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of it everywhere
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This patch adds vxlan rtnl attributes to sd-rtnl
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This patch enables vti tunnel support.
example conf:
file : vti.netdev
[NetDev]
Name=vti-tun
Kind=vti
MTUBytes=1480
[Tunnel]
Local=X.X.X.X
Remote=X.X.X.X
file: vti.network
[Match]
Name=em1
[Network]
Tunnel=vti-tun
TODO:
Add more attributes for vti tunnel
IFLA_VTI_IKEY
IFLA_VTI_OKEY
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This patch enables gre tunnel support.
example conf:
file : gre.netdev
[NetDev]
Name=gre-tun
Kind=gre
MTUBytes=1480
[Tunnel]
Local=X.X.X.X
Remote=X.X.X.X
file: gre.network
[Match]
Name=em1
[Network]
Tunnel=gre-tun
TODO:
Add more attributes for gre tunnel
IFLA_GRE_IFLAGS
IFLA_GRE_IFLAGS
IFLA_GRE_IKEY
IFLA_GRE_OKEY
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This patch enables basic ipip tunnel support.
It works with kernel module ipip
example conf:
file: ipip.netdev
[NetDev]
Name=ipip-tun
Kind=ipip
MTUBytes=1480
[Tunnel]
Local=192.168.223.238
Remote=192.169.224.239
TTL=64
file: ipip.network
[Match]
Name=em1
[Network]
Tunnel=ipip-tun
[tomegun:
- drop unused variable
- take ref when enslaving]
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Reuse the auth-checking for both the peek and the real read.
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No functional change.
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The bitmask is deprecated in the kernel, so move to the new interface. At the moment
this does not make a difference for us, but it avoids having to change the API in the future.
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We were not properly clearing the padding at the front of some containers.
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when processing multi-part message
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If nothing interesting was receieved we should not put anything on
the queue.
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Also, don't actually read any of the message when peeking, just get its length.
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Rather than allocating/freeing memory for each message read, keep a global read buffer
in the rtnl object. Also, rather than using a fixed size, peek at the pending message
header to get the message size and reallocate as necessary.
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messages
This means the API can stay the same as for single-part messages by simply passing the head message around. Unrefing
the head of the linked list unrefs the whole list.
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This unifies the socket handling with other sd-* libraries.
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We still only return the first message part in callback/synchronous calls.
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Reported-by: Arnaud Gaboury <arnaud.gaboury@gmail.com>
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This patch fixes the broken test-cases for sd-rtnl and add support for ipip
and sit tunnel.
[tomegun: minor fixups]
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Currently when both ipv4ll and dhcp are enabled, ipv4ll
address (if one has been claimed) is removed when dhcp
address is aquired. This is not the best thing to do
since there might be clients unaware of the removal
trying to communicate.
This patch provides a smooth transition between ipv4ll
and dhcp. If ipv4ll address was claimed [1] before dhcp,
address is marked as deprecated. Deprecated address is still
a valid address and packets can be received on it but address
cannot be selected as a source address. If dhcp lease cannot
be extended, then ipv4ll address is marked as valid again.
[1] If there is no collision, claiming IPv4LL takes between 4 to
7 seconds.
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Also fix type parameter passed to new0
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Reported by Thomas Hindoe Paaboel Andersen <phomes@gmail.com>
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We will easily get these when running on newer kernels. However, we can safely ignore them as we
anyway don't know what to do with them.
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Use a static table with all the typing information, rather than repeated
switch statements. This should make it a lot simpler to add new types.
We need to keep all the type info to be able to create containers
without exposing their implementation details to the users of the library.
As a freebee we verify the types of appended/read attributes.
The API is extended to nicely deal with unions of container types.
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The object is not currently used, so just drop the refenence. If/when we end up
using the object in the future, we must make sure to deal with possible mutual
references between rtnl busses and their queued messages; as is done in sd-bus.
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Added support for tunneling netlink attrributes (ipip, gre, sit).
These works with kernel module ipip, gre and sit . The test cases are
moved to a separate file and manual test as well because they require
respective kernel modules as well.
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Currently we only support containers in RTM_*LINK messages.
Reported-by: "Thomas H.P. Andersen <phomes@gmail.com>"
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These tests were both broken and redundant, so let's drop them.
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Extend rta_offset_tb into a stack of offset tables, one for each parent of the
current container, and make sd_rtnl_message_{enter,exit}_container() pop/push
to this stack.
Also make sd_rtnl_message_rewind() parse the top-level container, and use this
when reading a message from the socket.
This changes the API by dropping the now redundant sd_rtnl_message_read()
method.
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CLOCK_BOOTTIME_ALARM, too
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Make sure the returned data fits the datatype we requested. Otherwise return -EIO.
Also fix a broken test that this exposed.
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If a message type occurs repeatedly let the last one win.
Also, don't skip type == MAX.
Based on patch from: Susant Sahani <susant@redhat.com>
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Like sd-bus, sd-rtnl can have self-references through queued messages. In
particular, each queued message has the following self-ref loop:
rtnl->wqueue[i]->rtnl == rtnl
Same is true for "rqueue".
When sd_rtnl_unref() gets called, we must therefore make sure we correctly
consider each self-reference when deciding to destroy the object. For each
queued message, there _might_ be one ref. However, rtnl-messages can be
created _without_ a bus-reference, therefore we need to verify the
actually required ref-count.
Once we know exactly how many self-refs exist, and we verified none of the
queued messages has external references, we can destruct the object.
We must immediately drop our own reference, then flush all queues and
destroy the bus object. Otherwise, each sd_rtnl_message_unref() call would
recurse into the same destruction logic as they enter with the same
rtnl-refcnt.
Note: We really should verify _all_ queued messages have m->rtnl set to
the bus they're queued on. If that's given, we can change:
if (REFCNT_GET(rtnl->n_ref) <= refs)
to
if (REFCNT_GET(rtnl->n_ref) == refs)
and thus avoid recalculating the required refs for each message we
remove from the queue during destruction.
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