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This clarifies the seperation between public and private
header files.
Signed-off-by: Thomas Graf <tgraf@suug.ch>
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commit f20bbe1f07fcff1509425884f5ed72ca8d5fb6ab
Author: Thomas Graf <tgraf@suug.ch>
Date: Tue Jan 22 19:10:38 2013 +0100
No longer install module API headers
This commit causes a regression so no app using libnl can be compiled
against it. This patch fixes it by removing includes of no-longe
existing headers.
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: Thomas Graf <tgraf@suug.ch>
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The kernel allows multiple entries in the main table which differ in the
priority value. In libnl currently, since priority is not part of the base
netlink route message, it is not used as part of the key. This patch
includes priority in the key/oo_id_attrs and defaults the value to zero
for messages where priority is not included.
One point to note is that the actual selection of route from multiple
options is done implicitly in the kernel by storing the routes in sort
priority order, but there is no explicit communication to a client of libnl
of that.
Signed-off-by: Shrijeet Mukherjee <shm@cumulusnetworks.com>
Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: Thomas Graf <tgraf@suug.ch>
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Signed-off-by: Thomas Graf <tgraf@suug.ch>
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Various header files providing an API to implement own cache and
object types or implement link types have been available in the
past. Their API is marked unstable in the documentation and nobody
is using them so far.
Technically they have been causing ABI breakages in at least two
3.2.x releases. In order to avoid future accidental breakage, no
longer install these and require module developers to clone the
git tree and build modules off the git tree directly to make sure
that the API is unstable at this point.
Signed-off-by: Thomas Graf <tgraf@suug.ch>
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The soname was bumped before 3.2.18 was released to reflect
an ABI change in the cache and object API.
This caused a discussion with various distribution maintainers
involved as it prevented them from including the release in
their stable branches. This is especially unfortunate as the
corresponding API is unused outside of libnl as of now.
For this reason, I have decided to undo the soname bump and
instead remove the corresponding header files from the list of
installable headers and thus remove them from the public API.
This is a API break technically but since nobody is using
them it should not matter. If you are in fact using any of the
*-api.h headers please let me know and we are most likely to
start a new development branch.
If your application linked against 3.2.18 or 3.2.19 you will need
to relink if you want it to use >= 3.2.20.
Signed-off-by: Thomas Graf <tgraf@suug.ch>
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Signed-off-by: Thomas Graf <tgraf@suug.ch>
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Today the link compare function does not
compare af data of a link. We have found a
need for this to get approriate change callbacks
when af_data of a link changes.
This patch adds support to compare af_data
to link_compare function. This patch today
only adds support to compare af_data set by
PROTINFO attributes. It can be extended to
support compares of af_data set by AF_SPEC
attributes
It has been tested for AF_BRIDGE objects.
In case of AF_BRIDGE objects, this helps with
bridge port change notification callbacks.
Signed-off-by: Wilson Kok <wkok@cumulusnetworks.com>
Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: Thomas Graf <tgraf@suug.ch>
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This patch adds a new api rtnl_linl_af_data_compare to
compare link af_data
Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: Thomas Graf <tgraf@suug.ch>
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This patch adds support for ao_compare operation
to bridge link af data operations.
Adds field ce_mask to struct bridge_data to work
with the ATTR attributes. I can submit separate
patches to introduce mask field to ATTR macros.
Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: Wilson Kok <wkok@cumulusnetworks.com>
Signed-off-by: Thomas Graf <tgraf@suug.ch>
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This patch adds new operation to compare link af_data.
ao_compare is similar to object oo_compare operation.
This op can be used when two links are compared
for their af data. It takes two link objects in
question, an object specific bitmask defining which
attributes should be compared and flags to control
the behaviour. The function must return a bitmask
with the relevant bit set for each attribute that mismatches.
Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: Thomas Graf <tgraf@suug.ch>
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This patch adds new cache find api
nl_cache_find api was suggested by Thomas.
Unlike nl_cache_search, this patch uses
nl_object_match_filter() to look for an
object match.
Am not sure this matches what was decided
on the list few weeks back. I will be happy
to make any changes.
Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: Thomas Graf <tgraf@suug.ch>
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Signed-off-by: Flavio Leitner <fbl@redhat.com>
Signed-off-by: Thomas Graf <tgraf@suug.ch>
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Signed-off-by: Thomas Graf <tgraf@suug.ch>
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The header has not been included in the headers list so it has been
been distributed in the tarball making it fail to build in old kernels.
Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
Signed-off-by: Thomas Graf <tgraf@suug.ch>
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In cache_include(), the user callback is used even though one might not
have been specified, leading to a crash. This happens, for example, when
NetworkManager calls nl_cache_include() with the change_cb argument set
to NULL. Fix it by making sure the callback points to a valid address.
Signed-off-by: Mihai Dontu <mihai.dontu@gmail.com>
Signed-off-by: Thomas Graf <tgraf@suug.ch>
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Signed-off-by: Thomas Graf <tgraf@suug.ch>
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The nlmsg_ok macro has a comparison between an int and a size_t
(unsigned int). The C spec says the int is cast to unsigned int before
the comparison. This is a problem as the audit system will send skb's
with skb->len == nlhhdr->nlmsg_len which are NOT aligned. Thus you can
end up with remaining being negative. So the comparison becomes
(unsigned int)(-1) >= (unsigned int)16
Which turns out to be true! It should clearly be false. So if we cast
the size_t to an int we get a signed comparison and it works. (This is
what linux/netlink.h and all of the kernel netlink headers do)
Signed-off-by: Eric Paris <eparis@redhat.com>
Signed-off-by: Thomas Graf <tgraf@suug.ch>
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Detected by cppcheck
Signed-off-by: Thomas Jarosch <thomas.jarosch@intra2net.com>
Signed-off-by: Thomas Graf <tgraf@suug.ch>
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Signed-off-by: Thomas Graf <tgraf@suug.ch>
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This patch adds search and replace/update functionality
to cache pickup_cb. This change is required to avoid
duplicates getting into the cache during pickup. Also
helps updating existing objects during cache pickup.
We have seen this in cases of ipv6 equal cost multipath
routes
changes v1 to v2:
- Updated documentation
Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>
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Signed-off-by: Thomas Graf <tgraf@suug.ch>
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The current code does a rtnl_link_put on new object instead of
old object. This patch fixes it. None of the caches have support
for object update, so this should not have affected anyone yet.
Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>
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There are two ways kernel handles ipv6 equal cost multipath routes
depending on which kernel version you are looking at.
older kernels without ipv6 ECMP support, accept the below ECMP routes,
#ip -6 route add 2001::/16 nexthop via fe80:2::2 dev swp1
#ip -6 route add 2001::/16 nexthop via fe80:2::3 dev swp1
store them as separate routes and pick the last one during lookup.
Newer kernels, after the support for equal cost multipath routes
was added http://patchwork.ozlabs.org/patch/188562/,
now accept multipath routes added individually using the
above 'ip -6 route' format OR
sent using RTA_MULTIPATH with the below command
#ip -6 route add 2001::/16 nexthop via fe80:2::2 dev swp1 nexthop via fe80:2::3 dev swp1
And the kernel now stores and treats them as equal cost multipath routes
during lookups.
However in all cases above, netlink notifications to ipv6 ECMP route adds and deletes
come separately for each next hop.
Example libnl notification in the above case with both old and new kernels:
inet6 2001::/16 table main type unicast
scope global priority 0x400 protocol boot
nexthop via fe80:2::2 dev swp1
inet6 2001::/16 table main type unicast
scope global priority 0x400 protocol boot
nexthop via fe80:2::3 dev swp1
Since they are separate route notifications for objects with same key,
libnl replaces the existing ones and hence only the last route update sticks.
This patch uses the oo_update feature to not replace but update an
existing route if its a ipv6 equal cost multipath route.
The object after an update looks like the below (similar to ipv4 ECMP routes):
inet6 2001::/16 table main type unicast
scope global priority 0x400 protocol boot
nexthop via fe80:2::2 dev swp1
nexthop via fe80:2::3 dev swp1
Signed-off-by: Shrijeet Mukherjee <shm@cumulusnetworks.com>
Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Reviewed-by: Nolan Leake <nolan@cumulusnetworks.com>
Reviewed-by: Wilson Kok <wkok@cumulusnetworks.com>
Signed-off-by: Thomas Graf <tgraf@suug.ch>
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Needed to NF_CT_EXPECT_PERMANENT etc.
