NAT44_CLASSIFY_N_NEXT,
} nat44_classify_next_t;
+void
+nat_free_session_data (snat_main_t * sm, snat_session_t * s, u32 thread_index)
+{
+ snat_session_key_t key;
+ clib_bihash_kv_8_8_t kv;
+ nat_ed_ses_key_t ed_key;
+ clib_bihash_kv_16_8_t ed_kv;
+ int i;
+ snat_address_t *a;
+ snat_main_per_thread_data_t *tsm =
+ vec_elt_at_index (sm->per_thread_data, thread_index);
+
+ /* Endpoint dependent session lookup tables */
+ if (is_ed_session (s))
+ {
+ ed_key.l_addr = s->out2in.addr;
+ ed_key.r_addr = s->ext_host_addr;
+ ed_key.fib_index = s->out2in.fib_index;
+ if (snat_is_unk_proto_session (s))
+ {
+ ed_key.proto = s->in2out.port;
+ ed_key.r_port = 0;
+ ed_key.l_port = 0;
+ }
+ else
+ {
+ ed_key.proto = snat_proto_to_ip_proto (s->in2out.protocol);
+ ed_key.l_port = s->out2in.port;
+ ed_key.r_port = s->ext_host_port;
+ }
+ ed_kv.key[0] = ed_key.as_u64[0];
+ ed_kv.key[1] = ed_key.as_u64[1];
+ if (clib_bihash_add_del_16_8 (&sm->out2in_ed, &ed_kv, 0))
+ clib_warning ("out2in_ed key del failed");
+
+ ed_key.l_addr = s->in2out.addr;
+ ed_key.fib_index = s->in2out.fib_index;
+ if (!snat_is_unk_proto_session (s))
+ ed_key.l_port = s->in2out.port;
+ if (is_twice_nat_session (s))
+ {
+ ed_key.r_addr = s->ext_host_nat_addr;
+ ed_key.r_port = s->ext_host_nat_port;
+ }
+ ed_kv.key[0] = ed_key.as_u64[0];
+ ed_kv.key[1] = ed_key.as_u64[1];
+ if (clib_bihash_add_del_16_8 (&sm->in2out_ed, &ed_kv, 0))
+ clib_warning ("in2out_ed key del failed");
+ }
+
+ if (snat_is_unk_proto_session (s))
+ return;
+
+ /* log NAT event */
+ snat_ipfix_logging_nat44_ses_delete(s->in2out.addr.as_u32,
+ s->out2in.addr.as_u32,
+ s->in2out.protocol,
+ s->in2out.port,
+ s->out2in.port,
+ s->in2out.fib_index);
+
+ /* Twice NAT address and port for external host */
+ if (is_twice_nat_session (s))
+ {
+ for (i = 0; i < vec_len (sm->twice_nat_addresses); i++)
+ {
+ key.protocol = s->in2out.protocol;
+ key.port = s->ext_host_nat_port;
+ a = sm->twice_nat_addresses + i;
+ if (a->addr.as_u32 == s->ext_host_nat_addr.as_u32)
+ {
+ snat_free_outside_address_and_port (sm->twice_nat_addresses,
+ thread_index, &key, i);
+ break;
+ }
+ }
+ }
+
+ if (is_ed_session (s))
+ return;
+
+ /* Session lookup tables */
+ kv.key = s->in2out.as_u64;
+ if (clib_bihash_add_del_8_8 (&tsm->in2out, &kv, 0))
+ clib_warning ("in2out key del failed");
+ kv.key = s->out2in.as_u64;
+ if (clib_bihash_add_del_8_8 (&tsm->out2in, &kv, 0))
+ clib_warning ("out2in key del failed");
+
+ if (snat_is_session_static (s))
+ return;
+
+ if (s->outside_address_index != ~0)
+ snat_free_outside_address_and_port (sm->addresses, thread_index,
+ &s->out2in, s->outside_address_index);
+}
+
+snat_user_t *
+nat_user_get_or_create (snat_main_t *sm, ip4_address_t *addr, u32 fib_index,
+ u32 thread_index)
+{
+ snat_user_t *u = 0;
+ snat_user_key_t user_key;
+ clib_bihash_kv_8_8_t kv, value;
+ snat_main_per_thread_data_t *tsm = &sm->per_thread_data[thread_index];
+ dlist_elt_t * per_user_list_head_elt;
+
+ user_key.addr.as_u32 = addr->as_u32;
+ user_key.fib_index = fib_index;
+ kv.key = user_key.as_u64;
+
+ /* Ever heard of the "user" = src ip4 address before? */
+ if (clib_bihash_search_8_8 (&tsm->user_hash, &kv, &value))
+ {
+ /* no, make a new one */
+ pool_get (tsm->users, u);
+ memset (u, 0, sizeof (*u));
+ u->addr.as_u32 = addr->as_u32;
+ u->fib_index = fib_index;
+
+ pool_get (tsm->list_pool, per_user_list_head_elt);
+
