Commit d22b8b04 authored by Jason Xing's avatar Jason Xing Committed by Martin KaFai Lau
Browse files

tcp: bpf: Support bpf_getsockopt for TCP_BPF_DELACK_MAX 



Support bpf_getsockopt if application tries to know what the delayed ack
max time is.

Signed-off-by: default avatarJason Xing <kerneljasonxing@gmail.com>
Signed-off-by: default avatarMartin KaFai Lau <martin.lau@kernel.org>
Link: https://patch.msgid.link/20250312153523.9860-4-kerneljasonxing@gmail.com
parent 5584cd7e

net/core/filter.c

+6 −0
Original line number Diff line number Diff line
@@ -5301,6 +5301,12 @@ static int bpf_sol_tcp_getsockopt(struct sock *sk, int optname, 
		memcpy(optval, &rto_min_us, optlen);

		break;

	}

	case TCP_BPF_DELACK_MAX: {

		int delack_max_us = jiffies_to_usecs(inet_csk(sk)->icsk_delack_max);



		memcpy(optval, &delack_max_us, optlen);

		break;

	}

	default:

		return -EINVAL;

	}