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Currently, when IPFIX records generation is enabled for an interface in
the TX direction, some rewritten traffic is being sent from that
interface, and the Ethernet header's location has changed due to
rewriting, generated TX flows will contain fields with wrong and zero
values. For example, that can be observed when traffic is rewritten from
a subinterface to a hardware interface (i.e. when tags are removed). A
TX flow generated in this case will have wrong L2 fields because of an
incorrectly located Ethernet header. And zero L3/L4 fields because the
Ethernet type will match neither IP4 nor IP6.
The same code is executed to generate flows for both input and output
features. And the same mechanism is applied to identify the Ethernet
header in the buffer's data. However, such general code usually works
with the buffer's data conditionally based on the direction. For most
input features, the buffer's current_data will likely point to the IP
header. For most output features, the buffer's current_data will likely
point to the Ethernet header.
With this fix:
- Keep relying on ethernet_buffer_get_header() to locate the Ethernet
header for input features. And start using vlib_buffer_get_current()
to locate the Ethernet header for output features. The function will
account for the Ethernet header's position change in the buffer's
data if there is rewriting.
- After fixing Ethernet header determination in the buffer's data,
L3/L4 fields will contain non-zero but still incorrect data. That is
because IP header determination needs to be fixed too. It currently
relies on the fact that the Ethernet header is always located at the
beginning of the buffer's data and that l2_hdr_sz can be used as an
IP header offset. However, this may not be the case after rewriting.
So start calculating the actual offset of the IP header in the
buffer's data.
- Add a unit test to cover the case.
Type: fix
Change-Id: Icf3f9e6518912d06dff0d5aa48e103b3dc94edb7
Signed-off-by: Alexander Chernavin <achernavin@netgate.com>
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Do not force cleanup of tcp half-open connection if tcp's cleanup
notification to tls is pending.
Type: fix
Signed-off-by: Florin Coras <fcoras@cisco.com>
Change-Id: I7bccbe8429a4aab10df1c89b66138b967e04ac19
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Updated the gtpu plugin code to support the PDU Session user plane protocol, required for 5G, as
specified in 3GPP TS 38.415 version 17.0.0. This enables some initial support of 5G gNodeB's with
the gtpu plugin.
New features:
- Basic support for the GTP-U Extension Header Flag.
Packets with one extension can now be decapsulated.
This enables basic support of the PDU Session user plane protocol (3GPP TS 38.415 version 17.0.0).
New tunnels can be created with a PDU enable flag and a 6-bit QoS Flow Identifier (QFI).
With this, encapsulated packets will have the PDU Session extension header, and the QFI set.
- Ability to forward GTP-U packets that are not handled by the plugin directly.
Only GTP-U packets with a message type of 255 (G-PDU) are handled directly.
However, 3GPP TS 29.281 defines several other message types like echo and error indication.
A new feature is added to optionally forward unknown or unsupported packets to a new IP address.
This works separately for unknown GTP-U message types, unknown TEIDs, and packets with an unknown
GTP-U header.
This allows both echo and error indications from a 5G gNodeB to be handled by a different system
outside VPP.
- Simple way to get metrics for active tunnels and on tunnel close.
In 5G session/tunnel lifetime is often short and created frequently.
The normal API becomes too slow and inaccurate when too many tunnels are created and deleted
every second.
Improvements:
- A clean ground structure to handle multiple message type in the future.
The code path for G-PDU packets is optimized for performance, representing the typical case.
Unsupported GTP-U packets enter a slow path that decodes the nature of the error.
This presents a easy hook to handle other message types in the future.
- Improved error reporting
When using traces there is more details in the tunnel descriptions.
- Updated the API with several enums.
Fixes:
- gtpu0->length field in IPv6 was computed with IPv4 header lengths in the encapsulation code.
- vec_set_len (t->rewrite, ...) size was computed with the IPv4 header size also for IPv6 tunnels.
Issues:
- This PR does not enable full support of the 3GPP specification.
In particular it only supports a single QoS/QFI flow for each tunnel.
It ignores all incoming extension header flags.
- API functions might change again when/if more support of the 3GPP TS 38.415 spec is added.
Note that I have bumped the API version to 2.1.0 as it seems to be the correct approach based on
my API changes.
Type: feature
Signed-off-by: Rune E. Jensen <runeerle@wgtwo.com>
Change-Id: I91cd2b31f2561f1b3fb1e46c4c34a5a3c71b4625
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Type: improvement
Change-Id: Ie5fcaa706ab0995e0021cf1ee74b95c5a3b30283
Signed-off-by: Damjan Marion <damarion@cisco.com>
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- notify app on failed connect
- avoid cleanup of ctx before transport cleanup to be able to handle
pending rx notifications.
