*/
/**
* @file
- * @brief NAT44 inside to outside network translation
+ * @brief NAT44 EI inside to outside network translation
*/
#include <vlib/vlib.h>
-#include <vnet/vnet.h>
+#include <vnet/vnet.h>
#include <vnet/ip/ip.h>
#include <vnet/ethernet/ethernet.h>
-#include <vnet/fib/ip4_fib.h>
#include <vnet/udp/udp_local.h>
-#include <nat/nat.h>
-#include <nat/lib/ipfix_logging.h>
-#include <nat/nat_inlines.h>
-#include <nat/lib/nat_syslog.h>
-#include <nat/nat44-ei/nat44_ei_inlines.h>
-#include <nat/nat44-ei/nat44_ei.h>
+#include <vnet/fib/ip4_fib.h>
#include <vppinfra/hash.h>
#include <vppinfra/error.h>
-#include <vppinfra/elog.h>
+
+#include <nat/lib/log.h>
+#include <nat/lib/nat_syslog.h>
+#include <nat/lib/ipfix_logging.h>
#include <nat/lib/nat_inlines.h>
+#include <nat/nat44-ei/nat44_ei_inlines.h>
+#include <nat/nat44-ei/nat44_ei.h>
+
+extern vnet_feature_arc_registration_t vnet_feat_arc_ip4_local;
+
+#define foreach_nat44_ei_in2out_error \
+ _ (UNSUPPORTED_PROTOCOL, "unsupported protocol") \
+ _ (OUT_OF_PORTS, "out of ports") \
+ _ (BAD_OUTSIDE_FIB, "outside VRF ID not found") \
+ _ (BAD_ICMP_TYPE, "unsupported ICMP type") \
+ _ (NO_TRANSLATION, "no translation") \
+ _ (MAX_SESSIONS_EXCEEDED, "maximum sessions exceeded") \
+ _ (CANNOT_CREATE_USER, "cannot create NAT user")
+
+#define foreach_nat44_ei_hairpinning_handoff_error \
+ _ (CONGESTION_DROP, "congestion drop")
+
+typedef enum
+{
+#define _(sym, str) NAT44_EI_IN2OUT_ERROR_##sym,
+ foreach_nat44_ei_in2out_error
+#undef _
+ NAT44_EI_IN2OUT_N_ERROR,
+} nat44_ei_in2out_error_t;
+
+static char *nat44_ei_in2out_error_strings[] = {
+#define _(sym,string) string,
+ foreach_nat44_ei_in2out_error
+#undef _
+};
+
+typedef enum
+{
+#define _(sym, str) NAT44_EI_HAIRPINNING_HANDOFF_ERROR_##sym,
+ foreach_nat44_ei_hairpinning_handoff_error
+#undef _
+ NAT44_EI_HAIRPINNING_HANDOFF_N_ERROR,
+} nat44_ei_hairpinning_handoff_error_t;
+
+static char *nat44_ei_hairpinning_handoff_error_strings[] = {
+#define _(sym, string) string,
+ foreach_nat44_ei_hairpinning_handoff_error
+#undef _
+};
+
+typedef enum
+{
+ NAT44_EI_IN2OUT_NEXT_LOOKUP,
+ NAT44_EI_IN2OUT_NEXT_DROP,
+ NAT44_EI_IN2OUT_NEXT_ICMP_ERROR,
+ NAT44_EI_IN2OUT_NEXT_SLOW_PATH,
+ NAT44_EI_IN2OUT_NEXT_HAIRPINNING_HANDOFF,
+ NAT44_EI_IN2OUT_N_NEXT,
+} nat44_ei_in2out_next_t;
+
+typedef enum
+{
+ NAT44_EI_IN2OUT_HAIRPINNING_FINISH_NEXT_DROP,
+ NAT44_EI_IN2OUT_HAIRPINNING_FINISH_NEXT_LOOKUP,
+ NAT44_EI_IN2OUT_HAIRPINNING_FINISH_N_NEXT,
+} nat44_ei_in2out_hairpinnig_finish_next_t;
+
+typedef enum
+{
+ NAT44_EI_HAIRPIN_NEXT_LOOKUP,
+ NAT44_EI_HAIRPIN_NEXT_DROP,
+ NAT44_EI_HAIRPIN_NEXT_HANDOFF,
+ NAT44_EI_HAIRPIN_N_NEXT,
+} nat44_ei_hairpin_next_t;
typedef struct
{
u32 session_index;
u32 is_slow_path;
u32 is_hairpinning;
-} snat_in2out_trace_t;
+} nat44_ei_in2out_trace_t;
+
+typedef struct
+{
+ ip4_address_t addr;
+ u16 port;
+ u32 fib_index;
+ u32 session_index;
+} nat44_ei_hairpin_trace_t;
+
+typedef struct
+{
+ u32 next_worker_index;
+} nat44_ei_hairpinning_handoff_trace_t;
-/* packet trace format function */
static u8 *
-format_snat_in2out_trace (u8 * s, va_list * args)
+format_nat44_ei_in2out_trace (u8 *s, va_list *args)
{
CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
- snat_in2out_trace_t *t = va_arg (*args, snat_in2out_trace_t *);
+ nat44_ei_in2out_trace_t *t = va_arg (*args, nat44_ei_in2out_trace_t *);
char *tag;
-
tag = t->is_slow_path ? "NAT44_IN2OUT_SLOW_PATH" : "NAT44_IN2OUT_FAST_PATH";
-
s = format (s, "%s: sw_if_index %d, next index %d, session %d", tag,
t->sw_if_index, t->next_index, t->session_index);
if (t->is_hairpinning)
+ s = format (s, ", with-hairpinning");
+ return s;
+}
+
+static u8 *
+format_nat44_ei_in2out_fast_trace (u8 *s, va_list *args)
+{
+ CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
+ CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
+ nat44_ei_in2out_trace_t *t = va_arg (*args, nat44_ei_in2out_trace_t *);
+ s = format (s, "NAT44_IN2OUT_FAST: sw_if_index %d, next index %d",
+ t->sw_if_index, t->next_index);
+ return s;
+}
+
+static u8 *
+format_nat44_ei_hairpin_trace (u8 *s, va_list *args)
+{
+ CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
+ CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
+ nat44_ei_hairpin_trace_t *t = va_arg (*args, nat44_ei_hairpin_trace_t *);
+
+ s = format (s, "new dst addr %U port %u fib-index %u", format_ip4_address,
+ &t->addr, clib_net_to_host_u16 (t->port), t->fib_index);
+ if (~0 == t->session_index)
+ {
+ s = format (s, " is-static-mapping");
+ }
+ else
{
- s = format (s, ", with-hairpinning");
+ s = format (s, " session-index %u", t->session_index);
}
return s;
}
static u8 *
-format_snat_in2out_fast_trace (u8 * s, va_list * args)
+format_nat44_ei_hairpinning_handoff_trace (u8 *s, va_list *args)
{
CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
- snat_in2out_trace_t *t = va_arg (*args, snat_in2out_trace_t *);
+ nat44_ei_hairpinning_handoff_trace_t *t =
+ va_arg (*args, nat44_ei_hairpinning_handoff_trace_t *);
- s = format (s, "NAT44_IN2OUT_FAST: sw_if_index %d, next index %d",
- t->sw_if_index, t->next_index);
+ s = format (s, "nat44-ei-hairpinning-handoff: next-worker %d",
+ t->next_worker_index);
return s;
}
-#define foreach_snat_in2out_error \
-_(UNSUPPORTED_PROTOCOL, "unsupported protocol") \
-_(OUT_OF_PORTS, "out of ports") \
-_(BAD_OUTSIDE_FIB, "outside VRF ID not found") \
-_(BAD_ICMP_TYPE, "unsupported ICMP type") \
-_(NO_TRANSLATION, "no translation") \
-_(MAX_SESSIONS_EXCEEDED, "maximum sessions exceeded") \
-_(CANNOT_CREATE_USER, "cannot create NAT user")
-
-typedef enum
+static_always_inline int
+nat44_ei_not_translate_fast (vlib_node_runtime_t *node, u32 sw_if_index0,
+ ip4_header_t *ip0, u32 proto0, u32 rx_fib_index0)
{
-#define _(sym,str) SNAT_IN2OUT_ERROR_##sym,
- foreach_snat_in2out_error
-#undef _
- SNAT_IN2OUT_N_ERROR,
-} snat_in2out_error_t;
+ nat44_ei_main_t *nm = &nat44_ei_main;
-static char *snat_in2out_error_strings[] = {
-#define _(sym,string) string,
- foreach_snat_in2out_error
-#undef _
-};
+ if (nm->out2in_dpo)
+ return 0;
-typedef enum
-{
- SNAT_IN2OUT_NEXT_LOOKUP,
- SNAT_IN2OUT_NEXT_DROP,
- SNAT_IN2OUT_NEXT_ICMP_ERROR,
- SNAT_IN2OUT_NEXT_SLOW_PATH,
- SNAT_IN2OUT_N_NEXT,
-} snat_in2out_next_t;
-
-static inline int
-snat_not_translate (snat_main_t * sm, vlib_node_runtime_t * node,
- u32 sw_if_index0, ip4_header_t * ip0, u32 proto0,
- u32 rx_fib_index0, u32 thread_index)
+ fib_node_index_t fei = FIB_NODE_INDEX_INVALID;
+ nat44_ei_outside_fib_t *outside_fib;
+ fib_prefix_t pfx = {
+ .fp_proto = FIB_PROTOCOL_IP4,
+ .fp_len = 32,
+ .fp_addr = {
+ .ip4.as_u32 = ip0->dst_address.as_u32,
+ }
+ ,
+ };
+
+ /* Don't NAT packet aimed at the intfc address */
+ if (PREDICT_FALSE (nat44_ei_is_interface_addr (
+ nm->ip4_main, node, sw_if_index0, ip0->dst_address.as_u32)))
+ return 1;
+
+ fei = fib_table_lookup (rx_fib_index0, &pfx);
+ if (FIB_NODE_INDEX_INVALID != fei)
+ {
+ u32 sw_if_index = fib_entry_get_resolving_interface (fei);
+ if (sw_if_index == ~0)
+ {
+ vec_foreach (outside_fib, nm->outside_fibs)
+ {
+ fei = fib_table_lookup (outside_fib->fib_index, &pfx);
+ if (FIB_NODE_INDEX_INVALID != fei)
+ {
+ sw_if_index = fib_entry_get_resolving_interface (fei);
+ if (sw_if_index != ~0)
+ break;
+ }
+ }
+ }
+ if (sw_if_index == ~0)
+ return 1;
+
+ nat44_ei_interface_t *i;
+ pool_foreach (i, nm->interfaces)
+ {
+ /* NAT packet aimed at outside interface */
+ if ((nat44_ei_interface_is_outside (i)) &&
+ (sw_if_index == i->sw_if_index))
+ return 0;
+ }
+ }
+
+ return 1;
+}
+
+static_always_inline int
+nat44_ei_not_translate (nat44_ei_main_t *nm, vlib_node_runtime_t *node,
+ u32 sw_if_index0, ip4_header_t *ip0, u32 proto0,
+ u32 rx_fib_index0, u32 thread_index)
{
udp_header_t *udp0 = ip4_next_header (ip0);
clib_bihash_kv_8_8_t kv0, value0;
- init_nat_k (&kv0, ip0->dst_address, udp0->dst_port, sm->outside_fib_index,
+ init_nat_k (&kv0, ip0->dst_address, udp0->dst_port, nm->outside_fib_index,
proto0);
/* NAT packet aimed at external address if */
/* has active sessions */
- if (clib_bihash_search_8_8 (&sm->out2in, &kv0, &value0))
+ if (clib_bihash_search_8_8 (&nm->out2in, &kv0, &value0))
{
/* or is static mappings */
ip4_address_t placeholder_addr;
u16 placeholder_port;
u32 placeholder_fib_index;
if (!nat44_ei_static_mapping_match (ip0->dst_address, udp0->dst_port,
- sm->outside_fib_index, proto0,
+ nm->outside_fib_index, proto0,
&placeholder_addr, &placeholder_port,
&placeholder_fib_index, 1, 0, 0))
return 0;
else
return 0;
- if (sm->forwarding_enabled)
+ if (nm->forwarding_enabled)
return 1;
- return snat_not_translate_fast (sm, node, sw_if_index0, ip0, proto0,
- rx_fib_index0);
+ return nat44_ei_not_translate_fast (node, sw_if_index0, ip0, proto0,
+ rx_fib_index0);
}
-static inline int
-nat_not_translate_output_feature (snat_main_t * sm, ip4_header_t * ip0,
- u32 proto0, u16 src_port, u16 dst_port,
- u32 thread_index, u32 sw_if_index)
+static_always_inline int
+nat44_ei_not_translate_output_feature (nat44_ei_main_t *nm, ip4_header_t *ip0,
+ u32 proto0, u16 src_port, u16 dst_port,
+ u32 thread_index, u32 sw_if_index)
{
clib_bihash_kv_8_8_t kv0, value0;
- snat_interface_t *i;
+ nat44_ei_interface_t *i;
/* src NAT check */
init_nat_k (&kv0, ip0->src_address, src_port,
ip4_fib_table_get_index_for_sw_if_index (sw_if_index), proto0);
- if (!clib_bihash_search_8_8 (&sm->out2in, &kv0, &value0))
+ if (!clib_bihash_search_8_8 (&nm->out2in, &kv0, &value0))
return 1;
/* dst NAT check */
init_nat_k (&kv0, ip0->dst_address, dst_port,
ip4_fib_table_get_index_for_sw_if_index (sw_if_index), proto0);
- if (!clib_bihash_search_8_8 (&sm->in2out, &kv0, &value0))
+ if (!clib_bihash_search_8_8 (&nm->in2out, &kv0, &value0))
{
/* hairpinning */
- /* *INDENT-OFF* */
- pool_foreach (i, sm->output_feature_interfaces)
- {
- if ((nat_interface_is_inside(i)) && (sw_if_index == i->sw_if_index))
- return 0;
- }
- /* *INDENT-ON* */
+ pool_foreach (i, nm->output_feature_interfaces)
+ {
+ if ((nat44_ei_interface_is_inside (i)) &&
+ (sw_if_index == i->sw_if_index))
+ return 0;
+ }
return 1;
}
int
nat44_i2o_is_idle_session_cb (clib_bihash_kv_8_8_t * kv, void *arg)
{
- snat_main_t *sm = &snat_main;
- nat44_is_idle_session_ctx_t *ctx = arg;
- snat_session_t *s;
+ nat44_ei_main_t *nm = &nat44_ei_main;
+ nat44_ei_is_idle_session_ctx_t *ctx = arg;
+ nat44_ei_session_t *s;
u64 sess_timeout_time;
- snat_main_per_thread_data_t *tsm = vec_elt_at_index (sm->per_thread_data,
- ctx->thread_index);
+ nat44_ei_main_per_thread_data_t *tnm =
+ vec_elt_at_index (nm->per_thread_data, ctx->thread_index);
clib_bihash_kv_8_8_t s_kv;
- s = pool_elt_at_index (tsm->sessions, kv->value);
- sess_timeout_time = s->last_heard + (f64) nat44_session_get_timeout (sm, s);
+ if (ctx->thread_index != nat_value_get_thread_index (kv))
+ {
+ return 0;
+ }
+
+ s = pool_elt_at_index (tnm->sessions, nat_value_get_session_index (kv));
+ sess_timeout_time = s->last_heard + (f64) nat_session_get_timeout (
+ &nm->timeouts, s->nat_proto, s->state);
if (ctx->now >= sess_timeout_time)
{
init_nat_o2i_k (&s_kv, s);
