf727deSMatan Barak static bool find_gid_index(const union ib_gid *gid, 623dbf727deSMatan Barak const struct ib_gid_attr *gid_attr, 624dbf727deSMatan Barak void *context) 625dbf727deSMatan Barak { 626b0dd0d33SParav Pandit struct find_gid_index_context *ctx = context; 627dbf727deSMatan Barak 628c865f246SSomnath Kotur if (ctx->gid_type != gid_attr->gid_type) 629c865f246SSomnath Kotur return false; 630c865f246SSomnath Kotur 631dbf727deSMatan Barak if ((!!(ctx->vlan_id != 0xffff) == !is_vlan_dev(gid_attr->ndev)) || 632dbf727deSMatan Barak (is_vlan_dev(gid_attr->ndev) && 633dbf727deSMatan Barak vlan_dev_vlan_id(gid_attr->ndev) != ctx->vlan_id)) 634dbf727deSMatan Barak return false; 635dbf727deSMatan Barak 636dbf727deSMatan Barak return true; 637dbf727deSMatan Barak } 638dbf727deSMatan Barak 639dbf727deSMatan Barak static int get_sgid_index_from_eth(struct ib_device *device, u8 port_num, 640dbf727deSMatan Barak u16 vlan_id, const union ib_gid *sgid, 641c865f246SSomnath Kotur enum ib_gid_type gid_type, 642dbf727deSMatan Barak u16 *gid_index) 643dbf727deSMatan Barak { 644c865f246SSomnath Kotur struct find_gid_index_context context = {.vlan_id = vlan_id, 645c865f246SSomnath Kotur .gid_type = gid_type}; 646dbf727deSMatan Barak 647dbf727deSMatan Barak return ib_find_gid_by_filter(device, sgid, port_num, find_gid_index, 648dbf727deSMatan Barak &context, gid_index); 649dbf727deSMatan Barak } 650dbf727deSMatan Barak 651850d8fd7SMoni Shoua int ib_get_gids_from_rdma_hdr(const union rdma_network_hdr *hdr, 652c865f246SSomnath Kotur enum rdma_network_type net_type, 653c865f246SSomnath Kotur union ib_gid *sgid, union ib_gid *dgid) 654c865f246SSomnath Kotur { 655c865f246SSomnath Kotur struct sockaddr_in src_in; 656c865f246SSomnath Kotur struct sockaddr_in dst_in; 657c865f246SSomnath Kotur __be32 src_saddr, dst_saddr; 658c865f246SSomnath Kotur 659c865f246SSomnath Kotur if (!sgid || !dgid) 660c865f246SSomnath Kotur return -EINVAL; 661c865f246SSomnath Kotur 662c865f246SSomnath Kotur if (net_type == RDMA_NETWORK_IPV4) { 663c865f246SSomnath Kotur memcpy(&src_in.sin_addr.s_addr, 664c865f246SSomnath Kotur &hdr->roce4grh.saddr, 4); 665c865f246SSomnath Kotur memcpy(&dst_in.sin_addr.s_addr, 666c865f246SSomnath Kotur &hdr->roce4grh.daddr, 4); 667c865f246SSomnath Kotur src_saddr = src_in.sin_addr.s_addr; 668c865f246SSomnath Kotur dst_saddr = dst_in.sin_addr.s_addr; 669c865f246SSomnath Kotur ipv6_addr_set_v4mapped(src_saddr, 670c865f246SSomnath Kotur (struct in6_addr *)sgid); 671c865f246SSomnath Kotur ipv6_addr_set_v4mapped(dst_saddr, 672c865f246SSomnath Kotur (struct in6_addr *)dgid); 673c865f246SSomnath Kotur return 0; 674c865f246SSomnath Kotur } else if (net_type == RDMA_NETWORK_IPV6 || 675c865f246SSomnath Kotur net_type == RDMA_NETWORK_IB) { 676c865f246SSomnath Kotur *dgid = hdr->ibgrh.dgid; 677c865f246SSomnath Kotur *sgid = hdr->ibgrh.sgid; 678c865f246SSomnath Kotur return 0; 679c865f246SSomnath Kotur } else { 680c865f246SSomnath Kotur return -EINVAL; 681c865f246SSomnath Kotur } 682c865f246SSomnath Kotur } 683850d8fd7SMoni Shoua EXPORT_SYMBOL(ib_get_gids_from_rdma_hdr); 684c865f246SSomnath Kotur 6851060f865SParav Pandit /* Resolve destination mac address and hop limit for unicast destination 6861060f865SParav Pandit * GID entry, considering the source GID entry as well. 6871060f865SParav Pandit * ah_attribute must have have valid port_num, sgid_index. 6881060f865SParav Pandit */ 6891060f865SParav Pandit static int ib_resolve_unicast_gid_dmac(struct ib_device *device, 6901060f865SParav Pandit struct rdma_ah_attr *ah_attr) 6911060f865SParav Pandit { 6921060f865SParav Pandit struct ib_gid_attr sgid_attr; 6931060f865SParav Pandit struct ib_global_route *grh; 6941060f865SParav Pandit int hop_limit = 0xff; 6951060f865SParav Pandit union ib_gid sgid; 6961060f865SParav Pandit int ret; 6971060f865SParav Pandit 6981060f865SParav Pandit grh = rdma_ah_retrieve_grh(ah_attr); 6991060f865SParav Pandit 7001dfce294SParav Pandit ret = ib_get_cached_gid(device, rdma_ah_get_port_num(ah_attr), 7011dfce294SParav Pandit grh->sgid_index, &sgid, &sgid_attr); 7021060f865SParav Pandit if (ret || !sgid_attr.ndev) { 7031060f865SParav Pandit if (!ret) 7041060f865SParav Pandit ret = -ENXIO; 7051060f865SParav Pandit return ret; 7061060f865SParav Pandit } 7071060f865SParav Pandit 70856d0a7d9SParav Pandit /* If destination is link local and source GID is RoCEv1, 70956d0a7d9SParav Pandit * IP stack is not used. 71056d0a7d9SParav Pandit */ 71156d0a7d9SParav Pandit if (rdma_link_local_addr((struct in6_addr *)grh->dgid.raw) && 71256d0a7d9SParav Pandit sgid_attr.gid_type == IB_GID_TYPE_ROCE) { 71356d0a7d9SParav Pandit rdma_get_ll_mac((struct in6_addr *)grh->dgid.raw, 71456d0a7d9SParav Pandit ah_attr->roce.dmac); 71556d0a7d9SParav Pandit goto done; 71656d0a7d9SParav Pandit } 71756d0a7d9SParav Pandit 7181060f865SParav Pandit ret = rdma_addr_find_l2_eth_by_grh(&sgid, &grh->dgid, 7191060f865SParav Pandit ah_attr->roce.dmac, 7201060f865SParav Pandit sgid_attr.ndev, &hop_limit); 72156d0a7d9SParav Pandit done: 7221060f865SParav Pandit dev_put(sgid_attr.ndev); 7231060f865SParav Pandit 7241060f865SParav Pandit grh->hop_limit = hop_limit; 7251060f865SParav Pandit return ret; 7261060f865SParav Pandit } 7271060f865SParav Pandit 72828b5b3a2SGustavo A. R. Silva /* 729f6bdb142SParav Pandit * This function initializes address handle attributes from the incoming packet. 73028b5b3a2SGustavo A. R. Silva * Incoming packet has dgid of the receiver node on which this code is 73128b5b3a2SGustavo A. R. Silva * getting executed and, sgid contains the GID of the sender. 73228b5b3a2SGustavo A. R. Silva * 73328b5b3a2SGustavo A. R. Silva * When resolving mac address of destination, the arrived dgid is used 73428b5b3a2SGustavo A. R. Silva * as sgid and, sgid is used as dgid because sgid contains destinations 73528b5b3a2SGustavo A. R. Silva * GID whom to respond to. 73628b5b3a2SGustavo A. R. Silva * 73728b5b3a2SGustavo A. R. Silva */ 738f6bdb142SParav Pandit int ib_init_ah_attr_from_wc(struct ib_device *device, u8 port_num, 73973cdaaeeSIra Weiny const struct ib_wc *wc, const struct ib_grh *grh, 74090898850SDasaratharaman Chandramouli struct rdma_ah_attr *ah_attr) 741513789edSHal Rosenstock { 742513789edSHal Rosenstock u32 flow_class; 743513789edSHal Rosenstock u16 gid_index; 744513789edSHal Rosenstock int ret; 745c865f246SSomnath Kotur enum rdma_network_type net_type = RDMA_NETWORK_IB; 746c865f246SSomnath Kotur enum ib_gid_type gid_type = IB_GID_TYPE_IB; 747c3efe750SMatan Barak int hoplimit = 0xff; 748c865f246SSomnath Kotur union ib_gid dgid; 749c865f246SSomnath Kotur union ib_gid sgid; 750513789edSHal Rosenstock 75179364227SRoland Dreier might_sleep(); 75279364227SRoland Dreier 7534e00d694SSean Hefty memset(ah_attr, 0, sizeof *ah_attr); 75444c58487SDasaratharaman Chandramouli ah_attr->type = rdma_ah_find_type(device, port_num); 755227128fcSMichael Wang if (rdma_cap_eth_ah(device, port_num)) { 756c865f246SSomnath Kotur if (wc->wc_flags & IB_WC_WITH_NETWORK_HDR_TYPE) 757c865f246SSomnath Kotur net_type = wc->network_hdr_type; 758c865f246SSomnath Kotur else 759c865f246SSomnath Kotur net_type = ib_get_net_type_by_grh(device, port_num, grh); 760c865f246SSomnath Kotur gid_type = ib_network_to_gid_type(net_type); 761c865f246SSomnath Kotur } 762850d8fd7SMoni Shoua ret = ib_get_gids_from_rdma_hdr((union rdma_network_hdr *)grh, net_type, 763c865f246SSomnath Kotur &sgid, &dgid); 764c865f246SSomnath Kotur if (ret) 765c865f246SSomnath Kotur return ret; 766c865f246SSomnath Kotur 7671060f865SParav Pandit rdma_ah_set_sl(ah_attr, wc->sl); 7681060f865SParav Pandit rdma_ah_set_port_num(ah_attr, port_num); 7691060f865SParav Pandit 770c865f246SSomnath Kotur if (rdma_protocol_roce(device, port_num)) { 771dbf727deSMatan Barak u16 vlan_id = wc->wc_flags & IB_WC_WITH_VLAN ? 772dbf727deSMatan Barak wc->vlan_id : 0xffff; 773dbf727deSMatan Barak 774dd5f03beSMatan Barak if (!(wc->wc_flags & IB_WC_GRH)) 775dd5f03beSMatan Barak return -EPROTOTYPE; 776dd5f03beSMatan Barak 7771060f865SParav Pandit ret = get_sgid_index_from_eth(device, port_num, 7781060f865SParav Pandit vlan_id, &dgid, 7791060f865SParav Pandit gid_type, &gid_index); 78020029832SMatan Barak if (ret) 78120029832SMatan Barak return ret; 78220029832SMatan Barak 7831060f865SParav Pandit flow_class = be32_to_cpu(grh->version_tclass_flow); 7841060f865SParav Pandit rdma_ah_set_grh(ah_attr, &sgid, 7851060f865SParav Pandit flow_class & 0xFFFFF, 7861060f865SParav Pandit (u8)gid_index, hoplimit, 7871060f865SParav Pandit (flow_class >> 20) & 0xFF); 7881060f865SParav Pandit return ib_resolve_unicast_gid_dmac(device, ah_attr); 7891060f865SParav Pandit } else { 790d8966fcdSDasaratharaman Chandramouli rdma_ah_set_dlid(ah_attr, wc->slid); 791d8966fcdSDasaratharaman Chandramouli rdma_ah_set_path_bits(ah_attr, wc->dlid_path_bits); 792513789edSHal Rosenstock 793513789edSHal Rosenstock if (wc->wc_flags & IB_WC_GRH) { 794b3556005SEli Cohen if (dgid.global.interface_id != cpu_to_be64(IB_SA_WELL_KNOWN_GUID)) { 795c865f246SSomnath Kotur ret = ib_find_cached_gid_by_port(device, &dgid, 796b39ffa1dSMatan Barak IB_GID_TYPE_IB, 797dbf727deSMatan Barak port_num, NULL, 798dbf727deSMatan Barak &gid_index); 799513789edSHal Rosenstock if (ret) 8004e00d694SSean Hefty return ret; 801b3556005SEli Cohen } else { 802b3556005SEli Cohen gid_index = 0; 803b3556005SEli Cohen } 804513789edSHal Rosenstock 805497677abSHal Rosenstock flow_class = be32_to_cpu(grh->version_tclass_flow); 806d8966fcdSDasaratharaman Chandramouli rdma_ah_set_grh(ah_attr, &sgid, 807d8966fcdSDasaratharaman Chandramouli flow_class & 0xFFFFF, 808d8966fcdSDasaratharaman Chandramouli (u8)gid_index, hoplimit, 809d8966fcdSDasaratharaman Chandramouli (flow_class >> 20) & 0xFF); 810513789edSHal Rosenstock } 8114e00d694SSean Hefty return 0; 8124e00d694SSean Hefty } 8131060f865SParav Pandit } 814f6bdb142SParav Pandit EXPORT_SYMBOL(ib_init_ah_attr_from_wc); 8154e00d694SSean Hefty 8168d9ec9adSJason Gunthorpe /** 8178d9ec9adSJason Gunthorpe * rdma_move_grh_sgid_attr - Sets the sgid attribute of GRH, taking ownership 8188d9ec9adSJason Gunthorpe * of the reference 8198d9ec9adSJason Gunthorpe * 8208d9ec9adSJason Gunthorpe * @attr: Pointer to AH attribute structure 8218d9ec9adSJason Gunthorpe * @dgid: Destination GID 8228d9ec9adSJason Gunthorpe * @flow_label: Flow label 8238d9ec9adSJason Gunthorpe * @hop_limit: Hop limit 8248d9ec9adSJason Gunthorpe * @traffic_class: traffic class 8258d9ec9adSJason Gunthorpe * @sgid_attr: Pointer to SGID attribute 8268d9ec9adSJason Gunthorpe * 8278d9ec9adSJason Gunthorpe * This takes ownership of the sgid_attr reference. The caller must ensure 8288d9ec9adSJason Gunthorpe * rdma_destroy_ah_attr() is called before destroying the rdma_ah_attr after 8298d9ec9adSJason Gunthorpe * calling this function. 8308d9ec9adSJason Gunthorpe */ 8318d9ec9adSJason Gunthorpe void rdma_move_grh_sgid_attr(struct rdma_ah_attr *attr, union ib_gid *dgid, 8328d9ec9adSJason Gunthorpe u32 flow_label, u8 hop_limit, u8 traffic_class, 8338d9ec9adSJason Gunthorpe const struct ib_gid_attr *sgid_attr) 8348d9ec9adSJason Gunthorpe { 8358d9ec9adSJason Gunthorpe rdma_ah_set_grh(attr, dgid, flow_label, sgid_attr->index, hop_limit, 8368d9ec9adSJason Gunthorpe traffic_class); 8378d9ec9adSJason Gunthorpe attr->grh.sgid_attr = sgid_attr; 8388d9ec9adSJason Gunthorpe } 8398d9ec9adSJason Gunthorpe EXPORT_SYMBOL(rdma_move_grh_sgid_attr); 8408d9ec9adSJason Gunthorpe 8418d9ec9adSJason Gunthorpe /** 8428d9ec9adSJason Gunthorpe * rdma_destroy_ah_attr - Release reference to SGID attribute of 8438d9ec9adSJason Gunthorpe * ah attribute. 8448d9ec9adSJason Gunthorpe * @ah_attr: Pointer to ah attribute 8458d9ec9adSJason Gunthorpe * 8468d9ec9adSJason Gunthorpe * Release reference to the SGID attribute of the ah attribute if it is 8478d9ec9adSJason Gunthorpe * non NULL. It is safe to call this multiple times, and safe to call it on 8488d9ec9adSJason Gunthorpe * a zero initialized ah_attr. 8498d9ec9adSJason Gunthorpe */ 8508d9ec9adSJason Gunthorpe void rdma_destroy_ah_attr(struct rdma_ah_attr *ah_attr) 8518d9ec9adSJason Gunthorpe { 8528d9ec9adSJason Gunthorpe if (ah_attr->grh.sgid_attr) { 8538d9ec9adSJason Gunthorpe rdma_put_gid_attr(ah_attr->grh.sgid_attr); 8548d9ec9adSJason Gunthorpe ah_attr->grh.sgid_attr = NULL; 8558d9ec9adSJason Gunthorpe } 8568d9ec9adSJason Gunthorpe } 8578d9ec9adSJason Gunthorpe EXPORT_SYMBOL(rdma_destroy_ah_attr); 8588d9ec9adSJason Gunthorpe 85973cdaaeeSIra Weiny struct ib_ah *ib_create_ah_from_wc(struct ib_pd *pd, const struct ib_wc *wc, 86073cdaaeeSIra Weiny const struct ib_grh *grh, u8 port_num) 8614e00d694SSean Hefty { 86290898850SDasaratharaman Chandramouli struct rdma_ah_attr ah_attr; 8634e00d694SSean Hefty int ret; 8644e00d694SSean Hefty 865f6bdb142SParav Pandit ret = ib_init_ah_attr_from_wc(pd->device, port_num, wc, grh, &ah_attr); 8664e00d694SSean Hefty if (ret) 8674e00d694SSean Hefty return ERR_PTR(ret); 868513789edSHal Rosenstock 8690a18cfe4SDasaratharaman Chandramouli return rdma_create_ah(pd, &ah_attr); 870513789edSHal Rosenstock } 871513789edSHal Rosenstock EXPORT_SYMBOL(ib_create_ah_from_wc); 872513789edSHal Rosenstock 87367b985b6SDasaratharaman Chandramouli int rdma_modify_ah(struct ib_ah *ah, struct rdma_ah_attr *ah_attr) 8741da177e4SLinus Torvalds { 8758d9ec9adSJason Gunthorpe const struct ib_gid_attr *old_sgid_attr; 8768d9ec9adSJason Gunthorpe int ret; 8778d9ec9adSJason Gunthorpe 87844c58487SDasaratharaman Chandramouli if (ah->type != ah_attr->type) 87944c58487SDasaratharaman Chandramouli return -EINVAL; 88044c58487SDasaratharaman Chandramouli 8818d9ec9adSJason Gunthorpe ret = rdma_fill_sgid_attr(ah->device, ah_attr, &old_sgid_attr); 8828d9ec9adSJason Gunthorpe if (ret) 8838d9ec9adSJason Gunthorpe return ret; 8848d9ec9adSJason Gunthorpe 8858d9ec9adSJason Gunthorpe ret = ah->device->modify_ah ? 