diff options
Diffstat (limited to 'net/dccp/ccids/ccid3.c')
| -rw-r--r-- | net/dccp/ccids/ccid3.c | 38 |
1 files changed, 8 insertions, 30 deletions
diff --git a/net/dccp/ccids/ccid3.c b/net/dccp/ccids/ccid3.c index 50dac01..8744590 100644 --- a/net/dccp/ccids/ccid3.c +++ b/net/dccp/ccids/ccid3.c @@ -590,12 +590,9 @@ static void ccid3_hc_rx_send_feedback(struct sock *sk, * would bring X down to s/t_mbi. That is why we return * X_recv according to rfc3448bis-06 for the moment. */ - u32 rtt = hcrx->rtt ? : DCCP_FALLBACK_RTT, s = hcrx->s; + u32 rtt = hcrx->rtt ? : DCCP_FALLBACK_RTT, + s = tfrc_rx_hist_packet_size(&hcrx->hist); - if (s == 0) { - DCCP_WARN("No sample for s, using fallback\n"); - s = TCP_MIN_RCVMSS; - } hcrx->x_recv = scaled_div32(s, 2 * rtt); break; } @@ -617,7 +614,7 @@ static void ccid3_hc_rx_send_feedback(struct sock *sk, if (delta <= 0) DCCP_BUG("delta (%ld) <= 0", (long)delta); else - hcrx->x_recv = scaled_div32(hcrx->bytes_recv, delta); + hcrx->x_recv = scaled_div32(hcrx->hist.bytes_recvd, delta); break; default: return; @@ -628,7 +625,7 @@ static void ccid3_hc_rx_send_feedback(struct sock *sk, hcrx->tstamp_last_feedback = now; hcrx->last_counter = dccp_hdr(skb)->dccph_ccval; - hcrx->bytes_recv = 0; + hcrx->hist.bytes_recvd = 0; dp->dccps_hc_rx_insert_options = 1; dccp_send_ack(sk); @@ -669,7 +666,8 @@ static int ccid3_hc_rx_insert_options(struct sock *sk, struct sk_buff *skb) static u32 ccid3_first_li(struct sock *sk) { struct ccid3_hc_rx_sock *hcrx = ccid3_hc_rx_sk(sk); - u32 x_recv, p, delta; + u32 x_recv, p, delta, + s = tfrc_rx_hist_packet_size(&hcrx->hist); u64 fval; /* @@ -686,7 +684,7 @@ static u32 ccid3_first_li(struct sock *sk) } delta = ktime_to_us(net_timedelta(hcrx->tstamp_last_feedback)); - x_recv = scaled_div32(hcrx->bytes_recv, delta); + x_recv = scaled_div32(hcrx->hist.bytes_recvd, delta); if (x_recv == 0) { /* would also trigger divide-by-zero */ DCCP_WARN("X_recv==0\n"); if (hcrx->x_recv == 0) { @@ -696,8 +694,7 @@ static u32 ccid3_first_li(struct sock *sk) x_recv = hcrx->x_recv; } - fval = scaled_div(hcrx->s, hcrx->rtt); - fval = scaled_div32(fval, x_recv); + fval = scaled_div32(scaled_div(s, hcrx->rtt), x_recv); p = tfrc_calc_x_reverse_lookup(fval); ccid3_pr_debug("%s(%p), receive rate=%u bytes/s, implied " @@ -724,31 +721,12 @@ static void ccid3_hc_rx_packet_recv(struct sock *sk, struct sk_buff *skb) if (unlikely(hcrx->state == TFRC_RSTATE_NO_DATA)) { if (is_data_packet) { - const u32 payload = skb->len - dccp_hdr(skb)->dccph_doff * 4; do_feedback = CCID3_FBACK_INITIAL; ccid3_hc_rx_set_state(sk, TFRC_RSTATE_DATA); - hcrx->s = payload; - /* - * Not necessary to update bytes_recv here, - * since X_recv = 0 for the first feedback packet (cf. - * RFC 3448, 6.3) -- gerrit - */ } goto update_records; } - if (tfrc_rx_hist_duplicate(&hcrx->hist, skb)) - return; /* done receiving */ - - if (is_data_packet) { - const u32 payload = skb->len - dccp_hdr(skb)->dccph_doff * 4; - /* - * Update moving-average of s and the sum of received payload bytes - */ - hcrx->s = tfrc_ewma(hcrx->s, payload, 9); - hcrx->bytes_recv += payload; - } - if (tfrc_rx_hist_loss_pending(&hcrx->hist)) return; /* done receiving */ |
