2 * Copyright (c) 2016 Mellanox Technologies Ltd. All rights reserved.
3 * Copyright (c) 2015 System Fabric Works, Inc. All rights reserved.
5 * This software is available to you under a choice of one of two
6 * licenses. You may choose to be licensed under the terms of the GNU
7 * General Public License (GPL) Version 2, available from the file
8 * COPYING in the main directory of this source tree, or the
9 * OpenIB.org BSD license below:
11 * Redistribution and use in source and binary forms, with or
12 * without modification, are permitted provided that the following
15 * - Redistributions of source code must retain the above
16 * copyright notice, this list of conditions and the following
19 * - Redistributions in binary form must reproduce the above
20 * copyright notice, this list of conditions and the following
21 * disclaimer in the documentation and/or other materials
22 * provided with the distribution.
24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
28 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
29 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
34 #include <net/addrconf.h>
38 MODULE_AUTHOR("Bob Pearson, Frank Zago, John Groves, Kamal Heib");
39 MODULE_DESCRIPTION("Soft RDMA transport");
40 MODULE_LICENSE("Dual BSD/GPL");
42 /* free resources for all ports on a device */
43 static void rxe_cleanup_ports(struct rxe_dev *rxe)
45 kfree(rxe->port.pkey_tbl);
46 rxe->port.pkey_tbl = NULL;
50 /* free resources for a rxe device all objects created for this device must
53 static void rxe_cleanup(struct rxe_dev *rxe)
55 rxe_pool_cleanup(&rxe->uc_pool);
56 rxe_pool_cleanup(&rxe->pd_pool);
57 rxe_pool_cleanup(&rxe->ah_pool);
58 rxe_pool_cleanup(&rxe->srq_pool);
59 rxe_pool_cleanup(&rxe->qp_pool);
60 rxe_pool_cleanup(&rxe->cq_pool);
61 rxe_pool_cleanup(&rxe->mr_pool);
62 rxe_pool_cleanup(&rxe->mw_pool);
63 rxe_pool_cleanup(&rxe->mc_grp_pool);
64 rxe_pool_cleanup(&rxe->mc_elem_pool);
66 rxe_cleanup_ports(rxe);
68 crypto_free_shash(rxe->tfm);
71 /* called when all references have been dropped */
72 void rxe_release(struct kref *kref)
74 struct rxe_dev *rxe = container_of(kref, struct rxe_dev, ref_cnt);
77 ib_dealloc_device(&rxe->ib_dev);
80 /* initialize rxe device parameters */
81 static void rxe_init_device_param(struct rxe_dev *rxe)
83 rxe->max_inline_data = RXE_MAX_INLINE_DATA;
85 rxe->attr.fw_ver = RXE_FW_VER;
86 rxe->attr.max_mr_size = RXE_MAX_MR_SIZE;
87 rxe->attr.page_size_cap = RXE_PAGE_SIZE_CAP;
88 rxe->attr.vendor_id = RXE_VENDOR_ID;
89 rxe->attr.vendor_part_id = RXE_VENDOR_PART_ID;
90 rxe->attr.hw_ver = RXE_HW_VER;
91 rxe->attr.max_qp = RXE_MAX_QP;
92 rxe->attr.max_qp_wr = RXE_MAX_QP_WR;
93 rxe->attr.device_cap_flags = RXE_DEVICE_CAP_FLAGS;
94 rxe->attr.max_send_sge = RXE_MAX_SGE;
95 rxe->attr.max_recv_sge = RXE_MAX_SGE;
