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IB/mlx4: Use correct order of variables in log message
[linux-2.6-block.git] / drivers / infiniband / hw / mlx4 / qp.c
CommitLineData
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>
5a0e3ad6 35#include <linux/slab.h>
fa417f7b 36#include <linux/netdevice.h>
ea54b10c 37
225c7b1f
RD		 38#include <rdma/ib_cache.h>
39#include <rdma/ib_pack.h>
4c3eb3ca 40#include <rdma/ib_addr.h>
1ffeb2eb 41#include <rdma/ib_mad.h>
225c7b1f 42
2f48485d 43#include <linux/mlx4/driver.h>
225c7b1f
RD		 44#include <linux/mlx4/qp.h>
45
46#include "mlx4_ib.h"
47#include "user.h"
48
35f05dab
YH		 49static void mlx4_ib_lock_cqs(struct mlx4_ib_cq *send_cq,
50 struct mlx4_ib_cq *recv_cq);
51static void mlx4_ib_unlock_cqs(struct mlx4_ib_cq *send_cq,
52 struct mlx4_ib_cq *recv_cq);
53
225c7b1f
RD		 54enum {
55 MLX4_IB_ACK_REQ_FREQ = 8,
56};
57
58enum {
59 MLX4_IB_DEFAULT_SCHED_QUEUE = 0x83,
fa417f7b
EC		 60 MLX4_IB_DEFAULT_QP0_SCHED_QUEUE = 0x3f,
61 MLX4_IB_LINK_TYPE_IB = 0,
62 MLX4_IB_LINK_TYPE_ETH = 1
225c7b1f
RD		 63};
64
65enum {
66 /*
fa417f7b 67 * Largest possible UD header: send with GRH and immediate
4c3eb3ca
EC		 68 * data plus 18 bytes for an Ethernet header with VLAN/802.1Q
69 * tag. (LRH would only use 8 bytes, so Ethernet is the
70 * biggest case)
225c7b1f 71 */
4c3eb3ca 72 MLX4_IB_UD_HEADER_SIZE = 82,
417608c2 73 MLX4_IB_LSO_HEADER_SPARE = 128,
225c7b1f
RD		 74};
75
fa417f7b
EC		 76enum {
77 MLX4_IB_IBOE_ETHERTYPE = 0x8915
78};
79
225c7b1f
RD		 80struct mlx4_ib_sqp {
81 struct mlx4_ib_qp qp;
82 int pkey_index;
83 u32 qkey;
84 u32 send_psn;
85 struct ib_ud_header ud_header;
86 u8 header_buf[MLX4_IB_UD_HEADER_SIZE];
87};
88
83904132 89enum {
417608c2
EC		 90 MLX4_IB_MIN_SQ_STRIDE = 6,
91 MLX4_IB_CACHE_LINE_SIZE = 64,
83904132
JM		 92};
93
3987a2d3
OG		 94enum {
95 MLX4_RAW_QP_MTU = 7,
96 MLX4_RAW_QP_MSGMAX = 31,
97};
98
297e0dad
MS		 99#ifndef ETH_ALEN
100#define ETH_ALEN 6
101#endif
297e0dad 102
225c7b1f 103static const __be32 mlx4_ib_opcode[] = {
6fa8f719
VS		 104 [IB_WR_SEND] = cpu_to_be32(MLX4_OPCODE_SEND),
105 [IB_WR_LSO] = cpu_to_be32(MLX4_OPCODE_LSO),
106 [IB_WR_SEND_WITH_IMM] = cpu_to_be32(MLX4_OPCODE_SEND_IMM),
107 [IB_WR_RDMA_WRITE] = cpu_to_be32(MLX4_OPCODE_RDMA_WRITE),
108 [IB_WR_RDMA_WRITE_WITH_IMM] = cpu_to_be32(MLX4_OPCODE_RDMA_WRITE_IMM),
109 [IB_WR_RDMA_READ] = cpu_to_be32(MLX4_OPCODE_RDMA_READ),
110 [IB_WR_ATOMIC_CMP_AND_SWP] = cpu_to_be32(MLX4_OPCODE_ATOMIC_CS),
111 [IB_WR_ATOMIC_FETCH_AND_ADD] = cpu_to_be32(MLX4_OPCODE_ATOMIC_FA),
112 [IB_WR_SEND_WITH_INV] = cpu_to_be32(MLX4_OPCODE_SEND_INVAL),
113 [IB_WR_LOCAL_INV] = cpu_to_be32(MLX4_OPCODE_LOCAL_INVAL),
1b2cd0fc 114 [IB_WR_REG_MR] = cpu_to_be32(MLX4_OPCODE_FMR),
6fa8f719
VS		 115 [IB_WR_MASKED_ATOMIC_CMP_AND_SWP] = cpu_to_be32(MLX4_OPCODE_MASKED_ATOMIC_CS),
116 [IB_WR_MASKED_ATOMIC_FETCH_AND_ADD] = cpu_to_be32(MLX4_OPCODE_MASKED_ATOMIC_FA),
6ff63e19 117 [IB_WR_BIND_MW] = cpu_to_be32(MLX4_OPCODE_BIND_MW),
225c7b1f
RD		 118};
119
120static struct mlx4_ib_sqp *to_msqp(struct mlx4_ib_qp *mqp)
121{
122 return container_of(mqp, struct mlx4_ib_sqp, qp);
123}
124
1ffeb2eb
JM		 125static int is_tunnel_qp(struct mlx4_ib_dev *dev, struct mlx4_ib_qp *qp)
126{
127 if (!mlx4_is_master(dev->dev))
128 return 0;
129
47605df9
JM		 130 return qp->mqp.qpn >= dev->dev->phys_caps.base_tunnel_sqpn &&
131 qp->mqp.qpn < dev->dev->phys_caps.base_tunnel_sqpn +
132 8 * MLX4_MFUNC_MAX;
1ffeb2eb
JM		 133}
134
225c7b1f
RD		 135static int is_sqp(struct mlx4_ib_dev *dev, struct mlx4_ib_qp *qp)
136{
47605df9
JM		 137 int proxy_sqp = 0;
138 int real_sqp = 0;
139 int i;
140 /* PPF or Native -- real SQP */
141 real_sqp = ((mlx4_is_master(dev->dev) || !mlx4_is_mfunc(dev->dev)) &&
142 qp->mqp.qpn >= dev->dev->phys_caps.base_sqpn &&
143 qp->mqp.qpn <= dev->dev->phys_caps.base_sqpn + 3);
144 if (real_sqp)
145 return 1;
146 /* VF or PF -- proxy SQP */
147 if (mlx4_is_mfunc(dev->dev)) {
148 for (i = 0; i < dev->dev->caps.num_ports; i++) {
149 if (qp->mqp.qpn == dev->dev->caps.qp0_proxy[i] ||
150 qp->mqp.qpn == dev->dev->caps.qp1_proxy[i]) {
151 proxy_sqp = 1;
152 break;
153 }
154 }
155 }
156 return proxy_sqp;
225c7b1f
RD		 157}
158
1ffeb2eb 159/* used for INIT/CLOSE port logic */
225c7b1f
RD		 160static int is_qp0(struct mlx4_ib_dev *dev, struct mlx4_ib_qp *qp)
161{
47605df9
JM		 162 int proxy_qp0 = 0;
163 int real_qp0 = 0;
164 int i;
165 /* PPF or Native -- real QP0 */
166 real_qp0 = ((mlx4_is_master(dev->dev) || !mlx4_is_mfunc(dev->dev)) &&
167 qp->mqp.qpn >= dev->dev->phys_caps.base_sqpn &&
168 qp->mqp.qpn <= dev->dev->phys_caps.base_sqpn + 1);
169 if (real_qp0)
170 return 1;
171 /* VF or PF -- proxy QP0 */
172 if (mlx4_is_mfunc(dev->dev)) {
173 for (i = 0; i < dev->dev->caps.num_ports; i++) {
174 if (qp->mqp.qpn == dev->dev->caps.qp0_proxy[i]) {
175 proxy_qp0 = 1;
176 break;
177 }
178 }
179 }
180 return proxy_qp0;
225c7b1f
RD		 181}
182
183static void *get_wqe(struct mlx4_ib_qp *qp, int offset)
184{
1c69fc2a 185 return mlx4_buf_offset(&qp->buf, offset);
225c7b1f
RD		 186}
187
188static void *get_recv_wqe(struct mlx4_ib_qp *qp, int n)
189{
190 return get_wqe(qp, qp->rq.offset + (n << qp->rq.wqe_shift));
191}
192
193static void *get_send_wqe(struct mlx4_ib_qp *qp, int n)
194{
195 return get_wqe(qp, qp->sq.offset + (n << qp->sq.wqe_shift));
196}
197
0e6e7416
RD		 198/*
199 * Stamp a SQ WQE so that it is invalid if prefetched by marking the
ea54b10c
JM		 200 * first four bytes of every 64 byte chunk with
201 * 0x7FFFFFF | (invalid_ownership_value << 31).
202 *
203 * When the max work request size is less than or equal to the WQE
204 * basic block size, as an optimization, we can stamp all WQEs with
205 * 0xffffffff, and skip the very first chunk of each WQE.
0e6e7416 206 */
ea54b10c 207static void stamp_send_wqe(struct mlx4_ib_qp *qp, int n, int size)
0e6e7416 208{
d2ae16d5 209 __be32 *wqe;
0e6e7416 210 int i;
ea54b10c
JM		 211 int s;
212 int ind;
213 void *buf;
214 __be32 stamp;
9670e553 215 struct mlx4_wqe_ctrl_seg *ctrl;
ea54b10c 216
ea54b10c 217 if (qp->sq_max_wqes_per_wr > 1) {
9670e553 218 s = roundup(size, 1U << qp->sq.wqe_shift);
ea54b10c
JM		 219 for (i = 0; i < s; i += 64) {
220 ind = (i >> qp->sq.wqe_shift) + n;
221 stamp = ind & qp->sq.wqe_cnt ? cpu_to_be32(0x7fffffff) :
222 cpu_to_be32(0xffffffff);
223 buf = get_send_wqe(qp, ind & (qp->sq.wqe_cnt - 1));
224 wqe = buf + (i & ((1 << qp->sq.wqe_shift) - 1));
225 *wqe = stamp;
226 }
227 } else {
9670e553
EC		 228 ctrl = buf = get_send_wqe(qp, n & (qp->sq.wqe_cnt - 1));
229 s = (ctrl->fence_size & 0x3f) << 4;
ea54b10c
JM		 230 for (i = 64; i < s; i += 64) {
231 wqe = buf + i;
d2ae16d5 232 *wqe = cpu_to_be32(0xffffffff);
ea54b10c
JM		 233 }
234 }
235}
236
237static void post_nop_wqe(struct mlx4_ib_qp *qp, int n, int size)
238{
239 struct mlx4_wqe_ctrl_seg *ctrl;
240 struct mlx4_wqe_inline_seg *inl;
241 void *wqe;
242 int s;
243
244 ctrl = wqe = get_send_wqe(qp, n & (qp->sq.wqe_cnt - 1));
245 s = sizeof(struct mlx4_wqe_ctrl_seg);
246
247 if (qp->ibqp.qp_type == IB_QPT_UD) {
248 struct mlx4_wqe_datagram_seg *dgram = wqe + sizeof *ctrl;
249 struct mlx4_av *av = (struct mlx4_av *)dgram->av;
250 memset(dgram, 0, sizeof *dgram);
251 av->port_pd = cpu_to_be32((qp->port << 24) | to_mpd(qp->ibqp.pd)->pdn);
252 s += sizeof(struct mlx4_wqe_datagram_seg);
253 }
254
255 /* Pad the remainder of the WQE with an inline data segment. */
256 if (size > s) {
257 inl = wqe + s;
258 inl->byte_count = cpu_to_be32(1 << 31 | (size - s - sizeof *inl));
259 }
260 ctrl->srcrb_flags = 0;
261 ctrl->fence_size = size / 16;
262 /*
263 * Make sure descriptor is fully written before setting ownership bit
264 * (because HW can start executing as soon as we do).
265 */
266 wmb();
267
268 ctrl->owner_opcode = cpu_to_be32(MLX4_OPCODE_NOP | MLX4_WQE_CTRL_NEC) |
269 (n & qp->sq.wqe_cnt ? cpu_to_be32(1 << 31) : 0);
0e6e7416 270
ea54b10c
JM		 271 stamp_send_wqe(qp, n + qp->sq_spare_wqes, size);
272}
273
274/* Post NOP WQE to prevent wrap-around in the middle of WR */
275static inline unsigned pad_wraparound(struct mlx4_ib_qp *qp, int ind)
276{
277 unsigned s = qp->sq.wqe_cnt - (ind & (qp->sq.wqe_cnt - 1));
278 if (unlikely(s < qp->sq_max_wqes_per_wr)) {
279 post_nop_wqe(qp, ind, s << qp->sq.wqe_shift);
280 ind += s;
281 }
282 return ind;
0e6e7416
RD		 283}
284
225c7b1f
RD		 285static void mlx4_ib_qp_event(struct mlx4_qp *qp, enum mlx4_event type)
286{
287 struct ib_event event;
288 struct ib_qp *ibqp = &to_mibqp(qp)->ibqp;
289
290 if (type == MLX4_EVENT_TYPE_PATH_MIG)
291 to_mibqp(qp)->port = to_mibqp(qp)->alt_port;
292
293 if (ibqp->event_handler) {
294 event.device = ibqp->device;
295 event.element.qp = ibqp;
296 switch (type) {
297 case MLX4_EVENT_TYPE_PATH_MIG:
298 event.event = IB_EVENT_PATH_MIG;
299 break;
300 case MLX4_EVENT_TYPE_COMM_EST:
301 event.event = IB_EVENT_COMM_EST;
302 break;
303 case MLX4_EVENT_TYPE_SQ_DRAINED:
304 event.event = IB_EVENT_SQ_DRAINED;
305 break;
306 case MLX4_EVENT_TYPE_SRQ_QP_LAST_WQE:
307 event.event = IB_EVENT_QP_LAST_WQE_REACHED;
308 break;
309 case MLX4_EVENT_TYPE_WQ_CATAS_ERROR:
310 event.event = IB_EVENT_QP_FATAL;
311 break;
312 case MLX4_EVENT_TYPE_PATH_MIG_FAILED:
313 event.event = IB_EVENT_PATH_MIG_ERR;
314 break;
315 case MLX4_EVENT_TYPE_WQ_INVAL_REQ_ERROR:
316 event.event = IB_EVENT_QP_REQ_ERR;
317 break;
318 case MLX4_EVENT_TYPE_WQ_ACCESS_ERROR:
319 event.event = IB_EVENT_QP_ACCESS_ERR;
320 break;
321 default:
987c8f8f 322 pr_warn("Unexpected event type %d "
225c7b1f
RD		 323 "on QP %06x\n", type, qp->qpn);
324 return;
325 }
326
327 ibqp->event_handler(&event, ibqp->qp_context);
328 }
329}
330
1ffeb2eb 331static int send_wqe_overhead(enum mlx4_ib_qp_type type, u32 flags)
225c7b1f
RD		 332{
333 /*
334 * UD WQEs must have a datagram segment.
335 * RC and UC WQEs might have a remote address segment.
336 * MLX WQEs need two extra inline data segments (for the UD
337 * header and space for the ICRC).
338 */
339 switch (type) {
1ffeb2eb 340 case MLX4_IB_QPT_UD:
225c7b1f 341 return sizeof (struct mlx4_wqe_ctrl_seg) +
b832be1e 342 sizeof (struct mlx4_wqe_datagram_seg) +
417608c2 343 ((flags & MLX4_IB_QP_LSO) ? MLX4_IB_LSO_HEADER_SPARE : 0);
1ffeb2eb
JM		 344 case MLX4_IB_QPT_PROXY_SMI_OWNER:
345 case MLX4_IB_QPT_PROXY_SMI:
346 case MLX4_IB_QPT_PROXY_GSI:
347 return sizeof (struct mlx4_wqe_ctrl_seg) +
348 sizeof (struct mlx4_wqe_datagram_seg) + 64;
349 case MLX4_IB_QPT_TUN_SMI_OWNER:
350 case MLX4_IB_QPT_TUN_GSI:
351 return sizeof (struct mlx4_wqe_ctrl_seg) +
352 sizeof (struct mlx4_wqe_datagram_seg);
353
354 case MLX4_IB_QPT_UC:
225c7b1f
RD		 355 return sizeof (struct mlx4_wqe_ctrl_seg) +
356 sizeof (struct mlx4_wqe_raddr_seg);
1ffeb2eb 357 case MLX4_IB_QPT_RC:
225c7b1f
RD		 358 return sizeof (struct mlx4_wqe_ctrl_seg) +
359 sizeof (struct mlx4_wqe_atomic_seg) +
360 sizeof (struct mlx4_wqe_raddr_seg);
1ffeb2eb
JM		 361 case MLX4_IB_QPT_SMI:
362 case MLX4_IB_QPT_GSI:
225c7b1f
RD		 363 return sizeof (struct mlx4_wqe_ctrl_seg) +
364 ALIGN(MLX4_IB_UD_HEADER_SIZE +
e61ef241
RD		 365 DIV_ROUND_UP(MLX4_IB_UD_HEADER_SIZE,
366 MLX4_INLINE_ALIGN) *
225c7b1f
RD		 367 sizeof (struct mlx4_wqe_inline_seg),
368 sizeof (struct mlx4_wqe_data_seg)) +
369 ALIGN(4 +
370 sizeof (struct mlx4_wqe_inline_seg),
371 sizeof (struct mlx4_wqe_data_seg));
372 default:
373 return sizeof (struct mlx4_wqe_ctrl_seg);
374 }
375}
376
2446304d 377static int set_rq_size(struct mlx4_ib_dev *dev, struct ib_qp_cap *cap,
0a1405da 378 int is_user, int has_rq, struct mlx4_ib_qp *qp)
225c7b1f 379{
2446304d 380 /* Sanity check RQ size before proceeding */
fc2d0044
SG		 381 if (cap->max_recv_wr > dev->dev->caps.max_wqes - MLX4_IB_SQ_MAX_SPARE ||
382 cap->max_recv_sge > min(dev->dev->caps.max_sq_sg, dev->dev->caps.max_rq_sg))
2446304d
EC		 383 return -EINVAL;
384
0a1405da 385 if (!has_rq) {
a4cd7ed8
RD		 386 if (cap->max_recv_wr)
387 return -EINVAL;
2446304d 388
0e6e7416 389 qp->rq.wqe_cnt = qp->rq.max_gs = 0;
a4cd7ed8
RD		 390 } else {
391 /* HW requires >= 1 RQ entry with >= 1 gather entry */
392 if (is_user && (!cap->max_recv_wr || !cap->max_recv_sge))
393 return -EINVAL;
394
0e6e7416 395 qp->rq.wqe_cnt = roundup_pow_of_two(max(1U, cap->max_recv_wr));
42c059ea 396 qp->rq.max_gs = roundup_pow_of_two(max(1U, cap->max_recv_sge));
a4cd7ed8
RD		 397 qp->rq.wqe_shift = ilog2(qp->rq.max_gs * sizeof (struct mlx4_wqe_data_seg));
398 }
2446304d 399
fc2d0044
SG		 400 /* leave userspace return values as they were, so as not to break ABI */
401 if (is_user) {
402 cap->max_recv_wr = qp->rq.max_post = qp->rq.wqe_cnt;
403 cap->max_recv_sge = qp->rq.max_gs;
404 } else {
405 cap->max_recv_wr = qp->rq.max_post =
406 min(dev->dev->caps.max_wqes - MLX4_IB_SQ_MAX_SPARE, qp->rq.wqe_cnt);
407 cap->max_recv_sge = min(qp->rq.max_gs,
408 min(dev->dev->caps.max_sq_sg,
409 dev->dev->caps.max_rq_sg));
410 }
2446304d
EC		 411
412 return 0;
413}
414
415static int set_kernel_sq_size(struct mlx4_ib_dev *dev, struct ib_qp_cap *cap,
1ffeb2eb 416 enum mlx4_ib_qp_type type, struct mlx4_ib_qp *qp)
2446304d 417{
ea54b10c
JM		 418 int s;
419
2446304d 420 /* Sanity check SQ size before proceeding */
fc2d0044
SG		 421 if (cap->max_send_wr > (dev->dev->caps.max_wqes - MLX4_IB_SQ_MAX_SPARE) ||
422 cap->max_send_sge > min(dev->dev->caps.max_sq_sg, dev->dev->caps.max_rq_sg) ||
b832be1e 423 cap->max_inline_data + send_wqe_overhead(type, qp->flags) +
225c7b1f
RD		 424 sizeof (struct mlx4_wqe_inline_seg) > dev->dev->caps.max_sq_desc_sz)
425 return -EINVAL;
426
427 /*
428 * For MLX transport we need 2 extra S/G entries:
429 * one for the header and one for the checksum at the end
430 */
1ffeb2eb
JM		 431 if ((type == MLX4_IB_QPT_SMI || type == MLX4_IB_QPT_GSI ||
432 type & (MLX4_IB_QPT_PROXY_SMI_OWNER | MLX4_IB_QPT_TUN_SMI_OWNER)) &&
225c7b1f
RD		 433 cap->max_send_sge + 2 > dev->dev->caps.max_sq_sg)
434 return -EINVAL;
435
ea54b10c
JM		 436 s = max(cap->max_send_sge * sizeof (struct mlx4_wqe_data_seg),
437 cap->max_inline_data + sizeof (struct mlx4_wqe_inline_seg)) +
b832be1e 438 send_wqe_overhead(type, qp->flags);
225c7b1f 439
cd155c1c
RD		 440 if (s > dev->dev->caps.max_sq_desc_sz)
441 return -EINVAL;
442
0e6e7416 443 /*
ea54b10c
JM		 444 * Hermon supports shrinking WQEs, such that a single work
445 * request can include multiple units of 1 << wqe_shift. This
446 * way, work requests can differ in size, and do not have to
447 * be a power of 2 in size, saving memory and speeding up send
448 * WR posting. Unfortunately, if we do this then the
449 * wqe_index field in CQEs can't be used to look up the WR ID
450 * anymore, so we do this only if selective signaling is off.
