2 * Copyright (c) 2007 Cisco Systems, Inc. All rights reserved.
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:
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
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.
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
33 #include <rdma/ib_mad.h>
34 #include <rdma/ib_smi.h>
35 #include <rdma/ib_sa.h>
36 #include <rdma/ib_cache.h>
38 #include <linux/random.h>
39 #include <linux/mlx4/cmd.h>
40 #include <linux/gfp.h>
41 #include <rdma/ib_pma.h>
46 MLX4_IB_VENDOR_CLASS1
= 0x9,
47 MLX4_IB_VENDOR_CLASS2
= 0xa
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)
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)
58 /* Port mgmt change event handling */
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)
67 struct mlx4_mad_rcv_buf
{
72 struct mlx4_mad_snd_buf
{
76 struct mlx4_tunnel_mad
{
78 struct mlx4_ib_tunnel_header hdr
;
82 struct mlx4_rcv_tunnel_mad
{
83 struct mlx4_rcv_tunnel_hdr hdr
;
88 static void handle_client_rereg_event(struct mlx4_ib_dev
*dev
, u8 port_num
);
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
);
93 __be64
mlx4_ib_gen_node_guid(void)
95 #define NODE_GUID_HI ((u64) (((u64)IB_OPENIB_OUI) << 40))
96 return cpu_to_be64(NODE_GUID_HI
| prandom_u32());
99 __be64
mlx4_ib_get_new_demux_tid(struct mlx4_ib_demux_ctx
*ctx
)
101 return cpu_to_be64(atomic_inc_return(&ctx
->tid
)) |
102 cpu_to_be64(0xff00000000000000LL
);
105 int mlx4_MAD_IFC(struct mlx4_ib_dev
*dev
, int mad_ifc_flags
,
106 int port
, struct ib_wc
*in_wc
, struct ib_grh
*in_grh
,
107 void *in_mad
, void *response_mad
)
109 struct mlx4_cmd_mailbox
*inmailbox
, *outmailbox
;
112 u32 in_modifier
= port
;
115 inmailbox
= mlx4_alloc_cmd_mailbox(dev
->dev
);
116 if (IS_ERR(inmailbox
))
117 return PTR_ERR(inmailbox
);
118 inbox
= inmailbox
->buf
;
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
);
126 memcpy(inbox
, in_mad
, 256);
129 * Key check traps can't be generated unless we have in_wc to
130 * tell us where to send the trap.
132 if ((mad_ifc_flags
& MLX4_MAD_IFC_IGNORE_MKEY
) || !in_wc
)
134 if ((mad_ifc_flags
& MLX4_MAD_IFC_IGNORE_BKEY
) || !in_wc
)
136 if (mlx4_is_mfunc(dev
->dev
) &&
137 (mad_ifc_flags
& MLX4_MAD_IFC_NET_VIEW
|| in_wc
))
153 memset(inbox
+ 256, 0, 256);
154 ext_info
= inbox
+ 256;
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
);
164 memcpy(ext_info
->grh
, in_grh
, 40);
168 in_modifier
|= in_wc
->slid
<< 16;
171 err
= mlx4_cmd_box(dev
->dev
, inmailbox
->dma
, outmailbox
->dma
, in_modifier
,
172 mlx4_is_master(dev
->dev
) ? (op_modifier
& ~0x8) : op_modifier
,
173 MLX4_CMD_MAD_IFC
, MLX4_CMD_TIME_CLASS_C
,
174 (op_modifier
& 0x8) ? MLX4_CMD_NATIVE
: MLX4_CMD_WRAPPED
);
177 memcpy(response_mad
, outmailbox
->buf
, 256);
179 mlx4_free_cmd_mailbox(dev
->dev
, inmailbox
);
180 mlx4_free_cmd_mailbox(dev
->dev
, outmailbox
);
185 static void update_sm_ah(struct mlx4_ib_dev
*dev
, u8 port_num
, u16 lid
, u8 sl
)
187 struct ib_ah
*new_ah
;
188 struct ib_ah_attr ah_attr
;
191 if (!dev
->send_agent
[port_num
- 1][0])
194 memset(&ah_attr
, 0, sizeof ah_attr
);
197 ah_attr
.port_num
= port_num
;
199 new_ah
= ib_create_ah(dev
->send_agent
[port_num
- 1][0]->qp
->pd
,
204 spin_lock_irqsave(&dev
->sm_lock
, flags
);
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
;
208 spin_unlock_irqrestore(&dev
->sm_lock
, flags
);
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.
215 static void smp_snoop(struct ib_device
*ibdev
, u8 port_num
, struct ib_mad
*mad
,
218 struct ib_port_info
*pinfo
;
221 u32 bn
, pkey_change_bitmap
;
225 struct mlx4_ib_dev
*dev
= to_mdev(ibdev
);
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
) &&
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
);
234 update_sm_ah(dev
, port_num
,
235 be16_to_cpu(pinfo
->sm_lid
),
236 pinfo
->neighbormtu_mastersmsl
& 0xf);
238 if (pinfo
->clientrereg_resv_subnetto
& 0x80)
239 handle_client_rereg_event(dev
, port_num
);
242 handle_lid_change_event(dev
, port_num
);
245 case IB_SMP_ATTR_PKEY_TABLE
:
246 if (!mlx4_is_mfunc(dev
->dev
)) {
247 mlx4_ib_dispatch_event(dev
, port_num
,
248 IB_EVENT_PKEY_CHANGE
);
252 /* at this point, we are running in the master.
253 * Slaves do not receive SMPs.
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
]);
268 pr_debug("PKEY Change event: port=%d, "
269 "block=0x%x, change_bitmap=0x%x\n",
270 port_num
, bn
, pkey_change_bitmap
);
272 if (pkey_change_bitmap
) {
273 mlx4_ib_dispatch_event(dev
, port_num
,
274 IB_EVENT_PKEY_CHANGE
);
275 if (!dev
->sriov
.is_going_down
)
276 __propagate_pkey_ev(dev
, port_num
, bn
,
281 case IB_SMP_ATTR_GUID_INFO
:
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
);
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
));
302 static void __propagate_pkey_ev(struct mlx4_ib_dev
*dev
, int port_num
,
303 int block
, u32 change_bitmap
)
305 int i
, ix
, slave
, err
;
308 for (slave
= 0; slave
< dev
->dev
->caps
.sqp_demux
; slave
++) {
309 if (slave
== mlx4_master_func_num(dev
->dev
))
311 if (!mlx4_is_slave_active(dev
->dev
, slave
))
315 for (i
= 0; i
< 32; i
++) {
316 if (!(change_bitmap
& (1 << i
)))
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
);
336 static void node_desc_override(struct ib_device
*dev
,
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
) {
345 spin_lock_irqsave(&to_mdev(dev
)->sm_lock
, flags
);
346 memcpy(((struct ib_smp
*) mad
)->data
, dev
->node_desc
, 64);
347 spin_unlock_irqrestore(&to_mdev(dev
)->sm_lock
, flags
);
351 static void forward_trap(struct mlx4_ib_dev
*dev
, u8 port_num
, struct ib_mad
*mad
)
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
];
360 send_buf
= ib_create_send_mad(agent
, qpn
, 0, 0, IB_MGMT_MAD_HDR
,
361 IB_MGMT_MAD_DATA
, GFP_ATOMIC
);
362 if (IS_ERR(send_buf
))
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).
370 spin_lock_irqsave(&dev
->sm_lock
, flags
);
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
);
376 spin_unlock_irqrestore(&dev
->sm_lock
, flags
);
379 ib_free_send_mad(send_buf
);
383 static int mlx4_ib_demux_sa_handler(struct ib_device
*ibdev
, int port
, int slave
,
384 struct ib_sa_mad
*sa_mad
)
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
);
399 int mlx4_ib_find_real_gid(struct ib_device
*ibdev
, u8 port
, __be64 guid
)
401 struct mlx4_ib_dev
*dev
= to_mdev(ibdev
);
404 for (i
= 0; i
< dev
->dev
->caps
.sqp_demux
; i
++) {
405 if (dev
->sriov
.demux
[port
- 1].guid_cache
[i
] == guid
)
412 static int find_slave_port_pkey_ix(struct mlx4_ib_dev
*dev
, int slave
,
413 u8 port
, u16 pkey
, u16
*ix
)
416 u8 unassigned_pkey_ix
, pkey_ix
, partial_ix
= 0xFF;
419 if (slave
== mlx4_master_func_num(dev
->dev
))
420 return ib_find_cached_pkey(&dev
->ib_dev
, port
, pkey
, ix
);
422 unassigned_pkey_ix
= dev
->dev
->phys_caps
.pkey_phys_table_len
[port
] - 1;
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
)
428 pkey_ix
= dev
->pkeys
.virt2phys_pkey
[slave
][port
- 1][i
];
430 ret
= ib_get_cached_pkey(&dev
->ib_dev
, port
, pkey_ix
, &slot_pkey
);
433 if ((slot_pkey
& 0x7FFF) == (pkey
& 0x7FFF)) {
434 if (slot_pkey
& 0x8000) {
438 /* take first partial pkey index found */
439 if (partial_ix
== 0xFF)
440 partial_ix
= pkey_ix
;
445 if (partial_ix
< 0xFF) {
446 *ix
= (u16
) partial_ix
;
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
)
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
;
464 struct ib_qp
*src_qp
= NULL
;
465 unsigned tun_tx_ix
= 0;
470 u8 is_eth
= dev
->dev
->caps
.port_type
[port
] == MLX4_PORT_TYPE_ETH
;
472 if (dest_qpt
> IB_QPT_GSI
)
475 tun_ctx
= dev
->sriov
.demux
[port
-1].tun
[slave
];
477 /* check if proxy qp created */
478 if (!tun_ctx
|| tun_ctx
->state
!= DEMUX_PV_STATE_ACTIVE
)
481 /* QP0 forwarding only for Dom0 */
482 if (!dest_qpt
&& (mlx4_master_func_num(dev
->dev
) != slave
))
486 tun_qp
= &tun_ctx
->qp
[0];
488 tun_qp
= &tun_ctx
->qp
[1];
490 /* compute P_Key index to put in tunnel header for slave */
493 ret
= ib_get_cached_pkey(&dev
->ib_dev
, port
, wc
->pkey_index
, &cached_pkey
);
497 ret
= find_slave_port_pkey_ix(dev
, slave
, port
, cached_pkey
, &pkey_ix
);
500 tun_pkey_ix
= pkey_ix
;
502 tun_pkey_ix
= dev
->pkeys
.virt2phys_pkey
[slave
][port
- 1][0];
504 dqpn
= dev
->dev
->phys_caps
.base_proxy_sqpn
+ 8 * slave
+ port
+ (dest_qpt
* 2) - 1;
506 /* get tunnel tx data buf for slave */
509 /* create ah. Just need an empty one with the port num for the post send.
