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2018-05-28NAT44: code cleanup and refactor (VPP-1285)Matus Fabian17-463/+631
Change-Id: I088163f10ae5515d7a9115781cc13ef563fafed5 Signed-off-by: Matus Fabian <matfabia@cisco.com>
2018-05-27VPP-1294: add missing feature arc constraintDave Barach1-1/+2
the ip4-dhcp-client-detect feature MUST run prior to nat44-out2in, or inbound dhcp broadcast packets will be dropped. Certain dhcp servers answer lease renewal dhcp-request packets with broadcast dhcp-acks, leading to unrecoverable lease loss. In detail, this constraint: VNET_FEATURE_INIT (ip4_snat_out2in, static) = { .arc_name = "ip4-unicast", .node_name = "nat44-out2in", .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa"), }; doesn't get the job done: ip4-unicast: [17] nat44-out2in [23] ip4-dhcp-client-detect [26] ip4-not-enabled Add a proper constraint: VNET_FEATURE_INIT (ip4_snat_out2in, static) = { .arc_name = "ip4-unicast", .node_name = "nat44-out2in", .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa", "ip4-dhcp-client-detect"), }; and the interface feature order is OK, at least in this regard: ip4-unicast: [17] ip4-dhcp-client-detect [18] nat44-out2in [26] ip4-not-enabled We need to carefully audit (especially) the ip4-unicast feature arc, which has [gasp] 37 features on it! Change-Id: I5e749ead7ab2a25d80839a331de6261e112977ad Signed-off-by: Dave Barach <dave@barachs.net>
2018-05-17NAT44: nat44_del_session and nat44_user_session_details API update (VPP-1271)Matus Fabian7-90/+246
Change-Id: I484d79000c1bbd87ff83847cf567bf3414a719d3 Signed-off-by: Matus Fabian <matfabia@cisco.com>
2018-05-14NAT44: delete closed TCP session (VPP-1274)Matus Fabian3-22/+68
Change-Id: Id25b447bddccb7b321123e4abc4134e7261a0807 Signed-off-by: Matus Fabian <matfabia@cisco.com>
2018-05-13Improve ipfix template packet rewrite constructionDave Barach1-9/+27
Instead of repeatedly cutting, pasting, and hacking to create a new callback, use vnet_flow_rewrite_generic_callback(). Add three arguments to the flow rewrite callback: (in) pointer to an array of report elements, (in) length of array, (out) pointer to the stream index Change existing code prototypes. Code owners encouraged to evaluate whether they can use the generic callback or not, at leisure. /* ipfix field definitions for a particular report */ typedef struct { u32 info_element; u32 size; } ipfix_report_element_t; Best generated like so: _(sourceIPv4Address, 4) \ _(destinationIPv4Address, 4) \ _(sourceTransportPort, 2) \ _(destinationTransportPort, 2) \ _(protocolIdentifier, 1) \ _(flowStartMicroseconds, 8) \ _(flowEndMicroseconds, 8) static ipfix_report_element_t simple_report_elements[] = { foreach_simple_report_ipfix_element }; ... /* Set up the ipfix report */ memset (&a, 0, sizeof (a)); a.is_add = 1 /* to enable the report */ ; a.domain_id = 1 /* pick a domain ID */ ; a.src_port = UDP_DST_PORT_ipfix /* src port for reports */ ; a.rewrite_callback = vnet_flow_rewrite_generic_callback; a.report_elements = simple_report_elements; a.n_report_elements = ARRAY_LEN (simple_report_elements); a.stream_indexp = &jim->stream_index; a.flow_data_callback = simple_flow_data_callback; /* Create the report */ rv = vnet_flow_report_add_del (frm, &a, &template_id); if (rv) return rv; ... Change-Id: If6131e6821d3a37a29269c0d58040cdf18ff05e4 Signed-off-by: Dave Barach <dave@barachs.net>
