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2021-10-13docs: convert plugins doc md->rstNathan Skrzypczak6-180/+224
Type: improvement Change-Id: I7e821cce1feae229e1be4baeed249b9cca658135 Signed-off-by: Nathan Skrzypczak <nathan.skrzypczak@gmail.com>
2021-10-13nat: fix coverity warningKlement Sekera1-1/+1
Fix coverity warning by initialising proto variable to a dummy value. This value is never used because consuming function uses this parameter value only if is_addr_only flag is not set and this flag is always set if proto value is not provided by user. Type: fix Signed-off-by: Klement Sekera <ksekera@cisco.com> Change-Id: I9b5e8c08346bea1e2b460bb09e962c4b8d3b6947
2021-10-13nat: fix static mapping segvJoshua Roys1-1/+1
Adding a nat44 static mapping during startup on a DHCP interface leads to a segv via this path: - dhcp_client_acquire_address - ip4_add_del_interface_address - ip4_add_del_interface_address_internal - nat44_ed_add_del_interface_address_cb - nat44_ed_add_static_mapping - ip4_interface_first_address Type: fix Signed-off-by: Joshua Roys <roysjosh@gmail.com> Change-Id: I38dac8a096b052550f2b87b4e13a950d2cd868b0
2021-10-12Revert "nat: static mappings in flow hash"Ole Troan27-1058/+1457
This reverts commit 69b7599e4b061a8996205f0304232ede84cb70d4. Type: fix Signed-off-by: Ole Troan <ot@cisco.com> Change-Id: If531b122ae5a9f91c2fe6eaa0da69922a91f16d3
2021-10-12nat: static mappings in flow hashKlement Sekera27-1457/+1058
Put static mappings in flow hash, drop existing hash tables used for static mappings. Drop refcount variables and use hash table as a single point of truth. Allow creating a static mapping conflicting with dynamic mapping, which will take precedence after dynamic mapping is freed, so that the existing flow can finish transferring data. Type: fix Signed-off-by: Klement Sekera <ksekera@cisco.com> Change-Id: Ieeba691d83a83887d0a0baccd5f3832f66126096
2021-10-05nat: NAT44 ED api fix and improvementFilip Varga3-14/+178
Backward compatibility fix returns erroneous behavior that lets user add internally unused inside interface for the purpose of complying with the old add/dump/details API behavior. Change introduced in https://gerrit.fd.io/r/c/vpp/+/32951 removed extra inside interface that wasn't required or any how used by the output feature. This patch also changed outside interface flags to inside & outside. This fix returns the old behavior by imitating the old behavior through dummy registratoin data. Added new API calls nat44_ed_add_del_output_interface and nat44_ed_output_interface_get/details as a replacement of old API's. New API introduces simplified and cleaner way of configuring outside feature without requirement of config flags. Type: improvement Signed-off-by: Filip Varga <fivarga@cisco.com> Change-Id: I7a170f7325727c04da5e2e3ffbe3f02179531284
2021-09-30nat: doc nitfixesNathan Skrzypczak5-8/+8
Type: improvement Change-Id: I9a4303030b9657c28bbd73168def72c7daa13483 Signed-off-by: Nathan Skrzypczak <nathan.skrzypczak@gmail.com>
2021-09-29nat: nat44-ed add session timing out indicator in api (2)Alexander Chernavin2-1/+146
Type: improvement Currently, NAT44-ED users sessions details are returned for both active and timed out NAT sessions. It may confuse users that expect to see only active sessions in the response and make them think that timeouts for NAT sessions do not work. With this change, introduce an indicator of timing out for NAT sessions returned in NAT44-ED user session details. Signed-off-by: Alexander Chernavin <achernavin@netgate.com> Change-Id: Ib4d689f77cec4b0b0cc8484019e13733cc8bdc0d
2021-09-28nat: NAT44 ED & EI session filtering CLIJúlius Milan2-15/+103
Improving session filtering capabilities of show nat44 sessions CLI command for EI and ED NAT plugins. Adding filtering options: saddr, sport, daddr, dport, proto for both i2o and o2i flows. Type: improvement Change-Id: I70bc94a2e922cddf9451eb7dcbf4a7be21ebf0df Signed-off-by: Filip Varga <fivarga@cisco.com>
