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Daniel Borkmann says:
====================
pull-request: bpf-next 2018-07-20
The following pull-request contains BPF updates for your *net-next* tree.
The main changes are:
1) Add sharing of BPF objects within one ASIC: this allows for reuse of
the same program on multiple ports of a device, and therefore gains
better code store utilization. On top of that, this now also enables
sharing of maps between programs attached to different ports of a
device, from Jakub.
2) Cleanup in libbpf and bpftool's Makefile to reduce unneeded feature
detections and unused variable exports, also from Jakub.
3) First batch of RCU annotation fixes in prog array handling, i.e.
there are several __rcu markers which are not correct as well as
some of the RCU handling, from Roman.
4) Two fixes in BPF sample files related to checking of the prog_cnt
upper limit from sample loader, from Dan.
5) Minor cleanup in sockmap to remove a set but not used variable,
from Colin.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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"prog_cnt" is the number of elements which are filled out in prog_fd[]
so the test should be >= instead of >.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: David Ahern <dsahern@gmail.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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I can't see that we check prog_cnt to ensure it doesn't go over
MAX_PROGS.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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All conflicts were trivial overlapping changes, so reasonably
easy to resolve.
Signed-off-by: David S. Miller <davem@davemloft.net>
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People noticed that the code match on IEEE 802.1ad (ETH_P_8021AD) ethertype,
and this implies Q-in-Q or double tagged VLANs. Thus, we better parse
the next VLAN header too. It is even marked as a TODO.
This is relevant for real world use-cases, as XDP cpumap redirect can be
used when the NIC RSS hashing is broken. E.g. the ixgbe driver HW cannot
handle double tagged VLAN packets, and places everything into a single
RX queue. Using cpumap redirect, users can redistribute traffic across
CPUs to solve this, which is faster than the network stacks RPS solution.
It is left as an exerise how to distribute the packets across CPUs. It
would be convenient to use the RX hash, but that is not _yet_ exposed
to XDP programs. For now, users can code their own hash, as I've demonstrated
in the Suricata code (where Q-in-Q is handled correctly).
Reported-by: Florian Maury <florian.maury-cv@x-cli.eu>
Reported-by: Marek Majkowski <marek@cloudflare.com>
Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
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Daniel Borkmann says:
====================
pull-request: bpf-next 2018-07-03
The following pull-request contains BPF updates for your *net-next* tree.
The main changes are:
1) Various improvements to bpftool and libbpf, that is, bpftool build
speed improvements, missing BPF program types added for detection
by section name, ability to load programs from '.text' section is
made to work again, and better bash completion handling, from Jakub.
2) Improvements to nfp JIT's map read handling which allows for optimizing
memcpy from map to packet, from Jiong.
3) New BPF sample is added which demonstrates XDP in combination with
bpf_perf_event_output() helper to sample packets on all CPUs, from Toke.
4) Add a new BPF kselftest case for tracking connect(2) BPF hooks
infrastructure in combination with TFO, from Andrey.
5) Extend the XDP/BPF xdp_rxq_info sample code with a cmdline option to
read payload from packet data in order to use it for benchmarking.
Also for '--action XDP_TX' option implement swapping of MAC addresses
to avoid drops on some hardware seen during testing, from Jesper.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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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>
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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>
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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>
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git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull Kbuild updates from Masahiro Yamada:
- verify depmod is installed before modules_install
- support build salt in case build ids must be unique between builds
- allow users to specify additional host compiler flags via HOST*FLAGS,
and rename internal variables to KBUILD_HOST*FLAGS
- update buildtar script to drop vax support, add arm64 support
- update builddeb script for better debarch support
- document the pit-fall of if_changed usage
- fix parallel build of UML with O= option
- make 'samples' target depend on headers_install to fix build errors
- remove deprecated host-progs variable
- add a new coccinelle script for refcount_t vs atomic_t check
- improve double-test coccinelle script
- misc cleanups and fixes
* tag 'kbuild-v4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (41 commits)
coccicheck: return proper error code on fail
Coccinelle: doubletest: reduce side effect false positives
kbuild: remove deprecated host-progs variable
kbuild: make samples really depend on headers_install
um: clean up archheaders recipe
kbuild: add %asm-generic to no-dot-config-targets
um: fix parallel building with O= option
scripts: Add Python 3 support to tracing/draw_functrace.py
builddeb: Add automatic support for sh{3,4}{,eb} architectures
builddeb: Add automatic support for riscv* architectures
builddeb: Add automatic support for m68k architecture
builddeb: Add automatic support for or1k architecture
builddeb: Add automatic support for sparc64 architecture
builddeb: Add automatic support for mips{,64}r6{,el} architectures
builddeb: Add automatic support for mips64el architecture
builddeb: Add automatic support for ppc64 and powerpcspe architectures
builddeb: Introduce functions to simplify kconfig tests in set_debarch
builddeb: Drop check for 32-bit s390
builddeb: Change architecture detection fallback to use dpkg-architecture
builddeb: Skip architecture detection when KBUILD_DEBARCH is set
...
