1f4b3ec61Sdh155122 /* 2f4b3ec61Sdh155122 * CDDL HEADER START 3f4b3ec61Sdh155122 * 4f4b3ec61Sdh155122 * The contents of this file are subject to the terms of the 5f4b3ec61Sdh155122 * Common Development and Distribution License (the "License"). 6f4b3ec61Sdh155122 * You may not use this file except in compliance with the License. 7f4b3ec61Sdh155122 * 8f4b3ec61Sdh155122 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9f4b3ec61Sdh155122 * or http://www.opensolaris.org/os/licensing. 10f4b3ec61Sdh155122 * See the License for the specific language governing permissions 11f4b3ec61Sdh155122 * and limitations under the License. 12f4b3ec61Sdh155122 * 13f4b3ec61Sdh155122 * When distributing Covered Code, include this CDDL HEADER in each 14f4b3ec61Sdh155122 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15f4b3ec61Sdh155122 * If applicable, add the following below this CDDL HEADER, with the 16f4b3ec61Sdh155122 * fields enclosed by brackets "[]" replaced with your own identifying 17f4b3ec61Sdh155122 * information: Portions Copyright [yyyy] [name of copyright owner] 18f4b3ec61Sdh155122 * 19f4b3ec61Sdh155122 * CDDL HEADER END 20f4b3ec61Sdh155122 */ 21f4b3ec61Sdh155122 22f4b3ec61Sdh155122 /* 23bd41d0a8Snordmark * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 24f4b3ec61Sdh155122 * Use is subject to license terms. 25f4b3ec61Sdh155122 */ 26f4b3ec61Sdh155122 #ifndef _SYS_NETSTACK_H 27f4b3ec61Sdh155122 #define _SYS_NETSTACK_H 28f4b3ec61Sdh155122 29f4b3ec61Sdh155122 #include <sys/kstat.h> 30f4b3ec61Sdh155122 31f4b3ec61Sdh155122 #ifdef __cplusplus 32f4b3ec61Sdh155122 extern "C" { 33f4b3ec61Sdh155122 #endif 34f4b3ec61Sdh155122 35f4b3ec61Sdh155122 /* 36f4b3ec61Sdh155122 * This allows various pieces in and around IP to have a separate instance 37f4b3ec61Sdh155122 * for each instance of IP. This is used to support zones that have an 38f4b3ec61Sdh155122 * exclusive stack. 39f4b3ec61Sdh155122 * Pieces of software far removed from IP (e.g., kernel software 40f4b3ec61Sdh155122 * sitting on top of TCP or UDP) probably should not use the netstack 41f4b3ec61Sdh155122 * support; if such software wants to support separate zones it 42f4b3ec61Sdh155122 * can do that using the zones framework (zone_key_create() etc) 43f4b3ec61Sdh155122 * whether there is a shared IP stack or and exclusive IP stack underneath. 44f4b3ec61Sdh155122 */ 45f4b3ec61Sdh155122 46f4b3ec61Sdh155122 /* 47f4b3ec61Sdh155122 * Each netstack has an identifier. We reuse the zoneid allocation for 48f4b3ec61Sdh155122 * this but have a separate typedef. Thus the shared stack (used by 49f4b3ec61Sdh155122 * the global zone and other shared stack zones) have a zero ID, and 50f4b3ec61Sdh155122 * the exclusive stacks have a netstackid that is the same as their zoneid. 