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tcp: rename tcp_time_stamp() to tcp_time_stamp_ts()

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This helper returns a TSval from a TCP socket.

It currently calls tcp_time_stamp_ms() but will soon
be able to return a usec based TSval, depending
on an upcoming tp->tcp_usec_ts field.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet 2023-10-20 12:57:43 +00:00 committed by David S. Miller
parent 003e07a1e4
commit 9d0c00f5ca
5 changed files with 15 additions and 16 deletions
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11
include/net/tcp.h
View file

@ -813,17 +813,16 @@ static inline u32 tcp_clock_ts(bool usec_ts)
return usec_ts ? tcp_clock_us() : tcp_clock_ms();
}
/* This should only be used in contexts where tp->tcp_mstamp is up to date */
static inline u32 tcp_time_stamp(const struct tcp_sock *tp)
{
return div_u64(tp->tcp_mstamp, USEC_PER_SEC / TCP_TS_HZ);
}
static inline u32 tcp_time_stamp_ms(const struct tcp_sock *tp)
{
return div_u64(tp->tcp_mstamp, USEC_PER_MSEC);
}
static inline u32 tcp_time_stamp_ts(const struct tcp_sock *tp)
{
return tcp_time_stamp_ms(tp);
}
void tcp_mstamp_refresh(struct tcp_sock *tp);
static inline u32 tcp_stamp_us_delta(u64 t1, u64 t0)

6
net/ipv4/tcp_input.c
View file

@ -704,7 +704,7 @@ static inline void tcp_rcv_rtt_measure_ts(struct sock *sk,
if (TCP_SKB_CB(skb)->end_seq -
TCP_SKB_CB(skb)->seq >= inet_csk(sk)->icsk_ack.rcv_mss) {
u32 delta = tcp_time_stamp(tp) - tp->rx_opt.rcv_tsecr;
u32 delta = tcp_time_stamp_ts(tp) - tp->rx_opt.rcv_tsecr;
u32 delta_us;
if (likely(delta < INT_MAX / (USEC_PER_SEC / TCP_TS_HZ))) {
@ -3148,7 +3148,7 @@ static bool tcp_ack_update_rtt(struct sock *sk, const int flag,
*/
if (seq_rtt_us < 0 && tp->rx_opt.saw_tstamp && tp->rx_opt.rcv_tsecr &&
flag & FLAG_ACKED) {
u32 delta = tcp_time_stamp(tp) - tp->rx_opt.rcv_tsecr;
u32 delta = tcp_time_stamp_ts(tp) - tp->rx_opt.rcv_tsecr;
if (likely(delta < INT_MAX / (USEC_PER_SEC / TCP_TS_HZ))) {
if (!delta)
@ -6293,7 +6293,7 @@ static int tcp_rcv_synsent_state_process(struct sock *sk, struct sk_buff *skb,
if (tp->rx_opt.saw_tstamp && tp->rx_opt.rcv_tsecr &&
!between(tp->rx_opt.rcv_tsecr, tp->retrans_stamp,
tcp_time_stamp(tp))) {
tcp_time_stamp_ts(tp))) {
NET_INC_STATS(sock_net(sk),
LINUX_MIB_PAWSACTIVEREJECTED);
goto reset_and_undo;

2
net/ipv4/tcp_lp.c
View file

@ -272,7 +272,7 @@ static void tcp_lp_pkts_acked(struct sock *sk, const struct ack_sample *sample)
{
struct tcp_sock *tp = tcp_sk(sk);
struct lp *lp = inet_csk_ca(sk);
u32 now = tcp_time_stamp(tp);
u32 now = tcp_time_stamp_ts(tp);
u32 delta;
if (sample->rtt_us > 0)

2
net/ipv4/tcp_output.c
View file

@ -3961,7 +3961,7 @@ int tcp_connect(struct sock *sk)
tcp_init_nondata_skb(buff, tp->write_seq++, TCPHDR_SYN);
tcp_mstamp_refresh(tp);
tp->retrans_stamp = tcp_time_stamp(tp);
tp->retrans_stamp = tcp_time_stamp_ts(tp);
tcp_connect_queue_skb(sk, buff);
tcp_ecn_send_syn(sk, buff);
tcp_rbtree_insert(&sk->tcp_rtx_queue, buff);

10
net/ipv4/tcp_timer.c
View file

@ -33,7 +33,7 @@ static u32 tcp_clamp_rto_to_user_timeout(const struct sock *sk)
user_timeout = READ_ONCE(icsk->icsk_user_timeout);
if (!user_timeout)
return icsk->icsk_rto;
elapsed = tcp_time_stamp(tcp_sk(sk)) - start_ts;
elapsed = tcp_time_stamp_ts(tcp_sk(sk)) - start_ts;
remaining = user_timeout - elapsed;
if (remaining <= 0)
return 1; /* user timeout has passed; fire ASAP */
@ -226,7 +226,7 @@ static bool retransmits_timed_out(struct sock *sk,
timeout = tcp_model_timeout(sk, boundary, rto_base);
}
return (s32)(tcp_time_stamp(tcp_sk(sk)) - start_ts - timeout) >= 0;
return (s32)(tcp_time_stamp_ts(tcp_sk(sk)) - start_ts - timeout) >= 0;
}
/* A write timeout has occurred. Process the after effects. */
@ -462,7 +462,7 @@ static void tcp_fastopen_synack_timer(struct sock *sk, struct request_sock *req)
req->num_timeout++;
tcp_update_rto_stats(sk);
if (!tp->retrans_stamp)
tp->retrans_stamp = tcp_time_stamp(tp);
tp->retrans_stamp = tcp_time_stamp_ts(tp);
inet_csk_reset_xmit_timer(sk, ICSK_TIME_RETRANS,
req->timeout << req->num_timeout, TCP_RTO_MAX);
}
@ -478,7 +478,7 @@ static bool tcp_rtx_probe0_timed_out(const struct sock *sk,
if (rcv_delta <= timeout)
return false;
rtx_delta = (u32)msecs_to_jiffies(tcp_time_stamp(tp) -
rtx_delta = (u32)msecs_to_jiffies(tcp_time_stamp_ts(tp) -
(tp->retrans_stamp ?: tcp_skb_timestamp_ts(false, skb)));
return rtx_delta > timeout;
@ -534,7 +534,7 @@ void tcp_retransmit_timer(struct sock *sk)
struct inet_sock *inet = inet_sk(sk);
u32 rtx_delta;
rtx_delta = tcp_time_stamp(tp) - (tp->retrans_stamp ?: tcp_skb_timestamp_ts(false, skb));
rtx_delta = tcp_time_stamp_ts(tp) - (tp->retrans_stamp ?: tcp_skb_timestamp_ts(false, skb));
if (sk->sk_family == AF_INET) {
net_dbg_ratelimited("Probing zero-window on %pI4:%u/%u, seq=%u:%u, recv %ums ago, lasting %ums\n",
&inet->inet_daddr, ntohs(inet->inet_dport),