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Change-Id: I2397ada9760d546423e031ad45535ef8801b05e7
Signed-off-by: Jon Loeliger <jdl@netgate.com>
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Added two new errors:
ACL_IN_USE_INBOUND
ACL_IN_USE_OUTBOUND
Update ACL tests to expect new, precise return values.
Change-Id: I644861a18aa5b70cce5f451dd6655641160c7697
Signed-off-by: Jon Loeliger <jdl@netgate.com>
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Change-Id: I92b351895c7efb26533c05512b91ead8ddbfb9c8
Signed-off-by: Pavel Kotucek <pkotucek@cisco.com>
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MACIP ACLs
The classifier tables upper bound of memory was just big enough
to cause the unittests pass most of the time but not always.
Increase the amount of space and run several hundred iterations
of unittests to ensure they always pass.
Change-Id: Ieb7876c6ebdde1f8c5273dbb9b090f12f2c38915
Signed-off-by: Andrew Yourtchenko <ayourtch@gmail.com>
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format()
The vppctl was getting upset with large chunks of info generated
by repeated format() functions, so convert to use vlib_cli_output instead.
Also, refactor the show functionality into smaller functions,
separate from the input handling.
Change-Id: I5d0db5ac45ce4c1b59cd41526b837412e06b1ce0
Signed-off-by: Andrew Yourtchenko <ayourtch@gmail.com>
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INADDR6_ANY should be displayed as "::" instead of "0.0.0.0"(ipv4 format).
Change-Id: I24ec7b6febbfeca5db7ff894f455ecb73d954334
Signed-off-by: Steve Shin <jonshin@cisco.com>
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interface
From the troubleshooting perspective, it is nice to immediately know
the ACEs for the ACLs applied to an interface, so implement that.
To make the CLI more friendly, split each of the "show" variants
into an independent _cmd function with the distinct CLI path.
Change-Id: I519e4799083c04e8f0fcdf3e262a73493be4b690
Signed-off-by: Andrew Yourtchenko <ayourtch@gmail.com>
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- Teach vpp_api_test to send/receive API messages over sockets
- Add memfd-based shared memory
- Add api messages to create memfd-based shared memory segments
- vpp_api_test supports both socket and shared memory segment connections
- vpp_api_test pivot from socket to shared memory API messaging
- add socket client support to libvlibclient.so
- dead client reaper sends ping messages, container-friendly
- dead client reaper falls back to kill (<pid>, 0) live checking
if e.g. a python app goes silent for tens of seconds
- handle ping messages in python client support code
- teach show api ring about pairwise shared-memory segments
- fix ip probing of already resolved destinations (VPP-998)
We'll need this work to implement proper host-stack client isolation
Change-Id: Ic23b65f75c854d0393d9a2e9d6b122a9551be769
Signed-off-by: Dave Barach <dave@barachs.net>
Signed-off-by: Dave Wallace <dwallacelf@gmail.com>
Signed-off-by: Florin Coras <fcoras@cisco.com>
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The replacement of [] with pool_elt_at_index and subsequent fixing it
was incorrect - it was equivalent to &[], since it returns a pointer to
the element. I've added VPP-993 previously to create a testcase,
so this commit partially fulfills that one as well.
Change-Id: I5b15e3ce48316f0429232aacf885e8f7c63d9522
Signed-off-by: Andrew Yourtchenko <ayourtch@gmail.com>
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vector elements
bb7f0f644 aimed to fix the coverity issue has incorrectly replaced the previous [] access
with pool_elt_at_index(), for an element of a vector, with predictably interesting result.
VPP-991 has uncovered the issue.
Change-Id: Ifd3fb70332d3fdd1c4ff8570372f394913f7b6c8
Signed-off-by: Andrew Yourtchenko <ayourtch@gmail.com>
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It was useful for debugging once upon a time...
but time to say goodbye to it...
Also remove the warning printed when sending ACL details.