8861da177e4SLinus Torvalds ah->device->modify_ah(ah, ah_attr) : 88787915bf8SLeon Romanovsky -EOPNOTSUPP; 8888d9ec9adSJason Gunthorpe 8891a1f460fSJason Gunthorpe ah->sgid_attr = rdma_update_sgid_attr(ah_attr, ah->sgid_attr); 8908d9ec9adSJason Gunthorpe rdma_unfill_sgid_attr(ah_attr, old_sgid_attr); 8918d9ec9adSJason Gunthorpe return ret; 8921da177e4SLinus Torvalds } 89367b985b6SDasaratharaman Chandramouli EXPORT_SYMBOL(rdma_modify_ah); 8941da177e4SLinus Torvalds 895bfbfd661SDasaratharaman Chandramouli int rdma_query_ah(struct ib_ah *ah, struct rdma_ah_attr *ah_attr) 8961da177e4SLinus Torvalds { 8978d9ec9adSJason Gunthorpe ah_attr->grh.sgid_attr = NULL; 8988d9ec9adSJason Gunthorpe 8991da177e4SLinus Torvalds return ah->device->query_ah ? 9001da177e4SLinus Torvalds ah->device->query_ah(ah, ah_attr) : 90187915bf8SLeon Romanovsky -EOPNOTSUPP; 9021da177e4SLinus Torvalds } 903bfbfd661SDasaratharaman Chandramouli EXPORT_SYMBOL(rdma_query_ah); 9041da177e4SLinus Torvalds 90536523159SDasaratharaman Chandramouli int rdma_destroy_ah(struct ib_ah *ah) 9061da177e4SLinus Torvalds { 9071a1f460fSJason Gunthorpe const struct ib_gid_attr *sgid_attr = ah->sgid_attr; 9081da177e4SLinus Torvalds struct ib_pd *pd; 9091da177e4SLinus Torvalds int ret; 9101da177e4SLinus Torvalds 9111da177e4SLinus Torvalds pd = ah->pd; 9121da177e4SLinus Torvalds ret = ah->device->destroy_ah(ah); 9131a1f460fSJason Gunthorpe if (!ret) { 9141da177e4SLinus Torvalds atomic_dec(&pd->usecnt); 9151a1f460fSJason Gunthorpe if (sgid_attr) 9161a1f460fSJason Gunthorpe rdma_put_gid_attr(sgid_attr); 9171a1f460fSJason Gunthorpe } 9181da177e4SLinus Torvalds 9191da177e4SLinus Torvalds return ret; 9201da177e4SLinus Torvalds } 92136523159SDasaratharaman Chandramouli EXPORT_SYMBOL(rdma_destroy_ah); 9221da177e4SLinus Torvalds 923d41fcc67SRoland Dreier /* Shared receive queues */ 924d41fcc67SRoland Dreier 925d41fcc67SRoland Dreier struct ib_srq *ib_create_srq(struct ib_pd *pd, 926d41fcc67SRoland Dreier struct ib_srq_init_attr *srq_init_attr) 927d41fcc67SRoland Dreier { 928d41fcc67SRoland Dreier struct ib_srq *srq; 929d41fcc67SRoland Dreier 930d41fcc67SRoland Dreier if (!pd->device->create_srq) 93187915bf8SLeon Romanovsky return ERR_PTR(-EOPNOTSUPP); 932d41fcc67SRoland Dreier 933d41fcc67SRoland Dreier srq = pd->device->create_srq(pd, srq_init_attr, NULL); 934d41fcc67SRoland Dreier 935d41fcc67SRoland Dreier if (!IS_ERR(srq)) { 936d41fcc67SRoland Dreier srq->device = pd->device; 937d41fcc67SRoland Dreier srq->pd = pd; 938d41fcc67SRoland Dreier srq->uobject = NULL; 939d41fcc67SRoland Dreier srq->event_handler = srq_init_attr->event_handler; 940d41fcc67SRoland Dreier srq->srq_context = srq_init_attr->srq_context; 94196104edaSSean Hefty srq->srq_type = srq_init_attr->srq_type; 9421a56ff6dSArtemy Kovalyov if (ib_srq_has_cq(srq->srq_type)) { 9431a56ff6dSArtemy Kovalyov srq->ext.cq = srq_init_attr->ext.cq; 9441a56ff6dSArtemy Kovalyov atomic_inc(&srq->ext.cq->usecnt); 9451a56ff6dSArtemy Kovalyov } 946418d5130SSean Hefty if (srq->srq_type == IB_SRQT_XRC) { 947418d5130SSean Hefty srq->ext.xrc.xrcd = srq_init_attr->ext.xrc.xrcd; 948418d5130SSean Hefty atomic_inc(&srq->ext.xrc.xrcd->usecnt); 949418d5130SSean Hefty } 950d41fcc67SRoland Dreier atomic_inc(&pd->usecnt); 951d41fcc67SRoland Dreier atomic_set(&srq->usecnt, 0); 952d41fcc67SRoland Dreier } 953d41fcc67SRoland Dreier 954d41fcc67SRoland Dreier return srq; 955d41fcc67SRoland Dreier } 956d41fcc67SRoland Dreier EXPORT_SYMBOL(ib_create_srq); 957d41fcc67SRoland Dreier 958d41fcc67SRoland Dreier int ib_modify_srq(struct ib_srq *srq, 959d41fcc67SRoland Dreier struct ib_srq_attr *srq_attr, 960d41fcc67SRoland Dreier enum ib_srq_attr_mask srq_attr_mask) 961d41fcc67SRoland Dreier { 9627ce5eacbSDotan Barak return srq->device->modify_srq ? 9637ce5eacbSDotan Barak srq->device->modify_srq(srq, srq_attr, srq_attr_mask, NULL) : 96487915bf8SLeon Romanovsky -EOPNOTSUPP; 965d41fcc67SRoland Dreier } 966d41fcc67SRoland Dreier EXPORT_SYMBOL(ib_modify_srq); 967d41fcc67SRoland Dreier 968d41fcc67SRoland Dreier int ib_query_srq(struct ib_srq *srq, 969d41fcc67SRoland Dreier struct ib_srq_attr *srq_attr) 970d41fcc67SRoland Dreier { 971d41fcc67SRoland Dreier return srq->device->query_srq ? 97287915bf8SLeon Romanovsky srq->device->query_srq(srq, srq_attr) : -EOPNOTSUPP; 973d41fcc67SRoland Dreier } 974d41fcc67SRoland Dreier EXPORT_SYMBOL(ib_query_srq); 975d41fcc67SRoland Dreier 976d41fcc67SRoland Dreier int ib_destroy_srq(struct ib_srq *srq) 977d41fcc67SRoland Dreier { 978d41fcc67SRoland Dreier struct ib_pd *pd; 979418d5130SSean Hefty enum ib_srq_type srq_type; 980418d5130SSean Hefty struct ib_xrcd *uninitialized_var(xrcd); 981418d5130SSean Hefty struct ib_cq *uninitialized_var(cq); 982d41fcc67SRoland Dreier int ret; 983d41fcc67SRoland Dreier 984d41fcc67SRoland Dreier if (atomic_read(&srq->usecnt)) 985d41fcc67SRoland Dreier return -EBUSY; 986d41fcc67SRoland Dreier 987d41fcc67SRoland Dreier pd = srq->pd; 988418d5130SSean Hefty srq_type = srq->srq_type; 9891a56ff6dSArtemy Kovalyov if (ib_srq_has_cq(srq_type)) 9901a56ff6dSArtemy Kovalyov cq = srq->ext.cq; 9911a56ff6dSArtemy Kovalyov if (srq_type == IB_SRQT_XRC) 992418d5130SSean Hefty xrcd = srq->ext.xrc.xrcd; 993d41fcc67SRoland Dreier 994d41fcc67SRoland Dreier ret = srq->device->destroy_srq(srq); 995418d5130SSean Hefty if (!ret) { 996d41fcc67SRoland Dreier atomic_dec(&pd->usecnt); 9971a56ff6dSArtemy Kovalyov if (srq_type == IB_SRQT_XRC) 998418d5130SSean Hefty atomic_dec(&xrcd->usecnt); 9991a56ff6dSArtemy Kovalyov if (ib_srq_has_cq(srq_type)) 1000418d5130SSean Hefty atomic_dec(&cq->usecnt); 1001418d5130SSean Hefty } 1002d41fcc67SRoland Dreier 1003d41fcc67SRoland Dreier return ret; 1004d41fcc67SRoland Dreier } 1005d41fcc67SRoland Dreier EXPORT_SYMBOL(ib_destroy_srq); 1006d41fcc67SRoland Dreier 10071da177e4SLinus Torvalds /* Queue pairs */ 10081da177e4SLinus Torvalds 10090e0ec7e0SSean Hefty static void __ib_shared_qp_event_handler(struct ib_event *event, void *context) 10100e0ec7e0SSean Hefty { 10110e0ec7e0SSean Hefty struct ib_qp *qp = context; 101273c40c61SYishai Hadas unsigned long flags; 10130e0ec7e0SSean Hefty 101473c40c61SYishai Hadas spin_lock_irqsave(&qp->device->event_handler_lock, flags); 10150e0ec7e0SSean Hefty list_for_each_entry(event->element.qp, &qp->open_list, open_list) 1016eec9e29fSShlomo Pongratz if (event->element.qp->event_handler) 10170e0ec7e0SSean Hefty event->element.qp->event_handler(event, event->element.qp->qp_context); 101873c40c61SYishai Hadas spin_unlock_irqrestore(&qp->device->event_handler_lock, flags); 10190e0ec7e0SSean Hefty } 10200e0ec7e0SSean Hefty 1021d3d72d90SSean Hefty static void __ib_insert_xrcd_qp(struct ib_xrcd *xrcd, struct ib_qp *qp) 1022d3d72d90SSean Hefty { 1023d3d72d90SSean Hefty mutex_lock(&xrcd->tgt_qp_mutex); 1024d3d72d90SSean Hefty list_add(&qp->xrcd_list, &xrcd->tgt_qp_list); 1025d3d72d90SSean Hefty mutex_unlock(&xrcd->tgt_qp_mutex); 1026d3d72d90SSean Hefty } 1027d3d72d90SSean Hefty 10280e0ec7e0SSean Hefty static struct ib_qp *__ib_open_qp(struct ib_qp *real_qp, 10290e0ec7e0SSean Hefty void (*event_handler)(struct ib_event *, void *), 10300e0ec7e0SSean Hefty void *qp_context) 1031d3d72d90SSean Hefty { 10320e0ec7e0SSean Hefty struct ib_qp *qp; 10330e0ec7e0SSean Hefty unsigned long flags; 1034d291f1a6SDaniel Jurgens int err; 10350e0ec7e0SSean Hefty 10360e0ec7e0SSean Hefty qp = kzalloc(sizeof *qp, GFP_KERNEL); 10370e0ec7e0SSean Hefty if (!qp) 10380e0ec7e0SSean Hefty return ERR_PTR(-ENOMEM); 10390e0ec7e0SSean Hefty 10400e0ec7e0SSean Hefty qp->real_qp = real_qp; 1041d291f1a6SDaniel Jurgens err = ib_open_shared_qp_security(qp, real_qp->device); 1042d291f1a6SDaniel Jurgens if (err) { 1043d291f1a6SDaniel Jurgens kfree(qp); 1044d291f1a6SDaniel Jurgens return ERR_PTR(err); 1045d291f1a6SDaniel Jurgens } 1046d291f1a6SDaniel Jurgens 1047d291f1a6SDaniel Jurgens qp->real_qp = real_qp; 10480e0ec7e0SSean Hefty atomic_inc(&real_qp->usecnt); 10490e0ec7e0SSean Hefty qp->device = real_qp->device; 10500e0ec7e0SSean Hefty qp->event_handler = event_handler; 10510e0ec7e0SSean Hefty qp->qp_context = qp_context; 10520e0ec7e0SSean Hefty qp->qp_num = real_qp->qp_num; 10530e0ec7e0SSean Hefty qp->qp_type = real_qp->qp_type; 10540e0ec7e0SSean Hefty 10550e0ec7e0SSean Hefty spin_lock_irqsave(&real_qp->device->event_handler_lock, flags); 10560e0ec7e0SSean Hefty list_add(&qp->open_list, &real_qp->open_list); 10570e0ec7e0SSean Hefty spin_unlock_irqrestore(&real_qp->device->event_handler_lock, flags); 10580e0ec7e0SSean Hefty 10590e0ec7e0SSean Hefty return qp; 1060d3d72d90SSean Hefty } 1061d3d72d90SSean Hefty 10620e0ec7e0SSean Hefty struct ib_qp *ib_open_qp(struct ib_xrcd *xrcd, 10630e0ec7e0SSean Hefty struct ib_qp_open_attr *qp_open_attr) 10640e0ec7e0SSean Hefty { 10650e0ec7e0SSean Hefty struct ib_qp *qp, *real_qp; 10660e0ec7e0SSean Hefty 10670e0ec7e0SSean Hefty if (qp_open_attr->qp_type != IB_QPT_XRC_TGT) 10680e0ec7e0SSean Hefty return ERR_PTR(-EINVAL); 10690e0ec7e0SSean Hefty 10700e0ec7e0SSean Hefty qp = ERR_PTR(-EINVAL); 10710e0ec7e0SSean Hefty mutex_lock(&xrcd->tgt_qp_mutex); 10720e0ec7e0SSean Hefty list_for_each_entry(real_qp, &xrcd->tgt_qp_list, xrcd_list) { 10730e0ec7e0SSean Hefty if (real_qp->qp_num == qp_open_attr->qp_num) { 10740e0ec7e0SSean Hefty qp = __ib_open_qp(real_qp, qp_open_attr->event_handler, 10750e0ec7e0SSean Hefty qp_open_attr->qp_context); 10760e0ec7e0SSean Hefty break; 10770e0ec7e0SSean Hefty } 10780e0ec7e0SSean Hefty } 10790e0ec7e0SSean Hefty mutex_unlock(&xrcd->tgt_qp_mutex); 10800e0ec7e0SSean Hefty return qp; 10810e0ec7e0SSean Hefty } 10820e0ec7e0SSean Hefty EXPORT_SYMBOL(ib_open_qp); 10830e0ec7e0SSean Hefty 108404c41bf3SChristoph Hellwig static struct ib_qp *ib_create_xrc_qp(struct ib_qp *qp, 10851da177e4SLinus Torvalds struct ib_qp_init_attr *qp_init_attr) 10861da177e4SLinus Torvalds { 108704c41bf3SChristoph Hellwig struct ib_qp *real_qp = qp; 10881da177e4SLinus Torvalds 10890e0ec7e0SSean Hefty qp->event_handler = __ib_shared_qp_event_handler; 10900e0ec7e0SSean Hefty qp->qp_context = qp; 1091b42b63cfSSean Hefty qp->pd = NULL; 1092b42b63cfSSean Hefty qp->send_cq = qp->recv_cq = NULL; 1093b42b63cfSSean Hefty qp->srq = NULL; 1094b42b63cfSSean Hefty qp->xrcd = qp_init_attr->xrcd; 1095b42b63cfSSean Hefty atomic_inc(&qp_init_attr->xrcd->usecnt); 10960e0ec7e0SSean Hefty INIT_LIST_HEAD(&qp->open_list); 10970e0ec7e0SSean Hefty 10980e0ec7e0SSean Hefty qp = __ib_open_qp(real_qp, qp_init_attr->event_handler, 10990e0ec7e0SSean Hefty qp_init_attr->qp_context); 11000e0ec7e0SSean Hefty if (!IS_ERR(qp)) 11010e0ec7e0SSean Hefty __ib_insert_xrcd_qp(qp_init_attr->xrcd, real_qp); 11020e0ec7e0SSean Hefty else 11030e0ec7e0SSean Hefty real_qp->device->destroy_qp(real_qp); 110404c41bf3SChristoph Hellwig return qp; 110504c41bf3SChristoph Hellwig } 110604c41bf3SChristoph Hellwig 110704c41bf3SChristoph Hellwig struct ib_qp *ib_create_qp(struct ib_pd *pd, 110804c41bf3SChristoph Hellwig struct ib_qp_init_attr *qp_init_attr) 110904c41bf3SChristoph Hellwig { 111004c41bf3SChristoph Hellwig struct ib_device *device = pd ? pd->device : qp_init_attr->xrcd->device; 111104c41bf3SChristoph Hellwig struct ib_qp *qp; 1112a060b562SChristoph Hellwig int ret; 1113a060b562SChristoph Hellwig 1114a9017e23SYishai Hadas if (qp_init_attr->rwq_ind_tbl && 1115a9017e23SYishai Hadas (qp_init_attr->recv_cq || 1116a9017e23SYishai Hadas qp_init_attr->srq || qp_init_attr->cap.max_recv_wr || 1117a9017e23SYishai Hadas qp_init_attr->cap.max_recv_sge)) 1118a9017e23SYishai Hadas return ERR_PTR(-EINVAL); 1119a9017e23SYishai Hadas 1120a060b562SChristoph Hellwig /* 1121a060b562SChristoph Hellwig * If the callers is using the RDMA API calculate the resources 1122a060b562SChristoph Hellwig * needed for the RDMA READ/WRITE operations. 