- if (clib_bihash_add_del_8_8 (&sm->out2in, &s_kv, 0))
- nat_elog_warn ("out2in key del failed");
+ if (clib_bihash_add_del_8_8 (&nm->out2in, &s_kv, 0))
+ nat_elog_warn (nm, "out2in key del failed");
- nat_ipfix_logging_nat44_ses_delete (ctx->thread_index,
- s->in2out.addr.as_u32,
- s->out2in.addr.as_u32,
- s->nat_proto,
- s->in2out.port,
- s->out2in.port,
- s->in2out.fib_index);
+ nat_ipfix_logging_nat44_ses_delete (
+ ctx->thread_index, s->in2out.addr.as_u32, s->out2in.addr.as_u32,
+ nat_proto_to_ip_proto (s->nat_proto), s->in2out.port, s->out2in.port,
+ s->in2out.fib_index);
nat_syslog_nat44_apmdel (s->user_index, s->in2out.fib_index,
&s->in2out.addr, s->in2out.port,
s->ext_host_port, s->nat_proto, s->out2in.fib_index,
ctx->thread_index);
- if (!snat_is_session_static (s))
- snat_free_outside_address_and_port (sm->addresses, ctx->thread_index,
- &s->out2in.addr,
- s->out2in.port, s->nat_proto);
+ if (!nat44_ei_is_session_static (s))
+ nat44_ei_free_outside_address_and_port (
+ nm->addresses, ctx->thread_index, &s->out2in.addr, s->out2in.port,
+ s->nat_proto);
- nat44_delete_session (sm, s, ctx->thread_index);
+ nat44_ei_delete_session (nm, s, ctx->thread_index);
return 1;
}
#endif
static u32
-slow_path (snat_main_t * sm, vlib_buffer_t * b0,
- ip4_header_t * ip0,
- ip4_address_t i2o_addr,
- u16 i2o_port,
- u32 rx_fib_index0,
- nat_protocol_t nat_proto,
- snat_session_t ** sessionp,
- vlib_node_runtime_t * node, u32 next0, u32 thread_index, f64 now)
+slow_path (nat44_ei_main_t *nm, vlib_buffer_t *b0, ip4_header_t *ip0,
+ ip4_address_t i2o_addr, u16 i2o_port, u32 rx_fib_index0,
+ nat_protocol_t nat_proto, nat44_ei_session_t **sessionp,
+ vlib_node_runtime_t *node, u32 next0, u32 thread_index, f64 now)
{
- snat_user_t *u;
- snat_session_t *s = 0;
+ nat44_ei_user_t *u;
+ nat44_ei_session_t *s = 0;
clib_bihash_kv_8_8_t kv0;
u8 is_sm = 0;
- nat_outside_fib_t *outside_fib;
+ nat44_ei_outside_fib_t *outside_fib;
fib_node_index_t fei = FIB_NODE_INDEX_INVALID;
u8 identity_nat;
fib_prefix_t pfx = {
.ip4.as_u32 = ip0->dst_address.as_u32,
},
};
- nat44_is_idle_session_ctx_t ctx0;
+ nat44_ei_is_idle_session_ctx_t ctx0;
ip4_address_t sm_addr;
u16 sm_port;
u32 sm_fib_index;
- if (PREDICT_FALSE (nat44_ei_maximum_sessions_exceeded (sm, thread_index)))
+ if (PREDICT_FALSE (nat44_ei_maximum_sessions_exceeded (nm, thread_index)))
{
- b0->error = node->errors[SNAT_IN2OUT_ERROR_MAX_SESSIONS_EXCEEDED];
+ b0->error = node->errors[NAT44_EI_IN2OUT_ERROR_MAX_SESSIONS_EXCEEDED];
nat_ipfix_logging_max_sessions (thread_index,
- sm->max_translations_per_thread);
- nat_elog_notice ("maximum sessions exceeded");
- return SNAT_IN2OUT_NEXT_DROP;
+ nm->max_translations_per_thread);
+ nat_elog_notice (nm, "maximum sessions exceeded");
+ return NAT44_EI_IN2OUT_NEXT_DROP;
}
/* First try to match static mapping by local address and port */
&sm_fib_index, 0, 0, &identity_nat))
{
/* Try to create dynamic translation */
- if (sm->alloc_addr_and_port (
- sm->addresses, rx_fib_index0, thread_index, nat_proto, &sm_addr,
- &sm_port, sm->port_per_thread,
- sm->per_thread_data[thread_index].snat_thread_index))
+ if (nm->alloc_addr_and_port (
+ nm->addresses, rx_fib_index0, thread_index, nat_proto,
+ ip0->src_address, &sm_addr, &sm_port, nm->port_per_thread,
+ nm->per_thread_data[thread_index].snat_thread_index))
{
- b0->error = node->errors[SNAT_IN2OUT_ERROR_OUT_OF_PORTS];
- return SNAT_IN2OUT_NEXT_DROP;
+ b0->error = node->errors[NAT44_EI_IN2OUT_ERROR_OUT_OF_PORTS];
+ return NAT44_EI_IN2OUT_NEXT_DROP;
}
}
else
is_sm = 1;
}
- u = nat_user_get_or_create (sm, &ip0->src_address, rx_fib_index0,
- thread_index);
+ u = nat44_ei_user_get_or_create (nm, &ip0->src_address, rx_fib_index0,
+ thread_index);
if (!u)
{
- b0->error = node->errors[SNAT_IN2OUT_ERROR_CANNOT_CREATE_USER];
- return SNAT_IN2OUT_NEXT_DROP;
+ b0->error = node->errors[NAT44_EI_IN2OUT_ERROR_CANNOT_CREATE_USER];
+ return NAT44_EI_IN2OUT_NEXT_DROP;
}
- s = nat_session_alloc_or_recycle (sm, u, thread_index, now);
+ s = nat44_ei_session_alloc_or_recycle (nm, u, thread_index, now);
if (!s)
{
- nat44_delete_user_with_no_session (sm, u, thread_index);
- nat_elog_warn ("create NAT session failed");
- return SNAT_IN2OUT_NEXT_DROP;
+ nat44_ei_delete_user_with_no_session (nm, u, thread_index);
+ nat_elog_warn (nm, "create NAT session failed");
+ return NAT44_EI_IN2OUT_NEXT_DROP;
}
if (is_sm)
- s->flags |= SNAT_SESSION_FLAG_STATIC_MAPPING;
- user_session_increment (sm, u, is_sm);
+ s->flags |= NAT44_EI_SESSION_FLAG_STATIC_MAPPING;
+ nat44_ei_user_session_increment (nm, u, is_sm);
s->in2out.addr = i2o_addr;
s->in2out.port = i2o_port;
s->in2out.fib_index = rx_fib_index0;
s->nat_proto = nat_proto;
s->out2in.addr = sm_addr;
s->out2in.port = sm_port;
- s->out2in.fib_index = sm->outside_fib_index;
- switch (vec_len (sm->outside_fibs))
+ s->out2in.fib_index = nm->outside_fib_index;
+ switch (vec_len (nm->outside_fibs))
{
case 0:
- s->out2in.fib_index = sm->outside_fib_index;
+ s->out2in.fib_index = nm->outside_fib_index;
break;
case 1:
- s->out2in.fib_index = sm->outside_fibs[0].fib_index;
+ s->out2in.fib_index = nm->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)
- {
- s->out2in.fib_index = outside_fib->fib_index;
- break;
- }
- }
- }
- /* *INDENT-ON* */
+ vec_foreach (outside_fib, nm->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)
+ {
+ s->out2in.fib_index = outside_fib->fib_index;
+ break;
+ }
+ }
+ }
break;
}
s->ext_host_addr.as_u32 = ip0->dst_address.as_u32;
ctx0.now = now;
ctx0.thread_index = thread_index;
init_nat_i2o_kv (&kv0, s, thread_index,
- s - sm->per_thread_data[thread_index].sessions);
+ s - nm->per_thread_data[thread_index].sessions);
if (clib_bihash_add_or_overwrite_stale_8_8 (
- &sm->in2out, &kv0, nat44_i2o_is_idle_session_cb, &ctx0))
- nat_elog_notice ("in2out key add failed");
+ &nm->in2out, &kv0, nat44_i2o_is_idle_session_cb, &ctx0))
+ nat_elog_notice (nm, "in2out key add failed");
init_nat_o2i_kv (&kv0, s, thread_index,
- s - sm->per_thread_data[thread_index].sessions);
+ s - nm->per_thread_data[thread_index].sessions);
if (clib_bihash_add_or_overwrite_stale_8_8 (
- &sm->out2in, &kv0, nat44_o2i_is_idle_session_cb, &ctx0))
- nat_elog_notice ("out2in key add failed");
+ &nm->out2in, &kv0, nat44_o2i_is_idle_session_cb, &ctx0))
+ nat_elog_notice (nm, "out2in key add failed");
/* log NAT event */
- nat_ipfix_logging_nat44_ses_create (thread_index,
- s->in2out.addr.as_u32,
- s->out2in.addr.as_u32,
- s->nat_proto,
- s->in2out.port,
- s->out2in.port, s->in2out.fib_index);
+ nat_ipfix_logging_nat44_ses_create (
+ thread_index, s->in2out.addr.as_u32, s->out2in.addr.as_u32,
+ nat_proto_to_ip_proto (s->nat_proto), s->in2out.port, s->out2in.port,
+ s->in2out.fib_index);
- nat_syslog_nat44_apmadd (s->user_index, s->in2out.fib_index,
- &s->in2out.addr, s->in2out.port, &s->out2in.addr,
- s->out2in.port, s->nat_proto);
+ nat_syslog_nat44_apmadd (s->user_index, s->in2out.fib_index, &s->in2out.addr,
+ s->in2out.port, &s->out2in.addr, s->out2in.port,
+ s->nat_proto);
nat_ha_sadd (&s->in2out.addr, s->in2out.port, &s->out2in.addr,
s->out2in.port, &s->ext_host_addr, s->ext_host_port,
- &s->ext_host_nat_addr, s->ext_host_nat_port,
- s->nat_proto, s->in2out.fib_index, s->flags, thread_index, 0);
+ &s->ext_host_nat_addr, s->ext_host_nat_port, s->nat_proto,
+ s->in2out.fib_index, s->flags, thread_index, 0);
return next0;
}
-#ifndef CLIB_MARCH_VARIANT
-static_always_inline snat_in2out_error_t
-icmp_get_key (vlib_buffer_t * b, ip4_header_t * ip0,
- ip4_address_t * addr, u16 * port, nat_protocol_t * nat_proto)
+static_always_inline nat44_ei_in2out_error_t
+icmp_get_key (vlib_buffer_t *b, ip4_header_t *ip0, ip4_address_t *addr,
+ u16 *port, nat_protocol_t *nat_proto)
{
icmp46_header_t *icmp0;
icmp_echo_header_t *echo0, *inner_echo0 = 0;
*port = ((tcp_udp_header_t *) l4_header)->dst_port;
break;
default:
- return SNAT_IN2OUT_ERROR_UNSUPPORTED_PROTOCOL;
+ return NAT44_EI_IN2OUT_ERROR_UNSUPPORTED_PROTOCOL;
}
}
return -1; /* success */
}
-/**
- * Get address and port values to be used for ICMP packet translation
- * and create session if needed
- *
- * @param[in,out] sm NAT main
- * @param[in,out] node NAT node runtime
- * @param[in] thread_index thread index
- * @param[in,out] b0 buffer containing packet to be translated
- * @param[in,out] ip0 ip header
- * @param[out] p_proto protocol used for matching
- * @param[out] p_value address and port after NAT translation
- * @param[out] p_dont_translate if packet should not be translated
- * @param d optional parameter
- * @param e optional parameter
- */
-u32
-icmp_match_in2out_slow (snat_main_t *sm, vlib_node_runtime_t *node,
- u32 thread_index, vlib_buffer_t *b0, ip4_header_t *ip0,
- ip4_address_t *addr, u16 *port, u32 *fib_index,
- nat_protocol_t *proto, snat_session_t **p_s0,
- u8 *dont_translate)
+static_always_inline u32
+nat44_ei_icmp_match_in2out_slow (vlib_node_runtime_t *node, u32 thread_index,
+ vlib_buffer_t *b0, ip4_header_t *ip0,
+ ip4_address_t *addr, u16 *port,
+ u32 *fib_index, nat_protocol_t *proto,
+ nat44_ei_session_t **p_s0, u8 *dont_translate)
{
- snat_main_per_thread_data_t *tsm = &sm->per_thread_data[thread_index];
+ nat44_ei_main_t *nm = &nat44_ei_main;
+ nat44_ei_main_per_thread_data_t *tnm = &nm->per_thread_data[thread_index];
u32 sw_if_index0;
- snat_session_t *s0 = 0;
+ nat44_ei_session_t *s0 = 0;
clib_bihash_kv_8_8_t kv0, value0;
u32 next0 = ~0;
int err;
if (err != -1)
{
b0->error = node->errors[err];
- next0 = SNAT_IN2OUT_NEXT_DROP;
+ next0 = NAT44_EI_IN2OUT_NEXT_DROP;
goto out;
}
init_nat_k (&kv0, *addr, *port, *fib_index, *proto);
- if (clib_bihash_search_8_8 (&sm->in2out, &kv0, &value0))
+ if (clib_bihash_search_8_8 (&nm->in2out, &kv0, &value0))
{
if (vnet_buffer (b0)->sw_if_index[VLIB_TX] != ~0)
{
- if (PREDICT_FALSE
- (nat_not_translate_output_feature
- (sm, ip0, *proto, *port, *port, thread_index, sw_if_index0)))
+ if (PREDICT_FALSE (nat44_ei_not_translate_output_feature (
+ nm, ip0, *proto, *port, *port, thread_index, sw_if_index0)))
{
*dont_translate = 1;
goto out;
}
else
{
- if (PREDICT_FALSE (snat_not_translate (sm, node, sw_if_index0,
- ip0, NAT_PROTOCOL_ICMP,
- *fib_index, thread_index)))
+ if (PREDICT_FALSE (nat44_ei_not_translate (
+ nm, node, sw_if_index0, ip0, NAT_PROTOCOL_ICMP, *fib_index,
+ thread_index)))
{
*dont_translate = 1;
goto out;
(icmp_type_is_error_message
(vnet_buffer (b0)->ip.reass.icmp_type_or_tcp_flags)))
{
- b0->error = node->errors[SNAT_IN2OUT_ERROR_BAD_ICMP_TYPE];
- next0 = SNAT_IN2OUT_NEXT_DROP;
+ b0->error = node->errors[NAT44_EI_IN2OUT_ERROR_BAD_ICMP_TYPE];
+ next0 = NAT44_EI_IN2OUT_NEXT_DROP;
goto out;
}
- next0 =
- slow_path (sm, b0, ip0, *addr, *port, *fib_index, *proto, &s0, node,
- next0, thread_index, vlib_time_now (vm));
+ next0 = slow_path (nm, b0, ip0, *addr, *port, *fib_index, *proto, &s0,
+ node, next0, thread_index, vlib_time_now (vm));
- if (PREDICT_FALSE (next0 == SNAT_IN2OUT_NEXT_DROP))
+ if (PREDICT_FALSE (next0 == NAT44_EI_IN2OUT_NEXT_DROP))
goto out;
if (!s0)
&& !icmp_type_is_error_message (vnet_buffer (b0)->ip.
