17c478bd9Sstevel@tonic-gate /* 27c478bd9Sstevel@tonic-gate * CDDL HEADER START 37c478bd9Sstevel@tonic-gate * 47c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5e4f35dbaSgt * Common Development and Distribution License (the "License"). 6e4f35dbaSgt * You may not use this file except in compliance with the License. 77c478bd9Sstevel@tonic-gate * 87c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 97c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 107c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions 117c478bd9Sstevel@tonic-gate * and limitations under the License. 127c478bd9Sstevel@tonic-gate * 137c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 147c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 157c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 167c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 177c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 187c478bd9Sstevel@tonic-gate * 197c478bd9Sstevel@tonic-gate * CDDL HEADER END 207c478bd9Sstevel@tonic-gate */ 217c478bd9Sstevel@tonic-gate /* 223e95bd4aSAnders Persson * Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved. 23*3e8b6b84SRobert Mustacchi * Copyright 2015, Joyent, Inc. 247c478bd9Sstevel@tonic-gate */ 257c478bd9Sstevel@tonic-gate 267c478bd9Sstevel@tonic-gate #ifndef _UDP_IMPL_H 277c478bd9Sstevel@tonic-gate #define _UDP_IMPL_H 287c478bd9Sstevel@tonic-gate 29ff550d0eSmasputra /* 30ff550d0eSmasputra * UDP implementation private declarations. These interfaces are 31ff550d0eSmasputra * used to build the IP module and are not meant to be accessed 32ff550d0eSmasputra * by any modules except IP itself. They are undocumented and are 33ff550d0eSmasputra * subject to change without notice. 34ff550d0eSmasputra */ 35ff550d0eSmasputra 367c478bd9Sstevel@tonic-gate #ifdef __cplusplus 377c478bd9Sstevel@tonic-gate extern "C" { 387c478bd9Sstevel@tonic-gate #endif 397c478bd9Sstevel@tonic-gate 407c478bd9Sstevel@tonic-gate #ifdef _KERNEL 417c478bd9Sstevel@tonic-gate 427c478bd9Sstevel@tonic-gate #include <sys/int_types.h> 43f4b3ec61Sdh #include <sys/netstack.h> 447c478bd9Sstevel@tonic-gate 457c478bd9Sstevel@tonic-gate #include <netinet/in.h> 467c478bd9Sstevel@tonic-gate #include <netinet/ip6.h> 477c478bd9Sstevel@tonic-gate 487c478bd9Sstevel@tonic-gate #include <inet/common.h> 497c478bd9Sstevel@tonic-gate #include <inet/ip.h> 5045916cd2Sjpk #include <inet/optcom.h> 516e91bba0SGirish Moodalbail #include <inet/tunables.h> 527c478bd9Sstevel@tonic-gate 53ff550d0eSmasputra #define UDP_MOD_ID 5607 54ff550d0eSmasputra 55f4b3ec61Sdh /* 56f4b3ec61Sdh * Bind hash list size and hash function. It has to be a power of 2 for 57f4b3ec61Sdh * hashing. 