#include <vnet/plugin/plugin.h>
#include <nat/nat.h>
#include <nat/nat_dpo.h>
-#include <nat/nat_ipfix_logging.h>
-#include <nat/nat64.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 <nat/nat_syslog.h>
-#include <nat/nat_ha.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 <nat/nat44-ei/nat44_ei_ha.h>
+#include <nat/nat44-ei/nat44_ei.h>
#include <vpp/app/version.h>
+#include <nat/lib/nat_inlines.h>
snat_main_t snat_main;
-fib_source_t nat_fib_src_hi;
-fib_source_t nat_fib_src_low;
+#define skip_if_disabled() \
+ do \
+ { \
+ snat_main_t *sm = &snat_main; \
+ if (PREDICT_FALSE (!sm->enabled)) \
+ return; \
+ } \
+ while (0)
+
+#define fail_if_enabled() \
+ do \
+ { \
+ snat_main_t *sm = &snat_main; \
+ if (PREDICT_FALSE (sm->enabled)) \
+ { \
+ nat_log_err ("plugin enabled"); \
+ return 1; \
+ } \
+ } \
+ while (0)
+
+#define fail_if_disabled() \
+ do \
+ { \
+ snat_main_t *sm = &snat_main; \
+ if (PREDICT_FALSE (!sm->enabled)) \
+ { \
+ nat_log_err ("plugin disabled"); \
+ return 1; \
+ } \
+ } \
+ while (0)
/* *INDENT-OFF* */
/* Hook up input features */
.node_name = "nat44-hairpin-dst",
.runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa","ip4-sv-reassembly-feature"),
};
-VNET_FEATURE_INIT (ip4_nat44_ed_hairpin_dst, static) = {
- .arc_name = "ip4-unicast",
- .node_name = "nat44-ed-hairpin-dst",
- .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa","ip4-sv-reassembly-feature"),
-};
/* Hook up output features */
VNET_FEATURE_INIT (ip4_snat_in2out_output, static) = {
.node_name = "nat44-hairpin-src",
.runs_after = VNET_FEATURES ("acl-plugin-out-ip4-fa","ip4-sv-reassembly-output-feature"),
};
-VNET_FEATURE_INIT (ip4_nat44_ed_in2out_output, static) = {
+VNET_FEATURE_INIT (nat_pre_in2out_output, static) = {
.arc_name = "ip4-output",
- .node_name = "nat44-ed-in2out-output",
+ .node_name = "nat-pre-in2out-output",
.runs_after = VNET_FEATURES ("ip4-sv-reassembly-output-feature"),
.runs_before = VNET_FEATURES ("acl-plugin-out-ip4-fa"),
};
-VNET_FEATURE_INIT (ip4_nat44_ed_hairpin_src, static) = {
+VNET_FEATURE_INIT (ip4_nat44_ed_in2out_output, static) = {
.arc_name = "ip4-output",
- .node_name = "nat44-ed-hairpin-src",
+ .node_name = "nat44-ed-in2out-output",
.runs_after = VNET_FEATURES ("ip4-sv-reassembly-output-feature"),
.runs_before = VNET_FEATURES ("acl-plugin-out-ip4-fa"),
};
.node_name = "nat44-hairpinning",
.runs_before = VNET_FEATURES("ip4-local-end-of-arc"),
};
-VNET_FEATURE_INIT (ip4_nat44_ed_hairpinning, static) =
-{
- .arc_name = "ip4-local",
- .node_name = "nat44-ed-hairpinning",
- .runs_before = VNET_FEATURES("ip4-local-end-of-arc"),
-};
-
VLIB_PLUGIN_REGISTER () = {
.version = VPP_BUILD_VER,
};
/* *INDENT-ON* */
+static void nat44_ed_db_init (u32 translations, u32 translation_buckets,
+ u32 user_buckets);
+
+static void nat44_ed_db_free ();
+
+static u32
+nat44_ed_get_worker_out2in_cb (vlib_buffer_t * b, ip4_header_t * ip,
+ u32 rx_fib_index, u8 is_output);
+
+static u32
+nat44_ed_get_worker_in2out_cb (ip4_header_t * ip, u32 rx_fib_index,
+ u8 is_output);
+
+u32 nat_calc_bihash_buckets (u32 n_elts);
+
+u8 *
+format_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_snat_key, v->key, v->value);
+
+ return s;
+}
+
+u8 *
+format_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_snat_key, v->key, v->value);
+
+ return s;
+}
+
+u8 *
+format_user_kvp (u8 * s, va_list * args)
+{
+ clib_bihash_kv_8_8_t *v = va_arg (*args, clib_bihash_kv_8_8_t *);
+ snat_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_ed_session_kvp (u8 * s, va_list * args)
+{
+ clib_bihash_kv_16_8_t *v = va_arg (*args, clib_bihash_kv_16_8_t *);
+
+ u8 proto;
+ u16 r_port, l_port;
+ ip4_address_t l_addr, r_addr;
+ u32 fib_index;
+
+ split_ed_kv (v, &l_addr, &r_addr, &proto, &fib_index, &l_port, &r_port);
+ s = format (s,
+ "local %U:%d remote %U:%d proto %U fib %d thread-index %u "
+ "session-index %u",
+ format_ip4_address, &l_addr, clib_net_to_host_u16 (l_port),
+ format_ip4_address, &r_addr, clib_net_to_host_u16 (r_port),
+ format_ip_protocol, proto, fib_index,
+ ed_value_get_thread_index (v), ed_value_get_session_index (v));
+
+ return s;
+}
+
void
nat_free_session_data (snat_main_t * sm, snat_session_t * s, u32 thread_index,
u8 is_ha)
{
clib_bihash_kv_8_8_t kv;
- u8 proto;
- u16 r_port, l_port;
- ip4_address_t *l_addr, *r_addr;
- u32 fib_index = 0;
- clib_bihash_kv_16_8_t ed_kv;
snat_main_per_thread_data_t *tsm =
vec_elt_at_index (sm->per_thread_data, thread_index);
+ if (is_ed_session (s))
+ {
+ per_vrf_sessions_unregister_session (s, thread_index);
+
+ if (nat_ed_ses_i2o_flow_hash_add_del (sm, thread_index, s, 0))
+ nat_elog_warn ("flow hash del failed");
+
+ if (nat_ed_ses_o2i_flow_hash_add_del (sm, thread_index, s, 0))
+ nat_elog_warn ("flow hash del failed");
+ }
+
if (is_fwd_bypass_session (s))
{
- if (snat_is_unk_proto_session (s))
- {
- init_ed_k (&ed_kv, s->in2out.addr, 0, s->ext_host_addr, 0, 0,
- s->in2out.port);
- }
- else
- {
- l_port = s->in2out.port;
- r_port = s->ext_host_port;
- l_addr = &s->in2out.addr;
- r_addr = &s->ext_host_addr;
- proto = nat_proto_to_ip_proto (s->nat_proto);
- init_ed_k (&ed_kv, *l_addr, l_port, *r_addr, r_port, fib_index,
- proto);
- }
- if (clib_bihash_add_del_16_8 (&tsm->in2out_ed, &ed_kv, 0))
- nat_elog_warn ("in2out_ed key del failed");
return;
}
if (is_affinity_sessions (s))
nat_affinity_unlock (s->ext_host_addr, s->out2in.addr,
s->nat_proto, s->out2in.port);
- l_addr = &s->out2in.addr;
- r_addr = &s->ext_host_addr;
- fib_index = s->out2in.fib_index;
- if (snat_is_unk_proto_session (s))
- {
- proto = s->in2out.port;
- r_port = 0;
- l_port = 0;
- }
- else
- {
- proto = nat_proto_to_ip_proto (s->nat_proto);
- l_port = s->out2in.port;
- r_port = s->ext_host_port;
- }
- init_ed_k (&ed_kv, *l_addr, l_port, *r_addr, r_port, fib_index, proto);
- if (clib_bihash_add_del_16_8 (&sm->out2in_ed, &ed_kv, 0))
- nat_elog_warn ("out2in_ed key del failed");
- l_addr = &s->in2out.addr;
- fib_index = s->in2out.fib_index;
- if (!snat_is_unk_proto_session (s))
- l_port = s->in2out.port;
- if (is_twice_nat_session (s))
- {
- r_addr = &s->ext_host_nat_addr;
- r_port = s->ext_host_nat_port;
- }
- init_ed_k (&ed_kv, *l_addr, l_port, *r_addr, r_port, fib_index, proto);
- if (clib_bihash_add_del_16_8 (&tsm->in2out_ed, &ed_kv, 0))
- nat_elog_warn ("in2out_ed key del failed");
if (!is_ha)
nat_syslog_nat44_sdel (s->user_index, s->in2out.fib_index,
if (!is_ha)
{
/* log NAT event */
- snat_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);
- }
-
- /* Twice NAT address and port for external host */
- if (is_twice_nat_session (s))
- {
- snat_free_outside_address_and_port (sm->twice_nat_addresses,
- thread_index,
- &s->ext_host_nat_addr,
- s->ext_host_nat_port, s->nat_proto);
- }
-
- if (snat_is_session_static (s))
- return;
-
- snat_free_outside_address_and_port (sm->addresses, thread_index,
- &s->out2in.addr, s->out2in.port,
- s->nat_proto);
-}
-
-int
-nat44_set_session_limit (u32 session_limit, u32 vrf_id)
-{
- snat_main_t *sm = &snat_main;
- u32 fib_index = fib_table_find (FIB_PROTOCOL_IP4, vrf_id);
- u32 len = vec_len (sm->max_translations_per_fib);
-
- if (len <= fib_index)
- {
- vec_validate (sm->max_translations_per_fib, fib_index + 1);
-
- for (; len < vec_len (sm->max_translations_per_fib); len++)
- sm->max_translations_per_fib[len] = sm->max_translations_per_thread;
- }
-
- sm->max_translations_per_fib[fib_index] = session_limit;
- return 0;
-}
-
-void
-nat44_free_session_data (snat_main_t * sm, snat_session_t * s,
- u32 thread_index, u8 is_ha)
-{
- u8 proto;
- u16 r_port, l_port;
- ip4_address_t *l_addr, *r_addr;
- u32 fib_index;
- clib_bihash_kv_16_8_t ed_kv;
- snat_main_per_thread_data_t *tsm =
- vec_elt_at_index (sm->per_thread_data, thread_index);
-
- if (is_fwd_bypass_session (s))
- {
- if (snat_is_unk_proto_session (s))
- {
- proto = s->in2out.port;
- r_port = 0;
- l_port = 0;
- }
- else
- {
- proto = nat_proto_to_ip_proto (s->nat_proto);
- l_port = s->in2out.port;
- r_port = s->ext_host_port;
- }
-
- l_addr = &s->in2out.addr;
- r_addr = &s->ext_host_addr;
- fib_index = 0;
- init_ed_k (&ed_kv, *l_addr, l_port, *r_addr, r_port, fib_index, proto);
-
- if (PREDICT_FALSE
- (clib_bihash_add_del_16_8 (&tsm->in2out_ed, &ed_kv, 0)))
- nat_elog_warn ("in2out_ed key del failed");
- return;
- }
-
- /* session lookup tables */
- if (is_affinity_sessions (s))
- nat_affinity_unlock (s->ext_host_addr, s->out2in.addr,
- s->nat_proto, s->out2in.port);
- l_addr = &s->out2in.addr;
- r_addr = &s->ext_host_addr;
- fib_index = s->out2in.fib_index;
- if (snat_is_unk_proto_session (s))
- {
- proto = s->in2out.port;
- r_port = 0;
- l_port = 0;
- }
- else
- {
- proto = nat_proto_to_ip_proto (s->nat_proto);
- l_port = s->out2in.port;
- r_port = s->ext_host_port;
- }
- init_ed_k (&ed_kv, *l_addr, l_port, *r_addr, r_port, fib_index, proto);
-
- if (PREDICT_FALSE (clib_bihash_add_del_16_8 (&sm->out2in_ed, &ed_kv, 0)))
- nat_elog_warn ("out2in_ed key del failed");
-
- l_addr = &s->in2out.addr;
- fib_index = s->in2out.fib_index;
-
- if (!snat_is_unk_proto_session (s))
- l_port = s->in2out.port;
-
- if (is_twice_nat_session (s))
- {
- r_addr = &s->ext_host_nat_addr;
- r_port = s->ext_host_nat_port;
- }
- init_ed_k (&ed_kv, *l_addr, l_port, *r_addr, r_port, fib_index, proto);
-
- if (PREDICT_FALSE (clib_bihash_add_del_16_8 (&tsm->in2out_ed, &ed_kv, 0)))
- nat_elog_warn ("in2out_ed key del failed");
-
- if (!is_ha)
- {
- nat_syslog_nat44_sdel (s->user_index, s->in2out.fib_index,
- &s->in2out.addr, s->in2out.port,
- &s->ext_host_nat_addr, s->ext_host_nat_port,
- &s->out2in.addr, s->out2in.port,
- &s->ext_host_addr, s->ext_host_port,
- s->nat_proto, is_twice_nat_session (s));
- }
-
- if (snat_is_unk_proto_session (s))
- return;
+ 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);
- if (!is_ha)
- {
- snat_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);
s->nat_proto);
}
-
snat_user_t *
nat_user_get_or_create (snat_main_t * sm, ip4_address_t * addr, u32 fib_index,
u32 thread_index)
return u;
}
+// only NAT EI
snat_session_t *
nat_session_alloc_or_recycle (snat_main_t * sm, snat_user_t * u,
u32 thread_index, f64 now)
/* Get the session */
s = pool_elt_at_index (tsm->sessions, session_index);
+
+ // TODO: ONLY EI version should be called
nat_free_session_data (sm, s, thread_index, 0);
if (snat_is_session_static (s))
u->nstaticsessions--;
snat_add_del_addr_to_fib (ip4_address_t * addr, u8 p_len, u32 sw_if_index,
int is_add)
{
+ snat_main_t *sm = &snat_main;
fib_prefix_t prefix = {
.fp_len = p_len,
.fp_proto = FIB_PROTOCOL_IP4,
if (is_add)
fib_table_entry_update_one_path (fib_index,
&prefix,
- nat_fib_src_low,
+ sm->fib_src_low,
(FIB_ENTRY_FLAG_CONNECTED |
FIB_ENTRY_FLAG_LOCAL |
FIB_ENTRY_FLAG_EXCLUSIVE),
sw_if_index,
~0, 1, NULL, FIB_ROUTE_PATH_FLAG_NONE);
else
- fib_table_entry_delete (fib_index, &prefix, nat_fib_src_low);
+ fib_table_entry_delete (fib_index, &prefix, sm->fib_src_low);
}
int
vlib_thread_main_t *tm = vlib_get_thread_main ();
if (twice_nat && !sm->endpoint_dependent)
- return VNET_API_ERROR_FEATURE_DISABLED;
+ {
+ nat_log_err ("unsupported");
+ return VNET_API_ERROR_UNSUPPORTED;
+ }
/* Check if address already exists */
/* *INDENT-OFF* */
vec_foreach (ap, twice_nat ? sm->twice_nat_addresses : sm->addresses)
{
if (ap->addr.as_u32 == addr->as_u32)
- return VNET_API_ERROR_VALUE_EXIST;
+ {
+ nat_log_err ("address exist");
+ return VNET_API_ERROR_VALUE_EXIST;
+ }
}
/* *INDENT-ON* */
if (vrf_id != ~0)
ap->fib_index =
fib_table_find_or_create_and_lock (FIB_PROTOCOL_IP4, vrf_id,
- nat_fib_src_low);
+ sm->fib_src_low);
else
ap->fib_index = ~0;
-#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 (twice_nat)
+
+ /* *INDENT-OFF* */
+ #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 _
+ /* *INDENT-ON* */
+
+ if (twice_nat)
return 0;
/* Add external address to FIB */
/* *INDENT-OFF* */
- pool_foreach (i, sm->interfaces,
- ({
+ pool_foreach (i, sm->interfaces)
+ {
if (nat_interface_is_inside(i) || sm->out2in_dpo)
continue;
snat_add_del_addr_to_fib(addr, 32, i->sw_if_index, 1);
break;
- }));
- pool_foreach (i, sm->output_feature_interfaces,
- ({
+ }
+ pool_foreach (i, sm->output_feature_interfaces)
+ {
if (nat_interface_is_inside(i) || sm->out2in_dpo)
continue;
snat_add_del_addr_to_fib(addr, 32, i->sw_if_index, 1);
break;
- }));
+ }
/* *INDENT-ON* */
return 0;
{
snat_static_mapping_t *m;
/* *INDENT-OFF* */
