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2018-05-28NAT44: code cleanup and refactor (VPP-1285)Matus Fabian1-84/+83
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/+11
Change-Id: I484d79000c1bbd87ff83847cf567bf3414a719d3 Signed-off-by: Matus Fabian <matfabia@cisco.com>
2018-05-14NAT44: delete closed TCP session (VPP-1274)Matus Fabian1-14/+23
Change-Id: Id25b447bddccb7b321123e4abc4134e7261a0807 Signed-off-by: Matus Fabian <matfabia@cisco.com>
2018-05-08NAT44: TCP connection close detection (VPP-1266)Matus Fabian1-1/+19
Change-Id: Iba1cc1179ee80478e29888790a6476571d1904dc Signed-off-by: Matus Fabian <matfabia@cisco.com>
2018-05-03NAT44 segv on unknown proto on inside interfaceMatthew Smith1-22/+25
When a packet with an unknown proto arrives on an inside interface and there are no existing sessions for the source address, a segv occurs. snat_in2out_unknown_proto() finds the head of the sessions dlist, fetches the address of the next element using head->next, and then dereferences the next element. On the first packet received from a source address, head->next is ~0, so this results in a segv. Check that the session list is not empty before trying to traverse it. Also removed unnecessary lookup against tsm->user_hash. Prior call to nat_user_get_or_create() already performed that lookup and added a user if one didn't exist. Change-Id: If73e79aa2f8e3962ab7b876ecf55aea40d7a5472 Signed-off-by: Matthew Smith <mgsmith@netgate.com>
2018-04-19Add special Twice-NAT feature (VPP-1221)Juraj Sloboda1-0/+2
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 Fabian1-7/+22
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 Fabian1-9/+11
Change-Id: Ieeafb41d10959700bfd434cd455800af31944150 Signed-off-by: Matus Fabian <matfabia@cisco.com>
2018-03-24User session counters stay <= per-user limitMatthew Smith1-14/+7
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>
2018-03-23NAT44: fix ICMP checksum update crash (VPP-1205)Matus Fabian1-0/+3
Change-Id: I3e4bbfe205c86cb0839dd5c542f083dbe6bea881 Signed-off-by: Matus Fabian <matfabia@cisco.com>
2018-03-22NAT44: interface output feature and dst NAT (VPP-1200)Matus Fabian1-6/+27
Do not translate packet which go out via nat44-in2out-output and was tranlated in nat44-out2in before. On way back forward packet to nat44-in2out node. Change-Id: I934d69856f0178c86ff879bc691c9e074b8485c8 Signed-off-by: Matus Fabian <matfabia@cisco.com>
2018-03-12NAT44: fix nat_not_translate_output_feature in dual loop (VPP-1194)Matus Fabian1-2/+2
Change-Id: Icb858414145db0e5fef495e155903b3b935e50ba Signed-off-by: Matus Fabian <matfabia@cisco.com>
2018-03-12NAT44: fix nat_not_translate_output_feature for ICMP (VPP-1191)Matus Fabian1-8/+7
Change-Id: I1552e1418b704fdf1f1fa2c0174313b9b82a37a3 Signed-off-by: Matus Fabian <matfabia@cisco.com>
2018-03-06when lb tcp in2out flow,ahdj0071-0/+1
in2out and out2in protocol are not same Change-Id: I4ce680ad1f088cb079e1f2aeb15ca59225fca0d1 Signed-off-by: ahdj007 <dong.juan1@zte.com.cn>
2018-03-02NAT44: interface output feature and service host direct access (VPP-1176)Matus Fabian1-2/+63
forwarding mode: session initiaded from service host - translate session initiaded from remote host - do not translate Change-Id: I48170ee8e4ad14d3d3083ee31a40ef8d10d6ff32 Signed-off-by: Matus Fabian <matfabia@cisco.com>
2018-01-31NAT44: in2out output feature skip translation for already translated packets ↵Matus Fabian1-14/+73
(VPP-1156) Change-Id: I5395245c9e49f741a949ada1f725c34f9379c249 Signed-off-by: Matus Fabian <matfabia@cisco.com>
2018-01-26NAT44: fix ICMP error translation for endpoint dependent sessions (VPP-1150)Matus Fabian1-2/+75
Change-Id: I85c799f28c4246884107e569a36482af10d9be9d Signed-off-by: Matus Fabian <matfabia@cisco.com>
