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

net: sched: pie: add more cases to auto-tune alpha and beta

Browse Source 
The current implementation scales the local alpha and beta
variables in the calculate_probability function by the same
amount for all values of drop probability below 1%.

RFC 8033 suggests using additional cases for auto-tuning
alpha and beta when the drop probability is less than 1%.

In order to add more auto-tuning cases, MAX_PROB must be
scaled by u64 instead of u32 to prevent underflow when
scaling the local alpha and beta variables in the
calculate_probability function.

Signed-off-by: Mohit P. Tahiliani <tahiliani@nitk.edu.in>
Signed-off-by: Dhaval Khandla <dhavaljkhandla26@gmail.com>
Signed-off-by: Hrishikesh Hiraskar <hrishihiraskar@gmail.com>
Signed-off-by: Manish Kumar B <bmanish15597@gmail.com>
Signed-off-by: Sachin D. Patil <sdp.sachin@gmail.com>
Signed-off-by: Leslie Monis <lesliemonis@gmail.com>
Acked-by: Dave Taht <dave.taht@gmail.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Mohit P. Tahiliani
2019-02-26 00:39:59 +05:30
committed by David S. Miller
parent 30a92ad703
commit 3f7ae5f3dc
2 changed files with 33 additions and 34 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
include/uapi/linux/pkt_sched.h
View File

@@ -954,7 +954,7 @@ enum {
#define TCA_PIE_MAX (__TCA_PIE_MAX - 1)
struct tc_pie_xstats {
__u32 prob; /* current probability */
__u64 prob; /* current probability */
__u32 delay; /* current delay in ms */
__u32 avg_dq_rate; /* current average dq_rate in bits/pie_time */
__u32 packets_in; /* total number of packets enqueued */