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225c7b1f RD |
1 | /* |
2 | * Copyright (c) 2007 Cisco Systems, Inc. All rights reserved. | |
3 | * | |
4 | * This software is available to you under a choice of one of two | |
5 | * licenses. You may choose to be licensed under the terms of the GNU | |
6 | * General Public License (GPL) Version 2, available from the file | |
7 | * COPYING in the main directory of this source tree, or the | |
8 | * OpenIB.org BSD license below: | |
9 | * | |
10 | * Redistribution and use in source and binary forms, with or | |
11 | * without modification, are permitted provided that the following | |
12 | * conditions are met: | |
13 | * | |
14 | * - Redistributions of source code must retain the above | |
15 | * copyright notice, this list of conditions and the following | |
16 | * disclaimer. | |
17 | * | |
18 | * - Redistributions in binary form must reproduce the above | |
19 | * copyright notice, this list of conditions and the following | |
20 | * disclaimer in the documentation and/or other materials | |
21 | * provided with the distribution. | |
22 | * | |
23 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | |
24 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
25 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | |
26 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS | |
27 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN | |
28 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | |
29 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
30 | * SOFTWARE. | |
31 | */ | |
32 | ||
33 | #include <rdma/ib_mad.h> | |
34 | #include <rdma/ib_smi.h> | |
37bfc7c1 JM |
35 | #include <rdma/ib_sa.h> |
36 | #include <rdma/ib_cache.h> | |
225c7b1f | 37 | |
afa8fd1d | 38 | #include <linux/random.h> |
225c7b1f | 39 | #include <linux/mlx4/cmd.h> |
5a0e3ad6 | 40 | #include <linux/gfp.h> |
c3779134 | 41 | #include <rdma/ib_pma.h> |
225c7b1f RD |
42 | |
43 | #include "mlx4_ib.h" | |
44 | ||
45 | enum { | |
46 | MLX4_IB_VENDOR_CLASS1 = 0x9, | |
47 | MLX4_IB_VENDOR_CLASS2 = 0xa | |
48 | }; | |
49 | ||
fc06573d JM |
50 | #define MLX4_TUN_SEND_WRID_SHIFT 34 |
51 | #define MLX4_TUN_QPN_SHIFT 32 | |
52 | #define MLX4_TUN_WRID_RECV (((u64) 1) << MLX4_TUN_SEND_WRID_SHIFT) | |
53 | #define MLX4_TUN_SET_WRID_QPN(a) (((u64) ((a) & 0x3)) << MLX4_TUN_QPN_SHIFT) | |
54 | ||
55 | #define MLX4_TUN_IS_RECV(a) (((a) >> MLX4_TUN_SEND_WRID_SHIFT) & 0x1) | |
56 | #define MLX4_TUN_WRID_QPN(a) (((a) >> MLX4_TUN_QPN_SHIFT) & 0x3) | |
57 | ||
2a4fae14 JM |
58 | /* Port mgmt change event handling */ |
59 | ||
60 | #define GET_BLK_PTR_FROM_EQE(eqe) be32_to_cpu(eqe->event.port_mgmt_change.params.tbl_change_info.block_ptr) | |
61 | #define GET_MASK_FROM_EQE(eqe) be32_to_cpu(eqe->event.port_mgmt_change.params.tbl_change_info.tbl_entries_mask) | |
62 | #define NUM_IDX_IN_PKEY_TBL_BLK 32 | |
63 | #define GUID_TBL_ENTRY_SIZE 8 /* size in bytes */ | |
64 | #define GUID_TBL_BLK_NUM_ENTRIES 8 | |
65 | #define GUID_TBL_BLK_SIZE (GUID_TBL_ENTRY_SIZE * GUID_TBL_BLK_NUM_ENTRIES) | |
66 | ||
fc06573d JM |
67 | struct mlx4_mad_rcv_buf { |
68 | struct ib_grh grh; | |
69 | u8 payload[256]; | |
70 | } __packed; | |
71 | ||
72 | struct mlx4_mad_snd_buf { | |
73 | u8 payload[256]; | |
74 | } __packed; | |
75 | ||
76 | struct mlx4_tunnel_mad { | |
77 | struct ib_grh grh; | |
78 | struct mlx4_ib_tunnel_header hdr; | |
79 | struct ib_mad mad; | |
80 | } __packed; | |
81 | ||
82 | struct mlx4_rcv_tunnel_mad { | |
83 | struct mlx4_rcv_tunnel_hdr hdr; | |
84 | struct ib_grh grh; | |
85 | struct ib_mad mad; | |
86 | } __packed; | |
87 | ||
b9c5d6a6 | 88 | static void handle_client_rereg_event(struct mlx4_ib_dev *dev, u8 port_num); |
2a4fae14 JM |
89 | static void handle_lid_change_event(struct mlx4_ib_dev *dev, u8 port_num); |
90 | static void __propagate_pkey_ev(struct mlx4_ib_dev *dev, int port_num, | |
91 | int block, u32 change_bitmap); | |
b9c5d6a6 | 92 | |
afa8fd1d JM |
93 | __be64 mlx4_ib_gen_node_guid(void) |
94 | { | |
95 | #define NODE_GUID_HI ((u64) (((u64)IB_OPENIB_OUI) << 40)) | |
50bea5c0 | 96 | return cpu_to_be64(NODE_GUID_HI | prandom_u32()); |
afa8fd1d JM |
97 | } |
98 | ||
b9c5d6a6 OD |
99 | __be64 mlx4_ib_get_new_demux_tid(struct mlx4_ib_demux_ctx *ctx) |
100 | { | |
101 | return cpu_to_be64(atomic_inc_return(&ctx->tid)) | | |
102 | cpu_to_be64(0xff00000000000000LL); | |
103 | } | |
104 | ||
0a9a0188 | 105 | int mlx4_MAD_IFC(struct mlx4_ib_dev *dev, int mad_ifc_flags, |
225c7b1f RD |
106 | int port, struct ib_wc *in_wc, struct ib_grh *in_grh, |
107 | void *in_mad, void *response_mad) | |
108 | { | |
109 | struct mlx4_cmd_mailbox *inmailbox, *outmailbox; | |
110 | void *inbox; | |
111 | int err; | |
112 | u32 in_modifier = port; | |
113 | u8 op_modifier = 0; | |
114 | ||
115 | inmailbox = mlx4_alloc_cmd_mailbox(dev->dev); | |
116 | if (IS_ERR(inmailbox)) | |
117 | return PTR_ERR(inmailbox); | |
118 | inbox = inmailbox->buf; | |
119 | ||
120 | outmailbox = mlx4_alloc_cmd_mailbox(dev->dev); | |
121 | if (IS_ERR(outmailbox)) { | |
122 | mlx4_free_cmd_mailbox(dev->dev, inmailbox); | |
123 | return PTR_ERR(outmailbox); | |
124 | } | |
125 | ||
126 | memcpy(inbox, in_mad, 256); | |
127 | ||
128 | /* | |
129 | * Key check traps can't be generated unless we have in_wc to | |
130 | * tell us where to send the trap. | |
131 | */ | |
0a9a0188 | 132 | if ((mad_ifc_flags & MLX4_MAD_IFC_IGNORE_MKEY) || !in_wc) |
225c7b1f | 133 | op_modifier |= 0x1; |
0a9a0188 | 134 | if ((mad_ifc_flags & MLX4_MAD_IFC_IGNORE_BKEY) || !in_wc) |
225c7b1f | 135 | op_modifier |= 0x2; |
0a9a0188 JM |
136 | if (mlx4_is_mfunc(dev->dev) && |
137 | (mad_ifc_flags & MLX4_MAD_IFC_NET_VIEW || in_wc)) | |
138 | op_modifier |= 0x8; | |
225c7b1f RD |
139 | |
140 | if (in_wc) { | |
141 | struct { | |
142 | __be32 my_qpn; | |
143 | u32 reserved1; | |
144 | __be32 rqpn; | |
145 | u8 sl; | |
146 | u8 g_path; | |
147 | u16 reserved2[2]; | |
148 | __be16 pkey; | |
149 | u32 reserved3[11]; | |
150 | u8 grh[40]; | |
151 | } *ext_info; | |
152 | ||
153 | memset(inbox + 256, 0, 256); | |
154 | ext_info = inbox + 256; | |
155 | ||
156 | ext_info->my_qpn = cpu_to_be32(in_wc->qp->qp_num); | |
157 | ext_info->rqpn = cpu_to_be32(in_wc->src_qp); | |
158 | ext_info->sl = in_wc->sl << 4; | |
159 | ext_info->g_path = in_wc->dlid_path_bits | | |
160 | (in_wc->wc_flags & IB_WC_GRH ? 0x80 : 0); | |
161 | ext_info->pkey = cpu_to_be16(in_wc->pkey_index); | |
162 | ||
163 | if (in_grh) | |
164 | memcpy(ext_info->grh, in_grh, 40); | |
165 | ||
166 | op_modifier |= 0x4; | |
167 | ||
168 | in_modifier |= in_wc->slid << 16; | |
169 | } | |
170 | ||
0a9a0188 JM |
171 | err = mlx4_cmd_box(dev->dev, inmailbox->dma, outmailbox->dma, in_modifier, |
172 | mlx4_is_master(dev->dev) ? (op_modifier & ~0x8) : op_modifier, | |
f9baff50 | 173 | MLX4_CMD_MAD_IFC, MLX4_CMD_TIME_CLASS_C, |
0a9a0188 | 174 | (op_modifier & 0x8) ? MLX4_CMD_NATIVE : MLX4_CMD_WRAPPED); |
225c7b1f | 175 | |
fe11cb6b | 176 | if (!err) |
225c7b1f RD |
177 | memcpy(response_mad, outmailbox->buf, 256); |
178 | ||
179 | mlx4_free_cmd_mailbox(dev->dev, inmailbox); | |
180 | mlx4_free_cmd_mailbox(dev->dev, outmailbox); | |
181 | ||
182 | return err; | |
183 | } | |
184 | ||
185 | static void update_sm_ah(struct mlx4_ib_dev *dev, u8 port_num, u16 lid, u8 sl) | |
186 | { | |
187 | struct ib_ah *new_ah; | |
188 | struct ib_ah_attr ah_attr; | |
df7fba66 | 189 | unsigned long flags; |
225c7b1f RD |
190 | |
191 | if (!dev->send_agent[port_num - 1][0]) | |
192 | return; | |
193 | ||
194 | memset(&ah_attr, 0, sizeof ah_attr); | |
195 | ah_attr.dlid = lid; | |
196 | ah_attr.sl = sl; | |
197 | ah_attr.port_num = port_num; | |
198 | ||
199 | new_ah = ib_create_ah(dev->send_agent[port_num - 1][0]->qp->pd, | |
200 | &ah_attr); | |
201 | if (IS_ERR(new_ah)) | |
202 | return; | |
203 | ||
df7fba66 | 204 | spin_lock_irqsave(&dev->sm_lock, flags); |
225c7b1f RD |
205 | if (dev->sm_ah[port_num - 1]) |
206 | ib_destroy_ah(dev->sm_ah[port_num - 1]); | |
207 | dev->sm_ah[port_num - 1] = new_ah; | |
df7fba66 | 208 | spin_unlock_irqrestore(&dev->sm_lock, flags); |
225c7b1f RD |
209 | } |
210 | ||
211 | /* | |
00f5ce99 JM |
212 | * Snoop SM MADs for port info, GUID info, and P_Key table sets, so we can |
213 | * synthesize LID change, Client-Rereg, GID change, and P_Key change events. | |
225c7b1f | 214 | */ |
f0f6f346 | 215 | static void smp_snoop(struct ib_device *ibdev, u8 port_num, struct ib_mad *mad, |
00f5ce99 | 216 | u16 prev_lid) |
225c7b1f | 217 | { |
00f5ce99 JM |
218 | struct ib_port_info *pinfo; |
219 | u16 lid; | |
54679e14 JM |
220 | __be16 *base; |
221 | u32 bn, pkey_change_bitmap; | |
222 | int i; | |
223 | ||
225c7b1f | 224 | |
00f5ce99 | 225 | struct mlx4_ib_dev *dev = to_mdev(ibdev); |
225c7b1f RD |
226 | if ((mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_LID_ROUTED || |
227 | mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) && | |
00f5ce99 JM |
228 | mad->mad_hdr.method == IB_MGMT_METHOD_SET) |
229 | switch (mad->mad_hdr.attr_id) { | |
230 | case IB_SMP_ATTR_PORT_INFO: | |
231 | pinfo = (struct ib_port_info *) ((struct ib_smp *) mad)->data; | |
232 | lid = be16_to_cpu(pinfo->lid); | |
225c7b1f | 233 | |
00f5ce99 | 234 | update_sm_ah(dev, port_num, |
225c7b1f RD |
235 | be16_to_cpu(pinfo->sm_lid), |
236 | pinfo->neighbormtu_mastersmsl & 0xf); | |
237 | ||
00f5ce99 | 238 | if (pinfo->clientrereg_resv_subnetto & 0x80) |
b9c5d6a6 | 239 | handle_client_rereg_event(dev, port_num); |
225c7b1f | 240 | |
00f5ce99 | 241 | if (prev_lid != lid) |
2a4fae14 | 242 | handle_lid_change_event(dev, port_num); |
00f5ce99 | 243 | break; |
225c7b1f | 244 | |
00f5ce99 | 245 | case IB_SMP_ATTR_PKEY_TABLE: |
54679e14 JM |
246 | if (!mlx4_is_mfunc(dev->dev)) { |
247 | mlx4_ib_dispatch_event(dev, port_num, | |
248 | IB_EVENT_PKEY_CHANGE); | |
249 | break; | |
250 | } | |
251 | ||
2a4fae14 JM |
252 | /* at this point, we are running in the master. |
253 | * Slaves do not receive SMPs. | |
254 | */ | |
54679e14 JM |
255 | bn = be32_to_cpu(((struct ib_smp *)mad)->attr_mod) & 0xFFFF; |
256 | base = (__be16 *) &(((struct ib_smp *)mad)->data[0]); | |
257 | pkey_change_bitmap = 0; | |
258 | for (i = 0; i < 32; i++) { | |
259 | pr_debug("PKEY[%d] = x%x\n", | |
260 | i + bn*32, be16_to_cpu(base[i])); | |
261 | if (be16_to_cpu(base[i]) != | |
