| Message ID | 20241004191644.1687638-5-edumazet@google.com (mailing list archive) |
|---|---|
| State | Superseded |
| Delegated to: | Netdev Maintainers |
| Headers | show |
| Series | tcp: add skb->sk to more control packets | expand |
diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c index d71ab4e1efe1c6598cf3d3e4334adf0881064ce9..9a15adb8dbcc1e518d43e4e9b563b5bb29ef9430 100644 --- a/net/ipv6/tcp_ipv6.c +++ b/net/ipv6/tcp_ipv6.c @@ -967,6 +967,9 @@ static void tcp_v6_send_response(const struct sock *sk, struct sk_buff *skb, u32 } if (sk) { + /* unconstify the socket only to attach it to buff with care. */ + skb_set_owner_edemux(buff, (struct sock *)sk); + if (sk->sk_state == TCP_TIME_WAIT) mark = inet_twsk(sk)->tw_mark; else
tcp_v6_send_response() send orphaned 'control packets'. These are RST packets and also ACK packets sent from TIME_WAIT. Some eBPF programs would prefer to have a meaningful skb->sk pointer as much as possible. This means that TCP can now attach TIME_WAIT sockets to outgoing skbs. Signed-off-by: Eric Dumazet <edumazet@google.com> --- net/ipv6/tcp_ipv6.c | 3 +++ 1 file changed, 3 insertions(+)