451 *
452 * Further, on 32-bit platforms, we can't use vmap() to make
af901ca1 453 * the QP buffer virtually contiguous. Thus we have to use
ea54b10c
JM		 454 * constant-sized WRs to make sure a WR is always fully within
455 * a single page-sized chunk.
456 *
457 * Finally, we use NOP work requests to pad the end of the
458 * work queue, to avoid wrap-around in the middle of WR. We
459 * set NEC bit to avoid getting completions with error for
460 * these NOP WRs, but since NEC is only supported starting
461 * with firmware 2.2.232, we use constant-sized WRs for older
462 * firmware.
463 *
464 * And, since MLX QPs only support SEND, we use constant-sized
465 * WRs in this case.
466 *
467 * We look for the smallest value of wqe_shift such that the
468 * resulting number of wqes does not exceed device
469 * capabilities.
470 *
471 * We set WQE size to at least 64 bytes, this way stamping
472 * invalidates each WQE.
0e6e7416 473 */
ea54b10c
JM		 474 if (dev->dev->caps.fw_ver >= MLX4_FW_VER_WQE_CTRL_NEC &&
475 qp->sq_signal_bits && BITS_PER_LONG == 64 &&
1ffeb2eb
JM		 476 type != MLX4_IB_QPT_SMI && type != MLX4_IB_QPT_GSI &&
477 !(type & (MLX4_IB_QPT_PROXY_SMI_OWNER | MLX4_IB_QPT_PROXY_SMI |
478 MLX4_IB_QPT_PROXY_GSI | MLX4_IB_QPT_TUN_SMI_OWNER)))
ea54b10c
JM		 479 qp->sq.wqe_shift = ilog2(64);
480 else
481 qp->sq.wqe_shift = ilog2(roundup_pow_of_two(s));
482
483 for (;;) {
ea54b10c
JM		 484 qp->sq_max_wqes_per_wr = DIV_ROUND_UP(s, 1U << qp->sq.wqe_shift);
485
486 /*
487 * We need to leave 2 KB + 1 WR of headroom in the SQ to
488 * allow HW to prefetch.
489 */
490 qp->sq_spare_wqes = (2048 >> qp->sq.wqe_shift) + qp->sq_max_wqes_per_wr;
491 qp->sq.wqe_cnt = roundup_pow_of_two(cap->max_send_wr *
492 qp->sq_max_wqes_per_wr +
493 qp->sq_spare_wqes);
494
495 if (qp->sq.wqe_cnt <= dev->dev->caps.max_wqes)
496 break;
497
498 if (qp->sq_max_wqes_per_wr <= 1)
499 return -EINVAL;
500
501 ++qp->sq.wqe_shift;
502 }
503
cd155c1c
RD		 504 qp->sq.max_gs = (min(dev->dev->caps.max_sq_desc_sz,
505 (qp->sq_max_wqes_per_wr << qp->sq.wqe_shift)) -
b832be1e
EC		 506 send_wqe_overhead(type, qp->flags)) /
507 sizeof (struct mlx4_wqe_data_seg);
0e6e7416
RD		 508
509 qp->buf_size = (qp->rq.wqe_cnt << qp->rq.wqe_shift) +
510 (qp->sq.wqe_cnt << qp->sq.wqe_shift);
225c7b1f
RD		 511 if (qp->rq.wqe_shift > qp->sq.wqe_shift) {
512 qp->rq.offset = 0;
0e6e7416 513 qp->sq.offset = qp->rq.wqe_cnt << qp->rq.wqe_shift;
225c7b1f 514 } else {
0e6e7416 515 qp->rq.offset = qp->sq.wqe_cnt << qp->sq.wqe_shift;
225c7b1f
RD		 516 qp->sq.offset = 0;
517 }
518
ea54b10c
JM		 519 cap->max_send_wr = qp->sq.max_post =
520 (qp->sq.wqe_cnt - qp->sq_spare_wqes) / qp->sq_max_wqes_per_wr;
cd155c1c
RD		 521 cap->max_send_sge = min(qp->sq.max_gs,
522 min(dev->dev->caps.max_sq_sg,
523 dev->dev->caps.max_rq_sg));
54e95f8d
RD		 524 /* We don't support inline sends for kernel QPs (yet) */
525 cap->max_inline_data = 0;
225c7b1f
RD		 526
527 return 0;
528}
529
83904132
JM		 530static int set_user_sq_size(struct mlx4_ib_dev *dev,
531 struct mlx4_ib_qp *qp,
2446304d
EC		 532 struct mlx4_ib_create_qp *ucmd)
533{
83904132
JM		 534 /* Sanity check SQ size before proceeding */
535 if ((1 << ucmd->log_sq_bb_count) > dev->dev->caps.max_wqes ||
536 ucmd->log_sq_stride >
537 ilog2(roundup_pow_of_two(dev->dev->caps.max_sq_desc_sz)) ||
538 ucmd->log_sq_stride < MLX4_IB_MIN_SQ_STRIDE)
539 return -EINVAL;
540
0e6e7416 541 qp->sq.wqe_cnt = 1 << ucmd->log_sq_bb_count;
2446304d
EC		 542 qp->sq.wqe_shift = ucmd->log_sq_stride;
543
0e6e7416
RD		 544 qp->buf_size = (qp->rq.wqe_cnt << qp->rq.wqe_shift) +
545 (qp->sq.wqe_cnt << qp->sq.wqe_shift);
2446304d
EC		 546
547 return 0;
548}
549
1ffeb2eb
JM		 550static int alloc_proxy_bufs(struct ib_device *dev, struct mlx4_ib_qp *qp)
551{
552 int i;
553
554 qp->sqp_proxy_rcv =
555 kmalloc(sizeof (struct mlx4_ib_buf) * qp->rq.wqe_cnt,
556 GFP_KERNEL);
557 if (!qp->sqp_proxy_rcv)
558 return -ENOMEM;
559 for (i = 0; i < qp->rq.wqe_cnt; i++) {
560 qp->sqp_proxy_rcv[i].addr =
561 kmalloc(sizeof (struct mlx4_ib_proxy_sqp_hdr),
562 GFP_KERNEL);
563 if (!qp->sqp_proxy_rcv[i].addr)
564 goto err;
565 qp->sqp_proxy_rcv[i].map =
566 ib_dma_map_single(dev, qp->sqp_proxy_rcv[i].addr,
567 sizeof (struct mlx4_ib_proxy_sqp_hdr),
568 DMA_FROM_DEVICE);
cc47d369
SO		 569 if (ib_dma_mapping_error(dev, qp->sqp_proxy_rcv[i].map)) {
570 kfree(qp->sqp_proxy_rcv[i].addr);
571 goto err;
572 }
1ffeb2eb
JM		 573 }
574 return 0;
575
576err:
577 while (i > 0) {
578 --i;
579 ib_dma_unmap_single(dev, qp->sqp_proxy_rcv[i].map,
580 sizeof (struct mlx4_ib_proxy_sqp_hdr),
581 DMA_FROM_DEVICE);
582 kfree(qp->sqp_proxy_rcv[i].addr);
583 }
584 kfree(qp->sqp_proxy_rcv);
585 qp->sqp_proxy_rcv = NULL;
586 return -ENOMEM;
587}
588
589static void free_proxy_bufs(struct ib_device *dev, struct mlx4_ib_qp *qp)
590{
591 int i;
592
593 for (i = 0; i < qp->rq.wqe_cnt; i++) {
594 ib_dma_unmap_single(dev, qp->sqp_proxy_rcv[i].map,
595 sizeof (struct mlx4_ib_proxy_sqp_hdr),
596 DMA_FROM_DEVICE);
597 kfree(qp->sqp_proxy_rcv[i].addr);
598 }
599 kfree(qp->sqp_proxy_rcv);
600}
601
0a1405da
SH		 602static int qp_has_rq(struct ib_qp_init_attr *attr)
603{
604 if (attr->qp_type == IB_QPT_XRC_INI || attr->qp_type == IB_QPT_XRC_TGT)
605 return 0;
606
607 return !attr->srq;
608}
609
99ec41d0
JM		 610static int qp0_enabled_vf(struct mlx4_dev *dev, int qpn)
611{
612 int i;
613 for (i = 0; i < dev->caps.num_ports; i++) {
614 if (qpn == dev->caps.qp0_proxy[i])
615 return !!dev->caps.qp0_qkey[i];
616 }
617 return 0;
618}
619
7b59f0f9
EBE		 620static void mlx4_ib_free_qp_counter(struct mlx4_ib_dev *dev,
621 struct mlx4_ib_qp *qp)
622{
623 mutex_lock(&dev->counters_table[qp->port - 1].mutex);
624 mlx4_counter_free(dev->dev, qp->counter_index->index);
625 list_del(&qp->counter_index->list);
626 mutex_unlock(&dev->counters_table[qp->port - 1].mutex);
627
628 kfree(qp->counter_index);
629 qp->counter_index = NULL;
630}
631
225c7b1f
RD		 632static int create_qp_common(struct mlx4_ib_dev *dev, struct ib_pd *pd,
633 struct ib_qp_init_attr *init_attr,
40f2287b
JK		 634 struct ib_udata *udata, int sqpn, struct mlx4_ib_qp **caller_qp,
635 gfp_t gfp)
225c7b1f 636{
a3cdcbfa 637 int qpn;
225c7b1f 638 int err;
1ffeb2eb
JM		 639 struct mlx4_ib_sqp *sqp;
640 struct mlx4_ib_qp *qp;
641 enum mlx4_ib_qp_type qp_type = (enum mlx4_ib_qp_type) init_attr->qp_type;
35f05dab
YH		 642 struct mlx4_ib_cq *mcq;
643 unsigned long flags;
1ffeb2eb
JM		 644
645 /* When tunneling special qps, we use a plain UD qp */
646 if (sqpn) {
647 if (mlx4_is_mfunc(dev->dev) &&
648 (!mlx4_is_master(dev->dev) ||
649 !(init_attr->create_flags & MLX4_IB_SRIOV_SQP))) {
650 if (init_attr->qp_type == IB_QPT_GSI)
651 qp_type = MLX4_IB_QPT_PROXY_GSI;
99ec41d0
JM		 652 else {
653 if (mlx4_is_master(dev->dev) ||
654 qp0_enabled_vf(dev->dev, sqpn))
655 qp_type = MLX4_IB_QPT_PROXY_SMI_OWNER;
656 else
657 qp_type = MLX4_IB_QPT_PROXY_SMI;
658 }
1ffeb2eb
JM		 659 }
660 qpn = sqpn;
661 /* add extra sg entry for tunneling */
662 init_attr->cap.max_recv_sge++;
663 } else if (init_attr->create_flags & MLX4_IB_SRIOV_TUNNEL_QP) {
664 struct mlx4_ib_qp_tunnel_init_attr *tnl_init =
665 container_of(init_attr,
666 struct mlx4_ib_qp_tunnel_init_attr, init_attr);
667 if ((tnl_init->proxy_qp_type != IB_QPT_SMI &&
668 tnl_init->proxy_qp_type != IB_QPT_GSI) ||
669 !mlx4_is_master(dev->dev))
670 return -EINVAL;
671 if (tnl_init->proxy_qp_type == IB_QPT_GSI)
672 qp_type = MLX4_IB_QPT_TUN_GSI;
99ec41d0
JM		 673 else if (tnl_init->slave == mlx4_master_func_num(dev->dev) ||
674 mlx4_vf_smi_enabled(dev->dev, tnl_init->slave,
675 tnl_init->port))
1ffeb2eb
JM		 676 qp_type = MLX4_IB_QPT_TUN_SMI_OWNER;
677 else
678 qp_type = MLX4_IB_QPT_TUN_SMI;
47605df9
JM		 679 /* we are definitely in the PPF here, since we are creating
680 * tunnel QPs. base_tunnel_sqpn is therefore valid. */
681 qpn = dev->dev->phys_caps.base_tunnel_sqpn + 8 * tnl_init->slave
682 + tnl_init->proxy_qp_type * 2 + tnl_init->port - 1;
1ffeb2eb
JM		 683 sqpn = qpn;
684 }
685
686 if (!*caller_qp) {
687 if (qp_type == MLX4_IB_QPT_SMI || qp_type == MLX4_IB_QPT_GSI ||
688 (qp_type & (MLX4_IB_QPT_PROXY_SMI | MLX4_IB_QPT_PROXY_SMI_OWNER |
689 MLX4_IB_QPT_PROXY_GSI | MLX4_IB_QPT_TUN_SMI_OWNER))) {
6fcd8d0d 690 sqp = kzalloc(sizeof (struct mlx4_ib_sqp), gfp);
1ffeb2eb
JM		 691 if (!sqp)
692 return -ENOMEM;
693 qp = &sqp->qp;
2f5bb473
JM		 694 qp->pri.vid = 0xFFFF;
695 qp->alt.vid = 0xFFFF;
1ffeb2eb 696 } else {
6fcd8d0d 697 qp = kzalloc(sizeof (struct mlx4_ib_qp), gfp);
1ffeb2eb
JM		 698 if (!qp)
699 return -ENOMEM;
2f5bb473
JM		 700 qp->pri.vid = 0xFFFF;
701 qp->alt.vid = 0xFFFF;
1ffeb2eb
JM		 702 }
703 } else
704 qp = *caller_qp;
705
706 qp->mlx4_ib_qp_type = qp_type;
225c7b1f
RD		 707
708 mutex_init(&qp->mutex);
709 spin_lock_init(&qp->sq.lock);
710 spin_lock_init(&qp->rq.lock);
fa417f7b 711 INIT_LIST_HEAD(&qp->gid_list);
0ff1fb65 712 INIT_LIST_HEAD(&qp->steering_rules);
225c7b1f
RD		 713
714 qp->state = IB_QPS_RESET;
ea54b10c
JM		 715 if (init_attr->sq_sig_type == IB_SIGNAL_ALL_WR)
716 qp->sq_signal_bits = cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE);
225c7b1f 717
0a1405da 718 err = set_rq_size(dev, &init_attr->cap, !!pd->uobject, qp_has_rq(init_attr), qp);
225c7b1f
RD		 719 if (err)
720 goto err;
721
722 if (pd->uobject) {
723 struct mlx4_ib_create_qp ucmd;
724
725 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) {
726 err = -EFAULT;
727 goto err;
728 }
729
0e6e7416
RD		 730 qp->sq_no_prefetch = ucmd.sq_no_prefetch;
731
83904132 732 err = set_user_sq_size(dev, qp, &ucmd);
2446304d
EC		 733 if (err)
734 goto err;
735
225c7b1f 736 qp->umem = ib_umem_get(pd->uobject->context, ucmd.buf_addr,
cb9fbc5c 737 qp->buf_size, 0, 0);
225c7b1f
RD		 738 if (IS_ERR(qp->umem)) {
739 err = PTR_ERR(qp->umem);
740 goto err;
741 }
742
743 err = mlx4_mtt_init(dev->dev, ib_umem_page_count(qp->umem),
744 ilog2(qp->umem->page_size), &qp->mtt);
745 if (err)
746 goto err_buf;
747
748 err = mlx4_ib_umem_write_mtt(dev, &qp->mtt, qp->umem);
749 if (err)
750 goto err_mtt;
751
0a1405da 752 if (qp_has_rq(init_attr)) {
02d89b87
RD		 753 err = mlx4_ib_db_map_user(to_mucontext(pd->uobject->context),
754 ucmd.db_addr, &qp->db);
755 if (err)
756 goto err_mtt;
757 }
225c7b1f 758 } else {
0e6e7416
RD		 759 qp->sq_no_prefetch = 0;
760
b832be1e
EC		 761 if (init_attr->create_flags & IB_QP_CREATE_IPOIB_UD_LSO)
762 qp->flags |= MLX4_IB_QP_LSO;
763
c1c98501
MB		 764 if (init_attr->create_flags & IB_QP_CREATE_NETIF_QP) {
765 if (dev->steering_support ==
766 MLX4_STEERING_MODE_DEVICE_MANAGED)
767 qp->flags |= MLX4_IB_QP_NETIF;
768 else
769 goto err;
770 }
771
1ffeb2eb 772 err = set_kernel_sq_size(dev, &init_attr->cap, qp_type, qp);
2446304d
EC		 773 if (err)
774 goto err;
775
0a1405da 776 if (qp_has_rq(init_attr)) {
40f2287b 777 err = mlx4_db_alloc(dev->dev, &qp->db, 0, gfp);
02d89b87
RD		 778 if (err)
779 goto err;
225c7b1f 780
02d89b87
RD		 781 *qp->db.db = 0;
782 }
225c7b1f 783
40f2287b 784 if (mlx4_buf_alloc(dev->dev, qp->buf_size, PAGE_SIZE * 2, &qp->buf, gfp)) {
225c7b1f
RD		 785 err = -ENOMEM;
786 goto err_db;
787 }
788
789 err = mlx4_mtt_init(dev->dev, qp->buf.npages, qp->buf.page_shift,
790 &qp->mtt);
791 if (err)
792 goto err_buf;
793
40f2287b 794 err = mlx4_buf_write_mtt(dev->dev, &qp->mtt, &qp->buf, gfp);
225c7b1f
RD		 795 if (err)
796 goto err_mtt;
797
40f2287b
JK		 798 qp->sq.wrid = kmalloc(qp->sq.wqe_cnt * sizeof (u64), gfp);
799 qp->rq.wrid = kmalloc(qp->rq.wqe_cnt * sizeof (u64), gfp);
225c7b1f
RD		 800 if (!qp->sq.wrid || !qp->rq.wrid) {
801 err = -ENOMEM;
802 goto err_wrid;
803 }
225c7b1f
RD		 804 }
805
a3cdcbfa 806 if (sqpn) {
1ffeb2eb
JM		 807 if (qp->mlx4_ib_qp_type & (MLX4_IB_QPT_PROXY_SMI_OWNER |
808 MLX4_IB_QPT_PROXY_SMI | MLX4_IB_QPT_PROXY_GSI)) {
809 if (alloc_proxy_bufs(pd->device, qp)) {
810 err = -ENOMEM;
811 goto err_wrid;
812 }
813 }
a3cdcbfa 814 } else {
ddae0349
EE		 815 /* Raw packet QPNs may not have bits 6,7 set in their qp_num;
816 * otherwise, the WQE BlueFlame setup flow wrongly causes
817 * VLAN insertion. */
3987a2d3 818 if (init_attr->qp_type == IB_QPT_RAW_PACKET)
ddae0349 819 err = mlx4_qp_reserve_range(dev->dev, 1, 1, &qpn,
d57febe1
MB		 820 (init_attr->cap.max_send_wr ?
821 MLX4_RESERVE_ETH_BF_QP : 0) |
822 (init_attr->cap.max_recv_wr ?
823 MLX4_RESERVE_A0_QP : 0));
3987a2d3 824 else
c1c98501
MB		 825 if (qp->flags & MLX4_IB_QP_NETIF)
826 err = mlx4_ib_steer_qp_alloc(dev, 1, &qpn);
827 else
828 err = mlx4_qp_reserve_range(dev->dev, 1, 1,
ddae0349 829 &qpn, 0);
a3cdcbfa 830 if (err)
1ffeb2eb 831 goto err_proxy;
a3cdcbfa
YP		 832 }
833
fbfb6625
EBE		 834 if (init_attr->create_flags & IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK)
835 qp->flags |= MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK;
836
40f2287b 837 err = mlx4_qp_alloc(dev->dev, qpn, &qp->mqp, gfp);
225c7b1f 838 if (err)
a3cdcbfa 839 goto err_qpn;
225c7b1f 840
0a1405da
SH		 841 if (init_attr->qp_type == IB_QPT_XRC_TGT)
842 qp->mqp.qpn |= (1 << 23);
843
225c7b1f
RD		 844 /*
845 * Hardware wants QPN written in big-endian order (after
846 * shifting) for send doorbell. Precompute this value to save
847 * a little bit when posting sends.
