X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=src%2Fplugins%2Fnat%2Fnat64_in2out.c;h=11551f45741e8e2448ab65b7aa1b9259019486dd;hb=33a58171e5995d9e649b414bfc77f2aab26e4c58;hp=4f94575ebcc95355dbaffad1ac3d18ecbe493d46;hpb=efcd1e9e1d7dda4e4ea3db5750925cd8f6894f4d;p=vpp.git diff --git a/src/plugins/nat/nat64_in2out.c b/src/plugins/nat/nat64_in2out.c index 4f94575ebcc..11551f45741 100644 --- a/src/plugins/nat/nat64_in2out.c +++ b/src/plugins/nat/nat64_in2out.c @@ -19,6 +19,7 @@ #include #include +#include #include #include @@ -69,18 +70,22 @@ format_nat64_in2out_reass_trace (u8 * s, va_list * args) return s; } -vlib_node_registration_t nat64_in2out_node; -vlib_node_registration_t nat64_in2out_slowpath_node; -vlib_node_registration_t nat64_in2out_reass_node; #define foreach_nat64_in2out_error \ _(UNSUPPORTED_PROTOCOL, "unsupported protocol") \ _(IN2OUT_PACKETS, "good in2out packets processed") \ _(NO_TRANSLATION, "no translation") \ _(UNKNOWN, "unknown") \ -_(DROP_FRAGMENT, "Drop fragment") \ -_(MAX_REASS, "Maximum reassemblies exceeded") \ -_(MAX_FRAG, "Maximum fragments per reassembly exceeded") +_(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") \ +_(OTHER_PACKETS, "other protocol packets") \ +_(FRAGMENTS, "fragments") \ +_(CACHED_FRAGMENTS, "cached fragments") \ +_(PROCESSED_FRAGMENTS, "processed fragments") typedef enum @@ -111,8 +116,29 @@ typedef struct nat64_in2out_set_ctx_t_ { vlib_buffer_t *b; vlib_main_t *vm; + u32 thread_index; } nat64_in2out_set_ctx_t; +static inline u8 +nat64_not_translate (u32 sw_if_index, ip6_address_t ip6_addr) +{ + ip6_address_t *addr; + ip6_main_t *im6 = &ip6_main; + ip_lookup_main_t *lm6 = &im6->lookup_main; + ip_interface_address_t *ia = 0; + + /* *INDENT-OFF* */ + foreach_ip_interface_address (lm6, ia, sw_if_index, 0, + ({ + addr = ip_interface_address_get_address (lm6, ia); + if (0 == ip6_address_compare (addr, &ip6_addr)) + return 1; + })); + /* *INDENT-ON* */ + + return 0; +} + /** * @brief Check whether is a hairpinning. * @@ -152,6 +178,7 @@ nat64_in2out_tcp_udp_set_cb (ip6_header_t * ip6, ip4_header_t * ip4, u8 proto = ip6->protocol; u16 sport = udp->src_port; u16 dport = udp->dst_port; + nat64_db_t *db = &nm->db[ctx->thread_index]; sw_if_index = vnet_buffer (ctx->b)->sw_if_index[VLIB_RX]; fib_index = @@ -163,19 +190,18 @@ nat64_in2out_tcp_udp_set_cb (ip6_header_t * ip6, ip4_header_t * ip4, daddr.as_u64[1] = ip6->dst_address.as_u64[1]; ste = - nat64_db_st_entry_find (&nm->db, &saddr, &daddr, sport, dport, proto, + nat64_db_st_entry_find (db, &saddr, &daddr, sport, dport, proto, fib_index, 1); if (ste) { - bibe = nat64_db_bib_entry_by_index (&nm->db, proto, ste->bibe_index); + bibe = nat64_db_bib_entry_by_index (db, proto, ste->bibe_index); if (!bibe) return -1; } else { - bibe = - nat64_db_bib_entry_find (&nm->db, &saddr, sport, proto, fib_index, 1); + bibe = nat64_db_bib_entry_find (db, &saddr, sport, proto, fib_index, 1); if (!bibe) { @@ -183,26 +209,30 @@ nat64_in2out_tcp_udp_set_cb (ip6_header_t * ip6, ip4_header_t * ip4, ip4_address_t out_addr; if (nat64_alloc_out_addr_and_port (fib_index, ip_proto_to_snat_proto (proto), &out_addr, - &out_port)) + &out_port, ctx->thread_index)) return -1; bibe = - nat64_db_bib_entry_create (&nm->db, &ip6->src_address, &out_addr, - sport, clib_host_to_net_u16 (out_port), - fib_index, proto, 0); + nat64_db_bib_entry_create (ctx->thread_index, db, + &ip6->src_address, &out_addr, sport, + out_port, fib_index, proto, 0); if (!bibe) return -1; + + vlib_set_simple_counter (&nm->total_bibs, ctx->thread_index, 0, + db->bib.bib_entries_num); } nat64_extract_ip4 (&ip6->dst_address, &daddr.ip4, fib_index); ste = - nat64_db_st_entry_create (&nm->db, bibe, &ip6->dst_address, - &daddr.ip4, dport); + nat64_db_st_entry_create (ctx->thread_index, db, bibe, + &ip6->dst_address, &daddr.ip4, dport); if (!ste) return -1; - } - nat64_session_reset_timeout (ste, ctx->vm); + vlib_set_simple_counter (&nm->total_sessions, ctx->thread_index, 0, + db->st.st_entries_num); + } ip4->src_address.as_u32 = bibe->out_addr.as_u32; udp->src_port = bibe->out_port; @@ -215,12 +245,16 @@ nat64_in2out_tcp_udp_set_cb (ip6_header_t * ip6, ip4_header_t * ip4, ip_csum_t csum; tcp_header_t *tcp = ip6_next_header (ip6); + nat64_tcp_session_set_state (ste, tcp, 1); checksum = &tcp->checksum; csum = ip_csum_sub_even (*checksum, sport); csum = ip_csum_add_even (csum, udp->src_port); + mss_clamping (nm->sm, tcp, &csum); *checksum = ip_csum_fold (csum); } + nat64_session_reset_timeout (ste, ctx->vm); + return 0; } @@ -234,6 +268,7 @@ nat64_in2out_icmp_set_cb (ip6_header_t * ip6, ip4_header_t * ip4, void *arg) ip46_address_t saddr, daddr; u32 sw_if_index, fib_index; icmp46_header_t *icmp = ip6_next_header (ip6); + nat64_db_t *db = &nm->db[ctx->thread_index]; sw_if_index = vnet_buffer (ctx->b)->sw_if_index[VLIB_RX]; fib_index = @@ -248,13 +283,13 @@ nat64_in2out_icmp_set_cb (ip6_header_t * ip6, ip4_header_t * ip4, void *arg) { u16 in_id = ((u16 *) (icmp))[2]; ste = - nat64_db_st_entry_find (&nm->db, &saddr, &daddr, in_id, 0, + nat64_db_st_entry_find (db, &saddr, &daddr, in_id, 0, IP_PROTOCOL_ICMP, fib_index, 1); if (ste) { bibe = - nat64_db_bib_entry_by_index (&nm->db, IP_PROTOCOL_ICMP, + nat64_db_bib_entry_by_index (db, IP_PROTOCOL_ICMP, ste->bibe_index); if (!bibe) return -1; @@ -262,7 +297,7 @@ nat64_in2out_icmp_set_cb (ip6_header_t * ip6, ip4_header_t * ip4, void *arg) else { bibe = - nat64_db_bib_entry_find (&nm->db, &saddr, in_id, + nat64_db_bib_entry_find (db, &saddr, in_id, IP_PROTOCOL_ICMP, fib_index, 1); if (!bibe) @@ -270,24 +305,31 @@ nat64_in2out_icmp_set_cb (ip6_header_t * ip6, ip4_header_t * ip4, void *arg) u16 out_id; ip4_address_t out_addr; if (nat64_alloc_out_addr_and_port - (fib_index, SNAT_PROTOCOL_ICMP, &out_addr, &out_id)) + (fib_index, SNAT_PROTOCOL_ICMP, &out_addr, &out_id, + ctx->thread_index)) return -1; bibe = - nat64_db_bib_entry_create (&nm->db, &ip6->src_address, - &out_addr, in_id, - clib_host_to_net_u16 (out_id), - fib_index, IP_PROTOCOL_ICMP, 0); + nat64_db_bib_entry_create (ctx->thread_index, db, + &ip6->src_address, &out_addr, + in_id, out_id, fib_index, + IP_PROTOCOL_ICMP, 0); if (!bibe) return -1; + + vlib_set_simple_counter (&nm->total_bibs, ctx->thread_index, 0, + db->bib.bib_entries_num); } nat64_extract_ip4 (&ip6->dst_address, &daddr.ip4, fib_index); ste = - nat64_db_st_entry_create (&nm->db, bibe, &ip6->dst_address, - &daddr.ip4, 0); + nat64_db_st_entry_create (ctx->thread_index, db, bibe, + &ip6->dst_address, &daddr.ip4, 0); if (!ste) return -1; + + vlib_set_simple_counter (&nm->total_sessions, ctx->thread_index, 0, + db->st.st_entries_num); } nat64_session_reset_timeout (ste, ctx->vm); @@ -320,6 +362,7 @@ nat64_in2out_inner_icmp_set_cb (ip6_header_t * ip6, ip4_header_t * ip4, ip46_address_t saddr, daddr; u32 sw_if_index, fib_index; u8 proto = ip6->protocol; + nat64_db_t *db = &nm->db[ctx->thread_index]; sw_if_index = vnet_buffer (ctx->b)->sw_if_index[VLIB_RX]; fib_index = @@ -342,12 +385,12 @@ nat64_in2out_inner_icmp_set_cb (ip6_header_t * ip6, ip4_header_t * ip4, return -1; ste = - nat64_db_st_entry_find (&nm->db, &daddr, &saddr, in_id, 0, proto, + nat64_db_st_entry_find (db, &daddr, &saddr, in_id, 0, proto, fib_index, 1); if (!ste) return -1; - bibe = nat64_db_bib_entry_by_index (&nm->db, proto, ste->bibe_index); + bibe = nat64_db_bib_entry_by_index (db, proto, ste->bibe_index); if (!bibe) return -1; @@ -366,12 +409,12 @@ nat64_in2out_inner_icmp_set_cb (ip6_header_t * ip6, ip4_header_t * ip4, u16 dport = udp->dst_port; ste = - nat64_db_st_entry_find (&nm->db, &daddr, &saddr, dport, sport, proto, + nat64_db_st_entry_find (db, &daddr, &saddr, dport, sport, proto, fib_index, 1); if (!ste) return -1; - bibe = nat64_db_bib_entry_by_index (&nm->db, proto, ste->bibe_index); + bibe = nat64_db_bib_entry_by_index (db, proto, ste->bibe_index); if (!bibe) return -1; @@ -397,6 +440,7 @@ typedef struct unk_proto_st_walk_ctx_t_ ip6_address_t dst_addr; ip4_address_t out_addr; u32 fib_index; + u32 thread_index; u8 proto; } unk_proto_st_walk_ctx_t; @@ -407,24 +451,24 @@ unk_proto_st_walk (nat64_db_st_entry_t * ste, void *arg) unk_proto_st_walk_ctx_t *ctx = arg; nat64_db_bib_entry_t *bibe; ip46_address_t saddr, daddr; + nat64_db_t *db = &nm->db[ctx->thread_index]; if (ip46_address_is_equal (&ste->in_r_addr, &ctx->dst_addr)) { - bibe = - nat64_db_bib_entry_by_index (&nm->db, ste->proto, ste->bibe_index); + bibe = nat64_db_bib_entry_by_index (db, ste->proto, ste->bibe_index); if (!bibe) return -1; if (ip46_address_is_equal (&bibe->in_addr, &ctx->src_addr) && bibe->fib_index == ctx->fib_index) { - memset (&saddr, 0, sizeof (saddr)); + clib_memset (&saddr, 0, sizeof (saddr)); saddr.ip4.as_u32 = bibe->out_addr.as_u32; - memset (&daddr, 0, sizeof (daddr)); + clib_memset (&daddr, 0, sizeof (daddr)); nat64_extract_ip4 (&ctx->dst_addr, &daddr.ip4, ctx->fib_index); if (nat64_db_st_entry_find - (&nm->db, &daddr, &saddr, 0, 0, ctx->proto, ctx->fib_index, 0)) + (db, &daddr, &saddr, 0, 0, ctx->proto, ctx->fib_index, 0)) return -1; ctx->out_addr.as_u32 = bibe->out_addr.as_u32; @@ -440,15 +484,16 @@ nat64_in2out_unk_proto_set_cb (ip6_header_t * ip6, ip4_header_t * ip4, void *arg) { nat64_main_t *nm = &nat64_main; - nat64_in2out_set_ctx_t *ctx = arg; + nat64_in2out_set_ctx_t *s_ctx = arg; nat64_db_bib_entry_t *bibe; nat64_db_st_entry_t *ste; ip46_address_t