tcp: add tcp_rx_skb_cache sysctl

[thirdparty/linux.git] / net / ipv4 / sysctl_net_ipv4.c

diff --git a/net/ipv4/sysctl_net_ipv4.c b/net/ipv4/sysctl_net_ipv4.c
index 875867b64d6a6597bf4fcd3498ed55741cbe33f7..886b58d31351df44725bdc34081e798bcb89ecf0 100644 (file)
--- a/net/ipv4/sysctl_net_ipv4.c
+++ b/net/ipv4/sysctl_net_ipv4.c
@@ -51,6 +51,9 @@ static int comp_sack_nr_max = 255;
 static u32 u32_max_div_HZ = UINT_MAX / HZ;
 static int one_day_secs = 24 * 3600;
 
+DEFINE_STATIC_KEY_FALSE(tcp_rx_skb_cache_key);
+EXPORT_SYMBOL(tcp_rx_skb_cache_key);
+
 /* obsolete */
 static int sysctl_tcp_low_latency __read_mostly;
 
@@ -559,6 +562,12 @@ static struct ctl_table ipv4_table[] = {
                .extra1         = &sysctl_fib_sync_mem_min,
                .extra2         = &sysctl_fib_sync_mem_max,
        },
+       {
+               .procname       = "tcp_rx_skb_cache",
+               .data           = &tcp_rx_skb_cache_key.key,
+               .mode           = 0644,
+               .proc_handler   = proc_do_static_key,
+       },
        { }
 };