[DCCP]: Convert dccp_sample_rtt to ktime_t

Signed-off-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 10 insertions, 13 deletions

diff --git a/net/dccp/input.c b/net/dccp/input.c
index da6ec185ed5b..782cdb7292fa 100644
--- a/net/dccp/input.c
+++ b/net/dccp/input.c
@@ -301,12 +301,10 @@ static int dccp_rcv_request_sent_state_process(struct sock *sk,
                         goto out_invalid_packet;
 
                 /* Obtain RTT sample from SYN exchange (used by CCID 3) */
-                if (dp->dccps_options_received.dccpor_timestamp_echo) {
-                        struct timeval now;
-
-                        dccp_timestamp(sk, &now);
-                        dp->dccps_syn_rtt = dccp_sample_rtt(sk, &now, NULL);
-                }
+                if (dp->dccps_options_received.dccpor_timestamp_echo)
+                        dp->dccps_syn_rtt = dccp_sample_rtt(sk,
+                                                            ktime_get_real(),
+                                                            NULL);
 
                 if (dccp_msk(sk)->dccpms_send_ack_vector &&
                     dccp_ackvec_add(dp->dccps_hc_rx_ackvec, sk,
@@ -593,22 +591,21 @@ EXPORT_SYMBOL_GPL(dccp_rcv_state_process);
  * @t_recv: receive timestamp of packet with timestamp echo
  * @t_hist: packet history timestamp or NULL
  */
-u32 dccp_sample_rtt(struct sock *sk, struct timeval *t_recv,
-                                     struct timeval *t_hist)
+u32 dccp_sample_rtt(struct sock *sk, ktime_t t_recv, ktime_t *t_hist)
 {
         struct dccp_sock *dp = dccp_sk(sk);
         struct dccp_options_received *or = &dp->dccps_options_received;
-        suseconds_t delta;
+        s64 delta;
 
         if (t_hist == NULL) {
                 if (!or->dccpor_timestamp_echo) {
                         DCCP_WARN("packet without timestamp echo\n");
                         return DCCP_SANE_RTT_MAX;
                 }
-                timeval_sub_usecs(t_recv, or->dccpor_timestamp_echo * 10);
-                delta = timeval_usecs(t_recv);
+                ktime_sub_us(t_recv, or->dccpor_timestamp_echo * 10);
+                delta = ktime_to_us(t_recv);
         } else
-                delta = timeval_delta(t_recv, t_hist);
+                delta = ktime_us_delta(t_recv, *t_hist);
 
         delta -= or->dccpor_elapsed_time * 10;          /* either set or 0 */
 
@@ -616,7 +613,7 @@ u32 dccp_sample_rtt(struct sock *sk, struct timeval *t_recv,
                 DCCP_WARN("unusable RTT sample %ld, using min\n", (long)delta);
                 return DCCP_SANE_RTT_MIN;
         }
-        if (unlikely(delta - (suseconds_t)DCCP_SANE_RTT_MAX > 0)) {
+        if (unlikely(delta - (s64)DCCP_SANE_RTT_MAX > 0)) {
                 DCCP_WARN("RTT sample %ld too large, using max\n", (long)delta);
                 return DCCP_SANE_RTT_MAX;
         }