tcp: socket option to set TCP fast open key

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New socket option TCP_FASTOPEN_KEY to allow different keys per
listener.  The listener by default uses the global key until the
socket option is set.  The key is a 16 bytes long binary data. This
option has no effect on regular non-listener TCP sockets.

Signed-off-by: Yuchung Cheng <ycheng@google.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Christoph Paasch <cpaasch@apple.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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This commit is contained in:

Yuchung Cheng 2017-10-18 11:22:51 -07:00 • committed by David S. Miller

parent ce12f7ddff

commit 1fba70e5b6

7 changed files with 82 additions and 19 deletions

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2

include/net/request_sock.h

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5

include/net/tcp.h

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1

include/uapi/linux/tcp.h

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3

net/ipv4/sysctl_net_ipv4.c

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33

net/ipv4/tcp.c

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56

net/ipv4/tcp_fastopen.c

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1

net/ipv4/tcp_ipv4.c

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