--- zzzz-none-000/linux-4.19.183/include/uapi/linux/tcp.h	2021-03-24 10:07:39.000000000 +0000
+++ bcm63-7530ax-756/linux-4.19.183/include/uapi/linux/tcp.h	2023-06-28 08:54:20.000000000 +0000
@@ -18,10 +18,26 @@
 #ifndef _UAPI_LINUX_TCP_H
 #define _UAPI_LINUX_TCP_H
 
+#if ((defined(CONFIG_BCM_KF_MPTCP) && defined(CONFIG_BCM_MPTCP)) || !defined(CONFIG_BCM_IN_KERNEL))
+
+#ifndef __KERNEL__
+#include <sys/socket.h>
+#endif
+
+#include <asm/byteorder.h>
+#include <linux/in.h>
+#include <linux/in6.h>
+#include <linux/socket.h>
+#include <linux/types.h>
+
+#else
+
 #include <linux/types.h>
 #include <asm/byteorder.h>
 #include <linux/socket.h>
 
+#endif
+
 struct tcphdr {
 	__be16	source;
 	__be16	dest;
@@ -131,6 +147,15 @@
 #define TCP_REPAIR_OFF		0
 #define TCP_REPAIR_OFF_NO_WP	-1	/* Turn off without window probes */
 
+#if ((defined(CONFIG_BCM_KF_MPTCP) && defined(CONFIG_BCM_MPTCP)) || !defined(CONFIG_BCM_IN_KERNEL))
+#define MPTCP_ENABLED		42
+#define MPTCP_SCHEDULER		43
+#define MPTCP_PATH_MANAGER	44
+#define MPTCP_INFO		45
+
+#define MPTCP_INFO_FLAG_SAVE_MASTER	0x01
+
+#endif
 struct tcp_repair_opt {
 	__u32	opt_code;
 	__u32	opt_val;
@@ -268,6 +293,55 @@
 	TCP_NLA_REORD_SEEN,	/* reordering events seen */
 };
 
+#if ((defined(CONFIG_BCM_KF_MPTCP) && defined(CONFIG_BCM_MPTCP)) || !defined(CONFIG_BCM_IN_KERNEL))
+struct mptcp_meta_info {
+	__u8	mptcpi_state;
+	__u8	mptcpi_retransmits;
+	__u8	mptcpi_probes;
+	__u8	mptcpi_backoff;
+
+	__u32	mptcpi_rto;
+	__u32	mptcpi_unacked;
+
+	/* Times. */
+	__u32	mptcpi_last_data_sent;
+	__u32	mptcpi_last_data_recv;
+	__u32	mptcpi_last_ack_recv;
+
+	__u32	mptcpi_total_retrans;
+
+	__u64	mptcpi_bytes_acked;    /* RFC4898 tcpEStatsAppHCThruOctetsAcked */
+	__u64	mptcpi_bytes_received; /* RFC4898 tcpEStatsAppHCThruOctetsReceived */
+};
+
+struct mptcp_sub_info {
+	union {
+		struct sockaddr src;
+		struct sockaddr_in src_v4;
+		struct sockaddr_in6 src_v6;
+	};
+
+	union {
+		struct sockaddr dst;
+		struct sockaddr_in dst_v4;
+		struct sockaddr_in6 dst_v6;
+	};
+};
+
+struct mptcp_info {
+	__u32	tcp_info_len;	/* Length of each struct tcp_info in subflows pointer */
+	__u32	sub_len;	/* Total length of memory pointed to by subflows pointer */
+	__u32	meta_len;	/* Length of memory pointed to by meta_info */
+	__u32	sub_info_len;	/* Length of each struct mptcp_sub_info in subflow_info pointer */
+	__u32	total_sub_info_len;	/* Total length of memory pointed to by subflow_info */
+
+	struct mptcp_meta_info	*meta_info;
+	struct tcp_info		*initial;
+	struct tcp_info		*subflows;	/* Pointer to array of tcp_info structs */
+	struct mptcp_sub_info	*subflow_info;
+};
+
+#endif
 /* for TCP_MD5SIG socket option */
 #define TCP_MD5SIG_MAXKEYLEN	80