#include <vnet/ip/ip4.h>
#include <vnet/plugin/plugin.h>
#include <nat/nat.h>
+#include <nat/nat_dpo.h>
#include <nat/nat_ipfix_logging.h>
#include <nat/nat_det.h>
#include <nat/nat64.h>
+#include <nat/dslite.h>
+#include <nat/nat_reass.h>
#include <vnet/fib/fib_table.h>
#include <vnet/fib/ip4_fib.h>
.node_name = "nat44-out2in",
.runs_before = VNET_FEATURES ("ip4-lookup"),
};
+VNET_FEATURE_INIT (ip4_nat_classify, static) = {
+ .arc_name = "ip4-unicast",
+ .node_name = "nat44-classify",
+ .runs_before = VNET_FEATURES ("ip4-lookup"),
+};
VNET_FEATURE_INIT (ip4_snat_det_in2out, static) = {
.arc_name = "ip4-unicast",
.node_name = "nat44-det-in2out",
.node_name = "nat44-det-out2in",
.runs_before = VNET_FEATURES ("ip4-lookup"),
};
+VNET_FEATURE_INIT (ip4_nat_det_classify, static) = {
+ .arc_name = "ip4-unicast",
+ .node_name = "nat44-det-classify",
+ .runs_before = VNET_FEATURES ("ip4-lookup"),
+};
VNET_FEATURE_INIT (ip4_snat_in2out_worker_handoff, static) = {
.arc_name = "ip4-unicast",
.node_name = "nat44-in2out-worker-handoff",
.node_name = "nat44-out2in-worker-handoff",
.runs_before = VNET_FEATURES ("ip4-lookup"),
};
+VNET_FEATURE_INIT (ip4_nat_handoff_classify, static) = {
+ .arc_name = "ip4-unicast",
+ .node_name = "nat44-handoff-classify",
+ .runs_before = VNET_FEATURES ("ip4-lookup"),
+};
VNET_FEATURE_INIT (ip4_snat_in2out_fast, static) = {
.arc_name = "ip4-unicast",
.node_name = "nat44-in2out-fast",
.runs_before = VNET_FEATURES ("interface-output"),
};
+/* Hook up ip4-local features */
+VNET_FEATURE_INIT (ip4_nat_hairpinning, static) =
+{
+ .arc_name = "ip4-local",
+ .node_name = "nat44-hairpinning",
+ .runs_before = VNET_FEATURES("ip4-local-end-of-arc"),
+};
+
/* *INDENT-OFF* */
VLIB_PLUGIN_REGISTER () = {
};
/* *INDENT-ON* */
+vlib_node_registration_t nat44_classify_node;
+vlib_node_registration_t nat44_det_classify_node;
+vlib_node_registration_t nat44_handoff_classify_node;
+
+typedef enum {
+ NAT44_CLASSIFY_NEXT_IN2OUT,
+ NAT44_CLASSIFY_NEXT_OUT2IN,
+ 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,
+ vlib_frame_t * frame)
+{
+ u32 n_left_from, * from, * to_next;
+ nat44_classify_next_t next_index;
+ snat_main_t *sm = &snat_main;
+
+ from = vlib_frame_vector_args (frame);
+ n_left_from = frame->n_vectors;
+ next_index = node->cached_next_index;
+
+ while (n_left_from > 0)
+ {
+ u32 n_left_to_next;
+
+ vlib_get_next_frame (vm, node, next_index,
+ to_next, n_left_to_next);
+
+ while (n_left_from > 0 && n_left_to_next > 0)
+ {
+ u32 bi0;
+ vlib_buffer_t *b0;
+ u32 next0 = NAT44_CLASSIFY_NEXT_IN2OUT;
+ ip4_header_t *ip0;
+ snat_address_t *ap;
+ snat_session_key_t m_key0;
+ clib_bihash_kv_8_8_t kv0, value0;
+
+ /* speculatively enqueue b0 to the current next frame */
+ bi0 = from[0];
+ to_next[0] = bi0;
+ from += 1;
+ to_next += 1;
+ n_left_from -= 1;
+ n_left_to_next -= 1;
+
+ b0 = vlib_get_buffer (vm, bi0);
+ ip0 = vlib_buffer_get_current (b0);
+
+ vec_foreach (ap, sm->addresses)
+ {
+ if (ip0->dst_address.as_u32 == ap->addr.as_u32)
+ {
+ next0 = NAT44_CLASSIFY_NEXT_OUT2IN;
+ break;
+ }
+ }
+
+ if (PREDICT_FALSE (pool_elts (sm->static_mappings)))
+ {
+ m_key0.addr = ip0->dst_address;
+ m_key0.port = 0;
+ m_key0.protocol = 0;
+ m_key0.fib_index = sm->outside_fib_index;
+ kv0.key = m_key0.as_u64;
+ if (!clib_bihash_search_8_8 (&sm->static_mapping_by_external, &kv0, &value0))
+ {
+ next0 = NAT44_CLASSIFY_NEXT_OUT2IN;
+ }
+ }
+ /* verify speculative enqueue, maybe switch current next frame */
+ vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
+ to_next, n_left_to_next,
+ bi0, next0);
+ }
+
+ vlib_put_next_frame (vm, node, next_index, n_left_to_next);
+ }
+
+ return frame->n_vectors;
+}
+
+static uword
+nat44_classify_node_fn (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * frame)
+{
+ return nat44_classify_node_fn_inline (vm, node, frame);
+};
+
+VLIB_REGISTER_NODE (nat44_classify_node) = {
+ .function = nat44_classify_node_fn,
+ .name = "nat44-classify",
+ .vector_size = sizeof (u32),
+ .type = VLIB_NODE_TYPE_INTERNAL,
+ .n_next_nodes = NAT44_CLASSIFY_N_NEXT,
+ .next_nodes = {
+ [NAT44_CLASSIFY_NEXT_IN2OUT] = "nat44-in2out",
+ [NAT44_CLASSIFY_NEXT_OUT2IN] = "nat44-out2in",
+ },
+};
+
+VLIB_NODE_FUNCTION_MULTIARCH (nat44_classify_node,
+ nat44_classify_node_fn);
+
+static uword
+nat44_det_classify_node_fn (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * frame)
+{
+ return nat44_classify_node_fn_inline (vm, node, frame);
+};
+
+VLIB_REGISTER_NODE (nat44_det_classify_node) = {
+ .function = nat44_det_classify_node_fn,
+ .name = "nat44-det-classify",
+ .vector_size = sizeof (u32),
+ .type = VLIB_NODE_TYPE_INTERNAL,
+ .n_next_nodes = NAT44_CLASSIFY_N_NEXT,
+ .next_nodes = {
+ [NAT44_CLASSIFY_NEXT_IN2OUT] = "nat44-det-in2out",
+ [NAT44_CLASSIFY_NEXT_OUT2IN] = "nat44-det-out2in",
+ },
+};
+
+VLIB_NODE_FUNCTION_MULTIARCH (nat44_det_classify_node,
+ nat44_det_classify_node_fn);
+
+static uword
+nat44_handoff_classify_node_fn (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * frame)
+{
+ return nat44_classify_node_fn_inline (vm, node, frame);
+};
+
+VLIB_REGISTER_NODE (nat44_handoff_classify_node) = {
+ .function = nat44_handoff_classify_node_fn,
+ .name = "nat44-handoff-classify",
+ .vector_size = sizeof (u32),
+ .type = VLIB_NODE_TYPE_INTERNAL,
+ .n_next_nodes = NAT44_CLASSIFY_N_NEXT,
+ .next_nodes = {
+ [NAT44_CLASSIFY_NEXT_IN2OUT] = "nat44-in2out-worker-handoff",
+ [NAT44_CLASSIFY_NEXT_OUT2IN] = "nat44-out2in-worker-handoff",
+ },
+};
+
+VLIB_NODE_FUNCTION_MULTIARCH (nat44_handoff_classify_node,
+ nat44_handoff_classify_node_fn);
+
/**
* @brief Add/del NAT address to FIB.
