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path: root/src/plugins/nat/nat.h
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2020-03-26nat: transitory timeout for TCP CLOSED stateKlement Sekera1-9/+3
Wait transitory timeout seconds before moving internal state of TCP session to CLOSED state per RFC 7857. This patch implements this functionality for endpoint-dependent NAT. Type: improvement Signed-off-by: Klement Sekera <ksekera@cisco.com> Change-Id: I4491d831cd9edf63fae520a516cdbe590bac85db
2020-03-25nat: fix error countersKlement Sekera1-0/+6
Type: fix Change-Id: I021b1427362f4bdba1c0ebc9863c9143dd6b3cb7 Signed-off-by: Klement Sekera <ksekera@cisco.com>
2020-03-13nat: timed out session scavenging upgradeFilip Varga1-3/+28
Patch changes the behavior of session scavenging and fixes multiple nat issues. Allows proper session clearing and removes issue with lingering sessions in session db. Patch also updates and fixes CLI/API calls for better readability of session state metrics. Fixes security issue that would allow attacker to reuse timed out session in both directions (in2out/out2in). Type: improvement Signed-off-by: Filip Varga <fivarga@cisco.com> Change-Id: I78897585a2a57291fad5db6d457941aa0a0457bd
2020-03-11nat: dslite plugin separationFilip Varga1-1/+0
Type: refactor Signed-off-by: Filip Varga <fivarga@cisco.com> Change-Id: I81546423200cc7f8a06b527dac8ead191a9e0519
2020-02-20nat: avoid running pointless session cleanupsKlement Sekera1-0/+3
Save the next session timeout when sweeping sessions for cleanup so that we can avoid unnecessary runs of the sweeping algorithm. Type: fix Change-Id: I736d00f2dfe242af10f963fbe34b11128f8b0613 Signed-off-by: Klement Sekera <ksekera@cisco.com>
2020-02-05nat: move dslite to separate sub-pluginOle Troan1-5/+0
Type: refactor Change-Id: If3d9f16f3a06c10b354f1eef674e8db5f3c44de7 Signed-off-by: Ole Troan <ot@cisco.com>
2020-01-03nat: use SVRKlement Sekera1-13/+15
Remove NAT's implementation of shallow virtual reassembly with corresponding CLIs, APIs & tests. Replace with standalone shallow virtual reassembly provided by ipX-sv-reass* nodes. Type: refactor Change-Id: I7e6c7487a5a500d591f6871474a359e0993e59b6 Signed-off-by: Klement Sekera <ksekera@cisco.com>
2019-12-12nat: session cleanup fixFilip Varga1-2/+2
Ticket: VPP-1795 Type: fix Change-Id: Ib3b5742119d7013c293a11eb3dd1aadf46b422dd Signed-off-by: Filip Varga <fivarga@cisco.com>
2019-12-04fib: Decouple source from priority and behaviourNeale Ranns1-0/+4
Type: feature the fib_source_t enum alone no longer defines the priority and behaviour, instead each source must be allocated these attributes. This allows the creation of other sources by the plugins (and soon over the API). Signed-off-by: Neale Ranns <nranns@cisco.com> Change-Id: I890ee820fbc16079ee417ea1fbc163192806e853
2019-11-19nat: respect arc features (multi worker)Filip Varga1-0/+54
Type: fix Ticket: VPP-1747 Change-Id: If282aae3e584d7017c200f897b99c8a37eb1b2e5 Signed-off-by: Filip Varga <fivarga@cisco.com>
2019-08-22nat: handoff traffic matching for dynamic NATFilip Varga1-2/+139
Type: feature Change-Id: I5c5af6f9acb340cc674323305104b8ce23e6d21d Signed-off-by: Filip Varga <fivarga@cisco.com>
2019-07-31nat: elog rewrite for multi-worker supportFilip Varga1-0/+101
Type: fix Change-Id: I04f136a04bc022d223e4bcb5c59920bd1f1fd560 Signed-off-by: Filip Varga <filipvarga89@gmail.com>
2019-04-24NAT: VPP-1531 api cleanup & updateFilip Varga1-0/+18
Change-Id: I2492400a67b39a3adbc24ab7cf1ba17a409e95a8 Signed-off-by: Filip Varga <fivarga@cisco.com>
