2 * Copyright (c) 2007 Cisco Systems, Inc. All rights reserved.
3 * Copyright (c) 2007, 2008 Mellanox Technologies. All rights reserved.
5 * This software is available to you under a choice of one of two
6 * licenses. You may choose to be licensed under the terms of the GNU
7 * General Public License (GPL) Version 2, available from the file
8 * COPYING in the main directory of this source tree, or the
9 * OpenIB.org BSD license below:
11 * Redistribution and use in source and binary forms, with or
12 * without modification, are permitted provided that the following
15 * - Redistributions of source code must retain the above
16 * copyright notice, this list of conditions and the following
19 * - Redistributions in binary form must reproduce the above
20 * copyright notice, this list of conditions and the following
21 * disclaimer in the documentation and/or other materials
22 * provided with the distribution.
24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
28 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
29 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
34 #include <linux/log2.h>
35 #include <linux/etherdevice.h>
37 #include <linux/slab.h>
38 #include <linux/netdevice.h>
39 #include <linux/vmalloc.h>
41 #include <rdma/ib_cache.h>
42 #include <rdma/ib_pack.h>
43 #include <rdma/ib_addr.h>
44 #include <rdma/ib_mad.h>
46 #include <linux/mlx4/driver.h>
47 #include <linux/mlx4/qp.h>
50 #include <rdma/mlx4-abi.h>
52 static void mlx4_ib_lock_cqs(struct mlx4_ib_cq
*send_cq
,
53 struct mlx4_ib_cq
*recv_cq
);
54 static void mlx4_ib_unlock_cqs(struct mlx4_ib_cq
*send_cq
,
55 struct mlx4_ib_cq
*recv_cq
);
58 MLX4_IB_ACK_REQ_FREQ
= 8,
62 MLX4_IB_DEFAULT_SCHED_QUEUE
= 0x83,
63 MLX4_IB_DEFAULT_QP0_SCHED_QUEUE
= 0x3f,
64 MLX4_IB_LINK_TYPE_IB
= 0,
65 MLX4_IB_LINK_TYPE_ETH
= 1
70 * Largest possible UD header: send with GRH and immediate
71 * data plus 18 bytes for an Ethernet header with VLAN/802.1Q
72 * tag. (LRH would only use 8 bytes, so Ethernet is the
75 MLX4_IB_UD_HEADER_SIZE
= 82,
76 MLX4_IB_LSO_HEADER_SPARE
= 128,
80 MLX4_IB_IBOE_ETHERTYPE
= 0x8915
88 struct ib_ud_header ud_header
;
89 u8 header_buf
[MLX4_IB_UD_HEADER_SIZE
];
90 struct ib_qp
*roce_v2_gsi
;
94 MLX4_IB_MIN_SQ_STRIDE
= 6,
95 MLX4_IB_CACHE_LINE_SIZE
= 64,
100 MLX4_RAW_QP_MSGMAX
= 31,
107 static const __be32 mlx4_ib_opcode
[] = {
108 [IB_WR_SEND
] = cpu_to_be32(MLX4_OPCODE_SEND
),
109 [IB_WR_LSO
] = cpu_to_be32(MLX4_OPCODE_LSO
),
110 [IB_WR_SEND_WITH_IMM
] = cpu_to_be32(MLX4_OPCODE_SEND_IMM
),
111 [IB_WR_RDMA_WRITE
] = cpu_to_be32(MLX4_OPCODE_RDMA_WRITE
),
112 [IB_WR_RDMA_WRITE_WITH_IMM
] = cpu_to_be32(MLX4_OPCODE_RDMA_WRITE_IMM
),
113 [IB_WR_RDMA_READ
] = cpu_to_be32(MLX4_OPCODE_RDMA_READ
),
114 [IB_WR_ATOMIC_CMP_AND_SWP
] = cpu_to_be32(MLX4_OPCODE_ATOMIC_CS
),
115 [IB_WR_ATOMIC_FETCH_AND_ADD
] = cpu_to_be32(MLX4_OPCODE_ATOMIC_FA
),
116 [IB_WR_SEND_WITH_INV
] = cpu_to_be32(MLX4_OPCODE_SEND_INVAL
),
117 [IB_WR_LOCAL_INV
] = cpu_to_be32(MLX4_OPCODE_LOCAL_INVAL
),
118 [IB_WR_REG_MR
] = cpu_to_be32(MLX4_OPCODE_FMR
),
119 [IB_WR_MASKED_ATOMIC_CMP_AND_SWP
] = cpu_to_be32(MLX4_OPCODE_MASKED_ATOMIC_CS
),
120 [IB_WR_MASKED_ATOMIC_FETCH_AND_ADD
] = cpu_to_be32(MLX4_OPCODE_MASKED_ATOMIC_FA
),
123 static struct mlx4_ib_sqp
*to_msqp(struct mlx4_ib_qp
*mqp
)
125 return container_of(mqp
, struct mlx4_ib_sqp
, qp
);
128 static int is_tunnel_qp(struct mlx4_ib_dev
*dev
, struct mlx4_ib_qp
*qp
)
130 if (!mlx4_is_master(dev
->dev
))
133 return qp
->mqp
.qpn
>= dev
->dev
->phys_caps
.base_tunnel_sqpn
&&
134 qp
->mqp
.qpn
< dev
->dev
->phys_caps
.base_tunnel_sqpn
+
138 static int is_sqp(struct mlx4_ib_dev
*dev
, struct mlx4_ib_qp
*qp
)
143 /* PPF or Native -- real SQP */
144 real_sqp
= ((mlx4_is_master(dev
->dev
) || !mlx4_is_mfunc(dev
->dev
)) &&
145 qp
->mqp
.qpn
>= dev
->dev
->phys_caps
.base_sqpn
&&
146 qp
->mqp
.qpn
<= dev
->dev
->phys_caps
.base_sqpn
+ 3);
149 /* VF or PF -- proxy SQP */
150 if (mlx4_is_mfunc(dev
->dev
)) {
151 for (i
= 0; i
< dev
->dev
->caps
.num_ports
; i
++) {
152 if (qp
->mqp
.qpn
== dev
->dev
->caps
.qp0_proxy
[i
] ||
153 qp
->mqp
.qpn
== dev
->dev
->caps
.qp1_proxy
[i
]) {
162 return !!(qp
->flags
& MLX4_IB_ROCE_V2_GSI_QP
);
165 /* used for INIT/CLOSE port logic */
166 static int is_qp0(struct mlx4_ib_dev
*dev
, struct mlx4_ib_qp
*qp
)
171 /* PPF or Native -- real QP0 */
172 real_qp0
= ((mlx4_is_master(dev
->dev
) || !mlx4_is_mfunc(dev
->dev
)) &&
173 qp
->mqp
.qpn
>= dev
->dev
->phys_caps
.base_sqpn
&&
174 qp
->mqp
.qpn
<= dev
->dev
->phys_caps
.base_sqpn
+ 1);
177 /* VF or PF -- proxy QP0 */
178 if (mlx4_is_mfunc(dev
->dev
)) {
179 for (i
= 0; i
< dev
->dev
->caps
.num_ports
; i
++) {
180 if (qp
->mqp
.qpn
== dev
->dev
->caps
.qp0_proxy
[i
]) {
189 static void *get_wqe(struct mlx4_ib_qp
*qp
, int offset
)
191 return mlx4_buf_offset(&qp
->buf
, offset
);
194 static void *get_recv_wqe(struct mlx4_ib_qp
*qp
, int n
)
196 return get_wqe(qp
, qp
->rq
.offset
+ (n
<< qp
->rq
.wqe_shift
));
199 static void *get_send_wqe(struct mlx4_ib_qp
*qp
, int n
)
201 return get_wqe(qp
, qp
->sq
.offset
+ (n
<< qp
->sq
.wqe_shift
));
205 * Stamp a SQ WQE so that it is invalid if prefetched by marking the
206 * first four bytes of every 64 byte chunk with
207 * 0x7FFFFFF | (invalid_ownership_value << 31).
209 * When the max work request size is less than or equal to the WQE
210 * basic block size, as an optimization, we can stamp all WQEs with
211 * 0xffffffff, and skip the very first chunk of each WQE.
213 static void stamp_send_wqe(struct mlx4_ib_qp
*qp
, int n
, int size
)
221 struct mlx4_wqe_ctrl_seg
*ctrl
;
223 if (qp
->sq_max_wqes_per_wr
> 1) {
224 s
= roundup(size
, 1U << qp
->sq
.wqe_shift
);
225 for (i
= 0; i
< s
; i
+= 64) {
226 ind
= (i
>> qp
->sq
.wqe_shift
) + n
;
227 stamp
= ind
& qp
->sq
.wqe_cnt
? cpu_to_be32(0x7fffffff) :
228 cpu_to_be32(0xffffffff);
229 buf
= get_send_wqe(qp
, ind
& (qp
->sq
.wqe_cnt
- 1));
230 wqe
= buf
+ (i
& ((1 << qp
->sq
.wqe_shift
) - 1));
234 ctrl
= buf
= get_send_wqe(qp
, n
& (qp
->sq
.wqe_cnt
- 1));
235 s
= (ctrl
->qpn_vlan
.fence_size
& 0x3f) << 4;
236 for (i
= 64; i
< s
; i
+= 64) {
238 *wqe
= cpu_to_be32(0xffffffff);
243 static void post_nop_wqe(struct mlx4_ib_qp
*qp
, int n
, int size
)
245 struct mlx4_wqe_ctrl_seg
*ctrl
;
246 struct mlx4_wqe_inline_seg
*inl
;
250 ctrl
= wqe
= get_send_wqe(qp
, n
& (qp
->sq
.wqe_cnt
- 1));
251 s
= sizeof(struct mlx4_wqe_ctrl_seg
);
253 if (qp
->ibqp
.qp_type
== IB_QPT_UD
) {
254 struct mlx4_wqe_datagram_seg
*dgram
= wqe
+ sizeof *ctrl
;
255 struct mlx4_av
*av
= (struct mlx4_av
*)dgram
->av
;
256 memset(dgram
, 0, sizeof *dgram
);
257 av
->port_pd
= cpu_to_be32((qp
->port
<< 24) | to_mpd(qp
->ibqp
.pd
)->pdn
);
258 s
+= sizeof(struct mlx4_wqe_datagram_seg
);
261 /* Pad the remainder of the WQE with an inline data segment. */
264 inl
->byte_count
= cpu_to_be32(1 << 31 | (size
- s
- sizeof *inl
));
266 ctrl
->srcrb_flags
= 0;
267 ctrl
->qpn_vlan
.fence_size
= size
/ 16;
269 * Make sure descriptor is fully written before setting ownership bit
270 * (because HW can start executing as soon as we do).
274 ctrl
->owner_opcode
= cpu_to_be32(MLX4_OPCODE_NOP
| MLX4_WQE_CTRL_NEC
) |
275 (n
& qp
->sq
.wqe_cnt
? cpu_to_be32(1 << 31) : 0);
277 stamp_send_wqe(qp
, n
+ qp
->sq_spare_wqes
, size
);
280 /* Post NOP WQE to prevent wrap-around in the middle of WR */
281 static inline unsigned pad_wraparound(struct mlx4_ib_qp
*qp
, int ind
)
283 unsigned s
= qp
->sq
.wqe_cnt
- (ind
& (qp
->sq
.wqe_cnt
- 1));
284 if (unlikely(s
< qp
->sq_max_wqes_per_wr
)) {
285 post_nop_wqe(qp
, ind
, s
<< qp
->sq
.wqe_shift
);
291 static void mlx4_ib_qp_event(struct mlx4_qp
*qp
, enum mlx4_event type
)
293 struct ib_event event
;
294 struct ib_qp
*ibqp
= &to_mibqp(qp
)->ibqp
;
296 if (type
== MLX4_EVENT_TYPE_PATH_MIG
)
297 to_mibqp(qp
)->port
= to_mibqp(qp
)->alt_port
;
299 if (ibqp
->event_handler
) {
300 event
.device
= ibqp
->device
;
301 event
.element
.qp
= ibqp
;
303 case MLX4_EVENT_TYPE_PATH_MIG
:
304 event
.event
= IB_EVENT_PATH_MIG
;
306 case MLX4_EVENT_TYPE_COMM_EST
:
307 event
.event
= IB_EVENT_COMM_EST
;
309 case MLX4_EVENT_TYPE_SQ_DRAINED
:
310 event
.event
= IB_EVENT_SQ_DRAINED
;
312 case MLX4_EVENT_TYPE_SRQ_QP_LAST_WQE
:
313 event
.event
= IB_EVENT_QP_LAST_WQE_REACHED
;
315 case MLX4_EVENT_TYPE_WQ_CATAS_ERROR
:
316 event
.event
= IB_EVENT_QP_FATAL
;
318 case MLX4_EVENT_TYPE_PATH_MIG_FAILED
:
319 event
.event
= IB_EVENT_PATH_MIG_ERR
;
321 case MLX4_EVENT_TYPE_WQ_INVAL_REQ_ERROR
:
322 event
.event
= IB_EVENT_QP_REQ_ERR
;
324 case MLX4_EVENT_TYPE_WQ_ACCESS_ERROR
:
325 event
.event
= IB_EVENT_QP_ACCESS_ERR
;
328 pr_warn("Unexpected event type %d "
329 "on QP %06x\n", type
, qp
->qpn
);
333 ibqp
->event_handler(&event
, ibqp
->qp_context
);
337 static int send_wqe_overhead(enum mlx4_ib_qp_type type
, u32 flags
)
340 * UD WQEs must have a datagram segment.
341 * RC and UC WQEs might have a remote address segment.
342 * MLX WQEs need two extra inline data segments (for the UD
343 * header and space for the ICRC).
347 return sizeof (struct mlx4_wqe_ctrl_seg
) +
348 sizeof (struct mlx4_wqe_datagram_seg
) +
349 ((flags
& MLX4_IB_QP_LSO
) ? MLX4_IB_LSO_HEADER_SPARE
: 0);
350 case MLX4_IB_QPT_PROXY_SMI_OWNER
:
351 case MLX4_IB_QPT_PROXY_SMI
:
352 case MLX4_IB_QPT_PROXY_GSI
:
353 return sizeof (struct mlx4_wqe_ctrl_seg
) +
354 sizeof (struct mlx4_wqe_datagram_seg
) + 64;
355 case MLX4_IB_QPT_TUN_SMI_OWNER
:
356 case MLX4_IB_QPT_TUN_GSI
:
357 return sizeof (struct mlx4_wqe_ctrl_seg
) +
358 sizeof (struct mlx4_wqe_datagram_seg
);
361 return sizeof (struct mlx4_wqe_ctrl_seg
) +
362 sizeof (struct mlx4_wqe_raddr_seg
);
364 return sizeof (struct mlx4_wqe_ctrl_seg
) +
365 sizeof (struct mlx4_wqe_masked_atomic_seg
) +
366 sizeof (struct mlx4_wqe_raddr_seg
);
367 case MLX4_IB_QPT_SMI
:
368 case MLX4_IB_QPT_GSI
:
369 return sizeof (struct mlx4_wqe_ctrl_seg
) +
370 ALIGN(MLX4_IB_UD_HEADER_SIZE
+
371 DIV_ROUND_UP(MLX4_IB_UD_HEADER_SIZE
,
373 sizeof (struct mlx4_wqe_inline_seg
),
374 sizeof (struct mlx4_wqe_data_seg
)) +
376 sizeof (struct mlx4_wqe_inline_seg
),
377 sizeof (struct mlx4_wqe_data_seg
));
379 return sizeof (struct mlx4_wqe_ctrl_seg
);
383 static int set_rq_size(struct mlx4_ib_dev
*dev
, struct ib_qp_cap
*cap
,
384 int is_user
, int has_rq
, struct mlx4_ib_qp
*qp
)
386 /* Sanity check RQ size before proceeding */
387 if (cap
->max_recv_wr
> dev
->dev
->caps
.max_wqes
- MLX4_IB_SQ_MAX_SPARE
||
388 cap
->max_recv_sge
> min(dev
->dev
->caps
.max_sq_sg
, dev
->dev
->caps
.max_rq_sg
))
392 if (cap
->max_recv_wr
)
395 qp
->rq
.wqe_cnt
= qp
->rq
.max_gs
= 0;
397 /* HW requires >= 1 RQ entry with >= 1 gather entry */
398 if (is_user
&& (!cap
->max_recv_wr
|| !cap
->max_recv_sge
))
401 qp
->rq
.wqe_cnt
= roundup_pow_of_two(max(1U, cap
->max_recv_wr
));
402 qp
->rq
.max_gs
= roundup_pow_of_two(max(1U, cap
->max_recv_sge
));
403 qp
->rq
.wqe_shift
= ilog2(qp
->rq
.max_gs
* sizeof (struct mlx4_wqe_data_seg
));
406 /* leave userspace return values as they were, so as not to break ABI */
408 cap
->max_recv_wr
= qp
->rq
.max_post
= qp
->rq
.wqe_cnt
;
409 cap
->max_recv_sge
= qp
->rq
.max_gs
;
411 cap
->max_recv_wr
= qp
->rq
.max_post
=
412 min(dev
->dev
->caps
.max_wqes
- MLX4_IB_SQ_MAX_SPARE
, qp
->rq
.wqe_cnt
);
413 cap
->max_recv_sge
= min(qp
->rq
.max_gs
,
414 min(dev
->dev
->caps
.max_sq_sg
,
415 dev
->dev
->caps
.max_rq_sg
));
421 static int set_kernel_sq_size(struct mlx4_ib_dev
*dev
, struct ib_qp_cap
*cap
,
422 enum mlx4_ib_qp_type type
, struct mlx4_ib_qp
*qp
,
427 /* Sanity check SQ size before proceeding */
428 if (cap
->max_send_wr
> (dev
->dev
->caps
.max_wqes
- MLX4_IB_SQ_MAX_SPARE
) ||
429 cap
->max_send_sge
> min(dev
->dev
->caps
.max_sq_sg
, dev
->dev
->caps
.max_rq_sg
) ||
430 cap
->max_inline_data
+ send_wqe_overhead(type
, qp
->flags
) +
431 sizeof (struct mlx4_wqe_inline_seg
) > dev
->dev
->caps
.max_sq_desc_sz
)
435 * For MLX transport we need 2 extra S/G entries:
436 * one for the header and one for the checksum at the end
438 if ((type
== MLX4_IB_QPT_SMI
|| type
== MLX4_IB_QPT_GSI
||
439 type
& (MLX4_IB_QPT_PROXY_SMI_OWNER
| MLX4_IB_QPT_TUN_SMI_OWNER
)) &&
440 cap
->max_send_sge
+ 2 > dev
->dev
->caps
.max_sq_sg
)
443 s
= max(cap
->max_send_sge
* sizeof (struct mlx4_wqe_data_seg
),
444 cap
->max_inline_data
+ sizeof (struct mlx4_wqe_inline_seg
)) +
445 send_wqe_overhead(type
, qp
->flags
);
447 if (s
> dev
->dev
->caps
.max_sq_desc_sz
)
451 * Hermon supports shrinking WQEs, such that a single work
452 * request can include multiple units of 1 << wqe_shift. This
453 * way, work requests can differ in size, and do not have to
454 * be a power of 2 in size, saving memory and speeding up send
455 * WR posting. Unfortunately, if we do this then the
456 * wqe_index field in CQEs can't be used to look up the WR ID
457 * anymore, so we do this only if selective signaling is off.
