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author | 2019-01-25 10:53:19 -0800 | |
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committer | 2019-01-27 13:29:43 -0800 | |
commit | 31954cd8bb667030b1c0d3d77f28fe71f06999f9 (patch) | |
tree | f00b43f2669ac70db625d8babe06e89cd0a731e2 /net/dccp/timer.c | |
parent | net: ipv4: ip_input: fix blank line coding style issues (diff) | |
download | linux-31954cd8bb667030b1c0d3d77f28fe71f06999f9.tar.gz linux-31954cd8bb667030b1c0d3d77f28fe71f06999f9.tar.bz2 linux-31954cd8bb667030b1c0d3d77f28fe71f06999f9.zip |
tcp: Refactor pingpong code
Instead of using pingpong as a single bit information, we refactor the
code to treat it as a counter. When interactive session is detected,
we set pingpong count to TCP_PINGPONG_THRESH. And when pingpong count
is >= TCP_PINGPONG_THRESH, we consider the session in pingpong mode.
This patch is a pure refactor and sets foundation for the next patch.
This patch itself does not change any pingpong logic.
Signed-off-by: Wei Wang <weiwan@google.com>
Signed-off-by: Yuchung Cheng <ycheng@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/dccp/timer.c')
-rw-r--r-- | net/dccp/timer.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/net/dccp/timer.c b/net/dccp/timer.c index 1501a20a94ca..74e138495d67 100644 --- a/net/dccp/timer.c +++ b/net/dccp/timer.c @@ -199,7 +199,7 @@ static void dccp_delack_timer(struct timer_list *t) icsk->icsk_ack.pending &= ~ICSK_ACK_TIMER; if (inet_csk_ack_scheduled(sk)) { - if (!icsk->icsk_ack.pingpong) { + if (!inet_csk_in_pingpong_mode(sk)) { /* Delayed ACK missed: inflate ATO. */ icsk->icsk_ack.ato = min(icsk->icsk_ack.ato << 1, icsk->icsk_rto); @@ -207,7 +207,7 @@ static void dccp_delack_timer(struct timer_list *t) /* Delayed ACK missed: leave pingpong mode and * deflate ATO. */ - icsk->icsk_ack.pingpong = 0; + inet_csk_exit_pingpong_mode(sk); icsk->icsk_ack.ato = TCP_ATO_MIN; } dccp_send_ack(sk); |