#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/lib/ipfix_logging.h>
#include <nat/nat_inlines.h>
#include <nat/nat44/inlines.h>
#include <nat/nat_affinity.h>
#include <vnet/ip/reass/ip4_sv_reass.h>
#include <vppinfra/bihash_16_8.h>
#include <nat/nat44/ed_inlines.h>
+#include <vnet/ip/ip_table.h>
#include <vpp/app/version.h>
.node_name = "nat44-classify",
.runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa","ip4-sv-reassembly-feature"),
};
-VNET_FEATURE_INIT (ip4_snat_det_in2out, static) = {
- .arc_name = "ip4-unicast",
- .node_name = "nat44-det-in2out",
- .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa","ip4-sv-reassembly-feature"),
-};
-VNET_FEATURE_INIT (ip4_snat_det_out2in, static) = {
- .arc_name = "ip4-unicast",
- .node_name = "nat44-det-out2in",
- .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa","ip4-sv-reassembly-feature",
- "ip4-dhcp-client-detect"),
-};
-VNET_FEATURE_INIT (ip4_nat_det_classify, static) = {
- .arc_name = "ip4-unicast",
- .node_name = "nat44-det-classify",
- .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa","ip4-sv-reassembly-feature"),
-};
VNET_FEATURE_INIT (ip4_nat44_ed_in2out, static) = {
.arc_name = "ip4-unicast",
.node_name = "nat44-ed-in2out",
.node_name = "nat44-hairpin-src",
.runs_after = VNET_FEATURES ("acl-plugin-out-ip4-fa","ip4-sv-reassembly-output-feature"),
};
+VNET_FEATURE_INIT (nat_pre_in2out_output, static) = {
+ .arc_name = "ip4-output",
+ .node_name = "nat-pre-in2out-output",
+ .runs_after = VNET_FEATURES ("ip4-sv-reassembly-output-feature"),
+ .runs_before = VNET_FEATURES ("acl-plugin-out-ip4-fa"),
+};
VNET_FEATURE_INIT (ip4_nat44_ed_in2out_output, static) = {
.arc_name = "ip4-output",
.node_name = "nat44-ed-in2out-output",
};
/* *INDENT-ON* */
+static u32
+nat44_ed_get_worker_out2in_cb (vlib_buffer_t * b, ip4_header_t * ip,
+ u32 rx_fib_index, u8 is_output);
+
+static u32
+nat44_ed_get_worker_in2out_cb (ip4_header_t * ip, u32 rx_fib_index,
+ u8 is_output);
+
+static u32
+snat_get_worker_out2in_cb (vlib_buffer_t * b, ip4_header_t * ip0,
+ u32 rx_fib_index0, u8 is_output);
+
+static u32
+snat_get_worker_in2out_cb (ip4_header_t * ip0, u32 rx_fib_index0,
+ u8 is_output);
+
+static u32 nat_calc_bihash_buckets (u32 n_elts);
+
+u8 *format_static_mapping_kvp (u8 * s, va_list * args);
+
+u8 *format_ed_session_kvp (u8 * s, va_list * args);
+
+void
+nat_ha_sadd_cb (ip4_address_t * in_addr, u16 in_port,
+ ip4_address_t * out_addr, u16 out_port,
+ ip4_address_t * eh_addr, u16 eh_port,
+ ip4_address_t * ehn_addr, u16 ehn_port, u8 proto,
+ u32 fib_index, u16 flags, u32 thread_index);
+
+void
+nat_ha_sdel_cb (ip4_address_t * out_addr, u16 out_port,
+ ip4_address_t * eh_addr, u16 eh_port, u8 proto, u32 fib_index,
+ u32 ti);
+
+void
+nat_ha_sref_cb (ip4_address_t * out_addr, u16 out_port,
+ ip4_address_t * eh_addr, u16 eh_port, u8 proto, u32 fib_index,
+ u32 total_pkts, u64 total_bytes, u32 thread_index);
+
+void
+nat_ha_sadd_ed_cb (ip4_address_t * in_addr, u16 in_port,
+ ip4_address_t * out_addr, u16 out_port,
+ ip4_address_t * eh_addr, u16 eh_port,
+ ip4_address_t * ehn_addr, u16 ehn_port, u8 proto,
+ u32 fib_index, u16 flags, u32 thread_index);
+
+void
+nat_ha_sdel_ed_cb (ip4_address_t * out_addr, u16 out_port,
+ ip4_address_t * eh_addr, u16 eh_port, u8 proto,
+ u32 fib_index, u32 ti);
+
+void
+nat_ha_sdel_ed_cb (ip4_address_t * out_addr, u16 out_port,
+ ip4_address_t * eh_addr, u16 eh_port, u8 proto,
+ u32 fib_index, u32 ti);
+
+void
+nat_ha_sref_ed_cb (ip4_address_t * out_addr, u16 out_port,
+ ip4_address_t * eh_addr, u16 eh_port, u8 proto,
+ u32 fib_index, u32 total_pkts, u64 total_bytes,
+ u32 thread_index);
+
void
nat_free_session_data (snat_main_t * sm, snat_session_t * s, u32 thread_index,
u8 is_ha)
snat_main_per_thread_data_t *tsm =
vec_elt_at_index (sm->per_thread_data, thread_index);
+ if (is_ed_session (s))
+ {
+ per_vrf_sessions_unregister_session (s, thread_index);
+ }
+
if (is_fwd_bypass_session (s))
{
if (snat_is_unk_proto_session (s))
l_addr = &s->in2out.addr;
r_addr = &s->ext_host_addr;
proto = nat_proto_to_ip_proto (s->nat_proto);
+ fib_index = s->in2out.fib_index;
init_ed_k (&ed_kv, *l_addr, l_port, *r_addr, r_port, fib_index,
proto);
}
if (!is_ha)
{
/* log NAT event */
- snat_ipfix_logging_nat44_ses_delete (thread_index,
- s->in2out.addr.as_u32,
- s->out2in.addr.as_u32,
- s->nat_proto,
- s->in2out.port,
- s->out2in.port,
- s->in2out.fib_index);
+ nat_ipfix_logging_nat44_ses_delete (thread_index,
+ s->in2out.addr.as_u32,
+ s->out2in.addr.as_u32,
+ s->nat_proto,
+ s->in2out.port,
+ s->out2in.port,
+ s->in2out.fib_index);
nat_ha_sdel (&s->out2in.addr, s->out2in.port, &s->ext_host_addr,
s->ext_host_port, s->nat_proto, s->out2in.fib_index,
s->nat_proto);
}
-int
-nat44_set_session_limit (u32 session_limit, u32 vrf_id)
-{
- snat_main_t *sm = &snat_main;
- u32 fib_index = fib_table_find (FIB_PROTOCOL_IP4, vrf_id);
- u32 len = vec_len (sm->max_translations_per_fib);
-
- if (len <= fib_index)
- {
- vec_validate (sm->max_translations_per_fib, fib_index + 1);
-
- for (; len < vec_len (sm->max_translations_per_fib); len++)
- sm->max_translations_per_fib[len] = sm->max_translations_per_thread;
- }
-
- sm->max_translations_per_fib[fib_index] = session_limit;
- return 0;
-}
-
void
nat44_free_session_data (snat_main_t * sm, snat_session_t * s,
u32 thread_index, u8 is_ha)
if (!is_ha)
{
- snat_ipfix_logging_nat44_ses_delete (thread_index,
- s->in2out.addr.as_u32,
- s->out2in.addr.as_u32,
- s->nat_proto,
- s->in2out.port,
- s->out2in.port,
- s->in2out.fib_index);
+ nat_ipfix_logging_nat44_ses_delete (thread_index,
+ s->in2out.addr.as_u32,
+ s->out2in.addr.as_u32,
+ s->nat_proto,
+ s->in2out.port,
+ s->out2in.port,
+ s->in2out.fib_index);
nat_ha_sdel (&s->out2in.addr, s->out2in.port, &s->ext_host_addr,
s->ext_host_port, s->nat_proto, s->out2in.fib_index,
thread_index);
vlib_thread_main_t *tm = vlib_get_thread_main ();
if (twice_nat && !sm->endpoint_dependent)
- return VNET_API_ERROR_FEATURE_DISABLED;
+ {
+ nat_log_err ("unsupported");
+ return VNET_API_ERROR_UNSUPPORTED;
+ }
/* Check if address already exists */
/* *INDENT-OFF* */
vec_foreach (ap, twice_nat ? sm->twice_nat_addresses : sm->addresses)
{
if (ap->addr.as_u32 == addr->as_u32)
- return VNET_API_ERROR_VALUE_EXIST;
+ {
+ nat_log_err ("address exist");
+ return VNET_API_ERROR_VALUE_EXIST;
+ }
}
/* *INDENT-ON* */
nat_fib_src_low);
else
