2 * Copyright(c) 2015-2017 Intel Corporation.
4 * This file is provided under a dual BSD/GPLv2 license. When using or
5 * redistributing this file, you may do so under either license.
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of version 2 of the GNU General Public License as
11 * published by the Free Software Foundation.
13 * This program is distributed in the hope that it will be useful, but
14 * WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * General Public License for more details.
20 * Redistribution and use in source and binary forms, with or without
21 * modification, are permitted provided that the following conditions
24 * - Redistributions of source code must retain the above copyright
25 * notice, this list of conditions and the following disclaimer.
26 * - Redistributions in binary form must reproduce the above copyright
27 * notice, this list of conditions and the following disclaimer in
28 * the documentation and/or other materials provided with the
30 * - Neither the name of Intel Corporation nor the names of its
31 * contributors may be used to endorse or promote products derived
32 * from this software without specific prior written permission.
34 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
35 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
36 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
37 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
38 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
39 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
40 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
41 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
42 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
43 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
44 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
48 #include <linux/spinlock.h>
49 #include <linux/pci.h>
51 #include <linux/delay.h>
52 #include <linux/netdevice.h>
53 #include <linux/vmalloc.h>
54 #include <linux/module.h>
55 #include <linux/prefetch.h>
56 #include <rdma/ib_verbs.h>
66 #define pr_fmt(fmt) DRIVER_NAME ": " fmt
69 * The size has to be longer than this string, so we can append
70 * board/chip information to it in the initialization code.
72 const char ib_hfi1_version
[] = HFI1_DRIVER_VERSION
"\n";
74 DEFINE_SPINLOCK(hfi1_devs_lock
);
75 LIST_HEAD(hfi1_dev_list
);
76 DEFINE_MUTEX(hfi1_mutex
); /* general driver use */
78 unsigned int hfi1_max_mtu
= HFI1_DEFAULT_MAX_MTU
;
79 module_param_named(max_mtu
, hfi1_max_mtu
, uint
, S_IRUGO
);
80 MODULE_PARM_DESC(max_mtu
, "Set max MTU bytes, default is " __stringify(
81 HFI1_DEFAULT_MAX_MTU
));
83 unsigned int hfi1_cu
= 1;
84 module_param_named(cu
, hfi1_cu
, uint
, S_IRUGO
);
85 MODULE_PARM_DESC(cu
, "Credit return units");
87 unsigned long hfi1_cap_mask
= HFI1_CAP_MASK_DEFAULT
;
88 static int hfi1_caps_set(const char *val
, const struct kernel_param
*kp
);
89 static int hfi1_caps_get(char *buffer
, const struct kernel_param
*kp
);
90 static const struct kernel_param_ops cap_ops
= {
94 module_param_cb(cap_mask
, &cap_ops
, &hfi1_cap_mask
, S_IWUSR
| S_IRUGO
);
95 MODULE_PARM_DESC(cap_mask
, "Bit mask of enabled/disabled HW features");
97 MODULE_LICENSE("Dual BSD/GPL");
98 MODULE_DESCRIPTION("Intel Omni-Path Architecture driver");
99 MODULE_VERSION(HFI1_DRIVER_VERSION
);
102 * MAX_PKT_RCV is the max # if packets processed per receive interrupt.
104 #define MAX_PKT_RECV 64
106 * MAX_PKT_THREAD_RCV is the max # of packets processed before
107 * the qp_wait_list queue is flushed.
109 #define MAX_PKT_RECV_THREAD (MAX_PKT_RECV * 4)
110 #define EGR_HEAD_UPDATE_THRESHOLD 16
112 struct hfi1_ib_stats hfi1_stats
;
114 static int hfi1_caps_set(const char *val
, const struct kernel_param
*kp
)
117 unsigned long *cap_mask_ptr
= (unsigned long *)kp
->arg
,
118 cap_mask
= *cap_mask_ptr
, value
, diff
,
119 write_mask
= ((HFI1_CAP_WRITABLE_MASK
<< HFI1_CAP_USER_SHIFT
) |
120 HFI1_CAP_WRITABLE_MASK
);
122 ret
= kstrtoul(val
, 0, &value
);
124 pr_warn("Invalid module parameter value for 'cap_mask'\n");
127 /* Get the changed bits (except the locked bit) */
128 diff
= value
^ (cap_mask
& ~HFI1_CAP_LOCKED_SMASK
);
130 /* Remove any bits that are not allowed to change after driver load */
131 if (HFI1_CAP_LOCKED() && (diff
& ~write_mask
)) {
132 pr_warn("Ignoring non-writable capability bits %#lx\n",
137 /* Mask off any reserved bits */
138 diff
&= ~HFI1_CAP_RESERVED_MASK
;
139 /* Clear any previously set and changing bits */
141 /* Update the bits with the new capability */
142 cap_mask
|= (value
& diff
);
143 /* Check for any kernel/user restrictions */
144 diff
= (cap_mask
& (HFI1_CAP_MUST_HAVE_KERN
<< HFI1_CAP_USER_SHIFT
)) ^
145 ((cap_mask
& HFI1_CAP_MUST_HAVE_KERN
) << HFI1_CAP_USER_SHIFT
);
147 /* Set the bitmask to the final set */
148 *cap_mask_ptr
= cap_mask
;
153 static int hfi1_caps_get(char *buffer
, const struct kernel_param
*kp
)
155 unsigned long cap_mask
= *(unsigned long *)kp
->arg
;
157 cap_mask
&= ~HFI1_CAP_LOCKED_SMASK
;
158 cap_mask
|= ((cap_mask
& HFI1_CAP_K2U
) << HFI1_CAP_USER_SHIFT
);
160 return scnprintf(buffer
, PAGE_SIZE
, "0x%lx", cap_mask
);
163 const char *get_unit_name(int unit
)
165 static char iname
[16];
167 snprintf(iname
, sizeof(iname
), DRIVER_NAME
"_%u", unit
);
171 const char *get_card_name(struct rvt_dev_info
*rdi
)
173 struct hfi1_ibdev
*ibdev
= container_of(rdi
, struct hfi1_ibdev
, rdi
);
174 struct hfi1_devdata
*dd
= container_of(ibdev
,
175 struct hfi1_devdata
, verbs_dev
);
176 return get_unit_name(dd
->unit
);
179 struct pci_dev
*get_pci_dev(struct rvt_dev_info
*rdi
)
181 struct hfi1_ibdev
*ibdev
= container_of(rdi
, struct hfi1_ibdev
, rdi
);
182 struct hfi1_devdata
*dd
= container_of(ibdev
,
183 struct hfi1_devdata
, verbs_dev
);
188 * Return count of units with at least one port ACTIVE.
