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225c7b1f RD |
1 | /* |
2 | * Copyright (c) 2007 Cisco Systems, Inc. All rights reserved. | |
51a379d0 | 3 | * Copyright (c) 2007, 2008 Mellanox Technologies. All rights reserved. |
225c7b1f RD |
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 | ||
ea54b10c | 34 | #include <linux/log2.h> |
1049f138 | 35 | #include <linux/etherdevice.h> |
3ef967a4 | 36 | #include <net/ip.h> |
5a0e3ad6 | 37 | #include <linux/slab.h> |
fa417f7b | 38 | #include <linux/netdevice.h> |
ea54b10c | 39 | |
225c7b1f RD |
40 | #include <rdma/ib_cache.h> |
41 | #include <rdma/ib_pack.h> | |
4c3eb3ca | 42 | #include <rdma/ib_addr.h> |
1ffeb2eb | 43 | #include <rdma/ib_mad.h> |
89944450 | 44 | #include <rdma/uverbs_ioctl.h> |
225c7b1f | 45 | |
2f48485d | 46 | #include <linux/mlx4/driver.h> |
225c7b1f RD |
47 | #include <linux/mlx4/qp.h> |
48 | ||
49 | #include "mlx4_ib.h" | |
9ce28a20 | 50 | #include <rdma/mlx4-abi.h> |
225c7b1f | 51 | |
35f05dab YH |
52 | static void mlx4_ib_lock_cqs(struct mlx4_ib_cq *send_cq, |
53 | struct mlx4_ib_cq *recv_cq); | |
54 | static void mlx4_ib_unlock_cqs(struct mlx4_ib_cq *send_cq, | |
55 | struct mlx4_ib_cq *recv_cq); | |
89944450 SR |
56 | static int _mlx4_ib_modify_wq(struct ib_wq *ibwq, enum ib_wq_state new_state, |
57 | struct ib_udata *udata); | |
35f05dab | 58 | |
225c7b1f RD |
59 | enum { |
60 | MLX4_IB_ACK_REQ_FREQ = 8, | |
61 | }; | |
62 | ||
63 | enum { | |
64 | MLX4_IB_DEFAULT_SCHED_QUEUE = 0x83, | |
fa417f7b EC |
65 | MLX4_IB_DEFAULT_QP0_SCHED_QUEUE = 0x3f, |
66 | MLX4_IB_LINK_TYPE_IB = 0, | |
67 | MLX4_IB_LINK_TYPE_ETH = 1 | |
225c7b1f RD |
68 | }; |
69 | ||
70 | enum { | |
71 | /* | |
fa417f7b | 72 | * Largest possible UD header: send with GRH and immediate |
4c3eb3ca EC |
73 | * data plus 18 bytes for an Ethernet header with VLAN/802.1Q |
74 | * tag. (LRH would only use 8 bytes, so Ethernet is the | |
75 | * biggest case) | |
225c7b1f | 76 | */ |
4c3eb3ca | 77 | MLX4_IB_UD_HEADER_SIZE = 82, |
417608c2 | 78 | MLX4_IB_LSO_HEADER_SPARE = 128, |
225c7b1f RD |
79 | }; |
80 | ||
81 | struct mlx4_ib_sqp { | |
82 | struct mlx4_ib_qp qp; | |
83 | int pkey_index; | |
84 | u32 qkey; | |
85 | u32 send_psn; | |
86 | struct ib_ud_header ud_header; | |
87 | u8 header_buf[MLX4_IB_UD_HEADER_SIZE]; | |
e1b866c6 | 88 | struct ib_qp *roce_v2_gsi; |
225c7b1f RD |
89 | }; |
90 | ||
83904132 | 91 | enum { |
417608c2 EC |
92 | MLX4_IB_MIN_SQ_STRIDE = 6, |
93 | MLX4_IB_CACHE_LINE_SIZE = 64, | |
83904132 JM |
94 | }; |
95 | ||
3987a2d3 OG |
96 | enum { |
97 | MLX4_RAW_QP_MTU = 7, | |
98 | MLX4_RAW_QP_MSGMAX = 31, | |
99 | }; | |
100 | ||
297e0dad MS |
101 | #ifndef ETH_ALEN |
102 | #define ETH_ALEN 6 | |
103 | #endif | |
297e0dad | 104 | |
225c7b1f | 105 | static const __be32 mlx4_ib_opcode[] = { |
6fa8f719 VS |
106 | [IB_WR_SEND] = cpu_to_be32(MLX4_OPCODE_SEND), |
107 | [IB_WR_LSO] = cpu_to_be32(MLX4_OPCODE_LSO), | |
108 | [IB_WR_SEND_WITH_IMM] = cpu_to_be32(MLX4_OPCODE_SEND_IMM), | |
109 | [IB_WR_RDMA_WRITE] = cpu_to_be32(MLX4_OPCODE_RDMA_WRITE), | |
110 | [IB_WR_RDMA_WRITE_WITH_IMM] = cpu_to_be32(MLX4_OPCODE_RDMA_WRITE_IMM), | |
111 | [IB_WR_RDMA_READ] = cpu_to_be32(MLX4_OPCODE_RDMA_READ), | |
112 | [IB_WR_ATOMIC_CMP_AND_SWP] = cpu_to_be32(MLX4_OPCODE_ATOMIC_CS), | |
113 | [IB_WR_ATOMIC_FETCH_AND_ADD] = cpu_to_be32(MLX4_OPCODE_ATOMIC_FA), | |
114 | [IB_WR_SEND_WITH_INV] = cpu_to_be32(MLX4_OPCODE_SEND_INVAL), | |
115 | [IB_WR_LOCAL_INV] = cpu_to_be32(MLX4_OPCODE_LOCAL_INVAL), | |
1b2cd0fc | 116 | [IB_WR_REG_MR] = cpu_to_be32(MLX4_OPCODE_FMR), |
6fa8f719 VS |
117 | [IB_WR_MASKED_ATOMIC_CMP_AND_SWP] = cpu_to_be32(MLX4_OPCODE_MASKED_ATOMIC_CS), |
118 | [IB_WR_MASKED_ATOMIC_FETCH_AND_ADD] = cpu_to_be32(MLX4_OPCODE_MASKED_ATOMIC_FA), | |
225c7b1f RD |
119 | }; |
120 | ||
400b1ebc GL |
121 | enum mlx4_ib_source_type { |
122 | MLX4_IB_QP_SRC = 0, | |
123 | MLX4_IB_RWQ_SRC = 1, | |
124 | }; | |
125 | ||
225c7b1f RD |
126 | static struct mlx4_ib_sqp *to_msqp(struct mlx4_ib_qp *mqp) |
127 | { | |
128 | return container_of(mqp, struct mlx4_ib_sqp, qp); | |
129 | } | |
130 | ||
1ffeb2eb JM |
131 | static int is_tunnel_qp(struct mlx4_ib_dev *dev, struct mlx4_ib_qp *qp) |
132 | { | |
133 | if (!mlx4_is_master(dev->dev)) | |
134 | return 0; | |
135 | ||
47605df9 JM |
136 | return qp->mqp.qpn >= dev->dev->phys_caps.base_tunnel_sqpn && |
137 | qp->mqp.qpn < dev->dev->phys_caps.base_tunnel_sqpn + | |
138 | 8 * MLX4_MFUNC_MAX; | |
1ffeb2eb JM |
139 | } |
140 | ||
225c7b1f RD |
141 | static int is_sqp(struct mlx4_ib_dev *dev, struct mlx4_ib_qp *qp) |
142 | { | |
47605df9 JM |
143 | int proxy_sqp = 0; |
144 | int real_sqp = 0; | |
145 | int i; | |
146 | /* PPF or Native -- real SQP */ | |
147 | real_sqp = ((mlx4_is_master(dev->dev) || !mlx4_is_mfunc(dev->dev)) && | |
148 | qp->mqp.qpn >= dev->dev->phys_caps.base_sqpn && | |
149 | qp->mqp.qpn <= dev->dev->phys_caps.base_sqpn + 3); | |
150 | if (real_sqp) | |
151 | return 1; | |
152 | /* VF or PF -- proxy SQP */ | |
153 | if (mlx4_is_mfunc(dev->dev)) { | |
154 | for (i = 0; i < dev->dev->caps.num_ports; i++) { | |
c73c8b1e EBE |
155 | if (qp->mqp.qpn == dev->dev->caps.spec_qps[i].qp0_proxy || |
156 | qp->mqp.qpn == dev->dev->caps.spec_qps[i].qp1_proxy) { | |
47605df9 JM |
157 | proxy_sqp = 1; |
158 | break; | |
159 | } | |
160 | } | |
161 | } | |
e1b866c6 MS |
162 | if (proxy_sqp) |
163 | return 1; | |
164 | ||
165 | return !!(qp->flags & MLX4_IB_ROCE_V2_GSI_QP); | |
225c7b1f RD |
166 | } |
167 | ||
1ffeb2eb | 168 | /* used for INIT/CLOSE port logic */ |
225c7b1f RD |
169 | static int is_qp0(struct mlx4_ib_dev *dev, struct mlx4_ib_qp *qp) |
170 | { | |
47605df9 JM |
171 | int proxy_qp0 = 0; |
172 | int real_qp0 = 0; | |
173 | int i; | |
174 | /* PPF or Native -- real QP0 */ | |
175 | real_qp0 = ((mlx4_is_master(dev->dev) || !mlx4_is_mfunc(dev->dev)) && | |
176 | qp->mqp.qpn >= dev->dev->phys_caps.base_sqpn && | |
177 | qp->mqp.qpn <= dev->dev->phys_caps.base_sqpn + 1); | |
178 | if (real_qp0) | |
179 | return 1; | |
180 | /* VF or PF -- proxy QP0 */ | |
181 | if (mlx4_is_mfunc(dev->dev)) { | |
182 | for (i = 0; i < dev->dev->caps.num_ports; i++) { | |
c73c8b1e | 183 | if (qp->mqp.qpn == dev->dev->caps.spec_qps[i].qp0_proxy) { |
47605df9 JM |
184 | proxy_qp0 = 1; |
185 | break; | |
186 | } | |
187 | } | |
188 | } | |
189 | return proxy_qp0; | |
225c7b1f RD |
190 | } |
191 | ||
192 | static void *get_wqe(struct mlx4_ib_qp *qp, int offset) | |
193 | { | |
1c69fc2a | 194 | return mlx4_buf_offset(&qp->buf, offset); |
225c7b1f RD |
195 | } |
196 | ||
197 | static void *get_recv_wqe(struct mlx4_ib_qp *qp, int n) | |
198 | { | |
199 | return get_wqe(qp, qp->rq.offset + (n << qp->rq.wqe_shift)); | |
200 | } | |
201 | ||
202 | static void *get_send_wqe(struct mlx4_ib_qp *qp, int n) | |
203 | { | |
204 | return get_wqe(qp, qp->sq.offset + (n << qp->sq.wqe_shift)); | |
205 | } | |
206 | ||
0e6e7416 RD |
207 | /* |
208 | * Stamp a SQ WQE so that it is invalid if prefetched by marking the | |
f95ccffc JM |
209 | * first four bytes of every 64 byte chunk with 0xffffffff, except for |
210 | * the very first chunk of the WQE. | |
0e6e7416 | 211 | */ |
f95ccffc | 212 | static void stamp_send_wqe(struct mlx4_ib_qp *qp, int n) |
0e6e7416 | 213 | { |
d2ae16d5 | 214 | __be32 *wqe; |
0e6e7416 | 215 | int i; |
ea54b10c | 216 | int s; |
ea54b10c | 217 | void *buf; |
ea54b10c | 218 | struct mlx4_wqe_ctrl_seg *ctrl; |
ea54b10c | 219 | |
f95ccffc JM |
220 | buf = get_send_wqe(qp, n & (qp->sq.wqe_cnt - 1)); |
221 | ctrl = (struct mlx4_wqe_ctrl_seg *)buf; | |
222 | s = (ctrl->qpn_vlan.fence_size & 0x3f) << 4; | |
223 | for (i = 64; i < s; i += 64) { | |
224 | wqe = buf + i; | |
225 | *wqe = cpu_to_be32(0xffffffff); | |
ea54b10c | 226 | } |
0e6e7416 RD |
227 | } |
228 | ||
225c7b1f RD |
229 | static void mlx4_ib_qp_event(struct mlx4_qp *qp, enum mlx4_event type) |
230 | { | |
231 | struct ib_event event; | |
232 | struct ib_qp *ibqp = &to_mibqp(qp)->ibqp; | |
233 | ||
234 | if (type == MLX4_EVENT_TYPE_PATH_MIG) | |
235 | to_mibqp(qp)->port = to_mibqp(qp)->alt_port; | |
236 | ||
237 | if (ibqp->event_handler) { | |
238 | event.device = ibqp->device; | |
239 | event.element.qp = ibqp; | |
240 | switch (type) { | |
241 | case MLX4_EVENT_TYPE_PATH_MIG: | |
242 | event.event = IB_EVENT_PATH_MIG; | |
243 | break; | |
244 | case MLX4_EVENT_TYPE_COMM_EST: | |
245 | event.event = IB_EVENT_COMM_EST; | |
246 | break; | |
247 | case MLX4_EVENT_TYPE_SQ_DRAINED: | |
248 | event.event = IB_EVENT_SQ_DRAINED; | |
249 | break; | |
250 | case MLX4_EVENT_TYPE_SRQ_QP_LAST_WQE: | |
251 | event.event = IB_EVENT_QP_LAST_WQE_REACHED; | |
252 | break; | |
253 | case MLX4_EVENT_TYPE_WQ_CATAS_ERROR: | |
254 | event.event = IB_EVENT_QP_FATAL; | |
255 | break; | |
256 | case MLX4_EVENT_TYPE_PATH_MIG_FAILED: | |
257 | event.event = IB_EVENT_PATH_MIG_ERR; | |
258 | break; | |
259 | case MLX4_EVENT_TYPE_WQ_INVAL_REQ_ERROR: | |
260 | event.event = IB_EVENT_QP_REQ_ERR; | |
261 | break; | |
262 | case MLX4_EVENT_TYPE_WQ_ACCESS_ERROR: | |
263 | event.event = IB_EVENT_QP_ACCESS_ERR; | |
264 | break; | |
265 | default: | |
987c8f8f | 266 | pr_warn("Unexpected event type %d " |
225c7b1f RD |
267 | "on QP %06x\n", type, qp->qpn); |
268 | return; | |
269 | } | |
270 | ||
271 | ibqp->event_handler(&event, ibqp->qp_context); | |
272 | } | |
273 | } | |
274 | ||
400b1ebc GL |
275 | static void mlx4_ib_wq_event(struct mlx4_qp *qp, enum mlx4_event type) |
276 | { | |
277 | pr_warn_ratelimited("Unexpected event type %d on WQ 0x%06x. Events are not supported for WQs\n", | |
278 | type, qp->qpn); | |
279 | } | |
280 | ||
1ffeb2eb | 281 | static int send_wqe_overhead(enum mlx4_ib_qp_type type, u32 flags) |
225c7b1f RD |
282 | { |
283 | /* | |
284 | * UD WQEs must have a datagram segment. | |
285 | * RC and UC WQEs might have a remote address segment. | |
286 | * MLX WQEs need two extra inline data segments (for the UD | |
287 | * header and space for the ICRC). | |
288 | */ | |
289 | switch (type) { | |
1ffeb2eb | 290 | case MLX4_IB_QPT_UD: |
225c7b1f | 291 | return sizeof (struct mlx4_wqe_ctrl_seg) + |
b832be1e | 292 | sizeof (struct mlx4_wqe_datagram_seg) + |
417608c2 | 293 | ((flags & MLX4_IB_QP_LSO) ? MLX4_IB_LSO_HEADER_SPARE : 0); |
1ffeb2eb JM |
294 | case MLX4_IB_QPT_PROXY_SMI_OWNER: |
295 | case MLX4_IB_QPT_PROXY_SMI: | |
296 | case MLX4_IB_QPT_PROXY_GSI: | |
297 | return sizeof (struct mlx4_wqe_ctrl_seg) + | |
298 | sizeof (struct mlx4_wqe_datagram_seg) + 64; | |
299 | case MLX4_IB_QPT_TUN_SMI_OWNER: | |
300 | case MLX4_IB_QPT_TUN_GSI: | |
301 | return sizeof (struct mlx4_wqe_ctrl_seg) + | |
302 | sizeof (struct mlx4_wqe_datagram_seg); | |
303 | ||
304 | case MLX4_IB_QPT_UC: | |
225c7b1f RD |
305 | return sizeof (struct mlx4_wqe_ctrl_seg) + |
306 | sizeof (struct mlx4_wqe_raddr_seg); | |
1ffeb2eb | 307 | case MLX4_IB_QPT_RC: |
225c7b1f | 308 | return sizeof (struct mlx4_wqe_ctrl_seg) + |
f2940e2c | 309 | sizeof (struct mlx4_wqe_masked_atomic_seg) + |
225c7b1f | 310 | sizeof (struct mlx4_wqe_raddr_seg); |
1ffeb2eb JM |
311 | case MLX4_IB_QPT_SMI: |
312 | case MLX4_IB_QPT_GSI: | |
225c7b1f RD |
313 | return sizeof (struct mlx4_wqe_ctrl_seg) + |
314 | ALIGN(MLX4_IB_UD_HEADER_SIZE + | |
e61ef241 RD |
315 | DIV_ROUND_UP(MLX4_IB_UD_HEADER_SIZE, |
316 | MLX4_INLINE_ALIGN) * | |
225c7b1f RD |
317 | sizeof (struct mlx4_wqe_inline_seg), |
318 | sizeof (struct mlx4_wqe_data_seg)) + | |
319 | ALIGN(4 + | |
320 | sizeof (struct mlx4_wqe_inline_seg), | |
321 | sizeof (struct mlx4_wqe_data_seg)); | |
322 | default: | |
323 | return sizeof (struct mlx4_wqe_ctrl_seg); | |
324 | } | |
325 | } | |
326 | ||
2446304d | 327 | static int set_rq_size(struct mlx4_ib_dev *dev, struct ib_qp_cap *cap, |
913df8c3 | 328 | bool is_user, bool has_rq, struct mlx4_ib_qp *qp, |
ea30b966 | 329 | u32 inl_recv_sz) |
225c7b1f | 330 | { |
2446304d | 331 | /* Sanity check RQ size before proceeding */ |
fc2d0044 SG |
332 | if (cap->max_recv_wr > dev->dev->caps.max_wqes - MLX4_IB_SQ_MAX_SPARE || |
333 | cap->max_recv_sge > min(dev->dev->caps.max_sq_sg, dev->dev->caps.max_rq_sg)) | |
2446304d EC |
334 | return -EINVAL; |
335 | ||
0a1405da | 336 | if (!has_rq) { |
ea30b966 | 337 | if (cap->max_recv_wr || inl_recv_sz) |
a4cd7ed8 | 338 | return -EINVAL; |
2446304d | 339 | |
0e6e7416 | 340 | qp->rq.wqe_cnt = qp->rq.max_gs = 0; |
a4cd7ed8 | 341 | } else { |
ea30b966 MG |
342 | u32 max_inl_recv_sz = dev->dev->caps.max_rq_sg * |
343 | sizeof(struct mlx4_wqe_data_seg); | |
344 | u32 wqe_size; | |
345 | ||
a4cd7ed8 | 346 | /* HW requires >= 1 RQ entry with >= 1 gather entry */ |
ea30b966 MG |
347 | if (is_user && (!cap->max_recv_wr || !cap->max_recv_sge || |
348 | inl_recv_sz > max_inl_recv_sz)) | |
a4cd7ed8 RD |
349 | return -EINVAL; |
350 | ||
0e6e7416 | 351 | qp->rq.wqe_cnt = roundup_pow_of_two(max(1U, cap->max_recv_wr)); |
42c059ea | 352 | qp->rq.max_gs = roundup_pow_of_two(max(1U, cap->max_recv_sge)); |
ea30b966 MG |
353 | wqe_size = qp->rq.max_gs * sizeof(struct mlx4_wqe_data_seg); |
354 | qp->rq.wqe_shift = ilog2(max_t(u32, wqe_size, inl_recv_sz)); | |
a4cd7ed8 | 355 | } |
2446304d | 356 | |
fc2d0044 SG |
357 | /* leave userspace return values as they were, so as not to break ABI */ |
358 | if (is_user) { | |
359 | cap->max_recv_wr = qp->rq.max_post = qp->rq.wqe_cnt; | |
360 | cap->max_recv_sge = qp->rq.max_gs; | |
361 | } else { | |
362 | cap->max_recv_wr = qp->rq.max_post = | |
363 | min(dev->dev->caps.max_wqes - MLX4_IB_SQ_MAX_SPARE, qp->rq.wqe_cnt); | |
364 | cap->max_recv_sge = min(qp->rq.max_gs, | |
365 | min(dev->dev->caps.max_sq_sg, | |
366 | dev->dev->caps.max_rq_sg)); | |
367 | } | |
2446304d EC |
368 | |
369 | return 0; | |
370 | } | |
371 | ||
372 | static int set_kernel_sq_size(struct mlx4_ib_dev *dev, struct ib_qp_cap *cap, | |
f95ccffc | 373 | enum mlx4_ib_qp_type type, struct mlx4_ib_qp *qp) |
2446304d | 374 | { |
ea54b10c JM |
375 | int s; |
376 | ||
2446304d | 377 | /* Sanity check SQ size before proceeding */ |
fc2d0044 SG |
378 | if (cap->max_send_wr > (dev->dev->caps.max_wqes - MLX4_IB_SQ_MAX_SPARE) || |
379 | cap->max_send_sge > min(dev->dev->caps.max_sq_sg, dev->dev->caps.max_rq_sg) || | |
b832be1e | 380 | cap->max_inline_data + send_wqe_overhead(type, qp->flags) + |
225c7b1f RD |
381 | sizeof (struct mlx4_wqe_inline_seg) > dev->dev->caps.max_sq_desc_sz) |
382 | return -EINVAL; | |
383 | ||
384 | /* | |
385 | * For MLX transport we need 2 extra S/G entries: | |
386 | * one for the header and one for the checksum at the end | |
387 | */ | |
1ffeb2eb JM |
388 | if ((type == MLX4_IB_QPT_SMI || type == MLX4_IB_QPT_GSI || |
389 | type & (MLX4_IB_QPT_PROXY_SMI_OWNER | MLX4_IB_QPT_TUN_SMI_OWNER)) && | |
225c7b1f RD |
390 | cap->max_send_sge + 2 > dev->dev->caps.max_sq_sg) |
391 | return -EINVAL; | |
392 | ||
ea54b10c JM |
393 | s = max(cap->max_send_sge * sizeof (struct mlx4_wqe_data_seg), |
394 | cap->max_inline_data + sizeof (struct mlx4_wqe_inline_seg)) + | |
b832be1e | 395 | send_wqe_overhead(type, qp->flags); |
225c7b1f | 396 | |
cd155c1c RD |
397 | if (s > dev->dev->caps.max_sq_desc_sz) |
398 | return -EINVAL; | |
399 | ||
f95ccffc JM |
400 | qp->sq.wqe_shift = ilog2(roundup_pow_of_two(s)); |
401 | ||
0e6e7416 | 402 | /* |
f95ccffc JM |
403 | * We need to leave 2 KB + 1 WR of headroom in the SQ to |
404 | * allow HW to prefetch. | |
0e6e7416 | 405 | */ |
350b4c8a | 406 | qp->sq_spare_wqes = MLX4_IB_SQ_HEADROOM(qp->sq.wqe_shift); |
f95ccffc JM |
407 | qp->sq.wqe_cnt = roundup_pow_of_two(cap->max_send_wr + |
408 | qp->sq_spare_wqes); | |
409 | ||
410 | qp->sq.max_gs = | |
411 | (min(dev->dev->caps.max_sq_desc_sz, | |
412 | (1 << qp->sq.wqe_shift)) - | |
413 | send_wqe_overhead(type, qp->flags)) / | |
b832be1e | 414 | sizeof (struct mlx4_wqe_data_seg); |
0e6e7416 RD |
415 | |
416 | qp->buf_size = (qp->rq.wqe_cnt << qp->rq.wqe_shift) + | |
417 | (qp->sq.wqe_cnt << qp->sq.wqe_shift); | |
225c7b1f RD |
418 | if (qp->rq.wqe_shift > qp->sq.wqe_shift) { |
419 | qp->rq.offset = 0; | |
0e6e7416 | 420 | qp->sq.offset = qp->rq.wqe_cnt << qp->rq.wqe_shift; |
225c7b1f | 421 | } else { |
0e6e7416 | 422 | qp->rq.offset = qp->sq.wqe_cnt << qp->sq.wqe_shift; |
225c7b1f RD |
423 | qp->sq.offset = 0; |
424 | } | |
425 | ||
ea54b10c | 426 | cap->max_send_wr = qp->sq.max_post = |
f95ccffc | 427 | qp->sq.wqe_cnt - qp->sq_spare_wqes; |
cd155c1c RD |
428 | cap->max_send_sge = min(qp->sq.max_gs, |
429 | min(dev->dev->caps.max_sq_sg, | |
430 | dev->dev->caps.max_rq_sg)); | |
54e95f8d RD |
431 | /* We don't support inline sends for kernel QPs (yet) */ |
432 | cap->max_inline_data = 0; | |
225c7b1f RD |
433 | |
434 | return 0; | |
435 | } | |
436 | ||
83904132 JM |
437 | static int set_user_sq_size(struct mlx4_ib_dev *dev, |
438 | struct mlx4_ib_qp *qp, | |
2446304d EC |
439 | struct mlx4_ib_create_qp *ucmd) |
440 | { | |
83904132 JM |
441 | /* Sanity check SQ size before proceeding */ |
442 | if ((1 << ucmd->log_sq_bb_count) > dev->dev->caps.max_wqes || | |
443 | ucmd->log_sq_stride > | |
444 | ilog2(roundup_pow_of_two(dev->dev->caps.max_sq_desc_sz)) || | |
445 | ucmd->log_sq_stride < MLX4_IB_MIN_SQ_STRIDE) | |
446 | return -EINVAL; | |
447 | ||
0e6e7416 | 448 | qp->sq.wqe_cnt = 1 << ucmd->log_sq_bb_count; |
2446304d EC |
449 | qp->sq.wqe_shift = ucmd->log_sq_stride; |
450 | ||
0e6e7416 RD |
451 | qp->buf_size = (qp->rq.wqe_cnt << qp->rq.wqe_shift) + |
452 | (qp->sq.wqe_cnt << qp->sq.wqe_shift); | |
2446304d EC |
453 | |
454 | return 0; | |
455 | } | |
456 | ||
1ffeb2eb JM |
457 | static int alloc_proxy_bufs(struct ib_device *dev, struct mlx4_ib_qp *qp) |
458 | { | |
459 | int i; | |
460 | ||
461 | qp->sqp_proxy_rcv = | |
6da2ec56 KC |
462 | kmalloc_array(qp->rq.wqe_cnt, sizeof(struct mlx4_ib_buf), |
463 | GFP_KERNEL); | |
1ffeb2eb JM |
464 | if (!qp->sqp_proxy_rcv) |
465 | return -ENOMEM; | |
466 | for (i = 0; i < qp->rq.wqe_cnt; i++) { | |
467 | qp->sqp_proxy_rcv[i].addr = | |
468 | kmalloc(sizeof (struct mlx4_ib_proxy_sqp_hdr), | |
469 | GFP_KERNEL); | |
470 | if (!qp->sqp_proxy_rcv[i].addr) | |
471 | goto err; | |
472 | qp->sqp_proxy_rcv[i].map = | |
473 | ib_dma_map_single(dev, qp->sqp_proxy_rcv[i].addr, | |
474 | sizeof (struct mlx4_ib_proxy_sqp_hdr), | |
475 | DMA_FROM_DEVICE); | |
cc47d369 SO |
476 | if (ib_dma_mapping_error(dev, qp->sqp_proxy_rcv[i].map)) { |
477 | kfree(qp->sqp_proxy_rcv[i].addr); | |
478 | goto err; | |
479 | } | |
1ffeb2eb JM |
480 | } |
481 | return 0; | |
482 | ||
483 | err: | |
484 | while (i > 0) { | |
485 | --i; | |
486 | ib_dma_unmap_single(dev, qp->sqp_proxy_rcv[i].map, | |
487 | sizeof (struct mlx4_ib_proxy_sqp_hdr), | |
488 | DMA_FROM_DEVICE); | |
489 | kfree(qp->sqp_proxy_rcv[i].addr); | |
490 | } | |
491 | kfree(qp->sqp_proxy_rcv); | |
492 | qp->sqp_proxy_rcv = NULL; | |
493 | return -ENOMEM; | |
494 | } | |
495 | ||
496 | static void free_proxy_bufs(struct ib_device *dev, struct mlx4_ib_qp *qp) | |
497 | { | |
498 | int i; | |
499 | ||
500 | for (i = 0; i < qp->rq.wqe_cnt; i++) { | |
501 | ib_dma_unmap_single(dev, qp->sqp_proxy_rcv[i].map, | |
502 | sizeof (struct mlx4_ib_proxy_sqp_hdr), | |
503 | DMA_FROM_DEVICE); | |
504 | kfree(qp->sqp_proxy_rcv[i].addr); | |
505 | } | |
506 | kfree(qp->sqp_proxy_rcv); | |
507 | } | |
508 | ||
913df8c3 | 509 | static bool qp_has_rq(struct ib_qp_init_attr *attr) |
0a1405da SH |
510 | { |
511 | if (attr->qp_type == IB_QPT_XRC_INI || attr->qp_type == IB_QPT_XRC_TGT) | |
913df8c3 | 512 | return false; |
0a1405da SH |
513 | |
514 | return !attr->srq; | |
515 | } | |
516 | ||
99ec41d0 JM |
517 | static int qp0_enabled_vf(struct mlx4_dev *dev, int qpn) |
518 | { | |
519 | int i; | |
520 | for (i = 0; i < dev->caps.num_ports; i++) { | |
c73c8b1e EBE |
521 | if (qpn == dev->caps.spec_qps[i].qp0_proxy) |
522 | return !!dev->caps.spec_qps[i].qp0_qkey; | |
99ec41d0 JM |
523 | } |
524 | return 0; | |
525 | } | |
526 | ||
7b59f0f9 EBE |
527 | static void mlx4_ib_free_qp_counter(struct mlx4_ib_dev *dev, |
528 | struct mlx4_ib_qp *qp) | |
529 | { | |
530 | mutex_lock(&dev->counters_table[qp->port - 1].mutex); | |
531 | mlx4_counter_free(dev->dev, qp->counter_index->index); | |
532 | list_del(&qp->counter_index->list); | |
533 | mutex_unlock(&dev->counters_table[qp->port - 1].mutex); | |
534 | ||
535 | kfree(qp->counter_index); | |
536 | qp->counter_index = NULL; | |
537 | } | |
538 | ||
3078f5f1 GL |
539 | static int set_qp_rss(struct mlx4_ib_dev *dev, struct mlx4_ib_rss *rss_ctx, |
540 | struct ib_qp_init_attr *init_attr, | |
541 | struct mlx4_ib_create_qp_rss *ucmd) | |
542 | { | |
543 | rss_ctx->base_qpn_tbl_sz = init_attr->rwq_ind_tbl->ind_tbl[0]->wq_num | | |
544 | (init_attr->rwq_ind_tbl->log_ind_tbl_size << 24); | |
545 | ||
546 | if ((ucmd->rx_hash_function == MLX4_IB_RX_HASH_FUNC_TOEPLITZ) && | |
547 | (dev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS_TOP)) { | |
548 | memcpy(rss_ctx->rss_key, ucmd->rx_hash_key, | |
549 | MLX4_EN_RSS_KEY_SIZE); | |
550 | } else { | |
551 | pr_debug("RX Hash function is not supported\n"); | |
552 | return (-EOPNOTSUPP); | |
553 | } | |
554 | ||
4d02ebd9 GL |
555 | if (ucmd->rx_hash_fields_mask & ~(MLX4_IB_RX_HASH_SRC_IPV4 | |
556 | MLX4_IB_RX_HASH_DST_IPV4 | | |
557 | MLX4_IB_RX_HASH_SRC_IPV6 | | |
558 | MLX4_IB_RX_HASH_DST_IPV6 | | |
559 | MLX4_IB_RX_HASH_SRC_PORT_TCP | | |
560 | MLX4_IB_RX_HASH_DST_PORT_TCP | | |
561 | MLX4_IB_RX_HASH_SRC_PORT_UDP | | |
4f9ca2d8 LR |
562 | MLX4_IB_RX_HASH_DST_PORT_UDP | |
563 | MLX4_IB_RX_HASH_INNER)) { | |
4d02ebd9 GL |
564 | pr_debug("RX Hash fields_mask has unsupported mask (0x%llx)\n", |
565 | ucmd->rx_hash_fields_mask); | |
566 | return (-EOPNOTSUPP); | |
567 | } | |
568 | ||
3078f5f1 GL |
569 | if ((ucmd->rx_hash_fields_mask & MLX4_IB_RX_HASH_SRC_IPV4) && |
570 | (ucmd->rx_hash_fields_mask & MLX4_IB_RX_HASH_DST_IPV4)) { | |
571 | rss_ctx->flags = MLX4_RSS_IPV4; | |
572 | } else if ((ucmd->rx_hash_fields_mask & MLX4_IB_RX_HASH_SRC_IPV4) || | |
573 | (ucmd->rx_hash_fields_mask & MLX4_IB_RX_HASH_DST_IPV4)) { | |
574 | pr_debug("RX Hash fields_mask is not supported - both IPv4 SRC and DST must be set\n"); | |
575 | return (-EOPNOTSUPP); | |
576 | } | |
577 | ||
578 | if ((ucmd->rx_hash_fields_mask & MLX4_IB_RX_HASH_SRC_IPV6) && | |
579 | (ucmd->rx_hash_fields_mask & MLX4_IB_RX_HASH_DST_IPV6)) { | |
580 | rss_ctx->flags |= MLX4_RSS_IPV6; | |
581 | } else if ((ucmd->rx_hash_fields_mask & MLX4_IB_RX_HASH_SRC_IPV6) || | |
