#include <nat/nat.h>
#include <nat/nat_ipfix_logging.h>
#include <nat/nat_det.h>
+#include <nat/nat_reass.h>
+#include <nat/nat_inlines.h>
#include <vppinfra/hash.h>
#include <vppinfra/error.h>
return s;
}
+typedef struct {
+ u32 sw_if_index;
+ u32 next_index;
+ u8 cached;
+} nat44_in2out_reass_trace_t;
+
+static u8 * format_nat44_in2out_reass_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_in2out_reass_trace_t * t = va_arg (*args, nat44_in2out_reass_trace_t *);
+
+ s = format (s, "NAT44_IN2OUT_REASS: sw_if_index %d, next index %d, status %s",
+ t->sw_if_index, t->next_index,
+ t->cached ? "cached" : "translated");
+
+ return s;
+}
+
vlib_node_registration_t snat_in2out_node;
vlib_node_registration_t snat_in2out_slowpath_node;
vlib_node_registration_t snat_in2out_fast_node;
vlib_node_registration_t snat_in2out_output_worker_handoff_node;
vlib_node_registration_t snat_hairpin_dst_node;
vlib_node_registration_t snat_hairpin_src_node;
-
+vlib_node_registration_t nat44_hairpinning_node;
+vlib_node_registration_t nat44_in2out_reass_node;
+vlib_node_registration_t nat44_ed_in2out_node;
+vlib_node_registration_t nat44_ed_in2out_slowpath_node;
+vlib_node_registration_t nat44_ed_in2out_output_node;
+vlib_node_registration_t nat44_ed_in2out_output_slowpath_node;
+vlib_node_registration_t nat44_ed_hairpin_dst_node;
+vlib_node_registration_t nat44_ed_hairpin_src_node;
+vlib_node_registration_t nat44_ed_hairpinning_node;
#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")
+_(NO_TRANSLATION, "No translation") \
+_(MAX_SESSIONS_EXCEEDED, "Maximum sessions exceeded") \
+_(DROP_FRAGMENT, "Drop fragment") \
+_(MAX_REASS, "Maximum reassemblies exceeded") \
+_(MAX_FRAG, "Maximum fragments per reassembly exceeded")\
+_(FQ_CONGESTED, "Handoff frame queue congested")
typedef enum {
#define _(sym,str) SNAT_IN2OUT_ERROR_##sym,
SNAT_IN2OUT_NEXT_DROP,
SNAT_IN2OUT_NEXT_ICMP_ERROR,
SNAT_IN2OUT_NEXT_SLOW_PATH,
+ SNAT_IN2OUT_NEXT_REASS,
SNAT_IN2OUT_N_NEXT,
} snat_in2out_next_t;
/**
* @brief Check if packet should be translated
*
- * Packets aimed at outside interface and external addresss with active session
+ * Packets aimed at outside interface and external address with active session
* should be translated.
*
* @param sm NAT main
u32 sw_if_index0, ip4_header_t * ip0, u32 proto0,
u32 rx_fib_index0)
{
+ if (sm->out2in_dpo)
+ return 0;
+
fib_node_index_t fei = FIB_NODE_INDEX_INVALID;
+ nat_outside_fib_t *outside_fib;
fib_prefix_t pfx = {
.fp_proto = FIB_PROTOCOL_IP4,
.fp_len = 32,
u32 sw_if_index = fib_entry_get_resolving_interface (fei);
if (sw_if_index == ~0)
{
- fei = fib_table_lookup (sm->outside_fib_index, &pfx);
- if (FIB_NODE_INDEX_INVALID != fei)
- sw_if_index = fib_entry_get_resolving_interface (fei);
+ vec_foreach (outside_fib, sm->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;
+
snat_interface_t *i;
pool_foreach (i, sm->interfaces,
({
/* NAT packet aimed at outside interface */
- if ((i->is_inside == 0) && (sw_if_index == i->sw_if_index))
+ if ((nat_interface_is_outside(i)) && (sw_if_index == i->sw_if_index))
return 0;
}));
}
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 rx_fib_index0, u32 thread_index)
{
udp_header_t * udp0 = ip4_next_header (ip0);
snat_session_key_t key0, sm0;
/* 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 (&sm->per_thread_data[thread_index].out2in, &kv0,
+ &value0))
{
/* or is static mappings */
- if (!snat_static_mapping_match(sm, key0, &sm0, 1, 0))
+ if (!snat_static_mapping_match(sm, key0, &sm0, 1, 0, 0, 0))
return 0;
}
else
return 0;
+ if (sm->forwarding_enabled)
+ return 1;
+
return snat_not_translate_fast(sm, 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)
+{
+ snat_session_key_t key0;
+ clib_bihash_kv_8_8_t kv0, value0;
+ snat_interface_t *i;
+
+ /* src NAT check */
+ key0.addr = ip0->src_address;
+ key0.port = src_port;
+ key0.protocol = proto0;
+ key0.fib_index = ip4_fib_table_get_index_for_sw_if_index (sw_if_index);
+ kv0.key = key0.as_u64;
+
+ if (!clib_bihash_search_8_8 (&sm->per_thread_data[thread_index].out2in, &kv0,
+ &value0))
+ return 1;
+
+ /* dst NAT check */
+ key0.addr = ip0->dst_address;
+ key0.port = dst_port;
+ key0.protocol = proto0;
+ kv0.key = key0.as_u64;
+ if (!clib_bihash_search_8_8 (&sm->per_thread_data[thread_index].in2out, &kv0,
+ &value0))
+ {
+ /* hairpinning */
+ pool_foreach (i, sm->output_feature_interfaces,
+ ({
+ if ((nat_interface_is_inside(i)) && (sw_if_index == i->sw_if_index))
+ return 0;
+ }));
+ return 1;
+ }
+
+ return 0;
+}
+
+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;
+ u64 sess_timeout_time;
+ snat_main_per_thread_data_t *tsm = vec_elt_at_index (sm->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->now >= sess_timeout_time)
+ {
+ s_kv.key = s->out2in.as_u64;
+ if (clib_bihash_add_del_8_8 (&tsm->out2in, &s_kv, 0))
+ nat_log_warn ("out2in key del failed");
+
+ 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 (!snat_is_session_static (s))
+ snat_free_outside_address_and_port (sm->addresses, ctx->thread_index,
+ &s->out2in);
+
+ nat44_delete_session (sm, s, ctx->thread_index);
+ return 1;
+ }
+
+ return 0;
+}
+
static u32 slow_path (snat_main_t *sm, vlib_buffer_t *b0,
ip4_header_t * ip0,
u32 rx_fib_index0,
snat_session_t ** sessionp,
vlib_node_runtime_t * node,
u32 next0,
- u32 thread_index)
+ u32 thread_index,
+ f64 now)
{
snat_user_t *u;
- snat_user_key_t user_key;
snat_session_t *s;
- clib_bihash_kv_8_8_t kv0, value0;
- u32 oldest_per_user_translation_list_index;
- dlist_elt_t * oldest_per_user_translation_list_elt;
- dlist_elt_t * per_user_translation_list_elt;
- dlist_elt_t * per_user_list_head_elt;
- u32 session_index;
+ clib_bihash_kv_8_8_t kv0;
snat_session_key_t key1;
u32 address_index = ~0;
- u32 outside_fib_index;
- uword * p;
- snat_worker_key_t worker_by_out_key;
+ udp_header_t * udp0 = ip4_next_header (ip0);
+ u8 is_sm = 0;
+ 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 = ip0->dst_address.as_u32,
+ },
+ };
+ nat44_is_idle_session_ctx_t ctx0;
- p = hash_get (sm->ip4_main->fib_index_by_table_id, sm->outside_vrf_id);
- if (! p)
+ if (PREDICT_FALSE (maximum_sessions_exceeded(sm, thread_index)))
{
- b0->error = node->errors[SNAT_IN2OUT_ERROR_BAD_OUTSIDE_FIB];
+ b0->error = node->errors[SNAT_IN2OUT_ERROR_MAX_SESSIONS_EXCEEDED];
+ nat_ipfix_logging_max_sessions(sm->max_translations);
+ nat_log_notice ("maximum sessions exceeded");
return SNAT_IN2OUT_NEXT_DROP;
}
- outside_fib_index = p[0];
key1.protocol = key0->protocol;
- user_key.addr = ip0->src_address;
- user_key.fib_index = rx_fib_index0;
- kv0.key = user_key.as_u64;
-
- /* Ever heard of the "user" = src ip4 address before? */
- if (clib_bihash_search_8_8 (&sm->user_hash, &kv0, &value0))
- {
- /* no, make a new one */
- pool_get (sm->per_thread_data[thread_index].users, u);
- memset (u, 0, sizeof (*u));
- u->addr = ip0->src_address;
- u->fib_index = rx_fib_index0;
-
- pool_get (sm->per_thread_data[thread_index].list_pool, per_user_list_head_elt);
-
- u->sessions_per_user_list_head_index = per_user_list_head_elt -
- sm->per_thread_data[thread_index].list_pool;
-
- clib_dlist_init (sm->per_thread_data[thread_index].list_pool,
- u->sessions_per_user_list_head_index);
-
- kv0.value = u - sm->per_thread_data[thread_index].users;
- /* add user */
- clib_bihash_add_del_8_8 (&sm->user_hash, &kv0, 1 /* is_add */);
- }
- else
- {
- u = pool_elt_at_index (sm->per_thread_data[thread_index].users,
- value0.value);
- }
-
- /* Over quota? Recycle the least recently used dynamic translation */
- if (u->nsessions >= sm->max_translations_per_user)
+ /* First try to match static mapping by local address and port */
+ if (snat_static_mapping_match (sm, *key0, &key1, 0, 0, 0, 0))
{
- /* Remove the oldest dynamic translation */
- do {
- oldest_per_user_translation_list_index =
- clib_dlist_remove_head (sm->per_thread_data[thread_index].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 (sm->per_thread_data[thread_index].list_pool,
- u->sessions_per_user_list_head_index,
- oldest_per_user_translation_list_index);
- /* Get the list element */
- oldest_per_user_translation_list_elt =
- pool_elt_at_index (sm->per_thread_data[thread_index].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 (sm->per_thread_data[thread_index].sessions,
- session_index);
- } while (snat_is_session_static (s));
-
- if (snat_is_unk_proto_session (s))
- {
- clib_bihash_kv_16_8_t up_kv;
- snat_unk_proto_ses_key_t key;
-
- /* Remove from lookup tables */
- key.l_addr = s->in2out.addr;
- key.r_addr = s->ext_host_addr;
- key.fib_index = s->in2out.fib_index;
- key.proto = s->in2out.port;
- up_kv.key[0] = key.as_u64[0];
- up_kv.key[1] = key.as_u64[1];
- if (clib_bihash_add_del_16_8 (&sm->in2out_unk_proto, &up_kv, 0))
- clib_warning ("in2out key del failed");
-
- key.l_addr = s->out2in.addr;
- key.fib_index = s->out2in.fib_index;
- up_kv.key[0] = key.as_u64[0];
- up_kv.key[1] = key.as_u64[1];
- if (clib_bihash_add_del_16_8 (&sm->out2in_unk_proto, &up_kv, 0))
- clib_warning ("out2in key del failed");
- }
- else
- {
- /* Remove in2out, out2in keys */
- kv0.key = s->in2out.as_u64;
- if (clib_bihash_add_del_8_8 (&sm->in2out, &kv0, 0 /* is_add */))
- clib_warning ("in2out key delete failed");
- kv0.key = s->out2in.as_u64;
- if (clib_bihash_add_del_8_8 (&sm->out2in, &kv0, 0 /* is_add */))
- clib_warning ("out2in key delete failed");
-
- /* 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);
-
- snat_free_outside_address_and_port
- (sm, &s->out2in, s->outside_address_index);
- }
- s->outside_address_index = ~0;
-
- if (snat_alloc_outside_address_and_port (sm, rx_fib_index0, thread_index,
- &key1, &address_index))
+ /* Try to create dynamic translation */
+ if (snat_alloc_outside_address_and_port (sm->addresses, rx_fib_index0,
+ thread_index, &key1,
+ &address_index,
+ sm->port_per_thread,
+ sm->per_thread_data[thread_index].snat_thread_index))
{
- ASSERT(0);
-
b0->error = node->errors[SNAT_IN2OUT_ERROR_OUT_OF_PORTS];
return SNAT_IN2OUT_NEXT_DROP;
}
- s->outside_address_index = address_index;
}
else
- {
- u8 static_mapping = 1;
-
- /* First try to match static mapping by local address and port */
- if (snat_static_mapping_match (sm, *key0, &key1, 0, 0))
- {
- static_mapping = 0;
- /* Try to create dynamic translation */
- if (snat_alloc_outside_address_and_port (sm, rx_fib_index0,
- thread_index, &key1,
- &address_index))
- {
- b0->error = node->errors[SNAT_IN2OUT_ERROR_OUT_OF_PORTS];
- return SNAT_IN2OUT_NEXT_DROP;
- }
- }
-
- /* Create a new session */
- pool_get (sm->per_thread_data[thread_index].sessions, s);
- memset (s, 0, sizeof (*s));
-
- s->outside_address_index = address_index;
+ is_sm = 1;
- if (static_mapping)
- {
- u->nstaticsessions++;
- s->flags |= SNAT_SESSION_FLAG_STATIC_MAPPING;
- }
- else
- {
- u->nsessions++;
- }
+ u = nat_user_get_or_create (sm, &ip0->src_address, rx_fib_index0,
+ thread_index);
+ if (!u)
+ {
+ nat_log_warn ("create NAT user failed");
+ return SNAT_IN2OUT_NEXT_DROP;
+ }
- /* Create list elts */
- pool_get (sm->per_thread_data[thread_index].list_pool,
- per_user_translation_list_elt);
- clib_dlist_init (sm->per_thread_data[thread_index].list_pool,
- per_user_translation_list_elt -
- sm->per_thread_data[thread_index].list_pool);
-
- per_user_translation_list_elt->value =
- s - sm->per_thread_data[thread_index].sessions;
- s->per_user_index = per_user_translation_list_elt -
- sm->per_thread_data[thread_index].list_pool;
- s->per_user_list_head_index = u->sessions_per_user_list_head_index;
-
- clib_dlist_addtail (sm->per_thread_data[thread_index].list_pool,
- s->per_user_list_head_index,
- per_user_translation_list_elt -
- sm->per_thread_data[thread_index].list_pool);
- }
+ s = nat_session_alloc_or_recycle (sm, u, thread_index);
+ if (!s)
+ {
+ nat44_delete_user_with_no_session (sm, u, thread_index);
+ nat_log_warn ("create NAT session failed");
+ return SNAT_IN2OUT_NEXT_DROP;
+ }
+ if (is_sm)
+ s->flags |= SNAT_SESSION_FLAG_STATIC_MAPPING;
+ user_session_increment (sm, u, is_sm);
+ s->outside_address_index = address_index;
s->in2out = *key0;
s->out2in = key1;
s->out2in.protocol = key0->protocol;
- s->out2in.fib_index = outside_fib_index;
+ s->out2in.fib_index = sm->outside_fib_index;
+ switch (vec_len (sm->outside_fibs))
+ {
+ case 0:
+ s->out2in.fib_index = sm->outside_fib_index;
+ break;
+ case 1:
+ s->out2in.fib_index = sm->outside_fibs[0].fib_index;
+ break;
+ default:
+ 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;
+ }
+ }
+ }
+ break;
+ }
s->ext_host_addr.as_u32 = ip0->dst_address.as_u32;
+ s->ext_host_port = udp0->dst_port;
*sessionp = s;
/* Add to translation hashes */
+ ctx0.now = now;
+ ctx0.thread_index = thread_index;
kv0.key = s->in2out.as_u64;
kv0.value = s - sm->per_thread_data[thread_index].sessions;
- if (clib_bihash_add_del_8_8 (&sm->in2out, &kv0, 1 /* is_add */))
- clib_warning ("in2out key add failed");
+ if (clib_bihash_add_or_overwrite_stale_8_8 (
+ &sm->per_thread_data[thread_index].in2out, &kv0,
+ nat44_i2o_is_idle_session_cb, &ctx0))
+ nat_log_notice ("in2out key add failed");
kv0.key = s->out2in.as_u64;
kv0.value = s - sm->per_thread_data[thread_index].sessions;
- if (clib_bihash_add_del_8_8 (&sm->out2in, &kv0, 1 /* is_add */))
- clib_warning ("out2in key add failed");
-
- /* Add to translated packets worker lookup */
- worker_by_out_key.addr = s->out2in.addr;
- worker_by_out_key.port = s->out2in.port;
- worker_by_out_key.fib_index = s->out2in.fib_index;
- kv0.key = worker_by_out_key.as_u64;
- kv0.value = thread_index;
- clib_bihash_add_del_8_8 (&sm->worker_by_out, &kv0, 1);
+ if (clib_bihash_add_or_overwrite_stale_8_8 (
+ &sm->per_thread_data[thread_index].out2in, &kv0,
+ nat44_o2i_is_idle_session_cb, &ctx0))
+ nat_log_notice ("out2in key add failed");
/* log NAT event */
snat_ipfix_logging_nat44_ses_create(s->in2out.addr.as_u32,
* @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, u8 *p_proto,
+ u32 thread_index, vlib_buffer_t *b0,
+ ip4_header_t *ip0, u8 *p_proto,
snat_session_key_t *p_value,
u8 *p_dont_translate, void *d, void *e)
{
- ip4_header_t *ip0;
icmp46_header_t *icmp0;
u32 sw_if_index0;
u32 rx_fib_index0;
clib_bihash_kv_8_8_t kv0, value0;
u32 next0 = ~0;
int err;
- u32 iph_offset0 = 0;
- if (PREDICT_FALSE(vnet_buffer(b0)->sw_if_index[VLIB_TX] != ~0))
- {
- iph_offset0 = vnet_buffer (b0)->ip.save_rewrite_length;
- }
- ip0 = (ip4_header_t *) ((u8 *) vlib_buffer_get_current (b0) + iph_offset0);
icmp0 = (icmp46_header_t *) ip4_next_header (ip0);
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);
kv0.key = key0.as_u64;
- if (clib_bihash_search_8_8 (&sm->in2out, &kv0, &value0))
+ if (clib_bihash_search_8_8 (&sm->per_thread_data[thread_index].in2out, &kv0,
+ &value0))
{
- if (PREDICT_FALSE(snat_not_translate(sm, node, sw_if_index0, ip0,
- IP_PROTOCOL_ICMP, rx_fib_index0) &&
- vnet_buffer(b0)->sw_if_index[VLIB_TX] == ~0))
+ if (vnet_buffer(b0)->sw_if_index[VLIB_TX] != ~0)
{
- dont_translate = 1;
- goto out;
+ if (PREDICT_FALSE(nat_not_translate_output_feature(sm, ip0,
+ key0.protocol, key0.port, key0.port, thread_index, sw_if_index0)))
+ {
+ dont_translate = 1;
+ goto out;
+ }
+ }
+ else
+ {
+ if (PREDICT_FALSE(snat_not_translate(sm, node, sw_if_index0,
+ ip0, SNAT_PROTOCOL_ICMP, rx_fib_index0, thread_index)))
+ {
+ dont_translate = 1;
+ goto out;
+ }
}
if (PREDICT_FALSE(icmp_is_error_message (icmp0)))
goto out;
}
- next0 = slow_path (sm, b0, ip0, rx_fib_index0, &key0,
- &s0, node, next0, thread_index);
+ next0 = slow_path (sm, b0, ip0, rx_fib_index0, &key0, &s0, node, next0,
+ thread_index, vlib_time_now (sm->vlib_main));
if (PREDICT_FALSE (next0 == SNAT_IN2OUT_NEXT_DROP))
goto out;
* @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, u8 *p_proto,
+ u32 thread_index, vlib_buffer_t *b0,
+ ip4_header_t *ip0, u8 *p_proto,
snat_session_key_t *p_value,
u8 *p_dont_translate, void *d, void *e)
{
- ip4_header_t *ip0;
icmp46_header_t *icmp0;
u32 sw_if_index0;
u32 rx_fib_index0;
u32 next0 = ~0;
int err;
- ip0 = vlib_buffer_get_current (b0);
icmp0 = (icmp46_header_t *) ip4_next_header (ip0);
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);
}
key0.fib_index = rx_fib_index0;
- if (snat_static_mapping_match(sm, key0, &sm0, 0, &is_addr_only))
+ if (snat_static_mapping_match(sm, key0, &sm0, 0, &is_addr_only, 0, 0))
{
if (PREDICT_FALSE(snat_not_translate_fast(sm, node, sw_if_index0, ip0,
IP_PROTOCOL_ICMP, rx_fib_index0)))
echo0 = (icmp_echo_header_t *)(icmp0+1);
- next0_tmp = sm->icmp_match_in2out_cb(sm, node, thread_index, b0,
+ next0_tmp = sm->icmp_match_in2out_cb(sm, node, thread_index, b0, ip0,
&protocol, &sm0, &dont_translate, d, e);
if (next0_tmp != ~0)
next0 = next0_tmp;
src_address /* changed member */);
ip0->checksum = ip_csum_fold (sum0);
+ if (icmp0->checksum == 0)
+ icmp0->checksum = 0xffff;
+
if (!icmp_is_error_message (icmp0))
{
new_id0 = sm0.port;
* @param tcp0 TCP header.
