#include <nat/nat_det.h>
#include <nat/nat64.h>
#include <nat/nat66.h>
-#include <nat/dslite.h>
-#include <nat/nat_reass.h>
+#include <nat/nat_inlines.h>
+#include <nat/nat44/inlines.h>
+#include <nat/nat_affinity.h>
+#include <nat/nat_syslog.h>
+#include <nat/nat_ha.h>
#include <vnet/fib/fib_table.h>
#include <vnet/fib/ip4_fib.h>
+#include <vnet/ip/reass/ip4_sv_reass.h>
+#include <vppinfra/bihash_16_8.h>
#include <vpp/app/version.h>
snat_main_t snat_main;
+fib_source_t nat_fib_src_hi;
+fib_source_t nat_fib_src_low;
+/* *INDENT-OFF* */
/* Hook up input features */
+VNET_FEATURE_INIT (nat_pre_in2out, static) = {
+ .arc_name = "ip4-unicast",
+ .node_name = "nat-pre-in2out",
+ .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa",
+ "ip4-sv-reassembly-feature"),
+};
+VNET_FEATURE_INIT (nat_pre_out2in, static) = {
+ .arc_name = "ip4-unicast",
+ .node_name = "nat-pre-out2in",
+ .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa",
+ "ip4-dhcp-client-detect",
+ "ip4-sv-reassembly-feature"),
+};
+VNET_FEATURE_INIT (snat_in2out_worker_handoff, static) = {
+ .arc_name = "ip4-unicast",
+ .node_name = "nat44-in2out-worker-handoff",
+ .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa"),
+};
+VNET_FEATURE_INIT (snat_out2in_worker_handoff, static) = {
+ .arc_name = "ip4-unicast",
+ .node_name = "nat44-out2in-worker-handoff",
+ .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa",
+ "ip4-dhcp-client-detect"),
+};
VNET_FEATURE_INIT (ip4_snat_in2out, static) = {
.arc_name = "ip4-unicast",
.node_name = "nat44-in2out",
- .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa"),
+ .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa","ip4-sv-reassembly-feature"),
};
VNET_FEATURE_INIT (ip4_snat_out2in, static) = {
.arc_name = "ip4-unicast",
.node_name = "nat44-out2in",
- .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa"),
+ .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa","ip4-sv-reassembly-feature",
+ "ip4-dhcp-client-detect"),
};
VNET_FEATURE_INIT (ip4_nat_classify, static) = {
.arc_name = "ip4-unicast",
.node_name = "nat44-classify",
- .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa"),
+ .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"),
+ .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"),
+ .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"),
+ .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa","ip4-sv-reassembly-feature"),
};
-VNET_FEATURE_INIT (ip4_snat_in2out_worker_handoff, static) = {
+VNET_FEATURE_INIT (ip4_nat44_ed_in2out, static) = {
.arc_name = "ip4-unicast",
- .node_name = "nat44-in2out-worker-handoff",
- .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa"),
+ .node_name = "nat44-ed-in2out",
+ .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa","ip4-sv-reassembly-feature"),
};
-VNET_FEATURE_INIT (ip4_snat_out2in_worker_handoff, static) = {
+VNET_FEATURE_INIT (ip4_nat44_ed_out2in, static) = {
.arc_name = "ip4-unicast",
- .node_name = "nat44-out2in-worker-handoff",
- .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa"),
+ .node_name = "nat44-ed-out2in",
+ .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa","ip4-sv-reassembly-feature",
+ "ip4-dhcp-client-detect"),
+};
+VNET_FEATURE_INIT (ip4_nat44_ed_classify, static) = {
+ .arc_name = "ip4-unicast",
+ .node_name = "nat44-ed-classify",
+ .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa","ip4-sv-reassembly-feature"),
};
VNET_FEATURE_INIT (ip4_nat_handoff_classify, static) = {
.arc_name = "ip4-unicast",
.node_name = "nat44-handoff-classify",
- .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa"),
+ .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa","ip4-sv-reassembly-feature"),
};
VNET_FEATURE_INIT (ip4_snat_in2out_fast, static) = {
.arc_name = "ip4-unicast",
.node_name = "nat44-in2out-fast",
- .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa"),
+ .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa","ip4-sv-reassembly-feature"),
};
VNET_FEATURE_INIT (ip4_snat_out2in_fast, static) = {
.arc_name = "ip4-unicast",
.node_name = "nat44-out2in-fast",
- .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa"),
+ .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa","ip4-sv-reassembly-feature",
+ "ip4-dhcp-client-detect"),
};
VNET_FEATURE_INIT (ip4_snat_hairpin_dst, static) = {
.arc_name = "ip4-unicast",
.node_name = "nat44-hairpin-dst",
- .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa"),
+ .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa","ip4-sv-reassembly-feature"),
+};
+VNET_FEATURE_INIT (ip4_nat44_ed_hairpin_dst, static) = {
+ .arc_name = "ip4-unicast",
+ .node_name = "nat44-ed-hairpin-dst",
+ .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa","ip4-sv-reassembly-feature"),
};
/* Hook up output features */
VNET_FEATURE_INIT (ip4_snat_in2out_output, static) = {
.arc_name = "ip4-output",
.node_name = "nat44-in2out-output",
- .runs_after = VNET_FEATURES ("acl-plugin-out-ip4-fa"),
+ .runs_after = VNET_FEATURES ("acl-plugin-out-ip4-fa","ip4-sv-reassembly-output-feature"),
};
VNET_FEATURE_INIT (ip4_snat_in2out_output_worker_handoff, static) = {
.arc_name = "ip4-output",
.node_name = "nat44-in2out-output-worker-handoff",
- .runs_after = VNET_FEATURES ("acl-plugin-out-ip4-fa"),
+ .runs_after = VNET_FEATURES ("acl-plugin-out-ip4-fa","ip4-sv-reassembly-output-feature"),
};
VNET_FEATURE_INIT (ip4_snat_hairpin_src, static) = {
.arc_name = "ip4-output",
.node_name = "nat44-hairpin-src",
- .runs_after = VNET_FEATURES ("acl-plugin-out-ip4-fa"),
+ .runs_after = VNET_FEATURES ("acl-plugin-out-ip4-fa","ip4-sv-reassembly-output-feature"),
+};
+VNET_FEATURE_INIT (ip4_nat44_ed_in2out_output, static) = {
+ .arc_name = "ip4-output",
+ .node_name = "nat44-ed-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_hairpin_src, static) = {
+ .arc_name = "ip4-output",
+ .node_name = "nat44-ed-hairpin-src",
+ .runs_after = VNET_FEATURES ("ip4-sv-reassembly-output-feature"),
+ .runs_before = VNET_FEATURES ("acl-plugin-out-ip4-fa"),
};
/* Hook up ip4-local features */
.node_name = "nat44-hairpinning",
.runs_before = VNET_FEATURES("ip4-local-end-of-arc"),
};
+VNET_FEATURE_INIT (ip4_nat44_ed_hairpinning, static) =
+{
+ .arc_name = "ip4-local",
+ .node_name = "nat44-ed-hairpinning",
+ .runs_before = VNET_FEATURES("ip4-local-end-of-arc"),
+};
-/* *INDENT-OFF* */
VLIB_PLUGIN_REGISTER () = {
.version = VPP_BUILD_VER,
- .description = "Network Address Translation",
+ .description = "Network Address Translation (NAT)",
};
/* *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)
+nat_free_session_data (snat_main_t * sm, snat_session_t * s, u32 thread_index,
+ u8 is_ha)
{
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_fwd_bypass_session (s))
+ {
+ 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->in2out.port;
+ ed_key.r_port = s->ext_host_port;
+ }
+ ed_key.l_addr = s->in2out.addr;
+ ed_key.r_addr = s->ext_host_addr;
+ ed_key.fib_index = 0;
+ 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 (&tsm->in2out_ed, &ed_kv, 0))
+ nat_elog_warn ("in2out_ed key del failed");
+ return;
+ }
+
+ /* session lookup tables */
if (is_ed_session (s))
{
+ if (is_affinity_sessions (s))
+ nat_affinity_unlock (s->ext_host_addr, s->out2in.addr,
+ s->in2out.protocol, s->out2in.port);
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;
- }
+ {
+ 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_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");
-
+ if (clib_bihash_add_del_16_8 (&tsm->out2in_ed, &ed_kv, 0))
+ nat_elog_warn ("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;
+ 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_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 (clib_bihash_add_del_16_8 (&tsm->in2out_ed, &ed_kv, 0))
+ nat_elog_warn ("in2out_ed key del failed");
+
+ if (!is_ha)
+ nat_syslog_nat44_sdel (s->user_index, s->in2out.fib_index,
+ &s->in2out.addr, s->in2out.port,
+ &s->ext_host_nat_addr, s->ext_host_nat_port,
+ &s->out2in.addr, s->out2in.port,
+ &s->ext_host_addr, s->ext_host_port,
+ s->in2out.protocol, is_twice_nat_session (s));
+ }
+ else
+ {
+ kv.key = s->in2out.as_u64;
+ if (clib_bihash_add_del_8_8 (&tsm->in2out, &kv, 0))
+ nat_elog_warn ("in2out key del failed");
+ kv.key = s->out2in.as_u64;
+ if (clib_bihash_add_del_8_8 (&tsm->out2in, &kv, 0))
+ nat_elog_warn ("out2in key del failed");
+
+ if (!is_ha)
+ nat_syslog_nat44_apmdel (s->user_index, s->in2out.fib_index,
+ &s->in2out.addr, s->in2out.port,
+ &s->out2in.addr, s->out2in.port,
+ s->in2out.protocol);
}
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);
+ 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->in2out.protocol,
+ 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->out2in.protocol, s->out2in.fib_index,
+ thread_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;
- }
- }
+ key.protocol = s->in2out.protocol;
+ key.port = s->ext_host_nat_port;
+ key.addr.as_u32 = s->ext_host_nat_addr.as_u32;
+ snat_free_outside_address_and_port (sm->twice_nat_addresses,
+ thread_index, &key);
}
- if (is_ed_session (s))
+ if (snat_is_session_static (s))
+ return;
+
+ ed_bihash_kv_t bihash_key;
+ clib_memset (&bihash_key, 0, sizeof (bihash_key));
+ bihash_key.k.dst_address = s->ext_host_addr.as_u32;
+ bihash_key.k.dst_port = s->ext_host_port;
+ bihash_key.k.src_address = s->out2in.addr.as_u32;
+ bihash_key.k.src_port = s->out2in.port;
+ bihash_key.k.protocol = s->out2in.protocol;
+ clib_bihash_add_del_16_8 (&sm->ed_ext_ports, &bihash_key.kv,
+ 0 /* is_add */ );
+
+ snat_free_outside_address_and_port (sm->addresses, thread_index,
+ &s->out2in);
+}
+
+void
+nat44_free_session_data (snat_main_t * sm, snat_session_t * s,
+ u32 thread_index, u8 is_ha)
+{
+ snat_session_key_t key;
+ nat_ed_ses_key_t ed_key;
+ clib_bihash_kv_16_8_t ed_kv;
+ snat_main_per_thread_data_t *tsm =
+ vec_elt_at_index (sm->per_thread_data, thread_index);
+
+ if (is_fwd_bypass_session (s))
+ {
+ 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->in2out.port;
+ ed_key.r_port = s->ext_host_port;
+ }
+
+ ed_key.l_addr = s->in2out.addr;
+ ed_key.r_addr = s->ext_host_addr;
+ ed_key.fib_index = 0;
+ ed_kv.key[0] = ed_key.as_u64[0];
+ ed_kv.key[1] = ed_key.as_u64[1];
+
+ if (PREDICT_FALSE
+ (clib_bihash_add_del_16_8 (&tsm->in2out_ed, &ed_kv, 0)))
+ nat_elog_warn ("in2out_ed key del failed");
+ return;
+ }
+
+ /* session lookup tables */
+ if (is_affinity_sessions (s))
+ nat_affinity_unlock (s->ext_host_addr, s->out2in.addr,
+ s->in2out.protocol, s->out2in.port);
+ 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 (PREDICT_FALSE (clib_bihash_add_del_16_8 (&tsm->out2in_ed, &ed_kv, 0)))
+ nat_elog_warn ("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 (PREDICT_FALSE (clib_bihash_add_del_16_8 (&tsm->in2out_ed, &ed_kv, 0)))
+ nat_elog_warn ("in2out_ed key del failed");
+
+ if (!is_ha)
+ {
+ nat_syslog_nat44_sdel (s->user_index, s->in2out.fib_index,
+ &s->in2out.addr, s->in2out.port,
+ &s->ext_host_nat_addr, s->ext_host_nat_port,
+ &s->out2in.addr, s->out2in.port,
+ &s->ext_host_addr, s->ext_host_port,
+ s->in2out.protocol, is_twice_nat_session (s));
+ }
+
+ if (snat_is_unk_proto_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");
+ // is this correct ?
+ if (!is_ha)
+ {
+ snat_ipfix_logging_nat44_ses_delete (thread_index,
+ s->in2out.addr.as_u32,
+ s->out2in.addr.as_u32,
+ s->in2out.protocol,
+ 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->out2in.protocol, s->out2in.fib_index,
+ thread_index);
+ }
+
+ /* Twice NAT address and port for external host */
+ if (is_twice_nat_session (s))
+ {
+ key.protocol = s->in2out.protocol;
+ key.port = s->ext_host_nat_port;
+ key.addr.as_u32 = s->ext_host_nat_addr.as_u32;
+ snat_free_outside_address_and_port (sm->twice_nat_addresses,
+ thread_index, &key);
+ }
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);
+ ed_bihash_kv_t bihash_key;
+ clib_memset (&bihash_key, 0, sizeof (bihash_key));
+ bihash_key.k.dst_address = s->ext_host_addr.as_u32;
+ bihash_key.k.dst_port = s->ext_host_port;
+ bihash_key.k.src_address = s->out2in.addr.as_u32;
+ bihash_key.k.src_port = s->out2in.port;
+ bihash_key.k.protocol = s->out2in.protocol;
+ clib_bihash_add_del_16_8 (&sm->ed_ext_ports, &bihash_key.kv,
+ 0 /* is_add */ );
+
+ // should be called for every dynamic session
+ snat_free_outside_address_and_port (sm->addresses, thread_index,
+ &s->out2in);
}
+
snat_user_t *
-nat_user_get_or_create (snat_main_t *sm, ip4_address_t *addr, u32 fib_index,
- u32 thread_index)
+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;
+ dlist_elt_t *per_user_list_head_elt;
user_key.addr.as_u32 = addr->as_u32;
user_key.fib_index = fib_index;
{
/* no, make a new one */
pool_get (tsm->users, u);
- memset (u, 0, sizeof (*u));
+ clib_memset (u, 0, sizeof (*u));
+
+ u->min_session_timeout = 0;
+
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;
+ tsm->list_pool;
clib_dlist_init (tsm->list_pool, u->sessions_per_user_list_head_index);
/* add user */
if (clib_bihash_add_del_8_8 (&tsm->user_hash, &kv, 1))
- clib_warning ("user_hash keay add failed");
+ {
+ nat_elog_warn ("user_hash key add failed");
+ nat44_delete_user_with_no_session (sm, u, thread_index);
+ return NULL;
+ }
+
+ vlib_set_simple_counter (&sm->total_users, thread_index, 0,
+ pool_elts (tsm->users));
}
else
{
}
snat_session_t *
-nat_session_alloc_or_recycle (snat_main_t *sm, snat_user_t *u, u32 thread_index)
+nat_session_alloc_or_recycle (snat_main_t * sm, snat_user_t * u,
+ u32 thread_index, f64 now)
{
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;
+ 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);
+ 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);
+ 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);
+ 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;
+ nat_free_session_data (sm, s, thread_index, 0);
+ if (snat_is_session_static (s))
+ u->nstaticsessions--;
+ else
+ u->nsessions--;
s->flags = 0;
s->total_bytes = 0;
s->total_pkts = 0;
+ s->state = 0;
+ s->ext_host_addr.as_u32 = 0;
+ s->ext_host_port = 0;
+ s->ext_host_nat_addr.as_u32 = 0;
+ s->ext_host_nat_port = 0;
}
else
{
pool_get (tsm->sessions, s);
- memset (s, 0, sizeof (*s));
- s->outside_address_index = ~0;
+ clib_memset (s, 0, sizeof (*s));
/* 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 - 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);
+ s->per_user_list_head_index,
+ per_user_translation_list_elt - tsm->list_pool);
+
+ dlist_elt_t *global_lru_list_elt;
+ pool_get (tsm->global_lru_pool, global_lru_list_elt);
+ global_lru_list_elt->value = s - tsm->sessions;
+ s->global_lru_index = global_lru_list_elt - tsm->global_lru_pool;
+ clib_dlist_addtail (tsm->global_lru_pool, tsm->global_lru_head_index,
+ s->global_lru_index);
+ s->last_lru_update = now;
+
+ s->user_index = u - tsm->users;
+ vlib_set_simple_counter (&sm->total_sessions, thread_index, 0,
+ pool_elts (tsm->sessions));
}
+ s->ha_last_refreshed = now;
+
return s;
}
-static inline uword
-nat44_classify_node_fn_inline (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame)
+snat_session_t *
+nat_ed_session_alloc (snat_main_t * sm, snat_user_t * u, u32 thread_index,
+ f64 now)
{
- 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;
+ snat_session_t *s = NULL;
+ snat_main_per_thread_data_t *tsm = &sm->per_thread_data[thread_index];
- b0 = vlib_get_buffer (vm, bi0);
- ip0 = vlib_buffer_get_current (b0);
+ dlist_elt_t *oldest_elt;
+ u64 sess_timeout_time;
+ u32 oldest_index;
- vec_foreach (ap, sm->addresses)
- {
- if (ip0->dst_address.as_u32 == ap->addr.as_u32)
- {
- next0 = NAT44_CLASSIFY_NEXT_OUT2IN;
- goto enqueue0;
- }
- }
+ // no sessions
+ if (PREDICT_FALSE (!(u->nsessions) && !(u->nstaticsessions)))
+ goto alloc_new;
- 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;
- goto enqueue0;
- }
- udp_header_t * udp0 = ip4_next_header (ip0);
- m_key0.port = clib_net_to_host_u16 (udp0->dst_port);
- m_key0.protocol = ip_proto_to_snat_proto (ip0->protocol);
- kv0.key = m_key0.as_u64;
- if (!clib_bihash_search_8_8 (&sm->static_mapping_by_external, &kv0, &value0))
- next0 = NAT44_CLASSIFY_NEXT_OUT2IN;
- }
+ // no free sessions
+ if (PREDICT_FALSE
+ ((u->nsessions + u->nstaticsessions) >= sm->max_translations_per_user))
+ {
+ if (nat44_max_translations_per_user_cleanup (u, thread_index, now))
+ goto alloc_new;
+
+ nat_elog_addr (SNAT_LOG_WARNING, "[warn] max translations per user",
+ clib_net_to_host_u32 (u->addr.as_u32));
+ snat_ipfix_logging_max_entries_per_user (thread_index,
+ sm->max_translations_per_user,
+ u->addr.as_u32);
+ return 0;
+ }
- enqueue0:
- /* 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);
- }
+ /* first try to reuse an expired session from this ip */
+ oldest_index =
+ clib_dlist_remove_head (tsm->list_pool,
+ u->sessions_per_user_list_head_index);
+ oldest_elt = pool_elt_at_index (tsm->list_pool, oldest_index);
+ s = pool_elt_at_index (tsm->sessions, oldest_elt->value);
- vlib_put_next_frame (vm, node, next_index, n_left_to_next);
+ sess_timeout_time = s->last_heard + (f64) nat44_session_get_timeout (sm, s);
+ if (now >= sess_timeout_time ||
+ (s->tcp_close_timestamp && now >= s->tcp_close_timestamp))
+ {
+ // reuse old session
+ clib_dlist_addtail (tsm->list_pool,
+ u->sessions_per_user_list_head_index, oldest_index);
+ s = nat44_session_reuse_old (sm, u, s, thread_index, now);
+ s->last_lru_update = now;
+ }
+ else
+ {
+ clib_dlist_addhead (tsm->list_pool,
+ u->sessions_per_user_list_head_index, oldest_index);
+ s = NULL;
}
- return frame->n_vectors;
+alloc_new:
+ /* try to free an expired session from global LRU list */
+ if (!s)
+ {
+ oldest_index = clib_dlist_remove_head (tsm->global_lru_pool,
+ tsm->global_lru_head_index);
+ if (~0 != oldest_index)
+ {
+ oldest_elt = pool_elt_at_index (tsm->global_lru_pool, oldest_index);
+ s = pool_elt_at_index (tsm->sessions, oldest_elt->value);
+
+ sess_timeout_time =
+ s->last_heard + (f64) nat44_session_get_timeout (sm, s);
+ if (now >= sess_timeout_time
+ || (s->tcp_close_timestamp && now >= s->tcp_close_timestamp))
+ {
+ nat_free_session_data (sm, s, thread_index, 0);
+ nat44_ed_delete_session (sm, s, thread_index, 0);
+ }
+ else
+ {
+ clib_dlist_addhead (tsm->global_lru_pool,
+ tsm->global_lru_head_index, oldest_index);
+ }
+ s = NULL;
+ }
+ }
+ if (!s)
+ {
+ s = nat44_session_alloc_new (tsm, u, now);
+ vlib_set_simple_counter (&sm->total_sessions, thread_index, 0,
+ pool_elts (tsm->sessions));
+ }
+ return s;
}
-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.
