diff options
Diffstat (limited to 'net/dccp/ccids/ccid3.c')
-rw-r--r-- | net/dccp/ccids/ccid3.c | 22 |
1 files changed, 6 insertions, 16 deletions
diff --git a/net/dccp/ccids/ccid3.c b/net/dccp/ccids/ccid3.c index 721efc7ed319..cf8c07b2704f 100644 --- a/net/dccp/ccids/ccid3.c +++ b/net/dccp/ccids/ccid3.c | |||
@@ -137,8 +137,7 @@ static void ccid3_hc_tx_update_x(struct sock *sk, struct timeval *now) | |||
137 | struct ccid3_hc_tx_sock *hctx = ccid3_hc_tx_sk(sk); | 137 | struct ccid3_hc_tx_sock *hctx = ccid3_hc_tx_sk(sk); |
138 | const __u32 old_x = hctx->ccid3hctx_x; | 138 | const __u32 old_x = hctx->ccid3hctx_x; |
139 | 139 | ||
140 | /* To avoid large error in calcX */ | 140 | if (hctx->ccid3hctx_p > 0) { |
141 | if (hctx->ccid3hctx_p >= TFRC_SMALLEST_P) { | ||
142 | hctx->ccid3hctx_x_calc = tfrc_calc_x(hctx->ccid3hctx_s, | 141 | hctx->ccid3hctx_x_calc = tfrc_calc_x(hctx->ccid3hctx_s, |
143 | hctx->ccid3hctx_rtt, | 142 | hctx->ccid3hctx_rtt, |
144 | hctx->ccid3hctx_p); | 143 | hctx->ccid3hctx_p); |
@@ -226,16 +225,14 @@ static void ccid3_hc_tx_no_feedback_timer(unsigned long data) | |||
226 | ccid3_tx_state_name(hctx->ccid3hctx_state)); | 225 | ccid3_tx_state_name(hctx->ccid3hctx_state)); |
227 | /* Halve sending rate */ | 226 | /* Halve sending rate */ |
228 | 227 | ||
229 | /* If (X_calc > 2 * X_recv) | 228 | /* If (p == 0 || X_calc > 2 * X_recv) |
230 | * X_recv = max(X_recv / 2, s / (2 * t_mbi)); | 229 | * X_recv = max(X_recv / 2, s / (2 * t_mbi)); |
231 | * Else | 230 | * Else |
232 | * X_recv = X_calc / 4; | 231 | * X_recv = X_calc / 4; |
233 | */ | 232 | */ |
234 | BUG_ON(hctx->ccid3hctx_p >= TFRC_SMALLEST_P && | 233 | BUG_ON(hctx->ccid3hctx_p && !hctx->ccid3hctx_x_calc); |
235 | hctx->ccid3hctx_x_calc == 0); | ||
236 | 234 | ||
237 | /* check also if p is zero -> x_calc is infinity? */ | 235 | if (hctx->ccid3hctx_p == 0 || |
238 | if (hctx->ccid3hctx_p < TFRC_SMALLEST_P || | ||
239 | hctx->ccid3hctx_x_calc > 2 * hctx->ccid3hctx_x_recv) | 236 | hctx->ccid3hctx_x_calc > 2 * hctx->ccid3hctx_x_recv) |
240 | hctx->ccid3hctx_x_recv = max_t(u32, hctx->ccid3hctx_x_recv / 2, | 237 | hctx->ccid3hctx_x_recv = max_t(u32, hctx->ccid3hctx_x_recv / 2, |
241 | hctx->ccid3hctx_s / (2 * TFRC_T_MBI)); | 238 | hctx->ccid3hctx_s / (2 * TFRC_T_MBI)); |
@@ -449,15 +446,8 @@ static void ccid3_hc_tx_packet_recv(struct sock *sk, struct sk_buff *skb) | |||
449 | pinv = opt_recv->ccid3or_loss_event_rate; | 446 | pinv = opt_recv->ccid3or_loss_event_rate; |
450 | if (pinv == ~0U || pinv == 0) | 447 | if (pinv == ~0U || pinv == 0) |
451 | hctx->ccid3hctx_p = 0; | 448 | hctx->ccid3hctx_p = 0; |
452 | else { | 449 | else |
453 | hctx->ccid3hctx_p = 1000000 / pinv; | 450 | hctx->ccid3hctx_p = 1000000 / pinv; |
454 | |||
455 | if (hctx->ccid3hctx_p < TFRC_SMALLEST_P) { | ||
456 | hctx->ccid3hctx_p = TFRC_SMALLEST_P; | ||
457 | ccid3_pr_debug("%s, sk=%p, Smallest p used!\n", | ||
458 | dccp_role(sk), sk); | ||
459 | } | ||
460 | } | ||
461 | 451 | ||
462 | dccp_timestamp(sk, &now); | 452 | dccp_timestamp(sk, &now); |
463 | 453 | ||