reass.icmp_type_or_tcp_flags)))
{
- b0->error = node->errors[SNAT_IN2OUT_ERROR_BAD_ICMP_TYPE];
- next0 = SNAT_IN2OUT_NEXT_DROP;
+ b0->error = node->errors[NAT44_EI_IN2OUT_ERROR_BAD_ICMP_TYPE];
+ next0 = NAT44_EI_IN2OUT_NEXT_DROP;
goto out;
}
- s0 = pool_elt_at_index (tsm->sessions,
+ s0 = pool_elt_at_index (tnm->sessions,
nat_value_get_session_index (&value0));
}
*p_s0 = s0;
return next0;
}
-#endif
-#ifndef CLIB_MARCH_VARIANT
-/**
- * Get address and port values to be used for ICMP packet translation
- *
- * @param[in] sm NAT main
- * @param[in,out] node NAT node runtime
- * @param[in] thread_index thread index
- * @param[in,out] b0 buffer containing packet to be translated
- * @param[in,out] ip0 ip header
- * @param[out] p_proto protocol used for matching
- * @param[out] p_value address and port after NAT translation
- * @param[out] p_dont_translate if packet should not be translated
- * @param d optional parameter
- * @param e optional parameter
- */
-u32
-icmp_match_in2out_fast (snat_main_t *sm, vlib_node_runtime_t *node,
- u32 thread_index, vlib_buffer_t *b0, ip4_header_t *ip0,
- ip4_address_t *addr, u16 *port, u32 *fib_index,
- nat_protocol_t *proto, snat_session_t **s0,
- u8 *dont_translate)
+static_always_inline u32
+nat44_ei_icmp_match_in2out_fast (vlib_node_runtime_t *node, u32 thread_index,
+ vlib_buffer_t *b0, ip4_header_t *ip0,
+ ip4_address_t *addr, u16 *port,
+ u32 *fib_index, nat_protocol_t *proto,
+ nat44_ei_session_t **s0, u8 *dont_translate)
{
u32 sw_if_index0;
u8 is_addr_only;
if (err != -1)
{
b0->error = node->errors[err];
- next0 = SNAT_IN2OUT_NEXT_DROP;
+ next0 = NAT44_EI_IN2OUT_NEXT_DROP;
goto out;
}
&sm_addr, &sm_port, &sm_fib_index, 0,
&is_addr_only, 0))
{
- if (PREDICT_FALSE (snat_not_translate_fast (sm, node, sw_if_index0, ip0,
- IP_PROTOCOL_ICMP,
- *fib_index)))
+ if (PREDICT_FALSE (nat44_ei_not_translate_fast (
+ node, sw_if_index0, ip0, IP_PROTOCOL_ICMP, *fib_index)))
{
*dont_translate = 1;
goto out;
if (icmp_type_is_error_message
(vnet_buffer (b0)->ip.reass.icmp_type_or_tcp_flags))
{
- next0 = SNAT_IN2OUT_NEXT_DROP;
+ next0 = NAT44_EI_IN2OUT_NEXT_DROP;
goto out;
}
- b0->error = node->errors[SNAT_IN2OUT_ERROR_NO_TRANSLATION];
- next0 = SNAT_IN2OUT_NEXT_DROP;
+ b0->error = node->errors[NAT44_EI_IN2OUT_ERROR_NO_TRANSLATION];
+ next0 = NAT44_EI_IN2OUT_NEXT_DROP;
goto out;
}
&& !icmp_type_is_error_message (vnet_buffer (b0)->ip.
reass.icmp_type_or_tcp_flags)))
{
- b0->error = node->errors[SNAT_IN2OUT_ERROR_BAD_ICMP_TYPE];
- next0 = SNAT_IN2OUT_NEXT_DROP;
+ b0->error = node->errors[NAT44_EI_IN2OUT_ERROR_BAD_ICMP_TYPE];
+ next0 = NAT44_EI_IN2OUT_NEXT_DROP;
goto out;
}
out:
return next0;
}
-#endif
-u32 icmp_in2out (snat_main_t *sm, vlib_buffer_t *b0, ip4_header_t *ip0,
- icmp46_header_t *icmp0, u32 sw_if_index0, u32 rx_fib_index0,
- vlib_node_runtime_t *node, u32 next0, u32 thread_index,
- snat_session_t **p_s0);
+static_always_inline u32
+nat44_ei_icmp_hairpinning (nat44_ei_main_t *nm, vlib_buffer_t *b0,
+ u32 thread_index, ip4_header_t *ip0,
+ icmp46_header_t *icmp0, u32 *required_thread_index)
+{
+ clib_bihash_kv_8_8_t kv0, value0;
+ u32 old_dst_addr0, new_dst_addr0;
+ u32 old_addr0, new_addr0;
+ u16 old_port0, new_port0;
+ u16 old_checksum0, new_checksum0;
+ u32 si, ti = 0;
+ ip_csum_t sum0;
+ nat44_ei_session_t *s0;
+ nat44_ei_static_mapping_t *m0;
+
+ if (icmp_type_is_error_message (
+ vnet_buffer (b0)->ip.reass.icmp_type_or_tcp_flags))
+ {
+ ip4_header_t *inner_ip0 = 0;
+ tcp_udp_header_t *l4_header = 0;
-#ifndef CLIB_MARCH_VARIANT
-u32
-icmp_in2out (snat_main_t *sm, vlib_buffer_t *b0, ip4_header_t *ip0,
- icmp46_header_t *icmp0, u32 sw_if_index0, u32 rx_fib_index0,
- vlib_node_runtime_t *node, u32 next0, u32 thread_index,
- snat_session_t **p_s0)
+ inner_ip0 = (ip4_header_t *) ((icmp_echo_header_t *) (icmp0 + 1) + 1);
+ l4_header = ip4_next_header (inner_ip0);
+ u32 protocol = ip_proto_to_nat_proto (inner_ip0->protocol);
+
+ if (protocol != NAT_PROTOCOL_TCP && protocol != NAT_PROTOCOL_UDP)
+ return 1;
+
+ init_nat_k (&kv0, ip0->dst_address, l4_header->src_port,
+ nm->outside_fib_index, protocol);
+ if (clib_bihash_search_8_8 (&nm->out2in, &kv0, &value0))
+ return 1;
+ ti = nat_value_get_thread_index (&value0);
+ if (ti != thread_index)
+ {
+ *required_thread_index = ti;
+ return 1;
+ }
+ si = nat_value_get_session_index (&value0);
+ s0 = pool_elt_at_index (nm->per_thread_data[ti].sessions, si);
+ new_dst_addr0 = s0->in2out.addr.as_u32;
+ vnet_buffer (b0)->sw_if_index[VLIB_TX] = s0->in2out.fib_index;
+
+ /* update inner source IP address */
+ old_addr0 = inner_ip0->src_address.as_u32;
+ inner_ip0->src_address.as_u32 = new_dst_addr0;
+ new_addr0 = inner_ip0->src_address.as_u32;
+ sum0 = icmp0->checksum;
+ sum0 =
+ ip_csum_update (sum0, old_addr0, new_addr0, ip4_header_t, src_address);
+ icmp0->checksum = ip_csum_fold (sum0);
+
+ /* update inner IP header checksum */
+ old_checksum0 = inner_ip0->checksum;
+ sum0 = inner_ip0->checksum;
+ sum0 =
+ ip_csum_update (sum0, old_addr0, new_addr0, ip4_header_t, src_address);
+ inner_ip0->checksum = ip_csum_fold (sum0);
+ new_checksum0 = inner_ip0->checksum;
+ sum0 = icmp0->checksum;
+ sum0 = ip_csum_update (sum0, old_checksum0, new_checksum0, ip4_header_t,
+ checksum);
+ icmp0->checksum = ip_csum_fold (sum0);
+
+ /* update inner source port */
+ old_port0 = l4_header->src_port;
+ l4_header->src_port = s0->in2out.port;
+ new_port0 = l4_header->src_port;
+ sum0 = icmp0->checksum;
+ sum0 = ip_csum_update (sum0, old_port0, new_port0, tcp_udp_header_t,
+ src_port);
+ icmp0->checksum = ip_csum_fold (sum0);
+ }
+ else
+ {
+ init_nat_k (&kv0, ip0->dst_address, 0, nm->outside_fib_index, 0);
+ if (clib_bihash_search_8_8 (&nm->static_mapping_by_external, &kv0,
+ &value0))
+ {
+ icmp_echo_header_t *echo0 = (icmp_echo_header_t *) (icmp0 + 1);
+ u16 icmp_id0 = echo0->identifier;
+ init_nat_k (&kv0, ip0->dst_address, icmp_id0, nm->outside_fib_index,
+ NAT_PROTOCOL_ICMP);
+ int rv = clib_bihash_search_8_8 (&nm->out2in, &kv0, &value0);
+ if (!rv)
+ {
+ ti = nat_value_get_thread_index (&value0);
+ if (ti != thread_index)
+ {
+ *required_thread_index = ti;
+ return 1;
+ }
+ si = nat_value_get_session_index (&value0);
+ s0 = pool_elt_at_index (nm->per_thread_data[ti].sessions, si);
+ new_dst_addr0 = s0->in2out.addr.as_u32;
+ vnet_buffer (b0)->sw_if_index[VLIB_TX] = s0->in2out.fib_index;
+ echo0->identifier = s0->in2out.port;
+ sum0 = icmp0->checksum;
+ sum0 = ip_csum_update (sum0, icmp_id0, s0->in2out.port,
+ icmp_echo_header_t, identifier);
+ icmp0->checksum = ip_csum_fold (sum0);
+ goto change_addr;
+ }
+
+ return 1;
+ }
+
+ m0 = pool_elt_at_index (nm->static_mappings, value0.value);
+
+ new_dst_addr0 = m0->local_addr.as_u32;
+ if (vnet_buffer (b0)->sw_if_index[VLIB_TX] == ~0)
+ vnet_buffer (b0)->sw_if_index[VLIB_TX] = m0->fib_index;
+ }
+change_addr:
+ /* Destination is behind the same NAT, use internal address and port */
+ if (new_dst_addr0)
+ {
+ old_dst_addr0 = ip0->dst_address.as_u32;
+ ip0->dst_address.as_u32 = new_dst_addr0;
+ sum0 = ip0->checksum;
+ sum0 = ip_csum_update (sum0, old_dst_addr0, new_dst_addr0, ip4_header_t,
+ dst_address);
+ ip0->checksum = ip_csum_fold (sum0);
+ }
+ return 0;
+}
+
+static_always_inline u32
+nat44_ei_icmp_in2out (vlib_buffer_t *b0, ip4_header_t *ip0,
+ icmp46_header_t *icmp0, u32 sw_if_index0,
+ u32 rx_fib_index0, vlib_node_runtime_t *node, u32 next0,
+ u32 thread_index, nat44_ei_session_t **p_s0)
{
+ nat44_ei_main_t *nm = &nat44_ei_main;
vlib_main_t *vm = vlib_get_main ();
ip4_address_t addr;
u16 port;
u32 fib_index;
- nat_protocol_t protocol;
+ nat_protocol_t proto;
icmp_echo_header_t *echo0, *inner_echo0 = 0;
ip4_header_t *inner_ip0;
void *l4_header = 0;
ip_csum_t sum0;
u16 checksum0;
u32 next0_tmp;
+ u32 required_thread_index = thread_index;
echo0 = (icmp_echo_header_t *) (icmp0 + 1);
- next0_tmp =
- sm->icmp_match_in2out_cb (sm, node, thread_index, b0, ip0, &addr, &port,
- &fib_index, &protocol, p_s0, &dont_translate);
+ if (PREDICT_TRUE (nm->pat))
+ {
+ next0_tmp = nat44_ei_icmp_match_in2out_slow (
+ node, thread_index, b0, ip0, &addr, &port, &fib_index, &proto, p_s0,
+ &dont_translate);
+ }
+ else
+ {
+ next0_tmp = nat44_ei_icmp_match_in2out_fast (
+ node, thread_index, b0, ip0, &addr, &port, &fib_index, &proto, p_s0,
+ &dont_translate);
+ }
+
if (next0_tmp != ~0)
next0 = next0_tmp;
- if (next0 == SNAT_IN2OUT_NEXT_DROP || dont_translate)
+ if (next0 == NAT44_EI_IN2OUT_NEXT_DROP || dont_translate)
goto out;
if (PREDICT_TRUE (!ip4_is_fragment (ip0)))
checksum0 = ~ip_csum_fold (sum0);
if (PREDICT_FALSE (checksum0 != 0 && checksum0 != 0xffff))
{
- next0 = SNAT_IN2OUT_NEXT_DROP;
+ next0 = NAT44_EI_IN2OUT_NEXT_DROP;
goto out;
}
}
if (!ip4_header_checksum_is_valid (inner_ip0))
{
- next0 = SNAT_IN2OUT_NEXT_DROP;
+ next0 = NAT44_EI_IN2OUT_NEXT_DROP;
goto out;
}
checksum);
icmp0->checksum = ip_csum_fold (sum0);
- switch (protocol)
+ switch (proto)
{
case NAT_PROTOCOL_ICMP:
inner_icmp0 = (icmp46_header_t *) l4_header;
if (vnet_buffer (b0)->sw_if_index[VLIB_TX] == ~0)
{
- if (0 != snat_icmp_hairpinning (sm, b0, ip0, icmp0))
+ if (0 != nat44_ei_icmp_hairpinning (nm, b0, thread_index, ip0, icmp0,
+ &required_thread_index))
vnet_buffer (b0)->sw_if_index[VLIB_TX] = fib_index;
+ if (thread_index != required_thread_index)
+ {
+ vnet_buffer (b0)->snat.required_thread_index = required_thread_index;
+ next0 = NAT44_EI_IN2OUT_NEXT_HAIRPINNING_HANDOFF;
+ }
}
out:
return next0;
}
-#endif
-static inline u32
-icmp_in2out_slow_path (snat_main_t * sm,
- vlib_buffer_t * b0,
- ip4_header_t * ip0,
- icmp46_header_t * icmp0,
- u32 sw_if_index0,
- u32 rx_fib_index0,
- vlib_node_runtime_t * node,
- u32 next0,
- f64 now, u32 thread_index, snat_session_t ** p_s0)
+static_always_inline u32
+nat44_ei_icmp_in2out_slow_path (nat44_ei_main_t *nm, vlib_buffer_t *b0,
+ ip4_header_t *ip0, icmp46_header_t *icmp0,
+ u32 sw_if_index0, u32 rx_fib_index0,
