diff --git a/include/net/tcp.h b/include/net/tcp.h
index 0239e815edf71e7cfbfc60bede22069d3cf2dd32..e9d387fffe22f84bc5d2a7d87e8483bf82633001 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -258,6 +258,7 @@ DECLARE_PER_CPU(int, tcp_memory_per_cpu_fw_alloc);
 
 extern struct percpu_counter tcp_sockets_allocated;
 extern unsigned long tcp_memory_pressure;
+extern int sysctl_local_port_allocation;
 
 /* optimized version of sk_under_memory_pressure() for TCP sockets */
 static inline bool tcp_under_memory_pressure(const struct sock *sk)
diff --git a/net/ipv4/inet_hashtables.c b/net/ipv4/inet_hashtables.c
index 598c1b114d2c2256fa06735b823b38cef70a8a34..919f0f8691186205e6cee6c03d854e44bd8093a7 100644
--- a/net/ipv4/inet_hashtables.c
+++ b/net/ipv4/inet_hashtables.c
@@ -1011,7 +1011,7 @@ int __inet_hash_connect(struct inet_timewait_death_row *death_row,
 	struct inet_bind_bucket *tb;
 	bool tb_created = false;
 	u32 remaining, offset;
-	int ret, i, low, high;
+	int ret, i, low, high, span_size;
 	int l3mdev;
 	u32 index;
 
@@ -1021,6 +1021,11 @@ int __inet_hash_connect(struct inet_timewait_death_row *death_row,
 		local_bh_enable();
 		return ret;
 	}
+	/* local_port_allocation 0 means even and odd port allocation strategy
+	 * will be applied, so span size is 2; otherwise sequential allocation
+	 * will be used and span size is 1. Default value is 0.
+	 */
+	span_size = sysctl_local_port_allocation ? 1 : 2;
 
 	l3mdev = inet_sk_bound_l3mdev(sk);
 
@@ -1043,7 +1048,7 @@ int __inet_hash_connect(struct inet_timewait_death_row *death_row,
 	offset &= ~1U;
 other_parity_scan:
 	port = low + offset;
-	for (i = 0; i < remaining; i += 2, port += 2) {
+	for (i = 0; i < remaining; i += span_size, port += span_size) {
 		if (unlikely(port >= high))
 			port -= remaining;
 		if (inet_is_local_reserved_port(net, port))
@@ -1084,7 +1089,7 @@ int __inet_hash_connect(struct inet_timewait_death_row *death_row,
 	}
 
 	offset++;
-	if ((offset & 1) && remaining > 1)
+	if ((offset & 1) && remaining > 1 && span_size == 2)
 		goto other_parity_scan;
 
 	return -EADDRNOTAVAIL;
diff --git a/net/ipv4/sysctl_net_ipv4.c b/net/ipv4/sysctl_net_ipv4.c
index 6ac890b4073f4583b0f98ee3294babb91bbcf482..b17eb28a969011878ae414c50d5178f1e764d8f5 100644
--- a/net/ipv4/sysctl_net_ipv4.c
+++ b/net/ipv4/sysctl_net_ipv4.c
@@ -39,6 +39,7 @@ static unsigned long ip_ping_group_range_min[] = { 0, 0 };
 static unsigned long ip_ping_group_range_max[] = { GID_T_MAX, GID_T_MAX };
 static u32 u32_max_div_HZ = UINT_MAX / HZ;
 static int one_day_secs = 24 * 3600;
+int sysctl_local_port_allocation;
 static u32 fib_multipath_hash_fields_all_mask __maybe_unused =
 	FIB_MULTIPATH_HASH_FIELD_ALL_MASK;
 static unsigned int tcp_child_ehash_entries_max = 16 * 1024 * 1024;
@@ -579,6 +580,13 @@ static struct ctl_table ipv4_table[] = {
 		.extra1		= &sysctl_fib_sync_mem_min,
 		.extra2		= &sysctl_fib_sync_mem_max,
 	},
+	{
+		.procname	= "local_port_allocation",
+		.data		= &sysctl_local_port_allocation,
+		.maxlen		= sizeof(int),
+		.mode		= 0644,
+		.proc_handler	= proc_dointvec,
+	},
 	{ }
 };