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tcp_diag: report TCP MD5 signing keys and addresses

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Report TCP MD5 (RFC2385) signing keys, addresses and address prefixes to
processes with CAP_NET_ADMIN requesting INET_DIAG_INFO. Currently it is
not possible to retrieve these from the kernel once they have been
configured on sockets.

Signed-off-by: Ivan Delalande <colona@arista.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ivan Delalande 2017-08-31 09:59:39 -07:00 • committed by David S. Miller
parent b37e88407c
commit c03fa9bcac
3 changed files with 113 additions and 6 deletions
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9
include/uapi/linux/tcp.h
View file

@ -256,4 +256,13 @@ struct tcp_md5sig {
__u8 tcpm_key[TCP_MD5SIG_MAXKEYLEN]; /* key (binary) */
};
/* INET_DIAG_MD5SIG */
struct tcp_diag_md5sig {
__u8 tcpm_family;
__u8 tcpm_prefixlen;
__u16 tcpm_keylen;
__be32 tcpm_addr[4];
__u8 tcpm_key[TCP_MD5SIG_MAXKEYLEN];
};
#endif /* _UAPI_LINUX_TCP_H */