list.h revision 255932
1219820Sjeff/*- 2219820Sjeff * Copyright (c) 2010 Isilon Systems, Inc. 3219820Sjeff * Copyright (c) 2010 iX Systems, Inc. 4219820Sjeff * Copyright (c) 2010 Panasas, Inc. 5219820Sjeff * All rights reserved. 6219820Sjeff * 7219820Sjeff * Redistribution and use in source and binary forms, with or without 8219820Sjeff * modification, are permitted provided that the following conditions 9219820Sjeff * are met: 10219820Sjeff * 1. Redistributions of source code must retain the above copyright 11219820Sjeff * notice unmodified, this list of conditions, and the following 12219820Sjeff * disclaimer. 13219820Sjeff * 2. Redistributions in binary form must reproduce the above copyright 14219820Sjeff * notice, this list of conditions and the following disclaimer in the 15219820Sjeff * documentation and/or other materials provided with the distribution. 16219820Sjeff * 17219820Sjeff * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18219820Sjeff * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19219820Sjeff * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20219820Sjeff * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21219820Sjeff * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22219820Sjeff * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23219820Sjeff * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24219820Sjeff * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25219820Sjeff * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26219820Sjeff * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27219820Sjeff */ 28219820Sjeff#ifndef _LINUX_LIST_H_ 29219820Sjeff#define _LINUX_LIST_H_ 30219820Sjeff 31219820Sjeff/* 32219820Sjeff * Since LIST_HEAD conflicts with the linux definition we must include any 33219820Sjeff * FreeBSD header which requires it here so it is resolved with the correct 34219820Sjeff * definition prior to the undef. 35219820Sjeff */ 36219820Sjeff#include <linux/types.h> 37219820Sjeff 38219820Sjeff#include <sys/param.h> 39219820Sjeff#include <sys/kernel.h> 40219820Sjeff#include <sys/queue.h> 41222813Sattilio#include <sys/cpuset.h> 42219820Sjeff#include <sys/lock.h> 43219820Sjeff#include <sys/mutex.h> 44219820Sjeff#include <sys/proc.h> 45219820Sjeff#include <sys/vnode.h> 46219820Sjeff#include <sys/conf.h> 47219820Sjeff#include <sys/socket.h> 48219820Sjeff#include <sys/mbuf.h> 49219820Sjeff 50219820Sjeff#include <net/bpf.h> 51219820Sjeff#include <net/if.h> 52219820Sjeff#include <net/if_types.h> 53219820Sjeff#include <net/if_media.h> 54219820Sjeff 55219820Sjeff#include <netinet/in.h> 56219820Sjeff#include <netinet/in_pcb.h> 57219820Sjeff 58219820Sjeff#include <netinet6/in6_var.h> 59219820Sjeff#include <netinet6/nd6.h> 60219820Sjeff 61219820Sjeff#include <vm/vm.h> 62219820Sjeff#include <vm/vm_object.h> 63219820Sjeff 64219820Sjeff#define prefetch(x) 65219820Sjeff 66219820Sjeffstruct list_head { 67219820Sjeff struct list_head *next; 68219820Sjeff struct list_head *prev; 69219820Sjeff}; 70219820Sjeff 71219820Sjeffstatic inline void 72219820SjeffINIT_LIST_HEAD(struct list_head *list) 73219820Sjeff{ 74219820Sjeff 75219820Sjeff list->next = list->prev = list; 76219820Sjeff} 77219820Sjeff 78219820Sjeffstatic inline int 79219820Sjefflist_empty(const struct list_head *head) 80219820Sjeff{ 81219820Sjeff 82219820Sjeff return (head->next == head); 83219820Sjeff} 84219820Sjeff 85219820Sjeffstatic inline void 86219820Sjefflist_del(struct list_head *entry) 87219820Sjeff{ 88219820Sjeff 89219820Sjeff entry->next->prev = entry->prev; 90219820Sjeff entry->prev->next = entry->next; 91219820Sjeff} 92219820Sjeff 93219820Sjeffstatic inline void 94219820Sjeff_list_add(struct list_head *new, struct list_head *prev, 95219820Sjeff struct list_head *next) 96219820Sjeff{ 97219820Sjeff 98219820Sjeff next->prev = new; 99219820Sjeff new->next = next; 100219820Sjeff new->prev = prev; 101219820Sjeff prev->next = new; 102219820Sjeff} 103219820Sjeff 104219820Sjeffstatic inline void 105219820Sjefflist_del_init(struct list_head *entry) 106219820Sjeff{ 107219820Sjeff 