If one tries to write a datagram to a bpf device, and the datagram is
longer than the MTU on the physical interface, the write fails as it
should, but an mbuf is allocated and thrown away. Proposed solution:
--- bpf.c.orig Mon Dec 27 10:43:06 2004
+++ bpf.c Mon Dec 27 10:44:16 2004
@@ -633,8 +633,10 @@
if (error)
return (error);
- if (datlen > ifp->if_mtu)
+ if (datlen > ifp->if_mtu) {
+ m_freem(m);
return (EMSGSIZE);
+ }
if (d->bd_hdrcmplt)
dst.sa_family = pseudo_AF_HDRCMPLT;
--Johnny
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