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dkim=pass (2048-bit key, unprotected) header.d=canonical.com header.i=@canonical.com header.a=rsa-sha256 header.s=20210705 header.b=L3fCyvyZ Received: from smtp-relay-canonical-0.canonical.com (smtp-relay-canonical-0.canonical.com [185.125.188.120]) by smtp3.osuosl.org (Postfix) with ESMTPS id BC743605AC for ; Tue, 12 Mar 2024 19:45:07 +0000 (UTC) Received: from localhost.localdomain (2.general.kalcok.uk.vpn [10.172.196.41]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by smtp-relay-canonical-0.canonical.com (Postfix) with ESMTPSA id 02AC740F03; Tue, 12 Mar 2024 19:45:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=canonical.com; s=20210705; t=1710272704; bh=8DyE3mWwg3Yxm+o65/CeCZYCFLtNpRsJ17lq9JLGk5w=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=L3fCyvyZdEX2pA6qpvoeO7eI3c9rBQL2oXPyChu14kMYNsUEu797+XvTFC76fBSD5 3kGV5+GH/Fbrxebo2NVdhP3Hpht+E0VQPg6xEWi4Kk5d2K5Q4Rx086bkLHVp0VQjwg oTb5cWWddZz9nIltkrNBlClRQAjGf1743sYWEAlo4E67RhaZ1OSCjEDQBRoa12wS4e /0XpT6heQQPPuBoxxWtXDouuRa8HDfDMxAoXc3aZ7z+FbUB+bbnYKWHIItui8eriyF zfc4xSBNTf3Lg5bYcwQPJP4+GXHMfTMbvFSaxKNaev06O5DWjSxMmiazDyRNIxL0vH mNZ7Iyw2qFVAg== From: Martin Kalcok To: dev@openvswitch.org Date: Tue, 12 Mar 2024 20:44:25 +0100 Message-Id: <20240312194426.88840-1-martin.kalcok@canonical.com> X-Mailer: git-send-email 2.40.1 In-Reply-To: References: MIME-Version: 1.0 Subject: [ovs-dev] [Patch ovn v2 1/2] actions: Enable specifying zone for ct_commit. X-BeenThere: ovs-dev@openvswitch.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: ovs-dev-bounces@openvswitch.org Sender: "dev" Action `ct_commit` currently does not allow specifying zone into which connection is committed. For example, in LR datapath, the `ct_commit` will always use the DNAT zone. This change adds option to use `ct_commit(snat)` or `ct_commit(dnat)` to explicitly specify the zone into which the connection will be committed. It also comes with new feature flag OVN_FEATURE_CT_COMMIT_TO_ZONE to avoid incompatibility between northd and controller in case when controller does not suport these actions. Original behavior of `ct_commit` without the arguments remains unchanged. Signed-off-by: Martin Kalcok --- controller/chassis.c | 8 ++++++++ include/ovn/actions.h | 9 +++++++++ include/ovn/features.h | 1 + lib/actions.c | 29 ++++++++++++++++++++++++++++- northd/en-global-config.c | 10 ++++++++++ northd/en-global-config.h | 1 + ovn-sb.xml | 10 ++++++++++ tests/ovn.at | 7 +++++++ 8 files changed, 74 insertions(+), 1 deletion(-) diff --git a/controller/chassis.c b/controller/chassis.c index ad75df288..9bb2eba95 100644 --- a/controller/chassis.c +++ b/controller/chassis.c @@ -371,6 +371,7 @@ chassis_build_other_config(const struct ovs_chassis_cfg *ovs_cfg, smap_replace(config, OVN_FEATURE_FDB_TIMESTAMP, "true"); smap_replace(config, OVN_FEATURE_LS_DPG_COLUMN, "true"); smap_replace(config, OVN_FEATURE_CT_COMMIT_NAT_V2, "true"); + smap_replace(config, OVN_FEATURE_CT_COMMIT_TO_ZONE, "true"); } /* @@ -516,6 +517,12 @@ chassis_other_config_changed(const struct ovs_chassis_cfg *ovs_cfg, return true; } + if (!smap_get_bool(&chassis_rec->other_config, + OVN_FEATURE_CT_COMMIT_TO_ZONE, + false)) { + return true; + } + return false; } @@ -648,6 +655,7 @@ update_supported_sset(struct sset *supported) sset_add(supported, OVN_FEATURE_FDB_TIMESTAMP); sset_add(supported, OVN_FEATURE_LS_DPG_COLUMN); sset_add(supported, OVN_FEATURE_CT_COMMIT_NAT_V2); + sset_add(supported, OVN_FEATURE_CT_COMMIT_TO_ZONE); } static void diff --git a/include/ovn/actions.h b/include/ovn/actions.h index 49fb96fc6..ce9597cf5 100644 --- a/include/ovn/actions.h +++ b/include/ovn/actions.h @@ -259,11 +259,20 @@ struct ovnact_ct_next { uint8_t ltable; /* Logical table ID of next table. */ }; +/* Conntrack zone to be used for commiting CT entries by the action. + * DEFAULT uses default zone for given datapath. */ +enum ovnact_ct_zone { + OVNACT_CT_ZONE_DEFAULT, + OVNACT_CT_ZONE_SNAT, + OVNACT_CT_ZONE_DNAT, +}; + /* OVNACT_CT_COMMIT_V1. */ struct ovnact_ct_commit_v1 { struct ovnact ovnact; uint32_t ct_mark, ct_mark_mask; ovs_be128 ct_label, ct_label_mask; + enum ovnact_ct_zone zone; }; /* Type of NAT used for the particular action. diff --git a/include/ovn/features.h b/include/ovn/features.h index 08f1d8288..35a5d8ba0 100644 --- a/include/ovn/features.h +++ b/include/ovn/features.h @@ -28,6 +28,7 @@ #define OVN_FEATURE_FDB_TIMESTAMP "fdb-timestamp" #define OVN_FEATURE_LS_DPG_COLUMN "ls-dpg-column" #define OVN_FEATURE_CT_COMMIT_NAT_V2 "ct-commit-nat-v2" +#define OVN_FEATURE_CT_COMMIT_TO_ZONE "ct-commit-to-zone" /* OVS datapath supported features. Based on availability OVN might generate * different types of openflows. diff --git a/lib/actions.c b/lib/actions.c index a45874dfb..9e27a68a5 100644 --- a/lib/actions.c +++ b/lib/actions.c @@ -707,6 +707,7 @@ static void parse_ct_commit_v1_arg(struct action_context *ctx, struct ovnact_ct_commit_v1 *cc) { + cc->zone = OVNACT_CT_ZONE_DEFAULT; if (lexer_match_id(ctx->lexer, "ct_mark")) { if (!lexer_force_match(ctx->lexer, LEX_T_EQUALS)) { return; @@ -737,6 +738,10 @@ parse_ct_commit_v1_arg(struct action_context *ctx, return; } lexer_get(ctx->lexer); + } else if (lexer_match_id(ctx->lexer, "snat")) { + cc->zone = OVNACT_CT_ZONE_SNAT; + } else if (lexer_match_id(ctx->lexer, "dnat")) { + cc->zone = OVNACT_CT_ZONE_DNAT; } else { lexer_syntax_error(ctx->lexer, NULL); } @@ -800,6 +805,18 @@ format_CT_COMMIT_V1(const struct ovnact_ct_commit_v1 *cc, struct ds *s) ds_put_hex(s, &cc->ct_label_mask, sizeof cc->ct_label_mask); } } + if (cc->zone != OVNACT_CT_ZONE_DEFAULT) { + if (ds_last(s) != '(') { + ds_put_cstr(s, ", "); + } + + if (cc->zone == OVNACT_CT_ZONE_SNAT) { + ds_put_cstr(s, "snat"); + } else if (cc->zone == OVNACT_CT_ZONE_DNAT) { + ds_put_cstr(s, "dnat"); + } + } + if (!ds_chomp(s, '(')) { ds_put_char(s, ')'); } @@ -814,7 +831,17 @@ encode_CT_COMMIT_V1(const struct ovnact_ct_commit_v1 *cc, struct ofpact_conntrack *ct = ofpact_put_CT(ofpacts); ct->flags = NX_CT_F_COMMIT; ct->recirc_table = NX_CT_RECIRC_NONE; - ct->zone_src.field = mf_from_id(MFF_LOG_CT_ZONE); + + if (ep->is_switch) { + ct->zone_src.field = mf_from_id(MFF_LOG_CT_ZONE); + } else { + if (cc->zone == OVNACT_CT_ZONE_SNAT) { + ct->zone_src.field = mf_from_id(MFF_LOG_SNAT_ZONE); + } else { + ct->zone_src.field = mf_from_id(MFF_LOG_DNAT_ZONE); + } + } + ct->zone_src.ofs = 0; ct->zone_src.n_bits = 16; diff --git a/northd/en-global-config.c b/northd/en-global-config.c index 34e393b33..193deaebc 100644 --- a/northd/en-global-config.c +++ b/northd/en-global-config.c @@ -370,6 +370,7 @@ northd_enable_all_features(struct ed_type_global_config *data) .fdb_timestamp = true, .ls_dpg_column = true, .ct_commit_nat_v2 = true, + .ct_commit_to_zone = true, }; } @@ -439,6 +440,15 @@ build_chassis_features(const struct sbrec_chassis_table *sbrec_chassis_table, chassis_features->ct_commit_nat_v2) { chassis_features->ct_commit_nat_v2 = false; } + + bool ct_commit_to_zone = + smap_get_bool(&chassis->other_config, + OVN_FEATURE_CT_COMMIT_TO_ZONE, + false); + if (!ct_commit_to_zone && + chassis_features->ct_commit_to_zone) { + chassis_features->ct_commit_to_zone = false; + } } } diff --git a/northd/en-global-config.h b/northd/en-global-config.h index 38d732808..842bcee70 100644 --- a/northd/en-global-config.h +++ b/northd/en-global-config.h @@ -20,6 +20,7 @@ struct chassis_features { bool fdb_timestamp; bool ls_dpg_column; bool ct_commit_nat_v2; + bool ct_commit_to_zone; }; struct global_config_tracked_data { diff --git a/ovn-sb.xml b/ovn-sb.xml index ac4e585f2..f5f2208da 100644 --- a/ovn-sb.xml +++ b/ovn-sb.xml @@ -1405,6 +1405,8 @@
ct_commit { ct_mark=value[/mask]; };
ct_commit { ct_label=value[/mask]; };
ct_commit { ct_mark=value[/mask]; ct_label=value[/mask]; };
+
ct_commit(snat);
+
ct_commit(dnat);

Commit the flow to the connection tracking entry associated with it @@ -1421,6 +1423,14 @@ in order to have specific bits set.

