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 393b02289b3SArtemy Kovalyov if ((rdma_is_grh_required(device, ah_attr->port_num) || 394b02289b3SArtemy Kovalyov ah_attr->type == RDMA_AH_ATTR_TYPE_ROCE) && 3958d9ec9adSJason Gunthorpe !(ah_attr->ah_flags & IB_AH_GRH)) 3968d9ec9adSJason Gunthorpe return -EINVAL; 3978d9ec9adSJason Gunthorpe 3988d9ec9adSJason Gunthorpe if (ah_attr->grh.sgid_attr) { 3998d9ec9adSJason Gunthorpe /* 4008d9ec9adSJason Gunthorpe * Make sure the passed sgid_attr is consistent with the 4018d9ec9adSJason Gunthorpe * parameters 4028d9ec9adSJason Gunthorpe */ 4038d9ec9adSJason Gunthorpe if (ah_attr->grh.sgid_attr->index != ah_attr->grh.sgid_index || 4048d9ec9adSJason Gunthorpe ah_attr->grh.sgid_attr->port_num != ah_attr->port_num) 4058d9ec9adSJason Gunthorpe return -EINVAL; 4068d9ec9adSJason Gunthorpe } 4078d9ec9adSJason Gunthorpe return 0; 4088d9ec9adSJason Gunthorpe } 4098d9ec9adSJason Gunthorpe 4108d9ec9adSJason Gunthorpe /* 4118d9ec9adSJason Gunthorpe * If the ah requires a GRH then ensure that sgid_attr pointer is filled in. 4128d9ec9adSJason Gunthorpe * On success the caller is responsible to call rdma_unfill_sgid_attr(). 4138d9ec9adSJason Gunthorpe */ 4148d9ec9adSJason Gunthorpe static int rdma_fill_sgid_attr(struct ib_device *device, 4158d9ec9adSJason Gunthorpe struct rdma_ah_attr *ah_attr, 4168d9ec9adSJason Gunthorpe const struct ib_gid_attr **old_sgid_attr) 4178d9ec9adSJason Gunthorpe { 4188d9ec9adSJason Gunthorpe const struct ib_gid_attr *sgid_attr; 4198d9ec9adSJason Gunthorpe struct ib_global_route *grh; 4208d9ec9adSJason Gunthorpe int ret; 4218d9ec9adSJason Gunthorpe 4228d9ec9adSJason Gunthorpe *old_sgid_attr = ah_attr->grh.sgid_attr; 4238d9ec9adSJason Gunthorpe 4248d9ec9adSJason Gunthorpe ret = rdma_check_ah_attr(device, ah_attr); 4258d9ec9adSJason Gunthorpe if (ret) 4268d9ec9adSJason Gunthorpe return ret; 4278d9ec9adSJason Gunthorpe 4288d9ec9adSJason Gunthorpe if (!(ah_attr->ah_flags & IB_AH_GRH)) 4298d9ec9adSJason Gunthorpe return 0; 4308d9ec9adSJason Gunthorpe 4318d9ec9adSJason Gunthorpe grh = rdma_ah_retrieve_grh(ah_attr); 4328d9ec9adSJason Gunthorpe if (grh->sgid_attr) 4338d9ec9adSJason Gunthorpe return 0; 4348d9ec9adSJason Gunthorpe 4358d9ec9adSJason Gunthorpe sgid_attr = 4368d9ec9adSJason Gunthorpe rdma_get_gid_attr(device, ah_attr->port_num, grh->sgid_index); 4378d9ec9adSJason Gunthorpe if (IS_ERR(sgid_attr)) 4388d9ec9adSJason Gunthorpe return PTR_ERR(sgid_attr); 4398d9ec9adSJason Gunthorpe 4408d9ec9adSJason Gunthorpe /* Move ownerhip of the kref into the ah_attr */ 4418d9ec9adSJason Gunthorpe grh->sgid_attr = sgid_attr; 4428d9ec9adSJason Gunthorpe return 0; 4438d9ec9adSJason Gunthorpe } 4448d9ec9adSJason Gunthorpe 4458d9ec9adSJason Gunthorpe static void rdma_unfill_sgid_attr(struct rdma_ah_attr *ah_attr, 4468d9ec9adSJason Gunthorpe const struct ib_gid_attr *old_sgid_attr) 4478d9ec9adSJason Gunthorpe { 4488d9ec9adSJason Gunthorpe /* 4498d9ec9adSJason Gunthorpe * Fill didn't change anything, the caller retains ownership of 4508d9ec9adSJason Gunthorpe * whatever it passed 4518d9ec9adSJason Gunthorpe */ 4528d9ec9adSJason Gunthorpe if (ah_attr->grh.sgid_attr == old_sgid_attr) 4538d9ec9adSJason Gunthorpe return; 4548d9ec9adSJason Gunthorpe 4558d9ec9adSJason Gunthorpe /* 4568d9ec9adSJason Gunthorpe * Otherwise, we need to undo what rdma_fill_sgid_attr so the caller 4578d9ec9adSJason Gunthorpe * doesn't see any change in the rdma_ah_attr. If we get here 4588d9ec9adSJason Gunthorpe * old_sgid_attr is NULL. 4598d9ec9adSJason Gunthorpe */ 4608d9ec9adSJason Gunthorpe rdma_destroy_ah_attr(ah_attr); 4618d9ec9adSJason Gunthorpe } 4628d9ec9adSJason Gunthorpe 4631a1f460fSJason Gunthorpe static const struct ib_gid_attr * 4641a1f460fSJason Gunthorpe rdma_update_sgid_attr(struct rdma_ah_attr *ah_attr, 4651a1f460fSJason Gunthorpe const struct ib_gid_attr *old_attr) 4661a1f460fSJason Gunthorpe { 4671a1f460fSJason Gunthorpe if (old_attr) 4681a1f460fSJason Gunthorpe rdma_put_gid_attr(old_attr); 4691a1f460fSJason Gunthorpe if (ah_attr->ah_flags & IB_AH_GRH) { 4701a1f460fSJason Gunthorpe rdma_hold_gid_attr(ah_attr->grh.sgid_attr); 4711a1f460fSJason Gunthorpe return ah_attr->grh.sgid_attr; 4721a1f460fSJason Gunthorpe } 4731a1f460fSJason Gunthorpe return NULL; 4741a1f460fSJason Gunthorpe } 4751a1f460fSJason Gunthorpe 4765cda6587SParav Pandit static struct ib_ah *_rdma_create_ah(struct ib_pd *pd, 4775cda6587SParav Pandit struct rdma_ah_attr *ah_attr, 4785cda6587SParav Pandit struct ib_udata *udata) 4791da177e4SLinus Torvalds { 4801da177e4SLinus Torvalds struct ib_ah *ah; 4811da177e4SLinus Torvalds 4820584c47bSKamal Heib if (!pd->device->create_ah) 4830584c47bSKamal Heib return ERR_PTR(-EOPNOTSUPP); 4840584c47bSKamal Heib 4855cda6587SParav Pandit ah = pd->device->create_ah(pd, ah_attr, udata); 4861da177e4SLinus Torvalds 4871da177e4SLinus Torvalds if (!IS_ERR(ah)) { 4881da177e4SLinus Torvalds ah->device = pd->device; 4891da177e4SLinus Torvalds ah->pd = pd; 490b5e81bf5SRoland Dreier ah->uobject = NULL; 49144c58487SDasaratharaman Chandramouli ah->type = ah_attr->type; 4921a1f460fSJason Gunthorpe ah->sgid_attr = rdma_update_sgid_attr(ah_attr, NULL); 4931a1f460fSJason Gunthorpe 4941da177e4SLinus Torvalds atomic_inc(&pd->usecnt); 4951da177e4SLinus Torvalds } 4961da177e4SLinus Torvalds 4971da177e4SLinus Torvalds return ah; 4981da177e4SLinus Torvalds } 4995cda6587SParav Pandit 5008d9ec9adSJason Gunthorpe /** 5018d9ec9adSJason Gunthorpe * rdma_create_ah - Creates an address handle for the 5028d9ec9adSJason Gunthorpe * given address vector. 5038d9ec9adSJason Gunthorpe * @pd: The protection domain associated with the address handle. 5048d9ec9adSJason Gunthorpe * @ah_attr: The attributes of the address vector. 5058d9ec9adSJason Gunthorpe * 5068d9ec9adSJason Gunthorpe * It returns 0 on success and returns appropriate error code on error. 5078d9ec9adSJason Gunthorpe * The address handle is used to reference a local or global destination 5088d9ec9adSJason Gunthorpe * in all UD QP post sends. 5098d9ec9adSJason Gunthorpe */ 5105cda6587SParav Pandit struct ib_ah *rdma_create_ah(struct ib_pd *pd, struct rdma_ah_attr *ah_attr) 5115cda6587SParav Pandit { 5128d9ec9adSJason Gunthorpe const struct ib_gid_attr *old_sgid_attr; 5138d9ec9adSJason Gunthorpe struct ib_ah *ah; 5148d9ec9adSJason Gunthorpe int ret; 5158d9ec9adSJason Gunthorpe 5168d9ec9adSJason Gunthorpe ret = rdma_fill_sgid_attr(pd->device, ah_attr, &old_sgid_attr); 5178d9ec9adSJason Gunthorpe if (ret) 5188d9ec9adSJason Gunthorpe return ERR_PTR(ret); 5198d9ec9adSJason Gunthorpe 5208d9ec9adSJason Gunthorpe ah = _rdma_create_ah(pd, ah_attr, NULL); 5218d9ec9adSJason Gunthorpe 5228d9ec9adSJason Gunthorpe rdma_unfill_sgid_attr(ah_attr, old_sgid_attr); 5238d9ec9adSJason Gunthorpe return ah; 5245cda6587SParav Pandit } 5250a18cfe4SDasaratharaman Chandramouli EXPORT_SYMBOL(rdma_create_ah); 5261da177e4SLinus Torvalds 5275cda6587SParav Pandit /** 5285cda6587SParav Pandit * rdma_create_user_ah - Creates an address handle for the 5295cda6587SParav Pandit * given address vector. 5305cda6587SParav Pandit * It resolves destination mac address for ah attribute of RoCE type. 5315cda6587SParav Pandit * @pd: The protection domain associated with the address handle. 5325cda6587SParav Pandit * @ah_attr: The attributes of the address vector. 5335cda6587SParav Pandit * @udata: pointer to user's input output buffer information need by 5345cda6587SParav Pandit * provider driver. 5355cda6587SParav Pandit * 5365cda6587SParav Pandit * It returns 0 on success and returns appropriate error code on error. 5375cda6587SParav Pandit * The address handle is used to reference a local or global destination 5385cda6587SParav Pandit * in all UD QP post sends. 5395cda6587SParav Pandit */ 5405cda6587SParav Pandit struct ib_ah *rdma_create_user_ah(struct ib_pd *pd, 5415cda6587SParav Pandit struct rdma_ah_attr *ah_attr, 5425cda6587SParav Pandit struct ib_udata *udata) 5435cda6587SParav Pandit { 5448d9ec9adSJason Gunthorpe const struct ib_gid_attr *old_sgid_attr; 5458d9ec9adSJason Gunthorpe struct ib_ah *ah; 5465cda6587SParav Pandit int err; 5475cda6587SParav Pandit 5488d9ec9adSJason Gunthorpe err = rdma_fill_sgid_attr(pd->device, ah_attr, &old_sgid_attr); 5498d9ec9adSJason Gunthorpe if (err) 5508d9ec9adSJason Gunthorpe return ERR_PTR(err); 5518d9ec9adSJason Gunthorpe 5525cda6587SParav Pandit if (ah_attr->type == RDMA_AH_ATTR_TYPE_ROCE) { 5535cda6587SParav Pandit err = ib_resolve_eth_dmac(pd->device, ah_attr); 5548d9ec9adSJason Gunthorpe if (err) { 5558d9ec9adSJason Gunthorpe ah = ERR_PTR(err); 5568d9ec9adSJason Gunthorpe goto out; 5578d9ec9adSJason Gunthorpe } 5585cda6587SParav Pandit } 5595cda6587SParav Pandit 5608d9ec9adSJason Gunthorpe ah = _rdma_create_ah(pd, ah_attr, udata); 5618d9ec9adSJason Gunthorpe 5628d9ec9adSJason Gunthorpe out: 5638d9ec9adSJason Gunthorpe rdma_unfill_sgid_attr(ah_attr, old_sgid_attr); 5648d9ec9adSJason Gunthorpe return ah; 5655cda6587SParav Pandit } 5665cda6587SParav Pandit EXPORT_SYMBOL(rdma_create_user_ah); 5675cda6587SParav Pandit 568850d8fd7SMoni Shoua int ib_get_rdma_header_version(const union rdma_network_hdr *hdr) 569c865f246SSomnath Kotur { 570c865f246SSomnath Kotur const struct iphdr *ip4h = (struct iphdr *)&hdr->roce4grh; 571c865f246SSomnath Kotur struct iphdr ip4h_checked; 572c865f246SSomnath Kotur const struct ipv6hdr *ip6h = (struct ipv6hdr *)&hdr->ibgrh; 573c865f246SSomnath Kotur 574c865f246SSomnath Kotur /* If it's IPv6, the version must be 6, otherwise, the first 575c865f246SSomnath Kotur * 20 bytes (before the IPv4 header) are garbled. 576c865f246SSomnath Kotur */ 577c865f246SSomnath Kotur if (ip6h->version != 6) 578c865f246SSomnath Kotur return (ip4h->version == 4) ? 4 : 0; 579c865f246SSomnath Kotur /* version may be 6 or 4 because the first 20 bytes could be garbled */ 580c865f246SSomnath Kotur 581c865f246SSomnath Kotur /* RoCE v2 requires no options, thus header length 582c865f246SSomnath Kotur * must be 5 words 583c865f246SSomnath Kotur */ 584c865f246SSomnath Kotur if (ip4h->ihl != 5) 585c865f246SSomnath Kotur return 6; 586c865f246SSomnath Kotur 587c865f246SSomnath Kotur /* Verify checksum. 588c865f246SSomnath Kotur * We can't write on scattered buffers so we need to copy to 589c865f246SSomnath Kotur * temp buffer. 590c865f246SSomnath Kotur */ 591c865f246SSomnath Kotur memcpy(&ip4h_checked, ip4h, sizeof(ip4h_checked)); 592c865f246SSomnath Kotur ip4h_checked.check = 0; 593c865f246SSomnath Kotur ip4h_checked.check = ip_fast_csum((u8 *)&ip4h_checked, 5); 594c865f246SSomnath Kotur /* if IPv4 header checksum is OK, believe it */ 595c865f246SSomnath Kotur if (ip4h->check == ip4h_checked.check) 596c865f246SSomnath Kotur return 4; 597c865f246SSomnath Kotur return 6; 598c865f246SSomnath Kotur } 599850d8fd7SMoni Shoua EXPORT_SYMBOL(ib_get_rdma_header_version); 600c865f246SSomnath Kotur 601c865f246SSomnath Kotur static enum rdma_network_type ib_get_net_type_by_grh(struct ib_device *device, 602c865f246SSomnath Kotur u8 port_num, 603c865f246SSomnath Kotur const struct ib_grh *grh) 604c865f246SSomnath Kotur { 605c865f246SSomnath Kotur int grh_version; 606c865f246SSomnath Kotur 607c865f246SSomnath Kotur if (rdma_protocol_ib(device, port_num)) 608c865f246SSomnath Kotur return RDMA_NETWORK_IB; 609c865f246SSomnath Kotur 610850d8fd7SMoni Shoua grh_version = ib_get_rdma_header_version((union rdma_network_hdr *)grh); 611c865f246SSomnath Kotur 612c865f246SSomnath Kotur if (grh_version == 4) 613c865f246SSomnath Kotur return RDMA_NETWORK_IPV4; 614c865f246SSomnath Kotur 615c865f246SSomnath Kotur if (grh->next_hdr == IPPROTO_UDP) 616c865f246SSomnath Kotur return RDMA_NETWORK_IPV6; 617c865f246SSomnath Kotur 618c865f246SSomnath Kotur return RDMA_NETWORK_ROCE_V1; 619c865f246SSomnath Kotur } 620c865f246SSomnath Kotur 621dbf727deSMatan Barak struct find_gid_index_context { 622dbf727deSMatan Barak u16 vlan_id; 623c865f246SSomnath Kotur enum ib_gid_type gid_type; 624dbf727deSMatan Barak }; 625dbf727deSMatan Barak 626dbf727deSMatan Barak static bool find_gid_index(const union ib_gid *gid, 627dbf727deSMatan Barak const struct ib_gid_attr *gid_attr, 628dbf727deSMatan Barak void *context) 629dbf727deSMatan Barak { 630b0dd0d33SParav Pandit struct find_gid_index_context *ctx = context; 631dbf727deSMatan Barak 632c865f246SSomnath Kotur if (ctx->gid_type != gid_attr->gid_type) 633c865f246SSomnath Kotur return false; 634c865f246SSomnath Kotur 635dbf727deSMatan Barak if ((!!(ctx->vlan_id != 0xffff) == !is_vlan_dev(gid_attr->ndev)) || 636dbf727deSMatan Barak (is_vlan_dev(gid_attr->ndev) && 637dbf727deSMatan Barak vlan_dev_vlan_id(gid_attr->ndev) != ctx->vlan_id)) 638dbf727deSMatan Barak return false; 639dbf727deSMatan Barak 640dbf727deSMatan Barak return true; 641dbf727deSMatan Barak } 642dbf727deSMatan Barak 643b7403217SParav Pandit static const struct ib_gid_attr * 644b7403217SParav Pandit get_sgid_attr_from_eth(struct ib_device *device, u8 port_num, 645dbf727deSMatan Barak u16 vlan_id, const union ib_gid *sgid, 646b7403217SParav Pandit enum ib_gid_type gid_type) 647dbf727deSMatan Barak { 648c865f246SSomnath Kotur struct find_gid_index_context context = {.vlan_id = vlan_id, 649c865f246SSomnath Kotur .gid_type = gid_type}; 650dbf727deSMatan Barak 651b7403217SParav Pandit return rdma_find_gid_by_filter(device, sgid, port_num, find_gid_index, 652b7403217SParav Pandit &context); 653dbf727deSMatan Barak } 654dbf727deSMatan Barak 655850d8fd7SMoni Shoua int ib_get_gids_from_rdma_hdr(const union rdma_network_hdr *hdr, 656c865f246SSomnath Kotur enum rdma_network_type net_type, 657c865f246SSomnath Kotur union ib_gid *sgid, union ib_gid *dgid) 658c865f246SSomnath Kotur { 659c865f246SSomnath Kotur struct sockaddr_in src_in; 660c865f246SSomnath Kotur struct sockaddr_in dst_in; 661c865f246SSomnath Kotur __be32 src_saddr, dst_saddr; 662c865f246SSomnath Kotur 663c865f246SSomnath Kotur if (!sgid || !dgid) 664c865f246SSomnath Kotur return -EINVAL; 665c865f246SSomnath Kotur 666c865f246SSomnath Kotur if (net_type == RDMA_NETWORK_IPV4) { 667c865f246SSomnath Kotur memcpy(&src_in.sin_addr.s_addr, 668c865f246SSomnath Kotur &hdr->roce4grh.saddr, 4); 669c865f246SSomnath Kotur memcpy(&dst_in.sin_addr.s_addr, 670c865f246SSomnath Kotur &hdr->roce4grh.daddr, 4); 671c865f246SSomnath Kotur src_saddr = src_in.sin_addr.s_addr; 672c865f246SSomnath Kotur dst_saddr = dst_in.sin_addr.s_addr; 673c865f246SSomnath Kotur ipv6_addr_set_v4mapped(src_saddr, 674c865f246SSomnath Kotur (struct in6_addr *)sgid); 675c865f246SSomnath Kotur ipv6_addr_set_v4mapped(dst_saddr, 676c865f246SSomnath Kotur (struct in6_addr *)dgid); 677c865f246SSomnath Kotur return 0; 678c865f246SSomnath Kotur } else if (net_type == RDMA_NETWORK_IPV6 || 679c865f246SSomnath Kotur net_type == RDMA_NETWORK_IB) { 680c865f246SSomnath Kotur *dgid = hdr->ibgrh.dgid; 681c865f246SSomnath Kotur *sgid = hdr->ibgrh.sgid; 682c865f246SSomnath Kotur return 0; 683c865f246SSomnath Kotur } else { 684c865f246SSomnath Kotur return -EINVAL; 685c865f246SSomnath Kotur } 686c865f246SSomnath Kotur } 687850d8fd7SMoni Shoua EXPORT_SYMBOL(ib_get_gids_from_rdma_hdr); 688c865f246SSomnath Kotur 6891060f865SParav Pandit /* Resolve destination mac address and hop limit for unicast destination 6901060f865SParav Pandit * GID entry, considering the source GID entry as well. 6911060f865SParav Pandit * ah_attribute must have have valid port_num, sgid_index. 