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225c7b1f RD |
1 | /* |
2 | * Copyright (c) 2007 Cisco Systems, Inc. All rights reserved. | |
51a379d0 | 3 | * Copyright (c) 2007, 2008 Mellanox Technologies. All rights reserved. |
225c7b1f RD |
4 | * |
5 | * This software is available to you under a choice of one of two | |
6 | * licenses. You may choose to be licensed under the terms of the GNU | |
7 | * General Public License (GPL) Version 2, available from the file | |
8 | * COPYING in the main directory of this source tree, or the | |
9 | * OpenIB.org BSD license below: | |
10 | * | |
11 | * Redistribution and use in source and binary forms, with or | |
12 | * without modification, are permitted provided that the following | |
13 | * conditions are met: | |
14 | * | |
15 | * - Redistributions of source code must retain the above | |
16 | * copyright notice, this list of conditions and the following | |
17 | * disclaimer. | |
18 | * | |
19 | * - Redistributions in binary form must reproduce the above | |
20 | * copyright notice, this list of conditions and the following | |
21 | * disclaimer in the documentation and/or other materials | |
22 | * provided with the distribution. | |
23 | * | |
24 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | |
25 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
26 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | |
27 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS | |
28 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN | |
29 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | |
30 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
31 | * SOFTWARE. | |
32 | */ | |
33 | ||
ea54b10c | 34 | #include <linux/log2.h> |
1049f138 | 35 | #include <linux/etherdevice.h> |
3ef967a4 | 36 | #include <net/ip.h> |
5a0e3ad6 | 37 | #include <linux/slab.h> |
fa417f7b | 38 | #include <linux/netdevice.h> |
0ef2f05c | 39 | #include <linux/vmalloc.h> |
ea54b10c | 40 | |
225c7b1f RD |
41 | #include <rdma/ib_cache.h> |
42 | #include <rdma/ib_pack.h> | |
4c3eb3ca | 43 | #include <rdma/ib_addr.h> |
1ffeb2eb | 44 | #include <rdma/ib_mad.h> |
225c7b1f | 45 | |
2f48485d | 46 | #include <linux/mlx4/driver.h> |
225c7b1f RD |
47 | #include <linux/mlx4/qp.h> |
48 | ||
49 | #include "mlx4_ib.h" | |
9ce28a20 | 50 | #include <rdma/mlx4-abi.h> |
225c7b1f | 51 | |
35f05dab YH |
52 | static void mlx4_ib_lock_cqs(struct mlx4_ib_cq *send_cq, |
53 | struct mlx4_ib_cq *recv_cq); | |
54 | static void mlx4_ib_unlock_cqs(struct mlx4_ib_cq *send_cq, | |
55 | struct mlx4_ib_cq *recv_cq); | |
56 | ||
225c7b1f RD |
57 | enum { |
58 | MLX4_IB_ACK_REQ_FREQ = 8, | |
59 | }; | |
60 | ||
61 | enum { | |
62 | MLX4_IB_DEFAULT_SCHED_QUEUE = 0x83, | |
fa417f7b EC |
63 | MLX4_IB_DEFAULT_QP0_SCHED_QUEUE = 0x3f, |
64 | MLX4_IB_LINK_TYPE_IB = 0, | |
65 | MLX4_IB_LINK_TYPE_ETH = 1 | |
225c7b1f RD |
66 | }; |
67 | ||
68 | enum { | |
69 | /* | |
fa417f7b | 70 | * Largest possible UD header: send with GRH and immediate |
4c3eb3ca EC |
71 | * data plus 18 bytes for an Ethernet header with VLAN/802.1Q |
72 | * tag. (LRH would only use 8 bytes, so Ethernet is the | |
73 | * biggest case) | |
225c7b1f | 74 | */ |
4c3eb3ca | 75 | MLX4_IB_UD_HEADER_SIZE = 82, |
417608c2 | 76 | MLX4_IB_LSO_HEADER_SPARE = 128, |
225c7b1f RD |
77 | }; |
78 | ||
79 | struct mlx4_ib_sqp { | |
80 | struct mlx4_ib_qp qp; | |
81 | int pkey_index; | |
82 | u32 qkey; | |
83 | u32 send_psn; | |
84 | struct ib_ud_header ud_header; | |
85 | u8 header_buf[MLX4_IB_UD_HEADER_SIZE]; | |
e1b866c6 | 86 | struct ib_qp *roce_v2_gsi; |
225c7b1f RD |
87 | }; |
88 | ||
83904132 | 89 | enum { |
417608c2 EC |
90 | MLX4_IB_MIN_SQ_STRIDE = 6, |
91 | MLX4_IB_CACHE_LINE_SIZE = 64, | |
83904132 JM |
92 | }; |
93 | ||
3987a2d3 OG |
94 | enum { |
95 | MLX4_RAW_QP_MTU = 7, | |
96 | MLX4_RAW_QP_MSGMAX = 31, | |
97 | }; | |
98 | ||
297e0dad MS |
99 | #ifndef ETH_ALEN |
100 | #define ETH_ALEN 6 | |
101 | #endif | |
297e0dad | 102 | |
225c7b1f | 103 | static const __be32 mlx4_ib_opcode[] = { |
6fa8f719 VS |
104 | [IB_WR_SEND] = cpu_to_be32(MLX4_OPCODE_SEND), |
105 | [IB_WR_LSO] = cpu_to_be32(MLX4_OPCODE_LSO), | |
106 | [IB_WR_SEND_WITH_IMM] = cpu_to_be32(MLX4_OPCODE_SEND_IMM), | |
107 | [IB_WR_RDMA_WRITE] = cpu_to_be32(MLX4_OPCODE_RDMA_WRITE), | |
108 | [IB_WR_RDMA_WRITE_WITH_IMM] = cpu_to_be32(MLX4_OPCODE_RDMA_WRITE_IMM), | |
109 | [IB_WR_RDMA_READ] = cpu_to_be32(MLX4_OPCODE_RDMA_READ), | |
110 | [IB_WR_ATOMIC_CMP_AND_SWP] = cpu_to_be32(MLX4_OPCODE_ATOMIC_CS), | |
111 | [IB_WR_ATOMIC_FETCH_AND_ADD] = cpu_to_be32(MLX4_OPCODE_ATOMIC_FA), | |
112 | [IB_WR_SEND_WITH_INV] = cpu_to_be32(MLX4_OPCODE_SEND_INVAL), | |
113 | [IB_WR_LOCAL_INV] = cpu_to_be32(MLX4_OPCODE_LOCAL_INVAL), | |
1b2cd0fc | 114 | [IB_WR_REG_MR] = cpu_to_be32(MLX4_OPCODE_FMR), |
6fa8f719 VS |
115 | [IB_WR_MASKED_ATOMIC_CMP_AND_SWP] = cpu_to_be32(MLX4_OPCODE_MASKED_ATOMIC_CS), |
116 | [IB_WR_MASKED_ATOMIC_FETCH_AND_ADD] = cpu_to_be32(MLX4_OPCODE_MASKED_ATOMIC_FA), | |
225c7b1f RD |
117 | }; |
118 | ||
119 | static struct mlx4_ib_sqp *to_msqp(struct mlx4_ib_qp *mqp) | |
120 | { | |
121 | return container_of(mqp, struct mlx4_ib_sqp, qp); | |
122 | } | |
123 | ||
1ffeb2eb JM |
124 | static int is_tunnel_qp(struct mlx4_ib_dev *dev, struct mlx4_ib_qp *qp) |
125 | { | |
126 | if (!mlx4_is_master(dev->dev)) | |
127 | return 0; | |
128 | ||
47605df9 JM |
129 | return qp->mqp.qpn >= dev->dev->phys_caps.base_tunnel_sqpn && |
130 | qp->mqp.qpn < dev->dev->phys_caps.base_tunnel_sqpn + | |
131 | 8 * MLX4_MFUNC_MAX; | |
1ffeb2eb JM |
132 | } |
133 | ||
225c7b1f RD |
134 | static int is_sqp(struct mlx4_ib_dev *dev, struct mlx4_ib_qp *qp) |
135 | { | |
47605df9 JM |
136 | int proxy_sqp = 0; |
137 | int real_sqp = 0; | |
138 | int i; | |
139 | /* PPF or Native -- real SQP */ | |
140 | real_sqp = ((mlx4_is_master(dev->dev) || !mlx4_is_mfunc(dev->dev)) && | |
141 | qp->mqp.qpn >= dev->dev->phys_caps.base_sqpn && | |
142 | qp->mqp.qpn <= dev->dev->phys_caps.base_sqpn + 3); | |
143 | if (real_sqp) | |
144 | return 1; | |
145 | /* VF or PF -- proxy SQP */ | |
146 | if (mlx4_is_mfunc(dev->dev)) { | |
147 | for (i = 0; i < dev->dev->caps.num_ports; i++) { | |
148 | if (qp->mqp.qpn == dev->dev->caps.qp0_proxy[i] || | |
149 | qp->mqp.qpn == dev->dev->caps.qp1_proxy[i]) { | |
150 | proxy_sqp = 1; | |
151 | break; | |
152 | } | |
153 | } | |
154 | } | |
e1b866c6 MS |
155 | if (proxy_sqp) |
156 | return 1; | |
157 | ||
158 | return !!(qp->flags & MLX4_IB_ROCE_V2_GSI_QP); | |
225c7b1f RD |
159 | } |
160 | ||
1ffeb2eb | 161 | /* used for INIT/CLOSE port logic */ |
225c7b1f RD |
162 | static int is_qp0(struct mlx4_ib_dev *dev, struct mlx4_ib_qp *qp) |
163 | { | |
47605df9 JM |
164 | int proxy_qp0 = 0; |
165 | int real_qp0 = 0; | |
166 | int i; | |
167 | /* PPF or Native -- real QP0 */ | |
168 | real_qp0 = ((mlx4_is_master(dev->dev) || !mlx4_is_mfunc(dev->dev)) && | |
169 | qp->mqp.qpn >= dev->dev->phys_caps.base_sqpn && | |
170 | qp->mqp.qpn <= dev->dev->phys_caps.base_sqpn + 1); | |
171 | if (real_qp0) | |
172 | return 1; | |
173 | /* VF or PF -- proxy QP0 */ | |
174 | if (mlx4_is_mfunc(dev->dev)) { | |
175 | for (i = 0; i < dev->dev->caps.num_ports; i++) { | |
176 | if (qp->mqp.qpn == dev->dev->caps.qp0_proxy[i]) { | |
177 | proxy_qp0 = 1; | |
178 | break; | |
179 | } | |
180 | } | |
181 | } | |
182 | return proxy_qp0; | |
225c7b1f RD |
183 | } |
184 | ||
185 | static void *get_wqe(struct mlx4_ib_qp *qp, int offset) | |
186 | { | |
1c69fc2a | 187 | return mlx4_buf_offset(&qp->buf, offset); |
225c7b1f RD |
188 | } |
189 | ||
190 | static void *get_recv_wqe(struct mlx4_ib_qp *qp, int n) | |
191 | { | |
192 | return get_wqe(qp, qp->rq.offset + (n << qp->rq.wqe_shift)); | |
193 | } | |
194 | ||
195 | static void *get_send_wqe(struct mlx4_ib_qp *qp, int n) | |
196 | { | |
197 | return get_wqe(qp, qp->sq.offset + (n << qp->sq.wqe_shift)); | |
198 | } | |
199 | ||
0e6e7416 RD |
200 | /* |
201 | * Stamp a SQ WQE so that it is invalid if prefetched by marking the | |
ea54b10c JM |
202 | * first four bytes of every 64 byte chunk with |
203 | * 0x7FFFFFF | (invalid_ownership_value << 31). | |
204 | * | |
205 | * When the max work request size is less than or equal to the WQE | |
206 | * basic block size, as an optimization, we can stamp all WQEs with | |
207 | * 0xffffffff, and skip the very first chunk of each WQE. | |
0e6e7416 | 208 | */ |
ea54b10c | 209 | static void stamp_send_wqe(struct mlx4_ib_qp *qp, int n, int size) |
0e6e7416 | 210 | { |
d2ae16d5 | 211 | __be32 *wqe; |
0e6e7416 | 212 | int i; |
ea54b10c JM |
213 | int s; |
214 | int ind; | |
215 | void *buf; | |
216 | __be32 stamp; | |
9670e553 | 217 | struct mlx4_wqe_ctrl_seg *ctrl; |
ea54b10c | 218 | |
ea54b10c | 219 | if (qp->sq_max_wqes_per_wr > 1) { |
9670e553 | 220 | s = roundup(size, 1U << qp->sq.wqe_shift); |
ea54b10c JM |
221 | for (i = 0; i < s; i += 64) { |
222 | ind = (i >> qp->sq.wqe_shift) + n; | |
223 | stamp = ind & qp->sq.wqe_cnt ? cpu_to_be32(0x7fffffff) : | |
224 | cpu_to_be32(0xffffffff); | |
225 | buf = get_send_wqe(qp, ind & (qp->sq.wqe_cnt - 1)); | |
226 | wqe = buf + (i & ((1 << qp->sq.wqe_shift) - 1)); | |
227 | *wqe = stamp; | |
228 | } | |
229 | } else { | |
9670e553 | 230 | ctrl = buf = get_send_wqe(qp, n & (qp->sq.wqe_cnt - 1)); |
224e92e0 | 231 | s = (ctrl->qpn_vlan.fence_size & 0x3f) << 4; |
ea54b10c JM |
232 | for (i = 64; i < s; i += 64) { |
233 | wqe = buf + i; | |
d2ae16d5 | 234 | *wqe = cpu_to_be32(0xffffffff); |
ea54b10c JM |
235 | } |
236 | } | |
237 | } | |
238 | ||
239 | static void post_nop_wqe(struct mlx4_ib_qp *qp, int n, int size) | |
240 | { | |
241 | struct mlx4_wqe_ctrl_seg *ctrl; | |
242 | struct mlx4_wqe_inline_seg *inl; | |
243 | void *wqe; | |
244 | int s; | |
245 | ||
246 | ctrl = wqe = get_send_wqe(qp, n & (qp->sq.wqe_cnt - 1)); | |
247 | s = sizeof(struct mlx4_wqe_ctrl_seg); | |
248 | ||
249 | if (qp->ibqp.qp_type == IB_QPT_UD) { | |
250 | struct mlx4_wqe_datagram_seg *dgram = wqe + sizeof *ctrl; | |
251 | struct mlx4_av *av = (struct mlx4_av *)dgram->av; | |
252 | memset(dgram, 0, sizeof *dgram); | |
253 | av->port_pd = cpu_to_be32((qp->port << 24) | to_mpd(qp->ibqp.pd)->pdn); | |
254 | s += sizeof(struct mlx4_wqe_datagram_seg); | |
255 | } | |
256 | ||
257 | /* Pad the remainder of the WQE with an inline data segment. */ | |
258 | if (size > s) { | |
259 | inl = wqe + s; | |
260 | inl->byte_count = cpu_to_be32(1 << 31 | (size - s - sizeof *inl)); | |
261 | } | |
262 | ctrl->srcrb_flags = 0; | |
224e92e0 | 263 | ctrl->qpn_vlan.fence_size = size / 16; |
ea54b10c JM |
264 | /* |
265 | * Make sure descriptor is fully written before setting ownership bit | |
266 | * (because HW can start executing as soon as we do). | |
267 | */ | |
268 | wmb(); | |
269 | ||
270 | ctrl->owner_opcode = cpu_to_be32(MLX4_OPCODE_NOP | MLX4_WQE_CTRL_NEC) | | |
271 | (n & qp->sq.wqe_cnt ? cpu_to_be32(1 << 31) : 0); | |
0e6e7416 | 272 | |
ea54b10c JM |
273 | stamp_send_wqe(qp, n + qp->sq_spare_wqes, size); |
274 | } | |
275 | ||
276 | /* Post NOP WQE to prevent wrap-around in the middle of WR */ | |
277 | static inline unsigned pad_wraparound(struct mlx4_ib_qp *qp, int ind) | |
278 | { | |
279 | unsigned s = qp->sq.wqe_cnt - (ind & (qp->sq.wqe_cnt - 1)); | |
280 | if (unlikely(s < qp->sq_max_wqes_per_wr)) { | |
281 | post_nop_wqe(qp, ind, s << qp->sq.wqe_shift); | |
282 | ind += s; | |
283 | } | |
284 | return ind; | |
0e6e7416 RD |
285 | } |
286 | ||
225c7b1f RD |
287 | static void mlx4_ib_qp_event(struct mlx4_qp *qp, enum mlx4_event type) |
288 | { | |
289 | struct ib_event event; | |
290 | struct ib_qp *ibqp = &to_mibqp(qp)->ibqp; | |
291 | ||
292 | if (type == MLX4_EVENT_TYPE_PATH_MIG) | |
293 | to_mibqp(qp)->port = to_mibqp(qp)->alt_port; | |
294 | ||
295 | if (ibqp->event_handler) { | |
296 | event.device = ibqp->device; | |
297 | event.element.qp = ibqp; | |
298 | switch (type) { | |
299 | case MLX4_EVENT_TYPE_PATH_MIG: | |
300 | event.event = IB_EVENT_PATH_MIG; | |
301 | break; | |
302 | case MLX4_EVENT_TYPE_COMM_EST: | |
303 | event.event = IB_EVENT_COMM_EST; | |
304 | break; | |
305 | case MLX4_EVENT_TYPE_SQ_DRAINED: | |
306 | event.event = IB_EVENT_SQ_DRAINED; | |
307 | break; | |
308 | case MLX4_EVENT_TYPE_SRQ_QP_LAST_WQE: | |
309 | event.event = IB_EVENT_QP_LAST_WQE_REACHED; | |
310 | break; | |
311 | case MLX4_EVENT_TYPE_WQ_CATAS_ERROR: | |
312 | event.event = IB_EVENT_QP_FATAL; | |
313 | break; | |
314 | case MLX4_EVENT_TYPE_PATH_MIG_FAILED: | |
315 | event.event = IB_EVENT_PATH_MIG_ERR; | |
316 | break; | |
317 | case MLX4_EVENT_TYPE_WQ_INVAL_REQ_ERROR: | |
318 | event.event = IB_EVENT_QP_REQ_ERR; | |
319 | break; | |
320 | case MLX4_EVENT_TYPE_WQ_ACCESS_ERROR: | |
321 | event.event = IB_EVENT_QP_ACCESS_ERR; | |
322 | break; | |
323 | default: | |
987c8f8f | 324 | pr_warn("Unexpected event type %d " |
225c7b1f RD |
325 | "on QP %06x\n", type, qp->qpn); |
326 | return; | |
327 | } | |
328 | ||
329 | ibqp->event_handler(&event, ibqp->qp_context); | |
330 | } | |
331 | } | |
332 | ||
1ffeb2eb | 333 | static int send_wqe_overhead(enum mlx4_ib_qp_type type, u32 flags) |
225c7b1f RD |
334 | { |
335 | /* | |
336 | * UD WQEs must have a datagram segment. | |
337 | * RC and UC WQEs might have a remote address segment. | |
338 | * MLX WQEs need two extra inline data segments (for the UD | |
339 | * header and space for the ICRC). | |
340 | */ | |
341 | switch (type) { | |
1ffeb2eb | 342 | case MLX4_IB_QPT_UD: |
225c7b1f | 343 | return sizeof (struct mlx4_wqe_ctrl_seg) + |
b832be1e | 344 | sizeof (struct mlx4_wqe_datagram_seg) + |
417608c2 | 345 | ((flags & MLX4_IB_QP_LSO) ? MLX4_IB_LSO_HEADER_SPARE : 0); |
1ffeb2eb JM |
346 | case MLX4_IB_QPT_PROXY_SMI_OWNER: |
347 | case MLX4_IB_QPT_PROXY_SMI: | |
348 | case MLX4_IB_QPT_PROXY_GSI: | |
349 | return sizeof (struct mlx4_wqe_ctrl_seg) + | |
350 | sizeof (struct mlx4_wqe_datagram_seg) + 64; | |
351 | case MLX4_IB_QPT_TUN_SMI_OWNER: | |
352 | case MLX4_IB_QPT_TUN_GSI: | |
353 | return sizeof (struct mlx4_wqe_ctrl_seg) + | |
354 | sizeof (struct mlx4_wqe_datagram_seg); | |
355 | ||
356 | case MLX4_IB_QPT_UC: | |
225c7b1f RD |
357 | return sizeof (struct mlx4_wqe_ctrl_seg) + |
358 | sizeof (struct mlx4_wqe_raddr_seg); | |
1ffeb2eb | 359 | case MLX4_IB_QPT_RC: |
225c7b1f | 360 | return sizeof (struct mlx4_wqe_ctrl_seg) + |
f2940e2c | 361 | sizeof (struct mlx4_wqe_masked_atomic_seg) + |
225c7b1f | 362 | sizeof (struct mlx4_wqe_raddr_seg); |
1ffeb2eb JM |
363 | case MLX4_IB_QPT_SMI: |
364 | case MLX4_IB_QPT_GSI: | |
225c7b1f RD |
365 | return sizeof (struct mlx4_wqe_ctrl_seg) + |
366 | ALIGN(MLX4_IB_UD_HEADER_SIZE + | |
e61ef241 RD |
367 | DIV_ROUND_UP(MLX4_IB_UD_HEADER_SIZE, |
368 | MLX4_INLINE_ALIGN) * | |
225c7b1f RD |
369 | sizeof (struct mlx4_wqe_inline_seg), |
370 | sizeof (struct mlx4_wqe_data_seg)) + | |
371 | ALIGN(4 + | |
372 | sizeof (struct mlx4_wqe_inline_seg), | |
373 | sizeof (struct mlx4_wqe_data_seg)); | |
374 | default: | |
375 | return sizeof (struct mlx4_wqe_ctrl_seg); | |
376 | } | |
377 | } | |
378 | ||
2446304d | 379 | static int set_rq_size(struct mlx4_ib_dev *dev, struct ib_qp_cap *cap, |
0a1405da | 380 | int is_user, int has_rq, struct mlx4_ib_qp *qp) |
225c7b1f | 381 | { |
2446304d | 382 | /* Sanity check RQ size before proceeding */ |
fc2d0044 SG |
383 | if (cap->max_recv_wr > dev->dev->caps.max_wqes - MLX4_IB_SQ_MAX_SPARE || |
384 | cap->max_recv_sge > min(dev->dev->caps.max_sq_sg, dev->dev->caps.max_rq_sg)) | |
2446304d EC |
385 | return -EINVAL; |
386 | ||
0a1405da | 387 | if (!has_rq) { |
a4cd7ed8 RD |
388 | if (cap->max_recv_wr) |
389 | return -EINVAL; | |
2446304d | 390 | |
0e6e7416 | 391 | qp->rq.wqe_cnt = qp->rq.max_gs = 0; |
a4cd7ed8 RD |
392 | } else { |
393 | /* HW requires >= 1 RQ entry with >= 1 gather entry */ | |
394 | if (is_user && (!cap->max_recv_wr || !cap->max_recv_sge)) | |
395 | return -EINVAL; | |
396 | ||
0e6e7416 | 397 | qp->rq.wqe_cnt = roundup_pow_of_two(max(1U, cap->max_recv_wr)); |
42c059ea | 398 | qp->rq.max_gs = roundup_pow_of_two(max(1U, cap->max_recv_sge)); |
a4cd7ed8 RD |
399 | qp->rq.wqe_shift = ilog2(qp->rq.max_gs * sizeof (struct mlx4_wqe_data_seg)); |
400 | } | |
2446304d | 401 | |
fc2d0044 SG |
402 | /* leave userspace return values as they were, so as not to break ABI */ |
403 | if (is_user) { | |
404 | cap->max_recv_wr = qp->rq.max_post = qp->rq.wqe_cnt; | |
405 | cap->max_recv_sge = qp->rq.max_gs; | |
406 | } else { | |
407 | cap->max_recv_wr = qp->rq.max_post = | |
408 | min(dev->dev->caps.max_wqes - MLX4_IB_SQ_MAX_SPARE, qp->rq.wqe_cnt); | |
409 | cap->max_recv_sge = min(qp->rq.max_gs, | |
410 | min(dev->dev->caps.max_sq_sg, | |
411 | dev->dev->caps.max_rq_sg)); | |
412 | } | |
2446304d EC |
413 | |
414 | return 0; | |
415 | } | |
416 | ||
417 | static int set_kernel_sq_size(struct mlx4_ib_dev *dev, struct ib_qp_cap *cap, | |
73898db0 HA |
418 | enum mlx4_ib_qp_type type, struct mlx4_ib_qp *qp, |
419 | bool shrink_wqe) | |
2446304d | 420 | { |
ea54b10c JM |
421 | int s; |
422 | ||
2446304d | 423 | /* Sanity check SQ size before proceeding */ |
fc2d0044 SG |
424 | if (cap->max_send_wr > (dev->dev->caps.max_wqes - MLX4_IB_SQ_MAX_SPARE) || |
425 | cap->max_send_sge > min(dev->dev->caps.max_sq_sg, dev->dev->caps.max_rq_sg) || | |
b832be1e | 426 | cap->max_inline_data + send_wqe_overhead(type, qp->flags) + |
225c7b1f RD |
427 | sizeof (struct mlx4_wqe_inline_seg) > dev->dev->caps.max_sq_desc_sz) |
428 | return -EINVAL; | |
429 | ||
430 | /* | |
431 | * For MLX transport we need 2 extra S/G entries: | |
432 | * one for the header and one for the checksum at the end | |
433 | */ | |
1ffeb2eb JM |
434 | if ((type == MLX4_IB_QPT_SMI || type == MLX4_IB_QPT_GSI || |
435 | type & (MLX4_IB_QPT_PROXY_SMI_OWNER | MLX4_IB_QPT_TUN_SMI_OWNER)) && | |
225c7b1f RD |
436 | cap->max_send_sge + 2 > dev->dev->caps.max_sq_sg) |