+ u->sessions_per_user_list_head_index = per_user_list_head_elt -
+ tsm->list_pool;
+
+ clib_dlist_init (tsm->list_pool, u->sessions_per_user_list_head_index);
+
+ kv.value = u - tsm->users;
+
+ /* add user */
+ if (clib_bihash_add_del_8_8 (&tsm->user_hash, &kv, 1))
+ clib_warning ("user_hash keay add failed");
+ }
+ else
+ {
+ u = pool_elt_at_index (tsm->users, value.value);
+ }
+
+ return u;
+}
+
+snat_session_t *
+nat_session_alloc_or_recycle (snat_main_t *sm, snat_user_t *u, u32 thread_index)
+{
+ snat_session_t *s;
+ snat_main_per_thread_data_t *tsm = &sm->per_thread_data[thread_index];
+ u32 oldest_per_user_translation_list_index, session_index;
+ dlist_elt_t * oldest_per_user_translation_list_elt;
+ dlist_elt_t * per_user_translation_list_elt;
+
+ /* Over quota? Recycle the least recently used translation */
+ if ((u->nsessions + u->nstaticsessions) >= sm->max_translations_per_user)
+ {
+ oldest_per_user_translation_list_index =
+ clib_dlist_remove_head (tsm->list_pool,
+ u->sessions_per_user_list_head_index);
+
+ ASSERT (oldest_per_user_translation_list_index != ~0);
+
+ /* Add it back to the end of the LRU list */
+ clib_dlist_addtail (tsm->list_pool,
+ u->sessions_per_user_list_head_index,
+ oldest_per_user_translation_list_index);
+ /* Get the list element */
+ oldest_per_user_translation_list_elt =
+ pool_elt_at_index (tsm->list_pool,
+ oldest_per_user_translation_list_index);
+
+ /* Get the session index from the list element */
+ session_index = oldest_per_user_translation_list_elt->value;
+
+ /* Get the session */
+ s = pool_elt_at_index (tsm->sessions, session_index);
+ nat_free_session_data (sm, s, thread_index);
+ s->outside_address_index = ~0;
+ s->flags = 0;
+ s->total_bytes = 0;
+ s->total_pkts = 0;
+ }
+ else
+ {
+ pool_get (tsm->sessions, s);
+ memset (s, 0, sizeof (*s));
+ s->outside_address_index = ~0;
+
+ /* Create list elts */
+ pool_get (tsm->list_pool, per_user_translation_list_elt);
+ clib_dlist_init (tsm->list_pool,
+ per_user_translation_list_elt - tsm->list_pool);
+
+ per_user_translation_list_elt->value = s - tsm->sessions;
+ s->per_user_index = per_user_translation_list_elt - tsm->list_pool;
+ s->per_user_list_head_index = u->sessions_per_user_list_head_index;
+
+ clib_dlist_addtail (tsm->list_pool,
+ s->per_user_list_head_index,
+ per_user_translation_list_elt - tsm->list_pool);
+ }
+
+ return s;
+}
+
static inline uword
nat44_classify_node_fn_inline (vlib_main_t * vm,
vlib_node_runtime_t * node,
FIB_SOURCE_PLUGIN_HI);
}
-void snat_add_address (snat_main_t *sm, ip4_address_t *addr, u32 vrf_id)
+void snat_add_address (snat_main_t *sm, ip4_address_t *addr, u32 vrf_id,
+ u8 twice_nat)
{
snat_address_t * ap;
snat_interface_t *i;
vlib_thread_main_t *tm = vlib_get_thread_main ();
/* Check if address already exists */
- vec_foreach (ap, sm->addresses)
+ vec_foreach (ap, twice_nat ? sm->twice_nat_addresses : sm->addresses)
{
if (ap->addr.as_u32 == addr->as_u32)
return;
}
- vec_add2 (sm->addresses, ap, 1);
+ 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 =
foreach_snat_protocol
#undef _
+ if (twice_nat)
+ return;
+
/* Add external address to FIB */
pool_foreach (i, sm->interfaces,
({
* @param addr_only If 0 address port and pair mapping, otherwise address only.
* @param sw_if_index External port instead of specific IP address.
* @param is_add If 0 delete static mapping, otherwise add.
+ * @param twice_nat If 1 translate external host address and port.
