diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/plugins/nat/det44/det44_in2out.c | 1068 | ||||
| -rw-r--r-- | src/plugins/nat/det44/det44_out2in.c | 777 |
2 files changed, 897 insertions, 948 deletions
diff --git a/src/plugins/nat/det44/det44_in2out.c b/src/plugins/nat/det44/det44_in2out.c index 3ed1cc77ff6..0857ca18886 100644 --- a/src/plugins/nat/det44/det44_in2out.c +++ b/src/plugins/nat/det44/det44_in2out.c @@ -403,8 +403,7 @@ VLIB_NODE_FN (det44_in2out_node) (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame) { - u32 n_left_from, *from, *to_next; - det44_in2out_next_t next_index; + u32 n_left_from, *from; u32 pkts_processed = 0; det44_main_t *dm = &det44_main; u32 now = (u32) vlib_time_now (vm); @@ -412,627 +411,600 @@ VLIB_NODE_FN (det44_in2out_node) (vlib_main_t * vm, from = vlib_frame_vector_args (frame); n_left_from = frame->n_vectors; - next_index = node->cached_next_index; - while (n_left_from > 0) + vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b = bufs; + u16 nexts[VLIB_FRAME_SIZE], *next = nexts; + vlib_get_buffers (vm, from, b, n_left_from); + + while (n_left_from >= 2) { - u32 n_left_to_next; + vlib_buffer_t *b0, *b1; + u32 next0, next1; + u32 sw_if_index0, sw_if_index1; + ip4_header_t *ip0, *ip1; + ip_csum_t sum0, sum1; + ip4_address_t new_addr0, old_addr0, new_addr1, old_addr1; + u16 old_port0, new_port0, lo_port0, i0; + u16 old_port1, new_port1, lo_port1, i1; + udp_header_t *udp0, *udp1; + tcp_header_t *tcp0, *tcp1; + u32 proto0, proto1; + snat_det_out_key_t key0, key1; + snat_det_map_t *mp0, *mp1; + snat_det_session_t *ses0 = 0, *ses1 = 0; + u32 rx_fib_index0, rx_fib_index1; + icmp46_header_t *icmp0, *icmp1; + + b0 = *b; + b++; + b1 = *b; + b++; + + /* Prefetch next iteration. */ + if (PREDICT_TRUE (n_left_from >= 4)) + { + vlib_buffer_t *p2, *p3; - vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); + p2 = *b; + p3 = *(b + 1); + + vlib_prefetch_buffer_header (p2, LOAD); + vlib_prefetch_buffer_header (p3, LOAD); + + CLIB_PREFETCH (p2->data, CLIB_CACHE_LINE_BYTES, LOAD); + CLIB_PREFETCH (p3->data, CLIB_CACHE_LINE_BYTES, LOAD); + } - while (n_left_from >= 4 && n_left_to_next >= 2) + next0 = DET44_IN2OUT_NEXT_LOOKUP; + next1 = DET44_IN2OUT_NEXT_LOOKUP; + + ip0 = vlib_buffer_get_current (b0); + udp0 = ip4_next_header (ip0); + tcp0 = (tcp_header_t *) udp0; + + sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX]; + + if (PREDICT_FALSE (ip0->ttl == 1)) { - u32 bi0, bi1; - vlib_buffer_t *b0, *b1; - u32 next0, next1; - u32 sw_if_index0, sw_if_index1; - ip4_header_t *ip0, *ip1; - ip_csum_t sum0, sum1; - ip4_address_t new_addr0, old_addr0, new_addr1, old_addr1; - u16 old_port0, new_port0, lo_port0, i0; - u16 old_port1, new_port1, lo_port1, i1; - udp_header_t *udp0, *udp1; - tcp_header_t *tcp0, *tcp1; - u32 proto0, proto1; - snat_det_out_key_t key0, key1; - snat_det_map_t *mp0, *mp1; - snat_det_session_t *ses0 = 0, *ses1 = 0; - u32 rx_fib_index0, rx_fib_index1; - icmp46_header_t *icmp0, *icmp1; - - /* 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, LOAD); - CLIB_PREFETCH (p3->data, CLIB_CACHE_LINE_BYTES, LOAD); - } - - /* 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 = DET44_IN2OUT_NEXT_LOOKUP; - next1 = DET44_IN2OUT_NEXT_LOOKUP; - - ip0 = vlib_buffer_get_current (b0); - udp0 = ip4_next_header (ip0); - tcp0 = (tcp_header_t *) udp0; - - sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX]; - - 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 = DET44_IN2OUT_NEXT_ICMP_ERROR; - goto trace0; - } + 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 = DET44_IN2OUT_NEXT_ICMP_ERROR; + goto trace0; + } - proto0 = ip_proto_to_nat_proto (ip0->protocol); + proto0 = ip_proto_to_nat_proto (ip0->protocol); - if (PREDICT_FALSE (proto0 == NAT_PROTOCOL_ICMP)) - { - rx_fib_index0 = - ip4_fib_table_get_index_for_sw_if_index (sw_if_index0); - icmp0 = (icmp46_header_t *) udp0; - - // TODO: - next0 = det44_icmp_in2out (b0, ip0, icmp0, sw_if_index0, - rx_fib_index0, node, next0, - thread_index, &ses0, &mp0); - goto trace0; - } + if (PREDICT_FALSE (proto0 == NAT_PROTOCOL_ICMP)) + { + rx_fib_index0 = + ip4_fib_table_get_index_for_sw_if_index (sw_if_index0); + icmp0 = (icmp46_header_t *) udp0; + + // TODO: + next0 = det44_icmp_in2out (b0, ip0, icmp0, sw_if_index0, + rx_fib_index0, node, next0, + thread_index, &ses0, &mp0); + goto trace0; + } - mp0 = snat_det_map_by_user (&ip0->src_address); - if (PREDICT_FALSE (!mp0)) - { - det44_log_info ("no match for internal host %U", - format_ip4_address, &ip0->src_address); - next0 = DET44_IN2OUT_NEXT_DROP; - b0->error = node->errors[DET44_IN2OUT_ERROR_NO_TRANSLATION]; - goto trace0; - } + mp0 = snat_det_map_by_user (&ip0->src_address); + if (PREDICT_FALSE (!mp0)) + { + det44_log_info ("no match for internal host %U", + format_ip4_address, &ip0->src_address); + next0 = DET44_IN2OUT_NEXT_DROP; + b0->error = node->errors[DET44_IN2OUT_ERROR_NO_TRANSLATION]; + goto trace0; + } - snat_det_forward (mp0, &ip0->src_address, &new_addr0, &lo_port0); + snat_det_forward (mp0, &ip0->src_address, &new_addr0, &lo_port0); - key0.ext_host_addr = ip0->dst_address; - key0.ext_host_port = tcp0->dst; + key0.ext_host_addr = ip0->dst_address; + key0.ext_host_port = tcp0->dst; - ses0 = - snat_det_find_ses_by_in (mp0, &ip0->src_address, tcp0->src, key0); + ses0 = + snat_det_find_ses_by_in (mp0, &ip0->src_address, tcp0->src, key0); + if (PREDICT_FALSE (!ses0)) + { + for (i0 = 0; i0 < mp0->ports_per_host; i0++) + { + key0.out_port = clib_host_to_net_u16 (lo_port0 + + ((i0 + + clib_net_to_host_u16 + (tcp0->src)) % + mp0->ports_per_host)); + + if (snat_det_get_ses_by_out + (mp0, &ip0->src_address, key0.as_u64)) + continue; + + ses0 = + snat_det_ses_create (thread_index, mp0, &ip0->src_address, + tcp0->src, &key0); + break; + } if (PREDICT_FALSE (!ses0)) { - for (i0 = 0; i0 < mp0->ports_per_host; i0++) - { - key0.out_port = clib_host_to_net_u16 (lo_port0 + - ((i0 + - clib_net_to_host_u16 - (tcp0->src)) % - mp0-> - ports_per_host)); - - if (snat_det_get_ses_by_out - (mp0, &ip0->src_address, key0.as_u64)) - continue; - - ses0 = - snat_det_ses_create (thread_index, mp0, &ip0->src_address, - tcp0->src, &key0); - break; - } - if (PREDICT_FALSE (!ses0)) - { - /* too many sessions for user, send ICMP error packet */ - vnet_buffer (b0)->sw_if_index[VLIB_TX] = (u32) ~ 0; - icmp4_error_set_vnet_buffer (b0, - ICMP4_destination_unreachable, - ICMP4_destination_unreachable_destination_unreachable_host, - 0); - next0 = DET44_IN2OUT_NEXT_ICMP_ERROR; - goto trace0; - } + /* too many sessions for user, send ICMP error packet */ + vnet_buffer (b0)->sw_if_index[VLIB_TX] = (u32) ~ 0; + icmp4_error_set_vnet_buffer (b0, + ICMP4_destination_unreachable, + ICMP4_destination_unreachable_destination_unreachable_host, + 0); + next0 = DET44_IN2OUT_NEXT_ICMP_ERROR; + goto trace0; } + } - old_port0 = udp0->src_port; - udp0->src_port = new_port0 = ses0->out.out_port; + old_port0 = udp0->src_port; + udp0->src_port = new_port0 = ses0->out.out_port; - old_addr0.as_u32 = ip0->src_address.as_u32; - ip0->src_address.as_u32 = new_addr0.as_u32; - vnet_buffer (b0)->sw_if_index[VLIB_TX] = dm->outside_fib_index; + old_addr0.as_u32 = ip0->src_address.as_u32; + ip0->src_address.as_u32 = new_addr0.as_u32; + vnet_buffer (b0)->sw_if_index[VLIB_TX] = dm->outside_fib_index; - sum0 = ip0->checksum; + sum0 = ip0->checksum; + sum0 = ip_csum_update (sum0, old_addr0.as_u32, new_addr0.as_u32, + ip4_header_t, src_address /* changed member */ ); + ip0->checksum = ip_csum_fold (sum0); + + if (PREDICT_TRUE (proto0 == NAT_PROTOCOL_TCP)) + { + if (tcp0->flags & TCP_FLAG_SYN) + ses0->state = DET44_SESSION_TCP_SYN_SENT; + else if (tcp0->flags & TCP_FLAG_ACK + && ses0->state == DET44_SESSION_TCP_SYN_SENT) + ses0->state = DET44_SESSION_TCP_ESTABLISHED; + else if (tcp0->flags & TCP_FLAG_FIN + && ses0->state == DET44_SESSION_TCP_ESTABLISHED) + ses0->state = DET44_SESSION_TCP_FIN_WAIT; + else if (tcp0->flags & TCP_FLAG_ACK + && ses0->state == DET44_SESSION_TCP_FIN_WAIT) + snat_det_ses_close (mp0, ses0); + else if (tcp0->flags & TCP_FLAG_FIN + && ses0->state == DET44_SESSION_TCP_CLOSE_WAIT) + ses0->state = DET44_SESSION_TCP_LAST_ACK; + else if (tcp0->flags == 0 && ses0->state == DET44_SESSION_UNKNOWN) + ses0->state = DET44_SESSION_TCP_ESTABLISHED; + + sum0 = tcp0->checksum; sum0 = ip_csum_update (sum0, old_addr0.as_u32, new_addr0.as_u32, ip4_header_t, - src_address /* changed member */ ); - ip0->checksum = ip_csum_fold (sum0); - - if (PREDICT_TRUE (proto0 == NAT_PROTOCOL_TCP)) - { - if (tcp0->flags & TCP_FLAG_SYN) - ses0->state = DET44_SESSION_TCP_SYN_SENT; - else if (tcp0->flags & TCP_FLAG_ACK - && ses0->state == DET44_SESSION_TCP_SYN_SENT) - ses0->state = DET44_SESSION_TCP_ESTABLISHED; - else if (tcp0->flags & TCP_FLAG_FIN - && ses0->state == DET44_SESSION_TCP_ESTABLISHED) - ses0->state = DET44_SESSION_TCP_FIN_WAIT; - else if (tcp0->flags & TCP_FLAG_ACK - && ses0->state == DET44_SESSION_TCP_FIN_WAIT) - snat_det_ses_close (mp0, ses0); - else if (tcp0->flags & TCP_FLAG_FIN - && ses0->state == DET44_SESSION_TCP_CLOSE_WAIT) - ses0->state = DET44_SESSION_TCP_LAST_ACK; - else if (tcp0->flags == 0 - && ses0->state == DET44_SESSION_UNKNOWN) - ses0->state = DET44_SESSION_TCP_ESTABLISHED; - - sum0 = tcp0->checksum; - sum0 = ip_csum_update (sum0, old_addr0.as_u32, new_addr0.as_u32, - ip4_header_t, - dst_address /* changed member */ ); - sum0 = ip_csum_update (sum0, old_port0, new_port0, - ip4_header_t /* cheat */ , - length /* changed member */ ); - mss_clamping (dm->mss_clamping, tcp0, &sum0); - tcp0->checksum = ip_csum_fold (sum0); - } - else - { - ses0->state = DET44_SESSION_UDP_ACTIVE; - - if (PREDICT_FALSE (udp0->checksum)) - { - sum0 = udp0->checksum; - sum0 = - ip_csum_update (sum0, old_addr0.as_u32, new_addr0.as_u32, - ip4_header_t, - dst_address /* changed member */ ); - sum0 = - ip_csum_update (sum0, old_port0, new_port0, - ip4_header_t /* cheat */ , - length /* changed member */ ); - udp0->checksum = ip_csum_fold (sum0); - } - } + dst_address /* changed member */ ); + sum0 = ip_csum_update (sum0, old_port0, new_port0, + ip4_header_t /* cheat */ , + length /* changed member */ ); + mss_clamping (dm->mss_clamping, tcp0, &sum0); + tcp0->checksum = ip_csum_fold (sum0); + } + else + { + ses0->state = DET44_SESSION_UDP_ACTIVE; - switch (ses0->state) + if (PREDICT_FALSE (udp0->checksum)) { - case DET44_SESSION_UDP_ACTIVE: - ses0->expire = now + dm->timeouts.udp; - break; - case DET44_SESSION_TCP_SYN_SENT: - case DET44_SESSION_TCP_FIN_WAIT: - case DET44_SESSION_TCP_CLOSE_WAIT: - case DET44_SESSION_TCP_LAST_ACK: - ses0->expire = now + dm->timeouts.tcp.transitory; - break; - case DET44_SESSION_TCP_ESTABLISHED: - ses0->expire = now + dm->timeouts.tcp.established; - break; + sum0 = udp0->checksum; + sum0 = + ip_csum_update (sum0, old_addr0.as_u32, new_addr0.as_u32, + ip4_header_t, + dst_address /* changed member */ ); + sum0 = + ip_csum_update (sum0, old_port0, new_port0, + ip4_header_t /* cheat */ , + length /* changed member */ ); + udp0->checksum = ip_csum_fold (sum0); } + } - trace0: - if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) - && (b0->flags & VLIB_BUFFER_IS_TRACED))) - { - det44_in2out_trace_t *t = - vlib_add_trace (vm, node, b0, sizeof (*t)); - t->sw_if_index = sw_if_index0; - t->next_index = next0; - t->session_index = ~0; - if (ses0) - t->session_index = ses0 - mp0->sessions; - } + switch (ses0->state) + { + case DET44_SESSION_UDP_ACTIVE: + ses0->expire = now + dm->timeouts.udp; + break; + case DET44_SESSION_TCP_SYN_SENT: + case DET44_SESSION_TCP_FIN_WAIT: + case DET44_SESSION_TCP_CLOSE_WAIT: + case DET44_SESSION_TCP_LAST_ACK: + ses0->expire = now + dm->timeouts.tcp.transitory; + break; + case DET44_SESSION_TCP_ESTABLISHED: + ses0->expire = now + dm->timeouts.tcp.established; + break; + } - pkts_processed += next0 != DET44_IN2OUT_NEXT_DROP; + trace0: + if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) + && (b0->flags & VLIB_BUFFER_IS_TRACED))) + { + det44_in2out_trace_t *t = + vlib_add_trace (vm, node, b0, sizeof (*t)); + t->sw_if_index = sw_if_index0; + t->next_index = next0; + t->session_index = ~0; + if (ses0) + t->session_index = ses0 - mp0->sessions; + } - ip1 = vlib_buffer_get_current (b1); - udp1 = ip4_next_header (ip1); - tcp1 = (tcp_header_t *) udp1; + pkts_processed += next0 != DET44_IN2OUT_NEXT_DROP; - sw_if_index1 = vnet_buffer (b1)->sw_if_index[VLIB_RX]; + ip1 = vlib_buffer_get_current (b1); + udp1 = ip4_next_header (ip1); + tcp1 = (tcp_header_t *) udp1; - 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 = DET44_IN2OUT_NEXT_ICMP_ERROR; - goto trace1; - } + sw_if_index1 = vnet_buffer (b1)->sw_if_index[VLIB_RX]; - proto1 = ip_proto_to_nat_proto (ip1->protocol); + 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 = DET44_IN2OUT_NEXT_ICMP_ERROR; + goto trace1; + } - if (PREDICT_FALSE (proto1 == NAT_PROTOCOL_ICMP)) - { - rx_fib_index1 = - ip4_fib_table_get_index_for_sw_if_index (sw_if_index1); - icmp1 = (icmp46_header_t *) udp1; + proto1 = ip_proto_to_nat_proto (ip1->protocol); - next1 = det44_icmp_in2out (b1, ip1, icmp1, sw_if_index1, - rx_fib_index1, node, next1, - thread_index, &ses1, &mp1); - goto trace1; - } + if (PREDICT_FALSE (proto1 == NAT_PROTOCOL_ICMP)) + { + rx_fib_index1 = + ip4_fib_table_get_index_for_sw_if_index (sw_if_index1); + icmp1 = (icmp46_header_t *) udp1; + + next1 = det44_icmp_in2out (b1, ip1, icmp1, sw_if_index1, + rx_fib_index1, node, next1, + thread_index, &ses1, &mp1); + goto trace1; + } - mp1 = snat_det_map_by_user (&ip1->src_address); - if (PREDICT_FALSE (!mp1)) - { - det44_log_info ("no match for internal host %U", - format_ip4_address, &ip0->src_address); - next1 = DET44_IN2OUT_NEXT_DROP; - b1->error = node->errors[DET44_IN2OUT_ERROR_NO_TRANSLATION]; - goto trace1; - } + mp1 = snat_det_map_by_user (&ip1->src_address); + if (PREDICT_FALSE (!mp1)) + { + det44_log_info ("no match for internal host %U", + format_ip4_address, &ip0->src_address); + next1 = DET44_IN2OUT_NEXT_DROP; + b1->error = node->errors[DET44_IN2OUT_ERROR_NO_TRANSLATION]; + goto trace1; + } - snat_det_forward (mp1, &ip1->src_address, &new_addr1, &lo_port1); + snat_det_forward (mp1, &ip1->src_address, &new_addr1, &lo_port1); - key1.ext_host_addr = ip1->dst_address; - key1.ext_host_port = tcp1->dst; + key1.ext_host_addr = ip1->dst_address; + key1.ext_host_port = tcp1->dst; - ses1 = - snat_det_find_ses_by_in (mp1, &ip1->src_address, tcp1->src, key1); + ses1 = + snat_det_find_ses_by_in (mp1, &ip1->src_address, tcp1->src, key1); + if (PREDICT_FALSE (!ses1)) + { + for (i1 = 0; i1 < mp1->ports_per_host; i1++) + { + key1.out_port = clib_host_to_net_u16 (lo_port1 + + ((i1 + + clib_net_to_host_u16 + (tcp1->src)) % + mp1->ports_per_host)); + + if (snat_det_get_ses_by_out + (mp1, &ip1->src_address, key1.as_u64)) + continue; + + ses1 = + snat_det_ses_create (thread_index, mp1, &ip1->src_address, + tcp1->src, &key1); + break; + } if (PREDICT_FALSE (!ses1)) { - for (i1 = 0; i1 < mp1->ports_per_host; i1++) - { - key1.out_port = clib_host_to_net_u16 (lo_port1 + - ((i1 + - clib_net_to_host_u16 - (tcp1->src)) % - mp1-> - ports_per_host)); - - if (snat_det_get_ses_by_out - (mp1, &ip1->src_address, key1.as_u64)) - continue; - - ses1 = - snat_det_ses_create (thread_index, mp1, &ip1->src_address, - tcp1->src, &key1); - break; - } - if (PREDICT_FALSE (!ses1)) - { - /* too many sessions for user, send ICMP error packet */ - vnet_buffer (b1)->sw_if_index[VLIB_TX] = (u32) ~ 0; - icmp4_error_set_vnet_buffer (b1, - ICMP4_destination_unreachable, - ICMP4_destination_unreachable_destination_unreachable_host, - 0); - next1 = DET44_IN2OUT_NEXT_ICMP_ERROR; - goto trace1; - } + /* too many sessions for user, send ICMP error packet */ + vnet_buffer (b1)->sw_if_index[VLIB_TX] = (u32) ~ 0; + icmp4_error_set_vnet_buffer (b1, + ICMP4_destination_unreachable, + ICMP4_destination_unreachable_destination_unreachable_host, + 0); + next1 = DET44_IN2OUT_NEXT_ICMP_ERROR; + goto trace1; } + } + + old_port1 = udp1->src_port; + udp1->src_port = new_port1 = ses1->out.out_port; - old_port1 = udp1->src_port; - udp1->src_port = new_port1 = ses1->out.out_port; + old_addr1.as_u32 = ip1->src_address.as_u32; + ip1->src_address.as_u32 = new_addr1.as_u32; + vnet_buffer (b1)->sw_if_index[VLIB_TX] = dm->outside_fib_index; - old_addr1.as_u32 = ip1->src_address.as_u32; - ip1->src_address.as_u32 = new_addr1.as_u32; - vnet_buffer (b1)->sw_if_index[VLIB_TX] = dm->outside_fib_index; + sum1 = ip1->checksum; + sum1 = ip_csum_update (sum1, old_addr1.as_u32, new_addr1.as_u32, + ip4_header_t, src_address /* changed member */ ); + ip1->checksum = ip_csum_fold (sum1); - sum1 = ip1->checksum; + if (PREDICT_TRUE (proto1 == NAT_PROTOCOL_TCP)) + { + if (tcp1->flags & TCP_FLAG_SYN) + ses1->state = DET44_SESSION_TCP_SYN_SENT; + else if (tcp1->flags & TCP_FLAG_ACK + && ses1->state == DET44_SESSION_TCP_SYN_SENT) + ses1->state = DET44_SESSION_TCP_ESTABLISHED; + else if (tcp1->flags & TCP_FLAG_FIN + && ses1->state == DET44_SESSION_TCP_ESTABLISHED) + ses1->state = DET44_SESSION_TCP_FIN_WAIT; + else if (tcp1->flags & TCP_FLAG_ACK + && ses1->state == DET44_SESSION_TCP_FIN_WAIT) + snat_det_ses_close (mp1, ses1); + else if (tcp1->flags & TCP_FLAG_FIN + && ses1->state == DET44_SESSION_TCP_CLOSE_WAIT) + ses1->state = DET44_SESSION_TCP_LAST_ACK; + else if (tcp1->flags == 0 && ses1->state == DET44_SESSION_UNKNOWN) + ses1->state = DET44_SESSION_TCP_ESTABLISHED; + + sum1 = tcp1->checksum; sum1 = ip_csum_update (sum1, old_addr1.as_u32, new_addr1.as_u32, ip4_header_t, - src_address /* changed member */ ); - ip1->checksum = ip_csum_fold (sum1); + dst_address /* changed member */ ); + sum1 = ip_csum_update (sum1, old_port1, new_port1, + ip4_header_t /* cheat */ , + length /* changed member */ ); + mss_clamping (dm->mss_clamping, tcp1, &sum1); + tcp1->checksum = ip_csum_fold (sum1); + } + else + { + ses1->state = DET44_SESSION_UDP_ACTIVE; - if (PREDICT_TRUE (proto1 == NAT_PROTOCOL_TCP)) - { - if (tcp1->flags & TCP_FLAG_SYN) - ses1->state = DET44_SESSION_TCP_SYN_SENT; - else if (tcp1->flags & TCP_FLAG_ACK - && ses1->state == DET44_SESSION_TCP_SYN_SENT) - ses1->state = DET44_SESSION_TCP_ESTABLISHED; - else if (tcp1->flags & TCP_FLAG_FIN - && ses1->state == DET44_SESSION_TCP_ESTABLISHED) - ses1->state = DET44_SESSION_TCP_FIN_WAIT; - else if (tcp1->flags & TCP_FLAG_ACK - && ses1->state == DET44_SESSION_TCP_FIN_WAIT) - snat_det_ses_close (mp1, ses1); - else if (tcp1->flags & TCP_FLAG_FIN - && ses1->state == DET44_SESSION_TCP_CLOSE_WAIT) - ses1->state = DET44_SESSION_TCP_LAST_ACK; - else if (tcp1->flags == 0 - && ses1->state == DET44_SESSION_UNKNOWN) - ses1->state = DET44_SESSION_TCP_ESTABLISHED; - - sum1 = tcp1->checksum; - sum1 = ip_csum_update (sum1, old_addr1.as_u32, new_addr1.as_u32, - ip4_header_t, - dst_address /* changed member */ ); - sum1 = ip_csum_update (sum1, old_port1, new_port1, - ip4_header_t /* cheat */ , - length /* changed member */ ); - mss_clamping (dm->mss_clamping, tcp1, &sum1); - tcp1->checksum = ip_csum_fold (sum1); - } - else + if (PREDICT_FALSE (udp1->checksum)) { - ses1->state = DET44_SESSION_UDP_ACTIVE; - - if (PREDICT_FALSE (udp1->checksum)) - { - sum1 = udp1->checksum; - sum1 = - ip_csum_update (sum1, old_addr1.as_u32, new_addr1.as_u32, - ip4_header_t, - dst_address /* changed member */ ); - sum1 = - ip_csum_update (sum1, old_port1, new_port1, - ip4_header_t /* cheat */ , - length /* changed member */ ); - udp1->checksum = ip_csum_fold (sum1); - } + sum1 = udp1->checksum; + sum1 = + ip_csum_update (sum1, old_addr1.as_u32, new_addr1.as_u32, + ip4_header_t, + dst_address /* changed member */ ); + sum1 = + ip_csum_update (sum1, old_port1, new_port1, + ip4_header_t /* cheat */ , + length /* changed member */ ); + udp1->checksum = ip_csum_fold (sum1); } + } - switch (ses1->state) - { - case DET44_SESSION_UDP_ACTIVE: - ses1->expire = now + dm->timeouts.udp; - break; - case DET44_SESSION_TCP_SYN_SENT: - case DET44_SESSION_TCP_FIN_WAIT: - case DET44_SESSION_TCP_CLOSE_WAIT: - case DET44_SESSION_TCP_LAST_ACK: - ses1->expire = now + dm->timeouts.tcp.transitory; - break; - case DET44_SESSION_TCP_ESTABLISHED: - ses1->expire = now + dm->timeouts.tcp.established; - break; - } + switch (ses1->state) + { + case DET44_SESSION_UDP_ACTIVE: + ses1->expire = now + dm->timeouts.udp; + break; + case DET44_SESSION_TCP_SYN_SENT: + case DET44_SESSION_TCP_FIN_WAIT: + case DET44_SESSION_TCP_CLOSE_WAIT: + case DET44_SESSION_TCP_LAST_ACK: + ses1->expire = now + dm->timeouts.tcp.transitory; + break; + case DET44_SESSION_TCP_ESTABLISHED: + ses1->expire = now + dm->timeouts.tcp.established; + break; + } - trace1: - if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) - && (b1->flags & VLIB_BUFFER_IS_TRACED))) - { - det44_in2out_trace_t *t = - vlib_add_trace (vm, node, b1, sizeof (*t)); - t->sw_if_index = sw_if_index1; - t->next_index = next1; - t->session_index = ~0; - if (ses1) - t->session_index = ses1 - mp1->sessions; - } + trace1: + if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) + && (b1->flags & VLIB_BUFFER_IS_TRACED))) + { + det44_in2out_trace_t *t = + vlib_add_trace (vm, node, b1, sizeof (*t)); + t->sw_if_index = sw_if_index1; + t->next_index = next1; + t->session_index = ~0; + if (ses1) + t->session_index = ses1 - mp1->sessions; + } - pkts_processed += next1 != DET44_IN2OUT_NEXT_DROP; + pkts_processed += next1 != DET44_IN2OUT_NEXT_DROP; - /* verify speculative enqueues, maybe switch current next frame */ - vlib_validate_buffer_enqueue_x2 (vm, node, next_index, - to_next, n_left_to_next, - bi0, bi1, next0, next1); + n_left_from -= 2; + next[0] = next0; + next[1] = next1; + next += 2; + } + + while (n_left_from > 0) + { + vlib_buffer_t *b0; + u32 next0; + u32 sw_if_index0; + ip4_header_t *ip0; + ip_csum_t sum0; + ip4_address_t new_addr0, old_addr0; + u16 old_port0, new_port0, lo_port0, i0; + udp_header_t *udp0; + tcp_header_t *tcp0; + u32 proto0; + snat_det_out_key_t key0; + snat_det_map_t *mp0; + snat_det_session_t *ses0 = 0; + u32 rx_fib_index0; + icmp46_header_t *icmp0; + + b0 = *b; + b++; + next0 = DET44_IN2OUT_NEXT_LOOKUP; + + ip0 = vlib_buffer_get_current (b0); + udp0 = ip4_next_header (ip0); + tcp0 = (tcp_header_t *) udp0; + + sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX]; + + 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 = DET44_IN2OUT_NEXT_ICMP_ERROR; + goto trace00; } - while (n_left_from > 0 && n_left_to_next > 0) + proto0 = ip_proto_to_nat_proto (ip0->protocol); + + if (PREDICT_FALSE (proto0 == NAT_PROTOCOL_ICMP)) { - u32 bi0; - vlib_buffer_t *b0; - u32 next0; - u32 sw_if_index0; - ip4_header_t *ip0; - ip_csum_t sum0; - ip4_address_t new_addr0, old_addr0; - u16 old_port0, new_port0, lo_port0, i0; - udp_header_t *udp0; - tcp_header_t *tcp0; - u32 proto0; - snat_det_out_key_t key0; - snat_det_map_t *mp0; - snat_det_session_t *ses0 = 0; - u32 rx_fib_index0; - icmp46_header_t *icmp0; - - /* 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 = DET44_IN2OUT_NEXT_LOOKUP; - - ip0 = vlib_buffer_get_current (b0); - udp0 = ip4_next_header (ip0); - tcp0 = (tcp_header_t *) udp0; - - sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX]; - - 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 = DET44_IN2OUT_NEXT_ICMP_ERROR; - goto trace00; - } + rx_fib_index0 = + ip4_fib_table_get_index_for_sw_if_index (sw_if_index0); + icmp0 = (icmp46_header_t *) udp0; + + next0 = det44_icmp_in2out (b0, ip0, icmp0, sw_if_index0, + rx_fib_index0, node, next0, + thread_index, &ses0, &mp0); + goto trace00; + } - proto0 = ip_proto_to_nat_proto (ip0->protocol); + mp0 = snat_det_map_by_user (&ip0->src_address); + if (PREDICT_FALSE (!mp0)) + { + det44_log_info ("no match for internal host %U", + format_ip4_address, &ip0->src_address); + next0 = DET44_IN2OUT_NEXT_DROP; + b0->error = node->errors[DET44_IN2OUT_ERROR_NO_TRANSLATION]; + goto trace00; + } - if (PREDICT_FALSE (proto0 == NAT_PROTOCOL_ICMP)) - { - rx_fib_index0 = - ip4_fib_table_get_index_for_sw_if_index (sw_if_index0); - icmp0 = (icmp46_header_t *) udp0; + snat_det_forward (mp0, &ip0->src_address, &new_addr0, &lo_port0); - next0 = det44_icmp_in2out (b0, ip0, icmp0, sw_if_index0, - rx_fib_index0, node, next0, - thread_index, &ses0, &mp0); - goto trace00; - } + key0.ext_host_addr = ip0->dst_address; + key0.ext_host_port = tcp0->dst; - mp0 = snat_det_map_by_user (&ip0->src_address); - if (PREDICT_FALSE (!mp0)) + ses0 = + snat_det_find_ses_by_in (mp0, &ip0->src_address, tcp0->src, key0); + if (PREDICT_FALSE (!ses0)) + { + for (i0 = 0; i0 < mp0->ports_per_host; i0++) { - det44_log_info ("no match for internal host %U", - format_ip4_address, &ip0->src_address); - next0 = DET44_IN2OUT_NEXT_DROP; - b0->error = node->errors[DET44_IN2OUT_ERROR_NO_TRANSLATION]; - goto trace00; + key0.out_port = clib_host_to_net_u16 (lo_port0 + + ((i0 + + clib_net_to_host_u16 + (tcp0->src)) % + mp0->ports_per_host)); + + if (snat_det_get_ses_by_out + (mp0, &ip0->src_address, key0.as_u64)) + continue; + + ses0 = + snat_det_ses_create (thread_index, mp0, &ip0->src_address, + tcp0->src, &key0); + break; } - - snat_det_forward (mp0, &ip0->src_address, &new_addr0, &lo_port0); - - key0.ext_host_addr = ip0->dst_address; - key0.ext_host_port = tcp0->dst; - - ses0 = - snat_det_find_ses_by_in (mp0, &ip0->src_address, tcp0->src, key0); if (PREDICT_FALSE (!ses0)) { - for (i0 = 0; i0 < mp0->ports_per_host; i0++) - { - key0.out_port = clib_host_to_net_u16 (lo_port0 + - ((i0 + - clib_net_to_host_u16 - (tcp0->src)) % - mp0-> - ports_per_host)); - - if (snat_det_get_ses_by_out - (mp0, &ip0->src_address, key0.as_u64)) - continue; - - ses0 = - snat_det_ses_create (thread_index, mp0, &ip0->src_address, - tcp0->src, &key0); - break; - } - if (PREDICT_FALSE (!ses0)) - { - /* too many sessions for user, send ICMP error packet */ - vnet_buffer (b0)->sw_if_index[VLIB_TX] = (u32) ~ 0; - icmp4_error_set_vnet_buffer (b0, - ICMP4_destination_unreachable, - ICMP4_destination_unreachable_destination_unreachable_host, - 0); - next0 = DET44_IN2OUT_NEXT_ICMP_ERROR; - goto trace00; - } + /* too many sessions for user, send ICMP error packet */ + vnet_buffer (b0)->sw_if_index[VLIB_TX] = (u32) ~ 0; + icmp4_error_set_vnet_buffer (b0, + ICMP4_destination_unreachable, + ICMP4_destination_unreachable_destination_unreachable_host, + 0); + next0 = DET44_IN2OUT_NEXT_ICMP_ERROR; + goto trace00; } + } + + old_port0 = udp0->src_port; + udp0->src_port = new_port0 = ses0->out.out_port; - old_port0 = udp0->src_port; - udp0->src_port = new_port0 = ses0->out.out_port; + old_addr0.as_u32 = ip0->src_address.as_u32; + ip0->src_address.as_u32 = new_addr0.as_u32; + vnet_buffer (b0)->sw_if_index[VLIB_TX] = dm->outside_fib_index; - old_addr0.as_u32 = ip0->src_address.as_u32; - ip0->src_address.as_u32 = new_addr0.as_u32; - vnet_buffer (b0)->sw_if_index[VLIB_TX] = dm->outside_fib_index; + sum0 = ip0->checksum; + sum0 = ip_csum_update (sum0, old_addr0.as_u32, new_addr0.as_u32, + ip4_header_t, src_address /* changed member */ ); + ip0->checksum = ip_csum_fold (sum0); - sum0 = ip0->checksum; + if (PREDICT_TRUE (proto0 == NAT_PROTOCOL_TCP)) + { + if (tcp0->flags & TCP_FLAG_SYN) + ses0->state = DET44_SESSION_TCP_SYN_SENT; + else if (tcp0->flags & TCP_FLAG_ACK + && ses0->state == DET44_SESSION_TCP_SYN_SENT) + ses0->state = DET44_SESSION_TCP_ESTABLISHED; + else if (tcp0->flags & TCP_FLAG_FIN + && ses0->state == DET44_SESSION_TCP_ESTABLISHED) + ses0->state = DET44_SESSION_TCP_FIN_WAIT; + else if (tcp0->flags & TCP_FLAG_ACK + && ses0->state == DET44_SESSION_TCP_FIN_WAIT) + snat_det_ses_close (mp0, ses0); + else if (tcp0->flags & TCP_FLAG_FIN + && ses0->state == DET44_SESSION_TCP_CLOSE_WAIT) + ses0->state = DET44_SESSION_TCP_LAST_ACK; + else if (tcp0->flags == 0 && ses0->state == DET44_SESSION_UNKNOWN) + ses0->state = DET44_SESSION_TCP_ESTABLISHED; + + sum0 = tcp0->checksum; sum0 = ip_csum_update (sum0, old_addr0.as_u32, new_addr0.as_u32, ip4_header_t, - src_address /* changed member */ ); - ip0->checksum = ip_csum_fold (sum0); - - if (PREDICT_TRUE (proto0 == NAT_PROTOCOL_TCP)) - { - if (tcp0->flags & TCP_FLAG_SYN) - ses0->state = DET44_SESSION_TCP_SYN_SENT; - else if (tcp0->flags & TCP_FLAG_ACK - && ses0->state == DET44_SESSION_TCP_SYN_SENT) - ses0->state = DET44_SESSION_TCP_ESTABLISHED; - else if (tcp0->flags & TCP_FLAG_FIN - && ses0->state == DET44_SESSION_TCP_ESTABLISHED) - ses0->state = DET44_SESSION_TCP_FIN_WAIT; - else if (tcp0->flags & TCP_FLAG_ACK - && ses0->state == DET44_SESSION_TCP_FIN_WAIT) - snat_det_ses_close (mp0, ses0); - else if (tcp0->flags & TCP_FLAG_FIN - && ses0->state == DET44_SESSION_TCP_CLOSE_WAIT) - ses0->state = DET44_SESSION_TCP_LAST_ACK; - else if (tcp0->flags == 0 - && ses0->state == DET44_SESSION_UNKNOWN) - ses0->state = DET44_SESSION_TCP_ESTABLISHED; - - sum0 = tcp0->checksum; - sum0 = ip_csum_update (sum0, old_addr0.as_u32, new_addr0.as_u32, - ip4_header_t, - dst_address /* changed member */ ); - sum0 = ip_csum_update (sum0, old_port0, new_port0, - ip4_header_t /* cheat */ , - length /* changed member */ ); - mss_clamping (dm->mss_clamping, tcp0, &sum0); - tcp0->checksum = ip_csum_fold (sum0); - } - else - { - ses0->state = DET44_SESSION_UDP_ACTIVE; - - if (PREDICT_FALSE (udp0->checksum)) - { - sum0 = udp0->checksum; - sum0 = - ip_csum_update (sum0, old_addr0.as_u32, new_addr0.as_u32, - ip4_header_t, - dst_address /* changed member */ ); - sum0 = - ip_csum_update (sum0, old_port0, new_port0, - ip4_header_t /* cheat */ , - length /* changed member */ ); - udp0->checksum = ip_csum_fold (sum0); - } - } - - switch (ses0->state) - { - case DET44_SESSION_UDP_ACTIVE: - ses0->expire = now + dm->timeouts.udp; - break; - case DET44_SESSION_TCP_SYN_SENT: - case DET44_SESSION_TCP_FIN_WAIT: - case DET44_SESSION_TCP_CLOSE_WAIT: - case DET44_SESSION_TCP_LAST_ACK: - ses0->expire = now + dm->timeouts.tcp.transitory; - break; - case DET44_SESSION_TCP_ESTABLISHED: - ses0->expire = now + dm->timeouts.tcp.established; - break; - } + dst_address /* changed member */ ); + sum0 = ip_csum_update (sum0, old_port0, new_port0, + ip4_header_t /* cheat */ , + length /* changed member */ ); + mss_clamping (dm->mss_clamping, tcp0, &sum0); + tcp0->checksum = ip_csum_fold (sum0); + } + else + { + ses0->state = DET44_SESSION_UDP_ACTIVE; - trace00: - if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) - && (b0->flags & VLIB_BUFFER_IS_TRACED))) + if (PREDICT_FALSE (udp0->checksum)) { - det44_in2out_trace_t *t = - vlib_add_trace (vm, node, b0, sizeof (*t)); - t->sw_if_index = sw_if_index0; - t->next_index = next0; - t->session_index = ~0; - if (ses0) - t->session_index = ses0 - mp0->sessions; + sum0 = udp0->checksum; + sum0 = + ip_csum_update (sum0, old_addr0.as_u32, new_addr0.as_u32, + ip4_header_t, + dst_address /* changed member */ ); + sum0 = + ip_csum_update (sum0, old_port0, new_port0, + ip4_header_t /* cheat */ , + length /* changed member */ ); + udp0->checksum = ip_csum_fold (sum0); } + } - pkts_processed += next0 != DET44_IN2OUT_NEXT_DROP; + switch (ses0->state) + { + case DET44_SESSION_UDP_ACTIVE: + ses0->expire = now + dm->timeouts.udp; + break; + case DET44_SESSION_TCP_SYN_SENT: + case DET44_SESSION_TCP_FIN_WAIT: + case DET44_SESSION_TCP_CLOSE_WAIT: + case DET44_SESSION_TCP_LAST_ACK: + ses0->expire = now + dm->timeouts.tcp.transitory; + break; + case DET44_SESSION_TCP_ESTABLISHED: + ses0->expire = now + dm->timeouts.tcp.established; + break; + } - /* 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); + trace00: + if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) + && (b0->flags & VLIB_BUFFER_IS_TRACED))) + { + det44_in2out_trace_t *t = + vlib_add_trace (vm, node, b0, sizeof (*t)); + t->sw_if_index = sw_if_index0; + t->next_index = next0; + t->session_index = ~0; + if (ses0) + t->session_index = ses0 - mp0->sessions; } - vlib_put_next_frame (vm, node, next_index, n_left_to_next); + pkts_processed += next0 != DET44_IN2OUT_NEXT_DROP; + + n_left_from--; + next[0] = next0; + next++; } + vlib_buffer_enqueue_to_next (vm, node, from, (u16 *) nexts, + frame->n_vectors); + vlib_node_increment_counter (vm, dm->in2out_node_index, DET44_IN2OUT_ERROR_IN2OUT_PACKETS, pkts_processed); diff --git a/src/plugins/nat/det44/det44_out2in.c b/src/plugins/nat/det44/det44_out2in.c index 5ee28777b84..48b816bca56 100644 --- a/src/plugins/nat/det44/det44_out2in.c +++ b/src/plugins/nat/det44/det44_out2in.c @@ -368,469 +368,446 @@ VLIB_NODE_FN (det44_out2in_node) (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame) { - u32 n_left_from, *from, *to_next; - det44_out2in_next_t next_index; + u32 n_left_from, *from; u32 pkts_processed = 0; det44_main_t *dm = &det44_main; u32 thread_index = vm->thread_index; from = vlib_frame_vector_args (frame); n_left_from = frame->n_vectors; - next_index = node->cached_next_index; - while (n_left_from > 0) + vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b = bufs; + u16 nexts[VLIB_FRAME_SIZE], *next = nexts; + vlib_get_buffers (vm, from, b, n_left_from); + + while (n_left_from >= 2) { - u32 n_left_to_next; + vlib_buffer_t *b0, *b1; + u32 next0 = DET44_OUT2IN_NEXT_LOOKUP; + u32 next1 = DET44_OUT2IN_NEXT_LOOKUP; + u32 sw_if_index0, sw_if_index1; + ip4_header_t *ip0, *ip1; + ip_csum_t sum0, sum1; + ip4_address_t new_addr0, old_addr0, new_addr1, old_addr1; + u16 new_port0, old_port0, old_port1, new_port1; + udp_header_t *udp0, *udp1; + tcp_header_t *tcp0, *tcp1; + u32 proto0, proto1; + snat_det_out_key_t key0, key1; + snat_det_map_t *mp0, *mp1; + snat_det_session_t *ses0 = 0, *ses1 = 0; + u32 rx_fib_index0, rx_fib_index1; + icmp46_header_t *icmp0, *icmp1; + + b0 = *b; + b++; + b1 = *b; + b++; + + /* Prefetch next iteration. */ + if (PREDICT_TRUE (n_left_from >= 4)) + { + vlib_buffer_t *p2, *p3; + + p2 = *b; + p3 = *(b + 1); + + vlib_prefetch_buffer_header (p2, LOAD); + vlib_prefetch_buffer_header (p3, LOAD); + + CLIB_PREFETCH (p2->data, CLIB_CACHE_LINE_BYTES, LOAD); + CLIB_PREFETCH (p3->data, CLIB_CACHE_LINE_BYTES, LOAD); + } + - vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); + ip0 = vlib_buffer_get_current (b0); + udp0 = ip4_next_header (ip0); + tcp0 = (tcp_header_t *) udp0; - while (n_left_from >= 4 && n_left_to_next >= 2) + sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX]; + + if (PREDICT_FALSE (ip0->ttl == 1)) { - u32 bi0, bi1; - vlib_buffer_t *b0, *b1; - u32 next0 = DET44_OUT2IN_NEXT_LOOKUP; - u32 next1 = DET44_OUT2IN_NEXT_LOOKUP; - u32 sw_if_index0, sw_if_index1; - ip4_header_t *ip0, *ip1; - ip_csum_t sum0, sum1; - ip4_address_t new_addr0, old_addr0, new_addr1, old_addr1; - u16 new_port0, old_port0, old_port1, new_port1; - udp_header_t *udp0, *udp1; - tcp_header_t *tcp0, *tcp1; - u32 proto0, proto1; - snat_det_out_key_t key0, key1; - snat_det_map_t *mp0, *mp1; - snat_det_session_t *ses0 = 0, *ses1 = 0; - u32 rx_fib_index0, rx_fib_index1; - icmp46_header_t *icmp0, *icmp1; - - /* 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, LOAD); - CLIB_PREFETCH (p3->data, CLIB_CACHE_LINE_BYTES, LOAD); - } - - /* 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); - - ip0 = vlib_buffer_get_current (b0); - udp0 = ip4_next_header (ip0); - tcp0 = (tcp_header_t *) udp0; - - sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX]; - - 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 = DET44_OUT2IN_NEXT_ICMP_ERROR; - goto trace0; - } + 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 = DET44_OUT2IN_NEXT_ICMP_ERROR; + goto trace0; + } - proto0 = ip_proto_to_nat_proto (ip0->protocol); + proto0 = ip_proto_to_nat_proto (ip0->protocol); - if (PREDICT_FALSE (proto0 == NAT_PROTOCOL_ICMP)) - { - rx_fib_index0 = - ip4_fib_table_get_index_for_sw_if_index (sw_if_index0); - icmp0 = (icmp46_header_t *) udp0; - - next0 = det44_icmp_out2in (b0, ip0, icmp0, sw_if_index0, - rx_fib_index0, node, next0, - thread_index, &ses0, &mp0); - goto trace0; - } + if (PREDICT_FALSE (proto0 == NAT_PROTOCOL_ICMP)) + { + rx_fib_index0 = + ip4_fib_table_get_index_for_sw_if_index (sw_if_index0); + icmp0 = (icmp46_header_t *) udp0; + + next0 = det44_icmp_out2in (b0, ip0, icmp0, sw_if_index0, + rx_fib_index0, node, next0, + thread_index, &ses0, &mp0); + goto trace0; + } - key0.ext_host_addr = ip0->src_address; - key0.ext_host_port = tcp0->src; - key0.out_port = tcp0->dst; + key0.ext_host_addr = ip0->src_address; + key0.ext_host_port = tcp0->src; + key0.out_port = tcp0->dst; - mp0 = snat_det_map_by_out (&ip0->dst_address); - if (PREDICT_FALSE (!mp0)) - { - det44_log_info ("unknown dst address: %U", - format_ip4_address, &ip0->dst_address); - next0 = DET44_OUT2IN_NEXT_DROP; - b0->error = node->errors[DET44_OUT2IN_ERROR_NO_TRANSLATION]; - goto trace0; - } + mp0 = snat_det_map_by_out (&ip0->dst_address); + if (PREDICT_FALSE (!mp0)) + { + det44_log_info ("unknown dst address: %U", + format_ip4_address, &ip0->dst_address); + next0 = DET44_OUT2IN_NEXT_DROP; + b0->error = node->errors[DET44_OUT2IN_ERROR_NO_TRANSLATION]; + goto trace0; + } - snat_det_reverse (mp0, &ip0->dst_address, - clib_net_to_host_u16 (tcp0->dst), &new_addr0); + snat_det_reverse (mp0, &ip0->dst_address, + clib_net_to_host_u16 (tcp0->dst), &new_addr0); - ses0 = snat_det_get_ses_by_out (mp0, &new_addr0, key0.as_u64); - if (PREDICT_FALSE (!ses0)) - { - det44_log_info ("no match src %U:%d dst %U:%d for user %U", - format_ip4_address, &ip0->src_address, - clib_net_to_host_u16 (tcp0->src), - format_ip4_address, &ip0->dst_address, - clib_net_to_host_u16 (tcp0->dst), - format_ip4_address, &new_addr0); - next0 = DET44_OUT2IN_NEXT_DROP; - b0->error = node->errors[DET44_OUT2IN_ERROR_NO_TRANSLATION]; - goto trace0; - } - old_port0 = udp0->dst_port; - udp0->dst_port = new_port0 = ses0->in_port; + ses0 = snat_det_get_ses_by_out (mp0, &new_addr0, key0.as_u64); + if (PREDICT_FALSE (!ses0)) + { + det44_log_info ("no match src %U:%d dst %U:%d for user %U", + format_ip4_address, &ip0->src_address, + clib_net_to_host_u16 (tcp0->src), + format_ip4_address, &ip0->dst_address, + clib_net_to_host_u16 (tcp0->dst), + format_ip4_address, &new_addr0); + next0 = DET44_OUT2IN_NEXT_DROP; + b0->error = node->errors[DET44_OUT2IN_ERROR_NO_TRANSLATION]; + goto trace0; + } + old_port0 = udp0->dst_port; + udp0->dst_port = new_port0 = ses0->in_port; + + old_addr0 = ip0->dst_address; + ip0->dst_address = new_addr0; + vnet_buffer (b0)->sw_if_index[VLIB_TX] = dm->inside_fib_index; - old_addr0 = ip0->dst_address; - ip0->dst_address = new_addr0; - vnet_buffer (b0)->sw_if_index[VLIB_TX] = dm->inside_fib_index; + sum0 = ip0->checksum; + sum0 = ip_csum_update (sum0, old_addr0.as_u32, new_addr0.as_u32, + ip4_header_t, dst_address /* changed member */ ); + ip0->checksum = ip_csum_fold (sum0); - sum0 = ip0->checksum; + if (PREDICT_TRUE (proto0 == NAT_PROTOCOL_TCP)) + { + if (tcp0->flags & TCP_FLAG_FIN + && ses0->state == DET44_SESSION_TCP_ESTABLISHED) + ses0->state = DET44_SESSION_TCP_CLOSE_WAIT; + else if (tcp0->flags & TCP_FLAG_ACK + && ses0->state == DET44_SESSION_TCP_LAST_ACK) + snat_det_ses_close (mp0, ses0); + + sum0 = tcp0->checksum; sum0 = ip_csum_update (sum0, old_addr0.as_u32, new_addr0.as_u32, ip4_header_t, dst_address /* changed member */ ); - ip0->checksum = ip_csum_fold (sum0); - - if (PREDICT_TRUE (proto0 == NAT_PROTOCOL_TCP)) - { - if (tcp0->flags & TCP_FLAG_FIN - && ses0->state == DET44_SESSION_TCP_ESTABLISHED) - ses0->state = DET44_SESSION_TCP_CLOSE_WAIT; - else if (tcp0->flags & TCP_FLAG_ACK - && ses0->state == DET44_SESSION_TCP_LAST_ACK) - snat_det_ses_close (mp0, ses0); - - sum0 = tcp0->checksum; - sum0 = ip_csum_update (sum0, old_addr0.as_u32, new_addr0.as_u32, - ip4_header_t, - dst_address /* changed member */ ); - sum0 = ip_csum_update (sum0, old_port0, new_port0, - ip4_header_t /* cheat */ , - length /* changed member */ ); - tcp0->checksum = ip_csum_fold (sum0); - } - else if (udp0->checksum) - { - sum0 = udp0->checksum; - sum0 = ip_csum_update (sum0, old_addr0.as_u32, new_addr0.as_u32, - ip4_header_t, - dst_address /* changed member */ ); - sum0 = ip_csum_update (sum0, old_port0, new_port0, - ip4_header_t /* cheat */ , - length /* changed member */ ); - udp0->checksum = ip_csum_fold (sum0); - } + sum0 = ip_csum_update (sum0, old_port0, new_port0, + ip4_header_t /* cheat */ , + length /* changed member */ ); + tcp0->checksum = ip_csum_fold (sum0); + } + else if (udp0->checksum) + { + sum0 = udp0->checksum; + sum0 = ip_csum_update (sum0, old_addr0.as_u32, new_addr0.as_u32, + ip4_header_t, + dst_address /* changed member */ ); + sum0 = ip_csum_update (sum0, old_port0, new_port0, + ip4_header_t /* cheat */ , + length /* changed member */ ); + udp0->checksum = ip_csum_fold (sum0); + } - trace0: + trace0: - if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) - && (b0->flags & VLIB_BUFFER_IS_TRACED))) - { - det44_out2in_trace_t *t = - vlib_add_trace (vm, node, b0, sizeof (*t)); - t->sw_if_index = sw_if_index0; - t->next_index = next0; - t->session_index = ~0; - if (ses0) - t->session_index = ses0 - mp0->sessions; - } + if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) + && (b0->flags & VLIB_BUFFER_IS_TRACED))) + { + det44_out2in_trace_t *t = + vlib_add_trace (vm, node, b0, sizeof (*t)); + t->sw_if_index = sw_if_index0; + t->next_index = next0; + t->session_index = ~0; + if (ses0) + t->session_index = ses0 - mp0->sessions; + } - pkts_processed += next0 != DET44_OUT2IN_NEXT_DROP; + pkts_processed += next0 != DET44_OUT2IN_NEXT_DROP; - b1 = vlib_get_buffer (vm, bi1); + ip1 = vlib_buffer_get_current (b1); + udp1 = ip4_next_header (ip1); + tcp1 = (tcp_header_t *) udp1; - ip1 = vlib_buffer_get_current (b1); - udp1 = ip4_next_header (ip1); - tcp1 = (tcp_header_t *) udp1; + sw_if_index1 = vnet_buffer (b1)->sw_if_index[VLIB_RX]; - sw_if_index1 = vnet_buffer (b1)->sw_if_index[VLIB_RX]; + 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 = DET44_OUT2IN_NEXT_ICMP_ERROR; + goto trace1; + } - 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 = DET44_OUT2IN_NEXT_ICMP_ERROR; - goto