1123a060b562SChristoph Hellwig * 1124a060b562SChristoph Hellwig * Note that these callers need to pass in a port number. 1125a060b562SChristoph Hellwig */ 1126a060b562SChristoph Hellwig if (qp_init_attr->cap.max_rdma_ctxs) 1127a060b562SChristoph Hellwig rdma_rw_init_qp(device, qp_init_attr); 112804c41bf3SChristoph Hellwig 11292f08ee36SSteve Wise qp = _ib_create_qp(device, pd, qp_init_attr, NULL, NULL); 113004c41bf3SChristoph Hellwig if (IS_ERR(qp)) 113104c41bf3SChristoph Hellwig return qp; 113204c41bf3SChristoph Hellwig 1133d291f1a6SDaniel Jurgens ret = ib_create_qp_security(qp, device); 1134d291f1a6SDaniel Jurgens if (ret) { 1135d291f1a6SDaniel Jurgens ib_destroy_qp(qp); 1136d291f1a6SDaniel Jurgens return ERR_PTR(ret); 1137d291f1a6SDaniel Jurgens } 1138d291f1a6SDaniel Jurgens 113904c41bf3SChristoph Hellwig qp->real_qp = qp; 114004c41bf3SChristoph Hellwig qp->qp_type = qp_init_attr->qp_type; 1141a9017e23SYishai Hadas qp->rwq_ind_tbl = qp_init_attr->rwq_ind_tbl; 114204c41bf3SChristoph Hellwig 114304c41bf3SChristoph Hellwig atomic_set(&qp->usecnt, 0); 1144fffb0383SChristoph Hellwig qp->mrs_used = 0; 1145fffb0383SChristoph Hellwig spin_lock_init(&qp->mr_lock); 1146a060b562SChristoph Hellwig INIT_LIST_HEAD(&qp->rdma_mrs); 11470e353e34SChristoph Hellwig INIT_LIST_HEAD(&qp->sig_mrs); 1148498ca3c8SNoa Osherovich qp->port = 0; 1149fffb0383SChristoph Hellwig 115004c41bf3SChristoph Hellwig if (qp_init_attr->qp_type == IB_QPT_XRC_TGT) 115104c41bf3SChristoph Hellwig return ib_create_xrc_qp(qp, qp_init_attr); 115204c41bf3SChristoph Hellwig 11531da177e4SLinus Torvalds qp->event_handler = qp_init_attr->event_handler; 11541da177e4SLinus Torvalds qp->qp_context = qp_init_attr->qp_context; 1155b42b63cfSSean Hefty if (qp_init_attr->qp_type == IB_QPT_XRC_INI) { 1156b42b63cfSSean Hefty qp->recv_cq = NULL; 1157b42b63cfSSean Hefty qp->srq = NULL; 1158b42b63cfSSean Hefty } else { 1159b42b63cfSSean Hefty qp->recv_cq = qp_init_attr->recv_cq; 1160a9017e23SYishai Hadas if (qp_init_attr->recv_cq) 1161b42b63cfSSean Hefty atomic_inc(&qp_init_attr->recv_cq->usecnt); 1162b42b63cfSSean Hefty qp->srq = qp_init_attr->srq; 1163b42b63cfSSean Hefty if (qp->srq) 1164b42b63cfSSean Hefty atomic_inc(&qp_init_attr->srq->usecnt); 1165b42b63cfSSean Hefty } 1166b42b63cfSSean Hefty 11671da177e4SLinus Torvalds qp->send_cq = qp_init_attr->send_cq; 1168b42b63cfSSean Hefty qp->xrcd = NULL; 1169b42b63cfSSean Hefty 11701da177e4SLinus Torvalds atomic_inc(&pd->usecnt); 1171a9017e23SYishai Hadas if (qp_init_attr->send_cq) 11721da177e4SLinus Torvalds atomic_inc(&qp_init_attr->send_cq->usecnt); 1173a9017e23SYishai Hadas if (qp_init_attr->rwq_ind_tbl) 1174a9017e23SYishai Hadas atomic_inc(&qp->rwq_ind_tbl->usecnt); 1175a060b562SChristoph Hellwig 1176a060b562SChristoph Hellwig if (qp_init_attr->cap.max_rdma_ctxs) { 1177a060b562SChristoph Hellwig ret = rdma_rw_init_mrs(qp, qp_init_attr); 1178a060b562SChristoph Hellwig if (ret) { 1179a060b562SChristoph Hellwig pr_err("failed to init MR pool ret= %d\n", ret); 1180a060b562SChristoph Hellwig ib_destroy_qp(qp); 1181b6bc1c73SSteve Wise return ERR_PTR(ret); 1182a060b562SChristoph Hellwig } 1183a060b562SChristoph Hellwig } 1184a060b562SChristoph Hellwig 1185632bc3f6SBart Van Assche /* 1186632bc3f6SBart Van Assche * Note: all hw drivers guarantee that max_send_sge is lower than 1187632bc3f6SBart Van Assche * the device RDMA WRITE SGE limit but not all hw drivers ensure that 1188632bc3f6SBart Van Assche * max_send_sge <= max_sge_rd. 1189632bc3f6SBart Van Assche */ 1190632bc3f6SBart Van Assche qp->max_write_sge = qp_init_attr->cap.max_send_sge; 1191632bc3f6SBart Van Assche qp->max_read_sge = min_t(u32, qp_init_attr->cap.max_send_sge, 1192632bc3f6SBart Van Assche device->attrs.max_sge_rd); 1193632bc3f6SBart Van Assche 11941da177e4SLinus Torvalds return qp; 11951da177e4SLinus Torvalds } 11961da177e4SLinus Torvalds EXPORT_SYMBOL(ib_create_qp); 11971da177e4SLinus Torvalds 11988a51866fSRoland Dreier static const struct { 11998a51866fSRoland Dreier int valid; 1200b42b63cfSSean Hefty enum ib_qp_attr_mask req_param[IB_QPT_MAX]; 1201b42b63cfSSean Hefty enum ib_qp_attr_mask opt_param[IB_QPT_MAX]; 12028a51866fSRoland Dreier } qp_state_table[IB_QPS_ERR + 1][IB_QPS_ERR + 1] = { 12038a51866fSRoland Dreier [IB_QPS_RESET] = { 12048a51866fSRoland Dreier [IB_QPS_RESET] = { .valid = 1 }, 12058a51866fSRoland Dreier [IB_QPS_INIT] = { 12068a51866fSRoland Dreier .valid = 1, 12078a51866fSRoland Dreier .req_param = { 12088a51866fSRoland Dreier [IB_QPT_UD] = (IB_QP_PKEY_INDEX | 12098a51866fSRoland Dreier IB_QP_PORT | 12108a51866fSRoland Dreier IB_QP_QKEY), 1211c938a616SOr Gerlitz [IB_QPT_RAW_PACKET] = IB_QP_PORT, 12128a51866fSRoland Dreier [IB_QPT_UC] = (IB_QP_PKEY_INDEX | 12138a51866fSRoland Dreier IB_QP_PORT | 12148a51866fSRoland Dreier IB_QP_ACCESS_FLAGS), 12158a51866fSRoland Dreier [IB_QPT_RC] = (IB_QP_PKEY_INDEX | 12168a51866fSRoland Dreier IB_QP_PORT | 12178a51866fSRoland Dreier IB_QP_ACCESS_FLAGS), 1218b42b63cfSSean Hefty [IB_QPT_XRC_INI] = (IB_QP_PKEY_INDEX | 1219b42b63cfSSean Hefty IB_QP_PORT | 1220b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS), 1221b42b63cfSSean Hefty [IB_QPT_XRC_TGT] = (IB_QP_PKEY_INDEX | 1222b42b63cfSSean Hefty IB_QP_PORT | 1223b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS), 12248a51866fSRoland Dreier [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | 12258a51866fSRoland Dreier IB_QP_QKEY), 12268a51866fSRoland Dreier [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | 12278a51866fSRoland Dreier IB_QP_QKEY), 12288a51866fSRoland Dreier } 12298a51866fSRoland Dreier }, 12308a51866fSRoland Dreier }, 12318a51866fSRoland Dreier [IB_QPS_INIT] = { 12328a51866fSRoland Dreier [IB_QPS_RESET] = { .valid = 1 }, 12338a51866fSRoland Dreier [IB_QPS_ERR] = { .valid = 1 }, 12348a51866fSRoland Dreier [IB_QPS_INIT] = { 12358a51866fSRoland Dreier .valid = 1, 12368a51866fSRoland Dreier .opt_param = { 12378a51866fSRoland Dreier [IB_QPT_UD] = (IB_QP_PKEY_INDEX | 12388a51866fSRoland Dreier IB_QP_PORT | 12398a51866fSRoland Dreier IB_QP_QKEY), 12408a51866fSRoland Dreier [IB_QPT_UC] = (IB_QP_PKEY_INDEX | 12418a51866fSRoland Dreier IB_QP_PORT | 12428a51866fSRoland Dreier IB_QP_ACCESS_FLAGS), 12438a51866fSRoland Dreier [IB_QPT_RC] = (IB_QP_PKEY_INDEX | 12448a51866fSRoland Dreier IB_QP_PORT | 12458a51866fSRoland Dreier IB_QP_ACCESS_FLAGS), 1246b42b63cfSSean Hefty [IB_QPT_XRC_INI] = (IB_QP_PKEY_INDEX | 1247b42b63cfSSean Hefty IB_QP_PORT | 1248b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS), 1249b42b63cfSSean Hefty [IB_QPT_XRC_TGT] = (IB_QP_PKEY_INDEX | 1250b42b63cfSSean Hefty IB_QP_PORT | 1251b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS), 12528a51866fSRoland Dreier [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | 12538a51866fSRoland Dreier IB_QP_QKEY), 12548a51866fSRoland Dreier [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | 12558a51866fSRoland Dreier IB_QP_QKEY), 12568a51866fSRoland Dreier } 12578a51866fSRoland Dreier }, 12588a51866fSRoland Dreier [IB_QPS_RTR] = { 12598a51866fSRoland Dreier .valid = 1, 12608a51866fSRoland Dreier .req_param = { 12618a51866fSRoland Dreier [IB_QPT_UC] = (IB_QP_AV | 12628a51866fSRoland Dreier IB_QP_PATH_MTU | 12638a51866fSRoland Dreier IB_QP_DEST_QPN | 12648a51866fSRoland Dreier IB_QP_RQ_PSN), 12658a51866fSRoland Dreier [IB_QPT_RC] = (IB_QP_AV | 12668a51866fSRoland Dreier IB_QP_PATH_MTU | 12678a51866fSRoland Dreier IB_QP_DEST_QPN | 12688a51866fSRoland Dreier IB_QP_RQ_PSN | 12698a51866fSRoland Dreier IB_QP_MAX_DEST_RD_ATOMIC | 12708a51866fSRoland Dreier IB_QP_MIN_RNR_TIMER), 1271b42b63cfSSean Hefty [IB_QPT_XRC_INI] = (IB_QP_AV | 1272b42b63cfSSean Hefty IB_QP_PATH_MTU | 1273b42b63cfSSean Hefty IB_QP_DEST_QPN | 1274b42b63cfSSean Hefty IB_QP_RQ_PSN), 1275b42b63cfSSean Hefty [IB_QPT_XRC_TGT] = (IB_QP_AV | 1276b42b63cfSSean Hefty IB_QP_PATH_MTU | 1277b42b63cfSSean Hefty IB_QP_DEST_QPN | 1278b42b63cfSSean Hefty IB_QP_RQ_PSN | 1279b42b63cfSSean Hefty IB_QP_MAX_DEST_RD_ATOMIC | 1280b42b63cfSSean Hefty IB_QP_MIN_RNR_TIMER), 12818a51866fSRoland Dreier }, 12828a51866fSRoland Dreier .opt_param = { 12838a51866fSRoland Dreier [IB_QPT_UD] = (IB_QP_PKEY_INDEX | 12848a51866fSRoland Dreier IB_QP_QKEY), 12858a51866fSRoland Dreier [IB_QPT_UC] = (IB_QP_ALT_PATH | 12868a51866fSRoland Dreier IB_QP_ACCESS_FLAGS | 12878a51866fSRoland Dreier IB_QP_PKEY_INDEX), 12888a51866fSRoland Dreier [IB_QPT_RC] = (IB_QP_ALT_PATH | 12898a51866fSRoland Dreier IB_QP_ACCESS_FLAGS | 12908a51866fSRoland Dreier IB_QP_PKEY_INDEX), 1291b42b63cfSSean Hefty [IB_QPT_XRC_INI] = (IB_QP_ALT_PATH | 1292b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS | 1293b42b63cfSSean Hefty IB_QP_PKEY_INDEX), 1294b42b63cfSSean Hefty [IB_QPT_XRC_TGT] = (IB_QP_ALT_PATH | 1295b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS | 1296b42b63cfSSean Hefty IB_QP_PKEY_INDEX), 12978a51866fSRoland Dreier [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | 12988a51866fSRoland Dreier IB_QP_QKEY), 12998a51866fSRoland Dreier [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | 13008a51866fSRoland Dreier IB_QP_QKEY), 1301dd5f03beSMatan Barak }, 1302dbf727deSMatan Barak }, 13038a51866fSRoland Dreier }, 13048a51866fSRoland Dreier [IB_QPS_RTR] = { 13058a51866fSRoland Dreier [IB_QPS_RESET] = { .valid = 1 }, 13068a51866fSRoland Dreier [IB_QPS_ERR] = { .valid = 1 }, 13078a51866fSRoland Dreier [IB_QPS_RTS] = { 13088a51866fSRoland Dreier .valid = 1, 13098a51866fSRoland Dreier .req_param = { 13108a51866fSRoland Dreier [IB_QPT_UD] = IB_QP_SQ_PSN, 13118a51866fSRoland Dreier [IB_QPT_UC] = IB_QP_SQ_PSN, 13128a51866fSRoland Dreier [IB_QPT_RC] = (IB_QP_TIMEOUT | 13138a51866fSRoland Dreier IB_QP_RETRY_CNT | 13148a51866fSRoland Dreier IB_QP_RNR_RETRY | 13158a51866fSRoland Dreier IB_QP_SQ_PSN | 13168a51866fSRoland Dreier IB_QP_MAX_QP_RD_ATOMIC), 1317b42b63cfSSean Hefty [IB_QPT_XRC_INI] = (IB_QP_TIMEOUT | 1318b42b63cfSSean Hefty IB_QP_RETRY_CNT | 1319b42b63cfSSean Hefty IB_QP_RNR_RETRY | 1320b42b63cfSSean Hefty IB_QP_SQ_PSN | 1321b42b63cfSSean Hefty IB_QP_MAX_QP_RD_ATOMIC), 1322b42b63cfSSean Hefty [IB_QPT_XRC_TGT] = (IB_QP_TIMEOUT | 1323b42b63cfSSean Hefty IB_QP_SQ_PSN), 13248a51866fSRoland Dreier [IB_QPT_SMI] = IB_QP_SQ_PSN, 13258a51866fSRoland Dreier [IB_QPT_GSI] = IB_QP_SQ_PSN, 13268a51866fSRoland Dreier }, 13278a51866fSRoland Dreier .opt_param = { 13288a51866fSRoland Dreier [IB_QPT_UD] = (IB_QP_CUR_STATE | 13298a51866fSRoland Dreier IB_QP_QKEY), 13308a51866fSRoland Dreier [IB_QPT_UC] = (IB_QP_CUR_STATE | 13318a51866fSRoland Dreier IB_QP_ALT_PATH | 13328a51866fSRoland Dreier IB_QP_ACCESS_FLAGS | 13338a51866fSRoland Dreier IB_QP_PATH_MIG_STATE), 13348a51866fSRoland Dreier [IB_QPT_RC] = (IB_QP_CUR_STATE | 13358a51866fSRoland Dreier IB_QP_ALT_PATH | 13368a51866fSRoland Dreier IB_QP_ACCESS_FLAGS | 13378a51866fSRoland Dreier IB_QP_MIN_RNR_TIMER | 13388a51866fSRoland Dreier IB_QP_PATH_MIG_STATE), 1339b42b63cfSSean Hefty [IB_QPT_XRC_INI] = (IB_QP_CUR_STATE | 1340b42b63cfSSean Hefty IB_QP_ALT_PATH | 1341b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS | 1342b42b63cfSSean Hefty IB_QP_PATH_MIG_STATE), 1343b42b63cfSSean Hefty [IB_QPT_XRC_TGT] = (IB_QP_CUR_STATE | 1344b42b63cfSSean Hefty IB_QP_ALT_PATH | 1345b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS | 1346b42b63cfSSean Hefty IB_QP_MIN_RNR_TIMER | 1347b42b63cfSSean Hefty IB_QP_PATH_MIG_STATE), 13488a51866fSRoland Dreier [IB_QPT_SMI] = (IB_QP_CUR_STATE | 13498a51866fSRoland Dreier IB_QP_QKEY), 13508a51866fSRoland Dreier [IB_QPT_GSI] = (IB_QP_CUR_STATE | 13518a51866fSRoland Dreier IB_QP_QKEY), 1352528e5a1bSBodong Wang [IB_QPT_RAW_PACKET] = IB_QP_RATE_LIMIT, 13538a51866fSRoland Dreier } 13548a51866fSRoland Dreier } 13558a51866fSRoland Dreier }, 13568a51866fSRoland Dreier [IB_QPS_RTS] = { 13578a51866fSRoland Dreier [IB_QPS_RESET] = { .valid = 1 }, 13588a51866fSRoland Dreier [IB_QPS_ERR] = { .valid = 1 }, 13598a51866fSRoland Dreier [IB_QPS_RTS] = { 13608a51866fSRoland Dreier .valid = 1, 13618a51866fSRoland Dreier .opt_param = { 13628a51866fSRoland Dreier [IB_QPT_UD] = (IB_QP_CUR_STATE | 13638a51866fSRoland Dreier IB_QP_QKEY), 13644546d31dSDotan Barak [IB_QPT_UC] = (IB_QP_CUR_STATE | 13654546d31dSDotan Barak IB_QP_ACCESS_FLAGS | 13668a51866fSRoland Dreier IB_QP_ALT_PATH | 13678a51866fSRoland Dreier IB_QP_PATH_MIG_STATE), 13684546d31dSDotan Barak [IB_QPT_RC] = (IB_QP_CUR_STATE | 13694546d31dSDotan Barak IB_QP_ACCESS_FLAGS | 13708a51866fSRoland Dreier IB_QP_ALT_PATH | 13718a51866fSRoland Dreier IB_QP_PATH_MIG_STATE | 13728a51866fSRoland Dreier IB_QP_MIN_RNR_TIMER), 1373b42b63cfSSean Hefty [IB_QPT_XRC_INI] = (IB_QP_CUR_STATE | 1374b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS | 1375b42b63cfSSean