/* * Copyright (c) 2016 Mellanox Technologies Ltd. All rights reserved. * Copyright (c) 2015 System Fabric Works, Inc. All rights reserved. * * This software is available to you under a choice of one of two * licenses. You may choose to be licensed under the terms of the GNU * General Public License (GPL) Version 2, available from the file * COPYING in the main directory of this source tree, or the * OpenIB.org BSD license below: * * Redistribution and use in source and binary forms, with or * without modification, are permitted provided that the following * conditions are met: * * - Redistributions of source code must retain the above * copyright notice, this list of conditions and the following * disclaimer. * * - Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials * provided with the distribution. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ #include <net/addrconf.h> #include "rxe.h" #include "rxe_loc.h" MODULE_AUTHOR("Bob Pearson, Frank Zago, John Groves, Kamal Heib"); MODULE_DESCRIPTION("Soft RDMA transport"); MODULE_LICENSE("Dual BSD/GPL"); MODULE_VERSION("0.2"); /* free resources for all ports on a device */ static void rxe_cleanup_ports(struct rxe_dev *rxe) { kfree(rxe->port.pkey_tbl); rxe->port.pkey_tbl = NULL; } /* free resources for a rxe device all objects created for this device must * have been destroyed */ static void rxe_cleanup(struct rxe_dev *rxe) { rxe_pool_cleanup(&rxe->uc_pool); rxe_pool_cleanup(&rxe->pd_pool); rxe_pool_cleanup(&rxe->ah_pool); rxe_pool_cleanup(&rxe->srq_pool); rxe_pool_cleanup(&rxe->qp_pool); rxe_pool_cleanup(&rxe->cq_pool); rxe_pool_cleanup(&rxe->mr_pool); rxe_pool_cleanup(&rxe->mw_pool); rxe_pool_cleanup(&rxe->mc_grp_pool); rxe_pool_cleanup(&rxe->mc_elem_pool); rxe_cleanup_ports(rxe); crypto_free_shash(rxe->tfm); } /* called when all references have been dropped */ void rxe_release(struct kref *kref) { struct rxe_dev *rxe = container_of(kref, struct rxe_dev, ref_cnt); rxe_cleanup(rxe); ib_dealloc_device(&rxe->ib_dev); } void rxe_dev_put(struct rxe_dev *rxe) { kref_put(&rxe->ref_cnt, rxe_release); } EXPORT_SYMBOL_GPL(rxe_dev_put); /* initialize rxe device parameters */ static int rxe_init_device_param(struct rxe_dev *rxe) { rxe->max_inline_data = RXE_MAX_INLINE_DATA; rxe->attr.fw_ver = RXE_FW_VER; rxe->attr.max_mr_size = RXE_MAX_MR_SIZE; rxe->attr.page_size_cap = RXE_PAGE_SIZE_CAP; rxe->attr.vendor_id = RXE_VENDOR_ID; rxe->attr.vendor_part_id = RXE_VENDOR_PART_ID; rxe->attr.hw_ver = RXE_HW_VER; rxe->attr.max_qp = RXE_MAX_QP; rxe->attr.max_qp_wr = RXE_MAX_QP_WR; rxe->attr.device_cap_flags = RXE_DEVICE_CAP_FLAGS; rxe->attr.max_sge = RXE_MAX_SGE; rxe->attr.max_sge_rd = RXE_MAX_SGE_RD; rxe->attr.max_cq = RXE_MAX_CQ; rxe->attr.max_cqe = (1 << RXE_MAX_LOG_CQE) - 1; rxe->attr.max_mr = RXE_MAX_MR; rxe->attr.max_pd = RXE_MAX_PD; rxe->attr.max_qp_rd_atom = RXE_MAX_QP_RD_ATOM; rxe->attr.max_ee_rd_atom = RXE_MAX_EE_RD_ATOM; rxe->attr.max_res_rd_atom = RXE_MAX_RES_RD_ATOM; rxe->attr.max_qp_init_rd_atom = RXE_MAX_QP_INIT_RD_ATOM; rxe->attr.max_ee_init_rd_atom = RXE_MAX_EE_INIT_RD_ATOM; rxe->attr.atomic_cap = RXE_ATOMIC_CAP; rxe->attr.max_ee = RXE_MAX_EE; rxe->attr.max_rdd = RXE_MAX_RDD; rxe->attr.max_mw = RXE_MAX_MW; rxe->attr.max_raw_ipv6_qp = RXE_MAX_RAW_IPV6_QP; rxe->attr.max_raw_ethy_qp = RXE_MAX_RAW_ETHY_QP; rxe->attr.max_mcast_grp = RXE_MAX_MCAST_GRP; rxe->attr.max_mcast_qp_attach = RXE_MAX_MCAST_QP_ATTACH; rxe->attr.max_total_mcast_qp_attach = RXE_MAX_TOT_MCAST_QP_ATTACH; rxe->attr.max_ah = RXE_MAX_AH; rxe->attr.max_fmr = RXE_MAX_FMR; rxe->attr.max_map_per_fmr = RXE_MAX_MAP_PER_FMR; rxe->attr.max_srq = RXE_MAX_SRQ; rxe->attr.max_srq_wr = RXE_MAX_SRQ_WR; rxe->attr.max_srq_sge = RXE_MAX_SRQ_SGE; rxe->attr.max_fast_reg_page_list_len = RXE_MAX_FMR_PAGE_LIST_LEN; rxe->attr.max_pkeys = RXE_MAX_PKEYS; rxe->attr.local_ca_ack_delay = RXE_LOCAL_CA_ACK_DELAY; rxe->max_ucontext = RXE_MAX_UCONTEXT; return 0; } /* initialize port attributes */ static int rxe_init_port_param(struct rxe_port *port) { port->attr.state = RXE_PORT_STATE; port->attr.max_mtu = RXE_PORT_MAX_MTU; port->attr.active_mtu = RXE_PORT_ACTIVE_MTU; port->attr.gid_tbl_len = RXE_PORT_GID_TBL_LEN; port->attr.port_cap_flags = RXE_PORT_PORT_CAP_FLAGS; port->attr.max_msg_sz = RXE_PORT_MAX_MSG_SZ; port->attr.bad_pkey_cntr = RXE_PORT_BAD_PKEY_CNTR; port->attr.qkey_viol_cntr = RXE_PORT_QKEY_VIOL_CNTR; port->attr.pkey_tbl_len = RXE_PORT_PKEY_TBL_LEN; port->attr.lid = RXE_PORT_LID; port->attr.sm_lid = RXE_PORT_SM_LID; port->attr.lmc = RXE_PORT_LMC; port->attr.max_vl_num = RXE_PORT_MAX_VL_NUM; port->attr.sm_sl = RXE_PORT_SM_SL; port->attr.subnet_timeout = RXE_PORT_SUBNET_TIMEOUT; port->attr.init_type_reply = RXE_PORT_INIT_TYPE_REPLY; port->attr.active_width = RXE_PORT_ACTIVE_WIDTH; port->attr.active_speed = RXE_PORT_ACTIVE_SPEED; port->attr.phys_state = RXE_PORT_PHYS_STATE; port->mtu_cap = ib_mtu_enum_to_int(RXE_PORT_ACTIVE_MTU); port->subnet_prefix = cpu_to_be64(RXE_PORT_SUBNET_PREFIX); return 0; } /* initialize port state, note IB convention that HCA ports are always * numbered from 1 */ static int rxe_init_ports(struct rxe_dev *rxe) { struct rxe_port *port = &rxe->port; rxe_init_port_param(port); if (!port->attr.pkey_tbl_len || !port->attr.gid_tbl_len) return -EINVAL; port->pkey_tbl = kcalloc(port->attr.pkey_tbl_len, sizeof(*port->pkey_tbl), GFP_KERNEL); if (!port->pkey_tbl) return -ENOMEM; port->pkey_tbl[0] = 0xffff; addrconf_addr_eui48((unsigned char *)&port->port_guid, rxe->ndev->dev_addr); spin_lock_init(&port->port_lock); return 0; } /* init pools of managed objects */ static int rxe_init_pools(struct rxe_dev *rxe) { int err; err = rxe_pool_init(rxe, &rxe->uc_pool, RXE_TYPE_UC, rxe->max_ucontext); if (err) goto err1; err = rxe_pool_init(rxe, &rxe->pd_pool, RXE_TYPE_PD, rxe->attr.max_pd); if (err) goto err2; err = rxe_pool_init(rxe, &rxe->ah_pool, RXE_TYPE_AH, rxe->attr.max_ah); if (err) goto err3; err = rxe_pool_init(rxe, &rxe->srq_pool, RXE_TYPE_SRQ, rxe->attr.max_srq); if (err) goto err4; err = rxe_pool_init(rxe, &rxe->qp_pool, RXE_TYPE_QP, rxe->attr.max_qp); if (err) goto err5; err = rxe_pool_init(rxe, &rxe->cq_pool, RXE_TYPE_CQ, rxe->attr.max_cq); if (err) goto err6; err = rxe_pool_init(rxe, &rxe->mr_pool, RXE_TYPE_MR, rxe->attr.max_mr); if (err) goto err7; err = rxe_pool_init(rxe, &rxe->mw_pool, RXE_TYPE_MW, rxe->attr.max_mw); if (err) goto err8; err = rxe_pool_init(rxe, &rxe->mc_grp_pool, RXE_TYPE_MC_GRP, rxe->attr.max_mcast_grp); if (err) goto err9; err = rxe_pool_init(rxe, &rxe->mc_elem_pool, RXE_TYPE_MC_ELEM, rxe->attr.max_total_mcast_qp_attach); if (err) goto err10; return 0; err10: rxe_pool_cleanup(&rxe->mc_grp_pool); err9: rxe_pool_cleanup(&rxe->mw_pool); err8: rxe_pool_cleanup(&rxe->mr_pool); err7: rxe_pool_cleanup(&rxe->cq_pool); err6: rxe_pool_cleanup(&rxe->qp_pool); err5: rxe_pool_cleanup(&rxe->srq_pool); err4: rxe_pool_cleanup(&rxe->ah_pool); err3: rxe_pool_cleanup(&rxe->pd_pool); err2: rxe_pool_cleanup(&rxe->uc_pool); err1: return err; } /* initialize rxe device state */ static int rxe_init(struct rxe_dev *rxe) { int err; /* init default device parameters */ rxe_init_device_param(rxe); err = rxe_init_ports(rxe); if (err) goto err1; err = rxe_init_pools(rxe); if (err) goto err2; /* init pending mmap list */ spin_lock_init(&rxe->mmap_offset_lock); spin_lock_init(&rxe->pending_lock); INIT_LIST_HEAD(&rxe->pending_mmaps); INIT_LIST_HEAD(&rxe->list); mutex_init(&rxe->usdev_lock); return 0; err2: rxe_cleanup_ports(rxe); err1: return err; } int rxe_set_mtu(struct rxe_dev *rxe, unsigned int ndev_mtu) { struct rxe_port *port = &rxe->port; enum ib_mtu mtu; mtu = eth_mtu_int_to_enum(ndev_mtu); /* Make sure that new MTU in range */ mtu = mtu ? min_t(enum ib_mtu, mtu, RXE_PORT_MAX_MTU) : IB_MTU_256; port->attr.active_mtu = mtu; port->mtu_cap = ib_mtu_enum_to_int(mtu); return 0; } EXPORT_SYMBOL(rxe_set_mtu); /* called by ifc layer to create new rxe device. * The caller should allocate memory for rxe by calling ib_alloc_device. */ int rxe_add(struct rxe_dev *rxe, unsigned int mtu) { int err; kref_init(&rxe->ref_cnt); err = rxe_init(rxe); if (err) goto err1; err = rxe_set_mtu(rxe, mtu); if (err) goto err1; err = rxe_register_device(rxe); if (err) goto err1; return 0; err1: rxe_dev_put(rxe); return err; } EXPORT_SYMBOL(rxe_add); /* called by the ifc layer to remove a device */ void rxe_remove(struct rxe_dev *rxe) { rxe_unregister_device(rxe); rxe_dev_put(rxe); } EXPORT_SYMBOL(rxe_remove); static int __init rxe_module_init(void) { int err; /* initialize slab caches for managed objects */ err = rxe_cache_init(); if (err) { pr_err("unable to init object pools\n"); return err; } err = rxe_net_init(); if (err) return err; pr_info("loaded\n"); return 0; } static void __exit rxe_module_exit(void) { rxe_remove_all(); rxe_net_exit(); rxe_cache_exit(); pr_info("unloaded\n"); } late_initcall(rxe_module_init); module_exit(rxe_module_exit);