* under the License.
*/
+#include <vnet/plugin/plugin.h>
+#include <vpp/app/version.h>
+
#include <vnet/vnet.h>
#include <vnet/ip/ip.h>
#include <vnet/ip/ip4.h>
-#include <vnet/plugin/plugin.h>
-#include <nat/nat.h>
-#include <nat/nat_dpo.h>
-#include <nat/lib/ipfix_logging.h>
-#include <nat/lib/nat_syslog.h>
-#include <nat/nat_inlines.h>
-#include <nat/nat44/inlines.h>
-#include <nat/nat_affinity.h>
+#include <vnet/ip/ip_table.h>
+#include <vnet/ip/reass/ip4_sv_reass.h>
#include <vnet/fib/fib_table.h>
#include <vnet/fib/ip4_fib.h>
-#include <vnet/ip/reass/ip4_sv_reass.h>
-#include <vppinfra/bihash_16_8.h>
-#include <nat/nat44/ed_inlines.h>
-#include <vnet/ip/ip_table.h>
+#include <vnet/plugin/plugin.h>
+
+// nat lib
+#include <nat/lib/log.h>
+#include <nat/lib/nat_syslog.h>
+#include <nat/lib/nat_inlines.h>
+#include <nat/lib/ipfix_logging.h>
+#include <nat/nat44-ei/nat44_ei_dpo.h>
#include <nat/nat44-ei/nat44_ei_inlines.h>
#include <nat/nat44-ei/nat44_ei.h>
nat44_ei_main_t nat44_ei_main;
-static void nat44_ei_db_free ();
+extern vlib_node_registration_t nat44_ei_hairpinning_node;
+extern vlib_node_registration_t nat44_ei_hairpin_dst_node;
+extern vlib_node_registration_t
+ nat44_ei_in2out_hairpinning_finish_ip4_lookup_node;
+extern vlib_node_registration_t
+ nat44_ei_in2out_hairpinning_finish_interface_output_node;
+
+#define skip_if_disabled() \
+ do \
+ { \
+ nat44_ei_main_t *nm = &nat44_ei_main; \
+ if (PREDICT_FALSE (!nm->enabled)) \
+ return; \
+ } \
+ while (0)
+
+#define fail_if_enabled() \
+ do \
+ { \
+ nat44_ei_main_t *nm = &nat44_ei_main; \
+ if (PREDICT_FALSE (nm->enabled)) \
+ { \
+ nat44_ei_log_err ("plugin enabled"); \
+ return 1; \
+ } \
+ } \
+ while (0)
+
+#define fail_if_disabled() \
+ do \
+ { \
+ nat44_ei_main_t *nm = &nat44_ei_main; \
+ if (PREDICT_FALSE (!nm->enabled)) \
+ { \
+ nat44_ei_log_err ("plugin disabled"); \
+ return 1; \
+ } \
+ } \
+ while (0)
+
+/* Hook up input features */
+VNET_FEATURE_INIT (ip4_nat_classify, static) = {
+ .arc_name = "ip4-unicast",
+ .node_name = "nat44-ei-classify",
+ .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa",
+ "ip4-sv-reassembly-feature"),
+};
+VNET_FEATURE_INIT (ip4_nat44_ei_in2out, static) = {
+ .arc_name = "ip4-unicast",
+ .node_name = "nat44-ei-in2out",
+ .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa",
+ "ip4-sv-reassembly-feature"),
+};
+VNET_FEATURE_INIT (ip4_nat44_ei_out2in, static) = {
+ .arc_name = "ip4-unicast",
+ .node_name = "nat44-ei-out2in",
+ .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa",
+ "ip4-sv-reassembly-feature",
+ "ip4-dhcp-client-detect"),
+};
+VNET_FEATURE_INIT (ip4_nat44_ei_in2out_output, static) = {
+ .arc_name = "ip4-output",
+ .node_name = "nat44-ei-in2out-output",
+ .runs_after = VNET_FEATURES ("acl-plugin-out-ip4-fa",
+ "ip4-sv-reassembly-output-feature"),
+};
+VNET_FEATURE_INIT (ip4_nat44_ei_in2out_fast, static) = {
+ .arc_name = "ip4-unicast",
+ .node_name = "nat44-ei-in2out-fast",
+ .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa",
+ "ip4-sv-reassembly-feature"),
+};
+VNET_FEATURE_INIT (ip4_nat44_ei_out2in_fast, static) = {
+ .arc_name = "ip4-unicast",
+ .node_name = "nat44-ei-out2in-fast",
+ .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa",
+ "ip4-sv-reassembly-feature",
+ "ip4-dhcp-client-detect"),
+};
+VNET_FEATURE_INIT (ip4_nat44_ei_hairpin_dst, static) = {
+ .arc_name = "ip4-unicast",
+ .node_name = "nat44-ei-hairpin-dst",
+ .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa",
+ "ip4-sv-reassembly-feature"),
+};
+VNET_FEATURE_INIT (ip4_nat44_ei_hairpin_src, static) = {
+ .arc_name = "ip4-output",
+ .node_name = "nat44-ei-hairpin-src",
+ .runs_after = VNET_FEATURES ("acl-plugin-out-ip4-fa",
+ "ip4-sv-reassembly-output-feature"),
+};
+VNET_FEATURE_INIT (ip4_nat44_ei_hairpinning, static) = {
+ .arc_name = "ip4-local",
+ .node_name = "nat44-ei-hairpinning",
+ .runs_before = VNET_FEATURES ("ip4-local-end-of-arc"),
+};
+VNET_FEATURE_INIT (ip4_nat44_ei_in2out_worker_handoff, static) = {
+ .arc_name = "ip4-unicast",
+ .node_name = "nat44-ei-in2out-worker-handoff",
+ .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa"),
+};
+VNET_FEATURE_INIT (ip4_nat44_ei_out2in_worker_handoff, static) = {
+ .arc_name = "ip4-unicast",
+ .node_name = "nat44-ei-out2in-worker-handoff",
+ .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa",
+ "ip4-dhcp-client-detect"),
+};
+VNET_FEATURE_INIT (ip4_nat44_ei_in2out_output_worker_handoff, static) = {
+ .arc_name = "ip4-output",
+ .node_name = "nat44-ei-in2out-output-worker-handoff",
+ .runs_after = VNET_FEATURES ("acl-plugin-out-ip4-fa",
+ "ip4-sv-reassembly-output-feature"),
+};
+
+VLIB_PLUGIN_REGISTER () = {
+ .version = VPP_BUILD_VER,
+ .description = "IPv4 Endpoint-Independent NAT (NAT44 EI)",
+};
+
+#define foreach_nat44_ei_classify_error \
+ _ (NEXT_IN2OUT, "next in2out") \
+ _ (NEXT_OUT2IN, "next out2in") \
+ _ (FRAG_CACHED, "fragment cached")
+
+typedef enum
+{
+#define _(sym, str) NAT44_EI_CLASSIFY_ERROR_##sym,
+ foreach_nat44_ei_classify_error
+#undef _
+ NAT44_EI_CLASSIFY_N_ERROR,
+} nat44_ei_classify_error_t;
-static void nat44_ei_db_init (u32 translations, u32 translation_buckets,
- u32 user_buckets);
+static char *nat44_ei_classify_error_strings[] = {
+#define _(sym, string) string,
+ foreach_nat44_ei_classify_error
+#undef _
+};
-int
-nat44_ei_plugin_enable (nat44_ei_config_t c)
+typedef enum
{
- nat44_ei_main_t *nm = &nat44_ei_main;
- snat_main_t *sm = &snat_main;
+ NAT44_EI_CLASSIFY_NEXT_IN2OUT,
+ NAT44_EI_CLASSIFY_NEXT_OUT2IN,
+ NAT44_EI_CLASSIFY_NEXT_DROP,
+ NAT44_EI_CLASSIFY_N_NEXT,
+} nat44_ei_classify_next_t;
- clib_memset (nm, 0, sizeof (*nm));
+typedef struct
+{
+ u8 next_in2out;
+ u8 cached;
+} nat44_ei_classify_trace_t;
- if (!c.users)
- c.users = 1024;
+void nat44_ei_add_del_addr_to_fib (ip4_address_t *addr, u8 p_len,
+ u32 sw_if_index, int is_add);
- if (!c.sessions)
- c.sessions = 10 * 1024;
+static u8 *
+format_nat44_ei_classify_trace (u8 *s, va_list *args)
+{
+ CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
+ CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
+ nat44_ei_classify_trace_t *t = va_arg (*args, nat44_ei_classify_trace_t *);
+ char *next;
- nm->rconfig = c;
+ if (t->cached)
+ s = format (s, "nat44-ei-classify: fragment cached");
+ else
+ {
+ next = t->next_in2out ? "nat44-ei-in2out" : "nat44-ei-out2in";
+ s = format (s, "nat44-ei-classify: next %s", next);
+ }
- nm->translations = c.sessions;
- nm->translation_buckets = nat_calc_bihash_buckets (c.sessions);
- nm->user_buckets = nat_calc_bihash_buckets (c.users);
+ return s;
+}
- // OBSOLETE
+static void nat44_ei_db_free ();
- sm->static_mapping_only = c.static_mapping_only;
- sm->static_mapping_connection_tracking = c.connection_tracking;
- sm->out2in_dpo = c.out2in_dpo;
- sm->forwarding_enabled = 0;
- sm->mss_clamping = 0;
- sm->pat = (!c.static_mapping_only ||
- (c.static_mapping_only && c.connection_tracking));
+static void nat44_ei_db_init (u32 translations, u32 translation_buckets,
+ u32 user_buckets);
- sm->max_users_per_thread = c.users;
- sm->max_translations_per_thread = c.sessions;
- sm->translation_buckets = nat_calc_bihash_buckets (c.sessions);
- sm->max_translations_per_user =
- c.user_sessions ? c.user_sessions : sm->max_translations_per_thread;
+static void nat44_ei_ip4_add_del_interface_address_cb (
+ ip4_main_t *im, uword opaque, u32 sw_if_index, ip4_address_t *address,
+ u32 address_length, u32 if_address_index, u32 is_delete);
- sm->inside_vrf_id = c.inside_vrf;
- sm->inside_fib_index = fib_table_find_or_create_and_lock (
- FIB_PROTOCOL_IP4, c.inside_vrf, sm->fib_src_hi);
+static void nat44_ei_ip4_add_del_addr_only_sm_cb (
+ ip4_main_t *im, uword opaque, u32 sw_if_index, ip4_address_t *address,
+ u32 address_length, u32 if_address_index, u32 is_delete);
- sm->outside_vrf_id = c.outside_vrf;
- sm->outside_fib_index = fib_table_find_or_create_and_lock (
- FIB_PROTOCOL_IP4, c.outside_vrf, sm->fib_src_hi);
+static void nat44_ei_update_outside_fib (ip4_main_t *im, uword opaque,
+ u32 sw_if_index, u32 new_fib_index,
+ u32 old_fib_index);
- sm->worker_in2out_cb = nat44_ei_get_in2out_worker_index;
- sm->worker_out2in_cb = nat44_ei_get_out2in_worker_index;
+void
+nat44_ei_set_node_indexes (nat44_ei_main_t *nm, vlib_main_t *vm)
+{
+ vlib_node_t *node;
+ node = vlib_get_node_by_name (vm, (u8 *) "nat44-ei-out2in");
+ nm->out2in_node_index = node->index;
+ node = vlib_get_node_by_name (vm, (u8 *) "nat44-ei-in2out");
+ nm->in2out_node_index = node->index;
+ node = vlib_get_node_by_name (vm, (u8 *) "nat44-ei-in2out-output");
+ nm->in2out_output_node_index = node->index;
+}
- sm->in2out_node_index = sm->ei_in2out_node_index;
- sm->out2in_node_index = sm->ei_out2in_node_index;
+int
+nat44_ei_set_workers (uword *bitmap)
+{
+ nat44_ei_main_t *nm = &nat44_ei_main;
+ int i, j = 0;
- sm->in2out_output_node_index = sm->ei_in2out_output_node_index;
+ if (nm->num_workers < 2)
+ return VNET_API_ERROR_FEATURE_DISABLED;
- if (sm->pat)
- {
- sm->icmp_match_in2out_cb = icmp_match_in2out_slow;
- sm->icmp_match_out2in_cb = icmp_match_out2in_slow;
- }
- else
+ if (clib_bitmap_last_set (bitmap) >= nm->num_workers)
+ return VNET_API_ERROR_INVALID_WORKER;
+
+ vec_free (nm->workers);
+ clib_bitmap_foreach (i, bitmap)
{
- sm->icmp_match_in2out_cb = icmp_match_in2out_fast;
- sm->icmp_match_out2in_cb = icmp_match_out2in_fast;
+ vec_add1 (nm->workers, i);
+ nm->per_thread_data[nm->first_worker_index + i].snat_thread_index = j;
+ nm->per_thread_data[nm->first_worker_index + i].thread_index = i;
+ j++;
}
- nat_reset_timeouts (&sm->timeouts);
- nat44_ei_db_init (nm->translations, nm->translation_buckets,
- nm->user_buckets);
- nat44_ei_set_alloc_default ();
- nat_ha_enable ();
-
- // TODO: function for reset counters
- vlib_zero_simple_counter (&sm->total_users, 0);
- vlib_zero_simple_counter (&sm->total_sessions, 0);
- vlib_zero_simple_counter (&sm->user_limit_reached, 0);
+ nm->port_per_thread = (0xffff - 1024) / _vec_len (nm->workers);
- if (!sm->frame_queue_nelts)
- sm->frame_queue_nelts = NAT_FQ_NELTS_DEFAULT;
+ return 0;
+}
- sm->enabled = 1;
+#define nat_validate_simple_counter(c, i) \
+ do \
+ { \
+ vlib_validate_simple_counter (&c, i); \
+ vlib_zero_simple_counter (&c, i); \
+ } \
+ while (0);
+
+#define nat_init_simple_counter(c, n, sn) \
+ do \
+ { \
+ c.name = n; \
+ c.stat_segment_name = sn; \
+ nat_validate_simple_counter (c, 0); \
+ } \
+ while (0);
- return 0;
+static_always_inline void
+nat_validate_interface_counters (nat44_ei_main_t *nm, u32 sw_if_index)
+{
+#define _(x) \
+ nat_validate_simple_counter (nm->counters.fastpath.in2out.x, sw_if_index); \
+ nat_validate_simple_counter (nm->counters.fastpath.out2in.x, sw_if_index); \
+ nat_validate_simple_counter (nm->counters.slowpath.in2out.x, sw_if_index); \
+ nat_validate_simple_counter (nm->counters.slowpath.out2in.x, sw_if_index);
+ foreach_nat_counter;
+#undef _
+ nat_validate_simple_counter (nm->counters.hairpinning, sw_if_index);
}
-int
-nat44_ei_plugin_disable ()
+clib_error_t *
+nat44_ei_init (vlib_main_t *vm)
{
nat44_ei_main_t *nm = &nat44_ei_main;
- snat_main_t *sm = &snat_main;
- snat_interface_t *i, *vec;
- int error = 0;
+ vlib_thread_main_t *tm = vlib_get_thread_main ();
+ vlib_thread_registration_t *tr;
+ ip4_add_del_interface_address_callback_t cbi = { 0 };
+ ip4_table_bind_callback_t cbt = { 0 };
+ u32 i, num_threads = 0;
+ uword *p, *bitmap = 0;
- // first unregister all nodes from interfaces
- vec = vec_dup (sm->interfaces);
- vec_foreach (i, vec)
- {
- if (nat_interface_is_inside (i))
- error = snat_interface_add_del (i->sw_if_index, 1, 1);
- if (nat_interface_is_outside (i))
- error = snat_interface_add_del (i->sw_if_index, 0, 1);
+ clib_memset (nm, 0, sizeof (*nm));
- if (error)
+ // required
+ nm->vnet_main = vnet_get_main ();
+ // convenience
+ nm->ip4_main = &ip4_main;
+ nm->api_main = vlibapi_get_main ();
+ nm->ip4_lookup_main = &ip4_main.lookup_main;
+
+ // handoff stuff
+ nm->fq_out2in_index = ~0;
+ nm->fq_in2out_index = ~0;
+ nm->fq_in2out_output_index = ~0;
