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Date: Tue, 24 Dec 2002 23:27:34 +0100
From: Aurelien Nephtali <aurelien.nephtali@wanadoo.fr>
To: current@freebsd.org
Subject: Re: [PATCH] Wrong behaviour of writes of IP packets through BPF fd
Message-ID: <20021224222734.GA79092@nebula.wanadoo.fr>
References: <20021224205819.GA2042@nebula.wanadoo.fr> <20021224221734.GA69934@nebula.wanadoo.fr>
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>=20
> Hum ... the previous patch against bpf.c was the result of multiple test,=
 thus
> it was _VERY_ ugly with useless lines of code... now the new one is clean=
er :)
> (it's just aesthetic modifications but ... better for the eyes :p)
>=20
> -- Aurelien


@!#~& *tired* here is the ghost patch ... sorry

-- Aurelien

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--- sys/net/bpf.c	Tue Dec 24 23:26:49 2002
+++ sys/net/bpf.c	Tue Dec 24 23:13:14 2002
@@ -68,6 +68,8 @@
 #include <net/bpfdesc.h>
=20
 #include <netinet/in.h>
+#include <netinet/in_systm.h>
+#include <netinet/ip.h>
 #include <netinet/if_ether.h>
 #include <sys/kernel.h>
 #include <sys/sysctl.h>
@@ -549,6 +551,7 @@
 	int error;
 	static struct sockaddr dst;
 	int datlen;
+	struct ip *ip;
=20
 	if (d->bd_bif =3D=3D 0)
 		return (ENXIO);
@@ -572,6 +575,10 @@
 #ifdef MAC
 	mac_create_mbuf_from_bpfdesc(d, m);
 #endif
+	if (dst.sa_family =3D=3D AF_UNSPEC) {
+		ip =3D mtod(m, struct ip *);
+		ip->ip_len =3D htons(ip->ip_len);
+	}
=20
 	error =3D (*ifp->if_output)(ifp, m, &dst, (struct rtentry *)0);
 	mtx_unlock(&Giant);

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