#include <vppinfra/bihash_16_8.h>
#include <nat/lib/log.h>
-#include <nat/lib/nat_syslog.h>
#include <nat/lib/nat_inlines.h>
#include <nat/lib/ipfix_logging.h>
+#include <vnet/syslog/syslog.h>
+#include <nat/lib/nat_syslog_constants.h>
+#include <nat/lib/nat_syslog.h>
#include <nat/nat44-ed/nat44_ed.h>
#include <nat/nat44-ed/nat44_ed_affinity.h>
#include <nat/nat44-ed/nat44_ed_inlines.h>
-#include <vpp/stats/stat_segment.h>
+#include <vlib/stats/stats.h>
snat_main_t snat_main;
};
static void nat44_ed_db_init (u32 translations, u32 translation_buckets);
-
-static void nat44_ed_db_free ();
+static void nat44_ed_worker_db_free (snat_main_per_thread_data_t *tsm);
+
+static int nat44_ed_add_static_mapping_internal (
+ ip4_address_t l_addr, ip4_address_t e_addr, u16 l_port, u16 e_port,
+ ip_protocol_t proto, u32 vrf_id, u32 sw_if_index, u32 flags,
+ ip4_address_t pool_addr, u8 *tag);
+static int nat44_ed_del_static_mapping_internal (ip4_address_t l_addr,
+ ip4_address_t e_addr,
+ u16 l_port, u16 e_port,
+ ip_protocol_t proto,
+ u32 vrf_id, u32 flags);
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 thread-index %llu session-index %llu", format_snat_key,
- v->key, nat_value_get_thread_index (v),
- nat_value_get_session_index (v));
-
- 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_ed_session_kvp (u8 * s, va_list * args)
{
return s;
}
+static_always_inline int
+nat44_ed_sm_i2o_add (snat_main_t *sm, snat_static_mapping_t *m,
+ ip4_address_t addr, u16 port, u32 fib_index, u8 proto)
+{
+ ASSERT (!pool_is_free (sm->static_mappings, m));
+ clib_bihash_kv_16_8_t kv;
+ nat44_ed_sm_init_i2o_kv (&kv, addr.as_u32, port, fib_index, proto,
+ m - sm->static_mappings);
+ return clib_bihash_add_del_16_8 (&sm->flow_hash, &kv, 1 /*is_add*/);
+}
+
+static_always_inline int
+nat44_ed_sm_i2o_del (snat_main_t *sm, ip4_address_t addr, u16 port,
+ u32 fib_index, u8 proto)
+{
+ clib_bihash_kv_16_8_t kv;
+ nat44_ed_sm_init_i2o_k (&kv, addr.as_u32, port, fib_index, proto);
+ return clib_bihash_add_del_16_8 (&sm->flow_hash, &kv, 0 /*is_add*/);
+}
+
+static_always_inline int
+nat44_ed_sm_o2i_add (snat_main_t *sm, snat_static_mapping_t *m,
+ ip4_address_t addr, u16 port, u32 fib_index, u8 proto)
+{
+ ASSERT (!pool_is_free (sm->static_mappings, m));
+ clib_bihash_kv_16_8_t kv;
+ nat44_ed_sm_init_o2i_kv (&kv, addr.as_u32, port, fib_index, proto,
+ m - sm->static_mappings);
+ return clib_bihash_add_del_16_8 (&sm->flow_hash, &kv, 1 /*is_add*/);
+}
+
+static_always_inline int
+nat44_ed_sm_o2i_del (snat_main_t *sm, ip4_address_t addr, u16 port,
+ u32 fib_index, u8 proto)
+{
+ clib_bihash_kv_16_8_t kv;
+ nat44_ed_sm_init_o2i_k (&kv, addr.as_u32, port, fib_index, proto);
+ return clib_bihash_add_del_16_8 (&sm->flow_hash, &kv, 0 /*is_add*/);
+}
+
void
-nat_free_session_data (snat_main_t * sm, snat_session_t * s, u32 thread_index,
- u8 is_ha)
+nat44_ed_free_session_data (snat_main_t *sm, snat_session_t *s,
+ u32 thread_index, u8 is_ha)
{
- per_vrf_sessions_unregister_session (s, thread_index);
+ 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 (sm, "flow hash del failed");
+ if (nat_ed_ses_i2o_flow_hash_add_del (sm, thread_index, s, 0))
+ nat_elog_warn (sm, "flow hash del failed");
- if (nat_ed_ses_o2i_flow_hash_add_del (sm, thread_index, s, 0))
- nat_elog_warn (sm, "flow hash del failed");
+ if (nat_ed_ses_o2i_flow_hash_add_del (sm, thread_index, s, 0))
+ nat_elog_warn (sm, "flow hash del failed");
- if (is_fwd_bypass_session (s))
+ if (na44_ed_is_fwd_bypass_session (s))
{
return;
}
- if (is_affinity_sessions (s))
- nat_affinity_unlock (s->ext_host_addr, s->out2in.addr,
- s->nat_proto, s->out2in.port);
-
- if (!is_ha)
- nat_syslog_nat44_sdel (
- 0, 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 (nat44_ed_is_affinity_session (s))
+ nat_affinity_unlock (s->ext_host_addr, s->out2in.addr, s->proto,
+ s->out2in.port);
- if (snat_is_unk_proto_session (s))
- return;
+ if (!is_ha)
+ nat_syslog_nat44_sdel (0, 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->proto, nat44_ed_is_twice_nat_session (s));
if (!is_ha)
{
/* log NAT event */
- nat_ipfix_logging_nat44_ses_delete (thread_index,
- s->in2out.addr.as_u32,
- s->out2in.addr.as_u32,
- s->nat_proto,
- s->in2out.port,
- s->out2in.port,
- s->in2out.fib_index);
- }
-
- /* 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);
+ nat_ipfix_logging_nat44_ses_delete (
+ thread_index, s->in2out.addr.as_u32, s->out2in.addr.as_u32, s->proto,
+ s->in2out.port, s->out2in.port, s->in2out.fib_index);
}
-
- 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);
}
-void
-snat_add_del_addr_to_fib (ip4_address_t * addr, u8 p_len, u32 sw_if_index,
- int is_add)
+static ip_interface_address_t *
+nat44_ed_get_ip_interface_address (u32 sw_if_index, ip4_address_t addr)
{
snat_main_t *sm = &snat_main;
- fib_prefix_t prefix = {
- .fp_len = p_len,
- .fp_proto = FIB_PROTOCOL_IP4,
- .fp_addr = {
- .ip4.as_u32 = addr->as_u32,
- },
- };
- u32 fib_index = ip4_fib_table_get_index_for_sw_if_index (sw_if_index);
- if (is_add)
- fib_table_entry_update_one_path (fib_index,
- &prefix,
- sm->fib_src_low,
- (FIB_ENTRY_FLAG_CONNECTED |
- FIB_ENTRY_FLAG_LOCAL |
- FIB_ENTRY_FLAG_EXCLUSIVE),
- DPO_PROTO_IP4,
- NULL,
- sw_if_index,
- ~0, 1, NULL, FIB_ROUTE_PATH_FLAG_NONE);
- else
- fib_table_entry_delete (fib_index, &prefix, sm->fib_src_low);
+ ip_lookup_main_t *lm = &sm->ip4_main->lookup_main;
+ ip_interface_address_t *ia;
+ ip4_address_t *ip4a;
+
+ foreach_ip_interface_address (
+ lm, ia, sw_if_index, 1, ({
+ ip4a = ip_interface_address_get_address (lm, ia);
+ nat_log_debug ("sw_if_idx: %u addr: %U ? %U", sw_if_index,
+ format_ip4_address, ip4a, format_ip4_address, &addr);
+ if (ip4a->as_u32 == addr.as_u32)
+ {
+ return ia;
+ }
+ }));
+ return NULL;
}
-int
-snat_add_address (snat_main_t * sm, ip4_address_t * addr, u32 vrf_id,
- u8 twice_nat)
+static int
+nat44_ed_resolve_nat_addr_len (snat_address_t *ap,
+ snat_interface_t *interfaces)
{
- snat_address_t *ap;
+ ip_interface_address_t *ia;
snat_interface_t *i;
- vlib_thread_main_t *tm = vlib_get_thread_main ();
+ u32 fib_index;
- /* Check if address already exists */
- vec_foreach (ap, twice_nat ? sm->twice_nat_addresses : sm->addresses)
+ pool_foreach (i, interfaces)
{
- if (ap->addr.as_u32 == addr->as_u32)
- {
- nat_log_err ("address exist");
- return VNET_API_ERROR_VALUE_EXIST;
- }
- }
-
- if (twice_nat)
- vec_add2 (sm->twice_nat_addresses, ap, 1);
- else
- vec_add2 (sm->addresses, ap, 1);
-
- ap->addr = *addr;
- if (vrf_id != ~0)
- ap->fib_index =
- fib_table_find_or_create_and_lock (FIB_PROTOCOL_IP4, vrf_id,
- 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 (!nat44_ed_is_interface_outside (i))
+ {
+ continue;
+ }
- if (twice_nat)
- return 0;
+ fib_index = ip4_fib_table_get_index_for_sw_if_index (i->sw_if_index);
+ if (fib_index != ap->fib_index)
+ {
+ continue;
+ }
- /* Add external address to FIB */
- pool_foreach (i, sm->interfaces)
- {
- if (nat_interface_is_inside (i))
- continue;
+ if ((ia = nat44_ed_get_ip_interface_address (i->sw_if_index, ap->addr)))
+ {
+ ap->addr_len = ia->address_length;
+ ap->sw_if_index = i->sw_if_index;
+ ap->net.as_u32 = (ap->addr.as_u32 >> (32 - ap->addr_len))
+ << (32 - ap->addr_len);
+
+ nat_log_debug ("pool addr %U binds to -> sw_if_idx: %u net: %U/%u",
+ format_ip4_address, &ap->addr, ap->sw_if_index,
+ format_ip4_address, &ap->net, ap->addr_len);
+ return 0;
+ }
+ }
+ return 1;
+}
- snat_add_del_addr_to_fib (addr, 32, i->sw_if_index, 1);
- break;
- }
- pool_foreach (i, sm->output_feature_interfaces)
- {
- if (nat_interface_is_inside (i))
- continue;
+static void
+nat44_ed_update_outside_if_addresses (snat_address_t *ap)
+{
+ snat_main_t *sm = &snat_main;
- snat_add_del_addr_to_fib (addr, 32, i->sw_if_index, 1);
- break;
- }
+ if (!nat44_ed_resolve_nat_addr_len (ap, sm->interfaces))
+ {
+ return;
+ }
- return 0;
+ if (!nat44_ed_resolve_nat_addr_len (ap, sm->output_feature_interfaces))
+ {
+ return;
+ }
}
-static int
-is_snat_address_used_in_static_mapping (snat_main_t * sm, ip4_address_t addr)
+static void
+nat44_ed_bind_if_addr_to_nat_addr (u32 sw_if_index)
{
- snat_static_mapping_t *m;
- 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;
- }
+ snat_main_t *sm = &snat_main;
+ ip_interface_address_t *ia;
+ snat_address_t *ap;
- return 0;
-}
+ u32 fib_index = ip4_fib_table_get_index_for_sw_if_index (sw_if_index);
-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, u8 *tag, int twice_nat,
- int out2in_only, int identity_nat,
- ip4_address_t pool_addr, int exact)
-{
- snat_static_map_resolve_t *rp;
-
- vec_add2 (sm->to_resolve, rp, 1);
- rp->l_addr.as_u32 = l_addr.as_u32;
- rp->l_port = l_port;
- rp->sw_if_index = sw_if_index;
- rp->e_port = e_port;
- rp->vrf_id = vrf_id;
- rp->proto = proto;
- rp->addr_only = addr_only;
- 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;
+ vec_foreach (ap, sm->addresses)
+ {
+ if (fib_index != ap->fib_index)
+ {
+ continue;
+ }
+
+ if ((ia = nat44_ed_get_ip_interface_address (sw_if_index, ap->addr)))
+ {
+ ap->addr_len = ia->address_length;
+ ap->sw_if_index = sw_if_index;
+ ap->net.as_u32 = (ap->addr.as_u32 >> (32 - ap->addr_len))
+ << (32 - ap->addr_len);
+
+ nat_log_debug ("pool addr %U binds to -> sw_if_idx: %u net: %U/%u",
+ format_ip4_address, &ap->addr, ap->sw_if_index,
+ format_ip4_address, &ap->net, ap->addr_len);
+ return;
+ }
+ }
}
-u32
-get_thread_idx_by_port (u16 e_port)
+static_always_inline snat_fib_entry_reg_t *
+nat44_ed_get_fib_entry_reg (ip4_address_t addr, u32 sw_if_index, int *out_idx)
{
snat_main_t *sm = &snat_main;
- u32 thread_idx = sm->num_workers;
- if (sm->num_workers > 1)
+ snat_fib_entry_reg_t *fe;
+ int i;
+
+ for (i = 0; i < vec_len (sm->fib_entry_reg); i++)
{
- thread_idx =
- sm->first_worker_index +
- sm->workers[(e_port - 1024) / sm->port_per_thread];
+ fe = sm->fib_entry_reg + i;
+ if ((addr.as_u32 == fe->addr.as_u32) && (sw_if_index == fe->sw_if_index))
+ {
+ if (out_idx)
+ {
+ *out_idx = i;
+ }
+ return fe;
+ }
}
- return thread_idx;
+ return NULL;
}
-void
-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)
+static void
+nat44_ed_add_fib_entry_reg (ip4_address_t addr, u32 sw_if_index)
{
- snat_session_t *s;
- u32 *indexes_to_free = NULL;
- pool_foreach (s, tsm->sessions) {
- if (s->in2out.fib_index != fib_index ||
- s->in2out.addr.as_u32 != l_addr.as_u32)
- {
- continue;
- }
- if (!addr_only)
- {
- if ((s->out2in.addr.as_u32 != e_addr.as_u32) ||
- s->out2in.port != e_port ||
- s->in2out.port != l_port ||
- s->nat_proto != protocol)
- continue;
- }
+ // Add the external NAT address to the FIB as receive entries. This ensures
+ // that VPP will reply to ARP for this address and we don't need to enable
+ // proxy ARP on the outside interface.