262 | dev->pkeys.phys_pkey_cache[port_num - 1][i + bn*32]) { | |
263 | pkey_change_bitmap |= (1 << i); | |
264 | dev->pkeys.phys_pkey_cache[port_num - 1][i + bn*32] = | |
265 | be16_to_cpu(base[i]); | |
266 | } | |
267 | } | |
268 | pr_debug("PKEY Change event: port=%d, " | |
269 | "block=0x%x, change_bitmap=0x%x\n", | |
270 | port_num, bn, pkey_change_bitmap); | |
271 | ||
2a4fae14 | 272 | if (pkey_change_bitmap) { |
54679e14 JM |
273 | mlx4_ib_dispatch_event(dev, port_num, |
274 | IB_EVENT_PKEY_CHANGE); | |
2a4fae14 JM |
275 | if (!dev->sriov.is_going_down) |
276 | __propagate_pkey_ev(dev, port_num, bn, | |
277 | pkey_change_bitmap); | |
278 | } | |
00f5ce99 | 279 | break; |
225c7b1f | 280 | |
00f5ce99 | 281 | case IB_SMP_ATTR_GUID_INFO: |
6634961c JM |
282 | /* paravirtualized master's guid is guid 0 -- does not change */ |
283 | if (!mlx4_is_master(dev->dev)) | |
284 | mlx4_ib_dispatch_event(dev, port_num, | |
285 | IB_EVENT_GID_CHANGE); | |
2a4fae14 JM |
286 | /*if master, notify relevant slaves*/ |
287 | if (mlx4_is_master(dev->dev) && | |
288 | !dev->sriov.is_going_down) { | |
289 | bn = be32_to_cpu(((struct ib_smp *)mad)->attr_mod); | |
290 | mlx4_ib_update_cache_on_guid_change(dev, bn, port_num, | |
291 | (u8 *)(&((struct ib_smp *)mad)->data)); | |
292 | mlx4_ib_notify_slaves_on_guid_change(dev, bn, port_num, | |
293 | (u8 *)(&((struct ib_smp *)mad)->data)); | |
294 | } | |
00f5ce99 | 295 | break; |
2a4fae14 | 296 | |
00f5ce99 JM |
297 | default: |
298 | break; | |
225c7b1f | 299 | } |
225c7b1f RD |
300 | } |
301 | ||
2a4fae14 JM |
302 | static void __propagate_pkey_ev(struct mlx4_ib_dev *dev, int port_num, |
303 | int block, u32 change_bitmap) | |
304 | { | |
305 | int i, ix, slave, err; | |
306 | int have_event = 0; | |
307 | ||
308 | for (slave = 0; slave < dev->dev->caps.sqp_demux; slave++) { | |
309 | if (slave == mlx4_master_func_num(dev->dev)) | |
310 | continue; | |
311 | if (!mlx4_is_slave_active(dev->dev, slave)) | |
312 | continue; | |
313 | ||
314 | have_event = 0; | |
315 | for (i = 0; i < 32; i++) { | |
316 | if (!(change_bitmap & (1 << i))) | |
317 | continue; | |
318 | for (ix = 0; | |
319 | ix < dev->dev->caps.pkey_table_len[port_num]; ix++) { | |
320 | if (dev->pkeys.virt2phys_pkey[slave][port_num - 1] | |
321 | [ix] == i + 32 * block) { | |
322 | err = mlx4_gen_pkey_eqe(dev->dev, slave, port_num); | |
323 | pr_debug("propagate_pkey_ev: slave %d," | |
324 | " port %d, ix %d (%d)\n", | |
325 | slave, port_num, ix, err); | |
326 | have_event = 1; | |
327 | break; | |
328 | } | |
329 | } | |
330 | if (have_event) | |
331 | break; | |
332 | } | |
333 | } | |
334 | } | |
335 | ||
225c7b1f RD |
336 | static void node_desc_override(struct ib_device *dev, |
337 | struct ib_mad *mad) | |
338 | { | |
df7fba66 JM |
339 | unsigned long flags; |
340 | ||
225c7b1f RD |
341 | if ((mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_LID_ROUTED || |
342 | mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) && | |
343 | mad->mad_hdr.method == IB_MGMT_METHOD_GET_RESP && | |
344 | mad->mad_hdr.attr_id == IB_SMP_ATTR_NODE_DESC) { | |
df7fba66 | 345 | spin_lock_irqsave(&to_mdev(dev)->sm_lock, flags); |
225c7b1f | 346 | memcpy(((struct ib_smp *) mad)->data, dev->node_desc, 64); |
df7fba66 | 347 | spin_unlock_irqrestore(&to_mdev(dev)->sm_lock, flags); |
225c7b1f RD |
348 | } |
349 | } | |
350 | ||
351 | static void forward_trap(struct mlx4_ib_dev *dev, u8 port_num, struct ib_mad *mad) | |
352 | { | |
353 | int qpn = mad->mad_hdr.mgmt_class != IB_MGMT_CLASS_SUBN_LID_ROUTED; | |
354 | struct ib_mad_send_buf *send_buf; | |
355 | struct ib_mad_agent *agent = dev->send_agent[port_num - 1][qpn]; | |
356 | int ret; | |
df7fba66 | 357 | unsigned long flags; |
225c7b1f RD |
358 | |
359 | if (agent) { | |
360 | send_buf = ib_create_send_mad(agent, qpn, 0, 0, IB_MGMT_MAD_HDR, | |
361 | IB_MGMT_MAD_DATA, GFP_ATOMIC); | |
13974909 DC |
362 | if (IS_ERR(send_buf)) |
363 | return; | |
225c7b1f RD |
364 | /* |
365 | * We rely here on the fact that MLX QPs don't use the | |
366 | * address handle after the send is posted (this is | |
367 | * wrong following the IB spec strictly, but we know | |
368 | * it's OK for our devices). | |
369 | */ | |
df7fba66 | 370 | spin_lock_irqsave(&dev->sm_lock, flags); |
225c7b1f RD |
371 | memcpy(send_buf->mad, mad, sizeof *mad); |
372 | if ((send_buf->ah = dev->sm_ah[port_num - 1])) | |
373 | ret = ib_post_send_mad(send_buf, NULL); | |
374 | else | |
375 | ret = -EINVAL; | |
df7fba66 | 376 | spin_unlock_irqrestore(&dev->sm_lock, flags); |
225c7b1f RD |
377 | |
378 | if (ret) | |
379 | ib_free_send_mad(send_buf); | |
380 | } | |
381 | } | |
382 | ||
37bfc7c1 JM |
383 | static int mlx4_ib_demux_sa_handler(struct ib_device *ibdev, int port, int slave, |
384 | struct ib_sa_mad *sa_mad) | |
385 | { | |
b9c5d6a6 OD |
386 | int ret = 0; |
387 | ||
388 | /* dispatch to different sa handlers */ | |
389 | switch (be16_to_cpu(sa_mad->mad_hdr.attr_id)) { | |
390 | case IB_SA_ATTR_MC_MEMBER_REC: | |
391 | ret = mlx4_ib_mcg_demux_handler(ibdev, port, slave, sa_mad); | |
392 | break; | |
393 | default: | |
394 | break; | |
395 | } | |
396 | return ret; | |
37bfc7c1 JM |
397 | } |
398 | ||
399 | int mlx4_ib_find_real_gid(struct ib_device *ibdev, u8 port, __be64 guid) | |
400 | { | |
401 | struct mlx4_ib_dev *dev = to_mdev(ibdev); | |
402 | int i; | |
403 | ||
404 | for (i = 0; i < dev->dev->caps.sqp_demux; i++) { | |
405 | if (dev->sriov.demux[port - 1].guid_cache[i] == guid) | |
406 | return i; | |
407 | } | |
408 | return -1; | |
409 | } | |
410 | ||
411 | ||
2c75d2cc JM |
412 | static int find_slave_port_pkey_ix(struct mlx4_ib_dev *dev, int slave, |
413 | u8 port, u16 pkey, u16 *ix) | |
37bfc7c1 | 414 | { |
2c75d2cc JM |
415 | int i, ret; |
416 | u8 unassigned_pkey_ix, pkey_ix, partial_ix = 0xFF; | |
417 | u16 slot_pkey; | |
37bfc7c1 | 418 | |
2c75d2cc JM |
419 | if (slave == mlx4_master_func_num(dev->dev)) |
420 | return ib_find_cached_pkey(&dev->ib_dev, port, pkey, ix); | |
37bfc7c1 | 421 | |
2c75d2cc | 422 | unassigned_pkey_ix = dev->dev->phys_caps.pkey_phys_table_len[port] - 1; |
37bfc7c1 | 423 | |
2c75d2cc JM |
424 | for (i = 0; i < dev->dev->caps.pkey_table_len[port]; i++) { |
425 | if (dev->pkeys.virt2phys_pkey[slave][port - 1][i] == unassigned_pkey_ix) | |
426 | continue; | |
427 | ||
428 | pkey_ix = dev->pkeys.virt2phys_pkey[slave][port - 1][i]; | |
429 | ||
430 | ret = ib_get_cached_pkey(&dev->ib_dev, port, pkey_ix, &slot_pkey); | |
431 | if (ret) | |
432 | continue; | |
433 | if ((slot_pkey & 0x7FFF) == (pkey & 0x7FFF)) { | |
434 | if (slot_pkey & 0x8000) { | |
435 | *ix = (u16) pkey_ix; | |
436 | return 0; | |
437 | } else { | |
438 | /* take first partial pkey index found */ | |
439 | if (partial_ix == 0xFF) | |
440 | partial_ix = pkey_ix; | |
441 | } | |
442 | } | |
443 | } | |
444 | ||
445 | if (partial_ix < 0xFF) { | |
446 | *ix = (u16) partial_ix; | |
447 | return 0; | |
448 | } | |
449 | ||
450 | return -EINVAL; | |
37bfc7c1 JM |
451 | } |
452 | ||
453 | int mlx4_ib_send_to_slave(struct mlx4_ib_dev *dev, int slave, u8 port, | |
454 | enum ib_qp_type dest_qpt, struct ib_wc *wc, | |
455 | struct ib_grh *grh, struct ib_mad *mad) | |
456 | { | |
457 | struct ib_sge list; | |
458 | struct ib_send_wr wr, *bad_wr; | |
459 | struct mlx4_ib_demux_pv_ctx *tun_ctx; | |
460 | struct mlx4_ib_demux_pv_qp *tun_qp; | |
461 | struct mlx4_rcv_tunnel_mad *tun_mad; | |
462 | struct ib_ah_attr attr; | |
463 | struct ib_ah *ah; | |
464 | struct ib_qp *src_qp = NULL; | |
465 | unsigned tun_tx_ix = 0; | |
466 | int dqpn; | |
467 | int ret = 0; | |
37bfc7c1 | 468 | u16 tun_pkey_ix; |
2c75d2cc | 469 | u16 cached_pkey; |
6ee51a4e | 470 | u8 is_eth = dev->dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH; |
37bfc7c1 JM |
471 | |
472 | if (dest_qpt > IB_QPT_GSI) | |
473 | return -EINVAL; | |
474 | ||
475 | tun_ctx = dev->sriov.demux[port-1].tun[slave]; | |
476 | ||
477 | /* check if proxy qp created */ | |
478 | if (!tun_ctx || tun_ctx->state != DEMUX_PV_STATE_ACTIVE) | |
479 | return -EAGAIN; | |
480 | ||
37bfc7c1 JM |
481 | if (!dest_qpt) |
482 | tun_qp = &tun_ctx->qp[0]; | |
483 | else | |
484 | tun_qp = &tun_ctx->qp[1]; | |
485 | ||
2c75d2cc | 486 | /* compute P_Key index to put in tunnel header for slave */ |
37bfc7c1 | 487 | if (dest_qpt) { |
2c75d2cc JM |
488 | u16 pkey_ix; |
489 | ret = ib_get_cached_pkey(&dev->ib_dev, port, wc->pkey_index, &cached_pkey); | |
37bfc7c1 JM |
490 | if (ret) |
491 | return -EINVAL; | |
492 | ||
2c75d2cc JM |
493 | ret = find_slave_port_pkey_ix(dev, slave, port, cached_pkey, &pkey_ix); |
494 | if (ret) | |
37bfc7c1 | 495 | return -EINVAL; |
2c75d2cc | 496 | tun_pkey_ix = pkey_ix; |
37bfc7c1 JM |
497 | } else |
498 | tun_pkey_ix = dev->pkeys.virt2phys_pkey[slave][port - 1][0]; | |
499 | ||
47605df9 | 500 | dqpn = dev->dev->phys_caps.base_proxy_sqpn + 8 * slave + port + (dest_qpt * 2) - 1; |
37bfc7c1 JM |
501 | |
502 | /* get tunnel tx data buf for slave */ | |
503 | src_qp = tun_qp->qp; | |
504 | ||
505 | /* create ah. Just need an empty one with the port num for the post send. | |
506 | * The driver will set the force loopback bit in post_send */ | |
507 | memset(&attr, 0, sizeof attr); | |
508 | attr.port_num = port; | |
6ee51a4e | 509 | if (is_eth) { |
b6ffaeff | 510 | memcpy(&attr.grh.dgid.raw[0], &grh->dgid.raw[0], 16); |
6ee51a4e JM |
511 | attr.ah_flags = IB_AH_GRH; |
512 | } | |
37bfc7c1 JM |
513 | ah = ib_create_ah(tun_ctx->pd, &attr); |
514 | if (IS_ERR(ah)) | |
515 | return -ENOMEM; | |
516 | ||
517 | /* allocate tunnel tx buf after pass failure returns */ | |
518 | spin_lock(&tun_qp->tx_lock); | |
519 | if (tun_qp->tx_ix_head - tun_qp->tx_ix_tail >= | |
520 | (MLX4_NUM_TUNNEL_BUFS - 1)) | |
521 | ret = -EAGAIN; | |
522 | else | |
523 | tun_tx_ix = (++tun_qp->tx_ix_head) & (MLX4_NUM_TUNNEL_BUFS - 1); | |
524 | spin_unlock(&tun_qp->tx_lock); | |
525 | if (ret) | |
526 | goto out; | |
527 | ||
528 | tun_mad = (struct mlx4_rcv_tunnel_mad *) (tun_qp->tx_ring[tun_tx_ix].buf.addr); | |
529 | if (tun_qp->tx_ring[tun_tx_ix].ah) | |
530 | ib_destroy_ah(tun_qp->tx_ring[tun_tx_ix].ah); | |
531 | tun_qp->tx_ring[tun_tx_ix].ah = ah; | |
532 | ib_dma_sync_single_for_cpu(&dev->ib_dev, | |
533 | tun_qp->tx_ring[tun_tx_ix].buf.map, | |
534 | sizeof (struct mlx4_rcv_tunnel_mad), | |
