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Re: [lwip-users] Problem using 2 Netifs
From: |
Fred39 |
Subject: |
Re: [lwip-users] Problem using 2 Netifs |
Date: |
Fri, 22 Jun 2012 06:20:54 -0700 (PDT) |
Ok i found the problem, both netifs had similar ip configuration "same
subnet" which was the problem thus the packets where send to the first netif
in the list :)
Is this behaviour specified somewhere ?
Regards
Fred39 wrote:
>
> Hi LWIP Users,
>
> I am currently working on a device which has two network interfaces. One
> from the uC and one over USB which is a virtual network device. My Lwip
> Version is 1.1.1 i know its old but i am not allowed to change it. Could
> lwip make problems when 2 netifs are registred? I set my uC netif as
> default because it uses dhcp/static ip for that i use the global
> netif_default for it. The virtual netif has a static ip.
> My Pseudo code looks like this:
>
> 1. init_lwip
> 2. HW init uC
> 3. netif_add(uCnetif,tcpip_input)
> 4. HW_init virtual device
> 5. netif_add(virtualnetif,tcpip_input)
>
> In the global variable netif_list is see both of the netifs with correct
> settings. I only set the uC netif as default, because for this i use
> different protocol for IP address (DHCP or static) and i set IP through my
> application thread in a thread save way :)
>
> I am now facing a problem that my upperlayer tasks using tcp or udp are
> not working when both interfaces are added. If only the uC netif is
> initialized it works.
> When 2 netifs over Wireshark is see that data is send to my device but i
> get a SACK_PERM=1, the device is not recveiving the data.
> Is this phenomen familiar to somebody? Should it be possible to use 2
> netifs in the old lwip 1.1.1 ?
>
> Where could i start searching for the problem.
>
> Regards
>
--
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- [lwip-users] Problem using 2 Netifs, Fred39, 2012/06/22
- Re: [lwip-users] Problem using 2 Netifs,
Fred39 <=
- Re: [lwip-users] Problem using 2 Netifs, Funk, Artur, 2012/06/25
- Re: [lwip-users] Problem using 2 Netifs, Simon Goldschmidt, 2012/06/25
- [lwip-users] DHCP and AUTOIP cooperation, Funk, Artur, 2012/06/25
- Re: [lwip-users] DHCP and AUTOIP cooperation, Simon Goldschmidt, 2012/06/25
- Re: [lwip-users] DHCP and AUTOIP cooperation, Funk, Artur, 2012/06/25
- Re: [lwip-users] DHCP and AUTOIP cooperation, Krzysztof WesoĊowski, 2012/06/25
- Re: [lwip-users] DHCP and AUTOIP cooperation, Pomeroy, Marty, 2012/06/25
- Re: [lwip-users] DHCP and AUTOIP cooperation, Funk, Artur, 2012/06/25
- Re: [lwip-users] Problem using 2 Netifs, yueyue papa, 2012/06/26
- Re: [lwip-users] Problem using 2 Netifs, Kieran Mansley, 2012/06/28