51f4b3ec61Sdh155122 */ 52f4b3ec61Sdh155122 typedef id_t netstackid_t; 53f4b3ec61Sdh155122 54f4b3ec61Sdh155122 #define GLOBAL_NETSTACKID 0 55f4b3ec61Sdh155122 56f4b3ec61Sdh155122 /* 57f4b3ec61Sdh155122 * One for each module which uses netstack support. 58f4b3ec61Sdh155122 * Used in netstack_register(). 59f4b3ec61Sdh155122 * 60f4b3ec61Sdh155122 * The order of these is important for some modules both for 61f4b3ec61Sdh155122 * the creation (which done in ascending order) and destruction (which is 62f4b3ec61Sdh155122 * done ine in decending order). 63f4b3ec61Sdh155122 */ 6423f4867fSnordmark #define NS_ALL -1 /* Match all */ 657ddc9b1aSDarren Reed #define NS_STR 0 /* autopush list etc */ 667ddc9b1aSDarren Reed #define NS_HOOK 1 677ddc9b1aSDarren Reed #define NS_NETI 2 687ddc9b1aSDarren Reed #define NS_ARP 3 697ddc9b1aSDarren Reed #define NS_IP 4 707ddc9b1aSDarren Reed #define NS_ICMP 5 717ddc9b1aSDarren Reed #define NS_UDP 6 727ddc9b1aSDarren Reed #define NS_TCP 7 737ddc9b1aSDarren Reed #define NS_SCTP 8 747ddc9b1aSDarren Reed #define NS_RTS 9 757ddc9b1aSDarren Reed #define NS_IPSEC 10 767ddc9b1aSDarren Reed #define NS_KEYSOCK 11 777ddc9b1aSDarren Reed #define NS_SPDSOCK 12 787ddc9b1aSDarren Reed #define NS_IPSECAH 13 797ddc9b1aSDarren Reed #define NS_IPSECESP 14 807ddc9b1aSDarren Reed #define NS_TUN 15 81*b127ac41SPhilip Kirk #define NS_IPNET 16 82*b127ac41SPhilip Kirk #define NS_MAX (NS_IPNET+1) 83f4b3ec61Sdh155122 84f4b3ec61Sdh155122 /* 85bd41d0a8Snordmark * State maintained for each module which tracks the state of 86bd41d0a8Snordmark * the create, shutdown and destroy callbacks. 87bd41d0a8Snordmark * 88bd41d0a8Snordmark * Keeps track of pending actions to avoid holding locks when 89bd41d0a8Snordmark * calling into the create/shutdown/destroy functions in the module. 90bd41d0a8Snordmark */ 91bd41d0a8Snordmark #ifdef _KERNEL 92bd41d0a8Snordmark typedef struct { 93bd41d0a8Snordmark uint16_t nms_flags; 94bd41d0a8Snordmark kcondvar_t nms_cv; 95bd41d0a8Snordmark } nm_state_t; 96bd41d0a8Snordmark 97bd41d0a8Snordmark /* 98bd41d0a8Snordmark * nms_flags 99bd41d0a8Snordmark */ 100bd41d0a8Snordmark #define NSS_CREATE_NEEDED 0x0001 101bd41d0a8Snordmark #define NSS_CREATE_INPROGRESS 0x0002 102bd41d0a8Snordmark #define NSS_CREATE_COMPLETED 0x0004 103bd41d0a8Snordmark #define NSS_SHUTDOWN_NEEDED 0x0010 104bd41d0a8Snordmark #define NSS_SHUTDOWN_INPROGRESS 0x0020 105bd41d0a8Snordmark #define NSS_SHUTDOWN_COMPLETED 0x0040 106bd41d0a8Snordmark #define NSS_DESTROY_NEEDED 0x0100 107bd41d0a8Snordmark #define NSS_DESTROY_INPROGRESS 0x0200 108bd41d0a8Snordmark #define NSS_DESTROY_COMPLETED 0x0400 109bd41d0a8Snordmark 110bd41d0a8Snordmark #define NSS_CREATE_ALL \ 111bd41d0a8Snordmark (NSS_CREATE_NEEDED|NSS_CREATE_INPROGRESS|NSS_CREATE_COMPLETED) 112bd41d0a8Snordmark #define NSS_SHUTDOWN_ALL \ 113bd41d0a8Snordmark (NSS_SHUTDOWN_NEEDED|NSS_SHUTDOWN_INPROGRESS|NSS_SHUTDOWN_COMPLETED) 114bd41d0a8Snordmark #define NSS_DESTROY_ALL \ 115bd41d0a8Snordmark (NSS_DESTROY_NEEDED|NSS_DESTROY_INPROGRESS|NSS_DESTROY_COMPLETED) 116bd41d0a8Snordmark 117bd41d0a8Snordmark #define NSS_ALL_INPROGRESS \ 118bd41d0a8Snordmark (NSS_CREATE_INPROGRESS|NSS_SHUTDOWN_INPROGRESS|NSS_DESTROY_INPROGRESS) 119bd41d0a8Snordmark #else 120bd41d0a8Snordmark /* User-level compile like IP Filter needs a netstack_t. Dummy */ 121bd41d0a8Snordmark typedef uint_t nm_state_t; 122bd41d0a8Snordmark #endif /* _KERNEL */ 123bd41d0a8Snordmark 124bd41d0a8Snordmark /* 125f4b3ec61Sdh155122 * One for every netstack in the system. 126f4b3ec61Sdh155122 * We use a union so that the compilar and lint can provide type checking - 127f4b3ec61Sdh155122 * in principle we could have 128f4b3ec61Sdh155122 * #define netstack_arp netstack_modules[NS_ARP] 129f4b3ec61Sdh155122 * etc, but that would imply void * types hence no type checking by the 130f4b3ec61Sdh155122 * compiler. 131f4b3ec61Sdh155122 * 132f4b3ec61Sdh155122 * All the fields in netstack_t except netstack_next are protected by 133f4b3ec61Sdh155122 * netstack_lock. netstack_next is protected by netstack_g_lock. 134f4b3ec61Sdh155122 */ 135f4b3ec61Sdh155122 struct netstack { 136f4b3ec61Sdh155122 union { 137f4b3ec61Sdh155122 void *nu_modules[NS_MAX]; 138f4b3ec61Sdh155122 struct { 1397ddc9b1aSDarren Reed struct str_stack *nu_str; 140f4b3ec61Sdh155122 struct hook_stack *nu_hook; 141f4b3ec61Sdh155122 struct neti_stack *nu_neti; 142f4b3ec61Sdh155122 struct arp_stack *nu_arp; 143f4b3ec61Sdh155122 struct ip_stack *nu_ip; 144f4b3ec61Sdh155122 struct icmp_stack *nu_icmp; 145f4b3ec61Sdh155122 struct udp_stack *nu_udp; 146f4b3ec61Sdh155122 struct tcp_stack *nu_tcp; 147f4b3ec61Sdh155122 struct sctp_stack *nu_sctp; 148f4b3ec61Sdh155122 struct rts_stack *nu_rts; 149f4b3ec61Sdh155122 struct ipsec_stack *nu_ipsec; 150f4b3ec61Sdh155122 struct keysock_stack *nu_keysock; 151f4b3ec61Sdh155122 struct spd_stack *nu_spdsock; 152f4b3ec61Sdh155122 struct ipsecah_stack *nu_ipsecah; 153f4b3ec61Sdh155122 struct ipsecesp_stack *nu_ipsecesp; 154f4b3ec61Sdh155122 struct tun_stack *nu_tun; 155*b127ac41SPhilip Kirk struct ipnet_stack *nu_ipnet; 156f4b3ec61Sdh155122 } nu_s; 157f4b3ec61Sdh155122 } netstack_u; 158f4b3ec61Sdh155122 #define netstack_modules netstack_u.nu_modules 1597ddc9b1aSDarren Reed #define netstack_str netstack_u.nu_s.nu_str 160f4b3ec61Sdh155122 #define netstack_hook netstack_u.nu_s.nu_hook 161f4b3ec61Sdh155122 #define netstack_neti netstack_u.nu_s.nu_neti 162f4b3ec61Sdh155122 #define netstack_arp netstack_u.nu_s.nu_arp 163f4b3ec61Sdh155122 #define netstack_ip netstack_u.nu_s.nu_ip 164f4b3ec61Sdh155122 #define netstack_icmp netstack_u.nu_s.nu_icmp 165f4b3ec61Sdh155122 #define netstack_udp netstack_u.nu_s.nu_udp 