18700e3e7SMoni Shoua /* 28700e3e7SMoni Shoua * Copyright (c) 2016 Mellanox Technologies Ltd. All rights reserved. 38700e3e7SMoni Shoua * Copyright (c) 2015 System Fabric Works, Inc. All rights reserved. 48700e3e7SMoni Shoua * 58700e3e7SMoni Shoua * This software is available to you under a choice of one of two 68700e3e7SMoni Shoua * licenses. You may choose to be licensed under the terms of the GNU 78700e3e7SMoni Shoua * General Public License (GPL) Version 2, available from the file 88700e3e7SMoni Shoua * COPYING in the main directory of this source tree, or the 98700e3e7SMoni Shoua * OpenIB.org BSD license below: 108700e3e7SMoni Shoua * 118700e3e7SMoni Shoua * Redistribution and use in source and binary forms, with or 128700e3e7SMoni Shoua * without modification, are permitted provided that the following 138700e3e7SMoni Shoua * conditions are met: 148700e3e7SMoni Shoua * 158700e3e7SMoni Shoua * - Redistributions of source code must retain the above 168700e3e7SMoni Shoua * copyright notice, this list of conditions and the following 178700e3e7SMoni Shoua * disclaimer. 188700e3e7SMoni Shoua * 198700e3e7SMoni Shoua * - Redistributions in binary form must reproduce the above 208700e3e7SMoni Shoua * copyright notice, this list of conditions and the following 218700e3e7SMoni Shoua * disclaimer in the documentation and/or other materials 228700e3e7SMoni Shoua * provided with the distribution. 238700e3e7SMoni Shoua * 248700e3e7SMoni Shoua * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 258700e3e7SMoni Shoua * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 268700e3e7SMoni Shoua * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 278700e3e7SMoni Shoua * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 288700e3e7SMoni Shoua * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 298700e3e7SMoni Shoua * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 308700e3e7SMoni Shoua * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 318700e3e7SMoni Shoua * SOFTWARE. 328700e3e7SMoni Shoua */ 338700e3e7SMoni Shoua 340bbb3b74SBart Van Assche #include <linux/dma-mapping.h> 354d6f2859SYuval Shaia #include <net/addrconf.h> 368700e3e7SMoni Shoua #include "rxe.h" 378700e3e7SMoni Shoua #include "rxe_loc.h" 388700e3e7SMoni Shoua #include "rxe_queue.h" 390b1e5b99SYonatan Cohen #include "rxe_hw_counters.h" 408700e3e7SMoni Shoua 418700e3e7SMoni Shoua static int rxe_query_device(struct ib_device *dev, 428700e3e7SMoni Shoua struct ib_device_attr *attr, 438700e3e7SMoni Shoua struct ib_udata *uhw) 448700e3e7SMoni Shoua { 458700e3e7SMoni Shoua struct rxe_dev *rxe = to_rdev(dev); 468700e3e7SMoni Shoua 478700e3e7SMoni Shoua if (uhw->inlen || uhw->outlen) 488700e3e7SMoni Shoua return -EINVAL; 498700e3e7SMoni Shoua 508700e3e7SMoni Shoua *attr = rxe->attr; 518700e3e7SMoni Shoua return 0; 528700e3e7SMoni Shoua } 538700e3e7SMoni Shoua 548700e3e7SMoni Shoua static int rxe_query_port(struct ib_device *dev, 558700e3e7SMoni Shoua u8 port_num, struct ib_port_attr *attr) 568700e3e7SMoni Shoua { 578700e3e7SMoni Shoua struct rxe_dev *rxe = to_rdev(dev); 588700e3e7SMoni Shoua struct rxe_port *port; 59d4186194SYuval Shaia int rc = -EINVAL; 608700e3e7SMoni Shoua 618700e3e7SMoni Shoua if (unlikely(port_num != 1)) { 628700e3e7SMoni Shoua pr_warn("invalid port_number %d\n", port_num); 63d4186194SYuval Shaia goto out; 648700e3e7SMoni Shoua } 658700e3e7SMoni Shoua 668700e3e7SMoni Shoua port = &rxe->port; 678700e3e7SMoni Shoua 68c4550c63SOr Gerlitz /* *attr being zeroed by the caller, avoid zeroing it here */ 698700e3e7SMoni Shoua *attr = port->attr; 708700e3e7SMoni Shoua 718700e3e7SMoni Shoua mutex_lock(&rxe->usdev_lock); 72d4186194SYuval Shaia rc = ib_get_eth_speed(dev, port_num, &attr->active_speed, 73e404f945SParav Pandit &attr->active_width); 748700e3e7SMoni Shoua mutex_unlock(&rxe->usdev_lock); 758700e3e7SMoni Shoua 76d4186194SYuval Shaia out: 77d4186194SYuval Shaia return rc; 788700e3e7SMoni Shoua } 798700e3e7SMoni Shoua 808700e3e7SMoni Shoua static int rxe_query_gid(struct ib_device *device, 818700e3e7SMoni Shoua u8 port_num, int index, union ib_gid *gid) 828700e3e7SMoni Shoua { 838700e3e7SMoni Shoua int ret; 848700e3e7SMoni Shoua 858700e3e7SMoni Shoua if (index > RXE_PORT_GID_TBL_LEN) 868700e3e7SMoni Shoua return -EINVAL; 878700e3e7SMoni Shoua 888700e3e7SMoni Shoua ret = ib_get_cached_gid(device, port_num, index, gid, NULL); 898700e3e7SMoni Shoua if (ret == -EAGAIN) { 908700e3e7SMoni Shoua memcpy(gid, &zgid, sizeof(*gid)); 918700e3e7SMoni Shoua return 0; 928700e3e7SMoni Shoua } 938700e3e7SMoni Shoua 948700e3e7SMoni Shoua return ret; 958700e3e7SMoni Shoua } 968700e3e7SMoni Shoua 978700e3e7SMoni Shoua static int rxe_add_gid(struct ib_device *device, u8 port_num, unsigned int 988700e3e7SMoni Shoua index, const union ib_gid *gid, 998700e3e7SMoni Shoua const struct ib_gid_attr *attr, void **context) 1008700e3e7SMoni Shoua { 1018700e3e7SMoni Shoua if (index >= RXE_PORT_GID_TBL_LEN) 1028700e3e7SMoni Shoua return -EINVAL; 1038700e3e7SMoni Shoua return 0; 1048700e3e7SMoni Shoua } 1058700e3e7SMoni Shoua 1068700e3e7SMoni Shoua static int rxe_del_gid(struct ib_device *device, u8 port_num, unsigned int 1078700e3e7SMoni Shoua index, void **context) 1088700e3e7SMoni Shoua { 1098700e3e7SMoni Shoua if (index >= RXE_PORT_GID_TBL_LEN) 1108700e3e7SMoni Shoua return -EINVAL; 1118700e3e7SMoni Shoua return 0; 1128700e3e7SMoni Shoua } 1138700e3e7SMoni Shoua 1148700e3e7SMoni Shoua static struct net_device *rxe_get_netdev(struct ib_device *device, 1158700e3e7SMoni Shoua u8 port_num) 1168700e3e7SMoni Shoua { 1178700e3e7SMoni Shoua struct rxe_dev *rxe = to_rdev(device); 1188700e3e7SMoni Shoua 1198700e3e7SMoni Shoua if (rxe->ndev) { 1208700e3e7SMoni Shoua dev_hold(rxe->ndev); 1218700e3e7SMoni Shoua return rxe->ndev; 1228700e3e7SMoni Shoua } 1238700e3e7SMoni Shoua 1248700e3e7SMoni Shoua return NULL; 1258700e3e7SMoni Shoua } 1268700e3e7SMoni Shoua 1278700e3e7SMoni Shoua static int rxe_query_pkey(struct ib_device *device, 1288700e3e7SMoni Shoua u8 port_num, u16 index, u16 *pkey) 1298700e3e7SMoni Shoua { 1308700e3e7SMoni Shoua struct rxe_dev *rxe = to_rdev(device); 1318700e3e7SMoni Shoua struct rxe_port *port; 1328700e3e7SMoni Shoua 1338700e3e7SMoni Shoua if (unlikely(port_num != 1)) { 13485e9f1dbSBart Van Assche dev_warn(device->dev.parent, "invalid port_num = %d\n", 1358700e3e7SMoni Shoua port_num); 1368700e3e7SMoni Shoua goto err1; 1378700e3e7SMoni Shoua } 1388700e3e7SMoni Shoua 1398700e3e7SMoni Shoua port = &rxe->port; 1408700e3e7SMoni Shoua 1418700e3e7SMoni Shoua if (unlikely(index >= port->attr.pkey_tbl_len)) { 14285e9f1dbSBart Van Assche dev_warn(device->dev.parent, "invalid index = %d\n", 1438700e3e7SMoni Shoua index); 1448700e3e7SMoni Shoua goto err1; 1458700e3e7SMoni Shoua } 1468700e3e7SMoni Shoua 1478700e3e7SMoni Shoua *pkey = port->pkey_tbl[index]; 1488700e3e7SMoni Shoua return 0; 1498700e3e7SMoni Shoua 1508700e3e7SMoni Shoua err1: 1518700e3e7SMoni Shoua return -EINVAL; 1528700e3e7SMoni Shoua } 1538700e3e7SMoni Shoua 1548700e3e7SMoni Shoua static int rxe_modify_device(struct ib_device *dev, 1558700e3e7SMoni Shoua int mask, struct ib_device_modify *attr) 1568700e3e7SMoni Shoua { 1578700e3e7SMoni Shoua struct rxe_dev *rxe = to_rdev(dev); 1588700e3e7SMoni Shoua 1598700e3e7SMoni Shoua if (mask & IB_DEVICE_MODIFY_SYS_IMAGE_GUID) 1608700e3e7SMoni Shoua rxe->attr.sys_image_guid = cpu_to_be64(attr->sys_image_guid); 1618700e3e7SMoni Shoua 1628700e3e7SMoni Shoua if (mask & IB_DEVICE_MODIFY_NODE_DESC) { 1638700e3e7SMoni Shoua memcpy(rxe->ib_dev.node_desc, 1648700e3e7SMoni Shoua attr->node_desc, sizeof(rxe->ib_dev.node_desc)); 1658700e3e7SMoni Shoua } 1668700e3e7SMoni Shoua 1678700e3e7SMoni Shoua return 0; 1688700e3e7SMoni Shoua } 1698700e3e7SMoni Shoua 1708700e3e7SMoni Shoua static int rxe_modify_port(struct ib_device *dev, 1718700e3e7SMoni Shoua u8 port_num, int mask, struct ib_port_modify *attr) 1728700e3e7SMoni Shoua { 1738700e3e7SMoni Shoua struct rxe_dev *rxe = to_rdev(dev); 1748700e3e7SMoni Shoua struct rxe_port *port; 1758700e3e7SMoni Shoua 1768700e3e7SMoni Shoua if (unlikely(port_num != 1)) { 1778700e3e7SMoni Shoua pr_warn("invalid port_num = %d\n", port_num); 1788700e3e7SMoni Shoua goto err1; 1798700e3e7SMoni Shoua } 1808700e3e7SMoni Shoua 1818700e3e7SMoni Shoua port = &rxe->port; 1828700e3e7SMoni Shoua 1838700e3e7SMoni Shoua port->attr.port_cap_flags |= attr->set_port_cap_mask; 1848700e3e7SMoni Shoua port->attr.port_cap_flags &= ~attr->clr_port_cap_mask; 1858700e3e7SMoni Shoua 1868700e3e7SMoni Shoua if (mask & IB_PORT_RESET_QKEY_CNTR) 1878700e3e7SMoni Shoua port->attr.qkey_viol_cntr = 0; 1888700e3e7SMoni Shoua 1898700e3e7SMoni Shoua return 0; 1908700e3e7SMoni Shoua 1918700e3e7SMoni Shoua err1: 1928700e3e7SMoni Shoua return -EINVAL; 1938700e3e7SMoni Shoua } 1948700e3e7SMoni Shoua 1958700e3e7SMoni Shoua static enum rdma_link_layer rxe_get_link_layer(struct ib_device *dev, 1968700e3e7SMoni Shoua u8 port_num) 1978700e3e7SMoni Shoua { 1988700e3e7SMoni Shoua struct rxe_dev *rxe = to_rdev(dev); 1998700e3e7SMoni Shoua 200839f5ac0SBart Van Assche return rxe_link_layer(rxe, port_num); 2018700e3e7SMoni Shoua } 2028700e3e7SMoni Shoua 2038700e3e7SMoni Shoua static struct ib_ucontext *rxe_alloc_ucontext(struct ib_device *dev, 2048700e3e7SMoni Shoua struct ib_udata *udata) 2058700e3e7SMoni Shoua { 2068700e3e7SMoni Shoua struct rxe_dev *rxe = to_rdev(dev); 2078700e3e7SMoni Shoua struct rxe_ucontext *uc; 2088700e3e7SMoni Shoua 2098700e3e7SMoni Shoua uc = rxe_alloc(&rxe->uc_pool); 2108700e3e7SMoni Shoua return uc ? &uc->ibuc : ERR_PTR(-ENOMEM); 2118700e3e7SMoni Shoua } 2128700e3e7SMoni Shoua 2138700e3e7SMoni Shoua static int rxe_dealloc_ucontext(struct ib_ucontext *ibuc) 2148700e3e7SMoni Shoua { 2158700e3e7SMoni Shoua struct rxe_ucontext *uc = to_ruc(ibuc); 2168700e3e7SMoni Shoua 2178700e3e7SMoni Shoua rxe_drop_ref(uc); 2188700e3e7SMoni Shoua return 0; 2198700e3e7SMoni Shoua } 2208700e3e7SMoni Shoua 2218700e3e7SMoni Shoua static int rxe_port_immutable(struct ib_device *dev, u8 port_num, 2228700e3e7SMoni Shoua struct ib_port_immutable *immutable) 2238700e3e7SMoni Shoua { 2248700e3e7SMoni Shoua int err; 2258700e3e7SMoni Shoua struct ib_port_attr attr; 2268700e3e7SMoni Shoua 227c4550c63SOr Gerlitz immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE_UDP_ENCAP; 228c4550c63SOr Gerlitz 229c4550c63SOr Gerlitz err = ib_query_port(dev, port_num, &attr); 2308700e3e7SMoni Shoua if (err) 2318700e3e7SMoni Shoua return err; 2328700e3e7SMoni Shoua 2338700e3e7SMoni Shoua immutable->pkey_tbl_len = attr.pkey_tbl_len; 2348700e3e7SMoni Shoua immutable->gid_tbl_len = attr.gid_tbl_len; 2358700e3e7SMoni Shoua immutable->max_mad_size = IB_MGMT_MAD_SIZE; 2368700e3e7SMoni Shoua 2378700e3e7SMoni Shoua return 0; 2388700e3e7SMoni Shoua } 2398700e3e7SMoni Shoua 2408700e3e7SMoni Shoua static struct ib_pd *rxe_alloc_pd(struct ib_device *dev, 2418700e3e7SMoni Shoua struct ib_ucontext *context, 2428700e3e7SMoni Shoua struct ib_udata *udata) 2438700e3e7SMoni Shoua { 2448700e3e7SMoni Shoua struct rxe_dev *rxe = to_rdev(dev); 2458700e3e7SMoni Shoua struct rxe_pd *pd; 2468700e3e7SMoni Shoua 2478700e3e7SMoni Shoua pd = rxe_alloc(&rxe->pd_pool); 2488700e3e7SMoni Shoua return pd ? &pd->ibpd : ERR_PTR(-ENOMEM); 2498700e3e7SMoni Shoua } 2508700e3e7SMoni Shoua 2518700e3e7SMoni Shoua static int rxe_dealloc_pd(struct ib_pd *ibpd) 2528700e3e7SMoni Shoua { 2538700e3e7SMoni Shoua struct rxe_pd *pd = to_rpd(ibpd); 2548700e3e7SMoni Shoua 2558700e3e7SMoni Shoua rxe_drop_ref(pd); 2568700e3e7SMoni Shoua return 0; 2578700e3e7SMoni Shoua } 2588700e3e7SMoni Shoua 25990898850SDasaratharaman Chandramouli static int rxe_init_av(struct rxe_dev *rxe, struct rdma_ah_attr *attr, 2608700e3e7SMoni Shoua struct rxe_av *av) 2618700e3e7SMoni Shoua { 2628700e3e7SMoni Shoua int err; 2638700e3e7SMoni Shoua union ib_gid sgid; 2648700e3e7SMoni Shoua struct ib_gid_attr sgid_attr; 2658700e3e7SMoni Shoua 266d8966fcdSDasaratharaman Chandramouli err = ib_get_cached_gid(&rxe->ib_dev, rdma_ah_get_port_num(attr), 267d8966fcdSDasaratharaman Chandramouli rdma_ah_read_grh(attr)->sgid_index, &sgid, 2688700e3e7SMoni Shoua &sgid_attr); 2698700e3e7SMoni Shoua if (err) { 2708700e3e7SMoni Shoua pr_err("Failed to query sgid. err = %d\n", err); 2718700e3e7SMoni Shoua return err; 2728700e3e7SMoni Shoua } 2738700e3e7SMoni Shoua 274ca3d9feeSZhu Yanjun rxe_av_from_attr(rdma_ah_get_port_num(attr), av, attr); 275316663c6SZhu Yanjun rxe_av_fill_ip_info(av, attr, &sgid_attr, &sgid); 2768700e3e7SMoni Shoua 2778700e3e7SMoni Shoua if (sgid_attr.ndev) 2788700e3e7SMoni Shoua dev_put(sgid_attr.ndev); 27945a290f8SZhu Yanjun return 0; 2808700e3e7SMoni Shoua } 2818700e3e7SMoni Shoua 28290898850SDasaratharaman Chandramouli static struct ib_ah *rxe_create_ah(struct ib_pd *ibpd, 28390898850SDasaratharaman Chandramouli struct rdma_ah_attr *attr, 284477864c8SMoni Shoua struct ib_udata *udata) 285477864c8SMoni Shoua 2868700e3e7SMoni Shoua { 2878700e3e7SMoni Shoua int err; 2888700e3e7SMoni Shoua struct rxe_dev *rxe = to_rdev(ibpd->device); 2898700e3e7SMoni Shoua struct rxe_pd *pd = to_rpd(ibpd); 2908700e3e7SMoni Shoua struct rxe_ah *ah; 2918700e3e7SMoni Shoua 2928700e3e7SMoni Shoua err = rxe_av_chk_attr(rxe, attr); 2938700e3e7SMoni Shoua if (err) 2948700e3e7SMoni Shoua goto err1; 2958700e3e7SMoni Shoua 2968700e3e7SMoni Shoua ah = rxe_alloc(&rxe->ah_pool); 2978700e3e7SMoni Shoua if (!ah) { 2988700e3e7SMoni Shoua err = -ENOMEM; 2998700e3e7SMoni Shoua goto err1; 3008700e3e7SMoni Shoua } 3018700e3e7SMoni Shoua 3028700e3e7SMoni Shoua rxe_add_ref(pd); 3038700e3e7SMoni Shoua ah->pd = pd; 3048700e3e7SMoni Shoua 3058700e3e7SMoni Shoua err = rxe_init_av(rxe, attr, &ah->av); 3068700e3e7SMoni Shoua if (err) 3078700e3e7SMoni Shoua goto err2; 3088700e3e7SMoni Shoua 3098700e3e7SMoni Shoua return &ah->ibah; 3108700e3e7SMoni Shoua 3118700e3e7SMoni Shoua err2: 3128700e3e7SMoni Shoua rxe_drop_ref(pd); 3138700e3e7SMoni Shoua rxe_drop_ref(ah); 3148700e3e7SMoni Shoua err1: 3158700e3e7SMoni Shoua return ERR_PTR(err); 3168700e3e7SMoni Shoua } 3178700e3e7SMoni Shoua 31890898850SDasaratharaman Chandramouli static int rxe_modify_ah(struct ib_ah *ibah, struct rdma_ah_attr *attr) 3198700e3e7SMoni Shoua { 3208700e3e7SMoni Shoua int err; 3218700e3e7SMoni Shoua struct rxe_dev *rxe = to_rdev(ibah->device); 3228700e3e7SMoni Shoua struct rxe_ah *ah = to_rah(ibah); 3238700e3e7SMoni Shoua 3248700e3e7SMoni Shoua err = rxe_av_chk_attr(rxe, attr); 3258700e3e7SMoni Shoua if (err) 3268700e3e7SMoni Shoua return err; 3278700e3e7SMoni Shoua 3288700e3e7SMoni Shoua err = rxe_init_av(rxe, attr, &ah->av); 3298700e3e7SMoni Shoua if (err) 3308700e3e7SMoni Shoua return err; 3318700e3e7SMoni Shoua 3328700e3e7SMoni Shoua return 0; 3338700e3e7SMoni Shoua } 