535 | DMA_TO_DEVICE); | |
536 | ||
537 | /* copy over to tunnel buffer */ | |
538 | if (grh) | |
539 | memcpy(&tun_mad->grh, grh, sizeof *grh); | |
540 | memcpy(&tun_mad->mad, mad, sizeof *mad); | |
541 | ||
542 | /* adjust tunnel data */ | |
543 | tun_mad->hdr.pkey_index = cpu_to_be16(tun_pkey_ix); | |
37bfc7c1 JM |
544 | tun_mad->hdr.flags_src_qp = cpu_to_be32(wc->src_qp & 0xFFFFFF); |
545 | tun_mad->hdr.g_ml_path = (grh && (wc->wc_flags & IB_WC_GRH)) ? 0x80 : 0; | |
546 | ||
5ea8bbfc JM |
547 | if (is_eth) { |
548 | u16 vlan = 0; | |
549 | if (mlx4_get_slave_default_vlan(dev->dev, port, slave, &vlan, | |
550 | NULL)) { | |
551 | /* VST mode */ | |
552 | if (vlan != wc->vlan_id) | |
553 | /* Packet vlan is not the VST-assigned vlan. | |
554 | * Drop the packet. | |
555 | */ | |
556 | goto out; | |
557 | else | |
558 | /* Remove the vlan tag before forwarding | |
559 | * the packet to the VF. | |
560 | */ | |
561 | vlan = 0xffff; | |
562 | } else { | |
563 | vlan = wc->vlan_id; | |
564 | } | |
565 | ||
566 | tun_mad->hdr.sl_vid = cpu_to_be16(vlan); | |
567 | memcpy((char *)&tun_mad->hdr.mac_31_0, &(wc->smac[0]), 4); | |
568 | memcpy((char *)&tun_mad->hdr.slid_mac_47_32, &(wc->smac[4]), 2); | |
569 | } else { | |
570 | tun_mad->hdr.sl_vid = cpu_to_be16(((u16)(wc->sl)) << 12); | |
571 | tun_mad->hdr.slid_mac_47_32 = cpu_to_be16(wc->slid); | |
572 | } | |
573 | ||
37bfc7c1 JM |
574 | ib_dma_sync_single_for_device(&dev->ib_dev, |
575 | tun_qp->tx_ring[tun_tx_ix].buf.map, | |
576 | sizeof (struct mlx4_rcv_tunnel_mad), | |
577 | DMA_TO_DEVICE); | |
578 | ||
579 | list.addr = tun_qp->tx_ring[tun_tx_ix].buf.map; | |
580 | list.length = sizeof (struct mlx4_rcv_tunnel_mad); | |
581 | list.lkey = tun_ctx->mr->lkey; | |
582 | ||
583 | wr.wr.ud.ah = ah; | |
584 | wr.wr.ud.port_num = port; | |
585 | wr.wr.ud.remote_qkey = IB_QP_SET_QKEY; | |
586 | wr.wr.ud.remote_qpn = dqpn; | |
587 | wr.next = NULL; | |
588 | wr.wr_id = ((u64) tun_tx_ix) | MLX4_TUN_SET_WRID_QPN(dest_qpt); | |
589 | wr.sg_list = &list; | |
590 | wr.num_sge = 1; | |
591 | wr.opcode = IB_WR_SEND; | |
592 | wr.send_flags = IB_SEND_SIGNALED; | |
593 | ||
594 | ret = ib_post_send(src_qp, &wr, &bad_wr); | |
595 | out: | |
596 | if (ret) | |
597 | ib_destroy_ah(ah); | |
598 | return ret; | |
599 | } | |
600 | ||
601 | static int mlx4_ib_demux_mad(struct ib_device *ibdev, u8 port, | |
602 | struct ib_wc *wc, struct ib_grh *grh, | |
603 | struct ib_mad *mad) | |
604 | { | |
605 | struct mlx4_ib_dev *dev = to_mdev(ibdev); | |
606 | int err; | |
607 | int slave; | |
608 | u8 *slave_id; | |
6ee51a4e JM |
609 | int is_eth = 0; |
610 | ||
611 | if (rdma_port_get_link_layer(ibdev, port) == IB_LINK_LAYER_INFINIBAND) | |
612 | is_eth = 0; | |
613 | else | |
614 | is_eth = 1; | |
615 | ||
616 | if (is_eth) { | |
617 | if (!(wc->wc_flags & IB_WC_GRH)) { | |
618 | mlx4_ib_warn(ibdev, "RoCE grh not present.\n"); | |
619 | return -EINVAL; | |
620 | } | |
621 | if (mad->mad_hdr.mgmt_class != IB_MGMT_CLASS_CM) { | |
622 | mlx4_ib_warn(ibdev, "RoCE mgmt class is not CM\n"); | |
623 | return -EINVAL; | |
624 | } | |
625 | if (mlx4_get_slave_from_roce_gid(dev->dev, port, grh->dgid.raw, &slave)) { | |
626 | mlx4_ib_warn(ibdev, "failed matching grh\n"); | |
627 | return -ENOENT; | |
628 | } | |
629 | if (slave >= dev->dev->caps.sqp_demux) { | |
630 | mlx4_ib_warn(ibdev, "slave id: %d is bigger than allowed:%d\n", | |
631 | slave, dev->dev->caps.sqp_demux); | |
632 | return -ENOENT; | |
633 | } | |
634 | ||
635 | if (mlx4_ib_demux_cm_handler(ibdev, port, NULL, mad)) | |
636 | return 0; | |
637 | ||
638 | err = mlx4_ib_send_to_slave(dev, slave, port, wc->qp->qp_type, wc, grh, mad); | |
639 | if (err) | |
640 | pr_debug("failed sending to slave %d via tunnel qp (%d)\n", | |
641 | slave, err); | |
642 | return 0; | |
643 | } | |
37bfc7c1 JM |
644 | |
645 | /* Initially assume that this mad is for us */ | |
646 | slave = mlx4_master_func_num(dev->dev); | |
647 | ||
648 | /* See if the slave id is encoded in a response mad */ | |
649 | if (mad->mad_hdr.method & 0x80) { | |
650 | slave_id = (u8 *) &mad->mad_hdr.tid; | |
651 | slave = *slave_id; | |
652 | if (slave != 255) /*255 indicates the dom0*/ | |
653 | *slave_id = 0; /* remap tid */ | |
654 | } | |
655 | ||
656 | /* If a grh is present, we demux according to it */ | |
657 | if (wc->wc_flags & IB_WC_GRH) { | |
658 | slave = mlx4_ib_find_real_gid(ibdev, port, grh->dgid.global.interface_id); | |
659 | if (slave < 0) { | |
660 | mlx4_ib_warn(ibdev, "failed matching grh\n"); | |
661 | return -ENOENT; | |
662 | } | |
663 | } | |
664 | /* Class-specific handling */ | |
665 | switch (mad->mad_hdr.mgmt_class) { | |
97982f5a JM |
666 | case IB_MGMT_CLASS_SUBN_LID_ROUTED: |
667 | case IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE: | |
668 | /* 255 indicates the dom0 */ | |
669 | if (slave != 255 && slave != mlx4_master_func_num(dev->dev)) { | |
670 | if (!mlx4_vf_smi_enabled(dev->dev, slave, port)) | |
671 | return -EPERM; | |
672 | /* for a VF. drop unsolicited MADs */ | |
673 | if (!(mad->mad_hdr.method & IB_MGMT_METHOD_RESP)) { | |
674 | mlx4_ib_warn(ibdev, "demux QP0. rejecting unsolicited mad for slave %d class 0x%x, method 0x%x\n", | |
675 | slave, mad->mad_hdr.mgmt_class, | |
676 | mad->mad_hdr.method); | |
677 | return -EINVAL; | |
678 | } | |
679 | } | |
680 | break; | |
37bfc7c1 JM |
681 | case IB_MGMT_CLASS_SUBN_ADM: |
682 | if (mlx4_ib_demux_sa_handler(ibdev, port, slave, | |
683 | (struct ib_sa_mad *) mad)) | |
684 | return 0; | |
685 | break; | |
3cf69cc8 AV |
686 | case IB_MGMT_CLASS_CM: |
687 | if (mlx4_ib_demux_cm_handler(ibdev, port, &slave, mad)) | |
688 | return 0; | |
689 | break; | |
37bfc7c1 JM |
690 | case IB_MGMT_CLASS_DEVICE_MGMT: |
691 | if (mad->mad_hdr.method != IB_MGMT_METHOD_GET_RESP) | |
692 | return 0; | |
693 | break; | |
694 | default: | |
695 | /* Drop unsupported classes for slaves in tunnel mode */ | |
696 | if (slave != mlx4_master_func_num(dev->dev)) { | |
697 | pr_debug("dropping unsupported ingress mad from class:%d " | |
698 | "for slave:%d\n", mad->mad_hdr.mgmt_class, slave); | |
699 | return 0; | |
700 | } | |
701 | } | |
702 | /*make sure that no slave==255 was not handled yet.*/ | |
703 | if (slave >= dev->dev->caps.sqp_demux) { | |
704 | mlx4_ib_warn(ibdev, "slave id: %d is bigger than allowed:%d\n", | |
705 | slave, dev->dev->caps.sqp_demux); | |
706 | return -ENOENT; | |
707 | } | |
708 | ||
709 | err = mlx4_ib_send_to_slave(dev, slave, port, wc->qp->qp_type, wc, grh, mad); | |
710 | if (err) | |
711 | pr_debug("failed sending to slave %d via tunnel qp (%d)\n", | |
712 | slave, err); | |
713 | return 0; | |
714 | } | |
715 | ||
c3779134 | 716 | static int ib_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num, |
225c7b1f RD |
717 | struct ib_wc *in_wc, struct ib_grh *in_grh, |
718 | struct ib_mad *in_mad, struct ib_mad *out_mad) | |
719 | { | |
f0f6f346 | 720 | u16 slid, prev_lid = 0; |
225c7b1f | 721 | int err; |
f0f6f346 | 722 | struct ib_port_attr pattr; |
225c7b1f | 723 | |
b1d8eb5a JM |
724 | if (in_wc && in_wc->qp->qp_num) { |
725 | pr_debug("received MAD: slid:%d sqpn:%d " | |
726 | "dlid_bits:%d dqpn:%d wc_flags:0x%x, cls %x, mtd %x, atr %x\n", | |
727 | in_wc->slid, in_wc->src_qp, | |
728 | in_wc->dlid_path_bits, | |
729 | in_wc->qp->qp_num, | |
730 | in_wc->wc_flags, | |
731 | in_mad->mad_hdr.mgmt_class, in_mad->mad_hdr.method, | |
732 | be16_to_cpu(in_mad->mad_hdr.attr_id)); | |
733 | if (in_wc->wc_flags & IB_WC_GRH) { | |
734 | pr_debug("sgid_hi:0x%016llx sgid_lo:0x%016llx\n", | |
735 | be64_to_cpu(in_grh->sgid.global.subnet_prefix), | |
736 | be64_to_cpu(in_grh->sgid.global.interface_id)); | |
737 | pr_debug("dgid_hi:0x%016llx dgid_lo:0x%016llx\n", | |
738 | be64_to_cpu(in_grh->dgid.global.subnet_prefix), | |
739 | be64_to_cpu(in_grh->dgid.global.interface_id)); | |
740 | } | |
741 | } | |
742 | ||
225c7b1f RD |
743 | slid = in_wc ? in_wc->slid : be16_to_cpu(IB_LID_PERMISSIVE); |
744 | ||
745 | if (in_mad->mad_hdr.method == IB_MGMT_METHOD_TRAP && slid == 0) { | |
746 | forward_trap(to_mdev(ibdev), port_num, in_mad); | |
747 | return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED; | |
748 | } | |
749 | ||
750 | if (in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_LID_ROUTED || | |
751 | in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) { | |
752 | if (in_mad->mad_hdr.method != IB_MGMT_METHOD_GET && | |
753 | in_mad->mad_hdr.method != IB_MGMT_METHOD_SET && | |
754 | in_mad->mad_hdr.method != IB_MGMT_METHOD_TRAP_REPRESS) | |
755 | return IB_MAD_RESULT_SUCCESS; | |
756 | ||
757 | /* | |
a6f7feae | 758 | * Don't process SMInfo queries -- the SMA can't handle them. |
225c7b1f | 759 | */ |
a6f7feae | 760 | if (in_mad->mad_hdr.attr_id == IB_SMP_ATTR_SM_INFO) |
225c7b1f RD |
761 | return IB_MAD_RESULT_SUCCESS; |
762 | } else if (in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_PERF_MGMT || | |
763 | in_mad->mad_hdr.mgmt_class == MLX4_IB_VENDOR_CLASS1 || | |
6578cf33 EC |
764 | in_mad->mad_hdr.mgmt_class == MLX4_IB_VENDOR_CLASS2 || |
765 | in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_CONG_MGMT) { | |
225c7b1f RD |
766 | if (in_mad->mad_hdr.method != IB_MGMT_METHOD_GET && |
767 | in_mad->mad_hdr.method != IB_MGMT_METHOD_SET) | |
768 | return IB_MAD_RESULT_SUCCESS; | |
769 | } else | |
770 | return IB_MAD_RESULT_SUCCESS; | |
771 | ||
f0f6f346 MS |
772 | if ((in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_LID_ROUTED || |
773 | in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) && | |
774 | in_mad->mad_hdr.method == IB_MGMT_METHOD_SET && | |
775 | in_mad->mad_hdr.attr_id == IB_SMP_ATTR_PORT_INFO && | |
776 | !ib_query_port(ibdev, port_num, &pattr)) | |
777 | prev_lid = pattr.lid; | |
778 | ||
225c7b1f | 779 | err = mlx4_MAD_IFC(to_mdev(ibdev), |
0a9a0188 JM |
780 | (mad_flags & IB_MAD_IGNORE_MKEY ? MLX4_MAD_IFC_IGNORE_MKEY : 0) | |
781 | (mad_flags & IB_MAD_IGNORE_BKEY ? MLX4_MAD_IFC_IGNORE_BKEY : 0) | | |
782 | MLX4_MAD_IFC_NET_VIEW, | |
225c7b1f RD |
783 | port_num, in_wc, in_grh, in_mad, out_mad); |
784 | if (err) | |
785 | return IB_MAD_RESULT_FAILURE; | |
786 | ||
787 | if (!out_mad->mad_hdr.status) { | |
00f5ce99 JM |
788 | if (!(to_mdev(ibdev)->dev->caps.flags & MLX4_DEV_CAP_FLAG_PORT_MNG_CHG_EV)) |
789 | smp_snoop(ibdev, port_num, in_mad, prev_lid); | |
