From 57f0f512b273f60d52568b8c6b77e17f5636edc0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Andr=C3=A9=20Fabian=20Silva=20Delgado?=
 <emulatorman@parabola.nu>
Date: Wed, 5 Aug 2015 17:04:01 -0300
Subject: Initial import

---
 net/rds/iw_sysctl.c | 123 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 123 insertions(+)
 create mode 100644 net/rds/iw_sysctl.c

(limited to 'net/rds/iw_sysctl.c')

diff --git a/net/rds/iw_sysctl.c b/net/rds/iw_sysctl.c
new file mode 100644
index 000000000..139239d2c
--- /dev/null
+++ b/net/rds/iw_sysctl.c
@@ -0,0 +1,123 @@
+/*
+ * Copyright (c) 2006 Oracle.  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 <linux/kernel.h>
+#include <linux/sysctl.h>
+#include <linux/proc_fs.h>
+
+#include "iw.h"
+
+static struct ctl_table_header *rds_iw_sysctl_hdr;
+
+unsigned long rds_iw_sysctl_max_send_wr = RDS_IW_DEFAULT_SEND_WR;
+unsigned long rds_iw_sysctl_max_recv_wr = RDS_IW_DEFAULT_RECV_WR;
+unsigned long rds_iw_sysctl_max_recv_allocation = (128 * 1024 * 1024) / RDS_FRAG_SIZE;
+static unsigned long rds_iw_sysctl_max_wr_min = 1;
+/* hardware will fail CQ creation long before this */
+static unsigned long rds_iw_sysctl_max_wr_max = (u32)~0;
+
+unsigned long rds_iw_sysctl_max_unsig_wrs = 16;
+static unsigned long rds_iw_sysctl_max_unsig_wr_min = 1;
+static unsigned long rds_iw_sysctl_max_unsig_wr_max = 64;
+
+unsigned long rds_iw_sysctl_max_unsig_bytes = (16 << 20);
+static unsigned long rds_iw_sysctl_max_unsig_bytes_min = 1;
+static unsigned long rds_iw_sysctl_max_unsig_bytes_max = ~0UL;
+
+unsigned int rds_iw_sysctl_flow_control = 1;
+
+static struct ctl_table rds_iw_sysctl_table[] = {
+	{
+		.procname       = "max_send_wr",
+		.data		= &rds_iw_sysctl_max_send_wr,
+		.maxlen         = sizeof(unsigned long),
+		.mode           = 0644,
+		.proc_handler   = proc_doulongvec_minmax,
+		.extra1		= &rds_iw_sysctl_max_wr_min,
+		.extra2		= &rds_iw_sysctl_max_wr_max,
+	},
+	{
+		.procname       = "max_recv_wr",
+		.data		= &rds_iw_sysctl_max_recv_wr,
+		.maxlen         = sizeof(unsigned long),
+		.mode           = 0644,
+		.proc_handler   = proc_doulongvec_minmax,
+		.extra1		= &rds_iw_sysctl_max_wr_min,
+		.extra2		= &rds_iw_sysctl_max_wr_max,
+	},
+	{
+		.procname       = "max_unsignaled_wr",
+		.data		= &rds_iw_sysctl_max_unsig_wrs,
+		.maxlen         = sizeof(unsigned long),
+		.mode           = 0644,
+		.proc_handler   = proc_doulongvec_minmax,
+		.extra1		= &rds_iw_sysctl_max_unsig_wr_min,
+		.extra2		= &rds_iw_sysctl_max_unsig_wr_max,
+	},
+	{
+		.procname       = "max_unsignaled_bytes",
+		.data		= &rds_iw_sysctl_max_unsig_bytes,
+		.maxlen         = sizeof(unsigned long),
+		.mode           = 0644,
+		.proc_handler   = proc_doulongvec_minmax,
+		.extra1		= &rds_iw_sysctl_max_unsig_bytes_min,
+		.extra2		= &rds_iw_sysctl_max_unsig_bytes_max,
+	},
+	{
+		.procname       = "max_recv_allocation",
+		.data		= &rds_iw_sysctl_max_recv_allocation,
+		.maxlen         = sizeof(unsigned long),
+		.mode           = 0644,
+		.proc_handler   = proc_doulongvec_minmax,
+	},
+	{
+		.procname	= "flow_control",
+		.data		= &rds_iw_sysctl_flow_control,
+		.maxlen		= sizeof(rds_iw_sysctl_flow_control),
+		.mode		= 0644,
+		.proc_handler	= proc_dointvec,
+	},
+	{ }
+};
+
+void rds_iw_sysctl_exit(void)
+{
+	unregister_net_sysctl_table(rds_iw_sysctl_hdr);
+}
+
+int rds_iw_sysctl_init(void)
+{
+	rds_iw_sysctl_hdr = register_net_sysctl(&init_net, "net/rds/iw", rds_iw_sysctl_table);
+	if (!rds_iw_sysctl_hdr)
+		return -ENOMEM;
+	return 0;
+}
-- 
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