Change-Id: I43b2537e176556831eb7ff34b25c9068aa05ee27
Signed-off-by: Andrew Yourtchenko <ayourtch@gmail.com>
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Plus fixed problem with acl heap.
Change-Id: I3d91db549ebe4595f1dab9b8780f90722540024b
Signed-off-by: Pavel Kotucek <pkotucek@cisco.com>
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Fix coverity CIDs 176805, 176806, 176811, 176812
Change-Id: I73591c922307e7a98d38d5d92ebf37c8b2ff0145
Signed-off-by: Pavel Kotucek <pkotucek@cisco.com>
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This adds the ability to tweak the memory allocation parameters of the ACL plugin
from the startup config. It may be useful in the cases involving higher limit
of the connections than the default 1M, or the high number of cores.
Change-Id: I2b6fb3f61126ff3ee998424b762b6aefe8fb1b8e
Signed-off-by: Andrew Yourtchenko <ayourtch@gmail.com>
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Change-Id: Ia5c869b2d8b8ad012b9e89fb6720c9c32d9ee065
Signed-off-by: Pavel Kotucek <pkotucek@cisco.com>
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Change-Id: Ie40c837358454cfe9475cb2c14fdf20b24fa6602
Signed-off-by: Pavel Kotucek <pkotucek@cisco.com>
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Add a counter incremented upon the ACL check,
so it is easier to see which kind of traffic
is being checked by the policy, add the corresponding
output to the debug CLI "show acl-plugin tables" command.
Change-Id: Id811dddf204e63eeceabfcc509e3e9c5aae1dbc8
Signed-off-by: Andrew Yourtchenko <ayourtch@gmail.com>
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(complete the fix for VPP-935)
The fix for VPP-935 missed the case that hash_acl_add() and hash_acl_delete() may be called
during the replacement of the existing applied ACL, as a result the "applied" logic needs
to be replicated for the hash acls separately, since it is a lower layer.
Change-Id: I7dcb2b120fcbdceb5e59acb5029f9eb77bd0f240
Signed-off-by: Andrew Yourtchenko <ayourtch@gmail.com>
(cherry picked from commit ce9714032d36d18abe72981552219dff871ff392)
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When adding at least two different types of MACIP acl vpp crash.
Change-Id: Ibbc76b94015311945be081fe0d8af71cf0672332
Signed-off-by: Pavel Kotucek <pkotucek@cisco.com>
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In multithread setup the main thread may send packets,
which may pass through the node with permit+reflect action.
This creates the connection in lists for thread0,
however in multithread there are no interupt handlers there.
Ensure we are not spending too much time spinning in a
tight cycle by suspending the main cleaner thread
until the current iteration of interrupts is processed.
Change-Id: Idb7346737757ee9a67b5d3e549bc9ad9aab22e89
Signed-off-by: Andrew Yourtchenko <ayourtch@gmail.com>
(cherry picked from commit c1ff53f25d04ec1cc31844abd38014e91e398b5f)
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plugin heap is not initialized
With the addition of the own heap, the delete routines called from interface deletion
callback may attempt to initialize the ACL plugin heap. This is obviously not
a desirable condition - so, return early from the callback if the ACL plugin
heap has not been initialized yet - there is for sure nothing to clean up.
Change-Id: I08a6ae725294016ff5824189ade91c288e2c473b
Signed-off-by: Andrew Yourtchenko <ayourtch@gmail.com>
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(VPP-936)
When looking at resource utilisation, it is useful to understand
the interactions between the acl-plugin and the rest of VPP.
MACIP ACLs till now could only be dumped via API,
which is tricky when debugging. Add the CLIs to see
the MACIP ACLs and where they are applied.
Change-Id: I3211901589e3dcff751697831c1cd0e19dcab1da
Signed-off-by: Andrew Yourtchenko <ayourtch@gmail.com>
(cherry picked from commit f2cfcf676e67a7ea80ce20a69826210eb97acba5)
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interface (VPP-935)
The logic in hash ACL bitmask update was using the vector
of ACLs applied to the interface to rebuild the hash lookup mask.
