09 Dec, 2016
1 commit
-
The XDP prog checks if the incoming packet matches any VIP:PORT
combination in the BPF hashmap. If it is, it will encapsulate
the packet with a IPv4/v6 header as instructed by the value of
the BPF hashmap and then XDP_TX it out.The VIP:PORT -> IP-Encap-Info can be specified by the cmd args
of the user prog.Acked-by: Alexei Starovoitov
Signed-off-by: Martin KaFai Lau
Signed-off-by: David S. Miller
04 Dec, 2016
4 commits
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This patch adds the sample program test_cgrp2_attach2. This program is
similar to test_cgrp2_attach, but it performs automated testing of the
cgroupv2 BPF attached filters. It runs the following checks:
* Simple filter attachment
* Application of filters to child cgroups
* Overriding filters on child cgroups
* Checking that this still works when the parent filter is removedThe filters that are used here are simply allow all / deny all filters, so
it isn't checking the actual functionality of the filters, but rather
the behaviour around detachment / attachment. If net_cls is enabled,
this test will fail.Signed-off-by: Sargun Dhillon
Acked-by: Alexei Starovoitov
Signed-off-by: David S. Miller -
This patch modifies test_current_task_under_cgroup_user. The test has
several helpers around creating a temporary environment for cgroup
testing, and moving the current task around cgroups. This set of
helpers can then be used in other tests.Signed-off-by: Sargun Dhillon
Acked-by: Alexei Starovoitov
Signed-off-by: David S. Miller -
silence some of the clang compiler warnings like:
include/linux/fs.h:2693:9: warning: comparison of unsigned enum expression < 0 is always false
arch/x86/include/asm/processor.h:491:30: warning: taking address of packed member 'sp0' of class or structure 'x86_hw_tss' may result in an unaligned pointer value
include/linux/cgroup-defs.h:326:16: warning: field 'cgrp' with variable sized type 'struct cgroup' not at the end of a struct or class is a GNU extension
since they add too much noise to samples/bpf/ build.Signed-off-by: Alexei Starovoitov
Signed-off-by: David S. Miller -
Couple conflicts resolved here:
1) In the MACB driver, a bug fix to properly initialize the
RX tail pointer properly overlapped with some changes
to support variable sized rings.2) In XGBE we had a "CONFIG_PM" --> "CONFIG_PM_SLEEP" fix
overlapping with a reorganization of the driver to support
ACPI, OF, as well as PCI variants of the chip.3) In 'net' we had several probe error path bug fixes to the
stmmac driver, meanwhile a lot of this code was cleaned up
and reorganized in 'net-next'.4) The cls_flower classifier obtained a helper function in
'net-next' called __fl_delete() and this overlapped with
Daniel Borkamann's bug fix to use RCU for object destruction
in 'net'. It also overlapped with Jiri's change to guard
the rhashtable_remove_fast() call with a check against
tc_skip_sw().5) In mlx4, a revert bug fix in 'net' overlapped with some
unrelated changes in 'net-next'.6) In geneve, a stale header pointer after pskb_expand_head()
bug fix in 'net' overlapped with a large reorganization of
the same code in 'net-next'. Since the 'net-next' code no
longer had the bug in question, there was nothing to do
other than to simply take the 'net-next' hunks.Signed-off-by: David S. Miller
03 Dec, 2016
3 commits
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Add examples preventing a process in a cgroup from opening a socket
based family, protocol and type.Signed-off-by: David Ahern
Acked-by: Alexei Starovoitov
Signed-off-by: David S. Miller -
Add support for section names starting with cgroup/skb and cgroup/sock.