2021-09-21pnat: fix the version of the PNAT plugin from the hardcoded 0.0.1Andrew Yourtchenko1-1/+2
Type: fix Change-Id: I35db6763f3c5bd73169a222a4a93a917e8f468e6 Signed-off-by: Andrew Yourtchenko <ayourtch@gmail.com> Signed-off-by: Ole Troan <ot@cisco.com>
2021-09-09nat: Revert "nat: nat44-ed add session timing out indicator in api"Andrew Yourtchenko2-150/+1
This reverts commit f059a3452c285ec57a75c7b1ede5052244be4e5d, which broke the build. https://s3-logs.fd.io/logs/production/vex-yul-rot-jenkins-1/vpp-merge-master-debian10-x86_64/1344/console.log.gz Change-Id: I16fece8128fa9973495c587d105a8db57738e8f2 Type: fix Signed-off-by: Andrew Yourtchenko <ayourtch@gmail.com>
2021-09-09nat: nat44-ed add session timing out indicator in apiAlexander Chernavin2-1/+150
Type: improvement Currently, NAT44-ED users sessions details are returned for both active and timed out NAT sessions. It may confuse users that expect to see only active sessions in the response and make them think that timeouts for NAT sessions do not work. With this change, introduce an indicator of timing out for NAT sessions returned in NAT44-ED user session details. Signed-off-by: Alexander Chernavin <achernavin@netgate.com> Change-Id: Ib81ed90369d4b495117538f521e5112e289cf7e6
2021-09-08nat: remove unusued parameters and use correct parameter typesKlement Sekera2-20/+15
Type: improvement Signed-off-by: Klement Sekera <ksekera@cisco.com> Change-Id: I4f7b3d5354a7658d7271c28444f2f4641f05b28b
2021-09-02nat: NAT44 ED improvements and fixesFilip Varga8-392/+353
Fixed FIB entry per interface, pool and static mapping registrations in NAT control plane. Improved FIB configuration handling in NAT - added functions to generalize handling of FIB & NAT, cleaned up interface callback functions. Changed "is_" macros to inline functions for easier debugging. Type: improvement Change-Id: I68a17761a975dd819139ae94e52a8a85d3f27ffc Signed-off-by: Filip Varga <fivarga@cisco.com>
2021-08-19nat: handle ED in2out ICMP errors with workersMatthew Smith1-0/+22
Type: fix With endpoint dependent NAT44, When there are multiple workers we look for a flow which matches the packet in order to figure out which worker should handle the packet. If the packet is an ICMP error, it may be associated with an existing flow by inspecting the L3/L4 headers that are included in the message payload. This was not being done for in2out packets in nat44_ed_get_in2out_worker_index(), so some packets which were related to an open session were not being associated with that session and were being passed to a different thread than the one where the session was created. Later on, when the packet was processed by the fast path in2out node, the L3/L4 headers in the payload are inspected and the fast path node finds the existing session. Since that session is owned by a different thread than the one the packet is being processed by, the in2out fast path node can potentially access the wrong session and/or memory adjacent to the session pool. This can cause a SEGV. Make nat44_ed_get_in2out_worker_index() look at the inner headers when processing an ICMP error. THis is already done in nat44_ed_get_out2in_worker_index() and in the fast path in2out node. Change-Id: Icdc1abebcbce452ee7be7cb23fc563e09bf575f2 Signed-off-by: Matthew Smith <mgsmith@netgate.com>
2021-08-17nat: fix counters increment for output featureAlexander Chernavin3-68/+93
