path: root/samples
AgeCommit message (Collapse)Author
2018-04-10Merge tag 'rproc-v4.17' of git://github.com/andersson/remoteprocLinus Torvalds
Pull remoteproc updates from Bjorn Andersson: - add support for generating coredumps for remoteprocs using devcoredump - add the Qualcomm sysmon driver for intra-remoteproc crash handling - a number of fixes in Qualcomm and IMX drivers * tag 'rproc-v4.17' of git://github.com/andersson/remoteproc: remoteproc: fix null pointer dereference on glink only platforms soc: qcom: qmi: add CONFIG_NET dependency remoteproc: imx_rproc: Slightly simplify code in 'imx_rproc_probe()' remoteproc: imx_rproc: Re-use existing error handling path in 'imx_rproc_probe()' remoteproc: imx_rproc: Fix an error handling path in 'imx_rproc_probe()' samples: Introduce Qualcomm QMI sample client remoteproc: qcom: Introduce sysmon remoteproc: Pass type of shutdown to subdev remove remoteproc: qcom: Register segments for core dump soc: qcom: mdt-loader: Return relocation base remoteproc: Rename "load_rsc_table" to "parse_fw" remoteproc: Add remote processor coredump support remoteproc: Remove null character write of shared mem
2018-04-06Merge tag 'vfio-v4.17-rc1' of git://github.com/awilliam/linux-vfioLinus Torvalds
Pull VFIO updates from Alex Williamson: - Adopt iommu_unmap_fast() interface to type1 backend (Suravee Suthikulpanit) - mdev sample driver fixup (Shunyong Yang) - More efficient PFN mapping handling in type1 backend (Jason Cai) - VFIO device ioeventfd interface (Alex Williamson) - Tag new vfio-platform sub-maintainer (Alex Williamson) * tag 'vfio-v4.17-rc1' of git://github.com/awilliam/linux-vfio: MAINTAINERS: vfio/platform: Update sub-maintainer vfio/pci: Add ioeventfd support vfio/pci: Use endian neutral helpers vfio/pci: Pull BAR mapping setup from read-write path vfio/type1: Improve memory pinning process for raw PFN mapping vfio-mdev/samples: change RDI interrupt condition vfio/type1: Adopt fast IOTLB flush interface when unmap IOVAs
2018-04-03Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-nextLinus Torvalds
Pull networking updates from David Miller: 1) Support offloading wireless authentication to userspace via NL80211_CMD_EXTERNAL_AUTH, from Srinivas Dasari. 2) A lot of work on network namespace setup/teardown from Kirill Tkhai. Setup and cleanup of namespaces now all run asynchronously and thus performance is significantly increased. 3) Add rx/tx timestamping support to mv88e6xxx driver, from Brandon Streiff. 4) Support zerocopy on RDS sockets, from Sowmini Varadhan. 5) Use denser instruction encoding in x86 eBPF JIT, from Daniel Borkmann. 6) Support hw offload of vlan filtering in mvpp2 dreiver, from Maxime Chevallier. 7) Support grafting of child qdiscs in mlxsw driver, from Nogah Frankel. 8) Add packet forwarding tests to selftests, from Ido Schimmel. 9) Deal with sub-optimal GSO packets better in BBR congestion control, from Eric Dumazet. 10) Support 5-tuple hashing in ipv6 multipath routing, from David Ahern. 11) Add path MTU tests to selftests, from Stefano Brivio. 12) Various bits of IPSEC offloading support for mlx5, from Aviad Yehezkel, Yossi Kuperman, and Saeed Mahameed. 13) Support RSS spreading on ntuple filters in SFC driver, from Edward Cree. 14) Lots of sockmap work from John Fastabend. Applications can use eBPF to filter sendmsg and sendpage operations. 15) In-kernel receive TLS support, from Dave Watson. 16) Add XDP support to ixgbevf, this is significant because it should allow optimized XDP usage in various cloud environments. From Tony Nguyen. 17) Add new Intel E800 series "ice" ethernet driver, from Anirudh Venkataramanan et al. 18) IP fragmentation match offload support in nfp driver, from Pieter Jansen van Vuuren. 19) Support XDP redirect in i40e driver, from Björn Töpel. 20) Add BPF_RAW_TRACEPOINT program type for accessing the arguments of tracepoints in their raw form, from Alexei Starovoitov. 21) Lots of striding RQ improvements to mlx5 driver with many performance improvements, from Tariq Toukan. 22) Use rhashtable for inet frag reassembly, from Eric Dumazet. