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2018-06-28samples/bpf: xdp_rxq_info action XDP_TX must adjust MAC-addrsJesper Dangaard Brouer
XDP_TX requires also changing the MAC-addrs, else some hardware may drop the TX packet before reaching the wire. This was observed with driver mlx5. If xdp_rxq_info select --action XDP_TX the swapmac functionality is activated. It is also possible to manually enable via cmdline option --swapmac. This is practical if wanting to measure the overhead of writing/updating payload for other action types. Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com> Signed-off-by: Toke Høiland-Jørgensen <toke@toke.dk> Acked-by: Song Liu <songliubraving@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-06-28samples/bpf: extend xdp_rxq_info to read packet payloadJesper Dangaard Brouer
There is a cost associated with reading the packet data payload that this test ignored. Add option --read to allow enabling reading part of the payload. This sample/tool helps us analyse an issue observed with a NIC mlx5 (ConnectX-5 Ex) and an Intel(R) Xeon(R) CPU E5-1650 v4. With no_touch of data: Running XDP on dev:mlx5p1 (ifindex:8) action:XDP_DROP options:no_touch XDP stats CPU pps issue-pps XDP-RX CPU 0 14,465,157 0 XDP-RX CPU 1 14,464,728 0 XDP-RX CPU 2 14,465,283 0 XDP-RX CPU 3 14,465,282 0 XDP-RX CPU 4 14,464,159 0 XDP-RX CPU 5 14,465,379 0 XDP-RX CPU total 86,789,992 When not touching data, we observe that the CPUs have idle cycles. When reading data the CPUs are 100% busy in softirq. With reading data: Running XDP on dev:mlx5p1 (ifindex:8) action:XDP_DROP options:read XDP stats CPU pps issue-pps XDP-RX CPU 0 9,620,639 0 XDP-RX CPU 1 9,489,843 0 XDP-RX CPU 2 9,407,854 0 XDP-RX CPU 3 9,422,289 0 XDP-RX CPU 4 9,321,959 0 XDP-RX CPU 5 9,395,242 0 XDP-RX CPU total 56,657,828 The effect seen above is a result of cache-misses occuring when more RXQs are being used. Based on perf-event observations, our conclusion is that the CPUs DDIO (Direct Data I/O) choose to deliver packet into main memory, instead of L3-cache. We also found, that this can be mitigated by either using less RXQs or by reducing NICs the RX-ring size. Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com> Signed-off-by: Toke Høiland-Jørgensen <toke@toke.dk> Acked-by: Song Liu <songliubraving@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-06-27samples/bpf: Add xdp_sample_pkts exampleToke Høiland-Jørgensen
Add an example program showing how to sample packets from XDP using the perf event buffer. The example userspace program just prints the ethernet header for every packet sampled. Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: Toke Høiland-Jørgensen <toke@toke.dk> Acked-by: Song Liu <songliubraving@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-06-26sample/mdev/mbochs: add mbochs_kunmap_dmabufGerd Hoffmann
There is no default implementation for dma_buf_ops->unmap. So add a function unmapping the page, otherwise we'll leak them. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-06-26sample/mdev/mbochs: remove mbochs_kmap_atomic_dmabufGerd Hoffmann
Atomic mapping interface for dmabufs will be removed. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-06-12Merge tag 'vfio-v4.18-rc1' of git://github.com/awilliam/linux-vfioLinus Torvalds
Pull VFIO updates from Alex Williamson: - Bind type1 task tracking to group_leader to facilitate vCPU hotplug in QEMU (Alex Williamson) - Sample mdev display drivers, including region-based host and guest Linux drivers and bochs compatible dmabuf device (Gerd Hoffmann) - Fix vfio-platform reset module leak (Geert Uytterhoeven) - vfio-platform error message consistency (Geert Uytterhoeven) - Global checking for mdev uuid collisions rather than per parent device (Alex Williamson) - Use match_string() helper (Yisheng Xie) - vfio-platform PM domain fixes (Geert Uytterhoeven) - Fix sample mbochs driver build dependency (Arnd Bergmann) * tag 'vfio-v4.18-rc1' of git://github.com/awilliam/linux-vfio: samples: mbochs: add DMA_SHARED_BUFFER dependency vfio: platform: Fix using devices in PM Domains vfio: use match_string() helper vfio/mdev: Re-order sysfs attribute creation vfio/mdev: Check globally for duplicate devices vfio: platform: Make printed error messages more consistent vfio: platform: Fix reset module leak in error path sample: vfio bochs vbe display (host device for bochs-drm) sample: vfio mdev display - guest driver sample: vfio mdev display - host device vfio/type1: Fix task tracking for QEMU vCPU hotplug
2018-06-09samples: mbochs: add DMA_SHARED_BUFFER dependencyArnd Bergmann