Type: fix The NAT plugin stores packet counters and a counter represents a vector indexed by interface index. When an interface is assigned a NAT role, the counters are validated to be long enough for the given interface index. When a packet traverses NAT in2out and output feature is disabled, the appropriate counters are updated by the RX interface index. In this case, translation happens on the inside interface and its index was ensured to be valid in all of the counters during NAT role assignment. When a packet traverses NAT in2out and output feature is enabled, the appropriate counters are updated by the RX interface index too. In this case, translation happens on the outside interface and the packet could be received on any interface, even with no NAT role assigned. If that's the case and its index is greater than the greatest index validated in the counters, a new counter value will be written to memory that does not belong to the counter. As a result, a crash will occur at some point. With this change, use TX interface index to update the counters when output feature is enabled. TX interface is an actual interface where translation happens and its index is always valid in the counters. Signed-off-by: Alexander Chernavin <achernavin@netgate.com> Change-Id: I53a52af949fe96419e1b5fef4134ab4062198f51
2021-08-12nat: NAT44ED configuration refactorFilip Varga4-378/+365
Refactoring and cleaning up address allocation functions & ip table update callbacks. Type: refactor Change-Id: I9a11700a5f335b64d0d84e04d8e16d040624e01b Signed-off-by: Filip Varga <fivarga@cisco.com>
2021-08-12nat: correct pool ops when disable nat44 pluginAlexander Skorichenko1-10/+10
Type: fix Replace vec ops with pool ops when iterating over pool of interfaces in plugin_disable() functions. With this change plugin disabling function and interface role disabling functions iterate over identical sets of registered interfaces, preventing 'interface couldn't be found' errors. Signed-off-by: Alexander Skorichenko <askorichenko@netgate.com> Change-Id: I4e191bcc5322ff1f9f7730c6fda5e6af86a8eec9
2021-08-05nat: nat44-ed disable protection for api/cliFilip Varga4-60/+67
Return unsupported error if user calls one of the configuration functions that can run only after nat44-ed plugin is enabled via appropriate api/cli call. Type: fix Change-Id: I0d4ab0684ba5ae23fc2ecc668554a34537c2904a Signed-off-by: Filip Varga <fivarga@cisco.com>
2021-07-29nat: fix ICMP checksum validationKlement Sekera1-9/+9
Handle case where extra data is present in buffer which is not part of IP/ICMP headers. Type: fix Fixes: 05b5a5b3b4b04823776feed6403b5a99b2e06d76 Change-Id: Icfef811470056d38c60fc45cc302139ed7594385 Signed-off-by: Klement Sekera <ksekera@cisco.com>
2021-07-22nat: nat44-ed configuration refactor & cleanupFilip Varga9-896/+1195
Refactoring static mapping configuration functions based on feature type. Type: refactor Signed-off-by: Filip Varga <fivarga@cisco.com> Change-Id: I007d9b0e9717ced613fbcef2b11b6853f479be1e
2021-07-19nat: harden ICMP handlingKlement Sekera4-49/+110
Verify that headers are not truncated and that checksums are valid. Correct checksum computation in translation code. Type: fix Change-Id: I6acfcec4661411f83c86b15aafac90cd4538c0b5 Signed-off-by: Klement Sekera <ksekera@cisco.com>
2021-07-15misc: replace CLIB_PREFETCH with clib_prefetch_{load,store}Damjan Marion9-20/+20
Type: refactor Change-Id: Id10cbf52e8f2dd809080a228d8fa282308be84ac Signed-off-by: Damjan Marion <damarion@cisco.com>
2021-07-15nat: nat44-ed sm fixFilip Varga1-15/+13
Fixing nat44-ed identity map in2out communication. TCP packets would get dropped because of the order of testing TCP state. Type: fix Change-Id: Ib11e7e75c66945224fecc0bb311733672e315c7d Signed-off-by: Filip Varga <fivarga@cisco.com>
2021-07-14nat: refactoring NAT44ED cfg functionsFilip Varga4-344/+500
Refactored & fixed NAT44ED configuration functions used for handling interfaces and nodes. Type: refactor Signed-off-by: Filip Varga <fivarga@cisco.com> Change-Id: I6fbbb7f0fe35d572675997745d53290152987424
2021-06-23nat: ICMP handling fixesKlement Sekera4-24/+110
If ICMP comes from a router on path, source address must not be rewritten in o2i path to avoid getting wrong checksum. Fix ICMP checksum computations. Type: fix Signed-off-by: Klement Sekera <ksekera@cisco.com> Change-Id: I035debccf966d7dbd63c364cb1e43380d641f708