*
* @returns
*/
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, snat_protocol_t proto, int is_add)
+ u32 sw_if_index, snat_protocol_t proto, int is_add,
+ u8 twice_nat)
{
snat_main_t * sm = &snat_main;
snat_static_mapping_t *m;
uword * p;
snat_interface_t *interface;
int i;
+ snat_main_per_thread_data_t *tsm;
/* If the external address is a specific interface address */
if (sw_if_index != ~0)
if (m)
return VNET_API_ERROR_VALUE_EXIST;
+ if (twice_nat && addr_only)
+ return VNET_API_ERROR_UNSUPPORTED;
+
/* Convert VRF id to FIB index */
if (vrf_id != ~0)
{
m->addr_only = addr_only;
m->vrf_id = vrf_id;
m->fib_index = fib_index;
+ m->twice_nat = twice_nat;
if (!addr_only)
{
m->local_port = l_port;
m->proto = proto;
}
+ if (sm->workers)
+ {
+ ip4_header_t ip = {
+ .src_address = m->local_addr,
+ };
+ m->worker_index = sm->worker_in2out_cb (&ip, m->fib_index);
+ tsm = vec_elt_at_index (sm->per_thread_data, m->worker_index);
+ }
+ else
+ tsm = vec_elt_at_index (sm->per_thread_data, sm->num_workers);
+
m_key.addr = m->local_addr;
m_key.port = m->local_port;
m_key.protocol = m->proto;
kv.key = m_key.as_u64;
kv.value = m - sm->static_mappings;
clib_bihash_add_del_8_8(&sm->static_mapping_by_local, &kv, 1);
+ if (twice_nat)
+ {
+ m_key.port = clib_host_to_net_u16 (l_port);
+ kv.key = m_key.as_u64;
+ kv.value = ~0ULL;
+ if (clib_bihash_add_del_8_8(&tsm->in2out, &kv, 1))
+ clib_warning ("in2out key add failed");
+ }
m_key.addr = m->external_addr;
m_key.port = m->external_port;
kv.key = m_key.as_u64;
kv.value = m - sm->static_mappings;
clib_bihash_add_del_8_8(&sm->static_mapping_by_external, &kv, 1);
-
- if (sm->workers)
+ if (twice_nat)
{
- ip4_header_t ip = {
- .src_address = m->local_addr,
- };
- m->worker_index = sm->worker_in2out_cb (&ip, m->fib_index);
+ m_key.port = clib_host_to_net_u16 (e_port);
+ kv.key = m_key.as_u64;
+ kv.value = ~0ULL;
+ if (clib_bihash_add_del_8_8(&tsm->out2in, &kv, 1))
+ clib_warning ("out2in key add failed");
}
+
}
else
{
}
}
+ if (sm->num_workers > 1)
+ tsm = vec_elt_at_index (sm->per_thread_data, m->worker_index);
+ else
+ tsm = vec_elt_at_index (sm->per_thread_data, sm->num_workers);
+
m_key.addr = m->local_addr;
m_key.port = m->local_port;
m_key.protocol = m->proto;
m_key.fib_index = m->fib_index;
kv.key = m_key.as_u64;
clib_bihash_add_del_8_8(&sm->static_mapping_by_local, &kv, 0);
+ if (twice_nat)
+ {
+ m_key.port = clib_host_to_net_u16 (m->local_port);
+ kv.key = m_key.as_u64;
+ kv.value = ~0ULL;
+ if (clib_bihash_add_del_8_8(&tsm->in2out, &kv, 0))
+ clib_warning ("in2out key del failed");
+ }
m_key.addr = m->external_addr;
m_key.port = m->external_port;
m_key.fib_index = sm->outside_fib_index;
kv.key = m_key.as_u64;
clib_bihash_add_del_8_8(&sm->static_mapping_by_external, &kv, 0);
+ if (twice_nat)
+ {
+ m_key.port = clib_host_to_net_u16 (m->external_port);
+ kv.key = m_key.as_u64;
+ kv.value = ~0ULL;
+ if (clib_bihash_add_del_8_8(&tsm->out2in, &kv, 0))
+ clib_warning ("in2out key del failed");
+ }
/* Delete session(s) for static mapping if exist */
if (!(sm->static_mapping_only) ||
snat_user_key_t u_key;
snat_user_t *u;
dlist_elt_t * head, * elt;
- u32 elt_index, head_index, del_elt_index;
+ u32 elt_index, head_index;
u32 ses_index;
u64 user_index;
snat_session_t * s;
- snat_main_per_thread_data_t *tsm;
u_key.addr = m->local_addr;
u_key.fib_index = m->fib_index;
