[19.04 FEAT] qeth: Performance Improvements

Bug #1814899 reported by bugproxy on 2019-02-06
This bug affects 1 person
Affects Status Importance Assigned to Milestone
Ubuntu on IBM z Systems
linux (Ubuntu)
Skipper Bug Screeners

Bug Description

Improved performance for OSA and Hipersockets via general code improvements and and exploitation of further kernel infrastructure.

Business Case:
Improved network performance for Linux on Z

Available with kernel 4.19:
      s390/qeth: various buffer management cleanups [3b346c1814]
      s390/qeth: remove unused buffer->aob pointer [f67a43a73b]
      s390/qeth: fine-tune RX modesetting [9aa17df3b8]
      s390/qeth: clean up Output Queue selection [86c0cdb9e0]
      s390/qeth: consolidate ccwgroup driver definition [6d8769abe4]
      s390/qeth: clean up exported symbols [09960b3a0a]
      s390/qeth: increase GSO max size for eligible L3 devices [371a1e7a07]
      s390/qeth: add a L3 xmit wrapper [ea1d4a0c7f]
      s390/qeth: speed-up L3 IQD xmit [a647a02512]
      s390/qeth: speed-up IPv4 OSA xmit [fb321f25e5]
      s390/qeth: fix race in used-buffer accounting [a702349a40]
      s390/qeth: reset layer2 attribute on layer switch [70551dc46f]
      s390/qeth: remove redundant netif_carrier_ok() checks [addc5ee872]
      s390/qeth: allocate netdevice early [d3d1b205e8]
      s390/qeth: don't cache HW port number [92d2720969]
      s390/qeth: simplify max MTU handling [8ce7a9e064]
      s390/qeth: use core MTU range checking [72f219da79]
      s390/qeth: add statistics for consumed buffer elements [d2a274b25b]
      s390/qeth: merge linearize-check into HW header construction [ba86ceee9d]
      s390/qeth: add support for constrained HW headers [a7c2f4a332]
      s390/qeth: speed up L2 IQD xmit [5f89eca577]
      s390/qeth: extract helper for MPC protocol type [73657a3e5b]
      s390/qeth: reduce hard-coded access to ccw channels [750b162598]
      s390/qeth: use qeth_setup_ccw() to set up all CCWs [45ca2fd646]
      s390/qeth: do basic setup for data channel [24142fd8d8]
      s390/qeth: clean up card initialization [95f4d8b75a]
      s390/qeth: don't restrict qeth_card to DMA memory [f15cdaf237]
      s390/qeth: switch on SG by default for IQD devices [04db741d0d]

bugproxy (bugproxy) on 2019-02-06
tags: added: architecture-s39064 bugnameltc-175310 severity-high targetmilestone-inin1904
Changed in ubuntu:
assignee: nobody → Skipper Bug Screeners (skipper-screen-team)
affects: ubuntu → linux (Ubuntu)
Frank Heimes (frank-heimes) wrote :

I'm setting this to Fix Released, since 4.19 recently landed in the disco release pocket.

Changed in linux (Ubuntu):
status: New → Fix Released
Changed in ubuntu-z-systems:
status: New → Fix Released

------- Comment From <email address hidden> 2019-02-07 10:58 EDT-------
IBM bugzilla status-> closed, Fix Released with disco

information type: Private → Public
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