New function:

	 m_print(struct mbuf *);
hexdumps a mbuf.

2 files changed, 17 insertions, 0 deletions

diff --git a/sys/kern/uipc_mbuf.c b/sys/kern/uipc_mbuf.c
index d84cf0b..619f3a6 100644
--- a/sys/kern/uipc_mbuf.c
+++ b/sys/kern/uipc_mbuf.c
@@ -951,3 +951,19 @@ m_copyback(m0, off, len, cp)
 out:	if (((m = m0)->m_flags & M_PKTHDR) && (m->m_pkthdr.len < totlen))
 		m->m_pkthdr.len = totlen;
 }
+
+void
+m_print(const struct mbuf *m)
+{
+	int len;
+	struct mbuf *m2;
+
+	len = m->m_pkthdr.len;
+	m2 = m;
+	while (len) {
+		printf("%p %*D\n", m2, m2->m_len, (u_char *)m2->m_data, "-");
+		len -= m2->m_len;
+		m2 = m2->m_next;
+	}
+	return;
+}
diff --git a/sys/sys/mbuf.h b/sys/sys/mbuf.h
index 70fc882..cce10ad 100644
--- a/sys/sys/mbuf.h
+++ b/sys/sys/mbuf.h
@@ -418,6 +418,7 @@ struct	mbuf *m_get __P((int, int));
 struct	mbuf *m_getclr __P((int, int));
 struct	mbuf *m_gethdr __P((int, int));
 struct	mbuf *m_prepend __P((struct mbuf *,int,int));
+void	m_print __P((const struct mbuf *m));
 struct	mbuf *m_pullup __P((struct mbuf *, int));
 struct	mbuf *m_retry __P((int, int));
 struct	mbuf *m_retryhdr __P((int, int));