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mptcp: add MPTCP socket diag interface

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exposes basic inet socket attribute, plus some MPTCP socket
fields comprising PM status and MPTCP-level sequence numbers.

Reviewed-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Paolo Abeni
2020-07-09 15:12:41 +02:00
committed by David S. Miller
parent 96d890daad
commit ac3b45f609
4 changed files with 192 additions and 0 deletions
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17
include/uapi/linux/mptcp.h
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@@ -86,4 +86,21 @@ enum {
__MPTCP_PM_CMD_AFTER_LAST
};
#define MPTCP_INFO_FLAG_FALLBACK _BITUL(0)
#define MPTCP_INFO_FLAG_REMOTE_KEY_RECEIVED _BITUL(1)
struct mptcp_info {
__u8 mptcpi_subflows;
__u8 mptcpi_add_addr_signal;
__u8 mptcpi_add_addr_accepted;
__u8 mptcpi_subflows_max;
__u8 mptcpi_add_addr_signal_max;
__u8 mptcpi_add_addr_accepted_max;
__u32 mptcpi_flags;
__u32 mptcpi_token;
__u64 mptcpi_write_seq;
__u64 mptcpi_snd_una;
__u64 mptcpi_rcv_nxt;
};
#endif /* _UAPI_MPTCP_H */