2021-06-22nat: don't drop packet with ttl=1 if output featureKlement Sekera1-2/+2
TTL was already decremented in ip4-rewrite so it's okay if it's 1. Type: fix Signed-off-by: Klement Sekera <ksekera@cisco.com> Change-Id: I587dc343737c15247eb62837a06d5e44c0d11acc
2021-06-16nat: test all intf addrs in is_interface_addr()Alexander Chernavin4-20/+42
Type: fix Currently, is_interface_addr() tests if a given IPv4 address belongs to an interface by a given sw_if_index. However, there are several issues: * only the first found address on the interface is actually tested, * sw_if_index is always cached even if the interface hasn't been assigned any addresses yet. With this change, is_interface_addr() tests all IPv4 addresses on an interface by a given sw_if_index and caches sw_if_index only if there are addresses present. Signed-off-by: Alexander Chernavin <achernavin@netgate.com> Change-Id: If1acc4a534647a5f0ce8e9b565b867c92a016dc3
2021-06-16nat: fix crash when translate unknown proto packetsAlexander Chernavin2-4/+5
Type: fix Currently, there might be a crash in NAT ED mode: * if a session for an unknown proto packet cannot be created in2out, * if a session for an unknown proto packet cannot be found out2in. With this change, translate packets only if a session is given in NAT ED mode. Signed-off-by: Alexander Chernavin <achernavin@netgate.com> Change-Id: Iafb332db1ae9a3e76435964ad636037d1b8a51e8
2021-05-31nat: fix broken nat44-ed cliRuslan Babayev2-10/+1
snat_set_frame_queue_nelts has been replaced with nat44_ed_set_frame_queue_nelts. Type: fix Signed-off-by: Ruslan Babayev <ruslan@babayev.com> Change-Id: I8d970be71376fdbb2bfd383d4d5824a8def93bb3
2021-05-26nat: add thread index assertionsKlement Sekera4-0/+11
Add extra assertions to debug build. Type: improvement Signed-off-by: Klement Sekera <ksekera@cisco.com> Change-Id: Ib20130365e8f9dbb556fcbb4321dd184c7eff603
2021-05-25nat: report correct EI per-user session limitMatthew Smith2-3/+5
Type: fix When enabling the endpoint independent NAT44 plugin, user_sessions determines the maximum number of translations that can be active for a single inside address. If 0 is passed in, a default value is used but 0 is still stored in the field that is used to populate reply messages to nat44_ei_show_running_config, At the time of enabling the plugin, if user_sessions is 0, update the field which is used by nat44_ei_show_running_config to contain the default per-user limit which gets used by the EI nodes. Change-Id: I6b060d85bcd42d91db879b95a8b07c6844bcd2a5 Signed-off-by: Matthew Smith <mgsmith@netgate.com>
2021-05-21nat: add maximum configured sessions to stat segmentOle Troan2-0/+11
Add /nat44-ed/max-cfg-sessions gauge. Reflects the configured value for configured sessions (per thread). Type: improvement Signed-off-by: Ole Troan <ot@cisco.com> Change-Id: I618c8aa0daab0981399cfe9273d191fa1990ef60 Signed-off-by: Ole Troan <ot@cisco.com>
2021-05-14vlib: pass node runtime to vlib_buffer_enqueue_to_thread()Damjan Marion6-15/+12
Mechanical change for patch following this one... Type: improvement Change-Id: Iee12f3a8851f35569e6c039494a94fc36e83d20f Signed-off-by: Damjan Marion <damarion@cisco.com>
2021-05-13tests: move test source to vpp/testDave Wallace8-11555/+0
- Generate copyright year and version instead of using hard-coded data Type: refactor Signed-off-by: Dave Wallace <dwallacelf@gmail.com> Change-Id: I6058f5025323b3aa483f5df4a2c4371e27b5914e
2021-05-06vlib: rename vl_counter_t to vlib_error_desc_tOle Troan1-1/+1
Type: improvement Signed-off-by: Ole Troan <ot@cisco.com> Change-Id: I368b0410db2d633d3c52199c840e24d21952c1b4
2021-05-06pnat: coverity errorsOle Troan4-5/+13
Type: fix Signed-off-by: Ole Troan <ot@cisco.com> Change-Id: Ic38cfbdcab86172bad6ec6cb4c66c83f8deed64f Signed-off-by: Ole Troan <ot@cisco.com>
