Signed-off-by: Leandro Sales <leandro@xxxxxxxxxxxxxxxxxxxx>
It replaces the hard-coded 1460 nominal packet size by a #define in the
ccid4.h and adjust the ccid4.c for the applied changes.
diff -uprN dccp-ccid4.base/net/dccp/ccids/ccid4.c
dccp-ccid4/net/dccp/ccids/ccid4.c
--- dccp-ccid4.base/net/dccp/ccids/ccid4.c 2007-09-20 14:19:54.000000000 -0300
+++ dccp-ccid4/net/dccp/ccids/ccid4.c 2007-09-20 14:17:41.000000000 -0300
@@ -493,7 +493,7 @@ 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(1460,
+ hctx->ccid4hctx_x_calc = tfrc_calc_x(NOM_PACKET_SIZE,
hctx->ccid4hctx_rtt,
hctx->ccid4hctx_p);
ccid4_hc_tx_update_x(sk, &now);
@@ -804,7 +804,7 @@ static u32 ccid4_first_li(struct sock *s
}
}
- fval = scaled_div(1460, 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);
diff -uprN dccp-ccid4.base/net/dccp/ccids/ccid4.h
dccp-ccid4/net/dccp/ccids/ccid4.h
--- dccp-ccid4.base/net/dccp/ccids/ccid4.h 2007-09-20 14:19:54.000000000 -0300
+++ dccp-ccid4/net/dccp/ccids/ccid4.h 2007-09-20 14:16:59.000000000 -0300
@@ -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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