3348700e3e7SMoni Shoua 33590898850SDasaratharaman Chandramouli static int rxe_query_ah(struct ib_ah *ibah, struct rdma_ah_attr *attr) 3368700e3e7SMoni Shoua { 3378700e3e7SMoni Shoua struct rxe_ah *ah = to_rah(ibah); 3388700e3e7SMoni Shoua 339eca7ddf9SDasaratharaman Chandramouli memset(attr, 0, sizeof(*attr)); 34044c58487SDasaratharaman Chandramouli attr->type = ibah->type; 3419c96f3d4SZhu Yanjun rxe_av_to_attr(&ah->av, attr); 3428700e3e7SMoni Shoua return 0; 3438700e3e7SMoni Shoua } 3448700e3e7SMoni Shoua 3458700e3e7SMoni Shoua static int rxe_destroy_ah(struct ib_ah *ibah) 3468700e3e7SMoni Shoua { 3478700e3e7SMoni Shoua struct rxe_ah *ah = to_rah(ibah); 3488700e3e7SMoni Shoua 3498700e3e7SMoni Shoua rxe_drop_ref(ah->pd); 3508700e3e7SMoni Shoua rxe_drop_ref(ah); 3518700e3e7SMoni Shoua return 0; 3528700e3e7SMoni Shoua } 3538700e3e7SMoni Shoua 3548700e3e7SMoni Shoua static int post_one_recv(struct rxe_rq *rq, struct ib_recv_wr *ibwr) 3558700e3e7SMoni Shoua { 3568700e3e7SMoni Shoua int err; 3578700e3e7SMoni Shoua int i; 3588700e3e7SMoni Shoua u32 length; 3598700e3e7SMoni Shoua struct rxe_recv_wqe *recv_wqe; 3608700e3e7SMoni Shoua int num_sge = ibwr->num_sge; 3618700e3e7SMoni Shoua 3628700e3e7SMoni Shoua if (unlikely(queue_full(rq->queue))) { 3638700e3e7SMoni Shoua err = -ENOMEM; 3648700e3e7SMoni Shoua goto err1; 3658700e3e7SMoni Shoua } 3668700e3e7SMoni Shoua 3678700e3e7SMoni Shoua if (unlikely(num_sge > rq->max_sge)) { 3688700e3e7SMoni Shoua err = -EINVAL; 3698700e3e7SMoni Shoua goto err1; 3708700e3e7SMoni Shoua } 3718700e3e7SMoni Shoua 3728700e3e7SMoni Shoua length = 0; 3738700e3e7SMoni Shoua for (i = 0; i < num_sge; i++) 3748700e3e7SMoni Shoua length += ibwr->sg_list[i].length; 3758700e3e7SMoni Shoua 3768700e3e7SMoni Shoua recv_wqe = producer_addr(rq->queue); 3778700e3e7SMoni Shoua recv_wqe->wr_id = ibwr->wr_id; 3788700e3e7SMoni Shoua recv_wqe->num_sge = num_sge; 3798700e3e7SMoni Shoua 3808700e3e7SMoni Shoua memcpy(recv_wqe->dma.sge, ibwr->sg_list, 3818700e3e7SMoni Shoua num_sge * sizeof(struct ib_sge)); 3828700e3e7SMoni Shoua 3838700e3e7SMoni Shoua recv_wqe->dma.length = length; 3848700e3e7SMoni Shoua recv_wqe->dma.resid = length; 3858700e3e7SMoni Shoua recv_wqe->dma.num_sge = num_sge; 3868700e3e7SMoni Shoua recv_wqe->dma.cur_sge = 0; 3878700e3e7SMoni Shoua recv_wqe->dma.sge_offset = 0; 3888700e3e7SMoni Shoua 3898700e3e7SMoni Shoua /* make sure all changes to the work queue are written before we 3908700e3e7SMoni Shoua * update the producer pointer 3918700e3e7SMoni Shoua */ 3928700e3e7SMoni Shoua smp_wmb(); 3938700e3e7SMoni Shoua 3948700e3e7SMoni Shoua advance_producer(rq->queue); 3958700e3e7SMoni Shoua return 0; 3968700e3e7SMoni Shoua 3978700e3e7SMoni Shoua err1: 3988700e3e7SMoni Shoua return err; 3998700e3e7SMoni Shoua } 4008700e3e7SMoni Shoua 4018700e3e7SMoni Shoua static struct ib_srq *rxe_create_srq(struct ib_pd *ibpd, 4028700e3e7SMoni Shoua struct ib_srq_init_attr *init, 4038700e3e7SMoni Shoua struct ib_udata *udata) 4048700e3e7SMoni Shoua { 4058700e3e7SMoni Shoua int err; 4068700e3e7SMoni Shoua struct rxe_dev *rxe = to_rdev(ibpd->device); 4078700e3e7SMoni Shoua struct rxe_pd *pd = to_rpd(ibpd); 4088700e3e7SMoni Shoua struct rxe_srq *srq; 4098700e3e7SMoni Shoua struct ib_ucontext *context = udata ? ibpd->uobject->context : NULL; 4108700e3e7SMoni Shoua 4118700e3e7SMoni Shoua err = rxe_srq_chk_attr(rxe, NULL, &init->attr, IB_SRQ_INIT_MASK); 4128700e3e7SMoni Shoua if (err) 4138700e3e7SMoni Shoua goto err1; 4148700e3e7SMoni Shoua 4158700e3e7SMoni Shoua srq = rxe_alloc(&rxe->srq_pool); 4168700e3e7SMoni Shoua if (!srq) { 4178700e3e7SMoni Shoua err = -ENOMEM; 4188700e3e7SMoni Shoua goto err1; 4198700e3e7SMoni Shoua } 4208700e3e7SMoni Shoua 4218700e3e7SMoni Shoua rxe_add_index(srq); 4228700e3e7SMoni Shoua rxe_add_ref(pd); 4238700e3e7SMoni Shoua srq->pd = pd; 4248700e3e7SMoni Shoua 4258700e3e7SMoni Shoua err = rxe_srq_from_init(rxe, srq, init, context, udata); 4268700e3e7SMoni Shoua if (err) 4278700e3e7SMoni Shoua goto err2; 4288700e3e7SMoni Shoua 4298700e3e7SMoni Shoua return &srq->ibsrq; 4308700e3e7SMoni Shoua 4318700e3e7SMoni Shoua err2: 4328700e3e7SMoni Shoua rxe_drop_ref(pd); 4338700e3e7SMoni Shoua rxe_drop_index(srq); 4348700e3e7SMoni Shoua rxe_drop_ref(srq); 4358700e3e7SMoni Shoua err1: 4368700e3e7SMoni Shoua return ERR_PTR(err); 4378700e3e7SMoni Shoua } 4388700e3e7SMoni Shoua 4398700e3e7SMoni Shoua static int rxe_modify_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr, 4408700e3e7SMoni Shoua enum ib_srq_attr_mask mask, 4418700e3e7SMoni Shoua struct ib_udata *udata) 4428700e3e7SMoni Shoua { 4438700e3e7SMoni Shoua int err; 4448700e3e7SMoni Shoua struct rxe_srq *srq = to_rsrq(ibsrq); 4458700e3e7SMoni Shoua struct rxe_dev *rxe = to_rdev(ibsrq->device); 4468700e3e7SMoni Shoua 4478700e3e7SMoni Shoua err = rxe_srq_chk_attr(rxe, srq, attr, mask); 4488700e3e7SMoni Shoua if (err) 4498700e3e7SMoni Shoua goto err1; 4508700e3e7SMoni Shoua 4518700e3e7SMoni Shoua err = rxe_srq_from_attr(rxe, srq, attr, mask, udata); 4528700e3e7SMoni Shoua if (err) 4538700e3e7SMoni Shoua goto err1; 4548700e3e7SMoni Shoua 4558700e3e7SMoni Shoua return 0; 4568700e3e7SMoni Shoua 4578700e3e7SMoni Shoua err1: 4588700e3e7SMoni Shoua return err; 4598700e3e7SMoni Shoua } 4608700e3e7SMoni Shoua 4618700e3e7SMoni Shoua static int rxe_query_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr) 4628700e3e7SMoni Shoua { 4638700e3e7SMoni Shoua struct rxe_srq *srq = to_rsrq(ibsrq); 4648700e3e7SMoni Shoua 4658700e3e7SMoni Shoua if (srq->error) 4668700e3e7SMoni Shoua return -EINVAL; 4678700e3e7SMoni Shoua 4688700e3e7SMoni Shoua attr->max_wr = srq->rq.queue->buf->index_mask; 4698700e3e7SMoni Shoua attr->max_sge = srq->rq.max_sge; 4708700e3e7SMoni Shoua attr->srq_limit = srq->limit; 4718700e3e7SMoni Shoua return 0; 4728700e3e7SMoni Shoua } 4738700e3e7SMoni Shoua 4748700e3e7SMoni Shoua static int rxe_destroy_srq(struct ib_srq *ibsrq) 4758700e3e7SMoni Shoua { 4768700e3e7SMoni Shoua struct rxe_srq *srq = to_rsrq(ibsrq); 4778700e3e7SMoni Shoua 4788700e3e7SMoni Shoua if (srq->rq.queue) 4798700e3e7SMoni Shoua rxe_queue_cleanup(srq->rq.queue); 4808700e3e7SMoni Shoua 4818700e3e7SMoni Shoua rxe_drop_ref(srq->pd); 4828700e3e7SMoni Shoua rxe_drop_index(srq); 4838700e3e7SMoni Shoua rxe_drop_ref(srq); 4848700e3e7SMoni Shoua 4858700e3e7SMoni Shoua return 0; 4868700e3e7SMoni Shoua } 4878700e3e7SMoni Shoua 4888700e3e7SMoni Shoua static int rxe_post_srq_recv(struct ib_srq *ibsrq, struct ib_recv_wr *wr, 4898700e3e7SMoni Shoua struct ib_recv_wr **bad_wr) 4908700e3e7SMoni Shoua { 4918700e3e7SMoni Shoua int err = 0; 4928700e3e7SMoni Shoua unsigned long flags; 4938700e3e7SMoni Shoua struct rxe_srq *srq = to_rsrq(ibsrq); 4948700e3e7SMoni Shoua 4958700e3e7SMoni Shoua spin_lock_irqsave(&srq->rq.producer_lock, flags); 4968700e3e7SMoni Shoua 4978700e3e7SMoni Shoua while (wr) { 4988700e3e7SMoni Shoua err = post_one_recv(&srq->rq, wr); 4998700e3e7SMoni Shoua if (unlikely(err)) 5008700e3e7SMoni Shoua break; 5018700e3e7SMoni Shoua wr = wr->next; 5028700e3e7SMoni Shoua } 5038700e3e7SMoni Shoua 5048700e3e7SMoni Shoua spin_unlock_irqrestore(&srq->rq.producer_lock, flags); 5058700e3e7SMoni Shoua 5068700e3e7SMoni Shoua if (err) 5078700e3e7SMoni Shoua *bad_wr = wr; 5088700e3e7SMoni Shoua 5098700e3e7SMoni Shoua return err; 5108700e3e7SMoni Shoua } 5118700e3e7SMoni Shoua 5128700e3e7SMoni Shoua static