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Move the copyright/bug report/license string to an own constant and use
it for the output of help() and version() to avoid duplication and
prevent the strings from getting out of sync. This makes the text
section of bpfc.o slightly smaller:
before:
text data bss dec hex filename
3594 0 0 3594 e0a bpfc/bpfc.o
after:
text data bss dec hex filename
3313 0 0 3313 cf1 bpfc/bpfc.o
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
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Alias output format for tc/xt_bpf.
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
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In order to be able to better track regressions or to give support,
let us track the Git id as well in version information. This makes
the ``--version'' switch actually useful.
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
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Just add a minor sentence to help stating this.
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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Include long version string into tools when called with --version.
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
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Just a minor cosmetic fix.
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
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This patch allows bpf programs to be passed to the C preprocessor
before handing over to bpfc. Example:
#define ETH_P_IP 0x800
ldh [12]
jne #ETH_P_IP, drop
ldb [23]
jneq #6, drop
ldh [20]
jset #0x1fff, drop
ldxb 4 * ([14] & 0xf)
ldh [x + 14]
jeq #0x16, pass
ldh [x + 16]
jne #0x16, drop
pass: ret #-1
drop: ret #0
Compile with: bpfc -i foo -p
Suggested-by: John Lange <JLange@trendium.com>
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
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Add the __noreturn attribute to all functions which wont return
but call die() themselves to exit().
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
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Replace "on default" by "by default", make it a bit more clear what the
seed in the -E/--seed option is for and mention exit after display of
information on --version and --help.
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
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Add different bpf opcode pretty printer to support a variety of
output formats for netsniff-ng, xt_bpf, tcpdump, C-like and make
future integration of formats easier.
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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