- u32 bi0, bi1;
- vlib_buffer_t *b0, *b1;
- u32 next0 = SNAT_OUT2IN_NEXT_LOOKUP;
- u32 next1 = SNAT_OUT2IN_NEXT_LOOKUP;
- u32 sw_if_index0, sw_if_index1;
- ip4_header_t *ip0, *ip1;
- ip_csum_t sum0, sum1;
- u32 new_addr0, old_addr0;
- u16 new_port0, old_port0;
- u32 new_addr1, old_addr1;
- u16 new_port1, old_port1;
- udp_header_t *udp0, *udp1;
- tcp_header_t *tcp0, *tcp1;
- icmp46_header_t *icmp0, *icmp1;
- u32 rx_fib_index0, rx_fib_index1;
- u32 proto0, proto1;
- snat_session_t *s0 = 0, *s1 = 0;
- clib_bihash_kv_8_8_t kv0, kv1, value0, value1;
- u8 identity_nat0, identity_nat1;
- ip4_address_t sm_addr0, sm_addr1;
- u16 sm_port0, sm_port1;
- u32 sm_fib_index0, sm_fib_index1;
-
- /* 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);
-
- vnet_buffer (b0)->snat.flags = 0;
- vnet_buffer (b1)->snat.flags = 0;
-
- ip0 = vlib_buffer_get_current (b0);
- udp0 = ip4_next_header (ip0);
- tcp0 = (tcp_header_t *) udp0;
- icmp0 = (icmp46_header_t *) udp0;
-
- sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
- rx_fib_index0 = vec_elt (sm->ip4_main->fib_index_by_sw_if_index,
- sw_if_index0);
-
- if (PREDICT_FALSE (ip0->ttl == 1))
- {
- vnet_buffer (b0)->sw_if_index[VLIB_TX] = (u32) ~ 0;
- icmp4_error_set_vnet_buffer (b0, ICMP4_time_exceeded,
- ICMP4_time_exceeded_ttl_exceeded_in_transit,
- 0);
- next0 = SNAT_OUT2IN_NEXT_ICMP_ERROR;
- goto trace0;
- }