struct ib_qp *rxe_create_qp(struct ib_pd *ibpd, 5138700e3e7SMoni Shoua struct ib_qp_init_attr *init, 5148700e3e7SMoni Shoua struct ib_udata *udata) 5158700e3e7SMoni Shoua { 5168700e3e7SMoni Shoua int err; 5178700e3e7SMoni Shoua struct rxe_dev *rxe = to_rdev(ibpd->device); 5188700e3e7SMoni Shoua struct rxe_pd *pd = to_rpd(ibpd); 5198700e3e7SMoni Shoua struct rxe_qp *qp; 5208700e3e7SMoni Shoua 5218700e3e7SMoni Shoua err = rxe_qp_chk_init(rxe, init); 5228700e3e7SMoni Shoua if (err) 5238700e3e7SMoni Shoua goto err1; 5248700e3e7SMoni Shoua 5258700e3e7SMoni Shoua qp = rxe_alloc(&rxe->qp_pool); 5268700e3e7SMoni Shoua if (!qp) { 5278700e3e7SMoni Shoua err = -ENOMEM; 5288700e3e7SMoni Shoua goto err1; 5298700e3e7SMoni Shoua } 5308700e3e7SMoni Shoua 5318700e3e7SMoni Shoua if (udata) { 5328700e3e7SMoni Shoua if (udata->inlen) { 5338700e3e7SMoni Shoua err = -EINVAL; 5345b9ea16cSAndrew Boyer goto err2; 5358700e3e7SMoni Shoua } 5368700e3e7SMoni Shoua qp->is_user = 1; 5378700e3e7SMoni Shoua } 5388700e3e7SMoni Shoua 5398700e3e7SMoni Shoua rxe_add_index(qp); 5408700e3e7SMoni Shoua 5418700e3e7SMoni Shoua err = rxe_qp_from_init(rxe, qp, pd, init, udata, ibpd); 5428700e3e7SMoni Shoua if (err) 5435b9ea16cSAndrew Boyer goto err3; 5448700e3e7SMoni Shoua 5458700e3e7SMoni Shoua return &qp->ibqp; 5468700e3e7SMoni Shoua 5475b9ea16cSAndrew Boyer err3: 5488700e3e7SMoni Shoua rxe_drop_index(qp); 5495b9ea16cSAndrew Boyer err2: 5508700e3e7SMoni Shoua rxe_drop_ref(qp); 5518700e3e7SMoni Shoua err1: 5528700e3e7SMoni Shoua return ERR_PTR(err); 5538700e3e7SMoni Shoua } 5548700e3e7SMoni Shoua 5558700e3e7SMoni Shoua static int rxe_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, 5568700e3e7SMoni Shoua int mask, struct ib_udata *udata) 5578700e3e7SMoni Shoua { 5588700e3e7SMoni Shoua int err; 5598700e3e7SMoni Shoua struct rxe_dev *rxe = to_rdev(ibqp->device); 5608700e3e7SMoni Shoua struct rxe_qp *qp = to_rqp(ibqp); 5618700e3e7SMoni Shoua 5628700e3e7SMoni Shoua err = rxe_qp_chk_attr(rxe, qp, attr, mask); 5638700e3e7SMoni Shoua if (err) 5648700e3e7SMoni Shoua goto err1; 5658700e3e7SMoni Shoua 5668700e3e7SMoni Shoua err = rxe_qp_from_attr(qp, attr, mask, udata); 5678700e3e7SMoni Shoua if (err) 5688700e3e7SMoni Shoua goto err1; 5698700e3e7SMoni Shoua 5708700e3e7SMoni Shoua return 0; 5718700e3e7SMoni Shoua 5728700e3e7SMoni Shoua err1: 5738700e3e7SMoni Shoua return err; 5748700e3e7SMoni Shoua } 5758700e3e7SMoni Shoua 5768700e3e7SMoni Shoua static int rxe_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, 5778700e3e7SMoni Shoua int mask, struct ib_qp_init_attr *init) 5788700e3e7SMoni Shoua { 5798700e3e7SMoni Shoua struct rxe_qp *qp = to_rqp(ibqp); 5808700e3e7SMoni Shoua 5818700e3e7SMoni Shoua rxe_qp_to_init(qp, init); 5828700e3e7SMoni Shoua rxe_qp_to_attr(qp, attr, mask); 5838700e3e7SMoni Shoua 5848700e3e7SMoni Shoua return 0; 5858700e3e7SMoni Shoua } 5868700e3e7SMoni Shoua 5878700e3e7SMoni Shoua static int rxe_destroy_qp(struct ib_qp *ibqp) 5888700e3e7SMoni Shoua { 5898700e3e7SMoni Shoua struct rxe_qp *qp = to_rqp(ibqp); 5908700e3e7SMoni Shoua 5918700e3e7SMoni Shoua rxe_qp_destroy(qp); 5928700e3e7SMoni Shoua rxe_drop_index(qp); 5938700e3e7SMoni Shoua rxe_drop_ref(qp); 5948700e3e7SMoni Shoua return 0; 5958700e3e7SMoni Shoua } 5968700e3e7SMoni Shoua 5978700e3e7SMoni Shoua static int validate_send_wr(struct rxe_qp *qp, struct ib_send_wr *ibwr, 5988700e3e7SMoni Shoua unsigned int mask, unsigned int length) 5998700e3e7SMoni Shoua { 6008700e3e7SMoni Shoua int num_sge = ibwr->num_sge; 6018700e3e7SMoni Shoua struct rxe_sq *sq = &qp->sq; 6028700e3e7SMoni Shoua 6038700e3e7SMoni Shoua if (unlikely(num_sge > sq->max_sge)) 6048700e3e7SMoni Shoua goto err1; 6058700e3e7SMoni Shoua 6068700e3e7SMoni Shoua if (unlikely(mask & WR_ATOMIC_MASK)) { 6078700e3e7SMoni Shoua if (length < 8) 6088700e3e7SMoni Shoua goto err1; 6098700e3e7SMoni Shoua 6108700e3e7SMoni Shoua if (atomic_wr(ibwr)->remote_addr & 0x7) 6118700e3e7SMoni Shoua goto err1; 6128700e3e7SMoni Shoua } 6138700e3e7SMoni Shoua 6148700e3e7SMoni Shoua if (unlikely((ibwr->send_flags & IB_SEND_INLINE) && 6158700e3e7SMoni Shoua (length > sq->max_inline))) 6168700e3e7SMoni Shoua goto err1; 6178700e3e7SMoni Shoua 6188700e3e7SMoni Shoua return 0; 6198700e3e7SMoni Shoua 6208700e3e7SMoni Shoua err1: 6218700e3e7SMoni Shoua return -EINVAL; 6228700e3e7SMoni Shoua } 6238700e3e7SMoni Shoua 6248700e3e7SMoni Shoua static void init_send_wr(struct rxe_qp *qp, struct rxe_send_wr *wr, 6258700e3e7SMoni Shoua struct ib_send_wr *ibwr) 6268700e3e7SMoni Shoua { 6278700e3e7SMoni Shoua wr->wr_id = ibwr->wr_id; 6288700e3e7SMoni Shoua wr->num_sge = ibwr->num_sge; 6298700e3e7SMoni Shoua wr->opcode = ibwr->opcode; 6308700e3e7SMoni Shoua wr->send_flags = ibwr->send_flags; 6318700e3e7SMoni Shoua 6328700e3e7SMoni Shoua if (qp_type(qp) == IB_QPT_UD || 6338700e3e7SMoni Shoua qp_type(qp) == IB_QPT_SMI || 6348700e3e7SMoni Shoua qp_type(qp) == IB_QPT_GSI) { 6358700e3e7SMoni Shoua wr->wr.ud.remote_qpn = ud_wr(ibwr)->remote_qpn; 6368700e3e7SMoni Shoua wr->wr.ud.remote_qkey = ud_wr(ibwr)->remote_qkey; 6378700e3e7SMoni Shoua if (qp_type(qp) == IB_QPT_GSI) 6388700e3e7SMoni Shoua wr->wr.ud.pkey_index = ud_wr(ibwr)->pkey_index; 6398700e3e7SMoni Shoua if (wr->opcode == IB_WR_SEND_WITH_IMM) 6408700e3e7SMoni Shoua wr->ex.imm_data = ibwr->ex.imm_data; 6418700e3e7SMoni Shoua } else { 6428700e3e7SMoni Shoua switch (wr->opcode) { 6438700e3e7SMoni Shoua case IB_WR_RDMA_WRITE_WITH_IMM: 6448700e3e7SMoni Shoua wr->ex.imm_data = ibwr->ex.imm_data; 645ea6ee93bSBart Van Assche /* fall through */ 6468700e3e7SMoni Shoua case IB_WR_RDMA_READ: 6478700e3e7SMoni Shoua case IB_WR_RDMA_WRITE: 6488700e3e7SMoni Shoua wr->wr.rdma.remote_addr = rdma_wr(ibwr)->remote_addr; 6498700e3e7SMoni Shoua wr->wr.rdma.rkey = rdma_wr(ibwr)->rkey; 6508700e3e7SMoni Shoua break; 6518700e3e7SMoni Shoua case IB_WR_SEND_WITH_IMM: 6528700e3e7SMoni Shoua wr->ex.imm_data = ibwr->ex.imm_data; 6538700e3e7SMoni Shoua break; 6548700e3e7SMoni Shoua case IB_WR_SEND_WITH_INV: 6558700e3e7SMoni Shoua wr->ex.invalidate_rkey = ibwr->ex.invalidate_rkey; 6568700e3e7SMoni Shoua break; 6578700e3e7SMoni Shoua case IB_WR_ATOMIC_CMP_AND_SWP: 6588700e3e7SMoni Shoua case IB_WR_ATOMIC_FETCH_AND_ADD: 6598700e3e7SMoni Shoua wr->wr.atomic.remote_addr = 6608700e3e7SMoni Shoua atomic_wr(ibwr)->remote_addr; 6618700e3e7SMoni Shoua wr->wr.atomic.compare_add = 6628700e3e7SMoni Shoua atomic_wr(ibwr)->compare_add; 6638700e3e7SMoni Shoua wr->wr.atomic.swap = atomic_wr(ibwr)->swap; 6648700e3e7SMoni Shoua wr->wr.atomic.rkey = atomic_wr(ibwr)->rkey; 6658700e3e7SMoni Shoua break; 6668700e3e7SMoni Shoua case IB_WR_LOCAL_INV: 6678700e3e7SMoni Shoua wr->ex.invalidate_rkey = ibwr->ex.invalidate_rkey; 6688700e3e7SMoni Shoua break; 6698700e3e7SMoni Shoua case IB_WR_REG_MR: 6708700e3e7SMoni Shoua wr->wr.reg.mr = reg_wr(ibwr)->mr; 6718700e3e7SMoni Shoua wr->wr.reg.key = reg_wr(ibwr)->key; 6728700e3e7SMoni Shoua wr->wr.reg.access = reg_wr(ibwr)->access; 6738700e3e7SMoni Shoua break; 6748700e3e7SMoni Shoua default: 6758700e3e7SMoni Shoua break; 6768700e3e7SMoni Shoua } 6778700e3e7SMoni Shoua } 6788700e3e7SMoni Shoua } 6798700e3e7SMoni Shoua 6808700e3e7SMoni Shoua static int init_send_wqe(struct rxe_qp *qp, struct ib_send_wr *ibwr, 6818700e3e7SMoni Shoua unsigned int mask, unsigned int length, 6828700e3e7SMoni Shoua struct rxe_send_wqe *wqe) 6838700e3e7SMoni