+ nm->worker_in2out_cb = nat44_ei_get_in2out_worker_index;
+ nm->worker_out2in_cb = nat44_ei_get_out2in_worker_index;
+
+ nm->log_level = NAT_LOG_ERROR;
+
+ nat44_ei_set_node_indexes (nm, vm);
+ nm->log_class = vlib_log_register_class ("nat44-ei", 0);
+
+ nat_init_simple_counter (nm->total_users, "total-users",
+ "/nat44-ei/total-users");
+ nat_init_simple_counter (nm->total_sessions, "total-sessions",
+ "/nat44-ei/total-sessions");
+ nat_init_simple_counter (nm->user_limit_reached, "user-limit-reached",
+ "/nat44-ei/user-limit-reached");
+
+#define _(x) \
+ nat_init_simple_counter (nm->counters.fastpath.in2out.x, #x, \
+ "/nat44-ei/in2out/fastpath/" #x); \
+ nat_init_simple_counter (nm->counters.fastpath.out2in.x, #x, \
+ "/nat44-ei/out2in/fastpath/" #x); \
+ nat_init_simple_counter (nm->counters.slowpath.in2out.x, #x, \
+ "/nat44-ei/in2out/slowpath/" #x); \
+ nat_init_simple_counter (nm->counters.slowpath.out2in.x, #x, \
+ "/nat44-ei/out2in/slowpath/" #x);
+ foreach_nat_counter;
+#undef _
+ nat_init_simple_counter (nm->counters.hairpinning, "hairpinning",
+ "/nat44-ei/hairpinning");
+
+ p = hash_get_mem (tm->thread_registrations_by_name, "workers");
+ if (p)
+ {
+ tr = (vlib_thread_registration_t *) p[0];
+ if (tr)
{
- nat_log_err ("error occurred while removing interface %u",
- i->sw_if_index);
+ nm->num_workers = tr->count;
+ nm->first_worker_index = tr->first_index;
}
}
- vec_free (vec);
- sm->interfaces = 0;
+ num_threads = tm->n_vlib_mains - 1;
+ nm->port_per_thread = 0xffff - 1024;
+ vec_validate (nm->per_thread_data, num_threads);
- vec = vec_dup (sm->output_feature_interfaces);
- vec_foreach (i, vec)
+ /* Use all available workers by default */
+ if (nm->num_workers > 1)
{
- if (nat_interface_is_inside (i))
- error = snat_interface_add_del_output_feature (i->sw_if_index, 1, 1);
- if (nat_interface_is_outside (i))
- error = snat_interface_add_del_output_feature (i->sw_if_index, 0, 1);
- if (error)
- {
- nat_log_err ("error occurred while removing interface %u",
- i->sw_if_index);
- }
+ for (i = 0; i < nm->num_workers; i++)
+ bitmap = clib_bitmap_set (bitmap, i, 1);
+ nat44_ei_set_workers (bitmap);
+ clib_bitmap_free (bitmap);
}
- vec_free (vec);
- sm->output_feature_interfaces = 0;
+ else
+ nm->per_thread_data[0].snat_thread_index = 0;
+
+ /* callbacks to call when interface address changes. */
+ cbi.function = nat44_ei_ip4_add_del_interface_address_cb;
+ vec_add1 (nm->ip4_main->add_del_interface_address_callbacks, cbi);
+ cbi.function = nat44_ei_ip4_add_del_addr_only_sm_cb;
+ vec_add1 (nm->ip4_main->add_del_interface_address_callbacks, cbi);
+
+ /* callbacks to call when interface to table biding changes */
+ cbt.function = nat44_ei_update_outside_fib;
+ vec_add1 (nm->ip4_main->table_bind_callbacks, cbt);
+
+ nm->fib_src_low = fib_source_allocate (
+ "nat44-ei-low", FIB_SOURCE_PRIORITY_LOW, FIB_SOURCE_BH_SIMPLE);
+ nm->fib_src_hi = fib_source_allocate ("nat44-ei-hi", FIB_SOURCE_PRIORITY_HI,
+ FIB_SOURCE_BH_SIMPLE);
+
+ // used only by out2in-dpo feature
+ nat_dpo_module_init ();
+ nat_ha_init (vm, nm->num_workers, num_threads);
+
+ nm->hairpinning_fq_index =
+ vlib_frame_queue_main_init (nat44_ei_hairpinning_node.index, 0);
+ nm->hairpin_dst_fq_index =
+ vlib_frame_queue_main_init (nat44_ei_hairpin_dst_node.index, 0);
+ nm->in2out_hairpinning_finish_ip4_lookup_node_fq_index =
+ vlib_frame_queue_main_init (
+ nat44_ei_in2out_hairpinning_finish_ip4_lookup_node.index, 0);
+ nm->in2out_hairpinning_finish_interface_output_node_fq_index =
+ vlib_frame_queue_main_init (
+ nat44_ei_in2out_hairpinning_finish_interface_output_node.index, 0);
+ return nat44_ei_api_hookup (vm);
+}
- nat_ha_disable ();
- nat44_ei_db_free ();
+VLIB_INIT_FUNCTION (nat44_ei_init);
- nat44_addresses_free (&sm->addresses);
- nat44_addresses_free (&sm->twice_nat_addresses);
+int
+nat44_ei_plugin_enable (nat44_ei_config_t c)
+{
+ nat44_ei_main_t *nm = &nat44_ei_main;
- vec_free (sm->to_resolve);
- vec_free (sm->auto_add_sw_if_indices);
- vec_free (sm->auto_add_sw_if_indices_twice_nat);
+ fail_if_enabled ();
- sm->to_resolve = 0;
- sm->auto_add_sw_if_indices = 0;
- sm->auto_add_sw_if_indices_twice_nat = 0;
+ if (!c.users)
+ c.users = 1024;
- sm->forwarding_enabled = 0;
+ if (!c.sessions)
+ c.sessions = 10 * 1024;
- sm->enabled = 0;
- clib_memset (&nm->rconfig, 0, sizeof (nm->rconfig));
- clib_memset (&sm->rconfig, 0, sizeof (sm->rconfig));
+ nm->rconfig = c;
- return error;
-}
+ if (!nm->frame_queue_nelts)
+ nm->frame_queue_nelts = NAT_FQ_NELTS_DEFAULT;
-void
-nat44_ei_free_session_data (snat_main_t *sm, snat_session_t *s,
- u32 thread_index, u8 is_ha)
-{
- clib_bihash_kv_8_8_t kv;
+ nm->translations = c.sessions;
+ nm->translation_buckets = nat_calc_bihash_buckets (c.sessions);
+ nm->user_buckets = nat_calc_bihash_buckets (c.users);
- init_nat_i2o_k (&kv, s);
- if (clib_bihash_add_del_8_8 (&sm->in2out, &kv, 0))
- nat_elog_warn ("in2out key del failed");
+ nm->pat = (!c.static_mapping_only ||
+ (c.static_mapping_only && c.connection_tracking));
- init_nat_o2i_k (&kv, s);
- if (clib_bihash_add_del_8_8 (&sm->out2in, &kv, 0))
- nat_elog_warn ("out2in key del failed");
+ nm->static_mapping_only = c.static_mapping_only;
+ nm->static_mapping_connection_tracking = c.connection_tracking;
+ nm->out2in_dpo = c.out2in_dpo;
+ nm->forwarding_enabled = 0;
+ nm->mss_clamping = 0;
- if (!is_ha)
- {
- nat_syslog_nat44_apmdel (s->user_index, s->in2out.fib_index,
- &s->in2out.addr, s->in2out.port,
- &s->out2in.addr, s->out2in.port, s->nat_proto);
+ nm->max_users_per_thread = c.users;
+ nm->max_translations_per_thread = c.sessions;
+ nm->max_translations_per_user =
+ c.user_sessions ? c.user_sessions : nm->max_translations_per_thread;
- nat_ipfix_logging_nat44_ses_delete (
- thread_index, s->in2out.addr.as_u32, s->out2in.addr.as_u32,
- s->nat_proto, s->in2out.port, s->out2in.port, s->in2out.fib_index);
+ nm->inside_vrf_id = c.inside_vrf;
+ nm->inside_fib_index = fib_table_find_or_create_and_lock (
+ FIB_PROTOCOL_IP4, c.inside_vrf, nm->fib_src_hi);
- nat_ha_sdel (&s->out2in.addr, s->out2in.port, &s->ext_host_addr,
- s->ext_host_port, s->nat_proto, s->out2in.fib_index,
- thread_index);
- }
+ nm->outside_vrf_id = c.outside_vrf;
+ nm->outside_fib_index = fib_table_find_or_create_and_lock (
+ FIB_PROTOCOL_IP4, c.outside_vrf, nm->fib_src_hi);
- if (snat_is_session_static (s))
- return;
+ nat_reset_timeouts (&nm->timeouts);
+ nat44_ei_db_init (nm->translations, nm->translation_buckets,
+ nm->user_buckets);
+ nat44_ei_set_alloc_default ();
- snat_free_outside_address_and_port (sm->addresses, thread_index,
- &s->out2in.addr, s->out2in.port,
- s->nat_proto);
-}
+ // TODO: zero simple counter for all counters missing
-static_always_inline void
-nat44_ei_user_del_sessions (snat_user_t *u, u32 thread_index)
-{
- dlist_elt_t *elt;
- snat_session_t *s;
+ vlib_zero_simple_counter (&nm->total_users, 0);
+ vlib_zero_simple_counter (&nm->total_sessions, 0);
+ vlib_zero_simple_counter (&nm->user_limit_reached, 0);
- snat_main_t *sm = &snat_main;
- snat_main_per_thread_data_t *tsm = &sm->per_thread_data[thread_index];
+ nat_ha_enable ();
+ nm->enabled = 1;
- // get head
- elt =
- pool_elt_at_index (tsm->list_pool, u->sessions_per_user_list_head_index);
- // get first element
- elt = pool_elt_at_index (tsm->list_pool, elt->next);
+ return 0;
+}
- while (elt->value != ~0)
+void
+nat44_ei_addresses_free (nat44_ei_address_t **addresses)
+{
+ nat44_ei_address_t *ap;
+ vec_foreach (ap, *addresses)
{
- s = pool_elt_at_index (tsm->sessions, elt->value);
- elt = pool_elt_at_index (tsm->list_pool, elt->next);
-
- nat44_ei_free_session_data (sm, s, thread_index, 0);
- nat44_delete_session (sm, s, thread_index);
+#define _(N, i, n, s) vec_free (ap->busy_##n##_ports_per_thread);
+ foreach_nat_protocol
+#undef _
}
+ vec_free (*addresses);
+ *addresses = 0;
}
int
-nat44_ei_user_del (ip4_address_t *addr, u32 fib_index)
+nat44_ei_interface_add_del (u32 sw_if_index, u8 is_inside, int is_del)
{
- int rv = 1;
+ const char *feature_name, *del_feature_name;
+ nat44_ei_main_t *nm = &nat44_ei_main;
+ nat44_ei_interface_t *i;
+ nat44_ei_address_t *ap;
+ nat44_ei_static_mapping_t *m;
+ nat44_ei_outside_fib_t *outside_fib;
+ u32 fib_index =
+ fib_table_get_index_for_sw_if_index (FIB_PROTOCOL_IP4, sw_if_index);
- snat_main_t *sm = &snat_main;
- snat_main_per_thread_data_t *tsm;
+ fail_if_disabled ();
- snat_user_key_t user_key;
- clib_bihash_kv_8_8_t kv, value;
+ if (nm->out2in_dpo && !is_inside)
+ {
+ nat44_ei_log_err ("error unsupported");
+ return VNET_API_ERROR_UNSUPPORTED;
+ }
- if (sm->endpoint_dependent)
- return rv;
+ pool_foreach (i, nm->output_feature_interfaces)
+ {
+ if (i->sw_if_index == sw_if_index)
+ {
+ nat44_ei_log_err ("error interface already configured");
+ return VNET_API_ERROR_VALUE_EXIST;
+ }
+ }
- user_key.addr.as_u32 = addr->as_u32;
- user_key.fib_index = fib_index;
- kv.key = user_key.as_u64;
+ if (nm->static_mapping_only && !(nm->static_mapping_connection_tracking))
+ feature_name = is_inside ? "nat44-ei-in2out-fast" : "nat44-ei-out2in-fast";
+ else
+ {
+ if (nm->num_workers > 1)
+ feature_name = is_inside ? "nat44-ei-in2out-worker-handoff" :
+ "nat44-ei-out2in-worker-handoff";
+ else
+ feature_name = is_inside ? "nat44-ei-in2out" : "nat44-ei-out2in";
+ }
- if (sm->num_workers > 1)
+ if (nm->fq_in2out_index == ~0 && nm->num_workers > 1)
+ nm->fq_in2out_index = vlib_frame_queue_main_init (nm->in2out_node_index,
+ nm->frame_queue_nelts);
+
+ if (nm->fq_out2in_index == ~0 && nm->num_workers > 1)
+ nm->fq_out2in_index = vlib_frame_queue_main_init (nm->out2in_node_index,
+ nm->frame_queue_nelts);
+
+ if (!is_inside)
{
- vec_foreach (tsm, sm->per_thread_data)
+ vec_foreach (outside_fib, nm->outside_fibs)
{
- if (!clib_bihash_search_8_8 (&tsm->user_hash, &kv, &value))
+ if (outside_fib->fib_index == fib_index)
{
- nat44_ei_user_del_sessions (
- pool_elt_at_index (tsm->users, value.value),
- tsm->thread_index);
- rv = 0;
- break;
+ if (is_del)
+ {
+ outside_fib->refcount--;
+ if (!outside_fib->refcount)
+ vec_del1 (nm->outside_fibs,
+ outside_fib - nm->outside_fibs);
+ }
+ else
+ outside_fib->refcount++;
+ goto feature_set;
}
}
- }
- else
- {
- tsm = vec_elt_at_index (sm->per_thread_data, sm->num_workers);
- if (!clib_bihash_search_8_8 (&tsm->user_hash, &kv, &value))
+ if (!is_del)
{
- nat44_ei_user_del_sessions (
- pool_elt_at_index (tsm->users, value.value), tsm->thread_index);
- rv = 0;
+ vec_add2 (nm->outside_fibs, outside_fib, 1);
+ outside_fib->refcount = 1;
+ outside_fib->fib_index = fib_index;
}
}
- return rv;
-}
-
-void
-nat44_ei_static_mapping_del_sessions (snat_main_t *sm,
- snat_main_per_thread_data_t *tsm,
- snat_user_key_t u_key, int addr_only,
- ip4_address_t e_addr, u16 e_port)
-{
- clib_bihash_kv_8_8_t kv, value;
- kv.key = u_key.as_u64;
- u64 user_index;
- dlist_elt_t *head, *elt;
- snat_user_t *u;
- snat_session_t *s;
- u32 elt_index, head_index, ses_index;
- if (!clib_bihash_search_8_8 (&tsm->user_hash, &kv, &value))
+feature_set:
+ pool_foreach (i, nm->interfaces)
{
- user_index = value.value;
- u = pool_elt_at_index (tsm->users, user_index);
- if (u->nstaticsessions)
+ if (i->sw_if_index == sw_if_index)
{
- head_index = u->sessions_per_user_list_head_index;
- head = pool_elt_at_index (tsm->list_pool, head_index);
- elt_index = head->next;
- elt = pool_elt_at_index (tsm->list_pool, elt_index);
- ses_index = elt->value;
- while (ses_index != ~0)
+ if (is_del)
{
- s = pool_elt_at_index (tsm->sessions, ses_index);
- elt = pool_elt_at_index (tsm->list_pool, elt->next);
- ses_index = elt->value;
-
- if (!addr_only)
+ if (nat44_ei_interface_is_inside (i) &&
+ nat44_ei_interface_is_outside (i))
{
- if ((s->out2in.addr.as_u32 != e_addr.as_u32) ||
- (s->out2in.port != e_port))
- continue;
- }
+ if (is_inside)
+ i->flags &= ~NAT44_EI_INTERFACE_FLAG_IS_INSIDE;
+ else
+ i->flags &= ~NAT44_EI_INTERFACE_FLAG_IS_OUTSIDE;
- if (is_lb_session (s))
- continue;
+ if (nm->num_workers > 1)
+ {
+ del_feature_name = "nat44-handoff-classify";
+ feature_name = !is_inside ?
