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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> |
0ef2f05c | 39 | #include <linux/vmalloc.h> |
ea54b10c | 40 | |
225c7b1f RD |
41 | #include <rdma/ib_cache.h> |
42 | #include <rdma/ib_pack.h> | |
4c3eb3ca | 43 | #include <rdma/ib_addr.h> |
1ffeb2eb | 44 | #include <rdma/ib_mad.h> |
225c7b1f | 45 | |
2f48485d | 46 | #include <linux/mlx4/driver.h> |
225c7b1f RD |
47 | #include <linux/mlx4/qp.h> |
48 | ||
49 | #include "mlx4_ib.h" | |
50 | #include "user.h" | |
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); | |
56 | ||
225c7b1f RD |
57 | enum { |
58 | MLX4_IB_ACK_REQ_FREQ = 8, | |
59 | }; | |
60 | ||
61 | enum { | |
62 | MLX4_IB_DEFAULT_SCHED_QUEUE = 0x83, | |
fa417f7b EC |
63 | MLX4_IB_DEFAULT_QP0_SCHED_QUEUE = 0x3f, |
64 | MLX4_IB_LINK_TYPE_IB = 0, | |
65 | MLX4_IB_LINK_TYPE_ETH = 1 | |
225c7b1f RD |
66 | }; |
67 | ||
68 | enum { | |
69 | /* | |
fa417f7b | 70 | * Largest possible UD header: send with GRH and immediate |
4c3eb3ca EC |
71 | * data plus 18 bytes for an Ethernet header with VLAN/802.1Q |
72 | * tag. (LRH would only use 8 bytes, so Ethernet is the | |
73 | * biggest case) | |
225c7b1f | 74 | */ |
4c3eb3ca | 75 | MLX4_IB_UD_HEADER_SIZE = 82, |
417608c2 | 76 | MLX4_IB_LSO_HEADER_SPARE = 128, |
225c7b1f RD |
77 | }; |
78 | ||
fa417f7b EC |
79 | enum { |
80 | MLX4_IB_IBOE_ETHERTYPE = 0x8915 | |
81 | }; | |
82 | ||
225c7b1f RD |
83 | struct mlx4_ib_sqp { |
84 | struct mlx4_ib_qp qp; | |
85 | int pkey_index; | |
86 | u32 qkey; | |
87 | u32 send_psn; | |
88 | struct ib_ud_header ud_header; | |
89 | u8 header_buf[MLX4_IB_UD_HEADER_SIZE]; | |
e1b866c6 | 90 | struct ib_qp *roce_v2_gsi; |
225c7b1f RD |
91 | }; |
92 | ||
83904132 | 93 | enum { |
417608c2 EC |
94 | MLX4_IB_MIN_SQ_STRIDE = 6, |
95 | MLX4_IB_CACHE_LINE_SIZE = 64, | |
83904132 JM |
96 | }; |
97 | ||
3987a2d3 OG |
98 | enum { |
99 | MLX4_RAW_QP_MTU = 7, | |
100 | MLX4_RAW_QP_MSGMAX = 31, | |
101 | }; | |
102 | ||
297e0dad MS |
103 | #ifndef ETH_ALEN |
104 | #define ETH_ALEN 6 | |
105 | #endif | |
297e0dad | 106 | |
225c7b1f | 107 | static const __be32 mlx4_ib_opcode[] = { |
6fa8f719 VS |
108 | [IB_WR_SEND] = cpu_to_be32(MLX4_OPCODE_SEND), |
109 | [IB_WR_LSO] = cpu_to_be32(MLX4_OPCODE_LSO), | |
110 | [IB_WR_SEND_WITH_IMM] = cpu_to_be32(MLX4_OPCODE_SEND_IMM), | |
111 | [IB_WR_RDMA_WRITE] = cpu_to_be32(MLX4_OPCODE_RDMA_WRITE), | |
112 | [IB_WR_RDMA_WRITE_WITH_IMM] = cpu_to_be32(MLX4_OPCODE_RDMA_WRITE_IMM), | |
113 | [IB_WR_RDMA_READ] = cpu_to_be32(MLX4_OPCODE_RDMA_READ), | |
114 | [IB_WR_ATOMIC_CMP_AND_SWP] = cpu_to_be32(MLX4_OPCODE_ATOMIC_CS), | |
115 | [IB_WR_ATOMIC_FETCH_AND_ADD] = cpu_to_be32(MLX4_OPCODE_ATOMIC_FA), | |
116 | [IB_WR_SEND_WITH_INV] = cpu_to_be32(MLX4_OPCODE_SEND_INVAL), | |
117 | [IB_WR_LOCAL_INV] = cpu_to_be32(MLX4_OPCODE_LOCAL_INVAL), | |
1b2cd0fc | 118 | [IB_WR_REG_MR] = cpu_to_be32(MLX4_OPCODE_FMR), |
6fa8f719 VS |
119 | [IB_WR_MASKED_ATOMIC_CMP_AND_SWP] = cpu_to_be32(MLX4_OPCODE_MASKED_ATOMIC_CS), |
120 | [IB_WR_MASKED_ATOMIC_FETCH_AND_ADD] = cpu_to_be32(MLX4_OPCODE_MASKED_ATOMIC_FA), | |
225c7b1f RD |
121 | }; |
122 | ||
123 | static struct mlx4_ib_sqp *to_msqp(struct mlx4_ib_qp *mqp) | |
124 | { | |
125 | return container_of(mqp, struct mlx4_ib_sqp, qp); | |
126 | } | |
127 | ||
1ffeb2eb JM |
128 | static int is_tunnel_qp(struct mlx4_ib_dev *dev, struct mlx4_ib_qp *qp) |
129 | { | |
130 | if (!mlx4_is_master(dev->dev)) | |
131 | return 0; | |
132 | ||
47605df9 JM |
133 | return qp->mqp.qpn >= dev->dev->phys_caps.base_tunnel_sqpn && |
134 | qp->mqp.qpn < dev->dev->phys_caps.base_tunnel_sqpn + | |
135 | 8 * MLX4_MFUNC_MAX; | |
1ffeb2eb JM |
136 | } |
137 | ||
225c7b1f RD |
138 | static int is_sqp(struct mlx4_ib_dev *dev, struct mlx4_ib_qp *qp) |
139 | { | |
47605df9 JM |
140 | int proxy_sqp = 0; |
141 | int real_sqp = 0; | |
142 | int i; | |
143 | /* PPF or Native -- real SQP */ | |
144 | real_sqp = ((mlx4_is_master(dev->dev) || !mlx4_is_mfunc(dev->dev)) && | |
145 | qp->mqp.qpn >= dev->dev->phys_caps.base_sqpn && | |
146 | qp->mqp.qpn <= dev->dev->phys_caps.base_sqpn + 3); | |
147 | if (real_sqp) | |
148 | return 1; | |
149 | /* VF or PF -- proxy SQP */ | |
150 | if (mlx4_is_mfunc(dev->dev)) { | |
151 | for (i = 0; i < dev->dev->caps.num_ports; i++) { | |
152 | if (qp->mqp.qpn == dev->dev->caps.qp0_proxy[i] || | |
153 | qp->mqp.qpn == dev->dev->caps.qp1_proxy[i]) { | |
154 | proxy_sqp = 1; | |
155 | break; | |
156 | } | |
157 | } | |
158 | } | |
e1b866c6 MS |
159 | if (proxy_sqp) |
160 | return 1; | |
161 | ||
162 | return !!(qp->flags & MLX4_IB_ROCE_V2_GSI_QP); | |
225c7b1f RD |
163 | } |
164 | ||
1ffeb2eb | 165 | /* used for INIT/CLOSE port logic */ |
225c7b1f RD |
166 | static int is_qp0(struct mlx4_ib_dev *dev, struct mlx4_ib_qp *qp) |
167 | { | |
47605df9 JM |
168 | int proxy_qp0 = 0; |
169 | int real_qp0 = 0; | |
170 | int i; | |
171 | /* PPF or Native -- real QP0 */ | |
172 | real_qp0 = ((mlx4_is_master(dev->dev) || !mlx4_is_mfunc(dev->dev)) && | |
173 | qp->mqp.qpn >= dev->dev->phys_caps.base_sqpn && | |
174 | qp->mqp.qpn <= dev->dev->phys_caps.base_sqpn + 1); | |
175 | if (real_qp0) | |
176 | return 1; | |
177 | /* VF or PF -- proxy QP0 */ | |
178 | if (mlx4_is_mfunc(dev->dev)) { | |
179 | for (i = 0; i < dev->dev->caps.num_ports; i++) { | |
180 | if (qp->mqp.qpn == dev->dev->caps.qp0_proxy[i]) { | |
181 | proxy_qp0 = 1; | |
182 | break; | |
183 | } | |
184 | } | |
185 | } | |
186 | return proxy_qp0; | |
225c7b1f RD |
187 | } |
188 | ||
189 | static void *get_wqe(struct mlx4_ib_qp *qp, int offset) | |
190 | { | |
1c69fc2a | 191 | return mlx4_buf_offset(&qp->buf, offset); |
225c7b1f RD |
192 | } |
193 | ||
194 | static void *get_recv_wqe(struct mlx4_ib_qp *qp, int n) | |
195 | { | |
196 | return get_wqe(qp, qp->rq.offset + (n << qp->rq.wqe_shift)); | |
197 | } | |
198 | ||
199 | static void *get_send_wqe(struct mlx4_ib_qp *qp, int n) | |
200 | { | |
201 | return get_wqe(qp, qp->sq.offset + (n << qp->sq.wqe_shift)); | |
202 | } | |
203 | ||
0e6e7416 RD |
204 | /* |
205 | * Stamp a SQ WQE so that it is invalid if prefetched by marking the | |
ea54b10c JM |
206 | * first four bytes of every 64 byte chunk with |
207 | * 0x7FFFFFF | (invalid_ownership_value << 31). | |
208 | * | |
209 | * When the max work request size is less than or equal to the WQE | |
210 | * basic block size, as an optimization, we can stamp all WQEs with | |
211 | * 0xffffffff, and skip the very first chunk of each WQE. | |
0e6e7416 | 212 | */ |
ea54b10c | 213 | static void stamp_send_wqe(struct mlx4_ib_qp *qp, int n, int size) |
0e6e7416 | 214 | { |
d2ae16d5 | 215 | __be32 *wqe; |
0e6e7416 | 216 | int i; |
ea54b10c JM |
217 | int s; |
218 | int ind; | |
219 | void *buf; | |
220 | __be32 stamp; | |
9670e553 | 221 | struct mlx4_wqe_ctrl_seg *ctrl; |
ea54b10c | 222 | |
ea54b10c | 223 | if (qp->sq_max_wqes_per_wr > 1) { |
9670e553 | 224 | s = roundup(size, 1U << qp->sq.wqe_shift); |
ea54b10c JM |
225 | for (i = 0; i < s; i += 64) { |
226 | ind = (i >> qp->sq.wqe_shift) + n; | |
227 | stamp = ind & qp->sq.wqe_cnt ? cpu_to_be32(0x7fffffff) : | |
228 | cpu_to_be32(0xffffffff); | |
229 | buf = get_send_wqe(qp, ind & (qp->sq.wqe_cnt - 1)); | |
230 | wqe = buf + (i & ((1 << qp->sq.wqe_shift) - 1)); | |
231 | *wqe = stamp; | |
232 | } | |
233 | } else { | |
9670e553 EC |
234 | ctrl = buf = get_send_wqe(qp, n & (qp->sq.wqe_cnt - 1)); |
235 | s = (ctrl->fence_size & 0x3f) << 4; | |
ea54b10c JM |
236 | for (i = 64; i < s; i += 64) { |
237 | wqe = buf + i; | |
d2ae16d5 | 238 | *wqe = cpu_to_be32(0xffffffff); |
ea54b10c JM |
239 | } |
240 | } | |
241 | } | |
242 | ||
243 | static void post_nop_wqe(struct mlx4_ib_qp *qp, int n, int size) | |
244 | { | |
245 | struct mlx4_wqe_ctrl_seg *ctrl; | |
246 | struct mlx4_wqe_inline_seg *inl; | |
247 | void *wqe; | |
248 | int s; | |
249 | ||
250 | ctrl = wqe = get_send_wqe(qp, n & (qp->sq.wqe_cnt - 1)); | |
251 | s = sizeof(struct mlx4_wqe_ctrl_seg); | |
252 | ||
253 | if (qp->ibqp.qp_type == IB_QPT_UD) { | |
254 | struct mlx4_wqe_datagram_seg *dgram = wqe + sizeof *ctrl; | |
255 | struct mlx4_av *av = (struct mlx4_av *)dgram->av; | |
256 | memset(dgram, 0, sizeof *dgram); | |
257 | av->port_pd = cpu_to_be32((qp->port << 24) | to_mpd(qp->ibqp.pd)->pdn); | |
258 | s += sizeof(struct mlx4_wqe_datagram_seg); | |
259 | } | |
260 | ||
261 | /* Pad the remainder of the WQE with an inline data segment. */ | |
262 | if (size > s) { | |
263 | inl = wqe + s; | |
264 | inl->byte_count = cpu_to_be32(1 << 31 | (size - s - sizeof *inl)); | |
265 | } | |
266 | ctrl->srcrb_flags = 0; | |
267 | ctrl->fence_size = size / 16; | |
268 | /* | |
269 | * Make sure descriptor is fully written before setting ownership bit | |
270 | * (because HW can start executing as soon as we do). | |
271 | */ | |
272 | wmb(); | |
273 | ||
274 | ctrl->owner_opcode = cpu_to_be32(MLX4_OPCODE_NOP | MLX4_WQE_CTRL_NEC) | | |
275 | (n & qp->sq.wqe_cnt ? cpu_to_be32(1 << 31) : 0); | |
0e6e7416 | 276 | |
ea54b10c JM |
277 | stamp_send_wqe(qp, n + qp->sq_spare_wqes, size); |
278 | } | |
279 | ||
280 | /* Post NOP WQE to prevent wrap-around in the middle of WR */ | |
281 | static inline unsigned pad_wraparound(struct mlx4_ib_qp *qp, int ind) | |
282 | { | |
283 | unsigned s = qp->sq.wqe_cnt - (ind & (qp->sq.wqe_cnt - 1)); | |
284 | if (unlikely(s < qp->sq_max_wqes_per_wr)) { | |
285 | post_nop_wqe(qp, ind, s << qp->sq.wqe_shift); | |
286 | ind += s; | |
287 | } | |
288 | return ind; | |
0e6e7416 RD |
289 | } |
290 | ||
225c7b1f RD |
291 | static void mlx4_ib_qp_event(struct mlx4_qp *qp, enum mlx4_event type) |
292 | { | |
293 | struct ib_event event; | |
294 | struct ib_qp *ibqp = &to_mibqp(qp)->ibqp; | |
295 | ||
296 | if (type == MLX4_EVENT_TYPE_PATH_MIG) | |
297 | to_mibqp(qp)->port = to_mibqp(qp)->alt_port; | |
298 | ||
299 | if (ibqp->event_handler) { | |
300 | event.device = ibqp->device; | |
301 | event.element.qp = ibqp; | |
302 | switch (type) { | |
303 | case MLX4_EVENT_TYPE_PATH_MIG: | |
304 | event.event = IB_EVENT_PATH_MIG; | |
305 | break; | |
306 | case MLX4_EVENT_TYPE_COMM_EST: | |
307 | event.event = IB_EVENT_COMM_EST; | |
308 | break; | |
309 | case MLX4_EVENT_TYPE_SQ_DRAINED: | |
310 | event.event = IB_EVENT_SQ_DRAINED; | |
311 | break; | |
312 | case MLX4_EVENT_TYPE_SRQ_QP_LAST_WQE: | |
313 | event.event = IB_EVENT_QP_LAST_WQE_REACHED; | |
314 | break; | |
315 | case MLX4_EVENT_TYPE_WQ_CATAS_ERROR: | |
316 | event.event = IB_EVENT_QP_FATAL; | |
317 | break; | |
318 | case MLX4_EVENT_TYPE_PATH_MIG_FAILED: | |
319 | event.event = IB_EVENT_PATH_MIG_ERR; | |
320 | break; | |
321 | case MLX4_EVENT_TYPE_WQ_INVAL_REQ_ERROR: | |
322 | event.event = IB_EVENT_QP_REQ_ERR; | |
323 | break; | |
324 | case MLX4_EVENT_TYPE_WQ_ACCESS_ERROR: | |
325 | event.event = IB_EVENT_QP_ACCESS_ERR; | |
326 | break; | |
327 | default: | |
987c8f8f | 328 | pr_warn("Unexpected event type %d " |
225c7b1f RD |
329 | "on QP %06x\n", type, qp->qpn); |
330 | return; | |
331 | } | |
332 | ||
333 | ibqp->event_handler(&event, ibqp->qp_context); | |
334 | } | |
335 | } | |
336 | ||
1ffeb2eb | 337 | static int send_wqe_overhead(enum mlx4_ib_qp_type type, u32 flags) |
225c7b1f RD |
338 | { |
339 | /* | |
340 | * UD WQEs must have a datagram segment. | |
341 | * RC and UC WQEs might have a remote address segment. | |
342 | * MLX WQEs need two extra inline data segments (for the UD | |
343 | * header and space for the ICRC). | |
344 | */ | |
345 | switch (type) { | |
1ffeb2eb | 346 | case MLX4_IB_QPT_UD: |
225c7b1f | 347 | return sizeof (struct mlx4_wqe_ctrl_seg) + |
b832be1e | 348 | sizeof (struct mlx4_wqe_datagram_seg) + |
417608c2 | 349 | ((flags & MLX4_IB_QP_LSO) ? MLX4_IB_LSO_HEADER_SPARE : 0); |
1ffeb2eb JM |
350 | case MLX4_IB_QPT_PROXY_SMI_OWNER: |
351 | case MLX4_IB_QPT_PROXY_SMI: | |
352 | case MLX4_IB_QPT_PROXY_GSI: | |
353 | return sizeof (struct mlx4_wqe_ctrl_seg) + | |
354 | sizeof (struct mlx4_wqe_datagram_seg) + 64; | |
355 | case MLX4_IB_QPT_TUN_SMI_OWNER: | |
356 | case MLX4_IB_QPT_TUN_GSI: | |
357 | return sizeof (struct mlx4_wqe_ctrl_seg) + | |
358 | sizeof (struct mlx4_wqe_datagram_seg); | |
359 | ||
360 | case MLX4_IB_QPT_UC: | |
225c7b1f RD |
361 | return sizeof (struct mlx4_wqe_ctrl_seg) + |
362 | sizeof (struct mlx4_wqe_raddr_seg); | |
1ffeb2eb | 363 | case MLX4_IB_QPT_RC: |
225c7b1f | 364 | return sizeof (struct mlx4_wqe_ctrl_seg) + |
f2940e2c | 365 | sizeof (struct mlx4_wqe_masked_atomic_seg) + |
225c7b1f | 366 | sizeof (struct mlx4_wqe_raddr_seg); |
1ffeb2eb JM |
367 | case MLX4_IB_QPT_SMI: |
368 | case MLX4_IB_QPT_GSI: | |
225c7b1f RD |
369 | return sizeof (struct mlx4_wqe_ctrl_seg) + |
370 | ALIGN(MLX4_IB_UD_HEADER_SIZE + | |
e61ef241 RD |
371 | DIV_ROUND_UP(MLX4_IB_UD_HEADER_SIZE, |
372 | MLX4_INLINE_ALIGN) * | |
225c7b1f RD |
373 | sizeof (struct mlx4_wqe_inline_seg), |
374 | sizeof (struct mlx4_wqe_data_seg)) + | |
375 | ALIGN(4 + | |
376 | sizeof (struct mlx4_wqe_inline_seg), | |
377 | sizeof (struct mlx4_wqe_data_seg)); | |
378 | default: | |
379 | return sizeof (struct mlx4_wqe_ctrl_seg); | |
380 | } | |
381 | } | |
382 | ||
2446304d | 383 | static int set_rq_size(struct mlx4_ib_dev *dev, struct ib_qp_cap *cap, |
0a1405da | 384 | int is_user, int has_rq, struct mlx4_ib_qp *qp) |
225c7b1f | 385 | { |
2446304d | 386 | /* Sanity check RQ size before proceeding */ |
fc2d0044 SG |
387 | if (cap->max_recv_wr > dev->dev->caps.max_wqes - MLX4_IB_SQ_MAX_SPARE || |
388 | cap->max_recv_sge > min(dev->dev->caps.max_sq_sg, dev->dev->caps.max_rq_sg)) | |
2446304d EC |
389 | return -EINVAL; |
390 | ||
0a1405da | 391 | if (!has_rq) { |
a4cd7ed8 RD |
392 | if (cap->max_recv_wr) |
393 | return -EINVAL; | |
2446304d | 394 | |
0e6e7416 | 395 | qp->rq.wqe_cnt = qp->rq.max_gs = 0; |
a4cd7ed8 RD |
396 | } else { |
397 | /* HW requires >= 1 RQ entry with >= 1 gather entry */ | |
398 | if (is_user && (!cap->max_recv_wr || !cap->max_recv_sge)) | |
399 | return -EINVAL; | |
400 | ||
0e6e7416 | 401 | qp->rq.wqe_cnt = roundup_pow_of_two(max(1U, cap->max_recv_wr)); |
42c059ea | 402 | qp->rq.max_gs = roundup_pow_of_two(max(1U, cap->max_recv_sge)); |
a4cd7ed8 RD |
403 | qp->rq.wqe_shift = ilog2(qp->rq.max_gs * sizeof (struct mlx4_wqe_data_seg)); |
404 | } | |
2446304d | 405 | |
fc2d0044 SG |
406 | /* leave userspace return values as they were, so as not to break ABI */ |
407 | if (is_user) { | |
408 | cap->max_recv_wr = qp->rq.max_post = qp->rq.wqe_cnt; | |
409 | cap->max_recv_sge = qp->rq.max_gs; | |
410 | } else { | |
411 | cap->max_recv_wr = qp->rq.max_post = | |
412 | min(dev->dev->caps.max_wqes - MLX4_IB_SQ_MAX_SPARE, qp->rq.wqe_cnt); | |
413 | cap->max_recv_sge = min(qp->rq.max_gs, | |
414 | min(dev->dev->caps.max_sq_sg, | |
415 | dev->dev->caps.max_rq_sg)); | |
416 | } | |
2446304d EC |
417 | |
418 | return 0; | |
419 | } | |
420 | ||
421 | static int set_kernel_sq_size(struct mlx4_ib_dev *dev, struct ib_qp_cap *cap, | |
73898db0 HA |
422 | enum mlx4_ib_qp_type type, struct mlx4_ib_qp *qp, |
423 | bool shrink_wqe) | |
2446304d | 424 | { |
ea54b10c JM |
425 | int s; |
426 | ||
2446304d | 427 | /* Sanity check SQ size before proceeding */ |
fc2d0044 SG |
428 | if (cap->max_send_wr > (dev->dev->caps.max_wqes - MLX4_IB_SQ_MAX_SPARE) || |
429 | cap->max_send_sge > min(dev->dev->caps.max_sq_sg, dev->dev->caps.max_rq_sg) || | |
b832be1e | 430 | cap->max_inline_data + send_wqe_overhead(type, qp->flags) + |
225c7b1f RD |
431 | sizeof (struct mlx4_wqe_inline_seg) > dev->dev->caps.max_sq_desc_sz) |
432 | return -EINVAL; | |
433 | ||
434 | /* | |
435 | * For MLX transport we need 2 extra S/G entries: | |
436 | * one for the header and one for the checksum at the end | |
437 | */ | |
1ffeb2eb JM |
438 | if ((type == MLX4_IB_QPT_SMI || type == MLX4_IB_QPT_GSI || |
439 | type & (MLX4_IB_QPT_PROXY_SMI_OWNER | MLX4_IB_QPT_TUN_SMI_OWNER)) && | |
225c7b1f RD |
440 | cap->max_send_sge + 2 > dev->dev->caps.max_sq_sg) |
441 | return -EINVAL; | |
442 | ||
ea54b10c JM |
443 | s = max(cap->max_send_sge * sizeof (struct mlx4_wqe_data_seg), |
444 | cap->max_inline_data + sizeof (struct mlx4_wqe_inline_seg)) + | |
b832be1e | 445 | send_wqe_overhead(type, qp->flags); |
225c7b1f | 446 | |
cd155c1c RD |
447 | if (s > dev->dev->caps.max_sq_desc_sz) |
448 | return -EINVAL; | |
449 | ||
0e6e7416 | 450 | /* |
ea54b10c JM |
451 | * Hermon supports shrinking WQEs, such that a single work |
452 | * request can include multiple units of 1 << wqe_shift. This | |
453 | * way, work requests can differ in size, and do not have to | |
454 | * be a power of 2 in size, saving memory and speeding up send | |
455 | * WR posting. Unfortunately, if we do this then the | |
456 | * wqe_index field in CQEs can't be used to look up the WR ID | |
457 | * anymore, so we do this only if selective signaling is off. | |
458 | * | |
459 | * Further, on 32-bit platforms, we can't use vmap() to make | |
af901ca1 | 460 | * the QP buffer virtually contiguous. Thus we have to use |
ea54b10c JM |
461 | * constant-sized WRs to make sure a WR is always fully within |
462 | * a single page-sized chunk. | |
463 | * | |
464 | * Finally, we use NOP work requests to pad the end of the | |
465 | * work queue, to avoid wrap-around in the middle of WR. We | |
466 | * set NEC bit to avoid getting completions with error for | |
467 | * these NOP WRs, but since NEC is only supported starting | |
468 | * with firmware 2.2.232, we use constant-sized WRs for older | |
469 | * firmware. | |
470 | * | |