2019-04-23Revert "NAT: VPP-1531 api cleanup & update"Ole Trøan1-18/+0
This reverts commit bed1421b9f1b3643d93384084972337b596aec73. /vpp/master3/src/plugins/nat/nat_api.c: In function ‘send_nat_worker_details’: /vpp/master3/src/vppinfra/clib.h:62:33: error: division ‘sizeof (u8 * {aka unsigned char *}) / sizeof (u8 {aka unsigned char})’ does not compute the number of array elements [-Werror=sizeof-pointer-div] #define ARRAY_LEN(x) (sizeof (x)/sizeof (x[0])) ^ /vpp/master3/src/plugins/nat/nat_api.c:205:43: note: in expansion of macro ‘ARRAY_LEN’ rmp = vl_msg_api_alloc (sizeof (*rmp) + ARRAY_LEN (w->name) - 1); ^~~~~~~~~ Change-Id: Ie82672c145fb2f6580827f95e535435307bc7a23 Signed-off-by: Ole Troan <ot@cisco.com>
2019-04-23NAT: VPP-1531 api cleanup & updateFilip Varga1-0/+18
Change-Id: I519d7efc8ee3c86381d96be2e2a46017cd948895 Signed-off-by: Filip Varga <fivarga@cisco.com>
2019-03-28Typos. A bunch of typos I've been collecting.Paul Vinciguerra1-3/+3
Change-Id: I53ab8d17914e6563110354e4052109ac02bf8f3b Signed-off-by: Paul Vinciguerra <pvinci@vinciconsulting.com>
2019-02-27NAT44: active-passive HA (VPP-1571)Matus Fabian1-3/+6
session synchronization so that we can build a plain active-passive HA NAT pair Change-Id: I21db200491081ca46b7af3e82afc677c1985abf4 Signed-off-by: Matus Fabian <matfabia@cisco.com>
2019-02-18NAT: VPP-1552 code migration from old multiarch schemeFilip Varga1-2/+25
Change-Id: I88f3df8aaa521e7707ef3335acdbf1ab41e7ee28 Signed-off-by: Filip Varga <fivarga@cisco.com>
2018-12-20NAT: total users and sessions gauges (VPP-1484)Matus Fabian1-0/+4
Change-Id: I41a82e21571d5c64d01af72cd88c3983afac26ed Signed-off-by: Matus Fabian <matfabia@cisco.com>
2018-12-18NAT44: nat44_add_del_lb_static_mapping enhancements (VPP-1514)Matus Fabian1-0/+5
Change-Id: I5419e06592b0402e911e132796368800321f355a Signed-off-by: Matus Fabian <matfabia@cisco.com>
2018-11-29NAT: syslog - sessions logging (VPP-1139)Matus Fabian1-0/+3
Change-Id: I6e0b7cf37c1a9ac66f8ac011db29504e57844ee9 Signed-off-by: Matus Fabian <matfabia@cisco.com>
2018-11-22NAT44: Apply transitory timeout on TCP RST (VPP-1494)Matus Fabian1-0/+1
RFC7857 section 2.2. Change-Id: I031af5fe379b72262e83fd8565c34fa1b772f2c8 Signed-off-by: Matus Fabian <matfabia@cisco.com>
2018-11-19NAT44: fix bug in TCP close with output-feature interface (VPP-1493)Matus Fabian1-0/+7
Change-Id: If8c883d6b1ee58de9a03012d3567ec82211a0225 Signed-off-by: Matus Fabian <matfabia@cisco.com>
2018-10-12NAT44: identity NAT fix (VPP-1441)Matus Fabian1-0/+7
Change-Id: Ic4affc54d15d08b9b730f6ec6146ee053b28b4b6 Signed-off-by: Matus Fabian <matfabia@cisco.com>
2018-10-08NAT44: do not create session record for identity mapping (VPP-1439)Matus Fabian1-18/+44
Change-Id: I39a3146a4e4ba8eadf50af7113b9ae6b1c1d688f Signed-off-by: Matus Fabian <matfabia@cisco.com>
2018-09-24NAT44: endpoint-dependent mode session timeout improvement (VPP-1423)Matus Fabian1-1/+1
Change-Id: I630f3da1ea4e6e50a50f1352c097becef1efe3c0 Signed-off-by: Matus Fabian <matfabia@cisco.com>
2018-09-21NAT: Refactoring / Housekeeping (VPP-1415)Matus Fabian1-220/+592
Change-Id: Ia3ce24cc94f9b2fb331ad62a4181ddcd41bc78ca Signed-off-by: Matus Fabian <matfabia@cisco.com>
2018-09-13NAT: TCP MSS clampingMatus Fabian1-0/+4
NAT plugin changes the MSS value in TCP SYN packets to avoid fragmentation. If the negotiated MSS value is greater than the configured value it is changed to the configured value. If the negotiated MSS value is smaller than the configured value it remains unchanged. Change-Id: Ic3c4f94a2f1b76e2bf79f50f3ad36a4097f3f188 Signed-off-by: Matus Fabian <matfabia@cisco.com>
