379 lines
9.8 KiB
C
379 lines
9.8 KiB
C
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/*
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* Copyright (c) 2016 Mellanox Technologies Ltd. All rights reserved.
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* Copyright (c) 2015 System Fabric Works, Inc. All rights reserved.
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenIB.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include <rdma/rdma_netlink.h>
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#include <net/addrconf.h>
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#include "rxe.h"
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#include "rxe_loc.h"
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MODULE_AUTHOR("Bob Pearson, Frank Zago, John Groves, Kamal Heib");
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MODULE_DESCRIPTION("Soft RDMA transport");
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MODULE_LICENSE("Dual BSD/GPL");
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/* free resources for all ports on a device */
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static void rxe_cleanup_ports(struct rxe_dev *rxe)
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{
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kfree(rxe->port.pkey_tbl);
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rxe->port.pkey_tbl = NULL;
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}
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/* free resources for a rxe device all objects created for this device must
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* have been destroyed
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*/
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void rxe_dealloc(struct ib_device *ib_dev)
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{
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struct rxe_dev *rxe = container_of(ib_dev, struct rxe_dev, ib_dev);
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rxe_pool_cleanup(&rxe->uc_pool);
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rxe_pool_cleanup(&rxe->pd_pool);
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rxe_pool_cleanup(&rxe->ah_pool);
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rxe_pool_cleanup(&rxe->srq_pool);
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rxe_pool_cleanup(&rxe->qp_pool);
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rxe_pool_cleanup(&rxe->cq_pool);
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rxe_pool_cleanup(&rxe->mr_pool);
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rxe_pool_cleanup(&rxe->mw_pool);
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rxe_pool_cleanup(&rxe->mc_grp_pool);
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rxe_pool_cleanup(&rxe->mc_elem_pool);
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rxe_cleanup_ports(rxe);
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if (rxe->tfm)
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crypto_free_shash(rxe->tfm);
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}
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/* initialize rxe device parameters */
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static void rxe_init_device_param(struct rxe_dev *rxe)
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{
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rxe->max_inline_data = RXE_MAX_INLINE_DATA;
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rxe->attr.fw_ver = RXE_FW_VER;
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rxe->attr.max_mr_size = RXE_MAX_MR_SIZE;
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rxe->attr.page_size_cap = RXE_PAGE_SIZE_CAP;
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rxe->attr.vendor_id = RXE_VENDOR_ID;
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rxe->attr.vendor_part_id = RXE_VENDOR_PART_ID;
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rxe->attr.hw_ver = RXE_HW_VER;
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rxe->attr.max_qp = RXE_MAX_QP;
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rxe->attr.max_qp_wr = RXE_MAX_QP_WR;
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rxe->attr.device_cap_flags = RXE_DEVICE_CAP_FLAGS;
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rxe->attr.max_send_sge = RXE_MAX_SGE;
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rxe->attr.max_recv_sge = RXE_MAX_SGE;
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rxe->attr.max_sge_rd = RXE_MAX_SGE_RD;
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rxe->attr.max_cq = RXE_MAX_CQ;
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rxe->attr.max_cqe = (1 << RXE_MAX_LOG_CQE) - 1;
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rxe->attr.max_mr = RXE_MAX_MR;
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rxe->attr.max_pd = RXE_MAX_PD;
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rxe->attr.max_qp_rd_atom = RXE_MAX_QP_RD_ATOM;
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rxe->attr.max_ee_rd_atom = RXE_MAX_EE_RD_ATOM;
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rxe->attr.max_res_rd_atom = RXE_MAX_RES_RD_ATOM;
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rxe->attr.max_qp_init_rd_atom = RXE_MAX_QP_INIT_RD_ATOM;
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rxe->attr.max_ee_init_rd_atom = RXE_MAX_EE_INIT_RD_ATOM;
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rxe->attr.atomic_cap = IB_ATOMIC_HCA;
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rxe->attr.max_ee = RXE_MAX_EE;
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rxe->attr.max_rdd = RXE_MAX_RDD;
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rxe->attr.max_mw = RXE_MAX_MW;
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rxe->attr.max_raw_ipv6_qp = RXE_MAX_RAW_IPV6_QP;
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rxe->attr.max_raw_ethy_qp = RXE_MAX_RAW_ETHY_QP;
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rxe->attr.max_mcast_grp = RXE_MAX_MCAST_GRP;
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rxe->attr.max_mcast_qp_attach = RXE_MAX_MCAST_QP_ATTACH;
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rxe->attr.max_total_mcast_qp_attach = RXE_MAX_TOT_MCAST_QP_ATTACH;
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rxe->attr.max_ah = RXE_MAX_AH;
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rxe->attr.max_fmr = RXE_MAX_FMR;
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rxe->attr.max_map_per_fmr = RXE_MAX_MAP_PER_FMR;
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rxe->attr.max_srq = RXE_MAX_SRQ;
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rxe->attr.max_srq_wr = RXE_MAX_SRQ_WR;
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rxe->attr.max_srq_sge = RXE_MAX_SRQ_SGE;
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rxe->attr.max_fast_reg_page_list_len = RXE_MAX_FMR_PAGE_LIST_LEN;
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rxe->attr.max_pkeys = RXE_MAX_PKEYS;
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rxe->attr.local_ca_ack_delay = RXE_LOCAL_CA_ACK_DELAY;
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rxe->max_ucontext = RXE_MAX_UCONTEXT;
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}