The new bochs vbe sample fails to link when DMA_SHARED_BUFFER is disabled: ERROR: "dma_buf_export" [samples/vfio-mdev/mbochs.ko] undefined! ERROR: "dma_buf_fd" [samples/vfio-mdev/mbochs.ko] undefined! This uses a 'select' statement to enable that framework, like all other users do. Fixes: a5e6e6505f38 ("sample: vfio bochs vbe display (host device for bochs-drm)") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-06-08sample: vfio bochs vbe display (host device for bochs-drm)Gerd Hoffmann
Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-06-08sample: vfio mdev display - guest driverGerd Hoffmann
Guest fbdev driver for CONFIG_SAMPLE_VFIO_MDEV_MDPY. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-06-08sample: vfio mdev display - host deviceGerd Hoffmann
Simple framebuffer display, demo-ing the vfio region display interface (VFIO_GFX_PLANE_TYPE_REGION). Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-06-07Merge tag 'auxdisplay-for-linus-v4.18-rc1' of git://github.com/ojeda/linuxLinus Torvalds
Pull auxdisplay updates from Miguel Ojeda: "Mostly small fixes and cleanups, plus a non-trivial fix for charlcd - charlcd: fixes and cleanups (Robert Abel and Sean Young) - Kconfig fixes (Randy Dunlap, Corentin Labbe and Ulf Magnusson) - cfag12864bfb: const cleanup (Gustavo A. R. Silva) - Docs/licenses/warnings cleanups" * tag 'auxdisplay-for-linus-v4.18-rc1' of git://github.com/ojeda/linux: auxdisplay: Replace licenses with SPDX identifiers auxdisplay: make PANEL a menuconfig auxdisplay: fix broken menu auxdisplay: charlcd: Fix and clean up handling of x/y commands auxdisplay: charlcd: fix hex literal ranges for graphics command auxdisplay: charlcd: fix two-line command ^[[LN not marked as processed auxdisplay: charlcd: replace octal literal with form-feed escape sequence auxdisplay: charlcd: use null character instead of zero literal to terminate strings auxdisplay: charlcd: no need to call charlcd_gotoxy() if nothing changes auxdisplay: cfag12864bfb: constify fb_fix_screeninfo and fb_var_screeninfo structures auxdisplay: img-ascii-lcd: fix typo on select SYSCON/MFD_SYSCON auxdisplay: img-ascii-lcd: kconfig: Remove MIPS_SEAD3 reference auxdisplay: arm-charlcd: Fix struct charlcd doc line MAINTAINERS: auxdisplay: remove obsolete webpages Doc: misc-devices: move lcd-panel-cgram.txt to auxdisplay/
2018-06-05samples/bpf: xdpsock: use skb Tx path for XDP_SKBBjörn Töpel
Make sure that XDP_SKB also uses the skb Tx path. Signed-off-by: Björn Töpel <bjorn.topel@intel.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-06-04samples/bpf: minor *_nb_free performance fixMagnus Karlsson
Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-06-04samples/bpf: adapted to new uapiBjörn Töpel
Here, the xdpsock sample application is adjusted to the new descriptor format. Signed-off-by: Björn Töpel <bjorn.topel@intel.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-06-03bpf: flowlabel in bpf_fib_lookup should be flowinfoDavid Ahern
As Michal noted the flow struct takes both the flow label and priority. Update the bpf_fib_lookup API to note that it is flowinfo and not just the flow label. Cc: Michal Kubecek <mkubecek@suse.cz> Signed-off-by: David Ahern <dsahern@gmail.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2018-05-24Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-nextDavid S. Miller
Alexei Starovoitov says: ==================== pull-request: bpf-next 2018-05-24 The following pull-request contains BPF updates for your *net-next* tree. The main changes are: 1) Björn Töpel cleans up AF_XDP (removes rebind, explicit cache alignment from uapi, etc). 2) David Ahern adds mtu checks to bpf_ipv{4,6}_fib_lookup() helpers. 3) Jesper Dangaard Brouer adds bulking support to ndo_xdp_xmit. 4) Jiong Wang adds support for indirect and arithmetic shifts to NFP 5) Martin KaFai Lau cleans up BTF uapi and makes the btf_header extensible. 6) Mathieu Xhonneux adds an End.BPF action to seg6local with BPF helpers allowing to edit/grow/shrink a SRH and apply on a packet generic SRv6 actions. 7) Sandipan Das adds support for bpf2bpf function calls in ppc64 JIT. 8) Yonghong Song adds BPF_TASK_FD_QUERY command for introspection of tracing events. 9) other misc fixes from Gustavo A. R. Silva, Sirio Balmelli, John Fastabend, and Magnus Karlsson ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2018-05-24samples/bpf: xdp_monitor use err code from tracepoint xdp:xdp_devmap_xmitJesper Dangaard Brouer
Update xdp_monitor to use the recently added err code introduced in tracepoint xdp:xdp_devmap_xmit, to show if the drop count is caused by some driver general delivery problem. Other kind of drops will likely just be more normal TX space issues. Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2018-05-24samples/bpf: xdp_monitor use tracepoint xdp:xdp_devmap_xmitJesper Dangaard Brouer