471 | * And, since MLX QPs only support SEND, we use constant-sized | |
472 | * WRs in this case. | |
473 | * | |
474 | * We look for the smallest value of wqe_shift such that the | |
475 | * resulting number of wqes does not exceed device | |
476 | * capabilities. | |
477 | * | |
478 | * We set WQE size to at least 64 bytes, this way stamping | |
479 | * invalidates each WQE. | |
0e6e7416 | 480 | */ |
73898db0 | 481 | if (shrink_wqe && dev->dev->caps.fw_ver >= MLX4_FW_VER_WQE_CTRL_NEC && |
ea54b10c | 482 | qp->sq_signal_bits && BITS_PER_LONG == 64 && |
1ffeb2eb JM |
483 | type != MLX4_IB_QPT_SMI && type != MLX4_IB_QPT_GSI && |
484 | !(type & (MLX4_IB_QPT_PROXY_SMI_OWNER | MLX4_IB_QPT_PROXY_SMI | | |
485 | MLX4_IB_QPT_PROXY_GSI | MLX4_IB_QPT_TUN_SMI_OWNER))) | |
ea54b10c JM |
486 | qp->sq.wqe_shift = ilog2(64); |
487 | else | |
488 | qp->sq.wqe_shift = ilog2(roundup_pow_of_two(s)); | |
489 | ||
490 | for (;;) { | |
ea54b10c JM |
491 | qp->sq_max_wqes_per_wr = DIV_ROUND_UP(s, 1U << qp->sq.wqe_shift); |
492 | ||
493 | /* | |
494 | * We need to leave 2 KB + 1 WR of headroom in the SQ to | |
495 | * allow HW to prefetch. | |
496 | */ | |
497 | qp->sq_spare_wqes = (2048 >> qp->sq.wqe_shift) + qp->sq_max_wqes_per_wr; | |
498 | qp->sq.wqe_cnt = roundup_pow_of_two(cap->max_send_wr * | |
499 | qp->sq_max_wqes_per_wr + | |
500 | qp->sq_spare_wqes); | |
501 | ||
502 | if (qp->sq.wqe_cnt <= dev->dev->caps.max_wqes) | |
503 | break; | |
504 | ||
505 | if (qp->sq_max_wqes_per_wr <= 1) | |
506 | return -EINVAL; | |
507 | ||
508 | ++qp->sq.wqe_shift; | |
509 | } | |
510 | ||
cd155c1c RD |
511 | qp->sq.max_gs = (min(dev->dev->caps.max_sq_desc_sz, |
512 | (qp->sq_max_wqes_per_wr << qp->sq.wqe_shift)) - | |
b832be1e EC |
513 | send_wqe_overhead(type, qp->flags)) / |
514 | sizeof (struct mlx4_wqe_data_seg); | |
0e6e7416 RD |
515 | |
516 | qp->buf_size = (qp->rq.wqe_cnt << qp->rq.wqe_shift) + | |
517 | (qp->sq.wqe_cnt << qp->sq.wqe_shift); | |
225c7b1f RD |
518 | if (qp->rq.wqe_shift > qp->sq.wqe_shift) { |
519 | qp->rq.offset = 0; | |
0e6e7416 | 520 | qp->sq.offset = qp->rq.wqe_cnt << qp->rq.wqe_shift; |
225c7b1f | 521 | } else { |
0e6e7416 | 522 | qp->rq.offset = qp->sq.wqe_cnt << qp->sq.wqe_shift; |
225c7b1f RD |
523 | qp->sq.offset = 0; |
524 | } | |
525 | ||
ea54b10c JM |
526 | cap->max_send_wr = qp->sq.max_post = |
527 | (qp->sq.wqe_cnt - qp->sq_spare_wqes) / qp->sq_max_wqes_per_wr; | |
cd155c1c RD |
528 | cap->max_send_sge = min(qp->sq.max_gs, |
529 | min(dev->dev->caps.max_sq_sg, | |
530 | dev->dev->caps.max_rq_sg)); | |
54e95f8d RD |
531 | /* We don't support inline sends for kernel QPs (yet) */ |
532 | cap->max_inline_data = 0; | |
225c7b1f RD |
533 | |
534 | return 0; | |
535 | } | |
536 | ||
83904132 JM |
537 | static int set_user_sq_size(struct mlx4_ib_dev *dev, |
538 | struct mlx4_ib_qp *qp, | |
2446304d EC |
539 | struct mlx4_ib_create_qp *ucmd) |
540 | { | |
83904132 JM |
541 | /* Sanity check SQ size before proceeding */ |
542 | if ((1 << ucmd->log_sq_bb_count) > dev->dev->caps.max_wqes || | |
543 | ucmd->log_sq_stride > | |
544 | ilog2(roundup_pow_of_two(dev->dev->caps.max_sq_desc_sz)) || | |
545 | ucmd->log_sq_stride < MLX4_IB_MIN_SQ_STRIDE) | |
546 | return -EINVAL; | |
547 | ||
0e6e7416 | 548 | qp->sq.wqe_cnt = 1 << ucmd->log_sq_bb_count; |
2446304d EC |
549 | qp->sq.wqe_shift = ucmd->log_sq_stride; |
550 | ||
0e6e7416 RD |
551 | qp->buf_size = (qp->rq.wqe_cnt << qp->rq.wqe_shift) + |
552 | (qp->sq.wqe_cnt << qp->sq.wqe_shift); | |
2446304d EC |
553 | |
554 | return 0; | |
555 | } | |
556 | ||
1ffeb2eb JM |
557 | static int alloc_proxy_bufs(struct ib_device *dev, struct mlx4_ib_qp *qp) |
558 | { | |
559 | int i; | |
560 | ||
561 | qp->sqp_proxy_rcv = | |
562 | kmalloc(sizeof (struct mlx4_ib_buf) * qp->rq.wqe_cnt, | |
563 | GFP_KERNEL); | |
564 | if (!qp->sqp_proxy_rcv) | |
565 | return -ENOMEM; | |
566 | for (i = 0; i < qp->rq.wqe_cnt; i++) { | |
567 | qp->sqp_proxy_rcv[i].addr = | |
568 | kmalloc(sizeof (struct mlx4_ib_proxy_sqp_hdr), | |
569 | GFP_KERNEL); | |
570 | if (!qp->sqp_proxy_rcv[i].addr) | |
571 | goto err; | |
572 | qp->sqp_proxy_rcv[i].map = | |
573 | ib_dma_map_single(dev, qp->sqp_proxy_rcv[i].addr, | |
574 | sizeof (struct mlx4_ib_proxy_sqp_hdr), | |
575 | DMA_FROM_DEVICE); | |
cc47d369 SO |
576 | if (ib_dma_mapping_error(dev, qp->sqp_proxy_rcv[i].map)) { |
577 | kfree(qp->sqp_proxy_rcv[i].addr); | |
578 | goto err; | |
579 | } | |
1ffeb2eb JM |
580 | } |
581 | return 0; | |
582 | ||
583 | err: | |
584 | while (i > 0) { | |
585 | --i; | |
586 | ib_dma_unmap_single(dev, qp->sqp_proxy_rcv[i].map, | |
587 | sizeof (struct mlx4_ib_proxy_sqp_hdr), | |
588 | DMA_FROM_DEVICE); | |
589 | kfree(qp->sqp_proxy_rcv[i].addr); | |
590 | } | |
591 | kfree(qp->sqp_proxy_rcv); | |
592 | qp->sqp_proxy_rcv = NULL; | |
593 | return -ENOMEM; | |
594 | } | |
595 | ||
596 | static void free_proxy_bufs(struct ib_device *dev, struct mlx4_ib_qp *qp) | |
597 | { | |
598 | int i; | |
599 | ||
600 | for (i = 0; i < qp->rq.wqe_cnt; i++) { | |
601 | ib_dma_unmap_single(dev, qp->sqp_proxy_rcv[i].map, | |
602 | sizeof (struct mlx4_ib_proxy_sqp_hdr), | |
603 | DMA_FROM_DEVICE); | |
604 | kfree(qp->sqp_proxy_rcv[i].addr); | |
605 | } | |
606 | kfree(qp->sqp_proxy_rcv); | |
607 | } | |
608 | ||
0a1405da SH |
609 | static int qp_has_rq(struct ib_qp_init_attr *attr) |
610 | { | |
611 | if (attr->qp_type == IB_QPT_XRC_INI || attr->qp_type == IB_QPT_XRC_TGT) | |
612 | return 0; | |
613 | ||
614 | return !attr->srq; | |
615 | } | |
616 | ||
99ec41d0 JM |
617 | static int qp0_enabled_vf(struct mlx4_dev *dev, int qpn) |
618 | { | |
619 | int i; | |
620 | for (i = 0; i < dev->caps.num_ports; i++) { | |
621 | if (qpn == dev->caps.qp0_proxy[i]) | |
622 | return !!dev->caps.qp0_qkey[i]; | |
623 | } | |
624 | return 0; | |
625 | } | |
626 | ||
7b59f0f9 EBE |
627 | static void mlx4_ib_free_qp_counter(struct mlx4_ib_dev *dev, |
628 | struct mlx4_ib_qp *qp) | |
629 | { | |
630 | mutex_lock(&dev->counters_table[qp->port - 1].mutex); | |
631 | mlx4_counter_free(dev->dev, qp->counter_index->index); | |
632 | list_del(&qp->counter_index->list); | |
633 | mutex_unlock(&dev->counters_table[qp->port - 1].mutex); | |
634 | ||
635 | kfree(qp->counter_index); | |
636 | qp->counter_index = NULL; | |
637 | } | |
638 | ||
225c7b1f RD |
639 | static int create_qp_common(struct mlx4_ib_dev *dev, struct ib_pd *pd, |
640 | struct ib_qp_init_attr *init_attr, | |
40f2287b JK |
641 | struct ib_udata *udata, int sqpn, struct mlx4_ib_qp **caller_qp, |
642 | gfp_t gfp) | |
225c7b1f | 643 | { |
a3cdcbfa | 644 | int qpn; |
225c7b1f | 645 | int err; |
73898db0 | 646 | struct ib_qp_cap backup_cap; |
1ffeb2eb JM |
647 | struct mlx4_ib_sqp *sqp; |
648 | struct mlx4_ib_qp *qp; | |
649 | enum mlx4_ib_qp_type qp_type = (enum mlx4_ib_qp_type) init_attr->qp_type; | |
35f05dab YH |
650 | struct mlx4_ib_cq *mcq; |
651 | unsigned long flags; | |
1ffeb2eb JM |
652 | |
653 | /* When tunneling special qps, we use a plain UD qp */ | |
654 | if (sqpn) { | |
655 | if (mlx4_is_mfunc(dev->dev) && | |
656 | (!mlx4_is_master(dev->dev) || | |
657 | !(init_attr->create_flags & MLX4_IB_SRIOV_SQP))) { | |
658 | if (init_attr->qp_type == IB_QPT_GSI) | |
659 | qp_type = MLX4_IB_QPT_PROXY_GSI; | |
99ec41d0 JM |
660 | else { |
661 | if (mlx4_is_master(dev->dev) || | |
662 | qp0_enabled_vf(dev->dev, sqpn)) | |
663 | qp_type = MLX4_IB_QPT_PROXY_SMI_OWNER; | |
664 | else | |
665 | qp_type = MLX4_IB_QPT_PROXY_SMI; | |
666 | } | |
1ffeb2eb JM |
667 | } |
668 | qpn = sqpn; | |
669 | /* add extra sg entry for tunneling */ | |
670 | init_attr->cap.max_recv_sge++; | |
671 | } else if (init_attr->create_flags & MLX4_IB_SRIOV_TUNNEL_QP) { | |
672 | struct mlx4_ib_qp_tunnel_init_attr *tnl_init = | |
673 | container_of(init_attr, | |
674 | struct mlx4_ib_qp_tunnel_init_attr, init_attr); | |
675 | if ((tnl_init->proxy_qp_type != IB_QPT_SMI && | |
676 | tnl_init->proxy_qp_type != IB_QPT_GSI) || | |
677 | !mlx4_is_master(dev->dev)) | |
678 | return -EINVAL; | |
679 | if (tnl_init->proxy_qp_type == IB_QPT_GSI) | |
680 | qp_type = MLX4_IB_QPT_TUN_GSI; | |
99ec41d0 JM |
681 | else if (tnl_init->slave == mlx4_master_func_num(dev->dev) || |
682 | mlx4_vf_smi_enabled(dev->dev, tnl_init->slave, | |
683 | tnl_init->port)) | |
1ffeb2eb JM |
684 | qp_type = MLX4_IB_QPT_TUN_SMI_OWNER; |
685 | else | |
686 | qp_type = MLX4_IB_QPT_TUN_SMI; | |
47605df9 JM |
687 | /* we are definitely in the PPF here, since we are creating |
688 | * tunnel QPs. base_tunnel_sqpn is therefore valid. */ | |
689 | qpn = dev->dev->phys_caps.base_tunnel_sqpn + 8 * tnl_init->slave | |
690 | + tnl_init->proxy_qp_type * 2 + tnl_init->port - 1; | |
1ffeb2eb JM |
691 | sqpn = qpn; |
692 | } | |
693 | ||
694 | if (!*caller_qp) { | |
695 | if (qp_type == MLX4_IB_QPT_SMI || qp_type == MLX4_IB_QPT_GSI || | |
696 | (qp_type & (MLX4_IB_QPT_PROXY_SMI | MLX4_IB_QPT_PROXY_SMI_OWNER | | |
697 | MLX4_IB_QPT_PROXY_GSI | MLX4_IB_QPT_TUN_SMI_OWNER))) { | |
6fcd8d0d | 698 | sqp = kzalloc(sizeof (struct mlx4_ib_sqp), gfp); |
1ffeb2eb JM |
699 | if (!sqp) |
700 | return -ENOMEM; | |
701 | qp = &sqp->qp; | |
2f5bb473 JM |
702 | qp->pri.vid = 0xFFFF; |
703 | qp->alt.vid = 0xFFFF; | |
1ffeb2eb | 704 | } else { |
6fcd8d0d | 705 | qp = kzalloc(sizeof (struct mlx4_ib_qp), gfp); |
1ffeb2eb JM |
706 | if (!qp) |
707 | return -ENOMEM; | |
2f5bb473 JM |
708 | qp->pri.vid = 0xFFFF; |
709 | qp->alt.vid = 0xFFFF; | |
1ffeb2eb JM |
710 | } |
711 | } else | |
712 | qp = *caller_qp; | |
713 | ||
714 | qp->mlx4_ib_qp_type = qp_type; | |
225c7b1f RD |
715 | |
716 | mutex_init(&qp->mutex); | |
717 | spin_lock_init(&qp->sq.lock); | |
718 | spin_lock_init(&qp->rq.lock); | |
fa417f7b | 719 | INIT_LIST_HEAD(&qp->gid_list); |
0ff1fb65 | 720 | INIT_LIST_HEAD(&qp->steering_rules); |
225c7b1f RD |
721 | |
722 | qp->state = IB_QPS_RESET; | |
ea54b10c JM |
723 | if (init_attr->sq_sig_type == IB_SIGNAL_ALL_WR) |
724 | qp->sq_signal_bits = cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE); | |
225c7b1f | 725 | |
0a1405da | 726 | err = set_rq_size(dev, &init_attr->cap, !!pd->uobject, qp_has_rq(init_attr), qp); |
225c7b1f RD |
727 | if (err) |
728 | goto err; | |
729 | ||
730 | if (pd->uobject) { | |
731 | struct mlx4_ib_create_qp ucmd; | |
732 | ||
733 | if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) { | |
734 | err = -EFAULT; | |
735 | goto err; | |
736 | } | |
737 | ||
0e6e7416 RD |
738 | qp->sq_no_prefetch = ucmd.sq_no_prefetch; |
739 | ||
83904132 | 740 | err = set_user_sq_size(dev, qp, &ucmd); |
2446304d EC |
741 | if (err) |
742 | goto err; | |
743 | ||
225c7b1f | 744 | qp->umem = ib_umem_get(pd->uobject->context, ucmd.buf_addr, |
cb9fbc5c | 745 | qp->buf_size, 0, 0); |
225c7b1f RD |
746 | if (IS_ERR(qp->umem)) { |
747 | err = PTR_ERR(qp->umem); | |
748 | goto err; | |
749 | } | |
750 | ||
751 | err = mlx4_mtt_init(dev->dev, ib_umem_page_count(qp->umem), | |
752 | ilog2(qp->umem->page_size), &qp->mtt); | |
753 | if (err) | |
754 | goto err_buf; | |
755 | ||
756 | err = mlx4_ib_umem_write_mtt(dev, &qp->mtt, qp->umem); | |
757 | if (err) | |
758 | goto err_mtt; | |
759 | ||
0a1405da | 760 | if (qp_has_rq(init_attr)) { |
02d89b87 RD |
761 | err = mlx4_ib_db_map_user(to_mucontext(pd->uobject->context), |
762 | ucmd.db_addr, &qp->db); | |
763 | if (err) | |
764 | goto err_mtt; | |
765 | } | |
225c7b1f | 766 | } else { |
0e6e7416 RD |
767 | qp->sq_no_prefetch = 0; |
768 | ||
b832be1e EC |
769 | if (init_attr->create_flags & IB_QP_CREATE_IPOIB_UD_LSO) |
770 | qp->flags |= MLX4_IB_QP_LSO; | |
771 | ||
c1c98501 MB |
772 | if (init_attr->create_flags & IB_QP_CREATE_NETIF_QP) { |
773 | if (dev->steering_support == | |
774 | MLX4_STEERING_MODE_DEVICE_MANAGED) | |
775 | qp->flags |= MLX4_IB_QP_NETIF; | |
776 | else | |
777 | goto err; | |
778 | } | |
779 | ||
73898db0 HA |
780 | memcpy(&backup_cap, &init_attr->cap, sizeof(backup_cap)); |
781 | err = set_kernel_sq_size(dev, &init_attr->cap, | |
782 | qp_type, qp, true); | |
2446304d EC |
783 | if (err) |
784 | goto err; | |
785 | ||
0a1405da | 786 | if (qp_has_rq(init_attr)) { |
40f2287b | 787 | err = mlx4_db_alloc(dev->dev, &qp->db, 0, gfp); |
02d89b87 RD |
788 | if (err) |
789 | goto err; | |
225c7b1f | 790 | |
02d89b87 RD |
791 | *qp->db.db = 0; |
792 | } | |
225c7b1f | 793 | |
73898db0 HA |
794 | if (mlx4_buf_alloc(dev->dev, qp->buf_size, qp->buf_size, |
795 | &qp->buf, gfp)) { | |
796 | memcpy(&init_attr->cap, &backup_cap, | |
797 | sizeof(backup_cap)); | |
798 | err = set_kernel_sq_size(dev, &init_attr->cap, qp_type, | |
799 | qp, false); | |
800 | if (err) | |
801 | goto err_db; | |
802 | ||
803 | if (mlx4_buf_alloc(dev->dev, qp->buf_size, | |
804 | PAGE_SIZE * 2, &qp->buf, gfp)) { | |
805 | err = -ENOMEM; | |
806 | goto err_db; | |
807 | } | |
225c7b1f RD |
808 | } |
809 | ||
810 | err = mlx4_mtt_init(dev->dev, qp->buf.npages, qp->buf.page_shift, | |
811 | &qp->mtt); | |
812 | if (err) | |
813 | goto err_buf; | |
814 | ||
40f2287b | 815 | err = mlx4_buf_write_mtt(dev->dev, &qp->mtt, &qp->buf, gfp); |
225c7b1f RD |
816 | if (err) |
817 | goto err_mtt; | |
818 | ||
ee370950 | 819 | qp->sq.wrid = kmalloc_array(qp->sq.wqe_cnt, sizeof(u64), |
9afc60dc | 820 | gfp | __GFP_NOWARN); |
0ef2f05c WW |
821 | if (!qp->sq.wrid) |
822 | qp->sq.wrid = __vmalloc(qp->sq.wqe_cnt * sizeof(u64), | |
823 | gfp, PAGE_KERNEL); | |
ee370950 | 824 | qp->rq.wrid = kmalloc_array(qp->rq.wqe_cnt, sizeof(u64), |
9afc60dc | 825 | gfp | __GFP_NOWARN); |
0ef2f05c WW |
826 | if (!qp->rq.wrid) |
827 | qp->rq.wrid = __vmalloc(qp->rq.wqe_cnt * sizeof(u64), | |
828 | gfp, PAGE_KERNEL); | |
225c7b1f RD |
829 | if (!qp->sq.wrid || !qp->rq.wrid) { |
830 | err = -ENOMEM; | |
831 | goto err_wrid; | |
832 | } | |
225c7b1f RD |
833 | } |
834 | ||
a3cdcbfa | 835 | if (sqpn) { |
1ffeb2eb JM |
836 | if (qp->mlx4_ib_qp_type & (MLX4_IB_QPT_PROXY_SMI_OWNER | |
837 | MLX4_IB_QPT_PROXY_SMI | MLX4_IB_QPT_PROXY_GSI)) { | |
838 | if (alloc_proxy_bufs(pd->device, qp)) { | |
839 | err = -ENOMEM; | |
840 | goto err_wrid; | |
841 | } | |
842 | } | |
a3cdcbfa | 843 | } else { |
ddae0349 EE |
844 | /* Raw packet QPNs may not have bits 6,7 set in their qp_num; |
845 | * otherwise, the WQE BlueFlame setup flow wrongly causes | |
846 | * VLAN insertion. */ | |
3987a2d3 | 847 | if (init_attr->qp_type == IB_QPT_RAW_PACKET) |
ddae0349 | 848 | err = mlx4_qp_reserve_range(dev->dev, 1, 1, &qpn, |
d57febe1 MB |
849 | (init_attr->cap.max_send_wr ? |
850 | MLX4_RESERVE_ETH_BF_QP : 0) | | |
851 | (init_attr->cap.max_recv_wr ? | |
852 | MLX4_RESERVE_A0_QP : 0)); | |
3987a2d3 | 853 | else |
c1c98501 MB |
854 | if (qp->flags & MLX4_IB_QP_NETIF) |
855 | err = mlx4_ib_steer_qp_alloc(dev, 1, &qpn); | |
856 | else | |
857 | err = mlx4_qp_reserve_range(dev->dev, 1, 1, | |
ddae0349 | 858 | &qpn, 0); |
a3cdcbfa | 859 | if (err) |
1ffeb2eb | 860 | goto err_proxy; |
a3cdcbfa YP |
861 | } |
862 | ||
fbfb6625 EBE |
863 | if (init_attr->create_flags & IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK) |
864 | qp->flags |= MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK; | |
865 | ||
40f2287b | 866 | err = mlx4_qp_alloc(dev->dev, qpn, &qp->mqp, gfp); |
225c7b1f | 867 | if (err) |
a3cdcbfa | 868 | goto err_qpn; |
225c7b1f | 869 | |
0a1405da SH |
870 | if (init_attr->qp_type == IB_QPT_XRC_TGT) |
871 | qp->mqp.qpn |= (1 << 23); | |
872 | ||
225c7b1f RD |
873 | /* |
874 | * Hardware wants QPN written in big-endian order (after | |
875 | * shifting) for send doorbell. Precompute this value to save | |
876 | * a little bit when posting sends. | |
877 | */ | |
878 | qp->doorbell_qpn = swab32(qp->mqp.qpn << 8); | |
879 | ||
225c7b1f | 880 | qp->mqp.event = mlx4_ib_qp_event; |
1ffeb2eb JM |
881 | if (!*caller_qp) |
882 | *caller_qp = qp; | |
35f05dab YH |
883 | |
884 | spin_lock_irqsave(&dev->reset_flow_resource_lock, flags); | |
885 | mlx4_ib_lock_cqs(to_mcq(init_attr->send_cq), | |
886 | to_mcq(init_attr->recv_cq)); | |
887 | /* Maintain device to QPs access, needed for further handling | |
888 | * via reset flow | |
889 | */ | |
890 | list_add_tail(&qp->qps_list, &dev->qp_list); | |
891 | /* Maintain CQ to QPs access, needed for further handling | |
892 | * via reset flow | |
893 | */ | |
894 | mcq = to_mcq(init_attr->send_cq); | |
895 | list_add_tail(&qp->cq_send_list, &mcq->send_qp_list); | |
896 | mcq = to_mcq(init_attr->recv_cq); | |
897 | list_add_tail(&qp->cq_recv_list, &mcq->recv_qp_list); | |
898 | mlx4_ib_unlock_cqs(to_mcq(init_attr->send_cq), | |
899 | to_mcq(init_attr->recv_cq)); | |
900 | spin_unlock_irqrestore(&dev->reset_flow_resource_lock, flags); | |
225c7b1f RD |
901 | return 0; |
902 | ||
a3cdcbfa | 903 | err_qpn: |
c1c98501 MB |
904 | if (!sqpn) { |
905 | if (qp->flags & MLX4_IB_QP_NETIF) | |
906 | mlx4_ib_steer_qp_free(dev, qpn, 1); | |
907 | else | |
908 | mlx4_qp_release_range(dev->dev, qpn, 1); | |
909 | } | |
1ffeb2eb JM |
910 | err_proxy: |
911 | if (qp->mlx4_ib_qp_type == MLX4_IB_QPT_PROXY_GSI) | |
912 | free_proxy_bufs(pd->device, qp); | |
225c7b1f | 913 | err_wrid: |
23f1b384 | 914 | if (pd->uobject) { |
0a1405da SH |
915 | if (qp_has_rq(init_attr)) |
916 | mlx4_ib_db_unmap_user(to_mucontext(pd->uobject->context), &qp->db); | |
23f1b384 | 917 | } else { |
0ef2f05c WW |
918 | kvfree(qp->sq.wrid); |
919 | kvfree(qp->rq.wrid); | |
225c7b1f RD |
920 | } |
921 | ||
922 | err_mtt: | |
923 | mlx4_mtt_cleanup(dev->dev, &qp->mtt); | |
924 | ||
925 | err_buf: | |
926 | if (pd->uobject) | |
927 | ib_umem_release(qp->umem); | |
928 | else | |