kv.key = u_key.as_u64;
- if (sm->num_workers > 1)
- tsm = vec_elt_at_index (sm->per_thread_data, m->worker_index);
- else
- tsm = vec_elt_at_index (sm->per_thread_data, sm->num_workers);
if (!clib_bihash_search_8_8 (&tsm->user_hash, &kv, &value))
{
user_index = value.value;
while (ses_index != ~0)
{
s = pool_elt_at_index (tsm->sessions, ses_index);
- del_elt_index = elt_index;
- elt_index = elt->next;
- elt = pool_elt_at_index (tsm->list_pool, elt_index);
+ elt = pool_elt_at_index (tsm->list_pool, elt->next);
ses_index = elt->value;
if (!addr_only)
continue;
}
- if (snat_is_unk_proto_session (s))
- {
- clib_bihash_kv_16_8_t up_kv;
- nat_ed_ses_key_t up_key;
- up_key.l_addr = s->in2out.addr;
- up_key.r_addr = s->ext_host_addr;
- up_key.fib_index = s->in2out.fib_index;
- up_key.proto = s->in2out.port;
- up_key.rsvd = 0;
- up_key.l_port = 0;
- up_kv.key[0] = up_key.as_u64[0];
- up_kv.key[1] = up_key.as_u64[1];
- if (clib_bihash_add_del_16_8 (&sm->in2out_ed,
- &up_kv, 0))
- clib_warning ("in2out key del failed");
-
- up_key.l_addr = s->out2in.addr;
- up_key.fib_index = s->out2in.fib_index;
- up_kv.key[0] = up_key.as_u64[0];
- up_kv.key[1] = up_key.as_u64[1];
- if (clib_bihash_add_del_16_8 (&sm->out2in_ed,
- &up_kv, 0))
- clib_warning ("out2in key del failed");
-
- goto delete;
- }
- /* log NAT event */
- snat_ipfix_logging_nat44_ses_delete(s->in2out.addr.as_u32,
- s->out2in.addr.as_u32,
- s->in2out.protocol,
- s->in2out.port,
- s->out2in.port,
- s->in2out.fib_index);
-
- value.key = s->in2out.as_u64;
- if (clib_bihash_add_del_8_8 (&tsm->in2out, &value, 0))
- clib_warning ("in2out key del failed");
- value.key = s->out2in.as_u64;
- if (clib_bihash_add_del_8_8 (&tsm->out2in, &value, 0))
- clib_warning ("out2in key del failed");
-delete:
+ nat_free_session_data (sm, s, tsm - sm->per_thread_data);
+ clib_dlist_remove (tsm->list_pool, s->per_user_index);
+ pool_put_index (tsm->list_pool, s->per_user_index);
pool_put (tsm->sessions, s);
-
- clib_dlist_remove (tsm->list_pool, del_elt_index);
- pool_put_index (tsm->list_pool, del_elt_index);
u->nstaticsessions--;
if (!addr_only)
int nat44_add_del_lb_static_mapping (ip4_address_t e_addr, u16 e_port,
snat_protocol_t proto, u32 vrf_id,
- nat44_lb_addr_port_t *locals, u8 is_add)
+ nat44_lb_addr_port_t *locals, u8 is_add,
+ u8 twice_nat)
{
snat_main_t * sm = &snat_main;
snat_static_mapping_t *m;
snat_address_t *a = 0;
int i;
nat44_lb_addr_port_t *local;
- u32 worker_index = 0;
+ u32 worker_index = 0, elt_index, head_index, ses_index;
snat_main_per_thread_data_t *tsm;
+ snat_user_key_t u_key;
+ snat_user_t *u;
+ snat_session_t * s;
+ dlist_elt_t * head, * elt;
m_key.addr = e_addr;
m_key.port = e_port;
m->fib_index = fib_index;
m->external_port = e_port;
m->proto = proto;
+ m->twice_nat = twice_nat;
m_key.addr = m->external_addr;
m_key.port = m->external_port;
kv.value = ~0ULL;
if (clib_bihash_add_del_8_8(&tsm->out2in, &kv, 1))
{
- clib_warning ("static_mapping_by_local key add failed");
+ clib_warning ("out2in key add failed");
return VNET_API_ERROR_UNSPECIFIED;
}
clib_warning ("in2out key del failed");
return VNET_API_ERROR_UNSPECIFIED;
}
+ /* Delete sessions */
+ u_key.addr = local->addr;
+ u_key.fib_index = m->fib_index;
+ kv.key = u_key.as_u64;
+ if (!clib_bihash_search_8_8 (&tsm->user_hash, &kv, &value))
+ {
+ u = pool_elt_at_index (tsm->users, value.value);