Shoua { 6848700e3e7SMoni Shoua int num_sge = ibwr->num_sge; 6858700e3e7SMoni Shoua struct ib_sge *sge; 6868700e3e7SMoni Shoua int i; 6878700e3e7SMoni Shoua u8 *p; 6888700e3e7SMoni Shoua 6898700e3e7SMoni Shoua init_send_wr(qp, &wqe->wr, ibwr); 6908700e3e7SMoni Shoua 6918700e3e7SMoni Shoua if (qp_type(qp) == IB_QPT_UD || 6928700e3e7SMoni Shoua qp_type(qp) == IB_QPT_SMI || 6938700e3e7SMoni Shoua qp_type(qp) == IB_QPT_GSI) 6948700e3e7SMoni Shoua memcpy(&wqe->av, &to_rah(ud_wr(ibwr)->ah)->av, sizeof(wqe->av)); 6958700e3e7SMoni Shoua 6968700e3e7SMoni Shoua if (unlikely(ibwr->send_flags & IB_SEND_INLINE)) { 6978700e3e7SMoni Shoua p = wqe->dma.inline_data; 6988700e3e7SMoni Shoua 6998700e3e7SMoni Shoua sge = ibwr->sg_list; 7008700e3e7SMoni Shoua for (i = 0; i < num_sge; i++, sge++) { 7018700e3e7SMoni Shoua memcpy(p, (void *)(uintptr_t)sge->addr, 7028700e3e7SMoni Shoua sge->length); 7038700e3e7SMoni Shoua 7048700e3e7SMoni Shoua p += sge->length; 7058700e3e7SMoni Shoua } 7068700e3e7SMoni Shoua } else if (mask & WR_REG_MASK) { 7078700e3e7SMoni Shoua wqe->mask = mask; 7088700e3e7SMoni Shoua wqe->state = wqe_state_posted; 7098700e3e7SMoni Shoua return 0; 7108700e3e7SMoni Shoua } else 7118700e3e7SMoni Shoua memcpy(wqe->dma.sge, ibwr->sg_list, 7128700e3e7SMoni Shoua num_sge * sizeof(struct ib_sge)); 7138700e3e7SMoni Shoua 714a6544a62SBart Van Assche wqe->iova = mask & WR_ATOMIC_MASK ? atomic_wr(ibwr)->remote_addr : 715a6544a62SBart Van Assche mask & WR_READ_OR_WRITE_MASK ? rdma_wr(ibwr)->remote_addr : 0; 7168700e3e7SMoni Shoua wqe->mask = mask; 7178700e3e7SMoni Shoua wqe->dma.length = length; 7188700e3e7SMoni Shoua wqe->dma.resid = length; 7198700e3e7SMoni Shoua wqe->dma.num_sge = num_sge; 7208700e3e7SMoni Shoua wqe->dma.cur_sge = 0; 7218700e3e7SMoni Shoua wqe->dma.sge_offset = 0; 7228700e3e7SMoni Shoua wqe->state = wqe_state_posted; 7238700e3e7SMoni Shoua wqe->ssn = atomic_add_return(1, &qp->ssn); 7248700e3e7SMoni Shoua 7258700e3e7SMoni Shoua return 0; 7268700e3e7SMoni Shoua } 7278700e3e7SMoni Shoua 7288700e3e7SMoni Shoua static int post_one_send(struct rxe_qp *qp, struct ib_send_wr *ibwr, 729e404f945SParav Pandit unsigned int mask, u32 length) 7308700e3e7SMoni Shoua { 7318700e3e7SMoni Shoua int err; 7328700e3e7SMoni Shoua struct rxe_sq *sq = &qp->sq; 7338700e3e7SMoni Shoua struct rxe_send_wqe *send_wqe; 7348700e3e7SMoni Shoua unsigned long flags; 7358700e3e7SMoni Shoua 7368700e3e7SMoni Shoua err = validate_send_wr(qp, ibwr, mask, length); 7378700e3e7SMoni Shoua if (err) 7388700e3e7SMoni Shoua return err; 7398700e3e7SMoni Shoua 7408700e3e7SMoni Shoua spin_lock_irqsave(&qp->sq.sq_lock, flags); 7418700e3e7SMoni Shoua 7428700e3e7SMoni Shoua if (unlikely(queue_full(sq->queue))) { 7438700e3e7SMoni Shoua err = -ENOMEM; 7448700e3e7SMoni Shoua goto err1; 7458700e3e7SMoni Shoua } 7468700e3e7SMoni Shoua 7478700e3e7SMoni Shoua send_wqe = producer_addr(sq->queue); 7488700e3e7SMoni Shoua 7498700e3e7SMoni Shoua err = init_send_wqe(qp, ibwr, mask, length, send_wqe); 7508700e3e7SMoni Shoua if (unlikely(err)) 7518700e3e7SMoni Shoua goto err1; 7528700e3e7SMoni Shoua 7538700e3e7SMoni Shoua /* 7548700e3e7SMoni Shoua * make sure all changes to the work queue are 7558700e3e7SMoni Shoua * written before we update the producer pointer 7568700e3e7SMoni Shoua */ 7578700e3e7SMoni Shoua smp_wmb(); 7588700e3e7SMoni Shoua 7598700e3e7SMoni Shoua advance_producer(sq->queue); 7608700e3e7SMoni Shoua spin_unlock_irqrestore(&qp->sq.sq_lock, flags); 7618700e3e7SMoni Shoua 7628700e3e7SMoni Shoua return 0; 7638700e3e7SMoni Shoua 7648700e3e7SMoni Shoua err1: 7658700e3e7SMoni Shoua spin_unlock_irqrestore(&qp->sq.sq_lock, flags); 7668700e3e7SMoni Shoua return err; 7678700e3e7SMoni Shoua } 7688700e3e7SMoni Shoua 769063af595SParav Pandit static int rxe_post_send_kernel(struct rxe_qp *qp, struct ib_send_wr *wr, 7708700e3e7SMoni Shoua struct ib_send_wr **bad_wr) 7718700e3e7SMoni Shoua { 7728700e3e7SMoni Shoua int err = 0; 7738700e3e7SMoni Shoua unsigned int mask; 7748700e3e7SMoni Shoua unsigned int length = 0; 7758700e3e7SMoni Shoua int i; 7768700e3e7SMoni Shoua int must_sched; 7778700e3e7SMoni Shoua 7788700e3e7SMoni Shoua while (wr) { 7798700e3e7SMoni Shoua mask = wr_opcode_mask(wr->opcode, qp); 7808700e3e7SMoni Shoua if (unlikely(!mask)) { 7818700e3e7SMoni Shoua err = -EINVAL; 7828700e3e7SMoni Shoua *bad_wr = wr; 7838700e3e7SMoni Shoua break; 7848700e3e7SMoni Shoua } 7858700e3e7SMoni Shoua 7868700e3e7SMoni Shoua if (unlikely((wr->send_flags & IB_SEND_INLINE) && 7878700e3e7SMoni Shoua !(mask & WR_INLINE_MASK))) { 7888700e3e7SMoni Shoua err = -EINVAL; 7898700e3e7SMoni Shoua *bad_wr = wr; 7908700e3e7SMoni Shoua break; 7918700e3e7SMoni Shoua } 7928700e3e7SMoni Shoua 7938700e3e7SMoni Shoua length = 0; 7948700e3e7SMoni Shoua for (i = 0; i < wr->num_sge; i++) 7958700e3e7SMoni Shoua length += wr->sg_list[i].length; 7968700e3e7SMoni Shoua 7978700e3e7SMoni Shoua err = post_one_send(qp, wr, mask, length); 7988700e3e7SMoni Shoua 7998700e3e7SMoni Shoua if (err) { 8008700e3e7SMoni Shoua *bad_wr = wr; 8018700e3e7SMoni Shoua break; 8028700e3e7SMoni Shoua } 8038700e3e7SMoni Shoua wr = wr->next; 8048700e3e7SMoni Shoua } 8058700e3e7SMoni Shoua 8068700e3e7SMoni Shoua /* 8078700e3e7SMoni Shoua * Must sched in case of GSI QP because ib_send_mad() hold irq lock, 8088700e3e7SMoni Shoua * and the requester call ip_local_out_sk() that takes spin_lock_bh. 8098700e3e7SMoni Shoua */ 8108700e3e7SMoni Shoua must_sched = (qp_type(qp) == IB_QPT_GSI) || 8118700e3e7SMoni Shoua (queue_count(qp->sq.queue) > 1); 8128700e3e7SMoni Shoua 8138700e3e7SMoni Shoua rxe_run_task(&qp->req.task, must_sched); 8146f301e06SBart Van Assche if (unlikely(qp->req.state == QP_STATE_ERROR)) 8156f301e06SBart Van Assche rxe_run_task(&qp->comp.task, 1); 8168700e3e7SMoni Shoua 8178700e3e7SMoni Shoua return err; 8188700e3e7SMoni Shoua } 8198700e3e7SMoni Shoua 820063af595SParav Pandit static int rxe_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr, 821063af595SParav Pandit struct ib_send_wr **bad_wr) 822063af595SParav Pandit { 823063af595SParav Pandit struct rxe_qp *qp = to_rqp(ibqp); 824063af595SParav Pandit 825063af595SParav Pandit if (unlikely(!qp->valid)) { 826063af595SParav Pandit *bad_wr = wr; 827063af595SParav Pandit return -EINVAL; 828063af595SParav Pandit } 829063af595SParav Pandit 830063af595SParav Pandit if (unlikely(qp->req.state < QP_STATE_READY)) { 831063af595SParav Pandit *bad_wr = wr; 832063af595SParav Pandit return -EINVAL; 833063af595SParav Pandit } 834063af595SParav Pandit 835063af595SParav Pandit if (qp->is_user) { 836063af595SParav Pandit /* Utilize process context to do protocol processing */ 837063af595SParav Pandit rxe_run_task(&qp->req.task, 0); 838063af595SParav Pandit return 0; 839063af595SParav Pandit } else 840063af595SParav Pandit return rxe_post_send_kernel(qp, wr, bad_wr); 841063af595SParav Pandit } 842063af595SParav Pandit 8438700e3e7SMoni Shoua static int rxe_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *wr, 8448700e3e7SMoni Shoua struct ib_recv_wr **bad_wr) 8458700e3e7SMoni Shoua { 8468700e3e7SMoni Shoua int err = 0; 8478700e3e7SMoni Shoua struct rxe_qp *qp = to_rqp(ibqp); 8488700e3e7SMoni Shoua struct rxe_rq *rq = &qp->rq; 8498700e3e7SMoni Shoua unsigned long flags; 8508700e3e7SMoni Shoua 8518700e3e7SMoni Shoua if (unlikely((qp_state(qp) < IB_QPS_INIT) || !qp->valid)) { 8528700e3e7SMoni