848 */
849 qp->doorbell_qpn = swab32(qp->mqp.qpn << 8);
850
225c7b1f 851 qp->mqp.event = mlx4_ib_qp_event;
1ffeb2eb
JM		 852 if (!*caller_qp)
853 *caller_qp = qp;
35f05dab
YH		 854
855 spin_lock_irqsave(&dev->reset_flow_resource_lock, flags);
856 mlx4_ib_lock_cqs(to_mcq(init_attr->send_cq),
857 to_mcq(init_attr->recv_cq));
858 /* Maintain device to QPs access, needed for further handling
859 * via reset flow
860 */
861 list_add_tail(&qp->qps_list, &dev->qp_list);
862 /* Maintain CQ to QPs access, needed for further handling
863 * via reset flow
864 */
865 mcq = to_mcq(init_attr->send_cq);
866 list_add_tail(&qp->cq_send_list, &mcq->send_qp_list);
867 mcq = to_mcq(init_attr->recv_cq);
868 list_add_tail(&qp->cq_recv_list, &mcq->recv_qp_list);
869 mlx4_ib_unlock_cqs(to_mcq(init_attr->send_cq),
870 to_mcq(init_attr->recv_cq));
871 spin_unlock_irqrestore(&dev->reset_flow_resource_lock, flags);
225c7b1f
RD		 872 return 0;
873
a3cdcbfa 874err_qpn:
c1c98501
MB		 875 if (!sqpn) {
876 if (qp->flags & MLX4_IB_QP_NETIF)
877 mlx4_ib_steer_qp_free(dev, qpn, 1);
878 else
879 mlx4_qp_release_range(dev->dev, qpn, 1);
880 }
1ffeb2eb
JM		 881err_proxy:
882 if (qp->mlx4_ib_qp_type == MLX4_IB_QPT_PROXY_GSI)
883 free_proxy_bufs(pd->device, qp);
225c7b1f 884err_wrid:
23f1b384 885 if (pd->uobject) {
0a1405da
SH		 886 if (qp_has_rq(init_attr))
887 mlx4_ib_db_unmap_user(to_mucontext(pd->uobject->context), &qp->db);
23f1b384 888 } else {
225c7b1f
RD		 889 kfree(qp->sq.wrid);
890 kfree(qp->rq.wrid);
891 }
892
893err_mtt:
894 mlx4_mtt_cleanup(dev->dev, &qp->mtt);
895
896err_buf:
897 if (pd->uobject)
898 ib_umem_release(qp->umem);
899 else
900 mlx4_buf_free(dev->dev, qp->buf_size, &qp->buf);
901
902err_db:
0a1405da 903 if (!pd->uobject && qp_has_rq(init_attr))
6296883c 904 mlx4_db_free(dev->dev, &qp->db);
225c7b1f
RD		 905
906err:
1ffeb2eb
JM		 907 if (!*caller_qp)
908 kfree(qp);
225c7b1f
RD		 909 return err;
910}
911
912static enum mlx4_qp_state to_mlx4_state(enum ib_qp_state state)
913{
914 switch (state) {
915 case IB_QPS_RESET: return MLX4_QP_STATE_RST;
916 case IB_QPS_INIT: return MLX4_QP_STATE_INIT;
917 case IB_QPS_RTR: return MLX4_QP_STATE_RTR;
918 case IB_QPS_RTS: return MLX4_QP_STATE_RTS;
919 case IB_QPS_SQD: return MLX4_QP_STATE_SQD;
920 case IB_QPS_SQE: return MLX4_QP_STATE_SQER;
921 case IB_QPS_ERR: return MLX4_QP_STATE_ERR;
922 default: return -1;
923 }
924}
925
926static void mlx4_ib_lock_cqs(struct mlx4_ib_cq *send_cq, struct mlx4_ib_cq *recv_cq)
338a8fad 927 __acquires(&send_cq->lock) __acquires(&recv_cq->lock)
225c7b1f 928{
338a8fad 929 if (send_cq == recv_cq) {
35f05dab 930 spin_lock(&send_cq->lock);
338a8fad
RD		 931 __acquire(&recv_cq->lock);
932 } else if (send_cq->mcq.cqn < recv_cq->mcq.cqn) {
35f05dab 933 spin_lock(&send_cq->lock);
225c7b1f
RD		 934 spin_lock_nested(&recv_cq->lock, SINGLE_DEPTH_NESTING);
935 } else {
35f05dab 936 spin_lock(&recv_cq->lock);
225c7b1f
RD		 937 spin_lock_nested(&send_cq->lock, SINGLE_DEPTH_NESTING);
938 }
939}
940
941static void mlx4_ib_unlock_cqs(struct mlx4_ib_cq *send_cq, struct mlx4_ib_cq *recv_cq)
338a8fad 942 __releases(&send_cq->lock) __releases(&recv_cq->lock)
225c7b1f 943{
338a8fad
RD		 944 if (send_cq == recv_cq) {
945 __release(&recv_cq->lock);
35f05dab 946 spin_unlock(&send_cq->lock);
338a8fad 947 } else if (send_cq->mcq.cqn < recv_cq->mcq.cqn) {
225c7b1f 948 spin_unlock(&recv_cq->lock);
35f05dab 949 spin_unlock(&send_cq->lock);
225c7b1f
RD		 950 } else {
951 spin_unlock(&send_cq->lock);
35f05dab 952 spin_unlock(&recv_cq->lock);
225c7b1f
RD		 953 }
954}
955
fa417f7b
EC		 956static void del_gid_entries(struct mlx4_ib_qp *qp)
957{
958 struct mlx4_ib_gid_entry *ge, *tmp;
959
960 list_for_each_entry_safe(ge, tmp, &qp->gid_list, list) {
961 list_del(&ge->list);
962 kfree(ge);
963 }
964}
965
0a1405da
SH		 966static struct mlx4_ib_pd *get_pd(struct mlx4_ib_qp *qp)
967{
968 if (qp->ibqp.qp_type == IB_QPT_XRC_TGT)
969 return to_mpd(to_mxrcd(qp->ibqp.xrcd)->pd);
970 else
971 return to_mpd(qp->ibqp.pd);
972}
973
974static void get_cqs(struct mlx4_ib_qp *qp,
975 struct mlx4_ib_cq **send_cq, struct mlx4_ib_cq **recv_cq)
976{
977 switch (qp->ibqp.qp_type) {
978 case IB_QPT_XRC_TGT:
979 *send_cq = to_mcq(to_mxrcd(qp->ibqp.xrcd)->cq);
980 *recv_cq = *send_cq;
981 break;
982 case IB_QPT_XRC_INI:
983 *send_cq = to_mcq(qp->ibqp.send_cq);
984 *recv_cq = *send_cq;
985 break;
986 default:
987 *send_cq = to_mcq(qp->ibqp.send_cq);
988 *recv_cq = to_mcq(qp->ibqp.recv_cq);
989 break;
990 }
991}
992
225c7b1f
RD		 993static void destroy_qp_common(struct mlx4_ib_dev *dev, struct mlx4_ib_qp *qp,
994 int is_user)
995{
996 struct mlx4_ib_cq *send_cq, *recv_cq;
35f05dab 997 unsigned long flags;
225c7b1f 998
2f5bb473 999 if (qp->state != IB_QPS_RESET) {
225c7b1f
RD		 1000 if (mlx4_qp_modify(dev->dev, NULL, to_mlx4_state(qp->state),
1001 MLX4_QP_STATE_RST, NULL, 0, 0, &qp->mqp))
987c8f8f 1002 pr_warn("modify QP %06x to RESET failed.\n",
225c7b1f 1003 qp->mqp.qpn);
25476b02 1004 if (qp->pri.smac || (!qp->pri.smac && qp->pri.smac_port)) {
2f5bb473
JM		 1005 mlx4_unregister_mac(dev->dev, qp->pri.smac_port, qp->pri.smac);
1006 qp->pri.smac = 0;
25476b02 1007 qp->pri.smac_port = 0;
2f5bb473
JM		 1008 }
1009 if (qp->alt.smac) {
1010 mlx4_unregister_mac(dev->dev, qp->alt.smac_port, qp->alt.smac);
1011 qp->alt.smac = 0;
1012 }
1013 if (qp->pri.vid < 0x1000) {
1014 mlx4_unregister_vlan(dev->dev, qp->pri.vlan_port, qp->pri.vid);
1015 qp->pri.vid = 0xFFFF;
1016 qp->pri.candidate_vid = 0xFFFF;
1017 qp->pri.update_vid = 0;
1018 }
1019 if (qp->alt.vid < 0x1000) {
1020 mlx4_unregister_vlan(dev->dev, qp->alt.vlan_port, qp->alt.vid);
1021 qp->alt.vid = 0xFFFF;
1022 qp->alt.candidate_vid = 0xFFFF;
1023 qp->alt.update_vid = 0;
1024 }
1025 }
225c7b1f 1026
0a1405da 1027 get_cqs(qp, &send_cq, &recv_cq);
225c7b1f 1028
35f05dab 1029 spin_lock_irqsave(&dev->reset_flow_resource_lock, flags);
225c7b1f
RD		 1030 mlx4_ib_lock_cqs(send_cq, recv_cq);
1031
35f05dab
YH		 1032 /* del from lists under both locks above to protect reset flow paths */
1033 list_del(&qp->qps_list);
1034 list_del(&qp->cq_send_list);
1035 list_del(&qp->cq_recv_list);
225c7b1f
RD		 1036 if (!is_user) {
1037 __mlx4_ib_cq_clean(recv_cq, qp->mqp.qpn,
1038 qp->ibqp.srq ? to_msrq(qp->ibqp.srq): NULL);
1039 if (send_cq != recv_cq)
1040 __mlx4_ib_cq_clean(send_cq, qp->mqp.qpn, NULL);
1041 }
1042
1043 mlx4_qp_remove(dev->dev, &qp->mqp);
1044
1045 mlx4_ib_unlock_cqs(send_cq, recv_cq);
35f05dab 1046 spin_unlock_irqrestore(&dev->reset_flow_resource_lock, flags);
225c7b1f
RD		 1047
1048 mlx4_qp_free(dev->dev, &qp->mqp);
a3cdcbfa 1049
c1c98501
MB		 1050 if (!is_sqp(dev, qp) && !is_tunnel_qp(dev, qp)) {
1051 if (qp->flags & MLX4_IB_QP_NETIF)
1052 mlx4_ib_steer_qp_free(dev, qp->mqp.qpn, 1);
1053 else
1054 mlx4_qp_release_range(dev->dev, qp->mqp.qpn, 1);
1055 }
a3cdcbfa 1056
225c7b1f
RD		 1057 mlx4_mtt_cleanup(dev->dev, &qp->mtt);
1058
1059 if (is_user) {
0a1405da 1060 if (qp->rq.wqe_cnt)
02d89b87
RD		 1061 mlx4_ib_db_unmap_user(to_mucontext(qp->ibqp.uobject->context),
1062 &qp->db);
225c7b1f
RD		 1063 ib_umem_release(qp->umem);
1064 } else {
1065 kfree(qp->sq.wrid);
1066 kfree(qp->rq.wrid);
1ffeb2eb
JM		 1067 if (qp->mlx4_ib_qp_type & (MLX4_IB_QPT_PROXY_SMI_OWNER |
1068 MLX4_IB_QPT_PROXY_SMI | MLX4_IB_QPT_PROXY_GSI))
1069 free_proxy_bufs(&dev->ib_dev, qp);
225c7b1f 1070 mlx4_buf_free(dev->dev, qp->buf_size, &qp->buf);
0a1405da 1071 if (qp->rq.wqe_cnt)
6296883c 1072 mlx4_db_free(dev->dev, &qp->db);
225c7b1f 1073 }
fa417f7b
EC		 1074
1075 del_gid_entries(qp);
225c7b1f
RD		 1076}
1077
47605df9
JM		 1078static u32 get_sqp_num(struct mlx4_ib_dev *dev, struct ib_qp_init_attr *attr)
1079{
1080 /* Native or PPF */
1081 if (!mlx4_is_mfunc(dev->dev) ||
1082 (mlx4_is_master(dev->dev) &&
1083 attr->create_flags & MLX4_IB_SRIOV_SQP)) {
1084 return dev->dev->phys_caps.base_sqpn +
1085 (attr->qp_type == IB_QPT_SMI ? 0 : 2) +
1086 attr->port_num - 1;
1087 }
1088 /* PF or VF -- creating proxies */
1089 if (attr->qp_type == IB_QPT_SMI)
1090 return dev->dev->caps.qp0_proxy[attr->port_num - 1];
1091 else
1092 return dev->dev->caps.qp1_proxy[attr->port_num - 1];
1093}
1094
225c7b1f
RD		 1095struct ib_qp *mlx4_ib_create_qp(struct ib_pd *pd,
1096 struct ib_qp_init_attr *init_attr,
1097 struct ib_udata *udata)
1098{
1ffeb2eb 1099 struct mlx4_ib_qp *qp = NULL;
225c7b1f 1100 int err;
fbfb6625 1101 int sup_u_create_flags = MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK;
0a1405da 1102 u16 xrcdn = 0;
40f2287b 1103 gfp_t gfp;
225c7b1f 1104
40f2287b
JK		 1105 gfp = (init_attr->create_flags & MLX4_IB_QP_CREATE_USE_GFP_NOIO) ?
1106 GFP_NOIO : GFP_KERNEL;
521e575b 1107 /*
1ffeb2eb
JM		 1108 * We only support LSO, vendor flag1, and multicast loopback blocking,
1109 * and only for kernel UD QPs.
521e575b 1110 */
1ffeb2eb
JM		 1111 if (init_attr->create_flags & ~(MLX4_IB_QP_LSO |
1112 MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK |
c1c98501
MB		 1113 MLX4_IB_SRIOV_TUNNEL_QP |
1114 MLX4_IB_SRIOV_SQP |
40f2287b
JK		 1115 MLX4_IB_QP_NETIF |
1116 MLX4_IB_QP_CREATE_USE_GFP_NOIO))
b832be1e 1117 return ERR_PTR(-EINVAL);
521e575b 1118
c1c98501
MB		 1119 if (init_attr->create_flags & IB_QP_CREATE_NETIF_QP) {
1120 if (init_attr->qp_type != IB_QPT_UD)
1121 return ERR_PTR(-EINVAL);
1122 }
1123
521e575b 1124 if (init_attr->create_flags &&
fbfb6625
EBE		 1125 ((udata && init_attr->create_flags & ~(sup_u_create_flags)) ||
1126 ((init_attr->create_flags & ~(MLX4_IB_SRIOV_SQP |
1127 MLX4_IB_QP_CREATE_USE_GFP_NOIO |
1128 MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK)) &&
1ffeb2eb
JM		 1129 init_attr->qp_type != IB_QPT_UD) ||
1130 ((init_attr->create_flags & MLX4_IB_SRIOV_SQP) &&
1131 init_attr->qp_type > IB_QPT_GSI)))
b846f25a
EC		 1132 return ERR_PTR(-EINVAL);
1133
225c7b1f 1134 switch (init_attr->qp_type) {
0a1405da
SH		 1135 case IB_QPT_XRC_TGT:
1136 pd = to_mxrcd(init_attr->xrcd)->pd;
1137 xrcdn = to_mxrcd(init_attr->xrcd)->xrcdn;
1138 init_attr->send_cq = to_mxrcd(init_attr->xrcd)->cq;
1139 /* fall through */
1140 case IB_QPT_XRC_INI:
1141 if (!(to_mdev(pd->device)->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC))
1142 return ERR_PTR(-ENOSYS);
1143 init_attr->recv_cq = init_attr->send_cq;
1144 /* fall through */
225c7b1f
RD		 1145 case IB_QPT_RC:
1146 case IB_QPT_UC:
3987a2d3 1147 case IB_QPT_RAW_PACKET:
40f2287b 1148 qp = kzalloc(sizeof *qp, gfp);
225c7b1f
RD		 1149 if (!qp)
1150 return ERR_PTR(-ENOMEM);
2f5bb473
JM		 1151 qp->pri.vid = 0xFFFF;
1152 qp->alt.vid = 0xFFFF;
1ffeb2eb
JM		 1153 /* fall through */
1154 case IB_QPT_UD:
1155 {
1156 err = create_qp_common(to_mdev(pd->device), pd, init_attr,
40f2287b 1157 udata, 0, &qp, gfp);
1ffeb2eb 1158 if (err)
225c7b1f 1159 return ERR_PTR(err);
225c7b1f
RD		 1160
1161 qp->ibqp.qp_num = qp->mqp.qpn;
0a1405da 1162 qp->xrcdn = xrcdn;
225c7b1f
RD		 1163
1164 break;
1165 }
1166 case IB_QPT_SMI:
1167 case IB_QPT_GSI:
1168 {
1169 /* Userspace is not allowed to create special QPs: */
0a1405da 1170 if (udata)
225c7b1f
RD		 1171 return ERR_PTR(-EINVAL);
1172
0a1405da 1173 err = create_qp_common(to_mdev(pd->device), pd, init_attr, udata,
47605df9 1174 get_sqp_num(to_mdev(pd->device), init_attr),
40f2287b 1175 &qp, gfp);
1ffeb2eb 1176 if (err)
225c7b1f 1177 return ERR_PTR(err);
225c7b1f
RD		 1178
1179 qp->port = init_attr->port_num;
1180 qp->ibqp.qp_num = init_attr->qp_type == IB_QPT_SMI ? 0 : 1;
1181
1182 break;
1183 }
1184 default:
1185 /* Don't support raw QPs */
1186 return ERR_PTR(-EINVAL);
1187 }
1188
1189 return &qp->ibqp;
1190}
1191
1192int mlx4_ib_destroy_qp(struct ib_qp *qp)
1193{
1194 struct mlx4_ib_dev *dev = to_mdev(qp->device);
1195 struct mlx4_ib_qp *mqp = to_mqp(qp);
0a1405da 1196 struct mlx4_ib_pd *pd;
225c7b1f
RD		 1197
1198 if (is_qp0(dev, mqp))
1199 mlx4_CLOSE_PORT(dev->dev, mqp->port);
1200
9433c188
MB		 1201 if (dev->qp1_proxy[mqp->port - 1] == mqp) {
1202 mutex_lock(&dev->qp1_proxy_lock[mqp->port - 1]);
1203 dev->qp1_proxy[mqp->port - 1] = NULL;
1204 mutex_unlock(&dev->qp1_proxy_lock[mqp->port - 1]);
1205 }
1206
7b59f0f9
EBE		 1207 if (mqp->counter_index)
1208 mlx4_ib_free_qp_counter(dev, mqp);
1209
0a1405da
SH		 1210 pd = get_pd(mqp);
1211 destroy_qp_common(dev, mqp, !!pd->ibpd.uobject);
225c7b1f
RD		 1212
1213 if (is_sqp(dev, mqp))
1214 kfree(to_msqp(mqp));
1215 else
1216 kfree(mqp);
1217
1218 return 0;
1219}
1220
1ffeb2eb 1221static int to_mlx4_st(struct mlx4_ib_dev *dev, enum mlx4_ib_qp_type type)
225c7b1f
RD		 1222{
1223 switch (type) {
1ffeb2eb
JM		 1224 case MLX4_IB_QPT_RC: return MLX4_QP_ST_RC;
1225 case MLX4_IB_QPT_UC: return MLX4_QP_ST_UC;
1226 case MLX4_IB_QPT_UD: return MLX4_QP_ST_UD;
1227 case MLX4_IB_QPT_XRC_INI:
1228 case MLX4_IB_QPT_XRC_TGT: return MLX4_QP_ST_XRC;
1229 case MLX4_IB_QPT_SMI:
1230 case MLX4_IB_QPT_GSI:
1231 case MLX4_IB_QPT_RAW_PACKET: return MLX4_QP_ST_MLX;
1232
1233 case MLX4_IB_QPT_PROXY_SMI_OWNER:
1234 case MLX4_IB_QPT_TUN_SMI_OWNER: return (mlx4_is_mfunc(dev->dev) ?
1235 MLX4_QP_ST_MLX : -1);
1236 case MLX4_IB_QPT_PROXY_SMI:
1237 case MLX4_IB_QPT_TUN_SMI:
1238 case MLX4_IB_QPT_PROXY_GSI:
1239 case MLX4_IB_QPT_TUN_GSI: return (mlx4_is_mfunc(dev->dev) ?
