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* tools: ynl: Fix genlmsg header encoding formatsDonald Hunter2023-03-231-3/+3
| | | | | | | | | | The pack strings use 'b' signed char for cmd and version but struct genlmsghdr defines them as unsigned char. Use 'B' instead. Fixes: 4e4480e89c47 ("tools: ynl: move the cli and netlink code around") Signed-off-by: Donald Hunter <donald.hunter@gmail.com> Link: https://lore.kernel.org/r/20230319193803.97453-1-donald.hunter@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
* ynl: make the tooling check the licenseJakub Kicinski2023-03-172-6/+15
| | | | | | | | | | | The (only recently documented) expectation is that all specs are under a certain license, but we don't actually enforce it. What's worse we then go ahead and assume the license was right, outputting the expected license into generated files. Fixes: 37d9df224d1e ("ynl: re-license uniformly under GPL-2.0 OR BSD-3-Clause") Reviewed-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
* ynl: broaden the license even moreJakub Kicinski2023-03-171-4/+4
| | | | | | | | | | | | | I relicensed Netlink spec code to GPL-2.0 OR BSD-3-Clause but we still put a slightly different license on the uAPI header than the rest of the code. Use the Linux-syscall-note on all the specs and all generated code. It's moot for kernel code, but should not hurt. This way the licenses match everywhere. Cc: Chuck Lever <chuck.lever@oracle.com> Fixes: 37d9df224d1e ("ynl: re-license uniformly under GPL-2.0 OR BSD-3-Clause") Reviewed-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
* tools: ynl: make definitions optional againJakub Kicinski2023-03-171-1/+2
| | | | | | | | definitions are optional, commit in question breaks cli for ethtool. Fixes: 6517a60b0307 ("tools: ynl: move the enum classes to shared code") Reviewed-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
* tools: ynl: fix get_mask utility routineLorenzo Bianconi2023-03-111-4/+2
| | | | | | | | | Fix get_mask utility routine in order to take into account possible gaps in the elements list. Fixes: be5bea1cc0bf ("net: add basic C code generators for Netlink") Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
* tools: ynl: fix render-max for flags definitionLorenzo Bianconi2023-03-111-3/+8
| | | | | | | | | | Properly manage render-max property for flags definition type introducing mask value and setting it to (last_element << 1) - 1 instead of adding max value set to last_element + 1 Fixes: be5bea1cc0bf ("net: add basic C code generators for Netlink") Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
* tools: ynl: fix enum-as-flags in the generic CLIJakub Kicinski2023-03-092-9/+7
| | | | | | | | | | | | Lorenzo points out that the generic CLI is broken for the netdev family. When I added the support for documentation of enums (and sparse enums) the client script was not updated. It expects the values in enum to be a list of names, now it can also be a dict (YAML object). Reported-by: Lorenzo Bianconi <lorenzo@kernel.org> Fixes: e4b48ed460d3 ("tools: ynl: add a completely generic client") Signed-off-by: Jakub Kicinski <kuba@kernel.org>
* tools: ynl: move the enum classes to shared codeJakub Kicinski2023-03-093-89/+121
| | | | | | | | Move bulk of the EnumSet and EnumEntry code to shared code for reuse by cli. Signed-off-by: Jakub Kicinski <kuba@kernel.org>
* ynl: re-license uniformly under GPL-2.0 OR BSD-3-ClauseJakub Kicinski2023-03-076-8/+9
| | | | | | | | | | | | | | I was intending to make all the Netlink Spec code BSD-3-Clause to ease the adoption but it appears that: - I fumbled the uAPI and used "GPL WITH uAPI note" there - it gives people pause as they expect GPL in the kernel As suggested by Chuck re-license under dual. This gives us benefit of full BSD freedom while fulfilling the broad "kernel is under GPL" expectations. Link: https://lore.kernel.org/all/20230304120108.05dd44c5@kernel.org/ Link: https://lore.kernel.org/r/20230306200457.3903854-1-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
* tools: ynl: use 1 as the default for first entry in attrs/opsJakub Kicinski2023-03-032-5/+8
| | | | | | | | | | | Pretty much all families use value: 1 or reserve as unspec the first entry in attribute set and the first operation. Make this the default. Update documentation (the doc for values of operations just refers back to doc for attrs so updating only attrs). Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* tools: ynl: fully inherit attrs in subsetsJakub Kicinski2023-03-031-8/+15
