[PATCH v3 12/13] SoftiWarp debugging code

Bernard Metzler
2018-01-14T22:36:02Z

Signed-off-by: Bernard Metzler <bmt-OA+xvbQnYDHMbYB6QlFGEg@public.gmane.org>
---
drivers/infiniband/sw/siw/siw_debug.c | 463 ++++++++++++++++++++++++++++++++++
drivers/infiniband/sw/siw/siw_debug.h | 87 +++++++
2 files changed, 550 insertions(+)
create mode 100644 drivers/infiniband/sw/siw/siw_debug.c
create mode 100644 drivers/infiniband/sw/siw/siw_debug.h

diff --git a/drivers/infiniband/sw/siw/siw_debug.c b/drivers/infiniband/sw/siw/siw_debug.c
new file mode 100644
index 000000000000..7cad480ea7a6
--- /dev/null
+++ b/drivers/infiniband/sw/siw/siw_debug.c
@@ -0,0 +1,463 @@
+/*
+ * Software iWARP device driver
+ *
+ * Authors: Bernard Metzler <bmt-OA+xvbQnYDHMbYB6QlFGEg@public.gmane.org>
+ * Fredy Neeser <nfd-OA+xvbQnYDHMbYB6QlFGEg@public.gmane.org>
+ *
+ * Copyright (c) 2008-2017, IBM Corporation
+ *
+ * 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
+ * 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.
+ *
+ * - Neither the name of IBM nor the names of its contributors may be
+ * used to endorse or promote products derived from this software without
+ * specific prior written permission.
+ *
+ * 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 <linux/errno.h>
+#include <linux/types.h>
+#include <net/tcp.h>
+#include <linux/list.h>
+#include <linux/debugfs.h>
+
+#include <rdma/iw_cm.h>
+#include <rdma/ib_verbs.h>
+#include <rdma/ib_smi.h>
+#include <rdma/ib_user_verbs.h>
+
+#include "siw.h"
+#include "siw_cm.h"
+#include "siw_obj.h"
+
+#define FDENTRY(f) (f->f_path.dentry)
+
+static struct dentry *siw_debugfs;
+
+static ssize_t siw_show_qps(struct file *f, char __user *buf, size_t space,
+ loff_t *ppos)
+{
+ struct siw_device *sdev = FDENTRY(f)->d_inode->i_private;
+ struct list_head *pos, *tmp;
+ char *kbuf = NULL;
+ int len = 0, n, num_qp;
+
+ if (*ppos)
+ goto out;
+
+ kbuf = kmalloc(space, GFP_KERNEL);
+ if (!kbuf)
+ goto out;
+
+ num_qp = atomic_read(&sdev->num_qp);
+ if (!num_qp)
+ goto out;
+
+ len = snprintf(kbuf, space, "%s: %d QPs\n", sdev->base_dev.name,
+ num_qp);
+ if (len > space) {
+ len = space;
+ goto out;
+ }
+ space -= len;
+ n = snprintf(kbuf + len, space,
+ "%-15s%-6s%-6s%-5s%-5s%-5s%-5s%-5s%-20s%s\n",
+ "QP-ID", "State", "Ref's", "SQ", "RQ", "IRQ", "ORQ",
+ "s/r", "Sock", "CEP");
+
+ if (n > space) {
+ len += space;
+ goto out;
+ }
+ len += n;
+ space -= n;
+
+ list_for_each_safe(pos, tmp, &sdev->qp_list) {
+ struct siw_qp *qp = list_entry(pos, struct siw_qp, devq);
+
+ n = snprintf(kbuf + len, space,
+ "%-15d%-6d%-6d%-5d%-5d%-5d%-5d%d/%-3d0x%-18p0x%-18p\n",
+ QP_ID(qp),
+ qp->attrs.state,