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1678 commits) net: mvneta: improve suspend/resume net: mvneta: split rxq/txq init and txq deinit into SW and HW parts ipv6: frags: fix /proc/sys/net/ipv6/ip6frag_low_thresh net: bgmac: Fix endian access in bgmac_dma_tx_ring_free() net: bgmac: Correctly annotate register space route: check sysctl_fib_multipath_use_neigh earlier than hash fix typo in command value in drivers/net/phy/mdio-bitbang. sky2: Increase D3 delay to sky2 stops working after suspend net/mlx5e: Set EQE based as default TX interrupt moderation mode ibmvnic: Disable irqs before exiting reset from closed state net: sched: do not emit messages while holding spinlock vlan: also check phy_driver ts_info for vlan's real device Bluetooth: Mark expected switch fall-throughs Bluetooth: Set HCI_QUIRK_SIMULTANEOUS_DISCOVERY for BTUSB_QCA_ROME Bluetooth: btrsi: remove unused including <linux/version.h> Bluetooth: hci_bcm: Remove DMI quirk for the MINIX Z83-4 sh_eth: kill useless check in __sh_eth_get_regs() sh_eth: add sh_eth_cpu_data::no_xdfar flag ipv6: factorize sk_wmem_alloc updates done by __ip6_append_data() ipv4: factorize sk_wmem_alloc updates done by __ip_append_data() ...
2018-03-30bpf: sockmap, more BPF_SK_SKB_STREAM_VERDICT testsJohn Fastabend
Add BPF_SK_SKB_STREAM_VERDICT tests for ingress hook. While we do this also bring stream tests in-line with MSG based testing. A map for skb options is added for userland to push options at BPF programs. Signed-off-by: John Fastabend <john.fastabend@gmail.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-03-30bpf: sockmap, add BPF_F_INGRESS testsJohn Fastabend
Add a set of tests to verify ingress flag in redirect helpers works correctly with various msg sizes. Signed-off-by: John Fastabend <john.fastabend@gmail.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-03-28samples/bpf: raw tracepoint testAlexei Starovoitov
add empty raw_tracepoint bpf program to test overhead similar to kprobe and traditional tracepoint tests Signed-off-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-03-28samples/bpf: fix spelling mistake: "revieve" -> "receive"Colin Ian King
Trivial fix to spelling mistake in error message text Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-03-27soc: qcom: qmi: add CONFIG_NET dependencyArnd Bergmann
Access to the socket API and the root network namespace is only available when networking is enabled: ERROR: "kernel_sendmsg" [drivers/soc/qcom/qmi_helpers.ko] undefined! ERROR: "sock_release" [drivers/soc/qcom/qmi_helpers.ko] undefined! ERROR: "sock_create_kern" [drivers/soc/qcom/qmi_helpers.ko] undefined! ERROR: "kernel_getsockname" [drivers/soc/qcom/qmi_helpers.ko] undefined! ERROR: "init_net" [drivers/soc/qcom/qmi_helpers.ko] undefined! ERROR: "kernel_recvmsg" [drivers/soc/qcom/qmi_helpers.ko] undefined! Adding a dependency on CONFIG_NET lets us build it in all randconfig builds. Fixes: 9b8a11e82615 ("soc: qcom: Introduce QMI encoder/decoder") Acked-by: Andy Gross <andy.gross@linaro.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2018-03-22vfio-mdev/samples: change RDI interrupt conditionShunyong Yang
When FIFO mode is enabled, the receive data available interrupt (UART_IIR_RDI in code) should be triggered when the number of data in FIFO is equal or larger than interrupt trigger level. This patch changes the trigger level check to ensure multiple bytes received from upper layer can trigger RDI interrupt correctly. Cc: Joey Zheng <yu.zheng@hxt-semitech.com> Signed-off-by: Shunyong Yang <shunyong.yang@hxt-semitech.com> Reviewed by: Kirti Wankhede <kwankhede@nvidia.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-03-19bpf: sockmap test scriptJohn Fastabend
This adds the test script I am currently using to validate the latest sockmap changes. Shortly sockmap will be ported to selftests and these will be run from the infrastructure there. Until then add the script here so we have a coverage checklist when porting into selftests. Signed-off-by: John Fastabend <john.fastabend@gmail.com> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-03-19bpf: sockmap sample test for bpf_msg_pull_dataJohn Fastabend
This adds an option to test the msg_pull_data helper. This uses two options txmsg_start and txmsg_end to let the user specify start and end bytes to pull. The options can be used with txmsg_apply, txmsg_cork options as well as with any of the basic tests, txmsg, txmsg_redir and txmsg_drop (plus noisy variants) to run pull_data inline with those tests. By giving user direct control over the variables we can easily do negative testing as well as positive tests. Signed-off-by: John Fastabend <john.fastabend@gmail.com> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-03-19bpf: sockmap add SK_DROP testsJohn Fastabend
Add tests for SK_DROP. Signed-off-by: John Fastabend <john.fastabend@gmail.com> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-03-19bpf: sockmap sample support for bpf_msg_cork_bytes()John Fastabend