2018-01-11NAT44: asymmetrical load balancing static mapping rule (VPP-1132)Matus Fabian1-3/+3
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>
2018-01-08NAT64: IPFix (VPP-1106)Matus Fabian1-9/+13
Change-Id: Ib90dc5613c9fdac0344b3bd7f163e2f7163c64d8 Signed-off-by: Matus Fabian <matfabia@cisco.com>
2018-01-05Add support for 464XLAT NAT44 mode (VPP-1045)Juraj Sloboda1-0/+3
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 Fabian1-373/+102
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>
2017-12-13NAT64: multi-thread support (VPP-891)Matus Fabian1-2/+2
Change-Id: Iebf859b6d86482e4465423bad598eecf87e53ec4 Signed-off-by: Matus Fabian <matfabia@cisco.com>
2017-11-30Fix variable mismatchJuraj Sloboda1-1/+1
Change-Id: Iae2f9f9652cecdf7e754700b2fe107ad61ff8ff9 Signed-off-by: Juraj Sloboda <jsloboda@cisco.com>
2017-11-07SNAT: IP fragmentation (VPP-890)Matus Fabian1-1/+416
Translation of fragmented packets. Change-Id: I9b1f2e9433ce273638080f32c2d3bff39c49899d Signed-off-by: Matus Fabian <matfabia@cisco.com>
2017-11-07NAT: DS-Lite (VPP-1040)Matus Fabian1-6/+12
Dual-Stack Lite enables a broadband service provider to share IPv4 addresses among customers by combining two well-known technologies: IPv4-in-IPv6 and NAT. Change-Id: I039740f8548c623cd1ac89b8ecda1a6cc4aafb9c Signed-off-by: Matus Fabian <matfabia@cisco.com>
2017-10-25One armed NAT (VPP-1035)Matus Fabian1-2/+2
Use a single physical interface in order to accomplish NAT44/NAT64. Change-Id: I0c8138953a7a4075df306172e125abad771315e4 Signed-off-by: Matus Fabian <matfabia@cisco.com>
2017-10-09NAT: hairpinning rework (VPP-1003)Matus Fabian1-13/+101
Change-Id: I7c6911cd6ac366fe62675fd0ff8b0246a25ea1db Signed-off-by: Matus Fabian <matfabia@cisco.com>
2017-10-09NAT: fixed ICMP broken translation for GRE tunnel interface (VPP-1008)Matus Fabian1-15/+7
Change-Id: Ie3245b96c511cc30915e70e8c881f445291a38c2 Signed-off-by: Matus Fabian <matfabia@cisco.com>
2017-09-25NAT: session number limitation to avoid running out of memory crash (VPP-984)Matus Fabian1-17/+52
Change-Id: I7f18f8c4ba609d96950dc1f833feb967d4a099b7 Signed-off-by: Matus Fabian <matfabia@cisco.com>
2017-09-21NAT: remove worker_by_out lookup hash table (VPP-989)Matus Fabian1-59/+20
Change-Id: Ibcd2cf22348ae5a72770a8f8ad25cbe8df7fd390 Signed-off-by: Matus Fabian <matfabia@cisco.com>
2017-09-20NAT: move session and user lookup tables to per thread data (VPP-986)Matus Fabian1-51/+67
Change-Id: I41a51bb36e31e05c76fef0b34fe006afbee27729 Signed-off-by: Matus Fabian <matfabia@cisco.com>
2017-09-15Modify return value of snat_out2in_lb(VPP-985)dongjuan1-5/+6
in order to trace session_index Change-Id: I4433155fbe21635f8a997523e2c7900c6a7569af Signed-off-by: dongjuan <dong.juan1@zte.com.cn>
2017-09-12NAT: fixed bug in snat_alloc_outside_address_and_port (VPP-981)Matus Fabian1-2/+2
Change-Id: I6c5eccd4193c44604da3fd27c108defe71b38a4b Signed-off-by: Matus Fabian <matfabia@cisco.com>
2017-09-10NAT: fixed hairpinning for in2out translation as an output feature (VPP-976)Matus Fabian1-7/+19
Test whether the hairpinning flag is set only for packets from NAT inside interface. Change-Id: I4a4fdd2084a76a70ce9dfe3e2b8332c02fa2eccd Signed-off-by: Matus Fabian <matfabia@cisco.com>
2017-09-06NAT: Destination NAT44 with load-balancing (VPP-954)Matus Fabian1-21/+232
added load-balancing static mappings with unequal load support Change-Id: Ie505e41f24d46f812b94dd28bdafe3dc170a6060 Signed-off-by: Matus Fabian <matfabia@cisco.com>
2017-08-29Fix static mapping lookup issue for NAT pluginHongjun Ni1-0/+1
Change-Id: Ic99d1db5360f69126b23bb2b78f29d6404cbbae9 Signed-off-by: Hongjun Ni <hongjun.ni@intel.com>
2017-08-23NAT: Rename snat plugin to nat (VPP-955)Matus Fabian1-0/+3454
Change-Id: I30a7e3da7a4efc6038a91e27b48045d4b07e2764 Signed-off-by: Matus Fabian <matfabia@cisco.com>