459 * Further, on 32-bit platforms, we can't use vmap() to make
460 * the QP buffer virtually contiguous. Thus we have to use
461 * constant-sized WRs to make sure a WR is always fully within
462 * a single page-sized chunk.
464 * Finally, we use NOP work requests to pad the end of the
465 * work queue, to avoid wrap-around in the middle of WR. We
466 * set NEC bit to avoid getting completions with error for
467 * these NOP WRs, but since NEC is only supported starting
468 * with firmware 2.2.232, we use constant-sized WRs for older
471 * And, since MLX QPs only support SEND, we use constant-sized
474 * We look for the smallest value of wqe_shift such that the
475 * resulting number of wqes does not exceed device
478 * We set WQE size to at least 64 bytes, this way stamping
479 * invalidates each WQE.
481 if (shrink_wqe
&& dev
->dev
->caps
.fw_ver
>= MLX4_FW_VER_WQE_CTRL_NEC
&&
482 qp
->sq_signal_bits
&& BITS_PER_LONG
== 64 &&
483 type
!= MLX4_IB_QPT_SMI
&& type
!= MLX4_IB_QPT_GSI
&&
484 !(type
& (MLX4_IB_QPT_PROXY_SMI_OWNER
| MLX4_IB_QPT_PROXY_SMI
|
485 MLX4_IB_QPT_PROXY_GSI
| MLX4_IB_QPT_TUN_SMI_OWNER
)))
486 qp
->sq
.wqe_shift
= ilog2(64);
488 qp
->sq
.wqe_shift
= ilog2(roundup_pow_of_two(s
));
491 qp
->sq_max_wqes_per_wr
= DIV_ROUND_UP(s
, 1U << qp
->sq
.wqe_shift
);
494 * We need to leave 2 KB + 1 WR of headroom in the SQ to
495 * allow HW to prefetch.
497 qp
->sq_spare_wqes
= (2048 >> qp
->sq
.wqe_shift
) + qp
->sq_max_wqes_per_wr
;
498 qp
->sq
.wqe_cnt
= roundup_pow_of_two(cap
->max_send_wr
*
499 qp
->sq_max_wqes_per_wr
+
502 if (qp
->sq
.wqe_cnt
<= dev
->dev
->caps
.max_wqes
)
505 if (qp
->sq_max_wqes_per_wr
<= 1)
511 qp
->sq
.max_gs
= (min(dev
->dev
->caps
.max_sq_desc_sz
,
512 (qp
->sq_max_wqes_per_wr
<< qp
->sq
.wqe_shift
)) -
513 send_wqe_overhead(type
, qp
->flags
)) /
514 sizeof (struct mlx4_wqe_data_seg
);
516 qp
->buf_size
= (qp
->rq
.wqe_cnt
<< qp
->rq
.wqe_shift
) +
517 (qp
->sq
.wqe_cnt
<< qp
->sq
.wqe_shift
);
518 if (qp
->rq
.wqe_shift
> qp
->sq
.wqe_shift
) {
520 qp
->sq
.offset
= qp
->rq
.wqe_cnt
<< qp
->rq
.wqe_shift
;
522 qp
->rq
.offset
= qp
->sq
.wqe_cnt
<< qp
->sq
.wqe_shift
;
526 cap
->max_send_wr
= qp
->sq
.max_post
=
527 (qp
->sq
.wqe_cnt
- qp
->sq_spare_wqes
) / qp
->sq_max_wqes_per_wr
;
528 cap
->max_send_sge
= min(qp
->sq
.max_gs
,
529 min(dev
->dev
->caps
.max_sq_sg
,
530 dev
->dev
->caps
.max_rq_sg
));
531 /* We don't support inline sends for kernel QPs (yet) */
532 cap
->max_inline_data
= 0;
537 static int set_user_sq_size(struct mlx4_ib_dev
*dev
,
538 struct mlx4_ib_qp
*qp
,
539 struct mlx4_ib_create_qp
*ucmd
)
541 /* Sanity check SQ size before proceeding */
542 if ((1 << ucmd
->log_sq_bb_count
) > dev
->dev
->caps
.max_wqes
||
543 ucmd
->log_sq_stride
>
544 ilog2(roundup_pow_of_two(dev
->dev
->caps
.max_sq_desc_sz
)) ||
545 ucmd
->log_sq_stride
< MLX4_IB_MIN_SQ_STRIDE
)
548 qp
->sq
.wqe_cnt
= 1 << ucmd
->log_sq_bb_count
;
549 qp
->sq
.wqe_shift
= ucmd
->log_sq_stride
;
551 qp
->buf_size
= (qp
->rq
.wqe_cnt
<< qp
->rq
.wqe_shift
) +
552 (qp
->sq
.wqe_cnt
<< qp
->sq
.wqe_shift
);
557 static int alloc_proxy_bufs(struct ib_device
*dev
, struct mlx4_ib_qp
*qp
)
562 kmalloc(sizeof (struct mlx4_ib_buf
) * qp
->rq
.wqe_cnt
,
564 if (!qp
->sqp_proxy_rcv
)
566 for (i
= 0; i
< qp
->rq
.wqe_cnt
; i
++) {
567 qp
->sqp_proxy_rcv
[i
].addr
=
568 kmalloc(sizeof (struct mlx4_ib_proxy_sqp_hdr
),
570 if (!qp
->sqp_proxy_rcv
[i
].addr
)
572 qp
->sqp_proxy_rcv
[i
].map
=
573 ib_dma_map_single(dev
, qp
->sqp_proxy_rcv
[i
].addr
,
574 sizeof (struct mlx4_ib_proxy_sqp_hdr
),
576 if (ib_dma_mapping_error(dev
, qp
->sqp_proxy_rcv
[i
].map
)) {
577 kfree(qp
->sqp_proxy_rcv
[i
].addr
);
586 ib_dma_unmap_single(dev
, qp
->sqp_proxy_rcv
[i
].map
,
587 sizeof (struct mlx4_ib_proxy_sqp_hdr
),
589 kfree(qp
->sqp_proxy_rcv
[i
].addr
);
591 kfree(qp
->sqp_proxy_rcv
);
592 qp
->sqp_proxy_rcv
= NULL
;
596 static void free_proxy_bufs(struct ib_device
*dev
, struct mlx4_ib_qp
*qp
)
600 for (i
= 0; i
< qp
->rq
.wqe_cnt
; i
++) {
601 ib_dma_unmap_single(dev
, qp
->sqp_proxy_rcv
[i
].map
,
602 sizeof (struct mlx4_ib_proxy_sqp_hdr
),
604 kfree(qp
->sqp_proxy_rcv
[i
].addr
);
606 kfree(qp
->sqp_proxy_rcv
);
609 static int qp_has_rq(struct ib_qp_init_attr
*attr
)
611 if (attr
->qp_type
== IB_QPT_XRC_INI
|| attr
->qp_type
== IB_QPT_XRC_TGT
)
617 static int qp0_enabled_vf(struct mlx4_dev
*dev
, int qpn
)
620 for (i
= 0; i
< dev
->caps
.num_ports
; i
++) {
621 if (qpn
== dev
->caps
.qp0_proxy
[i
])
622 return !!dev
->caps
.qp0_qkey
[i
];
627 static void mlx4_ib_free_qp_counter(struct mlx4_ib_dev
*dev
,
628 struct mlx4_ib_qp
*qp
)
630 mutex_lock(&dev
->counters_table
[qp
->port
- 1].mutex
);
631 mlx4_counter_free(dev
->dev
, qp
->counter_index
->index
);
632 list_del(&qp
->counter_index
->list
);
633 mutex_unlock(&dev
->counters_table
[qp
->port
- 1].mutex
);
635 kfree(qp
->counter_index
);
636 qp
->counter_index
= NULL
;
639 static int create_qp_common(struct mlx4_ib_dev
*dev
, struct ib_pd
*pd
,
640 struct ib_qp_init_attr
*init_attr
,
641 struct ib_udata
*udata
, int sqpn
, struct mlx4_ib_qp
**caller_qp
,
646 struct ib_qp_cap backup_cap
;
647 struct mlx4_ib_sqp
*sqp
;
648 struct mlx4_ib_qp
*qp
;
649 enum mlx4_ib_qp_type qp_type
= (enum mlx4_ib_qp_type
) init_attr
->qp_type
;
650 struct mlx4_ib_cq
*mcq
;
653 /* When tunneling special qps, we use a plain UD qp */
655 if (mlx4_is_mfunc(dev
->dev
) &&
656 (!mlx4_is_master(dev
->dev
) ||
657 !(init_attr
->create_flags
& MLX4_IB_SRIOV_SQP
))) {
658 if (init_attr
->qp_type
== IB_QPT_GSI
)
659 qp_type
= MLX4_IB_QPT_PROXY_GSI
;
661 if (mlx4_is_master(dev
->dev
) ||
662 qp0_enabled_vf(dev
->dev
, sqpn
))
663 qp_type
= MLX4_IB_QPT_PROXY_SMI_OWNER
;
665 qp_type
= MLX4_IB_QPT_PROXY_SMI
;
669 /* add extra sg entry for tunneling */
670 init_attr
->cap
.max_recv_sge
++;
671 } else if (init_attr
->create_flags
& MLX4_IB_SRIOV_TUNNEL_QP
) {
672 struct mlx4_ib_qp_tunnel_init_attr
*tnl_init
=
673 container_of(init_attr
,
674 struct mlx4_ib_qp_tunnel_init_attr
, init_attr
);
675 if ((tnl_init
->proxy_qp_type
!= IB_QPT_SMI
&&
676 tnl_init
->proxy_qp_type
!= IB_QPT_GSI
) ||
677 !mlx4_is_master(dev
->dev
))
679 if (tnl_init
->proxy_qp_type
== IB_QPT_GSI
)
680 qp_type
= MLX4_IB_QPT_TUN_GSI
;
681 else if (tnl_init
->slave
== mlx4_master_func_num(dev
->dev
) ||
682 mlx4_vf_smi_enabled(dev
->dev
, tnl_init
->slave
,
684 qp_type
= MLX4_IB_QPT_TUN_SMI_OWNER
;
686 qp_type
= MLX4_IB_QPT_TUN_SMI
;
687 /* we are definitely in the PPF here, since we are creating
688 * tunnel QPs. base_tunnel_sqpn is therefore valid. */
689 qpn
= dev
->dev
->phys_caps
.base_tunnel_sqpn
+ 8 * tnl_init
->slave
690 + tnl_init
->proxy_qp_type
* 2 + tnl_init
->port
- 1;
695 if (qp_type
== MLX4_IB_QPT_SMI
|| qp_type
== MLX4_IB_QPT_GSI
||
696 (qp_type
& (MLX4_IB_QPT_PROXY_SMI
| MLX4_IB_QPT_PROXY_SMI_OWNER
|
697 MLX4_IB_QPT_PROXY_GSI
| MLX4_IB_QPT_TUN_SMI_OWNER
))) {
698 sqp
= kzalloc(sizeof (struct mlx4_ib_sqp
), gfp
);
702 qp
->pri
.vid
= 0xFFFF;
703 qp
->alt
.vid
= 0xFFFF;
705 qp
= kzalloc(sizeof (struct mlx4_ib_qp
), gfp
);
708 qp
->pri
.vid
= 0xFFFF;
709 qp
->alt
.vid
= 0xFFFF;
714 qp
->mlx4_ib_qp_type
= qp_type
;
716 mutex_init(&qp
->mutex
);
717 spin_lock_init(&qp
->sq
.lock
);
718 spin_lock_init(&qp
->rq
.lock
);
719 INIT_LIST_HEAD(&qp
->gid_list
);
720 INIT_LIST_HEAD(&qp
->steering_rules
);
722 qp
->state
= IB_QPS_RESET
;
723 if (init_attr
->sq_sig_type
== IB_SIGNAL_ALL_WR
)
724 qp
->sq_signal_bits
= cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE
);
726 err
= set_rq_size(dev
, &init_attr
->cap
, !!pd
->uobject
, qp_has_rq(init_attr
), qp
);
731 struct mlx4_ib_create_qp ucmd
;
733 if (ib_copy_from_udata(&ucmd
, udata
, sizeof ucmd
)) {
738 qp
->sq_no_prefetch
= ucmd
.sq_no_prefetch
;
740 err
= set_user_sq_size(dev
, qp
, &ucmd
);
744 qp
->umem
= ib_umem_get(pd
->uobject
->context
, ucmd
.buf_addr
,
746 if (IS_ERR(qp
->umem
)) {
747 err
= PTR_ERR(qp
->umem
);
751 err
= mlx4_mtt_init(dev
->dev
, ib_umem_page_count(qp
->umem
),
752 ilog2(qp
->umem
->page_size
), &qp
->mtt
);
756 err
= mlx4_ib_umem_write_mtt(dev
, &qp
->mtt
, qp
->umem
);
760 if (qp_has_rq(init_attr
)) {
761 err
= mlx4_ib_db_map_user(to_mucontext(pd
->uobject
->context
),
762 ucmd
.db_addr
, &qp
->db
);
767 qp
->sq_no_prefetch
= 0;
769 if (init_attr
->create_flags
& IB_QP_CREATE_IPOIB_UD_LSO
)
770 qp
->flags
|= MLX4_IB_QP_LSO
;
772 if (init_attr
->create_flags
& IB_QP_CREATE_NETIF_QP
) {
773 if (dev
->steering_support
==
774 MLX4_STEERING_MODE_DEVICE_MANAGED
)
775 qp
->flags
|= MLX4_IB_QP_NETIF
;
780 memcpy(&backup_cap
, &init_attr
->cap
, sizeof(backup_cap
));
781 err
= set_kernel_sq_size(dev
, &init_attr
->cap
,
786 if (qp_has_rq(init_attr
)) {
787 err
= mlx4_db_alloc(dev
->dev
, &qp
->db
, 0, gfp
);
794 if (mlx4_buf_alloc(dev
->dev
, qp
->buf_size
, qp
->buf_size
,
796 memcpy(&init_attr
->cap
, &backup_cap
,
798 err
= set_kernel_sq_size(dev
, &init_attr
->cap
, qp_type
,
803 if (mlx4_buf_alloc(dev
->dev
, qp
->buf_size
,
804 PAGE_SIZE
* 2, &qp
->buf
, gfp
)) {
810 err
= mlx4_mtt_init(dev
->dev
, qp
->buf
.npages
, qp
->buf
.page_shift
,
815 err
= mlx4_buf_write_mtt(dev
->dev
, &qp
->mtt
, &qp
->buf
, gfp
);
819 qp
->sq
.wrid
= kmalloc_array(qp
->sq
.wqe_cnt
, sizeof(u64
),
822 qp
->sq
.wrid
= __vmalloc(qp
->sq
.wqe_cnt
* sizeof(u64
),
824 qp
->rq
.wrid
= kmalloc_array(qp
->rq
.wqe_cnt
, sizeof(u64
),
827 qp
->rq
.wrid
= __vmalloc(qp
->rq
.wqe_cnt
* sizeof(u64
),
829 if (!qp
->sq
.wrid
|| !qp
->rq
.wrid
) {
836 if (qp
->mlx4_ib_qp_type
& (MLX4_IB_QPT_PROXY_SMI_OWNER
|
837 MLX4_IB_QPT_PROXY_SMI
| MLX4_IB_QPT_PROXY_GSI
)) {
838 if (alloc_proxy_bufs(pd
->device
, qp
)) {
844 /* Raw packet QPNs may not have bits 6,7 set in their qp_num;
845 * otherwise, the WQE BlueFlame setup flow wrongly causes
847 if (init_attr
->qp_type
== IB_QPT_RAW_PACKET
)
848 err
= mlx4_qp_reserve_range(dev
->dev
, 1, 1, &qpn
,
849 (init_attr
->cap
.max_send_wr
?
850 MLX4_RESERVE_ETH_BF_QP
: 0) |
851 (init_attr
->cap
.max_recv_wr
?
852 MLX4_RESERVE_A0_QP
: 0));
854 if (qp
->flags
& MLX4_IB_QP_NETIF
)
855 err
= mlx4_ib_steer_qp_alloc(dev
, 1, &qpn
);
857 err
= mlx4_qp_reserve_range(dev
->dev
, 1, 1,
863 if (init_attr
->create_flags
& IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK
)
864 qp
->flags
|= MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK
;
866 err
= mlx4_qp_alloc(dev
->dev
, qpn
, &qp
->mqp
, gfp
);
870 if (init_attr
->qp_type
== IB_QPT_XRC_TGT
)
871 qp
->mqp
.qpn
|= (1 << 23);
874 * Hardware wants QPN written in big-endian order (after
875 * shifting) for send doorbell. Precompute this value to save
876 * a little bit when posting sends.