190 int hfi1_count_active_units(void)
192 struct hfi1_devdata
*dd
;
193 struct hfi1_pportdata
*ppd
;
195 int pidx
, nunits_active
= 0;
197 spin_lock_irqsave(&hfi1_devs_lock
, flags
);
198 list_for_each_entry(dd
, &hfi1_dev_list
, list
) {
199 if (!(dd
->flags
& HFI1_PRESENT
) || !dd
->kregbase
)
201 for (pidx
= 0; pidx
< dd
->num_pports
; ++pidx
) {
202 ppd
= dd
->pport
+ pidx
;
203 if (ppd
->lid
&& ppd
->linkup
) {
209 spin_unlock_irqrestore(&hfi1_devs_lock
, flags
);
210 return nunits_active
;
214 * Get address of eager buffer from it's index (allocated in chunks, not
217 static inline void *get_egrbuf(const struct hfi1_ctxtdata
*rcd
, u64 rhf
,
220 u32 idx
= rhf_egr_index(rhf
), offset
= rhf_egr_buf_offset(rhf
);
222 *update
|= !(idx
& (rcd
->egrbufs
.threshold
- 1)) && !offset
;
223 return (void *)(((u64
)(rcd
->egrbufs
.rcvtids
[idx
].addr
)) +
224 (offset
* RCV_BUF_BLOCK_SIZE
));
228 * Validate and encode the a given RcvArray Buffer size.
229 * The function will check whether the given size falls within
230 * allowed size ranges for the respective type and, optionally,
231 * return the proper encoding.
233 int hfi1_rcvbuf_validate(u32 size
, u8 type
, u16
*encoded
)
235 if (unlikely(!PAGE_ALIGNED(size
)))
237 if (unlikely(size
< MIN_EAGER_BUFFER
))
240 (type
== PT_EAGER
? MAX_EAGER_BUFFER
: MAX_EXPECTED_BUFFER
))
243 *encoded
= ilog2(size
/ PAGE_SIZE
) + 1;
247 static void rcv_hdrerr(struct hfi1_ctxtdata
*rcd
, struct hfi1_pportdata
*ppd
,
248 struct hfi1_packet
*packet
)
250 struct ib_header
*rhdr
= packet
->hdr
;
251 u32 rte
= rhf_rcv_type_err(packet
->rhf
);
252 int lnh
= ib_get_lnh(rhdr
);
253 struct hfi1_ibport
*ibp
= rcd_to_iport(rcd
);
254 struct hfi1_devdata
*dd
= ppd
->dd
;
255 struct rvt_dev_info
*rdi
= &dd
->verbs_dev
.rdi
;
257 if (packet
->rhf
& (RHF_VCRC_ERR
| RHF_ICRC_ERR
))
260 if (packet
->rhf
& RHF_TID_ERR
) {
261 /* For TIDERR and RC QPs preemptively schedule a NAK */
262 struct ib_other_headers
*ohdr
= NULL
;
263 u32 tlen
= rhf_pkt_len(packet
->rhf
); /* in bytes */
264 u16 lid
= ib_get_dlid(rhdr
);
268 /* Sanity check packet */
273 if (lnh
== HFI1_LRH_BTH
) {
275 } else if (lnh
== HFI1_LRH_GRH
) {
278 ohdr
= &rhdr
->u
.l
.oth
;
279 if (rhdr
->u
.l
.grh
.next_hdr
!= IB_GRH_NEXT_HDR
)
281 vtf
= be32_to_cpu(rhdr
->u
.l
.grh
.version_tclass_flow
);
282 if ((vtf
>> IB_GRH_VERSION_SHIFT
) != IB_GRH_VERSION
)
284 rcv_flags
|= HFI1_HAS_GRH
;
288 /* Get the destination QP number. */
289 qp_num
= be32_to_cpu(ohdr
->bth
[1]) & RVT_QPN_MASK
;
290 if (lid
< be16_to_cpu(IB_MULTICAST_LID_BASE
)) {
295 qp
= rvt_lookup_qpn(rdi
, &ibp
->rvp
, qp_num
);
302 * Handle only RC QPs - for other QP types drop error
305 spin_lock_irqsave(&qp
->r_lock
, flags
);
307 /* Check for valid receive state. */
308 if (!(ib_rvt_state_ops
[qp
->state
] &
309 RVT_PROCESS_RECV_OK
)) {
310 ibp
->rvp
.n_pkt_drops
++;
313 switch (qp
->ibqp
.qp_type
) {
322 /* For now don't handle any other QP types */
326 spin_unlock_irqrestore(&qp
->r_lock
, flags
);
329 } /* Valid packet with TIDErr */
331 /* handle "RcvTypeErr" flags */
333 case RHF_RTE_ERROR_OP_CODE_ERR
:
339 if (rhf_use_egr_bfr(packet
->rhf
))
343 goto drop
; /* this should never happen */
345 if (lnh
== HFI1_LRH_BTH
)
346 bth
= (__be32
*)ebuf
;
347 else if (lnh
== HFI1_LRH_GRH
)
348 bth
= (__be32
*)((char *)ebuf
+ sizeof(struct ib_grh
));
352 opcode
= be32_to_cpu(bth
[0]) >> 24;
355 if (opcode
== IB_OPCODE_CNP
) {
357 * Only in pre-B0 h/w is the CNP_OPCODE handled
358 * via this code path.