- pool_foreach (m, sm->static_mappings,
- ({
+ pool_foreach (m, sm->static_mappings)
+ {
if (is_addr_only_static_mapping (m) ||
is_out2in_only_static_mapping (m) ||
is_identity_static_mapping (m))
continue;
if (m->external_addr.as_u32 == addr.as_u32)
return 1;
- }));
+ }
/* *INDENT-ON* */
return 0;
}
static void
-snat_add_static_mapping_when_resolved (snat_main_t * sm,
- ip4_address_t l_addr,
- u16 l_port,
- u32 sw_if_index,
- u16 e_port,
- u32 vrf_id,
- nat_protocol_t proto,
- int addr_only, int is_add, u8 * tag,
- int twice_nat, int out2in_only,
- int identity_nat)
+snat_add_static_mapping_when_resolved (snat_main_t *sm, ip4_address_t l_addr,
+ u16 l_port, u32 sw_if_index, u16 e_port,
+ u32 vrf_id, nat_protocol_t proto,
+ int addr_only, u8 *tag, int twice_nat,
+ int out2in_only, int identity_nat,
+ ip4_address_t pool_addr, int exact)
{
snat_static_map_resolve_t *rp;
rp->vrf_id = vrf_id;
rp->proto = proto;
rp->addr_only = addr_only;
- rp->is_add = is_add;
rp->twice_nat = twice_nat;
rp->out2in_only = out2in_only;
rp->identity_nat = identity_nat;
rp->tag = vec_dup (tag);
+ rp->pool_addr = pool_addr;
+ rp->exact = exact;
}
-static u32
+u32
get_thread_idx_by_port (u16 e_port)
{
snat_main_t *sm = &snat_main;
}
void
-snat_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))
- {
- user_index = value.value;
- u = pool_elt_at_index (tsm->users, user_index);
- if (u->nstaticsessions)
- {
- 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)
- {
- 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 ((s->out2in.addr.as_u32 != e_addr.as_u32) ||
- (s->out2in.port != e_port))
- continue;
- }
-
- if (is_lb_session (s))
- continue;
-
- if (!snat_is_session_static (s))
- continue;
-
- nat_free_session_data (sm, s, tsm - sm->per_thread_data, 0);
- nat44_delete_session (sm, s, tsm - sm->per_thread_data);
-
- if (!addr_only)
- break;
- }
- }
- }
-}
-
-void
-snat_ed_static_mapping_del_sessions (snat_main_t * sm,
- snat_main_per_thread_data_t * tsm,
- ip4_address_t l_addr,
- u16 l_port,
- u8 protocol,
- u32 fib_index, int addr_only,
- ip4_address_t e_addr, u16 e_port)
+nat_ed_static_mapping_del_sessions (snat_main_t * sm,
+ snat_main_per_thread_data_t * tsm,
+ ip4_address_t l_addr,
+ u16 l_port,
+ u8 protocol,
+ u32 fib_index, int addr_only,
+ ip4_address_t e_addr, u16 e_port)
{
snat_session_t *s;
u32 *indexes_to_free = NULL;
/* *INDENT-OFF* */
- pool_foreach (s, tsm->sessions, {
+ pool_foreach (s, tsm->sessions) {
if (s->in2out.fib_index != fib_index ||
s->in2out.addr.as_u32 != l_addr.as_u32)
{
vec_add1 (indexes_to_free, s - tsm->sessions);
if (!addr_only)
break;
- });
+ }
/* *INDENT-ON* */
u32 *ses_index;
vec_foreach (ses_index, indexes_to_free)
vec_free (indexes_to_free);
}
-int
-snat_add_static_mapping (ip4_address_t l_addr, ip4_address_t e_addr,
- u16 l_port, u16 e_port, u32 vrf_id, int addr_only,
- u32 sw_if_index, nat_protocol_t proto, int is_add,
- twice_nat_type_t twice_nat, u8 out2in_only, u8 * tag,
- u8 identity_nat)
+static_always_inline int
+nat44_ed_add_del_static_mapping (ip4_address_t l_addr, ip4_address_t e_addr,
+ u16 l_port, u16 e_port, u32 vrf_id,
+ int addr_only, u32 sw_if_index,
+ nat_protocol_t proto, int is_add,
+ twice_nat_type_t twice_nat, u8 out2in_only,
+ u8 *tag, u8 identity_nat,
+ ip4_address_t pool_addr, int exact)
{
snat_main_t *sm = &snat_main;
snat_static_mapping_t *m;
if (!sm->endpoint_dependent)
{
if (twice_nat || out2in_only)
- return VNET_API_ERROR_FEATURE_DISABLED;
+ return VNET_API_ERROR_UNSUPPORTED;
}
/* If the external address is a specific interface address */
if (rp_match)
return VNET_API_ERROR_VALUE_EXIST;
- snat_add_static_mapping_when_resolved
- (sm, l_addr, l_port, sw_if_index, e_port, vrf_id, proto,
- addr_only, is_add, tag, twice_nat, out2in_only, identity_nat);
+ snat_add_static_mapping_when_resolved (
+ sm, l_addr, l_port, sw_if_index, e_port, vrf_id, proto, addr_only,
+ tag, twice_nat, out2in_only, identity_nat, pool_addr, exact);
/* DHCP resolution required? */
if (first_int_addr == 0)
if (is_identity_static_mapping (m))
{
/* *INDENT-OFF* */
- pool_foreach (local, m->locals,
- ({
+ pool_foreach (local, m->locals)
+ {
if (local->vrf_id == vrf_id)
return VNET_API_ERROR_VALUE_EXIST;
- }));
+ }
/* *INDENT-ON* */
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,
- nat_fib_src_low);
+ sm->fib_src_low);
init_nat_kv (&kv, m->local_addr, m->local_port,
local->fib_index, m->proto,
m - sm->static_mappings);
if (vrf_id != ~0)
fib_index =
fib_table_find_or_create_and_lock (FIB_PROTOCOL_IP4, vrf_id,
- nat_fib_src_low);
+ sm->fib_src_low);
/* If not specified use inside VRF id from SNAT plugin startup config */
else
{
fib_index = sm->inside_fib_index;
vrf_id = sm->inside_vrf_id;
- fib_table_lock (fib_index, FIB_PROTOCOL_IP4, nat_fib_src_low);
+ fib_table_lock (fib_index, FIB_PROTOCOL_IP4, sm->fib_src_low);
}
if (!(out2in_only || identity_nat))
m->local_addr = l_addr;
m->external_addr = e_addr;
m->twice_nat = twice_nat;
+
+ if (twice_nat == TWICE_NAT && exact)
+ {
+ m->flags |= NAT_STATIC_MAPPING_FLAG_EXACT_ADDRESS;
+ m->pool_addr = pool_addr;
+ }
+
if (out2in_only)
m->flags |= NAT_STATIC_MAPPING_FLAG_OUT2IN_ONLY;
if (addr_only)
else
tsm = vec_elt_at_index (sm->per_thread_data, sm->num_workers);
- init_nat_kv (&kv, m->local_addr, m->local_port, fib_index, m->proto,
- m - sm->static_mappings);
if (!out2in_only)
- clib_bihash_add_del_8_8 (&sm->static_mapping_by_local, &kv, 1);
+ {
+ init_nat_kv (&kv, m->local_addr, m->local_port, fib_index, m->proto,
+ m - sm->static_mappings);
+ clib_bihash_add_del_8_8 (&sm->static_mapping_by_local, &kv, 1);
+ }
init_nat_kv (&kv, m->external_addr, m->external_port, 0, m->proto,
m - sm->static_mappings);
clib_bihash_add_del_8_8 (&sm->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))
{
u_key.addr = m->local_addr;
vrf_id = sm->inside_vrf_id;
/* *INDENT-OFF* */
- pool_foreach (local, m->locals,
- ({
+ pool_foreach (local, m->locals)
+ {
if (local->vrf_id == vrf_id)
find = local - m->locals;
- }));
+ }
/* *INDENT-ON* */
if (find == ~0)
return VNET_API_ERROR_NO_SUCH_ENTRY;
{
if (sm->endpoint_dependent)
{
- snat_ed_static_mapping_del_sessions (sm, tsm, m->local_addr,
- m->local_port, m->proto,
- fib_index, addr_only,
- e_addr, e_port);
+ nat_ed_static_mapping_del_sessions (sm, tsm, m->local_addr,
+ m->local_port, m->proto,
+ fib_index, addr_only,
+ e_addr, e_port);
}
else
{
u_key.addr = m->local_addr;
u_key.fib_index = fib_index;
kv.key = u_key.as_u64;
- snat_static_mapping_del_sessions (sm, tsm, u_key, addr_only,
- e_addr, e_port);
+ nat44_ei_static_mapping_del_sessions (sm, tsm, u_key, addr_only,
+ e_addr, e_port);
}
}
- fib_table_unlock (fib_index, FIB_PROTOCOL_IP4, nat_fib_src_low);
+ fib_table_unlock (fib_index, FIB_PROTOCOL_IP4, sm->fib_src_low);
if (pool_elts (m->locals))
return 0;
/* Add/delete external address to FIB */
/* *INDENT-OFF* */
- pool_foreach (interface, sm->interfaces,
- ({
+ pool_foreach (interface, sm->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;
- }));
- pool_foreach (interface, sm->output_feature_interfaces,
- ({
+ }
+ 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;
- }));
+ }
/* *INDENT-ON* */
return 0;
}
int
-nat44_add_del_lb_static_mapping (ip4_address_t e_addr, u16 e_port,
- nat_protocol_t proto,
- nat44_lb_addr_port_t * locals, u8 is_add,
- twice_nat_type_t twice_nat, u8 out2in_only,
- u8 * tag, u32 affinity)
+snat_add_static_mapping (ip4_address_t l_addr, ip4_address_t e_addr,
+ u16 l_port, u16 e_port, u32 vrf_id, int addr_only,
+ u32 sw_if_index, nat_protocol_t proto, int is_add,
+ twice_nat_type_t twice_nat, u8 out2in_only, u8 *tag,
+ u8 identity_nat, ip4_address_t pool_addr, int exact)
{
snat_main_t *sm = &snat_main;
- snat_static_mapping_t *m;
- clib_bihash_kv_8_8_t kv, value;
- snat_address_t *a = 0;
+ int rv;
+
+ if (sm->endpoint_dependent)
+ {
+ rv = nat44_ed_add_del_static_mapping (
+ l_addr, e_addr, l_port, e_port, vrf_id, addr_only, sw_if_index, proto,
+ is_add, twice_nat, out2in_only, tag, identity_nat, pool_addr, exact);
+ }
+ else
+ {
+ rv = nat44_ei_add_del_static_mapping (
+ l_addr, e_addr, l_port, e_port, proto, sw_if_index, vrf_id, addr_only,
+ identity_nat, tag, is_add);
+ }
+ return rv;
+}
+
+int
+nat44_add_del_lb_static_mapping (ip4_address_t e_addr, u16 e_port,
+ nat_protocol_t proto,
+ nat44_lb_addr_port_t * locals, u8 is_add,
+ twice_nat_type_t twice_nat, u8 out2in_only,
+ u8 * tag, u32 affinity)
+{
+ snat_main_t *sm = &snat_main;
+ snat_static_mapping_t *m;
+ clib_bihash_kv_8_8_t kv, value;
+ snat_address_t *a = 0;
int i;
nat44_lb_addr_port_t *local;
snat_main_per_thread_data_t *tsm;
uword *bitmap = 0;
if (!sm->endpoint_dependent)
- return VNET_API_ERROR_FEATURE_DISABLED;
+ return VNET_API_ERROR_UNSUPPORTED;
init_nat_k (&kv, e_addr, e_port, 0, proto);
if (clib_bihash_search_8_8 (&sm->static_mapping_by_external, &kv, &value))
locals[i].fib_index =
fib_table_find_or_create_and_lock (FIB_PROTOCOL_IP4,
locals[i].vrf_id,
- nat_fib_src_low);
+ sm->fib_src_low);
if (!out2in_only)
{
init_nat_kv (&kv, locals[i].addr, locals[i].port,
if (sm->num_workers > 1)
{
/* *INDENT-OFF* */
- clib_bitmap_foreach (i, bitmap,
- ({
+ clib_bitmap_foreach (i, bitmap)
+ {
vec_add1(m->workers, i);
- }));
+ }
/* *INDENT-ON* */
}
}
}
/* *INDENT-OFF* */
- pool_foreach (local, m->locals,
- ({
+ pool_foreach (local, m->locals)
+ {
fib_table_unlock (local->fib_index, FIB_PROTOCOL_IP4,
- nat_fib_src_low);
+ sm->fib_src_low);
if (!out2in_only)
{
init_nat_k(& kv, local->addr, local->port, local->fib_index, m->proto);
tsm = vec_elt_at_index (sm->per_thread_data, sm->num_workers);
/* Delete sessions */
- pool_foreach (s, tsm->sessions, {
+ pool_foreach (s, tsm->sessions) {
if (!(is_lb_session (s)))
continue;
nat_free_session_data (sm, s, tsm - sm->per_thread_data, 0);
nat_ed_session_delete (sm, s, tsm - sm->per_thread_data, 1);
- });
- }));
+ }
+ }
/* *INDENT-ON* */
if (m->affinity)
nat_affinity_flush_service (m->affinity_per_service_list_head_index);
return VNET_API_ERROR_INVALID_VALUE;
/* *INDENT-OFF* */
- pool_foreach (local, m->locals,
- ({
+ pool_foreach (local, m->locals)
+ {
if ((local->addr.as_u32 == l_addr.as_u32) && (local->port == l_port) &&
(local->vrf_id == vrf_id))
{
match_local = local;
break;
}
- }));
+ }
/* *INDENT-ON* */
if (is_add)
local->vrf_id = vrf_id;
local->fib_index =
fib_table_find_or_create_and_lock (FIB_PROTOCOL_IP4, vrf_id,
- nat_fib_src_low);
+ sm->fib_src_low);
if (!is_out2in_only_static_mapping (m))
{
return VNET_API_ERROR_UNSPECIFIED;
fib_table_unlock (match_local->fib_index, FIB_PROTOCOL_IP4,
- nat_fib_src_low);
+ sm->fib_src_low);
if (!is_out2in_only_static_mapping (m))
{
/* Delete sessions */
/* *INDENT-OFF* */
- pool_foreach (s, tsm->sessions, {
+ pool_foreach (s, tsm->sessions) {
if (!(is_lb_session (s)))
continue;
nat_free_session_data (sm, s, tsm - sm->per_thread_data, 0);
nat_ed_session_delete (sm, s, tsm - sm->per_thread_data, 1);
- });
+ }
/* *INDENT-ON* */
pool_put (m->locals, match_local);
vec_free (m->workers);
/* *INDENT-OFF* */
- pool_foreach (local, m->locals,
- ({
+ pool_foreach (local, m->locals)
+ {
vec_add1 (locals, local - m->locals);
if (sm->num_workers > 1)
{
sm->worker_in2out_cb (&ip, local->fib_index, 0),
1);
}
- }));
+ }
/* *INDENT-ON* */
ASSERT (vec_len (locals) > 1);
if (sm->num_workers > 1)
{
/* *INDENT-OFF* */
- clib_bitmap_foreach (i, bitmap, ({ vec_add1(m->workers, i); }));
+ clib_bitmap_foreach (i, bitmap) { vec_add1(m->workers, i); }
/* *INDENT-ON* */
}
}
}
if (!a)
- return VNET_API_ERROR_NO_SUCH_ENTRY;
+ {
+ nat_log_err ("no such address");
+ return VNET_API_ERROR_NO_SUCH_ENTRY;
+ }
if (delete_sm)
{
+ ip4_address_t pool_addr = { 0 };
/* *INDENT-OFF* */
- pool_foreach (m, sm->static_mappings,
- ({
+ pool_foreach (m, sm->static_mappings)
+ {
if (m->external_addr.as_u32 == addr.as_u32)
(void) snat_add_static_mapping (m->local_addr, m->external_addr,
m->local_port, m->external_port,
- m->vrf_id, is_addr_only_static_mapping(m), ~0,
- m->proto, 0, m->twice_nat,
- is_out2in_only_static_mapping(m), m->tag, is_identity_static_mapping(m));
- }));
+ m->vrf_id,
+ is_addr_only_static_mapping(m), ~0,
+ m->proto, 0 /* is_add */,
+ m->twice_nat,
+ is_out2in_only_static_mapping(m),
+ m->tag,
+ is_identity_static_mapping(m),
+ pool_addr, 0);
+ }
/* *INDENT-ON* */
}
else
/* Check if address is used in some static mapping */
if (is_snat_address_used_in_static_mapping (sm, addr))
{
