namespace is a keyword for c++ compilers
Type: fix
Change-Id: Ia8fc9ef1cc15fe9d0e40b3f543f9e8f411203b89
Signed-off-by: Stanislav Zaikin <zstaseg@gmail.com>
Type: fix
A user had trouble compiling C++ code to work with the linux-cp APIs
because some messages contain a field called namespace, which is a
reserved word for C++. We wish to rename those fields so the messages
which are affected are being set to in_progress.
Change-Id: I3bd1dc898c146a9980161a562b2b453313bb58fd
Signed-off-by: Matthew Smith <mgsmith@netgate.com>
Type: fix
Don't set link speed for tap interface when link speed is unknown
Signed-off-by: Anton Nikolaev <anikolaev@netgate.com>
Change-Id: Ia97277b3bf7c958fa665e4ead8d0e48f02921e69
Type: fix
Fixes: 616447c392
In lcp_router_link_mtu(), either vnet_hw_interface_set_mtu() or
vnet_sw_interface_set_mtu() is called, based on whether this appears to
be a physical interface. The test to determine whether this is true was
incorrect and probably never worked right so vnet_sw_interface_set_mtu()
was always being called. This causes some breakage with Recent changes
to code which manages interface MTUs. Fix the test so the right function
is called.
Change-Id: I1ecccbce37d5a1e53b2349ed40f3d0d27eb03569
Signed-off-by: Matthew Smith <mgsmith@netgate.com>
Creating tap interface / sub interface causes allocation of a new
software interface with possible sw interface pool reallocation.
In such case accessing L3 MTU and interface flags by obsolete sw
pointer is UAF.
Instead, keep desired tap interface MTU value before sw intreface
creation and refetch sw pointer right before sw flags inheritance.
Type: fix
Fixes: b89c1ddcb3
Signed-off-by: Vladislav Grishenko <themiron@yandex-team.ru>
Change-Id: I21ea46d146d11060bb9bedc77377ab17ae9e22e8
Type: improvement
Currently, the plugin can monitor link state changes on hardware
interfaces for which a linux-cp pair exists. When the link goes down on
one of the hardware interfaces, the plugin processes IPv4 routes that
resolve through that interface according to the configurations:
del-static-on-link-down and del-dynamic-on-link-down.
The problem is that link state changes are not signaled for
subinterfaces and the code that handles IPv4 routes is not triggered.
When the link on a hardware interface goes down, it implies
that subinterfaces added to that interface also will have the link in
the down state.
With this change, when the link goes down on a hardware interface,
iterate over subinterfaces added to the interface and apply the same
logic of routes processing as for hardware interfaces.
Signed-off-by: Alexander Chernavin <achernavin@netgate.com>
Change-Id: I97337d2e328437c73f2d99a00737768778f197a1
Type: improvement
lcp_router_table_flush() is used to remove routes from the given route
table if they are resolved through the given interface with specified
FIB source. Currently, if you need to remove routes from a route table
that are resolved through one of the interfaces from a vector, the
function has to be executed for every interface from the vector. Every
execution walks the route table again.
With this change, lcp_router_table_flush() accepts a vector of
interfaces. Thus, the function can walk a single route table once and
delete routes that resolve through one of the interfaces from the
vector.
Signed-off-by: Alexander Chernavin <achernavin@netgate.com>
Change-Id: I6d99384064d279dea24bb4dc1790a1af943be41c
Format host interface name as vector rather than c-string.
Otherwise non-null-terminated vector overrun triggers ASAN.
Type: fix
Fixes: 1705a6baef
Signed-off-by: Dmitry Valter <d-valter@yandex-team.ru>
Change-Id: Ib204e57ee17c7ed3bfeb568dcdd834d7d7519102
Type: improvement
Currently, when the link goes down on an interface, routes that resolve
through that interface and created with Nexthop API are removed by the
kernel. However, IPv4 routes remain in the FIB because the kernel
doesn't send any notifications about that.
And for the plugin working with user-space applications that create
routes in the kernel using Nexthop API there should be a mechanism to
synchronize the FIB and the kernel in this case.
With this change, add two new startup configuration options to the
plugin to be able to control what should happen with static and dynamic
routes managed by the plugin on link down:
- del-static-on-link-down (disabled by default, delete routes created
with the linux-cp static FIB source on link down),
- del-dynamic-on-link-down (disabled by default, delete routes created
with the linux-cp dynamic FIB source on link down).