360 struct rvt_qp
*qp
= NULL
;
363 u8 svc_type
, sl
, sc5
;
365 sc5
= hfi1_9B_get_sc5(rhdr
, packet
->rhf
);
366 sl
= ibp
->sc_to_sl
[sc5
];
368 lqpn
= be32_to_cpu(bth
[1]) & RVT_QPN_MASK
;
370 qp
= rvt_lookup_qpn(rdi
, &ibp
->rvp
, lqpn
);
376 switch (qp
->ibqp
.qp_type
) {
380 svc_type
= IB_CC_SVCTYPE_UD
;
383 rlid
= ib_get_slid(rhdr
);
384 rqpn
= qp
->remote_qpn
;
385 svc_type
= IB_CC_SVCTYPE_UC
;
391 process_becn(ppd
, sl
, rlid
, lqpn
, rqpn
, svc_type
);
395 packet
->rhf
&= ~RHF_RCV_TYPE_ERR_SMASK
;
406 static inline void init_packet(struct hfi1_ctxtdata
*rcd
,
407 struct hfi1_packet
*packet
)
409 packet
->rsize
= rcd
->rcvhdrqentsize
; /* words */
410 packet
->maxcnt
= rcd
->rcvhdrq_cnt
* packet
->rsize
; /* words */
414 packet
->rhf_addr
= get_rhf_addr(rcd
);
415 packet
->rhf
= rhf_to_cpu(packet
->rhf_addr
);
416 packet
->rhqoff
= rcd
->head
;
418 packet
->rcv_flags
= 0;
421 void hfi1_process_ecn_slowpath(struct rvt_qp
*qp
, struct hfi1_packet
*pkt
,
424 struct hfi1_ibport
*ibp
= to_iport(qp
->ibqp
.device
, qp
->port_num
);
425 struct ib_header
*hdr
= pkt
->hdr
;
426 struct ib_other_headers
*ohdr
= pkt
->ohdr
;
427 struct ib_grh
*grh
= NULL
;
429 u16 rlid
, dlid
= ib_get_dlid(hdr
);
431 bool is_mcast
= false;
433 if (pkt
->rcv_flags
& HFI1_HAS_GRH
)
436 switch (qp
->ibqp
.qp_type
) {
440 rlid
= ib_get_slid(hdr
);
441 rqpn
= be32_to_cpu(ohdr
->u
.ud
.deth
[1]) & RVT_QPN_MASK
;
442 svc_type
= IB_CC_SVCTYPE_UD
;
443 is_mcast
= (dlid
> be16_to_cpu(IB_MULTICAST_LID_BASE
)) &&
444 (dlid
!= be16_to_cpu(IB_LID_PERMISSIVE
));
447 rlid
= rdma_ah_get_dlid(&qp
->remote_ah_attr
);
448 rqpn
= qp
->remote_qpn
;
449 svc_type
= IB_CC_SVCTYPE_UC
;
452 rlid
= rdma_ah_get_dlid(&qp
->remote_ah_attr
);
453 rqpn
= qp
->remote_qpn
;
454 svc_type
= IB_CC_SVCTYPE_RC
;
460 sc
= hfi1_9B_get_sc5(hdr
, pkt
->rhf
);
462 bth1
= be32_to_cpu(ohdr
->bth
[1]);
463 if (do_cnp
&& (bth1
& IB_FECN_SMASK
)) {
464 u16 pkey
= (u16
)be32_to_cpu(ohdr
->bth
[0]);
466 return_cnp(ibp
, qp
, rqpn
, pkey
, dlid
, rlid
, sc
, grh
);
469 if (!is_mcast
&& (bth1
& IB_BECN_SMASK
)) {
470 struct hfi1_pportdata
*ppd
= ppd_from_ibp(ibp
);
471 u32 lqpn
= bth1
& RVT_QPN_MASK
;
472 u8 sl
= ibp
->sc_to_sl
[sc
];
474 process_becn(ppd
, sl
, rlid
, lqpn
, rqpn
, svc_type
);
480 struct hfi1_ctxtdata
*rcd
;
488 static inline void init_ps_mdata(struct ps_mdata
*mdata
,
489 struct hfi1_packet
*packet
)
491 struct hfi1_ctxtdata
*rcd
= packet
->rcd
;
494 mdata
->rsize
= packet
->rsize
;
495 mdata
->maxcnt
= packet
->maxcnt
;
496 mdata
->ps_head
= packet
->rhqoff
;
498 if (HFI1_CAP_KGET_MASK(rcd
->flags
, DMA_RTAIL
)) {
499 mdata
->ps_tail
= get_rcvhdrtail(rcd
);
500 if (rcd
->ctxt
== HFI1_CTRL_CTXT
)
501 mdata
->ps_seq
= rcd
->seq_cnt
;
503 mdata
->ps_seq
= 0; /* not used with DMA_RTAIL */
505 mdata
->ps_tail
= 0; /* used only with DMA_RTAIL*/
506 mdata
->ps_seq
= rcd
->seq_cnt
;
510 static inline int ps_done(struct ps_mdata
*mdata
, u64 rhf
,
511 struct hfi1_ctxtdata
*rcd
)
513 if (HFI1_CAP_KGET_MASK(rcd
->flags
, DMA_RTAIL
))
514 return mdata
->ps_head
== mdata
->ps_tail
;
515 return mdata
->ps_seq
!= rhf_rcv_seq(rhf
);
518 static inline int ps_skip(struct ps_mdata
*mdata
, u64 rhf
,
519 struct hfi1_ctxtdata
*rcd
)
522 * Control context can potentially receive an invalid rhf.
525 if ((rcd
->ctxt
== HFI1_CTRL_CTXT
) && (mdata
->ps_head
!= mdata
->ps_tail
))
526 return mdata
->ps_seq
!= rhf_rcv_seq(rhf
);
531 static inline void update_ps_mdata(struct ps_mdata
*mdata
,
532 struct hfi1_ctxtdata
*rcd
)
534 mdata
->ps_head
+= mdata
->rsize
;
535 if (mdata
->ps_head
>= mdata
->maxcnt
)
538 /* Control context must do seq counting */
539 if (!HFI1_CAP_KGET_MASK(rcd
->flags
, DMA_RTAIL
) ||
540 (rcd
->ctxt
== HFI1_CTRL_CTXT
)) {
541 if (++mdata
->ps_seq
> 13)
547 * prescan_rxq - search through the receive queue looking for packets
548 * containing Excplicit Congestion Notifications (FECNs, or BECNs).
549 * When an ECN is found, process the Congestion Notification, and toggle
551 * This is declared as a macro to allow quick checking of the port to avoid
552 * the overhead of a function call if not enabled.
