csit - Integration tests

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Diffstat (limited to 'docs/report/dpdk_performance_tests/packet_throughput_graphs/2n-clx-x710.rst')

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docs/report/dpdk_performance_tests/packet_throughput_graphs/2n-clx-x710.rst

1 files changed, 12 insertions, 12 deletions

/* * Copyright (c) 2016 Cisco and/or its affiliates. * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at: * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #include <lb/lb.h> #include <vnet/fib/ip4_fib.h> #include <vnet/gre/packet.h> #include <lb/lbhash.h> #define foreach_lb_error \ _(NONE, "no error") \ _(PROTO_NOT_SUPPORTED, "protocol not supported") typedef enum { #define _(sym,str) LB_ERROR_##sym, foreach_lb_error #undef _ LB_N_ERROR, } lb_error_t; static char *lb_error_strings[] = { #define _(sym,string) string, foreach_lb_error #undef _ }; typedef struct { u32 vip_index; u32 as_index; } lb_trace_t; typedef struct { u32 vip_index; u32 node_port; } lb_nodeport_trace_t; typedef struct { u32 vip_index; u32 as_index; u32 rx_sw_if_index; u32 next_index; } lb_nat_trace_t; u8 * format_lb_trace (u8 * s, va_list * args) { lb_main_t *lbm = &lb_main; CLIB_UNUSED(vlib_main_t * vm) = va_arg (*args, vlib_main_t *); CLIB_UNUSED(vlib_node_t * node) = va_arg (*args, vlib_node_t *); lb_trace_t *t = va_arg (*args, lb_trace_t *); if (pool_is_free_index(lbm->vips, t->vip_index)) { s = format (s, "lb vip[%d]: This VIP was freed since capture\n"); } else { s = format (s, "lb vip[%d]: %U\n", t->vip_index, format_lb_vip, &lbm->vips[t->vip_index]); } if (pool_is_free_index(lbm->ass, t->as_index)) { s = format (s, "lb as[%d]: This AS was freed since capture\n"); } else { s = format (s, "lb as[%d]: %U\n", t->as_index, format_lb_as, &lbm->ass[t->as_index]); } return s; } u8 * format_lb_nat_trace (u8 * s, va_list * args) { lb_main_t *lbm = &lb_main; CLIB_UNUSED(vlib_main_t * vm) = va_arg (*args, vlib_main_t *); CLIB_UNUSED(vlib_node_t * node) = va_arg (*args, vlib_node_t *); lb_nat_trace_t *t = va_arg (*args, lb_nat_trace_t *); if (pool_is_free_index(lbm->vips, t->vip_index)) { s = format (s, "lb vip[%d]: This VIP was freed since capture\n"); } else { s = format (s, "lb vip[%d]: %U\n", t->vip_index, format_lb_vip, &lbm->vips[t->vip_index]); } if (pool_is_free_index(lbm->ass, t->as_index)) { s = format (s, "lb as[%d]: This AS was freed since capture\n"); } else { s = format (s, "lb as[%d]: %U\n", t->as_index, format_lb_as, &lbm->ass[t->as_index]); } s = format (s, "lb nat: rx_sw_if_index = %d, next_index = %d", t->rx_sw_if_index, t->next_index); return s; } lb_hash_t * lb_get_sticky_table (u32 thread_index) { lb_main_t *lbm = &lb_main; lb_hash_t *sticky_ht = lbm->per_cpu[thread_index].sticky_ht; //Check if size changed if (PREDICT_FALSE( sticky_ht && (lbm->per_cpu_sticky_buckets != lb_hash_nbuckets(sticky_ht)))) { //Dereference everything in there lb_hash_bucket_t *b; u32 i; lb_hash_foreach_entry(sticky_ht, b, i) { vlib_refcount_add (&lbm->as_refcount, thread_index, b->value[i], -1); vlib_refcount_add (&lbm->as_refcount, thread_index, 0, 1); } lb_hash_free (sticky_ht); sticky_ht = NULL; } //Create if necessary if (PREDICT_FALSE(sticky_ht == NULL)) { lbm->per_cpu[thread_index].sticky_ht = lb_hash_alloc ( lbm->per_cpu_sticky_buckets, lbm->flow_timeout); sticky_ht = lbm->per_cpu[thread_index].sticky_ht; clib_warning("Regenerated sticky table %p", sticky_ht); } ASSERT(sticky_ht); //Update timeout sticky_ht->timeout = lbm->flow_timeout; return sticky_ht; } u64 lb_node_get_other_ports4 (ip4_header_t *ip40) { return 0; } u64 lb_node_get_other_ports6 (ip6_header_t *ip60) { return 0; } static_always_inline void lb_node_get_hash (lb_main_t *lbm, vlib_buffer_t *p, u8 is_input_v4, u32 *hash, u32 *vip_idx, u8 per_port_vip) { vip_port_key_t key; clib_bihash_kv_8_8_t kv, value; /* For vip case, retrieve vip index for ip lookup */ *vip_idx = vnet_buffer (p)->ip.adj_index[VLIB_TX]; if (per_port_vip) { /* For per-port-vip case, ip lookup stores placeholder index */ key.vip_prefix_index = *vip_idx; } if (is_input_v4) { ip4_header_t *ip40; u64 ports; ip40 = vlib_buffer_get_current (p); if (PREDICT_TRUE( ip40->protocol == IP_PROTOCOL_TCP || ip40->protocol == IP_PROTOCOL_UDP)) ports = ((u64) ((udp_header_t *) (ip40 + 1))->src_port << 16) | ((u64) ((udp_header_t *) (ip40 + 1))->dst_port); else ports = lb_node_get_other_ports4 (ip40); *hash = lb_hash_hash (*((u64 *) &ip40->address_pair), ports, 0, 0, 0); if (per_port_vip) { key.protocol = ip40->protocol; key.port = (u16)(ports & 0xFFFF); } } else { ip6_header_t *ip60; ip60 = vlib_buffer_get_current (p); u64 ports; if (PREDICT_TRUE( ip60->protocol == IP_PROTOCOL_TCP || ip60->protocol == IP_PROTOCOL_UDP)) ports = ((u64) ((udp_header_t *) (ip60 + 1))->src_port << 16) | ((u64) ((udp_header_t *) (ip60 + 1))->dst_port); else ports = lb_node_get_other_ports6 (ip60); *hash = lb_hash_hash (ip60->src_address.as_u64[0], ip60->src_address.as_u64[1], ip60->dst_address.as_u64[0], ip60->dst_address.as_u64[1], ports); if (per_port_vip) { key.protocol = ip60->protocol; key.port = (u16)(ports & 0xFFFF); } } /* For per-port-vip case, retrieve vip index for vip_port_filter table */ if (per_port_vip) { kv.key = key.as_u64; if (clib_bihash_search_8_8(&lbm->vip_index_per_port, &kv, &value) < 0) { /* return default vip */ *vip_idx = 0; return; } *vip_idx = value.value; } } static_always_inline uword lb_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame, u8 is_input_v4, //Compile-time parameter stating that is input is v4 (or v6) lb_encap_type_t encap_type, //Compile-time parameter is GRE4/GRE6/L3DSR/NAT4/NAT6 u8 per_port_vip) //Compile-time parameter stating that is per_port_vip or not { lb_main_t *lbm = &lb_main; u32 n_left_from, *from, next_index, *to_next, n_left_to_next; u32 thread_index = vm->thread_index; u32 lb_time = lb_hash_time_now (vm); lb_hash_t *sticky_ht = lb_get_sticky_table (thread_index); from = vlib_frame_vector_args (frame); n_left_from = frame->n_vectors; next_index = node->cached_next_index; u32 nexthash0 = 0; u32 next_vip_idx0 = ~0; if (PREDICT_TRUE(n_left_from > 0)) { vlib_buffer_t *p0 = vlib_get_buffer (vm, from[0]); lb_node_get_hash (lbm, p0, is_input_v4, &nexthash0, &next_vip_idx0, per_port_vip); } while (n_left_from > 0) { 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 pi0; vlib_buffer_t *p0; lb_vip_t *vip0; u32 asindex0 = 0; u16 len0; u32 available_index0; u8 counter = 0; u32 hash0 = nexthash0; u32 vip_index0 = next_vip_idx0; u32 next0; if (PREDICT_TRUE(n_left_from > 1)) { vlib_buffer_t *p1 = vlib_get_buffer (vm, from[1]); //Compute next hash and prefetch bucket lb_node_get_hash (lbm, p1, is_input_v4, &nexthash0, &next_vip_idx0, per_port_vip); lb_hash_prefetch_bucket (sticky_ht, nexthash0); //Prefetch for encap, next CLIB_PREFETCH(vlib_buffer_get_current (p1) - 64, 64, STORE); } if (PREDICT_TRUE(n_left_from > 2)) { vlib_buffer_t *p2; p2 = vlib_get_buffer (vm, from[2]); /* prefetch packet header and data */ vlib_prefetch_buffer_header(p2, STORE); CLIB_PREFETCH(vlib_buffer_get_current (p2), 64, STORE); } pi0 = to_next[0] = from[0]; from += 1; n_left_from -= 1; to_next += 1; n_left_to_next -= 1; p0 = vlib_get_buffer (vm, pi0); vip0 = pool_elt_at_index(lbm->vips, vip_index0); if (is_input_v4) { ip4_header_t *ip40; ip40 = vlib_buffer_get_current (p0); len0 = clib_net_to_host_u16 (ip40->length); } else { ip6_header_t *ip60; ip60 = vlib_buffer_get_current (p0); len0 = clib_net_to_host_u16 (ip60->payload_length) + sizeof(ip6_header_t); } lb_hash_get (sticky_ht, hash0, vip_index0, lb_time, &available_index0, &asindex0); if (PREDICT_TRUE(asindex0 != 0)) { //Found an existing entry counter = LB_VIP_COUNTER_NEXT_PACKET; } else if (PREDICT_TRUE(available_index0 != ~0)) { //There is an available slot for a new flow asindex0 = vip0->new_flow_table[hash0 & vip0->new_flow_table_mask].as_index; counter = LB_VIP_COUNTER_FIRST_PACKET; counter = (asindex0 == 0) ? LB_VIP_COUNTER_NO_SERVER : counter; //TODO: There are race conditions with as0 and vip0 manipulation. //Configuration may be changed, vectors resized, etc... //Dereference previously used vlib_refcount_add ( &lbm->as_refcount, thread_index, lb_hash_available_value (sticky_ht, hash0, available_index0), -1); vlib_refcount_add (&lbm->as_refcount, thread_index, asindex0, 1); //Add sticky entry //Note that when there is no AS configured, an entry is configured anyway. //But no configured AS is not something that should happen lb_hash_put (sticky_ht, hash0, asindex0, vip_index0, available_index0, lb_time); } else { //Could not store new entry in the table asindex0 = vip0->new_flow_table[hash0 & vip0->new_flow_table_mask].as_index; counter = LB_VIP_COUNTER_UNTRACKED_PACKET; } vlib_increment_simple_counter ( &lbm->vip_counters[counter], thread_index, vip_index0, 1); //Now let's encap if ((encap_type == LB_ENCAP_TYPE_GRE4) || (encap_type == LB_ENCAP_TYPE_GRE6)) { gre_header_t *gre0; if (encap_type == LB_ENCAP_TYPE_GRE4) /* encap GRE4*/ { ip4_header_t *ip40; vlib_buffer_advance ( p0, -sizeof(ip4_header_t) - sizeof(gre_header_t)); ip40 = vlib_buffer_get_current (p0); gre0 = (gre_header_t *) (ip40 + 1); ip40->src_address = lbm->ip4_src_address; ip40->dst_address = lbm->ass[asindex0].address.ip4; ip40->ip_version_and_header_length = 0x45; ip40->ttl = 128; ip40->fragment_id = 0; ip40->flags_and_fragment_offset = 0; ip40->length = clib_host_to_net_u16 ( len0 + sizeof(gre_header_t) + sizeof(ip4_header_t)); ip40->protocol = IP_PROTOCOL_GRE; ip40->checksum = ip4_header_checksum (ip40); } else /* encap GRE6*/ { ip6_header_t *ip60; vlib_buffer_advance ( p0, -sizeof(ip6_header_t) - sizeof(gre_header_t)); ip60 = vlib_buffer_get_current (p0); gre0 = (gre_header_t *) (ip60 + 1); ip60->dst_address = lbm->ass[asindex0].address.ip6; ip60->src_address = lbm->ip6_src_address; ip60->hop_limit = 128; ip60->ip_version_traffic_class_and_flow_label = clib_host_to_net_u32 (0x6 << 28); ip60->payload_length = clib_host_to_net_u16 ( len0 + sizeof(gre_header_t)); ip60->protocol = IP_PROTOCOL_GRE; } gre0->flags_and_version = 0; gre0->protocol = (is_input_v4) ? clib_host_to_net_u16 (0x0800) : clib_host_to_net_u16 (0x86DD); } else if (encap_type == LB_ENCAP_TYPE_L3DSR) /* encap L3DSR*/ { ip4_header_t *ip40; tcp_header_t *th0; ip_csum_t csum; u32 old_dst, new_dst; u8 old_tos, new_tos; ip40 = vlib_buffer_get_current (p0); old_dst = ip40->dst_address.as_u32; new_dst = lbm->ass[asindex0].address.ip4.as_u32; ip40->dst_address.as_u32 = lbm->ass[asindex0].address.ip4.as_u32; /* Get and rewrite DSCP bit */ old_tos = ip40->tos; new_tos = (u8) ((vip0->encap_args.dscp & 0x3F) << 2); ip40->tos = (u8) ((vip0->encap_args.dscp & 0x3F) << 2); csum = ip40->checksum; csum = ip_csum_update (csum, old_tos, new_tos, ip4_header_t, tos /* changed member */); csum = ip_csum_update (csum, old_dst, new_dst, ip4_header_t, dst_address /* changed member */); ip40->checksum = ip_csum_fold (csum); /* Recomputing L4 checksum after dst-IP modifying */ th0 = ip4_next_header (ip40); th0->checksum = 0; th0->checksum = ip4_tcp_udp_compute_checksum (vm, p0, ip40); } else if ((encap_type == LB_ENCAP_TYPE_NAT4) || (encap_type == LB_ENCAP_TYPE_NAT6)) { ip_csum_t csum; udp_header_t *uh; /* do NAT */ if ((is_input_v4 == 1) && (encap_type == LB_ENCAP_TYPE_NAT4)) { /* NAT44 */ ip4_header_t *ip40; u32 old_dst; ip40 = vlib_buffer_get_current (p0); uh = (udp_header_t *) (ip40 + 1); old_dst = ip40->dst_address.as_u32; ip40->dst_address = lbm->ass[asindex0].address.ip4; csum = ip40->checksum; csum = ip_csum_sub_even (csum, old_dst); csum = ip_csum_add_even ( csum, lbm->ass[asindex0].address.ip4.as_u32); ip40->checksum = ip_csum_fold (csum); if (ip40->protocol == IP_PROTOCOL_UDP) { uh->dst_port = vip0->encap_args.target_port; csum = uh->checksum; csum = ip_csum_sub_even (csum, old_dst); csum = ip_csum_add_even ( csum, lbm->ass[asindex0].address.ip4.as_u32); uh->checksum = ip_csum_fold (csum); } else { asindex0 = 0; } } else if ((is_input_v4 == 0) && (encap_type == LB_ENCAP_TYPE_NAT6)) { /* NAT66 */ ip6_header_t *ip60; ip6_address_t old_dst; ip60 = vlib_buffer_get_current (p0); uh = (udp_header_t *) (ip60 + 1); old_dst.as_u64[0] = ip60->dst_address.as_u64[0]; old_dst.as_u64[1] = ip60->dst_address.as_u64[1]; ip60->dst_address.as_u64[0] = lbm->ass[asindex0].address.ip6.as_u64[0]; ip60->dst_address.as_u64[1] = lbm->ass[asindex0].address.ip6.as_u64[1]; if (PREDICT_TRUE(ip60->protocol == IP_PROTOCOL_UDP)) { uh->dst_port = vip0->encap_args.target_port; csum = uh->checksum; csum = ip_csum_sub_even (csum, old_dst.as_u64[0]); csum = ip_csum_sub_even (csum, old_dst.as_u64[1]); csum = ip_csum_add_even ( csum, lbm->ass[asindex0].address.ip6.as_u64[0]); csum = ip_csum_add_even ( csum, lbm->ass[asindex0].address.ip6.as_u64[1]); uh->checksum = ip_csum_fold (csum); } else { asindex0 = 0; } } } next0 = lbm->ass[asindex0].dpo.dpoi_next_node; //Note that this is going to error if asindex0 == 0 vnet_buffer (p0)->ip.adj_index[VLIB_TX] = lbm->ass[asindex0].dpo.dpoi_index; if (PREDICT_FALSE(p0->flags & VLIB_BUFFER_IS_TRACED)) { lb_trace_t *tr = vlib_add_trace (vm, node, p0, sizeof(*tr)); tr->as_index = asindex0; tr->vip_index = vip_index0; } //Enqueue to next vlib_validate_buffer_enqueue_x1( vm, node, next_index, to_next, n_left_to_next, pi0, next0); } vlib_put_next_frame (vm, node, next_index, n_left_to_next); } return frame->n_vectors; } u8 * format_nodeport_lb_trace (u8 * s, va_list * args) { lb_main_t *lbm = &lb_main; CLIB_UNUSED(vlib_main_t * vm) = va_arg (*args, vlib_main_t *); CLIB_UNUSED(vlib_node_t * node) = va_arg (*args, vlib_node_t *); lb_nodeport_trace_t *t = va_arg (*args, lb_nodeport_trace_t *); if (pool_is_free_index(lbm->vips, t->vip_index)) { s = format (s, "lb vip[%d]: This VIP was freed since capture\n"); } else { s = format (s, "lb vip[%d]: %U\n", t->vip_index, format_lb_vip, &lbm->vips[t->vip_index]); } s = format (s, " lb node_port: %d", t->node_port); return s; } static uword lb_nodeport_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame, u8 is_input_v4) { lb_main_t *lbm = &lb_main; u32 n_left_from, *from, next_index, *to_next, n_left_to_next; from = vlib_frame_vector_args (frame); n_left_from = frame->n_vectors; next_index = node->cached_next_index; while (n_left_from > 0) { 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 pi0; vlib_buffer_t *p0; udp_header_t * udp_0; uword * entry0; if (PREDICT_TRUE(n_left_from > 1)) { vlib_buffer_t *p1 = vlib_get_buffer (vm, from[1]); //Prefetch for encap, next CLIB_PREFETCH(vlib_buffer_get_current (p1) - 64, 64, STORE); } if (PREDICT_TRUE(n_left_from > 2)) { vlib_buffer_t *p2; p2 = vlib_get_buffer (vm, from[2]); /* prefetch packet header and data */ vlib_prefetch_buffer_header(p2, STORE); CLIB_PREFETCH(vlib_buffer_get_current (p2), 64, STORE); } pi0 = to_next[0] = from[0]; from += 1; n_left_from -= 1; to_next += 1; n_left_to_next -= 1; p0 = vlib_get_buffer (vm, pi0); if (is_input_v4) { ip4_header_t *ip40; vlib_buffer_advance ( p0, -(word) (sizeof(udp_header_t) + sizeof(ip4_header_t))); ip40 = vlib_buffer_get_current (p0); udp_0 = (udp_header_t *) (ip40 + 1); } else { ip6_header_t *ip60; vlib_buffer_advance ( p0, -(word) (sizeof(udp_header_t) + sizeof(ip6_header_t))); ip60 = vlib_buffer_get_current (p0); udp_0 = (udp_header_t *) (ip60 + 1); } entry0 = hash_get_mem(lbm->vip_index_by_nodeport, &(udp_0->dst_port)); //Enqueue to next vnet_buffer(p0)->ip.adj_index[VLIB_TX] = entry0 ? entry0[0] : ADJ_INDEX_INVALID; if (PREDICT_FALSE(p0->flags & VLIB_BUFFER_IS_TRACED)) { lb_nodeport_trace_t *tr = vlib_add_trace (vm, node, p0, sizeof(*tr)); tr->vip_index = entry0 ? entry0[0] : ADJ_INDEX_INVALID; tr->node_port = (u32) clib_net_to_host_u16 (udp_0->dst_port); } vlib_validate_buffer_enqueue_x1(vm, node, next_index, to_next, n_left_to_next, pi0, is_input_v4 ? LB4_NODEPORT_NEXT_IP4_NAT4 : LB6_NODEPORT_NEXT_IP6_NAT6); } vlib_put_next_frame (vm, node, next_index, n_left_to_next); } return frame->n_vectors; } /** * @brief Match NAT44 static mapping. * * @param sm NAT main. * @param match Address and port to match. * @param index index to the pool. * * @returns 0 if match found, otherwise -1. */ int lb_nat44_mapping_match (lb_main_t *lbm, lb_snat4_key_t * match, u32 *index) { clib_bihash_kv_8_8_t kv4, value; clib_bihash_8_8_t *mapping_hash = &lbm->mapping_by_as4; kv4.key = match->as_u64; kv4.value = 0; if (clib_bihash_search_8_8 (mapping_hash, &kv4, &value)) { return 1; } *index = value.value; return 0; } /** * @brief Match NAT66 static mapping. * * @param sm NAT main. * @param match Address and port to match. * @param mapping External or local address and port of the matched mapping. * * @returns 0 if match found otherwise 1. */ int lb_nat66_mapping_match (lb_main_t *lbm, lb_snat6_key_t * match, u32 *index) { clib_bihash_kv_24_8_t kv6, value; lb_snat6_key_t m_key6; clib_bihash_24_8_t *mapping_hash = &lbm->mapping_by_as6; m_key6.addr.as_u64[0] = match->addr.as_u64[0]; m_key6.addr.as_u64[1] = match->addr.as_u64[1]; m_key6.port = match->port; m_key6.protocol = 0; m_key6.fib_index = 0; kv6.key[0] = m_key6.as_u64[0]; kv6.key[1] = m_key6.as_u64[1]; kv6.key[2] = m_key6.as_u64[2]; kv6.value = 0; if (clib_bihash_search_24_8 (mapping_hash, &kv6, &value)) { return 1; } *index = value.value; return 0; } static uword lb_nat_in2out_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame, u32 is_nat4) { u32 n_left_from, *from, *to_next; u32 next_index; u32 pkts_processed = 0; lb_main_t *lbm = &lb_main; u32 stats_node_index; stats_node_index = is_nat4 ? lb_nat4_in2out_node.index : lb_nat6_in2out_node.index; from = vlib_frame_vector_args (frame); n_left_from = frame->n_vectors; next_index = node->cached_next_index; while (n_left_from > 0) { u32 n_left_to_next; vlib_get_next_frame(vm, node, next_index, to_next, n_left_to_next); while (n_left_from > 0 && n_left_to_next > 0) { u32 bi0; vlib_buffer_t * b0; u32 next0; u32 sw_if_index0; ip_csum_t csum; u16 old_port0, new_port0; udp_header_t * udp0; tcp_header_t * tcp0; u32 proto0; u32 rx_fib_index0; /* 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 = LB_NAT4_IN2OUT_NEXT_LOOKUP; sw_if_index0 = vnet_buffer(b0)->sw_if_index[VLIB_RX]; rx_fib_index0 = ip4_fib_table_get_index_for_sw_if_index ( sw_if_index0); if (is_nat4) { ip4_header_t * ip40; u32 old_addr0, new_addr0; lb_snat4_key_t key40; lb_snat_mapping_t *sm40; u32 index40; ip40 = vlib_buffer_get_current (b0); udp0 = ip4_next_header (ip40); tcp0 = (tcp_header_t *) udp0; proto0 = lb_ip_proto_to_nat_proto (ip40->protocol); key40.addr = ip40->src_address; key40.protocol = proto0; key40.port = udp0->src_port; key40.fib_index = rx_fib_index0; if (lb_nat44_mapping_match (lbm, &key40, &index40)) { next0 = LB_NAT4_IN2OUT_NEXT_DROP; goto trace0; } sm40 = pool_elt_at_index(lbm->snat_mappings, index40); new_addr0 = sm40->src_ip.ip4.as_u32; new_port0 = sm40->src_port; vnet_buffer(b0)->sw_if_index[VLIB_TX] = sm40->fib_index; old_addr0 = ip40->src_address.as_u32; ip40->src_address.as_u32 = new_addr0; csum = ip40->checksum; csum = ip_csum_sub_even (csum, old_addr0); csum = ip_csum_add_even (csum, new_addr0); ip40->checksum = ip_csum_fold (csum); if (PREDICT_TRUE(proto0 == LB_NAT_PROTOCOL_TCP)) { old_port0 = tcp0->src_port; tcp0->src_port = new_port0; csum = tcp0->checksum; csum = ip_csum_sub_even (csum, old_addr0); csum = ip_csum_sub_even (csum, old_port0); csum = ip_csum_add_even (csum, new_addr0); csum = ip_csum_add_even (csum, new_port0); tcp0->checksum = ip_csum_fold (csum); } else if (PREDICT_TRUE(proto0 == LB_NAT_PROTOCOL_UDP)) { old_port0 = udp0->src_port; udp0->src_port = new_port0; csum = udp0->checksum; csum = ip_csum_sub_even (csum, old_addr0); csum = ip_csum_sub_even (csum, old_port0); csum = ip_csum_add_even (csum, new_addr0); csum = ip_csum_add_even (csum, new_port0); udp0->checksum = ip_csum_fold (csum); } pkts_processed += next0 != LB_NAT4_IN2OUT_NEXT_DROP; } else { ip6_header_t * ip60; ip6_address_t old_addr0, new_addr0; lb_snat6_key_t key60; lb_snat_mapping_t *sm60; u32 index60; ip60 = vlib_buffer_get_current (b0); udp0 = ip6_next_header (ip60); tcp0 = (tcp_header_t *) udp0; proto0 = lb_ip_proto_to_nat_proto (ip60->protocol); key60.addr.as_u64[0] = ip60->src_address.as_u64[0]; key60.addr.as_u64[1] = ip60->src_address.as_u64[1]; key60.protocol = proto0; key60.port = udp0->src_port; key60.fib_index = rx_fib_index0; if (lb_nat66_mapping_match (lbm, &key60, &index60)) { next0 = LB_NAT6_IN2OUT_NEXT_DROP; goto trace0; } sm60 = pool_elt_at_index(lbm->snat_mappings, index60); new_addr0.as_u64[0] = sm60->src_ip.as_u64[0]; new_addr0.as_u64[1] = sm60->src_ip.as_u64[1]; new_port0 = sm60->src_port; vnet_buffer(b0)->sw_if_index[VLIB_TX] = sm60->fib_index; old_addr0.as_u64[0] = ip60->src_address.as_u64[0]; old_addr0.as_u64[1] = ip60->src_address.as_u64[1]; ip60->src_address.as_u64[0] = new_addr0.as_u64[0]; ip60->src_address.as_u64[1] = new_addr0.as_u64[1]; if (PREDICT_TRUE(proto0 == LB_NAT_PROTOCOL_TCP)) { old_port0 = tcp0->src_port; tcp0->src_port = new_port0; csum = tcp0->checksum; csum = ip_csum_sub_even (csum, old_addr0.as_u64[0]); csum = ip_csum_sub_even (csum, old_addr0.as_u64[1]); csum = ip_csum_add_even (csum, new_addr0.as_u64[0]); csum = ip_csum_add_even (csum, new_addr0.as_u64[1]); csum = ip_csum_sub_even (csum, old_port0); csum = ip_csum_add_even (csum, new_port0); tcp0->checksum = ip_csum_fold (csum); } else if (PREDICT_TRUE(proto0 == LB_NAT_PROTOCOL_UDP)) { old_port0 = udp0->src_port; udp0->src_port = new_port0; csum = udp0->checksum; csum = ip_csum_sub_even (csum, old_addr0.as_u64[0]); csum = ip_csum_sub_even (csum, old_addr0.as_u64[1]); csum = ip_csum_add_even (csum, new_addr0.as_u64[0]); csum = ip_csum_add_even (csum, new_addr0.as_u64[1]); csum = ip_csum_sub_even (csum, old_port0); csum = ip_csum_add_even (csum, new_port0); udp0->checksum = ip_csum_fold (csum); } pkts_processed += next0 != LB_NAT4_IN2OUT_NEXT_DROP; } trace0: if (PREDICT_FALSE( (node->flags & VLIB_NODE_FLAG_TRACE) && (b0->flags & VLIB_BUFFER_IS_TRACED))) { lb_nat_trace_t *t = vlib_add_trace (vm, node, b0, sizeof(*t)); t->rx_sw_if_index = sw_if_index0; t->next_index = next0; } /* verify speculative enqueue, maybe switch current next frame */ vlib_validate_buffer_enqueue_x1(vm, node, next_index, to_next, n_left_to_next, bi0, next0); } vlib_put_next_frame (vm, node, next_index, n_left_to_next); } vlib_node_increment_counter (vm, stats_node_index, LB_NAT_IN2OUT_ERROR_IN2OUT_PACKETS, pkts_processed); return frame->n_vectors; } static uword lb6_gre6_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame) { return lb_node_fn (vm, node, frame, 0, LB_ENCAP_TYPE_GRE6, 0); } static uword lb6_gre4_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame) { return lb_node_fn (vm, node, frame, 0, LB_ENCAP_TYPE_GRE4, 0); } static uword lb4_gre6_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame) { return lb_node_fn (vm, node, frame, 1, LB_ENCAP_TYPE_GRE6, 0); } static uword lb4_gre4_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame) { return lb_node_fn (vm, node, frame, 1, LB_ENCAP_TYPE_GRE4, 0); } static uword lb6_gre6_port_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame) { return lb_node_fn (vm, node, frame, 0, LB_ENCAP_TYPE_GRE6, 1); } static uword lb6_gre4_port_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame) { return lb_node_fn (vm, node, frame, 0, LB_ENCAP_TYPE_GRE4, 1); } static uword lb4_gre6_port_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame) { return lb_node_fn (vm, node, frame, 1, LB_ENCAP_TYPE_GRE6, 1); } static uword lb4_gre4_port_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame) { return lb_node_fn (vm, node, frame, 1, LB_ENCAP_TYPE_GRE4, 1); } static uword lb4_l3dsr_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame) { return lb_node_fn (vm, node, frame, 1, LB_ENCAP_TYPE_L3DSR, 0); } static uword lb4_l3dsr_port_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame) { return lb_node_fn (vm, node, frame, 1, LB_ENCAP_TYPE_L3DSR, 1); } static uword lb6_nat6_port_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame) { return lb_node_fn (vm, node, frame, 0, LB_ENCAP_TYPE_NAT6, 1); } static uword lb4_nat4_port_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame) { return lb_node_fn (vm, node, frame, 1, LB_ENCAP_TYPE_NAT4, 1); } static uword lb_nat4_in2out_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame) { return lb_nat_in2out_node_fn (vm, node, frame, 1); } static uword lb_nat6_in2out_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame) { return lb_nat_in2out_node_fn (vm, node, frame, 0); } VLIB_REGISTER_NODE (lb6_gre6_node) = { .function = lb6_gre6_node_fn, .name = "lb6-gre6", .vector_size = sizeof(u32), .format_trace = format_lb_trace, .n_errors = LB_N_ERROR, .error_strings = lb_error_strings, .n_next_nodes = LB_N_NEXT, .next_nodes = { [LB_NEXT_DROP] = "error-drop" }, }; VLIB_REGISTER_NODE (lb6_gre4_node) = { .function = lb6_gre4_node_fn, .name = "lb6-gre4", .vector_size = sizeof(u32), .format_trace = format_lb_trace, .n_errors = LB_N_ERROR, .error_strings = lb_error_strings, .n_next_nodes = LB_N_NEXT, .next_nodes = { [LB_NEXT_DROP] = "error-drop" }, }; VLIB_REGISTER_NODE (lb4_gre6_node) = { .function = lb4_gre6_node_fn, .name = "lb4-gre6", .vector_size = sizeof(u32), .format_trace = format_lb_trace, .n_errors = LB_N_ERROR, .error_strings = lb_error_strings, .n_next_nodes = LB_N_NEXT, .next_nodes = { [LB_NEXT_DROP] = "error-drop" }, }; VLIB_REGISTER_NODE (lb4_gre4_node) = { .function = lb4_gre4_node_fn, .name = "lb4-gre4", .vector_size = sizeof(u32), .format_trace = format_lb_trace, .n_errors = LB_N_ERROR, .error_strings = lb_error_strings, .n_next_nodes = LB_N_NEXT, .next_nodes = { [LB_NEXT_DROP] = "error-drop" }, }; VLIB_REGISTER_NODE (lb6_gre6_port_node) = { .function = lb6_gre6_port_node_fn, .name = "lb6-gre6-port", .vector_size = sizeof(u32), .format_trace = format_lb_trace, .n_errors = LB_N_ERROR, .error_strings = lb_error_strings, .n_next_nodes = LB_N_NEXT, .next_nodes = { [LB_NEXT_DROP] = "error-drop" }, }; VLIB_REGISTER_NODE (lb6_gre4_port_node) = { .function = lb6_gre4_port_node_fn, .name = "lb6-gre4-port", .vector_size = sizeof(u32), .format_trace = format_lb_trace, .n_errors = LB_N_ERROR, .error_strings = lb_error_strings, .n_next_nodes = LB_N_NEXT, .next_nodes = { [LB_NEXT_DROP] = "error-drop" }, }; VLIB_REGISTER_NODE (lb4_gre6_port_node) = { .function = lb4_gre6_port_node_fn, .name = "lb4-gre6-port", .vector_size = sizeof(u32), .format_trace = format_lb_trace, .n_errors = LB_N_ERROR, .error_strings = lb_error_strings, .n_next_nodes = LB_N_NEXT, .next_nodes = { [LB_NEXT_DROP] = "error-drop" }, }; VLIB_REGISTER_NODE (lb4_gre4_port_node) = { .function = lb4_gre4_port_node_fn, .name = "lb4-gre4-port", .vector_size = sizeof(u32), .format_trace = format_lb_trace, .n_errors = LB_N_ERROR, .error_strings = lb_error_strings, .n_next_nodes = LB_N_NEXT, .next_nodes = { [LB_NEXT_DROP] = "error-drop" }, }; VLIB_REGISTER_NODE (lb4_l3dsr_port_node) = { .function = lb4_l3dsr_port_node_fn, .name = "lb4-l3dsr-port", .vector_size = sizeof(u32), .format_trace = format_lb_trace, .n_errors = LB_N_ERROR, .error_strings = lb_error_strings, .n_next_nodes = LB_N_NEXT, .next_nodes = { [LB_NEXT_DROP] = "error-drop" }, }; VLIB_REGISTER_NODE (lb4_l3dsr_node) = { .function = lb4_l3dsr_node_fn, .name = "lb4-l3dsr", .vector_size = sizeof(u32), .format_trace = format_lb_trace, .n_errors = LB_N_ERROR, .error_strings = lb_error_strings, .n_next_nodes = LB_N_NEXT, .next_nodes = { [LB_NEXT_DROP] = "error-drop" }, }; VLIB_REGISTER_NODE (lb6_nat6_port_node) = { .function = lb6_nat6_port_node_fn, .name = "lb6-nat6-port", .vector_size = sizeof(u32), .format_trace = format_lb_trace, .n_errors = LB_N_ERROR, .error_strings = lb_error_strings, .n_next_nodes = LB_N_NEXT, .next_nodes = { [LB_NEXT_DROP] = "error-drop" }, }; VLIB_REGISTER_NODE (lb4_nat4_port_node) = { .function = lb4_nat4_port_node_fn, .name = "lb4-nat4-port", .vector_size = sizeof(u32), .format_trace = format_lb_trace, .n_errors = LB_N_ERROR, .error_strings = lb_error_strings, .n_next_nodes = LB_N_NEXT, .next_nodes = { [LB_NEXT_DROP] = "error-drop" }, }; static uword lb4_nodeport_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame) { return lb_nodeport_node_fn (vm, node, frame, 1); } static uword lb6_nodeport_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame) { return lb_nodeport_node_fn (vm, node, frame, 0); } VLIB_REGISTER_NODE (lb4_nodeport_node) = { .function = lb4_nodeport_node_fn, .name = "lb4-nodeport", .vector_size = sizeof(u32), .format_trace = format_nodeport_lb_trace, .n_errors = LB_N_ERROR, .error_strings = lb_error_strings, .n_next_nodes = LB4_NODEPORT_N_NEXT, .next_nodes = { [LB4_NODEPORT_NEXT_IP4_NAT4] = "lb4-nat4-port", [LB4_NODEPORT_NEXT_DROP] = "error-drop", }, }; VLIB_REGISTER_NODE (lb6_nodeport_node) = { .function = lb6_nodeport_node_fn, .name = "lb6-nodeport", .vector_size = sizeof(u32), .format_trace = format_nodeport_lb_trace, .n_errors = LB_N_ERROR, .error_strings = lb_error_strings, .n_next_nodes = LB6_NODEPORT_N_NEXT, .next_nodes = { [LB6_NODEPORT_NEXT_IP6_NAT6] = "lb6-nat6-port", [LB6_NODEPORT_NEXT_DROP] = "error-drop", }, }; VNET_FEATURE_INIT (lb_nat4_in2out_node_fn, static) = { .arc_name = "ip4-unicast", .node_name = "lb-nat4-in2out", .runs_before = VNET_FEATURES("ip4-lookup"), }; VLIB_REGISTER_NODE (lb_nat4_in2out_node) = { .function = lb_nat4_in2out_node_fn, .name = "lb-nat4-in2out", .vector_size = sizeof(u32), .format_trace = format_lb_nat_trace, .n_errors = LB_N_ERROR, .error_strings = lb_error_strings, .n_next_nodes = LB_NAT4_IN2OUT_N_NEXT, .next_nodes = { [LB_NAT4_IN2OUT_NEXT_DROP] = "error-drop", [LB_NAT4_IN2OUT_NEXT_LOOKUP] = "ip4-lookup", }, }; VNET_FEATURE_INIT (lb_nat6_in2out_node_fn, static) = { .arc_name = "ip6-unicast", .node_name = "lb-nat6-in2out", .runs_before = VNET_FEATURES("ip6-lookup"), }; VLIB_REGISTER_NODE (lb_nat6_in2out_node) = { .function = lb_nat6_in2out_node_fn, .name = "lb-nat6-in2out", .vector_size = sizeof(u32), .format_trace = format_lb_nat_trace, .n_errors = LB_N_ERROR, .error_strings = lb_error_strings, .n_next_nodes = LB_NAT6_IN2OUT_N_NEXT, .next_nodes = { [LB_NAT6_IN2OUT_NEXT_DROP] = "error-drop", [LB_NAT6_IN2OUT_NEXT_LOOKUP] = "ip6-lookup", }, };


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