- *
- * Add the external NAT address to the FIB as receive entries. This ensures
- * that VPP will reply to ARP for this address and we don't need to enable
- * proxy ARP on the outside interface.
- *
- * @param addr IPv4 address.
- * @param plen address prefix length
- * @param sw_if_index Interface.
- * @param is_add If 0 delete, otherwise add.
- */
void
snat_add_del_addr_to_fib (ip4_address_t * addr, u8 p_len, u32 sw_if_index,
- int is_add)
+ int is_add)
{
fib_prefix_t prefix = {
.fp_len = p_len,
.fp_proto = FIB_PROTOCOL_IP4,
.fp_addr = {
- .ip4.as_u32 = addr->as_u32,
- },
+ .ip4.as_u32 = addr->as_u32,
+ },
};
- u32 fib_index = ip4_fib_table_get_index_for_sw_if_index(sw_if_index);
+ u32 fib_index = ip4_fib_table_get_index_for_sw_if_index (sw_if_index);
if (is_add)
- fib_table_entry_update_one_path(fib_index,
- &prefix,
- FIB_SOURCE_PLUGIN_HI,
- (FIB_ENTRY_FLAG_CONNECTED |
- FIB_ENTRY_FLAG_LOCAL |
- FIB_ENTRY_FLAG_EXCLUSIVE),
- DPO_PROTO_IP4,
- NULL,
- sw_if_index,
- ~0,
- 1,
- NULL,
- FIB_ROUTE_PATH_FLAG_NONE);
+ fib_table_entry_update_one_path (fib_index,
+ &prefix,
+ nat_fib_src_low,
+ (FIB_ENTRY_FLAG_CONNECTED |
+ FIB_ENTRY_FLAG_LOCAL |
+ FIB_ENTRY_FLAG_EXCLUSIVE),
+ DPO_PROTO_IP4,
+ NULL,
+ sw_if_index,
+ ~0, 1, NULL, FIB_ROUTE_PATH_FLAG_NONE);
else
- fib_table_entry_delete(fib_index,
- &prefix,
- FIB_SOURCE_PLUGIN_HI);
+ fib_table_entry_delete (fib_index, &prefix, nat_fib_src_low);
}
-void snat_add_address (snat_main_t *sm, ip4_address_t *addr, u32 vrf_id,
- u8 twice_nat)
+int
+snat_add_address (snat_main_t * sm, ip4_address_t * addr, u32 vrf_id,
+ u8 twice_nat)
{
- snat_address_t * ap;
+ snat_address_t *ap;
snat_interface_t *i;
vlib_thread_main_t *tm = vlib_get_thread_main ();
+ if (twice_nat && !sm->endpoint_dependent)
+ return VNET_API_ERROR_FEATURE_DISABLED;
+
/* 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;
+ return VNET_API_ERROR_VALUE_EXIST;
}
+ /* *INDENT-ON* */
if (twice_nat)
vec_add2 (sm->twice_nat_addresses, ap, 1);
if (vrf_id != ~0)
ap->fib_index =
fib_table_find_or_create_and_lock (FIB_PROTOCOL_IP4, vrf_id,
- FIB_SOURCE_PLUGIN_HI);
+ nat_fib_src_low);
else
ap->fib_index = ~0;
#define _(N, i, n, s) \
- clib_bitmap_alloc (ap->busy_##n##_port_bitmap, 65535); \
+ 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_snat_protocol
#undef _
-
- if (twice_nat)
- return;
+ if (twice_nat)
+ return 0;
/* Add external address to FIB */
+ /* *INDENT-OFF* */
pool_foreach (i, sm->interfaces,
({
if (nat_interface_is_inside(i) || sm->out2in_dpo)
snat_add_del_addr_to_fib(addr, 32, i->sw_if_index, 1);
break;
}));
+ /* *INDENT-ON* */
+
+ return 0;
}
-static int is_snat_address_used_in_static_mapping (snat_main_t *sm,
- ip4_address_t addr)
+static int
+is_snat_address_used_in_static_mapping (snat_main_t * sm, ip4_address_t addr)
{
snat_static_mapping_t *m;
+ /* *INDENT-OFF* */
pool_foreach (m, sm->static_mappings,
({
+ if (is_addr_only_static_mapping (m) ||
+ is_out2in_only_static_mapping (m) ||
+ is_identity_static_mapping (m))
+ continue;
if (m->external_addr.as_u32 == addr.as_u32)
return 1;
}));
+ /* *INDENT-ON* */
return 0;
}
-void increment_v4_address (ip4_address_t * a)
-{
- u32 v;
-
- v = clib_net_to_host_u32(a->as_u32) + 1;
- a->as_u32 = clib_host_to_net_u32(v);
-}
-
static void
snat_add_static_mapping_when_resolved (snat_main_t * sm,
- ip4_address_t l_addr,
- u16 l_port,
- u32 sw_if_index,
- u16 e_port,
- u32 vrf_id,
- snat_protocol_t proto,
- int addr_only,
- int is_add,
- u8 * tag)
+ ip4_address_t l_addr,
+ u16 l_port,
+ u32 sw_if_index,
+ u16 e_port,
+ u32 vrf_id,
+ snat_protocol_t proto,
+ int addr_only, int is_add, u8 * tag,
+ int twice_nat, int out2in_only,
+ int identity_nat)
{
snat_static_map_resolve_t *rp;
rp->proto = proto;
rp->addr_only = addr_only;
rp->is_add = is_add;
+ rp->twice_nat = twice_nat;
+ rp->out2in_only = out2in_only;
+ rp->identity_nat = identity_nat;
rp->tag = vec_dup (tag);
}
-/**
- * @brief Add static mapping.
- *
- * Create static mapping between local addr+port and external addr+port.
- *
- * @param l_addr Local IPv4 address.
- * @param e_addr External IPv4 address.
- * @param l_port Local port number.
- * @param e_port External port number.
- * @param vrf_id VRF ID.
- * @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.
- * @param out2in_only If 1 rule match only out2in direction
- * @param tag - opaque string tag
- *
- * @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,
- u8 twice_nat, u8 out2in_only, u8 * tag)
+static u32
+get_thread_idx_by_port (u16 e_port)
{
- snat_main_t * sm = &snat_main;
+ snat_main_t *sm = &snat_main;
+ u32 thread_idx = sm->num_workers;
+ if (sm->num_workers > 1)
+ {
+ thread_idx =
+ sm->first_worker_index +
+ sm->workers[(e_port - 1024) / sm->port_per_thread];
+ }
+ return thread_idx;
+}
+
+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,
+ twice_nat_type_t twice_nat, u8 out2in_only, u8 * tag,
+ u8 identity_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;
snat_address_t *a = 0;
u32 fib_index = ~0;
- uword * p;
snat_interface_t *interface;
int i;
snat_main_per_thread_data_t *tsm;
snat_user_key_t u_key;
snat_user_t *u;
- dlist_elt_t * head, * elt;
+ dlist_elt_t *head, *elt;
u32 elt_index, head_index;
u32 ses_index;
u64 user_index;
- snat_session_t * s;
+ snat_session_t *s;
+ snat_static_map_resolve_t *rp, *rp_match = 0;
+ nat44_lb_addr_port_t *local;
+ u32 find = ~0;
+
+ if (!sm->endpoint_dependent)
+ {
+ if (twice_nat || out2in_only)
+ return VNET_API_ERROR_FEATURE_DISABLED;
+ }
/* If the external address is a specific interface address */
if (sw_if_index != ~0)
{
- ip4_address_t * first_int_addr;
- snat_static_map_resolve_t *rp, *rp_match = 0;
+ ip4_address_t *first_int_addr;
for (i = 0; i < vec_len (sm->to_resolve); i++)
- {
- rp = sm->to_resolve + i;
- if (rp->sw_if_index != sw_if_index &&
- rp->l_addr.as_u32 != l_addr.as_u32 &&
- rp->vrf_id != vrf_id && rp->addr_only != addr_only)
- continue;
-
- if (!addr_only)
- {
- if (rp->l_port != l_port && rp->e_port != e_port && rp->proto != proto)
- continue;
- }
-
- rp_match = rp;
- break;
- }
+ {
+ rp = sm->to_resolve + i;
+ if (rp->sw_if_index != sw_if_index ||
+ rp->l_addr.as_u32 != l_addr.as_u32 ||
+ rp->vrf_id != vrf_id || rp->addr_only != addr_only)
+ continue;
+
+ if (!addr_only)
+ {
+ if ((rp->l_port != l_port && rp->e_port != e_port)
+ || rp->proto != proto)
+ continue;
+ }
+
+ rp_match = rp;
+ break;
+ }
/* Might be already set... */
first_int_addr = ip4_interface_first_address
- (sm->ip4_main, sw_if_index, 0 /* just want the address*/);
+ (sm->ip4_main, sw_if_index, 0 /* just want the address */ );
if (is_add)
- {
- if (rp_match)
- return VNET_API_ERROR_VALUE_EXIST;
-
- /* DHCP resolution required? */
- if (first_int_addr == 0)
- {
- snat_add_static_mapping_when_resolved
- (sm, l_addr, l_port, sw_if_index, e_port, vrf_id, proto,
- addr_only, is_add, tag);
- 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;
- }
- }
+ {
+ if (rp_match)
+ return VNET_API_ERROR_VALUE_EXIST;
+
+ snat_add_static_mapping_when_resolved
+ (sm, l_addr, l_port, sw_if_index, e_port, vrf_id, proto,
+ addr_only, is_add, tag, twice_nat, out2in_only, identity_nat);
+
+ /* DHCP resolution required? */
+ if (first_int_addr == 0)
+ {
+ return 0;
+ }
+ else
+ {
+ e_addr.as_u32 = first_int_addr->as_u32;
+ /* Identity mapping? */
+ if (l_addr.as_u32 == 0)
+ l_addr.as_u32 = e_addr.as_u32;
+ }
+ }
else
- {
- if (!rp_match)
- return VNET_API_ERROR_NO_SUCH_ENTRY;
-
- vec_del1 (sm->to_resolve, i);
-
- if (first_int_addr)
- {
- e_addr.as_u32 = first_int_addr->as_u32;
- /* Identity mapping? */
- if (l_addr.as_u32 == 0)
- l_addr.as_u32 = e_addr.as_u32;
- }
- else
- return 0;
- }
+ {
+ if (!rp_match)
+ return VNET_API_ERROR_NO_SUCH_ENTRY;
+
+ vec_del1 (sm->to_resolve, i);
+
+ if (first_int_addr)
+ {
+ e_addr.as_u32 = first_int_addr->as_u32;
+ /* Identity mapping? */
+ if (l_addr.as_u32 == 0)
+ l_addr.as_u32 = e_addr.as_u32;
+ }
+ else
+ return 0;
+ }
}
m_key.addr = e_addr;
m_key.port = addr_only ? 0 : e_port;
m_key.protocol = addr_only ? 0 : proto;
- m_key.fib_index = sm->outside_fib_index;
+ m_key.fib_index = 0;
kv.key = m_key.as_u64;
if (clib_bihash_search_8_8 (&sm->static_mapping_by_external, &kv, &value))
m = 0;
if (is_add)
{
if (m)
- return VNET_API_ERROR_VALUE_EXIST;
+ {
+ if (is_identity_static_mapping (m))
+ {
+ /* *INDENT-OFF* */
+ pool_foreach (local, m->locals,
+ ({
+ if (local->vrf_id == vrf_id)
+ return VNET_API_ERROR_VALUE_EXIST;
+ }));
+ /* *INDENT-ON* */
+ pool_get (m->locals, local);
+ local->vrf_id = vrf_id;
+ local->fib_index =
+ fib_table_find_or_create_and_lock (FIB_PROTOCOL_IP4, vrf_id,
+ nat_fib_src_low);
+ m_key.addr = m->local_addr;
+ m_key.port = m->local_port;
+ m_key.protocol = m->proto;
+ m_key.fib_index = local->fib_index;
+ 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);
+ return 0;
+ }
+ else
+ return VNET_API_ERROR_VALUE_EXIST;
+ }
if (twice_nat && addr_only)
- return VNET_API_ERROR_UNSUPPORTED;
+ return VNET_API_ERROR_UNSUPPORTED;
/* Convert VRF id to FIB index */
if (vrf_id != ~0)
- {
- p = hash_get (sm->ip4_main->fib_index_by_table_id, vrf_id);
- if (!p)
- return VNET_API_ERROR_NO_SUCH_FIB;
- fib_index = p[0];
- }
+ fib_index =
+ fib_table_find_or_create_and_lock (FIB_PROTOCOL_IP4, vrf_id,
+ nat_fib_src_low);
/* If not specified use inside VRF id from SNAT plugin startup config */
else
- {
- fib_index = sm->inside_fib_index;
- vrf_id = sm->inside_vrf_id;
- }
+ {
+ fib_index = sm->inside_fib_index;
+ vrf_id = sm->inside_vrf_id;
+ fib_table_lock (fib_index, FIB_PROTOCOL_IP4, nat_fib_src_low);
+ }
+
+ if (!(out2in_only || identity_nat))
+ {
+ m_key.addr = l_addr;
+ m_key.port = addr_only ? 0 : l_port;
+ m_key.protocol = addr_only ? 0 : proto;
+ m_key.fib_index = fib_index;
+ kv.key = m_key.as_u64;
+ if (!clib_bihash_search_8_8
+ (&sm->static_mapping_by_local, &kv, &value))
+ return VNET_API_ERROR_VALUE_EXIST;
+ }
/* Find external address in allocated addresses and reserve port for
address and port pair mapping when dynamic translations enabled */
if (!(addr_only || sm->static_mapping_only || out2in_only))
- {
- 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)
- {
+ {
+ 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)) \
+ if (a->busy_##n##_port_refcounts[e_port]) \
return VNET_API_ERROR_INVALID_VALUE; \
- clib_bitmap_set_no_check (a->busy_##n##_port_bitmap, e_port, 1); \
+ ++a->busy_##n##_port_refcounts[e_port]; \
if (e_port > 1024) \
{ \
a->busy_##n##_ports++; \
- a->busy_##n##_ports_per_thread[(e_port - 1024) / sm->port_per_thread]++; \
+ a->busy_##n##_ports_per_thread[get_thread_idx_by_port(e_port)]++; \
} \
break;
- foreach_snat_protocol
+ foreach_snat_protocol
#undef _
- default:
- clib_warning("unknown_protocol");
- return VNET_API_ERROR_INVALID_VALUE_2;
- }
- break;
- }
- }
- /* External address must be allocated */
- if (!a && (l_addr.as_u32 != e_addr.as_u32))
- return VNET_API_ERROR_NO_SUCH_ENTRY;
- }
+ default:
+ nat_elog_info ("unknown protocol");
+ return VNET_API_ERROR_INVALID_VALUE_2;
+ }
+ break;
+ }
+ }
+ /* External address must be allocated */
+ if (!a && (l_addr.as_u32 != e_addr.as_u32))
+ {
+ if (sw_if_index != ~0)
+ {
+ for (i = 0; i < vec_len (sm->to_resolve); i++)
+ {
+ rp = sm->to_resolve + i;
+ if (rp->addr_only)
+ continue;
+ if (rp->sw_if_index != sw_if_index &&
+ rp->l_addr.as_u32 != l_addr.as_u32 &&
+ rp->vrf_id != vrf_id && rp->l_port != l_port &&
+ rp->e_port != e_port && rp->proto != proto)
+ continue;
+
+ vec_del1 (sm->to_resolve, i);
+ break;
+ }
+ }
+ return VNET_API_ERROR_NO_SUCH_ENTRY;
+ }
+ }
pool_get (sm->static_mappings, m);
- memset (m, 0, sizeof (*m));
+ clib_memset (m, 0, sizeof (*m));
m->tag = vec_dup (tag);
m->local_addr = l_addr;
m->external_addr = e_addr;
- m->addr_only = addr_only;
- m->vrf_id = vrf_id;
- m->fib_index = fib_index;
m->twice_nat = twice_nat;
- m->out2in_only = out2in_only;
+ if (out2in_only)
+ m->flags |= NAT_STATIC_MAPPING_FLAG_OUT2IN_ONLY;
+ if (addr_only)
+ m->flags |= NAT_STATIC_MAPPING_FLAG_ADDR_ONLY;
+ if (identity_nat)
+ {
+ m->flags |= NAT_STATIC_MAPPING_FLAG_IDENTITY_NAT;
+ pool_get (m->locals, local);
+ local->vrf_id = vrf_id;
+ local->fib_index = fib_index;
+ }
+ else
+ {
+ m->vrf_id = vrf_id;
+ m->fib_index = fib_index;
+ }
if (!addr_only)
- {
- m->local_port = l_port;
- m->external_port = e_port;
- m->proto = proto;
- }
+ {
+ m->local_port = l_port;
+ m->external_port = e_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);
- }
+ if (sm->num_workers > 1)
+ {
+ ip4_header_t ip = {
+ .src_address = m->local_addr,
+ };
+ vec_add1 (m->workers, sm->worker_in2out_cb (&ip, m->fib_index, 0));
+ tsm = vec_elt_at_index (sm->per_thread_data, m->workers[0]);
+ }
else
- tsm = vec_elt_at_index (sm->per_thread_data, sm->num_workers);
+ 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;
+ m_key.fib_index = fib_index;
kv.key = m_key.as_u64;
kv.value = m - sm->static_mappings;
if (!out2in_only)
- clib_bihash_add_del_8_8(&sm->static_mapping_by_local, &kv, 1);
- if (twice_nat || out2in_only)
- {
- 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");
- }
+ clib_bihash_add_del_8_8 (&sm->static_mapping_by_local, &kv, 1);
m_key.addr = m->external_addr;
m_key.port = m->external_port;
- m_key.fib_index = sm->outside_fib_index;
+ m_key.fib_index = 0;
kv.key = m_key.as_u64;
kv.value = m - sm->static_mappings;
- clib_bihash_add_del_8_8(&sm->static_mapping_by_external, &kv, 1);
- if (twice_nat || out2in_only)
- {
- 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");
- }
+ clib_bihash_add_del_8_8 (&sm->static_mapping_by_external, &kv, 1);
/* Delete dynamic sessions matching local address (+ local port) */
if (!(sm->static_mapping_only))
- {
- 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 (&tsm->user_hash, &kv, &value))
- {
- user_index = value.value;
- u = pool_elt_at_index (tsm->users, user_index);
- if (u->nsessions)
- {
- 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 (snat_is_session_static (s))
- continue;
-
- if (!addr_only)
- {