Type: fix
Signed-off-by: Florin Coras <fcoras@cisco.com>
Change-Id: I1b70ad45109d4c942afa1990dfce4fc44a50a637
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In some anti-replay, some functions weren't using the boolean
telling if the window was huge or not. Hence, limiting the constant
propagation at compilation.
Type: fix
Change-Id: Ie5f2dda38339bb32113c6f7b2b82c82135fc92a8
Signed-off-by: Maxime Peim <mpeim@cisco.com>
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Make sure underlying transport connection is not removed on rescheduled
read event.
Type: fix
Signed-off-by: Florin Coras <fcoras@cisco.com>
Change-Id: I0137a2e43aa84d9442279e036c25771aeefd207f
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Change-Id: If380e4ab6ca30243137fd31fbe51845c0414721a
Type: improvement
Signed-off-by: Damjan Marion <damarion@cisco.com>
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Type: improvement
Change-Id: I4a0578598182339bcf76e6b01da76b590a06f773
Signed-off-by: Damjan Marion <damarion@cisco.com>
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af_packet does not process data until the interface is UP. If after interface creation, but before it is UP, the host interfaces are flooded, then blocking case may occur - VPP interface will never be able to process the data.
If the EDGE_TRIGGERED flag is set, the event will not arrive, because nothing new is happening anymore (probably because the queue is already full).
Therefore, we need to use LEVEL_TRIGGERED (default value), which indicates that there is still unprocessed data (accumulated after interface creation, but before it was UP).
Type: fix
Signed-off-by: Artem Glazychev <artem.glazychev@xored.com>
Change-Id: Ied459fd194149d09f226bcb0a5907b3e327b148a
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As a result of recent fixes, all currently stored flows of an interface
are deleted when the feature is being disabled for the interface. This
includes stopping the timer and freeing the flow entries for further
reuse. The problem is that meta information is not cleared in the flow
entries being deleted. For example, packet delta count will keep its
value. The next flow that gets one of these pool entries will already
have a non-zero packet count. So the counting of packets will start from
a non-zero value. And incorrect packet delta count will be exported for
that flow.
With this fix, clear meta information too when clearing interface state.
Also, update the corresponding test to cover this case.
Type: fix
Change-Id: I9a73b3958adfd1676e66b0ed50f1478920671cca
Signed-off-by: Alexander Chernavin <achernavin@netgate.com>
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The array bounds and string overread check on GCC 12 report a dozen of
false positives that result in VPP build failures on ubuntu 22.04.
Work around this build issue by unconditionally disabling these two
warnings if C compiler is GCC 12 or newer version.
Type: fix
Signed-off-by: Jieqiang Wang <jieqiang.wang@arm.com>
Change-Id: I999e847bb625ebdf3ef5f11b11598c553f306670
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GCC 12 complains about such errors while the code itself looks good.
Type: fix
Signed-off-by: Jieqiang Wang <jieqiang.wang@arm.com>
Change-Id: I021719fdbf7d9bd93a12eac76aeac8cbca13a810
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Change-Id: If9381ae7283488b352a3c22f85732cd56ac6bfd9
Type: fix
Fixes: 9937359, 91ff0e9
Signed-off-by: Damjan Marion <damarion@cisco.com>
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Type: fix
Change-Id: I0de1c51455b0d3958c75ab5626a318ac656adbe7
Signed-off-by: Dengfeng Liu <liudf0716@gmail.com>
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DPDK added new Rx checksum flags[1] to handle cases like the virtual
drivers. Current check of flags is not strict enough for flags like
RTE_MBUF_F_RX_IP_CKSUM_NONE and will always be true no matter the
checksum in packet is good or bad.
Fix this issue by comparing the result of AND operation with the
correspinding Rx checksum flags.
Before this patch, packet trace prints the offload flags as below:
Packet Offload Flags
PKT_RX_IP_CKSUM_GOOD (0x0080) IP cksum of RX pkt. is valid
PKT_RX_IP_CKSUM_NONE (0x0090) no IP cksum of RX pkt.
PKT_RX_L4_CKSUM_GOOD (0x0100) L4 cksum of RX pkt. is valid
PKT_RX_L4_CKSUM_NONE (0x0108) no L4 cksum of RX pkt.