ap->fib_index = ~0;
-#define _(N, i, n, s) \
- clib_memset(ap->busy_##n##_port_refcounts, 0, sizeof(ap->busy_##n##_port_refcounts));\
- ap->busy_##n##_ports = 0; \
- ap->busy_##n##_ports_per_thread = 0;\
- vec_validate_init_empty (ap->busy_##n##_ports_per_thread, tm->n_vlib_mains - 1, 0);
- foreach_nat_protocol
-#undef _
- if (twice_nat)
+
+ /* *INDENT-OFF* */
+ #define _(N, i, n, s) \
+ clib_memset(ap->busy_##n##_port_refcounts, 0, sizeof(ap->busy_##n##_port_refcounts));\
+ ap->busy_##n##_ports = 0; \
+ ap->busy_##n##_ports_per_thread = 0;\
+ vec_validate_init_empty (ap->busy_##n##_ports_per_thread, tm->n_vlib_mains - 1, 0);
+ foreach_nat_protocol
+ #undef _
+ /* *INDENT-ON* */
+
+ if (twice_nat)
return 0;
/* Add external address to FIB */
nat_protocol_t proto,
int addr_only, int is_add, u8 * tag,
int twice_nat, int out2in_only,
- int identity_nat)
+ int identity_nat,
+ ip4_address_t pool_addr, int exact)
{
snat_static_map_resolve_t *rp;
rp->out2in_only = out2in_only;
rp->identity_nat = identity_nat;
rp->tag = vec_dup (tag);
+ rp->pool_addr = pool_addr;
+ rp->exact = exact;
}
static u32
u16 l_port, u16 e_port, u32 vrf_id, int addr_only,
u32 sw_if_index, nat_protocol_t proto, int is_add,
twice_nat_type_t twice_nat, u8 out2in_only, u8 * tag,
- u8 identity_nat)
+ u8 identity_nat, ip4_address_t pool_addr, int exact)
{
snat_main_t *sm = &snat_main;
snat_static_mapping_t *m;
snat_add_static_mapping_when_resolved
(sm, l_addr, l_port, sw_if_index, e_port, vrf_id, proto,
- addr_only, is_add, tag, twice_nat, out2in_only, identity_nat);
+ addr_only, is_add, tag, twice_nat, out2in_only,
+ identity_nat, pool_addr, exact);
/* DHCP resolution required? */
if (first_int_addr == 0)
m->local_addr = l_addr;
m->external_addr = e_addr;
m->twice_nat = twice_nat;
+
+ if (twice_nat == TWICE_NAT && exact)
+ {
+ m->flags |= NAT_STATIC_MAPPING_FLAG_EXACT_ADDRESS;
+ m->pool_addr = pool_addr;
+ }
+
if (out2in_only)
m->flags |= NAT_STATIC_MAPPING_FLAG_OUT2IN_ONLY;
if (addr_only)
}
}
if (!a)
- return VNET_API_ERROR_NO_SUCH_ENTRY;
+ {
+ nat_log_err ("no such address");
+ return VNET_API_ERROR_NO_SUCH_ENTRY;
+ }
if (delete_sm)
{
+ ip4_address_t pool_addr = { 0 };
/* *INDENT-OFF* */
pool_foreach (m, sm->static_mappings,
({
if (m->external_addr.as_u32 == addr.as_u32)
(void) snat_add_static_mapping (m->local_addr, m->external_addr,
m->local_port, m->external_port,
- m->vrf_id, is_addr_only_static_mapping(m), ~0,
- m->proto, 0, m->twice_nat,
- is_out2in_only_static_mapping(m), m->tag, is_identity_static_mapping(m));
+ m->vrf_id,
+ is_addr_only_static_mapping(m), ~0,
+ m->proto, 0 /* is_add */,
+ m->twice_nat,
+ is_out2in_only_static_mapping(m),
+ m->tag,
+ is_identity_static_mapping(m),
+ pool_addr, 0);
}));
/* *INDENT-ON* */
}
/* Check if address is used in some static mapping */
if (is_snat_address_used_in_static_mapping (sm, addr))
{
- nat_elog_notice ("address used in static mapping");
+ nat_log_err ("address used in static mapping");
return VNET_API_ERROR_UNSPECIFIED;
}
}
return 0;
}
+static void
+nat_validate_counters (snat_main_t * sm, u32 sw_if_index)
+{
+#define _(x) \
+ vlib_validate_simple_counter (&sm->counters.fastpath.in2out.x, \
+ sw_if_index); \
+ vlib_zero_simple_counter (&sm->counters.fastpath.in2out.x, sw_if_index); \
+ vlib_validate_simple_counter (&sm->counters.fastpath.out2in.x, \
+ sw_if_index); \
+ vlib_zero_simple_counter (&sm->counters.fastpath.out2in.x, sw_if_index); \
+ vlib_validate_simple_counter (&sm->counters.slowpath.in2out.x, \
+ sw_if_index); \
+ vlib_zero_simple_counter (&sm->counters.slowpath.in2out.x, sw_if_index); \
+ vlib_validate_simple_counter (&sm->counters.slowpath.out2in.x, \
+ sw_if_index); \
+ vlib_zero_simple_counter (&sm->counters.slowpath.out2in.x, sw_if_index); \
+ vlib_validate_simple_counter (&sm->counters.fastpath.in2out_ed.x, \
+ sw_if_index); \
+ vlib_zero_simple_counter (&sm->counters.fastpath.in2out_ed.x, sw_if_index); \
+ vlib_validate_simple_counter (&sm->counters.fastpath.out2in_ed.x, \
+ sw_if_index); \
+ vlib_zero_simple_counter (&sm->counters.fastpath.out2in_ed.x, sw_if_index); \
+ vlib_validate_simple_counter (&sm->counters.slowpath.in2out_ed.x, \
+ sw_if_index); \
+ vlib_zero_simple_counter (&sm->counters.slowpath.in2out_ed.x, sw_if_index); \
+ vlib_validate_simple_counter (&sm->counters.slowpath.out2in_ed.x, \
+ sw_if_index); \
+ vlib_zero_simple_counter (&sm->counters.slowpath.out2in_ed.x, sw_if_index);
+ foreach_nat_counter;
+#undef _
+ vlib_validate_simple_counter (&sm->counters.hairpinning, sw_if_index);
+ vlib_zero_simple_counter (&sm->counters.hairpinning, sw_if_index);
+}
+
+void
+expire_per_vrf_sessions (u32 fib_index)
+{
+ per_vrf_sessions_t *per_vrf_sessions;
+ snat_main_per_thread_data_t *tsm;
+ snat_main_t *sm = &snat_main;
+
+ /* *INDENT-OFF* */
+ vec_foreach (tsm, sm->per_thread_data)
+ {
+ vec_foreach (per_vrf_sessions, tsm->per_vrf_sessions_vec)
+ {
+ if ((per_vrf_sessions->rx_fib_index == fib_index) ||
+ (per_vrf_sessions->tx_fib_index == fib_index))
+ {
+ per_vrf_sessions->expired = 1;
+ }
+ }
+ }
+ /* *INDENT-ON* */
+}
+
+void
+update_per_vrf_sessions_vec (u32 fib_index, int is_del)
+{
+ snat_main_t *sm = &snat_main;
+ nat_fib_t *fib;
+
+ // we don't care if it is outside/inside fib
+ // we just care about their ref_count
+ // if it reaches 0 sessions should expire
+ // because the fib isn't valid for NAT anymore
+
+ vec_foreach (fib, sm->fibs)
+ {
+ if (fib->fib_index == fib_index)
+ {
+ if (is_del)
+ {
+ fib->ref_count--;
+ if (!fib->ref_count)
+ {
+ vec_del1 (sm->fibs, fib - sm->fibs);
+ expire_per_vrf_sessions (fib_index);
+ }
+ return;
+ }
+ else
+ fib->ref_count++;
+ }
+ }
+ if (!is_del)
+ {
+ vec_add2 (sm->fibs, fib, 1);
+ fib->ref_count = 1;
+ fib->fib_index = fib_index;
+ }
+}
+
int
snat_interface_add_del (u32 sw_if_index, u8 is_inside, int is_del)
{
const char *feature_name, *del_feature_name;
snat_address_t *ap;
snat_static_mapping_t *m;
- snat_det_map_t *dm;
nat_outside_fib_t *outside_fib;
u32 fib_index = fib_table_get_index_for_sw_if_index (FIB_PROTOCOL_IP4,
sw_if_index);
+ if (!sm->enabled)
+ {
+ nat_log_err ("nat44 is disabled");
+ return VNET_API_ERROR_UNSUPPORTED;
+ }
+
if (sm->out2in_dpo && !is_inside)
- return VNET_API_ERROR_UNSUPPORTED;
+ {
+ nat_log_err ("error unsupported");
+ return VNET_API_ERROR_UNSUPPORTED;
+ }
/* *INDENT-OFF* */
pool_foreach (i, sm->output_feature_interfaces,
({
