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authorArnaldo Carvalho de Melo <acme@mandriva.com>2005-09-09 02:38:35 -0300
committerArnaldo Carvalho de Melo <acme@mandriva.com>2005-09-09 02:38:35 -0300
commitb0e567806d16586629468c824dfb2e71155df7da (patch)
tree70f5905fae3270985fed1050335c56598fd32646 /net/dccp/ccids
parent954ee31f366fabe53fb450482789258fe552f40b (diff)
downloadop-kernel-dev-b0e567806d16586629468c824dfb2e71155df7da.zip
op-kernel-dev-b0e567806d16586629468c824dfb2e71155df7da.tar.gz
[DCCP] Introduce dccp_timestamp
To start the timestamps with 0.0ms, easing the integer maths in the CCIDs, this probably will be reworked to use the to be introduced struct timeval_offset infrastructure out of skb_get_timestamp, etc. Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
Diffstat (limited to 'net/dccp/ccids')
-rw-r--r--net/dccp/ccids/ccid3.c27
-rw-r--r--net/dccp/ccids/ccid3.h2
-rw-r--r--net/dccp/ccids/lib/packet_history.h3
3 files changed, 17 insertions, 15 deletions
diff --git a/net/dccp/ccids/ccid3.c b/net/dccp/ccids/ccid3.c
index 145aafa..348e6fb 100644
--- a/net/dccp/ccids/ccid3.c
+++ b/net/dccp/ccids/ccid3.c
@@ -169,7 +169,7 @@ static void ccid3_hc_tx_update_x(struct sock *sk)
} else {
struct timeval now;
- do_gettimeofday(&now);
+ dccp_timestamp(sk, &now);
if (timeval_delta(&now, &hctx->ccid3hctx_t_ld) >=
hctx->ccid3hctx_rtt) {
hctx->ccid3hctx_x = max_t(u32, min_t(u32, hctx->ccid3hctx_x_recv,
@@ -317,7 +317,7 @@ static int ccid3_hc_tx_send_packet(struct sock *sk,
dccp_tx_hist_add_entry(&hctx->ccid3hctx_hist, new_packet);
}
- do_gettimeofday(&now);
+ dccp_timestamp(sk, &now);
switch (hctx->ccid3hctx_state) {
case TFRC_SSTATE_NO_SENT:
@@ -382,7 +382,7 @@ static void ccid3_hc_tx_packet_sent(struct sock *sk, int more, int len)
return;
}
- do_gettimeofday(&now);
+ dccp_timestamp(sk, &now);
/* check if we have sent a data packet */
if (len > 0) {
@@ -461,6 +461,7 @@ static void ccid3_hc_tx_packet_recv(struct sock *sk, struct sk_buff *skb)
struct ccid3_hc_tx_sock *hctx = dp->dccps_hc_tx_ccid_private;
struct ccid3_options_received *opt_recv;
struct dccp_tx_hist_entry *packet;
+ struct timeval now;
unsigned long next_tmout;
u32 t_elapsed;
u32 pinv;
@@ -508,7 +509,8 @@ static void ccid3_hc_tx_packet_recv(struct sock *sk, struct sk_buff *skb)
}
/* Update RTT */
- r_sample = timeval_now_delta(&packet->dccphtx_tstamp);
+ dccp_timestamp(sk, &now);
+ r_sample = timeval_delta(&now, &packet->dccphtx_tstamp);
if (unlikely(r_sample <= t_elapsed))
LIMIT_NETDEBUG(KERN_WARNING
"%s: r_sample=%uus, t_elapsed=%uus\n",
@@ -774,7 +776,7 @@ static void ccid3_hc_rx_send_feedback(struct sock *sk)
ccid3_pr_debug("%s, sk=%p\n", dccp_role(sk), sk);
- do_gettimeofday(&now);
+ dccp_timestamp(sk, &now);
switch (hcrx->ccid3hcrx_state) {
case TFRC_RSTATE_NO_DATA:
@@ -903,10 +905,9 @@ found:
if (rtt == 0)
rtt = 1;
- delta = timeval_now_delta(&hcrx->ccid3hcrx_tstamp_last_feedback);