The xdp_monitor sample/tool is updated to use the new tracepoint xdp:xdp_devmap_xmit the previous patch just introduced. Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2018-05-24samples/bpf: add a samples/bpf test for BPF_TASK_FD_QUERYYonghong Song
This is mostly to test kprobe/uprobe which needs kernel headers. Signed-off-by: Yonghong Song <yhs@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2018-05-22samples/bpf: adapt xdpsock to the new uapiBjörn Töpel
Adapt xdpsock to use the new getsockopt introduced in the previous commit. Signed-off-by: Björn Töpel <bjorn.topel@intel.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-05-21Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller
S390 bpf_jit.S is removed in net-next and had changes in 'net', since that code isn't used any more take the removal. TLS data structures split the TX and RX components in 'net-next', put the new struct members from the bug fix in 'net' into the RX part. The 'net-next' tree had some reworking of how the ERSPAN code works in the GRE tunneling code, overlapping with a one-line headroom calculation fix in 'net'. Overlapping changes in __sock_map_ctx_update_elem(), keep the bits that read the prog members via READ_ONCE() into local variables before using them. Signed-off-by: David S. Miller <davem@davemloft.net>
2018-05-18xsk: clean up SPDX headersBjörn Töpel
Clean up SPDX-License-Identifier and removing licensing leftovers. Signed-off-by: Björn Töpel <bjorn.topel@intel.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-05-16samples/bpf: Decrement ttl in fib forwarding exampleDavid Ahern
Only consider forwarding packets if ttl in received packet is > 1 and decrement ttl before handing off to bpf_redirect_map. Signed-off-by: David Ahern <dsahern@gmail.com> Acked-by: Yonghong Song <yhs@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-05-14samples: bpf: make the build less noisyJakub Kicinski
Building samples with clang ignores the $(Q) setting, always printing full command to the output. Make it less verbose. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2018-05-14samples: bpf: move libbpf from object dependencies to libsJakub Kicinski
Make complains that it doesn't know how to make libbpf.a: scripts/Makefile.host:106: target 'samples/bpf/../../tools/lib/bpf/libbpf.a' doesn't match the target pattern Now that we have it as a dependency of the sources simply add libbpf.a to libraries not objects. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Acked-by: Jesper Dangaard Brouer <brouer@redhat.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2018-05-14samples: bpf: fix build after move to compiling full libbpf.aJakub Kicinski
There are many ways users may compile samples, some of them got broken by commit 5f9380572b4b ("samples: bpf: compile and link against full libbpf"). Improve path resolution and make libbpf building a dependency of source files to force its build. Samples should now again build with any of: cd samples/bpf; make make samples/bpf/ make -C samples/bpf cd samples/bpf; make O=builddir make samples/bpf/ O=builddir make -C samples/bpf O=builddir export KBUILD_OUTPUT=builddir make samples/bpf/ make -C samples/bpf Fixes: 5f9380572b4b ("samples: bpf: compile and link against full libbpf") Reported-by: Björn Töpel <bjorn.topel@gmail.com> Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2018-05-14samples: bpf: rename libbpf.h to bpf_insn.hJakub Kicinski
The libbpf.h file in samples is clashing with libbpf's header. Since it only includes a subset of filter.h instruction helpers rename it to bpf_insn.h. Drop the unnecessary include of bpf/bpf.h. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Acked-by: Jesper Dangaard Brouer <brouer@redhat.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2018-05-14samples: bpf: include bpf/bpf.h instead of local libbpf.hJakub Kicinski
There are two files in the tree called libbpf.h which is becoming problematic. Most samples don't actually need the local libbpf.h they simply include it to get to bpf/bpf.h. Include bpf/bpf.h directly instead. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Acked-by: Jesper Dangaard Brouer <brouer@redhat.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2018-05-14samples/bpf: xdp_monitor, accept short optionsPrashant Bhole
Updated optstring parameter for getopt_long() to accept short options. Also updated usage() function. Signed-off-by: Prashant Bhole <bhole_prashant_q7@lab.ntt.co.jp> Acked-by: Jesper Dangaard Brouer <brouer@redhat.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-05-13x86/cpufeature: Guard asm_volatile_goto usage for BPF compilationAlexei Starovoitov