+ "nat44-ei-in2out-worker-handoff" :
+ "nat44-ei-out2in-worker-handoff";
+ }
+ else
+ {
+ del_feature_name = "nat44-ei-classify";
+ feature_name =
+ !is_inside ? "nat44-ei-in2out" : "nat44-ei-out2in";
+ }
- if (!snat_is_session_static (s))
- continue;
+ 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,
+ sw_if_index, 1, 0, 0);
+ if (!is_inside)
+ {
+ vnet_feature_enable_disable ("ip4-local",
+ "nat44-ei-hairpinning",
+ sw_if_index, 1, 0, 0);
+ }
+ }
+ 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 (nm->interfaces, i);
+ if (is_inside)
+ {
+ vnet_feature_enable_disable ("ip4-local",
+ "nat44-ei-hairpinning",
+ sw_if_index, 0, 0, 0);
+ }
+ }
+ }
+ else
+ {
+ if ((nat44_ei_interface_is_inside (i) && is_inside) ||
+ (nat44_ei_interface_is_outside (i) && !is_inside))
+ return 0;
- nat_free_session_data (sm, s, tsm - sm->per_thread_data, 0);
- nat44_delete_session (sm, s, tsm - sm->per_thread_data);
+ if (nm->num_workers > 1)
+ {
+ del_feature_name = !is_inside ?
+ "nat44-ei-in2out-worker-handoff" :
+ "nat44-ei-out2in-worker-handoff";
+ feature_name = "nat44-handoff-classify";
+ }
+ else
+ {
+ del_feature_name =
+ !is_inside ? "nat44-ei-in2out" : "nat44-ei-out2in";
+ feature_name = "nat44-ei-classify";
+ }
- if (!addr_only)
- break;
+ 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,
+ sw_if_index, 1, 0, 0);
+ if (!is_inside)
+ {
+ vnet_feature_enable_disable (
+ "ip4-local", "nat44-ei-hairpinning", sw_if_index, 0, 0, 0);
+ }
+ goto set_flags;
}
+
+ goto fib;
}
}
-}
-u32
-nat44_ei_get_in2out_worker_index (ip4_header_t *ip0, u32 rx_fib_index0,
- u8 is_output)
-{
- snat_main_t *sm = &snat_main;
- u32 next_worker_index = 0;
- u32 hash;
+ if (is_del)
+ {
+ nat44_ei_log_err ("error interface couldn't be found");
+ return VNET_API_ERROR_NO_SUCH_ENTRY;
+ }
- next_worker_index = sm->first_worker_index;
- hash = ip0->src_address.as_u32 + (ip0->src_address.as_u32 >> 8) +
- (ip0->src_address.as_u32 >> 16) + (ip0->src_address.as_u32 >> 24);
+ pool_get (nm->interfaces, i);
+ i->sw_if_index = sw_if_index;
+ i->flags = 0;
+ nat_validate_interface_counters (nm, sw_if_index);
- 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)];
+ vnet_feature_enable_disable ("ip4-unicast", feature_name, sw_if_index, 1, 0,
+ 0);
- return next_worker_index;
-}
+ int rv = ip4_sv_reass_enable_disable_with_refcnt (sw_if_index, 1);
+ if (rv)
+ return rv;
-u32
-nat44_ei_get_out2in_worker_index (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;
- u16 port;
- clib_bihash_kv_8_8_t kv, value;
- snat_static_mapping_t *m;
- u32 proto;
- u32 next_worker_index = 0;
+ if (is_inside && !nm->out2in_dpo)
+ {
+ vnet_feature_enable_disable ("ip4-local", "nat44-ei-hairpinning",
+ sw_if_index, 1, 0, 0);
+ }
- /* first try static mappings without port */
- if (PREDICT_FALSE (pool_elts (sm->static_mappings)))
+set_flags:
+ if (is_inside)
{
- init_nat_k (&kv, ip0->dst_address, 0, rx_fib_index0, 0);
- if (!clib_bihash_search_8_8 (&sm->static_mapping_by_external, &kv,
- &value))
- {
- m = pool_elt_at_index (sm->static_mappings, value.value);
- return m->workers[0];
- }
+ i->flags |= NAT44_EI_INTERFACE_FLAG_IS_INSIDE;
+ return 0;
}
+ else
+ i->flags |= NAT44_EI_INTERFACE_FLAG_IS_OUTSIDE;
- proto = ip_proto_to_nat_proto (ip0->protocol);
- udp = ip4_next_header (ip0);
- port = udp->dst_port;
+ /* Add/delete external addresses to FIB */
+fib:
+ vec_foreach (ap, nm->addresses)
+ nat44_ei_add_del_addr_to_fib (&ap->addr, 32, sw_if_index, !is_del);
- /* unknown protocol */
- if (PREDICT_FALSE (proto == NAT_PROTOCOL_OTHER))
+ pool_foreach (m, nm->static_mappings)
+ {
+ if (!(nat44_ei_is_addr_only_static_mapping (m)) ||
+ (m->local_addr.as_u32 == m->external_addr.as_u32))
+ continue;
+
+ nat44_ei_add_del_addr_to_fib (&m->external_addr, 32, sw_if_index,
+ !is_del);
+ }
+
+ return 0;
+}
+
+int
+nat44_ei_interface_add_del_output_feature (u32 sw_if_index, u8 is_inside,
+ int is_del)
+{
+ nat44_ei_main_t *nm = &nat44_ei_main;
+ nat44_ei_interface_t *i;
+ nat44_ei_address_t *ap;
+ nat44_ei_static_mapping_t *m;
+ nat44_ei_outside_fib_t *outside_fib;
+ u32 fib_index =
+ fib_table_get_index_for_sw_if_index (FIB_PROTOCOL_IP4, sw_if_index);
+
+ fail_if_disabled ();
+
+ if (nm->static_mapping_only && !(nm->static_mapping_connection_tracking))
+ {
+ nat44_ei_log_err ("error unsupported");
+ return VNET_API_ERROR_UNSUPPORTED;
+ }
+
+ pool_foreach (i, nm->interfaces)
+ {
+ if (i->sw_if_index == sw_if_index)
+ {
+ nat44_ei_log_err ("error interface already configured");
+ return VNET_API_ERROR_VALUE_EXIST;
+ }
+ }
+
+ if (!is_inside)
+ {
+ vec_foreach (outside_fib, nm->outside_fibs)
+ {
+ if (outside_fib->fib_index == fib_index)
+ {
+ if (is_del)
+ {
+ outside_fib->refcount--;
+ if (!outside_fib->refcount)
+ vec_del1 (nm->outside_fibs,
+ outside_fib - nm->outside_fibs);
+ }
+ else
+ outside_fib->refcount++;
+ goto feature_set;
+ }
+ }
+ if (!is_del)
+ {
+ vec_add2 (nm->outside_fibs, outside_fib, 1);
+ outside_fib->refcount = 1;
+ outside_fib->fib_index = fib_index;
+ }
+ }
+
+feature_set:
+ if (is_inside)
+ {
+ 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-ei-hairpin-dst",
+ sw_if_index, !is_del, 0, 0);
+ vnet_feature_enable_disable ("ip4-output", "nat44-ei-hairpin-src",
+ sw_if_index, !is_del, 0, 0);
+ goto fq;
+ }
+
+ if (nm->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-ei-out2in-worker-handoff",
+ sw_if_index, !is_del, 0, 0);
+ vnet_feature_enable_disable ("ip4-output",
+ "nat44-ei-in2out-output-worker-handoff",
+ 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-ei-out2in",
+ sw_if_index, !is_del, 0, 0);
+ vnet_feature_enable_disable ("ip4-output", "nat44-ei-in2out-output",
+ sw_if_index, !is_del, 0, 0);
+ }
+
+fq:
+ if (nm->fq_in2out_output_index == ~0 && nm->num_workers > 1)
+ nm->fq_in2out_output_index =
+ vlib_frame_queue_main_init (nm->in2out_output_node_index, 0);
+
+ if (nm->fq_out2in_index == ~0 && nm->num_workers > 1)
+ nm->fq_out2in_index =
+ vlib_frame_queue_main_init (nm->out2in_node_index, 0);
+
+ pool_foreach (i, nm->output_feature_interfaces)
+ {
+ if (i->sw_if_index == sw_if_index)
+ {
+ if (is_del)
+ pool_put (nm->output_feature_interfaces, i);
+ else
+ return VNET_API_ERROR_VALUE_EXIST;
+
+ goto fib;
+ }
+ }
+
+ if (is_del)
+ {
+ nat44_ei_log_err ("error interface couldn't be found");
+ return VNET_API_ERROR_NO_SUCH_ENTRY;
+ }
+
+ pool_get (nm->output_feature_interfaces, i);
+ i->sw_if_index = sw_if_index;
+ i->flags = 0;
+ nat_validate_interface_counters (nm, sw_if_index);
+ if (is_inside)
+ i->flags |= NAT44_EI_INTERFACE_FLAG_IS_INSIDE;
+ else
+ i->flags |= NAT44_EI_INTERFACE_FLAG_IS_OUTSIDE;
+
+ /* Add/delete external addresses to FIB */
+fib:
+ if (is_inside)
+ return 0;
+
+ vec_foreach (ap, nm->addresses)
+ nat44_ei_add_del_addr_to_fib (&ap->addr, 32, sw_if_index, !is_del);
+
+ pool_foreach (m, nm->static_mappings)
+ {
+ if (!((nat44_ei_is_addr_only_static_mapping (m))) ||
+ (m->local_addr.as_u32 == m->external_addr.as_u32))
+ continue;
+
+ nat44_ei_add_del_addr_to_fib (&m->external_addr, 32, sw_if_index,
+ !is_del);
+ }
+
+ return 0;
+}
+
+int
+nat44_ei_plugin_disable ()
+{
+ nat44_ei_main_t *nm = &nat44_ei_main;
+ nat44_ei_interface_t *i, *vec;
+ int error = 0;
+
+ // first unregister all nodes from interfaces
+ vec = vec_dup (nm->interfaces);
+ vec_foreach (i, vec)
+ {
+ if (nat44_ei_interface_is_inside (i))
+ error = nat44_ei_interface_add_del (i->sw_if_index, 1, 1);
+ if (nat44_ei_interface_is_outside (i))
+ error = nat44_ei_interface_add_del (i->sw_if_index, 0, 1);
+
+ if (error)
+ {
+ nat44_ei_log_err ("error occurred while removing interface %u",
+ i->sw_if_index);
+ }
+ }
+ vec_free (vec);
+ nm->interfaces = 0;
+
+ vec = vec_dup (nm->output_feature_interfaces);
+ vec_foreach (i, vec)
+ {
+ if (nat44_ei_interface_is_inside (i))
+ error =
+ nat44_ei_interface_add_del_output_feature (i->sw_if_index, 1, 1);
+ if (nat44_ei_interface_is_outside (i))
+ error =
+ nat44_ei_interface_add_del_output_feature (i->sw_if_index, 0, 1);
+
+ if (error)
+ {
+ nat44_ei_log_err ("error occurred while removing interface %u",
+ i->sw_if_index);
+ }
+ }
+ vec_free (vec);
+ nm->output_feature_interfaces = 0;
+
+ nat_ha_disable ();
+ nat44_ei_db_free ();
+
+ nat44_ei_addresses_free (&nm->addresses);
+
+ vec_free (nm->to_resolve);
+ vec_free (nm->auto_add_sw_if_indices);
+
+ nm->to_resolve = 0;
+ nm->auto_add_sw_if_indices = 0;
+
+ nm->forwarding_enabled = 0;
+
+ nm->enabled = 0;
+ clib_memset (&nm->rconfig, 0, sizeof (nm->rconfig));
+
+ return error;
+}
+
+int
+nat44_ei_set_outside_address_and_port (nat44_ei_address_t *addresses,
+ u32 thread_index, ip4_address_t addr,
+ u16 port, nat_protocol_t protocol)
+{
+ nat44_ei_main_t *nm = &nat44_ei_main;
+ nat44_ei_address_t *a = 0;
+ u32 address_index;
+ u16 port_host_byte_order = clib_net_to_host_u16 (port);
+
+ for (address_index = 0; address_index < vec_len (addresses); address_index++)
+ {
+ if (addresses[address_index].addr.as_u32 != addr.as_u32)
+ continue;
+
+ a = addresses + address_index;
+ switch (protocol)
+ {
+#define _(N, j, n, s) \
+ case NAT_PROTOCOL_##N: \
+ if (a->busy_##n##_port_refcounts[port_host_byte_order]) \
+ return VNET_API_ERROR_INSTANCE_IN_USE; \
+ ++a->busy_##n##_port_refcounts[port_host_byte_order]; \
+ a->busy_##n##_ports_per_thread[thread_index]++; \
+ a->busy_##n##_ports++; \
+ return 0;
+ foreach_nat_protocol
+#undef _
+ default : nat_elog_info (nm, "unknown protocol");
+ return 1;
+ }
+ }
+
+ return VNET_API_ERROR_NO_SUCH_ENTRY;
+}
+
+void
+nat44_ei_add_del_address_dpo (ip4_address_t addr, u8 is_add)
+{
+ nat44_ei_main_t *nm = &nat44_ei_main;
+ dpo_id_t dpo_v4 = DPO_INVALID;
+ fib_prefix_t pfx = {
+ .fp_proto = FIB_PROTOCOL_IP4,
+ .fp_len = 32,
+ .fp_addr.ip4.as_u32 = addr.as_u32,
+ };
+
+ if (is_add)
+ {
+ nat_dpo_create (DPO_PROTO_IP4, 0, &dpo_v4);
+ fib_table_entry_special_dpo_add (0, &pfx, nm->fib_src_hi,
+ FIB_ENTRY_FLAG_EXCLUSIVE, &dpo_v4);
+ dpo_reset (&dpo_v4);
+ }
+ else
+ {
+ fib_table_entry_special_remove (0, &pfx, nm->fib_src_hi);
+ }
+}
+
+void
+nat44_ei_free_outside_address_and_port (nat44_ei_address_t *addresses,
+ u32 thread_index, ip4_address_t *addr,
+ u16 port, nat_protocol_t protocol)
+{
+ nat44_ei_main_t *nm = &nat44_ei_main;
+ nat44_ei_address_t *a;
+ u32 address_index;
+ u16 port_host_byte_order = clib_net_to_host_u16 (port);
+
+ for (address_index = 0; address_index < vec_len (addresses); address_index++)
+ {
+ if (addresses[address_index].addr.as_u32 == addr->as_u32)
+ break;
+ }
+
+ ASSERT (address_index < vec_len (addresses));
+
+ a = addresses + address_index;
+
+ switch (protocol)
+ {
+#define _(N, i, n, s) \
+ case NAT_PROTOCOL_##N: \
+ ASSERT (a->busy_##n##_port_refcounts[port_host_byte_order] >= 1); \
+ --a->busy_##n##_port_refcounts[port_host_byte_order]; \
+ a->busy_##n##_ports--; \
+ a->busy_##n##_ports_per_thread[thread_index]--; \
+ break;
+ foreach_nat_protocol
+#undef _
+ default : nat_elog_info (nm, "unknown protocol");
+ return;
+ }
+}
+
+void
+nat44_ei_free_session_data_v2 (nat44_ei_main_t *nm, nat44_ei_session_t *s,
+ u32 thread_index, u8 is_ha)
+{
+ clib_bihash_kv_8_8_t kv;
+
+ /* session lookup tables */
+ init_nat_i2o_k (&kv, s);
+ if (clib_bihash_add_del_8_8 (&nm->in2out, &kv, 0))
+ nat_elog_warn (nm, "in2out key del failed");
+ init_nat_o2i_k (&kv, s);
+ if (clib_bihash_add_del_8_8 (&nm->out2in, &kv, 0))
+ nat_elog_warn (nm, "out2in key del failed");
+
+ if (!is_ha)
+ nat_syslog_nat44_apmdel (s->user_index, s->in2out.fib_index,
+ &s->in2out.addr, s->in2out.port, &s->out2in.addr,
+ s->out2in.port, s->nat_proto);
+
+ if (nat44_ei_is_unk_proto_session (s))
+ return;
+
+ if (!is_ha)
+ {
+ /* log NAT event */
+ nat_ipfix_logging_nat44_ses_delete (
+ thread_index, s->in2out.addr.as_u32, s->out2in.addr.as_u32,