992e8e6e JM |
790 | /* slaves get node desc from FW */ |
791 | if (!mlx4_is_slave(to_mdev(ibdev)->dev)) | |
792 | node_desc_override(ibdev, out_mad); | |
225c7b1f RD |
793 | } |
794 | ||
795 | /* set return bit in status of directed route responses */ | |
796 | if (in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) | |
797 | out_mad->mad_hdr.status |= cpu_to_be16(1 << 15); | |
798 | ||
799 | if (in_mad->mad_hdr.method == IB_MGMT_METHOD_TRAP_REPRESS) | |
800 | /* no response for trap repress */ | |
801 | return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED; | |
802 | ||
803 | return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY; | |
804 | } | |
805 | ||
c3779134 OG |
806 | static void edit_counter(struct mlx4_counter *cnt, |
807 | struct ib_pma_portcounters *pma_cnt) | |
808 | { | |
809 | pma_cnt->port_xmit_data = cpu_to_be32((be64_to_cpu(cnt->tx_bytes)>>2)); | |
810 | pma_cnt->port_rcv_data = cpu_to_be32((be64_to_cpu(cnt->rx_bytes)>>2)); | |
811 | pma_cnt->port_xmit_packets = cpu_to_be32(be64_to_cpu(cnt->tx_frames)); | |
812 | pma_cnt->port_rcv_packets = cpu_to_be32(be64_to_cpu(cnt->rx_frames)); | |
813 | } | |
814 | ||
815 | static int iboe_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num, | |
816 | struct ib_wc *in_wc, struct ib_grh *in_grh, | |
817 | struct ib_mad *in_mad, struct ib_mad *out_mad) | |
818 | { | |
819 | struct mlx4_cmd_mailbox *mailbox; | |
820 | struct mlx4_ib_dev *dev = to_mdev(ibdev); | |
821 | int err; | |
822 | u32 inmod = dev->counters[port_num - 1] & 0xffff; | |
823 | u8 mode; | |
824 | ||
825 | if (in_mad->mad_hdr.mgmt_class != IB_MGMT_CLASS_PERF_MGMT) | |
826 | return -EINVAL; | |
827 | ||
828 | mailbox = mlx4_alloc_cmd_mailbox(dev->dev); | |
829 | if (IS_ERR(mailbox)) | |
830 | return IB_MAD_RESULT_FAILURE; | |
831 | ||
832 | err = mlx4_cmd_box(dev->dev, 0, mailbox->dma, inmod, 0, | |
f9baff50 JM |
833 | MLX4_CMD_QUERY_IF_STAT, MLX4_CMD_TIME_CLASS_C, |
834 | MLX4_CMD_WRAPPED); | |
c3779134 OG |
835 | if (err) |
836 | err = IB_MAD_RESULT_FAILURE; | |
837 | else { | |
838 | memset(out_mad->data, 0, sizeof out_mad->data); | |
839 | mode = ((struct mlx4_counter *)mailbox->buf)->counter_mode; | |
840 | switch (mode & 0xf) { | |
841 | case 0: | |
842 | edit_counter(mailbox->buf, | |
843 | (void *)(out_mad->data + 40)); | |
844 | err = IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY; | |
845 | break; | |
846 | default: | |
847 | err = IB_MAD_RESULT_FAILURE; | |
848 | } | |
849 | } | |
850 | ||
851 | mlx4_free_cmd_mailbox(dev->dev, mailbox); | |
852 | ||
853 | return err; | |
854 | } | |
855 | ||
856 | int mlx4_ib_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num, | |
857 | struct ib_wc *in_wc, struct ib_grh *in_grh, | |
858 | struct ib_mad *in_mad, struct ib_mad *out_mad) | |
859 | { | |
860 | switch (rdma_port_get_link_layer(ibdev, port_num)) { | |
861 | case IB_LINK_LAYER_INFINIBAND: | |
862 | return ib_process_mad(ibdev, mad_flags, port_num, in_wc, | |
863 | in_grh, in_mad, out_mad); | |
864 | case IB_LINK_LAYER_ETHERNET: | |
865 | return iboe_process_mad(ibdev, mad_flags, port_num, in_wc, | |
866 | in_grh, in_mad, out_mad); | |
867 | default: | |
868 | return -EINVAL; | |
869 | } | |
870 | } | |
871 | ||
225c7b1f RD |
872 | static void send_handler(struct ib_mad_agent *agent, |
873 | struct ib_mad_send_wc *mad_send_wc) | |
874 | { | |
992e8e6e JM |
875 | if (mad_send_wc->send_buf->context[0]) |
876 | ib_destroy_ah(mad_send_wc->send_buf->context[0]); | |
225c7b1f RD |
877 | ib_free_send_mad(mad_send_wc->send_buf); |
878 | } | |
879 | ||
880 | int mlx4_ib_mad_init(struct mlx4_ib_dev *dev) | |
881 | { | |
882 | struct ib_mad_agent *agent; | |
883 | int p, q; | |
884 | int ret; | |
fa417f7b | 885 | enum rdma_link_layer ll; |
225c7b1f | 886 | |
fa417f7b EC |
887 | for (p = 0; p < dev->num_ports; ++p) { |
888 | ll = rdma_port_get_link_layer(&dev->ib_dev, p + 1); | |
225c7b1f | 889 | for (q = 0; q <= 1; ++q) { |
fa417f7b EC |
890 | if (ll == IB_LINK_LAYER_INFINIBAND) { |
891 | agent = ib_register_mad_agent(&dev->ib_dev, p + 1, | |
892 | q ? IB_QPT_GSI : IB_QPT_SMI, | |
893 | NULL, 0, send_handler, | |
0f29b46d | 894 | NULL, NULL, 0); |
fa417f7b EC |
895 | if (IS_ERR(agent)) { |
896 | ret = PTR_ERR(agent); | |
897 | goto err; | |
898 | } | |
899 | dev->send_agent[p][q] = agent; | |
900 | } else | |
901 | dev->send_agent[p][q] = NULL; | |
225c7b1f | 902 | } |
fa417f7b | 903 | } |
225c7b1f RD |
904 | |
905 | return 0; | |
906 | ||
907 | err: | |
7ff93f8b | 908 | for (p = 0; p < dev->num_ports; ++p) |
225c7b1f RD |
909 | for (q = 0; q <= 1; ++q) |
910 | if (dev->send_agent[p][q]) | |
911 | ib_unregister_mad_agent(dev->send_agent[p][q]); | |
912 | ||
913 | return ret; | |
914 | } | |
915 | ||
916 | void mlx4_ib_mad_cleanup(struct mlx4_ib_dev *dev) | |
917 | { | |
918 | struct ib_mad_agent *agent; | |
919 | int p, q; | |
920 | ||
7ff93f8b | 921 | for (p = 0; p < dev->num_ports; ++p) { |
225c7b1f RD |
922 | for (q = 0; q <= 1; ++q) { |
923 | agent = dev->send_agent[p][q]; | |
fa417f7b EC |
924 | if (agent) { |
925 | dev->send_agent[p][q] = NULL; | |
926 | ib_unregister_mad_agent(agent); | |
927 | } | |
225c7b1f RD |
928 | } |
929 | ||
930 | if (dev->sm_ah[p]) | |
931 | ib_destroy_ah(dev->sm_ah[p]); | |
932 | } | |
933 | } | |
00f5ce99 | 934 | |
2a4fae14 JM |
935 | static void handle_lid_change_event(struct mlx4_ib_dev *dev, u8 port_num) |
936 | { | |
937 | mlx4_ib_dispatch_event(dev, port_num, IB_EVENT_LID_CHANGE); | |
938 | ||
939 | if (mlx4_is_master(dev->dev) && !dev->sriov.is_going_down) | |
940 | mlx4_gen_slaves_port_mgt_ev(dev->dev, port_num, | |
941 | MLX4_EQ_PORT_INFO_LID_CHANGE_MASK); | |
942 | } | |
943 | ||
b9c5d6a6 OD |
944 | static void handle_client_rereg_event(struct mlx4_ib_dev *dev, u8 port_num) |
945 | { | |
a0c64a17 | 946 | /* re-configure the alias-guid and mcg's */ |
b9c5d6a6 | 947 | if (mlx4_is_master(dev->dev)) { |
a0c64a17 JM |
948 | mlx4_ib_invalidate_all_guid_record(dev, port_num); |
949 | ||
2a4fae14 | 950 | if (!dev->sriov.is_going_down) { |
b9c5d6a6 | 951 | mlx4_ib_mcg_port_cleanup(&dev->sriov.demux[port_num - 1], 0); |
2a4fae14 JM |
952 | mlx4_gen_slaves_port_mgt_ev(dev->dev, port_num, |
953 | MLX4_EQ_PORT_INFO_CLIENT_REREG_MASK); | |
954 | } | |
b9c5d6a6 OD |
955 | } |
956 | mlx4_ib_dispatch_event(dev, port_num, IB_EVENT_CLIENT_REREGISTER); | |
957 | } | |
958 | ||
2a4fae14 JM |
959 | static void propagate_pkey_ev(struct mlx4_ib_dev *dev, int port_num, |
960 | struct mlx4_eqe *eqe) | |
961 | { | |
962 | __propagate_pkey_ev(dev, port_num, GET_BLK_PTR_FROM_EQE(eqe), | |
963 | GET_MASK_FROM_EQE(eqe)); | |
964 | } | |
965 | ||
966 | static void handle_slaves_guid_change(struct mlx4_ib_dev *dev, u8 port_num, | |
967 | u32 guid_tbl_blk_num, u32 change_bitmap) | |
968 | { | |
969 | struct ib_smp *in_mad = NULL; | |
970 | struct ib_smp *out_mad = NULL; | |
971 | u16 i; | |
972 | ||
973 | if (!mlx4_is_mfunc(dev->dev) || !mlx4_is_master(dev->dev)) | |
974 | return; | |
975 | ||
976 | in_mad = kmalloc(sizeof *in_mad, GFP_KERNEL); | |
977 | out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); | |
978 | if (!in_mad || !out_mad) { | |
979 | mlx4_ib_warn(&dev->ib_dev, "failed to allocate memory for guid info mads\n"); | |
980 | goto out; | |
981 | } | |
982 | ||
983 | guid_tbl_blk_num *= 4; | |
984 | ||
985 | for (i = 0; i < 4; i++) { | |
986 | if (change_bitmap && (!((change_bitmap >> (8 * i)) & 0xff))) | |
987 | continue; | |
988 | memset(in_mad, 0, sizeof *in_mad); | |
989 | memset(out_mad, 0, sizeof *out_mad); | |
990 | ||
991 | in_mad->base_version = 1; | |
992 | in_mad->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED; | |
993 | in_mad->class_version = 1; | |
994 | in_mad->method = IB_MGMT_METHOD_GET; | |
995 | in_mad->attr_id = IB_SMP_ATTR_GUID_INFO; | |
996 | in_mad->attr_mod = cpu_to_be32(guid_tbl_blk_num + i); | |
997 | ||
998 | if (mlx4_MAD_IFC(dev, | |
999 | MLX4_MAD_IFC_IGNORE_KEYS | MLX4_MAD_IFC_NET_VIEW, | |
1000 | port_num, NULL, NULL, in_mad, out_mad)) { | |
1001 | mlx4_ib_warn(&dev->ib_dev, "Failed in get GUID INFO MAD_IFC\n"); | |
1002 | goto out; | |
1003 | } | |
1004 | ||
1005 | mlx4_ib_update_cache_on_guid_change(dev, guid_tbl_blk_num + i, | |
1006 | port_num, | |
1007 | (u8 *)(&((struct ib_smp *)out_mad)->data)); | |
1008 | mlx4_ib_notify_slaves_on_guid_change(dev, guid_tbl_blk_num + i, | |
1009 | port_num, | |
1010 | (u8 *)(&((struct ib_smp *)out_mad)->data)); | |
1011 | } | |
1012 | ||
1013 | out: | |
1014 | kfree(in_mad); | |
1015 | kfree(out_mad); | |
1016 | return; | |
1017 | } | |
1018 | ||
00f5ce99 JM |
1019 | void handle_port_mgmt_change_event(struct work_struct *work) |
1020 | { | |
1021 | struct ib_event_work *ew = container_of(work, struct ib_event_work, work); | |
1022 | struct mlx4_ib_dev *dev = ew->ib_dev; | |
1023 | struct mlx4_eqe *eqe = &(ew->ib_eqe); | |
1024 | u8 port = eqe->event.port_mgmt_change.port; | |
1025 | u32 changed_attr; | |
2a4fae14 JM |
1026 | u32 tbl_block; |
1027 | u32 change_bitmap; | |
00f5ce99 JM |
1028 | |
1029 | switch (eqe->subtype) { | |
1030 | case MLX4_DEV_PMC_SUBTYPE_PORT_INFO: | |
1031 | changed_attr = be32_to_cpu(eqe->event.port_mgmt_change.params.port_info.changed_attr); | |
1032 | ||
1033 | /* Update the SM ah - This should be done before handling | |
1034 | the other changed attributes so that MADs can be sent to the SM */ | |
1035 | if (changed_attr & MSTR_SM_CHANGE_MASK) { | |
1036 | u16 lid = be16_to_cpu(eqe->event.port_mgmt_change.params.port_info.mstr_sm_lid); | |
1037 | u8 sl = eqe->event.port_mgmt_change.params.port_info.mstr_sm_sl & 0xf; | |
1038 | update_sm_ah(dev, port, lid, sl); | |
1039 | } | |
1040 | ||
1041 | /* Check if it is a lid change event */ | |
1042 | if (changed_attr & MLX4_EQ_PORT_INFO_LID_CHANGE_MASK) | |
2a4fae14 | 1043 | handle_lid_change_event(dev, port); |
00f5ce99 JM |
1044 | |
1045 | /* Generate GUID changed event */ | |
2a4fae14 | 1046 | if (changed_attr & MLX4_EQ_PORT_INFO_GID_PFX_CHANGE_MASK) { |
00f5ce99 | 1047 | mlx4_ib_dispatch_event(dev, port, IB_EVENT_GID_CHANGE); |
2a4fae14 JM |
1048 | /*if master, notify all slaves*/ |
1049 | if (mlx4_is_master(dev->dev)) | |
1050 | mlx4_gen_slaves_port_mgt_ev(dev->dev, port, | |
1051 | MLX4_EQ_PORT_INFO_GID_PFX_CHANGE_MASK); | |
1052 | } | |
00f5ce99 JM |
1053 | |