437 | return -EINVAL; | |
438 | ||
ea54b10c JM |
439 | s = max(cap->max_send_sge * sizeof (struct mlx4_wqe_data_seg), |
440 | cap->max_inline_data + sizeof (struct mlx4_wqe_inline_seg)) + | |
b832be1e | 441 | send_wqe_overhead(type, qp->flags); |
225c7b1f | 442 | |
cd155c1c RD |
443 | if (s > dev->dev->caps.max_sq_desc_sz) |
444 | return -EINVAL; | |
445 | ||
0e6e7416 | 446 | /* |
ea54b10c JM |
447 | * Hermon supports shrinking WQEs, such that a single work |
448 | * request can include multiple units of 1 << wqe_shift. This | |
449 | * way, work requests can differ in size, and do not have to | |
450 | * be a power of 2 in size, saving memory and speeding up send | |
451 | * WR posting. Unfortunately, if we do this then the | |
452 | * wqe_index field in CQEs can't be used to look up the WR ID | |
453 | * anymore, so we do this only if selective signaling is off. | |
454 | * | |
455 | * Further, on 32-bit platforms, we can't use vmap() to make | |
af901ca1 | 456 | * the QP buffer virtually contiguous. Thus we have to use |
ea54b10c JM |
457 | * constant-sized WRs to make sure a WR is always fully within |
458 | * a single page-sized chunk. | |
459 | * | |
460 | * Finally, we use NOP work requests to pad the end of the | |
461 | * work queue, to avoid wrap-around in the middle of WR. We | |
462 | * set NEC bit to avoid getting completions with error for | |
463 | * these NOP WRs, but since NEC is only supported starting | |
464 | * with firmware 2.2.232, we use constant-sized WRs for older | |
465 | * firmware. | |
466 | * | |
467 | * And, since MLX QPs only support SEND, we use constant-sized | |
468 | * WRs in this case. | |
469 | * | |
470 | * We look for the smallest value of wqe_shift such that the | |
471 | * resulting number of wqes does not exceed device | |
472 | * capabilities. | |
473 | * | |
474 | * We set WQE size to at least 64 bytes, this way stamping | |
475 | * invalidates each WQE. | |
0e6e7416 | 476 | */ |
73898db0 | 477 | if (shrink_wqe && dev->dev->caps.fw_ver >= MLX4_FW_VER_WQE_CTRL_NEC && |
ea54b10c | 478 | qp->sq_signal_bits && BITS_PER_LONG == 64 && |
1ffeb2eb JM |
479 | type != MLX4_IB_QPT_SMI && type != MLX4_IB_QPT_GSI && |
480 | !(type & (MLX4_IB_QPT_PROXY_SMI_OWNER | MLX4_IB_QPT_PROXY_SMI | | |
481 | MLX4_IB_QPT_PROXY_GSI | MLX4_IB_QPT_TUN_SMI_OWNER))) | |
ea54b10c JM |
482 | qp->sq.wqe_shift = ilog2(64); |
483 | else | |
484 | qp->sq.wqe_shift = ilog2(roundup_pow_of_two(s)); | |
485 | ||
486 | for (;;) { | |
ea54b10c JM |
487 | qp->sq_max_wqes_per_wr = DIV_ROUND_UP(s, 1U << qp->sq.wqe_shift); |
488 | ||
489 | /* | |
490 | * We need to leave 2 KB + 1 WR of headroom in the SQ to | |
491 | * allow HW to prefetch. | |
492 | */ | |
493 | qp->sq_spare_wqes = (2048 >> qp->sq.wqe_shift) + qp->sq_max_wqes_per_wr; | |
494 | qp->sq.wqe_cnt = roundup_pow_of_two(cap->max_send_wr * | |
495 | qp->sq_max_wqes_per_wr + | |
496 | qp->sq_spare_wqes); | |
497 | ||
498 | if (qp->sq.wqe_cnt <= dev->dev->caps.max_wqes) | |
499 | break; | |
500 | ||
501 | if (qp->sq_max_wqes_per_wr <= 1) | |
502 | return -EINVAL; | |
503 | ||
504 | ++qp->sq.wqe_shift; | |
505 | } | |
506 | ||
cd155c1c RD |
507 | qp->sq.max_gs = (min(dev->dev->caps.max_sq_desc_sz, |
508 | (qp->sq_max_wqes_per_wr << qp->sq.wqe_shift)) - | |
b832be1e EC |
509 | send_wqe_overhead(type, qp->flags)) / |
510 | sizeof (struct mlx4_wqe_data_seg); | |
0e6e7416 RD |
511 | |
512 | qp->buf_size = (qp->rq.wqe_cnt << qp->rq.wqe_shift) + | |
513 | (qp->sq.wqe_cnt << qp->sq.wqe_shift); | |
225c7b1f RD |
514 | if (qp->rq.wqe_shift > qp->sq.wqe_shift) { |
515 | qp->rq.offset = 0; | |
0e6e7416 | 516 | qp->sq.offset = qp->rq.wqe_cnt << qp->rq.wqe_shift; |
225c7b1f | 517 | } else { |
0e6e7416 | 518 | qp->rq.offset = qp->sq.wqe_cnt << qp->sq.wqe_shift; |
225c7b1f RD |
519 | qp->sq.offset = 0; |
520 | } | |
521 | ||
ea54b10c JM |
522 | cap->max_send_wr = qp->sq.max_post = |
523 | (qp->sq.wqe_cnt - qp->sq_spare_wqes) / qp->sq_max_wqes_per_wr; | |
cd155c1c RD |
524 | cap->max_send_sge = min(qp->sq.max_gs, |
525 | min(dev->dev->caps.max_sq_sg, | |
526 | dev->dev->caps.max_rq_sg)); | |
54e95f8d RD |
527 | /* We don't support inline sends for kernel QPs (yet) */ |
528 | cap->max_inline_data = 0; | |
225c7b1f RD |
529 | |
530 | return 0; | |
531 | } | |
532 | ||
83904132 JM |
533 | static int set_user_sq_size(struct mlx4_ib_dev *dev, |
534 | struct mlx4_ib_qp *qp, | |
2446304d EC |
535 | struct mlx4_ib_create_qp *ucmd) |
536 | { | |
83904132 JM |
537 | /* Sanity check SQ size before proceeding */ |
538 | if ((1 << ucmd->log_sq_bb_count) > dev->dev->caps.max_wqes || | |
539 | ucmd->log_sq_stride > | |
540 | ilog2(roundup_pow_of_two(dev->dev->caps.max_sq_desc_sz)) || | |
541 | ucmd->log_sq_stride < MLX4_IB_MIN_SQ_STRIDE) | |
542 | return -EINVAL; | |
543 | ||
0e6e7416 | 544 | qp->sq.wqe_cnt = 1 << ucmd->log_sq_bb_count; |
2446304d EC |
545 | qp->sq.wqe_shift = ucmd->log_sq_stride; |
546 | ||
0e6e7416 RD |
547 | qp->buf_size = (qp->rq.wqe_cnt << qp->rq.wqe_shift) + |
548 | (qp->sq.wqe_cnt << qp->sq.wqe_shift); | |
2446304d EC |
549 | |
550 | return 0; | |
551 | } | |
552 | ||
1ffeb2eb JM |
553 | static int alloc_proxy_bufs(struct ib_device *dev, struct mlx4_ib_qp *qp) |
554 | { | |
555 | int i; | |
556 | ||
557 | qp->sqp_proxy_rcv = | |
558 | kmalloc(sizeof (struct mlx4_ib_buf) * qp->rq.wqe_cnt, | |
559 | GFP_KERNEL); | |
560 | if (!qp->sqp_proxy_rcv) | |
561 | return -ENOMEM; | |
562 | for (i = 0; i < qp->rq.wqe_cnt; i++) { | |
563 | qp->sqp_proxy_rcv[i].addr = | |
564 | kmalloc(sizeof (struct mlx4_ib_proxy_sqp_hdr), | |
565 | GFP_KERNEL); | |
566 | if (!qp->sqp_proxy_rcv[i].addr) | |
567 | goto err; | |
568 | qp->sqp_proxy_rcv[i].map = | |
569 | ib_dma_map_single(dev, qp->sqp_proxy_rcv[i].addr, | |
570 | sizeof (struct mlx4_ib_proxy_sqp_hdr), | |
571 | DMA_FROM_DEVICE); | |
cc47d369 SO |
572 | if (ib_dma_mapping_error(dev, qp->sqp_proxy_rcv[i].map)) { |
573 | kfree(qp->sqp_proxy_rcv[i].addr); | |
574 | goto err; | |
575 | } | |
1ffeb2eb JM |
576 | } |
577 | return 0; | |
578 | ||
579 | err: | |
580 | while (i > 0) { | |
581 | --i; | |
582 | ib_dma_unmap_single(dev, qp->sqp_proxy_rcv[i].map, | |
583 | sizeof (struct mlx4_ib_proxy_sqp_hdr), | |
584 | DMA_FROM_DEVICE); | |
585 | kfree(qp->sqp_proxy_rcv[i].addr); | |
586 | } | |
587 | kfree(qp->sqp_proxy_rcv); | |
588 | qp->sqp_proxy_rcv = NULL; | |
589 | return -ENOMEM; | |
590 | } | |
591 | ||
592 | static void free_proxy_bufs(struct ib_device *dev, struct mlx4_ib_qp *qp) | |
593 | { | |
594 | int i; | |
595 | ||
596 | for (i = 0; i < qp->rq.wqe_cnt; i++) { | |
597 | ib_dma_unmap_single(dev, qp->sqp_proxy_rcv[i].map, | |
598 | sizeof (struct mlx4_ib_proxy_sqp_hdr), | |
599 | DMA_FROM_DEVICE); | |
600 | kfree(qp->sqp_proxy_rcv[i].addr); | |
601 | } | |
602 | kfree(qp->sqp_proxy_rcv); | |
603 | } | |
604 | ||
0a1405da SH |
605 | static int qp_has_rq(struct ib_qp_init_attr *attr) |
606 | { | |
607 | if (attr->qp_type == IB_QPT_XRC_INI || attr->qp_type == IB_QPT_XRC_TGT) | |
608 | return 0; | |
609 | ||
610 | return !attr->srq; | |
611 | } | |
612 | ||
99ec41d0 JM |
613 | static int qp0_enabled_vf(struct mlx4_dev *dev, int qpn) |
614 | { | |
615 | int i; | |
616 | for (i = 0; i < dev->caps.num_ports; i++) { | |
617 | if (qpn == dev->caps.qp0_proxy[i]) | |
618 | return !!dev->caps.qp0_qkey[i]; | |
619 | } | |
620 | return 0; | |
621 | } | |
622 | ||
7b59f0f9 EBE |
623 | static void mlx4_ib_free_qp_counter(struct mlx4_ib_dev *dev, |
624 | struct mlx4_ib_qp *qp) | |
625 | { | |
626 | mutex_lock(&dev->counters_table[qp->port - 1].mutex); | |
627 | mlx4_counter_free(dev->dev, qp->counter_index->index); | |
628 | list_del(&qp->counter_index->list); | |
629 | mutex_unlock(&dev->counters_table[qp->port - 1].mutex); | |
630 | ||
631 | kfree(qp->counter_index); | |
632 | qp->counter_index = NULL; | |
633 | } | |
634 | ||
225c7b1f RD |
635 | static int create_qp_common(struct mlx4_ib_dev *dev, struct ib_pd *pd, |
636 | struct ib_qp_init_attr *init_attr, | |
8900b894 LR |
637 | struct ib_udata *udata, int sqpn, |
638 | struct mlx4_ib_qp **caller_qp) | |
225c7b1f | 639 | { |
a3cdcbfa | 640 | int qpn; |
225c7b1f | 641 | int err; |
73898db0 | 642 | struct ib_qp_cap backup_cap; |
b42dde47 | 643 | struct mlx4_ib_sqp *sqp = NULL; |
1ffeb2eb JM |
644 | struct mlx4_ib_qp *qp; |
645 | enum mlx4_ib_qp_type qp_type = (enum mlx4_ib_qp_type) init_attr->qp_type; | |
35f05dab YH |
646 | struct mlx4_ib_cq *mcq; |
647 | unsigned long flags; | |
1ffeb2eb JM |
648 | |
649 | /* When tunneling special qps, we use a plain UD qp */ | |
650 | if (sqpn) { | |
651 | if (mlx4_is_mfunc(dev->dev) && | |
652 | (!mlx4_is_master(dev->dev) || | |
653 | !(init_attr->create_flags & MLX4_IB_SRIOV_SQP))) { | |
654 | if (init_attr->qp_type == IB_QPT_GSI) | |
655 | qp_type = MLX4_IB_QPT_PROXY_GSI; | |
99ec41d0 JM |
656 | else { |
657 | if (mlx4_is_master(dev->dev) || | |
658 | qp0_enabled_vf(dev->dev, sqpn)) | |
659 | qp_type = MLX4_IB_QPT_PROXY_SMI_OWNER; | |
660 | else | |
661 | qp_type = MLX4_IB_QPT_PROXY_SMI; | |
662 | } | |
1ffeb2eb JM |
663 | } |
664 | qpn = sqpn; | |
665 | /* add extra sg entry for tunneling */ | |
666 | init_attr->cap.max_recv_sge++; | |
667 | } else if (init_attr->create_flags & MLX4_IB_SRIOV_TUNNEL_QP) { | |
668 | struct mlx4_ib_qp_tunnel_init_attr *tnl_init = | |
669 | container_of(init_attr, | |
670 | struct mlx4_ib_qp_tunnel_init_attr, init_attr); | |
671 | if ((tnl_init->proxy_qp_type != IB_QPT_SMI && | |
672 | tnl_init->proxy_qp_type != IB_QPT_GSI) || | |
673 | !mlx4_is_master(dev->dev)) | |
674 | return -EINVAL; | |
675 | if (tnl_init->proxy_qp_type == IB_QPT_GSI) | |
676 | qp_type = MLX4_IB_QPT_TUN_GSI; | |
99ec41d0 JM |
677 | else if (tnl_init->slave == mlx4_master_func_num(dev->dev) || |
678 | mlx4_vf_smi_enabled(dev->dev, tnl_init->slave, | |
679 | tnl_init->port)) | |
1ffeb2eb JM |
680 | qp_type = MLX4_IB_QPT_TUN_SMI_OWNER; |
681 | else | |
682 | qp_type = MLX4_IB_QPT_TUN_SMI; | |
47605df9 JM |
683 | /* we are definitely in the PPF here, since we are creating |
684 | * tunnel QPs. base_tunnel_sqpn is therefore valid. */ | |
685 | qpn = dev->dev->phys_caps.base_tunnel_sqpn + 8 * tnl_init->slave | |
686 | + tnl_init->proxy_qp_type * 2 + tnl_init->port - 1; | |
1ffeb2eb JM |
687 | sqpn = qpn; |
688 | } | |
689 | ||
690 | if (!*caller_qp) { | |
691 | if (qp_type == MLX4_IB_QPT_SMI || qp_type == MLX4_IB_QPT_GSI || | |
692 | (qp_type & (MLX4_IB_QPT_PROXY_SMI | MLX4_IB_QPT_PROXY_SMI_OWNER | | |
693 | MLX4_IB_QPT_PROXY_GSI | MLX4_IB_QPT_TUN_SMI_OWNER))) { | |
8900b894 | 694 | sqp = kzalloc(sizeof(struct mlx4_ib_sqp), GFP_KERNEL); |
1ffeb2eb JM |
695 | if (!sqp) |
696 | return -ENOMEM; | |
697 | qp = &sqp->qp; | |
2f5bb473 JM |
698 | qp->pri.vid = 0xFFFF; |
699 | qp->alt.vid = 0xFFFF; | |
1ffeb2eb | 700 | } else { |
8900b894 | 701 | qp = kzalloc(sizeof(struct mlx4_ib_qp), GFP_KERNEL); |
1ffeb2eb JM |
702 | if (!qp) |
703 | return -ENOMEM; | |
2f5bb473 JM |
704 | qp->pri.vid = 0xFFFF; |
705 | qp->alt.vid = 0xFFFF; | |
1ffeb2eb JM |
706 | } |
707 | } else | |
708 | qp = *caller_qp; | |
709 | ||
710 | qp->mlx4_ib_qp_type = qp_type; | |
225c7b1f RD |
711 | |
712 | mutex_init(&qp->mutex); | |
713 | spin_lock_init(&qp->sq.lock); | |
714 | spin_lock_init(&qp->rq.lock); | |
fa417f7b | 715 | INIT_LIST_HEAD(&qp->gid_list); |
0ff1fb65 | 716 | INIT_LIST_HEAD(&qp->steering_rules); |
225c7b1f RD |
717 | |
718 | qp->state = IB_QPS_RESET; | |
ea54b10c JM |
719 | if (init_attr->sq_sig_type == IB_SIGNAL_ALL_WR) |
720 | qp->sq_signal_bits = cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE); | |
225c7b1f | 721 | |
0a1405da | 722 | err = set_rq_size(dev, &init_attr->cap, !!pd->uobject, qp_has_rq(init_attr), qp); |
225c7b1f RD |
723 | if (err) |
724 | goto err; | |
725 | ||
726 | if (pd->uobject) { | |
727 | struct mlx4_ib_create_qp ucmd; | |
728 | ||
729 | if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) { | |
730 | err = -EFAULT; | |
731 | goto err; | |
732 | } | |
733 | ||
0e6e7416 RD |
734 | qp->sq_no_prefetch = ucmd.sq_no_prefetch; |
735 | ||
83904132 | 736 | err = set_user_sq_size(dev, qp, &ucmd); |
2446304d EC |
737 | if (err) |
738 | goto err; | |
739 | ||
225c7b1f | 740 | qp->umem = ib_umem_get(pd->uobject->context, ucmd.buf_addr, |
cb9fbc5c | 741 | qp->buf_size, 0, 0); |
225c7b1f RD |
742 | if (IS_ERR(qp->umem)) { |
743 | err = PTR_ERR(qp->umem); | |
744 | goto err; | |
745 | } | |
746 | ||
747 | err = mlx4_mtt_init(dev->dev, ib_umem_page_count(qp->umem), | |
3e7e1193 | 748 | qp->umem->page_shift, &qp->mtt); |
225c7b1f RD |
749 | if (err) |
750 | goto err_buf; | |
751 | ||
752 | err = mlx4_ib_umem_write_mtt(dev, &qp->mtt, qp->umem); | |
753 | if (err) | |
754 | goto err_mtt; | |
755 | ||
0a1405da | 756 | if (qp_has_rq(init_attr)) { |
02d89b87 RD |
757 | err = mlx4_ib_db_map_user(to_mucontext(pd->uobject->context), |
758 | ucmd.db_addr, &qp->db); | |
759 | if (err) | |
760 | goto err_mtt; | |
761 | } | |
225c7b1f | 762 | } else { |
0e6e7416 RD |
763 | qp->sq_no_prefetch = 0; |
764 | ||
b832be1e EC |
765 | if (init_attr->create_flags & IB_QP_CREATE_IPOIB_UD_LSO) |
766 | qp->flags |= MLX4_IB_QP_LSO; | |
767 | ||
c1c98501 MB |
768 | if (init_attr->create_flags & IB_QP_CREATE_NETIF_QP) { |
769 | if (dev->steering_support == | |
770 | MLX4_STEERING_MODE_DEVICE_MANAGED) | |
771 | qp->flags |= MLX4_IB_QP_NETIF; | |
772 | else | |
773 | goto err; | |
774 | } | |
775 | ||
73898db0 HA |
776 | memcpy(&backup_cap, &init_attr->cap, sizeof(backup_cap)); |
777 | err = set_kernel_sq_size(dev, &init_attr->cap, | |
778 | qp_type, qp, true); | |
2446304d EC |
779 | if (err) |
780 | goto err; | |
781 | ||
0a1405da | 782 | if (qp_has_rq(init_attr)) { |
8900b894 | 783 | err = mlx4_db_alloc(dev->dev, &qp->db, 0); |
02d89b87 RD |
784 | if (err) |
785 | goto err; | |
225c7b1f | 786 | |
02d89b87 RD |
787 | *qp->db.db = 0; |
788 | } | |
225c7b1f | 789 | |
73898db0 | 790 | if (mlx4_buf_alloc(dev->dev, qp->buf_size, qp->buf_size, |
8900b894 | 791 | &qp->buf)) { |
73898db0 HA |
792 | memcpy(&init_attr->cap, &backup_cap, |
793 | sizeof(backup_cap)); | |
794 | err = set_kernel_sq_size(dev, &init_attr->cap, qp_type, | |
795 | qp, false); | |
796 | if (err) | |
797 | goto err_db; | |
798 | ||
799 | if (mlx4_buf_alloc(dev->dev, qp->buf_size, | |
8900b894 | 800 | PAGE_SIZE * 2, &qp->buf)) { |
73898db0 HA |
801 | err = -ENOMEM; |
802 | goto err_db; | |
803 | } | |
225c7b1f RD |
804 | } |
805 | ||
806 | err = mlx4_mtt_init(dev->dev, qp->buf.npages, qp->buf.page_shift, | |
807 | &qp->mtt); | |
808 | if (err) | |
809 | goto err_buf; | |
810 | ||
8900b894 | 811 | err = mlx4_buf_write_mtt(dev->dev, &qp->mtt, &qp->buf); |
225c7b1f RD |
812 | if (err) |
813 | goto err_mtt; | |
814 | ||
ee370950 | 815 | qp->sq.wrid = kmalloc_array(qp->sq.wqe_cnt, sizeof(u64), |
8900b894 | 816 | GFP_KERNEL | __GFP_NOWARN); |
0ef2f05c WW |
817 | if (!qp->sq.wrid) |
818 | qp->sq.wrid = __vmalloc(qp->sq.wqe_cnt * sizeof(u64), | |
8900b894 | 819 | GFP_KERNEL, PAGE_KERNEL); |
ee370950 | 820 | qp->rq.wrid = kmalloc_array(qp->rq.wqe_cnt, sizeof(u64), |
8900b894 | 821 | GFP_KERNEL | __GFP_NOWARN); |
0ef2f05c WW |
822 | if (!qp->rq.wrid) |
823 | qp->rq.wrid = __vmalloc(qp->rq.wqe_cnt * sizeof(u64), | |
8900b894 | 824 | GFP_KERNEL, PAGE_KERNEL); |
225c7b1f RD |
825 | if (!qp->sq.wrid || !qp->rq.wrid) { |
826 | err = -ENOMEM; | |
827 | goto err_wrid; | |
828 | } | |
225c7b1f RD |
829 | } |
830 | ||
a3cdcbfa | 831 | if (sqpn) { |
1ffeb2eb JM |
832 | if (qp->mlx4_ib_qp_type & (MLX4_IB_QPT_PROXY_SMI_OWNER | |
833 | MLX4_IB_QPT_PROXY_SMI | MLX4_IB_QPT_PROXY_GSI)) { | |
834 | if (alloc_proxy_bufs(pd->device, qp)) { | |
835 | err = -ENOMEM; | |
836 | goto err_wrid; | |
837 | } | |
838 | } | |
a3cdcbfa | 839 | } else { |
ddae0349 EE |
840 | /* Raw packet QPNs may not have bits 6,7 set in their qp_num; |
841 | * otherwise, the WQE BlueFlame setup flow wrongly causes | |
842 | * VLAN insertion. */ | |
3987a2d3 | 843 | if (init_attr->qp_type == IB_QPT_RAW_PACKET) |
ddae0349 | 844 | err = mlx4_qp_reserve_range(dev->dev, 1, 1, &qpn, |
d57febe1 MB |
845 | (init_attr->cap.max_send_wr ? |
846 | MLX4_RESERVE_ETH_BF_QP : 0) | | |
847 | (init_attr->cap.max_recv_wr ? | |
848 | MLX4_RESERVE_A0_QP : 0)); | |
3987a2d3 | 849 | else |
c1c98501 MB |
850 | if (qp->flags & MLX4_IB_QP_NETIF) |
851 | err = mlx4_ib_steer_qp_alloc(dev, 1, &qpn); | |
852 | else | |
853 | err = mlx4_qp_reserve_range(dev->dev, 1, 1, | |
ddae0349 | 854 | &qpn, 0); |
a3cdcbfa | 855 | if (err) |
1ffeb2eb | 856 | goto err_proxy; |
a3cdcbfa YP |
857 | } |
858 | ||
fbfb6625 EBE |
859 | if (init_attr->create_flags & IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK) |
860 | qp->flags |= MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK; | |
861 | ||
8900b894 | 862 | err = mlx4_qp_alloc(dev->dev, qpn, &qp->mqp); |
225c7b1f | 863 | if (err) |
a3cdcbfa | 864 | goto err_qpn; |
225c7b1f | 865 | |
0a1405da SH |
866 | if (init_attr->qp_type == IB_QPT_XRC_TGT) |
867 | qp->mqp.qpn |= (1 << 23); | |
868 | ||
225c7b1f RD |
869 | /* |
870 | * Hardware wants QPN written in big-endian order (after | |
871 | * shifting) for send doorbell. Precompute this value to save | |
872 | * a little bit when posting sends. | |
873 | */ | |
874 | qp->doorbell_qpn = swab32(qp->mqp.qpn << 8); | |
875 | ||
225c7b1f | 876 | qp->mqp.event = mlx4_ib_qp_event; |
1ffeb2eb JM |
877 | if (!*caller_qp) |
878 | *caller_qp = qp; | |
35f05dab YH |
879 | |
880 | spin_lock_irqsave(&dev->reset_flow_resource_lock, flags); | |
881 | mlx4_ib_lock_cqs(to_mcq(init_attr->send_cq), | |
882 | to_mcq(init_attr->recv_cq)); | |
883 | /* Maintain device to QPs access, needed for further handling | |
884 | * via reset flow | |
885 | */ | |
886 | list_add_tail(&qp->qps_list, &dev->qp_list); | |
887 | /* Maintain CQ to QPs access, needed for further handling | |
888 | * via reset flow | |