+ s->nat_proto, 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->nat_proto, s->out2in.fib_index,
+ thread_index);
+ }
+
+ if (nat44_ei_is_session_static (s))
+ return;
+
+ nat44_ei_free_outside_address_and_port (nm->addresses, thread_index,
+ &s->out2in.addr, s->out2in.port,
+ s->nat_proto);
+}
+
+nat44_ei_user_t *
+nat44_ei_user_get_or_create (nat44_ei_main_t *nm, ip4_address_t *addr,
+ u32 fib_index, u32 thread_index)
+{
+ nat44_ei_user_t *u = 0;
+ nat44_ei_user_key_t user_key;
+ clib_bihash_kv_8_8_t kv, value;
+ nat44_ei_main_per_thread_data_t *tnm = &nm->per_thread_data[thread_index];
+ dlist_elt_t *per_user_list_head_elt;
+
+ user_key.addr.as_u32 = addr->as_u32;
+ user_key.fib_index = fib_index;
+ kv.key = user_key.as_u64;
+
+ /* Ever heard of the "user" = src ip4 address before? */
+ if (clib_bihash_search_8_8 (&tnm->user_hash, &kv, &value))
+ {
+ if (pool_elts (tnm->users) >= nm->max_users_per_thread)
+ {
+ vlib_increment_simple_counter (&nm->user_limit_reached, thread_index,
+ 0, 1);
+ nat_elog_warn (nm, "maximum user limit reached");
+ return NULL;
+ }
+ /* no, make a new one */
+ pool_get (tnm->users, u);
+ clib_memset (u, 0, sizeof (*u));
+
+ u->addr.as_u32 = addr->as_u32;
+ u->fib_index = fib_index;
+
+ pool_get (tnm->list_pool, per_user_list_head_elt);
+
+ u->sessions_per_user_list_head_index =
+ per_user_list_head_elt - tnm->list_pool;
+
+ clib_dlist_init (tnm->list_pool, u->sessions_per_user_list_head_index);
+
+ kv.value = u - tnm->users;
+
+ /* add user */
+ if (clib_bihash_add_del_8_8 (&tnm->user_hash, &kv, 1))
+ {
+ nat_elog_warn (nm, "user_hash key add failed");
+ nat44_ei_delete_user_with_no_session (nm, u, thread_index);
+ return NULL;
+ }
+
+ vlib_set_simple_counter (&nm->total_users, thread_index, 0,
+ pool_elts (tnm->users));
+ }
+ else
+ {
+ u = pool_elt_at_index (tnm->users, value.value);
+ }
+
+ return u;
+}
+
+nat44_ei_session_t *
+nat44_ei_session_alloc_or_recycle (nat44_ei_main_t *nm, nat44_ei_user_t *u,
+ u32 thread_index, f64 now)
+{
+ nat44_ei_session_t *s;
+ nat44_ei_main_per_thread_data_t *tnm = &nm->per_thread_data[thread_index];
+ u32 oldest_per_user_translation_list_index, session_index;
+ dlist_elt_t *oldest_per_user_translation_list_elt;
+ dlist_elt_t *per_user_translation_list_elt;
+
+ /* Over quota? Recycle the least recently used translation */
+ if ((u->nsessions + u->nstaticsessions) >= nm->max_translations_per_user)
+ {
+ oldest_per_user_translation_list_index = clib_dlist_remove_head (
+ tnm->list_pool, u->sessions_per_user_list_head_index);
+
+ ASSERT (oldest_per_user_translation_list_index != ~0);
+
+ /* Add it back to the end of the LRU list */
+ clib_dlist_addtail (tnm->list_pool, u->sessions_per_user_list_head_index,
+ oldest_per_user_translation_list_index);
+ /* Get the list element */
+ oldest_per_user_translation_list_elt = pool_elt_at_index (
+ tnm->list_pool, oldest_per_user_translation_list_index);
+
+ /* Get the session index from the list element */
+ session_index = oldest_per_user_translation_list_elt->value;
+
+ /* Get the session */
+ s = pool_elt_at_index (tnm->sessions, session_index);
+
+ nat44_ei_free_session_data_v2 (nm, s, thread_index, 0);
+ if (nat44_ei_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;
+ }
+ else
+ {
+ pool_get (tnm->sessions, s);
+ clib_memset (s, 0, sizeof (*s));
+
+ /* Create list elts */
+ pool_get (tnm->list_pool, per_user_translation_list_elt);
+ clib_dlist_init (tnm->list_pool,
+ per_user_translation_list_elt - tnm->list_pool);
+
+ per_user_translation_list_elt->value = s - tnm->sessions;
+ s->per_user_index = per_user_translation_list_elt - tnm->list_pool;
+ s->per_user_list_head_index = u->sessions_per_user_list_head_index;
+
+ clib_dlist_addtail (tnm->list_pool, s->per_user_list_head_index,
+ per_user_translation_list_elt - tnm->list_pool);
+
+ s->user_index = u - tnm->users;
+ vlib_set_simple_counter (&nm->total_sessions, thread_index, 0,
+ pool_elts (tnm->sessions));
+ }
+
+ s->ha_last_refreshed = now;
+
+ return s;
+}
+
+void
+nat44_ei_free_session_data (nat44_ei_main_t *nm, nat44_ei_session_t *s,
+ u32 thread_index, u8 is_ha)
+{
+ clib_bihash_kv_8_8_t kv;
+
+ init_nat_i2o_k (&kv, s);
+ if (clib_bihash_add_del_8_8 (&nm->in2out, &kv, 0))
+ nat_elog_warn (nm, "in2out key del failed");
+
+ init_nat_o2i_k (&kv, s);
+ if (clib_bihash_add_del_8_8 (&nm->out2in, &kv, 0))
+ nat_elog_warn (nm, "out2in key del failed");
+
+ if (!is_ha)
+ {
+ nat_syslog_nat44_apmdel (s->user_index, s->in2out.fib_index,
+ &s->in2out.addr, s->in2out.port,
+ &s->out2in.addr, s->out2in.port, s->nat_proto);
+
+ nat_ipfix_logging_nat44_ses_delete (
+ thread_index, s->in2out.addr.as_u32, s->out2in.addr.as_u32,
+ s->nat_proto, 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->nat_proto, s->out2in.fib_index,
+ thread_index);
+ }
+
+ if (nat44_ei_is_session_static (s))
+ return;
+
+ nat44_ei_free_outside_address_and_port (nm->addresses, thread_index,
+ &s->out2in.addr, s->out2in.port,
+ s->nat_proto);
+}
+
+static_always_inline void
+nat44_ei_user_del_sessions (nat44_ei_user_t *u, u32 thread_index)
+{
+ dlist_elt_t *elt;
+ nat44_ei_session_t *s;
+
+ nat44_ei_main_t *nm = &nat44_ei_main;
+ nat44_ei_main_per_thread_data_t *tnm = &nm->per_thread_data[thread_index];
+
+ // get head
+ elt =
+ pool_elt_at_index (tnm->list_pool, u->sessions_per_user_list_head_index);
+ // get first element
+ elt = pool_elt_at_index (tnm->list_pool, elt->next);
+
+ while (elt->value != ~0)
+ {
+ s = pool_elt_at_index (tnm->sessions, elt->value);
+ elt = pool_elt_at_index (tnm->list_pool, elt->next);
+
+ nat44_ei_free_session_data (nm, s, thread_index, 0);
+ nat44_ei_delete_session (nm, s, thread_index);
+ }
+}
+
+int
+nat44_ei_user_del (ip4_address_t *addr, u32 fib_index)
+{
+ int rv = 1;
+
+ nat44_ei_main_t *nm = &nat44_ei_main;
+ nat44_ei_main_per_thread_data_t *tnm;
+
+ nat44_ei_user_key_t user_key;
+ clib_bihash_kv_8_8_t kv, value;
+
+ user_key.addr.as_u32 = addr->as_u32;
+ user_key.fib_index = fib_index;
+ kv.key = user_key.as_u64;
+
+ if (nm->num_workers > 1)
+ {
+ vec_foreach (tnm, nm->per_thread_data)
+ {
+ if (!clib_bihash_search_8_8 (&tnm->user_hash, &kv, &value))
+ {
+ nat44_ei_user_del_sessions (
+ pool_elt_at_index (tnm->users, value.value),
+ tnm->thread_index);
+ rv = 0;
+ break;
+ }
+ }
+ }
+ else
+ {
+ tnm = vec_elt_at_index (nm->per_thread_data, nm->num_workers);
+ if (!clib_bihash_search_8_8 (&tnm->user_hash, &kv, &value))
+ {
+ nat44_ei_user_del_sessions (
+ pool_elt_at_index (tnm->users, value.value), tnm->thread_index);
+ rv = 0;
+ }
+ }
+ return rv;
+}
+
+void
+nat44_ei_static_mapping_del_sessions (nat44_ei_main_t *nm,
+ nat44_ei_main_per_thread_data_t *tnm,
+ nat44_ei_user_key_t u_key, int addr_only,
+ ip4_address_t e_addr, u16 e_port)
+{
+ clib_bihash_kv_8_8_t kv, value;
+ kv.key = u_key.as_u64;
+ u64 user_index;
+ dlist_elt_t *head, *elt;
+ nat44_ei_user_t *u;
+ nat44_ei_session_t *s;
+ u32 elt_index, head_index, ses_index;
+
+ if (!clib_bihash_search_8_8 (&tnm->user_hash, &kv, &value))
+ {
+ user_index = value.value;
+ u = pool_elt_at_index (tnm->users, user_index);
+ if (u->nstaticsessions)
+ {
+ head_index = u->sessions_per_user_list_head_index;
+ head = pool_elt_at_index (tnm->list_pool, head_index);
+ elt_index = head->next;
+ elt = pool_elt_at_index (tnm->list_pool, elt_index);
+ ses_index = elt->value;
+ while (ses_index != ~0)
+ {
+ s = pool_elt_at_index (tnm->sessions, ses_index);
+ elt = pool_elt_at_index (tnm->list_pool, elt->next);
+ ses_index = elt->value;
+
+ if (!addr_only)
+ {
+ if ((s->out2in.addr.as_u32 != e_addr.as_u32) ||
+ (s->out2in.port != e_port))
+ continue;
+ }
+
+ if (!nat44_ei_is_session_static (s))
+ continue;
+
+ nat44_ei_free_session_data_v2 (nm, s, tnm - nm->per_thread_data,
+ 0);
+ nat44_ei_delete_session (nm, s, tnm - nm->per_thread_data);
+
+ if (!addr_only)
+ break;
+ }
+ }
+ }
+}
+
+u32
+nat44_ei_get_in2out_worker_index (ip4_header_t *ip0, u32 rx_fib_index0,
+ u8 is_output)
+{
+ nat44_ei_main_t *nm = &nat44_ei_main;
+ u32 next_worker_index = 0;
+ u32 hash;
+
+ next_worker_index = nm->first_worker_index;
+ hash = ip0->src_address.as_u32 + (ip0->src_address.as_u32 >> 8) +
+ (ip0->src_address.as_u32 >> 16) + (ip0->src_address.as_u32 >> 24);
+
+ if (PREDICT_TRUE (is_pow2 (_vec_len (nm->workers))))
+ next_worker_index += nm->workers[hash & (_vec_len (nm->workers) - 1)];
+ else
+ next_worker_index += nm->workers[hash % _vec_len (nm->workers)];
+
+ return next_worker_index;
+}
+
+u32
+nat44_ei_get_out2in_worker_index (vlib_buffer_t *b, ip4_header_t *ip0,
+ u32 rx_fib_index0, u8 is_output)
+{
+ nat44_ei_main_t *nm = &nat44_ei_main;
+ udp_header_t *udp;
+ u16 port;
+ clib_bihash_kv_8_8_t kv, value;
+ nat44_ei_static_mapping_t *m;
+ u32 proto;
+ u32 next_worker_index = 0;
+
+ /* first try static mappings without port */
+ if (PREDICT_FALSE (pool_elts (nm->static_mappings)))
+ {
+ init_nat_k (&kv, ip0->dst_address, 0, rx_fib_index0, 0);
+ if (!clib_bihash_search_8_8 (&nm->static_mapping_by_external, &kv,
+ &value))
+ {
+ m = pool_elt_at_index (nm->static_mappings, value.value);
+ return m->workers[0];
+ }
+ }
+
+ proto = ip_proto_to_nat_proto (ip0->protocol);
+ udp = ip4_next_header (ip0);
+ port = udp->dst_port;
+
+ /* unknown protocol */
+ if (PREDICT_FALSE (proto == NAT_PROTOCOL_OTHER))
{
/* use current thread */
return vlib_get_thread_index ();
}
/* try static mappings with port */
- if (PREDICT_FALSE (pool_elts (sm->static_mappings)))
+ if (PREDICT_FALSE (pool_elts (nm->static_mappings)))
{
init_nat_k (&kv, ip0->dst_address, port, rx_fib_index0, proto);
- if (!clib_bihash_search_8_8 (&sm->static_mapping_by_external, &kv,
+ if (!clib_bihash_search_8_8 (&nm->static_mapping_by_external, &kv,
&value))
{
- m = pool_elt_at_index (sm->static_mappings, value.value);
+ m = pool_elt_at_index (nm->static_mappings, value.value);
return m->workers[0];
}
}
/* worker by outside port */
- next_worker_index = sm->first_worker_index;
+ next_worker_index = nm->first_worker_index;
next_worker_index +=
- sm->workers[(clib_net_to_host_u16 (port) - 1024) / sm->port_per_thread];
+ nm->workers[(clib_net_to_host_u16 (port) - 1024) / nm->port_per_thread];
return next_worker_index;
}
static int
-nat44_ei_alloc_default_cb (snat_address_t *addresses, u32 fib_index,
+nat44_ei_alloc_default_cb (nat44_ei_address_t *addresses, u32 fib_index,
u32 thread_index, nat_protocol_t proto,
ip4_address_t *addr, u16 *port, u16 port_per_thread,
u32 snat_thread_index)
{
- int i;
- snat_address_t *a, *ga = 0;
+ nat44_ei_main_t *nm = &nat44_ei_main;
+ nat44_ei_address_t *a, *ga = 0;
u32 portnum;
+ int i;
for (i = 0; i < vec_len (addresses); i++)
{
while (1) \
{ \
portnum = (port_per_thread * snat_thread_index) + \
- snat_random_port (0, port_per_thread - 1) + 1024; \
+ nat_random_port (&nm->random_seed, 0, \
+ port_per_thread - 1) + \
+ 1024; \
if (a->busy_##n##_port_refcounts[portnum]) \
continue; \
--a->busy_##n##_port_refcounts[portnum]; \
break;
foreach_nat_protocol
#undef _
- default : nat_elog_info ("unknown protocol");
+ default : nat_elog_info (nm, "unknown protocol");
return 1;
}
}
case NAT_PROTOCOL_##N: \
while (1) \
{ \
- portnum = (port_per_thread * snat_thread_index) + \
- snat_random_port (0, port_per_thread - 1) + 1024; \
+ portnum = \
+ (port_per_thread * snat_thread_index) + \
+ nat_random_port (&nm->random_seed, 0, port_per_thread - 1) + 1024; \
if (a->busy_##n##_port_refcounts[portnum]) \
continue; \
++a->busy_##n##_port_refcounts[portnum]; \
break;
foreach_nat_protocol
#undef _
- default : nat_elog_info ("unknown protocol");
+ default : nat_elog_info (nm, "unknown protocol");
return 1;
}
}
}
static int
-nat44_ei_alloc_range_cb (snat_address_t *addresses, u32 fib_index,