929 | mlx4_buf_free(dev->dev, qp->buf_size, &qp->buf); | |
930 | ||
931 | err_db: | |
0a1405da | 932 | if (!pd->uobject && qp_has_rq(init_attr)) |
6296883c | 933 | mlx4_db_free(dev->dev, &qp->db); |
225c7b1f RD |
934 | |
935 | err: | |
1ffeb2eb JM |
936 | if (!*caller_qp) |
937 | kfree(qp); | |
225c7b1f RD |
938 | return err; |
939 | } | |
940 | ||
941 | static enum mlx4_qp_state to_mlx4_state(enum ib_qp_state state) | |
942 | { | |
943 | switch (state) { | |
944 | case IB_QPS_RESET: return MLX4_QP_STATE_RST; | |
945 | case IB_QPS_INIT: return MLX4_QP_STATE_INIT; | |
946 | case IB_QPS_RTR: return MLX4_QP_STATE_RTR; | |
947 | case IB_QPS_RTS: return MLX4_QP_STATE_RTS; | |
948 | case IB_QPS_SQD: return MLX4_QP_STATE_SQD; | |
949 | case IB_QPS_SQE: return MLX4_QP_STATE_SQER; | |
950 | case IB_QPS_ERR: return MLX4_QP_STATE_ERR; | |
951 | default: return -1; | |
952 | } | |
953 | } | |
954 | ||
955 | static void mlx4_ib_lock_cqs(struct mlx4_ib_cq *send_cq, struct mlx4_ib_cq *recv_cq) | |
338a8fad | 956 | __acquires(&send_cq->lock) __acquires(&recv_cq->lock) |
225c7b1f | 957 | { |
338a8fad | 958 | if (send_cq == recv_cq) { |
35f05dab | 959 | spin_lock(&send_cq->lock); |
338a8fad RD |
960 | __acquire(&recv_cq->lock); |
961 | } else if (send_cq->mcq.cqn < recv_cq->mcq.cqn) { | |
35f05dab | 962 | spin_lock(&send_cq->lock); |
225c7b1f RD |
963 | spin_lock_nested(&recv_cq->lock, SINGLE_DEPTH_NESTING); |
964 | } else { | |
35f05dab | 965 | spin_lock(&recv_cq->lock); |
225c7b1f RD |
966 | spin_lock_nested(&send_cq->lock, SINGLE_DEPTH_NESTING); |
967 | } | |
968 | } | |
969 | ||
970 | static void mlx4_ib_unlock_cqs(struct mlx4_ib_cq *send_cq, struct mlx4_ib_cq *recv_cq) | |
338a8fad | 971 | __releases(&send_cq->lock) __releases(&recv_cq->lock) |
225c7b1f | 972 | { |
338a8fad RD |
973 | if (send_cq == recv_cq) { |
974 | __release(&recv_cq->lock); | |
35f05dab | 975 | spin_unlock(&send_cq->lock); |
338a8fad | 976 | } else if (send_cq->mcq.cqn < recv_cq->mcq.cqn) { |
225c7b1f | 977 | spin_unlock(&recv_cq->lock); |
35f05dab | 978 | spin_unlock(&send_cq->lock); |
225c7b1f RD |
979 | } else { |
980 | spin_unlock(&send_cq->lock); | |
35f05dab | 981 | spin_unlock(&recv_cq->lock); |
225c7b1f RD |
982 | } |
983 | } | |
984 | ||
fa417f7b EC |
985 | static void del_gid_entries(struct mlx4_ib_qp *qp) |
986 | { | |
987 | struct mlx4_ib_gid_entry *ge, *tmp; | |
988 | ||
989 | list_for_each_entry_safe(ge, tmp, &qp->gid_list, list) { | |
990 | list_del(&ge->list); | |
991 | kfree(ge); | |
992 | } | |
993 | } | |
994 | ||
0a1405da SH |
995 | static struct mlx4_ib_pd *get_pd(struct mlx4_ib_qp *qp) |
996 | { | |
997 | if (qp->ibqp.qp_type == IB_QPT_XRC_TGT) | |
998 | return to_mpd(to_mxrcd(qp->ibqp.xrcd)->pd); | |
999 | else | |
1000 | return to_mpd(qp->ibqp.pd); | |
1001 | } | |
1002 | ||
1003 | static void get_cqs(struct mlx4_ib_qp *qp, | |
1004 | struct mlx4_ib_cq **send_cq, struct mlx4_ib_cq **recv_cq) | |
1005 | { | |
1006 | switch (qp->ibqp.qp_type) { | |
1007 | case IB_QPT_XRC_TGT: | |
1008 | *send_cq = to_mcq(to_mxrcd(qp->ibqp.xrcd)->cq); | |
1009 | *recv_cq = *send_cq; | |
1010 | break; | |
1011 | case IB_QPT_XRC_INI: | |
1012 | *send_cq = to_mcq(qp->ibqp.send_cq); | |
1013 | *recv_cq = *send_cq; | |
1014 | break; | |
1015 | default: | |
1016 | *send_cq = to_mcq(qp->ibqp.send_cq); | |
1017 | *recv_cq = to_mcq(qp->ibqp.recv_cq); | |
1018 | break; | |
1019 | } | |
1020 | } | |
1021 | ||
225c7b1f RD |
1022 | static void destroy_qp_common(struct mlx4_ib_dev *dev, struct mlx4_ib_qp *qp, |
1023 | int is_user) | |
1024 | { | |
1025 | struct mlx4_ib_cq *send_cq, *recv_cq; | |
35f05dab | 1026 | unsigned long flags; |
225c7b1f | 1027 | |
2f5bb473 | 1028 | if (qp->state != IB_QPS_RESET) { |
225c7b1f RD |
1029 | if (mlx4_qp_modify(dev->dev, NULL, to_mlx4_state(qp->state), |
1030 | MLX4_QP_STATE_RST, NULL, 0, 0, &qp->mqp)) | |
987c8f8f | 1031 | pr_warn("modify QP %06x to RESET failed.\n", |
225c7b1f | 1032 | qp->mqp.qpn); |
25476b02 | 1033 | if (qp->pri.smac || (!qp->pri.smac && qp->pri.smac_port)) { |
2f5bb473 JM |
1034 | mlx4_unregister_mac(dev->dev, qp->pri.smac_port, qp->pri.smac); |
1035 | qp->pri.smac = 0; | |
25476b02 | 1036 | qp->pri.smac_port = 0; |
2f5bb473 JM |
1037 | } |
1038 | if (qp->alt.smac) { | |
1039 | mlx4_unregister_mac(dev->dev, qp->alt.smac_port, qp->alt.smac); | |
1040 | qp->alt.smac = 0; | |
1041 | } | |
1042 | if (qp->pri.vid < 0x1000) { | |
1043 | mlx4_unregister_vlan(dev->dev, qp->pri.vlan_port, qp->pri.vid); | |
1044 | qp->pri.vid = 0xFFFF; | |
1045 | qp->pri.candidate_vid = 0xFFFF; | |
1046 | qp->pri.update_vid = 0; | |
1047 | } | |
1048 | if (qp->alt.vid < 0x1000) { | |
1049 | mlx4_unregister_vlan(dev->dev, qp->alt.vlan_port, qp->alt.vid); | |
1050 | qp->alt.vid = 0xFFFF; | |
1051 | qp->alt.candidate_vid = 0xFFFF; | |
1052 | qp->alt.update_vid = 0; | |
1053 | } | |
1054 | } | |
225c7b1f | 1055 | |
0a1405da | 1056 | get_cqs(qp, &send_cq, &recv_cq); |
225c7b1f | 1057 | |
35f05dab | 1058 | spin_lock_irqsave(&dev->reset_flow_resource_lock, flags); |
225c7b1f RD |
1059 | mlx4_ib_lock_cqs(send_cq, recv_cq); |
1060 | ||
35f05dab YH |
1061 | /* del from lists under both locks above to protect reset flow paths */ |
1062 | list_del(&qp->qps_list); | |
1063 | list_del(&qp->cq_send_list); | |
1064 | list_del(&qp->cq_recv_list); | |
225c7b1f RD |
1065 | if (!is_user) { |
1066 | __mlx4_ib_cq_clean(recv_cq, qp->mqp.qpn, | |
1067 | qp->ibqp.srq ? to_msrq(qp->ibqp.srq): NULL); | |
1068 | if (send_cq != recv_cq) | |
1069 | __mlx4_ib_cq_clean(send_cq, qp->mqp.qpn, NULL); | |
1070 | } | |
1071 | ||
1072 | mlx4_qp_remove(dev->dev, &qp->mqp); | |
1073 | ||
1074 | mlx4_ib_unlock_cqs(send_cq, recv_cq); | |
35f05dab | 1075 | spin_unlock_irqrestore(&dev->reset_flow_resource_lock, flags); |
225c7b1f RD |
1076 | |
1077 | mlx4_qp_free(dev->dev, &qp->mqp); | |
a3cdcbfa | 1078 | |
c1c98501 MB |
1079 | if (!is_sqp(dev, qp) && !is_tunnel_qp(dev, qp)) { |
1080 | if (qp->flags & MLX4_IB_QP_NETIF) | |
1081 | mlx4_ib_steer_qp_free(dev, qp->mqp.qpn, 1); | |
1082 | else | |
1083 | mlx4_qp_release_range(dev->dev, qp->mqp.qpn, 1); | |
1084 | } | |
a3cdcbfa | 1085 | |
225c7b1f RD |
1086 | mlx4_mtt_cleanup(dev->dev, &qp->mtt); |
1087 | ||
1088 | if (is_user) { | |
0a1405da | 1089 | if (qp->rq.wqe_cnt) |
02d89b87 RD |
1090 | mlx4_ib_db_unmap_user(to_mucontext(qp->ibqp.uobject->context), |
1091 | &qp->db); | |
225c7b1f RD |
1092 | ib_umem_release(qp->umem); |
1093 | } else { | |
0ef2f05c WW |
1094 | kvfree(qp->sq.wrid); |
1095 | kvfree(qp->rq.wrid); | |
1ffeb2eb JM |
1096 | if (qp->mlx4_ib_qp_type & (MLX4_IB_QPT_PROXY_SMI_OWNER | |
1097 | MLX4_IB_QPT_PROXY_SMI | MLX4_IB_QPT_PROXY_GSI)) | |
1098 | free_proxy_bufs(&dev->ib_dev, qp); | |
225c7b1f | 1099 | mlx4_buf_free(dev->dev, qp->buf_size, &qp->buf); |
0a1405da | 1100 | if (qp->rq.wqe_cnt) |
6296883c | 1101 | mlx4_db_free(dev->dev, &qp->db); |
225c7b1f | 1102 | } |
fa417f7b EC |
1103 | |
1104 | del_gid_entries(qp); | |
225c7b1f RD |
1105 | } |
1106 | ||
47605df9 JM |
1107 | static u32 get_sqp_num(struct mlx4_ib_dev *dev, struct ib_qp_init_attr *attr) |
1108 | { | |
1109 | /* Native or PPF */ | |
1110 | if (!mlx4_is_mfunc(dev->dev) || | |
1111 | (mlx4_is_master(dev->dev) && | |
1112 | attr->create_flags & MLX4_IB_SRIOV_SQP)) { | |
1113 | return dev->dev->phys_caps.base_sqpn + | |
1114 | (attr->qp_type == IB_QPT_SMI ? 0 : 2) + | |
1115 | attr->port_num - 1; | |
1116 | } | |
1117 | /* PF or VF -- creating proxies */ | |
1118 | if (attr->qp_type == IB_QPT_SMI) | |
1119 | return dev->dev->caps.qp0_proxy[attr->port_num - 1]; | |
1120 | else | |
1121 | return dev->dev->caps.qp1_proxy[attr->port_num - 1]; | |
1122 | } | |
1123 | ||
e1b866c6 MS |
1124 | static struct ib_qp *_mlx4_ib_create_qp(struct ib_pd *pd, |
1125 | struct ib_qp_init_attr *init_attr, | |
1126 | struct ib_udata *udata) | |
225c7b1f | 1127 | { |
1ffeb2eb | 1128 | struct mlx4_ib_qp *qp = NULL; |
225c7b1f | 1129 | int err; |
fbfb6625 | 1130 | int sup_u_create_flags = MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK; |
0a1405da | 1131 | u16 xrcdn = 0; |
40f2287b | 1132 | gfp_t gfp; |
225c7b1f | 1133 | |
40f2287b JK |
1134 | gfp = (init_attr->create_flags & MLX4_IB_QP_CREATE_USE_GFP_NOIO) ? |
1135 | GFP_NOIO : GFP_KERNEL; | |
521e575b | 1136 | /* |
1ffeb2eb JM |
1137 | * We only support LSO, vendor flag1, and multicast loopback blocking, |
1138 | * and only for kernel UD QPs. | |
521e575b | 1139 | */ |
1ffeb2eb JM |
1140 | if (init_attr->create_flags & ~(MLX4_IB_QP_LSO | |
1141 | MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK | | |
c1c98501 MB |
1142 | MLX4_IB_SRIOV_TUNNEL_QP | |
1143 | MLX4_IB_SRIOV_SQP | | |
40f2287b | 1144 | MLX4_IB_QP_NETIF | |
e1b866c6 | 1145 | MLX4_IB_QP_CREATE_ROCE_V2_GSI | |
40f2287b | 1146 | MLX4_IB_QP_CREATE_USE_GFP_NOIO)) |
b832be1e | 1147 | return ERR_PTR(-EINVAL); |
521e575b | 1148 | |
c1c98501 MB |
1149 | if (init_attr->create_flags & IB_QP_CREATE_NETIF_QP) { |
1150 | if (init_attr->qp_type != IB_QPT_UD) | |
1151 | return ERR_PTR(-EINVAL); | |
1152 | } | |
1153 | ||
e1b866c6 MS |
1154 | if (init_attr->create_flags) { |
1155 | if (udata && init_attr->create_flags & ~(sup_u_create_flags)) | |
1156 | return ERR_PTR(-EINVAL); | |
1157 | ||
1158 | if ((init_attr->create_flags & ~(MLX4_IB_SRIOV_SQP | | |
1159 | MLX4_IB_QP_CREATE_USE_GFP_NOIO | | |
1160 | MLX4_IB_QP_CREATE_ROCE_V2_GSI | | |
1161 | MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK) && | |
1162 | init_attr->qp_type != IB_QPT_UD) || | |
1163 | (init_attr->create_flags & MLX4_IB_SRIOV_SQP && | |
1164 | init_attr->qp_type > IB_QPT_GSI) || | |
1165 | (init_attr->create_flags & MLX4_IB_QP_CREATE_ROCE_V2_GSI && | |
1166 | init_attr->qp_type != IB_QPT_GSI)) | |
1167 | return ERR_PTR(-EINVAL); | |
1168 | } | |
b846f25a | 1169 | |
225c7b1f | 1170 | switch (init_attr->qp_type) { |
0a1405da SH |
1171 | case IB_QPT_XRC_TGT: |
1172 | pd = to_mxrcd(init_attr->xrcd)->pd; | |
1173 | xrcdn = to_mxrcd(init_attr->xrcd)->xrcdn; | |
1174 | init_attr->send_cq = to_mxrcd(init_attr->xrcd)->cq; | |
1175 | /* fall through */ | |
1176 | case IB_QPT_XRC_INI: | |
1177 | if (!(to_mdev(pd->device)->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC)) | |
1178 | return ERR_PTR(-ENOSYS); | |
1179 | init_attr->recv_cq = init_attr->send_cq; | |
1180 | /* fall through */ | |
225c7b1f RD |
1181 | case IB_QPT_RC: |
1182 | case IB_QPT_UC: | |
3987a2d3 | 1183 | case IB_QPT_RAW_PACKET: |
40f2287b | 1184 | qp = kzalloc(sizeof *qp, gfp); |
225c7b1f RD |
1185 | if (!qp) |
1186 | return ERR_PTR(-ENOMEM); | |
2f5bb473 JM |
1187 | qp->pri.vid = 0xFFFF; |
1188 | qp->alt.vid = 0xFFFF; | |
1ffeb2eb JM |
1189 | /* fall through */ |
1190 | case IB_QPT_UD: | |
1191 | { | |
1192 | err = create_qp_common(to_mdev(pd->device), pd, init_attr, | |
40f2287b | 1193 | udata, 0, &qp, gfp); |
5b420d9c DB |
1194 | if (err) { |
1195 | kfree(qp); | |
225c7b1f | 1196 | return ERR_PTR(err); |
5b420d9c | 1197 | } |
225c7b1f RD |
1198 | |
1199 | qp->ibqp.qp_num = qp->mqp.qpn; | |
0a1405da | 1200 | qp->xrcdn = xrcdn; |
225c7b1f RD |
1201 | |
1202 | break; | |
1203 | } | |
1204 | case IB_QPT_SMI: | |
1205 | case IB_QPT_GSI: | |
1206 | { | |
e1b866c6 MS |
1207 | int sqpn; |
1208 | ||
225c7b1f | 1209 | /* Userspace is not allowed to create special QPs: */ |
0a1405da | 1210 | if (udata) |
225c7b1f | 1211 | return ERR_PTR(-EINVAL); |
e1b866c6 MS |
1212 | if (init_attr->create_flags & MLX4_IB_QP_CREATE_ROCE_V2_GSI) { |
1213 | int res = mlx4_qp_reserve_range(to_mdev(pd->device)->dev, 1, 1, &sqpn, 0); | |
1214 | ||
1215 | if (res) | |
1216 | return ERR_PTR(res); | |
1217 | } else { | |
1218 | sqpn = get_sqp_num(to_mdev(pd->device), init_attr); | |
1219 | } | |
225c7b1f | 1220 | |
0a1405da | 1221 | err = create_qp_common(to_mdev(pd->device), pd, init_attr, udata, |
e1b866c6 | 1222 | sqpn, |
40f2287b | 1223 | &qp, gfp); |
1ffeb2eb | 1224 | if (err) |
225c7b1f | 1225 | return ERR_PTR(err); |
225c7b1f RD |
1226 | |
1227 | qp->port = init_attr->port_num; | |
e1b866c6 MS |
1228 | qp->ibqp.qp_num = init_attr->qp_type == IB_QPT_SMI ? 0 : |
1229 | init_attr->create_flags & MLX4_IB_QP_CREATE_ROCE_V2_GSI ? sqpn : 1; | |
225c7b1f RD |
1230 | break; |
1231 | } | |
1232 | default: | |
1233 | /* Don't support raw QPs */ | |
1234 | return ERR_PTR(-EINVAL); | |
1235 | } | |
1236 | ||
1237 | return &qp->ibqp; | |
1238 | } | |
1239 | ||
e1b866c6 MS |
1240 | struct ib_qp *mlx4_ib_create_qp(struct ib_pd *pd, |
1241 | struct ib_qp_init_attr *init_attr, | |
1242 | struct ib_udata *udata) { | |
1243 | struct ib_device *device = pd ? pd->device : init_attr->xrcd->device; | |
1244 | struct ib_qp *ibqp; | |
1245 | struct mlx4_ib_dev *dev = to_mdev(device); | |
1246 | ||
1247 | ibqp = _mlx4_ib_create_qp(pd, init_attr, udata); | |
1248 | ||
1249 | if (!IS_ERR(ibqp) && | |
1250 | (init_attr->qp_type == IB_QPT_GSI) && | |
1251 | !(init_attr->create_flags & MLX4_IB_QP_CREATE_ROCE_V2_GSI)) { | |
1252 | struct mlx4_ib_sqp *sqp = to_msqp((to_mqp(ibqp))); | |
1253 | int is_eth = rdma_cap_eth_ah(&dev->ib_dev, init_attr->port_num); | |
1254 | ||
1255 | if (is_eth && | |
1256 | dev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2) { | |
1257 | init_attr->create_flags |= MLX4_IB_QP_CREATE_ROCE_V2_GSI; | |
1258 | sqp->roce_v2_gsi = ib_create_qp(pd, init_attr); | |
1259 | ||
1260 | if (IS_ERR(sqp->roce_v2_gsi)) { | |
1261 | pr_err("Failed to create GSI QP for RoCEv2 (%ld)\n", PTR_ERR(sqp->roce_v2_gsi)); | |
1262 | sqp->roce_v2_gsi = NULL; | |
1263 | } else { | |
1264 | sqp = to_msqp(to_mqp(sqp->roce_v2_gsi)); | |
1265 | sqp->qp.flags |= MLX4_IB_ROCE_V2_GSI_QP; | |
1266 | } | |
1267 | ||
1268 | init_attr->create_flags &= ~MLX4_IB_QP_CREATE_ROCE_V2_GSI; | |
1269 | } | |
1270 | } | |
1271 | return ibqp; | |
1272 | } | |
1273 | ||
1274 | static int _mlx4_ib_destroy_qp(struct ib_qp *qp) | |
225c7b1f RD |
1275 | { |
1276 | struct mlx4_ib_dev *dev = to_mdev(qp->device); | |
1277 | struct mlx4_ib_qp *mqp = to_mqp(qp); | |
0a1405da | 1278 | struct mlx4_ib_pd *pd; |
225c7b1f RD |
1279 | |
1280 | if (is_qp0(dev, mqp)) | |
1281 | mlx4_CLOSE_PORT(dev->dev, mqp->port); | |
1282 | ||
9433c188 MB |
1283 | if (dev->qp1_proxy[mqp->port - 1] == mqp) { |
1284 | mutex_lock(&dev->qp1_proxy_lock[mqp->port - 1]); | |
1285 | dev->qp1_proxy[mqp->port - 1] = NULL; | |
1286 | mutex_unlock(&dev->qp1_proxy_lock[mqp->port - 1]); | |
1287 | } | |
1288 | ||
7b59f0f9 EBE |
1289 | if (mqp->counter_index) |
1290 | mlx4_ib_free_qp_counter(dev, mqp); | |
1291 | ||
0a1405da SH |
1292 | pd = get_pd(mqp); |
1293 | destroy_qp_common(dev, mqp, !!pd->ibpd.uobject); | |
225c7b1f RD |
1294 | |
1295 | if (is_sqp(dev, mqp)) | |
1296 | kfree(to_msqp(mqp)); | |
1297 | else | |
1298 | kfree(mqp); | |
1299 | ||
1300 | return 0; | |
1301 | } | |
1302 | ||
e1b866c6 MS |
1303 | int mlx4_ib_destroy_qp(struct ib_qp *qp) |
1304 | { | |
1305 | struct mlx4_ib_qp *mqp = to_mqp(qp); | |
1306 | ||
1307 | if (mqp->mlx4_ib_qp_type == MLX4_IB_QPT_GSI) { | |
1308 | struct mlx4_ib_sqp *sqp = to_msqp(mqp); | |
1309 | ||
1310 | if (sqp->roce_v2_gsi) | |
1311 | ib_destroy_qp(sqp->roce_v2_gsi); | |
1312 | } | |
1313 | ||
1314 | return _mlx4_ib_destroy_qp(qp); | |
1315 | } | |
1316 | ||
1ffeb2eb | 1317 | static int to_mlx4_st(struct mlx4_ib_dev *dev, enum mlx4_ib_qp_type type) |
225c7b1f RD |
1318 | { |
1319 | switch (type) { | |
1ffeb2eb JM |
1320 | case MLX4_IB_QPT_RC: return MLX4_QP_ST_RC; |
1321 | case MLX4_IB_QPT_UC: return MLX4_QP_ST_UC; | |
1322 | case MLX4_IB_QPT_UD: return MLX4_QP_ST_UD; | |
1323 | case MLX4_IB_QPT_XRC_INI: | |
1324 | case MLX4_IB_QPT_XRC_TGT: return MLX4_QP_ST_XRC; | |
1325 | case MLX4_IB_QPT_SMI: | |
1326 | case MLX4_IB_QPT_GSI: | |
1327 | case MLX4_IB_QPT_RAW_PACKET: return MLX4_QP_ST_MLX; | |
1328 | ||
1329 | case MLX4_IB_QPT_PROXY_SMI_OWNER: | |
1330 | case MLX4_IB_QPT_TUN_SMI_OWNER: return (mlx4_is_mfunc(dev->dev) ? | |
1331 | MLX4_QP_ST_MLX : -1); | |
1332 | case MLX4_IB_QPT_PROXY_SMI: | |
1333 | case MLX4_IB_QPT_TUN_SMI: | |
1334 | case MLX4_IB_QPT_PROXY_GSI: | |
1335 | case MLX4_IB_QPT_TUN_GSI: return (mlx4_is_mfunc(dev->dev) ? | |
1336 | MLX4_QP_ST_UD : -1); | |
1337 | default: return -1; | |
225c7b1f RD |
1338 | } |
1339 | } | |
1340 | ||
65adfa91 | 1341 | static __be32 to_mlx4_access_flags(struct mlx4_ib_qp *qp, const struct ib_qp_attr *attr, |
225c7b1f RD |
1342 | int attr_mask) |
1343 | { | |
1344 | u8 dest_rd_atomic; | |
1345 | u32 access_flags; | |
1346 | u32 hw_access_flags = 0; | |
1347 | ||
1348 | if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC) | |
1349 | dest_rd_atomic = attr->max_dest_rd_atomic; | |
1350 | else | |
1351 | dest_rd_atomic = qp->resp_depth; | |
1352 | ||
1353 | if (attr_mask & IB_QP_ACCESS_FLAGS) | |
1354 | access_flags = attr->qp_access_flags; | |
1355 | else | |
1356 | access_flags = qp->atomic_rd_en; | |
1357 | ||
1358 | if (!dest_rd_atomic) | |
1359 | access_flags &= IB_ACCESS_REMOTE_WRITE; | |
1360 | ||
1361 | if (access_flags & IB_ACCESS_REMOTE_READ) | |
1362 | hw_access_flags |= MLX4_QP_BIT_RRE; | |
1363 | if (access_flags & IB_ACCESS_REMOTE_ATOMIC) | |
1364 | hw_access_flags |= MLX4_QP_BIT_RAE; | |
1365 | if (access_flags & IB_ACCESS_REMOTE_WRITE) | |
1366 | hw_access_flags |= MLX4_QP_BIT_RWE; | |
1367 | ||
1368 | return cpu_to_be32(hw_access_flags); | |
1369 | } | |
1370 | ||
65adfa91 | 1371 | static void store_sqp_attrs(struct mlx4_ib_sqp *sqp, const struct ib_qp_attr *attr, |
225c7b1f RD |
1372 | int attr_mask) |
1373 | { | |
1374 | if (attr_mask & IB_QP_PKEY_INDEX) | |
