X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=src%2Fplugins%2Fnat%2Fnat.c;h=4803eeb64de217bef8cc2f1e1790538619b130c2;hb=a73f2d6f53c224668bd6bbea1a980ee4313c794f;hp=85c42027be0033fc96b018a54609196d5d1121fe;hpb=67eb4bb47739431bcb34bad8f1d6e3743a5e17ff;p=vpp.git diff --git a/src/plugins/nat/nat.c b/src/plugins/nat/nat.c index 85c42027be0..4803eeb64de 100755 --- a/src/plugins/nat/nat.c +++ b/src/plugins/nat/nat.c @@ -25,133 +25,150 @@ #include #include #include -#include -#include #include +#include #include #include #include #include #include +#include #include snat_main_t snat_main; -/* *INDENT-OFF* */ +fib_source_t nat_fib_src_hi; +fib_source_t nat_fib_src_low; +/* *INDENT-OFF* */ /* Hook up input features */ +VNET_FEATURE_INIT (nat_pre_in2out, static) = { + .arc_name = "ip4-unicast", + .node_name = "nat-pre-in2out", + .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa", + "ip4-sv-reassembly-feature"), +}; +VNET_FEATURE_INIT (nat_pre_out2in, static) = { + .arc_name = "ip4-unicast", + .node_name = "nat-pre-out2in", + .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa", + "ip4-dhcp-client-detect", + "ip4-sv-reassembly-feature"), +}; +VNET_FEATURE_INIT (snat_in2out_worker_handoff, static) = { + .arc_name = "ip4-unicast", + .node_name = "nat44-in2out-worker-handoff", + .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa"), +}; +VNET_FEATURE_INIT (snat_out2in_worker_handoff, static) = { + .arc_name = "ip4-unicast", + .node_name = "nat44-out2in-worker-handoff", + .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa", + "ip4-dhcp-client-detect"), +}; VNET_FEATURE_INIT (ip4_snat_in2out, static) = { .arc_name = "ip4-unicast", .node_name = "nat44-in2out", - .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa"), + .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa","ip4-sv-reassembly-feature"), }; VNET_FEATURE_INIT (ip4_snat_out2in, static) = { .arc_name = "ip4-unicast", .node_name = "nat44-out2in", - .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa", + .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa","ip4-sv-reassembly-feature", "ip4-dhcp-client-detect"), }; VNET_FEATURE_INIT (ip4_nat_classify, static) = { .arc_name = "ip4-unicast", .node_name = "nat44-classify", - .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa"), + .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa","ip4-sv-reassembly-feature"), }; VNET_FEATURE_INIT (ip4_snat_det_in2out, static) = { .arc_name = "ip4-unicast", .node_name = "nat44-det-in2out", - .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa"), + .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa","ip4-sv-reassembly-feature"), }; VNET_FEATURE_INIT (ip4_snat_det_out2in, static) = { .arc_name = "ip4-unicast", .node_name = "nat44-det-out2in", - .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa", + .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa","ip4-sv-reassembly-feature", "ip4-dhcp-client-detect"), }; VNET_FEATURE_INIT (ip4_nat_det_classify, static) = { .arc_name = "ip4-unicast", .node_name = "nat44-det-classify", - .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa"), + .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa","ip4-sv-reassembly-feature"), }; VNET_FEATURE_INIT (ip4_nat44_ed_in2out, static) = { .arc_name = "ip4-unicast", .node_name = "nat44-ed-in2out", - .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa"), + .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa","ip4-sv-reassembly-feature"), }; VNET_FEATURE_INIT (ip4_nat44_ed_out2in, static) = { .arc_name = "ip4-unicast", .node_name = "nat44-ed-out2in", - .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa", + .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa","ip4-sv-reassembly-feature", "ip4-dhcp-client-detect"), }; VNET_FEATURE_INIT (ip4_nat44_ed_classify, static) = { .arc_name = "ip4-unicast", .node_name = "nat44-ed-classify", - .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa"), -}; -VNET_FEATURE_INIT (ip4_snat_in2out_worker_handoff, static) = { - .arc_name = "ip4-unicast", - .node_name = "nat44-in2out-worker-handoff", - .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa"), -}; -VNET_FEATURE_INIT (ip4_snat_out2in_worker_handoff, static) = { - .arc_name = "ip4-unicast", - .node_name = "nat44-out2in-worker-handoff", - .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa", - "ip4-dhcp-client-detect"), + .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa","ip4-sv-reassembly-feature"), }; VNET_FEATURE_INIT (ip4_nat_handoff_classify, static) = { .arc_name = "ip4-unicast", .node_name = "nat44-handoff-classify", - .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa"), + .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa","ip4-sv-reassembly-feature"), }; VNET_FEATURE_INIT (ip4_snat_in2out_fast, static) = { .arc_name = "ip4-unicast", .node_name = "nat44-in2out-fast", - .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa"), + .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa","ip4-sv-reassembly-feature"), }; VNET_FEATURE_INIT (ip4_snat_out2in_fast, static) = { .arc_name = "ip4-unicast", .node_name = "nat44-out2in-fast", - .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa", + .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa","ip4-sv-reassembly-feature", "ip4-dhcp-client-detect"), }; VNET_FEATURE_INIT (ip4_snat_hairpin_dst, static) = { .arc_name = "ip4-unicast", .node_name = "nat44-hairpin-dst", - .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa"), + .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa","ip4-sv-reassembly-feature"), }; VNET_FEATURE_INIT (ip4_nat44_ed_hairpin_dst, static) = { .arc_name = "ip4-unicast", .node_name = "nat44-ed-hairpin-dst", - .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa"), + .