2 files changed, 6 insertions, 18 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)
         struct ccid3_hc_tx_sock *hctx = ccid3_hc_tx_sk(sk);
         const __u32 old_x = hctx->ccid3hctx_x;
 
-        /* To avoid large error in calcX */
-        if (hctx->ccid3hctx_p >= TFRC_SMALLEST_P) {
+        if (hctx->ccid3hctx_p > 0) {
                 hctx->ccid3hctx_x_calc = tfrc_calc_x(hctx->ccid3hctx_s,
                                                      hctx->ccid3hctx_rtt,
                                                      hctx->ccid3hctx_p);
@@ -226,16 +225,14 @@ static void ccid3_hc_tx_no_feedback_timer(unsigned long data)
                                        ccid3_tx_state_name(hctx->ccid3hctx_state));
                         /* Halve sending rate */
 
-                        /*  If (X_calc > 2 * X_recv)
+                        /*  If (p == 0 || X_calc > 2 * X_recv)
                          *    X_recv = max(X_recv / 2, s / (2 * t_mbi));
                          *  Else
                          *    X_recv = X_calc / 4;
                          */
-                        BUG_ON(hctx->ccid3hctx_p >= TFRC_SMALLEST_P &&
-                               hctx->ccid3hctx_x_calc == 0);
+                        BUG_ON(hctx->ccid3hctx_p && !hctx->ccid3hctx_x_calc);
 
-                        /* check also if p is zero -> x_calc is infinity? */
-                        if (hctx->ccid3hctx_p < TFRC_SMALLEST_P ||
+                        if (hctx->ccid3hctx_p  == 0 ||
                             hctx->ccid3hctx_x_calc > 2 * hctx->ccid3hctx_x_recv)
                                 hctx->ccid3hctx_x_recv = max_t(u32, hctx->ccid3hctx_x_recv / 2,
                                                                     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)
                 pinv = opt_recv->ccid3or_loss_event_rate;
                 if (pinv == ~0U || pinv == 0)
                         hctx->ccid3hctx_p = 0;
-                else {
-                        hctx->ccid3hctx_p = 1000000 / pinv;
-
-                        if (hctx->ccid3hctx_p < TFRC_SMALLEST_P) {
-                                hctx->ccid3hctx_p = TFRC_SMALLEST_P;
-                                ccid3_pr_debug("%s, sk=%p, Smallest p used!\n",
-                                               dccp_role(sk), sk);
-                        }
-                }
+                else
+                        hctx->ccid3hctx_p = 1000000 / pinv;
 
                 dccp_timestamp(sk, &now);
 
diff --git a/net/dccp/ccids/ccid3.h b/net/dccp/ccids/ccid3.h
index 27cb20ae1da8..07596d704ef9 100644
--- a/net/dccp/ccids/ccid3.h
+++ b/net/dccp/ccids/ccid3.h
@@ -51,8 +51,6 @@
 /* Parameter t_mbi from [RFC 3448, 4.3]: backoff interval in seconds */
 #define TFRC_T_MBI                 64
 
-#define TFRC_SMALLEST_P            40
-
 enum ccid3_options {
         TFRC_OPT_LOSS_EVENT_RATE = 192,
         TFRC_OPT_LOSS_INTERVALS  = 193,