| | | | | | | | | | To avoid having to repeat the entire definition of an attribute (including the value) use the Attr object from the original set. In fact this is already the documented expectation. Fixes: be5bea1cc0bf ("net: add basic C code generators for Netlink") Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* tools: net: add __pycache__ to gitignoreJakub Kicinski2023-02-241-0/+1
| | | | | | | | | Python will generate its customary cache when running ynl scripts: ?? tools/net/ynl/lib/__pycache__/ Reported-by: Chuck Lever III <chuck.lever@oracle.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
* tools: ynl-gen: re-raise the exception instead of printingJakub Kicinski2023-02-241-3/+1
| | | | | | | | | traceback.print_exception() seems tricky to call, we're missing some argument, so re-raise instead. Reported-by: Chuck Lever III <chuck.lever@oracle.com> Fixes: 3aacf8281336 ("tools: ynl: add an object hierarchy to represent parsed spec") Signed-off-by: Jakub Kicinski <kuba@kernel.org>
* tools: ynl-gen: fix single attribute structs with attr 0 onlyJakub Kicinski2023-02-241-1/+1
| | | | | | | | | | | | | Chuck run into an issue with a single-element attr-set which only has an attr with value of 0. The search for max attr in a struct records attrs with value larger than 0 only (max_val is set to 0 at the start). Adjust the comparison, alternatively max_val could be init'ed to -1. Somehow picking the last attr of a value seems like a good idea in general. Reported-by: Chuck Lever III <chuck.lever@oracle.com> Fixes: be5bea1cc0bf ("net: add basic C code generators for Netlink") Signed-off-by: Jakub Kicinski <kuba@kernel.org>
* tools: net: use python3 explicitlyJakub Kicinski2023-02-012-2/+2
| | | | | | | | The scripts require Python 3 and some distros are dropping Python 2 support. Reported-by: Stanislav Fomichev <sdf@google.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
* tools: ynl: load jsonschema on demandJakub Kicinski2023-02-012-1/+14
| | | | | | | | | | | The CLI script tries to validate jsonschema by default. It's seems better to validate too many times than too few. However, when copying the scripts to random servers having to install jsonschema is tedious. Load jsonschema via importlib, and let the user opt out. Signed-off-by: Jakub Kicinski <kuba@kernel.org>
* tools: ynl: use operation names from spec on the CLIJakub Kicinski2023-02-012-4/+11
| | | | | | | | | | | | | | | | | When I wrote the first version of the Python code I was quite excited that we can generate class methods directly from the spec. Unfortunately we need to use valid identifiers for method names (specifically no dashes are allowed). Don't reuse those names on the CLI, it's much more natural to use the operation names exactly as listed in the spec. Instead of: ./cli --do rings_get use: ./cli --do rings-get Signed-off-by: Jakub Kicinski <kuba@kernel.org>
* tools: ynl: support pretty printing bad attribute namesJakub Kicinski2023-02-011-0/+40
| | | | | | | | | | | | | | | | | | | | | | | | | | One of my favorite features of the Netlink specs is that they make decoding structured extack a ton easier. Implement pretty printing bad attribute names in YNL. For example it will now say: 'bad-attr': '.header.flags' rather than the useless: 'bad-attr-offs': 32 Proof: $ ./cli.py --spec ethtool.yaml --do rings_get \ --json '{"header":{"dev-index":1, "flags":4}}' Netlink error: Invalid argument nl_len = 68 (52) nl_flags = 0x300 nl_type = 2 error: -22 extack: {'msg': 'reserved bit set', 'bad-attr': '.header.flags'} Signed-off-by: Jakub Kicinski <kuba@kernel.org>
* tools: ynl: support multi-attrJakub Kicinski2023-02-011-7/+14
| | | | | | | Ethtool uses mutli-attr, add the support to YNL. Signed-off-by: Jakub Kicinski <kuba@kernel.org>
* tools: ynl: support directional enum-model in CLIJakub Kicinski2023-02-011-4/+4
| | | | | | | | Support families which use different IDs for messages to and from the kernel. Signed-off-by: Jakub Kicinski <kuba@kernel.org>
* tools: ynl: add support for types needed by ethtoolJakub Kicinski2023-02-011-1/+10
| | | | | | | | Ethtool needs support for handful of extra types. It doesn't have the definitions section yet. Signed-off-by: Jakub Kicinski <kuba@kernel.org>