* @param proto0 NAT protocol.
*/
-static inline void
+static inline int
snat_hairpinning (snat_main_t *sm,
vlib_buffer_t * b0,
ip4_header_t * ip0,
udp_header_t * udp0,
tcp_header_t * tcp0,
- u32 proto0)
+ u32 proto0,
+ int is_ed)
{
snat_session_key_t key0, sm0;
- snat_worker_key_t k0;
snat_session_t * s0;
clib_bihash_kv_8_8_t kv0, value0;
ip_csum_t sum0;
u32 new_dst_addr0 = 0, old_dst_addr0, ti = 0, si;
u16 new_dst_port0, old_dst_port0;
+ int rv;
key0.addr = ip0->dst_address;
key0.port = udp0->dst_port;
key0.fib_index = sm->outside_fib_index;
kv0.key = key0.as_u64;
- /* Check if destination is in active sessions */
- if (clib_bihash_search_8_8 (&sm->out2in, &kv0, &value0))
+ /* Check if destination is static mappings */
+ if (!snat_static_mapping_match(sm, key0, &sm0, 1, 0, 0, 0))
{
- /* or static mappings */
- if (!snat_static_mapping_match(sm, key0, &sm0, 1, 0))
- {
- new_dst_addr0 = sm0.addr.as_u32;
- new_dst_port0 = sm0.port;
- vnet_buffer(b0)->sw_if_index[VLIB_TX] = sm0.fib_index;
- }
+ 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
{
- si = value0.value;
if (sm->num_workers > 1)
+ ti = (clib_net_to_host_u16 (udp0->dst_port) - 1024) / sm->port_per_thread;
+ else
+ ti = sm->num_workers;
+
+ if (is_ed)
{
- k0.addr = ip0->dst_address;
- k0.port = udp0->dst_port;
- k0.fib_index = sm->outside_fib_index;
- kv0.key = k0.as_u64;
- if (clib_bihash_search_8_8 (&sm->worker_by_out, &kv0, &value0))
- ASSERT(0);
- else
- ti = value0.value;
+ clib_bihash_kv_16_8_t ed_kv, ed_value;
+ make_ed_kv (&ed_kv, &ip0->dst_address, &ip0->src_address,
+ ip0->protocol, sm->outside_fib_index, udp0->dst_port,
+ udp0->src_port);
+ rv = clib_bihash_search_16_8 (&sm->per_thread_data[ti].out2in_ed,
+ &ed_kv, &ed_value);
+ si = ed_value.value;
}
else
- ti = sm->num_workers;
+ {
+ rv = clib_bihash_search_8_8 (&sm->per_thread_data[ti].out2in, &kv0,
+ &value0);
+ si = value0.value;
+ }
+ if (rv)
+ return 0;
s0 = pool_elt_at_index (sm->per_thread_data[ti].sessions, si);
new_dst_addr0 = s0->in2out.addr.as_u32;
tcp0->checksum = ip_csum_fold(sum0);
}
}
+ return 1;
}
+ return 0;
}
static inline void
snat_icmp_hairpinning (snat_main_t *sm,
vlib_buffer_t * b0,
ip4_header_t * ip0,
- icmp46_header_t * icmp0)
+ icmp46_header_t * icmp0,
+ int is_ed)
{
snat_session_key_t key0, sm0;
clib_bihash_kv_8_8_t kv0, value0;
- snat_worker_key_t k0;
u32 new_dst_addr0 = 0, old_dst_addr0, si, ti = 0;
ip_csum_t sum0;
snat_session_t *s0;
+ int rv;
if (!icmp_is_error_message (icmp0))
{
key0.fib_index = sm->outside_fib_index;
kv0.key = key0.as_u64;
+ if (sm->num_workers > 1)
+ ti = (clib_net_to_host_u16 (icmp_id0) - 1024) / sm->port_per_thread;
+ else
+ ti = sm->num_workers;
+
/* Check if destination is in active sessions */
- if (clib_bihash_search_8_8 (&sm->out2in, &kv0, &value0))
+ if (is_ed)
+ {
+ clib_bihash_kv_16_8_t ed_kv, ed_value;
+ make_ed_kv (&ed_kv, &ip0->dst_address, &ip0->src_address,
+ IP_PROTOCOL_ICMP, sm->outside_fib_index, icmp_id0, 0);
+ rv = clib_bihash_search_16_8 (&sm->per_thread_data[ti].out2in_ed,
+ &ed_kv, &ed_value);
+ si = ed_value.value;
+ }
+ else
+ {
+ rv = clib_bihash_search_8_8 (&sm->per_thread_data[ti].out2in, &kv0,
+ &value0);
+ si = value0.value;
+ }
+ if (rv)
{
/* or static mappings */
- if (!snat_static_mapping_match(sm, key0, &sm0, 1, 0))
+ if (!snat_static_mapping_match(sm, key0, &sm0, 1, 0, 0, 0))
{
new_dst_addr0 = sm0.addr.as_u32;
vnet_buffer(b0)->sw_if_index[VLIB_TX] = sm0.fib_index;
}
else
{
- si = value0.value;
- if (sm->num_workers > 1)
- {
- k0.addr = ip0->dst_address;
- k0.port = icmp_id0;
- k0.fib_index = sm->outside_fib_index;
- kv0.key = k0.as_u64;
- if (clib_bihash_search_8_8 (&sm->worker_by_out, &kv0, &value0))
- ASSERT(0);
- else
- ti = value0.value;
- }
- else
- ti = sm->num_workers;
-
s0 = pool_elt_at_index (sm->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;
{
/* Hairpinning */
if (vnet_buffer(b0)->sw_if_index[VLIB_TX] == 0)
- snat_icmp_hairpinning(sm, b0, ip0, icmp0);
+ snat_icmp_hairpinning(sm, b0, ip0, icmp0, sm->endpoint_dependent);
/* Accounting */
- s0->last_heard = now;
- s0->total_pkts++;
- s0->total_bytes += vlib_buffer_length_in_chain (sm->vlib_main, b0);
- /* Per-user LRU list maintenance for dynamic translations */
- if (!snat_is_session_static (s0))
- {
- clib_dlist_remove (sm->per_thread_data[thread_index].list_pool,
- s0->per_user_index);
- clib_dlist_addtail (sm->per_thread_data[thread_index].list_pool,
- s0->per_user_list_head_index,
- s0->per_user_index);
- }
+ nat44_session_update_counters (s0, now,
+ vlib_buffer_length_in_chain (sm->vlib_main, b0));
+ /* Per-user LRU list maintenance */
+ nat44_session_update_lru (sm, s0, thread_index);
}
return next0;
}
+
static inline void
-snat_hairpinning_unknown_proto (snat_main_t *sm,
- vlib_buffer_t * b,
- ip4_header_t * ip)
+nat_hairpinning_sm_unknown_proto (snat_main_t * sm,
+ vlib_buffer_t * b,
+ ip4_header_t * ip)
{
- u32 old_addr, new_addr = 0, ti = 0;
clib_bihash_kv_8_8_t kv, value;
- clib_bihash_kv_16_8_t s_kv, s_value;
- snat_unk_proto_ses_key_t key;
- snat_session_key_t m_key;
- snat_worker_key_t w_key;
snat_static_mapping_t *m;
+ u32 old_addr, new_addr;
ip_csum_t sum;
- snat_session_t *s;
- old_addr = ip->dst_address.as_u32;
- key.l_addr.as_u32 = ip->dst_address.as_u32;
- key.r_addr.as_u32 = ip->src_address.as_u32;
- key.fib_index = sm->outside_fib_index;
- key.proto = ip->protocol;
- key.rsvd[0] = key.rsvd[1] = key.rsvd[2] = 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_unk_proto, &s_kv, &s_value))
- {
- m_key.addr = ip->dst_address;
- m_key.fib_index = sm->outside_fib_index;
- m_key.port = 0;
- m_key.protocol = 0;
- kv.key = m_key.as_u64;
- if (clib_bihash_search_8_8 (&sm->static_mapping_by_external, &kv, &value))
- return;
+ make_sm_kv (&kv, &ip->dst_address, 0, 0, 0);
+ if (clib_bihash_search_8_8 (&sm->static_mapping_by_external, &kv, &value))
+ return;
- m = pool_elt_at_index (sm->static_mappings, value.value);
- if (vnet_buffer(b)->sw_if_index[VLIB_TX] == ~0)
- vnet_buffer(b)->sw_if_index[VLIB_TX] = m->fib_index;
- new_addr = ip->dst_address.as_u32 = m->local_addr.as_u32;
- }
- else
- {
- if (sm->num_workers > 1)
- {
- w_key.addr = ip->dst_address;
- w_key.port = 0;
- w_key.fib_index = sm->outside_fib_index;
- kv.key = w_key.as_u64;
- if (clib_bihash_search_8_8 (&sm->worker_by_out, &kv, &value))
- return;
- else
- ti = value.value;
- }
- else
- ti = sm->num_workers;
+ m = pool_elt_at_index (sm->static_mappings, value.value);
- s = pool_elt_at_index (sm->per_thread_data[ti].sessions, s_value.value);
- if (vnet_buffer(b)->sw_if_index[VLIB_TX] == ~0)
- vnet_buffer(b)->sw_if_index[VLIB_TX] = s->in2out.fib_index;
- new_addr = ip->dst_address.as_u32 = s->in2out.addr.as_u32;
- }
+ 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 void
-snat_in2out_unknown_proto (snat_main_t *sm,
- vlib_buffer_t * b,
- ip4_header_t * ip,
- u32 rx_fib_index,
- u32 thread_index,
- f64 now,
- vlib_main_t * vm)
+static int
+nat_in2out_sm_unknown_proto (snat_main_t *sm,
+ vlib_buffer_t * b,
+ ip4_header_t * ip,
+ u32 rx_fib_index)
{
clib_bihash_kv_8_8_t kv, value;
- clib_bihash_kv_16_8_t s_kv, s_value;
snat_static_mapping_t *m;
snat_session_key_t m_key;
- u32 old_addr, new_addr = 0;
+ u32 old_addr, new_addr;
ip_csum_t sum;
- snat_user_key_t u_key;
- snat_user_t *u;
- dlist_elt_t *head, *elt, *oldest;
- snat_main_per_thread_data_t *tsm = &sm->per_thread_data[thread_index];
- u32 elt_index, head_index, ses_index, oldest_index;
- snat_session_t * s;
- snat_unk_proto_ses_key_t key;
- u32 address_index = ~0;
- int i;
- u8 is_sm = 0;
+
+ m_key.addr = ip->src_address;
+ m_key.port = 0;
+ m_key.protocol = 0;
+ m_key.fib_index = rx_fib_index;
+ kv.key = m_key.as_u64;
+ if (clib_bihash_search_8_8 (&sm->static_mapping_by_local, &kv, &value))
+ return 1;
+
+ m = pool_elt_at_index (sm->static_mappings, value.value);
old_addr = ip->src_address.as_u32;
+ new_addr = ip->src_address.as_u32 = m->external_addr.as_u32;
+ sum = ip->checksum;
+ sum = ip_csum_update (sum, old_addr, new_addr, ip4_header_t, src_address);
+ ip->checksum = ip_csum_fold (sum);
- key.l_addr = ip->src_address;
- key.r_addr = ip->dst_address;
- key.fib_index = rx_fib_index;
- key.proto = ip->protocol;
- key.rsvd[0] = key.rsvd[1] = key.rsvd[2] = 0;
- s_kv.key[0] = key.as_u64[0];
- s_kv.key[1] = key.as_u64[1];
- if (!clib_bihash_search_16_8 (&sm->in2out_unk_proto, &s_kv, &s_value))
+ /* Hairpinning */
+ if (vnet_buffer(b)->sw_if_index[VLIB_TX] == ~0)
{
- s = pool_elt_at_index (tsm->sessions, s_value.value);
- new_addr = ip->src_address.as_u32 = s->out2in.addr.as_u32;
+ vnet_buffer(b)->sw_if_index[VLIB_TX] = m->fib_index;
+ nat_hairpinning_sm_unknown_proto (sm, b, ip);
}
- else
- {
- u_key.addr = ip->src_address;
- u_key.fib_index = rx_fib_index;
- kv.key = u_key.as_u64;
- /* Ever heard of the "user" = src ip4 address before? */
- if (clib_bihash_search_8_8 (&sm->user_hash, &kv, &value))
- {
- /* no, make a new one */
- pool_get (tsm->users, u);
- memset (u, 0, sizeof (*u));
- u->addr = ip->src_address;
- u->fib_index = rx_fib_index;
+ return 0;
+}
- pool_get (tsm->list_pool, head);
- u->sessions_per_user_list_head_index = head - tsm->list_pool;
+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)
+{
+ u32 n_left_from, * from, * to_next;
+ snat_in2out_next_t next_index;
+ u32 pkts_processed = 0;
+ snat_main_t * sm = &snat_main;
+ f64 now = vlib_time_now (vm);
+ u32 stats_node_index;
+ u32 thread_index = vm->thread_index;
- clib_dlist_init (tsm->list_pool,
- u->sessions_per_user_list_head_index);
+ stats_node_index = is_slow_path ? snat_in2out_slowpath_node.index :
+ snat_in2out_node.index;
- kv.value = u - tsm->users;
+ from = vlib_frame_vector_args (frame);
+ n_left_from = frame->n_vectors;
+ next_index = node->cached_next_index;
- /* add user */
- clib_bihash_add_del_8_8 (&sm->user_hash, &kv, 1);
- }
- else
- {
- u = pool_elt_at_index (tsm->users, value.value);
- }
+ while (n_left_from > 0)
+ {
+ u32 n_left_to_next;
- m_key.addr = ip->src_address;
- m_key.port = 0;
- m_key.protocol = 0;
- m_key.fib_index = rx_fib_index;
- kv.key = m_key.as_u64;
-
- /* Try to find static mapping first */
- if (!clib_bihash_search_8_8 (&sm->static_mapping_by_local, &kv, &value))
- {
- m = pool_elt_at_index (sm->static_mappings, value.value);
- new_addr = ip->src_address.as_u32 = m->external_addr.as_u32;
- is_sm = 1;
- goto create_ses;
- }
- /* Fallback to 3-tuple key */
- else
- {
- /* Choose same out address as for TCP/UDP session to same destination */
- if (!clib_bihash_search_8_8 (&sm->user_hash, &kv, &value))
- {
- 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_index = elt->next;
- elt = pool_elt_at_index (tsm->list_pool, elt_index);
- ses_index = elt->value;
-
- if (s->ext_host_addr.as_u32 == ip->dst_address.as_u32)
- {
- new_addr = ip->src_address.as_u32 = s->out2in.addr.as_u32;
- address_index = s->outside_address_index;
-
- key.fib_index = sm->outside_fib_index;
- key.l_addr.as_u32 = new_addr;
- s_kv.key[0] = key.as_u64[0];
- s_kv.key[1] = key.as_u64[1];
- if (clib_bihash_search_16_8 (&sm->out2in_unk_proto, &s_kv, &s_value))
- break;
-
- goto create_ses;
- }
- }
- }
- key.fib_index = sm->outside_fib_index;
- for (i = 0; i < vec_len (sm->addresses); i++)
- {
- key.l_addr.as_u32 = sm->addresses[i].addr.as_u32;
- s_kv.key[0] = key.as_u64[0];
- s_kv.key[1] = key.as_u64[1];
- if (clib_bihash_search_16_8 (&sm->out2in_unk_proto, &s_kv, &s_value))
- {
- new_addr = ip->src_address.as_u32 = key.l_addr.as_u32;
- address_index = i;
- goto create_ses;
- }
- }
- return;
- }
-
-create_ses:
- /* Over quota? Recycle the least recently used dynamic translation */
- if (u->nsessions >= sm->max_translations_per_user && !is_sm)
- {
- /* Remove the oldest dynamic translation */
- do {
- oldest_index = clib_dlist_remove_head (
- tsm->list_pool, u->sessions_per_user_list_head_index);
-
- ASSERT (oldest_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_index);
- /* Get the list element */
- oldest = pool_elt_at_index (tsm->list_pool, oldest_index);
-
- /* Get the session index from the list element */
- ses_index = oldest->value;
-
- /* Get the session */
- s = pool_elt_at_index (tsm->sessions, ses_index);
- } while (snat_is_session_static (s));
-
- if (snat_is_unk_proto_session (s))
- {
- /* Remove from lookup tables */
- key.l_addr = s->in2out.addr;
- key.r_addr = s->ext_host_addr;
- key.fib_index = s->in2out.fib_index;
- key.proto = s->in2out.port;
- s_kv.key[0] = key.as_u64[0];
- s_kv.key[1] = key.as_u64[1];
- if (clib_bihash_add_del_16_8 (&sm->in2out_unk_proto, &s_kv, 0))
- clib_warning ("in2out key del failed");
-
- key.l_addr = s->out2in.addr;
- key.fib_index = s->out2in.fib_index;
- s_kv.key[0] = key.as_u64[0];
- s_kv.key[1] = key.as_u64[1];
- if (clib_bihash_add_del_16_8 (&sm->out2in_unk_proto, &s_kv, 0))
- clib_warning ("out2in key del failed");
- }
- else
- {
- /* 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);
-
- snat_free_outside_address_and_port (sm, &s->out2in,
- s->outside_address_index);
-
- /* Remove in2out, out2in keys */