+ snat_main_t *sm = &snat_main;
+ snat_fib_entry_reg_t *fe;
- 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);
- vec_add1 (indexes_to_free, s - tsm->sessions);
- if (!addr_only)
- break;
- }
- u32 *ses_index;
- vec_foreach (ses_index, indexes_to_free)
- {
- s = pool_elt_at_index (tsm->sessions, *ses_index);
- nat_ed_session_delete (sm, s, tsm - sm->per_thread_data, 1);
- }
- vec_free (indexes_to_free);
+ if (!(fe = nat44_ed_get_fib_entry_reg (addr, sw_if_index, 0)))
+ {
+ fib_prefix_t prefix = {
+ .fp_len = 32,
+ .fp_proto = FIB_PROTOCOL_IP4,
+ .fp_addr = {
+ .ip4.as_u32 = addr.as_u32,
+ },
+ };
+ u32 fib_index = ip4_fib_table_get_index_for_sw_if_index (sw_if_index);
+ fib_table_entry_update_one_path (fib_index, &prefix, sm->fib_src_low,
+ (FIB_ENTRY_FLAG_CONNECTED |
+ FIB_ENTRY_FLAG_LOCAL |
+ FIB_ENTRY_FLAG_EXCLUSIVE),
+ DPO_PROTO_IP4, NULL, sw_if_index, ~0, 1,
+ NULL, FIB_ROUTE_PATH_FLAG_NONE);
+
+ vec_add2 (sm->fib_entry_reg, fe, 1);
+ clib_memset (fe, 0, sizeof (*fe));
+ fe->addr.as_u32 = addr.as_u32;
+ fe->sw_if_index = sw_if_index;
+ }
+ fe->count++;
}
-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, ip4_address_t pool_addr, int exact)
+static void
+nat44_ed_del_fib_entry_reg (ip4_address_t addr, u32 sw_if_index)
{
snat_main_t *sm = &snat_main;
- snat_static_mapping_t *m;
- clib_bihash_kv_8_8_t kv, value;
- snat_address_t *a = 0;
- u32 fib_index = ~0;
- snat_interface_t *interface;
- snat_main_per_thread_data_t *tsm;
- snat_static_map_resolve_t *rp, *rp_match = 0;
- nat44_lb_addr_port_t *local;
- u32 find = ~0;
+ snat_fib_entry_reg_t *fe;
int i;
- /* If the external address is a specific interface address */
- if (sw_if_index != ~0)
+ if ((fe = nat44_ed_get_fib_entry_reg (addr, sw_if_index, &i)))
{
- ip4_address_t *first_int_addr;
-
- for (i = 0; i < vec_len (sm->to_resolve); i++)
+ fe->count--;
+ if (0 == fe->count)
{
- rp = sm->to_resolve + i;
- if (rp->sw_if_index != sw_if_index ||
- rp->l_addr.as_u32 != l_addr.as_u32 ||
- rp->vrf_id != vrf_id || rp->addr_only != addr_only)
- continue;
-
- if (!addr_only)
- {
- if ((rp->l_port != l_port && rp->e_port != e_port)
- || rp->proto != proto)
- continue;
- }
-
- rp_match = rp;
- break;
+ fib_prefix_t prefix = {
+ .fp_len = 32,
+ .fp_proto = FIB_PROTOCOL_IP4,
+ .fp_addr = {
+ .ip4.as_u32 = addr.as_u32,
+ },
+ };
+ u32 fib_index =
+ ip4_fib_table_get_index_for_sw_if_index (sw_if_index);
+ fib_table_entry_delete (fib_index, &prefix, sm->fib_src_low);
+ vec_del1 (sm->fib_entry_reg, i);
}
+ }
+}
- /* Might be already set... */
- first_int_addr = ip4_interface_first_address
- (sm->ip4_main, sw_if_index, 0 /* just want the address */ );
+static void
+nat44_ed_add_del_interface_fib_reg_entries (ip4_address_t addr, u8 is_add)
+{
+ snat_main_t *sm = &snat_main;
+ snat_interface_t *i;
- if (is_add)
+ pool_foreach (i, sm->interfaces)
+ {
+ if (nat44_ed_is_interface_outside (i))
{
- 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,
- tag, twice_nat, out2in_only, identity_nat, pool_addr, exact);
-
- /* DHCP resolution required? */
- if (first_int_addr == 0)
+ if (is_add)
{
- return 0;
+ nat44_ed_add_fib_entry_reg (addr, i->sw_if_index);
}
else
{
- e_addr.as_u32 = first_int_addr->as_u32;
- /* Identity mapping? */
- if (l_addr.as_u32 == 0)
- l_addr.as_u32 = e_addr.as_u32;
+ nat44_ed_del_fib_entry_reg (addr, i->sw_if_index);
}
}
- else
+ }
+ pool_foreach (i, sm->output_feature_interfaces)
+ {
+ if (nat44_ed_is_interface_outside (i))
{
- if (!rp_match)
- return VNET_API_ERROR_NO_SUCH_ENTRY;
-
- vec_del1 (sm->to_resolve, i);
-
- if (first_int_addr)
+ if (is_add)
{
- e_addr.as_u32 = first_int_addr->as_u32;
- /* Identity mapping? */
- if (l_addr.as_u32 == 0)
- l_addr.as_u32 = e_addr.as_u32;
+ nat44_ed_add_fib_entry_reg (addr, i->sw_if_index);
}
else
- return 0;
+ {
+ nat44_ed_del_fib_entry_reg (addr, i->sw_if_index);
+ }
}
}
+}
- init_nat_k (&kv, e_addr, addr_only ? 0 : e_port, 0, addr_only ? 0 : proto);
- if (clib_bihash_search_8_8 (&sm->static_mapping_by_external, &kv, &value))
- m = 0;
- else
- m = pool_elt_at_index (sm->static_mappings, value.value);
+static_always_inline void
+nat44_ed_add_del_nat_addr_fib_reg_entries (u32 sw_if_index, u8 is_add)
+{
+ snat_main_t *sm = &snat_main;
+ snat_address_t *ap;
- if (is_add)
+ vec_foreach (ap, sm->addresses)
{
- if (m)
+ if (is_add)
{
- if (is_identity_static_mapping (m))
- {
- pool_foreach (local, m->locals)
- {
- if (local->vrf_id == vrf_id)
- return VNET_API_ERROR_VALUE_EXIST;
- }
- pool_get (m->locals, local);
- local->vrf_id = vrf_id;
- local->fib_index =
- fib_table_find_or_create_and_lock (FIB_PROTOCOL_IP4, vrf_id,
- sm->fib_src_low);
- init_nat_kv (&kv, m->local_addr, m->local_port, local->fib_index,
- m->proto, 0, m - sm->static_mappings);
- clib_bihash_add_del_8_8 (&sm->static_mapping_by_local, &kv, 1);
- return 0;
- }
- else
- return VNET_API_ERROR_VALUE_EXIST;
+ nat44_ed_add_fib_entry_reg (ap->addr, sw_if_index);
}
-
- if (twice_nat && addr_only)
- return VNET_API_ERROR_UNSUPPORTED;
-
- /* Convert VRF id to FIB index */
- if (vrf_id != ~0)
- fib_index =
- fib_table_find_or_create_and_lock (FIB_PROTOCOL_IP4, vrf_id,
- 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, sm->fib_src_low);
+ nat44_ed_del_fib_entry_reg (ap->addr, sw_if_index);
}
+ }
+}
- if (!(out2in_only || identity_nat))
- {
- init_nat_k (&kv, l_addr, addr_only ? 0 : l_port, fib_index,
- addr_only ? 0 : proto);
- if (!clib_bihash_search_8_8
- (&sm->static_mapping_by_local, &kv, &value))
- return VNET_API_ERROR_VALUE_EXIST;
- }
+static_always_inline void
+nat44_ed_add_del_sm_fib_reg_entries (u32 sw_if_index, u8 is_add)
+{
+ snat_main_t *sm = &snat_main;
+ snat_static_mapping_t *m;
- /* Find external address in allocated addresses and reserve port for
- address and port pair mapping when dynamic translations enabled */
- if (!(addr_only || sm->static_mapping_only || out2in_only))
+ pool_foreach (m, sm->static_mappings)
+ {
+ if (is_add)
{
- for (i = 0; i < vec_len (sm->addresses); i++)
- {
- if (sm->addresses[i].addr.as_u32 == e_addr.as_u32)
- {
- a = sm->addresses + i;
- /* External port must be unused */
- switch (proto)
- {
-#define _(N, j, n, s) \
- case NAT_PROTOCOL_##N: \
- if (a->busy_##n##_port_refcounts[e_port]) \
- return VNET_API_ERROR_INVALID_VALUE; \
- ++a->busy_##n##_port_refcounts[e_port]; \
- if (e_port > 1024) \
- { \
- a->busy_##n##_ports++; \
- a->busy_##n##_ports_per_thread[get_thread_idx_by_port(e_port)]++; \
- } \
- break;
- foreach_nat_protocol
-#undef _
- default : nat_elog_info (sm, "unknown protocol");
- return VNET_API_ERROR_INVALID_VALUE_2;
- }
- break;
- }
- }
- /* External address must be allocated */
- if (!a && (l_addr.as_u32 != e_addr.as_u32))
- {
- if (sw_if_index != ~0)
- {
- for (i = 0; i < vec_len (sm->to_resolve); i++)
- {
- rp = sm->to_resolve + i;
- if (rp->addr_only)
- continue;
- if (rp->sw_if_index != sw_if_index &&
- rp->l_addr.as_u32 != l_addr.as_u32 &&
- rp->vrf_id != vrf_id && rp->l_port != l_port &&
- rp->e_port != e_port && rp->proto != proto)
- continue;
-
- vec_del1 (sm->to_resolve, i);
- break;
- }
- }
- return VNET_API_ERROR_NO_SUCH_ENTRY;
- }
+ nat44_ed_add_fib_entry_reg (m->external_addr, sw_if_index);
}
-
- pool_get (sm->static_mappings, m);
- clib_memset (m, 0, sizeof (*m));
- m->tag = vec_dup (tag);
- m->local_addr = l_addr;
- m->external_addr = e_addr;
- m->twice_nat = twice_nat;
-
- if (twice_nat == TWICE_NAT && exact)
+ else
{
- m->flags |= NAT_STATIC_MAPPING_FLAG_EXACT_ADDRESS;
- m->pool_addr = pool_addr;
+ nat44_ed_del_fib_entry_reg (m->external_addr, sw_if_index);
}
+ }
+}
- if (out2in_only)
- m->flags |= NAT_STATIC_MAPPING_FLAG_OUT2IN_ONLY;
- if (addr_only)
- m->flags |= NAT_STATIC_MAPPING_FLAG_ADDR_ONLY;
- if (identity_nat)
+int
+nat44_ed_add_address (ip4_address_t *addr, u32 vrf_id, u8 twice_nat)
+{
+ snat_main_t *sm = &snat_main;
+ snat_address_t *ap, *addresses;
+
+ addresses = twice_nat ? sm->twice_nat_addresses : sm->addresses;
+
+ if (!sm->enabled)
+ {
+ return VNET_API_ERROR_UNSUPPORTED;
+ }
+
+ // check if address already exists
+ vec_foreach (ap, addresses)
+ {
+ if (ap->addr.as_u32 == addr->as_u32)
+ {
+ nat_log_err ("address exist");
+ return VNET_API_ERROR_VALUE_EXIST;
+ }
+ }
+
+ if (twice_nat)
+ {
+ vec_add2 (sm->twice_nat_addresses, ap, 1);
+ }
+ else
+ {
+ vec_add2 (sm->addresses, ap, 1);
+ }
+
+ ap->addr_len = ~0;
+ ap->fib_index = ~0;
+ ap->addr = *addr;
+
+ if (vrf_id != ~0)
+ {
+ ap->fib_index = fib_table_find_or_create_and_lock (
+ FIB_PROTOCOL_IP4, vrf_id, sm->fib_src_low);
+ }
+
+ if (!twice_nat)
+ {
+ // if we don't have enabled interface we don't add address
+ // to fib
+ nat44_ed_add_del_interface_fib_reg_entries (*addr, 1);
+ nat44_ed_update_outside_if_addresses (ap);
+ }
+ return 0;
+}
+
+int
+nat44_ed_del_address (ip4_address_t addr, u8 twice_nat)
+{
+ snat_main_t *sm = &snat_main;
+ snat_address_t *a = 0, *addresses;
+ snat_session_t *ses;
+ u32 *ses_to_be_removed = 0, *ses_index;
+ snat_main_per_thread_data_t *tsm;
+ int j;
+
+ addresses = twice_nat ? sm->twice_nat_addresses : sm->addresses;
+
+ for (j = 0; j < vec_len (addresses); j++)
+ {
+ if (addresses[j].addr.as_u32 == addr.as_u32)
{
- m->flags |= NAT_STATIC_MAPPING_FLAG_IDENTITY_NAT;
- pool_get (m->locals, local);
- local->vrf_id = vrf_id;
- local->fib_index = fib_index;
+ a = addresses + j;
+ break;
}
- else
+ }
+ if (!a)
+ {
+ nat_log_err ("no such address");
+ return VNET_API_ERROR_NO_SUCH_ENTRY;
+ }
+
+ // delete dynamic sessions only
+ vec_foreach (tsm, sm->per_thread_data)
+ {
+ pool_foreach (ses, tsm->sessions)
{
- m->vrf_id = vrf_id;
- m->fib_index = fib_index;
+ if (ses->flags & SNAT_SESSION_FLAG_STATIC_MAPPING)
+ {
+ continue;
+ }
+ if (ses->out2in.addr.as_u32 == addr.as_u32)
+ {
+ nat44_ed_free_session_data (sm, ses, tsm - sm->per_thread_data,
+ 0);
+ vec_add1 (ses_to_be_removed, ses - tsm->sessions);
+ }
}
- if (!addr_only)
+ vec_foreach (ses_index, ses_to_be_removed)
{
- m->local_port = l_port;
- m->external_port = e_port;
- m->proto = proto;
+ ses = pool_elt_at_index (tsm->sessions, ses_index[0]);
+ nat_ed_session_delete (sm, ses, tsm - sm->per_thread_data, 1);
}
+ vec_free (ses_to_be_removed);
+ }
- if (sm->num_workers > 1)
+ if (!twice_nat)
+ {
+ nat44_ed_add_del_interface_fib_reg_entries (addr, 0);
+ }
+
+ if (a->fib_index != ~0)
+ {
+ fib_table_unlock (a->fib_index, FIB_PROTOCOL_IP4, sm->fib_src_low);
+ }
+
+ if (!twice_nat)
+ {
+ vec_del1 (sm->addresses, j);
+ }
+ else
+ {
+ vec_del1 (sm->twice_nat_addresses, j);
+ }
+
+ return 0;
+}
+
+u32
+get_thread_idx_by_port (u16 e_port)
+{
+ snat_main_t *sm = &snat_main;
+ u32 thread_idx = sm->num_workers;
+ if (sm->num_workers > 1)
+ {
+ thread_idx =
+ sm->first_worker_index +
+ sm->workers[(e_port - 1024) / sm->port_per_thread];
+ }
+ return thread_idx;
+}
+
+void
+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;
+ pool_foreach (s, tsm->sessions) {
+ if (s->in2out.fib_index != fib_index ||
+ s->in2out.addr.as_u32 != l_addr.as_u32)
+ {
+ continue;
+ }
+ if (!addr_only)
+ {
+ if ((s->out2in.addr.as_u32 != e_addr.as_u32) ||
+ s->out2in.port != e_port || s->in2out.port != l_port ||
+ s->proto != protocol)
+ continue;
+ }
+
+ if (nat44_ed_is_lb_session (s))
+ continue;
+ if (!nat44_ed_is_session_static (s))
+ continue;
+ nat44_ed_free_session_data (sm, s, tsm - sm->per_thread_data, 0);
+ vec_add1 (indexes_to_free, s - tsm->sessions);
+ if (!addr_only)
+ break;
+ }
+ u32 *ses_index;
+ vec_foreach (ses_index, indexes_to_free)
+ {
+ s = pool_elt_at_index (tsm->sessions, *ses_index);
+ nat_ed_session_delete (sm, s, tsm - sm->per_thread_data, 1);
+ }
+ vec_free (indexes_to_free);
+}
+
+static_always_inline snat_static_mapping_t *
+nat44_ed_sm_lookup (snat_main_t *sm, clib_bihash_kv_16_8_t *kv)
+{
+ clib_bihash_kv_16_8_t v;
+ int rc = clib_bihash_search_16_8 (&sm->flow_hash, kv, &v);
+ if (!rc)
+ {
+ ASSERT (0 == ed_value_get_thread_index (&v));
+ return pool_elt_at_index (sm->static_mappings,
+ ed_value_get_session_index (&v));
+ }
+ return NULL;
+}
+
+snat_static_mapping_t *
+nat44_ed_sm_o2i_lookup (snat_main_t *sm, ip4_address_t addr, u16 port,
+ u32 fib_index, u8 proto)
+{
+ clib_bihash_kv_16_8_t kv;
+ nat44_ed_sm_init_o2i_k (&kv, addr.as_u32, port, fib_index, proto);
+ return nat44_ed_sm_lookup (sm, &kv);
+}
+
+snat_static_mapping_t *
+nat44_ed_sm_i2o_lookup (snat_main_t *sm, ip4_address_t addr, u16 port,
+ u32 fib_index, u8 proto)
+{
+ clib_bihash_kv_16_8_t kv;
+ nat44_ed_sm_init_i2o_k (&kv, addr.as_u32, port, fib_index, proto);
+ return nat44_ed_sm_lookup (sm, &kv);
+}
+
+static snat_static_mapping_resolve_t *
+nat44_ed_get_resolve_record (ip4_address_t l_addr, u16 l_port, u16 e_port,
+ ip_protocol_t proto, u32 vrf_id, u32 sw_if_index,
+ u32 flags, int *out_idx)
+{
+ snat_static_mapping_resolve_t *rp;
+ snat_main_t *sm = &snat_main;
+ int i;
+
+ for (i = 0; i < vec_len (sm->sm_to_resolve); i++)
+ {
+ rp = sm->sm_to_resolve + i;
+
+ if (rp->sw_if_index == sw_if_index && rp->vrf_id == vrf_id)
{
- ip4_header_t ip = {
- .src_address = m->local_addr,
- };
- vec_add1 (m->workers, nat44_ed_get_in2out_worker_index (
- 0, &ip, m->fib_index, 0));
- tsm = vec_elt_at_index (sm->per_thread_data, m->workers[0]);
+ if (is_sm_identity_nat (rp->flags) && is_sm_identity_nat (flags))
+ {
+ if (!(is_sm_addr_only (rp->flags) && is_sm_addr_only (flags)))
+ {
+ if (rp->e_port != e_port || rp->proto != proto)
+ {
+ continue;
+ }
+ }
+ }
+ else if (rp->l_addr.as_u32 == l_addr.as_u32)
+ {
+ if (!(is_sm_addr_only (rp->flags) && is_sm_addr_only (flags)))
+ {
+ if (rp->l_port != l_port || rp->e_port != e_port ||
+ rp->proto != proto)
+ {
+ continue;
+ }
+ }
+ }
+ else
+ {
+ continue;
+ }
+ if (out_idx)
+ {
+ *out_idx = i;
+ }
+ return rp;
}
- else
- tsm = vec_elt_at_index (sm->per_thread_data, sm->num_workers);
+ }
+ return NULL;
+}
- if (!out2in_only)
+static int
+nat44_ed_del_resolve_record (ip4_address_t l_addr, u16 l_port, u16 e_port,
+ ip_protocol_t proto, u32 vrf_id, u32 sw_if_index,
+ u32 flags)
+{
+ snat_main_t *sm = &snat_main;
+ int i;
+ if (nat44_ed_get_resolve_record (l_addr, l_port, e_port, proto, vrf_id,
+ sw_if_index, flags, &i))
+ {
+ vec_del1 (sm->sm_to_resolve, i);
+ return 0;
+ }
+ return 1;
+}
+
+static_always_inline int
+nat44_ed_validate_sm_input (u32 flags)
+{
+ // identity nat can be initiated only from inside interface
+ if (is_sm_identity_nat (flags) && is_sm_out2in_only (flags))
+ {
+ return VNET_API_ERROR_UNSUPPORTED;
+ }
+
+ if (is_sm_twice_nat (flags) || is_sm_self_twice_nat (flags))
+ {
+ if (is_sm_addr_only (flags) || is_sm_identity_nat (flags))
{
- init_nat_kv (&kv, m->local_addr, m->local_port, fib_index, m->proto,
- 0, m - sm->static_mappings);
- clib_bihash_add_del_8_8 (&sm->static_mapping_by_local, &kv, 1);
+ return VNET_API_ERROR_UNSUPPORTED;
}
+ }
+ return 0;
+}
- init_nat_kv (&kv, m->external_addr, m->external_port, 0, m->proto, 0,
- m - sm->static_mappings);