Then, monitor link state changes on interfaces for which a linux-cp pair
exists. If the link goes down on one of the interfaces, process routes
that resolve through that interface according to the new configurations.
Signed-off-by: Alexander Chernavin <achernavin@netgate.com>
Change-Id: I0fbaeeca3f3d1fcd22e8eebb08a0a4a3d0dfe5b8
Type: improvement
Currently, when an interface is brought down administratively, IPv4
routes that resolve through that interface remain in the FIB. However,
the kernel removes those routes but doesn't send any notifications about
that. Desynchronization between the kernel and VPP happens.
With this change, when a notification received from the kernel
indicating that an interface was brought down, in addition to bringing
the VPP interface down, walk the IPv4 FIB bound to that interface and
remove any entries that resolve through that interface and were added
with one of the linux-cp FIB sources.
Signed-off-by: Alexander Chernavin <achernavin@netgate.com>
Change-Id: I0cd14bb63c9e6616ae1c5739b17c3bf33b186bc2
Type: fix
Primarily fix an issue reported by Coverity in
lcp_nl_open_sync_socket() that close() could possibly be run with
negative fd. Also, add more checks and error logging there.
Signed-off-by: Alexander Chernavin <achernavin@netgate.com>
Change-Id: I9a88520d068392977a6eba0766451e5652fe512c
Type: improvement
Currently, read event signal is sent on every notification message
received and added in the queue.
With this change, signal read event only when all currently available
notification messages are received.
Signed-off-by: Alexander Chernavin <achernavin@netgate.com>
Change-Id: Ib86d189311ce01f50167e4e97feb99df0292ad96
Type: improvement
Currently, while reading notifications, ENOBUFS error is ignored and
reading continues. This was done to minimize the number of notifications
that are lost due to reopening the socket.
Now that synchronization is implemented to recover from socket errors,
ignoring ENOBUFS and reading as much notifications as possible is not
actual. Before synchronization, all currently enqueued notification are
discarded in any case.
With this change, stop reading notifications if any error occurs.
Signed-off-by: Alexander Chernavin <achernavin@netgate.com>
Change-Id: I1184d9a3aa99df63ef59bc2a67be2b1e5e0e9329
Type: improvement
When dump of neighbors is requested, the replies will also include
neighbor entries for IPv6 multicast addresses:
GigabitEthernet0/8/0 S ff02::16 33:33:00:00:00:16
GigabitEthernet0/8/0 S ff02::1:ff76:7135 33:33:ff:76:71:35
GigabitEthernet0/8/0 S ff02::2 33:33:00:00:00:02
Such entries are not reported in netlink notification messages and
VPP is unlikely to use these.
With this change, ignore neighbor entries when the IP address is a
multicast address.
Signed-off-by: Alexander Chernavin <achernavin@netgate.com>
Change-Id: Ic712aa4904f1d559f31fd89ff4541268e2340f84
Type: improvement
During synchronization, only the current actual set of entries is
loaded. If some entries are no longer present in the set being loaded
but present in VPP, they should be removed to fully syncronize.
With this change, add handlers for sync begin and end events. Begin
handlers will mark the entries as stale. End handlers will remove the
entries that are still marked as stale.
Signed-off-by: Alexander Chernavin <achernavin@netgate.com>
Change-Id: I4f7e872af3e1c9ffa6c63bcc3984ec76def1bb43
Type: improvement
Currently, if an error happens on the netlink notification socket, the
socket gets reopened. A portion of notification messages have been lost
because of this and will never arrive on the socket. VPP will be out of
sync with the kernel networking state.
With this change, synchronize VPP state and the kernel networking state
if there was an error polling or reading the notification socket.
Signed-off-by: Alexander Chernavin <achernavin@netgate.com>
Change-Id: I8cdff89b505cd227535a0acaadb6ee757204c45e
Type: improvement
For some message types, timestamps are checked on netlink message to
decide whether the message should be applied. For notification messages
timestamps are expected to be always available.
With this change, before accessing the timestamp, make sure the message
info object that carries it is not null. If it is null, pass the check.
This is to be ready to process dump replies that will not need the
timestamp check and will have the message info object set to null.
Signed-off-by: Alexander Chernavin <achernavin@netgate.com>
Change-Id: Ic7211c0d451d72f6a5248898b3a8f8e0bca8f7aa
Type: fix
Currently, a tap interface created to be a member of a linux-cp pair has
default link state (down) and default link speed (10Mb/s). Then the
plugin monitors the link state of the paired hardware interface and if
it changes, the new link state is reflected on the tap interface. And
when the new link state is "up", the link speed is also reflected on the
tap interface.
