diff options
| -rw-r--r-- | net/dccp/ccids/ccid3.c | 42 | ||||
| -rw-r--r-- | net/dccp/ccids/ccid3.h | 10 |
2 files changed, 11 insertions, 41 deletions
diff --git a/net/dccp/ccids/ccid3.c b/net/dccp/ccids/ccid3.c index 35123c1..f4097dd 100644 --- a/net/dccp/ccids/ccid3.c +++ b/net/dccp/ccids/ccid3.c @@ -414,8 +414,7 @@ static void ccid3_hc_tx_packet_recv(struct sock *sk, struct sk_buff *skb) struct dccp_tx_hist_entry *packet; struct timeval now; unsigned long t_nfb; - u32 pinv; - suseconds_t r_sample, t_elapsed; + u32 pinv, r_sample; BUG_ON(hctx == NULL); @@ -457,18 +456,10 @@ static void ccid3_hc_tx_packet_recv(struct sock *sk, struct sk_buff *skb) * Calculate new round trip sample as per [RFC 3448, 4.3] by * R_sample = (now - t_recvdata) - t_elapsed */ - r_sample = timeval_delta(&now, &packet->dccphtx_tstamp); - t_elapsed = dp->dccps_options_received.dccpor_elapsed_time * 10; + r_sample = dccp_sample_rtt(sk, &now, &packet->dccphtx_tstamp); - DCCP_BUG_ON(r_sample < 0); - if (unlikely(r_sample <= t_elapsed)) - DCCP_WARN("WARNING: r_sample=%dus <= t_elapsed=%dus\n", - (int)r_sample, (int)t_elapsed); - else - r_sample -= t_elapsed; - CCID3_RTT_SANITY_CHECK(r_sample); - - /* Update RTT estimate by + /* + * Update RTT estimate by * If (No feedback recv) * R = R_sample; * Else @@ -487,15 +478,15 @@ static void ccid3_hc_tx_packet_recv(struct sock *sk, struct sk_buff *skb) ccid3_update_send_interval(hctx); ccid3_pr_debug("%s(%p), s=%u, MSS=%u, " - "R_sample=%dus, X=%u\n", dccp_role(sk), + "R_sample=%uus, X=%u\n", dccp_role(sk), sk, hctx->ccid3hctx_s, - dp->dccps_mss_cache, (int)r_sample, + dp->dccps_mss_cache, r_sample, (unsigned)(hctx->ccid3hctx_x >> 6)); ccid3_hc_tx_set_state(sk, TFRC_SSTATE_FBACK); } else { hctx->ccid3hctx_rtt = (9 * hctx->ccid3hctx_rtt + - (u32)r_sample) / 10; + r_sample) / 10; /* Update sending rate (step 4 of [RFC 3448, 4.3]) */ if (hctx->ccid3hctx_p > 0) @@ -505,10 +496,10 @@ static void ccid3_hc_tx_packet_recv(struct sock *sk, struct sk_buff *skb) hctx->ccid3hctx_p); ccid3_hc_tx_update_x(sk, &now); - ccid3_pr_debug("%s(%p), RTT=%uus (sample=%dus), s=%u, " + ccid3_pr_debug("%s(%p), RTT=%uus (sample=%uus), s=%u, " "p=%u, X_calc=%u, X_recv=%u, X=%u\n", dccp_role(sk), - sk, hctx->ccid3hctx_rtt, (int)r_sample, + sk, hctx->ccid3hctx_rtt, r_sample, hctx->ccid3hctx_s, hctx->ccid3hctx_p, hctx->ccid3hctx_x_calc, (unsigned)(hctx->ccid3hctx_x_recv >> 6), @@ -1025,8 +1016,7 @@ static void ccid3_hc_rx_packet_recv(struct sock *sk, struct sk_buff *skb) const struct dccp_options_received *opt_recv; struct dccp_rx_hist_entry *packet; struct timeval now; - u32 p_prev, rtt_prev; - suseconds_t r_sample, t_elapsed; + u32 p_prev, r_sample, rtt_prev; int loss, payload_size; BUG_ON(hcrx == NULL); @@ -1042,17 +1032,7 @@ static void ccid3_hc_rx_packet_recv(struct sock *sk, struct sk_buff *skb) break; rtt_prev = hcrx->ccid3hcrx_rtt; dccp_timestamp(sk, &now); - timeval_sub_usecs(&now, opt_recv->dccpor_timestamp_echo * 10); - r_sample = timeval_usecs(&now); - t_elapsed = opt_recv->dccpor_elapsed_time * 10; - - DCCP_BUG_ON(r_sample < 0); - if (unlikely(r_sample <= t_elapsed)) - DCCP_WARN("r_sample=%ldus, t_elapsed=%ldus\n", - (long)r_sample, (long)t_elapsed); - else - r_sample -= t_elapsed; - CCID3_RTT_SANITY_CHECK(r_sample); + r_sample = dccp_sample_rtt(sk, &now, NULL); if (hcrx->ccid3hcrx_state == TFRC_RSTATE_NO_DATA) hcrx->ccid3hcrx_rtt = r_sample; diff --git a/net/dccp/ccids/ccid3.h b/net/dccp/ccids/ccid3.h index 15776a8..8d31b38 100644 --- a/net/dccp/ccids/ccid3.h +++ b/net/dccp/ccids/ccid3.h @@ -51,16 +51,6 @@ /* Parameter t_mbi from [RFC 3448, 4.3]: backoff interval in seconds */ #define TFRC_T_MBI 64 -/* What we think is a reasonable upper limit on RTT values */ -#define CCID3_SANE_RTT_MAX ((suseconds_t)(4 * USEC_PER_SEC)) - -#define CCID3_RTT_SANITY_CHECK(rtt) do { \ - if (rtt > CCID3_SANE_RTT_MAX) { \ - DCCP_CRIT("RTT (%d) too large, substituting %d", \ - (int)rtt, (int)CCID3_SANE_RTT_MAX); \ - rtt = CCID3_SANE_RTT_MAX; \ - } } while (0) - enum ccid3_options { TFRC_OPT_LOSS_EVENT_RATE = 192, TFRC_OPT_LOSS_INTERVALS = 193, |