- kv.key = s->in2out.as_u64;
- if (clib_bihash_add_del_8_8 (&sm->in2out, &kv, 0))
- clib_warning ("in2out key del failed");
- kv.key = s->out2in.as_u64;
- if (clib_bihash_add_del_8_8 (&sm->out2in, &kv, 0))
- clib_warning ("out2in key del failed");
- }
- }
- else
- {
- /* Create a new session */
- pool_get (tsm->sessions, s);
- memset (s, 0, sizeof (*s));
-
- /* Create list elts */
- pool_get (tsm->list_pool, elt);
- clib_dlist_init (tsm->list_pool, elt - tsm->list_pool);
- elt->value = s - tsm->sessions;
- s->per_user_index = 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,
- s->per_user_index);
- }
-
- s->ext_host_addr.as_u32 = ip->dst_address.as_u32;
- s->flags |= SNAT_SESSION_FLAG_UNKNOWN_PROTO;
- s->outside_address_index = address_index;
- s->out2in.addr.as_u32 = new_addr;
- s->out2in.fib_index = sm->outside_fib_index;
- s->in2out.addr.as_u32 = old_addr;
- s->in2out.fib_index = rx_fib_index;
- s->in2out.port = s->out2in.port = ip->protocol;
- if (is_sm)
- {
- u->nstaticsessions++;
- s->flags |= SNAT_SESSION_FLAG_STATIC_MAPPING;
- }
- else
- {
- u->nsessions++;
- }
-
- /* Add to lookup tables */
- key.l_addr.as_u32 = old_addr;
- key.r_addr = ip->dst_address;
- key.proto = ip->protocol;
- key.fib_index = rx_fib_index;
- s_kv.key[0] = key.as_u64[0];
- s_kv.key[1] = key.as_u64[1];
- s_kv.value = s - tsm->sessions;
- if (clib_bihash_add_del_16_8 (&sm->in2out_unk_proto, &s_kv, 1))
- clib_warning ("in2out key add failed");
-
- key.l_addr.as_u32 = new_addr;
- key.fib_index = sm->outside_fib_index;
- s_kv.key[0] = key.as_u64[0];
- s_kv.key[1] = key.as_u64[1];
- if (clib_bihash_add_del_16_8 (&sm->out2in_unk_proto, &s_kv, 1))
- clib_warning ("out2in key add failed");
- }
-
- /* Update IP checksum */
- sum = ip->checksum;
- sum = ip_csum_update (sum, old_addr, new_addr, ip4_header_t, src_address);
- ip->checksum = ip_csum_fold (sum);
-
- /* Accounting */
- s->last_heard = now;
- s->total_pkts++;
- s->total_bytes += vlib_buffer_length_in_chain (vm, b);
- /* Per-user LRU list maintenance */
- clib_dlist_remove (tsm->list_pool, s->per_user_index);
- clib_dlist_addtail (tsm->list_pool, s->per_user_list_head_index,
- s->per_user_index);
-
- /* Hairpinning */
- if (vnet_buffer(b)->sw_if_index[VLIB_TX] == ~0)
- snat_hairpinning_unknown_proto(sm, b, ip);
-
- if (vnet_buffer(b)->sw_if_index[VLIB_TX] == ~0)
- vnet_buffer(b)->sw_if_index[VLIB_TX] = sm->outside_fib_index;
-}
-
-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)
-{
- u32 n_left_from, * from, * to_next;
- snat_in2out_next_t next_index;
- u32 pkts_processed = 0;
- snat_main_t * sm = &snat_main;
- f64 now = vlib_time_now (vm);
- u32 stats_node_index;
- u32 thread_index = vlib_get_thread_index ();
-
- stats_node_index = is_slow_path ? snat_in2out_slowpath_node.index :
- snat_in2out_node.index;
-
- 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);
+ vlib_get_next_frame (vm, node, next_index,
+ to_next, n_left_to_next);
while (n_left_from >= 4 && n_left_to_next >= 2)
{
{
if (PREDICT_FALSE (proto0 == ~0))
{
- snat_in2out_unknown_proto (sm, b0, ip0, rx_fib_index0,
- thread_index, now, vm);
+ if (nat_in2out_sm_unknown_proto (sm, b0, ip0, rx_fib_index0))
+ {
+ next0 = SNAT_IN2OUT_NEXT_DROP;
+ b0->error = node->errors[SNAT_IN2OUT_ERROR_UNSUPPORTED_PROTOCOL];
+ }
goto trace00;
}
next0 = SNAT_IN2OUT_NEXT_SLOW_PATH;
goto trace00;
}
+
+ if (ip4_is_fragment (ip0))
+ {
+ next0 = SNAT_IN2OUT_NEXT_REASS;
+ goto trace00;
+ }
}
key0.addr = ip0->src_address;
kv0.key = key0.as_u64;
- if (PREDICT_FALSE (clib_bihash_search_8_8 (&sm->in2out, &kv0, &value0) != 0))
+ if (PREDICT_FALSE (clib_bihash_search_8_8 (
+ &sm->per_thread_data[thread_index].in2out, &kv0, &value0) != 0))
{
if (is_slow_path)
{
- if (PREDICT_FALSE(snat_not_translate(sm, node, sw_if_index0,
- ip0, proto0, rx_fib_index0)) && !is_output_feature)
- goto trace00;
+ if (is_output_feature)
+ {
+ if (PREDICT_FALSE(nat_not_translate_output_feature(sm,
+ ip0, proto0, udp0->src_port, udp0->dst_port, thread_index, sw_if_index0)))
+ goto trace00;
+ }
+ else
+ {
+ if (PREDICT_FALSE(snat_not_translate(sm, node, sw_if_index0,
+ ip0, proto0, rx_fib_index0, thread_index)))
+ goto trace00;
+ }
next0 = slow_path (sm, b0, ip0, rx_fib_index0, &key0,
- &s0, node, next0, thread_index);
+ &s0, node, next0, thread_index, now);
if (PREDICT_FALSE (next0 == SNAT_IN2OUT_NEXT_DROP))
goto trace00;
}
s0 = pool_elt_at_index (sm->per_thread_data[thread_index].sessions,
value0.value);
+ b0->flags |= VNET_BUFFER_F_IS_NATED;
+
old_addr0 = ip0->src_address.as_u32;
ip0->src_address = s0->out2in.addr;
new_addr0 = ip0->src_address.as_u32;
udp0->checksum = 0;
}
- /* Hairpinning */
- if (!is_output_feature)
- snat_hairpinning (sm, b0, ip0, udp0, tcp0, proto0);
-
/* Accounting */
- s0->last_heard = now;
- s0->total_pkts++;
- s0->total_bytes += vlib_buffer_length_in_chain (vm, b0);
- /* Per-user LRU list maintenance for dynamic translation */
- if (!snat_is_session_static (s0))
- {
- clib_dlist_remove (sm->per_thread_data[thread_index].list_pool,
- s0->per_user_index);
- clib_dlist_addtail (sm->per_thread_data[thread_index].list_pool,
- s0->per_user_list_head_index,
- s0->per_user_index);
- }
+ nat44_session_update_counters (s0, now,
+ vlib_buffer_length_in_chain (vm, b0));
+ /* Per-user LRU list maintenance */
+ nat44_session_update_lru (sm, s0, thread_index);
trace00:
if (PREDICT_FALSE((node->flags & VLIB_NODE_FLAG_TRACE)
{
if (PREDICT_FALSE (proto1 == ~0))
{
- snat_in2out_unknown_proto (sm, b1, ip1, rx_fib_index1,
- thread_index, now, vm);
+ if (nat_in2out_sm_unknown_proto (sm, b1, ip1, rx_fib_index1))
+ {
+ next1 = SNAT_IN2OUT_NEXT_DROP;
+ b1->error = node->errors[SNAT_IN2OUT_ERROR_UNSUPPORTED_PROTOCOL];
+ }
goto trace01;
}
next1 = SNAT_IN2OUT_NEXT_SLOW_PATH;
goto trace01;
}
+
+ if (ip4_is_fragment (ip1))
+ {
+ next1 = SNAT_IN2OUT_NEXT_REASS;
+ goto trace01;
+ }
}
key1.addr = ip1->src_address;
key1.protocol = proto1;
key1.fib_index = rx_fib_index1;
- kv1.key = key1.as_u64;
+ kv1.key = key1.as_u64;
+
+ if (PREDICT_FALSE(clib_bihash_search_8_8 (
+ &sm->per_thread_data[thread_index].in2out, &kv1, &value1) != 0))
+ {
+ if (is_slow_path)
+ {
+ if (is_output_feature)
+ {
+ if (PREDICT_FALSE(nat_not_translate_output_feature(sm,
+ ip1, proto1, udp1->src_port, udp1->dst_port, thread_index, sw_if_index1)))
+ goto trace01;
+ }
+ else
+ {
+ if (PREDICT_FALSE(snat_not_translate(sm, node, sw_if_index1,
+ ip1, proto1, rx_fib_index1, thread_index)))
+ goto trace01;
+ }
+
+ next1 = slow_path (sm, b1, ip1, rx_fib_index1, &key1,
+ &s1, node, next1, thread_index, now);
+ if (PREDICT_FALSE (next1 == SNAT_IN2OUT_NEXT_DROP))
+ goto trace01;
+ }
+ else
+ {
+ next1 = SNAT_IN2OUT_NEXT_SLOW_PATH;
+ goto trace01;
+ }
+ }
+ else
+ s1 = pool_elt_at_index (sm->per_thread_data[thread_index].sessions,
+ value1.value);
+
+ b1->flags |= VNET_BUFFER_F_IS_NATED;
+
+ old_addr1 = ip1->src_address.as_u32;
+ ip1->src_address = s1->out2in.addr;
+ new_addr1 = ip1->src_address.as_u32;
+ if (!is_output_feature)
+ vnet_buffer(b1)->sw_if_index[VLIB_TX] = s1->out2in.fib_index;
+
+ sum1 = ip1->checksum;
+ sum1 = ip_csum_update (sum1, old_addr1, new_addr1,
+ ip4_header_t,
+ src_address /* changed member */);
+ ip1->checksum = ip_csum_fold (sum1);
+
+ if (PREDICT_TRUE(proto1 == SNAT_PROTOCOL_TCP))
+ {
+ old_port1 = tcp1->src_port;
+ tcp1->src_port = s1->out2in.port;
+ new_port1 = tcp1->src_port;
+
+ sum1 = tcp1->checksum;
+ sum1 = ip_csum_update (sum1, old_addr1, new_addr1,
+ ip4_header_t,
+ dst_address /* changed member */);
+ sum1 = ip_csum_update (sum1, old_port1, new_port1,
+ ip4_header_t /* cheat */,
+ length /* changed member */);
+ tcp1->checksum = ip_csum_fold(sum1);
+ }
+ else
+ {
+ old_port1 = udp1->src_port;
+ udp1->src_port = s1->out2in.port;
+ udp1->checksum = 0;
+ }
+
+ /* Accounting */
+ nat44_session_update_counters (s1, now,
+ vlib_buffer_length_in_chain (vm, b1));
+ /* Per-user LRU list maintenance */
+ nat44_session_update_lru (sm, 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;
+ t->next_index = next1;
+ t->session_index = ~0;
+ if (s1)
+ t->session_index = s1 - sm->per_thread_data[thread_index].sessions;
+ }
+
+ pkts_processed += next1 != SNAT_IN2OUT_NEXT_DROP;
+
+ /* verify speculative enqueues, maybe switch current next frame */
+ vlib_validate_buffer_enqueue_x2 (vm, node, next_index,
+ to_next, n_left_to_next,
+ bi0, bi1, next0, next1);
+ }
+
+ 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;
+ ip_csum_t sum0;
+ u32 new_addr0, old_addr0;
+ u16 old_port0, new_port0;
+ udp_header_t * udp0;
+ tcp_header_t * tcp0;
+ icmp46_header_t * icmp0;
+ snat_session_key_t key0;
+ u32 rx_fib_index0;
+ u32 proto0;
+ snat_session_t * s0 = 0;
+ clib_bihash_kv_8_8_t kv0, value0;
+ u32 iph_offset0 = 0;
+
+ /* speculatively enqueue b0 to the current next frame */
+ bi0 = from[0];
+ to_next[0] = bi0;
+ from += 1;
+ to_next += 1;
+ n_left_from -= 1;
+ n_left_to_next -= 1;
+
+ b0 = vlib_get_buffer (vm, bi0);
+ next0 = SNAT_IN2OUT_NEXT_LOOKUP;
+
+ if (is_output_feature)
+ iph_offset0 = vnet_buffer (b0)->ip.save_rewrite_length;
+
+ ip0 = (ip4_header_t *) ((u8 *) vlib_buffer_get_current (b0) +
+ iph_offset0);
+
+ 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 = vec_elt (sm->ip4_main->fib_index_by_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_snat_proto (ip0->protocol);
+
+ /* Next configured feature, probably ip4-lookup */
+ if (is_slow_path)
+ {
+ if (PREDICT_FALSE (proto0 == ~0))
+ {
+ if (nat_in2out_sm_unknown_proto (sm, b0, ip0, rx_fib_index0))
+ {
+ next0 = SNAT_IN2OUT_NEXT_DROP;
+ b0->error = node->errors[SNAT_IN2OUT_ERROR_UNSUPPORTED_PROTOCOL];
+ }
+ goto trace0;
+ }
+
+ if (PREDICT_FALSE (proto0 == SNAT_PROTOCOL_ICMP))
+ {
+ next0 = icmp_in2out_slow_path
+ (sm, b0, ip0, icmp0, sw_if_index0, rx_fib_index0, node,
+ next0, now, thread_index, &s0);
+ goto trace0;
+ }
+ }
+ else
+ {
+ if (PREDICT_FALSE (proto0 == ~0 || proto0 == SNAT_PROTOCOL_ICMP))
+ {
+ next0 = SNAT_IN2OUT_NEXT_SLOW_PATH;
+ goto trace0;
+ }
+
+ if (ip4_is_fragment (ip0))
+ {
+ next0 = SNAT_IN2OUT_NEXT_REASS;
+ goto trace0;
+ }
+ }
+
+ key0.addr = ip0->src_address;
+ key0.port = udp0->src_port;
+ key0.protocol = proto0;
+ key0.fib_index = rx_fib_index0;
+
+ kv0.key = key0.as_u64;
+
+ if (clib_bihash_search_8_8 (&sm->per_thread_data[thread_index].in2out,
+ &kv0, &value0))
+ {
+ if (is_slow_path)
+ {
+ if (is_output_feature)
+ {
+ if (PREDICT_FALSE(nat_not_translate_output_feature(sm,
+ ip0, proto0, udp0->src_port, udp0->dst_port, thread_index, sw_if_index0)))
+ goto trace0;
+ }
+ else
+ {
+ if (PREDICT_FALSE(snat_not_translate(sm, node, sw_if_index0,
+ ip0, proto0, rx_fib_index0, thread_index)))
+ goto trace0;
+ }
+
+ next0 = slow_path (sm, b0, ip0, rx_fib_index0, &key0,
+ &s0, node, next0, thread_index, now);
+
+ if (PREDICT_FALSE (next0 == SNAT_IN2OUT_NEXT_DROP))
+ goto trace0;
+ }
+ else
+ {
+ next0 = SNAT_IN2OUT_NEXT_SLOW_PATH;
+ goto trace0;
+ }
+ }
+ else
+ s0 = pool_elt_at_index (sm->per_thread_data[thread_index].sessions,
+ value0.value);
+
+ b0->flags |= VNET_BUFFER_F_IS_NATED;
+
+ old_addr0 = ip0->src_address.as_u32;
+ ip0->src_address = s0->out2in.addr;
+ new_addr0 = ip0->src_address.as_u32;
+ if (!is_output_feature)
+ vnet_buffer(b0)->sw_if_index[VLIB_TX] = s0->out2in.fib_index;
+
+ 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);
+
+ if (PREDICT_TRUE(proto0 == SNAT_PROTOCOL_TCP))
+ {
+ old_port0 = tcp0->src_port;
+ tcp0->src_port = s0->out2in.port;
+ new_port0 = tcp0->src_port;
+
+ 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 */);
+ tcp0->checksum = ip_csum_fold(sum0);
+ }
+ else
+ {
+ old_port0 = udp0->src_port;
+ udp0->src_port = s0->out2in.port;
+ udp0->checksum = 0;
+ }
+
+ /* Accounting */
+ nat44_session_update_counters (s0, now,
+ vlib_buffer_length_in_chain (vm, b0));
+ /* Per-user LRU list maintenance */
+ nat44_session_update_lru (sm, 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));
+ t->is_slow_path = is_slow_path;
+ t->sw_if_index = sw_if_index0;
+ t->next_index = next0;
+ t->session_index = ~0;
+ if (s0)
+ t->session_index = s0 - sm->per_thread_data[thread_index].sessions;
+ }
+
+ pkts_processed += next0 != SNAT_IN2OUT_NEXT_DROP;
+
+ /* verify speculative enqueue, maybe switch current next frame */
+ vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
+ to_next, n_left_to_next,
+ bi0, next0);
+ }
+
+ vlib_put_next_frame (vm, node, next_index, n_left_to_next);
+ }
+
+ vlib_node_increment_counter (vm, stats_node_index,
+ SNAT_IN2OUT_ERROR_IN2OUT_PACKETS,
+ pkts_processed);
+ return frame->n_vectors;
+}
+
+static uword
+snat_in2out_fast_path_fn (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);
+}
+
+VLIB_REGISTER_NODE (snat_in2out_node) = {
+ .function = snat_in2out_fast_path_fn,
+ .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),
+
+ .n_next_nodes = SNAT_IN2OUT_N_NEXT,
+
+ /* 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",
+ [SNAT_IN2OUT_NEXT_REASS] = "nat44-in2out-reass",
+ },
+};
+
+VLIB_NODE_FUNCTION_MULTIARCH (snat_in2out_node, snat_in2out_fast_path_fn);
+
+static uword