510 * The driver will set the force loopback bit in post_send */
511 memset(&attr
, 0, sizeof attr
);
512 attr
.port_num
= port
;
514 memcpy(&attr
.grh
.dgid
.raw
[0], &grh
->dgid
.raw
[0], 16);
515 attr
.ah_flags
= IB_AH_GRH
;
517 ah
= ib_create_ah(tun_ctx
->pd
, &attr
);
521 /* allocate tunnel tx buf after pass failure returns */
522 spin_lock(&tun_qp
->tx_lock
);
523 if (tun_qp
->tx_ix_head
- tun_qp
->tx_ix_tail
>=
524 (MLX4_NUM_TUNNEL_BUFS
- 1))
527 tun_tx_ix
= (++tun_qp
->tx_ix_head
) & (MLX4_NUM_TUNNEL_BUFS
- 1);
528 spin_unlock(&tun_qp
->tx_lock
);
532 tun_mad
= (struct mlx4_rcv_tunnel_mad
*) (tun_qp
->tx_ring
[tun_tx_ix
].buf
.addr
);
533 if (tun_qp
->tx_ring
[tun_tx_ix
].ah
)
534 ib_destroy_ah(tun_qp
->tx_ring
[tun_tx_ix
].ah
);
535 tun_qp
->tx_ring
[tun_tx_ix
].ah
= ah
;
536 ib_dma_sync_single_for_cpu(&dev
->ib_dev
,
537 tun_qp
->tx_ring
[tun_tx_ix
].buf
.map
,
538 sizeof (struct mlx4_rcv_tunnel_mad
),
541 /* copy over to tunnel buffer */
543 memcpy(&tun_mad
->grh
, grh
, sizeof *grh
);
544 memcpy(&tun_mad
->mad
, mad
, sizeof *mad
);
546 /* adjust tunnel data */
547 tun_mad
->hdr
.pkey_index
= cpu_to_be16(tun_pkey_ix
);
548 tun_mad
->hdr
.flags_src_qp
= cpu_to_be32(wc
->src_qp
& 0xFFFFFF);
549 tun_mad
->hdr
.g_ml_path
= (grh
&& (wc
->wc_flags
& IB_WC_GRH
)) ? 0x80 : 0;
553 if (mlx4_get_slave_default_vlan(dev
->dev
, port
, slave
, &vlan
,
556 if (vlan
!= wc
->vlan_id
)
557 /* Packet vlan is not the VST-assigned vlan.
562 /* Remove the vlan tag before forwarding
563 * the packet to the VF.
570 tun_mad
->hdr
.sl_vid
= cpu_to_be16(vlan
);
571 memcpy((char *)&tun_mad
->hdr
.mac_31_0
, &(wc
->smac
[0]), 4);
572 memcpy((char *)&tun_mad
->hdr
.slid_mac_47_32
, &(wc
->smac
[4]), 2);
574 tun_mad
->hdr
.sl_vid
= cpu_to_be16(((u16
)(wc
->sl
)) << 12);
575 tun_mad
->hdr
.slid_mac_47_32
= cpu_to_be16(wc
->slid
);
578 ib_dma_sync_single_for_device(&dev
->ib_dev
,
579 tun_qp
->tx_ring
[tun_tx_ix
].buf
.map
,
580 sizeof (struct mlx4_rcv_tunnel_mad
),
583 list
.addr
= tun_qp
->tx_ring
[tun_tx_ix
].buf
.map
;
584 list
.length
= sizeof (struct mlx4_rcv_tunnel_mad
);
585 list
.lkey
= tun_ctx
->mr
->lkey
;
588 wr
.wr
.ud
.port_num
= port
;
589 wr
.wr
.ud
.remote_qkey
= IB_QP_SET_QKEY
;
590 wr
.wr
.ud
.remote_qpn
= dqpn
;
592 wr
.wr_id
= ((u64
) tun_tx_ix
) | MLX4_TUN_SET_WRID_QPN(dest_qpt
);
595 wr
.opcode
= IB_WR_SEND
;
596 wr
.send_flags
= IB_SEND_SIGNALED
;
598 ret
= ib_post_send(src_qp
, &wr
, &bad_wr
);
605 static int mlx4_ib_demux_mad(struct ib_device
*ibdev
, u8 port
,
606 struct ib_wc
*wc
, struct ib_grh
*grh
,
609 struct mlx4_ib_dev
*dev
= to_mdev(ibdev
);
615 if (rdma_port_get_link_layer(ibdev
, port
) == IB_LINK_LAYER_INFINIBAND
)
621 if (!(wc
->wc_flags
& IB_WC_GRH
)) {
622 mlx4_ib_warn(ibdev
, "RoCE grh not present.\n");
625 if (mad
->mad_hdr
.mgmt_class
!= IB_MGMT_CLASS_CM
) {
626 mlx4_ib_warn(ibdev
, "RoCE mgmt class is not CM\n");
629 if (mlx4_get_slave_from_roce_gid(dev
->dev
, port
, grh
->dgid
.raw
, &slave
)) {
630 mlx4_ib_warn(ibdev
, "failed matching grh\n");
633 if (slave
>= dev
->dev
->caps
.sqp_demux
) {
634 mlx4_ib_warn(ibdev
, "slave id: %d is bigger than allowed:%d\n",
635 slave
, dev
->dev
->caps
.sqp_demux
);
639 if (mlx4_ib_demux_cm_handler(ibdev
, port
, NULL
, mad
))
642 err
= mlx4_ib_send_to_slave(dev
, slave
, port
, wc
->qp
->qp_type
, wc
, grh
, mad
);
644 pr_debug("failed sending to slave %d via tunnel qp (%d)\n",
649 /* Initially assume that this mad is for us */
650 slave
= mlx4_master_func_num(dev
->dev
);
652 /* See if the slave id is encoded in a response mad */
653 if (mad
->mad_hdr
.method
& 0x80) {
654 slave_id
= (u8
*) &mad
->mad_hdr
.tid
;
656 if (slave
!= 255) /*255 indicates the dom0*/
657 *slave_id
= 0; /* remap tid */
660 /* If a grh is present, we demux according to it */
661 if (wc
->wc_flags
& IB_WC_GRH
) {
662 slave
= mlx4_ib_find_real_gid(ibdev
, port
, grh
->dgid
.global
.interface_id
);
664 mlx4_ib_warn(ibdev
, "failed matching grh\n");
668 /* Class-specific handling */
669 switch (mad
->mad_hdr
.mgmt_class
) {
670 case IB_MGMT_CLASS_SUBN_ADM
:
671 if (mlx4_ib_demux_sa_handler(ibdev
, port
, slave
,
672 (struct ib_sa_mad
*) mad
))
675 case IB_MGMT_CLASS_CM
:
676 if (mlx4_ib_demux_cm_handler(ibdev
, port
, &slave
, mad
))
679 case IB_MGMT_CLASS_DEVICE_MGMT
:
680 if (mad
->mad_hdr
.method
!= IB_MGMT_METHOD_GET_RESP
)
684 /* Drop unsupported classes for slaves in tunnel mode */
685 if (slave
!= mlx4_master_func_num(dev
->dev
)) {
686 pr_debug("dropping unsupported ingress mad from class:%d "
687 "for slave:%d\n", mad
->mad_hdr
.mgmt_class
, slave
);
691 /*make sure that no slave==255 was not handled yet.*/
692 if (slave
>= dev
->dev
->caps
.sqp_demux
) {
693 mlx4_ib_warn(ibdev
, "slave id: %d is bigger than allowed:%d\n",
694 slave
, dev
->dev
->caps
.sqp_demux
);
698 err
= mlx4_ib_send_to_slave(dev
, slave
, port
, wc
->qp
->qp_type
, wc
, grh
, mad
);
700 pr_debug("failed sending to slave %d via tunnel qp (%d)\n",
705 static int ib_process_mad(struct ib_device
*ibdev
, int mad_flags
, u8 port_num
,
706 struct ib_wc
*in_wc
, struct ib_grh
*in_grh
,
707 struct ib_mad
*in_mad
, struct ib_mad
*out_mad
)
709 u16 slid
, prev_lid
= 0;
711 struct ib_port_attr pattr
;
713 if (in_wc
&& in_wc
->qp
->qp_num
) {
714 pr_debug("received MAD: slid:%d sqpn:%d "
715 "dlid_bits:%d dqpn:%d wc_flags:0x%x, cls %x, mtd %x, atr %x\n",
716 in_wc
->slid
, in_wc
->src_qp
,
717 in_wc
->dlid_path_bits
,
720 in_mad
->mad_hdr
.mgmt_class
, in_mad
->mad_hdr
.method
,
721 be16_to_cpu(in_mad
->mad_hdr
.attr_id
));
722 if (in_wc
->wc_flags
& IB_WC_GRH
) {
723 pr_debug("sgid_hi:0x%016llx sgid_lo:0x%016llx\n",
724 be64_to_cpu(in_grh
->sgid
.global
.subnet_prefix
),
725 be64_to_cpu(in_grh
->sgid
.global
.interface_id
));
726 pr_debug("dgid_hi:0x%016llx dgid_lo:0x%016llx\n",
727 be64_to_cpu(in_grh
->dgid
.global
.subnet_prefix
),
728 be64_to_cpu(in_grh
->dgid
.global
.interface_id
));
732 slid
= in_wc
? in_wc
->slid
: be16_to_cpu(IB_LID_PERMISSIVE
);
734 if (in_mad
->mad_hdr
.method
== IB_MGMT_METHOD_TRAP
&& slid
== 0) {
735 forward_trap(to_mdev(ibdev
), port_num
, in_mad
);
736 return IB_MAD_RESULT_SUCCESS
| IB_MAD_RESULT_CONSUMED
;
739 if (in_mad
->mad_hdr
.mgmt_class
== IB_MGMT_CLASS_SUBN_LID_ROUTED
||
740 in_mad
->mad_hdr
.mgmt_class
== IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE
) {
741 if (in_mad
->mad_hdr
.method
!= IB_MGMT_METHOD_GET
&&
742 in_mad
->mad_hdr
.method
!= IB_MGMT_METHOD_SET
&&
743 in_mad
->mad_hdr
.method
!= IB_MGMT_METHOD_TRAP_REPRESS
)
744 return IB_MAD_RESULT_SUCCESS
;
747 * Don't process SMInfo queries -- the SMA can't handle them.