- if ((s->out2in.addr.as_u32 != e_addr.as_u32) &&
- (clib_net_to_host_u16 (s->out2in.port) != e_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->nsessions--;
-
- if (!addr_only)
- break;
- }
- }
- }
- }
+ {
+ 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 (&tsm->user_hash, &kv, &value))
+ {
+ user_index = value.value;
+ u = pool_elt_at_index (tsm->users, user_index);
+ if (u->nsessions)
+ {
+ 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 (snat_is_session_static (s))
+ continue;
+
+ if (!addr_only
+ && (clib_net_to_host_u16 (s->in2out.port) !=
+ m->local_port))
+ continue;
+
+ nat_free_session_data (sm, s,
+ tsm - sm->per_thread_data, 0);
+ nat44_delete_session (sm, s, tsm - sm->per_thread_data);
+
+ if (!addr_only && !sm->endpoint_dependent)
+ break;
+ }
+ }
+ }
+ }
}
else
{
if (!m)
- return VNET_API_ERROR_NO_SUCH_ENTRY;
+ {
+ if (sw_if_index != ~0)
+ return 0;
+ else
+ return VNET_API_ERROR_NO_SUCH_ENTRY;
+ }
+
+ if (identity_nat)
+ {
+ if (vrf_id == ~0)
+ vrf_id = sm->inside_vrf_id;
+
+ /* *INDENT-OFF* */
+ pool_foreach (local, m->locals,
+ ({
+ if (local->vrf_id == vrf_id)
+ find = local - m->locals;
+ }));
+ /* *INDENT-ON* */
+ if (find == ~0)
+ return VNET_API_ERROR_NO_SUCH_ENTRY;
+
+ local = pool_elt_at_index (m->locals, find);
+ fib_index = local->fib_index;
+ pool_put (m->locals, local);
+ }
+ else
+ fib_index = m->fib_index;
/* Free external address port */
if (!(addr_only || sm->static_mapping_only || out2in_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)
- {
+ {
+ 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); \
+ --a->busy_##n##_port_refcounts[e_port]; \
if (e_port > 1024) \
{ \
a->busy_##n##_ports--; \
- a->busy_##n##_ports_per_thread[(e_port - 1024) / sm->port_per_thread]--; \
+ a->busy_##n##_ports_per_thread[get_thread_idx_by_port(e_port)]--; \
} \
break;
- foreach_snat_protocol
+ foreach_snat_protocol
#undef _
- default:
- clib_warning("unknown_protocol");
- return VNET_API_ERROR_INVALID_VALUE_2;
- }
- break;
- }
- }
- }
+ default:
+ nat_elog_info ("unknown protocol");
+ return VNET_API_ERROR_INVALID_VALUE_2;
+ }
+ break;
+ }
+ }
+ }
if (sm->num_workers > 1)
- tsm = vec_elt_at_index (sm->per_thread_data, m->worker_index);
+ tsm = vec_elt_at_index (sm->per_thread_data, m->workers[0]);
else
- tsm = vec_elt_at_index (sm->per_thread_data, sm->num_workers);
+ 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;
+ m_key.fib_index = fib_index;
kv.key = m_key.as_u64;
if (!out2in_only)
- clib_bihash_add_del_8_8(&sm->static_mapping_by_local, &kv, 0);
- if (twice_nat || out2in_only)
- {
- 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 || out2in_only)
- {
- 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");
- }
+ clib_bihash_add_del_8_8 (&sm->static_mapping_by_local, &kv, 0);
/* Delete session(s) for static mapping if exist */
if (!(sm->static_mapping_only) ||
- (sm->static_mapping_only && sm->static_mapping_connection_tracking))
- {
- 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 (&tsm->user_hash, &kv, &value))
- {
- user_index = value.value;
- u = pool_elt_at_index (tsm->users, user_index);
- 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 (!addr_only)
- {
- if ((s->out2in.addr.as_u32 != e_addr.as_u32) &&
- (clib_net_to_host_u16 (s->out2in.port) != e_port))
- continue;
- }
+ (sm->static_mapping_only && sm->static_mapping_connection_tracking))
+ {
+ u_key.addr = m->local_addr;
+ u_key.fib_index = fib_index;
+ kv.key = u_key.as_u64;
+ if (!clib_bihash_search_8_8 (&tsm->user_hash, &kv, &value))
+ {
+ user_index = value.value;
+ u = pool_elt_at_index (tsm->users, user_index);
+ 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 (!addr_only)
+ {
+ if ((s->out2in.addr.as_u32 != e_addr.as_u32) ||
+ (clib_net_to_host_u16 (s->out2in.port) !=
+ e_port))
+ continue;
+ }
+
+ if (is_lb_session (s))
+ continue;
+
+ if (!snat_is_session_static (s))
+ continue;
+
+ nat_free_session_data (sm, s,
+ tsm - sm->per_thread_data, 0);
+ nat44_delete_session (sm, s, tsm - sm->per_thread_data);
+
+ if (!addr_only && !sm->endpoint_dependent)
+ break;
+ }
+ }
+ }
+ }
- 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--;
+ fib_table_unlock (fib_index, FIB_PROTOCOL_IP4, nat_fib_src_low);
+ if (pool_elts (m->locals))
+ return 0;
- if (!addr_only)
- break;
- }
- if (addr_only)
- {
- pool_put (tsm->users, u);
- clib_bihash_add_del_8_8 (&tsm->user_hash, &kv, 0);
- }
- }
- }
- }
+ m_key.addr = m->external_addr;
+ m_key.port = m->external_port;
+ m_key.fib_index = 0;
+ kv.key = m_key.as_u64;
+ clib_bihash_add_del_8_8 (&sm->static_mapping_by_external, &kv, 0);
vec_free (m->tag);
+ vec_free (m->workers);
/* Delete static mapping from pool */
pool_put (sm->static_mappings, m);
}
return 0;
/* Add/delete external address to FIB */
+ /* *INDENT-OFF* */
pool_foreach (interface, sm->interfaces,
({
if (nat_interface_is_inside(interface) || sm->out2in_dpo)
snat_add_del_addr_to_fib(&e_addr, 32, interface->sw_if_index, is_add);
break;
}));
-
- return 0;
-}
-
-static int lb_local_exists (nat44_lb_addr_port_t * local,
- ip4_address_t * e_addr, u16 e_port)
-{
- snat_main_t *sm = &snat_main;
- snat_static_mapping_t *m;
- nat44_lb_addr_port_t *ap;
-
- /* *INDENT-OFF* */
- pool_foreach (m, sm->static_mappings,
- ({
- if (vec_len(m->locals))
- {
- if (m->external_port == e_port && m->external_addr.as_u32 == e_addr->as_u32)
- continue;
-
- vec_foreach (ap, m->locals)
- {
- if (ap->port == local->port && ap->addr.as_u32 == local->addr.as_u32)
- return 1;
- }
- }
- }));
/* *INDENT-ON* */
return 0;
}
-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, u8 out2in_only, u8 *tag)
+int
+nat44_add_del_lb_static_mapping (ip4_address_t e_addr, u16 e_port,
+ snat_protocol_t proto,
+ nat44_lb_addr_port_t * locals, u8 is_add,
+ twice_nat_type_t twice_nat, u8 out2in_only,
+ u8 * tag, u32 affinity)
{
- snat_main_t * sm = &snat_main;
+ 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;
+ u32 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;
+ snat_session_t *s;
+ dlist_elt_t *head, *elt;
+ uword *bitmap = 0;
+
+ if (!sm->endpoint_dependent)
+ return VNET_API_ERROR_FEATURE_DISABLED;
m_key.addr = e_addr;
m_key.port = e_port;
m_key.protocol = proto;
- m_key.fib_index = sm->outside_fib_index;
+ m_key.fib_index = 0;
kv.key = m_key.as_u64;
if (clib_bihash_search_8_8 (&sm->static_mapping_by_external, &kv, &value))
m = 0;
if (is_add)
{
if (m)
- return VNET_API_ERROR_VALUE_EXIST;
+ 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);
+ return VNET_API_ERROR_INVALID_VALUE;
/* Find external address in allocated addresses and reserve port for
address and port pair mapping when dynamic translations enabled */
if (!(sm->static_mapping_only || out2in_only))
- {
- 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)
- {
+ {
+ 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)) \
+ if (a->busy_##n##_port_refcounts[e_port]) \
return VNET_API_ERROR_INVALID_VALUE; \
- clib_bitmap_set_no_check (a->busy_##n##_port_bitmap, e_port, 1); \
+ ++a->busy_##n##_port_refcounts[e_port]; \
if (e_port > 1024) \
{ \
a->busy_##n##_ports++; \
- a->busy_##n##_ports_per_thread[(e_port - 1024) / sm->port_per_thread]++; \
+ a->busy_##n##_ports_per_thread[get_thread_idx_by_port(e_port)]++; \
} \
break;
- foreach_snat_protocol
+ 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;
- }
+ default:
+ nat_elog_info ("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));
+ clib_memset (m, 0, sizeof (*m));
m->tag = vec_dup (tag);
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->out2in_only = out2in_only;
+ m->flags |= NAT_STATIC_MAPPING_FLAG_LB;
+ if (out2in_only)
+ m->flags |= NAT_STATIC_MAPPING_FLAG_OUT2IN_ONLY;
+ m->affinity = affinity;
+
+ if (affinity)
+ m->affinity_per_service_list_head_index =
+ nat_affinity_get_per_service_list_head_index ();
+ else
+ m->affinity_per_service_list_head_index = ~0;
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;
+ m_key.fib_index = 0;
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;
- }
+ if (clib_bihash_add_del_8_8 (&sm->static_mapping_by_external, &kv, 1))
+ {
+ nat_elog_err ("static_mapping_by_external 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;
- if (!out2in_only)
- {
- 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;
- }
- }
+ {
+ locals[i].fib_index =
+ fib_table_find_or_create_and_lock (FIB_PROTOCOL_IP4,
+ locals[i].vrf_id,
+ nat_fib_src_low);
+ m_key.addr = locals[i].addr;
+ m_key.fib_index = locals[i].fib_index;
+ if (!out2in_only)
+ {
+ 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);
+ pool_get (m->locals, local);
+ *local = locals[i];
+ if (sm->num_workers > 1)
+ {
+ ip4_header_t ip = {
+ .src_address = locals[i].addr,
+ };
+ bitmap =
+ clib_bitmap_set (bitmap,
+ sm->worker_in2out_cb (&ip, m->fib_index, 0),
+ 1);
+ }
+ }
+
+ /* Assign workers */
+ if (sm->num_workers > 1)
+ {
+ /* *INDENT-OFF* */
+ clib_bitmap_foreach (i, bitmap,
+ ({
+ vec_add1(m->workers, i);
+ }));
+ /* *INDENT-ON* */
+ }
}
else
{
if (!m)
- return VNET_API_ERROR_NO_SUCH_ENTRY;
+ return VNET_API_ERROR_NO_SUCH_ENTRY;
- fib_table_unlock (m->fib_index, FIB_PROTOCOL_IP4, FIB_SOURCE_PLUGIN_HI);
+ if (!is_lb_static_mapping (m))
+ return VNET_API_ERROR_INVALID_VALUE;
/* Free external address port */
if (!(sm->static_mapping_only || out2in_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)
- {
+ {
+ 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); \
+ --a->busy_##n##_port_refcounts[e_port]; \
if (e_port > 1024) \
{ \
a->busy_##n##_ports--; \
- a->busy_##n##_ports_per_thread[(e_port - 1024) / sm->port_per_thread]--; \
+ a->busy_##n##_ports_per_thread[get_thread_idx_by_port(e_port)]--; \
} \
break;
- foreach_snat_protocol
+ foreach_snat_protocol
#undef _
- default:
- clib_warning("unknown_protocol");
- return VNET_API_ERROR_INVALID_VALUE_2;
- }
- break;
- }
- }
- }
+ default:
+ nat_elog_info ("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);
+ m_key.fib_index = 0;
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;
- }
+ if (clib_bihash_add_del_8_8 (&sm->static_mapping_by_external, &kv, 0))
+ {
+ nat_elog_err ("static_mapping_by_external key del failed");
+ return VNET_API_ERROR_UNSPECIFIED;
+ }
- vec_foreach (local, m->locals)
- {
+ /* *INDENT-OFF* */
+ pool_foreach (local, m->locals,
+ ({
+ fib_table_unlock (local->fib_index, FIB_PROTOCOL_IP4,
+ nat_fib_src_low);
m_key.addr = local->addr;
if (!out2in_only)
{
m_key.port = local->port;
- m_key.fib_index = m->fib_index;
+ m_key.fib_index = local->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");
+ nat_elog_err ("static_mapping_by_local key del failed");
return VNET_API_ERROR_UNSPECIFIED;
}
}
- if (!lb_local_exists(local, &e_addr, e_port))
+ if (sm->num_workers > 1)
{
- 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;
- }
+ ip4_header_t ip = {
+ .src_address = local->addr,
+ };
+ tsm = vec_elt_at_index (sm->per_thread_data,
+ sm->worker_in2out_cb (&ip, m->fib_index, 0));
}
+ else
+ tsm = vec_elt_at_index (sm->per_thread_data, sm->num_workers);
+
/* Delete sessions */
u_key.addr = local->addr;
- u_key.fib_index = m->fib_index;
+ u_key.fib_index = local->fib_index;
kv.key = u_key.as_u64;
if (!clib_bihash_search_8_8 (&tsm->user_hash, &kv, &value))
{
elt = pool_elt_at_index (tsm->list_pool, elt->next);
ses_index = elt->value;
- if ((s->in2out.addr.as_u32 != local->addr.as_u32) &&
+ if (!(is_lb_session (s)))
+ continue;
+
+ 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--;
+ nat_free_session_data (sm, s, tsm - sm->per_thread_data, 0);
+ nat44_delete_session (sm, s, tsm - sm->per_thread_data);
}
}
}
- }
- vec_free(m->locals);
- vec_free(m->tag);
+ }));
+ /* *INDENT-ON* */
+ if (m->affinity)
+ nat_affinity_flush_service (m->affinity_per_service_list_head_index);
+ pool_free (m->locals);
+ vec_free (m->tag);
+ vec_free (m->workers);
pool_put (sm->static_mappings, m);
}
}
int
-snat_del_address (snat_main_t *sm, ip4_address_t addr, u8 delete_sm,
- u8 twice_nat)
+nat44_lb_static_mapping_add_del_local (ip4_address_t e_addr, u16 e_port,
+ ip4_address_t l_addr, u16 l_port,
+ snat_protocol_t proto, u32 vrf_id,
+ u8 probability, u8 is_add)
+{
+ snat_main_t *sm = &snat_main;
+ snat_static_mapping_t *m = 0;
+ snat_session_key_t m_key;
+ clib_bihash_kv_8_8_t kv, value;
+ nat44_lb_addr_port_t *local, *prev_local, *match_local = 0;
+ snat_main_per_thread_data_t *tsm;
+ snat_user_key_t u_key;
+ snat_user_t *u;
+ snat_session_t *s;
+ dlist_elt_t *head, *elt;
+ u32 elt_index, head_index, ses_index, *locals = 0;
+ uword *bitmap = 0;
+ int i;
+
+ if (!sm->endpoint_dependent)
+ return VNET_API_ERROR_FEATURE_DISABLED;
+
+ m_key.addr = e_addr;
+ m_key.port = e_port;
+ m_key.protocol = proto;
+ m_key.fib_index = 0;
+ 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);
+
+ if (!m)
+ return VNET_API_ERROR_NO_SUCH_ENTRY;
+
+ if (!is_lb_static_mapping (m))
+ return VNET_API_ERROR_INVALID_VALUE;
+
+ /* *INDENT-OFF* */
+ pool_foreach (local, m->locals,
+ ({
+ if ((local->addr.as_u32 == l_addr.as_u32) && (local->port == l_port) &&
+ (local->vrf_id == vrf_id))
+ {
+ match_local = local;
+ break;
+ }
+ }));
+ /* *INDENT-ON* */
+
+ if (is_add)
+ {
+ if (match_local)
+ return VNET_API_ERROR_VALUE_EXIST;
+
+ pool_get (m->locals, local);
+ clib_memset (local, 0, sizeof (*local));
+ local->addr.as_u32 = l_addr.as_u32;
+ local->port = l_port;
+ local->probability = probability;
+ local->vrf_id = vrf_id;
+ local->fib_index =
+ fib_table_find_or_create_and_lock (FIB_PROTOCOL_IP4, vrf_id,
+ nat_fib_src_low);
+
+ if (!is_out2in_only_static_mapping (m))
+ {
+ m_key.addr = l_addr;
+ m_key.port = l_port;
+ m_key.fib_index = local->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_local, &kv, 1))
+ nat_elog_err ("static_mapping_by_local key add failed");
+ }
+ }
+ else
+ {
+ if (!match_local)
+ return VNET_API_ERROR_NO_SUCH_ENTRY;
+
+ if (pool_elts (m->locals) < 3)
+ return VNET_API_ERROR_UNSPECIFIED;
+
+ fib_table_unlock (match_local->fib_index, FIB_PROTOCOL_IP4,
+ nat_fib_src_low);
+
+ if (!is_out2in_only_static_mapping (m))
+ {