+

+ In Logical Router Datapath, parameters ct_commit(snat) + or ct_commit(dnat) can be used to explicitly specify + into which zone should be connection committed. Without this + parameter, the connection is committed to the default zone for the + Datapath. These parameters have no effect in Logical Switch Datapath. +

+

Note that if you want processing to continue in the next table, you must execute the next action after diff --git a/tests/ovn.at b/tests/ovn.at index d26c95054..11e6430ed 100644 --- a/tests/ovn.at +++ b/tests/ovn.at @@ -1349,6 +1349,13 @@ ct_commit(ct_label=18446744073709551615); ct_commit(ct_label=18446744073709551616); Decimal constants must be less than 2**64. +ct_commit(dnat); + encodes as ct(commit,zone=NXM_NX_REG13[0..15]) + has prereqs ip +ct_commit(snat); + encodes as ct(commit,zone=NXM_NX_REG13[0..15]) + has prereqs ip + ct_mark = 12345 Field ct_mark is not modifiable. ct_label = 0xcafe From patchwork Tue Mar 12 19:44:26 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Martin Kalcok X-Patchwork-Id: 1911345 X-Patchwork-Delegate: dceara@redhat.com Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; 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Tue, 12 Mar 2024 19:45:15 +0000 (UTC) Received: from localhost.localdomain (2.general.kalcok.uk.vpn [10.172.196.41]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by smtp-relay-canonical-0.canonical.com (Postfix) with ESMTPSA id D4B5D40F03; Tue, 12 Mar 2024 19:45:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=canonical.com; s=20210705; t=1710272714; bh=GqpRz/gqhndbBg9WsGoSpt+7rztKrdQtbFar0dw0olg=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=WG37XqlN0T4mKpHLhVyH+08ZXHkQTdjo3XamoKd89jMM0q6KiIAwLybT68xU+NKZe vhXc4Vh1cinvKIvO3oeLKmdOUtlwTB9MBhJn5EW20zJtrUVyHQPbaFJt6j343YjMAe rkbfHeLOD03O0kfaveafSb+9bnGP6BwbMt8k3V5d5VmWiJXCd/+EDH/hfQtesyyE35 HoNGwZ/hzLMSs+ullrDgm1Ia5CcBCOwyp5cAhnRN7bR5TOWYnGltfIeFVocOLvAZnN aScT2aIVAbvxYImkbc86ykimcEQUaHHBUGKo5dUAp7nJM7Etm9DC5yccmyJLZxGm8u NYeO/Ip3PNSnw== From: Martin Kalcok To: dev@openvswitch.org Date: Tue, 12 Mar 2024 20:44:26 +0100 Message-Id: <20240312194426.88840-2-martin.kalcok@canonical.com> X-Mailer: git-send-email 2.40.1 In-Reply-To: References: MIME-Version: 1.0 Subject: [ovs-dev] [Patch ovn v2 2/2] northd: Fix direct access to SNAT network on DR. X-BeenThere: ovs-dev@openvswitch.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: ovs-dev-bounces@openvswitch.org Sender: "dev" This change fixes bug that breaks ability of machines from external networks to communicate with machines in SNATed networks (specifically when using a Distributed router). Currently when a machine (S1) on an external network tries to talk over TCP with a machine (A1) in a network that has enabled SNAT, the connection is established successfully. However after the three-way handshake, any packets that come from the A1 machine will have their source address translated by the Distributed router, breaking the communication. Existing rule in `build_lrouter_out_snat_flow` that decides which packets should be SNATed already tries to avoid SNATing packets in reply direction with `(!ct.trk || !ct.rpl)`. However, previous stages in the distributed LR egress pipeline do not initiate the CT state. Additionally we need to commit new connections that originate from external networks into CT, so that the packets in the reply direction can be properly identified. Rationale: In my original RFC [0], there were questions about the motivation for fixing this issue. I'll try to summarize why I think this is a bug that should be fixed. 1. Current implementation for Distributed router already tries to avoid SNATing packets in the reply direction, it's just missing initialized CT states to make proper decisions. 2. This same scenario works with Gateway Router. I tested with following setup: foo -- R1 -- join - R3 -- alice | bar ----------R2 R1 is a Distributed router with SNAT for foo. R2 is a Gateway router with SNAT for bar. R3 is a Gateway router with no SNAT. Using 'alice1' as a client I was able to talk over TCP with 'bar1' but connection with 'foo1' failed. 