Gitweb: http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=26722873a460703e319462afa7ebb8ed3a036c07 Commit: 26722873a460703e319462afa7ebb8ed3a036c07 Parent: a96fb49be3dd2031f722bf32af6ed7db965b60f7 Author: David S. Miller <[EMAIL PROTECTED]> AuthorDate: Fri Aug 24 22:21:50 2007 -0700 Committer: David S. Miller <[EMAIL PROTECTED]> CommitDate: Sun Aug 26 18:35:36 2007 -0700
[TCP]: Describe tcp_init_cwnd() thoroughly in a comment. People often get tripped up by this function and think that it does not implemented the prescribed algorithms from RFC2414 and RFC3390, even though it does. So add a comment to head off such misunderstandings in the future. Signed-off-by: David S. Miller <[EMAIL PROTECTED]> --- net/ipv4/tcp_input.c | 10 +++++++++- 1 files changed, 9 insertions(+), 1 deletions(-) diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c index f030435..9785df3 100644 --- a/net/ipv4/tcp_input.c +++ b/net/ipv4/tcp_input.c @@ -755,7 +755,15 @@ void tcp_update_metrics(struct sock *sk) } } -/* Numbers are taken from RFC2414. */ +/* Numbers are taken from RFC3390. + * + * John Heffner states: + * + * The RFC specifies a window of no more than 4380 bytes + * unless 2*MSS > 4380. Reading the pseudocode in the RFC + * is a bit misleading because they use a clamp at 4380 bytes + * rather than use a multiplier in the relevant range. + */ __u32 tcp_init_cwnd(struct tcp_sock *tp, struct dst_entry *dst) { __u32 cwnd = (dst ? dst_metric(dst, RTAX_INITCWND) : 0); - To unsubscribe from this list: send the line "unsubscribe git-commits-head" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html