878 qp
->doorbell_qpn
= swab32(qp
->mqp
.qpn
<< 8);
880 qp
->mqp
.event
= mlx4_ib_qp_event
;
884 spin_lock_irqsave(&dev
->reset_flow_resource_lock
, flags
);
885 mlx4_ib_lock_cqs(to_mcq(init_attr
->send_cq
),
886 to_mcq(init_attr
->recv_cq
));
887 /* Maintain device to QPs access, needed for further handling
890 list_add_tail(&qp
->qps_list
, &dev
->qp_list
);
891 /* Maintain CQ to QPs access, needed for further handling
894 mcq
= to_mcq(init_attr
->send_cq
);
895 list_add_tail(&qp
->cq_send_list
, &mcq
->send_qp_list
);
896 mcq
= to_mcq(init_attr
->recv_cq
);
897 list_add_tail(&qp
->cq_recv_list
, &mcq
->recv_qp_list
);
898 mlx4_ib_unlock_cqs(to_mcq(init_attr
->send_cq
),
899 to_mcq(init_attr
->recv_cq
));
900 spin_unlock_irqrestore(&dev
->reset_flow_resource_lock
, flags
);
905 if (qp
->flags
& MLX4_IB_QP_NETIF
)
906 mlx4_ib_steer_qp_free(dev
, qpn
, 1);
908 mlx4_qp_release_range(dev
->dev
, qpn
, 1);
911 if (qp
->mlx4_ib_qp_type
== MLX4_IB_QPT_PROXY_GSI
)
912 free_proxy_bufs(pd
->device
, qp
);
915 if (qp_has_rq(init_attr
))
916 mlx4_ib_db_unmap_user(to_mucontext(pd
->uobject
->context
), &qp
->db
);
923 mlx4_mtt_cleanup(dev
->dev
, &qp
->mtt
);
927 ib_umem_release(qp
->umem
);
929 mlx4_buf_free(dev
->dev
, qp
->buf_size
, &qp
->buf
);
932 if (!pd
->uobject
&& qp_has_rq(init_attr
))
933 mlx4_db_free(dev
->dev
, &qp
->db
);
941 static enum mlx4_qp_state
to_mlx4_state(enum ib_qp_state state
)
944 case IB_QPS_RESET
: return MLX4_QP_STATE_RST
;
945 case IB_QPS_INIT
: return MLX4_QP_STATE_INIT
;
946 case IB_QPS_RTR
: return MLX4_QP_STATE_RTR
;
947 case IB_QPS_RTS
: return MLX4_QP_STATE_RTS
;
948 case IB_QPS_SQD
: return MLX4_QP_STATE_SQD
;
949 case IB_QPS_SQE
: return MLX4_QP_STATE_SQER
;
950 case IB_QPS_ERR
: return MLX4_QP_STATE_ERR
;
955 static void mlx4_ib_lock_cqs(struct mlx4_ib_cq
*send_cq
, struct mlx4_ib_cq
*recv_cq
)
956 __acquires(&send_cq
->lock
) __acquires(&recv_cq
->lock
)
958 if (send_cq
== recv_cq
) {
959 spin_lock(&send_cq
->lock
);
960 __acquire(&recv_cq
->lock
);
961 } else if (send_cq
->mcq
.cqn
< recv_cq
->mcq
.cqn
) {
962 spin_lock(&send_cq
->lock
);
963 spin_lock_nested(&recv_cq
->lock
, SINGLE_DEPTH_NESTING
);
965 spin_lock(&recv_cq
->lock
);
966 spin_lock_nested(&send_cq
->lock
, SINGLE_DEPTH_NESTING
);
970 static void mlx4_ib_unlock_cqs(struct mlx4_ib_cq
*send_cq
, struct mlx4_ib_cq
*recv_cq
)
971 __releases(&send_cq
->lock
) __releases(&recv_cq
->lock
)
973 if (send_cq
== recv_cq
) {
974 __release(&recv_cq
->lock
);
975 spin_unlock(&send_cq
->lock
);
976 } else if (send_cq
->mcq
.cqn
< recv_cq
->mcq
.cqn
) {
977 spin_unlock(&recv_cq
->lock
);
978 spin_unlock(&send_cq
->lock
);
980 spin_unlock(&send_cq
->lock
);
981 spin_unlock(&recv_cq
->lock
);
985 static void del_gid_entries(struct mlx4_ib_qp
*qp
)
987 struct mlx4_ib_gid_entry
*ge
, *tmp
;
989 list_for_each_entry_safe(ge
, tmp
, &qp
->gid_list
, list
) {
995 static struct mlx4_ib_pd
*get_pd(struct mlx4_ib_qp
*qp
)
997 if (qp
->ibqp
.qp_type
== IB_QPT_XRC_TGT
)
998 return to_mpd(to_mxrcd(qp
->ibqp
.xrcd
)->pd
);
1000 return to_mpd(qp
->ibqp
.pd
);
1003 static void get_cqs(struct mlx4_ib_qp
*qp
,
1004 struct mlx4_ib_cq
**send_cq
, struct mlx4_ib_cq
**recv_cq
)
1006 switch (qp
->ibqp
.qp_type
) {
1007 case IB_QPT_XRC_TGT
:
1008 *send_cq
= to_mcq(to_mxrcd(qp
->ibqp
.xrcd
)->cq
);
1009 *recv_cq
= *send_cq
;
1011 case IB_QPT_XRC_INI
:
1012 *send_cq
= to_mcq(qp
->ibqp
.send_cq
);
1013 *recv_cq
= *send_cq
;
1016 *send_cq
= to_mcq(qp
->ibqp
.send_cq
);
1017 *recv_cq
= to_mcq(qp
->ibqp
.recv_cq
);
1022 static void destroy_qp_common(struct mlx4_ib_dev
*dev
, struct mlx4_ib_qp
*qp
,
1025 struct mlx4_ib_cq
*send_cq
, *recv_cq
;
1026 unsigned long flags
;
1028 if (qp
->state
!= IB_QPS_RESET
) {
1029 if (mlx4_qp_modify(dev
->dev
, NULL
, to_mlx4_state(qp
->state
),
1030 MLX4_QP_STATE_RST
, NULL
, 0, 0, &qp
->mqp
))
1031 pr_warn("modify QP %06x to RESET failed.\n",
1033 if (qp
->pri
.smac
|| (!qp
->pri
.smac
&& qp
->pri
.smac_port
)) {
1034 mlx4_unregister_mac(dev
->dev
, qp
->pri
.smac_port
, qp
->pri
.smac
);
1036 qp
->pri
.smac_port
= 0;
1039 mlx4_unregister_mac(dev
->dev
, qp
->alt
.smac_port
, qp
->alt
.smac
);
1042 if (qp
->pri
.vid
< 0x1000) {
1043 mlx4_unregister_vlan(dev
->dev
, qp
->pri
.vlan_port
, qp
->pri
.vid
);
1044 qp
->pri
.vid
= 0xFFFF;
1045 qp
->pri
.candidate_vid
= 0xFFFF;
1046 qp
->pri
.update_vid
= 0;
1048 if (qp
->alt
.vid
< 0x1000) {
1049 mlx4_unregister_vlan(dev
->dev
, qp
->alt
.vlan_port
, qp
->alt
.vid
);
1050 qp
->alt
.vid
= 0xFFFF;
1051 qp
->alt
.candidate_vid
= 0xFFFF;
1052 qp
->alt
.update_vid
= 0;
1056 get_cqs(qp
, &send_cq
, &recv_cq
);
1058 spin_lock_irqsave(&dev
->reset_flow_resource_lock
, flags
);
1059 mlx4_ib_lock_cqs(send_cq
, recv_cq
);
1061 /* del from lists under both locks above to protect reset flow paths */
1062 list_del(&qp
->qps_list
);
1063 list_del(&qp
->cq_send_list
);
1064 list_del(&qp
->cq_recv_list
);
1066 __mlx4_ib_cq_clean(recv_cq
, qp
->mqp
.qpn
,
1067 qp
->ibqp
.srq
? to_msrq(qp
->ibqp
.srq
): NULL
);
1068 if (send_cq
!= recv_cq
)
1069 __mlx4_ib_cq_clean(send_cq
, qp
->mqp
.qpn
, NULL
);
1072 mlx4_qp_remove(dev
->dev
, &qp
->mqp
);
1074 mlx4_ib_unlock_cqs(send_cq
, recv_cq
);
1075 spin_unlock_irqrestore(&dev
->reset_flow_resource_lock
, flags
);
1077 mlx4_qp_free(dev
->dev
, &qp
->mqp
);
1079 if (!is_sqp(dev
, qp
) && !is_tunnel_qp(dev
, qp
)) {
1080 if (qp
->flags
& MLX4_IB_QP_NETIF
)
1081 mlx4_ib_steer_qp_free(dev
, qp
->mqp
.qpn
, 1);
1083 mlx4_qp_release_range(dev
->dev
, qp
->mqp
.qpn
, 1);
1086 mlx4_mtt_cleanup(dev
->dev
, &qp
->mtt
);
1090 mlx4_ib_db_unmap_user(to_mucontext(qp
->ibqp
.uobject
->context
),
1092 ib_umem_release(qp
->umem
);
1094 kvfree(qp
->sq
.wrid
);
1095 kvfree(qp
->rq
.wrid
);
1096 if (qp
->mlx4_ib_qp_type
& (MLX4_IB_QPT_PROXY_SMI_OWNER
|
1097 MLX4_IB_QPT_PROXY_SMI
| MLX4_IB_QPT_PROXY_GSI
))
1098 free_proxy_bufs(&dev
->ib_dev
, qp
);
1099 mlx4_buf_free(dev
->dev
, qp
->buf_size
, &qp
->buf
);
1101 mlx4_db_free(dev
->dev
, &qp
->db
);
1104 del_gid_entries(qp
);
1107 static u32
get_sqp_num(struct mlx4_ib_dev
*dev
, struct ib_qp_init_attr
*attr
)
1110 if (!mlx4_is_mfunc(dev
->dev
) ||
1111 (mlx4_is_master(dev
->dev
) &&
1112 attr
->create_flags
& MLX4_IB_SRIOV_SQP
)) {
1113 return dev
->dev
->phys_caps
.base_sqpn
+
1114 (attr
->qp_type
== IB_QPT_SMI
? 0 : 2) +
1117 /* PF or VF -- creating proxies */
1118 if (attr
->qp_type
== IB_QPT_SMI
)
1119 return dev
->dev
->caps
.qp0_proxy
[attr
->port_num
- 1];
1121 return dev
->dev
->caps
.qp1_proxy
[attr
->port_num
- 1];
1124 static struct ib_qp
*_mlx4_ib_create_qp(struct ib_pd
*pd
,
1125 struct ib_qp_init_attr
*init_attr
,
1126 struct ib_udata
*udata
)
1128 struct mlx4_ib_qp
*qp
= NULL
;
1130 int sup_u_create_flags
= MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK
;
1134 gfp
= (init_attr
->create_flags
& MLX4_IB_QP_CREATE_USE_GFP_NOIO
) ?
1135 GFP_NOIO
: GFP_KERNEL
;
1137 * We only support LSO, vendor flag1, and multicast loopback blocking,
1138 * and only for kernel UD QPs.
1140 if (init_attr
->create_flags
& ~(MLX4_IB_QP_LSO
|
1141 MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK
|
1142 MLX4_IB_SRIOV_TUNNEL_QP
|
1145 MLX4_IB_QP_CREATE_ROCE_V2_GSI
|
1146 MLX4_IB_QP_CREATE_USE_GFP_NOIO
))
1147 return ERR_PTR(-EINVAL
);
1149 if (init_attr
->create_flags
& IB_QP_CREATE_NETIF_QP
) {
1150 if (init_attr
->qp_type
!= IB_QPT_UD
)
1151 return ERR_PTR(-EINVAL
);
1154 if (init_attr
->create_flags
) {
1155 if (udata
&& init_attr
->create_flags
& ~(sup_u_create_flags
))
1156 return ERR_PTR(-EINVAL
);
1158 if ((init_attr
->create_flags
& ~(MLX4_IB_SRIOV_SQP
|
1159 MLX4_IB_QP_CREATE_USE_GFP_NOIO
|
1160 MLX4_IB_QP_CREATE_ROCE_V2_GSI
|
1161 MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK
) &&
1162 init_attr
->qp_type
!= IB_QPT_UD
) ||
1163 (init_attr
->create_flags
& MLX4_IB_SRIOV_SQP
&&
1164 init_attr
->qp_type
> IB_QPT_GSI
) ||
1165 (init_attr
->create_flags
& MLX4_IB_QP_CREATE_ROCE_V2_GSI
&&
1166 init_attr
->qp_type
!= IB_QPT_GSI
))
1167 return ERR_PTR(-EINVAL
);
1170 switch (init_attr
->qp_type
) {
1171 case IB_QPT_XRC_TGT
:
1172 pd
= to_mxrcd(init_attr
->xrcd
)->pd
;
1173 xrcdn
= to_mxrcd(init_attr
->xrcd
)->xrcdn
;
1174 init_attr
->send_cq
= to_mxrcd(init_attr
->xrcd
)->cq
;
1176 case IB_QPT_XRC_INI
:
1177 if (!(to_mdev(pd
->device
)->dev
->caps
.flags
& MLX4_DEV_CAP_FLAG_XRC
))
1178 return ERR_PTR(-ENOSYS
);
1179 init_attr
->recv_cq
= init_attr
->send_cq
;
1183 case IB_QPT_RAW_PACKET
:
1184 qp
= kzalloc(sizeof *qp
, gfp
);
1186 return ERR_PTR(-ENOMEM
);
1187 qp
->pri
.vid
= 0xFFFF;
1188 qp
->alt
.vid
= 0xFFFF;
1192 err
= create_qp_common(to_mdev(pd
->device
), pd
, init_attr
,
1193 udata
, 0, &qp
, gfp
);
1196 return ERR_PTR(err
);
1199 qp
->ibqp
.qp_num
= qp
->mqp
.qpn
;
1209 /* Userspace is not allowed to create special QPs: */
1211 return ERR_PTR(-EINVAL
);
1212 if (init_attr
->create_flags
& MLX4_IB_QP_CREATE_ROCE_V2_GSI
) {
1213 int res
= mlx4_qp_reserve_range(to_mdev(pd
->device
)->dev
, 1, 1, &sqpn
, 0);
1216 return ERR_PTR(res
);
1218 sqpn
= get_sqp_num(to_mdev(pd
->device
), init_attr
);
1221 err
= create_qp_common(to_mdev(pd
->device
), pd
, init_attr
, udata
,
1225 return ERR_PTR(err
);
1227 qp
->port
= init_attr
->port_num
;
1228 qp
->ibqp
.qp_num
= init_attr
->qp_type
== IB_QPT_SMI
? 0 :
1229 init_attr
->create_flags
& MLX4_IB_QP_CREATE_ROCE_V2_GSI
? sqpn
: 1;
1233 /* Don't support raw QPs */
1234 return ERR_PTR(-EINVAL
);
1240 struct ib_qp
*mlx4_ib_create_qp(struct ib_pd
*pd
,
1241 struct ib_qp_init_attr
*init_attr
,
1242 struct ib_udata
*udata
) {
1243 struct ib_device
*device
= pd
? pd
->device
: init_attr
->xrcd
->device
;
1245 struct mlx4_ib_dev
*dev
= to_mdev(device
);
1247 ibqp
= _mlx4_ib_create_qp(pd
, init_attr
, udata
);
1249 if (!IS_ERR(ibqp
) &&
1250 (init_attr
->qp_type
== IB_QPT_GSI
) &&
1251 !(init_attr
->create_flags
& MLX4_IB_QP_CREATE_ROCE_V2_GSI
)) {
1252 struct mlx4_ib_sqp
*sqp
= to_msqp((to_mqp(ibqp
)));
1253 int is_eth
= rdma_cap_eth_ah(&dev
->ib_dev
, init_attr
->port_num
);
1256 dev
->dev
->caps
.flags2
& MLX4_DEV_CAP_FLAG2_ROCE_V1_V2
) {
1257 init_attr
->create_flags
|= MLX4_IB_QP_CREATE_ROCE_V2_GSI
;
1258 sqp
->roce_v2_gsi
= ib_create_qp(pd
, init_attr
);
1260 if (IS_ERR(sqp
->roce_v2_gsi
)) {
1261 pr_err("Failed to create GSI QP for RoCEv2 (%ld)\n", PTR_ERR(sqp
->roce_v2_gsi
));
1262 sqp
->roce_v2_gsi
= NULL
;
1264 sqp
= to_msqp(to_mqp(sqp
->roce_v2_gsi
));
1265 sqp
->qp
.flags
|= MLX4_IB_ROCE_V2_GSI_QP
;
1268 init_attr
->create_flags
&= ~MLX4_IB_QP_CREATE_ROCE_V2_GSI
;
1274 static int _mlx4_ib_destroy_qp(struct ib_qp
*qp
)
1276 struct mlx4_ib_dev
*dev
= to_mdev(qp
->device
);
1277 struct mlx4_ib_qp
*mqp
= to_mqp(qp
);
1278 struct mlx4_ib_pd
*pd
;
1280 if (is_qp0(dev
, mqp
))
1281 mlx4_CLOSE_PORT(dev
->dev
, mqp
->port
);
1283 if (dev
->qp1_proxy
[mqp
->port
- 1] == mqp
) {
1284 mutex_lock(&dev
->qp1_proxy_lock
[mqp
->port
- 1]);
1285 dev
->qp1_proxy
[mqp
->port
- 1] = NULL
;
1286 mutex_unlock(&dev
->qp1_proxy_lock
[mqp
->port
- 1]);
1289 if (mqp
->counter_index
)
1290 mlx4_ib_free_qp_counter(dev
, mqp
);
1293 destroy_qp_common(dev
, mqp
, !!pd
->ibpd
.uobject
);
1295 if (is_sqp(dev
, mqp
))
1296 kfree(to_msqp(mqp
));
1303 int mlx4_ib_destroy_qp(struct ib_qp
*qp
)
1305 struct mlx4_ib_qp
*mqp
= to_mqp(qp
);
1307 if (mqp
->mlx4_ib_qp_type
== MLX4_IB_QPT_GSI
) {
1308 struct mlx4_ib_sqp
*sqp
= to_msqp(mqp
);
1310 if (sqp
->roce_v2_gsi
)
1311 ib_destroy_qp(sqp
->roce_v2_gsi
);
1314 return _mlx4_ib_destroy_qp(qp
);
1317 static int to_mlx4_st(struct mlx4_ib_dev
*dev
, enum mlx4_ib_qp_type type
)
1320 case MLX4_IB_QPT_RC
: return MLX4_QP_ST_RC
;
1321 case MLX4_IB_QPT_UC
: return MLX4_QP_ST_UC
;
1322 case MLX4_IB_QPT_UD
: return MLX4_QP_ST_UD
;
1323 case MLX4_IB_QPT_XRC_INI
:
1324 case MLX4_IB_QPT_XRC_TGT
: return MLX4_QP_ST_XRC
;
1325 case MLX4_IB_QPT_SMI
:
1326 case MLX4_IB_QPT_GSI
:
1327 case MLX4_IB_QPT_RAW_PACKET
: return MLX4_QP_ST_MLX
;
1329 case MLX4_IB_QPT_PROXY_SMI_OWNER
:
1330 case MLX4_IB_QPT_TUN_SMI_OWNER
: return (mlx4_is_mfunc(dev
->dev
) ?
1331 MLX4_QP_ST_MLX
: -1);
1332 case MLX4_IB_QPT_PROXY_SMI
:
1333 case MLX4_IB_QPT_TUN_SMI
:
1334 case MLX4_IB_QPT_PROXY_GSI
:
1335 case MLX4_IB_QPT_TUN_GSI
: return (mlx4_is_mfunc(dev
->dev
) ?