+ vlib_node_runtime_t *node, u32 next0, f64 now,
+ u32 thread_index, nat44_ei_session_t **p_s0)
{
vlib_main_t *vm = vlib_get_main ();
- next0 = icmp_in2out (sm, b0, ip0, icmp0, sw_if_index0, rx_fib_index0, node,
- next0, thread_index, p_s0);
- snat_session_t *s0 = *p_s0;
- if (PREDICT_TRUE (next0 != SNAT_IN2OUT_NEXT_DROP && s0))
+ next0 = nat44_ei_icmp_in2out (b0, ip0, icmp0, sw_if_index0, rx_fib_index0,
+ node, next0, thread_index, p_s0);
+ nat44_ei_session_t *s0 = *p_s0;
+ if (PREDICT_TRUE (next0 != NAT44_EI_IN2OUT_NEXT_DROP && s0))
{
/* Accounting */
nat44_ei_session_update_counters (
s0, now, vlib_buffer_length_in_chain (vm, b0), thread_index);
/* Per-user LRU list maintenance */
- nat44_session_update_lru (sm, s0, thread_index);
+ nat44_ei_session_update_lru (nm, s0, thread_index);
}
return next0;
}
+static_always_inline void
+nat44_ei_hairpinning_sm_unknown_proto (nat44_ei_main_t *nm, vlib_buffer_t *b,
+ ip4_header_t *ip)
+{
+ clib_bihash_kv_8_8_t kv, value;
+ nat44_ei_static_mapping_t *m;
+ u32 old_addr, new_addr;
+ ip_csum_t sum;
+
+ init_nat_k (&kv, ip->dst_address, 0, 0, 0);
+ if (clib_bihash_search_8_8 (&nm->static_mapping_by_external, &kv, &value))
+ return;
+
+ m = pool_elt_at_index (nm->static_mappings, value.value);
+
+ old_addr = ip->dst_address.as_u32;
+ new_addr = ip->dst_address.as_u32 = m->local_addr.as_u32;
+ sum = ip->checksum;
+ sum = ip_csum_update (sum, old_addr, new_addr, ip4_header_t, dst_address);
+ ip->checksum = ip_csum_fold (sum);
+
+ if (vnet_buffer (b)->sw_if_index[VLIB_TX] == ~0)
+ vnet_buffer (b)->sw_if_index[VLIB_TX] = m->fib_index;
+}
+
static int
-nat_in2out_sm_unknown_proto (snat_main_t * sm,
- vlib_buffer_t * b,
- ip4_header_t * ip, u32 rx_fib_index)
+nat_in2out_sm_unknown_proto (nat44_ei_main_t *nm, vlib_buffer_t *b,
+ ip4_header_t *ip, u32 rx_fib_index)
{
clib_bihash_kv_8_8_t kv, value;
- snat_static_mapping_t *m;
+ nat44_ei_static_mapping_t *m;
u32 old_addr, new_addr;
ip_csum_t sum;
init_nat_k (&kv, ip->src_address, 0, rx_fib_index, 0);
- if (clib_bihash_search_8_8 (&sm->static_mapping_by_local, &kv, &value))
+ if (clib_bihash_search_8_8 (&nm->static_mapping_by_local, &kv, &value))
return 1;
- m = pool_elt_at_index (sm->static_mappings, value.value);
+ m = pool_elt_at_index (nm->static_mappings, value.value);
old_addr = ip->src_address.as_u32;
new_addr = ip->src_address.as_u32 = m->external_addr.as_u32;
if (vnet_buffer (b)->sw_if_index[VLIB_TX] == ~0)
{
vnet_buffer (b)->sw_if_index[VLIB_TX] = m->fib_index;
- nat_hairpinning_sm_unknown_proto (sm, b, ip);
+ nat44_ei_hairpinning_sm_unknown_proto (nm, b, ip);
}
return 0;
}
-static inline uword
-snat_in2out_node_fn_inline (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame, int is_slow_path,
- int is_output_feature)
+static_always_inline int
+nat44_ei_hairpinning (vlib_main_t *vm, vlib_node_runtime_t *node,
+ nat44_ei_main_t *nm, u32 thread_index, vlib_buffer_t *b0,
+ ip4_header_t *ip0, udp_header_t *udp0,
+ tcp_header_t *tcp0, u32 proto0, int do_trace,
+ u32 *required_thread_index)
+{
+ nat44_ei_session_t *s0 = NULL;
+ clib_bihash_kv_8_8_t kv0, value0;
+ ip_csum_t sum0;
+ u32 new_dst_addr0 = 0, old_dst_addr0, si = ~0;
+ u16 new_dst_port0 = ~0, old_dst_port0;
+ int rv;
+ ip4_address_t sm0_addr;
+ u16 sm0_port;
+ u32 sm0_fib_index;
+ u32 old_sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_TX];
+
+ /* Check if destination is static mappings */
+ if (!nat44_ei_static_mapping_match (
+ ip0->dst_address, udp0->dst_port, nm->outside_fib_index, proto0,
+ &sm0_addr, &sm0_port, &sm0_fib_index, 1 /* by external */, 0, 0))
+ {
+ new_dst_addr0 = sm0_addr.as_u32;
+ new_dst_port0 = sm0_port;
+ vnet_buffer (b0)->sw_if_index[VLIB_TX] = sm0_fib_index;
+ }
+ /* or active session */
+ else
+ {
+ init_nat_k (&kv0, ip0->dst_address, udp0->dst_port,
+ nm->outside_fib_index, proto0);
+ rv = clib_bihash_search_8_8 (&nm->out2in, &kv0, &value0);
+ if (rv)
+ {
+ rv = 0;
+ goto trace;
+ }
+
+ if (thread_index != nat_value_get_thread_index (&value0))
+ {
+ *required_thread_index = nat_value_get_thread_index (&value0);
+ return 0;
+ }
+
+ si = nat_value_get_session_index (&value0);
+ s0 = pool_elt_at_index (nm->per_thread_data[thread_index].sessions, si);
+ new_dst_addr0 = s0->in2out.addr.as_u32;
+ new_dst_port0 = s0->in2out.port;
+ vnet_buffer (b0)->sw_if_index[VLIB_TX] = s0->in2out.fib_index;
+ }
+
+ /* Check if anything has changed and if not, then return 0. This
+ helps avoid infinite loop, repeating the three nodes
+ nat44-hairpinning-->ip4-lookup-->ip4-local, in case nothing has
+ changed. */
+ old_dst_addr0 = ip0->dst_address.as_u32;
+ old_dst_port0 = tcp0->dst;
+ if (new_dst_addr0 == old_dst_addr0 && new_dst_port0 == old_dst_port0 &&
+ vnet_buffer (b0)->sw_if_index[VLIB_TX] == old_sw_if_index)
+ return 0;
+
+ /* Destination is behind the same NAT, use internal address and port */
+ if (new_dst_addr0)
+ {
+ old_dst_addr0 = ip0->dst_address.as_u32;
+ ip0->dst_address.as_u32 = new_dst_addr0;
+ sum0 = ip0->checksum;
+ sum0 = ip_csum_update (sum0, old_dst_addr0, new_dst_addr0, ip4_header_t,
+ dst_address);
+ ip0->checksum = ip_csum_fold (sum0);
+
+ old_dst_port0 = tcp0->dst;
+ if (PREDICT_TRUE (new_dst_port0 != old_dst_port0))
+ {
+ if (PREDICT_TRUE (proto0 == NAT_PROTOCOL_TCP))
+ {
+ tcp0->dst = new_dst_port0;
+ sum0 = tcp0->checksum;
+ sum0 = ip_csum_update (sum0, old_dst_addr0, new_dst_addr0,
+ ip4_header_t, dst_address);
+ sum0 = ip_csum_update (sum0, old_dst_port0, new_dst_port0,
+ ip4_header_t /* cheat */, length);
+ tcp0->checksum = ip_csum_fold (sum0);
+ }
+ else
+ {
+ udp0->dst_port = new_dst_port0;
+ udp0->checksum = 0;
+ }
+ }
+ else
+ {
+ if (PREDICT_TRUE (proto0 == NAT_PROTOCOL_TCP))
+ {
+ sum0 = tcp0->checksum;
+ sum0 = ip_csum_update (sum0, old_dst_addr0, new_dst_addr0,
+ ip4_header_t, dst_address);
+ tcp0->checksum = ip_csum_fold (sum0);
+ }
+ }
+ rv = 1;
+ goto trace;
+ }
+ rv = 0;
+trace:
+ if (do_trace && PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) &&
+ (b0->flags & VLIB_BUFFER_IS_TRACED)))
+ {
+ nat44_ei_hairpin_trace_t *t = vlib_add_trace (vm, node, b0, sizeof (*t));
+ t->addr.as_u32 = new_dst_addr0;
+ t->port = new_dst_port0;
+ t->fib_index = vnet_buffer (b0)->sw_if_index[VLIB_TX];
+ if (s0)
+ {
+ t->session_index = si;
+ }
+ else
+ {
+ t->session_index = ~0;
+ }
+ }
+ return rv;
+}
+
+static_always_inline uword
+nat44_ei_hairpinning_handoff_fn_inline (vlib_main_t *vm,
+ vlib_node_runtime_t *node,
+ vlib_frame_t *frame, u32 fq_index)
+{
+ vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b;
+ u32 n_enq, n_left_from, *from;
+ u16 thread_indices[VLIB_FRAME_SIZE], *ti;
+
+ from = vlib_frame_vector_args (frame);
+ n_left_from = frame->n_vectors;
+ vlib_get_buffers (vm, from, bufs, n_left_from);
+
+ b = bufs;
+ ti = thread_indices;
+
+ while (n_left_from > 0)
+ {
+ ti[0] = vnet_buffer (b[0])->snat.required_thread_index;
+
+ if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) &&
+ (b[0]->flags & VLIB_BUFFER_IS_TRACED)))
+ {
+ nat44_ei_hairpinning_handoff_trace_t *t =
+ vlib_add_trace (vm, node, b[0], sizeof (*t));
+ t->next_worker_index = ti[0];
+ }
+
+ n_left_from -= 1;
+ ti += 1;
+ b += 1;
+ }
+ n_enq = vlib_buffer_enqueue_to_thread (vm, node, fq_index, from,
+ thread_indices, frame->n_vectors, 1);
+
+ if (n_enq < frame->n_vectors)
+ vlib_node_increment_counter (
+ vm, node->node_index, NAT44_EI_HAIRPINNING_HANDOFF_ERROR_CONGESTION_DROP,
+ frame->n_vectors - n_enq);
+ return frame->n_vectors;
+}
+
+static_always_inline uword
+nat44_ei_in2out_node_fn_inline (vlib_main_t *vm, vlib_node_runtime_t *node,
+ vlib_frame_t *frame, int is_slow_path,
+ int is_output_feature)
{
u32 n_left_from, *from;
- snat_main_t *sm = &snat_main;
+ nat44_ei_main_t *nm = &nat44_ei_main;
f64 now = vlib_time_now (vm);
u32 thread_index = vm->thread_index;
{
vlib_buffer_t *b0, *b1;
u32 next0, next1;
- u32 sw_if_index0, sw_if_index1;
+ u32 rx_sw_if_index0, rx_sw_if_index1;
+ u32 tx_sw_if_index0, tx_sw_if_index1;
+ u32 cntr_sw_if_index0, cntr_sw_if_index1;
ip4_header_t *ip0, *ip1;
ip_csum_t sum0, sum1;
u32 new_addr0, old_addr0, new_addr1, old_addr1;
icmp46_header_t *icmp0, *icmp1;
u32 rx_fib_index0, rx_fib_index1;
u32 proto0, proto1;
- snat_session_t *s0 = 0, *s1 = 0;
+ nat44_ei_session_t *s0 = 0, *s1 = 0;
clib_bihash_kv_8_8_t kv0, value0, kv1, value1;
u32 iph_offset0 = 0, iph_offset1 = 0;
vlib_prefetch_buffer_header (p2, LOAD);
vlib_prefetch_buffer_header (p3, LOAD);
- CLIB_PREFETCH (p2->data, CLIB_CACHE_LINE_BYTES, LOAD);
- CLIB_PREFETCH (p3->data, CLIB_CACHE_LINE_BYTES, LOAD);
+ clib_prefetch_load (p2->data);
+ clib_prefetch_load (p3->data);
}
if (is_output_feature)
tcp0 = (tcp_header_t *) udp0;
icmp0 = (icmp46_header_t *) udp0;
- sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
- rx_fib_index0 = vec_elt (sm->ip4_main->fib_index_by_sw_if_index,
- sw_if_index0);
+ rx_sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
+ tx_sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_TX];
+ cntr_sw_if_index0 =
+ is_output_feature ? tx_sw_if_index0 : rx_sw_if_index0;
+ rx_fib_index0 =
+ vec_elt (nm->ip4_main->fib_index_by_sw_if_index, rx_sw_if_index0);
- next0 = next1 = SNAT_IN2OUT_NEXT_LOOKUP;
+ next0 = next1 = NAT44_EI_IN2OUT_NEXT_LOOKUP;
if (PREDICT_FALSE (ip0->ttl == 1))
{
icmp4_error_set_vnet_buffer (b0, ICMP4_time_exceeded,
ICMP4_time_exceeded_ttl_exceeded_in_transit,
0);
- next0 = SNAT_IN2OUT_NEXT_ICMP_ERROR;
+ next0 = NAT44_EI_IN2OUT_NEXT_ICMP_ERROR;
goto trace00;
}
{
if (PREDICT_FALSE (proto0 == NAT_PROTOCOL_OTHER))
{
- if (nat_in2out_sm_unknown_proto (sm, b0, ip0, rx_fib_index0))
+ if (nat_in2out_sm_unknown_proto (nm, b0, ip0, rx_fib_index0))
{
- next0 = SNAT_IN2OUT_NEXT_DROP;
+ next0 = NAT44_EI_IN2OUT_NEXT_DROP;
b0->error =
- node->errors[SNAT_IN2OUT_ERROR_UNSUPPORTED_PROTOCOL];
+ node->errors[NAT44_EI_IN2OUT_ERROR_UNSUPPORTED_PROTOCOL];
}
- vlib_increment_simple_counter (is_slow_path ? &sm->
- counters.slowpath.in2out.