1240 MLX4_QP_ST_UD : -1);
1241 default: return -1;
225c7b1f
RD		 1242 }
1243}
1244
65adfa91 1245static __be32 to_mlx4_access_flags(struct mlx4_ib_qp *qp, const struct ib_qp_attr *attr,
225c7b1f
RD		 1246 int attr_mask)
1247{
1248 u8 dest_rd_atomic;
1249 u32 access_flags;
1250 u32 hw_access_flags = 0;
1251
1252 if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC)
1253 dest_rd_atomic = attr->max_dest_rd_atomic;
1254 else
1255 dest_rd_atomic = qp->resp_depth;
1256
1257 if (attr_mask & IB_QP_ACCESS_FLAGS)
1258 access_flags = attr->qp_access_flags;
1259 else
1260 access_flags = qp->atomic_rd_en;
1261
1262 if (!dest_rd_atomic)
1263 access_flags &= IB_ACCESS_REMOTE_WRITE;
1264
1265 if (access_flags & IB_ACCESS_REMOTE_READ)
1266 hw_access_flags |= MLX4_QP_BIT_RRE;
1267 if (access_flags & IB_ACCESS_REMOTE_ATOMIC)
1268 hw_access_flags |= MLX4_QP_BIT_RAE;
1269 if (access_flags & IB_ACCESS_REMOTE_WRITE)
1270 hw_access_flags |= MLX4_QP_BIT_RWE;
1271
1272 return cpu_to_be32(hw_access_flags);
1273}
1274
65adfa91 1275static void store_sqp_attrs(struct mlx4_ib_sqp *sqp, const struct ib_qp_attr *attr,
225c7b1f
RD		 1276 int attr_mask)
1277{
1278 if (attr_mask & IB_QP_PKEY_INDEX)
1279 sqp->pkey_index = attr->pkey_index;
1280 if (attr_mask & IB_QP_QKEY)
1281 sqp->qkey = attr->qkey;
1282 if (attr_mask & IB_QP_SQ_PSN)
1283 sqp->send_psn = attr->sq_psn;
1284}
1285
1286static void mlx4_set_sched(struct mlx4_qp_path *path, u8 port)
1287{
1288 path->sched_queue = (path->sched_queue & 0xbf) | ((port - 1) << 6);
1289}
1290
297e0dad
MS		 1291static int _mlx4_set_path(struct mlx4_ib_dev *dev, const struct ib_ah_attr *ah,
1292 u64 smac, u16 vlan_tag, struct mlx4_qp_path *path,
2f5bb473 1293 struct mlx4_roce_smac_vlan_info *smac_info, u8 port)
225c7b1f 1294{
fa417f7b
EC		 1295 int is_eth = rdma_port_get_link_layer(&dev->ib_dev, port) ==
1296 IB_LINK_LAYER_ETHERNET;
4c3eb3ca 1297 int vidx;
297e0dad 1298 int smac_index;
2f5bb473 1299 int err;
297e0dad 1300
fa417f7b 1301
225c7b1f
RD		 1302 path->grh_mylmc = ah->src_path_bits & 0x7f;
1303 path->rlid = cpu_to_be16(ah->dlid);
1304 if (ah->static_rate) {
1305 path->static_rate = ah->static_rate + MLX4_STAT_RATE_OFFSET;
1306 while (path->static_rate > IB_RATE_2_5_GBPS + MLX4_STAT_RATE_OFFSET &&
1307 !(1 << path->static_rate & dev->dev->caps.stat_rate_support))
1308 --path->static_rate;
1309 } else
1310 path->static_rate = 0;
225c7b1f
RD		 1311
1312 if (ah->ah_flags & IB_AH_GRH) {
5070cd22
MS		 1313 int real_sgid_index = mlx4_ib_gid_index_to_real_index(dev,
1314 port,
1315 ah->grh.sgid_index);
1316
1317 if (real_sgid_index >= dev->dev->caps.gid_table_len[port]) {
987c8f8f 1318 pr_err("sgid_index (%u) too large. max is %d\n",
5070cd22 1319 real_sgid_index, dev->dev->caps.gid_table_len[port] - 1);
225c7b1f
RD		 1320 return -1;
1321 }
1322
1323 path->grh_mylmc |= 1 << 7;
5070cd22 1324 path->mgid_index = real_sgid_index;
225c7b1f
RD		 1325 path->hop_limit = ah->grh.hop_limit;
1326 path->tclass_flowlabel =
1327 cpu_to_be32((ah->grh.traffic_class << 20) |
1328 (ah->grh.flow_label));
1329 memcpy(path->rgid, ah->grh.dgid.raw, 16);
1330 }
1331
fa417f7b
EC		 1332 if (is_eth) {
1333 if (!(ah->ah_flags & IB_AH_GRH))
1334 return -1;
1335
2f5bb473
JM		 1336 path->sched_queue = MLX4_IB_DEFAULT_SCHED_QUEUE |
1337 ((port - 1) << 6) | ((ah->sl & 7) << 3);
4c3eb3ca 1338
297e0dad 1339 path->feup |= MLX4_FEUP_FORCE_ETH_UP;
4c3eb3ca 1340 if (vlan_tag < 0x1000) {
2f5bb473
JM		 1341 if (smac_info->vid < 0x1000) {
1342 /* both valid vlan ids */
1343 if (smac_info->vid != vlan_tag) {
1344 /* different VIDs. unreg old and reg new */
1345 err = mlx4_register_vlan(dev->dev, port, vlan_tag, &vidx);
1346 if (err)
1347 return err;
1348 smac_info->candidate_vid = vlan_tag;
1349 smac_info->candidate_vlan_index = vidx;
1350 smac_info->candidate_vlan_port = port;
1351 smac_info->update_vid = 1;
1352 path->vlan_index = vidx;
1353 } else {
1354 path->vlan_index = smac_info->vlan_index;
1355 }
1356 } else {
1357 /* no current vlan tag in qp */
1358 err = mlx4_register_vlan(dev->dev, port, vlan_tag, &vidx);
1359 if (err)
1360 return err;
1361 smac_info->candidate_vid = vlan_tag;
1362 smac_info->candidate_vlan_index = vidx;
1363 smac_info->candidate_vlan_port = port;
1364 smac_info->update_vid = 1;
1365 path->vlan_index = vidx;
1366 }
297e0dad 1367 path->feup |= MLX4_FVL_FORCE_ETH_VLAN;
2f5bb473
JM		 1368 path->fl = 1 << 6;
1369 } else {
1370 /* have current vlan tag. unregister it at modify-qp success */
1371 if (smac_info->vid < 0x1000) {
1372 smac_info->candidate_vid = 0xFFFF;
1373 smac_info->update_vid = 1;
1374 }
4c3eb3ca 1375 }
2f5bb473
JM		 1376
1377 /* get smac_index for RoCE use.
1378 * If no smac was yet assigned, register one.
1379 * If one was already assigned, but the new mac differs,
1380 * unregister the old one and register the new one.
1381 */
25476b02
JM		 1382 if ((!smac_info->smac && !smac_info->smac_port) ||
1383 smac_info->smac != smac) {
2f5bb473
JM		 1384 /* register candidate now, unreg if needed, after success */
1385 smac_index = mlx4_register_mac(dev->dev, port, smac);
1386 if (smac_index >= 0) {
1387 smac_info->candidate_smac_index = smac_index;
1388 smac_info->candidate_smac = smac;
1389 smac_info->candidate_smac_port = port;
1390 } else {
1391 return -EINVAL;
1392 }
1393 } else {
1394 smac_index = smac_info->smac_index;
1395 }
1396
1397 memcpy(path->dmac, ah->dmac, 6);
1398 path->ackto = MLX4_IB_LINK_TYPE_ETH;
1399 /* put MAC table smac index for IBoE */
1400 path->grh_mylmc = (u8) (smac_index) | 0x80;
1401 } else {
4c3eb3ca
EC		 1402 path->sched_queue = MLX4_IB_DEFAULT_SCHED_QUEUE |
1403 ((port - 1) << 6) | ((ah->sl & 0xf) << 2);
2f5bb473 1404 }
fa417f7b 1405
225c7b1f
RD		 1406 return 0;
1407}
1408
297e0dad
MS		 1409static int mlx4_set_path(struct mlx4_ib_dev *dev, const struct ib_qp_attr *qp,
1410 enum ib_qp_attr_mask qp_attr_mask,
2f5bb473 1411 struct mlx4_ib_qp *mqp,
dbf727de
MB		 1412 struct mlx4_qp_path *path, u8 port,
1413 u16 vlan_id, u8 *smac)
297e0dad
MS		 1414{
1415 return _mlx4_set_path(dev, &qp->ah_attr,
dbf727de
MB		 1416 mlx4_mac_to_u64(smac),
1417 vlan_id,
2f5bb473 1418 path, &mqp->pri, port);
297e0dad
MS		 1419}
1420
1421static int mlx4_set_alt_path(struct mlx4_ib_dev *dev,
1422 const struct ib_qp_attr *qp,
1423 enum ib_qp_attr_mask qp_attr_mask,
2f5bb473 1424 struct mlx4_ib_qp *mqp,
297e0dad
MS		 1425 struct mlx4_qp_path *path, u8 port)
1426{
1427 return _mlx4_set_path(dev, &qp->alt_ah_attr,
dbf727de
MB		 1428 0,
1429 0xffff,
2f5bb473 1430 path, &mqp->alt, port);
297e0dad
MS		 1431}
1432
fa417f7b
EC		 1433static void update_mcg_macs(struct mlx4_ib_dev *dev, struct mlx4_ib_qp *qp)
1434{
1435 struct mlx4_ib_gid_entry *ge, *tmp;
1436
1437 list_for_each_entry_safe(ge, tmp, &qp->gid_list, list) {
1438 if (!ge->added && mlx4_ib_add_mc(dev, qp, &ge->gid)) {
1439 ge->added = 1;
1440 ge->port = qp->port;
1441 }
1442 }
1443}
1444
dbf727de
MB		 1445static int handle_eth_ud_smac_index(struct mlx4_ib_dev *dev,
1446 struct mlx4_ib_qp *qp,
2f5bb473
JM		 1447 struct mlx4_qp_context *context)
1448{
2f5bb473
JM		 1449 u64 u64_mac;
1450 int smac_index;
1451
3e0629cb 1452 u64_mac = atomic64_read(&dev->iboe.mac[qp->port - 1]);
2f5bb473
JM		 1453
1454 context->pri_path.sched_queue = MLX4_IB_DEFAULT_SCHED_QUEUE | ((qp->port - 1) << 6);
25476b02 1455 if (!qp->pri.smac && !qp->pri.smac_port) {
2f5bb473
JM		 1456 smac_index = mlx4_register_mac(dev->dev, qp->port, u64_mac);
1457 if (smac_index >= 0) {
1458 qp->pri.candidate_smac_index = smac_index;
1459 qp->pri.candidate_smac = u64_mac;
1460 qp->pri.candidate_smac_port = qp->port;
1461 context->pri_path.grh_mylmc = 0x80 | (u8) smac_index;
1462 } else {
1463 return -ENOENT;
1464 }
1465 }
1466 return 0;
1467}
1468
7b59f0f9
EBE		 1469static int create_qp_lb_counter(struct mlx4_ib_dev *dev, struct mlx4_ib_qp *qp)
1470{
1471 struct counter_index *new_counter_index;
1472 int err;
1473 u32 tmp_idx;
1474
1475 if (rdma_port_get_link_layer(&dev->ib_dev, qp->port) !=
1476 IB_LINK_LAYER_ETHERNET ||
1477 !(qp->flags & MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK) ||
1478 !(dev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_LB_SRC_CHK))
1479 return 0;
1480
1481 err = mlx4_counter_alloc(dev->dev, &tmp_idx);
1482 if (err)
1483 return err;
1484
1485 new_counter_index = kmalloc(sizeof(*new_counter_index), GFP_KERNEL);
1486 if (!new_counter_index) {
1487 mlx4_counter_free(dev->dev, tmp_idx);
1488 return -ENOMEM;
1489 }
1490
1491 new_counter_index->index = tmp_idx;
1492 new_counter_index->allocated = 1;
1493 qp->counter_index = new_counter_index;
1494
1495 mutex_lock(&dev->counters_table[qp->port - 1].mutex);
1496 list_add_tail(&new_counter_index->list,
1497 &dev->counters_table[qp->port - 1].counters_list);
1498 mutex_unlock(&dev->counters_table[qp->port - 1].mutex);
1499
1500 return 0;
1501}
1502
65adfa91
MT		 1503static int __mlx4_ib_modify_qp(struct ib_qp *ibqp,
1504 const struct ib_qp_attr *attr, int attr_mask,
1505 enum ib_qp_state cur_state, enum ib_qp_state new_state)
225c7b1f
RD		 1506{
1507 struct mlx4_ib_dev *dev = to_mdev(ibqp->device);
1508 struct mlx4_ib_qp *qp = to_mqp(ibqp);
0a1405da
SH		 1509 struct mlx4_ib_pd *pd;
1510 struct mlx4_ib_cq *send_cq, *recv_cq;
225c7b1f
RD		 1511 struct mlx4_qp_context *context;
1512 enum mlx4_qp_optpar optpar = 0;
225c7b1f 1513 int sqd_event;
c1c98501 1514 int steer_qp = 0;
225c7b1f 1515 int err = -EINVAL;
3ba8e31d 1516 int counter_index;
225c7b1f 1517
3dec4878
JM		 1518 /* APM is not supported under RoCE */
1519 if (attr_mask & IB_QP_ALT_PATH &&
1520 rdma_port_get_link_layer(&dev->ib_dev, qp->port) ==
1521 IB_LINK_LAYER_ETHERNET)
1522 return -ENOTSUPP;
1523
225c7b1f
RD		 1524 context = kzalloc(sizeof *context, GFP_KERNEL);
1525 if (!context)
1526 return -ENOMEM;
1527
225c7b1f 1528 context->flags = cpu_to_be32((to_mlx4_state(new_state) << 28) |
1ffeb2eb 1529 (to_mlx4_st(dev, qp->mlx4_ib_qp_type) << 16));
225c7b1f
RD		 1530
1531 if (!(attr_mask & IB_QP_PATH_MIG_STATE))
1532 context->flags |= cpu_to_be32(MLX4_QP_PM_MIGRATED << 11);
1533 else {
1534 optpar |= MLX4_QP_OPTPAR_PM_STATE;
1535 switch (attr->path_mig_state) {
1536 case IB_MIG_MIGRATED:
1537 context->flags |= cpu_to_be32(MLX4_QP_PM_MIGRATED << 11);
1538 break;
1539 case IB_MIG_REARM:
1540 context->flags |= cpu_to_be32(MLX4_QP_PM_REARM << 11);
1541 break;
1542 case IB_MIG_ARMED:
1543 context->flags |= cpu_to_be32(MLX4_QP_PM_ARMED << 11);
1544 break;
1545 }
1546 }
1547
b832be1e 1548 if (ibqp->qp_type == IB_QPT_GSI || ibqp->qp_type == IB_QPT_SMI)
225c7b1f 1549 context->mtu_msgmax = (IB_MTU_4096 << 5) | 11;
3987a2d3
OG		 1550 else if (ibqp->qp_type == IB_QPT_RAW_PACKET)
1551 context->mtu_msgmax = (MLX4_RAW_QP_MTU << 5) | MLX4_RAW_QP_MSGMAX;
b832be1e
EC		 1552 else if (ibqp->qp_type == IB_QPT_UD) {
1553 if (qp->flags & MLX4_IB_QP_LSO)
1554 context->mtu_msgmax = (IB_MTU_4096 << 5) |
1555 ilog2(dev->dev->caps.max_gso_sz);
1556 else
6e0d733d 1557 context->mtu_msgmax = (IB_MTU_4096 << 5) | 12;
b832be1e 1558 } else if (attr_mask & IB_QP_PATH_MTU) {
225c7b1f 1559 if (attr->path_mtu < IB_MTU_256 || attr->path_mtu > IB_MTU_4096) {
987c8f8f 1560 pr_err("path MTU (%u) is invalid\n",
225c7b1f 1561 attr->path_mtu);
f5b40431 1562 goto out;
225c7b1f 1563 }
d1f2cd89
EC		 1564 context->mtu_msgmax = (attr->path_mtu << 5) |
1565 ilog2(dev->dev->caps.max_msg_sz);
225c7b1f
RD		 1566 }
1567
0e6e7416
RD		 1568 if (qp->rq.wqe_cnt)
1569 context->rq_size_stride = ilog2(qp->rq.wqe_cnt) << 3;
225c7b1f
RD		 1570 context->rq_size_stride |= qp->rq.wqe_shift - 4;
1571
0e6e7416
RD		 1572 if (qp->sq.wqe_cnt)
1573 context->sq_size_stride = ilog2(qp->sq.wqe_cnt) << 3;
225c7b1f
RD		 1574 context->sq_size_stride |= qp->sq.wqe_shift - 4;
1575
7b59f0f9
EBE		 1576 if (new_state == IB_QPS_RESET && qp->counter_index)
1577 mlx4_ib_free_qp_counter(dev, qp);
1578
0a1405da 1579 if (cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT) {
0e6e7416 1580 context->sq_size_stride |= !!qp->sq_no_prefetch << 7;
0a1405da 1581 context->xrcd = cpu_to_be32((u32) qp->xrcdn);
02d7ef6f
DB		 1582 if (ibqp->qp_type == IB_QPT_RAW_PACKET)
1583 context->param3 |= cpu_to_be32(1 << 30);
0a1405da 1584 }
0e6e7416 1585
225c7b1f
RD		 1586 if (qp->ibqp.uobject)
1587 context->usr_page = cpu_to_be32(to_mucontext(ibqp->uobject->context)->uar.index);
1588 else
1589 context->usr_page = cpu_to_be32(dev->priv_uar.index);
1590
1591 if (attr_mask & IB_QP_DEST_QPN)
1592 context->remote_qpn = cpu_to_be32(attr->dest_qp_num);
1593
1594 if (attr_mask & IB_QP_PORT) {
1595 if (cur_state == IB_QPS_SQD && new_state == IB_QPS_SQD &&
1596 !(attr_mask & IB_QP_AV)) {
1597 mlx4_set_sched(&context->pri_path, attr->port_num);
1598 optpar |= MLX4_QP_OPTPAR_SCHED_QUEUE;
1599 }
1600 }
1601
cfcde11c 1602 if (cur_state == IB_QPS_INIT && new_state == IB_QPS_RTR) {
7b59f0f9
EBE		 1603 err = create_qp_lb_counter(dev, qp);
1604 if (err)
1605 goto out;
1606
3ba8e31d
EBE		 1607 counter_index =
1608 dev->counters_table[qp->port - 1].default_counter;
7b59f0f9
EBE		 1609 if (qp->counter_index)
1610 counter_index = qp->counter_index->index;
1611
3ba8e31d
EBE		 1612 if (counter_index != -1) {
1613 context->pri_path.counter_index = counter_index;
cfcde11c 1614 optpar |= MLX4_QP_OPTPAR_COUNTER_INDEX;
7b59f0f9
EBE		 1615 if (qp->counter_index) {
1616 context->pri_path.fl |=
1617 MLX4_FL_ETH_SRC_CHECK_MC_LB;
1618 context->pri_path.vlan_control |=
1619 MLX4_CTRL_ETH_SRC_CHECK_IF_COUNTER;
1620 }
cfcde11c 1621 } else
47d8417f
EBE		 1622 context->pri_path.counter_index =
1623 MLX4_SINK_COUNTER_INDEX(dev->dev);
c1c98501
MB		 1624
1625 if (qp->flags & MLX4_IB_QP_NETIF) {
1626 mlx4_ib_steer_qp_reg(dev, qp, 1);
1627 steer_qp = 1;
1628 }
cfcde11c
OG		 1629 }
1630
225c7b1f 1631 if (attr_mask & IB_QP_PKEY_INDEX) {
1ffeb2eb
JM		 1632 if (qp->mlx4_ib_qp_type & MLX4_IB_QPT_ANY_SRIOV)
1633 context->pri_path.disable_pkey_check = 0x40;
225c7b1f
RD		 1634 context->pri_path.pkey_index = attr->pkey_index;
1635 optpar |= MLX4_QP_OPTPAR_PKEY_INDEX;
1636 }
1637
225c7b1f 1638 if (attr_mask & IB_QP_AV) {
dbf727de
MB		 1639 u8 port_num = mlx4_is_bonded(to_mdev(ibqp->device)->dev) ? 1 :
1640 attr_mask & IB_QP_PORT ? attr->port_num : qp->port;
1641 union ib_gid gid;
1642 struct ib_gid_attr gid_attr;
1643 u16 vlan = 0xffff;
1644 u8 smac[ETH_ALEN];
1645 int status = 0;
1646
1647 if (rdma_cap_eth_ah(&dev->ib_dev, port_num) &&
1648 attr->ah_attr.ah_flags & IB_AH_GRH) {
1649 int index = attr->ah_attr.grh.sgid_index;
1650
1651 status = ib_get_cached_gid(ibqp->device, port_num,
1652 index, &gid, &gid_attr);
1653 if (!status && !memcmp(&gid, &zgid, sizeof(gid)))
1654 status = -ENOENT;
1655 if (!status && gid_attr.ndev) {
1656 vlan = rdma_vlan_dev_vlan_id(gid_attr.ndev);
1657 memcpy(smac, gid_attr.ndev->dev_addr, ETH_ALEN);
1658 dev_put(gid_attr.ndev);
1659 }
1660 }
1661 if (status)
1662 goto out;
1663
2f5bb473 1664 if (mlx4_set_path(dev, attr, attr_mask, qp, &context->pri_path,
dbf727de 1665 port_num, vlan, smac))
225c7b1f 1666 goto out;
225c7b1f
RD		 1667
1668 optpar |= (MLX4_QP_OPTPAR_PRIMARY_ADDR_PATH |
1669 MLX4_QP_OPTPAR_SCHED_QUEUE);
1670 }
1671
1672 if (attr_mask & IB_QP_TIMEOUT) {
fa417f7b 1673 context->pri_path.ackto |= attr->timeout << 3;
225c7b1f
RD		 1674 optpar |= MLX4_QP_OPTPAR_ACK_TIMEOUT;
1675 }
1676
1677 if (attr_mask & IB_QP_ALT_PATH) {
225c7b1f
RD		 1678 if (attr->alt_port_num == 0 ||
1679 attr->alt_port_num > dev->dev->caps.num_ports)
f5b40431 1680 goto out;
225c7b1f 1681
5ae2a7a8
RD		 1682 if (attr->alt_pkey_index >=
1683 dev->dev->caps.pkey_table_len[attr->alt_port_num])
f5b40431 1684 goto out;
5ae2a7a8 1685
2f5bb473
JM		 1686 if (mlx4_set_alt_path(dev, attr, attr_mask, qp,
1687 &context->alt_path,
297e0dad 1688 attr->alt_port_num))
f5b40431 1689 goto out;
225c7b1f
RD		 1690
1691 context->alt_path.pkey_index = attr->alt_pkey_index;
1692 context->alt_path.ackto = attr->alt_timeout << 3;
1693 optpar |= MLX4_QP_OPTPAR_ALT_ADDR_PATH;
1694 }
1695
0a1405da
SH		 1696 pd = get_pd(qp);
1697 get_cqs(qp, &send_cq, &recv_cq);
1698 context->pd = cpu_to_be32(pd->pdn);
1699 context->cqn_send = cpu_to_be32(send_cq->mcq.cqn);
1700 context->cqn_recv = cpu_to_be32(recv_cq->mcq.cqn);
1701 context->params1 = cpu_to_be32(MLX4_IB_ACK_REQ_FREQ << 28);
57f01b53 1702
95d04f07
RD		 1703 /* Set "fast registration enabled" for all kernel QPs */
1704 if (!qp->ibqp.uobject)
1705 context->params1 |= cpu_to_be32(1 << 11);
1706
57f01b53
JM		 1707 if (attr_mask & IB_QP_RNR_RETRY) {
1708 context->params1 |= cpu_to_be32(attr->rnr_retry << 13);
1709 optpar |= MLX4_QP_OPTPAR_RNR_RETRY;
1710 }
1711
225c7b1f
RD		 1712 if (attr_mask & IB_QP_RETRY_CNT) {
1713 context->params1 |= cpu_to_be32(attr->retry_cnt << 16);
1714 optpar |= MLX4_QP_OPTPAR_RETRY_COUNT;
1715 }
1716
1717 if (attr_mask & IB_QP_MAX_QP_RD_ATOMIC) {
1718 if (attr->max_rd_atomic)
1719 context->params1 |=
1720 cpu_to_be32(fls(attr->max_rd_atomic - 1) << 21);
1721 optpar |= MLX4_QP_OPTPAR_SRA_MAX;
1722 }
1723
1724 if (attr_mask & IB_QP_SQ_PSN)
1725 context->next_send_psn = cpu_to_be32(attr->sq_psn);
1726
225c7b1f
RD		 1727 if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC) {
1728 if (attr->max_dest_rd_atomic)
1729 context->params2 |=
1730 cpu_to_be32(fls(attr->max_dest_rd_atomic - 1) << 21);
1731 optpar |= MLX4_QP_OPTPAR_RRA_MAX;
1732 }
1733
1734 if (attr_mask & (IB_QP_ACCESS_FLAGS | IB_QP_MAX_DEST_RD_ATOMIC)) {
1735 context->params2 |= to_mlx4_access_flags(qp, attr, attr_mask);
1736 optpar |= MLX4_QP_OPTPAR_RWE | MLX4_QP_OPTPAR_RRE | MLX4_QP_OPTPAR_RAE;
1737 }
1738
1739 if (ibqp->srq)