Hefty IB_QP_ALT_PATH | 1376b42b63cfSSean Hefty IB_QP_PATH_MIG_STATE), 1377b42b63cfSSean Hefty [IB_QPT_XRC_TGT] = (IB_QP_CUR_STATE | 1378b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS | 1379b42b63cfSSean Hefty IB_QP_ALT_PATH | 1380b42b63cfSSean Hefty IB_QP_PATH_MIG_STATE | 1381b42b63cfSSean Hefty IB_QP_MIN_RNR_TIMER), 13828a51866fSRoland Dreier [IB_QPT_SMI] = (IB_QP_CUR_STATE | 13838a51866fSRoland Dreier IB_QP_QKEY), 13848a51866fSRoland Dreier [IB_QPT_GSI] = (IB_QP_CUR_STATE | 13858a51866fSRoland Dreier IB_QP_QKEY), 1386528e5a1bSBodong Wang [IB_QPT_RAW_PACKET] = IB_QP_RATE_LIMIT, 13878a51866fSRoland Dreier } 13888a51866fSRoland Dreier }, 13898a51866fSRoland Dreier [IB_QPS_SQD] = { 13908a51866fSRoland Dreier .valid = 1, 13918a51866fSRoland Dreier .opt_param = { 13928a51866fSRoland Dreier [IB_QPT_UD] = IB_QP_EN_SQD_ASYNC_NOTIFY, 13938a51866fSRoland Dreier [IB_QPT_UC] = IB_QP_EN_SQD_ASYNC_NOTIFY, 13948a51866fSRoland Dreier [IB_QPT_RC] = IB_QP_EN_SQD_ASYNC_NOTIFY, 1395b42b63cfSSean Hefty [IB_QPT_XRC_INI] = IB_QP_EN_SQD_ASYNC_NOTIFY, 1396b42b63cfSSean Hefty [IB_QPT_XRC_TGT] = IB_QP_EN_SQD_ASYNC_NOTIFY, /* ??? */ 13978a51866fSRoland Dreier [IB_QPT_SMI] = IB_QP_EN_SQD_ASYNC_NOTIFY, 13988a51866fSRoland Dreier [IB_QPT_GSI] = IB_QP_EN_SQD_ASYNC_NOTIFY 13998a51866fSRoland Dreier } 14008a51866fSRoland Dreier }, 14018a51866fSRoland Dreier }, 14028a51866fSRoland Dreier [IB_QPS_SQD] = { 14038a51866fSRoland Dreier [IB_QPS_RESET] = { .valid = 1 }, 14048a51866fSRoland Dreier [IB_QPS_ERR] = { .valid = 1 }, 14058a51866fSRoland Dreier [IB_QPS_RTS] = { 14068a51866fSRoland Dreier .valid = 1, 14078a51866fSRoland Dreier .opt_param = { 14088a51866fSRoland Dreier [IB_QPT_UD] = (IB_QP_CUR_STATE | 14098a51866fSRoland Dreier IB_QP_QKEY), 14108a51866fSRoland Dreier [IB_QPT_UC] = (IB_QP_CUR_STATE | 14118a51866fSRoland Dreier IB_QP_ALT_PATH | 14128a51866fSRoland Dreier IB_QP_ACCESS_FLAGS | 14138a51866fSRoland Dreier IB_QP_PATH_MIG_STATE), 14148a51866fSRoland Dreier [IB_QPT_RC] = (IB_QP_CUR_STATE | 14158a51866fSRoland Dreier IB_QP_ALT_PATH | 14168a51866fSRoland Dreier IB_QP_ACCESS_FLAGS | 14178a51866fSRoland Dreier IB_QP_MIN_RNR_TIMER | 14188a51866fSRoland Dreier IB_QP_PATH_MIG_STATE), 1419b42b63cfSSean Hefty [IB_QPT_XRC_INI] = (IB_QP_CUR_STATE | 1420b42b63cfSSean Hefty IB_QP_ALT_PATH | 1421b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS | 1422b42b63cfSSean Hefty IB_QP_PATH_MIG_STATE), 1423b42b63cfSSean Hefty [IB_QPT_XRC_TGT] = (IB_QP_CUR_STATE | 1424b42b63cfSSean Hefty IB_QP_ALT_PATH | 1425b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS | 1426b42b63cfSSean Hefty IB_QP_MIN_RNR_TIMER | 1427b42b63cfSSean Hefty IB_QP_PATH_MIG_STATE), 14288a51866fSRoland Dreier [IB_QPT_SMI] = (IB_QP_CUR_STATE | 14298a51866fSRoland Dreier IB_QP_QKEY), 14308a51866fSRoland Dreier [IB_QPT_GSI] = (IB_QP_CUR_STATE | 14318a51866fSRoland Dreier IB_QP_QKEY), 14328a51866fSRoland Dreier } 14338a51866fSRoland Dreier }, 14348a51866fSRoland Dreier [IB_QPS_SQD] = { 14358a51866fSRoland Dreier .valid = 1, 14368a51866fSRoland Dreier .opt_param = { 14378a51866fSRoland Dreier [IB_QPT_UD] = (IB_QP_PKEY_INDEX | 14388a51866fSRoland Dreier IB_QP_QKEY), 14398a51866fSRoland Dreier [IB_QPT_UC] = (IB_QP_AV | 14408a51866fSRoland Dreier IB_QP_ALT_PATH | 14418a51866fSRoland Dreier IB_QP_ACCESS_FLAGS | 14428a51866fSRoland Dreier IB_QP_PKEY_INDEX | 14438a51866fSRoland Dreier IB_QP_PATH_MIG_STATE), 14448a51866fSRoland Dreier [IB_QPT_RC] = (IB_QP_PORT | 14458a51866fSRoland Dreier IB_QP_AV | 14468a51866fSRoland Dreier IB_QP_TIMEOUT | 14478a51866fSRoland Dreier IB_QP_RETRY_CNT | 14488a51866fSRoland Dreier IB_QP_RNR_RETRY | 14498a51866fSRoland Dreier IB_QP_MAX_QP_RD_ATOMIC | 14508a51866fSRoland Dreier IB_QP_MAX_DEST_RD_ATOMIC | 14518a51866fSRoland Dreier IB_QP_ALT_PATH | 14528a51866fSRoland Dreier IB_QP_ACCESS_FLAGS | 14538a51866fSRoland Dreier IB_QP_PKEY_INDEX | 14548a51866fSRoland Dreier IB_QP_MIN_RNR_TIMER | 14558a51866fSRoland Dreier IB_QP_PATH_MIG_STATE), 1456b42b63cfSSean Hefty [IB_QPT_XRC_INI] = (IB_QP_PORT | 1457b42b63cfSSean Hefty IB_QP_AV | 1458b42b63cfSSean Hefty IB_QP_TIMEOUT | 1459b42b63cfSSean Hefty IB_QP_RETRY_CNT | 1460b42b63cfSSean Hefty IB_QP_RNR_RETRY | 1461b42b63cfSSean Hefty IB_QP_MAX_QP_RD_ATOMIC | 1462b42b63cfSSean Hefty IB_QP_ALT_PATH | 1463b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS | 1464b42b63cfSSean Hefty IB_QP_PKEY_INDEX | 1465b42b63cfSSean Hefty IB_QP_PATH_MIG_STATE), 1466b42b63cfSSean Hefty [IB_QPT_XRC_TGT] = (IB_QP_PORT | 1467b42b63cfSSean Hefty IB_QP_AV | 1468b42b63cfSSean Hefty IB_QP_TIMEOUT | 1469b42b63cfSSean Hefty IB_QP_MAX_DEST_RD_ATOMIC | 1470b42b63cfSSean Hefty IB_QP_ALT_PATH | 1471b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS | 1472b42b63cfSSean Hefty IB_QP_PKEY_INDEX | 1473b42b63cfSSean Hefty IB_QP_MIN_RNR_TIMER | 1474b42b63cfSSean Hefty IB_QP_PATH_MIG_STATE), 14758a51866fSRoland Dreier [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | 14768a51866fSRoland Dreier IB_QP_QKEY), 14778a51866fSRoland Dreier [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | 14788a51866fSRoland Dreier IB_QP_QKEY), 14798a51866fSRoland Dreier } 14808a51866fSRoland Dreier } 14818a51866fSRoland Dreier }, 14828a51866fSRoland Dreier [IB_QPS_SQE] = { 14838a51866fSRoland Dreier [IB_QPS_RESET] = { .valid = 1 }, 14848a51866fSRoland Dreier [IB_QPS_ERR] = { .valid = 1 }, 14858a51866fSRoland Dreier [IB_QPS_RTS] = { 14868a51866fSRoland Dreier .valid = 1, 14878a51866fSRoland Dreier .opt_param = { 14888a51866fSRoland Dreier [IB_QPT_UD] = (IB_QP_CUR_STATE | 14898a51866fSRoland Dreier IB_QP_QKEY), 14908a51866fSRoland Dreier [IB_QPT_UC] = (IB_QP_CUR_STATE | 14918a51866fSRoland Dreier IB_QP_ACCESS_FLAGS), 14928a51866fSRoland Dreier [IB_QPT_SMI] = (IB_QP_CUR_STATE | 14938a51866fSRoland Dreier IB_QP_QKEY), 14948a51866fSRoland Dreier [IB_QPT_GSI] = (IB_QP_CUR_STATE | 14958a51866fSRoland Dreier IB_QP_QKEY), 14968a51866fSRoland Dreier } 14978a51866fSRoland Dreier } 14988a51866fSRoland Dreier }, 14998a51866fSRoland Dreier [IB_QPS_ERR] = { 15008a51866fSRoland Dreier [IB_QPS_RESET] = { .valid = 1 }, 15018a51866fSRoland Dreier [IB_QPS_ERR] = { .valid = 1 } 15028a51866fSRoland Dreier } 15038a51866fSRoland Dreier }; 15048a51866fSRoland Dreier 150519b1f540SLeon Romanovsky bool ib_modify_qp_is_ok(enum ib_qp_state cur_state, enum ib_qp_state next_state, 1506dd5f03beSMatan Barak enum ib_qp_type type, enum ib_qp_attr_mask mask, 1507dd5f03beSMatan Barak enum rdma_link_layer ll) 15088a51866fSRoland Dreier { 15098a51866fSRoland Dreier enum ib_qp_attr_mask req_param, opt_param; 15108a51866fSRoland Dreier 15118a51866fSRoland Dreier if (mask & IB_QP_CUR_STATE && 15128a51866fSRoland Dreier cur_state != IB_QPS_RTR && cur_state != IB_QPS_RTS && 15138a51866fSRoland Dreier cur_state != IB_QPS_SQD && cur_state != IB_QPS_SQE) 151419b1f540SLeon Romanovsky return false; 15158a51866fSRoland Dreier 15168a51866fSRoland Dreier if (!qp_state_table[cur_state][next_state].valid) 151719b1f540SLeon Romanovsky return false; 15188a51866fSRoland Dreier 15198a51866fSRoland Dreier req_param = qp_state_table[cur_state][next_state].req_param[type]; 15208a51866fSRoland Dreier opt_param = qp_state_table[cur_state][next_state].opt_param[type]; 15218a51866fSRoland Dreier 15228a51866fSRoland Dreier if ((mask & req_param) != req_param) 152319b1f540SLeon Romanovsky return false; 15248a51866fSRoland Dreier 15258a51866fSRoland Dreier if (mask & ~(req_param | opt_param | IB_QP_STATE)) 152619b1f540SLeon Romanovsky return false; 15278a51866fSRoland Dreier 152819b1f540SLeon Romanovsky return true; 15298a51866fSRoland Dreier } 15308a51866fSRoland Dreier EXPORT_SYMBOL(ib_modify_qp_is_ok); 15318a51866fSRoland Dreier 1532947c99ecSParav Pandit /** 1533947c99ecSParav Pandit * ib_resolve_eth_dmac - Resolve destination mac address 1534947c99ecSParav Pandit * @device: Device to consider 1535947c99ecSParav Pandit * @ah_attr: address handle attribute which describes the 1536947c99ecSParav Pandit * source and destination parameters 1537947c99ecSParav Pandit * ib_resolve_eth_dmac() resolves destination mac address and L3 hop limit It 1538947c99ecSParav Pandit * returns 0 on success or appropriate error code. It initializes the 1539947c99ecSParav Pandit * necessary ah_attr fields when call is successful. 1540947c99ecSParav Pandit */ 1541c0348eb0SParav Pandit static int ib_resolve_eth_dmac(struct ib_device *device, 154290898850SDasaratharaman Chandramouli struct rdma_ah_attr *ah_attr) 1543ed4c54e5SOr Gerlitz { 1544ed4c54e5SOr Gerlitz int ret = 0; 1545d8966fcdSDasaratharaman Chandramouli 15469636a56fSNoa Osherovich if (rdma_is_multicast_addr((struct in6_addr *)ah_attr->grh.dgid.raw)) { 15479636a56fSNoa Osherovich if (ipv6_addr_v4mapped((struct in6_addr *)ah_attr->grh.dgid.raw)) { 15489636a56fSNoa Osherovich __be32 addr = 0; 15499636a56fSNoa Osherovich 15509636a56fSNoa Osherovich memcpy(&addr, ah_attr->grh.dgid.raw + 12, 4); 15519636a56fSNoa Osherovich ip_eth_mc_map(addr, (char *)ah_attr->roce.dmac); 15529636a56fSNoa Osherovich } else { 15539636a56fSNoa Osherovich ipv6_eth_mc_map((struct in6_addr *)ah_attr->grh.dgid.raw, 15549636a56fSNoa Osherovich (char *)ah_attr->roce.dmac); 15559636a56fSNoa Osherovich } 1556ed4c54e5SOr Gerlitz } else { 15571060f865SParav Pandit ret = ib_resolve_unicast_gid_dmac(device, ah_attr); 1558ed4c54e5SOr Gerlitz } 1559ed4c54e5SOr Gerlitz return ret; 1560ed4c54e5SOr Gerlitz } 1561ed4c54e5SOr Gerlitz 15628d9ec9adSJason Gunthorpe static bool is_qp_type_connected(const struct ib_qp *qp) 15638d9ec9adSJason Gunthorpe { 15648d9ec9adSJason Gunthorpe return (qp->qp_type == IB_QPT_UC || 15658d9ec9adSJason Gunthorpe qp->qp_type == IB_QPT_RC || 15668d9ec9adSJason Gunthorpe qp->qp_type == IB_QPT_XRC_INI || 15678d9ec9adSJason Gunthorpe qp->qp_type == IB_QPT_XRC_TGT); 15688d9ec9adSJason Gunthorpe } 15698d9ec9adSJason Gunthorpe 1570a512c2fbSParav Pandit /** 1571b96ac05aSParav Pandit * IB core internal function to perform QP attributes modification. 1572a512c2fbSParav Pandit */ 1573b96ac05aSParav Pandit static int _ib_modify_qp(struct ib_qp *qp, struct ib_qp_attr *attr, 1574a512c2fbSParav Pandit int attr_mask, struct ib_udata *udata) 1575a512c2fbSParav Pandit { 1576727b7e9aSMajd Dibbiny u8 port = attr_mask & IB_QP_PORT ? attr->port_num : qp->port; 15778d9ec9adSJason Gunthorpe const struct ib_gid_attr *old_sgid_attr_av; 15788d9ec9adSJason Gunthorpe const struct ib_gid_attr *old_sgid_attr_alt_av; 1579a512c2fbSParav Pandit int ret; 1580a512c2fbSParav Pandit 15818d9ec9adSJason Gunthorpe /* 15828d9ec9adSJason Gunthorpe * Today the core code can only handle alternate paths and APM for IB 15838d9ec9adSJason Gunthorpe * ban them in roce mode. 15848d9ec9adSJason Gunthorpe */ 15858d9ec9adSJason Gunthorpe if (attr_mask & IB_QP_ALT_PATH && 15868d9ec9adSJason Gunthorpe !rdma_protocol_ib(qp->device, attr->alt_ah_attr.port_num)) 15878d9ec9adSJason Gunthorpe return -EINVAL; 15888d9ec9adSJason Gunthorpe 15898d9ec9adSJason Gunthorpe if (attr_mask & IB_QP_AV) { 15908d9ec9adSJason Gunthorpe ret = rdma_fill_sgid_attr(qp->device, &attr->ah_attr, 15918d9ec9adSJason Gunthorpe &old_sgid_attr_av); 15928d9ec9adSJason Gunthorpe if (ret) 15938d9ec9adSJason Gunthorpe return ret; 15948d9ec9adSJason Gunthorpe } 15958d9ec9adSJason Gunthorpe if (attr_mask & IB_QP_ALT_PATH) { 15961a1f460fSJason Gunthorpe /* 15971a1f460fSJason Gunthorpe * FIXME: This does not track the migration state, so if the 15981a1f460fSJason Gunthorpe * user loads a new alternate path after the HW has migrated 15991a1f460fSJason Gunthorpe * from primary->alternate we will keep the wrong 16001a1f460fSJason Gunthorpe * references. This is OK for IB because the reference 16011a1f460fSJason Gunthorpe * counting does not serve any functional purpose. 