kernel/linux.git/tools/bpf/Makefile, branch v6.6.131

tools bpf_jit_disasm: Don't display disassembler-four-args feature test

2022-08-01T18:31:51+00:00

The feature check does not seem important enough to display. Suggested-by: Jiri Olsa Signed-off-by: Andres Freund Acked-by: Quentin Monnet Cc: Alexei Starovoitov Cc: Ben Hutchings Cc: Daniel Borkmann Cc: Quentin Monnet Cc: Sedat Dilek Cc: bpf@vger.kernel.org Link: http://lore.kernel.org/lkml/20220622181918.ykrs5rsnmx3og4sv@alap3.anarazel.de Link: https://lore.kernel.org/r/20220801013834.156015-7-andres@anarazel.de Signed-off-by: Arnaldo Carvalho de Melo

tools bpf_jit_disasm: Fix compilation error with new binutils

2022-08-01T18:30:48+00:00

binutils changed the signature of init_disassemble_info(), which now causes compilation to fail for tools/bpf/bpf_jit_disasm.c, e.g. on debian unstable. Relevant binutils commit: https://sourceware.org/git/?p=binutils-gdb.git;a=commit;h=60a3da00bd5407f07 Wire up the feature test and switch to init_disassemble_info_compat(), which were introduced in prior commits, fixing the compilation failure. I verified that bpf_jit_disasm can still disassemble bpf programs, both with the old and new dis-asm.h API. With old binutils there's no change in output before/after this patch. When comparing the output from old binutils (2.35) to new bintuils with the patch (upstream snapshot) there are a few output differences, but they are unrelated to this patch. An example hunk is: f4: mov %r14,%rsi f7: mov %r15,%rdx fa: mov $0x2a,%ecx - ff: callq 0xffffffffea8c4988 + ff: call 0xffffffffea8c4988 104: test %rax,%rax 107: jge 0x0000000000000110 109: xor %eax,%eax - 10b: jmpq 0x0000000000000073 + 10b: jmp 0x0000000000000073 110: cmp $0x16,%rax However, I had to use an older kernel to generate the bpf_jit_enabled = 2 output, as that has been broken since 5.18 / 1022a5498f6f745c ("bpf, x86_64: Use bpf_jit_binary_pack_alloc"). https://lore.kernel.org/20220703030210.pmjft7qc2eajzi6c@alap3.anarazel.de Signed-off-by: Andres Freund Acked-by: Quentin Monnet Cc: Alexei Starovoitov Cc: Ben Hutchings Cc: Daniel Borkmann Cc: Jiri Olsa Cc: Quentin Monnet Cc: Sedat Dilek Cc: bpf@vger.kernel.org Link: http://lore.kernel.org/lkml/20220622181918.ykrs5rsnmx3og4sv@alap3.anarazel.de Link: https://lore.kernel.org/r/20220801013834.156015-6-andres@anarazel.de Signed-off-by: Arnaldo Carvalho de Melo

tools: bpf: Fix error in 'make -C tools/ bpf_install'

2021-07-07T21:06:38+00:00

make[2]: *** No rule to make target 'install'. Stop. make[1]: *** [Makefile:122: runqslower_install] Error 2 make: *** [Makefile:116: bpf_install] Error 2 There is no rule for target 'install' in tools/bpf/runqslower/Makefile, and there is no need to install it, so just remove 'runqslower_install'. Fixes: 9c01546d26d2 ("tools/bpf: Add runqslower tool to tools/bpf") Signed-off-by: Wei Li Signed-off-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/20210628030409.3459095-1-liwei391@huawei.com

tools/bpf: build: Make sure resolve_btfids cleans up after itself

2020-09-01T16:04:15+00:00

The new resolve_btfids tool did not clean up the feature detection folder on 'make clean', and also was not called properly from the clean rule in tools/make/ folder on its 'make clean'. This lead to stale objects being left around, which could cause feature detection to fail on subsequent builds. Fixes: fbbb68de80a4 ("bpf: Add resolve_btfids tool to resolve BTF IDs in ELF object") Signed-off-by: Toke Høiland-Jørgensen Signed-off-by: Daniel Borkmann Acked-by: Jiri Olsa Link: https://lore.kernel.org/bpf/20200901144343.179552-1-toke@redhat.com

