From: "David S. Miller" <davem@redhat.com>
To: Ben Greear <greearb@candelatech.com>
Cc: netdev@oss.sgi.com, tommy.christensen@tpack.net
Subject: Re: [PATCH] Handle shared SKBs in VLAN receive code
Date: Sat, 11 Oct 2003 12:54:26 -0700 [thread overview]
Message-ID: <20031011125426.542e47f7.davem@redhat.com> (raw)
In-Reply-To: <3F88602B.7020603@candelatech.com>
On Sat, 11 Oct 2003 12:55:23 -0700
Ben Greear <greearb@candelatech.com> wrote:
> I have read the sk_buf.h file repeatedly trying to get this all straight
> in my head, and I think I'm still missing things. Is there any other
> documentation around that describes in detail exactly the things you must
> do to handle shared skbs in all contexts?
No there isn't, sorry.
If you just want to read the IP address in a packet, or anything else
in general you have two options:
1) if (pskb_may_pull(skb, len))
goto drop;
After this call, it is guarenteed you may look at
the all bytes up to 'len' from the start of the SKB
using skb->data et al.
2) Use skb_peek_bits().
next prev parent reply other threads:[~2003-10-11 19:54 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-10-10 23:38 [PATCH] Handle shared SKBs in VLAN receive code Tommy Christensen
2003-10-10 23:52 ` Ben Greear
2003-10-11 0:09 ` Tommy Christensen
2003-10-11 19:03 ` Ben Greear
2003-10-11 19:03 ` David S. Miller
2003-10-11 19:55 ` Ben Greear
2003-10-11 19:54 ` David S. Miller [this message]
2003-10-12 10:00 ` Tommy Christensen
2003-10-13 17:19 ` David S. Miller
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=20031011125426.542e47f7.davem@redhat.com \
--to=davem@redhat.com \
--cc=greearb@candelatech.com \
--cc=netdev@oss.sgi.com \
--cc=tommy.christensen@tpack.net \
/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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.