1336 MLX4_QP_ST_UD
: -1);
1341 static __be32
to_mlx4_access_flags(struct mlx4_ib_qp
*qp
, const struct ib_qp_attr
*attr
,
1346 u32 hw_access_flags
= 0;
1348 if (attr_mask
& IB_QP_MAX_DEST_RD_ATOMIC
)
1349 dest_rd_atomic
= attr
->max_dest_rd_atomic
;
1351 dest_rd_atomic
= qp
->resp_depth
;
1353 if (attr_mask
& IB_QP_ACCESS_FLAGS
)
1354 access_flags
= attr
->qp_access_flags
;
1356 access_flags
= qp
->atomic_rd_en
;
1358 if (!dest_rd_atomic
)
1359 access_flags
&= IB_ACCESS_REMOTE_WRITE
;
1361 if (access_flags
& IB_ACCESS_REMOTE_READ
)
1362 hw_access_flags
|= MLX4_QP_BIT_RRE
;
1363 if (access_flags
& IB_ACCESS_REMOTE_ATOMIC
)
1364 hw_access_flags
|= MLX4_QP_BIT_RAE
;
1365 if (access_flags
& IB_ACCESS_REMOTE_WRITE
)
1366 hw_access_flags
|= MLX4_QP_BIT_RWE
;
1368 return cpu_to_be32(hw_access_flags
);
1371 static void store_sqp_attrs(struct mlx4_ib_sqp
*sqp
, const struct ib_qp_attr
*attr
,
1374 if (attr_mask
& IB_QP_PKEY_INDEX
)
1375 sqp
->pkey_index
= attr
->pkey_index
;
1376 if (attr_mask
& IB_QP_QKEY
)
1377 sqp
->qkey
= attr
->qkey
;
1378 if (attr_mask
& IB_QP_SQ_PSN
)
1379 sqp
->send_psn
= attr
->sq_psn
;
1382 static void mlx4_set_sched(struct mlx4_qp_path
*path
, u8 port
)
1384 path
->sched_queue
= (path
->sched_queue
& 0xbf) | ((port
- 1) << 6);
1387 static int _mlx4_set_path(struct mlx4_ib_dev
*dev
, const struct ib_ah_attr
*ah
,
1388 u64 smac
, u16 vlan_tag
, struct mlx4_qp_path
*path
,
1389 struct mlx4_roce_smac_vlan_info
*smac_info
, u8 port
)
1391 int is_eth
= rdma_port_get_link_layer(&dev
->ib_dev
, port
) ==
1392 IB_LINK_LAYER_ETHERNET
;
1398 path
->grh_mylmc
= ah
->src_path_bits
& 0x7f;
1399 path
->rlid
= cpu_to_be16(ah
->dlid
);
1400 if (ah
->static_rate
) {
1401 path
->static_rate
= ah
->static_rate
+ MLX4_STAT_RATE_OFFSET
;
1402 while (path
->static_rate
> IB_RATE_2_5_GBPS
+ MLX4_STAT_RATE_OFFSET
&&
1403 !(1 << path
->static_rate
& dev
->dev
->caps
.stat_rate_support
))
1404 --path
->static_rate
;
1406 path
->static_rate
= 0;
1408 if (ah
->ah_flags
& IB_AH_GRH
) {
1409 int real_sgid_index
= mlx4_ib_gid_index_to_real_index(dev
,
1411 ah
->grh
.sgid_index
);
1413 if (real_sgid_index
>= dev
->dev
->caps
.gid_table_len
[port
]) {
1414 pr_err("sgid_index (%u) too large. max is %d\n",
1415 real_sgid_index
, dev
->dev
->caps
.gid_table_len
[port
] - 1);
1419 path
->grh_mylmc
|= 1 << 7;
1420 path
->mgid_index
= real_sgid_index
;
1421 path
->hop_limit
= ah
->grh
.hop_limit
;
1422 path
->tclass_flowlabel
=
1423 cpu_to_be32((ah
->grh
.traffic_class
<< 20) |
1424 (ah
->grh
.flow_label
));
1425 memcpy(path
->rgid
, ah
->grh
.dgid
.raw
, 16);
1429 if (!(ah
->ah_flags
& IB_AH_GRH
))
1432 path
->sched_queue
= MLX4_IB_DEFAULT_SCHED_QUEUE
|
1433 ((port
- 1) << 6) | ((ah
->sl
& 7) << 3);
1435 path
->feup
|= MLX4_FEUP_FORCE_ETH_UP
;
1436 if (vlan_tag
< 0x1000) {
1437 if (smac_info
->vid
< 0x1000) {
1438 /* both valid vlan ids */
1439 if (smac_info
->vid
!= vlan_tag
) {
1440 /* different VIDs. unreg old and reg new */
1441 err
= mlx4_register_vlan(dev
->dev
, port
, vlan_tag
, &vidx
);
1444 smac_info
->candidate_vid
= vlan_tag
;
1445 smac_info
->candidate_vlan_index
= vidx
;
1446 smac_info
->candidate_vlan_port
= port
;
1447 smac_info
->update_vid
= 1;
1448 path
->vlan_index
= vidx
;
1450 path
->vlan_index
= smac_info
->vlan_index
;
1453 /* no current vlan tag in qp */
1454 err
= mlx4_register_vlan(dev
->dev
, port
, vlan_tag
, &vidx
);
1457 smac_info
->candidate_vid
= vlan_tag
;
1458 smac_info
->candidate_vlan_index
= vidx
;
1459 smac_info
->candidate_vlan_port
= port
;
1460 smac_info
->update_vid
= 1;
1461 path
->vlan_index
= vidx
;
1463 path
->feup
|= MLX4_FVL_FORCE_ETH_VLAN
;
1466 /* have current vlan tag. unregister it at modify-qp success */
1467 if (smac_info
->vid
< 0x1000) {
1468 smac_info
->candidate_vid
= 0xFFFF;
1469 smac_info
->update_vid
= 1;
1473 /* get smac_index for RoCE use.
1474 * If no smac was yet assigned, register one.
1475 * If one was already assigned, but the new mac differs,
1476 * unregister the old one and register the new one.
1478 if ((!smac_info
->smac
&& !smac_info
->smac_port
) ||
1479 smac_info
->smac
!= smac
) {
1480 /* register candidate now, unreg if needed, after success */
1481 smac_index
= mlx4_register_mac(dev
->dev
, port
, smac
);
1482 if (smac_index
>= 0) {
1483 smac_info
->candidate_smac_index
= smac_index
;
1484 smac_info
->candidate_smac
= smac
;
1485 smac_info
->candidate_smac_port
= port
;
1490 smac_index
= smac_info
->smac_index
;
1493 memcpy(path
->dmac
, ah
->dmac
, 6);
1494 path
->ackto
= MLX4_IB_LINK_TYPE_ETH
;
1495 /* put MAC table smac index for IBoE */
1496 path
->grh_mylmc
= (u8
) (smac_index
) | 0x80;
1498 path
->sched_queue
= MLX4_IB_DEFAULT_SCHED_QUEUE
|
1499 ((port
- 1) << 6) | ((ah
->sl
& 0xf) << 2);
1505 static int mlx4_set_path(struct mlx4_ib_dev
*dev
, const struct ib_qp_attr
*qp
,
1506 enum ib_qp_attr_mask qp_attr_mask
,
1507 struct mlx4_ib_qp
*mqp
,
1508 struct mlx4_qp_path
*path
, u8 port
,
1509 u16 vlan_id
, u8
*smac
)
1511 return _mlx4_set_path(dev
, &qp
->ah_attr
,
1512 mlx4_mac_to_u64(smac
),
1514 path
, &mqp
->pri
, port
);
1517 static int mlx4_set_alt_path(struct mlx4_ib_dev
*dev
,
1518 const struct ib_qp_attr
*qp
,
1519 enum ib_qp_attr_mask qp_attr_mask
,
1520 struct mlx4_ib_qp
*mqp
,
1521 struct mlx4_qp_path
*path
, u8 port
)
1523 return _mlx4_set_path(dev
, &qp
->alt_ah_attr
,
1526 path
, &mqp
->alt
, port
);
1529 static void update_mcg_macs(struct mlx4_ib_dev
*dev
, struct mlx4_ib_qp
*qp
)
1531 struct mlx4_ib_gid_entry
*ge
, *tmp
;
1533 list_for_each_entry_safe(ge
, tmp
, &qp
->gid_list
, list
) {
1534 if (!ge
->added
&& mlx4_ib_add_mc(dev
, qp
, &ge
->gid
)) {
1536 ge
->port
= qp
->port
;
1541 static int handle_eth_ud_smac_index(struct mlx4_ib_dev
*dev
,
1542 struct mlx4_ib_qp
*qp
,
1543 struct mlx4_qp_context
*context
)
1548 u64_mac
= atomic64_read(&dev
->iboe
.mac
[qp
->port
- 1]);
1550 context
->pri_path
.sched_queue
= MLX4_IB_DEFAULT_SCHED_QUEUE
| ((qp
->port
- 1) << 6);
1551 if (!qp
->pri
.smac
&& !qp
->pri
.smac_port
) {
1552 smac_index
= mlx4_register_mac(dev
->dev
, qp
->port
, u64_mac
);
1553 if (smac_index
>= 0) {
1554 qp
->pri
.candidate_smac_index
= smac_index
;
1555 qp
->pri
.candidate_smac
= u64_mac
;
1556 qp
->pri
.candidate_smac_port
= qp
->port
;
1557 context
->pri_path
.grh_mylmc
= 0x80 | (u8
) smac_index
;
1565 static int create_qp_lb_counter(struct mlx4_ib_dev
*dev
, struct mlx4_ib_qp
*qp
)
1567 struct counter_index
*new_counter_index
;
1571 if (rdma_port_get_link_layer(&dev
->ib_dev
, qp
->port
) !=
1572 IB_LINK_LAYER_ETHERNET
||
1573 !(qp
->flags
& MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK
) ||
1574 !(dev
->dev
->caps
.flags2
& MLX4_DEV_CAP_FLAG2_LB_SRC_CHK
))
1577 err
= mlx4_counter_alloc(dev
->dev
, &tmp_idx
);
1581 new_counter_index
= kmalloc(sizeof(*new_counter_index
), GFP_KERNEL
);
1582 if (!new_counter_index
) {
1583 mlx4_counter_free(dev
->dev
, tmp_idx
);
1587 new_counter_index
->index
= tmp_idx
;
1588 new_counter_index
->allocated
= 1;
1589 qp
->counter_index
= new_counter_index
;
1591 mutex_lock(&dev
->counters_table
[qp
->port
- 1].mutex
);
1592 list_add_tail(&new_counter_index
->list
,
1593 &dev
->counters_table
[qp
->port
- 1].counters_list
);
1594 mutex_unlock(&dev
->counters_table
[qp
->port
- 1].mutex
);
1600 MLX4_QPC_ROCE_MODE_1
= 0,
1601 MLX4_QPC_ROCE_MODE_2
= 2,
1602 MLX4_QPC_ROCE_MODE_UNDEFINED
= 0xff
1605 static u8
gid_type_to_qpc(enum ib_gid_type gid_type
)
1608 case IB_GID_TYPE_ROCE
:
1609 return MLX4_QPC_ROCE_MODE_1
;
1610 case IB_GID_TYPE_ROCE_UDP_ENCAP
:
1611 return MLX4_QPC_ROCE_MODE_2
;
1613 return MLX4_QPC_ROCE_MODE_UNDEFINED
;
1617 static int __mlx4_ib_modify_qp(struct ib_qp
*ibqp
,
1618 const struct ib_qp_attr
*attr
, int attr_mask
,
1619 enum ib_qp_state cur_state
, enum ib_qp_state new_state
)
1621 struct mlx4_ib_dev
*dev
= to_mdev(ibqp
->device
);
1622 struct mlx4_ib_qp
*qp
= to_mqp(ibqp
);
1623 struct mlx4_ib_pd
*pd
;
1624 struct mlx4_ib_cq
*send_cq
, *recv_cq
;
1625 struct mlx4_qp_context
*context
;
1626 enum mlx4_qp_optpar optpar
= 0;
1632 /* APM is not supported under RoCE */
1633 if (attr_mask
& IB_QP_ALT_PATH
&&
1634 rdma_port_get_link_layer(&dev
->ib_dev
, qp
->port
) ==
1635 IB_LINK_LAYER_ETHERNET
)
1638 context
= kzalloc(sizeof *context
, GFP_KERNEL
);
1642 context
->flags
= cpu_to_be32((to_mlx4_state(new_state
) << 28) |
1643 (to_mlx4_st(dev
, qp
->mlx4_ib_qp_type
) << 16));
1645 if (!(attr_mask
& IB_QP_PATH_MIG_STATE
))
1646 context
->flags
|= cpu_to_be32(MLX4_QP_PM_MIGRATED
<< 11);
1648 optpar
|= MLX4_QP_OPTPAR_PM_STATE
;
1649 switch (attr
->path_mig_state
) {
1650 case IB_MIG_MIGRATED
:
1651 context
->flags
|= cpu_to_be32(MLX4_QP_PM_MIGRATED
<< 11);
1654 context
->flags
|= cpu_to_be32(MLX4_QP_PM_REARM
<< 11);
1657 context
->flags
|= cpu_to_be32(MLX4_QP_PM_ARMED
<< 11);
1662 if (ibqp
->qp_type
== IB_QPT_GSI
|| ibqp
->qp_type
== IB_QPT_SMI
)
1663 context
->mtu_msgmax
= (IB_MTU_4096
<< 5) | 11;
1664 else if (ibqp
->qp_type
== IB_QPT_RAW_PACKET
)
1665 context
->mtu_msgmax
= (MLX4_RAW_QP_MTU
<< 5) | MLX4_RAW_QP_MSGMAX
;
1666 else if (ibqp
->qp_type
== IB_QPT_UD
) {
1667 if (qp
->flags
& MLX4_IB_QP_LSO
)
1668 context
->mtu_msgmax
= (IB_MTU_4096
<< 5) |
1669 ilog2(dev
->dev
->caps
.max_gso_sz
);
1671 context
->mtu_msgmax
= (IB_MTU_4096
<< 5) | 12;
1672 } else if (attr_mask
& IB_QP_PATH_MTU
) {
1673 if (attr
->path_mtu
< IB_MTU_256
|| attr
->path_mtu
> IB_MTU_4096
) {
1674 pr_err("path MTU (%u) is invalid\n",
1678 context
->mtu_msgmax
= (attr
->path_mtu
<< 5) |
1679 ilog2(dev
->dev
->caps
.max_msg_sz
);
1683 context
->rq_size_stride
= ilog2(qp
->rq
.wqe_cnt
) << 3;
1684 context
->rq_size_stride
|= qp
->rq
.wqe_shift
- 4;
1687 context
->sq_size_stride
= ilog2(qp
->sq
.wqe_cnt
) << 3;
1688 context
->sq_size_stride
|= qp
->sq
.wqe_shift
- 4;
1690 if (new_state
== IB_QPS_RESET
&& qp
->counter_index
)
1691 mlx4_ib_free_qp_counter(dev
, qp
);
1693 if (cur_state
== IB_QPS_RESET
&& new_state
== IB_QPS_INIT
) {
1694 context
->sq_size_stride
|= !!qp
->sq_no_prefetch
<< 7;
1695 context
->xrcd
= cpu_to_be32((u32
) qp
->xrcdn
);
1696 if (ibqp
->qp_type
== IB_QPT_RAW_PACKET
)
1697 context
->param3
|= cpu_to_be32(1 << 30);
1700 if (qp
->ibqp
.uobject
)
1701 context
->usr_page
= cpu_to_be32(
1702 mlx4_to_hw_uar_index(dev
->dev
,
1703 to_mucontext(ibqp
->uobject
->context
)->uar
.index
));
1705 context
->usr_page
= cpu_to_be32(
1706 mlx4_to_hw_uar_index(dev
->dev
, dev
->priv_uar
.index
));
1708 if (attr_mask
& IB_QP_DEST_QPN
)
1709 context
->remote_qpn
= cpu_to_be32(attr
->dest_qp_num
);
1711 if (attr_mask
& IB_QP_PORT
) {
1712 if (cur_state
== IB_QPS_SQD
&& new_state
== IB_QPS_SQD
&&
1713 !(attr_mask
& IB_QP_AV
)) {
1714 mlx4_set_sched(&context
->pri_path
, attr
->port_num
);
1715 optpar
|= MLX4_QP_OPTPAR_SCHED_QUEUE
;
1719 if (cur_state
== IB_QPS_INIT
&& new_state
== IB_QPS_RTR
) {
1720 err
= create_qp_lb_counter(dev
, qp
);
1725 dev
->counters_table
[qp
->port
- 1].default_counter
;
1726 if (qp
->counter_index
)
1727 counter_index
= qp
->counter_index
->index
;
1729 if (counter_index
!= -1) {
1730 context
->pri_path
.counter_index
= counter_index
;
1731 optpar
|= MLX4_QP_OPTPAR_COUNTER_INDEX
;
1732 if (qp
->counter_index
) {
1733 context
->pri_path
.fl
|=
1734 MLX4_FL_ETH_SRC_CHECK_MC_LB
;
1735 context
->pri_path
.vlan_control
|=
1736 MLX4_CTRL_ETH_SRC_CHECK_IF_COUNTER
;
1739 context
->pri_path
.counter_index
=
1740 MLX4_SINK_COUNTER_INDEX(dev
->dev
);
1742 if (qp
->flags
& MLX4_IB_QP_NETIF
) {
1743 mlx4_ib_steer_qp_reg(dev
, qp
, 1);
1747 if (ibqp
->qp_type
== IB_QPT_GSI
) {
1748 enum ib_gid_type gid_type
= qp
->flags
& MLX4_IB_ROCE_V2_GSI_QP
?
