155 lines
4.0 KiB
C
155 lines
4.0 KiB
C
/*
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* Copyright (c) 2013, Cisco Systems, Inc. All rights reserved.
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*
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* This program is free software; you may redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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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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*/
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#include <linux/debugfs.h>
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#include <linux/module.h>
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#include "usnic.h"
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#include "usnic_log.h"
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#include "usnic_debugfs.h"
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#include "usnic_ib_qp_grp.h"
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#include "usnic_transport.h"
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static struct dentry *debugfs_root;
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static struct dentry *flows_dentry;
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static ssize_t usnic_debugfs_buildinfo_read(struct file *f, char __user *data,
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size_t count, loff_t *ppos)
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{
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char buf[500];
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int res;
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if (*ppos > 0)
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return 0;
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res = scnprintf(buf, sizeof(buf),
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"version: %s\n"
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"build date: %s\n",
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DRV_VERSION, DRV_RELDATE);
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return simple_read_from_buffer(data, count, ppos, buf, res);
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}
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static const struct file_operations usnic_debugfs_buildinfo_ops = {
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.owner = THIS_MODULE,
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.open = simple_open,
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.read = usnic_debugfs_buildinfo_read
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};
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static ssize_t flowinfo_read(struct file *f, char __user *data,
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size_t count, loff_t *ppos)
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{
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struct usnic_ib_qp_grp_flow *qp_flow;
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int n;
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int left;
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char *ptr;
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char buf[512];
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qp_flow = f->private_data;
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ptr = buf;
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left = count;
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if (*ppos > 0)
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return 0;
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spin_lock(&qp_flow->qp_grp->lock);
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n = scnprintf(ptr, left,
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"QP Grp ID: %d Transport: %s ",
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qp_flow->qp_grp->grp_id,
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usnic_transport_to_str(qp_flow->trans_type));
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UPDATE_PTR_LEFT(n, ptr, left);
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if (qp_flow->trans_type == USNIC_TRANSPORT_ROCE_CUSTOM) {
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n = scnprintf(ptr, left, "Port_Num:%hu\n",
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qp_flow->usnic_roce.port_num);
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UPDATE_PTR_LEFT(n, ptr, left);
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} else if (qp_flow->trans_type == USNIC_TRANSPORT_IPV4_UDP) {
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n = usnic_transport_sock_to_str(ptr, left,
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qp_flow->udp.sock);
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UPDATE_PTR_LEFT(n, ptr, left);
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n = scnprintf(ptr, left, "\n");
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UPDATE_PTR_LEFT(n, ptr, left);
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}
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spin_unlock(&qp_flow->qp_grp->lock);
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return simple_read_from_buffer(data, count, ppos, buf, ptr - buf);
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}
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static const struct file_operations flowinfo_ops = {
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.owner = THIS_MODULE,
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.open = simple_open,
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.read = flowinfo_read,
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};
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void usnic_debugfs_init(void)
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{
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debugfs_root = debugfs_create_dir(DRV_NAME, NULL);
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if (IS_ERR(debugfs_root)) {
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usnic_err("Failed to create debugfs root dir, check if debugfs is enabled in kernel configuration\n");
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goto out_clear_root;
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}
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flows_dentry = debugfs_create_dir("flows", debugfs_root);
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if (IS_ERR_OR_NULL(flows_dentry)) {
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usnic_err("Failed to create debugfs flow dir with err %ld\n",
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PTR_ERR(flows_dentry));
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goto out_free_root;
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}
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debugfs_create_file("build-info", S_IRUGO, debugfs_root,
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NULL, &usnic_debugfs_buildinfo_ops);
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return;
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out_free_root:
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debugfs_remove_recursive(debugfs_root);
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out_clear_root:
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debugfs_root = NULL;
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}
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void usnic_debugfs_exit(void)
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{
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if (!debugfs_root)
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return;
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debugfs_remove_recursive(debugfs_root);
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debugfs_root = NULL;
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}
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void usnic_debugfs_flow_add(struct usnic_ib_qp_grp_flow *qp_flow)
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{
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if (IS_ERR_OR_NULL(flows_dentry))
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return;
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scnprintf(qp_flow->dentry_name, sizeof(qp_flow->dentry_name),
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"%u", qp_flow->flow->flow_id);
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qp_flow->dbgfs_dentry = debugfs_create_file(qp_flow->dentry_name,
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S_IRUGO,
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flows_dentry,
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qp_flow,
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&flowinfo_ops);
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if (IS_ERR_OR_NULL(qp_flow->dbgfs_dentry)) {
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usnic_err("Failed to create dbg fs entry for flow %u\n",
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qp_flow->flow->flow_id);
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}
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}
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void usnic_debugfs_flow_remove(struct usnic_ib_qp_grp_flow *qp_flow)
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{
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if (!IS_ERR_OR_NULL(qp_flow->dbgfs_dentry))
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debugfs_remove(qp_flow->dbgfs_dentry);
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}
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