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1 | /* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */ |
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2 | #ifndef _UAPI_MPTCP_H |
3 | #define _UAPI_MPTCP_H |
4 | |
5 | #ifndef __KERNEL__ |
6 | #include <netinet/in.h> /* for sockaddr_in and sockaddr_in6 */ |
7 | #include <sys/socket.h> /* for struct sockaddr */ |
8 | #endif |
9 | |
10 | #include <linux/const.h> |
11 | #include <linux/types.h> |
12 | #include <linux/in.h> /* for sockaddr_in */ |
13 | #include <linux/in6.h> /* for sockaddr_in6 */ |
14 | #include <linux/socket.h> /* for sockaddr_storage and sa_family */ |
15 | |
16 | #define MPTCP_SUBFLOW_FLAG_MCAP_REM _BITUL(0) |
17 | #define MPTCP_SUBFLOW_FLAG_MCAP_LOC _BITUL(1) |
18 | #define MPTCP_SUBFLOW_FLAG_JOIN_REM _BITUL(2) |
19 | #define MPTCP_SUBFLOW_FLAG_JOIN_LOC _BITUL(3) |
20 | #define MPTCP_SUBFLOW_FLAG_BKUP_REM _BITUL(4) |
21 | #define MPTCP_SUBFLOW_FLAG_BKUP_LOC _BITUL(5) |
22 | #define MPTCP_SUBFLOW_FLAG_FULLY_ESTABLISHED _BITUL(6) |
23 | #define MPTCP_SUBFLOW_FLAG_CONNECTED _BITUL(7) |
24 | #define MPTCP_SUBFLOW_FLAG_MAPVALID _BITUL(8) |
25 | |
26 | #define MPTCP_PM_CMD_GRP_NAME "mptcp_pm_cmds" |
27 | #define MPTCP_PM_EV_GRP_NAME "mptcp_pm_events" |
28 | |
29 | #include <linux/mptcp_pm.h> |
30 | |
31 | #define MPTCP_INFO_FLAG_FALLBACK _BITUL(0) |
32 | #define MPTCP_INFO_FLAG_REMOTE_KEY_RECEIVED _BITUL(1) |
33 | |
34 | #define MPTCP_PM_ADDR_FLAG_SIGNAL (1 << 0) |
35 | #define MPTCP_PM_ADDR_FLAG_SUBFLOW (1 << 1) |
36 | #define MPTCP_PM_ADDR_FLAG_BACKUP (1 << 2) |
37 | #define MPTCP_PM_ADDR_FLAG_FULLMESH (1 << 3) |
38 | #define MPTCP_PM_ADDR_FLAG_IMPLICIT (1 << 4) |
39 | |
40 | struct mptcp_info { |
41 | __u8 mptcpi_subflows; |
42 | __u8 mptcpi_add_addr_signal; |
43 | __u8 mptcpi_add_addr_accepted; |
44 | __u8 mptcpi_subflows_max; |
45 | __u8 mptcpi_add_addr_signal_max; |
46 | __u8 mptcpi_add_addr_accepted_max; |
47 | __u32 mptcpi_flags; |
48 | __u32 mptcpi_token; |
49 | __u64 mptcpi_write_seq; |
50 | __u64 mptcpi_snd_una; |
51 | __u64 mptcpi_rcv_nxt; |
52 | __u8 mptcpi_local_addr_used; |
53 | __u8 mptcpi_local_addr_max; |
54 | __u8 mptcpi_csum_enabled; |
55 | __u32 mptcpi_retransmits; |
56 | __u64 mptcpi_bytes_retrans; |
57 | __u64 mptcpi_bytes_sent; |
58 | __u64 mptcpi_bytes_received; |
59 | __u64 mptcpi_bytes_acked; |
60 | }; |
61 | |
62 | /* MPTCP Reset reason codes, rfc8684 */ |
63 | #define MPTCP_RST_EUNSPEC 0 |
64 | #define MPTCP_RST_EMPTCP 1 |
65 | #define MPTCP_RST_ERESOURCE 2 |
66 | #define MPTCP_RST_EPROHIBIT 3 |
67 | #define MPTCP_RST_EWQ2BIG 4 |
68 | #define MPTCP_RST_EBADPERF 5 |
69 | #define MPTCP_RST_EMIDDLEBOX 6 |
70 | |
71 | struct mptcp_subflow_data { |
72 | __u32 size_subflow_data; /* size of this structure in userspace */ |
73 | __u32 num_subflows; /* must be 0, set by kernel */ |
74 | __u32 size_kernel; /* must be 0, set by kernel */ |
75 | __u32 size_user; /* size of one element in data[] */ |
76 | } __attribute__((aligned(8))); |
77 | |
78 | struct mptcp_subflow_addrs { |
79 | union { |
80 | __kernel_sa_family_t sa_family; |
81 | struct sockaddr sa_local; |
82 | struct sockaddr_in sin_local; |
83 | struct sockaddr_in6 sin6_local; |
84 | struct __kernel_sockaddr_storage ss_local; |
85 | }; |
86 | union { |
87 | struct sockaddr sa_remote; |
88 | struct sockaddr_in sin_remote; |
89 | struct sockaddr_in6 sin6_remote; |
90 | struct __kernel_sockaddr_storage ss_remote; |
91 | }; |
92 | }; |
93 | |
94 | struct mptcp_subflow_info { |
95 | __u32 id; |
96 | struct mptcp_subflow_addrs addrs; |
97 | }; |
98 | |
99 | struct mptcp_full_info { |
100 | __u32 size_tcpinfo_kernel; /* must be 0, set by kernel */ |
101 | __u32 size_tcpinfo_user; |
102 | __u32 size_sfinfo_kernel; /* must be 0, set by kernel */ |
103 | __u32 size_sfinfo_user; |
104 | __u32 num_subflows; /* must be 0, set by kernel (real subflow count) */ |
105 | __u32 size_arrays_user; /* max subflows that userspace is interested in; |
106 | * the buffers at subflow_info/tcp_info |
107 | * are respectively at least: |
108 | * size_arrays * size_sfinfo_user |
109 | * size_arrays * size_tcpinfo_user |
110 | * bytes wide |
111 | */ |
112 | __aligned_u64 subflow_info; |
113 | __aligned_u64 tcp_info; |
114 | struct mptcp_info mptcp_info; |
115 | }; |
116 | |
117 | /* MPTCP socket options */ |
118 | #define MPTCP_INFO 1 |
119 | #define MPTCP_TCPINFO 2 |
120 | #define MPTCP_SUBFLOW_ADDRS 3 |
121 | #define MPTCP_FULL_INFO 4 |
122 | |
123 | #endif /* _UAPI_MPTCP_H */ |
124 |
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