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa","ip4-sv-reassembly-feature"), }; /* Hook up output features */ VNET_FEATURE_INIT (ip4_snat_in2out_output, static) = { .arc_name = "ip4-output", .node_name = "nat44-in2out-output", - .runs_after = VNET_FEATURES ("acl-plugin-out-ip4-fa"), + .runs_after = VNET_FEATURES ("acl-plugin-out-ip4-fa","ip4-sv-reassembly-output-feature"), }; VNET_FEATURE_INIT (ip4_snat_in2out_output_worker_handoff, static) = { .arc_name = "ip4-output", .node_name = "nat44-in2out-output-worker-handoff", - .runs_after = VNET_FEATURES ("acl-plugin-out-ip4-fa"), + .runs_after = VNET_FEATURES ("acl-plugin-out-ip4-fa","ip4-sv-reassembly-output-feature"), }; VNET_FEATURE_INIT (ip4_snat_hairpin_src, static) = { .arc_name = "ip4-output", .node_name = "nat44-hairpin-src", - .runs_after = VNET_FEATURES ("acl-plugin-out-ip4-fa"), + .runs_after = VNET_FEATURES ("acl-plugin-out-ip4-fa","ip4-sv-reassembly-output-feature"), }; VNET_FEATURE_INIT (ip4_nat44_ed_in2out_output, static) = { .arc_name = "ip4-output", .node_name = "nat44-ed-in2out-output", - .runs_after = VNET_FEATURES ("acl-plugin-out-ip4-fa"), + .runs_after = VNET_FEATURES ("ip4-sv-reassembly-output-feature"), + .runs_before = VNET_FEATURES ("acl-plugin-out-ip4-fa"), }; VNET_FEATURE_INIT (ip4_nat44_ed_hairpin_src, static) = { .arc_name = "ip4-output", .node_name = "nat44-ed-hairpin-src", - .runs_after = VNET_FEATURES ("acl-plugin-out-ip4-fa"), + .runs_after = VNET_FEATURES ("ip4-sv-reassembly-output-feature"), + .runs_before = VNET_FEATURES ("acl-plugin-out-ip4-fa"), }; /* Hook up ip4-local features */ @@ -309,6 +326,133 @@ nat_free_session_data (snat_main_t * sm, snat_session_t * s, u32 thread_index, &s->out2in); } +void +nat44_free_session_data (snat_main_t * sm, snat_session_t * s, + u32 thread_index, u8 is_ha) +{ + snat_session_key_t key; + nat_ed_ses_key_t ed_key; + clib_bihash_kv_16_8_t ed_kv; + snat_main_per_thread_data_t *tsm = + vec_elt_at_index (sm->per_thread_data, thread_index); + + if (is_fwd_bypass_session (s)) + { + if (snat_is_unk_proto_session (s)) + { + ed_key.proto = s->in2out.port; + ed_key.r_port = 0; + ed_key.l_port = 0; + } + else + { + ed_key.proto = snat_proto_to_ip_proto (s->in2out.protocol); + ed_key.l_port = s->in2out.port; + ed_key.r_port = s->ext_host_port; + } + + ed_key.l_addr = s->in2out.addr; + ed_key.r_addr = s->ext_host_addr; + ed_key.fib_index = 0; + ed_kv.key[0] = ed_key.as_u64[0]; + ed_kv.key[1] = ed_key.as_u64[1]; + + if (PREDICT_FALSE + (clib_bihash_add_del_16_8 (&tsm->in2out_ed, &ed_kv, 0))) + nat_elog_warn ("in2out_ed key del failed"); + return; + } + + /* session lookup tables */ + if (is_affinity_sessions (s)) + nat_affinity_unlock (s->ext_host_addr, s->out2in.addr, + s->in2out.protocol, s->out2in.port); + ed_key.l_addr = s->out2in.addr; + ed_key.r_addr = s->ext_host_addr; + ed_key.fib_index = s->out2in.fib_index; + if (snat_is_unk_proto_session (s)) + { + ed_key.proto = s->in2out.port; + ed_key.r_port = 0; + ed_key.l_port = 0; + } + else + { + ed_key.proto = snat_proto_to_ip_proto (s->in2out.protocol); + ed_key.l_port = s->out2in.port; + ed_key.r_port = s->ext_host_port; + } + ed_kv.key[0] = ed_key.as_u64[0]; + ed_kv.key[1] = ed_key.as_u64[1]; + + if (PREDICT_FALSE (clib_bihash_add_del_16_8 (&tsm->out2in_ed, &ed_kv, 0))) + nat_elog_warn ("out2in_ed key del failed"); + + ed_key.l_addr = s->in2out.addr; + ed_key.fib_index = s->in2out.fib_index; + + if (!snat_is_unk_proto_session (s)) + ed_key.l_port = s->in2out.port; + + if (is_twice_nat_session (s)) + { + ed_key.r_addr = s->ext_host_nat_addr; + ed_key.r_port = s->ext_host_nat_port; + } + + ed_kv.key[0] = ed_key.as_u64[0]; + ed_kv.key[1] = ed_key.as_u64[1]; + + if (PREDICT_FALSE (clib_bihash_add_del_16_8 (&tsm->in2out_ed, &ed_kv, 0))) + nat_elog_warn ("in2out_ed key del failed"); + + if (!is_ha) + { + nat_syslog_nat44_sdel (s->user_index, s->in2out.fib_index, + &s->in2out.addr, s->in2out.port, + &s->ext_host_nat_addr, s->ext_host_nat_port, + &s->out2in.addr, s->out2in.port, + &s->ext_host_addr, s->ext_host_port, + s->in2out.protocol, is_twice_nat_session (s)); + } + + if (snat_is_unk_proto_session (s)) + return; + + // is this correct ? + if (!is_ha) + { + snat_ipfix_logging_nat44_ses_delete (thread_index, + s->in2out.addr.as_u32, + s->out2in.addr.as_u32, + s->in2out.protocol, + s->in2out.port, + s->out2in.port, + s->in2out.fib_index); + nat_ha_sdel (&s->out2in.addr, s->out2in.port, &s->ext_host_addr, + s->ext_host_port, s->out2in.protocol, s->out2in.fib_index, + thread_index); + } + + /* Twice NAT address and port for external host */ + if (is_twice_nat_session (s)) + { + key.protocol = s->in2out.protocol; + key.port = s->ext_host_nat_port; + key.addr.as_u32 = s->ext_host_nat_addr.as_u32; + snat_free_outside_address_and_port (sm->twice_nat_addresses, + thread_index, &key); + } + + if (snat_is_session_static (s)) + return; + + // should be called for every dynamic session + snat_free_outside_address_and_port (sm->addresses, thread_index, + &s->out2in); +} + + snat_user_t * nat_user_get_or_create (snat_main_t * sm, ip4_address_t * addr, u32 fib_index, u32 thread_index) @@ -329,6 +473,9 @@ nat_user_get_or_create (snat_main_t * sm, ip4_address_t * addr, u32 fib_index, /* no, make a new one */ pool_get (tsm->users, u); clib_memset (u, 0, sizeof (*u)); + + u->min_session_timeout = 0; + u->addr.as_u32 = addr->as_u32; u->fib_index = fib_index; @@ -437,76 +584,54 @@ nat_ed_session_alloc (snat_main_t * sm, snat_user_t * u, u32 thread_index, { snat_session_t *s; snat_main_per_thread_data_t *tsm = &sm->per_thread_data[thread_index]; - dlist_elt_t *per_user_translation_list_elt, *oldest_elt; - u32 oldest_index; + + dlist_elt_t *oldest_elt; u64 sess_timeout_time; + u32 oldest_index; + // no sessions if (PREDICT_FALSE (!(u->nsessions) && !