Shoua *bad_wr = wr; 8538700e3e7SMoni Shoua err = -EINVAL; 8548700e3e7SMoni Shoua goto err1; 8558700e3e7SMoni Shoua } 8568700e3e7SMoni Shoua 8578700e3e7SMoni Shoua if (unlikely(qp->srq)) { 8588700e3e7SMoni Shoua *bad_wr = wr; 8598700e3e7SMoni Shoua err = -EINVAL; 8608700e3e7SMoni Shoua goto err1; 8618700e3e7SMoni Shoua } 8628700e3e7SMoni Shoua 8638700e3e7SMoni Shoua spin_lock_irqsave(&rq->producer_lock, flags); 8648700e3e7SMoni Shoua 8658700e3e7SMoni Shoua while (wr) { 8668700e3e7SMoni Shoua err = post_one_recv(rq, wr); 8678700e3e7SMoni Shoua if (unlikely(err)) { 8688700e3e7SMoni Shoua *bad_wr = wr; 8698700e3e7SMoni Shoua break; 8708700e3e7SMoni Shoua } 8718700e3e7SMoni Shoua wr = wr->next; 8728700e3e7SMoni Shoua } 8738700e3e7SMoni Shoua 8748700e3e7SMoni Shoua spin_unlock_irqrestore(&rq->producer_lock, flags); 8758700e3e7SMoni Shoua 87612171971SVijay Immanuel if (qp->resp.state == QP_STATE_ERROR) 87712171971SVijay Immanuel rxe_run_task(&qp->resp.task, 1); 87812171971SVijay Immanuel 8798700e3e7SMoni Shoua err1: 8808700e3e7SMoni Shoua return err; 8818700e3e7SMoni Shoua } 8828700e3e7SMoni Shoua 8838700e3e7SMoni Shoua static struct ib_cq *rxe_create_cq(struct ib_device *dev, 8848700e3e7SMoni Shoua const struct ib_cq_init_attr *attr, 8858700e3e7SMoni Shoua struct ib_ucontext *context, 8868700e3e7SMoni Shoua struct ib_udata *udata) 8878700e3e7SMoni Shoua { 8888700e3e7SMoni Shoua int err; 8898700e3e7SMoni Shoua struct rxe_dev *rxe = to_rdev(dev); 8908700e3e7SMoni Shoua struct rxe_cq *cq; 8918700e3e7SMoni Shoua 8928700e3e7SMoni Shoua if (attr->flags) 8938700e3e7SMoni Shoua return ERR_PTR(-EINVAL); 8948700e3e7SMoni Shoua 895b92ec0feSJason Gunthorpe err = rxe_cq_chk_attr(rxe, NULL, attr->cqe, attr->comp_vector); 8968700e3e7SMoni Shoua if (err) 8978700e3e7SMoni Shoua goto err1; 8988700e3e7SMoni Shoua 8998700e3e7SMoni Shoua cq = rxe_alloc(&rxe->cq_pool); 9008700e3e7SMoni Shoua if (!cq) { 9018700e3e7SMoni Shoua err = -ENOMEM; 9028700e3e7SMoni Shoua goto err1; 9038700e3e7SMoni Shoua } 9048700e3e7SMoni Shoua 9058700e3e7SMoni Shoua err = rxe_cq_from_init(rxe, cq, attr->cqe, attr->comp_vector, 9068700e3e7SMoni Shoua context, udata); 9078700e3e7SMoni Shoua if (err) 9088700e3e7SMoni Shoua goto err2; 9098700e3e7SMoni Shoua 9108700e3e7SMoni Shoua return &cq->ibcq; 9118700e3e7SMoni Shoua 9128700e3e7SMoni Shoua err2: 9138700e3e7SMoni Shoua rxe_drop_ref(cq); 9148700e3e7SMoni Shoua err1: 9158700e3e7SMoni Shoua return ERR_PTR(err); 9168700e3e7SMoni Shoua } 9178700e3e7SMoni Shoua 9188700e3e7SMoni Shoua static int rxe_destroy_cq(struct ib_cq *ibcq) 9198700e3e7SMoni Shoua { 9208700e3e7SMoni Shoua struct rxe_cq *cq = to_rcq(ibcq); 9218700e3e7SMoni Shoua 922bfc3ae05SAndrew Boyer rxe_cq_disable(cq); 923bfc3ae05SAndrew Boyer 9248700e3e7SMoni Shoua rxe_drop_ref(cq); 9258700e3e7SMoni Shoua return 0; 9268700e3e7SMoni Shoua } 9278700e3e7SMoni Shoua 9288700e3e7SMoni Shoua static int rxe_resize_cq(struct ib_cq *ibcq, int cqe, struct ib_udata *udata) 9298700e3e7SMoni Shoua { 9308700e3e7SMoni Shoua int err; 9318700e3e7SMoni Shoua struct rxe_cq *cq = to_rcq(ibcq); 9328700e3e7SMoni Shoua struct rxe_dev *rxe = to_rdev(ibcq->device); 9338700e3e7SMoni Shoua 934b92ec0feSJason Gunthorpe err = rxe_cq_chk_attr(rxe, cq, cqe, 0); 9358700e3e7SMoni Shoua if (err) 9368700e3e7SMoni Shoua goto err1; 9378700e3e7SMoni Shoua 9388700e3e7SMoni Shoua err = rxe_cq_resize_queue(cq, cqe, udata); 9398700e3e7SMoni Shoua if (err) 9408700e3e7SMoni Shoua goto err1; 9418700e3e7SMoni Shoua 9428700e3e7SMoni Shoua return 0; 9438700e3e7SMoni Shoua 9448700e3e7SMoni Shoua err1: 9458700e3e7SMoni Shoua return err; 9468700e3e7SMoni Shoua } 9478700e3e7SMoni Shoua 9488700e3e7SMoni Shoua static int rxe_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc) 9498700e3e7SMoni Shoua { 9508700e3e7SMoni Shoua int i; 9518700e3e7SMoni Shoua struct rxe_cq *cq = to_rcq(ibcq); 9528700e3e7SMoni Shoua struct rxe_cqe *cqe; 9538700e3e7SMoni Shoua unsigned long flags; 9548700e3e7SMoni Shoua 9558700e3e7SMoni Shoua spin_lock_irqsave(&cq->cq_lock, flags); 9568700e3e7SMoni Shoua for (i = 0; i < num_entries; i++) { 9578700e3e7SMoni Shoua cqe = queue_head(cq->queue); 9588700e3e7SMoni Shoua if (!cqe) 9598700e3e7SMoni Shoua break; 9608700e3e7SMoni Shoua 9618700e3e7SMoni Shoua memcpy(wc++, &cqe->ibwc, sizeof(*wc)); 9628700e3e7SMoni Shoua advance_consumer(cq->queue); 9638700e3e7SMoni Shoua } 9648700e3e7SMoni Shoua spin_unlock_irqrestore(&cq->cq_lock, flags); 9658700e3e7SMoni Shoua 9668700e3e7SMoni Shoua return i; 9678700e3e7SMoni Shoua } 9688700e3e7SMoni Shoua 9698700e3e7SMoni Shoua static int rxe_peek_cq(struct ib_cq *ibcq, int wc_cnt) 9708700e3e7SMoni Shoua { 9718700e3e7SMoni Shoua struct rxe_cq *cq = to_rcq(ibcq); 9728700e3e7SMoni Shoua int count = queue_count(cq->queue); 9738700e3e7SMoni Shoua 9748700e3e7SMoni Shoua return (count > wc_cnt) ? wc_cnt : count; 9758700e3e7SMoni Shoua } 9768700e3e7SMoni Shoua 9778700e3e7SMoni Shoua static int rxe_req_notify_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags flags) 9788700e3e7SMoni Shoua { 9798700e3e7SMoni Shoua struct rxe_cq *cq = to_rcq(ibcq); 980accacb8fSAndrew Boyer unsigned long irq_flags; 981accacb8fSAndrew Boyer int ret = 0; 9828700e3e7SMoni Shoua 983accacb8fSAndrew Boyer spin_lock_irqsave(&cq->cq_lock, irq_flags); 9848700e3e7SMoni Shoua if (cq->notify != IB_CQ_NEXT_COMP) 9858700e3e7SMoni Shoua cq->notify = flags & IB_CQ_SOLICITED_MASK; 9868700e3e7SMoni Shoua 987accacb8fSAndrew Boyer if ((flags & IB_CQ_REPORT_MISSED_EVENTS) && !queue_empty(cq->queue)) 988accacb8fSAndrew Boyer ret = 1; 989accacb8fSAndrew Boyer 990accacb8fSAndrew Boyer spin_unlock_irqrestore(&cq->cq_lock, irq_flags); 991accacb8fSAndrew Boyer 992accacb8fSAndrew Boyer return ret; 9938700e3e7SMoni Shoua } 9948700e3e7SMoni Shoua 9958700e3e7SMoni Shoua static struct ib_mr *rxe_get_dma_mr(struct ib_pd *ibpd, int access) 9968700e3e7SMoni Shoua { 9978700e3e7SMoni Shoua struct rxe_dev *rxe = to_rdev(ibpd->device); 9988700e3e7SMoni Shoua struct rxe_pd *pd = to_rpd(ibpd); 9998700e3e7SMoni Shoua struct rxe_mem *mr; 10008700e3e7SMoni Shoua int err; 10018700e3e7SMoni Shoua 10028700e3e7SMoni Shoua mr = rxe_alloc(&rxe->mr_pool); 10038700e3e7SMoni Shoua if (!mr) { 10048700e3e7SMoni Shoua err = -ENOMEM; 10058700e3e7SMoni Shoua goto err1; 10068700e3e7SMoni Shoua } 10078700e3e7SMoni Shoua 10088700e3e7SMoni Shoua rxe_add_index(mr); 10098700e3e7SMoni Shoua 10108700e3e7SMoni Shoua rxe_add_ref(pd); 10118700e3e7SMoni Shoua 10128700e3e7SMoni Shoua err = rxe_mem_init_dma(rxe, pd, access, mr); 10138700e3e7SMoni Shoua if (err) 10148700e3e7SMoni Shoua goto err2; 10158700e3e7SMoni Shoua 10168700e3e7SMoni Shoua return &mr->ibmr; 10178700e3e7SMoni Shoua 10188700e3e7SMoni Shoua err2: 10198700e3e7SMoni Shoua rxe_drop_ref(pd); 10208700e3e7SMoni Shoua rxe_drop_index(mr); 10218700e3e7SMoni Shoua rxe_drop_ref(mr); 10228700e3e7SMoni Shoua err1: 10238700e3e7SMoni Shoua return ERR_PTR(err); 10248700e3e7SMoni Shoua } 10258700e3e7SMoni Shoua 10268700e3e7SMoni Shoua static struct ib_mr *rxe_reg_user_mr(struct ib_pd *ibpd, 10278700e3e7SMoni Shoua u64 start, 10288700e3e7SMoni Shoua u64 length, 10298700e3e7SMoni Shoua u64 iova, 10308700e3e7SMoni Shoua int access, struct ib_udata *udata) 10318700e3e7SMoni Shoua { 10328700e3e7SMoni Shoua int err; 10338700e3e7SMoni Shoua struct rxe_dev *rxe = to_rdev(ibpd->device); 10348700e3e7SMoni Shoua struct