fib_table_entry_delete (fib_index, &prefix, sm->fib_src_low);
}
+static int
+is_snat_address_used_in_static_mapping (snat_main_t *sm, ip4_address_t addr)
+{
+ snat_static_mapping_t *m;
+ pool_foreach (m, sm->static_mappings)
+ {
+ if (is_sm_addr_only (m->flags) || is_sm_out2in_only (m->flags) ||
+ is_sm_identity_nat (m->flags))
+ continue;
+ if (m->external_addr.as_u32 == addr.as_u32)
+ return 1;
+ }
+ return 0;
+}
+
int
-snat_add_address (snat_main_t * sm, ip4_address_t * addr, u32 vrf_id,
- u8 twice_nat)
+nat44_ed_add_address (ip4_address_t *addr, u32 vrf_id, u8 twice_nat)
{
- snat_address_t *ap;
- snat_interface_t *i;
+ snat_main_t *sm = &snat_main;
vlib_thread_main_t *tm = vlib_get_thread_main ();
+ snat_address_t *ap, *addresses;
+ snat_interface_t *i;
+
+ addresses = twice_nat ? sm->twice_nat_addresses : sm->addresses;
- /* Check if address already exists */
- vec_foreach (ap, 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)
{
}
if (twice_nat)
- vec_add2 (sm->twice_nat_addresses, ap, 1);
+ {
+ vec_add2 (sm->twice_nat_addresses, ap, 1);
+ }
else
- vec_add2 (sm->addresses, ap, 1);
+ {
+ vec_add2 (sm->addresses, ap, 1);
+ }
+ 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);
- else
- ap->fib_index = ~0;
-
- #define _(N, i, n, s) \
- clib_memset(ap->busy_##n##_port_refcounts, 0, sizeof(ap->busy_##n##_port_refcounts));\
- ap->busy_##n##_ports = 0; \
- ap->busy_##n##_ports_per_thread = 0;\
- vec_validate_init_empty (ap->busy_##n##_ports_per_thread, tm->n_vlib_mains - 1, 0);
- foreach_nat_protocol
- #undef _
- if (twice_nat)
- return 0;
-
- /* Add external address to FIB */
- pool_foreach (i, sm->interfaces)
- {
- if (nat_interface_is_inside (i))
- continue;
+ if (vrf_id != ~0)
+ {
+ ap->fib_index = fib_table_find_or_create_and_lock (
+ FIB_PROTOCOL_IP4, vrf_id, sm->fib_src_low);
+ }
- 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;
+#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 _
- snat_add_del_addr_to_fib (addr, 32, i->sw_if_index, 1);
- break;
+ if (!twice_nat)
+ {
+ pool_foreach (i, sm->interfaces)
+ {
+ if (!nat_interface_is_inside (i))
+ {
+ 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))
+ {
+ snat_add_del_addr_to_fib (addr, 32, i->sw_if_index, 1);
+ break;
+ }
+ }
}
-
return 0;
}
-static int
-is_snat_address_used_in_static_mapping (snat_main_t * sm, ip4_address_t addr)
+int
+nat44_ed_del_address (ip4_address_t addr, u8 delete_sm, 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;
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_interface_t *i;
+ int j;
- return 0;
-}
+ addresses = twice_nat ? sm->twice_nat_addresses : sm->addresses;
-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;
+ for (j = 0; j < vec_len (addresses); j++)
+ {
+ if (addresses[j].addr.as_u32 == addr.as_u32)
+ {
+ a = addresses + j;
+ break;
+ }
+ }
+ if (!a)
+ {
+ nat_log_err ("no such address");
+ return VNET_API_ERROR_NO_SUCH_ENTRY;
+ }
- 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;
+ if (delete_sm)
+ {
+ pool_foreach (m, sm->static_mappings)
+ {
+ if (m->external_addr.as_u32 == addr.as_u32)
+ {
+ nat44_ed_del_static_mapping (m->local_addr, m->external_addr,
+ m->local_port, m->external_port,
+ m->proto, m->vrf_id, ~0, m->flags);
+ }
+ }
+ }
+ else
+ {
+ // TODO: why ?
