- parse IFLA_IFALIAS if available
- provides API to access/change ifalias
rtnl_link_get_ifalias(link)
rtnl_link_set_ifalias(link, alias)
- extends nl-link-set to test functionality
Manually editing etc/libnl/classid before adding tc objects is a pain.
This patch adds code to attempt auto generating a unique tc id which
will then be assigned to the provided name and added to the classid
file.
This will make the following commands work with prior definitions of
the names "top" and "test"
sudo sbin/nl-qdisc-add --dev eth0 --parent root --id top htb
sudo sbin/nl-class-add --dev eth0 --parent top --id test htb --rate 100mbit
It will generate the following ids automatically:
4001: top
4001:1 test
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>
- Fixes a bunch of bugs related to ematches
- Adds support for the nbyte ematch
- Adds a bison/flex parser for ematch expressions, expressions
may look like this:
ip.length > 256 && pattern(ip6.src = 3ffe::/16)
documenation on syntax follows
- adds ematch support to the basic classifier (--ematch EXPR)
This patch includes various bugfixes in the packet location parser.
Namely it removes two memory leaks if parsing fails. The parser is
correctly quit if an allocation error occurs and it is no longer
possible to add duplicates.
It removes the possibility to differ between net and host byteorder.
This is better done in the actual classifiers as it makes more sense
to specify this together with the value to compare against.
The patch also extends the API to add new packet locations via
rtnl_pktloc_add().
It introduces reference counting, therefore you now have to give
back packet locations with rtnl_pktloc_put() after looking them up
with rtnl_pktloc_lookup(). But you are allowed to keep using them
if the packet location file has been reread.
The packet location file now also understands "eth", "ip", and
"tcp" for "link", "net", and "transport".
A --list option has been added to nl-pktloc-lookup to list all
packet location definitions
A --u32=VALUE option has been added to let nl-pktloc-lookup print
the definition in iproute2's u32 selector style.
A manual page has been written for nl-pktloc-lookup.
Finally, nl-pktloc-lookup has been made installable.
So far all common tc atttributes were accessed via specific functions, i.e.
rtnl_class_set_parent(), rtnl_qdisc_set_parent(), rtnl_cls_set_parent()
which implied a lot of code duplication. Since all tc objects are derived
from struct rtnl_tc and these common attributes are already stored in there
this patch removes all type specific functions and makes rtnl_tc_* attribute
functions public.
rtnl_qdisc_set_parent(qdisc, 10);
becomes:
rtnl_tc_set_parent((struct rtnl_tc *) qdisc, 10);
This patch also adds the following new attributes to tc objects therefore
removing them as tc specific attributes:
- mtu
- mpu
- overhead
This allows for the rate table calculations to be unified as well taking into
account the new kernel behavior to take care of overhead automatically.
Dumping objects as environment variables has never been implemented
completely and only increases the size of the library for no real
purpose. Integration into scripts is better achieved by implementing
a python module anyway.
Adds a cli based tool to add/update traffic classes. This tool requires
each class to be supported via the respetive qdisc module in
pkglibdir/cli/qdisc/$name.so.
Syntax:
nl-class-add --dev eth2 --parent 1: --id 1:1 htb --rate 100mbit
nl-class-add --update --dev eth2 --id 1:1 htb --rate 200mbit
A database to resolve qdisc/class names to classid values and vice versa.
The function rtnl_tc_handle2str() and rtnl_tc_str2handle() will resolve
names automatically.
A CLI based tool nl-classid-lookup is provided to integrate the database
into existing iproute2 scripts.
Adds a cli based tool to add/update/replace qdiscs. This tool requires
each qdisc to be supported via a dynamic loadable module in
pkglibdir/cli/qdisc/$name.so.
So far HTB and blackhole have been implemented.
Syntax:
nl-qdisc-add --dev eth2 --parent root --id 1: htb --r2q=5
nl-qdisc-add --update-only --dev eth2 --id 1: htb --r2q=10
This patch enables out-of-source builds like this
$ cd builddir && src_dir/configure && make
Before this patch there was an error about missing netlink/version.h which
is built by automake in top_builddir rather than top_srcdir which is already
in include search path.
Signed-off-by: Andreas Bießmann <biessmann@corscience.de>
When an alternate kernel header include directory is added in
CPPFLAGS, the libnl build fails. This is because the local copy of
kernel headers is added in AM_CFLAGS, which gets included after
CPPFLAGS in the automake-generated makefile. Switching to AM_CPPFLAGS
fixes the problems.
* 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 verdict,
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>
libnl-route must be handled before libnl-nf in lib_LTLIBRARIES since
the later depends on the former. Additionally nf-monitor, nl-list-caches,
nl-list-sockets and nl-util-addr have been dropped from the Makefile.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Issues solved:
* PACKAGE_VERSION was abused for SOVERSION
* unneeded DEP stage
* did not support out-of-tree builds
* no way to turn off silent mode
* overriding CFLAGS at make time was not supported
* no static libs were provided
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
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>
This changesets adds the possibility to fill a nl_cache with
the contents of the route cache. It also adds the possibility
to limit route caches to certain address families.