- nat_elog_notice ("address used in static mapping");
+ nat_log_err ("address used in static mapping");
return VNET_API_ERROR_UNSPECIFIED;
}
}
if (a->fib_index != ~0)
- fib_table_unlock (a->fib_index, FIB_PROTOCOL_IP4, nat_fib_src_low);
+ fib_table_unlock (a->fib_index, FIB_PROTOCOL_IP4, sm->fib_src_low);
/* Delete sessions using address */
if (a->busy_tcp_ports || a->busy_udp_ports || a->busy_icmp_ports)
{
- /* *INDENT-OFF* */
vec_foreach (tsm, sm->per_thread_data)
- {
- pool_foreach (ses, tsm->sessions, ({
- if (ses->out2in.addr.as_u32 == addr.as_u32)
- {
- nat_free_session_data (sm, ses, tsm - sm->per_thread_data, 0);
- vec_add1 (ses_to_be_removed, ses - tsm->sessions);
- }
- }));
+ {
+ /* *INDENT-OFF* */
+ pool_foreach (ses, tsm->sessions) {
+ if (ses->out2in.addr.as_u32 == addr.as_u32)
+ {
+ nat_free_session_data (sm, ses, tsm - sm->per_thread_data, 0);
+ vec_add1 (ses_to_be_removed, ses - tsm->sessions);
+ }
+ }
+ /* *INDENT-ON* */
- if (sm->endpoint_dependent){
- vec_foreach (ses_index, ses_to_be_removed)
- {
- ses = pool_elt_at_index (tsm->sessions, ses_index[0]);
- nat_ed_session_delete (sm, ses, tsm - sm->per_thread_data, 1);
- }
- }else{
- vec_foreach (ses_index, ses_to_be_removed)
- {
- ses = pool_elt_at_index (tsm->sessions, ses_index[0]);
- nat44_delete_session (sm, ses, tsm - sm->per_thread_data);
- }
+ if (sm->endpoint_dependent)
+ {
+ vec_foreach (ses_index, ses_to_be_removed)
+ {
+ ses = pool_elt_at_index (tsm->sessions, ses_index[0]);
+ nat_ed_session_delete (sm, ses, tsm - sm->per_thread_data, 1);
+ }
+ }
+ else
+ {
+ vec_foreach (ses_index, ses_to_be_removed)
+ {
+ ses = pool_elt_at_index (tsm->sessions, ses_index[0]);
+ nat44_delete_session (sm, ses, tsm - sm->per_thread_data);
+ }
}
- vec_free (ses_to_be_removed);
- }
- /* *INDENT-ON* */
+ vec_free (ses_to_be_removed);
+ }
}
#define _(N, i, n, s) \
/* Delete external address from FIB */
/* *INDENT-OFF* */
- pool_foreach (interface, sm->interfaces,
- ({
+ pool_foreach (interface, sm->interfaces)
+ {
if (nat_interface_is_inside(interface) || sm->out2in_dpo)
continue;
snat_add_del_addr_to_fib(&addr, 32, interface->sw_if_index, 0);
break;
- }));
- pool_foreach (interface, sm->output_feature_interfaces,
- ({
+ }
+ pool_foreach (interface, sm->output_feature_interfaces)
+ {
if (nat_interface_is_inside(interface) || sm->out2in_dpo)
continue;
snat_add_del_addr_to_fib(&addr, 32, interface->sw_if_index, 0);
break;
- }));
+ }
/* *INDENT-ON* */
return 0;
vlib_zero_simple_counter (&sm->counters.hairpinning, sw_if_index);
}
+void
+expire_per_vrf_sessions (u32 fib_index)
+{
+ per_vrf_sessions_t *per_vrf_sessions;
+ snat_main_per_thread_data_t *tsm;
+ snat_main_t *sm = &snat_main;
+
+ /* *INDENT-OFF* */
+ vec_foreach (tsm, sm->per_thread_data)
+ {
+ vec_foreach (per_vrf_sessions, tsm->per_vrf_sessions_vec)
+ {
+ if ((per_vrf_sessions->rx_fib_index == fib_index) ||
+ (per_vrf_sessions->tx_fib_index == fib_index))
+ {
+ per_vrf_sessions->expired = 1;
+ }
+ }
+ }
+ /* *INDENT-ON* */
+}
+
+void
+update_per_vrf_sessions_vec (u32 fib_index, int is_del)
+{
+ snat_main_t *sm = &snat_main;
+ nat_fib_t *fib;
+
+ // we don't care if it is outside/inside fib
+ // we just care about their ref_count
+ // if it reaches 0 sessions should expire
+ // because the fib isn't valid for NAT anymore
+
+ vec_foreach (fib, sm->fibs)
+ {
+ if (fib->fib_index == fib_index)
+ {
+ if (is_del)
+ {
+ fib->ref_count--;
+ if (!fib->ref_count)
+ {
+ vec_del1 (sm->fibs, fib - sm->fibs);
+ expire_per_vrf_sessions (fib_index);
+ }
+ return;
+ }
+ else
+ fib->ref_count++;
+ }
+ }
+ if (!is_del)
+ {
+ vec_add2 (sm->fibs, fib, 1);
+ fib->ref_count = 1;
+ fib->fib_index = fib_index;
+ }
+}
+
int
snat_interface_add_del (u32 sw_if_index, u8 is_inside, int is_del)
{
u32 fib_index = fib_table_get_index_for_sw_if_index (FIB_PROTOCOL_IP4,
sw_if_index);
+ if (!sm->enabled)
+ {
+ nat_log_err ("nat44 is disabled");
+ return VNET_API_ERROR_UNSUPPORTED;
+ }
+
if (sm->out2in_dpo && !is_inside)
- return VNET_API_ERROR_UNSUPPORTED;
+ {
+ nat_log_err ("error unsupported");
+ return VNET_API_ERROR_UNSUPPORTED;
+ }
/* *INDENT-OFF* */
- pool_foreach (i, sm->output_feature_interfaces,
- ({
+ pool_foreach (i, sm->output_feature_interfaces)
+ {
if (i->sw_if_index == sw_if_index)
- return VNET_API_ERROR_VALUE_EXIST;
- }));
+ {
+ nat_log_err ("error interface already configured");
+ return VNET_API_ERROR_VALUE_EXIST;
+ }
+ }
/* *INDENT-ON* */
if (sm->static_mapping_only && !(sm->static_mapping_connection_tracking))
sm->fq_out2in_index =
vlib_frame_queue_main_init (sm->out2in_node_index, NAT_FQ_NELTS);
+ if (sm->endpoint_dependent)
+ update_per_vrf_sessions_vec (fib_index, is_del);
+
if (!is_inside)
{
/* *INDENT-OFF* */
outside_fib->fib_index = fib_index;
}
}
+
feature_set:
/* *INDENT-OFF* */
- pool_foreach (i, sm->interfaces,
- ({
+ pool_foreach (i, sm->interfaces)
+ {
if (i->sw_if_index == sw_if_index)
{
if (is_del)
sw_if_index, 1, 0, 0);
if (!is_inside)
{
- if (sm->endpoint_dependent)
- vnet_feature_enable_disable ("ip4-local",
- "nat44-ed-hairpinning",
- sw_if_index, 1, 0, 0);
- else
- vnet_feature_enable_disable ("ip4-local",
- "nat44-hairpinning",
- sw_if_index, 1, 0, 0);
- }
- }
- else
- {
+ if (!sm->endpoint_dependent)
+ vnet_feature_enable_disable ("ip4-local",
+ "nat44-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;
pool_put (sm->interfaces, i);
if (is_inside)
{
- if (sm->endpoint_dependent)
- vnet_feature_enable_disable ("ip4-local",
- "nat44-ed-hairpinning",
- sw_if_index, 0, 0, 0);
- else
- vnet_feature_enable_disable ("ip4-local",
- "nat44-hairpinning",
- sw_if_index, 0, 0, 0);
- }
- }
- }
- else
- {
- if ((nat_interface_is_inside(i) && is_inside) ||
- (nat_interface_is_outside(i) && !is_inside))
- return 0;
-
- if (sm->num_workers > 1)
- {
- del_feature_name = !is_inside ? "nat44-in2out-worker-handoff" :
- "nat44-out2in-worker-handoff";
- feature_name = "nat44-handoff-classify";
- }
- else if (sm->endpoint_dependent)
- {
- del_feature_name = !is_inside ? "nat-pre-in2out" :
- "nat-pre-out2in";
+ if (!sm->endpoint_dependent)
+ vnet_feature_enable_disable ("ip4-local",
+ "nat44-hairpinning",
+ sw_if_index, 0, 0, 0);
+ }
+ }
+ }
+ else
+ {
+ if ((nat_interface_is_inside (i) && is_inside) ||
+ (nat_interface_is_outside (i) && !is_inside))
+ return 0;
- feature_name = "nat44-ed-classify";
- }
- else
- {
- del_feature_name = !is_inside ? "nat44-in2out" : "nat44-out2in";
- feature_name = "nat44-classify";
- }
+ if (sm->num_workers > 1)
+ {
+ del_feature_name = !is_inside ? "nat44-in2out-worker-handoff" :
+ "nat44-out2in-worker-handoff";
+ feature_name = "nat44-handoff-classify";
+ }
+ else if (sm->endpoint_dependent)
+ {
+ del_feature_name =
+ !is_inside ? "nat-pre-in2out" : "nat-pre-out2in";
+
+ feature_name = "nat44-ed-classify";
+ }
+ else
+ {
+ del_feature_name =
+ !is_inside ? "nat44-in2out" : "nat44-out2in";
+ feature_name = "nat44-classify";
+ }
int rv = ip4_sv_reass_enable_disable_with_refcnt (sw_if_index, 1);
if (rv)
sw_if_index, 1, 0, 0);
if (!is_inside)
{
- if (sm->endpoint_dependent)
- vnet_feature_enable_disable ("ip4-local", "nat44-ed-hairpinning",
- sw_if_index, 0, 0, 0);
- else
- vnet_feature_enable_disable ("ip4-local", "nat44-hairpinning",
- sw_if_index, 0, 0, 0);
- }
- goto set_flags;
- }
+ if (!sm->endpoint_dependent)
+ vnet_feature_enable_disable (
+ "ip4-local", "nat44-hairpinning", sw_if_index, 0, 0, 0);
+ }
+ goto set_flags;
+ }
- goto fib;
+ goto fib;
}
- }));
+ }
/* *INDENT-ON* */
if (is_del)
- return VNET_API_ERROR_NO_SUCH_ENTRY;
+ {
+ nat_log_err ("error interface couldn't be found");
+ return VNET_API_ERROR_NO_SUCH_ENTRY;
+ }
pool_get (sm->interfaces, i);
i->sw_if_index = sw_if_index;
if (is_inside && !sm->out2in_dpo)
{
- if (sm->endpoint_dependent)
- vnet_feature_enable_disable ("ip4-local", "nat44-ed-hairpinning",
- sw_if_index, 1, 0, 0);
- else
+ if (!sm->endpoint_dependent)
vnet_feature_enable_disable ("ip4-local", "nat44-hairpinning",
sw_if_index, 1, 0, 0);
}
vec_foreach (ap, sm->addresses)
snat_add_del_addr_to_fib(&ap->addr, 32, sw_if_index, !is_del);
- pool_foreach (m, sm->static_mappings,
- ({
+ pool_foreach (m, sm->static_mappings)
+ {
if (!(is_addr_only_static_mapping(m)) || (m->local_addr.as_u32 == m->external_addr.as_u32))
continue;
snat_add_del_addr_to_fib(&m->external_addr, 32, sw_if_index, !is_del);
- }));
+ }
/* *INDENT-ON* */
return 0;
u32 fib_index = fib_table_get_index_for_sw_if_index (FIB_PROTOCOL_IP4,
sw_if_index);
+ if (!sm->enabled)
+ {
+ nat_log_err ("nat44 is disabled");
+ return VNET_API_ERROR_UNSUPPORTED;
+ }
if (sm->static_mapping_only && !(sm->static_mapping_connection_tracking))
- return VNET_API_ERROR_UNSUPPORTED;
+ {
+ nat_log_err ("error unsupported");
+ return VNET_API_ERROR_UNSUPPORTED;
+ }
/* *INDENT-OFF* */
- pool_foreach (i, sm->interfaces,
- ({
+ pool_foreach (i, sm->interfaces)
+ {
if (i->sw_if_index == sw_if_index)
- return VNET_API_ERROR_VALUE_EXIST;
- }));
+ {
+ nat_log_err ("error interface already configured");
+ return VNET_API_ERROR_VALUE_EXIST;
+ }
+ }
/* *INDENT-ON* */
+ if (sm->endpoint_dependent)
+ update_per_vrf_sessions_vec (fib_index, is_del);
+
if (!is_inside)
{
/* *INDENT-OFF* */
!is_del);
if (rv)
return rv;
- vnet_feature_enable_disable ("ip4-unicast", "nat44-ed-hairpin-dst",
- sw_if_index, !is_del, 0, 0);
- vnet_feature_enable_disable ("ip4-output", "nat44-ed-hairpin-src",
- sw_if_index, !is_del, 0, 0);
}
else
{
return rv;
vnet_feature_enable_disable ("ip4-unicast", "nat-pre-out2in",
sw_if_index, !is_del, 0, 0);
- vnet_feature_enable_disable ("ip4-output", "nat44-ed-in2out-output",
+ vnet_feature_enable_disable ("ip4-output", "nat-pre-in2out-output",
sw_if_index, !is_del, 0, 0);
}
else
vlib_frame_queue_main_init (sm->out2in_node_index, 0);
/* *INDENT-OFF* */
- pool_foreach (i, sm->output_feature_interfaces,
- ({
+ pool_foreach (i, sm->output_feature_interfaces)
+ {
if (i->sw_if_index == sw_if_index)
{
if (is_del)
goto fib;
}
- }));
+ }
/* *INDENT-ON* */
if (is_del)
- return VNET_API_ERROR_NO_SUCH_ENTRY;
+ {
+ nat_log_err ("error interface couldn't be found");
+ return VNET_API_ERROR_NO_SUCH_ENTRY;
+ }
pool_get (sm->output_feature_interfaces, i);
i->sw_if_index = sw_if_index;
vec_foreach (ap, sm->addresses)
snat_add_del_addr_to_fib(&ap->addr, 32, sw_if_index, !is_del);
- pool_foreach (m, sm->static_mappings,
- ({
+ pool_foreach (m, sm->static_mappings)
+ {
if (!((is_addr_only_static_mapping(m))) || (m->local_addr.as_u32 == m->external_addr.as_u32))
continue;
snat_add_del_addr_to_fib(&m->external_addr, 32, sw_if_index, !is_del);
- }));
+ }
/* *INDENT-ON* */
return 0;
vec_free (sm->workers);
/* *INDENT-OFF* */
- clib_bitmap_foreach (i, bitmap,
- ({
+ clib_bitmap_foreach (i, bitmap)
+ {
vec_add1(sm->workers, i);
sm->per_thread_data[sm->first_worker_index + i].snat_thread_index = j;
sm->per_thread_data[sm->first_worker_index + i].thread_index = i;
j++;
- }));
+ }
/* *INDENT-ON* */
sm->port_per_thread = (0xffff - 1024) / _vec_len (sm->workers);
}
static void
-snat_update_outside_fib (u32 sw_if_index, u32 new_fib_index,
+snat_update_outside_fib (ip4_main_t * im, uword opaque,
+ u32 sw_if_index, u32 new_fib_index,
u32 old_fib_index)
{
snat_main_t *sm = &snat_main;
u8 is_add = 1;
u8 match = 0;
- if (new_fib_index == old_fib_index)
- return;
-
- if (!vec_len (sm->outside_fibs))
- return;
+ if (!sm->enabled || (new_fib_index == old_fib_index)
+ || (!vec_len (sm->outside_fibs)))
+ {
+ return;
+ }
/* *INDENT-OFF* */
- pool_foreach (i, sm->interfaces,
- ({
+ pool_foreach (i, sm->interfaces)
+ {
if (i->sw_if_index == sw_if_index)
{
if (!(nat_interface_is_outside (i)))
return;
match = 1;
}
- }));
+ }
- pool_foreach (i, sm->output_feature_interfaces,
- ({
+ pool_foreach (i, sm->output_feature_interfaces)
+ {
if (i->sw_if_index == sw_if_index)
{
if (!(nat_interface_is_outside (i)))
return;
match = 1;
}
- }));
+ }
/* *INDENT-ON* */
if (!match)
}
static void
-snat_ip4_table_bind (ip4_main_t * im,
- uword opaque,
- u32 sw_if_index, u32 new_fib_index, u32 old_fib_index)
-{
- snat_update_outside_fib (sw_if_index, new_fib_index, old_fib_index);
-}
+snat_update_outside_fib (ip4_main_t * im, uword opaque,
+ u32 sw_if_index, u32 new_fib_index,
+ u32 old_fib_index);
static void
snat_ip4_add_del_interface_address_cb (ip4_main_t * im,
u32 address_length,
u32 if_address_index, u32 is_delete);
-static int
-nat_alloc_addr_and_port_default (snat_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);
