tcp: keepalive cleanups
Introduce keepalive_probes(tp) helper, and use it, like
keepalive_time_when(tp) and keepalive_intvl_when(tp)
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index 9114524..59f69a6 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -2336,13 +2336,13 @@
val = !!(tp->nonagle&TCP_NAGLE_CORK);
break;
case TCP_KEEPIDLE:
- val = (tp->keepalive_time ? : sysctl_tcp_keepalive_time) / HZ;
+ val = keepalive_time_when(tp) / HZ;
break;
case TCP_KEEPINTVL:
- val = (tp->keepalive_intvl ? : sysctl_tcp_keepalive_intvl) / HZ;
+ val = keepalive_intvl_when(tp) / HZ;
break;
case TCP_KEEPCNT:
- val = tp->keepalive_probes ? : sysctl_tcp_keepalive_probes;
+ val = keepalive_probes(tp);
break;
case TCP_SYNCNT:
val = icsk->icsk_syn_retries ? : sysctl_tcp_syn_retries;
diff --git a/net/ipv4/tcp_timer.c b/net/ipv4/tcp_timer.c
index b144a26..c520fb6 100644
--- a/net/ipv4/tcp_timer.c
+++ b/net/ipv4/tcp_timer.c
@@ -499,8 +499,7 @@
elapsed = tcp_time_stamp - tp->rcv_tstamp;
if (elapsed >= keepalive_time_when(tp)) {
- if ((!tp->keepalive_probes && icsk->icsk_probes_out >= sysctl_tcp_keepalive_probes) ||
- (tp->keepalive_probes && icsk->icsk_probes_out >= tp->keepalive_probes)) {
+ if (icsk->icsk_probes_out >= keepalive_probes(tp)) {
tcp_send_active_reset(sk, GFP_ATOMIC);
tcp_write_err(sk);
goto out;
