X-Git-Url: http://git.onelab.eu/?p=ipfw.git;a=blobdiff_plain;f=dummynet2%2Finclude%2Fsys%2Fmbuf.h;fp=dummynet2%2Finclude%2Fsys%2Fmbuf.h;h=e65bbb6eded55969c95ba9005e52b1b2a9399ce7;hp=a752ebdfc3c3ac13e3c3fb6bcfbd9c74b27b5bda;hb=28a7fe9d930667786b902af6697c01eb87694173;hpb=2a8b6c544cf5ea3c84f763144c7ecfa79daea969

diff --git a/dummynet2/include/sys/mbuf.h b/dummynet2/include/sys/mbuf.h
index a752ebd..e65bbb6 100644
--- a/dummynet2/include/sys/mbuf.h
+++ b/dummynet2/include/sys/mbuf.h
@@ -164,10 +164,20 @@ m_tag_delete(struct mbuf *m, struct m_tag *t)
 static __inline struct m_tag *
 m_tag_locate(struct mbuf *m, u_int32_t n, int x, struct m_tag *t)
 {
-	return NULL;
+	struct m_tag *tag;
+
+	tag = m_tag_first(m);
+	if (tag == NULL)
+		return NULL;
+
+	if (tag->m_tag_cookie != n || tag->m_tag_id != x)
+		return NULL;
+	else
+		return tag;
 };
 
 #define M_SETFIB(_m, _fib)	/* nothing on linux */
+
 static __inline void
 m_freem(struct mbuf *m)
 {
@@ -187,6 +197,29 @@ m_freem(struct mbuf *m)
 
 #define M_GETFIB(_m)	0
 
+/* macro used to create a new mbuf */
+#define MT_DATA         1       /* dynamic (data) allocation */
+#define MSIZE           256     /* size of an mbuf */
+#define MGETHDR(_m, _how, _type)   ((_m) = m_gethdr((_how), (_type)))
+
+/* allocate and init a new mbuf using the same structure of FreeBSD */
+static __inline struct mbuf *
+m_gethdr(int how, short type)
+{
+	struct mbuf *m;
+
+	m = malloc(MSIZE, M_IPFW, M_NOWAIT);
+
+	if (m == NULL) {
+		return m;
+	}
+
+	/* here we have MSIZE - sizeof(struct mbuf) available */
+	m->m_data = m + 1;
+
+	return m;
+}
+
 #endif /* __linux__ || _WIN32 */
 
 /*