stream: add seq min and max; use in segment compare

src/stream-tcp-inline.c

@@ -85,10 +85,10 @@ int StreamTcpInlineSegmentCompare(const TcpStream *stream,
         SCLogDebug("pkt_end %u, seg_end %u", pkt_end, seg_end);
 
         /* get the minimal seg*_end */
-        uint32_t end = (SEQ_GT(pkt_end, seg_end)) ? seg_end : pkt_end;
+        uint32_t end = SEQ_MIN(seg_end, pkt_end);
         /* and the max seq */
-        uint32_t seq = (SEQ_LT(pkt_seq, seg_seq)) ? seg->seq : pkt_seq;
-        seq = (SEQ_GT(seq, stream->base_seq)) ? seq : stream->base_seq;
+        uint32_t seq = SEQ_MAX(pkt_seq, seg_seq);
+        seq = SEQ_MAX(seq, stream->base_seq);
         SCLogDebug("seq %u, end %u", seq, end);
 
         uint32_t pkt_off = seq - pkt_seq;

src/stream-tcp-private.h

@@ -254,6 +254,8 @@ enum TcpState {
 #define SEQ_LEQ(a,b) ((int32_t)((a) - (b)) <= 0)
 #define SEQ_GT(a,b)  ((int32_t)((a) - (b)) >  0)
 #define SEQ_GEQ(a,b) ((int32_t)((a) - (b)) >= 0)
+#define SEQ_MIN(a, b) (SEQ_LT((a), (b)) ? (a) : (b))
+#define SEQ_MAX(a, b) (SEQ_GT((a), (b)) ? (a) : (b))
 
 #define STREAMTCP_SET_RA_BASE_SEQ(stream, seq) { \
     do { \