On Fri, Mar 18, 2011 at 6:06 PM, Gerrit Renker <gerrit@xxxxxxxxxxxxxx> wrote:
>
> There was a discussion earlier with Leandro to keep the current status of
> using RFC 3390 initial window settings, so I am updating accordingly.
>
> Ultimately it would be great to consider larger initial windows also for
> CCID-2, perhaps as a configurable compilation option. With 1GB/10GB ethernet,
> this would make a conceivable difference.
>
> >>>>>>>>>>>>>>>>>>>>>>>>>>>> Patch <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
> dccp ccid-2: move rfc 3390 function into header file
>
> This moves the initial-window function, which came back when TCP's window
> was increased, into the header file. Several patches in the test tree
> rely on this function. Until there is agreement to put larger windows
> also into CCID-2, the function needs to be available in a top-level place.
>
> Signed-off-by: Gerrit Renker <gerrit@xxxxxxxxxxxxxx>
> ---
> net/dccp/ccids/ccid2.c | 9 ---------
> net/dccp/ccids/ccid2.h | 9 +++++++++
> 2 files changed, 9 insertions(+), 9 deletions(-)
>
> --- a/net/dccp/ccids/ccid2.c
> +++ b/net/dccp/ccids/ccid2.c
> @@ -583,15 +583,6 @@ done:
> dccp_ackvec_parsed_cleanup(&hc->tx_av_chunks);
> }
>
> -/*
> - * Convert RFC 3390 larger initial window into an equivalent number of packets.
> - * This is based on the numbers specified in RFC 5681, 3.1.
> - */
> -static inline u32 rfc3390_bytes_to_packets(const u32 smss)
> -{
> - return smss <= 1095 ? 4 : (smss > 2190 ? 2 : 3);
> -}
> -
> static int ccid2_hc_tx_init(struct ccid *ccid, struct sock *sk)
> {
> struct ccid2_hc_tx_sock *hc = ccid_priv(ccid);
> --- a/net/dccp/ccids/ccid2.h
> +++ b/net/dccp/ccids/ccid2.h
> @@ -88,6 +88,15 @@ static inline bool ccid2_cwnd_network_li
> return hc->tx_pipe >= hc->tx_cwnd;
> }
>
> +/*
> + * Convert RFC 3390 larger initial window into an equivalent number of packets.
> + * This is based on the numbers specified in RFC 5681, 3.1.
> + */
> +static inline u32 rfc3390_bytes_to_packets(const u32 smss)
> +{
> + return smss <= 1095 ? 4 : (smss > 2190 ? 2 : 3);
> +}
> +
> struct ccid2_hc_rx_sock {
> int rx_data;
> };
>
> --
> --
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Acked-by: Leandro Melo de Sales <leandro@xxxxxxxxxx>
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