X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=src%2Fplugins%2Fnat%2Fnat64_out2in.c;h=6c0075102a187f7bcbd4759d97e34d34a16f0ee2;hb=f126e746fc01c75bc99329d10ce9127b26b23814;hp=e0dd407e0cf5dc3426c1088477962c871c9553d6;hpb=3535501b19aec95dfd32870c784f841f57b5c045;p=vpp.git diff --git a/src/plugins/nat/nat64_out2in.c b/src/plugins/nat/nat64_out2in.c index e0dd407e0cf..6c0075102a1 100644 --- a/src/plugins/nat/nat64_out2in.c +++ b/src/plugins/nat/nat64_out2in.c @@ -18,7 +18,6 @@ */ #include -#include #include #include #include @@ -44,38 +43,12 @@ format_nat64_out2in_trace (u8 * s, va_list * args) return s; } -typedef struct -{ - u32 sw_if_index; - u32 next_index; - u8 cached; -} nat64_out2in_reass_trace_t; - -static u8 * -format_nat64_out2in_reass_trace (u8 * s, va_list * args) -{ - CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *); - CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *); - nat64_out2in_reass_trace_t *t = - va_arg (*args, nat64_out2in_reass_trace_t *); - - s = - format (s, "NAT64-out2in-reass: sw_if_index %d, next index %d, status %s", - t->sw_if_index, t->next_index, - t->cached ? "cached" : "translated"); - - return s; -} - - #define foreach_nat64_out2in_error \ _(UNSUPPORTED_PROTOCOL, "unsupported protocol") \ _(OUT2IN_PACKETS, "good out2in packets processed") \ _(NO_TRANSLATION, "no translation") \ _(UNKNOWN, "unknown") \ _(DROP_FRAGMENT, "drop fragment") \ -_(MAX_REASS, "maximum reassemblies exceeded") \ -_(MAX_FRAG, "maximum fragments per reassembly exceeded") \ _(TCP_PACKETS, "TCP packets") \ _(UDP_PACKETS, "UDP packets") \ _(ICMP_PACKETS, "ICMP packets") \ @@ -104,7 +77,6 @@ typedef enum NAT64_OUT2IN_NEXT_IP6_LOOKUP, NAT64_OUT2IN_NEXT_IP4_LOOKUP, NAT64_OUT2IN_NEXT_DROP, - NAT64_OUT2IN_NEXT_REASS, NAT64_OUT2IN_N_NEXT, } nat64_out2in_next_t; @@ -116,25 +88,90 @@ typedef struct nat64_out2in_set_ctx_t_ } nat64_out2in_set_ctx_t; static int -nat64_out2in_tcp_udp_set_cb (ip4_header_t * ip4, ip6_header_t * ip6, - void *arg) +nat64_out2in_tcp_udp (vlib_main_t * vm, vlib_buffer_t * b, + nat64_out2in_set_ctx_t * ctx) { + ip4_header_t *ip4; + ip6_header_t *ip6; + ip_csum_t csum; + u16 *checksum = NULL; + ip6_frag_hdr_t *frag; + u32 frag_id; + ip4_address_t old_src, old_dst; + nat64_main_t *nm = &nat64_main; - nat64_out2in_set_ctx_t *ctx = arg; nat64_db_bib_entry_t *bibe; nat64_db_st_entry_t *ste; - ip46_address_t saddr, daddr; + ip46_address_t saddr; + ip46_address_t daddr; ip6_address_t ip6_saddr; - udp_header_t *udp = ip4_next_header (ip4); - tcp_header_t *tcp = ip4_next_header (ip4); - u8 proto = ip4->protocol; - u16 dport = udp->dst_port; - u16 sport = udp->src_port; + u8 proto = vnet_buffer (b)->ip.reass.ip_proto; + u16 dport = vnet_buffer (b)->ip.reass.l4_dst_port; + u16 sport = vnet_buffer (b)->ip.reass.l4_src_port; u32 sw_if_index, fib_index; - u16 *checksum; - ip_csum_t