[LLC]: Add sysctl support for the LLC timeouts

Signed-off-by: Jochen Friedrich <jochen@scram.de>
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>

1 files changed, 136 insertions, 0 deletions

diff --git a/net/llc/sysctl_net_llc.c b/net/llc/sysctl_net_llc.c
new file mode 100644
index 000000000000..4d99d2f27a21
--- /dev/null
+++ b/net/llc/sysctl_net_llc.c
@@ -0,0 +1,136 @@
+/*
+ * sysctl_net_llc.c: sysctl interface to LLC net subsystem.
+ * 
+ * Arnaldo Carvalho de Melo <acme@conectiva.com.br>
+ */
+
+#include <linux/config.h>
+#include <linux/mm.h>
+#include <linux/init.h>
+#include <linux/sysctl.h>
+
+#ifndef CONFIG_SYSCTL
+#error This file should not be compiled without CONFIG_SYSCTL defined
+#endif
+
+extern int sysctl_llc2_ack_timeout;
+extern int sysctl_llc2_busy_timeout;
+extern int sysctl_llc2_p_timeout;
+extern int sysctl_llc2_rej_timeout;
+extern int sysctl_llc_station_ack_timeout;
+
+static struct ctl_table llc2_timeout_table[] = {
+        {
+                .ctl_name       = NET_LLC2_ACK_TIMEOUT,
+                .procname       = "ack",
+                .data           = &sysctl_llc2_ack_timeout,
+                .maxlen         = sizeof(long),
+                .mode           = 0644,
+                .proc_handler   = &proc_dointvec_jiffies,
+                .strategy       = &sysctl_jiffies,
+        },
+        {
+                .ctl_name       = NET_LLC2_BUSY_TIMEOUT,
+                .procname       = "busy",
+                .data           = &sysctl_llc2_busy_timeout,
+                .maxlen         = sizeof(long),
+                .mode           = 0644,
+                .proc_handler   = &proc_dointvec_jiffies,
+                .strategy       = &sysctl_jiffies,
+        },
+        {
+                .ctl_name       = NET_LLC2_P_TIMEOUT,
+                .procname       = "p",
+                .data           = &sysctl_llc2_p_timeout,
+                .maxlen         = sizeof(long),
+                .mode           = 0644,
+                .proc_handler   = &proc_dointvec_jiffies,
+                .strategy       = &sysctl_jiffies,
+        },
+        {
+                .ctl_name       = NET_LLC2_REJ_TIMEOUT,
+                .procname       = "rej",
+                .data           = &sysctl_llc2_rej_timeout,
+                .maxlen         = sizeof(long),
+                .mode           = 0644,
+                .proc_handler   = &proc_dointvec_jiffies,
+                .strategy       = &sysctl_jiffies,
+        },
+        { 0 },
+};
+
+static struct ctl_table llc_station_table[] = {
+        {
+                .ctl_name       = NET_LLC_STATION_ACK_TIMEOUT,
+                .procname       = "ack_timeout",
+                .data           = &sysctl_llc_station_ack_timeout,
+                .maxlen         = sizeof(long),
+                .mode           = 0644,
+                .proc_handler   = &proc_dointvec_jiffies,
+                .strategy       = &sysctl_jiffies,
+        },
+        { 0 },
+};
+
+static struct ctl_table llc2_dir_timeout_table[] = {
+        {
+                .ctl_name       = NET_LLC2,
+                .procname       = "timeout",
+                .mode           = 0555,
+                .child          = llc2_timeout_table,
+        },
+        { 0 },
+};
+
+static struct ctl_table llc_table[] = {
+        {
+                .ctl_name       = NET_LLC2,
+                .procname       = "llc2",
+                .mode           = 0555,
+                .child          = llc2_dir_timeout_table,
+        },
+        {
+                .ctl_name       = NET_LLC_STATION,
+                .procname       = "station",
+                .mode           = 0555,
+                .child          = llc_station_table,
+        },
+        { 0 },
+};
+
+static struct ctl_table llc_dir_table[] = {
+        {
+                .ctl_name       = NET_LLC,
+                .procname       = "llc",
+                .mode           = 0555,
+                .child          = llc_table,
+        },
+        { 0 },
+};
+
+static struct ctl_table llc_root_table[] = {
+        {
+                .ctl_name       = CTL_NET,
+                .procname       = "net",
+                .mode           = 0555,
+                .child          = llc_dir_table,
+        },
+        { 0 },
+};
+
+static struct ctl_table_header *llc_table_header;
+
+int __init llc_sysctl_init(void)
+{
+        llc_table_header = register_sysctl_table(llc_root_table, 1);
+
+        return llc_table_header ? 0 : -ENOMEM;
+}
+
+void llc_sysctl_exit(void)
+{
+        if (llc_table_header) {
+                unregister_sysctl_table(llc_table_header);
+                llc_table_header = NULL;
+        }
+}