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Commit 6b251858 authored by David S. Miller's avatar David S. Miller
Browse files

[TCP]: Fix init_cwnd calculations in tcp_select_initial_window() 



Match it up to what RFC2414 really specifies.
Noticed by Rick Jones.

Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 64233bff

net/ipv4/tcp_output.c

+6 −5
Original line number Diff line number Diff line
@@ -190,15 +190,16 @@ void tcp_select_initial_window(int __space, __u32 mss, 
	}



	/* Set initial window to value enough for senders,

	 * following RFC1414. Senders, not following this RFC,

	 * following RFC2414. Senders, not following this RFC,

	 * will be satisfied with 2.

	 */

	if (mss > (1<<*rcv_wscale)) {

		int init_cwnd = 4;

		if (mss > 1460*3)

		int init_cwnd;



		if (mss > 1460)

			init_cwnd = 2;

		else if (mss > 1460)

			init_cwnd = 3;

		else

			init_cwnd = (mss > 1095) ? 3 : 4;

		if (*rcv_wnd > init_cwnd*mss)

			*rcv_wnd = init_cwnd*mss;

	}