+ // 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);
+ }
+ }
+ 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);
+ }
+ vec_free (ses_to_be_removed);
+ }
+ }
+
+#define _(N, i, n, s) vec_free (a->busy_##n##_ports_per_thread);
+ foreach_nat_protocol
+#undef _
+
+ if (!twice_nat)
+ {
+ vec_del1 (sm->addresses, j);
+ // delete external address from FIB
+ pool_foreach (i, sm->interfaces)
+ {
+ if (!nat_interface_is_inside (i))
+ {
+ snat_add_del_addr_to_fib (&addr, 32, i->sw_if_index, 0);
+ break;
+ }
+ }
+ pool_foreach (i, sm->output_feature_interfaces)
+ {
+ if (!nat_interface_is_inside (i))
+ {
+ snat_add_del_addr_to_fib (&addr, 32, i->sw_if_index, 0);
+ break;
+ }
+ }
+ }
+ else { vec_del1 (sm->twice_nat_addresses, j); }
+ return 0;
}
u32
}
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)
+nat44_ed_reserve_port (ip4_address_t addr, u16 port, nat_protocol_t proto)
{
+ u32 ti = get_thread_idx_by_port (port);
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;
int i;
- /* If the external address is a specific interface address */
- if (sw_if_index != ~0)
+ for (i = 0; i < vec_len (sm->addresses); i++)
{
- ip4_address_t *first_int_addr;
+ a = sm->addresses + i;
- for (i = 0; i < vec_len (sm->to_resolve); i++)
- {
- 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;
- }
+ if (a->addr.as_u32 != addr.as_u32)
+ continue;
- rp_match = rp;
- break;
+ switch (proto)
+ {
+#define _(N, j, n, s) \
+ case NAT_PROTOCOL_##N: \
+ if (a->busy_##n##_port_refcounts[port]) \
+ goto done; \
+ ++a->busy_##n##_port_refcounts[port]; \
+ if (port > 1024) \
+ { \
+ a->busy_##n##_ports++; \
+ a->busy_##n##_ports_per_thread[ti]++; \
+ } \
+ break;
+ foreach_nat_protocol
+#undef _
+ default : nat_elog_info (sm, "unknown protocol");
+ goto done;
}
- /* Might be already set... */
- first_int_addr = ip4_interface_first_address
- (sm->ip4_main, sw_if_index, 0 /* just want the address */ );
+ return 0;
+ }
- if (is_add)
- {
- if (rp_match)
- return VNET_API_ERROR_VALUE_EXIST;
+done:
+ return 1;
+}
- 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);
+int
+nat44_ed_free_port (ip4_address_t addr, u16 port, nat_protocol_t proto)
+{
+ u32 ti = get_thread_idx_by_port (port);
+ snat_main_t *sm = &snat_main;
+ snat_address_t *a = 0;
+ int i;
- /* DHCP resolution required? */
- if (first_int_addr == 0)
- {
- return 0;
- }
- 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;
- }
- }
- else
- {
- if (!rp_match)
- return VNET_API_ERROR_NO_SUCH_ENTRY;
+ for (i = 0; i < vec_len (sm->addresses); i++)
+ {
+ a = sm->addresses + i;
- vec_del1 (sm->to_resolve, i);
+ if (a->addr.as_u32 != addr.as_u32)
+ continue;
- if (first_int_addr)
- {
- 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;
- }
- else
- return 0;
+ switch (proto)
+ {
+#define _(N, j, n, s) \
+ case NAT_PROTOCOL_##N: \
+ --a->busy_##n##_port_refcounts[port]; \
+ if (port > 1024) \
+ { \
+ a->busy_##n##_ports--; \
+ a->busy_##n##_ports_per_thread[ti]--; \
+ } \
+ break;
+ foreach_nat_protocol
+#undef _
+ default : nat_elog_info (sm, "unknown protocol");
+ goto done;
}
+
+ return 0;
}
- init_nat_k (&kv, e_addr, addr_only ? 0 : e_port, 0, addr_only ? 0 : proto);
- if (clib_bihash_search_8_8 (&sm->static_mapping_by_external, &kv, &value))
- m = 0;
- else
- m = pool_elt_at_index (sm->static_mappings, value.value);
+done:
+ return 1;
+}
- if (is_add)
- {
- if (m)
- {
- 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;
- }
+void
+nat44_ed_add_resolve_record (ip4_address_t l_addr, u16 l_port, u16 e_port,
+ nat_protocol_t proto, u32 vrf_id, u32 sw_if_index,
+ u32 flags, ip4_address_t pool_addr, u8 *tag)
+{
+ snat_static_map_resolve_t *rp;
+ snat_main_t *sm = &snat_main;
- if (twice_nat && addr_only)
- return VNET_API_ERROR_UNSUPPORTED;
+ vec_add2 (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);
+}
- /* 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);
- }
+int
+nat44_ed_get_resolve_record (ip4_address_t l_addr, u16 l_port, u16 e_port,
+ nat_protocol_t proto, u32 vrf_id, u32 sw_if_index,
+ u32 flags, int *out)
+{
+ snat_static_map_resolve_t *rp;
+ snat_main_t *sm = &snat_main;
+ int i;
- 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;
- }
+ for (i = 0; i < vec_len (sm->to_resolve); i++)
