Commit d0f36847 authored by Eric Dumazet's avatar Eric Dumazet Committed by David S. Miller

tcp: tcp_mtu_probing() cleanup

Reduce one indentation level to make code more readable.
tcp_sync_mss() can be factorized.
Signed-off-by: default avatarEric Dumazet <edumazet@google.com>
Acked-by: default avatarNeal Cardwell <ncardwell@google.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent f21506cb
...@@ -107,26 +107,23 @@ static int tcp_orphan_retries(struct sock *sk, bool alive) ...@@ -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) 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 */ /* Black hole detection */
if (net->ipv4.sysctl_tcp_mtu_probing) { if (!net->ipv4.sysctl_tcp_mtu_probing)
if (!icsk->icsk_mtup.enabled) { return;
icsk->icsk_mtup.enabled = 1;
icsk->icsk_mtup.probe_timestamp = tcp_jiffies32; if (!icsk->icsk_mtup.enabled) {
tcp_sync_mss(sk, icsk->icsk_pmtu_cookie); icsk->icsk_mtup.enabled = 1;
} else { icsk->icsk_mtup.probe_timestamp = tcp_jiffies32;
struct net *net = sock_net(sk); } else {
struct tcp_sock *tp = tcp_sk(sk); mss = tcp_mtu_to_mss(sk, icsk->icsk_mtup.search_low) >> 1;
int mss; mss = min(net->ipv4.sysctl_tcp_base_mss, mss);
mss = max(mss, 68 - tcp_sk(sk)->tcp_header_len);
mss = tcp_mtu_to_mss(sk, icsk->icsk_mtup.search_low) >> 1; icsk->icsk_mtup.search_low = tcp_mss_to_mtu(sk, mss);
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);
}
} }
tcp_sync_mss(sk, icsk->icsk_pmtu_cookie);
} }
......
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