return dsfield & INET_ECN_ECT_0;
}
+/*
+ * RFC 3168 9.1.1
+ * The full-functionality option for ECN encapsulation is to copy the
+ * ECN codepoint of the inside header to the outside header on
+ * encapsulation if the inside header is not-ECT or ECT, and to set the
+ * ECN codepoint of the outside header to ECT(0) if the ECN codepoint of
+ * the inside header is CE.
+ */
static inline __u8 INET_ECN_encapsulate(__u8 outer, __u8 inner)
{
outer &= ~INET_ECN_MASK;