linux-kernel - Protocol handler using dev_add

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <CAP2AAQMvx5yxVRLN4AT_YdsFJAUDRgSNwzq0A3x8JyZgXKEjmw@mail.gmail.com>
Date:	Wed, 11 Jul 2012 10:38:49 -0300
From:	Jerry Yu <jerryy@...il.com>
To:	linux-kernel@...r.kernel.org
Subject: Protocol handler using dev_add_pack

I am working on a kernel module to monitor all TCP packets. I created a protocol
handler with protocol code ETH_P_ALL to handle all incoming and outgoing
TCP packets. The code worked fine on 2.6.14 kernel, but in current 3.2.0-26
kernel, I am no longer able to get the TCP payload for outgoing packets.
The data in TCP payload section of skb->data are mainly 0x00. I am still
able to get incoming TCP packets' payloads though.

Is there any change in 3.2.0 or other early kernel versions that will cause
this issue?

Thanks,

Jerry
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/