582 | (ucmd->rx_hash_fields_mask & MLX4_IB_RX_HASH_DST_IPV6)) { | |
583 | pr_debug("RX Hash fields_mask is not supported - both IPv6 SRC and DST must be set\n"); | |
584 | return (-EOPNOTSUPP); | |
585 | } | |
586 | ||
587 | if ((ucmd->rx_hash_fields_mask & MLX4_IB_RX_HASH_SRC_PORT_UDP) && | |
588 | (ucmd->rx_hash_fields_mask & MLX4_IB_RX_HASH_DST_PORT_UDP)) { | |
589 | if (!(dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_UDP_RSS)) { | |
590 | pr_debug("RX Hash fields_mask for UDP is not supported\n"); | |
591 | return (-EOPNOTSUPP); | |
592 | } | |
593 | ||
4d02ebd9 | 594 | if (rss_ctx->flags & MLX4_RSS_IPV4) |
3078f5f1 | 595 | rss_ctx->flags |= MLX4_RSS_UDP_IPV4; |
4d02ebd9 | 596 | if (rss_ctx->flags & MLX4_RSS_IPV6) |
3078f5f1 | 597 | rss_ctx->flags |= MLX4_RSS_UDP_IPV6; |
4d02ebd9 | 598 | if (!(rss_ctx->flags & (MLX4_RSS_IPV6 | MLX4_RSS_IPV4))) { |
3078f5f1 GL |
599 | pr_debug("RX Hash fields_mask is not supported - UDP must be set with IPv4 or IPv6\n"); |
600 | return (-EOPNOTSUPP); | |
601 | } | |
602 | } else if ((ucmd->rx_hash_fields_mask & MLX4_IB_RX_HASH_SRC_PORT_UDP) || | |
603 | (ucmd->rx_hash_fields_mask & MLX4_IB_RX_HASH_DST_PORT_UDP)) { | |
604 | pr_debug("RX Hash fields_mask is not supported - both UDP SRC and DST must be set\n"); | |
605 | return (-EOPNOTSUPP); | |
606 | } | |
607 | ||
608 | if ((ucmd->rx_hash_fields_mask & MLX4_IB_RX_HASH_SRC_PORT_TCP) && | |
609 | (ucmd->rx_hash_fields_mask & MLX4_IB_RX_HASH_DST_PORT_TCP)) { | |
4d02ebd9 | 610 | if (rss_ctx->flags & MLX4_RSS_IPV4) |
3078f5f1 | 611 | rss_ctx->flags |= MLX4_RSS_TCP_IPV4; |
4d02ebd9 | 612 | if (rss_ctx->flags & MLX4_RSS_IPV6) |
3078f5f1 | 613 | rss_ctx->flags |= MLX4_RSS_TCP_IPV6; |
4d02ebd9 | 614 | if (!(rss_ctx->flags & (MLX4_RSS_IPV6 | MLX4_RSS_IPV4))) { |
3078f5f1 GL |
615 | pr_debug("RX Hash fields_mask is not supported - TCP must be set with IPv4 or IPv6\n"); |
616 | return (-EOPNOTSUPP); | |
617 | } | |
3078f5f1 GL |
618 | } else if ((ucmd->rx_hash_fields_mask & MLX4_IB_RX_HASH_SRC_PORT_TCP) || |
619 | (ucmd->rx_hash_fields_mask & MLX4_IB_RX_HASH_DST_PORT_TCP)) { | |
620 | pr_debug("RX Hash fields_mask is not supported - both TCP SRC and DST must be set\n"); | |
621 | return (-EOPNOTSUPP); | |
622 | } | |
623 | ||
07d84f7b GL |
624 | if (ucmd->rx_hash_fields_mask & MLX4_IB_RX_HASH_INNER) { |
625 | if (dev->dev->caps.tunnel_offload_mode == | |
626 | MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) { | |
627 | /* | |
628 | * Hash according to inner headers if exist, otherwise | |
629 | * according to outer headers. | |
630 | */ | |
631 | rss_ctx->flags |= MLX4_RSS_BY_INNER_HEADERS_IPONLY; | |
632 | } else { | |
633 | pr_debug("RSS Hash for inner headers isn't supported\n"); | |
634 | return (-EOPNOTSUPP); | |
635 | } | |
636 | } | |
637 | ||
3078f5f1 GL |
638 | return 0; |
639 | } | |
640 | ||
d7c0557a | 641 | static int create_qp_rss(struct mlx4_ib_dev *dev, |
3078f5f1 GL |
642 | struct ib_qp_init_attr *init_attr, |
643 | struct mlx4_ib_create_qp_rss *ucmd, | |
644 | struct mlx4_ib_qp *qp) | |
645 | { | |
646 | int qpn; | |
647 | int err; | |
648 | ||
649 | qp->mqp.usage = MLX4_RES_USAGE_USER_VERBS; | |
650 | ||
651 | err = mlx4_qp_reserve_range(dev->dev, 1, 1, &qpn, 0, qp->mqp.usage); | |
652 | if (err) | |
653 | return err; | |
654 | ||
655 | err = mlx4_qp_alloc(dev->dev, qpn, &qp->mqp); | |
656 | if (err) | |
657 | goto err_qpn; | |
658 | ||
659 | mutex_init(&qp->mutex); | |
660 | ||
661 | INIT_LIST_HEAD(&qp->gid_list); | |
662 | INIT_LIST_HEAD(&qp->steering_rules); | |
663 | ||
c3f1ee29 | 664 | qp->mlx4_ib_qp_type = MLX4_IB_QPT_RAW_PACKET; |
3078f5f1 GL |
665 | qp->state = IB_QPS_RESET; |
666 | ||
667 | /* Set dummy send resources to be compatible with HV and PRM */ | |
668 | qp->sq_no_prefetch = 1; | |
669 | qp->sq.wqe_cnt = 1; | |
670 | qp->sq.wqe_shift = MLX4_IB_MIN_SQ_STRIDE; | |
671 | qp->buf_size = qp->sq.wqe_cnt << MLX4_IB_MIN_SQ_STRIDE; | |
672 | qp->mtt = (to_mqp( | |
673 | (struct ib_qp *)init_attr->rwq_ind_tbl->ind_tbl[0]))->mtt; | |
674 | ||
675 | qp->rss_ctx = kzalloc(sizeof(*qp->rss_ctx), GFP_KERNEL); | |
676 | if (!qp->rss_ctx) { | |
677 | err = -ENOMEM; | |
678 | goto err_qp_alloc; | |
679 | } | |
680 | ||
681 | err = set_qp_rss(dev, qp->rss_ctx, init_attr, ucmd); | |
682 | if (err) | |
683 | goto err; | |
684 | ||
685 | return 0; | |
686 | ||
687 | err: | |
688 | kfree(qp->rss_ctx); | |
689 | ||
690 | err_qp_alloc: | |
691 | mlx4_qp_remove(dev->dev, &qp->mqp); | |
692 | mlx4_qp_free(dev->dev, &qp->mqp); | |
693 | ||
694 | err_qpn: | |
695 | mlx4_qp_release_range(dev->dev, qpn, 1); | |
696 | return err; | |
697 | } | |
698 | ||
699 | static struct ib_qp *_mlx4_ib_create_qp_rss(struct ib_pd *pd, | |
700 | struct ib_qp_init_attr *init_attr, | |
701 | struct ib_udata *udata) | |
702 | { | |
703 | struct mlx4_ib_qp *qp; | |
704 | struct mlx4_ib_create_qp_rss ucmd = {}; | |
705 | size_t required_cmd_sz; | |
706 | int err; | |
707 | ||
708 | if (!udata) { | |
709 | pr_debug("RSS QP with NULL udata\n"); | |
710 | return ERR_PTR(-EINVAL); | |
711 | } | |
712 | ||
713 | if (udata->outlen) | |
714 | return ERR_PTR(-EOPNOTSUPP); | |
715 | ||
716 | required_cmd_sz = offsetof(typeof(ucmd), reserved1) + | |
717 | sizeof(ucmd.reserved1); | |
718 | if (udata->inlen < required_cmd_sz) { | |
719 | pr_debug("invalid inlen\n"); | |
720 | return ERR_PTR(-EINVAL); | |
721 | } | |
722 | ||
723 | if (ib_copy_from_udata(&ucmd, udata, min(sizeof(ucmd), udata->inlen))) { | |
724 | pr_debug("copy failed\n"); | |
725 | return ERR_PTR(-EFAULT); | |
726 | } | |
727 | ||
f9bfea99 GL |
728 | if (memchr_inv(ucmd.reserved, 0, sizeof(ucmd.reserved))) |
729 | return ERR_PTR(-EOPNOTSUPP); | |
730 | ||
3078f5f1 GL |
731 | if (ucmd.comp_mask || ucmd.reserved1) |
732 | return ERR_PTR(-EOPNOTSUPP); | |
733 | ||
734 | if (udata->inlen > sizeof(ucmd) && | |
735 | !ib_is_udata_cleared(udata, sizeof(ucmd), | |
736 | udata->inlen - sizeof(ucmd))) { | |
737 | pr_debug("inlen is not supported\n"); | |
738 | return ERR_PTR(-EOPNOTSUPP); | |
739 | } | |
740 | ||
741 | if (init_attr->qp_type != IB_QPT_RAW_PACKET) { | |
742 | pr_debug("RSS QP with unsupported QP type %d\n", | |
743 | init_attr->qp_type); | |
744 | return ERR_PTR(-EOPNOTSUPP); | |
745 | } | |
746 | ||
747 | if (init_attr->create_flags) { | |
748 | pr_debug("RSS QP doesn't support create flags\n"); | |
749 | return ERR_PTR(-EOPNOTSUPP); | |
750 | } | |
751 | ||
752 | if (init_attr->send_cq || init_attr->cap.max_send_wr) { | |
753 | pr_debug("RSS QP with unsupported send attributes\n"); | |
754 | return ERR_PTR(-EOPNOTSUPP); | |
755 | } | |
756 | ||
757 | qp = kzalloc(sizeof(*qp), GFP_KERNEL); | |
758 | if (!qp) | |
759 | return ERR_PTR(-ENOMEM); | |
760 | ||
761 | qp->pri.vid = 0xFFFF; | |
762 | qp->alt.vid = 0xFFFF; | |
763 | ||
d7c0557a | 764 | err = create_qp_rss(to_mdev(pd->device), init_attr, &ucmd, qp); |
3078f5f1 GL |
765 | if (err) { |
766 | kfree(qp); | |
767 | return ERR_PTR(err); | |
768 | } | |
769 | ||
770 | qp->ibqp.qp_num = qp->mqp.qpn; | |
771 | ||
772 | return &qp->ibqp; | |
773 | } | |
774 | ||
400b1ebc GL |
775 | /* |
776 | * This function allocates a WQN from a range which is consecutive and aligned | |
777 | * to its size. In case the range is full, then it creates a new range and | |
778 | * allocates WQN from it. The new range will be used for following allocations. | |
779 | */ | |
780 | static int mlx4_ib_alloc_wqn(struct mlx4_ib_ucontext *context, | |
781 | struct mlx4_ib_qp *qp, int range_size, int *wqn) | |
782 | { | |
783 | struct mlx4_ib_dev *dev = to_mdev(context->ibucontext.device); | |
784 | struct mlx4_wqn_range *range; | |
785 | int err = 0; | |
786 | ||
787 | mutex_lock(&context->wqn_ranges_mutex); | |
788 | ||
789 | range = list_first_entry_or_null(&context->wqn_ranges_list, | |
790 | struct mlx4_wqn_range, list); | |
791 | ||
792 | if (!range || (range->refcount == range->size) || range->dirty) { | |
793 | range = kzalloc(sizeof(*range), GFP_KERNEL); | |
794 | if (!range) { | |
795 | err = -ENOMEM; | |
796 | goto out; | |
797 | } | |
798 | ||
799 | err = mlx4_qp_reserve_range(dev->dev, range_size, | |
800 | range_size, &range->base_wqn, 0, | |
801 | qp->mqp.usage); | |
802 | if (err) { | |
803 | kfree(range); | |
804 | goto out; | |
805 | } | |
806 | ||
807 | range->size = range_size; | |
808 | list_add(&range->list, &context->wqn_ranges_list); | |
809 | } else if (range_size != 1) { | |
810 | /* | |
811 | * Requesting a new range (>1) when last range is still open, is | |
812 | * not valid. | |
813 | */ | |
814 | err = -EINVAL; | |
815 | goto out; | |
816 | } | |
817 | ||
818 | qp->wqn_range = range; | |
819 | ||
820 | *wqn = range->base_wqn + range->refcount; | |
821 | ||
822 | range->refcount++; | |
823 | ||
824 | out: | |
825 | mutex_unlock(&context->wqn_ranges_mutex); | |
826 | ||
827 | return err; | |
828 | } | |
829 | ||
830 | static void mlx4_ib_release_wqn(struct mlx4_ib_ucontext *context, | |
831 | struct mlx4_ib_qp *qp, bool dirty_release) | |
832 | { | |
833 | struct mlx4_ib_dev *dev = to_mdev(context->ibucontext.device); | |
834 | struct mlx4_wqn_range *range; | |
835 | ||
836 | mutex_lock(&context->wqn_ranges_mutex); | |
837 | ||
838 | range = qp->wqn_range; | |
839 | ||
840 | range->refcount--; | |
841 | if (!range->refcount) { | |
842 | mlx4_qp_release_range(dev->dev, range->base_wqn, | |
843 | range->size); | |
844 | list_del(&range->list); | |
845 | kfree(range); | |
846 | } else if (dirty_release) { | |
847 | /* | |
848 | * A range which one of its WQNs is destroyed, won't be able to be | |
849 | * reused for further WQN allocations. | |
850 | * The next created WQ will allocate a new range. | |
851 | */ | |
852 | range->dirty = 1; | |
853 | } | |
854 | ||
855 | mutex_unlock(&context->wqn_ranges_mutex); | |
856 | } | |
857 | ||
089b645d LR |
858 | static int create_rq(struct ib_pd *pd, struct ib_qp_init_attr *init_attr, |
859 | struct ib_udata *udata, struct mlx4_ib_qp *qp) | |
860 | { | |
861 | struct mlx4_ib_dev *dev = to_mdev(pd->device); | |
862 | int qpn; | |
863 | int err; | |
864 | struct mlx4_ib_ucontext *context = rdma_udata_to_drv_context( | |
865 | udata, struct mlx4_ib_ucontext, ibucontext); | |
866 | struct mlx4_ib_cq *mcq; | |
867 | unsigned long flags; | |
868 | int range_size; | |
869 | struct mlx4_ib_create_wq wq; | |
870 | size_t copy_len; | |
871 | int shift; | |
872 | int n; | |
873 | ||
874 | qp->mlx4_ib_qp_type = MLX4_IB_QPT_RAW_PACKET; | |
875 | ||
876 | mutex_init(&qp->mutex); | |
877 | spin_lock_init(&qp->sq.lock); | |
878 | spin_lock_init(&qp->rq.lock); | |
879 | INIT_LIST_HEAD(&qp->gid_list); | |
880 | INIT_LIST_HEAD(&qp->steering_rules); | |
881 | ||
882 | qp->state = IB_QPS_RESET; | |
883 | ||
884 | copy_len = min(sizeof(struct mlx4_ib_create_wq), udata->inlen); | |
885 | ||
886 | if (ib_copy_from_udata(&wq, udata, copy_len)) { | |
887 | err = -EFAULT; | |
888 | goto err; | |
889 | } | |
890 | ||
891 | if (wq.comp_mask || wq.reserved[0] || wq.reserved[1] || | |
892 | wq.reserved[2]) { | |
893 | pr_debug("user command isn't supported\n"); | |
894 | err = -EOPNOTSUPP; | |
895 | goto err; | |
896 | } | |
897 | ||
898 | if (wq.log_range_size > ilog2(dev->dev->caps.max_rss_tbl_sz)) { | |
899 | pr_debug("WQN range size must be equal or smaller than %d\n", | |
900 | dev->dev->caps.max_rss_tbl_sz); | |
901 | err = -EOPNOTSUPP; | |
902 | goto err; | |
903 | } | |
904 | range_size = 1 << wq.log_range_size; | |
905 | ||
906 | if (init_attr->create_flags & IB_QP_CREATE_SCATTER_FCS) | |
907 | qp->flags |= MLX4_IB_QP_SCATTER_FCS; | |
908 | ||
913df8c3 | 909 | err = set_rq_size(dev, &init_attr->cap, true, true, qp, qp->inl_recv_sz); |
089b645d LR |
910 | if (err) |
911 | goto err; | |
912 | ||
913 | qp->sq_no_prefetch = 1; | |
914 | qp->sq.wqe_cnt = 1; | |
915 | qp->sq.wqe_shift = MLX4_IB_MIN_SQ_STRIDE; | |
916 | qp->buf_size = (qp->rq.wqe_cnt << qp->rq.wqe_shift) + | |
917 | (qp->sq.wqe_cnt << qp->sq.wqe_shift); | |
918 | ||
9bbf00b0 | 919 | qp->umem = ib_umem_get(pd->device, wq.buf_addr, qp->buf_size, 0); |
089b645d LR |
920 | if (IS_ERR(qp->umem)) { |
921 | err = PTR_ERR(qp->umem); | |
922 | goto err; | |
923 | } | |
924 | ||
925 | n = ib_umem_page_count(qp->umem); | |
926 | shift = mlx4_ib_umem_calc_optimal_mtt_size(qp->umem, 0, &n); | |
927 | err = mlx4_mtt_init(dev->dev, n, shift, &qp->mtt); | |
928 | ||
929 | if (err) | |
930 | goto err_buf; | |
931 | ||
932 | err = mlx4_ib_umem_write_mtt(dev, &qp->mtt, qp->umem); | |
933 | if (err) | |
934 | goto err_mtt; | |
935 | ||
936 | err = mlx4_ib_db_map_user(udata, wq.db_addr, &qp->db); | |
937 | if (err) | |
938 | goto err_mtt; | |
939 | qp->mqp.usage = MLX4_RES_USAGE_USER_VERBS; | |
940 | ||
941 | err = mlx4_ib_alloc_wqn(context, qp, range_size, &qpn); | |
942 | if (err) | |
943 | goto err_wrid; | |
944 | ||
945 | err = mlx4_qp_alloc(dev->dev, qpn, &qp->mqp); | |
946 | if (err) | |
947 | goto err_qpn; | |
948 | ||
949 | /* | |
950 | * Hardware wants QPN written in big-endian order (after | |
951 | * shifting) for send doorbell. Precompute this value to save | |
952 | * a little bit when posting sends. | |
953 | */ | |
954 | qp->doorbell_qpn = swab32(qp->mqp.qpn << 8); | |
955 | ||
956 | qp->mqp.event = mlx4_ib_wq_event; | |
957 | ||
958 | spin_lock_irqsave(&dev->reset_flow_resource_lock, flags); | |
959 | mlx4_ib_lock_cqs(to_mcq(init_attr->send_cq), | |
960 | to_mcq(init_attr->recv_cq)); | |
961 | /* Maintain device to QPs access, needed for further handling | |
962 | * via reset flow | |
963 | */ | |
964 | list_add_tail(&qp->qps_list, &dev->qp_list); | |
965 | /* Maintain CQ to QPs access, needed for further handling | |
966 | * via reset flow | |
967 | */ | |
968 | mcq = to_mcq(init_attr->send_cq); | |
969 | list_add_tail(&qp->cq_send_list, &mcq->send_qp_list); | |
970 | mcq = to_mcq(init_attr->recv_cq); | |
971 | list_add_tail(&qp->cq_recv_list, &mcq->recv_qp_list); | |
972 | mlx4_ib_unlock_cqs(to_mcq(init_attr->send_cq), | |
973 | to_mcq(init_attr->recv_cq)); | |
974 | spin_unlock_irqrestore(&dev->reset_flow_resource_lock, flags); | |
975 | return 0; | |
976 | ||
977 | err_qpn: | |
978 | mlx4_ib_release_wqn(context, qp, 0); | |
979 | err_wrid: | |
980 | mlx4_ib_db_unmap_user(context, &qp->db); | |
981 | ||
982 | err_mtt: | |
983 | mlx4_mtt_cleanup(dev->dev, &qp->mtt); | |
984 | err_buf: | |
985 | ib_umem_release(qp->umem); | |
986 | err: | |
987 | return err; | |
988 | } | |
989 | ||
990 | static int create_qp_common(struct ib_pd *pd, struct ib_qp_init_attr *init_attr, | |
8900b894 LR |
991 | struct ib_udata *udata, int sqpn, |
992 | struct mlx4_ib_qp **caller_qp) | |
225c7b1f | 993 | { |
089b645d | 994 | struct mlx4_ib_dev *dev = to_mdev(pd->device); |
a3cdcbfa | 995 | int qpn; |
225c7b1f | 996 | int err; |
b42dde47 | 997 | struct mlx4_ib_sqp *sqp = NULL; |
1ffeb2eb | 998 | struct mlx4_ib_qp *qp; |
89944450 SR |
999 | struct mlx4_ib_ucontext *context = rdma_udata_to_drv_context( |
1000 | udata, struct mlx4_ib_ucontext, ibucontext); | |
1ffeb2eb | 1001 | enum mlx4_ib_qp_type qp_type = (enum mlx4_ib_qp_type) init_attr->qp_type; |
35f05dab YH |
1002 | struct mlx4_ib_cq *mcq; |
1003 | unsigned long flags; | |
1ffeb2eb JM |
1004 | |
1005 | /* When tunneling special qps, we use a plain UD qp */ | |
1006 | if (sqpn) { | |
1007 | if (mlx4_is_mfunc(dev->dev) && | |
1008 | (!mlx4_is_master(dev->dev) || | |
1009 | !(init_attr->create_flags & MLX4_IB_SRIOV_SQP))) { | |
1010 | if (init_attr->qp_type == IB_QPT_GSI) | |
1011 | qp_type = MLX4_IB_QPT_PROXY_GSI; | |
99ec41d0 JM |
1012 | else { |
1013 | if (mlx4_is_master(dev->dev) || | |
1014 | qp0_enabled_vf(dev->dev, sqpn)) | |
1015 | qp_type = MLX4_IB_QPT_PROXY_SMI_OWNER; | |
1016 | else | |
1017 | qp_type = MLX4_IB_QPT_PROXY_SMI; | |
1018 | } | |
1ffeb2eb JM |
1019 | } |
1020 | qpn = sqpn; | |
1021 | /* add extra sg entry for tunneling */ | |
1022 | init_attr->cap.max_recv_sge++; | |
1023 | } else if (init_attr->create_flags & MLX4_IB_SRIOV_TUNNEL_QP) { | |
1024 | struct mlx4_ib_qp_tunnel_init_attr *tnl_init = | |
1025 | container_of(init_attr, | |
1026 | struct mlx4_ib_qp_tunnel_init_attr, init_attr); | |
1027 | if ((tnl_init->proxy_qp_type != IB_QPT_SMI && | |
1028 | tnl_init->proxy_qp_type != IB_QPT_GSI) || | |
1029 | !mlx4_is_master(dev->dev)) | |
1030 | return -EINVAL; | |
1031 | if (tnl_init->proxy_qp_type == IB_QPT_GSI) | |
1032 | qp_type = MLX4_IB_QPT_TUN_GSI; | |
99ec41d0 JM |
1033 | else if (tnl_init->slave == mlx4_master_func_num(dev->dev) || |
1034 | mlx4_vf_smi_enabled(dev->dev, tnl_init->slave, | |
1035 | tnl_init->port)) | |
1ffeb2eb JM |
1036 | qp_type = MLX4_IB_QPT_TUN_SMI_OWNER; |
1037 | else | |
1038 | qp_type = MLX4_IB_QPT_TUN_SMI; | |
47605df9 JM |
1039 | /* we are definitely in the PPF here, since we are creating |
1040 | * tunnel QPs. base_tunnel_sqpn is therefore valid. */ | |
1041 | qpn = dev->dev->phys_caps.base_tunnel_sqpn + 8 * tnl_init->slave | |
1042 | + tnl_init->proxy_qp_type * 2 + tnl_init->port - 1; | |
1ffeb2eb JM |
1043 | sqpn = qpn; |
1044 | } | |
1045 | ||
1046 | if (!*caller_qp) { | |
1047 | if (qp_type == MLX4_IB_QPT_SMI || qp_type == MLX4_IB_QPT_GSI || | |
1048 | (qp_type & (MLX4_IB_QPT_PROXY_SMI | MLX4_IB_QPT_PROXY_SMI_OWNER | | |
1049 | MLX4_IB_QPT_PROXY_GSI | MLX4_IB_QPT_TUN_SMI_OWNER))) { | |
8900b894 | 1050 | sqp = kzalloc(sizeof(struct mlx4_ib_sqp), GFP_KERNEL); |
1ffeb2eb JM |
1051 | if (!sqp) |
1052 | return -ENOMEM; | |
1053 | qp = &sqp->qp; | |
1054 | } else { | |
8900b894 | 1055 | qp = kzalloc(sizeof(struct mlx4_ib_qp), GFP_KERNEL); |
1ffeb2eb JM |
1056 | if (!qp) |
1057 | return -ENOMEM; | |
1058 | } | |
089b645d LR |
1059 | qp->pri.vid = 0xFFFF; |
1060 | qp->alt.vid = 0xFFFF; | |
1ffeb2eb JM |
1061 | } else |
1062 | qp = *caller_qp; | |
1063 | ||
1064 | qp->mlx4_ib_qp_type = qp_type; | |
225c7b1f RD |
1065 | |
1066 | mutex_init(&qp->mutex); | |
1067 | spin_lock_init(&qp->sq.lock); | |
1068 | spin_lock_init(&qp->rq.lock); | |
fa417f7b | 1069 | INIT_LIST_HEAD(&qp->gid_list); |
0ff1fb65 | 1070 | INIT_LIST_HEAD(&qp->steering_rules); |
225c7b1f | 1071 | |
089b645d | 1072 | qp->state = IB_QPS_RESET; |
ea54b10c JM |
1073 | if (init_attr->sq_sig_type == IB_SIGNAL_ALL_WR) |
1074 | qp->sq_signal_bits = cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE); | |
225c7b1f | 1075 | |
e00b64f7 | 1076 | if (udata) { |
089b645d | 1077 | struct mlx4_ib_create_qp ucmd; |
400b1ebc | 1078 | size_t copy_len; |
ed8637d3 GL |
1079 | int shift; |
1080 | int n; | |
400b1ebc | 1081 | |
089b645d | 1082 | copy_len = sizeof(struct mlx4_ib_create_qp); |
225c7b1f | 1083 | |
400b1ebc | 1084 | if (ib_copy_from_udata(&ucmd, udata, copy_len)) { |
225c7b1f RD |
1085 | err = -EFAULT; |
1086 | goto err; | |
1087 | } | |
1088 | ||
089b645d | 1089 | qp->inl_recv_sz = ucmd.inl_recv_sz; |
0e6e7416 | 1090 | |
6d06c9aa GL |
1091 | if (init_attr->create_flags & IB_QP_CREATE_SCATTER_FCS) { |
1092 | if (!(dev->dev->caps.flags & | |
1093 | MLX4_DEV_CAP_FLAG_FCS_KEEP)) { | |
1094 | pr_debug("scatter FCS is unsupported\n"); | |
1095 | err = -EOPNOTSUPP; | |
1096 | goto err; | |
1097 | } | |
1098 | ||
1099 | qp->flags |= MLX4_IB_QP_SCATTER_FCS; | |
1100 | } | |
1101 | ||
e00b64f7 | 1102 | err = set_rq_size(dev, &init_attr->cap, udata, |
400b1ebc | 1103 | qp_has_rq(init_attr), qp, qp->inl_recv_sz); |
2446304d EC |
1104 | if (err) |
1105 | goto err; | |
1106 | ||
089b645d | 1107 | qp->sq_no_prefetch = ucmd.sq_no_prefetch; |
400b1ebc | 1108 | |
089b645d LR |
1109 | err = set_user_sq_size(dev, qp, &ucmd); |
1110 | if (err) | |
1111 | goto err; | |
400b1ebc | 1112 | |
9bbf00b0 MS |
1113 | qp->umem = |
1114 | ib_umem_get(pd->device, ucmd.buf_addr, qp->buf_size, 0); | |
225c7b1f RD |
1115 | if (IS_ERR(qp->umem)) { |
1116 | err = PTR_ERR(qp->umem); | |
1117 | goto err; | |
1118 | } | |
1119 | ||
ed8637d3 GL |
1120 | n = ib_umem_page_count(qp->umem); |
1121 | shift = mlx4_ib_umem_calc_optimal_mtt_size(qp->umem, 0, &n); | |
1122 | err = mlx4_mtt_init(dev->dev, n, shift, &qp->mtt); | |
1123 | ||
225c7b1f RD |
1124 | if (err) |
1125 | goto err_buf; | |
1126 | ||
1127 | err = mlx4_ib_umem_write_mtt(dev, &qp->mtt, qp->umem); | |
1128 | if (err) | |
1129 | goto err_mtt; | |
1130 | ||
0a1405da | 1131 | if (qp_has_rq(init_attr)) { |
089b645d | 1132 | err = mlx4_ib_db_map_user(udata, ucmd.db_addr, &qp->db); |
02d89b87 RD |
1133 | if (err) |
1134 | goto err_mtt; | |
1135 | } | |
f3301870 | 1136 | qp->mqp.usage = MLX4_RES_USAGE_USER_VERBS; |
225c7b1f | 1137 | } else { |
e00b64f7 | 1138 | err = set_rq_size(dev, &init_attr->cap, udata, |
ea30b966 MG |
1139 | qp_has_rq(init_attr), qp, 0); |
1140 | if (err) | |
1141 | goto err; | |
1142 | ||
0e6e7416 RD |
1143 | qp->sq_no_prefetch = 0; |
1144 | ||
b832be1e EC |
1145 | if (init_attr->create_flags & IB_QP_CREATE_IPOIB_UD_LSO) |
1146 | qp->flags |= MLX4_IB_QP_LSO; | |
1147 | ||
c1c98501 MB |
1148 | if (init_attr->create_flags & IB_QP_CREATE_NETIF_QP) { |
1149 | if (dev->steering_support == | |
1150 | MLX4_STEERING_MODE_DEVICE_MANAGED) | |
1151 | qp->flags |= MLX4_IB_QP_NETIF; | |
0641f236 LR |
1152 | else { |
1153 | err = -EINVAL; | |
c1c98501 | 1154 | goto err; |
0641f236 | 1155 | } |
c1c98501 MB |
1156 | } |
1157 | ||
f95ccffc | 1158 | err = set_kernel_sq_size(dev, &init_attr->cap, qp_type, qp); |
2446304d EC |
1159 | if (err) |
1160 | goto err; | |
1161 | ||
0a1405da | 1162 | if (qp_has_rq(init_attr)) { |
8900b894 | 1163 | err = mlx4_db_alloc(dev->dev, &qp->db, 0); |
02d89b87 RD |
1164 | if (err) |
1165 | goto err; | |
225c7b1f | 1166 | |
02d89b87 RD |
1167 | *qp->db.db = 0; |
1168 | } | |
225c7b1f | 1169 | |
f95ccffc | 1170 | if (mlx4_buf_alloc(dev->dev, qp->buf_size, PAGE_SIZE * 2, |
8900b894 | 1171 | &qp->buf)) { |
f95ccffc JM |
1172 | err = -ENOMEM; |
1173 | goto err_db; | |
225c7b1f RD |
1174 | } |
1175 | ||
1176 | err = mlx4_mtt_init(dev->dev, qp->buf.npages, qp->buf.page_shift, | |
1177 | &qp->mtt); | |
1178 | if (err) | |
1179 | goto err_buf; | |
1180 | ||
8900b894 | 1181 | err = mlx4_buf_write_mtt(dev->dev, &qp->mtt, &qp->buf); |
225c7b1f RD |
1182 | if (err) |
1183 | goto err_mtt; | |
1184 | ||
e9105cde LD |
1185 | qp->sq.wrid = kvmalloc_array(qp->sq.wqe_cnt, |
1186 | sizeof(u64), GFP_KERNEL); | |
1187 | qp->rq.wrid = kvmalloc_array(qp->rq.wqe_cnt, | |
1188 | sizeof(u64), GFP_KERNEL); | |
225c7b1f RD |
