slirp: remove remaining DEBUG blocks

Instead, rely on slirp_debug flags, or compile unconditionally (the
substraction in cksum is unlikely to affect any benchmark result).

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>

slirp/cksum.c

@@ -70,9 +70,7 @@ int cksum(struct mbuf *m, int len)
 
 	if (len < mlen)
 	   mlen = len;
-#ifdef DEBUG
 	len -= mlen;
-#endif
 	/*
 	 * Force to even boundary.
 	 */
@@ -122,12 +120,10 @@ int cksum(struct mbuf *m, int len)
 	   s_util.c[0] = *(uint8_t *)w;
 
 cont:
-#ifdef DEBUG
 	if (len) {
 		DEBUG_ERROR("cksum: out of data\n");
 		DEBUG_ERROR(" len = %d\n", len);
 	}
-#endif
 	if (mlen == -1) {
 		/* The last mbuf has odd # of bytes. Follow the
 		 standard (the odd byte may be shifted left by 8 bits

slirp/ip_icmp.c

@@ -257,13 +257,12 @@ icmp_send_error(struct mbuf *msrc, u_char type, u_char code, int minsize,
   /* check msrc */
   if(!msrc) goto end_error;
   ip = mtod(msrc, struct ip *);
-#ifdef DEBUG
-  { char bufa[20], bufb[20];
+  if (slirp_debug & DBG_MISC) {
+    char bufa[20], bufb[20];
     strcpy(bufa, inet_ntoa(ip->ip_src));
     strcpy(bufb, inet_ntoa(ip->ip_dst));
     DEBUG_MISC(" %.16s to %.16s\n", bufa, bufb);
   }
-#endif
   if(ip->ip_off & IP_OFFMASK) goto end_error;    /* Only reply to fragment 0 */
 
   /* Do not reply to source-only IPs */

slirp/slirp.c

@@ -195,17 +195,14 @@ static int get_dns_addr_resolv_conf(int af, void *pdns_addr, void *cached_addr,
             if (++found > 3) {
                 DEBUG_MISC("(more)");
                 break;
-            }
-#ifdef DEBUG
-            else {
+            } else if (slirp_debug & DBG_MISC) {
                 char s[INET6_ADDRSTRLEN];
                 const char *res = inet_ntop(af, tmp_addr, s, sizeof(s));
                 if (!res) {
                     res = "(string conversion error)";
                 }
                 DEBUG_MISC("%s", res);
             }
-#endif
         }
     }
     fclose(f);