*
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;
-
- if (vrf_id != ~0)
- sm->vrf_mode = 1;
+ 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 =
- fib_table_find_or_create_and_lock (FIB_PROTOCOL_IP4, vrf_id);
+ fib_table_find_or_create_and_lock (FIB_PROTOCOL_IP4, vrf_id,
+ FIB_SOURCE_PLUGIN_HI);
else
ap->fib_index = ~0;
#define _(N, i, n, s) \
- clib_bitmap_alloc (ap->busy_##n##_port_bitmap, 65535);
+ clib_bitmap_alloc (ap->busy_##n##_port_bitmap, 65535); \
+ ap->busy_##n##_ports = 0; \
+ vec_validate_init_empty (ap->busy_##n##_ports_per_thread, tm->n_vlib_mains - 1, 0);
foreach_snat_protocol
#undef _
+ if (twice_nat)
+ return;
+
/* Add external address to FIB */
pool_foreach (i, sm->interfaces,
({
- if (i->is_inside)
+ if (nat_interface_is_inside(i) || sm->out2in_dpo)
continue;
snat_add_del_addr_to_fib(addr, 32, i->sw_if_index, 1);
}));
pool_foreach (i, sm->output_feature_interfaces,
({
- if (i->is_inside)
+ if (nat_interface_is_inside(i) || sm->out2in_dpo)
continue;
snat_add_del_addr_to_fib(addr, 32, i->sw_if_index, 1);
* @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)
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;
+ }
}
m_key.addr = e_addr;
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)
{
return VNET_API_ERROR_INVALID_VALUE; \
clib_bitmap_set_no_check (a->busy_##n##_port_bitmap, e_port, 1); \
if (e_port > 1024) \
- a->busy_##n##_ports++; \
+ { \
+ a->busy_##n##_ports++; \
+ a->busy_##n##_ports_per_thread[(e_port - 1024) / sm->port_per_thread]++; \
+ } \
break;
foreach_snat_protocol
#undef _
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);
-
- /* Assign worker */
- if (sm->workers)
+ if (twice_nat)
{
- snat_user_key_t w_key0;
- snat_worker_key_t w_key1;
-
- w_key0.addr = m->local_addr;
- w_key0.fib_index = m->fib_index;
- kv.key = w_key0.as_u64;
-
- if (clib_bihash_search_8_8 (&sm->worker_by_in, &kv, &value))
- {
- kv.value = sm->first_worker_index +
- sm->workers[sm->next_worker++ % vec_len (sm->workers)];
-
- clib_bihash_add_del_8_8 (&sm->worker_by_in, &kv, 1);
- }
- else
- {
- kv.value = value.value;
- }
-
- w_key1.addr = m->external_addr;
- w_key1.port = clib_host_to_net_u16 (m->external_port);
- w_key1.fib_index = sm->outside_fib_index;
- kv.key = w_key1.as_u64;
- clib_bihash_add_del_8_8 (&sm->worker_by_out, &kv, 1);
+ 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
{
case SNAT_PROTOCOL_##N: \
clib_bitmap_set_no_check (a->busy_##n##_port_bitmap, e_port, 0); \
if (e_port > 1024) \
- a->busy_##n##_ports--; \
+ { \
+ a->busy_##n##_ports--; \
+ a->busy_##n##_ports_per_thread[(e_port - 1024) / sm->port_per_thread]--; \
+ } \
break;
foreach_snat_protocol
#undef _
}
}
+ 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 (!clib_bihash_search_8_8 (&sm->user_hash, &kv, &value))
+ if (!clib_bihash_search_8_8 (&tsm->user_hash, &kv, &value))
{
user_index = value.value;
- if (!clib_bihash_search_8_8 (&sm->worker_by_in, &kv, &value))
- tsm = vec_elt_at_index (sm->per_thread_data, value.value);
- else
- tsm = vec_elt_at_index (sm->per_thread_data, sm->num_workers);
u = pool_elt_at_index (tsm->users, user_index);
if (u->nstaticsessions)
{
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;
- snat_unk_proto_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.rsvd[1] = up_key.rsvd[2] = 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_unk_proto,
- &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_unk_proto,
- &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 (&sm->in2out, &value, 0))
- clib_warning ("in2out key del failed");
- value.key = s->out2in.as_u64;
- if (clib_bihash_add_del_8_8 (&sm->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)
if (addr_only)
{
pool_put (tsm->users, u);
- clib_bihash_add_del_8_8 (&sm->user_hash, &kv, 0);
+ clib_bihash_add_del_8_8 (&tsm->user_hash, &kv, 0);
}
}
}
pool_put (sm->static_mappings, m);
}
- if (!addr_only)
+ if (!addr_only || (l_addr.as_u32 == e_addr.as_u32))
return 0;
/* Add/delete external address to FIB */
pool_foreach (interface, sm->interfaces,
({
- if (interface->is_inside)
+ if (nat_interface_is_inside(interface) || sm->out2in_dpo)
continue;
snat_add_del_addr_to_fib(&e_addr, 32, interface->sw_if_index, is_add);
}));
pool_foreach (interface, sm->output_feature_interfaces,
({
- if (interface->is_inside)
+ if (nat_interface_is_inside(interface) || sm->out2in_dpo)
continue;
snat_add_del_addr_to_fib(&e_addr, 32, interface->sw_if_index, is_add);
return 0;
}
-int snat_del_address (snat_main_t *sm, ip4_address_t addr, u8 delete_sm)
+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,
+ u8 twice_nat)
+{
+ snat_main_t * sm = &snat_main;
+ snat_static_mapping_t *m;
+ snat_session_key_t m_key;
+ clib_bihash_kv_8_8_t kv, value;
+ u32 fib_index;
+ snat_address_t *a = 0;
+ int i;
+ nat44_lb_addr_port_t *local;
+ 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_key.protocol = proto;
+ m_key.fib_index = sm->outside_fib_index;
+ kv.key = m_key.as_u64;
+ 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 (vec_len (locals) < 2)
+ return VNET_API_ERROR_INVALID_VALUE;
+
+ fib_index = fib_table_find_or_create_and_lock (FIB_PROTOCOL_IP4,
+ vrf_id,
+ FIB_SOURCE_PLUGIN_HI);
+
+ /* Find external address in allocated addresses and reserve port for
+ address and port pair mapping when dynamic translations enabled */
+ if (!sm->static_mapping_only)
+ {
+ 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 SNAT_PROTOCOL_##N: \
+ if (clib_bitmap_get_no_check (a->busy_##n##_port_bitmap, e_port)) \
+ return VNET_API_ERROR_INVALID_VALUE; \
+ clib_bitmap_set_no_check (a->busy_##n##_port_bitmap, e_port, 1); \
+ if (e_port > 1024) \
+ { \
+ a->busy_##n##_ports++; \
+ a->busy_##n##_ports_per_thread[(e_port - 1024) / sm->port_per_thread]++; \
+ } \
+ break;
+ foreach_snat_protocol
+#undef _
+ default:
+ clib_warning("unknown_protocol");
+ return VNET_API_ERROR_INVALID_VALUE_2;
+ }
+ break;
+ }
+ }
+ /* External address must be allocated */
+ if (!a)
+ return VNET_API_ERROR_NO_SUCH_ENTRY;
+ }
+
+ pool_get (sm->static_mappings, m);
+ memset (m, 0, sizeof (*m));
+ m->external_addr = e_addr;
+ m->addr_only = 0;
+ m->vrf_id = vrf_id;
+ 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;
+ m_key.protocol = m->proto;
+ m_key.fib_index = sm->outside_fib_index;
+ kv.key = m_key.as_u64;
+ kv.value = m - sm->static_mappings;
+ if (clib_bihash_add_del_8_8(&sm->static_mapping_by_external, &kv, 1))
+ {
+ clib_warning ("static_mapping_by_external key add failed");
+ return VNET_API_ERROR_UNSPECIFIED;
+ }
+
+ /* Assign worker */
+ if (sm->workers)
+ {
+ worker_index = sm->first_worker_index +
+ sm->workers[sm->next_worker++ % vec_len (sm->workers)];
+ tsm = vec_elt_at_index (sm->per_thread_data, worker_index);
+ m->worker_index = worker_index;
+ }
+ else
+ tsm = vec_elt_at_index (sm->per_thread_data, sm->num_workers);
+
+ 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, 1))
+ {
+ clib_warning ("out2in key add failed");
+ return VNET_API_ERROR_UNSPECIFIED;
+ }
+
+ m_key.fib_index = m->fib_index;
+ for (i = 0; i < vec_len (locals); i++)
+ {
+ m_key.addr = locals[i].addr;
+ m_key.port = locals[i].port;
+ 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);
+ locals[i].prefix = (i == 0) ? locals[i].probability :\
+ (locals[i - 1].prefix + locals[i].probability);
+ vec_add1 (m->locals, locals[i]);
+
+ m_key.port = clib_host_to_net_u16 (locals[i].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");
+ return VNET_API_ERROR_UNSPECIFIED;
+ }
+ }
+ }
+ else
+ {
+ if (!m)
+ return VNET_API_ERROR_NO_SUCH_ENTRY;
+
+ fib_table_unlock (m->fib_index, FIB_PROTOCOL_IP4, FIB_SOURCE_PLUGIN_HI);
+
