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Commit 056f9c7f authored by Steve Wise's avatar Steve Wise Committed by Doug Ledford
Browse files

iw_cxgb4: dump detailed driver-specific QP information 



Provide a cxgb4-specific function to fill in qp state details.
This allows dumping important c4iw_qp state useful for debugging.

Included in the dump are the t4_sq, t4_rq structs, plus a dump
of the t4_swsqe and t4swrqe descriptors for the first and last
pending entries.

Signed-off-by: default avatarSteve Wise <swise@opengridcomputing.com>
Signed-off-by: default avatarDoug Ledford <dledford@redhat.com>
parent 73937e8a

drivers/infiniband/hw/cxgb4/Makefile

+2 −1
Original line number Diff line number Diff line
@@ -3,4 +3,5 @@ ccflags-y += -Idrivers/net/ethernet/chelsio/libcxgb 


obj-$(CONFIG_INFINIBAND_CXGB4) += iw_cxgb4.o



iw_cxgb4-y :=  device.o cm.o provider.o mem.o cq.o qp.o resource.o ev.o id_table.o
 
iw_cxgb4-y :=  device.o cm.o provider.o mem.o cq.o qp.o resource.o ev.o id_table.o \

	       restrack.o

drivers/infiniband/hw/cxgb4/iw_cxgb4.h

+5 −0
Original line number Diff line number Diff line
@@ -55,6 +55,7 @@ 
#include <rdma/iw_cm.h>

#include <rdma/rdma_netlink.h>

#include <rdma/iw_portmap.h>

#include <rdma/restrack.h>



#include "cxgb4.h"

#include "cxgb4_uld.h"
@@ -1078,4 +1079,8 @@ extern int use_dsgl; 
void c4iw_invalidate_mr(struct c4iw_dev *rhp, u32 rkey);

struct c4iw_wr_wait *c4iw_alloc_wr_wait(gfp_t gfp);



typedef int c4iw_restrack_func(struct sk_buff *msg,

			       struct rdma_restrack_entry *res);

extern c4iw_restrack_func *c4iw_restrack_funcs[RDMA_RESTRACK_MAX];



#endif

drivers/infiniband/hw/cxgb4/provider.c

+8 −0
Original line number Diff line number Diff line
@@ -551,6 +551,13 @@ static struct net_device *get_netdev(struct ib_device *dev, u8 port) 
	return ndev;

}



static int fill_res_entry(struct sk_buff *msg, struct rdma_restrack_entry *res)

{

	return (res->type < ARRAY_SIZE(c4iw_restrack_funcs) &&

		c4iw_restrack_funcs[res->type]) ?

		c4iw_restrack_funcs[res->type](msg, res) : 0;

}



void c4iw_register_device(struct work_struct *work)

{

	int ret;
@@ -645,6 +652,7 @@ void c4iw_register_device(struct work_struct *work) 
	dev->ibdev.iwcm->add_ref = c4iw_qp_add_ref;

	dev->ibdev.iwcm->rem_ref = c4iw_qp_rem_ref;

	dev->ibdev.iwcm->get_qp = c4iw_get_qp;

	dev->ibdev.res.fill_res_entry = fill_res_entry;

	memcpy(dev->ibdev.iwcm->ifname, dev->rdev.lldi.ports[0]->name,

	       sizeof(dev->ibdev.iwcm->ifname));

drivers/infiniband/hw/cxgb4/restrack.c

0 → 100644
+248 −0
Original line number Diff line number Diff line 
/*

 * Copyright (c) 2018 Chelsio, Inc. All rights reserved.

 *

 * This software is available to you under a choice of one of two

 * licenses.  You may choose to be licensed under the terms of the GNU

 * General Public License (GPL) Version 2, available from the file

 * COPYING in the main directory of this source tree, or the

 * OpenIB.org BSD license below:

 *

 *     Redistribution and use in source and binary forms, with or

 *     without modification, are permitted provided that the following

 *     conditions are met:

 *

 *      - Redistributions of source code must retain the above

 *        copyright notice, this list of conditions and the following

 *        disclaimer.

 *

 *      - Redistributions in binary form must reproduce the above

 *        copyright notice, this list of conditions and the following

 *        disclaimer in the documentation and/or other materials

 *        provided with the distribution.