554 #define prescan_rxq(rcd, packet) \
556 if (rcd->ppd->cc_prescan) \
557 __prescan_rxq(packet); \
559 static void __prescan_rxq(struct hfi1_packet
*packet
)
561 struct hfi1_ctxtdata
*rcd
= packet
->rcd
;
562 struct ps_mdata mdata
;
564 init_ps_mdata(&mdata
, packet
);
567 struct hfi1_devdata
*dd
= rcd
->dd
;
568 struct hfi1_ibport
*ibp
= rcd_to_iport(rcd
);
569 __le32
*rhf_addr
= (__le32
*)rcd
->rcvhdrq
+ mdata
.ps_head
+
572 struct ib_header
*hdr
;
573 struct rvt_dev_info
*rdi
= &dd
->verbs_dev
.rdi
;
574 u64 rhf
= rhf_to_cpu(rhf_addr
);
575 u32 etype
= rhf_rcv_type(rhf
), qpn
, bth1
;
579 if (ps_done(&mdata
, rhf
, rcd
))
582 if (ps_skip(&mdata
, rhf
, rcd
))
585 if (etype
!= RHF_RCV_TYPE_IB
)
588 packet
->hdr
= hfi1_get_msgheader(dd
, rhf_addr
);
590 lnh
= ib_get_lnh(hdr
);
592 if (lnh
== HFI1_LRH_BTH
) {
593 packet
->ohdr
= &hdr
->u
.oth
;
594 } else if (lnh
== HFI1_LRH_GRH
) {
595 packet
->ohdr
= &hdr
->u
.l
.oth
;
596 packet
->rcv_flags
|= HFI1_HAS_GRH
;
598 goto next
; /* just in case */
601 bth1
= be32_to_cpu(packet
->ohdr
->bth
[1]);
602 is_ecn
= !!(bth1
& (IB_FECN_SMASK
| IB_BECN_SMASK
));
607 qpn
= bth1
& RVT_QPN_MASK
;
609 qp
= rvt_lookup_qpn(rdi
, &ibp
->rvp
, qpn
);
616 process_ecn(qp
, packet
, true);
619 /* turn off BECN, FECN */
620 bth1
&= ~(IB_FECN_SMASK
| IB_BECN_SMASK
);
621 packet
->ohdr
->bth
[1] = cpu_to_be32(bth1
);
623 update_ps_mdata(&mdata
, rcd
);
627 static void process_rcv_qp_work(struct hfi1_ctxtdata
*rcd
)
629 struct rvt_qp
*qp
, *nqp
;
632 * Iterate over all QPs waiting to respond.
633 * The list won't change since the IRQ is only run on one CPU.
635 list_for_each_entry_safe(qp
, nqp
, &rcd
->qp_wait_list
, rspwait
) {
636 list_del_init(&qp
->rspwait
);
637 if (qp
->r_flags
& RVT_R_RSP_NAK
) {
638 qp
->r_flags
&= ~RVT_R_RSP_NAK
;
639 hfi1_send_rc_ack(rcd
, qp
, 0);
641 if (qp
->r_flags
& RVT_R_RSP_SEND
) {
644 qp
->r_flags
&= ~RVT_R_RSP_SEND
;
645 spin_lock_irqsave(&qp
->s_lock
, flags
);
646 if (ib_rvt_state_ops
[qp
->state
] &
647 RVT_PROCESS_OR_FLUSH_SEND
)
648 hfi1_schedule_send(qp
);
649 spin_unlock_irqrestore(&qp
->s_lock
, flags
);
655 static noinline
int max_packet_exceeded(struct hfi1_packet
*packet
, int thread
)
658 if ((packet
->numpkt
& (MAX_PKT_RECV_THREAD
- 1)) == 0)
659 /* allow defered processing */
660 process_rcv_qp_work(packet
->rcd
);
664 this_cpu_inc(*packet
->rcd
->dd
->rcv_limit
);
665 return RCV_PKT_LIMIT
;
669 static inline int check_max_packet(struct hfi1_packet
*packet
, int thread
)
671 int ret
= RCV_PKT_OK
;
673 if (unlikely((packet
->numpkt
& (MAX_PKT_RECV
- 1)) == 0))
674 ret
= max_packet_exceeded(packet
, thread
);
678 static noinline
int skip_rcv_packet(struct hfi1_packet
*packet
, int thread
)
682 /* Set up for the next packet */
683 packet
->rhqoff
+= packet
->rsize
;
684 if (packet
->rhqoff
>= packet
->maxcnt
)
688 ret
= check_max_packet(packet
, thread
);
690 packet
->rhf_addr
= (__le32
*)packet
->rcd
->rcvhdrq
+ packet
->rhqoff
+
691 packet
->rcd
->dd
->rhf_offset
;
692 packet
->rhf
= rhf_to_cpu(packet
->rhf_addr
);
697 static inline int process_rcv_packet(struct hfi1_packet
*packet
, int thread
)
701 packet
->hdr
= hfi1_get_msgheader(packet
->rcd
->dd
,
703 packet
->hlen
= (u8
*)packet
->rhf_addr
- (u8
*)packet
->hdr
;
704 packet
->etype
= rhf_rcv_type(packet
->rhf
);
706 packet
->tlen
= rhf_pkt_len(packet
->rhf
); /* in bytes */
707 /* retrieve eager buffer details */
709 if (rhf_use_egr_bfr(packet
->rhf
)) {
710 packet
->etail
= rhf_egr_index(packet
->rhf
);
711 packet
->ebuf
= get_egrbuf(packet
->rcd
, packet
->rhf
,
714 * Prefetch the contents of the eager buffer. It is
715 * OK to send a negative length to prefetch_range().
716 * The +2 is the size of the RHF.
718 prefetch_range(packet
->ebuf
,
719 packet
->tlen
- ((packet
->rcd
->rcvhdrqentsize
-
720 (rhf_hdrq_offset(packet
->rhf
)
725 * Call a type specific handler for the packet. We
726 * should be able to trust that etype won't be beyond
727 * the range of valid indexes. If so something is really
728 * wrong and we can probably just let things come
729 * crashing down. There is no need to eat another
730 * comparison in this performance critical code.