+ refcount_read(&qp->hdr.ref),
+ qp->attrs.sq_size,
+ qp->attrs.rq_size,
+ qp->attrs.irq_size,
+ qp->attrs.orq_size,
+ tx_wqe(qp) ? 1 : 0,
+ rx_wqe(qp) ? 1 : 0,
+ qp->attrs.llp_stream_handle,
+ qp->cep);
+ if (n < space) {
+ len += n;
+ space -= n;
+ } else {
+ len += space;
+ break;
+ }
+ }
+out:
+ if (len)
+ len = simple_read_from_buffer(buf, len, ppos, kbuf, len);
+
+ kfree(kbuf);
+
+ return len;
+};
+
+static ssize_t siw_show_mrs(struct file *f, char __user *buf, size_t space,
+ loff_t *ppos)
+{
+ struct siw_device *sdev = FDENTRY(f)->d_inode->i_private;
+ struct list_head *pos, *tmp;
+ char *kbuf = NULL;
+ int len = 0, n, num_mr;
+
+ if (*ppos)
+ goto out;
+
+ kbuf = kmalloc(space, GFP_KERNEL);
+ if (!kbuf)
+ goto out;
+
+ num_mr = atomic_read(&sdev->num_mr);
+ if (!num_mr)
+ goto out;
+
+ len = snprintf(kbuf, space, "%s: %d MRs\n", sdev->base_dev.name,
+ num_mr);
+ if (len > space) {
+ len = space;
+ goto out;
+ }
+ space -= len;
+
+ n = snprintf(kbuf + len, space,
+ "%-15s%-18s%-8s%-8s%-22s%-8s%-9s\n",
+ "MEM-ID", "PD", "STag", "Type", "size", "Ref's", "State");
+
+ if (n > space) {
+ len += space;
+ goto out;
+ }
+ len += n;
+ space -= n;
+
+ list_for_each_safe(pos, tmp, &sdev->mr_list) {
+ struct siw_mr *mr = list_entry(pos, struct siw_mr, devq);
+
+ n = snprintf(kbuf + len, space,
+ "%-15d%-18p0x%-8x%-8s0x%-20llx%-8d%-9s\n",
+ OBJ_ID(&mr->mem), mr->pd, mr->mem.hdr.id,
+ mr->mem_obj ? mr->mem.is_pbl ? "PBL":"UMEM":"KVA",
+ mr->mem.len,
+ refcount_read(&mr->mem.hdr.ref),
+ mr->mem.stag_valid ? "valid" : "invalid");
+ if (n < space) {
+ len += n;
+ space -= n;
+ } else {
+ len += space;
+ break;
+ }
+ }
+out:
+ if (len)
+ len = simple_read_from_buffer(buf, len, ppos, kbuf, len);
+
+ kfree(kbuf);
+
+ return len;
+}
+
+static ssize_t siw_show_ceps(struct file *f, char __user *buf, size_t space,
+ loff_t *ppos)
+{
+ struct siw_device *sdev = FDENTRY(f)->d_inode->i_private;
+ struct list_head *pos, *tmp;
+ char *kbuf = NULL;
+ int len = 0, n, num_cep;
+
+ if (*ppos)
+ goto out;
+
+ kbuf = kmalloc(space, GFP_KERNEL);
+ if (!kbuf)
+ goto out;
+
+ num_cep = atomic_read(&sdev->num_cep);
+ if (!num_cep)
+ goto out;
+
+ len = snprintf(kbuf, space, "%s: %d CEPs\n", sdev->base_dev.name,
+ num_cep);
+ if (len > space) {
+ len = space;
+ goto out;
+ }
+ space -= len;
+
+ n = snprintf(kbuf + len, space,
+ "%-20s%-6s%-6s%-9s%-5s%-3s%-4s%-21s%-9s\n",
+ "CEP", "State", "Ref's", "QP-ID", "LQ", "LC", "U", "Sock",
+ "CM-ID");
+
+ if (n > space) {
+ len += space;
+ goto out;
+ }
+ len += n;
+ space -= n;
+
+ list_for_each_safe(pos, tmp, &sdev->cep_list) {
+ struct siw_cep *cep = list_entry(pos, struct siw_cep, devq);
+
