blob: 4d1d96805ca5c90b140f41fd3ae5e61fbebc2d46 [file] [log] [blame]
Moni Shoua8700e3e2016-06-16 16:45:23 +03001/*
2 * Copyright (c) 2016 Mellanox Technologies Ltd. All rights reserved.
3 * Copyright (c) 2015 System Fabric Works, Inc. All rights reserved.
4 *
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:
10 *
11 * Redistribution and use in source and binary forms, with or
12 * without modification, are permitted provided that the following
13 * conditions are met:
14 *
15 * - Redistributions of source code must retain the above
16 * copyright notice, this list of conditions and the following
17 * disclaimer.
18 *
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.
23 *
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
31 * SOFTWARE.
32 */
33
Yuval Shaia4d6f2852017-03-14 16:01:57 +020034#include <net/addrconf.h>
Moni Shoua8700e3e2016-06-16 16:45:23 +030035#include "rxe.h"
36#include "rxe_loc.h"
37
38MODULE_AUTHOR("Bob Pearson, Frank Zago, John Groves, Kamal Heib");
39MODULE_DESCRIPTION("Soft RDMA transport");
40MODULE_LICENSE("Dual BSD/GPL");
Moni Shoua8700e3e2016-06-16 16:45:23 +030041
42/* free resources for all ports on a device */
43static void rxe_cleanup_ports(struct rxe_dev *rxe)
44{
45 kfree(rxe->port.pkey_tbl);
46 rxe->port.pkey_tbl = NULL;
47
48}
49
50/* free resources for a rxe device all objects created for this device must
51 * have been destroyed
52 */
53static void rxe_cleanup(struct rxe_dev *rxe)
54{
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);
65
66 rxe_cleanup_ports(rxe);
yonatanccee26882017-04-20 20:55:55 +030067
68 crypto_free_shash(rxe->tfm);
Moni Shoua8700e3e2016-06-16 16:45:23 +030069}
70
71/* called when all references have been dropped */
72void rxe_release(struct kref *kref)
73{
74 struct rxe_dev *rxe = container_of(kref, struct rxe_dev, ref_cnt);
75
76 rxe_cleanup(rxe);
77 ib_dealloc_device(&rxe->ib_dev);
78}
79
Moni Shoua8700e3e2016-06-16 16:45:23 +030080/* initialize rxe device parameters */
Zhu Yanjunbefd8d92018-03-07 00:47:57 -050081static void rxe_init_device_param(struct rxe_dev *rxe)
Moni Shoua8700e3e2016-06-16 16:45:23 +030082{
83 rxe->max_inline_data = RXE_MAX_INLINE_DATA;
84
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_sge = RXE_MAX_SGE;
95 rxe->attr.max_sge_rd = RXE_MAX_SGE_RD;
96 rxe->attr.max_cq = RXE_MAX_CQ;
97 rxe->attr.max_cqe = (1 << RXE_MAX_LOG_CQE) - 1;
98 rxe->attr.max_mr = RXE_MAX_MR;
99 rxe->attr.max_pd = RXE_MAX_PD;
100 rxe->attr.max_qp_rd_atom = RXE_MAX_QP_RD_ATOM;
101 rxe->attr.max_ee_rd_atom = RXE_MAX_EE_RD_ATOM;
102 rxe->attr.max_res_rd_atom = RXE_MAX_RES_RD_ATOM;
103 rxe->attr.max_qp_init_rd_atom = RXE_MAX_QP_INIT_RD_ATOM;
104 rxe->attr.max_ee_init_rd_atom = RXE_MAX_EE_INIT_RD_ATOM;
105 rxe->attr.atomic_cap = RXE_ATOMIC_CAP;
106 rxe->attr.max_ee = RXE_MAX_EE;
107 rxe->attr.max_rdd = RXE_MAX_RDD;
108 rxe->attr.max_mw = RXE_MAX_MW;
109 rxe->attr.max_raw_ipv6_qp = RXE_MAX_RAW_IPV6_QP;
110 rxe->attr.max_raw_ethy_qp = RXE_MAX_RAW_ETHY_QP;
111 rxe->attr.max_mcast_grp = RXE_MAX_MCAST_GRP;
112 rxe->attr.max_mcast_qp_attach = RXE_MAX_MCAST_QP_ATTACH;
113 rxe->attr.max_total_mcast_qp_attach = RXE_MAX_TOT_MCAST_QP_ATTACH;
114 rxe->attr.max_ah = RXE_MAX_AH;
115 rxe->attr.max_fmr = RXE_MAX_FMR;
116 rxe->attr.max_map_per_fmr = RXE_MAX_MAP_PER_FMR;
117 rxe->attr.max_srq = RXE_MAX_SRQ;
118 rxe->attr.max_srq_wr = RXE_MAX_SRQ_WR;