3. Regarding security and "leaking" of internal IPs. Reading through RFC 4787 [1], 5382 [2] and their update in 7857 [3], the specifications do not seem to mandate that SNAT implementations must filter incoming traffic destined directly to the internal network. Sections like "5. Filtering Behavior" in 4787 and "4.3 Externally Initiated Connections" in 5382 describe only behavior for traffic destined to external IP/Port associated with NAT on the device that performs NAT. Besides, with the current implementation, it's already possible to scan the internal network with pings and TCP syn scanning. 4. We do have customers/clouds that depend on this functionality. This is a scenario that used to work in Openstack with ML2/OVS and migrating those clouds to ML2/OVN would break it. [0]https://mail.openvswitch.org/pipermail/ovs-dev/2024-February/411670.html [1]https://datatracker.ietf.org/doc/html/rfc4787 [2]https://datatracker.ietf.org/doc/html/rfc5382 [3]https://datatracker.ietf.org/doc/html/rfc7857 Signed-off-by: Martin Kalcok --- northd/northd.c | 68 ++++++++++++++++++++++++++++++++-------- northd/ovn-northd.8.xml | 29 +++++++++++++++++ tests/ovn-northd.at | 33 ++++++++++++++++---- tests/system-ovn.at | 69 +++++++++++++++++++++++++++++++++++++++++ 4 files changed, 180 insertions(+), 19 deletions(-) diff --git a/northd/northd.c b/northd/northd.c index 2c3560ce2..25af52d5a 100644 --- a/northd/northd.c +++ b/northd/northd.c @@ -14438,20 +14438,27 @@ build_lrouter_out_is_dnat_local(struct lflow_table *lflows, static void build_lrouter_out_snat_match(struct lflow_table *lflows, - const struct ovn_datapath *od, - const struct nbrec_nat *nat, struct ds *match, - bool distributed_nat, int cidr_bits, bool is_v6, - struct ovn_port *l3dgw_port, - struct lflow_ref *lflow_ref) + const struct ovn_datapath *od, + const struct nbrec_nat *nat, + struct ds *match, + bool distributed_nat, int cidr_bits, + bool is_v6, + struct ovn_port *l3dgw_port, + struct lflow_ref *lflow_ref, + bool is_reverse) { ds_clear(match); - ds_put_format(match, "ip && ip%c.src == %s", is_v6 ? '6' : '4', + ds_put_format(match, "ip && ip%c.%s == %s", + is_v6 ? '6' : '4', + is_reverse ? "dst" : "src", nat->logical_ip); if (!od->is_gw_router) { /* Distributed router. */ - ds_put_format(match, " && outport == %s", l3dgw_port->json_key); + ds_put_format(match, " && %s == %s", + is_reverse ? "inport" : "outport", + l3dgw_port->json_key); if (od->n_l3dgw_ports) { ds_put_format(match, " && is_chassis_resident(\"%s\")", distributed_nat @@ -14462,7 +14469,7 @@ build_lrouter_out_snat_match(struct lflow_table *lflows, if (nat->allowed_ext_ips || nat->exempted_ext_ips) { lrouter_nat_add_ext_ip_match(od, lflows, match, nat, - is_v6, false, cidr_bits, + is_v6, is_reverse, cidr_bits, lflow_ref); } } @@ -14489,7 +14496,8 @@ build_lrouter_out_snat_stateless_flow(struct lflow_table *lflows, uint16_t priority = cidr_bits + 1; build_lrouter_out_snat_match(lflows, od, nat, match, distributed_nat, - cidr_bits, is_v6, l3dgw_port, lflow_ref); + cidr_bits, is_v6, l3dgw_port, lflow_ref, + false); if (!od->is_gw_router) { /* Distributed router. */ @@ -14536,7 +14544,7 @@ build_lrouter_out_snat_in_czone_flow(struct lflow_table *lflows, build_lrouter_out_snat_match(lflows, od, nat, match, distributed_nat, cidr_bits, is_v6, l3dgw_port, - lflow_ref); + lflow_ref, false); if (od->n_l3dgw_ports) { priority += 128; @@ -14585,12 +14593,14 @@ build_lrouter_out_snat_flow(struct lflow_table *lflows, struct ds *actions, bool distributed_nat, struct eth_addr mac, int cidr_bits, bool is_v6, struct ovn_port *l3dgw_port, - struct lflow_ref *lflow_ref) + struct lflow_ref *lflow_ref, + const struct chassis_features *features) { if (strcmp(nat->type, "snat") && strcmp(nat->type, "dnat_and_snat")) { return; } + struct ds match_all_from_snat = DS_EMPTY_INITIALIZER; ds_clear(actions); /* The priority here is calculated such that the @@ -14599,7 +14609,9 @@ build_lrouter_out_snat_flow(struct lflow_table *lflows, uint16_t priority = cidr_bits + 1; build_lrouter_out_snat_match(lflows, od, nat, match, distributed_nat, - cidr_bits, is_v6, l3dgw_port, lflow_ref); + cidr_bits, is_v6, l3dgw_port, lflow_ref, + false); + ds_clone(&match_all_from_snat, match); if (!od->is_gw_router) { /* Distributed router. */ @@ -14624,6 +14636,36 @@ build_lrouter_out_snat_flow(struct lflow_table *lflows, priority, ds_cstr(match), ds_cstr(actions), &nat->header_, lflow_ref); + + /* For the SNAT networks, we need to make sure that connections are + * properly tracked so we can decide whether to perform SNAT on traffic + * exiting the network. */ + if (features->ct_commit_to_zone && !strcmp(nat->type, "snat") && + !od->is_gw_router) { + /* For traffic that comes from SNAT network, initiate CT state before + * entering S_ROUTER_OUT_SNAT to allow matching on various CT states. + */ + ovn_lflow_add(lflows, od, S_ROUTER_OUT_POST_UNDNAT, 70, + ds_cstr(&match_all_from_snat), "ct_snat; ", + lflow_ref); + + build_lrouter_out_snat_match(lflows, od, nat, match, + distributed_nat, cidr_bits, is_v6, + l3dgw_port, lflow_ref, true); + + /* New traffic that goes into SNAT network is committed to CT to avoid + * SNAT-ing replies.*/ + ovn_lflow_add(lflows, od, S_ROUTER_OUT_SNAT, priority, + ds_cstr(match), "ct_snat;", + lflow_ref); + + ds_put_cstr(match, "&& ct.new"); + ovn_lflow_add(lflows, od, S_ROUTER_OUT_POST_SNAT, priority, + ds_cstr(match), "ct_commit(snat); next; ", + lflow_ref); + } + + ds_destroy(&match_all_from_snat); } static void @@ -15167,7 +15209,7 @@ build_lrouter_nat_defrag_and_lb( } else { build_lrouter_out_snat_flow(lflows, od, nat, match, actions, distributed_nat, mac, cidr_bits, is_v6, - l3dgw_port, lflow_ref); + l3dgw_port, lflow_ref, features); } /* S_ROUTER_IN_ADMISSION - S_ROUTER_IN_IP_INPUT */ diff --git a/northd/ovn-northd.8.xml b/northd/ovn-northd.8.xml index 17b414144..ce6fd1270 100644 --- a/northd/ovn-northd.8.xml +++ b/northd/ovn-northd.8.xml @@ -4869,6 +4869,13 @@ nd_ns {

    +
  • + A priority-70 logical flow is added that initiates CT state for + traffic that is configured to be SNATed on Distributed routers. + This allows the next table, lr_out_snat, to + effectively match on various CT states. +
    • +
  • A priority-50 logical flow is added that commits any untracked flows from the previous table lr_out_undnat for Gateway @@ -5061,6 +5068,18 @@ nd_ns {
    • +
  • + An additional flow is added for traffic that goes in opposite + direction (i.e. it enters a network with configured SNAT). Where the + flow above matched on ip4.src == A && outport + == GW, this flow matches on ip4.dst == + A && inport == GW. A CT state is + initiated for this traffic so that the following table, + lr_out_post_snat, can identify whether the traffic flow was + initiated from the internal or external network. + +
    • +
  • A priority-0 logical flow with match 1 has actions next;. @@ -5072,6 +5091,16 @@ nd_ns {

    Packets reaching this table are processed according to the flows below:

      +
    • + Traffic that goes directly into a network configured with SNAT on + Distributed routers, and was initiated from an external network (i.e. + it matches ct.new), is committed to the SNAT CT zone. + This ensures that replies returning from the SNATed network do not + have their source address translated. For details about match rules + and priority see section "Egress Table 3: SNAT on Distributed + Routers". +
      • +
