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authorStanislav Fomichev <sdf@google.com>2019-08-14 20:37:49 +0300
committerDaniel Borkmann <daniel@iogearbox.net>2019-08-18 00:18:54 +0300
commit8f51dfc73bf181f2304e1498f55d5f452e060cbe (patch)
tree1b3877adff06cd12dbeac725521cef44d2ebf7d7 /net/core/sock.c
parentb0e4701ce15d0381cdea0643c7f0a35dc529cec2 (diff)
downloadlinux-8f51dfc73bf181f2304e1498f55d5f452e060cbe.tar.xz
bpf: support cloning sk storage on accept()
Add new helper bpf_sk_storage_clone which optionally clones sk storage and call it from sk_clone_lock. Cc: Martin KaFai Lau <kafai@fb.com> Cc: Yonghong Song <yhs@fb.com> Acked-by: Martin KaFai Lau <kafai@fb.com> Acked-by: Yonghong Song <yhs@fb.com> Signed-off-by: Stanislav Fomichev <sdf@google.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Diffstat (limited to 'net/core/sock.c')
-rw-r--r--net/core/sock.c9
1 files changed, 6 insertions, 3 deletions
diff --git a/net/core/sock.c b/net/core/sock.c
index d57b0cc995a0..f5e801a9cea4 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -1851,9 +1851,12 @@ struct sock *sk_clone_lock(const struct sock *sk, const gfp_t priority)
goto out;
}
RCU_INIT_POINTER(newsk->sk_reuseport_cb, NULL);
-#ifdef CONFIG_BPF_SYSCALL
- RCU_INIT_POINTER(newsk->sk_bpf_storage, NULL);
-#endif
+
+ if (bpf_sk_storage_clone(sk, newsk)) {
+ sk_free_unlock_clone(newsk);
+ newsk = NULL;
+ goto out;
+ }
newsk->sk_err = 0;
newsk->sk_err_soft = 0;