The problem is that this scheme implies that the hardware interface's
link state is "down" at the moment of the linux-cp pair creation and
then changes. But there are cases when the link state is already "up" at
that moment. If that is the case, the link speed on the tap interface
will remain the default one until the link comes down and then comes up.
With this fix, when a linux-cp pair is created, reflect current link
state of the hardware interface being paired on the created tap
interface.
Signed-off-by: Alexander Chernavin <achernavin@netgate.com>
Change-Id: I73664d753f4daaa6d439c9ca898fb7363d21c06d
Some possible side effects for multicast routes appears to be in
lcp_router_table_add_or_lock. so ff00/8 route will be processed
for ospf purposes the right way
Ignore IPv6 kernel routes
Skip adding auto routes into FIB
Type: fix
Signed-off-by: Vladimir Ratnikov <vratnikov@netgate.com>
Change-Id: I35f73d629a7fffca7f7d4547adc2549b72c2048f
Type: fix
otherwise the feature is enabled n times for n lcp-pairs and the packets go n times through the feature.
Signed-off-by: Neale Ranns <neale@graphiant.com>
Change-Id: I8e47e4a293d6e2711f54aa09e9545e5e07728026
Type: fix
Possible negative return in open(), do not use curr_ns_fd if it is
negative. Addresses Coverity issue 248535
Signed-off-by: Pim van Pelt <pim@ipng.nl>
Change-Id: I8429ede0f1fe9fe6619e3c4dbd83adb620ea62c2
Type: feature
please see FEATURE.yaml for details.
Signed-off-by: Neale Ranns <nranns@cisco.com>
Signed-off-by: Matthew Smith <mgsmith@netgate.com>
Signed-off-by: Jon Loeliger <jdl@netgate.com>
Signed-off-by: Pim van Pelt <pim@ipng.nl>
Signed-off-by: Neale Ranns <neale@graphiant.com>
Change-Id: I6255fd9953d0b03e6b4fe75b67a6845a7c206f74
Signed-off-by: Pim van Pelt <pim@ipng.nl>
Part 1 -- notes in https://ipng.ch/s/articles/2021/08/13/vpp-2.html
Add the ability for VPP to copy out (sync) its state from the dataplane
to Linux Interface Pairs, when they exist. Gated by a configuration
flag (linux-cp { lcp-sync }), and by a CLI option to toggle on/off,
synchronize the following events:
- Interface state changes
- Interface MTU changes
- Interface IPv4/IPv6 address add/deletion
In VPP, subints can have any link state and MTU, orthogonal to their
phy. In Linux, setting admin-down on a phy forces its children to be
down as well. Also, in Linux, MTU of children must not exceed that of
the phy. Add a state synchronizer which walks over phy+subints to
ensure Linux and VPP end up in the same consistent state.
Part 2 -- notes in https://ipng.ch/s/articles/2021/08/15/vpp-3.html
Add the ability for VPP to autocreate sub-interfaces of existing Linux
Interface pairs. Gated by a configuration flag
(linux-cp { lcp-auto-subint }), and by a CLI option to toggle on/off,
synchronize the following event:
- Sub-interface creation (dot1q, dot1ad, QinQ and QinAD)
A few other changes:
- Add two functions into netlink.[ch] to delete ip4 and ip6 addresses.
- Remove a spurious logline (printing MTU) in netlink.c.
- Resolve a TODO around vnet_sw_interface_supports_addressing()
Type: improvement
Signed-off-by: Pim van Pelt <pim@ipng.nl>
Change-Id: I34fc070e80af4013be58d7a8cbf64296cc760e4e
Signed-off-by: Pim van Pelt <pim@ipng.nl>
This adds a create_tap_v3 api that has a num_tx_queues
parameter allowing to create more than num_workers queues,
following on multi TX support
Type: feature
Change-Id: Idce433147e8dd165f842241d6c76e041e1b1c9b8
Signed-off-by: Nathan Skrzypczak <nathan.skrzypczak@gmail.com>
Type: fix
This only happens when the user deletes the physical before they delete the pair, that's not supoosed to be the case, but don't crash if it is.
