X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=src%2Fplugins%2Fnat%2Fout2in_ed.c;h=e1eda3208e32eb774babeaeebb2fca5de95d8591;hb=85bee7548bc5a360851d92807dae6d4159b68314;hp=06e72f31a1b76c41f8c5bdc92f36b5a0e24cba7d;hpb=aaed170828dfdb3d62295b76fd617f794dc76b3f;p=vpp.git diff --git a/src/plugins/nat/out2in_ed.c b/src/plugins/nat/out2in_ed.c index 06e72f31a1b..e1eda3208e3 100644 --- a/src/plugins/nat/out2in_ed.c +++ b/src/plugins/nat/out2in_ed.c @@ -27,55 +27,17 @@ #include #include #include -#include #include +#include #include #include -#define foreach_nat_out2in_ed_error \ -_(UNSUPPORTED_PROTOCOL, "unsupported protocol") \ -_(OUT2IN_PACKETS, "good out2in packets processed") \ -_(OUT_OF_PORTS, "out of ports") \ -_(BAD_ICMP_TYPE, "unsupported ICMP type") \ -_(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")\ -_(NON_SYN, "non-SYN packet try to create session") \ -_(TCP_PACKETS, "TCP packets") \ -_(UDP_PACKETS, "UDP packets") \ -_(ICMP_PACKETS, "ICMP packets") \ -_(OTHER_PACKETS, "other protocol packets") \ -_(FRAGMENTS, "fragments") \ -_(CACHED_FRAGMENTS, "cached fragments") \ -_(PROCESSED_FRAGMENTS, "processed fragments") - -typedef enum -{ -#define _(sym,str) NAT_OUT2IN_ED_ERROR_##sym, - foreach_nat_out2in_ed_error -#undef _ - NAT_OUT2IN_ED_N_ERROR, -} nat_out2in_ed_error_t; - static char *nat_out2in_ed_error_strings[] = { #define _(sym,string) string, foreach_nat_out2in_ed_error #undef _ }; -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_NEXT_REASS, - NAT44_ED_OUT2IN_N_NEXT, -} nat44_ed_out2in_next_t; - typedef struct { u32 sw_if_index; @@ -112,7 +74,7 @@ icmp_out2in_ed_slow_path (snat_main_t * sm, vlib_buffer_t * b0, next0 = icmp_out2in (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 != NAT44_ED_OUT2IN_NEXT_DROP && s0)) + if (PREDICT_TRUE (next0 != NAT_NEXT_DROP && s0)) { /* Accounting */ nat44_session_update_counters (s0, now, @@ -167,7 +129,17 @@ nat44_o2i_ed_is_idle_session_cb (clib_bihash_kv_16_8_t * kv, void *arg) ed_kv.key[0] = ed_key.as_u64[0]; ed_kv.key[1] = ed_key.as_u64[1]; if (clib_bihash_add_del_16_8 (&tsm->in2out_ed, &ed_kv, 0)) - nat_log_warn ("in2out_ed key del failed"); + nat_elog_warn ("in2out_ed key del failed"); + + ed_bihash_kv_t bihash_key; + clib_memset (&bihash_key, 0, sizeof (bihash_key)); + bihash_key.k.dst_address = s->ext_host_addr.as_u32; + bihash_key.k.dst_port = s->ext_host_port; + bihash_key.k.src_address = s->out2in.addr.as_u32; + bihash_key.k.src_port = s->out2in.port; + bihash_key.k.protocol = s->out2in.protocol; + clib_bihash_add_del_16_8 (&sm->ed_ext_ports, &bihash_key.kv, + 0 /* is_add */ ); if (snat_is_unk_proto_session (s)) goto delete; @@ -241,25 +213,27 @@ create_session_for_static_mapping_ed (snat_main_t * sm, snat_session_key_t eh_key; nat44_is_idle_session_ctx_t ctx; - if (PREDICT_FALSE (maximum_sessions_exceeded (sm, thread_index))) + if (PREDICT_FALSE (nat44_maximum_sessions_exceeded (sm, thread_index))) { b->error = node->errors[NAT_OUT2IN_ED_ERROR_MAX_SESSIONS_EXCEEDED]; - nat_log_notice ("maximum sessions exceeded"); + nat_elog_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"); + b->error = node->errors[NAT_OUT2IN_ED_ERROR_MAX_SESSIONS_EXCEEDED]; + nat_elog_warn ("create NAT user failed"); return 0; } s = nat_ed_session_alloc (sm, u, thread_index, now); if (!s) { + b->error = node->errors[NAT_OUT2IN_ED_ERROR_MAX_USER_SESS_EXCEEDED]; nat44_delete_user_with_no_session (sm, u, thread_index); - nat_log_warn ("create NAT session failed"); + nat_elog_warn ("create NAT session failed"); return 0; } @@ -288,7 +262,7 @@ create_session_for_static_mapping_ed (snat_main_t * sm, 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"); + nat_elog_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)) @@ -302,7 +276,7 @@ create_session_for_static_mapping_ed (snat_main_t * sm, b->error = node->errors[NAT_OUT2IN_ED_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"); + nat_elog_notice ("out2in-ed key del failed"); return 0; } s->ext_host_nat_addr.as_u32 = eh_key.addr.as_u32; @@ -320,7 +294,7 @@ create_session_for_static_mapping_ed (snat_main_t * sm, 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"); + nat_elog_notice ("in2out-ed key add failed"); snat_ipfix_logging_nat44_ses_create (thread_index, s->in2out.addr.as_u32, @@ -345,55 +319,6 @@ create_session_for_static_mapping_ed (snat_main_t * sm, 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, u32 rx_fib_index) @@ -410,8 +335,8 @@ next_src_nat (snat_main_t * sm, ip4_header_t * ip, u8 proto, u16 src_port, } static void -create_bypass_for_fwd (snat_main_t * sm, ip4_header_t * ip, u32 rx_fib_index, - u32 thread_index) +create_bypass_for_fwd (snat_main_t * sm, vlib_buffer_t * b, 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; @@ -423,7 +348,7 @@ create_bypass_for_fwd (snat_main_t * sm, ip4_header_t * ip, u32 rx_fib_index, if (ip->protocol == IP_PROTOCOL_ICMP) { - if (icmp_get_ed_key (ip, &key)) + if (get_icmp_o2i_ed_key (b, ip, &key)) return; } else if (ip->protocol == IP_PROTOCOL_UDP || ip->protocol == IP_PROTOCOL_TCP) @@ -454,14 +379,14 @@ create_bypass_for_fwd (snat_main_t * sm, ip4_header_t * ip, u32 rx_fib_index, { u32 proto; - if (PREDICT_FALSE (maximum_sessions_exceeded (sm, thread_index))) + if (PREDICT_FALSE (nat44_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"); + nat_elog_warn ("create NAT user failed"); return; } @@ -469,7 +394,7 @@ create_bypass_for_fwd (snat_main_t * sm, ip4_header_t * ip, u32 rx_fib_index, if (!s) { nat44_delete_user_with_no_session (sm, u, thread_index); - nat_log_warn ("create NAT session failed"); + nat_elog_warn ("create NAT session failed"); return; } @@ -492,13 +417,15 @@ create_bypass_for_fwd (snat_main_t * sm, ip4_header_t * ip, u32 rx_fib_index, 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"); + nat_elog_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)) + if (nat44_set_tcp_session_state_o2i + (sm, now, s, tcp->flags, tcp->ack_number, tcp->seq_number, + thread_index)) return; } @@ -508,6 +435,18 @@ create_bypass_for_fwd (snat_main_t * sm, ip4_header_t * ip, u32 rx_fib_index, nat44_session_update_lru (sm, s, thread_index); } +static inline void +create_bypass_for_fwd_worker (snat_main_t * sm, vlib_buffer_t * b, + ip4_header_t * ip, u32 rx_fib_index) +{ + ip4_header_t ip_wkr = { + .src_address = ip->dst_address, + }; + u32 thread_index = sm->worker_in2out_cb (&ip_wkr, rx_fib_index, 0); + + create_bypass_for_fwd (sm, b, ip, rx_fib_index, thread_index); +} + #ifndef CLIB_MARCH_VARIANT u32 icmp_match_out2in_ed (snat_main_t * sm, vlib_node_runtime_t * node, @@ -516,7 +455,6 @@ icmp_match_out2in_ed (snat_main_t * sm, vlib_node_runtime_t * node, 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]; @@ -524,14 +462,13 @@ icmp_match_out2in_ed (snat_main_t * sm, vlib_node_runtime_t * node, u8 dont_translate = 0, is_addr_only, identity_nat; 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)) + if (get_icmp_o2i_ed_key (b, ip, &key)) { b->error = node->errors[NAT_OUT2IN_ED_ERROR_UNSUPPORTED_PROTOCOL]; - next = NAT44_ED_OUT2IN_NEXT_DROP; + next = NAT_NEXT_DROP; goto out; } key.fib_index = rx_fib_index; @@ -558,7 +495,7 @@ icmp_match_out2in_ed (snat_main_t * sm, vlib_node_runtime_t * node, goto out; } b->error = node->errors[NAT_OUT2IN_ED_ERROR_NO_TRANSLATION]; - next = NAT44_ED_OUT2IN_NEXT_DROP; + next = NAT_NEXT_DROP; goto out; } else @@ -567,19 +504,25 @@ icmp_match_out2in_ed (snat_main_t * sm, vlib_node_runtime_t * node, if (next_src_nat (sm, ip, key.proto, key.l_port, key.r_port, thread_index, rx_fib_index)) { - next = NAT44_ED_OUT2IN_NEXT_IN2OUT; + next = NAT_NEXT_IN2OUT_ED_FAST_PATH; goto out; } - create_bypass_for_fwd (sm, ip, rx_fib_index, thread_index); + if (sm->num_workers > 1) + create_bypass_for_fwd_worker (sm, b, ip, rx_fib_index); + else + create_bypass_for_fwd (sm, b, ip, rx_fib_index, thread_index); goto out; } } - if (PREDICT_FALSE (icmp->type != ICMP4_echo_reply && - (icmp->type != ICMP4_echo_request || !is_addr_only))) + if (PREDICT_FALSE + (vnet_buffer (b)->ip.reass.icmp_type_or_tcp_flags != + ICMP4_echo_reply + && (vnet_buffer (b)->ip.reass.icmp_type_or_tcp_flags != + ICMP4_echo_request || !is_addr_only))) { b->error = node->errors[NAT_OUT2IN_ED_ERROR_BAD_ICMP_TYPE]; - next = NAT44_ED_OUT2IN_NEXT_DROP; + next = NAT_NEXT_DROP; goto out; } @@ -597,18 +540,22 @@ icmp_match_out2in_ed (snat_main_t * sm, vlib_node_runtime_t * node, if (!s) { - next = NAT44_ED_OUT2IN_NEXT_DROP; + next = NAT_NEXT_DROP; goto out; } } else { - if (PREDICT_FALSE (icmp->type != ICMP4_echo_reply && - icmp->type != ICMP4_echo_request && - !icmp_is_error_message (icmp))) + if (PREDICT_FALSE + (vnet_buffer (b)->ip.reass.icmp_type_or_tcp_flags != + ICMP4_echo_reply + && vnet_buffer (b)->ip.reass.icmp_type_or_tcp_flags != + ICMP4_echo_request + && !icmp_type_is_error_message (vnet_buffer (b)->ip. + reass.icmp_type_or_tcp_flags))) { b->error = node->errors[NAT_OUT2IN_ED_ERROR_BAD_ICMP_TYPE]; - next = NAT44_ED_OUT2IN_NEXT_DROP; + next = NAT_NEXT_DROP; goto out; } @@ -656,10 +603,10 @@ nat44_ed_out2in_unknown_proto (snat_main_t * sm, } else { - if (PREDICT_FALSE (maximum_sessions_exceeded (sm, thread_index))) + if (PREDICT_FALSE (nat44_maximum_sessions_exceeded (sm, thread_index))) { b->error = node->errors[NAT_OUT2IN_ED_ERROR_MAX_SESSIONS_EXCEEDED]; - nat_log_notice ("maximum sessions exceeded"); + nat_elog_notice ("maximum sessions exceeded"); return 0; } @@ -679,7 +626,8 @@ nat44_ed_out2in_unknown_proto (snat_main_t * sm, thread_index); if (!u) { - nat_log_warn ("create NAT user failed"); + b->error = node->errors[NAT_OUT2IN_ED_ERROR_CANNOT_CREATE_USER]; + nat_elog_warn ("create NAT user failed"); return 0; } @@ -687,8 +635,9 @@ nat44_ed_out2in_unknown_proto (snat_main_t * sm, s = nat_ed_session_alloc (sm, u, thread_index, now); if (!s) { + b->error = node->errors[NAT_OUT2IN_ED_ERROR_MAX_USER_SESS_EXCEEDED]; nat44_delete_user_with_no_session (sm, u, thread_index); - nat_log_warn ("create NAT session failed"); + nat_elog_warn ("create NAT session failed"); return 0; } @@ -706,13 +655,13 @@ nat44_ed_out2in_unknown_proto (snat_main_t * sm, /* 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"); + nat_elog_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"); + nat_elog_notice ("in2out key add failed"); } /* Update IP checksum */ @@ -732,21 +681,21 @@ nat44_ed_out2in_unknown_proto (snat_main_t * sm, } 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) +nat44_ed_out2in_fast_path_node_fn_inline (vlib_main_t * vm, + vlib_node_runtime_t * node, + vlib_frame_t * frame) { u32 n_left_from, *from, *to_next, pkts_processed = 0, stats_node_index; - nat44_ed_out2in_next_t next_index; + nat_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]; u32 tcp_packets = 0, udp_packets = 0, icmp_packets = 0, other_packets = 0, fragments = 0; + u32 tcp_closed_drops = 0; - stats_node_index = is_slow_path ? sm->ed_out2in_slowpath_node_index : - sm->ed_out2in_node_index; + stats_node_index = sm->ed_out2in_node_index; from = vlib_frame_vector_args (frame); n_left_from = frame->n_vectors; @@ -758,53 +707,31 @@ nat44_ed_out2in_node_fn_inline (vlib_main_t * vm, vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); - while (n_left_from >= 4 && n_left_to_next >= 2) + while (n_left_from > 0 && n_left_to_next > 0) { - u32 bi0, bi1; - vlib_buffer_t *b0, *b1; + u32 bi0; + vlib_buffer_t *b0; 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; - lb_nat_type_t lb_nat0, lb_nat1; - twice_nat_type_t twice_nat0, twice_nat1; - u8 identity_nat0, identity_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; + u16 old_port0, new_port0; + ip4_header_t *ip0; + udp_header_t *udp0; + tcp_header_t *tcp0; + 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]; + to_next[0] = bi0; + from += 1; + to_next += 1; + n_left_from -= 1; + n_left_to_next -= 1; b0 = vlib_get_buffer (vm, bi0); - b1 = vlib_get_buffer (vm, bi1); + next0 = nat_buffer_opaque (b0)->arc_next; - next0 = NAT44_ED_OUT2IN_NEXT_LOOKUP; vnet_buffer (b0)->snat.flags = 0; ip0 = vlib_buffer_get_current (b0); @@ -819,149 +746,70 @@ nat44_ed_out2in_node_fn_inline (vlib_main_t * vm, 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; + next0 = NAT_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)) { - if (PREDICT_FALSE (proto0 == ~0)) - { - s0 = - nat44_ed_out2in_unknown_proto (sm, b0, ip0, rx_fib_index0, - thread_index, now, vm, - node); - other_packets++; - if (!sm->forwarding_enabled) - { - if (!s0) - next0 = NAT44_ED_OUT2IN_NEXT_DROP; - goto trace00; - } - } - - if (PREDICT_FALSE (proto0 == SNAT_PROTOCOL_ICMP)) - { - next0 = icmp_out2in_ed_slow_path - (sm, b0, ip0, icmp0, sw_if_index0, rx_fib_index0, node, - next0, now, thread_index, &s0); - icmp_packets++; - goto trace00; - } + next0 = NAT_NEXT_OUT2IN_ED_SLOW_PATH; + goto trace0; } - else - { - if (PREDICT_FALSE (proto0 == ~0)) - { - next0 = NAT44_ED_OUT2IN_NEXT_SLOW_PATH; - goto trace00; - } - - if (ip4_is_fragment (ip0)) - { - next0 = NAT44_ED_OUT2IN_NEXT_REASS; - fragments++; - goto trace00; - } - if (PREDICT_FALSE (proto0 == SNAT_PROTOCOL_ICMP)) - { - next0 = NAT44_ED_OUT2IN_NEXT_SLOW_PATH; - goto trace00; - } + if (PREDICT_FALSE (proto0 == SNAT_PROTOCOL_ICMP)) + { + next0 = NAT_NEXT_OUT2IN_ED_SLOW_PATH; + goto trace0; } make_ed_kv (&kv0, &ip0->dst_address, &ip0->src_address, - ip0->protocol, rx_fib_index0, udp0->dst_port, - udp0->src_port); + ip0->protocol, rx_fib_index0, + vnet_buffer (b0)->ip.reass.l4_dst_port, + vnet_buffer (b0)->ip.reass.l4_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, &lb_nat0, - &ip0->src_address, - &identity_nat0)) - { - /* - * 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 (&next0, b0); - goto