16021a1f460fSJason Gunthorpe */ 16038d9ec9adSJason Gunthorpe ret = rdma_fill_sgid_attr(qp->device, &attr->alt_ah_attr, 16048d9ec9adSJason Gunthorpe &old_sgid_attr_alt_av); 16058d9ec9adSJason Gunthorpe if (ret) 16068d9ec9adSJason Gunthorpe goto out_av; 16078d9ec9adSJason Gunthorpe } 16088d9ec9adSJason Gunthorpe 16098d9ec9adSJason Gunthorpe /* 16108d9ec9adSJason Gunthorpe * If the user provided the qp_attr then we have to resolve it. Kernel 16118d9ec9adSJason Gunthorpe * users have to provide already resolved rdma_ah_attr's 16128d9ec9adSJason Gunthorpe */ 16138d9ec9adSJason Gunthorpe if (udata && (attr_mask & IB_QP_AV) && 16148d9ec9adSJason Gunthorpe attr->ah_attr.type == RDMA_AH_ATTR_TYPE_ROCE && 16158d9ec9adSJason Gunthorpe is_qp_type_connected(qp)) { 16168d9ec9adSJason Gunthorpe ret = ib_resolve_eth_dmac(qp->device, &attr->ah_attr); 16178d9ec9adSJason Gunthorpe if (ret) 16188d9ec9adSJason Gunthorpe goto out; 16198d9ec9adSJason Gunthorpe } 16208d9ec9adSJason Gunthorpe 1621727b7e9aSMajd Dibbiny if (rdma_ib_or_roce(qp->device, port)) { 1622727b7e9aSMajd Dibbiny if (attr_mask & IB_QP_RQ_PSN && attr->rq_psn & ~0xffffff) { 1623727b7e9aSMajd Dibbiny pr_warn("%s: %s rq_psn overflow, masking to 24 bits\n", 1624727b7e9aSMajd Dibbiny __func__, qp->device->name); 1625727b7e9aSMajd Dibbiny attr->rq_psn &= 0xffffff; 1626727b7e9aSMajd Dibbiny } 1627727b7e9aSMajd Dibbiny 1628727b7e9aSMajd Dibbiny if (attr_mask & IB_QP_SQ_PSN && attr->sq_psn & ~0xffffff) { 1629727b7e9aSMajd Dibbiny pr_warn("%s: %s sq_psn overflow, masking to 24 bits\n", 1630727b7e9aSMajd Dibbiny __func__, qp->device->name); 1631727b7e9aSMajd Dibbiny attr->sq_psn &= 0xffffff; 1632727b7e9aSMajd Dibbiny } 1633727b7e9aSMajd Dibbiny } 1634727b7e9aSMajd Dibbiny 1635498ca3c8SNoa Osherovich ret = ib_security_modify_qp(qp, attr, attr_mask, udata); 16361a1f460fSJason Gunthorpe if (ret) 16371a1f460fSJason Gunthorpe goto out; 16381a1f460fSJason Gunthorpe 16391a1f460fSJason Gunthorpe if (attr_mask & IB_QP_PORT) 1640498ca3c8SNoa Osherovich qp->port = attr->port_num; 16411a1f460fSJason Gunthorpe if (attr_mask & IB_QP_AV) 16421a1f460fSJason Gunthorpe qp->av_sgid_attr = 16431a1f460fSJason Gunthorpe rdma_update_sgid_attr(&attr->ah_attr, qp->av_sgid_attr); 16441a1f460fSJason Gunthorpe if (attr_mask & IB_QP_ALT_PATH) 16451a1f460fSJason Gunthorpe qp->alt_path_sgid_attr = rdma_update_sgid_attr( 16461a1f460fSJason Gunthorpe &attr->alt_ah_attr, qp->alt_path_sgid_attr); 1647498ca3c8SNoa Osherovich 16488d9ec9adSJason Gunthorpe out: 16498d9ec9adSJason Gunthorpe if (attr_mask & IB_QP_ALT_PATH) 16508d9ec9adSJason Gunthorpe rdma_unfill_sgid_attr(&attr->alt_ah_attr, old_sgid_attr_alt_av); 16518d9ec9adSJason Gunthorpe out_av: 16528d9ec9adSJason Gunthorpe if (attr_mask & IB_QP_AV) 16538d9ec9adSJason Gunthorpe rdma_unfill_sgid_attr(&attr->ah_attr, old_sgid_attr_av); 1654498ca3c8SNoa Osherovich return ret; 1655a512c2fbSParav Pandit } 1656b96ac05aSParav Pandit 1657b96ac05aSParav Pandit /** 1658b96ac05aSParav Pandit * ib_modify_qp_with_udata - Modifies the attributes for the specified QP. 1659b96ac05aSParav Pandit * @ib_qp: The QP to modify. 1660b96ac05aSParav Pandit * @attr: On input, specifies the QP attributes to modify. On output, 1661b96ac05aSParav Pandit * the current values of selected QP attributes are returned. 1662b96ac05aSParav Pandit * @attr_mask: A bit-mask used to specify which attributes of the QP 1663b96ac05aSParav Pandit * are being modified. 1664b96ac05aSParav Pandit * @udata: pointer to user's input output buffer information 1665b96ac05aSParav Pandit * are being modified. 1666b96ac05aSParav Pandit * It returns 0 on success and returns appropriate error code on error. 1667b96ac05aSParav Pandit */ 1668b96ac05aSParav Pandit int ib_modify_qp_with_udata(struct ib_qp *ib_qp, struct ib_qp_attr *attr, 1669b96ac05aSParav Pandit int attr_mask, struct ib_udata *udata) 1670b96ac05aSParav Pandit { 16718d9ec9adSJason Gunthorpe return _ib_modify_qp(ib_qp->real_qp, attr, attr_mask, udata); 1672b96ac05aSParav Pandit } 1673a512c2fbSParav Pandit EXPORT_SYMBOL(ib_modify_qp_with_udata); 1674a512c2fbSParav Pandit 1675d4186194SYuval Shaia int ib_get_eth_speed(struct ib_device *dev, u8 port_num, u8 *speed, u8 *width) 1676d4186194SYuval Shaia { 1677d4186194SYuval Shaia int rc; 1678d4186194SYuval Shaia u32 netdev_speed; 1679d4186194SYuval Shaia struct net_device *netdev; 1680d4186194SYuval Shaia struct ethtool_link_ksettings lksettings; 1681d4186194SYuval Shaia 1682d4186194SYuval Shaia if (rdma_port_get_link_layer(dev, port_num) != IB_LINK_LAYER_ETHERNET) 1683d4186194SYuval Shaia return -EINVAL; 1684d4186194SYuval Shaia 1685d4186194SYuval Shaia if (!dev->get_netdev) 1686d4186194SYuval Shaia return -EOPNOTSUPP; 1687d4186194SYuval Shaia 1688d4186194SYuval Shaia netdev = dev->get_netdev(dev, port_num); 1689d4186194SYuval Shaia if (!netdev) 1690d4186194SYuval Shaia return -ENODEV; 1691d4186194SYuval Shaia 1692d4186194SYuval Shaia rtnl_lock(); 1693d4186194SYuval Shaia rc = __ethtool_get_link_ksettings(netdev, &lksettings); 1694d4186194SYuval Shaia rtnl_unlock(); 1695d4186194SYuval Shaia 1696d4186194SYuval Shaia dev_put(netdev); 1697d4186194SYuval Shaia 1698d4186194SYuval Shaia if (!rc) { 1699d4186194SYuval Shaia netdev_speed = lksettings.base.speed; 1700d4186194SYuval Shaia } else { 1701d4186194SYuval Shaia netdev_speed = SPEED_1000; 1702d4186194SYuval Shaia pr_warn("%s speed is unknown, defaulting to %d\n", netdev->name, 1703d4186194SYuval Shaia netdev_speed); 1704d4186194SYuval Shaia } 1705d4186194SYuval Shaia 1706d4186194SYuval Shaia if (netdev_speed <= SPEED_1000) { 1707d4186194SYuval Shaia *width = IB_WIDTH_1X; 1708d4186194SYuval Shaia *speed = IB_SPEED_SDR; 1709d4186194SYuval Shaia } else if (netdev_speed <= SPEED_10000) { 1710d4186194SYuval Shaia *width = IB_WIDTH_1X; 1711d4186194SYuval Shaia *speed = IB_SPEED_FDR10; 1712d4186194SYuval Shaia } else if (netdev_speed <= SPEED_20000) { 1713d4186194SYuval Shaia *width = IB_WIDTH_4X; 1714d4186194SYuval Shaia *speed = IB_SPEED_DDR; 1715d4186194SYuval Shaia } else if (netdev_speed <= SPEED_25000) { 1716d4186194SYuval Shaia *width = IB_WIDTH_1X; 1717d4186194SYuval Shaia *speed = IB_SPEED_EDR; 1718d4186194SYuval Shaia } else if (netdev_speed <= SPEED_40000) { 1719d4186194SYuval Shaia *width = IB_WIDTH_4X; 1720d4186194SYuval Shaia *speed = IB_SPEED_FDR10; 1721d4186194SYuval Shaia } else { 1722d4186194SYuval Shaia *width = IB_WIDTH_4X; 1723d4186194SYuval Shaia *speed = IB_SPEED_EDR; 1724d4186194SYuval Shaia } 1725d4186194SYuval Shaia 1726d4186194SYuval Shaia return 0; 1727d4186194SYuval Shaia } 1728d4186194SYuval Shaia EXPORT_SYMBOL(ib_get_eth_speed); 1729d4186194SYuval Shaia 17301da177e4SLinus Torvalds int ib_modify_qp(struct ib_qp *qp, 17311da177e4SLinus Torvalds struct ib_qp_attr *qp_attr, 17321da177e4SLinus Torvalds int qp_attr_mask) 17331da177e4SLinus Torvalds { 1734b96ac05aSParav Pandit return _ib_modify_qp(qp->real_qp, qp_attr, qp_attr_mask, NULL); 17351da177e4SLinus Torvalds } 17361da177e4SLinus Torvalds EXPORT_SYMBOL(ib_modify_qp); 17371da177e4SLinus Torvalds 17381da177e4SLinus Torvalds int ib_query_qp(struct ib_qp *qp, 17391da177e4SLinus Torvalds struct ib_qp_attr *qp_attr, 17401da177e4SLinus Torvalds int qp_attr_mask, 17411da177e4SLinus Torvalds struct ib_qp_init_attr *qp_init_attr) 17421da177e4SLinus Torvalds { 17438d9ec9adSJason Gunthorpe qp_attr->ah_attr.grh.sgid_attr = NULL; 17448d9ec9adSJason Gunthorpe qp_attr->alt_ah_attr.grh.sgid_attr = NULL; 17458d9ec9adSJason Gunthorpe 17461da177e4SLinus Torvalds return qp->device->query_qp ? 17470e0ec7e0SSean Hefty qp->device->query_qp(qp->real_qp, qp_attr, qp_attr_mask, qp_init_attr) : 174887915bf8SLeon Romanovsky -EOPNOTSUPP; 17491da177e4SLinus Torvalds } 17501da177e4SLinus Torvalds EXPORT_SYMBOL(ib_query_qp); 17511da177e4SLinus Torvalds 17520e0ec7e0SSean Hefty int ib_close_qp(struct ib_qp *qp) 17530e0ec7e0SSean Hefty { 17540e0ec7e0SSean Hefty struct ib_qp *real_qp; 17550e0ec7e0SSean Hefty unsigned long flags; 17560e0ec7e0SSean Hefty 17570e0ec7e0SSean Hefty real_qp = qp->real_qp; 17580e0ec7e0SSean Hefty if (real_qp == qp) 17590e0ec7e0SSean Hefty return -EINVAL; 17600e0ec7e0SSean Hefty 17610e0ec7e0SSean Hefty spin_lock_irqsave(&real_qp->device->event_handler_lock, flags); 17620e0ec7e0SSean Hefty list_del(&qp->open_list); 17630e0ec7e0SSean Hefty spin_unlock_irqrestore(&real_qp->device->event_handler_lock, flags); 17640e0ec7e0SSean Hefty 17650e0ec7e0SSean Hefty atomic_dec(&real_qp->usecnt); 17664a50881bSMoni Shoua if (qp->qp_sec) 1767d291f1a6SDaniel Jurgens ib_close_shared_qp_security(qp->qp_sec); 17680e0ec7e0SSean Hefty kfree(qp); 17690e0ec7e0SSean Hefty 17700e0ec7e0SSean Hefty return 0; 17710e0ec7e0SSean Hefty } 17720e0ec7e0SSean Hefty EXPORT_SYMBOL(ib_close_qp); 17730e0ec7e0SSean Hefty 17740e0ec7e0SSean Hefty static int __ib_destroy_shared_qp(struct ib_qp *qp) 17750e0ec7e0SSean Hefty { 17760e0ec7e0SSean Hefty struct ib_xrcd *xrcd; 17770e0ec7e0SSean Hefty struct ib_qp *real_qp; 17780e0ec7e0SSean Hefty int ret; 17790e0ec7e0SSean Hefty 17800e0ec7e0SSean Hefty real_qp = qp->real_qp; 17810e0ec7e0SSean Hefty xrcd = real_qp->xrcd; 17820e0ec7e0SSean Hefty 17830e0ec7e0SSean Hefty mutex_lock(&xrcd->tgt_qp_mutex); 17840e0ec7e0SSean Hefty ib_close_qp(qp); 17850e0ec7e0SSean Hefty if (atomic_read(&real_qp->usecnt) == 0) 17860e0ec7e0SSean Hefty list_del(&real_qp->xrcd_list); 17870e0ec7e0SSean Hefty else 17880e0ec7e0SSean Hefty real_qp = NULL; 17890e0ec7e0SSean Hefty mutex_unlock(&xrcd->tgt_qp_mutex); 17900e0ec7e0SSean Hefty 17910e0ec7e0SSean Hefty if (real_qp) { 17920e0ec7e0SSean Hefty ret = ib_destroy_qp(real_qp); 17930e0ec7e0SSean Hefty if (!ret) 17940e0ec7e0SSean Hefty atomic_dec(&xrcd->usecnt); 17950e0ec7e0SSean Hefty else 17960e0ec7e0SSean Hefty __ib_insert_xrcd_qp(xrcd, real_qp); 17970e0ec7e0SSean Hefty } 17980e0ec7e0SSean Hefty 17990e0ec7e0SSean Hefty return 0; 18000e0ec7e0SSean Hefty } 18010e0ec7e0SSean Hefty 18021da177e4SLinus Torvalds int ib_destroy_qp(struct ib_qp *qp) 18031da177e4SLinus Torvalds { 18041a1f460fSJason Gunthorpe const struct ib_gid_attr *alt_path_sgid_attr = qp->alt_path_sgid_attr; 18051a1f460fSJason Gunthorpe const struct ib_gid_attr *av_sgid_attr = qp->av_sgid_attr; 18061da177e4SLinus Torvalds struct ib_pd *pd; 18071da177e4SLinus Torvalds struct ib_cq *scq, *rcq; 18081da177e4SLinus Torvalds struct ib_srq *srq; 1809a9017e23SYishai Hadas struct ib_rwq_ind_table *ind_tbl; 1810d291f1a6SDaniel Jurgens struct ib_qp_security *sec; 18111da177e4SLinus Torvalds int ret; 18121da177e4SLinus Torvalds 1813fffb0383SChristoph Hellwig WARN_ON_ONCE(qp->mrs_used > 0); 1814fffb0383SChristoph Hellwig 18150e0ec7e0SSean Hefty if (atomic_read(&qp->usecnt)) 18160e0ec7e0SSean Hefty return -EBUSY; 18170e0ec7e0SSean Hefty 18180e0ec7e0SSean Hefty if (qp->real_qp != qp) 18190e0ec7e0SSean Hefty return __ib_destroy_shared_qp(qp); 18200e0ec7e0SSean Hefty 18211da177e4SLinus Torvalds pd = qp->pd; 18221da177e4SLinus Torvalds scq = qp->send_cq; 18231da177e4SLinus Torvalds rcq = qp->recv_cq; 18241da177e4SLinus Torvalds srq = qp->srq; 1825a9017e23SYishai Hadas ind_tbl = qp->rwq_ind_tbl; 1826d291f1a6SDaniel Jurgens sec = qp->qp_sec; 1827d291f1a6SDaniel Jurgens if (sec) 1828d291f1a6SDaniel Jurgens ib_destroy_qp_security_begin(sec); 18291da177e4SLinus Torvalds 1830a060b562SChristoph Hellwig if (!qp->uobject) 1831a060b562SChristoph Hellwig rdma_rw_cleanup_mrs(qp); 1832a060b562SChristoph Hellwig 183378a0cd64SLeon Romanovsky rdma_restrack_del(&qp->res); 18341da177e4SLinus Torvalds ret = qp->device->destroy_qp(qp); 18351da177e4SLinus Torvalds if (!ret) { 18361a1f460fSJason Gunthorpe if (alt_path_sgid_attr) 18371a1f460fSJason Gunthorpe rdma_put_gid_attr(alt_path_sgid_attr); 18381a1f460fSJason Gunthorpe if (av_sgid_attr) 18391a1f460fSJason Gunthorpe rdma_put_gid_attr(av_sgid_attr); 1840b42b63cfSSean Hefty if (pd) 18411da177e4SLinus Torvalds atomic_dec(&pd->usecnt); 1842b42b63cfSSean Hefty if (scq) 18431da177e4SLinus Torvalds atomic_dec(&scq->usecnt); 1844b42b63cfSSean Hefty if (rcq) 18451da177e4SLinus Torvalds atomic_dec(&rcq->usecnt); 18461da177e4SLinus Torvalds if (srq) 18471da177e4SLinus Torvalds atomic_dec(&srq->usecnt); 1848a9017e23SYishai Hadas if (ind_tbl) 1849a9017e23SYishai Hadas atomic_dec(&ind_tbl->usecnt); 1850d291f1a6SDaniel Jurgens if (sec) 1851d291f1a6SDaniel Jurgens ib_destroy_qp_security_end(sec); 1852d291f1a6SDaniel Jurgens } else { 1853d291f1a6SDaniel Jurgens if (sec) 1854d291f1a6SDaniel Jurgens ib_destroy_qp_security_abort(sec); 18551da177e4SLinus Torvalds } 18561da177e4SLinus Torvalds 18571da177e4SLinus Torvalds return ret; 18581da177e4SLinus Torvalds } 18591da177e4SLinus Torvalds EXPORT_SYMBOL(ib_destroy_qp); 18601da177e4SLinus Torvalds 18611da177e4SLinus Torvalds /* Completion queues */ 18621da177e4SLinus Torvalds 18631da177e4SLinus Torvalds struct ib_cq *ib_create_cq(struct ib_device *device, 18641da177e4SLinus Torvalds ib_comp_handler comp_handler, 18651da177e4SLinus Torvalds void (*event_handler)(struct ib_event *, void *), 18668e37210bSMatan Barak void *cq_context, 18678e37210bSMatan Barak const struct ib_cq_init_attr *cq_attr) 18681da177e4SLinus Torvalds { 18691da177e4SLinus Torvalds struct ib_cq *cq; 18701da177e4SLinus Torvalds 18718e37210bSMatan Barak cq = device->create_cq(device, cq_attr, NULL, NULL); 18721da177e4SLinus Torvalds 18731da177e4SLinus Torvalds if (!IS_ERR(cq)) { 18741da177e4SLinus Torvalds cq->device = device; 1875b5e81bf5SRoland Dreier cq->uobject = NULL; 18761da177e4SLinus Torvalds cq->comp_handler = comp_handler; 18771da177e4SLinus Torvalds cq->event_handler = event_handler; 18781da177e4SLinus Torvalds cq->cq_context = cq_context; 18791da177e4SLinus Torvalds atomic_set(&cq->usecnt, 0); 188008f294a1SLeon Romanovsky cq->res.type = RDMA_RESTRACK_CQ; 188108f294a1SLeon Romanovsky rdma_restrack_add(&cq->res); 18821da177e4SLinus Torvalds } 18831da177e4SLinus Torvalds 18841da177e4SLinus Torvalds return cq; 18851da177e4SLinus Torvalds } 18861da177e4SLinus Torvalds EXPORT_SYMBOL(ib_create_cq); 18871da177e4SLinus Torvalds 18884190b4e9SLeon Romanovsky int rdma_set_cq_moderation(struct ib_cq *cq, u16 cq_count, u16 cq_period) 18892dd57162SEli Cohen { 18902dd57162SEli Cohen return cq->device->modify_cq ? 