1054 | if (changed_attr & MLX4_EQ_PORT_INFO_CLIENT_REREG_MASK) | |
b9c5d6a6 | 1055 | handle_client_rereg_event(dev, port); |
00f5ce99 JM |
1056 | break; |
1057 | ||
1058 | case MLX4_DEV_PMC_SUBTYPE_PKEY_TABLE: | |
1059 | mlx4_ib_dispatch_event(dev, port, IB_EVENT_PKEY_CHANGE); | |
2a4fae14 JM |
1060 | if (mlx4_is_master(dev->dev) && !dev->sriov.is_going_down) |
1061 | propagate_pkey_ev(dev, port, eqe); | |
00f5ce99 JM |
1062 | break; |
1063 | case MLX4_DEV_PMC_SUBTYPE_GUID_INFO: | |
6634961c JM |
1064 | /* paravirtualized master's guid is guid 0 -- does not change */ |
1065 | if (!mlx4_is_master(dev->dev)) | |
1066 | mlx4_ib_dispatch_event(dev, port, IB_EVENT_GID_CHANGE); | |
2a4fae14 JM |
1067 | /*if master, notify relevant slaves*/ |
1068 | else if (!dev->sriov.is_going_down) { | |
1069 | tbl_block = GET_BLK_PTR_FROM_EQE(eqe); | |
1070 | change_bitmap = GET_MASK_FROM_EQE(eqe); | |
1071 | handle_slaves_guid_change(dev, port, tbl_block, change_bitmap); | |
1072 | } | |
00f5ce99 JM |
1073 | break; |
1074 | default: | |
1075 | pr_warn("Unsupported subtype 0x%x for " | |
1076 | "Port Management Change event\n", eqe->subtype); | |
1077 | } | |
1078 | ||
1079 | kfree(ew); | |
1080 | } | |
1081 | ||
1082 | void mlx4_ib_dispatch_event(struct mlx4_ib_dev *dev, u8 port_num, | |
1083 | enum ib_event_type type) | |
1084 | { | |
1085 | struct ib_event event; | |
1086 | ||
1087 | event.device = &dev->ib_dev; | |
1088 | event.element.port_num = port_num; | |
1089 | event.event = type; | |
1090 | ||
1091 | ib_dispatch_event(&event); | |
1092 | } | |
fc06573d JM |
1093 | |
1094 | static void mlx4_ib_tunnel_comp_handler(struct ib_cq *cq, void *arg) | |
1095 | { | |
1096 | unsigned long flags; | |
1097 | struct mlx4_ib_demux_pv_ctx *ctx = cq->cq_context; | |
1098 | struct mlx4_ib_dev *dev = to_mdev(ctx->ib_dev); | |
1099 | spin_lock_irqsave(&dev->sriov.going_down_lock, flags); | |
1100 | if (!dev->sriov.is_going_down && ctx->state == DEMUX_PV_STATE_ACTIVE) | |
1101 | queue_work(ctx->wq, &ctx->work); | |
1102 | spin_unlock_irqrestore(&dev->sriov.going_down_lock, flags); | |
1103 | } | |
1104 | ||
1105 | static int mlx4_ib_post_pv_qp_buf(struct mlx4_ib_demux_pv_ctx *ctx, | |
1106 | struct mlx4_ib_demux_pv_qp *tun_qp, | |
1107 | int index) | |
1108 | { | |
1109 | struct ib_sge sg_list; | |
1110 | struct ib_recv_wr recv_wr, *bad_recv_wr; | |
1111 | int size; | |
1112 | ||
1113 | size = (tun_qp->qp->qp_type == IB_QPT_UD) ? | |
1114 | sizeof (struct mlx4_tunnel_mad) : sizeof (struct mlx4_mad_rcv_buf); | |
1115 | ||
1116 | sg_list.addr = tun_qp->ring[index].map; | |
1117 | sg_list.length = size; | |
1118 | sg_list.lkey = ctx->mr->lkey; | |
1119 | ||
1120 | recv_wr.next = NULL; | |
1121 | recv_wr.sg_list = &sg_list; | |
1122 | recv_wr.num_sge = 1; | |
1123 | recv_wr.wr_id = (u64) index | MLX4_TUN_WRID_RECV | | |
1124 | MLX4_TUN_SET_WRID_QPN(tun_qp->proxy_qpt); | |
1125 | ib_dma_sync_single_for_device(ctx->ib_dev, tun_qp->ring[index].map, | |
1126 | size, DMA_FROM_DEVICE); | |
1127 | return ib_post_recv(tun_qp->qp, &recv_wr, &bad_recv_wr); | |
1128 | } | |
1129 | ||
37bfc7c1 JM |
1130 | static int mlx4_ib_multiplex_sa_handler(struct ib_device *ibdev, int port, |
1131 | int slave, struct ib_sa_mad *sa_mad) | |
1132 | { | |
b9c5d6a6 OD |
1133 | int ret = 0; |
1134 | ||
1135 | /* dispatch to different sa handlers */ | |
1136 | switch (be16_to_cpu(sa_mad->mad_hdr.attr_id)) { | |
1137 | case IB_SA_ATTR_MC_MEMBER_REC: | |
1138 | ret = mlx4_ib_mcg_multiplex_handler(ibdev, port, slave, sa_mad); | |
1139 | break; | |
1140 | default: | |
1141 | break; | |
1142 | } | |
1143 | return ret; | |
37bfc7c1 JM |
1144 | } |
1145 | ||
1146 | static int is_proxy_qp0(struct mlx4_ib_dev *dev, int qpn, int slave) | |
1147 | { | |
47605df9 | 1148 | int proxy_start = dev->dev->phys_caps.base_proxy_sqpn + 8 * slave; |
37bfc7c1 | 1149 | |
47605df9 | 1150 | return (qpn >= proxy_start && qpn <= proxy_start + 1); |
37bfc7c1 JM |
1151 | } |
1152 | ||
1153 | ||
1154 | int mlx4_ib_send_to_wire(struct mlx4_ib_dev *dev, int slave, u8 port, | |
5ea8bbfc JM |
1155 | enum ib_qp_type dest_qpt, u16 pkey_index, |
1156 | u32 remote_qpn, u32 qkey, struct ib_ah_attr *attr, | |
1157 | u8 *s_mac, struct ib_mad *mad) | |
37bfc7c1 JM |
1158 | { |
1159 | struct ib_sge list; | |
1160 | struct ib_send_wr wr, *bad_wr; | |
1161 | struct mlx4_ib_demux_pv_ctx *sqp_ctx; | |
1162 | struct mlx4_ib_demux_pv_qp *sqp; | |
1163 | struct mlx4_mad_snd_buf *sqp_mad; | |
1164 | struct ib_ah *ah; | |
1165 | struct ib_qp *send_qp = NULL; | |
1166 | unsigned wire_tx_ix = 0; | |
1167 | int ret = 0; | |
1168 | u16 wire_pkey_ix; | |
1169 | int src_qpnum; | |
1170 | u8 sgid_index; | |
1171 | ||
1172 | ||
1173 | sqp_ctx = dev->sriov.sqps[port-1]; | |
1174 | ||
1175 | /* check if proxy qp created */ | |
1176 | if (!sqp_ctx || sqp_ctx->state != DEMUX_PV_STATE_ACTIVE) | |
1177 | return -EAGAIN; | |
1178 | ||
37bfc7c1 JM |
1179 | if (dest_qpt == IB_QPT_SMI) { |
1180 | src_qpnum = 0; | |
1181 | sqp = &sqp_ctx->qp[0]; | |
1182 | wire_pkey_ix = dev->pkeys.virt2phys_pkey[slave][port - 1][0]; | |
1183 | } else { | |
1184 | src_qpnum = 1; | |
1185 | sqp = &sqp_ctx->qp[1]; | |
1186 | wire_pkey_ix = dev->pkeys.virt2phys_pkey[slave][port - 1][pkey_index]; | |
1187 | } | |
1188 | ||
1189 | send_qp = sqp->qp; | |
1190 | ||
1191 | /* create ah */ | |
1192 | sgid_index = attr->grh.sgid_index; | |
1193 | attr->grh.sgid_index = 0; | |
1194 | ah = ib_create_ah(sqp_ctx->pd, attr); | |
1195 | if (IS_ERR(ah)) | |
1196 | return -ENOMEM; | |
1197 | attr->grh.sgid_index = sgid_index; | |
1198 | to_mah(ah)->av.ib.gid_index = sgid_index; | |
1199 | /* get rid of force-loopback bit */ | |
1200 | to_mah(ah)->av.ib.port_pd &= cpu_to_be32(0x7FFFFFFF); | |
1201 | spin_lock(&sqp->tx_lock); | |
1202 | if (sqp->tx_ix_head - sqp->tx_ix_tail >= | |
1203 | (MLX4_NUM_TUNNEL_BUFS - 1)) | |
1204 | ret = -EAGAIN; | |
1205 | else | |
1206 | wire_tx_ix = (++sqp->tx_ix_head) & (MLX4_NUM_TUNNEL_BUFS - 1); | |
1207 | spin_unlock(&sqp->tx_lock); | |
1208 | if (ret) | |
1209 | goto out; | |
1210 | ||
1211 | sqp_mad = (struct mlx4_mad_snd_buf *) (sqp->tx_ring[wire_tx_ix].buf.addr); | |
1212 | if (sqp->tx_ring[wire_tx_ix].ah) | |
1213 | ib_destroy_ah(sqp->tx_ring[wire_tx_ix].ah); | |
1214 | sqp->tx_ring[wire_tx_ix].ah = ah; | |
1215 | ib_dma_sync_single_for_cpu(&dev->ib_dev, | |
1216 | sqp->tx_ring[wire_tx_ix].buf.map, | |
1217 | sizeof (struct mlx4_mad_snd_buf), | |
1218 | DMA_TO_DEVICE); | |
1219 | ||
1220 | memcpy(&sqp_mad->payload, mad, sizeof *mad); | |
1221 | ||
1222 | ib_dma_sync_single_for_device(&dev->ib_dev, | |
1223 | sqp->tx_ring[wire_tx_ix].buf.map, | |
1224 | sizeof (struct mlx4_mad_snd_buf), | |
1225 | DMA_TO_DEVICE); | |
1226 | ||
1227 | list.addr = sqp->tx_ring[wire_tx_ix].buf.map; | |
1228 | list.length = sizeof (struct mlx4_mad_snd_buf); | |
1229 | list.lkey = sqp_ctx->mr->lkey; | |
1230 | ||
1231 | wr.wr.ud.ah = ah; | |
1232 | wr.wr.ud.port_num = port; | |
1233 | wr.wr.ud.pkey_index = wire_pkey_ix; | |
1234 | wr.wr.ud.remote_qkey = qkey; | |
1235 | wr.wr.ud.remote_qpn = remote_qpn; | |
1236 | wr.next = NULL; | |
1237 | wr.wr_id = ((u64) wire_tx_ix) | MLX4_TUN_SET_WRID_QPN(src_qpnum); | |
1238 | wr.sg_list = &list; | |
1239 | wr.num_sge = 1; | |
1240 | wr.opcode = IB_WR_SEND; | |
1241 | wr.send_flags = IB_SEND_SIGNALED; | |
5ea8bbfc JM |
1242 | if (s_mac) |
1243 | memcpy(to_mah(ah)->av.eth.s_mac, s_mac, 6); | |
1244 | ||
37bfc7c1 JM |
1245 | |
1246 | ret = ib_post_send(send_qp, &wr, &bad_wr); | |
1247 | out: | |
1248 | if (ret) | |
1249 | ib_destroy_ah(ah); | |
1250 | return ret; | |
1251 | } | |
1252 | ||
b6ffaeff JM |
1253 | static int get_slave_base_gid_ix(struct mlx4_ib_dev *dev, int slave, int port) |
1254 | { | |
b6ffaeff JM |
1255 | if (rdma_port_get_link_layer(&dev->ib_dev, port) == IB_LINK_LAYER_INFINIBAND) |
1256 | return slave; | |
449fc488 | 1257 | return mlx4_get_base_gid_ix(dev->dev, slave, port); |
b6ffaeff JM |
1258 | } |
1259 | ||
1260 | static void fill_in_real_sgid_index(struct mlx4_ib_dev *dev, int slave, int port, | |
1261 | struct ib_ah_attr *ah_attr) | |
1262 | { | |
1263 | if (rdma_port_get_link_layer(&dev->ib_dev, port) == IB_LINK_LAYER_INFINIBAND) | |
1264 | ah_attr->grh.sgid_index = slave; | |
1265 | else | |
1266 | ah_attr->grh.sgid_index += get_slave_base_gid_ix(dev, slave, port); | |
1267 | } | |
1268 | ||
37bfc7c1 JM |
1269 | static void mlx4_ib_multiplex_mad(struct mlx4_ib_demux_pv_ctx *ctx, struct ib_wc *wc) |
1270 | { | |
1271 | struct mlx4_ib_dev *dev = to_mdev(ctx->ib_dev); | |
1272 | struct mlx4_ib_demux_pv_qp *tun_qp = &ctx->qp[MLX4_TUN_WRID_QPN(wc->wr_id)]; | |
1273 | int wr_ix = wc->wr_id & (MLX4_NUM_TUNNEL_BUFS - 1); | |
1274 | struct mlx4_tunnel_mad *tunnel = tun_qp->ring[wr_ix].addr; | |
1275 | struct mlx4_ib_ah ah; | |
1276 | struct ib_ah_attr ah_attr; | |
1277 | u8 *slave_id; | |
1278 | int slave; | |
449fc488 | 1279 | int port; |
37bfc7c1 JM |
1280 | |
1281 | /* Get slave that sent this packet */ | |
47605df9 JM |
1282 | if (wc->src_qp < dev->dev->phys_caps.base_proxy_sqpn || |
1283 | wc->src_qp >= dev->dev->phys_caps.base_proxy_sqpn + 8 * MLX4_MFUNC_MAX || | |
37bfc7c1 JM |
1284 | (wc->src_qp & 0x1) != ctx->port - 1 || |
1285 | wc->src_qp & 0x4) { | |
1286 | mlx4_ib_warn(ctx->ib_dev, "can't multiplex bad sqp:%d\n", wc->src_qp); | |
1287 | return; | |
1288 | } | |
47605df9 | 1289 | slave = ((wc->src_qp & ~0x7) - dev->dev->phys_caps.base_proxy_sqpn) / 8; |
37bfc7c1 JM |
1290 | if (slave != ctx->slave) { |
1291 | mlx4_ib_warn(ctx->ib_dev, "can't multiplex bad sqp:%d: " | |
1292 | "belongs to another slave\n", wc->src_qp); | |
1293 | return; | |
1294 | } | |
37bfc7c1 JM |
1295 | |
1296 | /* Map transaction ID */ | |
1297 | ib_dma_sync_single_for_cpu(ctx->ib_dev, tun_qp->ring[wr_ix].map, | |
1298 | sizeof (struct mlx4_tunnel_mad), | |
1299 | DMA_FROM_DEVICE); | |
1300 | switch (tunnel->mad.mad_hdr.method) { | |
1301 | case IB_MGMT_METHOD_SET: | |
1302 | case IB_MGMT_METHOD_GET: | |
1303 | case IB_MGMT_METHOD_REPORT: | |
1304 | case IB_SA_METHOD_GET_TABLE: | |
1305 | case IB_SA_METHOD_DELETE: | |
1306 | case IB_SA_METHOD_GET_MULTI: | |
1307 | case IB_SA_METHOD_GET_TRACE_TBL: | |
1308 | slave_id = (u8 *) &tunnel->mad.mad_hdr.tid; | |
1309 | if (*slave_id) { | |
1310 | mlx4_ib_warn(ctx->ib_dev, "egress mad has non-null tid msb:%d " | |