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

2020-08-06T03:13:21+00:00

Pull networking updates from David Miller: 1) Support 6Ghz band in ath11k driver, from Rajkumar Manoharan. 2) Support UDP segmentation in code TSO code, from Eric Dumazet. 3) Allow flashing different flash images in cxgb4 driver, from Vishal Kulkarni. 4) Add drop frames counter and flow status to tc flower offloading, from Po Liu. 5) Support n-tuple filters in cxgb4, from Vishal Kulkarni. 6) Various new indirect call avoidance, from Eric Dumazet and Brian Vazquez. 7) Fix BPF verifier failures on 32-bit pointer arithmetic, from Yonghong Song. 8) Support querying and setting hardware address of a port function via devlink, use this in mlx5, from Parav Pandit. 9) Support hw ipsec offload on bonding slaves, from Jarod Wilson. 10) Switch qca8k driver over to phylink, from Jonathan McDowell. 11) In bpftool, show list of processes holding BPF FD references to maps, programs, links, and btf objects. From Andrii Nakryiko. 12) Several conversions over to generic power management, from Vaibhav Gupta. 13) Add support for SO_KEEPALIVE et al. to bpf_setsockopt(), from Dmitry Yakunin. 14) Various https url conversions, from Alexander A. Klimov. 15) Timestamping and PHC support for mscc PHY driver, from Antoine Tenart. 16) Support bpf iterating over tcp and udp sockets, from Yonghong Song. 17) Support 5GBASE-T i40e NICs, from Aleksandr Loktionov. 18) Add kTLS RX HW offload support to mlx5e, from Tariq Toukan. 19) Fix the ->ndo_start_xmit() return type to be netdev_tx_t in several drivers. From Luc Van Oostenryck. 20) XDP support for xen-netfront, from Denis Kirjanov. 21) Support receive buffer autotuning in MPTCP, from Florian Westphal. 22) Support EF100 chip in sfc driver, from Edward Cree. 23) Add XDP support to mvpp2 driver, from Matteo Croce. 24) Support MPTCP in sock_diag, from Paolo Abeni. 25) Commonize UDP tunnel offloading code by creating udp_tunnel_nic infrastructure, from Jakub Kicinski. 26) Several pci_ --> dma_ API conversions, from Christophe JAILLET. 27) Add FLOW_ACTION_POLICE support to mlxsw, from Ido Schimmel. 28) Add SK_LOOKUP bpf program type, from Jakub Sitnicki. 29) Refactor a lot of networking socket option handling code in order to avoid set_fs() calls, from Christoph Hellwig. 30) Add rfc4884 support to icmp code, from Willem de Bruijn. 31) Support TBF offload in dpaa2-eth driver, from Ioana Ciornei. 32) Support XDP_REDIRECT in qede driver, from Alexander Lobakin. 33) Support PCI relaxed ordering in mlx5 driver, from Aya Levin. 34) Support TCP syncookies in MPTCP, from Flowian Westphal. 35) Fix several tricky cases of PMTU handling wrt. briding, from Stefano Brivio. * git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (2056 commits) net: thunderx: initialize VF's mailbox mutex before first usage usb: hso: remove bogus check for EINPROGRESS usb: hso: no complaint about kmalloc failure hso: fix bailout in error case of probe ip_tunnel_core: Fix build for archs without _HAVE_ARCH_IPV6_CSUM selftests/net: relax cpu affinity requirement in msg_zerocopy test mptcp: be careful on subflow creation selftests: rtnetlink: make kci_test_encap() return sub-test result selftests: rtnetlink: correct the final return value for the test net: dsa: sja1105: use detected device id instead of DT one on mismatch tipc: set ub->ifindex for local ipv6 address ipv6: add ipv6_dev_find() net: openvswitch: silence suspicious RCU usage warning Revert "vxlan: fix tos value before xmit" ptp: only allow phase values lower than 1 period farsync: switch from 'pci_' to 'dma_' API wan: wanxl: switch from 'pci_' to 'dma_' API hv_netvsc: do not use VF device if link is down dpaa2-eth: Fix passing zero to 'PTR_ERR' warning net: macb: Properly handle phylink on at91sam9x ...