Add sample application support for the bpf_msg_cork_bytes helper. This lets the user specify how many bytes each verdict should apply to. Similar to apply_bytes() tests these can be run as a stand-alone test when used without other options or inline with other tests by using the txmsg_cork option along with any of the basic tests txmsg, txmsg_redir, txmsg_drop. Signed-off-by: John Fastabend <john.fastabend@gmail.com> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-03-19bpf: sockmap, add sample option to test apply_bytes helperJohn Fastabend
This adds an option to test the apply_bytes helper. This option lets the user specify an int on the command line specifying how much data each verdict should apply to. When this is set a map entry is set with the bytes input by the user and then the specified program --txmsg or --txmsg_redir will use the value and set the applied data. If no other option is set then a default --txmsg_apply program is run. This program will drop pkts if an error is detected on the bytes map lookup. Useful to verify the map lookup and apply helper are working and causing a hard error if it is not. Signed-off-by: John Fastabend <john.fastabend@gmail.com> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-03-19bpf: sockmap sample, add data verification optionJohn Fastabend
To verify data is not being dropped or corrupted this adds an option to verify test-patterns on recv. Signed-off-by: John Fastabend <john.fastabend@gmail.com> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-03-19bpf: sockmap sample, add sendfile testJohn Fastabend
To exercise TX ULP sendpage implementation we need a test that does a sendfile. Add sendfile test option here. Signed-off-by: John Fastabend <john.fastabend@gmail.com> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-03-19bpf: sockmap sample, add option to attach SK_MSG programJohn Fastabend
Add sockmap option to use SK_MSG program types. Signed-off-by: John Fastabend <john.fastabend@gmail.com> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-03-16arch: remove tile portArnd Bergmann
The Tile architecture port was added by Chris Metcalf in 2010, and maintained until early 2018 when he orphaned it due to his departure from Mellanox, and nobody else stepped up to maintain it. The product line is still around in the form of the BlueField SoC, but no longer uses the Tile architecture. There are also still products for sale with Tile-GX SoCs, notably the Mikrotik CCR router family. The products all use old (linux-3.3) kernels with lots of patches and won't be upgraded by their manufacturers. There have been efforts to port both OpenWRT and Debian to these, but both projects have stalled and are very unlikely to be continued in the future. Given that we are reasonably sure that nobody is still using the port with an upstream kernel any more, it seems better to remove it now while the port is in a good shape than to let it bitrot for a few years first. Cc: Chris Metcalf <chris.d.metcalf@gmail.com> Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> Link: http://www.mellanox.com/page/npu_multicore_overview Link: https://jenkins.debian.net/view/rebootstrap/job/rebootstrap_tilegx_gcc7/ Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2018-03-16arch: remove blackfin portArnd Bergmann
The Analog Devices Blackfin port was added in 2007 and was rather active for a while, but all work on it has come to a standstill over time, as Analog have changed their product line-up. Aaron Wu confirmed that the architecture port is no longer relevant, and multiple people suggested removing blackfin independently because of some of its oddities like a non-working SMP port, and the amount of duplication between the chip variants, which cause extra work when doing cross-architecture changes. Link: https://docs.blackfin.uclinux.org/ Acked-by: Aaron Wu <Aaron.Wu@analog.com> Acked-by: Bryan Wu <cooloney@gmail.com> Cc: Steven Miao <realmz6@gmail.com> Cc: Mike Frysinger <vapier@chromium.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2018-03-08samples/bpf: add example to test reading addressTeng Qin
This commit adds additional test in the trace_event example, by attaching the bpf program to MEM_UOPS_RETIRED.LOCK_LOADS event with PERF_SAMPLE_ADDR requested, and print the lock address value read from the bpf program to trace_pipe. Signed-off-by: Teng Qin <qinteng@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-03-06Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller
