15147dfb5SDavide Caratti /* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */ 25147dfb5SDavide Caratti #ifndef _UAPI_MPTCP_H 35147dfb5SDavide Caratti #define _UAPI_MPTCP_H 45147dfb5SDavide Caratti 506e445f7SOssama Othman #ifndef __KERNEL__ 606e445f7SOssama Othman #include <netinet/in.h> /* for sockaddr_in and sockaddr_in6 */ 706e445f7SOssama Othman #include <sys/socket.h> /* for struct sockaddr */ 806e445f7SOssama Othman #endif 906e445f7SOssama Othman 105147dfb5SDavide Caratti #include <linux/const.h> 115147dfb5SDavide Caratti #include <linux/types.h> 12c11c5906SFlorian Westphal #include <linux/in.h> /* for sockaddr_in */ 13c11c5906SFlorian Westphal #include <linux/in6.h> /* for sockaddr_in6 */ 14c11c5906SFlorian Westphal #include <linux/socket.h> /* for sockaddr_storage and sa_family */ 15c11c5906SFlorian Westphal 165147dfb5SDavide Caratti #define MPTCP_SUBFLOW_FLAG_MCAP_REM _BITUL(0) 175147dfb5SDavide Caratti #define MPTCP_SUBFLOW_FLAG_MCAP_LOC _BITUL(1) 185147dfb5SDavide Caratti #define MPTCP_SUBFLOW_FLAG_JOIN_REM _BITUL(2) 195147dfb5SDavide Caratti #define MPTCP_SUBFLOW_FLAG_JOIN_LOC _BITUL(3) 205147dfb5SDavide Caratti #define MPTCP_SUBFLOW_FLAG_BKUP_REM _BITUL(4) 215147dfb5SDavide Caratti #define MPTCP_SUBFLOW_FLAG_BKUP_LOC _BITUL(5) 225147dfb5SDavide Caratti #define MPTCP_SUBFLOW_FLAG_FULLY_ESTABLISHED _BITUL(6) 235147dfb5SDavide Caratti #define MPTCP_SUBFLOW_FLAG_CONNECTED _BITUL(7) 245147dfb5SDavide Caratti #define MPTCP_SUBFLOW_FLAG_MAPVALID _BITUL(8) 255147dfb5SDavide Caratti 2601cacb00SPaolo Abeni #define MPTCP_PM_CMD_GRP_NAME "mptcp_pm_cmds" 27b911c97cSFlorian Westphal #define MPTCP_PM_EV_GRP_NAME "mptcp_pm_events" 2801cacb00SPaolo Abeni 299d1ed17fSDavide Caratti #include <linux/mptcp_pm.h> 3001cacb00SPaolo Abeni 319d1ed17fSDavide Caratti #define MPTCP_INFO_FLAG_FALLBACK _BITUL(0) 329d1ed17fSDavide Caratti #define MPTCP_INFO_FLAG_REMOTE_KEY_RECEIVED _BITUL(1) 3301cacb00SPaolo Abeni 3401cacb00SPaolo Abeni #define MPTCP_PM_ADDR_FLAG_SIGNAL (1 << 0) 3501cacb00SPaolo Abeni #define MPTCP_PM_ADDR_FLAG_SUBFLOW (1 << 1) 3601cacb00SPaolo Abeni #define MPTCP_PM_ADDR_FLAG_BACKUP (1 << 2) 372843ff6fSGeliang Tang #define MPTCP_PM_ADDR_FLAG_FULLMESH (1 << 3) 38d045b9ebSPaolo Abeni #define MPTCP_PM_ADDR_FLAG_IMPLICIT (1 << 4) 3901cacb00SPaolo Abeni 40ac3b45f6SPaolo Abeni struct mptcp_info { 41ac3b45f6SPaolo Abeni __u8 mptcpi_subflows; 42ac3b45f6SPaolo Abeni __u8 mptcpi_add_addr_signal; 43ac3b45f6SPaolo Abeni __u8 mptcpi_add_addr_accepted; 44ac3b45f6SPaolo Abeni __u8 mptcpi_subflows_max; 45ac3b45f6SPaolo Abeni __u8 mptcpi_add_addr_signal_max; 46ac3b45f6SPaolo Abeni __u8 mptcpi_add_addr_accepted_max; 47ac3b45f6SPaolo Abeni __u32 mptcpi_flags; 48ac3b45f6SPaolo Abeni __u32 mptcpi_token; 49ac3b45f6SPaolo Abeni __u64 mptcpi_write_seq; 50ac3b45f6SPaolo Abeni __u64 mptcpi_snd_una; 51ac3b45f6SPaolo Abeni __u64 mptcpi_rcv_nxt; 520caf3adaSGeliang Tang __u8 mptcpi_local_addr_used; 530caf3adaSGeliang Tang __u8 mptcpi_local_addr_max; 54752e9067SGeliang Tang __u8 mptcpi_csum_enabled; 5538967f42SPaolo Abeni __u32 mptcpi_retransmits; 5638967f42SPaolo Abeni __u64 mptcpi_bytes_retrans; 5738967f42SPaolo Abeni __u64 mptcpi_bytes_sent; 5838967f42SPaolo Abeni __u64 mptcpi_bytes_received; 5938967f42SPaolo Abeni __u64 mptcpi_bytes_acked; 60*6ebf6f90SGeliang Tang __u8 mptcpi_subflows_total; 61ac3b45f6SPaolo