189187915bf8SLeon Romanovsky cq->device->modify_cq(cq, cq_count, cq_period) : -EOPNOTSUPP; 18922dd57162SEli Cohen } 18934190b4e9SLeon Romanovsky EXPORT_SYMBOL(rdma_set_cq_moderation); 18942dd57162SEli Cohen 18951da177e4SLinus Torvalds int ib_destroy_cq(struct ib_cq *cq) 18961da177e4SLinus Torvalds { 18971da177e4SLinus Torvalds if (atomic_read(&cq->usecnt)) 18981da177e4SLinus Torvalds return -EBUSY; 18991da177e4SLinus Torvalds 190008f294a1SLeon Romanovsky rdma_restrack_del(&cq->res); 19011da177e4SLinus Torvalds return cq->device->destroy_cq(cq); 19021da177e4SLinus Torvalds } 19031da177e4SLinus Torvalds EXPORT_SYMBOL(ib_destroy_cq); 19041da177e4SLinus Torvalds 1905a74cd4afSRoland Dreier int ib_resize_cq(struct ib_cq *cq, int cqe) 19061da177e4SLinus Torvalds { 190740de2e54SRoland Dreier return cq->device->resize_cq ? 190887915bf8SLeon Romanovsky cq->device->resize_cq(cq, cqe, NULL) : -EOPNOTSUPP; 19091da177e4SLinus Torvalds } 19101da177e4SLinus Torvalds EXPORT_SYMBOL(ib_resize_cq); 19111da177e4SLinus Torvalds 19121da177e4SLinus Torvalds /* Memory regions */ 19131da177e4SLinus Torvalds 19141da177e4SLinus Torvalds int ib_dereg_mr(struct ib_mr *mr) 19151da177e4SLinus Torvalds { 1916ab67ed8dSChristoph Hellwig struct ib_pd *pd = mr->pd; 1917be934ccaSAriel Levkovich struct ib_dm *dm = mr->dm; 19181da177e4SLinus Torvalds int ret; 19191da177e4SLinus Torvalds 1920fccec5b8SSteve Wise rdma_restrack_del(&mr->res); 19211da177e4SLinus Torvalds ret = mr->device->dereg_mr(mr); 1922be934ccaSAriel Levkovich if (!ret) { 19231da177e4SLinus Torvalds atomic_dec(&pd->usecnt); 1924be934ccaSAriel Levkovich if (dm) 1925be934ccaSAriel Levkovich atomic_dec(&dm->usecnt); 1926be934ccaSAriel Levkovich } 19271da177e4SLinus Torvalds 19281da177e4SLinus Torvalds return ret; 19291da177e4SLinus Torvalds } 19301da177e4SLinus Torvalds EXPORT_SYMBOL(ib_dereg_mr); 19311da177e4SLinus Torvalds 19329bee178bSSagi Grimberg /** 19339bee178bSSagi Grimberg * ib_alloc_mr() - Allocates a memory region 19349bee178bSSagi Grimberg * @pd: protection domain associated with the region 19359bee178bSSagi Grimberg * @mr_type: memory region type 19369bee178bSSagi Grimberg * @max_num_sg: maximum sg entries available for registration. 19379bee178bSSagi Grimberg * 19389bee178bSSagi Grimberg * Notes: 19399bee178bSSagi Grimberg * Memory registeration page/sg lists must not exceed max_num_sg. 19409bee178bSSagi Grimberg * For mr_type IB_MR_TYPE_MEM_REG, the total length cannot exceed 19419bee178bSSagi Grimberg * max_num_sg * used_page_size. 19429bee178bSSagi Grimberg * 19439bee178bSSagi Grimberg */ 19449bee178bSSagi Grimberg struct ib_mr *ib_alloc_mr(struct ib_pd *pd, 19459bee178bSSagi Grimberg enum ib_mr_type mr_type, 19469bee178bSSagi Grimberg u32 max_num_sg) 194717cd3a2dSSagi Grimberg { 194817cd3a2dSSagi Grimberg struct ib_mr *mr; 194917cd3a2dSSagi Grimberg 1950d9f272c5SSagi Grimberg if (!pd->device->alloc_mr) 195187915bf8SLeon Romanovsky return ERR_PTR(-EOPNOTSUPP); 195217cd3a2dSSagi Grimberg 1953d9f272c5SSagi Grimberg mr = pd->device->alloc_mr(pd, mr_type, max_num_sg); 195417cd3a2dSSagi Grimberg if (!IS_ERR(mr)) { 195517cd3a2dSSagi Grimberg mr->device = pd->device; 195617cd3a2dSSagi Grimberg mr->pd = pd; 195754e7e48bSAriel Levkovich mr->dm = NULL; 195817cd3a2dSSagi Grimberg mr->uobject = NULL; 195917cd3a2dSSagi Grimberg atomic_inc(&pd->usecnt); 1960d4a85c30SSteve Wise mr->need_inval = false; 1961fccec5b8SSteve Wise mr->res.type = RDMA_RESTRACK_MR; 1962fccec5b8SSteve Wise rdma_restrack_add(&mr->res); 196317cd3a2dSSagi Grimberg } 196417cd3a2dSSagi Grimberg 196517cd3a2dSSagi Grimberg return mr; 196617cd3a2dSSagi Grimberg } 19679bee178bSSagi Grimberg EXPORT_SYMBOL(ib_alloc_mr); 196800f7ec36SSteve Wise 19691da177e4SLinus Torvalds /* "Fast" memory regions */ 19701da177e4SLinus Torvalds 19711da177e4SLinus Torvalds struct ib_fmr *ib_alloc_fmr(struct ib_pd *pd, 19721da177e4SLinus Torvalds int mr_access_flags, 19731da177e4SLinus Torvalds struct ib_fmr_attr *fmr_attr) 19741da177e4SLinus Torvalds { 19751da177e4SLinus Torvalds struct ib_fmr *fmr; 19761da177e4SLinus Torvalds 19771da177e4SLinus Torvalds if (!pd->device->alloc_fmr) 197887915bf8SLeon Romanovsky return ERR_PTR(-EOPNOTSUPP); 19791da177e4SLinus Torvalds 19801da177e4SLinus Torvalds fmr = pd->device->alloc_fmr(pd, mr_access_flags, fmr_attr); 19811da177e4SLinus Torvalds if (!IS_ERR(fmr)) { 19821da177e4SLinus Torvalds fmr->device = pd->device; 19831da177e4SLinus Torvalds fmr->pd = pd; 19841da177e4SLinus Torvalds atomic_inc(&pd->usecnt); 19851da177e4SLinus Torvalds } 19861da177e4SLinus Torvalds 19871da177e4SLinus Torvalds return fmr; 19881da177e4SLinus Torvalds } 19891da177e4SLinus Torvalds EXPORT_SYMBOL(ib_alloc_fmr); 19901da177e4SLinus Torvalds 19911da177e4SLinus Torvalds int ib_unmap_fmr(struct list_head *fmr_list) 19921da177e4SLinus Torvalds { 19931da177e4SLinus Torvalds struct ib_fmr *fmr; 19941da177e4SLinus Torvalds 19951da177e4SLinus Torvalds if (list_empty(fmr_list)) 19961da177e4SLinus Torvalds return 0; 19971da177e4SLinus Torvalds 19981da177e4SLinus Torvalds fmr = list_entry(fmr_list->next, struct ib_fmr, list); 19991da177e4SLinus Torvalds return fmr->device->unmap_fmr(fmr_list); 20001da177e4SLinus Torvalds } 20011da177e4SLinus Torvalds EXPORT_SYMBOL(ib_unmap_fmr); 20021da177e4SLinus Torvalds 20031da177e4SLinus Torvalds int ib_dealloc_fmr(struct ib_fmr *fmr) 20041da177e4SLinus Torvalds { 20051da177e4SLinus Torvalds struct ib_pd *pd; 20061da177e4SLinus Torvalds int ret; 20071da177e4SLinus Torvalds 20081da177e4SLinus Torvalds pd = fmr->pd; 20091da177e4SLinus Torvalds ret = fmr->device->dealloc_fmr(fmr); 20101da177e4SLinus Torvalds if (!ret) 20111da177e4SLinus Torvalds atomic_dec(&pd->usecnt); 20121da177e4SLinus Torvalds 20131da177e4SLinus Torvalds return ret; 20141da177e4SLinus Torvalds } 20151da177e4SLinus Torvalds EXPORT_SYMBOL(ib_dealloc_fmr); 20161da177e4SLinus Torvalds 20171da177e4SLinus Torvalds /* Multicast groups */ 20181da177e4SLinus Torvalds 201952363335SNoa Osherovich static bool is_valid_mcast_lid(struct ib_qp *qp, u16 lid) 202052363335SNoa Osherovich { 202152363335SNoa Osherovich struct ib_qp_init_attr init_attr = {}; 202252363335SNoa Osherovich struct ib_qp_attr attr = {}; 202352363335SNoa Osherovich int num_eth_ports = 0; 202452363335SNoa Osherovich int port; 202552363335SNoa Osherovich 202652363335SNoa Osherovich /* If QP state >= init, it is assigned to a port and we can check this 202752363335SNoa Osherovich * port only. 202852363335SNoa Osherovich */ 202952363335SNoa Osherovich if (!ib_query_qp(qp, &attr, IB_QP_STATE | IB_QP_PORT, &init_attr)) { 203052363335SNoa Osherovich if (attr.qp_state >= IB_QPS_INIT) { 2031e6f9bc34SAlex Estrin if (rdma_port_get_link_layer(qp->device, attr.port_num) != 203252363335SNoa Osherovich IB_LINK_LAYER_INFINIBAND) 203352363335SNoa Osherovich return true; 203452363335SNoa Osherovich goto lid_check; 203552363335SNoa Osherovich } 203652363335SNoa Osherovich } 203752363335SNoa Osherovich 203852363335SNoa Osherovich /* Can't get a quick answer, iterate over all ports */ 203952363335SNoa Osherovich for (port = 0; port < qp->device->phys_port_cnt; port++) 2040e6f9bc34SAlex Estrin if (rdma_port_get_link_layer(qp->device, port) != 204152363335SNoa Osherovich IB_LINK_LAYER_INFINIBAND) 204252363335SNoa Osherovich num_eth_ports++; 204352363335SNoa Osherovich 204452363335SNoa Osherovich /* If we have at lease one Ethernet port, RoCE annex declares that 204552363335SNoa Osherovich * multicast LID should be ignored. We can't tell at this step if the 204652363335SNoa Osherovich * QP belongs to an IB or Ethernet port. 204752363335SNoa Osherovich */ 204852363335SNoa Osherovich if (num_eth_ports) 204952363335SNoa Osherovich return true; 205052363335SNoa Osherovich 205152363335SNoa Osherovich /* If all the ports are IB, we can check according to IB spec. */ 205252363335SNoa Osherovich lid_check: 205352363335SNoa Osherovich return !(lid < be16_to_cpu(IB_MULTICAST_LID_BASE) || 205452363335SNoa Osherovich lid == be16_to_cpu(IB_LID_PERMISSIVE)); 205552363335SNoa Osherovich } 205652363335SNoa Osherovich 20571da177e4SLinus Torvalds int ib_attach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid) 20581da177e4SLinus Torvalds { 2059c3bccbfbSOr Gerlitz int ret; 2060c3bccbfbSOr Gerlitz 20610c33aeedSJack Morgenstein if (!qp->device->attach_mcast) 206287915bf8SLeon Romanovsky return -EOPNOTSUPP; 2063be1d325aSNoa Osherovich 2064be1d325aSNoa Osherovich if (!rdma_is_multicast_addr((struct in6_addr *)gid->raw) || 2065be1d325aSNoa Osherovich qp->qp_type != IB_QPT_UD || !is_valid_mcast_lid(qp, lid)) 20660c33aeedSJack Morgenstein return -EINVAL; 20670c33aeedSJack Morgenstein 2068c3bccbfbSOr Gerlitz ret = qp->device->attach_mcast(qp, gid, lid); 2069c3bccbfbSOr Gerlitz if (!ret) 2070c3bccbfbSOr Gerlitz atomic_inc(&qp->usecnt); 2071c3bccbfbSOr Gerlitz return ret; 20721da177e4SLinus Torvalds } 20731da177e4SLinus Torvalds EXPORT_SYMBOL(ib_attach_mcast); 20741da177e4SLinus Torvalds 20751da177e4SLinus Torvalds int ib_detach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid) 20761da177e4SLinus Torvalds { 2077c3bccbfbSOr Gerlitz int ret; 2078c3bccbfbSOr Gerlitz 20790c33aeedSJack Morgenstein if (!qp->device->detach_mcast) 208087915bf8SLeon Romanovsky return -EOPNOTSUPP; 2081be1d325aSNoa Osherovich 2082be1d325aSNoa Osherovich if (!rdma_is_multicast_addr((struct in6_addr *)gid->raw) || 2083be1d325aSNoa Osherovich qp->qp_type != IB_QPT_UD || !is_valid_mcast_lid(qp, lid)) 20840c33aeedSJack Morgenstein return -EINVAL; 20850c33aeedSJack Morgenstein 2086c3bccbfbSOr Gerlitz ret = qp->device->detach_mcast(qp, gid, lid); 2087c3bccbfbSOr Gerlitz if (!ret) 2088c3bccbfbSOr Gerlitz atomic_dec(&qp->usecnt); 2089c3bccbfbSOr Gerlitz return ret; 20901da177e4SLinus Torvalds } 20911da177e4SLinus Torvalds EXPORT_SYMBOL(ib_detach_mcast); 209259991f94SSean Hefty 2093f66c8ba4SLeon Romanovsky struct ib_xrcd *__ib_alloc_xrcd(struct ib_device *device, const char *caller) 209459991f94SSean Hefty { 209559991f94SSean Hefty struct ib_xrcd *xrcd; 209659991f94SSean Hefty 209759991f94SSean Hefty if (!device->alloc_xrcd) 209887915bf8SLeon Romanovsky return ERR_PTR(-EOPNOTSUPP); 209959991f94SSean Hefty 210059991f94SSean Hefty xrcd = device->alloc_xrcd(device, NULL, NULL); 210159991f94SSean Hefty if (!IS_ERR(xrcd)) { 210259991f94SSean Hefty xrcd->device = device; 210353d0bd1eSSean Hefty xrcd->inode = NULL; 210459991f94SSean Hefty atomic_set(&xrcd->usecnt, 0); 2105d3d72d90SSean Hefty mutex_init(&xrcd->tgt_qp_mutex); 2106d3d72d90SSean Hefty INIT_LIST_HEAD(&xrcd->tgt_qp_list); 210759991f94SSean Hefty } 210859991f94SSean Hefty 210959991f94SSean Hefty return xrcd; 211059991f94SSean Hefty } 2111f66c8ba4SLeon Romanovsky EXPORT_SYMBOL(__ib_alloc_xrcd); 211259991f94SSean Hefty 211359991f94SSean Hefty int ib_dealloc_xrcd(struct ib_xrcd *xrcd) 211459991f94SSean Hefty { 2115d3d72d90SSean Hefty struct ib_qp *qp; 2116d3d72d90SSean Hefty int ret; 2117d3d72d90SSean Hefty 211859991f94SSean Hefty if (atomic_read(&xrcd->usecnt)) 211959991f94SSean Hefty return -EBUSY; 212059991f94SSean Hefty 2121d3d72d90SSean Hefty while (!list_empty(&xrcd->tgt_qp_list)) { 2122d3d72d90SSean Hefty qp = list_entry(xrcd->tgt_qp_list.next, struct ib_qp, xrcd_list); 2123d3d72d90SSean Hefty ret = ib_destroy_qp(qp); 2124d3d72d90SSean Hefty if (ret) 2125d3d72d90SSean Hefty return ret; 2126d3d72d90SSean Hefty } 2127d3d72d90SSean Hefty 212859991f94SSean Hefty return xrcd->device->dealloc_xrcd(xrcd); 212959991f94SSean Hefty } 213059991f94SSean Hefty EXPORT_SYMBOL(ib_dealloc_xrcd); 2131319a441dSHadar Hen Zion 21325fd251c8SYishai Hadas /** 21335fd251c8SYishai Hadas * ib_create_wq - Creates a WQ associated with the specified protection 21345fd251c8SYishai Hadas * domain. 21355fd251c8SYishai Hadas * @pd: The protection domain associated with the WQ. 21361f58621eSRandy Dunlap * @wq_attr: A list of initial attributes required to create the 21375fd251c8SYishai Hadas * WQ. If WQ creation succeeds, then the attributes are updated to 21385fd251c8SYishai Hadas * the actual capabilities of the created WQ. 21395fd251c8SYishai Hadas * 21401f58621eSRandy Dunlap * wq_attr->max_wr and wq_attr->max_sge determine 21415fd251c8SYishai Hadas * the requested size of the WQ, and set to the actual values allocated 21425fd251c8SYishai Hadas * on return. 