+ if (u->nstaticsessions)
+ {
+ head_index = u->sessions_per_user_list_head_index;
+ head = pool_elt_at_index (tsm->list_pool, head_index);
+ elt_index = head->next;
+ elt = pool_elt_at_index (tsm->list_pool, elt_index);
+ ses_index = elt->value;
+ while (ses_index != ~0)
+ {
+ s = pool_elt_at_index (tsm->sessions, ses_index);
+ elt = pool_elt_at_index (tsm->list_pool, elt->next);
+ ses_index = elt->value;
+
+ if ((s->in2out.addr.as_u32 != local->addr.as_u32) &&
+ (clib_net_to_host_u16 (s->in2out.port) != local->port))
+ continue;
+
+ nat_free_session_data (sm, s, tsm - sm->per_thread_data);
+ clib_dlist_remove (tsm->list_pool, s->per_user_index);
+ pool_put_index (tsm->list_pool, s->per_user_index);
+ pool_put (tsm->sessions, s);
+ u->nstaticsessions--;
+ }
+ }
+ }
}
vec_free(m->locals);
return 0;
}
-int snat_del_address (snat_main_t *sm, ip4_address_t addr, u8 delete_sm)
+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;
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 (sm->addresses); i++)
+ for (i=0; i < vec_len (addresses); i++)
{
- if (sm->addresses[i].addr.as_u32 == addr.as_u32)
+ if (addresses[i].addr.as_u32 == addr.as_u32)
{
- a = sm->addresses + i;
+ a = addresses + i;
break;
}
}
(void) snat_add_static_mapping (m->local_addr, m->external_addr,
m->local_port, m->external_port,
m->vrf_id, m->addr_only, ~0,
- m->proto, 0);
+ m->proto, 0, m->twice_nat);
}));
}
else
pool_foreach (ses, tsm->sessions, ({
if (ses->out2in.addr.as_u32 == addr.as_u32)
{
- if (snat_is_unk_proto_session (ses))
- {
- clib_bihash_kv_16_8_t up_kv;
- nat_ed_ses_key_t up_key;
- up_key.l_addr = ses->in2out.addr;
- up_key.r_addr = ses->ext_host_addr;
- up_key.fib_index = ses->in2out.fib_index;
- up_key.proto = ses->in2out.port;
- up_key.rsvd = 0;
- up_key.l_port = 0;
- up_kv.key[0] = up_key.as_u64[0];
- up_kv.key[1] = up_key.as_u64[1];
- if (clib_bihash_add_del_16_8 (&sm->in2out_ed,
- &up_kv, 0))
- clib_warning ("in2out key del failed");
-
- up_key.l_addr = ses->out2in.addr;
- up_key.fib_index = ses->out2in.fib_index;
- up_kv.key[0] = up_key.as_u64[0];
- up_kv.key[1] = up_key.as_u64[1];
- if (clib_bihash_add_del_16_8 (&sm->out2in_ed,
- &up_kv, 0))
- clib_warning ("out2in key del failed");
- }
- else
- {
- /* log NAT event */
- snat_ipfix_logging_nat44_ses_delete(ses->in2out.addr.as_u32,
- ses->out2in.addr.as_u32,
- ses->in2out.protocol,
- ses->in2out.port,
- ses->out2in.port,
- ses->in2out.fib_index);
- kv.key = ses->in2out.as_u64;
- clib_bihash_add_del_8_8 (&tsm->in2out, &kv, 0);
- kv.key = ses->out2in.as_u64;
- clib_bihash_add_del_8_8 (&tsm->out2in, &kv, 0);
- }
- vec_add1 (ses_to_be_removed, ses - tsm->sessions);
+ ses->outside_address_index = ~0;
+ nat_free_session_data (sm, ses, tsm - sm->per_thread_data);
clib_dlist_remove (tsm->list_pool, ses->per_user_index);
+ pool_put_index (tsm->list_pool, ses->per_user_index);
+ vec_add1 (ses_to_be_removed, ses - tsm->sessions);
user_key.addr = ses->in2out.addr;
user_key.fib_index = ses->in2out.fib_index;
kv.key = user_key.as_u64;
}
}
- vec_del1 (sm->addresses, i);
+ 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,
* @param by_external If 0 match by local address otherwise match by external
* address.
* @param is_addr_only If matched mapping is address only
+ * @param twice_nat If matched mapping is twice NAT.
*
* @returns 0 if match found otherwise 1.