However, in transient cases (like doing group manipulation with
hash ACLs), that will not hold true. Thus, make
a local copy of for which ACL indices the hash_acl_apply
was called previously, and maintain that one local
to the hash_lookup.c file logic.
Change-Id: I30187d68febce8bba2ab6ffbb1eee13b5c96a44b
Signed-off-by: Andrew Yourtchenko <ayourtch@gmail.com>
(cherry picked from commit 1de7d7044434196610190011ebb431f054701259)
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traffic (VPP-910/VPP-929)
The commit fixing the VPP-910 and separating the memory operations
into separate heaps has missed setting the MHEAP_FLAG_THREAD_SAFE,
which quite obviously caused the issues in the multithread setup.
Fix that.
Also, add the debug CLIs
"set acl-plugin heap {main|hash} {validate|trace} {1|0}"
to toggle the memory instrumentation, in case we ever need it
in the future.
Change-Id: I8bd4f7978613f5ea75a030cfb90674dac34ae7bf
Signed-off-by: Andrew Yourtchenko <ayourtch@gmail.com>
(cherry picked from commit e6423bef32ca2ffcfcd7a092eb4673badd53ea4c)
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It was uncaught by make test because the corresponding tests are not there yet - part of 17.10 deliverables
Change-Id: I55456f1874ce5665a06ee411c7abf37cd19ed814
Signed-off-by: Andrew Yourtchenko <ayourtch@gmail.com>
(cherry picked from commit 58013b73509521789608f24a79a00177797ff9b1)
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Change-Id: I2e71aef1aa745e85ad3234b0b708cdc50f335a75
Signed-off-by: Neale Ranns <neale.ranns@cisco.com>
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(VPP-910)
The further prolonged testing from testbed that reported VPP-910
has uncovered a couple of deeper issues with optimization from
7384, and the usage of subscripts rather than vec_elt_at_index()
allowed to hide a couple of further errors in the code.
Also, the current acl-plugin behavior of using the global
heap for its dynamic data is problematic - it makes
the troubleshooting much harder by potentially spreading
the problem around.
Based on this experience, this commits makes a few changes to fix
the issues seen, also improving the serviceability of the acl-plugin
code for the future:
- Use separate mheaps for any ACL-related control plane
operations and separate for the hash lookup datastructures,
to compartmentalize any memory-related issues for the ACL plugin.
- Ensure vec_elt_at_index() usage throughout the hash_lookup.c file.
- Use vectors rather than raw memory for storing the "ordinary" ACL rules.
- Rework the optimization from 7384 to use a separate tail pointer
rather than overloading the "prev" field.
- Make get_session_ptr() more conservative and adjust is_valid_session_ptr
accordingly
Change-Id: Ifda85193f361de5ed3782a4acd39622bd33c5830
Signed-off-by: Andrew Yourtchenko <ayourtch@gmail.com>
(cherry picked from commit bd9c5ffe39e9ce61db95d74d150e07d738f24da1)
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(VPP-912)
Fix several threading-related issues uncovered by the CSIT scale/performance test:
- make the per-interface add/del counters per-thread
- preallocate the per-worker session pools rather than
attempting to resize them within the datapath
- move the bihash initialization to the moment of ACL
being applied rather than later during the connection creation
- adjust the connection cleaning logic to not require
the signaling from workers to main thread
- make the connection lists check in the main thread robust against workers
updating the list heads at the same time
- add more information to "show acl-plugin sessions" to aid in debugging
Change-Id: If82ef715e4993614df11db5e9afa7fa6b522d9bc
Signed-off-by: Andrew Yourtchenko <ayourtch@gmail.com>
(cherry picked from commit 8e4222fc7e23a478b021930ade3cb7d20938e398)
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The "acl_plugin" tests has one of the tests sporadically fail with the following traceback:
r.reply.decode().rstrip('\x00') UnicodeDecodeError: 'ascii' codec can't decode byte
0xd8 in position 20666: ordinal not in range(128)
This occurs in the newly added "show acl-plugin table" debug CLI.