+ {
+ rp = sm->to_resolve + i;
- /* 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))
+ if (rp->sw_if_index == sw_if_index && rp->vrf_id == vrf_id)
{
- for (i = 0; i < vec_len (sm->addresses); i++)
+ if (is_sm_identity_nat (rp->flags) && is_sm_identity_nat (flags))
{
- if (sm->addresses[i].addr.as_u32 == e_addr.as_u32)
+ if (!(is_sm_addr_only (rp->flags) && is_sm_addr_only (flags)))
{
- a = sm->addresses + i;
- /* External port must be unused */
- switch (proto)
+ if (rp->e_port != e_port || rp->proto != 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;
+ continue;
}
- break;
}
}
- /* External address must be allocated */
- if (!a && (l_addr.as_u32 != e_addr.as_u32))
+ else if (rp->l_addr.as_u32 == l_addr.as_u32)
{
- if (sw_if_index != ~0)
+ if (!(is_sm_addr_only (rp->flags) && is_sm_addr_only (flags)))
{
- for (i = 0; i < vec_len (sm->to_resolve); i++)
+ if (rp->l_port != l_port || rp->e_port != e_port ||
+ rp->proto != proto)
{
- 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;
+ continue;
}
}
- return VNET_API_ERROR_NO_SUCH_ENTRY;
}
+ else
+ {
+ continue;
+ }
+ if (out)
+ {
+ *out = i;
+ }
+ return 0;
}
+ }
+ return 1;
+}
- 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;
+int
+nat44_ed_del_resolve_record (ip4_address_t l_addr, u16 l_port, u16 e_port,
+ nat_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->to_resolve, i);
+ return 0;
+ }
+ return 1;
+}
- if (twice_nat == TWICE_NAT && exact)
- {
- m->flags |= NAT_STATIC_MAPPING_FLAG_EXACT_ADDRESS;
- m->pool_addr = pool_addr;
- }
+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 (out2in_only)
- m->flags |= NAT_STATIC_MAPPING_FLAG_OUT2IN_ONLY;
- if (addr_only)
- m->flags |= NAT_STATIC_MAPPING_FLAG_ADDR_ONLY;
- if (identity_nat)
- {
- m->flags |= NAT_STATIC_MAPPING_FLAG_IDENTITY_NAT;
- pool_get (m->locals, local);
- local->vrf_id = vrf_id;
- local->fib_index = fib_index;
- }
- else
+ if (is_sm_twice_nat (flags) || is_sm_self_twice_nat (flags))
+ {
+ if (is_sm_addr_only (flags) || is_sm_identity_nat (flags))
{
- m->vrf_id = vrf_id;
- m->fib_index = fib_index;
+ return VNET_API_ERROR_UNSUPPORTED;
}
- if (!addr_only)
- {
- m->local_port = l_port;
- m->external_port = e_port;
- m->proto = proto;
+ }
+ return 0;
+}
+
+int
+nat44_ed_add_static_mapping (ip4_address_t l_addr, ip4_address_t e_addr,
+ u16 l_port, u16 e_port, nat_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;
+ clib_bihash_kv_8_8_t kv, value;
+ snat_interface_t *interface;
+ nat44_lb_addr_port_t *local;
+ snat_static_mapping_t *m;
+ u32 fib_index = ~0;
+ int rv;
+
+ if (!sm->enabled)
+ {
+ return VNET_API_ERROR_UNSUPPORTED;
+ }
+
+ rv = nat44_ed_validate_sm_input (flags);
+ if (rv != 0)
+ {
+ return rv;
+ }
+
+ if (is_sm_addr_only (flags))
+ {
+ e_port = l_port = proto = 0;
+ }
+
+ if (is_sm_switch_address (flags))
+ {
+ // this mapping is interface bound
+ ip4_address_t *first_int_addr;
+
+ // check if this record isn't registered for resolve
+ if (!nat44_ed_get_resolve_record (l_addr, l_port, e_port, proto, vrf_id,
+ sw_if_index, flags, 0))
+ {
+ return VNET_API_ERROR_VALUE_EXIST;
}
+ // register record for resolve
+ nat44_ed_add_resolve_record (l_addr, l_port, e_port, proto, vrf_id,
+ sw_if_index, flags, pool_addr, tag);
- if (sm->num_workers > 1)
+ first_int_addr =
+ ip4_interface_first_address (sm->ip4_main, sw_if_index, 0);
+ if (!first_int_addr)
{
- 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]);
+ // dhcp resolution required
+ return 0;
+ }
+
+ e_addr.as_u32 = first_int_addr->as_u32;
+ }
+
+ if (is_sm_identity_nat (flags))
+ {
+ l_port = e_port;
+ l_addr.as_u32 = e_addr.as_u32;
+ }
+
+ // fib index 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 = pool_elt_at_index (sm->static_mappings, value.value);
+ if (!is_sm_identity_nat (m->flags))
+ {
+ return VNET_API_ERROR_VALUE_EXIST;
}
- else
- tsm = vec_elt_at_index (sm->per_thread_data, sm->num_workers);
- if (!out2in_only)
+ // case:
+ // adding local identity nat record for different vrf table
+ pool_foreach (local, m->locals)
{
- 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);
+ if (local->vrf_id == vrf_id)
+ {
+ return VNET_API_ERROR_VALUE_EXIST;
+ }
}
- 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);
