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Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: Thomas Haller <thaller@redhat.com>
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... to be able to return a negative error code for unknown modes.
[thaller@redhat.com: This is potentially an ABI break, but since
the size of the enum is implementation defined, it seems
anyway unstable to have them as function arguments/return values.]
http://lists.infradead.org/pipermail/libnl/2014-August/001616.html
Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: Thomas Haller <thaller@redhat.com>
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Hello,
libnl 3.2.9 does not build with musl libc, without patching.
I' using a current musl libc (http://www.etalabs.net/musl/)
with linux 2.6.32 headers.
At first there were a couple problems on the musl side, but those are
resolved.
However, I found some other issues:
First, two files were missing
#include <byteswap.h>:
lib/netfilter/log_msg.c
lib/netfilter/queue_msg.c
These files used __bswap_64 (which should be bswap_64), a macro
declared in byteswap.h
Second, I got this error after fixing that:
In file included from nf-queue.c:16:
./include/linux/netfilter.h:53: error: field in has incomplete type
./include/linux/netfilter.h:54: error: field in6 has incomplete type
I found that src/nf-queue.c is missing an
#include <netinet/in.h>
Attached is a patch which resolves these issues. I've tested with both
musl and glibc, and it builds cleanly on both.
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The only part of commit d378220c (src/nf-queue.c: cleanup and improve
performance of test program for NF_QUEUE) that actually makes sense is
the increase in receive buffer size. Issuing verdicts for IDs not delivered
to userspace is a wasted effort since the kernel drops packets itself when
netlink message delivery fails. This would actually have been noticed
by a return value of -ENOENT if the result of nfnl_queue_msg_send_verdict()
would have been checked.
Signed-off-by: Patrick McHardy <kaber@trash.net>
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* Fix filename in file header
* If the kernel or netlink socket becomes over loaded,
the kernel starts printing error messages like:
nf_queue: full at 1024 entries, dropping packets(s). Dropped: 1
nf_queue: full at 1024 entries, dropping packets(s). Dropped: 2
nf_queue: full at 1024 entries, dropping packets(s). Dropped: 3
So detect out of order packet ID's and set the NF_ACCEPT verdictÂ,
so they will be removed from the kernel queue.
* increase socket buffer to improve performance
without these changes sending more than 100 KB/s over tcp HTTP lo(localhost)
was difficult on my core2 duo machine, due to so many dropped packets.
After these changes over 150 MB/s was easy.
* improve help text
Signed-off-by: Karl Hiramoto <karl@hiramoto.org>
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Moved common code in src/ used by CLI tools to src/lib/ for possible use
by other CLI tools. Just link to libnl-cli.{so|la}
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Signed-off-by: Patrick McHardy <kaber@trash.net>
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commit e92539843a0c7e5116254382626cce226bf2135e
Author: Patrick McHardy <kaber@trash.net>
Date: Thu Oct 23 13:46:16 2008 +0200
libnl: nfqueue: add nfqueue specific socket allocation function
nfqueue users usually send verdict messages from the receive callback.
When waiting for ACKs, the receive callback might be called again
recursively until the stack blows up.
Add a nfqueue specific socket allocation function that automatically
disables ACKing for the socket.
Signed-off-by: Patrick McHardy <kaber@trash.net>
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Converts all tools to the API changes and improves the useability by
introducing regular options and long options.
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Signed-off-by: Patrick McHardy <kaber@trash.net>
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