108219820Sjeff list_del(entry); 109219820Sjeff INIT_LIST_HEAD(entry); 110219820Sjeff} 111219820Sjeff 112219820Sjeff#define list_entry(ptr, type, field) container_of(ptr, type, field) 113219820Sjeff 114255932Salfred#define list_first_entry(ptr, type, member) \ 115255932Salfred list_entry((ptr)->next, type, member) 116255932Salfred 117219820Sjeff#define list_for_each(p, head) \ 118219820Sjeff for (p = (head)->next; p != (head); p = p->next) 119219820Sjeff 120219820Sjeff#define list_for_each_safe(p, n, head) \ 121219820Sjeff for (p = (head)->next, n = p->next; p != (head); p = n, n = p->next) 122219820Sjeff 123219820Sjeff#define list_for_each_entry(p, h, field) \ 124219820Sjeff for (p = list_entry((h)->next, typeof(*p), field); &p->field != (h); \ 125219820Sjeff p = list_entry(p->field.next, typeof(*p), field)) 126219820Sjeff 127219820Sjeff#define list_for_each_entry_safe(p, n, h, field) \ 128219820Sjeff for (p = list_entry((h)->next, typeof(*p), field), \ 129219820Sjeff n = list_entry(p->field.next, typeof(*p), field); &p->field != (h);\ 130219820Sjeff p = n, n = list_entry(n->field.next, typeof(*n), field)) 131219820Sjeff 132219820Sjeff#define list_for_each_entry_reverse(p, h, field) \ 133219820Sjeff for (p = list_entry((h)->prev, typeof(*p), field); &p->field != (h); \ 134219820Sjeff p = list_entry(p->field.prev, typeof(*p), field)) 135219820Sjeff 136219820Sjeff#define list_for_each_prev(p, h) for (p = (h)->prev; p != (h); p = p->prev) 137219820Sjeff 138219820Sjeffstatic inline void 139219820Sjefflist_add(struct list_head *new, struct list_head *head) 140219820Sjeff{ 141219820Sjeff 142219820Sjeff _list_add(new, head, head->next); 143219820Sjeff} 144219820Sjeff 145219820Sjeffstatic inline void 146219820Sjefflist_add_tail(struct list_head *new, struct list_head *head) 147219820Sjeff{ 148219820Sjeff 149219820Sjeff _list_add(new, head->prev, head); 150219820Sjeff} 151219820Sjeff 152219820Sjeffstatic inline void 153219820Sjefflist_move(struct list_head *list, struct list_head *head) 154219820Sjeff{ 155219820Sjeff 156219820Sjeff list_del(list); 157219820Sjeff list_add(list, head); 158219820Sjeff} 159219820Sjeff 160219820Sjeffstatic inline void 161219820Sjefflist_move_tail(struct list_head *entry, struct list_head *head) 162219820Sjeff{ 163219820Sjeff 164219820Sjeff list_del(entry); 165219820Sjeff list_add_tail(entry, head); 166219820Sjeff} 167219820Sjeff 168219820Sjeffstatic inline void 169219820Sjeff_list_splice(const struct list_head *list, struct list_head *prev, 170219820Sjeff struct list_head *next) 171219820Sjeff{ 172219820Sjeff struct list_head *first; 173219820Sjeff struct list_head *last; 174219820Sjeff 175219820Sjeff if (list_empty(list)) 176219820Sjeff return; 177219820Sjeff first = list->next; 178219820Sjeff last = list->prev; 179219820Sjeff first->prev = prev; 180219820Sjeff prev->next = first; 181219820Sjeff last->next = next; 182219820Sjeff next->prev = last; 183219820Sjeff} 184219820Sjeff 185219820Sjeffstatic inline void 186219820Sjefflist_splice(const struct list_head *list, struct list_head *head) 187219820Sjeff{ 188219820Sjeff 189219820Sjeff _list_splice(list, head, head->next); 190219820Sjeff} 191219820Sjeff 192219820Sjeffstatic inline void 193219820Sjefflist_splice_tail(struct list_head *list, struct list_head *head) 194219820Sjeff{ 195219820Sjeff 196219820Sjeff _list_splice(list, head->prev, head); 197219820Sjeff} 198219820Sjeff 199219820Sjeffstatic inline void 200219820Sjefflist_splice_init(struct list_head *list, struct list_head *head) 201219820Sjeff{ 202219820Sjeff 203219820Sjeff _list_splice(list, head, head->next); 204219820Sjeff INIT_LIST_HEAD(list); 205219820Sjeff} 206219820Sjeff 207219820Sjeffstatic inline void 208219820Sjefflist_splice_tail_init(struct list_head *list, struct list_head *head) 209219820Sjeff{ 210219820Sjeff 211219820Sjeff _list_splice(list, head->prev, head); 212219820Sjeff INIT_LIST_HEAD(list); 213219820Sjeff} 214219820Sjeff 215219820Sjeff#undef LIST_HEAD 216219820Sjeff#define LIST_HEAD(name) struct list_head name = { &(name), &(name) } 