+ 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;
+ }
+
+ if (vrf_id != ~0)
+ {
+ fib_index = fib_table_find_or_create_and_lock (FIB_PROTOCOL_IP4, vrf_id,
+ sm->fib_src_low);
}
else
{
- if (!m)
+ // 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)))
+ {
+ init_nat_k (&kv, l_addr, l_port, fib_index, proto);
+ if (!clib_bihash_search_8_8 (&sm->static_mapping_by_local, &kv, &value))
{
- if (sw_if_index != ~0)
- return 0;
- else
- return VNET_API_ERROR_NO_SUCH_ENTRY;
+ return VNET_API_ERROR_VALUE_EXIST;
}
+ }
- if (identity_nat)
+ if (!(is_sm_out2in_only (flags) || is_sm_addr_only (flags) ||
+ sm->static_mapping_only))
+ {
+ if (nat44_ed_reserve_port (e_addr, e_port, proto))
{
- if (vrf_id == ~0)
- vrf_id = sm->inside_vrf_id;
+ // remove resolve record
+ if (is_sm_switch_address (flags) && !is_sm_identity_nat (flags))
+ {
+ 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;
+ }
+ }
- 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;
+ 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->tag = vec_dup (tag);
+
+ if (is_sm_exact_address (flags) && is_sm_twice_nat (flags))
+ {
+ m->pool_addr = pool_addr;
+ }
+
+ 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 = pool_elt_at_index (m->locals, find);
- fib_index = local->fib_index;
- pool_put (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))
+ {
+ 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);
+ }
+
+ 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);
+
+ 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);
+ }
+
+ if (is_sm_identity_nat (flags) || !is_sm_addr_only (flags))
+ return 0;
+
+ pool_foreach (interface, sm->interfaces)
+ {
+ if (nat_interface_is_inside (interface))
+ continue;
+
+ snat_add_del_addr_to_fib (&e_addr, 32, interface->sw_if_index, 1);
+ break;
+ }
+
+ pool_foreach (interface, sm->output_feature_interfaces)
+ {
+ if (nat_interface_is_inside (interface))
+ continue;
+
+ snat_add_del_addr_to_fib (&e_addr, 32, interface->sw_if_index, 1);
+ break;
+ }
+
+ return 0;
+}
+
+int
+nat44_ed_del_static_mapping (ip4_address_t l_addr, ip4_address_t e_addr,
+ u16 l_port, u16 e_port, nat_protocol_t proto,
+ u32 vrf_id, u32 sw_if_index, u32 flags)
+{
+ snat_main_per_thread_data_t *tsm;
+ snat_main_t *sm = &snat_main;
+
+ clib_bihash_kv_8_8_t kv, value;
+ snat_interface_t *interface;
+ nat44_lb_addr_port_t *local;
+ snat_static_mapping_t *m;
+ u32 fib_index = ~0;
+ int rv;
+
+ if (!sm->enabled)
+ {
+ return VNET_API_ERROR_UNSUPPORTED;
+ }
+
+ rv = nat44_ed_validate_sm_input (flags);
+ if (rv != 0)
+ {
+ return rv;
+ }
+
+ if (is_sm_addr_only (flags))
+ {
+ e_port = l_port = proto = 0;
+ }
+
+ if (is_sm_switch_address (flags))
+ {
+ // this mapping is interface bound
+ ip4_address_t *first_int_addr;
+
+ // delete record registered for resolve
+ 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;
}
- else
- fib_index = m->fib_index;
- /* Free external address port */
- if (!(addr_only || sm->static_mapping_only || out2in_only))
+ first_int_addr =
+ ip4_interface_first_address (sm->ip4_main, sw_if_index, 0);
+ if (!first_int_addr)
{
- for (i = 0; i < vec_len (sm->addresses); i++)
+ // dhcp resolution required
+ return 0;
+ }
+
+ e_addr.as_u32 = first_int_addr->as_u32;
+ }
+
+ if (is_sm_identity_nat (flags))
+ {
+ l_port = e_port;
+ l_addr.as_u32 = e_addr.as_u32;
+ }
+
+ // fib index 0
+ init_nat_k (&kv, e_addr, e_port, 0, proto);
+
+ if (clib_bihash_search_8_8 (&sm->static_mapping_by_external, &kv, &value))
+ {
+ if (is_sm_switch_address (flags))
+ {
+ return 0;
+ }
+ return VNET_API_ERROR_NO_SUCH_ENTRY;
+ }
+
+ m = pool_elt_at_index (sm->static_mappings, value.value);
+
+ if (is_sm_identity_nat (flags))
+ {
+ u8 failure = 1;
+
+ if (!is_sm_switch_address (flags))
+ {
+ vrf_id = sm->inside_vrf_id;
+ }
+
+ pool_foreach (local, m->locals)
+ {
+ 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);
+ failure = 0;
}
}
+ if (failure)
+ {
+ return VNET_API_ERROR_NO_SUCH_ENTRY;
+ }
+ }
+ else
+ {
+ fib_index = m->fib_index;
+ }
+
+ if (!(is_sm_out2in_only (flags) || is_sm_addr_only (flags) ||
+ sm->static_mapping_only))
+ {
+ if (nat44_ed_free_port (e_addr, e_port, proto))
+ {
+ return VNET_API_ERROR_INVALID_VALUE;
+ }
+ }
