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6054c1ebf7
For all files in iproute2 which do not have an obvious license identification, mark them with SPDK GPL-2 Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
130 lines
3.2 KiB
C
130 lines
3.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __LIST_H__
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#define __LIST_H__ 1
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/* List and hash list stuff from kernel */
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#include <stddef.h>
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#define container_of(ptr, type, member) ({ \
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const typeof( ((type *)0)->member ) *__mptr = (ptr); \
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(type *)( (char *)__mptr - offsetof(type,member) );})
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struct list_head {
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struct list_head *next, *prev;
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};
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static inline void INIT_LIST_HEAD(struct list_head *list)
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{
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list->next = list;
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list->prev = list;
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}
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static inline void __list_add(struct list_head *new,
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struct list_head *prev,
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struct list_head *next)
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{
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next->prev = new;
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new->next = next;
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new->prev = prev;
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prev->next = new;
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}
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static inline void list_add(struct list_head *new, struct list_head *head)
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{
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__list_add(new, head, head->next);
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}
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static inline void list_add_tail(struct list_head *new, struct list_head *head)
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{
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__list_add(new, head->prev, head);
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}
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static inline void __list_del(struct list_head *prev, struct list_head *next)
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{
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next->prev = prev;
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prev->next = next;
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}
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static inline void list_del(struct list_head *entry)
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{
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__list_del(entry->prev, entry->next);
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}
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#define list_entry(ptr, type, member) \
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container_of(ptr, type, member)
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#define list_first_entry(ptr, type, member) \
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list_entry((ptr)->next, type, member)
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#define list_last_entry(ptr, type, member) \
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list_entry((ptr)->prev, type, member)
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#define list_next_entry(pos, member) \
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list_entry((pos)->member.next, typeof(*(pos)), member)
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#define list_prev_entry(pos, member) \
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list_entry((pos)->member.prev, typeof(*(pos)), member)
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#define list_for_each_entry(pos, head, member) \
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for (pos = list_first_entry(head, typeof(*pos), member); \
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&pos->member != (head); \
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pos = list_next_entry(pos, member))
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#define list_for_each_entry_safe(pos, n, head, member) \
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for (pos = list_first_entry(head, typeof(*pos), member), \
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n = list_next_entry(pos, member); \
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&pos->member != (head); \
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pos = n, n = list_next_entry(n, member))
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#define list_for_each_entry_reverse(pos, head, member) \
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for (pos = list_last_entry(head, typeof(*pos), member); \
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&pos->member != (head); \
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pos = list_prev_entry(pos, member))
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struct hlist_head {
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struct hlist_node *first;
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};
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struct hlist_node {
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struct hlist_node *next, **pprev;
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};
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static inline void hlist_del(struct hlist_node *n)
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{
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struct hlist_node *next = n->next;
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struct hlist_node **pprev = n->pprev;
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*pprev = next;
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if (next)
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next->pprev = pprev;
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}
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static inline void hlist_add_head(struct hlist_node *n, struct hlist_head *h)
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{
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struct hlist_node *first = h->first;
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n->next = first;
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if (first)
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first->pprev = &n->next;
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h->first = n;
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n->pprev = &h->first;
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}
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#define hlist_for_each(pos, head) \
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for (pos = (head)->first; pos ; pos = pos->next)
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#define hlist_for_each_safe(pos, n, head) \
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for (pos = (head)->first; pos && ({ n = pos->next; 1; }); \
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pos = n)
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#define hlist_entry_safe(ptr, type, member) \
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({ typeof(ptr) ____ptr = (ptr); \
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____ptr ? hlist_entry(____ptr, type, member) : NULL; \
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})
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#define hlist_for_each_entry(pos, head, member) \
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for (pos = hlist_entry_safe((head)->first, typeof(*(pos)), member);\
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pos; \
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pos = hlist_entry_safe((pos)->member.next, typeof(*(pos)), member))
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#endif /* __LIST_H__ */
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