1189 | if (!qp->sq.wrid || !qp->rq.wrid) { |
1190 | err = -ENOMEM; | |
1191 | goto err_wrid; | |
1192 | } | |
f3301870 | 1193 | qp->mqp.usage = MLX4_RES_USAGE_DRIVER; |
225c7b1f RD |
1194 | } |
1195 | ||
a3cdcbfa | 1196 | if (sqpn) { |
1ffeb2eb JM |
1197 | if (qp->mlx4_ib_qp_type & (MLX4_IB_QPT_PROXY_SMI_OWNER | |
1198 | MLX4_IB_QPT_PROXY_SMI | MLX4_IB_QPT_PROXY_GSI)) { | |
1199 | if (alloc_proxy_bufs(pd->device, qp)) { | |
1200 | err = -ENOMEM; | |
1201 | goto err_wrid; | |
1202 | } | |
1203 | } | |
a3cdcbfa | 1204 | } else { |
ddae0349 EE |
1205 | /* Raw packet QPNs may not have bits 6,7 set in their qp_num; |
1206 | * otherwise, the WQE BlueFlame setup flow wrongly causes | |
1207 | * VLAN insertion. */ | |
3987a2d3 | 1208 | if (init_attr->qp_type == IB_QPT_RAW_PACKET) |
ddae0349 | 1209 | err = mlx4_qp_reserve_range(dev->dev, 1, 1, &qpn, |
d57febe1 MB |
1210 | (init_attr->cap.max_send_wr ? |
1211 | MLX4_RESERVE_ETH_BF_QP : 0) | | |
1212 | (init_attr->cap.max_recv_wr ? | |
f3301870 MS |
1213 | MLX4_RESERVE_A0_QP : 0), |
1214 | qp->mqp.usage); | |
3987a2d3 | 1215 | else |
c1c98501 MB |
1216 | if (qp->flags & MLX4_IB_QP_NETIF) |
1217 | err = mlx4_ib_steer_qp_alloc(dev, 1, &qpn); | |
1218 | else | |
1219 | err = mlx4_qp_reserve_range(dev->dev, 1, 1, | |
f3301870 | 1220 | &qpn, 0, qp->mqp.usage); |
a3cdcbfa | 1221 | if (err) |
1ffeb2eb | 1222 | goto err_proxy; |
a3cdcbfa YP |
1223 | } |
1224 | ||
fbfb6625 EBE |
1225 | if (init_attr->create_flags & IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK) |
1226 | qp->flags |= MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK; | |
1227 | ||
8900b894 | 1228 | err = mlx4_qp_alloc(dev->dev, qpn, &qp->mqp); |
225c7b1f | 1229 | if (err) |
a3cdcbfa | 1230 | goto err_qpn; |
225c7b1f | 1231 | |
0a1405da SH |
1232 | if (init_attr->qp_type == IB_QPT_XRC_TGT) |
1233 | qp->mqp.qpn |= (1 << 23); | |
1234 | ||
225c7b1f RD |
1235 | /* |
1236 | * Hardware wants QPN written in big-endian order (after | |
1237 | * shifting) for send doorbell. Precompute this value to save | |
1238 | * a little bit when posting sends. | |
1239 | */ | |
1240 | qp->doorbell_qpn = swab32(qp->mqp.qpn << 8); | |
1241 | ||
089b645d | 1242 | qp->mqp.event = mlx4_ib_qp_event; |
400b1ebc | 1243 | |
1ffeb2eb JM |
1244 | if (!*caller_qp) |
1245 | *caller_qp = qp; | |
35f05dab YH |
1246 | |
1247 | spin_lock_irqsave(&dev->reset_flow_resource_lock, flags); | |
1248 | mlx4_ib_lock_cqs(to_mcq(init_attr->send_cq), | |
1249 | to_mcq(init_attr->recv_cq)); | |
1250 | /* Maintain device to QPs access, needed for further handling | |
1251 | * via reset flow | |
1252 | */ | |
1253 | list_add_tail(&qp->qps_list, &dev->qp_list); | |
1254 | /* Maintain CQ to QPs access, needed for further handling | |
1255 | * via reset flow | |
1256 | */ | |
1257 | mcq = to_mcq(init_attr->send_cq); | |
1258 | list_add_tail(&qp->cq_send_list, &mcq->send_qp_list); | |
1259 | mcq = to_mcq(init_attr->recv_cq); | |
1260 | list_add_tail(&qp->cq_recv_list, &mcq->recv_qp_list); | |
1261 | mlx4_ib_unlock_cqs(to_mcq(init_attr->send_cq), | |
1262 | to_mcq(init_attr->recv_cq)); | |
1263 | spin_unlock_irqrestore(&dev->reset_flow_resource_lock, flags); | |
225c7b1f RD |
1264 | return 0; |
1265 | ||
a3cdcbfa | 1266 | err_qpn: |
c1c98501 MB |
1267 | if (!sqpn) { |
1268 | if (qp->flags & MLX4_IB_QP_NETIF) | |
1269 | mlx4_ib_steer_qp_free(dev, qpn, 1); | |
1270 | else | |
1271 | mlx4_qp_release_range(dev->dev, qpn, 1); | |
1272 | } | |
1ffeb2eb JM |
1273 | err_proxy: |
1274 | if (qp->mlx4_ib_qp_type == MLX4_IB_QPT_PROXY_GSI) | |
1275 | free_proxy_bufs(pd->device, qp); | |
225c7b1f | 1276 | err_wrid: |
e00b64f7 | 1277 | if (udata) { |
0a1405da | 1278 | if (qp_has_rq(init_attr)) |
89944450 | 1279 | mlx4_ib_db_unmap_user(context, &qp->db); |
23f1b384 | 1280 | } else { |
0ef2f05c WW |
1281 | kvfree(qp->sq.wrid); |
1282 | kvfree(qp->rq.wrid); | |
225c7b1f RD |
1283 | } |
1284 | ||
1285 | err_mtt: | |
1286 | mlx4_mtt_cleanup(dev->dev, &qp->mtt); | |
1287 | ||
1288 | err_buf: | |
836a0fbb | 1289 | if (!qp->umem) |
225c7b1f | 1290 | mlx4_buf_free(dev->dev, qp->buf_size, &qp->buf); |
836a0fbb | 1291 | ib_umem_release(qp->umem); |
225c7b1f RD |
1292 | |
1293 | err_db: | |
e00b64f7 | 1294 | if (!udata && qp_has_rq(init_attr)) |
6296883c | 1295 | mlx4_db_free(dev->dev, &qp->db); |
225c7b1f RD |
1296 | |
1297 | err: | |
2dd8e44c | 1298 | if (!sqp && !*caller_qp) |
1ffeb2eb | 1299 | kfree(qp); |
2dd8e44c YS |
1300 | kfree(sqp); |
1301 | ||
225c7b1f RD |
1302 | return err; |
1303 | } | |
1304 | ||
1305 | static enum mlx4_qp_state to_mlx4_state(enum ib_qp_state state) | |
1306 | { | |
1307 | switch (state) { | |
1308 | case IB_QPS_RESET: return MLX4_QP_STATE_RST; | |
1309 | case IB_QPS_INIT: return MLX4_QP_STATE_INIT; | |
1310 | case IB_QPS_RTR: return MLX4_QP_STATE_RTR; | |
1311 | case IB_QPS_RTS: return MLX4_QP_STATE_RTS; | |
1312 | case IB_QPS_SQD: return MLX4_QP_STATE_SQD; | |
1313 | case IB_QPS_SQE: return MLX4_QP_STATE_SQER; | |
1314 | case IB_QPS_ERR: return MLX4_QP_STATE_ERR; | |
1315 | default: return -1; | |
1316 | } | |
1317 | } | |
1318 | ||
1319 | static void mlx4_ib_lock_cqs(struct mlx4_ib_cq *send_cq, struct mlx4_ib_cq *recv_cq) | |
338a8fad | 1320 | __acquires(&send_cq->lock) __acquires(&recv_cq->lock) |
225c7b1f | 1321 | { |
338a8fad | 1322 | if (send_cq == recv_cq) { |
35f05dab | 1323 | spin_lock(&send_cq->lock); |
338a8fad RD |
1324 | __acquire(&recv_cq->lock); |
1325 | } else if (send_cq->mcq.cqn < recv_cq->mcq.cqn) { | |
35f05dab | 1326 | spin_lock(&send_cq->lock); |
225c7b1f RD |
1327 | spin_lock_nested(&recv_cq->lock, SINGLE_DEPTH_NESTING); |
1328 | } else { | |
35f05dab | 1329 | spin_lock(&recv_cq->lock); |
225c7b1f RD |
1330 | spin_lock_nested(&send_cq->lock, SINGLE_DEPTH_NESTING); |
1331 | } | |
1332 | } | |
1333 | ||
1334 | static void mlx4_ib_unlock_cqs(struct mlx4_ib_cq *send_cq, struct mlx4_ib_cq *recv_cq) | |
338a8fad | 1335 | __releases(&send_cq->lock) __releases(&recv_cq->lock) |
225c7b1f | 1336 | { |
338a8fad RD |
1337 | if (send_cq == recv_cq) { |
1338 | __release(&recv_cq->lock); | |
35f05dab | 1339 | spin_unlock(&send_cq->lock); |
338a8fad | 1340 | } else if (send_cq->mcq.cqn < recv_cq->mcq.cqn) { |
225c7b1f | 1341 | spin_unlock(&recv_cq->lock); |
35f05dab | 1342 | spin_unlock(&send_cq->lock); |
225c7b1f RD |
1343 | } else { |
1344 | spin_unlock(&send_cq->lock); | |
35f05dab | 1345 | spin_unlock(&recv_cq->lock); |
225c7b1f RD |
1346 | } |
1347 | } | |
1348 | ||
fa417f7b EC |
1349 | static void del_gid_entries(struct mlx4_ib_qp *qp) |
1350 | { | |
1351 | struct mlx4_ib_gid_entry *ge, *tmp; | |
1352 | ||
1353 | list_for_each_entry_safe(ge, tmp, &qp->gid_list, list) { | |
1354 | list_del(&ge->list); | |
1355 | kfree(ge); | |
1356 | } | |
1357 | } | |
1358 | ||
0a1405da SH |
1359 | static struct mlx4_ib_pd *get_pd(struct mlx4_ib_qp *qp) |
1360 | { | |
1361 | if (qp->ibqp.qp_type == IB_QPT_XRC_TGT) | |
1362 | return to_mpd(to_mxrcd(qp->ibqp.xrcd)->pd); | |
1363 | else | |
1364 | return to_mpd(qp->ibqp.pd); | |
1365 | } | |
1366 | ||
400b1ebc | 1367 | static void get_cqs(struct mlx4_ib_qp *qp, enum mlx4_ib_source_type src, |
0a1405da SH |
1368 | struct mlx4_ib_cq **send_cq, struct mlx4_ib_cq **recv_cq) |
1369 | { | |
1370 | switch (qp->ibqp.qp_type) { | |
1371 | case IB_QPT_XRC_TGT: | |
1372 | *send_cq = to_mcq(to_mxrcd(qp->ibqp.xrcd)->cq); | |
1373 | *recv_cq = *send_cq; | |
1374 | break; | |
1375 | case IB_QPT_XRC_INI: | |
1376 | *send_cq = to_mcq(qp->ibqp.send_cq); | |
1377 | *recv_cq = *send_cq; | |
1378 | break; | |
1379 | default: | |
400b1ebc GL |
1380 | *recv_cq = (src == MLX4_IB_QP_SRC) ? to_mcq(qp->ibqp.recv_cq) : |
1381 | to_mcq(qp->ibwq.cq); | |
1382 | *send_cq = (src == MLX4_IB_QP_SRC) ? to_mcq(qp->ibqp.send_cq) : | |
1383 | *recv_cq; | |
0a1405da SH |
1384 | break; |
1385 | } | |
1386 | } | |
1387 | ||
3078f5f1 GL |
1388 | static void destroy_qp_rss(struct mlx4_ib_dev *dev, struct mlx4_ib_qp *qp) |
1389 | { | |
1390 | if (qp->state != IB_QPS_RESET) { | |
1391 | int i; | |
1392 | ||
1393 | for (i = 0; i < (1 << qp->ibqp.rwq_ind_tbl->log_ind_tbl_size); | |
1394 | i++) { | |
1395 | struct ib_wq *ibwq = qp->ibqp.rwq_ind_tbl->ind_tbl[i]; | |
1396 | struct mlx4_ib_qp *wq = to_mqp((struct ib_qp *)ibwq); | |
1397 | ||
1398 | mutex_lock(&wq->mutex); | |
1399 | ||
1400 | wq->rss_usecnt--; | |
1401 | ||
1402 | mutex_unlock(&wq->mutex); | |
1403 | } | |
1404 | ||
1405 | if (mlx4_qp_modify(dev->dev, NULL, to_mlx4_state(qp->state), | |
1406 | MLX4_QP_STATE_RST, NULL, 0, 0, &qp->mqp)) | |
1407 | pr_warn("modify QP %06x to RESET failed.\n", | |
1408 | qp->mqp.qpn); | |
1409 | } | |
1410 | ||
1411 | mlx4_qp_remove(dev->dev, &qp->mqp); | |
1412 | mlx4_qp_free(dev->dev, &qp->mqp); | |
1413 | mlx4_qp_release_range(dev->dev, qp->mqp.qpn, 1); | |
1414 | del_gid_entries(qp); | |
1415 | kfree(qp->rss_ctx); | |
1416 | } | |
1417 | ||
225c7b1f | 1418 | static void destroy_qp_common(struct mlx4_ib_dev *dev, struct mlx4_ib_qp *qp, |
bdeacabd SR |
1419 | enum mlx4_ib_source_type src, |
1420 | struct ib_udata *udata) | |
225c7b1f RD |
1421 | { |
1422 | struct mlx4_ib_cq *send_cq, *recv_cq; | |
35f05dab | 1423 | unsigned long flags; |
225c7b1f | 1424 | |
2f5bb473 | 1425 | if (qp->state != IB_QPS_RESET) { |
225c7b1f RD |
1426 | if (mlx4_qp_modify(dev->dev, NULL, to_mlx4_state(qp->state), |
1427 | MLX4_QP_STATE_RST, NULL, 0, 0, &qp->mqp)) | |
987c8f8f | 1428 | pr_warn("modify QP %06x to RESET failed.\n", |
225c7b1f | 1429 | qp->mqp.qpn); |
25476b02 | 1430 | if (qp->pri.smac || (!qp->pri.smac && qp->pri.smac_port)) { |
2f5bb473 JM |
1431 | mlx4_unregister_mac(dev->dev, qp->pri.smac_port, qp->pri.smac); |
1432 | qp->pri.smac = 0; | |
25476b02 | 1433 | qp->pri.smac_port = 0; |
2f5bb473 JM |
1434 | } |
1435 | if (qp->alt.smac) { | |
1436 | mlx4_unregister_mac(dev->dev, qp->alt.smac_port, qp->alt.smac); | |
1437 | qp->alt.smac = 0; | |
1438 | } | |
1439 | if (qp->pri.vid < 0x1000) { | |
1440 | mlx4_unregister_vlan(dev->dev, qp->pri.vlan_port, qp->pri.vid); | |
1441 | qp->pri.vid = 0xFFFF; | |
1442 | qp->pri.candidate_vid = 0xFFFF; | |
1443 | qp->pri.update_vid = 0; | |
1444 | } | |
1445 | if (qp->alt.vid < 0x1000) { | |
1446 | mlx4_unregister_vlan(dev->dev, qp->alt.vlan_port, qp->alt.vid); | |
1447 | qp->alt.vid = 0xFFFF; | |
1448 | qp->alt.candidate_vid = 0xFFFF; | |
1449 | qp->alt.update_vid = 0; | |
1450 | } | |
1451 | } | |
225c7b1f | 1452 | |
400b1ebc | 1453 | get_cqs(qp, src, &send_cq, &recv_cq); |
225c7b1f | 1454 | |
35f05dab | 1455 | spin_lock_irqsave(&dev->reset_flow_resource_lock, flags); |
225c7b1f RD |
1456 | mlx4_ib_lock_cqs(send_cq, recv_cq); |
1457 | ||
35f05dab YH |
1458 | /* del from lists under both locks above to protect reset flow paths */ |
1459 | list_del(&qp->qps_list); | |
1460 | list_del(&qp->cq_send_list); | |
1461 | list_del(&qp->cq_recv_list); | |
bdeacabd | 1462 | if (!udata) { |
225c7b1f RD |
1463 | __mlx4_ib_cq_clean(recv_cq, qp->mqp.qpn, |
1464 | qp->ibqp.srq ? to_msrq(qp->ibqp.srq): NULL); | |
1465 | if (send_cq != recv_cq) | |
1466 | __mlx4_ib_cq_clean(send_cq, qp->mqp.qpn, NULL); | |
1467 | } | |
1468 | ||
1469 | mlx4_qp_remove(dev->dev, &qp->mqp); | |
1470 | ||
1471 | mlx4_ib_unlock_cqs(send_cq, recv_cq); | |
35f05dab | 1472 | spin_unlock_irqrestore(&dev->reset_flow_resource_lock, flags); |
225c7b1f RD |
1473 | |
1474 | mlx4_qp_free(dev->dev, &qp->mqp); | |
a3cdcbfa | 1475 | |
c1c98501 MB |
1476 | if (!is_sqp(dev, qp) && !is_tunnel_qp(dev, qp)) { |
1477 | if (qp->flags & MLX4_IB_QP_NETIF) | |
1478 | mlx4_ib_steer_qp_free(dev, qp->mqp.qpn, 1); | |
400b1ebc | 1479 | else if (src == MLX4_IB_RWQ_SRC) |
bdeacabd SR |
1480 | mlx4_ib_release_wqn( |
1481 | rdma_udata_to_drv_context( | |
1482 | udata, | |
1483 | struct mlx4_ib_ucontext, | |
1484 | ibucontext), | |
1485 | qp, 1); | |
c1c98501 MB |
1486 | else |
1487 | mlx4_qp_release_range(dev->dev, qp->mqp.qpn, 1); | |
1488 | } | |
a3cdcbfa | 1489 | |
225c7b1f RD |
1490 | mlx4_mtt_cleanup(dev->dev, &qp->mtt); |
1491 | ||
bdeacabd | 1492 | if (udata) { |
400b1ebc | 1493 | if (qp->rq.wqe_cnt) { |
bdeacabd SR |
1494 | struct mlx4_ib_ucontext *mcontext = |
1495 | rdma_udata_to_drv_context( | |
1496 | udata, | |
1497 | struct mlx4_ib_ucontext, | |
1498 | ibucontext); | |
1499 | ||
400b1ebc GL |
1500 | mlx4_ib_db_unmap_user(mcontext, &qp->db); |
1501 | } | |
225c7b1f | 1502 | } else { |
0ef2f05c WW |
1503 | kvfree(qp->sq.wrid); |
1504 | kvfree(qp->rq.wrid); | |
1ffeb2eb JM |
1505 | if (qp->mlx4_ib_qp_type & (MLX4_IB_QPT_PROXY_SMI_OWNER | |
1506 | MLX4_IB_QPT_PROXY_SMI | MLX4_IB_QPT_PROXY_GSI)) | |
1507 | free_proxy_bufs(&dev->ib_dev, qp); | |
225c7b1f | 1508 | mlx4_buf_free(dev->dev, qp->buf_size, &qp->buf); |
0a1405da | 1509 | if (qp->rq.wqe_cnt) |
6296883c | 1510 | mlx4_db_free(dev->dev, &qp->db); |
225c7b1f | 1511 | } |
836a0fbb | 1512 | ib_umem_release(qp->umem); |
fa417f7b EC |
1513 | |
1514 | del_gid_entries(qp); | |
225c7b1f RD |
1515 | } |
1516 | ||
47605df9 JM |
1517 | static u32 get_sqp_num(struct mlx4_ib_dev *dev, struct ib_qp_init_attr *attr) |
1518 | { | |
1519 | /* Native or PPF */ | |
1520 | if (!mlx4_is_mfunc(dev->dev) || | |
1521 | (mlx4_is_master(dev->dev) && | |
1522 | attr->create_flags & MLX4_IB_SRIOV_SQP)) { | |
1523 | return dev->dev->phys_caps.base_sqpn + | |
1524 | (attr->qp_type == IB_QPT_SMI ? 0 : 2) + | |
1525 | attr->port_num - 1; | |
1526 | } | |
1527 | /* PF or VF -- creating proxies */ | |
1528 | if (attr->qp_type == IB_QPT_SMI) | |
c73c8b1e | 1529 | return dev->dev->caps.spec_qps[attr->port_num - 1].qp0_proxy; |
47605df9 | 1530 | else |
c73c8b1e | 1531 | return dev->dev->caps.spec_qps[attr->port_num - 1].qp1_proxy; |
47605df9 JM |
1532 | } |
1533 | ||
e1b866c6 MS |
1534 | static struct ib_qp *_mlx4_ib_create_qp(struct ib_pd *pd, |
1535 | struct ib_qp_init_attr *init_attr, | |
1536 | struct ib_udata *udata) | |
225c7b1f | 1537 | { |
1ffeb2eb | 1538 | struct mlx4_ib_qp *qp = NULL; |
225c7b1f | 1539 | int err; |
fbfb6625 | 1540 | int sup_u_create_flags = MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK; |
0a1405da | 1541 | u16 xrcdn = 0; |
225c7b1f | 1542 | |
3078f5f1 GL |
1543 | if (init_attr->rwq_ind_tbl) |
1544 | return _mlx4_ib_create_qp_rss(pd, init_attr, udata); | |
1545 | ||
521e575b | 1546 | /* |
1ffeb2eb JM |
1547 | * We only support LSO, vendor flag1, and multicast loopback blocking, |
1548 | * and only for kernel UD QPs. | |
521e575b | 1549 | */ |
1ffeb2eb JM |
1550 | if (init_attr->create_flags & ~(MLX4_IB_QP_LSO | |
1551 | MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK | | |
c1c98501 MB |
1552 | MLX4_IB_SRIOV_TUNNEL_QP | |
1553 | MLX4_IB_SRIOV_SQP | | |
40f2287b | 1554 | MLX4_IB_QP_NETIF | |
8900b894 | 1555 | MLX4_IB_QP_CREATE_ROCE_V2_GSI)) |
b832be1e | 1556 | return ERR_PTR(-EINVAL); |
521e575b | 1557 | |
c1c98501 MB |
1558 | if (init_attr->create_flags & IB_QP_CREATE_NETIF_QP) { |
1559 | if (init_attr->qp_type != IB_QPT_UD) | |
1560 | return ERR_PTR(-EINVAL); | |
1561 | } | |
1562 | ||
e1b866c6 MS |
1563 | if (init_attr->create_flags) { |
1564 | if (udata && init_attr->create_flags & ~(sup_u_create_flags)) | |
1565 | return ERR_PTR(-EINVAL); | |
1566 | ||
1567 | if ((init_attr->create_flags & ~(MLX4_IB_SRIOV_SQP | | |
e1b866c6 MS |
1568 | MLX4_IB_QP_CREATE_ROCE_V2_GSI | |
1569 | MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK) && | |
1570 | init_attr->qp_type != IB_QPT_UD) || | |
1571 | (init_attr->create_flags & MLX4_IB_SRIOV_SQP && | |
1572 | init_attr->qp_type > IB_QPT_GSI) || | |
1573 | (init_attr->create_flags & MLX4_IB_QP_CREATE_ROCE_V2_GSI && | |
1574 | init_attr->qp_type != IB_QPT_GSI)) | |
1575 | return ERR_PTR(-EINVAL); | |
1576 | } | |
b846f25a | 1577 | |
225c7b1f | 1578 | switch (init_attr->qp_type) { |
0a1405da SH |
1579 | case IB_QPT_XRC_TGT: |
1580 | pd = to_mxrcd(init_attr->xrcd)->pd; | |
1581 | xrcdn = to_mxrcd(init_attr->xrcd)->xrcdn; | |
1582 | init_attr->send_cq = to_mxrcd(init_attr->xrcd)->cq; | |
1583 | /* fall through */ | |
1584 | case IB_QPT_XRC_INI: | |
1585 | if (!(to_mdev(pd->device)->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC)) | |
1586 | return ERR_PTR(-ENOSYS); | |
1587 | init_attr->recv_cq = init_attr->send_cq; | |
1588 | /* fall through */ | |
225c7b1f RD |
1589 | case IB_QPT_RC: |
1590 | case IB_QPT_UC: | |
3987a2d3 | 1591 | case IB_QPT_RAW_PACKET: |
8900b894 | 1592 | qp = kzalloc(sizeof(*qp), GFP_KERNEL); |
225c7b1f RD |
1593 | if (!qp) |
1594 | return ERR_PTR(-ENOMEM); | |
2f5bb473 JM |
1595 | qp->pri.vid = 0xFFFF; |
1596 | qp->alt.vid = 0xFFFF; | |
1ffeb2eb JM |
1597 | /* fall through */ |
1598 | case IB_QPT_UD: | |
1599 | { | |
089b645d | 1600 | err = create_qp_common(pd, init_attr, udata, 0, &qp); |
5b420d9c DB |
1601 | if (err) { |
1602 | kfree(qp); | |
225c7b1f | 1603 | return ERR_PTR(err); |
5b420d9c | 1604 | } |
225c7b1f RD |
1605 | |
1606 | qp->ibqp.qp_num = qp->mqp.qpn; | |
0a1405da | 1607 | qp->xrcdn = xrcdn; |
225c7b1f RD |
1608 | |
1609 | break; | |
1610 | } | |
1611 | case IB_QPT_SMI: | |
1612 | case IB_QPT_GSI: | |
1613 | { | |
e1b866c6 MS |
1614 | int sqpn; |
1615 | ||
225c7b1f | 1616 | /* Userspace is not allowed to create special QPs: */ |
0a1405da | 1617 | if (udata) |
225c7b1f | 1618 | return ERR_PTR(-EINVAL); |
e1b866c6 | 1619 | if (init_attr->create_flags & MLX4_IB_QP_CREATE_ROCE_V2_GSI) { |
f3301870 MS |
1620 | int res = mlx4_qp_reserve_range(to_mdev(pd->device)->dev, |
1621 | 1, 1, &sqpn, 0, | |
1622 | MLX4_RES_USAGE_DRIVER); | |
e1b866c6 MS |
1623 | |
1624 | if (res) | |
1625 | return ERR_PTR(res); | |
1626 | } else { | |
1627 | sqpn = get_sqp_num(to_mdev(pd->device), init_attr); | |
1628 | } | |
225c7b1f | 1629 | |
089b645d | 1630 | err = create_qp_common(pd, init_attr, udata, sqpn, &qp); |
1ffeb2eb | 1631 | if (err) |
225c7b1f | 1632 | return ERR_PTR(err); |
225c7b1f RD |
1633 | |
1634 | qp->port = init_attr->port_num; | |
e1b866c6 MS |
1635 | qp->ibqp.qp_num = init_attr->qp_type == IB_QPT_SMI ? 0 : |
1636 | init_attr->create_flags & MLX4_IB_QP_CREATE_ROCE_V2_GSI ? sqpn : 1; | |
225c7b1f RD |
1637 | break; |
1638 | } | |
1639 | default: | |
1640 | /* Don't support raw QPs */ | |
1641 | return ERR_PTR(-EINVAL); | |
1642 | } | |
1643 | ||
1644 | return &qp->ibqp; | |
1645 | } | |
1646 | ||
e1b866c6 MS |
1647 | struct ib_qp *mlx4_ib_create_qp(struct ib_pd *pd, |
1648 | struct ib_qp_init_attr *init_attr, | |
1649 | struct ib_udata *udata) { | |
1650 | struct ib_device *device = pd ? pd->device : init_attr->xrcd->device; | |
1651 | struct ib_qp *ibqp; | |
1652 | struct mlx4_ib_dev *dev = to_mdev(device); | |
1653 | ||
1654 | ibqp = _mlx4_ib_create_qp(pd, init_attr, udata); | |
1655 | ||
1656 | if (!IS_ERR(ibqp) && | |
1657 | (init_attr->qp_type == IB_QPT_GSI) && | |
1658 | !(init_attr->create_flags & MLX4_IB_QP_CREATE_ROCE_V2_GSI)) { | |
1659 | struct mlx4_ib_sqp *sqp = to_msqp((to_mqp(ibqp))); | |
1660 | int is_eth = rdma_cap_eth_ah(&dev->ib_dev, init_attr->port_num); | |
1661 | ||
1662 | if (is_eth && | |
1663 | dev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2) { | |
1664 | init_attr->create_flags |= MLX4_IB_QP_CREATE_ROCE_V2_GSI; | |
1665 | sqp->roce_v2_gsi = ib_create_qp(pd, init_attr); | |
1666 | ||
1667 | if (IS_ERR(sqp->roce_v2_gsi)) { | |
1668 | pr_err("Failed to create GSI QP for RoCEv2 (%ld)\n", PTR_ERR(sqp->roce_v2_gsi)); | |
1669 | sqp->roce_v2_gsi = NULL; | |
1670 | } else { | |
1671 | sqp = to_msqp(to_mqp(sqp->roce_v2_gsi)); | |
1672 | sqp->qp.flags |= MLX4_IB_ROCE_V2_GSI_QP; | |
1673 | } | |
1674 | ||
1675 | init_attr->create_flags &= ~MLX4_IB_QP_CREATE_ROCE_V2_GSI; | |
1676 | } | |
1677 | } | |
1678 | return ibqp; | |
1679 | } | |
1680 | ||
bdeacabd | 1681 | static int _mlx4_ib_destroy_qp(struct ib_qp *qp, struct ib_udata *udata) |
225c7b1f RD |
1682 | { |
1683 | struct mlx4_ib_dev *dev = to_mdev(qp->device); | |
1684 | struct mlx4_ib_qp *mqp = to_mqp(qp); | |
1685 | ||
1686 | if (is_qp0(dev, mqp)) | |
1687 | mlx4_CLOSE_PORT(dev->dev, mqp->port); | |
1688 | ||
c482af64 JM |
1689 | if (mqp->mlx4_ib_qp_type == MLX4_IB_QPT_PROXY_GSI && |
1690 | dev->qp1_proxy[mqp->port - 1] == mqp) { | |
9433c188 MB |
1691 | mutex_lock(&dev->qp1_proxy_lock[mqp->port - 1]); |
1692 | dev->qp1_proxy[mqp->port - 1] = NULL; | |
1693 | mutex_unlock(&dev->qp1_proxy_lock[mqp->port - 1]); | |
1694 | } | |
1695 | ||
7b59f0f9 EBE |
1696 | if (mqp->counter_index) |
1697 | mlx4_ib_free_qp_counter(dev, mqp); | |
1698 | ||
3078f5f1 GL |
1699 | if (qp->rwq_ind_tbl) { |
1700 | destroy_qp_rss(dev, mqp); | |
1701 | } else { | |
bdeacabd | 1702 | destroy_qp_common(dev, mqp, MLX4_IB_QP_SRC, udata); |
3078f5f1 | 1703 | } |
225c7b1f RD |
1704 | |
1705 | if (is_sqp(dev, mqp)) | |
1706 | kfree(to_msqp(mqp)); | |
1707 | else | |
1708 | kfree(mqp); | |
1709 | ||
1710 | return 0; | |
1711 | } | |
1712 | ||
c4367a26 | 1713 | int mlx4_ib_destroy_qp(struct ib_qp *qp, struct ib_udata *udata) |
e1b866c6 MS |
1714 | { |
1715 | struct mlx4_ib_qp *mqp = to_mqp(qp); | |
1716 | ||
1717 | if (mqp->mlx4_ib_qp_type == MLX4_IB_QPT_GSI) { | |
1718 | struct mlx4_ib_sqp *sqp = to_msqp(mqp); | |
1719 | ||
1720 | if (sqp->roce_v2_gsi) | |
1721 | ib_destroy_qp(sqp->roce_v2_gsi); | |
1722 | } | |
1723 | ||
bdeacabd | 1724 | return _mlx4_ib_destroy_qp(qp, udata); |
e1b866c6 MS |
1725 | } |
1726 | ||
1ffeb2eb | 1727 | static int to_mlx4_st(struct mlx4_ib_dev *dev, enum mlx4_ib_qp_type type) |
225c7b1f RD |
1728 | { |
1729 | switch (type) { | |
1ffeb2eb JM |
1730 | case MLX4_IB_QPT_RC: return MLX4_QP_ST_RC; |
1731 | case MLX4_IB_QPT_UC: return MLX4_QP_ST_UC; | |
1732 | case MLX4_IB_QPT_UD: return MLX4_QP_ST_UD; | |
1733 | case MLX4_IB_QPT_XRC_INI: | |
1734 | case MLX4_IB_QPT_XRC_TGT: return MLX4_QP_ST_XRC; | |
1735 | case MLX4_IB_QPT_SMI: | |
1736 | case MLX4_IB_QPT_GSI: | |
1737 | case MLX4_IB_QPT_RAW_PACKET: return MLX4_QP_ST_MLX; | |
1738 | ||
1739 | case MLX4_IB_QPT_PROXY_SMI_OWNER: | |
1740 | case MLX4_IB_QPT_TUN_SMI_OWNER: return (mlx4_is_mfunc(dev->dev) ? | |
1741 | MLX4_QP_ST_MLX : -1); | |
1742 | case MLX4_IB_QPT_PROXY_SMI: | |
1743 | case MLX4_IB_QPT_TUN_SMI: | |
1744 | case MLX4_IB_QPT_PROXY_GSI: | |
1745 | case MLX4_IB_QPT_TUN_GSI: return (mlx4_is_mfunc(dev->dev) ? | |
1746 | MLX4_QP_ST_UD : -1); | |
1747 | default: return -1; | |
225c7b1f RD |
1748 | } |
1749 | } | |
1750 | ||
65adfa91 | 1751 | static __be32 to_mlx4_access_flags(struct mlx4_ib_qp *qp, const struct ib_qp_attr *attr, |