+
+ if (!is_sm_out2in_only (flags))
+ {
+ init_nat_k (&kv, l_addr, l_port, fib_index, proto);
+ clib_bihash_add_del_8_8 (&sm->static_mapping_by_local, &kv, 0);
+ }
+
+ if (!sm->static_mapping_only || sm->static_mapping_connection_tracking)
+ {
+ // 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);
- 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);
+ 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);
+ }
- /* Delete session(s) for static mapping if exist */
- if (!(sm->static_mapping_only) ||
- (sm->static_mapping_only && sm->static_mapping_connection_tracking))
- {
- nat_ed_static_mapping_del_sessions (
- sm, tsm, m->local_addr, m->local_port, m->proto, fib_index,
- addr_only, e_addr, e_port);
- }
+ fib_table_unlock (fib_index, FIB_PROTOCOL_IP4, sm->fib_src_low);
- fib_table_unlock (fib_index, FIB_PROTOCOL_IP4, sm->fib_src_low);
- if (pool_elts (m->locals))
- return 0;
+ 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);
+ // fib_index 0
+ init_nat_k (&kv, e_addr, e_port, 0, proto);
+ clib_bihash_add_del_8_8 (&sm->static_mapping_by_external, &kv, 0);
- vec_free (m->tag);
- vec_free (m->workers);
- /* Delete static mapping from pool */
- pool_put (sm->static_mappings, m);
- }
+ vec_free (m->tag);
+ vec_free (m->workers);
+ pool_put (sm->static_mappings, m);
- if (!addr_only || (l_addr.as_u32 == e_addr.as_u32))
+ if (is_sm_identity_nat (flags) || !is_sm_addr_only (flags))
return 0;
- /* Add/delete external address to FIB */
pool_foreach (interface, sm->interfaces)
- {
- if (nat_interface_is_inside (interface))
- continue;
+ {
+ if (nat_interface_is_inside (interface))
+ continue;
+
+ snat_add_del_addr_to_fib (&e_addr, 32, interface->sw_if_index, 0);
+ break;
+ }
- 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 (nat_interface_is_inside (interface))
+ continue;
- snat_add_del_addr_to_fib (&e_addr, 32, interface->sw_if_index, is_add);
- break;
- }
+ snat_add_del_addr_to_fib (&e_addr, 32, interface->sw_if_index, 0);
+ break;
+ }
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,
+ nat_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 i;
+
+ if (!sm->enabled)
+ {
+ return VNET_API_ERROR_UNSUPPORTED;
+ }
+
init_nat_k (&kv, e_addr, e_port, 0, proto);
if (clib_bihash_search_8_8 (&sm->static_mapping_by_external, &kv, &value))
m = 0;
else
m = pool_elt_at_index (sm->static_mappings, value.value);
- if (is_add)
- {
- if (m)
- return VNET_API_ERROR_VALUE_EXIST;
+ if (m)
+ return VNET_API_ERROR_VALUE_EXIST;
- if (vec_len (locals) < 2)
- return VNET_API_ERROR_INVALID_VALUE;
+ if (vec_len (locals) < 2)
+ return VNET_API_ERROR_INVALID_VALUE;
- /* 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))
+ /* Find external address in allocated addresses and reserve port for
+ address and port pair mapping when dynamic translations enabled */
+ if (!(sm->static_mapping_only || is_sm_out2in_only (flags)))
+ {
+ 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)
+ a = sm->addresses + i;
+ /* External port must be unused */
+ switch (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
+#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;
+ default : nat_elog_info (sm, "unknown protocol");
+ return VNET_API_ERROR_INVALID_VALUE_2;
}
+ break;
}
- /* External address must be allocated */
- if (!a)
- return VNET_API_ERROR_NO_SUCH_ENTRY;
}
+ /* 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;
+ 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;
- 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))
+ 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;
+
+ 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))
+ {
+ nat_elog_err (sm, "static_mapping_by_external key add failed");
+ return VNET_API_ERROR_UNSPECIFIED;
+ }
+
+ 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))
{
- nat_elog_err (sm, "static_mapping_by_external key add failed");
- return VNET_API_ERROR_UNSPECIFIED;
+ 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);
}
-
- for (i = 0; i < vec_len (locals); i++)
+ 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)
{
- 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)
- {
- 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);
- }
+ 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);