    • A priority-0 logical flow that matches all packets not already handled (match 1) and action next;. diff --git a/tests/ovn-northd.at b/tests/ovn-northd.at index 0732486f3..d4a1212d0 100644 --- a/tests/ovn-northd.at +++ b/tests/ovn-northd.at @@ -1107,7 +1107,8 @@ ovn_start # # DR is connected to S1 and CR is connected to S2 -check ovn-sbctl chassis-add gw1 geneve 127.0.0.1 +check ovn-sbctl chassis-add gw1 geneve 127.0.0.1 \ + -- set chassis gw1 other_config:ct-commit-to-zone="true" check ovn-nbctl lr-add DR check ovn-nbctl lrp-add DR DR-S1 02:ac:10:01:00:01 172.16.1.1/24 @@ -1135,6 +1136,7 @@ echo "CR-LRP UUID is: " $uuid check ovn-nbctl set Logical_Router $cr_uuid options:chassis=gw1 check ovn-nbctl --wait=sb sync + ovn-nbctl create Address_Set name=allowed_range addresses=\"1.1.1.1\" ovn-nbctl create Address_Set name=disallowed_range addresses=\"2.2.2.2\" @@ -1155,6 +1157,7 @@ AT_CAPTURE_FILE([crflows]) AT_CHECK([grep -e "lr_out_snat" drflows | ovn_strip_lflows], [0], [dnl table=??(lr_out_snat ), priority=0 , match=(1), action=(next;) table=??(lr_out_snat ), priority=120 , match=(nd_ns), action=(next;) + table=??(lr_out_snat ), priority=161 , match=(ip && ip4.dst == 50.0.0.11 && inport == "DR-S1" && is_chassis_resident("cr-DR-S1") && ip4.src == $allowed_range), action=(ct_snat;) table=??(lr_out_snat ), priority=161 , match=(ip && ip4.src == 50.0.0.11 && outport == "DR-S1" && is_chassis_resident("cr-DR-S1") && ip4.dst == $allowed_range && (!ct.trk || !ct.rpl)), action=(ct_snat(172.16.1.1);) ]) @@ -1185,6 +1188,7 @@ AT_CAPTURE_FILE([crflows2]) AT_CHECK([grep -e "lr_out_snat" drflows2 | ovn_strip_lflows], [0], [dnl table=??(lr_out_snat ), priority=0 , match=(1), action=(next;) table=??(lr_out_snat ), priority=120 , match=(nd_ns), action=(next;) + table=??(lr_out_snat ), priority=161 , match=(ip && ip4.dst == 50.0.0.11 && inport == "DR-S1" && is_chassis_resident("cr-DR-S1")), action=(ct_snat;) table=??(lr_out_snat ), priority=161 , match=(ip && ip4.src == 50.0.0.11 && outport == "DR-S1" && is_chassis_resident("cr-DR-S1") && (!ct.trk || !ct.rpl)), action=(ct_snat(172.16.1.1);) table=??(lr_out_snat ), priority=163 , match=(ip && ip4.src == 50.0.0.11 && outport == "DR-S1" && is_chassis_resident("cr-DR-S1") && ip4.dst == $disallowed_range), action=(next;) ]) @@ -1279,7 +1283,7 @@ AT_CHECK([grep -e "lr_out_snat" crflows5 | ovn_strip_lflows], [0], [dnl table=??(lr_out_snat ), priority=33 , match=(ip && ip4.src == 50.0.0.11 && ip4.dst == $allowed_range), action=(ip4.src=172.16.1.2; next;) ]) -# Stateful FIP with DISALLOWED_IPs +# Stateless FIP with DISALLOWED_IPs ovn-nbctl lr-nat-del DR dnat_and_snat 172.16.1.2 ovn-nbctl lr-nat-del CR dnat_and_snat 172.16.1.2 @@ -5489,7 +5493,8 @@ AT_CHECK([grep "lr_out_snat" lr0flows | ovn_strip_lflows], [0], [dnl check ovn-sbctl chassis-add gw1 geneve 127.0.0.1 \ -- set chassis gw1 other_config:ct-no-masked-label="true" \ - -- set chassis gw1 other_config:ovn-ct-lb-related="true" + -- set chassis gw1 other_config:ovn-ct-lb-related="true" \ + -- set chassis gw1 other_config:ct-commit-to-zone="true" # Create a distributed gw port on lr0 check ovn-nbctl ls-add public @@ -5590,12 +5595,16 @@ AT_CHECK([grep "lr_out_undnat" lr0flows | ovn_strip_lflows], [0], [dnl AT_CHECK([grep "lr_out_post_undnat" lr0flows | ovn_strip_lflows], [0], [dnl table=??(lr_out_post_undnat ), priority=0 , match=(1), action=(next;) + table=??(lr_out_post_undnat ), priority=70 , match=(ip && ip4.src == 10.0.0.0/24 && outport == "lr0-public" && is_chassis_resident("cr-lr0-public")), action=(ct_snat; ) + table=??(lr_out_post_undnat ), priority=70 , match=(ip && ip4.src == 10.0.0.10 && outport == "lr0-public" && is_chassis_resident("cr-lr0-public")), action=(ct_snat; ) ]) AT_CHECK([grep "lr_out_snat" lr0flows | ovn_strip_lflows], [0], [dnl table=??(lr_out_snat ), priority=0 , match=(1), action=(next;) table=??(lr_out_snat ), priority=120 , match=(nd_ns), action=(next;) + table=??(lr_out_snat ), priority=153 , match=(ip && ip4.dst == 10.0.0.0/24 && inport == "lr0-public" && is_chassis_resident("cr-lr0-public")), action=(ct_snat;) table=??(lr_out_snat ), priority=153 , match=(ip && ip4.src == 10.0.0.0/24 && outport == "lr0-public" && is_chassis_resident("cr-lr0-public") && (!ct.trk || !ct.rpl)), action=(ct_snat(172.168.0.10);) + table=??(lr_out_snat ), priority=161 , match=(ip && ip4.dst == 10.0.0.10 && inport == "lr0-public" && is_chassis_resident("cr-lr0-public")), action=(ct_snat;) table=??(lr_out_snat ), priority=161 , match=(ip && ip4.src == 10.0.0.10 && outport == "lr0-public" && is_chassis_resident("cr-lr0-public") && (!ct.trk || !ct.rpl)), action=(ct_snat(172.168.0.30);) table=??