#include <vlib/vlib.h>
#include <vnet/vnet.h>
#include <vnet/pg/pg.h>
+#include <vnet/handoff.h>
#include <vnet/ip/ip.h>
#include <vnet/ethernet/ethernet.h>
u32 is_slow_path;
} snat_in2out_trace_t;
+typedef struct {
+ u32 next_worker_index;
+ u8 do_handoff;
+} snat_in2out_worker_handoff_trace_t;
+
/* packet trace format function */
static u8 * format_snat_in2out_trace (u8 * s, va_list * args)
{
return s;
}
+static u8 * format_snat_in2out_worker_handoff_trace (u8 * s, va_list * args)
+{
+ CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
+ CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
+ snat_in2out_worker_handoff_trace_t * t =
+ va_arg (*args, snat_in2out_worker_handoff_trace_t *);
+ char * m;
+
+ m = t->do_handoff ? "next worker" : "same worker";
+ s = format (s, "SNAT_IN2OUT_WORKER_HANDOFF: %s %d", m, t->next_worker_index);
+
+ 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_worker_handoff_node;
#define foreach_snat_in2out_error \
_(UNSUPPORTED_PROTOCOL, "Unsupported protocol") \
SNAT_IN2OUT_N_NEXT,
} snat_in2out_next_t;
-
static u32 slow_path (snat_main_t *sm, vlib_buffer_t *b0,
ip4_header_t * ip0,
u32 rx_fib_index0,
snat_session_key_t * key0,
snat_session_t ** sessionp,
vlib_node_runtime_t * node,
- u32 next0)
+ u32 next0,
+ u32 cpu_index)
{
snat_user_t *u;
snat_user_key_t user_key;
u32 address_index = ~0;
u32 outside_fib_index;
uword * p;
+ snat_static_mapping_key_t worker_by_out_key;
p = hash_get (sm->ip4_main->fib_index_by_table_id, sm->outside_vrf_id);
if (! p)
if (clib_bihash_search_8_8 (&sm->user_hash, &kv0, &value0))
{
/* no, make a new one */
- pool_get (sm->users, u);
+ pool_get (sm->per_thread_data[cpu_index].users, u);
memset (u, 0, sizeof (*u));
u->addr = ip0->src_address;
- pool_get (sm->list_pool, per_user_list_head_elt);
+ pool_get (sm->per_thread_data[cpu_index].list_pool, per_user_list_head_elt);
u->sessions_per_user_list_head_index = per_user_list_head_elt -
- sm->list_pool;
+ sm->per_thread_data[cpu_index].list_pool;
- clib_dlist_init (sm->list_pool, u->sessions_per_user_list_head_index);
+ clib_dlist_init (sm->per_thread_data[cpu_index].list_pool,
+ u->sessions_per_user_list_head_index);
- kv0.value = u - sm->users;
+ kv0.value = u - sm->per_thread_data[cpu_index].users;
/* add user */
clib_bihash_add_del_8_8 (&sm->user_hash, &kv0, 1 /* is_add */);
}
else
{
- u = pool_elt_at_index (sm->users, value0.value);
+ u = pool_elt_at_index (sm->per_thread_data[cpu_index].users,
+ value0.value);
}
/* Over quota? Recycle the least recently used dynamic translation */
/* Remove the oldest dynamic translation */
do {
oldest_per_user_translation_list_index =
- clib_dlist_remove_head
- (sm->list_pool, u->sessions_per_user_list_head_index);
+ clib_dlist_remove_head (sm->per_thread_data[cpu_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->list_pool,
+ clib_dlist_addtail (sm->per_thread_data[cpu_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->list_pool,
+ pool_elt_at_index (sm->per_thread_data[cpu_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->sessions, session_index);
+ s = pool_elt_at_index (sm->per_thread_data[cpu_index].sessions,
+ session_index);
} while (!snat_is_session_static (s));