This CLI has only the numeric outputs, so the conclusion is that it is
the incorrect termination (trailing zero) that might be most probably
causing it. The other acl-plugins show commands also
lack the zero-termination termination, so fix all of them.
The particularity of this command vs. the other acl-plugin debug CLIs
is that the accumulator is freed and allocated multiple times,
this might explain the issue is not seen with them.
Change-Id: I87b5c0d6152fbebcae9c7d0ce97155c1ae6666db
Signed-off-by: Andrew Yourtchenko <ayourtch@gmail.com>
(cherry picked from commit be055bd719559fc79d8a4c06479497c4c0bfae93)
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interface
Multiple subsequent calls to vnet_feature_enable_disable() to enable the feature
cause the feature to be inserted into the processing graph multiple times in a row.
This might be argued to be a bug in that function, but enabling already enabled feature
is suboptimal anyway, so avoid that. The existing tests already catch this issue whenever
the ASSERT() part of this patch was added.
Change-Id: Ia2c06f7dc87bbe05795c2c7b7d19ea06270ce150
Signed-off-by: Andrew Yourtchenko <ayourtch@gmail.com>
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It is useful to have the CLI to clear the existing sessions.
There was a work-in-progress CLI but it did not work properly.
Fix it and split into a separate "clear acl-plugin sessions",
and add a unit test into the extended connection-oriented tests.
Change-Id: I55889165ebcee139841fdac88747390903a05394
Signed-off-by: Andrew Yourtchenko <ayourtch@gmail.com>
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The code path which sets the sw_if_index aimed to restrict the output
did not set the flag to trigger that output.
Change-Id: I0a1a3977fdddbce9a276960df43fed745d099ca0
Signed-off-by: Andrew Yourtchenko <ayourtch@gmail.com>
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Add a bihash-based ACL lookup mechanism and make it a new default.
This changes the time required to lookup a 5-tuple match
from O(total_N_entries) to O(total_N_mask_types), where
"mask type" is an overall mask on the 5-tuple required
to represent an ACE.
For testing/comparison there is a temporary debug CLI
"set acl-plugin use-hash-acl-matching {0|1}", which,
when set to 0, makes the plugin use the "old" linear lookup,
and when set to 1, makes it use the hash-based lookup.
Based on the discussions on vpp-dev mailing list,
prevent assigning the ACL index to an interface,
when the ACL with that index is not defined,
also prevent deleting an ACL if that ACL is applied.
Also, for the easier debugging of the state, there are
new debug CLI commands to see the ACL plugin state at
several layers:
"show acl-plugin acl [index N]" - show a high-level
ACL representation, used for the linear lookup and
as a base for building the hashtable-based lookup.
Also shows if a given ACL is applied somewhere.
"show acl-plugin interface [sw_if_index N]" - show
which interfaces have which ACL(s) applied.
"show acl-plugin tables" - a lower-level debug command
used to see the state of all of the related data structures
at once. There are specifiers possible, which make
for a more focused and maybe augmented output:
"show acl-plugin tables acl [index N]"
show the "bitmask-ready" representations of the ACLs,
we well as the mask types and their associated indices.
"show acl-plutin tables mask"
show the derived mask types and their indices only.
"show acl-plugin tables applied [sw_if_index N]"
show the table of all of the ACEs applied for a given
sw_if_index or all interfaces.
"show acl-plugin tables hash [verbose N]"
show the 48x8 bihash used for the ACL lookup.
Change-Id: I89fff051424cb44bcb189e3cee04c1b8f76efc28
Signed-off-by: Andrew Yourtchenko <ayourtch@gmail.com>
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A bihash-per-interface is convenient, but turns out tricky difficult from
the maintenance standpoint with the large number of interfaces.
This patch makes the sessions reside in a single hash table for all the interfaces,
adding the lower 16 bit of sw_if_index as part of the key into the previously
unused space.