trace00; - } - - if (!sm->forwarding_enabled) - { - b0->error = - node->errors[NAT_OUT2IN_ED_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, rx_fib_index0)) - { - next0 = NAT44_ED_OUT2IN_NEXT_IN2OUT; - goto trace00; - } - create_bypass_for_fwd (sm, ip0, rx_fib_index0, - thread_index); - } - goto trace00; - } - - if (PREDICT_FALSE (identity_nat0)) - goto trace00; - - if ((proto0 == SNAT_PROTOCOL_TCP) && !tcp_is_init (tcp0)) - { - b0->error = node->errors[NAT_OUT2IN_ED_ERROR_NON_SYN]; - next0 = NAT44_ED_OUT2IN_NEXT_DROP; - 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, - lb_nat0, now); + next0 = NAT_NEXT_OUT2IN_ED_SLOW_PATH; + goto trace0; + } + s0 = pool_elt_at_index (tsm->sessions, value0.value); - if (!s0) - { - next0 = NAT44_ED_OUT2IN_NEXT_DROP; - goto trace00; - } + if (s0->tcp_close_timestamp) + { + if (now >= s0->tcp_close_timestamp) + { + // session is closed, go slow path + next0 = NAT_NEXT_OUT2IN_ED_SLOW_PATH; } else { - next0 = NAT44_ED_OUT2IN_NEXT_SLOW_PATH; - goto trace00; + // session in transitory timeout, drop + b0->error = node->errors[NAT_OUT2IN_ED_ERROR_TCP_CLOSED]; + ++tcp_closed_drops; + next0 = NAT_NEXT_DROP; } + goto trace0; } - else + + // drop if session expired + u64 sess_timeout_time; + sess_timeout_time = s0->last_heard + + (f64) nat44_session_get_timeout (sm, s0); + if (now >= sess_timeout_time) { - s0 = pool_elt_at_index (tsm->sessions, value0.value); + // delete session + nat_free_session_data (sm, s0, thread_index, 0); + nat44_delete_session (sm, s0, thread_index); + + // session no longer exists, go slow path + next0 = NAT_NEXT_OUT2IN_ED_SLOW_PATH; + goto trace0; } + // old_addr0 = ip0->dst_address.as_u32; new_addr0 = ip0->dst_address.as_u32 = s0->in2out.addr.as_u32; @@ -976,42 +824,80 @@ nat44_ed_out2in_node_fn_inline (vlib_main_t * vm, src_address); ip0->checksum = ip_csum_fold (sum0); + old_port0 = vnet_buffer (b0)->ip.reass.l4_dst_port; + if (PREDICT_TRUE (proto0 == SNAT_PROTOCOL_TCP)) { - old_port0 = tcp0->dst_port; - new_port0 = tcp0->dst_port = s0->in2out.port; - - sum0 = tcp0->checksum; + if (!vnet_buffer (b0)->ip.reass.is_non_first_fragment) + { + new_port0 = udp0->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, + vnet_buffer (b0)->ip. + reass.l4_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); + } + tcp_packets++; + if (nat44_set_tcp_session_state_o2i + (sm, now, s0, + vnet_buffer (b0)->ip.reass.icmp_type_or_tcp_flags, + vnet_buffer (b0)->ip.reass.tcp_ack_number, + vnet_buffer (b0)->ip.reass.tcp_seq_number, thread_index)) + goto trace0; + } + else if (!vnet_buffer (b0)->ip.reass.is_non_first_fragment + && udp0->checksum) + { + new_port0 = udp0->dst_port = s0->in2out.port; + sum0 = udp0->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)) + 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, 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; + sum0 = + ip_csum_update (sum0, + vnet_buffer (b0)->ip.reass.l4_src_port, + s0->ext_host_nat_port, ip4_header_t, + length); + udp0->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); - tcp_packets++; - if (nat44_set_tcp_session_state_o2i - (sm, s0, tcp0, thread_index)) - goto trace00; + udp0->checksum = ip_csum_fold (sum0); + udp_packets++; } else { - udp0->dst_port = s0->in2out.port; - if (is_twice_nat_session (s0)) + if (!vnet_buffer (b0)->ip.reass.is_non_first_fragment) { - udp0->src_port = s0->ext_host_nat_port; - ip0->src_address.as_u32 = s0->ext_host_nat_addr.as_u32; + new_port0 = udp0->dst_port = s0->in2out.port; + if (PREDICT_FALSE (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; udp_packets++; } @@ -1022,261 +908,75 @@ nat44_ed_out2in_node_fn_inline (vlib_main_t * vm, /* Per-user LRU list maintenance */ nat44_session_update_lru (sm, s0, thread_index); - trace00: + 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; + t->is_slow_path = 0; + if (s0) t->session_index = s0 - tsm->sessions; - } - - pkts_processed += next0 == NAT44_ED_OUT2IN_NEXT_LOOKUP; - - 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); - other_packets++; - if (!sm->forwarding_enabled) - { - if (!s1) - next1 = NAT44_ED_OUT2IN_NEXT_DROP; - goto trace01; - } - } - - if (PREDICT_FALSE (proto1 == SNAT_PROTOCOL_ICMP)) - { - next1 = icmp_out2in_ed_slow_path - (sm, b1, ip1, icmp1, sw_if_index1, rx_fib_index1, node, - next1, now, thread_index, &s1); - icmp_packets++; - goto trace01; - } - } - else - { - if (PREDICT_FALSE (proto1 == ~0)) - { - next1 = NAT44_ED_OUT2IN_NEXT_SLOW_PATH; - goto trace01; - } - - if (ip4_is_fragment (ip1)) - { - next1 = NAT44_ED_OUT2IN_NEXT_REASS; - fragments++; - goto trace01; - } - - if (PREDICT_FALSE (proto1 == SNAT_PROTOCOL_ICMP)) - { - next1 = NAT44_ED_OUT2IN_NEXT_SLOW_PATH; - 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, &lb_nat1, - &ip1->src_address, - &identity_nat1)) - { - /* - * 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 (&next1, b1); - goto trace01; - } - - if (!sm->forwarding_enabled) - { - b1->error = - node->errors[NAT_OUT2IN_ED_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, rx_fib_index1)) - { - next1 = NAT44_ED_OUT2IN_NEXT_IN2OUT; - goto trace01; - } - create_bypass_for_fwd (sm, ip1, rx_fib_index1, - thread_index); - } - goto trace01; - } - - if (PREDICT_FALSE (identity_nat1)) - goto trace01; - - if ((proto1 == SNAT_PROTOCOL_TCP) && !tcp_is_init (tcp1)) - { - b1->error = node->errors[NAT_OUT2IN_ED_ERROR_NON_SYN]; - next1 = NAT44_ED_OUT2IN_NEXT_DROP; - 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, - lb_nat1, now); - - 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); + t->session_index = ~0; } - 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; + pkts_processed += next0 == nat_buffer_opaque (b0)->arc_next; + /* 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); + } - 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); + vlib_put_next_frame (vm, node, next_index, n_left_to_next); + } - if (PREDICT_TRUE (proto1 == SNAT_PROTOCOL_TCP)) - { - old_port1 = tcp1->dst_port; - new_port1 = tcp1->dst_port = s1->in2out.port; + vlib_node_increment_counter (vm, stats_node_index, + NAT_OUT2IN_ED_ERROR_OUT2IN_PACKETS, + pkts_processed); + vlib_node_increment_counter (vm, stats_node_index, + NAT_OUT2IN_ED_ERROR_TCP_PACKETS, tcp_packets); + vlib_node_increment_counter (vm, stats_node_index, + NAT_OUT2IN_ED_ERROR_UDP_PACKETS, udp_packets); + vlib_node_increment_counter (vm, stats_node_index, + NAT_OUT2IN_ED_ERROR_ICMP_PACKETS, + icmp_packets); + vlib_node_increment_counter (vm, stats_node_index, + NAT_OUT2IN_ED_ERROR_OTHER_PACKETS, + other_packets); + vlib_node_increment_counter (vm, stats_node_index, + NAT_OUT2IN_ED_ERROR_FRAGMENTS, fragments); + return frame->n_vectors; +} - 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); - tcp_packets++; - 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; - udp_packets++; - } +static inline uword +nat44_ed_out2in_slow_path_node_fn_inline (vlib_main_t * vm, + vlib_node_runtime_t * node, + vlib_frame_t * frame) +{ + u32 n_left_from, *from, *to_next, pkts_processed = 0, stats_node_index; + nat_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]; + u32 tcp_packets = 0, udp_packets = 0, icmp_packets = 0, other_packets = + 0, fragments = 0; - /* Accounting */ - nat44_session_update_counters (s1, now, - vlib_buffer_length_in_chain (vm, b1), - thread_index); - /* Per-user LRU list maintenance */ - nat44_session_update_lru (sm, s1, thread_index); + stats_node_index = sm->ed_out2in_slowpath_node_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; - } + from = vlib_frame_vector_args (frame); + n_left_from = frame->n_vectors; + next_index = node->cached_next_index; - pkts_processed += next1 == NAT44_ED_OUT2IN_NEXT_LOOKUP; + while (n_left_from > 0) + { + u32 n_left_to_next; - /* 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); - } + vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); while (n_left_from > 0 && n_left_to_next > 0) { @@ -1306,7 +1006,8 @@ nat44_ed_out2in_node_fn_inline (vlib_main_t * vm, n_left_to_next -= 1; b0 = vlib_get_buffer (vm, bi0); - next0 = NAT44_ED_OUT2IN_NEXT_LOOKUP; + next0 = nat_buffer_opaque (b0)->arc_next; + vnet_buffer (b0)->snat.flags = 0; ip0 = vlib_buffer_get_current (b0); @@ -1321,7 +1022,7 @@ nat44_ed_out2in_node_fn_inline (vlib_main_t * vm, icmp4_error_set_vnet_buffer (b0, ICMP4_time_exceeded, ICMP4_time_exceeded_ttl_exceeded_in_transit, 0); - next0 = NAT44_ED_OUT2IN_NEXT_ICMP_ERROR; + next0 = NAT_NEXT_ICMP_ERROR; goto trace0; } @@ -1330,139 +1031,125 @@ nat44_ed_out2in_node_fn_inline (vlib_main_t * vm, icmp0 = (icmp46_header_t *) udp0; proto0 = ip_proto_to_snat_proto (ip0->protocol); - if (is_slow_path) + if (PREDICT_FALSE (proto0 == ~0)) { - 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) { - s0 = - nat44_ed_out2in_unknown_proto (sm, b0, ip0, rx_fib_index0, - thread_index, now, vm, - node); - other_packets++; - if (!sm->forwarding_enabled) - { - if (!s0) - next0 = NAT44_ED_OUT2IN_NEXT_DROP; - goto trace0; - } - } - - if (PREDICT_FALSE (proto0 == SNAT_PROTOCOL_ICMP)) - { - next0 = icmp_out2in_ed_slow_path - (sm, b0, ip0, icmp0, sw_if_index0, rx_fib_index0, node, - next0, now, thread_index, &s0); - icmp_packets++; - goto trace0; + if (!s0) + next0 = NAT_NEXT_DROP; } + other_packets++; + goto trace0; } - else + + if (PREDICT_FALSE (proto0 == SNAT_PROTOCOL_ICMP)) { - if (PREDICT_FALSE (proto0 == ~0)) - { - next0 = NAT44_ED_OUT2IN_NEXT_SLOW_PATH; - goto trace0; - } + next0 = icmp_out2in_ed_slow_path + (sm, b0, ip0, icmp0, sw_if_index0, rx_fib_index0, node, + next0, now, thread_index, &s0); + icmp_packets++; + goto trace0; + } - if (ip4_is_fragment (ip0)) - { - next0 = NAT44_ED_OUT2IN_NEXT_REASS; - fragments++; - goto trace0; - } + make_ed_kv (&kv0, &ip0->dst_address, &ip0->src_address, + ip0->protocol, rx_fib_index0, + vnet_buffer (b0)->ip.reass.l4_dst_port, + vnet_buffer (b0)->ip.reass.l4_src_port); - if (PREDICT_FALSE (proto0 == SNAT_PROTOCOL_ICMP)) + s0 = NULL; + if (!clib_bihash_search_16_8 (&tsm->out2in_ed, &kv0, &value0)) + { + s0 = pool_elt_at_index (tsm->sessions, value0.value); + + if (s0->tcp_close_timestamp && now >= s0->tcp_close_timestamp) { - next0 = NAT44_ED_OUT2IN_NEXT_SLOW_PATH; - goto trace0; + nat_free_session_data (sm, s0, thread_index, 0); + nat44_delete_session (sm, s0, thread_index); + s0 = NULL; } } - 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 (!s0) { - 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 = vnet_buffer (b0)->ip.reass.l4_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, &lb_nat0, + &ip0->src_address, + &identity_nat0)) { - /* 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, &lb_nat0, - &ip0->src_address, - &identity_nat0)) + /* + * 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 + && (vnet_buffer (b0)->ip. + reass.l4_dst_port == + clib_host_to_net_u16 + (UDP_DST_PORT_dhcp_to_client)))) { - /* - * 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 (&next0, b0); - goto trace0; - } - - if (!sm->forwarding_enabled) - { - b0->error = - node->errors[NAT_OUT2IN_ED_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, rx_fib_index0)) - { - next0 = NAT44_ED_OUT2IN_NEXT_IN2OUT; - goto trace0; - } - create_bypass_for_fwd (sm, ip0, rx_fib_index0, - thread_index); - } goto trace0; } - if (PREDICT_FALSE (identity_nat0)) - goto trace0; - - if ((proto0 == SNAT_PROTOCOL_TCP) && !tcp_is_init (tcp0)) + if (!sm->forwarding_enabled) { - b0->error = node->errors[NAT_OUT2IN_ED_ERROR_NON_SYN]; - next0 = NAT44_ED_OUT2IN_NEXT_DROP; - goto trace0; + b0->error = + node->errors[NAT_OUT2IN_ED_ERROR_NO_TRANSLATION]; + next0 = NAT_NEXT_DROP; } - - /* 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, - lb_nat0, now); - - if (!s0) + else { - next0 = NAT44_ED_OUT2IN_NEXT_DROP; - goto trace0; + if (next_src_nat (sm, ip0, ip0->protocol, + vnet_buffer (b0)->ip. + reass.l4_src_port, + vnet_buffer (b0)->ip. + reass.l4_dst_port, thread_index, + rx_fib_index0)) + { + next0 = NAT_NEXT_IN2OUT_ED_FAST_PATH; + goto trace0; + } + if (sm->num_workers > 1) + create_bypass_for_fwd_worker (sm, b0, ip0, + rx_fib_index0); + else + create_bypass_for_fwd (sm, b0, ip0, rx_fib_index0, + thread_index); } + goto trace0; } - else + + if (PREDICT_FALSE (identity_nat0)) + goto trace0; + + if ((proto0 == SNAT_PROTOCOL_TCP) + && !tcp_flags_is_init (vnet_buffer (b0)->ip. + reass.icmp_type_or_tcp_flags)) { - next0 = NAT44_ED_OUT2IN_NEXT_SLOW_PATH; + b0->error = node->errors[NAT_OUT2IN_ED_ERROR_NON_SYN]; + next0 = NAT_NEXT_DROP; + 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, + lb_nat0, now); + if (!s0) + { + next0 = NAT_NEXT_DROP; goto trace0; } - } - else - { - s0 = pool_elt_at_index (tsm->sessions, value0.value); } old_addr0 = ip0->dst_address.as_u32; @@ -1478,42 +1165,80 @@ nat44_ed_out2in_node_fn_inline (vlib_main_t * vm, src_address); ip0->checksum = ip_csum_fold (sum0); + old_port0 = vnet_buffer (b0)->ip.reass.l4_dst_port; + if (PREDICT_TRUE (proto0 == SNAT_PROTOCOL_TCP)) { - old_port0 = tcp0->dst_port; - new_port0 = tcp0->dst_port = s0->in2out.port; - - sum0 = tcp0->checksum; + if (!vnet_buffer (b0)->ip.reass.is_non_first_fragment) + { + new_port0 = udp0->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, + vnet_buffer (b0)->ip. + reass.l4_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); + } + tcp_packets++; + if (nat44_set_tcp_session_state_o2i + (sm, now, s0, + vnet_buffer (b0)->ip.reass.icmp_type_or_tcp_flags, + vnet_buffer (b0)->ip.reass.tcp_ack_number, + vnet_buffer (b0)->ip.reass.tcp_seq_number, thread_index)) + goto trace0; + } + else if (!vnet_buffer (b0)->ip.reass.is_non_first_fragment + && udp0->checksum) + { + new_port0 = udp0->dst_port = s0->in2out.port; + sum0 = udp0->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)) + 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, 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; + sum0 = + ip_csum_update (sum0, + vnet_buffer (b0)->ip.reass.l4_src_port, + s0->ext_host_nat_port, ip4_header_t, + length); + udp0->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); - tcp_packets++; - if (nat44_set_tcp_session_state_o2i - (sm, s0, tcp0, thread_index)) - goto trace0; + udp0->checksum = ip_csum_fold (sum0); + udp_packets++; } else { - udp0->dst_port = s0->in2out.port; - if (is_twice_nat_session (s0)) + if (!vnet_buffer (b0)->ip.reass.is_non_first_fragment) { - udp0->src_port = s0->ext_host_nat_port; - ip0->src_address.as_u32 = s0->ext_host_nat_addr.as_u32; + new_port0 = udp0->dst_port = s0->in2out.port; + if (PREDICT_FALSE (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; udp_packets++; } @@ -1530,15 +1255,17 @@ nat44_ed_out2in_node_fn_inline (vlib_main_t * vm, { 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; + t->is_slow_path = 1; + if (s0) t->session_index = s0 - tsm->sessions; + else + t->session_index = ~0; } - pkts_processed += next0 == NAT44_ED_OUT2IN_NEXT_LOOKUP; + pkts_processed += next0 == nat_buffer_opaque (b0)->arc_next; /* verify speculative enqueue, maybe switch current next frame */ vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next, n_left_to_next, @@ -1570,27 +1297,19 @@ VLIB_NODE_FN (nat44_ed_out2in_node) (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame) { - return nat44_ed_out2in_node_fn_inline (vm, node, frame, 0); + return nat44_ed_out2in_fast_path_node_fn_inline (vm, node, frame); } /* *INDENT-OFF* */ VLIB_REGISTER_NODE (nat44_ed_out2in_node) = { .name = "nat44-ed-out2in", .vector_size = sizeof (u32), + .sibling_of = "nat-default", .format_trace = format_nat44_ed_out2in_trace, .type = VLIB_NODE_TYPE_INTERNAL, .n_errors = ARRAY_LEN(nat_out2in_ed_error_strings), .error_strings = nat_out2in_ed_error_strings, .runtime_data_bytes = sizeof (snat_runtime_t), - .n_next_nodes = NAT44_ED_OUT2IN_N_NEXT, - .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", - [NAT44_ED_OUT2IN_NEXT_REASS] = "nat44-ed-out2in-reass", - }, }; /* *INDENT-ON* */ @@ -1598,400 +1317,48 @@ VLIB_NODE_FN (nat44_ed_out2in_slowpath_node) (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame) { - return nat44_ed_out2in_node_fn_inline (vm, node, frame, 1); + return nat44_ed_out2in_slow_path_node_fn_inline (vm, node, frame); } /* *INDENT-OFF* */ VLIB_REGISTER_NODE (nat44_ed_out2in_slowpath_node) = { .name = "nat44-ed-out2in-slowpath", .vector_size = sizeof (u32), + .sibling_of = "nat-default", .format_trace = format_nat44_ed_out2in_trace, .type = VLIB_NODE_TYPE_INTERNAL, .n_errors = ARRAY_LEN(nat_out2in_ed_error_strings), .error_strings = nat_out2in_ed_error_strings, .runtime_data_bytes = sizeof (snat_runtime_t), - .n_next_nodes = NAT44_ED_OUT2IN_N_NEXT, - .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", - [NAT44_ED_OUT2IN_NEXT_REASS] = "nat44-ed-out2in-reass", - }, }; /* *INDENT-ON* */ -VLIB_NODE_FN (nat44_ed_out2in_reass_node) (vlib_main_t * vm, - vlib_node_runtime_t * node, - vlib_frame_t * frame) +static u8 * +format_nat_pre_trace (u8 * s, va_list * args) { - u32 n_left_from, *from, *to_next; - nat44_ed_out2in_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; - icmp46_header_t *icmp0; - clib_bihash_kv_16_8_t kv0, value0; - snat_session_t *s0 = 0; - u16 old_port0, new_port0; - ip_csum_t sum0; - snat_session_key_t e_key0, l_key0; - lb_nat_type_t lb0; - twice_nat_type_t twice_nat0; - u8 identity_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; - - 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 = NAT44_ED_OUT2IN_NEXT_DROP; - b0->error = node->errors[NAT_OUT2IN_ED_ERROR_DROP_FRAGMENT]; - goto trace0; - } - - ip0 = (ip4_header_t *) vlib_buffer_get_current (b0); - udp0 = ip4_next_header (ip0); - tcp0 = (tcp_header_t *) udp0; - icmp0 = (icmp46_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 = NAT44_ED_OUT2IN_NEXT_DROP; - b0->error = node->errors[NAT_OUT2IN_ED_ERROR_MAX_REASS]; - nat_log_notice ("maximum reassemblies exceeded"); - goto trace0; - } - - if (PREDICT_FALSE (ip4_is_first_fragment (ip0))) - { - if (PREDICT_FALSE (proto0 == SNAT_PROTOCOL_ICMP)) - { - next0 = icmp_out2in_ed_slow_path - (sm, b0, ip0, icmp0, sw_if_index0, rx_fib_index0, node, - next0, now, thread_index, &s0); - - if (PREDICT_TRUE (next0 != NAT44_ED_OUT2IN_NEXT_DROP)) - { - if (s0) - reass0->sess_index = s0 - per_thread_data->sessions; - else - reass0->flags |= NAT_REASS_FLAG_ED_DONT_TRANSLATE; - reass0->thread_index = thread_index; - nat_ip4_reass_get_frags (reass0, - &fragments_to_loopback); - } - - 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 - (&per_thread_data->out2in_ed, &kv0, &value0)) - { - /* 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, &lb0, 0, - &identity_nat0)) - { - /* - * 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 (&next0, b0); - goto trace0; - } - - if (!sm->forwarding_enabled) - { - b0->error = - node->errors[NAT_OUT2IN_ED_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, rx_fib_index0)) - { - next0 = NAT44_ED_OUT2IN_NEXT_IN2OUT; - goto trace0; - } - create_bypass_for_fwd (sm, ip0, rx_fib_index0, - thread_index); - reass0->flags |= NAT_REASS_FLAG_ED_DONT_TRANSLATE; - nat_ip4_reass_get_frags (reass0, - &fragments_to_loopback); - } - goto trace0; - } - - if (PREDICT_FALSE (identity_nat0)) - { - reass0->flags |= NAT_REASS_FLAG_ED_DONT_TRANSLATE; - goto trace0; - } - - if ((proto0 == SNAT_PROTOCOL_TCP) && !tcp_is_init (tcp0)) - { - b0->error = node->errors[NAT_OUT2IN_ED_ERROR_NON_SYN]; - next0 = NAT44_ED_OUT2IN_NEXT_DROP; - 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, lb0, - now); - if (!s0) - { - b0->error = - node->errors[NAT_OUT2IN_ED_ERROR_NO_TRANSLATION]; - next0 = NAT44_ED_OUT2IN_NEXT_DROP; - goto trace0; - } - reass0->sess_index = s0 - per_thread_data->sessions; - reass0->thread_index = thread_index; - } - 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 (reass0->flags & NAT_REASS_FLAG_ED_DONT_TRANSLATE) - goto trace0; - if (PREDICT_FALSE (reass0->sess_index == (u32) ~ 0)) - { - if (nat_ip4_reass_add_fragment - (thread_index, reass0, bi0, &fragments_to_drop)) - { - b0->error = node->errors[NAT_OUT2IN_ED_ERROR_MAX_FRAG]; - nat_log_notice - ("maximum fragments per reassembly exceeded"); - next0 = NAT44_ED_OUT2IN_NEXT_DROP; - goto trace0; - } - cached0 = 1; - goto trace0; - } - s0 = pool_elt_at_index (per_thread_data->sessions, - reass0->sess_index); - } - - old_addr0 = ip0->dst_address.as_u32; - ip0->dst_address = s0->in2out.addr; - new_addr0 = ip0->dst_address.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 /* changed member */ ); - 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_FALSE (ip4_is_first_fragment (ip0))) - { - if (PREDICT_TRUE (proto0 == SNAT_PROTOCOL_TCP)) - { - old_port0 = tcp0->dst_port; - tcp0->dst_port = s0->in2out.port; - new_port0 = tcp0->dst_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 */ ); - 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); - } - else - { - old_port0 = udp0->dst_port; - 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), - thread_index); - /* 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_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 != 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); - } - - 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_fast (from, fragments_to_loopback, - sizeof (u32) * len); - n_left_from = len; - vec_reset_length (fragments_to_loopback); - } - else - { - clib_memcpy_fast (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, sm->ed_out2in_reass_node_index, - NAT_OUT2IN_ED_ERROR_OUT2IN_PACKETS, - pkts_processed); - - nat_send_all_to_node (vm, fragments_to_drop, node, - &node->errors[NAT_OUT2IN_ED_ERROR_DROP_FRAGMENT], - NAT44_ED_OUT2IN_NEXT_DROP); + CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *); + CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *); + nat_pre_trace_t *t = va_arg (*args, nat_pre_trace_t *); + return format (s, "out2in next_index %d", t->next_index); +} - vec_free (fragments_to_drop); - vec_free (fragments_to_loopback); - return frame->n_vectors; +VLIB_NODE_FN (nat_pre_out2in_node) (vlib_main_t * vm, + vlib_node_runtime_t * node, + vlib_frame_t * frame) +{ + return nat_pre_node_fn_inline (vm, node, frame, + NAT_NEXT_OUT2IN_ED_FAST_PATH); } /* *INDENT-OFF* */ -VLIB_REGISTER_NODE (nat44_ed_out2in_reass_node) = { - .name = "nat44-ed-out2in-reass", +VLIB_REGISTER_NODE (nat_pre_out2in_node) = { + .name = "nat-pre-out2in", .vector_size = sizeof (u32), - .format_trace = format_nat44_reass_trace, + .sibling_of = "nat-default", + .format_trace = format_nat_pre_trace, .type = VLIB_NODE_TYPE_INTERNAL, - .n_errors = ARRAY_LEN(nat_out2in_ed_error_strings), - .error_strings = nat_out2in_ed_error_strings, - .n_next_nodes = NAT44_ED_OUT2IN_N_NEXT, - .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", - [NAT44_ED_OUT2IN_NEXT_REASS] = "nat44-ed-out2in-reass", - }, -}; + .n_errors = 0, + }; /* *INDENT-ON* */ /*