58f4b3ec61Sdh */ 59f4b3ec61Sdh #define UDP_BIND_FANOUT_SIZE 512 60f4b3ec61Sdh #define UDP_BIND_HASH(lport, size) \ 61f4b3ec61Sdh ((ntohs((uint16_t)lport)) & (size - 1)) 62f4b3ec61Sdh 63f4b3ec61Sdh /* UDP bind fanout hash structure. */ 64f4b3ec61Sdh typedef struct udp_fanout_s { 65f4b3ec61Sdh struct udp_s *uf_udp; 66f4b3ec61Sdh kmutex_t uf_lock; 67f4b3ec61Sdh #if defined(_LP64) || defined(_I32LPx) 68f4b3ec61Sdh char uf_pad[48]; 69f4b3ec61Sdh #else 70f4b3ec61Sdh char uf_pad[56]; 71f4b3ec61Sdh #endif 72f4b3ec61Sdh } udp_fanout_t; 73f4b3ec61Sdh 74f4b3ec61Sdh /* Kstats */ 75f4b3ec61Sdh typedef struct udp_stat { /* Class "net" kstats */ 76f4b3ec61Sdh kstat_named_t udp_sock_fallback; 77f4b3ec61Sdh kstat_named_t udp_out_opt; 78f4b3ec61Sdh kstat_named_t udp_out_err_notconn; 79f4b3ec61Sdh kstat_named_t udp_out_err_output; 80f4b3ec61Sdh kstat_named_t udp_out_err_tudr; 81f4b3ec61Sdh #ifdef DEBUG 82f4b3ec61Sdh kstat_named_t udp_data_conn; 83f4b3ec61Sdh kstat_named_t udp_data_notconn; 84bd670b35SErik Nordmark kstat_named_t udp_out_lastdst; 85bd670b35SErik Nordmark kstat_named_t udp_out_diffdst; 86bd670b35SErik Nordmark kstat_named_t udp_out_ipv6; 87bd670b35SErik Nordmark kstat_named_t udp_out_mapped; 88bd670b35SErik Nordmark kstat_named_t udp_out_ipv4; 89f4b3ec61Sdh #endif 90f4b3ec61Sdh } udp_stat_t; 91f4b3ec61Sdh 925dd46ab5SKacheong Poon /* 935dd46ab5SKacheong Poon * This struct contains only the counter part of udp_stat_t. It is used 945dd46ab5SKacheong Poon * in udp_stats_cpu_t instead of udp_stat_t to save memory space. 955dd46ab5SKacheong Poon */ 965dd46ab5SKacheong Poon typedef struct { 975dd46ab5SKacheong Poon uint64_t udp_sock_fallback; 985dd46ab5SKacheong Poon uint64_t udp_out_opt; 995dd46ab5SKacheong Poon uint64_t udp_out_err_notconn; 1005dd46ab5SKacheong Poon uint64_t udp_out_err_output; 1015dd46ab5SKacheong Poon uint64_t udp_out_err_tudr; 1025dd46ab5SKacheong Poon #ifdef DEBUG 1035dd46ab5SKacheong Poon uint64_t udp_data_conn; 1045dd46ab5SKacheong Poon uint64_t udp_data_notconn; 1055dd46ab5SKacheong Poon uint64_t udp_out_lastdst; 1065dd46ab5SKacheong Poon uint64_t udp_out_diffdst; 1075dd46ab5SKacheong Poon uint64_t udp_out_ipv6; 1085dd46ab5SKacheong Poon uint64_t udp_out_mapped; 1095dd46ab5SKacheong Poon uint64_t udp_out_ipv4; 1105dd46ab5SKacheong Poon #endif 1115dd46ab5SKacheong Poon } udp_stat_counter_t; 1125dd46ab5SKacheong Poon 1135dd46ab5SKacheong Poon /* Per CPU stats: UDP MIB2 and UDP kstat. */ 1145dd46ab5SKacheong Poon typedef struct { 1155dd46ab5SKacheong Poon mib2_udp_t udp_sc_mib; 1165dd46ab5SKacheong Poon udp_stat_counter_t udp_sc_stats; 1175dd46ab5SKacheong Poon } udp_stats_cpu_t; 1185dd46ab5SKacheong Poon 119f4b3ec61Sdh #define UDP_NUM_EPRIV_PORTS 64 120f4b3ec61Sdh 1216e91bba0SGirish Moodalbail /* Default buffer size and flow control wake up threshold. */ 1226e91bba0SGirish Moodalbail #define UDP_RECV_HIWATER (56 * 1024) 1236e91bba0SGirish Moodalbail #define UDP_RECV_LOWATER 128 1246e91bba0SGirish Moodalbail #define UDP_XMIT_HIWATER (56 * 1024) 1256e91bba0SGirish Moodalbail #define