Hi, imho is more stable using ubuntu 14.04 LTS, yes we need see dmesg, syslog, network messages, you could put your txt files on pastebin.com and especify url for us. if necessary we access these files. keep special attention to syslog or network messages, and show how you start your qemu, what windows, service pack etc you choose, ipv4 or ipv6. lets see first infra-structure, networks, tap, bridge, memory, disk, hardware setup.
yes we can.
2016-02-02 2:48 GMT-02:00 <bridge-request@xxxxxxxxxxxxxxxxxxxxxxxxxx>:
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Today's Topics:
1. Help with Ubuntu + bridge + tap + qemu + Windows (David Logan)
2. Re: Help with Ubuntu + bridge + tap + qemu + Windows (David Logan)
3. [PATCH RESEND] bridge:Fix concurrent access issue in the
function brnf_get_logical_dev (Nicholas Krause)
4. Re: Help with Ubuntu + bridge + tap + qemu + Windows
(Stephen Hemminger)
5. Re: Help with Ubuntu + bridge + tap + qemu + Windows (David Logan)
---------- Mensagem encaminhada ----------
From: David Logan <djlogan2.dl@xxxxxxxxx>
To: bridge@xxxxxxxxxxxxxxxxxxxxxxxxxx
Cc:
Date: Mon, 1 Feb 2016 12:51:20 -0700
Subject: Help with Ubuntu + bridge + tap + qemu + WindowsHi guysI have been researching this problem for weeks, and I have tried everything every web page has even remotely suggested, and nothing works. I am at my wits end, and I simply *must* get my issue resolved.Basically, when I bring up one or more VMs using tap# on a br# on an eth#, the network interface will work for a random amount of time, but inevitably something will die, and the “TX packets” stops incrementing, and the “TX packets dropped” takes over. At that point, I can shut down and start up my VM, and go through the cycle again with a different random time and packets transmitted.tap2 Link encap:Ethernet HWaddr 8a:21:a8:cb:f5:98inet6 addr: fe80::8821:a8ff:fecb:f598/64 Scope:LinkUP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1RX packets:51870 errors:0 dropped:0 overruns:0 frame:0TX packets:741595 errors:0 dropped:5702 overruns:0 carrier:0collisions:0 txqueuelen:500RX bytes:3220139 (3.2 MB) TX bytes:1113177111 (1.1 GB)I could obviously post every shred of information I have, ethtool, iptables, netstat, brctl, etc. but I hate to create a 10K email with mostly unnecessary outputs. If anyone has a specific set of questions they need answered, I am more than happy to provide. I’m running the latest Ubuntu and get updates daily. The uname -a as of this morning is:Darwin Carolyns-MacBook-Air.local 15.3.0 Darwin Kernel Version 15.3.0: Thu Dec 10 18:40:58 PST 2015; root:xnu-3248.30.4~1/RELEASE_X86_64 x86_64What in the world am I doing wrong, or where is this failing, how do I find it, and most importantly, how do I fix it? :)Thank you,David Logan
---------- Mensagem encaminhada ----------
From: David Logan <djlogan2.dl@xxxxxxxxx>
To: bridge@xxxxxxxxxxxxxxxxxxxxxxxxxx
Cc:
Date: Mon, 1 Feb 2016 13:04:48 -0700
Subject: Re: Help with Ubuntu + bridge + tap + qemu + Windowsoops. Wrong machine. The uname -a really isLinux server2 3.16.0-59-generic #79~14.04.1-Ubuntu SMP Mon Jan 18 15:41:27 UTC 2016 x86_64 x86_64 x86_64 GNU/LinuxDavid Logan
---------- Mensagem encaminhada ----------
From: Nicholas Krause <xerofoify@xxxxxxxxx>
To: pablo@xxxxxxxxxxxxx
Cc: netdev@xxxxxxxxxxxxxxx, bridge@xxxxxxxxxxxxxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, kaber@xxxxxxxxx, coreteam@xxxxxxxxxxxxx, netfilter-devel@xxxxxxxxxxxxxxx, kadlec@xxxxxxxxxxxxxxxxx, davem@xxxxxxxxxxxxx
Date: Mon, 1 Feb 2016 22:19:33 -0500
Subject: [PATCH RESEND] bridge:Fix concurrent access issue in the function brnf_get_logical_dev
This fixes a concurrent access issue in the function brnf_get_logical_dev
by properly locking with the function rcu_read_lock before calling the
function vlan_find_dev_deep_rcu and unlocking after this function call
as all callers of this function are required to do this in order to
improve issues with concurrent access by other threads executing
on this data structures simultaneously.