if (i->sw_if_index == sw_if_index)
- return VNET_API_ERROR_VALUE_EXIST;
+ {
+ nat_log_err ("error interface already configured");
+ return VNET_API_ERROR_VALUE_EXIST;
+ }
}));
/* *INDENT-ON* */
feature_name = is_inside ? "nat44-in2out-fast" : "nat44-out2in-fast";
else
{
- if (sm->num_workers > 1 && !sm->deterministic)
+ if (sm->num_workers > 1)
feature_name =
is_inside ? "nat44-in2out-worker-handoff" :
"nat44-out2in-worker-handoff";
- else if (sm->deterministic)
- feature_name = is_inside ? "nat44-det-in2out" : "nat44-det-out2in";
else if (sm->endpoint_dependent)
{
feature_name = is_inside ? "nat-pre-in2out" : "nat-pre-out2in";
feature_name = is_inside ? "nat44-in2out" : "nat44-out2in";
}
- if (sm->fq_in2out_index == ~0 && !sm->deterministic && sm->num_workers > 1)
+ if (sm->fq_in2out_index == ~0 && sm->num_workers > 1)
sm->fq_in2out_index =
vlib_frame_queue_main_init (sm->in2out_node_index, NAT_FQ_NELTS);
- if (sm->fq_out2in_index == ~0 && !sm->deterministic && sm->num_workers > 1)
+ if (sm->fq_out2in_index == ~0 && sm->num_workers > 1)
sm->fq_out2in_index =
vlib_frame_queue_main_init (sm->out2in_node_index, NAT_FQ_NELTS);
+ if (sm->endpoint_dependent)
+ update_per_vrf_sessions_vec (fib_index, is_del);
+
if (!is_inside)
{
/* *INDENT-OFF* */
outside_fib->fib_index = fib_index;
}
}
+
feature_set:
/* *INDENT-OFF* */
pool_foreach (i, sm->interfaces,
else
i->flags &= ~NAT_INTERFACE_FLAG_IS_OUTSIDE;
- if (sm->num_workers > 1 && !sm->deterministic)
+ if (sm->num_workers > 1)
{
del_feature_name = "nat44-handoff-classify";
feature_name = !is_inside ? "nat44-in2out-worker-handoff" :
"nat44-out2in-worker-handoff";
}
- else if (sm->deterministic)
- {
- del_feature_name = "nat44-det-classify";
- feature_name = !is_inside ? "nat44-det-in2out" :
- "nat44-det-out2in";
- }
else if (sm->endpoint_dependent)
{
del_feature_name = "nat44-ed-classify";
vnet_feature_enable_disable ("ip4-local",
"nat44-ed-hairpinning",
sw_if_index, 1, 0, 0);
- else if (!sm->deterministic)
+ else
vnet_feature_enable_disable ("ip4-local",
"nat44-hairpinning",
sw_if_index, 1, 0, 0);
vnet_feature_enable_disable ("ip4-local",
"nat44-ed-hairpinning",
sw_if_index, 0, 0, 0);
- else if (!sm->deterministic)
+ else
vnet_feature_enable_disable ("ip4-local",
"nat44-hairpinning",
sw_if_index, 0, 0, 0);
(nat_interface_is_outside(i) && !is_inside))
return 0;
- if (sm->num_workers > 1 && !sm->deterministic)
+ if (sm->num_workers > 1)
{
del_feature_name = !is_inside ? "nat44-in2out-worker-handoff" :
"nat44-out2in-worker-handoff";
feature_name = "nat44-handoff-classify";
}
- else if (sm->deterministic)
- {
- del_feature_name = !is_inside ? "nat44-det-in2out" :
- "nat44-det-out2in";
- feature_name = "nat44-det-classify";
- }
else if (sm->endpoint_dependent)
{
del_feature_name = !is_inside ? "nat-pre-in2out" :
if (sm->endpoint_dependent)
vnet_feature_enable_disable ("ip4-local", "nat44-ed-hairpinning",
sw_if_index, 0, 0, 0);
- else if (!sm->deterministic)
+ else
vnet_feature_enable_disable ("ip4-local", "nat44-hairpinning",
sw_if_index, 0, 0, 0);
}
/* *INDENT-ON* */
if (is_del)
- return VNET_API_ERROR_NO_SUCH_ENTRY;
+ {
+ nat_log_err ("error interface couldn't be found");
+ return VNET_API_ERROR_NO_SUCH_ENTRY;
+ }
pool_get (sm->interfaces, i);
i->sw_if_index = sw_if_index;
i->flags = 0;
+ nat_validate_counters (sm, sw_if_index);
+
vnet_feature_enable_disable ("ip4-unicast", feature_name, sw_if_index, 1, 0,
0);
if (sm->endpoint_dependent)
vnet_feature_enable_disable ("ip4-local", "nat44-ed-hairpinning",
sw_if_index, 1, 0, 0);
- else if (!sm->deterministic)
+ else
vnet_feature_enable_disable ("ip4-local", "nat44-hairpinning",
sw_if_index, 1, 0, 0);
}
snat_add_del_addr_to_fib(&m->external_addr, 32, sw_if_index, !is_del);
}));
-
- pool_foreach (dm, sm->det_maps,
- ({
- snat_add_del_addr_to_fib(&dm->out_addr, dm->out_plen, sw_if_index, !is_del);
- }));
/* *INDENT-ON* */
return 0;
u32 fib_index = fib_table_get_index_for_sw_if_index (FIB_PROTOCOL_IP4,
sw_if_index);
+ if (!sm->enabled)
+ {
+ nat_log_err ("nat44 is disabled");
+ return VNET_API_ERROR_UNSUPPORTED;
+ }
- if (sm->deterministic ||
- (sm->static_mapping_only && !(sm->static_mapping_connection_tracking)))
- return VNET_API_ERROR_UNSUPPORTED;
+ if (sm->static_mapping_only && !(sm->static_mapping_connection_tracking))
+ {
+ nat_log_err ("error unsupported");
+ return VNET_API_ERROR_UNSUPPORTED;
+ }
/* *INDENT-OFF* */
pool_foreach (i, sm->interfaces,
({
if (i->sw_if_index == sw_if_index)
- return VNET_API_ERROR_VALUE_EXIST;
+ {
+ nat_log_err ("error interface already configured");
+ return VNET_API_ERROR_VALUE_EXIST;
+ }
}));
/* *INDENT-ON* */
+ if (sm->endpoint_dependent)
+ update_per_vrf_sessions_vec (fib_index, is_del);
+
if (!is_inside)
{
/* *INDENT-OFF* */
return rv;
vnet_feature_enable_disable ("ip4-unicast", "nat-pre-out2in",
sw_if_index, !is_del, 0, 0);
- vnet_feature_enable_disable ("ip4-output", "nat44-ed-in2out-output",
+ vnet_feature_enable_disable ("ip4-output", "nat-pre-in2out-output",
sw_if_index, !is_del, 0, 0);
}
else
/* *INDENT-ON* */
if (is_del)
- return VNET_API_ERROR_NO_SUCH_ENTRY;
+ {
+ nat_log_err ("error interface couldn't be found");
+ return VNET_API_ERROR_NO_SUCH_ENTRY;
+ }
pool_get (sm->output_feature_interfaces, i);
i->sw_if_index = sw_if_index;
i->flags = 0;
+ nat_validate_counters (sm, sw_if_index);
if (is_inside)
i->flags |= NAT_INTERFACE_FLAG_IS_INSIDE;
else
}
static void
-snat_update_outside_fib (u32 sw_if_index, u32 new_fib_index,
+snat_update_outside_fib (ip4_main_t * im, uword opaque,
+ u32 sw_if_index, u32 new_fib_index,
u32 old_fib_index)
{
snat_main_t *sm = &snat_main;
u8 is_add = 1;
u8 match = 0;
- if (new_fib_index == old_fib_index)
- return;
-
- if (!vec_len (sm->outside_fibs))
- return;
+ if (!sm->enabled || (new_fib_index == old_fib_index)
+ || (!vec_len (sm->outside_fibs)))
+ {
+ return;
+ }
/* *INDENT-OFF* */
pool_foreach (i, sm->interfaces,
}
static void
-snat_ip4_table_bind (ip4_main_t * im,
- uword opaque,
- u32 sw_if_index, u32 new_fib_index, u32 old_fib_index)
-{
- snat_update_outside_fib (sw_if_index, new_fib_index, old_fib_index);
-}
+snat_update_outside_fib (ip4_main_t * im, uword opaque,
+ u32 sw_if_index, u32 new_fib_index,
+ u32 old_fib_index);
static void
snat_ip4_add_del_interface_address_cb (ip4_main_t * im,
}
static clib_error_t *
-snat_init (vlib_main_t * vm)
+nat_ip_table_add_del (vnet_main_t * vnm, u32 table_id, u32 is_add)