UDP_XMIT_LOWATER 1024 1266e91bba0SGirish Moodalbail 127f4b3ec61Sdh /* 128f4b3ec61Sdh * UDP stack instances 129f4b3ec61Sdh */ 130f4b3ec61Sdh struct udp_stack { 131f4b3ec61Sdh netstack_t *us_netstack; /* Common netstack */ 132f4b3ec61Sdh 133f4b3ec61Sdh uint_t us_bind_fanout_size; 134f4b3ec61Sdh udp_fanout_t *us_bind_fanout; 135f4b3ec61Sdh 136f4b3ec61Sdh int us_num_epriv_ports; 137f4b3ec61Sdh in_port_t us_epriv_ports[UDP_NUM_EPRIV_PORTS]; 1386e91bba0SGirish Moodalbail kmutex_t us_epriv_port_lock; 139f4b3ec61Sdh 140f4b3ec61Sdh /* Hint not protected by any lock */ 141f4b3ec61Sdh in_port_t us_next_port_to_try; 142f4b3ec61Sdh 1436e91bba0SGirish Moodalbail /* UDP tunables table */ 1446e91bba0SGirish Moodalbail struct mod_prop_info_s *us_propinfo_tbl; 145f4b3ec61Sdh 146f4b3ec61Sdh kstat_t *us_mibkp; /* kstats exporting mib data */ 147f4b3ec61Sdh kstat_t *us_kstat; 148f4b3ec61Sdh 149f4b3ec61Sdh /* 150f4b3ec61Sdh * The smallest anonymous port in the priviledged port range which UDP 151f4b3ec61Sdh * looks for free port. Use in the option UDP_ANONPRIVBIND. 152f4b3ec61Sdh */ 153f4b3ec61Sdh in_port_t us_min_anonpriv_port; 154f4b3ec61Sdh 1550f1702c5SYu Xiangning ldi_ident_t us_ldi_ident; 1565dd46ab5SKacheong Poon 1575dd46ab5SKacheong Poon udp_stats_cpu_t **us_sc; 1585dd46ab5SKacheong Poon int us_sc_cnt; 159f4b3ec61Sdh }; 1600f1702c5SYu Xiangning 161f4b3ec61Sdh typedef struct udp_stack udp_stack_t; 162f4b3ec61Sdh 1637c478bd9Sstevel@tonic-gate /* Internal udp control structure, one per open stream */ 1647c478bd9Sstevel@tonic-gate typedef struct udp_s { 165fc80c0dfSnordmark /* 166bd670b35SErik Nordmark * The addresses and ports in the conn_t and udp_state are protected by 167bd670b35SErik Nordmark * conn_lock and the fanout lock i.e. uf_lock. Need both locks to change 168bd670b35SErik Nordmark * the fields, either lock is sufficient for reading the field. 169bd670b35SErik Nordmark * conn_lock also protects the content of udp_t. 170fc80c0dfSnordmark */ 171ff550d0eSmasputra uint32_t udp_state; /* TPI state */ 172fc80c0dfSnordmark 173bd670b35SErik Nordmark ip_pkt_t udp_recv_ipp; /* Used for IPv4 options received */ 174fc80c0dfSnordmark 175fc80c0dfSnordmark /* Written to only once at the time of opening the endpoint */ 176ff550d0eSmasputra conn_t *udp_connp; 1777c478bd9Sstevel@tonic-gate 178bd670b35SErik Nordmark uint32_t 179bd670b35SErik Nordmark udp_issocket : 1, /* socket mode; sockfs is on top */ 180bd670b35SErik Nordmark udp_nat_t_endpoint : 1, /* UDP_NAT_T_ENDPOINT option */ 181bd670b35SErik Nordmark udp_rcvhdr : 1, /* UDP_RCVHDR option */ 182bd670b35SErik Nordmark 183*3e8b6b84SRobert Mustacchi udp_vxlanhash: 1, /* UDP_SRCPORT_HASH option */ 184*3e8b6b84SRobert Mustacchi /* Because there's only VXLAN, cheat */ 185*3e8b6b84SRobert Mustacchi /* and only use a single bit */ 186*3e8b6b84SRobert Mustacchi 187*3e8b6b84SRobert Mustacchi