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Message-ID: <3A0AE91D.AC074BAE@mandrakesoft.com>
Date: Thu, 09 Nov 2000 13:12:45 -0500
From: Jeff Garzik <jgarzik@mandrakesoft.com>
Organization: MandrakeSoft
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To: Steven_Snyder@3com.com, linux-kernel@vger.kernel.org
Subject: Re: Porting Linux v2.2.x Ethernet driver to v2.4.x?
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...and the attached document, referred to in the previous mail.  :)   I
think I posted this recently, but it's small so a repost is no big deal.
-- 
Jeff Garzik             |
Building 1024           | Would you like a Twinkie?
MandrakeSoft            |
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Content-Type: text/plain; charset=us-ascii;
 name="netdevices.txt"
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Content-Disposition: inline;
 filename="netdevices.txt"


Network Devices, the Kernel, and You!


Introduction
============
The following is a random collection of documentation regarding
network devices.




struct net_device synchronization rules
=======================================
dev->open:
	Locking: Inside rtnl_lock() semaphore.
	Sleeping: OK

dev->stop:
	Locking: Inside rtnl_lock() semaphore.
	Sleeping: OK

dev->do_ioctl:
	Locking: Inside rtnl_lock() semaphore.
	Sleeping: OK

dev->get_stats:
	Locking: Inside dev_base_lock spinlock.
	Sleeping: NO

dev->hard_start_xmit:
	Locking: Inside dev->xmit_lock spinlock.
	Sleeping: NO

dev->tx_timeout:
	Locking: Inside dev->xmit_lock spinlock.
	Sleeping: NO

dev->set_multicast_list:
	Locking: Inside dev->xmit_lock spinlock.
	Sleeping: NO



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