Signed-off-by: Nicholas Krause <xerofoify@xxxxxxxxx>
---
net/bridge/br_netfilter_hooks.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/net/bridge/br_netfilter_hooks.c b/net/bridge/br_netfilter_hooks.c
index c8b9bcf..73c84a8 100644
--- a/net/bridge/br_netfilter_hooks.c
+++ b/net/bridge/br_netfilter_hooks.c
@@ -428,9 +428,10 @@ static struct net_device *brnf_get_logical_dev(struct sk_buff *skb, const struct
if (brnf_pass_vlan_indev == 0 || !skb_vlan_tag_present(skb))
return br;
+ rcu_read_lock();
vlan = __vlan_find_dev_deep_rcu(br, skb->vlan_proto,
skb_vlan_tag_get(skb) & VLAN_VID_MASK);
-
+ rcu_read_unlock();
return vlan ? vlan : br;
}
--
2.1.4
---------- Mensagem encaminhada ----------
From: Stephen Hemminger <stephen@xxxxxxxxxxxxxxxxxx>
To: David Logan <djlogan2.dl@xxxxxxxxx>
Cc: bridge@xxxxxxxxxxxxxxxxxxxxxxxxxx
Date: Tue, 2 Feb 2016 14:27:08 +1100
Subject: Re: Help with Ubuntu + bridge + tap + qemu + Windows
On Mon, 1 Feb 2016 13:04:48 -0700
David Logan <djlogan2.dl@xxxxxxxxx> wrote:
> oops. Wrong machine. The uname -a really is
>
> Linux server2 3.16.0-59-generic #79~14.04.1-Ubuntu SMP Mon Jan 18 15:41:27 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
>
> David Logan
>
>
I suspect you have a loop and STP is detecting that the STP packets being sent
out one of the ports on the bridge are showing back up on another port on the bridge.
The way bridging works you need to make each port on the bridge is a separate L2 domain;
otherwise you create a loop.
---------- Mensagem encaminhada ----------
From: David Logan <djlogan2.dl@xxxxxxxxx>
To: Stephen Hemminger <stephen@xxxxxxxxxxxxxxxxxx>
Cc: bridge@xxxxxxxxxxxxxxxxxxxxxxxxxx
Date: Mon, 1 Feb 2016 21:48:51 -0700
Subject: Re: Help with Ubuntu + bridge + tap + qemu + WindowsThat was a bit above my head. Can you elaborate or point me towards a web site that explains the terminology? Sorry, I’m reasonable at networking, I know what levels are, I have an idea of what the various fields and stuff are, but I am no means an expert :)Also: While I have STP enabled at the moment as the recommendation of one web site, most of the time STP has been disabled in the bridge. I can turn it off and/or reboot and replicate the problem in minutes. Does that alter your suggestion?David Logan
On Feb 1, 2016, at 8:27 PM, Stephen Hemminger <stephen@xxxxxxxxxxxxxxxxxx> wrote:On Mon, 1 Feb 2016 13:04:48 -0700
David Logan <djlogan2.dl@xxxxxxxxx> wrote:oops. Wrong machine. The uname -a really is
Linux server2 3.16.0-59-generic #79~14.04.1-Ubuntu SMP Mon Jan 18 15:41:27 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
David Logan
I suspect you have a loop and STP is detecting that the STP packets being sent
out one of the ports on the bridge are showing back up on another port on the bridge.
The way bridging works you need to make each port on the bridge is a separate L2 domain;
otherwise you create a loop.
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