+snat_in2out_output_fast_path_fn (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_REGISTER_NODE (snat_in2out_output_node) = {
+ .function = snat_in2out_output_fast_path_fn,
+ .name = "nat44-in2out-output",
+ .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",
+ [SNAT_IN2OUT_NEXT_REASS] = "nat44-in2out-reass",
+ },
+};
+
+VLIB_NODE_FUNCTION_MULTIARCH (snat_in2out_output_node,
+ snat_in2out_output_fast_path_fn);
+
+static uword
+snat_in2out_slow_path_fn (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);
+}
+
+VLIB_REGISTER_NODE (snat_in2out_slowpath_node) = {
+ .function = snat_in2out_slow_path_fn,
+ .name = "nat44-in2out-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] = "ip4-lookup",
+ [SNAT_IN2OUT_NEXT_SLOW_PATH] = "nat44-in2out-slowpath",
+ [SNAT_IN2OUT_NEXT_ICMP_ERROR] = "ip4-icmp-error",
+ [SNAT_IN2OUT_NEXT_REASS] = "nat44-in2out-reass",
+ },
+};
+
+VLIB_NODE_FUNCTION_MULTIARCH (snat_in2out_slowpath_node,
+ snat_in2out_slow_path_fn);
+
+static uword
+snat_in2out_output_slow_path_fn (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);
+}
+
+VLIB_REGISTER_NODE (snat_in2out_output_slowpath_node) = {
+ .function = snat_in2out_output_slow_path_fn,
+ .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",
+ [SNAT_IN2OUT_NEXT_REASS] = "nat44-in2out-reass",
+ },
+};
+
+VLIB_NODE_FUNCTION_MULTIARCH (snat_in2out_output_slowpath_node,
+ snat_in2out_output_slow_path_fn);
+
+extern vnet_feature_arc_registration_t vnet_feat_arc_ip4_local;
+
+static inline uword
+nat44_hairpinning_fn_inline (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * frame,
+ int is_ed)
+{
+ u32 n_left_from, * from, * to_next, stats_node_index;
+ snat_in2out_next_t next_index;
+ u32 pkts_processed = 0;
+ snat_main_t * sm = &snat_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];
+
+ stats_node_index = is_ed ? nat44_ed_hairpinning_node.index :
+ nat44_hairpinning_node.index;
+ 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;
+ ip4_header_t * ip0;
+ u32 proto0;
+ udp_header_t * udp0;
+ tcp_header_t * tcp0;
+
+ /* speculatively enqueue b0 to the current next frame */
+ bi0 = from[0];
+ to_next[0] = bi0;
+ from += 1;
+ to_next += 1;
+ n_left_from -= 1;
+ n_left_to_next -= 1;
+
+ b0 = vlib_get_buffer (vm, bi0);
+ ip0 = vlib_buffer_get_current (b0);
+ udp0 = ip4_next_header (ip0);
+ tcp0 = (tcp_header_t *) udp0;
+
+ proto0 = ip_proto_to_snat_proto (ip0->protocol);
+
+ vnet_get_config_data (&cm->config_main, &b0->current_config_index,
+ &next0, 0);
+
+ if (snat_hairpinning (sm, b0, ip0, udp0, tcp0, proto0, is_ed))
+ next0 = SNAT_IN2OUT_NEXT_LOOKUP;
+
+ pkts_processed += next0 != SNAT_IN2OUT_NEXT_DROP;
+
+ /* verify speculative enqueue, maybe switch current next frame */
+ vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
+ to_next, n_left_to_next,
+ bi0, next0);
+ }
+
+ vlib_put_next_frame (vm, node, next_index, n_left_to_next);
+ }
+
+ vlib_node_increment_counter (vm, stats_node_index,
+ SNAT_IN2OUT_ERROR_IN2OUT_PACKETS,
+ pkts_processed);
+ return frame->n_vectors;
+}
+
+static uword
+nat44_hairpinning_fn (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * frame)
+{
+ return nat44_hairpinning_fn_inline (vm, node, frame, 0);
+}
+
+VLIB_REGISTER_NODE (nat44_hairpinning_node) = {
+ .function = nat44_hairpinning_fn,
+ .name = "nat44-hairpinning",
+ .vector_size = sizeof (u32),
+ .type = VLIB_NODE_TYPE_INTERNAL,
+ .n_errors = ARRAY_LEN(snat_in2out_error_strings),
+ .error_strings = snat_in2out_error_strings,
+ .n_next_nodes = 2,
+ .next_nodes = {
+ [SNAT_IN2OUT_NEXT_DROP] = "error-drop",
+ [SNAT_IN2OUT_NEXT_LOOKUP] = "ip4-lookup",
+ },
+};
+
+VLIB_NODE_FUNCTION_MULTIARCH (nat44_hairpinning_node,
+ nat44_hairpinning_fn);
+
+static uword
+nat44_ed_hairpinning_fn (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * frame)
+{
+ return nat44_hairpinning_fn_inline (vm, node, frame, 1);
+}
+
+VLIB_REGISTER_NODE (nat44_ed_hairpinning_node) = {
+ .function = nat44_ed_hairpinning_fn,
+ .name = "nat44-ed-hairpinning",
+ .vector_size = sizeof (u32),
+ .type = VLIB_NODE_TYPE_INTERNAL,
+ .n_errors = ARRAY_LEN(snat_in2out_error_strings),
+ .error_strings = snat_in2out_error_strings,
+ .n_next_nodes = 2,
+ .next_nodes = {
+ [SNAT_IN2OUT_NEXT_DROP] = "error-drop",
+ [SNAT_IN2OUT_NEXT_LOOKUP] = "ip4-lookup",
+ },
+};
+
+VLIB_NODE_FUNCTION_MULTIARCH (nat44_ed_hairpinning_node,
+ nat44_ed_hairpinning_fn);
+
+static inline void
+nat44_reass_hairpinning (snat_main_t *sm,
+ vlib_buffer_t * b0,
+ ip4_header_t * ip0,
+ u16 sport,
+ u16 dport,
+ u32 proto0)
+{
+ snat_session_key_t key0, sm0;
+ snat_session_t * s0;
+ clib_bihash_kv_8_8_t kv0, value0;
+ ip_csum_t sum0;
+ u32 new_dst_addr0 = 0, old_dst_addr0, ti = 0, si;
+ u16 new_dst_port0, old_dst_port0;
+ udp_header_t * udp0;
+ tcp_header_t * tcp0;
+
+ key0.addr = ip0->dst_address;
+ key0.port = dport;
+ key0.protocol = proto0;
+ key0.fib_index = sm->outside_fib_index;
+ kv0.key = key0.as_u64;
+
+ udp0 = ip4_next_header (ip0);
+
+ /* Check if destination is static mappings */
+ if (!snat_static_mapping_match(sm, key0, &sm0, 1, 0, 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 sessions */
+ else
+ {
+ if (sm->num_workers > 1)
+ ti = (clib_net_to_host_u16 (udp0->dst_port) - 1024) / sm->port_per_thread;
+ else
+ ti = sm->num_workers;
+
+ if (!clib_bihash_search_8_8 (&sm->per_thread_data[ti].out2in, &kv0, &value0))
+ {
+ si = value0.value;
+ s0 = pool_elt_at_index (sm->per_thread_data[ti].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;
+ }
+ }
+
+ /* 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 = dport;
+ if (PREDICT_TRUE(new_dst_port0 != old_dst_port0 &&
+ ip4_is_first_fragment (ip0)))
+ {
+ if (PREDICT_TRUE(proto0 == SNAT_PROTOCOL_TCP))
+ {
+ tcp0 = ip4_next_header (ip0);
+ 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 == SNAT_PROTOCOL_TCP))
+ {
+ tcp0 = ip4_next_header (ip0);
+ 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);
+ }
+ }
+ }
+}
+
+static uword
+nat44_in2out_reass_node_fn (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;
+ u32 pkts_processed = 0;
+ snat_main_t *sm = &snat_main;
+ f64 now = vlib_time_now (vm);
+ u32 thread_index = vm->thread_index;
+ snat_main_per_thread_data_t *per_thread_data =
+ &sm->per_thread_data[thread_index];
+ u32 *fragments_to_drop = 0;
+ u32 *fragments_to_loopback = 0;
+
+ 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, sw_if_index0, proto0, rx_fib_index0, new_addr0, old_addr0;
+ vlib_buffer_t *b0;
+ u32 next0;
+ u8 cached0 = 0;
+ ip4_header_t *ip0;
+ nat_reass_ip4_t *reass0;
+ udp_header_t * udp0;
+ tcp_header_t * tcp0;
+ snat_session_key_t key0;
+ clib_bihash_kv_8_8_t kv0, value0;
+ snat_session_t * s0 = 0;
+ u16 old_port0, new_port0;
+ ip_csum_t sum0;
+
+ /* speculatively enqueue b0 to the current next frame */
+ bi0 = from[0];
+ to_next[0] = bi0;
+ from += 1;
+ to_next += 1;
+ n_left_from -= 1;
+ n_left_to_next -= 1;
+
+ b0 = vlib_get_buffer (vm, bi0);
+ next0 = SNAT_IN2OUT_NEXT_LOOKUP;
+
+ sw_if_index0 = vnet_buffer(b0)->sw_if_index[VLIB_RX];
+ rx_fib_index0 = fib_table_get_index_for_sw_if_index (FIB_PROTOCOL_IP4,
+ sw_if_index0);
+
+ if (PREDICT_FALSE (nat_reass_is_drop_frag(0)))
+ {
+ next0 = SNAT_IN2OUT_NEXT_DROP;
+ b0->error = node->errors[SNAT_IN2OUT_ERROR_DROP_FRAGMENT];
+ goto trace0;
+ }
+
+ ip0 = (ip4_header_t *) vlib_buffer_get_current (b0);
+ udp0 = ip4_next_header (ip0);
+ tcp0 = (tcp_header_t *) udp0;
+ proto0 = ip_proto_to_snat_proto (ip0->protocol);
+
+ reass0 = nat_ip4_reass_find_or_create (ip0->src_address,
+ ip0->dst_address,
+ ip0->fragment_id,
+ ip0->protocol,
+ 1,
+ &fragments_to_drop);
+
+ if (PREDICT_FALSE (!reass0))
+ {
+ next0 = SNAT_IN2OUT_NEXT_DROP;
+ b0->error = node->errors[SNAT_IN2OUT_ERROR_MAX_REASS];
+ nat_log_notice ("maximum reassemblies exceeded");
+ goto trace0;
+ }
+
+ if (PREDICT_FALSE (ip4_is_first_fragment (ip0)))
+ {
+ key0.addr = ip0->src_address;
+ key0.port = udp0->src_port;
+ key0.protocol = proto0;
+ key0.fib_index = rx_fib_index0;
+ kv0.key = key0.as_u64;
+
+ if (clib_bihash_search_8_8 (&per_thread_data->in2out, &kv0, &value0))
+ {
+ if (PREDICT_FALSE(snat_not_translate(sm, node, sw_if_index0,
+ ip0, proto0, rx_fib_index0, thread_index)))
+ goto trace0;
+
+ next0 = slow_path (sm, b0, ip0, rx_fib_index0, &key0,
+ &s0, node, next0, thread_index, now);
+
+ if (PREDICT_FALSE (next0 == SNAT_IN2OUT_NEXT_DROP))
+ goto trace0;
+
+ reass0->sess_index = s0 - per_thread_data->sessions;
+ }
+ else
+ {
+ s0 = pool_elt_at_index (per_thread_data->sessions,
+ value0.value);
+ reass0->sess_index = value0.value;
+ }
+ nat_ip4_reass_get_frags (reass0, &fragments_to_loopback);
+ }
+ else
+ {
+ if (PREDICT_FALSE (reass0->sess_index == (u32) ~0))
+ {
+ if (nat_ip4_reass_add_fragment (reass0, bi0))
+ {
+ b0->error = node->errors[SNAT_IN2OUT_ERROR_MAX_FRAG];
+ nat_log_notice ("maximum fragments per reassembly exceeded");
+ next0 = SNAT_IN2OUT_NEXT_DROP;
+ goto trace0;
+ }
+ cached0 = 1;
+ goto trace0;
+ }
+ s0 = pool_elt_at_index (per_thread_data->sessions,
+ reass0->sess_index);
+ }
+
+ old_addr0 = ip0->src_address.as_u32;
+ ip0->src_address = s0->out2in.addr;
+ new_addr0 = ip0->src_address.as_u32;
+ vnet_buffer(b0)->sw_if_index[VLIB_TX] = s0->out2in.fib_index;
+
+ 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);
+
+ if (PREDICT_FALSE (ip4_is_first_fragment (ip0)))
+ {
+ if (PREDICT_TRUE(proto0 == SNAT_PROTOCOL_TCP))
+ {
+ old_port0 = tcp0->src_port;
+ tcp0->src_port = s0->out2in.port;
+ new_port0 = tcp0->src_port;
+
+ 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 */);
+ tcp0->checksum = ip_csum_fold(sum0);
+ }
+ else
+ {
+ old_port0 = udp0->src_port;
+ udp0->src_port = s0->out2in.port;
+ udp0->checksum = 0;
+ }
+ }
+
+ /* Hairpinning */
+ nat44_reass_hairpinning (sm, b0, ip0, s0->out2in.port,
+ s0->ext_host_port, proto0);
+
+ /* Accounting */
+ nat44_session_update_counters (s0, now,
+ vlib_buffer_length_in_chain (vm, b0));
+ /* Per-user LRU list maintenance */
+ nat44_session_update_lru (sm, s0, thread_index);
+
+ trace0:
+ if (PREDICT_FALSE((node->flags & VLIB_NODE_FLAG_TRACE)
+ && (b0->flags & VLIB_BUFFER_IS_TRACED)))
+ {
+ nat44_in2out_reass_trace_t *t =
+ vlib_add_trace (vm, node, b0, sizeof (*t));
+ t->cached = cached0;
+ t->sw_if_index = sw_if_index0;
+ t->next_index = next0;
+ }
+
+ if (cached0)
+ {
+ n_left_to_next++;
+ to_next--;
+ }
+ else
+ {
+ pkts_processed += next0 != SNAT_IN2OUT_NEXT_DROP;
+
+ /* 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);
+ }
+
+ if (n_left_from == 0 && vec_len (fragments_to_loopback))
+ {
+ from = vlib_frame_vector_args (frame);
+ u32 len = vec_len (fragments_to_loopback);
+ if (len <= VLIB_FRAME_SIZE)
+ {
+ clib_memcpy (from, fragments_to_loopback, sizeof (u32) * len);
+ n_left_from = len;
+ vec_reset_length (fragments_to_loopback);
+ }
+ else
+ {
+ clib_memcpy (from,
+ fragments_to_loopback + (len - VLIB_FRAME_SIZE),
+ sizeof (u32) * VLIB_FRAME_SIZE);
+ n_left_from = VLIB_FRAME_SIZE;
+ _vec_len (fragments_to_loopback) = len - VLIB_FRAME_SIZE;
+ }
+ }
+ }
+
+ vlib_put_next_frame (vm, node, next_index, n_left_to_next);
+ }
+
+ vlib_node_increment_counter (vm, nat44_in2out_reass_node.index,
+ SNAT_IN2OUT_ERROR_IN2OUT_PACKETS,
+ pkts_processed);
+
+ nat_send_all_to_node (vm, fragments_to_drop, node,
+ &node->errors[SNAT_IN2OUT_ERROR_DROP_FRAGMENT],
+ SNAT_IN2OUT_NEXT_DROP);
+
+ vec_free (fragments_to_drop);
+ vec_free (fragments_to_loopback);
+ return frame->n_vectors;
+}
+
+VLIB_REGISTER_NODE (nat44_in2out_reass_node) = {
+ .function = nat44_in2out_reass_node_fn,
+ .name = "nat44-in2out-reass",
+ .vector_size = sizeof (u32),
+ .format_trace = format_nat44_in2out_reass_trace,
+ .type = VLIB_NODE_TYPE_INTERNAL,
+
+ .n_errors = ARRAY_LEN(snat_in2out_error_strings),
+ .error_strings = snat_in2out_error_strings,
+
+ .n_next_nodes = SNAT_IN2OUT_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",
+ [SNAT_IN2OUT_NEXT_REASS] = "nat44-in2out-reass",
+ },
+};
+
+VLIB_NODE_FUNCTION_MULTIARCH (nat44_in2out_reass_node,
+ nat44_in2out_reass_node_fn);
+
+/*******************************/
+/*** endpoint-dependent mode ***/
+/*******************************/
+
+static_always_inline int
+icmp_get_ed_key(ip4_header_t *ip0, nat_ed_ses_key_t *p_key0)
+{
+ icmp46_header_t *icmp0;
+ nat_ed_ses_key_t key0;
+ icmp_echo_header_t *echo0, *inner_echo0 = 0;
+ ip4_header_t *inner_ip0 = 0;
+ void *l4_header = 0;
+ icmp46_header_t *inner_icmp0;
+
+ icmp0 = (icmp46_header_t *) ip4_next_header (ip0);
+ echo0 = (icmp_echo_header_t *)(icmp0+1);
+
+ if (!icmp_is_error_message (icmp0))
+ {
+ key0.proto = IP_PROTOCOL_ICMP;
+ key0.l_addr = ip0->src_address;
+ key0.r_addr = ip0->dst_address;
+ key0.l_port = echo0->identifier;
+ key0.r_port = 0;
+ }
+ else
+ {
+ inner_ip0 = (ip4_header_t *)(echo0+1);
+ l4_header = ip4_next_header (inner_ip0);
+ key0.proto = inner_ip0->protocol;
+ key0.r_addr = inner_ip0->src_address;
+ key0.l_addr = inner_ip0->dst_address;
+ switch (ip_proto_to_snat_proto (inner_ip0->protocol))
+ {
+ case SNAT_PROTOCOL_ICMP:
+ inner_icmp0 = (icmp46_header_t*)l4_header;
