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TCPCT part 1a: add request_values parameter for sending SYNACK

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Add optional function parameters associated with sending SYNACK.
These parameters are not needed after sending SYNACK, and are not
used for retransmission.  Avoids extending struct tcp_request_sock,
and avoids allocating kernel memory.

Also affects DCCP as it uses common struct request_sock_ops,
but this parameter is currently reserved for future use.

Signed-off-by: William.Allen.Simpson@gmail.com
Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
William Allen Simpson
2009-12-02 18:07:39 +00:00
committed by David S. Miller
parent e00484023e
commit e6b4d11367
10 changed files with 42 additions and 33 deletions
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3
net/ipv4/tcp_output.c
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@@ -2224,7 +2224,8 @@ int tcp_send_synack(struct sock *sk)
/* Prepare a SYN-ACK. */
struct sk_buff *tcp_make_synack(struct sock *sk, struct dst_entry *dst,
struct request_sock *req)
struct request_sock *req,
struct request_values *rvp)
{
struct inet_request_sock *ireq = inet_rsk(req);
struct tcp_sock *tp = tcp_sk(sk);