csum; nat64_db_t *db = &nm->db[ctx->thread_index]; + ip4 = vlib_buffer_get_current (b); + + udp_header_t *udp = ip4_next_header (ip4); + tcp_header_t *tcp = ip4_next_header (ip4); + if (!vnet_buffer (b)->ip.reass.is_non_first_fragment) + { + if (ip4->protocol == IP_PROTOCOL_UDP) + { + checksum = &udp->checksum; + //UDP checksum is optional over IPv4 but mandatory for IPv6 + //We do not check udp->length sanity but use our safe computed value instead + if (PREDICT_FALSE (!*checksum)) + { + u16 udp_len = + clib_host_to_net_u16 (ip4->length) - sizeof (*ip4); + csum = ip_incremental_checksum (0, udp, udp_len); + csum = + ip_csum_with_carry (csum, clib_host_to_net_u16 (udp_len)); + csum = + ip_csum_with_carry (csum, + clib_host_to_net_u16 (IP_PROTOCOL_UDP)); + csum = + ip_csum_with_carry (csum, *((u64 *) (&ip4->src_address))); + *checksum = ~ip_csum_fold (csum); + } + } + else + { + checksum = &tcp->checksum; + } + } + + old_src.as_u32 = ip4->src_address.as_u32; + old_dst.as_u32 = ip4->dst_address.as_u32; + + // Deal with fragmented packets + u16 frag_offset = ip4_get_fragment_offset (ip4); + if (PREDICT_FALSE (ip4_get_fragment_more (ip4) || frag_offset)) + { + ip6 = + (ip6_header_t *) u8_ptr_add (ip4, + sizeof (*ip4) - sizeof (*ip6) - + sizeof (*frag)); + frag = + (ip6_frag_hdr_t *) u8_ptr_add (ip4, sizeof (*ip4) - sizeof (*frag)); + frag_id = frag_id_4to6 (ip4->fragment_id); + vlib_buffer_advance (b, sizeof (*ip4) - sizeof (*ip6) - sizeof (*frag)); + } + else + { + ip6 = (ip6_header_t *) (((u8 *) ip4) + sizeof (*ip4) - sizeof (*ip6)); + vlib_buffer_advance (b, sizeof (*ip4) - sizeof (*ip6)); + frag = NULL; + } + + ip6->ip_version_traffic_class_and_flow_label = + clib_host_to_net_u32 ((6 << 28) + (ip4->tos << 20)); + ip6->payload_length = u16_net_add (ip4->length, -sizeof (*ip4)); + ip6->hop_limit = ip4->ttl; + ip6->protocol = ip4->protocol; + sw_if_index = vnet_buffer (ctx->b)->sw_if_index[VLIB_RX]; fib_index = ip4_fib_table_get_index_for_sw_if_index (sw_if_index); @@ -159,7 +196,7 @@ nat64_out2in_tcp_udp_set_cb (ip4_header_t * ip4, ip6_header_t * ip6, if (!bibe) return -1; - nat64_compose_ip6 (&ip6_saddr, &ip4->src_address, bibe->fib_index); + nat64_compose_ip6 (&ip6_saddr, &old_src, bibe->fib_index); ste = nat64_db_st_entry_create (ctx->thread_index, db, bibe, &ip6_saddr, &saddr.ip4, sport); @@ -176,29 +213,48 @@ nat64_out2in_tcp_udp_set_cb (ip4_header_t * ip4, ip6_header_t * ip6, ip6->dst_address.as_u64[0] = bibe->in_addr.as_u64[0]; ip6->dst_address.as_u64[1] = bibe->in_addr.as_u64[1]; - udp->dst_port = bibe->in_port; - if (proto == IP_PROTOCOL_UDP) - checksum = &udp->checksum; - else + vnet_buffer (ctx->b)->sw_if_index[VLIB_TX] = bibe->fib_index; + + nat64_session_reset_timeout (ste, ctx->vm); + + if (PREDICT_FALSE (frag != NULL)) { - checksum = &tcp->checksum; - nat64_tcp_session_set_state (ste, tcp, 0); + frag->next_hdr = ip6->protocol; + frag->identification = frag_id; + frag->rsv = 0; + frag->fragment_offset_and_more = + ip6_frag_hdr_offset_and_more (frag_offset, 1); + ip6->protocol = IP_PROTOCOL_IPV6_FRAGMENTATION; + ip6->payload_length = u16_net_add (ip6->payload_length, sizeof (*frag)); } - csum = ip_csum_sub_even (*checksum, dport); - csum = ip_csum_add_even (csum, udp->dst_port); - *checksum = ip_csum_fold (csum); + if (!vnet_buffer (b)->ip.reass.is_non_first_fragment) + { + udp->dst_port = bibe->in_port; - vnet_buffer (ctx->b)->sw_if_index[VLIB_TX] = bibe->fib_index; + if (proto == IP_PROTOCOL_TCP) + { + nat64_tcp_session_set_state (ste, tcp, 0); + } - nat64_session_reset_timeout (ste, ctx->vm); + csum = ip_csum_sub_even (*checksum, dport); + csum = ip_csum_add_even (csum, udp->dst_port); + csum = ip_csum_sub_even (csum, old_src.as_u32); + csum = ip_csum_sub_even (csum, old_dst.as_u32); + csum = ip_csum_add_even (csum, ip6->src_address.as_u64[0]); + csum = ip_csum_add_even (csum, ip6->src_address.as_u64[1]); + csum = ip_csum_add_even (csum, ip6->dst_address.as_u64[0]); + csum = ip_csum_add_even (csum, ip6->dst_address.as_u64[1]); + *checksum = ip_csum_fold (csum); + } return 0; } static int -nat64_out2in_icmp_set_cb (ip4_header_t * ip4, ip6_header_t * ip6, void *arg) +nat64_out2in_icmp_set_cb (vlib_buffer_t * b, ip4_header_t * ip4, + ip6_header_t * ip6, void *arg) { nat64_main_t *nm = &nat64_main; nat64_out2in_set_ctx_t *ctx = arg; @@ -278,8 +334,8 @@ nat64_out2in_icmp_set_cb (ip4_header_t * ip4, ip6_header_t * ip6, void *arg) } static int -nat64_out2in_inner_icmp_set_cb (ip4_header_t * ip4, ip6_header_t * ip6, - void *arg) +nat64_out2in_inner_icmp_set_cb (vlib_buffer_t * b, ip4_header_t * ip4, + ip6_header_t * ip6, void *arg) { nat64_main_t *nm = &nat64_main; nat64_out2in_set_ctx_t *ctx = arg; @@ -370,11 +426,15 @@ nat64_out2in_inner_icmp_set_cb (ip4_header_t * ip4, ip6_header_t * ip6, } static int -nat64_out2in_unk_proto_set_cb (ip4_header_t * ip4, ip6_header_t * ip6, - void *arg) +nat64_out2in_unk_proto (vlib_main_t * vm, vlib_buffer_t * p, + nat64_out2in_set_ctx_t * ctx) { + ip4_header_t *ip4 = vlib_buffer_get_current (p); + ip6_header_t *ip6; + ip6_frag_hdr_t *frag; + u32 frag_id; + nat64_main_t *nm = &nat64_main; - nat64_out2in_set_ctx_t *ctx = arg; nat64_db_bib_entry_t *bibe; nat64_db_st_entry_t *ste; ip46_address_t saddr, daddr; @@ -383,6 +443,43 @@ nat64_out2in_unk_proto_set_cb (ip4_header_t * ip4, ip6_header_t * ip6, u8 proto = ip4->protocol; nat64_db_t *db = &nm->db[ctx->thread_index]; + // Deal with fragmented packets + u16 frag_offset = ip4_get_fragment_offset (ip4); + if (PREDICT_FALSE (ip4_get_fragment_more (ip4) || frag_offset)) + { + ip6 = + (ip6_header_t *) u8_ptr_add (ip4, + sizeof (*ip4) - sizeof (*ip6) - + sizeof (*frag)); + frag = + (ip6_frag_hdr_t *) u8_ptr_add (ip4, sizeof (*ip4) - sizeof (*frag)); + frag_id = frag_id_4to6 (ip4->fragment_id); + vlib_buffer_advance (p, sizeof (*ip4) - sizeof (*ip6) - sizeof (*frag)); + } + else + { + ip6 = (ip6_header_t *) (((u8 *) ip4) + sizeof (*ip4) - sizeof (*ip6)); + vlib_buffer_advance (p, sizeof (*ip4) - sizeof (*ip6)); + frag = NULL; + } + + ip6->ip_version_traffic_class_and_flow_label = + clib_host_to_net_u32 ((6 << 28) + (ip4->tos << 20)); + ip6->payload_length = u16_net_add (ip4->length, -sizeof (*ip4)); + ip6->hop_limit = ip4->ttl; + ip6->protocol = ip4->protocol; + + if (PREDICT_FALSE (frag != NULL)) + { + frag->next_hdr = ip6->protocol; + frag->identification = frag_id; + frag->rsv = 0; + frag->fragment_offset_and_more = + ip6_frag_hdr_offset_and_more (frag_offset, 1); + ip6->protocol = IP_PROTOCOL_IPV6_FRAGMENTATION; + ip6->payload_length = u16_net_add (ip6->payload_length, sizeof (*frag)); + } + sw_if_index = vnet_buffer (ctx->b)->sw_if_index[VLIB_RX]; fib_index = ip4_fib_table_get_index_for_sw_if_index (sw_if_index); @@ -482,7 +579,7 @@ VLIB_NODE_FN (nat64_out2in_node) (vlib_main_t * vm, if (PREDICT_FALSE (proto0 == ~0)) { - if (ip4_to_ip6 (b0, nat64_out2in_unk_proto_set_cb, &ctx0)) + if (nat64_out2in_unk_proto (vm, b0, &ctx0)) { next0 = NAT64_OUT2IN_NEXT_DROP; b0->error = node->errors[NAT64_OUT2IN_ERROR_NO_TRANSLATION]; @@ -491,13 +588,6 @@ VLIB_NODE_FN (nat64_out2in_node) (vlib_main_t * vm, goto trace0; } - if (PREDICT_FALSE (ip4_is_fragment (ip40))) - { - next0 = NAT64_OUT2IN_NEXT_REASS; - fragments++; - goto trace0; - } - if (proto0 == SNAT_PROTOCOL_ICMP) { icmp_packets++; @@ -517,7 +607,7 @@ VLIB_NODE_FN (nat64_out2in_node) (vlib_main_t * vm, else udp_packets++; - if (ip4_to_ip6_tcp_udp (b0, nat64_out2in_tcp_udp_set_cb, &ctx0)) + if (nat64_out2in_tcp_udp (vm, b0, &ctx0)) { udp0 = ip4_next_header (ip40); /* @@ -587,7 +677,6 @@ VLIB_REGISTER_NODE (nat64_out2in_node) = { [NAT64_OUT2IN_NEXT_DROP] = "error-drop", [NAT64_OUT2IN_NEXT_IP6_LOOKUP] = "ip6-lookup", [NAT64_OUT2IN_NEXT_IP4_LOOKUP] = "ip4-lookup", - [NAT64_OUT2IN_NEXT_REASS] = "nat64-out2in-reass", }, }; /* *INDENT-ON* */ @@ -602,350 +691,6 @@ typedef struct nat64_out2in_frag_set_ctx_t_ u8 first_frag; } nat64_out2in_frag_set_ctx_t; -static int -nat64_out2in_frag_set_cb (ip4_header_t * ip4, ip6_header_t * ip6, void *arg) -{ - nat64_main_t *nm = &nat64_main; - nat64_out2in_frag_set_ctx_t *ctx = arg; - nat64_db_st_entry_t *ste; - nat64_db_bib_entry_t *bibe; - udp_header_t *udp = ip4_next_header (ip4); - ip_csum_t csum; - u16 *checksum; - nat64_db_t *db = &nm->db[ctx->thread_index]; - - ste = nat64_db_st_entry_by_index (db, ctx->proto, ctx->sess_index); - if (!ste) - return -1; - - bibe = nat64_db_bib_entry_by_index (db, ctx->proto, ste->bibe_index); - if (!bibe) - return -1; - - if (ctx->first_frag) - { - udp->dst_port = bibe->in_port; - - if (ip4->protocol == IP_PROTOCOL_UDP) - { - checksum = &udp->checksum; - - if (!checksum) - { - u16 udp_len = - clib_host_to_net_u16 (ip4->length) - sizeof (*ip4); - csum = ip_incremental_checksum (0, udp, udp_len); - csum = - ip_csum_with_carry (csum, clib_host_to_net_u16 (udp_len)); - csum = - ip_csum_with_carry (csum, - clib_host_to_net_u16 (IP_PROTOCOL_UDP)); - csum = ip_csum_with_carry (csum, ste->in_r_addr.as_u64[0]); - csum = ip_csum_with_carry (csum, ste->in_r_addr.as_u64[1]); - csum = ip_csum_with_carry (csum, bibe->in_addr.as_u64[0]); - csum = ip_csum_with_carry (csum, bibe->in_addr.as_u64[1]); - *checksum = ~ip_csum_fold (csum); - } - else - { - csum = ip_csum_sub_even (*checksum, bibe->out_addr.as_u32); - csum = ip_csum_sub_even (csum, ste->out_r_addr.as_u32); - csum = ip_csum_sub_even (csum, bibe->out_port); - csum = ip_csum_add_even (csum, ste->in_r_addr.as_u64[0]); - csum = ip_csum_add_even (csum, ste->in_r_addr.as_u64[1]); - csum = ip_csum_add_even (csum, bibe->in_addr.as_u64[0]); - csum = ip_csum_add_even (csum, bibe->in_addr.as_u64[1]); - csum = ip_csum_add_even (csum, bibe->in_port); - *checksum = ip_csum_fold (csum); - } - } - else - { - tcp_header_t *tcp = ip4_next_header (ip4); - nat64_tcp_session_set_state (ste, tcp, 0); - checksum = &tcp->checksum; - csum = ip_csum_sub_even (*checksum, bibe->out_addr.as_u32); - csum = ip_csum_sub_even (csum, ste->out_r_addr.as_u32); - csum = ip_csum_sub_even (csum, bibe->out_port); - csum = ip_csum_add_even (csum, ste->in_r_addr.as_u64[0]); - csum = ip_csum_add_even (csum, ste->in_r_addr.as_u64[1]); - csum = ip_csum_add_even (csum, bibe->in_addr.as_u64[0]); - csum = ip_csum_add_even (csum, bibe->in_addr.as_u64[1]); - csum = ip_csum_add_even (csum, bibe->in_port); - *checksum = ip_csum_fold (csum); - } - - } - - ip6->src_address.as_u64[0] = ste->in_r_addr.as_u64[0]; - ip6->src_address.as_u64[1] = ste->in_r_addr.as_u64[1]; - - ip6->dst_address.as_u64[0] = bibe->in_addr.as_u64[0]; - ip6->dst_address.as_u64[1] = bibe->in_addr.as_u64[1]; - - vnet_buffer (ctx->b)->sw_if_index[VLIB_TX] = bibe->fib_index; - - nat64_session_reset_timeout (ste, ctx->vm); - - return 0; -} - -VLIB_NODE_FN (nat64_out2in_reass_node) (vlib_main_t * vm, - vlib_node_runtime_t * node, - vlib_frame_t * frame) -{ - u32 n_left_from, *from, *to_next; - nat64_out2in_next_t next_index; - u32 pkts_processed = 0, cached_fragments = 0; - u32 *fragments_to_drop = 0; - u32 *fragments_to_loopback = 0; - nat64_main_t *nm = &nat64_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) - { - 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; - ip4_header_t *ip40; - u8 cached0 = 0; - u32 sw_if_index0, fib_index0; - udp_header_t *udp0; - nat_reass_ip4_t *reass0; - ip46_address_t saddr0, daddr0; - nat64_db_st_entry_t *ste0; - nat64_db_bib_entry_t *bibe0; - ip6_address_t