Workaround for the sake of BPF compilation which utilizes kernel headers, but clang does not support ASM GOTO and fails the build. Fixes: d0266046ad54 ("x86: Remove FAST_FEATURE_TESTS") Suggested-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: daniel@iogearbox.net Cc: peterz@infradead.org Cc: netdev@vger.kernel.org Cc: bp@alien8.de Cc: yhs@fb.com Cc: kernel-team@fb.com Cc: torvalds@linux-foundation.org Cc: davem@davemloft.net Link: https://lkml.kernel.org/r/20180513193222.1997938-1-ast@kernel.org
2018-05-11samples: bpf: convert some XDP samples from bpf_load to libbpfJakub Kicinski
Now that we can use full powers of libbpf in BPF samples, we should perhaps make the simplest XDP programs not depend on bpf_load helpers. This way newcomers will be exposed to the recommended library from the start. Use of bpf_prog_load_xattr() will also make it trivial to later on request offload of the programs by simply adding ifindex to the xattr. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-05-11tools: bpf: move the event reading loop to libbpfJakub Kicinski
There are two copies of event reading loop - in bpftool and trace_helpers "library". Consolidate them and move the code to libbpf. Return codes from trace_helpers are kept, but renamed to include LIBBPF prefix. Suggested-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-05-11samples: bpf: compile and link against full libbpfJakub Kicinski
samples/bpf currently cherry-picks object files from tools/lib/bpf to link against. Just compile the full library and link statically against it. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-05-11samples: bpf: rename struct bpf_map_def to avoid conflict with libbpfJakub Kicinski
Both tools/lib/bpf/libbpf.h and samples/bpf/bpf_load.h define their own version of struct bpf_map_def. The version in bpf_load.h has more fields. libbpf does not support inner maps and its definition of struct bpf_map_def lacks the related fields. Rename the definition in bpf_load.h (samples/bpf) to avoid conflicts. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-05-11samples/bpf: Add example of ipv4 and ipv6 forwarding in XDPDavid Ahern
Simple example of fast-path forwarding. It has a serious flaw in not verifying the egress device index supports XDP forwarding. If the egress device does not packets are dropped. Take this only as a simple example of fast-path forwarding. Signed-off-by: David Ahern <dsahern@gmail.com> Acked-by: David S. Miller <davem@davemloft.net> Acked-by: Jesper Dangaard Brouer <brouer@redhat.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-05-03samples/bpf: sample application and documentation for AF_XDP socketsMagnus Karlsson
This is a sample application for AF_XDP sockets. The application supports three different modes of operation: rxdrop, txonly and l2fwd. To show-case a simple round-robin load-balancing between a set of sockets in an xskmap, set the RR_LB compile time define option to 1 in "xdpsock.h". v2: The entries variable was calculated twice in {umem,xq}_nb_avail. Co-authored-by: Björn Töpel <bjorn.topel@intel.com> Signed-off-by: Björn Töpel <bjorn.topel@intel.com> Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2018-04-29samples/bpf: fix kprobe attachment issue on x64Yonghong Song
Commit d5a00528b58c ("syscalls/core, syscalls/x86: Rename struct pt_regs-based sys_*() to __x64_sys_*()") renamed a lot of syscall function sys_*() to __x64_sys_*(). This caused several kprobe based samples/bpf tests failing. This patch fixed the problem in bpf_load.c. For x86_64 architecture, function name __x64_sys_*() will be first used for kprobe event creation. If the creation is successful, it will be used. Otherwise, function name sys_*() will be used for kprobe event creation. Fixes: d5a00528b58c ("syscalls/core, syscalls/x86: Rename struct pt_regs-based sys_*() to __x64_sys_*()") Signed-off-by: Yonghong Song <yhs@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2018-04-29samples/bpf: move common-purpose trace functions to selftestsYonghong Song
There is no functionality change in this patch. The common-purpose trace functions, including perf_event polling and ksym lookup, are moved from trace_output_user.c and bpf_load.c to selftests/bpf/trace_helpers.c so that these function can be reused later in selftests. Acked-by: Alexei Starovoitov <ast@fb.com> Signed-off-by: Yonghong Song <yhs@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2018-04-27samples, bpf: remove redundant ret assignment in bpf_load_program()Wang Sheng-Hui