1311 | "class:%d slave:%d\n", *slave_id, | |
1312 | tunnel->mad.mad_hdr.mgmt_class, slave); | |
1313 | return; | |
1314 | } else | |
1315 | *slave_id = slave; | |
1316 | default: | |
1317 | /* nothing */; | |
1318 | } | |
1319 | ||
1320 | /* Class-specific handling */ | |
1321 | switch (tunnel->mad.mad_hdr.mgmt_class) { | |
97982f5a JM |
1322 | case IB_MGMT_CLASS_SUBN_LID_ROUTED: |
1323 | case IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE: | |
1324 | if (slave != mlx4_master_func_num(dev->dev) && | |
1325 | !mlx4_vf_smi_enabled(dev->dev, slave, ctx->port)) | |
1326 | return; | |
1327 | break; | |
37bfc7c1 JM |
1328 | case IB_MGMT_CLASS_SUBN_ADM: |
1329 | if (mlx4_ib_multiplex_sa_handler(ctx->ib_dev, ctx->port, slave, | |
1330 | (struct ib_sa_mad *) &tunnel->mad)) | |
1331 | return; | |
1332 | break; | |
3cf69cc8 AV |
1333 | case IB_MGMT_CLASS_CM: |
1334 | if (mlx4_ib_multiplex_cm_handler(ctx->ib_dev, ctx->port, slave, | |
1335 | (struct ib_mad *) &tunnel->mad)) | |
1336 | return; | |
1337 | break; | |
37bfc7c1 JM |
1338 | case IB_MGMT_CLASS_DEVICE_MGMT: |
1339 | if (tunnel->mad.mad_hdr.method != IB_MGMT_METHOD_GET && | |
1340 | tunnel->mad.mad_hdr.method != IB_MGMT_METHOD_SET) | |
1341 | return; | |
1342 | break; | |
1343 | default: | |
1344 | /* Drop unsupported classes for slaves in tunnel mode */ | |
1345 | if (slave != mlx4_master_func_num(dev->dev)) { | |
1346 | mlx4_ib_warn(ctx->ib_dev, "dropping unsupported egress mad from class:%d " | |
1347 | "for slave:%d\n", tunnel->mad.mad_hdr.mgmt_class, slave); | |
1348 | return; | |
1349 | } | |
1350 | } | |
1351 | ||
1352 | /* We are using standard ib_core services to send the mad, so generate a | |
1353 | * stadard address handle by decoding the tunnelled mlx4_ah fields */ | |
1354 | memcpy(&ah.av, &tunnel->hdr.av, sizeof (struct mlx4_av)); | |
1355 | ah.ibah.device = ctx->ib_dev; | |
1356 | mlx4_ib_query_ah(&ah.ibah, &ah_attr); | |
6ee51a4e | 1357 | if (ah_attr.ah_flags & IB_AH_GRH) |
b6ffaeff | 1358 | fill_in_real_sgid_index(dev, slave, ctx->port, &ah_attr); |
37bfc7c1 | 1359 | |
449fc488 MB |
1360 | port = mlx4_slave_convert_port(dev->dev, slave, ah_attr.port_num); |
1361 | if (port < 0) | |
1362 | return; | |
1363 | ah_attr.port_num = port; | |
5ea8bbfc JM |
1364 | memcpy(ah_attr.dmac, tunnel->hdr.mac, 6); |
1365 | ah_attr.vlan_id = be16_to_cpu(tunnel->hdr.vlan); | |
1366 | /* if slave have default vlan use it */ | |
1367 | mlx4_get_slave_default_vlan(dev->dev, ctx->port, slave, | |
1368 | &ah_attr.vlan_id, &ah_attr.sl); | |
1369 | ||
37bfc7c1 JM |
1370 | mlx4_ib_send_to_wire(dev, slave, ctx->port, |
1371 | is_proxy_qp0(dev, wc->src_qp, slave) ? | |
1372 | IB_QPT_SMI : IB_QPT_GSI, | |
1373 | be16_to_cpu(tunnel->hdr.pkey_index), | |
1374 | be32_to_cpu(tunnel->hdr.remote_qpn), | |
1375 | be32_to_cpu(tunnel->hdr.qkey), | |
5ea8bbfc | 1376 | &ah_attr, wc->smac, &tunnel->mad); |
37bfc7c1 JM |
1377 | } |
1378 | ||
fc06573d JM |
1379 | static int mlx4_ib_alloc_pv_bufs(struct mlx4_ib_demux_pv_ctx *ctx, |
1380 | enum ib_qp_type qp_type, int is_tun) | |
1381 | { | |
1382 | int i; | |
1383 | struct mlx4_ib_demux_pv_qp *tun_qp; | |
1384 | int rx_buf_size, tx_buf_size; | |
1385 | ||
1386 | if (qp_type > IB_QPT_GSI) | |
1387 | return -EINVAL; | |
1388 | ||
1389 | tun_qp = &ctx->qp[qp_type]; | |
1390 | ||
1391 | tun_qp->ring = kzalloc(sizeof (struct mlx4_ib_buf) * MLX4_NUM_TUNNEL_BUFS, | |
1392 | GFP_KERNEL); | |
1393 | if (!tun_qp->ring) | |
1394 | return -ENOMEM; | |
1395 | ||
1396 | tun_qp->tx_ring = kcalloc(MLX4_NUM_TUNNEL_BUFS, | |
1397 | sizeof (struct mlx4_ib_tun_tx_buf), | |
1398 | GFP_KERNEL); | |
1399 | if (!tun_qp->tx_ring) { | |
1400 | kfree(tun_qp->ring); | |
1401 | tun_qp->ring = NULL; | |
1402 | return -ENOMEM; | |
1403 | } | |
1404 | ||
1405 | if (is_tun) { | |
1406 | rx_buf_size = sizeof (struct mlx4_tunnel_mad); | |
1407 | tx_buf_size = sizeof (struct mlx4_rcv_tunnel_mad); | |
1408 | } else { | |
1409 | rx_buf_size = sizeof (struct mlx4_mad_rcv_buf); | |
1410 | tx_buf_size = sizeof (struct mlx4_mad_snd_buf); | |
1411 | } | |
1412 | ||
1413 | for (i = 0; i < MLX4_NUM_TUNNEL_BUFS; i++) { | |
1414 | tun_qp->ring[i].addr = kmalloc(rx_buf_size, GFP_KERNEL); | |
1415 | if (!tun_qp->ring[i].addr) | |
1416 | goto err; | |
1417 | tun_qp->ring[i].map = ib_dma_map_single(ctx->ib_dev, | |
1418 | tun_qp->ring[i].addr, | |
1419 | rx_buf_size, | |
1420 | DMA_FROM_DEVICE); | |
1421 | } | |
1422 | ||
1423 | for (i = 0; i < MLX4_NUM_TUNNEL_BUFS; i++) { | |
1424 | tun_qp->tx_ring[i].buf.addr = | |
1425 | kmalloc(tx_buf_size, GFP_KERNEL); | |
1426 | if (!tun_qp->tx_ring[i].buf.addr) | |
1427 | goto tx_err; | |
1428 | tun_qp->tx_ring[i].buf.map = | |
1429 | ib_dma_map_single(ctx->ib_dev, | |
1430 | tun_qp->tx_ring[i].buf.addr, | |
1431 | tx_buf_size, | |
1432 | DMA_TO_DEVICE); | |
1433 | tun_qp->tx_ring[i].ah = NULL; | |
1434 | } | |
1435 | spin_lock_init(&tun_qp->tx_lock); | |
1436 | tun_qp->tx_ix_head = 0; | |
1437 | tun_qp->tx_ix_tail = 0; | |
1438 | tun_qp->proxy_qpt = qp_type; | |
1439 | ||
1440 | return 0; | |
1441 | ||
1442 | tx_err: | |
1443 | while (i > 0) { | |
1444 | --i; | |
1445 | ib_dma_unmap_single(ctx->ib_dev, tun_qp->tx_ring[i].buf.map, | |
1446 | tx_buf_size, DMA_TO_DEVICE); | |
1447 | kfree(tun_qp->tx_ring[i].buf.addr); | |
1448 | } | |
1449 | kfree(tun_qp->tx_ring); | |
1450 | tun_qp->tx_ring = NULL; | |
1451 | i = MLX4_NUM_TUNNEL_BUFS; | |
1452 | err: | |
1453 | while (i > 0) { | |
1454 | --i; | |
1455 | ib_dma_unmap_single(ctx->ib_dev, tun_qp->ring[i].map, | |
1456 | rx_buf_size, DMA_FROM_DEVICE); | |
1457 | kfree(tun_qp->ring[i].addr); | |
1458 | } | |
1459 | kfree(tun_qp->ring); | |
1460 | tun_qp->ring = NULL; | |
1461 | return -ENOMEM; | |
1462 | } | |
1463 | ||
1464 | static void mlx4_ib_free_pv_qp_bufs(struct mlx4_ib_demux_pv_ctx *ctx, | |
1465 | enum ib_qp_type qp_type, int is_tun) | |
1466 | { | |
1467 | int i; | |
1468 | struct mlx4_ib_demux_pv_qp *tun_qp; | |
1469 | int rx_buf_size, tx_buf_size; | |
1470 | ||
1471 | if (qp_type > IB_QPT_GSI) | |
1472 | return; | |
1473 | ||
1474 | tun_qp = &ctx->qp[qp_type]; | |
1475 | if (is_tun) { | |
1476 | rx_buf_size = sizeof (struct mlx4_tunnel_mad); | |
1477 | tx_buf_size = sizeof (struct mlx4_rcv_tunnel_mad); | |
1478 | } else { | |
1479 | rx_buf_size = sizeof (struct mlx4_mad_rcv_buf); | |
1480 | tx_buf_size = sizeof (struct mlx4_mad_snd_buf); | |
1481 | } | |
1482 | ||
1483 | ||
1484 | for (i = 0; i < MLX4_NUM_TUNNEL_BUFS; i++) { | |
1485 | ib_dma_unmap_single(ctx->ib_dev, tun_qp->ring[i].map, | |
1486 | rx_buf_size, DMA_FROM_DEVICE); | |
1487 | kfree(tun_qp->ring[i].addr); | |
1488 | } | |
1489 | ||
1490 | for (i = 0; i < MLX4_NUM_TUNNEL_BUFS; i++) { | |
1491 | ib_dma_unmap_single(ctx->ib_dev, tun_qp->tx_ring[i].buf.map, | |
1492 | tx_buf_size, DMA_TO_DEVICE); | |
1493 | kfree(tun_qp->tx_ring[i].buf.addr); | |
1494 | if (tun_qp->tx_ring[i].ah) | |
1495 | ib_destroy_ah(tun_qp->tx_ring[i].ah); | |
1496 | } | |
1497 | kfree(tun_qp->tx_ring); | |
1498 | kfree(tun_qp->ring); | |
1499 | } | |
1500 | ||
1501 | static void mlx4_ib_tunnel_comp_worker(struct work_struct *work) | |
1502 | { | |
37bfc7c1 JM |
1503 | struct mlx4_ib_demux_pv_ctx *ctx; |
1504 | struct mlx4_ib_demux_pv_qp *tun_qp; | |
1505 | struct ib_wc wc; | |
1506 | int ret; | |
1507 | ctx = container_of(work, struct mlx4_ib_demux_pv_ctx, work); | |
1508 | ib_req_notify_cq(ctx->cq, IB_CQ_NEXT_COMP); | |
1509 | ||
1510 | while (ib_poll_cq(ctx->cq, 1, &wc) == 1) { | |
1511 | tun_qp = &ctx->qp[MLX4_TUN_WRID_QPN(wc.wr_id)]; | |
1512 | if (wc.status == IB_WC_SUCCESS) { | |
1513 | switch (wc.opcode) { | |
1514 | case IB_WC_RECV: | |
1515 | mlx4_ib_multiplex_mad(ctx, &wc); | |
1516 | ret = mlx4_ib_post_pv_qp_buf(ctx, tun_qp, | |
1517 | wc.wr_id & | |
1518 | (MLX4_NUM_TUNNEL_BUFS - 1)); | |
1519 | if (ret) | |
1520 | pr_err("Failed reposting tunnel " | |
1521 | "buf:%lld\n", wc.wr_id); | |
1522 | break; | |
1523 | case IB_WC_SEND: | |
1524 | pr_debug("received tunnel send completion:" | |
1525 | "wrid=0x%llx, status=0x%x\n", | |
1526 | wc.wr_id, wc.status); | |
1527 | ib_destroy_ah(tun_qp->tx_ring[wc.wr_id & | |
1528 | (MLX4_NUM_TUNNEL_BUFS - 1)].ah); | |
1529 | tun_qp->tx_ring[wc.wr_id & (MLX4_NUM_TUNNEL_BUFS - 1)].ah | |
1530 | = NULL; | |
1531 | spin_lock(&tun_qp->tx_lock); | |
1532 | tun_qp->tx_ix_tail++; | |
1533 | spin_unlock(&tun_qp->tx_lock); | |
1534 | ||
1535 | break; | |
1536 | default: | |
1537 | break; | |
1538 | } | |
1539 | } else { | |
1540 | pr_debug("mlx4_ib: completion error in tunnel: %d." | |
1541 | " status = %d, wrid = 0x%llx\n", | |
1542 | ctx->slave, wc.status, wc.wr_id); | |
1543 | if (!MLX4_TUN_IS_RECV(wc.wr_id)) { | |
1544 | ib_destroy_ah(tun_qp->tx_ring[wc.wr_id & | |
1545 | (MLX4_NUM_TUNNEL_BUFS - 1)].ah); | |
1546 | tun_qp->tx_ring[wc.wr_id & (MLX4_NUM_TUNNEL_BUFS - 1)].ah | |
1547 | = NULL; | |
1548 | spin_lock(&tun_qp->tx_lock); | |
1549 | tun_qp->tx_ix_tail++; | |
1550 | spin_unlock(&tun_qp->tx_lock); | |
1551 | } | |
1552 | } | |
1553 | } | |
fc06573d JM |
1554 | } |
1555 | ||
1556 | static void pv_qp_event_handler(struct ib_event *event, void *qp_context) | |
1557 | { | |
1558 | struct mlx4_ib_demux_pv_ctx *sqp = qp_context; | |
1559 | ||
1560 | /* It's worse than that! He's dead, Jim! */ | |
1561 | pr_err("Fatal error (%d) on a MAD QP on port %d\n", | |
1562 | event->event, sqp->port); | |
1563 | } | |
1564 | ||
1565 | static int create_pv_sqp(struct mlx4_ib_demux_pv_ctx *ctx, | |
1566 | enum ib_qp_type qp_type, int create_tun) | |
1567 | { | |
1568 | int i, ret; | |
1569 | struct mlx4_ib_demux_pv_qp *tun_qp; | |
1570 | struct mlx4_ib_qp_tunnel_init_attr qp_init_attr; | |
1571 | struct ib_qp_attr attr; | |
1572 | int qp_attr_mask_INIT; | |
1573 | ||
1574 | if (qp_type > IB_QPT_GSI) | |
1575 | return -EINVAL; | |
1576 | ||
1577 | tun_qp = &ctx->qp[qp_type]; | |
1578 | ||
1579 | memset(&qp_init_attr, 0, sizeof qp_init_attr); | |
1580 | qp_init_attr.init_attr.send_cq = ctx->cq; | |
1581 | qp_init_attr.init_attr.recv_cq = ctx->cq; | |
1582 | qp_init_attr.init_attr.sq_sig_type = IB_SIGNAL_ALL_WR; | |
1583 | qp_init_attr.init_attr.cap.max_send_wr = MLX4_NUM_TUNNEL_BUFS; | |
1584 | qp_init_attr.init_attr.cap.max_recv_wr = MLX4_NUM_TUNNEL_BUFS; | |
1585 | qp_init_attr.init_attr.cap.max_send_sge = 1; | |
