Changeset 30426 in vbox for trunk/src/VBox

Timestamp:

Jun 24, 2010 12:25:24 PM (15 years ago)

Author:

vboxsync

svn:sync-xref-src-repo-rev:

63060

Message:

NAT: small performance enhancement. (allocate mbuf if it's required).

File:

• trunk/src/VBox/Devices/Network/slirp/sbuf.c (modified) (1 diff)

trunk/src/VBox/Devices/Network/slirp/sbuf.c

@@ -145 +145 @@
      * ottherwise it'll arrive out of order, and hence corrupt
      */
-    buf = RTMemAlloc(mlen);
-    if (buf == NULL)
-    {
-        ret = 0;
-        goto no_sent;
-    }
-    m_copydata(m, 0, mlen, buf);
+    if (m->m_next)
+    {
+        buf = RTMemAlloc(mlen);
+        if (buf == NULL)
+        {
+            ret = 0;
+            goto no_sent;
+        }
+        m_copydata(m, 0, mlen, buf);
+    }
+    else
+        buf = mtod(m, char *);
+
     if(!so->so_rcv.sb_cc)
         ret = send(so->s, buf, mlen, 0);
-    RTMemFree(buf);
+
+    if (m->m_next)
+        RTMemFree(buf);
 no_sent: