diff options
Diffstat (limited to 'src/plugins/nat/out2in.c')
| -rwxr-xr-x | src/plugins/nat/out2in.c | 1914 |
1 files changed, 1343 insertions, 571 deletions
diff --git a/src/plugins/nat/out2in.c b/src/plugins/nat/out2in.c index 83e1426a413..80465b071d4 100755 --- a/src/plugins/nat/out2in.c +++ b/src/plugins/nat/out2in.c @@ -104,6 +104,8 @@ vlib_node_registration_t snat_out2in_fast_node; vlib_node_registration_t snat_out2in_worker_handoff_node; vlib_node_registration_t snat_det_out2in_node; vlib_node_registration_t nat44_out2in_reass_node; +vlib_node_registration_t nat44_ed_out2in_node; +vlib_node_registration_t nat44_ed_out2in_slowpath_node; #define foreach_snat_out2in_error \ _(UNSUPPORTED_PROTOCOL, "Unsupported protocol") \ @@ -135,7 +137,6 @@ typedef enum { SNAT_OUT2IN_NEXT_LOOKUP, SNAT_OUT2IN_NEXT_ICMP_ERROR, SNAT_OUT2IN_NEXT_REASS, - SNAT_OUT2IN_NEXT_IN2OUT, SNAT_OUT2IN_N_NEXT, } snat_out2in_next_t; @@ -268,161 +269,6 @@ snat_out2in_error_t icmp_get_key(ip4_header_t *ip0, return -1; /* success */ } -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; - 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->dst_address; - key0.r_addr = ip0->src_address; - key0.l_port = key0.r_port = echo0->identifier; - } - else - { - inner_ip0 = (ip4_header_t *)(echo0+1); - l4_header = ip4_next_header (inner_ip0); - key0.proto = inner_ip0->protocol; - key0.l_addr = inner_ip0->src_address; - key0.r_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.l_port = key0.r_port = inner_echo0->identifier; - break; - case SNAT_PROTOCOL_UDP: - case SNAT_PROTOCOL_TCP: - key0.l_port = ((tcp_udp_header_t*)l4_header)->src_port; - key0.r_port = ((tcp_udp_header_t*)l4_header)->dst_port; - break; - default: - return -1; - } - } - *p_key0 = key0; - return 0; -} - -static int -next_src_nat (snat_main_t * sm, ip4_header_t * ip, u32 proto, u16 src_port, - u32 thread_index) -{ - snat_session_key_t key; - clib_bihash_kv_8_8_t kv, value; - - key.addr = ip->src_address; - key.port = src_port; - key.protocol = proto; - key.fib_index = sm->inside_fib_index; - kv.key = key.as_u64; - - if (!clib_bihash_search_8_8 (&sm->per_thread_data[thread_index].in2out, &kv, - &value)) - return 1; - - return 0; -} - -static void -create_bypass_for_fwd(snat_main_t * sm, ip4_header_t * ip, u32 rx_fib_index, - u32 thread_index) -{ - nat_ed_ses_key_t key; - clib_bihash_kv_16_8_t kv, value; - udp_header_t *udp; - snat_user_t *u; - snat_session_t *s = 0; - snat_main_per_thread_data_t *tsm = &sm->per_thread_data[thread_index]; - f64 now = vlib_time_now (sm->vlib_main); - - if (ip->protocol == IP_PROTOCOL_ICMP) - { - if (icmp_get_ed_key (ip, &key)) - return; - } - else if (ip->protocol == IP_PROTOCOL_UDP || ip->protocol == IP_PROTOCOL_TCP) - { - udp = ip4_next_header(ip); - key.r_addr = ip->src_address; - key.l_addr = ip->dst_address; - key.proto = ip->protocol; - key.l_port = udp->dst_port; - key.r_port = udp->src_port; - } - else - { - key.r_addr = ip->src_address; - key.l_addr = ip->dst_address; - key.proto = ip->protocol; - key.l_port = key.r_port = 0; - } - key.fib_index = 0; - kv.key[0] = key.as_u64[0]; - kv.key[1] = key.as_u64[1]; - - if (!clib_bihash_search_16_8 (&sm->in2out_ed, &kv, &value)) - { - s = pool_elt_at_index (tsm->sessions, value.value); - } - else - { - if (PREDICT_FALSE (maximum_sessions_exceeded(sm, thread_index))) - return; - - u = nat_user_get_or_create (sm, &ip->dst_address, sm->inside_fib_index, thread_index); - if (!u) - { - nat_log_warn ("create NAT user failed"); - return; - } - - s = nat_session_alloc_or_recycle (sm, u, thread_index); - if (!s) - { - nat_log_warn ("create NAT session failed"); - return; - } - - s->ext_host_addr = key.r_addr; - s->ext_host_port = key.r_port; - s->flags |= SNAT_SESSION_FLAG_FWD_BYPASS; - s->outside_address_index = ~0; - s->out2in.addr = key.l_addr; - s->out2in.port = key.l_port; - s->out2in.protocol = ip_proto_to_snat_proto (key.proto); - s->out2in.fib_index = 0; - s->in2out = s->out2in; - user_session_increment (sm, u, 0); - - kv.value = s - tsm->sessions; - if (clib_bihash_add_del_16_8 (&sm->in2out_ed, &kv, 1)) - nat_log_notice ("in2out_ed key add failed"); - } - - if (ip->protocol == IP_PROTOCOL_TCP) - { - tcp_header_t *tcp = ip4_next_header(ip); - if (nat44_set_tcp_session_state_o2i (sm, s, tcp, thread_index)) - return; - } - /* Per-user LRU list maintenance */ - nat44_session_update_lru (sm, s, thread_index); - /* Accounting */ - nat44_session_update_counters (s, now, 0); -} - /** * Get address and port values to be used for ICMP packet translation * and create session if needed @@ -495,12 +341,6 @@ u32 icmp_match_out2in_slow(snat_main_t *sm, vlib_node_runtime_t *node, else { dont_translate = 1; - if (next_src_nat(sm, ip0, key0.protocol, key0.port, thread_index)) - { - next0 = SNAT_OUT2IN_NEXT_IN2OUT; - goto out; - } - create_bypass_for_fwd(sm, ip0, rx_fib_index0, thread_index); goto out; } } @@ -534,34 +374,8 @@ u32 icmp_match_out2in_slow(snat_main_t *sm, vlib_node_runtime_t *node, goto out; } - if (PREDICT_FALSE (value0.value == ~0ULL)) - { - nat_ed_ses_key_t key; - clib_bihash_kv_16_8_t s_kv, s_value; - - key.as_u64[0] = 0; - key.as_u64[1] = 0; - if (icmp_get_ed_key (ip0, &key)) - { - b0->error = node->errors[SNAT_OUT2IN_ERROR_UNSUPPORTED_PROTOCOL]; - next0 = SNAT_OUT2IN_NEXT_DROP; - goto out; - } - key.fib_index = rx_fib_index0; - s_kv.key[0] = key.as_u64[0]; - s_kv.key[1] = key.as_u64[1]; - if (!clib_bihash_search_16_8 (&sm->out2in_ed, &s_kv, &s_value)) - s0 = pool_elt_at_index (sm->per_thread_data[thread_index].sessions, - s_value.value); - else - { - next0 = SNAT_OUT2IN_NEXT_DROP; - goto out; - } - } - else - s0 = pool_elt_at_index (sm->per_thread_data[thread_index].sessions, - value0.value); + s0 = pool_elt_at_index (sm->per_thread_data[thread_index].sessions, + value0.value); } out: @@ -797,293 +611,36 @@ static inline u32 icmp_out2in_slow_path (snat_main_t *sm, return next0; } -static snat_session_t * -snat_out2in_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) +static int +nat_out2in_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; ip_csum_t sum; - nat_ed_ses_key_t key; - snat_session_t * s; - snat_main_per_thread_data_t *tsm = &sm->per_thread_data[thread_index]; - snat_user_t *u; - - old_addr = ip->dst_address.as_u32; - - key.l_addr = ip->dst_address; - key.r_addr = ip->src_address; - key.fib_index = rx_fib_index; - key.proto = ip->protocol; - key.r_port = 0; - key.l_port = 0; - s_kv.key[0] = key.as_u64[0]; - s_kv.key[1] = key.as_u64[1]; - - if (!clib_bihash_search_16_8 (&sm->out2in_ed, &s_kv, &s_value)) - { - s = pool_elt_at_index (tsm->sessions, s_value.value); - new_addr = ip->dst_address.as_u32 = s->in2out.addr.as_u32; - } - else - { - if (PREDICT_FALSE (maximum_sessions_exceeded(sm, thread_index))) - { - b->error = node->errors[SNAT_OUT2IN_ERROR_MAX_SESSIONS_EXCEEDED]; - nat_log_notice ("maximum sessions exceeded"); - return 0; - } - - m_key.addr = ip->dst_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_external, &kv, &value)) - { - b->error = node->errors[SNAT_OUT2IN_ERROR_NO_TRANSLATION]; - return 0; - } - - m = pool_elt_at_index (sm->static_mappings, value.value); - - new_addr = ip->dst_address.as_u32 = m->local_addr.as_u32; - - u = nat_user_get_or_create (sm, &ip->src_address, m->fib_index, - thread_index); - if (!u) - { - nat_log_warn ("create NAT user failed"); - return 0; - } - - /* Create a new session */ - s = nat_session_alloc_or_recycle (sm, u, thread_index); - if (!s) - { - nat_log_warn ("create NAT session failed"); - return 0; - } - - s->ext_host_addr.as_u32 = ip->src_address.as_u32; - s->flags |= SNAT_SESSION_FLAG_UNKNOWN_PROTO; - s->flags |= SNAT_SESSION_FLAG_STATIC_MAPPING; - s->flags |= SNAT_SESSION_FLAG_ENDPOINT_DEPENDENT; - s->outside_address_index = ~0; - s->out2in.addr.as_u32 = old_addr; - s->out2in.fib_index = rx_fib_index; - s->in2out.addr.as_u32 = new_addr; - s->in2out.fib_index = m->fib_index; - s->in2out.port = s->out2in.port = ip->protocol; - user_session_increment (sm, u, 1 /* static */); - - /* Add to lookup tables */ - s_kv.value = s - tsm->sessions; - if (clib_bihash_add_del_16_8 (&sm->out2in_ed, &s_kv, 1)) - nat_log_notice ("out2in key add failed"); - - key.l_addr = ip->dst_address; - key.fib_index = m->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->in2out_ed, &s_kv, 1)) - nat_log_notice ("in2out key add failed"); - } - - /* Update IP checksum */ - sum = ip->checksum; - sum = ip_csum_update (sum, old_addr, new_addr, ip4_header_t, dst_address); - ip->checksum = ip_csum_fold (sum); - - vnet_buffer(b)->sw_if_index[VLIB_TX] = s->in2out.fib_index; - /* Accounting */ - nat44_session_update_counters (s, now, - vlib_buffer_length_in_chain (vm, b)); - /* Per-user LRU list maintenance */ - nat44_session_update_lru (sm, s, thread_index); + m_key.addr = ip->dst_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_external, &kv, &value)) + return 1; - return s; -} - -static snat_session_t * -snat_out2in_lb (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) -{ - nat_ed_ses_key_t key; - clib_bihash_kv_16_8_t s_kv, s_value; - udp_header_t *udp = ip4_next_header (ip); - tcp_header_t *tcp = (tcp_header_t *) udp; - snat_session_t *s = 0; - snat_main_per_thread_data_t *tsm = &sm->per_thread_data[thread_index]; - snat_session_key_t e_key, l_key; - u32 old_addr, new_addr; - u32 proto = ip_proto_to_snat_proto (ip->protocol); - u16 new_port, old_port; - ip_csum_t sum; - snat_user_t *u; - u32 address_index; - snat_session_key_t eh_key; - twice_nat_type_t twice_nat; - u8 lb; + m = pool_elt_at_index (sm->static_mappings, value.value); old_addr = ip->dst_address.as_u32; - - key.l_addr = ip->dst_address; - key.r_addr = ip->src_address; - key.fib_index = rx_fib_index; - key.proto = ip->protocol; - key.r_port = udp->src_port; - key.l_port = udp->dst_port; - s_kv.key[0] = key.as_u64[0]; - s_kv.key[1] = key.as_u64[1]; - - if (!clib_bihash_search_16_8 (&sm->out2in_ed, &s_kv, &s_value)) - { - s = pool_elt_at_index (tsm->sessions, s_value.value); - } - else - { - if (PREDICT_FALSE (maximum_sessions_exceeded(sm, thread_index))) - { - b->error = node->errors[SNAT_OUT2IN_ERROR_MAX_SESSIONS_EXCEEDED]; - nat_log_notice ("maximum sessions exceeded"); - return 0; - } - - e_key.addr = ip->dst_address; - e_key.port = udp->dst_port; - e_key.protocol = proto; - e_key.fib_index = rx_fib_index; - if (snat_static_mapping_match(sm, e_key, &l_key, 1, 0, &twice_nat, &lb)) - return 0; - - u = nat_user_get_or_create (sm, &l_key.addr, l_key.fib_index, - thread_index); - if (!u) - { - nat_log_warn ("create NAT user failed"); - return 0; - } - - s = nat_session_alloc_or_recycle (sm, u, thread_index); - if (!s) - { - nat_log_warn ("create NAT session failed"); - return 0; - } - - s->ext_host_addr.as_u32 = ip->src_address.as_u32; - s->ext_host_port = udp->src_port; - 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 = ~0; - s->out2in = e_key; - s->in2out = l_key; - user_session_increment (sm, u, 1 /* static */); - - /* Add to lookup tables */ - s_kv.value = s - tsm->sessions; - if (clib_bihash_add_del_16_8 (&sm->out2in_ed, &s_kv, 1)) - nat_log_notice ("out2in-ed key add failed"); - - if (twice_nat == TWICE_NAT || - (twice_nat == TWICE_NAT_SELF && - ip->src_address.as_u32 == l_key.addr.as_u32)) - { - eh_key.protocol = proto; - if (snat_alloc_outside_address_and_port (sm->twice_nat_addresses, 0, - thread_index, &eh_key, - &address_index, - sm->port_per_thread, - sm->per_thread_data[thread_index].snat_thread_index)) - { - b->error = node->errors[SNAT_OUT2IN_ERROR_OUT_OF_PORTS]; - return 0; - } - key.r_addr.as_u32 = s->ext_host_nat_addr.as_u32 = eh_key.addr.as_u32; - key.r_port = s->ext_host_nat_port = eh_key.port; - s->flags |= SNAT_SESSION_FLAG_TWICE_NAT; - } - key.l_addr = l_key.addr; - key.fib_index = l_key.fib_index; - key.l_port = l_key.