udp_pad_to_bit_31 : 28; 188fc80c0dfSnordmark 189fc80c0dfSnordmark /* Following 2 fields protected by the uf_lock */ 1907c478bd9Sstevel@tonic-gate struct udp_s *udp_bind_hash; /* Bind hash chain */ 1917c478bd9Sstevel@tonic-gate struct udp_s **udp_ptpbhn; /* Pointer to previous bind hash next. */ 192ff550d0eSmasputra 1930f1702c5SYu Xiangning kmutex_t udp_recv_lock; /* recv lock */ 1940f1702c5SYu Xiangning size_t udp_rcv_disply_hiwat; /* user's view of rcvbuf */ 195ff550d0eSmasputra size_t udp_rcv_hiwat; /* receive high watermark */ 196bd670b35SErik Nordmark 197bd670b35SErik Nordmark /* Set at open time and never changed */ 198f4b3ec61Sdh udp_stack_t *udp_us; /* Stack instance for zone */ 199bd670b35SErik Nordmark 2000f1702c5SYu Xiangning int udp_delayed_error; 2010f1702c5SYu Xiangning mblk_t *udp_fallback_queue_head; 2020f1702c5SYu Xiangning mblk_t *udp_fallback_queue_tail; 2030f1702c5SYu Xiangning struct sockaddr_storage udp_delayed_addr; 2047c478bd9Sstevel@tonic-gate } udp_t; 2057c478bd9Sstevel@tonic-gate 2067c478bd9Sstevel@tonic-gate /* UDP Protocol header aligned */ 2077c478bd9Sstevel@tonic-gate typedef struct udpahdr_s { 2087c478bd9Sstevel@tonic-gate in_port_t uha_src_port; /* Source port */ 2097c478bd9Sstevel@tonic-gate in_port_t uha_dst_port; /* Destination port */ 2107c478bd9Sstevel@tonic-gate uint16_t uha_length; /* UDP length */ 2117c478bd9Sstevel@tonic-gate uint16_t uha_checksum; /* UDP checksum */ 2127c478bd9Sstevel@tonic-gate } udpha_t; 2137c478bd9Sstevel@tonic-gate 2146e91bba0SGirish Moodalbail #define us_wroff_extra us_propinfo_tbl[0].prop_cur_uval 2156e91bba0SGirish Moodalbail #define us_ipv4_ttl us_propinfo_tbl[1].prop_cur_uval 2166e91bba0SGirish Moodalbail #define us_ipv6_hoplimit us_propinfo_tbl[2].prop_cur_uval 2176e91bba0SGirish Moodalbail #define us_smallest_nonpriv_port us_propinfo_tbl[3].prop_cur_uval 2186e91bba0SGirish Moodalbail #define us_do_checksum us_propinfo_tbl[4].prop_cur_bval 2196e91bba0SGirish Moodalbail #define us_smallest_anon_port us_propinfo_tbl[5].prop_cur_uval 2206e91bba0SGirish Moodalbail #define us_largest_anon_port us_propinfo_tbl[6].prop_cur_uval 2216e91bba0SGirish Moodalbail #define us_xmit_hiwat us_propinfo_tbl[7].prop_cur_uval 2226e91bba0SGirish Moodalbail #define us_xmit_lowat us_propinfo_tbl[8].prop_cur_uval 2236e91bba0SGirish Moodalbail #define us_recv_hiwat us_propinfo_tbl[9].prop_cur_uval 2246e91bba0SGirish Moodalbail #define us_max_buf us_propinfo_tbl[10].prop_cur_uval 2256e91bba0SGirish Moodalbail #define us_pmtu_discovery us_propinfo_tbl[11].prop_cur_bval 2266e91bba0SGirish Moodalbail #define us_sendto_ignerr us_propinfo_tbl[12].prop_cur_bval 227ff550d0eSmasputra 2285dd46ab5SKacheong Poon #define UDPS_BUMP_MIB(us, x) \ 2295dd46ab5SKacheong Poon BUMP_MIB(&(us)->us_sc[CPU->cpu_seqid]->udp_sc_mib, x) 2305dd46ab5SKacheong Poon 2315dd46ab5SKacheong Poon #define