From: Christian Grothoff <christian@grothoff.org>
Date: Mon, 1 Aug 2011 18:31:12 +0000 (+0000)
Subject: fix
X-Git-Tag: initial-import-from-subversion-38251~17562
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=7824120f64433bee7048d983a7d5fc2ff91d1d14;p=oweals%2Fgnunet.git

fix
---

diff --git a/src/fragmentation/fragmentation.c b/src/fragmentation/fragmentation.c
index e97b0f763..81db1b831 100644
--- a/src/fragmentation/fragmentation.c
+++ b/src/fragmentation/fragmentation.c
@@ -78,6 +78,12 @@ struct GNUNET_FRAGMENT_Context
    */
   uint64_t acks;
 
+  /**
+   * Bitfield with all possible bits for 'acks' (used to mask the
+   * ack we get back).
+   */
+  uint64_t acks_mask;
+
   /**
    * Task performing work for the fragmenter.
    */
@@ -268,9 +274,10 @@ GNUNET_FRAGMENT_context_create (struct GNUNET_STATISTICS_Handle *stats,
   bits = (size + mtu - sizeof (struct FragmentHeader) - 1) / (mtu - sizeof (struct FragmentHeader));
   GNUNET_assert (bits <= 64);
   if (bits == 64)
-    fc->acks = UINT64_MAX;      /* set all 64 bit */
+    fc->acks_mask = UINT64_MAX;      /* set all 64 bit */
   else
-    fc->acks = (1LL << bits) - 1; /* set lowest 'bits' bit */
+    fc->acks_mask = (1LL << bits) - 1; /* set lowest 'bits' bit */
+  fc->acks = fc->acks_mask;
   fc->task = GNUNET_SCHEDULER_add_now (&transmit_next,
 				       fc);
   return fc;
@@ -343,7 +350,7 @@ GNUNET_FRAGMENT_process_ack (struct GNUNET_FRAGMENT_Context *fc,
 				_("# bits removed from fragmentation ACKs"),
 				1, GNUNET_NO);
     }
-  fc->acks = abits;
+  fc->acks = abits & fc->acks_mask;
   if (0 != fc->acks)
     {
       /* more to transmit, do so right now (if tracker permits...) */