- other : &sm->counters.fastpath.
- in2out.other, thread_index,
- sw_if_index0, 1);
+ vlib_increment_simple_counter (
+ is_slow_path ? &nm->counters.slowpath.in2out.other :
+ &nm->counters.fastpath.in2out.other,
+ thread_index, cntr_sw_if_index0, 1);
goto trace00;
}
if (PREDICT_FALSE (proto0 == NAT_PROTOCOL_ICMP))
{
- next0 = icmp_in2out_slow_path
- (sm, b0, ip0, icmp0, sw_if_index0, rx_fib_index0,
- node, next0, now, thread_index, &s0);
- vlib_increment_simple_counter (is_slow_path ? &sm->
- counters.slowpath.in2out.
- icmp : &sm->counters.fastpath.
- in2out.icmp, thread_index,
- sw_if_index0, 1);
+ next0 = nat44_ei_icmp_in2out_slow_path (
+ nm, b0, ip0, icmp0, rx_sw_if_index0, rx_fib_index0, node,
+ next0, now, thread_index, &s0);
+ vlib_increment_simple_counter (
+ is_slow_path ? &nm->counters.slowpath.in2out.icmp :
+ &nm->counters.fastpath.in2out.icmp,
+ thread_index, cntr_sw_if_index0, 1);
goto trace00;
}
}
{
if (PREDICT_FALSE (proto0 == NAT_PROTOCOL_OTHER))
{
- next0 = SNAT_IN2OUT_NEXT_SLOW_PATH;
+ next0 = NAT44_EI_IN2OUT_NEXT_SLOW_PATH;
goto trace00;
}
if (PREDICT_FALSE (proto0 == NAT_PROTOCOL_ICMP))
{
- next0 = SNAT_IN2OUT_NEXT_SLOW_PATH;
+ next0 = NAT44_EI_IN2OUT_NEXT_SLOW_PATH;
goto trace00;
}
}
init_nat_k (&kv0, ip0->src_address,
vnet_buffer (b0)->ip.reass.l4_src_port, rx_fib_index0,
proto0);
- if (PREDICT_FALSE (clib_bihash_search_8_8 (&sm->in2out, &kv0, &value0) !=
+ if (PREDICT_FALSE (clib_bihash_search_8_8 (&nm->in2out, &kv0, &value0) !=
0))
{
if (is_slow_path)
{
if (is_output_feature)
{
- if (PREDICT_FALSE
- (nat_not_translate_output_feature
- (sm, ip0, proto0,
+ if (PREDICT_FALSE (nat44_ei_not_translate_output_feature (
+ nm, ip0, proto0,
vnet_buffer (b0)->ip.reass.l4_src_port,
- vnet_buffer (b0)->ip.reass.l4_dst_port,
- thread_index, sw_if_index0)))
+ vnet_buffer (b0)->ip.reass.l4_dst_port, thread_index,
+ rx_sw_if_index0)))
goto trace00;
/*
}
else
{
- if (PREDICT_FALSE
- (snat_not_translate
- (sm, node, sw_if_index0, ip0, proto0,
- rx_fib_index0, thread_index)))
+ if (PREDICT_FALSE (nat44_ei_not_translate (
+ nm, node, rx_sw_if_index0, ip0, proto0, rx_fib_index0,
+ thread_index)))
goto trace00;
}
- next0 = slow_path (sm, b0, ip0,
- ip0->src_address,
+ next0 = slow_path (nm, b0, ip0, ip0->src_address,
vnet_buffer (b0)->ip.reass.l4_src_port,
- rx_fib_index0,
- proto0, &s0, node, next0, thread_index, now);
- if (PREDICT_FALSE (next0 == SNAT_IN2OUT_NEXT_DROP))
+ rx_fib_index0, proto0, &s0, node, next0,
+ thread_index, now);
+ if (PREDICT_FALSE (next0 == NAT44_EI_IN2OUT_NEXT_DROP))
goto trace00;
if (PREDICT_FALSE (!s0))
}
else
{
- next0 = SNAT_IN2OUT_NEXT_SLOW_PATH;
+ next0 = NAT44_EI_IN2OUT_NEXT_SLOW_PATH;
goto trace00;
}
}
else
- s0 = pool_elt_at_index (sm->per_thread_data[thread_index].sessions,
+ s0 = pool_elt_at_index (nm->per_thread_data[thread_index].sessions,
nat_value_get_session_index (&value0));
b0->flags |= VNET_BUFFER_F_IS_NATED;
sum0 = ip_csum_update (sum0, old_port0, new_port0,
ip4_header_t /* cheat */ ,
length /* changed member */ );
- mss_clamping (sm->mss_clamping, tcp0, &sum0);
+ mss_clamping (nm->mss_clamping, tcp0, &sum0);
tcp0->checksum = ip_csum_fold (sum0);
}
- vlib_increment_simple_counter (is_slow_path ? &sm->
- counters.slowpath.in2out.tcp : &sm->
- counters.fastpath.in2out.tcp,
- thread_index, sw_if_index0, 1);
+ vlib_increment_simple_counter (is_slow_path ?
+ &nm->counters.slowpath.in2out.tcp :
+ &nm->counters.fastpath.in2out.tcp,
+ thread_index, cntr_sw_if_index0, 1);
}
else
{
udp0->checksum = ip_csum_fold (sum0);
}
}
- vlib_increment_simple_counter (is_slow_path ? &sm->
- counters.slowpath.in2out.udp : &sm->
- counters.fastpath.in2out.udp,
- thread_index, sw_if_index0, 1);
+ vlib_increment_simple_counter (is_slow_path ?
+ &nm->counters.slowpath.in2out.udp :
+ &nm->counters.fastpath.in2out.udp,
+ thread_index, cntr_sw_if_index0, 1);
}
/* Accounting */
nat44_ei_session_update_counters (
s0, now, vlib_buffer_length_in_chain (vm, b0), thread_index);
/* Per-user LRU list maintenance */
- nat44_session_update_lru (sm, s0, thread_index);
+ nat44_ei_session_update_lru (nm, s0, thread_index);
trace00:
if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)
&& (b0->flags & VLIB_BUFFER_IS_TRACED)))
{
- snat_in2out_trace_t *t = vlib_add_trace (vm, node, b0, sizeof (*t));
+ nat44_ei_in2out_trace_t *t =
+ vlib_add_trace (vm, node, b0, sizeof (*t));
t->is_slow_path = is_slow_path;
- t->sw_if_index = sw_if_index0;
+ t->sw_if_index = rx_sw_if_index0;
t->next_index = next0;
t->session_index = ~0;
if (s0)
- t->session_index =
- s0 - sm->per_thread_data[thread_index].sessions;
+ t->session_index = s0 - nm->per_thread_data[thread_index].sessions;
}
- if (next0 == SNAT_IN2OUT_NEXT_DROP)
+ if (next0 == NAT44_EI_IN2OUT_NEXT_DROP)
{
- vlib_increment_simple_counter (is_slow_path ? &sm->
- counters.slowpath.in2out.
- drops : &sm->counters.fastpath.
- in2out.drops, thread_index,
- sw_if_index0, 1);
+ vlib_increment_simple_counter (
+ is_slow_path ? &nm->counters.slowpath.in2out.drops :
+ &nm->counters.fastpath.in2out.drops,
+ thread_index, cntr_sw_if_index0, 1);
}
if (is_output_feature)
tcp1 = (tcp_header_t *) udp1;
icmp1 = (icmp46_header_t *) udp1;
- sw_if_index1 = vnet_buffer (b1)->sw_if_index[VLIB_RX];
- rx_fib_index1 = vec_elt (sm->ip4_main->fib_index_by_sw_if_index,
- sw_if_index1);
+ rx_sw_if_index1 = vnet_buffer (b1)->sw_if_index[VLIB_RX];
+ tx_sw_if_index1 = vnet_buffer (b1)->sw_if_index[VLIB_TX];
+ cntr_sw_if_index1 =
+ is_output_feature ? tx_sw_if_index1 : rx_sw_if_index1;
+ rx_fib_index1 =
+ vec_elt (nm->ip4_main->fib_index_by_sw_if_index, rx_sw_if_index1);
if (PREDICT_FALSE (ip1->ttl == 1))
{
icmp4_error_set_vnet_buffer (b1, ICMP4_time_exceeded,
ICMP4_time_exceeded_ttl_exceeded_in_transit,
0);
- next1 = SNAT_IN2OUT_NEXT_ICMP_ERROR;
+ next1 = NAT44_EI_IN2OUT_NEXT_ICMP_ERROR;
goto trace01;
}
{
if (PREDICT_FALSE (proto1 == NAT_PROTOCOL_OTHER))
{
- if (nat_in2out_sm_unknown_proto (sm, b1, ip1, rx_fib_index1))
+ if (nat_in2out_sm_unknown_proto (nm, b1, ip1, rx_fib_index1))
{
- next1 = SNAT_IN2OUT_NEXT_DROP;
+ next1 = NAT44_EI_IN2OUT_NEXT_DROP;
b1->error =
- node->errors[SNAT_IN2OUT_ERROR_UNSUPPORTED_PROTOCOL];
+ node->errors[NAT44_EI_IN2OUT_ERROR_UNSUPPORTED_PROTOCOL];
}
- vlib_increment_simple_counter (is_slow_path ? &sm->
- counters.slowpath.in2out.
- other : &sm->counters.fastpath.
- in2out.other, thread_index,
- sw_if_index1, 1);
+ vlib_increment_simple_counter (
+ is_slow_path ? &nm->counters.slowpath.in2out.other :
+ &nm->counters.fastpath.in2out.other,
+ thread_index, cntr_sw_if_index1, 1);
goto trace01;
}
if (PREDICT_FALSE (proto1 == NAT_PROTOCOL_ICMP))
{
- next1 = icmp_in2out_slow_path
- (sm, b1, ip1, icmp1, sw_if_index1, rx_fib_index1, node,
- next1, now, thread_index, &s1);
- vlib_increment_simple_counter (is_slow_path ? &sm->
- counters.slowpath.in2out.
- icmp : &sm->counters.fastpath.