/* Remove in2out, out2in keys */
}
/* Create a new session */
- pool_get (sm->sessions, s);
+ pool_get (sm->per_thread_data[cpu_index].sessions, s);
memset (s, 0, sizeof (*s));
s->outside_address_index = address_index;
}
/* Create list elts */
- pool_get (sm->list_pool, per_user_translation_list_elt);
- clib_dlist_init (sm->list_pool, per_user_translation_list_elt -
- sm->list_pool);
-
- per_user_translation_list_elt->value = s - sm->sessions;
- s->per_user_index = per_user_translation_list_elt - sm->list_pool;
+ pool_get (sm->per_thread_data[cpu_index].list_pool,
+ per_user_translation_list_elt);
+ clib_dlist_init (sm->per_thread_data[cpu_index].list_pool,
+ per_user_translation_list_elt -
+ sm->per_thread_data[cpu_index].list_pool);
+
+ per_user_translation_list_elt->value =
+ s - sm->per_thread_data[cpu_index].sessions;
+ s->per_user_index = per_user_translation_list_elt -
+ sm->per_thread_data[cpu_index].list_pool;
s->per_user_list_head_index = u->sessions_per_user_list_head_index;
- clib_dlist_addtail (sm->list_pool, s->per_user_list_head_index,
- per_user_translation_list_elt - sm->list_pool);
+ clib_dlist_addtail (sm->per_thread_data[cpu_index].list_pool,
+ s->per_user_list_head_index,
+ per_user_translation_list_elt -
+ sm->per_thread_data[cpu_index].list_pool);
}
s->in2out = *key0;
/* Add to translation hashes */
kv0.key = s->in2out.as_u64;
- kv0.value = s - sm->sessions;
+ kv0.value = s - sm->per_thread_data[cpu_index].sessions;
if (clib_bihash_add_del_8_8 (&sm->in2out, &kv0, 1 /* is_add */))
clib_warning ("in2out key add failed");
kv0.key = s->out2in.as_u64;
- kv0.value = s - sm->sessions;
+ kv0.value = s - sm->per_thread_data[cpu_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 = cpu_index;
+ clib_bihash_add_del_8_8 (&sm->worker_by_out, &kv0, 1);
return next0;
}
u32 rx_fib_index0,
vlib_node_runtime_t * node,
u32 next0,
- f64 now)
+ f64 now,
+ u32 cpu_index)
{
snat_session_key_t key0;
icmp_echo_header_t *echo0;
return next0;
next0 = slow_path (sm, b0, ip0, rx_fib_index0, &key0,
- &s0, node, next0);
+ &s0, node, next0, cpu_index);
if (PREDICT_FALSE (next0 == SNAT_IN2OUT_NEXT_DROP))
return next0;
}
else
- s0 = pool_elt_at_index (sm->sessions, value0.value);
+ s0 = pool_elt_at_index (sm->per_thread_data[cpu_index].sessions,
+ value0.value);
old_addr0 = ip0->src_address.as_u32;
ip0->src_address = s0->out2in.addr;
/* Per-user LRU list maintenance for dynamic translations */
if (!snat_is_session_static (s0))
{
- clib_dlist_remove (sm->list_pool, s0->per_user_index);
- clib_dlist_addtail (sm->list_pool, s0->per_user_list_head_index,
+ clib_dlist_remove (sm->per_thread_data[cpu_index].list_pool,
+ s0->per_user_index);
+ clib_dlist_addtail (sm->per_thread_data[cpu_index].list_pool,
+ s0->per_user_list_head_index,
s0->per_user_index);
}
return next0;
}
+/**
+ * @brief Hairpinning
+ *
+ * Hairpinning allows two endpoints on the internal side of the NAT to
+ * communicate even if they only use each other's external IP addresses
+ * and ports.
+ *
+ * @param sm SNAT main.
+ * @param b0 Vlib buffer.
+ * @param ip0 IP header.
+ * @param udp0 UDP header.
+ * @param tcp0 TCP header.
+ * @param proto0 SNAT protocol.