+ m_key.addr = l_addr;
+ m_key.port = l_port;
+ m_key.fib_index = match_local->fib_index;
+ kv.key = m_key.as_u64;
+ if (clib_bihash_add_del_8_8 (&sm->static_mapping_by_local, &kv, 0))
+ nat_elog_err ("static_mapping_by_local key del failed");
+ }
+
+ if (sm->num_workers > 1)
+ {
+ ip4_header_t ip = {
+ .src_address = local->addr,
+ };
+ tsm = vec_elt_at_index (sm->per_thread_data,
+ sm->worker_in2out_cb (&ip, m->fib_index,
+ 0));
+ }
+ else
+ tsm = vec_elt_at_index (sm->per_thread_data, sm->num_workers);
+
+ /* Delete sessions */
+ u_key.addr = match_local->addr;
+ u_key.fib_index = match_local->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 (!(is_lb_session (s)))
+ continue;
+
+ if ((s->in2out.addr.as_u32 != match_local->addr.as_u32) ||
+ (clib_net_to_host_u16 (s->in2out.port) !=
+ match_local->port))
+ continue;
+
+ nat_free_session_data (sm, s, tsm - sm->per_thread_data, 0);
+ nat44_delete_session (sm, s, tsm - sm->per_thread_data);
+ }
+ }
+ }
+
+ pool_put (m->locals, match_local);
+ }
+
+ vec_free (m->workers);
+
+ /* *INDENT-OFF* */
+ pool_foreach (local, m->locals,
+ ({
+ vec_add1 (locals, local - m->locals);
+ if (sm->num_workers > 1)
+ {
+ ip4_header_t ip;
+ ip.src_address.as_u32 = local->addr.as_u32,
+ bitmap = clib_bitmap_set (bitmap,
+ sm->worker_in2out_cb (&ip, local->fib_index, 0),
+ 1);
+ }
+ }));
+ /* *INDENT-ON* */
+
+ ASSERT (vec_len (locals) > 1);
+
+ local = pool_elt_at_index (m->locals, locals[0]);
+ local->prefix = local->probability;
+ for (i = 1; i < vec_len (locals); i++)
+ {
+ local = pool_elt_at_index (m->locals, locals[i]);
+ prev_local = pool_elt_at_index (m->locals, locals[i - 1]);
+ local->prefix = local->probability + prev_local->prefix;
+ }
+
+ /* Assign workers */
+ if (sm->num_workers > 1)
+ {
+ /* *INDENT-OFF* */
+ clib_bitmap_foreach (i, bitmap, ({ vec_add1(m->workers, i); }));
+ /* *INDENT-ON* */
+ }
+
+ return 0;
+}
+
+int
+snat_del_address (snat_main_t * sm, ip4_address_t addr, u8 delete_sm,
+ u8 twice_nat)
{
snat_address_t *a = 0;
snat_session_t *ses;
u32 *ses_to_be_removed = 0, *ses_index;
- clib_bihash_kv_8_8_t kv, value;
- snat_user_key_t user_key;
- snat_user_t *u;
snat_main_per_thread_data_t *tsm;
snat_static_mapping_t *m;
snat_interface_t *interface;
int i;
- snat_address_t *addresses = twice_nat ? sm->twice_nat_addresses : sm->addresses;
+ snat_address_t *addresses =
+ twice_nat ? sm->twice_nat_addresses : sm->addresses;
/* Find SNAT address */
- for (i=0; i < vec_len (addresses); i++)
+ for (i = 0; i < vec_len (addresses); i++)
{
if (addresses[i].addr.as_u32 == addr.as_u32)
- {
- a = addresses + i;
- break;
- }
+ {
+ a = addresses + i;
+ break;
+ }
}
if (!a)
return VNET_API_ERROR_NO_SUCH_ENTRY;
if (delete_sm)
{
+ /* *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, m->addr_only, ~0,
+ m->vrf_id, is_addr_only_static_mapping(m), ~0,
m->proto, 0, m->twice_nat,
- m->out2in_only, m->tag);
+ is_out2in_only_static_mapping(m), m->tag, is_identity_static_mapping(m));
}));
+ /* *INDENT-ON* */
}
else
{
/* Check if address is used in some static mapping */
- if (is_snat_address_used_in_static_mapping(sm, addr))
- {
- clib_warning ("address used in static mapping");
- return VNET_API_ERROR_UNSPECIFIED;
- }
+ if (is_snat_address_used_in_static_mapping (sm, addr))
+ {
+ nat_elog_notice ("address used in static mapping");
+ return VNET_API_ERROR_UNSPECIFIED;
+ }
}
if (a->fib_index != ~0)
- fib_table_unlock(a->fib_index, FIB_PROTOCOL_IP4,
- FIB_SOURCE_PLUGIN_HI);
+ fib_table_unlock (a->fib_index, FIB_PROTOCOL_IP4, nat_fib_src_low);
/* Delete sessions using address */
if (a->busy_tcp_ports || a->busy_udp_ports || a->busy_icmp_ports)
{
+ /* *INDENT-OFF* */
vec_foreach (tsm, sm->per_thread_data)
{
pool_foreach (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);
+ nat_free_session_data (sm, ses, tsm - sm->per_thread_data, 0);
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 (&tsm->user_hash, &kv, &value))
- {
- u = pool_elt_at_index (tsm->users, value.value);
- u->nsessions--;
- }
}
}));
vec_foreach (ses_index, ses_to_be_removed)
- pool_put_index (tsm->sessions, ses_index[0]);
+ {
+ ses = pool_elt_at_index (tsm->sessions, ses_index[0]);
+ nat44_delete_session (sm, ses, tsm - sm->per_thread_data);
+ }
vec_free (ses_to_be_removed);
- }
+ }
+ /* *INDENT-ON* */
}
- if (twice_nat)
+#define _(N, i, n, s) \
+ vec_free (a->busy_##n##_ports_per_thread);
+ foreach_snat_protocol
+#undef _
+ if (twice_nat)
{
vec_del1 (sm->twice_nat_addresses, i);
return 0;
vec_del1 (sm->addresses, i);
/* Delete external address from FIB */
+ /* *INDENT-OFF* */
pool_foreach (interface, sm->interfaces,
({
if (nat_interface_is_inside(interface) || sm->out2in_dpo)
snat_add_del_addr_to_fib(&addr, 32, interface->sw_if_index, 0);
break;
}));
+ /* *INDENT-ON* */
return 0;
}
-int snat_interface_add_del (u32 sw_if_index, u8 is_inside, int is_del)
+int
+snat_interface_add_del (u32 sw_if_index, u8 is_inside, int is_del)
{
snat_main_t *sm = &snat_main;
snat_interface_t *i;
- const char * feature_name, *del_feature_name;
- snat_address_t * ap;
- snat_static_mapping_t * m;
- snat_det_map_t * dm;
+ 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->out2in_dpo && !is_inside)
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;
}));
+ /* *INDENT-ON* */
if (sm->static_mapping_only && !(sm->static_mapping_connection_tracking))
- feature_name = is_inside ? "nat44-in2out-fast" : "nat44-out2in-fast";
+ feature_name = is_inside ? "nat44-in2out-fast" : "nat44-out2in-fast";
else
{
if (sm->num_workers > 1 && !sm->deterministic)
- feature_name = is_inside ? "nat44-in2out-worker-handoff" : "nat44-out2in-worker-handoff";
+ 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";
+ 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";
+ }
else
- feature_name = is_inside ? "nat44-in2out" : "nat44-out2in";
+ feature_name = is_inside ? "nat44-in2out" : "nat44-out2in";
}
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);
+ sm->fq_in2out_index =
+ vlib_frame_queue_main_init (sm->handoff_in2out_index, NAT_FQ_NELTS);
if (sm->fq_out2in_index == ~0 && !sm->deterministic && sm->num_workers > 1)
- sm->fq_out2in_index = vlib_frame_queue_main_init (sm->out2in_node_index, 0);
+ sm->fq_out2in_index =
+ vlib_frame_queue_main_init (sm->handoff_out2in_index, NAT_FQ_NELTS);
+ if (!is_inside)
+ {
+ /* *INDENT-OFF* */
+ vec_foreach (outside_fib, sm->outside_fibs)
+ {
+ if (outside_fib->fib_index == fib_index)
+ {
+ if (is_del)
+ {
+ outside_fib->refcount--;
+ if (!outside_fib->refcount)
+ vec_del1 (sm->outside_fibs, outside_fib - sm->outside_fibs);
+ }
+ else
+ outside_fib->refcount++;
+ goto feature_set;
+ }
+ }
+ /* *INDENT-ON* */
+ if (!is_del)
+ {
+ vec_add2 (sm->outside_fibs, outside_fib, 1);
+ outside_fib->refcount = 1;
+ outside_fib->fib_index = fib_index;
+ }
+ }
+feature_set:
+ /* *INDENT-OFF* */
pool_foreach (i, sm->interfaces,
({
if (i->sw_if_index == sw_if_index)
feature_name = !is_inside ? "nat44-det-in2out" :
"nat44-det-out2in";
}
+ else if (sm->endpoint_dependent)
+ {
+ del_feature_name = "nat44-ed-classify";
+ feature_name = !is_inside ? "nat-pre-in2out" :
+ "nat-pre-out2in";
+ }
else
{
del_feature_name = "nat44-classify";
feature_name = !is_inside ? "nat44-in2out" : "nat44-out2in";
}
+ int rv = ip4_sv_reass_enable_disable_with_refcnt (sw_if_index, 0);
+ if (rv)
+ return rv;
vnet_feature_enable_disable ("ip4-unicast", del_feature_name,
sw_if_index, 0, 0, 0);
vnet_feature_enable_disable ("ip4-unicast", feature_name,
sw_if_index, 1, 0, 0);
+ if (!is_inside)
+ {
+ if (sm->endpoint_dependent)
+ vnet_feature_enable_disable ("ip4-local",
+ "nat44-ed-hairpinning",
+ sw_if_index, 1, 0, 0);
+ else if (!sm->deterministic)
+ vnet_feature_enable_disable ("ip4-local",
+ "nat44-hairpinning",
+ sw_if_index, 1, 0, 0);
+ }
}
else
{
+ int rv = ip4_sv_reass_enable_disable_with_refcnt (sw_if_index, 0);
+ if (rv)
+ return rv;
vnet_feature_enable_disable ("ip4-unicast", feature_name,
sw_if_index, 0, 0, 0);
pool_put (sm->interfaces, i);
+ if (is_inside)
+ {
+ if (sm->endpoint_dependent)
+ vnet_feature_enable_disable ("ip4-local",
+ "nat44-ed-hairpinning",
+ sw_if_index, 0, 0, 0);
+ else if (!sm->deterministic)
+ vnet_feature_enable_disable ("ip4-local",
+ "nat44-hairpinning",
+ sw_if_index, 0, 0, 0);
+ }
}
}
else
"nat44-det-out2in";
feature_name = "nat44-det-classify";
}
+ else if (sm->endpoint_dependent)
+ {
+ del_feature_name = !is_inside ? "nat-pre-in2out" :
+ "nat-pre-out2in";
+
+ feature_name = "nat44-ed-classify";
+ }
else
{
del_feature_name = !is_inside ? "nat44-in2out" : "nat44-out2in";
feature_name = "nat44-classify";
}
+ int rv = ip4_sv_reass_enable_disable_with_refcnt (sw_if_index, 1);
+ if (rv)
+ return rv;
vnet_feature_enable_disable ("ip4-unicast", del_feature_name,
sw_if_index, 0, 0, 0);
vnet_feature_enable_disable ("ip4-unicast", feature_name,
sw_if_index, 1, 0, 0);
+ if (!is_inside)
+ {
+ if (sm->endpoint_dependent)
+ vnet_feature_enable_disable ("ip4-local", "nat44-ed-hairpinning",
+ sw_if_index, 0, 0, 0);
+ else if (!sm->deterministic)
+ vnet_feature_enable_disable ("ip4-local", "nat44-hairpinning",
+ sw_if_index, 0, 0, 0);
+ }
goto set_flags;
}
goto fib;
}
}));
+ /* *INDENT-ON* */
if (is_del)
return VNET_API_ERROR_NO_SUCH_ENTRY;
pool_get (sm->interfaces, i);
i->sw_if_index = sw_if_index;
i->flags = 0;
- vnet_feature_enable_disable ("ip4-unicast", feature_name, sw_if_index, 1, 0, 0);
+ vnet_feature_enable_disable ("ip4-unicast", feature_name, sw_if_index, 1, 0,
+ 0);
+
+ int rv = ip4_sv_reass_enable_disable_with_refcnt (sw_if_index, 1);
+ if (rv)
+ return rv;
+
+ if (is_inside && !sm->out2in_dpo)
+ {
+ if (sm->endpoint_dependent)
+ vnet_feature_enable_disable ("ip4-local", "nat44-ed-hairpinning",
+ sw_if_index, 1, 0, 0);
+ else if (!sm->deterministic)
+ vnet_feature_enable_disable ("ip4-local", "nat44-hairpinning",
+ sw_if_index, 1, 0, 0);
+ }
set_flags:
if (is_inside)
- i->flags |= NAT_INTERFACE_FLAG_IS_INSIDE;
+ {
+ i->flags |= NAT_INTERFACE_FLAG_IS_INSIDE;
+ return 0;
+ }
else
i->flags |= NAT_INTERFACE_FLAG_IS_OUTSIDE;
/* Add/delete external addresses to FIB */
fib:
- if (is_inside && !sm->out2in_dpo)
- {
- vnet_feature_enable_disable ("ip4-local", "nat44-hairpinning",
- sw_if_index, !is_del, 0, 0);
- return 0;
- }
-
+ /* *INDENT-OFF* */
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) || (m->local_addr.as_u32 == m->external_addr.as_u32))
+ if (!(is_addr_only_static_mapping(m)) || (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);
({
snat_add_del_addr_to_fib(&dm->out_addr, dm->out_plen, sw_if_index, !is_del);
}));
+ /* *INDENT-ON* */
return 0;
}
-int snat_interface_add_del_output_feature (u32 sw_if_index,
- u8 is_inside,
- int is_del)
+int
+snat_interface_add_del_output_feature (u32 sw_if_index,
+ u8 is_inside, int is_del)
{
snat_main_t *sm = &snat_main;
snat_interface_t *i;
- snat_address_t * ap;
- snat_static_mapping_t * m;
+ snat_address_t *ap;
+ snat_static_mapping_t *m;
+ nat_outside_fib_t *outside_fib;
+ u32 fib_index = fib_table_get_index_for_sw_if_index (FIB_PROTOCOL_IP4,
+ sw_if_index);
+
if (sm->deterministic ||
(sm->static_mapping_only && !(sm->static_mapping_connection_tracking)))
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;
}));
+ /* *INDENT-ON* */
+
+ if (!is_inside)
+ {
+ /* *INDENT-OFF* */
+ vec_foreach (outside_fib, sm->outside_fibs)
+ {
+ if (outside_fib->fib_index == fib_index)
+ {
+ if (is_del)
+ {
+ outside_fib->refcount--;
+ if (!outside_fib->refcount)
+ vec_del1 (sm->outside_fibs, outside_fib - sm->outside_fibs);
+ }
+ else
+ outside_fib->refcount++;
+ goto feature_set;
+ }
+ }
+ /* *INDENT-ON* */
+ if (!is_del)
+ {
+ vec_add2 (sm->outside_fibs, outside_fib, 1);
+ outside_fib->refcount = 1;
+ outside_fib->fib_index = fib_index;
+ }
+ }
+feature_set:
if (is_inside)
{
- vnet_feature_enable_disable ("ip4-unicast", "nat44-hairpin-dst",
- sw_if_index, !is_del, 0, 0);
- vnet_feature_enable_disable ("ip4-output", "nat44-hairpin-src",
- sw_if_index, !is_del, 0, 0);
+ if (sm->endpoint_dependent)
+ {
+ int rv =
+ ip4_sv_reass_enable_disable_with_refcnt (sw_if_index, !is_del);
+ if (rv)
+ return rv;
+ rv =
+ ip4_sv_reass_output_enable_disable_with_refcnt (sw_if_index,
+ !is_del);
+ if (rv)
+ return rv;
+ vnet_feature_enable_disable ("ip4-unicast", "nat44-ed-hairpin-dst",
+ sw_if_index, !is_del, 0, 0);
+ vnet_feature_enable_disable ("ip4-output", "nat44-ed-hairpin-src",
+ sw_if_index, !is_del, 0, 0);
+ }
+ else
+ {
+ int rv =
+ ip4_sv_reass_enable_disable_with_refcnt (sw_if_index, !is_del);
+ if (rv)
+ return rv;
+ rv =
+ ip4_sv_reass_output_enable_disable_with_refcnt (sw_if_index,
+ !is_del);
+ if (rv)
+ return rv;
+ vnet_feature_enable_disable ("ip4-unicast", "nat44-hairpin-dst",
+ sw_if_index, !is_del, 0, 0);
+ vnet_feature_enable_disable ("ip4-output", "nat44-hairpin-src",
+ sw_if_index, !is_del, 0, 0);
+ }
goto fq;
}
if (sm->num_workers > 1)
{
- vnet_feature_enable_disable ("ip4-unicast", "nat44-out2in-worker-handoff",
- sw_if_index, !is_del, 0, 0);
+ int rv = ip4_sv_reass_enable_disable_with_refcnt (sw_if_index, !is_del);
+ if (rv)
+ return rv;
+ rv =
+ ip4_sv_reass_output_enable_disable_with_refcnt (sw_if_index, !is_del);
+ if (rv)
+ return rv;
+ vnet_feature_enable_disable ("ip4-unicast",
+ "nat44-out2in-worker-handoff",
+ sw_if_index, !is_del, 0, 0);
vnet_feature_enable_disable ("ip4-output",
- "nat44-in2out-output-worker-handoff",
- sw_if_index, !is_del, 0, 0);
+ "nat44-in2out-output-worker-handoff",
+ sw_if_index, !is_del, 0, 0);
}
else
{
- vnet_feature_enable_disable ("ip4-unicast", "nat44-out2in", sw_if_index,
- !is_del, 0, 0);
- vnet_feature_enable_disable ("ip4-output", "nat44-in2out-output",
- sw_if_index, !is_del, 0, 0);
+ if (sm->endpoint_dependent)
+ {
+ int rv =
+ ip4_sv_reass_enable_disable_with_refcnt (sw_if_index, !is_del);
+ if (rv)
+ return rv;
+ rv =
+ ip4_sv_reass_output_enable_disable_with_refcnt (sw_if_index,
+ !is_del);
+ if (rv)
+ return rv;
+ vnet_feature_enable_disable ("ip4-unicast", "nat-pre-out2in",
+ sw_if_index, !is_del, 0, 0);