- clib_bihash_add_del_8_8 (&sm->static_mapping_by_external, &kv, 1);
+int
+nat44_ed_add_static_mapping (ip4_address_t l_addr, ip4_address_t e_addr,
+ u16 l_port, u16 e_port, ip_protocol_t proto,
+ u32 vrf_id, u32 sw_if_index, u32 flags,
+ ip4_address_t pool_addr, u8 *tag)
+{
+ snat_static_mapping_resolve_t *rp;
+ snat_main_t *sm = &snat_main;
+ int rv;
+
+ if (!sm->enabled)
+ {
+ return VNET_API_ERROR_UNSUPPORTED;
}
- else
+
+ rv = nat44_ed_validate_sm_input (flags);
+ if (rv != 0)
+ {
+ return rv;
+ }
+
+ // interface bound mapping
+ if (is_sm_switch_address (flags))
{
- if (!m)
+ if (nat44_ed_get_resolve_record (l_addr, l_port, e_port, proto, vrf_id,
+ sw_if_index, flags, 0))
{
- if (sw_if_index != ~0)
- return 0;
- else
- return VNET_API_ERROR_NO_SUCH_ENTRY;
+ return VNET_API_ERROR_VALUE_EXIST;
}
- if (identity_nat)
+ vec_add2 (sm->sm_to_resolve, rp, 1);
+ rp->l_addr.as_u32 = l_addr.as_u32;
+ rp->l_port = l_port;
+ rp->e_port = e_port;
+ rp->sw_if_index = sw_if_index;
+ rp->vrf_id = vrf_id;
+ rp->proto = proto;
+ rp->flags = flags;
+ rp->pool_addr = pool_addr;
+ rp->tag = vec_dup (tag);
+ rp->is_resolved = 0;
+
+ ip4_address_t *first_int_addr =
+ ip4_interface_first_address (sm->ip4_main, sw_if_index, 0);
+ if (!first_int_addr)
{
- if (vrf_id == ~0)
- vrf_id = sm->inside_vrf_id;
+ return 0;
+ }
- pool_foreach (local, m->locals)
- {
- if (local->vrf_id == vrf_id)
- find = local - m->locals;
- }
- if (find == ~0)
- return VNET_API_ERROR_NO_SUCH_ENTRY;
+ e_addr.as_u32 = first_int_addr->as_u32;
+ rp->is_resolved = 1;
+ }
+
+ rv = nat44_ed_add_static_mapping_internal (l_addr, e_addr, l_port, e_port,
+ proto, vrf_id, sw_if_index, flags,
+ pool_addr, tag);
+ if ((0 != rv) && is_sm_switch_address (flags))
+ {
+ nat44_ed_del_resolve_record (l_addr, l_port, e_port, proto, vrf_id,
+ sw_if_index, flags);
+ }
+
+ return rv;
+}
+
+int
+nat44_ed_del_static_mapping (ip4_address_t l_addr, ip4_address_t e_addr,
+ u16 l_port, u16 e_port, ip_protocol_t proto,
+ u32 vrf_id, u32 sw_if_index, u32 flags)
+{
+ snat_main_t *sm = &snat_main;
+ int rv;
+
+ if (!sm->enabled)
+ {
+ return VNET_API_ERROR_UNSUPPORTED;
+ }
+
+ rv = nat44_ed_validate_sm_input (flags);
+ if (rv != 0)
+ {
+ return rv;
+ }
+
+ // interface bound mapping
+ if (is_sm_switch_address (flags))
+ {
+ if (nat44_ed_del_resolve_record (l_addr, l_port, e_port, proto, vrf_id,
+ sw_if_index, flags))
+ {
+ return VNET_API_ERROR_NO_SUCH_ENTRY;
+ }
+
+ ip4_address_t *first_int_addr =
+ ip4_interface_first_address (sm->ip4_main, sw_if_index, 0);
+ if (!first_int_addr)
+ {
+ // dhcp resolution required
+ return 0;
+ }
+
+ e_addr.as_u32 = first_int_addr->as_u32;
+ }
+
+ return nat44_ed_del_static_mapping_internal (l_addr, e_addr, l_port, e_port,
+ proto, vrf_id, flags);
+}
+
+static int
+nat44_ed_add_static_mapping_internal (ip4_address_t l_addr,
+ ip4_address_t e_addr, u16 l_port,
+ u16 e_port, ip_protocol_t proto,
+ u32 vrf_id, u32 sw_if_index, u32 flags,
+ ip4_address_t pool_addr, u8 *tag)
+{
+ snat_main_t *sm = &snat_main;
+ nat44_lb_addr_port_t *local;
+ snat_static_mapping_t *m;
+ u32 fib_index = ~0;
+
+ if (is_sm_addr_only (flags))
+ {
+ e_port = l_port = proto = 0;
+ }
+
+ if (is_sm_identity_nat (flags))
+ {
+ l_port = e_port;
+ l_addr.as_u32 = e_addr.as_u32;
+ }
+
+ m = nat44_ed_sm_o2i_lookup (sm, e_addr, e_port, 0, proto);
+ if (m)
+ {
+ // case:
+ // adding local identity nat record for different vrf table
+
+ if (!is_sm_identity_nat (m->flags))
+ {
+ return VNET_API_ERROR_VALUE_EXIST;
+ }
+
+ pool_foreach (local, m->locals)
+ {
+ if (local->vrf_id == vrf_id)
+ {
+ return VNET_API_ERROR_VALUE_EXIST;
+ }
+ }
+
+ pool_get (m->locals, local);
+
+ local->vrf_id = vrf_id;
+ local->fib_index = fib_table_find_or_create_and_lock (
+ FIB_PROTOCOL_IP4, vrf_id, sm->fib_src_low);
+
+ nat44_ed_sm_i2o_add (sm, m, m->local_addr, m->local_port,
+ local->fib_index, m->proto);
+
+ return 0;
+ }
+
+ if (vrf_id != ~0)
+ {
+ fib_index = fib_table_find_or_create_and_lock (FIB_PROTOCOL_IP4, vrf_id,
+ sm->fib_src_low);
+ }
+ else
+ {
+ // fallback to default vrf
+ vrf_id = sm->inside_vrf_id;
+ fib_index = sm->inside_fib_index;
+ fib_table_lock (fib_index, FIB_PROTOCOL_IP4, sm->fib_src_low);
+ }
+
+ // test if local mapping record doesn't exist
+ // identity nat supports multiple records in local mapping
+ if (!(is_sm_out2in_only (flags) || is_sm_identity_nat (flags)))
+ {
+ if (nat44_ed_sm_i2o_lookup (sm, l_addr, l_port, fib_index, proto))
+ {
+ return VNET_API_ERROR_VALUE_EXIST;
+ }
+ }
+
+ pool_get (sm->static_mappings, m);
+ clib_memset (m, 0, sizeof (*m));
+
+ m->flags = flags;
+ m->local_addr = l_addr;
+ m->external_addr = e_addr;
+
+ m->pool_addr = pool_addr;
+ m->tag = vec_dup (tag);
+
+ if (!is_sm_addr_only (flags))
+ {
+ m->local_port = l_port;
+ m->external_port = e_port;
+ m->proto = proto;
+ }
+
+ if (is_sm_identity_nat (flags))
+ {
+ pool_get (m->locals, local);
+
+ local->vrf_id = vrf_id;
+ local->fib_index = fib_index;
+ }
+ else
+ {
+ m->vrf_id = vrf_id;
+ m->fib_index = fib_index;
+ }
+
+ if (!is_sm_out2in_only (flags))
+ {
+ nat44_ed_sm_i2o_add (sm, m, m->local_addr, m->local_port, fib_index,
+ m->proto);
+ }
+
+ nat44_ed_sm_o2i_add (sm, m, m->external_addr, m->external_port, 0, m->proto);
+
+ if (sm->num_workers > 1)
+ {
+ // store worker index for this record
+ ip4_header_t ip = {
+ .src_address = m->local_addr,
+ };
+ u32 worker_index;
+ worker_index =
+ nat44_ed_get_in2out_worker_index (0, &ip, m->fib_index, 0);
+ vec_add1 (m->workers, worker_index);
+ }
+
+ nat44_ed_add_del_interface_fib_reg_entries (e_addr, 1);
+
+ return 0;
+}
+
+static int
+nat44_ed_del_static_mapping_internal (ip4_address_t l_addr,
+ ip4_address_t e_addr, u16 l_port,
+ u16 e_port, ip_protocol_t proto,
+ u32 vrf_id, u32 flags)
+{
+ snat_main_per_thread_data_t *tsm;
+ snat_main_t *sm = &snat_main;
+
+ nat44_lb_addr_port_t *local;
+ snat_static_mapping_t *m;
+ u32 fib_index = ~0;
+
+ if (is_sm_addr_only (flags))
+ {
+ e_port = l_port = proto = 0;
+ }
+
+ if (is_sm_identity_nat (flags))
+ {
+ l_port = e_port;
+ l_addr.as_u32 = e_addr.as_u32;
+ }
+
+ // fib index 0
+ m = nat44_ed_sm_o2i_lookup (sm, e_addr, e_port, 0, proto);
+ if (!m)
+ {
+ return VNET_API_ERROR_NO_SUCH_ENTRY;
+ }
+
+ if (is_sm_identity_nat (flags))
+ {
+ u8 found = 0;
- local = pool_elt_at_index (m->locals, find);
- fib_index = local->fib_index;
- pool_put (m->locals, local);
+ if (vrf_id == ~0)
+ {
+ vrf_id = sm->inside_vrf_id;
}
- else
- fib_index = m->fib_index;
- /* Free external address port */
- if (!(addr_only || sm->static_mapping_only || out2in_only))
+ pool_foreach (local, m->locals)
{
- for (i = 0; i < vec_len (sm->addresses); i++)
+ if (local->vrf_id == vrf_id)
{
- if (sm->addresses[i].addr.as_u32 == e_addr.as_u32)
- {
- a = sm->addresses + i;
- switch (proto)
- {
-#define _(N, j, n, s) \
- case NAT_PROTOCOL_##N: \
- --a->busy_##n##_port_refcounts[e_port]; \
- if (e_port > 1024) \
- { \
- a->busy_##n##_ports--; \
- a->busy_##n##_ports_per_thread[get_thread_idx_by_port(e_port)]--; \
- } \
- break;
- foreach_nat_protocol
-#undef _
- default : nat_elog_info (sm, "unknown protocol");
- return VNET_API_ERROR_INVALID_VALUE_2;
- }
- break;
- }
+ local = pool_elt_at_index (m->locals, local - m->locals);
+ fib_index = local->fib_index;
+ pool_put (m->locals, local);
+ found = 1;
}
}
- if (sm->num_workers > 1)
- tsm = vec_elt_at_index (sm->per_thread_data, m->workers[0]);
- else
- tsm = vec_elt_at_index (sm->per_thread_data, sm->num_workers);
-
- init_nat_k (&kv, m->local_addr, m->local_port, fib_index, m->proto);
- if (!out2in_only)
- clib_bihash_add_del_8_8 (&sm->static_mapping_by_local, &kv, 0);
-
- /* Delete session(s) for static mapping if exist */
- if (!(sm->static_mapping_only) ||
- (sm->static_mapping_only && sm->static_mapping_connection_tracking))
+ if (!found)
{
- nat_ed_static_mapping_del_sessions (
- sm, tsm, m->local_addr, m->local_port, m->proto, fib_index,
- addr_only, e_addr, e_port);
+ return VNET_API_ERROR_NO_SUCH_ENTRY;
}
+ }
+ else
+ {
+ fib_index = m->fib_index;
+ }
- fib_table_unlock (fib_index, FIB_PROTOCOL_IP4, sm->fib_src_low);
- if (pool_elts (m->locals))
- return 0;
-
- init_nat_k (&kv, m->external_addr, m->external_port, 0, m->proto);
- clib_bihash_add_del_8_8 (&sm->static_mapping_by_external, &kv, 0);
+ if (!is_sm_out2in_only (flags))
+ {
+ nat44_ed_sm_i2o_del (sm, l_addr, l_port, fib_index, proto);
+ }
- vec_free (m->tag);
- vec_free (m->workers);
- /* Delete static mapping from pool */
- pool_put (sm->static_mappings, m);
+ // delete sessions for static mapping
+ if (sm->num_workers > 1)
+ {
+ tsm = vec_elt_at_index (sm->per_thread_data, m->workers[0]);
+ }
+ else
+ {
+ tsm = vec_elt_at_index (sm->per_thread_data, sm->num_workers);
}
- if (!addr_only || (l_addr.as_u32 == e_addr.as_u32))
- return 0;
+ nat_ed_static_mapping_del_sessions (sm, tsm, m->local_addr, m->local_port,
+ m->proto, fib_index,
+ is_sm_addr_only (flags), e_addr, e_port);
- /* Add/delete external address to FIB */
- pool_foreach (interface, sm->interfaces)
- {
- if (nat_interface_is_inside (interface))
- continue;
+ fib_table_unlock (fib_index, FIB_PROTOCOL_IP4, sm->fib_src_low);
- snat_add_del_addr_to_fib (&e_addr, 32, interface->sw_if_index, is_add);
- break;
- }
- pool_foreach (interface, sm->output_feature_interfaces)
- {
- if (nat_interface_is_inside (interface))
- continue;
+ if (!pool_elts (m->locals))
+ {
+ // this is last record remove all required stuff
+ // fib_index 0
+ nat44_ed_sm_o2i_del (sm, e_addr, e_port, 0, proto);
- snat_add_del_addr_to_fib (&e_addr, 32, interface->sw_if_index, is_add);
- break;
- }
+ vec_free (m->tag);
+ vec_free (m->workers);
+ pool_put (sm->static_mappings, m);
+
+ nat44_ed_add_del_interface_fib_reg_entries (e_addr, 0);
+ }
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)
+nat44_ed_add_lb_static_mapping (ip4_address_t e_addr, u16 e_port,
+ ip_protocol_t proto,
+ nat44_lb_addr_port_t *locals, u32 flags,
+ 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;
- snat_session_t *s;
uword *bitmap = 0;
+ int rc = 0;
- init_nat_k (&kv, e_addr, e_port, 0, proto);
- if (clib_bihash_search_8_8 (&sm->static_mapping_by_external, &kv, &value))
- m = 0;
- else
- m = pool_elt_at_index (sm->static_mappings, value.value);
+ int i;
- if (is_add)
+ if (!sm->enabled)
{
- if (m)
- return VNET_API_ERROR_VALUE_EXIST;
+ return VNET_API_ERROR_UNSUPPORTED;
+ }
+
+ m = nat44_ed_sm_o2i_lookup (sm, e_addr, e_port, 0, proto);
- if (vec_len (locals) < 2)
- return VNET_API_ERROR_INVALID_VALUE;
+ if (m)
+ {
+ return VNET_API_ERROR_VALUE_EXIST;
+ }
+
+ if (vec_len (locals) < 2)
+ {
+ return VNET_API_ERROR_INVALID_VALUE;
+ }
+ if (!is_sm_out2in_only (flags))
+ {
/* Find external address in allocated addresses and reserve port for
- address and port pair mapping when dynamic translations enabled */
- if (!(sm->static_mapping_only || out2in_only))
+ address and port pair mapping when dynamic translations enabled */
+ for (i = 0; i < vec_len (sm->addresses); i++)
{
- for (i = 0; i < vec_len (sm->addresses); i++)
+ if (sm->addresses[i].addr.as_u32 == e_addr.as_u32)
{
- if (sm->addresses[i].addr.as_u32 == e_addr.as_u32)
+ /* External port must be unused */
+ a = sm->addresses + i;
+ if (nat44_ed_sm_o2i_lookup (sm, a->addr, e_port, 0, proto))
{
- a = sm->addresses + i;
- /* External port must be unused */
- switch (proto)
- {
-#define _(N, j, n, s) \
- case NAT_PROTOCOL_##N: \
- if (a->busy_##n##_port_refcounts[e_port]) \
- return VNET_API_ERROR_INVALID_VALUE; \
- ++a->busy_##n##_port_refcounts[e_port]; \
- if (e_port > 1024) \
- { \
- a->busy_##n##_ports++; \
- a->busy_##n##_ports_per_thread[get_thread_idx_by_port(e_port)]++; \
- } \
- break;
- foreach_nat_protocol
-#undef _
- default : nat_elog_info (sm, "unknown protocol");
- return VNET_API_ERROR_INVALID_VALUE_2;
- }
- break;
+ return VNET_API_ERROR_VALUE_EXIST;
}
+ break;
}
- /* External address must be allocated */
- if (!a)
- return VNET_API_ERROR_NO_SUCH_ENTRY;
}
-
- pool_get (sm->static_mappings, m);
- clib_memset (m, 0, sizeof (*m));
- m->tag = vec_dup (tag);
- m->external_addr = e_addr;
- m->external_port = e_port;
- m->proto = proto;
- m->twice_nat = twice_nat;
- m->flags |= NAT_STATIC_MAPPING_FLAG_LB;
- if (out2in_only)
- m->flags |= NAT_STATIC_MAPPING_FLAG_OUT2IN_ONLY;
- m->affinity = affinity;
-
- if (affinity)
- m->affinity_per_service_list_head_index =
- nat_affinity_get_per_service_list_head_index ();
- else
- m->affinity_per_service_list_head_index = ~0;
-
- init_nat_kv (&kv, m->external_addr, m->external_port, 0, m->proto, 0,
- m - sm->static_mappings);
- if (clib_bihash_add_del_8_8 (&sm->static_mapping_by_external, &kv, 1))
+ // external address must be allocated
+ if (!a)
{
- nat_elog_err (sm, "static_mapping_by_external key add failed");
- return VNET_API_ERROR_UNSPECIFIED;
+ return VNET_API_ERROR_NO_SUCH_ENTRY;
}
+ }
+
+ pool_get (sm->static_mappings, m);
+ clib_memset (m, 0, sizeof (*m));
+ m->tag = vec_dup (tag);
+ m->external_addr = e_addr;
+ m->external_port = e_port;
+ m->affinity = affinity;
+ m->proto = proto;
+
+ m->flags = flags;
+ m->flags |= NAT_SM_FLAG_LB;
+
+ if (affinity)
+ m->affinity_per_service_list_head_index =
+ nat_affinity_get_per_service_list_head_index ();
+ else
+ m->affinity_per_service_list_head_index = ~0;
+
+ if (nat44_ed_sm_o2i_add (sm, m, m->external_addr, m->external_port, 0,
+ m->proto))
+ {
+ nat_log_err ("sm o2i key add failed");
+ return VNET_API_ERROR_UNSPECIFIED;
+ }
- for (i = 0; i < vec_len (locals); i++)
+ for (i = 0; i < vec_len (locals); i++)
+ {
+ locals[i].fib_index = fib_table_find_or_create_and_lock (
+ FIB_PROTOCOL_IP4, locals[i].vrf_id, sm->fib_src_low);
+ if (!is_sm_out2in_only (flags))
{
- locals[i].fib_index =
- fib_table_find_or_create_and_lock (FIB_PROTOCOL_IP4,
- locals[i].vrf_id,
- sm->fib_src_low);
- if (!out2in_only)
- {
- init_nat_kv (&kv, locals[i].addr, locals[i].port,
- locals[i].fib_index, m->proto, 0,
- m - sm->static_mappings);
- clib_bihash_add_del_8_8 (&sm->static_mapping_by_local, &kv, 1);
- }
- locals[i].prefix = (i == 0) ? locals[i].probability :
- (locals[i - 1].prefix + locals[i].probability);
- pool_get (m->locals, local);
- *local = locals[i];
- if (sm->num_workers > 1)
+ if (nat44_ed_sm_o2i_add (sm, m, e_addr, e_port, 0, proto))
{
- ip4_header_t ip = {
- .src_address = locals[i].addr,
- };
- bitmap = clib_bitmap_set (
- bitmap,
- nat44_ed_get_in2out_worker_index (0, &ip, m->fib_index, 0), 1);
+ nat_log_err ("sm o2i key add failed");
+ rc = VNET_API_ERROR_UNSPECIFIED;
+ // here we continue with add operation so that it can be safely
+ // reversed in delete path - otherwise we'd have to track what
+ // we've done and deal with partial cleanups and since bihash
+ // adds are (extremely improbable) the only points of failure,
+ // it's easier to just do it this way
}
}
-
- /* Assign workers */
+ locals[i].prefix = (i == 0) ?