96 rxe->attr.max_sge_rd = RXE_MAX_SGE_RD;
97 rxe->attr.max_cq = RXE_MAX_CQ;
98 rxe->attr.max_cqe = (1 << RXE_MAX_LOG_CQE) - 1;
99 rxe->attr.max_mr = RXE_MAX_MR;
100 rxe->attr.max_pd = RXE_MAX_PD;
101 rxe->attr.max_qp_rd_atom = RXE_MAX_QP_RD_ATOM;
102 rxe->attr.max_ee_rd_atom = RXE_MAX_EE_RD_ATOM;
103 rxe->attr.max_res_rd_atom = RXE_MAX_RES_RD_ATOM;
104 rxe->attr.max_qp_init_rd_atom = RXE_MAX_QP_INIT_RD_ATOM;
105 rxe->attr.max_ee_init_rd_atom = RXE_MAX_EE_INIT_RD_ATOM;
106 rxe->attr.atomic_cap = IB_ATOMIC_HCA;
107 rxe->attr.max_ee = RXE_MAX_EE;
108 rxe->attr.max_rdd = RXE_MAX_RDD;
109 rxe->attr.max_mw = RXE_MAX_MW;
110 rxe->attr.max_raw_ipv6_qp = RXE_MAX_RAW_IPV6_QP;
111 rxe->attr.max_raw_ethy_qp = RXE_MAX_RAW_ETHY_QP;
112 rxe->attr.max_mcast_grp = RXE_MAX_MCAST_GRP;
113 rxe->attr.max_mcast_qp_attach = RXE_MAX_MCAST_QP_ATTACH;
114 rxe->attr.max_total_mcast_qp_attach = RXE_MAX_TOT_MCAST_QP_ATTACH;
115 rxe->attr.max_ah = RXE_MAX_AH;
116 rxe->attr.max_fmr = RXE_MAX_FMR;
117 rxe->attr.max_map_per_fmr = RXE_MAX_MAP_PER_FMR;
118 rxe->attr.max_srq = RXE_MAX_SRQ;
119 rxe->attr.max_srq_wr = RXE_MAX_SRQ_WR;
120 rxe->attr.max_srq_sge = RXE_MAX_SRQ_SGE;
121 rxe->attr.max_fast_reg_page_list_len = RXE_MAX_FMR_PAGE_LIST_LEN;
122 rxe->attr.max_pkeys = RXE_MAX_PKEYS;
123 rxe->attr.local_ca_ack_delay = RXE_LOCAL_CA_ACK_DELAY;
125 rxe->max_ucontext = RXE_MAX_UCONTEXT;
128 /* initialize port attributes */
129 static int rxe_init_port_param(struct rxe_port *port)
131 port->attr.state = IB_PORT_DOWN;
132 port->attr.max_mtu = IB_MTU_4096;
133 port->attr.active_mtu = IB_MTU_256;
134 port->attr.gid_tbl_len = RXE_PORT_GID_TBL_LEN;
135 port->attr.port_cap_flags = RXE_PORT_PORT_CAP_FLAGS;
136 port->attr.max_msg_sz = RXE_PORT_MAX_MSG_SZ;
137 port->attr.bad_pkey_cntr = RXE_PORT_BAD_PKEY_CNTR;
138 port->attr.qkey_viol_cntr = RXE_PORT_QKEY_VIOL_CNTR;
139 port->attr.pkey_tbl_len = RXE_PORT_PKEY_TBL_LEN;
140 port->attr.lid = RXE_PORT_LID;
141 port->attr.sm_lid = RXE_PORT_SM_LID;
142 port->attr.lmc = RXE_PORT_LMC;
143 port->attr.max_vl_num = RXE_PORT_MAX_VL_NUM;
144 port->attr.sm_sl = RXE_PORT_SM_SL;
145 port->attr.subnet_timeout = RXE_PORT_SUBNET_TIMEOUT;
146 port->attr.init_type_reply = RXE_PORT_INIT_TYPE_REPLY;
147 port->attr.active_width = RXE_PORT_ACTIVE_WIDTH;
148 port->attr.active_speed = RXE_PORT_ACTIVE_SPEED;
149 port->attr.phys_state = RXE_PORT_PHYS_STATE;
150 port->mtu_cap = ib_mtu_enum_to_int(IB_MTU_256);
151 port->subnet_prefix = cpu_to_be64(RXE_PORT_SUBNET_PREFIX);
156 /* initialize port state, note IB convention that HCA ports are always
159 static int rxe_init_ports(struct rxe_dev *rxe)
161 struct rxe_port *port = &rxe->port;
163 rxe_init_port_param(port);
165 if (!port->attr.pkey_tbl_len || !port->attr.gid_tbl_len)
168 port->pkey_tbl = kcalloc(port->attr.pkey_tbl_len,
