* [PATCH net-next] tcp: tcp_mtu_probing() cleanup
@ 2017-11-03 13:09 Eric Dumazet
2017-11-03 22:10 ` Neal Cardwell
2017-11-05 13:15 ` David Miller
0 siblings, 2 replies; 3+ messages in thread
From: Eric Dumazet @ 2017-11-03 13:09 UTC (permalink / raw)
To: David Miller; +Cc: netdev
From: Eric Dumazet <edumazet@google.com>
Reduce one indentation level to make code more readable.
tcp_sync_mss() can be factorized.
Signed-off-by: Eric Dumazet <edumazet@google.com>
---
net/ipv4/tcp_timer.c | 31 ++++++++++++++-----------------
1 file changed, 14 insertions(+), 17 deletions(-)
diff --git a/net/ipv4/tcp_timer.c b/net/ipv4/tcp_timer.c
index 035a1ef1f2d8462c1d19f364b599ffac538ef688..16df6dd44b988a128d97df3a7953437499a216e8 100644
--- a/net/ipv4/tcp_timer.c
+++ b/net/ipv4/tcp_timer.c
@@ -107,26 +107,23 @@ static int tcp_orphan_retries(struct sock *sk, bool alive)
static void tcp_mtu_probing(struct inet_connection_sock *icsk, struct sock *sk)
{
- struct net *net = sock_net(sk);
+ const struct net *net = sock_net(sk);
+ int mss;
/* Black hole detection */
- if (net->ipv4.sysctl_tcp_mtu_probing) {
- if (!icsk->icsk_mtup.enabled) {
- icsk->icsk_mtup.enabled = 1;
- icsk->icsk_mtup.probe_timestamp = tcp_jiffies32;
- tcp_sync_mss(sk, icsk->icsk_pmtu_cookie);
- } else {
- struct net *net = sock_net(sk);
- struct tcp_sock *tp = tcp_sk(sk);
- int mss;
-
- mss = tcp_mtu_to_mss(sk, icsk->icsk_mtup.search_low) >> 1;
- mss = min(net->ipv4.sysctl_tcp_base_mss, mss);
- mss = max(mss, 68 - tp->tcp_header_len);
- icsk->icsk_mtup.search_low = tcp_mss_to_mtu(sk, mss);
- tcp_sync_mss(sk, icsk->icsk_pmtu_cookie);
- }
+ if (!net->ipv4.sysctl_tcp_mtu_probing)
+ return;
+
+ if (!icsk->icsk_mtup.enabled) {
+ icsk->icsk_mtup.enabled = 1;
+ icsk->icsk_mtup.probe_timestamp = tcp_jiffies32;
+ } else {
+ mss = tcp_mtu_to_mss(sk, icsk->icsk_mtup.search_low) >> 1;
+ mss = min(net->ipv4.sysctl_tcp_base_mss, mss);
+ mss = max(mss, 68 - tcp_sk(sk)->tcp_header_len);
+ icsk->icsk_mtup.search_low = tcp_mss_to_mtu(sk, mss);
}
+ tcp_sync_mss(sk, icsk->icsk_pmtu_cookie);
}
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [PATCH net-next] tcp: tcp_mtu_probing() cleanup
2017-11-03 13:09 [PATCH net-next] tcp: tcp_mtu_probing() cleanup Eric Dumazet
@ 2017-11-03 22:10 ` Neal Cardwell
2017-11-05 13:15 ` David Miller
1 sibling, 0 replies; 3+ messages in thread
From: Neal Cardwell @ 2017-11-03 22:10 UTC (permalink / raw)
To: Eric Dumazet; +Cc: David Miller, netdev
On Fri, Nov 3, 2017 at 9:09 AM, Eric Dumazet <eric.dumazet@gmail.com> wrote:
> From: Eric Dumazet <edumazet@google.com>
>
> Reduce one indentation level to make code more readable.
> tcp_sync_mss() can be factorized.
>
> Signed-off-by: Eric Dumazet <edumazet@google.com>
> ---
> net/ipv4/tcp_timer.c | 31 ++++++++++++++-----------------
> 1 file changed, 14 insertions(+), 17 deletions(-)
Acked-by: Neal Cardwell <ncardwell@google.com>
Thanks, Eric!
neal
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH net-next] tcp: tcp_mtu_probing() cleanup
2017-11-03 13:09 [PATCH net-next] tcp: tcp_mtu_probing() cleanup Eric Dumazet
2017-11-03 22:10 ` Neal Cardwell
@ 2017-11-05 13:15 ` David Miller
1 sibling, 0 replies; 3+ messages in thread
From: David Miller @ 2017-11-05 13:15 UTC (permalink / raw)
To: eric.dumazet; +Cc: netdev
From: Eric Dumazet <eric.dumazet@gmail.com>
Date: Fri, 03 Nov 2017 06:09:17 -0700
> From: Eric Dumazet <edumazet@google.com>
>
> Reduce one indentation level to make code more readable.
> tcp_sync_mss() can be factorized.
>
> Signed-off-by: Eric Dumazet <edumazet@google.com>
Applied.
^ permalink raw reply [flat|nested] 3+ messages in thread
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2017-11-03 13:09 [PATCH net-next] tcp: tcp_mtu_probing() cleanup Eric Dumazet
2017-11-03 22:10 ` Neal Cardwell
2017-11-05 13:15 ` David Miller
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