- in2out.icmp, thread_index,
- sw_if_index1, 1);
+ next1 = nat44_ei_icmp_in2out_slow_path (
+ nm, b1, ip1, icmp1, rx_sw_if_index1, rx_fib_index1, node,
+ next1, now, thread_index, &s1);
+ vlib_increment_simple_counter (
+ is_slow_path ? &nm->counters.slowpath.in2out.icmp :
+ &nm->counters.fastpath.in2out.icmp,
+ thread_index, cntr_sw_if_index1, 1);
goto trace01;
}
}
{
if (PREDICT_FALSE (proto1 == NAT_PROTOCOL_OTHER))
{
- next1 = SNAT_IN2OUT_NEXT_SLOW_PATH;
+ next1 = NAT44_EI_IN2OUT_NEXT_SLOW_PATH;
goto trace01;
}
if (PREDICT_FALSE (proto1 == NAT_PROTOCOL_ICMP))
{
- next1 = SNAT_IN2OUT_NEXT_SLOW_PATH;
+ next1 = NAT44_EI_IN2OUT_NEXT_SLOW_PATH;
goto trace01;
}
}
init_nat_k (&kv1, ip1->src_address,
vnet_buffer (b1)->ip.reass.l4_src_port, rx_fib_index1,
proto1);
- if (PREDICT_FALSE (clib_bihash_search_8_8 (&sm->in2out, &kv1, &value1) !=
+ if (PREDICT_FALSE (clib_bihash_search_8_8 (&nm->in2out, &kv1, &value1) !=
0))
{
if (is_slow_path)
{
if (is_output_feature)
{
- if (PREDICT_FALSE
- (nat_not_translate_output_feature
- (sm, ip1, proto1,
+ if (PREDICT_FALSE (nat44_ei_not_translate_output_feature (
+ nm, ip1, proto1,
vnet_buffer (b1)->ip.reass.l4_src_port,
- vnet_buffer (b1)->ip.reass.l4_dst_port,
- thread_index, sw_if_index1)))
+ vnet_buffer (b1)->ip.reass.l4_dst_port, thread_index,
+ rx_sw_if_index1)))
goto trace01;
/*
}
else
{
- if (PREDICT_FALSE
- (snat_not_translate
- (sm, node, sw_if_index1, ip1, proto1,
- rx_fib_index1, thread_index)))
+ if (PREDICT_FALSE (nat44_ei_not_translate (
+ nm, node, rx_sw_if_index1, ip1, proto1, rx_fib_index1,
+ thread_index)))
goto trace01;
}
- next1 =
- slow_path (sm, b1, ip1, ip1->src_address,
- vnet_buffer (b1)->ip.reass.l4_src_port,
- rx_fib_index1, proto1, &s1, node, next1,
- thread_index, now);
- if (PREDICT_FALSE (next1 == SNAT_IN2OUT_NEXT_DROP))
+ next1 = slow_path (nm, b1, ip1, ip1->src_address,
+ vnet_buffer (b1)->ip.reass.l4_src_port,
+ rx_fib_index1, proto1, &s1, node, next1,
+ thread_index, now);
+ if (PREDICT_FALSE (next1 == NAT44_EI_IN2OUT_NEXT_DROP))
goto trace01;
if (PREDICT_FALSE (!s1))
}
else
{
- next1 = SNAT_IN2OUT_NEXT_SLOW_PATH;
+ next1 = NAT44_EI_IN2OUT_NEXT_SLOW_PATH;
goto trace01;
}
}
else
- s1 = pool_elt_at_index (sm->per_thread_data[thread_index].sessions,
+ s1 = pool_elt_at_index (nm->per_thread_data[thread_index].sessions,
nat_value_get_session_index (&value1));
b1->flags |= VNET_BUFFER_F_IS_NATED;
sum1 = ip_csum_update (sum1, old_port1, new_port1,
ip4_header_t /* cheat */ ,
length /* changed member */ );
- mss_clamping (sm->mss_clamping, tcp1, &sum1);
+ mss_clamping (nm->mss_clamping, tcp1, &sum1);
tcp1->checksum = ip_csum_fold (sum1);
}
- vlib_increment_simple_counter (is_slow_path ? &sm->
- counters.slowpath.in2out.tcp : &sm->
- counters.fastpath.in2out.tcp,
- thread_index, sw_if_index1, 1);
+ vlib_increment_simple_counter (is_slow_path ?
+ &nm->counters.slowpath.in2out.tcp :
+ &nm->counters.fastpath.in2out.tcp,
+ thread_index, cntr_sw_if_index1, 1);
}
else
{
udp1->checksum = ip_csum_fold (sum1);
}
}
- vlib_increment_simple_counter (is_slow_path ? &sm->
- counters.slowpath.in2out.udp : &sm->
- counters.fastpath.in2out.udp,
- thread_index, sw_if_index1, 1);
+ vlib_increment_simple_counter (is_slow_path ?
+ &nm->counters.slowpath.in2out.udp :
+ &nm->counters.fastpath.in2out.udp,
+ thread_index, cntr_sw_if_index1, 1);
}
/* Accounting */
nat44_ei_session_update_counters (
s1, now, vlib_buffer_length_in_chain (vm, b1), thread_index);
/* Per-user LRU list maintenance */
- nat44_session_update_lru (sm, s1, thread_index);
+ nat44_ei_session_update_lru (nm, s1, thread_index);
trace01:
if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)
&& (b1->flags & VLIB_BUFFER_IS_TRACED)))
{
- snat_in2out_trace_t *t = vlib_add_trace (vm, node, b1, sizeof (*t));
- t->sw_if_index = sw_if_index1;
+ nat44_ei_in2out_trace_t *t =
+ vlib_add_trace (vm, node, b1, sizeof (*t));
+ t->sw_if_index = rx_sw_if_index1;
t->next_index = next1;
t->session_index = ~0;
if (s1)
- t->session_index =
- s1 - sm->per_thread_data[thread_index].sessions;
+ t->session_index = s1 - nm->per_thread_data[thread_index].sessions;
}
- if (next1 == SNAT_IN2OUT_NEXT_DROP)
+ if (next1 == NAT44_EI_IN2OUT_NEXT_DROP)
{
- vlib_increment_simple_counter (is_slow_path ? &sm->
- counters.slowpath.in2out.
- drops : &sm->counters.fastpath.
- in2out.drops, thread_index,
- sw_if_index1, 1);
+ vlib_increment_simple_counter (
+ is_slow_path ? &nm->counters.slowpath.in2out.drops :
+ &nm->counters.fastpath.in2out.drops,
+ thread_index, cntr_sw_if_index1, 1);
}
n_left_from -= 2;
{
vlib_buffer_t *b0;
u32 next0;
- u32 sw_if_index0;
+ u32 rx_sw_if_index0;
+ u32 tx_sw_if_index0;
+ u32 cntr_sw_if_index0;
ip4_header_t *ip0;
ip_csum_t sum0;
u32 new_addr0, old_addr0;
icmp46_header_t *icmp0;
u32 rx_fib_index0;
u32 proto0;
- snat_session_t *s0 = 0;
+ nat44_ei_session_t *s0 = 0;
clib_bihash_kv_8_8_t kv0, value0;
u32 iph_offset0 = 0;
b0 = *b;
b++;
- next0 = SNAT_IN2OUT_NEXT_LOOKUP;
+ next0 = NAT44_EI_IN2OUT_NEXT_LOOKUP;
if (is_output_feature)
iph_offset0 = vnet_buffer (b0)->ip.reass.save_rewrite_length;
tcp0 = (tcp_header_t *) udp0;
icmp0 = (icmp46_header_t *) udp0;
- sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
- rx_fib_index0 = vec_elt (sm->ip4_main->fib_index_by_sw_if_index,
- sw_if_index0);
+ rx_sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
+ tx_sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_TX];
+ cntr_sw_if_index0 =
+ is_output_feature ? tx_sw_if_index0 : rx_sw_if_index0;
+ rx_fib_index0 =
+ vec_elt (nm->ip4_main->fib_index_by_sw_if_index, rx_sw_if_index0);
if (PREDICT_FALSE (ip0->ttl == 1))
{
icmp4_error_set_vnet_buffer (b0, ICMP4_time_exceeded,
ICMP4_time_exceeded_ttl_exceeded_in_transit,
0);
- next0 = SNAT_IN2OUT_NEXT_ICMP_ERROR;
+ next0 = NAT44_EI_IN2OUT_NEXT_ICMP_ERROR;
goto trace0;
}
{
if (PREDICT_FALSE (proto0 == NAT_PROTOCOL_OTHER))
{
- if (nat_in2out_sm_unknown_proto (sm, b0, ip0, rx_fib_index0))
+ if (nat_in2out_sm_unknown_proto (nm, b0, ip0, rx_fib_index0))
{
- next0 = SNAT_IN2OUT_NEXT_DROP;
+ next0 = NAT44_EI_IN2OUT_NEXT_DROP;
b0->error =
- node->errors[SNAT_IN2OUT_ERROR_UNSUPPORTED_PROTOCOL];
+ node->errors[NAT44_EI_IN2OUT_ERROR_UNSUPPORTED_PROTOCOL];
}
- vlib_increment_simple_counter (is_slow_path ? &sm->
- counters.slowpath.in2out.
- other : &sm->counters.fastpath.
- in2out.other, thread_index,
- sw_if_index0, 1);
+ vlib_increment_simple_counter (
+ is_slow_path ? &nm->counters.slowpath.in2out.other :
+ &nm->counters.fastpath.in2out.other,
+ thread_index, cntr_sw_if_index0, 1);
goto trace0;
}
if (PREDICT_FALSE (proto0 == NAT_PROTOCOL_ICMP))
{
- next0 = icmp_in2out_slow_path
- (sm, b0, ip0, icmp0, sw_if_index0, rx_fib_index0, node,
- next0, now, thread_index, &s0);
- vlib_increment_simple_counter (is_slow_path ? &sm->
- counters.slowpath.in2out.
- icmp : &sm->counters.fastpath.
- in2out.icmp, thread_index,
- sw_if_index0, 1);
+ next0 = nat44_ei_icmp_in2out_slow_path (
+ nm, b0, ip0, icmp0, rx_sw_if_index0, rx_fib_index0, node,
+ next0, now, thread_index, &s0);
+ vlib_increment_simple_counter (
+ is_slow_path ? &nm->counters.slowpath.in2out.icmp :
+ &nm->counters.fastpath.in2out.icmp,
+ thread_index, cntr_sw_if_index0, 1);
goto trace0;
}
}
{
if (PREDICT_FALSE (proto0 == NAT_PROTOCOL_OTHER))
{
- next0 = SNAT_IN2OUT_NEXT_SLOW_PATH;
+ next0 = NAT44_EI_IN2OUT_NEXT_SLOW_PATH;
goto trace0;
}
if (PREDICT_FALSE (proto0 == NAT_PROTOCOL_ICMP))
{
- next0 = SNAT_IN2OUT_NEXT_SLOW_PATH;
+ next0 = NAT44_EI_IN2OUT_NEXT_SLOW_PATH;
goto trace0;
}
}
vnet_buffer (b0)->ip.reass.l4_src_port, rx_fib_index0,
proto0);
- if (clib_bihash_search_8_8 (&sm->in2out, &kv0, &value0))
+ if (clib_bihash_search_8_8 (&nm->in2out, &kv0, &value0))
{
if (is_slow_path)
{
if (is_output_feature)
{
- if (PREDICT_FALSE
- (nat_not_translate_output_feature
- (sm, ip0, proto0,
+ if (PREDICT_FALSE (nat44_ei_not_translate_output_feature (
+ nm, ip0, proto0,
vnet_buffer (b0)->ip.reass.l4_src_port,
- vnet_buffer (b0)->ip.reass.l4_dst_port,
- thread_index, sw_if_index0)))
+ vnet_buffer (b0)->ip.reass.l4_dst_port, thread_index,
+ rx_sw_if_index0)))
goto trace0;
/*
}
else
{
- if (PREDICT_FALSE
- (snat_not_translate
- (sm, node, sw_if_index0, ip0, proto0, rx_fib_index0,
+ if (PREDICT_FALSE (nat44_ei_not_translate (
+ nm, node, rx_sw_if_index0, ip0, proto0, rx_fib_index0,
thread_index)))
goto trace0;
}
- next0 =
- slow_path (sm, b0, ip0, ip0->src_address,
- vnet_buffer (b0)->ip.reass.l4_src_port,
- rx_fib_index0, proto0, &s0, node, next0,
- thread_index, now);
+ next0 = slow_path (nm, b0, ip0, ip0->src_address,
+ vnet_buffer (b0)->ip.reass.l4_src_port,
+ rx_fib_index0, proto0, &s0, node, next0,
+ thread_index, now);
- if (PREDICT_FALSE (next0 == SNAT_IN2OUT_NEXT_DROP))
+ if (PREDICT_FALSE (next0 == NAT44_EI_IN2OUT_NEXT_DROP))
goto trace0;
if (PREDICT_FALSE (!s0))
}
else
{
- next0 = SNAT_IN2OUT_NEXT_SLOW_PATH;
+ next0 = NAT44_EI_IN2OUT_NEXT_SLOW_PATH;
goto trace0;
}
}
else
- s0 = pool_elt_at_index (sm->per_thread_data[thread_index].sessions,
+ s0 = pool_elt_at_index (nm->per_thread_data[thread_index].sessions,
nat_value_get_session_index (&value0));
b0->flags |= VNET_BUFFER_F_IS_NATED;
ip_csum_update (sum0, old_port0, new_port0,
ip4_header_t /* cheat */ ,
length /* changed member */ );
- mss_clamping (sm->mss_clamping, tcp0, &sum0);
+ mss_clamping (nm->mss_clamping, tcp0, &sum0);
tcp0->checksum = ip_csum_fold (sum0);
}
- vlib_increment_simple_counter (is_slow_path ? &sm->
- counters.slowpath.in2out.tcp : &sm->
- counters.fastpath.in2out.tcp,
- thread_index, sw_if_index0, 1);
+ vlib_increment_simple_counter (is_slow_path ?
+ &nm->counters.slowpath.in2out.tcp :
+ &nm->counters.fastpath.in2out.tcp,
+ thread_index, cntr_sw_if_index0, 1);
}
else
{
udp0->checksum = ip_csum_fold (sum0);
}
}
- vlib_increment_simple_counter (is_slow_path ? &sm->
- counters.slowpath.in2out.udp : &sm->
- counters.fastpath.in2out.udp,
- thread_index, sw_if_index0, 1);
+ vlib_increment_simple_counter (is_slow_path ?
+ &nm->counters.slowpath.in2out.udp :
+ &nm->counters.fastpath.in2out.udp,
+ thread_index, cntr_sw_if_index0, 1);
}
/* Accounting */
nat44_ei_session_update_counters (
s0, now, vlib_buffer_length_in_chain (vm, b0), thread_index);
/* Per-user LRU list maintenance */
- nat44_session_update_lru (sm, s0, thread_index);
+ nat44_ei_session_update_lru (nm, s0, thread_index);
trace0:
if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)
&& (b0->flags & VLIB_BUFFER_IS_TRACED)))
{
- snat_in2out_trace_t *t = vlib_add_trace (vm, node, b0, sizeof (*t));
+ nat44_ei_in2out_trace_t *t =
+ vlib_add_trace (vm, node, b0, sizeof (*t));
t->is_slow_path = is_slow_path;
- t->sw_if_index = sw_if_index0;
+ t->sw_if_index = rx_sw_if_index0;
t->next_index = next0;
t->session_index = ~0;
if (s0)
- t->session_index =
- s0 - sm->per_thread_data[thread_index].sessions;
+ t->session_index = s0 - nm->per_thread_data[thread_index].sessions;
}
- if (next0 == SNAT_IN2OUT_NEXT_DROP)
+ if (next0 == NAT44_EI_IN2OUT_NEXT_DROP)
{
- vlib_increment_simple_counter (is_slow_path ? &sm->
- counters.slowpath.in2out.
- drops : &sm->counters.fastpath.