1740 context->params2 |= cpu_to_be32(MLX4_QP_BIT_RIC);
1741
1742 if (attr_mask & IB_QP_MIN_RNR_TIMER) {
1743 context->rnr_nextrecvpsn |= cpu_to_be32(attr->min_rnr_timer << 24);
1744 optpar |= MLX4_QP_OPTPAR_RNR_TIMEOUT;
1745 }
1746 if (attr_mask & IB_QP_RQ_PSN)
1747 context->rnr_nextrecvpsn |= cpu_to_be32(attr->rq_psn);
1748
1ffeb2eb 1749 /* proxy and tunnel qp qkeys will be changed in modify-qp wrappers */
225c7b1f 1750 if (attr_mask & IB_QP_QKEY) {
1ffeb2eb
JM		 1751 if (qp->mlx4_ib_qp_type &
1752 (MLX4_IB_QPT_PROXY_SMI_OWNER | MLX4_IB_QPT_TUN_SMI_OWNER))
1753 context->qkey = cpu_to_be32(IB_QP_SET_QKEY);
1754 else {
1755 if (mlx4_is_mfunc(dev->dev) &&
1756 !(qp->mlx4_ib_qp_type & MLX4_IB_QPT_ANY_SRIOV) &&
1757 (attr->qkey & MLX4_RESERVED_QKEY_MASK) ==
1758 MLX4_RESERVED_QKEY_BASE) {
1759 pr_err("Cannot use reserved QKEY"
1760 " 0x%x (range 0xffff0000..0xffffffff"
1761 " is reserved)\n", attr->qkey);
1762 err = -EINVAL;
1763 goto out;
1764 }
1765 context->qkey = cpu_to_be32(attr->qkey);
1766 }
225c7b1f
RD		 1767 optpar |= MLX4_QP_OPTPAR_Q_KEY;
1768 }
1769
1770 if (ibqp->srq)
1771 context->srqn = cpu_to_be32(1 << 24 | to_msrq(ibqp->srq)->msrq.srqn);
1772
0a1405da 1773 if (qp->rq.wqe_cnt && cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT)
225c7b1f
RD		 1774 context->db_rec_addr = cpu_to_be64(qp->db.dma);
1775
1776 if (cur_state == IB_QPS_INIT &&
1777 new_state == IB_QPS_RTR &&
1778 (ibqp->qp_type == IB_QPT_GSI || ibqp->qp_type == IB_QPT_SMI ||
3987a2d3
OG		 1779 ibqp->qp_type == IB_QPT_UD ||
1780 ibqp->qp_type == IB_QPT_RAW_PACKET)) {
225c7b1f 1781 context->pri_path.sched_queue = (qp->port - 1) << 6;
1ffeb2eb
JM		 1782 if (qp->mlx4_ib_qp_type == MLX4_IB_QPT_SMI ||
1783 qp->mlx4_ib_qp_type &
1784 (MLX4_IB_QPT_PROXY_SMI_OWNER | MLX4_IB_QPT_TUN_SMI_OWNER)) {
225c7b1f 1785 context->pri_path.sched_queue |= MLX4_IB_DEFAULT_QP0_SCHED_QUEUE;
1ffeb2eb
JM		 1786 if (qp->mlx4_ib_qp_type != MLX4_IB_QPT_SMI)
1787 context->pri_path.fl = 0x80;
1788 } else {
1789 if (qp->mlx4_ib_qp_type & MLX4_IB_QPT_ANY_SRIOV)
1790 context->pri_path.fl = 0x80;
225c7b1f 1791 context->pri_path.sched_queue |= MLX4_IB_DEFAULT_SCHED_QUEUE;
1ffeb2eb 1792 }
2f5bb473
JM		 1793 if (rdma_port_get_link_layer(&dev->ib_dev, qp->port) ==
1794 IB_LINK_LAYER_ETHERNET) {
1795 if (qp->mlx4_ib_qp_type == MLX4_IB_QPT_TUN_GSI ||
1796 qp->mlx4_ib_qp_type == MLX4_IB_QPT_GSI)
1797 context->pri_path.feup = 1 << 7; /* don't fsm */
1798 /* handle smac_index */
1799 if (qp->mlx4_ib_qp_type == MLX4_IB_QPT_UD ||
1800 qp->mlx4_ib_qp_type == MLX4_IB_QPT_PROXY_GSI ||
1801 qp->mlx4_ib_qp_type == MLX4_IB_QPT_TUN_GSI) {
dbf727de 1802 err = handle_eth_ud_smac_index(dev, qp, context);
bede98e7
MD		 1803 if (err) {
1804 err = -EINVAL;
1805 goto out;
1806 }
9433c188
MB		 1807 if (qp->mlx4_ib_qp_type == MLX4_IB_QPT_PROXY_GSI)
1808 dev->qp1_proxy[qp->port - 1] = qp;
2f5bb473
JM		 1809 }
1810 }
225c7b1f
RD		 1811 }
1812
d2fce8a9 1813 if (qp->ibqp.qp_type == IB_QPT_RAW_PACKET) {
3528f696
EC		 1814 context->pri_path.ackto = (context->pri_path.ackto & 0xf8) |
1815 MLX4_IB_LINK_TYPE_ETH;
d2fce8a9
OG		 1816 if (dev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
1817 /* set QP to receive both tunneled & non-tunneled packets */
8e1a03b6 1818 if (!(context->flags & cpu_to_be32(1 << MLX4_RSS_QPC_FLAG_OFFSET)))
d2fce8a9
OG		 1819 context->srqn = cpu_to_be32(7 << 28);
1820 }
1821 }
3528f696 1822
297e0dad
MS		 1823 if (ibqp->qp_type == IB_QPT_UD && (new_state == IB_QPS_RTR)) {
1824 int is_eth = rdma_port_get_link_layer(
1825 &dev->ib_dev, qp->port) ==
1826 IB_LINK_LAYER_ETHERNET;
1827 if (is_eth) {
1828 context->pri_path.ackto = MLX4_IB_LINK_TYPE_ETH;
1829 optpar |= MLX4_QP_OPTPAR_PRIMARY_ADDR_PATH;
1830 }
1831 }
1832
1833
225c7b1f
RD		 1834 if (cur_state == IB_QPS_RTS && new_state == IB_QPS_SQD &&
1835 attr_mask & IB_QP_EN_SQD_ASYNC_NOTIFY && attr->en_sqd_async_notify)
1836 sqd_event = 1;
1837 else
1838 sqd_event = 0;
1839
d57f5f72
VS		 1840 if (!ibqp->uobject && cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT)
1841 context->rlkey |= (1 << 4);
1842
c0be5fb5
EC		 1843 /*
1844 * Before passing a kernel QP to the HW, make sure that the
0e6e7416
RD		 1845 * ownership bits of the send queue are set and the SQ
1846 * headroom is stamped so that the hardware doesn't start
1847 * processing stale work requests.
c0be5fb5
EC		 1848 */
1849 if (!ibqp->uobject && cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT) {
1850 struct mlx4_wqe_ctrl_seg *ctrl;
1851 int i;
1852
0e6e7416 1853 for (i = 0; i < qp->sq.wqe_cnt; ++i) {
c0be5fb5
EC		 1854 ctrl = get_send_wqe(qp, i);
1855 ctrl->owner_opcode = cpu_to_be32(1 << 31);
9670e553
EC		 1856 if (qp->sq_max_wqes_per_wr == 1)
1857 ctrl->fence_size = 1 << (qp->sq.wqe_shift - 4);
0e6e7416 1858
ea54b10c 1859 stamp_send_wqe(qp, i, 1 << qp->sq.wqe_shift);
c0be5fb5
EC		 1860 }
1861 }
1862
225c7b1f
RD		 1863 err = mlx4_qp_modify(dev->dev, &qp->mtt, to_mlx4_state(cur_state),
1864 to_mlx4_state(new_state), context, optpar,
1865 sqd_event, &qp->mqp);
1866 if (err)
1867 goto out;
1868
1869 qp->state = new_state;
1870
1871 if (attr_mask & IB_QP_ACCESS_FLAGS)
1872 qp->atomic_rd_en = attr->qp_access_flags;
1873 if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC)
1874 qp->resp_depth = attr->max_dest_rd_atomic;
fa417f7b 1875 if (attr_mask & IB_QP_PORT) {
225c7b1f 1876 qp->port = attr->port_num;
fa417f7b
EC		 1877 update_mcg_macs(dev, qp);
1878 }
225c7b1f
RD		 1879 if (attr_mask & IB_QP_ALT_PATH)
1880 qp->alt_port = attr->alt_port_num;
1881
1882 if (is_sqp(dev, qp))
1883 store_sqp_attrs(to_msqp(qp), attr, attr_mask);
1884
1885 /*
1886 * If we moved QP0 to RTR, bring the IB link up; if we moved
1887 * QP0 to RESET or ERROR, bring the link back down.
1888 */
1889 if (is_qp0(dev, qp)) {
1890 if (cur_state != IB_QPS_RTR && new_state == IB_QPS_RTR)
5ae2a7a8 1891 if (mlx4_INIT_PORT(dev->dev, qp->port))
987c8f8f 1892 pr_warn("INIT_PORT failed for port %d\n",
5ae2a7a8 1893 qp->port);
225c7b1f
RD		 1894
1895 if (cur_state != IB_QPS_RESET && cur_state != IB_QPS_ERR &&
1896 (new_state == IB_QPS_RESET || new_state == IB_QPS_ERR))
1897 mlx4_CLOSE_PORT(dev->dev, qp->port);
1898 }
1899
1900 /*
1901 * If we moved a kernel QP to RESET, clean up all old CQ
1902 * entries and reinitialize the QP.
1903 */
2f5bb473
JM		 1904 if (new_state == IB_QPS_RESET) {
1905 if (!ibqp->uobject) {
1906 mlx4_ib_cq_clean(recv_cq, qp->mqp.qpn,
1907 ibqp->srq ? to_msrq(ibqp->srq) : NULL);
1908 if (send_cq != recv_cq)
1909 mlx4_ib_cq_clean(send_cq, qp->mqp.qpn, NULL);
1910
1911 qp->rq.head = 0;
1912 qp->rq.tail = 0;
1913 qp->sq.head = 0;
1914 qp->sq.tail = 0;
1915 qp->sq_next_wqe = 0;
1916 if (qp->rq.wqe_cnt)
1917 *qp->db.db = 0;
225c7b1f 1918
2f5bb473
JM		 1919 if (qp->flags & MLX4_IB_QP_NETIF)
1920 mlx4_ib_steer_qp_reg(dev, qp, 0);
1921 }
25476b02 1922 if (qp->pri.smac || (!qp->pri.smac && qp->pri.smac_port)) {
2f5bb473
JM		 1923 mlx4_unregister_mac(dev->dev, qp->pri.smac_port, qp->pri.smac);
1924 qp->pri.smac = 0;
25476b02 1925 qp->pri.smac_port = 0;
2f5bb473
JM		 1926 }
1927 if (qp->alt.smac) {
1928 mlx4_unregister_mac(dev->dev, qp->alt.smac_port, qp->alt.smac);
1929 qp->alt.smac = 0;
1930 }
1931 if (qp->pri.vid < 0x1000) {
1932 mlx4_unregister_vlan(dev->dev, qp->pri.vlan_port, qp->pri.vid);
1933 qp->pri.vid = 0xFFFF;
1934 qp->pri.candidate_vid = 0xFFFF;
1935 qp->pri.update_vid = 0;
1936 }
c1c98501 1937
2f5bb473
JM		 1938 if (qp->alt.vid < 0x1000) {
1939 mlx4_unregister_vlan(dev->dev, qp->alt.vlan_port, qp->alt.vid);
1940 qp->alt.vid = 0xFFFF;
1941 qp->alt.candidate_vid = 0xFFFF;
1942 qp->alt.update_vid = 0;
1943 }
225c7b1f 1944 }
225c7b1f 1945out:
7b59f0f9
EBE		 1946 if (err && qp->counter_index)
1947 mlx4_ib_free_qp_counter(dev, qp);
c1c98501
MB		 1948 if (err && steer_qp)
1949 mlx4_ib_steer_qp_reg(dev, qp, 0);
225c7b1f 1950 kfree(context);
25476b02
JM		 1951 if (qp->pri.candidate_smac ||
1952 (!qp->pri.candidate_smac && qp->pri.candidate_smac_port)) {
2f5bb473
JM		 1953 if (err) {
1954 mlx4_unregister_mac(dev->dev, qp->pri.candidate_smac_port, qp->pri.candidate_smac);
1955 } else {
25476b02 1956 if (qp->pri.smac || (!qp->pri.smac && qp->pri.smac_port))
2f5bb473
JM		 1957 mlx4_unregister_mac(dev->dev, qp->pri.smac_port, qp->pri.smac);
1958 qp->pri.smac = qp->pri.candidate_smac;
1959 qp->pri.smac_index = qp->pri.candidate_smac_index;
1960 qp->pri.smac_port = qp->pri.candidate_smac_port;
1961 }
1962 qp->pri.candidate_smac = 0;
1963 qp->pri.candidate_smac_index = 0;
1964 qp->pri.candidate_smac_port = 0;
1965 }
1966 if (qp->alt.candidate_smac) {
1967 if (err) {
1968 mlx4_unregister_mac(dev->dev, qp->alt.candidate_smac_port, qp->alt.candidate_smac);
1969 } else {
1970 if (qp->alt.smac)
1971 mlx4_unregister_mac(dev->dev, qp->alt.smac_port, qp->alt.smac);
1972 qp->alt.smac = qp->alt.candidate_smac;
1973 qp->alt.smac_index = qp->alt.candidate_smac_index;
1974 qp->alt.smac_port = qp->alt.candidate_smac_port;
1975 }
1976 qp->alt.candidate_smac = 0;
1977 qp->alt.candidate_smac_index = 0;
1978 qp->alt.candidate_smac_port = 0;
1979 }
1980
1981 if (qp->pri.update_vid) {
1982 if (err) {
1983 if (qp->pri.candidate_vid < 0x1000)
1984 mlx4_unregister_vlan(dev->dev, qp->pri.candidate_vlan_port,
1985 qp->pri.candidate_vid);
1986 } else {
1987 if (qp->pri.vid < 0x1000)
1988 mlx4_unregister_vlan(dev->dev, qp->pri.vlan_port,
1989 qp->pri.vid);
1990 qp->pri.vid = qp->pri.candidate_vid;
1991 qp->pri.vlan_port = qp->pri.candidate_vlan_port;
1992 qp->pri.vlan_index = qp->pri.candidate_vlan_index;
1993 }
1994 qp->pri.candidate_vid = 0xFFFF;
1995 qp->pri.update_vid = 0;
1996 }
1997
1998 if (qp->alt.update_vid) {
1999 if (err) {
2000 if (qp->alt.candidate_vid < 0x1000)
2001 mlx4_unregister_vlan(dev->dev, qp->alt.candidate_vlan_port,
2002 qp->alt.candidate_vid);
2003 } else {
2004 if (qp->alt.vid < 0x1000)
2005 mlx4_unregister_vlan(dev->dev, qp->alt.vlan_port,
2006 qp->alt.vid);
2007 qp->alt.vid = qp->alt.candidate_vid;
2008 qp->alt.vlan_port = qp->alt.candidate_vlan_port;
2009 qp->alt.vlan_index = qp->alt.candidate_vlan_index;
2010 }
2011 qp->alt.candidate_vid = 0xFFFF;
2012 qp->alt.update_vid = 0;
2013 }
2014
225c7b1f
RD		 2015 return err;
2016}
2017
65adfa91
MT		 2018int mlx4_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
2019 int attr_mask, struct ib_udata *udata)
2020{
2021 struct mlx4_ib_dev *dev = to_mdev(ibqp->device);
2022 struct mlx4_ib_qp *qp = to_mqp(ibqp);
2023 enum ib_qp_state cur_state, new_state;
2024 int err = -EINVAL;
297e0dad 2025 int ll;
65adfa91
MT		 2026 mutex_lock(&qp->mutex);
2027
2028 cur_state = attr_mask & IB_QP_CUR_STATE ? attr->cur_qp_state : qp->state;
2029 new_state = attr_mask & IB_QP_STATE ? attr->qp_state : cur_state;
2030
297e0dad
MS		 2031 if (cur_state == new_state && cur_state == IB_QPS_RESET) {
2032 ll = IB_LINK_LAYER_UNSPECIFIED;
2033 } else {
2034 int port = attr_mask & IB_QP_PORT ? attr->port_num : qp->port;
2035 ll = rdma_port_get_link_layer(&dev->ib_dev, port);
2036 }
dd5f03be
MB		 2037
2038 if (!ib_modify_qp_is_ok(cur_state, new_state, ibqp->qp_type,
297e0dad 2039 attr_mask, ll)) {
b1d8eb5a
JM		 2040 pr_debug("qpn 0x%x: invalid attribute mask specified "
2041 "for transition %d to %d. qp_type %d,"
2042 " attr_mask 0x%x\n",
2043 ibqp->qp_num, cur_state, new_state,
2044 ibqp->qp_type, attr_mask);
65adfa91 2045 goto out;
b1d8eb5a 2046 }
65adfa91 2047
c6215745
MS		 2048 if (mlx4_is_bonded(dev->dev) && (attr_mask & IB_QP_PORT)) {
2049 if ((cur_state == IB_QPS_RESET) && (new_state == IB_QPS_INIT)) {
2050 if ((ibqp->qp_type == IB_QPT_RC) ||
2051 (ibqp->qp_type == IB_QPT_UD) ||
2052 (ibqp->qp_type == IB_QPT_UC) ||
2053 (ibqp->qp_type == IB_QPT_RAW_PACKET) ||
2054 (ibqp->qp_type == IB_QPT_XRC_INI)) {
2055 attr->port_num = mlx4_ib_bond_next_port(dev);
2056 }
2057 } else {
2058 /* no sense in changing port_num
2059 * when ports are bonded */
2060 attr_mask &= ~IB_QP_PORT;
2061 }
2062 }
2063
65adfa91 2064 if ((attr_mask & IB_QP_PORT) &&
1ffeb2eb 2065 (attr->port_num == 0 || attr->port_num > dev->num_ports)) {
b1d8eb5a
JM		 2066 pr_debug("qpn 0x%x: invalid port number (%d) specified "
2067 "for transition %d to %d. qp_type %d\n",
2068 ibqp->qp_num, attr->port_num, cur_state,
2069 new_state, ibqp->qp_type);
65adfa91
MT		 2070 goto out;
2071 }
2072
3987a2d3
OG		 2073 if ((attr_mask & IB_QP_PORT) && (ibqp->qp_type == IB_QPT_RAW_PACKET) &&
2074 (rdma_port_get_link_layer(&dev->ib_dev, attr->port_num) !=
2075 IB_LINK_LAYER_ETHERNET))
2076 goto out;
2077
5ae2a7a8
RD		 2078 if (attr_mask & IB_QP_PKEY_INDEX) {
2079 int p = attr_mask & IB_QP_PORT ? attr->port_num : qp->port;
b1d8eb5a
JM		 2080 if (attr->pkey_index >= dev->dev->caps.pkey_table_len[p]) {
2081 pr_debug("qpn 0x%x: invalid pkey index (%d) specified "
2082 "for transition %d to %d. qp_type %d\n",
2083 ibqp->qp_num, attr->pkey_index, cur_state,
2084 new_state, ibqp->qp_type);
5ae2a7a8 2085 goto out;
b1d8eb5a 2086 }
5ae2a7a8
RD		 2087 }
2088
65adfa91
MT		 2089 if (attr_mask & IB_QP_MAX_QP_RD_ATOMIC &&
2090 attr->max_rd_atomic > dev->dev->caps.max_qp_init_rdma) {
b1d8eb5a
JM		 2091 pr_debug("qpn 0x%x: max_rd_atomic (%d) too large. "
2092 "Transition %d to %d. qp_type %d\n",
2093 ibqp->qp_num, attr->max_rd_atomic, cur_state,
2094 new_state, ibqp->qp_type);
65adfa91
MT		 2095 goto out;
2096 }
2097
2098 if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC &&
2099 attr->max_dest_rd_atomic > dev->dev->caps.max_qp_dest_rdma) {
b1d8eb5a
JM		 2100 pr_debug("qpn 0x%x: max_dest_rd_atomic (%d) too large. "
2101 "Transition %d to %d. qp_type %d\n",
2102 ibqp->qp_num, attr->max_dest_rd_atomic, cur_state,
2103 new_state, ibqp->qp_type);
65adfa91
MT		 2104 goto out;
2105 }
2106
2107 if (cur_state == new_state && cur_state == IB_QPS_RESET) {
2108 err = 0;
2109 goto out;
2110 }
2111
65adfa91
MT		 2112 err = __mlx4_ib_modify_qp(ibqp, attr, attr_mask, cur_state, new_state);
2113
c6215745
MS		 2114 if (mlx4_is_bonded(dev->dev) && (attr_mask & IB_QP_PORT))
2115 attr->port_num = 1;
2116
65adfa91
MT		 2117out:
2118 mutex_unlock(&qp->mutex);
2119 return err;
2120}
2121
99ec41d0
JM		 2122static int vf_get_qp0_qkey(struct mlx4_dev *dev, int qpn, u32 *qkey)
2123{
2124 int i;
2125 for (i = 0; i < dev->caps.num_ports; i++) {
2126 if (qpn == dev->caps.qp0_proxy[i] ||
2127 qpn == dev->caps.qp0_tunnel[i]) {
2128 *qkey = dev->caps.qp0_qkey[i];
2129 return 0;
2130 }
2131 }
2132 return -EINVAL;
2133}
2134
1ffeb2eb 2135static int build_sriov_qp0_header(struct mlx4_ib_sqp *sqp,
e622f2f4 2136 struct ib_ud_wr *wr,
1ffeb2eb
JM		 2137 void *wqe, unsigned *mlx_seg_len)
2138{
2139 struct mlx4_ib_dev *mdev = to_mdev(sqp->qp.ibqp.device);
2140 struct ib_device *ib_dev = &mdev->ib_dev;
2141 struct mlx4_wqe_mlx_seg *mlx = wqe;
2142 struct mlx4_wqe_inline_seg *inl = wqe + sizeof *mlx;
e622f2f4 2143 struct mlx4_ib_ah *ah = to_mah(wr->ah);
1ffeb2eb
JM		 2144 u16 pkey;
2145 u32 qkey;
2146 int send_size;
2147 int header_size;
2148 int spc;
2149 int i;
2150
e622f2f4 2151 if (wr->wr.opcode != IB_WR_SEND)
1ffeb2eb
JM		 2152 return -EINVAL;
2153
2154 send_size = 0;
2155
e622f2f4
CH		 2156 for (i = 0; i < wr->wr.num_sge; ++i)
2157 send_size += wr->wr.sg_list[i].length;
1ffeb2eb
JM		 2158
2159 /* for proxy-qp0 sends, need to add in size of tunnel header */
2160 /* for tunnel-qp0 sends, tunnel header is already in s/g list */
2161 if (sqp->qp.mlx4_ib_qp_type == MLX4_IB_QPT_PROXY_SMI_OWNER)
2162 send_size += sizeof (struct mlx4_ib_tunnel_header);
2163
2164 ib_ud_header_init(send_size, 1, 0, 0, 0, 0, &sqp->ud_header);
2165
2166 if (sqp->qp.mlx4_ib_qp_type == MLX4_IB_QPT_PROXY_SMI_OWNER) {
2167 sqp->ud_header.lrh.service_level =
2168 be32_to_cpu(ah->av.ib.sl_tclass_flowlabel) >> 28;
2169 sqp->ud_header.lrh.destination_lid =
2170 cpu_to_be16(ah->av.ib.g_slid & 0x7f);
2171 sqp->ud_header.lrh.source_lid =
2172 cpu_to_be16(ah->av.ib.g_slid & 0x7f);
2173 }
2174
2175 mlx->flags &= cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE);
2176
2177 /* force loopback */
2178 mlx->flags |= cpu_to_be32(MLX4_WQE_MLX_VL15 | 0x1 | MLX4_WQE_MLX_SLR);
2179 mlx->rlid = sqp->ud_header.lrh.destination_lid;
2180
2181 sqp->ud_header.lrh.virtual_lane = 0;
e622f2f4 2182 sqp->ud_header.bth.solicited_event = !!(wr->wr.send_flags & IB_SEND_SOLICITED);
1ffeb2eb
JM		 2183 ib_get_cached_pkey(ib_dev, sqp->qp.port, 0, &pkey);
2184 sqp->ud_header.bth.pkey = cpu_to_be16(pkey);
2185 if (sqp->qp.mlx4_ib_qp_type == MLX4_IB_QPT_TUN_SMI_OWNER)
e622f2f4 2186 sqp->ud_header.bth.destination_qpn = cpu_to_be32(wr->remote_qpn);
1ffeb2eb
JM		 2187 else
2188 sqp->ud_header.bth.destination_qpn =
47605df9 2189 cpu_to_be32(mdev->dev->caps.qp0_tunnel[sqp->qp.port - 1]);
1ffeb2eb
JM		 2190
2191 sqp->ud_header.bth.psn = cpu_to_be32((sqp->send_psn++) & ((1 << 24) - 1));
99ec41d0
JM		 2192 if (mlx4_is_master(mdev->dev)) {
2193 if (mlx4_get_parav_qkey(mdev->dev, sqp->qp.mqp.qpn, &qkey))
2194 return -EINVAL;
2195 } else {
2196 if (vf_get_qp0_qkey(mdev->dev, sqp->qp.mqp.qpn, &qkey))
2197 return -EINVAL;
2198 }
1ffeb2eb
JM		 2199 sqp->ud_header.deth.qkey = cpu_to_be32(qkey);
2200 sqp->ud_header.deth.source_qpn = cpu_to_be32(sqp->qp.mqp.qpn);
2201
2202 sqp->ud_header.bth.opcode = IB_OPCODE_UD_SEND_ONLY;
2203 sqp->ud_header.immediate_present = 0;
2204
2205 header_size = ib_ud_header_pack(&sqp->ud_header, sqp->header_buf);
2206
2207 /*
2208 * Inline data segments may not cross a 64 byte boundary. If
2209 * our UD header is bigger than the space available up to the
2210 * next 64 byte boundary in the WQE, use two inline data
2211 * segments to hold the UD header.
