Index: uspace/lib/c/include/bitops.h
===================================================================
--- uspace/lib/c/include/bitops.h	(revision 28f8f1707abf5bd47a47210ade9902a498f8a797)
+++ uspace/lib/c/include/bitops.h	(revision bbf159a20a99023b10c2a8bcff9b59156f1a59eb)
@@ -40,9 +40,9 @@
 /** Mask with bit @a n set. */
 #define BIT_V(type, n) \
-    ((type)1 << ((n) - 1))
+    ((type)1 << (n))
 
 /** Mask with rightmost @a n bits set. */
 #define BIT_RRANGE(type, n) \
-    (BIT_V(type, (n) + 1) - 1)
+    (BIT_V(type, (n)) - 1)
 
 /** Mask with bits @a hi .. @a lo set. @a hi >= @a lo. */
Index: uspace/lib/c/include/errno.h
===================================================================
--- uspace/lib/c/include/errno.h	(revision 28f8f1707abf5bd47a47210ade9902a498f8a797)
+++ uspace/lib/c/include/errno.h	(revision bbf159a20a99023b10c2a8bcff9b59156f1a59eb)
@@ -96,4 +96,8 @@
 #define ENOTCONN  (-10057)
 
+#define ECONNREFUSED  (-10058)
+
+#define ECONNABORTED  (-10059)
+
 /** The requested operation was not performed. Try again later. */
 #define EAGAIN  (-11002)
Index: uspace/lib/c/include/fibril_synch.h
===================================================================
--- uspace/lib/c/include/fibril_synch.h	(revision 28f8f1707abf5bd47a47210ade9902a498f8a797)
+++ uspace/lib/c/include/fibril_synch.h	(revision bbf159a20a99023b10c2a8bcff9b59156f1a59eb)
@@ -107,4 +107,35 @@
 	fibril_condvar_t name = FIBRIL_CONDVAR_INITIALIZER(name)
 
+typedef void (*fibril_timer_fun_t)(void *);
+
+typedef enum {
+	/** Timer has not been set or has been cleared */
+	fts_not_set,
+	/** Timer was set but did not fire yet */
+	fts_active,
+	/** Timer has fired and has not been cleared since */
+	fts_fired,
+	/** Timer is being destroyed */
+	fts_cleanup
+} fibril_timer_state_t;
+
+/** Fibril timer.
+ *
+ * When a timer is set it executes a callback function (in a separate
+ * fibril) after a specified time interval. The timer can be cleared
+ * (canceled) before that. From the return value of fibril_timer_clear()
+ * one can tell whether the timer fired or not.
+ */
+typedef struct {
+	fibril_mutex_t lock;
+	fibril_condvar_t cv;
+	fid_t fibril;
+	fibril_timer_state_t state;
+
+	suseconds_t delay;
+	fibril_timer_fun_t fun;
+	void *arg;
+} fibril_timer_t;
+
 extern void fibril_mutex_initialize(fibril_mutex_t *);
 extern void fibril_mutex_lock(fibril_mutex_t *);
@@ -129,4 +160,10 @@
 extern void fibril_condvar_broadcast(fibril_condvar_t *);
 
+extern fibril_timer_t *fibril_timer_create(void);
+extern void fibril_timer_destroy(fibril_timer_t *);
+extern void fibril_timer_set(fibril_timer_t *, suseconds_t, fibril_timer_fun_t,
+    void *);
+extern fibril_timer_state_t fibril_timer_clear(fibril_timer_t *);
+
 #endif