rxe_pd *pd = to_rpd(ibpd); 10358700e3e7SMoni Shoua struct rxe_mem *mr; 10368700e3e7SMoni Shoua 10378700e3e7SMoni Shoua mr = rxe_alloc(&rxe->mr_pool); 10388700e3e7SMoni Shoua if (!mr) { 10398700e3e7SMoni Shoua err = -ENOMEM; 10408700e3e7SMoni Shoua goto err2; 10418700e3e7SMoni Shoua } 10428700e3e7SMoni Shoua 10438700e3e7SMoni Shoua rxe_add_index(mr); 10448700e3e7SMoni Shoua 10458700e3e7SMoni Shoua rxe_add_ref(pd); 10468700e3e7SMoni Shoua 10478700e3e7SMoni Shoua err = rxe_mem_init_user(rxe, pd, start, length, iova, 10488700e3e7SMoni Shoua access, udata, mr); 10498700e3e7SMoni Shoua if (err) 10508700e3e7SMoni Shoua goto err3; 10518700e3e7SMoni Shoua 10528700e3e7SMoni Shoua return &mr->ibmr; 10538700e3e7SMoni Shoua 10548700e3e7SMoni Shoua err3: 10558700e3e7SMoni Shoua rxe_drop_ref(pd); 10568700e3e7SMoni Shoua rxe_drop_index(mr); 10578700e3e7SMoni Shoua rxe_drop_ref(mr); 10588700e3e7SMoni Shoua err2: 10598700e3e7SMoni Shoua return ERR_PTR(err); 10608700e3e7SMoni Shoua } 10618700e3e7SMoni Shoua 10628700e3e7SMoni Shoua static int rxe_dereg_mr(struct ib_mr *ibmr) 10638700e3e7SMoni Shoua { 10648700e3e7SMoni Shoua struct rxe_mem *mr = to_rmr(ibmr); 10658700e3e7SMoni Shoua 10668700e3e7SMoni Shoua mr->state = RXE_MEM_STATE_ZOMBIE; 10678700e3e7SMoni Shoua rxe_drop_ref(mr->pd); 10688700e3e7SMoni Shoua rxe_drop_index(mr); 10698700e3e7SMoni Shoua rxe_drop_ref(mr); 10708700e3e7SMoni Shoua return 0; 10718700e3e7SMoni Shoua } 10728700e3e7SMoni Shoua 10738700e3e7SMoni Shoua static struct ib_mr *rxe_alloc_mr(struct ib_pd *ibpd, 10748700e3e7SMoni Shoua enum ib_mr_type mr_type, 10758700e3e7SMoni Shoua u32 max_num_sg) 10768700e3e7SMoni Shoua { 10778700e3e7SMoni Shoua struct rxe_dev *rxe = to_rdev(ibpd->device); 10788700e3e7SMoni Shoua struct rxe_pd *pd = to_rpd(ibpd); 10798700e3e7SMoni Shoua struct rxe_mem *mr; 10808700e3e7SMoni Shoua int err; 10818700e3e7SMoni Shoua 10828700e3e7SMoni Shoua if (mr_type != IB_MR_TYPE_MEM_REG) 10838700e3e7SMoni Shoua return ERR_PTR(-EINVAL); 10848700e3e7SMoni Shoua 10858700e3e7SMoni Shoua mr = rxe_alloc(&rxe->mr_pool); 10868700e3e7SMoni Shoua if (!mr) { 10878700e3e7SMoni Shoua err = -ENOMEM; 10888700e3e7SMoni Shoua goto err1; 10898700e3e7SMoni Shoua } 10908700e3e7SMoni Shoua 10918700e3e7SMoni Shoua rxe_add_index(mr); 10928700e3e7SMoni Shoua 10938700e3e7SMoni Shoua rxe_add_ref(pd); 10948700e3e7SMoni Shoua 10958700e3e7SMoni Shoua err = rxe_mem_init_fast(rxe, pd, max_num_sg, mr); 10968700e3e7SMoni Shoua if (err) 10978700e3e7SMoni Shoua goto err2; 10988700e3e7SMoni Shoua 10998700e3e7SMoni Shoua return &mr->ibmr; 11008700e3e7SMoni Shoua 11018700e3e7SMoni Shoua err2: 11028700e3e7SMoni Shoua rxe_drop_ref(pd); 11038700e3e7SMoni Shoua rxe_drop_index(mr); 11048700e3e7SMoni Shoua rxe_drop_ref(mr); 11058700e3e7SMoni Shoua err1: 11068700e3e7SMoni Shoua return ERR_PTR(err); 11078700e3e7SMoni Shoua } 11088700e3e7SMoni Shoua 11098700e3e7SMoni Shoua static int rxe_set_page(struct ib_mr *ibmr, u64 addr) 11108700e3e7SMoni Shoua { 11118700e3e7SMoni Shoua struct rxe_mem *mr = to_rmr(ibmr); 11128700e3e7SMoni Shoua struct rxe_map *map; 11138700e3e7SMoni Shoua struct rxe_phys_buf *buf; 11148700e3e7SMoni Shoua 11158700e3e7SMoni Shoua if (unlikely(mr->nbuf == mr->num_buf)) 11168700e3e7SMoni Shoua return -ENOMEM; 11178700e3e7SMoni Shoua 11188700e3e7SMoni Shoua map = mr->map[mr->nbuf / RXE_BUF_PER_MAP]; 11198700e3e7SMoni Shoua buf = &map->buf[mr->nbuf % RXE_BUF_PER_MAP]; 11208700e3e7SMoni Shoua 11218700e3e7SMoni Shoua buf->addr = addr; 11228700e3e7SMoni Shoua buf->size = ibmr->page_size; 11238700e3e7SMoni Shoua mr->nbuf++; 11248700e3e7SMoni Shoua 11258700e3e7SMoni Shoua return 0; 11268700e3e7SMoni Shoua } 11278700e3e7SMoni Shoua 1128e404f945SParav Pandit static int rxe_map_mr_sg(struct ib_mr *ibmr, struct scatterlist *sg, 1129e404f945SParav Pandit int sg_nents, unsigned int *sg_offset) 11308700e3e7SMoni Shoua { 11318700e3e7SMoni Shoua struct rxe_mem *mr = to_rmr(ibmr); 11328700e3e7SMoni Shoua int n; 11338700e3e7SMoni Shoua 11348700e3e7SMoni Shoua mr->nbuf = 0; 11358700e3e7SMoni Shoua 11368700e3e7SMoni Shoua n = ib_sg_to_pages(ibmr, sg, sg_nents, sg_offset, rxe_set_page); 11378700e3e7SMoni Shoua 11388700e3e7SMoni Shoua mr->va = ibmr->iova; 11398700e3e7SMoni Shoua mr->iova = ibmr->iova; 11408700e3e7SMoni Shoua mr->length = ibmr->length; 11418700e3e7SMoni Shoua mr->page_shift = ilog2(ibmr->page_size); 11428700e3e7SMoni Shoua mr->page_mask = ibmr->page_size - 1; 11438700e3e7SMoni Shoua mr->offset = mr->iova & mr->page_mask; 11448700e3e7SMoni Shoua 11458700e3e7SMoni Shoua return n; 11468700e3e7SMoni Shoua } 11478700e3e7SMoni Shoua 11488700e3e7SMoni Shoua static int rxe_attach_mcast(struct ib_qp *ibqp, union ib_gid *mgid, u16 mlid) 11498700e3e7SMoni Shoua { 11508700e3e7SMoni Shoua int err; 11518700e3e7SMoni Shoua struct rxe_dev *rxe = to_rdev(ibqp->device); 11528700e3e7SMoni Shoua struct rxe_qp *qp = to_rqp(ibqp); 11538700e3e7SMoni Shoua struct rxe_mc_grp *grp; 11548700e3e7SMoni Shoua 11558700e3e7SMoni Shoua /* takes a ref on grp if successful */ 11568700e3e7SMoni Shoua err = rxe_mcast_get_grp(rxe, mgid, &grp); 11578700e3e7SMoni Shoua if (err) 11588700e3e7SMoni Shoua return err; 11598700e3e7SMoni Shoua 11608700e3e7SMoni Shoua err = rxe_mcast_add_grp_elem(rxe, qp, grp); 11618700e3e7SMoni Shoua 11628700e3e7SMoni Shoua rxe_drop_ref(grp); 11638700e3e7SMoni Shoua return err; 11648700e3e7SMoni Shoua } 11658700e3e7SMoni Shoua 11668700e3e7SMoni Shoua static int rxe_detach_mcast(struct ib_qp *ibqp, union ib_gid *mgid, u16 mlid) 11678700e3e7SMoni Shoua { 11688700e3e7SMoni Shoua struct rxe_dev *rxe = to_rdev(ibqp->device); 11698700e3e7SMoni Shoua struct rxe_qp *qp = to_rqp(ibqp); 11708700e3e7SMoni Shoua 11718700e3e7SMoni Shoua return rxe_mcast_drop_grp_elem(rxe, qp, mgid); 11728700e3e7SMoni Shoua } 11738700e3e7SMoni Shoua 1174c05d2664SKamal Heib static ssize_t parent_show(struct device *device, 11758700e3e7SMoni Shoua struct device_attribute *attr, char *buf) 11768700e3e7SMoni Shoua { 11778700e3e7SMoni Shoua struct rxe_dev *rxe = container_of(device, struct rxe_dev, 11788700e3e7SMoni Shoua ib_dev.dev); 11798700e3e7SMoni Shoua 1180839f5ac0SBart Van Assche return snprintf(buf, 16, "%s\n", rxe_parent_name(rxe, 1)); 11818700e3e7SMoni Shoua } 11828700e3e7SMoni Shoua 1183c05d2664SKamal Heib static DEVICE_ATTR_RO(parent); 11848700e3e7SMoni Shoua 11858700e3e7SMoni Shoua static struct device_attribute *rxe_dev_attributes[] = { 11868700e3e7SMoni Shoua &dev_attr_parent, 11878700e3e7SMoni Shoua }; 11888700e3e7SMoni Shoua 11898700e3e7SMoni Shoua int rxe_register_device(struct rxe_dev *rxe) 11908700e3e7SMoni Shoua { 11918700e3e7SMoni Shoua int err; 11928700e3e7SMoni Shoua int i; 11938700e3e7SMoni Shoua struct ib_device *dev = &rxe->ib_dev; 11943192c53eSThomas Bogendoerfer struct crypto_shash *tfm; 11958700e3e7SMoni Shoua 11968700e3e7SMoni Shoua strlcpy(dev->name, "rxe%d", IB_DEVICE_NAME_MAX); 11978700e3e7SMoni Shoua strlcpy(dev->node_desc, "rxe", sizeof(dev->node_desc)); 11988700e3e7SMoni Shoua 11998700e3e7SMoni Shoua dev->owner = THIS_MODULE; 12008700e3e7SMoni Shoua dev->node_type = RDMA_NODE_IB_CA; 12018700e3e7SMoni Shoua dev->phys_port_cnt = 1; 120267cf3623SSagi Grimberg dev->num_comp_vectors = num_possible_cpus(); 120385e9f1dbSBart Van Assche dev->dev.parent = rxe_dma_device(rxe); 12048700e3e7SMoni Shoua dev->local_dma_lkey = 0; 12054d6f2859SYuval Shaia