+nat44_ei_alloc_range_cb (nat44_ei_address_t *addresses, u32 fib_index,
u32 thread_index, nat_protocol_t proto,
ip4_address_t *addr, u16 *port, u16 port_per_thread,
u32 snat_thread_index)
{
- snat_main_t *sm = &snat_main;
- snat_address_t *a = addresses;
+ nat44_ei_main_t *nm = &nat44_ei_main;
+ nat44_ei_address_t *a = addresses;
u16 portnum, ports;
- ports = sm->end_port - sm->start_port + 1;
+ ports = nm->end_port - nm->start_port + 1;
if (!vec_len (addresses))
goto exhausted;
{ \
while (1) \
{ \
- portnum = snat_random_port (sm->start_port, sm->end_port); \
+ portnum = nat_random_port (&nm->random_seed, nm->start_port, \
+ nm->end_port); \
if (a->busy_##n##_port_refcounts[portnum]) \
continue; \
++a->busy_##n##_port_refcounts[portnum]; \
break;
foreach_nat_protocol
#undef _
- default : nat_elog_info ("unknown protocol");
+ default : nat_elog_info (nm, "unknown protocol");
return 1;
}
}
static int
-nat44_ei_alloc_mape_cb (snat_address_t *addresses, u32 fib_index,
+nat44_ei_alloc_mape_cb (nat44_ei_address_t *addresses, u32 fib_index,
u32 thread_index, nat_protocol_t proto,
ip4_address_t *addr, u16 *port, u16 port_per_thread,
u32 snat_thread_index)
{
- snat_main_t *sm = &snat_main;
- snat_address_t *a = addresses;
+ nat44_ei_main_t *nm = &nat44_ei_main;
+ nat44_ei_address_t *a = addresses;
u16 m, ports, portnum, A, j;
- m = 16 - (sm->psid_offset + sm->psid_length);
- ports = (1 << (16 - sm->psid_length)) - (1 << m);
+ m = 16 - (nm->psid_offset + nm->psid_length);
+ ports = (1 << (16 - nm->psid_length)) - (1 << m);
if (!vec_len (addresses))
goto exhausted;
{ \
while (1) \
{ \
- A = snat_random_port (1, pow2_mask (sm->psid_offset)); \
- j = snat_random_port (0, pow2_mask (m)); \
- portnum = A | (sm->psid << sm->psid_offset) | (j << (16 - m)); \
+ A = nat_random_port (&nm->random_seed, 1, \
+ pow2_mask (nm->psid_offset)); \
+ j = nat_random_port (&nm->random_seed, 0, pow2_mask (m)); \
+ portnum = A | (nm->psid << nm->psid_offset) | (j << (16 - m)); \
if (a->busy_##n##_port_refcounts[portnum]) \
continue; \
++a->busy_##n##_port_refcounts[portnum]; \
break;
foreach_nat_protocol
#undef _
- default : nat_elog_info ("unknown protocol");
+ default : nat_elog_info (nm, "unknown protocol");
return 1;
}
void
nat44_ei_set_alloc_default ()
{
- snat_main_t *sm = &snat_main;
+ nat44_ei_main_t *nm = &nat44_ei_main;
- sm->addr_and_port_alloc_alg = NAT_ADDR_AND_PORT_ALLOC_ALG_DEFAULT;
- sm->alloc_addr_and_port = nat44_ei_alloc_default_cb;
+ nm->addr_and_port_alloc_alg = NAT44_EI_ADDR_AND_PORT_ALLOC_ALG_DEFAULT;
+ nm->alloc_addr_and_port = nat44_ei_alloc_default_cb;
}
void
nat44_ei_set_alloc_range (u16 start_port, u16 end_port)
{
- snat_main_t *sm = &snat_main;
+ nat44_ei_main_t *nm = &nat44_ei_main;
- sm->addr_and_port_alloc_alg = NAT_ADDR_AND_PORT_ALLOC_ALG_RANGE;
- sm->alloc_addr_and_port = nat44_ei_alloc_range_cb;
- sm->start_port = start_port;
- sm->end_port = end_port;
+ nm->addr_and_port_alloc_alg = NAT44_EI_ADDR_AND_PORT_ALLOC_ALG_RANGE;
+ nm->alloc_addr_and_port = nat44_ei_alloc_range_cb;
+ nm->start_port = start_port;
+ nm->end_port = end_port;
}
void
nat44_ei_set_alloc_mape (u16 psid, u16 psid_offset, u16 psid_length)
{
- snat_main_t *sm = &snat_main;
+ nat44_ei_main_t *nm = &nat44_ei_main;
- sm->addr_and_port_alloc_alg = NAT_ADDR_AND_PORT_ALLOC_ALG_MAPE;
- sm->alloc_addr_and_port = nat44_ei_alloc_mape_cb;
- sm->psid = psid;
- sm->psid_offset = psid_offset;
- sm->psid_length = psid_length;
+ nm->addr_and_port_alloc_alg = NAT44_EI_ADDR_AND_PORT_ALLOC_ALG_MAPE;
+ nm->alloc_addr_and_port = nat44_ei_alloc_mape_cb;
+ nm->psid = psid;
+ nm->psid_offset = psid_offset;
+ nm->psid_length = psid_length;
}
static void
int addr_only, int identity_nat,
u8 *tag)
{
- snat_main_t *sm = &snat_main;
- snat_static_map_resolve_t *rp;
+ nat44_ei_main_t *nm = &nat44_ei_main;
+ nat44_ei_static_map_resolve_t *rp;
- vec_add2 (sm->to_resolve, rp, 1);
+ vec_add2 (nm->to_resolve, rp, 1);
clib_memset (rp, 0, sizeof (*rp));
rp->l_addr.as_u32 = l_addr.as_u32;
rp->tag = vec_dup (tag);
}
+void
+nat44_ei_delete_session (nat44_ei_main_t *nm, nat44_ei_session_t *ses,
+ u32 thread_index)
+{
+ nat44_ei_main_per_thread_data_t *tnm =
+ vec_elt_at_index (nm->per_thread_data, thread_index);
+ clib_bihash_kv_8_8_t kv, value;
+ nat44_ei_user_t *u;
+ const nat44_ei_user_key_t u_key = { .addr = ses->in2out.addr,
+ .fib_index = ses->in2out.fib_index };
+ const u8 u_static = nat44_ei_is_session_static (ses);
+
+ clib_dlist_remove (tnm->list_pool, ses->per_user_index);
+ pool_put_index (tnm->list_pool, ses->per_user_index);
+
+ pool_put (tnm->sessions, ses);
+ vlib_set_simple_counter (&nm->total_sessions, thread_index, 0,
+ pool_elts (tnm->sessions));
+
+ kv.key = u_key.as_u64;
+ if (!clib_bihash_search_8_8 (&tnm->user_hash, &kv, &value))
+ {
+ u = pool_elt_at_index (tnm->users, value.value);
+ if (u_static)
+ u->nstaticsessions--;
+ else
+ u->nsessions--;
+
+ nat44_ei_delete_user_with_no_session (nm, u, thread_index);
+ }
+}
+
int
-nat44_ei_del_session (snat_main_t *sm, ip4_address_t *addr, u16 port,
+nat44_ei_del_session (nat44_ei_main_t *nm, ip4_address_t *addr, u16 port,
nat_protocol_t proto, u32 vrf_id, int is_in)
{
- snat_main_per_thread_data_t *tsm;
+ nat44_ei_main_per_thread_data_t *tnm;
clib_bihash_kv_8_8_t kv, value;
ip4_header_t ip;
u32 fib_index = fib_table_find (FIB_PROTOCOL_IP4, vrf_id);
- snat_session_t *s;
+ nat44_ei_session_t *s;
clib_bihash_8_8_t *t;
- if (sm->endpoint_dependent)
- return VNET_API_ERROR_UNSUPPORTED;
-
ip.dst_address.as_u32 = ip.src_address.as_u32 = addr->as_u32;
- if (sm->num_workers > 1)
- tsm = vec_elt_at_index (sm->per_thread_data,
- sm->worker_in2out_cb (&ip, fib_index, 0));
+ if (nm->num_workers > 1)
+ tnm = vec_elt_at_index (nm->per_thread_data,
+ nm->worker_in2out_cb (&ip, fib_index, 0));
else
- tsm = vec_elt_at_index (sm->per_thread_data, sm->num_workers);
+ tnm = vec_elt_at_index (nm->per_thread_data, nm->num_workers);
init_nat_k (&kv, *addr, port, fib_index, proto);
- t = is_in ? &sm->in2out : &sm->out2in;
+ t = is_in ? &nm->in2out : &nm->out2in;
if (!clib_bihash_search_8_8 (t, &kv, &value))
{
- if (pool_is_free_index (tsm->sessions, value.value))
+ if (pool_is_free_index (tnm->sessions, value.value))
return VNET_API_ERROR_UNSPECIFIED;
- s = pool_elt_at_index (tsm->sessions, value.value);
- nat_free_session_data (sm, s, tsm - sm->per_thread_data, 0);
- nat44_delete_session (sm, s, tsm - sm->per_thread_data);
+ s = pool_elt_at_index (tnm->sessions, value.value);
+ nat44_ei_free_session_data_v2 (nm, s, tnm - nm->per_thread_data, 0);
+ nat44_ei_delete_session (nm, s, tnm - nm->per_thread_data);
return 0;
}
return VNET_API_ERROR_NO_SUCH_ENTRY;
}
+u32
+nat44_ei_get_thread_idx_by_port (u16 e_port)
+{
+ nat44_ei_main_t *nm = &nat44_ei_main;
+ u32 thread_idx = nm->num_workers;
+ if (nm->num_workers > 1)
+ {
+ thread_idx = nm->first_worker_index +
+ nm->workers[(e_port - 1024) / nm->port_per_thread];
+ }
+ return thread_idx;
+}
+
+void
+nat44_ei_add_del_addr_to_fib (ip4_address_t *addr, u8 p_len, u32 sw_if_index,
+ int is_add)
+{
+ nat44_ei_main_t *nm = &nat44_ei_main;
+ fib_prefix_t prefix = {
+ .fp_len = p_len,
+ .fp_proto = FIB_PROTOCOL_IP4,
+ .fp_addr = {
+ .ip4.as_u32 = addr->as_u32,
+ },
+ };
+ u32 fib_index = ip4_fib_table_get_index_for_sw_if_index (sw_if_index);
+
+ if (is_add)
+ fib_table_entry_update_one_path (
+ fib_index, &prefix, nm->fib_src_low,
+ (FIB_ENTRY_FLAG_CONNECTED | FIB_ENTRY_FLAG_LOCAL |
+ FIB_ENTRY_FLAG_EXCLUSIVE),
+ DPO_PROTO_IP4, NULL, sw_if_index, ~0, 1, NULL, FIB_ROUTE_PATH_FLAG_NONE);
+ else
+ fib_table_entry_delete (fib_index, &prefix, nm->fib_src_low);
+}
+
int
nat44_ei_add_del_static_mapping (ip4_address_t l_addr, ip4_address_t e_addr,
u16 l_port, u16 e_port, nat_protocol_t proto,
u32 sw_if_index, u32 vrf_id, u8 addr_only,
u8 identity_nat, u8 *tag, u8 is_add)
{
- snat_main_t *sm = &snat_main;
- snat_static_mapping_t *m = 0;
+ nat44_ei_main_t *nm = &nat44_ei_main;
+ nat44_ei_static_mapping_t *m = 0;
clib_bihash_kv_8_8_t kv, value;
- snat_address_t *a = 0;
+ nat44_ei_address_t *a = 0;
u32 fib_index = ~0;
- snat_interface_t *interface;
- snat_main_per_thread_data_t *tsm;
- snat_user_key_t u_key;
- snat_user_t *u;
+ nat44_ei_interface_t *interface;
+ nat44_ei_main_per_thread_data_t *tnm;
+ nat44_ei_user_key_t u_key;
+ nat44_ei_user_t *u;
dlist_elt_t *head, *elt;
u32 elt_index, head_index;
u32 ses_index;
u64 user_index;
- snat_session_t *s;
- snat_static_map_resolve_t *rp, *rp_match = 0;
- nat44_lb_addr_port_t *local;
+ nat44_ei_session_t *s;
+ nat44_ei_static_map_resolve_t *rp, *rp_match = 0;
+ nat44_ei_lb_addr_port_t *local;
u32 find = ~0;
int i;
{
ip4_address_t *first_int_addr;
- for (i = 0; i < vec_len (sm->to_resolve); i++)
+ for (i = 0; i < vec_len (nm->to_resolve); i++)
{
- rp = sm->to_resolve + i;
+ rp = nm->to_resolve + i;
if (rp->sw_if_index != sw_if_index ||
rp->l_addr.as_u32 != l_addr.as_u32 || rp->vrf_id != vrf_id ||
rp->addr_only != addr_only)
/* Might be already set... */
first_int_addr = ip4_interface_first_address (
- sm->ip4_main, sw_if_index, 0 /* just want the address */);
+ nm->ip4_main, sw_if_index, 0 /* just want the address */);
if (is_add)
{
if (!rp_match)
return VNET_API_ERROR_NO_SUCH_ENTRY;
- vec_del1 (sm->to_resolve, i);
+ vec_del1 (nm->to_resolve, i);
if (!first_int_addr)
return 0;
}
init_nat_k (&kv, e_addr, addr_only ? 0 : e_port, 0, addr_only ? 0 : proto);
- if (!clib_bihash_search_8_8 (&sm->static_mapping_by_external, &kv, &value))
- m = pool_elt_at_index (sm->static_mappings, value.value);
+ if (!clib_bihash_search_8_8 (&nm->static_mapping_by_external, &kv, &value))
+ m = pool_elt_at_index (nm->static_mappings, value.value);
if (is_add)
{
if (m)
{
// identity mapping for second vrf
- if (is_identity_static_mapping (m))
+ if (nat44_ei_is_identity_static_mapping (m))
{
pool_foreach (local, m->locals)
{
pool_get (m->locals, local);
local->vrf_id = vrf_id;
local->fib_index = fib_table_find_or_create_and_lock (
- FIB_PROTOCOL_IP4, vrf_id, sm->fib_src_low);
+ FIB_PROTOCOL_IP4, vrf_id, nm->fib_src_low);
init_nat_kv (&kv, m->local_addr, m->local_port, local->fib_index,
- m->proto, 0, m - sm->static_mappings);
- clib_bihash_add_del_8_8 (&sm->static_mapping_by_local, &kv, 1);
+ m->proto, 0, m - nm->static_mappings);
+ clib_bihash_add_del_8_8 (&nm->static_mapping_by_local, &kv, 1);
return 0;
}
return VNET_API_ERROR_VALUE_EXIST;
if (vrf_id != ~0)
{
fib_index = fib_table_find_or_create_and_lock (
- FIB_PROTOCOL_IP4, vrf_id, sm->fib_src_low);
+ FIB_PROTOCOL_IP4, vrf_id, nm->fib_src_low);
}
/* If not specified use inside VRF id from NAT44 plugin config */
else
{
- fib_index = sm->inside_fib_index;
- vrf_id = sm->inside_vrf_id;
- fib_table_lock (fib_index, FIB_PROTOCOL_IP4, sm->fib_src_low);
+ fib_index = nm->inside_fib_index;
+ vrf_id = nm->inside_vrf_id;
+ fib_table_lock (fib_index, FIB_PROTOCOL_IP4, nm->fib_src_low);
}
if (!identity_nat)
{
init_nat_k (&kv, l_addr, addr_only ? 0 : l_port, fib_index,
addr_only ? 0 : proto);
- if (!clib_bihash_search_8_8 (&sm->static_mapping_by_local, &kv,
+ if (!clib_bihash_search_8_8 (&nm->static_mapping_by_local, &kv,
&value))
return VNET_API_ERROR_VALUE_EXIST;
}
/* Find external address in allocated addresses and reserve port for
address and port pair mapping when dynamic translations enabled */
- if (!(addr_only || sm->static_mapping_only))
+ if (!(addr_only || nm->static_mapping_only))
{
- for (i = 0; i < vec_len (sm->addresses); i++)
+ for (i = 0; i < vec_len (nm->addresses); i++)
{
- if (sm->addresses[i].addr.as_u32 == e_addr.as_u32)
+ if (nm->addresses[i].addr.as_u32 == e_addr.as_u32)
{
- a = sm->addresses + i;
+ a = nm->addresses + i;
/* External port must be unused */
switch (proto)
{
if (e_port > 1024) \
{ \