6921060f865SParav Pandit */ 6931060f865SParav Pandit static int ib_resolve_unicast_gid_dmac(struct ib_device *device, 6941060f865SParav Pandit struct rdma_ah_attr *ah_attr) 6951060f865SParav Pandit { 696b7403217SParav Pandit struct ib_global_route *grh = rdma_ah_retrieve_grh(ah_attr); 697b7403217SParav Pandit const struct ib_gid_attr *sgid_attr = grh->sgid_attr; 6981060f865SParav Pandit int hop_limit = 0xff; 699b7403217SParav Pandit int ret = 0; 7001060f865SParav Pandit 70156d0a7d9SParav Pandit /* If destination is link local and source GID is RoCEv1, 70256d0a7d9SParav Pandit * IP stack is not used. 70356d0a7d9SParav Pandit */ 70456d0a7d9SParav Pandit if (rdma_link_local_addr((struct in6_addr *)grh->dgid.raw) && 705b7403217SParav Pandit sgid_attr->gid_type == IB_GID_TYPE_ROCE) { 70656d0a7d9SParav Pandit rdma_get_ll_mac((struct in6_addr *)grh->dgid.raw, 70756d0a7d9SParav Pandit ah_attr->roce.dmac); 708b7403217SParav Pandit return ret; 70956d0a7d9SParav Pandit } 71056d0a7d9SParav Pandit 711b7403217SParav Pandit ret = rdma_addr_find_l2_eth_by_grh(&sgid_attr->gid, &grh->dgid, 7121060f865SParav Pandit ah_attr->roce.dmac, 713b7403217SParav Pandit sgid_attr->ndev, &hop_limit); 7141060f865SParav Pandit 7151060f865SParav Pandit grh->hop_limit = hop_limit; 7161060f865SParav Pandit return ret; 7171060f865SParav Pandit } 7181060f865SParav Pandit 71928b5b3a2SGustavo A. R. Silva /* 720f6bdb142SParav Pandit * This function initializes address handle attributes from the incoming packet. 72128b5b3a2SGustavo A. R. Silva * Incoming packet has dgid of the receiver node on which this code is 72228b5b3a2SGustavo A. R. Silva * getting executed and, sgid contains the GID of the sender. 72328b5b3a2SGustavo A. R. Silva * 72428b5b3a2SGustavo A. R. Silva * When resolving mac address of destination, the arrived dgid is used 72528b5b3a2SGustavo A. R. Silva * as sgid and, sgid is used as dgid because sgid contains destinations 72628b5b3a2SGustavo A. R. Silva * GID whom to respond to. 72728b5b3a2SGustavo A. R. Silva * 728b7403217SParav Pandit * On success the caller is responsible to call rdma_destroy_ah_attr on the 729b7403217SParav Pandit * attr. 73028b5b3a2SGustavo A. R. Silva */ 731f6bdb142SParav Pandit int ib_init_ah_attr_from_wc(struct ib_device *device, u8 port_num, 73273cdaaeeSIra Weiny const struct ib_wc *wc, const struct ib_grh *grh, 73390898850SDasaratharaman Chandramouli struct rdma_ah_attr *ah_attr) 734513789edSHal Rosenstock { 735513789edSHal Rosenstock u32 flow_class; 736513789edSHal Rosenstock int ret; 737c865f246SSomnath Kotur enum rdma_network_type net_type = RDMA_NETWORK_IB; 738c865f246SSomnath Kotur enum ib_gid_type gid_type = IB_GID_TYPE_IB; 739b7403217SParav Pandit const struct ib_gid_attr *sgid_attr; 740c3efe750SMatan Barak int hoplimit = 0xff; 741c865f246SSomnath Kotur union ib_gid dgid; 742c865f246SSomnath Kotur union ib_gid sgid; 743513789edSHal Rosenstock 74479364227SRoland Dreier might_sleep(); 74579364227SRoland Dreier 7464e00d694SSean Hefty memset(ah_attr, 0, sizeof *ah_attr); 74744c58487SDasaratharaman Chandramouli ah_attr->type = rdma_ah_find_type(device, port_num); 748227128fcSMichael Wang if (rdma_cap_eth_ah(device, port_num)) { 749c865f246SSomnath Kotur if (wc->wc_flags & IB_WC_WITH_NETWORK_HDR_TYPE) 750c865f246SSomnath Kotur net_type = wc->network_hdr_type; 751c865f246SSomnath Kotur else 752c865f246SSomnath Kotur net_type = ib_get_net_type_by_grh(device, port_num, grh); 753c865f246SSomnath Kotur gid_type = ib_network_to_gid_type(net_type); 754c865f246SSomnath Kotur } 755850d8fd7SMoni Shoua ret = ib_get_gids_from_rdma_hdr((union rdma_network_hdr *)grh, net_type, 756c865f246SSomnath Kotur &sgid, &dgid); 757c865f246SSomnath Kotur if (ret) 758c865f246SSomnath Kotur return ret; 759c865f246SSomnath Kotur 7601060f865SParav Pandit rdma_ah_set_sl(ah_attr, wc->sl); 7611060f865SParav Pandit rdma_ah_set_port_num(ah_attr, port_num); 7621060f865SParav Pandit 763c865f246SSomnath Kotur if (rdma_protocol_roce(device, port_num)) { 764dbf727deSMatan Barak u16 vlan_id = wc->wc_flags & IB_WC_WITH_VLAN ? 765dbf727deSMatan Barak wc->vlan_id : 0xffff; 766dbf727deSMatan Barak 767dd5f03beSMatan Barak if (!(wc->wc_flags & IB_WC_GRH)) 768dd5f03beSMatan Barak return -EPROTOTYPE; 769dd5f03beSMatan Barak 770b7403217SParav Pandit sgid_attr = get_sgid_attr_from_eth(device, port_num, 7711060f865SParav Pandit vlan_id, &dgid, 772b7403217SParav Pandit gid_type); 773b7403217SParav Pandit if (IS_ERR(sgid_attr)) 774b7403217SParav Pandit return PTR_ERR(sgid_attr); 77520029832SMatan Barak 7761060f865SParav Pandit flow_class = be32_to_cpu(grh->version_tclass_flow); 777b7403217SParav Pandit rdma_move_grh_sgid_attr(ah_attr, 778b7403217SParav Pandit &sgid, 7791060f865SParav Pandit flow_class & 0xFFFFF, 780b7403217SParav Pandit hoplimit, 781b7403217SParav Pandit (flow_class >> 20) & 0xFF, 782b7403217SParav Pandit sgid_attr); 783b7403217SParav Pandit 784b7403217SParav Pandit ret = ib_resolve_unicast_gid_dmac(device, ah_attr); 785b7403217SParav Pandit if (ret) 786b7403217SParav Pandit rdma_destroy_ah_attr(ah_attr); 787b7403217SParav Pandit 788b7403217SParav Pandit return ret; 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 793b7403217SParav Pandit if ((wc->wc_flags & IB_WC_GRH) == 0) 794b7403217SParav Pandit return 0; 795513789edSHal Rosenstock 796b7403217SParav Pandit if (dgid.global.interface_id != 797b7403217SParav Pandit cpu_to_be64(IB_SA_WELL_KNOWN_GUID)) { 798b7403217SParav Pandit sgid_attr = rdma_find_gid_by_port( 799b7403217SParav Pandit device, &dgid, IB_GID_TYPE_IB, port_num, NULL); 800b7403217SParav Pandit } else 801b7403217SParav Pandit sgid_attr = rdma_get_gid_attr(device, port_num, 0); 802b7403217SParav Pandit 803b7403217SParav Pandit if (IS_ERR(sgid_attr)) 804b7403217SParav Pandit return PTR_ERR(sgid_attr); 805497677abSHal Rosenstock flow_class = be32_to_cpu(grh->version_tclass_flow); 806b7403217SParav Pandit rdma_move_grh_sgid_attr(ah_attr, 807b7403217SParav Pandit &sgid, 808d8966fcdSDasaratharaman Chandramouli flow_class & 0xFFFFF, 809b7403217SParav Pandit hoplimit, 810b7403217SParav Pandit (flow_class >> 20) & 0xFF, 811b7403217SParav Pandit sgid_attr); 812b7403217SParav Pandit 8134e00d694SSean Hefty return 0; 8144e00d694SSean Hefty } 8151060f865SParav Pandit } 816f6bdb142SParav Pandit EXPORT_SYMBOL(ib_init_ah_attr_from_wc); 8174e00d694SSean Hefty 8188d9ec9adSJason Gunthorpe /** 8198d9ec9adSJason Gunthorpe * rdma_move_grh_sgid_attr - Sets the sgid attribute of GRH, taking ownership 8208d9ec9adSJason Gunthorpe * of the reference 8218d9ec9adSJason Gunthorpe * 8228d9ec9adSJason Gunthorpe * @attr: Pointer to AH attribute structure 8238d9ec9adSJason Gunthorpe * @dgid: Destination GID 8248d9ec9adSJason Gunthorpe * @flow_label: Flow label 8258d9ec9adSJason Gunthorpe * @hop_limit: Hop limit 8268d9ec9adSJason Gunthorpe * @traffic_class: traffic class 8278d9ec9adSJason Gunthorpe * @sgid_attr: Pointer to SGID attribute 8288d9ec9adSJason Gunthorpe * 8298d9ec9adSJason Gunthorpe * This takes ownership of the sgid_attr reference. The caller must ensure 8308d9ec9adSJason Gunthorpe * rdma_destroy_ah_attr() is called before destroying the rdma_ah_attr after 8318d9ec9adSJason Gunthorpe * calling this function. 8328d9ec9adSJason Gunthorpe */ 8338d9ec9adSJason Gunthorpe void rdma_move_grh_sgid_attr(struct rdma_ah_attr *attr, union ib_gid *dgid, 8348d9ec9adSJason Gunthorpe u32 flow_label, u8 hop_limit, u8 traffic_class, 8358d9ec9adSJason Gunthorpe const struct ib_gid_attr *sgid_attr) 8368d9ec9adSJason Gunthorpe { 8378d9ec9adSJason Gunthorpe rdma_ah_set_grh(attr, dgid, flow_label, sgid_attr->index, hop_limit, 8388d9ec9adSJason Gunthorpe traffic_class); 8398d9ec9adSJason Gunthorpe attr->grh.sgid_attr = sgid_attr; 8408d9ec9adSJason Gunthorpe } 8418d9ec9adSJason Gunthorpe EXPORT_SYMBOL(rdma_move_grh_sgid_attr); 8428d9ec9adSJason Gunthorpe 8438d9ec9adSJason Gunthorpe /** 8448d9ec9adSJason Gunthorpe * rdma_destroy_ah_attr - Release reference to SGID attribute of 8458d9ec9adSJason Gunthorpe * ah attribute. 8468d9ec9adSJason Gunthorpe * @ah_attr: Pointer to ah attribute 8478d9ec9adSJason Gunthorpe * 8488d9ec9adSJason Gunthorpe * Release reference to the SGID attribute of the ah attribute if it is 8498d9ec9adSJason Gunthorpe * non NULL. It is safe to call this multiple times, and safe to call it on 8508d9ec9adSJason Gunthorpe * a zero initialized ah_attr. 8518d9ec9adSJason Gunthorpe */ 8528d9ec9adSJason Gunthorpe void rdma_destroy_ah_attr(struct rdma_ah_attr *ah_attr) 8538d9ec9adSJason Gunthorpe { 8548d9ec9adSJason Gunthorpe if (ah_attr->grh.sgid_attr) { 8558d9ec9adSJason Gunthorpe rdma_put_gid_attr(ah_attr->grh.sgid_attr); 8568d9ec9adSJason Gunthorpe ah_attr->grh.sgid_attr = NULL; 8578d9ec9adSJason Gunthorpe } 8588d9ec9adSJason Gunthorpe } 8598d9ec9adSJason Gunthorpe EXPORT_SYMBOL(rdma_destroy_ah_attr); 8608d9ec9adSJason Gunthorpe 86173cdaaeeSIra Weiny struct ib_ah *ib_create_ah_from_wc(struct ib_pd *pd, const struct ib_wc *wc, 86273cdaaeeSIra Weiny const struct ib_grh *grh, u8 port_num) 8634e00d694SSean Hefty { 86490898850SDasaratharaman Chandramouli struct rdma_ah_attr ah_attr; 865b7403217SParav Pandit struct ib_ah *ah; 8664e00d694SSean Hefty int ret; 8674e00d694SSean Hefty 868f6bdb142SParav Pandit ret = ib_init_ah_attr_from_wc(pd->device, port_num, wc, grh, &ah_attr); 8694e00d694SSean Hefty if (ret) 8704e00d694SSean Hefty return ERR_PTR(ret); 871513789edSHal Rosenstock 872b7403217SParav Pandit ah = rdma_create_ah(pd, &ah_attr); 873b7403217SParav Pandit 874b7403217SParav Pandit rdma_destroy_ah_attr(&ah_attr); 875b7403217SParav Pandit return ah; 876513789edSHal Rosenstock } 877513789edSHal Rosenstock EXPORT_SYMBOL(ib_create_ah_from_wc); 878513789edSHal Rosenstock 87967b985b6SDasaratharaman Chandramouli int rdma_modify_ah(struct ib_ah *ah, struct rdma_ah_attr *ah_attr) 8801da177e4SLinus Torvalds { 8818d9ec9adSJason Gunthorpe const struct ib_gid_attr *old_sgid_attr; 8828d9ec9adSJason Gunthorpe int ret; 8838d9ec9adSJason Gunthorpe 88444c58487SDasaratharaman Chandramouli if (ah->type != ah_attr->type) 88544c58487SDasaratharaman Chandramouli return -EINVAL; 88644c58487SDasaratharaman Chandramouli 8878d9ec9adSJason Gunthorpe ret = rdma_fill_sgid_attr(ah->device, ah_attr, &old_sgid_attr); 8888d9ec9adSJason Gunthorpe if (ret) 8898d9ec9adSJason Gunthorpe return ret; 8908d9ec9adSJason Gunthorpe 8918d9ec9adSJason Gunthorpe ret = ah->device->modify_ah ? 8921da177e4SLinus Torvalds ah->device->modify_ah(ah, ah_attr) : 89387915bf8SLeon Romanovsky -EOPNOTSUPP; 8948d9ec9adSJason Gunthorpe 8951a1f460fSJason Gunthorpe ah->sgid_attr = rdma_update_sgid_attr(ah_attr, ah->sgid_attr); 8968d9ec9adSJason Gunthorpe rdma_unfill_sgid_attr(ah_attr, old_sgid_attr); 8978d9ec9adSJason Gunthorpe return ret; 8981da177e4SLinus Torvalds } 89967b985b6SDasaratharaman Chandramouli EXPORT_SYMBOL(rdma_modify_ah); 9001da177e4SLinus Torvalds 901bfbfd661SDasaratharaman Chandramouli int rdma_query_ah(struct ib_ah *ah, struct rdma_ah_attr *ah_attr) 9021da177e4SLinus Torvalds { 9038d9ec9adSJason Gunthorpe ah_attr->grh.sgid_attr = NULL; 9048d9ec9adSJason Gunthorpe 9051da177e4SLinus Torvalds return ah->device->query_ah ? 9061da177e4SLinus Torvalds ah->device->query_ah(ah, ah_attr) : 90787915bf8SLeon Romanovsky -EOPNOTSUPP; 9081da177e4SLinus Torvalds } 909bfbfd661SDasaratharaman Chandramouli EXPORT_SYMBOL(rdma_query_ah); 9101da177e4SLinus Torvalds 91136523159SDasaratharaman Chandramouli int rdma_destroy_ah(struct ib_ah *ah) 9121da177e4SLinus Torvalds { 9131a1f460fSJason Gunthorpe const struct ib_gid_attr *sgid_attr = ah->sgid_attr; 9141da177e4SLinus Torvalds struct ib_pd *pd; 9151da177e4SLinus Torvalds int ret; 9161da177e4SLinus Torvalds 9171da177e4SLinus Torvalds pd = ah->pd; 9181da177e4SLinus Torvalds ret = ah->device->destroy_ah(ah); 9191a1f460fSJason Gunthorpe if (!ret) { 9201da177e4SLinus Torvalds atomic_dec(&pd->usecnt); 9211a1f460fSJason Gunthorpe if (sgid_attr) 9221a1f460fSJason Gunthorpe rdma_put_gid_attr(sgid_attr); 9231a1f460fSJason Gunthorpe } 9241da177e4SLinus Torvalds 9251da177e4SLinus Torvalds return ret; 9261da177e4SLinus Torvalds } 92736523159SDasaratharaman Chandramouli EXPORT_SYMBOL(rdma_destroy_ah); 9281da177e4SLinus Torvalds 929d41fcc67SRoland Dreier /* Shared receive queues */ 930d41fcc67SRoland Dreier 931d41fcc67SRoland Dreier struct ib_srq *ib_create_srq(struct ib_pd *pd, 932d41fcc67SRoland Dreier struct ib_srq_init_attr *srq_init_attr) 933d41fcc67SRoland Dreier { 934d41fcc67SRoland Dreier struct ib_srq *srq; 935d41fcc67SRoland Dreier 936d41fcc67SRoland Dreier if (!pd->device->create_srq) 93787915bf8SLeon Romanovsky return ERR_PTR(-EOPNOTSUPP); 938d41fcc67SRoland Dreier 939d41fcc67SRoland Dreier srq = pd->device->create_srq(pd, srq_init_attr, NULL); 940d41fcc67SRoland Dreier 941d41fcc67SRoland Dreier if (!IS_ERR(srq)) { 942d41fcc67SRoland Dreier srq->device = pd->device; 943d41fcc67SRoland Dreier srq->pd = pd; 944d41fcc67SRoland Dreier srq->uobject = NULL; 945d41fcc67SRoland Dreier srq->event_handler = srq_init_attr->event_handler; 946d41fcc67SRoland Dreier srq->srq_context = srq_init_attr->srq_context; 94796104edaSSean Hefty srq->srq_type = srq_init_attr->srq_type; 9481a56ff6dSArtemy Kovalyov if (ib_srq_has_cq(srq->srq_type)) { 9491a56ff6dSArtemy Kovalyov srq->ext.cq = srq_init_attr->ext.cq; 9501a56ff6dSArtemy Kovalyov atomic_inc(&srq->ext.cq->usecnt); 9511a56ff6dSArtemy Kovalyov } 952418d5130SSean Hefty if (srq->srq_type == IB_SRQT_XRC) { 953418d5130SSean Hefty srq->ext.xrc.xrcd = srq_init_attr->ext.xrc.xrcd; 954418d5130SSean Hefty atomic_inc(&srq->ext.xrc.xrcd->usecnt); 955418d5130SSean Hefty } 956d41fcc67SRoland Dreier atomic_inc(&pd->usecnt); 957d41fcc67SRoland Dreier atomic_set(&srq->usecnt, 0); 958d41fcc67SRoland Dreier } 959d41fcc67SRoland Dreier 960d41fcc67SRoland Dreier return srq; 961d41fcc67SRoland Dreier } 962d41fcc67SRoland Dreier EXPORT_SYMBOL(ib_create_srq); 963d41fcc67SRoland Dreier 964d41fcc67SRoland Dreier int ib_modify_srq(struct ib_srq *srq, 965d41fcc67SRoland Dreier struct ib_srq_attr *srq_attr, 966d41fcc67SRoland Dreier enum ib_srq_attr_mask srq_attr_mask) 967d41fcc67SRoland Dreier { 9687ce5eacbSDotan Barak return srq->device->modify_srq ? 