1586 | qp_init_attr.init_attr.cap.max_recv_sge = 1; | |
1587 | if (create_tun) { | |
1588 | qp_init_attr.init_attr.qp_type = IB_QPT_UD; | |
1589 | qp_init_attr.init_attr.create_flags = MLX4_IB_SRIOV_TUNNEL_QP; | |
1590 | qp_init_attr.port = ctx->port; | |
1591 | qp_init_attr.slave = ctx->slave; | |
1592 | qp_init_attr.proxy_qp_type = qp_type; | |
1593 | qp_attr_mask_INIT = IB_QP_STATE | IB_QP_PKEY_INDEX | | |
1594 | IB_QP_QKEY | IB_QP_PORT; | |
1595 | } else { | |
1596 | qp_init_attr.init_attr.qp_type = qp_type; | |
1597 | qp_init_attr.init_attr.create_flags = MLX4_IB_SRIOV_SQP; | |
1598 | qp_attr_mask_INIT = IB_QP_STATE | IB_QP_PKEY_INDEX | IB_QP_QKEY; | |
1599 | } | |
1600 | qp_init_attr.init_attr.port_num = ctx->port; | |
1601 | qp_init_attr.init_attr.qp_context = ctx; | |
1602 | qp_init_attr.init_attr.event_handler = pv_qp_event_handler; | |
1603 | tun_qp->qp = ib_create_qp(ctx->pd, &qp_init_attr.init_attr); | |
1604 | if (IS_ERR(tun_qp->qp)) { | |
1605 | ret = PTR_ERR(tun_qp->qp); | |
1606 | tun_qp->qp = NULL; | |
1607 | pr_err("Couldn't create %s QP (%d)\n", | |
1608 | create_tun ? "tunnel" : "special", ret); | |
1609 | return ret; | |
1610 | } | |
1611 | ||
1612 | memset(&attr, 0, sizeof attr); | |
1613 | attr.qp_state = IB_QPS_INIT; | |
3eac103f JM |
1614 | ret = 0; |
1615 | if (create_tun) | |
1616 | ret = find_slave_port_pkey_ix(to_mdev(ctx->ib_dev), ctx->slave, | |
1617 | ctx->port, IB_DEFAULT_PKEY_FULL, | |
1618 | &attr.pkey_index); | |
1619 | if (ret || !create_tun) | |
1620 | attr.pkey_index = | |
1621 | to_mdev(ctx->ib_dev)->pkeys.virt2phys_pkey[ctx->slave][ctx->port - 1][0]; | |
fc06573d JM |
1622 | attr.qkey = IB_QP1_QKEY; |
1623 | attr.port_num = ctx->port; | |
1624 | ret = ib_modify_qp(tun_qp->qp, &attr, qp_attr_mask_INIT); | |
1625 | if (ret) { | |
1626 | pr_err("Couldn't change %s qp state to INIT (%d)\n", | |
1627 | create_tun ? "tunnel" : "special", ret); | |
1628 | goto err_qp; | |
1629 | } | |
1630 | attr.qp_state = IB_QPS_RTR; | |
1631 | ret = ib_modify_qp(tun_qp->qp, &attr, IB_QP_STATE); | |
1632 | if (ret) { | |
1633 | pr_err("Couldn't change %s qp state to RTR (%d)\n", | |
1634 | create_tun ? "tunnel" : "special", ret); | |
1635 | goto err_qp; | |
1636 | } | |
1637 | attr.qp_state = IB_QPS_RTS; | |
1638 | attr.sq_psn = 0; | |
1639 | ret = ib_modify_qp(tun_qp->qp, &attr, IB_QP_STATE | IB_QP_SQ_PSN); | |
1640 | if (ret) { | |
1641 | pr_err("Couldn't change %s qp state to RTS (%d)\n", | |
1642 | create_tun ? "tunnel" : "special", ret); | |
1643 | goto err_qp; | |
1644 | } | |
1645 | ||
1646 | for (i = 0; i < MLX4_NUM_TUNNEL_BUFS; i++) { | |
1647 | ret = mlx4_ib_post_pv_qp_buf(ctx, tun_qp, i); | |
1648 | if (ret) { | |
1649 | pr_err(" mlx4_ib_post_pv_buf error" | |
1650 | " (err = %d, i = %d)\n", ret, i); | |
1651 | goto err_qp; | |
1652 | } | |
1653 | } | |
1654 | return 0; | |
1655 | ||
1656 | err_qp: | |
1657 | ib_destroy_qp(tun_qp->qp); | |
1658 | tun_qp->qp = NULL; | |
1659 | return ret; | |
1660 | } | |
1661 | ||
1662 | /* | |
1663 | * IB MAD completion callback for real SQPs | |
1664 | */ | |
1665 | static void mlx4_ib_sqp_comp_worker(struct work_struct *work) | |
1666 | { | |
37bfc7c1 JM |
1667 | struct mlx4_ib_demux_pv_ctx *ctx; |
1668 | struct mlx4_ib_demux_pv_qp *sqp; | |
1669 | struct ib_wc wc; | |
1670 | struct ib_grh *grh; | |
1671 | struct ib_mad *mad; | |
1672 | ||
1673 | ctx = container_of(work, struct mlx4_ib_demux_pv_ctx, work); | |
1674 | ib_req_notify_cq(ctx->cq, IB_CQ_NEXT_COMP); | |
1675 | ||
1676 | while (mlx4_ib_poll_cq(ctx->cq, 1, &wc) == 1) { | |
1677 | sqp = &ctx->qp[MLX4_TUN_WRID_QPN(wc.wr_id)]; | |
1678 | if (wc.status == IB_WC_SUCCESS) { | |
1679 | switch (wc.opcode) { | |
1680 | case IB_WC_SEND: | |
1681 | ib_destroy_ah(sqp->tx_ring[wc.wr_id & | |
1682 | (MLX4_NUM_TUNNEL_BUFS - 1)].ah); | |
1683 | sqp->tx_ring[wc.wr_id & (MLX4_NUM_TUNNEL_BUFS - 1)].ah | |
1684 | = NULL; | |
1685 | spin_lock(&sqp->tx_lock); | |
1686 | sqp->tx_ix_tail++; | |
1687 | spin_unlock(&sqp->tx_lock); | |
1688 | break; | |
1689 | case IB_WC_RECV: | |
1690 | mad = (struct ib_mad *) &(((struct mlx4_mad_rcv_buf *) | |
1691 | (sqp->ring[wc.wr_id & | |
1692 | (MLX4_NUM_TUNNEL_BUFS - 1)].addr))->payload); | |
1693 | grh = &(((struct mlx4_mad_rcv_buf *) | |
1694 | (sqp->ring[wc.wr_id & | |
1695 | (MLX4_NUM_TUNNEL_BUFS - 1)].addr))->grh); | |
1696 | mlx4_ib_demux_mad(ctx->ib_dev, ctx->port, &wc, grh, mad); | |
1697 | if (mlx4_ib_post_pv_qp_buf(ctx, sqp, wc.wr_id & | |
1698 | (MLX4_NUM_TUNNEL_BUFS - 1))) | |
1699 | pr_err("Failed reposting SQP " | |
1700 | "buf:%lld\n", wc.wr_id); | |
1701 | break; | |
1702 | default: | |
1703 | BUG_ON(1); | |
1704 | break; | |
1705 | } | |
1706 | } else { | |
1707 | pr_debug("mlx4_ib: completion error in tunnel: %d." | |
1708 | " status = %d, wrid = 0x%llx\n", | |
1709 | ctx->slave, wc.status, wc.wr_id); | |
1710 | if (!MLX4_TUN_IS_RECV(wc.wr_id)) { | |
1711 | ib_destroy_ah(sqp->tx_ring[wc.wr_id & | |
1712 | (MLX4_NUM_TUNNEL_BUFS - 1)].ah); | |
1713 | sqp->tx_ring[wc.wr_id & (MLX4_NUM_TUNNEL_BUFS - 1)].ah | |
1714 | = NULL; | |
1715 | spin_lock(&sqp->tx_lock); | |
1716 | sqp->tx_ix_tail++; | |
1717 | spin_unlock(&sqp->tx_lock); | |
1718 | } | |
1719 | } | |
1720 | } | |
fc06573d JM |
1721 | } |
1722 | ||
1723 | static int alloc_pv_object(struct mlx4_ib_dev *dev, int slave, int port, | |
1724 | struct mlx4_ib_demux_pv_ctx **ret_ctx) | |
1725 | { | |
1726 | struct mlx4_ib_demux_pv_ctx *ctx; | |
1727 | ||
1728 | *ret_ctx = NULL; | |
1729 | ctx = kzalloc(sizeof (struct mlx4_ib_demux_pv_ctx), GFP_KERNEL); | |
1730 | if (!ctx) { | |
1731 | pr_err("failed allocating pv resource context " | |
1732 | "for port %d, slave %d\n", port, slave); | |
1733 | return -ENOMEM; | |
1734 | } | |
1735 | ||
1736 | ctx->ib_dev = &dev->ib_dev; | |
1737 | ctx->port = port; | |
1738 | ctx->slave = slave; | |
1739 | *ret_ctx = ctx; | |
1740 | return 0; | |
1741 | } | |
1742 | ||
1743 | static void free_pv_object(struct mlx4_ib_dev *dev, int slave, int port) | |
1744 | { | |
1745 | if (dev->sriov.demux[port - 1].tun[slave]) { | |
1746 | kfree(dev->sriov.demux[port - 1].tun[slave]); | |
1747 | dev->sriov.demux[port - 1].tun[slave] = NULL; | |
1748 | } | |
1749 | } | |
1750 | ||
1751 | static int create_pv_resources(struct ib_device *ibdev, int slave, int port, | |
1752 | int create_tun, struct mlx4_ib_demux_pv_ctx *ctx) | |
1753 | { | |
1754 | int ret, cq_size; | |
1755 | ||
3806d08c JM |
1756 | if (ctx->state != DEMUX_PV_STATE_DOWN) |
1757 | return -EEXIST; | |
1758 | ||
fc06573d | 1759 | ctx->state = DEMUX_PV_STATE_STARTING; |
97982f5a JM |
1760 | /* have QP0 only if link layer is IB */ |
1761 | if (rdma_port_get_link_layer(ibdev, ctx->port) == | |
1762 | IB_LINK_LAYER_INFINIBAND) | |
fc06573d JM |
1763 | ctx->has_smi = 1; |
1764 | ||
1765 | if (ctx->has_smi) { | |
1766 | ret = mlx4_ib_alloc_pv_bufs(ctx, IB_QPT_SMI, create_tun); | |
1767 | if (ret) { | |
1768 | pr_err("Failed allocating qp0 tunnel bufs (%d)\n", ret); | |
1769 | goto err_out; | |
1770 | } | |
1771 | } | |
1772 | ||
1773 | ret = mlx4_ib_alloc_pv_bufs(ctx, IB_QPT_GSI, create_tun); | |
1774 | if (ret) { | |
1775 | pr_err("Failed allocating qp1 tunnel bufs (%d)\n", ret); | |
1776 | goto err_out_qp0; | |
1777 | } | |
1778 | ||
1779 | cq_size = 2 * MLX4_NUM_TUNNEL_BUFS; | |
1780 | if (ctx->has_smi) | |
1781 | cq_size *= 2; | |
1782 | ||
1783 | ctx->cq = ib_create_cq(ctx->ib_dev, mlx4_ib_tunnel_comp_handler, | |
1784 | NULL, ctx, cq_size, 0); | |
1785 | if (IS_ERR(ctx->cq)) { | |
1786 | ret = PTR_ERR(ctx->cq); | |
1787 | pr_err("Couldn't create tunnel CQ (%d)\n", ret); | |
1788 | goto err_buf; | |
1789 | } | |
1790 | ||
1791 | ctx->pd = ib_alloc_pd(ctx->ib_dev); | |
1792 | if (IS_ERR(ctx->pd)) { | |
1793 | ret = PTR_ERR(ctx->pd); | |
1794 | pr_err("Couldn't create tunnel PD (%d)\n", ret); | |
1795 | goto err_cq; | |
1796 | } | |
1797 | ||
1798 | ctx->mr = ib_get_dma_mr(ctx->pd, IB_ACCESS_LOCAL_WRITE); | |
1799 | if (IS_ERR(ctx->mr)) { | |
1800 | ret = PTR_ERR(ctx->mr); | |
1801 | pr_err("Couldn't get tunnel DMA MR (%d)\n", ret); | |
1802 | goto err_pd; | |
1803 | } | |
1804 | ||
1805 | if (ctx->has_smi) { | |
1806 | ret = create_pv_sqp(ctx, IB_QPT_SMI, create_tun); | |
1807 | if (ret) { | |
1808 | pr_err("Couldn't create %s QP0 (%d)\n", | |
1809 | create_tun ? "tunnel for" : "", ret); | |
1810 | goto err_mr; | |
1811 | } | |
1812 | } | |
1813 | ||
1814 | ret = create_pv_sqp(ctx, IB_QPT_GSI, create_tun); | |
1815 | if (ret) { | |
1816 | pr_err("Couldn't create %s QP1 (%d)\n", | |
1817 | create_tun ? "tunnel for" : "", ret); | |
1818 | goto err_qp0; | |
1819 | } | |
1820 | ||
1821 | if (create_tun) | |
1822 | INIT_WORK(&ctx->work, mlx4_ib_tunnel_comp_worker); | |
1823 | else | |
1824 | INIT_WORK(&ctx->work, mlx4_ib_sqp_comp_worker); | |
1825 | ||
1826 | ctx->wq = to_mdev(ibdev)->sriov.demux[port - 1].wq; | |
1827 | ||
1828 | ret = ib_req_notify_cq(ctx->cq, IB_CQ_NEXT_COMP); | |
1829 | if (ret) { | |
1830 | pr_err("Couldn't arm tunnel cq (%d)\n", ret); | |
1831 | goto err_wq; | |
1832 | } | |
1833 | ctx->state = DEMUX_PV_STATE_ACTIVE; | |
1834 | return 0; | |
1835 | ||
1836 | err_wq: | |
1837 | ctx->wq = NULL; | |
1838 | ib_destroy_qp(ctx->qp[1].qp); | |
1839 | ctx->qp[1].qp = NULL; | |
1840 | ||
1841 | ||
1842 | err_qp0: | |
1843 | if (ctx->has_smi) | |
1844 | ib_destroy_qp(ctx->qp[0].qp); | |
1845 | ctx->qp[0].qp = NULL; | |
1846 | ||
1847 | err_mr: | |
1848 | ib_dereg_mr(ctx->mr); | |
1849 | ctx->mr = NULL; | |
1850 | ||
1851 | err_pd: | |
1852 | ib_dealloc_pd(ctx->pd); | |
1853 | ctx->pd = NULL; | |
1854 | ||
1855 | err_cq: | |
1856 | ib_destroy_cq(ctx->cq); | |
1857 | ctx->cq = NULL; | |
1858 | ||
1859 | err_buf: | |
1860 | mlx4_ib_free_pv_qp_bufs(ctx, IB_QPT_GSI, create_tun); | |
1861 | ||
1862 | err_out_qp0: | |
1863 | if (ctx->has_smi) | |
1864 | mlx4_ib_free_pv_qp_bufs(ctx, IB_QPT_SMI, create_tun); | |
1865 | err_out: | |
1866 | ctx->state = DEMUX_PV_STATE_DOWN; | |
1867 | return ret; | |
1868 | } | |
1869 | ||
1870 | static void destroy_pv_resources(struct mlx4_ib_dev *dev, int slave, int port, | |
1871 | struct mlx4_ib_demux_pv_ctx *ctx, int flush) | |
1872 | { | |
1873 | if (!ctx) | |
1874 | return; | |
1875 | if (ctx->state > DEMUX_PV_STATE_DOWN) { | |
1876 | ctx->state = DEMUX_PV_STATE_DOWNING; | |
1877 | if (flush) | |