All of the conflicts were cases of overlapping changes. In net/core/devlink.c, we have to make care that the resouce size_params have become a struct member rather than a pointer to such an object. Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-04samples/bpf: add gre sequence number test.William Tu
The patch adds tests for GRE sequence number support for metadata mode tunnel. Signed-off-by: William Tu <u9012063@gmail.com> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-02samples/bpf: detach prog from cgroupPrashant Bhole
test_cgrp2_sock.sh and test_cgrp2_sock2.sh tests keep the program attached to cgroup even after completion. Using detach functionality of test_cgrp2_sock in both scripts. Signed-off-by: Prashant Bhole <bhole_prashant_q7@lab.ntt.co.jp> Acked-by: David Ahern <dsa@cumulusnetworks.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-02-27Merge tag 'seccomp-v4.16-rc4' of ↵James Morris
https://git.kernel.org/pub/scm/linux/kernel/git/kees/linux into fixes-v4.16-rc4 - do not build samples when cross compiling (Michal Hocko) From Kees: "This disables the seccomp samples when cross compiling. We're seen too many build issues here, so it's best to just disable it, especially since they're just the samples."
2018-02-26samples/bpf: Add program for CPU state statisticsLeo Yan
CPU is active when have running tasks on it and CPUFreq governor can select different operating points (OPP) according to different workload; we use 'pstate' to present CPU state which have running tasks with one specific OPP. On the other hand, CPU is idle which only idle task on it, CPUIdle governor can select one specific idle state to power off hardware logics; we use 'cstate' to present CPU idle state. Based on trace events 'cpu_idle' and 'cpu_frequency' we can accomplish the duration statistics for every state. Every time when CPU enters into or exits from idle states, the trace event 'cpu_idle' is recorded; trace event 'cpu_frequency' records the event for CPU OPP changing, so it's easily to know how long time the CPU stays in the specified OPP, and the CPU must be not in any idle state. This patch is to utilize the mentioned trace events for pstate and cstate statistics. To achieve more accurate profiling data, the program uses below sequence to insure CPU running/idle time aren't missed: - Before profiling the user space program wakes up all CPUs for once, so can avoid to missing account time for CPU staying in idle state for long time; the program forces to set 'scaling_max_freq' to lowest frequency and then restore 'scaling_max_freq' to highest frequency, this can ensure the frequency to be set to lowest frequency and later after start to run workload the frequency can be easily to be changed to higher frequency; - User space program reads map data and update statistics for every 5s, so this is same with other sample bpf programs for avoiding big overload introduced by bpf program self; - When send signal to terminate program, the signal handler wakes up all CPUs, set lowest frequency and restore highest frequency to 'scaling_max_freq'; this is exactly same with the first step so avoid to missing account CPU pstate and cstate time during last stage. Finally it reports the latest statistics. The program has been tested on Hikey board with octa CA53 CPUs, below is one example for statistics result, the format mainly follows up Jesper Dangaard Brouer suggestion. Jesper reminds to 'get printf to pretty print with thousands separators use %' and setlocale(LC_NUMERIC, "en_US")', tried three different arm64 GCC toolchains (5.4.0 20160609, 6.2.1 20161016, 6.3.0 20170516) but all of them cannot support printf flag character %' on arm64 platform, so go back print number without grouping mode. CPU states statistics: state(ms) cstate-0 cstate-1 cstate-2 pstate-0 pstate-1 pstate-2 pstate-3 pstate-4 CPU-0 767 6111 111863 561 31 756 853 190 CPU-1 241 10606 107956 484 125 646 990 85 CPU-2 413 19721 98735 636 84 696 757 89 CPU-3 84 11711 79989 17516 909 4811 5773 341 CPU-4 152 19610 98229 444 53 649 708 1283 CPU-5 185 8781 108697 666 91 671 677 1365 CPU-6 157 21964 95825 581 67 566 684 1284 CPU-7 125 15238 102704 398 20 665 786 1197 Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Vincent Guittot <vincent.guittot@linaro.org> Signed-off-by: Leo Yan <leo.yan@linaro.org> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-02-22samples/seccomp: do not compile when cross compiledMichal Hocko