889 | */ | |
890 | mcq = to_mcq(init_attr->send_cq); | |
891 | list_add_tail(&qp->cq_send_list, &mcq->send_qp_list); | |
892 | mcq = to_mcq(init_attr->recv_cq); | |
893 | list_add_tail(&qp->cq_recv_list, &mcq->recv_qp_list); | |
894 | mlx4_ib_unlock_cqs(to_mcq(init_attr->send_cq), | |
895 | to_mcq(init_attr->recv_cq)); | |
896 | spin_unlock_irqrestore(&dev->reset_flow_resource_lock, flags); | |
225c7b1f RD |
897 | return 0; |
898 | ||
a3cdcbfa | 899 | err_qpn: |
c1c98501 MB |
900 | if (!sqpn) { |
901 | if (qp->flags & MLX4_IB_QP_NETIF) | |
902 | mlx4_ib_steer_qp_free(dev, qpn, 1); | |
903 | else | |
904 | mlx4_qp_release_range(dev->dev, qpn, 1); | |
905 | } | |
1ffeb2eb JM |
906 | err_proxy: |
907 | if (qp->mlx4_ib_qp_type == MLX4_IB_QPT_PROXY_GSI) | |
908 | free_proxy_bufs(pd->device, qp); | |
225c7b1f | 909 | err_wrid: |
23f1b384 | 910 | if (pd->uobject) { |
0a1405da SH |
911 | if (qp_has_rq(init_attr)) |
912 | mlx4_ib_db_unmap_user(to_mucontext(pd->uobject->context), &qp->db); | |
23f1b384 | 913 | } else { |
0ef2f05c WW |
914 | kvfree(qp->sq.wrid); |
915 | kvfree(qp->rq.wrid); | |
225c7b1f RD |
916 | } |
917 | ||
918 | err_mtt: | |
919 | mlx4_mtt_cleanup(dev->dev, &qp->mtt); | |
920 | ||
921 | err_buf: | |
922 | if (pd->uobject) | |
923 | ib_umem_release(qp->umem); | |
924 | else | |
925 | mlx4_buf_free(dev->dev, qp->buf_size, &qp->buf); | |
926 | ||
927 | err_db: | |
0a1405da | 928 | if (!pd->uobject && qp_has_rq(init_attr)) |
6296883c | 929 | mlx4_db_free(dev->dev, &qp->db); |
225c7b1f RD |
930 | |
931 | err: | |
b42dde47 BVA |
932 | if (sqp) |
933 | kfree(sqp); | |
934 | else if (!*caller_qp) | |
1ffeb2eb | 935 | kfree(qp); |
225c7b1f RD |
936 | return err; |
937 | } | |
938 | ||
939 | static enum mlx4_qp_state to_mlx4_state(enum ib_qp_state state) | |
940 | { | |
941 | switch (state) { | |
942 | case IB_QPS_RESET: return MLX4_QP_STATE_RST; | |
943 | case IB_QPS_INIT: return MLX4_QP_STATE_INIT; | |
944 | case IB_QPS_RTR: return MLX4_QP_STATE_RTR; | |
945 | case IB_QPS_RTS: return MLX4_QP_STATE_RTS; | |
946 | case IB_QPS_SQD: return MLX4_QP_STATE_SQD; | |
947 | case IB_QPS_SQE: return MLX4_QP_STATE_SQER; | |
948 | case IB_QPS_ERR: return MLX4_QP_STATE_ERR; | |
949 | default: return -1; | |
950 | } | |
951 | } | |
952 | ||
953 | static void mlx4_ib_lock_cqs(struct mlx4_ib_cq *send_cq, struct mlx4_ib_cq *recv_cq) | |
338a8fad | 954 | __acquires(&send_cq->lock) __acquires(&recv_cq->lock) |
225c7b1f | 955 | { |
338a8fad | 956 | if (send_cq == recv_cq) { |
35f05dab | 957 | spin_lock(&send_cq->lock); |
338a8fad RD |
958 | __acquire(&recv_cq->lock); |
959 | } else if (send_cq->mcq.cqn < recv_cq->mcq.cqn) { | |
35f05dab | 960 | spin_lock(&send_cq->lock); |
225c7b1f RD |
961 | spin_lock_nested(&recv_cq->lock, SINGLE_DEPTH_NESTING); |
962 | } else { | |
35f05dab | 963 | spin_lock(&recv_cq->lock); |
225c7b1f RD |
964 | spin_lock_nested(&send_cq->lock, SINGLE_DEPTH_NESTING); |
965 | } | |
966 | } | |
967 | ||
968 | static void mlx4_ib_unlock_cqs(struct mlx4_ib_cq *send_cq, struct mlx4_ib_cq *recv_cq) | |
338a8fad | 969 | __releases(&send_cq->lock) __releases(&recv_cq->lock) |
225c7b1f | 970 | { |
338a8fad RD |
971 | if (send_cq == recv_cq) { |
972 | __release(&recv_cq->lock); | |
35f05dab | 973 | spin_unlock(&send_cq->lock); |
338a8fad | 974 | } else if (send_cq->mcq.cqn < recv_cq->mcq.cqn) { |
225c7b1f | 975 | spin_unlock(&recv_cq->lock); |
35f05dab | 976 | spin_unlock(&send_cq->lock); |
225c7b1f RD |
977 | } else { |
978 | spin_unlock(&send_cq->lock); | |
35f05dab | 979 | spin_unlock(&recv_cq->lock); |
225c7b1f RD |
980 | } |
981 | } | |
982 | ||
fa417f7b EC |
983 | static void del_gid_entries(struct mlx4_ib_qp *qp) |
984 | { | |
985 | struct mlx4_ib_gid_entry *ge, *tmp; | |
986 | ||
987 | list_for_each_entry_safe(ge, tmp, &qp->gid_list, list) { | |
988 | list_del(&ge->list); | |
989 | kfree(ge); | |
990 | } | |
991 | } | |
992 | ||
0a1405da SH |
993 | static struct mlx4_ib_pd *get_pd(struct mlx4_ib_qp *qp) |
994 | { | |
995 | if (qp->ibqp.qp_type == IB_QPT_XRC_TGT) | |
996 | return to_mpd(to_mxrcd(qp->ibqp.xrcd)->pd); | |
997 | else | |
998 | return to_mpd(qp->ibqp.pd); | |
999 | } | |
1000 | ||
1001 | static void get_cqs(struct mlx4_ib_qp *qp, | |
1002 | struct mlx4_ib_cq **send_cq, struct mlx4_ib_cq **recv_cq) | |
1003 | { | |
1004 | switch (qp->ibqp.qp_type) { | |
1005 | case IB_QPT_XRC_TGT: | |
1006 | *send_cq = to_mcq(to_mxrcd(qp->ibqp.xrcd)->cq); | |
1007 | *recv_cq = *send_cq; | |
1008 | break; | |
1009 | case IB_QPT_XRC_INI: | |
1010 | *send_cq = to_mcq(qp->ibqp.send_cq); | |
1011 | *recv_cq = *send_cq; | |
1012 | break; | |
1013 | default: | |
1014 | *send_cq = to_mcq(qp->ibqp.send_cq); | |
1015 | *recv_cq = to_mcq(qp->ibqp.recv_cq); | |
1016 | break; | |
1017 | } | |
1018 | } | |
1019 | ||
225c7b1f RD |
1020 | static void destroy_qp_common(struct mlx4_ib_dev *dev, struct mlx4_ib_qp *qp, |
1021 | int is_user) | |
1022 | { | |
1023 | struct mlx4_ib_cq *send_cq, *recv_cq; | |
35f05dab | 1024 | unsigned long flags; |
225c7b1f | 1025 | |
2f5bb473 | 1026 | if (qp->state != IB_QPS_RESET) { |
225c7b1f RD |
1027 | if (mlx4_qp_modify(dev->dev, NULL, to_mlx4_state(qp->state), |
1028 | MLX4_QP_STATE_RST, NULL, 0, 0, &qp->mqp)) | |
987c8f8f | 1029 | pr_warn("modify QP %06x to RESET failed.\n", |
225c7b1f | 1030 | qp->mqp.qpn); |
25476b02 | 1031 | if (qp->pri.smac || (!qp->pri.smac && qp->pri.smac_port)) { |
2f5bb473 JM |
1032 | mlx4_unregister_mac(dev->dev, qp->pri.smac_port, qp->pri.smac); |
1033 | qp->pri.smac = 0; | |
25476b02 | 1034 | qp->pri.smac_port = 0; |
2f5bb473 JM |
1035 | } |
1036 | if (qp->alt.smac) { | |
1037 | mlx4_unregister_mac(dev->dev, qp->alt.smac_port, qp->alt.smac); | |
1038 | qp->alt.smac = 0; | |
1039 | } | |
1040 | if (qp->pri.vid < 0x1000) { | |
1041 | mlx4_unregister_vlan(dev->dev, qp->pri.vlan_port, qp->pri.vid); | |
1042 | qp->pri.vid = 0xFFFF; | |
1043 | qp->pri.candidate_vid = 0xFFFF; | |
1044 | qp->pri.update_vid = 0; | |
1045 | } | |
1046 | if (qp->alt.vid < 0x1000) { | |
1047 | mlx4_unregister_vlan(dev->dev, qp->alt.vlan_port, qp->alt.vid); | |
1048 | qp->alt.vid = 0xFFFF; | |
1049 | qp->alt.candidate_vid = 0xFFFF; | |
1050 | qp->alt.update_vid = 0; | |
1051 | } | |
1052 | } | |
225c7b1f | 1053 | |
0a1405da | 1054 | get_cqs(qp, &send_cq, &recv_cq); |
225c7b1f | 1055 | |
35f05dab | 1056 | spin_lock_irqsave(&dev->reset_flow_resource_lock, flags); |
225c7b1f RD |
1057 | mlx4_ib_lock_cqs(send_cq, recv_cq); |
1058 | ||
35f05dab YH |
1059 | /* del from lists under both locks above to protect reset flow paths */ |
1060 | list_del(&qp->qps_list); | |
1061 | list_del(&qp->cq_send_list); | |
1062 | list_del(&qp->cq_recv_list); | |
225c7b1f RD |
1063 | if (!is_user) { |
1064 | __mlx4_ib_cq_clean(recv_cq, qp->mqp.qpn, | |
1065 | qp->ibqp.srq ? to_msrq(qp->ibqp.srq): NULL); | |
1066 | if (send_cq != recv_cq) | |
1067 | __mlx4_ib_cq_clean(send_cq, qp->mqp.qpn, NULL); | |
1068 | } | |
1069 | ||
1070 | mlx4_qp_remove(dev->dev, &qp->mqp); | |
1071 | ||
1072 | mlx4_ib_unlock_cqs(send_cq, recv_cq); | |
35f05dab | 1073 | spin_unlock_irqrestore(&dev->reset_flow_resource_lock, flags); |
225c7b1f RD |
1074 | |
1075 | mlx4_qp_free(dev->dev, &qp->mqp); | |
a3cdcbfa | 1076 | |
c1c98501 MB |
1077 | if (!is_sqp(dev, qp) && !is_tunnel_qp(dev, qp)) { |
1078 | if (qp->flags & MLX4_IB_QP_NETIF) | |
1079 | mlx4_ib_steer_qp_free(dev, qp->mqp.qpn, 1); | |
1080 | else | |
1081 | mlx4_qp_release_range(dev->dev, qp->mqp.qpn, 1); | |
1082 | } | |
a3cdcbfa | 1083 | |
225c7b1f RD |
1084 | mlx4_mtt_cleanup(dev->dev, &qp->mtt); |
1085 | ||
1086 | if (is_user) { | |
0a1405da | 1087 | if (qp->rq.wqe_cnt) |
02d89b87 RD |
1088 | mlx4_ib_db_unmap_user(to_mucontext(qp->ibqp.uobject->context), |
1089 | &qp->db); | |
225c7b1f RD |
1090 | ib_umem_release(qp->umem); |
1091 | } else { | |
0ef2f05c WW |
1092 | kvfree(qp->sq.wrid); |
1093 | kvfree(qp->rq.wrid); | |
1ffeb2eb JM |
1094 | if (qp->mlx4_ib_qp_type & (MLX4_IB_QPT_PROXY_SMI_OWNER | |
1095 | MLX4_IB_QPT_PROXY_SMI | MLX4_IB_QPT_PROXY_GSI)) | |
1096 | free_proxy_bufs(&dev->ib_dev, qp); | |
225c7b1f | 1097 | mlx4_buf_free(dev->dev, qp->buf_size, &qp->buf); |
0a1405da | 1098 | if (qp->rq.wqe_cnt) |
6296883c | 1099 | mlx4_db_free(dev->dev, &qp->db); |
225c7b1f | 1100 | } |
fa417f7b EC |
1101 | |
1102 | del_gid_entries(qp); | |
225c7b1f RD |
1103 | } |
1104 | ||
47605df9 JM |
1105 | static u32 get_sqp_num(struct mlx4_ib_dev *dev, struct ib_qp_init_attr *attr) |
1106 | { | |
1107 | /* Native or PPF */ | |
1108 | if (!mlx4_is_mfunc(dev->dev) || | |
1109 | (mlx4_is_master(dev->dev) && | |
1110 | attr->create_flags & MLX4_IB_SRIOV_SQP)) { | |
1111 | return dev->dev->phys_caps.base_sqpn + | |
1112 | (attr->qp_type == IB_QPT_SMI ? 0 : 2) + | |
1113 | attr->port_num - 1; | |
1114 | } | |
1115 | /* PF or VF -- creating proxies */ | |
1116 | if (attr->qp_type == IB_QPT_SMI) | |
1117 | return dev->dev->caps.qp0_proxy[attr->port_num - 1]; | |
1118 | else | |
1119 | return dev->dev->caps.qp1_proxy[attr->port_num - 1]; | |
1120 | } | |
1121 | ||
e1b866c6 MS |
1122 | static struct ib_qp *_mlx4_ib_create_qp(struct ib_pd *pd, |
1123 | struct ib_qp_init_attr *init_attr, | |
1124 | struct ib_udata *udata) | |
225c7b1f | 1125 | { |
1ffeb2eb | 1126 | struct mlx4_ib_qp *qp = NULL; |
225c7b1f | 1127 | int err; |
fbfb6625 | 1128 | int sup_u_create_flags = MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK; |
0a1405da | 1129 | u16 xrcdn = 0; |
225c7b1f | 1130 | |
521e575b | 1131 | /* |
1ffeb2eb JM |
1132 | * We only support LSO, vendor flag1, and multicast loopback blocking, |
1133 | * and only for kernel UD QPs. | |
521e575b | 1134 | */ |
1ffeb2eb JM |
1135 | if (init_attr->create_flags & ~(MLX4_IB_QP_LSO | |
1136 | MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK | | |
c1c98501 MB |
1137 | MLX4_IB_SRIOV_TUNNEL_QP | |
1138 | MLX4_IB_SRIOV_SQP | | |
40f2287b | 1139 | MLX4_IB_QP_NETIF | |
8900b894 | 1140 | MLX4_IB_QP_CREATE_ROCE_V2_GSI)) |
b832be1e | 1141 | return ERR_PTR(-EINVAL); |
521e575b | 1142 | |
c1c98501 MB |
1143 | if (init_attr->create_flags & IB_QP_CREATE_NETIF_QP) { |
1144 | if (init_attr->qp_type != IB_QPT_UD) | |
1145 | return ERR_PTR(-EINVAL); | |
1146 | } | |
1147 | ||
e1b866c6 MS |
1148 | if (init_attr->create_flags) { |
1149 | if (udata && init_attr->create_flags & ~(sup_u_create_flags)) | |
1150 | return ERR_PTR(-EINVAL); | |
1151 | ||
1152 | if ((init_attr->create_flags & ~(MLX4_IB_SRIOV_SQP | | |
e1b866c6 MS |
1153 | MLX4_IB_QP_CREATE_ROCE_V2_GSI | |
1154 | MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK) && | |
1155 | init_attr->qp_type != IB_QPT_UD) || | |
1156 | (init_attr->create_flags & MLX4_IB_SRIOV_SQP && | |
1157 | init_attr->qp_type > IB_QPT_GSI) || | |
1158 | (init_attr->create_flags & MLX4_IB_QP_CREATE_ROCE_V2_GSI && | |
1159 | init_attr->qp_type != IB_QPT_GSI)) | |
1160 | return ERR_PTR(-EINVAL); | |
1161 | } | |
b846f25a | 1162 | |
225c7b1f | 1163 | switch (init_attr->qp_type) { |
0a1405da SH |
1164 | case IB_QPT_XRC_TGT: |
1165 | pd = to_mxrcd(init_attr->xrcd)->pd; | |
1166 | xrcdn = to_mxrcd(init_attr->xrcd)->xrcdn; | |
1167 | init_attr->send_cq = to_mxrcd(init_attr->xrcd)->cq; | |
1168 | /* fall through */ | |
1169 | case IB_QPT_XRC_INI: | |
1170 | if (!(to_mdev(pd->device)->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC)) | |
1171 | return ERR_PTR(-ENOSYS); | |
1172 | init_attr->recv_cq = init_attr->send_cq; | |
1173 | /* fall through */ | |
225c7b1f RD |
1174 | case IB_QPT_RC: |
1175 | case IB_QPT_UC: | |
3987a2d3 | 1176 | case IB_QPT_RAW_PACKET: |
8900b894 | 1177 | qp = kzalloc(sizeof(*qp), GFP_KERNEL); |
225c7b1f RD |
1178 | if (!qp) |
1179 | return ERR_PTR(-ENOMEM); | |
2f5bb473 JM |
1180 | qp->pri.vid = 0xFFFF; |
1181 | qp->alt.vid = 0xFFFF; | |
1ffeb2eb JM |
1182 | /* fall through */ |
1183 | case IB_QPT_UD: | |
1184 | { | |
1185 | err = create_qp_common(to_mdev(pd->device), pd, init_attr, | |
8900b894 | 1186 | udata, 0, &qp); |
5b420d9c DB |
1187 | if (err) { |
1188 | kfree(qp); | |
225c7b1f | 1189 | return ERR_PTR(err); |
5b420d9c | 1190 | } |
225c7b1f RD |
1191 | |
1192 | qp->ibqp.qp_num = qp->mqp.qpn; | |
0a1405da | 1193 | qp->xrcdn = xrcdn; |
225c7b1f RD |
1194 | |
1195 | break; | |
1196 | } | |
1197 | case IB_QPT_SMI: | |
1198 | case IB_QPT_GSI: | |
1199 | { | |
e1b866c6 MS |
1200 | int sqpn; |
1201 | ||
225c7b1f | 1202 | /* Userspace is not allowed to create special QPs: */ |
0a1405da | 1203 | if (udata) |
225c7b1f | 1204 | return ERR_PTR(-EINVAL); |
e1b866c6 MS |
1205 | if (init_attr->create_flags & MLX4_IB_QP_CREATE_ROCE_V2_GSI) { |
1206 | int res = mlx4_qp_reserve_range(to_mdev(pd->device)->dev, 1, 1, &sqpn, 0); | |
1207 | ||
1208 | if (res) | |
1209 | return ERR_PTR(res); | |
1210 | } else { | |
1211 | sqpn = get_sqp_num(to_mdev(pd->device), init_attr); | |
1212 | } | |
225c7b1f | 1213 | |
0a1405da | 1214 | err = create_qp_common(to_mdev(pd->device), pd, init_attr, udata, |
8900b894 | 1215 | sqpn, &qp); |
1ffeb2eb | 1216 | if (err) |
225c7b1f | 1217 | return ERR_PTR(err); |
225c7b1f RD |
1218 | |
1219 | qp->port = init_attr->port_num; | |
e1b866c6 MS |
1220 | qp->ibqp.qp_num = init_attr->qp_type == IB_QPT_SMI ? 0 : |
1221 | init_attr->create_flags & MLX4_IB_QP_CREATE_ROCE_V2_GSI ? sqpn : 1; | |
225c7b1f RD |
1222 | break; |
1223 | } | |
1224 | default: | |
1225 | /* Don't support raw QPs */ | |
1226 | return ERR_PTR(-EINVAL); | |
1227 | } | |
1228 | ||
1229 | return &qp->ibqp; | |
1230 | } | |
1231 | ||
e1b866c6 MS |
1232 | struct ib_qp *mlx4_ib_create_qp(struct ib_pd *pd, |
1233 | struct ib_qp_init_attr *init_attr, | |
1234 | struct ib_udata *udata) { | |
1235 | struct ib_device *device = pd ? pd->device : init_attr->xrcd->device; | |
1236 | struct ib_qp *ibqp; | |
1237 | struct mlx4_ib_dev *dev = to_mdev(device); | |
1238 | ||
1239 | ibqp = _mlx4_ib_create_qp(pd, init_attr, udata); | |
1240 | ||
1241 | if (!IS_ERR(ibqp) && | |
1242 | (init_attr->qp_type == IB_QPT_GSI) && | |
1243 | !(init_attr->create_flags & MLX4_IB_QP_CREATE_ROCE_V2_GSI)) { | |
1244 | struct mlx4_ib_sqp *sqp = to_msqp((to_mqp(ibqp))); | |
1245 | int is_eth = rdma_cap_eth_ah(&dev->ib_dev, init_attr->port_num); | |
1246 | ||
1247 | if (is_eth && | |
1248 | dev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2) { | |
1249 | init_attr->create_flags |= MLX4_IB_QP_CREATE_ROCE_V2_GSI; | |
1250 | sqp->roce_v2_gsi = ib_create_qp(pd, init_attr); | |
1251 | ||
1252 | if (IS_ERR(sqp->roce_v2_gsi)) { | |
1253 | pr_err("Failed to create GSI QP for RoCEv2 (%ld)\n", PTR_ERR(sqp->roce_v2_gsi)); | |
1254 | sqp->roce_v2_gsi = NULL; | |
1255 | } else { | |
1256 | sqp = to_msqp(to_mqp(sqp->roce_v2_gsi)); | |
1257 | sqp->qp.flags |= MLX4_IB_ROCE_V2_GSI_QP; | |
1258 | } | |
1259 | ||
1260 | init_attr->create_flags &= ~MLX4_IB_QP_CREATE_ROCE_V2_GSI; | |
1261 | } | |
1262 | } | |
1263 | return ibqp; | |
1264 | } | |
1265 | ||
1266 | static int _mlx4_ib_destroy_qp(struct ib_qp *qp) | |
225c7b1f RD |
1267 | { |
1268 | struct mlx4_ib_dev *dev = to_mdev(qp->device); | |
1269 | struct mlx4_ib_qp *mqp = to_mqp(qp); | |
0a1405da | 1270 | struct mlx4_ib_pd *pd; |
225c7b1f RD |
1271 | |
1272 | if (is_qp0(dev, mqp)) | |
1273 | mlx4_CLOSE_PORT(dev->dev, mqp->port); | |
1274 | ||
c482af64 JM |
1275 | if (mqp->mlx4_ib_qp_type == MLX4_IB_QPT_PROXY_GSI && |
1276 | dev->qp1_proxy[mqp->port - 1] == mqp) { | |
9433c188 MB |
1277 | mutex_lock(&dev->qp1_proxy_lock[mqp->port - 1]); |
1278 | dev->qp1_proxy[mqp->port - 1] = NULL; | |
1279 | mutex_unlock(&dev->qp1_proxy_lock[mqp->port - 1]); | |
1280 | } | |
1281 | ||
7b59f0f9 EBE |
1282 | if (mqp->counter_index) |
1283 | mlx4_ib_free_qp_counter(dev, mqp); | |
1284 | ||
0a1405da SH |
1285 | pd = get_pd(mqp); |
1286 | destroy_qp_common(dev, mqp, !!pd->ibpd.uobject); | |
225c7b1f RD |
1287 | |
1288 | if (is_sqp(dev, mqp)) | |
1289 | kfree(to_msqp(mqp)); | |
1290 | else | |
1291 | kfree(mqp); | |
1292 | ||
1293 | return 0; | |
1294 | } | |
1295 | ||
e1b866c6 MS |
1296 | int mlx4_ib_destroy_qp(struct ib_qp *qp) |
1297 | { | |
1298 | struct mlx4_ib_qp *mqp = to_mqp(qp); | |
1299 | ||
1300 | if (mqp->mlx4_ib_qp_type == MLX4_IB_QPT_GSI) { | |
1301 | struct mlx4_ib_sqp *sqp = to_msqp(mqp); | |
1302 | ||
1303 | if (sqp->roce_v2_gsi) | |
1304 | ib_destroy_qp(sqp->roce_v2_gsi); | |
1305 | } | |
1306 | ||
1307 | return _mlx4_ib_destroy_qp(qp); | |
1308 | } | |
1309 | ||
1ffeb2eb | 1310 | static int to_mlx4_st(struct mlx4_ib_dev *dev, enum mlx4_ib_qp_type type) |
225c7b1f RD |
1311 | { |
1312 | switch (type) { | |
1ffeb2eb JM |
1313 | case MLX4_IB_QPT_RC: return MLX4_QP_ST_RC; |
1314 | case MLX4_IB_QPT_UC: return MLX4_QP_ST_UC; | |
1315 | case MLX4_IB_QPT_UD: return MLX4_QP_ST_UD; | |
1316 | case MLX4_IB_QPT_XRC_INI: | |
1317 | case MLX4_IB_QPT_XRC_TGT: return MLX4_QP_ST_XRC; | |
1318 | case MLX4_IB_QPT_SMI: | |
1319 | case MLX4_IB_QPT_GSI: | |
1320 | case MLX4_IB_QPT_RAW_PACKET: return MLX4_QP_ST_MLX; | |
1321 | ||
1322 | case MLX4_IB_QPT_PROXY_SMI_OWNER: | |
1323 | case MLX4_IB_QPT_TUN_SMI_OWNER: return (mlx4_is_mfunc(dev->dev) ? | |
1324 | MLX4_QP_ST_MLX : -1); | |
1325 | case MLX4_IB_QPT_PROXY_SMI: | |
1326 | case MLX4_IB_QPT_TUN_SMI: | |
1327 | case MLX4_IB_QPT_PROXY_GSI: | |
1328 | case MLX4_IB_QPT_TUN_GSI: return (mlx4_is_mfunc(dev->dev) ? | |
1329 | MLX4_QP_ST_UD : -1); | |
1330 | default: return -1; | |
225c7b1f RD |
1331 | } |
1332 | } | |
1333 | ||
65adfa91 | 1334 | static __be32 to_mlx4_access_flags(struct mlx4_ib_qp *qp, const struct ib_qp_attr *attr, |
225c7b1f RD |
1335 | int attr_mask) |
1336 | { | |
1337 | u8 dest_rd_atomic; | |
1338 | u32 access_flags; | |
1339 | u32 hw_access_flags = 0; | |
1340 | ||
1341 | if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC) | |
1342 | dest_rd_atomic = attr->max_dest_rd_atomic; | |
1343 | else | |
1344 | dest_rd_atomic = qp->resp_depth; | |
1345 | ||