saddr, daddr, addr; u32 sw_if_index, fib_index; u8 proto = ip6->protocol; int i; + nat64_db_t *db = &nm->db[s_ctx->thread_index]; - sw_if_index = vnet_buffer (ctx->b)->sw_if_index[VLIB_RX]; + sw_if_index = vnet_buffer (s_ctx->b)->sw_if_index[VLIB_RX]; fib_index = fib_table_get_index_for_sw_if_index (FIB_PROTOCOL_IP6, sw_if_index); @@ -458,19 +503,17 @@ nat64_in2out_unk_proto_set_cb (ip6_header_t * ip6, ip4_header_t * ip4, daddr.as_u64[1] = ip6->dst_address.as_u64[1]; ste = - nat64_db_st_entry_find (&nm->db, &saddr, &daddr, 0, 0, proto, fib_index, - 1); + nat64_db_st_entry_find (db, &saddr, &daddr, 0, 0, proto, fib_index, 1); if (ste) { - bibe = nat64_db_bib_entry_by_index (&nm->db, proto, ste->bibe_index); + bibe = nat64_db_bib_entry_by_index (db, proto, ste->bibe_index); if (!bibe) return -1; } else { - bibe = - nat64_db_bib_entry_find (&nm->db, &saddr, 0, proto, fib_index, 1); + bibe = nat64_db_bib_entry_find (db, &saddr, 0, proto, fib_index, 1); if (!bibe) { @@ -483,19 +526,18 @@ nat64_in2out_unk_proto_set_cb (ip6_header_t * ip6, ip4_header_t * ip4, .out_addr.as_u32 = 0, .fib_index = fib_index, .proto = proto, + .thread_index = s_ctx->thread_index, }; - nat64_db_st_walk (&nm->db, IP_PROTOCOL_TCP, unk_proto_st_walk, - &ctx); + nat64_db_st_walk (db, IP_PROTOCOL_TCP, unk_proto_st_walk, &ctx); if (!ctx.out_addr.as_u32) - nat64_db_st_walk (&nm->db, IP_PROTOCOL_UDP, unk_proto_st_walk, - &ctx); + nat64_db_st_walk (db, IP_PROTOCOL_UDP, unk_proto_st_walk, &ctx); /* Verify if out address is not already in use for protocol */ - memset (&addr, 0, sizeof (addr)); + clib_memset (&addr, 0, sizeof (addr)); addr.ip4.as_u32 = ctx.out_addr.as_u32; - if (nat64_db_bib_entry_find (&nm->db, &addr, 0, proto, 0, 0)) + if (nat64_db_bib_entry_find (db, &addr, 0, proto, 0, 0)) ctx.out_addr.as_u32 = 0; if (!ctx.out_addr.as_u32) @@ -503,8 +545,7 @@ nat64_in2out_unk_proto_set_cb (ip6_header_t * ip6, ip4_header_t * ip4, for (i = 0; i < vec_len (nm->addr_pool); i++) { addr.ip4.as_u32 = nm->addr_pool[i].addr.as_u32; - if (!nat64_db_bib_entry_find - (&nm->db, &addr, 0, proto, 0, 0)) + if (!nat64_db_bib_entry_find (db, &addr, 0, proto, 0, 0)) break; } } @@ -513,22 +554,28 @@ nat64_in2out_unk_proto_set_cb (ip6_header_t * ip6, ip4_header_t * ip4, return -1; bibe = - nat64_db_bib_entry_create (&nm->db, &ip6->src_address, - &ctx.out_addr, 0, 0, fib_index, proto, - 0); + nat64_db_bib_entry_create (s_ctx->thread_index, db, + &ip6->src_address, &ctx.out_addr, + 0, 0, fib_index, proto, 0); if (!bibe) return -1; + + vlib_set_simple_counter (&nm->total_bibs, s_ctx->thread_index, 0, + db->bib.bib_entries_num); } nat64_extract_ip4 (&ip6->dst_address, &daddr.ip4, fib_index); ste = - nat64_db_st_entry_create (&nm->db, bibe, &ip6->dst_address, - &daddr.ip4, 0); + nat64_db_st_entry_create (s_ctx->thread_index, db, bibe, + &ip6->dst_address, &daddr.ip4, 0); if (!ste) return -1; + + vlib_set_simple_counter (&nm->total_sessions, s_ctx->thread_index, 0, + db->st.st_entries_num); } - nat64_session_reset_timeout (ste, ctx->vm); + nat64_session_reset_timeout (ste, s_ctx->vm); ip4->src_address.as_u32 = bibe->out_addr.as_u32; ip4->dst_address.as_u32 = ste->out_r_addr.as_u32; @@ -540,7 +587,7 @@ nat64_in2out_unk_proto_set_cb (ip6_header_t * ip6, ip4_header_t * ip4, static int nat64_in2out_tcp_udp_hairpinning (vlib_main_t * vm, vlib_buffer_t * b, - ip6_header_t * ip6) + ip6_header_t * ip6, u32 thread_index) { nat64_main_t *nm = &nat64_main; nat64_db_bib_entry_t *bibe; @@ -554,6 +601,7 @@ nat64_in2out_tcp_udp_hairpinning (vlib_main_t * vm, vlib_buffer_t * b, u16 dport = udp->dst_port; u16 *checksum; ip_csum_t csum; + nat64_db_t *db = &nm->db[thread_index]; sw_if_index = vnet_buffer (b)->sw_if_index[VLIB_RX]; fib_index = @@ -577,19 +625,18 @@ nat64_in2out_tcp_udp_hairpinning (vlib_main_t * vm, vlib_buffer_t * b, csum = ip_csum_sub_even (csum, dport); ste = - nat64_db_st_entry_find (&nm->db, &saddr, &daddr, sport, dport, proto, + nat64_db_st_entry_find (db, &saddr, &daddr, sport, dport, proto, fib_index, 1); if (ste) { - bibe = nat64_db_bib_entry_by_index (&nm->db, proto, ste->bibe_index); + bibe = nat64_db_bib_entry_by_index (db, proto, ste->bibe_index); if (!bibe) return -1; } else { - bibe = - nat64_db_bib_entry_find (&nm->db, &saddr, sport, proto, fib_index, 1); + bibe = nat64_db_bib_entry_find (db, &saddr, sport, proto, fib_index, 1); if (!bibe) { @@ -597,56 +644,55 @@ nat64_in2out_tcp_udp_hairpinning (vlib_main_t * vm, vlib_buffer_t * b, ip4_address_t out_addr; if (nat64_alloc_out_addr_and_port (fib_index, ip_proto_to_snat_proto (proto), &out_addr, - &out_port)) + &out_port, thread_index)) return -1; bibe = - nat64_db_bib_entry_create (&nm->db, &ip6->src_address, &out_addr, - sport, clib_host_to_net_u16 (out_port), - fib_index, proto, 0); + nat64_db_bib_entry_create (thread_index, db, &ip6->src_address, + &out_addr, sport, out_port, fib_index, + proto, 0); if (!bibe) return -1; + + vlib_set_simple_counter (&nm->total_bibs, thread_index, 0, + db->bib.bib_entries_num); } nat64_extract_ip4 (&ip6->dst_address, &daddr.ip4, fib_index); ste = - nat64_db_st_entry_create (&nm->db, bibe, &ip6->dst_address, + nat64_db_st_entry_create (thread_index, db, bibe, &ip6->dst_address, &daddr.ip4, dport); if (!ste) return -1; + + vlib_set_simple_counter (&nm->total_sessions, thread_index, 0, + db->st.st_entries_num); } + if (proto == IP_PROTOCOL_TCP) + nat64_tcp_session_set_state (ste, tcp, 1); + nat64_session_reset_timeout (ste, vm); sport = udp->src_port = bibe->out_port; nat64_compose_ip6 (&ip6->src_address, &bibe->out_addr, fib_index); - memset (&saddr, 0, sizeof (saddr)); - memset (&daddr, 0, sizeof (daddr)); - saddr.ip4.as_u32 = bibe->out_addr.as_u32; + clib_memset (&daddr, 0, sizeof (daddr)); daddr.ip4.as_u32 = ste->out_r_addr.as_u32; - ste = - nat64_db_st_entry_find (&nm->db, &daddr, &saddr, dport, sport, proto, 0, - 0); - - if (ste) - { - bibe = nat64_db_bib_entry_by_index (&nm->db, proto, ste->bibe_index); - if (!bibe) - return -1; - } - else + bibe = 0; + /* *INDENT-OFF* */ + vec_foreach (db, nm->db) { - bibe = nat64_db_bib_entry_find (&nm->db, &daddr, dport, proto, 0, 0); - - if (!bibe) - return -1; + bibe = nat64_db_bib_entry_find (db, &daddr, dport, proto, 0, 0); - ste = - nat64_db_st_entry_create (&nm->db, bibe, &ip6->src_address, - &saddr.ip4, sport); + if (bibe) + break; } + /* *INDENT-ON* */ + + if (!bibe) + return -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]; @@ -665,7 +711,7 @@ nat64_in2out_tcp_udp_hairpinning (vlib_main_t * vm, vlib_buffer_t * b, static int nat64_in2out_icmp_hairpinning (vlib_main_t * vm, vlib_buffer_t * b, - ip6_header_t * ip6) + ip6_header_t * ip6, u32 thread_index) { nat64_main_t *nm = &nat64_main; nat64_db_bib_entry_t *bibe; @@ -679,6 +725,7 @@ nat64_in2out_icmp_hairpinning (vlib_main_t * vm, vlib_buffer_t * b, tcp_header_t *tcp; u16 *checksum, sport, dport; ip_csum_t csum; + nat64_db_t *db = &nm->db[thread_index]; if (icmp->type == ICMP6_echo_request || icmp->type == ICMP6_echo_reply) return -1; @@ -718,30 +765,39 @@ nat64_in2out_icmp_hairpinning (vlib_main_t * vm, vlib_buffer_t * b, csum = ip_csum_sub_even (csum, dport); ste = - nat64_db_st_entry_find (&nm->db, &daddr, &saddr, dport, sport, proto, + nat64_db_st_entry_find (db, &daddr, &saddr, dport, sport, proto, fib_index, 1); if (!ste) return -1; - bibe = nat64_db_bib_entry_by_index (&nm->db, proto, ste->bibe_index); + bibe = nat64_db_bib_entry_by_index (db, proto, ste->bibe_index); if (!bibe) return -1; dport = udp->dst_port = bibe->out_port; nat64_compose_ip6 (&inner_ip6->dst_address, &bibe->out_addr, fib_index); - memset (&saddr, 0, sizeof (saddr)); - memset (&daddr, 0, sizeof (daddr)); + clib_memset (&saddr, 0, sizeof (saddr)); + clib_memset (&daddr, 0, sizeof (daddr)); saddr.ip4.as_u32 = ste->out_r_addr.as_u32; daddr.ip4.as_u32 = bibe->out_addr.as_u32; - ste = - nat64_db_st_entry_find (&nm->db, &saddr, &daddr, sport, dport, proto, 0, - 0); + ste = 0; + /* *INDENT-OFF* */ + vec_foreach (db, nm->db) + { + ste = nat64_db_st_entry_find (db, &saddr, &daddr, sport, dport, proto, + 0, 0); + + if (ste) + break; + } + /* *INDENT-ON* */ + if (!ste) return -1; - bibe = nat64_db_bib_entry_by_index (&nm->db, proto, ste->bibe_index); + bibe = nat64_db_bib_entry_by_index (db, proto, ste->bibe_index); if (!bibe) return -1; @@ -781,7 +837,7 @@ nat64_in2out_icmp_hairpinning (vlib_main_t * vm, vlib_buffer_t * b, static int nat64_in2out_unk_proto_hairpinning (vlib_main_t * vm, vlib_buffer_t * b, - ip6_header_t * ip6) + ip6_header_t * ip6, u32 thread_index) { nat64_main_t *nm = &nat64_main; nat64_db_bib_entry_t *bibe; @@ -790,6 +846,7 @@ nat64_in2out_unk_proto_hairpinning (vlib_main_t * vm, vlib_buffer_t * b, u32 sw_if_index, fib_index; u8 proto = ip6->protocol; int i; + nat64_db_t *db = &nm->db[thread_index]; sw_if_index = vnet_buffer (b)->sw_if_index[VLIB_RX]; fib_index = @@ -801,19 +858,17 @@ nat64_in2out_unk_proto_hairpinning (vlib_main_t * vm, vlib_buffer_t * b, daddr.as_u64[1] = ip6->dst_address.as_u64[1]; ste = - nat64_db_st_entry_find (&nm->db, &saddr, &daddr, 0, 0, proto, fib_index, - 1); + nat64_db_st_entry_find (db, &saddr, &daddr, 0, 0, proto, fib_index, 1); if (ste) { - bibe = nat64_db_bib_entry_by_index (&nm->db, proto, ste->bibe_index); + bibe = nat64_db_bib_entry_by_index (db, proto, ste->bibe_index); if (!bibe) return -1; } else { - bibe = - nat64_db_bib_entry_find (&nm->db, &saddr, 0, proto, fib_index, 1); + bibe = nat64_db_bib_entry_find (db, &saddr, 0, proto, fib_index, 1); if (!bibe) { @@ -826,19 +881,18 @@ nat64_in2out_unk_proto_hairpinning (vlib_main_t * vm, vlib_buffer_t * b, .out_addr.as_u32 = 0, .fib_index = fib_index, .proto = proto, + .thread_index = thread_index, }; - nat64_db_st_walk (&nm->db, IP_PROTOCOL_TCP, unk_proto_st_walk, - &ctx); + nat64_db_st_walk (db, IP_PROTOCOL_TCP, unk_proto_st_walk, &ctx); if (!ctx.out_addr.as_u32) - nat64_db_st_walk (&nm->db, IP_PROTOCOL_UDP, unk_proto_st_walk, - &ctx); + nat64_db_st_walk (db, IP_PROTOCOL_UDP, unk_proto_st_walk, &ctx); /* Verify if out address is not already in use for protocol */ - memset (&addr, 0, sizeof (addr)); + clib_memset (&addr, 0, sizeof (addr)); addr.ip4.as_u32 = ctx.out_addr.as_u32; - if (nat64_db_bib_entry_find (&nm->db, &addr, 0, proto, 0, 0)) + if (nat64_db_bib_entry_find (db, &addr, 0, proto, 0, 0)) ctx.out_addr.as_u32 = 0; if (!ctx.out_addr.as_u32) @@ -846,8 +900,7 @@ nat64_in2out_unk_proto_hairpinning (vlib_main_t * vm, vlib_buffer_t * b, for (i = 0; i < vec_len (nm->addr_pool); i++) { addr.ip4.as_u32 = nm->addr_pool[i].addr.as_u32; - if (!nat64_db_bib_entry_find - (&nm->db, &addr, 0, proto, 0, 0)) + if (!nat64_db_bib_entry_find (db, &addr, 0, proto, 0, 0)) break; } } @@ -856,49 +909,47 @@ nat64_in2out_unk_proto_hairpinning (vlib_main_t * vm, vlib_buffer_t * b, return -1; bibe = - nat64_db_bib_entry_create (&nm->db, &ip6->src_address, + nat64_db_bib_entry_create (thread_index, db, &ip6->src_address, &ctx.out_addr, 0, 0, fib_index, proto, 0); if (!bibe) return -1; + + vlib_set_simple_counter (&nm->total_bibs, thread_index, 0, + db->bib.bib_entries_num); } nat64_extract_ip4 (&ip6->dst_address, &daddr.ip4, fib_index); ste = - nat64_db_st_entry_create (&nm->db, bibe, &ip6->dst_address, + nat64_db_st_entry_create (thread_index, db, bibe, &ip6->dst_address, &daddr.ip4, 0); if (!ste) return -1; + + vlib_set_simple_counter (&nm->total_sessions, thread_index, 0, + db->st.st_entries_num); } nat64_session_reset_timeout (ste, vm); nat64_compose_ip6 (&ip6->src_address, &bibe->out_addr, fib_index); - memset (&saddr, 0, sizeof (saddr)); - memset (&daddr, 0, sizeof (daddr)); - saddr.ip4.as_u32 = bibe->out_addr.as_u32; + clib_memset (&daddr, 0, sizeof (daddr)); daddr.ip4.as_u32 = ste->out_r_addr.as_u32; - ste = nat64_db_st_entry_find (&nm->db, &daddr, &saddr, 0, 0, proto, 0, 0); - - if (ste) - { - bibe = nat64_db_bib_entry_by_index (&nm->db, proto, ste->bibe_index); - if (!bibe) - return -1; - } - else + bibe = 0; + /* *INDENT-OFF* */ + vec_foreach (db, nm->db) { - bibe = nat64_db_bib_entry_find (&nm->db, &daddr, 0, proto, 0, 0); + bibe = nat64_db_bib_entry_find (db, &daddr, 0, proto, 0, 0); - if (!bibe) - return -1; - - ste = - nat64_db_st_entry_create (&nm->db, bibe, &ip6->src_address, - &saddr.ip4, 0); + if (bibe) + break; } + /* *INDENT-ON* */ + + if (!bibe) + return -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]; @@ -914,9 +965,14 @@ nat64_in2out_node_fn_inline (vlib_main_t * vm, vlib_node_runtime_t * node, nat64_in2out_next_t next_index; u32 pkts_processed = 0; u32 stats_node_index; + u32 thread_index = vm->thread_index; + nat64_main_t *nm = &nat64_main; + + u32 tcp_packets = 0, udp_packets = 0, icmp_packets = 0, other_packets = + 0, fragments = 0; stats_node_index = - is_slow_path ? nat64_in2out_slowpath_node.index : nat64_in2out_node.index; + is_slow_path ? nm->in2out_slowpath_node_index : nm->in2out_node_index; from = vlib_frame_vector_args (frame); n_left_from = frame->n_vectors; @@ -938,6 +994,7 @@ nat64_in2out_node_fn_inline (vlib_main_t * vm, vlib_node_runtime_t * node, u8 l4_protocol0; u32 proto0; nat64_in2out_set_ctx_t ctx0; + u32 sw_if_index0; /* speculatively enqueue b0 to the current next frame */ bi0 = from[0]; @@ -952,6 +1009,7 @@ nat64_in2out_node_fn_inline (vlib_main_t * vm, vlib_node_runtime_t * node, ctx0.b = b0; ctx0.vm = vm; + ctx0.thread_index = thread_index; next0 = NAT64_IN2OUT_NEXT_IP4_LOOKUP; @@ -965,16 +1023,26 @@ nat64_in2out_node_fn_inline (vlib_main_t * vm, vlib_node_runtime_t * node, goto trace0; } + sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX]; + + if (nat64_not_translate (sw_if_index0, ip60->dst_address)) + { + next0 = NAT64_IN2OUT_NEXT_IP6_LOOKUP; + goto trace0; + } + proto0 = ip_proto_to_snat_proto (l4_protocol0); if (is_slow_path) { if (PREDICT_TRUE (proto0 == ~0)) { + other_packets++; if (is_hairpinning (&ip60->dst_address)) { next0 = NAT64_IN2OUT_NEXT_IP6_LOOKUP; - if (nat64_in2out_unk_proto_hairpinning (vm, b0, ip60)) + if (nat64_in2out_unk_proto_hairpinning + (vm, b0, ip60, thread_index)) { next0 = NAT64_IN2OUT_NEXT_DROP; b0->error = @@ -1006,15 +1074,18 @@ nat64_in2out_node_fn_inline (vlib_main_t * vm, vlib_node_runtime_t * node, (ip60->protocol == IP_PROTOCOL_IPV6_FRAGMENTATION)) { next0 = NAT64_IN2OUT_NEXT_REASS; + fragments++; goto trace0; } if (proto0 == SNAT_PROTOCOL_ICMP) { + icmp_packets++; if (is_hairpinning (&ip60->dst_address)) { next0 = NAT64_IN2OUT_NEXT_IP6_LOOKUP; - if (nat64_in2out_icmp_hairpinning (vm, b0, ip60)) + if (nat64_in2out_icmp_hairpinning + (vm, b0, ip60, thread_index)) { next0 = NAT64_IN2OUT_NEXT_DROP; b0->error = @@ -1034,10 +1105,16 @@ nat64_in2out_node_fn_inline (vlib_main_t * vm, vlib_node_runtime_t * node, } else if (proto0 == SNAT_PROTOCOL_TCP || proto0 == SNAT_PROTOCOL_UDP) { + if (proto0 == SNAT_PROTOCOL_TCP) + tcp_packets++; + else + udp_packets++; + if (is_hairpinning (&ip60->dst_address)) { next0 = NAT64_IN2OUT_NEXT_IP6_LOOKUP; - if (nat64_in2out_tcp_udp_hairpinning (vm, b0, ip60)) + if (nat64_in2out_tcp_udp_hairpinning + (vm, b0, ip60, thread_index)) { next0 = NAT64_IN2OUT_NEXT_DROP; b0->error = @@ -1066,7 +1143,7 @@ nat64_in2out_node_fn_inline (vlib_main_t * vm, vlib_node_runtime_t * node, t->is_slow_path = is_slow_path; } - pkts_processed += next0 != NAT64_IN2OUT_NEXT_DROP; + pkts_processed += next0 == NAT64_IN2OUT_NEXT_IP4_LOOKUP; /* verify speculative enqueue, maybe switch current next frame */ vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next, @@ -1077,19 +1154,30 @@ nat64_in2out_node_fn_inline (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_node_increment_counter (vm, stats_node_index, NAT64_IN2OUT_ERROR_IN2OUT_PACKETS, pkts_processed); + vlib_node_increment_counter (vm, stats_node_index, + NAT64_IN2OUT_ERROR_TCP_PACKETS, tcp_packets); + vlib_node_increment_counter (vm, stats_node_index, + NAT64_IN2OUT_ERROR_UDP_PACKETS, tcp_packets); + vlib_node_increment_counter (vm, stats_node_index, + NAT64_IN2OUT_ERROR_ICMP_PACKETS, icmp_packets); + vlib_node_increment_counter (vm, stats_node_index, + NAT64_IN2OUT_ERROR_OTHER_PACKETS, + other_packets); + vlib_node_increment_counter (vm, stats_node_index, + NAT64_IN2OUT_ERROR_FRAGMENTS, fragments); + return frame->n_vectors; } -static uword -nat64_in2out_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node, - vlib_frame_t * frame) +VLIB_NODE_FN (nat64_in2out_node) (vlib_main_t * vm, + vlib_node_runtime_t * node, + vlib_frame_t * frame) { return nat64_in2out_node_fn_inline (vm, node, frame, 0); } /* *INDENT-OFF* */ VLIB_REGISTER_NODE (nat64_in2out_node) = { - .function = nat64_in2out_node_fn, .name = "nat64-in2out", .vector_size = sizeof (u32), .format_trace = format_nat64_in2out_trace, @@ -1108,18 +1196,15 @@ VLIB_REGISTER_NODE (nat64_in2out_node) = { }; /* *INDENT-ON* */ -VLIB_NODE_FUNCTION_MULTIARCH (nat64_in2out_node, nat64_in2out_node_fn); - -static uword -nat64_in2out_slowpath_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node, - vlib_frame_t * frame) +VLIB_NODE_FN (nat64_in2out_slowpath_node) (vlib_main_t * vm, + vlib_node_runtime_t * node, + vlib_frame_t * frame) { return nat64_in2out_node_fn_inline (vm, node, frame, 1); } /* *INDENT-OFF* */ VLIB_REGISTER_NODE (nat64_in2out_slowpath_node) = { - .function = nat64_in2out_slowpath_node_fn, .name = "nat64-in2out-slowpath", .vector_size = sizeof (u32), .format_trace = format_nat64_in2out_trace, @@ -1138,13 +1223,11 @@ VLIB_REGISTER_NODE (nat64_in2out_slowpath_node) = { }; /* *INDENT-ON* */ -VLIB_NODE_FUNCTION_MULTIARCH (nat64_in2out_slowpath_node, - nat64_in2out_slowpath_node_fn); - typedef struct nat64_in2out_frag_set_ctx_t_ { vlib_main_t *vm; u32 sess_index; + u32 thread_index; u16 l4_offset; u8 proto; u8 first_frag; @@ -1158,12 +1241,13 @@ nat64_in2out_frag_set_cb (ip6_header_t * ip6, ip4_header_t * ip4, void *arg) nat64_db_st_entry_t *ste; nat64_db_bib_entry_t *bibe; udp_header_t *udp; + nat64_db_t *db = &nm->db[ctx->thread_index]; - ste = nat64_db_st_entry_by_index (&nm->db, ctx->proto, ctx->sess_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 (&nm->db, ctx->proto, ste->bibe_index); + bibe = nat64_db_bib_entry_by_index (db, ctx->proto, ste->bibe_index); if (!bibe) return -1; @@ -1179,6 +1263,7 @@ nat64_in2out_frag_set_cb (ip6_header_t * ip6, ip4_header_t * ip4, void *arg) ip_csum_t csum; tcp_header_t *tcp = (tcp_header_t *) udp; + nat64_tcp_session_set_state (ste, tcp, 1); checksum = &tcp->checksum; csum = ip_csum_sub_even (*checksum, tcp->src_port); csum = ip_csum_sub_even (csum, ip6->src_address.as_u64[0]); @@ -1213,7 +1298,8 @@ nat64_in2out_frag_hairpinning (vlib_buffer_t * b, ip6_header_t * ip6, u16 dport = udp->dst_port; u16 *checksum; ip_csum_t csum; - ip46_address_t saddr, daddr; + ip46_address_t daddr; + nat64_db_t *db = &nm->db[ctx->thread_index]; if (ctx->first_frag) { @@ -1230,14 +1316,17 @@ nat64_in2out_frag_hairpinning (vlib_buffer_t * b, ip6_header_t * ip6, csum = ip_csum_sub_even (csum, dport); } - ste = nat64_db_st_entry_by_index (&nm->db, ctx->proto, ctx->sess_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 (&nm->db, ctx->proto, ste->bibe_index); + bibe = nat64_db_bib_entry_by_index (db, ctx->proto, ste->bibe_index); if (!bibe) return -1; + if (ctx->proto == IP_PROTOCOL_TCP) + nat64_tcp_session_set_state (ste, tcp, 1); + nat64_session_reset_timeout (ste, ctx->vm); sport = bibe->out_port; @@ -1245,34 +1334,22 @@ nat64_in2out_frag_hairpinning (vlib_buffer_t * b, ip6_header_t * ip6, nat64_compose_ip6 (&ip6->src_address, &bibe->out_addr, bibe->fib_index); - memset (&saddr, 0, sizeof (saddr)); - memset (&daddr, 0, sizeof (daddr)); - saddr.ip4.as_u32 = bibe->out_addr.as_u32; + clib_memset (&daddr, 0, sizeof (daddr)); daddr.ip4.as_u32 = ste->out_r_addr.as_u32; - ste = - nat64_db_st_entry_find (&nm->db, &daddr, &saddr, dport, sport, ctx->proto, - 0, 0); - - if (ste) - { - bibe = - nat64_db_bib_entry_by_index (&nm->db, ctx->proto, ste->bibe_index); - if (!bibe) - return -1; - } - else + bibe = 0; + /* *INDENT-OFF* */ + vec_foreach (db, nm->db) { - bibe = - nat64_db_bib_entry_find (&nm->db, &daddr, dport, ctx->proto, 0, 0); - - if (!bibe) - return -1; + bibe = nat64_db_bib_entry_find (db, &daddr, dport, ctx->proto, 0, 0); - ste = - nat64_db_st_entry_create (&nm->db, bibe, &ip6->src_address, - &saddr.ip4, sport); + if (bibe) + break; } + /* *INDENT-ON* */ + + if (!bibe) + return -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]; @@ -1293,16 +1370,17 @@ nat64_in2out_frag_hairpinning (vlib_buffer_t * b, ip6_header_t * ip6, return 0; } -static uword -nat64_in2out_reass_node_fn (vlib_main_t * vm, - vlib_node_runtime_t * node, vlib_frame_t * frame) +VLIB_NODE_FN (nat64_in2out_reass_node) (vlib_main_t * vm, + vlib_node_runtime_t * node, + vlib_frame_t * frame) { u32 n_left_from, *from, *to_next; nat64_in2out_next_t next_index; - u32 pkts_processed = 0; + 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; @@ -1332,6 +1410,7 @@ nat64_in2out_reass_node_fn (vlib_main_t * vm, u32 sw_if_index0, fib_index0; ip46_address_t saddr0, daddr0; nat64_in2out_frag_set_ctx_t ctx0; + nat64_db_t *db = &nm->db[thread_index]; /* speculatively enqueue b0 to the current next frame */ bi0 = from[0]; @@ -1349,6 +1428,8 @@ nat64_in2out_reass_node_fn (vlib_main_t * vm, fib_table_get_index_for_sw_if_index (FIB_PROTOCOL_IP6, sw_if_index0); + ctx0.thread_index = thread_index; + if (PREDICT_FALSE (nat_reass_is_drop_frag (1))) { next0 = NAT64_IN2OUT_NEXT_DROP; @@ -1399,7 +1480,8 @@ nat64_in2out_reass_node_fn (vlib_main_t * vm, ctx0.first_frag = 0; if (PREDICT_FALSE (reass0->sess_index == (u32) ~ 0)) { - if (nat_ip6_reass_add_fragment (reass0, bi0)) + if (nat_ip6_reass_add_fragment + (thread_index, reass0, bi0, &fragments_to_drop)) { b0->error = node->errors[NAT64_IN2OUT_ERROR_MAX_FRAG]; next0 = NAT64_IN2OUT_NEXT_DROP; @@ -1419,20 +1501,21 @@ nat64_in2out_reass_node_fn (vlib_main_t * vm, daddr0.as_u64[1] = ip60->dst_address.as_u64[1]; ste0 = - nat64_db_st_entry_find (&nm->db, &saddr0, &daddr0, + nat64_db_st_entry_find (db, &saddr0, &daddr0, udp0->src_port, udp0->dst_port, l4_protocol0, fib_index0, 1); if (!ste0) { bibe0 = - nat64_db_bib_entry_find (&nm->db, &saddr0, udp0->src_port, + nat64_db_bib_entry_find (db, &saddr0, udp0->src_port, l4_protocol0, fib_index0, 1); if (!bibe0) { u16 out_port0; ip4_address_t out_addr0; if (nat64_alloc_out_addr_and_port - (fib_index0, proto0, &out_addr0, &out_port0)) + (fib_index0, proto0, &out_addr0, &out_port0, + thread_index)) { next0 = NAT64_IN2OUT_NEXT_DROP; b0->error = @@ -1441,11 +1524,10 @@ nat64_in2out_reass_node_fn (vlib_main_t * vm, } bibe0 = - nat64_db_bib_entry_create (&nm->db, + nat64_db_bib_entry_create (thread_index, db, &ip60->src_address, &out_addr0, udp0->src_port, - clib_host_to_net_u16 - (out_port0), fib_index0, + out_port0, fib_index0, l4_protocol0, 0); if (!bibe0) { @@ -1454,11 +1536,13 @@ nat64_in2out_reass_node_fn (vlib_main_t * vm, node->errors[NAT64_IN2OUT_ERROR_NO_TRANSLATION]; goto trace0; } + vlib_set_simple_counter (&nm->total_bibs, thread_index, + 0, db->bib.bib_entries_num); } nat64_extract_ip4 (&ip60->dst_address, &daddr0.ip4, fib_index0); ste0 = - nat64_db_st_entry_create (&nm->db, bibe0, + nat64_db_st_entry_create (thread_index, db, bibe0, &ip60->dst_address, &daddr0.ip4, udp0->dst_port); if (!ste0) @@ -1468,9 +1552,11 @@ nat64_in2out_reass_node_fn (vlib_main_t * vm, node->errors[NAT64_IN2OUT_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 (&nm->db, ste0); + reass0->sess_index = nat64_db_st_entry_get_index (db, ste0); nat_ip6_reass_get_frags (reass0, &fragments_to_loopback); } @@ -1516,6 +1602,7 @@ nat64_in2out_reass_node_fn (vlib_main_t * vm, { n_left_to_next++; to_next--; + cached_fragments++; } else { @@ -1533,17 +1620,16 @@ nat64_in2out_reass_node_fn (vlib_main_t * vm, u32 len = vec_len (fragments_to_loopback); if (len <= VLIB_FRAME_SIZE) { - clib_memcpy (from, fragments_to_loopback, - sizeof (u32) * len); + clib_memcpy_fast (from, fragments_to_loopback, + sizeof (u32) * len); n_left_from = len; vec_reset_length (fragments_to_loopback); } else { - clib_memcpy (from, - fragments_to_loopback + (len - - VLIB_FRAME_SIZE), - sizeof (u32) * VLIB_FRAME_SIZE); + 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; } @@ -1553,9 +1639,12 @@ nat64_in2out_reass_node_fn (vlib_main_t * vm, vlib_put_next_frame (vm, node, next_index, n_left_to_next); } - vlib_node_increment_counter (vm, nat64_in2out_reass_node.index, - NAT64_IN2OUT_ERROR_IN2OUT_PACKETS, + vlib_node_increment_counter (vm, nm->in2out_reass_node_index, + NAT64_IN2OUT_ERROR_PROCESSED_FRAGMENTS, pkts_processed); + vlib_node_increment_counter (vm, nm->in2out_reass_node_index, + NAT64_IN2OUT_ERROR_CACHED_FRAGMENTS, + cached_fragments); nat_send_all_to_node (vm, fragments_to_drop, node, &node->errors[NAT64_IN2OUT_ERROR_DROP_FRAGMENT], @@ -1568,7 +1657,6 @@ nat64_in2out_reass_node_fn (vlib_main_t * vm, /* *INDENT-OFF* */ VLIB_REGISTER_NODE (nat64_in2out_reass_node) = { - .function = nat64_in2out_reass_node_fn, .name = "nat64-in2out-reass", .vector_size = sizeof (u32), .format_trace = format_nat64_in2out_reass_trace, @@ -1587,8 +1675,125 @@ VLIB_REGISTER_NODE (nat64_in2out_reass_node) = { }; /* *INDENT-ON* */ -VLIB_NODE_FUNCTION_MULTIARCH (nat64_in2out_reass_node, - nat64_in2out_reass_node_fn); +#define foreach_nat64_in2out_handoff_error \ +_(CONGESTION_DROP, "congestion drop") \ +_(SAME_WORKER, "same worker") \ +_(DO_HANDOFF, "do handoff") + +typedef enum +{ +#define _(sym,str) NAT64_IN2OUT_HANDOFF_ERROR_##sym, + foreach_nat64_in2out_handoff_error +#undef _ + NAT64_IN2OUT_HANDOFF_N_ERROR, +} nat64_in2out_handoff_error_t; + +static char *nat64_in2out_handoff_error_strings[] = { +#define _(sym,string) string, + foreach_nat64_in2out_handoff_error +#undef _ +}; + +typedef struct +{ + u32 next_worker_index; +} nat64_in2out_handoff_trace_t; + +static u8 * +format_nat64_in2out_handoff_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_in2out_handoff_trace_t *t = + va_arg (*args, nat64_in2out_handoff_trace_t *); + + s = + format (s, "NAT64-IN2OUT-HANDOFF: next-worker %d", t->next_worker_index); + + return s; +} + +VLIB_NODE_FN (nat64_in2out_handoff_node) (vlib_main_t * vm, + vlib_node_runtime_t * node, + vlib_frame_t * frame) +{ + nat64_main_t *nm = &nat64_main; + vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b; + u32 n_enq, n_left_from, *from; + u16 thread_indices[VLIB_FRAME_SIZE], *ti; + u32 fq_index; + u32 thread_index = vm->thread_index; + u32 do_handoff = 0, same_worker = 0; + + from = vlib_frame_vector_args (frame); + n_left_from = frame->n_vectors; + vlib_get_buffers (vm, from, bufs, n_left_from); + + b = bufs; + ti = thread_indices; + + fq_index = nm->fq_in2out_index; + + while (n_left_from > 0) + { + ip6_header_t *ip0; + + ip0 = vlib_buffer_get_current (b[0]); + ti[0] = nat64_get_worker_in2out (&ip0->src_address); + + if (ti[0] != thread_index) + do_handoff++; + else + same_worker++; + + if (PREDICT_FALSE + ((node->flags & VLIB_NODE_FLAG_TRACE) + && (b[0]->flags & VLIB_BUFFER_IS_TRACED))) + { + nat64_in2out_handoff_trace_t *t = + vlib_add_trace (vm, node, b[0], sizeof (*t)); + t->next_worker_index = ti[0]; + } + + n_left_from -= 1; + ti += 1; + b += 1; + } + + n_enq = + vlib_buffer_enqueue_to_thread (vm, fq_index, from, thread_indices, + frame->n_vectors, 1); + + if (n_enq < frame->n_vectors) + vlib_node_increment_counter (vm, node->node_index, + NAT64_IN2OUT_HANDOFF_ERROR_CONGESTION_DROP, + frame->n_vectors - n_enq); + vlib_node_increment_counter (vm, node->node_index, + NAT64_IN2OUT_HANDOFF_ERROR_SAME_WORKER, + same_worker); + vlib_node_increment_counter (vm, node->node_index, + NAT64_IN2OUT_HANDOFF_ERROR_DO_HANDOFF, + do_handoff); + + return frame->n_vectors; +} + +/* *INDENT-OFF* */ +VLIB_REGISTER_NODE (nat64_in2out_handoff_node) = { + .name = "nat64-in2out-handoff", + .vector_size = sizeof (u32), + .format_trace = format_nat64_in2out_handoff_trace, + .type = VLIB_NODE_TYPE_INTERNAL, + .n_errors = ARRAY_LEN(nat64_in2out_handoff_error_strings), + .error_strings = nat64_in2out_handoff_error_strings, + + .n_next_nodes = 1, + + .next_nodes = { + [0] = "error-drop", + }, +}; +/* *INDENT-ON* */ /* * fd.io coding-style-patch-verification: ON