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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.c25
1 files changed, 25 insertions, 0 deletions
diff --git a/net/ipv4/sysctl_net_ipv4.c b/net/ipv4/sysctl_net_ipv4.c
index 7065234a89a5..9bf809726066 100644
--- a/net/ipv4/sysctl_net_ipv4.c
+++ b/net/ipv4/sysctl_net_ipv4.c
@@ -360,6 +360,25 @@ static int proc_tfo_blackhole_detect_timeout(struct ctl_table *table,
ret = proc_dointvec_minmax(table, write, buffer, lenp, ppos);
if (write && ret == 0)
tcp_fastopen_active_timeout_reset();
+
+ return ret;
+}
+
+static int proc_tcp_available_ulp(struct ctl_table *ctl,
+ int write,
+ void __user *buffer, size_t *lenp,
+ loff_t *ppos)
+{
+ struct ctl_table tbl = { .maxlen = TCP_ULP_BUF_MAX, };
+ int ret;
+
+ tbl.data = kmalloc(tbl.maxlen, GFP_USER);
+ if (!tbl.data)
+ return -ENOMEM;
+ tcp_get_available_ulp(tbl.data, TCP_ULP_BUF_MAX);
+ ret = proc_dostring(&tbl, write, buffer, lenp, ppos);
+ kfree(tbl.data);
+
return ret;
}
@@ -686,6 +705,12 @@ static struct ctl_table ipv4_table[] = {
.proc_handler = proc_dointvec_ms_jiffies,
},
{
+ .procname = "tcp_available_ulp",
+ .maxlen = TCP_ULP_BUF_MAX,
+ .mode = 0444,
+ .proc_handler = proc_tcp_available_ulp,
+ },
+ {
.procname = "icmp_msgs_per_sec",
.data = &sysctl_icmp_msgs_per_sec,
.maxlen = sizeof(int),