+ n = snprintf(kbuf + len, space,
+ "0x%-18p%-6d%-6d%-9d%-5s%-3s%-4d0x%-18p 0x%-16p\n",
+ cep, cep->state,
+ refcount_read(&cep->ref),
+ cep->qp ? QP_ID(cep->qp) : -1,
+ list_empty(&cep->listenq) ? "n" : "y",
+ cep->listen_cep ? "y" : "n",
+ cep->in_use,
+ cep->llp.sock,
+ cep->cm_id);
+ if (n < space) {
+ len += n;
+ space -= n;
+ } else {
+ len += space;
+ break;
+ }
+ }
+out:
+ if (len)
+ len = simple_read_from_buffer(buf, len, ppos, kbuf, len);
+
+ kfree(kbuf);
+
+ return len;
+}
+
+static ssize_t siw_show_stats(struct file *f, char __user *buf, size_t space,
+ loff_t *ppos)
+{
+ struct siw_device *sdev = FDENTRY(f)->d_inode->i_private;
+ char *kbuf = NULL;
+ int len = 0;
+
+ if (*ppos)
+ goto out;
+
+ kbuf = kmalloc(space, GFP_KERNEL);
+ if (!kbuf)
+ goto out;
+
+ len = snprintf(kbuf, space, "Allocated SIW Objects:\n"
+ "Device %s (%s):\t"
+ "%s: %d, %s %d, %s: %d, %s: %d, %s: %d, %s: %d, %s: %d\n",
+ sdev->base_dev.name,
+ sdev->netdev->flags & IFF_UP ? "IFF_UP" : "IFF_DOWN",
+ "CXs", atomic_read(&sdev->num_ctx),
+ "PDs", atomic_read(&sdev->num_pd),
+ "QPs", atomic_read(&sdev->num_qp),
+ "CQs", atomic_read(&sdev->num_cq),
+ "SRQs", atomic_read(&sdev->num_srq),
+ "MRs", atomic_read(&sdev->num_mr),
+ "CEPs", atomic_read(&sdev->num_cep));
+ if (len > space)
+ len = space;
+out:
+ if (len)
+ len = simple_read_from_buffer(buf, len, ppos, kbuf, len);
+
+ kfree(kbuf);
+ return len;
+}
+
+static const struct file_operations siw_qp_debug_fops = {
+ .owner = THIS_MODULE,
+ .read = siw_show_qps
+};
+
+static const struct file_operations siw_mr_debug_fops = {
+ .owner = THIS_MODULE,
+ .read = siw_show_mrs
+};
+
+static const struct file_operations siw_cep_debug_fops = {
+ .owner = THIS_MODULE,
+ .read = siw_show_ceps
+};
+
+static const struct file_operations siw_stats_debug_fops = {
+ .owner = THIS_MODULE,
+ .read = siw_show_stats
+};
+
+void siw_debugfs_add_device(struct siw_device *sdev)
+{
+ struct dentry *entry;
+
+ if (!siw_debugfs)
+ return;
+
+ sdev->debugfs = debugfs_create_dir(sdev->base_dev.name, siw_debugfs);
+ if (sdev->debugfs) {
+ entry = debugfs_create_file("qp", 0400, sdev->debugfs,
+ (void *)sdev, &siw_qp_debug_fops);
+ if (!entry)
+ siw_dbg(sdev, "could not create 'qp' entry\n");
+
+ entry = debugfs_create_file("cep", 0400, sdev->debugfs,
+ (void *)sdev, &siw_cep_debug_fops);
+ if (!entry)
+ siw_dbg(sdev, "could not create 'cep' entry\n");
+
+ entry = debugfs_create_file("mr", 0400, sdev->debugfs,
+ (void *)sdev, &siw_mr_debug_fops);
+ if (!entry)
+ siw_dbg(sdev, "could not create 'qp' entry\n");
+
+ entry = debugfs_create_file("stats", 0400, sdev->debugfs,
+ (void *)sdev,
+ &siw_stats_debug_fops);