+ inner_echo0 = (icmp_echo_header_t *)(inner_icmp0+1);
+ key0.r_port = 0;
+ key0.l_port = inner_echo0->identifier;
+ break;
+ case SNAT_PROTOCOL_UDP:
+ case SNAT_PROTOCOL_TCP:
+ key0.l_port = ((tcp_udp_header_t*)l4_header)->dst_port;
+ key0.r_port = ((tcp_udp_header_t*)l4_header)->src_port;
+ break;
+ default:
+ return SNAT_IN2OUT_ERROR_UNSUPPORTED_PROTOCOL;
+ }
+ }
+ *p_key0 = key0;
+ return 0;
+}
+
+int
+nat44_i2o_ed_is_idle_session_cb (clib_bihash_kv_16_8_t * kv, void * arg)
+{
+ snat_main_t *sm = &snat_main;
+ nat44_is_idle_session_ctx_t *ctx = arg;
+ snat_session_t *s;
+ u64 sess_timeout_time;
+ nat_ed_ses_key_t ed_key;
+ clib_bihash_kv_16_8_t ed_kv;
+ int i;
+ snat_address_t *a;
+ snat_session_key_t key;
+ snat_main_per_thread_data_t *tsm = vec_elt_at_index (sm->per_thread_data,
+ ctx->thread_index);
+
+ s = pool_elt_at_index (tsm->sessions, kv->value);
+ sess_timeout_time = s->last_heard + (f64)nat44_session_get_timeout(sm, s);
+ if (ctx->now >= sess_timeout_time)
+ {
+ if (is_fwd_bypass_session (s))
+ goto delete;
+
+ ed_key.l_addr = s->out2in.addr;
+ ed_key.r_addr = s->ext_host_addr;
+ ed_key.fib_index = s->out2in.fib_index;
+ if (snat_is_unk_proto_session (s))
+ {
+ ed_key.proto = s->in2out.port;
+ ed_key.r_port = 0;
+ ed_key.l_port = 0;
+ }
+ else
+ {
+ ed_key.proto = snat_proto_to_ip_proto (s->in2out.protocol);
+ ed_key.l_port = s->out2in.port;
+ ed_key.r_port = s->ext_host_port;
+ }
+ ed_kv.key[0] = ed_key.as_u64[0];
+ ed_kv.key[1] = ed_key.as_u64[1];
+ if (clib_bihash_add_del_16_8 (&tsm->out2in_ed, &ed_kv, 0))
+ nat_log_warn ("out2in_ed key del failed");
+
+ if (snat_is_unk_proto_session (s))
+ goto delete;
+
+ 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_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,
+ ctx->thread_index, &key);
+ break;
+ }
+ }
+ }
+
+ if (snat_is_session_static (s))
+ goto delete;
+
+ if (s->outside_address_index != ~0)
+ snat_free_outside_address_and_port (sm->addresses, ctx->thread_index,
+ &s->out2in);
+ delete:
+ nat44_delete_session (sm, s, ctx->thread_index);
+ return 1;
+ }
+
+ return 0;
+}
+
+static inline u32
+icmp_in2out_ed_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)
+{
+ next0 = icmp_in2out(sm, b0, ip0, icmp0, sw_if_index0, rx_fib_index0, node,
+ next0, thread_index, p_s0, 0);
+ snat_session_t * s0 = *p_s0;
+ if (PREDICT_TRUE(next0 != SNAT_IN2OUT_NEXT_DROP && s0))
+ {
+ /* Hairpinning */
+ if (vnet_buffer(b0)->sw_if_index[VLIB_TX] == ~0)
+ snat_icmp_hairpinning(sm, b0, ip0, icmp0, sm->endpoint_dependent);
+ /* Accounting */
+ nat44_session_update_counters (s0, now,
+ vlib_buffer_length_in_chain (sm->vlib_main, b0));
+ }
+ return next0;
+}
+
+static u32
+slow_path_ed (snat_main_t *sm,
+ vlib_buffer_t *b,
+ u32 rx_fib_index,
+ clib_bihash_kv_16_8_t *kv,
+ snat_session_t ** sessionp,
+ vlib_node_runtime_t * node,
+ u32 next,
+ u32 thread_index,
+ f64 now)
+{
+ snat_session_t *s;
+ snat_user_t *u;
+ snat_session_key_t key0, key1;
+ u8 lb = 0, is_sm = 0;
+ u32 address_index = ~0;
+ snat_main_per_thread_data_t *tsm = &sm->per_thread_data[thread_index];
+ nat_ed_ses_key_t *key = (nat_ed_ses_key_t *) kv->key;
+ u32 proto = ip_proto_to_snat_proto (key->proto);
+ 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 = key->r_addr.as_u32,
+ },
+ };
+ nat44_is_idle_session_ctx_t ctx;
+
+ if (PREDICT_FALSE (maximum_sessions_exceeded (sm, thread_index)))
+ {
+ b->error = node->errors[SNAT_IN2OUT_ERROR_MAX_SESSIONS_EXCEEDED];
+ nat_ipfix_logging_max_sessions(sm->max_translations);
+ nat_log_notice ("maximum sessions exceeded");
+ return SNAT_IN2OUT_NEXT_DROP;
+ }
+
+ key0.addr = key->l_addr;
+ key0.port = key->l_port;
+ key1.protocol = key0.protocol = proto;
+ key0.fib_index = rx_fib_index;
+ key1.fib_index = sm->outside_fib_index;
+ /* First try to match static mapping by local address and port */
+ if (snat_static_mapping_match (sm, key0, &key1, 0, 0, 0, &lb))
+ {
+ /* Try to create dynamic translation */
+ if (snat_alloc_outside_address_and_port (sm->addresses, rx_fib_index,
+ thread_index, &key1,
+ &address_index,
+ sm->port_per_thread,
+ tsm->snat_thread_index))
+ {
+ nat_log_notice ("addresses exhausted");
+ b->error = node->errors[SNAT_IN2OUT_ERROR_OUT_OF_PORTS];
+ return SNAT_IN2OUT_NEXT_DROP;
+ }
+ }
+ else
+ is_sm = 1;
+
+ u = nat_user_get_or_create (sm, &key->l_addr, rx_fib_index, thread_index);
+ if (!u)
+ {
+ nat_log_warn ("create NAT user failed");
+ if (!is_sm)
+ snat_free_outside_address_and_port (sm->addresses,
+ thread_index, &key1);
+ return SNAT_IN2OUT_NEXT_DROP;
+ }
+
+ s = nat_ed_session_alloc (sm, u, thread_index);
+ if (!s)
+ {
+ nat44_delete_user_with_no_session (sm, u, thread_index);
+ nat_log_warn ("create NAT session failed");
+ if (!is_sm)
+ snat_free_outside_address_and_port (sm->addresses,
+ thread_index, &key1);
+ return SNAT_IN2OUT_NEXT_DROP;
+ }
+
+ user_session_increment (sm, u, is_sm);
+ if (is_sm)
+ s->flags |= SNAT_SESSION_FLAG_STATIC_MAPPING;
+ if (lb)
+ s->flags |= SNAT_SESSION_FLAG_LOAD_BALANCING;
+ s->flags |= SNAT_SESSION_FLAG_ENDPOINT_DEPENDENT;
+ s->outside_address_index = address_index;
+ s->ext_host_addr = key->r_addr;
+ s->ext_host_port = key->r_port;
+ s->in2out = key0;
+ s->out2in = key1;
+ s->out2in.protocol = key0.protocol;
+
+ switch (vec_len (sm->outside_fibs))
+ {
+ case 0:
+ s->out2in.fib_index = sm->outside_fib_index;
+ break;
+ case 1:
+ s->out2in.fib_index = sm->outside_fibs[0].fib_index;
+ break;
+ default:
+ 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;
+ }
+ }
+ }
+ break;
+ }
+
+ /* Add to lookup tables */
+ kv->value = s - tsm->sessions;
+ ctx.now = now;
+ ctx.thread_index = thread_index;
+ if (clib_bihash_add_or_overwrite_stale_16_8 (&tsm->in2out_ed, kv,
+ nat44_i2o_ed_is_idle_session_cb,
+ &ctx))
+ nat_log_notice ("in2out-ed key add failed");
+
+ make_ed_kv (kv, &key1.addr, &key->r_addr, key->proto, s->out2in.fib_index,
+ key1.port, key->r_port);
+ kv->value = s - tsm->sessions;
+ if (clib_bihash_add_or_overwrite_stale_16_8 (&tsm->out2in_ed, kv,
+ nat44_o2i_ed_is_idle_session_cb,
+ &ctx))
+ nat_log_notice ("out2in-ed key add failed");
+
+ *sessionp = s;
+
+ /* log NAT event */
+ snat_ipfix_logging_nat44_ses_create(s->in2out.addr.as_u32,
+ s->out2in.addr.as_u32,
+ s->in2out.protocol,
+ s->in2out.port,
+ s->out2in.port,
+ s->in2out.fib_index);
+ return next;
+}
+
+static_always_inline int
+nat44_ed_not_translate (snat_main_t * sm, vlib_node_runtime_t *node,
+ u32 sw_if_index, ip4_header_t * ip, u32 proto,
+ u32 rx_fib_index, u32 thread_index)
+{
+ udp_header_t *udp = ip4_next_header (ip);
+ snat_main_per_thread_data_t *tsm = &sm->per_thread_data[thread_index];
+ clib_bihash_kv_16_8_t kv, value;
+ snat_session_key_t key0, key1;
+
+ make_ed_kv (&kv, &ip->dst_address, &ip->src_address, ip->protocol,
+ sm->outside_fib_index, udp->dst_port, udp->src_port);
+
+ /* NAT packet aimed at external address if */
+ /* has active sessions */
+ if (clib_bihash_search_16_8 (&tsm->out2in_ed, &kv, &value))
+ {
+ key0.addr = ip->dst_address;
+ key0.port = udp->dst_port;
+ key0.protocol = proto;
+ key0.fib_index = sm->outside_fib_index;
+ /* or is static mappings */
+ if (!snat_static_mapping_match(sm, key0, &key1, 1, 0, 0, 0))
+ return 0;
+ }
+ else
+ return 0;
+
+ if (sm->forwarding_enabled)
+ return 1;
+
+ return snat_not_translate_fast(sm, node, sw_if_index, ip, proto, rx_fib_index);
+}
+
+static_always_inline int
+nat_not_translate_output_feature_fwd (snat_main_t * sm, ip4_header_t * ip,
+ u32 thread_index, f64 now,
+ vlib_main_t * vm, vlib_buffer_t * b)
+{
+ nat_ed_ses_key_t key;
+ clib_bihash_kv_16_8_t kv, value;
+ udp_header_t *udp;
+ snat_session_t *s = 0;
+ snat_main_per_thread_data_t *tsm = &sm->per_thread_data[thread_index];
+
+ if (!sm->forwarding_enabled)
+ return 0;
+
+ if (ip->protocol == IP_PROTOCOL_ICMP)
+ {
+ key.as_u64[0] = key.as_u64[1] = 0;
+ if (icmp_get_ed_key (ip, &key))
+ return 0;
+ key.fib_index = 0;
+ kv.key[0] = key.as_u64[0];
+ kv.key[1] = key.as_u64[1];
+ }
+ else if (ip->protocol == IP_PROTOCOL_UDP || ip->protocol == IP_PROTOCOL_TCP)
+ {
+ udp = ip4_next_header(ip);
+ make_ed_kv (&kv, &ip->src_address, &ip->dst_address, ip->protocol, 0,
+ udp->src_port, udp->dst_port);
+ }
+ else
+ {
+ make_ed_kv (&kv, &ip->src_address, &ip->dst_address, ip->protocol, 0, 0,
+ 0);
+ }
+
+ if (!clib_bihash_search_16_8 (&tsm->in2out_ed, &kv, &value))
+ {
+ s = pool_elt_at_index (tsm->sessions, value.value);
+ if (is_fwd_bypass_session (s))
+ {
+ if (ip->protocol == IP_PROTOCOL_TCP)
+ {
+ tcp_header_t *tcp = ip4_next_header(ip);
+ if (nat44_set_tcp_session_state_i2o (sm, s, tcp, thread_index))
+ return 1;
+ }
+ /* Accounting */
+ nat44_session_update_counters (s, now,
+ vlib_buffer_length_in_chain (vm, b));
+ return 1;
+ }
+ else
+ return 0;
+ }
+
+ return 0;
+}
+
+static_always_inline int
+nat44_ed_not_translate_output_feature (snat_main_t * sm, ip4_header_t * ip,
+ u8 proto, u16 src_port, u16 dst_port,
+ u32 thread_index, u32 sw_if_index)
+{
+ clib_bihash_kv_16_8_t kv, value;
+ snat_main_per_thread_data_t *tsm = &sm->per_thread_data[thread_index];
+ snat_interface_t *i;
+ snat_session_t *s;
+ u32 fib_index = ip4_fib_table_get_index_for_sw_if_index (sw_if_index);
+
+ /* src NAT check */
+ make_ed_kv (&kv, &ip->src_address, &ip->dst_address, proto, fib_index,
+ src_port, dst_port);
+ if (!clib_bihash_search_16_8 (&tsm->out2in_ed, &kv, &value))
+ return 1;
+
+ /* dst NAT check */
+ make_ed_kv (&kv, &ip->dst_address, &ip->src_address, proto, fib_index,
+ dst_port, src_port);
+ if (!clib_bihash_search_16_8 (&tsm->in2out_ed, &kv, &value))
+ {
+ s = pool_elt_at_index (tsm->sessions, value.value);
+ if (is_fwd_bypass_session (s))
+ return 0;
+
+ /* hairpinning */
+ pool_foreach (i, sm->output_feature_interfaces,
+ ({
+ if ((nat_interface_is_inside(i)) && (sw_if_index == i->sw_if_index))
+ return 0;
+ }));
+ return 1;
+ }
+
+ return 0;
+}
+
+u32
+icmp_match_in2out_ed(snat_main_t *sm, vlib_node_runtime_t *node,
+ u32 thread_index, vlib_buffer_t *b, ip4_header_t *ip,
+ u8 *p_proto, snat_session_key_t *p_value,
+ u8 *p_dont_translate, void *d, void *e)
+{
+ icmp46_header_t *icmp;
+ u32 sw_if_index;
+ u32 rx_fib_index;
+ nat_ed_ses_key_t key;
+ snat_session_t *s = 0;
+ u8 dont_translate = 0;
+ clib_bihash_kv_16_8_t kv, value;
+ u32 next = ~0;
+ int err;
+ snat_main_per_thread_data_t *tsm = &sm->per_thread_data[thread_index];
+
+ icmp = (icmp46_header_t *) ip4_next_header (ip);
+ sw_if_index = vnet_buffer(b)->sw_if_index[VLIB_RX];
+ rx_fib_index = ip4_fib_table_get_index_for_sw_if_index (sw_if_index);
+
+ key.as_u64[0] = key.as_u64[1] = 0;
+ err = icmp_get_ed_key (ip, &key);
+ if (err != 0)
+ {
+ b->error = node->errors[err];
+ next = SNAT_IN2OUT_NEXT_DROP;
+ goto out;
+ }
+ key.fib_index = rx_fib_index;
+
+ kv.key[0] = key.as_u64[0];
+ kv.key[1] = key.as_u64[1];
+
+ if (clib_bihash_search_16_8 (&tsm->in2out_ed, &kv, &value))
+ {
+ if (vnet_buffer(b)->sw_if_index[VLIB_TX] != ~0)
+ {
+ if (PREDICT_FALSE(nat44_ed_not_translate_output_feature(sm, ip,
+ key.proto, key.l_port, key.r_port, thread_index, sw_if_index)))
+ {
+ dont_translate = 1;
+ goto out;
+ }
+ }
+ else
+ {
+ if (PREDICT_FALSE(nat44_ed_not_translate(sm, node, sw_if_index,
+ ip, SNAT_PROTOCOL_ICMP, rx_fib_index, thread_index)))
+ {
+ dont_translate = 1;
+ goto out;
+ }
+ }
+
+ if (PREDICT_FALSE(icmp_is_error_message (icmp)))
+ {
+ b->error = node->errors[SNAT_IN2OUT_ERROR_BAD_ICMP_TYPE];
+ next = SNAT_IN2OUT_NEXT_DROP;
+ goto out;
+ }
+
+ next = slow_path_ed (sm, b, rx_fib_index, &kv, &s, node, next,
+ thread_index, vlib_time_now (sm->vlib_main));
+
+ if (PREDICT_FALSE (next == SNAT_IN2OUT_NEXT_DROP))
+ goto out;
+ }
+ else
+ {
+ if (PREDICT_FALSE(icmp->type != ICMP4_echo_request &&
+ icmp->type != ICMP4_echo_reply &&
+ !icmp_is_error_message (icmp)))
+ {
+ b->error = node->errors[SNAT_IN2OUT_ERROR_BAD_ICMP_TYPE];
+ next = SNAT_IN2OUT_NEXT_DROP;
+ goto out;
+ }
+
+ s = pool_elt_at_index (tsm->sessions, value.value);
+ }
+
+ *p_proto = ip_proto_to_snat_proto (key.proto);
+out:
+ if (s)
+ *p_value = s->out2in;
+ *p_dont_translate = dont_translate;
+ if (d)
+ *(snat_session_t**)d = s;
+ return next;
+}
+
+static inline void
+nat44_ed_hairpinning_unknown_proto (snat_main_t *sm,
+ vlib_buffer_t * b,
+ ip4_header_t * ip)
+{
+ u32 old_addr, new_addr = 0, ti = 0;
+ clib_bihash_kv_8_8_t kv, value;
+ clib_bihash_kv_16_8_t s_kv, s_value;
+ snat_static_mapping_t *m;
+ ip_csum_t sum;
+ snat_session_t *s;
+ snat_main_per_thread_data_t *tsm;
+
+ if (sm->num_workers > 1)
+ ti = sm->worker_out2in_cb (ip, sm->outside_fib_index);
+ else
+ ti = sm->num_workers;
+ tsm = &sm->per_thread_data[ti];
+
+ old_addr = ip->dst_address.as_u32;
+ make_ed_kv (&s_kv, &ip->dst_address, &ip->src_address, ip->protocol,
+ sm->outside_fib_index, 0, 0);
+ if (clib_bihash_search_16_8 (&tsm->out2in_ed, &s_kv, &s_value))
+ {
+ make_sm_kv (&kv, &ip->dst_address, 0, 0, 0);
+ if (clib_bihash_search_8_8 (&sm->static_mapping_by_external, &kv, &value))
+ return;
+
+ m = pool_elt_at_index (sm->static_mappings, value.value);
+ if (vnet_buffer(b)->sw_if_index[VLIB_TX] == ~0)
