From: cranium2003 <cranium2003@yahoo.com>
To: kernerl mail <linux-kernel@vger.kernel.org>
Subject: analysing ip_rcv code problems
Date: Fri, 10 Dec 2004 01:54:55 -0800 (PST) [thread overview]
Message-ID: <20041210095455.62156.qmail@web41402.mail.yahoo.com> (raw)
hello,
I know that in kernel 2.4 series,
function used to receive IP packets is ip_rcv. But i
am not getting where exactly IP header is removed that
is following lines from function ip_rcv can be used to
remove IP header
if (!pskb_may_pull(skb,
sizeof(struct iphdr)))
goto inhdr_error;
iph = skb->nh.iph;
...
...
...
...
and also
following lines from same kernel is used to remove
header as IP
header length is 20 bytes then which function actually
does IP header removal.
if (!pskb_may_pull(skb,
iph->ihl*4))
goto inhdr_error;
iph = skb->nh.iph;
Also why iph = skb->nh.iph statement is used twice in
function code ip_rcv.
regards,
cranium.
__________________________________
Do you Yahoo!?
Send holiday email and support a worthy cause. Do good.
http://celebrity.mail.yahoo.com
reply other threads:[~2004-12-10 9:55 UTC|newest] Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20041210095455.62156.qmail@web41402.mail.yahoo.com \
--to=cranium2003@yahoo.com \
--cc=linux-kernel@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®