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tcp: Add clean acked data hook

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Called when a TCP segment is acknowledged.
Could be used by application protocols who hold additional
metadata associated with the stream data.

This is required by TLS device offload to release
metadata associated with acknowledged TLS records.

Signed-off-by: Ilya Lesokhin <ilyal@mellanox.com>
Signed-off-by: Boris Pismenny <borisp@mellanox.com>
Signed-off-by: Aviad Yehezkel <aviadye@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ilya Lesokhin
2018-04-30 10:16:10 +03:00
committed by David S. Miller
parent 1a1f4a28f3
commit 6dac152355
3 changed files with 35 additions and 0 deletions
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8
include/net/tcp.h
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@@ -2105,4 +2105,12 @@ static inline bool tcp_bpf_ca_needs_ecn(struct sock *sk)
#if IS_ENABLED(CONFIG_SMC)
extern struct static_key_false tcp_have_smc;
#endif
#if IS_ENABLED(CONFIG_TLS_DEVICE)
void clean_acked_data_enable(struct inet_connection_sock *icsk,
void (*cad)(struct sock *sk, u32 ack_seq));
void clean_acked_data_disable(struct inet_connection_sock *icsk);
#endif
#endif /* _TCP_H */