Signed-off-by: David Ahern
Acked-by: Alexei Starovoitov
Signed-off-by: David S. Miller -
Add a simple program to demonstrate the ability to attach a bpf program
to a cgroup that sets sk_bound_dev_if for AF_INET{6} sockets when they
are created.Signed-off-by: David Ahern
Acked-by: Alexei Starovoitov
Signed-off-by: David S. Miller
02 Dec, 2016
1 commit
-
Adds a series of tests to verify the functionality of attaching
BPF programs at LWT hooks.Also adds a sample which collects a histogram of packet sizes which
pass through an LWT hook.$ ./lwt_len_hist.sh
Starting netserver with host 'IN(6)ADDR_ANY' port '12865' and family AF_UNSPEC
MIGRATED TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 192.168.253.2 () port 0 AF_INET : demo
Recv Send Send
Socket Socket Message Elapsed
Size Size Size Time Throughput
bytes bytes bytes secs. 10^6bits/sec87380 16384 16384 10.00 39857.69
1 -> 1 : 0 | |
2 -> 3 : 0 | |
4 -> 7 : 0 | |
8 -> 15 : 0 | |
16 -> 31 : 0 | |
32 -> 63 : 22 | |
64 -> 127 : 98 | |
128 -> 255 : 213 | |
256 -> 511 : 1444251 |******** |
512 -> 1023 : 660610 |*** |
1024 -> 2047 : 535241 |** |
2048 -> 4095 : 19 | |
4096 -> 8191 : 180 | |
8192 -> 16383 : 5578023 |************************************* |
16384 -> 32767 : 632099 |*** |
32768 -> 65535 : 6575 | |Signed-off-by: Thomas Graf
Acked-by: Alexei Starovoitov
Signed-off-by: David S. Miller
01 Dec, 2016
1 commit
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Fix the following build error:
HOSTCC samples/bpf/test_lru_dist.o
../samples/bpf/test_lru_dist.c:25:22: fatal error: bpf_util.h: No such file or directoryThis is due to objtree != srctree.
Use srctree, since that's where bpf_util.h is located.Fixes: e00c7b216f34 ("bpf: fix multiple issues in selftest suite and samples")
Signed-off-by: Alexei Starovoitov
Acked-by: Daniel Borkmann
Tested-by: David Ahern
Signed-off-by: David S. Miller
30 Nov, 2016
1 commit
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This patch modifies test_cgrp2_attach to use getopt so we can use standard
command line parsing.It also adds an option to run the program in detach only mode. This does
not attach a new filter at the cgroup, but only runs the detach command.Lastly, it changes the attach code to not detach and then attach. It relies
on the 'hotswap' behaviour of CGroup BPF programs to be able to change
in-place. If detach-then-attach behaviour needs to be tested, the example
can be run in detach only mode prior to attachment.Signed-off-by: Sargun Dhillon
Acked-by: Alexei Starovoitov
Signed-off-by: David S. Miller
29 Nov, 2016
1 commit
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The files "sampleip_kern.c" and "trace_event_kern.c" directly access
"ctx->regs.ip" which is not available on s390x. Fix this and use the
PT_REGS_IP() macro instead.Also fix the macro for s390x and use "psw.addr" from "pt_regs".
Reported-by: Zvonko Kosic
Signed-off-by: Michael Holzheu
Acked-by: Alexei Starovoitov
Signed-off-by: David S. Miller
28 Nov, 2016
1 commit
-
1) The test_lru_map and test_lru_dist fails building on my machine since
the sys/resource.h header is not included.2) test_verifier fails in one test case where we try to call an invalid
function, since the verifier log output changed wrt printing function
names.3) Current selftest suite code relies on sysconf(_SC_NPROCESSORS_CONF) for
retrieving the number of possible CPUs. This is broken at least in our
scenario and really just doesn't work.glibc tries a number of things for retrieving _SC_NPROCESSORS_CONF.
First it tries equivalent of /sys/devices/system/cpu/cpu[0-9]* | wc -l,
if that fails, depending on the config, it either tries to count CPUs
in /proc/cpuinfo, or returns the _SC_NPROCESSORS_ONLN value instead.
If /proc/cpuinfo has some issue, it returns just 1 worst case. This
oddity is nothing new [1], but semantics/behaviour seems to be settled.
_SC_NPROCESSORS_ONLN will parse /sys/devices/system/cpu/online, if
that fails it looks into /proc/stat for cpuX entries, and if also that
fails for some reason, /proc/cpuinfo is consulted (and returning 1 if
unlikely all breaks down).While that might match num_possible_cpus() from the kernel in some
cases, it's really not guaranteed with CPU hotplugging, and can result
in a buffer overflow since the array in user space could have too few
number of slots, and on perpcu map lookup, the kernel will write beyond
that memory of the value buffer.William Tu reported such mismatches:
[...] The fact that sysconf(_SC_NPROCESSORS_CONF) != num_possible_cpu()
happens when CPU hotadd is enabled. For example, in Fusion when
setting vcpu.hotadd = "TRUE" or in KVM, setting ./qemu-system-x86_64
-smp 2, maxcpus=4 ... the num_possible_cpu() will be 4 and sysconf()
will be 2 [2]. [...]Documentation/cputopology.txt says /sys/devices/system/cpu/possible
outputs cpu_possible_mask. That is the same as in num_possible_cpus(),
so first step would be to fix the _SC_NPROCESSORS_CONF calls with our
own implementation. Later, we could add support to bpf(2) for passing
a mask via CPU_SET(3), for example, to just select a subset of CPUs.BPF samples code needs this fix as well (at least so that people stop
copying this). Thus, define bpf_num_possible_cpus() once in selftests
and import it from there for the sample code to avoid duplicating it.