+ locals[i].probability :
+ (locals[i - 1].prefix + locals[i].probability);
+ pool_get (m->locals, local);
+ *local = locals[i];
if (sm->num_workers > 1)
{
- clib_bitmap_foreach (i, bitmap)
- {
- vec_add1(m->workers, i);
- }
+ ip4_header_t ip = {
+ .src_address = locals[i].addr,
+ };
+ bitmap = clib_bitmap_set (
+ bitmap, nat44_ed_get_in2out_worker_index (0, &ip, m->fib_index, 0),
+ 1);
}
}
- else
+
+ /* Assign workers */
+ if (sm->num_workers > 1)
{
- if (!m)
- return VNET_API_ERROR_NO_SUCH_ENTRY;
+ clib_bitmap_foreach (i, bitmap)
+ {
+ vec_add1 (m->workers, i);
+ }
+ }
+
+ return rc;
+}
+
+int
+nat44_ed_del_lb_static_mapping (ip4_address_t e_addr, u16 e_port,
+ ip_protocol_t proto, u32 flags)
+{
+ snat_main_t *sm = &snat_main;
+ snat_static_mapping_t *m;
+
+ nat44_lb_addr_port_t *local;
+ snat_main_per_thread_data_t *tsm;
+ snat_session_t *s;
+
+ if (!sm->enabled)
+ {
+ return VNET_API_ERROR_UNSUPPORTED;
+ }
+
+ m = nat44_ed_sm_o2i_lookup (sm, e_addr, e_port, 0, proto);
+ if (!m)
+ return VNET_API_ERROR_NO_SUCH_ENTRY;
- if (!is_lb_static_mapping (m))
- return VNET_API_ERROR_INVALID_VALUE;
+ if (!is_sm_lb (m->flags))
+ return VNET_API_ERROR_INVALID_VALUE;
+
+ if (nat44_ed_sm_o2i_del (sm, m->external_addr, m->external_port, 0,
+ m->proto))
+ {
+ nat_log_err ("sm o2i key del failed");
+ return VNET_API_ERROR_UNSPECIFIED;
+ }
- /* Free external address port */
- if (!(sm->static_mapping_only || out2in_only))
+ pool_foreach (local, m->locals)
+ {
+ fib_table_unlock (local->fib_index, FIB_PROTOCOL_IP4, sm->fib_src_low);
+ if (!is_sm_out2in_only (flags))
{
- for (i = 0; i < vec_len (sm->addresses); i++)
+ if (nat44_ed_sm_i2o_del (sm, local->addr, local->port,
+ local->fib_index, m->proto))
{
- if (sm->addresses[i].addr.as_u32 == e_addr.as_u32)
- {
- a = sm->addresses + i;
- switch (proto)
- {
-#define _(N, j, n, s) \
- case NAT_PROTOCOL_##N: \
- --a->busy_##n##_port_refcounts[e_port]; \
- if (e_port > 1024) \
- { \
- a->busy_##n##_ports--; \
- a->busy_##n##_ports_per_thread[get_thread_idx_by_port(e_port)]--; \
- } \
- break;
- foreach_nat_protocol
-#undef _
- default : nat_elog_info (sm, "unknown protocol");
- return VNET_API_ERROR_INVALID_VALUE_2;
- }
- break;
- }
+ nat_log_err ("sm i2o key del failed");
+ return VNET_API_ERROR_UNSPECIFIED;
}
}
- init_nat_k (&kv, m->external_addr, m->external_port, 0, m->proto);
- if (clib_bihash_add_del_8_8 (&sm->static_mapping_by_external, &kv, 0))
+ if (sm->num_workers > 1)
{
- nat_elog_err (sm, "static_mapping_by_external key del failed");
- return VNET_API_ERROR_UNSPECIFIED;
+ ip4_header_t ip = {
+ .src_address = local->addr,
+ };
+ tsm = vec_elt_at_index (
+ sm->per_thread_data,
+ nat44_ed_get_in2out_worker_index (0, &ip, m->fib_index, 0));
}
+ else
+ tsm = vec_elt_at_index (sm->per_thread_data, sm->num_workers);
- pool_foreach (local, m->locals)
- {
- fib_table_unlock (local->fib_index, FIB_PROTOCOL_IP4,
- sm->fib_src_low);
- if (!out2in_only)
- {
- init_nat_k (&kv, local->addr, local->port, local->fib_index,
- m->proto);
- if (clib_bihash_add_del_8_8 (&sm->static_mapping_by_local, &kv,
- 0))
- {
- nat_elog_err (sm, "static_mapping_by_local key del failed");
- return VNET_API_ERROR_UNSPECIFIED;
- }
- }
-
- if (sm->num_workers > 1)
- {
- ip4_header_t ip = {
- .src_address = local->addr,
- };
- tsm = vec_elt_at_index (
- sm->per_thread_data,
- nat44_ed_get_in2out_worker_index (0, &ip, m->fib_index, 0));
- }
- else
- tsm = vec_elt_at_index (sm->per_thread_data, sm->num_workers);
-
- /* Delete sessions */
- pool_foreach (s, tsm->sessions)
- {
- if (!(is_lb_session (s)))
- continue;
+ /* Delete sessions */
+ pool_foreach (s, tsm->sessions)
+ {
+ if (!(nat44_ed_is_lb_session (s)))
+ continue;
- if ((s->in2out.addr.as_u32 != local->addr.as_u32) ||
- s->in2out.port != local->port)
- continue;
+ if ((s->in2out.addr.as_u32 != local->addr.as_u32) ||
+ s->in2out.port != local->port)
+ 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);
- }
- }
- if (m->affinity)
- nat_affinity_flush_service (m->affinity_per_service_list_head_index);
- pool_free (m->locals);
- vec_free (m->tag);
- vec_free (m->workers);
+ nat44_ed_free_session_data (sm, s, tsm - sm->per_thread_data, 0);
+ nat_ed_session_delete (sm, s, tsm - sm->per_thread_data, 1);
+ }
+ }
- pool_put (sm->static_mappings, m);
+ if (m->affinity)
+ {
+ nat_affinity_flush_service (m->affinity_per_service_list_head_index);
}
+ pool_free (m->locals);
+ vec_free (m->tag);
+ vec_free (m->workers);
+ pool_put (sm->static_mappings, m);
+
return 0;
}
int
-nat44_lb_static_mapping_add_del_local (ip4_address_t e_addr, u16 e_port,
- ip4_address_t l_addr, u16 l_port,
- nat_protocol_t proto, u32 vrf_id,
- u8 probability, u8 is_add)
+nat44_ed_add_del_lb_static_mapping_local (ip4_address_t e_addr, u16 e_port,
+ ip4_address_t l_addr, u16 l_port,
+ ip_protocol_t proto, u32 vrf_id,
+ u8 probability, u8 is_add)
{
snat_main_t *sm = &snat_main;
snat_static_mapping_t *m = 0;
- clib_bihash_kv_8_8_t kv, value;
nat44_lb_addr_port_t *local, *prev_local, *match_local = 0;
snat_main_per_thread_data_t *tsm;
snat_session_t *s;
uword *bitmap = 0;
int i;
- init_nat_k (&kv, e_addr, e_port, 0, proto);
- if (!clib_bihash_search_8_8 (&sm->static_mapping_by_external, &kv, &value))
- m = pool_elt_at_index (sm->static_mappings, value.value);
+ if (!sm->enabled)
+ {
+ return VNET_API_ERROR_UNSUPPORTED;
+ }
+
+ m = nat44_ed_sm_o2i_lookup (sm, e_addr, e_port, 0, proto);
if (!m)
- return VNET_API_ERROR_NO_SUCH_ENTRY;
+ {
+ return VNET_API_ERROR_NO_SUCH_ENTRY;
+ }
- if (!is_lb_static_mapping (m))
- return VNET_API_ERROR_INVALID_VALUE;
+ if (!is_sm_lb (m->flags))
+ {
+ return VNET_API_ERROR_INVALID_VALUE;
+ }
pool_foreach (local, m->locals)
{
if (is_add)
{
if (match_local)
- return VNET_API_ERROR_VALUE_EXIST;
+ {
+ return VNET_API_ERROR_VALUE_EXIST;
+ }
pool_get (m->locals, local);
clib_memset (local, 0, sizeof (*local));
fib_table_find_or_create_and_lock (FIB_PROTOCOL_IP4, vrf_id,
sm->fib_src_low);
- if (!is_out2in_only_static_mapping (m))
+ if (!is_sm_out2in_only (m->flags))
{
- init_nat_kv (&kv, l_addr, l_port, local->fib_index, proto, 0,
- m - sm->static_mappings);
- if (clib_bihash_add_del_8_8 (&sm->static_mapping_by_local, &kv, 1))
- nat_elog_err (sm, "static_mapping_by_local key add failed");
+ if (nat44_ed_sm_i2o_add (sm, m, l_addr, l_port, local->fib_index,
+ proto))
+ {
+ nat_log_err ("sm i2o key add failed");
+ pool_put (m->locals, local);
+ return VNET_API_ERROR_UNSPECIFIED;
+ }
}
}
else
fib_table_unlock (match_local->fib_index, FIB_PROTOCOL_IP4,
sm->fib_src_low);
- if (!is_out2in_only_static_mapping (m))
+ if (!is_sm_out2in_only (m->flags))
{
- init_nat_k (&kv, l_addr, l_port, match_local->fib_index, proto);
- if (clib_bihash_add_del_8_8 (&sm->static_mapping_by_local, &kv, 0))
- nat_elog_err (sm, "static_mapping_by_local key del failed");
+ if (nat44_ed_sm_i2o_del (sm, l_addr, l_port, match_local->fib_index,
+ proto))
+ nat_log_err ("sm i2o key del failed");
}
if (sm->num_workers > 1)
else
tsm = vec_elt_at_index (sm->per_thread_data, sm->num_workers);
- /* Delete sessions */
- pool_foreach (s, tsm->sessions) {
- if (!(is_lb_session (s)))
- continue;
-
- if ((s->in2out.addr.as_u32 != match_local->addr.as_u32) ||
- s->in2out.port != match_local->port)
- 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);
- }
-
- pool_put (m->locals, match_local);
- }
-
- vec_free (m->workers);
-
- pool_foreach (local, m->locals)
- {
- vec_add1 (locals, local - m->locals);
- if (sm->num_workers > 1)
- {
- ip4_header_t ip;
- ip.src_address.as_u32 = local->addr.as_u32,
- bitmap = clib_bitmap_set (
- bitmap,
- nat44_ed_get_in2out_worker_index (0, &ip, local->fib_index, 0), 1);
- }
- }
-
- ASSERT (vec_len (locals) > 1);
-
- local = pool_elt_at_index (m->locals, locals[0]);
- local->prefix = local->probability;
- for (i = 1; i < vec_len (locals); i++)
- {
- local = pool_elt_at_index (m->locals, locals[i]);
- prev_local = pool_elt_at_index (m->locals, locals[i - 1]);
- local->prefix = local->probability + prev_local->prefix;
- }
-
- /* Assign workers */
- if (sm->num_workers > 1)
- {
- clib_bitmap_foreach (i, bitmap) { vec_add1(m->workers, i); }
- }
-
- return 0;
-}
-
-int
-snat_del_address (snat_main_t * sm, ip4_address_t addr, u8 delete_sm,
- u8 twice_nat)
-{
- snat_address_t *a = 0;
- snat_session_t *ses;
- u32 *ses_to_be_removed = 0, *ses_index;
- snat_main_per_thread_data_t *tsm;
- snat_static_mapping_t *m;
- snat_interface_t *interface;
- int i;
- snat_address_t *addresses =
- twice_nat ? sm->twice_nat_addresses : sm->addresses;
-
- /* Find SNAT address */
- for (i = 0; i < vec_len (addresses); i++)
- {
- if (addresses[i].addr.as_u32 == addr.as_u32)
- {
- a = addresses + i;
- break;
- }
- }
- if (!a)
- {
- nat_log_err ("no such address");
- return VNET_API_ERROR_NO_SUCH_ENTRY;
- }
-
- if (delete_sm)
- {
- ip4_address_t pool_addr = { 0 };
- 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 /* is_add */,
- m->twice_nat,
- is_out2in_only_static_mapping(m),
- m->tag,
- is_identity_static_mapping(m),
- pool_addr, 0);
- }
- }
- else
- {
- /* Check if address is used in some static mapping */
- if (is_snat_address_used_in_static_mapping (sm, addr))
- {
- 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, sm->fib_src_low);
-
- /* Delete sessions using address */
- if (a->busy_tcp_ports || a->busy_udp_ports || a->busy_icmp_ports)
- {
- 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);
- }
- }
+ /* Delete sessions */
+ pool_foreach (s, tsm->sessions) {
+ if (!(nat44_ed_is_lb_session (s)))
+ continue;
- 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);
- }
+ if ((s->in2out.addr.as_u32 != match_local->addr.as_u32) ||
+ s->in2out.port != match_local->port)
+ continue;
- vec_free (ses_to_be_removed);
+ nat44_ed_free_session_data (sm, s, tsm - sm->per_thread_data, 0);
+ nat_ed_session_delete (sm, s, tsm - sm->per_thread_data, 1);
}
+
+ pool_put (m->locals, match_local);
}
-#define _(N, i, n, s) \
- vec_free (a->busy_##n##_ports_per_thread);
- foreach_nat_protocol
-#undef _
+ vec_free (m->workers);
- if (twice_nat)
- {
- vec_del1 (sm->twice_nat_addresses, i);
- return 0;
+ pool_foreach (local, m->locals)
+ {
+ vec_add1 (locals, local - m->locals);
+ if (sm->num_workers > 1)
+ {
+ ip4_header_t ip;
+ ip.src_address.as_u32 = local->addr.as_u32,
+ bitmap = clib_bitmap_set (
+ bitmap,
+ nat44_ed_get_in2out_worker_index (0, &ip, local->fib_index, 0), 1);
+ }
}
- else vec_del1 (sm->addresses, i);
- /* Delete external address from FIB */
- pool_foreach (interface, sm->interfaces)
- {
- if (nat_interface_is_inside (interface))
- continue;
+ ASSERT (vec_len (locals) > 1);
- snat_add_del_addr_to_fib (&addr, 32, interface->sw_if_index, 0);
- break;
+ local = pool_elt_at_index (m->locals, locals[0]);
+ local->prefix = local->probability;
+ for (i = 1; i < vec_len (locals); i++)
+ {
+ local = pool_elt_at_index (m->locals, locals[i]);
+ prev_local = pool_elt_at_index (m->locals, locals[i - 1]);
+ local->prefix = local->probability + prev_local->prefix;
}
- pool_foreach (interface, sm->output_feature_interfaces)
- {
- if (nat_interface_is_inside (interface))
- continue;
- snat_add_del_addr_to_fib (&addr, 32, interface->sw_if_index, 0);
- break;
- }
+ /* Assign workers */
+ if (sm->num_workers > 1)
+ {
+ clib_bitmap_foreach (i, bitmap) { vec_add1(m->workers, i); }
+ }
return 0;
}
}
}
+static_always_inline nat_outside_fib_t *
+nat44_ed_get_outside_fib (nat_outside_fib_t *outside_fibs, u32 fib_index)
+{
+ nat_outside_fib_t *f;
+ vec_foreach (f, outside_fibs)
+ {
+ if (f->fib_index == fib_index)
+ {
+ return f;
+ }
+ }
+ return 0;
+}
+
+static_always_inline snat_interface_t *
+nat44_ed_get_interface (snat_interface_t *interfaces, u32 sw_if_index)
+{
+ snat_interface_t *i;
+ pool_foreach (i, interfaces)
+ {
+ if (i->sw_if_index == sw_if_index)
+ {
+ return i;
+ }
+ }
+ return 0;
+}
+
int
-snat_interface_add_del (u32 sw_if_index, u8 is_inside, int is_del)
+nat44_ed_add_interface (u32 sw_if_index, u8 is_inside)
{
+ const char *del_feature_name, *feature_name;
snat_main_t *sm = &snat_main;
- snat_interface_t *i;
- const char *feature_name, *del_feature_name;
- snat_address_t *ap;
- snat_static_mapping_t *m;
+
nat_outside_fib_t *outside_fib;
- u32 fib_index = fib_table_get_index_for_sw_if_index (FIB_PROTOCOL_IP4,
- sw_if_index);
+ snat_interface_t *i;
+ u32 fib_index;
+ int rv;
if (!sm->enabled)
{
return VNET_API_ERROR_UNSUPPORTED;
}
- pool_foreach (i, sm->output_feature_interfaces)
- {
- if (i->sw_if_index == sw_if_index)
- {
- nat_log_err ("error interface already configured");
- return VNET_API_ERROR_VALUE_EXIST;
- }
- }
+ if (nat44_ed_get_interface (sm->output_feature_interfaces, sw_if_index))
+ {
+ nat_log_err ("error interface already configured");
+ return VNET_API_ERROR_VALUE_EXIST;
+ }
- if (sm->static_mapping_only && !(sm->static_mapping_connection_tracking))
- feature_name = is_inside ? "nat44-in2out-fast" : "nat44-out2in-fast";
- else
+ i = nat44_ed_get_interface (sm->interfaces, sw_if_index);
+ if (i)
{
+ if ((nat44_ed_is_interface_inside (i) && is_inside) ||
+ (nat44_ed_is_interface_outside (i) && !is_inside))
+ {
+ return 0;
+ }
if (sm->num_workers > 1)
- feature_name =
- is_inside ? "nat44-in2out-worker-handoff" :
- "nat44-out2in-worker-handoff";
+ {
+ del_feature_name = !is_inside ? "nat44-in2out-worker-handoff" :
+ "nat44-out2in-worker-handoff";
+ feature_name = "nat44-handoff-classify";
+ }
else
- feature_name = is_inside ? "nat-pre-in2out" : "nat-pre-out2in";
+ {
+ del_feature_name = !is_inside ? "nat-pre-in2out" : "nat-pre-out2in";
+
+ feature_name = "nat44-ed-classify";
+ }
+
+ rv = ip4_sv_reass_enable_disable_with_refcnt (sw_if_index, 1);
+ if (rv)
+ return rv;
+ vnet_feature_enable_disable ("ip4-unicast", del_feature_name,
+ sw_if_index, 0, 0, 0);
+ vnet_feature_enable_disable ("ip4-unicast", feature_name, sw_if_index, 1,
+ 0, 0);
}
+ else
+ {
+ if (sm->num_workers > 1)
+ {
+ feature_name = is_inside ? "nat44-in2out-worker-handoff" :
+ "nat44-out2in-worker-handoff";
+ }
+ else
+ {
+ feature_name = is_inside ? "nat-pre-in2out" : "nat-pre-out2in";
+ }
- ASSERT (sm->frame_queue_nelts > 0);
+ nat_validate_interface_counters (sm, sw_if_index);
+ rv = ip4_sv_reass_enable_disable_with_refcnt (sw_if_index, 1);
+ if (rv)
+ return rv;
+ vnet_feature_enable_disable ("ip4-unicast", feature_name, sw_if_index, 1,