+ /* Free external address port */
+ if (!sm->static_mapping_only)
+ {
+ for (i = 0; i < vec_len (sm->addresses); i++)
+ {
+ if (sm->addresses[i].addr.as_u32 == e_addr.as_u32)
+ {
+ a = sm->addresses + i;
+ switch (proto)
+ {
+#define _(N, j, n, s) \
+ case SNAT_PROTOCOL_##N: \
+ clib_bitmap_set_no_check (a->busy_##n##_port_bitmap, e_port, 0); \
+ if (e_port > 1024) \
+ { \
+ a->busy_##n##_ports--; \
+ a->busy_##n##_ports_per_thread[(e_port - 1024) / sm->port_per_thread]--; \
+ } \
+ break;
+ foreach_snat_protocol
+#undef _
+ default:
+ clib_warning("unknown_protocol");
+ return VNET_API_ERROR_INVALID_VALUE_2;
+ }
+ break;
+ }
+ }
+ }
+
+ tsm = vec_elt_at_index (sm->per_thread_data, m->worker_index);
+ m_key.addr = m->external_addr;
+ m_key.port = m->external_port;
+ m_key.protocol = m->proto;
+ m_key.fib_index = sm->outside_fib_index;
+ kv.key = m_key.as_u64;
+ if (clib_bihash_add_del_8_8(&sm->static_mapping_by_external, &kv, 0))
+ {
+ clib_warning ("static_mapping_by_external key del failed");
+ return VNET_API_ERROR_UNSPECIFIED;
+ }
+
+ m_key.port = clib_host_to_net_u16 (m->external_port);
+ kv.key = m_key.as_u64;
+ if (clib_bihash_add_del_8_8(&tsm->out2in, &kv, 0))
+ {
+ clib_warning ("outi2in key del failed");
+ return VNET_API_ERROR_UNSPECIFIED;
+ }
+
+ vec_foreach (local, m->locals)
+ {
+ m_key.addr = local->addr;
+ m_key.port = local->port;
+ m_key.fib_index = m->fib_index;
+ kv.key = m_key.as_u64;
+ if (clib_bihash_add_del_8_8(&sm->static_mapping_by_local, &kv, 0))
+ {
+ clib_warning ("static_mapping_by_local key del failed");
+ return VNET_API_ERROR_UNSPECIFIED;
+ }
+
+ m_key.port = clib_host_to_net_u16 (local->port);
+ kv.key = m_key.as_u64;
+ if (clib_bihash_add_del_8_8(&tsm->in2out, &kv, 0))
+ {
+ 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);
+
+ pool_put (sm->static_mappings, m);
+ }
+
+ 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;
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
}
if (a->fib_index != ~0)
- fib_table_unlock(a->fib_index, FIB_PROTOCOL_IP4);
+ fib_table_unlock(a->fib_index, FIB_PROTOCOL_IP4,
+ FIB_SOURCE_PLUGIN_HI);
/* 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)
- {
- if (snat_is_unk_proto_session (ses))
- {
- clib_bihash_kv_16_8_t up_kv;
- snat_unk_proto_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.rsvd[1] = up_key.rsvd[2] = 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_unk_proto,
- &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_unk_proto,
- &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 (&sm->in2out, &kv, 0);
- kv.key = ses->out2in.as_u64;
- clib_bihash_add_del_8_8 (&sm->out2in, &kv, 0);
- }
- vec_add1 (ses_to_be_removed, ses - tsm->sessions);
+ if (ses->out2in.addr.as_u32 == addr.as_u32)
+ {
+ 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;
- if (!clib_bihash_search_8_8 (&sm->user_hash, &kv, &value))
+ if (!clib_bihash_search_8_8 (&tsm->user_hash, &kv, &value))
{
u = pool_elt_at_index (tsm->users, value.value);
u->nsessions--;
}
}
- 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,
({
- if (interface->is_inside)
+ if (nat_interface_is_inside(interface) || sm->out2in_dpo)
continue;
snat_add_del_addr_to_fib(&addr, 32, interface->sw_if_index, 0);
}));
pool_foreach (interface, sm->output_feature_interfaces,
({
- if (interface->is_inside)
+ if (nat_interface_is_inside(interface) || sm->out2in_dpo)
continue;
snat_add_del_addr_to_fib(&addr, 32, interface->sw_if_index, 0);
{
snat_main_t *sm = &snat_main;
snat_interface_t *i;
- const char * feature_name;
+ const char * feature_name, *del_feature_name;
snat_address_t * ap;
snat_static_mapping_t * m;
snat_det_map_t * dm;
+ if (sm->out2in_dpo && !is_inside)
+ return VNET_API_ERROR_UNSUPPORTED;
+
if (sm->static_mapping_only && !(sm->static_mapping_connection_tracking))
feature_name = is_inside ? "nat44-in2out-fast" : "nat44-out2in-fast";
else
feature_name = is_inside ? "nat44-in2out" : "nat44-out2in";
}
- vnet_feature_enable_disable ("ip4-unicast", feature_name, sw_if_index,
- !is_del, 0, 0);
-
if (sm->fq_in2out_index == ~0 && !sm->deterministic && sm->num_workers > 1)
sm->fq_in2out_index = vlib_frame_queue_main_init (sm->in2out_node_index, 0);
if (i->sw_if_index == sw_if_index)
{
if (is_del)
- pool_put (sm->interfaces, i);
+ {
+ 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 && !sm->deterministic)
+ del_feature_name = "nat44-handoff-classify";
+ else if (sm->deterministic)
+ del_feature_name = "nat44-det-classify";
+ else
+ del_feature_name = "nat44-classify";
+
+ 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
+ {
+ vnet_feature_enable_disable ("ip4-unicast", feature_name,
+ sw_if_index, 0, 0, 0);
+ pool_put (sm->interfaces, i);
+ }
+ }
else
- return VNET_API_ERROR_VALUE_EXIST;
+ {
+ if ((nat_interface_is_inside(i) && is_inside) ||
+ (nat_interface_is_outside(i) && !is_inside))
+ return 0;
+
+ if (sm->num_workers > 1 && !sm->deterministic)
+ {
+ del_feature_name = !is_inside ? "nat44-in2out-worker-handoff" :
+ "nat44-out2in-worker-handoff";
+ feature_name = "nat44-handoff-classify";
+ }
+ else if (sm->deterministic)
+ {
+ del_feature_name = !is_inside ? "nat44-det-in2out" :
+ "nat44-det-out2in";
+ feature_name = "nat44-det-classify";
+ }
+ else
+ {
+ del_feature_name = !is_inside ? "nat44-in2out" : "nat44-out2in";
+ feature_name = "nat44-classify";
+ }
+
+ 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;
+ }
goto fib;
}
pool_get (sm->interfaces, i);
i->sw_if_index = sw_if_index;
- i->is_inside = is_inside;
+ i->flags = 0;
+ vnet_feature_enable_disable ("ip4-unicast", feature_name, sw_if_index, 1, 0, 0);
+
+set_flags:
+ 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;
+ if (is_inside && !sm->out2in_dpo)
+ {
+ vnet_feature_enable_disable ("ip4-local", "nat44-hairpinning",
+ sw_if_index, !is_del, 0, 0);
+ return 0;
+ }
vec_foreach (ap, sm->addresses)
snat_add_del_addr_to_fib(&ap->addr, 32, sw_if_index, !is_del);
pool_foreach (m, sm->static_mappings,
({
- if (!(m->addr_only))
+ if (!(m->addr_only) || (m->local_addr.as_u32 == m->external_addr.as_u32))
continue;
snat_add_del_addr_to_fib(&m->external_addr, 32, sw_if_index, !is_del);
pool_get (sm->output_feature_interfaces, i);
i->sw_if_index = sw_if_index;
- i->is_inside = is_inside;
+ i->flags = 0;
+ 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:
clib_bitmap_foreach (i, bitmap,
({
vec_add1(sm->workers, i);
- sm->per_thread_data[i].snat_thread_index = j;
+ sm->per_thread_data[sm->first_worker_index + i].snat_thread_index = j;
j++;
}));
u32 if_address_index,
u32 is_delete);
+static int
+nat_alloc_addr_and_port_default (snat_address_t * addresses,
+ u32 fib_index,
+ u32 thread_index,
+ snat_session_key_t * k,
+ u32 * address_indexp,
+ u16 port_per_thread,
+ u32 snat_thread_index);
+
static clib_error_t * snat_init (vlib_main_t * vm)
{
snat_main_t * sm = &snat_main;
sm->tcp_established_timeout = SNAT_TCP_ESTABLISHED_TIMEOUT;
sm->tcp_transitory_timeout = SNAT_TCP_TRANSITORY_TIMEOUT;
sm->icmp_timeout = SNAT_ICMP_TIMEOUT;
+ sm->alloc_addr_and_port = nat_alloc_addr_and_port_default;
+ sm->forwarding_enabled = 0;
p = hash_get_mem (tm->thread_registrations_by_name, "workers");
if (p)
vec_add1 (im->add_del_interface_address_callbacks, cb4);
+ nat_dpo_module_init ();
+
/* Init IPFIX logging */
snat_ipfix_logging_init(vm);
+ /* Init NAT64 */
error = nat64_init(vm);
+ if (error)
+ return error;
- return error;
+ dslite_init(vm);
+
+ /* Init virtual fragmenentation reassembly */
+ return nat_reass_init(vm);
}
VLIB_INIT_FUNCTION (snat_init);
-void snat_free_outside_address_and_port (snat_main_t * sm,
+void snat_free_outside_address_and_port (snat_address_t * addresses,