166f4b3ec61Sdh155122 #define netstack_tcp netstack_u.nu_s.nu_tcp 167f4b3ec61Sdh155122 #define netstack_sctp netstack_u.nu_s.nu_sctp 168f4b3ec61Sdh155122 #define netstack_rts netstack_u.nu_s.nu_rts 169f4b3ec61Sdh155122 #define netstack_ipsec netstack_u.nu_s.nu_ipsec 170f4b3ec61Sdh155122 #define netstack_keysock netstack_u.nu_s.nu_keysock 171f4b3ec61Sdh155122 #define netstack_spdsock netstack_u.nu_s.nu_spdsock 172f4b3ec61Sdh155122 #define netstack_ipsecah netstack_u.nu_s.nu_ipsecah 173f4b3ec61Sdh155122 #define netstack_ipsecesp netstack_u.nu_s.nu_ipsecesp 174f4b3ec61Sdh155122 #define netstack_tun netstack_u.nu_s.nu_tun 175*b127ac41SPhilip Kirk #define netstack_ipnet netstack_u.nu_s.nu_ipnet 176f4b3ec61Sdh155122 177bd41d0a8Snordmark nm_state_t netstack_m_state[NS_MAX]; /* module state */ 178f4b3ec61Sdh155122 179f4b3ec61Sdh155122 kmutex_t netstack_lock; 180f4b3ec61Sdh155122 struct netstack *netstack_next; 181f4b3ec61Sdh155122 netstackid_t netstack_stackid; 182f4b3ec61Sdh155122 int netstack_numzones; /* Number of zones using this */ 183f4b3ec61Sdh155122 int netstack_refcnt; /* Number of hold-rele */ 184f4b3ec61Sdh155122 int netstack_flags; /* See below */ 185bd41d0a8Snordmark 186bd41d0a8Snordmark #ifdef _KERNEL 187bd41d0a8Snordmark /* Needed to ensure that we run the callback functions in order */ 188bd41d0a8Snordmark kcondvar_t netstack_cv; 189bd41d0a8Snordmark #endif 190f4b3ec61Sdh155122 }; 191f4b3ec61Sdh155122 typedef struct netstack netstack_t; 192f4b3ec61Sdh155122 193f4b3ec61Sdh155122 /* netstack_flags values */ 194f4b3ec61Sdh155122 #define NSF_UNINIT 0x01 /* Not initialized */ 195f4b3ec61Sdh155122 #define NSF_CLOSING 0x02 /* Going away */ 196bd41d0a8Snordmark #define NSF_ZONE_CREATE 0x04 /* create callbacks inprog */ 197bd41d0a8Snordmark #define NSF_ZONE_SHUTDOWN 0x08 /* shutdown callbacks */ 198bd41d0a8Snordmark #define NSF_ZONE_DESTROY 0x10 /* destroy callbacks */ 199f4b3ec61Sdh155122 200bd41d0a8Snordmark #define NSF_ZONE_INPROGRESS \ 201bd41d0a8Snordmark (NSF_ZONE_CREATE|NSF_ZONE_SHUTDOWN|NSF_ZONE_DESTROY) 202f4b3ec61Sdh155122 203f4b3ec61Sdh155122 /* 204f4b3ec61Sdh155122 * One for each of the NS_* values. 205f4b3ec61Sdh155122 */ 206f4b3ec61Sdh155122 struct netstack_registry { 207f4b3ec61Sdh155122 int nr_flags; /* 0 if nothing registered */ 208f4b3ec61Sdh155122 void *(*nr_create)(netstackid_t, netstack_t *); 209f4b3ec61Sdh155122 void (*nr_shutdown)(netstackid_t, void *); 210f4b3ec61Sdh155122 void (*nr_destroy)(netstackid_t, void *); 211f4b3ec61Sdh155122 }; 212f4b3ec61Sdh155122 213f4b3ec61Sdh155122 /* nr_flags values */ 214f4b3ec61Sdh155122 #define NRF_REGISTERED 0x01 215bd41d0a8Snordmark #define NRF_DYING 0x02 /* No new creates */ 216f4b3ec61Sdh155122 217f4b3ec61Sdh155122 /* 218f4b3ec61Sdh155122 * To support kstat_create_netstack() using kstat_add_zone