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/*
*
* Copyright (c) 2018 Huawei Technologies Co.,Ltd.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef _EPHLIST_H_
#define _EPHLIST_H_
#include <stdio.h>
#include "types.h"
#include "nsfw_mem_api.h"
#ifdef __cplusplus
/* *INDENT-OFF* */
extern "C" {
/* *INDENT-ON* */
#endif
struct ep_hlist_node
{
struct ep_hlist_node *next, **pprev;
};
struct ep_node_list
{
struct ep_hlist_node *head;
struct ep_hlist_node *tail;
};
struct ep_hlist
{
struct ep_hlist_node node;
struct ep_hlist_node *head;
struct ep_hlist_node *tail;
};
#define ep_hlist_entry(ptr, type, member) container_of(ptr, type, member)
#define EP_HLIST_INIT_NODE(node) {\
(node)->next = NULL;\
(node)->pprev = NULL; \
}
#define EP_HLIST_INIT(ptr) {\
EP_HLIST_INIT_NODE(&((ptr)->node)); \
(ptr)->head = (struct ep_hlist_node*)SHMEM_ADDR_LTOSH_EXT(&((ptr)->node)); \
(ptr)->tail = (struct ep_hlist_node*)SHMEM_ADDR_LTOSH_EXT(&((ptr)->node)); \
}
#define EP_HLIST_PREV(ptr) ((struct ep_hlist_node*)(SHMEM_ADDR_SHTOL((ptr)->pprev)))
/* list check may below zero mod Begin
Modifed to check header, because if app crash before do list->size++, it will lead problem */
#define EP_HLIST_EMPTY(list) (NULL == ((struct ep_hlist_node*)SHMEM_ADDR_SHTOL((list)->head))->next)
#define EP_HLIST_NODE_LINKED(node) (!(!(node)->pprev))
static __inline void ep_hlist_del(struct ep_hlist *list,
struct ep_hlist_node *n);
static __inline void ep_hlist_add_tail(struct ep_hlist *list,
struct ep_hlist_node *node);
/*
* list , n are local pointer, don't need to cast
*/
static __inline void ep_hlist_del(struct ep_hlist *list,
struct ep_hlist_node *n)
{
if (!EP_HLIST_NODE_LINKED(n))
return;
EP_HLIST_PREV(n)->next = n->next;
if (n->next)
{
((struct ep_hlist_node *) SHMEM_ADDR_SHTOL(n->next))->pprev =
n->pprev;
}
else
{
list->tail = (struct ep_hlist_node *) (n->pprev);
}
EP_HLIST_INIT_NODE(n);
}
/**
* list, node are local pointer , don't need to case
*/
static __inline void ep_hlist_add_tail(struct ep_hlist *list,
struct ep_hlist_node *node)
{
struct ep_hlist_node *tail =
(struct ep_hlist_node *) SHMEM_ADDR_SHTOL(list->tail);
EP_HLIST_INIT_NODE(node);
node->pprev = (struct ep_hlist_node **) SHMEM_ADDR_LTOSH_EXT(&tail->next);
tail->next = (struct ep_hlist_node *) SHMEM_ADDR_LTOSH_EXT(node);
list->tail = (struct ep_hlist_node *) SHMEM_ADDR_LTOSH_EXT(node);
}
/*#########################################################*/
struct list_node
{
struct list_node *next;
};
struct ep_list
{
struct list_node node;
struct list_node *head;
//struct list_node *tail;
};
#define ep_list_entry(ptr, type, member) container_of(ptr, type, member)
#define EP_LIST_INIT_NODE(node) {\
(node)->next = NULL;\
}
#define EP_LIST_INIT(ptr) {\
EP_LIST_INIT_NODE(&((ptr)->node)); \
(ptr)->head = (struct list_node*)SHMEM_ADDR_LTOSH_EXT(&((ptr)->node)); \
}
#define EP_LIST_EMPTY(list) (NULL == ((struct list_node*)SHMEM_ADDR_SHTOL((list)->head))->next)
static __inline void ep_list_del(struct ep_list *list, struct list_node *n);
static __inline void ep_list_add_tail(struct ep_list *list,
struct list_node *node);
/*
* list , n are local pointer, don't need to cast
*/
static __inline void ep_list_del(struct ep_list *list, struct list_node *n)
{
if (NULL == n || NULL == list)
{
return;
}
struct list_node *p_node;
struct list_node *p_prev = NULL;
p_node = ((struct list_node *) SHMEM_ADDR_SHTOL(list->head));
while (NULL != p_node && p_node != n)
{
p_prev = p_node;
p_node = ((struct list_node *) SHMEM_ADDR_SHTOL(p_node->next));
}
if (p_node != n || p_prev == NULL)
{
return;
}
p_prev->next = n->next;
EP_LIST_INIT_NODE(n);
return;
}
/**
* list, node are local pointer , don't need to case
*/
static __inline void ep_list_add_tail(struct ep_list *list,
struct list_node *node)
{
/*3th round code security review fix, */
if (NULL == list || NULL == node)
{
return;
}
struct list_node *p_node;
struct list_node *p_prev = NULL;
p_node = ((struct list_node *) SHMEM_ADDR_SHTOL(list->head));
while (NULL != p_node)
{
p_prev = p_node;
p_node = ((struct list_node *) SHMEM_ADDR_SHTOL(p_node->next));
}
if (NULL == p_prev)
{
return;
}
EP_LIST_INIT_NODE(node);
p_prev->next = (struct list_node *) SHMEM_ADDR_LTOSH_EXT(node);
return;
}
#ifdef __cplusplus
/* *INDENT-OFF* */
}
/* *INDENT-ON* */
#endif
#endif /* _HLIST_H_ */
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