- in2out.drops, thread_index,
- sw_if_index0, 1);
+ vlib_increment_simple_counter (
+ is_slow_path ? &nm->counters.slowpath.in2out.drops :
+ &nm->counters.fastpath.in2out.drops,
+ thread_index, cntr_sw_if_index0, 1);
}
n_left_from--;
return frame->n_vectors;
}
-VLIB_NODE_FN (snat_in2out_node) (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame)
+static_always_inline uword
+nat44_ei_in2out_hairpinning_finish_inline (vlib_main_t *vm,
+ vlib_node_runtime_t *node,
+ vlib_frame_t *frame)
{
- return snat_in2out_node_fn_inline (vm, node, frame, 0 /* is_slow_path */ ,
- 0);
-}
-
-/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (snat_in2out_node) = {
- .name = "nat44-in2out",
- .vector_size = sizeof (u32),
- .format_trace = format_snat_in2out_trace,
- .type = VLIB_NODE_TYPE_INTERNAL,
-
- .n_errors = ARRAY_LEN(snat_in2out_error_strings),
- .error_strings = snat_in2out_error_strings,
-
- .runtime_data_bytes = sizeof (snat_runtime_t),
+ u32 n_left_from, *from, *to_next;
+ u32 thread_index = vm->thread_index;
+ nat44_ei_in2out_next_t next_index;
+ nat44_ei_main_t *nm = &nat44_ei_main;
+ int is_hairpinning = 0;
- .n_next_nodes = SNAT_IN2OUT_N_NEXT,
+ from = vlib_frame_vector_args (frame);
+ n_left_from = frame->n_vectors;
+ next_index = node->cached_next_index;
- /* edit / add dispositions here */
- .next_nodes = {
- [SNAT_IN2OUT_NEXT_DROP] = "error-drop",
- [SNAT_IN2OUT_NEXT_LOOKUP] = "ip4-lookup",
- [SNAT_IN2OUT_NEXT_SLOW_PATH] = "nat44-in2out-slowpath",
- [SNAT_IN2OUT_NEXT_ICMP_ERROR] = "ip4-icmp-error",
- },
-};
-/* *INDENT-ON* */
+ while (n_left_from > 0)
+ {
+ u32 n_left_to_next;
-VLIB_NODE_FN (snat_in2out_output_node) (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame)
-{
- return snat_in2out_node_fn_inline (vm, node, frame, 0 /* is_slow_path */ ,
- 1);
-}
+ vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
-/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (snat_in2out_output_node) = {
- .name = "nat44-in2out-output",
- .vector_size = sizeof (u32),
- .format_trace = format_snat_in2out_trace,
- .type = VLIB_NODE_TYPE_INTERNAL,
+ while (n_left_from > 0 && n_left_to_next > 0)
+ {
+ u32 bi0;
+ vlib_buffer_t *b0;
+ u32 next0;
+ u32 sw_if_index0;
+ ip4_header_t *ip0;
+ udp_header_t *udp0;
+ tcp_header_t *tcp0;
+ icmp46_header_t *icmp0;
+ u32 proto0;
+ u32 required_thread_index = thread_index;
- .n_errors = ARRAY_LEN(snat_in2out_error_strings),
- .error_strings = snat_in2out_error_strings,
+ bi0 = from[0];
+ to_next[0] = bi0;
+ from += 1;
+ to_next += 1;
+ n_left_from -= 1;
+ n_left_to_next -= 1;
- .runtime_data_bytes = sizeof (snat_runtime_t),
+ b0 = vlib_get_buffer (vm, bi0);
+ next0 = NAT44_EI_IN2OUT_HAIRPINNING_FINISH_NEXT_LOOKUP;
- .n_next_nodes = SNAT_IN2OUT_N_NEXT,
+ ip0 = vlib_buffer_get_current (b0);
+ udp0 = ip4_next_header (ip0);
+ tcp0 = (tcp_header_t *) udp0;
+ icmp0 = (icmp46_header_t *) udp0;
- /* edit / add dispositions here */
- .next_nodes = {
- [SNAT_IN2OUT_NEXT_DROP] = "error-drop",
- [SNAT_IN2OUT_NEXT_LOOKUP] = "interface-output",
- [SNAT_IN2OUT_NEXT_SLOW_PATH] = "nat44-in2out-output-slowpath",
- [SNAT_IN2OUT_NEXT_ICMP_ERROR] = "ip4-icmp-error",
- },
-};
-/* *INDENT-ON* */
+ sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
+ proto0 = ip_proto_to_nat_proto (ip0->protocol);
-VLIB_NODE_FN (snat_in2out_slowpath_node) (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame)
-{
- return snat_in2out_node_fn_inline (vm, node, frame, 1 /* is_slow_path */ ,
- 0);
-}
+ switch (proto0)
+ {
+ case NAT_PROTOCOL_TCP:
+ // fallthrough
+ case NAT_PROTOCOL_UDP:
+ is_hairpinning = nat44_ei_hairpinning (
+ vm, node, nm, thread_index, b0, ip0, udp0, tcp0, proto0,
+ 0 /* do_trace */, &required_thread_index);
+ break;
+ case NAT_PROTOCOL_ICMP:
+ is_hairpinning = (0 == nat44_ei_icmp_hairpinning (
+ nm, b0, thread_index, ip0, icmp0,
+ &required_thread_index));
+ break;
+ case NAT_PROTOCOL_OTHER:
+ // this should never happen
+ next0 = NAT44_EI_IN2OUT_HAIRPINNING_FINISH_NEXT_DROP;
+ break;
+ }
-/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (snat_in2out_slowpath_node) = {
- .name = "nat44-in2out-slowpath",
- .vector_size = sizeof (u32),
- .format_trace = format_snat_in2out_trace,
- .type = VLIB_NODE_TYPE_INTERNAL,
+ if (thread_index != required_thread_index)
+ {
+ // but we already did a handoff ...
+ next0 = NAT44_EI_IN2OUT_HAIRPINNING_FINISH_NEXT_DROP;
+ }
- .n_errors = ARRAY_LEN(snat_in2out_error_strings),
- .error_strings = snat_in2out_error_strings,
+ if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) &&
+ (b0->flags & VLIB_BUFFER_IS_TRACED)))
+ {
+ nat44_ei_in2out_trace_t *t =
+ vlib_add_trace (vm, node, b0, sizeof (*t));
+ t->sw_if_index = sw_if_index0;
+ t->next_index = next0;
+ t->is_hairpinning = is_hairpinning;
+ }
- .runtime_data_bytes = sizeof (snat_runtime_t),
+ if (next0 != NAT44_EI_IN2OUT_HAIRPINNING_FINISH_NEXT_DROP)
+ {
+ vlib_increment_simple_counter (
+ &nm->counters.fastpath.in2out.other, sw_if_index0,
+ vm->thread_index, 1);
+ }
- .n_next_nodes = SNAT_IN2OUT_N_NEXT,
+ vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
+ n_left_to_next, bi0, next0);
+ }
- /* edit / add dispositions here */
- .next_nodes = {
- [SNAT_IN2OUT_NEXT_DROP] = "error-drop",
- [SNAT_IN2OUT_NEXT_LOOKUP] = "ip4-lookup",
- [SNAT_IN2OUT_NEXT_SLOW_PATH] = "nat44-in2out-slowpath",
- [SNAT_IN2OUT_NEXT_ICMP_ERROR] = "ip4-icmp-error",
- },
-};
-/* *INDENT-ON* */
+ vlib_put_next_frame (vm, node, next_index, n_left_to_next);
+ }
-VLIB_NODE_FN (snat_in2out_output_slowpath_node) (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame)
-{
- return snat_in2out_node_fn_inline (vm, node, frame, 1 /* is_slow_path */ ,
- 1);
+ return frame->n_vectors;
}
-/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (snat_in2out_output_slowpath_node) = {
- .name = "nat44-in2out-output-slowpath",
- .vector_size = sizeof (u32),
- .format_trace = format_snat_in2out_trace,
- .type = VLIB_NODE_TYPE_INTERNAL,
-
- .n_errors = ARRAY_LEN(snat_in2out_error_strings),
- .error_strings = snat_in2out_error_strings,
-
- .runtime_data_bytes = sizeof (snat_runtime_t),
-
- .n_next_nodes = SNAT_IN2OUT_N_NEXT,
-
- /* edit / add dispositions here */
- .next_nodes = {
- [SNAT_IN2OUT_NEXT_DROP] = "error-drop",
- [SNAT_IN2OUT_NEXT_LOOKUP] = "interface-output",
- [SNAT_IN2OUT_NEXT_SLOW_PATH] = "nat44-in2out-output-slowpath",
- [SNAT_IN2OUT_NEXT_ICMP_ERROR] = "ip4-icmp-error",
- },
-};
-/* *INDENT-ON* */
-
-VLIB_NODE_FN (snat_in2out_fast_node) (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame)
+VLIB_NODE_FN (nat44_ei_hairpinning_node)
+(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
{
u32 n_left_from, *from, *to_next;
- snat_in2out_next_t next_index;
- snat_main_t *sm = &snat_main;
- int is_hairpinning = 0;
+ u32 thread_index = vm->thread_index;
+ nat44_ei_hairpin_next_t next_index;
+ nat44_ei_main_t *nm = &nat44_ei_main;
+ vnet_feature_main_t *fm = &feature_main;
+ u8 arc_index = vnet_feat_arc_ip4_local.feature_arc_index;
+ vnet_feature_config_main_t *cm = &fm->feature_config_mains[arc_index];
from = vlib_frame_vector_args (frame);
n_left_from = frame->n_vectors;
u32 bi0;
vlib_buffer_t *b0;
u32 next0;
- u32 sw_if_index0;
ip4_header_t *ip0;
- ip_csum_t sum0;
- u32 new_addr0, old_addr0;
- u16 old_port0, new_port0;
+ u32 proto0;
udp_header_t *udp0;
tcp_header_t *tcp0;
- icmp46_header_t *icmp0;
- u32 proto0;
- u32 rx_fib_index0;
- ip4_address_t sm0_addr;
- u16 sm0_port;
- u32 sm0_fib_index;
-
+ u32 sw_if_index0;
+ u32 required_thread_index = thread_index;
- /* speculatively enqueue b0 to the current next frame */
bi0 = from[0];
to_next[0] = bi0;
from += 1;
n_left_to_next -= 1;
b0 = vlib_get_buffer (vm, bi0);
- next0 = SNAT_IN2OUT_NEXT_LOOKUP;
-
ip0 = vlib_buffer_get_current (b0);
udp0 = ip4_next_header (ip0);
tcp0 = (tcp_header_t *) udp0;
- icmp0 = (icmp46_header_t *) udp0;
-
sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
- rx_fib_index0 =
- ip4_fib_table_get_index_for_sw_if_index (sw_if_index0);
-
- if (PREDICT_FALSE (ip0->ttl == 1))
- {
- vnet_buffer (b0)->sw_if_index[VLIB_TX] = (u32) ~ 0;
- icmp4_error_set_vnet_buffer (b0, ICMP4_time_exceeded,
- ICMP4_time_exceeded_ttl_exceeded_in_transit,
- 0);
- next0 = SNAT_IN2OUT_NEXT_ICMP_ERROR;
- goto trace0;
- }
proto0 = ip_proto_to_nat_proto (ip0->protocol);
+ int next0_resolved = 0;
- if (PREDICT_FALSE (proto0 == NAT_PROTOCOL_OTHER))
- goto trace0;
+ if (nat44_ei_hairpinning (vm, node, nm, thread_index, b0, ip0, udp0,
+ tcp0, proto0, 1, &required_thread_index))
+ {
+ next0 = NAT44_EI_HAIRPIN_NEXT_LOOKUP;
+ next0_resolved = 1;
+ }
- if (PREDICT_FALSE (proto0 == NAT_PROTOCOL_ICMP))
+ if (thread_index != required_thread_index)
{
- next0 = icmp_in2out (sm, b0, ip0, icmp0, sw_if_index0,
- rx_fib_index0, node, next0, ~0, 0);
- goto trace0;
+ vnet_buffer (b0)->snat.required_thread_index =
+ required_thread_index;
+ next0 = NAT44_EI_HAIRPIN_NEXT_HANDOFF;
+ next0_resolved = 1;
}
- if (nat44_ei_static_mapping_match (
- ip0->src_address, udp0->src_port, rx_fib_index0, proto0,
- &sm0_addr, &sm0_port, &sm0_fib_index, 0, 0, 0))
+ if (!next0_resolved)
+ vnet_get_config_data (&cm->config_main, &b0->current_config_index,
+ &next0, 0);
+
+ if (next0 != NAT44_EI_HAIRPIN_NEXT_DROP)
{
- b0->error = node->errors[SNAT_IN2OUT_ERROR_NO_TRANSLATION];
- next0 = SNAT_IN2OUT_NEXT_DROP;
- goto trace0;
+ vlib_increment_simple_counter (
+ &nm->counters.hairpinning, vm->thread_index, sw_if_index0, 1);
}
- new_addr0 = sm0_addr.as_u32;
- new_port0 = sm0_port;
- vnet_buffer (b0)->sw_if_index[VLIB_TX] = sm0_fib_index;
- old_addr0 = ip0->src_address.as_u32;
- ip0->src_address.as_u32 = new_addr0;
+ vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
+ n_left_to_next, bi0, next0);
+ }
- sum0 = ip0->checksum;
- sum0 = ip_csum_update (sum0, old_addr0, new_addr0,
- ip4_header_t,
- src_address /* changed member */ );
- ip0->checksum = ip_csum_fold (sum0);
+ vlib_put_next_frame (vm, node, next_index, n_left_to_next);
+ }
- if (PREDICT_FALSE (new_port0 != udp0->dst_port))
- {
- old_port0 = udp0->src_port;
- udp0->src_port = new_port0;
+ return frame->n_vectors;
+}
- if (PREDICT_TRUE (proto0 == NAT_PROTOCOL_TCP))
- {
- sum0 = tcp0->checksum;
- sum0 = ip_csum_update (sum0, old_addr0, new_addr0,
- ip4_header_t,
- dst_address /* changed member */ );
- sum0 = ip_csum_update (sum0, old_port0, new_port0,
- ip4_header_t /* cheat */ ,
- length /* changed member */ );
- mss_clamping (sm->mss_clamping, tcp0, &sum0);
- tcp0->checksum = ip_csum_fold (sum0);
- }
- else if (udp0->checksum)
- {
- sum0 = udp0->checksum;
- sum0 = ip_csum_update (sum0, old_addr0, new_addr0,
- ip4_header_t,
- dst_address /* changed member */ );
- sum0 = ip_csum_update (sum0, old_port0, new_port0,
- ip4_header_t /* cheat */ ,
- length /* changed member */ );
- udp0->checksum = ip_csum_fold (sum0);
- }
- }
- else
- {
- if (PREDICT_TRUE (proto0 == NAT_PROTOCOL_TCP))
- {
- sum0 = tcp0->checksum;
- sum0 = ip_csum_update (sum0, old_addr0, new_addr0,
- ip4_header_t,
- dst_address /* changed member */ );
- mss_clamping (sm->mss_clamping, tcp0, &sum0);
- tcp0->checksum = ip_csum_fold (sum0);
- }
- else if (udp0->checksum)
- {
- sum0 = udp0->checksum;
- sum0 = ip_csum_update (sum0, old_addr0, new_addr0,
- ip4_header_t,
- dst_address /* changed member */ );
- udp0->checksum = ip_csum_fold (sum0);
- }
- }
+VLIB_NODE_FN (nat44_ei_in2out_node)
+(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
+{
+ return nat44_ei_in2out_node_fn_inline (vm, node, frame, 0, 0);
+}
- /* Hairpinning */
- is_hairpinning = snat_hairpinning (vm, node, sm, b0, ip0, udp0, tcp0,
- proto0, 0 /* do_trace */);
+VLIB_NODE_FN (nat44_ei_in2out_output_node)
+(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
+{
+ return nat44_ei_in2out_node_fn_inline (vm, node, frame, 0, 1);
+}
- trace0:
- if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)
- && (b0->flags & VLIB_BUFFER_IS_TRACED)))
- {
- snat_in2out_trace_t *t =
- vlib_add_trace (vm, node, b0, sizeof (*t));
- t->sw_if_index = sw_if_index0;
- t->next_index = next0;
- t->is_hairpinning = is_hairpinning;
- }
+VLIB_NODE_FN (nat44_ei_in2out_slowpath_node)
+(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
+{
+ return nat44_ei_in2out_node_fn_inline (vm, node, frame, 1, 0);
+}
- if (next0 != SNAT_IN2OUT_NEXT_DROP)
- {
+VLIB_NODE_FN (nat44_ei_in2out_output_slowpath_node)
+(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
+{
+ return nat44_ei_in2out_node_fn_inline (vm, node, frame, 1, 1);
+}
- vlib_increment_simple_counter (&sm->counters.fastpath.
