[Bug 242890] vmxnet3 problem when RSS option is configured

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=242890

--- Comment #4 from commit-hook at freebsd.org ---
A commit references this bug:

Author: avg
Date: Thu Jan 23 11:05:03 UTC 2020
New revision: 357042
URL: https://svnweb.freebsd.org/changeset/base/357042

Log:
  vmxnet3: add support for RSS kernel option

  We observe at least one problem: if a UDP socket is connect(2)-ed, then a
  received packet that matches the connection cannot be matched to the
  corresponding PCB because of an incorrect flow ID.  That was oberved for DNS
  requests from the libc resolver.  We got this problem because FreeBSD
  r343291 enabled code that can set rsstype of received packets to values
  other than M_HASHTYPE_OPAQUE_HASH.  Earlier that code was under 'ifdef
  notyet'.

  The essence of this change is to use the system-wide RSS key instead of
  some historic hardcoded key when the software RSS is enabled and it is
  configured to use Toeplitz algorithm (the default).
  In all other cases, the driver reports the opaque hash type for received
  packets while still using Toeplitz algorithm with the internal key.

  PR:           242890
  Reviewed by:  pkelsey
  Sponsored by: Panzura
  Differential Revision: https://reviews.freebsd.org/D23147

Changes:
  head/sys/dev/vmware/vmxnet3/if_vmx.c
  head/sys/dev/vmware/vmxnet3/if_vmxvar.h
  head/sys/modules/vmware/vmxnet3/Makefile

-- 
You are receiving this mail because:
You are the assignee for the bug.