2018-05-10NAT44: sessions counters per user fix (VPP-1270)Matus Fabian1-6/+6
Change-Id: I6306b81e0e1c3e1c591f929a76bb265c1c1d0859 Signed-off-by: Matus Fabian <matfabia@cisco.com>
2018-05-08NAT44: TCP connection close detection (VPP-1266)Matus Fabian7-13/+131
Change-Id: Iba1cc1179ee80478e29888790a6476571d1904dc Signed-off-by: Matus Fabian <matfabia@cisco.com>
2018-05-04Flow: Rename IPFIX exporter.Ole Troan1-1/+1
Change-Id: I9363cf54b73f7cfd8622af6f1cb250438ea0d3b6 Signed-off-by: Ole Troan <ot@cisco.com>
2018-05-03NAT: fix bin API dump of static mappings.Milan Lenco1-2/+5
Static mappings with equal local and external IPs but different ports were dumped as identity mappings. Change-Id: Ifea7cef5b78aea4c2eb31cf1620185eeef2681e5 Signed-off-by: Milan Lenco <milan.lenco@pantheon.tech>
2018-05-03NAT44: fix VAT nat44_user_session_detailsMatus Fabian1-4/+5
Change-Id: If379247f0574fbfcca39e752684bf6c81b95187b 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>
2018-04-26NAT44: disable nat44-hairpinning feature for in-out interface (VPP-1255)Matus Fabian1-10/+20
Change-Id: Icd42abf4e35db550df496592cffce655f1987d68 Signed-off-by: Matus Fabian <matfabia@cisco.com>
2018-04-24NAT44: one-armed NAT and identity mapping (VPP-1212)Matus Fabian1-3/+10
Change-Id: I228728bacfca6056dc409a96de1bffb9cadcd3e6 Signed-off-by: Matus Fabian <matfabia@cisco.com>
2018-04-19Add special Twice-NAT feature (VPP-1221)Juraj Sloboda7-30/+94
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 Fabian4-17/+98
Change-Id: I7e6b0e7e91cc032b1685f35de5d84363a85158a5 Signed-off-by: Matus Fabian <matfabia@cisco.com>
2018-04-13NAT66: Do not translate if packet not aimed at outside interfaceJuraj Sloboda3-0/+55
Change-Id: Id5a2a90d81cc9cb87cb6fb89ac2f4ca3cbcb51e2 Signed-off-by: Juraj Sloboda <jsloboda@cisco.com>
2018-04-12NAT: disable CLI/API not supported in active mode (VPP-1234)Juraj Sloboda2-3/+215
When in deterministic mode disable nondeterministic CLI/API. When not in deterministic mode disable deterministic CLI/API. Change-Id: Ibf485c14612297e51d3815a6fde541542c8fe7ab Signed-off-by: Juraj Sloboda <jsloboda@cisco.com>
2018-04-12Handle DHCP replies with NAT44 forwarding enabledMatthew Smith1-48/+57
When NAT44 forwarding is disabled, if a DHCP server-to- client packet arrives on an outside interface, it is handled correctly by setting the next node to the next feature on the ip4-unicast feature arc, where it can be processed. When NAT44 forwarding is enabled, if a DHCP server-to- client packet arrives, it is not handled any differently than other packets and ends up going to ip4-lookup which results in the packet being dropped. Move the check for DHCP server-to-client packets outside of the block that is executed if forwarding is disabled so DHCP replies will be processed in either case. Change-Id: Ia795cce3fd459f3252c2c17d53bb88ceaeaafca4 Signed-off-by: Matthew Smith <mgsmith@netgate.com>