1749 IB_GID_TYPE_ROCE_UDP_ENCAP
: IB_GID_TYPE_ROCE
;
1750 u8 qpc_roce_mode
= gid_type_to_qpc(gid_type
);
1752 context
->rlkey_roce_mode
|= (qpc_roce_mode
<< 6);
1756 if (attr_mask
& IB_QP_PKEY_INDEX
) {
1757 if (qp
->mlx4_ib_qp_type
& MLX4_IB_QPT_ANY_SRIOV
)
1758 context
->pri_path
.disable_pkey_check
= 0x40;
1759 context
->pri_path
.pkey_index
= attr
->pkey_index
;
1760 optpar
|= MLX4_QP_OPTPAR_PKEY_INDEX
;
1763 if (attr_mask
& IB_QP_AV
) {
1764 u8 port_num
= mlx4_is_bonded(to_mdev(ibqp
->device
)->dev
) ? 1 :
1765 attr_mask
& IB_QP_PORT
? attr
->port_num
: qp
->port
;
1767 struct ib_gid_attr gid_attr
;
1771 int is_eth
= rdma_cap_eth_ah(&dev
->ib_dev
, port_num
) &&
1772 attr
->ah_attr
.ah_flags
& IB_AH_GRH
;
1775 int index
= attr
->ah_attr
.grh
.sgid_index
;
1777 status
= ib_get_cached_gid(ibqp
->device
, port_num
,
1778 index
, &gid
, &gid_attr
);
1779 if (!status
&& !memcmp(&gid
, &zgid
, sizeof(gid
)))
1781 if (!status
&& gid_attr
.ndev
) {
1782 vlan
= rdma_vlan_dev_vlan_id(gid_attr
.ndev
);
1783 memcpy(smac
, gid_attr
.ndev
->dev_addr
, ETH_ALEN
);
1784 dev_put(gid_attr
.ndev
);
1790 if (mlx4_set_path(dev
, attr
, attr_mask
, qp
, &context
->pri_path
,
1791 port_num
, vlan
, smac
))
1794 optpar
|= (MLX4_QP_OPTPAR_PRIMARY_ADDR_PATH
|
1795 MLX4_QP_OPTPAR_SCHED_QUEUE
);
1798 (cur_state
== IB_QPS_INIT
&& new_state
== IB_QPS_RTR
)) {
1799 u8 qpc_roce_mode
= gid_type_to_qpc(gid_attr
.gid_type
);
1801 if (qpc_roce_mode
== MLX4_QPC_ROCE_MODE_UNDEFINED
) {
1805 context
->rlkey_roce_mode
|= (qpc_roce_mode
<< 6);
1810 if (attr_mask
& IB_QP_TIMEOUT
) {
1811 context
->pri_path
.ackto
|= attr
->timeout
<< 3;
1812 optpar
|= MLX4_QP_OPTPAR_ACK_TIMEOUT
;
1815 if (attr_mask
& IB_QP_ALT_PATH
) {
1816 if (attr
->alt_port_num
== 0 ||
1817 attr
->alt_port_num
> dev
->dev
->caps
.num_ports
)
1820 if (attr
->alt_pkey_index
>=
1821 dev
->dev
->caps
.pkey_table_len
[attr
->alt_port_num
])
1824 if (mlx4_set_alt_path(dev
, attr
, attr_mask
, qp
,
1826 attr
->alt_port_num
))
1829 context
->alt_path
.pkey_index
= attr
->alt_pkey_index
;
1830 context
->alt_path
.ackto
= attr
->alt_timeout
<< 3;
1831 optpar
|= MLX4_QP_OPTPAR_ALT_ADDR_PATH
;
1835 get_cqs(qp
, &send_cq
, &recv_cq
);
1836 context
->pd
= cpu_to_be32(pd
->pdn
);
1837 context
->cqn_send
= cpu_to_be32(send_cq
->mcq
.cqn
);
1838 context
->cqn_recv
= cpu_to_be32(recv_cq
->mcq
.cqn
);
1839 context
->params1
= cpu_to_be32(MLX4_IB_ACK_REQ_FREQ
<< 28);
1841 /* Set "fast registration enabled" for all kernel QPs */
1842 if (!qp
->ibqp
.uobject
)
1843 context
->params1
|= cpu_to_be32(1 << 11);
1845 if (attr_mask
& IB_QP_RNR_RETRY
) {
1846 context
->params1
|= cpu_to_be32(attr
->rnr_retry
<< 13);
1847 optpar
|= MLX4_QP_OPTPAR_RNR_RETRY
;
1850 if (attr_mask
& IB_QP_RETRY_CNT
) {
1851 context
->params1
|= cpu_to_be32(attr
->retry_cnt
<< 16);
1852 optpar
|= MLX4_QP_OPTPAR_RETRY_COUNT
;
1855 if (attr_mask
& IB_QP_MAX_QP_RD_ATOMIC
) {
1856 if (attr
->max_rd_atomic
)
1858 cpu_to_be32(fls(attr
->max_rd_atomic
- 1) << 21);
1859 optpar
|= MLX4_QP_OPTPAR_SRA_MAX
;
1862 if (attr_mask
& IB_QP_SQ_PSN
)
1863 context
->next_send_psn
= cpu_to_be32(attr
->sq_psn
);
1865 if (attr_mask
& IB_QP_MAX_DEST_RD_ATOMIC
) {
1866 if (attr
->max_dest_rd_atomic
)
1868 cpu_to_be32(fls(attr
->max_dest_rd_atomic
- 1) << 21);
1869 optpar
|= MLX4_QP_OPTPAR_RRA_MAX
;
1872 if (attr_mask
& (IB_QP_ACCESS_FLAGS
| IB_QP_MAX_DEST_RD_ATOMIC
)) {
1873 context
->params2
|= to_mlx4_access_flags(qp
, attr
, attr_mask
);
1874 optpar
|= MLX4_QP_OPTPAR_RWE
| MLX4_QP_OPTPAR_RRE
| MLX4_QP_OPTPAR_RAE
;
1878 context
->params2
|= cpu_to_be32(MLX4_QP_BIT_RIC
);
1880 if (attr_mask
& IB_QP_MIN_RNR_TIMER
) {
1881 context
->rnr_nextrecvpsn
|= cpu_to_be32(attr
->min_rnr_timer
<< 24);
1882 optpar
|= MLX4_QP_OPTPAR_RNR_TIMEOUT
;
1884 if (attr_mask
& IB_QP_RQ_PSN
)
1885 context
->rnr_nextrecvpsn
|= cpu_to_be32(attr
->rq_psn
);
1887 /* proxy and tunnel qp qkeys will be changed in modify-qp wrappers */
1888 if (attr_mask
& IB_QP_QKEY
) {
1889 if (qp
->mlx4_ib_qp_type
&
1890 (MLX4_IB_QPT_PROXY_SMI_OWNER
| MLX4_IB_QPT_TUN_SMI_OWNER
))
1891 context
->qkey
= cpu_to_be32(IB_QP_SET_QKEY
);
1893 if (mlx4_is_mfunc(dev
->dev
) &&
1894 !(qp
->mlx4_ib_qp_type
& MLX4_IB_QPT_ANY_SRIOV
) &&
1895 (attr
->qkey
& MLX4_RESERVED_QKEY_MASK
) ==
1896 MLX4_RESERVED_QKEY_BASE
) {
1897 pr_err("Cannot use reserved QKEY"
1898 " 0x%x (range 0xffff0000..0xffffffff"
1899 " is reserved)\n", attr
->qkey
);
1903 context
->qkey
= cpu_to_be32(attr
->qkey
);
1905 optpar
|= MLX4_QP_OPTPAR_Q_KEY
;
1909 context
->srqn
= cpu_to_be32(1 << 24 | to_msrq(ibqp
->srq
)->msrq
.srqn
);
1911 if (qp
->rq
.wqe_cnt
&& cur_state
== IB_QPS_RESET
&& new_state
== IB_QPS_INIT
)
1912 context
->db_rec_addr
= cpu_to_be64(qp
->db
.dma
);
1914 if (cur_state
== IB_QPS_INIT
&&
1915 new_state
== IB_QPS_RTR
&&
1916 (ibqp
->qp_type
== IB_QPT_GSI
|| ibqp
->qp_type
== IB_QPT_SMI
||
1917 ibqp
->qp_type
== IB_QPT_UD
||
1918 ibqp
->qp_type
== IB_QPT_RAW_PACKET
)) {
1919 context
->pri_path
.sched_queue
= (qp
->port
- 1) << 6;
1920 if (qp
->mlx4_ib_qp_type
== MLX4_IB_QPT_SMI
||
1921 qp
->mlx4_ib_qp_type
&
1922 (MLX4_IB_QPT_PROXY_SMI_OWNER
| MLX4_IB_QPT_TUN_SMI_OWNER
)) {
1923 context
->pri_path
.sched_queue
|= MLX4_IB_DEFAULT_QP0_SCHED_QUEUE
;
1924 if (qp
->mlx4_ib_qp_type
!= MLX4_IB_QPT_SMI
)
1925 context
->pri_path
.fl
= 0x80;
1927 if (qp
->mlx4_ib_qp_type
& MLX4_IB_QPT_ANY_SRIOV
)
1928 context
->pri_path
.fl
= 0x80;
1929 context
->pri_path
.sched_queue
|= MLX4_IB_DEFAULT_SCHED_QUEUE
;
1931 if (rdma_port_get_link_layer(&dev
->ib_dev
, qp
->port
) ==
1932 IB_LINK_LAYER_ETHERNET
) {
1933 if (qp
->mlx4_ib_qp_type
== MLX4_IB_QPT_TUN_GSI
||
1934 qp
->mlx4_ib_qp_type
== MLX4_IB_QPT_GSI
)
1935 context
->pri_path
.feup
= 1 << 7; /* don't fsm */
1936 /* handle smac_index */
1937 if (qp
->mlx4_ib_qp_type
== MLX4_IB_QPT_UD
||
1938 qp
->mlx4_ib_qp_type
== MLX4_IB_QPT_PROXY_GSI
||
1939 qp
->mlx4_ib_qp_type
== MLX4_IB_QPT_TUN_GSI
) {
1940 err
= handle_eth_ud_smac_index(dev
, qp
, context
);
1945 if (qp
->mlx4_ib_qp_type
== MLX4_IB_QPT_PROXY_GSI
)
1946 dev
->qp1_proxy
[qp
->port
- 1] = qp
;
1951 if (qp
->ibqp
.qp_type
== IB_QPT_RAW_PACKET
) {
1952 context
->pri_path
.ackto
= (context
->pri_path
.ackto
& 0xf8) |
1953 MLX4_IB_LINK_TYPE_ETH
;
1954 if (dev
->dev
->caps
.tunnel_offload_mode
== MLX4_TUNNEL_OFFLOAD_MODE_VXLAN
) {
1955 /* set QP to receive both tunneled & non-tunneled packets */
1956 if (!(context
->flags
& cpu_to_be32(1 << MLX4_RSS_QPC_FLAG_OFFSET
)))
1957 context
->srqn
= cpu_to_be32(7 << 28);
1961 if (ibqp
->qp_type
== IB_QPT_UD
&& (new_state
== IB_QPS_RTR
)) {
1962 int is_eth
= rdma_port_get_link_layer(
1963 &dev
->ib_dev
, qp
->port
) ==
1964 IB_LINK_LAYER_ETHERNET
;
1966 context
->pri_path
.ackto
= MLX4_IB_LINK_TYPE_ETH
;
1967 optpar
|= MLX4_QP_OPTPAR_PRIMARY_ADDR_PATH
;
1972 if (cur_state
== IB_QPS_RTS
&& new_state
== IB_QPS_SQD
&&
1973 attr_mask
& IB_QP_EN_SQD_ASYNC_NOTIFY
&& attr
->en_sqd_async_notify
)
1978 if (!ibqp
->uobject
&& cur_state
== IB_QPS_RESET
&& new_state
== IB_QPS_INIT
)
1979 context
->rlkey_roce_mode
|= (1 << 4);
1982 * Before passing a kernel QP to the HW, make sure that the
1983 * ownership bits of the send queue are set and the SQ
1984 * headroom is stamped so that the hardware doesn't start
1985 * processing stale work requests.
1987 if (!ibqp
->uobject
&& cur_state
== IB_QPS_RESET
&& new_state
== IB_QPS_INIT
) {
1988 struct mlx4_wqe_ctrl_seg
*ctrl
;
1991 for (i
= 0; i
< qp
->sq
.wqe_cnt
; ++i
) {
1992 ctrl
= get_send_wqe(qp
, i
);
1993 ctrl
->owner_opcode
= cpu_to_be32(1 << 31);
1994 if (qp
->sq_max_wqes_per_wr
== 1)
1995 ctrl
->qpn_vlan
.fence_size
=
1996 1 << (qp
->sq
.wqe_shift
- 4);
1998 stamp_send_wqe(qp
, i
, 1 << qp
->sq
.wqe_shift
);
2002 err
= mlx4_qp_modify(dev
->dev
, &qp
->mtt
, to_mlx4_state(cur_state
),
2003 to_mlx4_state(new_state
), context
, optpar
,
2004 sqd_event
, &qp
->mqp
);
2008 qp
->state
= new_state
;
2010 if (attr_mask
& IB_QP_ACCESS_FLAGS
)
2011 qp
->atomic_rd_en
= attr
->qp_access_flags
;
2012 if (attr_mask
& IB_QP_MAX_DEST_RD_ATOMIC
)
2013 qp
->resp_depth
= attr
->max_dest_rd_atomic
;
2014 if (attr_mask
& IB_QP_PORT
) {
2015 qp
->port
= attr
->port_num
;
2016 update_mcg_macs(dev
, qp
);
2018 if (attr_mask
& IB_QP_ALT_PATH
)
2019 qp
->alt_port
= attr
->alt_port_num
;
2021 if (is_sqp(dev
, qp
))
2022 store_sqp_attrs(to_msqp(qp
), attr
, attr_mask
);
2025 * If we moved QP0 to RTR, bring the IB link up; if we moved
2026 * QP0 to RESET or ERROR, bring the link back down.
2028 if (is_qp0(dev
, qp
)) {
2029 if (cur_state
!= IB_QPS_RTR
&& new_state
== IB_QPS_RTR
)
2030 if (mlx4_INIT_PORT(dev
->dev
, qp
->port
))
2031 pr_warn("INIT_PORT failed for port %d\n",
2034 if (cur_state
!= IB_QPS_RESET
&& cur_state
!= IB_QPS_ERR
&&
2035 (new_state
== IB_QPS_RESET
|| new_state
== IB_QPS_ERR
))
2036 mlx4_CLOSE_PORT(dev
->dev
, qp
->port
);
2040 * If we moved a kernel QP to RESET, clean up all old CQ
2041 * entries and reinitialize the QP.
2043 if (new_state
== IB_QPS_RESET
) {
2044 if (!ibqp
->uobject
) {
2045 mlx4_ib_cq_clean(recv_cq
, qp
->mqp
.qpn
,
2046 ibqp
->srq
? to_msrq(ibqp
->srq
) : NULL
);
2047 if (send_cq
!= recv_cq
)
2048 mlx4_ib_cq_clean(send_cq
, qp
->mqp
.qpn
, NULL
);
2054 qp
->sq_next_wqe
= 0;
2058 if (qp
->flags
& MLX4_IB_QP_NETIF
)
2059 mlx4_ib_steer_qp_reg(dev
, qp
, 0);
2061 if (qp
->pri
.smac
|| (!qp
->pri
.smac
&& qp
->pri
.smac_port
)) {
2062 mlx4_unregister_mac(dev
->dev
, qp
->pri
.smac_port
, qp
->pri
.smac
);
2064 qp
->pri
.smac_port
= 0;
2067 mlx4_unregister_mac(dev
->dev
, qp
->alt
.smac_port
, qp
->alt
.smac
);
2070 if (qp
->pri
.vid
< 0x1000) {
2071 mlx4_unregister_vlan(dev
->dev
, qp
->pri
.vlan_port
, qp
->pri
.vid
);
2072 qp
->pri
.vid
= 0xFFFF;
2073 qp
->pri
.candidate_vid
= 0xFFFF;
2074 qp
->pri
.update_vid
= 0;
2077 if (qp
->alt
.vid
< 0x1000) {
2078 mlx4_unregister_vlan(dev
->dev
, qp
->alt
.vlan_port
, qp
->alt
.vid
);
2079 qp
->alt
.vid
= 0xFFFF;
2080 qp
->alt
.candidate_vid
= 0xFFFF;
2081 qp
->alt
.update_vid
= 0;
2085 if (err
&& qp
->counter_index
)
2086 mlx4_ib_free_qp_counter(dev
, qp
);
2087 if (err
&& steer_qp
)
2088 mlx4_ib_steer_qp_reg(dev
, qp
, 0);
2090 if (qp
->pri
.candidate_smac
||
2091 (!qp
->pri
.candidate_smac
&& qp
->pri
.candidate_smac_port
)) {
2093 mlx4_unregister_mac(dev
->dev
, qp
->pri
.candidate_smac_port
, qp
->pri
.candidate_smac
);
2095 if (qp
->pri
.smac
|| (!qp
->pri
.smac
&& qp
->pri
.smac_port
))
2096 mlx4_unregister_mac(dev
->dev
, qp
->pri
.smac_port
, qp
->pri
.smac
);
2097 qp
->pri
.smac
= qp
->pri
.candidate_smac
;
2098 qp
->pri
.smac_index
= qp
->pri
.candidate_smac_index
;
2099 qp
->pri
.smac_port
= qp
->pri
.candidate_smac_port
;
2101 qp
->pri
.candidate_smac
= 0;
2102 qp
->pri
.candidate_smac_index
= 0;
2103 qp
->pri
.candidate_smac_port
= 0;
2105 if (qp
->alt
.candidate_smac
) {
2107 mlx4_unregister_mac(dev
->dev
, qp
->alt
.candidate_smac_port
, qp
->alt
.candidate_smac
);
2110 mlx4_unregister_mac(dev
->dev
, qp
->alt
.smac_port
, qp
->alt
.smac
);
2111 qp
->alt
.smac
= qp
->alt
.candidate_smac
;
2112 qp
->alt
.smac_index
= qp
->alt
.candidate_smac_index
;
2113 qp
->alt
.smac_port
= qp
->alt
.candidate_smac_port
;
2115 qp
->alt
.candidate_smac
= 0;
2116 qp
->alt
.candidate_smac_index
= 0;
2117 qp
->alt
.candidate_smac_port
= 0;
2120 if (qp
->pri
.update_vid
) {
2122 if (qp
->pri
.candidate_vid
< 0x1000)
2123 mlx4_unregister_vlan(dev
->dev
, qp
->pri
.candidate_vlan_port
,
2124 qp
->pri
.candidate_vid
);
2126 if (qp
->pri
.vid
< 0x1000)
2127 mlx4_unregister_vlan(dev
->dev
, qp
->pri
.vlan_port
,
2129 qp
->pri
.vid
= qp
->pri
.candidate_vid
;
2130 qp
->pri
.vlan_port
= qp
->pri
.candidate_vlan_port
;
2131 qp
->pri
.vlan_index
= qp
->pri
.candidate_vlan_index
;
2133 qp
->pri
.candidate_vid
= 0xFFFF;
2134 qp
->pri
.update_vid
= 0;
2137 if (qp
->alt
.update_vid
) {
2139 if (qp
->alt
.candidate_vid
< 0x1000)
2140 mlx4_unregister_vlan(dev
->dev
, qp
->alt
.candidate_vlan_port
,
2141 qp
->alt
.candidate_vid
);
2143 if (qp
->alt
.vid
< 0x1000)
2144 mlx4_unregister_vlan(dev
->dev
, qp
->alt
.vlan_port
,
2146 qp
->alt
.vid
= qp
->alt
.candidate_vid
;
2147 qp
->alt
.vlan_port
= qp
->alt
.candidate_vlan_port
;
2148 qp
->alt
.vlan_index
= qp
->alt
.candidate_vlan_index
;
2150 qp
->alt
.candidate_vid
= 0xFFFF;
2151 qp
->alt
.update_vid
= 0;
2157 static int _mlx4_ib_modify_qp(struct ib_qp
*ibqp
, struct ib_qp_attr
*attr
,
2158 int attr_mask
, struct ib_udata
*udata
)
2160 struct mlx4_ib_dev
*dev
= to_mdev(ibqp
->device
);
2161 struct mlx4_ib_qp
*qp
= to_mqp(ibqp
);
2162 enum ib_qp_state cur_state
, new_state
;
2165 mutex_lock(&qp
->mutex
);
2167 cur_state
= attr_mask
& IB_QP_CUR_STATE
? attr
->cur_qp_state
: qp
->state
;
2168 new_state
= attr_mask
& IB_QP_STATE
? attr
->qp_state
: cur_state
;
2170 if (cur_state
== new_state
&& cur_state
== IB_QPS_RESET
) {
2171 ll
= IB_LINK_LAYER_UNSPECIFIED
;
2173 int port
= attr_mask
& IB_QP_PORT
? attr
->port_num
: qp
->port
;
2174 ll
= rdma_port_get_link_layer(&dev
->ib_dev
, port
);
2177 if (!ib_modify_qp_is_ok(cur_state
, new_state
, ibqp
->qp_type
,
2179 pr_debug("qpn 0x%x: invalid attribute mask specified "
2180 "for transition %d to %d. qp_type %d,"
2181 " attr_mask 0x%x\n",
2182 ibqp
->qp_num
, cur_state
, new_state
,
2183 ibqp
->qp_type
, attr_mask
);
2187 if (mlx4_is_bonded(dev
->dev
) && (attr_mask
& IB_QP_PORT
)) {