1878 | flush_workqueue(ctx->wq); | |
1879 | if (ctx->has_smi) { | |
1880 | ib_destroy_qp(ctx->qp[0].qp); | |
1881 | ctx->qp[0].qp = NULL; | |
1882 | mlx4_ib_free_pv_qp_bufs(ctx, IB_QPT_SMI, 1); | |
1883 | } | |
1884 | ib_destroy_qp(ctx->qp[1].qp); | |
1885 | ctx->qp[1].qp = NULL; | |
1886 | mlx4_ib_free_pv_qp_bufs(ctx, IB_QPT_GSI, 1); | |
1887 | ib_dereg_mr(ctx->mr); | |
1888 | ctx->mr = NULL; | |
1889 | ib_dealloc_pd(ctx->pd); | |
1890 | ctx->pd = NULL; | |
1891 | ib_destroy_cq(ctx->cq); | |
1892 | ctx->cq = NULL; | |
1893 | ctx->state = DEMUX_PV_STATE_DOWN; | |
1894 | } | |
1895 | } | |
1896 | ||
1897 | static int mlx4_ib_tunnels_update(struct mlx4_ib_dev *dev, int slave, | |
1898 | int port, int do_init) | |
1899 | { | |
1900 | int ret = 0; | |
1901 | ||
1902 | if (!do_init) { | |
b9c5d6a6 | 1903 | clean_vf_mcast(&dev->sriov.demux[port - 1], slave); |
fc06573d JM |
1904 | /* for master, destroy real sqp resources */ |
1905 | if (slave == mlx4_master_func_num(dev->dev)) | |
1906 | destroy_pv_resources(dev, slave, port, | |
1907 | dev->sriov.sqps[port - 1], 1); | |
1908 | /* destroy the tunnel qp resources */ | |
1909 | destroy_pv_resources(dev, slave, port, | |
1910 | dev->sriov.demux[port - 1].tun[slave], 1); | |
1911 | return 0; | |
1912 | } | |
1913 | ||
1914 | /* create the tunnel qp resources */ | |
1915 | ret = create_pv_resources(&dev->ib_dev, slave, port, 1, | |
1916 | dev->sriov.demux[port - 1].tun[slave]); | |
1917 | ||
1918 | /* for master, create the real sqp resources */ | |
1919 | if (!ret && slave == mlx4_master_func_num(dev->dev)) | |
1920 | ret = create_pv_resources(&dev->ib_dev, slave, port, 0, | |
1921 | dev->sriov.sqps[port - 1]); | |
1922 | return ret; | |
1923 | } | |
1924 | ||
1925 | void mlx4_ib_tunnels_update_work(struct work_struct *work) | |
1926 | { | |
1927 | struct mlx4_ib_demux_work *dmxw; | |
1928 | ||
1929 | dmxw = container_of(work, struct mlx4_ib_demux_work, work); | |
1930 | mlx4_ib_tunnels_update(dmxw->dev, dmxw->slave, (int) dmxw->port, | |
1931 | dmxw->do_init); | |
1932 | kfree(dmxw); | |
1933 | return; | |
1934 | } | |
1935 | ||
1936 | static int mlx4_ib_alloc_demux_ctx(struct mlx4_ib_dev *dev, | |
1937 | struct mlx4_ib_demux_ctx *ctx, | |
1938 | int port) | |
1939 | { | |
1940 | char name[12]; | |
1941 | int ret = 0; | |
1942 | int i; | |
1943 | ||
1944 | ctx->tun = kcalloc(dev->dev->caps.sqp_demux, | |
1945 | sizeof (struct mlx4_ib_demux_pv_ctx *), GFP_KERNEL); | |
1946 | if (!ctx->tun) | |
1947 | return -ENOMEM; | |
1948 | ||
1949 | ctx->dev = dev; | |
1950 | ctx->port = port; | |
1951 | ctx->ib_dev = &dev->ib_dev; | |
1952 | ||
449fc488 MB |
1953 | for (i = 0; |
1954 | i < min(dev->dev->caps.sqp_demux, (u16)(dev->dev->num_vfs + 1)); | |
1955 | i++) { | |
1956 | struct mlx4_active_ports actv_ports = | |
1957 | mlx4_get_active_ports(dev->dev, i); | |
1958 | ||
1959 | if (!test_bit(port - 1, actv_ports.ports)) | |
1960 | continue; | |
1961 | ||
fc06573d JM |
1962 | ret = alloc_pv_object(dev, i, port, &ctx->tun[i]); |
1963 | if (ret) { | |
1964 | ret = -ENOMEM; | |
b9c5d6a6 | 1965 | goto err_mcg; |
fc06573d JM |
1966 | } |
1967 | } | |
1968 | ||
b9c5d6a6 OD |
1969 | ret = mlx4_ib_mcg_port_init(ctx); |
1970 | if (ret) { | |
1971 | pr_err("Failed initializing mcg para-virt (%d)\n", ret); | |
1972 | goto err_mcg; | |
1973 | } | |
1974 | ||
fc06573d JM |
1975 | snprintf(name, sizeof name, "mlx4_ibt%d", port); |
1976 | ctx->wq = create_singlethread_workqueue(name); | |
1977 | if (!ctx->wq) { | |
1978 | pr_err("Failed to create tunnelling WQ for port %d\n", port); | |
1979 | ret = -ENOMEM; | |
1980 | goto err_wq; | |
1981 | } | |
1982 | ||
1983 | snprintf(name, sizeof name, "mlx4_ibud%d", port); | |
1984 | ctx->ud_wq = create_singlethread_workqueue(name); | |
1985 | if (!ctx->ud_wq) { | |
1986 | pr_err("Failed to create up/down WQ for port %d\n", port); | |
1987 | ret = -ENOMEM; | |
1988 | goto err_udwq; | |
1989 | } | |
1990 | ||
1991 | return 0; | |
1992 | ||
1993 | err_udwq: | |
1994 | destroy_workqueue(ctx->wq); | |
1995 | ctx->wq = NULL; | |
1996 | ||
1997 | err_wq: | |
b9c5d6a6 OD |
1998 | mlx4_ib_mcg_port_cleanup(ctx, 1); |
1999 | err_mcg: | |
fc06573d JM |
2000 | for (i = 0; i < dev->dev->caps.sqp_demux; i++) |
2001 | free_pv_object(dev, i, port); | |
2002 | kfree(ctx->tun); | |
2003 | ctx->tun = NULL; | |
2004 | return ret; | |
2005 | } | |
2006 | ||
2007 | static void mlx4_ib_free_sqp_ctx(struct mlx4_ib_demux_pv_ctx *sqp_ctx) | |
2008 | { | |
2009 | if (sqp_ctx->state > DEMUX_PV_STATE_DOWN) { | |
2010 | sqp_ctx->state = DEMUX_PV_STATE_DOWNING; | |
2011 | flush_workqueue(sqp_ctx->wq); | |
2012 | if (sqp_ctx->has_smi) { | |
2013 | ib_destroy_qp(sqp_ctx->qp[0].qp); | |
2014 | sqp_ctx->qp[0].qp = NULL; | |
2015 | mlx4_ib_free_pv_qp_bufs(sqp_ctx, IB_QPT_SMI, 0); | |
2016 | } | |
2017 | ib_destroy_qp(sqp_ctx->qp[1].qp); | |
2018 | sqp_ctx->qp[1].qp = NULL; | |
2019 | mlx4_ib_free_pv_qp_bufs(sqp_ctx, IB_QPT_GSI, 0); | |
2020 | ib_dereg_mr(sqp_ctx->mr); | |
2021 | sqp_ctx->mr = NULL; | |
2022 | ib_dealloc_pd(sqp_ctx->pd); | |
2023 | sqp_ctx->pd = NULL; | |
2024 | ib_destroy_cq(sqp_ctx->cq); | |
2025 | sqp_ctx->cq = NULL; | |
2026 | sqp_ctx->state = DEMUX_PV_STATE_DOWN; | |
2027 | } | |
2028 | } | |
2029 | ||
2030 | static void mlx4_ib_free_demux_ctx(struct mlx4_ib_demux_ctx *ctx) | |
2031 | { | |
2032 | int i; | |
2033 | if (ctx) { | |
2034 | struct mlx4_ib_dev *dev = to_mdev(ctx->ib_dev); | |
b9c5d6a6 | 2035 | mlx4_ib_mcg_port_cleanup(ctx, 1); |
fc06573d JM |
2036 | for (i = 0; i < dev->dev->caps.sqp_demux; i++) { |
2037 | if (!ctx->tun[i]) | |
2038 | continue; | |
2039 | if (ctx->tun[i]->state > DEMUX_PV_STATE_DOWN) | |
2040 | ctx->tun[i]->state = DEMUX_PV_STATE_DOWNING; | |
2041 | } | |
2042 | flush_workqueue(ctx->wq); | |
2043 | for (i = 0; i < dev->dev->caps.sqp_demux; i++) { | |
2044 | destroy_pv_resources(dev, i, ctx->port, ctx->tun[i], 0); | |
2045 | free_pv_object(dev, i, ctx->port); | |
2046 | } | |
2047 | kfree(ctx->tun); | |
2048 | destroy_workqueue(ctx->ud_wq); | |
2049 | destroy_workqueue(ctx->wq); | |
2050 | } | |
2051 | } | |
2052 | ||
2053 | static void mlx4_ib_master_tunnels(struct mlx4_ib_dev *dev, int do_init) | |
2054 | { | |
2055 | int i; | |
2056 | ||
2057 | if (!mlx4_is_master(dev->dev)) | |
2058 | return; | |
2059 | /* initialize or tear down tunnel QPs for the master */ | |
2060 | for (i = 0; i < dev->dev->caps.num_ports; i++) | |
2061 | mlx4_ib_tunnels_update(dev, mlx4_master_func_num(dev->dev), i + 1, do_init); | |
2062 | return; | |
2063 | } | |
2064 | ||
2065 | int mlx4_ib_init_sriov(struct mlx4_ib_dev *dev) | |
2066 | { | |
2067 | int i = 0; | |
2068 | int err; | |
2069 | ||
2070 | if (!mlx4_is_mfunc(dev->dev)) | |
2071 | return 0; | |
2072 | ||
2073 | dev->sriov.is_going_down = 0; | |
2074 | spin_lock_init(&dev->sriov.going_down_lock); | |
3cf69cc8 | 2075 | mlx4_ib_cm_paravirt_init(dev); |
fc06573d JM |
2076 | |
2077 | mlx4_ib_warn(&dev->ib_dev, "multi-function enabled\n"); | |
2078 | ||
2079 | if (mlx4_is_slave(dev->dev)) { | |
2080 | mlx4_ib_warn(&dev->ib_dev, "operating in qp1 tunnel mode\n"); | |
2081 | return 0; | |
2082 | } | |
2083 | ||
afa8fd1d JM |
2084 | for (i = 0; i < dev->dev->caps.sqp_demux; i++) { |
2085 | if (i == mlx4_master_func_num(dev->dev)) | |
2086 | mlx4_put_slave_node_guid(dev->dev, i, dev->ib_dev.node_guid); | |
2087 | else | |
2088 | mlx4_put_slave_node_guid(dev->dev, i, mlx4_ib_gen_node_guid()); | |
2089 | } | |
2090 | ||
a0c64a17 JM |
2091 | err = mlx4_ib_init_alias_guid_service(dev); |
2092 | if (err) { | |
2093 | mlx4_ib_warn(&dev->ib_dev, "Failed init alias guid process.\n"); | |
2094 | goto paravirt_err; | |
2095 | } | |
c1e7e466 JM |
2096 | err = mlx4_ib_device_register_sysfs(dev); |
2097 | if (err) { | |
2098 | mlx4_ib_warn(&dev->ib_dev, "Failed to register sysfs\n"); | |
2099 | goto sysfs_err; | |
2100 | } | |
a0c64a17 | 2101 | |
fc06573d JM |
2102 | mlx4_ib_warn(&dev->ib_dev, "initializing demux service for %d qp1 clients\n", |
2103 | dev->dev->caps.sqp_demux); | |
2104 | for (i = 0; i < dev->num_ports; i++) { | |
a0c64a17 JM |
2105 | union ib_gid gid; |
2106 | err = __mlx4_ib_query_gid(&dev->ib_dev, i + 1, 0, &gid, 1); | |
2107 | if (err) | |
2108 | goto demux_err; | |
2109 | dev->sriov.demux[i].guid_cache[0] = gid.global.interface_id; | |
fc06573d JM |
2110 | err = alloc_pv_object(dev, mlx4_master_func_num(dev->dev), i + 1, |
2111 | &dev->sriov.sqps[i]); | |
2112 | if (err) | |
2113 | goto demux_err; | |
2114 | err = mlx4_ib_alloc_demux_ctx(dev, &dev->sriov.demux[i], i + 1); | |
2115 | if (err) | |
cab66d12 | 2116 | goto free_pv; |
fc06573d JM |
2117 | } |
2118 | mlx4_ib_master_tunnels(dev, 1); | |
2119 | return 0; | |
2120 | ||
cab66d12 DC |
2121 | free_pv: |
2122 | free_pv_object(dev, mlx4_master_func_num(dev->dev), i + 1); | |
fc06573d | 2123 | demux_err: |
cab66d12 | 2124 | while (--i >= 0) { |
fc06573d JM |
2125 | free_pv_object(dev, mlx4_master_func_num(dev->dev), i + 1); |
2126 | mlx4_ib_free_demux_ctx(&dev->sriov.demux[i]); | |
fc06573d | 2127 | } |
c1e7e466 JM |
2128 | mlx4_ib_device_unregister_sysfs(dev); |
2129 | ||
2130 | sysfs_err: | |
a0c64a17 JM |
2131 | mlx4_ib_destroy_alias_guid_service(dev); |
2132 | ||
2133 | paravirt_err: | |
3cf69cc8 | 2134 | mlx4_ib_cm_paravirt_clean(dev, -1); |
fc06573d JM |
2135 | |
2136 | return err; | |
2137 | } | |
2138 | ||
2139 | void mlx4_ib_close_sriov(struct mlx4_ib_dev *dev) | |
2140 | { | |
2141 | int i; | |
2142 | unsigned long flags; | |
2143 | ||
2144 | if (!mlx4_is_mfunc(dev->dev)) | |
2145 | return; | |
2146 | ||
2147 | spin_lock_irqsave(&dev->sriov.going_down_lock, flags); | |
2148 | dev->sriov.is_going_down = 1; | |
2149 | spin_unlock_irqrestore(&dev->sriov.going_down_lock, flags); | |
3cf69cc8 | 2150 | if (mlx4_is_master(dev->dev)) { |
fc06573d JM |
2151 | for (i = 0; i < dev->num_ports; i++) { |
2152 | flush_workqueue(dev->sriov.demux[i].ud_wq); | |
2153 | mlx4_ib_free_sqp_ctx(dev->sriov.sqps[i]); | |
2154 | kfree(dev->sriov.sqps[i]); | |
2155 | dev->sriov.sqps[i] = NULL; | |
2156 | mlx4_ib_free_demux_ctx(&dev->sriov.demux[i]); | |
2157 | } | |
3cf69cc8 AV |
2158 | |
2159 | mlx4_ib_cm_paravirt_clean(dev, -1); | |
a0c64a17 | 2160 | mlx4_ib_destroy_alias_guid_service(dev); |
c1e7e466 | 2161 | mlx4_ib_device_unregister_sysfs(dev); |
3cf69cc8 | 2162 | } |
fc06573d | 2163 | } |