From: Krishna Kumar <krkumar2@in.ibm.com>
To: davem@davemloft.net
Cc: netdev@vger.kernel.org, Krishna Kumar <krkumar2@in.ibm.com>
Subject: [PATCH v1] ip6_pol_route panic: Do not allow VLAN on loopback
Date: Thu, 14 Apr 2011 21:37:04 +0530 [thread overview]
Message-ID: <20110414160704.32251.17281.sendpatchset@krkumar2.in.ibm.com> (raw)
I have tested two ways of fixing this panic:
1. PATCH1: Do not allow vlan on lo.
2. PATCH2: Do not propagate LOOPBACK to vlan devices.
Isn't it better to use PATCH1 and disallow vlan on lo?
The result of this patch is:
# modprobe 8021q
# vconfig add lo 43
ERROR: trying to add VLAN #43 to IF -:lo:- error: Operation not supported
Signed-off-by: Krishna Kumar <krkumar2@in.ibm.com>
---
drivers/net/loopback.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff -ruNp org/drivers/net/loopback.c new1/drivers/net/loopback.c
--- org/drivers/net/loopback.c 2011-04-14 20:45:46.000000000 +0530
+++ new1/drivers/net/loopback.c 2011-04-14 20:47:09.000000000 +0530
@@ -173,7 +173,8 @@ static void loopback_setup(struct net_de
| NETIF_F_RXCSUM
| NETIF_F_HIGHDMA
| NETIF_F_LLTX
- | NETIF_F_NETNS_LOCAL;
+ | NETIF_F_NETNS_LOCAL
+ | NETIF_F_VLAN_CHALLENGED;
dev->ethtool_ops = &loopback_ethtool_ops;
dev->header_ops = ð_header_ops;
dev->netdev_ops = &loopback_ops;
next reply other threads:[~2011-04-14 16:07 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-04-14 16:07 Krishna Kumar [this message]
2011-04-14 16:07 ` [PATCH v2] ip6_pol_route panic: Do not propagate LOOPBACK to VLAN Krishna Kumar
2011-04-18 6:27 ` [PATCH v1] ip6_pol_route panic: Do not allow VLAN on loopback David Miller
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