netdev - dev_loopback_xmit parameters

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Date:   Mon, 23 Apr 2018 23:40:20 +0200
From:   Emanuele <e.emanuelegiuseppe@...il.com>
To:     Linux Kernel Network Developers <netdev@...r.kernel.org>
Subject: dev_loopback_xmit parameters

Hello,

I don't know if this is the right place where to ask, but I was 
wondering why the dev_loopback_xmit function defined in /net/core/dev.c 
takes struct net * and struct sock *  as parameters. They are never 
used, so I believe passing only the struct  sk_buff * should be enough.

In addition, it would like to know where I can read what is and how to 
set a skb dst_entry, since I don't really understand it.

Thanks a lot,

Emanuele