}
+ }
- /* Assign workers */
- if (sm->num_workers > 1)
+ /* Assign workers */
+ if (sm->num_workers > 1)
+ {
+ clib_bitmap_foreach (i, bitmap)
{
- clib_bitmap_foreach (i, bitmap)
- {
- vec_add1(m->workers, i);
- }
+ vec_add1 (m->workers, i);
}
}
- else
+
+ return 0;
+}
+
+int
+nat44_ed_del_lb_static_mapping (ip4_address_t e_addr, u16 e_port,
+ nat_protocol_t proto, u32 flags)
+{
+ snat_main_t *sm = &snat_main;
+ snat_static_mapping_t *m;
+ clib_bihash_kv_8_8_t kv, value;
+ snat_address_t *a = 0;
+
+ nat44_lb_addr_port_t *local;
+ snat_main_per_thread_data_t *tsm;
+ snat_session_t *s;
+ int i;
+
+ if (!sm->enabled)
{
- if (!m)
- return VNET_API_ERROR_NO_SUCH_ENTRY;
+ return VNET_API_ERROR_UNSUPPORTED;
+ }
- if (!is_lb_static_mapping (m))
- return VNET_API_ERROR_INVALID_VALUE;
+ 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);
- /* Free external address port */
- if (!(sm->static_mapping_only || out2in_only))
+ if (!m)
+ return VNET_API_ERROR_NO_SUCH_ENTRY;
+
+ if (!is_sm_lb (m->flags))
+ return VNET_API_ERROR_INVALID_VALUE;
+
+ /* Free external address port */
+ if (!(sm->static_mapping_only || is_sm_out2in_only (flags)))
+ {
+ 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)
+ a = sm->addresses + i;
+ switch (proto)
{
- 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
+#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;
+ default : nat_elog_info (sm, "unknown protocol");
+ return VNET_API_ERROR_INVALID_VALUE_2;
}
+ break;
}
}
+ }
- 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))
- {
- nat_elog_err (sm, "static_mapping_by_external key del failed");
- return VNET_API_ERROR_UNSPECIFIED;
- }
-
- 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;
- }
- }
+ 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))
+ {
+ nat_elog_err (sm, "static_mapping_by_external key del failed");
+ return VNET_API_ERROR_UNSPECIFIED;
+ }
- if (sm->num_workers > 1)
+ pool_foreach (local, m->locals)
+ {
+ fib_table_unlock (local->fib_index, FIB_PROTOCOL_IP4, sm->fib_src_low);
+ if (!is_sm_out2in_only (flags))
+ {
+ 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))
{
- 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));
+ nat_elog_err (sm, "static_mapping_by_local key del failed");
+ return VNET_API_ERROR_UNSPECIFIED;
}
- 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 (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;
- 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);
+ 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 (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,
+ nat_protocol_t proto, u32 vrf_id,
+ u8 probability, u8 is_add)
{
snat_main_t *sm = &snat_main;
snat_static_mapping_t *m = 0;
uword *bitmap = 0;
int i;
+ if (!sm->enabled)
+ {
+ return VNET_API_ERROR_UNSUPPORTED;
+ }
+
init_nat_k (&kv, e_addr, e_port, 0, proto);
if (!clib_bihash_search_8_8 (&sm->static_mapping_by_external, &kv, &value))
m = pool_elt_at_index (sm->static_mappings, value.value);
if (!m)
return VNET_API_ERROR_NO_SUCH_ENTRY;
- if (!is_lb_static_mapping (m))
+ if (!is_sm_lb (m->flags))
return VNET_API_ERROR_INVALID_VALUE;
pool_foreach (local, m->locals)
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);
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))
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);
- }
- }
-
- 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);
- }
-
- vec_free (ses_to_be_removed);
- }
- }
-
-#define _(N, i, n, s) \
- vec_free (a->busy_##n##_ports_per_thread);
- foreach_nat_protocol
-#undef _
-
- if (twice_nat)
- {
- vec_del1 (sm->twice_nat_addresses, i);
- return 0;
- }
- else vec_del1 (sm->addresses, i);
-
- /* Delete external address from FIB */
- pool_foreach (interface, sm->interfaces)
- {
- if (nat_interface_is_inside (interface))
- continue;
-
- snat_add_del_addr_to_fib (&addr, 32, interface->sw_if_index, 0);
- break;
- }
- 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;
- }
-
- return 0;
-}
-
void
expire_per_vrf_sessions (u32 fib_index)
{
}
pool_foreach (m, sm->static_mappings)
{
- if (!(is_addr_only_static_mapping (m)) ||
+ if (!(is_sm_addr_only (m->flags)) ||
(m->local_addr.as_u32 == m->external_addr.as_u32))
{
continue;