- x_recv = hcrx->ccid3hcrx_bytes_recv * USEC_PER_SEC;
- if (likely(delta > 1))
- x_recv /= delta;
+ dccp_timestamp(sk, &tstamp);
+ delta = timeval_delta(&tstamp, &hcrx->ccid3hcrx_tstamp_last_feedback);
+ x_recv = usecs_div(hcrx->ccid3hcrx_bytes_recv, delta);
tmp1 = (u64)x_recv * (u64)rtt;
do_div(tmp1,10000000);
@@ -981,7 +982,7 @@ static void ccid3_hc_rx_packet_recv(struct sock *sk, struct sk_buff *skb)
if (opt_recv->dccpor_timestamp_echo == 0)
break;
p_prev = hcrx->ccid3hcrx_rtt;
- do_gettimeofday(&now);
+ dccp_timestamp(sk, &now);
timeval_sub_usecs(&now, opt_recv->dccpor_timestamp_echo * 10);
r_sample = timeval_usecs(&now);
t_elapsed = opt_recv->dccpor_elapsed_time * 10;
@@ -1013,7 +1014,7 @@ static void ccid3_hc_rx_packet_recv(struct sock *sk, struct sk_buff *skb)
return;
}
- packet = dccp_rx_hist_entry_new(ccid3_rx_hist, opt_recv->dccpor_ndp,
+ packet = dccp_rx_hist_entry_new(ccid3_rx_hist, sk, opt_recv->dccpor_ndp,
skb, SLAB_ATOMIC);
if (packet == NULL) {
ccid3_pr_debug("%s, sk=%p, Not enough mem to add rx packet "
@@ -1045,7 +1046,7 @@ static void ccid3_hc_rx_packet_recv(struct sock *sk, struct sk_buff *skb)
if (ins != 0)
break;
- do_gettimeofday(&now);
+ dccp_timestamp(sk, &now);
if (timeval_delta(&now, &hcrx->ccid3hcrx_tstamp_last_ack) >=
hcrx->ccid3hcrx_rtt) {
hcrx->ccid3hcrx_tstamp_last_ack = now;
@@ -1100,7 +1101,7 @@ static int ccid3_hc_rx_init(struct sock *sk)
hcrx->ccid3hcrx_state = TFRC_RSTATE_NO_DATA;
INIT_LIST_HEAD(&hcrx->ccid3hcrx_hist);
INIT_LIST_HEAD(&hcrx->ccid3hcrx_li_hist);
- do_gettimeofday(&hcrx->ccid3hcrx_tstamp_last_ack);
+ dccp_timestamp(sk, &hcrx->ccid3hcrx_tstamp_last_ack);
hcrx->ccid3hcrx_tstamp_last_feedback = hcrx->ccid3hcrx_tstamp_last_ack;
hcrx->ccid3hcrx_rtt = 5000; /* XXX 5ms for now... */
return 0;
diff --git a/net/dccp/ccids/ccid3.h b/net/dccp/ccids/ccid3.h
index ee8cbac..58be612 100644
--- a/net/dccp/ccids/ccid3.h
+++ b/net/dccp/ccids/ccid3.h
@@ -115,7 +115,7 @@ struct ccid3_hc_rx_sock {
u64 ccid3hcrx_seqno_last_counter:48,
ccid3hcrx_state:8,
ccid3hcrx_last_counter:4;
- unsigned long ccid3hcrx_rtt;
+ u32 ccid3hcrx_rtt;
u32 ccid3hcrx_p;
u32 ccid3hcrx_bytes_recv;
struct timeval ccid3hcrx_tstamp_last_feedback;
diff --git a/net/dccp/ccids/lib/packet_history.h b/net/dccp/ccids/lib/packet_history.h
index fb90a91..b375ebd 100644
--- a/net/dccp/ccids/lib/packet_history.h
+++ b/net/dccp/ccids/lib/packet_history.h
@@ -134,6 +134,7 @@ static inline struct dccp_tx_hist_entry *
static inline struct dccp_rx_hist_entry *
dccp_rx_hist_entry_new(struct dccp_rx_hist *hist,
+ const struct sock *sk,
const u32 ndp,
const struct sk_buff *skb,
const unsigned int __nocast prio)
@@ -148,7 +149,7 @@ static inline struct dccp_rx_hist_entry *
entry->dccphrx_ccval = dh->dccph_ccval;
entry->dccphrx_type = dh->dccph_type;
entry->dccphrx_ndp = ndp;
- do_gettimeofday(&(entry->dccphrx_tstamp));
+ dccp_timestamp(sk, &entry->dccphrx_tstamp);
}
return entry;
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