-
void
test_key_calc_split ()
{
}
static clib_error_t *
-snat_init (vlib_main_t * vm)
+nat_ip_table_add_del (vnet_main_t * vnm, u32 table_id, u32 is_add)
{
snat_main_t *sm = &snat_main;
- clib_error_t *error = 0;
- ip4_main_t *im = &ip4_main;
- ip_lookup_main_t *lm = &im->lookup_main;
- uword *p;
- vlib_thread_registration_t *tr;
- vlib_thread_main_t *tm = vlib_get_thread_main ();
- uword *bitmap = 0;
- u32 i;
- ip4_add_del_interface_address_callback_t cb4;
+ u32 fib_index;
+
+ if (sm->endpoint_dependent)
+ {
+ // TODO: consider removing all NAT interfaces
+ if (!is_add)
+ {
+ fib_index = ip4_fib_index_from_table_id (table_id);
+ if (fib_index != ~0)
+ expire_per_vrf_sessions (fib_index);
+ }
+ }
+ return 0;
+}
+
+VNET_IP_TABLE_ADD_DEL_FUNCTION (nat_ip_table_add_del);
+
+void
+nat44_set_node_indexes (snat_main_t * sm, vlib_main_t * vm)
+{
vlib_node_t *node;
- sm->vnet_main = vnet_get_main ();
- sm->ip4_main = im;
- sm->ip4_lookup_main = lm;
- sm->api_main = vlibapi_get_main ();
- sm->first_worker_index = 0;
- sm->num_workers = 0;
- sm->workers = 0;
- sm->port_per_thread = 0xffff - 1024;
- sm->fq_in2out_index = ~0;
- sm->fq_in2out_output_index = ~0;
- sm->fq_out2in_index = ~0;
+ node = vlib_get_node_by_name (vm, (u8 *) "nat44-out2in");
+ sm->ei_out2in_node_index = node->index;
+ node = vlib_get_node_by_name (vm, (u8 *) "nat44-in2out");
+ sm->ei_in2out_node_index = node->index;
+ node = vlib_get_node_by_name (vm, (u8 *) "nat44-in2out-output");
+ sm->ei_in2out_output_node_index = node->index;
- sm->alloc_addr_and_port = nat_alloc_addr_and_port_default;
- sm->addr_and_port_alloc_alg = NAT_ADDR_AND_PORT_ALLOC_ALG_DEFAULT;
- sm->forwarding_enabled = 0;
- sm->log_class = vlib_log_register_class ("nat", 0);
- sm->log_level = SNAT_LOG_ERROR;
- sm->mss_clamping = 0;
+ node = vlib_get_node_by_name (vm, (u8 *) "nat44-ed-out2in");
+ sm->ed_out2in_node_index = node->index;
+ node = vlib_get_node_by_name (vm, (u8 *) "nat44-ed-in2out");
+ sm->ed_in2out_node_index = node->index;
+ node = vlib_get_node_by_name (vm, (u8 *) "nat44-ed-in2out-output");
+ sm->ed_in2out_output_node_index = node->index;
node = vlib_get_node_by_name (vm, (u8 *) "error-drop");
sm->error_node_index = node->index;
-
node = vlib_get_node_by_name (vm, (u8 *) "nat-pre-in2out");
sm->pre_in2out_node_index = node->index;
node = vlib_get_node_by_name (vm, (u8 *) "nat-pre-out2in");
sm->pre_out2in_node_index = node->index;
-
node = vlib_get_node_by_name (vm, (u8 *) "nat-pre-in2out");
sm->pre_in2out_node_index = node->index;
-
node = vlib_get_node_by_name (vm, (u8 *) "nat-pre-out2in");
sm->pre_out2in_node_index = node->index;
-
- node = vlib_get_node_by_name (vm, (u8 *) "nat44-in2out");
- sm->in2out_node_index = node->index;
- node = vlib_get_node_by_name (vm, (u8 *) "nat44-in2out-output");
- sm->in2out_output_node_index = node->index;
node = vlib_get_node_by_name (vm, (u8 *) "nat44-in2out-fast");
sm->in2out_fast_node_index = node->index;
node = vlib_get_node_by_name (vm, (u8 *) "nat44-in2out-slowpath");
sm->in2out_slowpath_node_index = node->index;
node = vlib_get_node_by_name (vm, (u8 *) "nat44-in2out-output-slowpath");
sm->in2out_slowpath_output_node_index = node->index;
-
- node = vlib_get_node_by_name (vm, (u8 *) "nat44-ed-in2out");
- sm->ed_in2out_node_index = node->index;
node = vlib_get_node_by_name (vm, (u8 *) "nat44-ed-in2out-slowpath");
sm->ed_in2out_slowpath_node_index = node->index;
-
- node = vlib_get_node_by_name (vm, (u8 *) "nat44-out2in");
- sm->out2in_node_index = node->index;
node = vlib_get_node_by_name (vm, (u8 *) "nat44-out2in-fast");
sm->out2in_fast_node_index = node->index;
-
- node = vlib_get_node_by_name (vm, (u8 *) "nat44-ed-out2in");
- sm->ed_out2in_node_index = node->index;
node = vlib_get_node_by_name (vm, (u8 *) "nat44-ed-out2in-slowpath");
sm->ed_out2in_slowpath_node_index = node->index;
-
node = vlib_get_node_by_name (vm, (u8 *) "nat44-hairpinning");
sm->hairpinning_node_index = node->index;
node = vlib_get_node_by_name (vm, (u8 *) "nat44-hairpin-dst");
sm->hairpin_dst_node_index = node->index;
node = vlib_get_node_by_name (vm, (u8 *) "nat44-hairpin-src");
sm->hairpin_src_node_index = node->index;
- node = vlib_get_node_by_name (vm, (u8 *) "nat44-ed-hairpinning");
- sm->ed_hairpinning_node_index = node->index;
- node = vlib_get_node_by_name (vm, (u8 *) "nat44-ed-hairpin-dst");
- sm->ed_hairpin_dst_node_index = node->index;
- node = vlib_get_node_by_name (vm, (u8 *) "nat44-ed-hairpin-src");
- sm->ed_hairpin_src_node_index = node->index;
-
- p = hash_get_mem (tm->thread_registrations_by_name, "workers");
- if (p)
- {
- tr = (vlib_thread_registration_t *) p[0];
- if (tr)
- {
- sm->num_workers = tr->count;
- sm->first_worker_index = tr->first_index;
- }
- }
-
- vec_validate (sm->per_thread_data, tm->n_vlib_mains - 1);
+}
- /* Use all available workers by default */
- if (sm->num_workers > 1)
- {
- for (i = 0; i < sm->num_workers; i++)
- bitmap = clib_bitmap_set (bitmap, i, 1);
- snat_set_workers (bitmap);
- clib_bitmap_free (bitmap);
- }
- else
- {
- sm->per_thread_data[0].snat_thread_index = 0;
- }
+#define nat_init_simple_counter(c, n, sn) \
+do \
+ { \
+ c.name = n; \
+ c.stat_segment_name = sn; \
+ vlib_validate_simple_counter (&c, 0); \
+ vlib_zero_simple_counter (&c, 0); \
+ } while (0);
- error = snat_api_init (vm, sm);
- if (error)
- return error;
+static clib_error_t *
+nat_init (vlib_main_t * vm)
+{
+ snat_main_t *sm = &snat_main;
+ 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;
- /* Set up the interface address add/del callback */
- cb4.function = snat_ip4_add_del_interface_address_cb;
- cb4.function_opaque = 0;
+ clib_memset (sm, 0, sizeof (*sm));
- vec_add1 (im->add_del_interface_address_callbacks, cb4);
+ // required
+ sm->vnet_main = vnet_get_main ();
+ // convenience
+ sm->ip4_main = &ip4_main;
+ sm->api_main = vlibapi_get_main ();
+ sm->ip4_lookup_main = &ip4_main.lookup_main;
- cb4.function = nat_ip4_add_del_addr_only_sm_cb;
- cb4.function_opaque = 0;
+ // frame queue indices used for handoff
+ sm->fq_out2in_index = ~0;
+ sm->fq_in2out_index = ~0;
+ sm->fq_in2out_output_index = ~0;
- vec_add1 (im->add_del_interface_address_callbacks, cb4);
+ sm->log_level = SNAT_LOG_ERROR;
- nat_dpo_module_init ();
+ nat44_set_node_indexes (sm, vm);
+ sm->log_class = vlib_log_register_class ("nat", 0);
+ nat_ipfix_logging_init (vm);
- /* Init counters */
- sm->total_users.name = "total-users";
- sm->total_users.stat_segment_name = "/nat44/total-users";
- vlib_validate_simple_counter (&sm->total_users, 0);
- vlib_zero_simple_counter (&sm->total_users, 0);
- sm->total_sessions.name = "total-sessions";
- sm->total_sessions.stat_segment_name = "/nat44/total-sessions";
- vlib_validate_simple_counter (&sm->total_sessions, 0);
- vlib_zero_simple_counter (&sm->total_sessions, 0);
- sm->user_limit_reached.name = "user-limit-reached";
- sm->user_limit_reached.stat_segment_name = "/nat44/user-limit-reached";
- vlib_validate_simple_counter (&sm->user_limit_reached, 0);
- vlib_zero_simple_counter (&sm->user_limit_reached, 0);
+ nat_init_simple_counter (sm->total_users, "total-users",
+ "/nat44/total-users");
+ nat_init_simple_counter (sm->total_sessions, "total-sessions",
+ "/nat44/total-sessions");
+ nat_init_simple_counter (sm->user_limit_reached, "user-limit-reached",
+ "/nat44/user-limit-reached");
#define _(x) \
sm->counters.fastpath.in2out.x.name = #x; \
sm->counters.hairpinning.name = "hairpinning";
sm->counters.hairpinning.stat_segment_name = "/nat44/hairpinning";
- /* Init IPFIX logging */
- snat_ipfix_logging_init (vm);
-
- /* Init NAT64 */
- error = nat64_init (vm);
- if (error)
- return error;
+ p = hash_get_mem (tm->thread_registrations_by_name, "workers");
+ if (p)
+ {
+ tr = (vlib_thread_registration_t *) p[0];
+ if (tr)
+ {
+ sm->num_workers = tr->count;
+ sm->first_worker_index = tr->first_index;
+ }
+ }
+ num_threads = tm->n_vlib_mains - 1;
+ sm->port_per_thread = 0xffff - 1024;
+ vec_validate (sm->per_thread_data, num_threads);
- ip4_table_bind_callback_t cbt4 = {
- .function = snat_ip4_table_bind,
- };
- vec_add1 (ip4_main.table_bind_callbacks, cbt4);
+ /* Use all available workers by default */
+ if (sm->num_workers > 1)
+ {
+
+ for (i = 0; i < sm->num_workers; i++)
+ bitmap = clib_bitmap_set (bitmap, i, 1);
+ snat_set_workers (bitmap);
+ clib_bitmap_free (bitmap);
+ }
+ else
+ sm->per_thread_data[0].snat_thread_index = 0;
+
+ /* callbacks to call when interface address changes. */
+ cbi.function = snat_ip4_add_del_interface_address_cb;
+ vec_add1 (sm->ip4_main->add_del_interface_address_callbacks, cbi);
+ cbi.function = nat_ip4_add_del_addr_only_sm_cb;
+ vec_add1 (sm->ip4_main->add_del_interface_address_callbacks, cbi);
+
+ /* callbacks to call when interface to table biding changes */
+ cbt.function = snat_update_outside_fib;
+ vec_add1 (sm->ip4_main->table_bind_callbacks, cbt);
+
+ sm->fib_src_low =
+ fib_source_allocate ("nat-low", FIB_SOURCE_PRIORITY_LOW,
+ FIB_SOURCE_BH_SIMPLE);
+ sm->fib_src_hi =
+ fib_source_allocate ("nat-hi", FIB_SOURCE_PRIORITY_HI,
+ FIB_SOURCE_BH_SIMPLE);
+
+ /* used only by out2in-dpo feature */
+ nat_dpo_module_init ();
- nat_fib_src_hi = fib_source_allocate ("nat-hi",
- FIB_SOURCE_PRIORITY_HI,
- FIB_SOURCE_BH_SIMPLE);
- nat_fib_src_low = fib_source_allocate ("nat-low",
- FIB_SOURCE_PRIORITY_LOW,
- FIB_SOURCE_BH_SIMPLE);
+ nat_affinity_init (vm);
+ nat_ha_init (vm, sm->num_workers, num_threads);
test_key_calc_split ();
- return error;
+ return nat44_api_hookup (vm);
+}
+
+VLIB_INIT_FUNCTION (nat_init);
+
+static int
+nat44_ed_plugin_enable (nat44_config_t c)
+{
+ snat_main_t *sm = &snat_main;
+
+ if (c.static_mapping_only && !c.connection_tracking)
+ {
+ nat_log_err ("unsupported combination of configuration");
+ return 1;
+ }
+
+ // nat44 feature configuration
+ sm->endpoint_dependent = c.endpoint_dependent;
+ sm->static_mapping_only = c.static_mapping_only;
+ sm->static_mapping_connection_tracking = c.connection_tracking;
+
+ // EI only feature (could break ED)
+ 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));
+
+ if (!c.users)
+ c.users = 1024;
+
+ // EI only feature (could break ED)
+ sm->max_users_per_thread = c.users;
+ sm->user_buckets = nat_calc_bihash_buckets (c.users);
+
+ if (!c.sessions)
+ c.sessions = 10 * 1024;
+
+ sm->max_translations_per_thread = c.sessions;
+ sm->translation_buckets = nat_calc_bihash_buckets (c.sessions);
+
+ // ED only feature
+ vec_add1 (sm->max_translations_per_fib, sm->max_translations_per_thread);
+
+ // EI only feature (could break ED)
+ sm->max_translations_per_user
+ = c.user_sessions ? c.user_sessions : sm->max_translations_per_thread;
+
+ 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);
+
+ 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);
+
+ sm->worker_in2out_cb = nat44_ed_get_worker_in2out_cb;
+ sm->worker_out2in_cb = nat44_ed_get_worker_out2in_cb;
+
+ sm->in2out_node_index = sm->ed_in2out_node_index;
+ sm->out2in_node_index = sm->ed_out2in_node_index;
+
+ sm->in2out_output_node_index = sm->ed_in2out_output_node_index;
+
+ if (sm->pat)
+ {
+ sm->icmp_match_in2out_cb = NULL;
+ sm->icmp_match_out2in_cb = NULL;
+ }
+ else
+ {
+ sm->icmp_match_in2out_cb = icmp_match_in2out_fast;
+ sm->icmp_match_out2in_cb = icmp_match_out2in_fast;
+ }
+
+ nat44_ed_db_init (sm->max_translations_per_thread, sm->translation_buckets,
+ sm->user_buckets);
+
+ nat_affinity_enable ();
+
+ nat_reset_timeouts (&sm->timeouts);
+
+ // 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);
+
+ sm->enabled = 1;
+ sm->rconfig = c;
+
+ return 0;
+}
+
+int
+nat44_plugin_enable (nat44_config_t c)
+{
+ fail_if_enabled ();
+
+ // c.static_mapping_only + c.connection_tracking
+ // - supported in NAT EI & NAT ED
+ // c.out2in_dpo, c.static_mapping_only
+ // - supported in NAT EI
+
+ if (c.endpoint_dependent)
+ {
+ if (c.out2in_dpo || c.users || c.user_sessions)
+ {
+ nat_log_err ("unsupported combination of configuration");
+ return 1;
+ }
+ return nat44_ed_plugin_enable (c);
+ }
+
+ // separation:
+ // for now just copy variables
+
+ nat44_ei_config_t ei_c = {
+ .inside_vrf = c.inside_vrf,
+ .outside_vrf = c.outside_vrf,
+ .users = c.users,
+ .sessions = c.sessions,
+ .user_sessions = c.user_sessions,
+ .out2in_dpo = c.out2in_dpo,
+ .static_mapping_only = c.static_mapping_only,
+ .connection_tracking = c.connection_tracking,
+ };
+