+ */
+static inline void
+snat_hairpinning (snat_main_t *sm,
+ vlib_buffer_t * b0,
+ ip4_header_t * ip0,
+ udp_header_t * udp0,
+ tcp_header_t * tcp0,
+ u32 proto0)
+{
+ snat_session_key_t key0, sm0;
+ snat_static_mapping_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;
+
+ key0.addr = ip0->dst_address;
+ key0.port = udp0->dst_port;
+ key0.protocol = proto0;
+ 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))
+ {
+ /* or static mappings */
+ if (!snat_static_mapping_match(sm, key0, &sm0, 1))
+ {
+ new_dst_addr0 = sm0.addr.as_u32;
+ new_dst_port0 = sm0.port;
+ 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 = 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;
+ }
+ 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;
+ 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 = tcp0->ports.dst;
+ if (PREDICT_TRUE(new_dst_port0 != old_dst_port0))
+ {
+ if (PREDICT_TRUE(proto0 == SNAT_PROTOCOL_TCP))
+ {
+ tcp0->ports.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;
+ }
+ }
+ }
+}
+
static inline uword
snat_in2out_node_fn_inline (vlib_main_t * vm,
vlib_node_runtime_t * node,
snat_runtime_t * rt = (snat_runtime_t *)node->runtime_data;
f64 now = vlib_time_now (vm);
u32 stats_node_index;
+ u32 cpu_index = os_get_cpu_number ();
stats_node_index = is_slow_path ? snat_in2out_slowpath_node.index :
snat_in2out_node.index;
next0 = next1 = SNAT_IN2OUT_NEXT_LOOKUP;
-#if 0
- /* Formally correct, but we send to slowpath, lookup or drop */
- vnet_get_config_data (&cm->config_main,
- &b0->current_config_index,
- &next0,
- 0 /* sizeof config data */);
-#endif
-
proto0 = ~0;
proto0 = (ip0->protocol == IP_PROTOCOL_UDP)
? SNAT_PROTOCOL_UDP : proto0;
{
next0 = icmp_in2out_slow_path
(sm, b0, ip0, icmp0, sw_if_index0, rx_fib_index0,
- node, next0, now);
+ node, next0, now, cpu_index);
goto trace00;
}
}
goto trace00;
next0 = slow_path (sm, b0, ip0, rx_fib_index0, &key0,
- &s0, node, next0);
+ &s0, node, next0, cpu_index);
if (PREDICT_FALSE (next0 == SNAT_IN2OUT_NEXT_DROP))
goto trace00;
}
}
}
else
- s0 = pool_elt_at_index (sm->sessions, value0.value);
+ s0 = pool_elt_at_index (sm->per_thread_data[cpu_index].sessions,
+ value0.value);
old_addr0 = ip0->src_address.as_u32;
ip0->src_address = s0->out2in.addr;
udp0->checksum = 0;
}
+ /* Hairpinning */
+ snat_hairpinning (sm, b0, ip0, udp0, tcp0, proto0);
+
/* Accounting */
s0->last_heard = now;
s0->total_pkts++;
/* Per-user LRU list maintenance for dynamic translation */
if (!snat_is_session_static (s0))
{
- clib_dlist_remove (sm->list_pool, s0->per_user_index);
- clib_dlist_addtail (sm->list_pool, s0->per_user_list_head_index,
+ clib_dlist_remove (sm->per_thread_data[cpu_index].list_pool,
+ s0->per_user_index);
+ clib_dlist_addtail (sm->per_thread_data[cpu_index].list_pool,
+ s0->per_user_list_head_index,
s0->per_user_index);
}
trace00:
t->next_index = next0;
t->session_index = ~0;
if (s0)
- t->session_index = s0 - sm->sessions;
+ t->session_index = s0 - sm->per_thread_data[cpu_index].sessions;
}
pkts_processed += next0 != SNAT_IN2OUT_NEXT_DROP;
rx_fib_index1 = vec_elt (sm->ip4_main->fib_index_by_sw_if_index,
sw_if_index1);
-#if 0
- vnet_get_config_data (&cm->config_main,
- &b1->current_config_index,
- &next1,
- 0 /* sizeof config data */);
-#endif
-
proto1 = ~0;
proto1 = (ip1->protocol == IP_PROTOCOL_UDP)
? SNAT_PROTOCOL_UDP : proto1;
if (PREDICT_FALSE (proto1 == SNAT_PROTOCOL_ICMP))
{
next1 = icmp_in2out_slow_path
- (sm, b1, ip1, icmp1, sw_if_index1, rx_fib_index1, node, next1,
- now);
+ (sm, b1, ip1, icmp1, sw_if_index1, rx_fib_index1, node,
+ next1, now, cpu_index);
goto trace01;
}
}
goto trace01;
next1 = slow_path (sm, b1, ip1, rx_fib_index1, &key1,