+ vnet_buffer(b)->sw_if_index[VLIB_TX] = m->fib_index;
+ new_addr = ip->dst_address.as_u32 = m->local_addr.as_u32;
+ }
+ else
+ {
+ s = pool_elt_at_index (sm->per_thread_data[ti].sessions, s_value.value);
+ if (vnet_buffer(b)->sw_if_index[VLIB_TX] == ~0)
+ vnet_buffer(b)->sw_if_index[VLIB_TX] = s->in2out.fib_index;
+ new_addr = ip->dst_address.as_u32 = s->in2out.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);
+}
+
+static snat_session_t *
+nat44_ed_in2out_unknown_proto (snat_main_t *sm,
+ vlib_buffer_t * b,
+ ip4_header_t * ip,
+ u32 rx_fib_index,
+ u32 thread_index,
+ f64 now,
+ vlib_main_t * vm,
+ vlib_node_runtime_t * node)
+{
+ clib_bihash_kv_8_8_t kv, value;
+ clib_bihash_kv_16_8_t s_kv, s_value;
+ snat_static_mapping_t *m;
+ u32 old_addr, new_addr = 0;
+ ip_csum_t sum;
+ snat_user_t *u;
+ dlist_elt_t *head, *elt;
+ snat_main_per_thread_data_t *tsm = &sm->per_thread_data[thread_index];
+ u32 elt_index, head_index, ses_index;
+ snat_session_t * s;
+ u32 address_index = ~0, outside_fib_index = sm->outside_fib_index;
+ int i;
+ u8 is_sm = 0;
+ 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,
+ },
+ };
+
+ switch (vec_len (sm->outside_fibs))
+ {
+ case 0:
+ outside_fib_index = sm->outside_fib_index;
+ break;
+ case 1:
+ outside_fib_index = sm->outside_fibs[0].fib_index;
+ break;
+ default:
+ 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)
+ {
+ outside_fib_index = outside_fib->fib_index;
+ break;
+ }
+ }
+ }
+ break;
+ }
+ old_addr = ip->src_address.as_u32;
+
+ make_ed_kv (&s_kv, &ip->src_address, &ip->dst_address, ip->protocol,
+ rx_fib_index, 0, 0);
+
+ if (!clib_bihash_search_16_8 (&tsm->in2out_ed, &s_kv, &s_value))
+ {
+ s = pool_elt_at_index (tsm->sessions, s_value.value);
+ new_addr = ip->src_address.as_u32 = s->out2in.addr.as_u32;
+ }
+ else
+ {
+ if (PREDICT_FALSE (maximum_sessions_exceeded(sm, thread_index)))
+ {
+ b->error = node->errors[SNAT_IN2OUT_ERROR_MAX_SESSIONS_EXCEEDED];
+ nat_ipfix_logging_max_sessions(sm->max_translations);
+ nat_log_notice ("maximum sessions exceeded");
+ return 0;
+ }
+
+ u = nat_user_get_or_create (sm, &ip->src_address, rx_fib_index,
+ thread_index);
+ if (!u)
+ {
+ nat_log_warn ("create NAT user failed");
+ return 0;
+ }
+
+ make_sm_kv (&kv, &ip->src_address, 0, rx_fib_index, 0);
+
+ /* Try to find static mapping first */
+ if (!clib_bihash_search_8_8 (&sm->static_mapping_by_local, &kv, &value))
+ {
+ m = pool_elt_at_index (sm->static_mappings, value.value);
+ new_addr = ip->src_address.as_u32 = m->external_addr.as_u32;
+ is_sm = 1;
+ goto create_ses;
+ }
+ /* Fallback to 3-tuple key */
+ else
+ {
+ /* Choose same out address as for TCP/UDP session to same destination */
+ head_index = u->sessions_per_user_list_head_index;
+ head = pool_elt_at_index (tsm->list_pool, head_index);
+ elt_index = head->next;
+ if (PREDICT_FALSE (elt_index == ~0))
+ ses_index = ~0;
+ else
+ {
+ 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_index = elt->next;
+ elt = pool_elt_at_index (tsm->list_pool, elt_index);
+ ses_index = elt->value;
+
+ if (s->ext_host_addr.as_u32 == ip->dst_address.as_u32)
+ {
+ new_addr = ip->src_address.as_u32 = s->out2in.addr.as_u32;
+ address_index = s->outside_address_index;
+
+ make_ed_kv (&s_kv, &s->out2in.addr, &ip->dst_address,
+ ip->protocol, outside_fib_index, 0, 0);
+ if (clib_bihash_search_16_8 (&tsm->out2in_ed, &s_kv, &s_value))
+ goto create_ses;
+
+ break;
+ }
+ }
+
+ for (i = 0; i < vec_len (sm->addresses); i++)
+ {
+ make_ed_kv (&s_kv, &sm->addresses[i].addr, &ip->dst_address,
+ ip->protocol, outside_fib_index, 0, 0);
+ if (clib_bihash_search_16_8 (&tsm->out2in_ed, &s_kv, &s_value))
+ {
+ new_addr = ip->src_address.as_u32 =
+ sm->addresses[i].addr.as_u32;
+ address_index = i;
+ goto create_ses;
+ }
+ }
+ return 0;
+ }
+
+create_ses:
+ s = nat_ed_session_alloc (sm, u, thread_index);
+ if (!s)
+ {
+ nat44_delete_user_with_no_session (sm, u, thread_index);
+ nat_log_warn ("create NAT session failed");
+ return 0;
+ }
+
+ s->ext_host_addr.as_u32 = ip->dst_address.as_u32;
+ s->flags |= SNAT_SESSION_FLAG_UNKNOWN_PROTO;
+ s->flags |= SNAT_SESSION_FLAG_ENDPOINT_DEPENDENT;
+ s->outside_address_index = address_index;
+ s->out2in.addr.as_u32 = new_addr;
+ s->out2in.fib_index = outside_fib_index;
+ s->in2out.addr.as_u32 = old_addr;
+ s->in2out.fib_index = rx_fib_index;
+ s->in2out.port = s->out2in.port = ip->protocol;
+ if (is_sm)
+ s->flags |= SNAT_SESSION_FLAG_STATIC_MAPPING;
+ user_session_increment (sm, u, is_sm);
+
+ /* Add to lookup tables */
+ make_ed_kv (&s_kv, &s->in2out.addr, &ip->dst_address, ip->protocol,
+ rx_fib_index, 0, 0);
+ s_kv.value = s - tsm->sessions;
+ if (clib_bihash_add_del_16_8 (&tsm->in2out_ed, &s_kv, 1))
+ nat_log_notice ("in2out key add failed");
+
+ make_ed_kv (&s_kv, &s->out2in.addr, &ip->dst_address, ip->protocol,
+ outside_fib_index, 0, 0);
+ s_kv.value = s - tsm->sessions;
+ if (clib_bihash_add_del_16_8 (&tsm->out2in_ed, &s_kv, 1))
+ nat_log_notice ("out2in key add failed");
+ }
+
+ /* Update IP checksum */
+ sum = ip->checksum;
+ sum = ip_csum_update (sum, old_addr, new_addr, ip4_header_t, src_address);
+ ip->checksum = ip_csum_fold (sum);
+
+ /* Accounting */
+ nat44_session_update_counters (s, now, vlib_buffer_length_in_chain (vm, b));
+
+ /* Hairpinning */
+ if (vnet_buffer(b)->sw_if_index[VLIB_TX] == ~0)
+ nat44_ed_hairpinning_unknown_proto(sm, b, ip);
+
+ if (vnet_buffer(b)->sw_if_index[VLIB_TX] == ~0)
+ vnet_buffer(b)->sw_if_index[VLIB_TX] = outside_fib_index;
+
+ return s;
+}
+
+static inline uword
+nat44_ed_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, *to_next, pkts_processed = 0, stats_node_index;
+ snat_in2out_next_t next_index;
+ snat_main_t *sm = &snat_main;
+ f64 now = vlib_time_now (vm);
+ u32 thread_index = vm->thread_index;
+ snat_main_per_thread_data_t *tsm = &sm->per_thread_data[thread_index];
+
+ stats_node_index = is_slow_path ? nat44_ed_in2out_slowpath_node.index :
+ nat44_ed_in2out_node.index;
+
+ 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 >= 4 && n_left_to_next >= 2)
+ {
+ u32 bi0, bi1;
+ vlib_buffer_t *b0, *b1;
+ u32 next0, sw_if_index0, rx_fib_index0, iph_offset0 = 0, proto0,
+ new_addr0, old_addr0;
+ u32 next1, sw_if_index1, rx_fib_index1, iph_offset1 = 0, proto1,
+ new_addr1, old_addr1;
+ u16 old_port0, new_port0, old_port1, new_port1;
+ ip4_header_t *ip0, *ip1;
+ udp_header_t *udp0, *udp1;
+ tcp_header_t *tcp0, *tcp1;
+ icmp46_header_t *icmp0, *icmp1;
+ snat_session_t *s0 = 0, *s1 = 0;
+ clib_bihash_kv_16_8_t kv0, value0, kv1, value1;
+ ip_csum_t sum0, sum1;
+
+ /* Prefetch next iteration. */
+ {
+ vlib_buffer_t * p2, * p3;
+
+ p2 = vlib_get_buffer (vm, from[2]);
+ p3 = vlib_get_buffer (vm, from[3]);
+
+ vlib_prefetch_buffer_header (p2, LOAD);
+ vlib_prefetch_buffer_header (p3, LOAD);
+
+ CLIB_PREFETCH (p2->data, CLIB_CACHE_LINE_BYTES, STORE);
+ CLIB_PREFETCH (p3->data, CLIB_CACHE_LINE_BYTES, STORE);
+ }
+
+ /* speculatively enqueue b0 and b1 to the current next frame */
+ to_next[0] = bi0 = from[0];
+ to_next[1] = bi1 = from[1];
+ from += 2;
+ to_next += 2;
+ n_left_from -= 2;
+ n_left_to_next -= 2;
+
+ b0 = vlib_get_buffer (vm, bi0);
+ b1 = vlib_get_buffer (vm, bi1);
+
+ next0 = SNAT_IN2OUT_NEXT_LOOKUP;
+
+ if (is_output_feature)
+ iph_offset0 = vnet_buffer (b0)->ip.save_rewrite_length;
+
+ ip0 = (ip4_header_t *) ((u8 *) vlib_buffer_get_current (b0) +
+ iph_offset0);
+
+ sw_if_index0 = vnet_buffer(b0)->sw_if_index[VLIB_RX];
+ rx_fib_index0 = fib_table_get_index_for_sw_if_index (FIB_PROTOCOL_IP4,
+ 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 trace00;
+ }
+
+ udp0 = ip4_next_header (ip0);
+ tcp0 = (tcp_header_t *) udp0;
+ icmp0 = (icmp46_header_t *) udp0;
+ proto0 = ip_proto_to_snat_proto (ip0->protocol);
+
+ if (is_slow_path)
+ {
+ if (PREDICT_FALSE (proto0 == ~0))
+ {
+ s0 = nat44_ed_in2out_unknown_proto (sm, b0, ip0,
+ rx_fib_index0,
+ thread_index, now, vm,
+ node);
+ if (!s0)
+ next0 = SNAT_IN2OUT_NEXT_DROP;
+ goto trace00;
+ }
+
+ if (PREDICT_FALSE (proto0 == SNAT_PROTOCOL_ICMP))
+ {
+ next0 = icmp_in2out_ed_slow_path
+ (sm, b0, ip0, icmp0, sw_if_index0, rx_fib_index0, node,
+ next0, now, thread_index, &s0);
+ goto trace00;
+ }
+ }
+ else
+ {
+ if (is_output_feature)
+ {
+ if (PREDICT_FALSE(nat_not_translate_output_feature_fwd(
+ sm, ip0, thread_index, now, vm, b0)))
+ goto trace00;
+ }
+
+ if (PREDICT_FALSE (proto0 == ~0 || proto0 == SNAT_PROTOCOL_ICMP))
+ {
+ next0 = SNAT_IN2OUT_NEXT_SLOW_PATH;
+ goto trace00;
+ }
+
+ if (ip4_is_fragment (ip0))
+ {
+ b0->error = node->errors[SNAT_IN2OUT_ERROR_DROP_FRAGMENT];
+ next0 = SNAT_IN2OUT_NEXT_DROP;
+ goto trace00;
+ }
+ }
+
+ make_ed_kv (&kv0, &ip0->src_address, &ip0->dst_address, ip0->protocol,
+ rx_fib_index0, udp0->src_port, udp0->dst_port);
+
+ if (clib_bihash_search_16_8 (&tsm->in2out_ed, &kv0, &value0))
+ {
+ if (is_slow_path)
+ {
+ if (is_output_feature)
+ {
+ if (PREDICT_FALSE(nat44_ed_not_translate_output_feature(
+ sm, ip0, ip0->protocol, udp0->src_port,
+ udp0->dst_port, thread_index, sw_if_index0)))
+ goto trace00;
+ }
+ else
+ {
+ if (PREDICT_FALSE(nat44_ed_not_translate(sm, node,
+ sw_if_index0, ip0, proto0, rx_fib_index0,
+ thread_index)))
+ goto trace00;
+ }
+
+ next0 = slow_path_ed (sm, b0, rx_fib_index0, &kv0, &s0, node,
+ next0, thread_index, now);
+
+ if (PREDICT_FALSE (next0 == SNAT_IN2OUT_NEXT_DROP))
+ goto trace00;
+ }
+ else
+ {
+ next0 = SNAT_IN2OUT_NEXT_SLOW_PATH;
+ goto trace00;
+ }
+ }
+ else
+ {
+ s0 = pool_elt_at_index (tsm->sessions, value0.value);
+ }
+
+ b0->flags |= VNET_BUFFER_F_IS_NATED;
+
+ if (!is_output_feature)
+ vnet_buffer(b0)->sw_if_index[VLIB_TX] = s0->out2in.fib_index;
+
+ old_addr0 = ip0->src_address.as_u32;
+ new_addr0 = ip0->src_address.as_u32 = s0->out2in.addr.as_u32;
+ sum0 = ip0->checksum;
+ sum0 = ip_csum_update (sum0, old_addr0, new_addr0, ip4_header_t,
+ src_address);
+ if (PREDICT_FALSE (is_twice_nat_session (s0)))
+ sum0 = ip_csum_update (sum0, ip0->dst_address.as_u32,
+ s0->ext_host_addr.as_u32, ip4_header_t,
+ dst_address);
+ ip0->checksum = ip_csum_fold (sum0);
+
+ if (PREDICT_TRUE (proto0 == SNAT_PROTOCOL_TCP))
+ {
+ old_port0 = tcp0->src_port;
+ new_port0 = tcp0->src_port = s0->out2in.port;
+
+ sum0 = tcp0->checksum;
+ sum0 = ip_csum_update (sum0, old_addr0, new_addr0, ip4_header_t,
+ dst_address);
+ sum0 = ip_csum_update (sum0, old_port0, new_port0, ip4_header_t,
+ length);
+ if (PREDICT_FALSE (is_twice_nat_session (s0)))
+ {
+ sum0 = ip_csum_update (sum0, ip0->dst_address.as_u32,
+ s0->ext_host_addr.as_u32,
+ ip4_header_t, dst_address);
+ sum0 = ip_csum_update (sum0, tcp0->dst_port,
+ s0->ext_host_port, ip4_header_t,
+ length);
+ tcp0->dst_port = s0->ext_host_port;
+ ip0->dst_address.as_u32 = s0->ext_host_addr.as_u32;
+ }
+ tcp0->checksum = ip_csum_fold(sum0);
+ if (nat44_set_tcp_session_state_i2o (sm, s0, tcp0, thread_index))
+ goto trace00;
+ }
+ else
+ {
+ udp0->src_port = s0->out2in.port;
+ udp0->checksum = 0;
+ if (PREDICT_FALSE (is_twice_nat_session (s0)))
+ {
+ udp0->dst_port = s0->ext_host_port;
+ ip0->dst_address.as_u32 = s0->ext_host_addr.as_u32;
+ }
+ }
+
+ /* Accounting */
+ nat44_session_update_counters (s0, now,
+ vlib_buffer_length_in_chain (vm, b0));
+
+ 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));
+ t->is_slow_path = is_slow_path;
+ t->sw_if_index = sw_if_index0;
+ t->next_index = next0;
+ t->session_index = ~0;
+ if (s0)
+ t->session_index = s0 - tsm->sessions;
+ }
+
+ pkts_processed += next0 != SNAT_IN2OUT_NEXT_DROP;
+
+
+ next1 = SNAT_IN2OUT_NEXT_LOOKUP;
+
+ if (is_output_feature)
+ iph_offset1 = vnet_buffer (b1)->ip.save_rewrite_length;
+
+ ip1 = (ip4_header_t *) ((u8 *) vlib_buffer_get_current (b1) +
+ iph_offset1);
+
+ sw_if_index1 = vnet_buffer(b1)->sw_if_index[VLIB_RX];
+ rx_fib_index1 = fib_table_get_index_for_sw_if_index (FIB_PROTOCOL_IP4,
+ sw_if_index1);
+
+ if (PREDICT_FALSE(ip1->ttl == 1))
+ {
+ vnet_buffer (b1)->sw_if_index[VLIB_TX] = (u32) ~ 0;
+ icmp4_error_set_vnet_buffer (b1, ICMP4_time_exceeded,
+ ICMP4_time_exceeded_ttl_exceeded_in_transit,
+ 0);
+ next1 = SNAT_IN2OUT_NEXT_ICMP_ERROR;
+ goto trace01;
+ }
+
+ udp1 = ip4_next_header (ip1);
+ tcp1 = (tcp_header_t *) udp1;
+ icmp1 = (icmp46_header_t *) udp1;
+ proto1 = ip_proto_to_snat_proto (ip1->protocol);
+
+ if (is_slow_path)
+ {
+ if (PREDICT_FALSE (proto1 == ~0))
+ {
+ s1 = nat44_ed_in2out_unknown_proto (sm, b1, ip1,
+ rx_fib_index1,
+ thread_index, now, vm,
+ node);
+ if (!s1)
+ next1 = SNAT_IN2OUT_NEXT_DROP;
+ goto trace01;
+ }
+
+ if (PREDICT_FALSE (proto1 == SNAT_PROTOCOL_ICMP))
+ {
+ next1 = icmp_in2out_ed_slow_path
+ (sm, b1, ip1, icmp1, sw_if_index1, rx_fib_index1, node,
+ next1, now, thread_index, &s1);
+ goto trace01;
+ }
+ }
+ else
+ {
+ if (is_output_feature)
+ {
+ if (PREDICT_FALSE(nat_not_translate_output_feature_fwd(
+ sm, ip1, thread_index, now, vm, b1)))
+ goto trace01;
+ }
+
+ if (PREDICT_FALSE (proto1 == ~0 || proto1 == SNAT_PROTOCOL_ICMP))
+ {
+ next1 = SNAT_IN2OUT_NEXT_SLOW_PATH;
+ goto trace01;
+ }
+
+ if (ip4_is_fragment (ip1))
+ {