749 if (in_mad
->mad_hdr
.attr_id
== IB_SMP_ATTR_SM_INFO
)
750 return IB_MAD_RESULT_SUCCESS
;
751 } else if (in_mad
->mad_hdr
.mgmt_class
== IB_MGMT_CLASS_PERF_MGMT
||
752 in_mad
->mad_hdr
.mgmt_class
== MLX4_IB_VENDOR_CLASS1
||
753 in_mad
->mad_hdr
.mgmt_class
== MLX4_IB_VENDOR_CLASS2
||
754 in_mad
->mad_hdr
.mgmt_class
== IB_MGMT_CLASS_CONG_MGMT
) {
755 if (in_mad
->mad_hdr
.method
!= IB_MGMT_METHOD_GET
&&
756 in_mad
->mad_hdr
.method
!= IB_MGMT_METHOD_SET
)
757 return IB_MAD_RESULT_SUCCESS
;
759 return IB_MAD_RESULT_SUCCESS
;
761 if ((in_mad
->mad_hdr
.mgmt_class
== IB_MGMT_CLASS_SUBN_LID_ROUTED
||
762 in_mad
->mad_hdr
.mgmt_class
== IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE
) &&
763 in_mad
->mad_hdr
.method
== IB_MGMT_METHOD_SET
&&
764 in_mad
->mad_hdr
.attr_id
== IB_SMP_ATTR_PORT_INFO
&&
765 !ib_query_port(ibdev
, port_num
, &pattr
))
766 prev_lid
= pattr
.lid
;
768 err
= mlx4_MAD_IFC(to_mdev(ibdev
),
769 (mad_flags
& IB_MAD_IGNORE_MKEY
? MLX4_MAD_IFC_IGNORE_MKEY
: 0) |
770 (mad_flags
& IB_MAD_IGNORE_BKEY
? MLX4_MAD_IFC_IGNORE_BKEY
: 0) |
771 MLX4_MAD_IFC_NET_VIEW
,
772 port_num
, in_wc
, in_grh
, in_mad
, out_mad
);
774 return IB_MAD_RESULT_FAILURE
;
776 if (!out_mad
->mad_hdr
.status
) {
777 if (!(to_mdev(ibdev
)->dev
->caps
.flags
& MLX4_DEV_CAP_FLAG_PORT_MNG_CHG_EV
))
778 smp_snoop(ibdev
, port_num
, in_mad
, prev_lid
);
779 /* slaves get node desc from FW */
780 if (!mlx4_is_slave(to_mdev(ibdev
)->dev
))
781 node_desc_override(ibdev
, out_mad
);
784 /* set return bit in status of directed route responses */
785 if (in_mad
->mad_hdr
.mgmt_class
== IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE
)
786 out_mad
->mad_hdr
.status
|= cpu_to_be16(1 << 15);
788 if (in_mad
->mad_hdr
.method
== IB_MGMT_METHOD_TRAP_REPRESS
)
789 /* no response for trap repress */
790 return IB_MAD_RESULT_SUCCESS
| IB_MAD_RESULT_CONSUMED
;
792 return IB_MAD_RESULT_SUCCESS
| IB_MAD_RESULT_REPLY
;
795 static void edit_counter(struct mlx4_counter
*cnt
,
796 struct ib_pma_portcounters
*pma_cnt
)
798 pma_cnt
->port_xmit_data
= cpu_to_be32((be64_to_cpu(cnt
->tx_bytes
)>>2));
799 pma_cnt
->port_rcv_data
= cpu_to_be32((be64_to_cpu(cnt
->rx_bytes
)>>2));
800 pma_cnt
->port_xmit_packets
= cpu_to_be32(be64_to_cpu(cnt
->tx_frames
));
801 pma_cnt
->port_rcv_packets
= cpu_to_be32(be64_to_cpu(cnt
->rx_frames
));
804 static int iboe_process_mad(struct ib_device
*ibdev
, int mad_flags
, u8 port_num
,
805 struct ib_wc
*in_wc
, struct ib_grh
*in_grh
,
806 struct ib_mad
*in_mad
, struct ib_mad
*out_mad
)
808 struct mlx4_cmd_mailbox
*mailbox
;
809 struct mlx4_ib_dev
*dev
= to_mdev(ibdev
);
811 u32 inmod
= dev
->counters
[port_num
- 1] & 0xffff;
814 if (in_mad
->mad_hdr
.mgmt_class
!= IB_MGMT_CLASS_PERF_MGMT
)
817 mailbox
= mlx4_alloc_cmd_mailbox(dev
->dev
);
819 return IB_MAD_RESULT_FAILURE
;
821 err
= mlx4_cmd_box(dev
->dev
, 0, mailbox
->dma
, inmod
, 0,
822 MLX4_CMD_QUERY_IF_STAT
, MLX4_CMD_TIME_CLASS_C
,
825 err
= IB_MAD_RESULT_FAILURE
;
827 memset(out_mad
->data
, 0, sizeof out_mad
->data
);
828 mode
= ((struct mlx4_counter
*)mailbox
->buf
)->counter_mode
;
829 switch (mode
& 0xf) {
831 edit_counter(mailbox
->buf
,
832 (void *)(out_mad
->data
+ 40));
833 err
= IB_MAD_RESULT_SUCCESS
| IB_MAD_RESULT_REPLY
;
836 err
= IB_MAD_RESULT_FAILURE
;
840 mlx4_free_cmd_mailbox(dev
->dev
, mailbox
);
845 int mlx4_ib_process_mad(struct ib_device
*ibdev
, int mad_flags
, u8 port_num
,
846 struct ib_wc
*in_wc
, struct ib_grh
*in_grh
,
847 struct ib_mad
*in_mad
, struct ib_mad
*out_mad
)
849 switch (rdma_port_get_link_layer(ibdev
, port_num
)) {
850 case IB_LINK_LAYER_INFINIBAND
:
851 return ib_process_mad(ibdev
, mad_flags
, port_num
, in_wc
,
852 in_grh
, in_mad
, out_mad
);
853 case IB_LINK_LAYER_ETHERNET
:
854 return iboe_process_mad(ibdev
, mad_flags
, port_num
, in_wc
,
855 in_grh
, in_mad
, out_mad
);
861 static void send_handler(struct ib_mad_agent
*agent
,
862 struct ib_mad_send_wc
*mad_send_wc
)
864 if (mad_send_wc
->send_buf
->context
[0])
865 ib_destroy_ah(mad_send_wc
->send_buf
->context
[0]);
866 ib_free_send_mad(mad_send_wc
->send_buf
);
869 int mlx4_ib_mad_init(struct mlx4_ib_dev
*dev
)
871 struct ib_mad_agent
*agent
;
874 enum rdma_link_layer ll
;
876 for (p
= 0; p
< dev
->num_ports
; ++p
) {
877 ll
= rdma_port_get_link_layer(&dev
->ib_dev
, p
+ 1);
878 for (q
= 0; q
<= 1; ++q
) {
879 if (ll
== IB_LINK_LAYER_INFINIBAND
) {
880 agent
= ib_register_mad_agent(&dev
->ib_dev
, p
+ 1,
881 q
? IB_QPT_GSI
: IB_QPT_SMI
,
882 NULL
, 0, send_handler
,
885 ret
= PTR_ERR(agent
);
888 dev
->send_agent
[p
][q
] = agent
;
890 dev
->send_agent
[p
][q
] = NULL
;
897 for (p
= 0; p
< dev
->num_ports
; ++p
)
898 for (q
= 0; q
<= 1; ++q
)
899 if (dev
->send_agent
[p
][q
])
900 ib_unregister_mad_agent(dev
->send_agent
[p
][q
]);
905 void mlx4_ib_mad_cleanup(struct mlx4_ib_dev
*dev
)
907 struct ib_mad_agent
*agent
;
910 for (p
= 0; p
< dev
->num_ports
; ++p
) {
911 for (q
= 0; q
<= 1; ++q
) {
912 agent
= dev
->send_agent
[p
][q
];
914 dev
->send_agent
[p
][q
] = NULL
;
915 ib_unregister_mad_agent(agent
);
920 ib_destroy_ah(dev
->sm_ah
[p
]);
924 static void handle_lid_change_event(struct mlx4_ib_dev
*dev
, u8 port_num
)
926 mlx4_ib_dispatch_event(dev
, port_num
, IB_EVENT_LID_CHANGE
);
928 if (mlx4_is_master(dev
->dev
) && !dev
->sriov
.is_going_down
)
929 mlx4_gen_slaves_port_mgt_ev(dev
->dev
, port_num
,
930 MLX4_EQ_PORT_INFO_LID_CHANGE_MASK
);
933 static void handle_client_rereg_event(struct mlx4_ib_dev
*dev
, u8 port_num
)
935 /* re-configure the alias-guid and mcg's */
936 if (mlx4_is_master(dev
->dev
)) {
937 mlx4_ib_invalidate_all_guid_record(dev
, port_num
);
939 if (!dev
->sriov
.is_going_down
) {
940 mlx4_ib_mcg_port_cleanup(&dev
->sriov
.demux
[port_num
- 1], 0);
941 mlx4_gen_slaves_port_mgt_ev(dev
->dev
, port_num
,
942 MLX4_EQ_PORT_INFO_CLIENT_REREG_MASK
);
945 mlx4_ib_dispatch_event(dev
, port_num
, IB_EVENT_CLIENT_REREGISTER
);
948 static void propagate_pkey_ev(struct mlx4_ib_dev
*dev
, int port_num
,
949 struct mlx4_eqe
*eqe
)
951 __propagate_pkey_ev(dev
, port_num
, GET_BLK_PTR_FROM_EQE(eqe
),
952 GET_MASK_FROM_EQE(eqe
));
955 static void handle_slaves_guid_change(struct mlx4_ib_dev
*dev