225c7b1f RD |
1752 | int attr_mask) |
1753 | { | |
1754 | u8 dest_rd_atomic; | |
1755 | u32 access_flags; | |
1756 | u32 hw_access_flags = 0; | |
1757 | ||
1758 | if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC) | |
1759 | dest_rd_atomic = attr->max_dest_rd_atomic; | |
1760 | else | |
1761 | dest_rd_atomic = qp->resp_depth; | |
1762 | ||
1763 | if (attr_mask & IB_QP_ACCESS_FLAGS) | |
1764 | access_flags = attr->qp_access_flags; | |
1765 | else | |
1766 | access_flags = qp->atomic_rd_en; | |
1767 | ||
1768 | if (!dest_rd_atomic) | |
1769 | access_flags &= IB_ACCESS_REMOTE_WRITE; | |
1770 | ||
1771 | if (access_flags & IB_ACCESS_REMOTE_READ) | |
1772 | hw_access_flags |= MLX4_QP_BIT_RRE; | |
1773 | if (access_flags & IB_ACCESS_REMOTE_ATOMIC) | |
1774 | hw_access_flags |= MLX4_QP_BIT_RAE; | |
1775 | if (access_flags & IB_ACCESS_REMOTE_WRITE) | |
1776 | hw_access_flags |= MLX4_QP_BIT_RWE; | |
1777 | ||
1778 | return cpu_to_be32(hw_access_flags); | |
1779 | } | |
1780 | ||
65adfa91 | 1781 | static void store_sqp_attrs(struct mlx4_ib_sqp *sqp, const struct ib_qp_attr *attr, |
225c7b1f RD |
1782 | int attr_mask) |
1783 | { | |
1784 | if (attr_mask & IB_QP_PKEY_INDEX) | |
1785 | sqp->pkey_index = attr->pkey_index; | |
1786 | if (attr_mask & IB_QP_QKEY) | |
1787 | sqp->qkey = attr->qkey; | |
1788 | if (attr_mask & IB_QP_SQ_PSN) | |
1789 | sqp->send_psn = attr->sq_psn; | |
1790 | } | |
1791 | ||
1792 | static void mlx4_set_sched(struct mlx4_qp_path *path, u8 port) | |
1793 | { | |
1794 | path->sched_queue = (path->sched_queue & 0xbf) | ((port - 1) << 6); | |
1795 | } | |
1796 | ||
90898850 DC |
1797 | static int _mlx4_set_path(struct mlx4_ib_dev *dev, |
1798 | const struct rdma_ah_attr *ah, | |
297e0dad | 1799 | u64 smac, u16 vlan_tag, struct mlx4_qp_path *path, |
2f5bb473 | 1800 | struct mlx4_roce_smac_vlan_info *smac_info, u8 port) |
225c7b1f | 1801 | { |
4c3eb3ca | 1802 | int vidx; |
297e0dad | 1803 | int smac_index; |
2f5bb473 | 1804 | int err; |
297e0dad | 1805 | |
d8966fcd DC |
1806 | path->grh_mylmc = rdma_ah_get_path_bits(ah) & 0x7f; |
1807 | path->rlid = cpu_to_be16(rdma_ah_get_dlid(ah)); | |
1808 | if (rdma_ah_get_static_rate(ah)) { | |
1809 | path->static_rate = rdma_ah_get_static_rate(ah) + | |
1810 | MLX4_STAT_RATE_OFFSET; | |
225c7b1f RD |
1811 | while (path->static_rate > IB_RATE_2_5_GBPS + MLX4_STAT_RATE_OFFSET && |
1812 | !(1 << path->static_rate & dev->dev->caps.stat_rate_support)) | |
1813 | --path->static_rate; | |
1814 | } else | |
1815 | path->static_rate = 0; | |
225c7b1f | 1816 | |
d8966fcd DC |
1817 | if (rdma_ah_get_ah_flags(ah) & IB_AH_GRH) { |
1818 | const struct ib_global_route *grh = rdma_ah_read_grh(ah); | |
1819 | int real_sgid_index = | |
7492052a | 1820 | mlx4_ib_gid_index_to_real_index(dev, grh->sgid_attr); |
5070cd22 | 1821 | |
54a6d63f DC |
1822 | if (real_sgid_index < 0) |
1823 | return real_sgid_index; | |
5070cd22 | 1824 | if (real_sgid_index >= dev->dev->caps.gid_table_len[port]) { |
987c8f8f | 1825 | pr_err("sgid_index (%u) too large. max is %d\n", |
5070cd22 | 1826 | real_sgid_index, dev->dev->caps.gid_table_len[port] - 1); |
225c7b1f RD |
1827 | return -1; |
1828 | } | |
1829 | ||
1830 | path->grh_mylmc |= 1 << 7; | |
5070cd22 | 1831 | path->mgid_index = real_sgid_index; |
d8966fcd | 1832 | path->hop_limit = grh->hop_limit; |
225c7b1f | 1833 | path->tclass_flowlabel = |
d8966fcd DC |
1834 | cpu_to_be32((grh->traffic_class << 20) | |
1835 | (grh->flow_label)); | |
1836 | memcpy(path->rgid, grh->dgid.raw, 16); | |
225c7b1f RD |
1837 | } |
1838 | ||
44c58487 | 1839 | if (ah->type == RDMA_AH_ATTR_TYPE_ROCE) { |
d8966fcd | 1840 | if (!(rdma_ah_get_ah_flags(ah) & IB_AH_GRH)) |
fa417f7b EC |
1841 | return -1; |
1842 | ||
2f5bb473 | 1843 | path->sched_queue = MLX4_IB_DEFAULT_SCHED_QUEUE | |
d8966fcd | 1844 | ((port - 1) << 6) | ((rdma_ah_get_sl(ah) & 7) << 3); |
4c3eb3ca | 1845 | |
297e0dad | 1846 | path->feup |= MLX4_FEUP_FORCE_ETH_UP; |
4c3eb3ca | 1847 | if (vlan_tag < 0x1000) { |
2f5bb473 JM |
1848 | if (smac_info->vid < 0x1000) { |
1849 | /* both valid vlan ids */ | |
1850 | if (smac_info->vid != vlan_tag) { | |
1851 | /* different VIDs. unreg old and reg new */ | |
1852 | err = mlx4_register_vlan(dev->dev, port, vlan_tag, &vidx); | |
1853 | if (err) | |
1854 | return err; | |
1855 | smac_info->candidate_vid = vlan_tag; | |
1856 | smac_info->candidate_vlan_index = vidx; | |
1857 | smac_info->candidate_vlan_port = port; | |
1858 | smac_info->update_vid = 1; | |
1859 | path->vlan_index = vidx; | |
1860 | } else { | |
1861 | path->vlan_index = smac_info->vlan_index; | |
1862 | } | |
1863 | } else { | |
1864 | /* no current vlan tag in qp */ | |
1865 | err = mlx4_register_vlan(dev->dev, port, vlan_tag, &vidx); | |
1866 | if (err) | |
1867 | return err; | |
1868 | smac_info->candidate_vid = vlan_tag; | |
1869 | smac_info->candidate_vlan_index = vidx; | |
1870 | smac_info->candidate_vlan_port = port; | |
1871 | smac_info->update_vid = 1; | |
1872 | path->vlan_index = vidx; | |
1873 | } | |
297e0dad | 1874 | path->feup |= MLX4_FVL_FORCE_ETH_VLAN; |
2f5bb473 JM |
1875 | path->fl = 1 << 6; |
1876 | } else { | |
1877 | /* have current vlan tag. unregister it at modify-qp success */ | |
1878 | if (smac_info->vid < 0x1000) { | |
1879 | smac_info->candidate_vid = 0xFFFF; | |
1880 | smac_info->update_vid = 1; | |
1881 | } | |
4c3eb3ca | 1882 | } |
2f5bb473 JM |
1883 | |
1884 | /* get smac_index for RoCE use. | |
1885 | * If no smac was yet assigned, register one. | |
1886 | * If one was already assigned, but the new mac differs, | |
1887 | * unregister the old one and register the new one. | |
1888 | */ | |
25476b02 JM |
1889 | if ((!smac_info->smac && !smac_info->smac_port) || |
1890 | smac_info->smac != smac) { | |
2f5bb473 JM |
1891 | /* register candidate now, unreg if needed, after success */ |
1892 | smac_index = mlx4_register_mac(dev->dev, port, smac); | |
1893 | if (smac_index >= 0) { | |
1894 | smac_info->candidate_smac_index = smac_index; | |
1895 | smac_info->candidate_smac = smac; | |
1896 | smac_info->candidate_smac_port = port; | |
1897 | } else { | |
1898 | return -EINVAL; | |
1899 | } | |
1900 | } else { | |
1901 | smac_index = smac_info->smac_index; | |
1902 | } | |
44c58487 | 1903 | memcpy(path->dmac, ah->roce.dmac, 6); |
2f5bb473 JM |
1904 | path->ackto = MLX4_IB_LINK_TYPE_ETH; |
1905 | /* put MAC table smac index for IBoE */ | |
1906 | path->grh_mylmc = (u8) (smac_index) | 0x80; | |
1907 | } else { | |
4c3eb3ca | 1908 | path->sched_queue = MLX4_IB_DEFAULT_SCHED_QUEUE | |
d8966fcd | 1909 | ((port - 1) << 6) | ((rdma_ah_get_sl(ah) & 0xf) << 2); |
2f5bb473 | 1910 | } |
fa417f7b | 1911 | |
225c7b1f RD |
1912 | return 0; |
1913 | } | |
1914 | ||
297e0dad MS |
1915 | static int mlx4_set_path(struct mlx4_ib_dev *dev, const struct ib_qp_attr *qp, |
1916 | enum ib_qp_attr_mask qp_attr_mask, | |
2f5bb473 | 1917 | struct mlx4_ib_qp *mqp, |
dbf727de MB |
1918 | struct mlx4_qp_path *path, u8 port, |
1919 | u16 vlan_id, u8 *smac) | |
297e0dad MS |
1920 | { |
1921 | return _mlx4_set_path(dev, &qp->ah_attr, | |
dbf727de MB |
1922 | mlx4_mac_to_u64(smac), |
1923 | vlan_id, | |
2f5bb473 | 1924 | path, &mqp->pri, port); |
297e0dad MS |
1925 | } |
1926 | ||
1927 | static int mlx4_set_alt_path(struct mlx4_ib_dev *dev, | |
1928 | const struct ib_qp_attr *qp, | |
1929 | enum ib_qp_attr_mask qp_attr_mask, | |
2f5bb473 | 1930 | struct mlx4_ib_qp *mqp, |
297e0dad MS |
1931 | struct mlx4_qp_path *path, u8 port) |
1932 | { | |
1933 | return _mlx4_set_path(dev, &qp->alt_ah_attr, | |
dbf727de MB |
1934 | 0, |
1935 | 0xffff, | |
2f5bb473 | 1936 | path, &mqp->alt, port); |
297e0dad MS |
1937 | } |
1938 | ||
fa417f7b EC |
1939 | static void update_mcg_macs(struct mlx4_ib_dev *dev, struct mlx4_ib_qp *qp) |
1940 | { | |
1941 | struct mlx4_ib_gid_entry *ge, *tmp; | |
1942 | ||
1943 | list_for_each_entry_safe(ge, tmp, &qp->gid_list, list) { | |
1944 | if (!ge->added && mlx4_ib_add_mc(dev, qp, &ge->gid)) { | |
1945 | ge->added = 1; | |
1946 | ge->port = qp->port; | |
1947 | } | |
1948 | } | |
1949 | } | |
1950 | ||
dbf727de MB |
1951 | static int handle_eth_ud_smac_index(struct mlx4_ib_dev *dev, |
1952 | struct mlx4_ib_qp *qp, | |
2f5bb473 JM |
1953 | struct mlx4_qp_context *context) |
1954 | { | |
2f5bb473 JM |
1955 | u64 u64_mac; |
1956 | int smac_index; | |
1957 | ||
3e0629cb | 1958 | u64_mac = atomic64_read(&dev->iboe.mac[qp->port - 1]); |
2f5bb473 JM |
1959 | |
1960 | context->pri_path.sched_queue = MLX4_IB_DEFAULT_SCHED_QUEUE | ((qp->port - 1) << 6); | |
25476b02 | 1961 | if (!qp->pri.smac && !qp->pri.smac_port) { |
2f5bb473 JM |
1962 | smac_index = mlx4_register_mac(dev->dev, qp->port, u64_mac); |
1963 | if (smac_index >= 0) { | |
1964 | qp->pri.candidate_smac_index = smac_index; | |
1965 | qp->pri.candidate_smac = u64_mac; | |
1966 | qp->pri.candidate_smac_port = qp->port; | |
1967 | context->pri_path.grh_mylmc = 0x80 | (u8) smac_index; | |
1968 | } else { | |
1969 | return -ENOENT; | |
1970 | } | |
1971 | } | |
1972 | return 0; | |
1973 | } | |
1974 | ||
7b59f0f9 EBE |
1975 | static int create_qp_lb_counter(struct mlx4_ib_dev *dev, struct mlx4_ib_qp *qp) |
1976 | { | |
1977 | struct counter_index *new_counter_index; | |
1978 | int err; | |
1979 | u32 tmp_idx; | |
1980 | ||
1981 | if (rdma_port_get_link_layer(&dev->ib_dev, qp->port) != | |
1982 | IB_LINK_LAYER_ETHERNET || | |
1983 | !(qp->flags & MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK) || | |
1984 | !(dev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_LB_SRC_CHK)) | |
1985 | return 0; | |
1986 | ||
f3301870 | 1987 | err = mlx4_counter_alloc(dev->dev, &tmp_idx, MLX4_RES_USAGE_DRIVER); |
7b59f0f9 EBE |
1988 | if (err) |
1989 | return err; | |
1990 | ||
1991 | new_counter_index = kmalloc(sizeof(*new_counter_index), GFP_KERNEL); | |
1992 | if (!new_counter_index) { | |
1993 | mlx4_counter_free(dev->dev, tmp_idx); | |
1994 | return -ENOMEM; | |
1995 | } | |
1996 | ||
1997 | new_counter_index->index = tmp_idx; | |
1998 | new_counter_index->allocated = 1; | |
1999 | qp->counter_index = new_counter_index; | |
2000 | ||
2001 | mutex_lock(&dev->counters_table[qp->port - 1].mutex); | |
2002 | list_add_tail(&new_counter_index->list, | |
2003 | &dev->counters_table[qp->port - 1].counters_list); | |
2004 | mutex_unlock(&dev->counters_table[qp->port - 1].mutex); | |
2005 | ||
2006 | return 0; | |
2007 | } | |
2008 | ||
3b5daf28 MS |
2009 | enum { |
2010 | MLX4_QPC_ROCE_MODE_1 = 0, | |
2011 | MLX4_QPC_ROCE_MODE_2 = 2, | |
2012 | MLX4_QPC_ROCE_MODE_UNDEFINED = 0xff | |
2013 | }; | |
2014 | ||
2015 | static u8 gid_type_to_qpc(enum ib_gid_type gid_type) | |
2016 | { | |
2017 | switch (gid_type) { | |
2018 | case IB_GID_TYPE_ROCE: | |
2019 | return MLX4_QPC_ROCE_MODE_1; | |
2020 | case IB_GID_TYPE_ROCE_UDP_ENCAP: | |
2021 | return MLX4_QPC_ROCE_MODE_2; | |
2022 | default: | |
2023 | return MLX4_QPC_ROCE_MODE_UNDEFINED; | |
2024 | } | |
2025 | } | |
2026 | ||
3078f5f1 GL |
2027 | /* |
2028 | * Go over all RSS QP's childes (WQs) and apply their HW state according to | |
2029 | * their logic state if the RSS QP is the first RSS QP associated for the WQ. | |
2030 | */ | |
89944450 SR |
2031 | static int bringup_rss_rwqs(struct ib_rwq_ind_table *ind_tbl, u8 port_num, |
2032 | struct ib_udata *udata) | |
3078f5f1 | 2033 | { |
fba02e6c | 2034 | int err = 0; |
3078f5f1 | 2035 | int i; |
3078f5f1 GL |
2036 | |
2037 | for (i = 0; i < (1 << ind_tbl->log_ind_tbl_size); i++) { | |
2038 | struct ib_wq *ibwq = ind_tbl->ind_tbl[i]; | |
2039 | struct mlx4_ib_qp *wq = to_mqp((struct ib_qp *)ibwq); | |
2040 | ||
2041 | mutex_lock(&wq->mutex); | |
2042 | ||
2043 | /* Mlx4_ib restrictions: | |
2044 | * WQ's is associated to a port according to the RSS QP it is | |
2045 | * associates to. | |
2046 | * In case the WQ is associated to a different port by another | |
2047 | * RSS QP, return a failure. | |
2048 | */ | |
2049 | if ((wq->rss_usecnt > 0) && (wq->port != port_num)) { | |
2050 | err = -EINVAL; | |
2051 | mutex_unlock(&wq->mutex); | |
2052 | break; | |
2053 | } | |
2054 | wq->port = port_num; | |
2055 | if ((wq->rss_usecnt == 0) && (ibwq->state == IB_WQS_RDY)) { | |
89944450 | 2056 | err = _mlx4_ib_modify_wq(ibwq, IB_WQS_RDY, udata); |
3078f5f1 GL |
2057 | if (err) { |
2058 | mutex_unlock(&wq->mutex); | |
2059 | break; | |
2060 | } | |
2061 | } | |
2062 | wq->rss_usecnt++; | |
2063 | ||
2064 | mutex_unlock(&wq->mutex); | |
2065 | } | |
2066 | ||
2067 | if (i && err) { | |
2068 | int j; | |
2069 | ||
2070 | for (j = (i - 1); j >= 0; j--) { | |
2071 | struct ib_wq *ibwq = ind_tbl->ind_tbl[j]; | |
2072 | struct mlx4_ib_qp *wq = to_mqp((struct ib_qp *)ibwq); | |
2073 | ||
2074 | mutex_lock(&wq->mutex); | |
2075 | ||
2076 | if ((wq->rss_usecnt == 1) && | |
2077 | (ibwq->state == IB_WQS_RDY)) | |
89944450 SR |
2078 | if (_mlx4_ib_modify_wq(ibwq, IB_WQS_RESET, |
2079 | udata)) | |
3078f5f1 GL |
2080 | pr_warn("failed to reverse WQN=0x%06x\n", |
2081 | ibwq->wq_num); | |
2082 | wq->rss_usecnt--; | |
2083 | ||
2084 | mutex_unlock(&wq->mutex); | |
2085 | } | |
2086 | } | |
2087 | ||
2088 | return err; | |
2089 | } | |
2090 | ||
89944450 SR |
2091 | static void bring_down_rss_rwqs(struct ib_rwq_ind_table *ind_tbl, |
2092 | struct ib_udata *udata) | |
3078f5f1 GL |
2093 | { |
2094 | int i; | |
2095 | ||
2096 | for (i = 0; i < (1 << ind_tbl->log_ind_tbl_size); i++) { | |
2097 | struct ib_wq *ibwq = ind_tbl->ind_tbl[i]; | |
2098 | struct mlx4_ib_qp *wq = to_mqp((struct ib_qp *)ibwq); | |
2099 | ||
2100 | mutex_lock(&wq->mutex); | |
2101 | ||
2102 | if ((wq->rss_usecnt == 1) && (ibwq->state == IB_WQS_RDY)) | |
89944450 | 2103 | if (_mlx4_ib_modify_wq(ibwq, IB_WQS_RESET, udata)) |
3078f5f1 GL |
2104 | pr_warn("failed to reverse WQN=%x\n", |
2105 | ibwq->wq_num); | |
2106 | wq->rss_usecnt--; | |
2107 | ||
2108 | mutex_unlock(&wq->mutex); | |
2109 | } | |
2110 | } | |
2111 | ||
2112 | static void fill_qp_rss_context(struct mlx4_qp_context *context, | |
2113 | struct mlx4_ib_qp *qp) | |
2114 | { | |
2115 | struct mlx4_rss_context *rss_context; | |
2116 | ||
2117 | rss_context = (void *)context + offsetof(struct mlx4_qp_context, | |
2118 | pri_path) + MLX4_RSS_OFFSET_IN_QPC_PRI_PATH; | |
2119 | ||
2120 | rss_context->base_qpn = cpu_to_be32(qp->rss_ctx->base_qpn_tbl_sz); | |
2121 | rss_context->default_qpn = | |
2122 | cpu_to_be32(qp->rss_ctx->base_qpn_tbl_sz & 0xffffff); | |
2123 | if (qp->rss_ctx->flags & (MLX4_RSS_UDP_IPV4 | MLX4_RSS_UDP_IPV6)) | |
2124 | rss_context->base_qpn_udp = rss_context->default_qpn; | |
2125 | rss_context->flags = qp->rss_ctx->flags; | |
2126 | /* Currently support just toeplitz */ | |
2127 | rss_context->hash_fn = MLX4_RSS_HASH_TOP; | |
2128 | ||
2129 | memcpy(rss_context->rss_key, qp->rss_ctx->rss_key, | |
2130 | MLX4_EN_RSS_KEY_SIZE); | |
2131 | } | |
2132 | ||
400b1ebc | 2133 | static int __mlx4_ib_modify_qp(void *src, enum mlx4_ib_source_type src_type, |
65adfa91 | 2134 | const struct ib_qp_attr *attr, int attr_mask, |
89944450 SR |
2135 | enum ib_qp_state cur_state, |
2136 | enum ib_qp_state new_state, | |
2137 | struct ib_udata *udata) | |
225c7b1f | 2138 | { |
400b1ebc | 2139 | struct ib_srq *ibsrq; |
47ec3866 | 2140 | const struct ib_gid_attr *gid_attr = NULL; |
3078f5f1 | 2141 | struct ib_rwq_ind_table *rwq_ind_tbl; |
400b1ebc GL |
2142 | enum ib_qp_type qp_type; |
2143 | struct mlx4_ib_dev *dev; | |
2144 | struct mlx4_ib_qp *qp; | |
0a1405da SH |
2145 | struct mlx4_ib_pd *pd; |
2146 | struct mlx4_ib_cq *send_cq, *recv_cq; | |
89944450 SR |
2147 | struct mlx4_ib_ucontext *ucontext = rdma_udata_to_drv_context( |
2148 | udata, struct mlx4_ib_ucontext, ibucontext); | |
225c7b1f RD |
2149 | struct mlx4_qp_context *context; |
2150 | enum mlx4_qp_optpar optpar = 0; | |
225c7b1f | 2151 | int sqd_event; |
c1c98501 | 2152 | int steer_qp = 0; |
225c7b1f | 2153 | int err = -EINVAL; |
3ba8e31d | 2154 | int counter_index; |
225c7b1f | 2155 | |
400b1ebc GL |
2156 | if (src_type == MLX4_IB_RWQ_SRC) { |
2157 | struct ib_wq *ibwq; | |
2158 | ||
3078f5f1 | 2159 | ibwq = (struct ib_wq *)src; |
3078f5f1 GL |
2160 | ibsrq = NULL; |
2161 | rwq_ind_tbl = NULL; | |
2162 | qp_type = IB_QPT_RAW_PACKET; | |
2163 | qp = to_mqp((struct ib_qp *)ibwq); | |
2164 | dev = to_mdev(ibwq->device); | |
2165 | pd = to_mpd(ibwq->pd); | |
400b1ebc GL |
2166 | } else { |
2167 | struct ib_qp *ibqp; | |
2168 | ||
3078f5f1 | 2169 | ibqp = (struct ib_qp *)src; |
3078f5f1 GL |
2170 | ibsrq = ibqp->srq; |
2171 | rwq_ind_tbl = ibqp->rwq_ind_tbl; | |
2172 | qp_type = ibqp->qp_type; | |
2173 | qp = to_mqp(ibqp); | |
2174 | dev = to_mdev(ibqp->device); | |
2175 | pd = get_pd(qp); | |
400b1ebc GL |
2176 | } |
2177 | ||
3dec4878 JM |
2178 | /* APM is not supported under RoCE */ |
2179 | if (attr_mask & IB_QP_ALT_PATH && | |
2180 | rdma_port_get_link_layer(&dev->ib_dev, qp->port) == | |
2181 | IB_LINK_LAYER_ETHERNET) | |
2182 | return -ENOTSUPP; | |
2183 | ||
225c7b1f RD |
2184 | context = kzalloc(sizeof *context, GFP_KERNEL); |
2185 | if (!context) | |
2186 | return -ENOMEM; | |
2187 | ||
225c7b1f | 2188 | context->flags = cpu_to_be32((to_mlx4_state(new_state) << 28) | |
1ffeb2eb | 2189 | (to_mlx4_st(dev, qp->mlx4_ib_qp_type) << 16)); |
225c7b1f RD |
2190 | |
2191 | if (!(attr_mask & IB_QP_PATH_MIG_STATE)) | |
2192 | context->flags |= cpu_to_be32(MLX4_QP_PM_MIGRATED << 11); | |
2193 | else { | |
2194 | optpar |= MLX4_QP_OPTPAR_PM_STATE; | |
2195 | switch (attr->path_mig_state) { | |
2196 | case IB_MIG_MIGRATED: | |
2197 | context->flags |= cpu_to_be32(MLX4_QP_PM_MIGRATED << 11); | |
2198 | break; | |
2199 | case IB_MIG_REARM: | |
2200 | context->flags |= cpu_to_be32(MLX4_QP_PM_REARM << 11); | |
2201 | break; | |
2202 | case IB_MIG_ARMED: | |
2203 | context->flags |= cpu_to_be32(MLX4_QP_PM_ARMED << 11); | |
2204 | break; | |
2205 | } | |
2206 | } | |
2207 | ||
ea30b966 MG |
2208 | if (qp->inl_recv_sz) |
2209 | context->param3 |= cpu_to_be32(1 << 25); | |
2210 | ||
6d06c9aa GL |
2211 | if (qp->flags & MLX4_IB_QP_SCATTER_FCS) |
2212 | context->param3 |= cpu_to_be32(1 << 29); | |
2213 | ||
400b1ebc | 2214 | if (qp_type == IB_QPT_GSI || qp_type == IB_QPT_SMI) |
225c7b1f | 2215 | context->mtu_msgmax = (IB_MTU_4096 << 5) | 11; |
400b1ebc | 2216 | else if (qp_type == IB_QPT_RAW_PACKET) |
3987a2d3 | 2217 | context->mtu_msgmax = (MLX4_RAW_QP_MTU << 5) | MLX4_RAW_QP_MSGMAX; |
400b1ebc | 2218 | else if (qp_type == IB_QPT_UD) { |
b832be1e EC |
2219 | if (qp->flags & MLX4_IB_QP_LSO) |
2220 | context->mtu_msgmax = (IB_MTU_4096 << 5) | | |
2221 | ilog2(dev->dev->caps.max_gso_sz); | |
2222 | else | |
5f22a1d8 | 2223 | context->mtu_msgmax = (IB_MTU_4096 << 5) | 13; |
b832be1e | 2224 | } else if (attr_mask & IB_QP_PATH_MTU) { |
225c7b1f | 2225 | if (attr->path_mtu < IB_MTU_256 || attr->path_mtu > IB_MTU_4096) { |
987c8f8f | 2226 | pr_err("path MTU (%u) is invalid\n", |
225c7b1f | 2227 | attr->path_mtu); |
f5b40431 | 2228 | goto out; |
225c7b1f | 2229 | } |
d1f2cd89 EC |
2230 | context->mtu_msgmax = (attr->path_mtu << 5) | |
2231 | ilog2(dev->dev->caps.max_msg_sz); | |
225c7b1f RD |
2232 | } |
2233 | ||
3078f5f1 GL |
2234 | if (!rwq_ind_tbl) { /* PRM RSS receive side should be left zeros */ |
2235 | if (qp->rq.wqe_cnt) | |
2236 | context->rq_size_stride = ilog2(qp->rq.wqe_cnt) << 3; | |
2237 | context->rq_size_stride |= qp->rq.wqe_shift - 4; | |
2238 | } | |
225c7b1f | 2239 | |
0e6e7416 RD |
2240 | if (qp->sq.wqe_cnt) |
2241 | context->sq_size_stride = ilog2(qp->sq.wqe_cnt) << 3; | |
225c7b1f RD |
2242 | context->sq_size_stride |= qp->sq.wqe_shift - 4; |
2243 | ||
7b59f0f9 EBE |
2244 | if (new_state == IB_QPS_RESET && qp->counter_index) |
2245 | mlx4_ib_free_qp_counter(dev, qp); | |
2246 | ||
0a1405da | 2247 | if (cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT) { |
0e6e7416 | 2248 | context->sq_size_stride |= !!qp->sq_no_prefetch << 7; |
0a1405da | 2249 | context->xrcd = cpu_to_be32((u32) qp->xrcdn); |
400b1ebc | 2250 | if (qp_type == IB_QPT_RAW_PACKET) |
02d7ef6f | 2251 | context->param3 |= cpu_to_be32(1 << 30); |
0a1405da | 2252 | } |
0e6e7416 | 2253 | |
89944450 | 2254 | if (ucontext) |
85743f1e | 2255 | context->usr_page = cpu_to_be32( |
89944450 | 2256 | mlx4_to_hw_uar_index(dev->dev, ucontext->uar.index)); |
225c7b1f | 2257 | else |
85743f1e HN |
2258 | context->usr_page = cpu_to_be32( |
2259 | mlx4_to_hw_uar_index(dev->dev, dev->priv_uar.index)); | |
225c7b1f RD |
2260 | |
2261 | if (attr_mask & IB_QP_DEST_QPN) | |
2262 | context->remote_qpn = cpu_to_be32(attr->dest_qp_num); | |
2263 | ||
2264 | if (attr_mask & IB_QP_PORT) { | |
2265 | if (cur_state == IB_QPS_SQD && new_state == IB_QPS_SQD && | |
2266 | !(attr_mask & IB_QP_AV)) { | |
2267 | mlx4_set_sched(&context->pri_path, attr->port_num); | |
2268 | optpar |= MLX4_QP_OPTPAR_SCHED_QUEUE; | |
2269 | } | |
2270 | } | |
2271 | ||
cfcde11c | 2272 | if (cur_state == IB_QPS_INIT && new_state == IB_QPS_RTR) { |
7b59f0f9 EBE |
2273 | err = create_qp_lb_counter(dev, qp); |
2274 | if (err) | |
2275 | goto out; | |
2276 | ||
3ba8e31d EBE |
2277 | counter_index = |
2278 | dev->counters_table[qp->port - 1].default_counter; | |
7b59f0f9 EBE |
2279 | if (qp->counter_index) |
2280 | counter_index = qp->counter_index->index; | |
2281 | ||
3ba8e31d EBE |
2282 | if (counter_index != -1) { |
2283 | context->pri_path.counter_index = counter_index; | |
cfcde11c | 2284 | optpar |= MLX4_QP_OPTPAR_COUNTER_INDEX; |
7b59f0f9 EBE |
2285 | if (qp->counter_index) { |
2286 | context->pri_path.fl |= | |
2287 | MLX4_FL_ETH_SRC_CHECK_MC_LB; | |
2288 | context->pri_path.vlan_control |= | |
2289 | MLX4_CTRL_ETH_SRC_CHECK_IF_COUNTER; | |
2290 | } | |
cfcde11c | 2291 | } else |
47d8417f EBE |
2292 | context->pri_path.counter_index = |
2293 | MLX4_SINK_COUNTER_INDEX(dev->dev); | |
c1c98501 MB |
2294 | |
2295 | if (qp->flags & MLX4_IB_QP_NETIF) { | |
2296 | mlx4_ib_steer_qp_reg(dev, qp, 1); | |
2297 | steer_qp = 1; | |
2298 | } | |
e1b866c6 | 2299 | |
400b1ebc | 2300 | if (qp_type == IB_QPT_GSI) { |
e1b866c6 MS |
2301 | enum ib_gid_type gid_type = qp->flags & MLX4_IB_ROCE_V2_GSI_QP ? |
2302 | IB_GID_TYPE_ROCE_UDP_ENCAP : IB_GID_TYPE_ROCE; | |
2303 | u8 qpc_roce_mode = gid_type_to_qpc(gid_type); | |
2304 | ||
2305 | context->rlkey_roce_mode |= (qpc_roce_mode << 6); | |
2306 | } | |
cfcde11c OG |
2307 | } |
2308 | ||
225c7b1f | 2309 | if (attr_mask & IB_QP_PKEY_INDEX) { |
