* [PATCH V4 net-next 2/3] tcp: Add tcp_retransmit_stamp() helper routine
@ 2018-07-19 1:14 Jon Maxwell
2018-07-19 9:31 ` Sergei Shtylyov
2018-07-19 13:49 ` Eric Dumazet
0 siblings, 2 replies; 3+ messages in thread
From: Jon Maxwell @ 2018-07-19 1:14 UTC (permalink / raw)
To: davem
Cc: edumazet, ncardwell, David.Laight, kuznet, yoshfuji, netdev,
linux-kernel, jmaxwell
Create a seperate helper routine as per Neal Cardwells suggestion. To
be used by the final commit in this series and retransmits_timed_out().
Signed-off-by: Jon Maxwell <jmaxwell37@gmail.com>
---
net/ipv4/tcp_timer.c | 25 +++++++++++++++++--------
1 file changed, 17 insertions(+), 8 deletions(-)
diff --git a/net/ipv4/tcp_timer.c b/net/ipv4/tcp_timer.c
index fa34984d0b12..d212f183dd2d 100644
--- a/net/ipv4/tcp_timer.c
+++ b/net/ipv4/tcp_timer.c
@@ -22,6 +22,20 @@
#include <linux/gfp.h>
#include <net/tcp.h>
+u32 tcp_retransmit_stamp(const struct sock *sk)
+{
+ u32 start_ts = tcp_sk(sk)->retrans_stamp;
+
+ if (unlikely(!start_ts)) {
+ struct sk_buff *head = tcp_rtx_queue_head(sk);
+
+ if (!head)
+ return 0;
+ start_ts = tcp_skb_timestamp(head);
+ }
+ return start_ts;
+}
+
/**
* tcp_write_err() - close socket and save error info
* @sk: The socket the error has appeared on.
@@ -166,14 +180,9 @@ static bool retransmits_timed_out(struct sock *sk,
if (!inet_csk(sk)->icsk_retransmits)
return false;
- start_ts = tcp_sk(sk)->retrans_stamp;
- if (unlikely(!start_ts)) {
- struct sk_buff *head = tcp_rtx_queue_head(sk);
-
- if (!head)
- return false;
- start_ts = tcp_skb_timestamp(head);
- }
+ start_ts = tcp_retransmit_stamp(sk);
+ if (!start_ts)
+ return false;
if (likely(timeout == 0)) {
linear_backoff_thresh = ilog2(TCP_RTO_MAX/rto_base);
--
2.13.6
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [PATCH V4 net-next 2/3] tcp: Add tcp_retransmit_stamp() helper routine
2018-07-19 1:14 [PATCH V4 net-next 2/3] tcp: Add tcp_retransmit_stamp() helper routine Jon Maxwell
@ 2018-07-19 9:31 ` Sergei Shtylyov
2018-07-19 13:49 ` Eric Dumazet
1 sibling, 0 replies; 3+ messages in thread
From: Sergei Shtylyov @ 2018-07-19 9:31 UTC (permalink / raw)
To: Jon Maxwell, davem
Cc: edumazet, ncardwell, David.Laight, kuznet, yoshfuji, netdev,
linux-kernel, jmaxwell
Hello!
On 7/19/2018 4:14 AM, Jon Maxwell wrote:
> Create a seperate helper routine as per Neal Cardwells suggestion. To
Cardwell's. Perhaps copuld be fixed while applying...
> be used by the final commit in this series and retransmits_timed_out().
>
> Signed-off-by: Jon Maxwell <jmaxwell37@gmail.com>
[...]
MBR, Sergei
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH V4 net-next 2/3] tcp: Add tcp_retransmit_stamp() helper routine
2018-07-19 1:14 [PATCH V4 net-next 2/3] tcp: Add tcp_retransmit_stamp() helper routine Jon Maxwell
2018-07-19 9:31 ` Sergei Shtylyov
@ 2018-07-19 13:49 ` Eric Dumazet
1 sibling, 0 replies; 3+ messages in thread
From: Eric Dumazet @ 2018-07-19 13:49 UTC (permalink / raw)
To: Jon Maxwell, davem
Cc: edumazet, ncardwell, David.Laight, kuznet, yoshfuji, netdev,
linux-kernel, jmaxwell
On 07/18/2018 06:14 PM, Jon Maxwell wrote:
> Create a seperate helper routine as per Neal Cardwells suggestion. To
> be used by the final commit in this series and retransmits_timed_out().
>
> Signed-off-by: Jon Maxwell <jmaxwell37@gmail.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2018-07-19 13:49 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2018-07-19 1:14 [PATCH V4 net-next 2/3] tcp: Add tcp_retransmit_stamp() helper routine Jon Maxwell
2018-07-19 9:31 ` Sergei Shtylyov
2018-07-19 13:49 ` Eric Dumazet
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).