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Add L3 module for implement L3 layer protocols generation.
Implemented setting of IPv4 header with all fields except options.
By default IPv4 address of output device is used as src ip address.
On finish (after packet is specified) - total len & checksum are calculated.
Meanwhile Ethernet protocol is initialized as default lower header.
If the lower protocol is IPv4 then IPv4 protocol id is set
to IP-in-IP in lower protocol header.
Signed-off-by: Vadim Kochan <vadim4j@gmail.com>
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
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Add trafgen_l2.c module for generating L2 related headers.
Add Ethernet header generating. By default source MAC address
is used from the specified output device.
Signed-off-by: Vadim Kochan <vadim4j@gmail.com>
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
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Add new trafgen_proto.c module with basic protocol header fields
generation logic. This will allow to support protocol specific keywords
in the trafgen configuration language.
Each protocol must implement struct proto_hdr and register it to the
global proto list.
Protocol headers consist of a set of fields, and each field must be
described via struct proto_field by specifying unique id, length and
offset (relative to the header start). Fields smaller than 8 bits can be
described via left shift & mask.
The following callbacks are invoked to perform special actions to build
the header during parsing:
1) header_init - required fields must be added to the packet and
initialized with default values.
2) header_finish - it is invoked when header is specified, all user
specified fields are set.
3) packet_finish - callback is invoked from upper to lower header
to calculate fields depending on upper layers such as total
length or checksum.
The protocol generation API provides convenience protocol field
setters/getters to to be used in the parser while crafting the packet.
Signed-off-by: Vadim Kochan <vadim4j@gmail.com>
[tk: wordsmithing on commit message, minor variable type changes]
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
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Use cpp_exec func to invoke C preprocesor.
Signed-off-by: Vadim Kochan <vadim4j@gmail.com>
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
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Use helpers from sysctl.c module to set sock memory params
via /proc/sys/net/core.
Signed-off-by: Vadim Kochan <vadim4j@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
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Ever since we switched to the hand-crafted ./configure script, support
for cross-compiling the netsniff-ng toolkit was basically broken.
Restore the abaility to cross-compile our tools by making ./configure
consider the CROSS_COMPILE and SYSROOT variables.
Example for cross-compiling on arm:
$ CROSS_COMPILE=arm-linux-gnueabihf- \
SYSROOT=/usr/arm-linux-gnueabihf \
./configure
$ make
assuming the cross-compiled libraries (and their respective pkg-config
information) are in /usr/arm-linux-gnueabihf.
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
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netsniff-ng does not delete created rfmon device in case of
panic (for example - bad pcap filter expression), so added ability to
add callback func when panic will be happen and delete rfmon device.
Signed-off-by: Vadim Kochan <vadim4j@gmail.com>
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
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Since commit 1cc762a ("lookup: Move UDP/TCP port and Ethernet type
lookup into own module") the netsniff-ng tool is the only one using the
dissector infrastructure. Thus we no longer need to conditionally device
HAVE_DISSECTOR_PROTOS, since netsniff-ng is the only tool defining this.
While at it, also remove the __WITH_PROTOS macro which is checked in
dissector_init_ethernet/dissector_cleanup_ethernet but is defined
nowhere. This will cause the functions to be called from both the
ethernet and ieee80211 dissectors, thus make sure we check the
initialization state before freeing as well.
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
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This change implements support for specifying an alternative
installation destination directory by setting DESTDIR when
calling 'make install'.
Example: make DESTDIR=/alternative-rootfs install
It is particularly useful when cross-compiling and installing
in a dedicated directory where for example the rootfs or a
build sandbox for the target architecture is mounted.
By using DESTDIR you can avoid to mess with PREFIX to include
the alternative installation directory!
Signed-off-by: Christian Wiese <chris@opensde.org>
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
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Improve the build system, so that configuration files are installed
per tool basis. Also, introduce post_install targets, so that config
files can be altered in some way, e.g. done by trafgen. Moreover,
move custom targets from Extra to tool-specific Makefiles.
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
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To be more consistent with config.h, rename __WITH_PROTOS into
HAVE_DISSECTOR_PROTOS.
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
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To get the normal Makefile a bit cleaner, push the tool specific
build options into <tool>/Makefile.
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
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Finally eliminate xutils.{c,h} and move the rest to epoll2.
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
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Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
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Add an extra file for signal handling functions.
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
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Same here as usual, break out link functions from xutils.
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
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Remove them from xutils, and add them to socket management.
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
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Move them out of xutils, so that we can maintain them separately.
Also simplify things a bit.
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
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Again, also to be able to maintain this more easily.
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
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Move those functions out so that they can be more easily maintained
in its separate file.
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
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Rename xio to ioops (io-ops) and boil its include files down to a
minimum.
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
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Break out all string handling functions and lockme stuff in order
to further eliminate the big code blob in xutils, so that it can
be easier maintained.
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
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Break out IRQ functionality from xutils, simplify it, and
save + restore IRQ affinity list.
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
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We do not want to maintain duplicate code, so move this into a separate
file and name those *_generic() helpers.
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
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Call pkg-config --cflags and pkg-config --libs to find correct CFLAGS
and LDFLAGS respectively.
Signed-off-by: Peter Stuge <peter@stuge.se>
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
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We decided to get rid of the old Git history and start a new one for
several reasons:
*) Allow / enforce only high-quality commits (which was not the case
for many commits in the history), have a policy that is more close
to the one from the Linux kernel. With high quality commits, we
mean code that is logically split into commits and commit messages
that are signed-off and have a proper subject and message body.
We do not allow automatic Github merges anymore, since they are
total bullshit. However, we will either cherry-pick your patches
or pull them manually.
*) The old archive was about ~27MB for no particular good reason.
This basically derived from the bad decision that also some PDF
files where stored there. From this moment onwards, no binary
objects are allowed to be stored in this repository anymore.
The old archive is not wiped away from the Internet. You will still
be able to find it, e.g. on git.cryptoism.org etc.
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
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