+ u32 thread_index,
snat_session_key_t * k,
u32 address_index)
{
snat_address_t *a;
u16 port_host_byte_order = clib_net_to_host_u16 (k->port);
- ASSERT (address_index < vec_len (sm->addresses));
+ ASSERT (address_index < vec_len (addresses));
- a = sm->addresses + address_index;
+ a = addresses + address_index;
switch (k->protocol)
{
clib_bitmap_set_no_check (a->busy_##n##_port_bitmap, \
port_host_byte_order, 0); \
a->busy_##n##_ports--; \
+ a->busy_##n##_ports_per_thread[thread_index]--; \
break;
foreach_snat_protocol
#undef _
* @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;
snat_session_key_t m_key;
clib_bihash_8_8_t *mapping_hash = &sm->static_mapping_by_local;
+ u32 rand, lo = 0, hi, mid;
if (by_external)
mapping_hash = &sm->static_mapping_by_external;
if (by_external)
{
- mapping->addr = m->local_addr;
- /* Address only mapping doesn't change port */
- mapping->port = m->addr_only ? match.port
- : clib_host_to_net_u16 (m->local_port);
+ if (vec_len (m->locals))
+ {
+ hi = vec_len (m->locals) - 1;
+ rand = 1 + (random_u32 (&sm->random_seed) % m->locals[hi].prefix);
+ while (lo < hi)
+ {
+ mid = ((hi - lo) >> 1) + lo;
+ (rand > m->locals[mid].prefix) ? (lo = mid + 1) : (hi = mid);
+ }
+ if (!(m->locals[lo].prefix >= rand))
+ return 1;
+ mapping->addr = m->locals[lo].addr;
+ mapping->port = clib_host_to_net_u16 (m->locals[lo].port);
+ }
+ else
+ {
+ mapping->addr = m->local_addr;
+ /* Address only mapping doesn't change port */
+ mapping->port = m->addr_only ? match.port
+ : clib_host_to_net_u16 (m->local_port);
+ }
mapping->fib_index = m->fib_index;
+ mapping->protocol = m->proto;
}
else
{
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;
}
static_always_inline u16
-snat_random_port (snat_main_t * sm, u16 min, u16 max)
+snat_random_port (u16 min, u16 max)
{
+ snat_main_t *sm = &snat_main;
return min + random_u32 (&sm->random_seed) /
(random_u32_max() / (max - min + 1) + 1);
}
-int snat_alloc_outside_address_and_port (snat_main_t * sm,
- u32 fib_index,
- u32 thread_index,
- snat_session_key_t * k,
- u32 * address_indexp)
+int
+snat_alloc_outside_address_and_port (snat_address_t * addresses,
+ u32 fib_index,
+ u32 thread_index,
+ snat_session_key_t * k,
+ u32 * address_indexp,
+ u16 port_per_thread,
+ u32 snat_thread_index)
{
- int i;
- snat_address_t *a;
+ snat_main_t *sm = &snat_main;
+
+ return sm->alloc_addr_and_port(addresses, fib_index, thread_index, k,
+ address_indexp, port_per_thread,
+ snat_thread_index);
+}
+
+static int
+nat_alloc_addr_and_port_default (snat_address_t * addresses,
+ u32 fib_index,
+ u32 thread_index,
+ snat_session_key_t * k,
+ u32 * address_indexp,
+ u16 port_per_thread,
+ u32 snat_thread_index)
+{
+ int i, gi = 0;
+ snat_address_t *a, *ga = 0;
u32 portnum;
- for (i = 0; i < vec_len (sm->addresses); i++)
+ for (i = 0; i < vec_len (addresses); i++)
{
- a = sm->addresses + i;
- if (sm->vrf_mode && a->fib_index != ~0 && a->fib_index != fib_index)
- continue;
+ a = addresses + i;
switch (k->protocol)
{
#define _(N, j, n, s) \
case SNAT_PROTOCOL_##N: \
- if (a->busy_##n##_ports < (sm->port_per_thread * sm->num_snat_thread)) \
+ if (a->busy_##n##_ports_per_thread[thread_index] < port_per_thread) \
{ \
- while (1) \
+ if (a->fib_index == fib_index) \
{ \
- portnum = (sm->port_per_thread * \
- sm->per_thread_data[thread_index].snat_thread_index) + \
- snat_random_port(sm, 0, sm->port_per_thread) + 1024; \
- if (clib_bitmap_get_no_check (a->busy_##n##_port_bitmap, portnum)) \
- continue; \
- clib_bitmap_set_no_check (a->busy_##n##_port_bitmap, portnum, 1); \
- a->busy_##n##_ports++; \
- k->addr = a->addr; \
- k->port = clib_host_to_net_u16(portnum); \
- *address_indexp = i; \
- return 0; \
+ while (1) \
+ { \
+ portnum = (port_per_thread * \
+ snat_thread_index) + \
+ snat_random_port(1, port_per_thread) + 1024; \
+ if (clib_bitmap_get_no_check (a->busy_##n##_port_bitmap, portnum)) \
+ continue; \
+ clib_bitmap_set_no_check (a->busy_##n##_port_bitmap, portnum, 1); \
+ a->busy_##n##_ports_per_thread[thread_index]++; \
+ a->busy_##n##_ports++; \
+ k->addr = a->addr; \
+ k->port = clib_host_to_net_u16(portnum); \
+ *address_indexp = i; \
+ return 0; \
+ } \
+ } \
+ else if (a->fib_index == ~0) \
+ { \
+ ga = a; \
+ gi = i; \
} \
} \
break;
}
}
+
+ if (ga)
+ {
+ a = ga;
+ switch (k->protocol)
+ {
+#define _(N, j, n, s) \
+ case SNAT_PROTOCOL_##N: \
+ while (1) \
+ { \
+ portnum = (port_per_thread * \
+ snat_thread_index) + \
+ snat_random_port(1, port_per_thread) + 1024; \
+ if (clib_bitmap_get_no_check (a->busy_##n##_port_bitmap, portnum)) \
+ continue; \
+ clib_bitmap_set_no_check (a->busy_##n##_port_bitmap, portnum, 1); \
+ a->busy_##n##_ports_per_thread[thread_index]++; \
+ a->busy_##n##_ports++; \
+ k->addr = a->addr; \
+ k->port = clib_host_to_net_u16(portnum); \
+ *address_indexp = gi; \
+ return 0; \
+ }
+ break;
+ foreach_snat_protocol
+#undef _
+ default:
+ clib_warning ("unknown protocol");
+ return 1;
+ }
+ }
+
+ /* Totally out of translations to use... */
+ snat_ipfix_logging_addresses_exhausted(0);
+ return 1;
+}
+
+static int
+nat_alloc_addr_and_port_mape (snat_address_t * addresses,
+ u32 fib_index,
+ u32 thread_index,
+ snat_session_key_t * k,
+ u32 * address_indexp,
+ u16 port_per_thread,
+ u32 snat_thread_index)
+{
+ snat_main_t *sm = &snat_main;
+ snat_address_t *a = addresses;
+ u16 m, ports, portnum, A, j;
+ m = 16 - (sm->psid_offset + sm->psid_length);
+ ports = (1 << (16 - sm->psid_length)) - (1 << m);
+
+ if (!vec_len (addresses))
+ goto exhausted;
+
+ switch (k->protocol)
+ {
+#define _(N, i, n, s) \
+ case SNAT_PROTOCOL_##N: \
+ if (a->busy_##n##_ports < ports) \
+ { \
+ while (1) \
+ { \
+ A = snat_random_port(1, pow2_mask(sm->psid_offset)); \
+ j = snat_random_port(0, pow2_mask(m)); \
+ portnum = A | (sm->psid << sm->psid_offset) | (j << (16 - m)); \
+ if (clib_bitmap_get_no_check (a->busy_##n##_port_bitmap, portnum)) \
+ continue; \
+ clib_bitmap_set_no_check (a->busy_##n##_port_bitmap, portnum, 1); \
+ a->busy_##n##_ports++; \
+ k->addr = a->addr; \
+ k->port = clib_host_to_net_u16 (portnum); \
+ *address_indexp = i; \
+ return 0; \
+ } \
+ } \
+ break;
+ foreach_snat_protocol
+#undef _
+ default:
+ clib_warning("unknown protocol");
+ return 1;
+ }
+
+exhausted:
/* Totally out of translations to use... */
snat_ipfix_logging_addresses_exhausted(0);
return 1;
}
+void
+nat44_add_del_address_dpo (ip4_address_t addr, u8 is_add)
+{
+ dpo_id_t dpo_v4 = DPO_INVALID;
+ fib_prefix_t pfx = {
+ .fp_proto = FIB_PROTOCOL_IP4,
+ .fp_len = 32,
+ .fp_addr.ip4.as_u32 = addr.as_u32,
+ };
+
+ if (is_add)
+ {
+ nat_dpo_create (DPO_PROTO_IP4, 0, &dpo_v4);
+ fib_table_entry_special_dpo_add (0, &pfx, FIB_SOURCE_PLUGIN_HI,
+ FIB_ENTRY_FLAG_EXCLUSIVE, &dpo_v4);
+ dpo_reset (&dpo_v4);
+ }
+ else
+ {
+ fib_table_entry_special_remove (0, &pfx, FIB_SOURCE_PLUGIN_HI);
+ }
+}
static clib_error_t *
add_address_command_fn (vlib_main_t * vm,
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)
{
break;
}
+ if (sm->out2in_dpo)
+ nat44_add_del_address_dpo (this_addr, is_add);
+
increment_v4_address (&this_addr);
}
VLIB_CLI_COMMAND (add_address_command, static) = {
.path = "nat44 add address",
- .short_help = "nat44 add addresses <ip4-range-start> [- <ip4-range-end>] "
- "[tenant-vrf <vrf-id>] [del]",
+ .short_help = "nat44 add address <ip4-range-start> [- <ip4-range-end>] "
+ "[tenant-vrf <vrf-id>] [twice-nat] [del]",
.function = add_address_command_fn,
};
u32 sw_if_index = ~0;
vnet_main_t * vnm = vnet_get_main();
int rv;
- snat_protocol_t proto;
+ 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)
{
* to to the local network host.