+ 0, 0);
- if (sm->fq_in2out_index == ~0 && sm->num_workers > 1)
- sm->fq_in2out_index = vlib_frame_queue_main_init (sm->in2out_node_index,
- sm->frame_queue_nelts);
+ pool_get (sm->interfaces, i);
+ i->sw_if_index = sw_if_index;
+ i->flags = 0;
+ }
- if (sm->fq_out2in_index == ~0 && sm->num_workers > 1)
- sm->fq_out2in_index = vlib_frame_queue_main_init (sm->out2in_node_index,
- sm->frame_queue_nelts);
+ fib_index =
+ fib_table_get_index_for_sw_if_index (FIB_PROTOCOL_IP4, sw_if_index);
- update_per_vrf_sessions_vec (fib_index, is_del);
+ update_per_vrf_sessions_vec (fib_index, 0 /*is_del*/);
if (!is_inside)
{
- vec_foreach (outside_fib, sm->outside_fibs)
- {
- if (outside_fib->fib_index == fib_index)
- {
- if (is_del)
- {
- outside_fib->refcount--;
- if (!outside_fib->refcount)
- vec_del1 (sm->outside_fibs, outside_fib - sm->outside_fibs);
- }
- else
- outside_fib->refcount++;
- goto feature_set;
- }
- }
- if (!is_del)
+ i->flags |= NAT_INTERFACE_FLAG_IS_OUTSIDE;
+
+ outside_fib = nat44_ed_get_outside_fib (sm->outside_fibs, fib_index);
+ if (outside_fib)
+ {
+ outside_fib->refcount++;
+ }
+ else
{
vec_add2 (sm->outside_fibs, outside_fib, 1);
- outside_fib->refcount = 1;
outside_fib->fib_index = fib_index;
+ outside_fib->refcount = 1;
}
- }
-feature_set:
- pool_foreach (i, sm->interfaces)
- {
- if (i->sw_if_index == sw_if_index)
- {
- if (is_del)
- {
- if (nat_interface_is_inside(i) && nat_interface_is_outside(i))
- {
- if (is_inside)
- i->flags &= ~NAT_INTERFACE_FLAG_IS_INSIDE;
- else
- i->flags &= ~NAT_INTERFACE_FLAG_IS_OUTSIDE;
-
- if (sm->num_workers > 1)
- {
- del_feature_name = "nat44-handoff-classify";
- feature_name = !is_inside ? "nat44-in2out-worker-handoff" :
- "nat44-out2in-worker-handoff";
- }
- else
- {
- del_feature_name = "nat44-ed-classify";
- feature_name =
- !is_inside ? "nat-pre-in2out" : "nat-pre-out2in";
- }
+ nat44_ed_add_del_nat_addr_fib_reg_entries (sw_if_index, 1);
+ nat44_ed_add_del_sm_fib_reg_entries (sw_if_index, 1);
- int rv = ip4_sv_reass_enable_disable_with_refcnt (sw_if_index, 0);
- if (rv)
- return rv;
- vnet_feature_enable_disable ("ip4-unicast", del_feature_name,
- sw_if_index, 0, 0, 0);
- vnet_feature_enable_disable ("ip4-unicast", feature_name,
- sw_if_index, 1, 0, 0);
- }
- else
- {
- int rv = ip4_sv_reass_enable_disable_with_refcnt (sw_if_index, 0);
- if (rv)
- return rv;
- vnet_feature_enable_disable ("ip4-unicast", feature_name,
- sw_if_index, 0, 0, 0);
- pool_put (sm->interfaces, i);
- }
- }
- else
- {
- if ((nat_interface_is_inside (i) && is_inside) ||
- (nat_interface_is_outside (i) && !is_inside))
- return 0;
+ nat44_ed_bind_if_addr_to_nat_addr (sw_if_index);
+ }
+ else
+ {
+ i->flags |= NAT_INTERFACE_FLAG_IS_INSIDE;
+ }
- if (sm->num_workers > 1)
- {
- del_feature_name = !is_inside ? "nat44-in2out-worker-handoff" :
- "nat44-out2in-worker-handoff";
- feature_name = "nat44-handoff-classify";
- }
- else
- {
- del_feature_name =
- !is_inside ? "nat-pre-in2out" : "nat-pre-out2in";
+ return 0;
+}
- feature_name = "nat44-ed-classify";
- }
+int
+nat44_ed_del_interface (u32 sw_if_index, u8 is_inside)
+{
+ const char *del_feature_name, *feature_name;
+ snat_main_t *sm = &snat_main;
- int rv = ip4_sv_reass_enable_disable_with_refcnt (sw_if_index, 1);
- if (rv)
- return rv;
- vnet_feature_enable_disable ("ip4-unicast", del_feature_name,
- sw_if_index, 0, 0, 0);
- vnet_feature_enable_disable ("ip4-unicast", feature_name,
- sw_if_index, 1, 0, 0);
- goto set_flags;
- }
+ nat_outside_fib_t *outside_fib;
+ snat_interface_t *i;
+ u32 fib_index;
+ int rv;
- goto fib;
- }
- }
+ if (!sm->enabled)
+ {
+ nat_log_err ("nat44 is disabled");
+ return VNET_API_ERROR_UNSUPPORTED;
+ }
- if (is_del)
+ i = nat44_ed_get_interface (sm->interfaces, sw_if_index);
+ if (i == 0)
{
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;
- i->flags = 0;
- nat_validate_interface_counters (sm, sw_if_index);
+ if (nat44_ed_is_interface_inside (i) && nat44_ed_is_interface_outside (i))
+ {
+ if (sm->num_workers > 1)
+ {
+ del_feature_name = "nat44-handoff-classify";
+ feature_name = !is_inside ? "nat44-in2out-worker-handoff" :
+ "nat44-out2in-worker-handoff";
+ }
+ else
+ {
+ del_feature_name = "nat44-ed-classify";
+ feature_name = !is_inside ? "nat-pre-in2out" : "nat-pre-out2in";
+ }
+
+ rv = ip4_sv_reass_enable_disable_with_refcnt (sw_if_index, 0);
+ if (rv)
+ {
+ return rv;
+ }
+ vnet_feature_enable_disable ("ip4-unicast", del_feature_name,
+ sw_if_index, 0, 0, 0);
+ vnet_feature_enable_disable ("ip4-unicast", feature_name, sw_if_index, 1,
+ 0, 0);
+
+ if (is_inside)
+ {
+ i->flags &= ~NAT_INTERFACE_FLAG_IS_INSIDE;
+ }
+ else
+ {
+ i->flags &= ~NAT_INTERFACE_FLAG_IS_OUTSIDE;
+ }
+ }
+ else
+ {
+ if (sm->num_workers > 1)
+ {
+ feature_name = is_inside ? "nat44-in2out-worker-handoff" :
+ "nat44-out2in-worker-handoff";
+ }
+ else
+ {
+ feature_name = is_inside ? "nat-pre-in2out" : "nat-pre-out2in";
+ }
+
+ rv = ip4_sv_reass_enable_disable_with_refcnt (sw_if_index, 0);
+ if (rv)
+ {
+ return rv;
+ }
+ vnet_feature_enable_disable ("ip4-unicast", feature_name, sw_if_index, 0,
+ 0, 0);
- vnet_feature_enable_disable ("ip4-unicast", feature_name, sw_if_index, 1, 0,
- 0);
+ // remove interface
+ pool_put (sm->interfaces, i);
+ }
+
+ fib_index =
+ fib_table_get_index_for_sw_if_index (FIB_PROTOCOL_IP4, sw_if_index);
- int rv = ip4_sv_reass_enable_disable_with_refcnt (sw_if_index, 1);
- if (rv)
- return rv;
+ update_per_vrf_sessions_vec (fib_index, 1 /*is_del*/);
-set_flags:
- if (is_inside)
+ if (!is_inside)
{
- i->flags |= NAT_INTERFACE_FLAG_IS_INSIDE;
- return 0;
+ outside_fib = nat44_ed_get_outside_fib (sm->outside_fibs, fib_index);
+ if (outside_fib)
+ {
+ outside_fib->refcount--;
+ if (!outside_fib->refcount)
+ {
+ vec_del1 (sm->outside_fibs, outside_fib - sm->outside_fibs);
+ }
+ }
+
+ nat44_ed_add_del_nat_addr_fib_reg_entries (sw_if_index, 0);
+ nat44_ed_add_del_sm_fib_reg_entries (sw_if_index, 0);
+ }
+
+ return 0;
+}
+
+int
+nat44_ed_add_output_interface (u32 sw_if_index)
+{
+ snat_main_t *sm = &snat_main;
+
+ nat_outside_fib_t *outside_fib;
+ snat_interface_t *i;
+ u32 fib_index;
+ int rv;
+
+ if (!sm->enabled)
+ {
+ nat_log_err ("nat44 is disabled");
+ return VNET_API_ERROR_UNSUPPORTED;
+ }
+
+ if (nat44_ed_get_interface (sm->interfaces, sw_if_index))
+ {
+ nat_log_err ("error interface already configured");
+ return VNET_API_ERROR_VALUE_EXIST;
+ }
+
+ if (nat44_ed_get_interface (sm->output_feature_interfaces, sw_if_index))
+ {
+ nat_log_err ("error interface already configured");
+ return VNET_API_ERROR_VALUE_EXIST;
+ }
+
+ if (sm->num_workers > 1)
+ {
+ rv = ip4_sv_reass_enable_disable_with_refcnt (sw_if_index, 1);
+ if (rv)
+ {
+ return rv;
+ }
+
+ rv = ip4_sv_reass_output_enable_disable_with_refcnt (sw_if_index, 1);
+ if (rv)
+ {
+ return rv;
+ }
+
+ vnet_feature_enable_disable (
+ "ip4-unicast", "nat44-out2in-worker-handoff", sw_if_index, 1, 0, 0);
+ vnet_feature_enable_disable ("ip4-output",
+ "nat44-in2out-output-worker-handoff",
+ sw_if_index, 1, 0, 0);
}
else
- i->flags |= NAT_INTERFACE_FLAG_IS_OUTSIDE;
+ {
+ rv = ip4_sv_reass_enable_disable_with_refcnt (sw_if_index, 1);
+ if (rv)
+ {
+ return rv;
+ }
- /* Add/delete external addresses to FIB */
-fib:
- vec_foreach (ap, sm->addresses)
- snat_add_del_addr_to_fib(&ap->addr, 32, sw_if_index, !is_del);
+ rv = ip4_sv_reass_output_enable_disable_with_refcnt (sw_if_index, 1);
+ if (rv)
+ {
+ return rv;
+ }
- pool_foreach (m, sm->static_mappings)
- {
- if (!(is_addr_only_static_mapping(m)) || (m->local_addr.as_u32 == m->external_addr.as_u32))
- continue;
+ vnet_feature_enable_disable ("ip4-unicast", "nat-pre-out2in",
+ sw_if_index, 1, 0, 0);
+ vnet_feature_enable_disable ("ip4-output", "nat-pre-in2out-output",
+ sw_if_index, 1, 0, 0);
+ }
- snat_add_del_addr_to_fib(&m->external_addr, 32, sw_if_index, !is_del);
- }
+ nat_validate_interface_counters (sm, sw_if_index);
+
+ pool_get (sm->output_feature_interfaces, i);
+ i->sw_if_index = sw_if_index;
+ i->flags = 0;
+ i->flags |= NAT_INTERFACE_FLAG_IS_INSIDE;
+ i->flags |= NAT_INTERFACE_FLAG_IS_OUTSIDE;
+
+ fib_index =
+ fib_table_get_index_for_sw_if_index (FIB_PROTOCOL_IP4, sw_if_index);
+ update_per_vrf_sessions_vec (fib_index, 0 /*is_del*/);
+
+ outside_fib = nat44_ed_get_outside_fib (sm->outside_fibs, fib_index);
+ if (outside_fib)
+ {
+ outside_fib->refcount++;
+ }
+ else
+ {
+ vec_add2 (sm->outside_fibs, outside_fib, 1);
+ outside_fib->fib_index = fib_index;
+ outside_fib->refcount = 1;
+ }
+
+ nat44_ed_add_del_nat_addr_fib_reg_entries (sw_if_index, 1);
+ nat44_ed_add_del_sm_fib_reg_entries (sw_if_index, 1);
+
+ nat44_ed_bind_if_addr_to_nat_addr (sw_if_index);
return 0;
}
int
-snat_interface_add_del_output_feature (u32 sw_if_index,
- u8 is_inside, int is_del)
+nat44_ed_del_output_interface (u32 sw_if_index)
{
snat_main_t *sm = &snat_main;
- snat_interface_t *i;
- snat_address_t *ap;
- snat_static_mapping_t *m;
+
nat_outside_fib_t *outside_fib;
- u32 fib_index = fib_table_get_index_for_sw_if_index (FIB_PROTOCOL_IP4,
- sw_if_index);
+ snat_interface_t *i;
+ u32 fib_index;
+ int rv;
if (!sm->enabled)
{
return VNET_API_ERROR_UNSUPPORTED;
}
- if (sm->static_mapping_only && !(sm->static_mapping_connection_tracking))
+ i = nat44_ed_get_interface (sm->output_feature_interfaces, sw_if_index);
+ if (!i)
{
- nat_log_err ("error unsupported");
- return VNET_API_ERROR_UNSUPPORTED;
+ nat_log_err ("error interface couldn't be found");
+ return VNET_API_ERROR_NO_SUCH_ENTRY;
}
- pool_foreach (i, sm->interfaces)
- {
- if (i->sw_if_index == sw_if_index)
- {
- nat_log_err ("error interface already configured");
- return VNET_API_ERROR_VALUE_EXIST;
- }
- }
-
- update_per_vrf_sessions_vec (fib_index, is_del);
-
- if (!is_inside)
+ if (sm->num_workers > 1)
{
- vec_foreach (outside_fib, sm->outside_fibs)
- {
- if (outside_fib->fib_index == fib_index)
- {
- if (is_del)
- {
- outside_fib->refcount--;
- if (!outside_fib->refcount)
- vec_del1 (sm->outside_fibs, outside_fib - sm->outside_fibs);
- }
- else
- outside_fib->refcount++;
- goto feature_set;
- }
- }
- if (!is_del)
+ rv = ip4_sv_reass_enable_disable_with_refcnt (sw_if_index, 0);
+ if (rv)
{
- vec_add2 (sm->outside_fibs, outside_fib, 1);
- outside_fib->refcount = 1;
- outside_fib->fib_index = fib_index;
+ return rv;
}
- }
-
-feature_set:
- if (is_inside)
- {
- int rv =
- ip4_sv_reass_enable_disable_with_refcnt (sw_if_index, !is_del);
- if (rv)
- return rv;
- rv =
- ip4_sv_reass_output_enable_disable_with_refcnt (sw_if_index,
- !is_del);
- if (rv)
- return rv;
- goto fq;
- }
- if (sm->num_workers > 1)
- {
- int rv = ip4_sv_reass_enable_disable_with_refcnt (sw_if_index, !is_del);
- if (rv)
- return rv;
- rv =
- ip4_sv_reass_output_enable_disable_with_refcnt (sw_if_index, !is_del);
+ rv = ip4_sv_reass_output_enable_disable_with_refcnt (sw_if_index, 0);
if (rv)
- return rv;
- vnet_feature_enable_disable ("ip4-unicast",
- "nat44-out2in-worker-handoff",
- sw_if_index, !is_del, 0, 0);
+ {
+ return rv;
+ }
+
+ vnet_feature_enable_disable (
+ "ip4-unicast", "nat44-out2in-worker-handoff", sw_if_index, 0, 0, 0);
vnet_feature_enable_disable ("ip4-output",
"nat44-in2out-output-worker-handoff",
- sw_if_index, !is_del, 0, 0);
+ sw_if_index, 0, 0, 0);
}
else
{
- int rv =
- ip4_sv_reass_enable_disable_with_refcnt (sw_if_index, !is_del);
- if (rv)
- return rv;
- rv =
- ip4_sv_reass_output_enable_disable_with_refcnt (sw_if_index,
- !is_del);
- if (rv)
- return rv;
- vnet_feature_enable_disable ("ip4-unicast", "nat-pre-out2in",
- sw_if_index, !is_del, 0, 0);
- vnet_feature_enable_disable ("ip4-output", "nat-pre-in2out-output",
- sw_if_index, !is_del, 0, 0);
- }
-
-fq:
- if (sm->fq_in2out_output_index == ~0 && sm->num_workers > 1)
- sm->fq_in2out_output_index =
- vlib_frame_queue_main_init (sm->in2out_output_node_index, 0);
-
- if (sm->fq_out2in_index == ~0 && sm->num_workers > 1)
- sm->fq_out2in_index =
- vlib_frame_queue_main_init (sm->out2in_node_index, 0);
-
- pool_foreach (i, sm->output_feature_interfaces)
- {
- if (i->sw_if_index == sw_if_index)
- {
- if (is_del)
- pool_put (sm->output_feature_interfaces, i);
- else
- return VNET_API_ERROR_VALUE_EXIST;
+ rv = ip4_sv_reass_enable_disable_with_refcnt (sw_if_index, 0);
+ if (rv)
+ {
+ return rv;
+ }
- goto fib;
- }
- }
+ rv = ip4_sv_reass_output_enable_disable_with_refcnt (sw_if_index, 0);
+ if (rv)
+ {
+ return rv;
+ }
- if (is_del)
- {
- nat_log_err ("error interface couldn't be found");
- return VNET_API_ERROR_NO_SUCH_ENTRY;
+ vnet_feature_enable_disable ("ip4-unicast", "nat-pre-out2in",
+ sw_if_index, 0, 0, 0);
+ vnet_feature_enable_disable ("ip4-output", "nat-pre-in2out-output",
+ sw_if_index, 0, 0, 0);
}
- pool_get (sm->output_feature_interfaces, i);
- i->sw_if_index = sw_if_index;
- i->flags = 0;
- nat_validate_interface_counters (sm, sw_if_index);
- if (is_inside)
- i->flags |= NAT_INTERFACE_FLAG_IS_INSIDE;
- else
- i->flags |= NAT_INTERFACE_FLAG_IS_OUTSIDE;
-
- /* Add/delete external addresses to FIB */
-fib:
- if (is_inside)
- return 0;
+ // remove interface
+ pool_put (sm->output_feature_interfaces, i);
- vec_foreach (ap, sm->addresses)
- snat_add_del_addr_to_fib(&ap->addr, 32, sw_if_index, !is_del);
+ fib_index =
+ fib_table_get_index_for_sw_if_index (FIB_PROTOCOL_IP4, sw_if_index);
+ update_per_vrf_sessions_vec (fib_index, 1 /*is_del*/);
- pool_foreach (m, sm->static_mappings)
- {
- if (!((is_addr_only_static_mapping(m))) || (m->local_addr.as_u32 == m->external_addr.as_u32))
- continue;
+ outside_fib = nat44_ed_get_outside_fib (sm->outside_fibs, fib_index);
+ if (outside_fib)
+ {
+ outside_fib->refcount--;
+ if (!outside_fib->refcount)
+ {
+ vec_del1 (sm->outside_fibs, outside_fib - sm->outside_fibs);
+ }
+ }
- snat_add_del_addr_to_fib(&m->external_addr, 32, sw_if_index, !is_del);
- }
+ nat44_ed_add_del_nat_addr_fib_reg_entries (sw_if_index, 0);
+ nat44_ed_add_del_sm_fib_reg_entries (sw_if_index, 0);
return 0;
}
}
static void
-snat_update_outside_fib (ip4_main_t * im, uword opaque,
- u32 sw_if_index, u32 new_fib_index,
- u32 old_fib_index)
+nat44_ed_update_outside_fib_cb (ip4_main_t *im, uword opaque, u32 sw_if_index,
+ u32 new_fib_index, u32 old_fib_index)
{
snat_main_t *sm = &snat_main;
nat_outside_fib_t *outside_fib;
}
pool_foreach (i, sm->interfaces)
- {
+ {
if (i->sw_if_index == sw_if_index)
{
- if (!(nat_interface_is_outside (i)))
