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@xxxxxxxxxxxxxxxxxxxxx>
---
drivers/infiniband/hw/cxgb4/Makefile | 3 +-
drivers/infiniband/hw/cxgb4/iw_cxgb4.h | 6 +
drivers/infiniband/hw/cxgb4/provider.c | 9 +
drivers/infiniband/hw/cxgb4/restrack.c | 363 +++++++++++++++++++++++++++++++++
4 files changed, 380 insertions(+), 1 deletion(-)
create mode 100644 drivers/infiniband/hw/cxgb4/restrack.c
diff --git a/drivers/infiniband/hw/cxgb4/Makefile b/drivers/infiniband/hw/cxgb4/Makefile
index fa40b68..9edd920 100644
--- a/drivers/infiniband/hw/cxgb4/Makefile
+++ b/drivers/infiniband/hw/cxgb4/Makefile
@@ -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
diff --git a/drivers/infiniband/hw/cxgb4/iw_cxgb4.h b/drivers/infiniband/hw/cxgb4/iw_cxgb4.h
index cc92900..bbdc8dd 100644
--- a/drivers/infiniband/hw/cxgb4/iw_cxgb4.h
+++ b/drivers/infiniband/hw/cxgb4/iw_cxgb4.h
@@ -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 +1079,9 @@ void __iomem *c4iw_bar2_addrs(struct c4iw_rdev *rdev, unsigned int qid,
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 netlink_callback *cb,
+ struct rdma_restrack_entry *res);
+extern c4iw_restrack_func *c4iw_restrack_funcs[RDMA_RESTRACK_MAX];
+
#endif
diff --git a/drivers/infiniband/hw/cxgb4/provider.c b/drivers/infiniband/hw/cxgb4/provider.c
index 0b9cc73..1dda32b 100644
--- a/drivers/infiniband/hw/cxgb4/provider.c
+++ b/drivers/infiniband/hw/cxgb4/provider.c
@@ -551,6 +551,14 @@ static struct net_device *get_netdev(struct ib_device *dev, u8 port)
return ndev;
}
+static int fill_res_entry(struct sk_buff *msg, struct netlink_callback *cb,
+ struct rdma_restrack_entry *res)
+{
+ return (res->type < ARRAY_SIZE(c4iw_restrack_funcs) &&
+ c4iw_restrack_funcs[res->type]) ?
+ c4iw_restrack_funcs[res->type](msg, cb, res) : 0;
+}
+
void c4iw_register_device(struct work_struct *work)
{
int ret;
@@ -645,6 +653,7 @@ 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));
diff --git a/drivers/infiniband/hw/cxgb4/restrack.c b/drivers/infiniband/hw/cxgb4/restrack.c
new file mode 100644
index 0000000..a67f509
--- /dev/null
+++ b/drivers/infiniband/hw/cxgb4/restrack.c
@@ -0,0 +1,363 @@
+/*
+ * 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"
+
+static int fill_sq(struct sk_buff *msg, struct t4_wq *wq)
+{
+ struct nlattr *entry_attr;
+
+ /* WQ+SQ */
+ entry_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_PROVIDER_ENTRY);
+ if (!entry_attr)
+ goto err;
+
+ if (nla_put_string(msg, RDMA_NLDEV_ATTR_PROVIDER_STRING, "sqid"))
+ goto err_cancel_entry;
+ if (nla_put_u32(msg, RDMA_NLDEV_ATTR_PROVIDER_U32, wq->sq.qid))
+ goto err_cancel_entry;
+ if (nla_put_string(msg, RDMA_NLDEV_ATTR_PROVIDER_STRING, "flushed"))
+ goto err_cancel_entry;
+ if (nla_put_u32(msg, RDMA_NLDEV_ATTR_PROVIDER_U32, wq->flushed))
+ goto err_cancel_entry;
+ if (nla_put_string(msg, RDMA_NLDEV_ATTR_PROVIDER_STRING, "memsize"))
+ goto err_cancel_entry;
+ if (nla_put_u32(msg, RDMA_NLDEV_ATTR_PROVIDER_U32, wq->sq.memsize))
+ goto err_cancel_entry;
+ if (nla_put_string(msg, RDMA_NLDEV_ATTR_PROVIDER_STRING, "cidx"))
+ goto err_cancel_entry;
+ if (nla_put_u32(msg, RDMA_NLDEV_ATTR_PROVIDER_U32, wq->sq.cidx))