119 rxe->attr.max_srq_sge = RXE_MAX_SRQ_SGE;
120 rxe->attr.max_fast_reg_page_list_len = RXE_MAX_FMR_PAGE_LIST_LEN;
121 rxe->attr.max_pkeys = RXE_MAX_PKEYS;
122 rxe->attr.local_ca_ack_delay = RXE_LOCAL_CA_ACK_DELAY;
123
124 rxe->max_ucontext = RXE_MAX_UCONTEXT;
Moni Shoua8700e3e2016-06-16 16:45:23 +0300125}
126
127/* initialize port attributes */
128static int rxe_init_port_param(struct rxe_port *port)
129{
130 port->attr.state = RXE_PORT_STATE;
131 port->attr.max_mtu = RXE_PORT_MAX_MTU;
132 port->attr.active_mtu = RXE_PORT_ACTIVE_MTU;
133 port->attr.gid_tbl_len = RXE_PORT_GID_TBL_LEN;
134 port->attr.port_cap_flags = RXE_PORT_PORT_CAP_FLAGS;
135 port->attr.max_msg_sz = RXE_PORT_MAX_MSG_SZ;
136 port->attr.bad_pkey_cntr = RXE_PORT_BAD_PKEY_CNTR;
137 port->attr.qkey_viol_cntr = RXE_PORT_QKEY_VIOL_CNTR;
138 port->attr.pkey_tbl_len = RXE_PORT_PKEY_TBL_LEN;
139 port->attr.lid = RXE_PORT_LID;
140 port->attr.sm_lid = RXE_PORT_SM_LID;
141 port->attr.lmc = RXE_PORT_LMC;
142 port->attr.max_vl_num = RXE_PORT_MAX_VL_NUM;
143 port->attr.sm_sl = RXE_PORT_SM_SL;
144 port->attr.subnet_timeout = RXE_PORT_SUBNET_TIMEOUT;
145 port->attr.init_type_reply = RXE_PORT_INIT_TYPE_REPLY;
146 port->attr.active_width = RXE_PORT_ACTIVE_WIDTH;
147 port->attr.active_speed = RXE_PORT_ACTIVE_SPEED;
148 port->attr.phys_state = RXE_PORT_PHYS_STATE;
149 port->mtu_cap =
150 ib_mtu_enum_to_int(RXE_PORT_ACTIVE_MTU);
151 port->subnet_prefix = cpu_to_be64(RXE_PORT_SUBNET_PREFIX);
152
153 return 0;
154}
155
156/* initialize port state, note IB convention that HCA ports are always
157 * numbered from 1
158 */
159static int rxe_init_ports(struct rxe_dev *rxe)
160{
161 struct rxe_port *port = &rxe->port;
162
163 rxe_init_port_param(port);
164
165 if (!port->attr.pkey_tbl_len || !port->attr.gid_tbl_len)
166 return -EINVAL;
167
168 port->pkey_tbl = kcalloc(port->attr.pkey_tbl_len,
169 sizeof(*port->pkey_tbl), GFP_KERNEL);
170
171 if (!port->pkey_tbl)
172 return -ENOMEM;
173
174 port->pkey_tbl[0] = 0xffff;
Yuval Shaia4d6f2852017-03-14 16:01:57 +0200175 addrconf_addr_eui48((unsigned char *)&port->port_guid,
176 rxe->ndev->dev_addr);
Moni Shoua8700e3e2016-06-16 16:45:23 +0300177
178 spin_lock_init(&port->port_lock);
179
180 return 0;
181}
182
183/* init pools of managed objects */
184static int rxe_init_pools(struct rxe_dev *rxe)
185{
186 int err;
187
188 err = rxe_pool_init(rxe, &rxe->uc_pool, RXE_TYPE_UC,
189 rxe->max_ucontext);
190 if (err)
191 goto err1;
192
193 err = rxe_pool_init(rxe, &rxe->pd_pool, RXE_TYPE_PD,
194 rxe->attr.max_pd);
195 if (err)
196 goto err2;
197
198 err = rxe_pool_init(rxe, &rxe->ah_pool, RXE_TYPE_AH,
199 rxe->attr.max_ah);
200 if (err)
201 goto err3;
202
203 err = rxe_pool_init(rxe, &rxe->srq_pool, RXE_TYPE_SRQ,
204 rxe->attr.max_srq);
205 if (err)
206 goto err4;
207
208 err = rxe_pool_init(rxe, &rxe->qp_pool, RXE_TYPE_QP,
209 rxe->attr.max_qp);
210 if (err)
211 goto err5;
212
213 err = rxe_pool_init(rxe, &rxe->cq_pool, RXE_TYPE_CQ,
214 rxe->attr.max_cq);
215 if (err)
216 goto err6;
217
218 err = rxe_pool_init(rxe, &rxe->mr_pool, RXE_TYPE_MR,
219 rxe->attr.max_mr);
220 if (err)
221 goto err7;
222
223 err = rxe_pool_init(rxe, &rxe->mw_pool, RXE_TYPE_MW,
224 rxe->attr.max_mw);
225 if (err)
226 goto err8;
227
228 err = rxe_pool_init(rxe, &rxe->mc_grp_pool, RXE_TYPE_MC_GRP,
229 rxe->attr.max_mcast_grp);
230 if (err)