+ if (!entry)
+ siw_dbg(sdev, "could not create 'stats' entry\n");
+ }
+}
+
+void siw_debugfs_del_device(struct siw_device *sdev)
+{
+ debugfs_remove_recursive(sdev->debugfs);
+ sdev->debugfs = NULL;
+}
+
+void siw_debug_init(void)
+{
+ siw_debugfs = debugfs_create_dir("siw", NULL);
+
+ if (!siw_debugfs || siw_debugfs == ERR_PTR(-ENODEV)) {
+ pr_warn("SIW: could not init debugfs\n");
+ siw_debugfs = NULL;
+ }
+}
+
+void siw_debugfs_delete(void)
+{
+ debugfs_remove_recursive(siw_debugfs);
+ siw_debugfs = NULL;
+}
+
+void siw_print_hdr(union iwarp_hdr *hdr, int qp_id, char *msg)
+{
+ enum rdma_opcode op = __rdmap_opcode(&hdr->ctrl);
+ u16 mpa_len = be16_to_cpu(hdr->ctrl.mpa_len);
+
+ switch (op) {
+
+ case RDMAP_RDMA_WRITE:
+ pr_info("siw: [QP %d]: %s(WRITE, DDP len %d): %08x %016llx\n",
+ qp_id, msg, ddp_data_len(op, mpa_len),
+ hdr->rwrite.sink_stag, hdr->rwrite.sink_to);
+ break;
+
+ case RDMAP_RDMA_READ_REQ:
+ pr_info("siw: [QP %d]: %s(RREQ, DDP len %d): %08x %08x %08x %08x %016llx %08x %08x %016llx\n",
+ qp_id, msg,
+ ddp_data_len(op, mpa_len),
+ be32_to_cpu(hdr->rreq.ddp_qn),
+ be32_to_cpu(hdr->rreq.ddp_msn),
+ be32_to_cpu(hdr->rreq.ddp_mo),
+ be32_to_cpu(hdr->rreq.sink_stag),
+ be64_to_cpu(hdr->rreq.sink_to),
+ be32_to_cpu(hdr->rreq.read_size),
+ be32_to_cpu(hdr->rreq.source_stag),
+ be64_to_cpu(hdr->rreq.source_to));
+
+ break;
+
+ case RDMAP_RDMA_READ_RESP:
+ pr_info("siw: [QP %d]: %s(RRESP, DDP len %d): %08x %016llx\n",
+ qp_id, msg, ddp_data_len(op, mpa_len),
+ be32_to_cpu(hdr->rresp.sink_stag),
+ be64_to_cpu(hdr->rresp.sink_to));
+ break;
+
+ case RDMAP_SEND:
+ pr_info("siw: [QP %d]: %s(SEND, DDP len %d): %08x %08x %08x\n",
+ qp_id, msg, ddp_data_len(op, mpa_len),
+ be32_to_cpu(hdr->send.ddp_qn),
+ be32_to_cpu(hdr->send.ddp_msn),
+ be32_to_cpu(hdr->send.ddp_mo));
+ break;
+
+ case RDMAP_SEND_INVAL:
+ pr_info("siw: [QP %d]: %s(S_INV, DDP len %d): %08x %08x %08x %08x\n",
+ qp_id, msg, ddp_data_len(op, mpa_len),
+ be32_to_cpu(hdr->send_inv.inval_stag),
+ be32_to_cpu(hdr->send_inv.ddp_qn),
+ be32_to_cpu(hdr->send_inv.ddp_msn),
+ be32_to_cpu(hdr->send_inv.ddp_mo));
+ break;
+
+ case RDMAP_SEND_SE:
+ pr_info("siw: [QP %d]: %s(S_SE, DDP len %d): %08x %08x %08x\n",
+ qp_id, msg, ddp_data_len(op, mpa_len),
+ be32_to_cpu(hdr->send.ddp_qn),
+ be32_to_cpu(hdr->send.ddp_msn),
+ be32_to_cpu(hdr->send.ddp_mo));
+ break;
+
+ case RDMAP_SEND_SE_INVAL:
+ pr_info("siw: [QP %d]: %s(S_SE_INV, DDP len %d): %08x %08x %08x %08x\n",
+ qp_id, msg, ddp_data_len(op, mpa_len),
+ be32_to_cpu(hdr->send_inv.inval_stag),
+ be32_to_cpu(hdr->send_inv.ddp_qn),
+ be32_to_cpu(hdr->send_inv.ddp_msn),
+ be32_to_cpu(hdr->send_inv.ddp_mo));
+ break;