1346 | if (attr_mask & IB_QP_ACCESS_FLAGS) | |
1347 | access_flags = attr->qp_access_flags; | |
1348 | else | |
1349 | access_flags = qp->atomic_rd_en; | |
1350 | ||
1351 | if (!dest_rd_atomic) | |
1352 | access_flags &= IB_ACCESS_REMOTE_WRITE; | |
1353 | ||
1354 | if (access_flags & IB_ACCESS_REMOTE_READ) | |
1355 | hw_access_flags |= MLX4_QP_BIT_RRE; | |
1356 | if (access_flags & IB_ACCESS_REMOTE_ATOMIC) | |
1357 | hw_access_flags |= MLX4_QP_BIT_RAE; | |
1358 | if (access_flags & IB_ACCESS_REMOTE_WRITE) | |
1359 | hw_access_flags |= MLX4_QP_BIT_RWE; | |
1360 | ||
1361 | return cpu_to_be32(hw_access_flags); | |
1362 | } | |
1363 | ||
65adfa91 | 1364 | static void store_sqp_attrs(struct mlx4_ib_sqp *sqp, const struct ib_qp_attr *attr, |
225c7b1f RD |
1365 | int attr_mask) |
1366 | { | |
1367 | if (attr_mask & IB_QP_PKEY_INDEX) | |
1368 | sqp->pkey_index = attr->pkey_index; | |
1369 | if (attr_mask & IB_QP_QKEY) | |
1370 | sqp->qkey = attr->qkey; | |
1371 | if (attr_mask & IB_QP_SQ_PSN) | |
1372 | sqp->send_psn = attr->sq_psn; | |
1373 | } | |
1374 | ||
1375 | static void mlx4_set_sched(struct mlx4_qp_path *path, u8 port) | |
1376 | { | |
1377 | path->sched_queue = (path->sched_queue & 0xbf) | ((port - 1) << 6); | |
1378 | } | |
1379 | ||
90898850 DC |
1380 | static int _mlx4_set_path(struct mlx4_ib_dev *dev, |
1381 | const struct rdma_ah_attr *ah, | |
297e0dad | 1382 | u64 smac, u16 vlan_tag, struct mlx4_qp_path *path, |
2f5bb473 | 1383 | struct mlx4_roce_smac_vlan_info *smac_info, u8 port) |
225c7b1f | 1384 | { |
4c3eb3ca | 1385 | int vidx; |
297e0dad | 1386 | int smac_index; |
2f5bb473 | 1387 | int err; |
297e0dad | 1388 | |
d8966fcd DC |
1389 | path->grh_mylmc = rdma_ah_get_path_bits(ah) & 0x7f; |
1390 | path->rlid = cpu_to_be16(rdma_ah_get_dlid(ah)); | |
1391 | if (rdma_ah_get_static_rate(ah)) { | |
1392 | path->static_rate = rdma_ah_get_static_rate(ah) + | |
1393 | MLX4_STAT_RATE_OFFSET; | |
225c7b1f RD |
1394 | while (path->static_rate > IB_RATE_2_5_GBPS + MLX4_STAT_RATE_OFFSET && |
1395 | !(1 << path->static_rate & dev->dev->caps.stat_rate_support)) | |
1396 | --path->static_rate; | |
1397 | } else | |
1398 | path->static_rate = 0; | |
225c7b1f | 1399 | |
d8966fcd DC |
1400 | if (rdma_ah_get_ah_flags(ah) & IB_AH_GRH) { |
1401 | const struct ib_global_route *grh = rdma_ah_read_grh(ah); | |
1402 | int real_sgid_index = | |
1403 | mlx4_ib_gid_index_to_real_index(dev, port, | |
1404 | grh->sgid_index); | |
5070cd22 MS |
1405 | |
1406 | if (real_sgid_index >= dev->dev->caps.gid_table_len[port]) { | |
987c8f8f | 1407 | pr_err("sgid_index (%u) too large. max is %d\n", |
5070cd22 | 1408 | real_sgid_index, dev->dev->caps.gid_table_len[port] - 1); |
225c7b1f RD |
1409 | return -1; |
1410 | } | |
1411 | ||
1412 | path->grh_mylmc |= 1 << 7; | |
5070cd22 | 1413 | path->mgid_index = real_sgid_index; |
d8966fcd | 1414 | path->hop_limit = grh->hop_limit; |
225c7b1f | 1415 | path->tclass_flowlabel = |
d8966fcd DC |
1416 | cpu_to_be32((grh->traffic_class << 20) | |
1417 | (grh->flow_label)); | |
1418 | memcpy(path->rgid, grh->dgid.raw, 16); | |
225c7b1f RD |
1419 | } |
1420 | ||
44c58487 | 1421 | if (ah->type == RDMA_AH_ATTR_TYPE_ROCE) { |
d8966fcd | 1422 | if (!(rdma_ah_get_ah_flags(ah) & IB_AH_GRH)) |
fa417f7b EC |
1423 | return -1; |
1424 | ||
2f5bb473 | 1425 | path->sched_queue = MLX4_IB_DEFAULT_SCHED_QUEUE | |
d8966fcd | 1426 | ((port - 1) << 6) | ((rdma_ah_get_sl(ah) & 7) << 3); |
4c3eb3ca | 1427 | |
297e0dad | 1428 | path->feup |= MLX4_FEUP_FORCE_ETH_UP; |
4c3eb3ca | 1429 | if (vlan_tag < 0x1000) { |
2f5bb473 JM |
1430 | if (smac_info->vid < 0x1000) { |
1431 | /* both valid vlan ids */ | |
1432 | if (smac_info->vid != vlan_tag) { | |
1433 | /* different VIDs. unreg old and reg new */ | |
1434 | err = mlx4_register_vlan(dev->dev, port, vlan_tag, &vidx); | |
1435 | if (err) | |
1436 | return err; | |
1437 | smac_info->candidate_vid = vlan_tag; | |
1438 | smac_info->candidate_vlan_index = vidx; | |
1439 | smac_info->candidate_vlan_port = port; | |
1440 | smac_info->update_vid = 1; | |
1441 | path->vlan_index = vidx; | |
1442 | } else { | |
1443 | path->vlan_index = smac_info->vlan_index; | |
1444 | } | |
1445 | } else { | |
1446 | /* no current vlan tag in qp */ | |
1447 | err = mlx4_register_vlan(dev->dev, port, vlan_tag, &vidx); | |
1448 | if (err) | |
1449 | return err; | |
1450 | smac_info->candidate_vid = vlan_tag; | |
1451 | smac_info->candidate_vlan_index = vidx; | |
1452 | smac_info->candidate_vlan_port = port; | |
1453 | smac_info->update_vid = 1; | |
1454 | path->vlan_index = vidx; | |
1455 | } | |
297e0dad | 1456 | path->feup |= MLX4_FVL_FORCE_ETH_VLAN; |
2f5bb473 JM |
1457 | path->fl = 1 << 6; |
1458 | } else { | |
1459 | /* have current vlan tag. unregister it at modify-qp success */ | |
1460 | if (smac_info->vid < 0x1000) { | |
1461 | smac_info->candidate_vid = 0xFFFF; | |
1462 | smac_info->update_vid = 1; | |
1463 | } | |
4c3eb3ca | 1464 | } |
2f5bb473 JM |
1465 | |
1466 | /* get smac_index for RoCE use. | |
1467 | * If no smac was yet assigned, register one. | |
1468 | * If one was already assigned, but the new mac differs, | |
1469 | * unregister the old one and register the new one. | |
1470 | */ | |
25476b02 JM |
1471 | if ((!smac_info->smac && !smac_info->smac_port) || |
1472 | smac_info->smac != smac) { | |
2f5bb473 JM |
1473 | /* register candidate now, unreg if needed, after success */ |
1474 | smac_index = mlx4_register_mac(dev->dev, port, smac); | |
1475 | if (smac_index >= 0) { | |
1476 | smac_info->candidate_smac_index = smac_index; | |
1477 | smac_info->candidate_smac = smac; | |
1478 | smac_info->candidate_smac_port = port; | |
1479 | } else { | |
1480 | return -EINVAL; | |
1481 | } | |
1482 | } else { | |
1483 | smac_index = smac_info->smac_index; | |
1484 | } | |
44c58487 | 1485 | memcpy(path->dmac, ah->roce.dmac, 6); |
2f5bb473 JM |
1486 | path->ackto = MLX4_IB_LINK_TYPE_ETH; |
1487 | /* put MAC table smac index for IBoE */ | |
1488 | path->grh_mylmc = (u8) (smac_index) | 0x80; | |
1489 | } else { | |
4c3eb3ca | 1490 | path->sched_queue = MLX4_IB_DEFAULT_SCHED_QUEUE | |
d8966fcd | 1491 | ((port - 1) << 6) | ((rdma_ah_get_sl(ah) & 0xf) << 2); |
2f5bb473 | 1492 | } |
fa417f7b | 1493 | |
225c7b1f RD |
1494 | return 0; |
1495 | } | |
1496 | ||
297e0dad MS |
1497 | static int mlx4_set_path(struct mlx4_ib_dev *dev, const struct ib_qp_attr *qp, |
1498 | enum ib_qp_attr_mask qp_attr_mask, | |
2f5bb473 | 1499 | struct mlx4_ib_qp *mqp, |
dbf727de MB |
1500 | struct mlx4_qp_path *path, u8 port, |
1501 | u16 vlan_id, u8 *smac) | |
297e0dad MS |
1502 | { |
1503 | return _mlx4_set_path(dev, &qp->ah_attr, | |
dbf727de MB |
1504 | mlx4_mac_to_u64(smac), |
1505 | vlan_id, | |
2f5bb473 | 1506 | path, &mqp->pri, port); |
297e0dad MS |
1507 | } |
1508 | ||
1509 | static int mlx4_set_alt_path(struct mlx4_ib_dev *dev, | |
1510 | const struct ib_qp_attr *qp, | |
1511 | enum ib_qp_attr_mask qp_attr_mask, | |
2f5bb473 | 1512 | struct mlx4_ib_qp *mqp, |
297e0dad MS |
1513 | struct mlx4_qp_path *path, u8 port) |
1514 | { | |
1515 | return _mlx4_set_path(dev, &qp->alt_ah_attr, | |
dbf727de MB |
1516 | 0, |
1517 | 0xffff, | |
2f5bb473 | 1518 | path, &mqp->alt, port); |
297e0dad MS |
1519 | } |
1520 | ||
fa417f7b EC |
1521 | static void update_mcg_macs(struct mlx4_ib_dev *dev, struct mlx4_ib_qp *qp) |
1522 | { | |
1523 | struct mlx4_ib_gid_entry *ge, *tmp; | |
1524 | ||
1525 | list_for_each_entry_safe(ge, tmp, &qp->gid_list, list) { | |
1526 | if (!ge->added && mlx4_ib_add_mc(dev, qp, &ge->gid)) { | |
1527 | ge->added = 1; | |
1528 | ge->port = qp->port; | |
1529 | } | |
1530 | } | |
1531 | } | |
1532 | ||
dbf727de MB |
1533 | static int handle_eth_ud_smac_index(struct mlx4_ib_dev *dev, |
1534 | struct mlx4_ib_qp *qp, | |
2f5bb473 JM |
1535 | struct mlx4_qp_context *context) |
1536 | { | |
2f5bb473 JM |
1537 | u64 u64_mac; |
1538 | int smac_index; | |
1539 | ||
3e0629cb | 1540 | u64_mac = atomic64_read(&dev->iboe.mac[qp->port - 1]); |
2f5bb473 JM |
1541 | |
1542 | context->pri_path.sched_queue = MLX4_IB_DEFAULT_SCHED_QUEUE | ((qp->port - 1) << 6); | |
25476b02 | 1543 | if (!qp->pri.smac && !qp->pri.smac_port) { |
2f5bb473 JM |
1544 | smac_index = mlx4_register_mac(dev->dev, qp->port, u64_mac); |
1545 | if (smac_index >= 0) { | |
1546 | qp->pri.candidate_smac_index = smac_index; | |
1547 | qp->pri.candidate_smac = u64_mac; | |
1548 | qp->pri.candidate_smac_port = qp->port; | |
1549 | context->pri_path.grh_mylmc = 0x80 | (u8) smac_index; | |
1550 | } else { | |
1551 | return -ENOENT; | |
1552 | } | |
1553 | } | |
1554 | return 0; | |
1555 | } | |
1556 | ||
7b59f0f9 EBE |
1557 | static int create_qp_lb_counter(struct mlx4_ib_dev *dev, struct mlx4_ib_qp *qp) |
1558 | { | |
1559 | struct counter_index *new_counter_index; | |
1560 | int err; | |
1561 | u32 tmp_idx; | |
1562 | ||
1563 | if (rdma_port_get_link_layer(&dev->ib_dev, qp->port) != | |
1564 | IB_LINK_LAYER_ETHERNET || | |
1565 | !(qp->flags & MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK) || | |
1566 | !(dev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_LB_SRC_CHK)) | |
1567 | return 0; | |
1568 | ||
1569 | err = mlx4_counter_alloc(dev->dev, &tmp_idx); | |
1570 | if (err) | |
1571 | return err; | |
1572 | ||
1573 | new_counter_index = kmalloc(sizeof(*new_counter_index), GFP_KERNEL); | |
1574 | if (!new_counter_index) { | |
1575 | mlx4_counter_free(dev->dev, tmp_idx); | |
1576 | return -ENOMEM; | |
1577 | } | |
1578 | ||
1579 | new_counter_index->index = tmp_idx; | |
1580 | new_counter_index->allocated = 1; | |
1581 | qp->counter_index = new_counter_index; | |
1582 | ||
1583 | mutex_lock(&dev->counters_table[qp->port - 1].mutex); | |
1584 | list_add_tail(&new_counter_index->list, | |
1585 | &dev->counters_table[qp->port - 1].counters_list); | |
1586 | mutex_unlock(&dev->counters_table[qp->port - 1].mutex); | |
1587 | ||
1588 | return 0; | |
1589 | } | |
1590 | ||
3b5daf28 MS |
1591 | enum { |
1592 | MLX4_QPC_ROCE_MODE_1 = 0, | |
1593 | MLX4_QPC_ROCE_MODE_2 = 2, | |
1594 | MLX4_QPC_ROCE_MODE_UNDEFINED = 0xff | |
1595 | }; | |
1596 | ||
1597 | static u8 gid_type_to_qpc(enum ib_gid_type gid_type) | |
1598 | { | |
1599 | switch (gid_type) { | |
1600 | case IB_GID_TYPE_ROCE: | |
1601 | return MLX4_QPC_ROCE_MODE_1; | |
1602 | case IB_GID_TYPE_ROCE_UDP_ENCAP: | |
1603 | return MLX4_QPC_ROCE_MODE_2; | |
1604 | default: | |
1605 | return MLX4_QPC_ROCE_MODE_UNDEFINED; | |
1606 | } | |
1607 | } | |
1608 | ||
65adfa91 MT |
1609 | static int __mlx4_ib_modify_qp(struct ib_qp *ibqp, |
1610 | const struct ib_qp_attr *attr, int attr_mask, | |
1611 | enum ib_qp_state cur_state, enum ib_qp_state new_state) | |
225c7b1f RD |
1612 | { |
1613 | struct mlx4_ib_dev *dev = to_mdev(ibqp->device); | |
1614 | struct mlx4_ib_qp *qp = to_mqp(ibqp); | |
0a1405da SH |
1615 | struct mlx4_ib_pd *pd; |
1616 | struct mlx4_ib_cq *send_cq, *recv_cq; | |
225c7b1f RD |
1617 | struct mlx4_qp_context *context; |
1618 | enum mlx4_qp_optpar optpar = 0; | |
225c7b1f | 1619 | int sqd_event; |
c1c98501 | 1620 | int steer_qp = 0; |
225c7b1f | 1621 | int err = -EINVAL; |
3ba8e31d | 1622 | int counter_index; |
225c7b1f | 1623 | |
3dec4878 JM |
1624 | /* APM is not supported under RoCE */ |
1625 | if (attr_mask & IB_QP_ALT_PATH && | |
1626 | rdma_port_get_link_layer(&dev->ib_dev, qp->port) == | |
1627 | IB_LINK_LAYER_ETHERNET) | |
1628 | return -ENOTSUPP; | |
1629 | ||
225c7b1f RD |
1630 | context = kzalloc(sizeof *context, GFP_KERNEL); |
1631 | if (!context) | |
1632 | return -ENOMEM; | |
1633 | ||
225c7b1f | 1634 | context->flags = cpu_to_be32((to_mlx4_state(new_state) << 28) | |
1ffeb2eb | 1635 | (to_mlx4_st(dev, qp->mlx4_ib_qp_type) << 16)); |
225c7b1f RD |
1636 | |
1637 | if (!(attr_mask & IB_QP_PATH_MIG_STATE)) | |
1638 | context->flags |= cpu_to_be32(MLX4_QP_PM_MIGRATED << 11); | |
1639 | else { | |
1640 | optpar |= MLX4_QP_OPTPAR_PM_STATE; | |
1641 | switch (attr->path_mig_state) { | |
1642 | case IB_MIG_MIGRATED: | |
1643 | context->flags |= cpu_to_be32(MLX4_QP_PM_MIGRATED << 11); | |
1644 | break; | |
1645 | case IB_MIG_REARM: | |
1646 | context->flags |= cpu_to_be32(MLX4_QP_PM_REARM << 11); | |
1647 | break; | |
1648 | case IB_MIG_ARMED: | |
1649 | context->flags |= cpu_to_be32(MLX4_QP_PM_ARMED << 11); | |
1650 | break; | |
1651 | } | |
1652 | } | |
1653 | ||
b832be1e | 1654 | if (ibqp->qp_type == IB_QPT_GSI || ibqp->qp_type == IB_QPT_SMI) |
225c7b1f | 1655 | context->mtu_msgmax = (IB_MTU_4096 << 5) | 11; |
3987a2d3 OG |
1656 | else if (ibqp->qp_type == IB_QPT_RAW_PACKET) |
1657 | context->mtu_msgmax = (MLX4_RAW_QP_MTU << 5) | MLX4_RAW_QP_MSGMAX; | |
b832be1e EC |
1658 | else if (ibqp->qp_type == IB_QPT_UD) { |
1659 | if (qp->flags & MLX4_IB_QP_LSO) | |
1660 | context->mtu_msgmax = (IB_MTU_4096 << 5) | | |
1661 | ilog2(dev->dev->caps.max_gso_sz); | |
1662 | else | |
6e0d733d | 1663 | context->mtu_msgmax = (IB_MTU_4096 << 5) | 12; |
b832be1e | 1664 | } else if (attr_mask & IB_QP_PATH_MTU) { |
225c7b1f | 1665 | if (attr->path_mtu < IB_MTU_256 || attr->path_mtu > IB_MTU_4096) { |
987c8f8f | 1666 | pr_err("path MTU (%u) is invalid\n", |
225c7b1f | 1667 | attr->path_mtu); |
f5b40431 | 1668 | goto out; |
225c7b1f | 1669 | } |
d1f2cd89 EC |
1670 | context->mtu_msgmax = (attr->path_mtu << 5) | |
1671 | ilog2(dev->dev->caps.max_msg_sz); | |
225c7b1f RD |
1672 | } |
1673 | ||
0e6e7416 RD |
1674 | if (qp->rq.wqe_cnt) |
1675 | context->rq_size_stride = ilog2(qp->rq.wqe_cnt) << 3; | |
225c7b1f RD |
1676 | context->rq_size_stride |= qp->rq.wqe_shift - 4; |
1677 | ||
0e6e7416 RD |
1678 | if (qp->sq.wqe_cnt) |
1679 | context->sq_size_stride = ilog2(qp->sq.wqe_cnt) << 3; | |
225c7b1f RD |
1680 | context->sq_size_stride |= qp->sq.wqe_shift - 4; |
1681 | ||
7b59f0f9 EBE |
1682 | if (new_state == IB_QPS_RESET && qp->counter_index) |
1683 | mlx4_ib_free_qp_counter(dev, qp); | |
1684 | ||
0a1405da | 1685 | if (cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT) { |
0e6e7416 | 1686 | context->sq_size_stride |= !!qp->sq_no_prefetch << 7; |
0a1405da | 1687 | context->xrcd = cpu_to_be32((u32) qp->xrcdn); |
02d7ef6f DB |
1688 | if (ibqp->qp_type == IB_QPT_RAW_PACKET) |
1689 | context->param3 |= cpu_to_be32(1 << 30); | |
0a1405da | 1690 | } |
0e6e7416 | 1691 | |
225c7b1f | 1692 | if (qp->ibqp.uobject) |
85743f1e HN |
1693 | context->usr_page = cpu_to_be32( |
1694 | mlx4_to_hw_uar_index(dev->dev, | |
1695 | to_mucontext(ibqp->uobject->context)->uar.index)); | |
225c7b1f | 1696 | else |
85743f1e HN |
1697 | context->usr_page = cpu_to_be32( |
1698 | mlx4_to_hw_uar_index(dev->dev, dev->priv_uar.index)); | |
225c7b1f RD |
1699 | |
1700 | if (attr_mask & IB_QP_DEST_QPN) | |
1701 | context->remote_qpn = cpu_to_be32(attr->dest_qp_num); | |
1702 | ||
1703 | if (attr_mask & IB_QP_PORT) { | |
1704 | if (cur_state == IB_QPS_SQD && new_state == IB_QPS_SQD && | |
1705 | !(attr_mask & IB_QP_AV)) { | |
1706 | mlx4_set_sched(&context->pri_path, attr->port_num); | |
1707 | optpar |= MLX4_QP_OPTPAR_SCHED_QUEUE; | |
1708 | } | |
1709 | } | |
1710 | ||
cfcde11c | 1711 | if (cur_state == IB_QPS_INIT && new_state == IB_QPS_RTR) { |
7b59f0f9 EBE |
1712 | err = create_qp_lb_counter(dev, qp); |
1713 | if (err) | |
1714 | goto out; | |
1715 | ||
3ba8e31d EBE |
1716 | counter_index = |
1717 | dev->counters_table[qp->port - 1].default_counter; | |
7b59f0f9 EBE |
1718 | if (qp->counter_index) |
1719 | counter_index = qp->counter_index->index; | |
1720 | ||
3ba8e31d EBE |
1721 | if (counter_index != -1) { |
1722 | context->pri_path.counter_index = counter_index; | |
cfcde11c | 1723 | optpar |= MLX4_QP_OPTPAR_COUNTER_INDEX; |
7b59f0f9 EBE |
1724 | if (qp->counter_index) { |
1725 | context->pri_path.fl |= | |
1726 | MLX4_FL_ETH_SRC_CHECK_MC_LB; | |
1727 | context->pri_path.vlan_control |= | |
1728 | MLX4_CTRL_ETH_SRC_CHECK_IF_COUNTER; | |
1729 | } | |
cfcde11c | 1730 | } else |
47d8417f EBE |
1731 | context->pri_path.counter_index = |
1732 | MLX4_SINK_COUNTER_INDEX(dev->dev); | |
c1c98501 MB |
1733 | |
1734 | if (qp->flags & MLX4_IB_QP_NETIF) { | |
1735 | mlx4_ib_steer_qp_reg(dev, qp, 1); | |
1736 | steer_qp = 1; | |
1737 | } | |
e1b866c6 MS |
1738 | |
1739 | if (ibqp->qp_type == IB_QPT_GSI) { | |
1740 | enum ib_gid_type gid_type = qp->flags & MLX4_IB_ROCE_V2_GSI_QP ? | |
1741 | IB_GID_TYPE_ROCE_UDP_ENCAP : IB_GID_TYPE_ROCE; | |
1742 | u8 qpc_roce_mode = gid_type_to_qpc(gid_type); | |
1743 | ||
1744 | context->rlkey_roce_mode |= (qpc_roce_mode << 6); | |
1745 | } | |
cfcde11c OG |
1746 | } |
1747 | ||
225c7b1f | 1748 | if (attr_mask & IB_QP_PKEY_INDEX) { |
1ffeb2eb JM |
1749 | if (qp->mlx4_ib_qp_type & MLX4_IB_QPT_ANY_SRIOV) |
1750 | context->pri_path.disable_pkey_check = 0x40; | |
225c7b1f RD |
1751 | context->pri_path.pkey_index = attr->pkey_index; |
1752 | optpar |= MLX4_QP_OPTPAR_PKEY_INDEX; | |
1753 | } | |
1754 | ||
225c7b1f | 1755 | if (attr_mask & IB_QP_AV) { |
dbf727de MB |
1756 | u8 port_num = mlx4_is_bonded(to_mdev(ibqp->device)->dev) ? 1 : |
1757 | attr_mask & IB_QP_PORT ? attr->port_num : qp->port; | |
1758 | union ib_gid gid; | |
bf08e884 | 1759 | struct ib_gid_attr gid_attr = {.gid_type = IB_GID_TYPE_IB}; |
dbf727de MB |
1760 | u16 vlan = 0xffff; |
1761 | u8 smac[ETH_ALEN]; | |
1762 | int status = 0; | |
d8966fcd DC |
1763 | int is_eth = |
1764 | rdma_cap_eth_ah(&dev->ib_dev, port_num) && | |
1765 | rdma_ah_get_ah_flags(&attr->ah_attr) & IB_AH_GRH; | |
dbf727de | 1766 | |
d8966fcd DC |
1767 | if (is_eth) { |
1768 | int index = | |
1769 | rdma_ah_read_grh(&attr->ah_attr)->sgid_index; | |
dbf727de MB |
1770 | |
1771 | status = ib_get_cached_gid(ibqp->device, port_num, | |
1772 | index, &gid, &gid_attr); | |
1773 | if (!status && !memcmp(&gid, &zgid, sizeof(gid))) | |
1774 | status = -ENOENT; | |
1775 | if (!status && gid_attr.ndev) { | |
1776 | vlan = rdma_vlan_dev_vlan_id(gid_attr.ndev); | |