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_ed, &s_kv, 1)) - nat_log_notice ("in2out-ed key add failed"); - } - - new_addr = ip->dst_address.as_u32 = s->in2out.addr.as_u32; - - /* Update IP checksum */ + 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); - if (is_twice_nat_session (s)) - sum = ip_csum_update (sum, ip->src_address.as_u32, - s->ext_host_nat_addr.as_u32, ip4_header_t, - src_address); ip->checksum = ip_csum_fold (sum); - vnet_buffer(b)->sw_if_index[VLIB_TX] = s->in2out.fib_index; - - if (PREDICT_TRUE(proto == SNAT_PROTOCOL_TCP)) - { - old_port = tcp->dst_port; - tcp->dst_port = s->in2out.port; - new_port = tcp->dst_port; - - sum = tcp->checksum; - sum = ip_csum_update (sum, old_addr, new_addr, ip4_header_t, dst_address); - sum = ip_csum_update (sum, old_port, new_port, ip4_header_t, length); - if (is_twice_nat_session (s)) - { - sum = ip_csum_update (sum, ip->src_address.as_u32, - s->ext_host_nat_addr.as_u32, ip4_header_t, - dst_address); - sum = ip_csum_update (sum, tcp->src_port, s->ext_host_nat_port, - ip4_header_t, length); - tcp->src_port = s->ext_host_nat_port; - ip->src_address.as_u32 = s->ext_host_nat_addr.as_u32; - } - tcp->checksum = ip_csum_fold(sum); - if (nat44_set_tcp_session_state_o2i (sm, s, tcp, thread_index)) - return s; - } - else - { - udp->dst_port = s->in2out.port; - if (is_twice_nat_session (s)) - { - udp->src_port = s->ext_host_nat_port; - ip->src_address.as_u32 = s->ext_host_nat_addr.as_u32; - } - udp->checksum = 0; - } - - /* Accounting */ - nat44_session_update_counters (s, now, vlib_buffer_length_in_chain (vm, b)); - /* Per-user LRU list maintenance */ - nat44_session_update_lru (sm, s, thread_index); - - return s; + vnet_buffer(b)->sw_if_index[VLIB_TX] = m->fib_index; + return 0; } static uword @@ -1182,11 +739,14 @@ snat_out2in_node_fn (vlib_main_t * vm, if (PREDICT_FALSE (proto0 == ~0)) { - s0 = snat_out2in_unknown_proto(sm, b0, ip0, rx_fib_index0, - thread_index, now, vm, node); - if (!sm->forwarding_enabled) - if (!s0) - next0 = SNAT_OUT2IN_NEXT_DROP; + if (nat_out2in_sm_unknown_proto(sm, b0, ip0, rx_fib_index0)) + { + if (!sm->forwarding_enabled) + { + b0->error = node->errors[SNAT_OUT2IN_ERROR_UNSUPPORTED_PROTOCOL]; + next0 = SNAT_OUT2IN_NEXT_DROP; + } + } goto trace0; } @@ -1237,16 +797,6 @@ snat_out2in_node_fn (vlib_main_t * vm, next0 = SNAT_OUT2IN_NEXT_DROP; goto trace0; } - else - { - if (next_src_nat(sm, ip0, proto0, udp0->src_port, thread_index)) - { - next0 = SNAT_OUT2IN_NEXT_IN2OUT; - goto trace0; - } - create_bypass_for_fwd(sm, ip0, rx_fib_index0, thread_index); - goto trace0; - } } /* Create session initiated by host from external network */ @@ -1259,22 +809,8 @@ snat_out2in_node_fn (vlib_main_t * vm, } } else - { - if (PREDICT_FALSE (value0.value == ~0ULL)) - { - s0 = snat_out2in_lb(sm, b0, ip0, rx_fib_index0, thread_index, - now, vm, node); - if (!s0) - next0 = SNAT_OUT2IN_NEXT_DROP; - goto trace0; - } - else - { - s0 = pool_elt_at_index ( - sm->per_thread_data[thread_index].sessions, - value0.value); - } - } + s0 = pool_elt_at_index (sm->per_thread_data[thread_index].sessions, + value0.value); old_addr0 = ip0->dst_address.as_u32; ip0->dst_address = s0->in2out.addr; @@ -1355,11 +891,14 @@ snat_out2in_node_fn (vlib_main_t * vm, if (PREDICT_FALSE (proto1 == ~0)) { - s1 = snat_out2in_unknown_proto(sm, b1, ip1, rx_fib_index1, - thread_index, now, vm, node); - if (!sm->forwarding_enabled) - if (!s1) - next1 = SNAT_OUT2IN_NEXT_DROP; + if (nat_out2in_sm_unknown_proto(sm, b1, ip1, rx_fib_index1)) + { + if (!sm->forwarding_enabled) + { + b1->error = node->errors[SNAT_OUT2IN_ERROR_UNSUPPORTED_PROTOCOL]; + next1 = SNAT_OUT2IN_NEXT_DROP; + } + } goto trace1; } @@ -1410,16 +949,6 @@ snat_out2in_node_fn (vlib_main_t * vm, next1 = SNAT_OUT2IN_NEXT_DROP; goto trace1; } - else - { - if (next_src_nat(sm, ip1, proto1, udp1->src_port, thread_index)) - { - next1 = SNAT_OUT2IN_NEXT_IN2OUT; - goto trace1; - } - create_bypass_for_fwd(sm, ip1, rx_fib_index1, thread_index); - goto trace1; - } } /* Create session initiated by host from external network */ @@ -1432,22 +961,8 @@ snat_out2in_node_fn (vlib_main_t * vm, } } else - { - if (PREDICT_FALSE (value1.value == ~0ULL)) - { - s1 = snat_out2in_lb(sm, b1, ip1, rx_fib_index1, thread_index, - now, vm, node); - if (!s1) - next1 = SNAT_OUT2IN_NEXT_DROP; - goto trace1; - } - else - { - s1 = pool_elt_at_index ( - sm->per_thread_data[thread_index].sessions, - value1.value); - } - } + s1 = pool_elt_at_index (sm->per_thread_data[thread_index].sessions, + value1.value); old_addr1 = ip1->dst_address.as_u32; ip1->dst_address = s1->in2out.addr; @@ -1554,11 +1069,14 @@ snat_out2in_node_fn (vlib_main_t * vm, if (PREDICT_FALSE (proto0 == ~0)) { - s0 = snat_out2in_unknown_proto(sm, b0, ip0, rx_fib_index0, - thread_index, now, vm, node); - if (!sm->forwarding_enabled) - if (!s0) - next0 = SNAT_OUT2IN_NEXT_DROP; + if (nat_out2in_sm_unknown_proto(sm, b0, ip0, rx_fib_index0)) + { + if (!sm->forwarding_enabled) + { + b0->error = node->errors[SNAT_OUT2IN_ERROR_UNSUPPORTED_PROTOCOL]; + next0 = SNAT_OUT2IN_NEXT_DROP; + } + } goto trace00; } @@ -1619,16 +1137,6 @@ snat_out2in_node_fn (vlib_main_t * vm, next0 = SNAT_OUT2IN_NEXT_DROP; goto trace00; } - else - { - if (next_src_nat(sm, ip0, proto0, udp0->src_port, thread_index)) - { - next0 = SNAT_OUT2IN_NEXT_IN2OUT; - goto trace00; - } - create_bypass_for_fwd(sm, ip0, rx_fib_index0, thread_index); - goto trace00; - } } /* Create session initiated by host from external network */ @@ -1641,22 +1149,8 @@ snat_out2in_node_fn (vlib_main_t * vm, } } else - { - if (PREDICT_FALSE (value0.value == ~0ULL)) - { - s0 = snat_out2in_lb(sm, b0, ip0, rx_fib_index0, thread_index, - now, vm, node); - if (!s0) - next0 = SNAT_OUT2IN_NEXT_DROP; - goto trace00; - } - else - { - s0 = pool_elt_at_index ( - sm->per_thread_data[thread_index].sessions, - value0.value); - } - } + s0 = pool_elt_at_index (sm->per_thread_data[thread_index].sessions, + value0.value); old_addr0 = ip0->dst_address.as_u32; ip0->dst_address = s0->in2out.addr; @@ -1748,7 +1242,6 @@ VLIB_REGISTER_NODE (snat_out2in_node) = { [SNAT_OUT2IN_NEXT_LOOKUP] = "ip4-lookup", [SNAT_OUT2IN_NEXT_ICMP_ERROR] = "ip4-icmp-error", [SNAT_OUT2IN_NEXT_REASS] = "nat44-out2in-reass", - [SNAT_OUT2IN_NEXT_IN2OUT] = "nat44-in2out", }, }; VLIB_NODE_FUNCTION_MULTIARCH (snat_out2in_node, snat_out2in_node_fn); @@ -1869,18 +1362,8 @@ nat44_out2in_reass_node_fn (vlib_main_t * vm, { b0->error = node->errors[SNAT_OUT2IN_ERROR_NO_TRANSLATION]; next0 = SNAT_OUT2IN_NEXT_DROP; - goto trace0; - } - else - { - if (next_src_nat(sm, ip0, proto0, udp0->src_port, thread_index)) - { - next0 = SNAT_OUT2IN_NEXT_IN2OUT; - goto trace0; - } - create_bypass_for_fwd(sm, ip0, rx_fib_index0, thread_index); - goto trace0; } + goto trace0; } /* Create session initiated by host from external network */ @@ -2045,12 +1528,1303 @@ VLIB_REGISTER_NODE (nat44_out2in_reass_node) = { [SNAT_OUT2IN_NEXT_LOOKUP] = "ip4-lookup", [SNAT_OUT2IN_NEXT_ICMP_ERROR] = "ip4-icmp-error", [SNAT_OUT2IN_NEXT_REASS] = "nat44-out2in-reass", - [SNAT_OUT2IN_NEXT_IN2OUT] = "nat44-in2out", }, }; VLIB_NODE_FUNCTION_MULTIARCH (nat44_out2in_reass_node, nat44_out2in_reass_node_fn); +/*******************************/ +/*** endpoint-dependent mode ***/ +/*******************************/ +typedef enum { + NAT44_ED_OUT2IN_NEXT_DROP, + NAT44_ED_OUT2IN_NEXT_LOOKUP, + NAT44_ED_OUT2IN_NEXT_ICMP_ERROR, + NAT44_ED_OUT2IN_NEXT_IN2OUT, + NAT44_ED_OUT2IN_NEXT_SLOW_PATH, + NAT44_ED_OUT2IN_N_NEXT, +} nat44_ed_out2in_next_t; + +typedef struct { + u32 sw_if_index; + u32 next_index; + u32 session_index; + u32 is_slow_path; +} nat44_ed_out2in_trace_t; + +static u8 * +format_nat44_ed_out2in_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_ed_out2in_trace_t *t = va_arg (*args, nat44_ed_out2in_trace_t *); + char * tag; + + tag = t->is_slow_path ? "NAT44_OUT2IN_SLOW_PATH" : "NAT44_OUT2IN_FAST_PATH"; + + s = format (s, "%s: sw_if_index %d, next index %d, session %d", tag, + t->sw_if_index, t->next_index, t->session_index); + + return s; +} + +static snat_session_t * +create_session_for_static_mapping_ed (snat_main_t * sm, + vlib_buffer_t *b, + snat_session_key_t l_key, + snat_session_key_t e_key, + vlib_node_runtime_t * node, + u32 thread_index, + twice_nat_type_t twice_nat, + u8 is_lb) +{ + snat_session_t *s; + snat_user_t *u; + ip4_header_t *ip; + udp_header_t *udp; + snat_main_per_thread_data_t *tsm = &sm->per_thread_data[thread_index]; + clib_bihash_kv_16_8_t kv; + snat_session_key_t eh_key; + u32 address_index; + + if (PREDICT_FALSE (maximum_sessions_exceeded(sm, thread_index))) + { + b->error = node->errors[SNAT_OUT2IN_ERROR_MAX_SESSIONS_EXCEEDED]; + nat_log_notice ("maximum sessions exceeded"); + return 0; + } + + u = nat_user_get_or_create (sm, &l_key.addr, l_key.fib_index, thread_index); + if (!u) + { + nat_log_warn ("create NAT user failed"); + return 0; + } + + s = nat_session_alloc_or_recycle (sm, u, thread_index); + if (!s) + { + nat_log_warn ("create NAT session failed"); + return 0; + } + + ip = vlib_buffer_get_current (b); + udp = ip4_next_header (ip); + + s->ext_host_addr.as_u32 = ip->src_address.as_u32; + s->ext_host_port = e_key.protocol == SNAT_PROTOCOL_ICMP ? 0 : udp->src_port; + s->flags |= SNAT_SESSION_FLAG_STATIC_MAPPING; + if (is_lb) + s->flags |= SNAT_SESSION_FLAG_LOAD_BALANCING; + s->flags |= SNAT_SESSION_FLAG_ENDPOINT_DEPENDENT; + s->outside_address_index = ~0; + s->out2in = e_key; + s->in2out = l_key; + s->in2out.protocol = s->out2in.protocol; + user_session_increment (sm, u, 1); + + /* Add to lookup tables */ + make_ed_kv (&kv, &e_key.addr, &s->ext_host_addr, ip->protocol, + e_key.fib_index, e_key.port, s->ext_host_port); + kv.value = s - tsm->sessions; + if (clib_bihash_add_del_16_8 (&tsm->out2in_ed, &kv, 1)) + nat_log_notice ("out2in-ed key add failed"); + + if (twice_nat == TWICE_NAT || (twice_nat == TWICE_NAT_SELF && + ip->src_address.as_u32 == l_key.addr.as_u32)) + { + eh_key.protocol = e_key.protocol; + if (snat_alloc_outside_address_and_port (sm->twice_nat_addresses, 0, + thread_index, &eh_key, + &address_index, + sm->port_per_thread, + tsm->snat_thread_index)) + { + b->error = node->errors[SNAT_OUT2IN_ERROR_OUT_OF_PORTS]; + nat44_delete_session (sm, s, thread_index); + if (clib_bihash_add_del_16_8 (&tsm->out2in_ed, &kv, 0)) + nat_log_notice ("out2in-ed key del failed"); + return 0; + } + s->ext_host_nat_addr.as_u32 = eh_key.addr.as_u32; + s->ext_host_nat_port = eh_key.port; + s->flags |= SNAT_SESSION_FLAG_TWICE_NAT; + make_ed_kv (&kv, &l_key.addr, &s->ext_host_nat_addr, ip->protocol, + l_key.fib_index, l_key.port, s->ext_host_nat_port); + } + else + { + make_ed_kv (&kv, &l_key.addr, &s->ext_host_addr, ip->protocol, + l_key.fib_index, l_key.port, s->ext_host_port); + } + kv.value = s - tsm->sessions; + if (clib_bihash_add_del_16_8 (&tsm->in2out_ed, &kv, 1)) + nat_log_notice ("in2out-ed key add failed"); + + return s; +} + +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; + 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->dst_address; + key0.r_addr = ip0->src_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.l_addr = inner_ip0->src_address; + key0.r_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.l_port = inner_echo0->identifier; + key0.r_port = 0; + break; + case SNAT_PROTOCOL_UDP: + case SNAT_PROTOCOL_TCP: + key0.l_port = ((tcp_udp_header_t*)l4_header)->src_port; + key0.r_port = ((tcp_udp_header_t*)l4_header)->dst_port; + break; + default: + return -1; + } + } + *p_key0 = key0; + return 0; +} + +static int +next_src_nat (snat_main_t * sm, ip4_header_t * ip, u8 proto, u16 src_port, + u16 dst_port, u32 thread_index) +{ + clib_bihash_kv_16_8_t kv, value; + snat_main_per_thread_data_t *tsm = &sm->per_thread_data[thread_index]; + + make_ed_kv (&kv, &ip->src_address, &ip->dst_address, proto, + sm->inside_fib_index, src_port, dst_port); + if (!clib_bihash_search_16_8 (&tsm->in2out_ed, &kv, &value)) + return 1; + + return 0; +} + +static void +create_bypass_for_fwd(snat_main_t * sm, ip4_header_t * ip, u32 rx_fib_index, + u32 thread_index) +{ + nat_ed_ses_key_t key; + clib_bihash_kv_16_8_t kv, value; + udp_header_t *udp; + snat_user_t *u; + snat_session_t *s = 0; + snat_main_per_thread_data_t *tsm = &sm->per_thread_data[thread_index]; + f64 now = vlib_time_now (sm->vlib_main); + + if (ip->protocol == IP_PROTOCOL_ICMP) + { + if (icmp_get_ed_key (ip, &key)) + return; + } + else if (ip->protocol == IP_PROTOCOL_UDP || ip->protocol == IP_PROTOCOL_TCP) + { + udp = ip4_next_header(ip); + key.r_addr = ip->src_address; + key.l_addr = ip->dst_address; + key.proto = ip->protocol; + key.l_port = udp->dst_port; + key.r_port = udp->src_port; + } + else + { + key.r_addr = ip->src_address; + key.l_addr = ip->dst_address; + key.proto = ip->protocol; + key.l_port = key.r_port = 0; + } + key.fib_index = 0; + 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)) + { + s = pool_elt_at_index (tsm->sessions, value.value); + } + else + { + if (PREDICT_FALSE (maximum_sessions_exceeded(sm, thread_index))) + return; + + u = nat_user_get_or_create (sm, &ip->dst_address, sm->inside_fib_index, + thread_index); + if (!u) + { + nat_log_warn ("create NAT user failed"); + return; + } + + s = nat_session_alloc_or_recycle (sm, u, thread_index); + if (!s) + { + nat_log_warn ("create NAT session failed"); + return; + } + + s->ext_host_addr = key.r_addr; + s->ext_host_port = key.r_port; + s->flags |= SNAT_SESSION_FLAG_FWD_BYPASS; + s->outside_address_index = ~0; + s->out2in.addr = key.l_addr; + s->out2in.port = key.l_port; + s->out2in.protocol = ip_proto_to_snat_proto (key.proto); + s->out2in.fib_index = 0; + s->in2out = s->out2in; + user_session_increment (sm, u, 0); + + kv.value = s - tsm->sessions; + if (clib_bihash_add_del_16_8 (&tsm->in2out_ed, &kv, 1)) + nat_log_notice ("in2out_ed key add failed"); + } + + if (ip->protocol == IP_PROTOCOL_TCP) + { + tcp_header_t *tcp = ip4_next_header(ip); + if (nat44_set_tcp_session_state_o2i (sm, s, tcp, thread_index)) + return; + } + + /* Per-user LRU list maintenance */ + nat44_session_update_lru (sm, s, thread_index); + /* Accounting */ + nat44_session_update_counters (s, now, 0); +} + +u32 +icmp_match_out2in_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) +{ + u32 next = ~0, sw_if_index, rx_fib_index; + icmp46_header_t *icmp; + nat_ed_ses_key_t key; + clib_bihash_kv_16_8_t kv, value; + snat_main_per_thread_data_t *tsm = &sm->per_thread_data[thread_index]; + snat_session_t *s = 0; + u8 dont_translate = 0, is_addr_only; + snat_session_key_t e_key, l_key; + + 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); + + if (icmp_get_ed_key (ip, &key)) + { + b->error = node->errors[SNAT_OUT2IN_ERROR_UNSUPPORTED_PROTOCOL]; + next = SNAT_OUT2IN_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->out2in_ed, &kv, &value)) + { + /* Try to match static mapping */ + e_key.addr = ip->dst_address; + e_key.port = key.l_port; + e_key.protocol = ip_proto_to_snat_proto (key.proto); + e_key.fib_index = rx_fib_index; + if (snat_static_mapping_match(sm, e_key, &l_key, 1, &is_addr_only, 0, 0)) + { + if (!sm->forwarding_enabled) + { + /* Don't NAT packet aimed at the intfc address */ + if (PREDICT_FALSE(is_interface_addr(sm, node, sw_if_index, + ip->dst_address.as_u32))) + { + dont_translate = 1; + goto out; + } + b->error = node->errors[SNAT_OUT2IN_ERROR_NO_TRANSLATION]; + next = NAT44_ED_OUT2IN_NEXT_DROP; + goto out; + } + else + { + dont_translate = 1; + if (next_src_nat(sm, ip, key.proto, key.l_port, key.r_port, thread_index)) + { + next = NAT44_ED_OUT2IN_NEXT_IN2OUT; + goto out; + } + create_bypass_for_fwd(sm, ip, rx_fib_index, thread_index); + goto out; + } + } + + if (PREDICT_FALSE(icmp->type != ICMP4_echo_reply && + (icmp->type != ICMP4_echo_request || !is_addr_only))) + { + b->error = node->errors[SNAT_OUT2IN_ERROR_BAD_ICMP_TYPE]; + next = NAT44_ED_OUT2IN_NEXT_DROP; + goto out; + } + + /* Create session initiated by host from external network */ + s = create_session_for_static_mapping_ed(sm, b, l_key, e_key, node, + thread_index, 0, 0); + + if (!s) + { + next = NAT44_ED_OUT2IN_NEXT_DROP; + goto out; + } + } + else + { + if (PREDICT_FALSE(icmp->type != ICMP4_echo_reply && + icmp->type != ICMP4_echo_request && + !icmp_is_error_message (icmp))) + { + b->error = node->errors[SNAT_OUT2IN_ERROR_BAD_ICMP_TYPE]; + next = SNAT_OUT2IN_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->in2out; + *p_dont_translate = dont_translate; + if (d) + *(snat_session_t**)d = s; + return next; +} + +static snat_session_t * +nat44_ed_out2in_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; + ip_csum_t sum; + snat_session_t * s; + snat_main_per_thread_data_t *tsm = &sm->per_thread_data[thread_index]; + snat_user_t *u; + + old_addr = ip->dst_address.as_u32; + + make_ed_kv (&s_kv, &ip->dst_address, &ip->src_address, ip->protocol, + rx_fib_index, 0, 0); + + if (!clib_bihash_search_16_8 (&tsm->out2in_ed, &s_kv, &s_value)) + { + s = pool_elt_at_index (tsm->sessions, s_value.value); + new_addr = ip->dst_address.as_u32 = s->in2out.addr.as_u32; + } + else + { + if (PREDICT_FALSE (maximum_sessions_exceeded(sm, thread_index))) + { + b->error = node->errors[SNAT_OUT2IN_ERROR_MAX_SESSIONS_EXCEEDED]; + nat_log_notice ("maximum sessions exceeded"); + return 0; + } + + make_sm_kv (&kv, &ip->dst_address, 0, rx_fib_index, 0); + if (clib_bihash_search_8_8 (&sm->static_mapping_by_external, &kv, &value)) + { + b->error = node->errors[SNAT_OUT2IN_ERROR_NO_TRANSLATION]; + return 0; + } + + m = pool_elt_at_index (sm->static_mappings, value.value); + + new_addr = ip->dst_address.as_u32 = m->local_addr.as_u32; + + u = nat_user_get_or_create (sm, &ip->src_address, m->fib_index, + thread_index); + if (!u) + { + nat_log_warn ("create NAT user failed"); + return 0; + } + + /* Create a new session */ + s = nat_session_alloc_or_recycle (sm, u, thread_index); + if (!s) + { + nat_log_warn ("create NAT session failed"); + return 0; + } + + s->ext_host_addr.as_u32 = ip->src_address.as_u32; + s->flags |= SNAT_SESSION_FLAG_UNKNOWN_PROTO; + s->flags |= SNAT_SESSION_FLAG_STATIC_MAPPING; + s->flags |= SNAT_SESSION_FLAG_ENDPOINT_DEPENDENT; + s->outside_address_index = ~0; + s->out2in.addr.as_u32 = old_addr; + s->out2in.fib_index = rx_fib_index; + s->in2out.addr.as_u32 = new_addr; + s->in2out.fib_index = m->fib_index; + s->in2out.port = s->out2in.port = ip->protocol; + user_session_increment (sm, u, 1); + + /* Add to lookup tables */ + 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"); + + make_ed_kv (&s_kv, &ip->dst_address, &ip->src_address, ip->protocol, + m->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"); + } + + /* Update IP checksum */ + sum = ip->checksum; + sum = ip_csum_update (sum, old_addr, new_addr, ip4_header_t, dst_address); + ip->checksum = ip_csum_fold (sum); + + vnet_buffer(b)->sw_if_index[VLIB_TX] = s->in2out.fib_index; + + /* Accounting */ + nat44_session_update_counters (s, now, + vlib_buffer_length_in_chain (vm, b)); + /* Per-user LRU list maintenance */ + nat44_session_update_lru (sm, s, thread_index); + + return s; +} + +static inline uword +nat44_ed_out2in_node_fn_inline (vlib_main_t * vm, + vlib_node_runtime_t * node, + vlib_frame_t * frame, int is_slow_path) +{ + u32 n_left_from, *from, *to_next, pkts_processed = 0, stats_node_index; + nat44_ed_out2in_next_t next_index; + snat_main_t *sm = &snat_main; + f64 now = vlib_time_now (vm); + u32 thread_index = vlib_get_thread_index (); + snat_main_per_thread_data_t *tsm = &sm->per_thread_data[thread_index]; + + stats_node_index = is_slow_path ? nat44_ed_out2in_slowpath_node.index : + nat44_ed_out2in_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, proto0, old_addr0, new_addr0; + u32 next1, sw_if_index1, rx_fib_index1, proto1, old_addr1, new_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; + snat_session_key_t e_key0, l_key0, e_key1, l_key1; + u8 is_lb0, is_lb1; + twice_nat_type_t twice_nat0, twice_nat1; + + /* 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 = NAT44_ED_OUT2IN_NEXT_LOOKUP; + vnet_buffer (b0)->snat.flags = 0; + ip0 = vlib_buffer_get_current (b0); + + 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 = NAT44_ED_OUT2IN_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_out2in_unknown_proto(sm, b0, ip0, rx_fib_index0, + thread_index, now, vm, node); + if (!sm->forwarding_enabled) + { + if (!s0) + next0 = NAT44_ED_OUT2IN_NEXT_DROP; + goto trace00; + } + } + + if (PREDICT_FALSE (proto0 == SNAT_PROTOCOL_ICMP)) + { + next0 = icmp_out2in_slow_path + (sm, b0, ip0, icmp0, sw_if_index0, rx_fib_index0, node, + next0, now, thread_index, &s0); + goto trace00; + } + } + else + { + if (PREDICT_FALSE (proto0 == ~0 || proto0 == SNAT_PROTOCOL_ICMP)) + { + next0 = NAT44_ED_OUT2IN_NEXT_SLOW_PATH; + goto trace00; + } + + if (ip4_is_fragment (ip0)) + { + b0->error = node->errors[SNAT_OUT2IN_ERROR_DROP_FRAGMENT]; + next0 = NAT44_ED_OUT2IN_NEXT_DROP; + goto trace00; + } + } + + make_ed_kv (&kv0, &ip0->dst_address, &ip0->src_address, ip0->protocol, + rx_fib_index0, udp0->dst_port, udp0->src_port); + + if (clib_bihash_search_16_8 (&tsm->out2in_ed, &kv0, &value0)) + { + if (is_slow_path) + { + /* Try to match static mapping by external address and port, + destination address and port in packet */ + e_key0.addr = ip0->dst_address; + e_key0.port = udp0->dst_port; + e_key0.protocol = proto0; + e_key0.fib_index = rx_fib_index0; + if (snat_static_mapping_match(sm, e_key0, &l_key0, 1, 0, + &twice_nat0, &is_lb0)) + { + /* + * Send DHCP packets to the ipv4 stack, or we won't + * be able to use dhcp client on the outside interface + */ + if (PREDICT_FALSE (proto0 == SNAT_PROTOCOL_UDP + && (udp0->dst_port == + clib_host_to_net_u16(UDP_DST_PORT_dhcp_to_client)))) + { + vnet_feature_next + (vnet_buffer (b0)->sw_if_index[VLIB_RX], &next0, b0); + goto trace00; + } + + if (!sm->forwarding_enabled) + { + b0->error = node->errors[SNAT_OUT2IN_ERROR_NO_TRANSLATION]; + next0 = NAT44_ED_OUT2IN_NEXT_DROP; + } + else + { + if (next_src_nat(sm, ip0, ip0->protocol, + udp0->src_port, udp0->dst_port, + thread_index)) + { + next0 = NAT44_ED_OUT2IN_NEXT_IN2OUT; + goto trace00; + } + create_bypass_for_fwd(sm, ip0, rx_fib_index0, + thread_index); + } + goto trace00; + } + + /* Create session initiated by host from external network */ + s0 = create_session_for_static_mapping_ed(sm, b0, l_key0, + e_key0, node, + thread_index, + twice_nat0, is_lb0); + + if (!s0) + { + next0 = NAT44_ED_OUT2IN_NEXT_DROP; + goto trace00; + } + } + else + { + next0 = NAT44_ED_OUT2IN_NEXT_SLOW_PATH; + goto trace00; + } + } + else + { + s0 = pool_elt_at_index (tsm->sessions, value0.value); + } + + old_addr0 = ip0->dst_address.as_u32; + new_addr0 = ip0->dst_address.as_u32 = s0->in2out.addr.as_u32; + vnet_buffer(b0)->sw_if_index[VLIB_TX] = s0->in2out.fib_index; + + sum0 = ip0->checksum; + sum0 = ip_csum_update (sum0, old_addr0, new_addr0, ip4_header_t, + dst_address); + if (PREDICT_FALSE (is_twice_nat_session (s0))) + sum0 = ip_csum_update (sum0, ip0->src_address.as_u32, + s0->ext_host_nat_addr.as_u32, ip4_header_t, + src_address); + ip0->checksum = ip_csum_fold (sum0); + + if (PREDICT_TRUE (proto0 == SNAT_PROTOCOL_TCP)) + { + old_port0 = tcp0->dst_port; + new_port0 = tcp0->dst_port = s0->in2out.