*/
snat_session_key_t match,
snat_session_key_t * mapping,
u8 by_external,
- u8 *is_addr_only)
+ u8 *is_addr_only,
+ u8 *twice_nat)
{
clib_bihash_kv_8_8_t kv, value;
snat_static_mapping_t *m;
if (PREDICT_FALSE(is_addr_only != 0))
*is_addr_only = m->addr_only;
+ if (PREDICT_FALSE(twice_nat != 0))
+ *twice_nat = m->twice_nat;
+
return 0;
}
int is_add = 1;
int rv = 0;
clib_error_t *error = 0;
+ u8 twice_nat = 0;
/* Get a line of input. */
if (!unformat_user (input, unformat_line_input, line_input))
;
else if (unformat (line_input, "%U", unformat_ip4_address, &start_addr))
end_addr = start_addr;
+ else if (unformat (line_input, "twice-nat"))
+ twice_nat = 1;
else if (unformat (line_input, "del"))
is_add = 0;
else
for (i = 0; i < count; i++)
{
if (is_add)
- snat_add_address (sm, &this_addr, vrf_id);
+ snat_add_address (sm, &this_addr, vrf_id, twice_nat);
else
- rv = snat_del_address (sm, this_addr, 0);
+ rv = snat_del_address (sm, this_addr, 0, twice_nat);
switch (rv)
{
VLIB_CLI_COMMAND (add_address_command, static) = {
.path = "nat44 add address",
.short_help = "nat44 add address <ip4-range-start> [- <ip4-range-end>] "
- "[tenant-vrf <vrf-id>] [del]",
+ "[tenant-vrf <vrf-id>] [twice-nat] [del]",
.function = add_address_command_fn,
};
int rv;
snat_protocol_t proto = ~0;
u8 proto_set = 0;
+ u8 twice_nat = 0;
/* Get a line of input. */
if (!unformat_user (input, unformat_line_input, line_input))
;
else if (unformat (line_input, "%U", unformat_snat_protocol, &proto))
proto_set = 1;
+ else if (unformat (line_input, "twice-nat"))
+ twice_nat = 1;
else if (unformat (line_input, "del"))
is_add = 0;
else
}
}
+ if (twice_nat && addr_only)
+ {
+ error = clib_error_return (0, "twice NAT only for 1:1 NAPT");
+ goto done;
+ }
+
if (!addr_only && !proto_set)
{
error = clib_error_return (0, "missing protocol");
}
rv = snat_add_static_mapping(l_addr, e_addr, (u16) l_port, (u16) e_port,
- vrf_id, addr_only, sw_if_index, proto, is_add);
+ vrf_id, addr_only, sw_if_index, proto, is_add,
+ twice_nat);
switch (rv)
{
.path = "nat44 add static mapping",
.function = add_static_mapping_command_fn,
.short_help =
- "nat44 add static mapping tcp|udp|icmp local <addr> [<port>] external <addr> [<port>] [vrf <table-id>] [del]",
+ "nat44 add static mapping tcp|udp|icmp local <addr> [<port>] "
+ "external <addr> [<port>] [vrf <table-id>] [twice-nat] [del]",
};
static clib_error_t *
}
rv = snat_add_static_mapping(addr, addr, (u16) port, (u16) port,
- vrf_id, addr_only, sw_if_index, proto, is_add);
+ vrf_id, addr_only, sw_if_index, proto, is_add,
+ 0);
switch (rv)
{
snat_protocol_t proto;
u8 proto_set = 0;
nat44_lb_addr_port_t *locals = 0, local;
+ u8 twice_nat = 0;
/* Get a line of input. */
if (!unformat_user (input, unformat_line_input, line_input))
else if (unformat (line_input, "protocol %U", unformat_snat_protocol,
&proto))
proto_set = 1;
+ else if (unformat (line_input, "twice-nat"))
+ twice_nat = 1;
else if (unformat (line_input, "del"))
is_add = 0;
else
}
rv = nat44_add_del_lb_static_mapping (e_addr, (u16) e_port, proto, vrf_id,
- locals, is_add);
+ locals, is_add, twice_nat);
switch (rv)
{
.path = "nat44 add load-balancing static mapping",
.function = add_lb_static_mapping_command_fn,
.short_help =
- "nat44 add load-balancing static mapping protocol tcp|udp external <addr>:<port> local <addr>:<port> probability <n> [vrf <table-id>] [del]",
+ "nat44 add load-balancing static mapping protocol tcp|udp "
+ "external <addr>:<port> local <addr>:<port> probability <n> [twice-nat] "
+ "[vrf <table-id>] [del]",
};
static clib_error_t *
key.r_addr = ip0->src_address;
key.fib_index = rx_fib_index0;
key.proto = ip0->protocol;
- key.rsvd = 0;
+ key.r_port = 0;
key.l_port = 0;
s_kv.key[0] = key.as_u64[0];
s_kv.key[1] = key.as_u64[1];
if (snat_is_unk_proto_session (sess))
{
s = format (s, " i2o %U proto %u fib %u\n",
- format_ip4_address, &sess->in2out.addr, sess->in2out.port,
+ format_ip4_address, &sess->in2out.addr,
+ clib_net_to_host_u16 (sess->in2out.port),