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In preparation for enabling command line LDLIBS, re-name HOST_LOADLIBES
to KBUILD_HOSTLDLIBS as the internal use only flags. Also rename
existing usage to HOSTLDLIBS for consistency. This should not have any
visible effects.
Signed-off-by: Laura Abbott <labbott@redhat.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
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In preparation for enabling command line CFLAGS, re-name HOSTCFLAGS to
KBUILD_HOSTCFLAGS as the internal use only flags. This should not have
any visible effects.
Signed-off-by: Laura Abbott <labbott@redhat.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
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The teardown race in cpumap is really hard to reproduce. These changes
makes it easier to reproduce, for QA.
The --stress-mode now have a case of a very small queue size of 8, that helps
to trigger teardown flush to encounter a full queue, which results in calling
xdp_return_frame API, in a non-NAPI protect context.
Also increase MAX_CPUS, as my QA department have larger machines than me.
Tested-by: Jean-Tsung Hsiao <jhsiao@redhat.com>
Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
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Pull networking fixes from David Miller:
"Lots of fixes, here goes:
1) NULL deref in qtnfmac, from Gustavo A. R. Silva.
2) Kernel oops when fw download fails in rtlwifi, from Ping-Ke Shih.
3) Lost completion messages in AF_XDP, from Magnus Karlsson.
4) Correct bogus self-assignment in rhashtable, from Rishabh
Bhatnagar.
5) Fix regression in ipv6 route append handling, from David Ahern.
6) Fix masking in __set_phy_supported(), from Heiner Kallweit.
7) Missing module owner set in x_tables icmp, from Florian Westphal.
8) liquidio's timeouts are HZ dependent, fix from Nicholas Mc Guire.
9) Link setting fixes for sh_eth and ravb, from Vladimir Zapolskiy.
10) Fix NULL deref when using chains in act_csum, from Davide Caratti.
11) XDP_REDIRECT needs to check if the interface is up and whether the
MTU is sufficient. From Toshiaki Makita.
12) Net diag can do a double free when killing TCP_NEW_SYN_RECV
connections, from Lorenzo Colitti.
13) nf_defrag in ipv6 can unnecessarily hold onto dst entries for a
full minute, delaying device unregister. From Eric Dumazet.
14) Update MAC entries in the correct order in ixgbe, from Alexander
Duyck.
15) Don't leave partial mangles bpf program in jit_subprogs, from
Daniel Borkmann.
16) Fix pfmemalloc SKB state propagation, from Stefano Brivio.
17) Fix ACK handling in DCTCP congestion control, from Yuchung Cheng.
18) Use after free in tun XDP_TX, from Toshiaki Makita.
19) Stale ipv6 header pointer in ipv6 gre code, from Prashant Bhole.
20) Don't reuse remainder of RX page when XDP is set in mlx4, from
Saeed Mahameed.
21) Fix window probe handling of TCP rapair sockets, from Stefan
Baranoff.
22) Missing socket locking in smc_ioctl(), from Ursula Braun.
23) IPV6_ILA needs DST_CACHE, from Arnd Bergmann.
24) Spectre v1 fix in cxgb3, from Gustavo A. R. Silva.
25) Two spots in ipv6 do a rol32() on a hash value but ignore the
result. Fixes from Colin Ian King"
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (176 commits)
tcp: identify cryptic messages as TCP seq # bugs
ptp: fix missing break in switch
hv_netvsc: Fix napi reschedule while receive completion is busy
MAINTAINERS: Drop inactive Vitaly Bordug's email
net: cavium: Add fine-granular dependencies on PCI
net: qca_spi: Fix log level if probe fails
net: qca_spi: Make sure the QCA7000 reset is triggered
net: qca_spi: Avoid packet drop during initial sync
ipv6: fix useless rol32 call on hash
ipv6: sr: fix useless rol32 call on hash
net: sched: Using NULL instead of plain integer
net: usb: asix: replace mii_nway_restart in resume path
net: cxgb3_main: fix potential Spectre v1
lib/rhashtable: consider param->min_size when setting initial table size
net/smc: reset recv timeout after clc handshake
net/smc: add error handling for get_user()
net/smc: optimize consumer cursor updates
net/nfc: Avoid stalls when nfc_alloc_send_skb() returned NULL.
ipv6: ila: select CONFIG_DST_CACHE
net: usb: rtl8150: demote allmulti message to dev_dbg()
...
