kernel/tools/testing/selftests/bpf/xsk_prereqs.sh, branch linux-6.2.y

selftests, xsk: Rename AF_XDP testing app

2022-07-08T12:22:15Z

Recently, xsk part of libbpf was moved to selftests/bpf directory and lives on its own because there is an AF_XDP testing application that needs it called xdpxceiver. That name makes it a bit hard to indicate who maintains it as there are other XDP samples in there, whereas this one is strictly about AF_XDP. Do s/xdpxceiver/xskxceiver so that it will be easier to figure out who maintains it. A follow-up patch will correct MAINTAINERS file. Signed-off-by: Maciej Fijalkowski Signed-off-by: Daniel Borkmann Link: https://lore.kernel.org/bpf/20220707111613.49031-2-maciej.fijalkowski@intel.com

selftests: xsk: fix reporting of failed tests

2022-05-11T15:03:15Z

Fix the reporting of failed tests as it was broken in several ways. First, a failed test was reported as both failed and passed messing up the count. Second, tests were not aborted after a failure and could generate more "failures" messing up the count even more. Third, the failure reporting from the application to the shell script was wrong. It always reported pass. And finally, the handling of the failures in the launch script was not correct. Correct all this by propagating the failure up through the function calls to a calling function that can abort the test. A receiver or sender thread will mark the new variable in the test spec called fail, if a test has failed. This is then picked up by the main thread when everyone else has exited and this is then marked and propagated up to the calling script. Also add a summary function in the calling script so that a user does not have to go through the sub tests to see if something has failed. Signed-off-by: Magnus Karlsson Link: https://lore.kernel.org/r/20220510115604.8717-5-magnus.karlsson@gmail.com Signed-off-by: Alexei Starovoitov

selftests: xsk: run all tests for busy-poll

2022-05-11T15:03:15Z

Execute all xsk selftests for busy-poll mode too. Currently they were only run for the standard interrupt driven softirq mode. Replace the unused option queue-id with the new option busy-poll. Signed-off-by: Magnus Karlsson Link: https://lore.kernel.org/r/20220510115604.8717-4-magnus.karlsson@gmail.com Signed-off-by: Alexei Starovoitov

selftests: xsk: cleanup bash scripts

2022-05-11T15:03:15Z

Remove the spec-file that is not used any longer from the shell scripts. Also remove an unused option. Signed-off-by: Magnus Karlsson Link: https://lore.kernel.org/r/20220510115604.8717-2-magnus.karlsson@gmail.com Signed-off-by: Alexei Starovoitov

selftests: xsk: Remove the num_tx_packets option

2021-08-25T19:22:00Z

Remove the number of tx packet option as this should be decided by the test itself. Also change the number of packets to be sent to 4096 speeding up the execution. Signed-off-by: Magnus Karlsson Signed-off-by: Alexei Starovoitov Link: https://lore.kernel.org/bpf/20210825093722.10219-3-magnus.karlsson@gmail.com

selftests: xsk: Remove color mode

2021-08-25T19:21:59Z

Remove color mode since it does not add any value and having less code means less maintenance which is a good thing. Signed-off-by: Magnus Karlsson Signed-off-by: Alexei Starovoitov Link: https://lore.kernel.org/bpf/20210825093722.10219-2-magnus.karlsson@gmail.com

selftests/bpf: Restructure xsk selftests

2021-02-26T20:08:48Z

Prior to this commit individual xsk tests were launched from the shell script 'test_xsk.sh'. When adding a new test type, two new test configurations had to be added to this file - one for each of the supported XDP 'modes' (skb or drv). Should zero copy support be added to the xsk selftest framework in the future, three new test configurations would need to be added for each new test type. Each new test type also typically requires new CLI arguments for the xdpxceiver program. This commit aims to reduce the overhead of adding new tests, by launching the test configurations from within the xdpxceiver program itself, using simple loops. Every test is run every time the C program is executed. Many of the CLI arguments can be removed as a result. Signed-off-by: Ciara Loftus Signed-off-by: Alexei Starovoitov Reviewed-by: Maciej Fijalkowski Link: https://lore.kernel.org/bpf/20210223162304.7450-4-ciara.loftus@intel.com

selftests/bpf: Expose and rename debug argument

2021-02-26T20:08:48Z

Launching xdpxceiver with -D enables what was formerly know as 'debug' mode. Rename this mode to 'dump-pkts' as it better describes the behavior enabled by the option. New usage: ./xdpxceiver .. -D or ./xdpxceiver .. --dump-pkts Also make it possible to pass this flag to the app via the test_xsk.sh shell script like so: ./test_xsk.sh -D Signed-off-by: Ciara Loftus Signed-off-by: Alexei Starovoitov Link: https://lore.kernel.org/bpf/20210223162304.7450-3-ciara.loftus@intel.com

selftest/bpf: Make xsk tests less verbose

2021-02-26T20:08:48Z

Make the xsk tests less verbose by only printing the essentials. Currently, it is hard to see if the tests passed or not due to all the printouts. Move the extra printouts to a verbose option, if further debugging is needed when a problem arises. To run the xsk tests with verbose output: ./test_xsk.sh -v Signed-off-by: Magnus Karlsson Signed-off-by: Ciara Loftus Signed-off-by: Alexei Starovoitov Acked-by: Maciej Fijalkowski Link: https://lore.kernel.org/bpf/20210223162304.7450-2-ciara.loftus@intel.com

selftests/bpf: Xsk selftests - SKB POLL, NOPOLL

2020-12-09T15:44:45Z

Adds following tests: 1. AF_XDP SKB mode Generic mode XDP is driver independent, used when the driver does not have support for XDP. Works on any netdevice using sockets and generic XDP path. XDP hook from netif_receive_skb(). a. nopoll - soft-irq processing b. poll - using poll() syscall Signed-off-by: Weqaar Janjua Signed-off-by: Daniel Borkmann Tested-by: Yonghong Song Acked-by: Björn Töpel Link: https://lore.kernel.org/bpf/20201207215333.11586-3-weqaar.a.janjua@intel.com