217219820Sjeff 218219820Sjeff 219219820Sjeffstruct hlist_head { 220219820Sjeff struct hlist_node *first; 221219820Sjeff}; 222219820Sjeff 223219820Sjeffstruct hlist_node { 224219820Sjeff struct hlist_node *next, **pprev; 225219820Sjeff}; 226219820Sjeff 227219820Sjeff#define HLIST_HEAD_INIT { } 228219820Sjeff#define HLIST_HEAD(name) struct hlist_head name = HLIST_HEAD_INIT 229219820Sjeff#define INIT_HLIST_HEAD(head) (head)->first = NULL 230219820Sjeff#define INIT_HLIST_NODE(node) \ 231219820Sjeffdo { \ 232219820Sjeff (node)->next = NULL; \ 233219820Sjeff (node)->pprev = NULL; \ 234219820Sjeff} while (0) 235219820Sjeff 236219820Sjeffstatic inline int 237219820Sjeffhlist_unhashed(const struct hlist_node *h) 238219820Sjeff{ 239219820Sjeff 240219820Sjeff return !h->pprev; 241219820Sjeff} 242219820Sjeff 243219820Sjeffstatic inline int 244219820Sjeffhlist_empty(const struct hlist_head *h) 245219820Sjeff{ 246219820Sjeff 247219820Sjeff return !h->first; 248219820Sjeff} 249219820Sjeff 250219820Sjeffstatic inline void 251219820Sjeffhlist_del(struct hlist_node *n) 252219820Sjeff{ 253219820Sjeff 254219820Sjeff if (n->next) 255219820Sjeff n->next->pprev = n->pprev; 256219820Sjeff *n->pprev = n->next; 257219820Sjeff} 258219820Sjeff 259219820Sjeffstatic inline void 260219820Sjeffhlist_del_init(struct hlist_node *n) 261219820Sjeff{ 262219820Sjeff 263219820Sjeff if (hlist_unhashed(n)) 264219820Sjeff return; 265219820Sjeff hlist_del(n); 266219820Sjeff INIT_HLIST_NODE(n); 267219820Sjeff} 268219820Sjeff 269219820Sjeffstatic inline void 270219820Sjeffhlist_add_head(struct hlist_node *n, struct hlist_head *h) 271219820Sjeff{ 272219820Sjeff 273219820Sjeff n->next = h->first; 274219820Sjeff if (h->first) 275219820Sjeff h->first->pprev = &n->next; 276219820Sjeff h->first = n; 277219820Sjeff n->pprev = &h->first; 278219820Sjeff} 279219820Sjeff 280219820Sjeffstatic inline void 281219820Sjeffhlist_add_before(struct hlist_node *n, struct hlist_node *next) 282219820Sjeff{ 283219820Sjeff 284219820Sjeff n->pprev = next->pprev; 285219820Sjeff n->next = next; 286219820Sjeff next->pprev = &n->next; 287219820Sjeff *(n->pprev) = n; 288219820Sjeff} 289219820Sjeff 290219820Sjeffstatic inline void 291219820Sjeffhlist_add_after(struct hlist_node *n, struct hlist_node *next) 292219820Sjeff{ 293219820Sjeff 294219820Sjeff next->next = n->next; 295219820Sjeff n->next = next; 296219820Sjeff next->pprev = &n->next; 297219820Sjeff if (next->next) 298219820Sjeff next->next->pprev = &next->next; 299219820Sjeff} 300219820Sjeff 301219820Sjeffstatic inline void 302219820Sjeffhlist_move_list(struct hlist_head *old, struct hlist_head *new) 303219820Sjeff{ 304219820Sjeff 305219820Sjeff new->first = old->first; 306219820Sjeff if (new->first) 307219820Sjeff new->first->pprev = &new->first; 308219820Sjeff old->first = NULL; 309219820Sjeff} 310219820Sjeff 311219820Sjeff#define hlist_entry(ptr, type, field) container_of(ptr, type, field) 312219820Sjeff 313219820Sjeff#define hlist_for_each(p, head) \ 314219820Sjeff for (p = (head)->first; p; p = p->next) 315219820Sjeff 316219820Sjeff#define hlist_for_each_safe(p, n, head) \ 317219820Sjeff for (p = (head)->first; p && ({ n = p->next; 1; }); p = n) 318219820Sjeff 319219820Sjeff#define hlist_for_each_entry(tp, p, head, field) \ 320219820Sjeff for (p = (head)->first; \ 321219820Sjeff p ? (tp = hlist_entry(p, typeof(*tp), field)): NULL; p = p->next) 322219820Sjeff 323219820Sjeff#define hlist_for_each_entry_continue(tp, p, field) \ 324219820Sjeff for (p = (p)->next; \ 325219820Sjeff p ? (tp = hlist_entry(p, typeof(*tp), field)): NULL; p = p->next) 326219820Sjeff 327219820Sjeff#define hlist_for_each_entry_from(tp, p, field) \ 328219820Sjeff for (; p ? (tp = hlist_entry(p, typeof(*tp), field)): NULL; p = p->next) 329219820Sjeff 330219820Sjeff#define hlist_for_each_entry_safe(tp, p, n, head, field) \ 331219820Sjeff for (p = (head)->first; p ? \ 332219820Sjeff (n = p->next) | (tp = hlist_entry(p, typeof(*tp), field)) : \ 333219820Sjeff NULL; p = n) 334219820Sjeff 335219820Sjeff#endif /* _LINUX_LIST_H_ */ 336