kernel.git/tools/testing/selftests/bpf/Makefile, branch linux-5.0.y

selftests/bpf: suppress readelf stderr when probing for BTF support

2019-04-05T20:34:48Z

[ Upstream commit 2f0921262ba943fe9d9f59037a033927d8c4789b ] Before: $ make -s -C tools/testing/selftests/bpf readelf: Error: Missing knowledge of 32-bit reloc types used in DWARF sections of machine number 247 readelf: Warning: unable to apply unsupported reloc type 10 to section .debug_info readelf: Warning: unable to apply unsupported reloc type 1 to section .debug_info readelf: Warning: unable to apply unsupported reloc type 10 to section .debug_info After: $ make -s -C tools/testing/selftests/bpf v2: * use llvm-readelf instead of redirecting binutils' readelf stderr to /dev/null Signed-off-by: Stanislav Fomichev Acked-by: Song Liu Signed-off-by: Daniel Borkmann Signed-off-by: Sasha Levin

selftests/bpf: install with_tunnels.sh for test_flow_dissector.sh

2019-01-15T19:53:30Z

test_flow_dissector.sh depends on both with_addr.sh and with_tunnels.sh However, we install only with_addr.sh. Add with_tunnels.sh to TEST_PROGS_EXTENDED to make sure it gets installed as well. Tested with: make TARGETS=bpf install INSTALL_PATH=$PWD/x Fixes: ef4ab8447aa26 ("selftests: bpf: install script with_addr.sh") Signed-off-by: Stanislav Fomichev Signed-off-by: Daniel Borkmann

selftests: bpf: install files tcp_(server|client)*.py

2019-01-10T14:56:52Z

When test_tcpbpf_user runs it complains that it can't find files tcp_server.py and tcp_client.py. Rework so that tcp_server.py and tcp_client.py gets installed, added them to the variable TEST_PROGS_EXTENDED. Fixes: d6d4f60c3a09 ("bpf: add selftest for tcpbpf") Signed-off-by: Anders Roxell Signed-off-by: Daniel Borkmann

Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next

2018-11-26T21:08:17Z

Daniel Borkmann says: ==================== pull-request: bpf-next 2018-11-26 The following pull-request contains BPF updates for your *net-next* tree. The main changes are: 1) Extend BTF to support function call types and improve the BPF symbol handling with this info for kallsyms and bpftool program dump to make debugging easier, from Martin and Yonghong. 2) Optimize LPM lookups by making longest_prefix_match() handle multiple bytes at a time, from Eric. 3) Adds support for loading and attaching flow dissector BPF progs from bpftool, from Stanislav. 4) Extend the sk_lookup() helper to be supported from XDP, from Nitin. 5) Enable verifier to support narrow context loads with offset > 0 to adapt to LLVM code generation (currently only offset of 0 was supported). Add test cases as well, from Andrey. 6) Simplify passing device functions for offloaded BPF progs by adding callbacks to bpf_prog_offload_ops instead of ndo_bpf. Also convert nfp and netdevsim to make use of them, from Quentin. 7) Add support for sock_ops based BPF programs to send events to the perf ring-buffer through perf_event_output helper, from Sowmini and Daniel. 8) Add read / write support for skb->tstamp from tc BPF and cg BPF programs to allow for supporting rate-limiting in EDT qdiscs like fq from BPF side, from Vlad. 9) Extend libbpf API to support map in map types and add test cases for it as well to BPF kselftests, from Nikita. 10) Account the maximum packet offset accessed by a BPF program in the verifier and use it for optimizing nfp JIT, from Jiong. 11) Fix error handling regarding kprobe_events in BPF sample loader, from Daniel T. 12) Add support for queue and stack map type in bpftool, from David. ==================== Signed-off-by: David S. Miller

