linux.git/tools/testing/selftests/bpf/test_offload.py, branch v4.19

selftests/bpf: add test for sharing objects between netdevs

2018-07-18T13:10:34+00:00

Add tests for sharing programs and maps between different netdevs.
Use netdevsim's ability to pretend multiple netdevs belong to the
same "ASIC".

Signed-off-by: Jakub Kicinski 
Reviewed-by: Quentin Monnet 
Signed-off-by: Daniel Borkmann

netdevsim: associate bound programs with shared dev

2018-07-18T13:10:33+00:00

Move bound program information from netdevsim to shared sub-object,
as programs will soon be shared between netdevs of the same ASIC.

Signed-off-by: Jakub Kicinski 
Reviewed-by: Quentin Monnet 
Signed-off-by: Daniel Borkmann

selftests/bpf: add test for multiple programs

2018-07-13T18:26:35+00:00

Add tests for having an XDP program attached in the driver and
another one attached in HW simultaneously.

Signed-off-by: Jakub Kicinski 
Reviewed-by: Quentin Monnet 
Signed-off-by: Daniel Borkmann

netdevsim: add support for simultaneous driver and hw XDP

2018-07-13T18:26:35+00:00

Allow netdevsim to accept driver and offload attachment of XDP
BPF programs at the same time.

Signed-off-by: Jakub Kicinski 
Reviewed-by: Quentin Monnet 
Signed-off-by: Daniel Borkmann

xdp: factor out common program/flags handling from drivers

2018-07-13T18:26:35+00:00

Basic operations drivers perform during xdp setup and query can
be moved to helpers in the core.  Encapsulate program and flags
into a structure and add helpers.  Note that the structure is
intended as the "main" program information source in the driver.
Most drivers will additionally place the program pointer in their
fast path or ring structures.

The helpers don't have a huge impact now, but they will
decrease the code duplication when programs can be installed
in HW and driver at the same time.  Encapsulating the basic
operations in helpers will hopefully also reduce the number
of changes to drivers which adopt them.

Helpers could really be static inline, but they depend on
definition of struct netdev_bpf which means they'd have
to be placed in netdevice.h, an already 4500 line header.

Signed-off-by: Jakub Kicinski 
Reviewed-by: Quentin Monnet 
Signed-off-by: Daniel Borkmann

selftests/bpf: add Error: prefix in check_extack helper

2018-07-11T20:13:33+00:00

Currently the test only checks errors, not warnings, so save typing
and prefix the extack messages with "Error:" inside the check helper.

Signed-off-by: Jakub Kicinski 
Reviewed-by: Quentin Monnet 
Signed-off-by: Daniel Borkmann

selftests/bpf: remove duplicated word from test offloads

2018-07-11T20:13:33+00:00

Trivial removal of duplicated "mode" in error message.

Signed-off-by: Jakub Kicinski 
Reviewed-by: Quentin Monnet 
Signed-off-by: Daniel Borkmann

selftests/bpf: test offloads even with BPF programs present

2018-06-15T01:13:17+00:00

Modern distroes increasingly make use of BPF programs.  Default
Ubuntu 18.04 installation boots with a number of cgroup_skb
programs loaded.

test_offloads.py tries to check if programs and maps are not
leaked on error paths by confirming the list of programs on the
system is empty between tests.

Since we can no longer expect the system to have no BPF objects
at boot try to remember the programs and maps present at the start,
and skip those when scanning the system.

Signed-off-by: Jakub Kicinski 
Reviewed-by: Quentin Monnet 
Signed-off-by: Daniel Borkmann

selftests/bpf: check for chain-non-0 extack message

2018-01-26T02:23:09+00:00

Make sure netdevsim doesn't allow offload of chains other than 0,
and that it reports the expected extack message.

Signed-off-by: Jakub Kicinski 
Signed-off-by: David S. Miller

selftests/bpf: check for spurious extacks from the driver

2018-01-26T02:23:09+00:00

Drivers should not report errors when offload is not forced.
Check stdout and stderr for familiar messages when with no
skip flags and with skip_hw.  Check for add, replace, and
destroy.

Signed-off-by: Jakub Kicinski 
Reviewed-by: Simon Horman 
Signed-off-by: David S. Miller