include/uapi/linux/mptcp.h

   1 /* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
   2 #ifndef _MPTCP_H
   3 #define _MPTCP_H
   4
   5 #include <linux/const.h>
   6 #include <linux/types.h>
   7
   8 #define MPTCP_SUBFLOW_FLAG_MCAP_REM             _BITUL(0)
   9 #define MPTCP_SUBFLOW_FLAG_MCAP_LOC             _BITUL(1)
  10 #define MPTCP_SUBFLOW_FLAG_JOIN_REM             _BITUL(2)
  11 #define MPTCP_SUBFLOW_FLAG_JOIN_LOC             _BITUL(3)
  12 #define MPTCP_SUBFLOW_FLAG_BKUP_REM             _BITUL(4)
  13 #define MPTCP_SUBFLOW_FLAG_BKUP_LOC             _BITUL(5)
  14 #define MPTCP_SUBFLOW_FLAG_FULLY_ESTABLISHED    _BITUL(6)
  15 #define MPTCP_SUBFLOW_FLAG_CONNECTED            _BITUL(7)
  16 #define MPTCP_SUBFLOW_FLAG_MAPVALID             _BITUL(8)
  17
  18 enum {
  19         MPTCP_SUBFLOW_ATTR_UNSPEC,
  20         MPTCP_SUBFLOW_ATTR_TOKEN_REM,
  21         MPTCP_SUBFLOW_ATTR_TOKEN_LOC,
  22         MPTCP_SUBFLOW_ATTR_RELWRITE_SEQ,
  23         MPTCP_SUBFLOW_ATTR_MAP_SEQ,
  24         MPTCP_SUBFLOW_ATTR_MAP_SFSEQ,
  25         MPTCP_SUBFLOW_ATTR_SSN_OFFSET,
  26         MPTCP_SUBFLOW_ATTR_MAP_DATALEN,
  27         MPTCP_SUBFLOW_ATTR_FLAGS,
  28         MPTCP_SUBFLOW_ATTR_ID_REM,
  29         MPTCP_SUBFLOW_ATTR_ID_LOC,
  30         MPTCP_SUBFLOW_ATTR_PAD,
  31         __MPTCP_SUBFLOW_ATTR_MAX
  32 };
  33
  34 #define MPTCP_SUBFLOW_ATTR_MAX (__MPTCP_SUBFLOW_ATTR_MAX - 1)
  35
  36 /* netlink interface */
  37 #define MPTCP_PM_NAME           "mptcp_pm"
  38 #define MPTCP_PM_CMD_GRP_NAME   "mptcp_pm_cmds"
  39 #define MPTCP_PM_VER            0x1
  40
  41 /*
  42  * ATTR types defined for MPTCP
  43  */
  44 enum {
  45         MPTCP_PM_ATTR_UNSPEC,
  46
  47         MPTCP_PM_ATTR_ADDR,                             /* nested address */
  48         MPTCP_PM_ATTR_RCV_ADD_ADDRS,                    /* u32 */
  49         MPTCP_PM_ATTR_SUBFLOWS,                         /* u32 */
  50
  51         __MPTCP_PM_ATTR_MAX
  52 };
  53
  54 #define MPTCP_PM_ATTR_MAX (__MPTCP_PM_ATTR_MAX - 1)
  55
  56 enum {
  57         MPTCP_PM_ADDR_ATTR_UNSPEC,
  58
  59         MPTCP_PM_ADDR_ATTR_FAMILY,                      /* u16 */
  60         MPTCP_PM_ADDR_ATTR_ID,                          /* u8 */
  61         MPTCP_PM_ADDR_ATTR_ADDR4,                       /* struct in_addr */
  62         MPTCP_PM_ADDR_ATTR_ADDR6,                       /* struct in6_addr */
  63         MPTCP_PM_ADDR_ATTR_PORT,                        /* u16 */
  64         MPTCP_PM_ADDR_ATTR_FLAGS,                       /* u32 */
  65         MPTCP_PM_ADDR_ATTR_IF_IDX,                      /* s32 */
  66
  67         __MPTCP_PM_ADDR_ATTR_MAX
  68 };
  69
  70 #define MPTCP_PM_ADDR_ATTR_MAX (__MPTCP_PM_ADDR_ATTR_MAX - 1)
  71
  72 #define MPTCP_PM_ADDR_FLAG_SIGNAL                       (1 << 0)
  73 #define MPTCP_PM_ADDR_FLAG_SUBFLOW                      (1 << 1)
  74 #define MPTCP_PM_ADDR_FLAG_BACKUP                       (1 << 2)
  75
  76 enum {
  77         MPTCP_PM_CMD_UNSPEC,
  78
  79         MPTCP_PM_CMD_ADD_ADDR,
  80         MPTCP_PM_CMD_DEL_ADDR,
  81         MPTCP_PM_CMD_GET_ADDR,
  82         MPTCP_PM_CMD_FLUSH_ADDRS,
  83         MPTCP_PM_CMD_SET_LIMITS,
  84         MPTCP_PM_CMD_GET_LIMITS,
  85
  86         __MPTCP_PM_CMD_AFTER_LAST
  87 };
  88
  89 #define MPTCP_INFO_FLAG_FALLBACK                _BITUL(0)
  90 #define MPTCP_INFO_FLAG_REMOTE_KEY_RECEIVED     _BITUL(1)
  91
  92 struct mptcp_info {
  93         __u8    mptcpi_subflows;
  94         __u8    mptcpi_add_addr_signal;
  95         __u8    mptcpi_add_addr_accepted;
  96         __u8    mptcpi_subflows_max;
  97         __u8    mptcpi_add_addr_signal_max;
  98         __u8    mptcpi_add_addr_accepted_max;
  99         __u32   mptcpi_flags;
 100         __u32   mptcpi_token;
 101         __u64   mptcpi_write_seq;
 102         __u64   mptcpi_snd_una;
 103         __u64   mptcpi_rcv_nxt;
 104 };
 105
 106 #endif /* _MPTCP_H */