2 redundant ret assignments removed: * 'ret = 1' before the logic 'if (data_maps)', and if any errors jump to label 'done'. No 'ret = 1' needed before the error jump. * After the '/* load programs */' part, if everything goes well, then the BPF code will be loaded and 'ret' set to 0 by load_and_attach(). If something goes wrong, 'ret' set to none-O, the redundant 'ret = 0' after the for clause will make the error skipped. For example, if some BPF code cannot provide supported program types in ELF SEC("unknown"), the for clause will not call load_and_attach() to load the BPF code. 1 should be returned to callees instead of 0. Signed-off-by: Wang Sheng-Hui <shhuiw@foxmail.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-04-27samples/bpf: remove the bpf tunnel testsuite.William Tu
Move the testsuite to selftests/bpf/{test_tunnel_kern.c, test_tunnel.sh} Signed-off-by: William Tu <u9012063@gmail.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-04-25bpf: sockmap, remove samples programJohn Fastabend
The BPF sample sockmap is redundant now that equivelant tests exist in the BPF selftests. Lets remove this sample and only keep the selftest version that will be run as part of the selftest suite. Signed-off-by: John Fastabend <john.fastabend@gmail.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-04-25bpf: sockmap, add a set of tests to run by defaultJohn Fastabend
If no options are passed to sockmap after this patch we run a set of tests using various options and sendmsg/sendpage sizes. This replaces the sockmap_test.sh script. Signed-off-by: John Fastabend <john.fastabend@gmail.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-04-25bpf: sockmap, code sockmap_test in CJohn Fastabend
By moving sockmap_test from shell script into C we can run it directly from selftests, but we can also push the input/output around in proper structures. However, keep the CLI options around because they are useful for debugging when a paticular pattern of msghdr or sockmap options trips up the sockmap code path. Signed-off-by: John Fastabend <john.fastabend@gmail.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-04-24samples/bpf: extend test_tunnel_bpf.sh with xfrm state testEyal Birger
Add a test for fetching xfrm state parameters from a tc program running on ingress. Signed-off-by: Eyal Birger <eyal.birger@gmail.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-04-23bpf: sockmap sample use clang flag, -target bpfJohn Fastabend
Per Documentation/bpf/bpf_devel_QA.txt add the -target flag to the sockmap Makefile. Relevant text quoted here, Otherwise, you can use bpf target. Additionally, you _must_ use bpf target when: - Your program uses data structures with pointer or long / unsigned long types that interface with BPF helpers or context data structures. Access into these structures is verified by the BPF verifier and may result in verification failures if the native architecture is not aligned with the BPF architecture, e.g. 64-bit. An example of this is BPF_PROG_TYPE_SK_MSG require '-target bpf' Fixes: 69e8cc134bcb ("bpf: sockmap sample program") Signed-off-by: John Fastabend <john.fastabend@gmail.com> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-04-21Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller
Conflicts were simple overlapping changes in microchip driver. Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-20Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jikos/livepatching Pull livepatching fix from Jiri Kosina: "Shadow variable API list_head initialization fix from Petr Mladek" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/livepatching: livepatch: Allow to call a custom callback when freeing shadow variables livepatch: Initialize shadow variables safely by a custom callback
2018-04-18bpf: add bpf_xdp_adjust_tail sample progNikita V. Shirokov
adding bpf's sample program which is using bpf_xdp_adjust_tail helper by generating ICMPv4 "packet to big" message if ingress packet's size is bigger then 600 bytes Signed-off-by: Nikita V. Shirokov <tehnerd@tehnerd.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-04-18samples/bpf: fix xdp_monitor user output for tracepoint exceptionJesper Dangaard Brouer
The variable rec_i contains an XDP action code not an error. Thus, using err2str() was wrong, it should have been action2str(). Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-04-18samples/bpf: correct comment in sock_example.cWang Sheng-Hui
The program run against loopback interace "lo", not "eth0". Correct the comment. Signed-off-by: Wang Sheng-Hui <shhuiw@foxmail.com> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
generated by cgit 1.2.3-korg (git 2.39.0) at 2024-06-27 22:29:45 +0000