Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/include/net/dsfield.h b/include/net/dsfield.h
new file mode 100644
index 0000000..a79c9e0
--- /dev/null
+++ b/include/net/dsfield.h
@@ -0,0 +1,54 @@
+/* include/net/dsfield.h - Manipulation of the Differentiated Services field */
+
+/* Written 1998-2000 by Werner Almesberger, EPFL ICA */
+
+
+#ifndef __NET_DSFIELD_H
+#define __NET_DSFIELD_H
+
+#include <linux/types.h>
+#include <linux/ip.h>
+#include <linux/ipv6.h>
+#include <asm/byteorder.h>
+
+
+static inline __u8 ipv4_get_dsfield(struct iphdr *iph)
+{
+ return iph->tos;
+}
+
+
+static inline __u8 ipv6_get_dsfield(struct ipv6hdr *ipv6h)
+{
+ return ntohs(*(__u16 *) ipv6h) >> 4;
+}
+
+
+static inline void ipv4_change_dsfield(struct iphdr *iph,__u8 mask,
+ __u8 value)
+{
+ __u32 check = ntohs(iph->check);
+ __u8 dsfield;
+
+ dsfield = (iph->tos & mask) | value;
+ check += iph->tos;
+ if ((check+1) >> 16) check = (check+1) & 0xffff;
+ check -= dsfield;
+ check += check >> 16; /* adjust carry */
+ iph->check = htons(check);
+ iph->tos = dsfield;
+}
+
+
+static inline void ipv6_change_dsfield(struct ipv6hdr *ipv6h,__u8 mask,
+ __u8 value)
+{
+ __u16 tmp;
+
+ tmp = ntohs(*(__u16 *) ipv6h);
+ tmp = (tmp & ((mask << 4) | 0xf00f)) | (value << 4);
+ *(__u16 *) ipv6h = htons(tmp);
+}
+
+
+#endif