{
snat_main_t *sm = &snat_main;
- clib_error_t *error = 0;
- ip4_main_t *im = &ip4_main;
- ip_lookup_main_t *lm = &im->lookup_main;
- uword *p;
- vlib_thread_registration_t *tr;
- vlib_thread_main_t *tm = vlib_get_thread_main ();
- uword *bitmap = 0;
- u32 i;
- ip4_add_del_interface_address_callback_t cb4;
+ u32 fib_index;
+
+ if (sm->endpoint_dependent)
+ {
+ // TODO: consider removing all NAT interfaces
+
+ if (!is_add)
+ {
+ fib_index = ip4_fib_index_from_table_id (table_id);
+ if (fib_index != ~0)
+ expire_per_vrf_sessions (fib_index);
+ }
+ }
+ return 0;
+}
+
+VNET_IP_TABLE_ADD_DEL_FUNCTION (nat_ip_table_add_del);
+
+void
+nat44_set_node_indexes (snat_main_t * sm, vlib_main_t * vm)
+{
vlib_node_t *node;
- sm->vnet_main = vnet_get_main ();
- sm->ip4_main = im;
- sm->ip4_lookup_main = lm;
- sm->api_main = vlibapi_get_main ();
- sm->first_worker_index = 0;
- sm->num_workers = 0;
- sm->workers = 0;
- sm->port_per_thread = 0xffff - 1024;
- sm->fq_in2out_index = ~0;
- sm->fq_in2out_output_index = ~0;
- sm->fq_out2in_index = ~0;
+ node = vlib_get_node_by_name (vm, (u8 *) "nat44-out2in");
+ sm->ei_out2in_node_index = node->index;
+ node = vlib_get_node_by_name (vm, (u8 *) "nat44-in2out");
+ sm->ei_in2out_node_index = node->index;
+ node = vlib_get_node_by_name (vm, (u8 *) "nat44-in2out-output");
+ sm->ei_in2out_output_node_index = node->index;
- sm->alloc_addr_and_port = nat_alloc_addr_and_port_default;
- sm->addr_and_port_alloc_alg = NAT_ADDR_AND_PORT_ALLOC_ALG_DEFAULT;
- sm->forwarding_enabled = 0;
- sm->log_class = vlib_log_register_class ("nat", 0);
- sm->log_level = SNAT_LOG_ERROR;
- sm->mss_clamping = 0;
+ node = vlib_get_node_by_name (vm, (u8 *) "nat44-ed-out2in");
+ sm->ed_out2in_node_index = node->index;
+ node = vlib_get_node_by_name (vm, (u8 *) "nat44-ed-in2out");
+ sm->ed_in2out_node_index = node->index;
+ node = vlib_get_node_by_name (vm, (u8 *) "nat44-ed-in2out-output");
+ sm->ed_in2out_output_node_index = node->index;
node = vlib_get_node_by_name (vm, (u8 *) "error-drop");
sm->error_node_index = node->index;
-
node = vlib_get_node_by_name (vm, (u8 *) "nat-pre-in2out");
sm->pre_in2out_node_index = node->index;
node = vlib_get_node_by_name (vm, (u8 *) "nat-pre-out2in");
sm->pre_out2in_node_index = node->index;
-
node = vlib_get_node_by_name (vm, (u8 *) "nat-pre-in2out");
sm->pre_in2out_node_index = node->index;
-
node = vlib_get_node_by_name (vm, (u8 *) "nat-pre-out2in");
sm->pre_out2in_node_index = node->index;
-
- node = vlib_get_node_by_name (vm, (u8 *) "nat44-in2out");
- sm->in2out_node_index = node->index;
- node = vlib_get_node_by_name (vm, (u8 *) "nat44-in2out-output");
- sm->in2out_output_node_index = node->index;
node = vlib_get_node_by_name (vm, (u8 *) "nat44-in2out-fast");
sm->in2out_fast_node_index = node->index;
node = vlib_get_node_by_name (vm, (u8 *) "nat44-in2out-slowpath");
sm->in2out_slowpath_node_index = node->index;
node = vlib_get_node_by_name (vm, (u8 *) "nat44-in2out-output-slowpath");
sm->in2out_slowpath_output_node_index = node->index;
-
- node = vlib_get_node_by_name (vm, (u8 *) "nat44-ed-in2out");
- sm->ed_in2out_node_index = node->index;
node = vlib_get_node_by_name (vm, (u8 *) "nat44-ed-in2out-slowpath");
sm->ed_in2out_slowpath_node_index = node->index;
-
- node = vlib_get_node_by_name (vm, (u8 *) "nat44-out2in");
- sm->out2in_node_index = node->index;
node = vlib_get_node_by_name (vm, (u8 *) "nat44-out2in-fast");
sm->out2in_fast_node_index = node->index;
-
- node = vlib_get_node_by_name (vm, (u8 *) "nat44-ed-out2in");
- sm->ed_out2in_node_index = node->index;
node = vlib_get_node_by_name (vm, (u8 *) "nat44-ed-out2in-slowpath");
sm->ed_out2in_slowpath_node_index = node->index;
-
- node = vlib_get_node_by_name (vm, (u8 *) "nat44-det-in2out");
- sm->det_in2out_node_index = node->index;
- node = vlib_get_node_by_name (vm, (u8 *) "nat44-det-out2in");
- sm->det_out2in_node_index = node->index;
-
node = vlib_get_node_by_name (vm, (u8 *) "nat44-hairpinning");
sm->hairpinning_node_index = node->index;
node = vlib_get_node_by_name (vm, (u8 *) "nat44-hairpin-dst");
sm->ed_hairpin_dst_node_index = node->index;
node = vlib_get_node_by_name (vm, (u8 *) "nat44-ed-hairpin-src");
sm->ed_hairpin_src_node_index = node->index;
+}
- p = hash_get_mem (tm->thread_registrations_by_name, "workers");
- if (p)
- {
- tr = (vlib_thread_registration_t *) p[0];
- if (tr)
- {
+#define nat_init_simple_counter(c, n, sn) \
+do \
+ { \
+ c.name = n; \
+ c.stat_segment_name = sn; \
+ vlib_validate_simple_counter (&c, 0); \
+ vlib_zero_simple_counter (&c, 0); \
+ } while (0);
+
+static clib_error_t *
+nat_init (vlib_main_t * vm)
+{
+ snat_main_t *sm = &snat_main;
+ clib_error_t *error = 0;
+ vlib_thread_main_t *tm = vlib_get_thread_main ();
+ vlib_thread_registration_t *tr;
+ ip4_add_del_interface_address_callback_t cbi = { 0 };
+ ip4_table_bind_callback_t cbt = { 0 };
+ u32 i, num_threads = 0;
+ uword *p, *bitmap = 0;
+
+ clib_memset (sm, 0, sizeof (*sm));
+
+ // required
+ sm->vnet_main = vnet_get_main ();
+ // convenience
+ sm->ip4_main = &ip4_main;
+ sm->api_main = vlibapi_get_main ();
+ sm->ip4_lookup_main = &ip4_main.lookup_main;
+
+ // frame queue indices used for handoff
+ sm->fq_out2in_index = ~0;
+ sm->fq_in2out_index = ~0;
+ sm->fq_in2out_output_index = ~0;
+
+ sm->log_level = SNAT_LOG_ERROR;
+
+ nat44_set_node_indexes (sm, vm);
+ sm->log_class = vlib_log_register_class ("nat", 0);
+ nat_ipfix_logging_init (vm);
+
+ nat_init_simple_counter (sm->total_users, "total-users",
+ "/nat44/total-users");
+ nat_init_simple_counter (sm->total_sessions, "total-sessions",
+ "/nat44/total-sessions");
+ nat_init_simple_counter (sm->user_limit_reached, "user-limit-reached",
+ "/nat44/user-limit-reached");
+
+#define _(x) \
+ sm->counters.fastpath.in2out.x.name = #x; \
+ sm->counters.fastpath.in2out.x.stat_segment_name = \
+ "/nat44/in2out/fastpath/" #x; \
+ sm->counters.slowpath.in2out.x.name = #x; \
+ sm->counters.slowpath.in2out.x.stat_segment_name = \
+ "/nat44/in2out/slowpath/" #x; \
+ sm->counters.fastpath.out2in.x.name = #x; \
+ sm->counters.fastpath.out2in.x.stat_segment_name = \
+ "/nat44/out2in/fastpath/" #x; \
+ sm->counters.slowpath.out2in.x.name = #x; \
+ sm->counters.slowpath.out2in.x.stat_segment_name = \
+ "/nat44/out2in/slowpath/" #x; \
+ sm->counters.fastpath.in2out_ed.x.name = #x; \
+ sm->counters.fastpath.in2out_ed.x.stat_segment_name = \