+ if (!(nat44_ed_is_interface_outside (i)))
return;
match = 1;
}
}
pool_foreach (i, sm->output_feature_interfaces)
- {
+ {
if (i->sw_if_index == sw_if_index)
{
- if (!(nat_interface_is_outside (i)))
+ if (!(nat44_ed_is_interface_outside (i)))
return;
match = 1;
}
return;
vec_foreach (outside_fib, sm->outside_fibs)
- {
- if (outside_fib->fib_index == old_fib_index)
- {
- outside_fib->refcount--;
- if (!outside_fib->refcount)
- vec_del1 (sm->outside_fibs, outside_fib - sm->outside_fibs);
- break;
- }
- }
+ {
+ if (outside_fib->fib_index == old_fib_index)
+ {
+ outside_fib->refcount--;
+ if (!outside_fib->refcount)
+ vec_del1 (sm->outside_fibs, outside_fib - sm->outside_fibs);
+ break;
+ }
+ }
vec_foreach (outside_fib, sm->outside_fibs)
- {
- if (outside_fib->fib_index == new_fib_index)
- {
- outside_fib->refcount++;
- is_add = 0;
- break;
- }
- }
+ {
+ if (outside_fib->fib_index == new_fib_index)
+ {
+ outside_fib->refcount++;
+ is_add = 0;
+ break;
+ }
+ }
if (is_add)
{
}
}
-static void
-snat_update_outside_fib (ip4_main_t * im, uword opaque,
- u32 sw_if_index, u32 new_fib_index,
- u32 old_fib_index);
+static void nat44_ed_update_outside_fib_cb (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,
- uword opaque,
- u32 sw_if_index,
- ip4_address_t * address,
- u32 address_length,
- u32 if_address_index, u32 is_delete);
+static void nat44_ed_add_del_interface_address_cb (
+ ip4_main_t *im, uword opaque, u32 sw_if_index, ip4_address_t *address,
+ u32 address_length, u32 if_address_index, u32 is_delete);
-static void
-nat_ip4_add_del_addr_only_sm_cb (ip4_main_t * im,
- uword opaque,
- u32 sw_if_index,
- ip4_address_t * address,
- u32 address_length,
- u32 if_address_index, u32 is_delete);
+static void nat44_ed_add_del_static_mapping_cb (
+ ip4_main_t *im, uword opaque, u32 sw_if_index, ip4_address_t *address,
+ u32 address_length, u32 if_address_index, u32 is_delete);
void
test_key_calc_split ()
u32 thread_index = 3000000001;
u32 session_index = 3000000221;
clib_bihash_kv_16_8_t kv;
- init_ed_kv (&kv, l_addr, l_port, r_addr, r_port, fib_index, proto,
- thread_index, session_index);
+ init_ed_kv (&kv, l_addr.as_u32, l_port, r_addr.as_u32, r_port, fib_index,
+ proto, thread_index, session_index);
ip4_address_t l_addr2;
ip4_address_t r_addr2;
clib_memset (&l_addr2, 0, sizeof (l_addr2));
ASSERT (fib_index == fib_index2);
ASSERT (thread_index == ed_value_get_thread_index (&kv));
ASSERT (session_index == ed_value_get_session_index (&kv));
-
- fib_index = 7001;
- proto = 5;
- nat_protocol_t proto3 = ~0;
- u64 key = calc_nat_key (l_addr, l_port, fib_index, proto);
- split_nat_key (key, &l_addr2, &l_port2, &fib_index2, &proto3);
- ASSERT (l_addr.as_u32 == l_addr2.as_u32);
- ASSERT (l_port == l_port2);
- ASSERT (proto == proto3);
- ASSERT (fib_index == fib_index2);
}
static clib_error_t *
nat_ip_table_add_del (vnet_main_t * vnm, u32 table_id, u32 is_add)
{
u32 fib_index;
-
- // TODO: consider removing all NAT interfaces
- if (!is_add)
+ if (!is_add)
+ {
+ fib_index = ip4_fib_index_from_table_id (table_id);
+ if (fib_index != ~0)
{
- fib_index = ip4_fib_index_from_table_id (table_id);
- if (fib_index != ~0)
- expire_per_vrf_sessions (fib_index);
+ expire_per_vrf_sessions (fib_index);
}
+ }
return 0;
}
sm->log_level = NAT_LOG_ERROR;
nat44_set_node_indexes (sm, vm);
+
sm->log_class = vlib_log_register_class ("nat", 0);
nat_ipfix_logging_init (vm);
nat_init_simple_counter (sm->total_sessions, "total-sessions",
"/nat44-ed/total-sessions");
- sm->max_cfg_sessions_gauge = stat_segment_new_entry (
- (u8 *) "/nat44-ed/max-cfg-sessions", STAT_DIR_TYPE_SCALAR_INDEX);
+ sm->max_cfg_sessions_gauge =
+ vlib_stats_add_gauge ("/nat44-ed/max-cfg-sessions");
#define _(x) \
nat_init_simple_counter (sm->counters.fastpath.in2out.x, #x, \
/* 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;
+ {
+ 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;
+ cbi.function = nat44_ed_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;
+ cbi.function = nat44_ed_add_del_static_mapping_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;
+ cbt.function = nat44_ed_update_outside_fib_cb;
vec_add1 (sm->ip4_main->table_bind_callbacks, cbt);
sm->fib_src_low =
fail_if_enabled ();
- // UPDATE based on these appropriate API/CLI
- // 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.static_mapping_only && !c.connection_tracking)
- {
- nat_log_err ("unsupported combination of configuration");
- return 1;
- }
-
- // nat44 feature configuration
- sm->static_mapping_only = c.static_mapping_only;
- sm->static_mapping_connection_tracking = c.connection_tracking;
-
sm->forwarding_enabled = 0;
sm->mss_clamping = 0;
- sm->pat = (!c.static_mapping_only ||
- (c.static_mapping_only && c.connection_tracking));
if (!c.sessions)
c.sessions = 63 * 1024;
sm->max_translations_per_thread = c.sessions;
- stat_segment_set_state_counter (sm->max_cfg_sessions_gauge,
- sm->max_translations_per_thread);
+ vlib_stats_set_gauge (sm->max_cfg_sessions_gauge,
+ sm->max_translations_per_thread);
sm->translation_buckets = nat_calc_bihash_buckets (c.sessions);
- // ED only feature
vec_add1 (sm->max_translations_per_fib, sm->max_translations_per_thread);
sm->inside_vrf_id = c.inside_vrf;
nat44_ed_db_init (sm->max_translations_per_thread, sm->translation_buckets);
+ nat44_ed_init_tcp_state_stable (sm);
+
nat_affinity_enable ();
nat_reset_timeouts (&sm->timeouts);
vlib_zero_simple_counter (&sm->total_sessions, 0);
if (!sm->frame_queue_nelts)
- sm->frame_queue_nelts = NAT_FQ_NELTS_DEFAULT;
+ {
+ sm->frame_queue_nelts = NAT_FQ_NELTS_DEFAULT;
+ }
+
+ if (sm->num_workers > 1)
+ {
+ if (sm->fq_in2out_index == ~0)
+ {
+ sm->fq_in2out_index = vlib_frame_queue_main_init (
+ sm->in2out_node_index, sm->frame_queue_nelts);
+ }
+ if (sm->fq_out2in_index == ~0)
+ {
+ sm->fq_out2in_index = vlib_frame_queue_main_init (
+ sm->out2in_node_index, sm->frame_queue_nelts);
+ }
+ if (sm->fq_in2out_output_index == ~0)
+ {
+ sm->fq_in2out_output_index = vlib_frame_queue_main_init (
+ sm->in2out_output_node_index, sm->frame_queue_nelts);
+ }
+ }
sm->enabled = 1;
sm->rconfig = c;
return 0;
}
-void
-nat44_addresses_free (snat_address_t ** addresses)
+int
+nat44_ed_del_addresses ()
{
- snat_address_t *ap;
- vec_foreach (ap, *addresses)
+ snat_main_t *sm = &snat_main;
+ snat_address_t *a, *vec;
+ int error = 0;
+
+ vec = vec_dup (sm->addresses);
+ vec_foreach (a, vec)
+ {
+ error = nat44_ed_del_address (a->addr, 0);
+ if (error)
+ {
+ nat_log_err ("error occurred while removing adderess");
+ }
+ }
+ vec_free (vec);
+ vec_free (sm->addresses);
+ sm->addresses = 0;
+
+ vec = vec_dup (sm->twice_nat_addresses);
+ vec_foreach (a, vec)
{
- #define _(N, i, n, s) \
- vec_free (ap->busy_##n##_ports_per_thread);
- foreach_nat_protocol
- #undef _
+ error = nat44_ed_del_address (a->addr, 1);
+ if (error)
+ {
+ nat_log_err ("error occurred while removing adderess");
+ }
}
- vec_free (*addresses);
- *addresses = 0;
+ vec_free (vec);
+ vec_free (sm->twice_nat_addresses);
+ sm->twice_nat_addresses = 0;
+
+ vec_free (sm->addr_to_resolve);
+ sm->addr_to_resolve = 0;
+
+ return error;
}
int
-nat44_plugin_disable ()
+nat44_ed_del_interfaces ()
{
snat_main_t *sm = &snat_main;
- snat_interface_t *i, *vec;
+ snat_interface_t *i, *pool;
int error = 0;
- fail_if_disabled ();
-
- // first unregister all nodes from interfaces
- vec = vec_dup (sm->interfaces);
- vec_foreach (i, vec)
+ pool = pool_dup (sm->interfaces);
+ pool_foreach (i, pool)
{
- 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 (nat44_ed_is_interface_inside (i))
+ {
+ error = nat44_ed_del_interface (i->sw_if_index, 1);
+ }
+ if (nat44_ed_is_interface_outside (i))
+ {
+ error = nat44_ed_del_interface (i->sw_if_index, 0);
+ }
if (error)
- {
- nat_log_err ("error occurred while removing interface %u",
- i->sw_if_index);
- }
+ {
+ nat_log_err ("error occurred while removing interface");
+ }
}
- vec_free (vec);
+ pool_free (pool);
+ pool_free (sm->interfaces);
sm->interfaces = 0;
+ return error;
+}
- vec = vec_dup (sm->output_feature_interfaces);
- 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);
+int
+nat44_ed_del_output_interfaces ()
+{
+ snat_main_t *sm = &snat_main;
+ snat_interface_t *i, *pool;
+ int error = 0;
+ pool = pool_dup (sm->output_feature_interfaces);
+ pool_foreach (i, pool)
+ {
+ error = nat44_ed_del_output_interface (i->sw_if_index);
if (error)
- {
- nat_log_err ("error occurred while removing interface %u",
- i->sw_if_index);
- }
+ {
+ nat_log_err ("error occurred while removing output interface");
+ }
}
- vec_free (vec);
+ pool_free (pool);
+ pool_free (sm->output_feature_interfaces);
sm->output_feature_interfaces = 0;
+ return error;
+}
+
+int
+nat44_ed_del_static_mappings ()
+{
+ snat_main_t *sm = &snat_main;
+ snat_static_mapping_t *m, *pool;
+ int error = 0;
+
+ pool = pool_dup (sm->static_mappings);
+ pool_foreach (m, pool)
+ {
+ error = nat44_ed_del_static_mapping_internal (
+ m->local_addr, m->external_addr, m->local_port, m->external_port,
+ m->proto, m->vrf_id, m->flags);
+ if (error)
+ {
+ nat_log_err ("error occurred while removing mapping");
+ }
+ }
+ pool_free (pool);
+ pool_free (sm->static_mappings);
+ sm->static_mappings = 0;
+
+ vec_free (sm->sm_to_resolve);
+ sm->sm_to_resolve = 0;
+
+ return error;
+}
+
+int
+nat44_plugin_disable ()
+{
+ snat_main_per_thread_data_t *tsm;
+ snat_main_t *sm = &snat_main;
+ int rc, error = 0;
+
+ fail_if_disabled ();
+
+ rc = nat44_ed_del_static_mappings ();
+ if (rc)
+ error = 1;
+
+ rc = nat44_ed_del_addresses ();
+ if (rc)
+ error = 1;
+
+ rc = nat44_ed_del_interfaces ();
+ if (rc)
+ error = 1;
+
+ rc = nat44_ed_del_output_interfaces ();
+ if (rc)
+ error = 1;
vec_free (sm->max_translations_per_fib);
+ sm->max_translations_per_fib = 0;
- nat44_ed_db_free ();
+ clib_bihash_free_16_8 (&sm->flow_hash);
- nat44_addresses_free (&sm->addresses);
- nat44_addresses_free (&sm->twice_nat_addresses);
+ vec_foreach (tsm, sm->per_thread_data)
+ {
+ nat44_ed_worker_db_free (tsm);
+ }
- vec_free (sm->to_resolve);
- vec_free (sm->auto_add_sw_if_indices);
- vec_free (sm->auto_add_sw_if_indices_twice_nat);
+ clib_memset (&sm->rconfig, 0, sizeof (sm->rconfig));
- sm->to_resolve = 0;
- sm->auto_add_sw_if_indices = 0;
- sm->auto_add_sw_if_indices_twice_nat = 0;
+ nat_affinity_disable ();
sm->forwarding_enabled = 0;
-
sm->enabled = 0;
- clib_memset (&sm->rconfig, 0, sizeof (sm->rconfig));
- return 0;
+ return error;
}
void
sm->forwarding_enabled = is_enable != 0;
- if (is_enable)
- return;
+ if (!sm->enabled || is_enable)
+ {
+ return;
+ }
vec_foreach (tsm, sm->per_thread_data)
{
pool_foreach (s, tsm->sessions)
{
- if (is_fwd_bypass_session (s))
+ if (na44_ed_is_fwd_bypass_session (s))
{
vec_add1 (ses_to_be_removed, s - tsm->sessions);
}
vec_foreach (ses_index, ses_to_be_removed)
{
s = pool_elt_at_index (tsm->sessions, ses_index[0]);
- nat_free_session_data (sm, s, tsm - sm->per_thread_data, 0);
+ nat44_ed_free_session_data (sm, s, tsm - sm->per_thread_data, 0);
nat_ed_session_delete (sm, s, tsm - sm->per_thread_data, 1);
}
}
}
-void
-snat_free_outside_address_and_port (snat_address_t *addresses,
- u32 thread_index, ip4_address_t *addr,
- u16 port, nat_protocol_t protocol)
+static_always_inline snat_static_mapping_t *
+nat44_ed_sm_match (snat_main_t *sm, ip4_address_t match_addr, u16 match_port,
+ u32 match_fib_index, ip_protocol_t match_protocol,
+ int by_external)
{
- snat_main_t *sm = &snat_main;
- snat_address_t *a;
- u32 address_index;
- u16 port_host_byte_order = clib_net_to_host_u16 (port);
-
- for (address_index = 0; address_index < vec_len (addresses);
- address_index++)
+ snat_static_mapping_t *m;
+ if (!by_external)
{
- if (addresses[address_index].addr.as_u32 == addr->as_u32)
- break;
- }
+ m = nat44_ed_sm_i2o_lookup (sm, match_addr, match_port, match_fib_index,
+ match_protocol);
+ if (m)
+ return m;
- ASSERT (address_index < vec_len (addresses));
+ /* Try address only mapping */
+ m = nat44_ed_sm_i2o_lookup (sm, match_addr, 0, match_fib_index, 0);
+ if (m)
+ return m;
- a = addresses + address_index;
+ if (sm->inside_fib_index != match_fib_index)
+ {
+ m = nat44_ed_sm_i2o_lookup (sm, match_addr, match_port,
+ sm->inside_fib_index, match_protocol);
+ if (m)
+ return m;
- switch (protocol)
- {
-#define _(N, i, n, s) \
- case NAT_PROTOCOL_##N: \
- ASSERT (a->busy_##n##_port_refcounts[port_host_byte_order] >= 1); \
- --a->busy_##n##_port_refcounts[port_host_byte_order]; \
- a->busy_##n##_ports--; \
- a->busy_##n##_ports_per_thread[thread_index]--; \
- break;
- foreach_nat_protocol
-#undef _
- default : nat_elog_info (sm, "unknown protocol");
- return;
- }
-}
+ /* Try address only mapping */
+ m = nat44_ed_sm_i2o_lookup (sm, match_addr, 0, sm->inside_fib_index,
+ 0);
+ if (m)
+ return m;
+ }
+ if (sm->outside_fib_index != match_fib_index)
+ {
+ m = nat44_ed_sm_i2o_lookup (sm, match_addr, match_port,
+ sm->outside_fib_index, match_protocol);
+ if (m)
+ return m;
-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_main_t *sm = &snat_main;
- snat_address_t *a = 0;
- u32 address_index;
- u16 port_host_byte_order = clib_net_to_host_u16 (port);
-
- for (address_index = 0; address_index < vec_len (addresses);
- address_index++)
- {
- if (addresses[address_index].addr.as_u32 != addr.as_u32)
- continue;
-
- a = addresses + address_index;
- switch (protocol)
- {
-#define _(N, j, n, s) \
- case NAT_PROTOCOL_##N: \
- if (a->busy_##n##_port_refcounts[port_host_byte_order]) \
- return VNET_API_ERROR_INSTANCE_IN_USE; \
- ++a->busy_##n##_port_refcounts[port_host_byte_order]; \
- a->busy_##n##_ports_per_thread[thread_index]++; \
- a->busy_##n##_ports++; \
- return 0;
- foreach_nat_protocol
-#undef _
- default : nat_elog_info (sm, "unknown protocol");
- return 1;
+ /* Try address only mapping */
+ m = nat44_ed_sm_i2o_lookup (sm, match_addr, 0, sm->outside_fib_index,
+ 0);
+ if (m)
+ return m;
}
}
+ else
+ {
+ m =
+ nat44_ed_sm_o2i_lookup (sm, match_addr, match_port, 0, match_protocol);
+ if (m)
+ return m;
- return VNET_API_ERROR_NO_SUCH_ENTRY;
+ /* Try address only mapping */
+ m = nat44_ed_sm_o2i_lookup (sm, match_addr, 0, 0, 0);
+ if (m)
+ return m;
+ }
+ return 0;
}
int
snat_static_mapping_match (vlib_main_t *vm, snat_main_t *sm,
ip4_address_t match_addr, u16 match_port,
- u32 match_fib_index, nat_protocol_t match_protocol,