The remaining sysconf(_SC_NPROCESSORS_CONF) in samples are unrelated.After all three issues are fixed, the test suite runs fine again:
# make run_tests | grep self
selftests: test_verifier [PASS]
selftests: test_maps [PASS]
selftests: test_lru_map [PASS]
selftests: test_kmod.sh [PASS][1] https://www.sourceware.org/ml/libc-alpha/2011-06/msg00079.html
[2] https://www.mail-archive.com/netdev@vger.kernel.org/msg121183.htmlFixes: 3059303f59cf ("samples/bpf: update tracex[23] examples to use per-cpu maps")
Fixes: 86af8b4191d2 ("Add sample for adding simple drop program to link")
Fixes: df570f577231 ("samples/bpf: unit test for BPF_MAP_TYPE_PERCPU_ARRAY")
Fixes: e15596717948 ("samples/bpf: unit test for BPF_MAP_TYPE_PERCPU_HASH")
Fixes: ebb676daa1a3 ("bpf: Print function name in addition to function id")
Fixes: 5db58faf989f ("bpf: Add tests for the LRU bpf_htab")
Signed-off-by: Daniel Borkmann
Cc: William Tu
Acked-by: Alexei Starovoitov
Signed-off-by: David S. Miller
26 Nov, 2016
1 commit
-
Add a simple userpace program to demonstrate the new API to attach eBPF
programs to cgroups. This is what it does:* Create arraymap in kernel with 4 byte keys and 8 byte values
* Load eBPF program
The eBPF program accesses the map passed in to store two pieces of
information. The number of invocations of the program, which maps
to the number of packets received, is stored to key 0. Key 1 is
incremented on each iteration by the number of bytes stored in
the skb.* Detach any eBPF program previously attached to the cgroup
* Attach the new program to the cgroup using BPF_PROG_ATTACH
* Once a second, read map[0] and map[1] to see how many bytes and
packets were seen on any socket of tasks in the given cgroup.The program takes a cgroup path as 1st argument, and either "ingress"
or "egress" as 2nd. Optionally, "drop" can be passed as 3rd argument,
which will make the generated eBPF program return 0 instead of 1, so
the kernel will drop the packet.libbpf gained two new wrappers for the new syscall commands.
Signed-off-by: Daniel Mack
Acked-by: Alexei Starovoitov
Signed-off-by: David S. Miller
25 Nov, 2016
2 commits
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llvm can emit relocations into sections other than program code
(like debug info sections). Ignore them during parsing of elf fileSigned-off-by: Alexei Starovoitov
Acked-by: Daniel Borkmann
Signed-off-by: David S. Miller -
since llvm commit "Do not expand UNDEF SDNode during insn selection lowering"
llvm will generate code that uses uninitialized registers for cases
where C code is actually uses uninitialized data.
So this sockex2 example is technically broken.
Fix it by initializing on the stack variable fully.
Also increase verifier buffer limit, since verifier output
may not fit in 64k for this sockex2 code depending on llvm version.Signed-off-by: Alexei Starovoitov
Acked-by: Daniel Borkmann
Signed-off-by: David S. Miller
16 Nov, 2016
1 commit
-
This patch has some unit tests and a test_lru_dist.
The test_lru_dist reads in the numeric keys from a file.
The files used here are generated by a modified fio-genzipf tool
originated from the fio test suit. The sample data file can be
found here: https://github.com/iamkafai/bpf-lruThe zipf.* data files have 100k numeric keys and the key is also
ranged from 1 to 100k.The test_lru_dist outputs the number of unique keys (nr_unique).