UDP_STAT(us, x) ((us)->us_sc[CPU->cpu_seqid]->udp_sc_stats.x++) 232f4b3ec61Sdh #define UDP_STAT_UPDATE(us, x, n) \ 2335dd46ab5SKacheong Poon ((us)->us->sc[CPU->cpu_seqid]->udp_sc_stats.x.value.ui64 += (n)) 234ff550d0eSmasputra #ifdef DEBUG 235f4b3ec61Sdh #define UDP_DBGSTAT(us, x) UDP_STAT(us, x) 236ff550d0eSmasputra #else 237f4b3ec61Sdh #define UDP_DBGSTAT(us, x) 238ff550d0eSmasputra #endif /* DEBUG */ 239ff550d0eSmasputra 240ff550d0eSmasputra extern int udp_opt_default(queue_t *, t_scalar_t, t_scalar_t, uchar_t *); 2410f1702c5SYu Xiangning extern int udp_tpi_opt_get(queue_t *, t_scalar_t, t_scalar_t, uchar_t *); 2420f1702c5SYu Xiangning extern int udp_tpi_opt_set(queue_t *, uint_t, int, int, uint_t, uchar_t *, 243bd670b35SErik Nordmark uint_t *, uchar_t *, void *, cred_t *); 2446f773e29SBaban Kenkre extern mblk_t *udp_snmp_get(queue_t *, mblk_t *, boolean_t); 245ff550d0eSmasputra extern int udp_snmp_set(queue_t *, t_scalar_t, t_scalar_t, uchar_t *, int); 2460f1702c5SYu Xiangning extern void udp_ddi_g_init(void); 2470f1702c5SYu Xiangning extern void udp_ddi_g_destroy(void); 2480f1702c5SYu Xiangning extern void udp_output(conn_t *connp, mblk_t *mp, struct sockaddr *addr, 2490f1702c5SYu Xiangning socklen_t addrlen); 2508a06b3d6SToomas Soome extern int udp_wput(queue_t *, mblk_t *); 25145916cd2Sjpk 2525dd46ab5SKacheong Poon extern void *udp_kstat_init(netstackid_t stackid); 2535dd46ab5SKacheong Poon extern void udp_kstat_fini(netstackid_t stackid, kstat_t *ksp); 2545dd46ab5SKacheong Poon extern void *udp_kstat2_init(netstackid_t stackid); 2555dd46ab5SKacheong Poon extern void udp_kstat2_fini(netstackid_t, kstat_t *); 2565dd46ab5SKacheong Poon 2575dd46ab5SKacheong Poon extern void udp_stack_cpu_add(udp_stack_t *, processorid_t); 2585dd46ab5SKacheong Poon 25945916cd2Sjpk /* 26045916cd2Sjpk * Object to represent database of options to search passed to 26145916cd2Sjpk * {sock,tpi}optcom_req() interface routine to take care of option 26245916cd2Sjpk * management and associated methods. 26345916cd2Sjpk */ 26445916cd2Sjpk extern optdb_obj_t udp_opt_obj; 26545916cd2Sjpk extern uint_t udp_max_optsize; 26645916cd2Sjpk 2670f1702c5SYu Xiangning extern sock_lower_handle_t udp_create(int, int, int, sock_downcalls_t **, 2680f1702c5SYu Xiangning uint_t *, int *, int, cred_t *); 26941174437SAnders Persson extern int udp_fallback(sock_lower_handle_t, queue_t *, boolean_t, 2703e95bd4aSAnders Persson so_proto_quiesced_cb_t, sock_quiesce_arg_t *); 2710f1702c5SYu Xiangning 2720f1702c5SYu Xiangning extern sock_downcalls_t sock_udp_downcalls; 2730f1702c5SYu Xiangning 2747c478bd9Sstevel@tonic-gate #endif /* _KERNEL */ 2757c478bd9Sstevel@tonic-gate 2767c478bd9Sstevel@tonic-gate #ifdef __cplusplus 2777c478bd9Sstevel@tonic-gate } 2787c478bd9Sstevel@tonic-gate #endif 2797c478bd9Sstevel@tonic-gate 2807c478bd9Sstevel@tonic-gate #endif /* _UDP_IMPL_H */ 281