1ffeb2eb JM |
2310 | if (qp->mlx4_ib_qp_type & MLX4_IB_QPT_ANY_SRIOV) |
2311 | context->pri_path.disable_pkey_check = 0x40; | |
225c7b1f RD |
2312 | context->pri_path.pkey_index = attr->pkey_index; |
2313 | optpar |= MLX4_QP_OPTPAR_PKEY_INDEX; | |
2314 | } | |
2315 | ||
225c7b1f | 2316 | if (attr_mask & IB_QP_AV) { |
400b1ebc | 2317 | u8 port_num = mlx4_is_bonded(dev->dev) ? 1 : |
dbf727de | 2318 | attr_mask & IB_QP_PORT ? attr->port_num : qp->port; |
dbf727de MB |
2319 | u16 vlan = 0xffff; |
2320 | u8 smac[ETH_ALEN]; | |
d8966fcd DC |
2321 | int is_eth = |
2322 | rdma_cap_eth_ah(&dev->ib_dev, port_num) && | |
2323 | rdma_ah_get_ah_flags(&attr->ah_attr) & IB_AH_GRH; | |
dbf727de | 2324 | |
d8966fcd | 2325 | if (is_eth) { |
47ec3866 | 2326 | gid_attr = attr->ah_attr.grh.sgid_attr; |
a70c0739 PP |
2327 | err = rdma_read_gid_l2_fields(gid_attr, &vlan, |
2328 | &smac[0]); | |
2329 | if (err) | |
2330 | goto out; | |
dbf727de | 2331 | } |
dbf727de | 2332 | |
2f5bb473 | 2333 | if (mlx4_set_path(dev, attr, attr_mask, qp, &context->pri_path, |
dbf727de | 2334 | port_num, vlan, smac)) |
225c7b1f | 2335 | goto out; |
225c7b1f RD |
2336 | |
2337 | optpar |= (MLX4_QP_OPTPAR_PRIMARY_ADDR_PATH | | |
2338 | MLX4_QP_OPTPAR_SCHED_QUEUE); | |
3b5daf28 MS |
2339 | |
2340 | if (is_eth && | |
2341 | (cur_state == IB_QPS_INIT && new_state == IB_QPS_RTR)) { | |
47ec3866 | 2342 | u8 qpc_roce_mode = gid_type_to_qpc(gid_attr->gid_type); |
3b5daf28 MS |
2343 | |
2344 | if (qpc_roce_mode == MLX4_QPC_ROCE_MODE_UNDEFINED) { | |
2345 | err = -EINVAL; | |
2346 | goto out; | |
2347 | } | |
2348 | context->rlkey_roce_mode |= (qpc_roce_mode << 6); | |
2349 | } | |
2350 | ||
225c7b1f RD |
2351 | } |
2352 | ||
2353 | if (attr_mask & IB_QP_TIMEOUT) { | |
fa417f7b | 2354 | context->pri_path.ackto |= attr->timeout << 3; |
225c7b1f RD |
2355 | optpar |= MLX4_QP_OPTPAR_ACK_TIMEOUT; |
2356 | } | |
2357 | ||
2358 | if (attr_mask & IB_QP_ALT_PATH) { | |
225c7b1f RD |
2359 | if (attr->alt_port_num == 0 || |
2360 | attr->alt_port_num > dev->dev->caps.num_ports) | |
f5b40431 | 2361 | goto out; |
225c7b1f | 2362 | |
5ae2a7a8 RD |
2363 | if (attr->alt_pkey_index >= |
2364 | dev->dev->caps.pkey_table_len[attr->alt_port_num]) | |
f5b40431 | 2365 | goto out; |
5ae2a7a8 | 2366 | |
2f5bb473 JM |
2367 | if (mlx4_set_alt_path(dev, attr, attr_mask, qp, |
2368 | &context->alt_path, | |
297e0dad | 2369 | attr->alt_port_num)) |
f5b40431 | 2370 | goto out; |
225c7b1f RD |
2371 | |
2372 | context->alt_path.pkey_index = attr->alt_pkey_index; | |
2373 | context->alt_path.ackto = attr->alt_timeout << 3; | |
2374 | optpar |= MLX4_QP_OPTPAR_ALT_ADDR_PATH; | |
2375 | } | |
2376 | ||
3078f5f1 GL |
2377 | context->pd = cpu_to_be32(pd->pdn); |
2378 | ||
2379 | if (!rwq_ind_tbl) { | |
108809a0 | 2380 | context->params1 = cpu_to_be32(MLX4_IB_ACK_REQ_FREQ << 28); |
3078f5f1 GL |
2381 | get_cqs(qp, src_type, &send_cq, &recv_cq); |
2382 | } else { /* Set dummy CQs to be compatible with HV and PRM */ | |
2383 | send_cq = to_mcq(rwq_ind_tbl->ind_tbl[0]->cq); | |
2384 | recv_cq = send_cq; | |
2385 | } | |
0a1405da SH |
2386 | context->cqn_send = cpu_to_be32(send_cq->mcq.cqn); |
2387 | context->cqn_recv = cpu_to_be32(recv_cq->mcq.cqn); | |
57f01b53 | 2388 | |
95d04f07 | 2389 | /* Set "fast registration enabled" for all kernel QPs */ |
89944450 | 2390 | if (!ucontext) |
95d04f07 RD |
2391 | context->params1 |= cpu_to_be32(1 << 11); |
2392 | ||
57f01b53 JM |
2393 | if (attr_mask & IB_QP_RNR_RETRY) { |
2394 | context->params1 |= cpu_to_be32(attr->rnr_retry << 13); | |
2395 | optpar |= MLX4_QP_OPTPAR_RNR_RETRY; | |
2396 | } | |
2397 | ||
225c7b1f RD |
2398 | if (attr_mask & IB_QP_RETRY_CNT) { |
2399 | context->params1 |= cpu_to_be32(attr->retry_cnt << 16); | |
2400 | optpar |= MLX4_QP_OPTPAR_RETRY_COUNT; | |
2401 | } | |
2402 | ||
2403 | if (attr_mask & IB_QP_MAX_QP_RD_ATOMIC) { | |
2404 | if (attr->max_rd_atomic) | |
2405 | context->params1 |= | |
2406 | cpu_to_be32(fls(attr->max_rd_atomic - 1) << 21); | |
2407 | optpar |= MLX4_QP_OPTPAR_SRA_MAX; | |
2408 | } | |
2409 | ||
2410 | if (attr_mask & IB_QP_SQ_PSN) | |
2411 | context->next_send_psn = cpu_to_be32(attr->sq_psn); | |
2412 | ||
225c7b1f RD |
2413 | if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC) { |
2414 | if (attr->max_dest_rd_atomic) | |
2415 | context->params2 |= | |
2416 | cpu_to_be32(fls(attr->max_dest_rd_atomic - 1) << 21); | |
2417 | optpar |= MLX4_QP_OPTPAR_RRA_MAX; | |
2418 | } | |
2419 | ||
2420 | if (attr_mask & (IB_QP_ACCESS_FLAGS | IB_QP_MAX_DEST_RD_ATOMIC)) { | |
2421 | context->params2 |= to_mlx4_access_flags(qp, attr, attr_mask); | |
2422 | optpar |= MLX4_QP_OPTPAR_RWE | MLX4_QP_OPTPAR_RRE | MLX4_QP_OPTPAR_RAE; | |
2423 | } | |
2424 | ||
400b1ebc | 2425 | if (ibsrq) |
225c7b1f RD |
2426 | context->params2 |= cpu_to_be32(MLX4_QP_BIT_RIC); |
2427 | ||
2428 | if (attr_mask & IB_QP_MIN_RNR_TIMER) { | |
2429 | context->rnr_nextrecvpsn |= cpu_to_be32(attr->min_rnr_timer << 24); | |
2430 | optpar |= MLX4_QP_OPTPAR_RNR_TIMEOUT; | |
2431 | } | |
2432 | if (attr_mask & IB_QP_RQ_PSN) | |
2433 | context->rnr_nextrecvpsn |= cpu_to_be32(attr->rq_psn); | |
2434 | ||
1ffeb2eb | 2435 | /* proxy and tunnel qp qkeys will be changed in modify-qp wrappers */ |
225c7b1f | 2436 | if (attr_mask & IB_QP_QKEY) { |
1ffeb2eb JM |
2437 | if (qp->mlx4_ib_qp_type & |
2438 | (MLX4_IB_QPT_PROXY_SMI_OWNER | MLX4_IB_QPT_TUN_SMI_OWNER)) | |
2439 | context->qkey = cpu_to_be32(IB_QP_SET_QKEY); | |
2440 | else { | |
2441 | if (mlx4_is_mfunc(dev->dev) && | |
2442 | !(qp->mlx4_ib_qp_type & MLX4_IB_QPT_ANY_SRIOV) && | |
2443 | (attr->qkey & MLX4_RESERVED_QKEY_MASK) == | |
2444 | MLX4_RESERVED_QKEY_BASE) { | |
2445 | pr_err("Cannot use reserved QKEY" | |
2446 | " 0x%x (range 0xffff0000..0xffffffff" | |
2447 | " is reserved)\n", attr->qkey); | |
2448 | err = -EINVAL; | |
2449 | goto out; | |
2450 | } | |
2451 | context->qkey = cpu_to_be32(attr->qkey); | |
2452 | } | |
225c7b1f RD |
2453 | optpar |= MLX4_QP_OPTPAR_Q_KEY; |
2454 | } | |
2455 | ||
400b1ebc GL |
2456 | if (ibsrq) |
2457 | context->srqn = cpu_to_be32(1 << 24 | | |
2458 | to_msrq(ibsrq)->msrq.srqn); | |
225c7b1f | 2459 | |
400b1ebc GL |
2460 | if (qp->rq.wqe_cnt && |
2461 | cur_state == IB_QPS_RESET && | |
2462 | new_state == IB_QPS_INIT) | |
225c7b1f RD |
2463 | context->db_rec_addr = cpu_to_be64(qp->db.dma); |
2464 | ||
2465 | if (cur_state == IB_QPS_INIT && | |
2466 | new_state == IB_QPS_RTR && | |
400b1ebc GL |
2467 | (qp_type == IB_QPT_GSI || qp_type == IB_QPT_SMI || |
2468 | qp_type == IB_QPT_UD || qp_type == IB_QPT_RAW_PACKET)) { | |
225c7b1f | 2469 | context->pri_path.sched_queue = (qp->port - 1) << 6; |
1ffeb2eb JM |
2470 | if (qp->mlx4_ib_qp_type == MLX4_IB_QPT_SMI || |
2471 | qp->mlx4_ib_qp_type & | |
2472 | (MLX4_IB_QPT_PROXY_SMI_OWNER | MLX4_IB_QPT_TUN_SMI_OWNER)) { | |
225c7b1f | 2473 | context->pri_path.sched_queue |= MLX4_IB_DEFAULT_QP0_SCHED_QUEUE; |
1ffeb2eb JM |
2474 | if (qp->mlx4_ib_qp_type != MLX4_IB_QPT_SMI) |
2475 | context->pri_path.fl = 0x80; | |
2476 | } else { | |
2477 | if (qp->mlx4_ib_qp_type & MLX4_IB_QPT_ANY_SRIOV) | |
2478 | context->pri_path.fl = 0x80; | |
225c7b1f | 2479 | context->pri_path.sched_queue |= MLX4_IB_DEFAULT_SCHED_QUEUE; |
1ffeb2eb | 2480 | } |
2f5bb473 JM |
2481 | if (rdma_port_get_link_layer(&dev->ib_dev, qp->port) == |
2482 | IB_LINK_LAYER_ETHERNET) { | |
2483 | if (qp->mlx4_ib_qp_type == MLX4_IB_QPT_TUN_GSI || | |
2484 | qp->mlx4_ib_qp_type == MLX4_IB_QPT_GSI) | |
2485 | context->pri_path.feup = 1 << 7; /* don't fsm */ | |
2486 | /* handle smac_index */ | |
2487 | if (qp->mlx4_ib_qp_type == MLX4_IB_QPT_UD || | |
2488 | qp->mlx4_ib_qp_type == MLX4_IB_QPT_PROXY_GSI || | |
2489 | qp->mlx4_ib_qp_type == MLX4_IB_QPT_TUN_GSI) { | |
dbf727de | 2490 | err = handle_eth_ud_smac_index(dev, qp, context); |
bede98e7 MD |
2491 | if (err) { |
2492 | err = -EINVAL; | |
2493 | goto out; | |
2494 | } | |
9433c188 MB |
2495 | if (qp->mlx4_ib_qp_type == MLX4_IB_QPT_PROXY_GSI) |
2496 | dev->qp1_proxy[qp->port - 1] = qp; | |
2f5bb473 JM |
2497 | } |
2498 | } | |
225c7b1f RD |
2499 | } |
2500 | ||
400b1ebc | 2501 | if (qp_type == IB_QPT_RAW_PACKET) { |
3528f696 EC |
2502 | context->pri_path.ackto = (context->pri_path.ackto & 0xf8) | |
2503 | MLX4_IB_LINK_TYPE_ETH; | |
d2fce8a9 OG |
2504 | if (dev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) { |
2505 | /* set QP to receive both tunneled & non-tunneled packets */ | |
108809a0 | 2506 | if (!rwq_ind_tbl) |
d2fce8a9 OG |
2507 | context->srqn = cpu_to_be32(7 << 28); |
2508 | } | |
2509 | } | |
3528f696 | 2510 | |
400b1ebc | 2511 | if (qp_type == IB_QPT_UD && (new_state == IB_QPS_RTR)) { |
297e0dad MS |
2512 | int is_eth = rdma_port_get_link_layer( |
2513 | &dev->ib_dev, qp->port) == | |
2514 | IB_LINK_LAYER_ETHERNET; | |
2515 | if (is_eth) { | |
2516 | context->pri_path.ackto = MLX4_IB_LINK_TYPE_ETH; | |
2517 | optpar |= MLX4_QP_OPTPAR_PRIMARY_ADDR_PATH; | |
2518 | } | |
2519 | } | |
2520 | ||
225c7b1f RD |
2521 | if (cur_state == IB_QPS_RTS && new_state == IB_QPS_SQD && |
2522 | attr_mask & IB_QP_EN_SQD_ASYNC_NOTIFY && attr->en_sqd_async_notify) | |
2523 | sqd_event = 1; | |
2524 | else | |
2525 | sqd_event = 0; | |
2526 | ||
89944450 | 2527 | if (!ucontext && |
400b1ebc GL |
2528 | cur_state == IB_QPS_RESET && |
2529 | new_state == IB_QPS_INIT) | |
3b5daf28 | 2530 | context->rlkey_roce_mode |= (1 << 4); |
d57f5f72 | 2531 | |
c0be5fb5 EC |
2532 | /* |
2533 | * Before passing a kernel QP to the HW, make sure that the | |
0e6e7416 RD |
2534 | * ownership bits of the send queue are set and the SQ |
2535 | * headroom is stamped so that the hardware doesn't start | |
2536 | * processing stale work requests. | |
c0be5fb5 | 2537 | */ |
89944450 | 2538 | if (!ucontext && |
400b1ebc GL |
2539 | cur_state == IB_QPS_RESET && |
2540 | new_state == IB_QPS_INIT) { | |
c0be5fb5 EC |
2541 | struct mlx4_wqe_ctrl_seg *ctrl; |
2542 | int i; | |
2543 | ||
0e6e7416 | 2544 | for (i = 0; i < qp->sq.wqe_cnt; ++i) { |
c0be5fb5 EC |
2545 | ctrl = get_send_wqe(qp, i); |
2546 | ctrl->owner_opcode = cpu_to_be32(1 << 31); | |
f95ccffc JM |
2547 | ctrl->qpn_vlan.fence_size = |
2548 | 1 << (qp->sq.wqe_shift - 4); | |
2549 | stamp_send_wqe(qp, i); | |
c0be5fb5 EC |
2550 | } |
2551 | } | |
2552 | ||
108809a0 GL |
2553 | if (rwq_ind_tbl && |
2554 | cur_state == IB_QPS_RESET && | |
2555 | new_state == IB_QPS_INIT) { | |
2556 | fill_qp_rss_context(context, qp); | |
2557 | context->flags |= cpu_to_be32(1 << MLX4_RSS_QPC_FLAG_OFFSET); | |
2558 | } | |
2559 | ||
225c7b1f RD |
2560 | err = mlx4_qp_modify(dev->dev, &qp->mtt, to_mlx4_state(cur_state), |
2561 | to_mlx4_state(new_state), context, optpar, | |
2562 | sqd_event, &qp->mqp); | |
2563 | if (err) | |
2564 | goto out; | |
2565 | ||
2566 | qp->state = new_state; | |
2567 | ||
2568 | if (attr_mask & IB_QP_ACCESS_FLAGS) | |
2569 | qp->atomic_rd_en = attr->qp_access_flags; | |
2570 | if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC) | |
2571 | qp->resp_depth = attr->max_dest_rd_atomic; | |
fa417f7b | 2572 | if (attr_mask & IB_QP_PORT) { |
225c7b1f | 2573 | qp->port = attr->port_num; |
fa417f7b EC |
2574 | update_mcg_macs(dev, qp); |
2575 | } | |
225c7b1f RD |
2576 | if (attr_mask & IB_QP_ALT_PATH) |
2577 | qp->alt_port = attr->alt_port_num; | |
2578 | ||
2579 | if (is_sqp(dev, qp)) | |
2580 | store_sqp_attrs(to_msqp(qp), attr, attr_mask); | |
2581 | ||
2582 | /* | |
2583 | * If we moved QP0 to RTR, bring the IB link up; if we moved | |
2584 | * QP0 to RESET or ERROR, bring the link back down. | |
2585 | */ | |
2586 | if (is_qp0(dev, qp)) { | |
2587 | if (cur_state != IB_QPS_RTR && new_state == IB_QPS_RTR) | |
5ae2a7a8 | 2588 | if (mlx4_INIT_PORT(dev->dev, qp->port)) |
987c8f8f | 2589 | pr_warn("INIT_PORT failed for port %d\n", |
5ae2a7a8 | 2590 | qp->port); |
225c7b1f RD |
2591 | |
2592 | if (cur_state != IB_QPS_RESET && cur_state != IB_QPS_ERR && | |
2593 | (new_state == IB_QPS_RESET || new_state == IB_QPS_ERR)) | |
2594 | mlx4_CLOSE_PORT(dev->dev, qp->port); | |
2595 | } | |
2596 | ||
2597 | /* | |
2598 | * If we moved a kernel QP to RESET, clean up all old CQ | |
2599 | * entries and reinitialize the QP. | |
2600 | */ | |
2f5bb473 | 2601 | if (new_state == IB_QPS_RESET) { |
89944450 | 2602 | if (!ucontext) { |
2f5bb473 | 2603 | mlx4_ib_cq_clean(recv_cq, qp->mqp.qpn, |
400b1ebc | 2604 | ibsrq ? to_msrq(ibsrq) : NULL); |
2f5bb473 JM |
2605 | if (send_cq != recv_cq) |
2606 | mlx4_ib_cq_clean(send_cq, qp->mqp.qpn, NULL); | |
2607 | ||
2608 | qp->rq.head = 0; | |
2609 | qp->rq.tail = 0; | |
2610 | qp->sq.head = 0; | |
2611 | qp->sq.tail = 0; | |
2612 | qp->sq_next_wqe = 0; | |
2613 | if (qp->rq.wqe_cnt) | |
2614 | *qp->db.db = 0; | |
225c7b1f | 2615 | |
2f5bb473 JM |
2616 | if (qp->flags & MLX4_IB_QP_NETIF) |
2617 | mlx4_ib_steer_qp_reg(dev, qp, 0); | |
2618 | } | |
25476b02 | 2619 | if (qp->pri.smac || (!qp->pri.smac && qp->pri.smac_port)) { |
2f5bb473 JM |
2620 | mlx4_unregister_mac(dev->dev, qp->pri.smac_port, qp->pri.smac); |
2621 | qp->pri.smac = 0; | |
25476b02 | 2622 | qp->pri.smac_port = 0; |
2f5bb473 JM |
2623 | } |
2624 | if (qp->alt.smac) { | |
2625 | mlx4_unregister_mac(dev->dev, qp->alt.smac_port, qp->alt.smac); | |
2626 | qp->alt.smac = 0; | |
2627 | } | |
2628 | if (qp->pri.vid < 0x1000) { | |
2629 | mlx4_unregister_vlan(dev->dev, qp->pri.vlan_port, qp->pri.vid); | |
2630 | qp->pri.vid = 0xFFFF; | |
2631 | qp->pri.candidate_vid = 0xFFFF; | |
2632 | qp->pri.update_vid = 0; | |
2633 | } | |
c1c98501 | 2634 | |
2f5bb473 JM |
2635 | if (qp->alt.vid < 0x1000) { |
2636 | mlx4_unregister_vlan(dev->dev, qp->alt.vlan_port, qp->alt.vid); | |
2637 | qp->alt.vid = 0xFFFF; | |
2638 | qp->alt.candidate_vid = 0xFFFF; | |
2639 | qp->alt.update_vid = 0; | |
2640 | } | |
225c7b1f | 2641 | } |
225c7b1f | 2642 | out: |
7b59f0f9 EBE |
2643 | if (err && qp->counter_index) |
2644 | mlx4_ib_free_qp_counter(dev, qp); | |
c1c98501 MB |
2645 | if (err && steer_qp) |
2646 | mlx4_ib_steer_qp_reg(dev, qp, 0); | |
225c7b1f | 2647 | kfree(context); |
25476b02 JM |
2648 | if (qp->pri.candidate_smac || |
2649 | (!qp->pri.candidate_smac && qp->pri.candidate_smac_port)) { | |
2f5bb473 JM |
2650 | if (err) { |
2651 | mlx4_unregister_mac(dev->dev, qp->pri.candidate_smac_port, qp->pri.candidate_smac); | |
2652 | } else { | |
25476b02 | 2653 | if (qp->pri.smac || (!qp->pri.smac && qp->pri.smac_port)) |
2f5bb473 JM |
2654 | mlx4_unregister_mac(dev->dev, qp->pri.smac_port, qp->pri.smac); |
2655 | qp->pri.smac = qp->pri.candidate_smac; | |
2656 | qp->pri.smac_index = qp->pri.candidate_smac_index; | |
2657 | qp->pri.smac_port = qp->pri.candidate_smac_port; | |
2658 | } | |
2659 | qp->pri.candidate_smac = 0; | |
2660 | qp->pri.candidate_smac_index = 0; | |
2661 | qp->pri.candidate_smac_port = 0; | |
2662 | } | |
2663 | if (qp->alt.candidate_smac) { | |
2664 | if (err) { | |
2665 | mlx4_unregister_mac(dev->dev, qp->alt.candidate_smac_port, qp->alt.candidate_smac); | |
2666 | } else { | |
2667 | if (qp->alt.smac) | |
2668 | mlx4_unregister_mac(dev->dev, qp->alt.smac_port, qp->alt.smac); | |
2669 | qp->alt.smac = qp->alt.candidate_smac; | |
2670 | qp->alt.smac_index = qp->alt.candidate_smac_index; | |
2671 | qp->alt.smac_port = qp->alt.candidate_smac_port; | |
2672 | } | |
2673 | qp->alt.candidate_smac = 0; | |
2674 | qp->alt.candidate_smac_index = 0; | |
2675 | qp->alt.candidate_smac_port = 0; | |
2676 | } | |
2677 | ||
2678 | if (qp->pri.update_vid) { | |
2679 | if (err) { | |
2680 | if (qp->pri.candidate_vid < 0x1000) | |
2681 | mlx4_unregister_vlan(dev->dev, qp->pri.candidate_vlan_port, | |
2682 | qp->pri.candidate_vid); | |
2683 | } else { | |
2684 | if (qp->pri.vid < 0x1000) | |
2685 | mlx4_unregister_vlan(dev->dev, qp->pri.vlan_port, | |
2686 | qp->pri.vid); | |
2687 | qp->pri.vid = qp->pri.candidate_vid; | |
2688 | qp->pri.vlan_port = qp->pri.candidate_vlan_port; | |
2689 | qp->pri.vlan_index = qp->pri.candidate_vlan_index; | |
2690 | } | |
2691 | qp->pri.candidate_vid = 0xFFFF; | |
2692 | qp->pri.update_vid = 0; | |
2693 | } | |
2694 | ||
2695 | if (qp->alt.update_vid) { | |
2696 | if (err) { | |
2697 | if (qp->alt.candidate_vid < 0x1000) | |
2698 | mlx4_unregister_vlan(dev->dev, qp->alt.candidate_vlan_port, | |
2699 | qp->alt.candidate_vid); | |
2700 | } else { | |
2701 | if (qp->alt.vid < 0x1000) | |
2702 | mlx4_unregister_vlan(dev->dev, qp->alt.vlan_port, | |
2703 | qp->alt.vid); | |
2704 | qp->alt.vid = qp->alt.candidate_vid; | |
2705 | qp->alt.vlan_port = qp->alt.candidate_vlan_port; | |
2706 | qp->alt.vlan_index = qp->alt.candidate_vlan_index; | |
2707 | } | |
2708 | qp->alt.candidate_vid = 0xFFFF; | |
2709 | qp->alt.update_vid = 0; | |
2710 | } | |
2711 | ||
225c7b1f RD |
2712 | return err; |
2713 | } | |
2714 | ||
3078f5f1 GL |
2715 | enum { |
2716 | MLX4_IB_MODIFY_QP_RSS_SUP_ATTR_MSK = (IB_QP_STATE | | |
2717 | IB_QP_PORT), | |
2718 | }; | |
2719 | ||
e1b866c6 MS |
2720 | static int _mlx4_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, |
2721 | int attr_mask, struct ib_udata *udata) | |
65adfa91 MT |
2722 | { |
2723 | struct mlx4_ib_dev *dev = to_mdev(ibqp->device); | |
2724 | struct mlx4_ib_qp *qp = to_mqp(ibqp); | |
2725 | enum ib_qp_state cur_state, new_state; | |
2726 | int err = -EINVAL; | |
65adfa91 MT |
2727 | mutex_lock(&qp->mutex); |
2728 | ||
2729 | cur_state = attr_mask & IB_QP_CUR_STATE ? attr->cur_qp_state : qp->state; | |
2730 | new_state = attr_mask & IB_QP_STATE ? attr->qp_state : cur_state; | |
2731 | ||
dd5f03be | 2732 | if (!ib_modify_qp_is_ok(cur_state, new_state, ibqp->qp_type, |
d31131bb | 2733 | attr_mask)) { |
b1d8eb5a JM |
2734 | pr_debug("qpn 0x%x: invalid attribute mask specified " |
2735 | "for transition %d to %d. qp_type %d," | |
2736 | " attr_mask 0x%x\n", | |
2737 | ibqp->qp_num, cur_state, new_state, | |
2738 | ibqp->qp_type, attr_mask); | |
65adfa91 | 2739 | goto out; |
b1d8eb5a | 2740 | } |
65adfa91 | 2741 | |
3078f5f1 GL |
2742 | if (ibqp->rwq_ind_tbl) { |
2743 | if (!(((cur_state == IB_QPS_RESET) && | |
2744 | (new_state == IB_QPS_INIT)) || | |
2745 | ((cur_state == IB_QPS_INIT) && | |
2746 | (new_state == IB_QPS_RTR)))) { | |
2747 | pr_debug("qpn 0x%x: RSS QP unsupported transition %d to %d\n", | |
2748 | ibqp->qp_num, cur_state, new_state); | |
2749 | ||
2750 | err = -EOPNOTSUPP; | |
2751 | goto out; | |
2752 | } | |
2753 | ||
2754 | if (attr_mask & ~MLX4_IB_MODIFY_QP_RSS_SUP_ATTR_MSK) { | |
2755 | pr_debug("qpn 0x%x: RSS QP unsupported attribute mask 0x%x for transition %d to %d\n", | |
2756 | ibqp->qp_num, attr_mask, cur_state, new_state); | |
2757 | ||
2758 | err = -EOPNOTSUPP; | |
2759 | goto out; | |
2760 | } | |
2761 | } | |
2762 | ||
c6215745 MS |
2763 | if (mlx4_is_bonded(dev->dev) && (attr_mask & IB_QP_PORT)) { |
2764 | if ((cur_state == IB_QPS_RESET) && (new_state == IB_QPS_INIT)) { | |
2765 | if ((ibqp->qp_type == IB_QPT_RC) || | |
2766 | (ibqp->qp_type == IB_QPT_UD) || | |
2767 | (ibqp->qp_type == IB_QPT_UC) || | |
2768 | (ibqp->qp_type == IB_QPT_RAW_PACKET) || | |
2769 | (ibqp->qp_type == IB_QPT_XRC_INI)) { | |
2770 | attr->port_num = mlx4_ib_bond_next_port(dev); | |
2771 | } | |
2772 | } else { | |
2773 | /* no sense in changing port_num | |
2774 | * when ports are bonded */ | |
2775 | attr_mask &= ~IB_QP_PORT; | |
2776 | } | |
2777 | } | |
2778 | ||
65adfa91 | 2779 | if ((attr_mask & IB_QP_PORT) && |
1ffeb2eb | 2780 | (attr->port_num == 0 || attr->port_num > dev->num_ports)) { |
b1d8eb5a JM |
2781 | pr_debug("qpn 0x%x: invalid port number (%d) specified " |
2782 | "for transition %d to %d. qp_type %d\n", | |
2783 | ibqp->qp_num, attr->port_num, cur_state, | |
2784 | new_state, ibqp->qp_type); | |
65adfa91 MT |
2785 | goto out; |
2786 | } | |
2787 | ||
3987a2d3 OG |
2788 | if ((attr_mask & IB_QP_PORT) && (ibqp->qp_type == IB_QPT_RAW_PACKET) && |
2789 | (rdma_port_get_link_layer(&dev->ib_dev, attr->port_num) != | |
2790 | IB_LINK_LAYER_ETHERNET)) | |
2791 | goto out; | |
2792 | ||
5ae2a7a8 RD |
2793 | if (attr_mask & IB_QP_PKEY_INDEX) { |
2794 | int p = attr_mask & IB_QP_PORT ? attr->port_num : qp->port; | |
b1d8eb5a JM |
2795 | if (attr->pkey_index >= dev->dev->caps.pkey_table_len[p]) { |
2796 | pr_debug("qpn 0x%x: invalid pkey index (%d) specified " | |
2797 | "for transition %d to %d. qp_type %d\n", | |
2798 | ibqp->qp_num, attr->pkey_index, cur_state, | |
2799 | new_state, ibqp->qp_type); | |
5ae2a7a8 | 2800 | goto out; |
b1d8eb5a | 2801 | } |
5ae2a7a8 RD |
2802 | } |
2803 | ||
65adfa91 MT |
2804 | if (attr_mask & IB_QP_MAX_QP_RD_ATOMIC && |
2805 | attr->max_rd_atomic > dev->dev->caps.max_qp_init_rdma) { | |
b1d8eb5a JM |
2806 | pr_debug("qpn 0x%x: max_rd_atomic (%d) too large. " |
2807 | "Transition %d to %d. qp_type %d\n", | |
2808 | ibqp->qp_num, attr->max_rd_atomic, cur_state, | |
2809 | new_state, ibqp->qp_type); | |
65adfa91 MT |
2810 | goto out; |
2811 | } | |
2812 | ||
2813 | if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC && | |
2814 | attr->max_dest_rd_atomic > dev->dev->caps.max_qp_dest_rdma) { | |
b1d8eb5a JM |
2815 | pr_debug("qpn 0x%x: max_dest_rd_atomic (%d) too large. " |
2816 | "Transition %d to %d. qp_type %d\n", | |
2817 | ibqp->qp_num, attr->max_dest_rd_atomic, cur_state, | |
2818 | new_state, ibqp->qp_type); | |
65adfa91 MT |
2819 | goto out; |
2820 | } | |
2821 | ||
2822 | if (cur_state == new_state && cur_state == IB_QPS_RESET) { | |
2823 | err = 0; | |
2824 | goto out; | |
2825 | } | |
2826 | ||
3078f5f1 | 2827 | if (ibqp->rwq_ind_tbl && (new_state == IB_QPS_INIT)) { |
89944450 SR |
2828 | err = bringup_rss_rwqs(ibqp->rwq_ind_tbl, attr->port_num, |
2829 | udata); | |
3078f5f1 GL |
2830 | if (err) |
2831 | goto out; | |
2832 | } | |
2833 | ||
400b1ebc | 2834 | err = __mlx4_ib_modify_qp(ibqp, MLX4_IB_QP_SRC, attr, attr_mask, |
89944450 | 2835 | cur_state, new_state, udata); |
65adfa91 | 2836 | |
3078f5f1 | 2837 | if (ibqp->rwq_ind_tbl && err) |
89944450 | 2838 | bring_down_rss_rwqs(ibqp->rwq_ind_tbl, udata); |
3078f5f1 | 2839 | |
c6215745 MS |
2840 | if (mlx4_is_bonded(dev->dev) && (attr_mask & IB_QP_PORT)) |
2841 | attr->port_num = 1; | |
2842 | ||
65adfa91 MT |
2843 | out: |
2844 | mutex_unlock(&qp->mutex); | |
2845 | return err; | |
2846 | } | |
2847 | ||
e1b866c6 MS |
2848 | int mlx4_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, |
2849 | int attr_mask, struct ib_udata *udata) | |