1375 | sqp->pkey_index = attr->pkey_index; | |
1376 | if (attr_mask & IB_QP_QKEY) | |
1377 | sqp->qkey = attr->qkey; | |
1378 | if (attr_mask & IB_QP_SQ_PSN) | |
1379 | sqp->send_psn = attr->sq_psn; | |
1380 | } | |
1381 | ||
1382 | static void mlx4_set_sched(struct mlx4_qp_path *path, u8 port) | |
1383 | { | |
1384 | path->sched_queue = (path->sched_queue & 0xbf) | ((port - 1) << 6); | |
1385 | } | |
1386 | ||
297e0dad MS |
1387 | static int _mlx4_set_path(struct mlx4_ib_dev *dev, const struct ib_ah_attr *ah, |
1388 | u64 smac, u16 vlan_tag, struct mlx4_qp_path *path, | |
2f5bb473 | 1389 | struct mlx4_roce_smac_vlan_info *smac_info, u8 port) |
225c7b1f | 1390 | { |
fa417f7b EC |
1391 | int is_eth = rdma_port_get_link_layer(&dev->ib_dev, port) == |
1392 | IB_LINK_LAYER_ETHERNET; | |
4c3eb3ca | 1393 | int vidx; |
297e0dad | 1394 | int smac_index; |
2f5bb473 | 1395 | int err; |
297e0dad | 1396 | |
fa417f7b | 1397 | |
225c7b1f RD |
1398 | path->grh_mylmc = ah->src_path_bits & 0x7f; |
1399 | path->rlid = cpu_to_be16(ah->dlid); | |
1400 | if (ah->static_rate) { | |
1401 | path->static_rate = ah->static_rate + MLX4_STAT_RATE_OFFSET; | |
1402 | while (path->static_rate > IB_RATE_2_5_GBPS + MLX4_STAT_RATE_OFFSET && | |
1403 | !(1 << path->static_rate & dev->dev->caps.stat_rate_support)) | |
1404 | --path->static_rate; | |
1405 | } else | |
1406 | path->static_rate = 0; | |
225c7b1f RD |
1407 | |
1408 | if (ah->ah_flags & IB_AH_GRH) { | |
5070cd22 MS |
1409 | int real_sgid_index = mlx4_ib_gid_index_to_real_index(dev, |
1410 | port, | |
1411 | ah->grh.sgid_index); | |
1412 | ||
1413 | if (real_sgid_index >= dev->dev->caps.gid_table_len[port]) { | |
987c8f8f | 1414 | pr_err("sgid_index (%u) too large. max is %d\n", |
5070cd22 | 1415 | real_sgid_index, dev->dev->caps.gid_table_len[port] - 1); |
225c7b1f RD |
1416 | return -1; |
1417 | } | |
1418 | ||
1419 | path->grh_mylmc |= 1 << 7; | |
5070cd22 | 1420 | path->mgid_index = real_sgid_index; |
225c7b1f RD |
1421 | path->hop_limit = ah->grh.hop_limit; |
1422 | path->tclass_flowlabel = | |
1423 | cpu_to_be32((ah->grh.traffic_class << 20) | | |
1424 | (ah->grh.flow_label)); | |
1425 | memcpy(path->rgid, ah->grh.dgid.raw, 16); | |
1426 | } | |
1427 | ||
fa417f7b EC |
1428 | if (is_eth) { |
1429 | if (!(ah->ah_flags & IB_AH_GRH)) | |
1430 | return -1; | |
1431 | ||
2f5bb473 JM |
1432 | path->sched_queue = MLX4_IB_DEFAULT_SCHED_QUEUE | |
1433 | ((port - 1) << 6) | ((ah->sl & 7) << 3); | |
4c3eb3ca | 1434 | |
297e0dad | 1435 | path->feup |= MLX4_FEUP_FORCE_ETH_UP; |
4c3eb3ca | 1436 | if (vlan_tag < 0x1000) { |
2f5bb473 JM |
1437 | if (smac_info->vid < 0x1000) { |
1438 | /* both valid vlan ids */ | |
1439 | if (smac_info->vid != vlan_tag) { | |
1440 | /* different VIDs. unreg old and reg new */ | |
1441 | err = mlx4_register_vlan(dev->dev, port, vlan_tag, &vidx); | |
1442 | if (err) | |
1443 | return err; | |
1444 | smac_info->candidate_vid = vlan_tag; | |
1445 | smac_info->candidate_vlan_index = vidx; | |
1446 | smac_info->candidate_vlan_port = port; | |
1447 | smac_info->update_vid = 1; | |
1448 | path->vlan_index = vidx; | |
1449 | } else { | |
1450 | path->vlan_index = smac_info->vlan_index; | |
1451 | } | |
1452 | } else { | |
1453 | /* no current vlan tag in qp */ | |
1454 | err = mlx4_register_vlan(dev->dev, port, vlan_tag, &vidx); | |
1455 | if (err) | |
1456 | return err; | |
1457 | smac_info->candidate_vid = vlan_tag; | |
1458 | smac_info->candidate_vlan_index = vidx; | |
1459 | smac_info->candidate_vlan_port = port; | |
1460 | smac_info->update_vid = 1; | |
1461 | path->vlan_index = vidx; | |
1462 | } | |
297e0dad | 1463 | path->feup |= MLX4_FVL_FORCE_ETH_VLAN; |
2f5bb473 JM |
1464 | path->fl = 1 << 6; |
1465 | } else { | |
1466 | /* have current vlan tag. unregister it at modify-qp success */ | |
1467 | if (smac_info->vid < 0x1000) { | |
1468 | smac_info->candidate_vid = 0xFFFF; | |
1469 | smac_info->update_vid = 1; | |
1470 | } | |
4c3eb3ca | 1471 | } |
2f5bb473 JM |
1472 | |
1473 | /* get smac_index for RoCE use. | |
1474 | * If no smac was yet assigned, register one. | |
1475 | * If one was already assigned, but the new mac differs, | |
1476 | * unregister the old one and register the new one. | |
1477 | */ | |
25476b02 JM |
1478 | if ((!smac_info->smac && !smac_info->smac_port) || |
1479 | smac_info->smac != smac) { | |
2f5bb473 JM |
1480 | /* register candidate now, unreg if needed, after success */ |
1481 | smac_index = mlx4_register_mac(dev->dev, port, smac); | |
1482 | if (smac_index >= 0) { | |
1483 | smac_info->candidate_smac_index = smac_index; | |
1484 | smac_info->candidate_smac = smac; | |
1485 | smac_info->candidate_smac_port = port; | |
1486 | } else { | |
1487 | return -EINVAL; | |
1488 | } | |
1489 | } else { | |
1490 | smac_index = smac_info->smac_index; | |
1491 | } | |
1492 | ||
1493 | memcpy(path->dmac, ah->dmac, 6); | |
1494 | path->ackto = MLX4_IB_LINK_TYPE_ETH; | |
1495 | /* put MAC table smac index for IBoE */ | |
1496 | path->grh_mylmc = (u8) (smac_index) | 0x80; | |
1497 | } else { | |
4c3eb3ca EC |
1498 | path->sched_queue = MLX4_IB_DEFAULT_SCHED_QUEUE | |
1499 | ((port - 1) << 6) | ((ah->sl & 0xf) << 2); | |
2f5bb473 | 1500 | } |
fa417f7b | 1501 | |
225c7b1f RD |
1502 | return 0; |
1503 | } | |
1504 | ||
297e0dad MS |
1505 | static int mlx4_set_path(struct mlx4_ib_dev *dev, const struct ib_qp_attr *qp, |
1506 | enum ib_qp_attr_mask qp_attr_mask, | |
2f5bb473 | 1507 | struct mlx4_ib_qp *mqp, |
dbf727de MB |
1508 | struct mlx4_qp_path *path, u8 port, |
1509 | u16 vlan_id, u8 *smac) | |
297e0dad MS |
1510 | { |
1511 | return _mlx4_set_path(dev, &qp->ah_attr, | |
dbf727de MB |
1512 | mlx4_mac_to_u64(smac), |
1513 | vlan_id, | |
2f5bb473 | 1514 | path, &mqp->pri, port); |
297e0dad MS |
1515 | } |
1516 | ||
1517 | static int mlx4_set_alt_path(struct mlx4_ib_dev *dev, | |
1518 | const struct ib_qp_attr *qp, | |
1519 | enum ib_qp_attr_mask qp_attr_mask, | |
2f5bb473 | 1520 | struct mlx4_ib_qp *mqp, |
297e0dad MS |
1521 | struct mlx4_qp_path *path, u8 port) |
1522 | { | |
1523 | return _mlx4_set_path(dev, &qp->alt_ah_attr, | |
dbf727de MB |
1524 | 0, |
1525 | 0xffff, | |
2f5bb473 | 1526 | path, &mqp->alt, port); |
297e0dad MS |
1527 | } |
1528 | ||
fa417f7b EC |
1529 | static void update_mcg_macs(struct mlx4_ib_dev *dev, struct mlx4_ib_qp *qp) |
1530 | { | |
1531 | struct mlx4_ib_gid_entry *ge, *tmp; | |
1532 | ||
1533 | list_for_each_entry_safe(ge, tmp, &qp->gid_list, list) { | |
1534 | if (!ge->added && mlx4_ib_add_mc(dev, qp, &ge->gid)) { | |
1535 | ge->added = 1; | |
1536 | ge->port = qp->port; | |
1537 | } | |
1538 | } | |
1539 | } | |
1540 | ||
dbf727de MB |
1541 | static int handle_eth_ud_smac_index(struct mlx4_ib_dev *dev, |
1542 | struct mlx4_ib_qp *qp, | |
2f5bb473 JM |
1543 | struct mlx4_qp_context *context) |
1544 | { | |
2f5bb473 JM |
1545 | u64 u64_mac; |
1546 | int smac_index; | |
1547 | ||
3e0629cb | 1548 | u64_mac = atomic64_read(&dev->iboe.mac[qp->port - 1]); |
2f5bb473 JM |
1549 | |
1550 | context->pri_path.sched_queue = MLX4_IB_DEFAULT_SCHED_QUEUE | ((qp->port - 1) << 6); | |
25476b02 | 1551 | if (!qp->pri.smac && !qp->pri.smac_port) { |
2f5bb473 JM |
1552 | smac_index = mlx4_register_mac(dev->dev, qp->port, u64_mac); |
1553 | if (smac_index >= 0) { | |
1554 | qp->pri.candidate_smac_index = smac_index; | |
1555 | qp->pri.candidate_smac = u64_mac; | |
1556 | qp->pri.candidate_smac_port = qp->port; | |
1557 | context->pri_path.grh_mylmc = 0x80 | (u8) smac_index; | |
1558 | } else { | |
1559 | return -ENOENT; | |
1560 | } | |
1561 | } | |
1562 | return 0; | |
1563 | } | |
1564 | ||
7b59f0f9 EBE |
1565 | static int create_qp_lb_counter(struct mlx4_ib_dev *dev, struct mlx4_ib_qp *qp) |
1566 | { | |
1567 | struct counter_index *new_counter_index; | |
1568 | int err; | |
1569 | u32 tmp_idx; | |
1570 | ||
1571 | if (rdma_port_get_link_layer(&dev->ib_dev, qp->port) != | |
1572 | IB_LINK_LAYER_ETHERNET || | |
1573 | !(qp->flags & MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK) || | |
1574 | !(dev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_LB_SRC_CHK)) | |
1575 | return 0; | |
1576 | ||
1577 | err = mlx4_counter_alloc(dev->dev, &tmp_idx); | |
1578 | if (err) | |
1579 | return err; | |
1580 | ||
1581 | new_counter_index = kmalloc(sizeof(*new_counter_index), GFP_KERNEL); | |
1582 | if (!new_counter_index) { | |
1583 | mlx4_counter_free(dev->dev, tmp_idx); | |
1584 | return -ENOMEM; | |
1585 | } | |
1586 | ||
1587 | new_counter_index->index = tmp_idx; | |
1588 | new_counter_index->allocated = 1; | |
1589 | qp->counter_index = new_counter_index; | |
1590 | ||
1591 | mutex_lock(&dev->counters_table[qp->port - 1].mutex); | |
1592 | list_add_tail(&new_counter_index->list, | |
1593 | &dev->counters_table[qp->port - 1].counters_list); | |
1594 | mutex_unlock(&dev->counters_table[qp->port - 1].mutex); | |
1595 | ||
1596 | return 0; | |
1597 | } | |
1598 | ||
3b5daf28 MS |
1599 | enum { |
1600 | MLX4_QPC_ROCE_MODE_1 = 0, | |
1601 | MLX4_QPC_ROCE_MODE_2 = 2, | |
1602 | MLX4_QPC_ROCE_MODE_UNDEFINED = 0xff | |
1603 | }; | |
1604 | ||
1605 | static u8 gid_type_to_qpc(enum ib_gid_type gid_type) | |
1606 | { | |
1607 | switch (gid_type) { | |
1608 | case IB_GID_TYPE_ROCE: | |
1609 | return MLX4_QPC_ROCE_MODE_1; | |
1610 | case IB_GID_TYPE_ROCE_UDP_ENCAP: | |
1611 | return MLX4_QPC_ROCE_MODE_2; | |
1612 | default: | |
1613 | return MLX4_QPC_ROCE_MODE_UNDEFINED; | |
1614 | } | |
1615 | } | |
1616 | ||
65adfa91 MT |
1617 | static int __mlx4_ib_modify_qp(struct ib_qp *ibqp, |
1618 | const struct ib_qp_attr *attr, int attr_mask, | |
1619 | enum ib_qp_state cur_state, enum ib_qp_state new_state) | |
225c7b1f RD |
1620 | { |
1621 | struct mlx4_ib_dev *dev = to_mdev(ibqp->device); | |
1622 | struct mlx4_ib_qp *qp = to_mqp(ibqp); | |
0a1405da SH |
1623 | struct mlx4_ib_pd *pd; |
1624 | struct mlx4_ib_cq *send_cq, *recv_cq; | |
225c7b1f RD |
1625 | struct mlx4_qp_context *context; |
1626 | enum mlx4_qp_optpar optpar = 0; | |
225c7b1f | 1627 | int sqd_event; |
c1c98501 | 1628 | int steer_qp = 0; |
225c7b1f | 1629 | int err = -EINVAL; |
3ba8e31d | 1630 | int counter_index; |
225c7b1f | 1631 | |
3dec4878 JM |
1632 | /* APM is not supported under RoCE */ |
1633 | if (attr_mask & IB_QP_ALT_PATH && | |
1634 | rdma_port_get_link_layer(&dev->ib_dev, qp->port) == | |
1635 | IB_LINK_LAYER_ETHERNET) | |
1636 | return -ENOTSUPP; | |
1637 | ||
225c7b1f RD |
1638 | context = kzalloc(sizeof *context, GFP_KERNEL); |
1639 | if (!context) | |
1640 | return -ENOMEM; | |
1641 | ||
225c7b1f | 1642 | context->flags = cpu_to_be32((to_mlx4_state(new_state) << 28) | |
1ffeb2eb | 1643 | (to_mlx4_st(dev, qp->mlx4_ib_qp_type) << 16)); |
225c7b1f RD |
1644 | |
1645 | if (!(attr_mask & IB_QP_PATH_MIG_STATE)) | |
1646 | context->flags |= cpu_to_be32(MLX4_QP_PM_MIGRATED << 11); | |
1647 | else { | |
1648 | optpar |= MLX4_QP_OPTPAR_PM_STATE; | |
1649 | switch (attr->path_mig_state) { | |
1650 | case IB_MIG_MIGRATED: | |
1651 | context->flags |= cpu_to_be32(MLX4_QP_PM_MIGRATED << 11); | |
1652 | break; | |
1653 | case IB_MIG_REARM: | |
1654 | context->flags |= cpu_to_be32(MLX4_QP_PM_REARM << 11); | |
1655 | break; | |
1656 | case IB_MIG_ARMED: | |
1657 | context->flags |= cpu_to_be32(MLX4_QP_PM_ARMED << 11); | |
1658 | break; | |
1659 | } | |
1660 | } | |
1661 | ||
b832be1e | 1662 | if (ibqp->qp_type == IB_QPT_GSI || ibqp->qp_type == IB_QPT_SMI) |
225c7b1f | 1663 | context->mtu_msgmax = (IB_MTU_4096 << 5) | 11; |
3987a2d3 OG |
1664 | else if (ibqp->qp_type == IB_QPT_RAW_PACKET) |
1665 | context->mtu_msgmax = (MLX4_RAW_QP_MTU << 5) | MLX4_RAW_QP_MSGMAX; | |
b832be1e EC |
1666 | else if (ibqp->qp_type == IB_QPT_UD) { |
1667 | if (qp->flags & MLX4_IB_QP_LSO) | |
1668 | context->mtu_msgmax = (IB_MTU_4096 << 5) | | |
1669 | ilog2(dev->dev->caps.max_gso_sz); | |
1670 | else | |
6e0d733d | 1671 | context->mtu_msgmax = (IB_MTU_4096 << 5) | 12; |
b832be1e | 1672 | } else if (attr_mask & IB_QP_PATH_MTU) { |
225c7b1f | 1673 | if (attr->path_mtu < IB_MTU_256 || attr->path_mtu > IB_MTU_4096) { |
987c8f8f | 1674 | pr_err("path MTU (%u) is invalid\n", |
225c7b1f | 1675 | attr->path_mtu); |
f5b40431 | 1676 | goto out; |
225c7b1f | 1677 | } |
d1f2cd89 EC |
1678 | context->mtu_msgmax = (attr->path_mtu << 5) | |
1679 | ilog2(dev->dev->caps.max_msg_sz); | |
225c7b1f RD |
1680 | } |
1681 | ||
0e6e7416 RD |
1682 | if (qp->rq.wqe_cnt) |
1683 | context->rq_size_stride = ilog2(qp->rq.wqe_cnt) << 3; | |
225c7b1f RD |
1684 | context->rq_size_stride |= qp->rq.wqe_shift - 4; |
1685 | ||
0e6e7416 RD |
1686 | if (qp->sq.wqe_cnt) |
1687 | context->sq_size_stride = ilog2(qp->sq.wqe_cnt) << 3; | |
225c7b1f RD |
1688 | context->sq_size_stride |= qp->sq.wqe_shift - 4; |
1689 | ||
7b59f0f9 EBE |
1690 | if (new_state == IB_QPS_RESET && qp->counter_index) |
1691 | mlx4_ib_free_qp_counter(dev, qp); | |
1692 | ||
0a1405da | 1693 | if (cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT) { |
0e6e7416 | 1694 | context->sq_size_stride |= !!qp->sq_no_prefetch << 7; |
0a1405da | 1695 | context->xrcd = cpu_to_be32((u32) qp->xrcdn); |
02d7ef6f DB |
1696 | if (ibqp->qp_type == IB_QPT_RAW_PACKET) |
1697 | context->param3 |= cpu_to_be32(1 << 30); | |
0a1405da | 1698 | } |
0e6e7416 | 1699 | |
225c7b1f | 1700 | if (qp->ibqp.uobject) |
85743f1e HN |
1701 | context->usr_page = cpu_to_be32( |
1702 | mlx4_to_hw_uar_index(dev->dev, | |
1703 | to_mucontext(ibqp->uobject->context)->uar.index)); | |
225c7b1f | 1704 | else |
85743f1e HN |
1705 | context->usr_page = cpu_to_be32( |
1706 | mlx4_to_hw_uar_index(dev->dev, dev->priv_uar.index)); | |
225c7b1f RD |
1707 | |
1708 | if (attr_mask & IB_QP_DEST_QPN) | |
1709 | context->remote_qpn = cpu_to_be32(attr->dest_qp_num); | |
1710 | ||
1711 | if (attr_mask & IB_QP_PORT) { | |
1712 | if (cur_state == IB_QPS_SQD && new_state == IB_QPS_SQD && | |
1713 | !(attr_mask & IB_QP_AV)) { | |
1714 | mlx4_set_sched(&context->pri_path, attr->port_num); | |
1715 | optpar |= MLX4_QP_OPTPAR_SCHED_QUEUE; | |
1716 | } | |
1717 | } | |
1718 | ||
cfcde11c | 1719 | if (cur_state == IB_QPS_INIT && new_state == IB_QPS_RTR) { |
7b59f0f9 EBE |
1720 | err = create_qp_lb_counter(dev, qp); |
1721 | if (err) | |
1722 | goto out; | |
1723 | ||
3ba8e31d EBE |
1724 | counter_index = |
1725 | dev->counters_table[qp->port - 1].default_counter; | |
7b59f0f9 EBE |
1726 | if (qp->counter_index) |
1727 | counter_index = qp->counter_index->index; | |
1728 | ||
3ba8e31d EBE |
1729 | if (counter_index != -1) { |
1730 | context->pri_path.counter_index = counter_index; | |
cfcde11c | 1731 | optpar |= MLX4_QP_OPTPAR_COUNTER_INDEX; |
7b59f0f9 EBE |
1732 | if (qp->counter_index) { |
1733 | context->pri_path.fl |= | |
1734 | MLX4_FL_ETH_SRC_CHECK_MC_LB; | |
1735 | context->pri_path.vlan_control |= | |
1736 | MLX4_CTRL_ETH_SRC_CHECK_IF_COUNTER; | |
1737 | } | |
cfcde11c | 1738 | } else |
47d8417f EBE |
1739 | context->pri_path.counter_index = |
1740 | MLX4_SINK_COUNTER_INDEX(dev->dev); | |
c1c98501 MB |
1741 | |
1742 | if (qp->flags & MLX4_IB_QP_NETIF) { | |
1743 | mlx4_ib_steer_qp_reg(dev, qp, 1); | |
1744 | steer_qp = 1; | |
1745 | } | |
e1b866c6 MS |
1746 | |
1747 | if (ibqp->qp_type == IB_QPT_GSI) { | |
1748 | enum ib_gid_type gid_type = qp->flags & MLX4_IB_ROCE_V2_GSI_QP ? | |
1749 | IB_GID_TYPE_ROCE_UDP_ENCAP : IB_GID_TYPE_ROCE; | |
1750 | u8 qpc_roce_mode = gid_type_to_qpc(gid_type); | |
1751 | ||
1752 | context->rlkey_roce_mode |= (qpc_roce_mode << 6); | |
1753 | } | |
cfcde11c OG |
1754 | } |
1755 | ||
225c7b1f | 1756 | if (attr_mask & IB_QP_PKEY_INDEX) { |
1ffeb2eb JM |
1757 | if (qp->mlx4_ib_qp_type & MLX4_IB_QPT_ANY_SRIOV) |
1758 | context->pri_path.disable_pkey_check = 0x40; | |
225c7b1f RD |
1759 | context->pri_path.pkey_index = attr->pkey_index; |
1760 | optpar |= MLX4_QP_OPTPAR_PKEY_INDEX; | |
1761 | } | |
1762 | ||
225c7b1f | 1763 | if (attr_mask & IB_QP_AV) { |
dbf727de MB |
1764 | u8 port_num = mlx4_is_bonded(to_mdev(ibqp->device)->dev) ? 1 : |
1765 | attr_mask & IB_QP_PORT ? attr->port_num : qp->port; | |
1766 | union ib_gid gid; | |
1767 | struct ib_gid_attr gid_attr; | |
1768 | u16 vlan = 0xffff; | |
1769 | u8 smac[ETH_ALEN]; | |
1770 | int status = 0; | |
3b5daf28 MS |
1771 | int is_eth = rdma_cap_eth_ah(&dev->ib_dev, port_num) && |
1772 | attr->ah_attr.ah_flags & IB_AH_GRH; | |
dbf727de | 1773 | |
3b5daf28 | 1774 | if (is_eth) { |
dbf727de MB |
1775 | int index = attr->ah_attr.grh.sgid_index; |
1776 | ||
1777 | status = ib_get_cached_gid(ibqp->device, port_num, | |
1778 | index, &gid, &gid_attr); | |
1779 | if (!status && !memcmp(&gid, &zgid, sizeof(gid))) | |
1780 | status = -ENOENT; | |
1781 | if (!status && gid_attr.ndev) { | |
1782 | vlan = rdma_vlan_dev_vlan_id(gid_attr.ndev); | |
1783 | memcpy(smac, gid_attr.ndev->dev_addr, ETH_ALEN); | |
1784 | dev_put(gid_attr.ndev); | |
1785 | } | |
1786 | } | |
1787 | if (status) | |
1788 | goto out; | |
1789 | ||
2f5bb473 | 1790 | if (mlx4_set_path(dev, attr, attr_mask, qp, &context->pri_path, |
dbf727de | 1791 | port_num, vlan, smac)) |
225c7b1f | 1792 | goto out; |
225c7b1f RD |
1793 | |
1794 | optpar |= (MLX4_QP_OPTPAR_PRIMARY_ADDR_PATH | | |
1795 | MLX4_QP_OPTPAR_SCHED_QUEUE); | |
3b5daf28 MS |
1796 | |
1797 | if (is_eth && | |
1798 | (cur_state == IB_QPS_INIT && new_state == IB_QPS_RTR)) { | |
1799 | u8 qpc_roce_mode = gid_type_to_qpc(gid_attr.gid_type); | |
1800 | ||
1801 | if (qpc_roce_mode == MLX4_QPC_ROCE_MODE_UNDEFINED) { | |
1802 | err = -EINVAL; | |
1803 | goto out; | |
