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Commit bf808b50 authored by Kaike Wan's avatar Kaike Wan Committed by Doug Ledford
Browse files

IB/hfi1: Add kernel receive context info to debugfs 



Reviewed-by: default avatarMike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: default avatarKaike Wan <kaike.wan@intel.com>
Signed-off-by: default avatarDennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: default avatarDoug Ledford <dledford@redhat.com>
parent 61654679

drivers/infiniband/hw/hfi1/debugfs.c

+47 −0
Original line number Diff line number Diff line
@@ -368,6 +368,52 @@ DEBUGFS_SEQ_FILE_OPS(sdes); 
DEBUGFS_SEQ_FILE_OPEN(sdes)

DEBUGFS_FILE_OPS(sdes);



static void *_rcds_seq_start(struct seq_file *s, loff_t *pos)

{

	struct hfi1_ibdev *ibd;

	struct hfi1_devdata *dd;



	ibd = (struct hfi1_ibdev *)s->private;

	dd = dd_from_dev(ibd);

	if (!dd->rcd || *pos >= dd->n_krcv_queues)

		return NULL;

	return pos;

}



static void *_rcds_seq_next(struct seq_file *s, void *v, loff_t *pos)

{

	struct hfi1_ibdev *ibd = (struct hfi1_ibdev *)s->private;

	struct hfi1_devdata *dd = dd_from_dev(ibd);



	++*pos;

	if (!dd->rcd || *pos >= dd->n_krcv_queues)

		return NULL;

	return pos;

}



static void _rcds_seq_stop(struct seq_file *s, void *v)

{

}



static int _rcds_seq_show(struct seq_file *s, void *v)

{

	struct hfi1_ibdev *ibd = (struct hfi1_ibdev *)s->private;

	struct hfi1_devdata *dd = dd_from_dev(ibd);

	struct hfi1_ctxtdata *rcd;

	loff_t *spos = v;

	loff_t i = *spos;



	rcd = hfi1_rcd_get_by_index(dd, i);

	if (rcd)

		seqfile_dump_rcd(s, rcd);

	hfi1_rcd_put(rcd);

	return 0;

}



DEBUGFS_SEQ_FILE_OPS(rcds);

DEBUGFS_SEQ_FILE_OPEN(rcds)

DEBUGFS_FILE_OPS(rcds);



/* read the per-device counters */

static ssize_t dev_counters_read(struct file *file, char __user *buf,

				 size_t count, loff_t *ppos)
@@ -1321,6 +1367,7 @@ void hfi1_dbg_ibdev_init(struct hfi1_ibdev *ibd) 
	DEBUGFS_SEQ_FILE_CREATE(ctx_stats, ibd->hfi1_ibdev_dbg, ibd);

	DEBUGFS_SEQ_FILE_CREATE(qp_stats, ibd->hfi1_ibdev_dbg, ibd);

	DEBUGFS_SEQ_FILE_CREATE(sdes, ibd->hfi1_ibdev_dbg, ibd);

	DEBUGFS_SEQ_FILE_CREATE(rcds, ibd->hfi1_ibdev_dbg, ibd);

	DEBUGFS_SEQ_FILE_CREATE(sdma_cpu_list, ibd->hfi1_ibdev_dbg, ibd);

	/* dev counter files */

	for (i = 0; i < ARRAY_SIZE(cntr_ops); i++)

drivers/infiniband/hw/hfi1/driver.c

+59 −0
Original line number Diff line number Diff line
@@ -1689,3 +1689,62 @@ int process_receive_invalid(struct hfi1_packet *packet) 
		   rhf_rcv_type(packet->rhf));

	return RHF_RCV_CONTINUE;

}



void seqfile_dump_rcd(struct seq_file *s, struct hfi1_ctxtdata *rcd)

{

	struct hfi1_packet packet;

	struct ps_mdata mdata;



	seq_printf(s, "Rcd %u: RcvHdr cnt %u entsize %u %s head %llu tail %llu\n",

		   rcd->ctxt, rcd->rcvhdrq_cnt, rcd->rcvhdrqentsize,

		   HFI1_CAP_KGET_MASK(rcd->flags, DMA_RTAIL) ?

		   "dma_rtail" : "nodma_rtail",

		   read_uctxt_csr(rcd->dd, rcd->ctxt, RCV_HDR_HEAD) &

		   RCV_HDR_HEAD_HEAD_MASK,

		   read_uctxt_csr(rcd->dd, rcd->ctxt, RCV_HDR_TAIL));



	init_packet(rcd, &packet);

	init_ps_mdata(&mdata, &packet);



	while (1) {

		struct hfi1_devdata *dd = rcd->dd;

		__le32 *rhf_addr = (__le32 *)rcd->rcvhdrq + mdata.ps_head +

					 dd->rhf_offset;

		struct ib_header *hdr;

		u64 rhf = rhf_to_cpu(rhf_addr);

		u32 etype = rhf_rcv_type(rhf), qpn;

		u8 opcode;

		u32 psn;

		u8 lnh;



		if (ps_done(&mdata, rhf, rcd))

			break;



		if (ps_skip(&mdata, rhf, rcd))

			goto next;



		if (etype > RHF_RCV_TYPE_IB)

			goto next;



		packet.hdr = hfi1_get_msgheader(dd, rhf_addr);

		hdr = packet.hdr;



		lnh = be16_to_cpu(hdr->lrh[0]) & 3;



		if (lnh == HFI1_LRH_BTH)

			packet.ohdr = &hdr->u.oth;

		else if (lnh == HFI1_LRH_GRH)

			packet.ohdr = &hdr->u.l.oth;

		else

			goto next; /* just in case */



		opcode = (be32_to_cpu(packet.ohdr->bth[0]) >> 24);

		qpn = be32_to_cpu(packet.ohdr->bth[1]) & RVT_QPN_MASK;

		psn = mask_psn(be32_to_cpu(packet.ohdr->bth[2]));



		seq_printf(s, "\tEnt %u: opcode 0x%x, qpn 0x%x, psn 0x%x\n",

			   mdata.ps_head, opcode, qpn, psn);

next:

		update_ps_mdata(&mdata, rcd);

	}

}

drivers/infiniband/hw/hfi1/hfi.h

+1 −0
Original line number Diff line number Diff line
@@ -1987,6 +1987,7 @@ int process_receive_error(struct hfi1_packet *packet); 
int kdeth_process_expected(struct hfi1_packet *packet);

int kdeth_process_eager(struct hfi1_packet *packet);

int process_receive_invalid(struct hfi1_packet *packet);

void seqfile_dump_rcd(struct seq_file *s, struct hfi1_ctxtdata *rcd);



/* global module parameter variables */

extern unsigned int hfi1_max_mtu;