addrconf_addr_eui48((unsigned char *)&dev->node_guid, 12064d6f2859SYuval Shaia rxe->ndev->dev_addr); 12070bbb3b74SBart Van Assche dev->dev.dma_ops = &dma_virt_ops; 120856012e1cSyonatanc dma_coerce_mask_and_coherent(&dev->dev, 120956012e1cSyonatanc dma_get_required_mask(dev->dev.parent)); 12108700e3e7SMoni Shoua 12118700e3e7SMoni Shoua dev->uverbs_abi_ver = RXE_UVERBS_ABI_VERSION; 12128700e3e7SMoni Shoua dev->uverbs_cmd_mask = BIT_ULL(IB_USER_VERBS_CMD_GET_CONTEXT) 12138700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) 12148700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_QUERY_DEVICE) 12158700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_QUERY_PORT) 12168700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_ALLOC_PD) 12178700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_DEALLOC_PD) 12188700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_CREATE_SRQ) 12198700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_MODIFY_SRQ) 12208700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_QUERY_SRQ) 12218700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_DESTROY_SRQ) 12228700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_POST_SRQ_RECV) 12238700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_CREATE_QP) 12248700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_MODIFY_QP) 12258700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_QUERY_QP) 12268700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_DESTROY_QP) 12278700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_POST_SEND) 12288700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_POST_RECV) 12298700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_CREATE_CQ) 12308700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_RESIZE_CQ) 12318700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_DESTROY_CQ) 12328700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_POLL_CQ) 12338700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_PEEK_CQ) 12348700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) 12358700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_REG_MR) 12368700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_DEREG_MR) 12378700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_CREATE_AH) 12388700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_MODIFY_AH) 12398700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_QUERY_AH) 12408700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_DESTROY_AH) 12418700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_ATTACH_MCAST) 12428700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_DETACH_MCAST) 12438700e3e7SMoni Shoua ; 12448700e3e7SMoni Shoua 12458700e3e7SMoni Shoua dev->query_device = rxe_query_device; 12468700e3e7SMoni Shoua dev->modify_device = rxe_modify_device; 12478700e3e7SMoni Shoua dev->query_port = rxe_query_port; 12488700e3e7SMoni Shoua dev->modify_port = rxe_modify_port; 12498700e3e7SMoni Shoua dev->get_link_layer = rxe_get_link_layer; 12508700e3e7SMoni Shoua dev->query_gid = rxe_query_gid; 12518700e3e7SMoni Shoua dev->get_netdev = rxe_get_netdev; 12528700e3e7SMoni Shoua dev->add_gid = rxe_add_gid; 12538700e3e7SMoni Shoua dev->del_gid = rxe_del_gid; 12548700e3e7SMoni Shoua dev->query_pkey = rxe_query_pkey; 12558700e3e7SMoni Shoua dev->alloc_ucontext = rxe_alloc_ucontext; 12568700e3e7SMoni Shoua dev->dealloc_ucontext = rxe_dealloc_ucontext; 12578700e3e7SMoni Shoua dev->mmap = rxe_mmap; 12588700e3e7SMoni Shoua dev->get_port_immutable = rxe_port_immutable; 12598700e3e7SMoni Shoua dev->alloc_pd = rxe_alloc_pd; 12608700e3e7SMoni Shoua dev->dealloc_pd = rxe_dealloc_pd; 12618700e3e7SMoni Shoua dev->create_ah = rxe_create_ah; 12628700e3e7SMoni Shoua dev->modify_ah = rxe_modify_ah; 12638700e3e7SMoni Shoua dev->query_ah = rxe_query_ah; 12648700e3e7SMoni Shoua dev->destroy_ah = rxe_destroy_ah; 12658700e3e7SMoni Shoua dev->create_srq = rxe_create_srq; 12668700e3e7SMoni Shoua dev->modify_srq = rxe_modify_srq; 12678700e3e7SMoni Shoua dev->query_srq = rxe_query_srq; 12688700e3e7SMoni Shoua dev->destroy_srq = rxe_destroy_srq; 12698700e3e7SMoni Shoua dev->post_srq_recv = rxe_post_srq_recv; 12708700e3e7SMoni Shoua dev->create_qp = rxe_create_qp; 12718700e3e7SMoni Shoua dev->modify_qp = rxe_modify_qp; 12728700e3e7SMoni Shoua dev->query_qp = rxe_query_qp; 12738700e3e7SMoni Shoua dev->destroy_qp = rxe_destroy_qp; 12748700e3e7SMoni Shoua dev->post_send = rxe_post_send; 12758700e3e7SMoni Shoua dev->post_recv = rxe_post_recv; 12768700e3e7SMoni Shoua dev->create_cq = rxe_create_cq; 12778700e3e7SMoni Shoua dev->destroy_cq = rxe_destroy_cq; 12788700e3e7SMoni Shoua dev->resize_cq = rxe_resize_cq; 12798700e3e7SMoni Shoua dev->poll_cq = rxe_poll_cq; 12808700e3e7SMoni Shoua dev->peek_cq = rxe_peek_cq; 12818700e3e7SMoni Shoua dev->req_notify_cq = rxe_req_notify_cq; 12828700e3e7SMoni Shoua dev->get_dma_mr = rxe_get_dma_mr; 12838700e3e7SMoni Shoua dev->reg_user_mr = rxe_reg_user_mr; 12848700e3e7SMoni Shoua dev->dereg_mr = rxe_dereg_mr; 12858700e3e7SMoni Shoua dev->alloc_mr = rxe_alloc_mr; 12868700e3e7SMoni Shoua dev->map_mr_sg = rxe_map_mr_sg; 12878700e3e7SMoni Shoua dev->attach_mcast = rxe_attach_mcast; 12888700e3e7SMoni Shoua dev->detach_mcast = rxe_detach_mcast; 12890b1e5b99SYonatan Cohen dev->get_hw_stats = rxe_ib_get_hw_stats; 12900b1e5b99SYonatan Cohen dev->alloc_hw_stats = rxe_ib_alloc_hw_stats; 12918700e3e7SMoni Shoua 12923192c53eSThomas Bogendoerfer tfm = crypto_alloc_shash("crc32", 0, 0); 12933192c53eSThomas Bogendoerfer if (IS_ERR(tfm)) { 129427b0b832SColin Ian King pr_err("failed to allocate crc algorithm err:%ld\n", 12953192c53eSThomas Bogendoerfer PTR_ERR(tfm)); 12963192c53eSThomas Bogendoerfer return PTR_ERR(tfm); 1297cee2688eSyonatanc } 12983192c53eSThomas Bogendoerfer rxe->tfm = tfm; 1299cee2688eSyonatanc 13008700e3e7SMoni Shoua err = ib_register_device(dev, NULL); 13018700e3e7SMoni Shoua if (err) { 130261013828SKamal Heib pr_warn("%s failed with error %d\n", __func__, err); 13038700e3e7SMoni Shoua goto err1; 13048700e3e7SMoni Shoua } 13058700e3e7SMoni Shoua 13068700e3e7SMoni Shoua for (i = 0; i < ARRAY_SIZE(rxe_dev_attributes); ++i) { 13078700e3e7SMoni Shoua err = device_create_file(&dev->dev, rxe_dev_attributes[i]); 13088700e3e7SMoni Shoua if (err) { 130961013828SKamal Heib pr_warn("%s failed with error %d for attr number %d\n", 131061013828SKamal Heib __func__, err, i); 13118700e3e7SMoni Shoua goto err2; 13128700e3e7SMoni Shoua } 13138700e3e7SMoni Shoua } 13148700e3e7SMoni Shoua 13158700e3e7SMoni Shoua return 0; 13168700e3e7SMoni Shoua 13178700e3e7SMoni Shoua err2: 13188700e3e7SMoni Shoua ib_unregister_device(dev); 13198700e3e7SMoni Shoua err1: 1320cee2688eSyonatanc crypto_free_shash(rxe->tfm); 1321cee2688eSyonatanc 13228700e3e7SMoni Shoua return err; 13238700e3e7SMoni Shoua } 13248700e3e7SMoni Shoua 13258700e3e7SMoni Shoua int rxe_unregister_device(struct rxe_dev *rxe) 13268700e3e7SMoni Shoua { 13278700e3e7SMoni Shoua int i; 13288700e3e7SMoni Shoua struct ib_device *dev = &rxe->ib_dev; 13298700e3e7SMoni Shoua 13308700e3e7SMoni Shoua for (i = 0; i < ARRAY_SIZE(rxe_dev_attributes); ++i) 13318700e3e7SMoni Shoua device_remove_file(&dev->dev, rxe_dev_attributes[i]); 13328700e3e7SMoni Shoua 13338700e3e7SMoni Shoua ib_unregister_device(dev); 13348700e3e7SMoni Shoua 13358700e3e7SMoni Shoua return 0; 13368700e3e7SMoni Shoua } 1337