169 sizeof(*port->pkey_tbl), GFP_KERNEL);
174 port->pkey_tbl[0] = 0xffff;
175 addrconf_addr_eui48((unsigned char *)&port->port_guid,
176 rxe->ndev->dev_addr);
178 spin_lock_init(&port->port_lock);
183 /* init pools of managed objects */
184 static int rxe_init_pools(struct rxe_dev *rxe)
188 err = rxe_pool_init(rxe, &rxe->uc_pool, RXE_TYPE_UC,
193 err = rxe_pool_init(rxe, &rxe->pd_pool, RXE_TYPE_PD,
198 err = rxe_pool_init(rxe, &rxe->ah_pool, RXE_TYPE_AH,
203 err = rxe_pool_init(rxe, &rxe->srq_pool, RXE_TYPE_SRQ,
208 err = rxe_pool_init(rxe, &rxe->qp_pool, RXE_TYPE_QP,
213 err = rxe_pool_init(rxe, &rxe->cq_pool, RXE_TYPE_CQ,
218 err = rxe_pool_init(rxe, &rxe->mr_pool, RXE_TYPE_MR,
223 err = rxe_pool_init(rxe, &rxe->mw_pool, RXE_TYPE_MW,
228 err = rxe_pool_init(rxe, &rxe->mc_grp_pool, RXE_TYPE_MC_GRP,
229 rxe->attr.max_mcast_grp);
233 err = rxe_pool_init(rxe, &rxe->mc_elem_pool, RXE_TYPE_MC_ELEM,
234 rxe->attr.max_total_mcast_qp_attach);
241 rxe_pool_cleanup(&rxe->mc_grp_pool);
243 rxe_pool_cleanup(&rxe->mw_pool);
245 rxe_pool_cleanup(&rxe->mr_pool);
247 rxe_pool_cleanup(&rxe->cq_pool);
249 rxe_pool_cleanup(&rxe->qp_pool);
251 rxe_pool_cleanup(&rxe->srq_pool);
253 rxe_pool_cleanup(&rxe->ah_pool);
255 rxe_pool_cleanup(&rxe->pd_pool);
257 rxe_pool_cleanup(&rxe->uc_pool);
262 /* initialize rxe device state */
263 static int rxe_init(struct rxe_dev *rxe)
267 /* init default device parameters */
268 rxe_init_device_param(rxe);
270 err = rxe_init_ports(rxe);
274 err = rxe_init_pools(rxe);
278 /* init pending mmap list */
279 spin_lock_init(&rxe->mmap_offset_lock);
280 spin_lock_init(&rxe->pending_lock);
281 INIT_LIST_HEAD(&rxe->pending_mmaps);
282 INIT_LIST_HEAD(&rxe->list);
284 mutex_init(&rxe->usdev_lock);
289 rxe_cleanup_ports(rxe);
294 void rxe_set_mtu(struct rxe_dev *rxe, unsigned int ndev_mtu)
296 struct rxe_port *port = &rxe->port;
299 mtu = eth_mtu_int_to_enum(ndev_mtu);
301 /* Make sure that new MTU in range */
302 mtu = mtu ? min_t(enum ib_mtu, mtu, IB_MTU_4096) : IB_MTU_256;
304 port->attr.active_mtu = mtu;
305 port->mtu_cap = ib_mtu_enum_to_int(mtu);
308 /* called by ifc layer to create new rxe device.
309 * The caller should allocate memory for rxe by calling ib_alloc_device.
311 int rxe_add(struct rxe_dev *rxe, unsigned int mtu)
315 kref_init(&rxe->ref_cnt);
321 rxe_set_mtu(rxe, mtu);
323 err = rxe_register_device(rxe);
334 /* called by the ifc layer to remove a device */
335 void rxe_remove(struct rxe_dev *rxe)
337 rxe_unregister_device(rxe);
342 static int __init rxe_module_init(void)
346 /* initialize slab caches for managed objects */
347 err = rxe_cache_init();
349 pr_err("unable to init object pools\n");
353 err = rxe_net_init();
361 static void __exit rxe_module_exit(void)
367 pr_info("unloaded\n");
370 late_initcall(rxe_module_init);
371 module_exit(rxe_module_exit);