patch-2.4.26 linux-2.4.26/net/core/sock.c

• Lines: 17
• Date: 2004-04-14 06:05:41.000000000 -0700
• Orig file: linux-2.4.25/net/core/sock.c
• Orig date: 2003-06-13 07:51:39.000000000 -0700

diff -urN linux-2.4.25/net/core/sock.c linux-2.4.26/net/core/sock.c
@@ -128,6 +128,16 @@
 #include <net/tcp.h>
 #endif
 
+/* Take into consideration the size of the struct sk_buff overhead in the
+ * determination of these values, since that is non-constant across
+ * platforms.  This makes socket queueing behavior and performance
+ * not depend upon such differences.
+ */
+#define _SK_MEM_PACKETS		256
+#define _SK_MEM_OVERHEAD	(sizeof(struct sk_buff) + 256)
+#define SK_WMEM_MAX		(_SK_MEM_OVERHEAD * _SK_MEM_PACKETS)
+#define SK_RMEM_MAX		(_SK_MEM_OVERHEAD * _SK_MEM_PACKETS)
+
 /* Run time adjustable parameters. */
 __u32 sysctl_wmem_max = SK_WMEM_MAX;
 __u32 sysctl_rmem_max = SK_RMEM_MAX;