732 packet
->rcd
->dd
->rhf_rcv_function_map
[packet
->etype
](packet
);
735 /* Set up for the next packet */
736 packet
->rhqoff
+= packet
->rsize
;
737 if (packet
->rhqoff
>= packet
->maxcnt
)
740 ret
= check_max_packet(packet
, thread
);
742 packet
->rhf_addr
= (__le32
*)packet
->rcd
->rcvhdrq
+ packet
->rhqoff
+
743 packet
->rcd
->dd
->rhf_offset
;
744 packet
->rhf
= rhf_to_cpu(packet
->rhf_addr
);
749 static inline void process_rcv_update(int last
, struct hfi1_packet
*packet
)
752 * Update head regs etc., every 16 packets, if not last pkt,
753 * to help prevent rcvhdrq overflows, when many packets
754 * are processed and queue is nearly full.
755 * Don't request an interrupt for intermediate updates.
757 if (!last
&& !(packet
->numpkt
& 0xf)) {
758 update_usrhead(packet
->rcd
, packet
->rhqoff
, packet
->updegr
,
759 packet
->etail
, 0, 0);
762 packet
->rcv_flags
= 0;
765 static inline void finish_packet(struct hfi1_packet
*packet
)
768 * Nothing we need to free for the packet.
770 * The only thing we need to do is a final update and call for an
773 update_usrhead(packet
->rcd
, packet
->rcd
->head
, packet
->updegr
,
774 packet
->etail
, rcv_intr_dynamic
, packet
->numpkt
);
778 * Handle receive interrupts when using the no dma rtail option.
780 int handle_receive_interrupt_nodma_rtail(struct hfi1_ctxtdata
*rcd
, int thread
)
783 int last
= RCV_PKT_OK
;
784 struct hfi1_packet packet
;
786 init_packet(rcd
, &packet
);
787 seq
= rhf_rcv_seq(packet
.rhf
);
788 if (seq
!= rcd
->seq_cnt
) {
793 prescan_rxq(rcd
, &packet
);
795 while (last
== RCV_PKT_OK
) {
796 last
= process_rcv_packet(&packet
, thread
);
797 seq
= rhf_rcv_seq(packet
.rhf
);
798 if (++rcd
->seq_cnt
> 13)
800 if (seq
!= rcd
->seq_cnt
)
802 process_rcv_update(last
, &packet
);
804 process_rcv_qp_work(rcd
);
805 rcd
->head
= packet
.rhqoff
;
807 finish_packet(&packet
);
811 int handle_receive_interrupt_dma_rtail(struct hfi1_ctxtdata
*rcd
, int thread
)
814 int last
= RCV_PKT_OK
;
815 struct hfi1_packet packet
;
817 init_packet(rcd
, &packet
);
818 hdrqtail
= get_rcvhdrtail(rcd
);
819 if (packet
.rhqoff
== hdrqtail
) {
823 smp_rmb(); /* prevent speculative reads of dma'ed hdrq */
825 prescan_rxq(rcd
, &packet
);
827 while (last
== RCV_PKT_OK
) {
828 last
= process_rcv_packet(&packet
, thread
);
829 if (packet
.rhqoff
== hdrqtail
)
831 process_rcv_update(last
, &packet
);
833 process_rcv_qp_work(rcd
);
834 rcd
->head
= packet
.rhqoff
;
836 finish_packet(&packet
);
840 static inline void set_nodma_rtail(struct hfi1_devdata
*dd
, u8 ctxt
)
845 * For dynamically allocated kernel contexts (like vnic) switch
846 * interrupt handler only for that context. Otherwise, switch
847 * interrupt handler for all statically allocated kernel contexts.
849 if (ctxt
>= dd
->first_dyn_alloc_ctxt
) {
850 dd
->rcd
[ctxt
]->do_interrupt
=
851 &handle_receive_interrupt_nodma_rtail
;
855 for (i
= HFI1_CTRL_CTXT
+ 1; i
< dd
->first_dyn_alloc_ctxt
; i
++)
856 dd
->rcd
[i
]->do_interrupt
=
857 &handle_receive_interrupt_nodma_rtail
;
860 static inline void set_dma_rtail(struct hfi1_devdata
*dd
, u8 ctxt
)
865 * For dynamically allocated kernel contexts (like vnic) switch
866 * interrupt handler only for that context. Otherwise, switch
867 * interrupt handler for all statically allocated kernel contexts.
869 if (ctxt
>= dd
->first_dyn_alloc_ctxt
) {
870 dd
->rcd
[ctxt
]->do_interrupt
=
871 &handle_receive_interrupt_dma_rtail
;
875 for (i
= HFI1_CTRL_CTXT
+ 1; i
< dd
->first_dyn_alloc_ctxt
; i
++)
876 dd
->rcd
[i
]->do_interrupt
=
877 &handle_receive_interrupt_dma_rtail
;
880 void set_all_slowpath(struct hfi1_devdata
*dd
)
884 /* HFI1_CTRL_CTXT must always use the slow path interrupt handler */
885 for (i
= HFI1_CTRL_CTXT
+ 1; i
< dd
->num_rcv_contexts
; i
++) {
886 struct hfi1_ctxtdata
*rcd
= dd
->rcd
[i
];
888 if ((i
< dd
->first_dyn_alloc_ctxt
) ||
889 (rcd
&& rcd
->sc
&& (rcd
->sc
->type
== SC_KERNEL
)))
890 rcd
->do_interrupt
= &handle_receive_interrupt
;
894 static inline int set_armed_to_active(struct hfi1_ctxtdata
*rcd
,
895 struct hfi1_packet
*packet
,
896 struct hfi1_devdata
*dd
)
898 struct work_struct
*lsaw
= &rcd
->ppd
->linkstate_active_work
;
899 struct ib_header
*hdr
= hfi1_get_msgheader(packet
->rcd
->dd
,
901 u8 etype
= rhf_rcv_type(packet
->rhf
);
903 if (etype
== RHF_RCV_TYPE_IB
&&
904 hfi1_9B_get_sc5(hdr
, packet
->rhf
) != 0xf) {
905 int hwstate
= read_logical_state(dd
);
907 if (hwstate
!= LSTATE_ACTIVE
) {
908 dd_dev_info(dd
, "Unexpected link state %d\n", hwstate
);
912 queue_work(rcd
->ppd
->hfi1_wq
, lsaw
);
919 * handle_receive_interrupt - receive a packet
922 * Called from interrupt handler for errors or receive interrupt.
923 * This is the slow path interrupt handler.