1777 | memcpy(smac, gid_attr.ndev->dev_addr, ETH_ALEN); | |
1778 | dev_put(gid_attr.ndev); | |
1779 | } | |
1780 | } | |
1781 | if (status) | |
1782 | goto out; | |
1783 | ||
2f5bb473 | 1784 | if (mlx4_set_path(dev, attr, attr_mask, qp, &context->pri_path, |
dbf727de | 1785 | port_num, vlan, smac)) |
225c7b1f | 1786 | goto out; |
225c7b1f RD |
1787 | |
1788 | optpar |= (MLX4_QP_OPTPAR_PRIMARY_ADDR_PATH | | |
1789 | MLX4_QP_OPTPAR_SCHED_QUEUE); | |
3b5daf28 MS |
1790 | |
1791 | if (is_eth && | |
1792 | (cur_state == IB_QPS_INIT && new_state == IB_QPS_RTR)) { | |
1793 | u8 qpc_roce_mode = gid_type_to_qpc(gid_attr.gid_type); | |
1794 | ||
1795 | if (qpc_roce_mode == MLX4_QPC_ROCE_MODE_UNDEFINED) { | |
1796 | err = -EINVAL; | |
1797 | goto out; | |
1798 | } | |
1799 | context->rlkey_roce_mode |= (qpc_roce_mode << 6); | |
1800 | } | |
1801 | ||
225c7b1f RD |
1802 | } |
1803 | ||
1804 | if (attr_mask & IB_QP_TIMEOUT) { | |
fa417f7b | 1805 | context->pri_path.ackto |= attr->timeout << 3; |
225c7b1f RD |
1806 | optpar |= MLX4_QP_OPTPAR_ACK_TIMEOUT; |
1807 | } | |
1808 | ||
1809 | if (attr_mask & IB_QP_ALT_PATH) { | |
225c7b1f RD |
1810 | if (attr->alt_port_num == 0 || |
1811 | attr->alt_port_num > dev->dev->caps.num_ports) | |
f5b40431 | 1812 | goto out; |
225c7b1f | 1813 | |
5ae2a7a8 RD |
1814 | if (attr->alt_pkey_index >= |
1815 | dev->dev->caps.pkey_table_len[attr->alt_port_num]) | |
f5b40431 | 1816 | goto out; |
5ae2a7a8 | 1817 | |
2f5bb473 JM |
1818 | if (mlx4_set_alt_path(dev, attr, attr_mask, qp, |
1819 | &context->alt_path, | |
297e0dad | 1820 | attr->alt_port_num)) |
f5b40431 | 1821 | goto out; |
225c7b1f RD |
1822 | |
1823 | context->alt_path.pkey_index = attr->alt_pkey_index; | |
1824 | context->alt_path.ackto = attr->alt_timeout << 3; | |
1825 | optpar |= MLX4_QP_OPTPAR_ALT_ADDR_PATH; | |
1826 | } | |
1827 | ||
0a1405da SH |
1828 | pd = get_pd(qp); |
1829 | get_cqs(qp, &send_cq, &recv_cq); | |
1830 | context->pd = cpu_to_be32(pd->pdn); | |
1831 | context->cqn_send = cpu_to_be32(send_cq->mcq.cqn); | |
1832 | context->cqn_recv = cpu_to_be32(recv_cq->mcq.cqn); | |
1833 | context->params1 = cpu_to_be32(MLX4_IB_ACK_REQ_FREQ << 28); | |
57f01b53 | 1834 | |
95d04f07 RD |
1835 | /* Set "fast registration enabled" for all kernel QPs */ |
1836 | if (!qp->ibqp.uobject) | |
1837 | context->params1 |= cpu_to_be32(1 << 11); | |
1838 | ||
57f01b53 JM |
1839 | if (attr_mask & IB_QP_RNR_RETRY) { |
1840 | context->params1 |= cpu_to_be32(attr->rnr_retry << 13); | |
1841 | optpar |= MLX4_QP_OPTPAR_RNR_RETRY; | |
1842 | } | |
1843 | ||
225c7b1f RD |
1844 | if (attr_mask & IB_QP_RETRY_CNT) { |
1845 | context->params1 |= cpu_to_be32(attr->retry_cnt << 16); | |
1846 | optpar |= MLX4_QP_OPTPAR_RETRY_COUNT; | |
1847 | } | |
1848 | ||
1849 | if (attr_mask & IB_QP_MAX_QP_RD_ATOMIC) { | |
1850 | if (attr->max_rd_atomic) | |
1851 | context->params1 |= | |
1852 | cpu_to_be32(fls(attr->max_rd_atomic - 1) << 21); | |
1853 | optpar |= MLX4_QP_OPTPAR_SRA_MAX; | |
1854 | } | |
1855 | ||
1856 | if (attr_mask & IB_QP_SQ_PSN) | |
1857 | context->next_send_psn = cpu_to_be32(attr->sq_psn); | |
1858 | ||
225c7b1f RD |
1859 | if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC) { |
1860 | if (attr->max_dest_rd_atomic) | |
1861 | context->params2 |= | |
1862 | cpu_to_be32(fls(attr->max_dest_rd_atomic - 1) << 21); | |
1863 | optpar |= MLX4_QP_OPTPAR_RRA_MAX; | |
1864 | } | |
1865 | ||
1866 | if (attr_mask & (IB_QP_ACCESS_FLAGS | IB_QP_MAX_DEST_RD_ATOMIC)) { | |
1867 | context->params2 |= to_mlx4_access_flags(qp, attr, attr_mask); | |
1868 | optpar |= MLX4_QP_OPTPAR_RWE | MLX4_QP_OPTPAR_RRE | MLX4_QP_OPTPAR_RAE; | |
1869 | } | |
1870 | ||
1871 | if (ibqp->srq) | |
1872 | context->params2 |= cpu_to_be32(MLX4_QP_BIT_RIC); | |
1873 | ||
1874 | if (attr_mask & IB_QP_MIN_RNR_TIMER) { | |
1875 | context->rnr_nextrecvpsn |= cpu_to_be32(attr->min_rnr_timer << 24); | |
1876 | optpar |= MLX4_QP_OPTPAR_RNR_TIMEOUT; | |
1877 | } | |
1878 | if (attr_mask & IB_QP_RQ_PSN) | |
1879 | context->rnr_nextrecvpsn |= cpu_to_be32(attr->rq_psn); | |
1880 | ||
1ffeb2eb | 1881 | /* proxy and tunnel qp qkeys will be changed in modify-qp wrappers */ |
225c7b1f | 1882 | if (attr_mask & IB_QP_QKEY) { |
1ffeb2eb JM |
1883 | if (qp->mlx4_ib_qp_type & |
1884 | (MLX4_IB_QPT_PROXY_SMI_OWNER | MLX4_IB_QPT_TUN_SMI_OWNER)) | |
1885 | context->qkey = cpu_to_be32(IB_QP_SET_QKEY); | |
1886 | else { | |
1887 | if (mlx4_is_mfunc(dev->dev) && | |
1888 | !(qp->mlx4_ib_qp_type & MLX4_IB_QPT_ANY_SRIOV) && | |
1889 | (attr->qkey & MLX4_RESERVED_QKEY_MASK) == | |
1890 | MLX4_RESERVED_QKEY_BASE) { | |
1891 | pr_err("Cannot use reserved QKEY" | |
1892 | " 0x%x (range 0xffff0000..0xffffffff" | |
1893 | " is reserved)\n", attr->qkey); | |
1894 | err = -EINVAL; | |
1895 | goto out; | |
1896 | } | |
1897 | context->qkey = cpu_to_be32(attr->qkey); | |
1898 | } | |
225c7b1f RD |
1899 | optpar |= MLX4_QP_OPTPAR_Q_KEY; |
1900 | } | |
1901 | ||
1902 | if (ibqp->srq) | |
1903 | context->srqn = cpu_to_be32(1 << 24 | to_msrq(ibqp->srq)->msrq.srqn); | |
1904 | ||
0a1405da | 1905 | if (qp->rq.wqe_cnt && cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT) |
225c7b1f RD |
1906 | context->db_rec_addr = cpu_to_be64(qp->db.dma); |
1907 | ||
1908 | if (cur_state == IB_QPS_INIT && | |
1909 | new_state == IB_QPS_RTR && | |
1910 | (ibqp->qp_type == IB_QPT_GSI || ibqp->qp_type == IB_QPT_SMI || | |
3987a2d3 OG |
1911 | ibqp->qp_type == IB_QPT_UD || |
1912 | ibqp->qp_type == IB_QPT_RAW_PACKET)) { | |
225c7b1f | 1913 | context->pri_path.sched_queue = (qp->port - 1) << 6; |
1ffeb2eb JM |
1914 | if (qp->mlx4_ib_qp_type == MLX4_IB_QPT_SMI || |
1915 | qp->mlx4_ib_qp_type & | |
1916 | (MLX4_IB_QPT_PROXY_SMI_OWNER | MLX4_IB_QPT_TUN_SMI_OWNER)) { | |
225c7b1f | 1917 | context->pri_path.sched_queue |= MLX4_IB_DEFAULT_QP0_SCHED_QUEUE; |
1ffeb2eb JM |
1918 | if (qp->mlx4_ib_qp_type != MLX4_IB_QPT_SMI) |
1919 | context->pri_path.fl = 0x80; | |
1920 | } else { | |
1921 | if (qp->mlx4_ib_qp_type & MLX4_IB_QPT_ANY_SRIOV) | |
1922 | context->pri_path.fl = 0x80; | |
225c7b1f | 1923 | context->pri_path.sched_queue |= MLX4_IB_DEFAULT_SCHED_QUEUE; |
1ffeb2eb | 1924 | } |
2f5bb473 JM |
1925 | if (rdma_port_get_link_layer(&dev->ib_dev, qp->port) == |
1926 | IB_LINK_LAYER_ETHERNET) { | |
1927 | if (qp->mlx4_ib_qp_type == MLX4_IB_QPT_TUN_GSI || | |
1928 | qp->mlx4_ib_qp_type == MLX4_IB_QPT_GSI) | |
1929 | context->pri_path.feup = 1 << 7; /* don't fsm */ | |
1930 | /* handle smac_index */ | |
1931 | if (qp->mlx4_ib_qp_type == MLX4_IB_QPT_UD || | |
1932 | qp->mlx4_ib_qp_type == MLX4_IB_QPT_PROXY_GSI || | |
1933 | qp->mlx4_ib_qp_type == MLX4_IB_QPT_TUN_GSI) { | |
dbf727de | 1934 | err = handle_eth_ud_smac_index(dev, qp, context); |
bede98e7 MD |
1935 | if (err) { |
1936 | err = -EINVAL; | |
1937 | goto out; | |
1938 | } | |
9433c188 MB |
1939 | if (qp->mlx4_ib_qp_type == MLX4_IB_QPT_PROXY_GSI) |
1940 | dev->qp1_proxy[qp->port - 1] = qp; | |
2f5bb473 JM |
1941 | } |
1942 | } | |
225c7b1f RD |
1943 | } |
1944 | ||
d2fce8a9 | 1945 | if (qp->ibqp.qp_type == IB_QPT_RAW_PACKET) { |
3528f696 EC |
1946 | context->pri_path.ackto = (context->pri_path.ackto & 0xf8) | |
1947 | MLX4_IB_LINK_TYPE_ETH; | |
d2fce8a9 OG |
1948 | if (dev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) { |
1949 | /* set QP to receive both tunneled & non-tunneled packets */ | |
8e1a03b6 | 1950 | if (!(context->flags & cpu_to_be32(1 << MLX4_RSS_QPC_FLAG_OFFSET))) |
d2fce8a9 OG |
1951 | context->srqn = cpu_to_be32(7 << 28); |
1952 | } | |
1953 | } | |
3528f696 | 1954 | |
297e0dad MS |
1955 | if (ibqp->qp_type == IB_QPT_UD && (new_state == IB_QPS_RTR)) { |
1956 | int is_eth = rdma_port_get_link_layer( | |
1957 | &dev->ib_dev, qp->port) == | |
1958 | IB_LINK_LAYER_ETHERNET; | |
1959 | if (is_eth) { | |
1960 | context->pri_path.ackto = MLX4_IB_LINK_TYPE_ETH; | |
1961 | optpar |= MLX4_QP_OPTPAR_PRIMARY_ADDR_PATH; | |
1962 | } | |
1963 | } | |
1964 | ||
1965 | ||
225c7b1f RD |
1966 | if (cur_state == IB_QPS_RTS && new_state == IB_QPS_SQD && |
1967 | attr_mask & IB_QP_EN_SQD_ASYNC_NOTIFY && attr->en_sqd_async_notify) | |
1968 | sqd_event = 1; | |
1969 | else | |
1970 | sqd_event = 0; | |
1971 | ||
d57f5f72 | 1972 | if (!ibqp->uobject && cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT) |
3b5daf28 | 1973 | context->rlkey_roce_mode |= (1 << 4); |
d57f5f72 | 1974 | |
c0be5fb5 EC |
1975 | /* |
1976 | * Before passing a kernel QP to the HW, make sure that the | |
0e6e7416 RD |
1977 | * ownership bits of the send queue are set and the SQ |
1978 | * headroom is stamped so that the hardware doesn't start | |
1979 | * processing stale work requests. | |
c0be5fb5 EC |
1980 | */ |
1981 | if (!ibqp->uobject && cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT) { | |
1982 | struct mlx4_wqe_ctrl_seg *ctrl; | |
1983 | int i; | |
1984 | ||
0e6e7416 | 1985 | for (i = 0; i < qp->sq.wqe_cnt; ++i) { |
c0be5fb5 EC |
1986 | ctrl = get_send_wqe(qp, i); |
1987 | ctrl->owner_opcode = cpu_to_be32(1 << 31); | |
9670e553 | 1988 | if (qp->sq_max_wqes_per_wr == 1) |
224e92e0 BB |
1989 | ctrl->qpn_vlan.fence_size = |
1990 | 1 << (qp->sq.wqe_shift - 4); | |
0e6e7416 | 1991 | |
ea54b10c | 1992 | stamp_send_wqe(qp, i, 1 << qp->sq.wqe_shift); |
c0be5fb5 EC |
1993 | } |
1994 | } | |
1995 | ||
225c7b1f RD |
1996 | err = mlx4_qp_modify(dev->dev, &qp->mtt, to_mlx4_state(cur_state), |
1997 | to_mlx4_state(new_state), context, optpar, | |
1998 | sqd_event, &qp->mqp); | |
1999 | if (err) | |
2000 | goto out; | |
2001 | ||
2002 | qp->state = new_state; | |
2003 | ||
2004 | if (attr_mask & IB_QP_ACCESS_FLAGS) | |
2005 | qp->atomic_rd_en = attr->qp_access_flags; | |
2006 | if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC) | |
2007 | qp->resp_depth = attr->max_dest_rd_atomic; | |
fa417f7b | 2008 | if (attr_mask & IB_QP_PORT) { |
225c7b1f | 2009 | qp->port = attr->port_num; |
fa417f7b EC |
2010 | update_mcg_macs(dev, qp); |
2011 | } | |
225c7b1f RD |
2012 | if (attr_mask & IB_QP_ALT_PATH) |
2013 | qp->alt_port = attr->alt_port_num; | |
2014 | ||
2015 | if (is_sqp(dev, qp)) | |
2016 | store_sqp_attrs(to_msqp(qp), attr, attr_mask); | |
2017 | ||
2018 | /* | |
2019 | * If we moved QP0 to RTR, bring the IB link up; if we moved | |
2020 | * QP0 to RESET or ERROR, bring the link back down. | |
2021 | */ | |
2022 | if (is_qp0(dev, qp)) { | |
2023 | if (cur_state != IB_QPS_RTR && new_state == IB_QPS_RTR) | |
5ae2a7a8 | 2024 | if (mlx4_INIT_PORT(dev->dev, qp->port)) |
987c8f8f | 2025 | pr_warn("INIT_PORT failed for port %d\n", |
5ae2a7a8 | 2026 | qp->port); |
225c7b1f RD |
2027 | |
2028 | if (cur_state != IB_QPS_RESET && cur_state != IB_QPS_ERR && | |
2029 | (new_state == IB_QPS_RESET || new_state == IB_QPS_ERR)) | |
2030 | mlx4_CLOSE_PORT(dev->dev, qp->port); | |
2031 | } | |
2032 | ||
2033 | /* | |
2034 | * If we moved a kernel QP to RESET, clean up all old CQ | |
2035 | * entries and reinitialize the QP. | |
2036 | */ | |
2f5bb473 JM |
2037 | if (new_state == IB_QPS_RESET) { |
2038 | if (!ibqp->uobject) { | |
2039 | mlx4_ib_cq_clean(recv_cq, qp->mqp.qpn, | |
2040 | ibqp->srq ? to_msrq(ibqp->srq) : NULL); | |
2041 | if (send_cq != recv_cq) | |
2042 | mlx4_ib_cq_clean(send_cq, qp->mqp.qpn, NULL); | |
2043 | ||
2044 | qp->rq.head = 0; | |
2045 | qp->rq.tail = 0; | |
2046 | qp->sq.head = 0; | |
2047 | qp->sq.tail = 0; | |
2048 | qp->sq_next_wqe = 0; | |
2049 | if (qp->rq.wqe_cnt) | |
2050 | *qp->db.db = 0; | |
225c7b1f | 2051 | |
2f5bb473 JM |
2052 | if (qp->flags & MLX4_IB_QP_NETIF) |
2053 | mlx4_ib_steer_qp_reg(dev, qp, 0); | |
2054 | } | |
25476b02 | 2055 | if (qp->pri.smac || (!qp->pri.smac && qp->pri.smac_port)) { |
2f5bb473 JM |
2056 | mlx4_unregister_mac(dev->dev, qp->pri.smac_port, qp->pri.smac); |
2057 | qp->pri.smac = 0; | |
25476b02 | 2058 | qp->pri.smac_port = 0; |
2f5bb473 JM |
2059 | } |
2060 | if (qp->alt.smac) { | |
2061 | mlx4_unregister_mac(dev->dev, qp->alt.smac_port, qp->alt.smac); | |
2062 | qp->alt.smac = 0; | |
2063 | } | |
2064 | if (qp->pri.vid < 0x1000) { | |
2065 | mlx4_unregister_vlan(dev->dev, qp->pri.vlan_port, qp->pri.vid); | |
2066 | qp->pri.vid = 0xFFFF; | |
2067 | qp->pri.candidate_vid = 0xFFFF; | |
2068 | qp->pri.update_vid = 0; | |
2069 | } | |
c1c98501 | 2070 | |
2f5bb473 JM |
2071 | if (qp->alt.vid < 0x1000) { |
2072 | mlx4_unregister_vlan(dev->dev, qp->alt.vlan_port, qp->alt.vid); | |
2073 | qp->alt.vid = 0xFFFF; | |
2074 | qp->alt.candidate_vid = 0xFFFF; | |
2075 | qp->alt.update_vid = 0; | |
2076 | } | |
225c7b1f | 2077 | } |
225c7b1f | 2078 | out: |
7b59f0f9 EBE |
2079 | if (err && qp->counter_index) |
2080 | mlx4_ib_free_qp_counter(dev, qp); | |
c1c98501 MB |
2081 | if (err && steer_qp) |
2082 | mlx4_ib_steer_qp_reg(dev, qp, 0); | |
225c7b1f | 2083 | kfree(context); |
25476b02 JM |
2084 | if (qp->pri.candidate_smac || |
2085 | (!qp->pri.candidate_smac && qp->pri.candidate_smac_port)) { | |
2f5bb473 JM |
2086 | if (err) { |
2087 | mlx4_unregister_mac(dev->dev, qp->pri.candidate_smac_port, qp->pri.candidate_smac); | |
2088 | } else { | |
25476b02 | 2089 | if (qp->pri.smac || (!qp->pri.smac && qp->pri.smac_port)) |
2f5bb473 JM |
2090 | mlx4_unregister_mac(dev->dev, qp->pri.smac_port, qp->pri.smac); |
2091 | qp->pri.smac = qp->pri.candidate_smac; | |
2092 | qp->pri.smac_index = qp->pri.candidate_smac_index; | |
2093 | qp->pri.smac_port = qp->pri.candidate_smac_port; | |
2094 | } | |
2095 | qp->pri.candidate_smac = 0; | |
2096 | qp->pri.candidate_smac_index = 0; | |
2097 | qp->pri.candidate_smac_port = 0; | |
2098 | } | |
2099 | if (qp->alt.candidate_smac) { | |
2100 | if (err) { | |
2101 | mlx4_unregister_mac(dev->dev, qp->alt.candidate_smac_port, qp->alt.candidate_smac); | |
2102 | } else { | |
2103 | if (qp->alt.smac) | |
2104 | mlx4_unregister_mac(dev->dev, qp->alt.smac_port, qp->alt.smac); | |
2105 | qp->alt.smac = qp->alt.candidate_smac; | |
2106 | qp->alt.smac_index = qp->alt.candidate_smac_index; | |
2107 | qp->alt.smac_port = qp->alt.candidate_smac_port; | |
2108 | } | |
2109 | qp->alt.candidate_smac = 0; | |
2110 | qp->alt.candidate_smac_index = 0; | |
2111 | qp->alt.candidate_smac_port = 0; | |
2112 | } | |
2113 | ||
2114 | if (qp->pri.update_vid) { | |
2115 | if (err) { | |
2116 | if (qp->pri.candidate_vid < 0x1000) | |
2117 | mlx4_unregister_vlan(dev->dev, qp->pri.candidate_vlan_port, | |
2118 | qp->pri.candidate_vid); | |
2119 | } else { | |
2120 | if (qp->pri.vid < 0x1000) | |
2121 | mlx4_unregister_vlan(dev->dev, qp->pri.vlan_port, | |
2122 | qp->pri.vid); | |
2123 | qp->pri.vid = qp->pri.candidate_vid; | |
2124 | qp->pri.vlan_port = qp->pri.candidate_vlan_port; | |
2125 | qp->pri.vlan_index = qp->pri.candidate_vlan_index; | |
2126 | } | |
2127 | qp->pri.candidate_vid = 0xFFFF; | |
2128 | qp->pri.update_vid = 0; | |
2129 | } | |
2130 | ||
2131 | if (qp->alt.update_vid) { | |
2132 | if (err) { | |
2133 | if (qp->alt.candidate_vid < 0x1000) | |
2134 | mlx4_unregister_vlan(dev->dev, qp->alt.candidate_vlan_port, | |
2135 | qp->alt.candidate_vid); | |
2136 | } else { | |
2137 | if (qp->alt.vid < 0x1000) | |
2138 | mlx4_unregister_vlan(dev->dev, qp->alt.vlan_port, | |
2139 | qp->alt.vid); | |
2140 | qp->alt.vid = qp->alt.candidate_vid; | |
2141 | qp->alt.vlan_port = qp->alt.candidate_vlan_port; | |
2142 | qp->alt.vlan_index = qp->alt.candidate_vlan_index; | |
2143 | } | |
2144 | qp->alt.candidate_vid = 0xFFFF; | |
2145 | qp->alt.update_vid = 0; | |
2146 | } | |
2147 | ||
225c7b1f RD |
2148 | return err; |
2149 | } | |
2150 | ||
e1b866c6 MS |
2151 | static int _mlx4_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, |
2152 | int attr_mask, struct ib_udata *udata) | |
65adfa91 MT |
2153 | { |
2154 | struct mlx4_ib_dev *dev = to_mdev(ibqp->device); | |
2155 | struct mlx4_ib_qp *qp = to_mqp(ibqp); | |
2156 | enum ib_qp_state cur_state, new_state; | |
2157 | int err = -EINVAL; | |
297e0dad | 2158 | int ll; |
65adfa91 MT |
2159 | mutex_lock(&qp->mutex); |
2160 | ||
2161 | cur_state = attr_mask & IB_QP_CUR_STATE ? attr->cur_qp_state : qp->state; | |
2162 | new_state = attr_mask & IB_QP_STATE ? attr->qp_state : cur_state; | |
2163 | ||
297e0dad MS |
2164 | if (cur_state == new_state && cur_state == IB_QPS_RESET) { |
2165 | ll = IB_LINK_LAYER_UNSPECIFIED; | |
2166 | } else { | |
2167 | int port = attr_mask & IB_QP_PORT ? attr->port_num : qp->port; | |
2168 | ll = rdma_port_get_link_layer(&dev->ib_dev, port); | |
2169 | } | |
dd5f03be MB |
2170 | |
2171 | if (!ib_modify_qp_is_ok(cur_state, new_state, ibqp->qp_type, | |
297e0dad | 2172 | attr_mask, ll)) { |
b1d8eb5a JM |
2173 | pr_debug("qpn 0x%x: invalid attribute mask specified " |
2174 | "for transition %d to %d. qp_type %d," | |
2175 | " attr_mask 0x%x\n", | |
2176 | ibqp->qp_num, cur_state, new_state, | |
2177 | ibqp->qp_type, attr_mask); | |
65adfa91 | 2178 | goto out; |
b1d8eb5a | 2179 | } |
65adfa91 | 2180 | |
c6215745 MS |
2181 | if (mlx4_is_bonded(dev->dev) && (attr_mask & IB_QP_PORT)) { |
2182 | if ((cur_state == IB_QPS_RESET) && (new_state == IB_QPS_INIT)) { | |
2183 | if ((ibqp->qp_type == IB_QPT_RC) || | |
2184 | (ibqp->qp_type == IB_QPT_UD) || | |
2185 | (ibqp->qp_type == IB_QPT_UC) || | |
2186 | (ibqp->qp_type == IB_QPT_RAW_PACKET) || | |
2187 | (ibqp->qp_type == IB_QPT_XRC_INI)) { | |
2188 | attr->port_num = mlx4_ib_bond_next_port(dev); | |
2189 | } | |
2190 | } else { | |
2191 | /* no sense in changing port_num | |
2192 | * when ports are bonded */ | |
2193 | attr_mask &= ~IB_QP_PORT; | |
2194 | } | |
2195 | } | |
2196 | ||
65adfa91 | 2197 | if ((attr_mask & IB_QP_PORT) && |
1ffeb2eb | 2198 | (attr->port_num == 0 || attr->port_num > dev->num_ports)) { |
b1d8eb5a JM |
2199 | pr_debug("qpn 0x%x: invalid port number (%d) specified " |
2200 | "for transition %d to %d. qp_type %d\n", | |
2201 | ibqp->qp_num, attr->port_num, cur_state, | |
2202 | new_state, ibqp->qp_type); | |
