Introducing the lock to avoid affecting the applications which
are not using timestamping bpf feature.
Signed-off-by: Jason Xing <kerneljasonxing@xxxxxxxxx>
---
net/ipv4/tcp.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index b2f1fd216df1..a2ac57543b6d 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -493,7 +493,8 @@ static void tcp_tx_timestamp(struct sock *sk, struct sockcm_cookie *sockc)
shinfo->tskey = TCP_SKB_CB(skb)->seq + skb->len - 1;
}
- if (SK_BPF_CB_FLAG_TEST(sk, SK_BPF_CB_TX_TIMESTAMPING) && skb) {
+ if (cgroup_bpf_enabled(CGROUP_SOCK_OPS) &&
+ SK_BPF_CB_FLAG_TEST(sk, SK_BPF_CB_TX_TIMESTAMPING) && skb) {
struct skb_shared_info *shinfo = skb_shinfo(skb);
struct tcp_skb_cb *tcb = TCP_SKB_CB(skb);
--
2.43.5