, u8 port_num
,
956 u32 guid_tbl_blk_num
, u32 change_bitmap
)
958 struct ib_smp
*in_mad
= NULL
;
959 struct ib_smp
*out_mad
= NULL
;
962 if (!mlx4_is_mfunc(dev
->dev
) || !mlx4_is_master(dev
->dev
))
965 in_mad
= kmalloc(sizeof *in_mad
, GFP_KERNEL
);
966 out_mad
= kmalloc(sizeof *out_mad
, GFP_KERNEL
);
967 if (!in_mad
|| !out_mad
) {
968 mlx4_ib_warn(&dev
->ib_dev
, "failed to allocate memory for guid info mads\n");
972 guid_tbl_blk_num
*= 4;
974 for (i
= 0; i
< 4; i
++) {
975 if (change_bitmap
&& (!((change_bitmap
>> (8 * i
)) & 0xff)))
977 memset(in_mad
, 0, sizeof *in_mad
);
978 memset(out_mad
, 0, sizeof *out_mad
);
980 in_mad
->base_version
= 1;
981 in_mad
->mgmt_class
= IB_MGMT_CLASS_SUBN_LID_ROUTED
;
982 in_mad
->class_version
= 1;
983 in_mad
->method
= IB_MGMT_METHOD_GET
;
984 in_mad
->attr_id
= IB_SMP_ATTR_GUID_INFO
;
985 in_mad
->attr_mod
= cpu_to_be32(guid_tbl_blk_num
+ i
);
987 if (mlx4_MAD_IFC(dev
,
988 MLX4_MAD_IFC_IGNORE_KEYS
| MLX4_MAD_IFC_NET_VIEW
,
989 port_num
, NULL
, NULL
, in_mad
, out_mad
)) {
990 mlx4_ib_warn(&dev
->ib_dev
, "Failed in get GUID INFO MAD_IFC\n");
994 mlx4_ib_update_cache_on_guid_change(dev
, guid_tbl_blk_num
+ i
,
996 (u8
*)(&((struct ib_smp
*)out_mad
)->data
));
997 mlx4_ib_notify_slaves_on_guid_change(dev
, guid_tbl_blk_num
+ i
,
999 (u8
*)(&((struct ib_smp
*)out_mad
)->data
));
1008 void handle_port_mgmt_change_event(struct work_struct
*work
)
1010 struct ib_event_work
*ew
= container_of(work
, struct ib_event_work
, work
);
1011 struct mlx4_ib_dev
*dev
= ew
->ib_dev
;
1012 struct mlx4_eqe
*eqe
= &(ew
->ib_eqe
);
1013 u8 port
= eqe
->event
.port_mgmt_change
.port
;
1018 switch (eqe
->subtype
) {
1019 case MLX4_DEV_PMC_SUBTYPE_PORT_INFO
:
1020 changed_attr
= be32_to_cpu(eqe
->event
.port_mgmt_change
.params
.port_info
.changed_attr
);
1022 /* Update the SM ah - This should be done before handling
1023 the other changed attributes so that MADs can be sent to the SM */
1024 if (changed_attr
& MSTR_SM_CHANGE_MASK
) {
1025 u16 lid
= be16_to_cpu(eqe
->event
.port_mgmt_change
.params
.port_info
.mstr_sm_lid
);
1026 u8 sl
= eqe
->event
.port_mgmt_change
.params
.port_info
.mstr_sm_sl
& 0xf;
1027 update_sm_ah(dev
, port
, lid
, sl
);
1030 /* Check if it is a lid change event */
1031 if (changed_attr
& MLX4_EQ_PORT_INFO_LID_CHANGE_MASK
)
1032 handle_lid_change_event(dev
, port
);
1034 /* Generate GUID changed event */
1035 if (changed_attr
& MLX4_EQ_PORT_INFO_GID_PFX_CHANGE_MASK
) {
1036 mlx4_ib_dispatch_event(dev
, port
, IB_EVENT_GID_CHANGE
);
1037 /*if master, notify all slaves*/
1038 if (mlx4_is_master(dev
->dev
))
1039 mlx4_gen_slaves_port_mgt_ev(dev
->dev
, port
,
1040 MLX4_EQ_PORT_INFO_GID_PFX_CHANGE_MASK
);
1043 if (changed_attr
& MLX4_EQ_PORT_INFO_CLIENT_REREG_MASK
)
1044 handle_client_rereg_event(dev
, port
);
1047 case MLX4_DEV_PMC_SUBTYPE_PKEY_TABLE
:
1048 mlx4_ib_dispatch_event(dev
, port
, IB_EVENT_PKEY_CHANGE
);
1049 if (mlx4_is_master(dev
->dev
) && !dev
->sriov
.is_going_down
)
1050 propagate_pkey_ev(dev
, port
, eqe
);
1052 case MLX4_DEV_PMC_SUBTYPE_GUID_INFO
:
1053 /* paravirtualized master's guid is guid 0 -- does not change */
1054 if (!mlx4_is_master(dev
->dev
))
1055 mlx4_ib_dispatch_event(dev
, port
, IB_EVENT_GID_CHANGE
);
1056 /*if master, notify relevant slaves*/
1057 else if (!dev
->sriov
.is_going_down
) {
1058 tbl_block
= GET_BLK_PTR_FROM_EQE(eqe
);
1059 change_bitmap
= GET_MASK_FROM_EQE(eqe
);
1060 handle_slaves_guid_change(dev
, port
, tbl_block
, change_bitmap
);
1064 pr_warn("Unsupported subtype 0x%x for "
1065 "Port Management Change event\n", eqe
->subtype
);
1071 void mlx4_ib_dispatch_event(struct mlx4_ib_dev
*dev
, u8 port_num
,
1072 enum ib_event_type type
)
1074 struct ib_event event
;
1076 event
.device
= &dev
->ib_dev
;
1077 event
.element
.port_num
= port_num
;
1080 ib_dispatch_event(&event
);
1083 static void mlx4_ib_tunnel_comp_handler(struct ib_cq
*cq
, void *arg
)
1085 unsigned long flags
;
1086 struct mlx4_ib_demux_pv_ctx
*ctx
= cq
->cq_context
;
1087 struct mlx4_ib_dev
*dev
= to_mdev(ctx
->ib_dev
);
1088 spin_lock_irqsave(&dev
->sriov
.going_down_lock
, flags
);
1089 if (!dev
->sriov
.is_going_down
&& ctx
->state
== DEMUX_PV_STATE_ACTIVE
)
1090 queue_work(ctx
->wq
, &ctx
->work
);
1091 spin_unlock_irqrestore(&dev
->sriov
.going_down_lock
, flags
);
1094 static int mlx4_ib_post_pv_qp_buf(struct mlx4_ib_demux_pv_ctx
*ctx
,
1095 struct mlx4_ib_demux_pv_qp
*tun_qp
,
1098 struct ib_sge sg_list
;
1099 struct ib_recv_wr recv_wr
, *bad_recv_wr
;
1102 size
= (tun_qp
->qp
->qp_type
== IB_QPT_UD
) ?
1103 sizeof (struct mlx4_tunnel_mad
) : sizeof (struct mlx4_mad_rcv_buf
);
1105 sg_list
.addr
= tun_qp
->ring
[index
].map
;
1106 sg_list
.length
= size
;
1107 sg_list
.lkey
= ctx
->mr
->lkey
;
1109 recv_wr
.next
= NULL
;
1110 recv_wr
.sg_list
= &sg_list
;
1111 recv_wr
.num_sge
= 1;
1112 recv_wr
.wr_id
= (u64
) index
| MLX4_TUN_WRID_RECV
|
1113 MLX4_TUN_SET_WRID_QPN(tun_qp
->proxy_qpt
);
1114 ib_dma_sync_single_for_device(ctx
->ib_dev
, tun_qp
->ring
[index
].map
,
1115 size
, DMA_FROM_DEVICE
);
1116 return ib_post_recv(tun_qp
->qp
, &recv_wr
, &bad_recv_wr
);
1119 static int mlx4_ib_multiplex_sa_handler(struct ib_device
*ibdev
, int port
,
1120 int slave
, struct ib_sa_mad
*sa_mad
)
1124 /* dispatch to different sa handlers */
1125 switch (be16_to_cpu(sa_mad
->mad_hdr
.attr_id
)) {
1126 case IB_SA_ATTR_MC_MEMBER_REC
:
1127 ret
= mlx4_ib_mcg_multiplex_handler(ibdev
, port
, slave
, sa_mad
);
1135 static int is_proxy_qp0(struct mlx4_ib_dev
*dev
, int qpn
, int slave
)
1137 int proxy_start
= dev
->dev
->phys_caps
.base_proxy_sqpn
+ 8 * slave
;
1139 return (qpn
>= proxy_start
&& qpn
<= proxy_start
+ 1);
1143 int mlx4_ib_send_to_wire(struct mlx4_ib_dev
*dev
, int slave
, u8 port
,
1144 enum ib_qp_type dest_qpt
, u16 pkey_index
,
1145 u32 remote_qpn
, u32 qkey
, struct ib_ah_attr
*attr
,
1146 u8
*s_mac
, struct ib_mad
*mad
)
1149 struct ib_send_wr wr
, *bad_wr
;
1150 struct mlx4_ib_demux_pv_ctx
*sqp_ctx
;
1151 struct mlx4_ib_demux_pv_qp
*sqp
;
1152 struct mlx4_mad_snd_buf
*sqp_mad
;
1154 struct ib_qp
*send_qp
= NULL
;
1155 unsigned wire_tx_ix
= 0;
1162 sqp_ctx
= dev
->sriov
.sqps
[port
-1];