* To create static mapping between local host address 10.0.0.3 port 6303 and
* external address 4.4.4.4 port 3606 for TCP protocol use:
- * vpp# nat44 add static mapping local tcp 10.0.0.3 6303 external 4.4.4.4 3606
+ * vpp# nat44 add static mapping tcp local 10.0.0.3 6303 external 4.4.4.4 3606
* If not runnig "static mapping only" NAT plugin mode use before:
* vpp# nat44 add address 4.4.4.4
* To create static mapping between local and external address use:
.path = "nat44 add static mapping",
.function = add_static_mapping_command_fn,
.short_help =
- "nat44 add static mapping local tcp|udp|icmp <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 *
+add_identity_mapping_command_fn (vlib_main_t * vm,
+ unformat_input_t * input,
+ vlib_cli_command_t * cmd)
+{
+ unformat_input_t _line_input, *line_input = &_line_input;
+ clib_error_t * error = 0;
+ ip4_address_t addr;
+ u32 port = 0, vrf_id = ~0;
+ int is_add = 1;
+ int addr_only = 1;
+ u32 sw_if_index = ~0;
+ vnet_main_t * vnm = vnet_get_main();
+ int rv;
+ snat_protocol_t proto;
+
+ addr.as_u32 = 0;
+
+ /* Get a line of input. */
+ if (!unformat_user (input, unformat_line_input, line_input))
+ return 0;
+
+ while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
+ {
+ if (unformat (line_input, "%U", unformat_ip4_address, &addr))
+ ;
+ else if (unformat (line_input, "external %U",
+ unformat_vnet_sw_interface, vnm, &sw_if_index))
+ ;
+ else if (unformat (line_input, "vrf %u", &vrf_id))
+ ;
+ else if (unformat (line_input, "%U %u", unformat_snat_protocol, &proto,
+ &port))
+ addr_only = 0;
+ else if (unformat (line_input, "del"))
+ is_add = 0;
+ else
+ {
+ error = clib_error_return (0, "unknown input: '%U'",
+ format_unformat_error, line_input);
+ goto done;
+ }
+ }
+
+ rv = snat_add_static_mapping(addr, addr, (u16) port, (u16) port,
+ vrf_id, addr_only, sw_if_index, proto, is_add,
+ 0);
+
+ switch (rv)
+ {
+ case VNET_API_ERROR_INVALID_VALUE:
+ error = clib_error_return (0, "External port already in use.");
+ goto done;
+ case VNET_API_ERROR_NO_SUCH_ENTRY:
+ if (is_add)
+ error = clib_error_return (0, "External addres must be allocated.");
+ else
+ error = clib_error_return (0, "Mapping not exist.");
+ goto done;
+ case VNET_API_ERROR_NO_SUCH_FIB:
+ error = clib_error_return (0, "No such VRF id.");
+ goto done;
+ case VNET_API_ERROR_VALUE_EXIST:
+ error = clib_error_return (0, "Mapping already exist.");
+ goto done;
+ default:
+ break;
+ }
+
+done:
+ unformat_free (line_input);
+
+ return error;
+}
+
+/*?
+ * @cliexpar
+ * @cliexstart{snat add identity mapping}
+ * Identity mapping translate an IP address to itself.
+ * To create identity mapping for address 10.0.0.3 port 6303 for TCP protocol
+ * use:
+ * vpp# nat44 add identity mapping 10.0.0.3 tcp 6303
+ * To create identity mapping for address 10.0.0.3 use:
+ * vpp# nat44 add identity mapping 10.0.0.3
+ * To create identity mapping for DHCP addressed interface use:
+ * vpp# nat44 add identity mapping GigabitEthernet0/a/0 tcp 3606
+ * @cliexend
+?*/
+VLIB_CLI_COMMAND (add_identity_mapping_command, static) = {
+ .path = "nat44 add identity mapping",
+ .function = add_identity_mapping_command_fn,
+ .short_help = "nat44 add identity mapping <interface>|<ip4-addr> "
+ "[<protocol> <port>] [vrf <table-id>] [del]",
+};
+
+static clib_error_t *
+add_lb_static_mapping_command_fn (vlib_main_t * vm,
+ unformat_input_t * input,
+ vlib_cli_command_t * cmd)
+{
+ unformat_input_t _line_input, *line_input = &_line_input;
+ clib_error_t * error = 0;
+ ip4_address_t l_addr, e_addr;
+ u32 l_port = 0, e_port = 0, vrf_id = 0, probability = 0;
+ int is_add = 1;
+ int 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))
+ return 0;
+
+ while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
+ {
+ if (unformat (line_input, "local %U:%u probability %u",
+ unformat_ip4_address, &l_addr, &l_port, &probability))
+ {
+ memset (&local, 0, sizeof (local));
+ local.addr = l_addr;
+ local.port = (u16) l_port;
+ local.probability = (u8) probability;
+ vec_add1 (locals, local);
+ }
+ else if (unformat (line_input, "external %U:%u", unformat_ip4_address,
+ &e_addr, &e_port))
+ ;
+ else if (unformat (line_input, "vrf %u", &vrf_id))
+ ;
+ 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
+ {
+ error = clib_error_return (0, "unknown input: '%U'",
+ format_unformat_error, line_input);
+ goto done;
+ }
+ }
+
+ if (vec_len (locals) < 2)
+ {
+ error = clib_error_return (0, "at least two local must be set");
+ goto done;
+ }
+
+ if (!proto_set)
+ {
+ error = clib_error_return (0, "missing protocol");
+ goto done;
+ }
+
+ rv = nat44_add_del_lb_static_mapping (e_addr, (u16) e_port, proto, vrf_id,
+ locals, is_add, twice_nat);
+
+ switch (rv)
+ {
+ case VNET_API_ERROR_INVALID_VALUE:
+ error = clib_error_return (0, "External port already in use.");
+ goto done;
+ case VNET_API_ERROR_NO_SUCH_ENTRY:
+ if (is_add)
+ error = clib_error_return (0, "External addres must be allocated.");
+ else
+ error = clib_error_return (0, "Mapping not exist.");
+ goto done;
+ case VNET_API_ERROR_VALUE_EXIST:
+ error = clib_error_return (0, "Mapping already exist.");
+ goto done;
+ default:
+ break;
+ }
+
+done:
+ unformat_free (line_input);
+ vec_free (locals);
+
+ return error;
+}
+
+VLIB_CLI_COMMAND (add_lb_static_mapping_command, static) = {
+ .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> [twice-nat] "
+ "[vrf <table-id>] [del]",
};
static clib_error_t *
snat_get_worker_in2out_cb (ip4_header_t * ip0, u32 rx_fib_index0)
{
snat_main_t *sm = &snat_main;
- snat_user_key_t key0;
- clib_bihash_kv_8_8_t kv0, value0;
u32 next_worker_index = 0;
+ u32 hash;
- key0.addr = ip0->src_address;
- key0.fib_index = rx_fib_index0;
-
- kv0.key = key0.as_u64;
-
- /* Ever heard of of the "user" before? */
- if (clib_bihash_search_8_8 (&sm->worker_by_in, &kv0, &value0))
- {
- /* No, assign next available worker (RR) */
- next_worker_index = sm->first_worker_index;
- if (vec_len (sm->workers))
- {
- next_worker_index +=
- sm->workers[sm->next_worker++ % _vec_len (sm->workers)];
- }
+ next_worker_index = sm->first_worker_index;
+ hash = ip0->src_address.as_u32 + (ip0->src_address.as_u32 >> 8) +
+ (ip0->src_address.as_u32 >> 16) + (ip0->src_address.as_u32 >>24);
- /* add non-traslated packets worker lookup */
- kv0.value = next_worker_index;
- clib_bihash_add_del_8_8 (&sm->worker_by_in, &kv0, 1);
- }
+ if (PREDICT_TRUE (is_pow2 (_vec_len (sm->workers))))
+ next_worker_index += sm->workers[hash & (_vec_len (sm->workers) - 1)];