samples/seccomp relies on the host setting which is not suitable for crosscompilation and it actually fails when crosscompiling s390 and powerpc all{yes,mod}config on x86_64 with samples/seccomp/bpf-helper.h:135:2: error: #error __BITS_PER_LONG value unusable. #error __BITS_PER_LONG value unusable. ^ In file included from samples/seccomp/bpf-fancy.c:13:0: samples/seccomp/bpf-fancy.c: In function ‘main’: samples/seccomp/bpf-fancy.c:38:11: error: ‘__NR_exit’ undeclared (first use in this function) SYSCALL(__NR_exit, ALLOW), and many others. I am doing these for compile testing and it's been quite useful to catch issues. Crosscompiling sample code on the other hand doesn't seem all that important so it seems like the easiest way to simply disable samples/seccomp when crosscompiling. Fixing this properly is not that easy as Kees explains: : IIRC, one of the problems is with build ordering problems: the kernel : headers used by the samples aren't available when cross compiling. Signed-off-by: Michal Hocko <mhocko@suse.com> Signed-off-by: Kees Cook <keescook@chromium.org>
2018-02-13bpf: samples/sockmap detach sock ops programPrashant Bhole
samples/sockops program keeps the sock_ops program attached to cgroup. Fixed this by detaching program before exit. Signed-off-by: Prashant Bhole <bhole_prashant_q7@lab.ntt.co.jp> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2018-02-13bpf: samples/sockmap fix Makefile for build errorPrashant Bhole
While building samples/sockmap, undefined reference error is thrown for `nla_dump_errormsg'. Linking tools/lib/bpf/nlattr.o as a fix Signed-off-by: Prashant Bhole <bhole_prashant_q7@lab.ntt.co.jp> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2018-02-13samples/bpf: adjust rlimit RLIMIT_MEMLOCK for xdp_redirectTushar Dave
Default rlimit RLIMIT_MEMLOCK is 64KB, causes bpf map failure. e.g. [root@labbpf]# ./xdp_redirect $(</sys/class/net/eth2/ifindex) \ > $(</sys/class/net/eth3/ifindex) failed to create a map: 1 Operation not permitted The failure is seen when executing xdp_redirect while xdp_monitor is already runnig. Signed-off-by: Tushar Dave <tushar.n.dave@oracle.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2018-02-12samples: Introduce Qualcomm QMI sample clientBjorn Andersson
Introduce a sample driver that register for server notifications and spawn clients for each available test service (service 15). The spawned clients implements the interface for encoding "ping" and "data" requests and decode the responses from the remote. Acked-By: Chris Lew <clew@codeaurora.org> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2018-02-06sample/bpf: fix erspan metadataWilliam Tu
The commit c69de58ba84f ("net: erspan: use bitfield instead of mask and offset") changes the erspan header to use bitfield, and commit d350a823020e ("net: erspan: create erspan metadata uapi header") creates a uapi header file. The above two commit breaks the current erspan test. This patch fixes it by adapting the above two changes. Fixes: ac80c2a165af ("samples/bpf: add erspan v2 sample code") Fixes: ef88f89c830f ("samples/bpf: extend test_tunnel_bpf.sh with ERSPAN") Signed-off-by: William Tu <u9012063@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-02-04Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpfDavid S. Miller
Alexei Starovoitov says: ==================== pull-request: bpf 2018-02-02 The following pull-request contains BPF updates for your *net* tree. The main changes are: 1) support XDP attach in libbpf, from Eric. 2) minor fixes, from Daniel, Jakub, Yonghong, Alexei. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2018-02-02samples/bpf: use bpf_set_link_xdp_fdEric Leblond
Use bpf_set_link_xdp_fd instead of set_link_xdp_fd to remove some code duplication and benefit of netlink ext ack errors message. Signed-off-by: Eric Leblond <eric@regit.org> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2018-02-02libbpf: add error reporting in XDPEric Leblond