+ "/nat44/ed/in2out/fastpath/" #x; \
+ sm->counters.slowpath.in2out_ed.x.name = #x; \
+ sm->counters.slowpath.in2out_ed.x.stat_segment_name = \
+ "/nat44/ed/in2out/slowpath/" #x; \
+ sm->counters.fastpath.out2in_ed.x.name = #x; \
+ sm->counters.fastpath.out2in_ed.x.stat_segment_name = \
+ "/nat44/ed/out2in/fastpath/" #x; \
+ sm->counters.slowpath.out2in_ed.x.name = #x; \
+ sm->counters.slowpath.out2in_ed.x.stat_segment_name = \
+ "/nat44/ed/out2in/slowpath/" #x;
+ foreach_nat_counter;
+#undef _
+ sm->counters.hairpinning.name = "hairpinning";
+ sm->counters.hairpinning.stat_segment_name = "/nat44/hairpinning";
+
+ p = hash_get_mem (tm->thread_registrations_by_name, "workers");
+ if (p)
+ {
+ tr = (vlib_thread_registration_t *) p[0];
+ if (tr)
+ {
sm->num_workers = tr->count;
sm->first_worker_index = tr->first_index;
}
}
-
- vec_validate (sm->per_thread_data, tm->n_vlib_mains - 1);
+ num_threads = tm->n_vlib_mains - 1;
+ sm->port_per_thread = 0xffff - 1024;
+ vec_validate (sm->per_thread_data, num_threads);
/* Use all available workers by default */
if (sm->num_workers > 1)
{
+
for (i = 0; i < sm->num_workers; i++)
bitmap = clib_bitmap_set (bitmap, i, 1);
snat_set_workers (bitmap);
clib_bitmap_free (bitmap);
}
else
+ sm->per_thread_data[0].snat_thread_index = 0;
+
+ /* callbacks to call when interface address changes. */
+ cbi.function = snat_ip4_add_del_interface_address_cb;
+ vec_add1 (sm->ip4_main->add_del_interface_address_callbacks, cbi);
+ cbi.function = nat_ip4_add_del_addr_only_sm_cb;
+ vec_add1 (sm->ip4_main->add_del_interface_address_callbacks, cbi);
+
+ /* callbacks to call when interface to table biding changes */
+ cbt.function = snat_update_outside_fib;
+ vec_add1 (sm->ip4_main->table_bind_callbacks, cbt);
+
+ // TODO: is it possible to move it into snat_main ?
+ nat_fib_src_low =
+ fib_source_allocate ("nat-low", FIB_SOURCE_PRIORITY_LOW,
+ FIB_SOURCE_BH_SIMPLE);
+ nat_fib_src_hi =
+ fib_source_allocate ("nat-hi", FIB_SOURCE_PRIORITY_HI,
+ FIB_SOURCE_BH_SIMPLE);
+
+ /* used only by out2in-dpo feature */
+ nat_dpo_module_init ();
+
+ nat_affinity_init (vm);
+ nat_ha_init (vm, sm->num_workers, num_threads);
+
+ test_key_calc_split ();
+ error = snat_api_init (vm, sm);
+ return error;
+}
+
+VLIB_INIT_FUNCTION (nat_init);
+
+int
+nat44_plugin_enable (nat44_config_t c)
+{
+ snat_main_t *sm = &snat_main;
+ u32 static_mapping_buckets = 1024;
+ u32 static_mapping_memory_size = 64 << 20;
+
+ if (sm->enabled)
{
- sm->per_thread_data[0].snat_thread_index = 0;
+ nat_log_err ("nat44 is enabled");
+ return 1;
}
- error = snat_api_init (vm, sm);
- if (error)
- return error;
+ // c.static_mapping_only + c.connection_tracking
+ // - supported in NAT EI & NAT ED
+ // c.out2in_dpo, c.static_mapping_only
+ // - supported in NAT EI
- /* Set up the interface address add/del callback */
- cb4.function = snat_ip4_add_del_interface_address_cb;
- cb4.function_opaque = 0;
+ if (c.endpoint_dependent)
+ {
+ if ((c.static_mapping_only && !c.connection_tracking) || c.out2in_dpo)
+ {
+ nat_log_err ("unsupported combination of configuration");
+ return 1;
+ }
+ if (c.users || c.user_sessions)
+ {
+ nat_log_err ("unsupported combination of configuration");
+ return 1;
+ }
+ }
- vec_add1 (im->add_del_interface_address_callbacks, cb4);
+ // reset to defaults:
+ sm->alloc_addr_and_port = nat_alloc_addr_and_port_default;
+ sm->addr_and_port_alloc_alg = NAT_ADDR_AND_PORT_ALLOC_ALG_DEFAULT;
+ //
+ sm->udp_timeout = SNAT_UDP_TIMEOUT;
+ sm->icmp_timeout = SNAT_ICMP_TIMEOUT;
+ sm->tcp_transitory_timeout = SNAT_TCP_TRANSITORY_TIMEOUT;
+ sm->tcp_established_timeout = SNAT_TCP_ESTABLISHED_TIMEOUT;
+
+ // nat44 feature configuration
+ sm->endpoint_dependent = c.endpoint_dependent;
+ sm->static_mapping_only = c.static_mapping_only;
+ sm->static_mapping_connection_tracking = c.connection_tracking;
+ sm->forwarding_enabled = 0;
+ sm->mss_clamping = 0;
- cb4.function = nat_ip4_add_del_addr_only_sm_cb;
- cb4.function_opaque = 0;
+ if (!c.users)
+ {
+ c.users = 1024;
+ }
+ sm->max_users_per_thread = c.users;
+ sm->user_buckets = nat_calc_bihash_buckets (c.users);
- vec_add1 (im->add_del_interface_address_callbacks, cb4);
+ if (!c.sessions)
+ {
+ // default value based on legacy setting of load factor 10 * default
+ // translation buckets 1024
+ c.sessions = 10 * 1024;
+ }
+ sm->max_translations_per_thread = c.sessions;
+ sm->translation_buckets = nat_calc_bihash_buckets (c.sessions);
+
+ vec_add1 (sm->max_translations_per_fib, sm->max_translations_per_thread);
+ sm->max_translations_per_user
+ = c.user_sessions ? c.user_sessions : sm->max_translations_per_thread;
+
+ sm->outside_vrf_id = c.outside_vrf;
+ sm->outside_fib_index =
+ fib_table_find_or_create_and_lock
+ (FIB_PROTOCOL_IP4, c.outside_vrf, nat_fib_src_hi);
+
+ sm->inside_vrf_id = c.inside_vrf;
+ sm->inside_fib_index =
+ fib_table_find_or_create_and_lock
+ (FIB_PROTOCOL_IP4, c.inside_vrf, nat_fib_src_hi);
+
+ if (c.endpoint_dependent)
+ {
+ sm->worker_out2in_cb = nat44_ed_get_worker_out2in_cb;
+ sm->worker_in2out_cb = nat44_ed_get_worker_in2out_cb;
+ sm->out2in_node_index = sm->ed_out2in_node_index;
+ sm->in2out_node_index = sm->ed_in2out_node_index;
+ sm->in2out_output_node_index = sm->ed_in2out_output_node_index;
+ sm->icmp_match_out2in_cb = icmp_match_out2in_ed;
+ sm->icmp_match_in2out_cb = icmp_match_in2out_ed;
+
+ clib_bihash_init_16_8 (&sm->out2in_ed, "out2in-ed",
+ sm->translation_buckets, 0);
+ clib_bihash_set_kvp_format_fn_16_8 (&sm->out2in_ed,
+ format_ed_session_kvp);
- nat_dpo_module_init ();
- /* Init counters */
- sm->total_users.name = "total-users";
- sm->total_users.stat_segment_name = "/nat44/total-users";
- vlib_validate_simple_counter (&sm->total_users, 0);
+ nat_affinity_enable ();
+
+ nat_ha_enable (nat_ha_sadd_ed_cb, nat_ha_sdel_ed_cb, nat_ha_sref_ed_cb);
+ }
+ else
+ {
+ sm->worker_out2in_cb = snat_get_worker_out2in_cb;
+ sm->worker_in2out_cb = snat_get_worker_in2out_cb;
+ sm->out2in_node_index = sm->ei_out2in_node_index;
+ sm->in2out_node_index = sm->ei_in2out_node_index;
+ sm->in2out_output_node_index = sm->ei_in2out_output_node_index;
+ sm->icmp_match_out2in_cb = icmp_match_out2in_slow;
+ sm->icmp_match_in2out_cb = icmp_match_in2out_slow;
+
+ nat_ha_enable (nat_ha_sadd_cb, nat_ha_sdel_cb, nat_ha_sref_cb);
+ }
+
+ // c.static_mapping & c.connection_tracking require
+ // session database
+ if (!c.static_mapping_only