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 (is_twice_nat_session (s0)) + { + sum0 = ip_csum_update (sum0, ip0->src_address.as_u32, + s0->ext_host_nat_addr.as_u32, + ip4_header_t, dst_address); + sum0 = ip_csum_update (sum0, tcp0->src_port, + s0->ext_host_nat_port, ip4_header_t, + length); + tcp0->src_port = s0->ext_host_nat_port; + ip0->src_address.as_u32 = s0->ext_host_nat_addr.as_u32; + } + tcp0->checksum = ip_csum_fold(sum0); + if (nat44_set_tcp_session_state_o2i (sm, s0, tcp0, thread_index)) + goto trace00; + } + else + { + udp0->dst_port = s0->in2out.port; + if (is_twice_nat_session (s0)) + { + udp0->src_port = s0->ext_host_nat_port; + ip0->src_address.as_u32 = s0->ext_host_nat_addr.as_u32; + } + 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); + + trace00: + if (PREDICT_FALSE((node->flags & VLIB_NODE_FLAG_TRACE) + && (b0->flags & VLIB_BUFFER_IS_TRACED))) + { + nat44_ed_out2in_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 != NAT44_ED_OUT2IN_NEXT_DROP; + + next1 = NAT44_ED_OUT2IN_NEXT_LOOKUP; + vnet_buffer (b1)->snat.flags = 0; + ip1 = vlib_buffer_get_current (b1); + + 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 = NAT44_ED_OUT2IN_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_out2in_unknown_proto(sm, b1, ip1, rx_fib_index1, + thread_index, now, vm, node); + if (!sm->forwarding_enabled) + { + if (!s1) + next1 = NAT44_ED_OUT2IN_NEXT_DROP; + goto trace01; + } + } + + if (PREDICT_FALSE (proto1 == SNAT_PROTOCOL_ICMP)) + { + next1 = icmp_out2in_slow_path + (sm, b1, ip1, icmp1, sw_if_index1, rx_fib_index1, node, + next1, now, thread_index, &s1); + goto trace01; + } + } + else + { + if (PREDICT_FALSE (proto1 == ~0 || proto1 == SNAT_PROTOCOL_ICMP)) + { + next1 = NAT44_ED_OUT2IN_NEXT_SLOW_PATH; + goto trace01; + } + + if (ip4_is_fragment (ip1)) + { + b1->error = node->errors[SNAT_OUT2IN_ERROR_DROP_FRAGMENT]; + next1 = NAT44_ED_OUT2IN_NEXT_DROP; + goto trace01; + } + } + + make_ed_kv (&kv1, &ip1->dst_address, &ip1->src_address, ip1->protocol, + rx_fib_index1, udp1->dst_port, udp1->src_port); + + if (clib_bihash_search_16_8 (&tsm->out2in_ed, &kv1, &value1)) + { + if (is_slow_path) + { + /* Try to match static mapping by external address and port, + destination address and port in packet */ + e_key1.addr = ip1->dst_address; + e_key1.port = udp1->dst_port; + e_key1.protocol = proto1; + e_key1.fib_index = rx_fib_index1; + if (snat_static_mapping_match(sm, e_key1, &l_key1, 1, 0, + &twice_nat1, &is_lb1)) + { + /* + * Send DHCP packets to the ipv4 stack, or we won't + * be able to use dhcp client on the outside interface + */ + if (PREDICT_FALSE (proto1 == SNAT_PROTOCOL_UDP + && (udp1->dst_port == + clib_host_to_net_u16(UDP_DST_PORT_dhcp_to_client)))) + { + vnet_feature_next + (vnet_buffer (b1)->sw_if_index[VLIB_RX], &next1, b1); + goto trace01; + } + + if (!sm->forwarding_enabled) + { + b1->error = node->errors[SNAT_OUT2IN_ERROR_NO_TRANSLATION]; + next1 = NAT44_ED_OUT2IN_NEXT_DROP; + } + else + { + if (next_src_nat(sm, ip1, ip1->protocol, + udp1->src_port, udp1->dst_port, + thread_index)) + { + next1 = NAT44_ED_OUT2IN_NEXT_IN2OUT; + goto trace01; + } + create_bypass_for_fwd(sm, ip1, rx_fib_index1, + thread_index); + } + goto trace01; + } + + /* Create session initiated by host from external network */ + s1 = create_session_for_static_mapping_ed(sm, b1, l_key1, + e_key1, node, + thread_index, + twice_nat1, is_lb1); + + if (!s1) + { + next1 = NAT44_ED_OUT2IN_NEXT_DROP; + goto trace01; + } + } + else + { + next1 = NAT44_ED_OUT2IN_NEXT_SLOW_PATH; + goto trace01; + } + } + else + { + s1 = pool_elt_at_index (tsm->sessions, value1.value); + } + + old_addr1 = ip1->dst_address.as_u32; + new_addr1 = ip1->dst_address.as_u32 = s1->in2out.addr.as_u32; + vnet_buffer(b1)->sw_if_index[VLIB_TX] = s1->in2out.fib_index; + + sum1 = ip1->checksum; + sum1 = ip_csum_update (sum1, old_addr1, new_addr1, ip4_header_t, + dst_address); + if (PREDICT_FALSE (is_twice_nat_session (s1))) + sum1 = ip_csum_update (sum1, ip1->src_address.as_u32, + s1->ext_host_nat_addr.as_u32, ip4_header_t, + src_address); + ip1->checksum = ip_csum_fold (sum1); + + if (PREDICT_TRUE (proto1 == SNAT_PROTOCOL_TCP)) + { + old_port1 = tcp1->dst_port; + new_port1 = tcp1->dst_port = s1->in2out.port; + + sum1 = tcp1->checksum; + 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 (is_twice_nat_session (s1)) + { + sum1 = ip_csum_update (sum1, ip1->src_address.as_u32, + s1->ext_host_nat_addr.as_u32, + ip4_header_t, dst_address); + sum1 = ip_csum_update (sum1, tcp1->src_port, + s1->ext_host_nat_port, ip4_header_t, + length); + tcp1->src_port = s1->ext_host_nat_port; + ip1->src_address.as_u32 = s1->ext_host_nat_addr.as_u32; + } + tcp1->checksum = ip_csum_fold(sum1); + if (nat44_set_tcp_session_state_o2i (sm, s1, tcp1, thread_index)) + goto trace01; + } + else + { + udp1->dst_port = s1->in2out.port; + if (is_twice_nat_session (s1)) + { + udp1->src_port = s1->ext_host_nat_port; + ip1->src_address.as_u32 = s1->ext_host_nat_addr.as_u32; + } + 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))) + { + nat44_ed_out2in_trace_t *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 - tsm->sessions; + } + + pkts_processed += next1 != NAT44_ED_OUT2IN_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, sw_if_index0, rx_fib_index0, proto0, old_addr0, new_addr0; + u16 old_port0, new_port0; + ip4_header_t *ip0; + udp_header_t *udp0; + tcp_header_t *tcp0; + icmp46_header_t * icmp0; + snat_session_t *s0 = 0; + clib_bihash_kv_16_8_t kv0, value0; + ip_csum_t sum0; + snat_session_key_t e_key0, l_key0; + u8 is_lb0; + twice_nat_type_t twice_nat0; + + /* 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 = NAT44_ED_OUT2IN_NEXT_LOOKUP; + vnet_buffer (b0)->snat.flags = 0; + ip0 = vlib_buffer_get_current (b0); + + 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 = NAT44_ED_OUT2IN_NEXT_ICMP_ERROR; + 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); + + if (is_slow_path) + { + if (PREDICT_FALSE (proto0 == ~0)) + { + s0 = nat44_ed_out2in_unknown_proto(sm, b0, ip0, rx_fib_index0, + thread_index, now, vm, node); + if (!sm->forwarding_enabled) + { + if (!s0) + next0 = NAT44_ED_OUT2IN_NEXT_DROP; + goto trace0; + } + } + + if (PREDICT_FALSE (proto0 == SNAT_PROTOCOL_ICMP)) + { + next0 = icmp_out2in_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 = NAT44_ED_OUT2IN_NEXT_SLOW_PATH; + goto trace0; + } + + if (ip4_is_fragment (ip0)) + { + b0->error = node->errors[SNAT_OUT2IN_ERROR_DROP_FRAGMENT]; + next0 = NAT44_ED_OUT2IN_NEXT_DROP; + goto trace0; + } + } + + make_ed_kv (&kv0, &ip0->dst_address, &ip0->src_address, ip0->protocol, + rx_fib_index0, udp0->dst_port, udp0->src_port); + + if (clib_bihash_search_16_8 (&tsm->out2in_ed, &kv0, &value0)) + { + if (is_slow_path) + { + /* Try to match static mapping by external address and port, + destination address and port in packet */ + e_key0.addr = ip0->dst_address; + e_key0.port = udp0->dst_port; + e_key0.protocol = proto0; + e_key0.fib_index = rx_fib_index0; + if (snat_static_mapping_match(sm, e_key0, &l_key0, 1, 0, + &twice_nat0, &is_lb0)) + { + /* + * Send DHCP packets to the ipv4 stack, or we won't + * be able to use dhcp client on the outside interface + */ + if (PREDICT_FALSE (proto0 == SNAT_PROTOCOL_UDP + && (udp0->dst_port == + clib_host_to_net_u16(UDP_DST_PORT_dhcp_to_client)))) + { + vnet_feature_next + (vnet_buffer (b0)->sw_if_index[VLIB_RX], &next0, b0); + goto trace0; + } + + if (!sm->forwarding_enabled) + { + b0->error = node->errors[SNAT_OUT2IN_ERROR_NO_TRANSLATION]; + next0 = NAT44_ED_OUT2IN_NEXT_DROP; + } + else + { + if (next_src_nat(sm, ip0, ip0->protocol, + udp0->src_port, udp0->dst_port, + thread_index)) + { + next0 = NAT44_ED_OUT2IN_NEXT_IN2OUT; + goto trace0; + } + create_bypass_for_fwd(sm, ip0, rx_fib_index0, + thread_index); + } + goto trace0; + } + + /* Create session initiated by host from external network */ + s0 = create_session_for_static_mapping_ed(sm, b0, l_key0, + e_key0, node, + thread_index, + twice_nat0, is_lb0); + + if (!s0) + { + next0 = NAT44_ED_OUT2IN_NEXT_DROP; + goto trace0; + } + } + else + { + next0 = NAT44_ED_OUT2IN_NEXT_SLOW_PATH; + goto trace0; + } + } + else + { + s0 = pool_elt_at_index (tsm->sessions, value0.value); + } + + old_addr0 = ip0->dst_address.as_u32; + new_addr0 = ip0->dst_address.as_u32 = s0->in2out.addr.as_u32; + vnet_buffer(b0)->sw_if_index[VLIB_TX] = s0->in2out.fib_index; + + sum0 = ip0->checksum; + sum0 = ip_csum_update (sum0, old_addr0, new_addr0, ip4_header_t, + dst_address); + if (PREDICT_FALSE (is_twice_nat_session (s0))) + sum0 = ip_csum_update (sum0, ip0->src_address.as_u32, + s0->ext_host_nat_addr.as_u32, ip4_header_t, + src_address); + ip0->checksum = ip_csum_fold (sum0); + + if (PREDICT_TRUE (proto0 == SNAT_PROTOCOL_TCP)) + { + old_port0 = tcp0->dst_port; + new_port0 = tcp0->dst_port = s0->in2out.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 (is_twice_nat_session (s0)) + { + sum0 = ip_csum_update (sum0, ip0->src_address.as_u32, + s0->ext_host_nat_addr.as_u32, + ip4_header_t, dst_address); + sum0 = ip_csum_update (sum0, tcp0->src_port, + s0->ext_host_nat_port, ip4_header_t, + length); + tcp0->src_port = s0->ext_host_nat_port; + ip0->src_address.as_u32 = s0->ext_host_nat_addr.as_u32; + } + tcp0->checksum = ip_csum_fold(sum0); + if (nat44_set_tcp_session_state_o2i (sm, s0, tcp0, thread_index)) + goto trace0; + } + else + { + udp0->dst_port = s0->in2out.port; + if (is_twice_nat_session (s0)) + { + udp0->src_port = s0->ext_host_nat_port; + ip0->src_address.as_u32 = s0->ext_host_nat_addr.as_u32; + } + 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))) + { + nat44_ed_out2in_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 != NAT44_ED_OUT2IN_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_OUT2IN_ERROR_OUT2IN_PACKETS, + pkts_processed); + return frame->n_vectors; +} + +static uword +nat44_ed_out2in_fast_path_fn (vlib_main_t * vm, + vlib_node_runtime_t * node, + vlib_frame_t * frame) +{ + return nat44_ed_out2in_node_fn_inline (vm, node, frame, 0); +} + +VLIB_REGISTER_NODE (nat44_ed_out2in_node) = { + .function = nat44_ed_out2in_fast_path_fn, + .name = "nat44-ed-out2in", + .vector_size = sizeof (u32), + .format_trace = format_nat44_ed_out2in_trace, + .type = VLIB_NODE_TYPE_INTERNAL, + + .n_errors = ARRAY_LEN(snat_out2in_error_strings), + .error_strings = snat_out2in_error_strings, + + .runtime_data_bytes = sizeof (snat_runtime_t), + + .n_next_nodes = NAT44_ED_OUT2IN_N_NEXT, + + /* edit / add dispositions here */ + .next_nodes = { + [NAT44_ED_OUT2IN_NEXT_DROP] = "error-drop", + [NAT44_ED_OUT2IN_NEXT_LOOKUP] = "ip4-lookup", + [NAT44_ED_OUT2IN_NEXT_SLOW_PATH] = "nat44-ed-out2in-slowpath", + [NAT44_ED_OUT2IN_NEXT_ICMP_ERROR] = "ip4-icmp-error", + [NAT44_ED_OUT2IN_NEXT_IN2OUT] = "nat44-ed-in2out", + }, +}; + +VLIB_NODE_FUNCTION_MULTIARCH (nat44_ed_out2in_node, nat44_ed_out2in_fast_path_fn); + +static uword +nat44_ed_out2in_slow_path_fn (vlib_main_t * vm, + vlib_node_runtime_t * node, + vlib_frame_t * frame) +{ + return nat44_ed_out2in_node_fn_inline (vm, node, frame, 1); +} + +VLIB_REGISTER_NODE (nat44_ed_out2in_slowpath_node) = { + .function = nat44_ed_out2in_slow_path_fn, + .name = "nat44-ed-out2in-slowpath", + .vector_size = sizeof (u32), + .format_trace = format_nat44_ed_out2in_trace, + .type = VLIB_NODE_TYPE_INTERNAL, + + .n_errors = ARRAY_LEN(snat_out2in_error_strings), + .error_strings = snat_out2in_error_strings, + + .runtime_data_bytes = sizeof (snat_runtime_t), + + .n_next_nodes = NAT44_ED_OUT2IN_N_NEXT, + + /* edit / add dispositions here */ + .next_nodes = { + [NAT44_ED_OUT2IN_NEXT_DROP] = "error-drop", + [NAT44_ED_OUT2IN_NEXT_LOOKUP] = "ip4-lookup", + [NAT44_ED_OUT2IN_NEXT_SLOW_PATH] = "nat44-ed-out2in-slowpath", + [NAT44_ED_OUT2IN_NEXT_ICMP_ERROR] = "ip4-icmp-error", + [NAT44_ED_OUT2IN_NEXT_IN2OUT] = "nat44-ed-in2out", + }, +}; + +VLIB_NODE_FUNCTION_MULTIARCH (nat44_ed_out2in_slowpath_node, + nat44_ed_out2in_slow_path_fn); + /**************************/ /*** deterministic mode ***/ /**************************/ @@ -2535,7 +3309,6 @@ VLIB_REGISTER_NODE (snat_det_out2in_node) = { [SNAT_OUT2IN_NEXT_LOOKUP] = "ip4-lookup", [SNAT_OUT2IN_NEXT_ICMP_ERROR] = "ip4-icmp-error", [SNAT_OUT2IN_NEXT_REASS] = "nat44-out2in-reass", - [SNAT_OUT2IN_NEXT_IN2OUT] = "nat44-in2out", }, }; VLIB_NODE_FUNCTION_MULTIARCH (snat_det_out2in_node, snat_det_out2in_node_fn); @@ -3058,7 +3831,6 @@ VLIB_REGISTER_NODE (snat_out2in_fast_node) = { [SNAT_OUT2IN_NEXT_DROP] = "error-drop", [SNAT_OUT2IN_NEXT_ICMP_ERROR] = "ip4-icmp-error", [SNAT_OUT2IN_NEXT_REASS] = "nat44-out2in-reass", - [SNAT_OUT2IN_NEXT_IN2OUT] = "nat44-in2out", }, }; VLIB_NODE_FUNCTION_MULTIARCH (snat_out2in_fast_node, snat_out2in_fast_node_fn); |