+ vnet_feature_enable_disable ("ip4-output", "nat44-ed-in2out-output",
+ sw_if_index, !is_del, 0, 0);
+ }
+ else
+ {
+ int rv =
+ ip4_sv_reass_enable_disable_with_refcnt (sw_if_index, !is_del);
+ if (rv)
+ return rv;
+ rv =
+ ip4_sv_reass_output_enable_disable_with_refcnt (sw_if_index,
+ !is_del);
+ if (rv)
+ return rv;
+ vnet_feature_enable_disable ("ip4-unicast", "nat44-out2in",
+ sw_if_index, !is_del, 0, 0);
+ vnet_feature_enable_disable ("ip4-output", "nat44-in2out-output",
+ sw_if_index, !is_del, 0, 0);
+ }
}
fq:
if (sm->fq_in2out_output_index == ~0 && sm->num_workers > 1)
sm->fq_in2out_output_index =
- vlib_frame_queue_main_init (sm->in2out_output_node_index, 0);
+ vlib_frame_queue_main_init (sm->handoff_in2out_output_index, 0);
if (sm->fq_out2in_index == ~0 && sm->num_workers > 1)
- sm->fq_out2in_index = vlib_frame_queue_main_init (sm->out2in_node_index, 0);
+ sm->fq_out2in_index =
+ vlib_frame_queue_main_init (sm->handoff_out2in_index, 0);
+ /* *INDENT-OFF* */
pool_foreach (i, sm->output_feature_interfaces,
({
if (i->sw_if_index == sw_if_index)
goto fib;
}
}));
+ /* *INDENT-ON* */
if (is_del)
return VNET_API_ERROR_NO_SUCH_ENTRY;
if (is_inside)
return 0;
+ /* *INDENT-OFF* */
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 (!((is_addr_only_static_mapping(m))) || (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);
}));
+ /* *INDENT-ON* */
return 0;
}
-int snat_set_workers (uword * bitmap)
+int
+snat_set_workers (uword * bitmap)
{
snat_main_t *sm = &snat_main;
int i, j = 0;
return VNET_API_ERROR_INVALID_WORKER;
vec_free (sm->workers);
+ /* *INDENT-OFF* */
clib_bitmap_foreach (i, bitmap,
({
vec_add1(sm->workers, i);
sm->per_thread_data[sm->first_worker_index + i].snat_thread_index = j;
+ sm->per_thread_data[sm->first_worker_index + i].thread_index = i;
j++;
}));
+ /* *INDENT-ON* */
sm->port_per_thread = (0xffff - 1024) / _vec_len (sm->workers);
sm->num_snat_thread = _vec_len (sm->workers);
return 0;
}
+static void
+snat_update_outside_fib (u32 sw_if_index, u32 new_fib_index,
+ u32 old_fib_index)
+{
+ snat_main_t *sm = &snat_main;
+ nat_outside_fib_t *outside_fib;
+ snat_interface_t *i;
+ u8 is_add = 1;
+ u8 match = 0;
+
+ if (new_fib_index == old_fib_index)
+ return;
+
+ if (!vec_len (sm->outside_fibs))
+ return;
+
+ /* *INDENT-OFF* */
+ pool_foreach (i, sm->interfaces,
+ ({
+ if (i->sw_if_index == sw_if_index)
+ {
+ if (!(nat_interface_is_outside (i)))
+ return;
+ match = 1;
+ }
+ }));
+
+ pool_foreach (i, sm->output_feature_interfaces,
+ ({
+ if (i->sw_if_index == sw_if_index)
+ {
+ if (!(nat_interface_is_outside (i)))
+ return;
+ match = 1;
+ }
+ }));
+ /* *INDENT-ON* */
+
+ if (!match)
+ return;
+
+ vec_foreach (outside_fib, sm->outside_fibs)
+ {
+ if (outside_fib->fib_index == old_fib_index)
+ {
+ outside_fib->refcount--;
+ if (!outside_fib->refcount)
+ vec_del1 (sm->outside_fibs, outside_fib - sm->outside_fibs);
+ break;
+ }
+ }
+
+ vec_foreach (outside_fib, sm->outside_fibs)
+ {
+ if (outside_fib->fib_index == new_fib_index)
+ {
+ outside_fib->refcount++;
+ is_add = 0;
+ break;
+ }
+ }
+
+ if (is_add)
+ {
+ vec_add2 (sm->outside_fibs, outside_fib, 1);
+ outside_fib->refcount = 1;
+ outside_fib->fib_index = new_fib_index;
+ }
+}
+
+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);
+}
static void
snat_ip4_add_del_interface_address_cb (ip4_main_t * im,
- uword opaque,
- u32 sw_if_index,
- ip4_address_t * address,
- u32 address_length,
- u32 if_address_index,
- u32 is_delete);
+ uword opaque,
+ u32 sw_if_index,
+ ip4_address_t * address,
+ u32 address_length,
+ u32 if_address_index, u32 is_delete);
+
+static void
+nat_ip4_add_del_addr_only_sm_cb (ip4_main_t * im,
+ uword opaque,
+ u32 sw_if_index,
+ ip4_address_t * address,
+ u32 address_length,
+ u32 if_address_index, u32 is_delete);
static 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)
+ u32 fib_index,
+ u32 thread_index,
+ snat_session_key_t * k,
+ u16 port_per_thread, u32 snat_thread_index);
+
+static clib_error_t *
+snat_init (vlib_main_t * vm)
{
- 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;
+ 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;
+ vlib_node_t *node;
sm->vlib_main = vm;
- sm->vnet_main = vnet_get_main();
+ sm->vnet_main = vnet_get_main ();
sm->ip4_main = im;
sm->ip4_lookup_main = lm;
- sm->api_main = &api_main;
+ sm->api_main = vlibapi_get_main ();
sm->first_worker_index = 0;
- sm->next_worker = 0;
sm->num_workers = 0;
sm->num_snat_thread = 1;
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;
- sm->udp_timeout = SNAT_UDP_TIMEOUT;
- 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->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 *) "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->hairpin_dst_node_index = node->index;
+ node = vlib_get_node_by_name (vm, (u8 *) "nat44-hairpin-src");
+ sm->hairpin_src_node_index = node->index;
+ node = vlib_get_node_by_name (vm, (u8 *) "nat44-ed-hairpinning");
+ sm->ed_hairpinning_node_index = node->index;
+ node = vlib_get_node_by_name (vm, (u8 *) "nat44-ed-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)
- {
- sm->num_workers = tr->count;
- sm->first_worker_index = tr->first_index;
- }
+ {
+ sm->num_workers = tr->count;
+ sm->first_worker_index = tr->first_index;
+ }
}
vec_validate (sm->per_thread_data, tm->n_vlib_mains - 1);
/* 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);
+ 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;
}
- error = snat_api_init(vm, sm);
+ error = snat_api_init (vm, sm);
if (error)
return error;
vec_add1 (im->add_del_interface_address_callbacks, cb4);
+ cb4.function = nat_ip4_add_del_addr_only_sm_cb;
+ cb4.function_opaque = 0;
+
+ vec_add1 (im->add_del_interface_address_callbacks, cb4);
+
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);
+ 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);
+
/* Init IPFIX logging */
- snat_ipfix_logging_init(vm);
+ snat_ipfix_logging_init (vm);
/* Init NAT64 */
- error = nat64_init(vm);
+ error = nat64_init (vm);
if (error)
return error;
- dslite_init(vm);
+ nat66_init (vm);
+
+ ip4_table_bind_callback_t cbt4 = {
+ .function = snat_ip4_table_bind,
+ };
+ vec_add1 (ip4_main.table_bind_callbacks, cbt4);
- nat66_init();
+ 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);
- /* Init virtual fragmenentation reassembly */
- return nat_reass_init(vm);
+ return error;
}
VLIB_INIT_FUNCTION (snat_init);
-void snat_free_outside_address_and_port (snat_address_t * addresses,
- u32 thread_index,
- snat_session_key_t * k,
- u32 address_index)
+void
+snat_free_outside_address_and_port (snat_address_t * addresses,
+ u32 thread_index, snat_session_key_t * k)
{
snat_address_t *a;
+ u32 address_index;
u16 port_host_byte_order = clib_net_to_host_u16 (k->port);
+ for (address_index = 0; address_index < vec_len (addresses);
+ address_index++)
+ {
+ if (addresses[address_index].addr.as_u32 == k->addr.as_u32)
+ break;
+ }
+
ASSERT (address_index < vec_len (addresses));
a = addresses + address_index;
{
#define _(N, i, n, s) \
case SNAT_PROTOCOL_##N: \
- ASSERT (clib_bitmap_get_no_check (a->busy_##n##_port_bitmap, \
- port_host_byte_order) == 1); \
- clib_bitmap_set_no_check (a->busy_##n##_port_bitmap, \
- port_host_byte_order, 0); \
+ ASSERT (a->busy_##n##_port_refcounts[port_host_byte_order] >= 1); \
+ --a->busy_##n##_port_refcounts[port_host_byte_order]; \
a->busy_##n##_ports--; \
a->busy_##n##_ports_per_thread[thread_index]--; \
break;
foreach_snat_protocol
#undef _
default:
- clib_warning("unknown_protocol");
+ nat_elog_info ("unknown protocol");
return;
}
}
-/**
- * @brief Match NAT44 static mapping.
- *
- * @param sm NAT main.
- * @param match Address and port to match.
- * @param mapping External or local address and port of the matched mapping.
- * @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.
- */
-int snat_static_mapping_match (snat_main_t * sm,
- snat_session_key_t match,
- snat_session_key_t * mapping,
- u8 by_external,
- u8 *is_addr_only,
- u8 *twice_nat)
+static int
+nat_set_outside_address_and_port (snat_address_t * addresses,
+ u32 thread_index, snat_session_key_t * k)
{
- 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;
+ snat_address_t *a = 0;
+ u32 address_index;
+ u16 port_host_byte_order = clib_net_to_host_u16 (k->port);
- if (by_external)
- mapping_hash = &sm->static_mapping_by_external;
+ for (address_index = 0; address_index < vec_len (addresses);
+ address_index++)
+ {
+ if (addresses[address_index].addr.as_u32 != k->addr.as_u32)
+ continue;
- m_key.addr = match.addr;
+ a = addresses + address_index;
+ switch (k->protocol)
+ {
+#define _(N, j, n, s) \
+ case SNAT_PROTOCOL_##N: \
+ if (a->busy_##n##_port_refcounts[port_host_byte_order]) \
+ return VNET_API_ERROR_INSTANCE_IN_USE; \
+ ++a->busy_##n##_port_refcounts[port_host_byte_order]; \
+ a->busy_##n##_ports_per_thread[thread_index]++; \
+ a->busy_##n##_ports++; \
+ return 0;
+ foreach_snat_protocol
+#undef _
+ default:
+ nat_elog_info ("unknown protocol");
+ return 1;
+ }
+ }
+
+ return VNET_API_ERROR_NO_SUCH_ENTRY;
+}
+
+int
+snat_static_mapping_match (snat_main_t * sm,
+ snat_session_key_t match,
+ snat_session_key_t * mapping,
+ u8 by_external,
+ u8 * is_addr_only,
+ twice_nat_type_t * twice_nat,
+ lb_nat_type_t * lb, ip4_address_t * ext_host_addr,
+ u8 * is_identity_nat)
+{
+ 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, *tmp = 0, i;
+ u8 backend_index;
+ nat44_lb_addr_port_t *local;
+
+ m_key.fib_index = match.fib_index;
+ if (by_external)
+ {
+ mapping_hash = &sm->static_mapping_by_external;
+ m_key.fib_index = 0;
+ }
+
+ m_key.addr = match.addr;
m_key.port = clib_net_to_host_u16 (match.port);
m_key.protocol = match.protocol;
- m_key.fib_index = match.fib_index;
kv.key = m_key.as_u64;
m_key.protocol = 0;
kv.key = m_key.as_u64;
if (clib_bihash_search_8_8 (mapping_hash, &kv, &value))
- return 1;
+ return 1;
}
m = pool_elt_at_index (sm->static_mappings, value.value);
if (by_external)
{
- if (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);
- }
+ if (is_lb_static_mapping (m))
+ {
+ if (PREDICT_FALSE (lb != 0))
+ *lb = m->affinity ? AFFINITY_LB_NAT : LB_NAT;
+ if (m->affinity && !nat_affinity_find_and_lock (ext_host_addr[0],
+ match.addr,
+ match.protocol,
+ match.port,
+ &backend_index))
+ {
+ local = pool_elt_at_index (m->locals, backend_index);
+ mapping->addr = local->addr;
+ mapping->port = clib_host_to_net_u16 (local->port);
+ mapping->fib_index = local->fib_index;
+ goto end;
+ }
+ // pick locals matching this worker
+ if (PREDICT_FALSE (sm->num_workers > 1))
+ {
+ u32 thread_index = vlib_get_thread_index ();
+ /* *INDENT-OFF* */
+ pool_foreach_index (i, m->locals,
+ ({
+ local = pool_elt_at_index (m->locals, i);
+
+ ip4_header_t ip = {
+ .src_address = local->addr,
+ };
+
+ if (sm->worker_in2out_cb (&ip, m->fib_index, 0) ==
+ thread_index)
+ {
+ vec_add1 (tmp, i);
+ }
+ }));
+ /* *INDENT-ON* */
+ ASSERT (vec_len (tmp) != 0);
+ }
+ else
+ {
+ /* *INDENT-OFF* */
+ pool_foreach_index (i, m->locals,
+ ({
+ vec_add1 (tmp, i);
+ }));
+ /* *INDENT-ON* */
+ }
+ hi = vec_len (tmp) - 1;
+ local = pool_elt_at_index (m->locals, tmp[hi]);
+ rand = 1 + (random_u32 (&sm->random_seed) % local->prefix);
+ while (lo < hi)
+ {
+ mid = ((hi - lo) >> 1) + lo;
+ local = pool_elt_at_index (m->locals, tmp[mid]);
+ (rand > local->prefix) ? (lo = mid + 1) : (hi = mid);
+ }
+ local = pool_elt_at_index (m->locals, tmp[lo]);
+ if (!(local->prefix >= rand))
+ return 1;
+ mapping->addr = local->addr;
+ mapping->port = clib_host_to_net_u16 (local->port);
+ mapping->fib_index = local->fib_index;
+ if (m->affinity)
+ {
+ if (nat_affinity_create_and_lock (ext_host_addr[0], match.addr,
+ match.protocol, match.port,
+ tmp[lo], m->affinity,
+ m->affinity_per_service_list_head_index))
+ nat_elog_info ("create affinity record failed");
+ }
+ vec_free (tmp);
+ }
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;
+ {
+ if (PREDICT_FALSE (lb != 0))
+ *lb = NO_LB_NAT;
+ mapping->fib_index = m->fib_index;
+ mapping->addr = m->local_addr;
+ /* Address only mapping doesn't change port */
+ mapping->port = is_addr_only_static_mapping (m) ? match.port
+ : clib_host_to_net_u16 (m->local_port);
+ }
mapping->protocol = m->proto;
}
else
{
mapping->addr = m->external_addr;
/* Address only mapping doesn't change port */
- mapping->port = m->addr_only ? match.port
- : clib_host_to_net_u16 (m->external_port);
+ mapping->port = is_addr_only_static_mapping (m) ? match.port
+ : clib_host_to_net_u16 (m->external_port);
mapping->fib_index = sm->outside_fib_index;
}
- if (PREDICT_FALSE(is_addr_only != 0))
- *is_addr_only = m->addr_only;
+end:
+ if (PREDICT_FALSE (is_addr_only != 0))
+ *is_addr_only = is_addr_only_static_mapping (m);
- if (PREDICT_FALSE(twice_nat != 0))
+ if (PREDICT_FALSE (twice_nat != 0))
*twice_nat = m->twice_nat;
+ if (PREDICT_FALSE (is_identity_nat != 0))
+ *is_identity_nat = is_identity_static_mapping (m);
+
return 0;
}
{
snat_main_t *sm = &snat_main;
return min + random_u32 (&sm->random_seed) /
- (random_u32_max() / (max - min + 1) + 1);
+ (random_u32_max () / (max - min + 1) + 1);
}
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)
+ u32 fib_index,
+ u32 thread_index,
+ snat_session_key_t * k,
+ u16 port_per_thread,
+ u32 snat_thread_index)
{
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);
+ return sm->alloc_addr_and_port (addresses, fib_index, thread_index, k,
+ 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)
+ u32 fib_index,
+ u32 thread_index,
+ snat_session_key_t * k,
+ u16 port_per_thread, u32 snat_thread_index)
{
- int i, gi = 0;
+ int i;
snat_address_t *a, *ga = 0;
u32 portnum;
{
a = addresses + i;
switch (k->protocol)
- {
+ {
#define _(N, j, n, s) \
case SNAT_PROTOCOL_##N: \
if (a->busy_##n##_ports_per_thread[thread_index] < port_per_thread) \
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)) \
+ if (a->busy_##n##_port_refcounts[portnum]) \
continue; \
- clib_bitmap_set_no_check (a->busy_##n##_port_bitmap, portnum, 1); \