9697ce5eacbSDotan Barak srq->device->modify_srq(srq, srq_attr, srq_attr_mask, NULL) : 97087915bf8SLeon Romanovsky -EOPNOTSUPP; 971d41fcc67SRoland Dreier } 972d41fcc67SRoland Dreier EXPORT_SYMBOL(ib_modify_srq); 973d41fcc67SRoland Dreier 974d41fcc67SRoland Dreier int ib_query_srq(struct ib_srq *srq, 975d41fcc67SRoland Dreier struct ib_srq_attr *srq_attr) 976d41fcc67SRoland Dreier { 977d41fcc67SRoland Dreier return srq->device->query_srq ? 97887915bf8SLeon Romanovsky srq->device->query_srq(srq, srq_attr) : -EOPNOTSUPP; 979d41fcc67SRoland Dreier } 980d41fcc67SRoland Dreier EXPORT_SYMBOL(ib_query_srq); 981d41fcc67SRoland Dreier 982d41fcc67SRoland Dreier int ib_destroy_srq(struct ib_srq *srq) 983d41fcc67SRoland Dreier { 984d41fcc67SRoland Dreier struct ib_pd *pd; 985418d5130SSean Hefty enum ib_srq_type srq_type; 986418d5130SSean Hefty struct ib_xrcd *uninitialized_var(xrcd); 987418d5130SSean Hefty struct ib_cq *uninitialized_var(cq); 988d41fcc67SRoland Dreier int ret; 989d41fcc67SRoland Dreier 990d41fcc67SRoland Dreier if (atomic_read(&srq->usecnt)) 991d41fcc67SRoland Dreier return -EBUSY; 992d41fcc67SRoland Dreier 993d41fcc67SRoland Dreier pd = srq->pd; 994418d5130SSean Hefty srq_type = srq->srq_type; 9951a56ff6dSArtemy Kovalyov if (ib_srq_has_cq(srq_type)) 9961a56ff6dSArtemy Kovalyov cq = srq->ext.cq; 9971a56ff6dSArtemy Kovalyov if (srq_type == IB_SRQT_XRC) 998418d5130SSean Hefty xrcd = srq->ext.xrc.xrcd; 999d41fcc67SRoland Dreier 1000d41fcc67SRoland Dreier ret = srq->device->destroy_srq(srq); 1001418d5130SSean Hefty if (!ret) { 1002d41fcc67SRoland Dreier atomic_dec(&pd->usecnt); 10031a56ff6dSArtemy Kovalyov if (srq_type == IB_SRQT_XRC) 1004418d5130SSean Hefty atomic_dec(&xrcd->usecnt); 10051a56ff6dSArtemy Kovalyov if (ib_srq_has_cq(srq_type)) 1006418d5130SSean Hefty atomic_dec(&cq->usecnt); 1007418d5130SSean Hefty } 1008d41fcc67SRoland Dreier 1009d41fcc67SRoland Dreier return ret; 1010d41fcc67SRoland Dreier } 1011d41fcc67SRoland Dreier EXPORT_SYMBOL(ib_destroy_srq); 1012d41fcc67SRoland Dreier 10131da177e4SLinus Torvalds /* Queue pairs */ 10141da177e4SLinus Torvalds 10150e0ec7e0SSean Hefty static void __ib_shared_qp_event_handler(struct ib_event *event, void *context) 10160e0ec7e0SSean Hefty { 10170e0ec7e0SSean Hefty struct ib_qp *qp = context; 101873c40c61SYishai Hadas unsigned long flags; 10190e0ec7e0SSean Hefty 102073c40c61SYishai Hadas spin_lock_irqsave(&qp->device->event_handler_lock, flags); 10210e0ec7e0SSean Hefty list_for_each_entry(event->element.qp, &qp->open_list, open_list) 1022eec9e29fSShlomo Pongratz if (event->element.qp->event_handler) 10230e0ec7e0SSean Hefty event->element.qp->event_handler(event, event->element.qp->qp_context); 102473c40c61SYishai Hadas spin_unlock_irqrestore(&qp->device->event_handler_lock, flags); 10250e0ec7e0SSean Hefty } 10260e0ec7e0SSean Hefty 1027d3d72d90SSean Hefty static void __ib_insert_xrcd_qp(struct ib_xrcd *xrcd, struct ib_qp *qp) 1028d3d72d90SSean Hefty { 1029d3d72d90SSean Hefty mutex_lock(&xrcd->tgt_qp_mutex); 1030d3d72d90SSean Hefty list_add(&qp->xrcd_list, &xrcd->tgt_qp_list); 1031d3d72d90SSean Hefty mutex_unlock(&xrcd->tgt_qp_mutex); 1032d3d72d90SSean Hefty } 1033d3d72d90SSean Hefty 10340e0ec7e0SSean Hefty static struct ib_qp *__ib_open_qp(struct ib_qp *real_qp, 10350e0ec7e0SSean Hefty void (*event_handler)(struct ib_event *, void *), 10360e0ec7e0SSean Hefty void *qp_context) 1037d3d72d90SSean Hefty { 10380e0ec7e0SSean Hefty struct ib_qp *qp; 10390e0ec7e0SSean Hefty unsigned long flags; 1040d291f1a6SDaniel Jurgens int err; 10410e0ec7e0SSean Hefty 10420e0ec7e0SSean Hefty qp = kzalloc(sizeof *qp, GFP_KERNEL); 10430e0ec7e0SSean Hefty if (!qp) 10440e0ec7e0SSean Hefty return ERR_PTR(-ENOMEM); 10450e0ec7e0SSean Hefty 10460e0ec7e0SSean Hefty qp->real_qp = real_qp; 1047d291f1a6SDaniel Jurgens err = ib_open_shared_qp_security(qp, real_qp->device); 1048d291f1a6SDaniel Jurgens if (err) { 1049d291f1a6SDaniel Jurgens kfree(qp); 1050d291f1a6SDaniel Jurgens return ERR_PTR(err); 1051d291f1a6SDaniel Jurgens } 1052d291f1a6SDaniel Jurgens 1053d291f1a6SDaniel Jurgens qp->real_qp = real_qp; 10540e0ec7e0SSean Hefty atomic_inc(&real_qp->usecnt); 10550e0ec7e0SSean Hefty qp->device = real_qp->device; 10560e0ec7e0SSean Hefty qp->event_handler = event_handler; 10570e0ec7e0SSean Hefty qp->qp_context = qp_context; 10580e0ec7e0SSean Hefty qp->qp_num = real_qp->qp_num; 10590e0ec7e0SSean Hefty qp->qp_type = real_qp->qp_type; 10600e0ec7e0SSean Hefty 10610e0ec7e0SSean Hefty spin_lock_irqsave(&real_qp->device->event_handler_lock, flags); 10620e0ec7e0SSean Hefty list_add(&qp->open_list, &real_qp->open_list); 10630e0ec7e0SSean Hefty spin_unlock_irqrestore(&real_qp->device->event_handler_lock, flags); 10640e0ec7e0SSean Hefty 10650e0ec7e0SSean Hefty return qp; 1066d3d72d90SSean Hefty } 1067d3d72d90SSean Hefty 10680e0ec7e0SSean Hefty struct ib_qp *ib_open_qp(struct ib_xrcd *xrcd, 10690e0ec7e0SSean Hefty struct ib_qp_open_attr *qp_open_attr) 10700e0ec7e0SSean Hefty { 10710e0ec7e0SSean Hefty struct ib_qp *qp, *real_qp; 10720e0ec7e0SSean Hefty 10730e0ec7e0SSean Hefty if (qp_open_attr->qp_type != IB_QPT_XRC_TGT) 10740e0ec7e0SSean Hefty return ERR_PTR(-EINVAL); 10750e0ec7e0SSean Hefty 10760e0ec7e0SSean Hefty qp = ERR_PTR(-EINVAL); 10770e0ec7e0SSean Hefty mutex_lock(&xrcd->tgt_qp_mutex); 10780e0ec7e0SSean Hefty list_for_each_entry(real_qp, &xrcd->tgt_qp_list, xrcd_list) { 10790e0ec7e0SSean Hefty if (real_qp->qp_num == qp_open_attr->qp_num) { 10800e0ec7e0SSean Hefty qp = __ib_open_qp(real_qp, qp_open_attr->event_handler, 10810e0ec7e0SSean Hefty qp_open_attr->qp_context); 10820e0ec7e0SSean Hefty break; 10830e0ec7e0SSean Hefty } 10840e0ec7e0SSean Hefty } 10850e0ec7e0SSean Hefty mutex_unlock(&xrcd->tgt_qp_mutex); 10860e0ec7e0SSean Hefty return qp; 10870e0ec7e0SSean Hefty } 10880e0ec7e0SSean Hefty EXPORT_SYMBOL(ib_open_qp); 10890e0ec7e0SSean Hefty 109004c41bf3SChristoph Hellwig static struct ib_qp *ib_create_xrc_qp(struct ib_qp *qp, 10911da177e4SLinus Torvalds struct ib_qp_init_attr *qp_init_attr) 10921da177e4SLinus Torvalds { 109304c41bf3SChristoph Hellwig struct ib_qp *real_qp = qp; 10941da177e4SLinus Torvalds 10950e0ec7e0SSean Hefty qp->event_handler = __ib_shared_qp_event_handler; 10960e0ec7e0SSean Hefty qp->qp_context = qp; 1097b42b63cfSSean Hefty qp->pd = NULL; 1098b42b63cfSSean Hefty qp->send_cq = qp->recv_cq = NULL; 1099b42b63cfSSean Hefty qp->srq = NULL; 1100b42b63cfSSean Hefty qp->xrcd = qp_init_attr->xrcd; 1101b42b63cfSSean Hefty atomic_inc(&qp_init_attr->xrcd->usecnt); 11020e0ec7e0SSean Hefty INIT_LIST_HEAD(&qp->open_list); 11030e0ec7e0SSean Hefty 11040e0ec7e0SSean Hefty qp = __ib_open_qp(real_qp, qp_init_attr->event_handler, 11050e0ec7e0SSean Hefty qp_init_attr->qp_context); 11060e0ec7e0SSean Hefty if (!IS_ERR(qp)) 11070e0ec7e0SSean Hefty __ib_insert_xrcd_qp(qp_init_attr->xrcd, real_qp); 11080e0ec7e0SSean Hefty else 11090e0ec7e0SSean Hefty real_qp->device->destroy_qp(real_qp); 111004c41bf3SChristoph Hellwig return qp; 111104c41bf3SChristoph Hellwig } 111204c41bf3SChristoph Hellwig 111304c41bf3SChristoph Hellwig struct ib_qp *ib_create_qp(struct ib_pd *pd, 111404c41bf3SChristoph Hellwig struct ib_qp_init_attr *qp_init_attr) 111504c41bf3SChristoph Hellwig { 111604c41bf3SChristoph Hellwig struct ib_device *device = pd ? pd->device : qp_init_attr->xrcd->device; 111704c41bf3SChristoph Hellwig struct ib_qp *qp; 1118a060b562SChristoph Hellwig int ret; 1119a060b562SChristoph Hellwig 1120a9017e23SYishai Hadas if (qp_init_attr->rwq_ind_tbl && 1121a9017e23SYishai Hadas (qp_init_attr->recv_cq || 1122a9017e23SYishai Hadas qp_init_attr->srq || qp_init_attr->cap.max_recv_wr || 1123a9017e23SYishai Hadas qp_init_attr->cap.max_recv_sge)) 1124a9017e23SYishai Hadas return ERR_PTR(-EINVAL); 1125a9017e23SYishai Hadas 1126a060b562SChristoph Hellwig /* 1127a060b562SChristoph Hellwig * If the callers is using the RDMA API calculate the resources 1128a060b562SChristoph Hellwig * needed for the RDMA READ/WRITE operations. 1129a060b562SChristoph Hellwig * 1130a060b562SChristoph Hellwig * Note that these callers need to pass in a port number. 1131a060b562SChristoph Hellwig */ 1132a060b562SChristoph Hellwig if (qp_init_attr->cap.max_rdma_ctxs) 1133a060b562SChristoph Hellwig rdma_rw_init_qp(device, qp_init_attr); 113404c41bf3SChristoph Hellwig 11352f08ee36SSteve Wise qp = _ib_create_qp(device, pd, qp_init_attr, NULL, NULL); 113604c41bf3SChristoph Hellwig if (IS_ERR(qp)) 113704c41bf3SChristoph Hellwig return qp; 113804c41bf3SChristoph Hellwig 1139d291f1a6SDaniel Jurgens ret = ib_create_qp_security(qp, device); 1140d291f1a6SDaniel Jurgens if (ret) { 1141d291f1a6SDaniel Jurgens ib_destroy_qp(qp); 1142d291f1a6SDaniel Jurgens return ERR_PTR(ret); 1143d291f1a6SDaniel Jurgens } 1144d291f1a6SDaniel Jurgens 114504c41bf3SChristoph Hellwig qp->real_qp = qp; 114604c41bf3SChristoph Hellwig qp->qp_type = qp_init_attr->qp_type; 1147a9017e23SYishai Hadas qp->rwq_ind_tbl = qp_init_attr->rwq_ind_tbl; 114804c41bf3SChristoph Hellwig 114904c41bf3SChristoph Hellwig atomic_set(&qp->usecnt, 0); 1150fffb0383SChristoph Hellwig qp->mrs_used = 0; 1151fffb0383SChristoph Hellwig spin_lock_init(&qp->mr_lock); 1152a060b562SChristoph Hellwig INIT_LIST_HEAD(&qp->rdma_mrs); 11530e353e34SChristoph Hellwig INIT_LIST_HEAD(&qp->sig_mrs); 1154498ca3c8SNoa Osherovich qp->port = 0; 1155fffb0383SChristoph Hellwig 115604c41bf3SChristoph Hellwig if (qp_init_attr->qp_type == IB_QPT_XRC_TGT) 115704c41bf3SChristoph Hellwig return ib_create_xrc_qp(qp, qp_init_attr); 115804c41bf3SChristoph Hellwig 11591da177e4SLinus Torvalds qp->event_handler = qp_init_attr->event_handler; 11601da177e4SLinus Torvalds qp->qp_context = qp_init_attr->qp_context; 1161b42b63cfSSean Hefty if (qp_init_attr->qp_type == IB_QPT_XRC_INI) { 1162b42b63cfSSean Hefty qp->recv_cq = NULL; 1163b42b63cfSSean Hefty qp->srq = NULL; 1164b42b63cfSSean Hefty } else { 1165b42b63cfSSean Hefty qp->recv_cq = qp_init_attr->recv_cq; 1166a9017e23SYishai Hadas if (qp_init_attr->recv_cq) 1167b42b63cfSSean Hefty atomic_inc(&qp_init_attr->recv_cq->usecnt); 1168b42b63cfSSean Hefty qp->srq = qp_init_attr->srq; 1169b42b63cfSSean Hefty if (qp->srq) 1170b42b63cfSSean Hefty atomic_inc(&qp_init_attr->srq->usecnt); 1171b42b63cfSSean Hefty } 1172b42b63cfSSean Hefty 11731da177e4SLinus Torvalds qp->send_cq = qp_init_attr->send_cq; 1174b42b63cfSSean Hefty qp->xrcd = NULL; 1175b42b63cfSSean Hefty 11761da177e4SLinus Torvalds atomic_inc(&pd->usecnt); 1177a9017e23SYishai Hadas if (qp_init_attr->send_cq) 11781da177e4SLinus Torvalds atomic_inc(&qp_init_attr->send_cq->usecnt); 1179a9017e23SYishai Hadas if (qp_init_attr->rwq_ind_tbl) 1180a9017e23SYishai Hadas atomic_inc(&qp->rwq_ind_tbl->usecnt); 1181a060b562SChristoph Hellwig 1182a060b562SChristoph Hellwig if (qp_init_attr->cap.max_rdma_ctxs) { 1183a060b562SChristoph Hellwig ret = rdma_rw_init_mrs(qp, qp_init_attr); 1184a060b562SChristoph Hellwig if (ret) { 1185a060b562SChristoph Hellwig pr_err("failed to init MR pool ret= %d\n", ret); 1186a060b562SChristoph Hellwig ib_destroy_qp(qp); 1187b6bc1c73SSteve Wise return ERR_PTR(ret); 1188a060b562SChristoph Hellwig } 1189a060b562SChristoph Hellwig } 1190a060b562SChristoph Hellwig 1191632bc3f6SBart Van Assche /* 1192632bc3f6SBart Van Assche * Note: all hw drivers guarantee that max_send_sge is lower than 1193632bc3f6SBart Van Assche * the device RDMA WRITE SGE limit but not all hw drivers ensure that 1194632bc3f6SBart Van Assche * max_send_sge <= max_sge_rd. 1195632bc3f6SBart Van Assche */ 1196632bc3f6SBart Van Assche qp->max_write_sge = qp_init_attr->cap.max_send_sge; 1197632bc3f6SBart Van Assche qp->max_read_sge = min_t(u32, qp_init_attr->cap.max_send_sge, 1198632bc3f6SBart Van Assche device->attrs.max_sge_rd); 1199632bc3f6SBart Van Assche 12001da177e4SLinus Torvalds return qp; 12011da177e4SLinus Torvalds } 12021da177e4SLinus Torvalds EXPORT_SYMBOL(ib_create_qp); 12031da177e4SLinus Torvalds 12048a51866fSRoland Dreier static const struct { 12058a51866fSRoland Dreier int valid; 1206b42b63cfSSean Hefty enum ib_qp_attr_mask req_param[IB_QPT_MAX]; 1207b42b63cfSSean Hefty enum ib_qp_attr_mask opt_param[IB_QPT_MAX]; 12088a51866fSRoland Dreier } qp_state_table[IB_QPS_ERR + 1][IB_QPS_ERR + 1] = { 12098a51866fSRoland Dreier [IB_QPS_RESET] = { 12108a51866fSRoland Dreier [IB_QPS_RESET] = { .valid = 1 }, 12118a51866fSRoland Dreier [IB_QPS_INIT] = { 12128a51866fSRoland Dreier .valid = 1, 12138a51866fSRoland Dreier .req_param = { 12148a51866fSRoland Dreier [IB_QPT_UD] = (IB_QP_PKEY_INDEX | 12158a51866fSRoland Dreier IB_QP_PORT | 12168a51866fSRoland Dreier IB_QP_QKEY), 1217c938a616SOr Gerlitz [IB_QPT_RAW_PACKET] = IB_QP_PORT, 12188a51866fSRoland Dreier [IB_QPT_UC] = (IB_QP_PKEY_INDEX | 12198a51866fSRoland Dreier IB_QP_PORT | 12208a51866fSRoland Dreier IB_QP_ACCESS_FLAGS), 12218a51866fSRoland Dreier [IB_QPT_RC] = (IB_QP_PKEY_INDEX | 12228a51866fSRoland Dreier IB_QP_PORT | 12238a51866fSRoland Dreier IB_QP_ACCESS_FLAGS), 1224b42b63cfSSean Hefty [IB_QPT_XRC_INI] = (IB_QP_PKEY_INDEX | 1225b42b63cfSSean Hefty IB_QP_PORT | 1226b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS), 1227b42b63cfSSean Hefty [IB_QPT_XRC_TGT] = (IB_QP_PKEY_INDEX | 1228b42b63cfSSean Hefty IB_QP_PORT | 1229b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS), 12308a51866fSRoland Dreier [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | 12318a51866fSRoland Dreier IB_QP_QKEY), 12328a51866fSRoland Dreier [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | 12338a51866fSRoland Dreier IB_QP_QKEY), 12348a51866fSRoland Dreier } 12358a51866fSRoland Dreier }, 12368a51866fSRoland Dreier }, 12378a51866fSRoland Dreier [IB_QPS_INIT] = { 12388a51866fSRoland Dreier [IB_QPS_RESET] = { .valid = 1 }, 12398a51866fSRoland Dreier [IB_QPS_ERR] = { .valid = 1 }, 12408a51866fSRoland Dreier [IB_QPS_INIT] = { 12418a51866fSRoland Dreier .valid = 1, 12428a51866fSRoland Dreier .opt_param = { 12438a51866fSRoland Dreier [IB_QPT_UD] = (IB_QP_PKEY_INDEX | 12448a51866fSRoland Dreier IB_QP_PORT | 12458a51866fSRoland Dreier IB_QP_QKEY), 12468a51866fSRoland Dreier [IB_QPT_UC] = (IB_QP_PKEY_INDEX | 12478a51866fSRoland Dreier IB_QP_PORT | 12488a51866fSRoland Dreier IB_QP_ACCESS_FLAGS), 12498a51866fSRoland Dreier [IB_QPT_RC] = (IB_QP_PKEY_INDEX | 12508a51866fSRoland Dreier IB_QP_PORT | 12518a51866fSRoland Dreier IB_QP_ACCESS_FLAGS), 1252b42b63cfSSean Hefty [IB_QPT_XRC_INI] = (IB_QP_PKEY_INDEX | 1253b42b63cfSSean Hefty IB_QP_PORT | 1254b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS), 1255b42b63cfSSean Hefty [IB_QPT_XRC_TGT] = (IB_QP_PKEY_INDEX | 1256b42b63cfSSean Hefty IB_QP_PORT | 1257b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS), 12588a51866fSRoland Dreier [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | 12598a51866fSRoland Dreier IB_QP_QKEY), 12608a51866fSRoland Dreier [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | 12618a51866fSRoland Dreier IB_QP_QKEY), 12628a51866fSRoland Dreier } 12638a51866fSRoland Dreier }, 12648a51866fSRoland Dreier [IB_QPS_RTR] = { 12658a51866fSRoland Dreier .valid = 1, 12668a51866fSRoland Dreier .req_param = { 12678a51866fSRoland Dreier [IB_QPT_UC] = (IB_QP_AV | 12688a51866fSRoland Dreier IB_QP_PATH_MTU | 12698a51866fSRoland Dreier IB_QP_DEST_QPN | 12708a51866fSRoland Dreier IB_QP_RQ_PSN), 12718a51866fSRoland Dreier [IB_QPT_RC] = (IB_QP_AV | 12728a51866fSRoland Dreier IB_QP_PATH_MTU | 12738a51866fSRoland Dreier IB_QP_DEST_QPN | 12748a51866fSRoland Dreier IB_QP_RQ_PSN | 12758a51866fSRoland Dreier IB_QP_MAX_DEST_RD_ATOMIC | 12768a51866fSRoland Dreier IB_QP_MIN_RNR_TIMER), 1277b42b63cfSSean Hefty [IB_QPT_XRC_INI] = (IB_QP_AV | 1278b42b63cfSSean Hefty IB_QP_PATH_MTU | 1279b42b63cfSSean Hefty IB_QP_DEST_QPN | 1280b42b63cfSSean Hefty IB_QP_RQ_PSN), 1281b42b63cfSSean Hefty [IB_QPT_XRC_TGT] = (IB_QP_AV | 1282b42b63cfSSean Hefty IB_QP_PATH_MTU | 1283b42b63cfSSean Hefty IB_QP_DEST_QPN | 1284b42b63cfSSean Hefty IB_QP_RQ_PSN | 1285b42b63cfSSean Hefty IB_QP_MAX_DEST_RD_ATOMIC | 1286b42b63cfSSean Hefty IB_QP_MIN_RNR_TIMER), 12878a51866fSRoland Dreier }, 12888a51866fSRoland Dreier .opt_param = { 12898a51866fSRoland Dreier [IB_QPT_UD] = (IB_QP_PKEY_INDEX | 12908a51866fSRoland Dreier IB_QP_QKEY), 12918a51866fSRoland Dreier [IB_QPT_UC] = (IB_QP_ALT_PATH | 12928a51866fSRoland Dreier IB_QP_ACCESS_FLAGS | 12938a51866fSRoland Dreier IB_QP_PKEY_INDEX), 12948a51866fSRoland Dreier [IB_QPT_RC] = (IB_QP_ALT_PATH | 12958a51866fSRoland Dreier IB_QP_ACCESS_FLAGS | 12968a51866fSRoland Dreier IB_QP_PKEY_INDEX), 1297b42b63cfSSean Hefty [IB_QPT_XRC_INI] = (IB_QP_ALT_PATH | 1298b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS | 1299b42b63cfSSean Hefty IB_QP_PKEY_INDEX), 1300b42b63cfSSean Hefty [IB_QPT_XRC_TGT] = (IB_QP_ALT_PATH | 1301b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS | 1302b42b63cfSSean Hefty IB_QP_PKEY_INDEX), 13038a51866fSRoland Dreier [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | 13048a51866fSRoland Dreier IB_QP_QKEY), 13058a51866fSRoland Dreier [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | 13068a51866fSRoland Dreier IB_QP_QKEY), 1307dd5f03beSMatan Barak }, 1308dbf727deSMatan Barak }, 13098a51866fSRoland Dreier }, 13108a51866fSRoland Dreier [IB_QPS_RTR] = { 13118a51866fSRoland Dreier [IB_QPS_RESET] = { .valid = 1 }, 13128a51866fSRoland Dreier [IB_QPS_ERR] = { .valid = 1 }, 13138a51866fSRoland Dreier [IB_QPS_RTS] = { 13148a51866fSRoland Dreier .valid = 1, 13158a51866fSRoland Dreier .req_param = { 13168a51866fSRoland Dreier [IB_QPT_UD] = IB_QP_SQ_PSN, 13178a51866fSRoland Dreier [IB_QPT_UC] = IB_QP_SQ_PSN, 13188a51866fSRoland Dreier [IB_QPT_RC] = (IB_QP_TIMEOUT | 13198a51866fSRoland Dreier IB_QP_RETRY_CNT | 13208a51866fSRoland Dreier IB_QP_RNR_RETRY | 13218a51866fSRoland Dreier IB_QP_SQ_PSN | 13228a51866fSRoland Dreier IB_QP_MAX_QP_RD_ATOMIC), 1323b42b63cfSSean Hefty [IB_QPT_XRC_INI] = (IB_QP_TIMEOUT | 1324b42b63cfSSean Hefty IB_QP_RETRY_CNT | 1325b42b63cfSSean Hefty IB_QP_RNR_RETRY | 1326b42b63cfSSean Hefty IB_QP_SQ_PSN | 1327b42b63cfSSean Hefty IB_QP_MAX_QP_RD_ATOMIC), 1328b42b63cfSSean Hefty [IB_QPT_XRC_TGT] = (IB_QP_TIMEOUT | 1329b42b63cfSSean Hefty IB_QP_SQ_PSN), 13308a51866fSRoland Dreier [IB_QPT_SMI] = IB_QP_SQ_PSN, 13318a51866fSRoland Dreier [IB_QPT_GSI] = IB_QP_SQ_PSN, 13328a51866fSRoland Dreier }, 13338a51866fSRoland Dreier .opt_param = { 13348a51866fSRoland Dreier [IB_QPT_UD] = (IB_QP_CUR_STATE | 13358a51866fSRoland Dreier IB_QP_QKEY), 13368a51866fSRoland Dreier [IB_QPT_UC] = (IB_QP_CUR_STATE | 13378a51866fSRoland Dreier IB_QP_ALT_PATH | 13388a51866fSRoland Dreier IB_QP_ACCESS_FLAGS | 13398a51866fSRoland Dreier IB_QP_PATH_MIG_STATE), 13408a51866fSRoland Dreier [IB_QPT_RC] = (IB_QP_CUR_STATE | 13418a51866fSRoland Dreier IB_QP_ALT_PATH | 13428a51866fSRoland Dreier IB_QP_ACCESS_FLAGS | 13438a51866fSRoland Dreier IB_QP_MIN_RNR_TIMER | 13448a51866fSRoland Dreier IB_QP_PATH_MIG_STATE), 1345b42b63cfSSean Hefty [IB_QPT_XRC_INI] = (IB_QP_CUR_STATE | 1346b42b63cfSSean Hefty IB_QP_ALT_PATH | 1347b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS | 1348b42b63cfSSean Hefty IB_QP_PATH_MIG_STATE), 1349b42b63cfSSean Hefty [IB_QPT_XRC_TGT] = (IB_QP_CUR_STATE | 1350b42b63cfSSean Hefty IB_QP_ALT_PATH | 1351b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS | 1352b42b63cfSSean Hefty IB_QP_MIN_RNR_TIMER | 1353b42b63cfSSean Hefty IB_QP_PATH_MIG_STATE), 13548a51866fSRoland Dreier [IB_QPT_SMI] = (IB_QP_CUR_STATE | 13558a51866fSRoland Dreier IB_QP_QKEY), 13568a51866fSRoland Dreier [IB_QPT_GSI] = (IB_QP_CUR_STATE | 13578a51866fSRoland Dreier IB_QP_QKEY), 1358528e5a1bSBodong Wang [IB_QPT_RAW_PACKET] = IB_QP_RATE_LIMIT, 13598a51866fSRoland Dreier } 13608a51866fSRoland Dreier } 13618a51866fSRoland Dreier }, 13628a51866fSRoland Dreier [IB_QPS_RTS] = { 13638a51866fSRoland Dreier [IB_QPS_RESET] = { .valid = 1 }, 13648a51866fSRoland Dreier [IB_QPS_ERR] = { .valid = 1 }, 13658a51866fSRoland Dreier [IB_QPS_RTS] = { 13668a51866fSRoland Dreier .valid = 1, 13678a51866fSRoland Dreier .opt_param = { 13688a51866fSRoland Dreier [IB_QPT_UD] = (IB_QP_CUR_STATE | 13698a51866fSRoland Dreier IB_QP_QKEY), 13704546d31dSDotan Barak [IB_QPT_UC] = (IB_QP_CUR_STATE | 13714546d31dSDotan Barak IB_QP_ACCESS_FLAGS | 13728a51866fSRoland Dreier IB_QP_ALT_PATH | 13738a51866fSRoland Dreier IB_QP_PATH_MIG_STATE), 13744546d31dSDotan Barak [IB_QPT_RC] = (IB_QP_CUR_STATE | 13754546d31dSDotan Barak IB_QP_ACCESS_FLAGS | 13768a51866fSRoland Dreier IB_QP_ALT_PATH | 13778a51866fSRoland Dreier IB_QP_PATH_MIG_STATE | 13788a51866fSRoland Dreier IB_QP_MIN_RNR_TIMER), 1379b42b63cfSSean Hefty [IB_QPT_XRC_INI] = (IB_QP_CUR_STATE | 1380b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS | 1381b42b63cfSSean Hefty IB_QP_ALT_PATH | 1382b42b63cfSSean Hefty IB_QP_PATH_MIG_STATE), 1383b42b63cfSSean Hefty [IB_QPT_XRC_TGT] = (IB_QP_CUR_STATE | 1384b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS | 1385b42b63cfSSean Hefty IB_QP_ALT_PATH | 1386b42b63cfSSean Hefty IB_QP_PATH_MIG_STATE | 1387b42b63cfSSean Hefty IB_QP_MIN_RNR_TIMER), 13888a51866fSRoland Dreier [IB_QPT_SMI] = (IB_QP_CUR_STATE | 13898a51866fSRoland Dreier IB_QP_QKEY), 13908a51866fSRoland Dreier [IB_QPT_GSI] = (IB_QP_CUR_STATE | 13918a51866fSRoland Dreier IB_QP_QKEY), 1392528e5a1bSBodong Wang [IB_QPT_RAW_PACKET] = IB_QP_RATE_LIMIT, 13938a51866fSRoland Dreier } 13948a51866fSRoland Dreier }, 13958a51866fSRoland Dreier [IB_QPS_SQD] = { 13968a51866fSRoland Dreier .valid = 1, 13978a51866fSRoland Dreier .opt_param = { 13988a51866fSRoland Dreier [IB_QPT_UD] = IB_QP_EN_SQD_ASYNC_NOTIFY, 13998a51866fSRoland Dreier [IB_QPT_UC] = IB_QP_EN_SQD_ASYNC_NOTIFY, 14008a51866fSRoland Dreier [IB_QPT_RC] = IB_QP_EN_SQD_ASYNC_NOTIFY, 1401b42b63cfSSean Hefty [IB_QPT_XRC_INI] = IB_QP_EN_SQD_ASYNC_NOTIFY, 1402b42b63cfSSean Hefty [IB_QPT_XRC_TGT] = IB_QP_EN_SQD_ASYNC_NOTIFY, /* ??? */ 14038a51866fSRoland Dreier [IB_QPT_SMI] = IB_QP_EN_SQD_ASYNC_NOTIFY, 14048a51866fSRoland Dreier [IB_QPT_GSI] = IB_QP_EN_SQD_ASYNC_NOTIFY 14058a51866fSRoland Dreier } 14068a51866fSRoland Dreier }, 14078a51866fSRoland Dreier }, 14088a51866fSRoland Dreier [IB_QPS_SQD] = { 14098a51866fSRoland Dreier [IB_QPS_RESET] = { .valid = 1 }, 14108a51866fSRoland Dreier [IB_QPS_ERR] = { .valid = 1 }, 14118a51866fSRoland Dreier [IB_QPS_RTS] = { 14128a51866fSRoland Dreier .valid = 1, 14138a51866fSRoland Dreier .opt_param = { 14148a51866fSRoland Dreier [IB_QPT_UD] = (IB_QP_CUR_STATE | 14158a51866fSRoland Dreier IB_QP_QKEY), 14168a51866fSRoland Dreier [IB_QPT_UC] = (IB_QP_CUR_STATE | 14178a51866fSRoland Dreier IB_QP_ALT_PATH | 14188a51866fSRoland Dreier IB_QP_ACCESS_FLAGS | 14198a51866fSRoland Dreier IB_QP_PATH_MIG_STATE), 14208a51866fSRoland Dreier [IB_QPT_RC] = (IB_QP_CUR_STATE | 14218a51866fSRoland Dreier IB_QP_ALT_PATH | 14228a51866fSRoland Dreier IB_QP_ACCESS_FLAGS | 14238a51866fSRoland Dreier IB_QP_MIN_RNR_TIMER | 14248a51866fSRoland Dreier IB_QP_PATH_MIG_STATE), 1425b42b63cfSSean Hefty [IB_QPT_XRC_INI] = (IB_QP_CUR_STATE | 1426b42b63cfSSean Hefty IB_QP_ALT_PATH | 1427b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS | 1428b42b63cfSSean Hefty IB_QP_PATH_MIG_STATE), 1429b42b63cfSSean Hefty [IB_QPT_XRC_TGT] = (IB_QP_CUR_STATE | 1430b42b63cfSSean Hefty IB_QP_ALT_PATH | 1431b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS | 1432b42b63cfSSean Hefty IB_QP_MIN_RNR_TIMER | 1433b42b63cfSSean Hefty IB_QP_PATH_MIG_STATE), 14348a51866fSRoland Dreier [IB_QPT_SMI] = (IB_QP_CUR_STATE | 14358a51866fSRoland Dreier IB_QP_QKEY), 14368a51866fSRoland Dreier [IB_QPT_GSI] = (IB_QP_CUR_STATE | 14378a51866fSRoland Dreier IB_QP_QKEY), 14388a51866fSRoland Dreier } 14398a51866fSRoland Dreier }, 14408a51866fSRoland Dreier [IB_QPS_SQD] = { 14418a51866fSRoland Dreier .valid = 1, 14428a51866fSRoland Dreier .opt_param = { 14438a51866fSRoland Dreier [IB_QPT_UD] = (IB_QP_PKEY_INDEX | 14448a51866fSRoland Dreier IB_QP_QKEY), 14458a51866fSRoland Dreier [IB_QPT_UC] = (IB_QP_AV | 14468a51866fSRoland Dreier IB_QP_ALT_PATH | 14478a51866fSRoland Dreier IB_QP_ACCESS_FLAGS | 14488a51866fSRoland Dreier IB_QP_PKEY_INDEX | 14498a51866fSRoland Dreier IB_QP_PATH_MIG_STATE), 14508a51866fSRoland Dreier [IB_QPT_RC] = (IB_QP_PORT | 14518a51866fSRoland Dreier IB_QP_AV | 14528a51866fSRoland Dreier IB_QP_TIMEOUT | 14538a51866fSRoland Dreier IB_QP_RETRY_CNT | 14548a51866fSRoland Dreier IB_QP_RNR_RETRY | 14558a51866fSRoland Dreier IB_QP_MAX_QP_RD_ATOMIC | 14568a51866fSRoland Dreier IB_QP_MAX_DEST_RD_ATOMIC | 14578a51866fSRoland Dreier IB_QP_ALT_PATH | 14588a51866fSRoland Dreier IB_QP_ACCESS_FLAGS | 14598a51866fSRoland Dreier IB_QP_PKEY_INDEX | 14608a51866fSRoland Dreier IB_QP_MIN_RNR_TIMER | 14618a51866fSRoland Dreier IB_QP_PATH_MIG_STATE), 1462b42b63cfSSean Hefty [IB_QPT_XRC_INI] = (IB_QP_PORT | 1463b42b63cfSSean Hefty IB_QP_AV | 1464b42b63cfSSean Hefty IB_QP_TIMEOUT | 1465b42b63cfSSean Hefty IB_QP_RETRY_CNT | 1466b42b63cfSSean Hefty IB_QP_RNR_RETRY | 1467b42b63cfSSean Hefty IB_QP_MAX_QP_RD_ATOMIC | 1468b42b63cfSSean Hefty IB_QP_ALT_PATH | 1469b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS | 1470b42b63cfSSean Hefty IB_QP_PKEY_INDEX | 1471b42b63cfSSean Hefty IB_QP_PATH_MIG_STATE), 1472b42b63cfSSean Hefty [IB_QPT_XRC_TGT] = (IB_QP_PORT | 1473b42b63cfSSean Hefty IB_QP_AV | 1474b42b63cfSSean Hefty IB_QP_TIMEOUT | 1475b42b63cfSSean Hefty IB_QP_MAX_DEST_RD_ATOMIC | 1476b42b63cfSSean Hefty IB_QP_ALT_PATH | 1477b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS | 1478b42b63cfSSean Hefty IB_QP_PKEY_INDEX | 1479b42b63cfSSean Hefty IB_QP_MIN_RNR_TIMER | 1480b42b63cfSSean Hefty IB_QP_PATH_MIG_STATE), 14818a51866fSRoland Dreier [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | 14828a51866fSRoland Dreier IB_QP_QKEY), 14838a51866fSRoland Dreier [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | 14848a51866fSRoland Dreier IB_QP_QKEY), 14858a51866fSRoland Dreier } 14868a51866fSRoland Dreier } 14878a51866fSRoland Dreier }, 14888a51866fSRoland Dreier [IB_QPS_SQE] = { 14898a51866fSRoland Dreier [IB_QPS_RESET] = { .valid = 1 }, 14908a51866fSRoland Dreier [IB_QPS_ERR] = { .valid = 1 }, 14918a51866fSRoland Dreier [IB_QPS_RTS] = { 14928a51866fSRoland Dreier .valid = 1, 14938a51866fSRoland Dreier .opt_param = { 14948a51866fSRoland Dreier [IB_QPT_UD] = (IB_QP_CUR_STATE | 14958a51866fSRoland Dreier IB_QP_QKEY), 14968a51866fSRoland Dreier [IB_QPT_UC] = (IB_QP_CUR_STATE | 14978a51866fSRoland Dreier IB_QP_ACCESS_FLAGS), 14988a51866fSRoland Dreier [IB_QPT_SMI] = (IB_QP_CUR_STATE | 14998a51866fSRoland Dreier IB_QP_QKEY), 15008a51866fSRoland Dreier [IB_QPT_GSI] = (IB_QP_CUR_STATE | 15018a51866fSRoland Dreier IB_QP_QKEY), 15028a51866fSRoland Dreier } 15038a51866fSRoland Dreier } 15048a51866fSRoland Dreier }, 15058a51866fSRoland Dreier [IB_QPS_ERR] = { 15068a51866fSRoland Dreier [IB_QPS_RESET] = { .valid = 1 }, 15078a51866fSRoland Dreier [IB_QPS_ERR] = { .valid = 1 } 15088a51866fSRoland Dreier } 15098a51866fSRoland Dreier }; 15108a51866fSRoland Dreier 151119b1f540SLeon Romanovsky bool ib_modify_qp_is_ok(enum ib_qp_state cur_state, enum ib_qp_state next_state, 1512dd5f03beSMatan Barak enum ib_qp_type type, enum ib_qp_attr_mask mask, 1513dd5f03beSMatan Barak enum rdma_link_layer ll) 15148a51866fSRoland Dreier { 15158a51866fSRoland Dreier enum ib_qp_attr_mask req_param, opt_param; 15168a51866fSRoland Dreier 15178a51866fSRoland Dreier if (mask & IB_QP_CUR_STATE && 15188a51866fSRoland Dreier cur_state != IB_QPS_RTR && cur_state != IB_QPS_RTS && 15198a51866fSRoland Dreier cur_state != IB_QPS_SQD && cur_state != IB_QPS_SQE) 152019b1f540SLeon Romanovsky return false; 15218a51866fSRoland Dreier 15228a51866fSRoland Dreier if (!qp_state_table[cur_state][next_state].valid) 152319b1f540SLeon Romanovsky return false; 15248a51866fSRoland Dreier 15258a51866fSRoland Dreier req_param = qp_state_table[cur_state][next_state].req_param[type]; 15268a51866fSRoland Dreier opt_param = qp_state_table[cur_state][next_state].opt_param[type]; 15278a51866fSRoland Dreier 15288a51866fSRoland Dreier if ((mask & req_param) != req_param) 152919b1f540SLeon Romanovsky return false; 15308a51866fSRoland Dreier 15318a51866fSRoland Dreier if (mask & ~(req_param | opt_param | IB_QP_STATE)) 153219b1f540SLeon Romanovsky return false; 15338a51866fSRoland Dreier 153419b1f540SLeon Romanovsky return true; 15358a51866fSRoland Dreier } 15368a51866fSRoland Dreier EXPORT_SYMBOL(ib_modify_qp_is_ok); 15378a51866fSRoland Dreier 1538947c99ecSParav Pandit /** 1539947c99ecSParav Pandit * ib_resolve_eth_dmac - Resolve destination mac address 1540947c99ecSParav Pandit * @device: Device to consider 1541947c99ecSParav Pandit * @ah_attr: address handle attribute which describes the 1542947c99ecSParav Pandit * source and destination parameters 1543947c99ecSParav Pandit * ib_resolve_eth_dmac() resolves destination mac address and L3 hop limit It 1544947c99ecSParav Pandit * returns 0 on success or appropriate error code. It initializes the 1545947c99ecSParav Pandit * necessary ah_attr fields when call is successful. 