(lr_out_snat ), priority=161 , match=(ip && ip4.src == 10.0.0.3 && outport == "lr0-public" && is_chassis_resident("cr-lr0-public") && (!ct.trk || !ct.rpl)), action=(ct_snat(172.168.0.20);) ]) @@ -5738,12 +5747,16 @@ AT_CHECK([grep "lr_out_undnat" lr0flows | ovn_strip_lflows], [0], [dnl AT_CHECK([grep "lr_out_post_undnat" lr0flows | ovn_strip_lflows], [0], [dnl table=??(lr_out_post_undnat ), priority=0 , match=(1), action=(next;) + table=??(lr_out_post_undnat ), priority=70 , match=(ip && ip4.src == 10.0.0.0/24 && outport == "lr0-public" && is_chassis_resident("cr-lr0-public")), action=(ct_snat; ) + table=??(lr_out_post_undnat ), priority=70 , match=(ip && ip4.src == 10.0.0.10 && outport == "lr0-public" && is_chassis_resident("cr-lr0-public")), action=(ct_snat; ) ]) AT_CHECK([grep "lr_out_snat" lr0flows | ovn_strip_lflows], [0], [dnl table=??(lr_out_snat ), priority=0 , match=(1), action=(next;) table=??(lr_out_snat ), priority=120 , match=(nd_ns), action=(next;) + table=??(lr_out_snat ), priority=153 , match=(ip && ip4.dst == 10.0.0.0/24 && inport == "lr0-public" && is_chassis_resident("cr-lr0-public")), action=(ct_snat;) table=??(lr_out_snat ), priority=153 , match=(ip && ip4.src == 10.0.0.0/24 && outport == "lr0-public" && is_chassis_resident("cr-lr0-public") && (!ct.trk || !ct.rpl)), action=(ct_snat(172.168.0.10);) + table=??(lr_out_snat ), priority=161 , match=(ip && ip4.dst == 10.0.0.10 && inport == "lr0-public" && is_chassis_resident("cr-lr0-public")), action=(ct_snat;) table=??(lr_out_snat ), priority=161 , match=(ip && ip4.src == 10.0.0.10 && outport == "lr0-public" && is_chassis_resident("cr-lr0-public") && (!ct.trk || !ct.rpl)), action=(ct_snat(172.168.0.30);) table=??(lr_out_snat ), priority=161 , match=(ip && ip4.src == 10.0.0.3 && outport == "lr0-public" && is_chassis_resident("cr-lr0-public") && (!ct.trk || !ct.rpl)), action=(ct_snat(172.168.0.20);) ]) @@ -7576,9 +7589,14 @@ ovn_start # Validate SNAT, DNAT and DNAT_AND_SNAT behavior with multiple # distributed gateway LRPs. -check ovn-sbctl chassis-add gw1 geneve 127.0.0.1 -check ovn-sbctl chassis-add gw2 geneve 128.0.0.1 -check ovn-sbctl chassis-add gw3 geneve 129.0.0.1 +check ovn-sbctl chassis-add gw1 geneve 127.0.0.1 \ + -- set chassis gw1 other_config:ct-commit-to-zone="true" + +check ovn-sbctl chassis-add gw2 geneve 128.0.0.1 \ + -- set chassis gw2 other_config:ct-commit-to-zone="true" + +check ovn-sbctl chassis-add gw3 geneve 129.0.0.1 \ + -- set chassis gw3 other_config:ct-commit-to-zone="true" check ovn-nbctl lr-add DR check ovn-nbctl lrp-add DR DR-S1 02:ac:10:01:00:01 172.16.1.1/24 @@ -7643,6 +7661,9 @@ AT_CHECK([grep lr_in_unsnat lrflows | grep ct_snat | ovn_strip_lflows], [0], [dn ]) AT_CHECK([grep lr_out_snat lrflows | grep ct_snat | ovn_strip_lflows], [0], [dnl + table=??(lr_out_snat ), priority=161 , match=(ip && ip4.dst == 20.0.0.10 && inport == "DR-S1" && is_chassis_resident("cr-DR-S1")), action=(ct_snat;) + table=??(lr_out_snat ), priority=161 , match=(ip && ip4.dst == 20.0.0.10 && inport == "DR-S2" && is_chassis_resident("cr-DR-S2")), action=(ct_snat;) + table=??(lr_out_snat ), priority=161 , match=(ip && ip4.dst == 20.0.0.10 && inport == "DR-S3" && is_chassis_resident("cr-DR-S3")), action=(ct_snat;) table=??(lr_out_snat ), priority=161 , match=(ip && ip4.src == 20.0.0.10 && outport == "DR-S1" && is_chassis_resident("cr-DR-S1") && (!ct.trk || !ct.rpl)), action=(ct_snat(172.16.1.10);) table=??(lr_out_snat ), priority=161 , match=(ip && ip4.src == 20.0.0.10 && outport == "DR-S2" && is_chassis_resident("cr-DR-S2") && (!ct.trk || !ct.rpl)), action=(ct_snat(10.0.0.10);) table=??