trace1; - } + proto1 = ip_proto_to_nat_proto (ip1->protocol); - proto1 = ip_proto_to_nat_proto (ip1->protocol); + if (PREDICT_FALSE (proto1 == NAT_PROTOCOL_ICMP)) + { + rx_fib_index1 = + ip4_fib_table_get_index_for_sw_if_index (sw_if_index1); + icmp1 = (icmp46_header_t *) udp1; + + next1 = det44_icmp_out2in (b1, ip1, icmp1, sw_if_index1, + rx_fib_index1, node, next1, + thread_index, &ses1, &mp1); + goto trace1; + } - if (PREDICT_FALSE (proto1 == NAT_PROTOCOL_ICMP)) - { - rx_fib_index1 = - ip4_fib_table_get_index_for_sw_if_index (sw_if_index1); - icmp1 = (icmp46_header_t *) udp1; - - next1 = det44_icmp_out2in (b1, ip1, icmp1, sw_if_index1, - rx_fib_index1, node, next1, - thread_index, &ses1, &mp1); - goto trace1; - } + key1.ext_host_addr = ip1->src_address; + key1.ext_host_port = tcp1->src; + key1.out_port = tcp1->dst; - key1.ext_host_addr = ip1->src_address; - key1.ext_host_port = tcp1->src; - key1.out_port = tcp1->dst; + mp1 = snat_det_map_by_out (&ip1->dst_address); + if (PREDICT_FALSE (!mp1)) + { + det44_log_info ("unknown dst address: %U", + format_ip4_address, &ip1->dst_address); + next1 = DET44_OUT2IN_NEXT_DROP; + b1->error = node->errors[DET44_OUT2IN_ERROR_NO_TRANSLATION]; + goto trace1; + } - mp1 = snat_det_map_by_out (&ip1->dst_address); - if (PREDICT_FALSE (!mp1)) - { - det44_log_info ("unknown dst address: %U", - format_ip4_address, &ip1->dst_address); - next1 = DET44_OUT2IN_NEXT_DROP; - b1->error = node->errors[DET44_OUT2IN_ERROR_NO_TRANSLATION]; - goto trace1; - } + snat_det_reverse (mp1, &ip1->dst_address, + clib_net_to_host_u16 (tcp1->dst), &new_addr1); - snat_det_reverse (mp1, &ip1->dst_address, - clib_net_to_host_u16 (tcp1->dst), &new_addr1); + ses1 = snat_det_get_ses_by_out (mp1, &new_addr1, key1.as_u64); + if (PREDICT_FALSE (!ses1)) + { + det44_log_info ("no match src %U:%d dst %U:%d for user %U", + format_ip4_address, &ip1->src_address, + clib_net_to_host_u16 (tcp1->src), + format_ip4_address, &ip1->dst_address, + clib_net_to_host_u16 (tcp1->dst), + format_ip4_address, &new_addr1); + next1 = DET44_OUT2IN_NEXT_DROP; + b1->error = node->errors[DET44_OUT2IN_ERROR_NO_TRANSLATION]; + goto trace1; + } + old_port1 = udp1->dst_port; + udp1->dst_port = new_port1 = ses1->in_port; - ses1 = snat_det_get_ses_by_out (mp1, &new_addr1, key1.as_u64); - if (PREDICT_FALSE (!ses1)) - { - det44_log_info ("no match src %U:%d dst %U:%d for user %U", - format_ip4_address, &ip1->src_address, - clib_net_to_host_u16 (tcp1->src), - format_ip4_address, &ip1->dst_address, - clib_net_to_host_u16 (tcp1->dst), - format_ip4_address, &new_addr1); - next1 = DET44_OUT2IN_NEXT_DROP; - b1->error = node->errors[DET44_OUT2IN_ERROR_NO_TRANSLATION]; - goto trace1; - } - old_port1 = udp1->dst_port; - udp1->dst_port = new_port1 = ses1->in_port; + old_addr1 = ip1->dst_address; + ip1->dst_address = new_addr1; + vnet_buffer (b1)->sw_if_index[VLIB_TX] = dm->inside_fib_index; - old_addr1 = ip1->dst_address; - ip1->dst_address = new_addr1; - vnet_buffer (b1)->sw_if_index[VLIB_TX] = dm->inside_fib_index; + sum1 = ip1->checksum; + sum1 = ip_csum_update (sum1, old_addr1.as_u32, new_addr1.as_u32, + ip4_header_t, dst_address /* changed member */ ); + ip1->checksum = ip_csum_fold (sum1); - sum1 = ip1->checksum; + if (PREDICT_TRUE (proto1 == NAT_PROTOCOL_TCP)) + { + if (tcp1->flags & TCP_FLAG_FIN + && ses1->state == DET44_SESSION_TCP_ESTABLISHED) + ses1->state = DET44_SESSION_TCP_CLOSE_WAIT; + else if (tcp1->flags & TCP_FLAG_ACK + && ses1->state == DET44_SESSION_TCP_LAST_ACK) + snat_det_ses_close (mp1, ses1); + + sum1 = tcp1->checksum; + sum1 = ip_csum_update (sum1, old_addr1.as_u32, new_addr1.as_u32, + ip4_header_t, + dst_address /* changed member */ ); + sum1 = ip_csum_update (sum1, old_port1, new_port1, + ip4_header_t /* cheat */ , + length /* changed member */ ); + tcp1->checksum = ip_csum_fold (sum1); + } + else if (udp1->checksum) + { + sum1 = udp1->checksum; sum1 = ip_csum_update (sum1, old_addr1.as_u32, new_addr1.as_u32, ip4_header_t, dst_address /* changed member */ ); - ip1->checksum = ip_csum_fold (sum1); + sum1 = ip_csum_update (sum1, old_port1, new_port1, + ip4_header_t /* cheat */ , + length /* changed member */ ); + udp1->checksum = ip_csum_fold (sum1); + } - if (PREDICT_TRUE (proto1 == NAT_PROTOCOL_TCP)) - { - if (tcp1->flags & TCP_FLAG_FIN - && ses1->state == DET44_SESSION_TCP_ESTABLISHED) - ses1->state = DET44_SESSION_TCP_CLOSE_WAIT; - else if (tcp1->flags & TCP_FLAG_ACK - && ses1->state == DET44_SESSION_TCP_LAST_ACK) - snat_det_ses_close (mp1, ses1); - - sum1 = tcp1->checksum; - sum1 = ip_csum_update (sum1, old_addr1.as_u32, new_addr1.as_u32, - ip4_header_t, - dst_address /* changed member */ ); - sum1 = ip_csum_update (sum1, old_port1, new_port1, - ip4_header_t /* cheat */ , - length /* changed member */ ); - tcp1->checksum = ip_csum_fold (sum1); - } - else if (udp1->checksum) - { - sum1 = udp1->checksum; - sum1 = ip_csum_update (sum1, old_addr1.as_u32, new_addr1.as_u32, - ip4_header_t, - dst_address /* changed member */ ); - sum1 = ip_csum_update (sum1, old_port1, new_port1, - ip4_header_t /* cheat */ , - length /* changed member */ ); - udp1->checksum = ip_csum_fold (sum1); - } + trace1: - trace1: + if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) + && (b1->flags & VLIB_BUFFER_IS_TRACED))) + { + det44_out2in_trace_t *t = + vlib_add_trace (vm, node, b1, sizeof (*t)); + t->sw_if_index = sw_if_index1; + t->next_index = next1; + t->session_index = ~0; + if (ses1) + t->session_index = ses1 - mp1->sessions; + } - if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) - && (b1->flags & VLIB_BUFFER_IS_TRACED))) - { - det44_out2in_trace_t *t = - vlib_add_trace (vm, node, b1, sizeof (*t)); - t->sw_if_index = sw_if_index1; - t->next_index = next1; - t->session_index = ~0; - if (ses1) - t->session_index = ses1 - mp1->sessions; - } + pkts_processed += next1 != DET44_OUT2IN_NEXT_DROP; - pkts_processed += next1 != DET44_OUT2IN_NEXT_DROP; + n_left_from -= 2; + next[0] = next0; + next[1] = next1; + next += 2; + } - /* 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) + { + vlib_buffer_t *b0; + u32 next0 = DET44_OUT2IN_NEXT_LOOKUP; + u32 sw_if_index0; + ip4_header_t *ip0; + ip_csum_t sum0; + ip4_address_t new_addr0, old_addr0; + u16 new_port0, old_port0; + udp_header_t *udp0; + tcp_header_t *tcp0; + u32 proto0; + snat_det_out_key_t key0; + snat_det_map_t *mp0; + snat_det_session_t *ses0 = 0; + u32 rx_fib_index0; + icmp46_header_t *icmp0; + + b0 = *b; + b++; + + ip0 = vlib_buffer_get_current (b0); + udp0 = ip4_next_header (ip0); + tcp0 = (tcp_header_t *) udp0; + + sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX]; + + 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 = DET44_OUT2IN_NEXT_ICMP_ERROR; + goto trace00; } - while (n_left_from > 0 && n_left_to_next > 0) - { - u32 bi0; - vlib_buffer_t *b0; - u32 next0 = DET44_OUT2IN_NEXT_LOOKUP; - u32 sw_if_index0; - ip4_header_t *ip0; - ip_csum_t sum0; - ip4_address_t new_addr0, old_addr0; - u16 