1546947c99ecSParav Pandit */ 1547c0348eb0SParav Pandit static int ib_resolve_eth_dmac(struct ib_device *device, 154890898850SDasaratharaman Chandramouli struct rdma_ah_attr *ah_attr) 1549ed4c54e5SOr Gerlitz { 1550ed4c54e5SOr Gerlitz int ret = 0; 1551d8966fcdSDasaratharaman Chandramouli 15529636a56fSNoa Osherovich if (rdma_is_multicast_addr((struct in6_addr *)ah_attr->grh.dgid.raw)) { 15539636a56fSNoa Osherovich if (ipv6_addr_v4mapped((struct in6_addr *)ah_attr->grh.dgid.raw)) { 15549636a56fSNoa Osherovich __be32 addr = 0; 15559636a56fSNoa Osherovich 15569636a56fSNoa Osherovich memcpy(&addr, ah_attr->grh.dgid.raw + 12, 4); 15579636a56fSNoa Osherovich ip_eth_mc_map(addr, (char *)ah_attr->roce.dmac); 15589636a56fSNoa Osherovich } else { 15599636a56fSNoa Osherovich ipv6_eth_mc_map((struct in6_addr *)ah_attr->grh.dgid.raw, 15609636a56fSNoa Osherovich (char *)ah_attr->roce.dmac); 15619636a56fSNoa Osherovich } 1562ed4c54e5SOr Gerlitz } else { 15631060f865SParav Pandit ret = ib_resolve_unicast_gid_dmac(device, ah_attr); 1564ed4c54e5SOr Gerlitz } 1565ed4c54e5SOr Gerlitz return ret; 1566ed4c54e5SOr Gerlitz } 1567ed4c54e5SOr Gerlitz 15688d9ec9adSJason Gunthorpe static bool is_qp_type_connected(const struct ib_qp *qp) 15698d9ec9adSJason Gunthorpe { 15708d9ec9adSJason Gunthorpe return (qp->qp_type == IB_QPT_UC || 15718d9ec9adSJason Gunthorpe qp->qp_type == IB_QPT_RC || 15728d9ec9adSJason Gunthorpe qp->qp_type == IB_QPT_XRC_INI || 15738d9ec9adSJason Gunthorpe qp->qp_type == IB_QPT_XRC_TGT); 15748d9ec9adSJason Gunthorpe } 15758d9ec9adSJason Gunthorpe 1576a512c2fbSParav Pandit /** 1577b96ac05aSParav Pandit * IB core internal function to perform QP attributes modification. 1578a512c2fbSParav Pandit */ 1579b96ac05aSParav Pandit static int _ib_modify_qp(struct ib_qp *qp, struct ib_qp_attr *attr, 1580a512c2fbSParav Pandit int attr_mask, struct ib_udata *udata) 1581a512c2fbSParav Pandit { 1582727b7e9aSMajd Dibbiny u8 port = attr_mask & IB_QP_PORT ? attr->port_num : qp->port; 15838d9ec9adSJason Gunthorpe const struct ib_gid_attr *old_sgid_attr_av; 15848d9ec9adSJason Gunthorpe const struct ib_gid_attr *old_sgid_attr_alt_av; 1585a512c2fbSParav Pandit int ret; 1586a512c2fbSParav Pandit 15878d9ec9adSJason Gunthorpe if (attr_mask & IB_QP_AV) { 15888d9ec9adSJason Gunthorpe ret = rdma_fill_sgid_attr(qp->device, &attr->ah_attr, 15898d9ec9adSJason Gunthorpe &old_sgid_attr_av); 15908d9ec9adSJason Gunthorpe if (ret) 15918d9ec9adSJason Gunthorpe return ret; 15928d9ec9adSJason Gunthorpe } 15938d9ec9adSJason Gunthorpe if (attr_mask & IB_QP_ALT_PATH) { 15941a1f460fSJason Gunthorpe /* 15951a1f460fSJason Gunthorpe * FIXME: This does not track the migration state, so if the 15961a1f460fSJason Gunthorpe * user loads a new alternate path after the HW has migrated 15971a1f460fSJason Gunthorpe * from primary->alternate we will keep the wrong 15981a1f460fSJason Gunthorpe * references. This is OK for IB because the reference 15991a1f460fSJason Gunthorpe * counting does not serve any functional purpose. 16001a1f460fSJason Gunthorpe */ 16018d9ec9adSJason Gunthorpe ret = rdma_fill_sgid_attr(qp->device, &attr->alt_ah_attr, 16028d9ec9adSJason Gunthorpe &old_sgid_attr_alt_av); 16038d9ec9adSJason Gunthorpe if (ret) 16048d9ec9adSJason Gunthorpe goto out_av; 16057a5c938bSJason Gunthorpe 16067a5c938bSJason Gunthorpe /* 16077a5c938bSJason Gunthorpe * Today the core code can only handle alternate paths and APM 16087a5c938bSJason Gunthorpe * for IB. Ban them in roce mode. 16097a5c938bSJason Gunthorpe */ 16107a5c938bSJason Gunthorpe if (!(rdma_protocol_ib(qp->device, 16117a5c938bSJason Gunthorpe attr->alt_ah_attr.port_num) && 16127a5c938bSJason Gunthorpe rdma_protocol_ib(qp->device, port))) { 16137a5c938bSJason Gunthorpe ret = EINVAL; 16147a5c938bSJason Gunthorpe goto out; 16157a5c938bSJason Gunthorpe } 16168d9ec9adSJason Gunthorpe } 16178d9ec9adSJason Gunthorpe 16188d9ec9adSJason Gunthorpe /* 16198d9ec9adSJason Gunthorpe * If the user provided the qp_attr then we have to resolve it. Kernel 16208d9ec9adSJason Gunthorpe * users have to provide already resolved rdma_ah_attr's 16218d9ec9adSJason Gunthorpe */ 16228d9ec9adSJason Gunthorpe if (udata && (attr_mask & IB_QP_AV) && 16238d9ec9adSJason Gunthorpe attr->ah_attr.type == RDMA_AH_ATTR_TYPE_ROCE && 16248d9ec9adSJason Gunthorpe is_qp_type_connected(qp)) { 16258d9ec9adSJason Gunthorpe ret = ib_resolve_eth_dmac(qp->device, &attr->ah_attr); 16268d9ec9adSJason Gunthorpe if (ret) 16278d9ec9adSJason Gunthorpe goto out; 16288d9ec9adSJason Gunthorpe } 16298d9ec9adSJason Gunthorpe 1630727b7e9aSMajd Dibbiny if (rdma_ib_or_roce(qp->device, port)) { 1631727b7e9aSMajd Dibbiny if (attr_mask & IB_QP_RQ_PSN && attr->rq_psn & ~0xffffff) { 1632727b7e9aSMajd Dibbiny pr_warn("%s: %s rq_psn overflow, masking to 24 bits\n", 1633727b7e9aSMajd Dibbiny __func__, qp->device->name); 1634727b7e9aSMajd Dibbiny attr->rq_psn &= 0xffffff; 1635727b7e9aSMajd Dibbiny } 1636727b7e9aSMajd Dibbiny 1637727b7e9aSMajd Dibbiny if (attr_mask & IB_QP_SQ_PSN && attr->sq_psn & ~0xffffff) { 1638727b7e9aSMajd Dibbiny pr_warn("%s: %s sq_psn overflow, masking to 24 bits\n", 1639727b7e9aSMajd Dibbiny __func__, qp->device->name); 1640727b7e9aSMajd Dibbiny attr->sq_psn &= 0xffffff; 1641727b7e9aSMajd Dibbiny } 1642727b7e9aSMajd Dibbiny } 1643727b7e9aSMajd Dibbiny 1644498ca3c8SNoa Osherovich ret = ib_security_modify_qp(qp, attr, attr_mask, udata); 16451a1f460fSJason Gunthorpe if (ret) 16461a1f460fSJason Gunthorpe goto out; 16471a1f460fSJason Gunthorpe 16481a1f460fSJason Gunthorpe if (attr_mask & IB_QP_PORT) 1649498ca3c8SNoa Osherovich qp->port = attr->port_num; 16501a1f460fSJason Gunthorpe if (attr_mask & IB_QP_AV) 16511a1f460fSJason Gunthorpe qp->av_sgid_attr = 16521a1f460fSJason Gunthorpe rdma_update_sgid_attr(&attr->ah_attr, qp->av_sgid_attr); 16531a1f460fSJason Gunthorpe if (attr_mask & IB_QP_ALT_PATH) 16541a1f460fSJason Gunthorpe qp->alt_path_sgid_attr = rdma_update_sgid_attr( 16551a1f460fSJason Gunthorpe &attr->alt_ah_attr, qp->alt_path_sgid_attr); 1656498ca3c8SNoa Osherovich 16578d9ec9adSJason Gunthorpe out: 16588d9ec9adSJason Gunthorpe if (attr_mask & IB_QP_ALT_PATH) 16598d9ec9adSJason Gunthorpe rdma_unfill_sgid_attr(&attr->alt_ah_attr, old_sgid_attr_alt_av); 16608d9ec9adSJason Gunthorpe out_av: 16618d9ec9adSJason Gunthorpe if (attr_mask & IB_QP_AV) 16628d9ec9adSJason Gunthorpe rdma_unfill_sgid_attr(&attr->ah_attr, old_sgid_attr_av); 1663498ca3c8SNoa Osherovich return ret; 1664a512c2fbSParav Pandit } 1665b96ac05aSParav Pandit 1666b96ac05aSParav Pandit /** 1667b96ac05aSParav Pandit * ib_modify_qp_with_udata - Modifies the attributes for the specified QP. 1668b96ac05aSParav Pandit * @ib_qp: The QP to modify. 1669b96ac05aSParav Pandit * @attr: On input, specifies the QP attributes to modify. On output, 1670b96ac05aSParav Pandit * the current values of selected QP attributes are returned. 1671b96ac05aSParav Pandit * @attr_mask: A bit-mask used to specify which attributes of the QP 1672b96ac05aSParav Pandit * are being modified. 1673b96ac05aSParav Pandit * @udata: pointer to user's input output buffer information 1674b96ac05aSParav Pandit * are being modified. 1675b96ac05aSParav Pandit * It returns 0 on success and returns appropriate error code on error. 1676b96ac05aSParav Pandit */ 1677b96ac05aSParav Pandit int ib_modify_qp_with_udata(struct ib_qp *ib_qp, struct ib_qp_attr *attr, 1678b96ac05aSParav Pandit int attr_mask, struct ib_udata *udata) 1679b96ac05aSParav Pandit { 16808d9ec9adSJason Gunthorpe return _ib_modify_qp(ib_qp->real_qp, attr, attr_mask, udata); 1681b96ac05aSParav Pandit } 1682a512c2fbSParav Pandit EXPORT_SYMBOL(ib_modify_qp_with_udata); 1683a512c2fbSParav Pandit 1684d4186194SYuval Shaia int ib_get_eth_speed(struct ib_device *dev, u8 port_num, u8 *speed, u8 *width) 1685d4186194SYuval Shaia { 1686d4186194SYuval Shaia int rc; 1687d4186194SYuval Shaia u32 netdev_speed; 1688d4186194SYuval Shaia struct net_device *netdev; 1689d4186194SYuval Shaia struct ethtool_link_ksettings lksettings; 1690d4186194SYuval Shaia 1691d4186194SYuval Shaia if (rdma_port_get_link_layer(dev, port_num) != IB_LINK_LAYER_ETHERNET) 1692d4186194SYuval Shaia return -EINVAL; 1693d4186194SYuval Shaia 1694d4186194SYuval Shaia if (!dev->get_netdev) 1695d4186194SYuval Shaia return -EOPNOTSUPP; 1696d4186194SYuval Shaia 1697d4186194SYuval Shaia netdev = dev->get_netdev(dev, port_num); 1698d4186194SYuval Shaia if (!netdev) 1699d4186194SYuval Shaia return -ENODEV; 1700d4186194SYuval Shaia 1701d4186194SYuval Shaia rtnl_lock(); 1702d4186194SYuval Shaia rc = __ethtool_get_link_ksettings(netdev, &lksettings); 1703d4186194SYuval Shaia rtnl_unlock(); 1704d4186194SYuval Shaia 1705d4186194SYuval Shaia dev_put(netdev); 1706d4186194SYuval Shaia 1707d4186194SYuval Shaia if (!rc) { 1708d4186194SYuval Shaia netdev_speed = lksettings.base.speed; 1709d4186194SYuval Shaia } else { 1710d4186194SYuval Shaia netdev_speed = SPEED_1000; 1711d4186194SYuval Shaia pr_warn("%s speed is unknown, defaulting to %d\n", netdev->name, 1712d4186194SYuval Shaia netdev_speed); 1713d4186194SYuval Shaia } 1714d4186194SYuval Shaia 1715d4186194SYuval Shaia if (netdev_speed <= SPEED_1000) { 1716d4186194SYuval Shaia *width = IB_WIDTH_1X; 1717d4186194SYuval Shaia *speed = IB_SPEED_SDR; 1718d4186194SYuval Shaia } else if (netdev_speed <= SPEED_10000) { 1719d4186194SYuval Shaia *width = IB_WIDTH_1X; 1720d4186194SYuval Shaia *speed = IB_SPEED_FDR10; 1721d4186194SYuval Shaia } else if (netdev_speed <= SPEED_20000) { 1722d4186194SYuval Shaia *width = IB_WIDTH_4X; 1723d4186194SYuval Shaia *speed = IB_SPEED_DDR; 1724d4186194SYuval Shaia } else if (netdev_speed <= SPEED_25000) { 1725d4186194SYuval Shaia *width = IB_WIDTH_1X; 1726d4186194SYuval Shaia *speed = IB_SPEED_EDR; 1727d4186194SYuval Shaia } else if (netdev_speed <= SPEED_40000) { 1728d4186194SYuval Shaia *width = IB_WIDTH_4X; 1729d4186194SYuval Shaia *speed = IB_SPEED_FDR10; 1730d4186194SYuval Shaia } else { 1731d4186194SYuval Shaia *width = IB_WIDTH_4X; 1732d4186194SYuval Shaia *speed = IB_SPEED_EDR; 1733d4186194SYuval Shaia } 1734d4186194SYuval Shaia 1735d4186194SYuval Shaia return 0; 1736d4186194SYuval Shaia } 1737d4186194SYuval Shaia EXPORT_SYMBOL(ib_get_eth_speed); 1738d4186194SYuval Shaia 17391da177e4SLinus Torvalds int ib_modify_qp(struct ib_qp *qp, 17401da177e4SLinus Torvalds struct ib_qp_attr *qp_attr, 17411da177e4SLinus Torvalds int qp_attr_mask) 17421da177e4SLinus Torvalds { 1743b96ac05aSParav Pandit return _ib_modify_qp(qp->real_qp, qp_attr, qp_attr_mask, NULL); 17441da177e4SLinus Torvalds } 17451da177e4SLinus Torvalds EXPORT_SYMBOL(ib_modify_qp); 17461da177e4SLinus Torvalds 17471da177e4SLinus Torvalds int ib_query_qp(struct ib_qp *qp, 17481da177e4SLinus Torvalds struct ib_qp_attr *qp_attr, 17491da177e4SLinus Torvalds int qp_attr_mask, 17501da177e4SLinus Torvalds struct ib_qp_init_attr *qp_init_attr) 17511da177e4SLinus Torvalds { 17528d9ec9adSJason Gunthorpe qp_attr->ah_attr.grh.sgid_attr = NULL; 17538d9ec9adSJason Gunthorpe qp_attr->alt_ah_attr.grh.sgid_attr = NULL; 17548d9ec9adSJason Gunthorpe 17551da177e4SLinus Torvalds return qp->device->query_qp ? 17560e0ec7e0SSean Hefty qp->device->query_qp(qp->real_qp, qp_attr, qp_attr_mask, qp_init_attr) : 175787915bf8SLeon Romanovsky -EOPNOTSUPP; 17581da177e4SLinus Torvalds } 17591da177e4SLinus Torvalds EXPORT_SYMBOL(ib_query_qp); 17601da177e4SLinus Torvalds 17610e0ec7e0SSean Hefty int ib_close_qp(struct ib_qp *qp) 17620e0ec7e0SSean Hefty { 17630e0ec7e0SSean Hefty struct ib_qp *real_qp; 17640e0ec7e0SSean Hefty unsigned long flags; 17650e0ec7e0SSean Hefty 17660e0ec7e0SSean Hefty real_qp = qp->real_qp; 17670e0ec7e0SSean Hefty if (real_qp == qp) 17680e0ec7e0SSean Hefty return -EINVAL; 17690e0ec7e0SSean Hefty 17700e0ec7e0SSean Hefty spin_lock_irqsave(&real_qp->device->event_handler_lock, flags); 17710e0ec7e0SSean Hefty list_del(&qp->open_list); 17720e0ec7e0SSean Hefty spin_unlock_irqrestore(&real_qp->device->event_handler_lock, flags); 17730e0ec7e0SSean Hefty 17740e0ec7e0SSean Hefty atomic_dec(&real_qp->usecnt); 17754a50881bSMoni Shoua if (qp->qp_sec) 1776d291f1a6SDaniel Jurgens ib_close_shared_qp_security(qp->qp_sec); 17770e0ec7e0SSean Hefty kfree(qp); 17780e0ec7e0SSean Hefty 17790e0ec7e0SSean Hefty return 0; 17800e0ec7e0SSean Hefty } 17810e0ec7e0SSean Hefty EXPORT_SYMBOL(ib_close_qp); 17820e0ec7e0SSean Hefty 17830e0ec7e0SSean Hefty static int __ib_destroy_shared_qp(struct ib_qp *qp) 17840e0ec7e0SSean Hefty { 17850e0ec7e0SSean Hefty struct ib_xrcd *xrcd; 17860e0ec7e0SSean Hefty struct ib_qp *real_qp; 17870e0ec7e0SSean Hefty int ret; 17880e0ec7e0SSean Hefty 17890e0ec7e0SSean Hefty real_qp = qp->real_qp; 17900e0ec7e0SSean Hefty xrcd = real_qp->xrcd; 17910e0ec7e0SSean Hefty 17920e0ec7e0SSean Hefty mutex_lock(&xrcd->tgt_qp_mutex); 17930e0ec7e0SSean Hefty ib_close_qp(qp); 17940e0ec7e0SSean Hefty if (atomic_read(&real_qp->usecnt) == 0) 17950e0ec7e0SSean Hefty list_del(&real_qp->xrcd_list); 17960e0ec7e0SSean Hefty else 17970e0ec7e0SSean Hefty real_qp = NULL; 17980e0ec7e0SSean Hefty mutex_unlock(&xrcd->tgt_qp_mutex); 17990e0ec7e0SSean Hefty 18000e0ec7e0SSean Hefty if (real_qp) { 18010e0ec7e0SSean Hefty ret = ib_destroy_qp(real_qp); 18020e0ec7e0SSean Hefty if (!ret) 18030e0ec7e0SSean Hefty atomic_dec(&xrcd->usecnt); 18040e0ec7e0SSean Hefty else 18050e0ec7e0SSean Hefty __ib_insert_xrcd_qp(xrcd, real_qp); 18060e0ec7e0SSean Hefty } 18070e0ec7e0SSean Hefty 18080e0ec7e0SSean Hefty return 0; 18090e0ec7e0SSean Hefty } 18100e0ec7e0SSean Hefty 