+ --a->busy_##n##_port_refcounts[portnum]; \
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;
- foreach_snat_protocol
+ foreach_snat_protocol
#undef _
- default:
- clib_warning("unknown protocol");
- return 1;
- }
+ default:
+ nat_elog_info ("unknown protocol");
+ return 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)) \
+ if (a->busy_##n##_port_refcounts[portnum]) \
continue; \
- clib_bitmap_set_no_check (a->busy_##n##_port_bitmap, portnum, 1); \
+ ++a->busy_##n##_port_refcounts[portnum]; \
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");
+ nat_elog_info ("unknown protocol");
return 1;
}
}
/* Totally out of translations to use... */
- snat_ipfix_logging_addresses_exhausted(0);
+ snat_ipfix_logging_addresses_exhausted (thread_index, 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)
+ u32 fib_index,
+ u32 thread_index,
+ snat_session_key_t * k,
+ u16 port_per_thread, u32 snat_thread_index)
{
snat_main_t *sm = &snat_main;
snat_address_t *a = addresses;
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)) \
+ if (a->busy_##n##_port_refcounts[portnum]) \
+ continue; \
+ ++a->busy_##n##_port_refcounts[portnum]; \
+ a->busy_##n##_ports++; \
+ k->addr = a->addr; \
+ k->port = clib_host_to_net_u16 (portnum); \
+ return 0; \
+ } \
+ } \
+ break;
+ foreach_snat_protocol
+#undef _
+ default:
+ nat_elog_info ("unknown protocol");
+ return 1;
+ }
+
+exhausted:
+ /* Totally out of translations to use... */
+ snat_ipfix_logging_addresses_exhausted (thread_index, 0);
+ return 1;
+}
+
+static int
+nat_alloc_addr_and_port_range (snat_address_t * addresses,
+ u32 fib_index,
+ u32 thread_index,
+ snat_session_key_t * k,
+ u16 port_per_thread, u32 snat_thread_index)
+{
+ snat_main_t *sm = &snat_main;
+ snat_address_t *a = addresses;
+ u16 portnum, ports;
+
+ ports = sm->end_port - sm->start_port + 1;
+
+ 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) \
+ { \
+ portnum = snat_random_port(sm->start_port, sm->end_port); \
+ if (a->busy_##n##_port_refcounts[portnum]) \
continue; \
- clib_bitmap_set_no_check (a->busy_##n##_port_bitmap, portnum, 1); \
+ ++a->busy_##n##_port_refcounts[portnum]; \
a->busy_##n##_ports++; \
k->addr = a->addr; \
k->port = clib_host_to_net_u16 (portnum); \
- *address_indexp = i; \
return 0; \
} \
} \
foreach_snat_protocol
#undef _
default:
- clib_warning("unknown protocol");
+ nat_elog_info ("unknown protocol");
return 1;
}
exhausted:
/* Totally out of translations to use... */
- snat_ipfix_logging_addresses_exhausted(0);
+ snat_ipfix_logging_addresses_exhausted (thread_index, 0);
return 1;
}
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);
+ fib_table_entry_special_dpo_add (0, &pfx, nat_fib_src_hi,
+ FIB_ENTRY_FLAG_EXCLUSIVE, &dpo_v4);
dpo_reset (&dpo_v4);
}
else
{
- fib_table_entry_special_remove (0, &pfx, FIB_SOURCE_PLUGIN_HI);
+ fib_table_entry_special_remove (0, &pfx, nat_fib_src_hi);
}
}
-uword
-unformat_snat_protocol (unformat_input_t * input, va_list * args)
+u8 *
+format_session_kvp (u8 * s, va_list * args)
{
- u32 *r = va_arg (*args, u32 *);
+ clib_bihash_kv_8_8_t *v = va_arg (*args, clib_bihash_kv_8_8_t *);
+ snat_session_key_t k;
- if (0);
-#define _(N, i, n, s) else if (unformat (input, s)) *r = SNAT_PROTOCOL_##N;
- foreach_snat_protocol
-#undef _
- else
- return 0;
- return 1;
+ k.as_u64 = v->key;
+
+ s = format (s, "%U session-index %llu", format_snat_key, &k, v->value);
+
+ return s;
}
u8 *
-format_snat_protocol (u8 * s, va_list * args)
+format_static_mapping_kvp (u8 * s, va_list * args)
{
- u32 i = va_arg (*args, u32);
- u8 *t = 0;
+ clib_bihash_kv_8_8_t *v = va_arg (*args, clib_bihash_kv_8_8_t *);
+ snat_session_key_t k;
+
+ k.as_u64 = v->key;
+
+ s = format (s, "%U static-mapping-index %llu",
+ format_static_mapping_key, &k, v->value);
+
+ return s;
+}
+
+u8 *
+format_user_kvp (u8 * s, va_list * args)
+{
+ clib_bihash_kv_8_8_t *v = va_arg (*args, clib_bihash_kv_8_8_t *);
+ snat_user_key_t k;
+
+ k.as_u64 = v->key;
+
+ s = format (s, "%U fib %d user-index %llu", format_ip4_address, &k.addr,
+ k.fib_index, v->value);
+
+ return s;
+}
+
+u8 *
+format_ed_session_kvp (u8 * s, va_list * args)
+{
+ clib_bihash_kv_16_8_t *v = va_arg (*args, clib_bihash_kv_16_8_t *);
+ nat_ed_ses_key_t k;
+
+ k.as_u64[0] = v->key[0];
+ k.as_u64[1] = v->key[1];
+
+ s =
+ format (s, "local %U:%d remote %U:%d proto %U fib %d session-index %llu",
+ format_ip4_address, &k.l_addr, clib_net_to_host_u16 (k.l_port),
+ format_ip4_address, &k.r_addr, clib_net_to_host_u16 (k.r_port),
+ format_ip_protocol, k.proto, k.fib_index, v->value);
- switch (i)
- {
-#define _(N, j, n, str) case SNAT_PROTOCOL_##N: t = (u8 *) str; break;
- foreach_snat_protocol
-#undef _
- default:
- s = format (s, "unknown");
- return s;
- }
- s = format (s, "%s", t);
return s;
}
static u32
-snat_get_worker_in2out_cb (ip4_header_t * ip0, u32 rx_fib_index0)
+snat_get_worker_in2out_cb (ip4_header_t * ip0, u32 rx_fib_index0,
+ u8 is_output)
{
snat_main_t *sm = &snat_main;
u32 next_worker_index = 0;
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);
+ (ip0->src_address.as_u32 >> 16) + (ip0->src_address.as_u32 >> 24);
if (PREDICT_TRUE (is_pow2 (_vec_len (sm->workers))))
next_worker_index += sm->workers[hash & (_vec_len (sm->workers) - 1)];
}
static u32
-snat_get_worker_out2in_cb (ip4_header_t * ip0, u32 rx_fib_index0)
+snat_get_worker_out2in_cb (vlib_buffer_t * b, ip4_header_t * ip0,
+ u32 rx_fib_index0, u8 is_output)
{
snat_main_t *sm = &snat_main;
udp_header_t *udp;
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;
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;
- }
+ 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->workers[0];
+ }
}
proto = ip_proto_to_snat_proto (ip0->protocol);
udp = ip4_next_header (ip0);
port = udp->dst_port;
- if (PREDICT_FALSE (ip4_is_fragment (ip0)))
- {
- if (PREDICT_FALSE (nat_reass_is_drop_frag (0)))
- return vlib_get_thread_index ();
-
- 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))
- {
- for (i = 0; i < _vec_len (sm->per_thread_data); i++)
- {
- 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 */
+ /* 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;
+ icmp46_header_t *icmp = (icmp46_header_t *) udp;
+ icmp_echo_header_t *echo = (icmp_echo_header_t *) (icmp + 1);
+ if (!icmp_type_is_error_message
+ (vnet_buffer (b)->ip.reass.icmp_type_or_tcp_flags))
+ port = vnet_buffer (b)->ip.reass.l4_src_port;
else
- {
- 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 ();
- }
- }
+ {
+ /* if error message, then it's not fragmented and we can access it */
+ ip4_header_t *inner_ip = (ip4_header_t *) (echo + 1);
+ proto = ip_proto_to_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 ();
+ }
+ }
}
/* try static mappings with 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;
- }
+ 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->workers[0];
+ }
}
/* worker by outside port */
return next_worker_index;
}
-static clib_error_t *
-snat_config (vlib_main_t * vm, unformat_input_t * input)
+static u32
+nat44_ed_get_worker_in2out_cb (ip4_header_t * ip, u32 rx_fib_index,
+ u8 is_output)
{
- snat_main_t * sm = &snat_main;
- u32 translation_buckets = 1024;
- u32 translation_memory_size = 128<<20;
- u32 user_buckets = 128;
- u32 user_memory_size = 64<<20;
- u32 max_translations_per_user = 100;
- u32 outside_vrf_id = 0;
- 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;
+ snat_main_t *sm = &snat_main;
+ u32 next_worker_index = sm->first_worker_index;
+ u32 hash;
- sm->deterministic = 0;
- sm->out2in_dpo = 0;
+ clib_bihash_kv_16_8_t kv16, value16;
+ snat_main_per_thread_data_t *tsm;
+ udp_header_t *udp;
- while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
+ if (PREDICT_FALSE (is_output))
{
- if (unformat (input, "translation hash buckets %d", &translation_buckets))
- ;
- else if (unformat (input, "translation hash memory %d",
- &translation_memory_size));
- else if (unformat (input, "user hash buckets %d", &user_buckets))
- ;
- 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, "inside VRF id %d",
- &inside_vrf_id))
- ;
- else if (unformat (input, "static mapping only"))
+ u32 fib_index = sm->outside_fib_index;
+ nat_outside_fib_t *outside_fib;
+ fib_node_index_t fei = FIB_NODE_INDEX_INVALID;
+ fib_prefix_t pfx = {
+ .fp_proto = FIB_PROTOCOL_IP4,
+ .fp_len = 32,
+ .fp_addr = {
+ .ip4.as_u32 = ip->dst_address.as_u32,
+ }
+ ,
+ };
+
+ udp = ip4_next_header (ip);
+
+ switch (vec_len (sm->outside_fibs))
+ {
+ case 0:
+ fib_index = sm->outside_fib_index;
+ break;
+ case 1:
+ fib_index = sm->outside_fibs[0].fib_index;
+ break;
+ default:
+ /* *INDENT-OFF* */
+ vec_foreach (outside_fib, sm->outside_fibs)
+ {
+ fei = fib_table_lookup (outside_fib->fib_index, &pfx);
+ if (FIB_NODE_INDEX_INVALID != fei)
+ {
+ if (fib_entry_get_resolving_interface (fei) != ~0)
+ {
+ fib_index = outside_fib->fib_index;
+ break;
+ }
+ }
+ }
+ /* *INDENT-ON* */
+ break;
+ }
+
+ make_ed_kv (&kv16, &ip->src_address, &ip->dst_address,
+ ip->protocol, fib_index, udp->src_port, udp->dst_port);
+
+ /* *INDENT-OFF* */
+ vec_foreach (tsm, sm->per_thread_data)
{
- static_mapping_only = 1;
- if (unformat (input, "connection tracking"))
- static_mapping_connection_tracking = 1;
+ if (PREDICT_TRUE (!clib_bihash_search_16_8 (&tsm->out2in_ed,
+ &kv16, &value16)))
+ {
+ next_worker_index += tsm->thread_index;
+
+ nat_elog_debug_handoff (
+ "HANDOFF IN2OUT-OUTPUT-FEATURE (session)",
+ next_worker_index, fib_index,
+ clib_net_to_host_u32 (ip->src_address.as_u32),
+ clib_net_to_host_u32 (ip->dst_address.as_u32));
+
+ return next_worker_index;
+ }
}
- 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);
+ /* *INDENT-ON* */
}
- /* 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,
- 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,
- FIB_SOURCE_PLUGIN_HI);
- sm->static_mapping_only = static_mapping_only;
- sm->static_mapping_connection_tracking = static_mapping_connection_tracking;
+ hash = ip->src_address.as_u32 + (ip->src_address.as_u32 >> 8) +
+ (ip->src_address.as_u32 >> 16) + (ip->src_address.as_u32 >> 24);
- nat64_set_hash(nat64_bib_buckets, nat64_bib_memory_size, nat64_st_buckets,
- nat64_st_memory_size);
+ if (PREDICT_TRUE (is_pow2 (_vec_len (sm->workers))))
+ next_worker_index += sm->workers[hash & (_vec_len (sm->workers) - 1)];
+ else
+ next_worker_index += sm->workers[hash % _vec_len (sm->workers)];
- if (sm->deterministic)
+ if (PREDICT_TRUE (!is_output))
{
- 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;
+ nat_elog_debug_handoff ("HANDOFF IN2OUT",
+ next_worker_index, rx_fib_index,
+ clib_net_to_host_u32 (ip->src_address.as_u32),
+ clib_net_to_host_u32 (ip->dst_address.as_u32));
}
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;
- if (!static_mapping_only ||
- (static_mapping_only && static_mapping_connection_tracking))
- {
- sm->icmp_match_in2out_cb = icmp_match_in2out_slow;
- sm->icmp_match_out2in_cb = icmp_match_out2in_slow;
+ nat_elog_debug_handoff ("HANDOFF IN2OUT-OUTPUT-FEATURE",
+ next_worker_index, rx_fib_index,
+ clib_net_to_host_u32 (ip->src_address.as_u32),
+ clib_net_to_host_u32 (ip->dst_address.as_u32));
+ }
- vec_foreach (tsm, sm->per_thread_data)
- {
- clib_bihash_init_8_8 (&tsm->in2out, "in2out", translation_buckets,
- translation_memory_size);
+ return next_worker_index;
+}
- clib_bihash_init_8_8 (&tsm->out2in, "out2in", translation_buckets,
- translation_memory_size);
+static u32
+nat44_ed_get_worker_out2in_cb (vlib_buffer_t * b, ip4_header_t * ip,
+ u32 rx_fib_index, u8 is_output)
+{
+ snat_main_t *sm = &snat_main;
+ clib_bihash_kv_8_8_t kv, value;
+ clib_bihash_kv_16_8_t kv16, value16;
+ snat_main_per_thread_data_t *tsm;
- clib_bihash_init_8_8 (&tsm->user_hash, "users", user_buckets,
- user_memory_size);
- }
+ u32 proto, next_worker_index = 0;
+ udp_header_t *udp;
+ u16 port;
+ snat_static_mapping_t *m;
+ u32 hash;
- clib_bihash_init_16_8 (&sm->in2out_ed, "in2out-ed",
- translation_buckets, translation_memory_size);
+ proto = ip_proto_to_snat_proto (ip->protocol);
- clib_bihash_init_16_8 (&sm->out2in_ed, "out2in-ed",
- translation_buckets, translation_memory_size);
- }
- 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);
+ if (PREDICT_TRUE (proto == SNAT_PROTOCOL_UDP || proto == SNAT_PROTOCOL_TCP))
+ {
+ udp = ip4_next_header (ip);
- clib_bihash_init_8_8 (&sm->static_mapping_by_external,
- "static_mapping_by_external", static_mapping_buckets,
- static_mapping_memory_size);
- }
+ make_ed_kv (&kv16, &ip->dst_address, &ip->src_address,
+ ip->protocol, rx_fib_index, udp->dst_port, udp->src_port);
- return 0;
-}
+ /* *INDENT-OFF* */
+ vec_foreach (tsm, sm->per_thread_data)
+ {
+ if (PREDICT_TRUE (!clib_bihash_search_16_8 (&tsm->out2in_ed,
+ &kv16, &value16)))
+ {
+ next_worker_index = sm->first_worker_index + tsm->thread_index;
+ nat_elog_debug_handoff ("HANDOFF OUT2IN (session)",
+ next_worker_index, rx_fib_index,
+ clib_net_to_host_u32 (ip->src_address.as_u32),
+ clib_net_to_host_u32 (ip->dst_address.as_u32));
+ return next_worker_index;
+ }
+ }
+ /* *INDENT-ON* */
+ }
+ else if (proto == SNAT_PROTOCOL_ICMP)
+ {
+ nat_ed_ses_key_t key;
-VLIB_CONFIG_FUNCTION (snat_config, "nat");
+ if (!get_icmp_o2i_ed_key (b, ip, &key))
+ {
+
+ key.fib_index = rx_fib_index;
+ kv16.key[0] = key.as_u64[0];
+ kv16.key[1] = key.as_u64[1];
+
+ /* *INDENT-OFF* */
+ vec_foreach (tsm, sm->per_thread_data)
+ {
+ if (PREDICT_TRUE (!clib_bihash_search_16_8 (&tsm->out2in_ed,
+ &kv16, &value16)))
+ {
+ next_worker_index = sm->first_worker_index +
+ tsm->thread_index;
+ nat_elog_debug_handoff ("HANDOFF OUT2IN (session)",
+ next_worker_index, rx_fib_index,
+ clib_net_to_host_u32 (ip->src_address.as_u32),
+ clib_net_to_host_u32 (ip->dst_address.as_u32));
+ return next_worker_index;
+ }
+ }
+ /* *INDENT-ON* */
+ }
+ }
+
+ /* first try static mappings without port */
+ if (PREDICT_FALSE (pool_elts (sm->static_mappings)))
+ {
+ make_sm_kv (&kv, &ip->dst_address, 0, 0, 0);
+ if (!clib_bihash_search_8_8
+ (&sm->static_mapping_by_external, &kv, &value))
+ {