a->busy_##n##_ports++; \
- a->busy_##n##_ports_per_thread[get_thread_idx_by_port (e_port)]++; \
+ a->busy_##n##_ports_per_thread[nat44_ei_get_thread_idx_by_port ( \
+ e_port)]++; \
} \
break;
foreach_nat_protocol
#undef _
- default : nat_elog_info ("unknown protocol");
+ default : nat_elog_info (nm, "unknown protocol");
return VNET_API_ERROR_INVALID_VALUE_2;
}
break;
{
if (sw_if_index != ~0)
{
- for (i = 0; i < vec_len (sm->to_resolve); i++)
+ for (i = 0; i < vec_len (nm->to_resolve); i++)
{
- rp = sm->to_resolve + i;
+ rp = nm->to_resolve + i;
if (rp->addr_only)
continue;
if (rp->sw_if_index != sw_if_index &&
rp->e_port != e_port && rp->proto != proto)
continue;
- vec_del1 (sm->to_resolve, i);
+ vec_del1 (nm->to_resolve, i);
break;
}
}
}
}
- pool_get (sm->static_mappings, m);
+ pool_get (nm->static_mappings, m);
clib_memset (m, 0, sizeof (*m));
m->tag = vec_dup (tag);
m->local_addr = l_addr;
m->external_addr = e_addr;
if (addr_only)
- m->flags |= NAT_STATIC_MAPPING_FLAG_ADDR_ONLY;
+ m->flags |= NAT44_EI_STATIC_MAPPING_FLAG_ADDR_ONLY;
else
{
m->local_port = l_port;
if (identity_nat)
{
- m->flags |= NAT_STATIC_MAPPING_FLAG_IDENTITY_NAT;
+ m->flags |= NAT44_EI_STATIC_MAPPING_FLAG_IDENTITY_NAT;
pool_get (m->locals, local);
local->vrf_id = vrf_id;
local->fib_index = fib_index;
m->fib_index = fib_index;
}
- if (sm->num_workers > 1)
+ if (nm->num_workers > 1)
{
ip4_header_t ip = {
.src_address = m->local_addr,
};
- 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]);
+ vec_add1 (m->workers, nm->worker_in2out_cb (&ip, m->fib_index, 0));
+ tnm = vec_elt_at_index (nm->per_thread_data, m->workers[0]);
}
else
- tsm = vec_elt_at_index (sm->per_thread_data, sm->num_workers);
+ tnm = vec_elt_at_index (nm->per_thread_data, nm->num_workers);
init_nat_kv (&kv, m->local_addr, m->local_port, fib_index, m->proto, 0,
- m - sm->static_mappings);
- clib_bihash_add_del_8_8 (&sm->static_mapping_by_local, &kv, 1);
+ m - nm->static_mappings);
+ clib_bihash_add_del_8_8 (&nm->static_mapping_by_local, &kv, 1);
init_nat_kv (&kv, m->external_addr, m->external_port, 0, m->proto, 0,
- m - sm->static_mappings);
- clib_bihash_add_del_8_8 (&sm->static_mapping_by_external, &kv, 1);
+ m - nm->static_mappings);
+ clib_bihash_add_del_8_8 (&nm->static_mapping_by_external, &kv, 1);
/* Delete dynamic sessions matching local address (+ local port) */
// TODO: based on type of NAT EI/ED
- if (!(sm->static_mapping_only))
+ if (!(nm->static_mapping_only))
{
u_key.addr = m->local_addr;
u_key.fib_index = m->fib_index;
kv.key = u_key.as_u64;
- if (!clib_bihash_search_8_8 (&tsm->user_hash, &kv, &value))
+ if (!clib_bihash_search_8_8 (&tnm->user_hash, &kv, &value))
{
user_index = value.value;
- u = pool_elt_at_index (tsm->users, user_index);
+ u = pool_elt_at_index (tnm->users, user_index);
if (u->nsessions)
{
head_index = u->sessions_per_user_list_head_index;
- head = pool_elt_at_index (tsm->list_pool, head_index);
+ head = pool_elt_at_index (tnm->list_pool, head_index);
elt_index = head->next;
- elt = pool_elt_at_index (tsm->list_pool, elt_index);
+ elt = pool_elt_at_index (tnm->list_pool, elt_index);
ses_index = elt->value;
while (ses_index != ~0)
{
- s = pool_elt_at_index (tsm->sessions, ses_index);
- elt = pool_elt_at_index (tsm->list_pool, elt->next);
+ s = pool_elt_at_index (tnm->sessions, ses_index);
+ elt = pool_elt_at_index (tnm->list_pool, elt->next);
ses_index = elt->value;
- if (snat_is_session_static (s))
+ if (nat44_ei_is_session_static (s))
continue;
if (!addr_only && s->in2out.port != m->local_port)
continue;
- nat_free_session_data (sm, s, tsm - sm->per_thread_data,
- 0);
- nat44_delete_session (sm, s, tsm - sm->per_thread_data);
+ nat44_ei_free_session_data_v2 (
+ nm, s, tnm - nm->per_thread_data, 0);
+ nat44_ei_delete_session (nm, s,
+ tnm - nm->per_thread_data);
if (!addr_only)
break;
}
}
}
- else
+ else
+ {
+ if (!m)
+ {
+ if (sw_if_index != ~0)
+ return 0;
+ else
+ return VNET_API_ERROR_NO_SUCH_ENTRY;
+ }
+
+ if (identity_nat)
+ {
+ if (vrf_id == ~0)
+ vrf_id = nm->inside_vrf_id;
+
+ pool_foreach (local, m->locals)
+ {
+ if (local->vrf_id == vrf_id)
+ find = local - m->locals;
+ }
+ if (find == ~0)
+ return VNET_API_ERROR_NO_SUCH_ENTRY;
+
+ local = pool_elt_at_index (m->locals, find);
+ fib_index = local->fib_index;
+ pool_put (m->locals, local);
+ }
+ else
+ fib_index = m->fib_index;
+
+ /* Free external address port */
+ if (!(addr_only || nm->static_mapping_only))
+ {
+ for (i = 0; i < vec_len (nm->addresses); i++)
+ {
+ if (nm->addresses[i].addr.as_u32 == e_addr.as_u32)
+ {
+ a = nm->addresses + i;
+ switch (proto)
+ {
+#define _(N, j, n, s) \
+ case NAT_PROTOCOL_##N: \
+ --a->busy_##n##_port_refcounts[e_port]; \
+ if (e_port > 1024) \
+ { \
+ a->busy_##n##_ports--; \
+ a->busy_##n##_ports_per_thread[nat44_ei_get_thread_idx_by_port ( \
+ e_port)]--; \
+ } \
+ break;
+ foreach_nat_protocol
+#undef _
+ default : return VNET_API_ERROR_INVALID_VALUE_2;
+ }
+ break;
+ }
+ }
+ }
+
+ if (nm->num_workers > 1)
+ tnm = vec_elt_at_index (nm->per_thread_data, m->workers[0]);
+ else
+ tnm = vec_elt_at_index (nm->per_thread_data, nm->num_workers);
+
+ init_nat_k (&kv, m->local_addr, m->local_port, fib_index, m->proto);
+ clib_bihash_add_del_8_8 (&nm->static_mapping_by_local, &kv, 0);
+
+ /* Delete session(s) for static mapping if exist */
+ if (!(nm->static_mapping_only) ||
+ (nm->static_mapping_only && nm->static_mapping_connection_tracking))
+ {
+ u_key.addr = m->local_addr;
+ u_key.fib_index = fib_index;
+ kv.key = u_key.as_u64;
+ nat44_ei_static_mapping_del_sessions (nm, tnm, u_key, addr_only,
+ e_addr, e_port);
+ }
+
+ fib_table_unlock (fib_index, FIB_PROTOCOL_IP4, nm->fib_src_low);
+ if (pool_elts (m->locals))
+ return 0;
+
+ init_nat_k (&kv, m->external_addr, m->external_port, 0, m->proto);
+ clib_bihash_add_del_8_8 (&nm->static_mapping_by_external, &kv, 0);
+
+ vec_free (m->tag);
+ vec_free (m->workers);
+ /* Delete static mapping from pool */
+ pool_put (nm->static_mappings, m);
+ }
+
+ if (!addr_only || (l_addr.as_u32 == e_addr.as_u32))
+ return 0;
+
+ /* Add/delete external address to FIB */
+ pool_foreach (interface, nm->interfaces)
+ {
+ if (nat44_ei_interface_is_inside (interface) || nm->out2in_dpo)
+ continue;
+
+ nat44_ei_add_del_addr_to_fib (&e_addr, 32, interface->sw_if_index,
+ is_add);
+ break;
+ }
+ pool_foreach (interface, nm->output_feature_interfaces)
+ {
+ if (nat44_ei_interface_is_inside (interface) || nm->out2in_dpo)
+ continue;
+
+ nat44_ei_add_del_addr_to_fib (&e_addr, 32, interface->sw_if_index,
+ is_add);
+ break;
+ }
+ return 0;
+}
+
+int
+nat44_ei_static_mapping_match (ip4_address_t match_addr, u16 match_port,
+ u32 match_fib_index,
+ nat_protocol_t match_protocol,
+ ip4_address_t *mapping_addr, u16 *mapping_port,
+ u32 *mapping_fib_index, u8 by_external,
+ u8 *is_addr_only, u8 *is_identity_nat)
+{
+ nat44_ei_main_t *nm = &nat44_ei_main;
+ clib_bihash_kv_8_8_t kv, value;
+ nat44_ei_static_mapping_t *m;
+ u16 port;
+
+ if (by_external)
+ {
+ init_nat_k (&kv, match_addr, match_port, 0, match_protocol);
+ if (clib_bihash_search_8_8 (&nm->static_mapping_by_external, &kv,
+ &value))
+ {
+ /* Try address only mapping */
+ init_nat_k (&kv, match_addr, 0, 0, 0);
+ if (clib_bihash_search_8_8 (&nm->static_mapping_by_external, &kv,
+ &value))
+ return 1;
+ }
+ m = pool_elt_at_index (nm->static_mappings, value.value);
+
+ *mapping_fib_index = m->fib_index;
+ *mapping_addr = m->local_addr;
+ port = m->local_port;
+ }
+ else
+ {
+ init_nat_k (&kv, match_addr, match_port, match_fib_index,
+ match_protocol);
+ if (clib_bihash_search_8_8 (&nm->static_mapping_by_local, &kv, &value))
+ {
+ /* Try address only mapping */
+ init_nat_k (&kv, match_addr, 0, match_fib_index, 0);
+ if (clib_bihash_search_8_8 (&nm->static_mapping_by_local, &kv,
+ &value))
+ return 1;
+ }
+ m = pool_elt_at_index (nm->static_mappings, value.value);
+
+ *mapping_fib_index = nm->outside_fib_index;
+ *mapping_addr = m->external_addr;
+ port = m->external_port;
+ }
+
+ /* Address only mapping doesn't change port */
+ if (nat44_ei_is_addr_only_static_mapping (m))
+ *mapping_port = match_port;
+ else
+ *mapping_port = port;
+
+ if (PREDICT_FALSE (is_addr_only != 0))
+ *is_addr_only = nat44_ei_is_addr_only_static_mapping (m);
+
+ if (PREDICT_FALSE (is_identity_nat != 0))
+ *is_identity_nat = nat44_ei_is_identity_static_mapping (m);
+
+ return 0;
+}
+
+static void
+nat44_ei_worker_db_free (nat44_ei_main_per_thread_data_t *tnm)
+{
+ pool_free (tnm->list_pool);
+ pool_free (tnm->lru_pool);
+ pool_free (tnm->sessions);
+ pool_free (tnm->users);
+
+ clib_bihash_free_8_8 (&tnm->user_hash);
+}
+
+u8 *
+format_nat44_ei_key (u8 *s, va_list *args)
+{
+ u64 key = va_arg (*args, u64);
+
+ ip4_address_t addr;
+ u16 port;
+ nat_protocol_t protocol;
+ u32 fib_index;
+
+ split_nat_key (key, &addr, &port, &fib_index, &protocol);
+
+ s = format (s, "%U proto %U port %d fib %d", format_ip4_address, &addr,
+ format_nat_protocol, protocol, clib_net_to_host_u16 (port),
+ fib_index);
+ return s;
+}
+
+u8 *
+format_nat44_ei_user_kvp (u8 *s, va_list *args)
+{
+ clib_bihash_kv_8_8_t *v = va_arg (*args, clib_bihash_kv_8_8_t *);
+ nat44_ei_user_key_t k;
+
+ k.as_u64 = v->key;
+
+ s = format (s, "%U fib %d user-index %llu", format_ip4_address, &k.addr,
+ k.fib_index, v->value);
+
+ return s;
+}
+
+u8 *
+format_nat44_ei_session_kvp (u8 *s, va_list *args)
+{
+ clib_bihash_kv_8_8_t *v = va_arg (*args, clib_bihash_kv_8_8_t *);
+
+ s =
+ format (s, "%U session-index %llu", format_nat44_ei_key, v->key, v->value);
+
+ return s;
+}
+
+u8 *
+format_nat44_ei_static_mapping_kvp (u8 *s, va_list *args)
+{
+ clib_bihash_kv_8_8_t *v = va_arg (*args, clib_bihash_kv_8_8_t *);
+
+ s = format (s, "%U static-mapping-index %llu", format_nat44_ei_key, v->key,
+ v->value);
+
+ return s;
+}
+
+static void
+nat44_ei_worker_db_init (nat44_ei_main_per_thread_data_t *tnm,
+ u32 translations, u32 translation_buckets,
+ u32 user_buckets)
+{
+ dlist_elt_t *head;
+
+ pool_alloc (tnm->list_pool, translations);
+ pool_alloc (tnm->lru_pool, translations);
+ pool_alloc (tnm->sessions, translations);
+
+ clib_bihash_init_8_8 (&tnm->user_hash, "users", user_buckets, 0);
+
+ clib_bihash_set_kvp_format_fn_8_8 (&tnm->user_hash,
+ format_nat44_ei_user_kvp);
+
+ pool_get (tnm->lru_pool, head);
+ tnm->tcp_trans_lru_head_index = head - tnm->lru_pool;
+ clib_dlist_init (tnm->lru_pool, tnm->tcp_trans_lru_head_index);
+
+ pool_get (tnm->lru_pool, head);
+ tnm->tcp_estab_lru_head_index = head - tnm->lru_pool;
+ clib_dlist_init (tnm->lru_pool, tnm->tcp_estab_lru_head_index);
+
+ pool_get (tnm->lru_pool, head);
+ tnm->udp_lru_head_index = head - tnm->lru_pool;
+ clib_dlist_init (tnm->lru_pool, tnm->udp_lru_head_index);
+
+ pool_get (tnm->lru_pool, head);
+ tnm->icmp_lru_head_index = head - tnm->lru_pool;
+ clib_dlist_init (tnm->lru_pool, tnm->icmp_lru_head_index);
+
+ pool_get (tnm->lru_pool, head);
+ tnm->unk_proto_lru_head_index = head - tnm->lru_pool;
+ clib_dlist_init (tnm->lru_pool, tnm->unk_proto_lru_head_index);
+}
+
+static void
+nat44_ei_db_free ()
+{
+ nat44_ei_main_t *nm = &nat44_ei_main;
+ nat44_ei_main_per_thread_data_t *tnm;
+
+ pool_free (nm->static_mappings);
+ clib_bihash_free_8_8 (&nm->static_mapping_by_local);
+ clib_bihash_free_8_8 (&nm->static_mapping_by_external);
+
+ if (nm->pat)
+ {
+ clib_bihash_free_8_8 (&nm->in2out);
+ clib_bihash_free_8_8 (&nm->out2in);
+ vec_foreach (tnm, nm->per_thread_data)
+ {
+ nat44_ei_worker_db_free (tnm);
+ }
+ }
+}
+
+static void
+nat44_ei_db_init (u32 translations, u32 translation_buckets, u32 user_buckets)
+{
+ nat44_ei_main_t *nm = &nat44_ei_main;
+ nat44_ei_main_per_thread_data_t *tnm;
+
+ u32 static_mapping_buckets = 1024;
+ u32 static_mapping_memory_size = 64 << 20;