- in2out.other, sw_if_index0,
- vm->thread_index, 1);
- }
+VLIB_NODE_FN (nat44_ei_in2out_hairpinning_handoff_ip4_lookup_node)
+(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
+{
+ return nat44_ei_hairpinning_handoff_fn_inline (
+ vm, node, frame,
+ nat44_ei_main.in2out_hairpinning_finish_ip4_lookup_node_fq_index);
+}
- /* verify speculative enqueue, maybe switch current next frame */
- vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
- to_next, n_left_to_next,
- bi0, next0);
- }
+VLIB_NODE_FN (nat44_ei_in2out_hairpinning_handoff_interface_output_node)
+(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
+{
+ return nat44_ei_hairpinning_handoff_fn_inline (
+ vm, node, frame,
+ nat44_ei_main.in2out_hairpinning_finish_interface_output_node_fq_index);
+}
- vlib_put_next_frame (vm, node, next_index, n_left_to_next);
- }
+VLIB_NODE_FN (nat44_ei_in2out_hairpinning_finish_ip4_lookup_node)
+(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
+{
+ return nat44_ei_in2out_hairpinning_finish_inline (vm, node, frame);
+}
- return frame->n_vectors;
+VLIB_NODE_FN (nat44_ei_in2out_hairpinning_finish_interface_output_node)
+(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
+{
+ return nat44_ei_in2out_hairpinning_finish_inline (vm, node, frame);
}
+VLIB_NODE_FN (nat44_ei_hairpinning_handoff_node)
+(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
+{
+ return nat44_ei_hairpinning_handoff_fn_inline (
+ vm, node, frame, nat44_ei_main.hairpinning_fq_index);
+}
-/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (snat_in2out_fast_node) = {
- .name = "nat44-in2out-fast",
+VLIB_REGISTER_NODE (nat44_ei_in2out_node) = {
+ .name = "nat44-ei-in2out",
.vector_size = sizeof (u32),
- .format_trace = format_snat_in2out_fast_trace,
+ .format_trace = format_nat44_ei_in2out_trace,
.type = VLIB_NODE_TYPE_INTERNAL,
+ .n_errors = ARRAY_LEN(nat44_ei_in2out_error_strings),
+ .error_strings = nat44_ei_in2out_error_strings,
+ .runtime_data_bytes = sizeof (nat44_ei_runtime_t),
+ .n_next_nodes = NAT44_EI_IN2OUT_N_NEXT,
+ .next_nodes = {
+ [NAT44_EI_IN2OUT_NEXT_DROP] = "error-drop",
+ [NAT44_EI_IN2OUT_NEXT_LOOKUP] = "ip4-lookup",
+ [NAT44_EI_IN2OUT_NEXT_SLOW_PATH] = "nat44-ei-in2out-slowpath",
+ [NAT44_EI_IN2OUT_NEXT_ICMP_ERROR] = "ip4-icmp-error",
+ [NAT44_EI_IN2OUT_NEXT_HAIRPINNING_HANDOFF] = "nat44-ei-in2out-hairpinning-handoff-ip4-lookup",
+ },
+};
- .n_errors = ARRAY_LEN(snat_in2out_error_strings),
- .error_strings = snat_in2out_error_strings,
+VLIB_REGISTER_NODE (nat44_ei_in2out_output_node) = {
+ .name = "nat44-ei-in2out-output",
+ .vector_size = sizeof (u32),
+ .format_trace = format_nat44_ei_in2out_trace,
+ .type = VLIB_NODE_TYPE_INTERNAL,
+ .n_errors = ARRAY_LEN(nat44_ei_in2out_error_strings),
+ .error_strings = nat44_ei_in2out_error_strings,
+ .runtime_data_bytes = sizeof (nat44_ei_runtime_t),
+ .n_next_nodes = NAT44_EI_IN2OUT_N_NEXT,
+ .next_nodes = {
+ [NAT44_EI_IN2OUT_NEXT_DROP] = "error-drop",
+ [NAT44_EI_IN2OUT_NEXT_LOOKUP] = "interface-output",
+ [NAT44_EI_IN2OUT_NEXT_SLOW_PATH] = "nat44-ei-in2out-output-slowpath",
+ [NAT44_EI_IN2OUT_NEXT_ICMP_ERROR] = "ip4-icmp-error",
+ [NAT44_EI_IN2OUT_NEXT_HAIRPINNING_HANDOFF] = "nat44-ei-in2out-hairpinning-handoff-interface-output",
+ },
+};
- .runtime_data_bytes = sizeof (snat_runtime_t),
+VLIB_REGISTER_NODE (nat44_ei_in2out_slowpath_node) = {
+ .name = "nat44-ei-in2out-slowpath",
+ .vector_size = sizeof (u32),
+ .format_trace = format_nat44_ei_in2out_trace,
+ .type = VLIB_NODE_TYPE_INTERNAL,
+ .n_errors = ARRAY_LEN(nat44_ei_in2out_error_strings),
+ .error_strings = nat44_ei_in2out_error_strings,
+ .runtime_data_bytes = sizeof (nat44_ei_runtime_t),
+ .n_next_nodes = NAT44_EI_IN2OUT_N_NEXT,
+ .next_nodes = {
+ [NAT44_EI_IN2OUT_NEXT_DROP] = "error-drop",
+ [NAT44_EI_IN2OUT_NEXT_LOOKUP] = "ip4-lookup",
+ [NAT44_EI_IN2OUT_NEXT_SLOW_PATH] = "nat44-ei-in2out-slowpath",
+ [NAT44_EI_IN2OUT_NEXT_ICMP_ERROR] = "ip4-icmp-error",
+ [NAT44_EI_IN2OUT_NEXT_HAIRPINNING_HANDOFF] = "nat44-ei-in2out-hairpinning-handoff-ip4-lookup",
+ },
+};
- .n_next_nodes = SNAT_IN2OUT_N_NEXT,
+VLIB_REGISTER_NODE (nat44_ei_in2out_output_slowpath_node) = {
+ .name = "nat44-ei-in2out-output-slowpath",
+ .vector_size = sizeof (u32),
+ .format_trace = format_nat44_ei_in2out_trace,
+ .type = VLIB_NODE_TYPE_INTERNAL,
+ .n_errors = ARRAY_LEN(nat44_ei_in2out_error_strings),
+ .error_strings = nat44_ei_in2out_error_strings,
+ .runtime_data_bytes = sizeof (nat44_ei_runtime_t),
+ .n_next_nodes = NAT44_EI_IN2OUT_N_NEXT,
+ .next_nodes = {
+ [NAT44_EI_IN2OUT_NEXT_DROP] = "error-drop",
+ [NAT44_EI_IN2OUT_NEXT_LOOKUP] = "interface-output",
+ [NAT44_EI_IN2OUT_NEXT_SLOW_PATH] = "nat44-ei-in2out-output-slowpath",
+ [NAT44_EI_IN2OUT_NEXT_ICMP_ERROR] = "ip4-icmp-error",
+ [NAT44_EI_IN2OUT_NEXT_HAIRPINNING_HANDOFF] = "nat44-ei-in2out-hairpinning-handoff-interface-output",
+ },
+};
- /* edit / add dispositions here */
+VLIB_REGISTER_NODE (nat44_ei_in2out_hairpinning_handoff_ip4_lookup_node) = {
+ .name = "nat44-ei-in2out-hairpinning-handoff-ip4-lookup",
+ .vector_size = sizeof (u32),
+ .n_errors = ARRAY_LEN(nat44_ei_hairpinning_handoff_error_strings),
+ .error_strings = nat44_ei_hairpinning_handoff_error_strings,
+ .format_trace = format_nat44_ei_hairpinning_handoff_trace,
+ .n_next_nodes = 1,
+ .next_nodes = {
+ [0] = "error-drop",
+ },
+};
+
+VLIB_REGISTER_NODE (nat44_ei_in2out_hairpinning_handoff_interface_output_node) = {
+ .name = "nat44-ei-in2out-hairpinning-handoff-interface-output",
+ .vector_size = sizeof (u32),
+ .n_errors = ARRAY_LEN(nat44_ei_hairpinning_handoff_error_strings),
+ .error_strings = nat44_ei_hairpinning_handoff_error_strings,
+ .format_trace = format_nat44_ei_hairpinning_handoff_trace,
+ .n_next_nodes = 1,
+ .next_nodes = {
+ [0] = "error-drop",
+ },
+};
+
+VLIB_REGISTER_NODE (nat44_ei_in2out_hairpinning_finish_ip4_lookup_node) = {
+ .name = "nat44-ei-in2out-hairpinning-finish-ip4-lookup",
+ .vector_size = sizeof (u32),
+ .format_trace = format_nat44_ei_in2out_fast_trace,
+ .type = VLIB_NODE_TYPE_INTERNAL,
+ .n_errors = ARRAY_LEN(nat44_ei_in2out_error_strings),
+ .error_strings = nat44_ei_in2out_error_strings,
+ .runtime_data_bytes = sizeof (nat44_ei_runtime_t),
+ .n_next_nodes = NAT44_EI_IN2OUT_HAIRPINNING_FINISH_N_NEXT,
+ .next_nodes = {
+ [NAT44_EI_IN2OUT_HAIRPINNING_FINISH_NEXT_DROP] = "error-drop",
+ [NAT44_EI_IN2OUT_HAIRPINNING_FINISH_NEXT_LOOKUP] = "ip4-lookup",
+ },
+};
+
+VLIB_REGISTER_NODE (nat44_ei_in2out_hairpinning_finish_interface_output_node) = {
+ .name = "nat44-ei-in2out-hairpinning-finish-interface-output",
+ .vector_size = sizeof (u32),
+ .format_trace = format_nat44_ei_in2out_fast_trace,
+ .type = VLIB_NODE_TYPE_INTERNAL,
+ .n_errors = ARRAY_LEN(nat44_ei_in2out_error_strings),
+ .error_strings = nat44_ei_in2out_error_strings,
+ .runtime_data_bytes = sizeof (nat44_ei_runtime_t),
+ .n_next_nodes = NAT44_EI_IN2OUT_HAIRPINNING_FINISH_N_NEXT,
+ .next_nodes = {
+ [NAT44_EI_IN2OUT_HAIRPINNING_FINISH_NEXT_DROP] = "error-drop",
+ [NAT44_EI_IN2OUT_HAIRPINNING_FINISH_NEXT_LOOKUP] = "interface-output",
+ },
+};
+
+VLIB_REGISTER_NODE (nat44_ei_hairpinning_handoff_node) = {
+ .name = "nat44-ei-hairpinning-handoff",
+ .vector_size = sizeof (u32),
+ .n_errors = ARRAY_LEN(nat44_ei_hairpinning_handoff_error_strings),
+ .error_strings = nat44_ei_hairpinning_handoff_error_strings,
+ .format_trace = format_nat44_ei_hairpinning_handoff_trace,
+ .n_next_nodes = 1,
+ .next_nodes = {
+ [0] = "error-drop",
+ },
+};
+
+VLIB_REGISTER_NODE (nat44_ei_hairpinning_node) = {
+ .name = "nat44-ei-hairpinning",
+ .vector_size = sizeof (u32),
+ .type = VLIB_NODE_TYPE_INTERNAL,
+ .format_trace = format_nat44_ei_hairpin_trace,
+ .n_next_nodes = NAT44_EI_HAIRPIN_N_NEXT,
.next_nodes = {
- [SNAT_IN2OUT_NEXT_DROP] = "error-drop",
- [SNAT_IN2OUT_NEXT_LOOKUP] = "ip4-lookup",
- [SNAT_IN2OUT_NEXT_SLOW_PATH] = "nat44-in2out-slowpath",
- [SNAT_IN2OUT_NEXT_ICMP_ERROR] = "ip4-icmp-error",
+ [NAT44_EI_HAIRPIN_NEXT_DROP] = "error-drop",
+ [NAT44_EI_HAIRPIN_NEXT_LOOKUP] = "ip4-lookup",
+ [NAT44_EI_HAIRPIN_NEXT_HANDOFF] = "nat44-ei-hairpinning-handoff",
},
};
-/* *INDENT-ON* */
/*
* fd.io coding-style-patch-verification: ON
Code Review / vpp.git / blobdiff