2212 */
2213 spc = MLX4_INLINE_ALIGN -
2214 ((unsigned long) (inl + 1) & (MLX4_INLINE_ALIGN - 1));
2215 if (header_size <= spc) {
2216 inl->byte_count = cpu_to_be32(1 << 31 | header_size);
2217 memcpy(inl + 1, sqp->header_buf, header_size);
2218 i = 1;
2219 } else {
2220 inl->byte_count = cpu_to_be32(1 << 31 | spc);
2221 memcpy(inl + 1, sqp->header_buf, spc);
2222
2223 inl = (void *) (inl + 1) + spc;
2224 memcpy(inl + 1, sqp->header_buf + spc, header_size - spc);
2225 /*
2226 * Need a barrier here to make sure all the data is
2227 * visible before the byte_count field is set.
2228 * Otherwise the HCA prefetcher could grab the 64-byte
2229 * chunk with this inline segment and get a valid (!=
2230 * 0xffffffff) byte count but stale data, and end up
2231 * generating a packet with bad headers.
2232 *
2233 * The first inline segment's byte_count field doesn't
2234 * need a barrier, because it comes after a
2235 * control/MLX segment and therefore is at an offset
2236 * of 16 mod 64.
2237 */
2238 wmb();
2239 inl->byte_count = cpu_to_be32(1 << 31 | (header_size - spc));
2240 i = 2;
2241 }
2242
2243 *mlx_seg_len =
2244 ALIGN(i * sizeof (struct mlx4_wqe_inline_seg) + header_size, 16);
2245 return 0;
2246}
2247
3e0629cb
JM		 2248static void mlx4_u64_to_smac(u8 *dst_mac, u64 src_mac)
2249{
2250 int i;
2251
2252 for (i = ETH_ALEN; i; i--) {
2253 dst_mac[i - 1] = src_mac & 0xff;
2254 src_mac >>= 8;
2255 }
2256}
2257
e622f2f4 2258static int build_mlx_header(struct mlx4_ib_sqp *sqp, struct ib_ud_wr *wr,
f438000f 2259 void *wqe, unsigned *mlx_seg_len)
225c7b1f 2260{
a478868a 2261 struct ib_device *ib_dev = sqp->qp.ibqp.device;
225c7b1f 2262 struct mlx4_wqe_mlx_seg *mlx = wqe;
6ee51a4e 2263 struct mlx4_wqe_ctrl_seg *ctrl = wqe;
225c7b1f 2264 struct mlx4_wqe_inline_seg *inl = wqe + sizeof *mlx;
e622f2f4 2265 struct mlx4_ib_ah *ah = to_mah(wr->ah);
4c3eb3ca 2266 union ib_gid sgid;
225c7b1f
RD		 2267 u16 pkey;
2268 int send_size;
2269 int header_size;
e61ef241 2270 int spc;
225c7b1f 2271 int i;
1ffeb2eb 2272 int err = 0;
57d88cff 2273 u16 vlan = 0xffff;
a29bec12
RD		 2274 bool is_eth;
2275 bool is_vlan = false;
2276 bool is_grh;
225c7b1f
RD		 2277
2278 send_size = 0;
e622f2f4
CH		 2279 for (i = 0; i < wr->wr.num_sge; ++i)
2280 send_size += wr->wr.sg_list[i].length;
225c7b1f 2281
fa417f7b
EC		 2282 is_eth = rdma_port_get_link_layer(sqp->qp.ibqp.device, sqp->qp.port) == IB_LINK_LAYER_ETHERNET;
2283 is_grh = mlx4_ib_ah_grh_present(ah);
4c3eb3ca 2284 if (is_eth) {
1ffeb2eb
JM		 2285 if (mlx4_is_mfunc(to_mdev(ib_dev)->dev)) {
2286 /* When multi-function is enabled, the ib_core gid
2287 * indexes don't necessarily match the hw ones, so
2288 * we must use our own cache */
6ee51a4e
JM		 2289 err = mlx4_get_roce_gid_from_slave(to_mdev(ib_dev)->dev,
2290 be32_to_cpu(ah->av.ib.port_pd) >> 24,
2291 ah->av.ib.gid_index, &sgid.raw[0]);
2292 if (err)
2293 return err;
1ffeb2eb
JM		 2294 } else {
2295 err = ib_get_cached_gid(ib_dev,
2296 be32_to_cpu(ah->av.ib.port_pd) >> 24,
55ee3ab2
MB		 2297 ah->av.ib.gid_index, &sgid,
2298 NULL);
dbf727de
MB		 2299 if (!err && !memcmp(&sgid, &zgid, sizeof(sgid)))
2300 err = -ENOENT;
1ffeb2eb
JM		 2301 if (err)
2302 return err;
2303 }
2304
0e9855db 2305 if (ah->av.eth.vlan != cpu_to_be16(0xffff)) {
297e0dad
MS		 2306 vlan = be16_to_cpu(ah->av.eth.vlan) & 0x0fff;
2307 is_vlan = 1;
2308 }
4c3eb3ca
EC		 2309 }
2310 ib_ud_header_init(send_size, !is_eth, is_eth, is_vlan, is_grh, 0, &sqp->ud_header);
fa417f7b
EC		 2311
2312 if (!is_eth) {
2313 sqp->ud_header.lrh.service_level =
2314 be32_to_cpu(ah->av.ib.sl_tclass_flowlabel) >> 28;
2315 sqp->ud_header.lrh.destination_lid = ah->av.ib.dlid;
2316 sqp->ud_header.lrh.source_lid = cpu_to_be16(ah->av.ib.g_slid & 0x7f);
2317 }
225c7b1f 2318
fa417f7b 2319 if (is_grh) {
225c7b1f 2320 sqp->ud_header.grh.traffic_class =
fa417f7b 2321 (be32_to_cpu(ah->av.ib.sl_tclass_flowlabel) >> 20) & 0xff;
225c7b1f 2322 sqp->ud_header.grh.flow_label =
fa417f7b
EC		 2323 ah->av.ib.sl_tclass_flowlabel & cpu_to_be32(0xfffff);
2324 sqp->ud_header.grh.hop_limit = ah->av.ib.hop_limit;
6ee51a4e
JM		 2325 if (is_eth)
2326 memcpy(sqp->ud_header.grh.source_gid.raw, sgid.raw, 16);
2327 else {
1ffeb2eb
JM		 2328 if (mlx4_is_mfunc(to_mdev(ib_dev)->dev)) {
2329 /* When multi-function is enabled, the ib_core gid
2330 * indexes don't necessarily match the hw ones, so
2331 * we must use our own cache */
2332 sqp->ud_header.grh.source_gid.global.subnet_prefix =
2333 to_mdev(ib_dev)->sriov.demux[sqp->qp.port - 1].
2334 subnet_prefix;
2335 sqp->ud_header.grh.source_gid.global.interface_id =
2336 to_mdev(ib_dev)->sriov.demux[sqp->qp.port - 1].
2337 guid_cache[ah->av.ib.gid_index];
2338 } else
2339 ib_get_cached_gid(ib_dev,
2340 be32_to_cpu(ah->av.ib.port_pd) >> 24,
2341 ah->av.ib.gid_index,
55ee3ab2 2342 &sqp->ud_header.grh.source_gid, NULL);
6ee51a4e 2343 }
225c7b1f 2344 memcpy(sqp->ud_header.grh.destination_gid.raw,
fa417f7b 2345 ah->av.ib.dgid, 16);
225c7b1f
RD		 2346 }
2347
2348 mlx->flags &= cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE);
fa417f7b
EC		 2349
2350 if (!is_eth) {
2351 mlx->flags |= cpu_to_be32((!sqp->qp.ibqp.qp_num ? MLX4_WQE_MLX_VL15 : 0) |
2352 (sqp->ud_header.lrh.destination_lid ==
2353 IB_LID_PERMISSIVE ? MLX4_WQE_MLX_SLR : 0) |
2354 (sqp->ud_header.lrh.service_level << 8));
1ffeb2eb
JM		 2355 if (ah->av.ib.port_pd & cpu_to_be32(0x80000000))
2356 mlx->flags |= cpu_to_be32(0x1); /* force loopback */
fa417f7b
EC		 2357 mlx->rlid = sqp->ud_header.lrh.destination_lid;
2358 }
225c7b1f 2359
e622f2f4 2360 switch (wr->wr.opcode) {
225c7b1f
RD		 2361 case IB_WR_SEND:
2362 sqp->ud_header.bth.opcode = IB_OPCODE_UD_SEND_ONLY;
2363 sqp->ud_header.immediate_present = 0;
2364 break;
2365 case IB_WR_SEND_WITH_IMM:
2366 sqp->ud_header.bth.opcode = IB_OPCODE_UD_SEND_ONLY_WITH_IMMEDIATE;
2367 sqp->ud_header.immediate_present = 1;
e622f2f4 2368 sqp->ud_header.immediate_data = wr->wr.ex.imm_data;
225c7b1f
RD		 2369 break;
2370 default:
2371 return -EINVAL;
2372 }
2373
fa417f7b 2374 if (is_eth) {
6ee51a4e
JM		 2375 struct in6_addr in6;
2376
c0c1d3d7
OD		 2377 u16 pcp = (be32_to_cpu(ah->av.ib.sl_tclass_flowlabel) >> 29) << 13;
2378
2379 mlx->sched_prio = cpu_to_be16(pcp);
fa417f7b
EC		 2380
2381 memcpy(sqp->ud_header.eth.dmac_h, ah->av.eth.mac, 6);
2382 /* FIXME: cache smac value? */
6ee51a4e
JM		 2383 memcpy(&ctrl->srcrb_flags16[0], ah->av.eth.mac, 2);
2384 memcpy(&ctrl->imm, ah->av.eth.mac + 2, 4);
2385 memcpy(&in6, sgid.raw, sizeof(in6));
5ea8bbfc 2386
3e0629cb
JM		 2387 if (!mlx4_is_mfunc(to_mdev(ib_dev)->dev)) {
2388 u64 mac = atomic64_read(&to_mdev(ib_dev)->iboe.mac[sqp->qp.port - 1]);
2389 u8 smac[ETH_ALEN];
2390
2391 mlx4_u64_to_smac(smac, mac);
2392 memcpy(sqp->ud_header.eth.smac_h, smac, ETH_ALEN);
2393 } else {
2394 /* use the src mac of the tunnel */
2395 memcpy(sqp->ud_header.eth.smac_h, ah->av.eth.s_mac, ETH_ALEN);
2396 }
2397
fa417f7b
EC		 2398 if (!memcmp(sqp->ud_header.eth.smac_h, sqp->ud_header.eth.dmac_h, 6))
2399 mlx->flags |= cpu_to_be32(MLX4_WQE_CTRL_FORCE_LOOPBACK);
4c3eb3ca
EC		 2400 if (!is_vlan) {
2401 sqp->ud_header.eth.type = cpu_to_be16(MLX4_IB_IBOE_ETHERTYPE);
2402 } else {
4c3eb3ca 2403 sqp->ud_header.vlan.type = cpu_to_be16(MLX4_IB_IBOE_ETHERTYPE);
4c3eb3ca
EC		 2404 sqp->ud_header.vlan.tag = cpu_to_be16(vlan | pcp);
2405 }
fa417f7b
EC		 2406 } else {
2407 sqp->ud_header.lrh.virtual_lane = !sqp->qp.ibqp.qp_num ? 15 : 0;
2408 if (sqp->ud_header.lrh.destination_lid == IB_LID_PERMISSIVE)
2409 sqp->ud_header.lrh.source_lid = IB_LID_PERMISSIVE;
2410 }
e622f2f4 2411 sqp->ud_header.bth.solicited_event = !!(wr->wr.send_flags & IB_SEND_SOLICITED);
225c7b1f
RD		 2412 if (!sqp->qp.ibqp.qp_num)
2413 ib_get_cached_pkey(ib_dev, sqp->qp.port, sqp->pkey_index, &pkey);
2414 else
e622f2f4 2415 ib_get_cached_pkey(ib_dev, sqp->qp.port, wr->pkey_index, &pkey);
225c7b1f 2416 sqp->ud_header.bth.pkey = cpu_to_be16(pkey);
e622f2f4 2417 sqp->ud_header.bth.destination_qpn = cpu_to_be32(wr->remote_qpn);
225c7b1f 2418 sqp->ud_header.bth.psn = cpu_to_be32((sqp->send_psn++) & ((1 << 24) - 1));
e622f2f4
CH		 2419 sqp->ud_header.deth.qkey = cpu_to_be32(wr->remote_qkey & 0x80000000 ?
2420 sqp->qkey : wr->remote_qkey);
225c7b1f
RD		 2421 sqp->ud_header.deth.source_qpn = cpu_to_be32(sqp->qp.ibqp.qp_num);
2422
2423 header_size = ib_ud_header_pack(&sqp->ud_header, sqp->header_buf);
2424
2425 if (0) {
987c8f8f 2426 pr_err("built UD header of size %d:\n", header_size);
225c7b1f
RD		 2427 for (i = 0; i < header_size / 4; ++i) {
2428 if (i % 8 == 0)
987c8f8f
SP		 2429 pr_err(" [%02x] ", i * 4);
2430 pr_cont(" %08x",
2431 be32_to_cpu(((__be32 *) sqp->header_buf)[i]));
225c7b1f 2432 if ((i + 1) % 8 == 0)
987c8f8f 2433 pr_cont("\n");
225c7b1f 2434 }
987c8f8f 2435 pr_err("\n");
225c7b1f
RD		 2436 }
2437
e61ef241
RD		 2438 /*
2439 * Inline data segments may not cross a 64 byte boundary. If
2440 * our UD header is bigger than the space available up to the
2441 * next 64 byte boundary in the WQE, use two inline data
2442 * segments to hold the UD header.
2443 */
2444 spc = MLX4_INLINE_ALIGN -
2445 ((unsigned long) (inl + 1) & (MLX4_INLINE_ALIGN - 1));
2446 if (header_size <= spc) {
2447 inl->byte_count = cpu_to_be32(1 << 31 | header_size);
2448 memcpy(inl + 1, sqp->header_buf, header_size);
2449 i = 1;
2450 } else {
2451 inl->byte_count = cpu_to_be32(1 << 31 | spc);
2452 memcpy(inl + 1, sqp->header_buf, spc);
2453
2454 inl = (void *) (inl + 1) + spc;
2455 memcpy(inl + 1, sqp->header_buf + spc, header_size - spc);
2456 /*
2457 * Need a barrier here to make sure all the data is
2458 * visible before the byte_count field is set.
2459 * Otherwise the HCA prefetcher could grab the 64-byte
2460 * chunk with this inline segment and get a valid (!=
2461 * 0xffffffff) byte count but stale data, and end up
2462 * generating a packet with bad headers.
2463 *
2464 * The first inline segment's byte_count field doesn't
2465 * need a barrier, because it comes after a
2466 * control/MLX segment and therefore is at an offset
2467 * of 16 mod 64.
2468 */
2469 wmb();
2470 inl->byte_count = cpu_to_be32(1 << 31 | (header_size - spc));
2471 i = 2;
2472 }
225c7b1f 2473
f438000f
RD		 2474 *mlx_seg_len =
2475 ALIGN(i * sizeof (struct mlx4_wqe_inline_seg) + header_size, 16);
2476 return 0;
225c7b1f
RD		 2477}
2478
2479static int mlx4_wq_overflow(struct mlx4_ib_wq *wq, int nreq, struct ib_cq *ib_cq)
2480{
2481 unsigned cur;
2482 struct mlx4_ib_cq *cq;
2483
2484 cur = wq->head - wq->tail;
0e6e7416 2485 if (likely(cur + nreq < wq->max_post))
225c7b1f
RD		 2486 return 0;
2487
2488 cq = to_mcq(ib_cq);
2489 spin_lock(&cq->lock);
2490 cur = wq->head - wq->tail;
2491 spin_unlock(&cq->lock);
2492
0e6e7416 2493 return cur + nreq >= wq->max_post;
225c7b1f
RD		 2494}
2495
95d04f07
RD		 2496static __be32 convert_access(int acc)
2497{
6ff63e19
SM		 2498 return (acc & IB_ACCESS_REMOTE_ATOMIC ?