2018-09-04NAT: add support for configurable port range (VPP-1346)Matus Fabian1-0/+19
Change-Id: I6882b6daa05db866fe6e78a62b380ec331507f74 Signed-off-by: Matus Fabian <matfabia@cisco.com>
2018-09-03NAT44: client-IP based session affinity for load-balancing (VPP-1297)Matus Fabian1-2/+18
Enable client-IP based session affinity per LB NAT rule with specific timeout. Change-Id: I9aade152e330218d21dfda99cc5e984d769ab806 Signed-off-by: Matus Fabian <matfabia@cisco.com>
2018-08-27NAT44: add support for session timeout (VPP-1272)Matus Fabian1-3/+14
NAT44 (vanilla/simple and endpoint-dependent mode) now lazily delete expired sessions. When inserting to session lookup hash and bucket is full, expired session is overwritten. Change-Id: Ib1b34959f60f0ca4f5b13525b1d41dd2f992288d Signed-off-by: Matus Fabian <matfabia@cisco.com>
2018-08-15VPP-1387:foreach outside address vector to find correct index when free ↵shubing guo1-2/+1
outside address and port Change-Id: Ie5452350a8ebe2c1b62085fcab50dbc0138d3ae2 Signed-off-by: shubing guo <guo.shubing@zte.com.cn>
2018-08-02NAT44: LB NAT - local backends in multiple VRFs (VPP-1345)Matus Fabian1-1/+3
Add support for local backends in multiple VRFs for load-balancing NAT rules. Change-Id: I64e6818bd67a7e69985003498cf1f16f7200c334 Signed-off-by: Matus Fabian <matfabia@cisco.com>
2018-07-10NAT44: multiple outside FIB tables (VPP-1314)Matus Fabian1-0/+8
Change-Id: I56eb15f8fd2d3049845287dc3df7870582764f8b Signed-off-by: Matus Fabian <matfabia@cisco.com>
2018-06-15NAT44: endpoint dependent mode (VPP-1273)Matus Fabian1-8/+26
To enable NAT plugin endpoint dependent mode add following to statrup config: nat { endpoint-dependent } Enable endpoint dependent filtering and mapping for all sessions. Move some existing functionality such as service load balancing, twice nat, out2in-only static mappings and unknown protocol dynamic translations, which use endpoint dependent lookup hash tables before. Basically split to vanilla NAT44 and extra features NAT44. Change-Id: I3925eb5ddcc8f1ec4cf6af4e2a618a7ec7aa9735 Signed-off-by: Matus Fabian <matfabia@cisco.com>
2018-05-28NAT44: code cleanup and refactor (VPP-1285)Matus Fabian1-187/+20
Change-Id: I088163f10ae5515d7a9115781cc13ef563fafed5 Signed-off-by: Matus Fabian <matfabia@cisco.com>
2018-05-17NAT44: nat44_del_session and nat44_user_session_details API update (VPP-1271)Matus Fabian1-15/+47
Change-Id: I484d79000c1bbd87ff83847cf567bf3414a719d3 Signed-off-by: Matus Fabian <matfabia@cisco.com>
2018-05-14NAT44: delete closed TCP session (VPP-1274)Matus Fabian1-0/+31
Change-Id: Id25b447bddccb7b321123e4abc4134e7261a0807 Signed-off-by: Matus Fabian <matfabia@cisco.com>
2018-05-08NAT44: TCP connection close detection (VPP-1266)Matus Fabian1-2/+28
Change-Id: Iba1cc1179ee80478e29888790a6476571d1904dc Signed-off-by: Matus Fabian <matfabia@cisco.com>
2018-04-19Add special Twice-NAT feature (VPP-1221)Juraj Sloboda1-10/+19
When enabled then Twice-NAT is applied only when source IP equals destination IP after DNAT Change-Id: I58a9d1d222b2a10c83eafffb2107f32c1b4aa3a8 Signed-off-by: Juraj Sloboda <jsloboda@cisco.com>
2018-04-18NAT44: recycle old sessions for forwarding bypass (VPP-1240)Matus Fabian1-0/+7
Change-Id: I7e6b0e7e91cc032b1685f35de5d84363a85158a5 Signed-off-by: Matus Fabian <matfabia@cisco.com>
2018-04-11NAT44: fix setting of flag SNAT_SESSION_FLAG_LOAD_BALANCING (VPP-1235)Matus Fabian1-1/+2