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/* initialize port attributes */
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static int rxe_init_port_param(struct rxe_port *port)
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{
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port->attr.state = IB_PORT_DOWN;
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port->attr.max_mtu = IB_MTU_4096;
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port->attr.active_mtu = IB_MTU_256;
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port->attr.gid_tbl_len = RXE_PORT_GID_TBL_LEN;
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port->attr.port_cap_flags = RXE_PORT_PORT_CAP_FLAGS;
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port->attr.max_msg_sz = RXE_PORT_MAX_MSG_SZ;
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port->attr.bad_pkey_cntr = RXE_PORT_BAD_PKEY_CNTR;
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port->attr.qkey_viol_cntr = RXE_PORT_QKEY_VIOL_CNTR;
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port->attr.pkey_tbl_len = RXE_PORT_PKEY_TBL_LEN;
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port->attr.lid = RXE_PORT_LID;
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port->attr.sm_lid = RXE_PORT_SM_LID;
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port->attr.lmc = RXE_PORT_LMC;
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port->attr.max_vl_num = RXE_PORT_MAX_VL_NUM;
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port->attr.sm_sl = RXE_PORT_SM_SL;
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port->attr.subnet_timeout = RXE_PORT_SUBNET_TIMEOUT;
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port->attr.init_type_reply = RXE_PORT_INIT_TYPE_REPLY;
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port->attr.active_width = RXE_PORT_ACTIVE_WIDTH;
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port->attr.active_speed = RXE_PORT_ACTIVE_SPEED;
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port->attr.phys_state = RXE_PORT_PHYS_STATE;
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port->mtu_cap = ib_mtu_enum_to_int(IB_MTU_256);
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port->subnet_prefix = cpu_to_be64(RXE_PORT_SUBNET_PREFIX);
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return 0;
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}
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/* initialize port state, note IB convention that HCA ports are always
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* numbered from 1
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*/
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static int rxe_init_ports(struct rxe_dev *rxe)
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{
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struct rxe_port *port = &rxe->port;
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rxe_init_port_param(port);
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if (!port->attr.pkey_tbl_len || !port->attr.gid_tbl_len)
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return -EINVAL;
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port->pkey_tbl = kcalloc(port->attr.pkey_tbl_len,
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sizeof(*port->pkey_tbl), GFP_KERNEL);
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if (!port->pkey_tbl)
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return -ENOMEM;
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port->pkey_tbl[0] = 0xffff;
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addrconf_addr_eui48((unsigned char *)&port->port_guid,
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rxe->ndev->dev_addr);
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spin_lock_init(&port->port_lock);
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return 0;
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}
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/* init pools of managed objects */
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static int rxe_init_pools(struct rxe_dev *rxe)
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{
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int err;
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err = rxe_pool_init(rxe, &rxe->uc_pool, RXE_TYPE_UC,
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rxe->max_ucontext);
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if (err)
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goto err1;
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err = rxe_pool_init(rxe, &rxe->pd_pool, RXE_TYPE_PD,
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rxe->attr.max_pd);
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if (err)
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goto err2;
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err = rxe_pool_init(rxe, &rxe->ah_pool, RXE_TYPE_AH,
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rxe->attr.max_ah);
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if (err)
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goto err3;
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err = rxe_pool_init(rxe, &rxe->srq_pool, RXE_TYPE_SRQ,
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rxe->attr.max_srq);
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if (err)
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goto err4;
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err = rxe_pool_init(rxe, &rxe->qp_pool, RXE_TYPE_QP,
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rxe->attr.max_qp);
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if (err)
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goto err5;
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err = rxe_pool_init(rxe, &rxe->cq_pool, RXE_TYPE_CQ,
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rxe->attr.max_cq);
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if (err)
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goto err6;
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err = rxe_pool_init(rxe, &rxe->mr_pool, RXE_TYPE_MR,
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rxe->attr.max_mr);
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if (err)
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goto err7;
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err = rxe_pool_init(rxe, &rxe->mw_pool, RXE_TYPE_MW,
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rxe->attr.max_mw);
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if (err)
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goto err8;
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err = rxe_pool_init(rxe, &rxe->mc_grp_pool, RXE_TYPE_MC_GRP,
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rxe->attr.max_mcast_grp);
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if (err)
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goto err9;
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err = rxe_pool_init(rxe, &rxe->mc_elem_pool, RXE_TYPE_MC_ELEM,
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rxe->attr.max_total_mcast_qp_attach);
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if (err)