65adfa91 MT |
2203 | goto out; |
2204 | } | |
2205 | ||
3987a2d3 OG |
2206 | if ((attr_mask & IB_QP_PORT) && (ibqp->qp_type == IB_QPT_RAW_PACKET) && |
2207 | (rdma_port_get_link_layer(&dev->ib_dev, attr->port_num) != | |
2208 | IB_LINK_LAYER_ETHERNET)) | |
2209 | goto out; | |
2210 | ||
5ae2a7a8 RD |
2211 | if (attr_mask & IB_QP_PKEY_INDEX) { |
2212 | int p = attr_mask & IB_QP_PORT ? attr->port_num : qp->port; | |
b1d8eb5a JM |
2213 | if (attr->pkey_index >= dev->dev->caps.pkey_table_len[p]) { |
2214 | pr_debug("qpn 0x%x: invalid pkey index (%d) specified " | |
2215 | "for transition %d to %d. qp_type %d\n", | |
2216 | ibqp->qp_num, attr->pkey_index, cur_state, | |
2217 | new_state, ibqp->qp_type); | |
5ae2a7a8 | 2218 | goto out; |
b1d8eb5a | 2219 | } |
5ae2a7a8 RD |
2220 | } |
2221 | ||
65adfa91 MT |
2222 | if (attr_mask & IB_QP_MAX_QP_RD_ATOMIC && |
2223 | attr->max_rd_atomic > dev->dev->caps.max_qp_init_rdma) { | |
b1d8eb5a JM |
2224 | pr_debug("qpn 0x%x: max_rd_atomic (%d) too large. " |
2225 | "Transition %d to %d. qp_type %d\n", | |
2226 | ibqp->qp_num, attr->max_rd_atomic, cur_state, | |
2227 | new_state, ibqp->qp_type); | |
65adfa91 MT |
2228 | goto out; |
2229 | } | |
2230 | ||
2231 | if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC && | |
2232 | attr->max_dest_rd_atomic > dev->dev->caps.max_qp_dest_rdma) { | |
b1d8eb5a JM |
2233 | pr_debug("qpn 0x%x: max_dest_rd_atomic (%d) too large. " |
2234 | "Transition %d to %d. qp_type %d\n", | |
2235 | ibqp->qp_num, attr->max_dest_rd_atomic, cur_state, | |
2236 | new_state, ibqp->qp_type); | |
65adfa91 MT |
2237 | goto out; |
2238 | } | |
2239 | ||
2240 | if (cur_state == new_state && cur_state == IB_QPS_RESET) { | |
2241 | err = 0; | |
2242 | goto out; | |
2243 | } | |
2244 | ||
65adfa91 MT |
2245 | err = __mlx4_ib_modify_qp(ibqp, attr, attr_mask, cur_state, new_state); |
2246 | ||
c6215745 MS |
2247 | if (mlx4_is_bonded(dev->dev) && (attr_mask & IB_QP_PORT)) |
2248 | attr->port_num = 1; | |
2249 | ||
65adfa91 MT |
2250 | out: |
2251 | mutex_unlock(&qp->mutex); | |
2252 | return err; | |
2253 | } | |
2254 | ||
e1b866c6 MS |
2255 | int mlx4_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, |
2256 | int attr_mask, struct ib_udata *udata) | |
2257 | { | |
2258 | struct mlx4_ib_qp *mqp = to_mqp(ibqp); | |
2259 | int ret; | |
2260 | ||
2261 | ret = _mlx4_ib_modify_qp(ibqp, attr, attr_mask, udata); | |
2262 | ||
2263 | if (mqp->mlx4_ib_qp_type == MLX4_IB_QPT_GSI) { | |
2264 | struct mlx4_ib_sqp *sqp = to_msqp(mqp); | |
2265 | int err = 0; | |
2266 | ||
2267 | if (sqp->roce_v2_gsi) | |
2268 | err = ib_modify_qp(sqp->roce_v2_gsi, attr, attr_mask); | |
2269 | if (err) | |
2270 | pr_err("Failed to modify GSI QP for RoCEv2 (%d)\n", | |
2271 | err); | |
2272 | } | |
2273 | return ret; | |
2274 | } | |
2275 | ||
99ec41d0 JM |
2276 | static int vf_get_qp0_qkey(struct mlx4_dev *dev, int qpn, u32 *qkey) |
2277 | { | |
2278 | int i; | |
2279 | for (i = 0; i < dev->caps.num_ports; i++) { | |
2280 | if (qpn == dev->caps.qp0_proxy[i] || | |
2281 | qpn == dev->caps.qp0_tunnel[i]) { | |
2282 | *qkey = dev->caps.qp0_qkey[i]; | |
2283 | return 0; | |
2284 | } | |
2285 | } | |
2286 | return -EINVAL; | |
2287 | } | |
2288 | ||
1ffeb2eb | 2289 | static int build_sriov_qp0_header(struct mlx4_ib_sqp *sqp, |
e622f2f4 | 2290 | struct ib_ud_wr *wr, |
1ffeb2eb JM |
2291 | void *wqe, unsigned *mlx_seg_len) |
2292 | { | |
2293 | struct mlx4_ib_dev *mdev = to_mdev(sqp->qp.ibqp.device); | |
2294 | struct ib_device *ib_dev = &mdev->ib_dev; | |
2295 | struct mlx4_wqe_mlx_seg *mlx = wqe; | |
2296 | struct mlx4_wqe_inline_seg *inl = wqe + sizeof *mlx; | |
e622f2f4 | 2297 | struct mlx4_ib_ah *ah = to_mah(wr->ah); |
1ffeb2eb JM |
2298 | u16 pkey; |
2299 | u32 qkey; | |
2300 | int send_size; | |
2301 | int header_size; | |
2302 | int spc; | |
2303 | int i; | |
2304 | ||
e622f2f4 | 2305 | if (wr->wr.opcode != IB_WR_SEND) |
1ffeb2eb JM |
2306 | return -EINVAL; |
2307 | ||
2308 | send_size = 0; | |
2309 | ||
e622f2f4 CH |
2310 | for (i = 0; i < wr->wr.num_sge; ++i) |
2311 | send_size += wr->wr.sg_list[i].length; | |
1ffeb2eb JM |
2312 | |
2313 | /* for proxy-qp0 sends, need to add in size of tunnel header */ | |
2314 | /* for tunnel-qp0 sends, tunnel header is already in s/g list */ | |
2315 | if (sqp->qp.mlx4_ib_qp_type == MLX4_IB_QPT_PROXY_SMI_OWNER) | |
2316 | send_size += sizeof (struct mlx4_ib_tunnel_header); | |
2317 | ||
25f40220 | 2318 | ib_ud_header_init(send_size, 1, 0, 0, 0, 0, 0, 0, &sqp->ud_header); |
1ffeb2eb JM |
2319 | |
2320 | if (sqp->qp.mlx4_ib_qp_type == MLX4_IB_QPT_PROXY_SMI_OWNER) { | |
2321 | sqp->ud_header.lrh.service_level = | |
2322 | be32_to_cpu(ah->av.ib.sl_tclass_flowlabel) >> 28; | |
2323 | sqp->ud_header.lrh.destination_lid = | |
2324 | cpu_to_be16(ah->av.ib.g_slid & 0x7f); | |
2325 | sqp->ud_header.lrh.source_lid = | |
2326 | cpu_to_be16(ah->av.ib.g_slid & 0x7f); | |
2327 | } | |
2328 | ||
2329 | mlx->flags &= cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE); | |
2330 | ||
2331 | /* force loopback */ | |
2332 | mlx->flags |= cpu_to_be32(MLX4_WQE_MLX_VL15 | 0x1 | MLX4_WQE_MLX_SLR); | |
2333 | mlx->rlid = sqp->ud_header.lrh.destination_lid; | |
2334 | ||
2335 | sqp->ud_header.lrh.virtual_lane = 0; | |
e622f2f4 | 2336 | sqp->ud_header.bth.solicited_event = !!(wr->wr.send_flags & IB_SEND_SOLICITED); |
1ffeb2eb JM |
2337 | ib_get_cached_pkey(ib_dev, sqp->qp.port, 0, &pkey); |
2338 | sqp->ud_header.bth.pkey = cpu_to_be16(pkey); | |
2339 | if (sqp->qp.mlx4_ib_qp_type == MLX4_IB_QPT_TUN_SMI_OWNER) | |
e622f2f4 | 2340 | sqp->ud_header.bth.destination_qpn = cpu_to_be32(wr->remote_qpn); |
1ffeb2eb JM |
2341 | else |
2342 | sqp->ud_header.bth.destination_qpn = | |
47605df9 | 2343 | cpu_to_be32(mdev->dev->caps.qp0_tunnel[sqp->qp.port - 1]); |
1ffeb2eb JM |
2344 | |
2345 | sqp->ud_header.bth.psn = cpu_to_be32((sqp->send_psn++) & ((1 << 24) - 1)); | |
99ec41d0 JM |
2346 | if (mlx4_is_master(mdev->dev)) { |
2347 | if (mlx4_get_parav_qkey(mdev->dev, sqp->qp.mqp.qpn, &qkey)) | |
2348 | return -EINVAL; | |
2349 | } else { | |
2350 | if (vf_get_qp0_qkey(mdev->dev, sqp->qp.mqp.qpn, &qkey)) | |
2351 | return -EINVAL; | |
2352 | } | |
1ffeb2eb JM |
2353 | sqp->ud_header.deth.qkey = cpu_to_be32(qkey); |
2354 | sqp->ud_header.deth.source_qpn = cpu_to_be32(sqp->qp.mqp.qpn); | |
2355 | ||
2356 | sqp->ud_header.bth.opcode = IB_OPCODE_UD_SEND_ONLY; | |
2357 | sqp->ud_header.immediate_present = 0; | |
2358 | ||
2359 | header_size = ib_ud_header_pack(&sqp->ud_header, sqp->header_buf); | |
2360 | ||
2361 | /* | |
2362 | * Inline data segments may not cross a 64 byte boundary. If | |
2363 | * our UD header is bigger than the space available up to the | |
2364 | * next 64 byte boundary in the WQE, use two inline data | |
2365 | * segments to hold the UD header. | |
2366 | */ | |
2367 | spc = MLX4_INLINE_ALIGN - | |
2368 | ((unsigned long) (inl + 1) & (MLX4_INLINE_ALIGN - 1)); | |
2369 | if (header_size <= spc) { | |
2370 | inl->byte_count = cpu_to_be32(1 << 31 | header_size); | |
2371 | memcpy(inl + 1, sqp->header_buf, header_size); | |
2372 | i = 1; | |
2373 | } else { | |
2374 | inl->byte_count = cpu_to_be32(1 << 31 | spc); | |
2375 | memcpy(inl + 1, sqp->header_buf, spc); | |
2376 | ||
2377 | inl = (void *) (inl + 1) + spc; | |
2378 | memcpy(inl + 1, sqp->header_buf + spc, header_size - spc); | |
2379 | /* | |
2380 | * Need a barrier here to make sure all the data is | |
2381 | * visible before the byte_count field is set. | |
2382 | * Otherwise the HCA prefetcher could grab the 64-byte | |
2383 | * chunk with this inline segment and get a valid (!= | |
2384 | * 0xffffffff) byte count but stale data, and end up | |
2385 | * generating a packet with bad headers. | |
2386 | * | |
2387 | * The first inline segment's byte_count field doesn't | |
2388 | * need a barrier, because it comes after a | |
2389 | * control/MLX segment and therefore is at an offset | |
2390 | * of 16 mod 64. | |
2391 | */ | |
2392 | wmb(); | |
2393 | inl->byte_count = cpu_to_be32(1 << 31 | (header_size - spc)); | |
2394 | i = 2; | |
2395 | } | |
2396 | ||
2397 | *mlx_seg_len = | |
2398 | ALIGN(i * sizeof (struct mlx4_wqe_inline_seg) + header_size, 16); | |
2399 | return 0; | |
2400 | } | |
2401 | ||
fd10ed8e JM |
2402 | static u8 sl_to_vl(struct mlx4_ib_dev *dev, u8 sl, int port_num) |
2403 | { | |
2404 | union sl2vl_tbl_to_u64 tmp_vltab; | |
2405 | u8 vl; | |
2406 | ||
2407 | if (sl > 15) | |
2408 | return 0xf; | |
2409 | tmp_vltab.sl64 = atomic64_read(&dev->sl2vl[port_num - 1]); | |
2410 | vl = tmp_vltab.sl8[sl >> 1]; | |
2411 | if (sl & 1) | |
2412 | vl &= 0x0f; | |
2413 | else | |
2414 | vl >>= 4; | |
2415 | return vl; | |
2416 | } | |
2417 | ||
a748d60d TB |
2418 | static int fill_gid_by_hw_index(struct mlx4_ib_dev *ibdev, u8 port_num, |
2419 | int index, union ib_gid *gid, | |
2420 | enum ib_gid_type *gid_type) | |
2421 | { | |
2422 | struct mlx4_ib_iboe *iboe = &ibdev->iboe; | |
2423 | struct mlx4_port_gid_table *port_gid_table; | |
2424 | unsigned long flags; | |
2425 | ||
2426 | port_gid_table = &iboe->gids[port_num - 1]; | |
2427 | spin_lock_irqsave(&iboe->lock, flags); | |
2428 | memcpy(gid, &port_gid_table->gids[index].gid, sizeof(*gid)); | |
2429 | *gid_type = port_gid_table->gids[index].gid_type; | |
2430 | spin_unlock_irqrestore(&iboe->lock, flags); | |
2431 | if (!memcmp(gid, &zgid, sizeof(*gid))) | |
2432 | return -ENOENT; | |
2433 | ||
2434 | return 0; | |
2435 | } | |
2436 | ||
3ef967a4 | 2437 | #define MLX4_ROCEV2_QP1_SPORT 0xC000 |
e622f2f4 | 2438 | static int build_mlx_header(struct mlx4_ib_sqp *sqp, struct ib_ud_wr *wr, |
f438000f | 2439 | void *wqe, unsigned *mlx_seg_len) |
225c7b1f | 2440 | { |
a478868a | 2441 | struct ib_device *ib_dev = sqp->qp.ibqp.device; |
a748d60d | 2442 | struct mlx4_ib_dev *ibdev = to_mdev(ib_dev); |
225c7b1f | 2443 | struct mlx4_wqe_mlx_seg *mlx = wqe; |
6ee51a4e | 2444 | struct mlx4_wqe_ctrl_seg *ctrl = wqe; |
225c7b1f | 2445 | struct mlx4_wqe_inline_seg *inl = wqe + sizeof *mlx; |
e622f2f4 | 2446 | struct mlx4_ib_ah *ah = to_mah(wr->ah); |
4c3eb3ca | 2447 | union ib_gid sgid; |
225c7b1f RD |
2448 | u16 pkey; |
2449 | int send_size; | |
2450 | int header_size; | |
e61ef241 | 2451 | int spc; |
225c7b1f | 2452 | int i; |
1ffeb2eb | 2453 | int err = 0; |
57d88cff | 2454 | u16 vlan = 0xffff; |
a29bec12 RD |
2455 | bool is_eth; |
2456 | bool is_vlan = false; | |
2457 | bool is_grh; | |
3ef967a4 MS |
2458 | bool is_udp = false; |
2459 | int ip_version = 0; | |
225c7b1f RD |
2460 | |
2461 | send_size = 0; | |
e622f2f4 CH |
2462 | for (i = 0; i < wr->wr.num_sge; ++i) |
2463 | send_size += wr->wr.sg_list[i].length; | |
225c7b1f | 2464 | |
fa417f7b EC |
2465 | is_eth = rdma_port_get_link_layer(sqp->qp.ibqp.device, sqp->qp.port) == IB_LINK_LAYER_ETHERNET; |
2466 | is_grh = mlx4_ib_ah_grh_present(ah); | |
4c3eb3ca | 2467 | if (is_eth) { |
a748d60d | 2468 | enum ib_gid_type gid_type; |
1ffeb2eb JM |
2469 | if (mlx4_is_mfunc(to_mdev(ib_dev)->dev)) { |
2470 | /* When multi-function is enabled, the ib_core gid | |
2471 | * indexes don't necessarily match the hw ones, so | |
2472 | * we must use our own cache */ | |
6ee51a4e JM |
2473 | err = mlx4_get_roce_gid_from_slave(to_mdev(ib_dev)->dev, |
2474 | be32_to_cpu(ah->av.ib.port_pd) >> 24, | |
2475 | ah->av.ib.gid_index, &sgid.raw[0]); | |
2476 | if (err) | |
2477 | return err; | |
1ffeb2eb | 2478 | } else { |
a748d60d TB |
2479 | err = fill_gid_by_hw_index(ibdev, sqp->qp.port, |
2480 | ah->av.ib.gid_index, | |
2481 | &sgid, &gid_type); | |
3ef967a4 | 2482 | if (!err) { |
a748d60d | 2483 | is_udp = gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP; |
3ef967a4 MS |
2484 | if (is_udp) { |
2485 | if (ipv6_addr_v4mapped((struct in6_addr *)&sgid)) | |
2486 | ip_version = 4; | |
2487 | else | |
2488 | ip_version = 6; | |
2489 | is_grh = false; | |
2490 | } | |
2491 | } else { | |
1ffeb2eb | 2492 | return err; |
3ef967a4 | 2493 | } |
1ffeb2eb | 2494 | } |
0e9855db | 2495 | if (ah->av.eth.vlan != cpu_to_be16(0xffff)) { |
297e0dad MS |
2496 | vlan = be16_to_cpu(ah->av.eth.vlan) & 0x0fff; |
2497 | is_vlan = 1; | |
2498 | } | |
4c3eb3ca | 2499 | } |
25f40220 | 2500 | err = ib_ud_header_init(send_size, !is_eth, is_eth, is_vlan, is_grh, |
3ef967a4 | 2501 | ip_version, is_udp, 0, &sqp->ud_header); |
25f40220 MS |
2502 | if (err) |
2503 | return err; | |
fa417f7b EC |
2504 | |
2505 | if (!is_eth) { | |
2506 | sqp->ud_header.lrh.service_level = | |
2507 | be32_to_cpu(ah->av.ib.sl_tclass_flowlabel) >> 28; | |
2508 | sqp->ud_header.lrh.destination_lid = ah->av.ib.dlid; | |
2509 | sqp->ud_header.lrh.source_lid = cpu_to_be16(ah->av.ib.g_slid & 0x7f); | |
2510 | } | |
225c7b1f | 2511 | |
3ef967a4 | 2512 | if (is_grh || (ip_version == 6)) { |
225c7b1f | 2513 | sqp->ud_header.grh.traffic_class = |
fa417f7b | 2514 | (be32_to_cpu(ah->av.ib.sl_tclass_flowlabel) >> 20) & 0xff; |
225c7b1f | 2515 | sqp->ud_header.grh.flow_label = |
fa417f7b EC |
2516 | ah->av.ib.sl_tclass_flowlabel & cpu_to_be32(0xfffff); |
2517 | sqp->ud_header.grh.hop_limit = ah->av.ib.hop_limit; | |
baa0be70 | 2518 | if (is_eth) { |
6ee51a4e | 2519 | memcpy(sqp->ud_header.grh.source_gid.raw, sgid.raw, 16); |
baa0be70 JM |
2520 | } else { |
2521 | if (mlx4_is_mfunc(to_mdev(ib_dev)->dev)) { | |
2522 | /* When multi-function is enabled, the ib_core gid | |
2523 | * indexes don't necessarily match the hw ones, so | |
2524 | * we must use our own cache | |
2525 | */ | |
2526 | sqp->ud_header.grh.source_gid.global.subnet_prefix = | |
8ec07bf8 JM |
2527 | cpu_to_be64(atomic64_read(&(to_mdev(ib_dev)->sriov. |
2528 | demux[sqp->qp.port - 1]. | |
2529 | subnet_prefix))); | |
baa0be70 JM |
2530 | sqp->ud_header.grh.source_gid.global.interface_id = |
2531 | to_mdev(ib_dev)->sriov.demux[sqp->qp.port - 1]. | |
2532 | guid_cache[ah->av.ib.gid_index]; | |
2533 | } else { | |
2534 | ib_get_cached_gid(ib_dev, | |
2535 | be32_to_cpu(ah->av.ib.port_pd) >> 24, | |
2536 | ah->av.ib.gid_index, | |
2537 | &sqp->ud_header.grh.source_gid, NULL); | |
2538 | } | |
6ee51a4e | 2539 | } |
225c7b1f | 2540 | memcpy(sqp->ud_header.grh.destination_gid.raw, |
fa417f7b | 2541 | ah->av.ib.dgid, 16); |
225c7b1f RD |
2542 | } |
2543 | ||
3ef967a4 MS |
2544 | if (ip_version == 4) { |
2545 | sqp->ud_header.ip4.tos = | |
2546 | (be32_to_cpu(ah->av.ib.sl_tclass_flowlabel) >> 20) & 0xff; | |
2547 | sqp->ud_header.ip4.id = 0; | |
2548 | sqp->ud_header.ip4.frag_off = htons(IP_DF); | |
2549 | sqp->ud_header.ip4.ttl = ah->av.eth.hop_limit; | |
2550 | ||
2551 | memcpy(&sqp->ud_header.ip4.saddr, | |
2552 | sgid.raw + 12, 4); | |
2553 | memcpy(&sqp->ud_header.ip4.daddr, ah->av.ib.dgid + 12, 4); | |
2554 | sqp->ud_header.ip4.check = ib_ud_ip4_csum(&sqp->ud_header); | |
2555 | } | |
2556 | ||
2557 | if (is_udp) { | |
2558 | sqp->ud_header.udp.dport = htons(ROCE_V2_UDP_DPORT); | |
2559 | sqp->ud_header.udp.sport = htons(MLX4_ROCEV2_QP1_SPORT); | |
2560 | sqp->ud_header.udp.csum = 0; | |
2561 | } | |
2562 | ||
225c7b1f | 2563 | mlx->flags &= cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE); |
fa417f7b EC |
2564 | |
2565 | if (!is_eth) { | |
2566 | mlx->flags |= cpu_to_be32((!sqp->qp.ibqp.qp_num ? MLX4_WQE_MLX_VL15 : 0) | | |
2567 | (sqp->ud_header.lrh.destination_lid == | |
2568 | IB_LID_PERMISSIVE ? MLX4_WQE_MLX_SLR : 0) | | |
2569 | (sqp->ud_header.lrh.service_level << 8)); | |
1ffeb2eb JM |
2570 | if (ah->av.ib.port_pd & cpu_to_be32(0x80000000)) |
2571 | mlx->flags |= cpu_to_be32(0x1); /* force loopback */ | |
fa417f7b EC |
2572 | mlx->rlid = sqp->ud_header.lrh.destination_lid; |
2573 | } | |
225c7b1f | 2574 | |
e622f2f4 | 2575 | switch (wr->wr.opcode) { |
225c7b1f RD |
2576 | case IB_WR_SEND: |
2577 | sqp->ud_header.bth.opcode = IB_OPCODE_UD_SEND_ONLY; | |
2578 | sqp->ud_header.immediate_present = 0; | |
2579 | break; | |
2580 | case IB_WR_SEND_WITH_IMM: | |
2581 | sqp->ud_header.bth.opcode = IB_OPCODE_UD_SEND_ONLY_WITH_IMMEDIATE; | |
2582 | sqp->ud_header.immediate_present = 1; | |
e622f2f4 | 2583 | sqp->ud_header.immediate_data = wr->wr.ex.imm_data; |
225c7b1f RD |
2584 | break; |
2585 | default: | |
2586 | return -EINVAL; | |
2587 | } | |
2588 | ||
fa417f7b | 2589 | if (is_eth) { |
6ee51a4e | 2590 | struct in6_addr in6; |
3ef967a4 | 2591 | u16 ether_type; |
c0c1d3d7 OD |
2592 | u16 pcp = (be32_to_cpu(ah->av.ib.sl_tclass_flowlabel) >> 29) << 13; |
2593 | ||
69ae5439 | 2594 | ether_type = (!is_udp) ? ETH_P_IBOE: |
3ef967a4 MS |
2595 | (ip_version == 4 ? ETH_P_IP : ETH_P_IPV6); |
2596 | ||
c0c1d3d7 | 2597 | mlx->sched_prio = cpu_to_be16(pcp); |
fa417f7b | 2598 | |
1049f138 | 2599 | ether_addr_copy(sqp->ud_header.eth.smac_h, ah->av.eth.s_mac); |
fa417f7b | 2600 | memcpy(sqp->ud_header.eth.dmac_h, ah->av.eth.mac, 6); |
6ee51a4e JM |
2601 | memcpy(&ctrl->srcrb_flags16[0], ah->av.eth.mac, 2); |
2602 | memcpy(&ctrl->imm, ah->av.eth.mac + 2, 4); | |
2603 | memcpy(&in6, sgid.raw, sizeof(in6)); | |
5ea8bbfc | 2604 | |
3e0629cb | 2605 | |
fa417f7b EC |
2606 | if (!memcmp(sqp->ud_header.eth.smac_h, sqp->ud_header.eth.dmac_h, 6)) |
2607 | mlx->flags |= cpu_to_be32(MLX4_WQE_CTRL_FORCE_LOOPBACK); | |
4c3eb3ca | 2608 | if (!is_vlan) { |
3ef967a4 | 2609 | sqp->ud_header.eth.type = cpu_to_be16(ether_type); |
4c3eb3ca | 2610 | } else { |
3ef967a4 | 2611 | sqp->ud_header.vlan.type = cpu_to_be16(ether_type); |
4c3eb3ca EC |
2612 | sqp->ud_header.vlan.tag = cpu_to_be16(vlan | pcp); |
2613 | } | |
fa417f7b | 2614 | } else { |
fd10ed8e JM |
2615 | sqp->ud_header.lrh.virtual_lane = !sqp->qp.ibqp.qp_num ? 15 : |
2616 | sl_to_vl(to_mdev(ib_dev), | |
2617 | sqp->ud_header.lrh.service_level, | |
2618 | sqp->qp.port); | |
2619 | if (sqp->qp.ibqp.qp_num && sqp->ud_header.lrh.virtual_lane == 15) | |
2620 | return -EINVAL; | |
fa417f7b EC |
2621 | if (sqp->ud_header.lrh.destination_lid == IB_LID_PERMISSIVE) |