231 goto err9;
232
233 err = rxe_pool_init(rxe, &rxe->mc_elem_pool, RXE_TYPE_MC_ELEM,
234 rxe->attr.max_total_mcast_qp_attach);
235 if (err)
236 goto err10;
237
238 return 0;
239
240err10:
241 rxe_pool_cleanup(&rxe->mc_grp_pool);
242err9:
243 rxe_pool_cleanup(&rxe->mw_pool);
244err8:
245 rxe_pool_cleanup(&rxe->mr_pool);
246err7:
247 rxe_pool_cleanup(&rxe->cq_pool);
248err6:
249 rxe_pool_cleanup(&rxe->qp_pool);
250err5:
251 rxe_pool_cleanup(&rxe->srq_pool);
252err4:
253 rxe_pool_cleanup(&rxe->ah_pool);
254err3:
255 rxe_pool_cleanup(&rxe->pd_pool);
256err2:
257 rxe_pool_cleanup(&rxe->uc_pool);
258err1:
259 return err;
260}
261
262/* initialize rxe device state */
263static int rxe_init(struct rxe_dev *rxe)
264{
265 int err;
266
267 /* init default device parameters */
268 rxe_init_device_param(rxe);
269
270 err = rxe_init_ports(rxe);
271 if (err)
272 goto err1;
273
274 err = rxe_init_pools(rxe);
275 if (err)
276 goto err2;
277
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);
283
284 mutex_init(&rxe->usdev_lock);
285
286 return 0;
287
288err2:
289 rxe_cleanup_ports(rxe);
290err1:
291 return err;
292}
293
294int rxe_set_mtu(struct rxe_dev *rxe, unsigned int ndev_mtu)
295{
296 struct rxe_port *port = &rxe->port;
297 enum ib_mtu mtu;
298
299 mtu = eth_mtu_int_to_enum(ndev_mtu);
300
301 /* Make sure that new MTU in range */
302 mtu = mtu ? min_t(enum ib_mtu, mtu, RXE_PORT_MAX_MTU) : IB_MTU_256;
303
304 port->attr.active_mtu = mtu;
305 port->mtu_cap = ib_mtu_enum_to_int(mtu);
306
307 return 0;
308}
Moni Shoua8700e3e2016-06-16 16:45:23 +0300309
310/* called by ifc layer to create new rxe device.
311 * The caller should allocate memory for rxe by calling ib_alloc_device.
312 */
313int rxe_add(struct rxe_dev *rxe, unsigned int mtu)
314{
315 int err;
316
317 kref_init(&rxe->ref_cnt);
318
319 err = rxe_init(rxe);
320 if (err)
321 goto err1;
322
323 err = rxe_set_mtu(rxe, mtu);
324 if (err)
325 goto err1;
326
327 err = rxe_register_device(rxe);
328 if (err)
329 goto err1;
330
331 return 0;
332
333err1:
334 rxe_dev_put(rxe);
335 return err;
336}
Moni Shoua8700e3e2016-06-16 16:45:23 +0300337
338/* called by the ifc layer to remove a device */
339void rxe_remove(struct rxe_dev *rxe)
340{
341 rxe_unregister_device(rxe);
342
343 rxe_dev_put(rxe);
344}
Moni Shoua8700e3e2016-06-16 16:45:23 +0300345
346static int __init rxe_module_init(void)
347{
348 int err;
349
350 /* initialize slab caches for managed objects */
351 err = rxe_cache_init();
352 if (err) {
Parav Pandite404f942016-09-28 20:26:26 +0000353 pr_err("unable to init object pools\n");
Moni Shoua8700e3e2016-06-16 16:45:23 +0300354 return err;
355 }
356
Parav Pandite404f942016-09-28 20:26:26 +0000357 err = rxe_net_init();
358 if (err)
359 return err;
Yonatan Cohendfdd6152016-09-07 14:04:04 +0300360
Parav Pandite404f942016-09-28 20:26:26 +0000361 pr_info("loaded\n");
Moni Shoua8700e3e2016-06-16 16:45:23 +0300362 return 0;
Moni Shoua8700e3e2016-06-16 16:45:23 +0300363}
364
365static void __exit rxe_module_exit(void)
366{
367 rxe_remove_all();
368 rxe_net_exit();
369 rxe_cache_exit();
370
Parav Pandite404f942016-09-28 20:26:26 +0000371 pr_info("unloaded\n");
Moni Shoua8700e3e2016-06-16 16:45:23 +0300372}
373
Stephen Batesb9fe8562016-09-23 09:32:11 -0600374late_initcall(rxe_module_init);
Moni Shoua8700e3e2016-06-16 16:45:23 +0300375module_exit(rxe_module_exit);