* tools: ynl: use the common YAML loading and validation codeJakub Kicinski2023-02-012-232/+142
| | | | | | | Adapt the common object hierarchy in code gen and CLI. Signed-off-by: Jakub Kicinski <kuba@kernel.org>
* tools: ynl: add an object hierarchy to represent parsed specJakub Kicinski2023-02-012-1/+304
| | | | | | | | | There's a lot of copy and pasting going on between the "cli" and code gen when it comes to representing the parsed spec. Create a library which both can use. Signed-off-by: Jakub Kicinski <kuba@kernel.org>
* tools: ynl: move the cli and netlink code aroundJakub Kicinski2023-02-013-1/+6
| | | | | | | | | | | | | Move the CLI code out of samples/ and the library part of it into tools/net/ynl/lib/. This way we can start sharing some code with the code gen. Initially I thought that code gen is too C-specific to share anything but basic stuff like calculating values for enums can easily be shared. Signed-off-by: Jakub Kicinski <kuba@kernel.org>
* tools: ynl-gen: prevent do / dump reorderingJakub Kicinski2023-02-011-2/+2
| | | | | | | | | | An earlier fix tried to address generated code jumping around one code-gen run to another. Turns out dict()s are already ordered since Python 3.7, the problem is that we iterate over operation modes using a set(). Sets are unordered in Python. Signed-off-by: Jakub Kicinski <kuba@kernel.org>
* tools: ynl: store ops in ordered dict to avoid random orderingJakub Kicinski2023-01-271-1/+2
| | | | | | | | | When rendering code we should walk the ops in the order in which they are declared in the spec. This is both more intuitive and prevents code from jumping around when hashing in the dict changes. Signed-off-by: Jakub Kicinski <kuba@kernel.org>
* tools: ynl: rename ops_list -> msg_listJakub Kicinski2023-01-271-4/+6
| | | | | | | | | | | ops_list contains all the operations, but the main iteration use case is to walk only ops which define attrs. Rename ops_list to msg_list, because now it looks like the contents are the same, just the format is different. While at it convert from tuple to just keys, none of the users care about the name of the op. Signed-off-by: Jakub Kicinski <kuba@kernel.org>
* tools: ynl: support kdocs for flags in code generationJakub Kicinski2023-01-271-17/+20
| | | | | | | | | | | Lorenzo reports that after switching from enum to flags netdev family lost ability to render kdoc (and the enum contents got generally garbled). Combine the flags and enum handling in uAPI handling. Reported-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
* tools: ynl: add a completely generic clientJakub Kicinski2023-01-242-0/+581
| | | | | | | | | | | | | Add a CLI sample which can take in arbitrary request in JSON format, convert it to Netlink and do the inverse for output. It's meant as a development tool primarily and perhaps for selftests which need to tickle netlink in a special way. Acked-by: Stanislav Fomichev <sdf@google.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Paolo Abeni <pabeni@redhat.com>
* net: add basic C code generators for NetlinkJakub Kicinski2023-01-242-0/+2403
| | | | | | | | | | | | | Code generators to turn Netlink specs into C code. I'm definitely not proud of it. The main generator is in Python, there's a bash script to regen all code-gen'ed files in tree after making spec changes. Acked-by: Stanislav Fomichev <sdf@google.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Paolo Abeni <pabeni@redhat.com>
* tools: rename tools/net directory to tools/bpfJakub Kicinski2017-10-056-2656/+0
| | | | | | | | | | | | | | We currently only have BPF tools in the tools/net directory. We are about to add more BPF tools there, not necessarily networking related, rename the directory and related Makefile targets to bpf. Suggested-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: Simon Horman <simon.horman@netronome.com> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* tools: bpf_jit_disasm: Handle large images.David Daney2017-06-141-11/+26
| | | | | | | | | Dynamically allocate memory so that JIT images larger than the size of the statically allocated array can be handled. Signed-off-by: David Daney <david.daney@cavium.com> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* tools: bpf_jit_disasm: Add option to dump JIT image to a file.David Daney2017-04-131-4/+36
