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: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Doug Ledford <dledford@redhat.com>hifive-unleashed-5.1
Steve Wise
Doug Ledford
parent
73937e8a03
commit
056f9c7f39
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@ -3,4 +3,5 @@ ccflags-y += -Idrivers/net/ethernet/chelsio/libcxgb
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obj-$(CONFIG_INFINIBAND_CXGB4) += iw_cxgb4.o
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iw_cxgb4-y := device.o cm.o provider.o mem.o cq.o qp.o resource.o ev.o id_table.o
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iw_cxgb4-y := device.o cm.o provider.o mem.o cq.o qp.o resource.o ev.o id_table.o \
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restrack.o
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@ -55,6 +55,7 @@
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#include <rdma/iw_cm.h>
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#include <rdma/rdma_netlink.h>
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#include <rdma/iw_portmap.h>
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#include <rdma/restrack.h>
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#include "cxgb4.h"
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#include "cxgb4_uld.h"
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@ -1078,4 +1079,8 @@ extern int use_dsgl;
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void c4iw_invalidate_mr(struct c4iw_dev *rhp, u32 rkey);
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struct c4iw_wr_wait *c4iw_alloc_wr_wait(gfp_t gfp);
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typedef int c4iw_restrack_func(struct sk_buff *msg,
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struct rdma_restrack_entry *res);
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extern c4iw_restrack_func *c4iw_restrack_funcs[RDMA_RESTRACK_MAX];
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#endif
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@ -551,6 +551,13 @@ static struct net_device *get_netdev(struct ib_device *dev, u8 port)
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return ndev;
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}
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static int fill_res_entry(struct sk_buff *msg, struct rdma_restrack_entry *res)
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{
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return (res->type < ARRAY_SIZE(c4iw_restrack_funcs) &&
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c4iw_restrack_funcs[res->type]) ?
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c4iw_restrack_funcs[res->type](msg, res) : 0;
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}
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void c4iw_register_device(struct work_struct *work)
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{
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int ret;
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@ -645,6 +652,7 @@ void c4iw_register_device(struct work_struct *work)
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dev->ibdev.iwcm->add_ref = c4iw_qp_add_ref;
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dev->ibdev.iwcm->rem_ref = c4iw_qp_rem_ref;
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dev->ibdev.iwcm->get_qp = c4iw_get_qp;
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dev->ibdev.res.fill_res_entry = fill_res_entry;
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memcpy(dev->ibdev.iwcm->ifname, dev->rdev.lldi.ports[0]->name,
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sizeof(dev->ibdev.iwcm->ifname));
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@ -0,0 +1,248 @@
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/*
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* Copyright (c) 2018 Chelsio, Inc. All rights reserved.
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenIB.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include "iw_cxgb4.h"
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#include <rdma/restrack.h>
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#include <uapi/rdma/rdma_netlink.h>
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static int fill_sq(struct sk_buff *msg, struct t4_wq *wq)
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{
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/* WQ+SQ */
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if (rdma_nl_put_driver_u32(msg, "sqid", wq->sq.qid))
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goto err;
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if (rdma_nl_put_driver_u32(msg, "flushed", wq->flushed))
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goto err;
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if (rdma_nl_put_driver_u32(msg, "memsize", wq->sq.memsize))
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goto err;
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if (rdma_nl_put_driver_u32(msg, "cidx", wq->sq.cidx))
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goto err;
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if (rdma_nl_put_driver_u32(msg, "pidx", wq->sq.pidx))
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goto err;
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if (rdma_nl_put_driver_u32(msg, "wq_pidx", wq->sq.wq_pidx))
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goto err;
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if (rdma_nl_put_driver_u32(msg, "flush_cidx", wq->sq.flush_cidx))
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goto err;
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if (rdma_nl_put_driver_u32(msg, "in_use", wq->sq.in_use))
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goto err;
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if (rdma_nl_put_driver_u32(msg, "size", wq->sq.size))
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goto err;
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if (rdma_nl_put_driver_u32_hex(msg, "flags", wq->sq.flags))
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goto err;
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return 0;
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err:
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return -EMSGSIZE;
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}
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static int fill_rq(struct sk_buff *msg, struct t4_wq *wq)
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{
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/* RQ */
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if (rdma_nl_put_driver_u32(msg, "rqid", wq->rq.qid))
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goto err;
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if (rdma_nl_put_driver_u32(msg, "memsize", wq->rq.memsize))
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goto err;
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if (rdma_nl_put_driver_u32(msg, "cidx", wq->rq.cidx))
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goto err;
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if (rdma_nl_put_driver_u32(msg, "pidx", wq->rq.pidx))
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goto err;
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if (rdma_nl_put_driver_u32(msg, "wq_pidx", wq->rq.wq_pidx))
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goto err;
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if (rdma_nl_put_driver_u32(msg, "msn", wq->rq.msn))
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goto err;
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if (rdma_nl_put_driver_u32_hex(msg, "rqt_hwaddr", wq->rq.rqt_hwaddr))
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goto err;
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if (rdma_nl_put_driver_u32(msg, "rqt_size", wq->rq.rqt_size))
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goto err;
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if (rdma_nl_put_driver_u32(msg, "in_use", wq->rq.in_use))
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goto err;
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if (rdma_nl_put_driver_u32(msg, "size", wq->rq.size))
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goto err;
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return 0;
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err:
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return -EMSGSIZE;
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}
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static int fill_swsqe(struct sk_buff *msg, struct t4_sq *sq, u16 idx,
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struct t4_swsqe *sqe)
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{
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if (rdma_nl_put_driver_u32(msg, "idx", idx))
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goto err;
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if (rdma_nl_put_driver_u32(msg, "opcode", sqe->opcode))
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goto err;
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if (rdma_nl_put_driver_u64_hex(msg, "wr_id", sqe->wr_id))
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goto err;
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if (rdma_nl_put_driver_u32(msg, "complete", sqe->complete))
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goto err;
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if (sqe->complete &&
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rdma_nl_put_driver_u32(msg, "cqe_status", CQE_STATUS(&sqe->cqe)))
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goto err;
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if (rdma_nl_put_driver_u32(msg, "signaled", sqe->signaled))
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goto err;
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if (rdma_nl_put_driver_u32(msg, "flushed", sqe->flushed))
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goto err;
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return 0;
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err:
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return -EMSGSIZE;
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}
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/*
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* Dump the first and last pending sqes.