else
- next_worker_index = value0.value;
+ next_worker_index += sm->workers[hash % _vec_len (sm->workers)];
return next_worker_index;
}
snat_get_worker_out2in_cb (ip4_header_t * ip0, u32 rx_fib_index0)
{
snat_main_t *sm = &snat_main;
- snat_worker_key_t key0;
- clib_bihash_kv_8_8_t kv0, value0;
- udp_header_t * udp0;
+ udp_header_t *udp;
+ u16 port;
+ snat_session_key_t m_key;
+ clib_bihash_kv_8_8_t kv, value;
+ snat_static_mapping_t *m;
+ nat_ed_ses_key_t key;
+ clib_bihash_kv_16_8_t s_kv, s_value;
+ snat_main_per_thread_data_t *tsm;
+ snat_session_t *s;
+ int i;
+ u32 proto;
u32 next_worker_index = 0;
- udp0 = ip4_next_header (ip0);
-
- key0.addr = ip0->dst_address;
- key0.port = udp0->dst_port;
- key0.fib_index = rx_fib_index0;
-
- if (PREDICT_FALSE(ip0->protocol == IP_PROTOCOL_ICMP))
+ /* first try static mappings without port */
+ if (PREDICT_FALSE (pool_elts (sm->static_mappings)))
{
- icmp46_header_t * icmp0 = (icmp46_header_t *) udp0;
- icmp_echo_header_t *echo0 = (icmp_echo_header_t *)(icmp0+1);
- key0.port = echo0->identifier;
+ m_key.addr = ip0->dst_address;
+ m_key.port = 0;
+ m_key.protocol = 0;
+ m_key.fib_index = rx_fib_index0;
+ kv.key = m_key.as_u64;
+ if (!clib_bihash_search_8_8 (&sm->static_mapping_by_external, &kv, &value))
+ {
+ m = pool_elt_at_index (sm->static_mappings, value.value);
+ return m->worker_index;
+ }
}
- kv0.key = key0.as_u64;
+ proto = ip_proto_to_snat_proto (ip0->protocol);
+ udp = ip4_next_header (ip0);
+ port = udp->dst_port;
- /* Ever heard of of the "user" before? */
- if (clib_bihash_search_8_8 (&sm->worker_by_out, &kv0, &value0))
+ if (PREDICT_FALSE (ip4_is_fragment (ip0)))
{
- key0.port = 0;
- kv0.key = key0.as_u64;
+ if (PREDICT_FALSE (nat_reass_is_drop_frag (0)))
+ return vlib_get_thread_index ();
- if (clib_bihash_search_8_8 (&sm->worker_by_out, &kv0, &value0))
+ if (PREDICT_TRUE (!ip4_is_first_fragment (ip0)))
+ {
+ nat_reass_ip4_t *reass;
+
+ reass = nat_ip4_reass_find (ip0->src_address, ip0->dst_address,
+ ip0->fragment_id, ip0->protocol);
+
+ if (reass && (reass->thread_index != (u32) ~ 0))
+ return reass->thread_index;
+ else
+ return vlib_get_thread_index ();
+ }
+ }
+
+ /* unknown protocol */
+ if (PREDICT_FALSE (proto == ~0))
+ {
+ key.l_addr = ip0->dst_address;
+ key.r_addr = ip0->src_address;
+ key.fib_index = rx_fib_index0;
+ key.proto = ip0->protocol;
+ 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 (!clib_bihash_search_16_8 (&sm->out2in_ed, &s_kv, &s_value))
{
- /* No, assign next available worker (RR) */
- next_worker_index = sm->first_worker_index;
- if (vec_len (sm->workers))
+ for (i = 0; i < _vec_len (sm->per_thread_data); i++)
{
- next_worker_index +=
- sm->workers[sm->next_worker++ % _vec_len (sm->workers)];
+ tsm = vec_elt_at_index (sm->per_thread_data, i);
+ if (!pool_is_free_index(tsm->sessions, s_value.value))
+ {
+ s = pool_elt_at_index (tsm->sessions, s_value.value);
+ if (s->out2in.addr.as_u32 == ip0->dst_address.as_u32 &&
+ s->out2in.port == ip0->protocol &&
+ snat_is_unk_proto_session (s))
+ return i;
+ }
}
- }
+ }
+
+ /* if no session use current thread */
+ return vlib_get_thread_index ();
+ }
+
+ if (PREDICT_FALSE (ip0->protocol == IP_PROTOCOL_ICMP))
+ {
+ icmp46_header_t * icmp = (icmp46_header_t *) udp;
+ icmp_echo_header_t *echo = (icmp_echo_header_t *)(icmp + 1);
+ if (!icmp_is_error_message (icmp))
+ port = echo->identifier;
else
{
- /* Static mapping without port */
- next_worker_index = value0.value;
+ ip4_header_t *inner_ip = (ip4_header_t *)(echo + 1);
+ proto = ip_proto_to_snat_proto (inner_ip->protocol);
+ void *l4_header = ip4_next_header (inner_ip);
+ switch (proto)
+ {
+ case SNAT_PROTOCOL_ICMP:
+ icmp = (icmp46_header_t*)l4_header;
+ echo = (icmp_echo_header_t *)(icmp + 1);
+ port = echo->identifier;
+ break;
+ case SNAT_PROTOCOL_UDP:
+ case SNAT_PROTOCOL_TCP:
+ port = ((tcp_udp_header_t*)l4_header)->src_port;
+ break;
+ default:
+ return vlib_get_thread_index ();
+ }
}
+ }
- /* Add to translated packets worker lookup */
- kv0.value = next_worker_index;
- clib_bihash_add_del_8_8 (&sm->worker_by_out, &kv0, 1);
+ /* try static mappings with port */
+ if (PREDICT_FALSE (pool_elts (sm->static_mappings)))
+ {
+ m_key.addr = ip0->dst_address;
+ m_key.port = clib_net_to_host_u16 (port);
+ m_key.protocol = proto;
+ m_key.fib_index = rx_fib_index0;
+ kv.key = m_key.as_u64;
+ if (!clib_bihash_search_8_8 (&sm->static_mapping_by_external, &kv, &value))
+ {
+ m = pool_elt_at_index (sm->static_mappings, value.value);
+ return m->worker_index;
+ }
}
- else
- next_worker_index = value0.value;
+ /* worker by outside port */
+ next_worker_index = sm->first_worker_index;
+ next_worker_index +=
+ sm->workers[(clib_net_to_host_u16 (port) - 1024) / sm->port_per_thread];
return next_worker_index;
}
u32 inside_vrf_id = 0;
u32 static_mapping_buckets = 1024;
u32 static_mapping_memory_size = 64<<20;
+ u32 nat64_bib_buckets = 1024;
+ u32 nat64_bib_memory_size = 128 << 20;
+ u32 nat64_st_buckets = 2048;
+ u32 nat64_st_memory_size = 256 << 20;
u8 static_mapping_only = 0;
u8 static_mapping_connection_tracking = 0;
+ snat_main_per_thread_data_t *tsm;
+ dslite_main_t * dm = &dslite_main;
sm->deterministic = 0;
+ sm->out2in_dpo = 0;
while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
{
}
else if (unformat (input, "deterministic"))
sm->deterministic = 1;
+ else if (unformat (input, "nat64 bib hash buckets %d",
+ &nat64_bib_buckets))
+ ;
+ else if (unformat (input, "nat64 bib hash memory %d",
+ &nat64_bib_memory_size))
+ ;
+ else if (unformat (input, "nat64 st hash buckets %d", &nat64_st_buckets))
+ ;
+ else if (unformat (input, "nat64 st hash memory %d",
+ &nat64_st_memory_size))
+ ;
+ else if (unformat (input, "out2in dpo"))
+ sm->out2in_dpo = 1;
+ else if (unformat (input, "dslite ce"))
+ dslite_set_ce(dm, 1);
else
return clib_error_return (0, "unknown input '%U'",
format_unformat_error, input);
/* for show commands, etc. */
sm->translation_buckets = translation_buckets;
sm->translation_memory_size = translation_memory_size;
+ /* do not exceed load factor 10 */
+ sm->max_translations = 10 * translation_buckets;
sm->user_buckets = user_buckets;
sm->user_memory_size = user_memory_size;
sm->max_translations_per_user = max_translations_per_user;
sm->outside_vrf_id = outside_vrf_id;
sm->outside_fib_index = fib_table_find_or_create_and_lock (FIB_PROTOCOL_IP4,
- outside_vrf_id);
+ outside_vrf_id,
+ FIB_SOURCE_PLUGIN_HI);
sm->inside_vrf_id = inside_vrf_id;
