diff options
| author | Eric Dumazet <edumazet@google.com> | 2022-05-13 11:33:59 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2022-05-16 10:18:56 +0100 |
| commit | 9957b38b5e7a44290f669757520ef2a5f5f6ceb8 (patch) | |
| tree | 17bb0b50668fe977dd2a4d4670cb35c65862b045 /net/ipv4 | |
| parent | 34b92e8d19da1e44070dc0ecc2747871469ac534 (diff) | |
tcp_cubic: make hystart_ack_delay() aware of BIG TCP
hystart_ack_delay() had the assumption that a TSO packet
would not be bigger than GSO_MAX_SIZE.
This will no longer be true.
We should use sk->sk_gso_max_size instead.
This reduces chances of spurious Hystart ACK train detections.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Alexander Duyck <alexanderduyck@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4')
| -rw-r--r-- | net/ipv4/tcp_cubic.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/net/ipv4/tcp_cubic.c b/net/ipv4/tcp_cubic.c index b0918839bee7..68178e7280ce 100644 --- a/net/ipv4/tcp_cubic.c +++ b/net/ipv4/tcp_cubic.c @@ -372,7 +372,7 @@ static void cubictcp_state(struct sock *sk, u8 new_state) * We apply another 100% factor because @rate is doubled at this point. * We cap the cushion to 1ms. */ -static u32 hystart_ack_delay(struct sock *sk) +static u32 hystart_ack_delay(const struct sock *sk) { unsigned long rate; @@ -380,7 +380,7 @@ static u32 hystart_ack_delay(struct sock *sk) if (!rate) return 0; return min_t(u64, USEC_PER_MSEC, - div64_ul((u64)GSO_MAX_SIZE * 4 * USEC_PER_SEC, rate)); + div64_ul((u64)sk->sk_gso_max_size * 4 * USEC_PER_SEC, rate)); } static void hystart_update(struct sock *sk, u32 delay) |