1164 /* check if proxy qp created */
1165 if (!sqp_ctx
|| sqp_ctx
->state
!= DEMUX_PV_STATE_ACTIVE
)
1168 /* QP0 forwarding only for Dom0 */
1169 if (dest_qpt
== IB_QPT_SMI
&& (mlx4_master_func_num(dev
->dev
) != slave
))
1172 if (dest_qpt
== IB_QPT_SMI
) {
1174 sqp
= &sqp_ctx
->qp
[0];
1175 wire_pkey_ix
= dev
->pkeys
.virt2phys_pkey
[slave
][port
- 1][0];
1178 sqp
= &sqp_ctx
->qp
[1];
1179 wire_pkey_ix
= dev
->pkeys
.virt2phys_pkey
[slave
][port
- 1][pkey_index
];
1185 sgid_index
= attr
->grh
.sgid_index
;
1186 attr
->grh
.sgid_index
= 0;
1187 ah
= ib_create_ah(sqp_ctx
->pd
, attr
);
1190 attr
->grh
.sgid_index
= sgid_index
;
1191 to_mah(ah
)->av
.ib
.gid_index
= sgid_index
;
1192 /* get rid of force-loopback bit */
1193 to_mah(ah
)->av
.ib
.port_pd
&= cpu_to_be32(0x7FFFFFFF);
1194 spin_lock(&sqp
->tx_lock
);
1195 if (sqp
->tx_ix_head
- sqp
->tx_ix_tail
>=
1196 (MLX4_NUM_TUNNEL_BUFS
- 1))
1199 wire_tx_ix
= (++sqp
->tx_ix_head
) & (MLX4_NUM_TUNNEL_BUFS
- 1);
1200 spin_unlock(&sqp
->tx_lock
);
1204 sqp_mad
= (struct mlx4_mad_snd_buf
*) (sqp
->tx_ring
[wire_tx_ix
].buf
.addr
);
1205 if (sqp
->tx_ring
[wire_tx_ix
].ah
)
1206 ib_destroy_ah(sqp
->tx_ring
[wire_tx_ix
].ah
);
1207 sqp
->tx_ring
[wire_tx_ix
].ah
= ah
;
1208 ib_dma_sync_single_for_cpu(&dev
->ib_dev
,
1209 sqp
->tx_ring
[wire_tx_ix
].buf
.map
,
1210 sizeof (struct mlx4_mad_snd_buf
),
1213 memcpy(&sqp_mad
->payload
, mad
, sizeof *mad
);
1215 ib_dma_sync_single_for_device(&dev
->ib_dev
,
1216 sqp
->tx_ring
[wire_tx_ix
].buf
.map
,
1217 sizeof (struct mlx4_mad_snd_buf
),
1220 list
.addr
= sqp
->tx_ring
[wire_tx_ix
].buf
.map
;
1221 list
.length
= sizeof (struct mlx4_mad_snd_buf
);
1222 list
.lkey
= sqp_ctx
->mr
->lkey
;
1225 wr
.wr
.ud
.port_num
= port
;
1226 wr
.wr
.ud
.pkey_index
= wire_pkey_ix
;
1227 wr
.wr
.ud
.remote_qkey
= qkey
;
1228 wr
.wr
.ud
.remote_qpn
= remote_qpn
;
1230 wr
.wr_id
= ((u64
) wire_tx_ix
) | MLX4_TUN_SET_WRID_QPN(src_qpnum
);
1233 wr
.opcode
= IB_WR_SEND
;
1234 wr
.send_flags
= IB_SEND_SIGNALED
;
1236 memcpy(to_mah(ah
)->av
.eth
.s_mac
, s_mac
, 6);
1239 ret
= ib_post_send(send_qp
, &wr
, &bad_wr
);
1246 static int get_slave_base_gid_ix(struct mlx4_ib_dev
*dev
, int slave
, int port
)
1248 if (rdma_port_get_link_layer(&dev
->ib_dev
, port
) == IB_LINK_LAYER_INFINIBAND
)
1250 return mlx4_get_base_gid_ix(dev
->dev
, slave
, port
);
1253 static void fill_in_real_sgid_index(struct mlx4_ib_dev
*dev
, int slave
, int port
,
1254 struct ib_ah_attr
*ah_attr
)
1256 if (rdma_port_get_link_layer(&dev
->ib_dev
, port
) == IB_LINK_LAYER_INFINIBAND
)
1257 ah_attr
->grh
.sgid_index
= slave
;
1259 ah_attr
->grh
.sgid_index
+= get_slave_base_gid_ix(dev
, slave
, port
);
1262 static void mlx4_ib_multiplex_mad(struct mlx4_ib_demux_pv_ctx
*ctx
, struct ib_wc
*wc
)
1264 struct mlx4_ib_dev
*dev
= to_mdev(ctx
->ib_dev
);
1265 struct mlx4_ib_demux_pv_qp
*tun_qp
= &ctx
->qp
[MLX4_TUN_WRID_QPN(wc
->wr_id
)];
1266 int wr_ix
= wc
->wr_id
& (MLX4_NUM_TUNNEL_BUFS
- 1);
1267 struct mlx4_tunnel_mad
*tunnel
= tun_qp
->ring
[wr_ix
].addr
;
1268 struct mlx4_ib_ah ah
;
1269 struct ib_ah_attr ah_attr
;
1274 /* Get slave that sent this packet */
1275 if (wc
->src_qp
< dev
->dev
->phys_caps
.base_proxy_sqpn
||
1276 wc
->src_qp
>= dev
->dev
->phys_caps
.base_proxy_sqpn
+ 8 * MLX4_MFUNC_MAX
||
1277 (wc
->src_qp
& 0x1) != ctx
->port
- 1 ||
1279 mlx4_ib_warn(ctx
->ib_dev
, "can't multiplex bad sqp:%d\n", wc
->src_qp
);
1282 slave
= ((wc
->src_qp
& ~0x7) - dev
->dev
->phys_caps
.base_proxy_sqpn
) / 8;
1283 if (slave
!= ctx
->slave
) {
1284 mlx4_ib_warn(ctx
->ib_dev
, "can't multiplex bad sqp:%d: "
1285 "belongs to another slave\n", wc
->src_qp
);
1288 if (slave
!= mlx4_master_func_num(dev
->dev
) && !(wc
->src_qp
& 0x2)) {
1289 mlx4_ib_warn(ctx
->ib_dev
, "can't multiplex bad sqp:%d: "
1290 "non-master trying to send QP0 packets\n", wc
->src_qp
);
1294 /* Map transaction ID */
1295 ib_dma_sync_single_for_cpu(ctx
->ib_dev
, tun_qp
->ring
[wr_ix
].map
,
1296 sizeof (struct mlx4_tunnel_mad
),
1298 switch (tunnel
->mad
.mad_hdr
.method
) {
1299 case IB_MGMT_METHOD_SET
:
1300 case IB_MGMT_METHOD_GET
:
1301 case IB_MGMT_METHOD_REPORT
:
1302 case IB_SA_METHOD_GET_TABLE
:
1303 case IB_SA_METHOD_DELETE
:
1304 case IB_SA_METHOD_GET_MULTI
:
1305 case IB_SA_METHOD_GET_TRACE_TBL
:
1306 slave_id
= (u8
*) &tunnel
->mad
.mad_hdr
.tid
;
1308 mlx4_ib_warn(ctx
->ib_dev
, "egress mad has non-null tid msb:%d "
1309 "class:%d slave:%d\n", *slave_id
,
1310 tunnel
->mad
.mad_hdr
.mgmt_class
, slave
);
1318 /* Class-specific handling */
1319 switch (tunnel
->mad
.mad_hdr
.mgmt_class
) {
1320 case IB_MGMT_CLASS_SUBN_ADM
:
1321 if (mlx4_ib_multiplex_sa_handler(ctx
->ib_dev
, ctx
->port
, slave
,
1322 (struct ib_sa_mad
*) &tunnel
->mad
))
1325 case IB_MGMT_CLASS_CM
:
1326 if (mlx4_ib_multiplex_cm_handler(ctx
->ib_dev
, ctx
->port
, slave
,
1327 (struct ib_mad
*) &tunnel
->mad
))
1330 case IB_MGMT_CLASS_DEVICE_MGMT
:
1331 if (tunnel
->mad
.mad_hdr
.method
!= IB_MGMT_METHOD_GET
&&
1332 tunnel
->mad
.mad_hdr
.method
!= IB_MGMT_METHOD_SET
)
1336 /* Drop unsupported classes for slaves in tunnel mode */
1337 if (slave
!= mlx4_master_func_num(dev
->dev
)) {
1338 mlx4_ib_warn(ctx
->ib_dev
, "dropping unsupported egress mad from class:%d "
1339 "for slave:%d\n", tunnel
->mad
.mad_hdr
.mgmt_class
, slave
);
1344 /* We are using standard ib_core services to send the mad, so generate a
1345 * stadard address handle by decoding the tunnelled mlx4_ah fields */
1346 memcpy(&ah
.av
, &tunnel
->hdr
.av
, sizeof (struct mlx4_av
));
1347 ah
.ibah
.device
= ctx
->ib_dev
;
1348 mlx4_ib_query_ah(&ah
.ibah
, &ah_attr
);
1349 if (ah_attr
.ah_flags
& IB_AH_GRH
)
1350 fill_in_real_sgid_index(dev
, slave
, ctx
->port
, &ah_attr
);
1352 port
= mlx4_slave_convert_port(dev
->dev
, slave
, ah_attr
.port_num
);
1355 ah_attr
.port_num
= port
;
1356 memcpy(ah_attr
.dmac
, tunnel
->hdr
.mac
, 6);
1357 ah_attr
.vlan_id
= be16_to_cpu(tunnel
->hdr
.vlan
);
1358 /* if slave have default vlan use it */
1359 mlx4_get_slave_default_vlan(dev
->dev
, ctx
->port
, slave
,
1360 &ah_attr
.vlan_id
, &ah_attr
.sl
);
1362 mlx4_ib_send_to_wire(dev
, slave
, ctx
->port
,
1363 is_proxy_qp0(dev
, wc
->src_qp
, slave
) ?