+
+ clib_bihash_init_8_8 (&nm->static_mapping_by_local,
+ "static_mapping_by_local", static_mapping_buckets,
+ static_mapping_memory_size);
+ clib_bihash_init_8_8 (&nm->static_mapping_by_external,
+ "static_mapping_by_external", static_mapping_buckets,
+ static_mapping_memory_size);
+ clib_bihash_set_kvp_format_fn_8_8 (&nm->static_mapping_by_local,
+ format_nat44_ei_static_mapping_kvp);
+ clib_bihash_set_kvp_format_fn_8_8 (&nm->static_mapping_by_external,
+ format_nat44_ei_static_mapping_kvp);
+
+ if (nm->pat)
+ {
+ clib_bihash_init_8_8 (&nm->in2out, "in2out", translation_buckets, 0);
+ clib_bihash_init_8_8 (&nm->out2in, "out2in", translation_buckets, 0);
+ clib_bihash_set_kvp_format_fn_8_8 (&nm->in2out,
+ format_nat44_ei_session_kvp);
+ clib_bihash_set_kvp_format_fn_8_8 (&nm->out2in,
+ format_nat44_ei_session_kvp);
+ vec_foreach (tnm, nm->per_thread_data)
+ {
+ nat44_ei_worker_db_init (tnm, translations, translation_buckets,
+ user_buckets);
+ }
+ }
+}
+
+void
+nat44_ei_sessions_clear ()
+{
+ nat44_ei_main_t *nm = &nat44_ei_main;
+ nat44_ei_main_per_thread_data_t *tnm;
+
+ if (nm->pat)
+ {
+ clib_bihash_free_8_8 (&nm->in2out);
+ clib_bihash_free_8_8 (&nm->out2in);
+ clib_bihash_init_8_8 (&nm->in2out, "in2out", nm->translation_buckets, 0);
+ clib_bihash_init_8_8 (&nm->out2in, "out2in", nm->translation_buckets, 0);
+ clib_bihash_set_kvp_format_fn_8_8 (&nm->in2out,
+ format_nat44_ei_session_kvp);
+ clib_bihash_set_kvp_format_fn_8_8 (&nm->out2in,
+ format_nat44_ei_session_kvp);
+ vec_foreach (tnm, nm->per_thread_data)
+ {
+ nat44_ei_worker_db_free (tnm);
+ nat44_ei_worker_db_init (tnm, nm->translations,
+ nm->translation_buckets, nm->user_buckets);
+ }
+ }
+
+ vlib_zero_simple_counter (&nm->total_users, 0);
+ vlib_zero_simple_counter (&nm->total_sessions, 0);
+ vlib_zero_simple_counter (&nm->user_limit_reached, 0);
+}
+
+static void
+nat44_ei_update_outside_fib (ip4_main_t *im, uword opaque, u32 sw_if_index,
+ u32 new_fib_index, u32 old_fib_index)
+{
+ nat44_ei_main_t *nm = &nat44_ei_main;
+ nat44_ei_outside_fib_t *outside_fib;
+ nat44_ei_interface_t *i;
+ u8 is_add = 1;
+ u8 match = 0;
+
+ if (!nm->enabled || (new_fib_index == old_fib_index) ||
+ (!vec_len (nm->outside_fibs)))
+ {
+ return;
+ }
+
+ pool_foreach (i, nm->interfaces)
{
- if (!m)
+ if (i->sw_if_index == sw_if_index)
{
- if (sw_if_index != ~0)
- return 0;
- else
- return VNET_API_ERROR_NO_SUCH_ENTRY;
+ if (!(nat44_ei_interface_is_outside (i)))
+ return;
+ match = 1;
}
+ }
- if (identity_nat)
+ pool_foreach (i, nm->output_feature_interfaces)
+ {
+ if (i->sw_if_index == sw_if_index)
{
- if (vrf_id == ~0)
- vrf_id = sm->inside_vrf_id;
+ if (!(nat44_ei_interface_is_outside (i)))
+ return;
+ match = 1;
+ }
+ }
- pool_foreach (local, m->locals)
- {
- if (local->vrf_id == vrf_id)
- find = local - m->locals;
- }
- if (find == ~0)
- return VNET_API_ERROR_NO_SUCH_ENTRY;
+ if (!match)
+ return;
- local = pool_elt_at_index (m->locals, find);
- fib_index = local->fib_index;
- pool_put (m->locals, local);
+ vec_foreach (outside_fib, nm->outside_fibs)
+ {
+ if (outside_fib->fib_index == old_fib_index)
+ {
+ outside_fib->refcount--;
+ if (!outside_fib->refcount)
+ vec_del1 (nm->outside_fibs, outside_fib - nm->outside_fibs);
+ break;
}
- else
- fib_index = m->fib_index;
+ }
- /* Free external address port */
- if (!(addr_only || sm->static_mapping_only))
+ vec_foreach (outside_fib, nm->outside_fibs)
+ {
+ if (outside_fib->fib_index == new_fib_index)
{
- for (i = 0; i < vec_len (sm->addresses); i++)
- {
- if (sm->addresses[i].addr.as_u32 == e_addr.as_u32)
- {
- a = sm->addresses + i;
- switch (proto)
- {
-#define _(N, j, n, s) \
- case NAT_PROTOCOL_##N: \
- --a->busy_##n##_port_refcounts[e_port]; \
- if (e_port > 1024) \
- { \
- a->busy_##n##_ports--; \
- a->busy_##n##_ports_per_thread[get_thread_idx_by_port (e_port)]--; \
- } \
- break;
- foreach_nat_protocol
-#undef _
- default : return VNET_API_ERROR_INVALID_VALUE_2;
- }
- break;
- }
- }
+ outside_fib->refcount++;
+ is_add = 0;
+ break;
}
+ }
- if (sm->num_workers > 1)
- tsm = vec_elt_at_index (sm->per_thread_data, m->workers[0]);
- else
- tsm = vec_elt_at_index (sm->per_thread_data, sm->num_workers);
+ if (is_add)
+ {
+ vec_add2 (nm->outside_fibs, outside_fib, 1);
+ outside_fib->refcount = 1;
+ outside_fib->fib_index = new_fib_index;
+ }
+}
- init_nat_k (&kv, m->local_addr, m->local_port, fib_index, m->proto);
- clib_bihash_add_del_8_8 (&sm->static_mapping_by_local, &kv, 0);
+int
+nat44_ei_add_address (nat44_ei_main_t *nm, ip4_address_t *addr, u32 vrf_id)
+{
+ nat44_ei_address_t *ap;
+ nat44_ei_interface_t *i;
+ vlib_thread_main_t *tm = vlib_get_thread_main ();
- /* Delete session(s) for static mapping if exist */
- if (!(sm->static_mapping_only) ||
- (sm->static_mapping_only && sm->static_mapping_connection_tracking))
+ /* Check if address already exists */
+ vec_foreach (ap, nm->addresses)
+ {
+ if (ap->addr.as_u32 == addr->as_u32)
{
- u_key.addr = m->local_addr;
- u_key.fib_index = fib_index;
- kv.key = u_key.as_u64;
- nat44_ei_static_mapping_del_sessions (sm, tsm, u_key, addr_only,
- e_addr, e_port);
+ nat44_ei_log_err ("address exist");
+ return VNET_API_ERROR_VALUE_EXIST;
}
+ }
- fib_table_unlock (fib_index, FIB_PROTOCOL_IP4, sm->fib_src_low);
- if (pool_elts (m->locals))
- return 0;
+ vec_add2 (nm->addresses, ap, 1);
- init_nat_k (&kv, m->external_addr, m->external_port, 0, m->proto);
- clib_bihash_add_del_8_8 (&sm->static_mapping_by_external, &kv, 0);
+ ap->addr = *addr;
+ if (vrf_id != ~0)
+ ap->fib_index = fib_table_find_or_create_and_lock (
+ FIB_PROTOCOL_IP4, vrf_id, nm->fib_src_low);
+ else
+ ap->fib_index = ~0;
- vec_free (m->tag);
- vec_free (m->workers);
- /* Delete static mapping from pool */
- pool_put (sm->static_mappings, m);
- }
+#define _(N, i, n, s) \
+ clib_memset (ap->busy_##n##_port_refcounts, 0, \
+ sizeof (ap->busy_##n##_port_refcounts)); \
+ ap->busy_##n##_ports = 0; \
+ ap->busy_##n##_ports_per_thread = 0; \
+ vec_validate_init_empty (ap->busy_##n##_ports_per_thread, \
+ tm->n_vlib_mains - 1, 0);
+ foreach_nat_protocol
+#undef _
- if (!addr_only || (l_addr.as_u32 == e_addr.as_u32))
- return 0;
+ /* Add external address to FIB */
+ pool_foreach (i, nm->interfaces)
+ {
+ if (nat44_ei_interface_is_inside (i) || nm->out2in_dpo)
+ continue;
- /* Add/delete external address to FIB */
- pool_foreach (interface, sm->interfaces)
+ nat44_ei_add_del_addr_to_fib (addr, 32, i->sw_if_index, 1);
+ break;
+ }
+ pool_foreach (i, nm->output_feature_interfaces)
{
- if (nat_interface_is_inside (interface) || sm->out2in_dpo)
+ if (nat44_ei_interface_is_inside (i) || nm->out2in_dpo)
continue;
- snat_add_del_addr_to_fib (&e_addr, 32, interface->sw_if_index, is_add);
+ nat44_ei_add_del_addr_to_fib (addr, 32, i->sw_if_index, 1);
break;
}
- pool_foreach (interface, sm->output_feature_interfaces)
- {
- if (nat_interface_is_inside (interface) || sm->out2in_dpo)
- continue;
- snat_add_del_addr_to_fib (&e_addr, 32, interface->sw_if_index, is_add);
- break;
- }
return 0;
}
int
-nat44_ei_static_mapping_match (ip4_address_t match_addr, u16 match_port,
- u32 match_fib_index,
- nat_protocol_t match_protocol,
- ip4_address_t *mapping_addr, u16 *mapping_port,
- u32 *mapping_fib_index, u8 by_external,
- u8 *is_addr_only, u8 *is_identity_nat)
+nat44_ei_add_interface_address (nat44_ei_main_t *nm, u32 sw_if_index,
+ int is_del)
{
- snat_main_t *sm = &snat_main;
- clib_bihash_kv_8_8_t kv, value;
- snat_static_mapping_t *m;
- u16 port;
+ ip4_main_t *ip4_main = nm->ip4_main;
+ ip4_address_t *first_int_addr;
+ nat44_ei_static_map_resolve_t *rp;
+ u32 *indices_to_delete = 0;
+ int i, j;
+ u32 *auto_add_sw_if_indices = nm->auto_add_sw_if_indices;
- if (by_external)
- {
- init_nat_k (&kv, match_addr, match_port, 0, match_protocol);
- if (clib_bihash_search_8_8 (&sm->static_mapping_by_external, &kv,
- &value))
- {
- /* Try address only mapping */
- init_nat_k (&kv, match_addr, 0, 0, 0);
- if (clib_bihash_search_8_8 (&sm->static_mapping_by_external, &kv,
- &value))
- return 1;
- }
- m = pool_elt_at_index (sm->static_mappings, value.value);
+ first_int_addr = ip4_interface_first_address (ip4_main, sw_if_index,
+ 0 /* just want the address */);
- *mapping_fib_index = m->fib_index;
- *mapping_addr = m->local_addr;
- port = m->local_port;
- }
- else
+ for (i = 0; i < vec_len (auto_add_sw_if_indices); i++)
{
- init_nat_k (&kv, match_addr, match_port, match_fib_index,
- match_protocol);
- if (clib_bihash_search_8_8 (&sm->static_mapping_by_local, &kv, &value))
+ if (auto_add_sw_if_indices[i] == sw_if_index)
{
- /* Try address only mapping */
- init_nat_k (&kv, match_addr, 0, match_fib_index, 0);
- if (clib_bihash_search_8_8 (&sm->static_mapping_by_local, &kv,
- &value))
- return 1;
- }
- m = pool_elt_at_index (sm->static_mappings, value.value);
+ if (is_del)
+ {
+ /* if have address remove it */
+ if (first_int_addr)
+ (void) nat44_ei_del_address (nm, first_int_addr[0], 1);
+ else
+ {
+ for (j = 0; j < vec_len (nm->to_resolve); j++)
+ {
+ rp = nm->to_resolve + j;
+ if (rp->sw_if_index == sw_if_index)
+ vec_add1 (indices_to_delete, j);
+ }
+ if (vec_len (indices_to_delete))
+ {
+ for (j = vec_len (indices_to_delete) - 1; j >= 0; j--)
+ vec_del1 (nm->to_resolve, j);
+ vec_free (indices_to_delete);
+ }
+ }
+ vec_del1 (nm->auto_add_sw_if_indices, i);
+ }
+ else
+ return VNET_API_ERROR_VALUE_EXIST;
- *mapping_fib_index = sm->outside_fib_index;
- *mapping_addr = m->external_addr;
- port = m->external_port;
+ return 0;
+ }
}
- /* Address only mapping doesn't change port */
- if (is_addr_only_static_mapping (m))
- *mapping_port = match_port;
- else
- *mapping_port = port;
+ if (is_del)
+ return VNET_API_ERROR_NO_SUCH_ENTRY;
- if (PREDICT_FALSE (is_addr_only != 0))
- *is_addr_only = is_addr_only_static_mapping (m);
+ /* add to the auto-address list */
+ vec_add1 (nm->auto_add_sw_if_indices, sw_if_index);
- if (PREDICT_FALSE (is_identity_nat != 0))
- *is_identity_nat = is_identity_static_mapping (m);
+ /* If the address is already bound - or static - add it now */
+ if (first_int_addr)
+ (void) nat44_ei_add_address (nm, first_int_addr, ~0);
return 0;
}
-static void
-nat44_ei_worker_db_free (snat_main_per_thread_data_t *tsm)
+static int
+nat44_ei_is_address_used_in_static_mapping (ip4_address_t addr)
{
- pool_free (tsm->list_pool);
- pool_free (tsm->lru_pool);
- pool_free (tsm->sessions);
- pool_free (tsm->users);
-
- clib_bihash_free_8_8 (&tsm->user_hash);
+ nat44_ei_main_t *nm = &nat44_ei_main;
+ nat44_ei_static_mapping_t *m;
+ pool_foreach (m, nm->static_mappings)
+ {
+ if (nat44_ei_is_addr_only_static_mapping (m) ||
+ nat44_ei_is_identity_static_mapping (m))
+ continue;
+ if (m->external_addr.as_u32 == addr.as_u32)
+ return 1;
+ }
+ return 0;
}
-static void
-nat44_ei_worker_db_init (snat_main_per_thread_data_t *tsm, u32 translations,
- u32 translation_buckets, u32 user_buckets)
+int
+nat44_ei_del_address (nat44_ei_main_t *nm, ip4_address_t addr, u8 delete_sm)
{
- dlist_elt_t *head;
+ nat44_ei_address_t *a = 0;
+ nat44_ei_session_t *ses;
+ u32 *ses_to_be_removed = 0, *ses_index;
+ nat44_ei_main_per_thread_data_t *tnm;
+ nat44_ei_interface_t *interface;
+ nat44_ei_static_mapping_t *m;
+ int i;
- pool_alloc (tsm->list_pool, translations);
- pool_alloc (tsm->lru_pool, translations);
- pool_alloc (tsm->sessions, translations);
+ /* Find SNAT address */
+ for (i = 0; i < vec_len (nm->addresses); i++)
+ {
+ if (nm->addresses[i].addr.as_u32 == addr.as_u32)
+ {
+ a = nm->addresses + i;
+ break;
+ }
+ }
+ if (!a)
+ {
+ nat44_ei_log_err ("no such address");
+ return VNET_API_ERROR_NO_SUCH_ENTRY;
+ }
- clib_bihash_init_8_8 (&tsm->user_hash, "users", user_buckets, 0);
+ if (delete_sm)
+ {
+ pool_foreach (m, nm->static_mappings)
