| Message ID | 20220328175033.2437312-2-roberto.sassu@huawei.com (mailing list archive) |
|---|---|
| State | Changes Requested |
| Delegated to: | BPF |
| Headers | show |
| Series | bpf: Secure and authenticated preloading of eBPF programs | expand |
| Context | Check | Description |
|---|---|---|
| bpf/vmtest-bpf-next-PR | fail | PR summary |
| netdev/tree_selection | success | Guessing tree name failed - patch did not apply, async |
diff --git a/kernel/bpf/syscall.c b/kernel/bpf/syscall.c index cdaa1152436a..8ffe342545c3 100644 --- a/kernel/bpf/syscall.c +++ b/kernel/bpf/syscall.c @@ -2459,6 +2459,7 @@ void bpf_link_inc(struct bpf_link *link) { atomic64_inc(&link->refcnt); } +EXPORT_SYMBOL_GPL(bpf_link_inc); /* bpf_link_free is guaranteed to be called from process context */ static void bpf_link_free(struct bpf_link *link)
In the upcoming patches, populate_bpffs() will not have visibility anymore on the links and maps to be pinned (to avoid the limitation of the 'objs' fixed-size array), but the eBPF-program-specific preload method will directly do the pinning and increase/decrease the reference count. Since the preload method can be implemented in a kernel module, also bpf_link_inc(), before called by populate_bpffs(), should be exported. Thus, export bpf_link_inc(). Signed-off-by: Roberto Sassu <roberto.sassu@huawei.com> --- kernel/bpf/syscall.c | 1 + 1 file changed, 1 insertion(+)