sess->in2out.fib_index);
s = format (s, " o2i %U proto %u fib %u\n",
- format_ip4_address, &sess->out2in.addr, sess->out2in.port,
+ format_ip4_address, &sess->out2in.addr,
+ clib_net_to_host_u16 (sess->out2in.port),
sess->out2in.fib_index);
}
else
s = format (s, " i2o %U\n", format_snat_key, &sess->in2out);
s = format (s, " o2i %U\n", format_snat_key, &sess->out2in);
}
- if (sess->ext_host_addr.as_u32)
- s = format (s, " external host %U\n",
- format_ip4_address, &sess->ext_host_addr);
+ if (is_twice_nat_session (sess))
+ {
+ s = format (s, " external host o2i %U:%d i2o %U:%d\n",
+ format_ip4_address, &sess->ext_host_addr,
+ clib_net_to_host_u16 (sess->ext_host_port),
+ format_ip4_address, &sess->ext_host_nat_addr,
+ clib_net_to_host_u16 (sess->ext_host_nat_port));
+ }
+ else
+ {
+ if (sess->ext_host_addr.as_u32)
+ s = format (s, " external host %U\n",
+ format_ip4_address, &sess->ext_host_addr);
+ }
s = format (s, " last heard %.2f\n", sess->last_heard);
s = format (s, " total pkts %d, total bytes %lld\n",
sess->total_pkts, sess->total_bytes);
s = format (s, " dynamic translation\n");
if (sess->flags & SNAT_SESSION_FLAG_LOAD_BALANCING)
s = format (s, " load-balancing\n");
+ if (is_twice_nat_session (sess))
+ s = format (s, " twice-nat\n");
return s;
}
nat44_lb_addr_port_t *local;
if (m->addr_only)
- s = format (s, "local %U external %U vrf %d",
+ s = format (s, "local %U external %U vrf %d %s",
format_ip4_address, &m->local_addr,
format_ip4_address, &m->external_addr,
- m->vrf_id);
+ m->vrf_id, m->twice_nat ? "twice-nat" : "");
else
{
if (vec_len (m->locals))
{
- s = format (s, "%U vrf %d external %U:%d",
+ s = format (s, "%U vrf %d external %U:%d %s",
format_snat_protocol, m->proto,
m->vrf_id,
- format_ip4_address, &m->external_addr, m->external_port);
+ format_ip4_address, &m->external_addr, m->external_port,
+ m->twice_nat ? "twice-nat" : "");
vec_foreach (local, m->locals)
s = format (s, "\n local %U:%d probability %d\%",
format_ip4_address, &local->addr, local->port,
local->probability);
}
else
- s = format (s, "%U local %U:%d external %U:%d vrf %d",
+ s = format (s, "%U local %U:%d external %U:%d vrf %d %s",
format_snat_protocol, m->proto,
format_ip4_address, &m->local_addr, m->local_port,
format_ip4_address, &m->external_addr, m->external_port,
- m->vrf_id);
+ m->vrf_id, m->twice_nat ? "twice-nat" : "");
}
return s;
}
}
}
+ if (vec_len (sm->auto_add_sw_if_indices_twice_nat))
+ {
+ vlib_cli_output (vm, "NAT44 twice-nat pool addresses interfaces:");
+ vec_foreach (sw_if_index, sm->auto_add_sw_if_indices_twice_nat)
+ {
+ vlib_cli_output (vm, "%U", format_vnet_sw_interface_name, vnm,
+ vnet_get_sw_interface (vnm, *sw_if_index));
+ }
+ }
+
+ vlib_cli_output (vm, "NAT44 pool addresses:");
vec_foreach (ap, sm->addresses)
{
vlib_cli_output (vm, "%U", format_ip4_address, &ap->addr);
#define _(N, i, n, s) \
vlib_cli_output (vm, " %d busy %s ports", ap->busy_##n##_ports, s);
foreach_snat_protocol
+#undef _
+ }
+
+ vlib_cli_output (vm, "NAT44 twice-nat pool addresses:");
+ vec_foreach (ap, sm->twice_nat_addresses)
+ {
+ vlib_cli_output (vm, "%U", format_ip4_address, &ap->addr);
+ if (ap->fib_index != ~0)
+ vlib_cli_output (vm, " tenant VRF: %u",
+ ip4_fib_get(ap->fib_index)->table_id);
+ else
+ vlib_cli_output (vm, " tenant VRF independent");
+#define _(N, i, n, s) \
+ vlib_cli_output (vm, " %d busy %s ports", ap->busy_##n##_ports, s);
+ foreach_snat_protocol
#undef _
}
}
}
vlib_cli_output (vm, "%d users, %d outside addresses, %d active sessions,"
- " %d static mappings",
+ " %d static mappings, %d twice-nat addresses",
users_num,
vec_len (sm->addresses),
sessions_num,
- pool_elts (sm->static_mappings));
+ pool_elts (sm->static_mappings),
+ vec_len (sm->twice_nat_addresses));
if (verbose > 0)
{
ip4_address_t l_addr;
int i, j;
int rv;
+ u8 twice_nat = 0;
+ snat_address_t *addresses = sm->addresses;
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;
+ }
+