21435fd251c8SYishai Hadas * If ib_create_wq() succeeds, then max_wr and max_sge will always be 21445fd251c8SYishai Hadas * at least as large as the requested values. 21455fd251c8SYishai Hadas */ 21465fd251c8SYishai Hadas struct ib_wq *ib_create_wq(struct ib_pd *pd, 21475fd251c8SYishai Hadas struct ib_wq_init_attr *wq_attr) 21485fd251c8SYishai Hadas { 21495fd251c8SYishai Hadas struct ib_wq *wq; 21505fd251c8SYishai Hadas 21515fd251c8SYishai Hadas if (!pd->device->create_wq) 215287915bf8SLeon Romanovsky return ERR_PTR(-EOPNOTSUPP); 21535fd251c8SYishai Hadas 21545fd251c8SYishai Hadas wq = pd->device->create_wq(pd, wq_attr, NULL); 21555fd251c8SYishai Hadas if (!IS_ERR(wq)) { 21565fd251c8SYishai Hadas wq->event_handler = wq_attr->event_handler; 21575fd251c8SYishai Hadas wq->wq_context = wq_attr->wq_context; 21585fd251c8SYishai Hadas wq->wq_type = wq_attr->wq_type; 21595fd251c8SYishai Hadas wq->cq = wq_attr->cq; 21605fd251c8SYishai Hadas wq->device = pd->device; 21615fd251c8SYishai Hadas wq->pd = pd; 21625fd251c8SYishai Hadas wq->uobject = NULL; 21635fd251c8SYishai Hadas atomic_inc(&pd->usecnt); 21645fd251c8SYishai Hadas atomic_inc(&wq_attr->cq->usecnt); 21655fd251c8SYishai Hadas atomic_set(&wq->usecnt, 0); 21665fd251c8SYishai Hadas } 21675fd251c8SYishai Hadas return wq; 21685fd251c8SYishai Hadas } 21695fd251c8SYishai Hadas EXPORT_SYMBOL(ib_create_wq); 21705fd251c8SYishai Hadas 21715fd251c8SYishai Hadas /** 21725fd251c8SYishai Hadas * ib_destroy_wq - Destroys the specified WQ. 21735fd251c8SYishai Hadas * @wq: The WQ to destroy. 21745fd251c8SYishai Hadas */ 21755fd251c8SYishai Hadas int ib_destroy_wq(struct ib_wq *wq) 21765fd251c8SYishai Hadas { 21775fd251c8SYishai Hadas int err; 21785fd251c8SYishai Hadas struct ib_cq *cq = wq->cq; 21795fd251c8SYishai Hadas struct ib_pd *pd = wq->pd; 21805fd251c8SYishai Hadas 21815fd251c8SYishai Hadas if (atomic_read(&wq->usecnt)) 21825fd251c8SYishai Hadas return -EBUSY; 21835fd251c8SYishai Hadas 21845fd251c8SYishai Hadas err = wq->device->destroy_wq(wq); 21855fd251c8SYishai Hadas if (!err) { 21865fd251c8SYishai Hadas atomic_dec(&pd->usecnt); 21875fd251c8SYishai Hadas atomic_dec(&cq->usecnt); 21885fd251c8SYishai Hadas } 21895fd251c8SYishai Hadas return err; 21905fd251c8SYishai Hadas } 21915fd251c8SYishai Hadas EXPORT_SYMBOL(ib_destroy_wq); 21925fd251c8SYishai Hadas 21935fd251c8SYishai Hadas /** 21945fd251c8SYishai Hadas * ib_modify_wq - Modifies the specified WQ. 21955fd251c8SYishai Hadas * @wq: The WQ to modify. 21965fd251c8SYishai Hadas * @wq_attr: On input, specifies the WQ attributes to modify. 21975fd251c8SYishai Hadas * @wq_attr_mask: A bit-mask used to specify which attributes of the WQ 21985fd251c8SYishai Hadas * are being modified. 21995fd251c8SYishai Hadas * On output, the current values of selected WQ attributes are returned. 22005fd251c8SYishai Hadas */ 22015fd251c8SYishai Hadas int ib_modify_wq(struct ib_wq *wq, struct ib_wq_attr *wq_attr, 22025fd251c8SYishai Hadas u32 wq_attr_mask) 22035fd251c8SYishai Hadas { 22045fd251c8SYishai Hadas int err; 22055fd251c8SYishai Hadas 22065fd251c8SYishai Hadas if (!wq->device->modify_wq) 220787915bf8SLeon Romanovsky return -EOPNOTSUPP; 22085fd251c8SYishai Hadas 22095fd251c8SYishai Hadas err = wq->device->modify_wq(wq, wq_attr, wq_attr_mask, NULL); 22105fd251c8SYishai Hadas return err; 22115fd251c8SYishai Hadas } 22125fd251c8SYishai Hadas EXPORT_SYMBOL(ib_modify_wq); 22135fd251c8SYishai Hadas 22146d39786bSYishai Hadas /* 22156d39786bSYishai Hadas * ib_create_rwq_ind_table - Creates a RQ Indirection Table. 22166d39786bSYishai Hadas * @device: The device on which to create the rwq indirection table. 22176d39786bSYishai Hadas * @ib_rwq_ind_table_init_attr: A list of initial attributes required to 22186d39786bSYishai Hadas * create the Indirection Table. 22196d39786bSYishai Hadas * 22206d39786bSYishai Hadas * Note: The life time of ib_rwq_ind_table_init_attr->ind_tbl is not less 22216d39786bSYishai Hadas * than the created ib_rwq_ind_table object and the caller is responsible 22226d39786bSYishai Hadas * for its memory allocation/free. 22236d39786bSYishai Hadas */ 22246d39786bSYishai Hadas struct ib_rwq_ind_table *ib_create_rwq_ind_table(struct ib_device *device, 22256d39786bSYishai Hadas struct ib_rwq_ind_table_init_attr *init_attr) 22266d39786bSYishai Hadas { 22276d39786bSYishai Hadas struct ib_rwq_ind_table *rwq_ind_table; 22286d39786bSYishai Hadas int i; 22296d39786bSYishai Hadas u32 table_size; 22306d39786bSYishai Hadas 22316d39786bSYishai Hadas if (!device->create_rwq_ind_table) 223287915bf8SLeon Romanovsky return ERR_PTR(-EOPNOTSUPP); 22336d39786bSYishai Hadas 22346d39786bSYishai Hadas table_size = (1 << init_attr->log_ind_tbl_size); 22356d39786bSYishai Hadas rwq_ind_table = device->create_rwq_ind_table(device, 22366d39786bSYishai Hadas init_attr, NULL); 22376d39786bSYishai Hadas if (IS_ERR(rwq_ind_table)) 22386d39786bSYishai Hadas return rwq_ind_table; 22396d39786bSYishai Hadas 22406d39786bSYishai Hadas rwq_ind_table->ind_tbl = init_attr->ind_tbl; 22416d39786bSYishai Hadas rwq_ind_table->log_ind_tbl_size = init_attr->log_ind_tbl_size; 22426d39786bSYishai Hadas rwq_ind_table->device = device; 22436d39786bSYishai Hadas rwq_ind_table->uobject = NULL; 22446d39786bSYishai Hadas atomic_set(&rwq_ind_table->usecnt, 0); 22456d39786bSYishai Hadas 22466d39786bSYishai Hadas for (i = 0; i < table_size; i++) 22476d39786bSYishai Hadas atomic_inc(&rwq_ind_table->ind_tbl[i]->usecnt); 22486d39786bSYishai Hadas 22496d39786bSYishai Hadas return rwq_ind_table; 22506d39786bSYishai Hadas } 22516d39786bSYishai Hadas EXPORT_SYMBOL(ib_create_rwq_ind_table); 22526d39786bSYishai Hadas 22536d39786bSYishai Hadas /* 22546d39786bSYishai Hadas * ib_destroy_rwq_ind_table - Destroys the specified Indirection Table. 22556d39786bSYishai Hadas * @wq_ind_table: The Indirection Table to destroy. 22566d39786bSYishai Hadas */ 22576d39786bSYishai Hadas int ib_destroy_rwq_ind_table(struct ib_rwq_ind_table *rwq_ind_table) 22586d39786bSYishai Hadas { 22596d39786bSYishai Hadas int err, i; 22606d39786bSYishai Hadas u32 table_size = (1 << rwq_ind_table->log_ind_tbl_size); 22616d39786bSYishai Hadas struct ib_wq **ind_tbl = rwq_ind_table->ind_tbl; 22626d39786bSYishai Hadas 22636d39786bSYishai Hadas if (atomic_read(&rwq_ind_table->usecnt)) 22646d39786bSYishai Hadas return -EBUSY; 22656d39786bSYishai Hadas 22666d39786bSYishai Hadas err = rwq_ind_table->device->destroy_rwq_ind_table(rwq_ind_table); 22676d39786bSYishai Hadas if (!err) { 22686d39786bSYishai Hadas for (i = 0; i < table_size; i++) 22696d39786bSYishai Hadas atomic_dec(&ind_tbl[i]->usecnt); 22706d39786bSYishai Hadas } 22716d39786bSYishai Hadas 22726d39786bSYishai Hadas return err; 22736d39786bSYishai Hadas } 22746d39786bSYishai Hadas EXPORT_SYMBOL(ib_destroy_rwq_ind_table); 22756d39786bSYishai Hadas 2276319a441dSHadar Hen Zion struct ib_flow *ib_create_flow(struct ib_qp *qp, 2277319a441dSHadar Hen Zion struct ib_flow_attr *flow_attr, 2278319a441dSHadar Hen Zion int domain) 2279319a441dSHadar Hen Zion { 2280319a441dSHadar Hen Zion struct ib_flow *flow_id; 2281319a441dSHadar Hen Zion if (!qp->device->create_flow) 228287915bf8SLeon Romanovsky return ERR_PTR(-EOPNOTSUPP); 2283319a441dSHadar Hen Zion 228459082a32SMatan Barak flow_id = qp->device->create_flow(qp, flow_attr, domain, NULL); 22858ecc7985SMark Bloch if (!IS_ERR(flow_id)) { 2286319a441dSHadar Hen Zion atomic_inc(&qp->usecnt); 22878ecc7985SMark Bloch flow_id->qp = qp; 22888ecc7985SMark Bloch } 2289319a441dSHadar Hen Zion return flow_id; 2290319a441dSHadar Hen Zion } 2291319a441dSHadar Hen Zion EXPORT_SYMBOL(ib_create_flow); 2292319a441dSHadar Hen Zion 2293319a441dSHadar Hen Zion int ib_destroy_flow(struct ib_flow *flow_id) 2294319a441dSHadar Hen Zion { 2295319a441dSHadar Hen Zion int err; 2296319a441dSHadar Hen Zion struct ib_qp *qp = flow_id->qp; 2297319a441dSHadar Hen Zion 2298319a441dSHadar Hen Zion err = qp->device->destroy_flow(flow_id); 2299319a441dSHadar Hen Zion if (!err) 2300319a441dSHadar Hen Zion atomic_dec(&qp->usecnt); 2301319a441dSHadar Hen Zion return err; 2302319a441dSHadar Hen Zion } 2303319a441dSHadar Hen Zion EXPORT_SYMBOL(ib_destroy_flow); 23041b01d335SSagi Grimberg 23051b01d335SSagi Grimberg int ib_check_mr_status(struct ib_mr *mr, u32 check_mask, 23061b01d335SSagi Grimberg struct ib_mr_status *mr_status) 23071b01d335SSagi Grimberg { 23081b01d335SSagi Grimberg return mr->device->check_mr_status ? 230987915bf8SLeon Romanovsky mr->device->check_mr_status(mr, check_mask, mr_status) : -EOPNOTSUPP; 23101b01d335SSagi Grimberg } 23111b01d335SSagi Grimberg EXPORT_SYMBOL(ib_check_mr_status); 23124c67e2bfSSagi Grimberg 231350174a7fSEli Cohen int ib_set_vf_link_state(struct ib_device *device, int vf, u8 port, 231450174a7fSEli Cohen int state) 231550174a7fSEli Cohen { 231650174a7fSEli Cohen if (!device->set_vf_link_state) 231787915bf8SLeon Romanovsky return -EOPNOTSUPP; 231850174a7fSEli Cohen 231950174a7fSEli Cohen return device->set_vf_link_state(device, vf, port, state); 232050174a7fSEli Cohen } 232150174a7fSEli Cohen EXPORT_SYMBOL(ib_set_vf_link_state); 232250174a7fSEli Cohen 232350174a7fSEli Cohen int ib_get_vf_config(struct ib_device *device, int vf, u8 port, 232450174a7fSEli Cohen struct ifla_vf_info *info) 232550174a7fSEli Cohen { 232650174a7fSEli Cohen if (!device->get_vf_config) 232787915bf8SLeon Romanovsky return -EOPNOTSUPP; 232850174a7fSEli Cohen 232950174a7fSEli Cohen return device->get_vf_config(device, vf, port, info); 233050174a7fSEli Cohen } 233150174a7fSEli Cohen EXPORT_SYMBOL(ib_get_vf_config); 233250174a7fSEli Cohen 233350174a7fSEli Cohen int ib_get_vf_stats(struct ib_device *device, int vf, u8 port, 233450174a7fSEli Cohen struct ifla_vf_stats *stats) 233550174a7fSEli Cohen { 233650174a7fSEli Cohen if (!device->get_vf_stats) 233787915bf8SLeon Romanovsky return -EOPNOTSUPP; 233850174a7fSEli Cohen 233950174a7fSEli Cohen return device->get_vf_stats(device, vf, port, stats); 234050174a7fSEli Cohen } 234150174a7fSEli Cohen EXPORT_SYMBOL(ib_get_vf_stats); 234250174a7fSEli Cohen 234350174a7fSEli Cohen int ib_set_vf_guid(struct ib_device *device, int vf, u8 port, u64 guid, 234450174a7fSEli Cohen int type) 234550174a7fSEli Cohen { 234650174a7fSEli Cohen if (!device->set_vf_guid) 234787915bf8SLeon Romanovsky return -EOPNOTSUPP; 234850174a7fSEli Cohen 234950174a7fSEli Cohen return device->set_vf_guid(device, vf, port, guid, type); 235050174a7fSEli Cohen } 235150174a7fSEli Cohen EXPORT_SYMBOL(ib_set_vf_guid); 235250174a7fSEli Cohen 23534c67e2bfSSagi Grimberg /** 23544c67e2bfSSagi Grimberg * ib_map_mr_sg() - Map the largest prefix of a dma mapped SG list 23554c67e2bfSSagi Grimberg * and set it the memory region. 23564c67e2bfSSagi Grimberg * @mr: memory region 23574c67e2bfSSagi Grimberg * @sg: dma mapped scatterlist 23584c67e2bfSSagi Grimberg * @sg_nents: number of entries in sg 2359ff2ba993SChristoph Hellwig * @sg_offset: offset in bytes into sg 23604c67e2bfSSagi Grimberg * @page_size: page vector desired page size 23614c67e2bfSSagi Grimberg * 23624c67e2bfSSagi Grimberg * Constraints: 23634c67e2bfSSagi Grimberg * - The first sg element is allowed to have an offset. 236452746129SBart Van Assche * - Each sg element must either be aligned to page_size or virtually 236552746129SBart Van Assche * contiguous to the previous element. In case an sg element has a 236652746129SBart Van Assche * non-contiguous offset, the mapping prefix will not include it. 23674c67e2bfSSagi Grimberg * - The last sg element is allowed to have length less than page_size. 23684c67e2bfSSagi Grimberg * - If sg_nents total byte length exceeds the mr max_num_sge * page_size 23694c67e2bfSSagi Grimberg * then only max_num_sg entries will be mapped. 237052746129SBart Van Assche * - If the MR was allocated with type IB_MR_TYPE_SG_GAPS, none of these 2371f5aa9159SSagi Grimberg * constraints holds and the page_size argument is ignored. 23724c67e2bfSSagi Grimberg * 23734c67e2bfSSagi Grimberg * Returns the number of sg elements that were mapped to the memory region. 23744c67e2bfSSagi Grimberg * 23754c67e2bfSSagi Grimberg * After this completes successfully, the memory region 23764c67e2bfSSagi Grimberg * is ready for registration. 