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if_xennet: m_paddr is not always valid.

This commit is contained in:
yamt 2005-04-14 13:15:48 +00:00
parent 9e56f2c967
commit f76348ddee
1 changed files with 8 additions and 3 deletions
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11
sys/arch/xen/xen/if_xennet.c
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@ -1,4 +1,4 @@
/* $NetBSD: if_xennet.c,v 1.18 2005/04/14 12:37:43 yamt Exp $ */
/* $NetBSD: if_xennet.c,v 1.19 2005/04/14 13:15:48 yamt Exp $ */
/*
*
@ -33,7 +33,7 @@
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: if_xennet.c,v 1.18 2005/04/14 12:37:43 yamt Exp $");
__KERNEL_RCSID(0, "$NetBSD: if_xennet.c,v 1.19 2005/04/14 13:15:48 yamt Exp $");
#include "opt_inet.h"
#include "rnd.h"
@ -1013,11 +1013,16 @@ xennet_start(struct ifnet *ifp)
pa = m->m_ext.ext_paddr +
(m->m_data - m->m_ext.ext_buf);
break;
default:
case 0:
pa = m->m_paddr + M_BUFOFFSET(m) +
(m->m_data - M_BUFADDR(m));
break;
default:
if (!pmap_extract(pmap_kernel(), (vaddr_t)m->m_data,
&pa)) {
panic("xennet_start: no pa");
}
break;
}
if (m->m_pkthdr.len != m->m_len ||