Parse netlink ext attribute to get the error message returned by the card. Code is partially take from libnl. We add netlink.h to the uapi include of tools. And we need to avoid include of userspace netlink header to have a successful build of sample so nlattr.h has a define to avoid the inclusion. Using a direct define could have been an issue as NLMSGERR_ATTR_MAX can change in the future. We also define SOL_NETLINK if not defined to avoid to have to copy socket.h for a fixed value. Signed-off-by: Eric Leblond <eric@regit.org> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2018-02-01Merge tag 'driver-core-4.16-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core Pull driver core updates from Greg KH: "Here is the set of "big" driver core patches for 4.16-rc1. The majority of the work here is in the firmware subsystem, with reworks to try to attempt to make the code easier to handle in the long run, but no functional change. There's also some tree-wide sysfs attribute fixups with lots of acks from the various subsystem maintainers, as well as a handful of other normal fixes and changes. And finally, some license cleanups for the driver core and sysfs code. All have been in linux-next for a while with no reported issues" * tag 'driver-core-4.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (48 commits) device property: Define type of PROPERTY_ENRTY_*() macros device property: Reuse property_entry_free_data() device property: Move property_entry_free_data() upper firmware: Fix up docs referring to FIRMWARE_IN_KERNEL firmware: Drop FIRMWARE_IN_KERNEL Kconfig option USB: serial: keyspan: Drop firmware Kconfig options sysfs: remove DEBUG defines sysfs: use SPDX identifiers drivers: base: add coredump driver ops sysfs: add attribute specification for /sysfs/devices/.../coredump test_firmware: fix missing unlock on error in config_num_requests_store() test_firmware: make local symbol test_fw_config static sysfs: turn WARN() into pr_warn() firmware: Fix a typo in fallback-mechanisms.rst treewide: Use DEVICE_ATTR_WO treewide: Use DEVICE_ATTR_RO treewide: Use DEVICE_ATTR_RW sysfs.h: Use octal permissions component: add debugfs support bus: simple-pm-bus: convert bool SIMPLE_PM_BUS to tristate ...
2018-01-31Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-nextLinus Torvalds
Pull networking updates from David Miller: 1) Significantly shrink the core networking routing structures. Result of http://vger.kernel.org/~davem/seoul2017_netdev_keynote.pdf 2) Add netdevsim driver for testing various offloads, from Jakub Kicinski. 3) Support cross-chip FDB operations in DSA, from Vivien Didelot. 4) Add a 2nd listener hash table for TCP, similar to what was done for UDP. From Martin KaFai Lau. 5) Add eBPF based queue selection to tun, from Jason Wang. 6) Lockless qdisc support, from John Fastabend. 7) SCTP stream interleave support, from Xin Long. 8) Smoother TCP receive autotuning, from Eric Dumazet. 9) Lots of erspan tunneling enhancements, from William Tu. 10) Add true function call support to BPF, from Alexei Starovoitov. 11) Add explicit support for GRO HW offloading, from Michael Chan. 12) Support extack generation in more netlink subsystems. From Alexander Aring, Quentin Monnet, and Jakub Kicinski. 13) Add 1000BaseX, flow control, and EEE support to mvneta driver. From Russell King. 14) Add flow table abstraction to netfilter, from Pablo Neira Ayuso. 15) Many improvements and simplifications to the NFP driver bpf JIT, from Jakub Kicinski. 16) Support for ipv6 non-equal cost multipath routing, from Ido Schimmel. 17) Add resource abstration to devlink, from Arkadi Sharshevsky. 18) Packet scheduler classifier shared filter block support, from Jiri Pirko. 19) Avoid locking in act_csum, from Davide Caratti. 20) devinet_ioctl() simplifications from Al viro. 21) More TCP bpf improvements from Lawrence Brakmo. 22) Add support for onlink ipv6 route flag, similar to ipv4, from David Ahern. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1925 commits) tls: Add support for encryption using async offload accelerator ip6mr: fix stale iterator net/sched: kconfig: Remove blank help texts openvswitch: meter: Use 64-bit arithmetic instead of 32-bit tcp_nv: fix potential integer overflow in tcpnv_acked r8169: fix RTL8168EP take too long to complete driver initialization. qmi_wwan: Add support for Quectel EP06 rtnetlink: enable IFLA_IF_NETNSID for RTM_NEWLINK ipmr: Fix ptrdiff_t print formatting ibmvnic: Wait for device response when changing MAC qlcnic: fix deadlock bug tcp: release sk_frag.page in tcp_disconnect ipv4: Get the address of interface correctly. net_sched: gen_estimator: fix lockdep splat net: macb: Handle HRESP error net/mlx5e: IPoIB, Fix copy-paste bug in flow steering refactoring ipv6: addrconf: break critical section in addrconf_verify_rtnl() ipv6: change route cache aging logic i40e/i40evf: Update DESC_NEEDED value to reflect larger value bnxt_en: cleanup DIM work on device shutdown ...