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The below path error can occur:
# ./xdp2skb_meta.sh --dev eth0 --list
./xdp2skb_meta.sh: line 61: /usr/sbin/tc: No such file or directory
So just use command names instead of absolute paths of tc and ip.
In addition, it allow callers to redefine $TC and $IP paths
Fixes: 36e04a2d78d9 ("samples/bpf: xdp2skb_meta shows transferring info from XDP to SKB")
Reviewed-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: Taeung Song <treeze.taeung@gmail.com>
Acked-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
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For untracked executables of samples/bpf, add this.
Untracked files:
(use "git add <file>..." to include in what will be committed)
samples/bpf/cpustat
samples/bpf/fds_example
samples/bpf/lathist
samples/bpf/load_sock_ops
...
Signed-off-by: Taeung Song <treeze.taeung@gmail.com>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
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test_task_rename() and test_urandom_read()
can be failed during write() and read(),
So check the result of them.
Reviewed-by: David Laight <David.Laight@ACULAB.COM>
Signed-off-by: Taeung Song <treeze.taeung@gmail.com>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
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To avoid the below build warning message,
use new generate_load() checking the return value.
ignoring return value of ‘system’, declared with attribute warn_unused_result
And it also refactors the duplicate code of both
test_perf_event_all_cpu() and test_perf_event_task()
Cc: Teng Qin <qinteng@fb.com>
Signed-off-by: Taeung Song <treeze.taeung@gmail.com>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
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This fixes build error regarding redefinition:
CLANG-bpf samples/bpf/parse_varlen.o
samples/bpf/parse_varlen.c:111:8: error: redefinition of 'vlan_hdr'
struct vlan_hdr {
^
./include/linux/if_vlan.h:38:8: note: previous definition is here
So remove duplicate 'struct vlan_hdr' in sample code and include if_vlan.h
Signed-off-by: Taeung Song <treeze.taeung@gmail.com>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
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Sendmsg in the SKB path of AF_XDP can now return EBUSY when a packet
was discarded and completed by the driver. Just ignore this message
in the sample application.
Fixes: b4b8faa1ded7 ("samples/bpf: sample application and documentation for AF_XDP sockets")
Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com>
Reported-by: Pavel Odintsov <pavel@fastnetmon.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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mdev_access() calls mbochs_get_page() with mdev_state->ops_lock held,
while mbochs_get_page() locks the mutex by itself.
It leads to unavoidable deadlock.
Found by Linux Driver Verification project (linuxtesting.org).
Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
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Pull VFIO fixes from Alex Williamson:
- Make vfio-pci IGD extensions optional via Kconfig (Alex Williamson)
- Remove unused and soon to be removed map_atomic callback from mbochs
sample driver, add unmap callback to avoid dmabuf leaks (Gerd
Hoffmann)
- Fix usage of get_user_pages_longterm() (Jason Gunthorpe)
- Fix sample mbochs driver vm_operations_struct.fault return type
(Souptick Joarder)
* tag 'vfio-v4.18-rc4' of git://github.com/awilliam/linux-vfio:
sample/vfio-mdev: Change return type to vm_fault_t
vfio: Use get_user_pages_longterm correctly
sample/mdev/mbochs: add mbochs_kunmap_dmabuf
sample/mdev/mbochs: remove mbochs_kmap_atomic_dmabuf
vfio/pci: Make IGD support a configurable option
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convert mbochs_region_vm_fault and mbochs_dmabuf_vm_fault
to return vm_fault_t type.
Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
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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>
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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>
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For ACLs implemented using either FIB rules or FIB entries, the BPF
program needs the FIB lookup status to be able to drop the packet.
Since the bpf_fib_lookup API has not reached a released kernel yet,
change the return code to contain an encoding of the FIB lookup
result and return the nexthop device index in the params struct.
In addition, inform the BPF program of any post FIB lookup reason as
to why the packet needs to go up the stack.
The fib result for unicast routes must have an egress device, so remove
the check that it is non-NULL.
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
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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
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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>
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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>
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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>
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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>
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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/
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Cc: Philippe Ombredanne <pombredanne@nexb.com>
Acked-by: Willy Tarreau <w@1wt.eu>
Acked-by: Linus Walleij <triad@dflund.se>
Acked-by: Robin van der Gracht <robin@protonic.nl>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>
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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>
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Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
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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>
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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>
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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>
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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>
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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>
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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>
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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>
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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>
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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>
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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
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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>
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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>
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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>
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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>
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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>
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