1804 | } | |
1805 | context->rlkey_roce_mode |= (qpc_roce_mode << 6); | |
1806 | } | |
1807 | ||
225c7b1f RD |
1808 | } |
1809 | ||
1810 | if (attr_mask & IB_QP_TIMEOUT) { | |
fa417f7b | 1811 | context->pri_path.ackto |= attr->timeout << 3; |
225c7b1f RD |
1812 | optpar |= MLX4_QP_OPTPAR_ACK_TIMEOUT; |
1813 | } | |
1814 | ||
1815 | if (attr_mask & IB_QP_ALT_PATH) { | |
225c7b1f RD |
1816 | if (attr->alt_port_num == 0 || |
1817 | attr->alt_port_num > dev->dev->caps.num_ports) | |
f5b40431 | 1818 | goto out; |
225c7b1f | 1819 | |
5ae2a7a8 RD |
1820 | if (attr->alt_pkey_index >= |
1821 | dev->dev->caps.pkey_table_len[attr->alt_port_num]) | |
f5b40431 | 1822 | goto out; |
5ae2a7a8 | 1823 | |
2f5bb473 JM |
1824 | if (mlx4_set_alt_path(dev, attr, attr_mask, qp, |
1825 | &context->alt_path, | |
297e0dad | 1826 | attr->alt_port_num)) |
f5b40431 | 1827 | goto out; |
225c7b1f RD |
1828 | |
1829 | context->alt_path.pkey_index = attr->alt_pkey_index; | |
1830 | context->alt_path.ackto = attr->alt_timeout << 3; | |
1831 | optpar |= MLX4_QP_OPTPAR_ALT_ADDR_PATH; | |
1832 | } | |
1833 | ||
0a1405da SH |
1834 | pd = get_pd(qp); |
1835 | get_cqs(qp, &send_cq, &recv_cq); | |
1836 | context->pd = cpu_to_be32(pd->pdn); | |
1837 | context->cqn_send = cpu_to_be32(send_cq->mcq.cqn); | |
1838 | context->cqn_recv = cpu_to_be32(recv_cq->mcq.cqn); | |
1839 | context->params1 = cpu_to_be32(MLX4_IB_ACK_REQ_FREQ << 28); | |
57f01b53 | 1840 | |
95d04f07 RD |
1841 | /* Set "fast registration enabled" for all kernel QPs */ |
1842 | if (!qp->ibqp.uobject) | |
1843 | context->params1 |= cpu_to_be32(1 << 11); | |
1844 | ||
57f01b53 JM |
1845 | if (attr_mask & IB_QP_RNR_RETRY) { |
1846 | context->params1 |= cpu_to_be32(attr->rnr_retry << 13); | |
1847 | optpar |= MLX4_QP_OPTPAR_RNR_RETRY; | |
1848 | } | |
1849 | ||
225c7b1f RD |
1850 | if (attr_mask & IB_QP_RETRY_CNT) { |
1851 | context->params1 |= cpu_to_be32(attr->retry_cnt << 16); | |
1852 | optpar |= MLX4_QP_OPTPAR_RETRY_COUNT; | |
1853 | } | |
1854 | ||
1855 | if (attr_mask & IB_QP_MAX_QP_RD_ATOMIC) { | |
1856 | if (attr->max_rd_atomic) | |
1857 | context->params1 |= | |
1858 | cpu_to_be32(fls(attr->max_rd_atomic - 1) << 21); | |
1859 | optpar |= MLX4_QP_OPTPAR_SRA_MAX; | |
1860 | } | |
1861 | ||
1862 | if (attr_mask & IB_QP_SQ_PSN) | |
1863 | context->next_send_psn = cpu_to_be32(attr->sq_psn); | |
1864 | ||
225c7b1f RD |
1865 | if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC) { |
1866 | if (attr->max_dest_rd_atomic) | |
1867 | context->params2 |= | |
1868 | cpu_to_be32(fls(attr->max_dest_rd_atomic - 1) << 21); | |
1869 | optpar |= MLX4_QP_OPTPAR_RRA_MAX; | |
1870 | } | |
1871 | ||
1872 | if (attr_mask & (IB_QP_ACCESS_FLAGS | IB_QP_MAX_DEST_RD_ATOMIC)) { | |
1873 | context->params2 |= to_mlx4_access_flags(qp, attr, attr_mask); | |
1874 | optpar |= MLX4_QP_OPTPAR_RWE | MLX4_QP_OPTPAR_RRE | MLX4_QP_OPTPAR_RAE; | |
1875 | } | |
1876 | ||
1877 | if (ibqp->srq) | |
1878 | context->params2 |= cpu_to_be32(MLX4_QP_BIT_RIC); | |
1879 | ||
1880 | if (attr_mask & IB_QP_MIN_RNR_TIMER) { | |
1881 | context->rnr_nextrecvpsn |= cpu_to_be32(attr->min_rnr_timer << 24); | |
1882 | optpar |= MLX4_QP_OPTPAR_RNR_TIMEOUT; | |
1883 | } | |
1884 | if (attr_mask & IB_QP_RQ_PSN) | |
1885 | context->rnr_nextrecvpsn |= cpu_to_be32(attr->rq_psn); | |
1886 | ||
1ffeb2eb | 1887 | /* proxy and tunnel qp qkeys will be changed in modify-qp wrappers */ |
225c7b1f | 1888 | if (attr_mask & IB_QP_QKEY) { |
1ffeb2eb JM |
1889 | if (qp->mlx4_ib_qp_type & |
1890 | (MLX4_IB_QPT_PROXY_SMI_OWNER | MLX4_IB_QPT_TUN_SMI_OWNER)) | |
1891 | context->qkey = cpu_to_be32(IB_QP_SET_QKEY); | |
1892 | else { | |
1893 | if (mlx4_is_mfunc(dev->dev) && | |
1894 | !(qp->mlx4_ib_qp_type & MLX4_IB_QPT_ANY_SRIOV) && | |
1895 | (attr->qkey & MLX4_RESERVED_QKEY_MASK) == | |
1896 | MLX4_RESERVED_QKEY_BASE) { | |
1897 | pr_err("Cannot use reserved QKEY" | |
1898 | " 0x%x (range 0xffff0000..0xffffffff" | |
1899 | " is reserved)\n", attr->qkey); | |
1900 | err = -EINVAL; | |
1901 | goto out; | |
1902 | } | |
1903 | context->qkey = cpu_to_be32(attr->qkey); | |
1904 | } | |
225c7b1f RD |
1905 | optpar |= MLX4_QP_OPTPAR_Q_KEY; |
1906 | } | |
1907 | ||
1908 | if (ibqp->srq) | |
1909 | context->srqn = cpu_to_be32(1 << 24 | to_msrq(ibqp->srq)->msrq.srqn); | |
1910 | ||
0a1405da | 1911 | if (qp->rq.wqe_cnt && cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT) |
225c7b1f RD |
1912 | context->db_rec_addr = cpu_to_be64(qp->db.dma); |
1913 | ||
1914 | if (cur_state == IB_QPS_INIT && | |
1915 | new_state == IB_QPS_RTR && | |
1916 | (ibqp->qp_type == IB_QPT_GSI || ibqp->qp_type == IB_QPT_SMI || | |
3987a2d3 OG |
1917 | ibqp->qp_type == IB_QPT_UD || |
1918 | ibqp->qp_type == IB_QPT_RAW_PACKET)) { | |
225c7b1f | 1919 | context->pri_path.sched_queue = (qp->port - 1) << 6; |
1ffeb2eb JM |
1920 | if (qp->mlx4_ib_qp_type == MLX4_IB_QPT_SMI || |
1921 | qp->mlx4_ib_qp_type & | |
1922 | (MLX4_IB_QPT_PROXY_SMI_OWNER | MLX4_IB_QPT_TUN_SMI_OWNER)) { | |
225c7b1f | 1923 | context->pri_path.sched_queue |= MLX4_IB_DEFAULT_QP0_SCHED_QUEUE; |
1ffeb2eb JM |
1924 | if (qp->mlx4_ib_qp_type != MLX4_IB_QPT_SMI) |
1925 | context->pri_path.fl = 0x80; | |
1926 | } else { | |
1927 | if (qp->mlx4_ib_qp_type & MLX4_IB_QPT_ANY_SRIOV) | |
1928 | context->pri_path.fl = 0x80; | |
225c7b1f | 1929 | context->pri_path.sched_queue |= MLX4_IB_DEFAULT_SCHED_QUEUE; |
1ffeb2eb | 1930 | } |
2f5bb473 JM |
1931 | if (rdma_port_get_link_layer(&dev->ib_dev, qp->port) == |
1932 | IB_LINK_LAYER_ETHERNET) { | |
1933 | if (qp->mlx4_ib_qp_type == MLX4_IB_QPT_TUN_GSI || | |
1934 | qp->mlx4_ib_qp_type == MLX4_IB_QPT_GSI) | |
1935 | context->pri_path.feup = 1 << 7; /* don't fsm */ | |
1936 | /* handle smac_index */ | |
1937 | if (qp->mlx4_ib_qp_type == MLX4_IB_QPT_UD || | |
1938 | qp->mlx4_ib_qp_type == MLX4_IB_QPT_PROXY_GSI || | |
1939 | qp->mlx4_ib_qp_type == MLX4_IB_QPT_TUN_GSI) { | |
dbf727de | 1940 | err = handle_eth_ud_smac_index(dev, qp, context); |
bede98e7 MD |
1941 | if (err) { |
1942 | err = -EINVAL; | |
1943 | goto out; | |
1944 | } | |
9433c188 MB |
1945 | if (qp->mlx4_ib_qp_type == MLX4_IB_QPT_PROXY_GSI) |
1946 | dev->qp1_proxy[qp->port - 1] = qp; | |
2f5bb473 JM |
1947 | } |
1948 | } | |
225c7b1f RD |
1949 | } |
1950 | ||
d2fce8a9 | 1951 | if (qp->ibqp.qp_type == IB_QPT_RAW_PACKET) { |
3528f696 EC |
1952 | context->pri_path.ackto = (context->pri_path.ackto & 0xf8) | |
1953 | MLX4_IB_LINK_TYPE_ETH; | |
d2fce8a9 OG |
1954 | if (dev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) { |
1955 | /* set QP to receive both tunneled & non-tunneled packets */ | |
8e1a03b6 | 1956 | if (!(context->flags & cpu_to_be32(1 << MLX4_RSS_QPC_FLAG_OFFSET))) |
d2fce8a9 OG |
1957 | context->srqn = cpu_to_be32(7 << 28); |
1958 | } | |
1959 | } | |
3528f696 | 1960 | |
297e0dad MS |
1961 | if (ibqp->qp_type == IB_QPT_UD && (new_state == IB_QPS_RTR)) { |
1962 | int is_eth = rdma_port_get_link_layer( | |
1963 | &dev->ib_dev, qp->port) == | |
1964 | IB_LINK_LAYER_ETHERNET; | |
1965 | if (is_eth) { | |
1966 | context->pri_path.ackto = MLX4_IB_LINK_TYPE_ETH; | |
1967 | optpar |= MLX4_QP_OPTPAR_PRIMARY_ADDR_PATH; | |
1968 | } | |
1969 | } | |
1970 | ||
1971 | ||
225c7b1f RD |
1972 | if (cur_state == IB_QPS_RTS && new_state == IB_QPS_SQD && |
1973 | attr_mask & IB_QP_EN_SQD_ASYNC_NOTIFY && attr->en_sqd_async_notify) | |
1974 | sqd_event = 1; | |
1975 | else | |
1976 | sqd_event = 0; | |
1977 | ||
d57f5f72 | 1978 | if (!ibqp->uobject && cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT) |
3b5daf28 | 1979 | context->rlkey_roce_mode |= (1 << 4); |
d57f5f72 | 1980 | |
c0be5fb5 EC |
1981 | /* |
1982 | * Before passing a kernel QP to the HW, make sure that the | |
0e6e7416 RD |
1983 | * ownership bits of the send queue are set and the SQ |
1984 | * headroom is stamped so that the hardware doesn't start | |
1985 | * processing stale work requests. | |
c0be5fb5 EC |
1986 | */ |
1987 | if (!ibqp->uobject && cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT) { | |
1988 | struct mlx4_wqe_ctrl_seg *ctrl; | |
1989 | int i; | |
1990 | ||
0e6e7416 | 1991 | for (i = 0; i < qp->sq.wqe_cnt; ++i) { |
c0be5fb5 EC |
1992 | ctrl = get_send_wqe(qp, i); |
1993 | ctrl->owner_opcode = cpu_to_be32(1 << 31); | |
9670e553 EC |
1994 | if (qp->sq_max_wqes_per_wr == 1) |
1995 | ctrl->fence_size = 1 << (qp->sq.wqe_shift - 4); | |
0e6e7416 | 1996 | |
ea54b10c | 1997 | stamp_send_wqe(qp, i, 1 << qp->sq.wqe_shift); |
c0be5fb5 EC |
1998 | } |
1999 | } | |
2000 | ||
225c7b1f RD |
2001 | err = mlx4_qp_modify(dev->dev, &qp->mtt, to_mlx4_state(cur_state), |
2002 | to_mlx4_state(new_state), context, optpar, | |
2003 | sqd_event, &qp->mqp); | |
2004 | if (err) | |
2005 | goto out; | |
2006 | ||
2007 | qp->state = new_state; | |
2008 | ||
2009 | if (attr_mask & IB_QP_ACCESS_FLAGS) | |
2010 | qp->atomic_rd_en = attr->qp_access_flags; | |
2011 | if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC) | |
2012 | qp->resp_depth = attr->max_dest_rd_atomic; | |
fa417f7b | 2013 | if (attr_mask & IB_QP_PORT) { |
225c7b1f | 2014 | qp->port = attr->port_num; |
fa417f7b EC |
2015 | update_mcg_macs(dev, qp); |
2016 | } | |
225c7b1f RD |
2017 | if (attr_mask & IB_QP_ALT_PATH) |
2018 | qp->alt_port = attr->alt_port_num; | |
2019 | ||
2020 | if (is_sqp(dev, qp)) | |
2021 | store_sqp_attrs(to_msqp(qp), attr, attr_mask); | |
2022 | ||
2023 | /* | |
2024 | * If we moved QP0 to RTR, bring the IB link up; if we moved | |
2025 | * QP0 to RESET or ERROR, bring the link back down. | |
2026 | */ | |
2027 | if (is_qp0(dev, qp)) { | |
2028 | if (cur_state != IB_QPS_RTR && new_state == IB_QPS_RTR) | |
5ae2a7a8 | 2029 | if (mlx4_INIT_PORT(dev->dev, qp->port)) |
987c8f8f | 2030 | pr_warn("INIT_PORT failed for port %d\n", |
5ae2a7a8 | 2031 | qp->port); |
225c7b1f RD |
2032 | |
2033 | if (cur_state != IB_QPS_RESET && cur_state != IB_QPS_ERR && | |
2034 | (new_state == IB_QPS_RESET || new_state == IB_QPS_ERR)) | |
2035 | mlx4_CLOSE_PORT(dev->dev, qp->port); | |
2036 | } | |
2037 | ||
2038 | /* | |
2039 | * If we moved a kernel QP to RESET, clean up all old CQ | |
2040 | * entries and reinitialize the QP. | |
2041 | */ | |
2f5bb473 JM |
2042 | if (new_state == IB_QPS_RESET) { |
2043 | if (!ibqp->uobject) { | |
2044 | mlx4_ib_cq_clean(recv_cq, qp->mqp.qpn, | |
2045 | ibqp->srq ? to_msrq(ibqp->srq) : NULL); | |
2046 | if (send_cq != recv_cq) | |
2047 | mlx4_ib_cq_clean(send_cq, qp->mqp.qpn, NULL); | |
2048 | ||
2049 | qp->rq.head = 0; | |
2050 | qp->rq.tail = 0; | |
2051 | qp->sq.head = 0; | |
2052 | qp->sq.tail = 0; | |
2053 | qp->sq_next_wqe = 0; | |
2054 | if (qp->rq.wqe_cnt) | |
2055 | *qp->db.db = 0; | |
225c7b1f | 2056 | |
2f5bb473 JM |
2057 | if (qp->flags & MLX4_IB_QP_NETIF) |
2058 | mlx4_ib_steer_qp_reg(dev, qp, 0); | |
2059 | } | |
25476b02 | 2060 | if (qp->pri.smac || (!qp->pri.smac && qp->pri.smac_port)) { |
2f5bb473 JM |
2061 | mlx4_unregister_mac(dev->dev, qp->pri.smac_port, qp->pri.smac); |
2062 | qp->pri.smac = 0; | |
25476b02 | 2063 | qp->pri.smac_port = 0; |
2f5bb473 JM |
2064 | } |
2065 | if (qp->alt.smac) { | |
2066 | mlx4_unregister_mac(dev->dev, qp->alt.smac_port, qp->alt.smac); | |
2067 | qp->alt.smac = 0; | |
2068 | } | |
2069 | if (qp->pri.vid < 0x1000) { | |
2070 | mlx4_unregister_vlan(dev->dev, qp->pri.vlan_port, qp->pri.vid); | |
2071 | qp->pri.vid = 0xFFFF; | |
2072 | qp->pri.candidate_vid = 0xFFFF; | |
2073 | qp->pri.update_vid = 0; | |
2074 | } | |
c1c98501 | 2075 | |
2f5bb473 JM |
2076 | if (qp->alt.vid < 0x1000) { |
2077 | mlx4_unregister_vlan(dev->dev, qp->alt.vlan_port, qp->alt.vid); | |
2078 | qp->alt.vid = 0xFFFF; | |
2079 | qp->alt.candidate_vid = 0xFFFF; | |
2080 | qp->alt.update_vid = 0; | |
2081 | } | |
225c7b1f | 2082 | } |
225c7b1f | 2083 | out: |
7b59f0f9 EBE |
2084 | if (err && qp->counter_index) |
2085 | mlx4_ib_free_qp_counter(dev, qp); | |
c1c98501 MB |
2086 | if (err && steer_qp) |
2087 | mlx4_ib_steer_qp_reg(dev, qp, 0); | |
225c7b1f | 2088 | kfree(context); |
25476b02 JM |
2089 | if (qp->pri.candidate_smac || |
2090 | (!qp->pri.candidate_smac && qp->pri.candidate_smac_port)) { | |
2f5bb473 JM |
2091 | if (err) { |
2092 | mlx4_unregister_mac(dev->dev, qp->pri.candidate_smac_port, qp->pri.candidate_smac); | |
2093 | } else { | |
25476b02 | 2094 | if (qp->pri.smac || (!qp->pri.smac && qp->pri.smac_port)) |
2f5bb473 JM |
2095 | mlx4_unregister_mac(dev->dev, qp->pri.smac_port, qp->pri.smac); |
2096 | qp->pri.smac = qp->pri.candidate_smac; | |
2097 | qp->pri.smac_index = qp->pri.candidate_smac_index; | |
2098 | qp->pri.smac_port = qp->pri.candidate_smac_port; | |
2099 | } | |
2100 | qp->pri.candidate_smac = 0; | |
2101 | qp->pri.candidate_smac_index = 0; | |
2102 | qp->pri.candidate_smac_port = 0; | |
2103 | } | |
2104 | if (qp->alt.candidate_smac) { | |
2105 | if (err) { | |
2106 | mlx4_unregister_mac(dev->dev, qp->alt.candidate_smac_port, qp->alt.candidate_smac); | |
2107 | } else { | |
2108 | if (qp->alt.smac) | |
2109 | mlx4_unregister_mac(dev->dev, qp->alt.smac_port, qp->alt.smac); | |
2110 | qp->alt.smac = qp->alt.candidate_smac; | |
2111 | qp->alt.smac_index = qp->alt.candidate_smac_index; | |
2112 | qp->alt.smac_port = qp->alt.candidate_smac_port; | |
2113 | } | |
2114 | qp->alt.candidate_smac = 0; | |
2115 | qp->alt.candidate_smac_index = 0; | |
2116 | qp->alt.candidate_smac_port = 0; | |
2117 | } | |
2118 | ||
2119 | if (qp->pri.update_vid) { | |
2120 | if (err) { | |
2121 | if (qp->pri.candidate_vid < 0x1000) | |
2122 | mlx4_unregister_vlan(dev->dev, qp->pri.candidate_vlan_port, | |
2123 | qp->pri.candidate_vid); | |
2124 | } else { | |
2125 | if (qp->pri.vid < 0x1000) | |
2126 | mlx4_unregister_vlan(dev->dev, qp->pri.vlan_port, | |
2127 | qp->pri.vid); | |
2128 | qp->pri.vid = qp->pri.candidate_vid; | |
2129 | qp->pri.vlan_port = qp->pri.candidate_vlan_port; | |
2130 | qp->pri.vlan_index = qp->pri.candidate_vlan_index; | |
2131 | } | |
2132 | qp->pri.candidate_vid = 0xFFFF; | |
2133 | qp->pri.update_vid = 0; | |
2134 | } | |
2135 | ||
2136 | if (qp->alt.update_vid) { | |
2137 | if (err) { | |
2138 | if (qp->alt.candidate_vid < 0x1000) | |
2139 | mlx4_unregister_vlan(dev->dev, qp->alt.candidate_vlan_port, | |
2140 | qp->alt.candidate_vid); | |
2141 | } else { | |
2142 | if (qp->alt.vid < 0x1000) | |
2143 | mlx4_unregister_vlan(dev->dev, qp->alt.vlan_port, | |
2144 | qp->alt.vid); | |
2145 | qp->alt.vid = qp->alt.candidate_vid; | |
2146 | qp->alt.vlan_port = qp->alt.candidate_vlan_port; | |
2147 | qp->alt.vlan_index = qp->alt.candidate_vlan_index; | |
2148 | } | |
2149 | qp->alt.candidate_vid = 0xFFFF; | |
2150 | qp->alt.update_vid = 0; | |
2151 | } | |
2152 | ||
225c7b1f RD |
2153 | return err; |
2154 | } | |
2155 | ||
e1b866c6 MS |
2156 | static int _mlx4_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, |
2157 | int attr_mask, struct ib_udata *udata) | |
65adfa91 MT |
2158 | { |
2159 | struct mlx4_ib_dev *dev = to_mdev(ibqp->device); | |
2160 | struct mlx4_ib_qp *qp = to_mqp(ibqp); | |
2161 | enum ib_qp_state cur_state, new_state; | |
2162 | int err = -EINVAL; | |
297e0dad | 2163 | int ll; |
65adfa91 MT |
2164 | mutex_lock(&qp->mutex); |
2165 | ||
2166 | cur_state = attr_mask & IB_QP_CUR_STATE ? attr->cur_qp_state : qp->state; | |
2167 | new_state = attr_mask & IB_QP_STATE ? attr->qp_state : cur_state; | |
2168 | ||
297e0dad MS |
2169 | if (cur_state == new_state && cur_state == IB_QPS_RESET) { |
2170 | ll = IB_LINK_LAYER_UNSPECIFIED; | |
2171 | } else { | |
2172 | int port = attr_mask & IB_QP_PORT ? attr->port_num : qp->port; | |
2173 | ll = rdma_port_get_link_layer(&dev->ib_dev, port); | |
2174 | } | |
dd5f03be MB |
2175 | |
2176 | if (!ib_modify_qp_is_ok(cur_state, new_state, ibqp->qp_type, | |
297e0dad | 2177 | attr_mask, ll)) { |
b1d8eb5a JM |
2178 | pr_debug("qpn 0x%x: invalid attribute mask specified " |
2179 | "for transition %d to %d. qp_type %d," | |
2180 | " attr_mask 0x%x\n", | |
2181 | ibqp->qp_num, cur_state, new_state, | |
2182 | ibqp->qp_type, attr_mask); | |
65adfa91 | 2183 | goto out; |
b1d8eb5a | 2184 | } |
65adfa91 | 2185 | |
c6215745 MS |
2186 | if (mlx4_is_bonded(dev->dev) && (attr_mask & IB_QP_PORT)) { |
2187 | if ((cur_state == IB_QPS_RESET) && (new_state == IB_QPS_INIT)) { | |
2188 | if ((ibqp->qp_type == IB_QPT_RC) || | |
2189 | (ibqp->qp_type == IB_QPT_UD) || | |
2190 | (ibqp->qp_type == IB_QPT_UC) || | |
2191 | (ibqp->qp_type == IB_QPT_RAW_PACKET) || | |
2192 | (ibqp->qp_type == IB_QPT_XRC_INI)) { | |
2193 | attr->port_num = mlx4_ib_bond_next_port(dev); | |
2194 | } | |
2195 | } else { | |
2196 | /* no sense in changing port_num | |
2197 | * when ports are bonded */ | |
2198 | attr_mask &= ~IB_QP_PORT; | |
2199 | } | |
2200 | } | |
2201 | ||
65adfa91 | 2202 | if ((attr_mask & IB_QP_PORT) && |
1ffeb2eb | 2203 | (attr->port_num == 0 || attr->port_num > dev->num_ports)) { |
b1d8eb5a JM |
2204 | pr_debug("qpn 0x%x: invalid port number (%d) specified " |
2205 | "for transition %d to %d. qp_type %d\n", | |
2206 | ibqp->qp_num, attr->port_num, cur_state, | |
2207 | new_state, ibqp->qp_type); | |
65adfa91 MT |
2208 | goto out; |
2209 | } | |
2210 | ||
3987a2d3 OG |
2211 | if ((attr_mask & IB_QP_PORT) && (ibqp->qp_type == IB_QPT_RAW_PACKET) && |
2212 | (rdma_port_get_link_layer(&dev->ib_dev, attr->port_num) != | |
2213 | IB_LINK_LAYER_ETHERNET)) | |
2214 | goto out; | |
2215 | ||
5ae2a7a8 RD |
2216 | if (attr_mask & IB_QP_PKEY_INDEX) { |
2217 | int p = attr_mask & IB_QP_PORT ? attr->port_num : qp->port; | |
b1d8eb5a JM |