2018-01-31Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jikos/livepatching Pull livepatching updates from Jiri Kosina: - handle 'infinitely'-long sleeping tasks, from Miroslav Benes - remove 'immediate' feature, as it turns out it doesn't provide the originally expected semantics, and brings more issues than value * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/livepatching: livepatch: add locking to force and signal functions livepatch: Remove immediate feature livepatch: force transition to finish livepatch: send a fake signal to all blocking tasks
2018-01-26samples/bpf: Partially fixes the bpf.o buildMickaël Salaün
Do not build lib/bpf/bpf.o with this Makefile but use the one from the library directory. This avoid making a buggy bpf.o file (e.g. missing symbols). This patch is useful if some code (e.g. Landlock tests) needs both the bpf.o (from tools/lib/bpf) and the bpf_load.o (from samples/bpf). Signed-off-by: Mickaël Salaün <mic@digikod.net> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-01-24bpf: sockmap set rlimitJohn Fastabend
Avoid extra step of setting limit from cmdline and do it directly in the program. Signed-off-by: John Fastabend <john.fastabend@gmail.com> Acked-by: Martin KaFai Lau <kafai@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-01-24bpf: sockmap put client sockets in blocking modeJohn Fastabend
Put client sockets in blocking mode otherwise with sendmsg tests its easy to overrun the socket buffers which results in the test being aborted. The original non-blocking was added to handle listen/accept with a single thread the client/accepted sockets do not need to be non-blocking. Signed-off-by: John Fastabend <john.fastabend@gmail.com> Acked-by: Martin KaFai Lau <kafai@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-01-24bpf: sockmap sample add base test without any BPF for comparisonJohn Fastabend
Add a base test that does not use BPF hooks to test baseline case. Signed-off-by: John Fastabend <john.fastabend@gmail.com> Acked-by: Martin KaFai Lau <kafai@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-01-24bpf: sockmap sample, report bytes/secJohn Fastabend
Report bytes/sec sent as well as total bytes. Useful to get rough idea how different configurations and usage patterns perform with sockmap. Signed-off-by: John Fastabend <john.fastabend@gmail.com> Acked-by: Martin KaFai Lau <kafai@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-01-24bpf: sockmap sample, use fork() for send and recvJohn Fastabend
Currently for SENDMSG tests first send completes then recv runs. This does not work well for large data sizes and/or many iterations. So fork the recv and send handler so that we run both send and recv. In the future we can add a parameter to do more than a single fork of tx/rx. With this we can get many GBps of data which helps exercise the sockmap code. Signed-off-by: John Fastabend <john.fastabend@gmail.com> Acked-by: Martin KaFai Lau <kafai@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-01-24bpf: add sendmsg option for testing BPF programsJohn Fastabend
When testing BPF programs using sockmap I often want to have more control over how sendmsg is exercised. This becomes even more useful as new sockmap program types are added. This adds a test type option to select type of test to run. Currently, only "ping" and "sendmsg" are supported, but more can be added as needed. The new help argument gives the following, Usage: ./sockmap --cgroup <cgroup_path> options: --help -h --cgroup -c --rate -r --verbose -v --iov_count -i --length -l --test -t Signed-off-by: John Fastabend <john.fastabend@gmail.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-01-24bpf: refactor sockmap sample program update for arg parsingJohn Fastabend
sockmap sample program takes arguments from cmd line but it reads them in using offsets into the array. Because we want to add more arguments in the future lets do proper argument handling. Also refactor code to pull apart sock init and ping/pong test. This allows us to add new tests in the future. Signed-off-by: John Fastabend <john.fastabend@gmail.com> Acked-by: Martin KaFai Lau <kafai@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-01-20samples/bpf: xdp_monitor include cpumap tracepoints in monitoringJesper Dangaard Brouer