925 int handle_receive_interrupt(struct hfi1_ctxtdata
*rcd
, int thread
)
927 struct hfi1_devdata
*dd
= rcd
->dd
;
929 int needset
, last
= RCV_PKT_OK
;
930 struct hfi1_packet packet
;
933 /* Control context will always use the slow path interrupt handler */
934 needset
= (rcd
->ctxt
== HFI1_CTRL_CTXT
) ? 0 : 1;
936 init_packet(rcd
, &packet
);
938 if (!HFI1_CAP_KGET_MASK(rcd
->flags
, DMA_RTAIL
)) {
939 u32 seq
= rhf_rcv_seq(packet
.rhf
);
941 if (seq
!= rcd
->seq_cnt
) {
947 hdrqtail
= get_rcvhdrtail(rcd
);
948 if (packet
.rhqoff
== hdrqtail
) {
952 smp_rmb(); /* prevent speculative reads of dma'ed hdrq */
955 * Control context can potentially receive an invalid
956 * rhf. Drop such packets.
958 if (rcd
->ctxt
== HFI1_CTRL_CTXT
) {
959 u32 seq
= rhf_rcv_seq(packet
.rhf
);
961 if (seq
!= rcd
->seq_cnt
)
966 prescan_rxq(rcd
, &packet
);
968 while (last
== RCV_PKT_OK
) {
969 if (unlikely(dd
->do_drop
&&
970 atomic_xchg(&dd
->drop_packet
, DROP_PACKET_OFF
) ==
974 /* On to the next packet */
975 packet
.rhqoff
+= packet
.rsize
;
976 packet
.rhf_addr
= (__le32
*)rcd
->rcvhdrq
+
979 packet
.rhf
= rhf_to_cpu(packet
.rhf_addr
);
981 } else if (skip_pkt
) {
982 last
= skip_rcv_packet(&packet
, thread
);
985 /* Auto activate link on non-SC15 packet receive */
986 if (unlikely(rcd
->ppd
->host_link_state
==
988 set_armed_to_active(rcd
, &packet
, dd
))
990 last
= process_rcv_packet(&packet
, thread
);
993 if (!HFI1_CAP_KGET_MASK(rcd
->flags
, DMA_RTAIL
)) {
994 u32 seq
= rhf_rcv_seq(packet
.rhf
);
996 if (++rcd
->seq_cnt
> 13)
998 if (seq
!= rcd
->seq_cnt
)
1001 dd_dev_info(dd
, "Switching to NO_DMA_RTAIL\n");
1002 set_nodma_rtail(dd
, rcd
->ctxt
);
1006 if (packet
.rhqoff
== hdrqtail
)
1007 last
= RCV_PKT_DONE
;
1009 * Control context can potentially receive an invalid
1010 * rhf. Drop such packets.
1012 if (rcd
->ctxt
== HFI1_CTRL_CTXT
) {
1013 u32 seq
= rhf_rcv_seq(packet
.rhf
);
1015 if (++rcd
->seq_cnt
> 13)
1017 if (!last
&& (seq
!= rcd
->seq_cnt
))
1023 "Switching to DMA_RTAIL\n");
1024 set_dma_rtail(dd
, rcd
->ctxt
);
1029 process_rcv_update(last
, &packet
);
1032 process_rcv_qp_work(rcd
);
1033 rcd
->head
= packet
.rhqoff
;
1037 * Always write head at end, and setup rcv interrupt, even
1038 * if no packets were processed.
1040 finish_packet(&packet
);
1045 * We may discover in the interrupt that the hardware link state has
1046 * changed from ARMED to ACTIVE (due to the arrival of a non-SC15 packet),
1047 * and we need to update the driver's notion of the link state. We cannot
1048 * run set_link_state from interrupt context, so we queue this function on
1051 * We delay the regular interrupt processing until after the state changes
1052 * so that the link will be in the correct state by the time any application
1053 * we wake up attempts to send a reply to any message it received.
1054 * (Subsequent receive interrupts may possibly force the wakeup before we
1055 * update the link state.)
1057 * The rcd is freed in hfi1_free_ctxtdata after hfi1_postinit_cleanup invokes
1058 * dd->f_cleanup(dd) to disable the interrupt handler and flush workqueues,
1059 * so we're safe from use-after-free of the rcd.
1061 void receive_interrupt_work(struct work_struct
*work
)
1063 struct hfi1_pportdata
*ppd
= container_of(work
, struct hfi1_pportdata
,
1064 linkstate_active_work
);
1065 struct hfi1_devdata
*dd
= ppd
->dd
;
1068 /* Received non-SC15 packet implies neighbor_normal */
1069 ppd
->neighbor_normal
= 1;
1070 set_link_state(ppd
, HLS_UP_ACTIVE
);
1073 * Interrupt all statically allocated kernel contexts that could
1074 * have had an interrupt during auto activation.
1076 for (i
= HFI1_CTRL_CTXT
; i
< dd
->first_dyn_alloc_ctxt
; i
++)
1077 force_recv_intr(dd
->rcd
[i
]);
1081 * Convert a given MTU size to the on-wire MAD packet enumeration.
1082 * Return -1 if the size is invalid.
1084 int mtu_to_enum(u32 mtu
, int default_if_bad
)
1087 case 0: return OPA_MTU_0
;
1088 case 256: return OPA_MTU_256
;
1089 case 512: return OPA_MTU_512
;
1090 case 1024: return OPA_MTU_1024
;
1091 case 2048: return OPA_MTU_2048
;
1092 case 4096: return OPA_MTU_4096
;
1093 case 8192: return OPA_MTU_8192
;
1094 case 10240: return OPA_MTU_10240
;
1096 return default_if_bad
;
1099 u16
enum_to_mtu(int mtu
)
1102 case OPA_MTU_0
: return 0;
1103 case OPA_MTU_256
: return 256;
1104 case OPA_MTU_512
: return 512;
1105 case OPA_MTU_1024
: return 1024;
1106 case OPA_MTU_2048
: return 2048;
1107 case OPA_MTU_4096
: return 4096;
1108 case OPA_MTU_8192
: return 8192;
1109 case OPA_MTU_10240
: return 10240;
1110 default: return 0xffff;
1115 * set_mtu - set the MTU
1116 * @ppd: the per port data
1118 * We can handle "any" incoming size, the issue here is whether we
1119 * need to restrict our outgoing size. We do not deal with what happens
1120 * to programs that are already running when the size changes.