Abeni }; 62ac3b45f6SPaolo Abeni 63dc87efdbSFlorian Westphal /* MPTCP Reset reason codes, rfc8684 */ 64dc87efdbSFlorian Westphal #define MPTCP_RST_EUNSPEC 0 65dc87efdbSFlorian Westphal #define MPTCP_RST_EMPTCP 1 66dc87efdbSFlorian Westphal #define MPTCP_RST_ERESOURCE 2 67dc87efdbSFlorian Westphal #define MPTCP_RST_EPROHIBIT 3 68dc87efdbSFlorian Westphal #define MPTCP_RST_EWQ2BIG 4 69dc87efdbSFlorian Westphal #define MPTCP_RST_EBADPERF 5 70dc87efdbSFlorian Westphal #define MPTCP_RST_EMIDDLEBOX 6 71dc87efdbSFlorian Westphal 7206f15ceeSFlorian Westphal struct mptcp_subflow_data { 7306f15ceeSFlorian Westphal __u32 size_subflow_data; /* size of this structure in userspace */ 7406f15ceeSFlorian Westphal __u32 num_subflows; /* must be 0, set by kernel */ 7506f15ceeSFlorian Westphal __u32 size_kernel; /* must be 0, set by kernel */ 7606f15ceeSFlorian Westphal __u32 size_user; /* size of one element in data[] */ 7706f15ceeSFlorian Westphal } __attribute__((aligned(8))); 7806f15ceeSFlorian Westphal 79c11c5906SFlorian Westphal struct mptcp_subflow_addrs { 80c11c5906SFlorian Westphal union { 81c11c5906SFlorian Westphal __kernel_sa_family_t sa_family; 82c11c5906SFlorian Westphal struct sockaddr sa_local; 83c11c5906SFlorian Westphal struct sockaddr_in sin_local; 84c11c5906SFlorian Westphal struct sockaddr_in6 sin6_local; 85c11c5906SFlorian Westphal struct __kernel_sockaddr_storage ss_local; 86c11c5906SFlorian Westphal }; 87c11c5906SFlorian Westphal union { 88c11c5906SFlorian Westphal struct sockaddr sa_remote; 89c11c5906SFlorian Westphal struct sockaddr_in sin_remote; 90c11c5906SFlorian Westphal struct sockaddr_in6 sin6_remote; 91c11c5906SFlorian Westphal struct __kernel_sockaddr_storage ss_remote; 92c11c5906SFlorian Westphal }; 93c11c5906SFlorian Westphal }; 94c11c5906SFlorian Westphal 9549243207SPaolo Abeni struct mptcp_subflow_info { 9649243207SPaolo Abeni __u32 id; 9749243207SPaolo Abeni struct mptcp_subflow_addrs addrs; 9849243207SPaolo Abeni }; 9949243207SPaolo Abeni 10049243207SPaolo Abeni struct mptcp_full_info { 10149243207SPaolo Abeni __u32 size_tcpinfo_kernel; /* must be 0, set by kernel */ 10249243207SPaolo Abeni __u32 size_tcpinfo_user; 10349243207SPaolo Abeni __u32 size_sfinfo_kernel; /* must be 0, set by kernel */ 10449243207SPaolo Abeni __u32 size_sfinfo_user; 10549243207SPaolo Abeni __u32 num_subflows; /* must be 0, set by kernel (real subflow count) */ 10649243207SPaolo Abeni __u32 size_arrays_user; /* max subflows that userspace is interested in; 10749243207SPaolo Abeni * the buffers at subflow_info/tcp_info 10849243207SPaolo Abeni * are respectively at least: 10949243207SPaolo Abeni * size_arrays * size_sfinfo_user 11049243207SPaolo Abeni * size_arrays * size_tcpinfo_user 11149243207SPaolo Abeni * bytes wide 11249243207SPaolo Abeni */ 11349243207SPaolo Abeni __aligned_u64 subflow_info; 11449243207SPaolo Abeni __aligned_u64 tcp_info; 11549243207SPaolo Abeni struct mptcp_info mptcp_info; 11649243207SPaolo Abeni }; 11749243207SPaolo Abeni 11855c42fa7SFlorian Westphal /* MPTCP socket options */ 11955c42fa7SFlorian Westphal #define MPTCP_INFO 1 12006f15ceeSFlorian Westphal #define MPTCP_TCPINFO 2 121c11c5906SFlorian Westphal #define MPTCP_SUBFLOW_ADDRS 3 12249243207SPaolo Abeni #define MPTCP_FULL_INFO 4 12355c42fa7SFlorian Westphal 1245147dfb5SDavide Caratti #endif /* _UAPI_MPTCP_H */ 125