(u->nstaticsessions))) goto alloc_new; + // no free sessions + if (PREDICT_FALSE + ((u->nsessions + u->nstaticsessions) >= sm->max_translations_per_user)) + { + if (nat44_max_translations_per_user_cleanup (u, thread_index, now)) + goto alloc_new; + + nat_elog_addr (SNAT_LOG_WARNING, "[warn] max translations per user", + clib_net_to_host_u32 (u->addr.as_u32)); + snat_ipfix_logging_max_entries_per_user (thread_index, + sm->max_translations_per_user, + u->addr.as_u32); + return 0; + } + oldest_index = clib_dlist_remove_head (tsm->list_pool, u->sessions_per_user_list_head_index); oldest_elt = pool_elt_at_index (tsm->list_pool, oldest_index); s = pool_elt_at_index (tsm->sessions, oldest_elt->value); + sess_timeout_time = s->last_heard + (f64) nat44_session_get_timeout (sm, s); if (now >= sess_timeout_time) { + // reuse old session clib_dlist_addtail (tsm->list_pool, u->sessions_per_user_list_head_index, oldest_index); - nat_free_session_data (sm, s, thread_index, 0); - if (snat_is_session_static (s)) - u->nstaticsessions--; - else - u->nsessions--; - s->flags = 0; - s->total_bytes = 0; - s->total_pkts = 0; - s->state = 0; - s->ext_host_addr.as_u32 = 0; - s->ext_host_port = 0; - s->ext_host_nat_addr.as_u32 = 0; - s->ext_host_nat_port = 0; + s = nat44_session_reuse_old (sm, u, s, thread_index, now); } else { + // alloc new session clib_dlist_addhead (tsm->list_pool, u->sessions_per_user_list_head_index, oldest_index); - if ((u->nsessions + u->nstaticsessions) >= - sm->max_translations_per_user) - { - nat_elog_addr (SNAT_LOG_WARNING, "[warn] max translations per user", - clib_net_to_host_u32 (u->addr.as_u32)); - snat_ipfix_logging_max_entries_per_user - (thread_index, sm->max_translations_per_user, u->addr.as_u32); - return 0; - } - else - { - alloc_new: - pool_get (tsm->sessions, s); - clib_memset (s, 0, sizeof (*s)); - - /* Create list elts */ - pool_get (tsm->list_pool, per_user_translation_list_elt); - clib_dlist_init (tsm->list_pool, - per_user_translation_list_elt - tsm->list_pool); - - per_user_translation_list_elt->value = s - tsm->sessions; - s->per_user_index = per_user_translation_list_elt - tsm->list_pool; - s->per_user_list_head_index = u->sessions_per_user_list_head_index; - - clib_dlist_addtail (tsm->list_pool, - s->per_user_list_head_index, - per_user_translation_list_elt - tsm->list_pool); - } - + alloc_new: + s = nat44_session_alloc_new (tsm, u, now); vlib_set_simple_counter (&sm->total_sessions, thread_index, 0, pool_elts (tsm->sessions)); } - - s->ha_last_refreshed = now; - return s; } @@ -526,7 +651,7 @@ snat_add_del_addr_to_fib (ip4_address_t * addr, u8 p_len, u32 sw_if_index, if (is_add) fib_table_entry_update_one_path (fib_index, &prefix, - FIB_SOURCE_PLUGIN_LOW, + nat_fib_src_low, (FIB_ENTRY_FLAG_CONNECTED | FIB_ENTRY_FLAG_LOCAL | FIB_ENTRY_FLAG_EXCLUSIVE), @@ -535,7 +660,7 @@ snat_add_del_addr_to_fib (ip4_address_t * addr, u8 p_len, u32 sw_if_index, sw_if_index, ~0, 1, NULL, FIB_ROUTE_PATH_FLAG_NONE); else - fib_table_entry_delete (fib_index, &prefix, FIB_SOURCE_PLUGIN_LOW); + fib_table_entry_delete (fib_index, &prefix, nat_fib_src_low); } int @@ -567,7 +692,7 @@ snat_add_address (snat_main_t * sm, ip4_address_t * addr, u32 vrf_id, if (vrf_id != ~0) ap->fib_index = fib_table_find_or_create_and_lock (FIB_PROTOCOL_IP4, vrf_id, - FIB_SOURCE_PLUGIN_LOW); + nat_fib_src_low); else ap->fib_index = ~0; #define _(N, i, n, s) \ @@ -622,15 +747,6 @@ is_snat_address_used_in_static_mapping (snat_main_t * sm, ip4_address_t addr) return 0; } -void -increment_v4_address (ip4_address_t * a) -{ - u32 v; - - v = clib_net_to_host_u32 (a->as_u32) + 1; - a->as_u32 = clib_host_to_net_u32 (v); -} - static void snat_add_static_mapping_when_resolved (snat_main_t * sm, ip4_address_t l_addr, @@ -803,7 +919,7 @@ snat_add_static_mapping (ip4_address_t l_addr, ip4_address_t e_addr, local->vrf_id = vrf_id; local->fib_index = fib_table_find_or_create_and_lock (FIB_PROTOCOL_IP4, vrf_id, - FIB_SOURCE_PLUGIN_LOW); + nat_fib_src_low); m_key.addr = m->local_addr; m_key.port = m->local_port; m_key.protocol = m->proto; @@ -824,13 +940,13 @@ snat_add_static_mapping (ip4_address_t l_addr, ip4_address_t e_addr, if (vrf_id != ~0) fib_index = fib_table_find_or_create_and_lock (FIB_PROTOCOL_IP4, vrf_id, - FIB_SOURCE_PLUGIN_LOW); + nat_fib_src_low); /* If not specified use inside VRF id from SNAT plugin startup config */ else { fib_index = sm->inside_fib_index; vrf_id = sm->inside_vrf_id; - fib_table_lock (fib_index, FIB_PROTOCOL_IP4, FIB_SOURCE_PLUGIN_LOW); + fib_table_lock (fib_index, FIB_PROTOCOL_IP4, nat_fib_src_low); } if (!(out2in_only || identity_nat)) @@ -935,7 +1051,7 @@ snat_add_static_mapping (ip4_address_t l_addr, ip4_address_t e_addr, ip4_header_t ip = { .src_address = m->local_addr, }; - vec_add1 (m->workers, sm->worker_in2out_cb (&ip, m->fib_index)); + vec_add1 (m->workers, sm->worker_in2out_cb (&ip, m->fib_index, 0)); tsm = vec_elt_at_index (sm->per_thread_data, m->workers[0]); } else @@ -1123,7 +1239,7 @@ snat_add_static_mapping (ip4_address_t l_addr, ip4_address_t e_addr, } } - fib_table_unlock (fib_index, FIB_PROTOCOL_IP4, FIB_SOURCE_PLUGIN_LOW); + fib_table_unlock (fib_index, FIB_PROTOCOL_IP4, nat_fib_src_low); if (pool_elts (m->locals)) return 0; @@ -1281,7 +1397,7 @@ nat44_add_del_lb_static_mapping (ip4_address_t e_addr, u16 e_port, locals[i].fib_index = fib_table_find_or_create_and_lock (FIB_PROTOCOL_IP4, locals[i].vrf_id, - FIB_SOURCE_PLUGIN_LOW); + nat_fib_src_low); m_key.addr = locals[i].addr; m_key.fib_index = locals[i].fib_index; if (!out2in_only) @@ -1302,7 +1418,8 @@ nat44_add_del_lb_static_mapping (ip4_address_t e_addr, u16 e_port, }; bitmap = clib_bitmap_set (bitmap, - sm->worker_in2out_cb (&ip, m->fib_index), 1); + sm->worker_in2out_cb (&ip, m->fib_index, 0), + 1); } } @@ -1370,7 +1487,7 @@ nat44_add_del_lb_static_mapping (ip4_address_t e_addr, u16 e_port, pool_foreach (local, m->locals, ({ fib_table_unlock (local->fib_index, FIB_PROTOCOL_IP4, - FIB_SOURCE_PLUGIN_LOW); + nat_fib_src_low); m_key.addr = local->addr; if (!out2in_only) { @@ -1390,7 +1507,7 @@ nat44_add_del_lb_static_mapping (ip4_address_t e_addr, u16 e_port, .src_address = local->addr, }; tsm = vec_elt_at_index (sm->per_thread_data, - sm->worker_in2out_cb (&ip, m->fib_index)); + sm->worker_in2out_cb (&ip, m->fib_index, 0)); } else tsm = vec_elt_at_index (sm->per_thread_data, sm->num_workers); @@ -1503,7 +1620,7 @@ nat44_lb_static_mapping_add_del_local (ip4_address_t e_addr, u16 e_port, local->vrf_id = vrf_id; local->fib_index = fib_table_find_or_create_and_lock (FIB_PROTOCOL_IP4, vrf_id, - FIB_SOURCE_PLUGIN_LOW); + nat_fib_src_low); if (!is_out2in_only_static_mapping (m)) { @@ -1525,7 +1642,7 @@ nat44_lb_static_mapping_add_del_local (ip4_address_t e_addr, u16 e_port, return VNET_API_ERROR_UNSPECIFIED; fib_table_unlock (match_local->fib_index, FIB_PROTOCOL_IP4, - FIB_SOURCE_PLUGIN_LOW); + nat_fib_src_low); if (!is_out2in_only_static_mapping (m)) { @@ -1543,7 +1660,8 @@ nat44_lb_static_mapping_add_del_local (ip4_address_t e_addr, u16 e_port, .src_address = local->addr, }; tsm = vec_elt_at_index (sm->per_thread_data, - sm->worker_in2out_cb (&ip, m->fib_index)); + sm->worker_in2out_cb (&ip, m->fib_index, + 0)); } else tsm = vec_elt_at_index (sm->per_thread_data, sm->num_workers); @@ -1596,7 +1714,7 @@ nat44_lb_static_mapping_add_del_local (ip4_address_t e_addr, u16 e_port, ip4_header_t ip; ip.src_address.as_u32 = local->addr.as_u32, bitmap = clib_bitmap_set (bitmap, - sm->worker_in2out_cb (&ip, local->fib_index), + sm->worker_in2out_cb (&ip, local->fib_index, 0), 1); } })); @@ -1675,7 +1793,7 @@ snat_del_address (snat_main_t * sm, ip4_address_t addr, u8 delete_sm, } if (a->fib_index != ~0) - fib_table_unlock (a->fib_index, FIB_PROTOCOL_IP4, FIB_SOURCE_PLUGIN_LOW); + fib_table_unlock (a->fib_index, FIB_PROTOCOL_IP4, nat_fib_src_low); /* Delete sessions using address */ if (a->busy_tcp_ports || a->busy_udp_ports || a->busy_icmp_ports) @@ -1773,18 +1891,20 @@ snat_interface_add_del (u32 sw_if_index, u8 is_inside, int is_del) else if (sm->deterministic) feature_name = is_inside ? "nat44-det-in2out" : "nat44-det-out2in"; else if (sm->endpoint_dependent) - feature_name = is_inside ? "nat44-ed-in2out" : "nat44-ed-out2in"; + { + feature_name = is_inside ? "nat-pre-in2out" : "nat-pre-out2in"; + } else feature_name = is_inside ? "nat44-in2out" : "nat44-out2in"; } if (sm->fq_in2out_index == ~0 && !sm->deterministic && sm->num_workers > 1) - sm->fq_in2out_index = vlib_frame_queue_main_init (sm->in2out_node_index, - NAT_FQ_NELTS); + sm->fq_in2out_index = + vlib_frame_queue_main_init (sm->handoff_in2out_index, NAT_FQ_NELTS); if (sm->fq_out2in_index == ~0 && !sm->deterministic && sm->num_workers > 1) - sm->fq_out2in_index = vlib_frame_queue_main_init (sm->out2in_node_index, - NAT_FQ_NELTS); + sm->fq_out2in_index = + vlib_frame_queue_main_init (sm->handoff_out2in_index, NAT_FQ_NELTS); if (!is_inside) { @@ -1842,8 +1962,8 @@ feature_set: else if (sm->endpoint_dependent) { del_feature_name = "nat44-ed-classify"; - feature_name = !is_inside ? "nat44-ed-in2out" : - "nat44-ed-out2in"; + feature_name = !is_inside ? "nat-pre-in2out" : + "nat-pre-out2in"; } else { @@ -1851,6 +1971,9 @@ feature_set: feature_name = !is_inside ? "nat44-in2out" : "nat44-out2in"; } + int rv = ip4_sv_reass_enable_disable_with_refcnt (sw_if_index, 0); + if (rv) + return rv; vnet_feature_enable_disable ("ip4-unicast", del_feature_name, sw_if_index, 0, 0, 0); vnet_feature_enable_disable ("ip4-unicast", feature_name, @@ -1869,6 +1992,9 @@ feature_set: } else { + int rv = ip4_sv_reass_enable_disable_with_refcnt (sw_if_index, 0); + if (rv) + return rv; vnet_feature_enable_disable ("ip4-unicast", feature_name, sw_if_index, 0, 0, 0); pool_put (sm->interfaces, i); @@ -1905,8 +2031,9 @@ feature_set: } else if (sm->endpoint_dependent) { - del_feature_name = !is_inside ? "nat44-ed-in2out" : - "nat44-ed-out2in"; + del_feature_name = !is_inside ? "nat-pre-in2out" : + "nat-pre-out2in"; + feature_name = "nat44-ed-classify"; } else @@ -1915,6 +2042,9 @@ feature_set: feature_name = "nat44-classify"; } + int rv = ip4_sv_reass_enable_disable_with_refcnt (sw_if_index, 1); + if (rv) + return rv; vnet_feature_enable_disable ("ip4-unicast", del_feature_name, sw_if_index, 0, 0, 0); vnet_feature_enable_disable ("ip4-unicast", feature_name, @@ -1945,6 +2075,10 @@ feature_set: vnet_feature_enable_disable ("ip4-unicast", feature_name, sw_if_index, 1, 0, 0); + int rv = ip4_sv_reass_enable_disable_with_refcnt (sw_if_index, 1); + if (rv) + return rv; + if (is_inside && !sm->out2in_dpo) { if (sm->endpoint_dependent) @@ -2044,6 +2178,15 @@ feature_set: { if (sm->endpoint_dependent) { + int rv = + ip4_sv_reass_enable_disable_with_refcnt (sw_if_index, !is_del); + if (rv) + return rv; + rv = + ip4_sv_reass_output_enable_disable_with_refcnt (sw_if_index, + !is_del); + if (rv) + return rv; vnet_feature_enable_disable ("ip4-unicast", "nat44-ed-hairpin-dst", sw_if_index, !is_del, 0, 0); vnet_feature_enable_disable ("ip4-output", "nat44-ed-hairpin-src", @@ -2051,6 +2194,15 @@ feature_set: } else { + int rv = + ip4_sv_reass_enable_disable_with_refcnt (sw_if_index, !is_del); + if (rv) + return rv; + rv = + ip4_sv_reass_output_enable_disable_with_refcnt (sw_if_index, + !is_del); + if (rv) + return rv; vnet_feature_enable_disable ("ip4-unicast", "nat44-hairpin-dst", sw_if_index, !is_del, 0, 0); vnet_feature_enable_disable ("ip4-output", "nat44-hairpin-src", @@ -2061,6 +2213,13 @@ feature_set: if (sm->num_workers > 1) { + int rv = ip4_sv_reass_enable_disable_with_refcnt (sw_if_index, !is_del); + if (rv) + return rv; + rv = + ip4_sv_reass_output_enable_disable_with_refcnt (sw_if_index, !is_del); + if (rv) + return rv; vnet_feature_enable_disable ("ip4-unicast", "nat44-out2in-worker-handoff", sw_if_index, !is_del, 0, 0); @@ -2072,13 +2231,31 @@ feature_set: { if (sm->endpoint_dependent) { - vnet_feature_enable_disable ("ip4-unicast", "nat44-ed-out2in", + int rv = + ip4_sv_reass_enable_disable_with_refcnt (sw_if_index, !is_del); + if (rv) + return rv; + rv = + ip4_sv_reass_output_enable_disable_with_refcnt (sw_if_index, + !is_del); + if (rv) + return rv; + vnet_feature_enable_disable ("ip4-unicast", "nat-pre-out2in", sw_if_index, !is_del, 0, 0); vnet_feature_enable_disable ("ip4-output", "nat44-ed-in2out-output", sw_if_index, !is_del, 0, 0); } else { + int rv = + ip4_sv_reass_enable_disable_with_refcnt (sw_if_index, !is_del); + if (rv) + return rv; + rv = + ip4_sv_reass_output_enable_disable_with_refcnt (sw_if_index, + !is_del); + if (rv) + return rv; vnet_feature_enable_disable ("ip4-unicast", "nat44-out2in", sw_if_index, !is_del, 0, 0); vnet_feature_enable_disable ("ip4-output", "nat44-in2out-output", @@ -2089,11 +2266,11 @@ feature_set: fq: if (sm->fq_in2out_output_index == ~0 && sm->num_workers > 1) sm->fq_in2out_output_index = - vlib_frame_queue_main_init (sm->in2out_output_node_index, 0); + vlib_frame_queue_main_init (sm->handoff_in2out_output_index, 0); if (sm->fq_out2in_index == ~0 && sm->num_workers > 1) sm->fq_out2in_index = - vlib_frame_queue_main_init (sm->out2in_node_index, 0); + vlib_frame_queue_main_init (sm->handoff_out2in_index, 0); /* *INDENT-OFF* */ pool_foreach (i, sm->output_feature_interfaces, @@ -2160,6 +2337,7 @@ snat_set_workers (uword * bitmap) ({ vec_add1(sm->workers, i); sm->per_thread_data[sm->first_worker_index + i].snat_thread_index = j; + sm->per_thread_data[sm->first_worker_index + i].thread_index = i; j++; })); /* *INDENT-ON* */ @@ -2196,6 +2374,16 @@ snat_update_outside_fib (u32 sw_if_index, u32 new_fib_index, match = 1; } })); + + pool_foreach (i, sm->output_feature_interfaces, + ({ + if (i->sw_if_index == sw_if_index) + { + if (!(nat_interface_is_outside (i))) + return; + match = 1; + } + })); /* *INDENT-ON* */ if (!match) @@ -2280,7 +2468,7 @@ snat_init (vlib_main_t * vm) sm->vnet_main = vnet_get_main (); sm->ip4_main = im; sm->ip4_lookup_main = lm; - sm->api_main = &api_main; + sm->api_main = vlibapi_get_main (); sm->first_worker_index = 0; sm->num_workers = 0; sm->num_snat_thread = 1; @@ -2289,20 +2477,28 @@ snat_init (vlib_main_t * vm) sm->fq_in2out_index = ~0; sm->fq_in2out_output_index = ~0; sm->fq_out2in_index = ~0; - sm->udp_timeout = SNAT_UDP_TIMEOUT; - sm->tcp_established_timeout = SNAT_TCP_ESTABLISHED_TIMEOUT; - sm->tcp_transitory_timeout = SNAT_TCP_TRANSITORY_TIMEOUT; - sm->icmp_timeout = SNAT_ICMP_TIMEOUT; + sm->alloc_addr_and_port = nat_alloc_addr_and_port_default; sm->addr_and_port_alloc_alg = NAT_ADDR_AND_PORT_ALLOC_ALG_DEFAULT; sm->forwarding_enabled = 0; sm->log_class = vlib_log_register_class ("nat", 0); - sm->log_level = SNAT_LOG_NONE; + sm->log_level = SNAT_LOG_ERROR; sm->mss_clamping = 0; node = vlib_get_node_by_name (vm, (u8 *) "error-drop"); sm->error_node_index = node->index; + node = vlib_get_node_by_name (vm, (u8 *) "nat-pre-in2out"); + sm->pre_in2out_node_index = node->index; + node = vlib_get_node_by_name (vm, (u8 *) "nat-pre-out2in"); + sm->pre_out2in_node_index = node->index; + + node = vlib_get_node_by_name (vm, (u8 *) "nat-pre-in2out"); + sm->pre_in2out_node_index = node->index; + + node = vlib_get_node_by_name (vm, (u8 *) "nat-pre-out2in"); + sm->pre_out2in_node_index = node->index; + node = vlib_get_node_by_name (vm, (u8 *) "nat44-in2out"); sm->in2out_node_index = node->index; node = vlib_get_node_by_name (vm, (u8 *) "nat44-in2out-output"); @@ -2313,29 +2509,21 @@ snat_init (vlib_main_t * vm) sm->in2out_slowpath_node_index = node->index; node = vlib_get_node_by_name (vm, (u8 *) "nat44-in2out-output-slowpath"); sm->in2out_slowpath_output_node_index = node->index; - node = vlib_get_node_by_name (vm, (u8 *) "nat44-in2out-reass"); - sm->in2out_reass_node_index = node->index; node = vlib_get_node_by_name (vm, (u8 *) "nat44-ed-in2out"); sm->ed_in2out_node_index = node->index; node = vlib_get_node_by_name (vm, (u8 *) "nat44-ed-in2out-slowpath"); sm->ed_in2out_slowpath_node_index = node->index; - node = vlib_get_node_by_name (vm, (u8 *) "nat44-ed-in2out-reass"); - sm->ed_in2out_reass_node_index = node->index; node = vlib_get_node_by_name (vm, (u8 *) "nat44-out2in"); sm->out2in_node_index = node->index; node = vlib_get_node_by_name (vm, (u8 *) "nat44-out2in-fast"); sm->out2in_fast_node_index = node->index; - node = vlib_get_node_by_name (vm, (u8 *) "nat44-out2in-reass"); - sm->out2in_reass_node_index = node->index; node = vlib_get_node_by_name (vm, (u8 *) "nat44-ed-out2in"); sm->ed_out2in_node_index = node->index; node = vlib_get_node_by_name (vm, (u8 *) "nat44-ed-out2in-slowpath"); sm->ed_out2in_slowpath_node_index = node->index; - node = vlib_get_node_by_name (vm, (u8 *) "nat44-ed-out2in-reass"); - sm->ed_out2in_reass_node_index = node->index; node = vlib_get_node_by_name (vm, (u8 *) "nat44-det-in2out"); sm->det_in2out_node_index = node->index; @@ -2416,8 +2604,6 @@ snat_init (vlib_main_t * vm) if (error) return error; - dslite_init (vm); - nat66_init (vm); ip4_table_bind_callback_t cbt4 = { @@ -2425,8 +2611,14 @@ snat_init (vlib_main_t * vm) }; vec_add1 (ip4_main.table_bind_callbacks, cbt4); - /* Init virtual fragmenentation reassembly */ - return nat_reass_init (vm); + nat_fib_src_hi = fib_source_allocate ("nat-hi", + FIB_SOURCE_PRIORITY_HI, + FIB_SOURCE_BH_SIMPLE); + nat_fib_src_low = fib_source_allocate ("nat-low", + FIB_SOURCE_PRIORITY_LOW, + FIB_SOURCE_BH_SIMPLE); + + return error; } VLIB_INIT_FUNCTION (snat_init); @@ -2579,7 +2771,7 @@ snat_static_mapping_match (snat_main_t * sm, .src_address = local->addr, }; - if (sm->worker_in2out_cb (&ip, m->fib_index) == + if (sm->worker_in2out_cb (&ip, m->fib_index, 0) == thread_index) { vec_add1 (tmp, i); @@ -2876,13 +3068,13 @@ nat44_add_del_address_dpo (ip4_address_t addr, u8 is_add) if (is_add) { nat_dpo_create (DPO_PROTO_IP4, 0, &dpo_v4); - fib_table_entry_special_dpo_add (0, &pfx, FIB_SOURCE_PLUGIN_HI, + fib_table_entry_special_dpo_add (0, &pfx, nat_fib_src_hi, FIB_ENTRY_FLAG_EXCLUSIVE, &dpo_v4); dpo_reset (&dpo_v4); } else { - fib_table_entry_special_remove (0, &pfx, FIB_SOURCE_PLUGIN_HI); + fib_table_entry_special_remove (0, &pfx, nat_fib_src_hi); } } @@ -2946,7 +3138,8 @@ format_ed_session_kvp (u8 * s, va_list * args) } static u32 -snat_get_worker_in2out_cb (ip4_header_t * ip0, u32 rx_fib_index0) +snat_get_worker_in2out_cb (ip4_header_t * ip0, u32 rx_fib_index0, + u8 is_output) { snat_main_t *sm = &snat_main; u32 next_worker_index = 0; @@ -2965,7 +3158,8 @@ snat_get_worker_in2out_cb (ip4_header_t * ip0, u32 rx_fib_index0) } static u32 -snat_get_worker_out2in_cb (ip4_header_t * ip0, u32 rx_fib_index0) +snat_get_worker_out2in_cb (vlib_buffer_t * b, ip4_header_t * ip0, + u32 rx_fib_index0, u8 is_output) { snat_main_t *sm = &snat_main; udp_header_t *udp; @@ -2996,52 +3190,6 @@ snat_get_worker_out2in_cb (ip4_header_t * ip0, u32 rx_fib_index0) udp = ip4_next_header (ip0); port = udp->dst_port; - if (PREDICT_FALSE (ip4_is_fragment (ip0))) - { - if (PREDICT_FALSE (nat_reass_is_drop_frag (0))) - return vlib_get_thread_index (); - - nat_reass_ip4_t *reass; - reass = nat_ip4_reass_find (ip0->src_address, ip0->dst_address, - ip0->fragment_id, ip0->protocol); - - if (reass && (reass->thread_index != (u32) ~ 0)) - return reass->thread_index; - - if (ip4_is_first_fragment (ip0)) - { - reass = - nat_ip4_reass_create (ip0->src_address, ip0->dst_address, - ip0->fragment_id, ip0->protocol); - if (!reass) - goto no_reass; - - if (PREDICT_FALSE (pool_elts (sm->static_mappings))) - { - m_key.addr = ip0->dst_address; - m_key.port = clib_net_to_host_u16 (port); - m_key.protocol = proto; - m_key.fib_index = rx_fib_index0; - kv.key = m_key.as_u64; - if (!clib_bihash_search_8_8 - (&sm->static_mapping_by_external, &kv, &value)) - { - m = pool_elt_at_index (sm->static_mappings, value.value); - reass->thread_index = m->workers[0]; - return reass->thread_index; - } - } - reass->thread_index = sm->first_worker_index; - reass->thread_index += - sm->workers[(clib_net_to_host_u16 (port) - 1024) / - sm->port_per_thread]; - return reass->thread_index; - } - else - return vlib_get_thread_index (); - } - -no_reass: /* unknown protocol */ if (PREDICT_FALSE (proto == ~0)) { @@ -3053,10 +3201,12 @@ no_reass: { icmp46_header_t *icmp = (icmp46_header_t *) udp; icmp_echo_header_t *echo = (icmp_echo_header_t *) (icmp + 1); - if (!icmp_is_error_message (icmp)) - port = echo->identifier; + if (!icmp_type_is_error_message + (vnet_buffer (b)->ip.reass.icmp_type_or_tcp_flags)) + port = vnet_buffer (b)->ip.reass.l4_src_port; else { + /* if error message, then it's not fragmented and we can access it */ ip4_header_t *inner_ip = (ip4_header_t *) (echo + 1); proto = ip_proto_to_snat_proto (inner_ip->protocol); void *l4_header = ip4_next_header (inner_ip); @@ -3101,16 +3251,178 @@ no_reass: } static u32 -nat44_ed_get_worker_out2in_cb (ip4_header_t * ip, u32 rx_fib_index) +nat44_ed_get_worker_in2out_cb (ip4_header_t * ip, u32 rx_fib_index, + u8 is_output) +{ + snat_main_t *sm = &snat_main; + u32 next_worker_index = sm->first_worker_index; + u32 hash; + + clib_bihash_kv_16_8_t kv16, value16; + snat_main_per_thread_data_t *tsm; + udp_header_t *udp; + + if (PREDICT_FALSE (is_output)) + { + u32 fib_index = sm->outside_fib_index; + nat_outside_fib_t *outside_fib; + fib_node_index_t fei = FIB_NODE_INDEX_INVALID; + fib_prefix_t pfx = { + .fp_proto = FIB_PROTOCOL_IP4, + .fp_len = 32, + .fp_addr = { + .ip4.as_u32 = ip->dst_address.as_u32, + } + , + }; + + udp = ip4_next_header (ip); + + switch (vec_len (sm->outside_fibs)) + { + case 0: + fib_index = sm->outside_fib_index; + break; + case 1: + fib_index = sm->outside_fibs[0].fib_index; + break; + default: + /* *INDENT-OFF* */ + vec_foreach (outside_fib, sm->outside_fibs) + { + fei = fib_table_lookup (outside_fib->fib_index, &pfx); + if (FIB_NODE_INDEX_INVALID != fei) + { + if (fib_entry_get_resolving_interface (fei) != ~0) + { + fib_index = outside_fib->fib_index; + break; + } + } + } + /* *INDENT-ON* */ + break; + } + + make_ed_kv (&kv16, &ip->src_address, &ip->dst_address, + ip->protocol, fib_index, udp->src_port, udp->dst_port); + + /* *INDENT-OFF* */ + vec_foreach (tsm, sm->per_thread_data) + { + if (PREDICT_TRUE (!clib_bihash_search_16_8 (&tsm->out2in_ed, + &kv16, &value16))) + { + next_worker_index += tsm->thread_index; + + nat_elog_debug_handoff ( + "HANDOFF IN2OUT-OUTPUT-FEATURE (session)", + next_worker_index, fib_index, + clib_net_to_host_u32 (ip->src_address.as_u32), + clib_net_to_host_u32 (ip->dst_address.as_u32)); + + return next_worker_index; + } + } + /* *INDENT-ON* */ + } + + hash = ip->src_address.as_u32 + (ip->src_address.as_u32 >> 8) + + (ip->src_address.as_u32 >> 16) + (ip->src_address.as_u32 >> 24); + + if (PREDICT_TRUE (is_pow2 (_vec_len (sm->workers)))) + next_worker_index += sm->workers[hash & (_vec_len (sm->workers) - 1)]; + else + next_worker_index += sm->workers[hash % _vec_len (sm->workers)]; + + if (PREDICT_TRUE (!is_output)) + { + nat_elog_debug_handoff ("HANDOFF IN2OUT", + next_worker_index, rx_fib_index, + clib_net_to_host_u32 (ip->src_address.as_u32), + clib_net_to_host_u32 (ip->dst_address.as_u32)); + } + else + { + nat_elog_debug_handoff ("HANDOFF IN2OUT-OUTPUT-FEATURE", + next_worker_index, rx_fib_index, + clib_net_to_host_u32 (ip->src_address.as_u32), + clib_net_to_host_u32 (ip->dst_address.as_u32)); + } + + return next_worker_index; +} + +static u32 +nat44_ed_get_worker_out2in_cb (vlib_buffer_t * b, ip4_header_t * ip, + u32 