2850 | { | |
2851 | struct mlx4_ib_qp *mqp = to_mqp(ibqp); | |
2852 | int ret; | |
2853 | ||
2854 | ret = _mlx4_ib_modify_qp(ibqp, attr, attr_mask, udata); | |
2855 | ||
2856 | if (mqp->mlx4_ib_qp_type == MLX4_IB_QPT_GSI) { | |
2857 | struct mlx4_ib_sqp *sqp = to_msqp(mqp); | |
2858 | int err = 0; | |
2859 | ||
2860 | if (sqp->roce_v2_gsi) | |
2861 | err = ib_modify_qp(sqp->roce_v2_gsi, attr, attr_mask); | |
2862 | if (err) | |
2863 | pr_err("Failed to modify GSI QP for RoCEv2 (%d)\n", | |
2864 | err); | |
2865 | } | |
2866 | return ret; | |
2867 | } | |
2868 | ||
99ec41d0 JM |
2869 | static int vf_get_qp0_qkey(struct mlx4_dev *dev, int qpn, u32 *qkey) |
2870 | { | |
2871 | int i; | |
2872 | for (i = 0; i < dev->caps.num_ports; i++) { | |
c73c8b1e EBE |
2873 | if (qpn == dev->caps.spec_qps[i].qp0_proxy || |
2874 | qpn == dev->caps.spec_qps[i].qp0_tunnel) { | |
2875 | *qkey = dev->caps.spec_qps[i].qp0_qkey; | |
99ec41d0 JM |
2876 | return 0; |
2877 | } | |
2878 | } | |
2879 | return -EINVAL; | |
2880 | } | |
2881 | ||
1ffeb2eb | 2882 | static int build_sriov_qp0_header(struct mlx4_ib_sqp *sqp, |
f696bf6d | 2883 | const struct ib_ud_wr *wr, |
1ffeb2eb JM |
2884 | void *wqe, unsigned *mlx_seg_len) |
2885 | { | |
2886 | struct mlx4_ib_dev *mdev = to_mdev(sqp->qp.ibqp.device); | |
2887 | struct ib_device *ib_dev = &mdev->ib_dev; | |
2888 | struct mlx4_wqe_mlx_seg *mlx = wqe; | |
2889 | struct mlx4_wqe_inline_seg *inl = wqe + sizeof *mlx; | |
e622f2f4 | 2890 | struct mlx4_ib_ah *ah = to_mah(wr->ah); |
1ffeb2eb JM |
2891 | u16 pkey; |
2892 | u32 qkey; | |
2893 | int send_size; | |
2894 | int header_size; | |
2895 | int spc; | |
074fdd59 | 2896 | int err; |
1ffeb2eb JM |
2897 | int i; |
2898 | ||
e622f2f4 | 2899 | if (wr->wr.opcode != IB_WR_SEND) |
1ffeb2eb JM |
2900 | return -EINVAL; |
2901 | ||
2902 | send_size = 0; | |
2903 | ||
e622f2f4 CH |
2904 | for (i = 0; i < wr->wr.num_sge; ++i) |
2905 | send_size += wr->wr.sg_list[i].length; | |
1ffeb2eb JM |
2906 | |
2907 | /* for proxy-qp0 sends, need to add in size of tunnel header */ | |
2908 | /* for tunnel-qp0 sends, tunnel header is already in s/g list */ | |
2909 | if (sqp->qp.mlx4_ib_qp_type == MLX4_IB_QPT_PROXY_SMI_OWNER) | |
2910 | send_size += sizeof (struct mlx4_ib_tunnel_header); | |
2911 | ||
25f40220 | 2912 | ib_ud_header_init(send_size, 1, 0, 0, 0, 0, 0, 0, &sqp->ud_header); |
1ffeb2eb JM |
2913 | |
2914 | if (sqp->qp.mlx4_ib_qp_type == MLX4_IB_QPT_PROXY_SMI_OWNER) { | |
2915 | sqp->ud_header.lrh.service_level = | |
2916 | be32_to_cpu(ah->av.ib.sl_tclass_flowlabel) >> 28; | |
2917 | sqp->ud_header.lrh.destination_lid = | |
2918 | cpu_to_be16(ah->av.ib.g_slid & 0x7f); | |
2919 | sqp->ud_header.lrh.source_lid = | |
2920 | cpu_to_be16(ah->av.ib.g_slid & 0x7f); | |
2921 | } | |
2922 | ||
2923 | mlx->flags &= cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE); | |
2924 | ||
2925 | /* force loopback */ | |
2926 | mlx->flags |= cpu_to_be32(MLX4_WQE_MLX_VL15 | 0x1 | MLX4_WQE_MLX_SLR); | |
2927 | mlx->rlid = sqp->ud_header.lrh.destination_lid; | |
2928 | ||
2929 | sqp->ud_header.lrh.virtual_lane = 0; | |
e622f2f4 | 2930 | sqp->ud_header.bth.solicited_event = !!(wr->wr.send_flags & IB_SEND_SOLICITED); |
074fdd59 JM |
2931 | err = ib_get_cached_pkey(ib_dev, sqp->qp.port, 0, &pkey); |
2932 | if (err) | |
2933 | return err; | |
1ffeb2eb JM |
2934 | sqp->ud_header.bth.pkey = cpu_to_be16(pkey); |
2935 | if (sqp->qp.mlx4_ib_qp_type == MLX4_IB_QPT_TUN_SMI_OWNER) | |
e622f2f4 | 2936 | sqp->ud_header.bth.destination_qpn = cpu_to_be32(wr->remote_qpn); |
1ffeb2eb JM |
2937 | else |
2938 | sqp->ud_header.bth.destination_qpn = | |
c73c8b1e | 2939 | cpu_to_be32(mdev->dev->caps.spec_qps[sqp->qp.port - 1].qp0_tunnel); |
1ffeb2eb JM |
2940 | |
2941 | sqp->ud_header.bth.psn = cpu_to_be32((sqp->send_psn++) & ((1 << 24) - 1)); | |
99ec41d0 JM |
2942 | if (mlx4_is_master(mdev->dev)) { |
2943 | if (mlx4_get_parav_qkey(mdev->dev, sqp->qp.mqp.qpn, &qkey)) | |
2944 | return -EINVAL; | |
2945 | } else { | |
2946 | if (vf_get_qp0_qkey(mdev->dev, sqp->qp.mqp.qpn, &qkey)) | |
2947 | return -EINVAL; | |
2948 | } | |
1ffeb2eb JM |
2949 | sqp->ud_header.deth.qkey = cpu_to_be32(qkey); |
2950 | sqp->ud_header.deth.source_qpn = cpu_to_be32(sqp->qp.mqp.qpn); | |
2951 | ||
2952 | sqp->ud_header.bth.opcode = IB_OPCODE_UD_SEND_ONLY; | |
2953 | sqp->ud_header.immediate_present = 0; | |
2954 | ||
2955 | header_size = ib_ud_header_pack(&sqp->ud_header, sqp->header_buf); | |
2956 | ||
2957 | /* | |
2958 | * Inline data segments may not cross a 64 byte boundary. If | |
2959 | * our UD header is bigger than the space available up to the | |
2960 | * next 64 byte boundary in the WQE, use two inline data | |
2961 | * segments to hold the UD header. | |
2962 | */ | |
2963 | spc = MLX4_INLINE_ALIGN - | |
2964 | ((unsigned long) (inl + 1) & (MLX4_INLINE_ALIGN - 1)); | |
2965 | if (header_size <= spc) { | |
2966 | inl->byte_count = cpu_to_be32(1 << 31 | header_size); | |
2967 | memcpy(inl + 1, sqp->header_buf, header_size); | |
2968 | i = 1; | |
2969 | } else { | |
2970 | inl->byte_count = cpu_to_be32(1 << 31 | spc); | |
2971 | memcpy(inl + 1, sqp->header_buf, spc); | |
2972 | ||
2973 | inl = (void *) (inl + 1) + spc; | |
2974 | memcpy(inl + 1, sqp->header_buf + spc, header_size - spc); | |
2975 | /* | |
2976 | * Need a barrier here to make sure all the data is | |
2977 | * visible before the byte_count field is set. | |
2978 | * Otherwise the HCA prefetcher could grab the 64-byte | |
2979 | * chunk with this inline segment and get a valid (!= | |
2980 | * 0xffffffff) byte count but stale data, and end up | |
2981 | * generating a packet with bad headers. | |
2982 | * | |
2983 | * The first inline segment's byte_count field doesn't | |
2984 | * need a barrier, because it comes after a | |
2985 | * control/MLX segment and therefore is at an offset | |
2986 | * of 16 mod 64. | |
2987 | */ | |
2988 | wmb(); | |
2989 | inl->byte_count = cpu_to_be32(1 << 31 | (header_size - spc)); | |
2990 | i = 2; | |
2991 | } | |
2992 | ||
2993 | *mlx_seg_len = | |
2994 | ALIGN(i * sizeof (struct mlx4_wqe_inline_seg) + header_size, 16); | |
2995 | return 0; | |
2996 | } | |
2997 | ||
fd10ed8e JM |
2998 | static u8 sl_to_vl(struct mlx4_ib_dev *dev, u8 sl, int port_num) |
2999 | { | |
3000 | union sl2vl_tbl_to_u64 tmp_vltab; | |
3001 | u8 vl; | |
3002 | ||
3003 | if (sl > 15) | |
3004 | return 0xf; | |
3005 | tmp_vltab.sl64 = atomic64_read(&dev->sl2vl[port_num - 1]); | |
3006 | vl = tmp_vltab.sl8[sl >> 1]; | |
3007 | if (sl & 1) | |
3008 | vl &= 0x0f; | |
3009 | else | |
3010 | vl >>= 4; | |
3011 | return vl; | |
3012 | } | |
3013 | ||
a748d60d TB |
3014 | static int fill_gid_by_hw_index(struct mlx4_ib_dev *ibdev, u8 port_num, |
3015 | int index, union ib_gid *gid, | |
3016 | enum ib_gid_type *gid_type) | |
3017 | { | |
3018 | struct mlx4_ib_iboe *iboe = &ibdev->iboe; | |
3019 | struct mlx4_port_gid_table *port_gid_table; | |
3020 | unsigned long flags; | |
3021 | ||
3022 | port_gid_table = &iboe->gids[port_num - 1]; | |
3023 | spin_lock_irqsave(&iboe->lock, flags); | |
3024 | memcpy(gid, &port_gid_table->gids[index].gid, sizeof(*gid)); | |
3025 | *gid_type = port_gid_table->gids[index].gid_type; | |
3026 | spin_unlock_irqrestore(&iboe->lock, flags); | |
25e62655 | 3027 | if (rdma_is_zero_gid(gid)) |
a748d60d TB |
3028 | return -ENOENT; |
3029 | ||
3030 | return 0; | |
3031 | } | |
3032 | ||
3ef967a4 | 3033 | #define MLX4_ROCEV2_QP1_SPORT 0xC000 |
f696bf6d | 3034 | static int build_mlx_header(struct mlx4_ib_sqp *sqp, const struct ib_ud_wr *wr, |
f438000f | 3035 | void *wqe, unsigned *mlx_seg_len) |
225c7b1f | 3036 | { |
a478868a | 3037 | struct ib_device *ib_dev = sqp->qp.ibqp.device; |
a748d60d | 3038 | struct mlx4_ib_dev *ibdev = to_mdev(ib_dev); |
225c7b1f | 3039 | struct mlx4_wqe_mlx_seg *mlx = wqe; |
6ee51a4e | 3040 | struct mlx4_wqe_ctrl_seg *ctrl = wqe; |
225c7b1f | 3041 | struct mlx4_wqe_inline_seg *inl = wqe + sizeof *mlx; |
e622f2f4 | 3042 | struct mlx4_ib_ah *ah = to_mah(wr->ah); |
4c3eb3ca | 3043 | union ib_gid sgid; |
225c7b1f RD |
3044 | u16 pkey; |
3045 | int send_size; | |
3046 | int header_size; | |
e61ef241 | 3047 | int spc; |
225c7b1f | 3048 | int i; |
1ffeb2eb | 3049 | int err = 0; |
57d88cff | 3050 | u16 vlan = 0xffff; |
a29bec12 RD |
3051 | bool is_eth; |
3052 | bool is_vlan = false; | |
3053 | bool is_grh; | |
3ef967a4 MS |
3054 | bool is_udp = false; |
3055 | int ip_version = 0; | |
225c7b1f RD |
3056 | |
3057 | send_size = 0; | |
e622f2f4 CH |
3058 | for (i = 0; i < wr->wr.num_sge; ++i) |
3059 | send_size += wr->wr.sg_list[i].length; | |
225c7b1f | 3060 | |
fa417f7b EC |
3061 | is_eth = rdma_port_get_link_layer(sqp->qp.ibqp.device, sqp->qp.port) == IB_LINK_LAYER_ETHERNET; |
3062 | is_grh = mlx4_ib_ah_grh_present(ah); | |
4c3eb3ca | 3063 | if (is_eth) { |
a748d60d | 3064 | enum ib_gid_type gid_type; |
1ffeb2eb JM |
3065 | if (mlx4_is_mfunc(to_mdev(ib_dev)->dev)) { |
3066 | /* When multi-function is enabled, the ib_core gid | |
3067 | * indexes don't necessarily match the hw ones, so | |
3068 | * we must use our own cache */ | |
6ee51a4e JM |
3069 | err = mlx4_get_roce_gid_from_slave(to_mdev(ib_dev)->dev, |
3070 | be32_to_cpu(ah->av.ib.port_pd) >> 24, | |
3071 | ah->av.ib.gid_index, &sgid.raw[0]); | |
3072 | if (err) | |
3073 | return err; | |
1ffeb2eb | 3074 | } else { |
a748d60d TB |
3075 | err = fill_gid_by_hw_index(ibdev, sqp->qp.port, |
3076 | ah->av.ib.gid_index, | |
3077 | &sgid, &gid_type); | |
3ef967a4 | 3078 | if (!err) { |
a748d60d | 3079 | is_udp = gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP; |
3ef967a4 MS |
3080 | if (is_udp) { |
3081 | if (ipv6_addr_v4mapped((struct in6_addr *)&sgid)) | |
3082 | ip_version = 4; | |
3083 | else | |
3084 | ip_version = 6; | |
3085 | is_grh = false; | |
3086 | } | |
3087 | } else { | |
1ffeb2eb | 3088 | return err; |
3ef967a4 | 3089 | } |
1ffeb2eb | 3090 | } |
0e9855db | 3091 | if (ah->av.eth.vlan != cpu_to_be16(0xffff)) { |
297e0dad MS |
3092 | vlan = be16_to_cpu(ah->av.eth.vlan) & 0x0fff; |
3093 | is_vlan = 1; | |
3094 | } | |
4c3eb3ca | 3095 | } |
25f40220 | 3096 | err = ib_ud_header_init(send_size, !is_eth, is_eth, is_vlan, is_grh, |
3ef967a4 | 3097 | ip_version, is_udp, 0, &sqp->ud_header); |
25f40220 MS |
3098 | if (err) |
3099 | return err; | |
fa417f7b EC |
3100 | |
3101 | if (!is_eth) { | |
3102 | sqp->ud_header.lrh.service_level = | |
3103 | be32_to_cpu(ah->av.ib.sl_tclass_flowlabel) >> 28; | |
3104 | sqp->ud_header.lrh.destination_lid = ah->av.ib.dlid; | |
3105 | sqp->ud_header.lrh.source_lid = cpu_to_be16(ah->av.ib.g_slid & 0x7f); | |
3106 | } | |
225c7b1f | 3107 | |
3ef967a4 | 3108 | if (is_grh || (ip_version == 6)) { |
225c7b1f | 3109 | sqp->ud_header.grh.traffic_class = |
fa417f7b | 3110 | (be32_to_cpu(ah->av.ib.sl_tclass_flowlabel) >> 20) & 0xff; |
225c7b1f | 3111 | sqp->ud_header.grh.flow_label = |
fa417f7b EC |
3112 | ah->av.ib.sl_tclass_flowlabel & cpu_to_be32(0xfffff); |
3113 | sqp->ud_header.grh.hop_limit = ah->av.ib.hop_limit; | |
baa0be70 | 3114 | if (is_eth) { |
6ee51a4e | 3115 | memcpy(sqp->ud_header.grh.source_gid.raw, sgid.raw, 16); |
baa0be70 JM |
3116 | } else { |
3117 | if (mlx4_is_mfunc(to_mdev(ib_dev)->dev)) { | |
3118 | /* When multi-function is enabled, the ib_core gid | |
3119 | * indexes don't necessarily match the hw ones, so | |
3120 | * we must use our own cache | |
3121 | */ | |
3122 | sqp->ud_header.grh.source_gid.global.subnet_prefix = | |
8ec07bf8 JM |
3123 | cpu_to_be64(atomic64_read(&(to_mdev(ib_dev)->sriov. |
3124 | demux[sqp->qp.port - 1]. | |
3125 | subnet_prefix))); | |
baa0be70 JM |
3126 | sqp->ud_header.grh.source_gid.global.interface_id = |
3127 | to_mdev(ib_dev)->sriov.demux[sqp->qp.port - 1]. | |
3128 | guid_cache[ah->av.ib.gid_index]; | |
3129 | } else { | |
89af969a PP |
3130 | sqp->ud_header.grh.source_gid = |
3131 | ah->ibah.sgid_attr->gid; | |
baa0be70 | 3132 | } |
6ee51a4e | 3133 | } |
225c7b1f | 3134 | memcpy(sqp->ud_header.grh.destination_gid.raw, |
fa417f7b | 3135 | ah->av.ib.dgid, 16); |
225c7b1f RD |
3136 | } |
3137 | ||
3ef967a4 MS |
3138 | if (ip_version == 4) { |
3139 | sqp->ud_header.ip4.tos = | |
3140 | (be32_to_cpu(ah->av.ib.sl_tclass_flowlabel) >> 20) & 0xff; | |
3141 | sqp->ud_header.ip4.id = 0; | |
3142 | sqp->ud_header.ip4.frag_off = htons(IP_DF); | |
3143 | sqp->ud_header.ip4.ttl = ah->av.eth.hop_limit; | |
3144 | ||
3145 | memcpy(&sqp->ud_header.ip4.saddr, | |
3146 | sgid.raw + 12, 4); | |
3147 | memcpy(&sqp->ud_header.ip4.daddr, ah->av.ib.dgid + 12, 4); | |
3148 | sqp->ud_header.ip4.check = ib_ud_ip4_csum(&sqp->ud_header); | |
3149 | } | |
3150 | ||
3151 | if (is_udp) { | |
3152 | sqp->ud_header.udp.dport = htons(ROCE_V2_UDP_DPORT); | |
3153 | sqp->ud_header.udp.sport = htons(MLX4_ROCEV2_QP1_SPORT); | |
3154 | sqp->ud_header.udp.csum = 0; | |
3155 | } | |
3156 | ||
225c7b1f | 3157 | mlx->flags &= cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE); |
fa417f7b EC |
3158 | |
3159 | if (!is_eth) { | |
3160 | mlx->flags |= cpu_to_be32((!sqp->qp.ibqp.qp_num ? MLX4_WQE_MLX_VL15 : 0) | | |
3161 | (sqp->ud_header.lrh.destination_lid == | |
3162 | IB_LID_PERMISSIVE ? MLX4_WQE_MLX_SLR : 0) | | |
3163 | (sqp->ud_header.lrh.service_level << 8)); | |
1ffeb2eb JM |
3164 | if (ah->av.ib.port_pd & cpu_to_be32(0x80000000)) |
3165 | mlx->flags |= cpu_to_be32(0x1); /* force loopback */ | |
fa417f7b EC |
3166 | mlx->rlid = sqp->ud_header.lrh.destination_lid; |
3167 | } | |
225c7b1f | 3168 | |
e622f2f4 | 3169 | switch (wr->wr.opcode) { |
225c7b1f RD |
3170 | case IB_WR_SEND: |
3171 | sqp->ud_header.bth.opcode = IB_OPCODE_UD_SEND_ONLY; | |
3172 | sqp->ud_header.immediate_present = 0; | |
3173 | break; | |
3174 | case IB_WR_SEND_WITH_IMM: | |
3175 | sqp->ud_header.bth.opcode = IB_OPCODE_UD_SEND_ONLY_WITH_IMMEDIATE; | |
3176 | sqp->ud_header.immediate_present = 1; | |
e622f2f4 | 3177 | sqp->ud_header.immediate_data = wr->wr.ex.imm_data; |
225c7b1f RD |
3178 | break; |
3179 | default: | |
3180 | return -EINVAL; | |
3181 | } | |
3182 | ||
fa417f7b | 3183 | if (is_eth) { |
6ee51a4e | 3184 | struct in6_addr in6; |
3ef967a4 | 3185 | u16 ether_type; |
c0c1d3d7 OD |
3186 | u16 pcp = (be32_to_cpu(ah->av.ib.sl_tclass_flowlabel) >> 29) << 13; |
3187 | ||
69ae5439 | 3188 | ether_type = (!is_udp) ? ETH_P_IBOE: |
3ef967a4 MS |
3189 | (ip_version == 4 ? ETH_P_IP : ETH_P_IPV6); |
3190 | ||
c0c1d3d7 | 3191 | mlx->sched_prio = cpu_to_be16(pcp); |
fa417f7b | 3192 | |
1049f138 | 3193 | ether_addr_copy(sqp->ud_header.eth.smac_h, ah->av.eth.s_mac); |
fa417f7b | 3194 | memcpy(sqp->ud_header.eth.dmac_h, ah->av.eth.mac, 6); |
6ee51a4e JM |
3195 | memcpy(&ctrl->srcrb_flags16[0], ah->av.eth.mac, 2); |
3196 | memcpy(&ctrl->imm, ah->av.eth.mac + 2, 4); | |
3197 | memcpy(&in6, sgid.raw, sizeof(in6)); | |
5ea8bbfc | 3198 | |
3e0629cb | 3199 | |
fa417f7b EC |
3200 | if (!memcmp(sqp->ud_header.eth.smac_h, sqp->ud_header.eth.dmac_h, 6)) |
3201 | mlx->flags |= cpu_to_be32(MLX4_WQE_CTRL_FORCE_LOOPBACK); | |
4c3eb3ca | 3202 | if (!is_vlan) { |
3ef967a4 | 3203 | sqp->ud_header.eth.type = cpu_to_be16(ether_type); |
4c3eb3ca | 3204 | } else { |
3ef967a4 | 3205 | sqp->ud_header.vlan.type = cpu_to_be16(ether_type); |
4c3eb3ca EC |
3206 | sqp->ud_header.vlan.tag = cpu_to_be16(vlan | pcp); |
3207 | } | |
fa417f7b | 3208 | } else { |
fd10ed8e JM |
3209 | sqp->ud_header.lrh.virtual_lane = !sqp->qp.ibqp.qp_num ? 15 : |
3210 | sl_to_vl(to_mdev(ib_dev), | |
3211 | sqp->ud_header.lrh.service_level, | |
3212 | sqp->qp.port); | |
3213 | if (sqp->qp.ibqp.qp_num && sqp->ud_header.lrh.virtual_lane == 15) | |
3214 | return -EINVAL; | |
fa417f7b EC |
3215 | if (sqp->ud_header.lrh.destination_lid == IB_LID_PERMISSIVE) |
3216 | sqp->ud_header.lrh.source_lid = IB_LID_PERMISSIVE; | |
3217 | } | |
e622f2f4 | 3218 | sqp->ud_header.bth.solicited_event = !!(wr->wr.send_flags & IB_SEND_SOLICITED); |
225c7b1f | 3219 | if (!sqp->qp.ibqp.qp_num) |
074fdd59 JM |
3220 | err = ib_get_cached_pkey(ib_dev, sqp->qp.port, sqp->pkey_index, |
3221 | &pkey); | |
225c7b1f | 3222 | else |
074fdd59 JM |
3223 | err = ib_get_cached_pkey(ib_dev, sqp->qp.port, wr->pkey_index, |
3224 | &pkey); | |
3225 | if (err) | |
3226 | return err; | |
3227 | ||
225c7b1f | 3228 | sqp->ud_header.bth.pkey = cpu_to_be16(pkey); |
e622f2f4 | 3229 | sqp->ud_header.bth.destination_qpn = cpu_to_be32(wr->remote_qpn); |
225c7b1f | 3230 | sqp->ud_header.bth.psn = cpu_to_be32((sqp->send_psn++) & ((1 << 24) - 1)); |
e622f2f4 CH |
3231 | sqp->ud_header.deth.qkey = cpu_to_be32(wr->remote_qkey & 0x80000000 ? |
3232 | sqp->qkey : wr->remote_qkey); | |
225c7b1f RD |
3233 | sqp->ud_header.deth.source_qpn = cpu_to_be32(sqp->qp.ibqp.qp_num); |
3234 | ||
3235 | header_size = ib_ud_header_pack(&sqp->ud_header, sqp->header_buf); | |
3236 | ||
3237 | if (0) { | |
987c8f8f | 3238 | pr_err("built UD header of size %d:\n", header_size); |
225c7b1f RD |
3239 | for (i = 0; i < header_size / 4; ++i) { |
3240 | if (i % 8 == 0) | |
987c8f8f SP |
3241 | pr_err(" [%02x] ", i * 4); |
3242 | pr_cont(" %08x", | |
3243 | be32_to_cpu(((__be32 *) sqp->header_buf)[i])); | |
225c7b1f | 3244 | if ((i + 1) % 8 == 0) |
987c8f8f | 3245 | pr_cont("\n"); |
225c7b1f | 3246 | } |
987c8f8f | 3247 | pr_err("\n"); |
225c7b1f RD |
3248 | } |
3249 | ||
e61ef241 RD |
3250 | /* |
3251 | * Inline data segments may not cross a 64 byte boundary. If | |
3252 | * our UD header is bigger than the space available up to the | |
3253 | * next 64 byte boundary in the WQE, use two inline data | |
3254 | * segments to hold the UD header. | |
3255 | */ | |
3256 | spc = MLX4_INLINE_ALIGN - | |
3257 | ((unsigned long) (inl + 1) & (MLX4_INLINE_ALIGN - 1)); | |
3258 | if (header_size <= spc) { | |
3259 | inl->byte_count = cpu_to_be32(1 << 31 | header_size); | |
3260 | memcpy(inl + 1, sqp->header_buf, header_size); | |
3261 | i = 1; | |
3262 | } else { | |
3263 | inl->byte_count = cpu_to_be32(1 << 31 | spc); | |
3264 | memcpy(inl + 1, sqp->header_buf, spc); | |
3265 | ||
3266 | inl = (void *) (inl + 1) + spc; | |
3267 | memcpy(inl + 1, sqp->header_buf + spc, header_size - spc); | |
3268 | /* | |
3269 | * Need a barrier here to make sure all the data is | |
3270 | * visible before the byte_count field is set. | |
3271 | * Otherwise the HCA prefetcher could grab the 64-byte | |
3272 | * chunk with this inline segment and get a valid (!= | |
3273 | * 0xffffffff) byte count but stale data, and end up | |
3274 | * generating a packet with bad headers. | |
3275 | * | |
3276 | * The first inline segment's byte_count field doesn't | |
3277 | * need a barrier, because it comes after a | |
3278 | * control/MLX segment and therefore is at an offset | |
3279 | * of 16 mod 64. | |
3280 | */ | |
3281 | wmb(); | |
3282 | inl->byte_count = cpu_to_be32(1 << 31 | (header_size - spc)); | |
3283 | i = 2; | |
3284 | } | |
225c7b1f | 3285 | |
f438000f RD |
3286 | *mlx_seg_len = |
3287 | ALIGN(i * sizeof (struct mlx4_wqe_inline_seg) + header_size, 16); | |
3288 | return 0; | |
225c7b1f RD |
3289 | } |
3290 | ||
3291 | static int mlx4_wq_overflow(struct mlx4_ib_wq *wq, int nreq, struct ib_cq *ib_cq) | |
3292 | { | |
3293 | unsigned cur; | |
3294 | struct mlx4_ib_cq *cq; | |
3295 | ||
3296 | cur = wq->head - wq->tail; | |
0e6e7416 | 3297 | if (likely(cur + nreq < wq->max_post)) |
225c7b1f RD |
3298 | return 0; |
3299 | ||
3300 | cq = to_mcq(ib_cq); | |
3301 | spin_lock(&cq->lock); | |
3302 | cur = wq->head - wq->tail; | |
3303 | spin_unlock(&cq->lock); | |
3304 | ||
0e6e7416 | 3305 | return cur + nreq >= wq->max_post; |
225c7b1f RD |
3306 | } |
3307 | ||
95d04f07 RD |
3308 | static __be32 convert_access(int acc) |
3309 | { | |
6ff63e19 SM |
3310 | return (acc & IB_ACCESS_REMOTE_ATOMIC ? |
3311 | cpu_to_be32(MLX4_WQE_FMR_AND_BIND_PERM_ATOMIC) : 0) | | |
3312 | (acc & IB_ACCESS_REMOTE_WRITE ? | |
3313 | cpu_to_be32(MLX4_WQE_FMR_AND_BIND_PERM_REMOTE_WRITE) : 0) | | |
3314 | (acc & IB_ACCESS_REMOTE_READ ? | |
3315 | cpu_to_be32(MLX4_WQE_FMR_AND_BIND_PERM_REMOTE_READ) : 0) | | |
95d04f07 RD |
3316 | (acc & IB_ACCESS_LOCAL_WRITE ? cpu_to_be32(MLX4_WQE_FMR_PERM_LOCAL_WRITE) : 0) | |
3317 | cpu_to_be32(MLX4_WQE_FMR_PERM_LOCAL_READ); | |
3318 | } | |
3319 | ||
1b2cd0fc | 3320 | static void set_reg_seg(struct mlx4_wqe_fmr_seg *fseg, |
f696bf6d | 3321 | const struct ib_reg_wr *wr) |
1b2cd0fc SG |
3322 | { |
3323 | struct mlx4_ib_mr *mr = to_mmr(wr->mr); | |
3324 | ||
3325 | fseg->flags = convert_access(wr->access); | |
3326 | fseg->mem_key = cpu_to_be32(wr->key); | |
3327 | fseg->buf_list = cpu_to_be64(mr->page_map); | |
3328 | fseg->start_addr = cpu_to_be64(mr->ibmr.iova); | |
3329 | fseg->reg_len = cpu_to_be64(mr->ibmr.length); | |
3330 | fseg->offset = 0; /* XXX -- is this just for ZBVA? */ | |
3331 | fseg->page_size = cpu_to_be32(ilog2(mr->ibmr.page_size)); | |
3332 | fseg->reserved[0] = 0; | |
3333 | fseg->reserved[1] = 0; | |
3334 | } | |
3335 | ||
95d04f07 RD |
3336 | static void set_local_inv_seg(struct mlx4_wqe_local_inval_seg *iseg, u32 rkey) |
3337 | { | |
aee38fad SM |
3338 | memset(iseg, 0, sizeof(*iseg)); |
3339 | iseg->mem_key = cpu_to_be32(rkey); | |
95d04f07 RD |
3340 | } |
3341 | ||
0fbfa6a9 RD |
3342 | static __always_inline void set_raddr_seg(struct mlx4_wqe_raddr_seg *rseg, |
3343 | u64 remote_addr, u32 rkey) | |
3344 | { | |
3345 | rseg->raddr = cpu_to_be64(remote_addr); | |
3346 | rseg->rkey = cpu_to_be32(rkey); | |
3347 | rseg->reserved = 0; | |
3348 | } | |
3349 | ||
e622f2f4 | 3350 | static void set_atomic_seg(struct mlx4_wqe_atomic_seg *aseg, |
f696bf6d | 3351 | const struct ib_atomic_wr *wr) |
0fbfa6a9 | 3352 | { |
e622f2f4 CH |
3353 | if (wr->wr.opcode == IB_WR_ATOMIC_CMP_AND_SWP) { |
3354 | aseg->swap_add = cpu_to_be64(wr->swap); | |
3355 | aseg->compare = cpu_to_be64(wr->compare_add); | |
3356 | } else if (wr->wr.opcode == IB_WR_MASKED_ATOMIC_FETCH_AND_ADD) { | |
3357 | aseg->swap_add = cpu_to_be64(wr->compare_add); | |
3358 | aseg->compare = cpu_to_be64(wr->compare_add_mask); | |
0fbfa6a9 | 3359 | } else { |
e622f2f4 | 3360 | aseg->swap_add = cpu_to_be64(wr->compare_add); |
0fbfa6a9 RD |
3361 | aseg->compare = 0; |
3362 | } | |
3363 | ||
3364 | } | |
3365 | ||
6fa8f719 | 3366 | static void set_masked_atomic_seg(struct mlx4_wqe_masked_atomic_seg *aseg, |
f696bf6d | 3367 | const struct ib_atomic_wr *wr) |
6fa8f719 | 3368 | { |
e622f2f4 CH |