+ goto err_cancel_entry;
+ if (nla_put_string(msg, RDMA_NLDEV_ATTR_PROVIDER_STRING, "pidx"))
+ goto err_cancel_entry;
+ if (nla_put_u32(msg, RDMA_NLDEV_ATTR_PROVIDER_U32, wq->sq.pidx))
+ goto err_cancel_entry;
+ if (nla_put_string(msg, RDMA_NLDEV_ATTR_PROVIDER_STRING, "wq_pidx"))
+ goto err_cancel_entry;
+ if (nla_put_u32(msg, RDMA_NLDEV_ATTR_PROVIDER_U32, wq->sq.wq_pidx))
+ goto err_cancel_entry;
+ if (nla_put_string(msg, RDMA_NLDEV_ATTR_PROVIDER_STRING,
+ "flush_cidx"))
+ goto err_cancel_entry;
+ if (nla_put_u32(msg, RDMA_NLDEV_ATTR_PROVIDER_U32,
+ wq->sq.flush_cidx))
+ goto err_cancel_entry;
+ if (nla_put_string(msg, RDMA_NLDEV_ATTR_PROVIDER_STRING, "in_use"))
+ goto err_cancel_entry;
+ if (nla_put_u32(msg, RDMA_NLDEV_ATTR_PROVIDER_U32, wq->sq.in_use))
+ goto err_cancel_entry;
+ if (nla_put_string(msg, RDMA_NLDEV_ATTR_PROVIDER_STRING, "size"))
+ goto err_cancel_entry;
+ if (nla_put_u32(msg, RDMA_NLDEV_ATTR_PROVIDER_U32, wq->sq.size))
+ goto err_cancel_entry;
+ if (nla_put_string(msg, RDMA_NLDEV_ATTR_PROVIDER_STRING, "flags"))
+ goto err_cancel_entry;
+ if (nla_put_u32(msg, RDMA_NLDEV_ATTR_PROVIDER_X32, wq->sq.flags))
+ goto err_cancel_entry;
+
+ nla_nest_end(msg, entry_attr);
+ return 0;
+
+err_cancel_entry:
+ nla_nest_cancel(msg, entry_attr);
+err:
+ return -EMSGSIZE;
+}
+
+static int fill_rq(struct sk_buff *msg, struct t4_wq *wq)
+{
+ struct nlattr *entry_attr;
+
+ /* RQ */
+ entry_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_PROVIDER_ENTRY);
+ if (!entry_attr)
+ goto err;
+
+ if (nla_put_string(msg, RDMA_NLDEV_ATTR_PROVIDER_STRING, "rqid"))
+ goto err_cancel_entry;
+ if (nla_put_u32(msg, RDMA_NLDEV_ATTR_PROVIDER_U32, wq->rq.qid))
+ goto err_cancel_entry;
+ if (nla_put_string(msg, RDMA_NLDEV_ATTR_PROVIDER_STRING, "memsize"))
+ goto err_cancel_entry;
+ if (nla_put_u32(msg, RDMA_NLDEV_ATTR_PROVIDER_U32, wq->rq.memsize))
+ goto err_cancel_entry;
+ if (nla_put_string(msg, RDMA_NLDEV_ATTR_PROVIDER_STRING, "cidx"))
+ goto err_cancel_entry;
+ if (nla_put_u32(msg, RDMA_NLDEV_ATTR_PROVIDER_U32, wq->rq.cidx))
+ goto err_cancel_entry;
+ if (nla_put_string(msg, RDMA_NLDEV_ATTR_PROVIDER_STRING, "pidx"))
+ goto err_cancel_entry;
+ if (nla_put_u32(msg, RDMA_NLDEV_ATTR_PROVIDER_U32, wq->rq.pidx))
+ goto err_cancel_entry;
+ if (nla_put_string(msg, RDMA_NLDEV_ATTR_PROVIDER_STRING, "wq_pidx"))
+ goto err_cancel_entry;
+ if (nla_put_u32(msg, RDMA_NLDEV_ATTR_PROVIDER_U32, wq->rq.wq_pidx))
+ goto err_cancel_entry;
+ if (nla_put_string(msg, RDMA_NLDEV_ATTR_PROVIDER_STRING, "msn"))
+ goto err_cancel_entry;
+ if (nla_put_u32(msg, RDMA_NLDEV_ATTR_PROVIDER_U32, wq->rq.msn))
+ goto err_cancel_entry;
+ if (nla_put_string(msg, RDMA_NLDEV_ATTR_PROVIDER_STRING,
+ "rqt_hwaddr"))
+ goto err_cancel_entry;
+ if (nla_put_u32(msg, RDMA_NLDEV_ATTR_PROVIDER_X32,
+ wq->rq.rqt_hwaddr))
+ goto err_cancel_entry;
+ if (nla_put_string(msg, RDMA_NLDEV_ATTR_PROVIDER_STRING, "rqt_size"))
+ goto err_cancel_entry;
+ if (nla_put_u32(msg, RDMA_NLDEV_ATTR_PROVIDER_U32, wq->rq.rqt_size))
+ goto err_cancel_entry;
+ if (nla_put_string(msg, RDMA_NLDEV_ATTR_PROVIDER_STRING, "in_use"))
+ goto err_cancel_entry;