2188 if ((cur_state
== IB_QPS_RESET
) && (new_state
== IB_QPS_INIT
)) {
2189 if ((ibqp
->qp_type
== IB_QPT_RC
) ||
2190 (ibqp
->qp_type
== IB_QPT_UD
) ||
2191 (ibqp
->qp_type
== IB_QPT_UC
) ||
2192 (ibqp
->qp_type
== IB_QPT_RAW_PACKET
) ||
2193 (ibqp
->qp_type
== IB_QPT_XRC_INI
)) {
2194 attr
->port_num
= mlx4_ib_bond_next_port(dev
);
2197 /* no sense in changing port_num
2198 * when ports are bonded */
2199 attr_mask
&= ~IB_QP_PORT
;
2203 if ((attr_mask
& IB_QP_PORT
) &&
2204 (attr
->port_num
== 0 || attr
->port_num
> dev
->num_ports
)) {
2205 pr_debug("qpn 0x%x: invalid port number (%d) specified "
2206 "for transition %d to %d. qp_type %d\n",
2207 ibqp
->qp_num
, attr
->port_num
, cur_state
,
2208 new_state
, ibqp
->qp_type
);
2212 if ((attr_mask
& IB_QP_PORT
) && (ibqp
->qp_type
== IB_QPT_RAW_PACKET
) &&
2213 (rdma_port_get_link_layer(&dev
->ib_dev
, attr
->port_num
) !=
2214 IB_LINK_LAYER_ETHERNET
))
2217 if (attr_mask
& IB_QP_PKEY_INDEX
) {
2218 int p
= attr_mask
& IB_QP_PORT
? attr
->port_num
: qp
->port
;
2219 if (attr
->pkey_index
>= dev
->dev
->caps
.pkey_table_len
[p
]) {
2220 pr_debug("qpn 0x%x: invalid pkey index (%d) specified "
2221 "for transition %d to %d. qp_type %d\n",
2222 ibqp
->qp_num
, attr
->pkey_index
, cur_state
,
2223 new_state
, ibqp
->qp_type
);
2228 if (attr_mask
& IB_QP_MAX_QP_RD_ATOMIC
&&
2229 attr
->max_rd_atomic
> dev
->dev
->caps
.max_qp_init_rdma
) {
2230 pr_debug("qpn 0x%x: max_rd_atomic (%d) too large. "
2231 "Transition %d to %d. qp_type %d\n",
2232 ibqp
->qp_num
, attr
->max_rd_atomic
, cur_state
,
2233 new_state
, ibqp
->qp_type
);
2237 if (attr_mask
& IB_QP_MAX_DEST_RD_ATOMIC
&&
2238 attr
->max_dest_rd_atomic
> dev
->dev
->caps
.max_qp_dest_rdma
) {
2239 pr_debug("qpn 0x%x: max_dest_rd_atomic (%d) too large. "
2240 "Transition %d to %d. qp_type %d\n",
2241 ibqp
->qp_num
, attr
->max_dest_rd_atomic
, cur_state
,
2242 new_state
, ibqp
->qp_type
);
2246 if (cur_state
== new_state
&& cur_state
== IB_QPS_RESET
) {
2251 err
= __mlx4_ib_modify_qp(ibqp
, attr
, attr_mask
, cur_state
, new_state
);
2253 if (mlx4_is_bonded(dev
->dev
) && (attr_mask
& IB_QP_PORT
))
2257 mutex_unlock(&qp
->mutex
);
2261 int mlx4_ib_modify_qp(struct ib_qp
*ibqp
, struct ib_qp_attr
*attr
,
2262 int attr_mask
, struct ib_udata
*udata
)
2264 struct mlx4_ib_qp
*mqp
= to_mqp(ibqp
);
2267 ret
= _mlx4_ib_modify_qp(ibqp
, attr
, attr_mask
, udata
);
2269 if (mqp
->mlx4_ib_qp_type
== MLX4_IB_QPT_GSI
) {
2270 struct mlx4_ib_sqp
*sqp
= to_msqp(mqp
);
2273 if (sqp
->roce_v2_gsi
)
2274 err
= ib_modify_qp(sqp
->roce_v2_gsi
, attr
, attr_mask
);
2276 pr_err("Failed to modify GSI QP for RoCEv2 (%d)\n",
2282 static int vf_get_qp0_qkey(struct mlx4_dev
*dev
, int qpn
, u32
*qkey
)
2285 for (i
= 0; i
< dev
->caps
.num_ports
; i
++) {
2286 if (qpn
== dev
->caps
.qp0_proxy
[i
] ||
2287 qpn
== dev
->caps
.qp0_tunnel
[i
]) {
2288 *qkey
= dev
->caps
.qp0_qkey
[i
];
2295 static int build_sriov_qp0_header(struct mlx4_ib_sqp
*sqp
,
2296 struct ib_ud_wr
*wr
,
2297 void *wqe
, unsigned *mlx_seg_len
)
2299 struct mlx4_ib_dev
*mdev
= to_mdev(sqp
->qp
.ibqp
.device
);
2300 struct ib_device
*ib_dev
= &mdev
->ib_dev
;
2301 struct mlx4_wqe_mlx_seg
*mlx
= wqe
;
2302 struct mlx4_wqe_inline_seg
*inl
= wqe
+ sizeof *mlx
;
2303 struct mlx4_ib_ah
*ah
= to_mah(wr
->ah
);
2311 if (wr
->wr
.opcode
!= IB_WR_SEND
)
2316 for (i
= 0; i
< wr
->wr
.num_sge
; ++i
)
2317 send_size
+= wr
->wr
.sg_list
[i
].length
;
2319 /* for proxy-qp0 sends, need to add in size of tunnel header */
2320 /* for tunnel-qp0 sends, tunnel header is already in s/g list */
2321 if (sqp
->qp
.mlx4_ib_qp_type
== MLX4_IB_QPT_PROXY_SMI_OWNER
)
2322 send_size
+= sizeof (struct mlx4_ib_tunnel_header
);
2324 ib_ud_header_init(send_size
, 1, 0, 0, 0, 0, 0, 0, &sqp
->ud_header
);
2326 if (sqp
->qp
.mlx4_ib_qp_type
== MLX4_IB_QPT_PROXY_SMI_OWNER
) {
2327 sqp
->ud_header
.lrh
.service_level
=
2328 be32_to_cpu(ah
->av
.ib
.sl_tclass_flowlabel
) >> 28;
2329 sqp
->ud_header
.lrh
.destination_lid
=
2330 cpu_to_be16(ah
->av
.ib
.g_slid
& 0x7f);
2331 sqp
->ud_header
.lrh
.source_lid
=
2332 cpu_to_be16(ah
->av
.ib
.g_slid
& 0x7f);
2335 mlx
->flags
&= cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE
);
2337 /* force loopback */
2338 mlx
->flags
|= cpu_to_be32(MLX4_WQE_MLX_VL15
| 0x1 | MLX4_WQE_MLX_SLR
);
2339 mlx
->rlid
= sqp
->ud_header
.lrh
.destination_lid
;
2341 sqp
->ud_header
.lrh
.virtual_lane
= 0;
2342 sqp
->ud_header
.bth
.solicited_event
= !!(wr
->wr
.send_flags
& IB_SEND_SOLICITED
);
2343 ib_get_cached_pkey(ib_dev
, sqp
->qp
.port
, 0, &pkey
);
2344 sqp
->ud_header
.bth
.pkey
= cpu_to_be16(pkey
);
2345 if (sqp
->qp
.mlx4_ib_qp_type
== MLX4_IB_QPT_TUN_SMI_OWNER
)
2346 sqp
->ud_header
.bth
.destination_qpn
= cpu_to_be32(wr
->remote_qpn
);
2348 sqp
->ud_header
.bth
.destination_qpn
=
2349 cpu_to_be32(mdev
->dev
->caps
.qp0_tunnel
[sqp
->qp
.port
- 1]);
2351 sqp
->ud_header
.bth
.psn
= cpu_to_be32((sqp
->send_psn
++) & ((1 << 24) - 1));
2352 if (mlx4_is_master(mdev
->dev
)) {
2353 if (mlx4_get_parav_qkey(mdev
->dev
, sqp
->qp
.mqp
.qpn
, &qkey
))
2356 if (vf_get_qp0_qkey(mdev
->dev
, sqp
->qp
.mqp
.qpn
, &qkey
))
2359 sqp
->ud_header
.deth
.qkey
= cpu_to_be32(qkey
);
2360 sqp
->ud_header
.deth
.source_qpn
= cpu_to_be32(sqp
->qp
.mqp
.qpn
);
2362 sqp
->ud_header
.bth
.opcode
= IB_OPCODE_UD_SEND_ONLY
;
2363 sqp
->ud_header
.immediate_present
= 0;
2365 header_size
= ib_ud_header_pack(&sqp
->ud_header
, sqp
->header_buf
);
2368 * Inline data segments may not cross a 64 byte boundary. If
2369 * our UD header is bigger than the space available up to the
2370 * next 64 byte boundary in the WQE, use two inline data
2371 * segments to hold the UD header.
2373 spc
= MLX4_INLINE_ALIGN
-
2374 ((unsigned long) (inl
+ 1) & (MLX4_INLINE_ALIGN
- 1));
2375 if (header_size
<= spc
) {
2376 inl
->byte_count
= cpu_to_be32(1 << 31 | header_size
);
2377 memcpy(inl
+ 1, sqp
->header_buf
, header_size
);
2380 inl
->byte_count
= cpu_to_be32(1 << 31 | spc
);
2381 memcpy(inl
+ 1, sqp
->header_buf
, spc
);
2383 inl
= (void *) (inl
+ 1) + spc
;
2384 memcpy(inl
+ 1, sqp
->header_buf
+ spc
, header_size
- spc
);
2386 * Need a barrier here to make sure all the data is
2387 * visible before the byte_count field is set.
2388 * Otherwise the HCA prefetcher could grab the 64-byte
2389 * chunk with this inline segment and get a valid (!=
2390 * 0xffffffff) byte count but stale data, and end up
2391 * generating a packet with bad headers.
2393 * The first inline segment's byte_count field doesn't
2394 * need a barrier, because it comes after a
2395 * control/MLX segment and therefore is at an offset
2399 inl
->byte_count
= cpu_to_be32(1 << 31 | (header_size
- spc
));
2404 ALIGN(i
* sizeof (struct mlx4_wqe_inline_seg
) + header_size
, 16);
2408 static u8
sl_to_vl(struct mlx4_ib_dev
*dev
, u8 sl
, int port_num
)
2410 union sl2vl_tbl_to_u64 tmp_vltab
;
2415 tmp_vltab
.sl64
= atomic64_read(&dev
->sl2vl
[port_num
- 1]);
2416 vl
= tmp_vltab
.sl8
[sl
>> 1];
2424 #define MLX4_ROCEV2_QP1_SPORT 0xC000
2425 static int build_mlx_header(struct mlx4_ib_sqp
*sqp
, struct ib_ud_wr
*wr
,
2426 void *wqe
, unsigned *mlx_seg_len
)
2428 struct ib_device
*ib_dev
= sqp
->qp
.ibqp
.device
;
2429 struct mlx4_wqe_mlx_seg
*mlx
= wqe
;
2430 struct mlx4_wqe_ctrl_seg
*ctrl
= wqe
;
2431 struct mlx4_wqe_inline_seg
*inl
= wqe
+ sizeof *mlx
;
2432 struct mlx4_ib_ah
*ah
= to_mah(wr
->ah
);
2442 bool is_vlan
= false;
2444 bool is_udp
= false;
2448 for (i
= 0; i
< wr
->wr
.num_sge
; ++i
)
2449 send_size
+= wr
->wr
.sg_list
[i
].length
;
2451 is_eth
= rdma_port_get_link_layer(sqp
->qp
.ibqp
.device
, sqp
->qp
.port
) == IB_LINK_LAYER_ETHERNET
;
2452 is_grh
= mlx4_ib_ah_grh_present(ah
);
2454 struct ib_gid_attr gid_attr
;
2456 if (mlx4_is_mfunc(to_mdev(ib_dev
)->dev
)) {
2457 /* When multi-function is enabled, the ib_core gid
2458 * indexes don't necessarily match the hw ones, so
2459 * we must use our own cache */
2460 err
= mlx4_get_roce_gid_from_slave(to_mdev(ib_dev
)->dev
,
2461 be32_to_cpu(ah
->av
.ib
.port_pd
) >> 24,
2462 ah
->av
.ib
.gid_index
, &sgid
.raw
[0]);
2466 err
= ib_get_cached_gid(ib_dev
,
2467 be32_to_cpu(ah
->av
.ib
.port_pd
) >> 24,
2468 ah
->av
.ib
.gid_index
, &sgid
,
2472 dev_put(gid_attr
.ndev
);
2473 if (!memcmp(&sgid
, &zgid
, sizeof(sgid
)))
2477 is_udp
= gid_attr
.gid_type
== IB_GID_TYPE_ROCE_UDP_ENCAP
;
2479 if (ipv6_addr_v4mapped((struct in6_addr
*)&sgid
))
2489 if (ah
->av
.eth
.vlan
!= cpu_to_be16(0xffff)) {
2490 vlan
= be16_to_cpu(ah
->av
.eth
.vlan
) & 0x0fff;
2494 err
= ib_ud_header_init(send_size
, !is_eth
, is_eth
, is_vlan
, is_grh
,
2495 ip_version
, is_udp
, 0, &sqp
->ud_header
);
2500 sqp
->ud_header
.lrh
.service_level
=
2501 be32_to_cpu(ah
->av
.ib
.sl_tclass_flowlabel
) >> 28;
2502 sqp
->ud_header
.lrh
.destination_lid
= ah
->av
.ib
.dlid
;
2503 sqp
->ud_header
.lrh
.source_lid
= cpu_to_be16(ah
->av
.ib
.g_slid
& 0x7f);
2506 if (is_grh
|| (ip_version
== 6)) {
2507 sqp
->ud_header
.grh
.traffic_class
=
2508 (be32_to_cpu(ah
->av
.ib
.sl_tclass_flowlabel
) >> 20) & 0xff;
2509 sqp
->ud_header
.grh
.flow_label
=
2510 ah
->av
.ib
.sl_tclass_flowlabel
& cpu_to_be32(0xfffff);
2511 sqp
->ud_header
.grh
.hop_limit
= ah
->av
.ib
.hop_limit
;
2513 memcpy(sqp
->ud_header
.grh
.source_gid
.raw
, sgid
.raw
, 16);
2515 if (mlx4_is_mfunc(to_mdev(ib_dev
)->dev
)) {
2516 /* When multi-function is enabled, the ib_core gid
2517 * indexes don't necessarily match the hw ones, so
2518 * we must use our own cache
2520 sqp
->ud_header
.grh
.source_gid
.global
.subnet_prefix
=
2521 cpu_to_be64(atomic64_read(&(to_mdev(ib_dev
)->sriov
.
2522 demux
[sqp
->qp
.port
- 1].
2524 sqp
->ud_header
.grh
.source_gid
.global
.interface_id
=
2525 to_mdev(ib_dev
)->sriov
.demux
[sqp
->qp
.port
- 1].
2526 guid_cache
[ah
->av
.ib
.gid_index
];
2528 ib_get_cached_gid(ib_dev
,
2529 be32_to_cpu(ah
->av
.ib
.port_pd
) >> 24,
2530 ah
->av
.ib
.gid_index
,
2531 &sqp
->ud_header
.grh
.source_gid
, NULL
);
2534 memcpy(sqp
->ud_header
.grh
.destination_gid
.raw
,
2535 ah
->av
.ib
.dgid
, 16);
2538 if (ip_version
== 4) {
2539 sqp
->ud_header
.ip4
.tos
=
2540 (be32_to_cpu(ah
->av
.ib
.sl_tclass_flowlabel
) >> 20) & 0xff;
2541 sqp
->ud_header
.ip4
.id
= 0;
2542 sqp
->ud_header
.ip4
.frag_off
= htons(IP_DF
);
2543 sqp
->ud_header
.ip4
.ttl
= ah
->av
.eth
.hop_limit
;
2545 memcpy(&sqp
->ud_header
.ip4
.saddr
,
2547 memcpy(&sqp
->ud_header
.ip4
.daddr
, ah
->av
.ib
.dgid
+ 12, 4);
2548 sqp
->ud_header
.ip4
.check
= ib_ud_ip4_csum(&sqp
->ud_header
);
2552 sqp
->ud_header
.udp
.dport
= htons(ROCE_V2_UDP_DPORT
);
2553 sqp
->ud_header
.udp
.sport
= htons(MLX4_ROCEV2_QP1_SPORT
);
2554 sqp
->ud_header
.udp
.csum
= 0;
2557 mlx
->flags
&= cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE
);
2560 mlx
->flags
|= cpu_to_be32((!sqp
->qp
.ibqp
.qp_num
? MLX4_WQE_MLX_VL15
: 0) |
2561 (sqp
->ud_header
.lrh
.destination_lid
==
2562 IB_LID_PERMISSIVE
? MLX4_WQE_MLX_SLR
: 0) |
2563 (sqp
->ud_header
.lrh
.service_level
<< 8));
2564 if (ah
->av
.ib
.port_pd
& cpu_to_be32(0x80000000))
2565 mlx
->flags
|= cpu_to_be32(0x1); /* force loopback */
2566 mlx
->rlid
= sqp
->ud_header
.lrh
.destination_lid
;
2569 switch (wr
->wr
.opcode
) {
2571 sqp
->ud_header
.bth
.opcode
= IB_OPCODE_UD_SEND_ONLY
;
2572 sqp
->ud_header
.immediate_present
= 0;
2574 case IB_WR_SEND_WITH_IMM
:
2575 sqp
->ud_header
.bth
.opcode
= IB_OPCODE_UD_SEND_ONLY_WITH_IMMEDIATE
;
2576 sqp
->ud_header
.immediate_present
= 1;
2577 sqp
->ud_header
.immediate_data
= wr
->wr
.ex
.imm_data
;
2584 struct in6_addr in6
;
2586 u16 pcp
= (be32_to_cpu(ah
->av
.ib
.sl_tclass_flowlabel
) >> 29) << 13;
2588 ether_type
= (!is_udp
) ? MLX4_IB_IBOE_ETHERTYPE
:
2589 (ip_version
== 4 ? ETH_P_IP
: ETH_P_IPV6
);
2591 mlx
->sched_prio
= cpu_to_be16(pcp
);
2593 ether_addr_copy(sqp
->ud_header
.eth
.smac_h
, ah
->av
.eth
.s_mac
);
2594 memcpy(sqp
->ud_header
.eth
.dmac_h
, ah
->av
.eth
.mac
, 6);
2595 memcpy(&ctrl
->srcrb_flags16
[0], ah
->av
.eth
.mac
, 2);
2596 memcpy(&ctrl
->imm
, ah
->av
.eth
.mac
+ 2, 4);
2597 memcpy(&in6
, sgid
.raw
, sizeof(in6
));
2600 if (!memcmp(sqp
->ud_header
.eth
.smac_h
, sqp
->ud_header
.eth
.dmac_h
, 6))
2601 mlx
->flags
|= cpu_to_be32(MLX4_WQE_CTRL_FORCE_LOOPBACK
);
2603 sqp
->ud_header
.eth
.type
= cpu_to_be16(ether_type
);
2605 sqp
->ud_header
.vlan
.type
= cpu_to_be16(ether_type
);
2606 sqp
->ud_header
.vlan
.tag
= cpu_to_be16(vlan
| pcp
);
2609 sqp
->ud_header
.lrh
.virtual_lane
= !sqp
->qp
.ibqp
.qp_num
? 15 :
2610 sl_to_vl(to_mdev(ib_dev
),
2611 sqp
->ud_header
.lrh
.service_level
,
2613 if (sqp
->qp
.ibqp
.qp_num
&& sqp
->ud_header
.lrh
.virtual_lane
== 15)
2615 if (sqp
->ud_header
.lrh
.destination_lid
== IB_LID_PERMISSIVE
)
2616 sqp
->ud_header
.lrh
.source_lid
= IB_LID_PERMISSIVE
;
2618 sqp
->ud_header
.bth
.solicited_event
= !!(wr
->wr
.send_flags
& IB_SEND_SOLICITED
);
2619 if (!sqp
->qp
.ibqp
.qp_num
)
2620 ib_get_cached_pkey(ib_dev
, sqp
->qp
.port
, sqp
->pkey_index
, &pkey
);
2622 ib_get_cached_pkey(ib_dev
, sqp
->qp
.port
, wr
->pkey_index
, &pkey
);
2623 sqp
->ud_header
.bth
.pkey
= cpu_to_be16(pkey
);
2624 sqp
->ud_header
.bth
.destination_qpn
= cpu_to_be32(wr
->remote_qpn
);
2625 sqp
->ud_header
.bth
.psn
= cpu_to_be32((sqp
->send_psn
++) & ((1 << 24) - 1));
2626 sqp
->ud_header
.deth
.qkey
= cpu_to_be32(wr
->remote_qkey
& 0x80000000 ?