1364 IB_QPT_SMI
: IB_QPT_GSI
,
1365 be16_to_cpu(tunnel
->hdr
.pkey_index
),
1366 be32_to_cpu(tunnel
->hdr
.remote_qpn
),
1367 be32_to_cpu(tunnel
->hdr
.qkey
),
1368 &ah_attr
, wc
->smac
, &tunnel
->mad
);
1371 static int mlx4_ib_alloc_pv_bufs(struct mlx4_ib_demux_pv_ctx
*ctx
,
1372 enum ib_qp_type qp_type
, int is_tun
)
1375 struct mlx4_ib_demux_pv_qp
*tun_qp
;
1376 int rx_buf_size
, tx_buf_size
;
1378 if (qp_type
> IB_QPT_GSI
)
1381 tun_qp
= &ctx
->qp
[qp_type
];
1383 tun_qp
->ring
= kzalloc(sizeof (struct mlx4_ib_buf
) * MLX4_NUM_TUNNEL_BUFS
,
1388 tun_qp
->tx_ring
= kcalloc(MLX4_NUM_TUNNEL_BUFS
,
1389 sizeof (struct mlx4_ib_tun_tx_buf
),
1391 if (!tun_qp
->tx_ring
) {
1392 kfree(tun_qp
->ring
);
1393 tun_qp
->ring
= NULL
;
1398 rx_buf_size
= sizeof (struct mlx4_tunnel_mad
);
1399 tx_buf_size
= sizeof (struct mlx4_rcv_tunnel_mad
);
1401 rx_buf_size
= sizeof (struct mlx4_mad_rcv_buf
);
1402 tx_buf_size
= sizeof (struct mlx4_mad_snd_buf
);
1405 for (i
= 0; i
< MLX4_NUM_TUNNEL_BUFS
; i
++) {
1406 tun_qp
->ring
[i
].addr
= kmalloc(rx_buf_size
, GFP_KERNEL
);
1407 if (!tun_qp
->ring
[i
].addr
)
1409 tun_qp
->ring
[i
].map
= ib_dma_map_single(ctx
->ib_dev
,
1410 tun_qp
->ring
[i
].addr
,
1415 for (i
= 0; i
< MLX4_NUM_TUNNEL_BUFS
; i
++) {
1416 tun_qp
->tx_ring
[i
].buf
.addr
=
1417 kmalloc(tx_buf_size
, GFP_KERNEL
);
1418 if (!tun_qp
->tx_ring
[i
].buf
.addr
)
1420 tun_qp
->tx_ring
[i
].buf
.map
=
1421 ib_dma_map_single(ctx
->ib_dev
,
1422 tun_qp
->tx_ring
[i
].buf
.addr
,
1425 tun_qp
->tx_ring
[i
].ah
= NULL
;
1427 spin_lock_init(&tun_qp
->tx_lock
);
1428 tun_qp
->tx_ix_head
= 0;
1429 tun_qp
->tx_ix_tail
= 0;
1430 tun_qp
->proxy_qpt
= qp_type
;
1437 ib_dma_unmap_single(ctx
->ib_dev
, tun_qp
->tx_ring
[i
].buf
.map
,
1438 tx_buf_size
, DMA_TO_DEVICE
);
1439 kfree(tun_qp
->tx_ring
[i
].buf
.addr
);
1441 kfree(tun_qp
->tx_ring
);
1442 tun_qp
->tx_ring
= NULL
;
1443 i
= MLX4_NUM_TUNNEL_BUFS
;
1447 ib_dma_unmap_single(ctx
->ib_dev
, tun_qp
->ring
[i
].map
,
1448 rx_buf_size
, DMA_FROM_DEVICE
);
1449 kfree(tun_qp
->ring
[i
].addr
);
1451 kfree(tun_qp
->ring
);
1452 tun_qp
->ring
= NULL
;
1456 static void mlx4_ib_free_pv_qp_bufs(struct mlx4_ib_demux_pv_ctx
*ctx
,
1457 enum ib_qp_type qp_type
, int is_tun
)
1460 struct mlx4_ib_demux_pv_qp
*tun_qp
;
1461 int rx_buf_size
, tx_buf_size
;
1463 if (qp_type
> IB_QPT_GSI
)
1466 tun_qp
= &ctx
->qp
[qp_type
];
1468 rx_buf_size
= sizeof (struct mlx4_tunnel_mad
);
1469 tx_buf_size
= sizeof (struct mlx4_rcv_tunnel_mad
);
1471 rx_buf_size
= sizeof (struct mlx4_mad_rcv_buf
);
1472 tx_buf_size
= sizeof (struct mlx4_mad_snd_buf
);
1476 for (i
= 0; i
< MLX4_NUM_TUNNEL_BUFS
; i
++) {
1477 ib_dma_unmap_single(ctx
->ib_dev
, tun_qp
->ring
[i
].map
,
1478 rx_buf_size
, DMA_FROM_DEVICE
);
1479 kfree(tun_qp
->ring
[i
].addr
);
1482 for (i
= 0; i
< MLX4_NUM_TUNNEL_BUFS
; i
++) {
1483 ib_dma_unmap_single(ctx
->ib_dev
, tun_qp
->tx_ring
[i
].buf
.map
,
1484 tx_buf_size
, DMA_TO_DEVICE
);
1485 kfree(tun_qp
->tx_ring
[i
].buf
.addr
);
1486 if (tun_qp
->tx_ring
[i
].ah
)
1487 ib_destroy_ah(tun_qp
->tx_ring
[i
].ah
);
1489 kfree(tun_qp
->tx_ring
);
1490 kfree(tun_qp
->ring
);
1493 static void mlx4_ib_tunnel_comp_worker(struct work_struct
*work
)
1495 struct mlx4_ib_demux_pv_ctx
*ctx
;
1496 struct mlx4_ib_demux_pv_qp
*tun_qp
;
1499 ctx
= container_of(work
, struct mlx4_ib_demux_pv_ctx
, work
);
1500 ib_req_notify_cq(ctx
->cq
, IB_CQ_NEXT_COMP
);
1502 while (ib_poll_cq(ctx
->cq
, 1, &wc
) == 1) {
1503 tun_qp
= &ctx
->qp
[MLX4_TUN_WRID_QPN(wc
.wr_id
)];
1504 if (wc
.status
== IB_WC_SUCCESS
) {
1505 switch (wc
.opcode
) {
1507 mlx4_ib_multiplex_mad(ctx
, &wc
);
1508 ret
= mlx4_ib_post_pv_qp_buf(ctx
, tun_qp
,
1510 (MLX4_NUM_TUNNEL_BUFS
- 1));
1512 pr_err("Failed reposting tunnel "
1513 "buf:%lld\n", wc
.wr_id
);
1516 pr_debug("received tunnel send completion:"
1517 "wrid=0x%llx, status=0x%x\n",
1518 wc
.wr_id
, wc
.status
);
1519 ib_destroy_ah(tun_qp
->tx_ring
[wc
.wr_id
&
1520 (MLX4_NUM_TUNNEL_BUFS
- 1)].ah
);
1521 tun_qp
->tx_ring
[wc
.wr_id
& (MLX4_NUM_TUNNEL_BUFS
- 1)].ah
1523 spin_lock(&tun_qp
->tx_lock
);
1524 tun_qp
->tx_ix_tail
++;
1525 spin_unlock(&tun_qp
->tx_lock
);
1532 pr_debug("mlx4_ib: completion error in tunnel: %d."
1533 " status = %d, wrid = 0x%llx\n",
1534 ctx
->slave
, wc
.status
, wc
.wr_id
);
1535 if (!MLX4_TUN_IS_RECV(wc
.wr_id
)) {
1536 ib_destroy_ah(tun_qp
->tx_ring
[wc
.wr_id
&
1537 (MLX4_NUM_TUNNEL_BUFS
- 1)].ah
);
1538 tun_qp
->tx_ring
[wc
.wr_id
& (MLX4_NUM_TUNNEL_BUFS
- 1)].ah
1540 spin_lock(&tun_qp
->tx_lock
);
1541 tun_qp
->tx_ix_tail
++;
1542 spin_unlock(&tun_qp
->tx_lock
);
1548 static void pv_qp_event_handler(struct ib_event
*event
, void *qp_context
)
1550 struct mlx4_ib_demux_pv_ctx
*sqp
= qp_context
;
1552 /* It's worse than that! He's dead, Jim! */
1553 pr_err("Fatal error (%d) on a MAD QP on port %d\n",
1554 event
->event
, sqp
->port
);
1557 static int create_pv_sqp(struct mlx4_ib_demux_pv_ctx
*ctx
,
1558 enum ib_qp_type qp_type
, int create_tun
)
1561 struct mlx4_ib_demux_pv_qp
*tun_qp
;
1562 struct mlx4_ib_qp_tunnel_init_attr qp_init_attr
;
1563 struct ib_qp_attr attr
;
1564 int qp_attr_mask_INIT
;
1566 if (qp_type
> IB_QPT_GSI
)
1569 tun_qp
= &ctx
->qp
[qp_type
];
1571 memset(&qp_init_attr
, 0, sizeof qp_init_attr
);
1572 qp_init_attr
.init_attr
.send_cq
= ctx
->cq
;
1573 qp_init_attr
.init_attr
.recv_cq
= ctx
->cq
;
1574 qp_init_attr
.init_attr
.sq_sig_type
= IB_SIGNAL_ALL_WR
;
1575 qp_init_attr
.init_attr
.cap
.max_send_wr
= MLX4_NUM_TUNNEL_BUFS
;
1576 qp_init_attr
.init_attr
.cap
.max_recv_wr
= MLX4_NUM_TUNNEL_BUFS
;
1577 qp_init_attr
.init_attr
.cap
.max_send_sge
= 1;
1578 qp_init_attr
.init_attr
.cap
.max_recv_sge
= 1;
1580 qp_init_attr
.init_attr
.qp_type
= IB_QPT_UD
;
1581 qp_init_attr
.init_attr
.create_flags
= MLX4_IB_SRIOV_TUNNEL_QP
;
1582 qp_init_attr
.port
= ctx
->port
;
1583 qp_init_attr
.slave
= ctx
->slave
;
1584 qp_init_attr
.proxy_qp_type
= qp_type
;
1585 qp_attr_mask_INIT
= IB_QP_STATE
| IB_QP_PKEY_INDEX
|
1586 IB_QP_QKEY
| IB_QP_PORT
;
1588 qp_init_attr
.init_attr
.qp_type
= qp_type
;
1589 qp_init_attr
.init_attr
.create_flags
= MLX4_IB_SRIOV_SQP
;
1590 qp_attr_mask_INIT
= IB_QP_STATE
| IB_QP_PKEY_INDEX
| IB_QP_QKEY
;
1592 qp_init_attr
.init_attr
.port_num
= ctx
->port
;
1593 qp_init_attr
.init_attr
.qp_context
= ctx
;
1594 qp_init_attr
.init_attr
.event_handler
= pv_qp_event_handler
;
1595 tun_qp
->qp
= ib_create_qp(ctx
->pd
, &qp_init_attr
.init_attr