1122 int set_mtu(struct hfi1_pportdata
*ppd
)
1124 struct hfi1_devdata
*dd
= ppd
->dd
;
1125 int i
, drain
, ret
= 0, is_up
= 0;
1128 for (i
= 0; i
< ppd
->vls_supported
; i
++)
1129 if (ppd
->ibmtu
< dd
->vld
[i
].mtu
)
1130 ppd
->ibmtu
= dd
->vld
[i
].mtu
;
1131 ppd
->ibmaxlen
= ppd
->ibmtu
+ lrh_max_header_bytes(ppd
->dd
);
1133 mutex_lock(&ppd
->hls_lock
);
1134 if (ppd
->host_link_state
== HLS_UP_INIT
||
1135 ppd
->host_link_state
== HLS_UP_ARMED
||
1136 ppd
->host_link_state
== HLS_UP_ACTIVE
)
1139 drain
= !is_ax(dd
) && is_up
;
1143 * MTU is specified per-VL. To ensure that no packet gets
1144 * stuck (due, e.g., to the MTU for the packet's VL being
1145 * reduced), empty the per-VL FIFOs before adjusting MTU.
1147 ret
= stop_drain_data_vls(dd
);
1150 dd_dev_err(dd
, "%s: cannot stop/drain VLs - refusing to change per-VL MTUs\n",
1155 hfi1_set_ib_cfg(ppd
, HFI1_IB_CFG_MTU
, 0);
1158 open_fill_data_vls(dd
); /* reopen all VLs */
1161 mutex_unlock(&ppd
->hls_lock
);
1166 int hfi1_set_lid(struct hfi1_pportdata
*ppd
, u32 lid
, u8 lmc
)
1168 struct hfi1_devdata
*dd
= ppd
->dd
;
1172 hfi1_set_ib_cfg(ppd
, HFI1_IB_CFG_LIDLMC
, 0);
1174 dd_dev_info(dd
, "port %u: got a lid: 0x%x\n", ppd
->port
, lid
);
1179 void shutdown_led_override(struct hfi1_pportdata
*ppd
)
1181 struct hfi1_devdata
*dd
= ppd
->dd
;
1184 * This pairs with the memory barrier in hfi1_start_led_override to
1185 * ensure that we read the correct state of LED beaconing represented
1186 * by led_override_timer_active
1189 if (atomic_read(&ppd
->led_override_timer_active
)) {
1190 del_timer_sync(&ppd
->led_override_timer
);
1191 atomic_set(&ppd
->led_override_timer_active
, 0);
1192 /* Ensure the atomic_set is visible to all CPUs */
1196 /* Hand control of the LED to the DC for normal operation */
1197 write_csr(dd
, DCC_CFG_LED_CNTRL
, 0);
1200 static void run_led_override(unsigned long opaque
)
1202 struct hfi1_pportdata
*ppd
= (struct hfi1_pportdata
*)opaque
;
1203 struct hfi1_devdata
*dd
= ppd
->dd
;
1204 unsigned long timeout
;
1207 if (!(dd
->flags
& HFI1_INITTED
))
1210 phase_idx
= ppd
->led_override_phase
& 1;
1212 setextled(dd
, phase_idx
);
1214 timeout
= ppd
->led_override_vals
[phase_idx
];
1216 /* Set up for next phase */
1217 ppd
->led_override_phase
= !ppd
->led_override_phase
;
1219 mod_timer(&ppd
->led_override_timer
, jiffies
+ timeout
);
1223 * To have the LED blink in a particular pattern, provide timeon and timeoff
1225 * To turn off custom blinking and return to normal operation, use
1226 * shutdown_led_override()
1228 void hfi1_start_led_override(struct hfi1_pportdata
*ppd
, unsigned int timeon
,
1229 unsigned int timeoff
)
1231 if (!(ppd
->dd
->flags
& HFI1_INITTED
))
1234 /* Convert to jiffies for direct use in timer */
1235 ppd
->led_override_vals
[0] = msecs_to_jiffies(timeoff
);
1236 ppd
->led_override_vals
[1] = msecs_to_jiffies(timeon
);
1238 /* Arbitrarily start from LED on phase */
1239 ppd
->led_override_phase
= 1;
1242 * If the timer has not already been started, do so. Use a "quick"
1243 * timeout so the handler will be called soon to look at our request.
1245 if (!timer_pending(&ppd
->led_override_timer
)) {
1246 setup_timer(&ppd
->led_override_timer
, run_led_override
,
1247 (unsigned long)ppd
);
1248 ppd
->led_override_timer
.expires
= jiffies
+ 1;
1249 add_timer(&ppd
->led_override_timer
);
1250 atomic_set(&ppd
->led_override_timer_active
, 1);
1251 /* Ensure the atomic_set is visible to all CPUs */
1257 * hfi1_reset_device - reset the chip if possible
1258 * @unit: the device to reset
1260 * Whether or not reset is successful, we attempt to re-initialize the chip
1261 * (that is, much like a driver unload/reload). We clear the INITTED flag
1262 * so that the various entry points will fail until we reinitialize. For
1263 * now, we only allow this if no user contexts are open that use chip resources
1265 int hfi1_reset_device(int unit
)
1268 struct hfi1_devdata
*dd
= hfi1_lookup(unit
);
1269 struct hfi1_pportdata
*ppd
;
1270 unsigned long flags
;
1278 dd_dev_info(dd
, "Reset on unit %u requested\n", unit
);
1280 if (!dd
->kregbase
|| !(dd
->flags
& HFI1_PRESENT
)) {
1282 "Invalid unit number %u or not initialized or not present\n",
1288 spin_lock_irqsave(&dd
->uctxt_lock
, flags
);
1290 for (i
= dd
->first_dyn_alloc_ctxt
;
1291 i
< dd
->num_rcv_contexts
; i
++) {
1294 spin_unlock_irqrestore(&dd
->uctxt_lock
, flags
);
1298 spin_unlock_irqrestore(&dd
->uctxt_lock
, flags
);
1300 for (pidx
= 0; pidx
< dd
->num_pports
; ++pidx
) {
1301 ppd
= dd
->pport
+ pidx
;
1303 shutdown_led_override(ppd
);
1305 if (dd
->flags
& HFI1_HAS_SEND_DMA
)
1308 hfi1_reset_cpu_counters(dd
);
1310 ret
= hfi1_init(dd
, 1);
1314 "Reinitialize unit %u after reset failed with %d\n",
1317 dd_dev_info(dd
, "Reinitialized unit %u after resetting\n",
1324 void handle_eflags(struct hfi1_packet
*packet
)
1326 struct hfi1_ctxtdata
*rcd
= packet
->rcd
;
1327 u32 rte
= rhf_rcv_type_err(packet
->rhf
);
1329 rcv_hdrerr(rcd
, rcd
->ppd
, packet
);
1330 if (rhf_err_flags(packet
->rhf
))
1332 "receive context %d: rhf 0x%016llx, errs [ %s%s%s%s%s%s%s%s] rte 0x%x\n",
1333 rcd
->ctxt
, packet
->rhf
,
1334 packet
->rhf
& RHF_K_HDR_LEN_ERR
? "k_hdr_len " : "",
1335 packet
->rhf
& RHF_DC_UNC_ERR
? "dc_unc " : "",
1336 packet
->rhf
& RHF_DC_ERR
? "dc " : "",
1337 packet
->rhf
& RHF_TID_ERR
? "tid " : "",
1338 packet
->rhf
& RHF_LEN_ERR
? "len " : "",
1339 packet
->rhf
& RHF_ECC_ERR
? "ecc " : "",
1340 packet
->rhf
& RHF_VCRC_ERR
? "vcrc " : "",
1341 packet
->rhf
& RHF_ICRC_ERR
? "icrc " : "",
1346 * The following functions are called by the interrupt handler. They are type
1347 * specific handlers for each packet type.
