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tcp: Move timestamps from inetpeer to metrics cache.

Browse Source 
With help from Lin Ming.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller
2012-07-10 03:14:24 -07:00
parent 94334d5ed4
commit 81166dd6fa
9 changed files with 149 additions and 127 deletions
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46
net/ipv4/tcp_minisocks.c
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@@ -49,52 +49,6 @@ struct inet_timewait_death_row tcp_death_row = {
};
EXPORT_SYMBOL_GPL(tcp_death_row);
/* VJ's idea. Save last timestamp seen from this destination
* and hold it at least for normal timewait interval to use for duplicate
* segment detection in subsequent connections, before they enter synchronized
* state.
*/
static bool tcp_remember_stamp(struct sock *sk)
{
const struct inet_connection_sock *icsk = inet_csk(sk);
struct tcp_sock *tp = tcp_sk(sk);
struct inet_peer *peer;
peer = icsk->icsk_af_ops->get_peer(sk);
if (peer) {
if ((s32)(peer->tcp_ts - tp->rx_opt.ts_recent) <= 0 ||
((u32)get_seconds() - peer->tcp_ts_stamp > TCP_PAWS_MSL &&
peer->tcp_ts_stamp <= (u32)tp->rx_opt.ts_recent_stamp)) {
peer->tcp_ts_stamp = (u32)tp->rx_opt.ts_recent_stamp;
peer->tcp_ts = tp->rx_opt.ts_recent;
}
return true;
}
return false;
}
static bool tcp_tw_remember_stamp(struct inet_timewait_sock *tw)
{
const struct tcp_timewait_sock *tcptw;
struct sock *sk = (struct sock *) tw;
struct inet_peer *peer;
tcptw = tcp_twsk(sk);
peer = tcptw->tw_peer;
if (peer) {
if ((s32)(peer->tcp_ts - tcptw->tw_ts_recent) <= 0 ||
((u32)get_seconds() - peer->tcp_ts_stamp > TCP_PAWS_MSL &&
peer->tcp_ts_stamp <= (u32)tcptw->tw_ts_recent_stamp)) {
peer->tcp_ts_stamp = (u32)tcptw->tw_ts_recent_stamp;
peer->tcp_ts = tcptw->tw_ts_recent;
}
return true;
}
return false;
}
static bool tcp_in_window(u32 seq, u32 end_seq, u32 s_win, u32 e_win)
{
if (seq == s_win)