2499 cpu_to_be32(MLX4_WQE_FMR_AND_BIND_PERM_ATOMIC) : 0) |
2500 (acc & IB_ACCESS_REMOTE_WRITE ?
2501 cpu_to_be32(MLX4_WQE_FMR_AND_BIND_PERM_REMOTE_WRITE) : 0) |
2502 (acc & IB_ACCESS_REMOTE_READ ?
2503 cpu_to_be32(MLX4_WQE_FMR_AND_BIND_PERM_REMOTE_READ) : 0) |
95d04f07
RD		 2504 (acc & IB_ACCESS_LOCAL_WRITE ? cpu_to_be32(MLX4_WQE_FMR_PERM_LOCAL_WRITE) : 0) |
2505 cpu_to_be32(MLX4_WQE_FMR_PERM_LOCAL_READ);
2506}
2507
1b2cd0fc
SG		 2508static void set_reg_seg(struct mlx4_wqe_fmr_seg *fseg,
2509 struct ib_reg_wr *wr)
2510{
2511 struct mlx4_ib_mr *mr = to_mmr(wr->mr);
2512
2513 fseg->flags = convert_access(wr->access);
2514 fseg->mem_key = cpu_to_be32(wr->key);
2515 fseg->buf_list = cpu_to_be64(mr->page_map);
2516 fseg->start_addr = cpu_to_be64(mr->ibmr.iova);
2517 fseg->reg_len = cpu_to_be64(mr->ibmr.length);
2518 fseg->offset = 0; /* XXX -- is this just for ZBVA? */
2519 fseg->page_size = cpu_to_be32(ilog2(mr->ibmr.page_size));
2520 fseg->reserved[0] = 0;
2521 fseg->reserved[1] = 0;
2522}
2523
e622f2f4
CH		 2524static void set_bind_seg(struct mlx4_wqe_bind_seg *bseg,
2525 struct ib_bind_mw_wr *wr)
6ff63e19
SM		 2526{
2527 bseg->flags1 =
e622f2f4 2528 convert_access(wr->bind_info.mw_access_flags) &
6ff63e19
SM		 2529 cpu_to_be32(MLX4_WQE_FMR_AND_BIND_PERM_REMOTE_READ |
2530 MLX4_WQE_FMR_AND_BIND_PERM_REMOTE_WRITE |
2531 MLX4_WQE_FMR_AND_BIND_PERM_ATOMIC);
2532 bseg->flags2 = 0;
e622f2f4 2533 if (wr->mw->type == IB_MW_TYPE_2)
6ff63e19 2534 bseg->flags2 |= cpu_to_be32(MLX4_WQE_BIND_TYPE_2);
e622f2f4 2535 if (wr->bind_info.mw_access_flags & IB_ZERO_BASED)
6ff63e19 2536 bseg->flags2 |= cpu_to_be32(MLX4_WQE_BIND_ZERO_BASED);
e622f2f4
CH		 2537 bseg->new_rkey = cpu_to_be32(wr->rkey);
2538 bseg->lkey = cpu_to_be32(wr->bind_info.mr->lkey);
2539 bseg->addr = cpu_to_be64(wr->bind_info.addr);
2540 bseg->length = cpu_to_be64(wr->bind_info.length);
6ff63e19
SM		 2541}
2542
95d04f07
RD		 2543static void set_local_inv_seg(struct mlx4_wqe_local_inval_seg *iseg, u32 rkey)
2544{
aee38fad
SM		 2545 memset(iseg, 0, sizeof(*iseg));
2546 iseg->mem_key = cpu_to_be32(rkey);
95d04f07
RD		 2547}
2548
0fbfa6a9
RD		 2549static __always_inline void set_raddr_seg(struct mlx4_wqe_raddr_seg *rseg,
2550 u64 remote_addr, u32 rkey)
2551{
2552 rseg->raddr = cpu_to_be64(remote_addr);
2553 rseg->rkey = cpu_to_be32(rkey);
2554 rseg->reserved = 0;
2555}
2556
e622f2f4
CH		 2557static void set_atomic_seg(struct mlx4_wqe_atomic_seg *aseg,
2558 struct ib_atomic_wr *wr)
0fbfa6a9 2559{
e622f2f4
CH		 2560 if (wr->wr.opcode == IB_WR_ATOMIC_CMP_AND_SWP) {
2561 aseg->swap_add = cpu_to_be64(wr->swap);
2562 aseg->compare = cpu_to_be64(wr->compare_add);
2563 } else if (wr->wr.opcode == IB_WR_MASKED_ATOMIC_FETCH_AND_ADD) {
2564 aseg->swap_add = cpu_to_be64(wr->compare_add);
2565 aseg->compare = cpu_to_be64(wr->compare_add_mask);
0fbfa6a9 2566 } else {
e622f2f4 2567 aseg->swap_add = cpu_to_be64(wr->compare_add);
0fbfa6a9
RD		 2568 aseg->compare = 0;
2569 }
2570
2571}
2572
6fa8f719 2573static void set_masked_atomic_seg(struct mlx4_wqe_masked_atomic_seg *aseg,
e622f2f4 2574 struct ib_atomic_wr *wr)
6fa8f719 2575{
e622f2f4
CH		 2576 aseg->swap_add = cpu_to_be64(wr->swap);
2577 aseg->swap_add_mask = cpu_to_be64(wr->swap_mask);
2578 aseg->compare = cpu_to_be64(wr->compare_add);
2579 aseg->compare_mask = cpu_to_be64(wr->compare_add_mask);
6fa8f719
VS		 2580}
2581
0fbfa6a9 2582static void set_datagram_seg(struct mlx4_wqe_datagram_seg *dseg,
e622f2f4 2583 struct ib_ud_wr *wr)
0fbfa6a9 2584{
e622f2f4
CH		 2585 memcpy(dseg->av, &to_mah(wr->ah)->av, sizeof (struct mlx4_av));
2586 dseg->dqpn = cpu_to_be32(wr->remote_qpn);
2587 dseg->qkey = cpu_to_be32(wr->remote_qkey);
2588 dseg->vlan = to_mah(wr->ah)->av.eth.vlan;
2589 memcpy(dseg->mac, to_mah(wr->ah)->av.eth.mac, 6);
0fbfa6a9
RD		 2590}
2591
1ffeb2eb
JM		 2592static void set_tunnel_datagram_seg(struct mlx4_ib_dev *dev,
2593 struct mlx4_wqe_datagram_seg *dseg,
e622f2f4 2594 struct ib_ud_wr *wr,
97982f5a 2595 enum mlx4_ib_qp_type qpt)
1ffeb2eb 2596{
e622f2f4 2597 union mlx4_ext_av *av = &to_mah(wr->ah)->av;
1ffeb2eb
JM		 2598 struct mlx4_av sqp_av = {0};
2599 int port = *((u8 *) &av->ib.port_pd) & 0x3;
2600
2601 /* force loopback */
2602 sqp_av.port_pd = av->ib.port_pd | cpu_to_be32(0x80000000);
2603 sqp_av.g_slid = av->ib.g_slid & 0x7f; /* no GRH */
2604 sqp_av.sl_tclass_flowlabel = av->ib.sl_tclass_flowlabel &
2605 cpu_to_be32(0xf0000000);
2606
2607 memcpy(dseg->av, &sqp_av, sizeof (struct mlx4_av));
97982f5a
JM		 2608 if (qpt == MLX4_IB_QPT_PROXY_GSI)
2609 dseg->dqpn = cpu_to_be32(dev->dev->caps.qp1_tunnel[port - 1]);
2610 else
2611 dseg->dqpn = cpu_to_be32(dev->dev->caps.qp0_tunnel[port - 1]);
47605df9
JM		 2612 /* Use QKEY from the QP context, which is set by master */
2613 dseg->qkey = cpu_to_be32(IB_QP_SET_QKEY);
1ffeb2eb
JM		 2614}
2615
e622f2f4 2616static void build_tunnel_header(struct ib_ud_wr *wr, void *wqe, unsigned *mlx_seg_len)
1ffeb2eb
JM		 2617{
2618 struct mlx4_wqe_inline_seg *inl = wqe;
2619 struct mlx4_ib_tunnel_header hdr;
e622f2f4 2620 struct mlx4_ib_ah *ah = to_mah(wr->ah);
1ffeb2eb
JM		 2621 int spc;
2622 int i;
2623
2624 memcpy(&hdr.av, &ah->av, sizeof hdr.av);
e622f2f4
CH		 2625 hdr.remote_qpn = cpu_to_be32(wr->remote_qpn);
2626 hdr.pkey_index = cpu_to_be16(wr->pkey_index);
2627 hdr.qkey = cpu_to_be32(wr->remote_qkey);
5ea8bbfc
JM		 2628 memcpy(hdr.mac, ah->av.eth.mac, 6);
2629 hdr.vlan = ah->av.eth.vlan;
1ffeb2eb
JM		 2630
2631 spc = MLX4_INLINE_ALIGN -
2632 ((unsigned long) (inl + 1) & (MLX4_INLINE_ALIGN - 1));
2633 if (sizeof (hdr) <= spc) {
2634 memcpy(inl + 1, &hdr, sizeof (hdr));
2635 wmb();
2636 inl->byte_count = cpu_to_be32(1 << 31 | sizeof (hdr));
2637 i = 1;
2638 } else {
2639 memcpy(inl + 1, &hdr, spc);
2640 wmb();
2641 inl->byte_count = cpu_to_be32(1 << 31 | spc);
2642
2643 inl = (void *) (inl + 1) + spc;
2644 memcpy(inl + 1, (void *) &hdr + spc, sizeof (hdr) - spc);
2645 wmb();
2646 inl->byte_count = cpu_to_be32(1 << 31 | (sizeof (hdr) - spc));
2647 i = 2;
2648 }
2649
2650 *mlx_seg_len =
2651 ALIGN(i * sizeof (struct mlx4_wqe_inline_seg) + sizeof (hdr), 16);
2652}
2653
6e694ea3
JM		 2654static void set_mlx_icrc_seg(void *dseg)
2655{
2656 u32 *t = dseg;
2657 struct mlx4_wqe_inline_seg *iseg = dseg;
2658
2659 t[1] = 0;
2660
2661 /*
2662 * Need a barrier here before writing the byte_count field to
2663 * make sure that all the data is visible before the
2664 * byte_count field is set. Otherwise, if the segment begins
2665 * a new cacheline, the HCA prefetcher could grab the 64-byte
2666 * chunk and get a valid (!= * 0xffffffff) byte count but
2667 * stale data, and end up sending the wrong data.
2668 */
2669 wmb();
2670
2671 iseg->byte_count = cpu_to_be32((1 << 31) | 4);
2672}
2673
2674static void set_data_seg(struct mlx4_wqe_data_seg *dseg, struct ib_sge *sg)
d420d9e3 2675{
d420d9e3
RD		 2676 dseg->lkey = cpu_to_be32(sg->lkey);
2677 dseg->addr = cpu_to_be64(sg->addr);
6e694ea3
JM		 2678
2679 /*
2680 * Need a barrier here before writing the byte_count field to
2681 * make sure that all the data is visible before the
2682 * byte_count field is set. Otherwise, if the segment begins
2683 * a new cacheline, the HCA prefetcher could grab the 64-byte
2684 * chunk and get a valid (!= * 0xffffffff) byte count but
2685 * stale data, and end up sending the wrong data.
2686 */
2687 wmb();
2688
2689 dseg->byte_count = cpu_to_be32(sg->length);
d420d9e3
RD		 2690}
2691
2242fa4f
RD		 2692static void __set_data_seg(struct mlx4_wqe_data_seg *dseg, struct ib_sge *sg)
2693{
2694 dseg->byte_count = cpu_to_be32(sg->length);
2695 dseg->lkey = cpu_to_be32(sg->lkey);
2696 dseg->addr = cpu_to_be64(sg->addr);
2697}
2698
e622f2f4 2699static int build_lso_seg(struct mlx4_wqe_lso_seg *wqe, struct ib_ud_wr *wr,
0fd7e1d8 2700 struct mlx4_ib_qp *qp, unsigned *lso_seg_len,
417608c2 2701 __be32 *lso_hdr_sz, __be32 *blh)
b832be1e 2702{
e622f2f4 2703 unsigned halign = ALIGN(sizeof *wqe + wr->hlen, 16);
b832be1e 2704
417608c2
EC		 2705 if (unlikely(halign > MLX4_IB_CACHE_LINE_SIZE))
2706 *blh = cpu_to_be32(1 << 6);
b832be1e
EC		 2707
2708 if (unlikely(!(qp->flags & MLX4_IB_QP_LSO) &&
e622f2f4 2709 wr->wr.num_sge > qp->sq.max_gs - (halign >> 4)))
b832be1e
EC		 2710 return -EINVAL;
2711
e622f2f4 2712 memcpy(wqe->header, wr->header, wr->hlen);
b832be1e 2713
e622f2f4 2714 *lso_hdr_sz = cpu_to_be32(wr->mss << 16 | wr->hlen);
b832be1e
EC		 2715 *lso_seg_len = halign;
2716 return 0;
2717}
2718
95d04f07
RD		 2719static __be32 send_ieth(struct ib_send_wr *wr)
2720{
2721 switch (wr->opcode) {
2722 case IB_WR_SEND_WITH_IMM:
2723 case IB_WR_RDMA_WRITE_WITH_IMM:
2724 return wr->ex.imm_data;
2725
2726 case IB_WR_SEND_WITH_INV:
2727 return cpu_to_be32(wr->ex.invalidate_rkey);
2728
2729 default:
2730 return 0;
2731 }
2732}
2733
1ffeb2eb
JM		 2734static void add_zero_len_inline(void *wqe)
2735{
2736 struct mlx4_wqe_inline_seg *inl = wqe;
2737 memset(wqe, 0, 16);
2738 inl->byte_count = cpu_to_be32(1 << 31);
2739}
2740
225c7b1f
RD		 2741int mlx4_ib_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
2742 struct ib_send_wr **bad_wr)
2743{
2744 struct mlx4_ib_qp *qp = to_mqp(ibqp);
2745 void *wqe;
2746 struct mlx4_wqe_ctrl_seg *ctrl;
6e694ea3 2747 struct mlx4_wqe_data_seg *dseg;
225c7b1f
RD		 2748 unsigned long flags;
2749 int nreq;
2750 int err = 0;
ea54b10c
JM		 2751 unsigned ind;
2752 int uninitialized_var(stamp);
2753 int uninitialized_var(size);
a3d8e159 2754 unsigned uninitialized_var(seglen);
0fd7e1d8
RD		 2755 __be32 dummy;
2756 __be32 *lso_wqe;
2757 __be32 uninitialized_var(lso_hdr_sz);
417608c2 2758 __be32 blh;
225c7b1f 2759 int i;
35f05dab 2760 struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
225c7b1f 2761
96db0e03 2762 spin_lock_irqsave(&qp->sq.lock, flags);
35f05dab
YH		 2763 if (mdev->dev->persist->state & MLX4_DEVICE_STATE_INTERNAL_ERROR) {
2764 err = -EIO;
2765 *bad_wr = wr;
2766 nreq = 0;
2767 goto out;
2768 }
225c7b1f 2769
ea54b10c 2770 ind = qp->sq_next_wqe;
225c7b1f
RD		 2771
2772 for (nreq = 0; wr; ++nreq, wr = wr->next) {
0fd7e1d8 2773 lso_wqe = &dummy;
417608c2 2774 blh = 0;
0fd7e1d8 2775
225c7b1f
RD		 2776 if (mlx4_wq_overflow(&qp->sq, nreq, qp->ibqp.send_cq)) {
2777 err = -ENOMEM;
2778 *bad_wr = wr;
2779 goto out;
2780 }
2781
2782 if (unlikely(wr->num_sge > qp->sq.max_gs)) {
2783 err = -EINVAL;
2784 *bad_wr = wr;
2785 goto out;
2786 }
2787
0e6e7416 2788 ctrl = wqe = get_send_wqe(qp, ind & (qp->sq.wqe_cnt - 1));
ea54b10c 2789 qp->sq.wrid[(qp->sq.head + nreq) & (qp->sq.wqe_cnt - 1)] = wr->wr_id;
225c7b1f
RD		 2790
2791 ctrl->srcrb_flags =
2792 (wr->send_flags & IB_SEND_SIGNALED ?
2793 cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE) : 0) |
2794 (wr->send_flags & IB_SEND_SOLICITED ?
2795 cpu_to_be32(MLX4_WQE_CTRL_SOLICITED) : 0) |
8ff095ec
EC		 2796 ((wr->send_flags & IB_SEND_IP_CSUM) ?
2797 cpu_to_be32(MLX4_WQE_CTRL_IP_CSUM |
2798 MLX4_WQE_CTRL_TCP_UDP_CSUM) : 0) |
225c7b1f
RD		 2799 qp->sq_signal_bits;
2800
95d04f07 2801 ctrl->imm = send_ieth(wr);
225c7b1f
RD		 2802
2803 wqe += sizeof *ctrl;
2804 size = sizeof *ctrl / 16;
2805
1ffeb2eb
JM		 2806 switch (qp->mlx4_ib_qp_type) {
2807 case MLX4_IB_QPT_RC:
2808 case MLX4_IB_QPT_UC:
225c7b1f
RD		 2809 switch (wr->opcode) {
2810 case IB_WR_ATOMIC_CMP_AND_SWP:
2811 case IB_WR_ATOMIC_FETCH_AND_ADD:
6fa8f719 2812 case IB_WR_MASKED_ATOMIC_FETCH_AND_ADD:
e622f2f4
CH		 2813 set_raddr_seg(wqe, atomic_wr(wr)->remote_addr,
2814 atomic_wr(wr)->rkey);
225c7b1f
RD		 2815 wqe += sizeof (struct mlx4_wqe_raddr_seg);
2816
e622f2f4 2817 set_atomic_seg(wqe, atomic_wr(wr));
225c7b1f 2818 wqe += sizeof (struct mlx4_wqe_atomic_seg);
0fbfa6a9 2819
225c7b1f
RD		 2820 size += (sizeof (struct mlx4_wqe_raddr_seg) +
2821 sizeof (struct mlx4_wqe_atomic_seg)) / 16;
6fa8f719
VS		 2822
2823 break;
2824
2825 case IB_WR_MASKED_ATOMIC_CMP_AND_SWP:
e622f2f4
CH		 2826 set_raddr_seg(wqe, atomic_wr(wr)->remote_addr,
2827 atomic_wr(wr)->rkey);
6fa8f719
VS		 2828 wqe += sizeof (struct mlx4_wqe_raddr_seg);
2829
e622f2f4 2830 set_masked_atomic_seg(wqe, atomic_wr(wr));
6fa8f719
VS		 2831 wqe += sizeof (struct mlx4_wqe_masked_atomic_seg);
2832
2833 size += (sizeof (struct mlx4_wqe_raddr_seg) +
2834 sizeof (struct mlx4_wqe_masked_atomic_seg)) / 16;
225c7b1f
RD		 2835
2836 break;
2837
2838 case IB_WR_RDMA_READ:
2839 case IB_WR_RDMA_WRITE:
2840 case IB_WR_RDMA_WRITE_WITH_IMM:
e622f2f4
CH		 2841 set_raddr_seg(wqe, rdma_wr(wr)->remote_addr,
2842 rdma_wr(wr)->rkey);
225c7b1f
RD		 2843 wqe += sizeof (struct mlx4_wqe_raddr_seg);
2844 size += sizeof (struct mlx4_wqe_raddr_seg) / 16;
225c7b1f 2845 break;
95d04f07
RD		 2846
2847 case IB_WR_LOCAL_INV:
2ac6bf4d
JM		 2848 ctrl->srcrb_flags |=
2849 cpu_to_be32(MLX4_WQE_CTRL_STRONG_ORDER);
95d04f07
RD		 2850 set_local_inv_seg(wqe, wr->ex.invalidate_rkey);
2851 wqe += sizeof (struct mlx4_wqe_local_inval_seg);
2852 size += sizeof (struct mlx4_wqe_local_inval_seg) / 16;
2853 break;
2854
1b2cd0fc
SG		 2855 case IB_WR_REG_MR:
2856 ctrl->srcrb_flags |=
2857 cpu_to_be32(MLX4_WQE_CTRL_STRONG_ORDER);
2858 set_reg_seg(wqe, reg_wr(wr));
2859 wqe += sizeof(struct mlx4_wqe_fmr_seg);
2860 size += sizeof(struct mlx4_wqe_fmr_seg) / 16;
2861 break;
2862
6ff63e19
SM		 2863 case IB_WR_BIND_MW:
2864 ctrl->srcrb_flags |=
2865 cpu_to_be32(MLX4_WQE_CTRL_STRONG_ORDER);
e622f2f4 2866 set_bind_seg(wqe, bind_mw_wr(wr));
6ff63e19
SM		 2867 wqe += sizeof(struct mlx4_wqe_bind_seg);
2868 size += sizeof(struct mlx4_wqe_bind_seg) / 16;
2869 break;
225c7b1f
RD		 2870 default:
2871 /* No extra segments required for sends */
2872 break;
2873 }
2874 break;
2875
1ffeb2eb 2876 case MLX4_IB_QPT_TUN_SMI_OWNER:
e622f2f4
CH		 2877 err = build_sriov_qp0_header(to_msqp(qp), ud_wr(wr),
2878 ctrl, &seglen);
1ffeb2eb
JM		 2879 if (unlikely(err)) {
2880 *bad_wr = wr;
2881 goto out;
2882 }
2883 wqe += seglen;
2884 size += seglen / 16;
2885 break;
2886 case MLX4_IB_QPT_TUN_SMI:
2887 case MLX4_IB_QPT_TUN_GSI:
2888 /* this is a UD qp used in MAD responses to slaves. */
e622f2f4 2889 set_datagram_seg(wqe, ud_wr(wr));
1ffeb2eb
JM		 2890 /* set the forced-loopback bit in the data seg av */
2891 *(__be32 *) wqe |= cpu_to_be32(0x80000000);
2892 wqe += sizeof (struct mlx4_wqe_datagram_seg);
2893 size += sizeof (struct mlx4_wqe_datagram_seg) / 16;
2894 break;
2895 case MLX4_IB_QPT_UD:
e622f2f4 2896 set_datagram_seg(wqe, ud_wr(wr));
225c7b1f
RD		 2897 wqe += sizeof (struct mlx4_wqe_datagram_seg);
2898 size += sizeof (struct mlx4_wqe_datagram_seg) / 16;
b832be1e
EC		 2899
2900 if (wr->opcode == IB_WR_LSO) {
e622f2f4
CH		 2901 err = build_lso_seg(wqe, ud_wr(wr), qp, &seglen,
2902 &lso_hdr_sz, &blh);
b832be1e
EC		 2903 if (unlikely(err)) {
2904 *bad_wr = wr;
2905 goto out;
2906 }
0fd7e1d8 2907 lso_wqe = (__be32 *) wqe;
b832be1e
EC		 2908 wqe += seglen;
2909 size += seglen / 16;
2910 }
225c7b1f
RD		 2911 break;
2912
1ffeb2eb 2913 case MLX4_IB_QPT_PROXY_SMI_OWNER:
e622f2f4
CH		 2914 err = build_sriov_qp0_header(to_msqp(qp), ud_wr(wr),
2915 ctrl, &seglen);
1ffeb2eb
JM		 2916 if (unlikely(err)) {
2917 *bad_wr = wr;
2918 goto out;
2919 }
2920 wqe += seglen;
2921 size += seglen / 16;
2922 /* to start tunnel header on a cache-line boundary */
2923 add_zero_len_inline(wqe);
2924 wqe += 16;
2925 size++;
e622f2f4 2926 build_tunnel_header(ud_wr(wr), wqe, &seglen);
1ffeb2eb
JM		 2927 wqe += seglen;
2928 size += seglen / 16;
2929 break;
2930 case MLX4_IB_QPT_PROXY_SMI:
1ffeb2eb
JM		 2931 case MLX4_IB_QPT_PROXY_GSI:
2932 /* If we are tunneling special qps, this is a UD qp.