+ || (c.static_mapping_only && c.connection_tracking))
+ {
+ snat_main_per_thread_data_t *tsm;
+ /* *INDENT-OFF* */
+ vec_foreach (tsm, sm->per_thread_data)
+ {
+ nat44_db_init (tsm);
+ }
+ /* *INDENT-ON* */
+ }
+ else
+ {
+ sm->icmp_match_in2out_cb = icmp_match_in2out_fast;
+ sm->icmp_match_out2in_cb = icmp_match_out2in_fast;
+ }
+
+ clib_bihash_init_8_8 (&sm->static_mapping_by_local,
+ "static_mapping_by_local", static_mapping_buckets,
+ static_mapping_memory_size);
+ clib_bihash_set_kvp_format_fn_8_8 (&sm->static_mapping_by_local,
+ format_static_mapping_kvp);
+
+ clib_bihash_init_8_8 (&sm->static_mapping_by_external,
+ "static_mapping_by_external",
+ static_mapping_buckets, static_mapping_memory_size);
+ clib_bihash_set_kvp_format_fn_8_8 (&sm->static_mapping_by_external,
+ format_static_mapping_kvp);
+
+ // last: reset counters
vlib_zero_simple_counter (&sm->total_users, 0);
- sm->total_sessions.name = "total-sessions";
- sm->total_sessions.stat_segment_name = "/nat44/total-sessions";
- vlib_validate_simple_counter (&sm->total_sessions, 0);
vlib_zero_simple_counter (&sm->total_sessions, 0);
- sm->user_limit_reached.name = "user-limit-reached";
- sm->user_limit_reached.stat_segment_name = "/nat44/user-limit-reached";
- vlib_validate_simple_counter (&sm->user_limit_reached, 0);
vlib_zero_simple_counter (&sm->user_limit_reached, 0);
- /* Init IPFIX logging */
- snat_ipfix_logging_init (vm);
+ sm->enabled = 1;
- /* Init NAT64 */
- error = nat64_init (vm);
- if (error)
- return error;
+ nat_log_info ("nat44 enable");
- ip4_table_bind_callback_t cbt4 = {
- .function = snat_ip4_table_bind,
- };
- vec_add1 (ip4_main.table_bind_callbacks, cbt4);
-
- nat_fib_src_hi = fib_source_allocate ("nat-hi",
- FIB_SOURCE_PRIORITY_HI,
- FIB_SOURCE_BH_SIMPLE);
- nat_fib_src_low = fib_source_allocate ("nat-low",
- FIB_SOURCE_PRIORITY_LOW,
- FIB_SOURCE_BH_SIMPLE);
+ return 0;
+}
- test_key_calc_split ();
- return error;
+void
+nat44_addresses_free (snat_address_t ** addresses)
+{
+ snat_address_t *ap;
+ /* *INDENT-OFF* */
+ vec_foreach (ap, *addresses)
+ {
+ #define _(N, i, n, s) \
+ vec_free (ap->busy_##n##_ports_per_thread);
+ foreach_nat_protocol
+ #undef _
+ }
+ /* *INDENT-ON* */
+ vec_free (*addresses);
+ *addresses = 0;
}
-VLIB_INIT_FUNCTION (snat_init);
+int
+nat44_plugin_disable ()
+{
+ snat_main_t *sm = &snat_main;
+ snat_interface_t *i, *vec;
+ int error = 0;
+
+ if (!sm->enabled)
+ {
+ nat_log_err ("nat44 is disabled");
+ return 1;
+ }
+
+ // first unregister all nodes from interfaces
+ vec = vec_dup (sm->interfaces);
+ /* *INDENT-OFF* */
+ vec_foreach (i, vec)
+ {
+ if (nat_interface_is_inside(i))
+ error = snat_interface_add_del (i->sw_if_index, 1, 1);
+ if (nat_interface_is_outside(i))
+ error = snat_interface_add_del (i->sw_if_index, 0, 1);
+
+ if (error)
+ {
+ nat_log_err ("error occurred while removing interface %u",
+ i->sw_if_index);
+ }
+ }
+ /* *INDENT-ON* */
+ vec_free (vec);
+ sm->interfaces = 0;
+
+ vec = vec_dup (sm->output_feature_interfaces);
+ /* *INDENT-OFF* */
+ vec_foreach (i, vec)
+ {
+ if (nat_interface_is_inside(i))
+ error = snat_interface_add_del_output_feature (i->sw_if_index, 1, 1);
+ if (nat_interface_is_outside(i))
+ error = snat_interface_add_del_output_feature (i->sw_if_index, 0, 1);
+
+ if (error)
+ {
+ nat_log_err ("error occurred while removing interface %u",
+ i->sw_if_index);
+ }
+ }
+ /* *INDENT-ON* */
+ vec_free (vec);
+ sm->output_feature_interfaces = 0;
+
+ vec_free (sm->max_translations_per_fib);
+
+ if (sm->endpoint_dependent)
+ {
+ nat_affinity_disable ();
+ clib_bihash_free_16_8 (&sm->out2in_ed);
+ }
+
+ clib_bihash_free_8_8 (&sm->static_mapping_by_local);
+ clib_bihash_free_8_8 (&sm->static_mapping_by_external);
+
+ if (!sm->static_mapping_only ||
+ (sm->static_mapping_only && sm->static_mapping_connection_tracking))
+ {
+ snat_main_per_thread_data_t *tsm;
+ /* *INDENT-OFF* */
+ vec_foreach (tsm, sm->per_thread_data)
+ {
+ nat44_db_free (tsm);
+ }
+ /* *INDENT-ON* */
+ }
+
+ pool_free (sm->static_mappings);
+
+ nat44_addresses_free (&sm->addresses);
+ nat44_addresses_free (&sm->twice_nat_addresses);
+
+
+ vec_free (sm->to_resolve);
+ vec_free (sm->auto_add_sw_if_indices);
+ vec_free (sm->auto_add_sw_if_indices_twice_nat);
+
+ sm->to_resolve = 0;
+ sm->auto_add_sw_if_indices = 0;
+ sm->auto_add_sw_if_indices_twice_nat = 0;
+
+ sm->forwarding_enabled = 0;
+
+ sm->enabled = 0;
+
+ return 0;
+}
void
snat_free_outside_address_and_port (snat_address_t * addresses,
u8 * is_addr_only,
twice_nat_type_t * twice_nat,
lb_nat_type_t * lb, ip4_address_t * ext_host_addr,
- u8 * is_identity_nat)
+ u8 * is_identity_nat, snat_static_mapping_t ** out)
{
clib_bihash_kv_8_8_t kv, value;
+ clib_bihash_8_8_t *mapping_hash;
snat_static_mapping_t *m;
- clib_bihash_8_8_t *mapping_hash = &sm->static_mapping_by_local;
u32 rand, lo = 0, hi, mid, *tmp = 0, i;
- u8 backend_index;
nat44_lb_addr_port_t *local;
+ u8 backend_index;
- if (by_external)
+ if (!by_external)
{
- mapping_hash = &sm->static_mapping_by_external;
- init_nat_k (&kv, match_addr, match_port, 0, match_protocol);
+ mapping_hash = &sm->static_mapping_by_local;
+ init_nat_k (&kv, match_addr, match_port, match_fib_index,
+ match_protocol);
if (clib_bihash_search_8_8 (mapping_hash, &kv, &value))
{
/* Try address only mapping */
- init_nat_k (&kv, match_addr, 0, 0, 0);
+ init_nat_k (&kv, match_addr, 0, match_fib_index, 0);
if (clib_bihash_search_8_8 (mapping_hash, &kv, &value))
return 1;
}
-
}
else
{
- init_nat_k (&kv, match_addr, match_port, match_fib_index,
- match_protocol);
+ mapping_hash = &sm->static_mapping_by_external;
+ init_nat_k (&kv, match_addr, match_port, 0, match_protocol);
if (clib_bihash_search_8_8 (mapping_hash, &kv, &value))
{
/* Try address only mapping */
- init_nat_k (&kv, match_addr, 0, match_fib_index, 0);
+ init_nat_k (&kv, match_addr, 0, 0, 0);
if (clib_bihash_search_8_8 (mapping_hash, &kv, &value))
return 1;
}
-
}
m = pool_elt_at_index (sm->static_mappings, value.value);
if (PREDICT_FALSE (is_identity_nat != 0))
*is_identity_nat = is_identity_static_mapping (m);
+ if (out != 0)
+ *out = m;
+
return 0;
}
}
/* Totally out of translations to use... */
- snat_ipfix_logging_addresses_exhausted (thread_index, 0);
+ nat_ipfix_logging_addresses_exhausted (thread_index, 0);
return 1;
}
exhausted:
/* Totally out of translations to use... */
