fixup! fixup! fixup! Adds DTLS 1.3 ACK message functionality

doc/designs/dtlsv1_3/dtlsv1_3-main.md

@@ -70,6 +70,7 @@ section 5.9.
 ACK's are sent for KeyUpdates, NewSessionTicket and Finish (client).
 
 Notes on RFC9147 Section 7.1:
+
 * The implementation does not offer any logic to determine that there is disruption
 when receiving messages which means it will not send ACKs for the example given
 in RFC9147 Figure 12.

ssl/pqueue.c

@@ -32,18 +32,13 @@ pitem *pitem_new(unsigned char *prio64be, void *data)
 pitem *pitem_new_ex(uint64_t prio64be, void *data)
 {
     pitem *item = OPENSSL_malloc(sizeof(*item));
+    unsigned char *p_item_prio;
 
     if (item == NULL)
         return NULL;
 
-    item->priority[0] = prio64be >> 56;
-    item->priority[1] = prio64be >> 48;
-    item->priority[2] = prio64be >> 40;
-    item->priority[3] = prio64be >> 32;
-    item->priority[4] = prio64be >> 24;
-    item->priority[5] = prio64be >> 16;
-    item->priority[6] = prio64be >> 8;
-    item->priority[7] = prio64be;
+    p_item_prio = item->priority;
+    l2n8(prio64be, p_item_prio);
     item->data = data;
     item->next = NULL;
 
@@ -144,16 +139,9 @@ pitem *pqueue_find(pqueue *pq, unsigned char *prio64be)
 }
 
 pitem *pqueue_find_ex(pqueue *pq, uint64_t prio64be) {
-    unsigned char prio[8];
-
-    prio[7] = prio64be;
-    prio[6] = prio64be >> 8;
-    prio[5] = prio64be >> 16;
-    prio[4] = prio64be >> 24;
-    prio[3] = prio64be >> 32;
-    prio[2] = prio64be >> 40;
-    prio[1] = prio64be >> 48;
-    prio[0] = prio64be >> 56;
+    unsigned char prio[8], *p_prio = prio;
+
+    l2n8(prio64be, p_prio);
 
     return pqueue_find(pq, prio);
 }

ssl/record/methods/ssl3_meth.c

@@ -250,7 +250,7 @@ static int ssl3_mac(OSSL_RECORD_LAYER *rl, TLS_RL_RECORD *rec, unsigned char *md
             || !WPACKET_memcpy(&hdr, rl->mac_secret, md_size)
             || !WPACKET_memcpy(&hdr, ssl3_pad_1, npad)
             || !WPACKET_put_bytes_u64(&hdr, rl->sequence)
-            || (!cbc_encrypted && !WPACKET_put_bytes_u8(&hdr, rec->type))
+            || !WPACKET_put_bytes_u8(&hdr, rec->type)
             || !WPACKET_put_bytes_u16(&hdr, rec->length)
             || !WPACKET_finish(&hdr)
             || !WPACKET_get_total_written(&hdr, &hdr_written))