+ b1->error = node->errors[SNAT_IN2OUT_ERROR_DROP_FRAGMENT];
+ next1 = SNAT_IN2OUT_NEXT_DROP;
+ goto trace01;
+ }
+ }
+
+ make_ed_kv (&kv1, &ip1->src_address, &ip1->dst_address, ip1->protocol,
+ rx_fib_index1, udp1->src_port, udp1->dst_port);
- if (PREDICT_FALSE(clib_bihash_search_8_8 (&sm->in2out, &kv1, &value1) != 0))
+ if (clib_bihash_search_16_8 (&tsm->in2out_ed, &kv1, &value1))
{
if (is_slow_path)
{
- if (PREDICT_FALSE(snat_not_translate(sm, node, sw_if_index1,
- ip1, proto1, rx_fib_index1)) && !is_output_feature)
- goto trace01;
+ if (is_output_feature)
+ {
+ if (PREDICT_FALSE(nat44_ed_not_translate_output_feature(
+ sm, ip1, ip1->protocol, udp1->src_port,
+ udp1->dst_port, thread_index, sw_if_index1)))
+ goto trace01;
+ }
+ else
+ {
+ if (PREDICT_FALSE(nat44_ed_not_translate(sm, node,
+ sw_if_index1, ip1, proto1, rx_fib_index1,
+ thread_index)))
+ goto trace01;
+ }
+
+ next1 = slow_path_ed (sm, b1, rx_fib_index1, &kv1, &s1, node,
+ next1, thread_index, now);
- next1 = slow_path (sm, b1, ip1, rx_fib_index1, &key1,
- &s1, node, next1, thread_index);
if (PREDICT_FALSE (next1 == SNAT_IN2OUT_NEXT_DROP))
goto trace01;
}
}
}
else
- s1 = pool_elt_at_index (sm->per_thread_data[thread_index].sessions,
- value1.value);
+ {
+ s1 = pool_elt_at_index (tsm->sessions, value1.value);
+ }
+
+ b1->flags |= VNET_BUFFER_F_IS_NATED;
- old_addr1 = ip1->src_address.as_u32;
- ip1->src_address = s1->out2in.addr;
- new_addr1 = ip1->src_address.as_u32;
if (!is_output_feature)
vnet_buffer(b1)->sw_if_index[VLIB_TX] = s1->out2in.fib_index;
+ old_addr1 = ip1->src_address.as_u32;
+ new_addr1 = ip1->src_address.as_u32 = s1->out2in.addr.as_u32;
sum1 = ip1->checksum;
- sum1 = ip_csum_update (sum1, old_addr1, new_addr1,
- ip4_header_t,
- src_address /* changed member */);
+ sum1 = ip_csum_update (sum1, old_addr1, new_addr1, ip4_header_t,
+ src_address);
+ if (PREDICT_FALSE (is_twice_nat_session (s1)))
+ sum1 = ip_csum_update (sum1, ip1->dst_address.as_u32,
+ s1->ext_host_addr.as_u32, ip4_header_t,
+ dst_address);
ip1->checksum = ip_csum_fold (sum1);
- if (PREDICT_TRUE(proto1 == SNAT_PROTOCOL_TCP))
+ if (PREDICT_TRUE (proto1 == SNAT_PROTOCOL_TCP))
{
old_port1 = tcp1->src_port;
- tcp1->src_port = s1->out2in.port;
- new_port1 = tcp1->src_port;
+ new_port1 = tcp1->src_port = s1->out2in.port;
sum1 = tcp1->checksum;
- sum1 = ip_csum_update (sum1, old_addr1, new_addr1,
- ip4_header_t,
- dst_address /* changed member */);
- sum1 = ip_csum_update (sum1, old_port1, new_port1,
- ip4_header_t /* cheat */,
- length /* changed member */);
+ sum1 = ip_csum_update (sum1, old_addr1, new_addr1, ip4_header_t,
+ dst_address);
+ sum1 = ip_csum_update (sum1, old_port1, new_port1, ip4_header_t,
+ length);
+ if (PREDICT_FALSE (is_twice_nat_session (s1)))
+ {
+ sum1 = ip_csum_update (sum1, ip1->dst_address.as_u32,
+ s1->ext_host_addr.as_u32,
+ ip4_header_t, dst_address);
+ sum1 = ip_csum_update (sum1, tcp1->dst_port,
+ s1->ext_host_port, ip4_header_t,
+ length);
+ tcp1->dst_port = s1->ext_host_port;
+ ip1->dst_address.as_u32 = s1->ext_host_addr.as_u32;
+ }
tcp1->checksum = ip_csum_fold(sum1);
+ if (nat44_set_tcp_session_state_i2o (sm, s1, tcp1, thread_index))
+ goto trace01;
}
else
{
- old_port1 = udp1->src_port;
udp1->src_port = s1->out2in.port;
udp1->checksum = 0;
+ if (PREDICT_FALSE (is_twice_nat_session (s1)))
+ {
+ udp1->dst_port = s1->ext_host_port;
+ ip1->dst_address.as_u32 = s1->ext_host_addr.as_u32;
+ }
}
- /* Hairpinning */
- if (!is_output_feature)
- snat_hairpinning (sm, b1, ip1, udp1, tcp1, proto1);
-
/* Accounting */
- s1->last_heard = now;
- s1->total_pkts++;
- s1->total_bytes += vlib_buffer_length_in_chain (vm, b1);
- /* Per-user LRU list maintenance for dynamic translation */
- if (!snat_is_session_static (s1))
- {
- clib_dlist_remove (sm->per_thread_data[thread_index].list_pool,
- s1->per_user_index);
- clib_dlist_addtail (sm->per_thread_data[thread_index].list_pool,
- s1->per_user_list_head_index,
- s1->per_user_index);
- }
- trace01:
+ nat44_session_update_counters (s1, now,
+ vlib_buffer_length_in_chain (vm, b1));
+ 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));
+ vlib_add_trace (vm, node, b1, sizeof (*t));
+ t->is_slow_path = is_slow_path;
t->sw_if_index = 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 - tsm->sessions;
}
pkts_processed += next1 != SNAT_IN2OUT_NEXT_DROP;
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;
- ip_csum_t sum0;
- u32 new_addr0, old_addr0;
+ vlib_buffer_t *b0;
+ u32 next0, sw_if_index0, rx_fib_index0, iph_offset0 = 0, proto0,
+ new_addr0, old_addr0;
u16 old_port0, new_port0;
- udp_header_t * udp0;
- tcp_header_t * tcp0;
+ ip4_header_t *ip0;
+ udp_header_t *udp0;
+ tcp_header_t *tcp0;
icmp46_header_t * icmp0;
- snat_session_key_t key0;
- u32 rx_fib_index0;
- u32 proto0;
- snat_session_t * s0 = 0;
- clib_bihash_kv_8_8_t kv0, value0;
- u32 iph_offset0 = 0;
+ snat_session_t *s0 = 0;
+ clib_bihash_kv_16_8_t kv0, value0;
+ ip_csum_t sum0;
/* speculatively enqueue b0 to the current next frame */
bi0 = from[0];
ip0 = (ip4_header_t *) ((u8 *) vlib_buffer_get_current (b0) +
iph_offset0);
- 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 = vec_elt (sm->ip4_main->fib_index_by_sw_if_index,
- sw_if_index0);
+ rx_fib_index0 = fib_table_get_index_for_sw_if_index (FIB_PROTOCOL_IP4,
+ sw_if_index0);
if (PREDICT_FALSE(ip0->ttl == 1))
{
goto trace0;
}
+ udp0 = ip4_next_header (ip0);
+ tcp0 = (tcp_header_t *) udp0;
+ icmp0 = (icmp46_header_t *) udp0;
proto0 = ip_proto_to_snat_proto (ip0->protocol);
- /* Next configured feature, probably ip4-lookup */
if (is_slow_path)
{
if (PREDICT_FALSE (proto0 == ~0))
{
- snat_in2out_unknown_proto (sm, b0, ip0, rx_fib_index0,
- thread_index, now, vm);
+ s0 = nat44_ed_in2out_unknown_proto (sm, b0, ip0,
+ rx_fib_index0,
+ thread_index, now, vm,
+ node);
+ if (!s0)
+ next0 = SNAT_IN2OUT_NEXT_DROP;
goto trace0;
}
if (PREDICT_FALSE (proto0 == SNAT_PROTOCOL_ICMP))
{
- next0 = icmp_in2out_slow_path
+ next0 = icmp_in2out_ed_slow_path
(sm, b0, ip0, icmp0, sw_if_index0, rx_fib_index0, node,
next0, now, thread_index, &s0);
goto trace0;
}
else
{
+ if (is_output_feature)
+ {
+ if (PREDICT_FALSE(nat_not_translate_output_feature_fwd(
+ sm, ip0, thread_index, now, vm, b0)))
+ goto trace0;
+ }
+
if (PREDICT_FALSE (proto0 == ~0 || proto0 == SNAT_PROTOCOL_ICMP))
{
next0 = SNAT_IN2OUT_NEXT_SLOW_PATH;
goto trace0;
}
- }
- key0.addr = ip0->src_address;
- key0.port = udp0->src_port;
- key0.protocol = proto0;
- key0.fib_index = rx_fib_index0;
+ if (ip4_is_fragment (ip0))
+ {
+ b0->error = node->errors[SNAT_IN2OUT_ERROR_DROP_FRAGMENT];
+ next0 = SNAT_IN2OUT_NEXT_DROP;
+ goto trace0;
+ }
+ }
- kv0.key = key0.as_u64;
+ make_ed_kv (&kv0, &ip0->src_address, &ip0->dst_address, ip0->protocol,
+ rx_fib_index0, udp0->src_port, udp0->dst_port);
- if (clib_bihash_search_8_8 (&sm->in2out, &kv0, &value0))
+ if (clib_bihash_search_16_8 (&tsm->in2out_ed, &kv0, &value0))
{
if (is_slow_path)
{
- if (PREDICT_FALSE(snat_not_translate(sm, node, sw_if_index0,
- ip0, proto0, rx_fib_index0)) && !is_output_feature)
- goto trace0;
+ if (is_output_feature)
+ {
+ if (PREDICT_FALSE(nat44_ed_not_translate_output_feature(
+ sm, ip0, ip0->protocol, udp0->src_port,
+ udp0->dst_port, thread_index, sw_if_index0)))
+ goto trace0;
+ }
+ else
+ {
+ if (PREDICT_FALSE(nat44_ed_not_translate(sm, node,
+ sw_if_index0, ip0, proto0, rx_fib_index0,
+ thread_index)))
+ goto trace0;
+ }
- next0 = slow_path (sm, b0, ip0, rx_fib_index0, &key0,
- &s0, node, next0, thread_index);
+ next0 = slow_path_ed (sm, b0, rx_fib_index0, &kv0, &s0, node,
+ next0, thread_index, now);
if (PREDICT_FALSE (next0 == SNAT_IN2OUT_NEXT_DROP))
goto trace0;
}
}
else
- s0 = pool_elt_at_index (sm->per_thread_data[thread_index].sessions,
- value0.value);
+ {
+ s0 = pool_elt_at_index (tsm->sessions, value0.value);
+ }
+
+ b0->flags |= VNET_BUFFER_F_IS_NATED;
- old_addr0 = ip0->src_address.as_u32;
- ip0->src_address = s0->out2in.addr;
- new_addr0 = ip0->src_address.as_u32;
if (!is_output_feature)
vnet_buffer(b0)->sw_if_index[VLIB_TX] = s0->out2in.fib_index;
+ old_addr0 = ip0->src_address.as_u32;
+ new_addr0 = ip0->src_address.as_u32 = s0->out2in.addr.as_u32;
sum0 = ip0->checksum;
- sum0 = ip_csum_update (sum0, old_addr0, new_addr0,
- ip4_header_t,
- src_address /* changed member */);
+ sum0 = ip_csum_update (sum0, old_addr0, new_addr0, ip4_header_t,
+ src_address);
+ if (PREDICT_FALSE (is_twice_nat_session (s0)))
+ sum0 = ip_csum_update (sum0, ip0->dst_address.as_u32,
+ s0->ext_host_addr.as_u32, ip4_header_t,
+ dst_address);
ip0->checksum = ip_csum_fold (sum0);
- if (PREDICT_TRUE(proto0 == SNAT_PROTOCOL_TCP))
+ if (PREDICT_TRUE (proto0 == SNAT_PROTOCOL_TCP))
{
old_port0 = tcp0->src_port;
- tcp0->src_port = s0->out2in.port;
- new_port0 = tcp0->src_port;
+ new_port0 = tcp0->src_port = s0->out2in.port;
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 */);
+ sum0 = ip_csum_update (sum0, old_addr0, new_addr0, ip4_header_t,
+ dst_address);
+ sum0 = ip_csum_update (sum0, old_port0, new_port0, ip4_header_t,
+ length);
+ if (PREDICT_FALSE (is_twice_nat_session (s0)))
+ {
+ sum0 = ip_csum_update (sum0, ip0->dst_address.as_u32,
+ s0->ext_host_addr.as_u32,
+ ip4_header_t, dst_address);
+ sum0 = ip_csum_update (sum0, tcp0->dst_port,
+ s0->ext_host_port, ip4_header_t,
+ length);
+ tcp0->dst_port = s0->ext_host_port;
+ ip0->dst_address.as_u32 = s0->ext_host_addr.as_u32;
+ }
tcp0->checksum = ip_csum_fold(sum0);
+ if (nat44_set_tcp_session_state_i2o (sm, s0, tcp0, thread_index))
+ goto trace0;
}
else
{
- old_port0 = udp0->src_port;
udp0->src_port = s0->out2in.port;
udp0->checksum = 0;
+ if (PREDICT_FALSE (is_twice_nat_session (s0)))
+ {
+ udp0->dst_port = s0->ext_host_port;
+ ip0->dst_address.as_u32 = s0->ext_host_addr.as_u32;
+ }
}
- /* Hairpinning */
- if (!is_output_feature)
- snat_hairpinning (sm, b0, ip0, udp0, tcp0, proto0);
-
/* Accounting */
- s0->last_heard = now;
- s0->total_pkts++;
- s0->total_bytes += vlib_buffer_length_in_chain (vm, b0);
- /* Per-user LRU list maintenance for dynamic translation */
- if (!snat_is_session_static (s0))
- {
- clib_dlist_remove (sm->per_thread_data[thread_index].list_pool,
- s0->per_user_index);
- clib_dlist_addtail (sm->per_thread_data[thread_index].list_pool,
- s0->per_user_list_head_index,
- s0->per_user_index);
- }
+ nat44_session_update_counters (s0, now,
+ vlib_buffer_length_in_chain (vm, b0));
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));
+ vlib_add_trace (vm, node, b0, sizeof (*t));
t->is_slow_path = is_slow_path;
t->sw_if_index = sw_if_index0;
t->next_index = next0;
- t->session_index = ~0;
+ t->session_index = ~0;
if (s0)
- t->session_index = s0 - sm->per_thread_data[thread_index].sessions;
+ t->session_index = s0 - tsm->sessions;
}
pkts_processed += next0 != SNAT_IN2OUT_NEXT_DROP;
vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
to_next, n_left_to_next,
bi0, next0);
- }
+ }
vlib_put_next_frame (vm, node, next_index, n_left_to_next);
}
}
static uword
-snat_in2out_fast_path_fn (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame)
+nat44_ed_in2out_fast_path_fn (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);
+ return nat44_ed_in2out_node_fn_inline (vm, node, frame, 0, 0);
}
-VLIB_REGISTER_NODE (snat_in2out_node) = {
- .function = snat_in2out_fast_path_fn,
- .name = "nat44-in2out",
+VLIB_REGISTER_NODE (nat44_ed_in2out_node) = {
+ .function = nat44_ed_in2out_fast_path_fn,
+ .name = "nat44-ed-in2out",
.vector_size = sizeof (u32),
.format_trace = format_snat_in2out_trace,
.type = VLIB_NODE_TYPE_INTERNAL,
.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_SLOW_PATH] = "nat44-ed-in2out-slowpath",
[SNAT_IN2OUT_NEXT_ICMP_ERROR] = "ip4-icmp-error",
+ [SNAT_IN2OUT_NEXT_REASS] = "nat44-in2out-reass",
},
};
-VLIB_NODE_FUNCTION_MULTIARCH (snat_in2out_node, snat_in2out_fast_path_fn);
+VLIB_NODE_FUNCTION_MULTIARCH (nat44_ed_in2out_node, nat44_ed_in2out_fast_path_fn);
static uword
-snat_in2out_output_fast_path_fn (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame)
+nat44_ed_in2out_output_fast_path_fn (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);
+ return nat44_ed_in2out_node_fn_inline (vm, node, frame, 0, 1);
}
-VLIB_REGISTER_NODE (snat_in2out_output_node) = {
- .function = snat_in2out_output_fast_path_fn,
- .name = "nat44-in2out-output",
+VLIB_REGISTER_NODE (nat44_ed_in2out_output_node) = {
+ .function = nat44_ed_in2out_output_fast_path_fn,
+ .name = "nat44-ed-in2out-output",
.vector_size = sizeof (u32),
.format_trace = format_snat_in2out_trace,
.type = VLIB_NODE_TYPE_INTERNAL,
.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_SLOW_PATH] = "nat44-ed-in2out-output-slowpath",
[SNAT_IN2OUT_NEXT_ICMP_ERROR] = "ip4-icmp-error",
+ [SNAT_IN2OUT_NEXT_REASS] = "nat44-in2out-reass",
},
};
-VLIB_NODE_FUNCTION_MULTIARCH (snat_in2out_output_node,
- snat_in2out_output_fast_path_fn);
+VLIB_NODE_FUNCTION_MULTIARCH (nat44_ed_in2out_output_node,
+ nat44_ed_in2out_output_fast_path_fn);
static uword
-snat_in2out_slow_path_fn (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame)