+
+ case RDMAP_TERMINATE:
+ pr_info("siw: [QP %d]: %s(TERM, DDP len %d):\n", qp_id, msg,
+ ddp_data_len(op, mpa_len));
+ break;
+
+ default:
+ pr_info("siw: [QP %d]: %s (undefined opcode %d)", qp_id, msg,
+ op);
+ break;
+ }
+}
+
+char ib_qp_state_to_string[IB_QPS_ERR+1][sizeof "RESET"] = {
+ [IB_QPS_RESET] = "RESET",
+ [IB_QPS_INIT] = "INIT",
+ [IB_QPS_RTR] = "RTR",
+ [IB_QPS_RTS] = "RTS",
+ [IB_QPS_SQD] = "SQD",
+ [IB_QPS_SQE] = "SQE",
+ [IB_QPS_ERR] = "ERR"
+};
diff --git a/drivers/infiniband/sw/siw/siw_debug.h b/drivers/infiniband/sw/siw/siw_debug.h
new file mode 100644
index 000000000000..b7804e826e67
--- /dev/null
+++ b/drivers/infiniband/sw/siw/siw_debug.h
@@ -0,0 +1,87 @@
+/*
+ * Software iWARP device driver
+ *
+ * Authors: Fredy Neeser <nfd-OA+xvbQnYDHMbYB6QlFGEg@public.gmane.org>
+ * Bernard Metzler <bmt-OA+xvbQnYDHMbYB6QlFGEg@public.gmane.org>
+ *
+ * Copyright (c) 2008-2017, IBM Corporation
+ *
+ * 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
+ * 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.
+ *
+ * - Neither the name of IBM nor the names of its contributors may be
+ * used to endorse or promote products derived from this software without
+ * specific prior written permission.
+ *
+ * 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.
+ */
+
+#ifndef _SIW_DEBUG_H
+#define _SIW_DEBUG_H
+
+#include <linux/uaccess.h>
+#include <linux/hardirq.h> /* in_interrupt() */
+
+struct siw_device;
+struct siw_iwarp_rx;
+union iwarp_hdr;
+
+extern void siw_debug_init(void);
+extern void siw_debugfs_add_device(struct siw_device *dev);
+extern void siw_debugfs_del_device(struct siw_device *dev);
+extern void siw_debugfs_delete(void);
+
+extern void siw_print_hdr(union iwarp_hdr *hdr, int id, char *msg);
+extern void siw_print_qp_attr_mask(enum ib_qp_attr_mask mask, char *msg);
+extern char ib_qp_state_to_string[IB_QPS_ERR+1][sizeof "RESET"];
+
+#ifndef refcount_read
+#define refcount_read(x) atomic_read(x.refcount.refs)
+#endif
+
+#define siw_dbg(ddev, fmt, ...) \
+ dev_dbg(&(ddev)->base_dev.dev, "cpu%2d %s: " fmt, smp_processor_id(),\
+ __func__, ##__VA_ARGS__)
+
+#define siw_dbg_qp(qp, fmt, ...) \
+ siw_dbg(qp->hdr.sdev, "[QP %d]: " fmt, QP_ID(qp), ##__VA_ARGS__)
+
+#define siw_dbg_cep(cep, fmt, ...) \
+ siw_dbg(cep->sdev, "[CEP 0x%p]: " fmt, cep, ##__VA_ARGS__)
+
+#define siw_dbg_obj(obj, fmt, ...) \
+ siw_dbg(obj->hdr.sdev, "[OBJ ID %d]: " fmt, obj->hdr.id, ##__VA_ARGS__)
+
+#ifdef DEBUG
+
+#define siw_dprint_hdr(h, i, m) siw_print_hdr(h, i, m)
+
+#else
+
+#define dprint(dbgcat, fmt, args...) do { } while (0)
+#define siw_dprint_hdr(h, i, m) do { } while (0)
+
+#endif
+
+#endif
--
2.13.6