(lr_out_snat ), priority=161 , match=(ip && ip4.src == 20.0.0.10 && outport == "DR-S3" && is_chassis_resident("cr-DR-S3") && (!ct.trk || !ct.rpl)), action=(ct_snat(192.168.0.10);) diff --git a/tests/system-ovn.at b/tests/system-ovn.at index c22c7882f..80e9b7d0b 100644 --- a/tests/system-ovn.at +++ b/tests/system-ovn.at @@ -3572,6 +3572,40 @@ NS_CHECK_EXEC([foo1], [ping -q -c 3 -i 0.3 -w 2 10.0.0.1 | FORMAT_PING], \ 3 packets transmitted, 3 received, 0% packet loss, time 0ms ]) + +# test_connectivity_from_ext takes parameters 'vm' and 'ip'. It tests +# icmp, udp and tcp connectivity from external network to the 'vm' on +# the specified 'ip'. +test_connectivity_from_ext() { + local vm=$1; shift + local ip=$1; shift + + # Start listening daemons for UDP and TCP connections + NETNS_DAEMONIZE($vm, [nc -l -u 1234], [nc-$vm-$ip-udp.pid]) + NETNS_DAEMONIZE($vm, [nc -l -k 1235], [nc-$vm-$ip-tcp.pid]) + + # Ensure that vm can be pinged on the specified IP + NS_CHECK_EXEC([alice1], [ping -q -c 3 -i 0.3 -w 2 $ip | FORMAT_PING], \ + [0], [dnl +3 packets transmitted, 3 received, 0% packet loss, time 0ms +]) + + # Perform two consecutive UDP connections to the specified IP + NS_CHECK_EXEC([alice1], [nc -u $ip 1234 -p 2000 -z]) + NS_CHECK_EXEC([alice1], [nc -u $ip 1234 -p 2000 -z]) + + # Send data over TCP connection to the specified IP + NS_CHECK_EXEC([alice1], [echo "TCP test" | nc --send-only $ip 1235]) +} + +# Test access from external network to the internal IP of a VM that +# has also configured DNAT +test_connectivity_from_ext foo1 192.168.1.2 + +# Test access from external network to the internal IP of a VM that +# does not have DNAT +test_connectivity_from_ext bar1 192.168.2.2 + OVS_WAIT_UNTIL([ total_pkts=$(cat ext-net.pcap | wc -l) test "${total_pkts}" = "3" @@ -3738,6 +3772,39 @@ sed -e 's/zone=[[0-9]]*/zone=/'], [0], [dnl icmpv6,orig=(src=fd12::2,dst=fd20::2,id=,type=128,code=0),reply=(src=fd20::2,dst=fd20::1,id=,type=129,code=0),zone= ]) +# test_connectivity_from_ext takes parameters 'vm' and 'ip'. It tests +# icmp, udp and tcp connectivity from external network to the 'vm' on +# the specified 'ip'. +test_connectivity_from_ext() { + local vm=$1; shift + local ip=$1; shift + + # Start listening daemons for UDP and TCP connections + NETNS_DAEMONIZE($vm, [nc -l -u 1234], [nc-$vm-$ip-udp.pid]) + NETNS_DAEMONIZE($vm, [nc -l -k 1235], [nc-$vm-$ip-tcp.pid]) + + # Ensure that vm can be pinged on the specified IP + NS_CHECK_EXEC([alice1], [ping -q -c 3 -i 0.3 -w 2 $ip | FORMAT_PING], \ + [0], [dnl +3 packets transmitted, 3 received, 0% packet loss, time 0ms +]) + + # Perform two consecutive UDP connections to the specified IP + NS_CHECK_EXEC([alice1], [nc -u $ip 1234 -p 2000 -z]) + NS_CHECK_EXEC([alice1], [nc -u $ip 1234 -p 2000 -z]) + + # Send data over TCP connection to the specified IP + NS_CHECK_EXEC([alice1], [echo "TCP test" | nc --send-only $ip 1235]) +} + +# Test access from external network to the internal IP of a VM that +# has also configured DNAT +test_connectivity_from_ext foo1 fd11::2 + +# Test access from external network to the internal IP of a VM that +# does not have DNAT +test_connectivity_from_ext bar1 fd12::2 + OVS_APP_EXIT_AND_WAIT([ovn-controller]) as ovn-sb @@ -3918,6 +3985,7 @@ NS_CHECK_EXEC([foo2], [ping -q -c 3 -i 0.3 -w 2 172.16.1.4 | FORMAT_PING], \ AT_CHECK([ovs-appctl dpctl/dump-conntrack | grep icmp | FORMAT_CT(172.16.1.1) | \ sed -e 's/zone=[[0-9]]*/zone=/'], [0], [dnl icmp,orig=(src=172.16.1.1,dst=172.16.1.4,id=,type=8,code=0),reply=(src=192.168.2.2,dst=172.16.1.1,id=,type=0,code=0),zone= +icmp,orig=(src=172.16.1.1,dst=192.168.2.2,id=,type=8,code=0),reply=(src=192.168.2.2,dst=172.16.1.1,id=,type=0,code=0),zone= icmp,orig=(src=192.168.1.3,dst=172.16.1.4,id=,type=8,code=0),reply=(src=172.16.1.4,dst=172.16.1.1,id=,type=0,code=0),zone= ]) @@ -4086,6 +4154,7 @@ NS_CHECK_EXEC([foo2], [ping -q -c 3 -i 0.3 -w 2 fd20::4 | FORMAT_PING], \ AT_CHECK([ovs-appctl dpctl/dump-conntrack | FORMAT_CT(fd20::1) | \ sed -e 's/zone=[[0-9]]*/zone=/'], [0], [dnl icmpv6,orig=(src=fd11::3,dst=fd20::4,id=,type=128,code=0),reply=(src=fd20::4,dst=fd20::1,id=,type=129,code=0),zone= +icmpv6,orig=(src=fd20::1,dst=fd12::2,id=,type=128,code=0),reply=(src=fd12::2,dst=fd20::1,id=,type=129,code=0),zone= icmpv6,orig=(src=fd20::1,dst=fd20::4,id=,type=128,code=0),reply=(src=fd12::2,dst=fd20::1,id=,type=129,code=0),zone= ])