pool_foreach (m, sm->static_mappings)
{
- if (!(is_addr_only_static_mapping (m)) ||
+ if (!(is_sm_addr_only (m->flags)) ||
(m->local_addr.as_u32 == m->external_addr.as_u32))
{
continue;
pool_foreach (m, sm->static_mappings)
{
- if (!((is_addr_only_static_mapping (m))) ||
+ if (!((is_sm_addr_only (m->flags))) ||
(m->local_addr.as_u32 == m->external_addr.as_u32))
{
continue;
pool_foreach (m, sm->static_mappings)
{
- if (!((is_addr_only_static_mapping (m))) ||
+ if (!((is_sm_addr_only (m->flags))) ||
(m->local_addr.as_u32 == m->external_addr.as_u32))
{
continue;
}
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;
}
}
-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_sm_addr_only_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 ()
}
/* 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_sm_addr_only_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 =
sm->forwarding_enabled = is_enable != 0;
- if (is_enable)
- return;
+ if (!sm->enabled || is_enable)
+ {
+ return;
+ }
vec_foreach (tsm, sm->per_thread_data)
{
}
}
-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;
- }
- }
-
- return VNET_API_ERROR_NO_SUCH_ENTRY;
-}
-
int
snat_static_mapping_match (vlib_main_t *vm, snat_main_t *sm,
ip4_address_t match_addr, u16 match_port,
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;
(&sm->static_mapping_by_external, &kv, &value))
{
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;
}
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_sm_addr_only_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;
+ clib_bihash_kv_8_8_t kv, value;
snat_static_map_resolve_t *rp;
+ snat_main_t *sm = &snat_main;
snat_static_mapping_t *m;
- clib_bihash_kv_8_8_t kv, value;
- int i, rv;
ip4_address_t l_addr;
+ int i, 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;
+ if (rp->addr_only && rp->sw_if_index == sw_if_index)
+ {
+ goto match;
+ }
}
-
return;
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;
+ {
+ m = 0;
+ }
else
- m = pool_elt_at_index (sm->static_mappings, value.value);
+ {
+ m = pool_elt_at_index (sm->static_mappings, value.value);
+ }
- if (!is_delete)
+ // Indetity mapping
+ if (rp->l_addr.as_u32 == 0)
{
- /* Don't trip over lease renewal, static config */
- if (m)
- return;
+ l_addr.as_u32 = address[0].as_u32;
}
else
{
- if (!m)
- return;
+ l_addr.as_u32 = rp->l_addr.as_u32;
}
- /* Indetity mapping? */
- if (rp->l_addr.as_u32 == 0)
- l_addr.as_u32 = address[0].as_u32;
+ if (is_delete)
+ {
+ if (m)
+ {
+ rv = nat44_ed_del_static_mapping (l_addr, address[0], rp->l_port,
+ rp->e_port, rp->proto, rp->vrf_id,
+ ~0, rp->flags);
+ }
+ }
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 (!m)
+ {
+ rv = nat44_ed_add_static_mapping (
+ l_addr, address[0], rp->l_port, rp->e_port, rp->proto, rp->vrf_id,
+ ~0, rp->flags, rp->pool_addr, rp->tag);
+ }
+ // else don't trip over lease renewal, static config
+ }
if (rv)
- nat_elog_notice_X1 (sm, "snat_add_static_mapping returned %d", "i4", rv);
+ {
+ nat_elog_notice_X1 (sm, "nat44_ed_del_static_mapping returned %d", "i4",
+ rv);
+ }
}
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_address_t *addresses = sm->addresses;
if (!sm->enabled)
- return;
+ {
+ return;
+ }
for (i = 0; i < vec_len (sm->auto_add_sw_if_indices); i++)
{
if (addresses[j].addr.as_u32 == address->as_u32)
return;
- (void) snat_add_address (sm, address, ~0, twice_nat);
+ (void) nat44_ed_add_address (address, ~0, twice_nat);
/* Scan static map resolution vector */
for (j = 0; j < vec_len (sm->to_resolve); j++)
{
/* On this interface? */
if (rp->sw_if_index == sw_if_index)
{
+ // TODO: remove if not needed (handled by function)
/* 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);
+ rv = nat44_ed_add_static_mapping (
+ 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_elog_notice_X1 (sm, "snat_add_static_mapping returned %d",
- "i4", rv);
+ {
+ nat_elog_notice_X1 (sm, "add_static_mapping returned %d",
+ "i4", rv);
+ }
}
}
return;
}
else
{
- (void) snat_del_address (sm, address[0], 1, twice_nat);
- return;
+ // remove all static mapping records
+ (void) nat44_ed_del_address (address[0], 1, twice_nat);
+ }
+}
+
+int
+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;
+ u32 *auto_add_sw_if_indices = twice_nat ?
