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Jacob Keller 443ee71ad2 i40e: disallow programming multiple filters with same criteria
Our hardware does not allow situations where two filters might conflict
when matching. Essentially hardware only programs one filter for each
set of matching criteria. We don't support filters with overlapping
input sets, because each flow type can only use a single input set.

Additionally, different flow types will never have overlapping matches,
because of how the hardware parses the flow type before checking
matching criteria.

For this reason, we do not need or use the location number when
programming filters to hardware.

In order to avoid confusing scenarios with filters that match the same
criteria but program the flow to different queues, do not allow multiple
filters that match identical criteria to be programmed.

This ensures that we avoid odd scenarios when deleting filters, and when
programming new filters that match the same criteria.

Instead, users that wish to update the criteria for a filter must use
the same location id, or must delete all the matching filters first.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2018-01-26 13:23:40 -08:00
arch Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-01-24 23:44:15 -05:00
block
certs
crypto
Documentation Documentation/pktgen: Clearify how-to use pktgen samples 2018-01-24 15:03:36 -05:00
drivers i40e: disallow programming multiple filters with same criteria 2018-01-26 13:23:40 -08:00
firmware
fs Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-01-23 13:51:56 -05:00
include openvswitch: add erspan version I and II support 2018-01-25 21:39:43 -05:00
init
ipc
kernel Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-01-24 23:44:15 -05:00
lib bpf: add couple of test cases for signed extended imms 2018-01-19 18:36:59 -08:00
mm mm, page_vma_mapped: Introduce pfn_in_hpage() 2018-01-22 12:15:57 -08:00
net net/ipv4: Allow send to local broadcast from a socket bound to a VRF 2018-01-25 21:51:31 -05:00
samples samples/bpf: xdp_monitor include cpumap tracepoints in monitoring 2018-01-20 02:10:55 +01:00
scripts
security
sound
tools selftests/bpf: check for chain-non-0 extack message 2018-01-25 21:23:09 -05:00
usr
virt
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-01-24 23:44:15 -05:00
Makefile Linux 4.15-rc9 2018-01-21 13:51:26 -08:00
README

Linux kernel
============

This file was moved to Documentation/admin-guide/README.rst

Please notice that there are several guides for kernel developers and users.
These guides can be rendered in a number of formats, like HTML and PDF.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
See Documentation/00-INDEX for a list of what is contained in each file.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.