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-rw-r--r--net/ipv4/sysctl_net_ipv4.c107
1 files changed, 100 insertions, 7 deletions
diff --git a/net/ipv4/sysctl_net_ipv4.c b/net/ipv4/sysctl_net_ipv4.c
index d6880a6..86957e9 100644
--- a/net/ipv4/sysctl_net_ipv4.c
+++ b/net/ipv4/sysctl_net_ipv4.c
@@ -24,6 +24,7 @@
#include <net/cipso_ipv4.h>
#include <net/inet_frag.h>
#include <net/ping.h>
+#include <net/protocol.h>
static int zero;
static int one = 1;
@@ -294,6 +295,74 @@ bad_key:
return ret;
}
+static void proc_configure_early_demux(int enabled, int protocol)
+{
+ struct net_protocol *ipprot;
+#if IS_ENABLED(CONFIG_IPV6)
+ struct inet6_protocol *ip6prot;
+#endif
+
+ rcu_read_lock();
+
+ ipprot = rcu_dereference(inet_protos[protocol]);
+ if (ipprot)
+ ipprot->early_demux = enabled ? ipprot->early_demux_handler :
+ NULL;
+
+#if IS_ENABLED(CONFIG_IPV6)
+ ip6prot = rcu_dereference(inet6_protos[protocol]);
+ if (ip6prot)
+ ip6prot->early_demux = enabled ? ip6prot->early_demux_handler :
+ NULL;
+#endif
+ rcu_read_unlock();
+}
+
+static int proc_tcp_early_demux(struct ctl_table *table, int write,
+ void __user *buffer, size_t *lenp, loff_t *ppos)
+{
+ int ret = 0;
+
+ ret = proc_dointvec(table, write, buffer, lenp, ppos);
+
+ if (write && !ret) {
+ int enabled = init_net.ipv4.sysctl_tcp_early_demux;
+
+ proc_configure_early_demux(enabled, IPPROTO_TCP);
+ }
+
+ return ret;
+}
+
+static int proc_udp_early_demux(struct ctl_table *table, int write,
+ void __user *buffer, size_t *lenp, loff_t *ppos)
+{
+ int ret = 0;
+
+ ret = proc_dointvec(table, write, buffer, lenp, ppos);
+
+ if (write && !ret) {
+ int enabled = init_net.ipv4.sysctl_udp_early_demux;
+
+ proc_configure_early_demux(enabled, IPPROTO_UDP);
+ }
+
+ return ret;
+}
+
+static int proc_tfo_blackhole_detect_timeout(struct ctl_table *table,
+ int write,
+ void __user *buffer,
+ size_t *lenp, loff_t *ppos)
+{
+ int ret;
+
+ ret = proc_dointvec_minmax(table, write, buffer, lenp, ppos);
+ if (write && ret == 0)
+ tcp_fastopen_active_timeout_reset();
+ return ret;
+}
+
static struct ctl_table ipv4_table[] = {
{
.procname = "tcp_timestamps",
@@ -344,6 +413,14 @@ static struct ctl_table ipv4_table[] = {
.proc_handler = proc_tcp_fastopen_key,
},
{
+ .procname = "tcp_fastopen_blackhole_timeout_sec",
+ .data = &sysctl_tcp_fastopen_blackhole_timeout,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_tfo_blackhole_detect_timeout,
+ .extra1 = &zero,
+ },
+ {
.procname = "tcp_abort_on_overflow",
.data = &sysctl_tcp_abort_on_overflow,
.maxlen = sizeof(int),
@@ -750,6 +827,20 @@ static struct ctl_table ipv4_net_table[] = {
.proc_handler = proc_dointvec
},
{
+ .procname = "udp_early_demux",
+ .data = &init_net.ipv4.sysctl_udp_early_demux,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_udp_early_demux
+ },
+ {
+ .procname = "tcp_early_demux",
+ .data = &init_net.ipv4.sysctl_tcp_early_demux,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_tcp_early_demux
+ },
+ {
.procname = "ip_default_ttl",
.data = &init_net.ipv4.sysctl_ip_default_ttl,
.maxlen = sizeof(int),
@@ -981,13 +1072,6 @@ static struct ctl_table ipv4_net_table[] = {
.proc_handler = proc_dointvec
},
{
- .procname = "tcp_tw_recycle",
- .data = &init_net.ipv4.tcp_death_row.sysctl_tw_recycle,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = proc_dointvec
- },
- {
.procname = "tcp_max_syn_backlog",
.data = &init_net.ipv4.sysctl_max_syn_backlog,
.maxlen = sizeof(int),
@@ -1004,6 +1088,15 @@ static struct ctl_table ipv4_net_table[] = {
.extra1 = &zero,
.extra2 = &one,
},
+ {
+ .procname = "fib_multipath_hash_policy",
+ .data = &init_net.ipv4.sysctl_fib_multipath_hash_policy,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec_minmax,
+ .extra1 = &zero,
+ .extra2 = &one,
+ },
#endif
{
.procname = "ip_unprivileged_port_start",
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