tools: bpf: Use local copy of headers including uapi/linux/filter.h

2020-07-21T09:50:35+00:00

Pulling header files directly out of the kernel sources for inclusion in userspace programs is highly error prone, not least because it bypasses the kbuild infrastructure entirely and so may end up referencing other header files that have not been generated. Subsequent patches will cause compiler.h to pull in the ungenerated asm/rwonce.h file via filter.h, breaking the build for tools/bpf: | $ make -C tools/bpf | make: Entering directory '/linux/tools/bpf' | CC bpf_jit_disasm.o | LINK bpf_jit_disasm | CC bpf_dbg.o | In file included from /linux/include/uapi/linux/filter.h:9, | from /linux/tools/bpf/bpf_dbg.c:41: | /linux/include/linux/compiler.h:247:10: fatal error: asm/rwonce.h: No such file or directory | #include | ^~~~~~~~~~~~~~ | compilation terminated. | make: *** [Makefile:61: bpf_dbg.o] Error 1 | make: Leaving directory '/linux/tools/bpf' Take a copy of the installed version of linux/filter.h (i.e. the one created by the 'headers_install' target) into tools/include/uapi/linux/ and adjust the BPF tool Makefile to reference the local include directories instead of those in the main source tree. Cc: Masahiro Yamada Acked-by: Peter Zijlstra (Intel) Acked-by: Alexei Starovoitov Suggested-by: Daniel Borkmann Reported-by: Xiao Yang Signed-off-by: Will Deacon

bpf: Compile resolve_btfids tool at kernel compilation start

2020-07-13T17:42:02+00:00

The resolve_btfids tool will be used during the vmlinux linking, so it's necessary it's ready for it. Signed-off-by: Jiri Olsa Signed-off-by: Alexei Starovoitov Tested-by: Andrii Nakryiko Acked-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/20200711215329.41165-3-jolsa@kernel.org

tools, bpf: Do not force gcc as CC

2020-06-10T11:40:04+00:00

This allows transparent cross-compilation with CROSS_COMPILE by relying on 7ed1c1901fe5 ("tools: fix cross-compile var clobbering"). Same change was applied to tools/bpf/bpftool/Makefile in 9e88b9312acb ("tools: bpftool: do not force gcc as CC"). Signed-off-by: Brett Mastbergen Signed-off-by: Daniel Borkmann Link: https://lore.kernel.org/bpf/20200609213506.3299-1-brett.mastbergen@gmail.com

tools/bpf: Don't use $(COMPILE.c)

2020-06-02T20:02:38+00:00

When using make kselftest TARGETS=bpf, tools/bpf is built with MAKEFLAGS=rR, which causes $(COMPILE.c) to be undefined, which in turn causes the build to fail with CC kselftest/bpf/tools/build/bpftool/map_perf_ring.o /bin/sh: 1: -MMD: not found Fix by using $(CC) $(CFLAGS) -c instead of $(COMPILE.c). Signed-off-by: Ilya Leoshkevich Signed-off-by: Daniel Borkmann Link: https://lore.kernel.org/bpf/20200602175649.2501580-2-iii@linux.ibm.com

tools/bpf: Add runqslower tool to tools/bpf

2020-01-14T01:48:13+00:00

Convert one of BCC tools (runqslower [0]) to BPF CO-RE + libbpf. It matches its BCC-based counterpart 1-to-1, supporting all the same parameters and functionality. runqslower tool utilizes BPF skeleton, auto-generated from BPF object file, as well as memory-mapped interface to global (read-only, in this case) data. Its Makefile also ensures auto-generation of "relocatable" vmlinux.h, which is necessary for BTF-typed raw tracepoints with direct memory access. [0] https://github.com/iovisor/bcc/blob/11bf5d02c895df9646c117c713082eb192825293/tools/runqslower.py Signed-off-by: Andrii Nakryiko Signed-off-by: Alexei Starovoitov Link: https://lore.kernel.org/bpf/20200113073143.1779940-6-andriin@fb.com