RadioTap Archive on lore.kernel.org
 help / color / Atom feed
From: Guy Harris <guy-FrUbXkNCsVf2fBVCVOL8/A@public.gmane.org>
To: Harald Welte <laforge-TgoAw6mPHtdg9hUCZPvPmw@public.gmane.org>
Cc: "Johannes Berg"
	<johannes-cdvu00un1VgdHxzADdlk8Q@public.gmane.org>,
	openbsc-qjLDD68F18N4m7O/Vxda39i2O/JbrIOy@public.gmane.org,
	radiotap-S783fYmB3Ccdnm+yROfE0A@public.gmane.org,
	linux-wireless-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	"Subash Abhinov Kasiviswanathan"
	<subashab-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>,
	"Dan Williams" <dcbw-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
	"Bjørn Mork" <bjorn-yOkvZcmFvRU@public.gmane.org>,
	netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	"Sean Tranchetti"
	<stranche-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>,
	"Aleksander Morgado"
	<aleksander-Dvg4H30XQSRVIjRurl1/8g@public.gmane.org>
Subject: Re: gsmtap design/extensions?
Date: Sat, 13 Apr 2019 00:55:29 -0700
Message-ID: <3658DF8E-535E-43C6-95FD-CE61E3A7164F@alum.mit.edu> (raw)
In-Reply-To: <20190413073505.GD24451@nataraja>

On Apr 13, 2019, at 12:35 AM, Harald Welte <laforge-TgoAw6mPHtdg9hUCZPvPmw@public.gmane.org> wrote:

> the "physical link info" is present in GSMTAP, but the granularity of
> GSMTAP frames is not user-IP frames, but "MAC blocks".  So your user IP
> frame might not be visible as it's still compressed, encrypted,
> fragmented, etc.

The granularity of Ethernet frames is not user IP frames, but Ethernet datagrams, so you user IP frame might not be visible as it's fragmented (the fragments might still be IP datagrams, but they would have to be reassembled - which Wireshark, for example, does, for those people still doing NFS-over-UDP :-)).

"Encrypted" may not apply there, but it *does* apply for 802.11 frames on a protected network (which Wireshark can decrypt, if you have 1) the network password for WEP or WPA-Personal and 2) the EAPOL handshake for WPA-Personal).