3369 | aseg->swap_add = cpu_to_be64(wr->swap); |
3370 | aseg->swap_add_mask = cpu_to_be64(wr->swap_mask); | |
3371 | aseg->compare = cpu_to_be64(wr->compare_add); | |
3372 | aseg->compare_mask = cpu_to_be64(wr->compare_add_mask); | |
6fa8f719 VS |
3373 | } |
3374 | ||
0fbfa6a9 | 3375 | static void set_datagram_seg(struct mlx4_wqe_datagram_seg *dseg, |
f696bf6d | 3376 | const struct ib_ud_wr *wr) |
0fbfa6a9 | 3377 | { |
e622f2f4 CH |
3378 | memcpy(dseg->av, &to_mah(wr->ah)->av, sizeof (struct mlx4_av)); |
3379 | dseg->dqpn = cpu_to_be32(wr->remote_qpn); | |
3380 | dseg->qkey = cpu_to_be32(wr->remote_qkey); | |
3381 | dseg->vlan = to_mah(wr->ah)->av.eth.vlan; | |
3382 | memcpy(dseg->mac, to_mah(wr->ah)->av.eth.mac, 6); | |
0fbfa6a9 RD |
3383 | } |
3384 | ||
1ffeb2eb JM |
3385 | static void set_tunnel_datagram_seg(struct mlx4_ib_dev *dev, |
3386 | struct mlx4_wqe_datagram_seg *dseg, | |
f696bf6d | 3387 | const struct ib_ud_wr *wr, |
97982f5a | 3388 | enum mlx4_ib_qp_type qpt) |
1ffeb2eb | 3389 | { |
e622f2f4 | 3390 | union mlx4_ext_av *av = &to_mah(wr->ah)->av; |
1ffeb2eb JM |
3391 | struct mlx4_av sqp_av = {0}; |
3392 | int port = *((u8 *) &av->ib.port_pd) & 0x3; | |
3393 | ||
3394 | /* force loopback */ | |
3395 | sqp_av.port_pd = av->ib.port_pd | cpu_to_be32(0x80000000); | |
3396 | sqp_av.g_slid = av->ib.g_slid & 0x7f; /* no GRH */ | |
3397 | sqp_av.sl_tclass_flowlabel = av->ib.sl_tclass_flowlabel & | |
3398 | cpu_to_be32(0xf0000000); | |
3399 | ||
3400 | memcpy(dseg->av, &sqp_av, sizeof (struct mlx4_av)); | |
97982f5a | 3401 | if (qpt == MLX4_IB_QPT_PROXY_GSI) |
c73c8b1e | 3402 | dseg->dqpn = cpu_to_be32(dev->dev->caps.spec_qps[port - 1].qp1_tunnel); |
97982f5a | 3403 | else |
c73c8b1e | 3404 | dseg->dqpn = cpu_to_be32(dev->dev->caps.spec_qps[port - 1].qp0_tunnel); |
47605df9 JM |
3405 | /* Use QKEY from the QP context, which is set by master */ |
3406 | dseg->qkey = cpu_to_be32(IB_QP_SET_QKEY); | |
1ffeb2eb JM |
3407 | } |
3408 | ||
f696bf6d BVA |
3409 | static void build_tunnel_header(const struct ib_ud_wr *wr, void *wqe, |
3410 | unsigned *mlx_seg_len) | |
1ffeb2eb JM |
3411 | { |
3412 | struct mlx4_wqe_inline_seg *inl = wqe; | |
3413 | struct mlx4_ib_tunnel_header hdr; | |
e622f2f4 | 3414 | struct mlx4_ib_ah *ah = to_mah(wr->ah); |
1ffeb2eb JM |
3415 | int spc; |
3416 | int i; | |
3417 | ||
3418 | memcpy(&hdr.av, &ah->av, sizeof hdr.av); | |
e622f2f4 CH |
3419 | hdr.remote_qpn = cpu_to_be32(wr->remote_qpn); |
3420 | hdr.pkey_index = cpu_to_be16(wr->pkey_index); | |
3421 | hdr.qkey = cpu_to_be32(wr->remote_qkey); | |
5ea8bbfc JM |
3422 | memcpy(hdr.mac, ah->av.eth.mac, 6); |
3423 | hdr.vlan = ah->av.eth.vlan; | |
1ffeb2eb JM |
3424 | |
3425 | spc = MLX4_INLINE_ALIGN - | |
3426 | ((unsigned long) (inl + 1) & (MLX4_INLINE_ALIGN - 1)); | |
3427 | if (sizeof (hdr) <= spc) { | |
3428 | memcpy(inl + 1, &hdr, sizeof (hdr)); | |
3429 | wmb(); | |
3430 | inl->byte_count = cpu_to_be32(1 << 31 | sizeof (hdr)); | |
3431 | i = 1; | |
3432 | } else { | |
3433 | memcpy(inl + 1, &hdr, spc); | |
3434 | wmb(); | |
3435 | inl->byte_count = cpu_to_be32(1 << 31 | spc); | |
3436 | ||
3437 | inl = (void *) (inl + 1) + spc; | |
3438 | memcpy(inl + 1, (void *) &hdr + spc, sizeof (hdr) - spc); | |
3439 | wmb(); | |
3440 | inl->byte_count = cpu_to_be32(1 << 31 | (sizeof (hdr) - spc)); | |
3441 | i = 2; | |
3442 | } | |
3443 | ||
3444 | *mlx_seg_len = | |
3445 | ALIGN(i * sizeof (struct mlx4_wqe_inline_seg) + sizeof (hdr), 16); | |
3446 | } | |
3447 | ||
6e694ea3 JM |
3448 | static void set_mlx_icrc_seg(void *dseg) |
3449 | { | |
3450 | u32 *t = dseg; | |
3451 | struct mlx4_wqe_inline_seg *iseg = dseg; | |
3452 | ||
3453 | t[1] = 0; | |
3454 | ||
3455 | /* | |
3456 | * Need a barrier here before writing the byte_count field to | |
3457 | * make sure that all the data is visible before the | |
3458 | * byte_count field is set. Otherwise, if the segment begins | |
3459 | * a new cacheline, the HCA prefetcher could grab the 64-byte | |
3460 | * chunk and get a valid (!= * 0xffffffff) byte count but | |
3461 | * stale data, and end up sending the wrong data. | |
3462 | */ | |
3463 | wmb(); | |
3464 | ||
3465 | iseg->byte_count = cpu_to_be32((1 << 31) | 4); | |
3466 | } | |
3467 | ||
3468 | static void set_data_seg(struct mlx4_wqe_data_seg *dseg, struct ib_sge *sg) | |
d420d9e3 | 3469 | { |
d420d9e3 RD |
3470 | dseg->lkey = cpu_to_be32(sg->lkey); |
3471 | dseg->addr = cpu_to_be64(sg->addr); | |
6e694ea3 JM |
3472 | |
3473 | /* | |
3474 | * Need a barrier here before writing the byte_count field to | |
3475 | * make sure that all the data is visible before the | |
3476 | * byte_count field is set. Otherwise, if the segment begins | |
3477 | * a new cacheline, the HCA prefetcher could grab the 64-byte | |
3478 | * chunk and get a valid (!= * 0xffffffff) byte count but | |
3479 | * stale data, and end up sending the wrong data. | |
3480 | */ | |
3481 | wmb(); | |
3482 | ||
3483 | dseg->byte_count = cpu_to_be32(sg->length); | |
d420d9e3 RD |
3484 | } |
3485 | ||
2242fa4f RD |
3486 | static void __set_data_seg(struct mlx4_wqe_data_seg *dseg, struct ib_sge *sg) |
3487 | { | |
3488 | dseg->byte_count = cpu_to_be32(sg->length); | |
3489 | dseg->lkey = cpu_to_be32(sg->lkey); | |
3490 | dseg->addr = cpu_to_be64(sg->addr); | |
3491 | } | |
3492 | ||
f696bf6d BVA |
3493 | static int build_lso_seg(struct mlx4_wqe_lso_seg *wqe, |
3494 | const struct ib_ud_wr *wr, struct mlx4_ib_qp *qp, | |
3495 | unsigned *lso_seg_len, __be32 *lso_hdr_sz, __be32 *blh) | |
b832be1e | 3496 | { |
e622f2f4 | 3497 | unsigned halign = ALIGN(sizeof *wqe + wr->hlen, 16); |
b832be1e | 3498 | |
417608c2 EC |
3499 | if (unlikely(halign > MLX4_IB_CACHE_LINE_SIZE)) |
3500 | *blh = cpu_to_be32(1 << 6); | |
b832be1e EC |
3501 | |
3502 | if (unlikely(!(qp->flags & MLX4_IB_QP_LSO) && | |
e622f2f4 | 3503 | wr->wr.num_sge > qp->sq.max_gs - (halign >> 4))) |
b832be1e EC |
3504 | return -EINVAL; |
3505 | ||
e622f2f4 | 3506 | memcpy(wqe->header, wr->header, wr->hlen); |
b832be1e | 3507 | |
e622f2f4 | 3508 | *lso_hdr_sz = cpu_to_be32(wr->mss << 16 | wr->hlen); |
b832be1e EC |
3509 | *lso_seg_len = halign; |
3510 | return 0; | |
3511 | } | |
3512 | ||
f696bf6d | 3513 | static __be32 send_ieth(const struct ib_send_wr *wr) |
95d04f07 RD |
3514 | { |
3515 | switch (wr->opcode) { | |
3516 | case IB_WR_SEND_WITH_IMM: | |
3517 | case IB_WR_RDMA_WRITE_WITH_IMM: | |
3518 | return wr->ex.imm_data; | |
3519 | ||
3520 | case IB_WR_SEND_WITH_INV: | |
3521 | return cpu_to_be32(wr->ex.invalidate_rkey); | |
3522 | ||
3523 | default: | |
3524 | return 0; | |
3525 | } | |
3526 | } | |
3527 | ||
1ffeb2eb JM |
3528 | static void add_zero_len_inline(void *wqe) |
3529 | { | |
3530 | struct mlx4_wqe_inline_seg *inl = wqe; | |
3531 | memset(wqe, 0, 16); | |
3532 | inl->byte_count = cpu_to_be32(1 << 31); | |
3533 | } | |
3534 | ||
d34ac5cd BVA |
3535 | static int _mlx4_ib_post_send(struct ib_qp *ibqp, const struct ib_send_wr *wr, |
3536 | const struct ib_send_wr **bad_wr, bool drain) | |
225c7b1f RD |
3537 | { |
3538 | struct mlx4_ib_qp *qp = to_mqp(ibqp); | |
3539 | void *wqe; | |
3540 | struct mlx4_wqe_ctrl_seg *ctrl; | |
6e694ea3 | 3541 | struct mlx4_wqe_data_seg *dseg; |
225c7b1f RD |
3542 | unsigned long flags; |
3543 | int nreq; | |
3544 | int err = 0; | |
ea54b10c | 3545 | unsigned ind; |
ea54b10c | 3546 | int uninitialized_var(size); |
a3d8e159 | 3547 | unsigned uninitialized_var(seglen); |
0fd7e1d8 RD |
3548 | __be32 dummy; |
3549 | __be32 *lso_wqe; | |
3550 | __be32 uninitialized_var(lso_hdr_sz); | |
417608c2 | 3551 | __be32 blh; |
225c7b1f | 3552 | int i; |
35f05dab | 3553 | struct mlx4_ib_dev *mdev = to_mdev(ibqp->device); |
225c7b1f | 3554 | |
e1b866c6 MS |
3555 | if (qp->mlx4_ib_qp_type == MLX4_IB_QPT_GSI) { |
3556 | struct mlx4_ib_sqp *sqp = to_msqp(qp); | |
3557 | ||
3558 | if (sqp->roce_v2_gsi) { | |
3559 | struct mlx4_ib_ah *ah = to_mah(ud_wr(wr)->ah); | |
a748d60d | 3560 | enum ib_gid_type gid_type; |
e1b866c6 MS |
3561 | union ib_gid gid; |
3562 | ||
a748d60d TB |
3563 | if (!fill_gid_by_hw_index(mdev, sqp->qp.port, |
3564 | ah->av.ib.gid_index, | |
3565 | &gid, &gid_type)) | |
3566 | qp = (gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP) ? | |
3567 | to_mqp(sqp->roce_v2_gsi) : qp; | |
3568 | else | |
e1b866c6 MS |
3569 | pr_err("Failed to get gid at index %d. RoCEv2 will not work properly\n", |
3570 | ah->av.ib.gid_index); | |
e1b866c6 MS |
3571 | } |
3572 | } | |
3573 | ||
96db0e03 | 3574 | spin_lock_irqsave(&qp->sq.lock, flags); |
1975acd9 YH |
3575 | if (mdev->dev->persist->state & MLX4_DEVICE_STATE_INTERNAL_ERROR && |
3576 | !drain) { | |
35f05dab YH |
3577 | err = -EIO; |
3578 | *bad_wr = wr; | |
3579 | nreq = 0; | |
3580 | goto out; | |
3581 | } | |
225c7b1f | 3582 | |
ea54b10c | 3583 | ind = qp->sq_next_wqe; |
225c7b1f RD |
3584 | |
3585 | for (nreq = 0; wr; ++nreq, wr = wr->next) { | |
0fd7e1d8 | 3586 | lso_wqe = &dummy; |
417608c2 | 3587 | blh = 0; |
0fd7e1d8 | 3588 | |
225c7b1f RD |
3589 | if (mlx4_wq_overflow(&qp->sq, nreq, qp->ibqp.send_cq)) { |
3590 | err = -ENOMEM; | |
3591 | *bad_wr = wr; | |
3592 | goto out; | |
3593 | } | |
3594 | ||
3595 | if (unlikely(wr->num_sge > qp->sq.max_gs)) { | |
3596 | err = -EINVAL; | |
3597 | *bad_wr = wr; | |
3598 | goto out; | |
3599 | } | |
3600 | ||
0e6e7416 | 3601 | ctrl = wqe = get_send_wqe(qp, ind & (qp->sq.wqe_cnt - 1)); |
ea54b10c | 3602 | qp->sq.wrid[(qp->sq.head + nreq) & (qp->sq.wqe_cnt - 1)] = wr->wr_id; |
225c7b1f RD |
3603 | |
3604 | ctrl->srcrb_flags = | |
3605 | (wr->send_flags & IB_SEND_SIGNALED ? | |
3606 | cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE) : 0) | | |
3607 | (wr->send_flags & IB_SEND_SOLICITED ? | |
3608 | cpu_to_be32(MLX4_WQE_CTRL_SOLICITED) : 0) | | |
8ff095ec EC |
3609 | ((wr->send_flags & IB_SEND_IP_CSUM) ? |
3610 | cpu_to_be32(MLX4_WQE_CTRL_IP_CSUM | | |
3611 | MLX4_WQE_CTRL_TCP_UDP_CSUM) : 0) | | |
225c7b1f RD |
3612 | qp->sq_signal_bits; |
3613 | ||
95d04f07 | 3614 | ctrl->imm = send_ieth(wr); |
225c7b1f RD |
3615 | |
3616 | wqe += sizeof *ctrl; | |
3617 | size = sizeof *ctrl / 16; | |
3618 | ||
1ffeb2eb JM |
3619 | switch (qp->mlx4_ib_qp_type) { |
3620 | case MLX4_IB_QPT_RC: | |
3621 | case MLX4_IB_QPT_UC: | |
225c7b1f RD |
3622 | switch (wr->opcode) { |
3623 | case IB_WR_ATOMIC_CMP_AND_SWP: | |
3624 | case IB_WR_ATOMIC_FETCH_AND_ADD: | |
6fa8f719 | 3625 | case IB_WR_MASKED_ATOMIC_FETCH_AND_ADD: |
e622f2f4 CH |
3626 | set_raddr_seg(wqe, atomic_wr(wr)->remote_addr, |
3627 | atomic_wr(wr)->rkey); | |
225c7b1f RD |
3628 | wqe += sizeof (struct mlx4_wqe_raddr_seg); |
3629 | ||
e622f2f4 | 3630 | set_atomic_seg(wqe, atomic_wr(wr)); |
225c7b1f | 3631 | wqe += sizeof (struct mlx4_wqe_atomic_seg); |
0fbfa6a9 | 3632 | |
225c7b1f RD |
3633 | size += (sizeof (struct mlx4_wqe_raddr_seg) + |
3634 | sizeof (struct mlx4_wqe_atomic_seg)) / 16; | |
6fa8f719 VS |
3635 | |
3636 | break; | |
3637 | ||
3638 | case IB_WR_MASKED_ATOMIC_CMP_AND_SWP: | |
e622f2f4 CH |
3639 | set_raddr_seg(wqe, atomic_wr(wr)->remote_addr, |
3640 | atomic_wr(wr)->rkey); | |
6fa8f719 VS |
3641 | wqe += sizeof (struct mlx4_wqe_raddr_seg); |
3642 | ||
e622f2f4 | 3643 | set_masked_atomic_seg(wqe, atomic_wr(wr)); |
6fa8f719 VS |
3644 | wqe += sizeof (struct mlx4_wqe_masked_atomic_seg); |
3645 | ||
3646 | size += (sizeof (struct mlx4_wqe_raddr_seg) + | |
3647 | sizeof (struct mlx4_wqe_masked_atomic_seg)) / 16; | |
225c7b1f RD |
3648 | |
3649 | break; | |
3650 | ||
3651 | case IB_WR_RDMA_READ: | |
3652 | case IB_WR_RDMA_WRITE: | |
3653 | case IB_WR_RDMA_WRITE_WITH_IMM: | |
e622f2f4 CH |
3654 | set_raddr_seg(wqe, rdma_wr(wr)->remote_addr, |
3655 | rdma_wr(wr)->rkey); | |
225c7b1f RD |
3656 | wqe += sizeof (struct mlx4_wqe_raddr_seg); |
3657 | size += sizeof (struct mlx4_wqe_raddr_seg) / 16; | |
225c7b1f | 3658 | break; |
95d04f07 RD |
3659 | |
3660 | case IB_WR_LOCAL_INV: | |
2ac6bf4d JM |
3661 | ctrl->srcrb_flags |= |
3662 | cpu_to_be32(MLX4_WQE_CTRL_STRONG_ORDER); | |
95d04f07 RD |
3663 | set_local_inv_seg(wqe, wr->ex.invalidate_rkey); |
3664 | wqe += sizeof (struct mlx4_wqe_local_inval_seg); | |
3665 | size += sizeof (struct mlx4_wqe_local_inval_seg) / 16; | |
3666 | break; | |
3667 | ||
1b2cd0fc SG |
3668 | case IB_WR_REG_MR: |
3669 | ctrl->srcrb_flags |= | |
3670 | cpu_to_be32(MLX4_WQE_CTRL_STRONG_ORDER); | |
3671 | set_reg_seg(wqe, reg_wr(wr)); | |
3672 | wqe += sizeof(struct mlx4_wqe_fmr_seg); | |
3673 | size += sizeof(struct mlx4_wqe_fmr_seg) / 16; | |
3674 | break; | |
3675 | ||
225c7b1f RD |
3676 | default: |
3677 | /* No extra segments required for sends */ | |
3678 | break; | |
3679 | } | |
3680 | break; | |
3681 | ||
1ffeb2eb | 3682 | case MLX4_IB_QPT_TUN_SMI_OWNER: |
e622f2f4 CH |
3683 | err = build_sriov_qp0_header(to_msqp(qp), ud_wr(wr), |
3684 | ctrl, &seglen); | |
1ffeb2eb JM |
3685 | if (unlikely(err)) { |
3686 | *bad_wr = wr; | |
3687 | goto out; | |
3688 | } | |
3689 | wqe += seglen; | |
3690 | size += seglen / 16; | |
3691 | break; | |
3692 | case MLX4_IB_QPT_TUN_SMI: | |
3693 | case MLX4_IB_QPT_TUN_GSI: | |
3694 | /* this is a UD qp used in MAD responses to slaves. */ | |
e622f2f4 | 3695 | set_datagram_seg(wqe, ud_wr(wr)); |
1ffeb2eb JM |
3696 | /* set the forced-loopback bit in the data seg av */ |
3697 | *(__be32 *) wqe |= cpu_to_be32(0x80000000); | |
3698 | wqe += sizeof (struct mlx4_wqe_datagram_seg); | |
3699 | size += sizeof (struct mlx4_wqe_datagram_seg) / 16; | |
3700 | break; | |
3701 | case MLX4_IB_QPT_UD: | |
e622f2f4 | 3702 | set_datagram_seg(wqe, ud_wr(wr)); |
225c7b1f RD |
3703 | wqe += sizeof (struct mlx4_wqe_datagram_seg); |
3704 | size += sizeof (struct mlx4_wqe_datagram_seg) / 16; | |
b832be1e EC |
3705 | |
3706 | if (wr->opcode == IB_WR_LSO) { | |
e622f2f4 CH |
3707 | err = build_lso_seg(wqe, ud_wr(wr), qp, &seglen, |
3708 | &lso_hdr_sz, &blh); | |
b832be1e EC |
3709 | if (unlikely(err)) { |
3710 | *bad_wr = wr; | |
3711 | goto out; | |
3712 | } | |
0fd7e1d8 | 3713 | lso_wqe = (__be32 *) wqe; |
b832be1e EC |
3714 | wqe += seglen; |
3715 | size += seglen / 16; | |
3716 | } | |
225c7b1f RD |
3717 | break; |
3718 | ||
1ffeb2eb | 3719 | case MLX4_IB_QPT_PROXY_SMI_OWNER: |
e622f2f4 CH |
3720 | err = build_sriov_qp0_header(to_msqp(qp), ud_wr(wr), |
3721 | ctrl, &seglen); | |
1ffeb2eb JM |
3722 | if (unlikely(err)) { |
3723 | *bad_wr = wr; | |
3724 | goto out; | |
3725 | } | |
3726 | wqe += seglen; | |
3727 | size += seglen / 16; | |
3728 | /* to start tunnel header on a cache-line boundary */ | |
3729 | add_zero_len_inline(wqe); | |
3730 | wqe += 16; | |
3731 | size++; | |
e622f2f4 | 3732 | build_tunnel_header(ud_wr(wr), wqe, &seglen); |
1ffeb2eb JM |
3733 | wqe += seglen; |
3734 | size += seglen / 16; | |
3735 | break; | |
3736 | case MLX4_IB_QPT_PROXY_SMI: | |
1ffeb2eb JM |
3737 | case MLX4_IB_QPT_PROXY_GSI: |
3738 | /* If we are tunneling special qps, this is a UD qp. | |
3739 | * In this case we first add a UD segment targeting | |
3740 | * the tunnel qp, and then add a header with address | |
3741 | * information */ | |
e622f2f4 CH |
3742 | set_tunnel_datagram_seg(to_mdev(ibqp->device), wqe, |
3743 | ud_wr(wr), | |
97982f5a | 3744 | qp->mlx4_ib_qp_type); |
1ffeb2eb JM |
3745 | wqe += sizeof (struct mlx4_wqe_datagram_seg); |
3746 | size += sizeof (struct mlx4_wqe_datagram_seg) / 16; | |
e622f2f4 | 3747 | build_tunnel_header(ud_wr(wr), wqe, &seglen); |
1ffeb2eb JM |
3748 | wqe += seglen; |
3749 | size += seglen / 16; | |
3750 | break; | |
3751 | ||
3752 | case MLX4_IB_QPT_SMI: | |
3753 | case MLX4_IB_QPT_GSI: | |
e622f2f4 CH |
3754 | err = build_mlx_header(to_msqp(qp), ud_wr(wr), ctrl, |
3755 | &seglen); | |
f438000f | 3756 | if (unlikely(err)) { |
225c7b1f RD |
3757 | *bad_wr = wr; |
3758 | goto out; | |
3759 | } | |
f438000f RD |
3760 | wqe += seglen; |
3761 | size += seglen / 16; | |
225c7b1f RD |
3762 | break; |
3763 | ||
3764 | default: | |
3765 | break; | |
3766 | } | |
3767 | ||
6e694ea3 JM |
3768 | /* |
3769 | * Write data segments in reverse order, so as to | |
3770 | * overwrite cacheline stamp last within each | |
3771 | * cacheline. This avoids issues with WQE | |
3772 | * prefetching. | |
3773 | */ | |
225c7b1f | 3774 | |
6e694ea3 JM |
3775 | dseg = wqe; |
3776 | dseg += wr->num_sge - 1; | |
3777 | size += wr->num_sge * (sizeof (struct mlx4_wqe_data_seg) / 16); | |
225c7b1f RD |
3778 | |
3779 | /* Add one more inline data segment for ICRC for MLX sends */ | |
1ffeb2eb JM |
3780 | if (unlikely(qp->mlx4_ib_qp_type == MLX4_IB_QPT_SMI || |
3781 | qp->mlx4_ib_qp_type == MLX4_IB_QPT_GSI || | |
3782 | qp->mlx4_ib_qp_type & | |
3783 | (MLX4_IB_QPT_PROXY_SMI_OWNER | MLX4_IB_QPT_TUN_SMI_OWNER))) { | |
6e694ea3 | 3784 | set_mlx_icrc_seg(dseg + 1); |
225c7b1f RD |
3785 | size += sizeof (struct mlx4_wqe_data_seg) / 16; |
3786 | } | |
3787 | ||
6e694ea3 JM |
3788 | for (i = wr->num_sge - 1; i >= 0; --i, --dseg) |
3789 | set_data_seg(dseg, wr->sg_list + i); | |
3790 | ||
0fd7e1d8 RD |
3791 | /* |
3792 | * Possibly overwrite stamping in cacheline with LSO | |
3793 | * segment only after making sure all data segments | |
3794 | * are written. | |
3795 | */ | |
3796 | wmb(); | |
3797 | *lso_wqe = lso_hdr_sz; | |
3798 | ||
224e92e0 BB |
3799 | ctrl->qpn_vlan.fence_size = (wr->send_flags & IB_SEND_FENCE ? |
3800 | MLX4_WQE_CTRL_FENCE : 0) | size; | |
225c7b1f RD |
3801 | |
3802 | /* | |
3803 | * Make sure descriptor is fully written before | |
3804 | * setting ownership bit (because HW can start | |
3805 | * executing as soon as we do). | |
3806 | */ | |
3807 | wmb(); | |
3808 | ||
59b0ed12 | 3809 | if (wr->opcode < 0 || wr->opcode >= ARRAY_SIZE(mlx4_ib_opcode)) { |
4ba6b8ea | 3810 | *bad_wr = wr; |
225c7b1f RD |
3811 | err = -EINVAL; |
3812 | goto out; | |
3813 | } | |
3814 | ||
3815 | ctrl->owner_opcode = mlx4_ib_opcode[wr->opcode] | | |
417608c2 | 3816 | (ind & qp->sq.wqe_cnt ? cpu_to_be32(1 << 31) : 0) | blh; |
0e6e7416 RD |
3817 | |
3818 | /* | |
3819 | * We can improve latency by not stamping the last | |
3820 | * send queue WQE until after ringing the doorbell, so | |
3821 | * only stamp here if there are still more WQEs to post. | |
3822 | */ | |
f95ccffc JM |
3823 | if (wr->next) |
3824 | stamp_send_wqe(qp, ind + qp->sq_spare_wqes); | |
3825 | ind++; | |
225c7b1f RD |
3826 | } |
3827 | ||
3828 | out: | |
3829 | if (likely(nreq)) { | |
3830 | qp->sq.head += nreq; | |
3831 | ||
3832 | /* | |
3833 | * Make sure that descriptors are written before | |
3834 | * doorbell record. | |
3835 | */ | |
3836 | wmb(); | |
3837 | ||
97d82a48 SK |
3838 | writel_relaxed(qp->doorbell_qpn, |
3839 | to_mdev(ibqp->device)->uar_map + MLX4_SEND_DOORBELL); | |
225c7b1f | 3840 | |
f95ccffc | 3841 | stamp_send_wqe(qp, ind + qp->sq_spare_wqes - 1); |
ea54b10c | 3842 | |
ea54b10c | 3843 | qp->sq_next_wqe = ind; |
225c7b1f RD |
3844 | } |
3845 | ||
96db0e03 | 3846 | spin_unlock_irqrestore(&qp->sq.lock, flags); |
225c7b1f RD |
3847 | |
3848 | return err; | |
3849 | } | |
3850 | ||
d34ac5cd BVA |
3851 | int mlx4_ib_post_send(struct ib_qp *ibqp, const struct ib_send_wr *wr, |
3852 | const struct ib_send_wr **bad_wr) | |
1975acd9 YH |
3853 | { |
3854 | return _mlx4_ib_post_send(ibqp, wr, bad_wr, false); | |
3855 | } | |
3856 | ||
d34ac5cd BVA |
3857 | static int _mlx4_ib_post_recv(struct ib_qp *ibqp, const struct ib_recv_wr *wr, |
3858 | const struct ib_recv_wr **bad_wr, bool drain) | |
225c7b1f RD |
3859 | { |
3860 | struct mlx4_ib_qp *qp = to_mqp(ibqp); | |
3861 | struct mlx4_wqe_data_seg *scat; | |
3862 | unsigned long flags; | |
3863 | int err = 0; | |
3864 | int nreq; | |
3865 | int ind; | |
1ffeb2eb | 3866 | int max_gs; |
225c7b1f | 3867 | int i; |
35f05dab | 3868 | struct mlx4_ib_dev *mdev = to_mdev(ibqp->device); |
225c7b1f | 3869 | |
1ffeb2eb | 3870 | max_gs = qp->rq.max_gs; |
225c7b1f RD |
3871 | spin_lock_irqsave(&qp->rq.lock, flags); |
3872 | ||
1975acd9 YH |
3873 | if (mdev->dev->persist->state & MLX4_DEVICE_STATE_INTERNAL_ERROR && |
3874 | !drain) { | |
35f05dab YH |
3875 | err = -EIO; |
3876 | *bad_wr = wr; | |
3877 | nreq = 0; | |
3878 | goto out; | |
3879 | } | |
3880 | ||
0e6e7416 | 3881 | ind = qp->rq.head & (qp->rq.wqe_cnt - 1); |
225c7b1f RD |
3882 | |
3883 | for (nreq = 0; wr; ++nreq, wr = wr->next) { | |
2b946077 | 3884 | if (mlx4_wq_overflow(&qp->rq, nreq, qp->ibqp.recv_cq)) { |
225c7b1f RD |
3885 | err = -ENOMEM; |
3886 | *bad_wr = wr; | |
3887 | goto out; | |
3888 | } | |
3889 | ||
3890 | if (unlikely(wr->num_sge > qp->rq.max_gs)) { | |
3891 | err = -EINVAL; | |
3892 | *bad_wr = wr; | |
3893 | goto out; | |
3894 | } | |
3895 | ||
3896 | scat = get_recv_wqe(qp, ind); | |
3897 | ||
1ffeb2eb JM |
3898 | if (qp->mlx4_ib_qp_type & (MLX4_IB_QPT_PROXY_SMI_OWNER | |
3899 | MLX4_IB_QPT_PROXY_SMI | MLX4_IB_QPT_PROXY_GSI)) { | |
3900 | ib_dma_sync_single_for_device(ibqp->device, | |
3901 | qp->sqp_proxy_rcv[ind].map, | |
3902 | sizeof (struct mlx4_ib_proxy_sqp_hdr), | |
3903 | DMA_FROM_DEVICE); | |
3904 | scat->byte_count = | |
3905 | cpu_to_be32(sizeof (struct mlx4_ib_proxy_sqp_hdr)); | |
3906 | /* use dma lkey from upper layer entry */ | |
3907 | scat->lkey = cpu_to_be32(wr->sg_list->lkey); | |
3908 | scat->addr = cpu_to_be64(qp->sqp_proxy_rcv[ind].map); | |
3909 | scat++; | |
3910 | max_gs--; | |
3911 | } | |
3912 | ||
2242fa4f RD |
3913 | for (i = 0; i < wr->num_sge; ++i) |
3914 | __set_data_seg(scat + i, wr->sg_list + i); | |
225c7b1f | 3915 | |
1ffeb2eb | 3916 | if (i < max_gs) { |
225c7b1f RD |
3917 | scat[i].byte_count = 0; |
3918 | scat[i].lkey = cpu_to_be32(MLX4_INVALID_LKEY); | |
3919 | scat[i].addr = 0; | |
3920 | } | |
3921 | ||
3922 | qp->rq.wrid[ind] = wr->wr_id; | |
3923 | ||
0e6e7416 | 3924 | ind = (ind + 1) & (qp->rq.wqe_cnt - 1); |
225c7b1f RD |
3925 | } |
3926 | ||
3927 | out: | |
3928 | if (likely(nreq)) { | |
3929 | qp->rq.head += nreq; | |
3930 | ||
3931 | /* | |
3932 | * Make sure that descriptors are written before | |
3933 | * doorbell record. | |
3934 | */ | |
3935 | wmb(); | |
3936 | ||
3937 | *qp->db.db = cpu_to_be32(qp->rq.head & 0xffff); | |
3938 | } | |
3939 | ||
3940 | spin_unlock_irqrestore(&qp->rq.lock, flags); | |
3941 | ||
3942 | return err; | |
3943 | } | |
6a775e2b | 3944 | |
d34ac5cd BVA |
3945 | int mlx4_ib_post_recv(struct ib_qp *ibqp, const struct ib_recv_wr *wr, |
3946 | const struct ib_recv_wr **bad_wr) | |
1975acd9 YH |
3947 | { |
