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

sctp: remove prsctp_param from sctp_chunk

Browse Source 
Now sctp uses chunk->prsctp_param to save the prsctp param for all the
prsctp polices, we didn't need to introduce prsctp_param to sctp_chunk.
We can just use chunk->sinfo.sinfo_timetolive for RTX and BUF polices,
and reuse msg->expires_at for TTL policy, as the prsctp polices and old
expires policy are mutual exclusive.

This patch is to remove prsctp_param from sctp_chunk, and reuse msg's
expires_at for TTL and chunk's sinfo.sinfo_timetolive for RTX and BUF
polices.

Note that sctp can't use chunk's sinfo.sinfo_timetolive for TTL policy,
as it needs a u64 variables to save the expires_at time.

This one also fixes the "netperf-Throughput_Mbps -37.2% regression"
issue.

Fixes: a6c2f79287 ("sctp: implement prsctp TTL policy")
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Xin Long
2016-09-29 02:37:27 +08:00
committed by David S. Miller
parent 73dca124cd
commit 0605483f6a
4 changed files with 9 additions and 26 deletions
Download Patch File Download Diff File Expand all files Collapse all files

9
net/sctp/chunk.c
View File

@@ -179,6 +179,11 @@ struct sctp_datamsg *sctp_datamsg_from_user(struct sctp_association *asoc,
msg, msg->expires_at, jiffies);
}
if (asoc->prsctp_enable &&
SCTP_PR_TTL_ENABLED(sinfo->sinfo_flags))
msg->expires_at =
jiffies + msecs_to_jiffies(sinfo->sinfo_timetolive);
/* This is the biggest possible DATA chunk that can fit into
* the packet
*/
@@ -349,14 +354,14 @@ int sctp_chunk_abandoned(struct sctp_chunk *chunk)
}
if (SCTP_PR_TTL_ENABLED(chunk->sinfo.sinfo_flags) &&
time_after(jiffies, chunk->prsctp_param)) {
time_after(jiffies, chunk->msg->expires_at)) {
if (chunk->sent_count)
chunk->asoc->abandoned_sent[SCTP_PR_INDEX(TTL)]++;
else
chunk->asoc->abandoned_unsent[SCTP_PR_INDEX(TTL)]++;
return 1;
} else if (SCTP_PR_RTX_ENABLED(chunk->sinfo.sinfo_flags) &&
chunk->sent_count > chunk->prsctp_param) {
chunk->sent_count > chunk->sinfo.sinfo_timetolive) {
chunk->asoc->abandoned_sent[SCTP_PR_INDEX(RTX)]++;
return 1;
}