bpf: adding tests for map_in_map helpber in libbpf

2018-11-21T22:33:22Z

adding test/example of bpf_map__set_inner_map_fd usage Signed-off-by: Nikita V. Shirokov Acked-by: Yonghong Song Signed-off-by: Daniel Borkmann

tools/bpf: do not use pahole if clang/llvm can generate BTF sections

2018-11-20T18:54:39Z

Add additional checks in tools/testing/selftests/bpf and samples/bpf such that if clang/llvm compiler can generate BTF sections, do not use pahole. Signed-off-by: Yonghong Song Signed-off-by: Martin KaFai Lau Signed-off-by: Alexei Starovoitov

selftests/bpf: add a test case for sock_ops perf-event notification

2018-11-09T08:40:17Z

This patch provides a tcp_bpf based eBPF sample. The test - ncat(1) as the TCP client program to connect() to a port with the intention of triggerring SYN retransmissions: we first install an iptables DROP rule to make sure ncat SYNs are resent (instead of aborting instantly after a TCP RST) - has a bpf kernel module that sends a perf-event notification for each TCP retransmit, and also tracks the number of such notifications sent in the global_map The test passes when the number of event notifications intercepted in user-space matches the value in the global_map. Signed-off-by: Sowmini Varadhan Signed-off-by: Daniel Borkmann

selftests: add dummy xdp test helper

2018-11-08T00:23:05Z

This trivial XDP program does nothing, but will be used by the next patch to test the GRO path in a net namespace, leveraging the veth XDP implementation. It's added here, despite its 'net' usage, to avoid the duplication of the llc-related makefile boilerplate. rfc v3 -> v1: - move the helper implementation into the bpf directory, don't touch udpgso_bench_rx rfc v2 -> rfc v3: - move 'x' option handling here Signed-off-by: Paolo Abeni Signed-off-by: David S. Miller

selftests/bpf: enable (uncomment) all tests in test_libbpf.sh

2018-11-07T21:20:56Z

libbpf is now able to load successfully test_l4lb_noinline.o and samples/bpf/tracex3_kern.o. For the test_l4lb_noinline, uncomment related tests from test_libbpf.c and remove the associated "TODO". For tracex3_kern.o, instead of loading a program from samples/bpf/ that might not have been compiled at this stage, try loading a program from BPF selftests. Since this test case is about loading a program compiled without the "-target bpf" flag, change the Makefile to compile one program accordingly (instead of passing the flag for compiling all programs). Regarding test_xdp_noinline.o: in its current shape the program fails to load because it provides no version section, but the loader needs one. The test was added to make sure that libbpf could load XDP programs even if they do not provide a version number in a dedicated section. But libbpf is already capable of doing that: in our case loading fails because the loader does not know that this is an XDP program (it does not need to, since it does not attach the program). So trying to load test_xdp_noinline.o does not bring much here: just delete this subtest. For the record, the error message obtained with tracex3_kern.o was fixed by commit e3d91b0ca523 ("tools/libbpf: handle issues with bpf ELF objects containing .eh_frames") I have not been abled to reproduce the "libbpf: incorrect bpf_call opcode" error for test_l4lb_noinline.o, even with the version of libbpf present at the time when test_libbpf.sh and test_libbpf_open.c were created. RFC -> v1: - Compile test_xdp without the "-target bpf" flag, and try to load it instead of ../../samples/bpf/tracex3_kern.o. - Delete test_xdp_noinline.o subtest. Cc: Jesper Dangaard Brouer Signed-off-by: Quentin Monnet Acked-by: Jakub Kicinski Acked-by: Jesper Dangaard Brouer Signed-off-by: Daniel Borkmann

selftests/bpf: add test cases for queue and stack maps

2018-10-19T20:24:31Z

test_maps: Tests that queue/stack maps are behaving correctly even in corner cases test_progs: Tests new ebpf helpers Signed-off-by: Mauricio Vasquez B Acked-by: Song Liu Signed-off-by: Alexei Starovoitov