new_port0, old_port0; - udp_header_t *udp0; - tcp_header_t *tcp0; - u32 proto0; - snat_det_out_key_t key0; - snat_det_map_t *mp0; - snat_det_session_t *ses0 = 0; - u32 rx_fib_index0; - icmp46_header_t *icmp0; - - /* speculatively enqueue b0 to the current next frame */ - bi0 = from[0]; - to_next[0] = bi0; - from += 1; - to_next += 1; - n_left_from -= 1; - n_left_to_next -= 1; - - b0 = vlib_get_buffer (vm, bi0); - - ip0 = vlib_buffer_get_current (b0); - udp0 = ip4_next_header (ip0); - tcp0 = (tcp_header_t *) udp0; - - sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX]; - - 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 = DET44_OUT2IN_NEXT_ICMP_ERROR; - goto trace00; - } + proto0 = ip_proto_to_nat_proto (ip0->protocol); - proto0 = ip_proto_to_nat_proto (ip0->protocol); + if (PREDICT_FALSE (proto0 == NAT_PROTOCOL_ICMP)) + { + rx_fib_index0 = + ip4_fib_table_get_index_for_sw_if_index (sw_if_index0); + icmp0 = (icmp46_header_t *) udp0; + + next0 = det44_icmp_out2in (b0, ip0, icmp0, sw_if_index0, + rx_fib_index0, node, next0, + thread_index, &ses0, &mp0); + goto trace00; + } - if (PREDICT_FALSE (proto0 == NAT_PROTOCOL_ICMP)) - { - rx_fib_index0 = - ip4_fib_table_get_index_for_sw_if_index (sw_if_index0); - icmp0 = (icmp46_header_t *) udp0; - - next0 = det44_icmp_out2in (b0, ip0, icmp0, sw_if_index0, - rx_fib_index0, node, next0, - thread_index, &ses0, &mp0); - goto trace00; - } + key0.ext_host_addr = ip0->src_address; + key0.ext_host_port = tcp0->src; + key0.out_port = tcp0->dst; - key0.ext_host_addr = ip0->src_address; - key0.ext_host_port = tcp0->src; - key0.out_port = tcp0->dst; + mp0 = snat_det_map_by_out (&ip0->dst_address); + if (PREDICT_FALSE (!mp0)) + { + det44_log_info ("unknown dst address: %U", + format_ip4_address, &ip0->dst_address); + next0 = DET44_OUT2IN_NEXT_DROP; + b0->error = node->errors[DET44_OUT2IN_ERROR_NO_TRANSLATION]; + goto trace00; + } - mp0 = snat_det_map_by_out (&ip0->dst_address); - if (PREDICT_FALSE (!mp0)) - { - det44_log_info ("unknown dst address: %U", - format_ip4_address, &ip0->dst_address); - next0 = DET44_OUT2IN_NEXT_DROP; - b0->error = node->errors[DET44_OUT2IN_ERROR_NO_TRANSLATION]; - goto trace00; - } + snat_det_reverse (mp0, &ip0->dst_address, + clib_net_to_host_u16 (tcp0->dst), &new_addr0); - snat_det_reverse (mp0, &ip0->dst_address, - clib_net_to_host_u16 (tcp0->dst), &new_addr0); + ses0 = snat_det_get_ses_by_out (mp0, &new_addr0, key0.as_u64); + if (PREDICT_FALSE (!ses0)) + { + det44_log_info ("no match src %U:%d dst %U:%d for user %U", + format_ip4_address, &ip0->src_address, + clib_net_to_host_u16 (tcp0->src), + format_ip4_address, &ip0->dst_address, + clib_net_to_host_u16 (tcp0->dst), + format_ip4_address, &new_addr0); + next0 = DET44_OUT2IN_NEXT_DROP; + b0->error = node->errors[DET44_OUT2IN_ERROR_NO_TRANSLATION]; + goto trace00; + } + old_port0 = udp0->dst_port; + udp0->dst_port = new_port0 = ses0->in_port; - ses0 = snat_det_get_ses_by_out (mp0, &new_addr0, key0.as_u64); - if (PREDICT_FALSE (!ses0)) - { - det44_log_info ("no match src %U:%d dst %U:%d for user %U", - format_ip4_address, &ip0->src_address, - clib_net_to_host_u16 (tcp0->src), - format_ip4_address, &ip0->dst_address, - clib_net_to_host_u16 (tcp0->dst), - format_ip4_address, &new_addr0); - next0 = DET44_OUT2IN_NEXT_DROP; - b0->error = node->errors[DET44_OUT2IN_ERROR_NO_TRANSLATION]; - goto trace00; - } - old_port0 = udp0->dst_port; - udp0->dst_port = new_port0 = ses0->in_port; + old_addr0 = ip0->dst_address; + ip0->dst_address = new_addr0; + vnet_buffer (b0)->sw_if_index[VLIB_TX] = dm->inside_fib_index; - old_addr0 = ip0->dst_address; - ip0->dst_address = new_addr0; - vnet_buffer (b0)->sw_if_index[VLIB_TX] = dm->inside_fib_index; + sum0 = ip0->checksum; + sum0 = ip_csum_update (sum0, old_addr0.as_u32, new_addr0.as_u32, + ip4_header_t, dst_address /* changed member */ ); + ip0->checksum = ip_csum_fold (sum0); - sum0 = ip0->checksum; + if (PREDICT_TRUE (proto0 == NAT_PROTOCOL_TCP)) + { + if (tcp0->flags & TCP_FLAG_FIN + && ses0->state == DET44_SESSION_TCP_ESTABLISHED) + ses0->state = DET44_SESSION_TCP_CLOSE_WAIT; + else if (tcp0->flags & TCP_FLAG_ACK + && ses0->state == DET44_SESSION_TCP_LAST_ACK) + snat_det_ses_close (mp0, ses0); + + sum0 = tcp0->checksum; sum0 = ip_csum_update (sum0, old_addr0.as_u32, new_addr0.as_u32, ip4_header_t, dst_address /* changed member */ ); - ip0->checksum = ip_csum_fold (sum0); - - if (PREDICT_TRUE (proto0 == NAT_PROTOCOL_TCP)) - { - if (tcp0->flags & TCP_FLAG_FIN - && ses0->state == DET44_SESSION_TCP_ESTABLISHED) - ses0->state = DET44_SESSION_TCP_CLOSE_WAIT; - else if (tcp0->flags & TCP_FLAG_ACK - && ses0->state == DET44_SESSION_TCP_LAST_ACK) - snat_det_ses_close (mp0, ses0); - - sum0 = tcp0->checksum; - sum0 = ip_csum_update (sum0, old_addr0.as_u32, new_addr0.as_u32, - ip4_header_t, - dst_address /* changed member */ ); - sum0 = ip_csum_update (sum0, old_port0, new_port0, - ip4_header_t /* cheat */ , - length /* changed member */ ); - tcp0->checksum = ip_csum_fold (sum0); - } - else if (udp0->checksum) - { - sum0 = udp0->checksum; - sum0 = ip_csum_update (sum0, old_addr0.as_u32, new_addr0.as_u32, - ip4_header_t, - dst_address /* changed member */ ); - sum0 = ip_csum_update (sum0, old_port0, new_port0, - ip4_header_t /* cheat */ , - length /* changed member */ ); - udp0->checksum = ip_csum_fold (sum0); - } - - trace00: - - if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) - && (b0->flags & VLIB_BUFFER_IS_TRACED))) - { - det44_out2in_trace_t *t = - vlib_add_trace (vm, node, b0, sizeof (*t)); - t->sw_if_index = sw_if_index0; - t->next_index = next0; - t->session_index = ~0; - if (ses0) - t->session_index = ses0 - mp0->sessions; - } + sum0 = ip_csum_update (sum0, old_port0, new_port0, + ip4_header_t /* cheat */ , + length /* changed member */ ); + tcp0->checksum = ip_csum_fold (sum0); + } + else if (udp0->checksum) + { + sum0 = udp0->checksum; + sum0 = ip_csum_update (sum0, old_addr0.as_u32, new_addr0.as_u32, + ip4_header_t, + dst_address /* changed member */ ); + sum0 = ip_csum_update (sum0, old_port0, new_port0, + ip4_header_t /* cheat */ , + length /* changed member */ ); + udp0->checksum = ip_csum_fold (sum0); + } - pkts_processed += next0 != DET44_OUT2IN_NEXT_DROP; + trace00: - /* 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 (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) + && (b0->flags & VLIB_BUFFER_IS_TRACED))) + { + det44_out2in_trace_t *t = + vlib_add_trace (vm, node, b0, sizeof (*t)); + t->sw_if_index = sw_if_index0; + t->next_index = next0; + t->session_index = ~0; + if (ses0) + t->session_index = ses0 - mp0->sessions; } - vlib_put_next_frame (vm, node, next_index, n_left_to_next); + pkts_processed += next0 != DET44_OUT2IN_NEXT_DROP; + + n_left_from--; + next[0] = next0; + next++; } + vlib_buffer_enqueue_to_next (vm, node, from, (u16 *) nexts, + frame->n_vectors); + vlib_node_increment_counter (vm, dm->out2in_node_index, DET44_OUT2IN_ERROR_OUT2IN_PACKETS, |