Sequence Numbers: Introduce GET_MASKED_SN macro

src/ens/sequencenumber.c

@@ -1,13 +1,9 @@
 #include "sequencenumber.h"
 
-record_sequence_number_t sn_mask(record_sequence_number_t sn) {
-    return (sn & SN_MASK);
-}
-
 int sn_equal(record_sequence_number_t a, record_sequence_number_t b) {
-    return sn_mask(a) == sn_mask(b);
+    return GET_MASKED_SN(a) == GET_MASKED_SN(b);
 }
 
 record_sequence_number_t sn_increment(record_sequence_number_t sn) {
-    return sn_mask(++sn);
+    return GET_MASKED_SN(++sn);
 }

src/ens/sequencenumber.h

@@ -6,16 +6,12 @@
 // mask for sequence numbers (2^24 - 1)
 #define SN_MASK 16777215
 
-typedef uint32_t record_sequence_number_t;
-
 /**
  * Mask a given sequence number to get rid of MSB.
- * TODO: maybe as #define?
- *
- * @param sn sequence number to mask
- * @return masked sequence number
  */
-record_sequence_number_t sn_mask(record_sequence_number_t sn);
+#define GET_MASKED_SN(x) (x & SN_MASK)
+
+typedef uint32_t record_sequence_number_t;
 
 /**
  * Compare to sequence numbers for equality.

src/ens/storage.c

@@ -163,7 +163,7 @@ int delete_contact(record_sequence_number_t sn) {
 
 // TODO lome: do we need lock here aswell?
 record_sequence_number_t get_latest_sequence_number() {
-    return sn_mask(contact_information.oldest_contact + contact_information.count);
+    return GET_MASKED_SN((contact_information.oldest_contact + contact_information.count));
 }
 
 record_sequence_number_t get_oldest_sequence_number() {