There is a tradeoff, that a session with an identical 5-tuple and the same
sw_if_index modulo 65536 will match on either of the interfaces.
The probability of that is deemed sufficiently small to not worry about it.
In case it still happens before the heat death of the universe,
there is a clib_warning and the colliding packet will be dropped,
at which point we will need to bump the hash key size by another u64,
but rather not pay the cost of doing that right now.
Change-Id: I2747839cfcceda73e597cbcafbe1e377fb8f1889
Signed-off-by: Andrew Yourtchenko <ayourtch@gmail.com>
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The previous iteration of the code used the L2 classifier tables for session storage,
as a result, the table allocations were pretty big. The new ACL plugin
datapath uses the tables just as a redirection mechanism, without adding any
entries. Thus, the tables can be much smaller.
Change-Id: Ieec4a5abf0abda6e513ab4e675f912f14d47e671
Signed-off-by: Andrew Yourtchenko <ayourtch@gmail.com>
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Change-Id: Ic3c9a914a588824b8abd6668961f731432083c4f
Signed-off-by: Andrew Yourtchenko <ayourtch@gmail.com>
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code use it
This fixes the undesirable pause in the dump commands in case there is nothing to dump.
Change-Id: I0554556c9e442038aa2a1ed8c88234f21f7fe9b9
Signed-off-by: Andrew Yourtchenko <ayourtch@gmail.com>
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Add the logic to be able to use stateful ACLs in a multithreaded setup.
Change-Id: I3b0cfa6ca4ea8f46f61648611c3e97b00c3376b6
Signed-off-by: Andrew Yourtchenko <ayourtch@gmail.com>
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Prior to commit bfd9227e6da567e0e19e026afe94cd4c0b65f725, there was
no clean way to check the lower-level message length as supplied
by the client, so there was no option but to trust that the client
does the right thing and allocates memory correctly.
The absence of checks makes it hard for a misbehaving client
to spot the problem - because everything "appears" to work
correctly for the specific erroneous message exchange.
This commit ensures the message received is at least
as big as we expect, and complains loudly if it is not.
Change-Id: I806eaac7c7f1ab3c64cb2bfa6939ce27da9a2b44
Signed-off-by: Andrew Yourtchenko <ayourtch@gmail.com>
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(HC2VPP-137 is the client behavior triggering this)
If the user does not unapply the ACLs off the interface,
but deletes the interface, the subsequent reuse of the
sw_if_index might find itself with the datapath
hooked up for ACL processing even though there is
no ACL configured. The fix is to unapply any ACLs
in the callback which is called upon the sw_if_index
addition/deletion.
Change-Id: Icea413d7fbf1ef891844a4818626e1b34fe79cbf
Signed-off-by: Andrew Yourtchenko <ayourtch@gmail.com>
(cherry picked from commit 4c72e629e5ace392390a9d6109594254525064f7)
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Change-Id: I3d64d5ced38a68f3fa208be00c49d20c4e6d4d0e
Signed-off-by: Andrew Yourtchenko <ayourtch@gmail.com>
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(VPP-682)
This fixes the previously-implicit "drop all non-first fragments" behavior
to be more in line with security rules: a non-first fragment is treated
for the purposes of matching the ACL as a packet with the port
match succeeding. This allows to change the behavior to permit
the fragmented packets for the default "permit specific rules"
ruleset, but also gives the flexibility to block the non-initial
fragments by inserting into the begining a bogus rule
which would deny the L4 traffic.
Also, add a knob which allows to potentially turn this behavior off
in case of a dire need (and revert to dropping all non-initial fragments),
via a debug CLI.