23774c67e2bfSSagi Grimberg */ 2378ff2ba993SChristoph Hellwig int ib_map_mr_sg(struct ib_mr *mr, struct scatterlist *sg, int sg_nents, 23799aa8b321SBart Van Assche unsigned int *sg_offset, unsigned int page_size) 23804c67e2bfSSagi Grimberg { 23814c67e2bfSSagi Grimberg if (unlikely(!mr->device->map_mr_sg)) 238287915bf8SLeon Romanovsky return -EOPNOTSUPP; 23834c67e2bfSSagi Grimberg 23844c67e2bfSSagi Grimberg mr->page_size = page_size; 23854c67e2bfSSagi Grimberg 2386ff2ba993SChristoph Hellwig return mr->device->map_mr_sg(mr, sg, sg_nents, sg_offset); 23874c67e2bfSSagi Grimberg } 23884c67e2bfSSagi Grimberg EXPORT_SYMBOL(ib_map_mr_sg); 23894c67e2bfSSagi Grimberg 23904c67e2bfSSagi Grimberg /** 23914c67e2bfSSagi Grimberg * ib_sg_to_pages() - Convert the largest prefix of a sg list 23924c67e2bfSSagi Grimberg * to a page vector 23934c67e2bfSSagi Grimberg * @mr: memory region 23944c67e2bfSSagi Grimberg * @sgl: dma mapped scatterlist 23954c67e2bfSSagi Grimberg * @sg_nents: number of entries in sg 23969aa8b321SBart Van Assche * @sg_offset_p: IN: start offset in bytes into sg 23979aa8b321SBart Van Assche * OUT: offset in bytes for element n of the sg of the first 23989aa8b321SBart Van Assche * byte that has not been processed where n is the return 23999aa8b321SBart Van Assche * value of this function. 24004c67e2bfSSagi Grimberg * @set_page: driver page assignment function pointer 24014c67e2bfSSagi Grimberg * 24028f5ba10eSBart Van Assche * Core service helper for drivers to convert the largest 24034c67e2bfSSagi Grimberg * prefix of given sg list to a page vector. The sg list 24044c67e2bfSSagi Grimberg * prefix converted is the prefix that meet the requirements 24054c67e2bfSSagi Grimberg * of ib_map_mr_sg. 24064c67e2bfSSagi Grimberg * 24074c67e2bfSSagi Grimberg * Returns the number of sg elements that were assigned to 24084c67e2bfSSagi Grimberg * a page vector. 24094c67e2bfSSagi Grimberg */ 2410ff2ba993SChristoph Hellwig int ib_sg_to_pages(struct ib_mr *mr, struct scatterlist *sgl, int sg_nents, 24119aa8b321SBart Van Assche unsigned int *sg_offset_p, int (*set_page)(struct ib_mr *, u64)) 24124c67e2bfSSagi Grimberg { 24134c67e2bfSSagi Grimberg struct scatterlist *sg; 2414b6aeb980SBart Van Assche u64 last_end_dma_addr = 0; 24159aa8b321SBart Van Assche unsigned int sg_offset = sg_offset_p ? *sg_offset_p : 0; 24164c67e2bfSSagi Grimberg unsigned int last_page_off = 0; 24174c67e2bfSSagi Grimberg u64 page_mask = ~((u64)mr->page_size - 1); 24188f5ba10eSBart Van Assche int i, ret; 24194c67e2bfSSagi Grimberg 24209aa8b321SBart Van Assche if (unlikely(sg_nents <= 0 || sg_offset > sg_dma_len(&sgl[0]))) 24219aa8b321SBart Van Assche return -EINVAL; 24229aa8b321SBart Van Assche 2423ff2ba993SChristoph Hellwig mr->iova = sg_dma_address(&sgl[0]) + sg_offset; 24244c67e2bfSSagi Grimberg mr->length = 0; 24254c67e2bfSSagi Grimberg 24264c67e2bfSSagi Grimberg for_each_sg(sgl, sg, sg_nents, i) { 2427ff2ba993SChristoph Hellwig u64 dma_addr = sg_dma_address(sg) + sg_offset; 24289aa8b321SBart Van Assche u64 prev_addr = dma_addr; 2429ff2ba993SChristoph Hellwig unsigned int dma_len = sg_dma_len(sg) - sg_offset; 24304c67e2bfSSagi Grimberg u64 end_dma_addr = dma_addr + dma_len; 24314c67e2bfSSagi Grimberg u64 page_addr = dma_addr & page_mask; 24324c67e2bfSSagi Grimberg 24338f5ba10eSBart Van Assche /* 24348f5ba10eSBart Van Assche * For the second and later elements, check whether either the 24358f5ba10eSBart Van Assche * end of element i-1 or the start of element i is not aligned 24368f5ba10eSBart Van Assche * on a page boundary. 24378f5ba10eSBart Van Assche */ 24388f5ba10eSBart Van Assche if (i && (last_page_off != 0 || page_addr != dma_addr)) { 24398f5ba10eSBart Van Assche /* Stop mapping if there is a gap. */ 24408f5ba10eSBart Van Assche if (last_end_dma_addr != dma_addr) 24418f5ba10eSBart Van Assche break; 24424c67e2bfSSagi Grimberg 24438f5ba10eSBart Van Assche /* 24448f5ba10eSBart Van Assche * Coalesce this element with the last. If it is small 24458f5ba10eSBart Van Assche * enough just update mr->length. Otherwise start 24468f5ba10eSBart Van Assche * mapping from the next page. 24478f5ba10eSBart Van Assche */ 24488f5ba10eSBart Van Assche goto next_page; 24494c67e2bfSSagi Grimberg } 24504c67e2bfSSagi Grimberg 24514c67e2bfSSagi Grimberg do { 24528f5ba10eSBart Van Assche ret = set_page(mr, page_addr); 24539aa8b321SBart Van Assche if (unlikely(ret < 0)) { 24549aa8b321SBart Van Assche sg_offset = prev_addr - sg_dma_address(sg); 24559aa8b321SBart Van Assche mr->length += prev_addr - dma_addr; 24569aa8b321SBart Van Assche if (sg_offset_p) 24579aa8b321SBart Van Assche *sg_offset_p = sg_offset; 24589aa8b321SBart Van Assche return i || sg_offset ? i : ret; 24599aa8b321SBart Van Assche } 24609aa8b321SBart Van Assche prev_addr = page_addr; 24618f5ba10eSBart Van Assche next_page: 24624c67e2bfSSagi Grimberg page_addr += mr->page_size; 24634c67e2bfSSagi Grimberg } while (page_addr < end_dma_addr); 24644c67e2bfSSagi Grimberg 24654c67e2bfSSagi Grimberg mr->length += dma_len; 24664c67e2bfSSagi Grimberg last_end_dma_addr = end_dma_addr; 24674c67e2bfSSagi Grimberg last_page_off = end_dma_addr & ~page_mask; 2468ff2ba993SChristoph Hellwig 2469ff2ba993SChristoph Hellwig sg_offset = 0; 24704c67e2bfSSagi Grimberg } 24714c67e2bfSSagi Grimberg 24729aa8b321SBart Van Assche if (sg_offset_p) 24739aa8b321SBart Van Assche *sg_offset_p = 0; 24744c67e2bfSSagi Grimberg return i; 24754c67e2bfSSagi Grimberg } 24764c67e2bfSSagi Grimberg EXPORT_SYMBOL(ib_sg_to_pages); 2477765d6774SSteve Wise 2478765d6774SSteve Wise struct ib_drain_cqe { 2479765d6774SSteve Wise struct ib_cqe cqe; 2480765d6774SSteve Wise struct completion done; 2481765d6774SSteve Wise }; 2482765d6774SSteve Wise 2483765d6774SSteve Wise static void ib_drain_qp_done(struct ib_cq *cq, struct ib_wc *wc) 2484765d6774SSteve Wise { 2485765d6774SSteve Wise struct ib_drain_cqe *cqe = container_of(wc->wr_cqe, struct ib_drain_cqe, 2486765d6774SSteve Wise cqe); 2487765d6774SSteve Wise 2488765d6774SSteve Wise complete(&cqe->done); 2489765d6774SSteve Wise } 2490765d6774SSteve Wise 2491765d6774SSteve Wise /* 2492765d6774SSteve Wise * Post a WR and block until its completion is reaped for the SQ. 2493765d6774SSteve Wise */ 2494765d6774SSteve Wise static void __ib_drain_sq(struct ib_qp *qp) 2495765d6774SSteve Wise { 2496f039f44fSBart Van Assche struct ib_cq *cq = qp->send_cq; 2497765d6774SSteve Wise struct ib_qp_attr attr = { .qp_state = IB_QPS_ERR }; 2498765d6774SSteve Wise struct ib_drain_cqe sdrain; 2499a1ae7d03SBart Van Assche struct ib_send_wr *bad_swr; 2500a1ae7d03SBart Van Assche struct ib_rdma_wr swr = { 2501a1ae7d03SBart Van Assche .wr = { 25026ee68773SAndrew Morton .next = NULL, 25036ee68773SAndrew Morton { .wr_cqe = &sdrain.cqe, }, 2504a1ae7d03SBart Van Assche .opcode = IB_WR_RDMA_WRITE, 2505a1ae7d03SBart Van Assche }, 2506a1ae7d03SBart Van Assche }; 2507765d6774SSteve Wise int ret; 2508765d6774SSteve Wise 2509765d6774SSteve Wise ret = ib_modify_qp(qp, &attr, IB_QP_STATE); 2510765d6774SSteve Wise if (ret) { 2511765d6774SSteve Wise WARN_ONCE(ret, "failed to drain send queue: %d\n", ret); 2512765d6774SSteve Wise return; 2513765d6774SSteve Wise } 2514765d6774SSteve Wise 2515aaebd377SMax Gurtovoy sdrain.cqe.done = ib_drain_qp_done; 2516aaebd377SMax Gurtovoy init_completion(&sdrain.done); 2517aaebd377SMax Gurtovoy 2518a1ae7d03SBart Van Assche ret = ib_post_send(qp, &swr.wr, &bad_swr); 2519765d6774SSteve Wise if (ret) { 2520765d6774SSteve Wise WARN_ONCE(ret, "failed to drain send queue: %d\n", ret); 2521765d6774SSteve Wise return; 2522765d6774SSteve Wise } 2523765d6774SSteve Wise 2524f039f44fSBart Van Assche if (cq->poll_ctx == IB_POLL_DIRECT) 2525f039f44fSBart Van Assche while (wait_for_completion_timeout(&sdrain.done, HZ / 10) <= 0) 2526f039f44fSBart Van Assche ib_process_cq_direct(cq, -1); 2527f039f44fSBart Van Assche else 2528765d6774SSteve Wise wait_for_completion(&sdrain.done); 2529765d6774SSteve Wise } 2530765d6774SSteve Wise 2531765d6774SSteve Wise /* 2532765d6774SSteve Wise * Post a WR and block until its completion is reaped for the RQ. 2533765d6774SSteve Wise */ 2534765d6774SSteve Wise static void __ib_drain_rq(struct ib_qp *qp) 2535765d6774SSteve Wise { 2536f039f44fSBart Van Assche struct ib_cq *cq = qp->recv_cq; 2537765d6774SSteve Wise struct ib_qp_attr attr = { .qp_state = IB_QPS_ERR }; 2538765d6774SSteve Wise struct ib_drain_cqe rdrain; 2539765d6774SSteve Wise struct ib_recv_wr rwr = {}, *bad_rwr; 2540765d6774SSteve Wise int ret; 2541765d6774SSteve Wise 2542765d6774SSteve Wise ret = ib_modify_qp(qp, &attr, IB_QP_STATE); 2543765d6774SSteve Wise if (ret) { 2544765d6774SSteve Wise WARN_ONCE(ret, "failed to drain recv queue: %d\n", ret); 2545765d6774SSteve Wise return; 2546765d6774SSteve Wise } 2547765d6774SSteve Wise 2548aaebd377SMax Gurtovoy rwr.wr_cqe = &rdrain.cqe; 2549aaebd377SMax Gurtovoy rdrain.cqe.done = ib_drain_qp_done; 2550aaebd377SMax Gurtovoy init_completion(&rdrain.done); 2551aaebd377SMax Gurtovoy 2552765d6774SSteve Wise ret = ib_post_recv(qp, &rwr, &bad_rwr); 2553765d6774SSteve Wise if (ret) { 2554765d6774SSteve Wise WARN_ONCE(ret, "failed to drain recv queue: %d\n", ret); 2555765d6774SSteve Wise return; 2556765d6774SSteve Wise } 2557765d6774SSteve Wise 2558f039f44fSBart Van Assche if (cq->poll_ctx == IB_POLL_DIRECT) 2559f039f44fSBart Van Assche while (wait_for_completion_timeout(&rdrain.done, HZ / 10) <= 0) 2560f039f44fSBart Van Assche ib_process_cq_direct(cq, -1); 2561f039f44fSBart Van Assche else 2562765d6774SSteve Wise wait_for_completion(&rdrain.done); 2563765d6774SSteve Wise } 2564765d6774SSteve Wise 2565765d6774SSteve Wise /** 2566765d6774SSteve Wise * ib_drain_sq() - Block until all SQ CQEs have been consumed by the 2567765d6774SSteve Wise * application. 2568765d6774SSteve Wise * @qp: queue pair to drain 2569765d6774SSteve Wise * 2570765d6774SSteve Wise * If the device has a provider-specific drain function, then 2571765d6774SSteve Wise * call that. Otherwise call the generic drain function 2572765d6774SSteve Wise * __ib_drain_sq(). 2573765d6774SSteve Wise * 2574765d6774SSteve Wise * The caller must: 2575765d6774SSteve Wise * 2576765d6774SSteve Wise * ensure there is room in the CQ and SQ for the drain work request and 2577765d6774SSteve Wise * completion. 2578765d6774SSteve Wise * 2579f039f44fSBart Van Assche * allocate the CQ using ib_alloc_cq(). 2580765d6774SSteve Wise * 2581765d6774SSteve Wise * ensure that there are no other contexts that are posting WRs concurrently. 2582765d6774SSteve Wise * Otherwise the drain is not guaranteed. 2583765d6774SSteve Wise */ 2584765d6774SSteve Wise void ib_drain_sq(struct ib_qp *qp) 2585765d6774SSteve Wise { 2586765d6774SSteve Wise if (qp->device->drain_sq) 2587765d6774SSteve Wise qp->device->drain_sq(qp); 2588765d6774SSteve Wise else 2589765d6774SSteve Wise __ib_drain_sq(qp); 2590765d6774SSteve Wise } 2591765d6774SSteve Wise EXPORT_SYMBOL(ib_drain_sq); 2592765d6774SSteve Wise 2593765d6774SSteve Wise /** 2594765d6774SSteve Wise * ib_drain_rq() - Block until all RQ CQEs have been consumed by the 2595765d6774SSteve Wise * application. 2596765d6774SSteve Wise * @qp: queue pair to drain 2597765d6774SSteve Wise * 2598765d6774SSteve Wise * If the device has a provider-specific drain function, then 2599765d6774SSteve Wise * call that. Otherwise call the generic drain function 2600765d6774SSteve Wise * __ib_drain_rq(). 2601765d6774SSteve Wise * 2602765d6774SSteve Wise * The caller must: 2603765d6774SSteve Wise * 2604765d6774SSteve Wise * ensure there is room in the CQ and RQ for the drain work request and 2605765d6774SSteve Wise * completion. 2606765d6774SSteve Wise * 2607f039f44fSBart Van Assche * allocate the CQ using ib_alloc_cq(). 2608765d6774SSteve Wise * 2609765d6774SSteve Wise * ensure that there are no other contexts that are posting WRs concurrently. 2610765d6774SSteve Wise * Otherwise the drain is not guaranteed. 2611765d6774SSteve Wise */ 2612765d6774SSteve Wise void ib_drain_rq(struct ib_qp *qp) 2613765d6774SSteve Wise { 2614765d6774SSteve Wise if (qp->device->drain_rq) 2615765d6774SSteve Wise qp->device->drain_rq(qp); 2616765d6774SSteve Wise else 2617765d6774SSteve Wise __ib_drain_rq(qp); 2618765d6774SSteve Wise } 2619765d6774SSteve Wise EXPORT_SYMBOL(ib_drain_rq); 2620765d6774SSteve Wise 2621765d6774SSteve Wise /** 2622765d6774SSteve Wise * ib_drain_qp() - Block until all CQEs have been consumed by the 2623765d6774SSteve Wise * application on both the RQ and SQ. 2624765d6774SSteve Wise * @qp: queue pair to drain 2625765d6774SSteve Wise * 2626765d6774SSteve Wise * The caller must: 2627765d6774SSteve Wise * 2628765d6774SSteve Wise * ensure there is room in the CQ(s), SQ, and RQ for drain work requests 2629765d6774SSteve Wise * and completions. 2630765d6774SSteve Wise * 2631f039f44fSBart Van Assche * allocate the CQs using ib_alloc_cq(). 2632765d6774SSteve Wise * 2633765d6774SSteve Wise * ensure that there are no other contexts that are posting WRs concurrently. 2634765d6774SSteve Wise * Otherwise the drain is not guaranteed. 2635765d6774SSteve Wise */ 2636765d6774SSteve Wise void ib_drain_qp(struct ib_qp *qp) 2637765d6774SSteve Wise { 2638765d6774SSteve Wise ib_drain_sq(qp); 263942235f80SSagi Grimberg if (!qp->srq) 2640765d6774SSteve Wise ib_drain_rq(qp); 2641765d6774SSteve Wise } 2642765d6774SSteve Wise EXPORT_SYMBOL(ib_drain_qp); 2643