mirror of https://github.com/Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
311 lines
7.6 KiB
311 lines
7.6 KiB
// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB |
|
/* |
|
* Copyright (c) 2016 Mellanox Technologies Ltd. All rights reserved. |
|
* Copyright (c) 2015 System Fabric Works, Inc. All rights reserved. |
|
*/ |
|
|
|
#include <rdma/rdma_netlink.h> |
|
#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"); |
|
|
|
bool rxe_initialized; |
|
|
|
/* free resources for a rxe device all objects created for this device must |
|
* have been destroyed |
|
*/ |
|
void rxe_dealloc(struct ib_device *ib_dev) |
|
{ |
|
struct rxe_dev *rxe = container_of(ib_dev, struct rxe_dev, ib_dev); |
|
|
|
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); |
|
|
|
if (rxe->tfm) |
|
crypto_free_shash(rxe->tfm); |
|
} |
|
|
|
/* initialize rxe device parameters */ |
|
static void rxe_init_device_param(struct rxe_dev *rxe) |
|
{ |
|
rxe->max_inline_data = RXE_MAX_INLINE_DATA; |
|
|
|
rxe->attr.vendor_id = RXE_VENDOR_ID; |
|
rxe->attr.max_mr_size = RXE_MAX_MR_SIZE; |
|
rxe->attr.page_size_cap = RXE_PAGE_SIZE_CAP; |
|
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_send_sge = RXE_MAX_SGE; |
|
rxe->attr.max_recv_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_mw = RXE_MAX_MW; |
|
rxe->attr.max_pd = RXE_MAX_PD; |
|
rxe->attr.max_qp_rd_atom = RXE_MAX_QP_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.atomic_cap = IB_ATOMIC_HCA; |
|
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_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; |
|
addrconf_addr_eui48((unsigned char *)&rxe->attr.sys_image_guid, |
|
rxe->ndev->dev_addr); |
|
|
|
rxe->max_ucontext = RXE_MAX_UCONTEXT; |
|
} |
|
|
|
/* initialize port attributes */ |
|
static void rxe_init_port_param(struct rxe_port *port) |
|
{ |
|
port->attr.state = IB_PORT_DOWN; |
|
port->attr.max_mtu = IB_MTU_4096; |
|
port->attr.active_mtu = IB_MTU_256; |
|
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(IB_MTU_256); |
|
port->subnet_prefix = cpu_to_be64(RXE_PORT_SUBNET_PREFIX); |
|
} |
|
|
|
/* initialize port state, note IB convention that HCA ports are always |
|
* numbered from 1 |
|
*/ |
|
static void rxe_init_ports(struct rxe_dev *rxe) |
|
{ |
|
struct rxe_port *port = &rxe->port; |
|
|
|
rxe_init_port_param(port); |
|
addrconf_addr_eui48((unsigned char *)&port->port_guid, |
|
rxe->ndev->dev_addr); |
|
spin_lock_init(&port->port_lock); |
|
} |
|
|
|
/* 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); |
|
|
|
rxe_init_ports(rxe); |
|
|
|
err = rxe_init_pools(rxe); |
|
if (err) |
|
return err; |
|
|
|
/* init pending mmap list */ |
|
spin_lock_init(&rxe->mmap_offset_lock); |
|
spin_lock_init(&rxe->pending_lock); |
|
INIT_LIST_HEAD(&rxe->pending_mmaps); |
|
|
|
mutex_init(&rxe->usdev_lock); |
|
|
|
return 0; |
|
} |
|
|
|
void 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, IB_MTU_4096) : IB_MTU_256; |
|
|
|
port->attr.active_mtu = mtu; |
|
port->mtu_cap = ib_mtu_enum_to_int(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, const char *ibdev_name) |
|
{ |
|
int err; |
|
|
|
err = rxe_init(rxe); |
|
if (err) |
|
return err; |
|
|
|
rxe_set_mtu(rxe, mtu); |
|
|
|
return rxe_register_device(rxe, ibdev_name); |
|
} |
|
|
|
static int rxe_newlink(const char *ibdev_name, struct net_device *ndev) |
|
{ |
|
struct rxe_dev *exists; |
|
int err = 0; |
|
|
|
if (is_vlan_dev(ndev)) { |
|
pr_err("rxe creation allowed on top of a real device only\n"); |
|
err = -EPERM; |
|
goto err; |
|
} |
|
|
|
exists = rxe_get_dev_from_net(ndev); |
|
if (exists) { |
|
ib_device_put(&exists->ib_dev); |
|
pr_err("already configured on %s\n", ndev->name); |
|
err = -EEXIST; |
|
goto err; |
|
} |
|
|
|
err = rxe_net_add(ibdev_name, ndev); |
|
if (err) { |
|
pr_err("failed to add %s\n", ndev->name); |
|
goto err; |
|
} |
|
err: |
|
return err; |
|
} |
|
|
|
static struct rdma_link_ops rxe_link_ops = { |
|
.type = "rxe", |
|
.newlink = rxe_newlink, |
|
}; |
|
|
|
static int __init rxe_module_init(void) |
|
{ |
|
int err; |
|
|
|
err = rxe_net_init(); |
|
if (err) |
|
return err; |
|
|
|
rdma_link_register(&rxe_link_ops); |
|
rxe_initialized = true; |
|
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_initialized = false; |
|
pr_info("unloaded\n"); |
|
} |
|
|
|
late_initcall(rxe_module_init); |
|
module_exit(rxe_module_exit); |
|
|
|
MODULE_ALIAS_RDMA_LINK("rxe");
|
|
|