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authorUpinder Malhi <umalhi@cisco.com>2014-01-10 03:40:58 +0400
committerRoland Dreier <roland@purestorage.com>2014-01-14 12:44:46 +0400
commit9f637f7936025aef57f247b11036bad18bb87c06 (patch)
tree6f6b0f89a5e7cd16680c4fdd29c301d9161c1e88 /drivers/infiniband/hw/usnic/usnic_debugfs.c
parentc5f855e08a97edc107c4a3b73809ed629c1dcac1 (diff)
downloadlinux-9f637f7936025aef57f247b11036bad18bb87c06.tar.xz
IB/usnic: Expose flows via debugfs
Signed-off-by: Upinder Malhi <umalhi@cisco.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
Diffstat (limited to 'drivers/infiniband/hw/usnic/usnic_debugfs.c')
-rw-r--r--drivers/infiniband/hw/usnic/usnic_debugfs.c91
1 files changed, 89 insertions, 2 deletions
diff --git a/drivers/infiniband/hw/usnic/usnic_debugfs.c b/drivers/infiniband/hw/usnic/usnic_debugfs.c
index 91386df025ae..6cb2e7ca7df2 100644
--- a/drivers/infiniband/hw/usnic/usnic_debugfs.c
+++ b/drivers/infiniband/hw/usnic/usnic_debugfs.c
@@ -22,8 +22,11 @@
#include "usnic.h"
#include "usnic_log.h"
#include "usnic_debugfs.h"
+#include "usnic_ib_qp_grp.h"
+#include "usnic_transport.h"
static struct dentry *debugfs_root;
+static struct dentry *flows_dentry;
static ssize_t usnic_debugfs_buildinfo_read(struct file *f, char __user *data,
size_t count, loff_t *ppos)
@@ -48,17 +51,73 @@ static const struct file_operations usnic_debugfs_buildinfo_ops = {
.read = usnic_debugfs_buildinfo_read
};
+static ssize_t flowinfo_read(struct file *f, char __user *data,
+ size_t count, loff_t *ppos)
+{
+ struct usnic_ib_qp_grp_flow *qp_flow;
+ int n;
+ int left;
+ char *ptr;
+ char buf[512];
+
+ qp_flow = f->private_data;
+ ptr = buf;
+ left = count;
+
+ if (*ppos > 0)
+ return 0;
+
+ spin_lock(&qp_flow->qp_grp->lock);
+ n = scnprintf(ptr, left,
+ "QP Grp ID: %d Transport: %s ",
+ qp_flow->qp_grp->grp_id,
+ usnic_transport_to_str(qp_flow->trans_type));
+ UPDATE_PTR_LEFT(n, ptr, left);
+ if (qp_flow->trans_type == USNIC_TRANSPORT_ROCE_CUSTOM) {
+ n = scnprintf(ptr, left, "Port_Num:%hu\n",
+ qp_flow->usnic_roce.port_num);
+ UPDATE_PTR_LEFT(n, ptr, left);
+ } else if (qp_flow->trans_type == USNIC_TRANSPORT_IPV4_UDP) {
+ n = usnic_transport_sock_to_str(ptr, left,
+ qp_flow->udp.sock);
+ UPDATE_PTR_LEFT(n, ptr, left);
+ n = scnprintf(ptr, left, "\n");
+ UPDATE_PTR_LEFT(n, ptr, left);
+ }
+ spin_unlock(&qp_flow->qp_grp->lock);
+
+ return simple_read_from_buffer(data, count, ppos, buf, ptr - buf);
+}
+
+static const struct file_operations flowinfo_ops = {
+ .owner = THIS_MODULE,
+ .open = simple_open,
+ .read = flowinfo_read,
+};
+
void usnic_debugfs_init(void)
{
debugfs_root = debugfs_create_dir(DRV_NAME, NULL);
if (IS_ERR(debugfs_root)) {
usnic_err("Failed to create debugfs root dir, check if debugfs is enabled in kernel configuration\n");
- debugfs_root = NULL;
- return;
+ goto out_clear_root;
+ }
+
+ flows_dentry = debugfs_create_dir("flows", debugfs_root);
+ if (IS_ERR_OR_NULL(flows_dentry)) {
+ usnic_err("Failed to create debugfs flow dir with err %ld\n",
+ PTR_ERR(flows_dentry));
+ goto out_free_root;
}
debugfs_create_file("build-info", S_IRUGO, debugfs_root,
NULL, &usnic_debugfs_buildinfo_ops);
+ return;
+
+out_free_root:
+ debugfs_remove_recursive(debugfs_root);
+out_clear_root:
+ debugfs_root = NULL;
}
void usnic_debugfs_exit(void)
@@ -69,3 +128,31 @@ void usnic_debugfs_exit(void)
debugfs_remove_recursive(debugfs_root);
debugfs_root = NULL;
}
+
+void usnic_debugfs_flow_add(struct usnic_ib_qp_grp_flow *qp_flow)
+{
+ struct usnic_ib_qp_grp *qp_grp;
+
+ if (IS_ERR_OR_NULL(flows_dentry))
+ return;
+
+ qp_grp = qp_flow->qp_grp;
+
+ scnprintf(qp_flow->dentry_name, sizeof(qp_flow->dentry_name),
+ "%u", qp_flow->flow->flow_id);
+ qp_flow->dbgfs_dentry = debugfs_create_file(qp_flow->dentry_name,
+ S_IRUGO,
+ flows_dentry,
+ qp_flow,
+ &flowinfo_ops);
+ if (IS_ERR_OR_NULL(qp_flow->dbgfs_dentry)) {
+ usnic_err("Failed to create dbg fs entry for flow %u\n",
+ qp_flow->flow->flow_id);
+ }
+}
+
+void usnic_debugfs_flow_remove(struct usnic_ib_qp_grp_flow *qp_flow)
+{
+ if (!IS_ERR_OR_NULL(qp_flow->dbgfs_dentry))
+ debugfs_remove(qp_flow->dbgfs_dentry);
+}