3948 | return _mlx4_ib_post_recv(ibqp, wr, bad_wr, false); | |
3949 | } | |
3950 | ||
6a775e2b JM |
3951 | static inline enum ib_qp_state to_ib_qp_state(enum mlx4_qp_state mlx4_state) |
3952 | { | |
3953 | switch (mlx4_state) { | |
3954 | case MLX4_QP_STATE_RST: return IB_QPS_RESET; | |
3955 | case MLX4_QP_STATE_INIT: return IB_QPS_INIT; | |
3956 | case MLX4_QP_STATE_RTR: return IB_QPS_RTR; | |
3957 | case MLX4_QP_STATE_RTS: return IB_QPS_RTS; | |
3958 | case MLX4_QP_STATE_SQ_DRAINING: | |
3959 | case MLX4_QP_STATE_SQD: return IB_QPS_SQD; | |
3960 | case MLX4_QP_STATE_SQER: return IB_QPS_SQE; | |
3961 | case MLX4_QP_STATE_ERR: return IB_QPS_ERR; | |
3962 | default: return -1; | |
3963 | } | |
3964 | } | |
3965 | ||
3966 | static inline enum ib_mig_state to_ib_mig_state(int mlx4_mig_state) | |
3967 | { | |
3968 | switch (mlx4_mig_state) { | |
3969 | case MLX4_QP_PM_ARMED: return IB_MIG_ARMED; | |
3970 | case MLX4_QP_PM_REARM: return IB_MIG_REARM; | |
3971 | case MLX4_QP_PM_MIGRATED: return IB_MIG_MIGRATED; | |
3972 | default: return -1; | |
3973 | } | |
3974 | } | |
3975 | ||
3976 | static int to_ib_qp_access_flags(int mlx4_flags) | |
3977 | { | |
3978 | int ib_flags = 0; | |
3979 | ||
3980 | if (mlx4_flags & MLX4_QP_BIT_RRE) | |
3981 | ib_flags |= IB_ACCESS_REMOTE_READ; | |
3982 | if (mlx4_flags & MLX4_QP_BIT_RWE) | |
3983 | ib_flags |= IB_ACCESS_REMOTE_WRITE; | |
3984 | if (mlx4_flags & MLX4_QP_BIT_RAE) | |
3985 | ib_flags |= IB_ACCESS_REMOTE_ATOMIC; | |
3986 | ||
3987 | return ib_flags; | |
3988 | } | |
3989 | ||
71d53ab4 | 3990 | static void to_rdma_ah_attr(struct mlx4_ib_dev *ibdev, |
d8966fcd | 3991 | struct rdma_ah_attr *ah_attr, |
71d53ab4 | 3992 | struct mlx4_qp_path *path) |
6a775e2b | 3993 | { |
4c3eb3ca | 3994 | struct mlx4_dev *dev = ibdev->dev; |
d8966fcd | 3995 | u8 port_num = path->sched_queue & 0x40 ? 2 : 1; |
4c3eb3ca | 3996 | |
d8966fcd | 3997 | memset(ah_attr, 0, sizeof(*ah_attr)); |
d8966fcd | 3998 | if (port_num == 0 || port_num > dev->caps.num_ports) |
6a775e2b | 3999 | return; |
f1228867 | 4000 | ah_attr->type = rdma_ah_find_type(&ibdev->ib_dev, port_num); |
6a775e2b | 4001 | |
44c58487 | 4002 | if (ah_attr->type == RDMA_AH_ATTR_TYPE_ROCE) |
d8966fcd DC |
4003 | rdma_ah_set_sl(ah_attr, ((path->sched_queue >> 3) & 0x7) | |
4004 | ((path->sched_queue & 4) << 1)); | |
4c3eb3ca | 4005 | else |
d8966fcd | 4006 | rdma_ah_set_sl(ah_attr, (path->sched_queue >> 2) & 0xf); |
44c58487 | 4007 | rdma_ah_set_port_num(ah_attr, port_num); |
4c3eb3ca | 4008 | |
d8966fcd DC |
4009 | rdma_ah_set_dlid(ah_attr, be16_to_cpu(path->rlid)); |
4010 | rdma_ah_set_path_bits(ah_attr, path->grh_mylmc & 0x7f); | |
4011 | rdma_ah_set_static_rate(ah_attr, | |
4012 | path->static_rate ? path->static_rate - 5 : 0); | |
4013 | if (path->grh_mylmc & (1 << 7)) { | |
4014 | rdma_ah_set_grh(ah_attr, NULL, | |
4015 | be32_to_cpu(path->tclass_flowlabel) & 0xfffff, | |
4016 | path->mgid_index, | |
4017 | path->hop_limit, | |
4018 | (be32_to_cpu(path->tclass_flowlabel) | |
4019 | >> 20) & 0xff); | |
4020 | rdma_ah_set_dgid_raw(ah_attr, path->rgid); | |
6a775e2b JM |
4021 | } |
4022 | } | |
4023 | ||
4024 | int mlx4_ib_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr, int qp_attr_mask, | |
4025 | struct ib_qp_init_attr *qp_init_attr) | |
4026 | { | |
4027 | struct mlx4_ib_dev *dev = to_mdev(ibqp->device); | |
4028 | struct mlx4_ib_qp *qp = to_mqp(ibqp); | |
4029 | struct mlx4_qp_context context; | |
4030 | int mlx4_state; | |
0df67030 DB |
4031 | int err = 0; |
4032 | ||
3078f5f1 GL |
4033 | if (ibqp->rwq_ind_tbl) |
4034 | return -EOPNOTSUPP; | |
4035 | ||
0df67030 | 4036 | mutex_lock(&qp->mutex); |
6a775e2b JM |
4037 | |
4038 | if (qp->state == IB_QPS_RESET) { | |
4039 | qp_attr->qp_state = IB_QPS_RESET; | |
4040 | goto done; | |
4041 | } | |
4042 | ||
4043 | err = mlx4_qp_query(dev->dev, &qp->mqp, &context); | |
0df67030 DB |
4044 | if (err) { |
4045 | err = -EINVAL; | |
4046 | goto out; | |
4047 | } | |
6a775e2b JM |
4048 | |
4049 | mlx4_state = be32_to_cpu(context.flags) >> 28; | |
4050 | ||
0df67030 DB |
4051 | qp->state = to_ib_qp_state(mlx4_state); |
4052 | qp_attr->qp_state = qp->state; | |
6a775e2b JM |
4053 | qp_attr->path_mtu = context.mtu_msgmax >> 5; |
4054 | qp_attr->path_mig_state = | |
4055 | to_ib_mig_state((be32_to_cpu(context.flags) >> 11) & 0x3); | |
4056 | qp_attr->qkey = be32_to_cpu(context.qkey); | |
4057 | qp_attr->rq_psn = be32_to_cpu(context.rnr_nextrecvpsn) & 0xffffff; | |
4058 | qp_attr->sq_psn = be32_to_cpu(context.next_send_psn) & 0xffffff; | |
4059 | qp_attr->dest_qp_num = be32_to_cpu(context.remote_qpn) & 0xffffff; | |
4060 | qp_attr->qp_access_flags = | |
4061 | to_ib_qp_access_flags(be32_to_cpu(context.params2)); | |
4062 | ||
4063 | if (qp->ibqp.qp_type == IB_QPT_RC || qp->ibqp.qp_type == IB_QPT_UC) { | |
71d53ab4 DC |
4064 | to_rdma_ah_attr(dev, &qp_attr->ah_attr, &context.pri_path); |
4065 | to_rdma_ah_attr(dev, &qp_attr->alt_ah_attr, &context.alt_path); | |
6a775e2b | 4066 | qp_attr->alt_pkey_index = context.alt_path.pkey_index & 0x7f; |
d8966fcd DC |
4067 | qp_attr->alt_port_num = |
4068 | rdma_ah_get_port_num(&qp_attr->alt_ah_attr); | |
6a775e2b JM |
4069 | } |
4070 | ||
4071 | qp_attr->pkey_index = context.pri_path.pkey_index & 0x7f; | |
1c27cb71 JM |
4072 | if (qp_attr->qp_state == IB_QPS_INIT) |
4073 | qp_attr->port_num = qp->port; | |
4074 | else | |
4075 | qp_attr->port_num = context.pri_path.sched_queue & 0x40 ? 2 : 1; | |
6a775e2b JM |
4076 | |
4077 | /* qp_attr->en_sqd_async_notify is only applicable in modify qp */ | |
4078 | qp_attr->sq_draining = mlx4_state == MLX4_QP_STATE_SQ_DRAINING; | |
4079 | ||
4080 | qp_attr->max_rd_atomic = 1 << ((be32_to_cpu(context.params1) >> 21) & 0x7); | |
4081 | ||
4082 | qp_attr->max_dest_rd_atomic = | |
4083 | 1 << ((be32_to_cpu(context.params2) >> 21) & 0x7); | |
4084 | qp_attr->min_rnr_timer = | |
4085 | (be32_to_cpu(context.rnr_nextrecvpsn) >> 24) & 0x1f; | |
4086 | qp_attr->timeout = context.pri_path.ackto >> 3; | |
4087 | qp_attr->retry_cnt = (be32_to_cpu(context.params1) >> 16) & 0x7; | |
4088 | qp_attr->rnr_retry = (be32_to_cpu(context.params1) >> 13) & 0x7; | |
4089 | qp_attr->alt_timeout = context.alt_path.ackto >> 3; | |
4090 | ||
4091 | done: | |
4092 | qp_attr->cur_qp_state = qp_attr->qp_state; | |
7f5eb9bb RD |
4093 | qp_attr->cap.max_recv_wr = qp->rq.wqe_cnt; |
4094 | qp_attr->cap.max_recv_sge = qp->rq.max_gs; | |
4095 | ||
6a775e2b | 4096 | if (!ibqp->uobject) { |
7f5eb9bb RD |
4097 | qp_attr->cap.max_send_wr = qp->sq.wqe_cnt; |
4098 | qp_attr->cap.max_send_sge = qp->sq.max_gs; | |
4099 | } else { | |
4100 | qp_attr->cap.max_send_wr = 0; | |
4101 | qp_attr->cap.max_send_sge = 0; | |
6a775e2b JM |
4102 | } |
4103 | ||
7f5eb9bb RD |
4104 | /* |
4105 | * We don't support inline sends for kernel QPs (yet), and we | |
4106 | * don't know what userspace's value should be. | |
4107 | */ | |
4108 | qp_attr->cap.max_inline_data = 0; | |
4109 | ||
4110 | qp_init_attr->cap = qp_attr->cap; | |
4111 | ||
521e575b RL |
4112 | qp_init_attr->create_flags = 0; |
4113 | if (qp->flags & MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK) | |
4114 | qp_init_attr->create_flags |= IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK; | |
4115 | ||
4116 | if (qp->flags & MLX4_IB_QP_LSO) | |
4117 | qp_init_attr->create_flags |= IB_QP_CREATE_IPOIB_UD_LSO; | |
4118 | ||
c1c98501 MB |
4119 | if (qp->flags & MLX4_IB_QP_NETIF) |
4120 | qp_init_attr->create_flags |= IB_QP_CREATE_NETIF_QP; | |
4121 | ||
46db567d DB |
4122 | qp_init_attr->sq_sig_type = |
4123 | qp->sq_signal_bits == cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE) ? | |
4124 | IB_SIGNAL_ALL_WR : IB_SIGNAL_REQ_WR; | |
4125 | ||
0df67030 DB |
4126 | out: |
4127 | mutex_unlock(&qp->mutex); | |
4128 | return err; | |
6a775e2b JM |
4129 | } |
4130 | ||
400b1ebc GL |
4131 | struct ib_wq *mlx4_ib_create_wq(struct ib_pd *pd, |
4132 | struct ib_wq_init_attr *init_attr, | |
4133 | struct ib_udata *udata) | |
4134 | { | |
089b645d LR |
4135 | struct mlx4_dev *dev = to_mdev(pd->device)->dev; |
4136 | struct ib_qp_init_attr ib_qp_init_attr = {}; | |
400b1ebc GL |
4137 | struct mlx4_ib_qp *qp; |
4138 | struct mlx4_ib_create_wq ucmd; | |
4139 | int err, required_cmd_sz; | |
4140 | ||
e00b64f7 | 4141 | if (!udata) |
400b1ebc GL |
4142 | return ERR_PTR(-EINVAL); |
4143 | ||
078b3573 GL |
4144 | required_cmd_sz = offsetof(typeof(ucmd), comp_mask) + |
4145 | sizeof(ucmd.comp_mask); | |
400b1ebc GL |
4146 | if (udata->inlen < required_cmd_sz) { |
4147 | pr_debug("invalid inlen\n"); | |
4148 | return ERR_PTR(-EINVAL); | |
4149 | } | |
4150 | ||
4151 | if (udata->inlen > sizeof(ucmd) && | |
4152 | !ib_is_udata_cleared(udata, sizeof(ucmd), | |
4153 | udata->inlen - sizeof(ucmd))) { | |
4154 | pr_debug("inlen is not supported\n"); | |
4155 | return ERR_PTR(-EOPNOTSUPP); | |
4156 | } | |
4157 | ||
4158 | if (udata->outlen) | |
4159 | return ERR_PTR(-EOPNOTSUPP); | |
4160 | ||
400b1ebc GL |
4161 | if (init_attr->wq_type != IB_WQT_RQ) { |
4162 | pr_debug("unsupported wq type %d\n", init_attr->wq_type); | |
4163 | return ERR_PTR(-EOPNOTSUPP); | |
4164 | } | |
4165 | ||
089b645d LR |
4166 | if (init_attr->create_flags & ~IB_WQ_FLAGS_SCATTER_FCS || |
4167 | !(dev->caps.flags & MLX4_DEV_CAP_FLAG_FCS_KEEP)) { | |
400b1ebc GL |
4168 | pr_debug("unsupported create_flags %u\n", |
4169 | init_attr->create_flags); | |
4170 | return ERR_PTR(-EOPNOTSUPP); | |
4171 | } | |
4172 | ||
4173 | qp = kzalloc(sizeof(*qp), GFP_KERNEL); | |
4174 | if (!qp) | |
4175 | return ERR_PTR(-ENOMEM); | |
4176 | ||
4177 | qp->pri.vid = 0xFFFF; | |
4178 | qp->alt.vid = 0xFFFF; | |
4179 | ||
400b1ebc GL |
4180 | ib_qp_init_attr.qp_context = init_attr->wq_context; |
4181 | ib_qp_init_attr.qp_type = IB_QPT_RAW_PACKET; | |
4182 | ib_qp_init_attr.cap.max_recv_wr = init_attr->max_wr; | |
4183 | ib_qp_init_attr.cap.max_recv_sge = init_attr->max_sge; | |
4184 | ib_qp_init_attr.recv_cq = init_attr->cq; | |
4185 | ib_qp_init_attr.send_cq = ib_qp_init_attr.recv_cq; /* Dummy CQ */ | |
4186 | ||
6d06c9aa GL |
4187 | if (init_attr->create_flags & IB_WQ_FLAGS_SCATTER_FCS) |
4188 | ib_qp_init_attr.create_flags |= IB_QP_CREATE_SCATTER_FCS; | |
4189 | ||
089b645d | 4190 | err = create_rq(pd, &ib_qp_init_attr, udata, qp); |
400b1ebc GL |
4191 | if (err) { |
4192 | kfree(qp); | |
4193 | return ERR_PTR(err); | |
4194 | } | |
4195 | ||
4196 | qp->ibwq.event_handler = init_attr->event_handler; | |
4197 | qp->ibwq.wq_num = qp->mqp.qpn; | |
4198 | qp->ibwq.state = IB_WQS_RESET; | |
4199 | ||
4200 | return &qp->ibwq; | |
4201 | } | |
4202 | ||
4203 | static int ib_wq2qp_state(enum ib_wq_state state) | |
4204 | { | |
4205 | switch (state) { | |
4206 | case IB_WQS_RESET: | |
4207 | return IB_QPS_RESET; | |
4208 | case IB_WQS_RDY: | |
4209 | return IB_QPS_RTR; | |
4210 | default: | |
4211 | return IB_QPS_ERR; | |
4212 | } | |
4213 | } | |
4214 | ||
89944450 SR |
4215 | static int _mlx4_ib_modify_wq(struct ib_wq *ibwq, enum ib_wq_state new_state, |
4216 | struct ib_udata *udata) | |
400b1ebc GL |
4217 | { |
4218 | struct mlx4_ib_qp *qp = to_mqp((struct ib_qp *)ibwq); | |
4219 | enum ib_qp_state qp_cur_state; | |
4220 | enum ib_qp_state qp_new_state; | |
4221 | int attr_mask; | |
4222 | int err; | |
4223 | ||
4224 | /* ib_qp.state represents the WQ HW state while ib_wq.state represents | |
4225 | * the WQ logic state. | |
4226 | */ | |
4227 | qp_cur_state = qp->state; | |
4228 | qp_new_state = ib_wq2qp_state(new_state); | |
4229 | ||
4230 | if (ib_wq2qp_state(new_state) == qp_cur_state) | |
4231 | return 0; | |
4232 | ||
4233 | if (new_state == IB_WQS_RDY) { | |
4234 | struct ib_qp_attr attr = {}; | |
4235 | ||
4236 | attr.port_num = qp->port; | |
4237 | attr_mask = IB_QP_PORT; | |
4238 | ||
4239 | err = __mlx4_ib_modify_qp(ibwq, MLX4_IB_RWQ_SRC, &attr, | |
89944450 SR |
4240 | attr_mask, IB_QPS_RESET, IB_QPS_INIT, |
4241 | udata); | |
400b1ebc GL |
4242 | if (err) { |
4243 | pr_debug("WQN=0x%06x failed to apply RST->INIT on the HW QP\n", | |
4244 | ibwq->wq_num); | |
4245 | return err; | |
4246 | } | |
4247 | ||
4248 | qp_cur_state = IB_QPS_INIT; | |
4249 | } | |
4250 | ||
4251 | attr_mask = 0; | |
4252 | err = __mlx4_ib_modify_qp(ibwq, MLX4_IB_RWQ_SRC, NULL, attr_mask, | |
89944450 | 4253 | qp_cur_state, qp_new_state, udata); |
400b1ebc GL |
4254 | |
4255 | if (err && (qp_cur_state == IB_QPS_INIT)) { | |
4256 | qp_new_state = IB_QPS_RESET; | |
4257 | if (__mlx4_ib_modify_qp(ibwq, MLX4_IB_RWQ_SRC, NULL, | |
89944450 SR |
4258 | attr_mask, IB_QPS_INIT, IB_QPS_RESET, |
4259 | udata)) { | |
400b1ebc GL |
4260 | pr_warn("WQN=0x%06x failed with reverting HW's resources failure\n", |
4261 | ibwq->wq_num); | |
4262 | qp_new_state = IB_QPS_INIT; | |
4263 | } | |
4264 | } | |
4265 | ||
4266 | qp->state = qp_new_state; | |
4267 | ||
4268 | return err; | |
4269 | } | |
4270 | ||
4271 | int mlx4_ib_modify_wq(struct ib_wq *ibwq, struct ib_wq_attr *wq_attr, | |
4272 | u32 wq_attr_mask, struct ib_udata *udata) | |
4273 | { | |
4274 | struct mlx4_ib_qp *qp = to_mqp((struct ib_qp *)ibwq); | |
4275 | struct mlx4_ib_modify_wq ucmd = {}; | |
4276 | size_t required_cmd_sz; | |
4277 | enum ib_wq_state cur_state, new_state; | |
4278 | int err = 0; | |
4279 | ||
4280 | required_cmd_sz = offsetof(typeof(ucmd), reserved) + | |
4281 | sizeof(ucmd.reserved); | |
4282 | if (udata->inlen < required_cmd_sz) | |
4283 | return -EINVAL; | |
4284 | ||
4285 | if (udata->inlen > sizeof(ucmd) && | |
4286 | !ib_is_udata_cleared(udata, sizeof(ucmd), | |
4287 | udata->inlen - sizeof(ucmd))) | |
4288 | return -EOPNOTSUPP; | |
4289 | ||
4290 | if (ib_copy_from_udata(&ucmd, udata, min(sizeof(ucmd), udata->inlen))) | |
4291 | return -EFAULT; | |
4292 | ||
4293 | if (ucmd.comp_mask || ucmd.reserved) | |
4294 | return -EOPNOTSUPP; | |
4295 | ||
4296 | if (wq_attr_mask & IB_WQ_FLAGS) | |
4297 | return -EOPNOTSUPP; | |
4298 | ||
af3a2ecc LR |
4299 | cur_state = wq_attr->curr_wq_state; |
4300 | new_state = wq_attr->wq_state; | |
400b1ebc GL |
4301 | |
4302 | if ((new_state == IB_WQS_RDY) && (cur_state == IB_WQS_ERR)) | |
4303 | return -EINVAL; | |
4304 | ||
4305 | if ((new_state == IB_WQS_ERR) && (cur_state == IB_WQS_RESET)) | |
4306 | return -EINVAL; | |
4307 | ||
3078f5f1 GL |
4308 | /* Need to protect against the parent RSS which also may modify WQ |
4309 | * state. | |
4310 | */ | |
4311 | mutex_lock(&qp->mutex); | |
4312 | ||
400b1ebc GL |
4313 | /* Can update HW state only if a RSS QP has already associated to this |
4314 | * WQ, so we can apply its port on the WQ. | |
4315 | */ | |
4316 | if (qp->rss_usecnt) | |
89944450 | 4317 | err = _mlx4_ib_modify_wq(ibwq, new_state, udata); |
400b1ebc GL |
4318 | |
4319 | if (!err) | |
4320 | ibwq->state = new_state; | |
4321 | ||
3078f5f1 GL |
4322 | mutex_unlock(&qp->mutex); |
4323 | ||
400b1ebc GL |
4324 | return err; |
4325 | } | |
4326 | ||
a49b1dc7 | 4327 | void mlx4_ib_destroy_wq(struct ib_wq *ibwq, struct ib_udata *udata) |
400b1ebc GL |
4328 | { |
4329 | struct mlx4_ib_dev *dev = to_mdev(ibwq->device); | |
4330 | struct mlx4_ib_qp *qp = to_mqp((struct ib_qp *)ibwq); | |
4331 | ||
4332 | if (qp->counter_index) | |
4333 | mlx4_ib_free_qp_counter(dev, qp); | |
4334 | ||
bdeacabd | 4335 | destroy_qp_common(dev, qp, MLX4_IB_RWQ_SRC, udata); |
400b1ebc GL |
4336 | |
4337 | kfree(qp); | |
400b1ebc | 4338 | } |
b8d46ca0 GL |
4339 | |
4340 | struct ib_rwq_ind_table | |
4341 | *mlx4_ib_create_rwq_ind_table(struct ib_device *device, | |
4342 | struct ib_rwq_ind_table_init_attr *init_attr, | |
4343 | struct ib_udata *udata) | |
4344 | { | |
4345 | struct ib_rwq_ind_table *rwq_ind_table; | |
4346 | struct mlx4_ib_create_rwq_ind_tbl_resp resp = {}; | |
4347 | unsigned int ind_tbl_size = 1 << init_attr->log_ind_tbl_size; | |
4348 | unsigned int base_wqn; | |
4349 | size_t min_resp_len; | |
4350 | int i; | |
4351 | int err; | |
4352 | ||
4353 | if (udata->inlen > 0 && | |
4354 | !ib_is_udata_cleared(udata, 0, | |
4355 | udata->inlen)) | |
4356 | return ERR_PTR(-EOPNOTSUPP); | |
4357 | ||
4358 | min_resp_len = offsetof(typeof(resp), reserved) + sizeof(resp.reserved); | |
4359 | if (udata->outlen && udata->outlen < min_resp_len) | |
4360 | return ERR_PTR(-EINVAL); | |
4361 | ||
4362 | if (ind_tbl_size > | |
4363 | device->attrs.rss_caps.max_rwq_indirection_table_size) { | |
4364 | pr_debug("log_ind_tbl_size = %d is bigger than supported = %d\n", | |
4365 | ind_tbl_size, | |
4366 | device->attrs.rss_caps.max_rwq_indirection_table_size); | |
4367 | return ERR_PTR(-EINVAL); | |
4368 | } | |
4369 | ||
4370 | base_wqn = init_attr->ind_tbl[0]->wq_num; | |
4371 | ||
4372 | if (base_wqn % ind_tbl_size) { | |
4373 | pr_debug("WQN=0x%x isn't aligned with indirection table size\n", | |
4374 | base_wqn); | |
4375 | return ERR_PTR(-EINVAL); | |
4376 | } | |
4377 | ||
4378 | for (i = 1; i < ind_tbl_size; i++) { | |
4379 | if (++base_wqn != init_attr->ind_tbl[i]->wq_num) { | |
4380 | pr_debug("indirection table's WQNs aren't consecutive\n"); | |
4381 | return ERR_PTR(-EINVAL); | |
4382 | } | |
4383 | } | |
4384 | ||
4385 | rwq_ind_table = kzalloc(sizeof(*rwq_ind_table), GFP_KERNEL); | |
4386 | if (!rwq_ind_table) | |
4387 | return ERR_PTR(-ENOMEM); | |
4388 | ||
4389 | if (udata->outlen) { | |
4390 | resp.response_length = offsetof(typeof(resp), response_length) + | |
4391 | sizeof(resp.response_length); | |
4392 | err = ib_copy_to_udata(udata, &resp, resp.response_length); | |
4393 | if (err) | |
4394 | goto err; | |
4395 | } | |
4396 | ||
4397 | return rwq_ind_table; | |
4398 | ||
4399 | err: | |
4400 | kfree(rwq_ind_table); | |
4401 | return ERR_PTR(err); | |
4402 | } | |
4403 | ||
4404 | int mlx4_ib_destroy_rwq_ind_table(struct ib_rwq_ind_table *ib_rwq_ind_tbl) | |
4405 | { | |
4406 | kfree(ib_rwq_ind_tbl); | |
4407 | return 0; | |
4408 | } | |
1975acd9 YH |
4409 | |
4410 | struct mlx4_ib_drain_cqe { | |
4411 | struct ib_cqe cqe; | |
4412 | struct completion done; | |
4413 | }; | |
4414 | ||
4415 | static void mlx4_ib_drain_qp_done(struct ib_cq *cq, struct ib_wc *wc) | |
4416 | { | |
4417 | struct mlx4_ib_drain_cqe *cqe = container_of(wc->wr_cqe, | |
4418 | struct mlx4_ib_drain_cqe, | |
4419 | cqe); | |
4420 | ||
4421 | complete(&cqe->done); | |
4422 | } | |
4423 | ||
4424 | /* This function returns only once the drained WR was completed */ | |
4425 | static void handle_drain_completion(struct ib_cq *cq, | |
4426 | struct mlx4_ib_drain_cqe *sdrain, | |
4427 | struct mlx4_ib_dev *dev) | |
4428 | { | |
4429 | struct mlx4_dev *mdev = dev->dev; | |
4430 | ||
4431 | if (cq->poll_ctx == IB_POLL_DIRECT) { | |
4432 | while (wait_for_completion_timeout(&sdrain->done, HZ / 10) <= 0) | |
4433 | ib_process_cq_direct(cq, -1); | |
4434 | return; | |
4435 | } | |
4436 | ||
4437 | if (mdev->persist->state == MLX4_DEVICE_STATE_INTERNAL_ERROR) { | |
4438 | struct mlx4_ib_cq *mcq = to_mcq(cq); | |
4439 | bool triggered = false; | |
4440 | unsigned long flags; | |
4441 | ||
4442 | spin_lock_irqsave(&dev->reset_flow_resource_lock, flags); | |
4443 | /* Make sure that the CQ handler won't run if wasn't run yet */ | |
4444 | if (!mcq->mcq.reset_notify_added) | |
4445 | mcq->mcq.reset_notify_added = 1; | |
4446 | else | |
4447 | triggered = true; | |
4448 | spin_unlock_irqrestore(&dev->reset_flow_resource_lock, flags); | |
4449 | ||
4450 | if (triggered) { | |
4451 | /* Wait for any scheduled/running task to be ended */ | |
4452 | switch (cq->poll_ctx) { | |
4453 | case IB_POLL_SOFTIRQ: | |
4454 | irq_poll_disable(&cq->iop); | |
4455 | irq_poll_enable(&cq->iop); | |
4456 | break; | |
4457 | case IB_POLL_WORKQUEUE: | |
4458 | cancel_work_sync(&cq->work); | |
4459 | break; | |
4460 | default: | |
4461 | WARN_ON_ONCE(1); | |
4462 | } | |
4463 | } | |
4464 | ||
4465 | /* Run the CQ handler - this makes sure that the drain WR will | |
4466 | * be processed if wasn't processed yet. | |
4467 | */ | |
4468 | mcq->mcq.comp(&mcq->mcq); | |
4469 | } | |
4470 | ||
4471 | wait_for_completion(&sdrain->done); | |
4472 | } | |
4473 | ||
4474 | void mlx4_ib_drain_sq(struct ib_qp *qp) | |
4475 | { | |
4476 | struct ib_cq *cq = qp->send_cq; | |
4477 | struct ib_qp_attr attr = { .qp_state = IB_QPS_ERR }; | |
4478 | struct mlx4_ib_drain_cqe sdrain; | |
d34ac5cd | 4479 | const struct ib_send_wr *bad_swr; |
1975acd9 YH |
4480 | struct ib_rdma_wr swr = { |
4481 | .wr = { | |
4482 | .next = NULL, | |
4483 | { .wr_cqe = &sdrain.cqe, }, | |
4484 | .opcode = IB_WR_RDMA_WRITE, | |
4485 | }, | |
4486 | }; | |
4487 | int ret; | |
4488 | struct mlx4_ib_dev *dev = to_mdev(qp->device); | |
4489 | struct mlx4_dev *mdev = dev->dev; | |
4490 | ||
4491 | ret = ib_modify_qp(qp, &attr, IB_QP_STATE); | |
4492 | if (ret && mdev->persist->state != MLX4_DEVICE_STATE_INTERNAL_ERROR) { | |
4493 | WARN_ONCE(ret, "failed to drain send queue: %d\n", ret); | |
4494 | return; | |
4495 | } | |
4496 | ||
4497 | sdrain.cqe.done = mlx4_ib_drain_qp_done; | |
4498 | init_completion(&sdrain.done); | |
4499 | ||
4500 | ret = _mlx4_ib_post_send(qp, &swr.wr, &bad_swr, true); | |
4501 | if (ret) { | |
4502 | WARN_ONCE(ret, "failed to drain send queue: %d\n", ret); | |
4503 | return; | |
4504 | } | |
4505 | ||
4506 | handle_drain_completion(cq, &sdrain, dev); | |
4507 | } | |
4508 | ||
4509 | void mlx4_ib_drain_rq(struct ib_qp *qp) | |
4510 | { | |
4511 | struct ib_cq *cq = qp->recv_cq; | |
4512 | struct ib_qp_attr attr = { .qp_state = IB_QPS_ERR }; | |
4513 | struct mlx4_ib_drain_cqe rdrain; | |
d34ac5cd BVA |
4514 | struct ib_recv_wr rwr = {}; |
4515 | const struct ib_recv_wr *bad_rwr; | |
1975acd9 YH |
4516 | int ret; |
4517 | struct mlx4_ib_dev *dev = to_mdev(qp->device); | |
4518 | struct mlx4_dev *mdev = dev->dev; | |
4519 | ||
4520 | ret = ib_modify_qp(qp, &attr, IB_QP_STATE); | |
4521 | if (ret && mdev->persist->state != MLX4_DEVICE_STATE_INTERNAL_ERROR) { | |
4522 | WARN_ONCE(ret, "failed to drain recv queue: %d\n", ret); | |
4523 | return; | |
4524 | } | |
4525 | ||
4526 | rwr.wr_cqe = &rdrain.cqe; | |
4527 | rdrain.cqe.done = mlx4_ib_drain_qp_done; | |
4528 | init_completion(&rdrain.done); | |
4529 | ||
4530 | ret = _mlx4_ib_post_recv(qp, &rwr, &bad_rwr, true); | |
4531 | if (ret) { | |
4532 | WARN_ONCE(ret, "failed to drain recv queue: %d\n", ret); | |
4533 | return; | |
4534 | } | |
4535 | ||
4536 | handle_drain_completion(cq, &rdrain, dev); | |
4537 | } |