- snat_ipfix_logging_addresses_exhausted (thread_index, 0);
+ nat_ipfix_logging_addresses_exhausted (thread_index, 0);
return 1;
}
exhausted:
/* Totally out of translations to use... */
- snat_ipfix_logging_addresses_exhausted (thread_index, 0);
+ nat_ipfix_logging_addresses_exhausted (thread_index, 0);
return 1;
}
/* try static mappings with port */
if (PREDICT_FALSE (pool_elts (sm->static_mappings)))
{
- init_nat_k (&kv, ip->dst_address, proto, 0, port);
+ init_nat_k (&kv, ip->dst_address, port, 0, proto);
if (!clib_bihash_search_8_8
(&sm->static_mapping_by_external, &kv, &value))
{
static u32
nat_calc_bihash_buckets (u32 n_elts)
{
- return 1 << (max_log2 (n_elts >> 1) + 1);
+ n_elts = n_elts / 2.5;
+ u64 lower_pow2 = 1;
+ while (lower_pow2 * 2 < n_elts)
+ {
+ lower_pow2 = 2 * lower_pow2;
+ }
+ u64 upper_pow2 = 2 * lower_pow2;
+ if ((upper_pow2 - n_elts) < (n_elts - lower_pow2))
+ {
+ if (upper_pow2 <= UINT32_MAX)
+ {
+ return upper_pow2;
+ }
+ }
+ return lower_pow2;
}
-static u32
-nat_calc_bihash_memory (u32 n_buckets, uword kv_size)
+u32
+nat44_get_max_session_limit ()
+{
+ snat_main_t *sm = &snat_main;
+ u32 max_limit = 0, len = 0;
+
+ for (; len < vec_len (sm->max_translations_per_fib); len++)
+ {
+ if (max_limit < sm->max_translations_per_fib[len])
+ max_limit = sm->max_translations_per_fib[len];
+ }
+ return max_limit;
+}
+
+int
+nat44_set_session_limit (u32 session_limit, u32 vrf_id)
{
- return n_buckets * (8 + kv_size * 4);
+ snat_main_t *sm = &snat_main;
+ u32 fib_index = fib_table_find (FIB_PROTOCOL_IP4, vrf_id);
+ u32 len = vec_len (sm->max_translations_per_fib);
+
+ if (len <= fib_index)
+ {
+ vec_validate (sm->max_translations_per_fib, fib_index + 1);
+
+ for (; len < vec_len (sm->max_translations_per_fib); len++)
+ sm->max_translations_per_fib[len] = sm->max_translations_per_thread;
+ }
+
+ sm->max_translations_per_fib[fib_index] = session_limit;
+ return 0;
+}
+
+int
+nat44_update_session_limit (u32 session_limit, u32 vrf_id)
+{
+ snat_main_t *sm = &snat_main;
+
+ if (nat44_set_session_limit (session_limit, vrf_id))
+ return 1;
+ sm->max_translations_per_thread = nat44_get_max_session_limit ();
+
+ sm->translation_buckets =
+ nat_calc_bihash_buckets (sm->max_translations_per_thread);
+
+ nat44_sessions_clear ();
+ return 0;
}
void
if (sm->endpoint_dependent)
{
clib_bihash_init_16_8 (&tsm->in2out_ed, "in2out-ed",
- sm->translation_buckets,
- sm->translation_memory_size);
+ sm->translation_buckets, 0);
clib_bihash_set_kvp_format_fn_16_8 (&tsm->in2out_ed,
format_ed_session_kvp);
+
}
else
{
- clib_bihash_init_8_8 (&tsm->in2out, "in2out",
- sm->translation_buckets,
- sm->translation_memory_size);
+ clib_bihash_init_8_8 (&tsm->in2out, "in2out", sm->translation_buckets,
+ 0);
clib_bihash_set_kvp_format_fn_8_8 (&tsm->in2out, format_session_kvp);
- clib_bihash_init_8_8 (&tsm->out2in, "out2in",
- sm->translation_buckets,
- sm->translation_memory_size);
+ clib_bihash_init_8_8 (&tsm->out2in, "out2in", sm->translation_buckets,
+ 0);
clib_bihash_set_kvp_format_fn_8_8 (&tsm->out2in, format_session_kvp);
}
- // TODO: resolve static mappings (put only to !ED)
+ // TODO: ED nat is not using these
+ // before removal large refactor required
pool_alloc (tsm->list_pool, sm->max_translations_per_thread);
- clib_bihash_init_8_8 (&tsm->user_hash, "users", sm->user_buckets,
- sm->user_memory_size);
+ clib_bihash_init_8_8 (&tsm->user_hash, "users", sm->user_buckets, 0);
clib_bihash_set_kvp_format_fn_8_8 (&tsm->user_hash, format_user_kvp);
}
if (sm->endpoint_dependent)
{
clib_bihash_free_16_8 (&tsm->in2out_ed);
+ vec_free (tsm->per_vrf_sessions_vec);
}
else
{
{
clib_bihash_free_16_8 (&sm->out2in_ed);
clib_bihash_init_16_8 (&sm->out2in_ed, "out2in-ed",
- clib_max (1, sm->num_workers) *
- sm->translation_buckets,
- clib_max (1, sm->num_workers) *
- sm->translation_memory_size);
+ clib_max (1,
+ sm->num_workers) *
+ sm->translation_buckets, 0);
clib_bihash_set_kvp_format_fn_16_8 (&sm->out2in_ed,
format_ed_session_kvp);
}
/* *INDENT-ON* */
}
-static clib_error_t *
-snat_config (vlib_main_t * vm, unformat_input_t * input)
-{
- snat_main_t *sm = &snat_main;
- snat_main_per_thread_data_t *tsm;
-
- u32 static_mapping_buckets = 1024;
- uword static_mapping_memory_size = 64 << 20;
-
- u32 nat64_bib_buckets = 1024;
- u32 nat64_bib_memory_size = 128 << 20;
-
- u32 nat64_st_buckets = 2048;
- uword nat64_st_memory_size = 256 << 20;
-
- u32 max_users_per_thread = 0;
- u32 user_memory_size = 0;
- u32 max_translations_per_thread = 0;
- u32 translation_memory_size = 0;
-
- u32 max_translations_per_user = ~0;
-
- u32 outside_vrf_id = 0;
- u32 outside_ip6_vrf_id = 0;
- u32 inside_vrf_id = 0;
- u8 static_mapping_only = 0;
- u8 static_mapping_connection_tracking = 0;
-
- u32 udp_timeout = SNAT_UDP_TIMEOUT;
- u32 icmp_timeout = SNAT_ICMP_TIMEOUT;
- u32 tcp_transitory_timeout = SNAT_TCP_TRANSITORY_TIMEOUT;
- u32 tcp_established_timeout = SNAT_TCP_ESTABLISHED_TIMEOUT;
-
- sm->deterministic = 0;
- sm->out2in_dpo = 0;
- sm->endpoint_dependent = 0;
-
- while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
- {
- if (unformat
- (input, "max translations per thread %d",
- &max_translations_per_thread))
- ;
- else if (unformat (input, "udp timeout %d", &udp_timeout))
- ;
- else if (unformat (input, "icmp timeout %d", &icmp_timeout))
- ;
- else if (unformat (input, "tcp transitory timeout %d",
- &tcp_transitory_timeout));
- else if (unformat (input, "tcp established timeout %d",
- &tcp_established_timeout));
- else if (unformat (input, "translation hash memory %d",
- &translation_memory_size));
- else
- if (unformat
- (input, "max users per thread %d", &max_users_per_thread))
- ;
- else if (unformat (input, "user hash memory %d", &user_memory_size))
- ;
- else if (unformat (input, "max translations per user %d",
- &max_translations_per_user))
- ;
- else if (unformat (input, "outside VRF id %d", &outside_vrf_id))
- ;
- else if (unformat (input, "outside ip6 VRF id %d", &outside_ip6_vrf_id))
- ;
- else if (unformat (input, "inside VRF id %d", &inside_vrf_id))
- ;
- else if (unformat (input, "static mapping only"))
- {
- static_mapping_only = 1;
- if (unformat (input, "connection tracking"))
- static_mapping_connection_tracking = 1;
- }
- else if (unformat (input, "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, "endpoint-dependent"))
- sm->endpoint_dependent = 1;
- else
- return clib_error_return (0, "unknown input '%U'",