+ m = pool_elt_at_index (sm->static_mappings, value.value);
+ next_worker_index = m->workers[0];
+ goto done;
+ }
+ }
+
+ /* unknown protocol */
+ if (PREDICT_FALSE (proto == ~0))
+ {
+ /* use current thread */
+ next_worker_index = vlib_get_thread_index ();
+ goto done;
+ }
+
+ udp = ip4_next_header (ip);
+ port = udp->dst_port;
+
+ if (PREDICT_FALSE (ip->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_type_is_error_message
+ (vnet_buffer (b)->ip.reass.icmp_type_or_tcp_flags))
+ port = vnet_buffer (b)->ip.reass.l4_src_port;
+ else
+ {
+ /* if error message, then it's not fragmented and we can access it */
+ ip4_header_t *inner_ip = (ip4_header_t *) (echo + 1);
+ proto = ip_proto_to_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:
+ next_worker_index = vlib_get_thread_index ();
+ goto done;
+ }
+ }
+ }
+
+ /* try static mappings with port */
+ if (PREDICT_FALSE (pool_elts (sm->static_mappings)))
+ {
+ make_sm_kv (&kv, &ip->dst_address, proto, 0,
+ clib_net_to_host_u16 (port));
+ if (!clib_bihash_search_8_8
+ (&sm->static_mapping_by_external, &kv, &value))
+ {
+ m = pool_elt_at_index (sm->static_mappings, value.value);
+ if (!is_lb_static_mapping (m))
+ {
+ next_worker_index = m->workers[0];
+ goto done;
+ }
+
+ hash = ip->src_address.as_u32 + (ip->src_address.as_u32 >> 8) +
+ (ip->src_address.as_u32 >> 16) + (ip->src_address.as_u32 >> 24);
+
+ if (PREDICT_TRUE (is_pow2 (_vec_len (m->workers))))
+ next_worker_index =
+ m->workers[hash & (_vec_len (m->workers) - 1)];
+ else
+ next_worker_index = m->workers[hash % _vec_len (m->workers)];
+ goto done;
+ }
+ }
+
+ /* 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];
-u8 * format_snat_session_state (u8 * s, va_list * args)
+done:
+ nat_elog_debug_handoff ("HANDOFF OUT2IN", next_worker_index, rx_fib_index,
+ clib_net_to_host_u32 (ip->src_address.as_u32),
+ clib_net_to_host_u32 (ip->dst_address.as_u32));
+ return next_worker_index;
+}
+
+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)
{
- u32 i = va_arg (*args, u32);
- u8 *t = 0;
+ snat_main_t *sm = &snat_main;
+ snat_session_key_t key;
+ snat_user_t *u;
+ snat_session_t *s;
+ clib_bihash_kv_8_8_t kv;
+ f64 now = vlib_time_now (sm->vlib_main);
+ nat_outside_fib_t *outside_fib;
+ fib_node_index_t fei = FIB_NODE_INDEX_INVALID;
+ snat_main_per_thread_data_t *tsm;
+ fib_prefix_t pfx = {
+ .fp_proto = FIB_PROTOCOL_IP4,
+ .fp_len = 32,
+ .fp_addr = {
+ .ip4.as_u32 = eh_addr->as_u32,
+ },
+ };
- switch (i)
+ tsm = vec_elt_at_index (sm->per_thread_data, thread_index);
+
+ key.addr.as_u32 = out_addr->as_u32;
+ key.port = out_port;
+ key.protocol = proto;
+
+ if (!(flags & SNAT_SESSION_FLAG_STATIC_MAPPING))
{
-#define _(v, N, str) case SNAT_SESSION_##N: t = (u8 *) str; break;
- foreach_snat_session_state
-#undef _
+ if (nat_set_outside_address_and_port
+ (sm->addresses, thread_index, &key))
+ return;
+ }
+
+ u = nat_user_get_or_create (sm, in_addr, fib_index, thread_index);
+ if (!u)
+ return;
+
+ s = nat_session_alloc_or_recycle (sm, u, thread_index, now);
+ if (!s)
+ return;
+
+ s->last_heard = now;
+ s->flags = flags;
+ s->ext_host_addr.as_u32 = eh_addr->as_u32;
+ s->ext_host_port = eh_port;
+ user_session_increment (sm, u, snat_is_session_static (s));
+ switch (vec_len (sm->outside_fibs))
+ {
+ case 0:
+ key.fib_index = sm->outside_fib_index;
+ break;
+ case 1:
+ key.fib_index = sm->outside_fibs[0].fib_index;
+ break;
default:
- t = format (t, "unknown");
+ /* *INDENT-OFF* */
+ vec_foreach (outside_fib, sm->outside_fibs)
+ {
+ fei = fib_table_lookup (outside_fib->fib_index, &pfx);
+ if (FIB_NODE_INDEX_INVALID != fei)
+ {
+ if (fib_entry_get_resolving_interface (fei) != ~0)
+ {
+ key.fib_index = outside_fib->fib_index;
+ break;
+ }
+ }
+ }
+ /* *INDENT-ON* */
+ break;
}
- s = format (s, "%s", t);
- return s;
+ s->out2in = key;
+ kv.key = key.as_u64;
+ kv.value = s - tsm->sessions;
+ if (clib_bihash_add_del_8_8 (&tsm->out2in, &kv, 1))
+ nat_elog_warn ("out2in key add failed");
+
+ key.addr.as_u32 = in_addr->as_u32;
+ key.port = in_port;
+ key.fib_index = fib_index;
+ s->in2out = key;
+ kv.key = key.as_u64;
+ if (clib_bihash_add_del_8_8 (&tsm->in2out, &kv, 1))
+ nat_elog_warn ("in2out key add failed");
}
-u8 * format_snat_key (u8 * s, va_list * args)
+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)
{
- snat_session_key_t * key = va_arg (*args, snat_session_key_t *);
+ snat_main_t *sm = &snat_main;
+ snat_session_key_t key;
+ clib_bihash_kv_8_8_t kv, value;
+ u32 thread_index;
+ snat_session_t *s;
+ snat_main_per_thread_data_t *tsm;
- 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 (sm->num_workers > 1)
+ thread_index =
+ sm->first_worker_index +
+ (sm->workers[(clib_net_to_host_u16 (out_port) -
+ 1024) / sm->port_per_thread]);
+ else
+ thread_index = sm->num_workers;
+ tsm = vec_elt_at_index (sm->per_thread_data, thread_index);
+
+ key.addr.as_u32 = out_addr->as_u32;
+ key.port = out_port;
+ key.protocol = proto;
+ key.fib_index = fib_index;
+ kv.key = key.as_u64;
+ if (clib_bihash_search_8_8 (&tsm->out2in, &kv, &value))
+ return;
+
+ s = pool_elt_at_index (tsm->sessions, value.value);
+ nat_free_session_data (sm, s, thread_index, 1);
+ nat44_delete_session (sm, s, thread_index);
}
-u8 * format_snat_session (u8 * s, va_list * args)
+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)
{
- snat_main_t * sm __attribute__((unused)) = va_arg (*args, snat_main_t *);
- snat_session_t * sess = va_arg (*args, snat_session_t *);
+ snat_main_t *sm = &snat_main;
+ snat_session_key_t key;
+ clib_bihash_kv_8_8_t kv, value;
+ snat_session_t *s;
+ snat_main_per_thread_data_t *tsm;
+
+ tsm = vec_elt_at_index (sm->per_thread_data, thread_index);
+
+ key.addr.as_u32 = out_addr->as_u32;
+ key.port = out_port;
+ key.protocol = proto;
+ key.fib_index = fib_index;
+ kv.key = key.as_u64;
+ if (clib_bihash_search_8_8 (&tsm->out2in, &kv, &value))
+ return;
- if (snat_is_unk_proto_session (sess))
+ s = pool_elt_at_index (tsm->sessions, value.value);
+ s->total_pkts = total_pkts;
+ s->total_bytes = total_bytes;
+}
+
+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)
+{
+ snat_main_t *sm = &snat_main;
+ snat_session_key_t key;
+ snat_user_t *u;
+ snat_session_t *s;
+ clib_bihash_kv_16_8_t kv;
+ f64 now = vlib_time_now (sm->vlib_main);
+ nat_outside_fib_t *outside_fib;
+ fib_node_index_t fei = FIB_NODE_INDEX_INVALID;
+ snat_main_per_thread_data_t *tsm;
+ fib_prefix_t pfx = {
+ .fp_proto = FIB_PROTOCOL_IP4,
+ .fp_len = 32,
+ .fp_addr = {
+ .ip4.as_u32 = eh_addr->as_u32,
+ },
+ };
+
+ tsm = vec_elt_at_index (sm->per_thread_data, thread_index);
+
+ key.addr.as_u32 = out_addr->as_u32;
+ key.port = out_port;
+ key.protocol = proto;
+
+ if (!(flags & SNAT_SESSION_FLAG_STATIC_MAPPING))
{
- s = format (s, " i2o %U proto %u fib %u\n",
- 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,
- clib_net_to_host_u16 (sess->out2in.port),
- sess->out2in.fib_index);
+ if (nat_set_outside_address_and_port
+ (sm->addresses, thread_index, &key))
+ return;
}
- else
+
+ key.addr.as_u32 = ehn_addr->as_u32;
+ key.port = ehn_port;
+ if (flags & SNAT_SESSION_FLAG_TWICE_NAT)
{
- s = format (s, " i2o %U\n", format_snat_key, &sess->in2out);
- s = format (s, " o2i %U\n", format_snat_key, &sess->out2in);
+ if (nat_set_outside_address_and_port
+ (sm->twice_nat_addresses, thread_index, &key))
+ return;
}
- if (is_twice_nat_session (sess))
+
+ u = nat_user_get_or_create (sm, in_addr, fib_index, thread_index);
+ if (!u)
+ return;
+
+ s = nat_ed_session_alloc (sm, u, thread_index, now);
+ if (!s)
+ return;
+
+ s->last_heard = now;
+ s->flags = flags;
+ s->ext_host_nat_addr.as_u32 = s->ext_host_addr.as_u32 = eh_addr->as_u32;
+ s->ext_host_nat_port = s->ext_host_port = eh_port;
+ if (is_twice_nat_session (s))
{
- 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));
+ s->ext_host_nat_addr.as_u32 = ehn_addr->as_u32;
+ s->ext_host_nat_port = ehn_port;
}
- else
+ user_session_increment (sm, u, snat_is_session_static (s));
+ switch (vec_len (sm->outside_fibs))
{
- if (sess->ext_host_addr.as_u32)
- s = format (s, " external host %U\n",
- format_ip4_address, &sess->ext_host_addr);
+ case 0:
+ key.fib_index = sm->outside_fib_index;
+ break;
+ case 1:
+ key.fib_index = sm->outside_fibs[0].fib_index;
+ break;
+ default:
+ /* *INDENT-OFF* */
+ vec_foreach (outside_fib, sm->outside_fibs)
+ {
+ fei = fib_table_lookup (outside_fib->fib_index, &pfx);
+ if (FIB_NODE_INDEX_INVALID != fei)
+ {
+ if (fib_entry_get_resolving_interface (fei) != ~0)
+ {
+ key.fib_index = outside_fib->fib_index;
+ break;
+ }
+ }
+ }
+ /* *INDENT-ON* */
+ break;
}
- 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);
- if (snat_is_session_static (sess))
- s = format (s, " static translation\n");
+ key.addr.as_u32 = out_addr->as_u32;
+ key.port = out_port;
+ s->out2in = key;
+ kv.value = s - tsm->sessions;
+
+ key.addr.as_u32 = in_addr->as_u32;
+ key.port = in_port;
+ key.fib_index = fib_index;
+ s->in2out = key;
+
+ make_ed_kv (&kv, in_addr, &s->ext_host_nat_addr,
+ snat_proto_to_ip_proto (proto), fib_index, in_port,
+ s->ext_host_nat_port);
+ if (clib_bihash_add_del_16_8 (&tsm->in2out_ed, &kv, 1))
+ nat_elog_warn ("in2out key add failed");
+
+ make_ed_kv (&kv, out_addr, eh_addr, snat_proto_to_ip_proto (proto),
+ s->out2in.fib_index, out_port, eh_port);
+ if (clib_bihash_add_del_16_8 (&tsm->out2in_ed, &kv, 1))
+ nat_elog_warn ("out2in key add failed");
+}
+
+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)
+{
+ snat_main_t *sm = &snat_main;
+ nat_ed_ses_key_t key;
+ clib_bihash_kv_16_8_t kv, value;
+ u32 thread_index;
+ snat_session_t *s;
+ snat_main_per_thread_data_t *tsm;
+
+ if (sm->num_workers > 1)
+ thread_index =
+ sm->first_worker_index +
+ (sm->workers[(clib_net_to_host_u16 (out_port) -
+ 1024) / sm->port_per_thread]);
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");
+ thread_index = sm->num_workers;
+ tsm = vec_elt_at_index (sm->per_thread_data, thread_index);
+
+ key.l_addr.as_u32 = out_addr->as_u32;
+ key.l_port = out_port;
+ key.r_addr.as_u32 = eh_addr->as_u32;
+ key.r_port = eh_port;
+ key.proto = proto;
+ key.fib_index = fib_index;
+ kv.key[0] = key.as_u64[0];
+ kv.key[1] = key.as_u64[1];
+ if (clib_bihash_search_16_8 (&tsm->out2in_ed, &kv, &value))
+ return;
- return s;
+ s = pool_elt_at_index (tsm->sessions, value.value);
+ nat_free_session_data (sm, s, thread_index, 1);
+ nat44_delete_session (sm, s, thread_index);
}
-u8 * format_snat_user (u8 * s, va_list * args)
+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)
{
- snat_main_per_thread_data_t * sm = va_arg (*args, snat_main_per_thread_data_t *);
- snat_user_t * u = va_arg (*args, snat_user_t *);
- int verbose = va_arg (*args, int);
- dlist_elt_t * head, * elt;
- u32 elt_index, head_index;
- u32 session_index;
- snat_session_t * sess;
+ snat_main_t *sm = &snat_main;
+ nat_ed_ses_key_t key;
+ clib_bihash_kv_16_8_t kv, value;
+ snat_session_t *s;
+ snat_main_per_thread_data_t *tsm;
- s = format (s, "%U: %d dynamic translations, %d static translations\n",
- format_ip4_address, &u->addr, u->nsessions, u->nstaticsessions);
+ tsm = vec_elt_at_index (sm->per_thread_data, thread_index);
- if (verbose == 0)
- return s;
+ key.l_addr.as_u32 = out_addr->as_u32;
+ key.l_port = out_port;
+ key.r_addr.as_u32 = eh_addr->as_u32;
+ key.r_port = eh_port;
+ key.proto = proto;
+ key.fib_index = fib_index;
+ kv.key[0] = key.as_u64[0];
+ kv.key[1] = key.as_u64[1];
+ if (clib_bihash_search_16_8 (&tsm->out2in_ed, &kv, &value))
+ return;
- if (u->nsessions || u->nstaticsessions)
- {
- head_index = u->sessions_per_user_list_head_index;
- head = pool_elt_at_index (sm->list_pool, head_index);
+ s = pool_elt_at_index (tsm->sessions, value.value);
+ s->total_pkts = total_pkts;
+ s->total_bytes = total_bytes;
+}
- elt_index = head->next;
- elt = pool_elt_at_index (sm->list_pool, elt_index);
- session_index = elt->value;
+static clib_error_t *
+snat_config (vlib_main_t * vm, unformat_input_t * input)
+{
+ snat_main_t *sm = &snat_main;
+ nat66_main_t *nm = &nat66_main;
+ //dslite_main_t *dm = &dslite_main;
+ snat_main_per_thread_data_t *tsm;
- while (session_index != ~0)
- {
- sess = pool_elt_at_index (sm->sessions, session_index);
+ u32 static_mapping_buckets = 1024;
+ uword static_mapping_memory_size = 64 << 20;
- s = format (s, " %U\n", format_snat_session, sm, sess);
+ u32 nat64_bib_buckets = 1024;
+ u32 nat64_bib_memory_size = 128 << 20;
- elt_index = elt->next;
- elt = pool_elt_at_index (sm->list_pool, elt_index);
- session_index = elt->value;
- }
+ u32 nat64_st_buckets = 2048;
+ uword nat64_st_memory_size = 256 << 20;
+
+ u32 user_buckets = 128;
+ uword user_memory_size = 64 << 20;
+ u32 translation_buckets = 1024;
+ uword translation_memory_size = 128 << 20;
+
+ 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;
+
+ // configurable timeouts
+ 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, "translation hash buckets %d", &translation_buckets))
+ ;
+ 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, "user hash buckets %d", &user_buckets))
+ ;
+ 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, "dslite ce"))
+ //dslite_set_ce (dm, 1);
+ else if (unformat (input, "endpoint-dependent"))
+ sm->endpoint_dependent = 1;
+ else
+ return clib_error_return (0, "unknown input '%U'",
+ format_unformat_error, input);
}
- return s;
-}
+ if (sm->deterministic && sm->endpoint_dependent)
+ return clib_error_return (0,
+ "deterministic and endpoint-dependent modes are mutually exclusive");
-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 (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");
+
+ /* 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 (m->addr_only)
- 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->twice_nat ? "twice-nat" : "");
+ sm->min_timeout = nat44_minimal_timeout (sm);
+
+ sm->user_buckets = user_buckets;
+ sm->user_memory_size = user_memory_size;
+
+ 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->max_translations_per_user = max_translations_per_user == ~0 ?