2622 | sqp->ud_header.lrh.source_lid = IB_LID_PERMISSIVE; | |
2623 | } | |
e622f2f4 | 2624 | sqp->ud_header.bth.solicited_event = !!(wr->wr.send_flags & IB_SEND_SOLICITED); |
225c7b1f RD |
2625 | if (!sqp->qp.ibqp.qp_num) |
2626 | ib_get_cached_pkey(ib_dev, sqp->qp.port, sqp->pkey_index, &pkey); | |
2627 | else | |
e622f2f4 | 2628 | ib_get_cached_pkey(ib_dev, sqp->qp.port, wr->pkey_index, &pkey); |
225c7b1f | 2629 | sqp->ud_header.bth.pkey = cpu_to_be16(pkey); |
e622f2f4 | 2630 | sqp->ud_header.bth.destination_qpn = cpu_to_be32(wr->remote_qpn); |
225c7b1f | 2631 | sqp->ud_header.bth.psn = cpu_to_be32((sqp->send_psn++) & ((1 << 24) - 1)); |
e622f2f4 CH |
2632 | sqp->ud_header.deth.qkey = cpu_to_be32(wr->remote_qkey & 0x80000000 ? |
2633 | sqp->qkey : wr->remote_qkey); | |
225c7b1f RD |
2634 | sqp->ud_header.deth.source_qpn = cpu_to_be32(sqp->qp.ibqp.qp_num); |
2635 | ||
2636 | header_size = ib_ud_header_pack(&sqp->ud_header, sqp->header_buf); | |
2637 | ||
2638 | if (0) { | |
987c8f8f | 2639 | pr_err("built UD header of size %d:\n", header_size); |
225c7b1f RD |
2640 | for (i = 0; i < header_size / 4; ++i) { |
2641 | if (i % 8 == 0) | |
987c8f8f SP |
2642 | pr_err(" [%02x] ", i * 4); |
2643 | pr_cont(" %08x", | |
2644 | be32_to_cpu(((__be32 *) sqp->header_buf)[i])); | |
225c7b1f | 2645 | if ((i + 1) % 8 == 0) |
987c8f8f | 2646 | pr_cont("\n"); |
225c7b1f | 2647 | } |
987c8f8f | 2648 | pr_err("\n"); |
225c7b1f RD |
2649 | } |
2650 | ||
e61ef241 RD |
2651 | /* |
2652 | * Inline data segments may not cross a 64 byte boundary. If | |
2653 | * our UD header is bigger than the space available up to the | |
2654 | * next 64 byte boundary in the WQE, use two inline data | |
2655 | * segments to hold the UD header. | |
2656 | */ | |
2657 | spc = MLX4_INLINE_ALIGN - | |
2658 | ((unsigned long) (inl + 1) & (MLX4_INLINE_ALIGN - 1)); | |
2659 | if (header_size <= spc) { | |
2660 | inl->byte_count = cpu_to_be32(1 << 31 | header_size); | |
2661 | memcpy(inl + 1, sqp->header_buf, header_size); | |
2662 | i = 1; | |
2663 | } else { | |
2664 | inl->byte_count = cpu_to_be32(1 << 31 | spc); | |
2665 | memcpy(inl + 1, sqp->header_buf, spc); | |
2666 | ||
2667 | inl = (void *) (inl + 1) + spc; | |
2668 | memcpy(inl + 1, sqp->header_buf + spc, header_size - spc); | |
2669 | /* | |
2670 | * Need a barrier here to make sure all the data is | |
2671 | * visible before the byte_count field is set. | |
2672 | * Otherwise the HCA prefetcher could grab the 64-byte | |
2673 | * chunk with this inline segment and get a valid (!= | |
2674 | * 0xffffffff) byte count but stale data, and end up | |
2675 | * generating a packet with bad headers. | |
2676 | * | |
2677 | * The first inline segment's byte_count field doesn't | |
2678 | * need a barrier, because it comes after a | |
2679 | * control/MLX segment and therefore is at an offset | |
2680 | * of 16 mod 64. | |
2681 | */ | |
2682 | wmb(); | |
2683 | inl->byte_count = cpu_to_be32(1 << 31 | (header_size - spc)); | |
2684 | i = 2; | |
2685 | } | |
225c7b1f | 2686 | |
f438000f RD |
2687 | *mlx_seg_len = |
2688 | ALIGN(i * sizeof (struct mlx4_wqe_inline_seg) + header_size, 16); | |
2689 | return 0; | |
225c7b1f RD |
2690 | } |
2691 | ||
2692 | static int mlx4_wq_overflow(struct mlx4_ib_wq *wq, int nreq, struct ib_cq *ib_cq) | |
2693 | { | |
2694 | unsigned cur; | |
2695 | struct mlx4_ib_cq *cq; | |
2696 | ||
2697 | cur = wq->head - wq->tail; | |
0e6e7416 | 2698 | if (likely(cur + nreq < wq->max_post)) |
225c7b1f RD |
2699 | return 0; |
2700 | ||
2701 | cq = to_mcq(ib_cq); | |
2702 | spin_lock(&cq->lock); | |
2703 | cur = wq->head - wq->tail; | |
2704 | spin_unlock(&cq->lock); | |
2705 | ||
0e6e7416 | 2706 | return cur + nreq >= wq->max_post; |
225c7b1f RD |
2707 | } |
2708 | ||
95d04f07 RD |
2709 | static __be32 convert_access(int acc) |
2710 | { | |
6ff63e19 SM |
2711 | return (acc & IB_ACCESS_REMOTE_ATOMIC ? |
2712 | cpu_to_be32(MLX4_WQE_FMR_AND_BIND_PERM_ATOMIC) : 0) | | |
2713 | (acc & IB_ACCESS_REMOTE_WRITE ? | |
2714 | cpu_to_be32(MLX4_WQE_FMR_AND_BIND_PERM_REMOTE_WRITE) : 0) | | |
2715 | (acc & IB_ACCESS_REMOTE_READ ? | |
2716 | cpu_to_be32(MLX4_WQE_FMR_AND_BIND_PERM_REMOTE_READ) : 0) | | |
95d04f07 RD |
2717 | (acc & IB_ACCESS_LOCAL_WRITE ? cpu_to_be32(MLX4_WQE_FMR_PERM_LOCAL_WRITE) : 0) | |
2718 | cpu_to_be32(MLX4_WQE_FMR_PERM_LOCAL_READ); | |
2719 | } | |
2720 | ||
1b2cd0fc SG |
2721 | static void set_reg_seg(struct mlx4_wqe_fmr_seg *fseg, |
2722 | struct ib_reg_wr *wr) | |
2723 | { | |
2724 | struct mlx4_ib_mr *mr = to_mmr(wr->mr); | |
2725 | ||
2726 | fseg->flags = convert_access(wr->access); | |
2727 | fseg->mem_key = cpu_to_be32(wr->key); | |
2728 | fseg->buf_list = cpu_to_be64(mr->page_map); | |
2729 | fseg->start_addr = cpu_to_be64(mr->ibmr.iova); | |
2730 | fseg->reg_len = cpu_to_be64(mr->ibmr.length); | |
2731 | fseg->offset = 0; /* XXX -- is this just for ZBVA? */ | |
2732 | fseg->page_size = cpu_to_be32(ilog2(mr->ibmr.page_size)); | |
2733 | fseg->reserved[0] = 0; | |
2734 | fseg->reserved[1] = 0; | |
2735 | } | |
2736 | ||
95d04f07 RD |
2737 | static void set_local_inv_seg(struct mlx4_wqe_local_inval_seg *iseg, u32 rkey) |
2738 | { | |
aee38fad SM |
2739 | memset(iseg, 0, sizeof(*iseg)); |
2740 | iseg->mem_key = cpu_to_be32(rkey); | |
95d04f07 RD |
2741 | } |
2742 | ||
0fbfa6a9 RD |
2743 | static __always_inline void set_raddr_seg(struct mlx4_wqe_raddr_seg *rseg, |
2744 | u64 remote_addr, u32 rkey) | |
2745 | { | |
2746 | rseg->raddr = cpu_to_be64(remote_addr); | |
2747 | rseg->rkey = cpu_to_be32(rkey); | |
2748 | rseg->reserved = 0; | |
2749 | } | |
2750 | ||
e622f2f4 CH |
2751 | static void set_atomic_seg(struct mlx4_wqe_atomic_seg *aseg, |
2752 | struct ib_atomic_wr *wr) | |
0fbfa6a9 | 2753 | { |
e622f2f4 CH |
2754 | if (wr->wr.opcode == IB_WR_ATOMIC_CMP_AND_SWP) { |
2755 | aseg->swap_add = cpu_to_be64(wr->swap); | |
2756 | aseg->compare = cpu_to_be64(wr->compare_add); | |
2757 | } else if (wr->wr.opcode == IB_WR_MASKED_ATOMIC_FETCH_AND_ADD) { | |
2758 | aseg->swap_add = cpu_to_be64(wr->compare_add); | |
2759 | aseg->compare = cpu_to_be64(wr->compare_add_mask); | |
0fbfa6a9 | 2760 | } else { |
e622f2f4 | 2761 | aseg->swap_add = cpu_to_be64(wr->compare_add); |
0fbfa6a9 RD |
2762 | aseg->compare = 0; |
2763 | } | |
2764 | ||
2765 | } | |
2766 | ||
6fa8f719 | 2767 | static void set_masked_atomic_seg(struct mlx4_wqe_masked_atomic_seg *aseg, |
e622f2f4 | 2768 | struct ib_atomic_wr *wr) |
6fa8f719 | 2769 | { |
e622f2f4 CH |
2770 | aseg->swap_add = cpu_to_be64(wr->swap); |
2771 | aseg->swap_add_mask = cpu_to_be64(wr->swap_mask); | |
2772 | aseg->compare = cpu_to_be64(wr->compare_add); | |
2773 | aseg->compare_mask = cpu_to_be64(wr->compare_add_mask); | |
6fa8f719 VS |
2774 | } |
2775 | ||
0fbfa6a9 | 2776 | static void set_datagram_seg(struct mlx4_wqe_datagram_seg *dseg, |
e622f2f4 | 2777 | struct ib_ud_wr *wr) |
0fbfa6a9 | 2778 | { |
e622f2f4 CH |
2779 | memcpy(dseg->av, &to_mah(wr->ah)->av, sizeof (struct mlx4_av)); |
2780 | dseg->dqpn = cpu_to_be32(wr->remote_qpn); | |
2781 | dseg->qkey = cpu_to_be32(wr->remote_qkey); | |
2782 | dseg->vlan = to_mah(wr->ah)->av.eth.vlan; | |
2783 | memcpy(dseg->mac, to_mah(wr->ah)->av.eth.mac, 6); | |
0fbfa6a9 RD |
2784 | } |
2785 | ||
1ffeb2eb JM |
2786 | static void set_tunnel_datagram_seg(struct mlx4_ib_dev *dev, |
2787 | struct mlx4_wqe_datagram_seg *dseg, | |
e622f2f4 | 2788 | struct ib_ud_wr *wr, |
97982f5a | 2789 | enum mlx4_ib_qp_type qpt) |
1ffeb2eb | 2790 | { |
e622f2f4 | 2791 | union mlx4_ext_av *av = &to_mah(wr->ah)->av; |
1ffeb2eb JM |
2792 | struct mlx4_av sqp_av = {0}; |
2793 | int port = *((u8 *) &av->ib.port_pd) & 0x3; | |
2794 | ||
2795 | /* force loopback */ | |
2796 | sqp_av.port_pd = av->ib.port_pd | cpu_to_be32(0x80000000); | |
2797 | sqp_av.g_slid = av->ib.g_slid & 0x7f; /* no GRH */ | |
2798 | sqp_av.sl_tclass_flowlabel = av->ib.sl_tclass_flowlabel & | |
2799 | cpu_to_be32(0xf0000000); | |
2800 | ||
2801 | memcpy(dseg->av, &sqp_av, sizeof (struct mlx4_av)); | |
97982f5a JM |
2802 | if (qpt == MLX4_IB_QPT_PROXY_GSI) |
2803 | dseg->dqpn = cpu_to_be32(dev->dev->caps.qp1_tunnel[port - 1]); | |
2804 | else | |
2805 | dseg->dqpn = cpu_to_be32(dev->dev->caps.qp0_tunnel[port - 1]); | |
47605df9 JM |
2806 | /* Use QKEY from the QP context, which is set by master */ |
2807 | dseg->qkey = cpu_to_be32(IB_QP_SET_QKEY); | |
1ffeb2eb JM |
2808 | } |
2809 | ||
e622f2f4 | 2810 | static void build_tunnel_header(struct ib_ud_wr *wr, void *wqe, unsigned *mlx_seg_len) |
1ffeb2eb JM |
2811 | { |
2812 | struct mlx4_wqe_inline_seg *inl = wqe; | |
2813 | struct mlx4_ib_tunnel_header hdr; | |
e622f2f4 | 2814 | struct mlx4_ib_ah *ah = to_mah(wr->ah); |
1ffeb2eb JM |
2815 | int spc; |
2816 | int i; | |
2817 | ||
2818 | memcpy(&hdr.av, &ah->av, sizeof hdr.av); | |
e622f2f4 CH |
2819 | hdr.remote_qpn = cpu_to_be32(wr->remote_qpn); |
2820 | hdr.pkey_index = cpu_to_be16(wr->pkey_index); | |
2821 | hdr.qkey = cpu_to_be32(wr->remote_qkey); | |
5ea8bbfc JM |
2822 | memcpy(hdr.mac, ah->av.eth.mac, 6); |
2823 | hdr.vlan = ah->av.eth.vlan; | |
1ffeb2eb JM |
2824 | |
2825 | spc = MLX4_INLINE_ALIGN - | |
2826 | ((unsigned long) (inl + 1) & (MLX4_INLINE_ALIGN - 1)); | |
2827 | if (sizeof (hdr) <= spc) { | |
2828 | memcpy(inl + 1, &hdr, sizeof (hdr)); | |
2829 | wmb(); | |
2830 | inl->byte_count = cpu_to_be32(1 << 31 | sizeof (hdr)); | |
2831 | i = 1; | |
2832 | } else { | |
2833 | memcpy(inl + 1, &hdr, spc); | |
2834 | wmb(); | |
2835 | inl->byte_count = cpu_to_be32(1 << 31 | spc); | |
2836 | ||
2837 | inl = (void *) (inl + 1) + spc; | |
2838 | memcpy(inl + 1, (void *) &hdr + spc, sizeof (hdr) - spc); | |
2839 | wmb(); | |
2840 | inl->byte_count = cpu_to_be32(1 << 31 | (sizeof (hdr) - spc)); | |
2841 | i = 2; | |
2842 | } | |
2843 | ||
2844 | *mlx_seg_len = | |
2845 | ALIGN(i * sizeof (struct mlx4_wqe_inline_seg) + sizeof (hdr), 16); | |
2846 | } | |
2847 | ||
6e694ea3 JM |
2848 | static void set_mlx_icrc_seg(void *dseg) |
2849 | { | |
2850 | u32 *t = dseg; | |
2851 | struct mlx4_wqe_inline_seg *iseg = dseg; | |
2852 | ||
2853 | t[1] = 0; | |
2854 | ||
2855 | /* | |
2856 | * Need a barrier here before writing the byte_count field to | |
2857 | * make sure that all the data is visible before the | |
2858 | * byte_count field is set. Otherwise, if the segment begins | |
2859 | * a new cacheline, the HCA prefetcher could grab the 64-byte | |
2860 | * chunk and get a valid (!= * 0xffffffff) byte count but | |
2861 | * stale data, and end up sending the wrong data. | |
2862 | */ | |
2863 | wmb(); | |
2864 | ||
2865 | iseg->byte_count = cpu_to_be32((1 << 31) | 4); | |
2866 | } | |
2867 | ||
2868 | static void set_data_seg(struct mlx4_wqe_data_seg *dseg, struct ib_sge *sg) | |
d420d9e3 | 2869 | { |
d420d9e3 RD |
2870 | dseg->lkey = cpu_to_be32(sg->lkey); |
2871 | dseg->addr = cpu_to_be64(sg->addr); | |
6e694ea3 JM |
2872 | |
2873 | /* | |
2874 | * Need a barrier here before writing the byte_count field to | |
2875 | * make sure that all the data is visible before the | |
2876 | * byte_count field is set. Otherwise, if the segment begins | |
2877 | * a new cacheline, the HCA prefetcher could grab the 64-byte | |
2878 | * chunk and get a valid (!= * 0xffffffff) byte count but | |
2879 | * stale data, and end up sending the wrong data. | |
2880 | */ | |
2881 | wmb(); | |
2882 | ||
2883 | dseg->byte_count = cpu_to_be32(sg->length); | |
d420d9e3 RD |
2884 | } |
2885 | ||
2242fa4f RD |
2886 | static void __set_data_seg(struct mlx4_wqe_data_seg *dseg, struct ib_sge *sg) |
2887 | { | |
2888 | dseg->byte_count = cpu_to_be32(sg->length); | |
2889 | dseg->lkey = cpu_to_be32(sg->lkey); | |
2890 | dseg->addr = cpu_to_be64(sg->addr); | |
2891 | } | |
2892 | ||
e622f2f4 | 2893 | static int build_lso_seg(struct mlx4_wqe_lso_seg *wqe, struct ib_ud_wr *wr, |
0fd7e1d8 | 2894 | struct mlx4_ib_qp *qp, unsigned *lso_seg_len, |
417608c2 | 2895 | __be32 *lso_hdr_sz, __be32 *blh) |
b832be1e | 2896 | { |
e622f2f4 | 2897 | unsigned halign = ALIGN(sizeof *wqe + wr->hlen, 16); |
b832be1e | 2898 | |
417608c2 EC |
2899 | if (unlikely(halign > MLX4_IB_CACHE_LINE_SIZE)) |
2900 | *blh = cpu_to_be32(1 << 6); | |
b832be1e EC |
2901 | |
2902 | if (unlikely(!(qp->flags & MLX4_IB_QP_LSO) && | |
e622f2f4 | 2903 | wr->wr.num_sge > qp->sq.max_gs - (halign >> 4))) |
b832be1e EC |
2904 | return -EINVAL; |
2905 | ||
e622f2f4 | 2906 | memcpy(wqe->header, wr->header, wr->hlen); |
b832be1e | 2907 | |
e622f2f4 | 2908 | *lso_hdr_sz = cpu_to_be32(wr->mss << 16 | wr->hlen); |
b832be1e EC |
2909 | *lso_seg_len = halign; |
2910 | return 0; | |
2911 | } | |
2912 | ||
95d04f07 RD |
2913 | static __be32 send_ieth(struct ib_send_wr *wr) |
2914 | { | |
2915 | switch (wr->opcode) { | |
2916 | case IB_WR_SEND_WITH_IMM: | |
2917 | case IB_WR_RDMA_WRITE_WITH_IMM: | |
2918 | return wr->ex.imm_data; | |
2919 | ||
2920 | case IB_WR_SEND_WITH_INV: | |
2921 | return cpu_to_be32(wr->ex.invalidate_rkey); | |
2922 | ||
2923 | default: | |
2924 | return 0; | |
2925 | } | |
2926 | } | |
2927 | ||
1ffeb2eb JM |
2928 | static void add_zero_len_inline(void *wqe) |
2929 | { | |
2930 | struct mlx4_wqe_inline_seg *inl = wqe; | |
2931 | memset(wqe, 0, 16); | |
2932 | inl->byte_count = cpu_to_be32(1 << 31); | |
2933 | } | |
2934 | ||
225c7b1f RD |
2935 | int mlx4_ib_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr, |
2936 | struct ib_send_wr **bad_wr) | |
2937 | { | |
2938 | struct mlx4_ib_qp *qp = to_mqp(ibqp); | |
2939 | void *wqe; | |
2940 | struct mlx4_wqe_ctrl_seg *ctrl; | |
6e694ea3 | 2941 | struct mlx4_wqe_data_seg *dseg; |
225c7b1f RD |
2942 | unsigned long flags; |
2943 | int nreq; | |
2944 | int err = 0; | |
ea54b10c JM |
2945 | unsigned ind; |
2946 | int uninitialized_var(stamp); | |
2947 | int uninitialized_var(size); | |
a3d8e159 | 2948 | unsigned uninitialized_var(seglen); |
0fd7e1d8 RD |
2949 | __be32 dummy; |
2950 | __be32 *lso_wqe; | |
2951 | __be32 uninitialized_var(lso_hdr_sz); | |
417608c2 | 2952 | __be32 blh; |
225c7b1f | 2953 | int i; |
35f05dab | 2954 | struct mlx4_ib_dev *mdev = to_mdev(ibqp->device); |
225c7b1f | 2955 | |
e1b866c6 MS |
2956 | if (qp->mlx4_ib_qp_type == MLX4_IB_QPT_GSI) { |
2957 | struct mlx4_ib_sqp *sqp = to_msqp(qp); | |
2958 | ||
2959 | if (sqp->roce_v2_gsi) { | |
2960 | struct mlx4_ib_ah *ah = to_mah(ud_wr(wr)->ah); | |
a748d60d | 2961 | enum ib_gid_type gid_type; |
e1b866c6 MS |
2962 | union ib_gid gid; |
2963 | ||
a748d60d TB |
2964 | if (!fill_gid_by_hw_index(mdev, sqp->qp.port, |
2965 | ah->av.ib.gid_index, | |
2966 | &gid, &gid_type)) | |
2967 | qp = (gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP) ? | |
2968 | to_mqp(sqp->roce_v2_gsi) : qp; | |
2969 | else | |
e1b866c6 MS |
2970 | pr_err("Failed to get gid at index %d. RoCEv2 will not work properly\n", |
2971 | ah->av.ib.gid_index); | |
e1b866c6 MS |
2972 | } |
2973 | } | |
2974 | ||
96db0e03 | 2975 | spin_lock_irqsave(&qp->sq.lock, flags); |
35f05dab YH |
2976 | if (mdev->dev->persist->state & MLX4_DEVICE_STATE_INTERNAL_ERROR) { |
2977 | err = -EIO; | |
2978 | *bad_wr = wr; | |
2979 | nreq = 0; | |
2980 | goto out; | |
2981 | } | |
225c7b1f | 2982 | |
ea54b10c | 2983 | ind = qp->sq_next_wqe; |
225c7b1f RD |
2984 | |
2985 | for (nreq = 0; wr; ++nreq, wr = wr->next) { | |
0fd7e1d8 | 2986 | lso_wqe = &dummy; |
417608c2 | 2987 | blh = 0; |
0fd7e1d8 | 2988 | |
225c7b1f RD |
2989 | if (mlx4_wq_overflow(&qp->sq, nreq, qp->ibqp.send_cq)) { |
2990 | err = -ENOMEM; | |
2991 | *bad_wr = wr; | |
2992 | goto out; | |
2993 | } | |
2994 | ||
2995 | if (unlikely(wr->num_sge > qp->sq.max_gs)) { | |
2996 | err = -EINVAL; | |
2997 | *bad_wr = wr; | |
2998 | goto out; | |
2999 | } | |
3000 | ||
0e6e7416 | 3001 | ctrl = wqe = get_send_wqe(qp, ind & (qp->sq.wqe_cnt - 1)); |
ea54b10c | 3002 | qp->sq.wrid[(qp->sq.head + nreq) & (qp->sq.wqe_cnt - 1)] = wr->wr_id; |
225c7b1f RD |
3003 | |
3004 | ctrl->srcrb_flags = | |
3005 | (wr->send_flags & IB_SEND_SIGNALED ? | |
3006 | cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE) : 0) | | |
3007 | (wr->send_flags & IB_SEND_SOLICITED ? | |
3008 | cpu_to_be32(MLX4_WQE_CTRL_SOLICITED) : 0) | | |
8ff095ec EC |
3009 | ((wr->send_flags & IB_SEND_IP_CSUM) ? |
3010 | cpu_to_be32(MLX4_WQE_CTRL_IP_CSUM | | |
3011 | MLX4_WQE_CTRL_TCP_UDP_CSUM) : 0) | | |
225c7b1f RD |
3012 | qp->sq_signal_bits; |
3013 | ||
95d04f07 | 3014 | ctrl->imm = send_ieth(wr); |
225c7b1f RD |
3015 | |
3016 | wqe += sizeof *ctrl; | |
3017 | size = sizeof *ctrl / 16; | |
3018 | ||
1ffeb2eb JM |
3019 | switch (qp->mlx4_ib_qp_type) { |
3020 | case MLX4_IB_QPT_RC: | |
3021 | case MLX4_IB_QPT_UC: | |
225c7b1f RD |
3022 | switch (wr->opcode) { |
3023 | case IB_WR_ATOMIC_CMP_AND_SWP: | |
3024 | case IB_WR_ATOMIC_FETCH_AND_ADD: | |
6fa8f719 | 3025 | case IB_WR_MASKED_ATOMIC_FETCH_AND_ADD: |
e622f2f4 CH |
3026 | set_raddr_seg(wqe, atomic_wr(wr)->remote_addr, |
3027 | atomic_wr(wr)->rkey); | |
225c7b1f RD |
3028 | wqe += sizeof (struct mlx4_wqe_raddr_seg); |
3029 | ||
e622f2f4 | 3030 | set_atomic_seg(wqe, atomic_wr(wr)); |
225c7b1f | 3031 | wqe += sizeof (struct mlx4_wqe_atomic_seg); |
0fbfa6a9 | 3032 | |
225c7b1f RD |
3033 | size += (sizeof (struct mlx4_wqe_raddr_seg) + |
3034 | sizeof (struct mlx4_wqe_atomic_seg)) / 16; | |
6fa8f719 VS |
3035 | |
3036 | break; | |
3037 | ||
3038 | case IB_WR_MASKED_ATOMIC_CMP_AND_SWP: | |
e622f2f4 CH |
3039 | set_raddr_seg(wqe, atomic_wr(wr)->remote_addr, |
3040 | atomic_wr(wr)->rkey); | |
6fa8f719 VS |
3041 | wqe += sizeof (struct mlx4_wqe_raddr_seg); |
3042 | ||
e622f2f4 | 3043 | set_masked_atomic_seg(wqe, atomic_wr(wr)); |
6fa8f719 VS |
3044 | wqe += sizeof (struct mlx4_wqe_masked_atomic_seg); |
3045 | ||
3046 | size += (sizeof (struct mlx4_wqe_raddr_seg) + | |
3047 | sizeof (struct mlx4_wqe_masked_atomic_seg)) / 16; | |
225c7b1f RD |
3048 | |
3049 | break; | |
3050 | ||
3051 | case IB_WR_RDMA_READ: | |