+ return nat44_ei_plugin_enable (ei_c);
+}
+
+void
+nat44_addresses_free (snat_address_t ** addresses)
+{
+ snat_address_t *ap;
+ /* *INDENT-OFF* */
+ vec_foreach (ap, *addresses)
+ {
+ #define _(N, i, n, s) \
+ vec_free (ap->busy_##n##_ports_per_thread);
+ foreach_nat_protocol
+ #undef _
+ }
+ /* *INDENT-ON* */
+ vec_free (*addresses);
+ *addresses = 0;
}
-VLIB_INIT_FUNCTION (snat_init);
+static int
+nat44_ed_plugin_disable ()
+{
+ snat_main_t *sm = &snat_main;
+ snat_interface_t *i, *vec;
+ int error = 0;
+
+ // first unregister all nodes from interfaces
+ vec = vec_dup (sm->interfaces);
+ /* *INDENT-OFF* */
+ 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);
+
+ if (error)
+ {
+ nat_log_err ("error occurred while removing interface %u",
+ i->sw_if_index);
+ }
+ }
+ /* *INDENT-ON* */
+ vec_free (vec);
+ sm->interfaces = 0;
+
+ vec = vec_dup (sm->output_feature_interfaces);
+ /* *INDENT-OFF* */
+ vec_foreach (i, vec)
+ {
+ 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);
+ }
+ }
+ /* *INDENT-ON* */
+ vec_free (vec);
+ sm->output_feature_interfaces = 0;
+
+ vec_free (sm->max_translations_per_fib);
+
+ nat44_ed_db_free ();
+
+ nat44_addresses_free (&sm->addresses);
+ nat44_addresses_free (&sm->twice_nat_addresses);
+
+
+ vec_free (sm->to_resolve);
+ vec_free (sm->auto_add_sw_if_indices);
+ vec_free (sm->auto_add_sw_if_indices_twice_nat);
+
+ sm->to_resolve = 0;
+ sm->auto_add_sw_if_indices = 0;
+ sm->auto_add_sw_if_indices_twice_nat = 0;
+
+ sm->forwarding_enabled = 0;
+
+ sm->enabled = 0;
+ clib_memset (&sm->rconfig, 0, sizeof (sm->rconfig));
+
+ return 0;
+}
+
+int
+nat44_plugin_disable ()
+{
+ snat_main_t *sm = &snat_main;
+
+ fail_if_disabled ();
+
+ if (sm->endpoint_dependent)
+ return nat44_ed_plugin_disable ();
+ return nat44_ei_plugin_disable ();
+}
void
-snat_free_outside_address_and_port (snat_address_t * addresses,
- u32 thread_index,
- ip4_address_t * addr,
+snat_free_outside_address_and_port (snat_address_t *addresses,
+ u32 thread_index, ip4_address_t *addr,
u16 port, nat_protocol_t protocol)
{
snat_address_t *a;
}
}
-static int
-nat_set_outside_address_and_port (snat_address_t * addresses,
- u32 thread_index, ip4_address_t addr,
- u16 port, nat_protocol_t protocol)
+int
+nat_set_outside_address_and_port (snat_address_t *addresses, u32 thread_index,
+ ip4_address_t addr, u16 port,
+ nat_protocol_t protocol)
{
snat_address_t *a = 0;
u32 address_index;
u8 * is_addr_only,
twice_nat_type_t * twice_nat,
lb_nat_type_t * lb, ip4_address_t * ext_host_addr,
- u8 * is_identity_nat)
+ u8 * is_identity_nat, snat_static_mapping_t ** out)
{
clib_bihash_kv_8_8_t kv, value;
+ clib_bihash_8_8_t *mapping_hash;
snat_static_mapping_t *m;
- clib_bihash_8_8_t *mapping_hash = &sm->static_mapping_by_local;
u32 rand, lo = 0, hi, mid, *tmp = 0, i;
- u8 backend_index;
nat44_lb_addr_port_t *local;
+ u8 backend_index;
- if (by_external)
+ if (!by_external)
{
- mapping_hash = &sm->static_mapping_by_external;
- init_nat_k (&kv, match_addr, match_port, 0, match_protocol);
+ mapping_hash = &sm->static_mapping_by_local;
+ init_nat_k (&kv, match_addr, match_port, match_fib_index,
+ match_protocol);
if (clib_bihash_search_8_8 (mapping_hash, &kv, &value))
{
/* Try address only mapping */
- init_nat_k (&kv, match_addr, 0, 0, 0);
+ init_nat_k (&kv, match_addr, 0, match_fib_index, 0);
if (clib_bihash_search_8_8 (mapping_hash, &kv, &value))
return 1;
}
-
}
else
{
- init_nat_k (&kv, match_addr, match_port, match_fib_index,
- match_protocol);
+ mapping_hash = &sm->static_mapping_by_external;
+ init_nat_k (&kv, match_addr, match_port, 0, match_protocol);
if (clib_bihash_search_8_8 (mapping_hash, &kv, &value))
{
/* Try address only mapping */
- init_nat_k (&kv, match_addr, 0, match_fib_index, 0);
+ init_nat_k (&kv, match_addr, 0, 0, 0);
if (clib_bihash_search_8_8 (mapping_hash, &kv, &value))
return 1;
}
-
}
m = pool_elt_at_index (sm->static_mappings, value.value);
{
u32 thread_index = vlib_get_thread_index ();
/* *INDENT-OFF* */
- pool_foreach_index (i, m->locals,
- ({
+ pool_foreach_index (i, m->locals)
+ {
local = pool_elt_at_index (m->locals, i);
ip4_header_t ip = {
{
vec_add1 (tmp, i);
}
- }));
+ }
/* *INDENT-ON* */
ASSERT (vec_len (tmp) != 0);
}
else
{
/* *INDENT-OFF* */
- pool_foreach_index (i, m->locals,
- ({
+ pool_foreach_index (i, m->locals)
+ {
vec_add1 (tmp, i);
- }));
+ }
/* *INDENT-ON* */
}
hi = vec_len (tmp) - 1;
if (PREDICT_FALSE (is_identity_nat != 0))
*is_identity_nat = is_identity_static_mapping (m);
- return 0;
-}
-
-int
-snat_alloc_outside_address_and_port (snat_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;
-
- return sm->alloc_addr_and_port (addresses, fib_index, thread_index, proto,
- addr, port, port_per_thread,
- snat_thread_index);
-}
-
-static int
-nat_alloc_addr_and_port_default (snat_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;
- u32 portnum;
+ if (out != 0)
+ *out = m;
- for (i = 0; i < vec_len (addresses); i++)
- {
- a = addresses + i;
- switch (proto)
- {
-#define _(N, j, n, s) \
- case NAT_PROTOCOL_##N: \
- if (a->busy_##n##_ports_per_thread[thread_index] < port_per_thread) \
- { \
- if (a->fib_index == fib_index) \
- { \
- while (1) \
- { \
- portnum = (port_per_thread * \
- snat_thread_index) + \
- snat_random_port(0, port_per_thread - 1) + 1024; \
- if (a->busy_##n##_port_refcounts[portnum]) \
- continue; \
- --a->busy_##n##_port_refcounts[portnum]; \
- a->busy_##n##_ports_per_thread[thread_index]++; \
- a->busy_##n##_ports++; \
- *addr = a->addr; \
- *port = clib_host_to_net_u16(portnum); \
- return 0; \
- } \
- } \
- else if (a->fib_index == ~0) \
- { \
- ga = a; \
- } \
- } \
- break;
- foreach_nat_protocol
-#undef _
- default:
- nat_elog_info ("unknown protocol");
- return 1;
- }
-
- }
-
- if (ga)
- {
- a = ga;
- switch (proto)
- {
-#define _(N, j, n, s) \
- case NAT_PROTOCOL_##N: \
- while (1) \
- { \
- portnum = (port_per_thread * \
- snat_thread_index) + \
- snat_random_port(0, port_per_thread - 1) + 1024; \
- if (a->busy_##n##_port_refcounts[portnum]) \
- continue; \
- ++a->busy_##n##_port_refcounts[portnum]; \
- a->busy_##n##_ports_per_thread[thread_index]++; \
- a->busy_##n##_ports++; \
- *addr = a->addr; \
- *port = clib_host_to_net_u16(portnum); \
- return 0; \
- }
- break;
- foreach_nat_protocol
-#undef _
- default:
- nat_elog_info ("unknown protocol");
- return 1;
- }
- }
-
- /* Totally out of translations to use... */
- snat_ipfix_logging_addresses_exhausted (thread_index, 0);
- return 1;
-}
-
-static int
-nat_alloc_addr_and_port_mape (snat_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;
- u16 m, ports, portnum, A, j;
- m = 16 - (sm->psid_offset + sm->psid_length);
- ports = (1 << (16 - sm->psid_length)) - (1 << m);
-
- if (!vec_len (addresses))
- goto exhausted;
-
- switch (proto)
- {
-#define _(N, i, n, s) \
- case NAT_PROTOCOL_##N: \
- if (a->busy_##n##_ports < ports) \
- { \
- 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)); \
- if (a->busy_##n##_port_refcounts[portnum]) \
- continue; \
- ++a->busy_##n##_port_refcounts[portnum]; \
- a->busy_##n##_ports++; \
- *addr = a->addr; \
- *port = clib_host_to_net_u16 (portnum); \
- return 0; \
- } \
- } \
- break;
- foreach_nat_protocol
-#undef _
- default:
- nat_elog_info ("unknown protocol");
- return 1;
- }
-
-exhausted:
- /* Totally out of translations to use... */
- snat_ipfix_logging_addresses_exhausted (thread_index, 0);
- return 1;
-}
-
-static int
-nat_alloc_addr_and_port_range (snat_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;
- u16 portnum, ports;
-
- ports = sm->end_port - sm->start_port + 1;
-
- if (!vec_len (addresses))
- goto exhausted;
-
- switch (proto)
- {
-#define _(N, i, n, s) \
- case NAT_PROTOCOL_##N: \
- if (a->busy_##n##_ports < ports) \
- { \
- while (1) \
- { \
- portnum = snat_random_port(sm->start_port, sm->end_port); \
- if (a->busy_##n##_port_refcounts[portnum]) \
- continue; \
- ++a->busy_##n##_port_refcounts[portnum]; \
- a->busy_##n##_ports++; \
- *addr = a->addr; \
- *port = clib_host_to_net_u16 (portnum); \
- return 0; \
- } \
- } \
- break;
- foreach_nat_protocol
-#undef _
- default:
- nat_elog_info ("unknown protocol");
- return 1;
- }
-
-exhausted:
- /* Totally out of translations to use... */
- snat_ipfix_logging_addresses_exhausted (thread_index, 0);
- return 1;
+ return 0;
}
void
nat44_add_del_address_dpo (ip4_address_t addr, u8 is_add)
-{
- 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, nat_fib_src_hi,
- FIB_ENTRY_FLAG_EXCLUSIVE, &dpo_v4);
- dpo_reset (&dpo_v4);
- }
- else
- {
- fib_table_entry_special_remove (0, &pfx, nat_fib_src_hi);
- }
-}
-
-u8 *
-format_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_snat_key, v->key, v->value);
-
- return s;
-}
-
-u8 *
-format_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_snat_key, v->key, v->value);
-
- return s;
-}
-
-u8 *
-format_user_kvp (u8 * s, va_list * args)
-{
- clib_bihash_kv_8_8_t *v = va_arg (*args, clib_bihash_kv_8_8_t *);
- snat_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_ed_session_kvp (u8 * s, va_list * args)
-{
- clib_bihash_kv_16_8_t *v = va_arg (*args, clib_bihash_kv_16_8_t *);
-
- u8 proto;
- u16 r_port, l_port;
- ip4_address_t l_addr, r_addr;
- u32 fib_index;
-
- split_ed_kv (v, &l_addr, &r_addr, &proto, &fib_index, &l_port, &r_port);
- s =
- format (s,
- "local %U:%d remote %U:%d proto %U fib %d thread-index %u session-index %u",
- format_ip4_address, &l_addr, clib_net_to_host_u16 (l_port),
- format_ip4_address, &r_addr, clib_net_to_host_u16 (r_port),
- format_ip_protocol, proto, fib_index,
- ed_value_get_session_index (v), ed_value_get_thread_index (v));
-
- return s;
-}
-
-static u32
-snat_get_worker_in2out_cb (ip4_header_t * ip0, u32 rx_fib_index0,
- u8 is_output)
{
snat_main_t *sm = &snat_main;
- u32 next_worker_index = 0;
- u32 hash;
-
- 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);
-
- 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)];
-
- return next_worker_index;
-}
-
-static u32
-snat_get_worker_out2in_cb (vlib_buffer_t * b, ip4_header_t * ip0,
- u32 rx_fib_index0, u8 is_output)
-{
- snat_main_t *sm = &snat_main;
- udp_header_t *udp;
- u16 port;
- clib_bihash_kv_8_8_t kv, value;
- snat_static_mapping_t *m;
- u32 proto;
- u32 next_worker_index = 0;
-
- /* first try static mappings without port */
- if (PREDICT_FALSE (pool_elts (sm->static_mappings)))
- {
- 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];
- }
- }
-
- 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 ();
- }
-
- if (PREDICT_FALSE (ip0->protocol == IP_PROTOCOL_ICMP))
- {
- icmp46_header_t *icmp = (icmp46_header_t *) udp;
- icmp_echo_header_t *echo = (icmp_echo_header_t *) (icmp + 1);
- if (!icmp_type_is_error_message
- (vnet_buffer (b)->ip.reass.icmp_type_or_tcp_flags))
- port = vnet_buffer (b)->ip.reass.l4_src_port;
- else
- {
- /* if error message, then it's not fragmented and we can access it */
- ip4_header_t *inner_ip = (ip4_header_t *) (echo + 1);
- proto = ip_proto_to_nat_proto (inner_ip->protocol);
- void *l4_header = ip4_next_header (inner_ip);
- switch (proto)
- {
- case NAT_PROTOCOL_ICMP:
- icmp = (icmp46_header_t *) l4_header;
- echo = (icmp_echo_header_t *) (icmp + 1);
- port = echo->identifier;
- break;
- case NAT_PROTOCOL_UDP:
- case NAT_PROTOCOL_TCP:
- port = ((tcp_udp_header_t *) l4_header)->src_port;
- break;
- default:
- return vlib_get_thread_index ();
- }
- }
- }
+ 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,
+ };
- /* try static mappings with port */
- if (PREDICT_FALSE (pool_elts (sm->static_mappings)))
+ if (is_add)
{
- init_nat_k (&kv, ip0->dst_address, port, rx_fib_index0, proto);
- 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];
- }
+ nat_dpo_create (DPO_PROTO_IP4, 0, &dpo_v4);
+ fib_table_entry_special_dpo_add (0, &pfx, sm->fib_src_hi,
+ FIB_ENTRY_FLAG_EXCLUSIVE, &dpo_v4);
+ dpo_reset (&dpo_v4);
+ }
+ else
+ {
+ fib_table_entry_special_remove (0, &pfx, sm->fib_src_hi);
}
-
- /* worker by outside port */
- next_worker_index = sm->first_worker_index;
- next_worker_index +=
- sm->workers[(clib_net_to_host_u16 (port) - 1024) / sm->port_per_thread];
- return next_worker_index;
}
static u32
-nat44_ed_get_worker_in2out_cb (ip4_header_t * ip, u32 rx_fib_index,
+nat44_ed_get_worker_in2out_cb (ip4_header_t *ip, u32 rx_fib_index,
u8 is_output)
{
snat_main_t *sm = &snat_main;
init_ed_k (&kv16, ip->src_address, udp->src_port, ip->dst_address,