+ {
+ if (m->external_addr.as_u32 == addr.as_u32)
+ (void) nat44_ei_add_del_static_mapping (
+ m->local_addr, m->external_addr, m->local_port, m->external_port,
+ m->proto, ~0 /* sw_if_index */, m->vrf_id,
+ nat44_ei_is_addr_only_static_mapping (m),
+ nat44_ei_is_identity_static_mapping (m), m->tag, 0);
+ }
+ }
+ else
+ {
+ /* Check if address is used in some static mapping */
+ if (nat44_ei_is_address_used_in_static_mapping (addr))
+ {
+ nat44_ei_log_err ("address used in static mapping");
+ return VNET_API_ERROR_UNSPECIFIED;
+ }
+ }
- clib_bihash_set_kvp_format_fn_8_8 (&tsm->user_hash, format_user_kvp);
+ if (a->fib_index != ~0)
+ fib_table_unlock (a->fib_index, FIB_PROTOCOL_IP4, nm->fib_src_low);
- pool_get (tsm->lru_pool, head);
- tsm->tcp_trans_lru_head_index = head - tsm->lru_pool;
- clib_dlist_init (tsm->lru_pool, tsm->tcp_trans_lru_head_index);
+ /* Delete sessions using address */
+ if (a->busy_tcp_ports || a->busy_udp_ports || a->busy_icmp_ports)
+ {
+ vec_foreach (tnm, nm->per_thread_data)
+ {
+ pool_foreach (ses, tnm->sessions)
+ {
+ if (ses->out2in.addr.as_u32 == addr.as_u32)
+ {
+ nat44_ei_free_session_data (nm, ses,
+ tnm - nm->per_thread_data, 0);
+ vec_add1 (ses_to_be_removed, ses - tnm->sessions);
+ }
+ }
+ vec_foreach (ses_index, ses_to_be_removed)
+ {
+ ses = pool_elt_at_index (tnm->sessions, ses_index[0]);
+ nat44_ei_delete_session (nm, ses, tnm - nm->per_thread_data);
+ }
+ vec_free (ses_to_be_removed);
+ }
+ }
- pool_get (tsm->lru_pool, head);
- tsm->tcp_estab_lru_head_index = head - tsm->lru_pool;
- clib_dlist_init (tsm->lru_pool, tsm->tcp_estab_lru_head_index);
+#define _(N, i, n, s) vec_free (a->busy_##n##_ports_per_thread);
+ foreach_nat_protocol
+#undef _
+ vec_del1 (nm->addresses, i);
- pool_get (tsm->lru_pool, head);
- tsm->udp_lru_head_index = head - tsm->lru_pool;
- clib_dlist_init (tsm->lru_pool, tsm->udp_lru_head_index);
+ /* Delete external address from FIB */
+ pool_foreach (interface, nm->interfaces)
+ {
+ if (nat44_ei_interface_is_inside (interface) || nm->out2in_dpo)
+ continue;
+ nat44_ei_add_del_addr_to_fib (&addr, 32, interface->sw_if_index, 0);
+ break;
+ }
- pool_get (tsm->lru_pool, head);
- tsm->icmp_lru_head_index = head - tsm->lru_pool;
- clib_dlist_init (tsm->lru_pool, tsm->icmp_lru_head_index);
+ pool_foreach (interface, nm->output_feature_interfaces)
+ {
+ if (nat44_ei_interface_is_inside (interface) || nm->out2in_dpo)
+ continue;
+ nat44_ei_add_del_addr_to_fib (&addr, 32, interface->sw_if_index, 0);
+ break;
+ }
- pool_get (tsm->lru_pool, head);
- tsm->unk_proto_lru_head_index = head - tsm->lru_pool;
- clib_dlist_init (tsm->lru_pool, tsm->unk_proto_lru_head_index);
+ return 0;
}
static void
-nat44_ei_db_free ()
+nat44_ei_ip4_add_del_interface_address_cb (ip4_main_t *im, uword opaque,
+ u32 sw_if_index,
+ ip4_address_t *address,
+ u32 address_length,
+ u32 if_address_index, u32 is_delete)
{
- snat_main_t *sm = &snat_main;
- snat_main_per_thread_data_t *tsm;
+ nat44_ei_main_t *nm = &nat44_ei_main;
+ nat44_ei_static_map_resolve_t *rp;
+ ip4_address_t l_addr;
+ int i, j;
+ int rv;
+ nat44_ei_address_t *addresses = nm->addresses;
+
+ if (!nm->enabled)
+ return;
+
+ for (i = 0; i < vec_len (nm->auto_add_sw_if_indices); i++)
+ {
+ if (sw_if_index == nm->auto_add_sw_if_indices[i])
+ goto match;
+ }
- pool_free (sm->static_mappings);
- clib_bihash_free_8_8 (&sm->static_mapping_by_local);
- clib_bihash_free_8_8 (&sm->static_mapping_by_external);
+ return;
- if (sm->pat)
+match:
+ if (!is_delete)
{
- clib_bihash_free_8_8 (&sm->in2out);
- clib_bihash_free_8_8 (&sm->out2in);
- vec_foreach (tsm, sm->per_thread_data)
+ /* Don't trip over lease renewal, static config */
+ for (j = 0; j < vec_len (addresses); j++)
+ if (addresses[j].addr.as_u32 == address->as_u32)
+ return;
+
+ (void) nat44_ei_add_address (nm, address, ~0);
+ /* Scan static map resolution vector */
+ for (j = 0; j < vec_len (nm->to_resolve); j++)
{
- nat44_ei_worker_db_free (tsm);
+ rp = nm->to_resolve + j;
+ if (rp->addr_only)
+ continue;
+ /* On this interface? */
+ if (rp->sw_if_index == sw_if_index)
+ {
+ /* Indetity mapping? */
+ if (rp->l_addr.as_u32 == 0)
+ l_addr.as_u32 = address[0].as_u32;
+ else
+ l_addr.as_u32 = rp->l_addr.as_u32;
+ /* Add the static mapping */
+ rv = nat44_ei_add_del_static_mapping (
+ l_addr, address[0], rp->l_port, rp->e_port, rp->proto,
+ ~0 /* sw_if_index */, rp->vrf_id, rp->addr_only,
+ rp->identity_nat, rp->tag, 1);
+ if (rv)
+ nat_elog_notice_X1 (
+ nm, "nat44_ei_add_del_static_mapping returned %d", "i4", rv);
+ }
}
+ return;
}
+ else
+ {
+ (void) nat44_ei_del_address (nm, address[0], 1);
+ return;
+ }
+}
+
+int
+nat44_ei_set_frame_queue_nelts (u32 frame_queue_nelts)
+{
+ fail_if_enabled ();
+ nat44_ei_main_t *nm = &nat44_ei_main;
+ nm->frame_queue_nelts = frame_queue_nelts;
+ return 0;
}
static void
-nat44_ei_db_init (u32 translations, u32 translation_buckets, u32 user_buckets)
+nat44_ei_ip4_add_del_addr_only_sm_cb (ip4_main_t *im, uword opaque,
+ u32 sw_if_index, ip4_address_t *address,
+ u32 address_length, u32 if_address_index,
+ u32 is_delete)
{
- snat_main_t *sm = &snat_main;
- snat_main_per_thread_data_t *tsm;
+ nat44_ei_main_t *nm = &nat44_ei_main;
+ nat44_ei_static_map_resolve_t *rp;
+ nat44_ei_static_mapping_t *m;
+ clib_bihash_kv_8_8_t kv, value;
+ int i, rv;
+ ip4_address_t l_addr;
- u32 static_mapping_buckets = 1024;
- u32 static_mapping_memory_size = 64 << 20;
+ if (!nm->enabled)
+ return;
- clib_bihash_init_8_8 (&sm->static_mapping_by_local,
- "static_mapping_by_local", static_mapping_buckets,
- static_mapping_memory_size);
- clib_bihash_init_8_8 (&sm->static_mapping_by_external,
- "static_mapping_by_external", static_mapping_buckets,
- static_mapping_memory_size);
- clib_bihash_set_kvp_format_fn_8_8 (&sm->static_mapping_by_local,
- format_static_mapping_kvp);
- clib_bihash_set_kvp_format_fn_8_8 (&sm->static_mapping_by_external,
- format_static_mapping_kvp);
-
- if (sm->pat)
- {
- clib_bihash_init_8_8 (&sm->in2out, "in2out", translation_buckets, 0);
- clib_bihash_init_8_8 (&sm->out2in, "out2in", translation_buckets, 0);
- clib_bihash_set_kvp_format_fn_8_8 (&sm->in2out, format_session_kvp);
- clib_bihash_set_kvp_format_fn_8_8 (&sm->out2in, format_session_kvp);
- vec_foreach (tsm, sm->per_thread_data)
- {
- nat44_ei_worker_db_init (tsm, translations, translation_buckets,
- user_buckets);
- }
+ for (i = 0; i < vec_len (nm->to_resolve); i++)
+ {
+ rp = nm->to_resolve + i;
+ if (rp->addr_only == 0)
+ continue;
+ if (rp->sw_if_index == sw_if_index)
+ goto match;
+ }
+
+ return;
+
+match:
+ init_nat_k (&kv, *address, rp->addr_only ? 0 : rp->e_port,
+ nm->outside_fib_index, rp->addr_only ? 0 : rp->proto);
+ if (clib_bihash_search_8_8 (&nm->static_mapping_by_external, &kv, &value))
+ m = 0;
+ else
+ m = pool_elt_at_index (nm->static_mappings, value.value);
+
+ if (!is_delete)
+ {
+ /* Don't trip over lease renewal, static config */
+ if (m)
+ return;
+ }
+ else
+ {
+ if (!m)
+ return;
}
+
+ /* Indetity mapping? */
+ if (rp->l_addr.as_u32 == 0)
+ l_addr.as_u32 = address[0].as_u32;
+ else
+ l_addr.as_u32 = rp->l_addr.as_u32;
+ /* Add the static mapping */
+
+ rv = nat44_ei_add_del_static_mapping (
+ l_addr, address[0], rp->l_port, rp->e_port, rp->proto,
+ ~0 /* sw_if_index */, rp->vrf_id, rp->addr_only, rp->identity_nat, rp->tag,
+ !is_delete);
+ if (rv)
+ nat_elog_notice_X1 (nm, "nat44_ei_add_del_static_mapping returned %d",
+ "i4", rv);
}
-void
-nat44_ei_sessions_clear ()
+VLIB_NODE_FN (nat44_ei_classify_node)
+(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
{
+ u32 n_left_from, *from, *to_next;
+ nat44_ei_classify_next_t next_index;
nat44_ei_main_t *nm = &nat44_ei_main;
+ nat44_ei_static_mapping_t *m;
+ u32 next_in2out = 0, next_out2in = 0;
- snat_main_per_thread_data_t *tsm;
- snat_main_t *sm = &snat_main;
+ from = vlib_frame_vector_args (frame);
+ n_left_from = frame->n_vectors;
+ next_index = node->cached_next_index;
- if (sm->pat)
+ while (n_left_from > 0)
{
- clib_bihash_free_8_8 (&sm->in2out);
- clib_bihash_free_8_8 (&sm->out2in);
- clib_bihash_init_8_8 (&sm->in2out, "in2out", nm->translation_buckets, 0);
- clib_bihash_init_8_8 (&sm->out2in, "out2in", nm->translation_buckets, 0);
- clib_bihash_set_kvp_format_fn_8_8 (&sm->in2out, format_session_kvp);
- clib_bihash_set_kvp_format_fn_8_8 (&sm->out2in, format_session_kvp);
- vec_foreach (tsm, sm->per_thread_data)
+ u32 n_left_to_next;
+
+ vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
+
+ while (n_left_from > 0 && n_left_to_next > 0)
{
- nat44_ei_worker_db_free (tsm);
- nat44_ei_worker_db_init (tsm, nm->translations,
- nm->translation_buckets, nm->user_buckets);
+ u32 bi0;
+ vlib_buffer_t *b0;
+ u32 next0 = NAT44_EI_CLASSIFY_NEXT_IN2OUT;
+ ip4_header_t *ip0;
+ nat44_ei_address_t *ap;
+ clib_bihash_kv_8_8_t kv0, value0;
+
+ /* speculatively enqueue b0 to the current next frame */
+ bi0 = from[0];
+ to_next[0] = bi0;
+ from += 1;
+ to_next += 1;
+ n_left_from -= 1;
+ n_left_to_next -= 1;
+
+ b0 = vlib_get_buffer (vm, bi0);
+ ip0 = vlib_buffer_get_current (b0);
+
+ vec_foreach (ap, nm->addresses)
+ {
+ if (ip0->dst_address.as_u32 == ap->addr.as_u32)
+ {
+ next0 = NAT44_EI_CLASSIFY_NEXT_OUT2IN;
+ goto enqueue0;
+ }
+ }
+
+ if (PREDICT_FALSE (pool_elts (nm->static_mappings)))
+ {
+ init_nat_k (&kv0, ip0->dst_address, 0, 0, 0);
+ /* try to classify the fragment based on IP header alone */
+ if (!clib_bihash_search_8_8 (&nm->static_mapping_by_external,
+ &kv0, &value0))
+ {
+ m = pool_elt_at_index (nm->static_mappings, value0.value);
+ if (m->local_addr.as_u32 != m->external_addr.as_u32)
+ next0 = NAT44_EI_CLASSIFY_NEXT_OUT2IN;
+ goto enqueue0;
+ }
+ init_nat_k (&kv0, ip0->dst_address,
+ vnet_buffer (b0)->ip.reass.l4_dst_port, 0,
+ ip_proto_to_nat_proto (ip0->protocol));
+ if (!clib_bihash_search_8_8 (&nm->static_mapping_by_external,
+ &kv0, &value0))
+ {
+ m = pool_elt_at_index (nm->static_mappings, value0.value);
+ if (m->local_addr.as_u32 != m->external_addr.as_u32)
+ next0 = NAT44_EI_CLASSIFY_NEXT_OUT2IN;
+ }
+ }
+
+ enqueue0:
+ if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) &&
+ (b0->flags & VLIB_BUFFER_IS_TRACED)))
+ {
+ nat44_ei_classify_trace_t *t =
+ vlib_add_trace (vm, node, b0, sizeof (*t));
+ t->cached = 0;
+ t->next_in2out = next0 == NAT44_EI_CLASSIFY_NEXT_IN2OUT ? 1 : 0;
+ }
+
+ next_in2out += next0 == NAT44_EI_CLASSIFY_NEXT_IN2OUT;
+ next_out2in += next0 == NAT44_EI_CLASSIFY_NEXT_OUT2IN;
+
+ /* verify speculative enqueue, maybe switch current next frame */
+ vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
+ n_left_to_next, bi0, next0);
}
+
+ vlib_put_next_frame (vm, node, next_index, n_left_to_next);
}
- // TODO: function for reset counters
- vlib_zero_simple_counter (&sm->total_users, 0);
- vlib_zero_simple_counter (&sm->total_sessions, 0);
- vlib_zero_simple_counter (&sm->user_limit_reached, 0);
+ vlib_node_increment_counter (
+ vm, node->node_index, NAT44_EI_CLASSIFY_ERROR_NEXT_IN2OUT, next_in2out);
+ vlib_node_increment_counter (
+ vm, node->node_index, NAT44_EI_CLASSIFY_ERROR_NEXT_OUT2IN, next_out2in);
+ return frame->n_vectors;
}
+VLIB_REGISTER_NODE (nat44_ei_classify_node) = {
+ .name = "nat44-ei-classify",
+ .vector_size = sizeof (u32),
+ .format_trace = format_nat44_ei_classify_trace,
+ .type = VLIB_NODE_TYPE_INTERNAL,
+ .n_errors = ARRAY_LEN(nat44_ei_classify_error_strings),
+ .error_strings = nat44_ei_classify_error_strings,
+ .n_next_nodes = NAT44_EI_CLASSIFY_N_NEXT,
+ .next_nodes = {
+ [NAT44_EI_CLASSIFY_NEXT_IN2OUT] = "nat44-ei-in2out",
+ [NAT44_EI_CLASSIFY_NEXT_OUT2IN] = "nat44-ei-out2in",
+ [NAT44_EI_CLASSIFY_NEXT_DROP] = "error-drop",
+ },
+};
+
/*
* fd.io coding-style-patch-verification: ON
*
Code Review / vpp.git / blobdiff