On Thu, Jan 16, 2025 at 7:05 AM Martin KaFai Lau <martin.lau@xxxxxxxxx> wrote: > > On 1/12/25 3:37 AM, Jason Xing wrote: > > People can follow these three steps as below to fetch the shared info > > from the exported skb in the bpf prog: > > 1. skops_kern = bpf_cast_to_kern_ctx(skops); > > 2. skb = skops_kern->skb; > > 3. shinfo = bpf_core_cast(skb->head + skb->end, struct skb_shared_info); > > > > It's worth to highlight we will be able to fetch the hwstamp, tskey > > and more key information extracted from the skb. > > > > More details can be seen in the last selftest patch of the series. > > > > Signed-off-by: Jason Xing <kerneljasonxing@xxxxxxxxx> > > --- > > net/core/sock.c | 1 + > > 1 file changed, 1 insertion(+) > > > > diff --git a/net/core/sock.c b/net/core/sock.c > > index dbb9326ae9d1..2f54e60a50d4 100644 > > --- a/net/core/sock.c > > +++ b/net/core/sock.c > > @@ -958,6 +958,7 @@ void bpf_skops_tx_timestamping(struct sock *sk, struct sk_buff *skb, int op) > > if (sk_is_tcp(sk) && sk_fullsock(sk)) > > sock_ops.is_fullsock = 1; > > sock_ops.sk = sk; > > + bpf_skops_init_skb(&sock_ops, skb, 0); > > nit. This change can fold into patch 1. I understand what you meant here. You probably refer to patch [02/15]. Thanks, Jason