+ if (nla_put_u32(msg, RDMA_NLDEV_ATTR_PROVIDER_U32, wq->rq.in_use))
+ goto err_cancel_entry;
+ if (nla_put_string(msg, RDMA_NLDEV_ATTR_PROVIDER_STRING, "size"))
+ goto err_cancel_entry;
+ if (nla_put_u32(msg, RDMA_NLDEV_ATTR_PROVIDER_U32, wq->rq.size))
+ goto err_cancel_entry;
+
+ nla_nest_end(msg, entry_attr);
+ return 0;
+
+err_cancel_entry:
+ nla_nest_cancel(msg, entry_attr);
+err:
+ return -EMSGSIZE;
+}
+
+static int fill_swsqe(struct sk_buff *msg, struct t4_sq *sq, u16 idx,
+ struct t4_swsqe *sqe)
+{
+ struct nlattr *entry_attr;
+
+ entry_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_PROVIDER_ENTRY);
+ if (!entry_attr)
+ goto err;
+
+ if (nla_put_string(msg, RDMA_NLDEV_ATTR_PROVIDER_STRING, " idx"))
+ goto err_cancel_entry;
+ if (nla_put_u32(msg, RDMA_NLDEV_ATTR_PROVIDER_U32, idx))
+ goto err_cancel_entry;
+ if (nla_put_string(msg, RDMA_NLDEV_ATTR_PROVIDER_STRING, "opcode"))
+ goto err_cancel_entry;
+ if (nla_put_u32(msg, RDMA_NLDEV_ATTR_PROVIDER_U32, sqe->opcode))
+ goto err_cancel_entry;
+
+ if (nla_put_string(msg, RDMA_NLDEV_ATTR_PROVIDER_STRING, "wr_id"))
+ goto err_cancel_entry;
+ if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_PROVIDER_X64, sqe->wr_id,
+ RDMA_NLDEV_ATTR_PAD))
+ goto err_cancel_entry;
+
+ if (nla_put_string(msg, RDMA_NLDEV_ATTR_PROVIDER_STRING, "complete"))
+ goto err_cancel_entry;
+ if (nla_put_u32(msg, RDMA_NLDEV_ATTR_PROVIDER_U32, sqe->complete))
+ goto err_cancel_entry;
+ if (sqe->complete) {
+ if (nla_put_string(msg, RDMA_NLDEV_ATTR_PROVIDER_STRING,
+ "cqe_status"))
+ goto err_cancel_entry;
+ if (nla_put_u32(msg, RDMA_NLDEV_ATTR_PROVIDER_U32,
+ CQE_STATUS(&sqe->cqe)))
+ goto err_cancel_entry;
+ }
+
+ if (nla_put_string(msg, RDMA_NLDEV_ATTR_PROVIDER_STRING, "signaled"))
+ goto err_cancel_entry;
+ if (nla_put_u32(msg, RDMA_NLDEV_ATTR_PROVIDER_U32, sqe->signaled))
+ goto err_cancel_entry;
+
+ if (nla_put_string(msg, RDMA_NLDEV_ATTR_PROVIDER_STRING, "flushed"))
+ goto err_cancel_entry;
+ if (nla_put_u32(msg, RDMA_NLDEV_ATTR_PROVIDER_U32, sqe->flushed))
+ goto err_cancel_entry;
+
+ nla_nest_end(msg, entry_attr);
+ return 0;
+
+err_cancel_entry:
+ nla_nest_cancel(msg, entry_attr);
+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)
+{
+ struct nlattr *entry_attr;
+
+ entry_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_PROVIDER_ENTRY);
+ if (!entry_attr)
+ goto err;
+
+ if (nla_put_string(msg, RDMA_NLDEV_ATTR_PROVIDER_STRING, " idx"))
+ goto err_cancel_entry;
+ if (nla_put_u32(msg, RDMA_NLDEV_ATTR_PROVIDER_U32, idx))
+ goto err_cancel_entry;
+
+ if (nla_put_string(msg, RDMA_NLDEV_ATTR_PROVIDER_STRING, "wr_id"))
+ goto err_cancel_entry;
+ if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_PROVIDER_X64, rqe->wr_id,
+ RDMA_NLDEV_ATTR_PAD))
+ goto err_cancel_entry;
+
+ nla_nest_end(msg, entry_attr);
+ return 0;
+
+err_cancel_entry:
+ nla_nest_cancel(msg, entry_attr);
+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 netlink_callback *cb,
+ 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_PROVIDER);
+ 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,
+};
--
1.8.3.1
--
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