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[bpf-next,v2,2/7] bpf: export bpf_link functions for modules

Message ID 20210604063116.234316-3-memxor@gmail.com
State New
Headers show
Series Add bpf_link based TC-BPF API | expand

Commit Message

Kumar Kartikeya Dwivedi June 4, 2021, 6:31 a.m. UTC 
These are required in a subsequent patch to implement the bpf_link
command for cls_bpf. Since the bpf_link object is tied to the
cls_bpf_prog object, it has to be initialized and managed from inside
the module.

Reviewed-by: Toke Høiland-Jørgensen <toke@redhat.com>.
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
---
 kernel/bpf/syscall.c | 4 ++++
 1 file changed, 4 insertions(+)
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Patch

diff --git a/kernel/bpf/syscall.c b/kernel/bpf/syscall.c
index 50457019da27..e5934b748ced 100644
--- a/kernel/bpf/syscall.c
+++ b/kernel/bpf/syscall.c
@@ -2338,6 +2338,7 @@  void bpf_link_init(struct bpf_link *link, enum bpf_link_type type,
 	link->ops = ops;
 	link->prog = prog;
 }
+EXPORT_SYMBOL_GPL(bpf_link_init);
 
 static void bpf_link_free_id(int id)
 {
@@ -2363,6 +2364,7 @@  void bpf_link_cleanup(struct bpf_link_primer *primer)
 	fput(primer->file);
 	put_unused_fd(primer->fd);
 }
+EXPORT_SYMBOL_GPL(bpf_link_cleanup);
 
 void bpf_link_inc(struct bpf_link *link)
 {
@@ -2510,6 +2512,7 @@  int bpf_link_prime(struct bpf_link *link, struct bpf_link_primer *primer)
 	primer->id = id;
 	return 0;
 }
+EXPORT_SYMBOL_GPL(bpf_link_prime);
 
 int bpf_link_settle(struct bpf_link_primer *primer)
 {
@@ -2522,6 +2525,7 @@  int bpf_link_settle(struct bpf_link_primer *primer)
 	/* pass through installed FD */
 	return primer->fd;
 }
+EXPORT_SYMBOL_GPL(bpf_link_settle);
 
 int bpf_link_new_fd(struct bpf_link *link)
 {