diff options
| author |   Ilpo Järvinen <ij@kernel.org> | 2025-03-05 23:38:52 +0100 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2025-03-17 13:56:38 +0000 |
| commit | 9866884ce8ef25338c5b33cbb97c2b5d92088528 (patch) | |
| tree | 417a50826b2c13603456571c9c407a387b785dab /net/ipv4/tcp_output.c | |
| parent | tcp: add new TCP_TW_ACK_OOW state and allow ECN bits in TOS (diff) | |
| download | wireguard-linux-9866884ce8ef25338c5b33cbb97c2b5d92088528.tar.xz wireguard-linux-9866884ce8ef25338c5b33cbb97c2b5d92088528.zip | |
tcp: Pass flags to __tcp_send_ack
Accurate ECN needs to send custom flags to handle IP-ECN
field reflection during handshake.
Signed-off-by: Ilpo Järvinen <ij@kernel.org>
Signed-off-by: Chia-Yu Chang <chia-yu.chang@nokia-bell-labs.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to '')
| -rw-r--r-- | net/ipv4/tcp_output.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c index fffbd3ee44ed..e0a4e5432399 100644 --- a/net/ipv4/tcp_output.c +++ b/net/ipv4/tcp_output.c @@ -4240,7 +4240,7 @@ void tcp_send_delayed_ack(struct sock *sk) } /* This routine sends an ack and also updates the window. */ -void __tcp_send_ack(struct sock *sk, u32 rcv_nxt) +void __tcp_send_ack(struct sock *sk, u32 rcv_nxt, u16 flags) { struct sk_buff *buff; @@ -4269,7 +4269,7 @@ void __tcp_send_ack(struct sock *sk, u32 rcv_nxt) /* Reserve space for headers and prepare control bits. */ skb_reserve(buff, MAX_TCP_HEADER); - tcp_init_nondata_skb(buff, tcp_acceptable_seq(sk), TCPHDR_ACK); + tcp_init_nondata_skb(buff, tcp_acceptable_seq(sk), TCPHDR_ACK | flags); /* We do not want pure acks influencing TCP Small Queues or fq/pacing * too much. @@ -4284,7 +4284,7 @@ EXPORT_SYMBOL_GPL(__tcp_send_ack); void tcp_send_ack(struct sock *sk) { - __tcp_send_ack(sk, tcp_sk(sk)->rcv_nxt); + __tcp_send_ack(sk, tcp_sk(sk)->rcv_nxt, 0); } /* This routine sends a packet with an out of date sequence |