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tcp: rename tcp_skb_timestamp()
This helper returns a 32bit TCP TSval from skb->tstamp. As we are going to support usec or ms units soon, rename it to tcp_skb_timestamp_ts() and add a boolean to select the unit. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -837,17 +837,21 @@ static inline u32 tcp_stamp_us_delta(u64 t1, u64 t0)
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return max_t(s64, t1 - t0, 0);
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}
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static inline u32 tcp_skb_timestamp(const struct sk_buff *skb)
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{
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return tcp_ns_to_ts(skb->skb_mstamp_ns);
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}
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/* provide the departure time in us unit */
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static inline u64 tcp_skb_timestamp_us(const struct sk_buff *skb)
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{
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return div_u64(skb->skb_mstamp_ns, NSEC_PER_USEC);
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}
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/* Provide skb TSval in usec or ms unit */
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static inline u32 tcp_skb_timestamp_ts(bool usec_ts, const struct sk_buff *skb)
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{
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if (usec_ts)
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return tcp_skb_timestamp_us(skb);
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return div_u64(skb->skb_mstamp_ns, NSEC_PER_MSEC);
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}
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static inline u32 tcp_tw_tsval(const struct tcp_timewait_sock *tcptw)
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{
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return tcp_clock_ts(false) + tcptw->tw_ts_offset;
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@ -2442,7 +2442,7 @@ static bool tcp_skb_spurious_retrans(const struct tcp_sock *tp,
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const struct sk_buff *skb)
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{
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return (TCP_SKB_CB(skb)->sacked & TCPCB_RETRANS) &&
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tcp_tsopt_ecr_before(tp, tcp_skb_timestamp(skb));
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tcp_tsopt_ecr_before(tp, tcp_skb_timestamp_ts(false, skb));
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}
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/* Nothing was retransmitted or returned timestamp is less
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@ -799,7 +799,7 @@ static unsigned int tcp_syn_options(struct sock *sk, struct sk_buff *skb,
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if (likely(READ_ONCE(sock_net(sk)->ipv4.sysctl_tcp_timestamps) && !*md5)) {
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opts->options |= OPTION_TS;
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opts->tsval = tcp_skb_timestamp(skb) + tp->tsoffset;
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opts->tsval = tcp_skb_timestamp_ts(false, skb) + tp->tsoffset;
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opts->tsecr = tp->rx_opt.ts_recent;
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remaining -= TCPOLEN_TSTAMP_ALIGNED;
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}
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@ -884,7 +884,7 @@ static unsigned int tcp_synack_options(const struct sock *sk,
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}
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if (likely(ireq->tstamp_ok)) {
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opts->options |= OPTION_TS;
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opts->tsval = tcp_skb_timestamp(skb) + tcp_rsk(req)->ts_off;
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opts->tsval = tcp_skb_timestamp_ts(false, skb) + tcp_rsk(req)->ts_off;
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opts->tsecr = READ_ONCE(req->ts_recent);
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remaining -= TCPOLEN_TSTAMP_ALIGNED;
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}
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@ -943,7 +943,7 @@ static unsigned int tcp_established_options(struct sock *sk, struct sk_buff *skb
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if (likely(tp->rx_opt.tstamp_ok)) {
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opts->options |= OPTION_TS;
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opts->tsval = skb ? tcp_skb_timestamp(skb) + tp->tsoffset : 0;
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opts->tsval = skb ? tcp_skb_timestamp_ts(false, skb) + tp->tsoffset : 0;
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opts->tsecr = tp->rx_opt.ts_recent;
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size += TCPOLEN_TSTAMP_ALIGNED;
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}
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@ -3379,7 +3379,7 @@ int tcp_retransmit_skb(struct sock *sk, struct sk_buff *skb, int segs)
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/* Save stamp of the first (attempted) retransmit. */
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if (!tp->retrans_stamp)
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tp->retrans_stamp = tcp_skb_timestamp(skb);
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tp->retrans_stamp = tcp_skb_timestamp_ts(false, skb);
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if (tp->undo_retrans < 0)
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tp->undo_retrans = 0;
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@ -479,7 +479,7 @@ static bool tcp_rtx_probe0_timed_out(const struct sock *sk,
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return false;
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rtx_delta = (u32)msecs_to_jiffies(tcp_time_stamp(tp) -
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(tp->retrans_stamp ?: tcp_skb_timestamp(skb)));
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(tp->retrans_stamp ?: tcp_skb_timestamp_ts(false, skb)));
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return rtx_delta > timeout;
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}
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@ -534,7 +534,7 @@ void tcp_retransmit_timer(struct sock *sk)
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struct inet_sock *inet = inet_sk(sk);
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u32 rtx_delta;
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rtx_delta = tcp_time_stamp(tp) - (tp->retrans_stamp ?: tcp_skb_timestamp(skb));
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rtx_delta = tcp_time_stamp(tp) - (tp->retrans_stamp ?: tcp_skb_timestamp_ts(false, skb));
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if (sk->sk_family == AF_INET) {
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net_dbg_ratelimited("Probing zero-window on %pI4:%u/%u, seq=%u:%u, recv %ums ago, lasting %ums\n",
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&inet->inet_daddr, ntohs(inet->inet_dport),
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