Change-Id: Ieeafb41d10959700bfd434cd455800af31944150 Signed-off-by: Matus Fabian <matfabia@cisco.com>
2018-03-24User session counters stay <= per-user limitMatthew Smith1-0/+12
When a user session is allocated/reused, only increase one of the session counters for that user if the counters are below the per-user limit. THis addresses a SEGV that arises after the following sequence of events: - an outside interface IP address is put in a pool - a user exceeds the number of per-user translations by an amount greater than the number of per-user translations (nsessions + nstaticsessions > 100 + 100) - the outside interface IP address is deleted and then added again (observed when using DHCP client, likely happens if address changed via CLI, API also) - the user sends more packets that should be translated When nsessions is > the per-user limit, nat_session_alloc_or_recycle() reclaims the oldest existing user session. When an outside address is deleted, the corresponding user sessions are deleted. If the counters were far above the per-user limit, the deletions wouldn't result in the counters dropping back below the limit. So no session could be reclaimed -> SEGV. Change-Id: I940bafba0fd5385a563e2ce87534688eb9469f12 Signed-off-by: Matthew Smith <mgsmith@netgate.com>
2018-01-25NAT44: add opaque string tag to static mapping APIs (VPP-1147)Matus Fabian1-2/+4
Change-Id: I620e2081285ca8ac5c2da8efc12fe6f540ea4fd1 Signed-off-by: Matus Fabian <matfabia@cisco.com>
2018-01-25NAT: nat.c refactor (split out CLI) (VPP-1140)Matus Fabian1-0/+6
Moved CLI from nat.c to nat44_cli.c Split "show nat44" to: show nat44 addresses show nat44 interfaces show nat44 static mappings show nat44 interface address show nat44 sessions detail show nat44 deterministic mappings show nat44 deterministic timeouts show nat44 deterministic sessions show nat workers Change-Id: I2d1be8941dd0e4a9e037f4a4d2cd192389beb8ed Signed-off-by: Matus Fabian <matfabia@cisco.com>
2018-01-22NAT44: asymmetrical static mapping rule (VPP-1135)Matus Fabian1-1/+1
add option to NAT44 static mapping API/CLI to make rule asymmetrical (rule match only out2in direction) Change-Id: If262a3ff375a24d3059f0de1f1ac387a4fe09475 Signed-off-by: Matus Fabian <matfabia@cisco.com>
2018-01-11NAT44: asymmetrical load balancing static mapping rule (VPP-1132)Matus Fabian1-1/+2
Add option to NAT44 load balancing static mapping API/CLI to make rule asymmetrical (rule match only in out2in direction). Change-Id: I325ecef5591e4bf44ce4469a24d44fe56c3bb2e9 Signed-off-by: Matus Fabian <matfabia@cisco.com>
2018-01-05Add support for 464XLAT NAT44 mode (VPP-1045)Juraj Sloboda1-0/+2
Change-Id: I24e7a26972bbbfcea100292b212b29ae7a349335 Signed-off-by: Juraj Sloboda <jsloboda@cisco.com>
2017-12-20Translate matching packets using NAT (VPP-1069)Juraj Sloboda1-0/+3
Add API function which enables forwarding of packets not matching existing translation or static mapping instead of dropping them. When forwarding is enabled matching packets will be translated while non-matching packets will be forwarded without translation. Change-Id: Ic13040cbad16d3a1ecdc3e02a497171bef6aa413 Signed-off-by: Juraj Sloboda <jsloboda@cisco.com>
2017-12-19NAT: Twice NAT44 (VPP-969)Matus Fabian1-10/+51
Translation of both source and destination addresses and ports for 1:1 NAT session initiated from outside network (ExternalIP K8 use case). Change-Id: Ic0000497cf71619aac996d6d580844f0ea0edc14 Signed-off-by: Matus Fabian <matfabia@cisco.com>