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bpf: Add bpf_rbtree_{add,remove,first} decls to bpf_experimental.h

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These kfuncs will be used by selftests in following patches

Signed-off-by: Dave Marchevsky <davemarchevsky@fb.com>
Link: https://lore.kernel.org/r/20230214004017.2534011-7-davemarchevsky@fb.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Dave Marchevsky 2023-02-13 16:40:15 -08:00 committed by Alexei Starovoitov
parent a40d363243
commit c834df847e
1 changed files with 24 additions and 0 deletions
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24
tools/testing/selftests/bpf/bpf_experimental.h
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@ -65,4 +65,28 @@ extern struct bpf_list_node *bpf_list_pop_front(struct bpf_list_head *head) __ks
*/
extern struct bpf_list_node *bpf_list_pop_back(struct bpf_list_head *head) __ksym;
/* Description
* Remove 'node' from rbtree with root 'root'
* Returns
* Pointer to the removed node, or NULL if 'root' didn't contain 'node'
*/
extern struct bpf_rb_node *bpf_rbtree_remove(struct bpf_rb_root *root,
struct bpf_rb_node *node) __ksym;
/* Description
* Add 'node' to rbtree with root 'root' using comparator 'less'
* Returns
* Nothing
*/
extern void bpf_rbtree_add(struct bpf_rb_root *root, struct bpf_rb_node *node,
bool (less)(struct bpf_rb_node *a, const struct bpf_rb_node *b)) __ksym;
/* Description
* Return the first (leftmost) node in input tree
* Returns
* Pointer to the node, which is _not_ removed from the tree. If the tree
* contains no nodes, returns NULL.
*/
extern struct bpf_rb_node *bpf_rbtree_first(struct bpf_rb_root *root) __ksym;
#endif