2933 * In this case we first add a UD segment targeting
2934 * the tunnel qp, and then add a header with address
2935 * information */
e622f2f4
CH		 2936 set_tunnel_datagram_seg(to_mdev(ibqp->device), wqe,
2937 ud_wr(wr),
97982f5a 2938 qp->mlx4_ib_qp_type);
1ffeb2eb
JM		 2939 wqe += sizeof (struct mlx4_wqe_datagram_seg);
2940 size += sizeof (struct mlx4_wqe_datagram_seg) / 16;
e622f2f4 2941 build_tunnel_header(ud_wr(wr), wqe, &seglen);
1ffeb2eb
JM		 2942 wqe += seglen;
2943 size += seglen / 16;
2944 break;
2945
2946 case MLX4_IB_QPT_SMI:
2947 case MLX4_IB_QPT_GSI:
e622f2f4
CH		 2948 err = build_mlx_header(to_msqp(qp), ud_wr(wr), ctrl,
2949 &seglen);
f438000f 2950 if (unlikely(err)) {
225c7b1f
RD		 2951 *bad_wr = wr;
2952 goto out;
2953 }
f438000f
RD		 2954 wqe += seglen;
2955 size += seglen / 16;
225c7b1f
RD		 2956 break;
2957
2958 default:
2959 break;
2960 }
2961
6e694ea3
JM		 2962 /*
2963 * Write data segments in reverse order, so as to
2964 * overwrite cacheline stamp last within each
2965 * cacheline. This avoids issues with WQE
2966 * prefetching.
2967 */
225c7b1f 2968
6e694ea3
JM		 2969 dseg = wqe;
2970 dseg += wr->num_sge - 1;
2971 size += wr->num_sge * (sizeof (struct mlx4_wqe_data_seg) / 16);
225c7b1f
RD		 2972
2973 /* Add one more inline data segment for ICRC for MLX sends */
1ffeb2eb
JM		 2974 if (unlikely(qp->mlx4_ib_qp_type == MLX4_IB_QPT_SMI ||
2975 qp->mlx4_ib_qp_type == MLX4_IB_QPT_GSI ||
2976 qp->mlx4_ib_qp_type &
2977 (MLX4_IB_QPT_PROXY_SMI_OWNER | MLX4_IB_QPT_TUN_SMI_OWNER))) {
6e694ea3 2978 set_mlx_icrc_seg(dseg + 1);
225c7b1f
RD		 2979 size += sizeof (struct mlx4_wqe_data_seg) / 16;
2980 }
2981
6e694ea3
JM		 2982 for (i = wr->num_sge - 1; i >= 0; --i, --dseg)
2983 set_data_seg(dseg, wr->sg_list + i);
2984
0fd7e1d8
RD		 2985 /*
2986 * Possibly overwrite stamping in cacheline with LSO
2987 * segment only after making sure all data segments
2988 * are written.
2989 */
2990 wmb();
2991 *lso_wqe = lso_hdr_sz;
2992
225c7b1f
RD		 2993 ctrl->fence_size = (wr->send_flags & IB_SEND_FENCE ?
2994 MLX4_WQE_CTRL_FENCE : 0) | size;
2995
2996 /*
2997 * Make sure descriptor is fully written before
2998 * setting ownership bit (because HW can start
2999 * executing as soon as we do).
3000 */
3001 wmb();
3002
59b0ed12 3003 if (wr->opcode < 0 || wr->opcode >= ARRAY_SIZE(mlx4_ib_opcode)) {
4ba6b8ea 3004 *bad_wr = wr;
225c7b1f
RD		 3005 err = -EINVAL;
3006 goto out;
3007 }
3008
3009 ctrl->owner_opcode = mlx4_ib_opcode[wr->opcode] |
417608c2 3010 (ind & qp->sq.wqe_cnt ? cpu_to_be32(1 << 31) : 0) | blh;
0e6e7416 3011
ea54b10c
JM		 3012 stamp = ind + qp->sq_spare_wqes;
3013 ind += DIV_ROUND_UP(size * 16, 1U << qp->sq.wqe_shift);
3014
0e6e7416
RD		 3015 /*
3016 * We can improve latency by not stamping the last
3017 * send queue WQE until after ringing the doorbell, so
3018 * only stamp here if there are still more WQEs to post.
ea54b10c
JM		 3019 *
3020 * Same optimization applies to padding with NOP wqe
3021 * in case of WQE shrinking (used to prevent wrap-around
3022 * in the middle of WR).
0e6e7416 3023 */
ea54b10c
JM		 3024 if (wr->next) {
3025 stamp_send_wqe(qp, stamp, size * 16);
3026 ind = pad_wraparound(qp, ind);
3027 }
225c7b1f
RD		 3028 }
3029
3030out:
3031 if (likely(nreq)) {
3032 qp->sq.head += nreq;
3033
3034 /*
3035 * Make sure that descriptors are written before
3036 * doorbell record.
3037 */
3038 wmb();
3039
3040 writel(qp->doorbell_qpn,
3041 to_mdev(ibqp->device)->uar_map + MLX4_SEND_DOORBELL);
3042
3043 /*
3044 * Make sure doorbells don't leak out of SQ spinlock
3045 * and reach the HCA out of order.
3046 */
3047 mmiowb();
0e6e7416 3048
ea54b10c
JM		 3049 stamp_send_wqe(qp, stamp, size * 16);
3050
3051 ind = pad_wraparound(qp, ind);
3052 qp->sq_next_wqe = ind;
225c7b1f
RD		 3053 }
3054
96db0e03 3055 spin_unlock_irqrestore(&qp->sq.lock, flags);
225c7b1f
RD		 3056
3057 return err;
3058}
3059
3060int mlx4_ib_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *wr,
3061 struct ib_recv_wr **bad_wr)
3062{
3063 struct mlx4_ib_qp *qp = to_mqp(ibqp);
3064 struct mlx4_wqe_data_seg *scat;
3065 unsigned long flags;
3066 int err = 0;
3067 int nreq;
3068 int ind;
1ffeb2eb 3069 int max_gs;
225c7b1f 3070 int i;
35f05dab 3071 struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
225c7b1f 3072
1ffeb2eb 3073 max_gs = qp->rq.max_gs;
225c7b1f
RD		 3074 spin_lock_irqsave(&qp->rq.lock, flags);
3075
35f05dab
YH		 3076 if (mdev->dev->persist->state & MLX4_DEVICE_STATE_INTERNAL_ERROR) {
3077 err = -EIO;
3078 *bad_wr = wr;
3079 nreq = 0;
3080 goto out;
3081 }
3082
0e6e7416 3083 ind = qp->rq.head & (qp->rq.wqe_cnt - 1);
225c7b1f
RD		 3084
3085 for (nreq = 0; wr; ++nreq, wr = wr->next) {
2b946077 3086 if (mlx4_wq_overflow(&qp->rq, nreq, qp->ibqp.recv_cq)) {
225c7b1f
RD		 3087 err = -ENOMEM;
3088 *bad_wr = wr;
3089 goto out;
3090 }
3091
3092 if (unlikely(wr->num_sge > qp->rq.max_gs)) {
3093 err = -EINVAL;
3094 *bad_wr = wr;
3095 goto out;
3096 }
3097
3098 scat = get_recv_wqe(qp, ind);
3099
1ffeb2eb
JM		 3100 if (qp->mlx4_ib_qp_type & (MLX4_IB_QPT_PROXY_SMI_OWNER |
3101 MLX4_IB_QPT_PROXY_SMI | MLX4_IB_QPT_PROXY_GSI)) {
3102 ib_dma_sync_single_for_device(ibqp->device,
3103 qp->sqp_proxy_rcv[ind].map,
3104 sizeof (struct mlx4_ib_proxy_sqp_hdr),
3105 DMA_FROM_DEVICE);
3106 scat->byte_count =
3107 cpu_to_be32(sizeof (struct mlx4_ib_proxy_sqp_hdr));
3108 /* use dma lkey from upper layer entry */
3109 scat->lkey = cpu_to_be32(wr->sg_list->lkey);
3110 scat->addr = cpu_to_be64(qp->sqp_proxy_rcv[ind].map);
3111 scat++;
3112 max_gs--;
3113 }
3114
2242fa4f
RD		 3115 for (i = 0; i < wr->num_sge; ++i)
3116 __set_data_seg(scat + i, wr->sg_list + i);
225c7b1f 3117
1ffeb2eb 3118 if (i < max_gs) {
225c7b1f
RD		 3119 scat[i].byte_count = 0;
3120 scat[i].lkey = cpu_to_be32(MLX4_INVALID_LKEY);
3121 scat[i].addr = 0;
3122 }
3123
3124 qp->rq.wrid[ind] = wr->wr_id;
3125
0e6e7416 3126 ind = (ind + 1) & (qp->rq.wqe_cnt - 1);
225c7b1f
RD		 3127 }
3128
3129out:
3130 if (likely(nreq)) {
3131 qp->rq.head += nreq;
3132
3133 /*
3134 * Make sure that descriptors are written before
3135 * doorbell record.
3136 */
3137 wmb();
3138
3139 *qp->db.db = cpu_to_be32(qp->rq.head & 0xffff);
3140 }
3141
3142 spin_unlock_irqrestore(&qp->rq.lock, flags);
3143
3144 return err;
3145}
6a775e2b
JM		 3146
3147static inline enum ib_qp_state to_ib_qp_state(enum mlx4_qp_state mlx4_state)
3148{
3149 switch (mlx4_state) {
3150 case MLX4_QP_STATE_RST: return IB_QPS_RESET;
3151 case MLX4_QP_STATE_INIT: return IB_QPS_INIT;
3152 case MLX4_QP_STATE_RTR: return IB_QPS_RTR;
3153 case MLX4_QP_STATE_RTS: return IB_QPS_RTS;
3154 case MLX4_QP_STATE_SQ_DRAINING:
3155 case MLX4_QP_STATE_SQD: return IB_QPS_SQD;
3156 case MLX4_QP_STATE_SQER: return IB_QPS_SQE;
3157 case MLX4_QP_STATE_ERR: return IB_QPS_ERR;
3158 default: return -1;
3159 }
3160}
3161
3162static inline enum ib_mig_state to_ib_mig_state(int mlx4_mig_state)
3163{
3164 switch (mlx4_mig_state) {
3165 case MLX4_QP_PM_ARMED: return IB_MIG_ARMED;
3166 case MLX4_QP_PM_REARM: return IB_MIG_REARM;
3167 case MLX4_QP_PM_MIGRATED: return IB_MIG_MIGRATED;
3168 default: return -1;
3169 }
3170}
3171
3172static int to_ib_qp_access_flags(int mlx4_flags)
3173{
3174 int ib_flags = 0;
3175
3176 if (mlx4_flags & MLX4_QP_BIT_RRE)
3177 ib_flags |= IB_ACCESS_REMOTE_READ;
3178 if (mlx4_flags & MLX4_QP_BIT_RWE)
3179 ib_flags |= IB_ACCESS_REMOTE_WRITE;
3180 if (mlx4_flags & MLX4_QP_BIT_RAE)
3181 ib_flags |= IB_ACCESS_REMOTE_ATOMIC;
3182
3183 return ib_flags;
3184}
3185
4c3eb3ca 3186static void to_ib_ah_attr(struct mlx4_ib_dev *ibdev, struct ib_ah_attr *ib_ah_attr,
6a775e2b
JM		 3187 struct mlx4_qp_path *path)
3188{
4c3eb3ca
EC		 3189 struct mlx4_dev *dev = ibdev->dev;
3190 int is_eth;
3191
8fcea95a 3192 memset(ib_ah_attr, 0, sizeof *ib_ah_attr);
6a775e2b
JM		 3193 ib_ah_attr->port_num = path->sched_queue & 0x40 ? 2 : 1;
3194
3195 if (ib_ah_attr->port_num == 0 || ib_ah_attr->port_num > dev->caps.num_ports)
3196 return;
3197
4c3eb3ca
EC		 3198 is_eth = rdma_port_get_link_layer(&ibdev->ib_dev, ib_ah_attr->port_num) ==
3199 IB_LINK_LAYER_ETHERNET;
3200 if (is_eth)
3201 ib_ah_attr->sl = ((path->sched_queue >> 3) & 0x7) |
3202 ((path->sched_queue & 4) << 1);
3203 else
3204 ib_ah_attr->sl = (path->sched_queue >> 2) & 0xf;
3205
6a775e2b 3206 ib_ah_attr->dlid = be16_to_cpu(path->rlid);
6a775e2b
JM		 3207 ib_ah_attr->src_path_bits = path->grh_mylmc & 0x7f;
3208 ib_ah_attr->static_rate = path->static_rate ? path->static_rate - 5 : 0;
3209 ib_ah_attr->ah_flags = (path->grh_mylmc & (1 << 7)) ? IB_AH_GRH : 0;
3210 if (ib_ah_attr->ah_flags) {
3211 ib_ah_attr->grh.sgid_index = path->mgid_index;
3212 ib_ah_attr->grh.hop_limit = path->hop_limit;
3213 ib_ah_attr->grh.traffic_class =
3214 (be32_to_cpu(path->tclass_flowlabel) >> 20) & 0xff;
3215 ib_ah_attr->grh.flow_label =
586bb586 3216 be32_to_cpu(path->tclass_flowlabel) & 0xfffff;
6a775e2b
JM		 3217 memcpy(ib_ah_attr->grh.dgid.raw,
3218 path->rgid, sizeof ib_ah_attr->grh.dgid.raw);
3219 }
3220}
3221
3222int mlx4_ib_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr, int qp_attr_mask,
3223 struct ib_qp_init_attr *qp_init_attr)
3224{
3225 struct mlx4_ib_dev *dev = to_mdev(ibqp->device);
3226 struct mlx4_ib_qp *qp = to_mqp(ibqp);
3227 struct mlx4_qp_context context;
3228 int mlx4_state;
0df67030
DB		 3229 int err = 0;
3230
3231 mutex_lock(&qp->mutex);
6a775e2b
JM		 3232
3233 if (qp->state == IB_QPS_RESET) {
3234 qp_attr->qp_state = IB_QPS_RESET;
3235 goto done;
3236 }
3237
3238 err = mlx4_qp_query(dev->dev, &qp->mqp, &context);
0df67030
DB		 3239 if (err) {
3240 err = -EINVAL;
3241 goto out;
3242 }
6a775e2b
JM		 3243
3244 mlx4_state = be32_to_cpu(context.flags) >> 28;
3245
0df67030
DB		 3246 qp->state = to_ib_qp_state(mlx4_state);
3247 qp_attr->qp_state = qp->state;
6a775e2b
JM		 3248 qp_attr->path_mtu = context.mtu_msgmax >> 5;
3249 qp_attr->path_mig_state =
3250 to_ib_mig_state((be32_to_cpu(context.flags) >> 11) & 0x3);
3251 qp_attr->qkey = be32_to_cpu(context.qkey);
3252 qp_attr->rq_psn = be32_to_cpu(context.rnr_nextrecvpsn) & 0xffffff;
3253 qp_attr->sq_psn = be32_to_cpu(context.next_send_psn) & 0xffffff;
3254 qp_attr->dest_qp_num = be32_to_cpu(context.remote_qpn) & 0xffffff;
3255 qp_attr->qp_access_flags =
3256 to_ib_qp_access_flags(be32_to_cpu(context.params2));
3257
3258 if (qp->ibqp.qp_type == IB_QPT_RC || qp->ibqp.qp_type == IB_QPT_UC) {
4c3eb3ca
EC		 3259 to_ib_ah_attr(dev, &qp_attr->ah_attr, &context.pri_path);
3260 to_ib_ah_attr(dev, &qp_attr->alt_ah_attr, &context.alt_path);
6a775e2b
JM		 3261 qp_attr->alt_pkey_index = context.alt_path.pkey_index & 0x7f;
3262 qp_attr->alt_port_num = qp_attr->alt_ah_attr.port_num;
3263 }
3264
3265 qp_attr->pkey_index = context.pri_path.pkey_index & 0x7f;
1c27cb71
JM		 3266 if (qp_attr->qp_state == IB_QPS_INIT)
3267 qp_attr->port_num = qp->port;
3268 else
3269 qp_attr->port_num = context.pri_path.sched_queue & 0x40 ? 2 : 1;
6a775e2b
JM		 3270
3271 /* qp_attr->en_sqd_async_notify is only applicable in modify qp */
3272 qp_attr->sq_draining = mlx4_state == MLX4_QP_STATE_SQ_DRAINING;
3273
3274 qp_attr->max_rd_atomic = 1 << ((be32_to_cpu(context.params1) >> 21) & 0x7);
3275
3276 qp_attr->max_dest_rd_atomic =
3277 1 << ((be32_to_cpu(context.params2) >> 21) & 0x7);
3278 qp_attr->min_rnr_timer =
3279 (be32_to_cpu(context.rnr_nextrecvpsn) >> 24) & 0x1f;
3280 qp_attr->timeout = context.pri_path.ackto >> 3;
3281 qp_attr->retry_cnt = (be32_to_cpu(context.params1) >> 16) & 0x7;
3282 qp_attr->rnr_retry = (be32_to_cpu(context.params1) >> 13) & 0x7;
3283 qp_attr->alt_timeout = context.alt_path.ackto >> 3;
3284
3285done:
3286 qp_attr->cur_qp_state = qp_attr->qp_state;
7f5eb9bb
RD		 3287 qp_attr->cap.max_recv_wr = qp->rq.wqe_cnt;
3288 qp_attr->cap.max_recv_sge = qp->rq.max_gs;
3289
6a775e2b 3290 if (!ibqp->uobject) {
7f5eb9bb
RD		 3291 qp_attr->cap.max_send_wr = qp->sq.wqe_cnt;
3292 qp_attr->cap.max_send_sge = qp->sq.max_gs;
3293 } else {
3294 qp_attr->cap.max_send_wr = 0;
3295 qp_attr->cap.max_send_sge = 0;
6a775e2b
JM		 3296 }
3297
7f5eb9bb
RD		 3298 /*
3299 * We don't support inline sends for kernel QPs (yet), and we
3300 * don't know what userspace's value should be.
3301 */
3302 qp_attr->cap.max_inline_data = 0;
3303
3304 qp_init_attr->cap = qp_attr->cap;
3305
521e575b
RL		 3306 qp_init_attr->create_flags = 0;
3307 if (qp->flags & MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK)
3308 qp_init_attr->create_flags |= IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK;
3309
3310 if (qp->flags & MLX4_IB_QP_LSO)
3311 qp_init_attr->create_flags |= IB_QP_CREATE_IPOIB_UD_LSO;
3312
c1c98501
MB		 3313 if (qp->flags & MLX4_IB_QP_NETIF)
3314 qp_init_attr->create_flags |= IB_QP_CREATE_NETIF_QP;
3315
46db567d
DB		 3316 qp_init_attr->sq_sig_type =
3317 qp->sq_signal_bits == cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE) ?
3318 IB_SIGNAL_ALL_WR : IB_SIGNAL_REQ_WR;
3319
0df67030
DB		 3320out:
3321 mutex_unlock(&qp->mutex);
3322 return err;
6a775e2b
JM		 3323}
3324
Linux 6.x block layer and io_uring tree(s)