Change-Id: I546b372b65ff2157d9c68b1d32f9e644f1dd71b4
Signed-off-by: Andrew Yourtchenko <ayourtch@gmail.com>
(cherry picked from commit 9fc0c26c6b28fd6c8b8142ea52f52eafa7e8c7ac)
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Change-Id: Id15b401223aabe7dacb7566c871ebefc17fbb1fc
Signed-off-by: Andrew Yourtchenko <ayourtch@gmail.com>
(cherry picked from commit 7fd3f513c7df198c45204eba0a3e9a3abe509593)
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- use the counters in a private struct rather than node error counters
- ensure the timer for the non-idle connections is restarted
- fix the deletion of conn at the current tail the list
Change-Id: I632f63574d2ced95fb75c5e7fb588c78fb3cce1c
Signed-off-by: Andrew Yourtchenko <ayourtch@gmail.com>
(cherry picked from commit 097051a3bd1f63a177c0728f15375afd84a68918)
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Change-Id: I88b322a5d602f3d6d3310e971479180a89430e0e
Signed-off-by: Damjan Marion <damarion@cisco.com>
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L3 path support, L2+L3 unified processing node, skip IPv6 EH support.
Change-Id: Iac37a466ba1c035e5c2997b03c0743bfec5c9a08
Signed-off-by: Andrew Yourtchenko <ayourtch@gmail.com>
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Change-Id: I08ab1fd0abdd1db4aff11a38c9c0134b01368e11
Signed-off-by: Eyal Bari <ebari@cisco.com>
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Change-Id: I95113a277b94cce5ff332fcf9f57ec6f385acec0
Signed-off-by: Pavel Kotucek <pkotucek@cisco.com>
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via l2output_main.next_nodes
Before this commit, several output features that happen to be the
last in the list of features to be executed, send the packets directly
to <interfaceName>-output. To do this, they use l2_output_dispatch,
which builds a list of sw_if_index to next index mappings.
When interfaces are deleted and the new interfaces are created,
these mappings become stale, and cause the packets being sent to wrong
interface output nodes.
This patch (thanks John Lo for the brilliant idea!) adds a feature node "output",
whose sole purpose is dispatching the packets to the correct interface output
nodes. To do that, it uses the l2output_main.next_nodes, which is already
taken care of for the case of the sw_if_index reuse, so this makes the dependent
features all work correctly.
Since this changes the packet path, for the features that were always the last ones
it has triggered a side problem of the output feat_next_node_index not being properly
initalized. These two users are l2-output-classify node and the output nodes belonging
to the acl-plugin.
For the first one the less invasive fix is just to initialize that field.
For the acl-plugin nodes, rewrite the affected part of the code to use
feat_bitmap_get_next_node_index since this is essentially what the conditional
in l2_output_dispatch does, and fix the compiler warnings generated.
This fix was first made in stable/1701 under commit e7dcee4027854b0ad076101471afdfff67eb9011.
Change-Id: I32e876ab1e1d498cf0854c19c6318dcf59a93805
Signed-off-by: Andrew Yourtchenko <ayourtch@gmail.com>
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This patch replaces requirement for vlib_plugin_register function
in the plugin so file and introduces new macro:
VLIB_PLUGIN_REGISTER () = {
.version = "version string",
.version_required = "requred version",
.default_disabled = 1,
.early_init = "early_init_function_name",
};
Plugin will nor be loaded if .default_disabled is set to 1
unless explicitely enabled in startup.conf.
If .verstion_required is set, plugin will not be loaded if there
is version mismatch between plugin and vpp. This can be bypassed
by setting "skip-version-check" for specific plugin.
If .early-init string is present, plugin loader will try to resolve
this specific symbol in the plugin namespace and make a function call.
Following startup.conf configuration is added:
plugins {
path /path/to/plugin/directory
plugin ila_plugin.so { enable skip-version-check }
plugin acl_plugin.so { disable }
}
Change-Id: I706c691dd34d94ffe9e02b59831af8859a95f061
Signed-off-by: Damjan Marion <damarion@cisco.com>
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Jon Loeliger
Pavel Kotucek
Andrew Yourtchenko
Steve Shin
Dave Barach
Neale Ranns
Damjan Marion
Eyal Bari