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Re: [lwip-users] oxff==0x60 condition do not match for received IP6 pack

From: Ivan Delamer
Subject: Re: [lwip-users] oxff==0x60 condition do not match for received IP6 packet in tcipip_thread
Date: Thu, 13 Nov 2014 09:32:40 -0700 
These are really useful packet dumps.

They show standard 14-byte Ethernet header followed by IPv6 header.
This packet should be accepted by ethernet_input() and from there it would go to ip6_input(). 

If you debug stepping into your functions, where does it end up?

Cheers
Ivan




Date: Wed, 12 Nov 2014 00:01:42 -0700 (MST)
From: mfkexpress <address@hidden>
To: address@hidden
Subject: Re: [lwip-users] oxff==0x60 condition do not match for
        received IP6 packet in tcipip_thread
Message-ID: <address@hidden>
Content-Type: text/plain; charset=us-ascii

I'm really very much confised with this p->payload.

Below are the settings and received packets at my device:

     1) netif->flags= NETIF_FLAG_BROADCAST | NETIF_FLAG_ETHARP |
NETIF_FLAG_LINKUP

     2) I printed incoming packets of my device using p->payload which
appears something like below:

        p->payload  33 33 00 00 00 02 74 46
                          A0 9E 85 9B 86 DD 60 00
                          00 00 00 10 3A FF FE 80
                          00 00 00 00 00 00 64 E4
                          E3 51 A0 9D 5B F4 FF 02
                          00 00 00 00 00 00 00 00
                          00 00 00 00 00 02 85 00
                          9C E5 00 00 00 00 01 01
                          74 46 A0 9E 85 9B AF DD
                          0E D2

       p->payload  33 33 00 00 00 01 74 46
                         A0 9E 85 9B 86 DD 60 00
                         00 00 00 20 3A FF FE 80
                         00 00 00 00 00 00 64 E4
                         E3 51 A0 9D 5B F4 FF 02
                         00 00 00 00 00 00 00 00
                         00 00 00 00 00 01 88 00
                         35 8D 20 00 00 00 FE 80
                         00 00 00 00 00 00 64 E4
                         E3 51 A0 9D 5B F4 02 01
                         74 46 A0 9E 85 9B 6F 23
                         2A 63

Now first nibble is not "6' in above packets but 30th byte is "6".
Than how it will enter into IPV6 case of tcpip_thread()??

Please any soluton..

Regards,
Mohsin
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