18111da177e4SLinus Torvalds int ib_destroy_qp(struct ib_qp *qp) 18121da177e4SLinus Torvalds { 18131a1f460fSJason Gunthorpe const struct ib_gid_attr *alt_path_sgid_attr = qp->alt_path_sgid_attr; 18141a1f460fSJason Gunthorpe const struct ib_gid_attr *av_sgid_attr = qp->av_sgid_attr; 18151da177e4SLinus Torvalds struct ib_pd *pd; 18161da177e4SLinus Torvalds struct ib_cq *scq, *rcq; 18171da177e4SLinus Torvalds struct ib_srq *srq; 1818a9017e23SYishai Hadas struct ib_rwq_ind_table *ind_tbl; 1819d291f1a6SDaniel Jurgens struct ib_qp_security *sec; 18201da177e4SLinus Torvalds int ret; 18211da177e4SLinus Torvalds 1822fffb0383SChristoph Hellwig WARN_ON_ONCE(qp->mrs_used > 0); 1823fffb0383SChristoph Hellwig 18240e0ec7e0SSean Hefty if (atomic_read(&qp->usecnt)) 18250e0ec7e0SSean Hefty return -EBUSY; 18260e0ec7e0SSean Hefty 18270e0ec7e0SSean Hefty if (qp->real_qp != qp) 18280e0ec7e0SSean Hefty return __ib_destroy_shared_qp(qp); 18290e0ec7e0SSean Hefty 18301da177e4SLinus Torvalds pd = qp->pd; 18311da177e4SLinus Torvalds scq = qp->send_cq; 18321da177e4SLinus Torvalds rcq = qp->recv_cq; 18331da177e4SLinus Torvalds srq = qp->srq; 1834a9017e23SYishai Hadas ind_tbl = qp->rwq_ind_tbl; 1835d291f1a6SDaniel Jurgens sec = qp->qp_sec; 1836d291f1a6SDaniel Jurgens if (sec) 1837d291f1a6SDaniel Jurgens ib_destroy_qp_security_begin(sec); 18381da177e4SLinus Torvalds 1839a060b562SChristoph Hellwig if (!qp->uobject) 1840a060b562SChristoph Hellwig rdma_rw_cleanup_mrs(qp); 1841a060b562SChristoph Hellwig 184278a0cd64SLeon Romanovsky rdma_restrack_del(&qp->res); 18431da177e4SLinus Torvalds ret = qp->device->destroy_qp(qp); 18441da177e4SLinus Torvalds if (!ret) { 18451a1f460fSJason Gunthorpe if (alt_path_sgid_attr) 18461a1f460fSJason Gunthorpe rdma_put_gid_attr(alt_path_sgid_attr); 18471a1f460fSJason Gunthorpe if (av_sgid_attr) 18481a1f460fSJason Gunthorpe rdma_put_gid_attr(av_sgid_attr); 1849b42b63cfSSean Hefty if (pd) 18501da177e4SLinus Torvalds atomic_dec(&pd->usecnt); 1851b42b63cfSSean Hefty if (scq) 18521da177e4SLinus Torvalds atomic_dec(&scq->usecnt); 1853b42b63cfSSean Hefty if (rcq) 18541da177e4SLinus Torvalds atomic_dec(&rcq->usecnt); 18551da177e4SLinus Torvalds if (srq) 18561da177e4SLinus Torvalds atomic_dec(&srq->usecnt); 1857a9017e23SYishai Hadas if (ind_tbl) 1858a9017e23SYishai Hadas atomic_dec(&ind_tbl->usecnt); 1859d291f1a6SDaniel Jurgens if (sec) 1860d291f1a6SDaniel Jurgens ib_destroy_qp_security_end(sec); 1861d291f1a6SDaniel Jurgens } else { 1862d291f1a6SDaniel Jurgens if (sec) 1863d291f1a6SDaniel Jurgens ib_destroy_qp_security_abort(sec); 18641da177e4SLinus Torvalds } 18651da177e4SLinus Torvalds 18661da177e4SLinus Torvalds return ret; 18671da177e4SLinus Torvalds } 18681da177e4SLinus Torvalds EXPORT_SYMBOL(ib_destroy_qp); 18691da177e4SLinus Torvalds 18701da177e4SLinus Torvalds /* Completion queues */ 18711da177e4SLinus Torvalds 18727350cdd0SBharat Potnuri struct ib_cq *__ib_create_cq(struct ib_device *device, 18731da177e4SLinus Torvalds ib_comp_handler comp_handler, 18741da177e4SLinus Torvalds void (*event_handler)(struct ib_event *, void *), 18758e37210bSMatan Barak void *cq_context, 18767350cdd0SBharat Potnuri const struct ib_cq_init_attr *cq_attr, 18777350cdd0SBharat Potnuri const char *caller) 18781da177e4SLinus Torvalds { 18791da177e4SLinus Torvalds struct ib_cq *cq; 18801da177e4SLinus Torvalds 18818e37210bSMatan Barak cq = device->create_cq(device, cq_attr, NULL, NULL); 18821da177e4SLinus Torvalds 18831da177e4SLinus Torvalds if (!IS_ERR(cq)) { 18841da177e4SLinus Torvalds cq->device = device; 1885b5e81bf5SRoland Dreier cq->uobject = NULL; 18861da177e4SLinus Torvalds cq->comp_handler = comp_handler; 18871da177e4SLinus Torvalds cq->event_handler = event_handler; 18881da177e4SLinus Torvalds cq->cq_context = cq_context; 18891da177e4SLinus Torvalds atomic_set(&cq->usecnt, 0); 189008f294a1SLeon Romanovsky cq->res.type = RDMA_RESTRACK_CQ; 18917350cdd0SBharat Potnuri cq->res.kern_name = caller; 189208f294a1SLeon Romanovsky rdma_restrack_add(&cq->res); 18931da177e4SLinus Torvalds } 18941da177e4SLinus Torvalds 18951da177e4SLinus Torvalds return cq; 18961da177e4SLinus Torvalds } 18977350cdd0SBharat Potnuri EXPORT_SYMBOL(__ib_create_cq); 18981da177e4SLinus Torvalds 18994190b4e9SLeon Romanovsky int rdma_set_cq_moderation(struct ib_cq *cq, u16 cq_count, u16 cq_period) 19002dd57162SEli Cohen { 19012dd57162SEli Cohen return cq->device->modify_cq ? 190287915bf8SLeon Romanovsky cq->device->modify_cq(cq, cq_count, cq_period) : -EOPNOTSUPP; 19032dd57162SEli Cohen } 19044190b4e9SLeon Romanovsky EXPORT_SYMBOL(rdma_set_cq_moderation); 19052dd57162SEli Cohen 19061da177e4SLinus Torvalds int ib_destroy_cq(struct ib_cq *cq) 19071da177e4SLinus Torvalds { 19081da177e4SLinus Torvalds if (atomic_read(&cq->usecnt)) 19091da177e4SLinus Torvalds return -EBUSY; 19101da177e4SLinus Torvalds 191108f294a1SLeon Romanovsky rdma_restrack_del(&cq->res); 19121da177e4SLinus Torvalds return cq->device->destroy_cq(cq); 19131da177e4SLinus Torvalds } 19141da177e4SLinus Torvalds EXPORT_SYMBOL(ib_destroy_cq); 19151da177e4SLinus Torvalds 1916a74cd4afSRoland Dreier int ib_resize_cq(struct ib_cq *cq, int cqe) 19171da177e4SLinus Torvalds { 191840de2e54SRoland Dreier return cq->device->resize_cq ? 191987915bf8SLeon Romanovsky cq->device->resize_cq(cq, cqe, NULL) : -EOPNOTSUPP; 19201da177e4SLinus Torvalds } 19211da177e4SLinus Torvalds EXPORT_SYMBOL(ib_resize_cq); 19221da177e4SLinus Torvalds 19231da177e4SLinus Torvalds /* Memory regions */ 19241da177e4SLinus Torvalds 19251da177e4SLinus Torvalds int ib_dereg_mr(struct ib_mr *mr) 19261da177e4SLinus Torvalds { 1927ab67ed8dSChristoph Hellwig struct ib_pd *pd = mr->pd; 1928be934ccaSAriel Levkovich struct ib_dm *dm = mr->dm; 19291da177e4SLinus Torvalds int ret; 19301da177e4SLinus Torvalds 1931fccec5b8SSteve Wise rdma_restrack_del(&mr->res); 19321da177e4SLinus Torvalds ret = mr->device->dereg_mr(mr); 1933be934ccaSAriel Levkovich if (!ret) { 19341da177e4SLinus Torvalds atomic_dec(&pd->usecnt); 1935be934ccaSAriel Levkovich if (dm) 1936be934ccaSAriel Levkovich atomic_dec(&dm->usecnt); 1937be934ccaSAriel Levkovich } 19381da177e4SLinus Torvalds 19391da177e4SLinus Torvalds return ret; 19401da177e4SLinus Torvalds } 19411da177e4SLinus Torvalds EXPORT_SYMBOL(ib_dereg_mr); 19421da177e4SLinus Torvalds 19439bee178bSSagi Grimberg /** 19449bee178bSSagi Grimberg * ib_alloc_mr() - Allocates a memory region 19459bee178bSSagi Grimberg * @pd: protection domain associated with the region 19469bee178bSSagi Grimberg * @mr_type: memory region type 19479bee178bSSagi Grimberg * @max_num_sg: maximum sg entries available for registration. 19489bee178bSSagi Grimberg * 19499bee178bSSagi Grimberg * Notes: 19509bee178bSSagi Grimberg * Memory registeration page/sg lists must not exceed max_num_sg. 19519bee178bSSagi Grimberg * For mr_type IB_MR_TYPE_MEM_REG, the total length cannot exceed 19529bee178bSSagi Grimberg * max_num_sg * used_page_size. 19539bee178bSSagi Grimberg * 19549bee178bSSagi Grimberg */ 19559bee178bSSagi Grimberg struct ib_mr *ib_alloc_mr(struct ib_pd *pd, 19569bee178bSSagi Grimberg enum ib_mr_type mr_type, 19579bee178bSSagi Grimberg u32 max_num_sg) 195817cd3a2dSSagi Grimberg { 195917cd3a2dSSagi Grimberg struct ib_mr *mr; 196017cd3a2dSSagi Grimberg 1961d9f272c5SSagi Grimberg if (!pd->device->alloc_mr) 196287915bf8SLeon Romanovsky return ERR_PTR(-EOPNOTSUPP); 196317cd3a2dSSagi Grimberg 1964d9f272c5SSagi Grimberg mr = pd->device->alloc_mr(pd, mr_type, max_num_sg); 196517cd3a2dSSagi Grimberg if (!IS_ERR(mr)) { 196617cd3a2dSSagi Grimberg mr->device = pd->device; 196717cd3a2dSSagi Grimberg mr->pd = pd; 196854e7e48bSAriel Levkovich mr->dm = NULL; 196917cd3a2dSSagi Grimberg mr->uobject = NULL; 197017cd3a2dSSagi Grimberg atomic_inc(&pd->usecnt); 1971d4a85c30SSteve Wise mr->need_inval = false; 1972fccec5b8SSteve Wise mr->res.type = RDMA_RESTRACK_MR; 1973fccec5b8SSteve Wise rdma_restrack_add(&mr->res); 197417cd3a2dSSagi Grimberg } 197517cd3a2dSSagi Grimberg 197617cd3a2dSSagi Grimberg return mr; 197717cd3a2dSSagi Grimberg } 19789bee178bSSagi Grimberg EXPORT_SYMBOL(ib_alloc_mr); 197900f7ec36SSteve Wise 19801da177e4SLinus Torvalds /* "Fast" memory regions */ 19811da177e4SLinus Torvalds 19821da177e4SLinus Torvalds struct ib_fmr *ib_alloc_fmr(struct ib_pd *pd, 19831da177e4SLinus Torvalds int mr_access_flags, 19841da177e4SLinus Torvalds struct ib_fmr_attr *fmr_attr) 19851da177e4SLinus Torvalds { 19861da177e4SLinus Torvalds struct ib_fmr *fmr; 19871da177e4SLinus Torvalds 19881da177e4SLinus Torvalds if (!pd->device->alloc_fmr) 198987915bf8SLeon Romanovsky return ERR_PTR(-EOPNOTSUPP); 19901da177e4SLinus Torvalds 19911da177e4SLinus Torvalds fmr = pd->device->alloc_fmr(pd, mr_access_flags, fmr_attr); 19921da177e4SLinus Torvalds if (!IS_ERR(fmr)) { 19931da177e4SLinus Torvalds fmr->device = pd->device; 19941da177e4SLinus Torvalds fmr->pd = pd; 19951da177e4SLinus Torvalds atomic_inc(&pd->usecnt); 19961da177e4SLinus Torvalds } 19971da177e4SLinus Torvalds 19981da177e4SLinus Torvalds return fmr; 19991da177e4SLinus Torvalds } 20001da177e4SLinus Torvalds EXPORT_SYMBOL(ib_alloc_fmr); 20011da177e4SLinus Torvalds 20021da177e4SLinus Torvalds int ib_unmap_fmr(struct list_head *fmr_list) 20031da177e4SLinus Torvalds { 20041da177e4SLinus Torvalds struct ib_fmr *fmr; 20051da177e4SLinus Torvalds 20061da177e4SLinus Torvalds if (list_empty(fmr_list)) 20071da177e4SLinus Torvalds return 0; 20081da177e4SLinus Torvalds 20091da177e4SLinus Torvalds fmr = list_entry(fmr_list->next, struct ib_fmr, list); 20101da177e4SLinus Torvalds return fmr->device->unmap_fmr(fmr_list); 20111da177e4SLinus Torvalds } 20121da177e4SLinus Torvalds EXPORT_SYMBOL(ib_unmap_fmr); 20131da177e4SLinus Torvalds 20141da177e4SLinus Torvalds int ib_dealloc_fmr(struct ib_fmr *fmr) 20151da177e4SLinus Torvalds { 20161da177e4SLinus Torvalds struct ib_pd *pd; 20171da177e4SLinus Torvalds int ret; 20181da177e4SLinus Torvalds 20191da177e4SLinus Torvalds pd = fmr->pd; 20201da177e4SLinus Torvalds ret = fmr->device->dealloc_fmr(fmr); 20211da177e4SLinus Torvalds if (!ret) 20221da177e4SLinus Torvalds atomic_dec(&pd->usecnt); 20231da177e4SLinus Torvalds 20241da177e4SLinus Torvalds return ret; 20251da177e4SLinus Torvalds } 20261da177e4SLinus Torvalds EXPORT_SYMBOL(ib_dealloc_fmr); 20271da177e4SLinus Torvalds 20281da177e4SLinus Torvalds /* Multicast groups */ 20291da177e4SLinus Torvalds 203052363335SNoa Osherovich static bool is_valid_mcast_lid(struct ib_qp *qp, u16 lid) 203152363335SNoa Osherovich { 203252363335SNoa Osherovich struct ib_qp_init_attr init_attr = {}; 203352363335SNoa Osherovich struct ib_qp_attr attr = {}; 203452363335SNoa Osherovich int num_eth_ports = 0; 203552363335SNoa Osherovich int port; 203652363335SNoa Osherovich 203752363335SNoa Osherovich /* If QP state >= init, it is assigned to a port and we can check this 203852363335SNoa Osherovich * port only. 203952363335SNoa Osherovich */ 204052363335SNoa Osherovich if (!ib_query_qp(qp, &attr, IB_QP_STATE | IB_QP_PORT, &init_attr)) { 204152363335SNoa Osherovich if (attr.qp_state >= IB_QPS_INIT) { 2042e6f9bc34SAlex Estrin if (rdma_port_get_link_layer(qp->device, attr.port_num) != 204352363335SNoa Osherovich IB_LINK_LAYER_INFINIBAND) 204452363335SNoa Osherovich return true; 204552363335SNoa Osherovich goto lid_check; 204652363335SNoa Osherovich } 204752363335SNoa Osherovich } 204852363335SNoa Osherovich 204952363335SNoa Osherovich /* Can't get a quick answer, iterate over all ports */ 205052363335SNoa Osherovich for (port = 0; port < qp->device->phys_port_cnt; port++) 2051e6f9bc34SAlex Estrin if (rdma_port_get_link_layer(qp->device, port) != 205252363335SNoa Osherovich IB_LINK_LAYER_INFINIBAND) 205352363335SNoa Osherovich num_eth_ports++; 205452363335SNoa Osherovich 205552363335SNoa Osherovich /* If we have at lease one Ethernet port, RoCE annex declares that 205652363335SNoa Osherovich * multicast LID should be ignored. We can't tell at this step if the 205752363335SNoa Osherovich * QP belongs to an IB or Ethernet port. 205852363335SNoa Osherovich */ 205952363335SNoa Osherovich if (num_eth_ports) 206052363335SNoa Osherovich return true; 206152363335SNoa Osherovich 206252363335SNoa Osherovich /* If all the ports are IB, we can check according to IB spec. */ 206352363335SNoa Osherovich lid_check: 206452363335SNoa Osherovich return !(lid < be16_to_cpu(IB_MULTICAST_LID_BASE) || 206552363335SNoa Osherovich lid == be16_to_cpu(IB_LID_PERMISSIVE)); 206652363335SNoa Osherovich } 206752363335SNoa Osherovich 20681da177e4SLinus Torvalds int ib_attach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid) 20691da177e4SLinus Torvalds { 2070c3bccbfbSOr Gerlitz int ret; 2071c3bccbfbSOr Gerlitz 20720c33aeedSJack Morgenstein if (!qp->device->attach_mcast) 207387915bf8SLeon Romanovsky return -EOPNOTSUPP; 2074be1d325aSNoa Osherovich 2075be1d325aSNoa Osherovich if (!rdma_is_multicast_addr((struct in6_addr *)gid->raw) || 2076be1d325aSNoa Osherovich qp->qp_type != IB_QPT_UD || !is_valid_mcast_lid(qp, lid)) 20770c33aeedSJack Morgenstein return -EINVAL; 20780c33aeedSJack Morgenstein 2079c3bccbfbSOr Gerlitz ret = qp->device->attach_mcast(qp, gid, lid); 2080c3bccbfbSOr Gerlitz if (!ret) 2081c3bccbfbSOr Gerlitz atomic_inc(&qp->usecnt); 2082c3bccbfbSOr Gerlitz return ret; 20831da177e4SLinus Torvalds } 20841da177e4SLinus Torvalds EXPORT_SYMBOL(ib_attach_mcast); 20851da177e4SLinus Torvalds 20861da177e4SLinus Torvalds int ib_detach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid) 20871da177e4SLinus Torvalds { 2088c3bccbfbSOr Gerlitz int ret; 2089c3bccbfbSOr Gerlitz 20900c33aeedSJack Morgenstein if (!qp->device->detach_mcast) 209187915bf8SLeon Romanovsky return -EOPNOTSUPP; 2092be1d325aSNoa Osherovich 2093be1d325aSNoa Osherovich if (!rdma_is_multicast_addr((struct in6_addr *)gid->raw) || 2094be1d325aSNoa Osherovich qp->qp_type != IB_QPT_UD || !is_valid_mcast_lid(qp, lid)) 20950c33aeedSJack Morgenstein return -EINVAL; 20960c33aeedSJack Morgenstein 2097c3bccbfbSOr Gerlitz ret = qp->device->detach_mcast(qp, gid, lid); 2098c3bccbfbSOr Gerlitz if (!ret) 2099c3bccbfbSOr Gerlitz atomic_dec(&qp->usecnt); 2100c3bccbfbSOr Gerlitz return ret; 21011da177e4SLinus Torvalds } 21021da177e4SLinus Torvalds EXPORT_SYMBOL(ib_detach_mcast); 210359991f94SSean Hefty 2104f66c8ba4SLeon Romanovsky struct ib_xrcd *__ib_alloc_xrcd(struct ib_device *device, const char *caller) 210559991f94SSean Hefty { 210659991f94SSean Hefty struct ib_xrcd *xrcd; 210759991f94SSean Hefty 210859991f94SSean Hefty if (!device->alloc_xrcd) 210987915bf8SLeon Romanovsky return ERR_PTR(-EOPNOTSUPP); 211059991f94SSean Hefty 211159991f94SSean Hefty xrcd = device->alloc_xrcd(device, NULL, NULL); 211259991f94SSean Hefty if (!IS_ERR(xrcd)) { 211359991f94SSean Hefty xrcd->device = device; 211453d0bd1eSSean Hefty xrcd->inode = NULL; 211559991f94SSean Hefty atomic_set(&xrcd->usecnt, 0); 2116d3d72d90SSean Hefty mutex_init(&xrcd->tgt_qp_mutex); 2117d3d72d90SSean Hefty INIT_LIST_HEAD(&xrcd->tgt_qp_list); 211859991f94SSean Hefty } 211959991f94SSean Hefty 212059991f94SSean Hefty return xrcd; 212159991f94SSean Hefty } 2122f66c8ba4SLeon Romanovsky EXPORT_SYMBOL(__ib_alloc_xrcd); 212359991f94SSean Hefty 212459991f94SSean Hefty int ib_dealloc_xrcd(struct ib_xrcd *xrcd) 212559991f94SSean Hefty { 2126d3d72d90SSean Hefty struct ib_qp *qp; 2127d3d72d90SSean Hefty int ret; 2128d3d72d90SSean Hefty 212959991f94SSean Hefty if (atomic_read(&xrcd->usecnt)) 213059991f94SSean Hefty return -EBUSY; 213159991f94SSean Hefty 2132d3d72d90SSean Hefty while (!list_empty(&xrcd->tgt_qp_list)) { 2133d3d72d90SSean Hefty qp = list_entry(xrcd->tgt_qp_list.next, struct ib_qp, xrcd_list); 2134d3d72d90SSean Hefty ret = ib_destroy_qp(qp); 2135d3d72d90SSean Hefty if (ret) 2136d3d72d90SSean Hefty return ret; 2137d3d72d90SSean Hefty } 2138d3d72d90SSean Hefty 213959991f94SSean Hefty return xrcd->device->dealloc_xrcd(xrcd); 214059991f94SSean Hefty } 214159991f94SSean Hefty EXPORT_SYMBOL(ib_dealloc_xrcd); 2142319a441dSHadar Hen Zion 21435fd251c8SYishai Hadas /** 21445fd251c8SYishai Hadas * ib_create_wq - Creates a WQ associated with the specified protection 21455fd251c8SYishai Hadas * domain. 