2021-05-05nat: cli commands parsing fixFilip Varga2-235/+200
Newline get's ignored when parsing configuration file. Type: fix Signed-off-by: Filip Varga <fivarga@cisco.com> Change-Id: Ib4f86177150dfe3bc085231a9268cf730490ea81
2021-05-05nat: fixing cfg file parsing cli issuesFilip Varga4-93/+92
Type: fix Change-Id: I35012bb2f7af1996c954641af40f3223bc7f37e4 Signed-off-by: Filip Varga <fivarga@cisco.com>
2021-05-01vlib: refactor trajectory trace debug featureBenoît Ganne2-8/+0
trajectory trace has been broken for a while because we used to save the buffer trajectory in a vector pointed to in opaque2. This does not work well when opaque2 is copied (eg. because of a clone) as 2 buffers end up sharing the same vector. This dedicates a full cacheline in the buffer metadata instead when trajectory is compiled in. No dynamic allocation, no sharing, no tears. Type: refactor Change-Id: I6a028ca1b48d38f393a36979e5e452c2dd48ad3f Signed-off-by: Benoît Ganne <bganne@cisco.com>
2021-04-28nat: fix byte order on ipfix message fieldsMatthew Smith4-7/+10
Type: fix The code for quota exceeded events is a u32 and was being copied into ipfix packets in host byte order. Same for the limit field. Swap the order before copying into packet buffer. This change was applied once before but had to be reverted. This was because between the time the change was uploaded/reviewed and the time it was merged, a different patch was merged which activated a NAT ipfix unit test that had formerly only been run as part of the extended tests. The test was expecting the values to be in host byte order so it failed with this patch applied. This time around, that test has also been updated to expect network byte order. Change-Id: If5413b1f806d664f6786e56ba13c3eee573c26d2 Signed-off-by: Matthew Smith <mgsmith@netgate.com>
2021-04-23nat: correct detection of icmp bypass presenceKlement Sekera1-2/+2
Type: fix Signed-off-by: Klement Sekera <ksekera@cisco.com> Change-Id: Iead167e7497e0779c440f7fb243014a06ae2b452
2021-04-21nat: fix multi worker scenariosKlement Sekera3-48/+161
Properly select worker from hash table in out2in direction, increase number of worker threads in MW test to 4 to test these cases. Type: fix Change-Id: I76eda5761ff497b85b031dd913a64b7fcb53b33a Signed-off-by: Klement Sekera <ksekera@cisco.com>
2021-04-20nat: fixing cli bug for nat44-ei and nat44-edFilip Varga2-2/+2
Removing obsolete optional parameters. Type: fix Change-Id: I135eb4767979ab81636da16e91752a2ad80e0a45 Signed-off-by: Filip Varga <fivarga@cisco.com>
2021-04-20nat: nat44-ed i2o & o2i trace fixFilip Varga2-8/+10
If cache used than we don't print in trace session index. Type: fix Change-Id: Ib965cd8632b5217f8b2dd8b6cc6af3286c747582 Signed-off-by: Filip Varga <fivarga@cisco.com>
2021-04-14nat: test dynamic translation between two vrfsFilip Varga1-3/+41
Adding test for NAT44-ED subplugin. Type: test Change-Id: I10ce3d3ca8cb976ee9879efe77cb600df0102147 Signed-off-by: Filip Varga <fivarga@cisco.com>
2021-04-06tests: remove wrappersKlement Sekera1-75/+53
Improve the code by removing another kind of wrappers. Type: improvement Change-Id: I5292ef6c1761e3c6c2edd15f2aa625dac26c3732 Signed-off-by: Klement Sekera <ksekera@cisco.com>
2021-04-01nat: fix ordering of feature nodesKlement Sekera1-2/+4
Fix ordering of feature nodes so that ACL runs after NAT in in2out direction so it can properly track stuff like ports after NAT rewrite. Type: fix Change-Id: I2c689b64765628e9bc77108914f74c6c801d8ce2 Signed-off-by: Klement Sekera <ksekera@cisco.com>
2021-03-31nat: enable multiworker testsKlement Sekera1-2/+0
Type: fix Signed-off-by: Klement Sekera <ksekera@cisco.com> Change-Id: I4a5d52d54aa2748008e896888bfeabb18a1088bb
2021-03-31nat: fix test for multi-worker scenarioKlement Sekera1-3/+16
Type: fix Change-Id: I170f9d8c685f59b7ccf6f9ee7fdc1dcdf2a54fe1 Signed-off-by: Klement Sekera <ksekera@cisco.com>