The xdp_redirect_cpu sample have some "builtin" monitoring of the tracepoints for xdp_cpumap_*, but it is practical to have an external tool that can monitor these transpoint as an easy way to troubleshoot an application using XDP + cpumap. Specifically I need such external tool when working on Suricata and XDP cpumap redirect. Extend the xdp_monitor tool sample with monitoring of these xdp_cpumap_* tracepoints. Model the output format like xdp_redirect_cpu. Given I needed to handle per CPU decoding for cpumap, this patch also add per CPU info on the existing monitor events. This resembles part of the builtin monitoring output from sample xdp_rxq_info. Thus, also covering part of that sample in an external monitoring tool. Performance wise, the cpumap tracepoints uses bulking, which cause them to have very little overhead. Thus, they are enabled by default. Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-01-18samples/bpf: xdp2skb_meta comment explain why pkt-data pointers are invalidatedJesper Dangaard Brouer
Improve the 'unknown reason' comment, with an actual explaination of why the ctx pkt-data pointers need to be loaded after the helper function bpf_xdp_adjust_meta(). Based on the explaination Daniel gave. Fixes: 36e04a2d78d9 ("samples/bpf: xdp2skb_meta shows transferring info from XDP to SKB") Reported-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-01-17samples/bpf: Fix trailing semicolonLuis de Bethencourt
The trailing semicolon is an empty statement that does no operation. Removing it since it doesn't do anything. Signed-off-by: Luis de Bethencourt <luisbg@kernel.org> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-01-11livepatch: Remove immediate featureMiroslav Benes
Immediate flag has been used to disable per-task consistency and patch all tasks immediately. It could be useful if the patch doesn't change any function or data semantics. However, it causes problems on its own. The consistency problem is currently broken with respect to immediate patches. func a patches 1i 2i 3 When the patch 3 is applied, only 2i function is checked (by stack checking facility). There might be a task sleeping in 1i though. Such task is migrated to 3, because we do not check 1i in klp_check_stack_func() at all. Coming atomic replace feature would be easier to implement and more reliable without immediate. Thus, remove immediate feature completely and save us from the problems. Note that force feature has the similar problem. However it is considered as a last resort. If used, administrator should not apply any new live patches and should plan for reboot into an updated kernel. The architectures would now need to provide HAVE_RELIABLE_STACKTRACE to fully support livepatch. Signed-off-by: Miroslav Benes <mbenes@suse.cz> Acked-by: Josh Poimboeuf <jpoimboe@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2018-01-11samples/bpf: xdp2skb_meta shows transferring info from XDP to SKBJesper Dangaard Brouer
Creating a bpf sample that shows howto use the XDP 'data_meta' infrastructure, created by Daniel Borkmann. Very few drivers support this feature, but I wanted a functional sample to begin with, when working on adding driver support. XDP data_meta is about creating a communication channel between BPF programs. This can be XDP tail-progs, but also other SKB based BPF hooks, like in this case the TC clsact hook. In this sample I show that XDP can store info named "mark", and TC/clsact chooses to use this info and store it into the skb->mark. It is a bit annoying that XDP and TC samples uses different tools/libs when attaching their BPF hooks. As the XDP and TC programs need to cooperate and agree on a struct-layout, it is best/easiest if the two programs can be contained within the same BPF restricted-C file. As the bpf-loader, I choose to not use bpf_load.c (or libbpf), but instead wrote a bash shell scripted named xdp2skb_meta.sh, which demonstrate howto use the iproute cmdline tools 'tc' and 'ip' for loading BPF programs. To make it easy for first time users, the shell script have command line parsing, and support --verbose and --dry-run mode, if you just want to see/learn the tc+ip command syntax: # ./xdp2skb_meta.sh --dev ixgbe2 --dry-run # Dry-run mode: enable VERBOSE and don't call TC+IP tc qdisc del dev ixgbe2 clsact tc qdisc add dev ixgbe2 clsact tc filter add dev ixgbe2 ingress prio 1 handle 1 bpf da obj ./xdp2skb_meta_kern.o sec tc_mark # Flush XDP on device: ixgbe2 ip link set dev ixgbe2 xdp off ip link set dev ixgbe2 xdp obj ./xdp2skb_meta_kern.o sec xdp_mark Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>