Rusty Russell writes:
>In message <200211260649.WAA22216@adam.yggdrasil.com> you write:
>> >TCP for example, sets the destructor function for the skb. It can be
>> >called an arbitrary time later. Netfilter modules do a similar thing,
>> >for similar reasons. You'd better grab a reference to *something*.
>>
>> The ->remove() function of a network device driver will
>> not return until it has freed all receive skb's that it allocated
>> and all transmit skb's that were passed to its transmit function.
>I'm not talking about a device driver, but modularizing the IPv4
>stack.
I don't see skb->destructor being set in net/ipv4 (although I
see it in other net/ subdirectories). Anyhow, I don't see why ipv4
would need to increment or decrement a module reference count every
time a packet is sent or received. It should suffice to do so when a
file descriptor is opened or closed and when a network connection is
created or completely forgotten (if that does not necessarily happen
before the close system call returns).
Adam J. Richter __ ______________ 575 Oroville Road
adam@yggdrasil.com \ / Milpitas, California 95035
+1 408 309-6081 | g g d r a s i l United States of America
"Free Software For The Rest Of Us."
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This archive was generated by hypermail 2b29 : Sat Nov 30 2002 - 22:00:16 EST