After this patch, packet offload flags would be like:
Packet Offload Flags
PKT_RX_IP_CKSUM_GOOD (0x0080) IP cksum of RX pkt. is valid
PKT_RX_L4_CKSUM_GOOD (0x0100) L4 cksum of RX pkt. is valid
Type: fix
[1] https://github.com/DPDK/dpdk/commit/5842289a546ceb0072bd7faccb93821e21848e07
Signed-off-by: Jieqiang Wang <jieqiang.wang@arm.com>
Change-Id: I3182022d9ccd46b2fc55bb3edfbfac9062ed7c89
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Type: improvement
Change-Id: Ic8e2785bf375882defe5a1d299948d522cdd4895
Signed-off-by: Damjan Marion <damarion@cisco.com>
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Type: fix
Fixes: 599a16b
Change-Id: I954e037ab944028798f9aa2a93f45322c8c7b4bb
Signed-off-by: Damjan Marion <damarion@cisco.com>
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Type: fix
Signed-off-by: Stanislav Zaikin <stanislav.zaikin@46labs.com>
Change-Id: I16b48460b3fcd82bbb89c375402cb2455414d8bb
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Type: improvement
Change-Id: Ie6987736faf7d8a641762e276775da8ee0c03ea4
Signed-off-by: Damjan Marion <damarion@cisco.com>
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Type: improvement
Change-Id: I9b9bb37a0895366b412f042b0e2da5bbdd477325
Signed-off-by: Damjan Marion <damarion@cisco.com>
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Do not add ip header as that's added by tcp output and fix checksum.
Type: fix
Signed-off-by: Florin Coras <fcoras@cisco.com>
Change-Id: I9439acf5c66184af0350b1d4d7406b3feb2e79a1
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Type: feature
Change-Id: I9ae0dbf28b4571a37c568b587b771f90c06f200d
Signed-off-by: Damjan Marion <damarion@cisco.com>
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Type: feature
Change-Id: I20c56e0d3103624407f18365c2bc1273dea5c199
Signed-off-by: Damjan Marion <damarion@cisco.com>
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Type: improvement
Signed-off-by: Florin Coras <fcoras@cisco.com>
Change-Id: I4001f39afde8c33b60c15f74034bcce013fbbf70
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As long as ack and segment are legitimate accept ooo data as we
transition to established.
Type: improvement
Signed-off-by: Florin Coras <fcoras@cisco.com>
Change-Id: I85cdc65d70cb8ae689a9ce9bbe4f86228b1ac533
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Type: fix
Signed-off-by: Florin Coras <fcoras@cisco.com>
Change-Id: I231b319d4d7aa3e17cc8cfe8aaa4762995a5b2c4
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Type: test
Change-Id: Ib320cfb5e20f12614c013a92ac15490f8ca3a7ce
Signed-off-by: Filip Tehlar <ftehlar@cisco.com>
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This fix differentiates UDP and UDP-encapsulated ESP packets processing.
While UDP-encapsulated ESP traffic is processed as IPsec traffic, UDP as
other plain-text protocols is NOT dispatched against SPD policies.
Key logic is taken from RFC 3948, and is based on the fact
that the checksum of UDP packet encapsulating ESP packet must be zero.
Type: fix
Signed-off-by: vinay tripathi <vinayx.tripathi@intel.com>
Change-Id: Ib1b4d240eea8e89f2daf17ec833905f26cdb31bd
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ipsec_esp_packet_process
This inline function is introduced to simplify code readability and allows to splitting of
UDP and ESP processing in the next step.
Type: improvement
Change-Id: Ida4d6abbed141ac74d4d285900777778eb8a5a1d
Signed-off-by: Vinay Tripathi <vinayx.tripathi@intel.com>
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Type: test
Change-Id: Ib809f5a6c9e2f08d87f0070231df04d5f0040ca0
Signed-off-by: Filip Tehlar <ftehlar@cisco.com>
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Change-Id: Ia8b5421cbaaf861ddb3ad7aeca53a077ff18864e
Signed-off-by: Mohammed Hawari <mohammed@hawari.fr>
Type: fix
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Type: improvement
Since RFC4303 does not specify the anti-replay window size, VPP should
support multiple window size. It is done through a clib_bitmap.
Signed-off-by: Maxime Peim <mpeim@cisco.com>
Change-Id: I3dfe30efd20018e345418bef298ec7cec19b1cfc
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Currently, TCP flags of a flow entry don't get reset once the flow is
exported (unlike other meta information about a flow - packet delta
count and octet delta count). So TCP flags are accumulated as long as
the flow is active. When the flow expires, it is exported the last time,
and its pool entry is freed for further reuse. The next flow that gets
this pool entry will already have non-zero TCP flags. If it's a TCP
flow, the flags will keep being accumulated. This might look fine when
exported. If it's a non-TCP flow, that will definitely look erroneous.
With this fix, reset TCP flags once the flow is exported. Also, cover
the reuse case with tests.