rx_fib_index, u8 is_output) { snat_main_t *sm = &snat_main; clib_bihash_kv_8_8_t kv, value; + clib_bihash_kv_16_8_t kv16, value16; + snat_main_per_thread_data_t *tsm; + u32 proto, next_worker_index = 0; udp_header_t *udp; u16 port; snat_static_mapping_t *m; u32 hash; + proto = ip_proto_to_snat_proto (ip->protocol); + + if (PREDICT_TRUE (proto == SNAT_PROTOCOL_UDP || proto == SNAT_PROTOCOL_TCP)) + { + udp = ip4_next_header (ip); + + make_ed_kv (&kv16, &ip->dst_address, &ip->src_address, + ip->protocol, rx_fib_index, udp->dst_port, udp->src_port); + + /* *INDENT-OFF* */ + vec_foreach (tsm, sm->per_thread_data) + { + if (PREDICT_TRUE (!clib_bihash_search_16_8 (&tsm->out2in_ed, + &kv16, &value16))) + { + next_worker_index = sm->first_worker_index + tsm->thread_index; + nat_elog_debug_handoff ("HANDOFF OUT2IN (session)", + next_worker_index, rx_fib_index, + clib_net_to_host_u32 (ip->src_address.as_u32), + clib_net_to_host_u32 (ip->dst_address.as_u32)); + return next_worker_index; + } + } + /* *INDENT-ON* */ + } + else if (proto == SNAT_PROTOCOL_ICMP) + { + nat_ed_ses_key_t key; + + if (!get_icmp_o2i_ed_key (b, ip, &key)) + { + + key.fib_index = rx_fib_index; + kv16.key[0] = key.as_u64[0]; + kv16.key[1] = key.as_u64[1]; + + /* *INDENT-OFF* */ + vec_foreach (tsm, sm->per_thread_data) + { + if (PREDICT_TRUE (!clib_bihash_search_16_8 (&tsm->out2in_ed, + &kv16, &value16))) + { + next_worker_index = sm->first_worker_index + + tsm->thread_index; + nat_elog_debug_handoff ("HANDOFF OUT2IN (session)", + next_worker_index, rx_fib_index, + clib_net_to_host_u32 (ip->src_address.as_u32), + clib_net_to_host_u32 (ip->dst_address.as_u32)); + return next_worker_index; + } + } + /* *INDENT-ON* */ + } + } + /* first try static mappings without port */ if (PREDICT_FALSE (pool_elts (sm->static_mappings))) { @@ -3119,17 +3431,17 @@ nat44_ed_get_worker_out2in_cb (ip4_header_t * ip, u32 rx_fib_index) (&sm->static_mapping_by_external, &kv, &value)) { m = pool_elt_at_index (sm->static_mappings, value.value); - return m->workers[0]; + next_worker_index = m->workers[0]; + goto done; } } - proto = ip_proto_to_snat_proto (ip->protocol); - /* unknown protocol */ if (PREDICT_FALSE (proto == ~0)) { /* use current thread */ - return vlib_get_thread_index (); + next_worker_index = vlib_get_thread_index (); + goto done; } udp = ip4_next_header (ip); @@ -3139,10 +3451,12 @@ nat44_ed_get_worker_out2in_cb (ip4_header_t * ip, u32 rx_fib_index) { icmp46_header_t *icmp = (icmp46_header_t *) udp; icmp_echo_header_t *echo = (icmp_echo_header_t *) (icmp + 1); - if (!icmp_is_error_message (icmp)) - port = echo->identifier; + if (!icmp_type_is_error_message + (vnet_buffer (b)->ip.reass.icmp_type_or_tcp_flags)) + port = vnet_buffer (b)->ip.reass.l4_src_port; else { + /* if error message, then it's not fragmented and we can access it */ ip4_header_t *inner_ip = (ip4_header_t *) (echo + 1); proto = ip_proto_to_snat_proto (inner_ip->protocol); void *l4_header = ip4_next_header (inner_ip); @@ -3158,7 +3472,8 @@ nat44_ed_get_worker_out2in_cb (ip4_header_t * ip, u32 rx_fib_index) port = ((tcp_udp_header_t *) l4_header)->src_port; break; default: - return vlib_get_thread_index (); + next_worker_index = vlib_get_thread_index (); + goto done; } } } @@ -3173,15 +3488,20 @@ nat44_ed_get_worker_out2in_cb (ip4_header_t * ip, u32 rx_fib_index) { m = pool_elt_at_index (sm->static_mappings, value.value); if (!is_lb_static_mapping (m)) - return m->workers[0]; + { + next_worker_index = m->workers[0]; + goto done; + } hash = ip->src_address.as_u32 + (ip->src_address.as_u32 >> 8) + (ip->src_address.as_u32 >> 16) + (ip->src_address.as_u32 >> 24); if (PREDICT_TRUE (is_pow2 (_vec_len (m->workers)))) - return m->workers[hash & (_vec_len (m->workers) - 1)]; + next_worker_index = + m->workers[hash & (_vec_len (m->workers) - 1)]; else - return m->workers[hash % _vec_len (m->workers)]; + next_worker_index = m->workers[hash % _vec_len (m->workers)]; + goto done; } } @@ -3190,6 +3510,10 @@ nat44_ed_get_worker_out2in_cb (ip4_header_t * ip, u32 rx_fib_index) next_worker_index += sm->workers[(clib_net_to_host_u16 (port) - 1024) / sm->port_per_thread]; +done: + nat_elog_debug_handoff ("HANDOFF OUT2IN", next_worker_index, rx_fib_index, + clib_net_to_host_u32 (ip->src_address.as_u32), + clib_net_to_host_u32 (ip->dst_address.as_u32)); return next_worker_index; } @@ -3526,24 +3850,36 @@ snat_config (vlib_main_t * vm, unformat_input_t * input) { snat_main_t *sm = &snat_main; nat66_main_t *nm = &nat66_main; - u32 translation_buckets = 1024; - u32 translation_memory_size = 128 << 20; - u32 user_buckets = 128; - u32 user_memory_size = 64 << 20; - u32 max_translations_per_user = 100; - u32 outside_vrf_id = 0; - u32 outside_ip6_vrf_id = 0; - u32 inside_vrf_id = 0; + //dslite_main_t *dm = &dslite_main; + snat_main_per_thread_data_t *tsm; + u32 static_mapping_buckets = 1024; u32 static_mapping_memory_size = 64 << 20; + u32 nat64_bib_buckets = 1024; u32 nat64_bib_memory_size = 128 << 20; + u32 nat64_st_buckets = 2048; u32 nat64_st_memory_size = 256 << 20; + + u32 user_buckets = 128; + u32 user_memory_size = 64 << 20; + u32 translation_buckets = 1024; + u32 translation_memory_size = 128 << 20; + + u32 max_translations_per_user = ~0; + + u32 outside_vrf_id = 0; + u32 outside_ip6_vrf_id = 0; + u32 inside_vrf_id = 0; u8 static_mapping_only = 0; u8 static_mapping_connection_tracking = 0; - snat_main_per_thread_data_t *tsm; - dslite_main_t *dm = &dslite_main; + + // configurable timeouts + u32 udp_timeout = SNAT_UDP_TIMEOUT; + u32 icmp_timeout = SNAT_ICMP_TIMEOUT; + u32 tcp_transitory_timeout = SNAT_TCP_TRANSITORY_TIMEOUT; + u32 tcp_established_timeout = SNAT_TCP_ESTABLISHED_TIMEOUT; sm->deterministic = 0; sm->out2in_dpo = 0; @@ -3554,6 +3890,14 @@ snat_config (vlib_main_t * vm, unformat_input_t * input) if (unformat (input, "translation hash buckets %d", &translation_buckets)) ; + else if (unformat (input, "udp timeout %d", &udp_timeout)) + ; + else if (unformat (input, "icmp timeout %d", &icmp_timeout)) + ; + else if (unformat (input, "tcp transitory timeout %d", + &tcp_transitory_timeout)); + else if (unformat (input, "tcp established timeout %d", + &tcp_established_timeout)); else if (unformat (input, "translation hash memory %d", &translation_memory_size)); else if (unformat (input, "user hash buckets %d", &user_buckets)) @@ -3591,8 +3935,8 @@ snat_config (vlib_main_t * vm, unformat_input_t * input) ; else if (unformat (input, "out2in dpo")) sm->out2in_dpo = 1; - else if (unformat (input, "dslite ce")) - dslite_set_ce (dm, 1); + //else if (unformat (input, "dslite ce")) + //dslite_set_ce (dm, 1); else if (unformat (input, "endpoint-dependent")) sm->endpoint_dependent = 1; else @@ -3612,26 +3956,37 @@ snat_config (vlib_main_t * vm, unformat_input_t * input) return clib_error_return (0, "out2in dpo mode available only for simple nat"); - /* for show commands, etc. */ + /* optionally configurable timeouts for testing purposes */ + sm->udp_timeout = udp_timeout; + sm->tcp_transitory_timeout = tcp_transitory_timeout; + sm->tcp_established_timeout = tcp_established_timeout; + sm->icmp_timeout = icmp_timeout; + + sm->min_timeout = nat44_minimal_timeout (sm); + + sm->user_buckets = user_buckets; + sm->user_memory_size = user_memory_size; + sm->translation_buckets = translation_buckets; sm->translation_memory_size = translation_memory_size; + /* do not exceed load factor 10 */ sm->max_translations = 10 * translation_buckets; - sm->user_buckets = user_buckets; - sm->user_memory_size = user_memory_size; - sm->max_translations_per_user = max_translations_per_user; + sm->max_translations_per_user = max_translations_per_user == ~0 ? + sm->max_translations : max_translations_per_user; + sm->outside_vrf_id = outside_vrf_id; sm->outside_fib_index = fib_table_find_or_create_and_lock (FIB_PROTOCOL_IP4, outside_vrf_id, - FIB_SOURCE_PLUGIN_HI); + nat_fib_src_hi); nm->outside_vrf_id = outside_ip6_vrf_id; nm->outside_fib_index = fib_table_find_or_create_and_lock (FIB_PROTOCOL_IP6, outside_ip6_vrf_id, - FIB_SOURCE_PLUGIN_HI); + nat_fib_src_hi); sm->inside_vrf_id = inside_vrf_id; sm->inside_fib_index = fib_table_find_or_create_and_lock (FIB_PROTOCOL_IP4, inside_vrf_id, - FIB_SOURCE_PLUGIN_HI); + nat_fib_src_hi); sm->static_mapping_only = static_mapping_only; sm->static_mapping_connection_tracking = static_mapping_connection_tracking; @@ -3650,11 +4005,17 @@ snat_config (vlib_main_t * vm, unformat_input_t * input) { if (sm->endpoint_dependent) { - sm->worker_in2out_cb = snat_get_worker_in2out_cb; + sm->worker_in2out_cb = nat44_ed_get_worker_in2out_cb; sm->worker_out2in_cb = nat44_ed_get_worker_out2in_cb; + + sm->handoff_out2in_index = nat_pre_out2in_node.index; + sm->handoff_in2out_index = nat_pre_in2out_node.index; + sm->handoff_in2out_output_index = nat44_ed_in2out_output_node.index; + sm->in2out_node_index = nat44_ed_in2out_node.index; sm->in2out_output_node_index = nat44_ed_in2out_output_node.index; sm->out2in_node_index = nat44_ed_out2in_node.index; + sm->icmp_match_in2out_cb = icmp_match_in2out_ed; sm->icmp_match_out2in_cb = icmp_match_out2in_ed; nat_affinity_init (vm); @@ -3665,6 +4026,11 @@ snat_config (vlib_main_t * vm, unformat_input_t * input) { sm->worker_in2out_cb = snat_get_worker_in2out_cb; sm->worker_out2in_cb = snat_get_worker_out2in_cb; + + sm->handoff_out2in_index = snat_in2out_node.index; + sm->handoff_in2out_index = snat_out2in_node.index; + sm->handoff_in2out_output_index = snat_in2out_output_node.index; + sm->in2out_node_index = snat_in2out_node.index; sm->in2out_output_node_index = snat_in2out_output_node.index; sm->out2in_node_index = snat_out2in_node.index; @@ -3678,6 +4044,12 @@ snat_config (vlib_main_t * vm, unformat_input_t * input) /* *INDENT-OFF* */ vec_foreach (tsm, sm->per_thread_data) { + tsm->min_session_timeout = 0; + + tsm->cleared = 0; + tsm->cleanup_runs = 0; + tsm->cleanup_timeout = 0; + if (sm->endpoint_dependent) { clib_bihash_init_16_8 (&tsm->in2out_ed, "in2out-ed", @@ -3976,7 +4348,7 @@ nat44_del_session (snat_main_t * sm, ip4_address_t * addr, u16 port, if (sm->num_workers > 1) tsm = vec_elt_at_index (sm->per_thread_data, - sm->worker_in2out_cb (&ip, fib_index)); + sm->worker_in2out_cb (&ip, fib_index, 0)); else tsm = vec_elt_at_index (sm->per_thread_data, sm->num_workers); @@ -4020,7 +4392,7 @@ nat44_del_ed_session (snat_main_t * sm, ip4_address_t * addr, u16 port, if (sm->num_workers > 1) tsm = vec_elt_at_index (sm->per_thread_data, - sm->worker_in2out_cb (&ip, fib_index)); + sm->worker_in2out_cb (&ip, fib_index, 0)); else tsm = vec_elt_at_index (sm->per_thread_data, sm->num_workers); @@ -4076,6 +4448,35 @@ nat_set_alloc_addr_and_port_default (void) sm->alloc_addr_and_port = nat_alloc_addr_and_port_default; } +VLIB_NODE_FN (nat_default_node) (vlib_main_t * vm, + vlib_node_runtime_t * node, + vlib_frame_t * frame) +{ + return 0; +} + +/* *INDENT-OFF* */ +VLIB_REGISTER_NODE (nat_default_node) = { + .name = "nat-default", + .vector_size = sizeof (u32), + .format_trace = 0, + .type = VLIB_NODE_TYPE_INTERNAL, + .n_errors = 0, + .n_next_nodes = NAT_N_NEXT, + .next_nodes = { + [NAT_NEXT_DROP] = "error-drop", + [NAT_NEXT_ICMP_ERROR] = "ip4-icmp-error", + [NAT_NEXT_IN2OUT_PRE] = "nat-pre-in2out", + [NAT_NEXT_OUT2IN_PRE] = "nat-pre-out2in", + [NAT_NEXT_IN2OUT_ED_FAST_PATH] = "nat44-ed-in2out", + [NAT_NEXT_IN2OUT_ED_SLOW_PATH] = "nat44-ed-in2out-slowpath", + [NAT_NEXT_IN2OUT_ED_OUTPUT_SLOW_PATH] = "nat44-ed-in2out-output-slowpath", + [NAT_NEXT_OUT2IN_ED_FAST_PATH] = "nat44-ed-out2in", + [NAT_NEXT_OUT2IN_ED_SLOW_PATH] = "nat44-ed-out2in-slowpath", + }, +}; +/* *INDENT-ON* */ + /* * fd.io coding-style-patch-verification: ON *