udp->dst_port, fib_index, ip->protocol);
- if (PREDICT_TRUE (!clib_bihash_search_16_8 (&sm->out2in_ed,
- &kv16, &value16)))
+ if (PREDICT_TRUE (
+ !clib_bihash_search_16_8 (&sm->flow_hash, &kv16, &value16)))
{
tsm =
vec_elt_at_index (sm->per_thread_data,
init_ed_k (&kv16, ip->dst_address, udp->dst_port, ip->src_address,
udp->src_port, rx_fib_index, ip->protocol);
- if (PREDICT_TRUE (!clib_bihash_search_16_8 (&sm->out2in_ed,
- &kv16, &value16)))
+ if (PREDICT_TRUE (
+ !clib_bihash_search_16_8 (&sm->flow_hash, &kv16, &value16)))
{
tsm =
vec_elt_at_index (sm->per_thread_data,
ed_value_get_thread_index (&value16));
- vnet_buffer2 (b)->nat.ed_out2in_nat_session_index =
+ vnet_buffer2 (b)->nat.cached_session_index =
ed_value_get_session_index (&value16);
next_worker_index = sm->first_worker_index + tsm->thread_index;
nat_elog_debug_handoff ("HANDOFF OUT2IN (session)",
}
else if (proto == NAT_PROTOCOL_ICMP)
{
- if (!get_icmp_o2i_ed_key (b, ip, rx_fib_index, ~0, ~0, 0, 0, 0, &kv16))
+ ip4_address_t lookup_saddr, lookup_daddr;
+ u16 lookup_sport, lookup_dport;
+ u8 lookup_protocol;
+ if (!nat_get_icmp_session_lookup_values (
+ b, ip, &lookup_saddr, &lookup_sport, &lookup_daddr, &lookup_dport,
+ &lookup_protocol))
{
- if (PREDICT_TRUE (!clib_bihash_search_16_8 (&sm->out2in_ed,
- &kv16, &value16)))
+ init_ed_k (&kv16, lookup_saddr, lookup_sport, lookup_daddr,
+ lookup_dport, rx_fib_index, lookup_protocol);
+ if (PREDICT_TRUE (
+ !clib_bihash_search_16_8 (&sm->flow_hash, &kv16, &value16)))
{
tsm =
vec_elt_at_index (sm->per_thread_data,
/* try static mappings with port */
if (PREDICT_FALSE (pool_elts (sm->static_mappings)))
{
- init_nat_k (&kv, ip->dst_address, proto, 0, port);
+ init_nat_k (&kv, ip->dst_address, port, 0, proto);
if (!clib_bihash_search_8_8
(&sm->static_mapping_by_external, &kv, &value))
{
return next_worker_index;
}
-void
-nat_ha_sadd_cb (ip4_address_t * in_addr, u16 in_port,
- ip4_address_t * out_addr, u16 out_port,
- ip4_address_t * eh_addr, u16 eh_port,
- ip4_address_t * ehn_addr, u16 ehn_port, u8 proto,
- u32 fib_index, u16 flags, u32 thread_index)
+u32
+nat_calc_bihash_buckets (u32 n_elts)
{
- snat_main_t *sm = &snat_main;
- snat_main_per_thread_data_t *tsm = &sm->per_thread_data[thread_index];
- snat_user_t *u;
- snat_session_t *s;
- clib_bihash_kv_8_8_t kv;
- vlib_main_t *vm = vlib_get_main ();
- f64 now = vlib_time_now (vm);
- nat_outside_fib_t *outside_fib;
- fib_node_index_t fei = FIB_NODE_INDEX_INVALID;
- fib_prefix_t pfx = {
- .fp_proto = FIB_PROTOCOL_IP4,
- .fp_len = 32,
- .fp_addr = {
- .ip4.as_u32 = eh_addr->as_u32,
- },
- };
-
- if (!(flags & SNAT_SESSION_FLAG_STATIC_MAPPING))
- {
- if (nat_set_outside_address_and_port
- (sm->addresses, thread_index, *out_addr, out_port, proto))
- return;
- }
-
- u = nat_user_get_or_create (sm, in_addr, fib_index, thread_index);
- if (!u)
- return;
-
- s = nat_session_alloc_or_recycle (sm, u, thread_index, now);
- if (!s)
- return;
-
- if (sm->endpoint_dependent)
+ n_elts = n_elts / 2.5;
+ u64 lower_pow2 = 1;
+ while (lower_pow2 * 2 < n_elts)
{
- nat_ed_lru_insert (tsm, s, now, nat_proto_to_ip_proto (proto));
+ lower_pow2 = 2 * lower_pow2;
}
-
- s->out2in.addr.as_u32 = out_addr->as_u32;
- s->out2in.port = out_port;
- s->nat_proto = proto;
- s->last_heard = now;
- s->flags = flags;
- s->ext_host_addr.as_u32 = eh_addr->as_u32;
- s->ext_host_port = eh_port;
- user_session_increment (sm, u, snat_is_session_static (s));
- switch (vec_len (sm->outside_fibs))
+ u64 upper_pow2 = 2 * lower_pow2;
+ if ((upper_pow2 - n_elts) < (n_elts - lower_pow2))
{
- case 0:
- s->out2in.fib_index = sm->outside_fib_index;
- break;
- case 1:
- s->out2in.fib_index = sm->outside_fibs[0].fib_index;
- break;
- default:
- /* *INDENT-OFF* */
- vec_foreach (outside_fib, sm->outside_fibs)
- {
- fei = fib_table_lookup (outside_fib->fib_index, &pfx);
- if (FIB_NODE_INDEX_INVALID != fei)
- {
- if (fib_entry_get_resolving_interface (fei) != ~0)
- {
- s->out2in.fib_index = outside_fib->fib_index;
- break;
- }
- }
- }
- /* *INDENT-ON* */
- break;
+ if (upper_pow2 <= UINT32_MAX)
+ {
+ return upper_pow2;
+ }
}
- init_nat_o2i_kv (&kv, s, s - tsm->sessions);
- if (clib_bihash_add_del_8_8 (&tsm->out2in, &kv, 1))
- nat_elog_warn ("out2in key add failed");
-
- s->in2out.addr.as_u32 = in_addr->as_u32;
- s->in2out.port = in_port;
- s->in2out.fib_index = fib_index;
- init_nat_i2o_kv (&kv, s, s - tsm->sessions);
- if (clib_bihash_add_del_8_8 (&tsm->in2out, &kv, 1))
- nat_elog_warn ("in2out key add failed");
-}
-
-void
-nat_ha_sdel_cb (ip4_address_t * out_addr, u16 out_port,
- ip4_address_t * eh_addr, u16 eh_port, u8 proto, u32 fib_index,
- u32 ti)
-{
- snat_main_t *sm = &snat_main;
- clib_bihash_kv_8_8_t kv, value;
- u32 thread_index;
- snat_session_t *s;
- snat_main_per_thread_data_t *tsm;
-
- if (sm->num_workers > 1)
- thread_index =
- sm->first_worker_index +
- (sm->workers[(clib_net_to_host_u16 (out_port) -
- 1024) / sm->port_per_thread]);
- else
- thread_index = sm->num_workers;
- tsm = vec_elt_at_index (sm->per_thread_data, thread_index);
-
- init_nat_k (&kv, *out_addr, out_port, fib_index, proto);
- if (clib_bihash_search_8_8 (&tsm->out2in, &kv, &value))
- return;
-
- s = pool_elt_at_index (tsm->sessions, value.value);
- nat_free_session_data (sm, s, thread_index, 1);
- nat44_delete_session (sm, s, thread_index);
+ return lower_pow2;
}
-void
-nat_ha_sref_cb (ip4_address_t * out_addr, u16 out_port,
- ip4_address_t * eh_addr, u16 eh_port, u8 proto, u32 fib_index,
- u32 total_pkts, u64 total_bytes, u32 thread_index)
-{
- snat_main_t *sm = &snat_main;
- clib_bihash_kv_8_8_t kv, value;
- snat_session_t *s;
- snat_main_per_thread_data_t *tsm;
-
- tsm = vec_elt_at_index (sm->per_thread_data, thread_index);
-
- init_nat_k (&kv, *out_addr, out_port, fib_index, proto);
- if (clib_bihash_search_8_8 (&tsm->out2in, &kv, &value))
- return;
-
- s = pool_elt_at_index (tsm->sessions, value.value);
- s->total_pkts = total_pkts;
- s->total_bytes = total_bytes;
-}
-
-void
-nat_ha_sadd_ed_cb (ip4_address_t * in_addr, u16 in_port,
- ip4_address_t * out_addr, u16 out_port,
- ip4_address_t * eh_addr, u16 eh_port,
- ip4_address_t * ehn_addr, u16 ehn_port, u8 proto,
- u32 fib_index, u16 flags, u32 thread_index)
+u32
+nat44_get_max_session_limit ()
{
snat_main_t *sm = &snat_main;
- snat_main_per_thread_data_t *tsm = &sm->per_thread_data[thread_index];
- snat_session_t *s;
- clib_bihash_kv_16_8_t kv;
- vlib_main_t *vm = vlib_get_main ();
- f64 now = vlib_time_now (vm);
- nat_outside_fib_t *outside_fib;
- fib_node_index_t fei = FIB_NODE_INDEX_INVALID;
- fib_prefix_t pfx = {
- .fp_proto = FIB_PROTOCOL_IP4,
- .fp_len = 32,
- .fp_addr = {
- .ip4.as_u32 = eh_addr->as_u32,
- },
- };
-
-
- if (!(flags & SNAT_SESSION_FLAG_STATIC_MAPPING))
- {
- if (nat_set_outside_address_and_port
- (sm->addresses, thread_index, *out_addr, out_port, proto))
- return;
- }
-
- if (flags & SNAT_SESSION_FLAG_TWICE_NAT)
- {
- if (nat_set_outside_address_and_port
- (sm->addresses, thread_index, *ehn_addr, ehn_port, proto))
- return;
- }
+ u32 max_limit = 0, len = 0;
- s = nat_ed_session_alloc (sm, thread_index, now, proto);
- if (!s)
- return;
-
- s->last_heard = now;
- s->flags = flags;
- s->ext_host_nat_addr.as_u32 = s->ext_host_addr.as_u32 = eh_addr->as_u32;
- s->ext_host_nat_port = s->ext_host_port = eh_port;
- if (is_twice_nat_session (s))
- {
- s->ext_host_nat_addr.as_u32 = ehn_addr->as_u32;
- s->ext_host_nat_port = ehn_port;
- }
- switch (vec_len (sm->outside_fibs))
+ for (; len < vec_len (sm->max_translations_per_fib); len++)
{
- case 0:
- s->out2in.fib_index = sm->outside_fib_index;
- break;
- case 1:
- s->out2in.fib_index = sm->outside_fibs[0].fib_index;
- break;
- default:
- /* *INDENT-OFF* */
- vec_foreach (outside_fib, sm->outside_fibs)
- {
- fei = fib_table_lookup (outside_fib->fib_index, &pfx);
- if (FIB_NODE_INDEX_INVALID != fei)
- {
- if (fib_entry_get_resolving_interface (fei) != ~0)
- {
- s->out2in.fib_index = outside_fib->fib_index;
- break;
- }
- }
- }
- /* *INDENT-ON* */
- break;
+ if (max_limit < sm->max_translations_per_fib[len])
+ max_limit = sm->max_translations_per_fib[len];
}
- s->nat_proto = proto;
- s->out2in.addr.as_u32 = out_addr->as_u32;
- s->out2in.port = out_port;
-
- s->in2out.addr.as_u32 = in_addr->as_u32;
- s->in2out.port = in_port;
- s->in2out.fib_index = fib_index;
-
- init_ed_kv (&kv, *in_addr, in_port, s->ext_host_nat_addr,
- s->ext_host_nat_port, fib_index, nat_proto_to_ip_proto (proto),
- thread_index, s - tsm->sessions);
- if (clib_bihash_add_del_16_8 (&tsm->in2out_ed, &kv, 1))
- nat_elog_warn ("in2out key add failed");
-
- init_ed_kv (&kv, *out_addr, out_port, *eh_addr, eh_port,
- s->out2in.fib_index, nat_proto_to_ip_proto (proto),
- thread_index, s - tsm->sessions);
- if (clib_bihash_add_del_16_8 (&sm->out2in_ed, &kv, 1))
- nat_elog_warn ("out2in key add failed");
+ return max_limit;
}
-void
-nat_ha_sdel_ed_cb (ip4_address_t * out_addr, u16 out_port,
- ip4_address_t * eh_addr, u16 eh_port, u8 proto,
- u32 fib_index, u32 ti)
+int
+nat44_set_session_limit (u32 session_limit, u32 vrf_id)
{
snat_main_t *sm = &snat_main;
- clib_bihash_kv_16_8_t kv, value;
- u32 thread_index;
- snat_session_t *s;
- snat_main_per_thread_data_t *tsm;
+ u32 fib_index = fib_table_find (FIB_PROTOCOL_IP4, vrf_id);
+ u32 len = vec_len (sm->max_translations_per_fib);
- if (sm->num_workers > 1)
- thread_index =
- sm->first_worker_index +
- (sm->workers[(clib_net_to_host_u16 (out_port) -
- 1024) / sm->port_per_thread]);
- else
- thread_index = sm->num_workers;
- tsm = vec_elt_at_index (sm->per_thread_data, thread_index);
+ if (len <= fib_index)
+ {
+ vec_validate (sm->max_translations_per_fib, fib_index + 1);
- init_ed_k (&kv, *out_addr, out_port, *eh_addr, eh_port, fib_index, proto);
- if (clib_bihash_search_16_8 (&sm->out2in_ed, &kv, &value))
- return;
+ for (; len < vec_len (sm->max_translations_per_fib); len++)
+ sm->max_translations_per_fib[len] = sm->max_translations_per_thread;
+ }
- s = pool_elt_at_index (tsm->sessions, ed_value_get_session_index (&value));
- nat_free_session_data (sm, s, thread_index, 1);
- nat44_delete_session (sm, s, thread_index);
+ sm->max_translations_per_fib[fib_index] = session_limit;
+ return 0;
}
-void
-nat_ha_sref_ed_cb (ip4_address_t * out_addr, u16 out_port,
- ip4_address_t * eh_addr, u16 eh_port, u8 proto,
- u32 fib_index, u32 total_pkts, u64 total_bytes,
- u32 thread_index)
+int
+nat44_update_session_limit (u32 session_limit, u32 vrf_id)
{
snat_main_t *sm = &snat_main;
- clib_bihash_kv_16_8_t kv, value;
- snat_session_t *s;
- snat_main_per_thread_data_t *tsm;
-
- tsm = vec_elt_at_index (sm->per_thread_data, thread_index);
- init_ed_k (&kv, *out_addr, out_port, *eh_addr, eh_port, fib_index, proto);
- if (clib_bihash_search_16_8 (&sm->out2in_ed, &kv, &value))
- return;
-
- s = pool_elt_at_index (tsm->sessions, ed_value_get_session_index (&value));
- s->total_pkts = total_pkts;
- s->total_bytes = total_bytes;
-}
+ if (nat44_set_session_limit (session_limit, vrf_id))
+ return 1;
+ sm->max_translations_per_thread = nat44_get_max_session_limit ();
-static u32
-nat_calc_bihash_buckets (u32 n_elts)
-{
- return 1 << (max_log2 (n_elts >> 1) + 1);
-}
+ sm->translation_buckets =
+ nat_calc_bihash_buckets (sm->max_translations_per_thread);
-static u32
-nat_calc_bihash_memory (u32 n_buckets, uword kv_size)
-{
- return n_buckets * (8 + kv_size * 4);
+ nat44_sessions_clear ();
+ return 0;
}
-void
-nat44_db_init (snat_main_per_thread_data_t * tsm)
+static void
+nat44_ed_worker_db_init (snat_main_per_thread_data_t *tsm, u32 translations,
+ u32 translation_buckets, u32 user_buckets)
{
- snat_main_t *sm = &snat_main;
-
- pool_alloc (tsm->sessions, sm->max_translations_per_thread);
- pool_alloc (tsm->lru_pool, sm->max_translations_per_thread);
-
dlist_elt_t *head;
+ pool_alloc (tsm->sessions, translations);
+ pool_alloc (tsm->lru_pool, translations);
+
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);
tsm->unk_proto_lru_head_index = head - tsm->lru_pool;
clib_dlist_init (tsm->lru_pool, tsm->unk_proto_lru_head_index);
- if (sm->endpoint_dependent)
- {
- clib_bihash_init_16_8 (&tsm->in2out_ed, "in2out-ed",
- sm->translation_buckets,
- sm->translation_memory_size);
- clib_bihash_set_kvp_format_fn_16_8 (&tsm->in2out_ed,
- format_ed_session_kvp);
- }
- else
- {
- clib_bihash_init_8_8 (&tsm->in2out, "in2out",
- sm->translation_buckets,
- sm->translation_memory_size);
