diff options
Diffstat (limited to 'net/ipv4')
| -rw-r--r-- | net/ipv4/tcp.c | 49 |
1 files changed, 34 insertions, 15 deletions
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c index 0004bd9ae7b0..bdf0ff933351 100644 --- a/net/ipv4/tcp.c +++ b/net/ipv4/tcp.c @@ -2901,6 +2901,39 @@ void tcp_sock_set_user_timeout(struct sock *sk, u32 val) } EXPORT_SYMBOL(tcp_sock_set_user_timeout); +static int __tcp_sock_set_keepidle(struct sock *sk, int val) +{ + struct tcp_sock *tp = tcp_sk(sk); + + if (val < 1 || val > MAX_TCP_KEEPIDLE) + return -EINVAL; + + tp->keepalive_time = val * HZ; + if (sock_flag(sk, SOCK_KEEPOPEN) && + !((1 << sk->sk_state) & (TCPF_CLOSE | TCPF_LISTEN))) { + u32 elapsed = keepalive_time_elapsed(tp); + + if (tp->keepalive_time > elapsed) + elapsed = tp->keepalive_time - elapsed; + else + elapsed = 0; + inet_csk_reset_keepalive_timer(sk, elapsed); + } + + return 0; +} + +int tcp_sock_set_keepidle(struct sock *sk, int val) +{ + int err; + + lock_sock(sk); + err = __tcp_sock_set_keepidle(sk, val); + release_sock(sk); + return err; +} +EXPORT_SYMBOL(tcp_sock_set_keepidle); + /* * Socket option code for TCP. */ @@ -3070,21 +3103,7 @@ static int do_tcp_setsockopt(struct sock *sk, int level, break; case TCP_KEEPIDLE: - if (val < 1 || val > MAX_TCP_KEEPIDLE) - err = -EINVAL; - else { - tp->keepalive_time = val * HZ; - if (sock_flag(sk, SOCK_KEEPOPEN) && - !((1 << sk->sk_state) & - (TCPF_CLOSE | TCPF_LISTEN))) { - u32 elapsed = keepalive_time_elapsed(tp); - if (tp->keepalive_time > elapsed) - elapsed = tp->keepalive_time - elapsed; - else - elapsed = 0; - inet_csk_reset_keepalive_timer(sk, elapsed); - } - } + err = __tcp_sock_set_keepidle(sk, val); break; case TCP_KEEPINTVL: if (val < 1 || val > MAX_TCP_KEEPINTVL) |