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sync: auto-generate latest BPF helpers

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Latest changes to BPF helper definitions.
This commit is contained in:
Andrii Nakryiko
2021-12-10 11:56:03 -08:00
committed by Andrii Nakryiko
parent a0ddf21c92
commit 1f83414ea4
1 changed files with 28 additions and 0 deletions
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28
src/bpf_helper_defs.h
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@@ -4136,4 +4136,32 @@ static long (*bpf_kallsyms_lookup_name)(const char *name, int name_sz, int flags
*/
static long (*bpf_find_vma)(struct task_struct *task, __u64 addr, void *callback_fn, void *callback_ctx, __u64 flags) = (void *) 180;
/*
* bpf_loop
*
* For **nr_loops**, call **callback_fn** function
* with **callback_ctx** as the context parameter.
* The **callback_fn** should be a static function and
* the **callback_ctx** should be a pointer to the stack.
* The **flags** is used to control certain aspects of the helper.
* Currently, the **flags** must be 0. Currently, nr_loops is
* limited to 1 << 23 (~8 million) loops.
*
* long (\*callback_fn)(u32 index, void \*ctx);
*
* where **index** is the current index in the loop. The index
* is zero-indexed.
*
* If **callback_fn** returns 0, the helper will continue to the next
* loop. If return value is 1, the helper will skip the rest of
* the loops and return. Other return values are not used now,
* and will be rejected by the verifier.
*
*
* Returns
* The number of loops performed, **-EINVAL** for invalid **flags**,
* **-E2BIG** if **nr_loops** exceeds the maximum number of loops.
*/
static long (*bpf_loop)(__u32 nr_loops, void *callback_fn, void *callback_ctx, __u64 flags) = (void *) 181;