- clib_bihash_set_kvp_format_fn_8_8 (&tsm->in2out, format_session_kvp);
- clib_bihash_init_8_8 (&tsm->out2in, "out2in",
- sm->translation_buckets,
- sm->translation_memory_size);
- clib_bihash_set_kvp_format_fn_8_8 (&tsm->out2in, format_session_kvp);
- }
-
- // TODO: resolve static mappings (put only to !ED)
- pool_alloc (tsm->list_pool, sm->max_translations_per_thread);
- clib_bihash_init_8_8 (&tsm->user_hash, "users", sm->user_buckets,
- sm->user_memory_size);
+ // TODO: ED nat is not using these
+ // before removal large refactor required
+ pool_alloc (tsm->list_pool, translations);
+ clib_bihash_init_8_8 (&tsm->user_hash, "users", user_buckets, 0);
clib_bihash_set_kvp_format_fn_8_8 (&tsm->user_hash, format_user_kvp);
}
-void
-nat44_db_free (snat_main_per_thread_data_t * tsm)
+static void
+reinit_ed_flow_hash ()
{
snat_main_t *sm = &snat_main;
-
- pool_free (tsm->sessions);
- pool_free (tsm->lru_pool);
-
- if (sm->endpoint_dependent)
- {
- clib_bihash_free_16_8 (&tsm->in2out_ed);
- }
- else
- {
- clib_bihash_free_8_8 (&tsm->in2out);
- clib_bihash_free_8_8 (&tsm->out2in);
- }
-
- // TODO: resolve static mappings (put only to !ED)
- pool_free (tsm->users);
- pool_free (tsm->list_pool);
- clib_bihash_free_8_8 (&tsm->user_hash);
+ // we expect 2 flows per session, so multiply translation_buckets by 2
+ clib_bihash_init_16_8 (
+ &sm->flow_hash, "ed-flow-hash",
+ clib_max (1, sm->num_workers) * 2 * sm->translation_buckets, 0);
+ clib_bihash_set_kvp_format_fn_16_8 (&sm->flow_hash, format_ed_session_kvp);
}
-void
-nat44_sessions_clear ()
+static void
+nat44_ed_db_init (u32 translations, u32 translation_buckets, u32 user_buckets)
{
snat_main_t *sm = &snat_main;
snat_main_per_thread_data_t *tsm;
+ u32 static_mapping_buckets = 1024;
+ u32 static_mapping_memory_size = 64 << 20;
- if (sm->endpoint_dependent)
- {
- clib_bihash_free_16_8 (&sm->out2in_ed);
- clib_bihash_init_16_8 (&sm->out2in_ed, "out2in-ed",
- clib_max (1, sm->num_workers) *
- sm->translation_buckets,
- clib_max (1, sm->num_workers) *
- sm->translation_memory_size);
- clib_bihash_set_kvp_format_fn_16_8 (&sm->out2in_ed,
- format_ed_session_kvp);
- }
+ reinit_ed_flow_hash ();
- /* *INDENT-OFF* */
- vec_foreach (tsm, sm->per_thread_data)
- {
- u32 ti;
+ clib_bihash_init_8_8 (&sm->static_mapping_by_local,
+ "static_mapping_by_local", static_mapping_buckets,
+ static_mapping_memory_size);
+ clib_bihash_set_kvp_format_fn_8_8 (&sm->static_mapping_by_local,
+ format_static_mapping_kvp);
- nat44_db_free (tsm);
- nat44_db_init (tsm);
+ 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_external,
+ format_static_mapping_kvp);
- ti = tsm->snat_thread_index;
- vlib_set_simple_counter (&sm->total_users, ti, 0, 0);
- vlib_set_simple_counter (&sm->total_sessions, ti, 0, 0);
+ if (sm->pat)
+ {
+ vec_foreach (tsm, sm->per_thread_data)
+ {
+ nat44_ed_worker_db_init (tsm, sm->max_translations_per_thread,
+ sm->translation_buckets, sm->user_buckets);
+ }
}
- /* *INDENT-ON* */
}
-static clib_error_t *
-snat_config (vlib_main_t * vm, unformat_input_t * input)
+static void
+nat44_ed_worker_db_free (snat_main_per_thread_data_t *tsm)
{
- snat_main_t *sm = &snat_main;
- snat_main_per_thread_data_t *tsm;
-
- u32 static_mapping_buckets = 1024;
- uword static_mapping_memory_size = 64 << 20;
-
- u32 nat64_bib_buckets = 1024;
- u32 nat64_bib_memory_size = 128 << 20;
-
- u32 nat64_st_buckets = 2048;
- uword nat64_st_memory_size = 256 << 20;
-
- u32 max_users_per_thread = 0;
- u32 user_memory_size = 0;
- u32 max_translations_per_thread = 0;
- u32 translation_memory_size = 0;
-
- u32 max_translations_per_user = ~0;
-
- u32 outside_vrf_id = 0;
- u32 outside_ip6_vrf_id = 0;
- u32 inside_vrf_id = 0;
- u8 static_mapping_only = 0;
- u8 static_mapping_connection_tracking = 0;
-
- u32 udp_timeout = SNAT_UDP_TIMEOUT;
- u32 icmp_timeout = SNAT_ICMP_TIMEOUT;
- u32 tcp_transitory_timeout = SNAT_TCP_TRANSITORY_TIMEOUT;
- u32 tcp_established_timeout = SNAT_TCP_ESTABLISHED_TIMEOUT;
+ pool_free (tsm->sessions);
+ pool_free (tsm->lru_pool);
- sm->out2in_dpo = 0;
- sm->endpoint_dependent = 0;
+ vec_free (tsm->per_vrf_sessions_vec);
- while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
- {
- if (unformat
- (input, "max translations per thread %d",
- &max_translations_per_thread))
- ;
- else if (unformat (input, "udp timeout %d", &udp_timeout))
- ;
- else if (unformat (input, "icmp timeout %d", &icmp_timeout))
- ;
- else if (unformat (input, "tcp transitory timeout %d",
- &tcp_transitory_timeout));
- else if (unformat (input, "tcp established timeout %d",
- &tcp_established_timeout));
- else if (unformat (input, "translation hash memory %d",
- &translation_memory_size));
- else
- if (unformat
- (input, "max users per thread %d", &max_users_per_thread))
- ;
- else if (unformat (input, "user hash memory %d", &user_memory_size))
- ;
- else if (unformat (input, "max translations per user %d",
- &max_translations_per_user))
- ;
- else if (unformat (input, "outside VRF id %d", &outside_vrf_id))
- ;
- else if (unformat (input, "outside ip6 VRF id %d", &outside_ip6_vrf_id))
- ;
- else if (unformat (input, "inside VRF id %d", &inside_vrf_id))
- ;
- else if (unformat (input, "static mapping only"))
- {
- static_mapping_only = 1;
- if (unformat (input, "connection tracking"))
- static_mapping_connection_tracking = 1;
- }
- else if (unformat (input, "nat64 bib hash buckets %d",
- &nat64_bib_buckets))
- ;
- else if (unformat (input, "nat64 bib hash memory %d",
- &nat64_bib_memory_size))
- ;
- else
- if (unformat (input, "nat64 st hash buckets %d", &nat64_st_buckets))
- ;
- else if (unformat (input, "nat64 st hash memory %d",
- &nat64_st_memory_size))
- ;
- else if (unformat (input, "out2in dpo"))
- sm->out2in_dpo = 1;
- else if (unformat (input, "endpoint-dependent"))
- sm->endpoint_dependent = 1;
- else
- return clib_error_return (0, "unknown input '%U'",
- format_unformat_error, input);
- }
+ // TODO: resolve static mappings (put only to !ED)
+ pool_free (tsm->list_pool);
+ pool_free (tsm->users);
+ clib_bihash_free_8_8 (&tsm->user_hash);
+}
- if (static_mapping_only && (sm->endpoint_dependent))
- return clib_error_return (0,
- "static mapping only mode available only for simple nat");
+static void
+nat44_ed_db_free ()
+{
+ snat_main_t *sm = &snat_main;
+ snat_main_per_thread_data_t *tsm;
- if (sm->out2in_dpo && (sm->endpoint_dependent))
- return clib_error_return (0,
- "out2in dpo mode available only for simple nat");
- if (sm->endpoint_dependent && max_users_per_thread > 0)
- {
- return clib_error_return (0,
- "setting 'max users' in endpoint-dependent mode is not supported");
- }
+ pool_free (sm->static_mappings);
+ clib_bihash_free_16_8 (&sm->flow_hash);
+ clib_bihash_free_8_8 (&sm->static_mapping_by_local);
+ clib_bihash_free_8_8 (&sm->static_mapping_by_external);
- if (sm->endpoint_dependent && max_translations_per_user != ~0)
+ if (sm->pat)
{
- return clib_error_return (0,
- "setting 'max translations per user' in endpoint-dependent mode is not supported");
+ vec_foreach (tsm, sm->per_thread_data)
+ {
+ nat44_ed_worker_db_free (tsm);
+ }
}
+}
- /* optionally configurable timeouts for testing purposes */
- sm->udp_timeout = udp_timeout;
- sm->tcp_transitory_timeout = tcp_transitory_timeout;
- sm->tcp_established_timeout = tcp_established_timeout;
- sm->icmp_timeout = icmp_timeout;
+void
+nat44_ed_sessions_clear ()
+{
+ snat_main_t *sm = &snat_main;
+ snat_main_per_thread_data_t *tsm;
- if (0 == max_users_per_thread)
- {
- max_users_per_thread = 1024;
- }
- sm->max_users_per_thread = max_users_per_thread;
- sm->user_buckets = nat_calc_bihash_buckets (sm->max_users_per_thread);
+ reinit_ed_flow_hash ();
- if (0 == max_translations_per_thread)
- {
- // default value based on legacy setting of load factor 10 * default
- // translation buckets 1024
- max_translations_per_thread = 10 * 1024;
- }
- sm->max_translations_per_thread = max_translations_per_thread;
- sm->translation_buckets =
- nat_calc_bihash_buckets (sm->max_translations_per_thread);
- if (0 == translation_memory_size)
- {
- translation_memory_size =
- nat_calc_bihash_memory (sm->translation_buckets,
- sizeof (clib_bihash_16_8_t));
- }
- sm->translation_memory_size = translation_memory_size;
- if (0 == user_memory_size)
+ if (sm->pat)
{
- user_memory_size =
- nat_calc_bihash_memory (sm->max_users_per_thread,
- sizeof (clib_bihash_8_8_t));
- }
- sm->user_memory_size = user_memory_size;
- vec_add1 (sm->max_translations_per_fib, sm->max_translations_per_thread);
+ vec_foreach (tsm, sm->per_thread_data)
+ {
- sm->max_translations_per_user = max_translations_per_user == ~0 ?
- sm->max_translations_per_thread : max_translations_per_user;
+ nat44_ed_worker_db_free (tsm);
+ nat44_ed_worker_db_init (tsm, sm->max_translations_per_thread,
+ sm->translation_buckets, sm->user_buckets);
+ }
+ }
- sm->outside_vrf_id = outside_vrf_id;
- sm->outside_fib_index = fib_table_find_or_create_and_lock (FIB_PROTOCOL_IP4,
- outside_vrf_id,
- nat_fib_src_hi);
- sm->inside_vrf_id = inside_vrf_id;
- sm->inside_fib_index = fib_table_find_or_create_and_lock (FIB_PROTOCOL_IP4,
- inside_vrf_id,
- nat_fib_src_hi);
- sm->static_mapping_only = static_mapping_only;
- sm->static_mapping_connection_tracking = static_mapping_connection_tracking;
+ // 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);
+}
- nat64_set_hash (nat64_bib_buckets, nat64_bib_memory_size, nat64_st_buckets,
- nat64_st_memory_size);
+void
+nat44_sessions_clear ()
+{
+ snat_main_t *sm = &snat_main;
if (sm->endpoint_dependent)
- {
- sm->worker_in2out_cb = nat44_ed_get_worker_in2out_cb;
- sm->worker_out2in_cb = nat44_ed_get_worker_out2in_cb;
-
- sm->in2out_node_index = nat44_ed_in2out_node.index;
- sm->in2out_output_node_index = nat44_ed_in2out_output_node.index;
- sm->out2in_node_index = nat44_ed_out2in_node.index;
-
- sm->icmp_match_in2out_cb = icmp_match_in2out_ed;
- sm->icmp_match_out2in_cb = icmp_match_out2in_ed;
- nat_affinity_init (vm);
- nat_ha_init (vm, nat_ha_sadd_ed_cb, nat_ha_sdel_ed_cb,
- nat_ha_sref_ed_cb);
- clib_bihash_init_16_8 (&sm->out2in_ed, "out2in-ed",
- clib_max (1, sm->num_workers) *
- sm->translation_buckets,
- clib_max (1, sm->num_workers) *
- sm->translation_memory_size);
- clib_bihash_set_kvp_format_fn_16_8 (&sm->out2in_ed,
- format_ed_session_kvp);
- }
+ nat44_ed_sessions_clear ();
else
- {
- sm->worker_in2out_cb = snat_get_worker_in2out_cb;
- sm->worker_out2in_cb = snat_get_worker_out2in_cb;
-
- sm->in2out_node_index = snat_in2out_node.index;
- sm->in2out_output_node_index = snat_in2out_output_node.index;
- sm->out2in_node_index = snat_out2in_node.index;
-
- sm->icmp_match_in2out_cb = icmp_match_in2out_slow;
- sm->icmp_match_out2in_cb = icmp_match_out2in_slow;
- nat_ha_init (vm, nat_ha_sadd_cb, nat_ha_sdel_cb, nat_ha_sref_cb);
- }
- if (!static_mapping_only ||
- (static_mapping_only && static_mapping_connection_tracking))
- {
- /* *INDENT-OFF* */
- vec_foreach (tsm, sm->per_thread_data)
- {
- nat44_db_init (tsm);
- }
- /* *INDENT-ON* */
- }
- else
- {
- sm->icmp_match_in2out_cb = icmp_match_in2out_fast;
- sm->icmp_match_out2in_cb = icmp_match_out2in_fast;
- }
- clib_bihash_init_8_8 (&sm->static_mapping_by_local,
- "static_mapping_by_local", 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_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_external,
- format_static_mapping_kvp);
-
- return 0;
+ nat44_ei_sessions_clear ();
}
-VLIB_CONFIG_FUNCTION (snat_config, "nat");
-
static void
nat_ip4_add_del_addr_only_sm_cb (ip4_main_t * im,
uword opaque,
int i, rv;
ip4_address_t l_addr;
+ if (!sm->enabled)
+ return;
+
for (i = 0; i < vec_len (sm->to_resolve); i++)
{
rp = sm->to_resolve + i;
rp->vrf_id,
rp->addr_only, ~0 /* sw_if_index */ ,
rp->proto, !is_delete, rp->twice_nat,
- rp->out2in_only, rp->tag, rp->identity_nat);
+ rp->out2in_only, rp->tag, rp->identity_nat,
+ rp->pool_addr, rp->exact);
if (rv)
nat_elog_notice_X1 ("snat_add_static_mapping returned %d", "i4", rv);
}
u8 twice_nat = 0;
snat_address_t *addresses = sm->addresses;
+ if (!sm->enabled)
+ return;
+
for (i = 0; i < vec_len (sm->auto_add_sw_if_indices); i++)
{
if (sw_if_index == sm->auto_add_sw_if_indices[i])
else
l_addr.as_u32 = rp->l_addr.as_u32;
/* Add the static mapping */
- rv = snat_add_static_mapping (l_addr,
- address[0],
- rp->l_port,
- rp->e_port,
- rp->vrf_id,
- rp->addr_only,
- ~0 /* sw_if_index */ ,
- rp->proto,