+ sm->max_translations : 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);
+ nm->outside_vrf_id = outside_ip6_vrf_id;
+ nm->outside_fib_index = fib_table_find_or_create_and_lock (FIB_PROTOCOL_IP6,
+ outside_ip6_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 (vec_len (m->locals))
- {
- s = format (s, "%U vrf %d external %U:%d %s %s",
- format_snat_protocol, m->proto,
- m->vrf_id,
- format_ip4_address, &m->external_addr, m->external_port,
- m->twice_nat ? "twice-nat" : "",
- m->out2in_only ? "out2in-only" : "");
- vec_foreach (local, m->locals)
- s = format (s, "\n local %U:%d probability %d\%",
- format_ip4_address, &local->addr, local->port,
- local->probability);
- }
+ {
+ 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->handoff_out2in_index = nat_pre_out2in_node.index;
+ sm->handoff_in2out_index = nat_pre_in2out_node.index;
+ sm->handoff_in2out_output_index = nat44_ed_in2out_output_node.index;
+
+ 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);
+ }
else
- s = format (s, "%U local %U:%d external %U:%d vrf %d %s %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" : "",
- m->out2in_only ? "out2in-only" : "");
- }
- return s;
-}
+ {
+ sm->worker_in2out_cb = snat_get_worker_in2out_cb;
+ sm->worker_out2in_cb = snat_get_worker_out2in_cb;
+
+ sm->handoff_out2in_index = snat_out2in_node.index;
+ sm->handoff_in2out_index = snat_in2out_node.index;
+ sm->handoff_in2out_output_index = snat_in2out_output_node.index;
+
+ 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)
+ {
+ tsm->min_session_timeout = 0;
-u8 * format_snat_static_map_to_resolve (u8 * s, va_list * args)
-{
- snat_static_map_resolve_t *m = va_arg (*args, snat_static_map_resolve_t *);
- vnet_main_t *vnm = vnet_get_main();
-
- if (m->addr_only)
- s = format (s, "local %U external %U vrf %d",
- format_ip4_address, &m->l_addr,
- format_vnet_sw_if_index_name, vnm, m->sw_if_index,
- m->vrf_id);
- else
- s = format (s, "%U local %U:%d external %U:%d vrf %d",
- format_snat_protocol, m->proto,
- format_ip4_address, &m->l_addr, m->l_port,
- format_vnet_sw_if_index_name, vnm, m->sw_if_index,
- m->e_port, m->vrf_id);
+ tsm->cleared = 0;
+ tsm->cleanup_runs = 0;
+ tsm->cleanup_timeout = 0;
- return s;
+ pool_alloc (tsm->sessions, sm->max_translations);
+ pool_alloc (tsm->list_pool, sm->max_translations);
+ pool_alloc (tsm->global_lru_pool, sm->max_translations);
+
+ dlist_elt_t *head;
+ pool_get (tsm->global_lru_pool, head);
+ tsm->global_lru_head_index = head - tsm->global_lru_pool;
+ clib_dlist_init (tsm->global_lru_pool,
+ tsm->global_lru_head_index);
+
+ if (sm->endpoint_dependent)
+ {
+ clib_bihash_init_16_8 (&tsm->in2out_ed, "in2out-ed",
+ translation_buckets,
+ translation_memory_size);
+ clib_bihash_set_kvp_format_fn_16_8 (&tsm->in2out_ed,
+ format_ed_session_kvp);
+
+ clib_bihash_init_16_8 (&tsm->out2in_ed, "out2in-ed",
+ translation_buckets,
+ translation_memory_size);
+ clib_bihash_set_kvp_format_fn_16_8 (&tsm->out2in_ed,
+ format_ed_session_kvp);
+ clib_bihash_init_16_8
+ (&sm->ed_ext_ports, "ed-nat-5-tuple-port-overload-hash",
+ translation_buckets, translation_memory_size);
+ }
+ else
+ {
+ clib_bihash_init_8_8 (&tsm->in2out, "in2out",
+ translation_buckets,
+ translation_memory_size);
+ clib_bihash_set_kvp_format_fn_8_8 (&tsm->in2out,
+ format_session_kvp);
+
+ clib_bihash_init_8_8 (&tsm->out2in, "out2in",
+ translation_buckets,
+ translation_memory_size);
+ clib_bihash_set_kvp_format_fn_8_8 (&tsm->out2in,
+ format_session_kvp);
+ }
+
+ clib_bihash_init_8_8 (&tsm->user_hash, "users", user_buckets,
+ user_memory_size);
+ clib_bihash_set_kvp_format_fn_8_8 (&tsm->user_hash,
+ format_user_kvp);
+ }
+ /* *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;
}
-u8 * format_det_map_ses (u8 * s, va_list * args)
+VLIB_CONFIG_FUNCTION (snat_config, "nat");
+
+static void
+nat_ip4_add_del_addr_only_sm_cb (ip4_main_t * im,
+ uword opaque,
+ u32 sw_if_index,
+ ip4_address_t * address,
+ u32 address_length,
+ u32 if_address_index, u32 is_delete)
{
- snat_det_map_t * det_map = va_arg (*args, snat_det_map_t *);
- ip4_address_t in_addr, out_addr;
- u32 in_offset, out_offset;
- snat_det_session_t * ses = va_arg (*args, snat_det_session_t *);
- u32 * i = va_arg (*args, u32 *);
-
- u32 user_index = *i / SNAT_DET_SES_PER_USER;
- in_addr.as_u32 = clib_host_to_net_u32 (
- clib_net_to_host_u32(det_map->in_addr.as_u32) + user_index);
- in_offset = clib_net_to_host_u32(in_addr.as_u32) -
- clib_net_to_host_u32(det_map->in_addr.as_u32);
- out_offset = in_offset / det_map->sharing_ratio;
- out_addr.as_u32 = clib_host_to_net_u32(
- clib_net_to_host_u32(det_map->out_addr.as_u32) + out_offset);
- s = format (s, "in %U:%d out %U:%d external host %U:%d state: %U expire: %d\n",
- format_ip4_address, &in_addr,
- clib_net_to_host_u16 (ses->in_port),
- format_ip4_address, &out_addr,
- clib_net_to_host_u16 (ses->out.out_port),
- format_ip4_address, &ses->out.ext_host_addr,
- clib_net_to_host_u16 (ses->out.ext_host_port),
- format_snat_session_state, ses->state,
- ses->expire);
+ snat_main_t *sm = &snat_main;
+ snat_static_map_resolve_t *rp;
+ snat_static_mapping_t *m;
+ snat_session_key_t m_key;
+ clib_bihash_kv_8_8_t kv, value;
+ int i, rv;
+ ip4_address_t l_addr;
- return s;
+ for (i = 0; i < vec_len (sm->to_resolve); i++)
+ {
+ rp = sm->to_resolve + i;
+ if (rp->addr_only == 0)
+ continue;
+ if (rp->sw_if_index == sw_if_index)
+ goto match;
+ }
+
+ return;
+
+match:
+ m_key.addr.as_u32 = address->as_u32;
+ m_key.port = rp->addr_only ? 0 : rp->e_port;
+ m_key.protocol = rp->addr_only ? 0 : rp->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_delete)
+ {
+ /* Don't trip over lease renewal, static config */
+ if (m)
+ return;
+ }
+ else
+ {
+ if (!m)
+ 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, !is_delete, rp->twice_nat,
+ rp->out2in_only, rp->tag, rp->identity_nat);
+ if (rv)
+ nat_elog_notice_X1 ("snat_add_static_mapping returned %d", "i4", rv);
}
static void
snat_ip4_add_del_interface_address_cb (ip4_main_t * im,
- uword opaque,
- u32 sw_if_index,
- ip4_address_t * address,
- u32 address_length,
- u32 if_address_index,
- u32 is_delete)
+ uword opaque,
+ u32 sw_if_index,
+ ip4_address_t * address,
+ u32 address_length,
+ u32 if_address_index, u32 is_delete)
{
snat_main_t *sm = &snat_main;
snat_static_map_resolve_t *rp;
u8 twice_nat = 0;
snat_address_t *addresses = sm->addresses;
- for (i = 0; i < vec_len(sm->auto_add_sw_if_indices); i++)
+ 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;
+ goto match;
}
- for (i = 0; i < vec_len(sm->auto_add_sw_if_indices_twice_nat); i++)
+ 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;
+ goto match;
}
return;
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;
+ 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);
+ (void) snat_add_address (sm, address, ~0, twice_nat);
/* Scan static map resolution vector */
for (j = 0; j < vec_len (sm->to_resolve); j++)
- {
- rp = sm->to_resolve + j;
- /* On this interface? */
- if (rp->sw_if_index == sw_if_index)
- {
- /* Indetity mapping? */
- if (rp->l_addr.as_u32 == 0)
- l_addr.as_u32 = address[0].as_u32;
- else
- l_addr.as_u32 = rp->l_addr.as_u32;
- /* Add the static mapping */
- rv = snat_add_static_mapping (l_addr,
- address[0],
- rp->l_port,
- rp->e_port,
- rp->vrf_id,
- rp->addr_only,
- ~0 /* sw_if_index */,
- rp->proto,
- rp->is_add,
- 0, 0, rp->tag);
- if (rv)
- clib_warning ("snat_add_static_mapping returned %d",
- rv);
- }
- }
+ {
+ rp = sm->to_resolve + j;
+ if (rp->addr_only)
+ continue;
+ /* On this interface? */
+ if (rp->sw_if_index == sw_if_index)
+ {
+ /* Indetity mapping? */
+ if (rp->l_addr.as_u32 == 0)
+ l_addr.as_u32 = address[0].as_u32;
+ else
+ l_addr.as_u32 = rp->l_addr.as_u32;
+ /* Add the static mapping */
+ rv = snat_add_static_mapping (l_addr,
+ address[0],
+ rp->l_port,
+ rp->e_port,
+ rp->vrf_id,
+ rp->addr_only,
+ ~0 /* sw_if_index */ ,
+ rp->proto,
+ rp->is_add, rp->twice_nat,
+ rp->out2in_only, rp->tag,
+ rp->identity_nat);
+ if (rv)
+ nat_elog_notice_X1 ("snat_add_static_mapping returned %d",
+ "i4", rv);
+ }
+ }
return;
}
else
{
- (void) snat_del_address(sm, address[0], 1, twice_nat);
+ (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,
- u8 twice_nat)
+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;
+ 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;
+ 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*/);
+ first_int_addr = ip4_interface_first_address (ip4_main, sw_if_index, 0 /* just want the address */
+ );
- for (i = 0; i < vec_len(auto_add_sw_if_indices); i++)
+ for (i = 0; i < vec_len (auto_add_sw_if_indices); i++)
{
if (auto_add_sw_if_indices[i] == sw_if_index)
- {
- if (is_del)
- {
- /* if have address remove it */
- if (first_int_addr)
- (void) snat_del_address (sm, first_int_addr[0], 1, twice_nat);
- else
- {
- for (j = 0; j < vec_len (sm->to_resolve); j++)
- {
- rp = sm->to_resolve + j;
- if (rp->sw_if_index == sw_if_index)
- vec_add1 (indices_to_delete, j);
- }
- if (vec_len(indices_to_delete))
- {
- for (j = vec_len(indices_to_delete)-1; j >= 0; j--)
- vec_del1(sm->to_resolve, j);
- vec_free(indices_to_delete);
- }
- }
- if (twice_nat)
- vec_del1(sm->auto_add_sw_if_indices_twice_nat, i);
- else
- vec_del1(sm->auto_add_sw_if_indices, i);
- }
- else
- return VNET_API_ERROR_VALUE_EXIST;
+ {
+ if (is_del)
+ {
+ /* if have address remove it */
+ if (first_int_addr)
+ (void) snat_del_address (sm, first_int_addr[0], 1, twice_nat);
+ else
+ {
+ for (j = 0; j < vec_len (sm->to_resolve); j++)
+ {
+ rp = sm->to_resolve + j;
+ if (rp->sw_if_index == sw_if_index)
+ vec_add1 (indices_to_delete, j);
+ }
+ if (vec_len (indices_to_delete))
+ {
+ for (j = vec_len (indices_to_delete) - 1; j >= 0; j--)
+ vec_del1 (sm->to_resolve, j);
+ vec_free (indices_to_delete);
+ }
+ }
+ if (twice_nat)
+ vec_del1 (sm->auto_add_sw_if_indices_twice_nat, i);
+ else
+ vec_del1 (sm->auto_add_sw_if_indices, i);
+ }
+ else
+ return VNET_API_ERROR_VALUE_EXIST;
- return 0;
- }
+ return 0;
+ }
}
if (is_del)
/* add to the auto-address list */
if (twice_nat)
- vec_add1(sm->auto_add_sw_if_indices_twice_nat, sw_if_index);
+ 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);
+ 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, twice_nat);
+ (void) snat_add_address (sm, first_int_addr, ~0, twice_nat);
return 0;
}
int
-nat44_del_session (snat_main_t *sm, ip4_address_t *addr, u16 port,
- snat_protocol_t proto, u32 vrf_id, int is_in)
+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;
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;
+
+ if (sm->endpoint_dependent)
+ return VNET_API_ERROR_UNSUPPORTED;
ip.dst_address.as_u32 = ip.src_address.as_u32 = addr->as_u32;
if (sm->num_workers > 1)
tsm =
vec_elt_at_index (sm->per_thread_data,
- sm->worker_in2out_cb (&ip, fib_index));
+ sm->worker_in2out_cb (&ip, fib_index, 0));
else
tsm = vec_elt_at_index (sm->per_thread_data, sm->num_workers);
t = is_in ? &tsm->in2out : &tsm->out2in;
if (!clib_bihash_search_8_8 (t, &kv, &value))
{
+ if (pool_is_free_index (tsm->sessions, value.value))
+ return VNET_API_ERROR_UNSPECIFIED;
+
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);
+ nat_free_session_data (sm, s, tsm - sm->per_thread_data, 0);
+ nat44_delete_session (sm, s, tsm - sm->per_thread_data);
return 0;
}
return VNET_API_ERROR_NO_SUCH_ENTRY;
}
+int
+nat44_del_ed_session (snat_main_t * sm, ip4_address_t * addr, u16 port,
+ ip4_address_t * eh_addr, u16 eh_port, u8 proto,
+ u32 vrf_id, int is_in)
+{
+ ip4_header_t ip;
+ clib_bihash_16_8_t *t;
+ nat_ed_ses_key_t key;
+ clib_bihash_kv_16_8_t kv, value;
+ u32 fib_index = fib_table_find (FIB_PROTOCOL_IP4, vrf_id);
+ snat_session_t *s;
+ snat_main_per_thread_data_t *tsm;
+
+ if (!sm->endpoint_dependent)
+ return VNET_API_ERROR_FEATURE_DISABLED;
+
+ ip.dst_address.as_u32 = ip.src_address.as_u32 = addr->as_u32;
+ if (sm->num_workers > 1)
+ tsm =
+ vec_elt_at_index (sm->per_thread_data,
+ sm->worker_in2out_cb (&ip, fib_index, 0));
+ else
+ tsm = vec_elt_at_index (sm->per_thread_data, sm->num_workers);
+
+ t = is_in ? &tsm->in2out_ed : &tsm->out2in_ed;
+ key.l_addr.as_u32 = addr->as_u32;
+ key.r_addr.as_u32 = eh_addr->as_u32;
+ key.l_port = clib_host_to_net_u16 (port);
+ key.r_port = clib_host_to_net_u16 (eh_port);
+ key.proto = proto;
+ key.fib_index = fib_index;
+ kv.key[0] = key.as_u64[0];
+ kv.key[1] = key.as_u64[1];
+ if (clib_bihash_search_16_8 (t, &kv, &value))
+ return VNET_API_ERROR_NO_SUCH_ENTRY;
+
+ if (pool_is_free_index (tsm->sessions, value.value))
+ return VNET_API_ERROR_UNSPECIFIED;
+ s = pool_elt_at_index (tsm->sessions, value.value);
+ nat_free_session_data (sm, s, tsm - sm->per_thread_data, 0);
+ nat44_delete_session (sm, s, tsm - sm->per_thread_data);
+ return 0;
+}
+
void
nat_set_alloc_addr_and_port_mape (u16 psid, u16 psid_offset, u16 psid_length)
{
snat_main_t *sm = &snat_main;
+ sm->addr_and_port_alloc_alg = NAT_ADDR_AND_PORT_ALLOC_ALG_MAPE;
sm->alloc_addr_and_port = nat_alloc_addr_and_port_mape;
sm->psid = psid;
sm->psid_offset = psid_offset;
sm->psid_length = psid_length;
}
+void
+nat_set_alloc_addr_and_port_range (u16 start_port, u16 end_port)
+{
+ snat_main_t *sm = &snat_main;
+
+ sm->addr_and_port_alloc_alg = NAT_ADDR_AND_PORT_ALLOC_ALG_RANGE;
+ sm->alloc_addr_and_port = nat_alloc_addr_and_port_range;
+ sm->start_port = start_port;
+ sm->end_port = end_port;
+}
+
void
nat_set_alloc_addr_and_port_default (void)
{
snat_main_t *sm = &snat_main;
+ sm->addr_and_port_alloc_alg = NAT_ADDR_AND_PORT_ALLOC_ALG_DEFAULT;
sm->alloc_addr_and_port = nat_alloc_addr_and_port_default;
}
+VLIB_NODE_FN (nat_default_node) (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * frame)
+{
+ return 0;
+}
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (nat_default_node) = {
+ .name = "nat-default",
+ .vector_size = sizeof (u32),
+ .format_trace = 0,
+ .type = VLIB_NODE_TYPE_INTERNAL,
+ .n_errors = 0,
+ .n_next_nodes = NAT_N_NEXT,
+ .next_nodes = {
+ [NAT_NEXT_DROP] = "error-drop",
+ [NAT_NEXT_ICMP_ERROR] = "ip4-icmp-error",
+ [NAT_NEXT_IN2OUT_PRE] = "nat-pre-in2out",
+ [NAT_NEXT_OUT2IN_PRE] = "nat-pre-out2in",
+ [NAT_NEXT_IN2OUT_ED_FAST_PATH] = "nat44-ed-in2out",
+ [NAT_NEXT_IN2OUT_ED_SLOW_PATH] = "nat44-ed-in2out-slowpath",
+ [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",
+ },
+};
+/* *INDENT-ON* */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
Code Review / vpp.git / blobdiff