netdev - lock_sock or sock

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Message-ID: <AANLkTim7LQ65RWvy+TQ+HtwjJM89zt4g12H6mFinQT0v@mail.gmail.com>
Date:	Mon, 26 Jul 2010 17:00:15 +0300
From:	Neshama Parhoti <pneshama@...il.com>
To:	netdev@...r.kernel.org
Subject: lock_sock or sock_hold ?

hello everyone,

can you please be kind and help me understand the differences between
lock_sock and sock_hold ?

i can see that lock_sock takes a spin lock (bh) to mark owned = 1, and
then takes a mutex, whereas sock_hold only increases the atomic
refcnt.

but how do i know which of them I should use ?

i'm puzzled as to when should those two different APIs be used..

thank you a lot
~pnesh
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