From: Stephen Hemminger <shemminger@linux-foundation.org>
To: Krzysztof Oledzki <olel@ans.pl>, Greg KH <greg@kroah.com>
Cc: stable@kernel.org, netdev@vger.kernel.org,
Pierre-Yves Ritschard <pyr@spootnik.org>
Subject: [PATCH 2/3] sky2: fix VLAN receive processing
Date: Fri, 28 Sep 2007 09:48:13 -0700 [thread overview]
Message-ID: <20070928164858.539587428@linux-foundation.org> (raw)
In-Reply-To: 20070928164811.387831540@linux-foundation.org
[-- Attachment #1: sky2-vlan-len.patch --]
[-- Type: text/plain, Size: 1221 bytes --]
The length check for truncated frames was not correctly handling
the case where VLAN acceleration had already read the tag.
Also, the Yukon EX has some features that use high bit of status
as security tag.
Signed-off-by: Pierre-Yves Ritschard <pyr@spootnik.org>
Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
--- a/drivers/net/sky2.c 2007-09-28 09:13:38.000000000 -0700
+++ b/drivers/net/sky2.c 2007-09-28 09:21:26.000000000 -0700
@@ -2049,6 +2049,7 @@ static struct sk_buff *sky2_receive(stru
struct sky2_port *sky2 = netdev_priv(dev);
struct rx_ring_info *re = sky2->rx_ring + sky2->rx_next;
struct sk_buff *skb = NULL;
+ u16 count;
if (unlikely(netif_msg_rx_status(sky2)))
printk(KERN_DEBUG PFX "%s: rx slot %u status 0x%x len %d\n",
@@ -2063,7 +2064,13 @@ static struct sk_buff *sky2_receive(stru
if (!(status & GMR_FS_RX_OK))
goto resubmit;
- if (status >> 16 != length)
+ count = (status & GMR_FS_LEN) >> 16;
+#ifdef SKY2_VLAN_TAG_USED
+ /* Account for vlan tag */
+ if (sky2->vlgrp && (status & GMR_FS_VLAN))
+ count -= VLAN_HLEN;
+#endif
+ if (count != length)
goto len_mismatch;
if (length < copybreak)
--
Stephen Hemminger <shemminger@linux-foundation.org>
next prev parent reply other threads:[~2007-09-28 16:52 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-09-28 16:48 [PATCH 0/3] sky2: patches for 2.6.22.y Stephen Hemminger
2007-09-28 16:48 ` [PATCH 1/3] sky2: reduce impact of watchdog timer Stephen Hemminger
2007-09-28 16:48 ` Stephen Hemminger [this message]
2007-09-28 18:40 ` [PATCH 2/3] sky2: fix VLAN receive processing Krzysztof Oledzki
2007-09-28 19:20 ` [stable] " Chris Wright
2007-09-28 19:36 ` Stephen Hemminger
2007-09-28 19:41 ` Chris Wright
2007-09-28 16:48 ` [PATCH 3/3] sky2: fix transmit state on resume Stephen Hemminger
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