Signed-off-by: Thomas Graf <tgraf@suug.ch>
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Signed-off-by: Thomas Graf <tgraf@suug.ch>
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Signed-off-by: Gilles Espinasse <g.esp@free.fr>
Signed-off-by: Thomas Graf <tgraf@suug.ch>
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Signed-off-by: Gilles Espinasse <g.esp@free.fr>
Compiling libnl versions that include doc or the git tree produce this
checking for python build information...
checking for python2.6... python2.6
checking for main in -lpython2.6... yes
checking python2.6/Python.h usability... yes
checking python2.6/Python.h presence... yes
checking for python2.6/Python.h... yes
./configure: line 4272: test: !=: unary operator expected
checking for python2.5... (cached) python2.6
checking for main in -lpython2.6... (cached) yes
checking for python2.6/Python.h... (cached) yes
./configure: line 4272: test: !=: unary operator expected
checking for python2.4... (cached) python2.6
checking for main in -lpython2.6... (cached) yes
checking for python2.6/Python.h... (cached) yes
./configure: line 4272: test: !=: unary operator expected
checking for python2.3... (cached) python2.6
checking for main in -lpython2.6... (cached) yes
checking for python2.6/Python.h... (cached) yes
./configure: line 4272: test: !=: unary operator expected
checking for python2.2... (cached) python2.6
checking for main in -lpython2.6... (cached) yes
checking for python2.6/Python.h... (cached) yes
./configure: line 4272: test: !=: unary operator expected
checking for python2.1... (cached) python2.6
checking for main in -lpython2.6... (cached) yes
checking for python2.6/Python.h... (cached) yes
./configure: line 4272: test: !=: unary operator expected
checking for python... (cached) python2.6
checking for main in -lpython2.6... (cached) yes
checking for python2.6/Python.h... (cached) yes
./configure: line 4272: test: !=: unary operator expected
results of the Python check:
Binary: python2.6
Library: python2.6
Include Dir: no
Fix the unary operator warning allow to break when one python version is found
Add the more recent python versions
Change send upstream as http://savannah.gnu.org/patch/index.php?7897
Signed-off-by: Thomas Graf <tgraf@suug.ch>
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Add helper functions to make socket-CAN configuration easy.
Signed-off-by: Benedikt Spranger <b.spranger@linutronix.de>
Signed-off-by: Thomas Graf <tgraf@suug.ch>
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Controller Area Network (CAN) is a networking technology which has
widespread use in automation, embedded devices and automotive fields.
The socket-CAN package is an implementation of CAN protocols for Linux.
All socket-CAN related configurations are carried out through Netlink.
Add basic socket-CAN support to libnl to be able to configure CAN devices
with libnl.
Signed-off-by: Benedikt Spranger <b.spranger@linutronix.de>
Signed-off-by: Thomas Graf <tgraf@suug.ch>
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This is an addendum to 0a9d5fcfa4c3fe8c930103f7639723dfd1ae4889,
which forgot to change ${LEX} to ${FLEX} in lib/Makefile.am.
On openSUSE, /usr/bin/lex is a wrapper that calls `flex -l ...`.
libnl however requires flex, not lex or a compat mode thereof,
so using ${FLEX} is the proper thing to do.
Signed-off-by: Jan Engelhardt <jengelh@inai.de>
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This is the magic trick to get rid of files like NEWS, INSTALL,
etc. that are unused in some projects, like libnl.
Signed-off-by: Jan Engelhardt <jengelh@inai.de>
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Stash all those scripts into a separate directory and ignore that.
Signed-off-by: Jan Engelhardt <jengelh@inai.de>
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/usr/share/automake-1.12/am/ltlibrary.am: warning: 'libnl-cli-3.la':
linking libtool libraries using a non-POSIX archiver requires
'AM_PROG_AR' in 'configure.ac'
(one for each .la file)
Signed-off-by: Jan Engelhardt <jengelh@inai.de>
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"configure.in" is a very, very old, obsolete name. Newer automake
will reject it, so rename it now.
Signed-off-by: Jan Engelhardt <jengelh@inai.de>
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A co_groups == NULL must enter the loop to trigger the initial
fill of the cache but may never bump the grp pointer as doing
so prevents the loop from being escaped correctly.
Signed-off-by: Thomas Graf <tgraf@suug.ch>
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Signed-off-by: Thomas Graf <tgraf@suug.ch>
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Signed-off-by: Thomas Graf <tgraf@suug.ch>
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Signed-off-by: Thomas Graf <tgraf@suug.ch>
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Signed-off-by: Thomas Graf <tgraf@suug.ch>
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Fixes issue #7
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