- &s1, node, next1);
+ &s1, node, next1, cpu_index);
if (PREDICT_FALSE (next1 == SNAT_IN2OUT_NEXT_DROP))
goto trace01;
}
}
}
else
- s1 = pool_elt_at_index (sm->sessions, value1.value);
+ s1 = pool_elt_at_index (sm->per_thread_data[cpu_index].sessions,
+ value1.value);
old_addr1 = ip1->src_address.as_u32;
ip1->src_address = s1->out2in.addr;
udp1->checksum = 0;
}
+ /* Hairpinning */
+ snat_hairpinning (sm, b1, ip1, udp1, tcp1, proto1);
+
/* Accounting */
s1->last_heard = now;
s1->total_pkts++;
/* Per-user LRU list maintenance for dynamic translation */
if (!snat_is_session_static (s1))
{
- clib_dlist_remove (sm->list_pool, s1->per_user_index);
- clib_dlist_addtail (sm->list_pool, s1->per_user_list_head_index,
+ clib_dlist_remove (sm->per_thread_data[cpu_index].list_pool,
+ s1->per_user_index);
+ clib_dlist_addtail (sm->per_thread_data[cpu_index].list_pool,
+ s1->per_user_list_head_index,
s1->per_user_index);
}
trace01:
t->next_index = next1;
t->session_index = ~0;
if (s1)
- t->session_index = s1 - sm->sessions;
+ t->session_index = s1 - sm->per_thread_data[cpu_index].sessions;
}
pkts_processed += next1 != SNAT_IN2OUT_NEXT_DROP;
rx_fib_index0 = vec_elt (sm->ip4_main->fib_index_by_sw_if_index,
sw_if_index0);
-
-#if 0
- vnet_get_config_data (&cm->config_main,
- &b0->current_config_index,
- &next0,
- 0 /* sizeof config data */);
-#endif
-
proto0 = ~0;
proto0 = (ip0->protocol == IP_PROTOCOL_UDP)
? SNAT_PROTOCOL_UDP : proto0;
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);
+ (sm, b0, ip0, icmp0, sw_if_index0, rx_fib_index0, node,
+ next0, now, cpu_index);
goto trace0;
}
}
goto trace0;
next0 = slow_path (sm, b0, ip0, rx_fib_index0, &key0,
- &s0, node, next0);
+ &s0, node, next0, cpu_index);
if (PREDICT_FALSE (next0 == SNAT_IN2OUT_NEXT_DROP))
goto trace0;
}
}
}
else
- s0 = pool_elt_at_index (sm->sessions, value0.value);
+ s0 = pool_elt_at_index (sm->per_thread_data[cpu_index].sessions,
+ value0.value);
old_addr0 = ip0->src_address.as_u32;
ip0->src_address = s0->out2in.addr;
udp0->checksum = 0;
}
+ /* Hairpinning */
+ snat_hairpinning (sm, b0, ip0, udp0, tcp0, proto0);
+
/* Accounting */
s0->last_heard = now;
s0->total_pkts++;
/* Per-user LRU list maintenance for dynamic translation */
if (!snat_is_session_static (s0))
{
- clib_dlist_remove (sm->list_pool, s0->per_user_index);
- clib_dlist_addtail (sm->list_pool, s0->per_user_list_head_index,
+ clib_dlist_remove (sm->per_thread_data[cpu_index].list_pool,
+ s0->per_user_index);
+ clib_dlist_addtail (sm->per_thread_data[cpu_index].list_pool,
+ s0->per_user_list_head_index,
s0->per_user_index);
}
t->next_index = next0;
t->session_index = ~0;
if (s0)
- t->session_index = s0 - sm->sessions;
+ t->session_index = s0 - sm->per_thread_data[cpu_index].sessions;
}
pkts_processed += next0 != SNAT_IN2OUT_NEXT_DROP;
VLIB_NODE_FUNCTION_MULTIARCH (snat_in2out_slowpath_node, snat_in2out_slow_path_fn);
+static uword
+snat_in2out_worker_handoff_fn (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * frame)
+{
+ snat_main_t *sm = &snat_main;
+ vlib_thread_main_t *tm = vlib_get_thread_main ();
+ u32 n_left_from, *from, *to_next = 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_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 cpu_index = os_get_cpu_number ();
+
+ ASSERT (vec_len (sm->workers));
+
+ if (PREDICT_FALSE (handoff_queue_elt_by_worker_index == 0))
+ {
+ 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,
+ (vlib_frame_queue_t *) (~0));
+ }
+
+ from = vlib_frame_vector_args (frame);
+ n_left_from = frame->n_vectors;
+
+ while (n_left_from > 0)
+ {
+ u32 bi0;
+ vlib_buffer_t *b0;
+ u32 sw_if_index0;
+ u32 rx_fib_index0;
+ ip4_header_t * ip0;
+ snat_user_key_t key0;
