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Account for the CRC len (Jean-Jacques.Puig)

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This commit is contained in:
christos 2016-05-09 15:11:35 +00:00
parent d7ac614b0a
commit c7f0ba033b
1 changed files with 5 additions and 4 deletions
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9
sys/arch/xen/xen/xennetback_xenbus.c
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@ -1,4 +1,4 @@
/* $NetBSD: xennetback_xenbus.c,v 1.55 2016/02/09 08:32:10 ozaki-r Exp $ */ /* $NetBSD: xennetback_xenbus.c,v 1.56 2016/05/09 15:11:35 christos Exp $ */
/* /*
* Copyright (c) 2006 Manuel Bouyer. * Copyright (c) 2006 Manuel Bouyer.
@ -26,7 +26,7 @@
*/ */
#include <sys/cdefs.h> #include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: xennetback_xenbus.c,v 1.55 2016/02/09 08:32:10 ozaki-r Exp $"); __KERNEL_RCSID(0, "$NetBSD: xennetback_xenbus.c,v 1.56 2016/05/09 15:11:35 christos Exp $");
#include "opt_xen.h" #include "opt_xen.h"
@ -720,8 +720,9 @@ xennetback_tx_check_packet(const netif_tx_request_t *txreq, int vlan)
if (__predict_false(txreq->offset + txreq->size > PAGE_SIZE)) if (__predict_false(txreq->offset + txreq->size > PAGE_SIZE))
return "crossing a page boundary"; return "crossing a page boundary";
const int maxlen = int maxlen = ETHER_MAX_LEN - ETHER_CRC_LEN;
vlan ? (ETHER_VLAN_ENCAP_LEN + ETHER_MAX_LEN) : ETHER_MAX_LEN; if (vlan)
maxlen += ETHER_VLAN_ENCAP_LEN;
if (__predict_false(txreq->size > maxlen)) if (__predict_false(txreq->size > maxlen))
return "too big"; return "too big";