- rp->is_add, rp->twice_nat,
- rp->out2in_only, rp->tag,
- rp->identity_nat);
+ rv = snat_add_static_mapping (
+ l_addr, address[0], rp->l_port, rp->e_port, rp->vrf_id,
+ rp->addr_only, ~0 /* sw_if_index */, rp->proto, 1,
+ rp->twice_nat, rp->out2in_only, rp->tag, rp->identity_nat,
+ rp->pool_addr, rp->exact);
if (rv)
nat_elog_notice_X1 ("snat_add_static_mapping returned %d",
"i4", rv);
}
}
-
int
snat_add_interface_address (snat_main_t * sm, u32 sw_if_index, int is_del,
u8 twice_nat)
return 0;
}
-int
-nat44_del_session (snat_main_t * sm, ip4_address_t * addr, u16 port,
- nat_protocol_t proto, u32 vrf_id, int is_in)
-{
- snat_main_per_thread_data_t *tsm;
- 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;
- 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));
- else
- tsm = vec_elt_at_index (sm->per_thread_data, sm->num_workers);
-
- init_nat_k (&kv, *addr, port, fib_index, proto);
- t = is_in ? &tsm->in2out : &tsm->out2in;
- if (!clib_bihash_search_8_8 (t, &kv, &value))
- {
- if (pool_is_free_index (tsm->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);
- return 0;
- }
-
- return VNET_API_ERROR_NO_SUCH_ENTRY;
-}
-
int
nat44_del_ed_session (snat_main_t * sm, ip4_address_t * addr, u16 port,
ip4_address_t * eh_addr, u16 eh_port, u8 proto,
u32 vrf_id, int is_in)
{
ip4_header_t ip;
- clib_bihash_16_8_t *t;
clib_bihash_kv_16_8_t kv, value;
u32 fib_index = fib_table_find (FIB_PROTOCOL_IP4, vrf_id);
snat_session_t *s;
else
tsm = vec_elt_at_index (sm->per_thread_data, sm->num_workers);
- t = is_in ? &tsm->in2out_ed : &sm->out2in_ed;
init_ed_k (&kv, *addr, port, *eh_addr, eh_port, fib_index, proto);
- if (clib_bihash_search_16_8 (t, &kv, &value))
+ if (clib_bihash_search_16_8 (&sm->flow_hash, &kv, &value))
{
return VNET_API_ERROR_NO_SUCH_ENTRY;
}
- if (pool_is_free_index (tsm->sessions, value.value))
+ if (pool_is_free_index (tsm->sessions, ed_value_get_session_index (&value)))
return VNET_API_ERROR_UNSPECIFIED;
- s = pool_elt_at_index (tsm->sessions, value.value);
+ s = pool_elt_at_index (tsm->sessions, ed_value_get_session_index (&value));
nat_free_session_data (sm, s, tsm - sm->per_thread_data, 0);
nat_ed_session_delete (sm, s, tsm - sm->per_thread_data, 1);
return 0;
}
-void
-nat_set_alloc_addr_and_port_mape (u16 psid, u16 psid_offset, u16 psid_length)
-{
- snat_main_t *sm = &snat_main;
-
- sm->addr_and_port_alloc_alg = NAT_ADDR_AND_PORT_ALLOC_ALG_MAPE;
- sm->alloc_addr_and_port = nat_alloc_addr_and_port_mape;
- sm->psid = psid;
- sm->psid_offset = psid_offset;
- sm->psid_length = psid_length;
-}
-
-void
-nat_set_alloc_addr_and_port_range (u16 start_port, u16 end_port)
-{
- snat_main_t *sm = &snat_main;
-
- sm->addr_and_port_alloc_alg = NAT_ADDR_AND_PORT_ALLOC_ALG_RANGE;
- sm->alloc_addr_and_port = nat_alloc_addr_and_port_range;
- sm->start_port = start_port;
- sm->end_port = end_port;
-}
-
-void
-nat_set_alloc_addr_and_port_default (void)
-{
- snat_main_t *sm = &snat_main;
-
- sm->addr_and_port_alloc_alg = NAT_ADDR_AND_PORT_ALLOC_ALG_DEFAULT;
- sm->alloc_addr_and_port = nat_alloc_addr_and_port_default;
-}
-
VLIB_NODE_FN (nat_default_node) (vlib_main_t * vm,
vlib_node_runtime_t * node,
vlib_frame_t * frame)
[NAT_NEXT_ICMP_ERROR] = "ip4-icmp-error",
[NAT_NEXT_IN2OUT_ED_FAST_PATH] = "nat44-ed-in2out",
[NAT_NEXT_IN2OUT_ED_SLOW_PATH] = "nat44-ed-in2out-slowpath",
+ [NAT_NEXT_IN2OUT_ED_OUTPUT_FAST_PATH] = "nat44-ed-in2out-output",
[NAT_NEXT_IN2OUT_ED_OUTPUT_SLOW_PATH] = "nat44-ed-in2out-output-slowpath",
[NAT_NEXT_OUT2IN_ED_FAST_PATH] = "nat44-ed-out2in",
[NAT_NEXT_OUT2IN_ED_SLOW_PATH] = "nat44-ed-out2in-slowpath",
};
/* *INDENT-ON* */
+void
+nat_6t_l3_l4_csum_calc (nat_6t_flow_t *f)
+{
+ f->l3_csum_delta = 0;
+ f->l4_csum_delta = 0;
+ if (f->ops & NAT_FLOW_OP_SADDR_REWRITE &&
+ f->rewrite.saddr.as_u32 != f->match.saddr.as_u32)
+ {
+ f->l3_csum_delta =
+ ip_csum_add_even (f->l3_csum_delta, f->rewrite.saddr.as_u32);
+ f->l3_csum_delta =
+ ip_csum_sub_even (f->l3_csum_delta, f->match.saddr.as_u32);
+ }
+ else
+ {
+ f->rewrite.saddr.as_u32 = f->match.saddr.as_u32;
+ }
+ if (f->ops & NAT_FLOW_OP_DADDR_REWRITE &&
+ f->rewrite.daddr.as_u32 != f->match.daddr.as_u32)
+ {
+ f->l3_csum_delta =
+ ip_csum_add_even (f->l3_csum_delta, f->rewrite.daddr.as_u32);
+ f->l3_csum_delta =
+ ip_csum_sub_even (f->l3_csum_delta, f->match.daddr.as_u32);
+ }
+ else
+ {
+ f->rewrite.daddr.as_u32 = f->match.daddr.as_u32;
+ }
+ if (f->ops & NAT_FLOW_OP_SPORT_REWRITE && f->rewrite.sport != f->match.sport)
+ {
+ f->l4_csum_delta = ip_csum_add_even (f->l4_csum_delta, f->rewrite.sport);
+ f->l4_csum_delta = ip_csum_sub_even (f->l4_csum_delta, f->match.sport);
+ }
+ else
+ {
+ f->rewrite.sport = f->match.sport;
+ }
+ if (f->ops & NAT_FLOW_OP_DPORT_REWRITE && f->rewrite.dport != f->match.dport)
+ {
+ f->l4_csum_delta = ip_csum_add_even (f->l4_csum_delta, f->rewrite.dport);
+ f->l4_csum_delta = ip_csum_sub_even (f->l4_csum_delta, f->match.dport);
+ }
+ else
+ {
+ f->rewrite.dport = f->match.dport;
+ }
+ if (f->ops & NAT_FLOW_OP_ICMP_ID_REWRITE &&
+ f->rewrite.icmp_id != f->match.icmp_id)
+ {
+ f->l4_csum_delta =
+ ip_csum_add_even (f->l4_csum_delta, f->rewrite.icmp_id);
+ f->l4_csum_delta = ip_csum_sub_even (f->l4_csum_delta, f->match.icmp_id);
+ }
+ else
+ {
+ f->rewrite.icmp_id = f->match.icmp_id;
+ }
+ if (f->ops & NAT_FLOW_OP_TXFIB_REWRITE)
+ {
+ }
+ else
+ {
+ f->rewrite.fib_index = f->match.fib_index;
+ }
+}
+
+static_always_inline int nat_6t_flow_icmp_translate (snat_main_t *sm,
+ vlib_buffer_t *b,
+ ip4_header_t *ip,
+ nat_6t_flow_t *f);
+
+static_always_inline void
+nat_6t_flow_ip4_translate (snat_main_t *sm, vlib_buffer_t *b, ip4_header_t *ip,
+ nat_6t_flow_t *f, nat_protocol_t proto,
+ int is_icmp_inner_ip4)
+{
+ udp_header_t *udp = ip4_next_header (ip);
+ tcp_header_t *tcp = (tcp_header_t *) udp;
+
+ if ((NAT_PROTOCOL_TCP == proto || NAT_PROTOCOL_UDP == proto) &&
+ !vnet_buffer (b)->ip.reass.is_non_first_fragment)
+ {
+ if (!is_icmp_inner_ip4)
+ { // regular case
+ ip->src_address = f->rewrite.saddr;
+ ip->dst_address = f->rewrite.daddr;
+ udp->src_port = f->rewrite.sport;
+ udp->dst_port = f->rewrite.dport;
+ }
+ else
+ { // icmp inner ip4 - reversed saddr/daddr
+ ip->src_address = f->rewrite.daddr;
+ ip->dst_address = f->rewrite.saddr;
+ udp->src_port = f->rewrite.dport;
+ udp->dst_port = f->rewrite.sport;
+ }
+
+ if (NAT_PROTOCOL_TCP == proto)
+ {
+ ip_csum_t tcp_sum = tcp->checksum;
+ tcp_sum = ip_csum_sub_even (tcp_sum, f->l3_csum_delta);
+ tcp_sum = ip_csum_sub_even (tcp_sum, f->l4_csum_delta);
+ mss_clamping (sm->mss_clamping, tcp, &tcp_sum);
+ tcp->checksum = ip_csum_fold (tcp_sum);
+ }
+ else if (proto == NAT_PROTOCOL_UDP && udp->checksum)
+ {
+ ip_csum_t udp_sum = udp->checksum;
+ udp_sum = ip_csum_sub_even (udp_sum, f->l3_csum_delta);
+ udp_sum = ip_csum_sub_even (udp_sum, f->l4_csum_delta);
+ udp->checksum = ip_csum_fold (udp_sum);
+ }
+ }
+ else
+ {
+ if (!is_icmp_inner_ip4)
+ { // regular case
+ ip->src_address = f->rewrite.saddr;
+ ip->dst_address = f->rewrite.daddr;
+ }
+ else
+ { // icmp inner ip4 - reversed saddr/daddr
+ ip->src_address = f->rewrite.daddr;
+ ip->dst_address = f->rewrite.saddr;
+ }
+ }
+
+ ip_csum_t ip_sum = ip->checksum;
+ ip_sum = ip_csum_sub_even (ip_sum, f->l3_csum_delta);
+ ip->checksum = ip_csum_fold (ip_sum);
+ ASSERT (ip->checksum == ip4_header_checksum (ip));
+}
+
+static_always_inline int
+nat_6t_flow_icmp_translate (snat_main_t *sm, vlib_buffer_t *b,
+ ip4_header_t *ip, nat_6t_flow_t *f)
+{
+ if (IP_PROTOCOL_ICMP != ip->protocol)
+ return NAT_ED_TRNSL_ERR_TRANSLATION_FAILED;
+
+ icmp46_header_t *icmp = ip4_next_header (ip);
+ icmp_echo_header_t *echo = (icmp_echo_header_t *) (icmp + 1);
+
+ if ((!vnet_buffer (b)->ip.reass.is_non_first_fragment))
+ {
+ if (icmp->checksum == 0)
+ icmp->checksum = 0xffff;
+
+ if (!icmp_type_is_error_message (icmp->type))
+ {
+ if ((f->ops & NAT_FLOW_OP_ICMP_ID_REWRITE) &&
+ (f->rewrite.icmp_id != echo->identifier))
+ {
+ ip_csum_t sum = icmp->checksum;
+ sum = ip_csum_update (sum, echo->identifier, f->rewrite.icmp_id,
+ icmp_echo_header_t,
+ identifier /* changed member */);
+ echo->identifier = f->rewrite.icmp_id;
+ icmp->checksum = ip_csum_fold (sum);
+ }
+ }
+ else
+ {
+ // errors are not fragmented
+ ip4_header_t *inner_ip = (ip4_header_t *) (echo + 1);
+
+ if (!ip4_header_checksum_is_valid (inner_ip))
+ {
+ return NAT_ED_TRNSL_ERR_TRANSLATION_FAILED;
+ }
+
+ nat_protocol_t inner_proto =
+ ip_proto_to_nat_proto (inner_ip->protocol);
+
+ ip_csum_t icmp_sum = icmp->checksum;
+
+ switch (inner_proto)
+ {
+ case NAT_PROTOCOL_UDP:
+ case NAT_PROTOCOL_TCP:
+ nat_6t_flow_ip4_translate (sm, b, inner_ip, f, inner_proto,
+ 1 /* is_icmp_inner_ip4 */);
+ icmp_sum = ip_csum_sub_even (icmp_sum, f->l3_csum_delta);
+ icmp->checksum = ip_csum_fold (icmp_sum);
+ break;
+ case NAT_PROTOCOL_ICMP:
+ if (f->ops & NAT_FLOW_OP_ICMP_ID_REWRITE)
+ {
+ icmp46_header_t *inner_icmp = ip4_next_header (inner_ip);
+ icmp_echo_header_t *inner_echo =
+ (icmp_echo_header_t *) (inner_icmp + 1);
+ if (f->rewrite.icmp_id != inner_echo->identifier)
+ {
+ ip_csum_t sum = icmp->checksum;
+ sum = ip_csum_update (
+ sum, inner_echo->identifier, f->rewrite.icmp_id,
+ icmp_echo_header_t, identifier /* changed member */);
+ icmp->checksum = ip_csum_fold (sum);
+ ip_csum_t inner_sum = inner_icmp->checksum;
+ inner_sum = ip_csum_update (
+ sum, inner_echo->identifier, f->rewrite.icmp_id,
+ icmp_echo_header_t, identifier /* changed member */);
+ inner_icmp->checksum = ip_csum_fold (inner_sum);
+ inner_echo->identifier = f->rewrite.icmp_id;
+ }
+ }
+ break;
+ default:
+ clib_warning ("unexpected NAT protocol value `%d'", inner_proto);
+ return NAT_ED_TRNSL_ERR_TRANSLATION_FAILED;
+ }
+ }
+ }
+ return NAT_ED_TRNSL_ERR_SUCCESS;
+}
+
+nat_translation_error_e
+nat_6t_flow_buf_translate (snat_main_t *sm, vlib_buffer_t *b, ip4_header_t *ip,
+ nat_6t_flow_t *f, nat_protocol_t proto,
+ int is_output_feature)
+{
+ if (!is_output_feature && f->ops & NAT_FLOW_OP_TXFIB_REWRITE)
+ {
+ vnet_buffer (b)->sw_if_index[VLIB_TX] = f->rewrite.fib_index;
+ }
+
+ nat_6t_flow_ip4_translate (sm, b, ip, f, proto, 0 /* is_icmp_inner_ip4 */);
+
+ if (NAT_PROTOCOL_ICMP == proto)
+ {
+ return nat_6t_flow_icmp_translate (sm, b, ip, f);
+ }
+
+ return NAT_ED_TRNSL_ERR_SUCCESS;
+}
+
+u8 *
+format_nat_6t (u8 *s, va_list *args)
+{
+ nat_6t_t *t = va_arg (*args, nat_6t_t *);
+
+ s = format (s, "saddr %U sport %u daddr %U dport %u proto %U fib_idx %u",
+ format_ip4_address, t->saddr.as_u8,
+ clib_net_to_host_u16 (t->sport), format_ip4_address,
+ t->daddr.as_u8, clib_net_to_host_u16 (t->dport),
+ format_ip_protocol, t->proto, t->fib_index);
+ return s;
+}
+
+u8 *
+format_nat_ed_translation_error (u8 *s, va_list *args)
+{
+ nat_translation_error_e e = va_arg (*args, nat_translation_error_e);
+
+ switch (e)
+ {
+ case NAT_ED_TRNSL_ERR_SUCCESS:
+ s = format (s, "success");
+ break;
+ case NAT_ED_TRNSL_ERR_TRANSLATION_FAILED:
+ s = format (s, "translation-failed");
+ break;
+ case NAT_ED_TRNSL_ERR_FLOW_MISMATCH:
+ s = format (s, "flow-mismatch");
+ break;
+ }
+ return s;
+}
+
+u8 *
+format_nat_6t_flow (u8 *s, va_list *args)
+{
+ nat_6t_flow_t *f = va_arg (*args, nat_6t_flow_t *);
+
+ s = format (s, "match: %U ", format_nat_6t, &f->match);
+ int r = 0;
+ if (f->ops & NAT_FLOW_OP_SADDR_REWRITE)
+ {
+ s = format (s, "rewrite: saddr %U ", format_ip4_address,
+ f->rewrite.saddr.as_u8);
+ r = 1;
+ }
+ if (f->ops & NAT_FLOW_OP_SPORT_REWRITE)
+ {
+ if (!r)
+ {
+ s = format (s, "rewrite: ");
+ r = 1;
+ }
+ s = format (s, "sport %u ", clib_net_to_host_u16 (f->rewrite.sport));
+ }
+ if (f->ops & NAT_FLOW_OP_DADDR_REWRITE)
+ {
+ if (!r)
+ {
+ s = format (s, "rewrite: ");
+ r = 1;
+ }
+ s = format (s, "daddr %U ", format_ip4_address, f->rewrite.daddr.as_u8);
+ }
+ if (f->ops & NAT_FLOW_OP_DPORT_REWRITE)
+ {
+ if (!r)
+ {
+ s = format (s, "rewrite: ");
+ r = 1;
+ }
+ s = format (s, "dport %u ", clib_net_to_host_u16 (f->rewrite.dport));
+ }
+ if (f->ops & NAT_FLOW_OP_ICMP_ID_REWRITE)
+ {
+ if (!r)
+ {
+ s = format (s, "rewrite: ");
+ r = 1;
+ }
+ s = format (s, "icmp-id %u ", clib_net_to_host_u16 (f->rewrite.icmp_id));
+ }
+ if (f->ops & NAT_FLOW_OP_TXFIB_REWRITE)
+ {
+ if (!r)
+ {
+ s = format (s, "rewrite: ");
+ r = 1;
+ }
+ s = format (s, "txfib %u ", f->rewrite.fib_index);
+ }
+ return s;
+}
+
/*
* fd.io coding-style-patch-verification: ON
*
Code Review / vpp.git / blobdiff