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

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
......@@ -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
......@@ -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
......@@ -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));
......
/*
* 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,
};
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