2007/9/20, Tommi Saviranta <wnd@xxxxxx>: > Uses hard-coded value of 1460 bytes in TCP throughput calculation. > > Signed-off-by: Tommi Saviranta <wnd@xxxxxx> > > --- > diff -Nrup a/net/dccp/ccids/ccid4.c b/net/dccp/ccids/ccid4.c > --- a/net/dccp/ccids/ccid4.c 2007-09-20 13:32:42.000000000 +0300 > +++ b/net/dccp/ccids/ccid4.c 2007-09-20 14:02:43.000000000 +0300 > @@ -459,7 +459,7 @@ static void ccid4_hc_tx_packet_recv(stru > } > /* perform step (4) of draft rfc3448bis, section 4.3 */ > if (hctx->ccid4hctx_p > 0) > - hctx->ccid4hctx_x_calc = tfrc_calc_x(hctx->ccid4hctx_s, > + hctx->ccid4hctx_x_calc = tfrc_calc_x(1460, > hctx->ccid4hctx_rtt, > hctx->ccid4hctx_p); > ccid4_hc_tx_update_x(sk, &now); > @@ -740,7 +740,7 @@ static int ccid4_hc_rx_insert_options(st > return 0; > } > > -/** ccid4_first_li - Implements [RFC 3448, 6.3.1] > +/** ccid4_first_li - Implements [RFC 3448, 6.3.1], with s = 1460 [TFRC-SP] > * > * Determine the length of the first loss interval via inverse lookup. > * Assume that X_recv can be computed by the throughput equation > @@ -770,7 +770,7 @@ static u32 ccid4_first_li(struct sock *s > } > } > > - fval = scaled_div(hcrx->ccid4hcrx_s, hcrx->ccid4hcrx_rtt); > + fval = scaled_div(1460, hcrx->ccid4hcrx_rtt); > fval = scaled_div32(fval, x_recv); > p = tfrc_calc_x_reverse_lookup(fval); > - > To unsubscribe from this list: send the line "unsubscribe dccp" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > Acked-by: Leandro Sales <leandro@xxxxxxxxxxxxxxxxxxxx> - To unsubscribe from this list: send the line "unsubscribe dccp" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