2627 sqp
->qkey
: wr
->remote_qkey
);
2628 sqp
->ud_header
.deth
.source_qpn
= cpu_to_be32(sqp
->qp
.ibqp
.qp_num
);
2630 header_size
= ib_ud_header_pack(&sqp
->ud_header
, sqp
->header_buf
);
2633 pr_err("built UD header of size %d:\n", header_size
);
2634 for (i
= 0; i
< header_size
/ 4; ++i
) {
2636 pr_err(" [%02x] ", i
* 4);
2638 be32_to_cpu(((__be32
*) sqp
->header_buf
)[i
]));
2639 if ((i
+ 1) % 8 == 0)
2646 * Inline data segments may not cross a 64 byte boundary. If
2647 * our UD header is bigger than the space available up to the
2648 * next 64 byte boundary in the WQE, use two inline data
2649 * segments to hold the UD header.
2651 spc
= MLX4_INLINE_ALIGN
-
2652 ((unsigned long) (inl
+ 1) & (MLX4_INLINE_ALIGN
- 1));
2653 if (header_size
<= spc
) {
2654 inl
->byte_count
= cpu_to_be32(1 << 31 | header_size
);
2655 memcpy(inl
+ 1, sqp
->header_buf
, header_size
);
2658 inl
->byte_count
= cpu_to_be32(1 << 31 | spc
);
2659 memcpy(inl
+ 1, sqp
->header_buf
, spc
);
2661 inl
= (void *) (inl
+ 1) + spc
;
2662 memcpy(inl
+ 1, sqp
->header_buf
+ spc
, header_size
- spc
);
2664 * Need a barrier here to make sure all the data is
2665 * visible before the byte_count field is set.
2666 * Otherwise the HCA prefetcher could grab the 64-byte
2667 * chunk with this inline segment and get a valid (!=
2668 * 0xffffffff) byte count but stale data, and end up
2669 * generating a packet with bad headers.
2671 * The first inline segment's byte_count field doesn't
2672 * need a barrier, because it comes after a
2673 * control/MLX segment and therefore is at an offset
2677 inl
->byte_count
= cpu_to_be32(1 << 31 | (header_size
- spc
));
2682 ALIGN(i
* sizeof (struct mlx4_wqe_inline_seg
) + header_size
, 16);
2686 static int mlx4_wq_overflow(struct mlx4_ib_wq
*wq
, int nreq
, struct ib_cq
*ib_cq
)
2689 struct mlx4_ib_cq
*cq
;
2691 cur
= wq
->head
- wq
->tail
;
2692 if (likely(cur
+ nreq
< wq
->max_post
))
2696 spin_lock(&cq
->lock
);
2697 cur
= wq
->head
- wq
->tail
;
2698 spin_unlock(&cq
->lock
);
2700 return cur
+ nreq
>= wq
->max_post
;
2703 static __be32
convert_access(int acc
)
2705 return (acc
& IB_ACCESS_REMOTE_ATOMIC
?
2706 cpu_to_be32(MLX4_WQE_FMR_AND_BIND_PERM_ATOMIC
) : 0) |
2707 (acc
& IB_ACCESS_REMOTE_WRITE
?
2708 cpu_to_be32(MLX4_WQE_FMR_AND_BIND_PERM_REMOTE_WRITE
) : 0) |
2709 (acc
& IB_ACCESS_REMOTE_READ
?
2710 cpu_to_be32(MLX4_WQE_FMR_AND_BIND_PERM_REMOTE_READ
) : 0) |
2711 (acc
& IB_ACCESS_LOCAL_WRITE
? cpu_to_be32(MLX4_WQE_FMR_PERM_LOCAL_WRITE
) : 0) |
2712 cpu_to_be32(MLX4_WQE_FMR_PERM_LOCAL_READ
);
2715 static void set_reg_seg(struct mlx4_wqe_fmr_seg
*fseg
,
2716 struct ib_reg_wr
*wr
)
2718 struct mlx4_ib_mr
*mr
= to_mmr(wr
->mr
);
2720 fseg
->flags
= convert_access(wr
->access
);
2721 fseg
->mem_key
= cpu_to_be32(wr
->key
);
2722 fseg
->buf_list
= cpu_to_be64(mr
->page_map
);
2723 fseg
->start_addr
= cpu_to_be64(mr
->ibmr
.iova
);
2724 fseg
->reg_len
= cpu_to_be64(mr
->ibmr
.length
);
2725 fseg
->offset
= 0; /* XXX -- is this just for ZBVA? */
2726 fseg
->page_size
= cpu_to_be32(ilog2(mr
->ibmr
.page_size
));
2727 fseg
->reserved
[0] = 0;
2728 fseg
->reserved
[1] = 0;
2731 static void set_local_inv_seg(struct mlx4_wqe_local_inval_seg
*iseg
, u32 rkey
)
2733 memset(iseg
, 0, sizeof(*iseg
));
2734 iseg
->mem_key
= cpu_to_be32(rkey
);
2737 static __always_inline
void set_raddr_seg(struct mlx4_wqe_raddr_seg
*rseg
,
2738 u64 remote_addr
, u32 rkey
)
2740 rseg
->raddr
= cpu_to_be64(remote_addr
);
2741 rseg
->rkey
= cpu_to_be32(rkey
);
2745 static void set_atomic_seg(struct mlx4_wqe_atomic_seg
*aseg
,
2746 struct ib_atomic_wr
*wr
)
2748 if (wr
->wr
.opcode
== IB_WR_ATOMIC_CMP_AND_SWP
) {
2749 aseg
->swap_add
= cpu_to_be64(wr
->swap
);
2750 aseg
->compare
= cpu_to_be64(wr
->compare_add
);
2751 } else if (wr
->wr
.opcode
== IB_WR_MASKED_ATOMIC_FETCH_AND_ADD
) {
2752 aseg
->swap_add
= cpu_to_be64(wr
->compare_add
);
2753 aseg
->compare
= cpu_to_be64(wr
->compare_add_mask
);
2755 aseg
->swap_add
= cpu_to_be64(wr
->compare_add
);
2761 static void set_masked_atomic_seg(struct mlx4_wqe_masked_atomic_seg
*aseg
,
2762 struct ib_atomic_wr
*wr
)
2764 aseg
->swap_add
= cpu_to_be64(wr
->swap
);
2765 aseg
->swap_add_mask
= cpu_to_be64(wr
->swap_mask
);
2766 aseg
->compare
= cpu_to_be64(wr
->compare_add
);
2767 aseg
->compare_mask
= cpu_to_be64(wr
->compare_add_mask
);
2770 static void set_datagram_seg(struct mlx4_wqe_datagram_seg
*dseg
,
2771 struct ib_ud_wr
*wr
)
2773 memcpy(dseg
->av
, &to_mah(wr
->ah
)->av
, sizeof (struct mlx4_av
));
2774 dseg
->dqpn
= cpu_to_be32(wr
->remote_qpn
);
2775 dseg
->qkey
= cpu_to_be32(wr
->remote_qkey
);
2776 dseg
->vlan
= to_mah(wr
->ah
)->av
.eth
.vlan
;
2777 memcpy(dseg
->mac
, to_mah(wr
->ah
)->av
.eth
.mac
, 6);
2780 static void set_tunnel_datagram_seg(struct mlx4_ib_dev
*dev
,
2781 struct mlx4_wqe_datagram_seg
*dseg
,
2782 struct ib_ud_wr
*wr
,
2783 enum mlx4_ib_qp_type qpt
)
2785 union mlx4_ext_av
*av
= &to_mah(wr
->ah
)->av
;
2786 struct mlx4_av sqp_av
= {0};
2787 int port
= *((u8
*) &av
->ib
.port_pd
) & 0x3;
2789 /* force loopback */
2790 sqp_av
.port_pd
= av
->ib
.port_pd
| cpu_to_be32(0x80000000);
2791 sqp_av
.g_slid
= av
->ib
.g_slid
& 0x7f; /* no GRH */
2792 sqp_av
.sl_tclass_flowlabel
= av
->ib
.sl_tclass_flowlabel
&
2793 cpu_to_be32(0xf0000000);
2795 memcpy(dseg
->av
, &sqp_av
, sizeof (struct mlx4_av
));
2796 if (qpt
== MLX4_IB_QPT_PROXY_GSI
)
2797 dseg
->dqpn
= cpu_to_be32(dev
->dev
->caps
.qp1_tunnel
[port
- 1]);
2799 dseg
->dqpn
= cpu_to_be32(dev
->dev
->caps
.qp0_tunnel
[port
- 1]);
2800 /* Use QKEY from the QP context, which is set by master */
2801 dseg
->qkey
= cpu_to_be32(IB_QP_SET_QKEY
);
2804 static void build_tunnel_header(struct ib_ud_wr
*wr
, void *wqe
, unsigned *mlx_seg_len
)
2806 struct mlx4_wqe_inline_seg
*inl
= wqe
;
2807 struct mlx4_ib_tunnel_header hdr
;
2808 struct mlx4_ib_ah
*ah
= to_mah(wr
->ah
);
2812 memcpy(&hdr
.av
, &ah
->av
, sizeof hdr
.av
);
2813 hdr
.remote_qpn
= cpu_to_be32(wr
->remote_qpn
);
2814 hdr
.pkey_index
= cpu_to_be16(wr
->pkey_index
);
2815 hdr
.qkey
= cpu_to_be32(wr
->remote_qkey
);
2816 memcpy(hdr
.mac
, ah
->av
.eth
.mac
, 6);
2817 hdr
.vlan
= ah
->av
.eth
.vlan
;
2819 spc
= MLX4_INLINE_ALIGN
-
2820 ((unsigned long) (inl
+ 1) & (MLX4_INLINE_ALIGN
- 1));
2821 if (sizeof (hdr
) <= spc
) {
2822 memcpy(inl
+ 1, &hdr
, sizeof (hdr
));
2824 inl
->byte_count
= cpu_to_be32(1 << 31 | sizeof (hdr
));
2827 memcpy(inl
+ 1, &hdr
, spc
);
2829 inl
->byte_count
= cpu_to_be32(1 << 31 | spc
);
2831 inl
= (void *) (inl
+ 1) + spc
;
2832 memcpy(inl
+ 1, (void *) &hdr
+ spc
, sizeof (hdr
) - spc
);
2834 inl
->byte_count
= cpu_to_be32(1 << 31 | (sizeof (hdr
) - spc
));
2839 ALIGN(i
* sizeof (struct mlx4_wqe_inline_seg
) + sizeof (hdr
), 16);
2842 static void set_mlx_icrc_seg(void *dseg
)
2845 struct mlx4_wqe_inline_seg
*iseg
= dseg
;
2850 * Need a barrier here before writing the byte_count field to
2851 * make sure that all the data is visible before the
2852 * byte_count field is set. Otherwise, if the segment begins
2853 * a new cacheline, the HCA prefetcher could grab the 64-byte
2854 * chunk and get a valid (!= * 0xffffffff) byte count but
2855 * stale data, and end up sending the wrong data.
2859 iseg
->byte_count
= cpu_to_be32((1 << 31) | 4);
2862 static void set_data_seg(struct mlx4_wqe_data_seg
*dseg
, struct ib_sge
*sg
)
2864 dseg
->lkey
= cpu_to_be32(sg
->lkey
);
2865 dseg
->addr
= cpu_to_be64(sg
->addr
);
2868 * Need a barrier here before writing the byte_count field to
2869 * make sure that all the data is visible before the
2870 * byte_count field is set. Otherwise, if the segment begins
2871 * a new cacheline, the HCA prefetcher could grab the 64-byte
2872 * chunk and get a valid (!= * 0xffffffff) byte count but
2873 * stale data, and end up sending the wrong data.
2877 dseg
->byte_count
= cpu_to_be32(sg
->length
);
2880 static void __set_data_seg(struct mlx4_wqe_data_seg
*dseg
, struct ib_sge
*sg
)
2882 dseg
->byte_count
= cpu_to_be32(sg
->length
);
2883 dseg
->lkey
= cpu_to_be32(sg
->lkey
);
2884 dseg
->addr
= cpu_to_be64(sg
->addr
);
2887 static int build_lso_seg(struct mlx4_wqe_lso_seg
*wqe
, struct ib_ud_wr
*wr
,
2888 struct mlx4_ib_qp
*qp
, unsigned *lso_seg_len
,
2889 __be32
*lso_hdr_sz
, __be32
*blh
)
2891 unsigned halign
= ALIGN(sizeof *wqe
+ wr
->hlen
, 16);
2893 if (unlikely(halign
> MLX4_IB_CACHE_LINE_SIZE
))
2894 *blh
= cpu_to_be32(1 << 6);
2896 if (unlikely(!(qp
->flags
& MLX4_IB_QP_LSO
) &&
2897 wr
->wr
.num_sge
> qp
->sq
.max_gs
- (halign
>> 4)))
2900 memcpy(wqe
->header
, wr
->header
, wr
->hlen
);
2902 *lso_hdr_sz
= cpu_to_be32(wr
->mss
<< 16 | wr
->hlen
);
2903 *lso_seg_len
= halign
;
2907 static __be32
send_ieth(struct ib_send_wr
*wr
)
2909 switch (wr
->opcode
) {
2910 case IB_WR_SEND_WITH_IMM
:
2911 case IB_WR_RDMA_WRITE_WITH_IMM
:
2912 return wr
->ex
.imm_data
;
2914 case IB_WR_SEND_WITH_INV
:
2915 return cpu_to_be32(wr
->ex
.invalidate_rkey
);
2922 static void add_zero_len_inline(void *wqe
)
2924 struct mlx4_wqe_inline_seg
*inl
= wqe
;
2926 inl
->byte_count
= cpu_to_be32(1 << 31);
2929 int mlx4_ib_post_send(struct ib_qp
*ibqp
, struct ib_send_wr
*wr
,
2930 struct ib_send_wr
**bad_wr
)
2932 struct mlx4_ib_qp
*qp
= to_mqp(ibqp
);
2934 struct mlx4_wqe_ctrl_seg
*ctrl
;
2935 struct mlx4_wqe_data_seg
*dseg
;
2936 unsigned long flags
;
2940 int uninitialized_var(stamp
);
2941 int uninitialized_var(size
);
2942 unsigned uninitialized_var(seglen
);
2945 __be32
uninitialized_var(lso_hdr_sz
);
2948 struct mlx4_ib_dev
*mdev
= to_mdev(ibqp
->device
);
2950 if (qp
->mlx4_ib_qp_type
== MLX4_IB_QPT_GSI
) {
2951 struct mlx4_ib_sqp
*sqp
= to_msqp(qp
);
2953 if (sqp
->roce_v2_gsi
) {
2954 struct mlx4_ib_ah
*ah
= to_mah(ud_wr(wr
)->ah
);
2955 struct ib_gid_attr gid_attr
;
2958 if (!ib_get_cached_gid(ibqp
->device
,
2959 be32_to_cpu(ah
->av
.ib
.port_pd
) >> 24,
2960 ah
->av
.ib
.gid_index
, &gid
,
2963 dev_put(gid_attr
.ndev
);
2964 qp
= (gid_attr
.gid_type
== IB_GID_TYPE_ROCE_UDP_ENCAP
) ?
2965 to_mqp(sqp
->roce_v2_gsi
) : qp
;
2967 pr_err("Failed to get gid at index %d. RoCEv2 will not work properly\n",
2968 ah
->av
.ib
.gid_index
);
2973 spin_lock_irqsave(&qp
->sq
.lock
, flags
);
2974 if (mdev
->dev
->persist
->state
& MLX4_DEVICE_STATE_INTERNAL_ERROR
) {
2981 ind
= qp
->sq_next_wqe
;
2983 for (nreq
= 0; wr
; ++nreq
, wr
= wr
->next
) {
2987 if (mlx4_wq_overflow(&qp
->sq
, nreq
, qp
->ibqp
.send_cq
)) {
2993 if (unlikely(wr
->num_sge
> qp
->sq
.max_gs
)) {
2999 ctrl
= wqe
= get_send_wqe(qp
, ind
& (qp
->sq
.wqe_cnt
- 1));
3000 qp
->sq
.wrid
[(qp
->sq
.head
+ nreq
) & (qp
->sq
.wqe_cnt
- 1)] = wr
->wr_id
;
3003 (wr
->send_flags
& IB_SEND_SIGNALED
?
3004 cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE
) : 0) |
3005 (wr
->send_flags
& IB_SEND_SOLICITED
?
3006 cpu_to_be32(MLX4_WQE_CTRL_SOLICITED
) : 0) |
3007 ((wr
->send_flags
& IB_SEND_IP_CSUM
) ?
