Re: [PATCH 1/5 2.6.21-rc4] l2tp: pppol2tp core

James Chapman wrote:

[PPPOL2TP]: Add PPP-over-L2TP driver core.

A couple more comments:

- seq_file handling doesn't check seq_printf return values and
  tries to dump the entire hash table at once, which might
  exceed the available room.

- there appear to be no checks for duplicate session IDs on
  session creation.

- try_module_get/put_module in pppol2tp_create look unnecessary

- kfree can take NULL pointers

- direct dereference of user pointer in pppol2tp_sendmsg debugging

- jiffies.h includes conversion functions for HZ <-> msecs

- Any particular reason why the SKB_CB is put after inet_skb_parm?
  On 64 bit this almost reaches the limit, might be safer to put
  it at the beginning.