);
1596 if (IS_ERR(tun_qp
->qp
)) {
1597 ret
= PTR_ERR(tun_qp
->qp
);
1599 pr_err("Couldn't create %s QP (%d)\n",
1600 create_tun
? "tunnel" : "special", ret
);
1604 memset(&attr
, 0, sizeof attr
);
1605 attr
.qp_state
= IB_QPS_INIT
;
1608 ret
= find_slave_port_pkey_ix(to_mdev(ctx
->ib_dev
), ctx
->slave
,
1609 ctx
->port
, IB_DEFAULT_PKEY_FULL
,
1611 if (ret
|| !create_tun
)
1613 to_mdev(ctx
->ib_dev
)->pkeys
.virt2phys_pkey
[ctx
->slave
][ctx
->port
- 1][0];
1614 attr
.qkey
= IB_QP1_QKEY
;
1615 attr
.port_num
= ctx
->port
;
1616 ret
= ib_modify_qp(tun_qp
->qp
, &attr
, qp_attr_mask_INIT
);
1618 pr_err("Couldn't change %s qp state to INIT (%d)\n",
1619 create_tun
? "tunnel" : "special", ret
);
1622 attr
.qp_state
= IB_QPS_RTR
;
1623 ret
= ib_modify_qp(tun_qp
->qp
, &attr
, IB_QP_STATE
);
1625 pr_err("Couldn't change %s qp state to RTR (%d)\n",
1626 create_tun
? "tunnel" : "special", ret
);
1629 attr
.qp_state
= IB_QPS_RTS
;
1631 ret
= ib_modify_qp(tun_qp
->qp
, &attr
, IB_QP_STATE
| IB_QP_SQ_PSN
);
1633 pr_err("Couldn't change %s qp state to RTS (%d)\n",
1634 create_tun
? "tunnel" : "special", ret
);
1638 for (i
= 0; i
< MLX4_NUM_TUNNEL_BUFS
; i
++) {
1639 ret
= mlx4_ib_post_pv_qp_buf(ctx
, tun_qp
, i
);
1641 pr_err(" mlx4_ib_post_pv_buf error"
1642 " (err = %d, i = %d)\n", ret
, i
);
1649 ib_destroy_qp(tun_qp
->qp
);
1655 * IB MAD completion callback for real SQPs
1657 static void mlx4_ib_sqp_comp_worker(struct work_struct
*work
)
1659 struct mlx4_ib_demux_pv_ctx
*ctx
;
1660 struct mlx4_ib_demux_pv_qp
*sqp
;
1665 ctx
= container_of(work
, struct mlx4_ib_demux_pv_ctx
, work
);
1666 ib_req_notify_cq(ctx
->cq
, IB_CQ_NEXT_COMP
);
1668 while (mlx4_ib_poll_cq(ctx
->cq
, 1, &wc
) == 1) {
1669 sqp
= &ctx
->qp
[MLX4_TUN_WRID_QPN(wc
.wr_id
)];
1670 if (wc
.status
== IB_WC_SUCCESS
) {
1671 switch (wc
.opcode
) {
1673 ib_destroy_ah(sqp
->tx_ring
[wc
.wr_id
&
1674 (MLX4_NUM_TUNNEL_BUFS
- 1)].ah
);
1675 sqp
->tx_ring
[wc
.wr_id
& (MLX4_NUM_TUNNEL_BUFS
- 1)].ah
1677 spin_lock(&sqp
->tx_lock
);
1679 spin_unlock(&sqp
->tx_lock
);
1682 mad
= (struct ib_mad
*) &(((struct mlx4_mad_rcv_buf
*)
1683 (sqp
->ring
[wc
.wr_id
&
1684 (MLX4_NUM_TUNNEL_BUFS
- 1)].addr
))->payload
);
1685 grh
= &(((struct mlx4_mad_rcv_buf
*)
1686 (sqp
->ring
[wc
.wr_id
&
1687 (MLX4_NUM_TUNNEL_BUFS
- 1)].addr
))->grh
);
1688 mlx4_ib_demux_mad(ctx
->ib_dev
, ctx
->port
, &wc
, grh
, mad
);
1689 if (mlx4_ib_post_pv_qp_buf(ctx
, sqp
, wc
.wr_id
&
1690 (MLX4_NUM_TUNNEL_BUFS
- 1)))
1691 pr_err("Failed reposting SQP "
1692 "buf:%lld\n", wc
.wr_id
);
1699 pr_debug("mlx4_ib: completion error in tunnel: %d."
1700 " status = %d, wrid = 0x%llx\n",
1701 ctx
->slave
, wc
.status
, wc
.wr_id
);
1702 if (!MLX4_TUN_IS_RECV(wc
.wr_id
)) {
1703 ib_destroy_ah(sqp
->tx_ring
[wc
.wr_id
&
1704 (MLX4_NUM_TUNNEL_BUFS
- 1)].ah
);
1705 sqp
->tx_ring
[wc
.wr_id
& (MLX4_NUM_TUNNEL_BUFS
- 1)].ah
1707 spin_lock(&sqp
->tx_lock
);
1709 spin_unlock(&sqp
->tx_lock
);
1715 static int alloc_pv_object(struct mlx4_ib_dev
*dev
, int slave
, int port
,
1716 struct mlx4_ib_demux_pv_ctx
**ret_ctx
)
1718 struct mlx4_ib_demux_pv_ctx
*ctx
;
1721 ctx
= kzalloc(sizeof (struct mlx4_ib_demux_pv_ctx
), GFP_KERNEL
);
1723 pr_err("failed allocating pv resource context "
1724 "for port %d, slave %d\n", port
, slave
);
1728 ctx
->ib_dev
= &dev
->ib_dev
;
1735 static void free_pv_object(struct mlx4_ib_dev
*dev
, int slave
, int port
)
1737 if (dev
->sriov
.demux
[port
- 1].tun
[slave
]) {
1738 kfree(dev
->sriov
.demux
[port
- 1].tun
[slave
]);
1739 dev
->sriov
.demux
[port
- 1].tun
[slave
] = NULL
;
1743 static int create_pv_resources(struct ib_device
*ibdev
, int slave
, int port
,
1744 int create_tun
, struct mlx4_ib_demux_pv_ctx
*ctx
)
1748 if (ctx
->state
!= DEMUX_PV_STATE_DOWN
)
1751 ctx
->state
= DEMUX_PV_STATE_STARTING
;
1752 /* have QP0 only on port owner, and only if link layer is IB */
1753 if (ctx
->slave
== mlx4_master_func_num(to_mdev(ctx
->ib_dev
)->dev
) &&
1754 rdma_port_get_link_layer(ibdev
, ctx
->port
) == IB_LINK_LAYER_INFINIBAND
)
1758 ret
= mlx4_ib_alloc_pv_bufs(ctx
, IB_QPT_SMI
, create_tun
);
1760 pr_err("Failed allocating qp0 tunnel bufs (%d)\n", ret
);
1765 ret
= mlx4_ib_alloc_pv_bufs(ctx
, IB_QPT_GSI
, create_tun
);
1767 pr_err("Failed allocating qp1 tunnel bufs (%d)\n", ret
);
1771 cq_size
= 2 * MLX4_NUM_TUNNEL_BUFS
;
1775 ctx
->cq
= ib_create_cq(ctx
->ib_dev
, mlx4_ib_tunnel_comp_handler
,
1776 NULL
, ctx
, cq_size
, 0);
1777 if (IS_ERR(ctx
->cq
)) {
1778 ret
= PTR_ERR(ctx
->cq
);
1779 pr_err("Couldn't create tunnel CQ (%d)\n", ret
);
1783 ctx
->pd
= ib_alloc_pd(ctx
->ib_dev
);
1784 if (IS_ERR(ctx
->pd
)) {
1785 ret
= PTR_ERR(ctx
->pd
);
1786 pr_err("Couldn't create tunnel PD (%d)\n", ret
);
1790 ctx
->mr
= ib_get_dma_mr(ctx
->pd
, IB_ACCESS_LOCAL_WRITE
);
1791 if (IS_ERR(ctx
->mr
)) {
1792 ret
= PTR_ERR(ctx
->mr
);
1793 pr_err("Couldn't get tunnel DMA MR (%d)\n", ret
);
1798 ret
= create_pv_sqp(ctx
, IB_QPT_SMI
, create_tun
);
1800 pr_err("Couldn't create %s QP0 (%d)\n",
1801 create_tun
? "tunnel for" : "", ret
);
1806 ret
= create_pv_sqp(ctx
, IB_QPT_GSI
, create_tun
);
1808 pr_err("Couldn't create %s QP1 (%d)\n",
1809 create_tun
? "tunnel for" : "", ret
);
1814 INIT_WORK(&ctx
->work
, mlx4_ib_tunnel_comp_worker
);
1816 INIT_WORK(&ctx
->work
, mlx4_ib_sqp_comp_worker
);
1818 ctx
->wq
= to_mdev(ibdev
)->sriov
.demux
[port
- 1].wq
;
1820 ret
= ib_req_notify_cq(ctx
->cq
, IB_CQ_NEXT_COMP
);
1822 pr_err("Couldn't arm tunnel cq (%d)\n", ret
);
1825 ctx
->state
= DEMUX_PV_STATE_ACTIVE
;
1830 ib_destroy_qp(ctx
->qp
[1].qp
);
1831 ctx
->qp
[1].qp
= NULL
;
1836 ib_destroy_qp(ctx
->qp
[0].qp
);
1837 ctx
->qp
[0].qp
= NULL
;
1840 ib_dereg_mr(ctx
->mr
);
1844 ib_dealloc_pd(ctx
->pd
);
1848 ib_destroy_cq(ctx
->cq
);
1852 mlx4_ib_free_pv_qp_bufs(ctx
, IB_QPT_GSI
, create_tun
);
1856 mlx4_ib_free_pv_qp_bufs(ctx
, IB_QPT_SMI
, create_tun
);
1858 ctx
->state
= DEMUX_PV_STATE_DOWN
;
1862 static void destroy_pv_resources(struct mlx4_ib_dev
*dev
, int slave
, int port
,
1863 struct mlx4_ib_demux_pv_ctx
*ctx
, int flush
)
1867 if (ctx
->state
> DEMUX_PV_STATE_DOWN
) {
1868 ctx
->state
= DEMUX_PV_STATE_DOWNING
;
1870 flush_workqueue(ctx
->wq
);
1872 ib_destroy_qp(ctx
->qp
[0].qp
);
1873 ctx
->qp
[0].qp
= NULL
;
1874 mlx4_ib_free_pv_qp_bufs(ctx
, IB_QPT_SMI
, 1);
1876 ib_destroy_qp(ctx
->qp
[1].qp
);
1877 ctx
->qp
[1].qp
= NULL
;
1878 mlx4_ib_free_pv_qp_bufs(ctx
, IB_QPT_GSI
, 1);
1879 ib_dereg_mr(ctx
->mr
);