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goto err10;
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return 0;
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err10:
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rxe_pool_cleanup(&rxe->mc_grp_pool);
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err9:
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rxe_pool_cleanup(&rxe->mw_pool);
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err8:
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rxe_pool_cleanup(&rxe->mr_pool);
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err7:
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rxe_pool_cleanup(&rxe->cq_pool);
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err6:
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rxe_pool_cleanup(&rxe->qp_pool);
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err5:
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rxe_pool_cleanup(&rxe->srq_pool);
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err4:
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rxe_pool_cleanup(&rxe->ah_pool);
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err3:
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rxe_pool_cleanup(&rxe->pd_pool);
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err2:
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rxe_pool_cleanup(&rxe->uc_pool);
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err1:
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return err;
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}
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/* initialize rxe device state */
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static int rxe_init(struct rxe_dev *rxe)
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{
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int err;
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/* init default device parameters */
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rxe_init_device_param(rxe);
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err = rxe_init_ports(rxe);
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if (err)
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goto err1;
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err = rxe_init_pools(rxe);
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if (err)
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goto err2;
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/* init pending mmap list */
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spin_lock_init(&rxe->mmap_offset_lock);
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spin_lock_init(&rxe->pending_lock);
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INIT_LIST_HEAD(&rxe->pending_mmaps);
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mutex_init(&rxe->usdev_lock);
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return 0;
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err2:
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rxe_cleanup_ports(rxe);
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err1:
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return err;
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}
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void rxe_set_mtu(struct rxe_dev *rxe, unsigned int ndev_mtu)
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{
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struct rxe_port *port = &rxe->port;
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enum ib_mtu mtu;
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mtu = eth_mtu_int_to_enum(ndev_mtu);
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/* Make sure that new MTU in range */
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mtu = mtu ? min_t(enum ib_mtu, mtu, IB_MTU_4096) : IB_MTU_256;
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port->attr.active_mtu = mtu;
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port->mtu_cap = ib_mtu_enum_to_int(mtu);
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}
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/* called by ifc layer to create new rxe device.
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* The caller should allocate memory for rxe by calling ib_alloc_device.
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*/
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int rxe_add(struct rxe_dev *rxe, unsigned int mtu, const char *ibdev_name)
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{
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int err;
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err = rxe_init(rxe);
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if (err)
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return err;
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rxe_set_mtu(rxe, mtu);
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return rxe_register_device(rxe, ibdev_name);
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}
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static int rxe_newlink(const char *ibdev_name, struct net_device *ndev)
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{
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struct rxe_dev *exists;
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int err = 0;
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exists = rxe_get_dev_from_net(ndev);
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if (exists) {
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ib_device_put(&exists->ib_dev);
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pr_err("already configured on %s\n", ndev->name);
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err = -EEXIST;
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goto err;
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}
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err = rxe_net_add(ibdev_name, ndev);
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if (err) {
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pr_err("failed to add %s\n", ndev->name);
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goto err;
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}
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err:
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return err;
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}
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static struct rdma_link_ops rxe_link_ops = {
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.type = "rxe",
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|
|
.newlink = rxe_newlink,
|
||
|
|
};
|
||
|
|
|
||
|
|
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;
|
||
|
|
|
||
|
|
rdma_link_register(&rxe_link_ops);
|
||
|
|
pr_info("loaded\n");
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void __exit rxe_module_exit(void)
|
||
|
|
{
|
||
|
|
rdma_link_unregister(&rxe_link_ops);
|
||
|
|
ib_unregister_driver(RDMA_DRIVER_RXE);
|
||
|
|
rxe_net_exit();
|
||
|
|
rxe_cache_exit();
|
||
|
|
|
||
|
|
pr_info("unloaded\n");
|
||
|
|
}
|
||
|
|
|
||
|
|
late_initcall(rxe_module_init);
|
||
|
|
module_exit(rxe_module_exit);
|
||
|
|
|
||
|
|
MODULE_ALIAS_RDMA_LINK("rxe");
|