+nat44_ed_in2out_slow_path_fn (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);
+ return nat44_ed_in2out_node_fn_inline (vm, node, frame, 1, 0);
}
-VLIB_REGISTER_NODE (snat_in2out_slowpath_node) = {
- .function = snat_in2out_slow_path_fn,
- .name = "nat44-in2out-slowpath",
+VLIB_REGISTER_NODE (nat44_ed_in2out_slowpath_node) = {
+ .function = nat44_ed_in2out_slow_path_fn,
+ .name = "nat44-ed-in2out-slowpath",
.vector_size = sizeof (u32),
.format_trace = format_snat_in2out_trace,
.type = VLIB_NODE_TYPE_INTERNAL,
.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_SLOW_PATH] = "nat44-ed-in2out-slowpath",
[SNAT_IN2OUT_NEXT_ICMP_ERROR] = "ip4-icmp-error",
+ [SNAT_IN2OUT_NEXT_REASS] = "nat44-in2out-reass",
},
};
-VLIB_NODE_FUNCTION_MULTIARCH (snat_in2out_slowpath_node,
- snat_in2out_slow_path_fn);
+VLIB_NODE_FUNCTION_MULTIARCH (nat44_ed_in2out_slowpath_node,
+ nat44_ed_in2out_slow_path_fn);
static uword
-snat_in2out_output_slow_path_fn (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame)
+nat44_ed_in2out_output_slow_path_fn (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 nat44_ed_in2out_node_fn_inline (vm, node, frame, 1, 1);
}
-VLIB_REGISTER_NODE (snat_in2out_output_slowpath_node) = {
- .function = snat_in2out_output_slow_path_fn,
- .name = "nat44-in2out-output-slowpath",
+VLIB_REGISTER_NODE (nat44_ed_in2out_output_slowpath_node) = {
+ .function = nat44_ed_in2out_output_slow_path_fn,
+ .name = "nat44-ed-in2out-output-slowpath",
.vector_size = sizeof (u32),
.format_trace = format_snat_in2out_trace,
.type = VLIB_NODE_TYPE_INTERNAL,
.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_SLOW_PATH] = "nat44-ed-in2out-output-slowpath",
[SNAT_IN2OUT_NEXT_ICMP_ERROR] = "ip4-icmp-error",
+ [SNAT_IN2OUT_NEXT_REASS] = "nat44-in2out-reass",
},
};
-VLIB_NODE_FUNCTION_MULTIARCH (snat_in2out_output_slowpath_node,
- snat_in2out_output_slow_path_fn);
+VLIB_NODE_FUNCTION_MULTIARCH (nat44_ed_in2out_output_slowpath_node,
+ nat44_ed_in2out_output_slow_path_fn);
/**************************/
/*** deterministic mode ***/
u32 pkts_processed = 0;
snat_main_t * sm = &snat_main;
u32 now = (u32) vlib_time_now (vm);
- u32 thread_index = vlib_get_thread_index ();
+ u32 thread_index = vm->thread_index;
from = vlib_frame_vector_args (frame);
n_left_from = frame->n_vectors;
dm0 = snat_det_map_by_user(sm, &ip0->src_address);
if (PREDICT_FALSE(!dm0))
{
- clib_warning("no match for internal host %U",
- format_ip4_address, &ip0->src_address);
+ nat_log_info ("no match for internal host %U",
+ format_ip4_address, &ip0->src_address);
next0 = SNAT_IN2OUT_NEXT_DROP;
b0->error = node->errors[SNAT_IN2OUT_ERROR_NO_TRANSLATION];
goto trace0;
dm1 = snat_det_map_by_user(sm, &ip1->src_address);
if (PREDICT_FALSE(!dm1))
{
- clib_warning("no match for internal host %U",
- format_ip4_address, &ip0->src_address);
+ nat_log_info ("no match for internal host %U",
+ format_ip4_address, &ip0->src_address);
next1 = SNAT_IN2OUT_NEXT_DROP;
b1->error = node->errors[SNAT_IN2OUT_ERROR_NO_TRANSLATION];
goto trace1;
dm0 = snat_det_map_by_user(sm, &ip0->src_address);
if (PREDICT_FALSE(!dm0))
{
- clib_warning("no match for internal host %U",
- format_ip4_address, &ip0->src_address);
+ nat_log_info ("no match for internal host %U",
+ format_ip4_address, &ip0->src_address);
next0 = SNAT_IN2OUT_NEXT_DROP;
b0->error = node->errors[SNAT_IN2OUT_ERROR_NO_TRANSLATION];
goto trace00;
* @param e optional parameter
*/
u32 icmp_match_in2out_det(snat_main_t *sm, vlib_node_runtime_t *node,
- u32 thread_index, vlib_buffer_t *b0, u8 *p_proto,
+ u32 thread_index, vlib_buffer_t *b0,
+ ip4_header_t *ip0, u8 *p_proto,
snat_session_key_t *p_value,
u8 *p_dont_translate, void *d, void *e)
{
- ip4_header_t *ip0;
icmp46_header_t *icmp0;
u32 sw_if_index0;
u32 rx_fib_index0;
ip4_address_t in_addr;
u16 in_port;
- ip0 = vlib_buffer_get_current (b0);
icmp0 = (icmp46_header_t *) ip4_next_header (ip0);
echo0 = (icmp_echo_header_t *)(icmp0+1);
sw_if_index0 = vnet_buffer(b0)->sw_if_index[VLIB_RX];
dm0 = snat_det_map_by_user(sm, &in_addr);
if (PREDICT_FALSE(!dm0))
{
- clib_warning("no match for internal host %U",
- format_ip4_address, &in_addr);
+ nat_log_info ("no match for internal host %U",
+ format_ip4_address, &in_addr);
if (PREDICT_FALSE(snat_not_translate_fast(sm, node, sw_if_index0, ip0,
IP_PROTOCOL_ICMP, rx_fib_index0)))
{
{
snat_main_t *sm = &snat_main;
vlib_thread_main_t *tm = vlib_get_thread_main ();
- u32 n_left_from, *from, *to_next = 0;
+ u32 n_left_from, *from, *to_next = 0, *to_next_drop = 0;
static __thread vlib_frame_queue_elt_t **handoff_queue_elt_by_worker_index;
static __thread vlib_frame_queue_t **congested_handoff_queue_by_worker_index
= 0;
vlib_frame_queue_elt_t *hf = 0;
+ vlib_frame_queue_t *fq;
vlib_frame_t *f = 0;
int i;
u32 n_left_to_next_worker = 0, *to_next_worker = 0;
u32 next_worker_index = 0;
u32 current_worker_index = ~0;
- u32 thread_index = vlib_get_thread_index ();
+ u32 thread_index = vm->thread_index;
u32 fq_index;
u32 to_node_index;
+ vlib_frame_t *d = 0;
ASSERT (vec_len (sm->workers));
vec_validate (handoff_queue_elt_by_worker_index, tm->n_vlib_mains - 1);
vec_validate_init_empty (congested_handoff_queue_by_worker_index,
- sm->first_worker_index + sm->num_workers - 1,
+ tm->n_vlib_mains - 1,
(vlib_frame_queue_t *) (~0));
}
if (next_worker_index != current_worker_index)
{
+ fq = is_vlib_frame_queue_congested (
+ fq_index, next_worker_index, NAT_FQ_NELTS - 2,
+ congested_handoff_queue_by_worker_index);
+
+ if (fq)
+ {
+ /* if this is 1st frame */
+ if (!d)
+ {
+ d = vlib_get_frame_to_node (vm, sm->error_node_index);
+ to_next_drop = vlib_frame_vector_args (d);
+ }
+
+ to_next_drop[0] = bi0;
+ to_next_drop += 1;
+ d->n_vectors++;
+ b0->error = node->errors[SNAT_IN2OUT_ERROR_FQ_CONGESTED];
+ goto trace0;
+ }
+
if (hf)
hf->n_vectors = VLIB_FRAME_SIZE - n_left_to_next_worker;
f->n_vectors++;
}
+trace0:
if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)
&& (b0->flags & VLIB_BUFFER_IS_TRACED)))
{
if (f)
vlib_put_frame_to_node (vm, to_node_index, f);
+ if (d)
+ vlib_put_frame_to_node (vm, sm->error_node_index, d);
+
if (hf)
hf->n_vectors = VLIB_FRAME_SIZE - n_left_to_next_worker;
.format_trace = format_snat_in2out_worker_handoff_trace,
.type = VLIB_NODE_TYPE_INTERNAL,
+ .n_errors = ARRAY_LEN(snat_in2out_error_strings),
+ .error_strings = snat_in2out_error_strings,
+
.n_next_nodes = 1,
.next_nodes = {
}
m_key.addr.as_u32 = dst_addr->as_u32;
- m_key.fib_index = sm->outside_fib_index;
+ m_key.fib_index = 0;
m_key.port = 0;
m_key.protocol = 0;
kv.key = m_key.as_u64;
return 0;
}
-static uword
-snat_hairpin_dst_fn (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame)
+static inline uword
+snat_hairpin_dst_fn_inline (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * frame,
+ int is_ed)
{
- u32 n_left_from, * from, * to_next;
+ u32 n_left_from, * from, * to_next, stats_node_index;
snat_in2out_next_t next_index;
u32 pkts_processed = 0;
snat_main_t * sm = &snat_main;
+ stats_node_index = is_ed ? nat44_ed_hairpin_dst_node.index :
+ snat_hairpin_dst_node.index;
+
from = vlib_frame_vector_args (frame);
n_left_from = frame->n_vectors;
next_index = node->cached_next_index;
udp_header_t * udp0 = ip4_next_header (ip0);
tcp_header_t * tcp0 = (tcp_header_t *) udp0;
- snat_hairpinning (sm, b0, ip0, udp0, tcp0, proto0);
+ snat_hairpinning (sm, b0, ip0, udp0, tcp0, proto0, is_ed);
}
else if (proto0 == SNAT_PROTOCOL_ICMP)
{
icmp46_header_t * icmp0 = ip4_next_header (ip0);
- snat_icmp_hairpinning (sm, b0, ip0, icmp0);
+ snat_icmp_hairpinning (sm, b0, ip0, icmp0, is_ed);
}
else
{
- snat_hairpinning_unknown_proto (sm, b0, ip0);
+ if (is_ed)
+ nat44_ed_hairpinning_unknown_proto (sm, b0, ip0);
+ else
+ nat_hairpinning_sm_unknown_proto (sm, b0, ip0);
}
vnet_buffer (b0)->snat.flags = SNAT_FLAG_HAIRPINNING;
- clib_warning("is hairpinning");
}
pkts_processed += next0 != SNAT_IN2OUT_NEXT_DROP;
vlib_put_next_frame (vm, node, next_index, n_left_to_next);
}
- vlib_node_increment_counter (vm, snat_hairpin_dst_node.index,
+ vlib_node_increment_counter (vm, stats_node_index,
SNAT_IN2OUT_ERROR_IN2OUT_PACKETS,
pkts_processed);
return frame->n_vectors;
}
+static uword
+snat_hairpin_dst_fn (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * frame)
+{
+ return snat_hairpin_dst_fn_inline (vm, node, frame, 0);
+}
+
VLIB_REGISTER_NODE (snat_hairpin_dst_node) = {
.function = snat_hairpin_dst_fn,
.name = "nat44-hairpin-dst",
snat_hairpin_dst_fn);
static uword
-snat_hairpin_src_fn (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame)
+nat44_ed_hairpin_dst_fn (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * frame)
{
- u32 n_left_from, * from, * to_next;
+ return snat_hairpin_dst_fn_inline (vm, node, frame, 1);
+}
+
+VLIB_REGISTER_NODE (nat44_ed_hairpin_dst_node) = {
+ .function = nat44_ed_hairpin_dst_fn,
+ .name = "nat44-ed-hairpin-dst",
+ .vector_size = sizeof (u32),
+ .type = VLIB_NODE_TYPE_INTERNAL,
+ .n_errors = ARRAY_LEN(snat_in2out_error_strings),
+ .error_strings = snat_in2out_error_strings,
+ .n_next_nodes = 2,
+ .next_nodes = {
+ [SNAT_IN2OUT_NEXT_DROP] = "error-drop",
+ [SNAT_IN2OUT_NEXT_LOOKUP] = "ip4-lookup",
+ },
+};
+
+VLIB_NODE_FUNCTION_MULTIARCH (nat44_ed_hairpin_dst_node,
+ nat44_ed_hairpin_dst_fn);
+
+static inline uword
+snat_hairpin_src_fn_inline (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * frame,
+ int is_ed)
+{
+ u32 n_left_from, * from, * to_next, stats_node_index;
snat_in2out_next_t next_index;
u32 pkts_processed = 0;
snat_main_t *sm = &snat_main;
+ stats_node_index = is_ed ? nat44_ed_hairpin_src_node.index :
+ snat_hairpin_src_node.index;
+
from = vlib_frame_vector_args (frame);
n_left_from = frame->n_vectors;
next_index = node->cached_next_index;
u32 bi0;
vlib_buffer_t * b0;
u32 next0;
+ snat_interface_t *i;
+ u32 sw_if_index0;
/* speculatively enqueue b0 to the current next frame */
bi0 = from[0];
n_left_to_next -= 1;
b0 = vlib_get_buffer (vm, bi0);
+ sw_if_index0 = vnet_buffer(b0)->sw_if_index[VLIB_RX];
next0 = SNAT_HAIRPIN_SRC_NEXT_INTERFACE_OUTPUT;
- if (PREDICT_FALSE ((vnet_buffer (b0)->snat.flags) & SNAT_FLAG_HAIRPINNING))
- {
- if (PREDICT_TRUE (sm->num_workers > 1))
- next0 = SNAT_HAIRPIN_SRC_NEXT_SNAT_IN2OUT_WH;
- else
- next0 = SNAT_HAIRPIN_SRC_NEXT_SNAT_IN2OUT;
- }
+ pool_foreach (i, sm->output_feature_interfaces,
+ ({
+ /* Only packets from NAT inside interface */
+ if ((nat_interface_is_inside(i)) && (sw_if_index0 == i->sw_if_index))
+ {
+ if (PREDICT_FALSE ((vnet_buffer (b0)->snat.flags) &
+ SNAT_FLAG_HAIRPINNING))
+ {
+ if (PREDICT_TRUE (sm->num_workers > 1))
+ next0 = SNAT_HAIRPIN_SRC_NEXT_SNAT_IN2OUT_WH;
+ else
+ next0 = SNAT_HAIRPIN_SRC_NEXT_SNAT_IN2OUT;
+ }
+ break;
+ }
+ }));
pkts_processed += next0 != SNAT_IN2OUT_NEXT_DROP;
vlib_put_next_frame (vm, node, next_index, n_left_to_next);
}
- vlib_node_increment_counter (vm, snat_hairpin_src_node.index,
+ vlib_node_increment_counter (vm, stats_node_index,
SNAT_IN2OUT_ERROR_IN2OUT_PACKETS,
pkts_processed);
return frame->n_vectors;
}
+static uword
+snat_hairpin_src_fn (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * frame)
+{
+ return snat_hairpin_src_fn_inline (vm, node, frame, 0);
+}
+
VLIB_REGISTER_NODE (snat_hairpin_src_node) = {
.function = snat_hairpin_src_fn,
.name = "nat44-hairpin-src",
VLIB_NODE_FUNCTION_MULTIARCH (snat_hairpin_src_node,
snat_hairpin_src_fn);
+static uword
+nat44_ed_hairpin_src_fn (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * frame)
+{
+ return snat_hairpin_src_fn_inline (vm, node, frame, 1);
+}
+
+VLIB_REGISTER_NODE (nat44_ed_hairpin_src_node) = {
+ .function = nat44_ed_hairpin_src_fn,
+ .name = "nat44-ed-hairpin-src",
+ .vector_size = sizeof (u32),
+ .type = VLIB_NODE_TYPE_INTERNAL,
+ .n_errors = ARRAY_LEN(snat_in2out_error_strings),
+ .error_strings = snat_in2out_error_strings,
+ .n_next_nodes = SNAT_HAIRPIN_SRC_N_NEXT,
+ .next_nodes = {
+ [SNAT_HAIRPIN_SRC_NEXT_DROP] = "error-drop",
+ [SNAT_HAIRPIN_SRC_NEXT_SNAT_IN2OUT] = "nat44-ed-in2out-output",
+ [SNAT_HAIRPIN_SRC_NEXT_INTERFACE_OUTPUT] = "interface-output",
+ [SNAT_HAIRPIN_SRC_NEXT_SNAT_IN2OUT_WH] = "nat44-in2out-output-worker-handoff",
+ },
+};
+
+VLIB_NODE_FUNCTION_MULTIARCH (nat44_ed_hairpin_src_node,
+ nat44_ed_hairpin_src_fn);
+
static uword
snat_in2out_fast_static_map_fn (vlib_main_t * vm,
vlib_node_runtime_t * node,
key0.port = udp0->src_port;
key0.fib_index = rx_fib_index0;
- if (snat_static_mapping_match(sm, key0, &sm0, 0, 0))
+ if (snat_static_mapping_match(sm, key0, &sm0, 0, 0, 0, 0))
{
b0->error = node->errors[SNAT_IN2OUT_ERROR_NO_TRANSLATION];
next0= SNAT_IN2OUT_NEXT_DROP;
}
/* Hairpinning */
- snat_hairpinning (sm, b0, ip0, udp0, tcp0, proto0);
+ snat_hairpinning (sm, b0, ip0, udp0, tcp0, proto0, 0);
trace0:
if (PREDICT_FALSE((node->flags & VLIB_NODE_FLAG_TRACE)
[SNAT_IN2OUT_NEXT_LOOKUP] = "ip4-lookup",
[SNAT_IN2OUT_NEXT_SLOW_PATH] = "nat44-in2out-slowpath",
[SNAT_IN2OUT_NEXT_ICMP_ERROR] = "ip4-icmp-error",
+ [SNAT_IN2OUT_NEXT_REASS] = "nat44-in2out-reass",
},
};
Code Review / vpp.git / blobdiff