2018-04-11NAT44: fix setting of flag SNAT_SESSION_FLAG_LOAD_BALANCING (VPP-1235)Matus Fabian4-24/+36
Change-Id: Ieeafb41d10959700bfd434cd455800af31944150 Signed-off-by: Matus Fabian <matfabia@cisco.com>
2018-04-10when deleting l3 static mapping with addr_only,ahdj0071-1/+4
lb session with the same user maybe deleted. Change-Id: Ie58579cf4f8babb594f3c44aa185720134c58c3d Signed-off-by: ahdj007 <dong.juan1@zte.com.cn>
2018-04-09NAT44: don't add static mapping to resolution vector if failed (VPP-1225)Matus Fabian1-3/+27
Change-Id: I71660eb327124179ff200763c4743cc81dc6e1c6 Signed-off-by: Matus Fabian <matfabia@cisco.com>
2018-04-05DSLite: Implement new API call DSLITE_ADDRESS_DUMP.Jon Loeliger2-0/+67
Change-Id: I92ca28d3007f7ea43cd3e8b20659e400dfa6c75c Signed-off-by: Jon Loeliger <jdl@netgate.com>
2018-04-04NAT added FIB entries have a preference lower than API/CLINeale Ranns1-6/+6
Change-Id: Ia99490180683e8649784f7d9d18c509c3ca78438 Signed-off-by: Neale Ranns <nranns@cisco.com>
2018-04-04NAT44: prohibit multiple static mappings for a single local address (VPP-1224)Matus Fabian1-0/+11
Change-Id: I32b30210c2f1aec10a1b614d04f427662326a3d2 Signed-off-by: Matus Fabian <matfabia@cisco.com>
2018-04-04NAT44: fix static mapping for DHCP addressed interface deleting (VPP-1223)Matus Fabian1-4/+92
Change-Id: Ifb4d23059b7989c32a52eaf0c25c275b35e83010 Signed-off-by: Matus Fabian <matfabia@cisco.com>
2018-03-28NAT44: make 1:1NAT for DHCP addressed interface persistentMatus Fabian1-22/+53
Static mapping is not deleted from resolution vector after address is set on interface. Change-Id: Ib7c45ca2e307123d101248c5a1b17d130ac32cd0 Signed-off-by: Matus Fabian <matfabia@cisco.com>
2018-03-28NAT44: fix nat44_user_session_dump and nat44_del_session crash with one ↵Matus Fabian2-2/+2
worker (VPP-1213) Change-Id: I8e0c7ed2ff462b9ab59c233f56be262ec03c29ff Signed-off-by: Matus Fabian <matfabia@cisco.com>
2018-03-24User session counters stay <= per-user limitMatthew Smith3-17/+22
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 Fabian2-0/+6
Change-Id: I3e4bbfe205c86cb0839dd5c542f083dbe6bea881 Signed-off-by: Matus Fabian <matfabia@cisco.com>
2018-03-22NAT44: interface output feature and dst NAT (VPP-1200)Matus Fabian2-7/+78
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>
2018-03-21NAT44: fix removal of LB static mappings with same local address and port ↵Matus Fabian1-5/+35
pair (VPP-1199) Change-Id: Iad8c626e83bbc58d5c85b6736f5a3dd5bc9ceafb Signed-off-by: Matus Fabian <matfabia@cisco.com>
2018-03-16QoS recording and markingNeale Ranns2-6/+0
Change-Id: Ie5a50def4ec1e4a3b3404a8b6ab9ec248bc16744 Signed-off-by: Neale Ranns <nranns@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>
2018-03-09when exceed max reass,ahdj0071-6/+12
frag packet can't get reass. adding bihash,it can rewrite new hash value. so need to delete hash after compare hash value. Change-Id: I83b5c47890110e9a598b78cfbe8fcd27bbe291bb Signed-off-by: ahdj007 <dong.juan1@zte.com.cn>
2018-03-07NAT44: allow to configure one interface only as output or input feature ↵Matus Fabian1-0/+12