 *

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,

 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF

 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND

 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS

 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN

 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE

 * SOFTWARE.

 */



#include "iw_cxgb4.h"

#include <rdma/restrack.h>

#include <uapi/rdma/rdma_netlink.h>



static int fill_sq(struct sk_buff *msg, struct t4_wq *wq)

{

	/* WQ+SQ */

	if (rdma_nl_put_driver_u32(msg, "sqid", wq->sq.qid))

		goto err;

	if (rdma_nl_put_driver_u32(msg, "flushed", wq->flushed))

		goto err;

	if (rdma_nl_put_driver_u32(msg, "memsize", wq->sq.memsize))

		goto err;

	if (rdma_nl_put_driver_u32(msg, "cidx", wq->sq.cidx))

		goto err;

	if (rdma_nl_put_driver_u32(msg, "pidx", wq->sq.pidx))

		goto err;

	if (rdma_nl_put_driver_u32(msg, "wq_pidx", wq->sq.wq_pidx))

		goto err;

	if (rdma_nl_put_driver_u32(msg, "flush_cidx", wq->sq.flush_cidx))

		goto err;

	if (rdma_nl_put_driver_u32(msg, "in_use", wq->sq.in_use))

		goto err;

	if (rdma_nl_put_driver_u32(msg, "size", wq->sq.size))

		goto err;

	if (rdma_nl_put_driver_u32_hex(msg, "flags", wq->sq.flags))

		goto err;

	return 0;

err:

	return -EMSGSIZE;

}



static int fill_rq(struct sk_buff *msg, struct t4_wq *wq)

{

	/* RQ */

	if (rdma_nl_put_driver_u32(msg, "rqid", wq->rq.qid))

		goto err;

	if (rdma_nl_put_driver_u32(msg, "memsize", wq->rq.memsize))

		goto err;

	if (rdma_nl_put_driver_u32(msg, "cidx", wq->rq.cidx))

		goto err;

	if (rdma_nl_put_driver_u32(msg, "pidx", wq->rq.pidx))

		goto err;

	if (rdma_nl_put_driver_u32(msg, "wq_pidx", wq->rq.wq_pidx))

		goto err;

	if (rdma_nl_put_driver_u32(msg, "msn", wq->rq.msn))

		goto err;

	if (rdma_nl_put_driver_u32_hex(msg, "rqt_hwaddr", wq->rq.rqt_hwaddr))

		goto err;

	if (rdma_nl_put_driver_u32(msg, "rqt_size", wq->rq.rqt_size))

		goto err;

	if (rdma_nl_put_driver_u32(msg, "in_use", wq->rq.in_use))

		goto err;

	if (rdma_nl_put_driver_u32(msg, "size", wq->rq.size))

		goto err;

	return 0;

err:

	return -EMSGSIZE;

}



static int fill_swsqe(struct sk_buff *msg, struct t4_sq *sq, u16 idx,

		      struct t4_swsqe *sqe)

{

	if (rdma_nl_put_driver_u32(msg, "idx", idx))

		goto err;

	if (rdma_nl_put_driver_u32(msg, "opcode", sqe->opcode))

		goto err;

	if (rdma_nl_put_driver_u64_hex(msg, "wr_id", sqe->wr_id))

		goto err;

	if (rdma_nl_put_driver_u32(msg, "complete", sqe->complete))

		goto err;

	if (sqe->complete &&

	    rdma_nl_put_driver_u32(msg, "cqe_status", CQE_STATUS(&sqe->cqe)))

		goto err;

	if (rdma_nl_put_driver_u32(msg, "signaled", sqe->signaled))

		goto err;

	if (rdma_nl_put_driver_u32(msg, "flushed", sqe->flushed))

		goto err;

	return 0;

err:

	return -EMSGSIZE;

}



/*

 * Dump the first and last pending sqes.