+ sm->auto_add_sw_if_indices_twice_nat :
+ sm->auto_add_sw_if_indices;
+ int i;
+
+ for (i = 0; i < vec_len (auto_add_sw_if_indices); i++)
+ {
+ if (auto_add_sw_if_indices[i] == sw_if_index)
+ {
+ return VNET_API_ERROR_VALUE_EXIST;
+ }
+ }
+
+ // 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);
}
+
+ // 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) nat44_ed_add_address (first_int_addr, ~0, twice_nat);
+ }
+
+ return 0;
}
int
-snat_add_interface_address (snat_main_t * sm, u32 sw_if_index, int is_del,
- u8 twice_nat)
+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;
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;
+ u32 *auto_add_sw_if_indices;
+
+ if (!sm->enabled)
+ {
+ return VNET_API_ERROR_UNSUPPORTED;
+ }
- first_int_addr = ip4_interface_first_address (ip4_main, sw_if_index, 0 /* just want the address */
- );
+ auto_add_sw_if_indices = twice_nat ? sm->auto_add_sw_if_indices_twice_nat :
+ sm->auto_add_sw_if_indices;
for (i = 0; i < vec_len (auto_add_sw_if_indices); i++)
{
if (auto_add_sw_if_indices[i] == sw_if_index)
{
- if (is_del)
+ first_int_addr =
+ ip4_interface_first_address (ip4_main, sw_if_index, 0);
+ if (first_int_addr)
{
- /* if have address remove it */
- if (first_int_addr)
- (void) snat_del_address (sm, first_int_addr[0], 1, twice_nat);
- else
+ // remove all static mapping records
+ (void) nat44_ed_del_address (first_int_addr[0], 1, twice_nat);
+ }
+ else
+ {
+ for (j = 0; j < vec_len (sm->to_resolve); j++)
{
- for (j = 0; j < vec_len (sm->to_resolve); j++)
+ rp = sm->to_resolve + j;
+ if (rp->sw_if_index == sw_if_index)
{
- rp = sm->to_resolve + j;
- if (rp->sw_if_index == sw_if_index)
- vec_add1 (indices_to_delete, j);
+ vec_add1 (indices_to_delete, j);
}
- if (vec_len (indices_to_delete))
+ }
+ if (vec_len (indices_to_delete))
+ {
+ for (j = vec_len (indices_to_delete) - 1; j >= 0; j--)
{
- for (j = vec_len (indices_to_delete) - 1; j >= 0; j--)
- vec_del1 (sm->to_resolve, j);
- vec_free (indices_to_delete);
+ 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;
+ if (twice_nat)
+ {
+ vec_del1 (sm->auto_add_sw_if_indices_twice_nat, i);
+ }
+ else
+ {
+ vec_del1 (sm->auto_add_sw_if_indices, i);
+ }
return 0;
}
}
-
- if (is_del)
- return VNET_API_ERROR_NO_SUCH_ENTRY;
-
- /* 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);
-
- /* If the address is already bound - or static - add it now */
- if (first_int_addr)
- (void) snat_add_address (sm, first_int_addr, ~0, twice_nat);
-
- return 0;
+ return VNET_API_ERROR_NO_SUCH_ENTRY;
}
int
-nat44_del_ed_session (snat_main_t * sm, ip4_address_t * addr, u16 port,
- ip4_address_t * eh_addr, u16 eh_port, u8 proto,
+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 (
}
}
-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,
}
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 =
{
case NAT_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 */,
ip_csum_update (new_icmp_sum, old_udp_sum, udp->checksum,
udp_header_t, checksum);
new_icmp_sum = ip_csum_fold (new_icmp_sum);
- if (0xffff == new_icmp_sum)
- new_icmp_sum = 0;
icmp->checksum = new_icmp_sum;
break;
case NAT_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 */,
ip_csum_update (new_icmp_sum, old_tcp_sum, tcp->checksum,
tcp_header_t, checksum);
new_icmp_sum = ip_csum_fold (new_icmp_sum);
- if (0xffff == new_icmp_sum)
- new_icmp_sum = 0;
icmp->checksum = new_icmp_sum;
break;
case NAT_PROTOCOL_ICMP:
if (f->ops & NAT_FLOW_OP_ICMP_ID_REWRITE)
{
icmp46_header_t *inner_icmp = ip4_next_header (inner_ip);
+ 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)
}
static_always_inline 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, int is_i2o)
+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,
+ nat_protocol_t proto, int is_output_feature,
+ int is_i2o)
{
if (!is_output_feature && f->ops & NAT_FLOW_OP_TXFIB_REWRITE)
{
0 /* is_icmp_inner_ip4 */,
0 /* skip_saddr_rewrite */);
}
- return nat_6t_flow_icmp_translate (sm, b, ip, f);
+ 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 */,
}
nat_translation_error_e
-nat_6t_flow_buf_translate_i2o (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)
+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, nat_protocol_t proto,
+ int is_output_feature)
{
- return nat_6t_flow_buf_translate (sm, b, ip, f, proto, 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 (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)
+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, nat_protocol_t proto,
+ int is_output_feature)
{
- return nat_6t_flow_buf_translate (sm, b, ip, f, proto, is_output_feature,
+ return nat_6t_flow_buf_translate (vm, sm, b, ip, f, proto, is_output_feature,
0 /* is_i2o */);
}
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;
}
Code Review / vpp.git / blobdiff