2218 | if (attr->pkey_index >= dev->dev->caps.pkey_table_len[p]) { |
2219 | pr_debug("qpn 0x%x: invalid pkey index (%d) specified " | |
2220 | "for transition %d to %d. qp_type %d\n", | |
2221 | ibqp->qp_num, attr->pkey_index, cur_state, | |
2222 | new_state, ibqp->qp_type); | |
5ae2a7a8 | 2223 | goto out; |
b1d8eb5a | 2224 | } |
5ae2a7a8 RD |
2225 | } |
2226 | ||
65adfa91 MT |
2227 | if (attr_mask & IB_QP_MAX_QP_RD_ATOMIC && |
2228 | attr->max_rd_atomic > dev->dev->caps.max_qp_init_rdma) { | |
b1d8eb5a JM |
2229 | pr_debug("qpn 0x%x: max_rd_atomic (%d) too large. " |
2230 | "Transition %d to %d. qp_type %d\n", | |
2231 | ibqp->qp_num, attr->max_rd_atomic, cur_state, | |
2232 | new_state, ibqp->qp_type); | |
65adfa91 MT |
2233 | goto out; |
2234 | } | |
2235 | ||
2236 | if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC && | |
2237 | attr->max_dest_rd_atomic > dev->dev->caps.max_qp_dest_rdma) { | |
b1d8eb5a JM |
2238 | pr_debug("qpn 0x%x: max_dest_rd_atomic (%d) too large. " |
2239 | "Transition %d to %d. qp_type %d\n", | |
2240 | ibqp->qp_num, attr->max_dest_rd_atomic, cur_state, | |
2241 | new_state, ibqp->qp_type); | |
65adfa91 MT |
2242 | goto out; |
2243 | } | |
2244 | ||
2245 | if (cur_state == new_state && cur_state == IB_QPS_RESET) { | |
2246 | err = 0; | |
2247 | goto out; | |
2248 | } | |
2249 | ||
65adfa91 MT |
2250 | err = __mlx4_ib_modify_qp(ibqp, attr, attr_mask, cur_state, new_state); |
2251 | ||
c6215745 MS |
2252 | if (mlx4_is_bonded(dev->dev) && (attr_mask & IB_QP_PORT)) |
2253 | attr->port_num = 1; | |
2254 | ||
65adfa91 MT |
2255 | out: |
2256 | mutex_unlock(&qp->mutex); | |
2257 | return err; | |
2258 | } | |
2259 | ||
e1b866c6 MS |
2260 | int mlx4_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, |
2261 | int attr_mask, struct ib_udata *udata) | |
2262 | { | |
2263 | struct mlx4_ib_qp *mqp = to_mqp(ibqp); | |
2264 | int ret; | |
2265 | ||
2266 | ret = _mlx4_ib_modify_qp(ibqp, attr, attr_mask, udata); | |
2267 | ||
2268 | if (mqp->mlx4_ib_qp_type == MLX4_IB_QPT_GSI) { | |
2269 | struct mlx4_ib_sqp *sqp = to_msqp(mqp); | |
2270 | int err = 0; | |
2271 | ||
2272 | if (sqp->roce_v2_gsi) | |
2273 | err = ib_modify_qp(sqp->roce_v2_gsi, attr, attr_mask); | |
2274 | if (err) | |
2275 | pr_err("Failed to modify GSI QP for RoCEv2 (%d)\n", | |
2276 | err); | |
2277 | } | |
2278 | return ret; | |
2279 | } | |
2280 | ||
99ec41d0 JM |
2281 | static int vf_get_qp0_qkey(struct mlx4_dev *dev, int qpn, u32 *qkey) |
2282 | { | |
2283 | int i; | |
2284 | for (i = 0; i < dev->caps.num_ports; i++) { | |
2285 | if (qpn == dev->caps.qp0_proxy[i] || | |
2286 | qpn == dev->caps.qp0_tunnel[i]) { | |
2287 | *qkey = dev->caps.qp0_qkey[i]; | |
2288 | return 0; | |
2289 | } | |
2290 | } | |
2291 | return -EINVAL; | |
2292 | } | |
2293 | ||
1ffeb2eb | 2294 | static int build_sriov_qp0_header(struct mlx4_ib_sqp *sqp, |
e622f2f4 | 2295 | struct ib_ud_wr *wr, |
1ffeb2eb JM |
2296 | void *wqe, unsigned *mlx_seg_len) |
2297 | { | |
2298 | struct mlx4_ib_dev *mdev = to_mdev(sqp->qp.ibqp.device); | |
2299 | struct ib_device *ib_dev = &mdev->ib_dev; | |
2300 | struct mlx4_wqe_mlx_seg *mlx = wqe; | |
2301 | struct mlx4_wqe_inline_seg *inl = wqe + sizeof *mlx; | |
e622f2f4 | 2302 | struct mlx4_ib_ah *ah = to_mah(wr->ah); |
1ffeb2eb JM |
2303 | u16 pkey; |
2304 | u32 qkey; | |
2305 | int send_size; | |
2306 | int header_size; | |
2307 | int spc; | |
2308 | int i; | |
2309 | ||
e622f2f4 | 2310 | if (wr->wr.opcode != IB_WR_SEND) |
1ffeb2eb JM |
2311 | return -EINVAL; |
2312 | ||
2313 | send_size = 0; | |
2314 | ||
e622f2f4 CH |
2315 | for (i = 0; i < wr->wr.num_sge; ++i) |
2316 | send_size += wr->wr.sg_list[i].length; | |
1ffeb2eb JM |
2317 | |
2318 | /* for proxy-qp0 sends, need to add in size of tunnel header */ | |
2319 | /* for tunnel-qp0 sends, tunnel header is already in s/g list */ | |
2320 | if (sqp->qp.mlx4_ib_qp_type == MLX4_IB_QPT_PROXY_SMI_OWNER) | |
2321 | send_size += sizeof (struct mlx4_ib_tunnel_header); | |
2322 | ||
25f40220 | 2323 | ib_ud_header_init(send_size, 1, 0, 0, 0, 0, 0, 0, &sqp->ud_header); |
1ffeb2eb JM |
2324 | |
2325 | if (sqp->qp.mlx4_ib_qp_type == MLX4_IB_QPT_PROXY_SMI_OWNER) { | |
2326 | sqp->ud_header.lrh.service_level = | |
2327 | be32_to_cpu(ah->av.ib.sl_tclass_flowlabel) >> 28; | |
2328 | sqp->ud_header.lrh.destination_lid = | |
2329 | cpu_to_be16(ah->av.ib.g_slid & 0x7f); | |
2330 | sqp->ud_header.lrh.source_lid = | |
2331 | cpu_to_be16(ah->av.ib.g_slid & 0x7f); | |
2332 | } | |
2333 | ||
2334 | mlx->flags &= cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE); | |
2335 | ||
2336 | /* force loopback */ | |
2337 | mlx->flags |= cpu_to_be32(MLX4_WQE_MLX_VL15 | 0x1 | MLX4_WQE_MLX_SLR); | |
2338 | mlx->rlid = sqp->ud_header.lrh.destination_lid; | |
2339 | ||
2340 | sqp->ud_header.lrh.virtual_lane = 0; | |
e622f2f4 | 2341 | sqp->ud_header.bth.solicited_event = !!(wr->wr.send_flags & IB_SEND_SOLICITED); |
1ffeb2eb JM |
2342 | ib_get_cached_pkey(ib_dev, sqp->qp.port, 0, &pkey); |
2343 | sqp->ud_header.bth.pkey = cpu_to_be16(pkey); | |
2344 | if (sqp->qp.mlx4_ib_qp_type == MLX4_IB_QPT_TUN_SMI_OWNER) | |
e622f2f4 | 2345 | sqp->ud_header.bth.destination_qpn = cpu_to_be32(wr->remote_qpn); |
1ffeb2eb JM |
2346 | else |
2347 | sqp->ud_header.bth.destination_qpn = | |
47605df9 | 2348 | cpu_to_be32(mdev->dev->caps.qp0_tunnel[sqp->qp.port - 1]); |
1ffeb2eb JM |
2349 | |
2350 | sqp->ud_header.bth.psn = cpu_to_be32((sqp->send_psn++) & ((1 << 24) - 1)); | |
99ec41d0 JM |
2351 | if (mlx4_is_master(mdev->dev)) { |
2352 | if (mlx4_get_parav_qkey(mdev->dev, sqp->qp.mqp.qpn, &qkey)) | |
2353 | return -EINVAL; | |
2354 | } else { | |
2355 | if (vf_get_qp0_qkey(mdev->dev, sqp->qp.mqp.qpn, &qkey)) | |
2356 | return -EINVAL; | |
2357 | } | |
1ffeb2eb JM |
2358 | sqp->ud_header.deth.qkey = cpu_to_be32(qkey); |
2359 | sqp->ud_header.deth.source_qpn = cpu_to_be32(sqp->qp.mqp.qpn); | |
2360 | ||
2361 | sqp->ud_header.bth.opcode = IB_OPCODE_UD_SEND_ONLY; | |
2362 | sqp->ud_header.immediate_present = 0; | |
2363 | ||
2364 | header_size = ib_ud_header_pack(&sqp->ud_header, sqp->header_buf); | |
2365 | ||
2366 | /* | |
2367 | * Inline data segments may not cross a 64 byte boundary. If | |
2368 | * our UD header is bigger than the space available up to the | |
2369 | * next 64 byte boundary in the WQE, use two inline data | |
2370 | * segments to hold the UD header. | |
2371 | */ | |
2372 | spc = MLX4_INLINE_ALIGN - | |
2373 | ((unsigned long) (inl + 1) & (MLX4_INLINE_ALIGN - 1)); | |
2374 | if (header_size <= spc) { | |
2375 | inl->byte_count = cpu_to_be32(1 << 31 | header_size); | |
2376 | memcpy(inl + 1, sqp->header_buf, header_size); | |
2377 | i = 1; | |
2378 | } else { | |
2379 | inl->byte_count = cpu_to_be32(1 << 31 | spc); | |
2380 | memcpy(inl + 1, sqp->header_buf, spc); | |
2381 | ||
2382 | inl = (void *) (inl + 1) + spc; | |
2383 | memcpy(inl + 1, sqp->header_buf + spc, header_size - spc); | |
2384 | /* | |
2385 | * Need a barrier here to make sure all the data is | |
2386 | * visible before the byte_count field is set. | |
2387 | * Otherwise the HCA prefetcher could grab the 64-byte | |
2388 | * chunk with this inline segment and get a valid (!= | |
2389 | * 0xffffffff) byte count but stale data, and end up | |
2390 | * generating a packet with bad headers. | |
2391 | * | |
2392 | * The first inline segment's byte_count field doesn't | |
2393 | * need a barrier, because it comes after a | |
2394 | * control/MLX segment and therefore is at an offset | |
2395 | * of 16 mod 64. | |
2396 | */ | |
2397 | wmb(); | |
2398 | inl->byte_count = cpu_to_be32(1 << 31 | (header_size - spc)); | |
2399 | i = 2; | |
2400 | } | |
2401 | ||
2402 | *mlx_seg_len = | |
2403 | ALIGN(i * sizeof (struct mlx4_wqe_inline_seg) + header_size, 16); | |
2404 | return 0; | |
2405 | } | |
2406 | ||
3ef967a4 | 2407 | #define MLX4_ROCEV2_QP1_SPORT 0xC000 |
e622f2f4 | 2408 | static int build_mlx_header(struct mlx4_ib_sqp *sqp, struct ib_ud_wr *wr, |
f438000f | 2409 | void *wqe, unsigned *mlx_seg_len) |
225c7b1f | 2410 | { |
a478868a | 2411 | struct ib_device *ib_dev = sqp->qp.ibqp.device; |
225c7b1f | 2412 | struct mlx4_wqe_mlx_seg *mlx = wqe; |
6ee51a4e | 2413 | struct mlx4_wqe_ctrl_seg *ctrl = wqe; |
225c7b1f | 2414 | struct mlx4_wqe_inline_seg *inl = wqe + sizeof *mlx; |
e622f2f4 | 2415 | struct mlx4_ib_ah *ah = to_mah(wr->ah); |
4c3eb3ca | 2416 | union ib_gid sgid; |
225c7b1f RD |
2417 | u16 pkey; |
2418 | int send_size; | |
2419 | int header_size; | |
e61ef241 | 2420 | int spc; |
225c7b1f | 2421 | int i; |
1ffeb2eb | 2422 | int err = 0; |
57d88cff | 2423 | u16 vlan = 0xffff; |
a29bec12 RD |
2424 | bool is_eth; |
2425 | bool is_vlan = false; | |
2426 | bool is_grh; | |
3ef967a4 MS |
2427 | bool is_udp = false; |
2428 | int ip_version = 0; | |
225c7b1f RD |
2429 | |
2430 | send_size = 0; | |
e622f2f4 CH |
2431 | for (i = 0; i < wr->wr.num_sge; ++i) |
2432 | send_size += wr->wr.sg_list[i].length; | |
225c7b1f | 2433 | |
fa417f7b EC |
2434 | is_eth = rdma_port_get_link_layer(sqp->qp.ibqp.device, sqp->qp.port) == IB_LINK_LAYER_ETHERNET; |
2435 | is_grh = mlx4_ib_ah_grh_present(ah); | |
4c3eb3ca | 2436 | if (is_eth) { |
3ef967a4 MS |
2437 | struct ib_gid_attr gid_attr; |
2438 | ||
1ffeb2eb JM |
2439 | if (mlx4_is_mfunc(to_mdev(ib_dev)->dev)) { |
2440 | /* When multi-function is enabled, the ib_core gid | |
2441 | * indexes don't necessarily match the hw ones, so | |
2442 | * we must use our own cache */ | |
6ee51a4e JM |
2443 | err = mlx4_get_roce_gid_from_slave(to_mdev(ib_dev)->dev, |
2444 | be32_to_cpu(ah->av.ib.port_pd) >> 24, | |
2445 | ah->av.ib.gid_index, &sgid.raw[0]); | |
2446 | if (err) | |
2447 | return err; | |
1ffeb2eb JM |
2448 | } else { |
2449 | err = ib_get_cached_gid(ib_dev, | |
2450 | be32_to_cpu(ah->av.ib.port_pd) >> 24, | |
55ee3ab2 | 2451 | ah->av.ib.gid_index, &sgid, |
3ef967a4 MS |
2452 | &gid_attr); |
2453 | if (!err) { | |
2454 | if (gid_attr.ndev) | |
2455 | dev_put(gid_attr.ndev); | |
2456 | if (!memcmp(&sgid, &zgid, sizeof(sgid))) | |
2457 | err = -ENOENT; | |
2458 | } | |
2459 | if (!err) { | |
2460 | is_udp = gid_attr.gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP; | |
2461 | if (is_udp) { | |
2462 | if (ipv6_addr_v4mapped((struct in6_addr *)&sgid)) | |
2463 | ip_version = 4; | |
2464 | else | |
2465 | ip_version = 6; | |
2466 | is_grh = false; | |
2467 | } | |
2468 | } else { | |
1ffeb2eb | 2469 | return err; |
3ef967a4 | 2470 | } |
1ffeb2eb | 2471 | } |
0e9855db | 2472 | if (ah->av.eth.vlan != cpu_to_be16(0xffff)) { |
297e0dad MS |
2473 | vlan = be16_to_cpu(ah->av.eth.vlan) & 0x0fff; |
2474 | is_vlan = 1; | |
2475 | } | |
4c3eb3ca | 2476 | } |
25f40220 | 2477 | err = ib_ud_header_init(send_size, !is_eth, is_eth, is_vlan, is_grh, |
3ef967a4 | 2478 | ip_version, is_udp, 0, &sqp->ud_header); |
25f40220 MS |
2479 | if (err) |
2480 | return err; | |
fa417f7b EC |
2481 | |
2482 | if (!is_eth) { | |
2483 | sqp->ud_header.lrh.service_level = | |
2484 | be32_to_cpu(ah->av.ib.sl_tclass_flowlabel) >> 28; | |
2485 | sqp->ud_header.lrh.destination_lid = ah->av.ib.dlid; | |
2486 | sqp->ud_header.lrh.source_lid = cpu_to_be16(ah->av.ib.g_slid & 0x7f); | |
2487 | } | |
225c7b1f | 2488 | |
3ef967a4 | 2489 | if (is_grh || (ip_version == 6)) { |
225c7b1f | 2490 | sqp->ud_header.grh.traffic_class = |
fa417f7b | 2491 | (be32_to_cpu(ah->av.ib.sl_tclass_flowlabel) >> 20) & 0xff; |
225c7b1f | 2492 | sqp->ud_header.grh.flow_label = |
fa417f7b EC |
2493 | ah->av.ib.sl_tclass_flowlabel & cpu_to_be32(0xfffff); |
2494 | sqp->ud_header.grh.hop_limit = ah->av.ib.hop_limit; | |
6ee51a4e JM |
2495 | if (is_eth) |
2496 | memcpy(sqp->ud_header.grh.source_gid.raw, sgid.raw, 16); | |
2497 | else { | |
1ffeb2eb JM |
2498 | if (mlx4_is_mfunc(to_mdev(ib_dev)->dev)) { |
2499 | /* When multi-function is enabled, the ib_core gid | |
2500 | * indexes don't necessarily match the hw ones, so | |
2501 | * we must use our own cache */ | |
2502 | sqp->ud_header.grh.source_gid.global.subnet_prefix = | |
2503 | to_mdev(ib_dev)->sriov.demux[sqp->qp.port - 1]. | |
2504 | subnet_prefix; | |
2505 | sqp->ud_header.grh.source_gid.global.interface_id = | |
2506 | to_mdev(ib_dev)->sriov.demux[sqp->qp.port - 1]. | |
2507 | guid_cache[ah->av.ib.gid_index]; | |
2508 | } else | |
2509 | ib_get_cached_gid(ib_dev, | |
2510 | be32_to_cpu(ah->av.ib.port_pd) >> 24, | |
2511 | ah->av.ib.gid_index, | |
55ee3ab2 | 2512 | &sqp->ud_header.grh.source_gid, NULL); |
6ee51a4e | 2513 | } |
225c7b1f | 2514 | memcpy(sqp->ud_header.grh.destination_gid.raw, |
fa417f7b | 2515 | ah->av.ib.dgid, 16); |
225c7b1f RD |
2516 | } |
2517 | ||
3ef967a4 MS |
2518 | if (ip_version == 4) { |
2519 | sqp->ud_header.ip4.tos = | |
2520 | (be32_to_cpu(ah->av.ib.sl_tclass_flowlabel) >> 20) & 0xff; | |
2521 | sqp->ud_header.ip4.id = 0; | |
2522 | sqp->ud_header.ip4.frag_off = htons(IP_DF); | |
2523 | sqp->ud_header.ip4.ttl = ah->av.eth.hop_limit; | |
2524 | ||
2525 | memcpy(&sqp->ud_header.ip4.saddr, | |
2526 | sgid.raw + 12, 4); | |
2527 | memcpy(&sqp->ud_header.ip4.daddr, ah->av.ib.dgid + 12, 4); | |
2528 | sqp->ud_header.ip4.check = ib_ud_ip4_csum(&sqp->ud_header); | |
2529 | } | |
2530 | ||
2531 | if (is_udp) { | |
2532 | sqp->ud_header.udp.dport = htons(ROCE_V2_UDP_DPORT); | |
2533 | sqp->ud_header.udp.sport = htons(MLX4_ROCEV2_QP1_SPORT); | |
2534 | sqp->ud_header.udp.csum = 0; | |
2535 | } | |
2536 | ||
225c7b1f | 2537 | mlx->flags &= cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE); |
fa417f7b EC |
2538 | |
2539 | if (!is_eth) { | |
2540 | mlx->flags |= cpu_to_be32((!sqp->qp.ibqp.qp_num ? MLX4_WQE_MLX_VL15 : 0) | | |
2541 | (sqp->ud_header.lrh.destination_lid == | |
2542 | IB_LID_PERMISSIVE ? MLX4_WQE_MLX_SLR : 0) | | |
2543 | (sqp->ud_header.lrh.service_level << 8)); | |
1ffeb2eb JM |
2544 | if (ah->av.ib.port_pd & cpu_to_be32(0x80000000)) |
2545 | mlx->flags |= cpu_to_be32(0x1); /* force loopback */ | |
fa417f7b EC |
2546 | mlx->rlid = sqp->ud_header.lrh.destination_lid; |
2547 | } | |
225c7b1f | 2548 | |
e622f2f4 | 2549 | switch (wr->wr.opcode) { |
225c7b1f RD |
2550 | case IB_WR_SEND: |
2551 | sqp->ud_header.bth.opcode = IB_OPCODE_UD_SEND_ONLY; | |
2552 | sqp->ud_header.immediate_present = 0; | |
2553 | break; | |
2554 | case IB_WR_SEND_WITH_IMM: | |
2555 | sqp->ud_header.bth.opcode = IB_OPCODE_UD_SEND_ONLY_WITH_IMMEDIATE; | |
2556 | sqp->ud_header.immediate_present = 1; | |
e622f2f4 | 2557 | sqp->ud_header.immediate_data = wr->wr.ex.imm_data; |
225c7b1f RD |
2558 | break; |
2559 | default: | |
2560 | return -EINVAL; | |
2561 | } | |
2562 | ||
fa417f7b | 2563 | if (is_eth) { |
6ee51a4e | 2564 | struct in6_addr in6; |
3ef967a4 | 2565 | u16 ether_type; |
c0c1d3d7 OD |
2566 | u16 pcp = (be32_to_cpu(ah->av.ib.sl_tclass_flowlabel) >> 29) << 13; |
2567 | ||
3ef967a4 MS |
2568 | ether_type = (!is_udp) ? MLX4_IB_IBOE_ETHERTYPE : |
2569 | (ip_version == 4 ? ETH_P_IP : ETH_P_IPV6); | |
2570 | ||
c0c1d3d7 | 2571 | mlx->sched_prio = cpu_to_be16(pcp); |
fa417f7b | 2572 | |
1049f138 | 2573 | ether_addr_copy(sqp->ud_header.eth.smac_h, ah->av.eth.s_mac); |
fa417f7b | 2574 | memcpy(sqp->ud_header.eth.dmac_h, ah->av.eth.mac, 6); |
6ee51a4e JM |
2575 | memcpy(&ctrl->srcrb_flags16[0], ah->av.eth.mac, 2); |
2576 | memcpy(&ctrl->imm, ah->av.eth.mac + 2, 4); | |
2577 | memcpy(&in6, sgid.raw, sizeof(in6)); | |
5ea8bbfc | 2578 | |
3e0629cb | 2579 | |
fa417f7b EC |
2580 | if (!memcmp(sqp->ud_header.eth.smac_h, sqp->ud_header.eth.dmac_h, 6)) |
2581 | mlx->flags |= cpu_to_be32(MLX4_WQE_CTRL_FORCE_LOOPBACK); | |
4c3eb3ca | 2582 | if (!is_vlan) { |
3ef967a4 | 2583 | sqp->ud_header.eth.type = cpu_to_be16(ether_type); |
4c3eb3ca | 2584 | } else { |
3ef967a4 | 2585 | sqp->ud_header.vlan.type = cpu_to_be16(ether_type); |
4c3eb3ca EC |
2586 | sqp->ud_header.vlan.tag = cpu_to_be16(vlan | pcp); |
2587 | } | |
fa417f7b EC |
2588 | } else { |
2589 | sqp->ud_header.lrh.virtual_lane = !sqp->qp.ibqp.qp_num ? 15 : 0; | |
2590 | if (sqp->ud_header.lrh.destination_lid == IB_LID_PERMISSIVE) | |
2591 | sqp->ud_header.lrh.source_lid = IB_LID_PERMISSIVE; | |
2592 | } | |
e622f2f4 | 2593 | sqp->ud_header.bth.solicited_event = !!(wr->wr.send_flags & IB_SEND_SOLICITED); |
225c7b1f RD |
2594 | if (!sqp->qp.ibqp.qp_num) |
2595 | ib_get_cached_pkey(ib_dev, sqp->qp.port, sqp->pkey_index, &pkey); | |
2596 | else | |
e622f2f4 | 2597 | ib_get_cached_pkey(ib_dev, sqp->qp.port, wr->pkey_index, &pkey); |
225c7b1f | 2598 | sqp->ud_header.bth.pkey = cpu_to_be16(pkey); |
e622f2f4 | 2599 | sqp->ud_header.bth.destination_qpn = cpu_to_be32(wr->remote_qpn); |
225c7b1f | 2600 | sqp->ud_header.bth.psn = cpu_to_be32((sqp->send_psn++) & ((1 << 24) - 1)); |
e622f2f4 CH |
2601 | sqp->ud_header.deth.qkey = cpu_to_be32(wr->remote_qkey & 0x80000000 ? |
2602 | sqp->qkey : wr->remote_qkey); | |
225c7b1f RD |
2603 | sqp->ud_header.deth.source_qpn = cpu_to_be32(sqp->qp.ibqp.qp_num); |
2604 | ||
2605 | header_size = ib_ud_header_pack(&sqp->ud_header, sqp->header_buf); | |
2606 | ||
2607 | if (0) { | |
987c8f8f | 2608 | pr_err("built UD header of size %d:\n", header_size); |
225c7b1f RD |
2609 | for (i = 0; i < header_size / 4; ++i) { |
2610 | if (i % 8 == 0) | |
987c8f8f SP |
2611 | pr_err(" [%02x] ", i * 4); |
2612 | pr_cont(" %08x", | |
2613 | be32_to_cpu(((__be32 *) sqp->header_buf)[i])); | |
225c7b1f | 2614 | if ((i + 1) % 8 == 0) |
987c8f8f | 2615 | pr_cont("\n"); |
225c7b1f | 2616 | } |
987c8f8f | 2617 | pr_err("\n"); |
225c7b1f RD |
2618 | } |
2619 | ||
e61ef241 RD |
2620 | /* |