(VPP-1192) following is not possible: set interface nat44 out GigabitEthernet0/3/0 output-feature set interface nat44 out GigabitEthernet0/3/0 Change-Id: I1592cc18390881fda66f98316700886b8f5295f0 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>
2018-03-06reass frag_n should to be inited to 0ahdj0071-0/+1
Change-Id: I8a4a7a85e86acbfe411e6dfa22e3976d7d4c903b Signed-off-by: ahdj007 <dong.juan1@zte.com.cn>
2018-03-05NAT44 - unknown protocols work with forwardingMatthew Smith1-6/+9
If forwarding is enabled, inbound packets on an outside interface should not be dropped and instead pass on to the FIB lookup. This works for TCP and UDP but not other IP protocols. Enable it for unknown protocols. Change-Id: I1da84b5633a36b3e5e64079754db2fcc50f29819 Signed-off-by: Matthew Smith <mgsmith@netgate.com>
2018-03-02NAT44: interface output feature and service host direct access (VPP-1176)Matus Fabian2-6/+117
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>
2018-02-14NAT44 out2in DHCP client next nodeMatthew Smith1-8/+24
Call vnet_feature_next() for DHCP replies instead of using default ip4-lookup. This allows DHCP replies to reach an outside interface if it's configured as a DHCP client. Change-Id: Icce1cd68b21256fcd6b1fad6792c06578b0e4e36 Signed-off-by: Matthew Smith <mgsmith@netgate.com>
2018-02-14NAT44: run NAT nodes after ACL (VPP-1160)Matus Fabian1-15/+15
NAT input features run after acl-plugin-in-ip4-fa NAT output features run after acl-plugin-out-ip4-fa Change-Id: I1e4487a0d6fdb99a90b8db640d9ad0e0eb7347a5 Signed-off-by: Matus Fabian <matfabia@cisco.com>
2018-02-07Refactor vlib_buffer flagsDamjan Marion1-1/+1
Change-Id: I853386aebfe488ebb10328435b81b6e3403c5dd0 Signed-off-by: Damjan Marion <damarion@cisco.com>
2018-02-05NAT64: Run nat64-expire-worker-walk only when NAT64 is configured (VPP-1162)Matus Fabian2-4/+48
Change-Id: Ic5e8d74bf5ac84cce5661de44778c89541c67636 Signed-off-by: Matus Fabian <matfabia@cisco.com>
2018-01-31NAT66 1:1 mapping (VPP-1108)Matus Fabian8-1/+1373
Support the 1:1 translation of source address for IPv6 Change-Id: I934d18e5ec508bf7422d796ee5f172b79c048011 Signed-off-by: Matus Fabian <matfabia@cisco.com>
2018-01-31NAT44: in2out output feature skip translation for already translated packets ↵Matus Fabian2-15/+74
(VPP-1156) Change-Id: I5395245c9e49f741a949ada1f725c34f9379c249 Signed-off-by: Matus Fabian <matfabia@cisco.com>
2018-01-31NAT44: Delete dynamic sessions matching new 1:1NAT (VPP-1158)Matus Fabian1-8/+52
Change-Id: Ib99b597502b8335e57ecfa122b12e2e5aa45ee1a Signed-off-by: Matus Fabian <matfabia@cisco.com>
2018-01-31NAT44: nat44_static_mapping_details protocol=0 if addr_only=0 (VPP-1158)Matus Fabian2-13/+19
Change-Id: I1e3cfc751e7657464fc850dc56ddf763df45f62e Signed-off-by: Matus Fabian <matfabia@cisco.com>
2018-01-30NAT: add missing CLI and API documentation (VPP-1142)Matus Fabian2-0/+105
Change-Id: I4e93595665b8d0e373c4df27311c27a51222961c Signed-off-by: Matus Fabian <matfabia@cisco.com>
2018-01-30NAT: replace format_vnet_sw_interface_name with format_vnet_sw_if_index_name ↵Matus Fabian3-39/+33
(VPP-1149) Avoid crash when interface was deleted. Change-Id: I2ac3031c13ca5ad3360495e1c4cb90b0002be5ff Signed-off-by: Matus Fabian <matfabia@cisco.com>