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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 this stuff out, for better maintainability and readability.
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
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We need to carry frame_count through multiple calls of walk function
to account correctly for --num <pkts>. Also, move socket stats printing
into rx ring, since it belongs there.
Todo: the kernel socket seems to have a different count that what we
see. This needs to be fixed one way or the other. Not yet sure what's
causing this.
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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Lets migrate capturing to TPACKET_V3, since it will bring a better
performance due to fewer page cache misses caused by a higher density
of packets, since now they are contigous placed in the ring buffer.
It is said that TPACKET_V3 brings the following benefits:
*) ~15 - 20% reduction in CPU-usage
*) ~20% increase in packet capture rate
*) ~2x increase in packet density
*) Port aggregation analysis
*) Non static frame size to capture entire packet payload
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
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The return values is always 0 and it is never checked anyhow, so make
the function void.
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
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Check various setsockopt return values and exit accordingly if some
of them just fuck up.
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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