21465fd251c8SYishai Hadas * @pd: The protection domain associated with the WQ. 21471f58621eSRandy Dunlap * @wq_attr: A list of initial attributes required to create the 21485fd251c8SYishai Hadas * WQ. If WQ creation succeeds, then the attributes are updated to 21495fd251c8SYishai Hadas * the actual capabilities of the created WQ. 21505fd251c8SYishai Hadas * 21511f58621eSRandy Dunlap * wq_attr->max_wr and wq_attr->max_sge determine 21525fd251c8SYishai Hadas * the requested size of the WQ, and set to the actual values allocated 21535fd251c8SYishai Hadas * on return. 21545fd251c8SYishai Hadas * If ib_create_wq() succeeds, then max_wr and max_sge will always be 21555fd251c8SYishai Hadas * at least as large as the requested values. 21565fd251c8SYishai Hadas */ 21575fd251c8SYishai Hadas struct ib_wq *ib_create_wq(struct ib_pd *pd, 21585fd251c8SYishai Hadas struct ib_wq_init_attr *wq_attr) 21595fd251c8SYishai Hadas { 21605fd251c8SYishai Hadas struct ib_wq *wq; 21615fd251c8SYishai Hadas 21625fd251c8SYishai Hadas if (!pd->device->create_wq) 216387915bf8SLeon Romanovsky return ERR_PTR(-EOPNOTSUPP); 21645fd251c8SYishai Hadas 21655fd251c8SYishai Hadas wq = pd->device->create_wq(pd, wq_attr, NULL); 21665fd251c8SYishai Hadas if (!IS_ERR(wq)) { 21675fd251c8SYishai Hadas wq->event_handler = wq_attr->event_handler; 21685fd251c8SYishai Hadas wq->wq_context = wq_attr->wq_context; 21695fd251c8SYishai Hadas wq->wq_type = wq_attr->wq_type; 21705fd251c8SYishai Hadas wq->cq = wq_attr->cq; 21715fd251c8SYishai Hadas wq->device = pd->device; 21725fd251c8SYishai Hadas wq->pd = pd; 21735fd251c8SYishai Hadas wq->uobject = NULL; 21745fd251c8SYishai Hadas atomic_inc(&pd->usecnt); 21755fd251c8SYishai Hadas atomic_inc(&wq_attr->cq->usecnt); 21765fd251c8SYishai Hadas atomic_set(&wq->usecnt, 0); 21775fd251c8SYishai Hadas } 21785fd251c8SYishai Hadas return wq; 21795fd251c8SYishai Hadas } 21805fd251c8SYishai Hadas EXPORT_SYMBOL(ib_create_wq); 21815fd251c8SYishai Hadas 21825fd251c8SYishai Hadas /** 21835fd251c8SYishai Hadas * ib_destroy_wq - Destroys the specified WQ. 21845fd251c8SYishai Hadas * @wq: The WQ to destroy. 21855fd251c8SYishai Hadas */ 21865fd251c8SYishai Hadas int ib_destroy_wq(struct ib_wq *wq) 21875fd251c8SYishai Hadas { 21885fd251c8SYishai Hadas int err; 21895fd251c8SYishai Hadas struct ib_cq *cq = wq->cq; 21905fd251c8SYishai Hadas struct ib_pd *pd = wq->pd; 21915fd251c8SYishai Hadas 21925fd251c8SYishai Hadas if (atomic_read(&wq->usecnt)) 21935fd251c8SYishai Hadas return -EBUSY; 21945fd251c8SYishai Hadas 21955fd251c8SYishai Hadas err = wq->device->destroy_wq(wq); 21965fd251c8SYishai Hadas if (!err) { 21975fd251c8SYishai Hadas atomic_dec(&pd->usecnt); 21985fd251c8SYishai Hadas atomic_dec(&cq->usecnt); 21995fd251c8SYishai Hadas } 22005fd251c8SYishai Hadas return err; 22015fd251c8SYishai Hadas } 22025fd251c8SYishai Hadas EXPORT_SYMBOL(ib_destroy_wq); 22035fd251c8SYishai Hadas 22045fd251c8SYishai Hadas /** 22055fd251c8SYishai Hadas * ib_modify_wq - Modifies the specified WQ. 22065fd251c8SYishai Hadas * @wq: The WQ to modify. 22075fd251c8SYishai Hadas * @wq_attr: On input, specifies the WQ attributes to modify. 22085fd251c8SYishai Hadas * @wq_attr_mask: A bit-mask used to specify which attributes of the WQ 22095fd251c8SYishai Hadas * are being modified. 22105fd251c8SYishai Hadas * On output, the current values of selected WQ attributes are returned. 22115fd251c8SYishai Hadas */ 22125fd251c8SYishai Hadas int ib_modify_wq(struct ib_wq *wq, struct ib_wq_attr *wq_attr, 22135fd251c8SYishai Hadas u32 wq_attr_mask) 22145fd251c8SYishai Hadas { 22155fd251c8SYishai Hadas int err; 22165fd251c8SYishai Hadas 22175fd251c8SYishai Hadas if (!wq->device->modify_wq) 221887915bf8SLeon Romanovsky return -EOPNOTSUPP; 22195fd251c8SYishai Hadas 22205fd251c8SYishai Hadas err = wq->device->modify_wq(wq, wq_attr, wq_attr_mask, NULL); 22215fd251c8SYishai Hadas return err; 22225fd251c8SYishai Hadas } 22235fd251c8SYishai Hadas EXPORT_SYMBOL(ib_modify_wq); 22245fd251c8SYishai Hadas 22256d39786bSYishai Hadas /* 22266d39786bSYishai Hadas * ib_create_rwq_ind_table - Creates a RQ Indirection Table. 22276d39786bSYishai Hadas * @device: The device on which to create the rwq indirection table. 22286d39786bSYishai Hadas * @ib_rwq_ind_table_init_attr: A list of initial attributes required to 22296d39786bSYishai Hadas * create the Indirection Table. 22306d39786bSYishai Hadas * 22316d39786bSYishai Hadas * Note: The life time of ib_rwq_ind_table_init_attr->ind_tbl is not less 22326d39786bSYishai Hadas * than the created ib_rwq_ind_table object and the caller is responsible 22336d39786bSYishai Hadas * for its memory allocation/free. 22346d39786bSYishai Hadas */ 22356d39786bSYishai Hadas struct ib_rwq_ind_table *ib_create_rwq_ind_table(struct ib_device *device, 22366d39786bSYishai Hadas struct ib_rwq_ind_table_init_attr *init_attr) 22376d39786bSYishai Hadas { 22386d39786bSYishai Hadas struct ib_rwq_ind_table *rwq_ind_table; 22396d39786bSYishai Hadas int i; 22406d39786bSYishai Hadas u32 table_size; 22416d39786bSYishai Hadas 22426d39786bSYishai Hadas if (!device->create_rwq_ind_table) 224387915bf8SLeon Romanovsky return ERR_PTR(-EOPNOTSUPP); 22446d39786bSYishai Hadas 22456d39786bSYishai Hadas table_size = (1 << init_attr->log_ind_tbl_size); 22466d39786bSYishai Hadas rwq_ind_table = device->create_rwq_ind_table(device, 22476d39786bSYishai Hadas init_attr, NULL); 22486d39786bSYishai Hadas if (IS_ERR(rwq_ind_table)) 22496d39786bSYishai Hadas return rwq_ind_table; 22506d39786bSYishai Hadas 22516d39786bSYishai Hadas rwq_ind_table->ind_tbl = init_attr->ind_tbl; 22526d39786bSYishai Hadas rwq_ind_table->log_ind_tbl_size = init_attr->log_ind_tbl_size; 22536d39786bSYishai Hadas rwq_ind_table->device = device; 22546d39786bSYishai Hadas rwq_ind_table->uobject = NULL; 22556d39786bSYishai Hadas atomic_set(&rwq_ind_table->usecnt, 0); 22566d39786bSYishai Hadas 22576d39786bSYishai Hadas for (i = 0; i < table_size; i++) 22586d39786bSYishai Hadas atomic_inc(&rwq_ind_table->ind_tbl[i]->usecnt); 22596d39786bSYishai Hadas 22606d39786bSYishai Hadas return rwq_ind_table; 22616d39786bSYishai Hadas } 22626d39786bSYishai Hadas EXPORT_SYMBOL(ib_create_rwq_ind_table); 22636d39786bSYishai Hadas 22646d39786bSYishai Hadas /* 22656d39786bSYishai Hadas * ib_destroy_rwq_ind_table - Destroys the specified Indirection Table. 22666d39786bSYishai Hadas * @wq_ind_table: The Indirection Table to destroy. 22676d39786bSYishai Hadas */ 22686d39786bSYishai Hadas int ib_destroy_rwq_ind_table(struct ib_rwq_ind_table *rwq_ind_table) 22696d39786bSYishai Hadas { 22706d39786bSYishai Hadas int err, i; 22716d39786bSYishai Hadas u32 table_size = (1 << rwq_ind_table->log_ind_tbl_size); 22726d39786bSYishai Hadas struct ib_wq **ind_tbl = rwq_ind_table->ind_tbl; 22736d39786bSYishai Hadas 22746d39786bSYishai Hadas if (atomic_read(&rwq_ind_table->usecnt)) 22756d39786bSYishai Hadas return -EBUSY; 22766d39786bSYishai Hadas 22776d39786bSYishai Hadas err = rwq_ind_table->device->destroy_rwq_ind_table(rwq_ind_table); 22786d39786bSYishai Hadas if (!err) { 22796d39786bSYishai Hadas for (i = 0; i < table_size; i++) 22806d39786bSYishai Hadas atomic_dec(&ind_tbl[i]->usecnt); 22816d39786bSYishai Hadas } 22826d39786bSYishai Hadas 22836d39786bSYishai Hadas return err; 22846d39786bSYishai Hadas } 22856d39786bSYishai Hadas EXPORT_SYMBOL(ib_destroy_rwq_ind_table); 22866d39786bSYishai Hadas 22871b01d335SSagi Grimberg int ib_check_mr_status(struct ib_mr *mr, u32 check_mask, 22881b01d335SSagi Grimberg struct ib_mr_status *mr_status) 22891b01d335SSagi Grimberg { 22901b01d335SSagi Grimberg return mr->device->check_mr_status ? 229187915bf8SLeon Romanovsky mr->device->check_mr_status(mr, check_mask, mr_status) : -EOPNOTSUPP; 22921b01d335SSagi Grimberg } 22931b01d335SSagi Grimberg EXPORT_SYMBOL(ib_check_mr_status); 22944c67e2bfSSagi Grimberg 229550174a7fSEli Cohen int ib_set_vf_link_state(struct ib_device *device, int vf, u8 port, 229650174a7fSEli Cohen int state) 229750174a7fSEli Cohen { 229850174a7fSEli Cohen if (!device->set_vf_link_state) 229987915bf8SLeon Romanovsky return -EOPNOTSUPP; 230050174a7fSEli Cohen 230150174a7fSEli Cohen return device->set_vf_link_state(device, vf, port, state); 230250174a7fSEli Cohen } 230350174a7fSEli Cohen EXPORT_SYMBOL(ib_set_vf_link_state); 230450174a7fSEli Cohen 230550174a7fSEli Cohen int ib_get_vf_config(struct ib_device *device, int vf, u8 port, 230650174a7fSEli Cohen struct ifla_vf_info *info) 230750174a7fSEli Cohen { 230850174a7fSEli Cohen if (!device->get_vf_config) 230987915bf8SLeon Romanovsky return -EOPNOTSUPP; 231050174a7fSEli Cohen 231150174a7fSEli Cohen return device->get_vf_config(device, vf, port, info); 231250174a7fSEli Cohen } 231350174a7fSEli Cohen EXPORT_SYMBOL(ib_get_vf_config); 231450174a7fSEli Cohen 231550174a7fSEli Cohen int ib_get_vf_stats(struct ib_device *device, int vf, u8 port, 231650174a7fSEli Cohen struct ifla_vf_stats *stats) 231750174a7fSEli Cohen { 231850174a7fSEli Cohen if (!device->get_vf_stats) 231987915bf8SLeon Romanovsky return -EOPNOTSUPP; 232050174a7fSEli Cohen 232150174a7fSEli Cohen return device->get_vf_stats(device, vf, port, stats); 232250174a7fSEli Cohen } 232350174a7fSEli Cohen EXPORT_SYMBOL(ib_get_vf_stats); 232450174a7fSEli Cohen 232550174a7fSEli Cohen int ib_set_vf_guid(struct ib_device *device, int vf, u8 port, u64 guid, 232650174a7fSEli Cohen int type) 232750174a7fSEli Cohen { 232850174a7fSEli Cohen if (!device->set_vf_guid) 232987915bf8SLeon Romanovsky return -EOPNOTSUPP; 233050174a7fSEli Cohen 233150174a7fSEli Cohen return device->set_vf_guid(device, vf, port, guid, type); 233250174a7fSEli Cohen } 233350174a7fSEli Cohen EXPORT_SYMBOL(ib_set_vf_guid); 233450174a7fSEli Cohen 23354c67e2bfSSagi Grimberg /** 23364c67e2bfSSagi Grimberg * ib_map_mr_sg() - Map the largest prefix of a dma mapped SG list 23374c67e2bfSSagi Grimberg * and set it the memory region. 23384c67e2bfSSagi Grimberg * @mr: memory region 23394c67e2bfSSagi Grimberg * @sg: dma mapped scatterlist 23404c67e2bfSSagi Grimberg * @sg_nents: number of entries in sg 2341ff2ba993SChristoph Hellwig * @sg_offset: offset in bytes into sg 23424c67e2bfSSagi Grimberg * @page_size: page vector desired page size 23434c67e2bfSSagi Grimberg * 23444c67e2bfSSagi Grimberg * Constraints: 23454c67e2bfSSagi Grimberg * - The first sg element is allowed to have an offset. 234652746129SBart Van Assche * - Each sg element must either be aligned to page_size or virtually 234752746129SBart Van Assche * contiguous to the previous element. In case an sg element has a 234852746129SBart Van Assche * non-contiguous offset, the mapping prefix will not include it. 23494c67e2bfSSagi Grimberg * - The last sg element is allowed to have length less than page_size. 23504c67e2bfSSagi Grimberg * - If sg_nents total byte length exceeds the mr max_num_sge * page_size 23514c67e2bfSSagi Grimberg * then only max_num_sg entries will be mapped. 235252746129SBart Van Assche * - If the MR was allocated with type IB_MR_TYPE_SG_GAPS, none of these 2353f5aa9159SSagi Grimberg * constraints holds and the page_size argument is ignored. 23544c67e2bfSSagi Grimberg * 23554c67e2bfSSagi Grimberg * Returns the number of sg elements that were mapped to the memory region. 23564c67e2bfSSagi Grimberg * 23574c67e2bfSSagi Grimberg * After this completes successfully, the memory region 23584c67e2bfSSagi Grimberg * is ready for registration. 23594c67e2bfSSagi Grimberg */ 2360ff2ba993SChristoph Hellwig int ib_map_mr_sg(struct ib_mr *mr, struct scatterlist *sg, int sg_nents, 23619aa8b321SBart Van Assche unsigned int *sg_offset, unsigned int page_size) 23624c67e2bfSSagi Grimberg { 23634c67e2bfSSagi Grimberg if (unlikely(!mr->device->map_mr_sg)) 236487915bf8SLeon Romanovsky return -EOPNOTSUPP; 23654c67e2bfSSagi Grimberg 23664c67e2bfSSagi Grimberg mr->page_size = page_size; 23674c67e2bfSSagi Grimberg 2368ff2ba993SChristoph Hellwig return mr->device->map_mr_sg(mr, sg, sg_nents, sg_offset); 23694c67e2bfSSagi Grimberg } 23704c67e2bfSSagi Grimberg EXPORT_SYMBOL(ib_map_mr_sg); 23714c67e2bfSSagi Grimberg 23724c67e2bfSSagi Grimberg /** 23734c67e2bfSSagi Grimberg * ib_sg_to_pages() - Convert the largest prefix of a sg list 23744c67e2bfSSagi Grimberg * to a page vector 23754c67e2bfSSagi Grimberg * @mr: memory region 23764c67e2bfSSagi Grimberg * @sgl: dma mapped scatterlist 23774c67e2bfSSagi Grimberg * @sg_nents: number of entries in sg 23789aa8b321SBart Van Assche * @sg_offset_p: IN: start offset in bytes into sg 23799aa8b321SBart Van Assche * OUT: offset in bytes for element n of the sg of the first 23809aa8b321SBart Van Assche * byte that has not been processed where n is the return 23819aa8b321SBart Van Assche * value of this function. 