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path: root/net/ipv4/sysctl_net_ipv4.c
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Diffstat (limited to 'net/ipv4/sysctl_net_ipv4.c')
-rw-r--r--net/ipv4/sysctl_net_ipv4.c76
1 files changed, 76 insertions, 0 deletions
diff --git a/net/ipv4/sysctl_net_ipv4.c b/net/ipv4/sysctl_net_ipv4.c
index 15061b314411..dfcf47f10f88 100644
--- a/net/ipv4/sysctl_net_ipv4.c
+++ b/net/ipv4/sysctl_net_ipv4.c
@@ -129,6 +129,67 @@ static int sysctl_tcp_congestion_control(ctl_table *table, int __user *name,
return ret;
}
+static int proc_tcp_available_congestion_control(ctl_table *ctl,
+ int write, struct file * filp,
+ void __user *buffer, size_t *lenp,
+ loff_t *ppos)
+{
+ ctl_table tbl = { .maxlen = TCP_CA_BUF_MAX, };
+ int ret;
+
+ tbl.data = kmalloc(tbl.maxlen, GFP_USER);
+ if (!tbl.data)
+ return -ENOMEM;
+ tcp_get_available_congestion_control(tbl.data, TCP_CA_BUF_MAX);
+ ret = proc_dostring(&tbl, write, filp, buffer, lenp, ppos);
+ kfree(tbl.data);
+ return ret;
+}
+
+static int proc_allowed_congestion_control(ctl_table *ctl,
+ int write, struct file * filp,
+ void __user *buffer, size_t *lenp,
+ loff_t *ppos)
+{
+ ctl_table tbl = { .maxlen = TCP_CA_BUF_MAX };
+ int ret;
+
+ tbl.data = kmalloc(tbl.maxlen, GFP_USER);
+ if (!tbl.data)
+ return -ENOMEM;
+
+ tcp_get_allowed_congestion_control(tbl.data, tbl.maxlen);
+ ret = proc_dostring(&tbl, write, filp, buffer, lenp, ppos);
+ if (write && ret == 0)
+ ret = tcp_set_allowed_congestion_control(tbl.data);
+ kfree(tbl.data);
+ return ret;
+}
+
+static int strategy_allowed_congestion_control(ctl_table *table, int __user *name,
+ int nlen, void __user *oldval,
+ size_t __user *oldlenp,
+ void __user *newval, size_t newlen,
+ void **context)
+{
+ ctl_table tbl = { .maxlen = TCP_CA_BUF_MAX };
+ int ret;
+
+ tbl.data = kmalloc(tbl.maxlen, GFP_USER);
+ if (!tbl.data)
+ return -ENOMEM;
+
+ tcp_get_available_congestion_control(tbl.data, tbl.maxlen);
+ ret = sysctl_string(&tbl, name, nlen, oldval, oldlenp, newval, newlen,
+ context);
+ if (ret == 0 && newval && newlen)
+ ret = tcp_set_allowed_congestion_control(tbl.data);
+ kfree(tbl.data);
+
+ return ret;
+
+}
+
ctl_table ipv4_table[] = {
{
.ctl_name = NET_IPV4_TCP_TIMESTAMPS,
@@ -731,6 +792,21 @@ ctl_table ipv4_table[] = {
.proc_handler = &proc_dointvec,
},
#endif /* CONFIG_NETLABEL */
+ {
+ .ctl_name = NET_TCP_AVAIL_CONG_CONTROL,
+ .procname = "tcp_available_congestion_control",
+ .maxlen = TCP_CA_BUF_MAX,
+ .mode = 0444,
+ .proc_handler = &proc_tcp_available_congestion_control,
+ },
+ {
+ .ctl_name = NET_TCP_ALLOWED_CONG_CONTROL,
+ .procname = "tcp_allowed_congestion_control",
+ .maxlen = TCP_CA_BUF_MAX,
+ .mode = 0644,
+ .proc_handler = &proc_allowed_congestion_control,
+ .strategy = &strategy_allowed_congestion_control,
+ },
{ .ctl_name = 0 }
};