- format_unformat_error, input);
- }
-
- if (sm->deterministic && sm->endpoint_dependent)
- return clib_error_return (0,
- "deterministic and endpoint-dependent modes are mutually exclusive");
-
- if (static_mapping_only && (sm->deterministic || sm->endpoint_dependent))
- return clib_error_return (0,
- "static mapping only mode available only for simple nat");
-
- if (sm->out2in_dpo && (sm->deterministic || sm->endpoint_dependent))
- return clib_error_return (0,
- "out2in dpo mode available only for simple nat");
- if (sm->endpoint_dependent && max_users_per_thread > 0)
- {
- return clib_error_return (0,
- "setting 'max users' in endpoint-dependent mode is not supported");
- }
-
- if (sm->endpoint_dependent && max_translations_per_user != ~0)
- {
- return clib_error_return (0,
- "setting 'max translations per user' in endpoint-dependent mode is not supported");
- }
-
- /* optionally configurable timeouts for testing purposes */
- sm->udp_timeout = udp_timeout;
- sm->tcp_transitory_timeout = tcp_transitory_timeout;
- sm->tcp_established_timeout = tcp_established_timeout;
- sm->icmp_timeout = icmp_timeout;
-
- if (0 == max_users_per_thread)
- {
- max_users_per_thread = 1024;
- }
- sm->max_users_per_thread = max_users_per_thread;
- sm->user_buckets = nat_calc_bihash_buckets (sm->max_users_per_thread);
-
- if (0 == max_translations_per_thread)
- {
- // default value based on legacy setting of load factor 10 * default
- // translation buckets 1024
- max_translations_per_thread = 10 * 1024;
- }
- sm->max_translations_per_thread = max_translations_per_thread;
- sm->translation_buckets =
- nat_calc_bihash_buckets (sm->max_translations_per_thread);
- if (0 == translation_memory_size)
- {
- translation_memory_size =
- nat_calc_bihash_memory (sm->translation_buckets,
- sizeof (clib_bihash_16_8_t));
- }
- sm->translation_memory_size = translation_memory_size;
- if (0 == user_memory_size)
- {
- user_memory_size =
- nat_calc_bihash_memory (sm->max_users_per_thread,
- sizeof (clib_bihash_8_8_t));
- }
- sm->user_memory_size = user_memory_size;
- vec_add1 (sm->max_translations_per_fib, sm->max_translations_per_thread);
-
- sm->max_translations_per_user = max_translations_per_user == ~0 ?
- sm->max_translations_per_thread : 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,
- nat_fib_src_hi);
- sm->inside_vrf_id = inside_vrf_id;
- sm->inside_fib_index = fib_table_find_or_create_and_lock (FIB_PROTOCOL_IP4,
- inside_vrf_id,
- nat_fib_src_hi);
- sm->static_mapping_only = static_mapping_only;
- sm->static_mapping_connection_tracking = static_mapping_connection_tracking;
-
- 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->in2out_output_node_index = ~0;
- sm->out2in_node_index = snat_det_out2in_node.index;
- sm->icmp_match_in2out_cb = icmp_match_in2out_det;
- sm->icmp_match_out2in_cb = icmp_match_out2in_det;
- }
- else
- {
- if (sm->endpoint_dependent)
- {
- sm->worker_in2out_cb = nat44_ed_get_worker_in2out_cb;
- sm->worker_out2in_cb = nat44_ed_get_worker_out2in_cb;
-
- sm->in2out_node_index = nat44_ed_in2out_node.index;
- sm->in2out_output_node_index = nat44_ed_in2out_output_node.index;
- sm->out2in_node_index = nat44_ed_out2in_node.index;
-
- sm->icmp_match_in2out_cb = icmp_match_in2out_ed;
- sm->icmp_match_out2in_cb = icmp_match_out2in_ed;
- nat_affinity_init (vm);
- nat_ha_init (vm, nat_ha_sadd_ed_cb, nat_ha_sdel_ed_cb,
- nat_ha_sref_ed_cb);
- clib_bihash_init_16_8 (&sm->out2in_ed, "out2in-ed",
- clib_max (1, sm->num_workers) *
- sm->translation_buckets,
- clib_max (1, sm->num_workers) *
- sm->translation_memory_size);
- clib_bihash_set_kvp_format_fn_16_8 (&sm->out2in_ed,
- format_ed_session_kvp);
- }
- else
- {
- sm->worker_in2out_cb = snat_get_worker_in2out_cb;
- sm->worker_out2in_cb = snat_get_worker_out2in_cb;
-
- sm->in2out_node_index = snat_in2out_node.index;
- sm->in2out_output_node_index = snat_in2out_output_node.index;
- sm->out2in_node_index = snat_out2in_node.index;
-
- sm->icmp_match_in2out_cb = icmp_match_in2out_slow;
- sm->icmp_match_out2in_cb = icmp_match_out2in_slow;
- nat_ha_init (vm, nat_ha_sadd_cb, nat_ha_sdel_cb, nat_ha_sref_cb);
- }
- if (!static_mapping_only ||
- (static_mapping_only && static_mapping_connection_tracking))
- {
- /* *INDENT-OFF* */
- vec_foreach (tsm, sm->per_thread_data)
- {
- nat44_db_init (tsm);
- }
- /* *INDENT-ON* */
- }
- else
- {
- sm->icmp_match_in2out_cb = icmp_match_in2out_fast;
- sm->icmp_match_out2in_cb = icmp_match_out2in_fast;
- }
- clib_bihash_init_8_8 (&sm->static_mapping_by_local,
- "static_mapping_by_local", static_mapping_buckets,
- static_mapping_memory_size);
- clib_bihash_set_kvp_format_fn_8_8 (&sm->static_mapping_by_local,
- format_static_mapping_kvp);
-
- clib_bihash_init_8_8 (&sm->static_mapping_by_external,
- "static_mapping_by_external",
- static_mapping_buckets,
- static_mapping_memory_size);
- clib_bihash_set_kvp_format_fn_8_8 (&sm->static_mapping_by_external,
- format_static_mapping_kvp);
- }
-
- return 0;
-}
-
-VLIB_CONFIG_FUNCTION (snat_config, "nat");
-
static void
nat_ip4_add_del_addr_only_sm_cb (ip4_main_t * im,
uword opaque,
int i, rv;
ip4_address_t l_addr;
+ if (!sm->enabled)
+ return;
+
for (i = 0; i < vec_len (sm->to_resolve); i++)
{
rp = sm->to_resolve + i;
rp->vrf_id,
rp->addr_only, ~0 /* sw_if_index */ ,
rp->proto, !is_delete, rp->twice_nat,
- rp->out2in_only, rp->tag, rp->identity_nat);
+ rp->out2in_only, rp->tag, rp->identity_nat,
+ rp->pool_addr, rp->exact);
if (rv)
nat_elog_notice_X1 ("snat_add_static_mapping returned %d", "i4", rv);
}
u8 twice_nat = 0;
snat_address_t *addresses = sm->addresses;
+ if (!sm->enabled)
+ return;
+
for (i = 0; i < vec_len (sm->auto_add_sw_if_indices); i++)
{
if (sw_if_index == sm->auto_add_sw_if_indices[i])
rp->proto,
rp->is_add, rp->twice_nat,
rp->out2in_only, rp->tag,
- rp->identity_nat);
+ rp->identity_nat,
+ rp->pool_addr, rp->exact);
if (rv)
nat_elog_notice_X1 ("snat_add_static_mapping returned %d",
"i4", rv);
[NAT_NEXT_ICMP_ERROR] = "ip4-icmp-error",
[NAT_NEXT_IN2OUT_ED_FAST_PATH] = "nat44-ed-in2out",
[NAT_NEXT_IN2OUT_ED_SLOW_PATH] = "nat44-ed-in2out-slowpath",
+ [NAT_NEXT_IN2OUT_ED_OUTPUT_FAST_PATH] = "nat44-ed-in2out-output",
[NAT_NEXT_IN2OUT_ED_OUTPUT_SLOW_PATH] = "nat44-ed-in2out-output-slowpath",
[NAT_NEXT_OUT2IN_ED_FAST_PATH] = "nat44-ed-out2in",
[NAT_NEXT_OUT2IN_ED_SLOW_PATH] = "nat44-ed-out2in-slowpath",
Code Review / vpp.git / blobdiff