1349 int process_receive_ib(struct hfi1_packet
*packet
)
1351 if (unlikely(hfi1_dbg_fault_packet(packet
)))
1352 return RHF_RCV_CONTINUE
;
1354 trace_hfi1_rcvhdr(packet
->rcd
->ppd
->dd
,
1356 rhf_err_flags(packet
->rhf
),
1361 rhf_egr_index(packet
->rhf
));
1364 (hfi1_dbg_fault_suppress_err(&packet
->rcd
->dd
->verbs_dev
) &&
1365 (packet
->rhf
& RHF_DC_ERR
))))
1366 return RHF_RCV_CONTINUE
;
1368 if (unlikely(rhf_err_flags(packet
->rhf
))) {
1369 handle_eflags(packet
);
1370 return RHF_RCV_CONTINUE
;
1373 hfi1_ib_rcv(packet
);
1374 return RHF_RCV_CONTINUE
;
1377 static inline bool hfi1_is_vnic_packet(struct hfi1_packet
*packet
)
1379 /* Packet received in VNIC context via RSM */
1380 if (packet
->rcd
->is_vnic
)
1383 if ((HFI1_GET_L2_TYPE(packet
->ebuf
) == OPA_VNIC_L2_TYPE
) &&
1384 (HFI1_GET_L4_TYPE(packet
->ebuf
) == OPA_VNIC_L4_ETHR
))
1390 int process_receive_bypass(struct hfi1_packet
*packet
)
1392 struct hfi1_devdata
*dd
= packet
->rcd
->dd
;
1394 if (unlikely(rhf_err_flags(packet
->rhf
))) {
1395 handle_eflags(packet
);
1396 } else if (hfi1_is_vnic_packet(packet
)) {
1397 hfi1_vnic_bypass_rcv(packet
);
1398 return RHF_RCV_CONTINUE
;
1401 dd_dev_err(dd
, "Unsupported bypass packet. Dropping\n");
1402 incr_cntr64(&dd
->sw_rcv_bypass_packet_errors
);
1403 if (!(dd
->err_info_rcvport
.status_and_code
& OPA_EI_STATUS_SMASK
)) {
1404 u64
*flits
= packet
->ebuf
;
1406 if (flits
&& !(packet
->rhf
& RHF_LEN_ERR
)) {
1407 dd
->err_info_rcvport
.packet_flit1
= flits
[0];
1408 dd
->err_info_rcvport
.packet_flit2
=
1409 packet
->tlen
> sizeof(flits
[0]) ? flits
[1] : 0;
1411 dd
->err_info_rcvport
.status_and_code
|=
1412 (OPA_EI_STATUS_SMASK
| BAD_L2_ERR
);
1414 return RHF_RCV_CONTINUE
;
1417 int process_receive_error(struct hfi1_packet
*packet
)
1419 /* KHdrHCRCErr -- KDETH packet with a bad HCRC */
1421 hfi1_dbg_fault_suppress_err(&packet
->rcd
->dd
->verbs_dev
) &&
1422 rhf_rcv_type_err(packet
->rhf
) == 3))
1423 return RHF_RCV_CONTINUE
;
1425 handle_eflags(packet
);
1427 if (unlikely(rhf_err_flags(packet
->rhf
)))
1428 dd_dev_err(packet
->rcd
->dd
,
1429 "Unhandled error packet received. Dropping.\n");
1431 return RHF_RCV_CONTINUE
;
1434 int kdeth_process_expected(struct hfi1_packet
*packet
)
1436 if (unlikely(hfi1_dbg_fault_packet(packet
)))
1437 return RHF_RCV_CONTINUE
;
1438 if (unlikely(rhf_err_flags(packet
->rhf
)))
1439 handle_eflags(packet
);
1441 dd_dev_err(packet
->rcd
->dd
,
1442 "Unhandled expected packet received. Dropping.\n");
1443 return RHF_RCV_CONTINUE
;
1446 int kdeth_process_eager(struct hfi1_packet
*packet
)
1448 if (unlikely(rhf_err_flags(packet
->rhf
)))
1449 handle_eflags(packet
);
1450 if (unlikely(hfi1_dbg_fault_packet(packet
)))
1451 return RHF_RCV_CONTINUE
;
1453 dd_dev_err(packet
->rcd
->dd
,
1454 "Unhandled eager packet received. Dropping.\n");
1455 return RHF_RCV_CONTINUE
;
1458 int process_receive_invalid(struct hfi1_packet
*packet
)
1460 dd_dev_err(packet
->rcd
->dd
, "Invalid packet type %d. Dropping\n",
1461 rhf_rcv_type(packet
->rhf
));
1462 return RHF_RCV_CONTINUE
;