  parent reply index

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-04-09 13:50 Johannes Berg
     [not found] ` <CAPEnp=bHTVARr7WA9Qkq4=y7kk8_FLWhrkqKOEXubMO4X=BHCw@mail.gmail.com>
     [not found]   ` <CAPEnp=bHTVARr7WA9Qkq4=y7kk8_FLWhrkqKOEXubMO4X=BHCw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2019-04-10  7:23     ` Johannes Berg
     [not found]       ` <46474c61d7748042cc0a1f23773186786020638e.camel-cdvu00un1VgdHxzADdlk8Q@public.gmane.org>
2019-04-10  7:57         ` Marcel Holtmann
2019-04-10 23:45         ` Harald Welte
     [not found]       ` <6F1998DC-EFD2-4145-BD81-A80F9DC7ED2D@holtmann.org>
     [not found]         ` <6F1998DC-EFD2-4145-BD81-A80F9DC7ED2D-kz+m5ild9QBg9hUCZPvPmw@public.gmane.org>
2019-04-12 12:12           ` Johannes Berg
     [not found]             ` <1d64c578cd5b254d301cf1cac82f32a062916888.camel-cdvu00un1VgdHxzADdlk8Q@public.gmane.org>
2019-04-12 19:49               ` Marcel Holtmann
     [not found]             ` <D4D12CF9-9CE5-46FB-9738-F89DB6B6F9EA@holtmann.org>
     [not found]               ` <D4D12CF9-9CE5-46FB-9738-F89DB6B6F9EA-kz+m5ild9QBg9hUCZPvPmw@public.gmane.org>
2019-04-15  9:11                 ` Johannes Berg
     [not found]                   ` <92e8e142b6d441c1c995abc57d64ad7b7747a688.camel-cdvu00un1VgdHxzADdlk8Q@public.gmane.org>
2019-04-15 10:29                     ` Bjørn Mork
     [not found]                       ` <87d0ln1s0a.fsf-3F4PFWf5pNjpjLOzFPqGjWGXanvQGlWp@public.gmane.org>
2019-04-15 10:41                         ` Johannes Berg
     [not found]       ` <20190410234555.GO25552@nataraja>
2019-04-12 17:15         ` Johannes Berg
     [not found]           ` <f0a64bb751b8c601f58130a7f3a3158d70f18f63.camel-cdvu00un1VgdHxzADdlk8Q@public.gmane.org>
2019-04-12 19:54             ` Guy Harris
2019-04-13  7:12             ` Harald Welte
2019-04-13  7:49               ` Guy Harris
     [not found]           ` <196E881D-AB4A-4569-9C1F-5BCB41FE832F@alum.mit.edu>
     [not found]             ` <196E881D-AB4A-4569-9C1F-5BCB41FE832F-FrUbXkNCsVf2fBVCVOL8/A@public.gmane.org>
2019-04-12 22:47               ` Guy Harris
     [not found]                 ` <1D6FE33B-DC15-47D8-A1AD-E95608300FDC-FrUbXkNCsVf2fBVCVOL8/A@public.gmane.org>
2019-04-13  6:41                   ` Harald Welte
     [not found]                 ` <20190413064152.GB24451@nataraja>
2019-04-13  7:36                   ` Guy Harris
     [not found] ` <cf07ae24c436f92769f9289d208f01846ebe8826.camel-cdvu00un1VgdHxzADdlk8Q@public.gmane.org>
2019-04-10  6:35   ` Vadim Yanitskiy
2019-04-10 23:32   ` Harald Welte
2019-04-12 12:24     ` Johannes Berg
     [not found]       ` <1462659018bc40830efbe2348791b8df45b54cff.camel-cdvu00un1VgdHxzADdlk8Q@public.gmane.org>
2019-04-12 19:48         ` Guy Harris
2019-04-13  7:35         ` Harald Welte
     [not found]       ` <20190413073505.GD24451@nataraja>
2019-04-13  7:55         ` Guy Harris [this message]
2019-04-15  9:26         ` Johannes Berg
     [not found]       ` <1089142F-2966-4C41-921B-465FBA721E79@alum.mit.edu>
     [not found]         ` <1089142F-2966-4C41-921B-465FBA721E79-FrUbXkNCsVf2fBVCVOL8/A@public.gmane.org>
2019-04-15  9:28           ` Johannes Berg

Reply instructions:

You may reply publically 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=3658DF8E-535E-43C6-95FD-CE61E3A7164F@alum.mit.edu \
    --to=guy-frubxkncsvf2fbvcvol8/a@public.gmane.org \
    --cc=aleksander-Dvg4H30XQSRVIjRurl1/8g@public.gmane.org \
    --cc=bjorn-yOkvZcmFvRU@public.gmane.org \
    --cc=dcbw-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org \
    --cc=johannes-cdvu00un1VgdHxzADdlk8Q@public.gmane.org \
    --cc=laforge-TgoAw6mPHtdg9hUCZPvPmw@public.gmane.org \
    --cc=linux-wireless-u79uwXL29TY76Z2rM5mHXA@public.gmane.org \
    --cc=netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org \
    --cc=openbsc-qjLDD68F18N4m7O/Vxda39i2O/JbrIOy@public.gmane.org \
    --cc=radiotap-S783fYmB3Ccdnm+yROfE0A@public.gmane.org \
    --cc=stranche-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org \
    --cc=subashab-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.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

RadioTap Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/radiotap/0 radiotap/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 radiotap radiotap/ https://lore.kernel.org/radiotap \
		radiotap@radiotap.org
	public-inbox-index radiotap

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.netbsd.radiotap


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git