| | | | | | | | | | | | | | | | | | When debugging the JIT on an embedded platform or cross build environment, libbfd may not be available, making it impossible to run bpf_jit_disasm natively. Add an option to emit a binary image of the JIT code to a file. This file can then be disassembled off line. Typical usage in this case might be (pasting mips64 dmesg output to cat command): $ cat > jit.raw $ bpf_jit_disasm -f jit.raw -O jit.bin $ mips64-linux-gnu-objdump -D -b binary -m mips:isa64r2 -EB jit.bin Signed-off-by: David Daney <david.daney@cavium.com> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* tools: bpf_jit_disasm: check for klogctl failureColin Ian King2016-05-091-0/+3
| | | | | | | | | klogctl can fail and return -ve len, so check for this and return NULL to avoid passing a (size_t)-1 to malloc. Signed-off-by: Colin Ian King <colin.king@canonical.com> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* tools, bpf_asm: simplify parser rule for BPF extensionsRay Bellis2016-02-222-151/+79
| | | | | | | | | | We can already use yylval in the lexer for encoding the BPF extension number, so that the parser rules can be further reduced to a single one for each B/H/W case. Signed-off-by: Ray Bellis <ray@isc.org> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* bpf_dbg: do not initialise statics to 0Wei Tang2016-02-111-5/+5
| | | | | | | | | This patch fixes the checkpatch.pl error to bpf_dbg.c: ERROR: do not initialise statics to 0 Signed-off-by: Wei Tang <tangwei@cmss.chinamobile.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* tools/net: Use include/uapi with __EXPORTED_HEADERS__Kamal Mostafa2015-11-151-3/+4
| | | | | | | | | | Use the local uapi headers to keep in sync with "recently" added #define's (e.g. SKF_AD_VLAN_TPID). Refactored CFLAGS, and bpf_asm doesn't need -I. Fixes: 3f356385e8a4 ("filter: bpf_asm: add minimal bpf asm tool") Signed-off-by: Kamal Mostafa <kamal@canonical.com> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* tools: bpf_jit_disasm: make get_last_jit_image return unsignedAndrzej Hajda2015-09-291-2/+2
| | | | | | | | | | | | The function returns always non-negative values. The problem has been detected using proposed semantic patch scripts/coccinelle/tests/assign_signed_to_unsigned.cocci [1]. [1]: http://permalink.gmane.org/gmane.linux.kernel/2046107 Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* bpf_jit_disasm: also support reading jit dump from fileDaniel Borkmann2015-08-011-19/+90
| | | | | | | | | | This patch adds support to read the dmesg BPF JIT dump also from a file instead of the klog buffer. I found this quite useful when going through some 'before/after patch' logs. It also fixes a regex leak found by valgrind when no image dump was found. Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* tools: bpf_jit_disasm: fix segfault on disabled debugging log outputDaniel Borkmann2015-05-271-0/+2
| | | | | | | | | | | | With recent debugging, I noticed that bpf_jit_disasm segfaults when there's no debugging output from the JIT compiler to the kernel log. Reason is that when regexec(3) doesn't match on anything, start/end offsets are not being filled out and contain some uninitialized garbage from stack. Thus, we need zero out offsets first. Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* tools: bpf_asm: cleanup vlan extension related tokenDaniel Borkmann2015-03-252-14/+14
| | | | | | | | We now have K_VLANT, K_VLANP and K_VLANTPID. Clean them up into more descriptive token, namely K_VLAN_TCI, K_VLAN_AVAIL and K_VLAN_TPID. Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* filter: introduce SKF_AD_VLAN_TPID BPF extensionMichal Sekletar2015-03-242-1/+12
| | | | | | | | | | | | | | | | | | | | | If vlan offloading takes place then vlan header is removed from frame and its contents, both vlan_tci and vlan_proto, is available to user space via TPACKET interface. However, only vlan_tci can be used in BPF filters. This commit introduces a new BPF extension. It makes possible to load the value of vlan_proto (vlan TPID) to register A. Support for classic BPF and eBPF is being added, analogous to skb->protocol. Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: Alexei Starovoitov <ast@plumgrid.com> Cc: Jiri Pirko <jpirko@redhat.com> Signed-off-by: Michal Sekletar <msekleta@redhat.com> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@plumgrid.com> Reviewed-by: Jiri Pirko <jiri@resnulli.us> Signed-off-by: David S. Miller <davem@davemloft.net>
