[CCID-4] Set packet size to 1460 as per ccid-4 draft
Signed-off-by: Leandro Melo de Sales <leandro@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Tommi Saviranta <wnd@xxxxxx>
Index: leandro.new/net/dccp/ccids/ccid4.c
===================================================================
--- leandro.new.orig/net/dccp/ccids/ccid4.c
+++ leandro.new/net/dccp/ccids/ccid4.c
@@ -472,9 +472,9 @@ static void ccid4_hc_tx_packet_recv(stru
goto done_computing_x;
}
}
- /* perform step (4) of draft rfc3448bis, section 4.3 */
+ /* Update sending rate (step 4 of [RFC 3448, 4.3]) */
if (hctx->ccid4hctx_p > 0)
- hctx->ccid4hctx_x_calc = tfrc_calc_x(hctx->ccid4hctx_s,
+ hctx->ccid4hctx_x_calc = tfrc_calc_x(NOM_PACKET_SIZE,
hctx->ccid4hctx_rtt,
hctx->ccid4hctx_p);
ccid4_hc_tx_update_x(sk, &now);
@@ -775,7 +775,7 @@ static u32 ccid4_first_li(struct sock *s
}
}
- fval = scaled_div(hcrx->ccid4hcrx_s, hcrx->ccid4hcrx_rtt);
+ fval = scaled_div(NOM_PACKET_SIZE, hcrx->ccid4hcrx_rtt);
fval = scaled_div32(fval, x_recv);
p = tfrc_calc_x_reverse_lookup(fval);
Index: leandro.new/net/dccp/ccids/ccid4.h
===================================================================
--- leandro.new.orig/net/dccp/ccids/ccid4.h
+++ leandro.new/net/dccp/ccids/ccid4.h
@@ -65,6 +65,9 @@
/* Parameter t_mbi from [RFC 3448, 4.3]: backoff interval in seconds */
#define TFRC_T_MBI 64
+/* The nominal packet size to be used into TFRC equation as per CCID-4 draft*/
+#define NOM_PACKET_SIZE 1460
+
enum ccid4_options {
TFRC_OPT_LOSS_EVENT_RATE = 192,
TFRC_OPT_LOSS_INTERVALS = 193,
-
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