Signed-off-by: Neale Ranns <neale@graphiant.com>
Change-Id: I8c2317b360d897775dde23833d04430f88531cbd
Linux Control Plane interface creation logic is currently only able to
create untagged interfaces, and dot1q VLAN sub-interfaces. This change
makes it possible to create dot1ad VLAN sub-ints, and Q-in-AD as well
as Q-in-Q sub-interfaces as well.
It makes the plugin a bit more robust by catching a few common errors,
such as creating an lcp on a sub-interface without its parent having
one, and creating an lcp on a sub-interface that is not exact-match.
This change has a bunch of smaller improvemnets as well. I documented
my work in this post:
https://ipng.ch/s/articles/2021/08/12/vpp-1.html
It shows that after the change is merged, all VPP interface types now
create and operate cleanly as LCP interfaces as well.
Type: improvement
Signed-off-by: Pim van Pelt <pim@ipng.nl>
Change-Id: I322669f7316d44c227090b83d6a574fb9c00e76a
* Add clib_socket_init support for abstract sockets
if name starts with an '@'
* Add clib_socket_init_netns to open socket in netns
* Add clib_netns_open
Type: feature
Change-Id: I89637ad657c702ec38ddecb5c03a1673d0dfb104
Signed-off-by: Nathan Skrzypczak <nathan.skrzypczak@gmail.com>
Type: fix
Outbound packets which arrive on tun/L3 interfaces use a default
adjacency for the interface & address family from the corresponding
interface pair. However, there are entries in the linux-cp adj table
that are created for them. Managing these entries might cause a
segfault because the rewrite data might exceed the reserved space for
it of 28 bytes in the linux-cp adj key (e.g. in case of GRE IPv6).
With this change, stop creating adjacencies for tun/L3 interfaces in
the linux-cp adj table and delegating them.
Signed-off-by: Alexander Chernavin <achernavin@netgate.com>
Change-Id: I4bcd685860053ab87c65064c182e3ed53fd4fae9
Type: improvement
Allow callbacks to be registered which will be called when an
interface pair is added or deleted.
Change-Id: I1c413ac2ada802021f9e56e2f878ce67e5eda2f5
Signed-off-by: Matthew Smith <mgsmith@netgate.com>
Type: fix
Outbound packets from the host have an adjacency lookup performed so
buffer metadata can be filled in and output features can be applied.
If no adjacency is found for a packet, it gets dropped. This breaks
DHCP and possibly other things since the DHCP reply to a discover
request is sent to a destination MAC address that is determined by
the contents of the request packet rather than any existing neighbor
table entry.
If adjacency lookup for outbound packets does not find an entry, use
the default adjacency for the interface & address family.
Change-Id: Ia53a4df3a5bad2991768cfe4a84c560b879e656f
Signed-off-by: Matthew Smith <mgsmith@netgate.com>
Type: improvement
When an adjacency is created, add the linux-cp delegate on the new
adjacency so we can later deal with modifications & deletions in our
cache of adjacency data.
Add a pool of hash keys and associate the pool index for a particular
key with the adj_delegate_t. If the rewrite on an adjacency is changed,
this will allow us to delete the old hash table entry and it will not
become orphaned.
Signed-off-by: Matthew Smith <mgsmith@netgate.com>
Change-Id: I072b960c02cf377d66f7d18b8c0e9e05824a0ca3
- Generate copyright year and version
instead of using hard-coded data
Type: refactor
Signed-off-by: Dave Wallace <dwallacelf@gmail.com>
Change-Id: I6058f5025323b3aa483f5df4a2c4371e27b5914e
lip_host_name is a non-NULL terminated vector, not a NULL-terminated
C-string.
Type: fix
Change-Id: Ie5da59bc5680be72251904467d77b18263c882f8
Signed-off-by: Benoît Ganne <bganne@cisco.com>
Type: fix
If no host interface name is passed to the CLI command which creates
an interface pair, NULL gets passed to lcp_itf_pair_create() and a
seg fault occurs. Check whether a host interface name was provided
and fail gracefully if none was given.
Change-Id: I82886f4c2ee710e206c751c34a74399112e9062c
Signed-off-by: Matthew Smith <mgsmith@netgate.com>
Type: feature
please see FEATURE.yaml for details.
Signed-off-by: Neale Ranns <nranns@cisco.com>
Signed-off-by: Matthew Smith <mgsmith@netgate.com>
Signed-off-by: Jon Loeliger <jdl@netgate.com>
Signed-off-by: Pim van Pelt <pim@ipng.nl>
Change-Id: I04a45c15c0838906aa787e06660fa29f39f755fa
