PERFORCE change 126440 for review

[Kip Macy]

http://perforce.freebsd.org/chv.cgi?CH=126440

Change 126440 by kmacy at kmacy_home:ethng on 2007/09/15 20:02:28

	allocate larger mbufs if appropriate and physical contiguity is enabled

Affected files ...

.. //depot/projects/ethng/src/sys/kern/uipc_mbuf.c#2 edit

Differences ...

==== //depot/projects/ethng/src/sys/kern/uipc_mbuf.c#2 (text+ko) ====

@@ -109,9 +109,18 @@
 
 	/* Loop and append maximum sized mbufs to the chain tail. */
 	while (len > 0) {
+		int clsize = MJUMPAGESIZE;
+
+		if (jumbo_phys_contig) {
+			if (len >= MJUM9BYTES)
+				clsize = MJUM16BYTES;
+			else if (len >= MJUMPAGESIZE)
+				clsize = MJUM9BYTES;
+		}
+
 		if (len > MCLBYTES)
 			mb = m_getjcl(how, type, (flags & M_PKTHDR),
-			    MJUMPAGESIZE);
+			    clsize);
 		else if (len >= MINCLSIZE)
 			mb = m_getcl(how, type, (flags & M_PKTHDR));
 		else if (flags & M_PKTHDR)