 */

static int fill_swsqes(struct sk_buff *msg, struct t4_sq *sq,

		       u16 first_idx, struct t4_swsqe *first_sqe,

		       u16 last_idx, struct t4_swsqe *last_sqe)

{

	if (!first_sqe)

		goto out;

	if (fill_swsqe(msg, sq, first_idx, first_sqe))

		goto err;

	if (!last_sqe)

		goto out;

	if (fill_swsqe(msg, sq, last_idx, last_sqe))

		goto err;

out:

	return 0;

err:

	return -EMSGSIZE;

}



static int fill_swrqe(struct sk_buff *msg, struct t4_rq *rq, u16 idx,

		      struct t4_swrqe *rqe)

{

	if (rdma_nl_put_driver_u32(msg, "idx", idx))

		goto err;

	if (rdma_nl_put_driver_u64_hex(msg, "wr_id", rqe->wr_id))

		goto err;

	return 0;

err:

	return -EMSGSIZE;

}



/*

 * Dump the first and last pending rqes.

 */

static int fill_swrqes(struct sk_buff *msg, struct t4_rq *rq,

		       u16 first_idx, struct t4_swrqe *first_rqe,

		       u16 last_idx, struct t4_swrqe *last_rqe)

{

	if (!first_rqe)

		goto out;

	if (fill_swrqe(msg, rq, first_idx, first_rqe))

		goto err;

	if (!last_rqe)

		goto out;

	if (fill_swrqe(msg, rq, last_idx, last_rqe))

		goto err;

out:

	return 0;

err:

	return -EMSGSIZE;

}



static int fill_res_qp_entry(struct sk_buff *msg,

			     struct rdma_restrack_entry *res)

{

	struct ib_qp *ibqp = container_of(res, struct ib_qp, res);

	struct t4_swsqe *fsp = NULL, *lsp = NULL;

	struct t4_swrqe *frp = NULL, *lrp = NULL;

	struct c4iw_qp *qhp = to_c4iw_qp(ibqp);

	struct t4_swsqe first_sqe, last_sqe;

	struct t4_swrqe first_rqe, last_rqe;

	u16 first_sq_idx, last_sq_idx;

	u16 first_rq_idx, last_rq_idx;

	struct nlattr *table_attr;

	struct t4_wq wq;



	/* User qp state is not available, so don't dump user qps */

	if (qhp->ucontext)

		return 0;



	table_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_DRIVER);

	if (!table_attr)

		goto err;



	/* Get a consistent snapshot */

	spin_lock_irq(&qhp->lock);

	wq = qhp->wq;



	/* If there are any pending sqes, copy the first and last */

	if (wq.sq.cidx != wq.sq.pidx) {

		first_sq_idx = wq.sq.cidx;

		first_sqe = qhp->wq.sq.sw_sq[first_sq_idx];

		fsp = &first_sqe;

		last_sq_idx = wq.sq.pidx;

		if (last_sq_idx-- == 0)

			last_sq_idx = wq.sq.size - 1;

		if (last_sq_idx != first_sq_idx) {

			last_sqe = qhp->wq.sq.sw_sq[last_sq_idx];

			lsp = &last_sqe;

		}

	}



	/* If there are any pending rqes, copy the first and last */

	if (wq.rq.cidx != wq.rq.pidx) {

		first_rq_idx = wq.rq.cidx;

		first_rqe = qhp->wq.rq.sw_rq[first_rq_idx];

		frp = &first_rqe;

		last_rq_idx = wq.rq.pidx;

		if (last_rq_idx-- == 0)

			last_rq_idx = wq.rq.size - 1;

		if (last_rq_idx != first_rq_idx) {

			last_rqe = qhp->wq.rq.sw_rq[last_rq_idx];

			lrp = &last_rqe;

		}

	}

	spin_unlock_irq(&qhp->lock);



	if (fill_sq(msg, &wq))

		goto err_cancel_table;



	if (fill_swsqes(msg, &wq.sq, first_sq_idx, fsp, last_sq_idx, lsp))

		goto err_cancel_table;



	if (fill_rq(msg, &wq))

		goto err_cancel_table;



	if (fill_swrqes(msg, &wq.rq, first_rq_idx, frp, last_rq_idx, lrp))

		goto err_cancel_table;



	nla_nest_end(msg, table_attr);

	return 0;



err_cancel_table:

	nla_nest_cancel(msg, table_attr);

err:

	return -EMSGSIZE;

}



c4iw_restrack_func *c4iw_restrack_funcs[RDMA_RESTRACK_MAX] = {

	[RDMA_RESTRACK_QP]	= fill_res_qp_entry,

};