1881 ib_dealloc_pd(ctx
->pd
);
1883 ib_destroy_cq(ctx
->cq
);
1885 ctx
->state
= DEMUX_PV_STATE_DOWN
;
1889 static int mlx4_ib_tunnels_update(struct mlx4_ib_dev
*dev
, int slave
,
1890 int port
, int do_init
)
1895 clean_vf_mcast(&dev
->sriov
.demux
[port
- 1], slave
);
1896 /* for master, destroy real sqp resources */
1897 if (slave
== mlx4_master_func_num(dev
->dev
))
1898 destroy_pv_resources(dev
, slave
, port
,
1899 dev
->sriov
.sqps
[port
- 1], 1);
1900 /* destroy the tunnel qp resources */
1901 destroy_pv_resources(dev
, slave
, port
,
1902 dev
->sriov
.demux
[port
- 1].tun
[slave
], 1);
1906 /* create the tunnel qp resources */
1907 ret
= create_pv_resources(&dev
->ib_dev
, slave
, port
, 1,
1908 dev
->sriov
.demux
[port
- 1].tun
[slave
]);
1910 /* for master, create the real sqp resources */
1911 if (!ret
&& slave
== mlx4_master_func_num(dev
->dev
))
1912 ret
= create_pv_resources(&dev
->ib_dev
, slave
, port
, 0,
1913 dev
->sriov
.sqps
[port
- 1]);
1917 void mlx4_ib_tunnels_update_work(struct work_struct
*work
)
1919 struct mlx4_ib_demux_work
*dmxw
;
1921 dmxw
= container_of(work
, struct mlx4_ib_demux_work
, work
);
1922 mlx4_ib_tunnels_update(dmxw
->dev
, dmxw
->slave
, (int) dmxw
->port
,
1928 static int mlx4_ib_alloc_demux_ctx(struct mlx4_ib_dev
*dev
,
1929 struct mlx4_ib_demux_ctx
*ctx
,
1936 ctx
->tun
= kcalloc(dev
->dev
->caps
.sqp_demux
,
1937 sizeof (struct mlx4_ib_demux_pv_ctx
*), GFP_KERNEL
);
1943 ctx
->ib_dev
= &dev
->ib_dev
;
1946 i
< min(dev
->dev
->caps
.sqp_demux
, (u16
)(dev
->dev
->num_vfs
+ 1));
1948 struct mlx4_active_ports actv_ports
=
1949 mlx4_get_active_ports(dev
->dev
, i
);
1951 if (!test_bit(port
- 1, actv_ports
.ports
))
1954 ret
= alloc_pv_object(dev
, i
, port
, &ctx
->tun
[i
]);
1961 ret
= mlx4_ib_mcg_port_init(ctx
);
1963 pr_err("Failed initializing mcg para-virt (%d)\n", ret
);
1967 snprintf(name
, sizeof name
, "mlx4_ibt%d", port
);
1968 ctx
->wq
= create_singlethread_workqueue(name
);
1970 pr_err("Failed to create tunnelling WQ for port %d\n", port
);
1975 snprintf(name
, sizeof name
, "mlx4_ibud%d", port
);
1976 ctx
->ud_wq
= create_singlethread_workqueue(name
);
1978 pr_err("Failed to create up/down WQ for port %d\n", port
);
1986 destroy_workqueue(ctx
->wq
);
1990 mlx4_ib_mcg_port_cleanup(ctx
, 1);
1992 for (i
= 0; i
< dev
->dev
->caps
.sqp_demux
; i
++)
1993 free_pv_object(dev
, i
, port
);
1999 static void mlx4_ib_free_sqp_ctx(struct mlx4_ib_demux_pv_ctx
*sqp_ctx
)
2001 if (sqp_ctx
->state
> DEMUX_PV_STATE_DOWN
) {
2002 sqp_ctx
->state
= DEMUX_PV_STATE_DOWNING
;
2003 flush_workqueue(sqp_ctx
->wq
);
2004 if (sqp_ctx
->has_smi
) {
2005 ib_destroy_qp(sqp_ctx
->qp
[0].qp
);
2006 sqp_ctx
->qp
[0].qp
= NULL
;
2007 mlx4_ib_free_pv_qp_bufs(sqp_ctx
, IB_QPT_SMI
, 0);
2009 ib_destroy_qp(sqp_ctx
->qp
[1].qp
);
2010 sqp_ctx
->qp
[1].qp
= NULL
;
2011 mlx4_ib_free_pv_qp_bufs(sqp_ctx
, IB_QPT_GSI
, 0);
2012 ib_dereg_mr(sqp_ctx
->mr
);
2014 ib_dealloc_pd(sqp_ctx
->pd
);
2016 ib_destroy_cq(sqp_ctx
->cq
);
2018 sqp_ctx
->state
= DEMUX_PV_STATE_DOWN
;
2022 static void mlx4_ib_free_demux_ctx(struct mlx4_ib_demux_ctx
*ctx
)
2026 struct mlx4_ib_dev
*dev
= to_mdev(ctx
->ib_dev
);
2027 mlx4_ib_mcg_port_cleanup(ctx
, 1);
2028 for (i
= 0; i
< dev
->dev
->caps
.sqp_demux
; i
++) {
2031 if (ctx
->tun
[i
]->state
> DEMUX_PV_STATE_DOWN
)
2032 ctx
->tun
[i
]->state
= DEMUX_PV_STATE_DOWNING
;
2034 flush_workqueue(ctx
->wq
);
2035 for (i
= 0; i
< dev
->dev
->caps
.sqp_demux
; i
++) {
2036 destroy_pv_resources(dev
, i
, ctx
->port
, ctx
->tun
[i
], 0);
2037 free_pv_object(dev
, i
, ctx
->port
);
2040 destroy_workqueue(ctx
->ud_wq
);
2041 destroy_workqueue(ctx
->wq
);
2045 static void mlx4_ib_master_tunnels(struct mlx4_ib_dev
*dev
, int do_init
)
2049 if (!mlx4_is_master(dev
->dev
))
2051 /* initialize or tear down tunnel QPs for the master */
2052 for (i
= 0; i
< dev
->dev
->caps
.num_ports
; i
++)
2053 mlx4_ib_tunnels_update(dev
, mlx4_master_func_num(dev
->dev
), i
+ 1, do_init
);
2057 int mlx4_ib_init_sriov(struct mlx4_ib_dev
*dev
)
2062 if (!mlx4_is_mfunc(dev
->dev
))
2065 dev
->sriov
.is_going_down
= 0;
2066 spin_lock_init(&dev
->sriov
.going_down_lock
);
2067 mlx4_ib_cm_paravirt_init(dev
);
2069 mlx4_ib_warn(&dev
->ib_dev
, "multi-function enabled\n");
2071 if (mlx4_is_slave(dev
->dev
)) {
2072 mlx4_ib_warn(&dev
->ib_dev
, "operating in qp1 tunnel mode\n");
2076 for (i
= 0; i
< dev
->dev
->caps
.sqp_demux
; i
++) {
2077 if (i
== mlx4_master_func_num(dev
->dev
))
2078 mlx4_put_slave_node_guid(dev
->dev
, i
, dev
->ib_dev
.node_guid
);
2080 mlx4_put_slave_node_guid(dev
->dev
, i
, mlx4_ib_gen_node_guid());
2083 err
= mlx4_ib_init_alias_guid_service(dev
);
2085 mlx4_ib_warn(&dev
->ib_dev
, "Failed init alias guid process.\n");
2088 err
= mlx4_ib_device_register_sysfs(dev
);
2090 mlx4_ib_warn(&dev
->ib_dev
, "Failed to register sysfs\n");
2094 mlx4_ib_warn(&dev
->ib_dev
, "initializing demux service for %d qp1 clients\n",
2095 dev
->dev
->caps
.sqp_demux
);
2096 for (i
= 0; i
< dev
->num_ports
; i
++) {
2098 err
= __mlx4_ib_query_gid(&dev
->ib_dev
, i
+ 1, 0, &gid
, 1);
2101 dev
->sriov
.demux
[i
].guid_cache
[0] = gid
.global
.interface_id
;
2102 err
= alloc_pv_object(dev
, mlx4_master_func_num(dev
->dev
), i
+ 1,
2103 &dev
->sriov
.sqps
[i
]);
2106 err
= mlx4_ib_alloc_demux_ctx(dev
, &dev
->sriov
.demux
[i
], i
+ 1);
2110 mlx4_ib_master_tunnels(dev
, 1);
2114 free_pv_object(dev
, mlx4_master_func_num(dev
->dev
), i
+ 1);
2117 free_pv_object(dev
, mlx4_master_func_num(dev
->dev
), i
+ 1);
2118 mlx4_ib_free_demux_ctx(&dev
->sriov
.demux
[i
]);
2120 mlx4_ib_device_unregister_sysfs(dev
);
2123 mlx4_ib_destroy_alias_guid_service(dev
);
2126 mlx4_ib_cm_paravirt_clean(dev
, -1);
2131 void mlx4_ib_close_sriov(struct mlx4_ib_dev
*dev
)
2134 unsigned long flags
;
2136 if (!mlx4_is_mfunc(dev
->dev
))
2139 spin_lock_irqsave(&dev
->sriov
.going_down_lock
, flags
);
2140 dev
->sriov
.is_going_down
= 1;
2141 spin_unlock_irqrestore(&dev
->sriov
.going_down_lock
, flags
);
2142 if (mlx4_is_master(dev
->dev
)) {
2143 for (i
= 0; i
< dev
->num_ports
; i
++) {
2144 flush_workqueue(dev
->sriov
.demux
[i
].ud_wq
);
2145 mlx4_ib_free_sqp_ctx(dev
->sriov
.sqps
[i
]);
2146 kfree(dev
->sriov
.sqps
[i
]);
2147 dev
->sriov
.sqps
[i
] = NULL
;
2148 mlx4_ib_free_demux_ctx(&dev
->sriov
.demux
[i
]);
2151 mlx4_ib_cm_paravirt_clean(dev
, -1);
2152 mlx4_ib_destroy_alias_guid_service(dev
);
2153 mlx4_ib_device_unregister_sysfs(dev
);