3052 | case IB_WR_RDMA_WRITE: | |
3053 | case IB_WR_RDMA_WRITE_WITH_IMM: | |
e622f2f4 CH |
3054 | set_raddr_seg(wqe, rdma_wr(wr)->remote_addr, |
3055 | rdma_wr(wr)->rkey); | |
225c7b1f RD |
3056 | wqe += sizeof (struct mlx4_wqe_raddr_seg); |
3057 | size += sizeof (struct mlx4_wqe_raddr_seg) / 16; | |
225c7b1f | 3058 | break; |
95d04f07 RD |
3059 | |
3060 | case IB_WR_LOCAL_INV: | |
2ac6bf4d JM |
3061 | ctrl->srcrb_flags |= |
3062 | cpu_to_be32(MLX4_WQE_CTRL_STRONG_ORDER); | |
95d04f07 RD |
3063 | set_local_inv_seg(wqe, wr->ex.invalidate_rkey); |
3064 | wqe += sizeof (struct mlx4_wqe_local_inval_seg); | |
3065 | size += sizeof (struct mlx4_wqe_local_inval_seg) / 16; | |
3066 | break; | |
3067 | ||
1b2cd0fc SG |
3068 | case IB_WR_REG_MR: |
3069 | ctrl->srcrb_flags |= | |
3070 | cpu_to_be32(MLX4_WQE_CTRL_STRONG_ORDER); | |
3071 | set_reg_seg(wqe, reg_wr(wr)); | |
3072 | wqe += sizeof(struct mlx4_wqe_fmr_seg); | |
3073 | size += sizeof(struct mlx4_wqe_fmr_seg) / 16; | |
3074 | break; | |
3075 | ||
225c7b1f RD |
3076 | default: |
3077 | /* No extra segments required for sends */ | |
3078 | break; | |
3079 | } | |
3080 | break; | |
3081 | ||
1ffeb2eb | 3082 | case MLX4_IB_QPT_TUN_SMI_OWNER: |
e622f2f4 CH |
3083 | err = build_sriov_qp0_header(to_msqp(qp), ud_wr(wr), |
3084 | ctrl, &seglen); | |
1ffeb2eb JM |
3085 | if (unlikely(err)) { |
3086 | *bad_wr = wr; | |
3087 | goto out; | |
3088 | } | |
3089 | wqe += seglen; | |
3090 | size += seglen / 16; | |
3091 | break; | |
3092 | case MLX4_IB_QPT_TUN_SMI: | |
3093 | case MLX4_IB_QPT_TUN_GSI: | |
3094 | /* this is a UD qp used in MAD responses to slaves. */ | |
e622f2f4 | 3095 | set_datagram_seg(wqe, ud_wr(wr)); |
1ffeb2eb JM |
3096 | /* set the forced-loopback bit in the data seg av */ |
3097 | *(__be32 *) wqe |= cpu_to_be32(0x80000000); | |
3098 | wqe += sizeof (struct mlx4_wqe_datagram_seg); | |
3099 | size += sizeof (struct mlx4_wqe_datagram_seg) / 16; | |
3100 | break; | |
3101 | case MLX4_IB_QPT_UD: | |
e622f2f4 | 3102 | set_datagram_seg(wqe, ud_wr(wr)); |
225c7b1f RD |
3103 | wqe += sizeof (struct mlx4_wqe_datagram_seg); |
3104 | size += sizeof (struct mlx4_wqe_datagram_seg) / 16; | |
b832be1e EC |
3105 | |
3106 | if (wr->opcode == IB_WR_LSO) { | |
e622f2f4 CH |
3107 | err = build_lso_seg(wqe, ud_wr(wr), qp, &seglen, |
3108 | &lso_hdr_sz, &blh); | |
b832be1e EC |
3109 | if (unlikely(err)) { |
3110 | *bad_wr = wr; | |
3111 | goto out; | |
3112 | } | |
0fd7e1d8 | 3113 | lso_wqe = (__be32 *) wqe; |
b832be1e EC |
3114 | wqe += seglen; |
3115 | size += seglen / 16; | |
3116 | } | |
225c7b1f RD |
3117 | break; |
3118 | ||
1ffeb2eb | 3119 | case MLX4_IB_QPT_PROXY_SMI_OWNER: |
e622f2f4 CH |
3120 | err = build_sriov_qp0_header(to_msqp(qp), ud_wr(wr), |
3121 | ctrl, &seglen); | |
1ffeb2eb JM |
3122 | if (unlikely(err)) { |
3123 | *bad_wr = wr; | |
3124 | goto out; | |
3125 | } | |
3126 | wqe += seglen; | |
3127 | size += seglen / 16; | |
3128 | /* to start tunnel header on a cache-line boundary */ | |
3129 | add_zero_len_inline(wqe); | |
3130 | wqe += 16; | |
3131 | size++; | |
e622f2f4 | 3132 | build_tunnel_header(ud_wr(wr), wqe, &seglen); |
1ffeb2eb JM |
3133 | wqe += seglen; |
3134 | size += seglen / 16; | |
3135 | break; | |
3136 | case MLX4_IB_QPT_PROXY_SMI: | |
1ffeb2eb JM |
3137 | case MLX4_IB_QPT_PROXY_GSI: |
3138 | /* If we are tunneling special qps, this is a UD qp. | |
3139 | * In this case we first add a UD segment targeting | |
3140 | * the tunnel qp, and then add a header with address | |
3141 | * information */ | |
e622f2f4 CH |
3142 | set_tunnel_datagram_seg(to_mdev(ibqp->device), wqe, |
3143 | ud_wr(wr), | |
97982f5a | 3144 | qp->mlx4_ib_qp_type); |
1ffeb2eb JM |
3145 | wqe += sizeof (struct mlx4_wqe_datagram_seg); |
3146 | size += sizeof (struct mlx4_wqe_datagram_seg) / 16; | |
e622f2f4 | 3147 | build_tunnel_header(ud_wr(wr), wqe, &seglen); |
1ffeb2eb JM |
3148 | wqe += seglen; |
3149 | size += seglen / 16; | |
3150 | break; | |
3151 | ||
3152 | case MLX4_IB_QPT_SMI: | |
3153 | case MLX4_IB_QPT_GSI: | |
e622f2f4 CH |
3154 | err = build_mlx_header(to_msqp(qp), ud_wr(wr), ctrl, |
3155 | &seglen); | |
f438000f | 3156 | if (unlikely(err)) { |
225c7b1f RD |
3157 | *bad_wr = wr; |
3158 | goto out; | |
3159 | } | |
f438000f RD |
3160 | wqe += seglen; |
3161 | size += seglen / 16; | |
225c7b1f RD |
3162 | break; |
3163 | ||
3164 | default: | |
3165 | break; | |
3166 | } | |
3167 | ||
6e694ea3 JM |
3168 | /* |
3169 | * Write data segments in reverse order, so as to | |
3170 | * overwrite cacheline stamp last within each | |
3171 | * cacheline. This avoids issues with WQE | |
3172 | * prefetching. | |
3173 | */ | |
225c7b1f | 3174 | |
6e694ea3 JM |
3175 | dseg = wqe; |
3176 | dseg += wr->num_sge - 1; | |
3177 | size += wr->num_sge * (sizeof (struct mlx4_wqe_data_seg) / 16); | |
225c7b1f RD |
3178 | |
3179 | /* Add one more inline data segment for ICRC for MLX sends */ | |
1ffeb2eb JM |
3180 | if (unlikely(qp->mlx4_ib_qp_type == MLX4_IB_QPT_SMI || |
3181 | qp->mlx4_ib_qp_type == MLX4_IB_QPT_GSI || | |
3182 | qp->mlx4_ib_qp_type & | |
3183 | (MLX4_IB_QPT_PROXY_SMI_OWNER | MLX4_IB_QPT_TUN_SMI_OWNER))) { | |
6e694ea3 | 3184 | set_mlx_icrc_seg(dseg + 1); |
225c7b1f RD |
3185 | size += sizeof (struct mlx4_wqe_data_seg) / 16; |
3186 | } | |
3187 | ||
6e694ea3 JM |
3188 | for (i = wr->num_sge - 1; i >= 0; --i, --dseg) |
3189 | set_data_seg(dseg, wr->sg_list + i); | |
3190 | ||
0fd7e1d8 RD |
3191 | /* |
3192 | * Possibly overwrite stamping in cacheline with LSO | |
3193 | * segment only after making sure all data segments | |
3194 | * are written. | |
3195 | */ | |
3196 | wmb(); | |
3197 | *lso_wqe = lso_hdr_sz; | |
3198 | ||
224e92e0 BB |
3199 | ctrl->qpn_vlan.fence_size = (wr->send_flags & IB_SEND_FENCE ? |
3200 | MLX4_WQE_CTRL_FENCE : 0) | size; | |
225c7b1f RD |
3201 | |
3202 | /* | |
3203 | * Make sure descriptor is fully written before | |
3204 | * setting ownership bit (because HW can start | |
3205 | * executing as soon as we do). | |
3206 | */ | |
3207 | wmb(); | |
3208 | ||
59b0ed12 | 3209 | if (wr->opcode < 0 || wr->opcode >= ARRAY_SIZE(mlx4_ib_opcode)) { |
4ba6b8ea | 3210 | *bad_wr = wr; |
225c7b1f RD |
3211 | err = -EINVAL; |
3212 | goto out; | |
3213 | } | |
3214 | ||
3215 | ctrl->owner_opcode = mlx4_ib_opcode[wr->opcode] | | |
417608c2 | 3216 | (ind & qp->sq.wqe_cnt ? cpu_to_be32(1 << 31) : 0) | blh; |
0e6e7416 | 3217 | |
ea54b10c JM |
3218 | stamp = ind + qp->sq_spare_wqes; |
3219 | ind += DIV_ROUND_UP(size * 16, 1U << qp->sq.wqe_shift); | |
3220 | ||
0e6e7416 RD |
3221 | /* |
3222 | * We can improve latency by not stamping the last | |
3223 | * send queue WQE until after ringing the doorbell, so | |
3224 | * only stamp here if there are still more WQEs to post. | |
ea54b10c JM |
3225 | * |
3226 | * Same optimization applies to padding with NOP wqe | |
3227 | * in case of WQE shrinking (used to prevent wrap-around | |
3228 | * in the middle of WR). | |
0e6e7416 | 3229 | */ |
ea54b10c JM |
3230 | if (wr->next) { |
3231 | stamp_send_wqe(qp, stamp, size * 16); | |
3232 | ind = pad_wraparound(qp, ind); | |
3233 | } | |
225c7b1f RD |
3234 | } |
3235 | ||
3236 | out: | |
3237 | if (likely(nreq)) { | |
3238 | qp->sq.head += nreq; | |
3239 | ||
3240 | /* | |
3241 | * Make sure that descriptors are written before | |
3242 | * doorbell record. | |
3243 | */ | |
3244 | wmb(); | |
3245 | ||
3246 | writel(qp->doorbell_qpn, | |
3247 | to_mdev(ibqp->device)->uar_map + MLX4_SEND_DOORBELL); | |
3248 | ||
3249 | /* | |
3250 | * Make sure doorbells don't leak out of SQ spinlock | |
3251 | * and reach the HCA out of order. | |
3252 | */ | |
3253 | mmiowb(); | |
0e6e7416 | 3254 | |
ea54b10c JM |
3255 | stamp_send_wqe(qp, stamp, size * 16); |
3256 | ||
3257 | ind = pad_wraparound(qp, ind); | |
3258 | qp->sq_next_wqe = ind; | |
225c7b1f RD |
3259 | } |
3260 | ||
96db0e03 | 3261 | spin_unlock_irqrestore(&qp->sq.lock, flags); |
225c7b1f RD |
3262 | |
3263 | return err; | |
3264 | } | |
3265 | ||
3266 | int mlx4_ib_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *wr, | |
3267 | struct ib_recv_wr **bad_wr) | |
3268 | { | |
3269 | struct mlx4_ib_qp *qp = to_mqp(ibqp); | |
3270 | struct mlx4_wqe_data_seg *scat; | |
3271 | unsigned long flags; | |
3272 | int err = 0; | |
3273 | int nreq; | |
3274 | int ind; | |
1ffeb2eb | 3275 | int max_gs; |
225c7b1f | 3276 | int i; |
35f05dab | 3277 | struct mlx4_ib_dev *mdev = to_mdev(ibqp->device); |
225c7b1f | 3278 | |
1ffeb2eb | 3279 | max_gs = qp->rq.max_gs; |
225c7b1f RD |
3280 | spin_lock_irqsave(&qp->rq.lock, flags); |
3281 | ||
35f05dab YH |
3282 | if (mdev->dev->persist->state & MLX4_DEVICE_STATE_INTERNAL_ERROR) { |
3283 | err = -EIO; | |
3284 | *bad_wr = wr; | |
3285 | nreq = 0; | |
3286 | goto out; | |
3287 | } | |
3288 | ||
0e6e7416 | 3289 | ind = qp->rq.head & (qp->rq.wqe_cnt - 1); |
225c7b1f RD |
3290 | |
3291 | for (nreq = 0; wr; ++nreq, wr = wr->next) { | |
2b946077 | 3292 | if (mlx4_wq_overflow(&qp->rq, nreq, qp->ibqp.recv_cq)) { |
225c7b1f RD |
3293 | err = -ENOMEM; |
3294 | *bad_wr = wr; | |
3295 | goto out; | |
3296 | } | |
3297 | ||
3298 | if (unlikely(wr->num_sge > qp->rq.max_gs)) { | |
3299 | err = -EINVAL; | |
3300 | *bad_wr = wr; | |
3301 | goto out; | |
3302 | } | |
3303 | ||
3304 | scat = get_recv_wqe(qp, ind); | |
3305 | ||
1ffeb2eb JM |
3306 | if (qp->mlx4_ib_qp_type & (MLX4_IB_QPT_PROXY_SMI_OWNER | |
3307 | MLX4_IB_QPT_PROXY_SMI | MLX4_IB_QPT_PROXY_GSI)) { | |
3308 | ib_dma_sync_single_for_device(ibqp->device, | |
3309 | qp->sqp_proxy_rcv[ind].map, | |
3310 | sizeof (struct mlx4_ib_proxy_sqp_hdr), | |
3311 | DMA_FROM_DEVICE); | |
3312 | scat->byte_count = | |
3313 | cpu_to_be32(sizeof (struct mlx4_ib_proxy_sqp_hdr)); | |
3314 | /* use dma lkey from upper layer entry */ | |
3315 | scat->lkey = cpu_to_be32(wr->sg_list->lkey); | |
3316 | scat->addr = cpu_to_be64(qp->sqp_proxy_rcv[ind].map); | |
3317 | scat++; | |
3318 | max_gs--; | |
3319 | } | |
3320 | ||
2242fa4f RD |
3321 | for (i = 0; i < wr->num_sge; ++i) |
3322 | __set_data_seg(scat + i, wr->sg_list + i); | |
225c7b1f | 3323 | |
1ffeb2eb | 3324 | if (i < max_gs) { |
225c7b1f RD |
3325 | scat[i].byte_count = 0; |
3326 | scat[i].lkey = cpu_to_be32(MLX4_INVALID_LKEY); | |
3327 | scat[i].addr = 0; | |
3328 | } | |
3329 | ||
3330 | qp->rq.wrid[ind] = wr->wr_id; | |
3331 | ||
0e6e7416 | 3332 | ind = (ind + 1) & (qp->rq.wqe_cnt - 1); |
225c7b1f RD |
3333 | } |
3334 | ||
3335 | out: | |
3336 | if (likely(nreq)) { | |
3337 | qp->rq.head += nreq; | |
3338 | ||
3339 | /* | |
3340 | * Make sure that descriptors are written before | |
3341 | * doorbell record. | |
3342 | */ | |
3343 | wmb(); | |
3344 | ||
3345 | *qp->db.db = cpu_to_be32(qp->rq.head & 0xffff); | |
3346 | } | |
3347 | ||
3348 | spin_unlock_irqrestore(&qp->rq.lock, flags); | |
3349 | ||
3350 | return err; | |
3351 | } | |
6a775e2b JM |
3352 | |
3353 | static inline enum ib_qp_state to_ib_qp_state(enum mlx4_qp_state mlx4_state) | |
3354 | { | |
3355 | switch (mlx4_state) { | |
3356 | case MLX4_QP_STATE_RST: return IB_QPS_RESET; | |
3357 | case MLX4_QP_STATE_INIT: return IB_QPS_INIT; | |
3358 | case MLX4_QP_STATE_RTR: return IB_QPS_RTR; | |
3359 | case MLX4_QP_STATE_RTS: return IB_QPS_RTS; | |
3360 | case MLX4_QP_STATE_SQ_DRAINING: | |
3361 | case MLX4_QP_STATE_SQD: return IB_QPS_SQD; | |
3362 | case MLX4_QP_STATE_SQER: return IB_QPS_SQE; | |
3363 | case MLX4_QP_STATE_ERR: return IB_QPS_ERR; | |
3364 | default: return -1; | |
3365 | } | |
3366 | } | |
3367 | ||
3368 | static inline enum ib_mig_state to_ib_mig_state(int mlx4_mig_state) | |
3369 | { | |
3370 | switch (mlx4_mig_state) { | |
3371 | case MLX4_QP_PM_ARMED: return IB_MIG_ARMED; | |
3372 | case MLX4_QP_PM_REARM: return IB_MIG_REARM; | |
3373 | case MLX4_QP_PM_MIGRATED: return IB_MIG_MIGRATED; | |
3374 | default: return -1; | |
3375 | } | |
3376 | } | |
3377 | ||
3378 | static int to_ib_qp_access_flags(int mlx4_flags) | |
3379 | { | |
3380 | int ib_flags = 0; | |
3381 | ||
3382 | if (mlx4_flags & MLX4_QP_BIT_RRE) | |
3383 | ib_flags |= IB_ACCESS_REMOTE_READ; | |
3384 | if (mlx4_flags & MLX4_QP_BIT_RWE) | |
3385 | ib_flags |= IB_ACCESS_REMOTE_WRITE; | |
3386 | if (mlx4_flags & MLX4_QP_BIT_RAE) | |
3387 | ib_flags |= IB_ACCESS_REMOTE_ATOMIC; | |
3388 | ||
3389 | return ib_flags; | |
3390 | } | |
3391 | ||
71d53ab4 | 3392 | static void to_rdma_ah_attr(struct mlx4_ib_dev *ibdev, |
d8966fcd | 3393 | struct rdma_ah_attr *ah_attr, |
71d53ab4 | 3394 | struct mlx4_qp_path *path) |
6a775e2b | 3395 | { |
4c3eb3ca | 3396 | struct mlx4_dev *dev = ibdev->dev; |
d8966fcd | 3397 | u8 port_num = path->sched_queue & 0x40 ? 2 : 1; |
4c3eb3ca | 3398 | |
d8966fcd | 3399 | memset(ah_attr, 0, sizeof(*ah_attr)); |
44c58487 | 3400 | ah_attr->type = rdma_ah_find_type(&ibdev->ib_dev, port_num); |
d8966fcd | 3401 | if (port_num == 0 || port_num > dev->caps.num_ports) |
6a775e2b JM |
3402 | return; |
3403 | ||
44c58487 | 3404 | if (ah_attr->type == RDMA_AH_ATTR_TYPE_ROCE) |
d8966fcd DC |
3405 | rdma_ah_set_sl(ah_attr, ((path->sched_queue >> 3) & 0x7) | |
3406 | ((path->sched_queue & 4) << 1)); | |
4c3eb3ca | 3407 | else |
d8966fcd | 3408 | rdma_ah_set_sl(ah_attr, (path->sched_queue >> 2) & 0xf); |
44c58487 | 3409 | rdma_ah_set_port_num(ah_attr, port_num); |
4c3eb3ca | 3410 | |
d8966fcd DC |
3411 | rdma_ah_set_dlid(ah_attr, be16_to_cpu(path->rlid)); |
3412 | rdma_ah_set_path_bits(ah_attr, path->grh_mylmc & 0x7f); | |
3413 | rdma_ah_set_static_rate(ah_attr, | |
3414 | path->static_rate ? path->static_rate - 5 : 0); | |
3415 | if (path->grh_mylmc & (1 << 7)) { | |
3416 | rdma_ah_set_grh(ah_attr, NULL, | |
3417 | be32_to_cpu(path->tclass_flowlabel) & 0xfffff, | |
3418 | path->mgid_index, | |
3419 | path->hop_limit, | |
3420 | (be32_to_cpu(path->tclass_flowlabel) | |
3421 | >> 20) & 0xff); | |
3422 | rdma_ah_set_dgid_raw(ah_attr, path->rgid); | |
6a775e2b JM |
3423 | } |
3424 | } | |
3425 | ||
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) | |
3428 | { | |
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; | |
3432 | int mlx4_state; | |
0df67030 DB |
3433 | int err = 0; |
3434 | ||
3435 | mutex_lock(&qp->mutex); | |
6a775e2b JM |
3436 | |
3437 | if (qp->state == IB_QPS_RESET) { | |
3438 | qp_attr->qp_state = IB_QPS_RESET; | |
3439 | goto done; | |
3440 | } | |
3441 | ||
3442 | err = mlx4_qp_query(dev->dev, &qp->mqp, &context); | |
0df67030 DB |
3443 | if (err) { |
3444 | err = -EINVAL; | |
3445 | goto out; | |
3446 | } | |
6a775e2b JM |
3447 | |
3448 | mlx4_state = be32_to_cpu(context.flags) >> 28; | |
3449 | ||
0df67030 DB |
3450 | qp->state = to_ib_qp_state(mlx4_state); |
3451 | qp_attr->qp_state = qp->state; | |
6a775e2b JM |
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)); | |
3461 | ||
3462 | if (qp->ibqp.qp_type == IB_QPT_RC || qp->ibqp.qp_type == IB_QPT_UC) { | |
71d53ab4 DC |
3463 | to_rdma_ah_attr(dev, &qp_attr->ah_attr, &context.pri_path); |
3464 | to_rdma_ah_attr(dev, &qp_attr->alt_ah_attr, &context.alt_path); | |
6a775e2b | 3465 | qp_attr->alt_pkey_index = context.alt_path.pkey_index & 0x7f; |
d8966fcd DC |
3466 | qp_attr->alt_port_num = |
3467 | rdma_ah_get_port_num(&qp_attr->alt_ah_attr); | |
6a775e2b JM |
3468 | } |
3469 | ||
3470 | qp_attr->pkey_index = context.pri_path.pkey_index & 0x7f; | |
1c27cb71 JM |
3471 | if (qp_attr->qp_state == IB_QPS_INIT) |
3472 | qp_attr->port_num = qp->port; | |
3473 | else | |
3474 | qp_attr->port_num = context.pri_path.sched_queue & 0x40 ? 2 : 1; | |
6a775e2b JM |
3475 | |
3476 | /* qp_attr->en_sqd_async_notify is only applicable in modify qp */ | |
3477 | qp_attr->sq_draining = mlx4_state == MLX4_QP_STATE_SQ_DRAINING; | |
3478 | ||
3479 | qp_attr->max_rd_atomic = 1 << ((be32_to_cpu(context.params1) >> 21) & 0x7); | |
3480 | ||
3481 | qp_attr->max_dest_rd_atomic = | |
3482 | 1 << ((be32_to_cpu(context.params2) >> 21) & 0x7); | |
3483 | qp_attr->min_rnr_timer = | |
3484 | (be32_to_cpu(context.rnr_nextrecvpsn) >> 24) & 0x1f; | |
3485 | qp_attr->timeout = context.pri_path.ackto >> 3; | |
3486 | qp_attr->retry_cnt = (be32_to_cpu(context.params1) >> 16) & 0x7; | |
3487 | qp_attr->rnr_retry = (be32_to_cpu(context.params1) >> 13) & 0x7; | |
3488 | qp_attr->alt_timeout = context.alt_path.ackto >> 3; | |
3489 | ||
3490 | done: | |
3491 | qp_attr->cur_qp_state = qp_attr->qp_state; | |
7f5eb9bb RD |
3492 | qp_attr->cap.max_recv_wr = qp->rq.wqe_cnt; |
3493 | qp_attr->cap.max_recv_sge = qp->rq.max_gs; | |
3494 | ||
6a775e2b | 3495 | if (!ibqp->uobject) { |
7f5eb9bb RD |
3496 | qp_attr->cap.max_send_wr = qp->sq.wqe_cnt; |
3497 | qp_attr->cap.max_send_sge = qp->sq.max_gs; | |
3498 | } else { | |
3499 | qp_attr->cap.max_send_wr = 0; | |
3500 | qp_attr->cap.max_send_sge = 0; | |
6a775e2b JM |
3501 | } |
3502 | ||
7f5eb9bb RD |
3503 | /* |
3504 | * We don't support inline sends for kernel QPs (yet), and we | |
3505 | * don't know what userspace's value should be. | |
3506 | */ | |
3507 | qp_attr->cap.max_inline_data = 0; | |
3508 | ||
3509 | qp_init_attr->cap = qp_attr->cap; | |
3510 | ||
521e575b RL |
3511 | qp_init_attr->create_flags = 0; |
3512 | if (qp->flags & MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK) | |
3513 | qp_init_attr->create_flags |= IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK; | |
3514 | ||
3515 | if (qp->flags & MLX4_IB_QP_LSO) | |
3516 | qp_init_attr->create_flags |= IB_QP_CREATE_IPOIB_UD_LSO; | |
3517 | ||
c1c98501 MB |
3518 | if (qp->flags & MLX4_IB_QP_NETIF) |
3519 | qp_init_attr->create_flags |= IB_QP_CREATE_NETIF_QP; | |
3520 | ||
46db567d DB |
3521 | qp_init_attr->sq_sig_type = |
3522 | qp->sq_signal_bits == cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE) ? | |
3523 | IB_SIGNAL_ALL_WR : IB_SIGNAL_REQ_WR; | |
3524 | ||
0df67030 DB |
3525 | out: |
3526 | mutex_unlock(&qp->mutex); | |
3527 | return err; | |
6a775e2b JM |
3528 | } |
3529 |