23824c67e2bfSSagi Grimberg * @set_page: driver page assignment function pointer 23834c67e2bfSSagi Grimberg * 23848f5ba10eSBart Van Assche * Core service helper for drivers to convert the largest 23854c67e2bfSSagi Grimberg * prefix of given sg list to a page vector. The sg list 23864c67e2bfSSagi Grimberg * prefix converted is the prefix that meet the requirements 23874c67e2bfSSagi Grimberg * of ib_map_mr_sg. 23884c67e2bfSSagi Grimberg * 23894c67e2bfSSagi Grimberg * Returns the number of sg elements that were assigned to 23904c67e2bfSSagi Grimberg * a page vector. 23914c67e2bfSSagi Grimberg */ 2392ff2ba993SChristoph Hellwig int ib_sg_to_pages(struct ib_mr *mr, struct scatterlist *sgl, int sg_nents, 23939aa8b321SBart Van Assche unsigned int *sg_offset_p, int (*set_page)(struct ib_mr *, u64)) 23944c67e2bfSSagi Grimberg { 23954c67e2bfSSagi Grimberg struct scatterlist *sg; 2396b6aeb980SBart Van Assche u64 last_end_dma_addr = 0; 23979aa8b321SBart Van Assche unsigned int sg_offset = sg_offset_p ? *sg_offset_p : 0; 23984c67e2bfSSagi Grimberg unsigned int last_page_off = 0; 23994c67e2bfSSagi Grimberg u64 page_mask = ~((u64)mr->page_size - 1); 24008f5ba10eSBart Van Assche int i, ret; 24014c67e2bfSSagi Grimberg 24029aa8b321SBart Van Assche if (unlikely(sg_nents <= 0 || sg_offset > sg_dma_len(&sgl[0]))) 24039aa8b321SBart Van Assche return -EINVAL; 24049aa8b321SBart Van Assche 2405ff2ba993SChristoph Hellwig mr->iova = sg_dma_address(&sgl[0]) + sg_offset; 24064c67e2bfSSagi Grimberg mr->length = 0; 24074c67e2bfSSagi Grimberg 24084c67e2bfSSagi Grimberg for_each_sg(sgl, sg, sg_nents, i) { 2409ff2ba993SChristoph Hellwig u64 dma_addr = sg_dma_address(sg) + sg_offset; 24109aa8b321SBart Van Assche u64 prev_addr = dma_addr; 2411ff2ba993SChristoph Hellwig unsigned int dma_len = sg_dma_len(sg) - sg_offset; 24124c67e2bfSSagi Grimberg u64 end_dma_addr = dma_addr + dma_len; 24134c67e2bfSSagi Grimberg u64 page_addr = dma_addr & page_mask; 24144c67e2bfSSagi Grimberg 24158f5ba10eSBart Van Assche /* 24168f5ba10eSBart Van Assche * For the second and later elements, check whether either the 24178f5ba10eSBart Van Assche * end of element i-1 or the start of element i is not aligned 24188f5ba10eSBart Van Assche * on a page boundary. 24198f5ba10eSBart Van Assche */ 24208f5ba10eSBart Van Assche if (i && (last_page_off != 0 || page_addr != dma_addr)) { 24218f5ba10eSBart Van Assche /* Stop mapping if there is a gap. */ 24228f5ba10eSBart Van Assche if (last_end_dma_addr != dma_addr) 24238f5ba10eSBart Van Assche break; 24244c67e2bfSSagi Grimberg 24258f5ba10eSBart Van Assche /* 24268f5ba10eSBart Van Assche * Coalesce this element with the last. If it is small 24278f5ba10eSBart Van Assche * enough just update mr->length. Otherwise start 24288f5ba10eSBart Van Assche * mapping from the next page. 24298f5ba10eSBart Van Assche */ 24308f5ba10eSBart Van Assche goto next_page; 24314c67e2bfSSagi Grimberg } 24324c67e2bfSSagi Grimberg 24334c67e2bfSSagi Grimberg do { 24348f5ba10eSBart Van Assche ret = set_page(mr, page_addr); 24359aa8b321SBart Van Assche if (unlikely(ret < 0)) { 24369aa8b321SBart Van Assche sg_offset = prev_addr - sg_dma_address(sg); 24379aa8b321SBart Van Assche mr->length += prev_addr - dma_addr; 24389aa8b321SBart Van Assche if (sg_offset_p) 24399aa8b321SBart Van Assche *sg_offset_p = sg_offset; 24409aa8b321SBart Van Assche return i || sg_offset ? i : ret; 24419aa8b321SBart Van Assche } 24429aa8b321SBart Van Assche prev_addr = page_addr; 24438f5ba10eSBart Van Assche next_page: 24444c67e2bfSSagi Grimberg page_addr += mr->page_size; 24454c67e2bfSSagi Grimberg } while (page_addr < end_dma_addr); 24464c67e2bfSSagi Grimberg 24474c67e2bfSSagi Grimberg mr->length += dma_len; 24484c67e2bfSSagi Grimberg last_end_dma_addr = end_dma_addr; 24494c67e2bfSSagi Grimberg last_page_off = end_dma_addr & ~page_mask; 2450ff2ba993SChristoph Hellwig 2451ff2ba993SChristoph Hellwig sg_offset = 0; 24524c67e2bfSSagi Grimberg } 24534c67e2bfSSagi Grimberg 24549aa8b321SBart Van Assche if (sg_offset_p) 24559aa8b321SBart Van Assche *sg_offset_p = 0; 24564c67e2bfSSagi Grimberg return i; 24574c67e2bfSSagi Grimberg } 24584c67e2bfSSagi Grimberg EXPORT_SYMBOL(ib_sg_to_pages); 2459765d6774SSteve Wise 2460765d6774SSteve Wise struct ib_drain_cqe { 2461765d6774SSteve Wise struct ib_cqe cqe; 2462765d6774SSteve Wise struct completion done; 2463765d6774SSteve Wise }; 2464765d6774SSteve Wise 2465765d6774SSteve Wise static void ib_drain_qp_done(struct ib_cq *cq, struct ib_wc *wc) 2466765d6774SSteve Wise { 2467765d6774SSteve Wise struct ib_drain_cqe *cqe = container_of(wc->wr_cqe, struct ib_drain_cqe, 2468765d6774SSteve Wise cqe); 2469765d6774SSteve Wise 2470765d6774SSteve Wise complete(&cqe->done); 2471765d6774SSteve Wise } 2472765d6774SSteve Wise 2473765d6774SSteve Wise /* 2474765d6774SSteve Wise * Post a WR and block until its completion is reaped for the SQ. 2475765d6774SSteve Wise */ 2476765d6774SSteve Wise static void __ib_drain_sq(struct ib_qp *qp) 2477765d6774SSteve Wise { 2478f039f44fSBart Van Assche struct ib_cq *cq = qp->send_cq; 2479765d6774SSteve Wise struct ib_qp_attr attr = { .qp_state = IB_QPS_ERR }; 2480765d6774SSteve Wise struct ib_drain_cqe sdrain; 2481a1ae7d03SBart Van Assche struct ib_rdma_wr swr = { 2482a1ae7d03SBart Van Assche .wr = { 24836ee68773SAndrew Morton .next = NULL, 24846ee68773SAndrew Morton { .wr_cqe = &sdrain.cqe, }, 2485a1ae7d03SBart Van Assche .opcode = IB_WR_RDMA_WRITE, 2486a1ae7d03SBart Van Assche }, 2487a1ae7d03SBart Van Assche }; 2488765d6774SSteve Wise int ret; 2489765d6774SSteve Wise 2490765d6774SSteve Wise ret = ib_modify_qp(qp, &attr, IB_QP_STATE); 2491765d6774SSteve Wise if (ret) { 2492765d6774SSteve Wise WARN_ONCE(ret, "failed to drain send queue: %d\n", ret); 2493765d6774SSteve Wise return; 2494765d6774SSteve Wise } 2495765d6774SSteve Wise 2496aaebd377SMax Gurtovoy sdrain.cqe.done = ib_drain_qp_done; 2497aaebd377SMax Gurtovoy init_completion(&sdrain.done); 2498aaebd377SMax Gurtovoy 24991fec77bfSBart Van Assche ret = ib_post_send(qp, &swr.wr, NULL); 2500765d6774SSteve Wise if (ret) { 2501765d6774SSteve Wise WARN_ONCE(ret, "failed to drain send queue: %d\n", ret); 2502765d6774SSteve Wise return; 2503765d6774SSteve Wise } 2504765d6774SSteve Wise 2505f039f44fSBart Van Assche if (cq->poll_ctx == IB_POLL_DIRECT) 2506f039f44fSBart Van Assche while (wait_for_completion_timeout(&sdrain.done, HZ / 10) <= 0) 2507f039f44fSBart Van Assche ib_process_cq_direct(cq, -1); 2508f039f44fSBart Van Assche else 2509765d6774SSteve Wise wait_for_completion(&sdrain.done); 2510765d6774SSteve Wise } 2511765d6774SSteve Wise 2512765d6774SSteve Wise /* 2513765d6774SSteve Wise * Post a WR and block until its completion is reaped for the RQ. 2514765d6774SSteve Wise */ 2515765d6774SSteve Wise static void __ib_drain_rq(struct ib_qp *qp) 2516765d6774SSteve Wise { 2517f039f44fSBart Van Assche struct ib_cq *cq = qp->recv_cq; 2518765d6774SSteve Wise struct ib_qp_attr attr = { .qp_state = IB_QPS_ERR }; 2519765d6774SSteve Wise struct ib_drain_cqe rdrain; 25201fec77bfSBart Van Assche struct ib_recv_wr rwr = {}; 2521765d6774SSteve Wise int ret; 2522765d6774SSteve Wise 2523765d6774SSteve Wise ret = ib_modify_qp(qp, &attr, IB_QP_STATE); 2524765d6774SSteve Wise if (ret) { 2525765d6774SSteve Wise WARN_ONCE(ret, "failed to drain recv queue: %d\n", ret); 2526765d6774SSteve Wise return; 2527765d6774SSteve Wise } 2528765d6774SSteve Wise 2529aaebd377SMax Gurtovoy rwr.wr_cqe = &rdrain.cqe; 2530aaebd377SMax Gurtovoy rdrain.cqe.done = ib_drain_qp_done; 2531aaebd377SMax Gurtovoy init_completion(&rdrain.done); 2532aaebd377SMax Gurtovoy 25331fec77bfSBart Van Assche ret = ib_post_recv(qp, &rwr, NULL); 2534765d6774SSteve Wise if (ret) { 2535765d6774SSteve Wise WARN_ONCE(ret, "failed to drain recv queue: %d\n", ret); 2536765d6774SSteve Wise return; 2537765d6774SSteve Wise } 2538765d6774SSteve Wise 2539f039f44fSBart Van Assche if (cq->poll_ctx == IB_POLL_DIRECT) 2540f039f44fSBart Van Assche while (wait_for_completion_timeout(&rdrain.done, HZ / 10) <= 0) 2541f039f44fSBart Van Assche ib_process_cq_direct(cq, -1); 2542f039f44fSBart Van Assche else 2543765d6774SSteve Wise wait_for_completion(&rdrain.done); 2544765d6774SSteve Wise } 2545765d6774SSteve Wise 2546765d6774SSteve Wise /** 2547765d6774SSteve Wise * ib_drain_sq() - Block until all SQ CQEs have been consumed by the 2548765d6774SSteve Wise * application. 2549765d6774SSteve Wise * @qp: queue pair to drain 2550765d6774SSteve Wise * 2551765d6774SSteve Wise * If the device has a provider-specific drain function, then 2552765d6774SSteve Wise * call that. Otherwise call the generic drain function 2553765d6774SSteve Wise * __ib_drain_sq(). 2554765d6774SSteve Wise * 2555765d6774SSteve Wise * The caller must: 2556765d6774SSteve Wise * 2557765d6774SSteve Wise * ensure there is room in the CQ and SQ for the drain work request and 2558765d6774SSteve Wise * completion. 2559765d6774SSteve Wise * 2560f039f44fSBart Van Assche * allocate the CQ using ib_alloc_cq(). 2561765d6774SSteve Wise * 2562765d6774SSteve Wise * ensure that there are no other contexts that are posting WRs concurrently. 2563765d6774SSteve Wise * Otherwise the drain is not guaranteed. 2564765d6774SSteve Wise */ 2565765d6774SSteve Wise void ib_drain_sq(struct ib_qp *qp) 2566765d6774SSteve Wise { 2567765d6774SSteve Wise if (qp->device->drain_sq) 2568765d6774SSteve Wise qp->device->drain_sq(qp); 2569765d6774SSteve Wise else 2570765d6774SSteve Wise __ib_drain_sq(qp); 2571765d6774SSteve Wise } 2572765d6774SSteve Wise EXPORT_SYMBOL(ib_drain_sq); 2573765d6774SSteve Wise 2574765d6774SSteve Wise /** 2575765d6774SSteve Wise * ib_drain_rq() - Block until all RQ CQEs have been consumed by the 2576765d6774SSteve Wise * application. 2577765d6774SSteve Wise * @qp: queue pair to drain 2578765d6774SSteve Wise * 2579765d6774SSteve Wise * If the device has a provider-specific drain function, then 2580765d6774SSteve Wise * call that. Otherwise call the generic drain function 2581765d6774SSteve Wise * __ib_drain_rq(). 2582765d6774SSteve Wise * 2583765d6774SSteve Wise * The caller must: 2584765d6774SSteve Wise * 2585765d6774SSteve Wise * ensure there is room in the CQ and RQ for the drain work request and 2586765d6774SSteve Wise * completion. 2587765d6774SSteve Wise * 2588f039f44fSBart Van Assche * allocate the CQ using ib_alloc_cq(). 2589765d6774SSteve Wise * 2590765d6774SSteve Wise * ensure that there are no other contexts that are posting WRs concurrently. 2591765d6774SSteve Wise * Otherwise the drain is not guaranteed. 2592765d6774SSteve Wise */ 2593765d6774SSteve Wise void ib_drain_rq(struct ib_qp *qp) 2594765d6774SSteve Wise { 2595765d6774SSteve Wise if (qp->device->drain_rq) 2596765d6774SSteve Wise qp->device->drain_rq(qp); 2597765d6774SSteve Wise else 2598765d6774SSteve Wise __ib_drain_rq(qp); 2599765d6774SSteve Wise } 2600765d6774SSteve Wise EXPORT_SYMBOL(ib_drain_rq); 2601765d6774SSteve Wise 2602765d6774SSteve Wise /** 2603765d6774SSteve Wise * ib_drain_qp() - Block until all CQEs have been consumed by the 2604765d6774SSteve Wise * application on both the RQ and SQ. 2605765d6774SSteve Wise * @qp: queue pair to drain 2606765d6774SSteve Wise * 2607765d6774SSteve Wise * The caller must: 2608765d6774SSteve Wise * 2609765d6774SSteve Wise * ensure there is room in the CQ(s), SQ, and RQ for drain work requests 2610765d6774SSteve Wise * and completions. 2611765d6774SSteve Wise * 2612f039f44fSBart Van Assche * allocate the CQs using ib_alloc_cq(). 2613765d6774SSteve Wise * 2614765d6774SSteve Wise * ensure that there are no other contexts that are posting WRs concurrently. 2615765d6774SSteve Wise * Otherwise the drain is not guaranteed. 2616765d6774SSteve Wise */ 2617765d6774SSteve Wise void ib_drain_qp(struct ib_qp *qp) 2618765d6774SSteve Wise { 2619765d6774SSteve Wise ib_drain_sq(qp); 262042235f80SSagi Grimberg if (!qp->srq) 2621765d6774SSteve Wise ib_drain_rq(qp); 2622765d6774SSteve Wise } 2623765d6774SSteve Wise EXPORT_SYMBOL(ib_drain_qp); 2624f6a8a19bSDenis Drozdov 2625f6a8a19bSDenis Drozdov struct net_device *rdma_alloc_netdev(struct ib_device *device, u8 port_num, 2626f6a8a19bSDenis Drozdov enum rdma_netdev_t type, const char *name, 2627f6a8a19bSDenis Drozdov unsigned char name_assign_type, 2628f6a8a19bSDenis Drozdov void (*setup)(struct net_device *)) 2629f6a8a19bSDenis Drozdov { 2630f6a8a19bSDenis Drozdov struct rdma_netdev_alloc_params params; 2631f6a8a19bSDenis Drozdov struct net_device *netdev; 2632f6a8a19bSDenis Drozdov int rc; 2633f6a8a19bSDenis Drozdov 2634f6a8a19bSDenis Drozdov if (!device->rdma_netdev_get_params) 2635f6a8a19bSDenis Drozdov return ERR_PTR(-EOPNOTSUPP); 2636f6a8a19bSDenis Drozdov 2637f6a8a19bSDenis Drozdov rc = device->rdma_netdev_get_params(device, port_num, type, ¶ms); 2638f6a8a19bSDenis Drozdov if (rc) 2639f6a8a19bSDenis Drozdov return ERR_PTR(rc); 2640f6a8a19bSDenis Drozdov 2641f6a8a19bSDenis Drozdov netdev = alloc_netdev_mqs(params.sizeof_priv, name, name_assign_type, 2642f6a8a19bSDenis Drozdov setup, params.txqs, params.rxqs); 2643f6a8a19bSDenis Drozdov if (!netdev) 2644f6a8a19bSDenis Drozdov return ERR_PTR(-ENOMEM); 2645f6a8a19bSDenis Drozdov 2646f6a8a19bSDenis Drozdov return netdev; 2647f6a8a19bSDenis Drozdov } 2648f6a8a19bSDenis Drozdov EXPORT_SYMBOL(rdma_alloc_netdev); 26495d6b0cb3SDenis Drozdov 26505d6b0cb3SDenis Drozdov int rdma_init_netdev(struct ib_device *device, u8 port_num, 26515d6b0cb3SDenis Drozdov enum rdma_netdev_t type, const char *name, 26525d6b0cb3SDenis Drozdov unsigned char name_assign_type, 26535d6b0cb3SDenis Drozdov void (*setup)(struct net_device *), 26545d6b0cb3SDenis Drozdov struct net_device *netdev) 26555d6b0cb3SDenis Drozdov { 26565d6b0cb3SDenis Drozdov struct rdma_netdev_alloc_params params; 26575d6b0cb3SDenis Drozdov int rc; 26585d6b0cb3SDenis Drozdov 26595d6b0cb3SDenis Drozdov if (!device->rdma_netdev_get_params) 26605d6b0cb3SDenis Drozdov return -EOPNOTSUPP; 26615d6b0cb3SDenis Drozdov 26625d6b0cb3SDenis Drozdov rc = device->rdma_netdev_get_params(device, port_num, type, ¶ms); 26635d6b0cb3SDenis Drozdov if (rc) 26645d6b0cb3SDenis Drozdov return rc; 26655d6b0cb3SDenis Drozdov 26665d6b0cb3SDenis Drozdov return params.initialize_rdma_netdev(device, port_num, 26675d6b0cb3SDenis Drozdov netdev, params.param); 26685d6b0cb3SDenis Drozdov } 26695d6b0cb3SDenis Drozdov EXPORT_SYMBOL(rdma_init_netdev); 2670