* tools: bpf_jit_disasm: increase image buffer sizeAlexei Starovoitov2014-05-161-1/+1
| | | | | | | | | JITed seccomp filters can be quite large if they check a lot of syscalls Simply increase buffer size Signed-off-by: Alexei Starovoitov <ast@plumgrid.com> Acked-by: Daniel Borkmann <dborkman@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* tools: bpf_jit_disasm: ignore image address for disasmAlexei Starovoitov2014-05-161-10/+8
| | | | | | | | | | | | seccomp filters use kernel JIT image addresses, so bpf_jit_enable=2 prints [ 20.146438] flen=3 proglen=82 pass=0 image=0000000000000000 [ 20.146442] JIT code: 00000000: 55 48 89 e5 48 81 ec 28 02 00 00 ... ignore image address, so that seccomp filters can be disassembled Signed-off-by: Alexei Starovoitov <ast@plumgrid.com> Acked-by: Daniel Borkmann <dborkman@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller2014-05-121-1/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Conflicts: drivers/net/ethernet/altera/altera_sgdma.c net/netlink/af_netlink.c net/sched/cls_api.c net/sched/sch_api.c The netlink conflict dealt with moving to netlink_capable() and netlink_ns_capable() in the 'net' tree vs. supporting 'tc' operations in non-init namespaces. These were simple transformations from netlink_capable to netlink_ns_capable. The Altera driver conflict was simply code removal overlapping some void pointer cast cleanups in net-next. Signed-off-by: David S. Miller <davem@davemloft.net>
| * bpf_dbg: fix wrong register usageBrendan Hickey2014-04-301-1/+1
| | | | | | | | | | | | | | | | | | The AND instruction is erroneously using the X register instead of the K register. Signed-off-by: Brendan Hickey <bhickey@google.com> Signed-off-by: Daniel Borkmann <dborkman@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | filter: added BPF random opcodeChema Gonzalez2014-04-232-1/+11
|/ | | | | | | | | | | | | | | Added a new ancillary load (bpf call in eBPF parlance) that produces a 32-bit random number. We are implementing it as an ancillary load (instead of an ISA opcode) because (a) it is simpler, (b) allows easy JITing, and (c) seems more in line with generic ISAs that do not have "get a random number" as a instruction, but as an OS call. The main use for this ancillary load is to perform random packet sampling. Signed-off-by: Chema Gonzalez <chema@google.com> Acked-by: Alexei Starovoitov <ast@plumgrid.com> Acked-by: Daniel Borkmann <dborkman@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller2014-03-151-1/+1
|\ | | | | | | | | | | | | | | | | | | | | Conflicts: drivers/net/usb/r8152.c drivers/net/xen-netback/netback.c Both the r8152 and netback conflicts were simple overlapping changes. Signed-off-by: David S. Miller <davem@davemloft.net>
| * tools/net/Makefile: Define PACKAGE to fix build problemsMarkos Chandras2014-03-121-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fixes the following build problem with binutils-2.24 gcc -Wall -O2 -c -o bpf_jit_disasm.o bpf_jit_disasm.c In file included from bpf_jit_disasm.c:25:0: /usr/include/bfd.h:35:2: error: #error config.h must be included before this header #error config.h must be included before this header This is similar to commit 3ce711a6abc27abce1554e1d671a8762b7187690 "perf tools: bfd.h/libbfd detection fails with recent binutils" See: https://sourceware.org/bugzilla/show_bug.cgi?id=14243 CC: David S. Miller <davem@davemloft.net> CC: Daniel Borkmann <dborkman@redhat.com> CC: netdev@vger.kernel.org Acked-by: Daniel Borkmann <dborkman@redhat.com> Signed-off-by: Markos Chandras <markos.chandras@imgtec.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | tools: bpf_dbg: various misc code cleanupsDaniel Borkmann2014-02-251-64/+55
|/ | | | | | | | | | | Lets clean up bpf_dbg a bit and improve its code slightly in various areas: i) Get rid of some macros as there's no good reason for keeping them, ii) remove one unused variable and reduce scope of various variables found by cppcheck, iii) Close non-default file descriptors when exiting the shell. Signed-off-by: Daniel Borkmann <dborkman@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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