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*/
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static int fill_swsqes(struct sk_buff *msg, struct t4_sq *sq,
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u16 first_idx, struct t4_swsqe *first_sqe,
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u16 last_idx, struct t4_swsqe *last_sqe)
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{
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if (!first_sqe)
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goto out;
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if (fill_swsqe(msg, sq, first_idx, first_sqe))
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goto err;
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if (!last_sqe)
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goto out;
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if (fill_swsqe(msg, sq, last_idx, last_sqe))
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goto err;
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out:
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return 0;
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err:
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return -EMSGSIZE;
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}
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static int fill_swrqe(struct sk_buff *msg, struct t4_rq *rq, u16 idx,
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struct t4_swrqe *rqe)
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{
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if (rdma_nl_put_driver_u32(msg, "idx", idx))
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goto err;
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if (rdma_nl_put_driver_u64_hex(msg, "wr_id", rqe->wr_id))
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goto err;
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return 0;
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err:
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return -EMSGSIZE;
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}
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/*
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* Dump the first and last pending rqes.
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*/
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static int fill_swrqes(struct sk_buff *msg, struct t4_rq *rq,
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u16 first_idx, struct t4_swrqe *first_rqe,
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u16 last_idx, struct t4_swrqe *last_rqe)
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{
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if (!first_rqe)
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goto out;
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if (fill_swrqe(msg, rq, first_idx, first_rqe))
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goto err;
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if (!last_rqe)
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goto out;
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if (fill_swrqe(msg, rq, last_idx, last_rqe))
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goto err;
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out:
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return 0;
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err:
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return -EMSGSIZE;
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}
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static int fill_res_qp_entry(struct sk_buff *msg,
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struct rdma_restrack_entry *res)
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{
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struct ib_qp *ibqp = container_of(res, struct ib_qp, res);
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struct t4_swsqe *fsp = NULL, *lsp = NULL;
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struct t4_swrqe *frp = NULL, *lrp = NULL;
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struct c4iw_qp *qhp = to_c4iw_qp(ibqp);
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struct t4_swsqe first_sqe, last_sqe;
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struct t4_swrqe first_rqe, last_rqe;
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u16 first_sq_idx, last_sq_idx;
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u16 first_rq_idx, last_rq_idx;
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struct nlattr *table_attr;
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struct t4_wq wq;
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/* User qp state is not available, so don't dump user qps */
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if (qhp->ucontext)
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return 0;
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table_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_DRIVER);
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if (!table_attr)
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goto err;
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/* Get a consistent snapshot */
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spin_lock_irq(&qhp->lock);
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wq = qhp->wq;
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/* If there are any pending sqes, copy the first and last */
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if (wq.sq.cidx != wq.sq.pidx) {
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first_sq_idx = wq.sq.cidx;
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first_sqe = qhp->wq.sq.sw_sq[first_sq_idx];
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fsp = &first_sqe;
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last_sq_idx = wq.sq.pidx;
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if (last_sq_idx-- == 0)
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last_sq_idx = wq.sq.size - 1;
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if (last_sq_idx != first_sq_idx) {
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last_sqe = qhp->wq.sq.sw_sq[last_sq_idx];
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lsp = &last_sqe;
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}
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}
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/* If there are any pending rqes, copy the first and last */
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if (wq.rq.cidx != wq.rq.pidx) {
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first_rq_idx = wq.rq.cidx;
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first_rqe = qhp->wq.rq.sw_rq[first_rq_idx];
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frp = &first_rqe;
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last_rq_idx = wq.rq.pidx;
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if (last_rq_idx-- == 0)
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last_rq_idx = wq.rq.size - 1;
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if (last_rq_idx != first_rq_idx) {
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last_rqe = qhp->wq.rq.sw_rq[last_rq_idx];
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lrp = &last_rqe;
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}
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}
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spin_unlock_irq(&qhp->lock);
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if (fill_sq(msg, &wq))
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goto err_cancel_table;
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if (fill_swsqes(msg, &wq.sq, first_sq_idx, fsp, last_sq_idx, lsp))
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goto err_cancel_table;
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if (fill_rq(msg, &wq))
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goto err_cancel_table;
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if (fill_swrqes(msg, &wq.rq, first_rq_idx, frp, last_rq_idx, lrp))
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goto err_cancel_table;
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nla_nest_end(msg, table_attr);
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return 0;
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err_cancel_table:
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nla_nest_cancel(msg, table_attr);
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err:
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return -EMSGSIZE;
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}
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c4iw_restrack_func *c4iw_restrack_funcs[RDMA_RESTRACK_MAX] = {
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[RDMA_RESTRACK_QP] = fill_res_qp_entry,
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};
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