ip6_saddr0; - nat64_out2in_frag_set_ctx_t ctx0; - nat64_db_t *db = &nm->db[thread_index]; - - /* 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 = NAT64_OUT2IN_NEXT_IP6_LOOKUP; - - sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX]; - fib_index0 = - fib_table_get_index_for_sw_if_index (FIB_PROTOCOL_IP4, - sw_if_index0); - - ctx0.thread_index = thread_index; - - if (PREDICT_FALSE (nat_reass_is_drop_frag (1))) - { - next0 = NAT64_OUT2IN_NEXT_DROP; - b0->error = node->errors[NAT64_OUT2IN_ERROR_DROP_FRAGMENT]; - goto trace0; - } - - ip40 = vlib_buffer_get_current (b0); - - if (PREDICT_FALSE (!(ip40->protocol == IP_PROTOCOL_TCP - || ip40->protocol == IP_PROTOCOL_UDP))) - { - next0 = NAT64_OUT2IN_NEXT_DROP; - b0->error = node->errors[NAT64_OUT2IN_ERROR_DROP_FRAGMENT]; - goto trace0; - } - - udp0 = ip4_next_header (ip40); - - reass0 = nat_ip4_reass_find_or_create (ip40->src_address, - ip40->dst_address, - ip40->fragment_id, - ip40->protocol, - 1, &fragments_to_drop); - - if (PREDICT_FALSE (!reass0)) - { - next0 = NAT64_OUT2IN_NEXT_DROP; - b0->error = node->errors[NAT64_OUT2IN_ERROR_MAX_REASS]; - goto trace0; - } - - if (PREDICT_FALSE (ip4_is_first_fragment (ip40))) - { - ctx0.first_frag = 1; - - clib_memset (&saddr0, 0, sizeof (saddr0)); - saddr0.ip4.as_u32 = ip40->src_address.as_u32; - clib_memset (&daddr0, 0, sizeof (daddr0)); - daddr0.ip4.as_u32 = ip40->dst_address.as_u32; - - ste0 = - nat64_db_st_entry_find (db, &daddr0, &saddr0, - udp0->dst_port, udp0->src_port, - ip40->protocol, fib_index0, 0); - if (!ste0) - { - bibe0 = - nat64_db_bib_entry_find (db, &daddr0, udp0->dst_port, - ip40->protocol, fib_index0, 0); - if (!bibe0) - { - next0 = NAT64_OUT2IN_NEXT_DROP; - b0->error = - node->errors[NAT64_OUT2IN_ERROR_NO_TRANSLATION]; - goto trace0; - } - - nat64_compose_ip6 (&ip6_saddr0, &ip40->src_address, - bibe0->fib_index); - ste0 = - nat64_db_st_entry_create (thread_index, - db, bibe0, &ip6_saddr0, - &saddr0.ip4, udp0->src_port); - - if (!ste0) - { - next0 = NAT64_OUT2IN_NEXT_DROP; - b0->error = - node->errors[NAT64_OUT2IN_ERROR_NO_TRANSLATION]; - goto trace0; - } - - vlib_set_simple_counter (&nm->total_sessions, thread_index, - 0, db->st.st_entries_num); - } - reass0->sess_index = nat64_db_st_entry_get_index (db, ste0); - reass0->thread_index = thread_index; - - nat_ip4_reass_get_frags (reass0, &fragments_to_loopback); - } - else - { - ctx0.first_frag = 0; - - if (PREDICT_FALSE (reass0->sess_index == (u32) ~ 0)) - { - if (nat_ip4_reass_add_fragment - (thread_index, reass0, bi0, &fragments_to_drop)) - { - b0->error = node->errors[NAT64_OUT2IN_ERROR_MAX_FRAG]; - next0 = NAT64_OUT2IN_NEXT_DROP; - goto trace0; - } - cached0 = 1; - goto trace0; - } - } - - ctx0.sess_index = reass0->sess_index; - ctx0.proto = ip40->protocol; - ctx0.vm = vm; - ctx0.b = b0; - - if (ip4_to_ip6_fragmented (b0, nat64_out2in_frag_set_cb, &ctx0)) - { - next0 = NAT64_OUT2IN_NEXT_DROP; - b0->error = node->errors[NAT64_OUT2IN_ERROR_UNKNOWN]; - goto trace0; - } - - trace0: - if (PREDICT_FALSE - ((node->flags & VLIB_NODE_FLAG_TRACE) - && (b0->flags & VLIB_BUFFER_IS_TRACED))) - { - nat64_out2in_reass_trace_t *t = - vlib_add_trace (vm, node, b0, sizeof (*t)); - t->cached = cached0; - t->sw_if_index = sw_if_index0; - t->next_index = next0; - } - - if (cached0) - { - n_left_to_next++; - to_next--; - cached_fragments++; - } - else - { - pkts_processed += next0 != NAT64_OUT2IN_NEXT_DROP; - - /* verify speculative enqueue, maybe switch current next frame */ - vlib_validate_buffer_enqueue_x1 (vm, node, next_index, - to_next, n_left_to_next, - bi0, next0); - } - - if (n_left_from == 0 && vec_len (fragments_to_loopback)) - { - from = vlib_frame_vector_args (frame); - u32 len = vec_len (fragments_to_loopback); - if (len <= VLIB_FRAME_SIZE) - { - clib_memcpy_fast (from, fragments_to_loopback, - sizeof (u32) * len); - n_left_from = len; - vec_reset_length (fragments_to_loopback); - } - else - { - clib_memcpy_fast (from, fragments_to_loopback + - (len - VLIB_FRAME_SIZE), - sizeof (u32) * VLIB_FRAME_SIZE); - n_left_from = VLIB_FRAME_SIZE; - _vec_len (fragments_to_loopback) = len - VLIB_FRAME_SIZE; - } - } - } - - vlib_put_next_frame (vm, node, next_index, n_left_to_next); - } - - vlib_node_increment_counter (vm, nm->out2in_reass_node_index, - NAT64_OUT2IN_ERROR_PROCESSED_FRAGMENTS, - pkts_processed); - vlib_node_increment_counter (vm, nm->out2in_reass_node_index, - NAT64_OUT2IN_ERROR_CACHED_FRAGMENTS, - cached_fragments); - - nat_send_all_to_node (vm, fragments_to_drop, node, - &node->errors[NAT64_OUT2IN_ERROR_DROP_FRAGMENT], - NAT64_OUT2IN_NEXT_DROP); - - vec_free (fragments_to_drop); - vec_free (fragments_to_loopback); - return frame->n_vectors; -} - -/* *INDENT-OFF* */ -VLIB_REGISTER_NODE (nat64_out2in_reass_node) = { - .name = "nat64-out2in-reass", - .vector_size = sizeof (u32), - .format_trace = format_nat64_out2in_reass_trace, - .type = VLIB_NODE_TYPE_INTERNAL, - .n_errors = ARRAY_LEN (nat64_out2in_error_strings), - .error_strings = nat64_out2in_error_strings, - .n_next_nodes = NAT64_OUT2IN_N_NEXT, - /* edit / add dispositions here */ - .next_nodes = { - [NAT64_OUT2IN_NEXT_DROP] = "error-drop", - [NAT64_OUT2IN_NEXT_IP6_LOOKUP] = "ip6-lookup", - [NAT64_OUT2IN_NEXT_IP4_LOOKUP] = "ip4-lookup", - [NAT64_OUT2IN_NEXT_REASS] = "nat64-out2in-reass", - }, -}; -/* *INDENT-ON* */ - #define foreach_nat64_out2in_handoff_error \ _(CONGESTION_DROP, "congestion drop") \ _(SAME_WORKER, "same worker") \ @@ -1010,7 +755,7 @@ VLIB_NODE_FN (nat64_out2in_handoff_node) (vlib_main_t * vm, ip4_header_t *ip0; ip0 = vlib_buffer_get_current (b[0]); - ti[0] = nat64_get_worker_out2in (ip0); + ti[0] = nat64_get_worker_out2in (b[0], ip0); if (ti[0] != thread_index) do_handoff++;