sm->inside_fib_index = fib_table_find_or_create_and_lock (FIB_PROTOCOL_IP4,
- inside_vrf_id);
+ inside_vrf_id,
+ FIB_SOURCE_PLUGIN_HI);
sm->static_mapping_only = static_mapping_only;
sm->static_mapping_connection_tracking = static_mapping_connection_tracking;
+ nat64_set_hash(nat64_bib_buckets, nat64_bib_memory_size, nat64_st_buckets,
+ nat64_st_memory_size);
+
if (sm->deterministic)
{
sm->in2out_node_index = snat_det_in2out_node.index;
sm->icmp_match_in2out_cb = icmp_match_in2out_slow;
sm->icmp_match_out2in_cb = icmp_match_out2in_slow;
- clib_bihash_init_8_8 (&sm->worker_by_in, "worker-by-in", user_buckets,
- user_memory_size);
-
- clib_bihash_init_8_8 (&sm->worker_by_out, "worker-by-out", user_buckets,
- user_memory_size);
-
- clib_bihash_init_8_8 (&sm->in2out, "in2out", translation_buckets,
- translation_memory_size);
+ vec_foreach (tsm, sm->per_thread_data)
+ {
+ clib_bihash_init_8_8 (&tsm->in2out, "in2out", translation_buckets,
+ translation_memory_size);
- clib_bihash_init_8_8 (&sm->out2in, "out2in", translation_buckets,
- translation_memory_size);
+ clib_bihash_init_8_8 (&tsm->out2in, "out2in", translation_buckets,
+ translation_memory_size);
- clib_bihash_init_8_8 (&sm->user_hash, "users", user_buckets,
- user_memory_size);
+ clib_bihash_init_8_8 (&tsm->user_hash, "users", user_buckets,
+ user_memory_size);
+ }
- clib_bihash_init_16_8 (&sm->in2out_unk_proto, "in2out-unk-proto",
+ clib_bihash_init_16_8 (&sm->in2out_ed, "in2out-ed",
translation_buckets, translation_memory_size);
- clib_bihash_init_16_8 (&sm->out2in_unk_proto, "out2in-unk-proto",
+ clib_bihash_init_16_8 (&sm->out2in_ed, "out2in-ed",
translation_buckets, translation_memory_size);
}
else
u8 * format_snat_key (u8 * s, va_list * args)
{
snat_session_key_t * key = va_arg (*args, snat_session_key_t *);
- char * protocol_string = "unknown";
- static char *protocol_strings[] = {
- "UDP",
- "TCP",
- "ICMP",
- };
- if (key->protocol < ARRAY_LEN(protocol_strings))
- protocol_string = protocol_strings[key->protocol];
-
- s = format (s, "%U proto %s port %d fib %d",
- format_ip4_address, &key->addr, protocol_string,
+ s = format (s, "%U proto %U port %d fib %d",
+ format_ip4_address, &key->addr,
+ format_snat_protocol, key->protocol,
clib_net_to_host_u16 (key->port), key->fib_index);
return s;
}
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 (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, " static translation\n");
else
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;
}
u8 * format_snat_static_mapping (u8 * s, va_list * args)
{
snat_static_mapping_t *m = va_arg (*args, snat_static_mapping_t *);
+ 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
- s = format (s, "%U local %U:%d external %U:%d vrf %d",
- 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);
-
+ {
+ if (vec_len (m->locals))
+ {
+ 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,
+ 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_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->twice_nat ? "twice-nat" : "");
+ }
return s;
}
({
vlib_cli_output (vm, "%U %s", format_vnet_sw_interface_name, vnm,
vnet_get_sw_interface (vnm, i->sw_if_index),
- i->is_inside ? "in" : "out");
+ (nat_interface_is_inside(i) &&
+ nat_interface_is_outside(i)) ? "in out" :
+ (nat_interface_is_inside(i) ? "in" : "out"));
}));
pool_foreach (i, sm->output_feature_interfaces,
vlib_cli_output (vm, "%U output-feature %s",
format_vnet_sw_interface_name, vnm,
vnet_get_sw_interface (vnm, i->sw_if_index),
- i->is_inside ? "in" : "out");
+ (nat_interface_is_inside(i) &&
+ nat_interface_is_outside(i)) ? "in out" :
+ (nat_interface_is_inside(i) ? "in" : "out"));
}));
if (vec_len (sm->auto_add_sw_if_indices))
}
}
+ 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)
{
- vlib_cli_output (vm, "%U", format_bihash_8_8, &sm->in2out,
+ vlib_cli_output (vm, "%U", format_bihash_16_8, &sm->in2out_ed,
verbose - 1);
- vlib_cli_output (vm, "%U", format_bihash_8_8, &sm->out2in,
- verbose - 1);
- vlib_cli_output (vm, "%U", format_bihash_8_8, &sm->worker_by_in,
- verbose - 1);
- vlib_cli_output (vm, "%U", format_bihash_8_8, &sm->worker_by_out,
+ vlib_cli_output (vm, "%U", format_bihash_16_8, &sm->out2in_ed,
verbose - 1);
vec_foreach_index (j, sm->per_thread_data)
{
vlib_worker_thread_t *w = vlib_worker_threads + j;
vlib_cli_output (vm, "Thread %d (%s at lcore %u):", j, w->name,
w->lcore_id);
+ vlib_cli_output (vm, " %U", format_bihash_8_8, &tsm->in2out,
+ verbose - 1);
+ vlib_cli_output (vm, " %U", format_bihash_8_8, &tsm->out2in,
+ verbose - 1);
vlib_cli_output (vm, " %d list pool elements",
pool_elts (tsm->list_pool));
}
}
}
+
return 0;
}
snat_main_t *sm = &snat_main;
snat_static_map_resolve_t *rp;
u32 *indices_to_delete = 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)
- {
- /* 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)
- {
- /* Add the static mapping */
- rv = snat_add_static_mapping (rp->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
+ rp = sm->to_resolve + j;
+ /* On this interface? */
+ if (rp->sw_if_index == sw_if_index)
{
- (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,
};
+int
+nat44_del_session (snat_main_t *sm, ip4_address_t *addr, u16 port,
+ snat_protocol_t proto, u32 vrf_id, int is_in)
+{
+ snat_main_per_thread_data_t *tsm;
+ clib_bihash_kv_8_8_t kv, value;
+ ip4_header_t ip;
+ u32 fib_index = fib_table_find (FIB_PROTOCOL_IP4, vrf_id);
+ snat_session_key_t key;
+ snat_session_t *s;
+ clib_bihash_8_8_t *t;
+ snat_user_key_t u_key;
+ snat_user_t *u;
+
+ ip.dst_address.as_u32 = ip.src_address.as_u32 = addr->as_u32;
+ if (sm->num_workers)
+ tsm =
+ vec_elt_at_index (sm->per_thread_data,
+ sm->worker_in2out_cb (&ip, fib_index));
+ else
+ tsm = vec_elt_at_index (sm->per_thread_data, sm->num_workers);
+
+ key.addr.as_u32 = addr->as_u32;
+ key.port = clib_host_to_net_u16 (port);
+ key.protocol = proto;
+ key.fib_index = fib_index;
+ kv.key = key.as_u64;
+ t = is_in ? &tsm->in2out : &tsm->out2in;
+ if (!clib_bihash_search_8_8 (t, &kv, &value))
+ {
+ s = pool_elt_at_index (tsm->sessions, value.value);
+ kv.key = s->in2out.as_u64;
+ clib_bihash_add_del_8_8 (&tsm->in2out, &kv, 0);
+ kv.key = s->out2in.as_u64;
+ clib_bihash_add_del_8_8 (&tsm->out2in, &kv, 0);
+ u_key.addr = s->in2out.addr;
+ u_key.fib_index = s->in2out.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);
+ u->nsessions--;
+ }
+ clib_dlist_remove (tsm->list_pool, s->per_user_index);
+ pool_put (tsm->sessions, s);
+ return 0;
+ }
+