+ u32 match_fib_index, ip_protocol_t match_protocol,
ip4_address_t *mapping_addr, u16 *mapping_port,
- u32 *mapping_fib_index, u8 by_external,
+ u32 *mapping_fib_index, int by_external,
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, 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;
u32 rand, lo = 0, hi, mid, *tmp = 0, i;
nat44_lb_addr_port_t *local;
u8 backend_index;
- if (!by_external)
- {
- 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, match_fib_index, 0);
- if (clib_bihash_search_8_8 (mapping_hash, &kv, &value))
- return 1;
- }
- }
- else
+ m = nat44_ed_sm_match (sm, match_addr, match_port, match_fib_index,
+ match_protocol, by_external);
+ if (!m)
{
- 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, 0, 0);
- if (clib_bihash_search_8_8 (mapping_hash, &kv, &value))
- return 1;
- }
+ return 1;
}
- m = pool_elt_at_index (sm->static_mappings, value.value);
-
if (by_external)
{
- if (is_lb_static_mapping (m))
+ if (is_sm_lb (m->flags))
{
if (PREDICT_FALSE (lb != 0))
*lb = m->affinity ? AFFINITY_LB_NAT : LB_NAT;
*mapping_fib_index = m->fib_index;
*mapping_addr = m->local_addr;
/* Address only mapping doesn't change port */
- *mapping_port = is_addr_only_static_mapping (m) ? match_port
- : m->local_port;
+ *mapping_port =
+ is_sm_addr_only (m->flags) ? match_port : m->local_port;
}
}
else
{
*mapping_addr = m->external_addr;
/* Address only mapping doesn't change port */
- *mapping_port = is_addr_only_static_mapping (m) ? match_port
- : m->external_port;
+ *mapping_port =
+ is_sm_addr_only (m->flags) ? match_port : m->external_port;
*mapping_fib_index = sm->outside_fib_index;
}
end:
if (PREDICT_FALSE (is_addr_only != 0))
- *is_addr_only = is_addr_only_static_mapping (m);
+ *is_addr_only = is_sm_addr_only (m->flags);
if (PREDICT_FALSE (twice_nat != 0))
- *twice_nat = m->twice_nat;
+ {
+ *twice_nat = TWICE_NAT_DISABLED;
+
+ if (is_sm_twice_nat (m->flags))
+ {
+ *twice_nat = TWICE_NAT;
+ }
+ else if (is_sm_self_twice_nat (m->flags))
+ {
+ *twice_nat = TWICE_NAT_SELF;
+ }
+ }
if (PREDICT_FALSE (is_identity_nat != 0))
- *is_identity_nat = is_identity_static_mapping (m);
+ *is_identity_nat = is_sm_identity_nat (m->flags);
if (out != 0)
*out = m;
}
}
- init_ed_k (&kv16, ip->src_address, vnet_buffer (b)->ip.reass.l4_src_port,
- ip->dst_address, vnet_buffer (b)->ip.reass.l4_dst_port,
- fib_index, ip->protocol);
+ if (PREDICT_FALSE (ip->protocol == IP_PROTOCOL_ICMP))
+ {
+ 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))
+ {
+ init_ed_k (&kv16, lookup_saddr.as_u32, lookup_sport,
+ lookup_daddr.as_u32, lookup_dport, rx_fib_index,
+ lookup_protocol);
+ if (!clib_bihash_search_16_8 (&sm->flow_hash, &kv16, &value16))
+ {
+ next_worker_index = ed_value_get_thread_index (&value16);
+ vnet_buffer2 (b)->nat.cached_session_index =
+ ed_value_get_session_index (&value16);
+ goto out;
+ }
+ }
+ }
+
+ init_ed_k (&kv16, ip->src_address.as_u32,
+ vnet_buffer (b)->ip.reass.l4_src_port, ip->dst_address.as_u32,
+ vnet_buffer (b)->ip.reass.l4_dst_port, fib_index,
+ ip->protocol);
if (!clib_bihash_search_16_8 (&sm->flow_hash, &kv16, &value16))
{
}
// dst NAT
- init_ed_k (&kv16, ip->dst_address, vnet_buffer (b)->ip.reass.l4_dst_port,
- ip->src_address, vnet_buffer (b)->ip.reass.l4_src_port,
- rx_fib_index, ip->protocol);
+ init_ed_k (&kv16, ip->dst_address.as_u32,
+ vnet_buffer (b)->ip.reass.l4_dst_port, ip->src_address.as_u32,
+ vnet_buffer (b)->ip.reass.l4_src_port, rx_fib_index,
+ ip->protocol);
if (!clib_bihash_search_16_8 (&sm->flow_hash, &kv16, &value16))
{
next_worker_index = ed_value_get_thread_index (&value16);
u32 rx_fib_index, u8 is_output)
{
snat_main_t *sm = &snat_main;
- clib_bihash_kv_8_8_t kv, value;
clib_bihash_kv_16_8_t kv16, value16;
- u32 proto, next_worker_index = 0;
+ u8 proto, next_worker_index = 0;
u16 port;
snat_static_mapping_t *m;
u32 hash;
- proto = ip_proto_to_nat_proto (ip->protocol);
+ proto = ip->protocol;
- if (PREDICT_FALSE (proto == NAT_PROTOCOL_ICMP))
+ if (PREDICT_FALSE (IP_PROTOCOL_ICMP == proto))
{
ip4_address_t lookup_saddr, lookup_daddr;
u16 lookup_sport, lookup_dport;
b, ip, &lookup_saddr, &lookup_sport, &lookup_daddr, &lookup_dport,
&lookup_protocol))
{
- init_ed_k (&kv16, lookup_saddr, lookup_sport, lookup_daddr,
- lookup_dport, rx_fib_index, lookup_protocol);
+ init_ed_k (&kv16, lookup_saddr.as_u32, lookup_sport,
+ lookup_daddr.as_u32, lookup_dport, rx_fib_index,
+ lookup_protocol);
if (PREDICT_TRUE (
!clib_bihash_search_16_8 (&sm->flow_hash, &kv16, &value16)))
{
}
}
- init_ed_k (&kv16, ip->src_address, vnet_buffer (b)->ip.reass.l4_src_port,
- ip->dst_address, vnet_buffer (b)->ip.reass.l4_dst_port,
- rx_fib_index, ip->protocol);
+ init_ed_k (&kv16, ip->src_address.as_u32,
+ vnet_buffer (b)->ip.reass.l4_src_port, ip->dst_address.as_u32,
+ vnet_buffer (b)->ip.reass.l4_dst_port, rx_fib_index,
+ ip->protocol);
if (PREDICT_TRUE (
!clib_bihash_search_16_8 (&sm->flow_hash, &kv16, &value16)))
/* first try static mappings without port */
if (PREDICT_FALSE (pool_elts (sm->static_mappings)))
{
- init_nat_k (&kv, ip->dst_address, 0, 0, 0);
- if (!clib_bihash_search_8_8
- (&sm->static_mapping_by_external, &kv, &value))
+ m = nat44_ed_sm_o2i_lookup (sm, ip->dst_address, 0, 0, proto);
+ if (m)
{
- m = pool_elt_at_index (sm->static_mappings, value.value);
- next_worker_index = m->workers[0];
- goto done;
+ {
+ next_worker_index = m->workers[0];
+ goto done;
+ }
}
}
/* unknown protocol */
- if (PREDICT_FALSE (proto == NAT_PROTOCOL_OTHER))
+ if (PREDICT_FALSE (nat44_ed_is_unk_proto (proto)))
{
/* use current thread */
next_worker_index = vlib_get_thread_index ();
{
/* 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);
+ proto = inner_ip->protocol;
void *l4_header = ip4_next_header (inner_ip);
switch (proto)
{
- case NAT_PROTOCOL_ICMP:
+ case IP_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:
+ case IP_PROTOCOL_UDP:
+ /* breakthrough */
+ case IP_PROTOCOL_TCP:
port = ((tcp_udp_header_t *) l4_header)->src_port;
break;
default:
/* try static mappings with port */
if (PREDICT_FALSE (pool_elts (sm->static_mappings)))
{
- init_nat_k (&kv, ip->dst_address, port, 0, proto);
- if (!clib_bihash_search_8_8
- (&sm->static_mapping_by_external, &kv, &value))
+ m = nat44_ed_sm_o2i_lookup (sm, ip->dst_address, port, 0, proto);
+ if (m)
{
- m = pool_elt_at_index (sm->static_mappings, value.value);
- if (!is_lb_static_mapping (m))
+ if (!is_sm_lb (m->flags))
{
next_worker_index = m->workers[0];
goto done;
return 1;
sm->max_translations_per_thread = nat44_get_max_session_limit ();
- stat_segment_set_state_counter (sm->max_cfg_sessions_gauge,
- sm->max_translations_per_thread);
+ vlib_stats_set_gauge (sm->max_cfg_sessions_gauge,
+ sm->max_translations_per_thread);
sm->translation_buckets =
nat_calc_bihash_buckets (sm->max_translations_per_thread);
{
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;
reinit_ed_flow_hash ();
- 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);
-
- if (sm->pat)
+ vec_foreach (tsm, sm->per_thread_data)
{
- vec_foreach (tsm, sm->per_thread_data)
- {
- nat44_ed_worker_db_init (tsm, sm->max_translations_per_thread,
- sm->translation_buckets);
- }
+ nat44_ed_worker_db_init (tsm, sm->max_translations_per_thread,
+ sm->translation_buckets);
}
}
vec_free (tsm->per_vrf_sessions_vec);
}
-static void
-nat44_ed_db_free ()
-{
- snat_main_t *sm = &snat_main;
- snat_main_per_thread_data_t *tsm;
-
- 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->pat)
- {
- vec_foreach (tsm, sm->per_thread_data)
- {
- nat44_ed_worker_db_free (tsm);
- }
- }
-}
-
void
nat44_ed_sessions_clear ()
{
reinit_ed_flow_hash ();
- if (sm->pat)
+ vec_foreach (tsm, sm->per_thread_data)
{
- vec_foreach (tsm, sm->per_thread_data)
- {
-
- nat44_ed_worker_db_free (tsm);
- nat44_ed_worker_db_init (tsm, sm->max_translations_per_thread,
- sm->translation_buckets);
- }
+ nat44_ed_worker_db_free (tsm);
+ nat44_ed_worker_db_init (tsm, sm->max_translations_per_thread,
+ sm->translation_buckets);
}
vlib_zero_simple_counter (&sm->total_sessions, 0);
}
static void
-nat_ip4_add_del_addr_only_sm_cb (ip4_main_t * im,
- uword opaque,
- u32 sw_if_index,
- ip4_address_t * address,
- u32 address_length,
- u32 if_address_index, u32 is_delete)
+nat44_ed_add_del_static_mapping_cb (ip4_main_t *im, uword opaque,
+ u32 sw_if_index, ip4_address_t *address,
+ u32 address_length, u32 if_address_index,
+ u32 is_delete)
{
+ snat_static_mapping_resolve_t *rp;
snat_main_t *sm = &snat_main;
- snat_static_map_resolve_t *rp;
- snat_static_mapping_t *m;
- clib_bihash_kv_8_8_t kv, value;
- int i, rv;
- ip4_address_t l_addr;
+ int rv = 0;
if (!sm->enabled)
- return;
-
- for (i = 0; i < vec_len (sm->to_resolve); i++)
{
- rp = sm->to_resolve + i;
- if (rp->addr_only == 0)
- continue;
- if (rp->sw_if_index == sw_if_index)
- goto match;
+ return;
}
- return;
+ vec_foreach (rp, sm->sm_to_resolve)
+ {
+ if (sw_if_index == rp->sw_if_index)
+ {
+ if (is_delete)
+ {
+ if (rp->is_resolved)
+ {
+ rv = nat44_ed_del_static_mapping_internal (
+ rp->l_addr, address[0], rp->l_port, rp->e_port, rp->proto,
+ rp->vrf_id, rp->flags);
+ if (rv)
+ {
+ nat_log_err ("ed del static mapping failed");
+ }
+ else
+ {
+ rp->is_resolved = 0;
+ }
+ }
+ }
+ else
+ {
+ if (!rp->is_resolved)
+ {
+ rv = nat44_ed_add_static_mapping_internal (
+ rp->l_addr, address[0], rp->l_port, rp->e_port, rp->proto,
+ rp->vrf_id, ~0, rp->flags, rp->pool_addr, rp->tag);
+ if (rv)
+ {
+ nat_log_err ("ed add static mapping failed");
+ }
+ else
+ {
+ rp->is_resolved = 1;
+ }
+ }
+ }
+ }
+ }
+}
-match:
- init_nat_k (&kv, *address, rp->addr_only ? 0 : rp->e_port,
- sm->outside_fib_index, rp->addr_only ? 0 : rp->proto);
- if (clib_bihash_search_8_8 (&sm->static_mapping_by_external, &kv, &value))
- m = 0;
- else
- m = pool_elt_at_index (sm->static_mappings, value.value);
+static int
+nat44_ed_get_addr_resolve_record (u32 sw_if_index, u8 twice_nat, int *out)
+{
+ snat_main_t *sm = &snat_main;
+ snat_address_resolve_t *rp;
+ int i;
- if (!is_delete)
+ for (i = 0; i < vec_len (sm->addr_to_resolve); i++)
{
- /* Don't trip over lease renewal, static config */
- if (m)
- return;
+ rp = sm->addr_to_resolve + i;
+
+ if ((rp->sw_if_index == sw_if_index) && (rp->is_twice_nat == twice_nat))
+ {
+ if (out)
+ {
+ *out = i;
+ }
+ return 0;
+ }
}
- else
+ return 1;
+}
+static int
+nat44_ed_del_addr_resolve_record (u32 sw_if_index, u8 twice_nat)
+{
+ snat_main_t *sm = &snat_main;
+ int i;
+ if (!nat44_ed_get_addr_resolve_record (sw_if_index, twice_nat, &i))
{
- if (!m)
- return;
+ vec_del1 (sm->addr_to_resolve, i);
+ return 0;
}
-
- /* Indetity mapping? */
- if (rp->l_addr.as_u32 == 0)
- l_addr.as_u32 = address[0].as_u32;
- else
- l_addr.as_u32 = rp->l_addr.as_u32;
- /* Add the static mapping */
- rv = 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, !is_delete, rp->twice_nat,
- rp->out2in_only, rp->tag, rp->identity_nat,
- rp->pool_addr, rp->exact);
- if (rv)
- nat_elog_notice_X1 (sm, "snat_add_static_mapping returned %d", "i4", rv);
+ return 1;
}
static void
-snat_ip4_add_del_interface_address_cb (ip4_main_t * im,
- uword opaque,
- u32 sw_if_index,
- ip4_address_t * address,
+nat44_ed_add_del_interface_address_cb (ip4_main_t *im, uword opaque,
+ u32 sw_if_index, ip4_address_t *address,
u32 address_length,
u32 if_address_index, u32 is_delete)
{
snat_main_t *sm = &snat_main;
- snat_static_map_resolve_t *rp;
- ip4_address_t l_addr;
- int i, j;
- int rv;
+ snat_address_resolve_t *arp;
+ snat_address_t *ap;
u8 twice_nat = 0;
- snat_address_t *addresses = sm->addresses;
+ int i, rv;
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])
- goto match;
+ return;
}
- for (i = 0; i < vec_len (sm->auto_add_sw_if_indices_twice_nat); i++)
+ if (nat44_ed_get_addr_resolve_record (sw_if_index, twice_nat, &i))
{
twice_nat = 1;
- addresses = sm->twice_nat_addresses;
- if (sw_if_index == sm->auto_add_sw_if_indices_twice_nat[i])
- goto match;
+ if (nat44_ed_get_addr_resolve_record (sw_if_index, twice_nat, &i))
+ {
+ u32 fib_index =
+ ip4_fib_table_get_index_for_sw_if_index (sw_if_index);
+ vec_foreach (ap, sm->addresses)
+ {
+ if ((fib_index == ap->fib_index) &&
+ (address->as_u32 == ap->addr.as_u32))
+ {
+ if (!is_delete)
+ {
+ ap->addr_len = address_length;
+ ap->sw_if_index = sw_if_index;
+ ap->net.as_u32 = (ap->addr.as_u32 >> (32 - ap->addr_len))
+ << (32 - ap->addr_len);
+
+ nat_log_debug (
+ "pool addr %U binds to -> sw_if_idx: %u net: %U/%u",
+ format_ip4_address, &ap->addr, ap->sw_if_index,
+ format_ip4_address, &ap->net, ap->addr_len);
+ }
+ else
+ {
+ ap->addr_len = ~0;
+ }
+ break;
+ }
+ }
+ return;
+ }
}
- return;
+ arp = sm->addr_to_resolve + i;
-match:
if (!is_delete)
{
- /* Don't trip over lease renewal, static config */
- for (j = 0; j < vec_len (addresses); j++)
- if (addresses[j].addr.as_u32 == address->as_u32)
+ if (arp->is_resolved)
+ {
return;
+ }
- (void) snat_add_address (sm, address, ~0, twice_nat);
- /* Scan static map resolution vector */
- for (j = 0; j < vec_len (sm->to_resolve); j++)
+ rv = nat44_ed_add_address (address, ~0, arp->is_twice_nat);
+ if (0 == rv)
{
- rp = sm->to_resolve + j;
- if (rp->addr_only)
- continue;
- /* On this interface? */
- if (rp->sw_if_index == sw_if_index)
- {
- /* Indetity mapping? */
- if (rp->l_addr.as_u32 == 0)
- l_addr.as_u32 = address[0].as_u32;
- else
- l_addr.as_u32 = rp->l_addr.as_u32;
- /* Add the static mapping */
- rv = 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 (sm, "snat_add_static_mapping returned %d",
- "i4", rv);
- }
+ arp->is_resolved = 1;
}
- return;
}
else
{
- (void) snat_del_address (sm, address[0], 1, twice_nat);
- return;
+ if (!arp->is_resolved)
+ {
+ return;
+ }
+
+ rv = nat44_ed_del_address (address[0], arp->is_twice_nat);
+ if (0 == rv)
+ {
+ arp->is_resolved = 0;
+ }
}
}
int
-snat_add_interface_address (snat_main_t * sm, u32 sw_if_index, int is_del,
- u8 twice_nat)
+nat44_ed_add_interface_address (u32 sw_if_index, u8 twice_nat)
{
+ snat_main_t *sm = &snat_main;
ip4_main_t *ip4_main = sm->ip4_main;
ip4_address_t *first_int_addr;
- snat_static_map_resolve_t *rp;
- u32 *indices_to_delete = 0;
- int i, j;
- u32 *auto_add_sw_if_indices =
- twice_nat ? sm->
- auto_add_sw_if_indices_twice_nat : sm->auto_add_sw_if_indices;
+ snat_address_resolve_t *ap;
+ int rv;
- first_int_addr = ip4_interface_first_address (ip4_main, sw_if_index, 0 /* just want the address */