3008 cpu_to_be32(MLX4_WQE_CTRL_IP_CSUM
|
3009 MLX4_WQE_CTRL_TCP_UDP_CSUM
) : 0) |
3012 ctrl
->imm
= send_ieth(wr
);
3014 wqe
+= sizeof *ctrl
;
3015 size
= sizeof *ctrl
/ 16;
3017 switch (qp
->mlx4_ib_qp_type
) {
3018 case MLX4_IB_QPT_RC
:
3019 case MLX4_IB_QPT_UC
:
3020 switch (wr
->opcode
) {
3021 case IB_WR_ATOMIC_CMP_AND_SWP
:
3022 case IB_WR_ATOMIC_FETCH_AND_ADD
:
3023 case IB_WR_MASKED_ATOMIC_FETCH_AND_ADD
:
3024 set_raddr_seg(wqe
, atomic_wr(wr
)->remote_addr
,
3025 atomic_wr(wr
)->rkey
);
3026 wqe
+= sizeof (struct mlx4_wqe_raddr_seg
);
3028 set_atomic_seg(wqe
, atomic_wr(wr
));
3029 wqe
+= sizeof (struct mlx4_wqe_atomic_seg
);
3031 size
+= (sizeof (struct mlx4_wqe_raddr_seg
) +
3032 sizeof (struct mlx4_wqe_atomic_seg
)) / 16;
3036 case IB_WR_MASKED_ATOMIC_CMP_AND_SWP
:
3037 set_raddr_seg(wqe
, atomic_wr(wr
)->remote_addr
,
3038 atomic_wr(wr
)->rkey
);
3039 wqe
+= sizeof (struct mlx4_wqe_raddr_seg
);
3041 set_masked_atomic_seg(wqe
, atomic_wr(wr
));
3042 wqe
+= sizeof (struct mlx4_wqe_masked_atomic_seg
);
3044 size
+= (sizeof (struct mlx4_wqe_raddr_seg
) +
3045 sizeof (struct mlx4_wqe_masked_atomic_seg
)) / 16;
3049 case IB_WR_RDMA_READ
:
3050 case IB_WR_RDMA_WRITE
:
3051 case IB_WR_RDMA_WRITE_WITH_IMM
:
3052 set_raddr_seg(wqe
, rdma_wr(wr
)->remote_addr
,
3054 wqe
+= sizeof (struct mlx4_wqe_raddr_seg
);
3055 size
+= sizeof (struct mlx4_wqe_raddr_seg
) / 16;
3058 case IB_WR_LOCAL_INV
:
3059 ctrl
->srcrb_flags
|=
3060 cpu_to_be32(MLX4_WQE_CTRL_STRONG_ORDER
);
3061 set_local_inv_seg(wqe
, wr
->ex
.invalidate_rkey
);
3062 wqe
+= sizeof (struct mlx4_wqe_local_inval_seg
);
3063 size
+= sizeof (struct mlx4_wqe_local_inval_seg
) / 16;
3067 ctrl
->srcrb_flags
|=
3068 cpu_to_be32(MLX4_WQE_CTRL_STRONG_ORDER
);
3069 set_reg_seg(wqe
, reg_wr(wr
));
3070 wqe
+= sizeof(struct mlx4_wqe_fmr_seg
);
3071 size
+= sizeof(struct mlx4_wqe_fmr_seg
) / 16;
3075 /* No extra segments required for sends */
3080 case MLX4_IB_QPT_TUN_SMI_OWNER
:
3081 err
= build_sriov_qp0_header(to_msqp(qp
), ud_wr(wr
),
3083 if (unlikely(err
)) {
3088 size
+= seglen
/ 16;
3090 case MLX4_IB_QPT_TUN_SMI
:
3091 case MLX4_IB_QPT_TUN_GSI
:
3092 /* this is a UD qp used in MAD responses to slaves. */
3093 set_datagram_seg(wqe
, ud_wr(wr
));
3094 /* set the forced-loopback bit in the data seg av */
3095 *(__be32
*) wqe
|= cpu_to_be32(0x80000000);
3096 wqe
+= sizeof (struct mlx4_wqe_datagram_seg
);
3097 size
+= sizeof (struct mlx4_wqe_datagram_seg
) / 16;
3099 case MLX4_IB_QPT_UD
:
3100 set_datagram_seg(wqe
, ud_wr(wr
));
3101 wqe
+= sizeof (struct mlx4_wqe_datagram_seg
);
3102 size
+= sizeof (struct mlx4_wqe_datagram_seg
) / 16;
3104 if (wr
->opcode
== IB_WR_LSO
) {
3105 err
= build_lso_seg(wqe
, ud_wr(wr
), qp
, &seglen
,
3107 if (unlikely(err
)) {
3111 lso_wqe
= (__be32
*) wqe
;
3113 size
+= seglen
/ 16;
3117 case MLX4_IB_QPT_PROXY_SMI_OWNER
:
3118 err
= build_sriov_qp0_header(to_msqp(qp
), ud_wr(wr
),
3120 if (unlikely(err
)) {
3125 size
+= seglen
/ 16;
3126 /* to start tunnel header on a cache-line boundary */
3127 add_zero_len_inline(wqe
);
3130 build_tunnel_header(ud_wr(wr
), wqe
, &seglen
);
3132 size
+= seglen
/ 16;
3134 case MLX4_IB_QPT_PROXY_SMI
:
3135 case MLX4_IB_QPT_PROXY_GSI
:
3136 /* If we are tunneling special qps, this is a UD qp.
3137 * In this case we first add a UD segment targeting
3138 * the tunnel qp, and then add a header with address
3140 set_tunnel_datagram_seg(to_mdev(ibqp
->device
), wqe
,
3142 qp
->mlx4_ib_qp_type
);
3143 wqe
+= sizeof (struct mlx4_wqe_datagram_seg
);
3144 size
+= sizeof (struct mlx4_wqe_datagram_seg
) / 16;
3145 build_tunnel_header(ud_wr(wr
), wqe
, &seglen
);
3147 size
+= seglen
/ 16;
3150 case MLX4_IB_QPT_SMI
:
3151 case MLX4_IB_QPT_GSI
:
3152 err
= build_mlx_header(to_msqp(qp
), ud_wr(wr
), ctrl
,
3154 if (unlikely(err
)) {
3159 size
+= seglen
/ 16;
3167 * Write data segments in reverse order, so as to
3168 * overwrite cacheline stamp last within each
3169 * cacheline. This avoids issues with WQE
3174 dseg
+= wr
->num_sge
- 1;
3175 size
+= wr
->num_sge
* (sizeof (struct mlx4_wqe_data_seg
) / 16);
3177 /* Add one more inline data segment for ICRC for MLX sends */
3178 if (unlikely(qp
->mlx4_ib_qp_type
== MLX4_IB_QPT_SMI
||
3179 qp
->mlx4_ib_qp_type
== MLX4_IB_QPT_GSI
||
3180 qp
->mlx4_ib_qp_type
&
3181 (MLX4_IB_QPT_PROXY_SMI_OWNER
| MLX4_IB_QPT_TUN_SMI_OWNER
))) {
3182 set_mlx_icrc_seg(dseg
+ 1);
3183 size
+= sizeof (struct mlx4_wqe_data_seg
) / 16;
3186 for (i
= wr
->num_sge
- 1; i
>= 0; --i
, --dseg
)
3187 set_data_seg(dseg
, wr
->sg_list
+ i
);
3190 * Possibly overwrite stamping in cacheline with LSO
3191 * segment only after making sure all data segments
3195 *lso_wqe
= lso_hdr_sz
;
3197 ctrl
->qpn_vlan
.fence_size
= (wr
->send_flags
& IB_SEND_FENCE
?
3198 MLX4_WQE_CTRL_FENCE
: 0) | size
;
3201 * Make sure descriptor is fully written before
3202 * setting ownership bit (because HW can start
3203 * executing as soon as we do).
3207 if (wr
->opcode
< 0 || wr
->opcode
>= ARRAY_SIZE(mlx4_ib_opcode
)) {
3213 ctrl
->owner_opcode
= mlx4_ib_opcode
[wr
->opcode
] |
3214 (ind
& qp
->sq
.wqe_cnt
? cpu_to_be32(1 << 31) : 0) | blh
;
3216 stamp
= ind
+ qp
->sq_spare_wqes
;
3217 ind
+= DIV_ROUND_UP(size
* 16, 1U << qp
->sq
.wqe_shift
);
3220 * We can improve latency by not stamping the last
3221 * send queue WQE until after ringing the doorbell, so
3222 * only stamp here if there are still more WQEs to post.
3224 * Same optimization applies to padding with NOP wqe
3225 * in case of WQE shrinking (used to prevent wrap-around
3226 * in the middle of WR).
3229 stamp_send_wqe(qp
, stamp
, size
* 16);
3230 ind
= pad_wraparound(qp
, ind
);
3236 qp
->sq
.head
+= nreq
;
3239 * Make sure that descriptors are written before
3244 writel(qp
->doorbell_qpn
,
3245 to_mdev(ibqp
->device
)->uar_map
+ MLX4_SEND_DOORBELL
);
3248 * Make sure doorbells don't leak out of SQ spinlock
3249 * and reach the HCA out of order.
3253 stamp_send_wqe(qp
, stamp
, size
* 16);
3255 ind
= pad_wraparound(qp
, ind
);
3256 qp
->sq_next_wqe
= ind
;
3259 spin_unlock_irqrestore(&qp
->sq
.lock
, flags
);
3264 int mlx4_ib_post_recv(struct ib_qp
*ibqp
, struct ib_recv_wr
*wr
,
3265 struct ib_recv_wr
**bad_wr
)
3267 struct mlx4_ib_qp
*qp
= to_mqp(ibqp
);
3268 struct mlx4_wqe_data_seg
*scat
;
3269 unsigned long flags
;
3275 struct mlx4_ib_dev
*mdev
= to_mdev(ibqp
->device
);
3277 max_gs
= qp
->rq
.max_gs
;
3278 spin_lock_irqsave(&qp
->rq
.lock
, flags
);
3280 if (mdev
->dev
->persist
->state
& MLX4_DEVICE_STATE_INTERNAL_ERROR
) {
3287 ind
= qp
->rq
.head
& (qp
->rq
.wqe_cnt
- 1);
3289 for (nreq
= 0; wr
; ++nreq
, wr
= wr
->next
) {
3290 if (mlx4_wq_overflow(&qp
->rq
, nreq
, qp
->ibqp
.recv_cq
)) {
3296 if (unlikely(wr
->num_sge
> qp
->rq
.max_gs
)) {
3302 scat
= get_recv_wqe(qp
, ind
);
3304 if (qp
->mlx4_ib_qp_type
& (MLX4_IB_QPT_PROXY_SMI_OWNER
|
3305 MLX4_IB_QPT_PROXY_SMI
| MLX4_IB_QPT_PROXY_GSI
)) {
3306 ib_dma_sync_single_for_device(ibqp
->device
,
3307 qp
->sqp_proxy_rcv
[ind
].map
,
3308 sizeof (struct mlx4_ib_proxy_sqp_hdr
),
3311 cpu_to_be32(sizeof (struct mlx4_ib_proxy_sqp_hdr
));
3312 /* use dma lkey from upper layer entry */
3313 scat
->lkey
= cpu_to_be32(wr
->sg_list
->lkey
);
3314 scat
->addr
= cpu_to_be64(qp
->sqp_proxy_rcv
[ind
].map
);
3319 for (i
= 0; i
< wr
->num_sge
; ++i
)
3320 __set_data_seg(scat
+ i
, wr
->sg_list
+ i
);
3323 scat
[i
].byte_count
= 0;
3324 scat
[i
].lkey
= cpu_to_be32(MLX4_INVALID_LKEY
);
3328 qp
->rq
.wrid
[ind
] = wr
->wr_id
;
3330 ind
= (ind
+ 1) & (qp
->rq
.wqe_cnt
- 1);
3335 qp
->rq
.head
+= nreq
;
3338 * Make sure that descriptors are written before
3343 *qp
->db
.db
= cpu_to_be32(qp
->rq
.head
& 0xffff);
3346 spin_unlock_irqrestore(&qp
->rq
.lock
, flags
);
3351 static inline enum ib_qp_state
to_ib_qp_state(enum mlx4_qp_state mlx4_state
)
3353 switch (mlx4_state
) {
3354 case MLX4_QP_STATE_RST
: return IB_QPS_RESET
;
3355 case MLX4_QP_STATE_INIT
: return IB_QPS_INIT
;
3356 case MLX4_QP_STATE_RTR
: return IB_QPS_RTR
;
3357 case MLX4_QP_STATE_RTS
: return IB_QPS_RTS
;
3358 case MLX4_QP_STATE_SQ_DRAINING
:
3359 case MLX4_QP_STATE_SQD
: return IB_QPS_SQD
;
3360 case MLX4_QP_STATE_SQER
: return IB_QPS_SQE
;
3361 case MLX4_QP_STATE_ERR
: return IB_QPS_ERR
;
3366 static inline enum ib_mig_state
to_ib_mig_state(int mlx4_mig_state
)
3368 switch (mlx4_mig_state
) {
3369 case MLX4_QP_PM_ARMED
: return IB_MIG_ARMED
;
3370 case MLX4_QP_PM_REARM
: return IB_MIG_REARM
;
3371 case MLX4_QP_PM_MIGRATED
: return IB_MIG_MIGRATED
;
3376 static int to_ib_qp_access_flags(int mlx4_flags
)
3380 if (mlx4_flags
& MLX4_QP_BIT_RRE
)
3381 ib_flags
|= IB_ACCESS_REMOTE_READ
;
3382 if (mlx4_flags
& MLX4_QP_BIT_RWE
)
3383 ib_flags
|= IB_ACCESS_REMOTE_WRITE
;
3384 if (mlx4_flags
& MLX4_QP_BIT_RAE
)
3385 ib_flags
|= IB_ACCESS_REMOTE_ATOMIC
;
3390 static void to_ib_ah_attr(struct mlx4_ib_dev
*ibdev
, struct ib_ah_attr
*ib_ah_attr
,
3391 struct mlx4_qp_path
*path
)
3393 struct mlx4_dev
*dev
= ibdev
->dev
;
3396 memset(ib_ah_attr
, 0, sizeof *ib_ah_attr
);
3397 ib_ah_attr
->port_num
= path
->sched_queue
& 0x40 ? 2 : 1;
3399 if (ib_ah_attr
->port_num
== 0 || ib_ah_attr
->port_num
> dev
->caps
.num_ports
)
3402 is_eth
= rdma_port_get_link_layer(&ibdev
->ib_dev
, ib_ah_attr
->port_num
) ==
3403 IB_LINK_LAYER_ETHERNET
;
3405 ib_ah_attr
->sl
= ((path
->sched_queue
>> 3) & 0x7) |
3406 ((path
->sched_queue
& 4) << 1);
3408 ib_ah_attr
->sl
= (path
->sched_queue
>> 2) & 0xf;
3410 ib_ah_attr
->dlid
= be16_to_cpu(path
->rlid
);
3411 ib_ah_attr
->src_path_bits
= path
->grh_mylmc
& 0x7f;
3412 ib_ah_attr
->static_rate
= path
->static_rate
? path
->static_rate
- 5 : 0;
3413 ib_ah_attr
->ah_flags
= (path
->grh_mylmc
& (1 << 7)) ? IB_AH_GRH
: 0;
3414 if (ib_ah_attr
->ah_flags
) {
3415 ib_ah_attr
->grh
.sgid_index
= path
->mgid_index
;
3416 ib_ah_attr
->grh
.hop_limit
= path
->hop_limit
;
3417 ib_ah_attr
->grh
.traffic_class
=
3418 (be32_to_cpu(path
->tclass_flowlabel
) >> 20) & 0xff;
3419 ib_ah_attr
->grh
.flow_label
=
3420 be32_to_cpu(path
->tclass_flowlabel
) & 0xfffff;
3421 memcpy(ib_ah_attr
->grh
.dgid
.raw
,
3422 path
->rgid
, sizeof ib_ah_attr
->grh
.dgid
.raw
);
3426 int mlx4_ib_query_qp(struct ib_qp
*ibqp
, struct ib_qp_attr
*qp_attr
, int qp_attr_mask
,
3427 struct ib_qp_init_attr
*qp_init_attr
)
3429 struct mlx4_ib_dev
*dev
= to_mdev(ibqp
->device
);
3430 struct mlx4_ib_qp
*qp
= to_mqp(ibqp
);
3431 struct mlx4_qp_context context
;
3435 mutex_lock(&qp
->mutex
);
3437 if (qp
->state
== IB_QPS_RESET
) {
3438 qp_attr
->qp_state
= IB_QPS_RESET
;
3442 err
= mlx4_qp_query(dev
->dev
, &qp
->mqp
, &context
);
3448 mlx4_state
= be32_to_cpu(context
.flags
) >> 28;
3450 qp
->state
= to_ib_qp_state(mlx4_state
);
3451 qp_attr
->qp_state
= qp
->state
;
3452 qp_attr
->path_mtu
= context
.mtu_msgmax
>> 5;
3453 qp_attr
->path_mig_state
=
3454 to_ib_mig_state((be32_to_cpu(context
.flags
) >> 11) & 0x3);
3455 qp_attr
->qkey
= be32_to_cpu(context
.qkey
);
3456 qp_attr
->rq_psn
= be32_to_cpu(context
.rnr_nextrecvpsn
) & 0xffffff;
3457 qp_attr
->sq_psn
= be32_to_cpu(context
.next_send_psn
) & 0xffffff;
3458 qp_attr
->dest_qp_num
= be32_to_cpu(context
.remote_qpn
) & 0xffffff;
3459 qp_attr
->qp_access_flags
=
3460 to_ib_qp_access_flags(be32_to_cpu(context
.params2
));
3462 if (qp
->ibqp
.qp_type
== IB_QPT_RC
|| qp
->ibqp
.qp_type
== IB_QPT_UC
) {
3463 to_ib_ah_attr(dev
, &qp_attr
->ah_attr
, &context
.pri_path
);
3464 to_ib_ah_attr(dev
, &qp_attr
->alt_ah_attr
, &context
.alt_path
);
3465 qp_attr
->alt_pkey_index
= context
.alt_path
.pkey_index
& 0x7f;
3466 qp_attr
->alt_port_num
= qp_attr
->alt_ah_attr
.port_num
;
3469 qp_attr
->pkey_index
= context
.pri_path
.pkey_index
& 0x7f;
3470 if (qp_attr
->qp_state
== IB_QPS_INIT
)
3471 qp_attr
->port_num
= qp
->port
;
3473 qp_attr
->port_num
= context
.pri_path
.sched_queue
& 0x40 ? 2 : 1;
3475 /* qp_attr->en_sqd_async_notify is only applicable in modify qp */
3476 qp_attr
->sq_draining
= mlx4_state
== MLX4_QP_STATE_SQ_DRAINING
;
3478 qp_attr
->max_rd_atomic
= 1 << ((be32_to_cpu(context
.params1
) >> 21) & 0x7);
3480 qp_attr
->max_dest_rd_atomic
=
3481 1 << ((be32_to_cpu(context
.params2
) >> 21) & 0x7);
3482 qp_attr
->min_rnr_timer
=
3483 (be32_to_cpu(context
.rnr_nextrecvpsn
) >> 24) & 0x1f;
3484 qp_attr
->timeout
= context
.pri_path
.ackto
>> 3;
3485 qp_attr
->retry_cnt
= (be32_to_cpu(context
.params1
) >> 16) & 0x7;
3486 qp_attr
->rnr_retry
= (be32_to_cpu(context
.params1
) >> 13) & 0x7;
3487 qp_attr
->alt_timeout
= context
.alt_path
.ackto
>> 3;
3490 qp_attr
->cur_qp_state
= qp_attr
->qp_state
;
3491 qp_attr
->cap
.max_recv_wr
= qp
->rq
.wqe_cnt
;
3492 qp_attr
->cap
.max_recv_sge
= qp
->rq
.max_gs
;
3494 if (!ibqp
->uobject
) {
3495 qp_attr
->cap
.max_send_wr
= qp
->sq
.wqe_cnt
;
3496 qp_attr
->cap
.max_send_sge
= qp
->sq
.max_gs
;
3498 qp_attr
->cap
.max_send_wr
= 0;
3499 qp_attr
->cap
.max_send_sge
= 0;
3503 * We don't support inline sends for kernel QPs (yet), and we
3504 * don't know what userspace's value should be.
3506 qp_attr
->cap
.max_inline_data
= 0;
3508 qp_init_attr
->cap
= qp_attr
->cap
;
3510 qp_init_attr
->create_flags
= 0;
3511 if (qp
->flags
& MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK
)
3512 qp_init_attr
->create_flags
|= IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK
;
3514 if (qp
->flags
& MLX4_IB_QP_LSO
)
3515 qp_init_attr
->create_flags
|= IB_QP_CREATE_IPOIB_UD_LSO
;
3517 if (qp
->flags
& MLX4_IB_QP_NETIF
)
3518 qp_init_attr
->create_flags
|= IB_QP_CREATE_NETIF_QP
;
3520 qp_init_attr
->sq_sig_type
=
3521 qp
->sq_signal_bits
== cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE
) ?
3522 IB_SIGNAL_ALL_WR
: IB_SIGNAL_REQ_WR
;
3525 mutex_unlock(&qp
->mutex
);