2621 | * Inline data segments may not cross a 64 byte boundary. If | |
2622 | * our UD header is bigger than the space available up to the | |
2623 | * next 64 byte boundary in the WQE, use two inline data | |
2624 | * segments to hold the UD header. | |
2625 | */ | |
2626 | spc = MLX4_INLINE_ALIGN - | |
2627 | ((unsigned long) (inl + 1) & (MLX4_INLINE_ALIGN - 1)); | |
2628 | if (header_size <= spc) { | |
2629 | inl->byte_count = cpu_to_be32(1 << 31 | header_size); | |
2630 | memcpy(inl + 1, sqp->header_buf, header_size); | |
2631 | i = 1; | |
2632 | } else { | |
2633 | inl->byte_count = cpu_to_be32(1 << 31 | spc); | |
2634 | memcpy(inl + 1, sqp->header_buf, spc); | |
2635 | ||
2636 | inl = (void *) (inl + 1) + spc; | |
2637 | memcpy(inl + 1, sqp->header_buf + spc, header_size - spc); | |
2638 | /* | |
2639 | * Need a barrier here to make sure all the data is | |
2640 | * visible before the byte_count field is set. | |
2641 | * Otherwise the HCA prefetcher could grab the 64-byte | |
2642 | * chunk with this inline segment and get a valid (!= | |
2643 | * 0xffffffff) byte count but stale data, and end up | |
2644 | * generating a packet with bad headers. | |
2645 | * | |
2646 | * The first inline segment's byte_count field doesn't | |
2647 | * need a barrier, because it comes after a | |
2648 | * control/MLX segment and therefore is at an offset | |
2649 | * of 16 mod 64. | |
2650 | */ | |
2651 | wmb(); | |
2652 | inl->byte_count = cpu_to_be32(1 << 31 | (header_size - spc)); | |
2653 | i = 2; | |
2654 | } | |
225c7b1f | 2655 | |
f438000f RD |
2656 | *mlx_seg_len = |
2657 | ALIGN(i * sizeof (struct mlx4_wqe_inline_seg) + header_size, 16); | |
2658 | return 0; | |
225c7b1f RD |
2659 | } |
2660 | ||
2661 | static int mlx4_wq_overflow(struct mlx4_ib_wq *wq, int nreq, struct ib_cq *ib_cq) | |
2662 | { | |
2663 | unsigned cur; | |
2664 | struct mlx4_ib_cq *cq; | |
2665 | ||
2666 | cur = wq->head - wq->tail; | |
0e6e7416 | 2667 | if (likely(cur + nreq < wq->max_post)) |
225c7b1f RD |
2668 | return 0; |
2669 | ||
2670 | cq = to_mcq(ib_cq); | |
2671 | spin_lock(&cq->lock); | |
2672 | cur = wq->head - wq->tail; | |
2673 | spin_unlock(&cq->lock); | |
2674 | ||
0e6e7416 | 2675 | return cur + nreq >= wq->max_post; |
225c7b1f RD |
2676 | } |
2677 | ||
95d04f07 RD |
2678 | static __be32 convert_access(int acc) |
2679 | { | |
6ff63e19 SM |
2680 | return (acc & IB_ACCESS_REMOTE_ATOMIC ? |
2681 | cpu_to_be32(MLX4_WQE_FMR_AND_BIND_PERM_ATOMIC) : 0) | | |
2682 | (acc & IB_ACCESS_REMOTE_WRITE ? | |
2683 | cpu_to_be32(MLX4_WQE_FMR_AND_BIND_PERM_REMOTE_WRITE) : 0) | | |
2684 | (acc & IB_ACCESS_REMOTE_READ ? | |
2685 | cpu_to_be32(MLX4_WQE_FMR_AND_BIND_PERM_REMOTE_READ) : 0) | | |
95d04f07 RD |
2686 | (acc & IB_ACCESS_LOCAL_WRITE ? cpu_to_be32(MLX4_WQE_FMR_PERM_LOCAL_WRITE) : 0) | |
2687 | cpu_to_be32(MLX4_WQE_FMR_PERM_LOCAL_READ); | |
2688 | } | |
2689 | ||
1b2cd0fc SG |
2690 | static void set_reg_seg(struct mlx4_wqe_fmr_seg *fseg, |
2691 | struct ib_reg_wr *wr) | |
2692 | { | |
2693 | struct mlx4_ib_mr *mr = to_mmr(wr->mr); | |
2694 | ||
2695 | fseg->flags = convert_access(wr->access); | |
2696 | fseg->mem_key = cpu_to_be32(wr->key); | |
2697 | fseg->buf_list = cpu_to_be64(mr->page_map); | |
2698 | fseg->start_addr = cpu_to_be64(mr->ibmr.iova); | |
2699 | fseg->reg_len = cpu_to_be64(mr->ibmr.length); | |
2700 | fseg->offset = 0; /* XXX -- is this just for ZBVA? */ | |
2701 | fseg->page_size = cpu_to_be32(ilog2(mr->ibmr.page_size)); | |
2702 | fseg->reserved[0] = 0; | |
2703 | fseg->reserved[1] = 0; | |
2704 | } | |
2705 | ||
95d04f07 RD |
2706 | static void set_local_inv_seg(struct mlx4_wqe_local_inval_seg *iseg, u32 rkey) |
2707 | { | |
aee38fad SM |
2708 | memset(iseg, 0, sizeof(*iseg)); |
2709 | iseg->mem_key = cpu_to_be32(rkey); | |
95d04f07 RD |
2710 | } |
2711 | ||
0fbfa6a9 RD |
2712 | static __always_inline void set_raddr_seg(struct mlx4_wqe_raddr_seg *rseg, |
2713 | u64 remote_addr, u32 rkey) | |
2714 | { | |
2715 | rseg->raddr = cpu_to_be64(remote_addr); | |
2716 | rseg->rkey = cpu_to_be32(rkey); | |
2717 | rseg->reserved = 0; | |
2718 | } | |
2719 | ||
e622f2f4 CH |
2720 | static void set_atomic_seg(struct mlx4_wqe_atomic_seg *aseg, |
2721 | struct ib_atomic_wr *wr) | |
0fbfa6a9 | 2722 | { |
e622f2f4 CH |
2723 | if (wr->wr.opcode == IB_WR_ATOMIC_CMP_AND_SWP) { |
2724 | aseg->swap_add = cpu_to_be64(wr->swap); | |
2725 | aseg->compare = cpu_to_be64(wr->compare_add); | |
2726 | } else if (wr->wr.opcode == IB_WR_MASKED_ATOMIC_FETCH_AND_ADD) { | |
2727 | aseg->swap_add = cpu_to_be64(wr->compare_add); | |
2728 | aseg->compare = cpu_to_be64(wr->compare_add_mask); | |
0fbfa6a9 | 2729 | } else { |
e622f2f4 | 2730 | aseg->swap_add = cpu_to_be64(wr->compare_add); |
0fbfa6a9 RD |
2731 | aseg->compare = 0; |
2732 | } | |
2733 | ||
2734 | } | |
2735 | ||
6fa8f719 | 2736 | static void set_masked_atomic_seg(struct mlx4_wqe_masked_atomic_seg *aseg, |
e622f2f4 | 2737 | struct ib_atomic_wr *wr) |
6fa8f719 | 2738 | { |
e622f2f4 CH |
2739 | aseg->swap_add = cpu_to_be64(wr->swap); |
2740 | aseg->swap_add_mask = cpu_to_be64(wr->swap_mask); | |
2741 | aseg->compare = cpu_to_be64(wr->compare_add); | |
2742 | aseg->compare_mask = cpu_to_be64(wr->compare_add_mask); | |
6fa8f719 VS |
2743 | } |
2744 | ||
0fbfa6a9 | 2745 | static void set_datagram_seg(struct mlx4_wqe_datagram_seg *dseg, |
e622f2f4 | 2746 | struct ib_ud_wr *wr) |
0fbfa6a9 | 2747 | { |
e622f2f4 CH |
2748 | memcpy(dseg->av, &to_mah(wr->ah)->av, sizeof (struct mlx4_av)); |
2749 | dseg->dqpn = cpu_to_be32(wr->remote_qpn); | |
2750 | dseg->qkey = cpu_to_be32(wr->remote_qkey); | |
2751 | dseg->vlan = to_mah(wr->ah)->av.eth.vlan; | |
2752 | memcpy(dseg->mac, to_mah(wr->ah)->av.eth.mac, 6); | |
0fbfa6a9 RD |
2753 | } |
2754 | ||
1ffeb2eb JM |
2755 | static void set_tunnel_datagram_seg(struct mlx4_ib_dev *dev, |
2756 | struct mlx4_wqe_datagram_seg *dseg, | |
e622f2f4 | 2757 | struct ib_ud_wr *wr, |
97982f5a | 2758 | enum mlx4_ib_qp_type qpt) |
1ffeb2eb | 2759 | { |
e622f2f4 | 2760 | union mlx4_ext_av *av = &to_mah(wr->ah)->av; |
1ffeb2eb JM |
2761 | struct mlx4_av sqp_av = {0}; |
2762 | int port = *((u8 *) &av->ib.port_pd) & 0x3; | |
2763 | ||
2764 | /* force loopback */ | |
2765 | sqp_av.port_pd = av->ib.port_pd | cpu_to_be32(0x80000000); | |
2766 | sqp_av.g_slid = av->ib.g_slid & 0x7f; /* no GRH */ | |
2767 | sqp_av.sl_tclass_flowlabel = av->ib.sl_tclass_flowlabel & | |
2768 | cpu_to_be32(0xf0000000); | |
2769 | ||
2770 | memcpy(dseg->av, &sqp_av, sizeof (struct mlx4_av)); | |
97982f5a JM |
2771 | if (qpt == MLX4_IB_QPT_PROXY_GSI) |
2772 | dseg->dqpn = cpu_to_be32(dev->dev->caps.qp1_tunnel[port - 1]); | |
2773 | else | |
2774 | dseg->dqpn = cpu_to_be32(dev->dev->caps.qp0_tunnel[port - 1]); | |
47605df9 JM |
2775 | /* Use QKEY from the QP context, which is set by master */ |
2776 | dseg->qkey = cpu_to_be32(IB_QP_SET_QKEY); | |
1ffeb2eb JM |
2777 | } |
2778 | ||
e622f2f4 | 2779 | static void build_tunnel_header(struct ib_ud_wr *wr, void *wqe, unsigned *mlx_seg_len) |
1ffeb2eb JM |
2780 | { |
2781 | struct mlx4_wqe_inline_seg *inl = wqe; | |
2782 | struct mlx4_ib_tunnel_header hdr; | |
e622f2f4 | 2783 | struct mlx4_ib_ah *ah = to_mah(wr->ah); |
1ffeb2eb JM |
2784 | int spc; |
2785 | int i; | |
2786 | ||
2787 | memcpy(&hdr.av, &ah->av, sizeof hdr.av); | |
e622f2f4 CH |
2788 | hdr.remote_qpn = cpu_to_be32(wr->remote_qpn); |
2789 | hdr.pkey_index = cpu_to_be16(wr->pkey_index); | |
2790 | hdr.qkey = cpu_to_be32(wr->remote_qkey); | |
5ea8bbfc JM |
2791 | memcpy(hdr.mac, ah->av.eth.mac, 6); |
2792 | hdr.vlan = ah->av.eth.vlan; | |
1ffeb2eb JM |
2793 | |
2794 | spc = MLX4_INLINE_ALIGN - | |
2795 | ((unsigned long) (inl + 1) & (MLX4_INLINE_ALIGN - 1)); | |
2796 | if (sizeof (hdr) <= spc) { | |
2797 | memcpy(inl + 1, &hdr, sizeof (hdr)); | |
2798 | wmb(); | |
2799 | inl->byte_count = cpu_to_be32(1 << 31 | sizeof (hdr)); | |
2800 | i = 1; | |
2801 | } else { | |
2802 | memcpy(inl + 1, &hdr, spc); | |
2803 | wmb(); | |
2804 | inl->byte_count = cpu_to_be32(1 << 31 | spc); | |
2805 | ||
2806 | inl = (void *) (inl + 1) + spc; | |
2807 | memcpy(inl + 1, (void *) &hdr + spc, sizeof (hdr) - spc); | |
2808 | wmb(); | |
2809 | inl->byte_count = cpu_to_be32(1 << 31 | (sizeof (hdr) - spc)); | |
2810 | i = 2; | |
2811 | } | |
2812 | ||
2813 | *mlx_seg_len = | |
2814 | ALIGN(i * sizeof (struct mlx4_wqe_inline_seg) + sizeof (hdr), 16); | |
2815 | } | |
2816 | ||
6e694ea3 JM |
2817 | static void set_mlx_icrc_seg(void *dseg) |
2818 | { | |
2819 | u32 *t = dseg; | |
2820 | struct mlx4_wqe_inline_seg *iseg = dseg; | |
2821 | ||
2822 | t[1] = 0; | |
2823 | ||
2824 | /* | |
2825 | * Need a barrier here before writing the byte_count field to | |
2826 | * make sure that all the data is visible before the | |
2827 | * byte_count field is set. Otherwise, if the segment begins | |
2828 | * a new cacheline, the HCA prefetcher could grab the 64-byte | |
2829 | * chunk and get a valid (!= * 0xffffffff) byte count but | |
2830 | * stale data, and end up sending the wrong data. | |
2831 | */ | |
2832 | wmb(); | |
2833 | ||
2834 | iseg->byte_count = cpu_to_be32((1 << 31) | 4); | |
2835 | } | |
2836 | ||
2837 | static void set_data_seg(struct mlx4_wqe_data_seg *dseg, struct ib_sge *sg) | |
d420d9e3 | 2838 | { |
d420d9e3 RD |
2839 | dseg->lkey = cpu_to_be32(sg->lkey); |
2840 | dseg->addr = cpu_to_be64(sg->addr); | |
6e694ea3 JM |
2841 | |
2842 | /* | |
2843 | * Need a barrier here before writing the byte_count field to | |
2844 | * make sure that all the data is visible before the | |
2845 | * byte_count field is set. Otherwise, if the segment begins | |
2846 | * a new cacheline, the HCA prefetcher could grab the 64-byte | |
2847 | * chunk and get a valid (!= * 0xffffffff) byte count but | |
2848 | * stale data, and end up sending the wrong data. | |
2849 | */ | |
2850 | wmb(); | |
2851 | ||
2852 | dseg->byte_count = cpu_to_be32(sg->length); | |
d420d9e3 RD |
2853 | } |
2854 | ||
2242fa4f RD |
2855 | static void __set_data_seg(struct mlx4_wqe_data_seg *dseg, struct ib_sge *sg) |
2856 | { | |
2857 | dseg->byte_count = cpu_to_be32(sg->length); | |
2858 | dseg->lkey = cpu_to_be32(sg->lkey); | |
2859 | dseg->addr = cpu_to_be64(sg->addr); | |
2860 | } | |
2861 | ||
e622f2f4 | 2862 | static int build_lso_seg(struct mlx4_wqe_lso_seg *wqe, struct ib_ud_wr *wr, |
0fd7e1d8 | 2863 | struct mlx4_ib_qp *qp, unsigned *lso_seg_len, |
417608c2 | 2864 | __be32 *lso_hdr_sz, __be32 *blh) |
b832be1e | 2865 | { |
e622f2f4 | 2866 | unsigned halign = ALIGN(sizeof *wqe + wr->hlen, 16); |
b832be1e | 2867 | |
417608c2 EC |
2868 | if (unlikely(halign > MLX4_IB_CACHE_LINE_SIZE)) |
2869 | *blh = cpu_to_be32(1 << 6); | |
b832be1e EC |
2870 | |
2871 | if (unlikely(!(qp->flags & MLX4_IB_QP_LSO) && | |
e622f2f4 | 2872 | wr->wr.num_sge > qp->sq.max_gs - (halign >> 4))) |
b832be1e EC |
2873 | return -EINVAL; |
2874 | ||
e622f2f4 | 2875 | memcpy(wqe->header, wr->header, wr->hlen); |
b832be1e | 2876 | |
e622f2f4 | 2877 | *lso_hdr_sz = cpu_to_be32(wr->mss << 16 | wr->hlen); |
b832be1e EC |
2878 | *lso_seg_len = halign; |
2879 | return 0; | |
2880 | } | |
2881 | ||
95d04f07 RD |
2882 | static __be32 send_ieth(struct ib_send_wr *wr) |
2883 | { | |
2884 | switch (wr->opcode) { | |
2885 | case IB_WR_SEND_WITH_IMM: | |
2886 | case IB_WR_RDMA_WRITE_WITH_IMM: | |
2887 | return wr->ex.imm_data; | |
2888 | ||
2889 | case IB_WR_SEND_WITH_INV: | |
2890 | return cpu_to_be32(wr->ex.invalidate_rkey); | |
2891 | ||
2892 | default: | |
2893 | return 0; | |
2894 | } | |
2895 | } | |
2896 | ||
1ffeb2eb JM |
2897 | static void add_zero_len_inline(void *wqe) |
2898 | { | |
2899 | struct mlx4_wqe_inline_seg *inl = wqe; | |
2900 | memset(wqe, 0, 16); | |
2901 | inl->byte_count = cpu_to_be32(1 << 31); | |
2902 | } | |
2903 | ||
225c7b1f RD |
2904 | int mlx4_ib_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr, |
2905 | struct ib_send_wr **bad_wr) | |
2906 | { | |
2907 | struct mlx4_ib_qp *qp = to_mqp(ibqp); | |
2908 | void *wqe; | |
2909 | struct mlx4_wqe_ctrl_seg *ctrl; | |
6e694ea3 | 2910 | struct mlx4_wqe_data_seg *dseg; |
225c7b1f RD |
2911 | unsigned long flags; |
2912 | int nreq; | |
2913 | int err = 0; | |
ea54b10c JM |
2914 | unsigned ind; |
2915 | int uninitialized_var(stamp); | |
2916 | int uninitialized_var(size); | |
a3d8e159 | 2917 | unsigned uninitialized_var(seglen); |
0fd7e1d8 RD |
2918 | __be32 dummy; |
2919 | __be32 *lso_wqe; | |
2920 | __be32 uninitialized_var(lso_hdr_sz); | |
417608c2 | 2921 | __be32 blh; |
225c7b1f | 2922 | int i; |
35f05dab | 2923 | struct mlx4_ib_dev *mdev = to_mdev(ibqp->device); |
225c7b1f | 2924 | |
e1b866c6 MS |
2925 | if (qp->mlx4_ib_qp_type == MLX4_IB_QPT_GSI) { |
2926 | struct mlx4_ib_sqp *sqp = to_msqp(qp); | |
2927 | ||
2928 | if (sqp->roce_v2_gsi) { | |
2929 | struct mlx4_ib_ah *ah = to_mah(ud_wr(wr)->ah); | |
2930 | struct ib_gid_attr gid_attr; | |
2931 | union ib_gid gid; | |
2932 | ||
2933 | if (!ib_get_cached_gid(ibqp->device, | |
2934 | be32_to_cpu(ah->av.ib.port_pd) >> 24, | |
2935 | ah->av.ib.gid_index, &gid, | |
2936 | &gid_attr)) { | |
2937 | if (gid_attr.ndev) | |
2938 | dev_put(gid_attr.ndev); | |
2939 | qp = (gid_attr.gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP) ? | |
2940 | to_mqp(sqp->roce_v2_gsi) : qp; | |
2941 | } else { | |
2942 | pr_err("Failed to get gid at index %d. RoCEv2 will not work properly\n", | |
2943 | ah->av.ib.gid_index); | |
2944 | } | |
2945 | } | |
2946 | } | |
2947 | ||
96db0e03 | 2948 | spin_lock_irqsave(&qp->sq.lock, flags); |
35f05dab YH |
2949 | if (mdev->dev->persist->state & MLX4_DEVICE_STATE_INTERNAL_ERROR) { |
2950 | err = -EIO; | |
2951 | *bad_wr = wr; | |
2952 | nreq = 0; | |
2953 | goto out; | |
2954 | } | |
225c7b1f | 2955 | |
ea54b10c | 2956 | ind = qp->sq_next_wqe; |
225c7b1f RD |
2957 | |
2958 | for (nreq = 0; wr; ++nreq, wr = wr->next) { | |
0fd7e1d8 | 2959 | lso_wqe = &dummy; |
417608c2 | 2960 | blh = 0; |
0fd7e1d8 | 2961 | |
225c7b1f RD |
2962 | if (mlx4_wq_overflow(&qp->sq, nreq, qp->ibqp.send_cq)) { |
2963 | err = -ENOMEM; | |
2964 | *bad_wr = wr; | |
2965 | goto out; | |
2966 | } | |
2967 | ||
2968 | if (unlikely(wr->num_sge > qp->sq.max_gs)) { | |
2969 | err = -EINVAL; | |
2970 | *bad_wr = wr; | |
2971 | goto out; | |
2972 | } | |
2973 | ||
0e6e7416 | 2974 | ctrl = wqe = get_send_wqe(qp, ind & (qp->sq.wqe_cnt - 1)); |
ea54b10c | 2975 | qp->sq.wrid[(qp->sq.head + nreq) & (qp->sq.wqe_cnt - 1)] = wr->wr_id; |
225c7b1f RD |
2976 | |
2977 | ctrl->srcrb_flags = | |
2978 | (wr->send_flags & IB_SEND_SIGNALED ? | |
2979 | cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE) : 0) | | |
2980 | (wr->send_flags & IB_SEND_SOLICITED ? | |
2981 | cpu_to_be32(MLX4_WQE_CTRL_SOLICITED) : 0) | | |
8ff095ec EC |
2982 | ((wr->send_flags & IB_SEND_IP_CSUM) ? |
2983 | cpu_to_be32(MLX4_WQE_CTRL_IP_CSUM | | |
2984 | MLX4_WQE_CTRL_TCP_UDP_CSUM) : 0) | | |
225c7b1f RD |
2985 | qp->sq_signal_bits; |
2986 | ||
95d04f07 | 2987 | ctrl->imm = send_ieth(wr); |
225c7b1f RD |
2988 | |
2989 | wqe += sizeof *ctrl; | |
2990 | size = sizeof *ctrl / 16; | |
2991 | ||
1ffeb2eb JM |
2992 | switch (qp->mlx4_ib_qp_type) { |
2993 | case MLX4_IB_QPT_RC: | |
2994 | case MLX4_IB_QPT_UC: | |
225c7b1f RD |
2995 | switch (wr->opcode) { |
2996 | case IB_WR_ATOMIC_CMP_AND_SWP: | |
2997 | case IB_WR_ATOMIC_FETCH_AND_ADD: | |
6fa8f719 | 2998 | case IB_WR_MASKED_ATOMIC_FETCH_AND_ADD: |
e622f2f4 CH |
2999 | set_raddr_seg(wqe, atomic_wr(wr)->remote_addr, |
3000 | atomic_wr(wr)->rkey); | |
225c7b1f RD |
3001 | wqe += sizeof (struct mlx4_wqe_raddr_seg); |
3002 | ||
e622f2f4 | 3003 | set_atomic_seg(wqe, atomic_wr(wr)); |
225c7b1f | 3004 | wqe += sizeof (struct mlx4_wqe_atomic_seg); |
0fbfa6a9 | 3005 | |
225c7b1f RD |
3006 | size += (sizeof (struct mlx4_wqe_raddr_seg) + |
3007 | sizeof (struct mlx4_wqe_atomic_seg)) / 16; | |
6fa8f719 VS |
3008 | |
3009 | break; | |
3010 | ||
3011 | case IB_WR_MASKED_ATOMIC_CMP_AND_SWP: | |
e622f2f4 CH |
3012 | set_raddr_seg(wqe, atomic_wr(wr)->remote_addr, |
3013 | atomic_wr(wr)->rkey); | |
6fa8f719 VS |
3014 | wqe += sizeof (struct mlx4_wqe_raddr_seg); |
3015 | ||
e622f2f4 | 3016 | set_masked_atomic_seg(wqe, atomic_wr(wr)); |
6fa8f719 VS |
3017 | wqe += sizeof (struct mlx4_wqe_masked_atomic_seg); |
3018 | ||
3019 | size += (sizeof (struct mlx4_wqe_raddr_seg) + | |
3020 | sizeof (struct mlx4_wqe_masked_atomic_seg)) / 16; | |
225c7b1f RD |
3021 | |
3022 | break; | |
3023 | ||
3024 | case IB_WR_RDMA_READ: | |
3025 | case IB_WR_RDMA_WRITE: | |
3026 | case IB_WR_RDMA_WRITE_WITH_IMM: | |
e622f2f4 CH |
3027 | set_raddr_seg(wqe, rdma_wr(wr)->remote_addr, |
3028 | rdma_wr(wr)->rkey); | |
225c7b1f RD |
3029 | wqe += sizeof (struct mlx4_wqe_raddr_seg); |
3030 | size += sizeof (struct mlx4_wqe_raddr_seg) / 16; | |
225c7b1f | 3031 | break; |
95d04f07 RD |
3032 | |
3033 | case IB_WR_LOCAL_INV: | |
2ac6bf4d JM |
3034 | ctrl->srcrb_flags |= |
3035 | cpu_to_be32(MLX4_WQE_CTRL_STRONG_ORDER); | |
95d04f07 RD |
3036 | set_local_inv_seg(wqe, wr->ex.invalidate_rkey); |
3037 | wqe += sizeof (struct mlx4_wqe_local_inval_seg); | |
3038 | size += sizeof (struct mlx4_wqe_local_inval_seg) / 16; | |
3039 | break; | |
3040 | ||
1b2cd0fc SG |
3041 | case IB_WR_REG_MR: |
3042 | ctrl->srcrb_flags |= | |
3043 | cpu_to_be32(MLX4_WQE_CTRL_STRONG_ORDER); | |
3044 | set_reg_seg(wqe, reg_wr(wr)); | |
3045 | wqe += sizeof(struct mlx4_wqe_fmr_seg); | |
3046 | size += sizeof(struct mlx4_wqe_fmr_seg) / 16; | |
3047 | break; | |
3048 | ||
225c7b1f RD |
3049 | default: |
