xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

[TFRC]: Hide tx history details from the CCIDs

Browse Source 
Based on a previous patch by Gerrit Renker.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Arnaldo Carvalho de Melo
2007-11-29 22:47:15 -02:00
committed by David S. Miller
parent 95bdfccb2b
commit 9108d5f4b2
3 changed files with 41 additions and 28 deletions
Download Patch File Download Diff File Expand all files Collapse all files

19
net/dccp/ccids/ccid3.c
View File

@@ -399,7 +399,6 @@ static void ccid3_hc_tx_packet_recv(struct sock *sk, struct sk_buff *skb)
{
struct ccid3_hc_tx_sock *hctx = ccid3_hc_tx_sk(sk);
struct ccid3_options_received *opt_recv;
struct tfrc_tx_hist_entry *packet;
ktime_t now;
unsigned long t_nfb;
u32 pinv, r_sample;
@@ -414,19 +413,17 @@ static void ccid3_hc_tx_packet_recv(struct sock *sk, struct sk_buff *skb)
switch (hctx->ccid3hctx_state) {
case TFRC_SSTATE_NO_FBACK:
case TFRC_SSTATE_FBACK:
now = ktime_get_real();
/* estimate RTT from history if ACK number is valid */
packet = tfrc_tx_hist_find_entry(hctx->ccid3hctx_hist,
DCCP_SKB_CB(skb)->dccpd_ack_seq);
if (packet == NULL) {
r_sample = tfrc_tx_hist_rtt(hctx->ccid3hctx_hist,
DCCP_SKB_CB(skb)->dccpd_ack_seq, now);
if (r_sample == 0) {
DCCP_WARN("%s(%p): %s with bogus ACK-%llu\n", dccp_role(sk), sk,
dccp_packet_name(DCCP_SKB_CB(skb)->dccpd_type),
(unsigned long long)DCCP_SKB_CB(skb)->dccpd_ack_seq);
return;
}
/*
* Garbage-collect older (irrelevant) entries
*/
tfrc_tx_hist_purge(&packet->next);
/* Update receive rate in units of 64 * bytes/second */
hctx->ccid3hctx_x_recv = opt_recv->ccid3or_receive_rate;
@@ -438,12 +435,10 @@ static void ccid3_hc_tx_packet_recv(struct sock *sk, struct sk_buff *skb)
hctx->ccid3hctx_p = 0;
else /* can not exceed 100% */
hctx->ccid3hctx_p = 1000000 / pinv;
now = ktime_get_real();
/*
* Calculate new RTT sample and update moving average
* Validate new RTT sample and update moving average
*/
r_sample = dccp_sample_rtt(sk, ktime_us_delta(now, packet->stamp));
r_sample = dccp_sample_rtt(sk, r_sample);
hctx->ccid3hctx_rtt = tfrc_ewma(hctx->ccid3hctx_rtt, r_sample, 9);
if (hctx->ccid3hctx_state == TFRC_SSTATE_NO_FBACK) {