Type: fix
Change-Id: I5f8560afffcfe107909117d3d063e8a69793437e
Signed-off-by: Alexander Chernavin <achernavin@netgate.com>
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Type: fix
Signed-off-by: Mohammed Hawari <mohammed@hawari.fr>
Signed-off-by: Florin Coras <fcoras@cisco.com>
Change-Id: Icdff3528fcaf863b400b9aca6c30d284bc17d5f0
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Type: test
Change-Id: Iba94edb7eb439ddc994d9a16cb52108373d052ce
Signed-off-by: Filip Tehlar <ftehlar@cisco.com>
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Type: improvement
Change-Id: I2427e1a93e89e9a7ac884b84352b96cf523ae11e
Signed-off-by: Damjan Marion <damarion@cisco.com>
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Type: test
Change-Id: I8665492c2f7755901a428aacdb27e98329ff557a
Signed-off-by: Filip Tehlar <ftehlar@cisco.com>
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Setting and using the SOURCE_DATE_EPOCH variable takes
care of most of the magic necessary.
https://reproducible-builds.org/docs/source-date-epoch/
vpp-ext-deps packages after this change is being built with that
date set to date of the last modification of the
subtree (similar logic to deriving the "number" for
the package version)
For the rest of the packages, pinning the following
three variables should result in bit-identical
artifacts across multiple runs:
export SOURCE_DATE_EPOCH=$(date +%s)
export VPP_BUILD_HOST="buildhost"
export VPP_BUILD_USER="builduser"
Add a blurb in the docs describing this new functionality.
Type: improvement
Change-Id: I71b085f0577b2358aa98f01dafd8e392239420a6
Signed-off-by: Andrew Yourtchenko <ayourtch@gmail.com>
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Type: fix
Change-Id: I9373dabcdb2c4ba987e732b59e63b52603010873
Signed-off-by: Damjan Marion <damarion@cisco.com>
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Type: fix
Fixes: 8973b07
Change-Id: Iba6e29bab35be0148b469965c3af8391b5ab9140
Signed-off-by: Damjan Marion <damarion@cisco.com>
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Type: fix
Fixes: unknown
Change-Id: I81ee03aaea2e1e6ffb9d6ee91db7fb9acd6debb7
Signed-off-by: Damjan Marion <damarion@cisco.com>
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Type: improvement
If an interface address is added, the glean adjacency for it's covering
prefix is updated with that address. In the case of multiple addresses
within the same prefix being added, the most recently added one will end
up being used as the sender protocol address for ARP requests.
Similar behavior occurs when an interface address is deleted. The glean
adjacency is updated to some appropriate entry under it's covering
prefix. If there were multiple interface addresses configured, we may
update the address on the adjacency even though the address currently in
use is not the one being deleted.
Add a new value PROVIDES_GLEAN to fib_entry_src_flag_t. The flag
identifies whether a source interface entry is being used as the address
for the glean adjacency for the covering prefix.
Update logic so that the glean is only updated on adding an interface
address if there is not already a sibling entry in use which has the
flag set. Also, only update the glean on deleting an interface address
if the address being deleted has the flag set.
Also update unit test which validates expected behavior in the case
where multiple addresses within a prefix are configured on an interface.
Signed-off-by: Matthew Smith <mgsmith@netgate.com>
Change-Id: I7d918b8dd703735b20ec76e0a60af6d7e571b766
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Check if crypto ops vector is matching actual ops instead if blindly
dereferencing it.
Type: fix
Signed-off-by: Dmitry Valter <d-valter@yandex-team.com>
Change-Id: Ib88ab44137d9360ee96228e72349a62b2fa7a7e0
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Currently, when L2 and L4 recording is enabled on the L2 datapath, the
L2 template will contain L4 fields and L2 flows will be exported with
those fields always set to zero.
With this fix, when L4 recording is enabled, add L4 fields to templates
other than the L2 template (i.e. to the IP4, IP6, L2_IP4, and L2_IP6
templates). And export L2 flows without L4 fields. Also, cover that case
in the tests.
Type: fix
Change-Id: Id5ed8b99af5634fb9d5c6e695203344782fdac01
Signed-off-by: Alexander Chernavin <achernavin@netgate.com>
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memif_disconect may be called without barrier sync. It removes stuff in mq
without protection which may cause troubles for memif RX/TX worker threads.
The fix is to protect mq removal in memif_disconnect.
Type: fix
Change-Id: I368c466d1f13df98980dfa87e8442fbcd822a428
Signed-off-by: Steven Luong <sluong@cisco.com>
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Type: improvement
Change-Id: Ie86a5edf2ada21355543e9a0382052b16ff86927
Signed-off-by: Damjan Marion <damarion@cisco.com>
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Type: fix
Signed-off-by: Florin Coras <fcoras@cisco.com>
Change-Id: Ie01d7e8d6eddf3ba88f2cd6eb8369c8ec8179cb4
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Also make sure connection is properly cleaned up.
Type: fix
Signed-off-by: Florin Coras <fcoras@cisco.com>
Change-Id: I02f83e9a1e17cbbbd2ee74044d02049b2fd2f21c
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Type: fix
Signed-off-by: Florin Coras <fcoras@cisco.com>
Change-Id: If74e04498423bed42593e79ec92482421cfda8d2
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