+ clib_bihash_kv_8_8_t kv0, value0;
+ u8 do_handoff;
+
+ bi0 = from[0];
+ from += 1;
+ n_left_from -= 1;
+
+ b0 = vlib_get_buffer (vm, bi0);
+
+ 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);
+
+ ip0 = vlib_buffer_get_current (b0);
+
+ key0.addr = ip0->src_address;
+ key0.fib_index = rx_fib_index0;
+
+ kv0.key = key0.as_u64;
+
+ /* Ever heard of of the "user" before? */
+ if (clib_bihash_search_8_8 (&sm->worker_by_in, &kv0, &value0))
+ {
+ /* No, assign next available worker (RR) */
+ next_worker_index = sm->first_worker_index +
+ sm->workers[sm->next_worker++ % vec_len (sm->workers)];
+
+ /* add non-traslated packets worker lookup */
+ kv0.value = next_worker_index;
+ clib_bihash_add_del_8_8 (&sm->worker_by_in, &kv0, 1);
+ }
+ else
+ next_worker_index = value0.value;
+
+ if (PREDICT_FALSE (next_worker_index != cpu_index))
+ {
+ do_handoff = 1;
+
+ if (next_worker_index != current_worker_index)
+ {
+ if (hf)
+ hf->n_vectors = VLIB_FRAME_SIZE - n_left_to_next_worker;
+
+ hf = vlib_get_worker_handoff_queue_elt (sm->fq_in2out_index,
+ next_worker_index,
+ handoff_queue_elt_by_worker_index);
+
+ n_left_to_next_worker = VLIB_FRAME_SIZE - hf->n_vectors;
+ to_next_worker = &hf->buffer_index[hf->n_vectors];
+ current_worker_index = next_worker_index;
+ }
+
+ /* enqueue to correct worker thread */
+ to_next_worker[0] = bi0;
+ to_next_worker++;
+ n_left_to_next_worker--;
+
+ if (n_left_to_next_worker == 0)
+ {
+ hf->n_vectors = VLIB_FRAME_SIZE;
+ vlib_put_frame_queue_elt (hf);
+ current_worker_index = ~0;
+ handoff_queue_elt_by_worker_index[next_worker_index] = 0;
+ hf = 0;
+ }
+ }
+ else
+ {
+ do_handoff = 0;
+ /* if this is 1st frame */
+ if (!f)
+ {
+ f = vlib_get_frame_to_node (vm, snat_in2out_node.index);
+ to_next = vlib_frame_vector_args (f);
+ }
+
+ to_next[0] = bi0;
+ to_next += 1;
+ f->n_vectors++;
+ }
+
+ if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)
+ && (b0->flags & VLIB_BUFFER_IS_TRACED)))
+ {
+ snat_in2out_worker_handoff_trace_t *t =
+ vlib_add_trace (vm, node, b0, sizeof (*t));
+ t->next_worker_index = next_worker_index;
+ t->do_handoff = do_handoff;
+ }
+ }
+
+ if (f)
+ vlib_put_frame_to_node (vm, snat_in2out_node.index, f);
+
+ if (hf)
+ hf->n_vectors = VLIB_FRAME_SIZE - n_left_to_next_worker;
+
+ /* Ship frames to the worker nodes */
+ for (i = 0; i < vec_len (handoff_queue_elt_by_worker_index); i++)
+ {
+ if (handoff_queue_elt_by_worker_index[i])
+ {
+ hf = handoff_queue_elt_by_worker_index[i];
+ /*
+ * It works better to let the handoff node
+ * rate-adapt, always ship the handoff queue element.
+ */
+ if (1 || hf->n_vectors == hf->last_n_vectors)
+ {
+ vlib_put_frame_queue_elt (hf);
+ handoff_queue_elt_by_worker_index[i] = 0;
+ }
+ else
+ hf->last_n_vectors = hf->n_vectors;
+ }
+ congested_handoff_queue_by_worker_index[i] =
+ (vlib_frame_queue_t *) (~0);
+ }
+ hf = 0;
+ current_worker_index = ~0;
+ return frame->n_vectors;
+}
+
+VLIB_REGISTER_NODE (snat_in2out_worker_handoff_node) = {
+ .function = snat_in2out_worker_handoff_fn,
+ .name = "snat-in2out-worker-handoff",
+ .vector_size = sizeof (u32),
+ .format_trace = format_snat_in2out_worker_handoff_trace,
+ .type = VLIB_NODE_TYPE_INTERNAL,
+
+ .n_next_nodes = 1,
+
+ .next_nodes = {
+ [0] = "error-drop",
+ },
+};
+
+VLIB_NODE_FUNCTION_MULTIARCH (snat_in2out_worker_handoff_node, snat_in2out_worker_handoff_fn);
+
static inline u32 icmp_in2out_static_map (snat_main_t *sm,
vlib_buffer_t * b0,
ip4_header_t * ip0,
}
}
+ /* Hairpinning */
+ snat_hairpinning (sm, b0, ip0, udp0, tcp0, proto0);
+
trace0:
if (PREDICT_FALSE((node->flags & VLIB_NODE_FLAG_TRACE)
&& (b0->flags & VLIB_BUFFER_IS_TRACED)))
Code Review / vpp.git / blobdiff