linux_dsm_epyc7002/drivers/infiniband/hw/cxgb4/restrack.c
Steve Wise 116aeb8873 iw_cxgb4: provide detailed provider-specific CM_ID information
Add a table of important fields from the c4iw_ep* structures to the cm_id
resource tracking table.  This is helpful in debugging.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2018-05-24 09:39:25 -06:00

278 lines
7.6 KiB
C

/*
* 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 <rdma/rdma_cm.h>
#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_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_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 c4iw_qp *qhp = to_c4iw_qp(ibqp);
u16 first_sq_idx = 0, last_sq_idx = 0;
struct t4_swsqe first_sqe, last_sqe;
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;
}
}
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;
nla_nest_end(msg, table_attr);
return 0;
err_cancel_table:
nla_nest_cancel(msg, table_attr);
err:
return -EMSGSIZE;
}
union union_ep {
struct c4iw_listen_ep lep;
struct c4iw_ep ep;
};
static int fill_res_ep_entry(struct sk_buff *msg,
struct rdma_restrack_entry *res)
{
struct rdma_cm_id *cm_id = rdma_res_to_id(res);
struct nlattr *table_attr;
struct c4iw_ep_common *epcp;
struct c4iw_listen_ep *listen_ep = NULL;
struct c4iw_ep *ep = NULL;
struct iw_cm_id *iw_cm_id;
union union_ep *uep;
iw_cm_id = rdma_iw_cm_id(cm_id);
if (!iw_cm_id)
return 0;
epcp = (struct c4iw_ep_common *)iw_cm_id->provider_data;
if (!epcp)
return 0;
uep = kcalloc(1, sizeof(*uep), GFP_KERNEL);
if (!uep)
return 0;
table_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_DRIVER);
if (!table_attr)
goto err_free_uep;
/* Get a consistent snapshot */
mutex_lock(&epcp->mutex);
if (epcp->state == LISTEN) {
uep->lep = *(struct c4iw_listen_ep *)epcp;
mutex_unlock(&epcp->mutex);
listen_ep = &uep->lep;
epcp = &listen_ep->com;
} else {
uep->ep = *(struct c4iw_ep *)epcp;
mutex_unlock(&epcp->mutex);
ep = &uep->ep;
epcp = &ep->com;
}
if (rdma_nl_put_driver_u32(msg, "state", epcp->state))
goto err_cancel_table;
if (rdma_nl_put_driver_u64_hex(msg, "flags", epcp->flags))
goto err_cancel_table;
if (rdma_nl_put_driver_u64_hex(msg, "history", epcp->history))
goto err_cancel_table;
if (epcp->state == LISTEN) {
if (rdma_nl_put_driver_u32(msg, "stid", listen_ep->stid))
goto err_cancel_table;
if (rdma_nl_put_driver_u32(msg, "backlog", listen_ep->backlog))
goto err_cancel_table;
} else {
if (rdma_nl_put_driver_u32(msg, "hwtid", ep->hwtid))
goto err_cancel_table;
if (rdma_nl_put_driver_u32(msg, "ord", ep->ord))
goto err_cancel_table;
if (rdma_nl_put_driver_u32(msg, "ird", ep->ird))
goto err_cancel_table;
if (rdma_nl_put_driver_u32(msg, "emss", ep->emss))
goto err_cancel_table;
if (!ep->parent_ep && rdma_nl_put_driver_u32(msg, "atid",
ep->atid))
goto err_cancel_table;
}
nla_nest_end(msg, table_attr);
kfree(uep);
return 0;
err_cancel_table:
nla_nest_cancel(msg, table_attr);
err_free_uep:
kfree(uep);
return -EMSGSIZE;
}
c4iw_restrack_func *c4iw_restrack_funcs[RDMA_RESTRACK_MAX] = {
[RDMA_RESTRACK_QP] = fill_res_qp_entry,
[RDMA_RESTRACK_CM_ID] = fill_res_ep_entry,
};