+ return VNET_API_ERROR_NO_SUCH_ENTRY;
+}
+
+static clib_error_t *
+nat44_del_session_command_fn (vlib_main_t * vm,
+ unformat_input_t * input,
+ vlib_cli_command_t * cmd)
+{
+ snat_main_t *sm = &snat_main;
+ unformat_input_t _line_input, *line_input = &_line_input;
+ int is_in = 0;
+ clib_error_t *error = 0;
+ ip4_address_t addr;
+ u32 port = 0, vrf_id = sm->outside_vrf_id;
+ snat_protocol_t proto;
+ int rv;
+
+ /* Get a line of input. */
+ if (!unformat_user (input, unformat_line_input, line_input))
+ return 0;
+
+ while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
+ {
+ if (unformat (line_input, "%U:%u %U", unformat_ip4_address, &addr, &port,
+ unformat_snat_protocol, &proto))
+ ;
+ else if (unformat (line_input, "in"))
+ {
+ is_in = 1;
+ vrf_id = sm->inside_vrf_id;
+ }
+ else if (unformat (line_input, "vrf %u", &vrf_id))
+ ;
+ else
+ {
+ error = clib_error_return (0, "unknown input '%U'",
+ format_unformat_error, line_input);
+ goto done;
+ }
+ }
+
+ rv = nat44_del_session(sm, &addr, port, proto, vrf_id, is_in);
+
+ switch (rv)
+ {
+ case 0:
+ break;
+
+ default:
+ error = clib_error_return (0, "nat44_del_session returned %d", rv);
+ goto done;
+ }
+
+done:
+ unformat_free (line_input);
+
+ return error;
+}
+
+VLIB_CLI_COMMAND (nat44_del_session_command, static) = {
+ .path = "nat44 del session",
+ .short_help = "nat44 del session in|out <addr>:<port> tcp|udp|icmp [vrf <id>]",
+ .function = nat44_del_session_command_fn,
+};
+
+static clib_error_t *
+nat44_set_alloc_addr_and_port_alg_command_fn (vlib_main_t * vm,
+ unformat_input_t * input,
+ vlib_cli_command_t * cmd)
+{
+ snat_main_t *sm = &snat_main;
+ unformat_input_t _line_input, *line_input = &_line_input;
+ clib_error_t *error = 0;
+ u32 psid, psid_offset, psid_length;
+
+ /* Get a line of input. */
+ if (!unformat_user (input, unformat_line_input, line_input))
+ return 0;
+
+ while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
+ {
+ if (unformat (line_input, "default"))
+ sm->alloc_addr_and_port = nat_alloc_addr_and_port_default;
+ else if (unformat (line_input, "map-e psid %d psid-offset %d psid-len %d",
+ &psid, &psid_offset, &psid_length))
+ {
+ sm->alloc_addr_and_port = nat_alloc_addr_and_port_mape;
+ sm->psid = (u16) psid;
+ sm->psid_offset = (u16) psid_offset;
+ sm->psid_length = (u16) psid_length;
+ }
+ else
+ {
+ error = clib_error_return (0, "unknown input '%U'",
+ format_unformat_error, line_input);
+ goto done;
+ }
+ }
+
+done:
+ unformat_free (line_input);
+
+ return error;
+};
+
+VLIB_CLI_COMMAND (nat44_set_alloc_addr_and_port_alg_command, static) = {
+ .path = "nat addr-port-assignment-alg",
+ .short_help = "nat addr-port-assignment-alg <alg-name> [<alg-params>]",
+ .function = nat44_set_alloc_addr_and_port_alg_command_fn,
+};
+
static clib_error_t *
snat_det_map_command_fn (vlib_main_t * vm,
unformat_input_t * input,
}
}
- unformat_free (line_input);
-
rv = snat_det_add_map(sm, &in_addr, (u8) in_plen, &out_addr, (u8)out_plen,
is_add);
}
}
- unformat_free (line_input);
-
dm = snat_det_map_by_user(sm, &in_addr);
if (!dm)
vlib_cli_output (vm, "no match");
{
error = clib_error_return (0, "unknown input '%U'",
format_unformat_error, line_input);
+ goto done;
}
}
- unformat_free (line_input);
-
if (out_port < 1024 || out_port > 65535)
{
error = clib_error_return (0, "wrong port, must be <1024-65535>");
}
}
- unformat_free (line_input);
-
done:
unformat_free (line_input);
snat_main_t *sm = &snat_main;
unformat_input_t _line_input, *line_input = &_line_input;
ip4_address_t out_addr, ext_addr, in_addr;
- u16 out_port, ext_port;
+ u32 out_port, ext_port;
snat_det_map_t * dm;
snat_det_session_t * ses;
snat_det_out_key_t key;
vlib_cli_output (vm, "no match");
else
{
- snat_det_reverse(dm, &ext_addr, out_port, &in_addr);
+ snat_det_reverse(dm, &ext_addr, (u16)out_port, &in_addr);
key.ext_host_addr = out_addr;
- key.ext_host_port = ntohs(ext_port);
- key.out_port = ntohs(out_port);
+ key.ext_host_port = ntohs((u16)ext_port);
+ key.out_port = ntohs((u16)out_port);
ses = snat_det_get_ses_by_out(dm, &out_addr, key.as_u64);
if (!ses)
vlib_cli_output (vm, "no match");
snat_main_t *sm = &snat_main;
unformat_input_t _line_input, *line_input = &_line_input;
ip4_address_t in_addr, ext_addr;
- u16 in_port, ext_port;
+ u32 in_port, ext_port;
snat_det_map_t * dm;
snat_det_session_t * ses;
snat_det_out_key_t key;
else
{
key.ext_host_addr = ext_addr;
- key.ext_host_port = ntohs (ext_port);
- ses = snat_det_find_ses_by_in (dm, &in_addr, ntohs(in_port), key);
+ key.ext_host_port = ntohs ((u16)ext_port);
+ ses = snat_det_find_ses_by_in (dm, &in_addr, ntohs((u16)in_port), key);
if (!ses)
vlib_cli_output (vm, "no match");
else
"<in_addr>:<in_port> <ext_addr>:<ext_port>",
.function = snat_det_close_session_in_fn,
};
+
+static clib_error_t *
+snat_forwarding_set_command_fn (vlib_main_t *vm,
+ unformat_input_t * input,
+ vlib_cli_command_t * cmd)
+{
+ snat_main_t *sm = &snat_main;
+ unformat_input_t _line_input, *line_input = &_line_input;
+ u8 forwarding_enable;
+ u8 forwarding_enable_set = 0;
+ clib_error_t *error = 0;
+
+ /* Get a line of input. */
+ if (!unformat_user (input, unformat_line_input, line_input))
+ return clib_error_return (0, "'enable' or 'disable' expected");
+
+ while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
+ {
+ if (!forwarding_enable_set && unformat (line_input, "enable"))
+ {
+ forwarding_enable = 1;
+ forwarding_enable_set = 1;
+ }
+ else if (!forwarding_enable_set && unformat (line_input, "disable"))
+ {
+ forwarding_enable = 0;
+ forwarding_enable_set = 1;
+ }
+ else
+ {
+ error = clib_error_return (0, "unknown input '%U'",
+ format_unformat_error, line_input);
+ goto done;
+ }
+ }
+
+ if (!forwarding_enable_set)
+ {
+ error = clib_error_return (0, "'enable' or 'disable' expected");
+ goto done;
+ }
+
+ sm->forwarding_enabled = forwarding_enable;
+
+done:
+ unformat_free(line_input);
+
+ return error;
+}
+
+/*?
+ * @cliexpar
+ * @cliexstart{nat44 forwarding}
+ * Enable or disable forwarding
+ * Forward packets which don't match existing translation
+ * or static mapping instead of dropping them.
+ * To enable forwarding, use:
+ * vpp# nat44 forwarding enable
+ * To disable forwarding, use:
+ * vpp# nat44 forwarding disable
+ * @cliexend
+?*/
+VLIB_CLI_COMMAND (snat_forwarding_set_command, static) = {
+ .path = "nat44 forwarding",
+ .short_help = "nat44 forwarding enable|disable",
+ .function = snat_forwarding_set_command_fn,
+};
Code Review / vpp.git / blobdiff