3050 | /* No extra segments required for sends */ | |
3051 | break; | |
3052 | } | |
3053 | break; | |
3054 | ||
1ffeb2eb | 3055 | case MLX4_IB_QPT_TUN_SMI_OWNER: |
e622f2f4 CH |
3056 | err = build_sriov_qp0_header(to_msqp(qp), ud_wr(wr), |
3057 | ctrl, &seglen); | |
1ffeb2eb JM |
3058 | if (unlikely(err)) { |
3059 | *bad_wr = wr; | |
3060 | goto out; | |
3061 | } | |
3062 | wqe += seglen; | |
3063 | size += seglen / 16; | |
3064 | break; | |
3065 | case MLX4_IB_QPT_TUN_SMI: | |
3066 | case MLX4_IB_QPT_TUN_GSI: | |
3067 | /* this is a UD qp used in MAD responses to slaves. */ | |
e622f2f4 | 3068 | set_datagram_seg(wqe, ud_wr(wr)); |
1ffeb2eb JM |
3069 | /* set the forced-loopback bit in the data seg av */ |
3070 | *(__be32 *) wqe |= cpu_to_be32(0x80000000); | |
3071 | wqe += sizeof (struct mlx4_wqe_datagram_seg); | |
3072 | size += sizeof (struct mlx4_wqe_datagram_seg) / 16; | |
3073 | break; | |
3074 | case MLX4_IB_QPT_UD: | |
e622f2f4 | 3075 | set_datagram_seg(wqe, ud_wr(wr)); |
225c7b1f RD |
3076 | wqe += sizeof (struct mlx4_wqe_datagram_seg); |
3077 | size += sizeof (struct mlx4_wqe_datagram_seg) / 16; | |
b832be1e EC |
3078 | |
3079 | if (wr->opcode == IB_WR_LSO) { | |
e622f2f4 CH |
3080 | err = build_lso_seg(wqe, ud_wr(wr), qp, &seglen, |
3081 | &lso_hdr_sz, &blh); | |
b832be1e EC |
3082 | if (unlikely(err)) { |
3083 | *bad_wr = wr; | |
3084 | goto out; | |
3085 | } | |
0fd7e1d8 | 3086 | lso_wqe = (__be32 *) wqe; |
b832be1e EC |
3087 | wqe += seglen; |
3088 | size += seglen / 16; | |
3089 | } | |
225c7b1f RD |
3090 | break; |
3091 | ||
1ffeb2eb | 3092 | case MLX4_IB_QPT_PROXY_SMI_OWNER: |
e622f2f4 CH |
3093 | err = build_sriov_qp0_header(to_msqp(qp), ud_wr(wr), |
3094 | ctrl, &seglen); | |
1ffeb2eb JM |
3095 | if (unlikely(err)) { |
3096 | *bad_wr = wr; | |
3097 | goto out; | |
3098 | } | |
3099 | wqe += seglen; | |
3100 | size += seglen / 16; | |
3101 | /* to start tunnel header on a cache-line boundary */ | |
3102 | add_zero_len_inline(wqe); | |
3103 | wqe += 16; | |
3104 | size++; | |
e622f2f4 | 3105 | build_tunnel_header(ud_wr(wr), wqe, &seglen); |
1ffeb2eb JM |
3106 | wqe += seglen; |
3107 | size += seglen / 16; | |
3108 | break; | |
3109 | case MLX4_IB_QPT_PROXY_SMI: | |
1ffeb2eb JM |
3110 | case MLX4_IB_QPT_PROXY_GSI: |
3111 | /* If we are tunneling special qps, this is a UD qp. | |
3112 | * In this case we first add a UD segment targeting | |
3113 | * the tunnel qp, and then add a header with address | |
3114 | * information */ | |
e622f2f4 CH |
3115 | set_tunnel_datagram_seg(to_mdev(ibqp->device), wqe, |
3116 | ud_wr(wr), | |
97982f5a | 3117 | qp->mlx4_ib_qp_type); |
1ffeb2eb JM |
3118 | wqe += sizeof (struct mlx4_wqe_datagram_seg); |
3119 | size += sizeof (struct mlx4_wqe_datagram_seg) / 16; | |
e622f2f4 | 3120 | build_tunnel_header(ud_wr(wr), wqe, &seglen); |
1ffeb2eb JM |
3121 | wqe += seglen; |
3122 | size += seglen / 16; | |
3123 | break; | |
3124 | ||
3125 | case MLX4_IB_QPT_SMI: | |
3126 | case MLX4_IB_QPT_GSI: | |
e622f2f4 CH |
3127 | err = build_mlx_header(to_msqp(qp), ud_wr(wr), ctrl, |
3128 | &seglen); | |
f438000f | 3129 | if (unlikely(err)) { |
225c7b1f RD |
3130 | *bad_wr = wr; |
3131 | goto out; | |
3132 | } | |
f438000f RD |
3133 | wqe += seglen; |
3134 | size += seglen / 16; | |
225c7b1f RD |
3135 | break; |
3136 | ||
3137 | default: | |
3138 | break; | |
3139 | } | |
3140 | ||
6e694ea3 JM |
3141 | /* |
3142 | * Write data segments in reverse order, so as to | |
3143 | * overwrite cacheline stamp last within each | |
3144 | * cacheline. This avoids issues with WQE | |
3145 | * prefetching. | |
3146 | */ | |
225c7b1f | 3147 | |
6e694ea3 JM |
3148 | dseg = wqe; |
3149 | dseg += wr->num_sge - 1; | |
3150 | size += wr->num_sge * (sizeof (struct mlx4_wqe_data_seg) / 16); | |
225c7b1f RD |
3151 | |
3152 | /* Add one more inline data segment for ICRC for MLX sends */ | |
1ffeb2eb JM |
3153 | if (unlikely(qp->mlx4_ib_qp_type == MLX4_IB_QPT_SMI || |
3154 | qp->mlx4_ib_qp_type == MLX4_IB_QPT_GSI || | |
3155 | qp->mlx4_ib_qp_type & | |
3156 | (MLX4_IB_QPT_PROXY_SMI_OWNER | MLX4_IB_QPT_TUN_SMI_OWNER))) { | |
6e694ea3 | 3157 | set_mlx_icrc_seg(dseg + 1); |
225c7b1f RD |
3158 | size += sizeof (struct mlx4_wqe_data_seg) / 16; |
3159 | } | |
3160 | ||
6e694ea3 JM |
3161 | for (i = wr->num_sge - 1; i >= 0; --i, --dseg) |
3162 | set_data_seg(dseg, wr->sg_list + i); | |
3163 | ||
0fd7e1d8 RD |
3164 | /* |
3165 | * Possibly overwrite stamping in cacheline with LSO | |
3166 | * segment only after making sure all data segments | |
3167 | * are written. | |
3168 | */ | |
3169 | wmb(); | |
3170 | *lso_wqe = lso_hdr_sz; | |
3171 | ||
225c7b1f RD |
3172 | ctrl->fence_size = (wr->send_flags & IB_SEND_FENCE ? |
3173 | MLX4_WQE_CTRL_FENCE : 0) | size; | |
3174 | ||
3175 | /* | |
3176 | * Make sure descriptor is fully written before | |
3177 | * setting ownership bit (because HW can start | |
3178 | * executing as soon as we do). | |
3179 | */ | |
3180 | wmb(); | |
3181 | ||
59b0ed12 | 3182 | if (wr->opcode < 0 || wr->opcode >= ARRAY_SIZE(mlx4_ib_opcode)) { |
4ba6b8ea | 3183 | *bad_wr = wr; |
225c7b1f RD |
3184 | err = -EINVAL; |
3185 | goto out; | |
3186 | } | |
3187 | ||
3188 | ctrl->owner_opcode = mlx4_ib_opcode[wr->opcode] | | |
417608c2 | 3189 | (ind & qp->sq.wqe_cnt ? cpu_to_be32(1 << 31) : 0) | blh; |
0e6e7416 | 3190 | |
ea54b10c JM |
3191 | stamp = ind + qp->sq_spare_wqes; |
3192 | ind += DIV_ROUND_UP(size * 16, 1U << qp->sq.wqe_shift); | |
3193 | ||
0e6e7416 RD |
3194 | /* |
3195 | * We can improve latency by not stamping the last | |
3196 | * send queue WQE until after ringing the doorbell, so | |
3197 | * only stamp here if there are still more WQEs to post. | |
ea54b10c JM |
3198 | * |
3199 | * Same optimization applies to padding with NOP wqe | |
3200 | * in case of WQE shrinking (used to prevent wrap-around | |
3201 | * in the middle of WR). | |
0e6e7416 | 3202 | */ |
ea54b10c JM |
3203 | if (wr->next) { |
3204 | stamp_send_wqe(qp, stamp, size * 16); | |
3205 | ind = pad_wraparound(qp, ind); | |
3206 | } | |
225c7b1f RD |
3207 | } |
3208 | ||
3209 | out: | |
3210 | if (likely(nreq)) { | |
3211 | qp->sq.head += nreq; | |
3212 | ||
3213 | /* | |
3214 | * Make sure that descriptors are written before | |
3215 | * doorbell record. | |
3216 | */ | |
3217 | wmb(); | |
3218 | ||
3219 | writel(qp->doorbell_qpn, | |
3220 | to_mdev(ibqp->device)->uar_map + MLX4_SEND_DOORBELL); | |
3221 | ||
3222 | /* | |
3223 | * Make sure doorbells don't leak out of SQ spinlock | |
3224 | * and reach the HCA out of order. | |
3225 | */ | |
3226 | mmiowb(); | |
0e6e7416 | 3227 | |
ea54b10c JM |
3228 | stamp_send_wqe(qp, stamp, size * 16); |
3229 | ||
3230 | ind = pad_wraparound(qp, ind); | |
3231 | qp->sq_next_wqe = ind; | |
225c7b1f RD |
3232 | } |
3233 | ||
96db0e03 | 3234 | spin_unlock_irqrestore(&qp->sq.lock, flags); |
225c7b1f RD |
3235 | |
3236 | return err; | |
3237 | } | |
3238 | ||
3239 | int mlx4_ib_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *wr, | |
3240 | struct ib_recv_wr **bad_wr) | |
3241 | { | |
3242 | struct mlx4_ib_qp *qp = to_mqp(ibqp); | |
3243 | struct mlx4_wqe_data_seg *scat; | |
3244 | unsigned long flags; | |
3245 | int err = 0; | |
3246 | int nreq; | |
3247 | int ind; | |
1ffeb2eb | 3248 | int max_gs; |
225c7b1f | 3249 | int i; |
35f05dab | 3250 | struct mlx4_ib_dev *mdev = to_mdev(ibqp->device); |
225c7b1f | 3251 | |
1ffeb2eb | 3252 | max_gs = qp->rq.max_gs; |
225c7b1f RD |
3253 | spin_lock_irqsave(&qp->rq.lock, flags); |
3254 | ||
35f05dab YH |
3255 | if (mdev->dev->persist->state & MLX4_DEVICE_STATE_INTERNAL_ERROR) { |
3256 | err = -EIO; | |
3257 | *bad_wr = wr; | |
3258 | nreq = 0; | |
3259 | goto out; | |
3260 | } | |
3261 | ||
0e6e7416 | 3262 | ind = qp->rq.head & (qp->rq.wqe_cnt - 1); |
225c7b1f RD |
3263 | |
3264 | for (nreq = 0; wr; ++nreq, wr = wr->next) { | |
2b946077 | 3265 | if (mlx4_wq_overflow(&qp->rq, nreq, qp->ibqp.recv_cq)) { |
225c7b1f RD |
3266 | err = -ENOMEM; |
3267 | *bad_wr = wr; | |
3268 | goto out; | |
3269 | } | |
3270 | ||
3271 | if (unlikely(wr->num_sge > qp->rq.max_gs)) { | |
3272 | err = -EINVAL; | |
3273 | *bad_wr = wr; | |
3274 | goto out; | |
3275 | } | |
3276 | ||
3277 | scat = get_recv_wqe(qp, ind); | |
3278 | ||
1ffeb2eb JM |
3279 | if (qp->mlx4_ib_qp_type & (MLX4_IB_QPT_PROXY_SMI_OWNER | |
3280 | MLX4_IB_QPT_PROXY_SMI | MLX4_IB_QPT_PROXY_GSI)) { | |
3281 | ib_dma_sync_single_for_device(ibqp->device, | |
3282 | qp->sqp_proxy_rcv[ind].map, | |
3283 | sizeof (struct mlx4_ib_proxy_sqp_hdr), | |
3284 | DMA_FROM_DEVICE); | |
3285 | scat->byte_count = | |
3286 | cpu_to_be32(sizeof (struct mlx4_ib_proxy_sqp_hdr)); | |
3287 | /* use dma lkey from upper layer entry */ | |
3288 | scat->lkey = cpu_to_be32(wr->sg_list->lkey); | |
3289 | scat->addr = cpu_to_be64(qp->sqp_proxy_rcv[ind].map); | |
3290 | scat++; | |
3291 | max_gs--; | |
3292 | } | |
3293 | ||
2242fa4f RD |
3294 | for (i = 0; i < wr->num_sge; ++i) |
3295 | __set_data_seg(scat + i, wr->sg_list + i); | |
225c7b1f | 3296 | |
1ffeb2eb | 3297 | if (i < max_gs) { |
225c7b1f RD |
3298 | scat[i].byte_count = 0; |
3299 | scat[i].lkey = cpu_to_be32(MLX4_INVALID_LKEY); | |
3300 | scat[i].addr = 0; | |
3301 | } | |
3302 | ||
3303 | qp->rq.wrid[ind] = wr->wr_id; | |
3304 | ||
0e6e7416 | 3305 | ind = (ind + 1) & (qp->rq.wqe_cnt - 1); |
225c7b1f RD |
3306 | } |
3307 | ||
3308 | out: | |
3309 | if (likely(nreq)) { | |
3310 | qp->rq.head += nreq; | |
3311 | ||
3312 | /* | |
3313 | * Make sure that descriptors are written before | |
3314 | * doorbell record. | |
3315 | */ | |
3316 | wmb(); | |
3317 | ||
3318 | *qp->db.db = cpu_to_be32(qp->rq.head & 0xffff); | |
3319 | } | |
3320 | ||
3321 | spin_unlock_irqrestore(&qp->rq.lock, flags); | |
3322 | ||
3323 | return err; | |
3324 | } | |
6a775e2b JM |
3325 | |
3326 | static inline enum ib_qp_state to_ib_qp_state(enum mlx4_qp_state mlx4_state) | |
3327 | { | |
3328 | switch (mlx4_state) { | |
3329 | case MLX4_QP_STATE_RST: return IB_QPS_RESET; | |
3330 | case MLX4_QP_STATE_INIT: return IB_QPS_INIT; | |
3331 | case MLX4_QP_STATE_RTR: return IB_QPS_RTR; | |
3332 | case MLX4_QP_STATE_RTS: return IB_QPS_RTS; | |
3333 | case MLX4_QP_STATE_SQ_DRAINING: | |
3334 | case MLX4_QP_STATE_SQD: return IB_QPS_SQD; | |
3335 | case MLX4_QP_STATE_SQER: return IB_QPS_SQE; | |
3336 | case MLX4_QP_STATE_ERR: return IB_QPS_ERR; | |
3337 | default: return -1; | |
3338 | } | |
3339 | } | |
3340 | ||
3341 | static inline enum ib_mig_state to_ib_mig_state(int mlx4_mig_state) | |
3342 | { | |
3343 | switch (mlx4_mig_state) { | |
3344 | case MLX4_QP_PM_ARMED: return IB_MIG_ARMED; | |
3345 | case MLX4_QP_PM_REARM: return IB_MIG_REARM; | |
3346 | case MLX4_QP_PM_MIGRATED: return IB_MIG_MIGRATED; | |
3347 | default: return -1; | |
3348 | } | |
3349 | } | |
3350 | ||
3351 | static int to_ib_qp_access_flags(int mlx4_flags) | |
3352 | { | |
3353 | int ib_flags = 0; | |
3354 | ||
3355 | if (mlx4_flags & MLX4_QP_BIT_RRE) | |
3356 | ib_flags |= IB_ACCESS_REMOTE_READ; | |
3357 | if (mlx4_flags & MLX4_QP_BIT_RWE) | |
3358 | ib_flags |= IB_ACCESS_REMOTE_WRITE; | |
3359 | if (mlx4_flags & MLX4_QP_BIT_RAE) | |
3360 | ib_flags |= IB_ACCESS_REMOTE_ATOMIC; | |
3361 | ||
3362 | return ib_flags; | |
3363 | } | |
3364 | ||
4c3eb3ca | 3365 | static void to_ib_ah_attr(struct mlx4_ib_dev *ibdev, struct ib_ah_attr *ib_ah_attr, |
6a775e2b JM |
3366 | struct mlx4_qp_path *path) |
3367 | { | |
4c3eb3ca EC |
3368 | struct mlx4_dev *dev = ibdev->dev; |
3369 | int is_eth; | |
3370 | ||
8fcea95a | 3371 | memset(ib_ah_attr, 0, sizeof *ib_ah_attr); |
6a775e2b JM |
3372 | ib_ah_attr->port_num = path->sched_queue & 0x40 ? 2 : 1; |
3373 | ||
3374 | if (ib_ah_attr->port_num == 0 || ib_ah_attr->port_num > dev->caps.num_ports) | |
3375 | return; | |
3376 | ||
4c3eb3ca EC |
3377 | is_eth = rdma_port_get_link_layer(&ibdev->ib_dev, ib_ah_attr->port_num) == |
3378 | IB_LINK_LAYER_ETHERNET; | |
3379 | if (is_eth) | |
3380 | ib_ah_attr->sl = ((path->sched_queue >> 3) & 0x7) | | |
3381 | ((path->sched_queue & 4) << 1); | |
3382 | else | |
3383 | ib_ah_attr->sl = (path->sched_queue >> 2) & 0xf; | |
3384 | ||
6a775e2b | 3385 | ib_ah_attr->dlid = be16_to_cpu(path->rlid); |
6a775e2b JM |
3386 | ib_ah_attr->src_path_bits = path->grh_mylmc & 0x7f; |
3387 | ib_ah_attr->static_rate = path->static_rate ? path->static_rate - 5 : 0; | |
3388 | ib_ah_attr->ah_flags = (path->grh_mylmc & (1 << 7)) ? IB_AH_GRH : 0; | |
3389 | if (ib_ah_attr->ah_flags) { | |
3390 | ib_ah_attr->grh.sgid_index = path->mgid_index; | |
3391 | ib_ah_attr->grh.hop_limit = path->hop_limit; | |
3392 | ib_ah_attr->grh.traffic_class = | |
3393 | (be32_to_cpu(path->tclass_flowlabel) >> 20) & 0xff; | |
3394 | ib_ah_attr->grh.flow_label = | |
586bb586 | 3395 | be32_to_cpu(path->tclass_flowlabel) & 0xfffff; |
6a775e2b JM |
3396 | memcpy(ib_ah_attr->grh.dgid.raw, |
3397 | path->rgid, sizeof ib_ah_attr->grh.dgid.raw); | |
3398 | } | |
3399 | } | |
3400 | ||
3401 | int mlx4_ib_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr, int qp_attr_mask, | |
3402 | struct ib_qp_init_attr *qp_init_attr) | |
3403 | { | |
3404 | struct mlx4_ib_dev *dev = to_mdev(ibqp->device); | |
3405 | struct mlx4_ib_qp *qp = to_mqp(ibqp); | |
3406 | struct mlx4_qp_context context; | |
3407 | int mlx4_state; | |
0df67030 DB |
3408 | int err = 0; |
3409 | ||
3410 | mutex_lock(&qp->mutex); | |
6a775e2b JM |
3411 | |
3412 | if (qp->state == IB_QPS_RESET) { | |
3413 | qp_attr->qp_state = IB_QPS_RESET; | |
3414 | goto done; | |
3415 | } | |
3416 | ||
3417 | err = mlx4_qp_query(dev->dev, &qp->mqp, &context); | |
0df67030 DB |
3418 | if (err) { |
3419 | err = -EINVAL; | |
3420 | goto out; | |
3421 | } | |
6a775e2b JM |
3422 | |
3423 | mlx4_state = be32_to_cpu(context.flags) >> 28; | |
3424 | ||
0df67030 DB |
3425 | qp->state = to_ib_qp_state(mlx4_state); |
3426 | qp_attr->qp_state = qp->state; | |
6a775e2b JM |
3427 | qp_attr->path_mtu = context.mtu_msgmax >> 5; |
3428 | qp_attr->path_mig_state = | |
3429 | to_ib_mig_state((be32_to_cpu(context.flags) >> 11) & 0x3); | |
3430 | qp_attr->qkey = be32_to_cpu(context.qkey); | |
3431 | qp_attr->rq_psn = be32_to_cpu(context.rnr_nextrecvpsn) & 0xffffff; | |
3432 | qp_attr->sq_psn = be32_to_cpu(context.next_send_psn) & 0xffffff; | |
3433 | qp_attr->dest_qp_num = be32_to_cpu(context.remote_qpn) & 0xffffff; | |
3434 | qp_attr->qp_access_flags = | |
3435 | to_ib_qp_access_flags(be32_to_cpu(context.params2)); | |
3436 | ||
3437 | if (qp->ibqp.qp_type == IB_QPT_RC || qp->ibqp.qp_type == IB_QPT_UC) { | |
4c3eb3ca EC |
3438 | to_ib_ah_attr(dev, &qp_attr->ah_attr, &context.pri_path); |
3439 | to_ib_ah_attr(dev, &qp_attr->alt_ah_attr, &context.alt_path); | |
6a775e2b JM |
3440 | qp_attr->alt_pkey_index = context.alt_path.pkey_index & 0x7f; |
3441 | qp_attr->alt_port_num = qp_attr->alt_ah_attr.port_num; | |
3442 | } | |
3443 | ||
3444 | qp_attr->pkey_index = context.pri_path.pkey_index & 0x7f; | |
1c27cb71 JM |
3445 | if (qp_attr->qp_state == IB_QPS_INIT) |
3446 | qp_attr->port_num = qp->port; | |
3447 | else | |
3448 | qp_attr->port_num = context.pri_path.sched_queue & 0x40 ? 2 : 1; | |
6a775e2b JM |
3449 | |
3450 | /* qp_attr->en_sqd_async_notify is only applicable in modify qp */ | |
3451 | qp_attr->sq_draining = mlx4_state == MLX4_QP_STATE_SQ_DRAINING; | |
3452 | ||
3453 | qp_attr->max_rd_atomic = 1 << ((be32_to_cpu(context.params1) >> 21) & 0x7); | |
3454 | ||
3455 | qp_attr->max_dest_rd_atomic = | |
3456 | 1 << ((be32_to_cpu(context.params2) >> 21) & 0x7); | |
3457 | qp_attr->min_rnr_timer = | |
3458 | (be32_to_cpu(context.rnr_nextrecvpsn) >> 24) & 0x1f; | |
3459 | qp_attr->timeout = context.pri_path.ackto >> 3; | |
3460 | qp_attr->retry_cnt = (be32_to_cpu(context.params1) >> 16) & 0x7; | |
3461 | qp_attr->rnr_retry = (be32_to_cpu(context.params1) >> 13) & 0x7; | |
3462 | qp_attr->alt_timeout = context.alt_path.ackto >> 3; | |
3463 | ||
3464 | done: | |
3465 | qp_attr->cur_qp_state = qp_attr->qp_state; | |
7f5eb9bb RD |
3466 | qp_attr->cap.max_recv_wr = qp->rq.wqe_cnt; |
3467 | qp_attr->cap.max_recv_sge = qp->rq.max_gs; | |
3468 | ||
6a775e2b | 3469 | if (!ibqp->uobject) { |
7f5eb9bb RD |
3470 | qp_attr->cap.max_send_wr = qp->sq.wqe_cnt; |
3471 | qp_attr->cap.max_send_sge = qp->sq.max_gs; | |
3472 | } else { | |
3473 | qp_attr->cap.max_send_wr = 0; | |
3474 | qp_attr->cap.max_send_sge = 0; | |
6a775e2b JM |
3475 | } |
3476 | ||
7f5eb9bb RD |
3477 | /* |
3478 | * We don't support inline sends for kernel QPs (yet), and we | |
3479 | * don't know what userspace's value should be. | |
3480 | */ | |
3481 | qp_attr->cap.max_inline_data = 0; | |
3482 | ||
3483 | qp_init_attr->cap = qp_attr->cap; | |
3484 | ||
521e575b RL |
3485 | qp_init_attr->create_flags = 0; |
3486 | if (qp->flags & MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK) | |
3487 | qp_init_attr->create_flags |= IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK; | |
3488 | ||
3489 | if (qp->flags & MLX4_IB_QP_LSO) | |
3490 | qp_init_attr->create_flags |= IB_QP_CREATE_IPOIB_UD_LSO; | |
3491 | ||
c1c98501 MB |
3492 | if (qp->flags & MLX4_IB_QP_NETIF) |
3493 | qp_init_attr->create_flags |= IB_QP_CREATE_NETIF_QP; | |
3494 | ||
46db567d DB |
3495 | qp_init_attr->sq_sig_type = |
3496 | qp->sq_signal_bits == cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE) ? | |
3497 | IB_SIGNAL_ALL_WR : IB_SIGNAL_REQ_WR; | |
3498 | ||
0df67030 DB |
3499 | out: |
3500 | mutex_unlock(&qp->mutex); | |
3501 | return err; | |
6a775e2b JM |
3502 | } |
3503 |