we need 219f4b3ec61Sdh155122 * to track both 220f4b3ec61Sdh155122 * - all zoneids that use the global/shared stack 221f4b3ec61Sdh155122 * - all kstats that have been added for the shared stack 222f4b3ec61Sdh155122 */ 223f4b3ec61Sdh155122 224f4b3ec61Sdh155122 extern void netstack_init(void); 225f4b3ec61Sdh155122 extern void netstack_hold(netstack_t *); 226f4b3ec61Sdh155122 extern void netstack_rele(netstack_t *); 227f4b3ec61Sdh155122 extern netstack_t *netstack_find_by_cred(const cred_t *); 228f4b3ec61Sdh155122 extern netstack_t *netstack_find_by_stackid(netstackid_t); 229f4b3ec61Sdh155122 extern netstack_t *netstack_find_by_zoneid(zoneid_t); 230f4b3ec61Sdh155122 231f4b3ec61Sdh155122 extern zoneid_t netstackid_to_zoneid(netstackid_t); 232f4b3ec61Sdh155122 extern netstackid_t zoneid_to_netstackid(zoneid_t); 233f4b3ec61Sdh155122 234fd006805Snordmark extern netstack_t *netstack_get_current(void); 235fd006805Snordmark 236f4b3ec61Sdh155122 /* 237f4b3ec61Sdh155122 * Register interest in changes to the set of netstacks. 238f4b3ec61Sdh155122 * The createfn and destroyfn are required, but the shutdownfn can be 239f4b3ec61Sdh155122 * NULL. 240f4b3ec61Sdh155122 * Note that due to the current zsd implementation, when the create 241f4b3ec61Sdh155122 * function is called the zone isn't fully present, thus functions 242f4b3ec61Sdh155122 * like zone_find_by_* will fail, hence the create function can not 243f4b3ec61Sdh155122 * use many zones kernel functions including zcmn_err(). 244f4b3ec61Sdh155122 */ 245f4b3ec61Sdh155122 extern void netstack_register(int, 246f4b3ec61Sdh155122 void *(*)(netstackid_t, netstack_t *), 247f4b3ec61Sdh155122 void (*)(netstackid_t, void *), 248f4b3ec61Sdh155122 void (*)(netstackid_t, void *)); 249f4b3ec61Sdh155122 extern void netstack_unregister(int); 250f4b3ec61Sdh155122 extern kstat_t *kstat_create_netstack(char *, int, char *, char *, uchar_t, 251f4b3ec61Sdh155122 uint_t, uchar_t, netstackid_t); 252f4b3ec61Sdh155122 extern void kstat_delete_netstack(kstat_t *, netstackid_t); 253f4b3ec61Sdh155122 254f4b3ec61Sdh155122 /* 255f4b3ec61Sdh155122 * Simple support for walking all the netstacks. 256f4b3ec61Sdh155122 * The caller of netstack_next() needs to call netstack_rele() when 257f4b3ec61Sdh155122 * done with a netstack. 258f4b3ec61Sdh155122 */ 259f4b3ec61Sdh155122 typedef int netstack_handle_t; 260f4b3ec61Sdh155122 261f4b3ec61Sdh155122 extern void netstack_next_init(netstack_handle_t *); 262f4b3ec61Sdh155122 extern void netstack_next_fini(netstack_handle_t *); 263f4b3ec61Sdh155122 extern netstack_t *netstack_next(netstack_handle_t *); 264f4b3ec61Sdh155122 265f4b3ec61Sdh155122 #ifdef __cplusplus 266f4b3ec61Sdh155122 } 267f4b3ec61Sdh155122 #endif 268f4b3ec61Sdh155122 269f4b3ec61Sdh155122 270f4b3ec61Sdh155122 #endif /* _SYS_NETSTACK_H */ 271