netdev - [PATCH net-next 1/5] RDS: Re-add pf/sol access via sysctl

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Date:   Tue, 13 Aug 2019 11:20:57 -0700
From:   Gerd Rausch <gerd.rausch@...cle.com>
To:     Santosh Shilimkar <santosh.shilimkar@...cle.com>,
        netdev@...r.kernel.org, linux-rdma@...r.kernel.org,
        rds-devel@....oracle.com
Cc:     David Miller <davem@...emloft.net>
Subject: [PATCH net-next 1/5] RDS: Re-add pf/sol access via sysctl

From: Andy Grover <andy.grover@...cle.com>
Date: Tue, 24 Nov 2009 15:35:51 -0800

Although RDS has an official PF_RDS value now, existing software
expects to look for rds sysctls to determine it. We need to maintain
these for now, for backwards compatibility.

Signed-off-by: Andy Grover <andy.grover@...cle.com>
Signed-off-by: Gerd Rausch <gerd.rausch@...cle.com>
---
 net/rds/sysctl.c | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/net/rds/sysctl.c b/net/rds/sysctl.c
index e381bbcd9cc1..9760292a0af4 100644
--- a/net/rds/sysctl.c
+++ b/net/rds/sysctl.c
@@ -49,6 +49,13 @@ unsigned int  rds_sysctl_max_unacked_bytes = (16 << 20);
 
 unsigned int rds_sysctl_ping_enable = 1;
 
+/*
+ * We have official values, but must maintain the sysctl interface for existing
+ * software that expects to find these values here.
+ */
+static int rds_sysctl_pf_rds = PF_RDS;
+static int rds_sysctl_sol_rds = SOL_RDS;
+
 static struct ctl_table rds_sysctl_rds_table[] = {
 	{
 		.procname       = "reconnect_min_delay_ms",
@@ -68,6 +75,20 @@ static struct ctl_table rds_sysctl_rds_table[] = {
 		.extra1		= &rds_sysctl_reconnect_min_jiffies,
 		.extra2		= &rds_sysctl_reconnect_max,
 	},
+	{
+		.procname       = "pf_rds",
+		.data		= &rds_sysctl_pf_rds,
+		.maxlen         = sizeof(int),
+		.mode           = 0444,
+		.proc_handler   = &proc_dointvec,
+	},
+	{
+		.procname       = "sol_rds",
+		.data		= &rds_sysctl_sol_rds,
+		.maxlen         = sizeof(int),
+		.mode           = 0444,
+		.proc_handler   = &proc_dointvec,
+	},
 	{
 		.procname	= "max_unacked_packets",
 		.data		= &rds_sysctl_max_unacked_packets,
-- 
2.22.0