- );
+ if (!sm->enabled)
+ {
+ return VNET_API_ERROR_UNSUPPORTED;
+ }
- for (i = 0; i < vec_len (auto_add_sw_if_indices); i++)
+ if (!nat44_ed_get_addr_resolve_record (sw_if_index, twice_nat, 0))
{
- if (auto_add_sw_if_indices[i] == sw_if_index)
- {
- if (is_del)
- {
- /* if have address remove it */
- if (first_int_addr)
- (void) snat_del_address (sm, first_int_addr[0], 1, twice_nat);
- else
- {
- for (j = 0; j < vec_len (sm->to_resolve); j++)
- {
- rp = sm->to_resolve + j;
- if (rp->sw_if_index == sw_if_index)
- vec_add1 (indices_to_delete, j);
- }
- if (vec_len (indices_to_delete))
- {
- for (j = vec_len (indices_to_delete) - 1; j >= 0; j--)
- vec_del1 (sm->to_resolve, j);
- vec_free (indices_to_delete);
- }
- }
- if (twice_nat)
- vec_del1 (sm->auto_add_sw_if_indices_twice_nat, i);
- else
- vec_del1 (sm->auto_add_sw_if_indices, i);
- }
- else
- return VNET_API_ERROR_VALUE_EXIST;
+ return VNET_API_ERROR_VALUE_EXIST;
+ }
- return 0;
+ vec_add2 (sm->addr_to_resolve, ap, 1);
+ ap->sw_if_index = sw_if_index;
+ ap->is_twice_nat = twice_nat;
+ ap->is_resolved = 0;
+
+ first_int_addr = ip4_interface_first_address (ip4_main, sw_if_index, 0);
+ if (first_int_addr)
+ {
+ rv = nat44_ed_add_address (first_int_addr, ~0, twice_nat);
+ if (0 != rv)
+ {
+ nat44_ed_del_addr_resolve_record (sw_if_index, twice_nat);
+ return rv;
}
+ ap->is_resolved = 1;
}
- if (is_del)
- return VNET_API_ERROR_NO_SUCH_ENTRY;
+ return 0;
+}
- /* add to the auto-address list */
- if (twice_nat)
- vec_add1 (sm->auto_add_sw_if_indices_twice_nat, sw_if_index);
- else
- vec_add1 (sm->auto_add_sw_if_indices, sw_if_index);
+int
+nat44_ed_del_interface_address (u32 sw_if_index, u8 twice_nat)
+{
+ snat_main_t *sm = &snat_main;
+ ip4_main_t *ip4_main = sm->ip4_main;
+ ip4_address_t *first_int_addr;
+
+ if (!sm->enabled)
+ {
+ return VNET_API_ERROR_UNSUPPORTED;
+ }
+
+ if (nat44_ed_del_addr_resolve_record (sw_if_index, twice_nat))
+ {
+ return VNET_API_ERROR_NO_SUCH_ENTRY;
+ }
- /* If the address is already bound - or static - add it now */
+ first_int_addr = ip4_interface_first_address (ip4_main, sw_if_index, 0);
if (first_int_addr)
- (void) snat_add_address (sm, first_int_addr, ~0, twice_nat);
+ {
+ return nat44_ed_del_address (first_int_addr[0], twice_nat);
+ }
return 0;
}
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,
+nat44_ed_del_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_kv_16_8_t kv, value;
- u32 fib_index = fib_table_find (FIB_PROTOCOL_IP4, vrf_id);
+ u32 fib_index;
snat_session_t *s;
snat_main_per_thread_data_t *tsm;
+ if (!sm->enabled)
+ {
+ return VNET_API_ERROR_UNSUPPORTED;
+ }
+
+ fib_index = fib_table_find (FIB_PROTOCOL_IP4, vrf_id);
ip.dst_address.as_u32 = ip.src_address.as_u32 = addr->as_u32;
if (sm->num_workers > 1)
tsm = vec_elt_at_index (
else
tsm = vec_elt_at_index (sm->per_thread_data, sm->num_workers);
- init_ed_k (&kv, *addr, port, *eh_addr, eh_port, fib_index, proto);
+ init_ed_k (&kv, addr->as_u32, port, eh_addr->as_u32, eh_port, fib_index,
+ proto);
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, ed_value_get_session_index (&value)))
return VNET_API_ERROR_UNSPECIFIED;
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);
+ nat44_ed_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;
}
}
}
-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 int
+nat_6t_flow_icmp_translate (vlib_main_t *vm, 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)
+ nat_6t_flow_t *f, ip_protocol_t proto,
+ int is_icmp_inner_ip4, int skip_saddr_rewrite)
{
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) &&
+ if ((IP_PROTOCOL_TCP == proto || IP_PROTOCOL_UDP == proto) &&
!vnet_buffer (b)->ip.reass.is_non_first_fragment)
{
if (!is_icmp_inner_ip4)
udp->dst_port = f->rewrite.sport;
}
- if (NAT_PROTOCOL_TCP == proto)
+ if (IP_PROTOCOL_TCP == proto)
{
ip_csum_t tcp_sum = tcp->checksum;
tcp_sum = ip_csum_sub_even (tcp_sum, f->l3_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)
+ else if (IP_PROTOCOL_UDP == proto && udp->checksum)
{
ip_csum_t udp_sum = udp->checksum;
udp_sum = ip_csum_sub_even (udp_sum, f->l3_csum_delta);
{
if (!is_icmp_inner_ip4)
{ // regular case
- ip->src_address = f->rewrite.saddr;
+ if (!skip_saddr_rewrite)
+ {
+ ip->src_address = f->rewrite.saddr;
+ }
ip->dst_address = f->rewrite.daddr;
}
else
}
}
- 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);
+ if (skip_saddr_rewrite)
+ {
+ ip->checksum = ip4_header_checksum (ip);
+ }
+ else
+ {
+ 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);
+ }
if (0xffff == ip->checksum)
ip->checksum = 0;
ASSERT (ip4_header_checksum_is_valid (ip));
}
static_always_inline int
-nat_6t_flow_icmp_translate (snat_main_t *sm, vlib_buffer_t *b,
+it_fits (vlib_main_t *vm, vlib_buffer_t *b, void *object, size_t size)
+{
+ int result = ((u8 *) object + size <=
+ (u8 *) vlib_buffer_get_current (b) + b->current_length) &&
+ vlib_object_within_buffer_data (vm, b, object, size);
+ return result;
+}
+
+static_always_inline int
+nat_6t_flow_icmp_translate (vlib_main_t *vm, snat_main_t *sm, vlib_buffer_t *b,
ip4_header_t *ip, nat_6t_flow_t *f)
{
if (IP_PROTOCOL_ICMP != ip->protocol)
if ((!vnet_buffer (b)->ip.reass.is_non_first_fragment))
{
- if (icmp->checksum == 0)
- icmp->checksum = 0xffff;
+ if (!it_fits (vm, b, icmp, sizeof (*icmp)))
+ {
+ return NAT_ED_TRNSL_ERR_PACKET_TRUNCATED;
+ }
if (!icmp_type_is_error_message (icmp->type))
{
}
else
{
+ ip_csum_t sum = ip_incremental_checksum (
+ 0, icmp,
+ clib_net_to_host_u16 (ip->length) - ip4_header_bytes (ip));
+ sum = (u16) ~ip_csum_fold (sum);
+ if (sum != 0)
+ {
+ return NAT_ED_TRNSL_ERR_INVALID_CSUM;
+ }
+
// 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;
+ return NAT_ED_TRNSL_ERR_INNER_IP_CORRUPT;
}
- nat_protocol_t inner_proto =
- ip_proto_to_nat_proto (inner_ip->protocol);
+ ip_protocol_t inner_proto = inner_ip->protocol;
- ip_csum_t icmp_sum = icmp->checksum;
+ ip_csum_t old_icmp_sum = icmp->checksum;
+ ip_csum_t old_inner_ip_sum = inner_ip->checksum;
+ ip_csum_t old_udp_sum;
+ ip_csum_t old_tcp_sum;
+ ip_csum_t new_icmp_sum;
+ udp_header_t *udp;
+ tcp_header_t *tcp;
switch (inner_proto)
{
- case NAT_PROTOCOL_UDP:
- case NAT_PROTOCOL_TCP:
+ case IP_PROTOCOL_UDP:
+ udp = (udp_header_t *) (inner_ip + 1);
+ if (!it_fits (vm, b, udp, sizeof (*udp)))
+ {
+ return NAT_ED_TRNSL_ERR_PACKET_TRUNCATED;
+ }
+ old_udp_sum = udp->checksum;
+ nat_6t_flow_ip4_translate (sm, b, inner_ip, f, inner_proto,
+ 1 /* is_icmp_inner_ip4 */,
+ 0 /* skip_saddr_rewrite */);
+ new_icmp_sum = ip_csum_sub_even (old_icmp_sum, f->l3_csum_delta);
+ new_icmp_sum = ip_csum_sub_even (new_icmp_sum, f->l4_csum_delta);
+ new_icmp_sum =
+ ip_csum_update (new_icmp_sum, old_inner_ip_sum,
+ inner_ip->checksum, ip4_header_t, checksum);
+ new_icmp_sum =
+ ip_csum_update (new_icmp_sum, old_udp_sum, udp->checksum,
+ udp_header_t, checksum);
+ new_icmp_sum = ip_csum_fold (new_icmp_sum);
+ icmp->checksum = new_icmp_sum;
+ break;
+ case IP_PROTOCOL_TCP:
+ tcp = (tcp_header_t *) (inner_ip + 1);
+ if (!it_fits (vm, b, tcp, sizeof (*tcp)))
+ {
+ return NAT_ED_TRNSL_ERR_PACKET_TRUNCATED;
+ }
+ old_tcp_sum = tcp->checksum;
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);
+ 1 /* is_icmp_inner_ip4 */,
+ 0 /* skip_saddr_rewrite */);
+ new_icmp_sum = ip_csum_sub_even (old_icmp_sum, f->l3_csum_delta);
+ new_icmp_sum = ip_csum_sub_even (new_icmp_sum, f->l4_csum_delta);
+ new_icmp_sum =
+ ip_csum_update (new_icmp_sum, old_inner_ip_sum,
+ inner_ip->checksum, ip4_header_t, checksum);
+ new_icmp_sum =
+ ip_csum_update (new_icmp_sum, old_tcp_sum, tcp->checksum,
+ tcp_header_t, checksum);
+ new_icmp_sum = ip_csum_fold (new_icmp_sum);
+ icmp->checksum = new_icmp_sum;
break;
- case NAT_PROTOCOL_ICMP:
+ case IP_PROTOCOL_ICMP:
+ nat_6t_flow_ip4_translate (sm, b, inner_ip, f, inner_proto,
+ 1 /* is_icmp_inner_ip4 */,
+ 0 /* skip_saddr_rewrite */);
if (f->ops & NAT_FLOW_OP_ICMP_ID_REWRITE)
{
icmp46_header_t *inner_icmp = ip4_next_header (inner_ip);
+ if (!it_fits (vm, b, inner_icmp, sizeof (*inner_icmp)))
+ {
+ return NAT_ED_TRNSL_ERR_PACKET_TRUNCATED;
+ }
icmp_echo_header_t *inner_echo =
(icmp_echo_header_t *) (inner_icmp + 1);
if (f->rewrite.icmp_id != inner_echo->identifier)
}
}
}
+
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)
+static_always_inline nat_translation_error_e
+nat_6t_flow_buf_translate (vlib_main_t *vm, snat_main_t *sm, vlib_buffer_t *b,
+ ip4_header_t *ip, nat_6t_flow_t *f,
+ ip_protocol_t proto, int is_output_feature,
+ int is_i2o)
{
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)
+ if (IP_PROTOCOL_ICMP == proto)
{
- return nat_6t_flow_icmp_translate (sm, b, ip, f);
+ if (ip->src_address.as_u32 != f->rewrite.saddr.as_u32)
+ {
+ // packet is returned from a router, not from destination
+ // skip source address rewrite if in o2i path
+ nat_6t_flow_ip4_translate (sm, b, ip, f, proto,
+ 0 /* is_icmp_inner_ip4 */,
+ !is_i2o /* skip_saddr_rewrite */);
+ }
+ else
+ {
+ nat_6t_flow_ip4_translate (sm, b, ip, f, proto,
+ 0 /* is_icmp_inner_ip4 */,
+ 0 /* skip_saddr_rewrite */);
+ }
+ return nat_6t_flow_icmp_translate (vm, sm, b, ip, f);
}
+ nat_6t_flow_ip4_translate (sm, b, ip, f, proto, 0 /* is_icmp_inner_ip4 */,
+ 0 /* skip_saddr_rewrite */);
+
return NAT_ED_TRNSL_ERR_SUCCESS;
}
+nat_translation_error_e
+nat_6t_flow_buf_translate_i2o (vlib_main_t *vm, snat_main_t *sm,
+ vlib_buffer_t *b, ip4_header_t *ip,
+ nat_6t_flow_t *f, ip_protocol_t proto,
+ int is_output_feature)
+{
+ return nat_6t_flow_buf_translate (vm, sm, b, ip, f, proto, is_output_feature,
+ 1 /* is_i2o */);
+}
+
+nat_translation_error_e
+nat_6t_flow_buf_translate_o2i (vlib_main_t *vm, snat_main_t *sm,
+ vlib_buffer_t *b, ip4_header_t *ip,
+ nat_6t_flow_t *f, ip_protocol_t proto,
+ int is_output_feature)
+{
+ return nat_6t_flow_buf_translate (vm, sm, b, ip, f, proto, is_output_feature,
+ 0 /* is_i2o */);
+}
+
u8 *
format_nat_6t (u8 *s, va_list *args)
{
case NAT_ED_TRNSL_ERR_FLOW_MISMATCH:
s = format (s, "flow-mismatch");
break;
+ case NAT_ED_TRNSL_ERR_PACKET_TRUNCATED:
+ s = format (s, "packet-truncated");
+ break;
+ case NAT_ED_TRNSL_ERR_INNER_IP_CORRUPT:
+ s = format (s, "inner-ip-corrupted");
+ break;
+ case NAT_ED_TRNSL_ERR_INVALID_CSUM:
+ s = format (s, "invalid-checksum");
+ break;
}
return s;
}
return s;
}
+static inline void
+nat_syslog_nat44_sess (u32 ssubix, u32 sfibix, ip4_address_t *isaddr,
+ u16 isport, ip4_address_t *xsaddr, u16 xsport,
+ ip4_address_t *idaddr, u16 idport,
+ ip4_address_t *xdaddr, u16 xdport, u8 proto, u8 is_add,
+ u8 is_twicenat)
+{
+ syslog_msg_t syslog_msg;
+ fib_table_t *fib;
+
+ if (!syslog_is_enabled ())
+ return;
+
+ if (syslog_severity_filter_block (SADD_SDEL_SEVERITY))
+ return;
+
+ fib = fib_table_get (sfibix, FIB_PROTOCOL_IP4);
+
+ syslog_msg_init (&syslog_msg, NAT_FACILITY, SADD_SDEL_SEVERITY, NAT_APPNAME,
+ is_add ? SADD_MSGID : SDEL_MSGID);
+
+ syslog_msg_sd_init (&syslog_msg, NSESS_SDID);
+ syslog_msg_add_sd_param (&syslog_msg, SSUBIX_SDPARAM_NAME, "%d", ssubix);
+ syslog_msg_add_sd_param (&syslog_msg, SVLAN_SDPARAM_NAME, "%d",
+ fib->ft_table_id);
+ syslog_msg_add_sd_param (&syslog_msg, IATYP_SDPARAM_NAME, IATYP_IPV4);
+ syslog_msg_add_sd_param (&syslog_msg, ISADDR_SDPARAM_NAME, "%U",
+ format_ip4_address, isaddr);
+ syslog_msg_add_sd_param (&syslog_msg, ISPORT_SDPARAM_NAME, "%d",
+ clib_net_to_host_u16 (isport));
+ syslog_msg_add_sd_param (&syslog_msg, XATYP_SDPARAM_NAME, IATYP_IPV4);
+ syslog_msg_add_sd_param (&syslog_msg, XSADDR_SDPARAM_NAME, "%U",
+ format_ip4_address, xsaddr);
+ syslog_msg_add_sd_param (&syslog_msg, XSPORT_SDPARAM_NAME, "%d",
+ clib_net_to_host_u16 (xsport));
+ syslog_msg_add_sd_param (&syslog_msg, PROTO_SDPARAM_NAME, "%d", proto);
+ syslog_msg_add_sd_param (&syslog_msg, XDADDR_SDPARAM_NAME, "%U",
+ format_ip4_address, xdaddr);
+ syslog_msg_add_sd_param (&syslog_msg, XDPORT_SDPARAM_NAME, "%d",
+ clib_net_to_host_u16 (xdport));
+ if (is_twicenat)
+ {
+ syslog_msg_add_sd_param (&syslog_msg, IDADDR_SDPARAM_NAME, "%U",
+ format_ip4_address, idaddr);
+ syslog_msg_add_sd_param (&syslog_msg, IDPORT_SDPARAM_NAME, "%d",
+ clib_net_to_host_u16 (idport));
+ }
+
+ syslog_msg_send (&syslog_msg);
+}
+
+void
+nat_syslog_nat44_sadd (u32 ssubix, u32 sfibix, ip4_address_t *isaddr,
+ u16 isport, ip4_address_t *idaddr, u16 idport,
+ ip4_address_t *xsaddr, u16 xsport,
+ ip4_address_t *xdaddr, u16 xdport, u8 proto,
+ u8 is_twicenat)
+{
+ nat_syslog_nat44_sess (ssubix, sfibix, isaddr, isport, xsaddr, xsport,
+ idaddr, idport, xdaddr, xdport, proto, 1,
+ is_twicenat);
+}
+
+void
+nat_syslog_nat44_sdel (u32 ssubix, u32 sfibix, ip4_address_t *isaddr,
+ u16 isport, ip4_address_t *idaddr, u16 idport,
+ ip4_address_t *xsaddr, u16 xsport,
+ ip4_address_t *xdaddr, u16 xdport, u8 proto,
+ u8 is_twicenat)
+{
+ nat_syslog_nat44_sess (ssubix, sfibix, isaddr, isport, xsaddr, xsport,
+ idaddr, idport, xdaddr, xdport, proto, 0,
+ is_twicenat);
+}
+
+u8 *
+format_nat44_ed_tcp_state (u8 *s, va_list *args)
+{
+ nat44_ed_tcp_state_e e = va_arg (*args, nat44_ed_tcp_state_e);
+ switch (e)
+ {
+ case NAT44_ED_TCP_STATE_CLOSED:
+ s = format (s, "closed");
+ break;
+ case NAT44_ED_TCP_STATE_SYN_I2O:
+ s = format (s, "SYN seen in in2out direction");
+ break;
+ case NAT44_ED_TCP_STATE_SYN_O2I:
+ s = format (s, "SYN seen in out2in direction");
+ break;
+ case NAT44_ED_TCP_STATE_ESTABLISHED:
+ s = format (s, "SYN seen in both directions/established");
+ break;
+ case NAT44_ED_TCP_STATE_FIN_I2O:
+ s = format (s, "FIN seen in in2out direction");
+ break;
+ case NAT44_ED_TCP_STATE_FIN_O2I:
+ s = format (s, "FIN seen in out2in direction");
+ break;
+ case NAT44_ED_TCP_STATE_RST_TRANS:
+ s = format (s, "RST seen/transitory timeout");
+ break;
+ case NAT44_ED_TCP_STATE_FIN_TRANS:
+ s = format (s, "FIN seen in both directions/transitory timeout");
+ break;
+ case NAT44_ED_TCP_STATE_FIN_REOPEN_SYN_O2I:
+ s = format (s, "FIN seen in both directions/transitory timeout/session "
+ "reopening in out2in direction");
+ break;
+ case NAT44_ED_TCP_STATE_FIN_REOPEN_SYN_I2O:
+ s = format (s, "FIN seen in both directions/transitory timeout/session "
+ "reopening in in2out direction");
+ break;
+ case NAT44_ED_TCP_N_STATE:
+ s = format (s, "BUG! unexpected N_STATE! BUG!");
+ break;
+ }
+ return s;
+}
+
/*
* fd.io coding-style-patch-verification: ON
*
Code Review / vpp.git / blobdiff