diff options
Diffstat (limited to 'net/ipv4/tcp_dctcp.c')
| -rw-r--r-- | net/ipv4/tcp_dctcp.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/net/ipv4/tcp_dctcp.c b/net/ipv4/tcp_dctcp.c index ab37c6775630..bde22ebb92a8 100644 --- a/net/ipv4/tcp_dctcp.c +++ b/net/ipv4/tcp_dctcp.c @@ -188,8 +188,8 @@ static void dctcp_ce_state_1_to_0(struct sock *sk) static void dctcp_update_alpha(struct sock *sk, u32 flags) { - const struct tcp_sock *tp = tcp_sk(sk); struct dctcp *ca = inet_csk_ca(sk); + struct tcp_sock *tp = tcp_sk(sk); u32 acked_bytes = tp->snd_una - ca->prior_snd_una; /* If ack did not advance snd_una, count dupack as MSS size. @@ -229,6 +229,13 @@ static void dctcp_update_alpha(struct sock *sk, u32 flags) WRITE_ONCE(ca->dctcp_alpha, alpha); dctcp_reset(tp, ca); } + + if (flags & CA_ACK_ECE) { + unsigned int cwnd = dctcp_ssthresh(sk); + + if (cwnd != tp->snd_cwnd) + tp->snd_cwnd = cwnd; + } } static void dctcp_state(struct sock *sk, u8 new_state) @@ -335,6 +342,7 @@ static struct tcp_congestion_ops dctcp __read_mostly = { static struct tcp_congestion_ops dctcp_reno __read_mostly = { .ssthresh = tcp_reno_ssthresh, .cong_avoid = tcp_reno_cong_avoid, + .undo_cwnd = tcp_reno_undo_cwnd, .get_info = dctcp_get_info, .owner = THIS_MODULE, .name = "dctcp-reno", |