+ for (i = 0; i < vec_len(sm->auto_add_sw_if_indices_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;
+ }
+
+ return;
+
+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)
+ return;
+
+ snat_add_address (sm, address, ~0, twice_nat);
+ /* Scan static map resolution vector */
+ for (j = 0; j < vec_len (sm->to_resolve); j++)
{
- if (!is_delete)
+ rp = sm->to_resolve + j;
+ /* On this interface? */
+ if (rp->sw_if_index == sw_if_index)
{
- /* Don't trip over lease renewal, static config */
- for (j = 0; j < vec_len(sm->addresses); j++)
- if (sm->addresses[j].addr.as_u32 == address->as_u32)
- return;
-
- snat_add_address (sm, address, ~0);
- /* Scan static map resolution vector */
- for (j = 0; j < vec_len (sm->to_resolve); j++)
- {
- rp = sm->to_resolve + j;
- /* 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,
- rp->is_add);
- if (rv)
- clib_warning ("snat_add_static_mapping returned %d",
- rv);
- vec_add1 (indices_to_delete, j);
- }
- }
- /* If we resolved any of the outstanding static mappings */
- if (vec_len(indices_to_delete))
- {
- /* Delete them */
- for (j = vec_len(indices_to_delete)-1; j >= 0; j--)
- vec_delete(sm->to_resolve, 1, j);
- vec_free(indices_to_delete);
- }
- return;
- }
- else
- {
- (void) snat_del_address(sm, address[0], 1);
- return;
+ /* Indetity mapping? */
+ if (rp->l_addr.as_u32 == 0)
+ l_addr.as_u32 = address[0].as_u32;
+ else
+ l_addr.as_u32 = rp->l_addr.as_u32;
+ /* Add the static mapping */
+ rv = snat_add_static_mapping (l_addr,
+ address[0],
+ rp->l_port,
+ rp->e_port,
+ rp->vrf_id,
+ rp->addr_only,
+ ~0 /* sw_if_index */,
+ rp->proto,
+ rp->is_add,
+ 0);
+ if (rv)
+ clib_warning ("snat_add_static_mapping returned %d",
+ rv);
+ vec_add1 (indices_to_delete, j);
}
}
+ /* If we resolved any of the outstanding static mappings */
+ if (vec_len(indices_to_delete))
+ {
+ /* Delete them */
+ for (j = vec_len(indices_to_delete)-1; j >= 0; j--)
+ vec_delete(sm->to_resolve, 1, j);
+ vec_free(indices_to_delete);
+ }
+ return;
+ }
+ else
+ {
+ (void) snat_del_address(sm, address[0], 1, twice_nat);
+ return;
}
}
-int snat_add_interface_address (snat_main_t *sm, u32 sw_if_index, int is_del)
+int snat_add_interface_address (snat_main_t *sm, u32 sw_if_index, int is_del,
+ u8 twice_nat)
{
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;
first_int_addr = ip4_interface_first_address (ip4_main, sw_if_index,
0 /* just want the address*/);
- for (i = 0; i < vec_len(sm->auto_add_sw_if_indices); i++)
+ for (i = 0; i < vec_len(auto_add_sw_if_indices); i++)
{
- if (sm->auto_add_sw_if_indices[i] == sw_if_index)
+ 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);
+ (void) snat_del_address (sm, first_int_addr[0], 1, twice_nat);
else
{
for (j = 0; j < vec_len (sm->to_resolve); j++)
vec_free(indices_to_delete);
}
}
- vec_del1(sm->auto_add_sw_if_indices, i);
+ 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_NO_SUCH_ENTRY;
/* add to the auto-address list */
- vec_add1(sm->auto_add_sw_if_indices, sw_if_index);
+ 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)
- snat_add_address (sm, first_int_addr, ~0);
+ snat_add_address (sm, first_int_addr, ~0, twice_nat);
return 0;
}
int rv;
int is_del = 0;
clib_error_t *error = 0;
+ u8 twice_nat = 0;
/* Get a line of input. */
if (!unformat_user (input, unformat_line_input, line_input))
if (unformat (line_input, "%U", unformat_vnet_sw_interface,
sm->vnet_main, &sw_if_index))
;
+ else if (unformat (line_input, "twice-nat"))
+ twice_nat = 1;
else if (unformat (line_input, "del"))
is_del = 1;
else
}
}
- rv = snat_add_interface_address (sm, sw_if_index, is_del);
+ rv = snat_add_interface_address (sm, sw_if_index, is_del, twice_nat);
switch (rv)
{
VLIB_CLI_COMMAND (snat_add_interface_address_command, static) = {
.path = "nat44 add interface address",
- .short_help = "nat44 add interface address <interface> [del]",
+ .short_help = "nat44 add interface address <interface> [twice-nat] [del]",
.function = snat_add_interface_address_command_fn,
};
Code Review / vpp.git / blobdiff