F.e. The following means, 61239 of them is unique out of 100k keys.
nr_misses means it cannot be found in the LRU map, so nr_misses
must be >= nr_unique. test_lru_dist also simulates a perfect LRU
map as a comparison:[root@arch-fb-vm1 ~]# ~/devshare/fb-kernel/linux/samples/bpf/test_lru_dist \
/root/zipf.100k.a1_01.out 4000 1
...
test_parallel_lru_dist (map_type:9 map_flags:0x0):
task:0 BPF LRU: nr_unique:23093(/100000) nr_misses:31603(/100000)
task:0 Perfect LRU: nr_unique:23093(/100000 nr_misses:34328(/100000)
....
test_parallel_lru_dist (map_type:9 map_flags:0x2):
task:0 BPF LRU: nr_unique:23093(/100000) nr_misses:31710(/100000)
task:0 Perfect LRU: nr_unique:23093(/100000 nr_misses:34328(/100000)[root@arch-fb-vm1 ~]# ~/devshare/fb-kernel/linux/samples/bpf/test_lru_dist \
/root/zipf.100k.a0_01.out 40000 1
...
test_parallel_lru_dist (map_type:9 map_flags:0x0):
task:0 BPF LRU: nr_unique:61239(/100000) nr_misses:67054(/100000)
task:0 Perfect LRU: nr_unique:61239(/100000 nr_misses:66993(/100000)
...
test_parallel_lru_dist (map_type:9 map_flags:0x2):
task:0 BPF LRU: nr_unique:61239(/100000) nr_misses:67068(/100000)
task:0 Perfect LRU: nr_unique:61239(/100000 nr_misses:66993(/100000)LRU map has also been added to map_perf_test:
/* Global LRU */
[root@kerneltest003.31.prn1 ~]# for i in 1 4 8; do echo -n "$i cpus: "; \
./map_perf_test 16 $i | awk '{r += $3}END{print r " updates"}'; done
1 cpus: 2934082 updates
4 cpus: 7391434 updates
8 cpus: 6500576 updates/* Percpu LRU */
[root@kerneltest003.31.prn1 ~]# for i in 1 4 8; do echo -n "$i cpus: "; \
./map_perf_test 32 $i | awk '{r += $3}END{print r " updates"}'; done
1 cpus: 2896553 updates
4 cpus: 9766395 updates
8 cpus: 17460553 updatesSigned-off-by: Martin KaFai Lau
Acked-by: Alexei Starovoitov
Signed-off-by: David S. Miller
15 Nov, 2016
1 commit
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Several cases of bug fixes in 'net' overlapping other changes in
'net-next-.Signed-off-by: David S. Miller
13 Nov, 2016
1 commit
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The test creates two netns, ns1 and ns2. The host (the default netns)
has an ipip or ip6tnl dev configured for tunneling traffic to the ns2.ping VIPS from ns1 host ns2 (VIPs at loopback)
The test is to have ns1 pinging VIPs configured at the loopback
interface in ns2.The VIPs are 10.10.1.102 and 2401:face::66 (which are configured
at lo@ns2). [Note: 0x66 => 102].At ns1, the VIPs are routed _via_ the host.
At the host, bpf programs are installed at the veth to redirect packets
from a veth to the ipip/ip6tnl. The test is configured in a way so
that both ingress and egress can be tested.At ns2, the ipip/ip6tnl dev is configured with the local and remote address
specified. The return path is routed to the dev ipip/ip6tnl.During egress test, the host also locally tests pinging the VIPs to ensure
that bpf_redirect at egress also works for the direct egress (i.e. not
forwarding from dev ve1 to ve2).Acked-by: Alexei Starovoitov
Signed-off-by: Martin KaFai Lau
Signed-off-by: David S. Miller
31 Oct, 2016
1 commit
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Mostly simple overlapping changes.
For example, David Ahern's adjacency list revamp in 'net-next'
conflicted with an adjacency list traversal bug fix in 'net'.Signed-off-by: David S. Miller
30 Oct, 2016
2 commits
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Pull networking fixes from David Miller:
"Lots of fixes, mostly drivers as is usually the case.1) Don't treat zero DMA address as invalid in vmxnet3, from Alexey
Khoroshilov.2) Fix element timeouts in netfilter's nft_dynset, from Anders K.
Pedersen.3) Don't put aead_req crypto struct on the stack in mac80211, from
Ard Biesheuvel.4) Several uninitialized variable warning fixes from Arnd Bergmann.
5) Fix memory leak in cxgb4, from Colin Ian King.
6) Fix bpf handling of VLAN header push/pop, from Daniel Borkmann.
7) Several VRF semantic fixes from David Ahern.
8) Set skb->protocol properly in ip6_tnl_xmit(), from Eli Cooper.
9) Socket needs to be locked in udp_disconnect(), from Eric Dumazet.
10) Div-by-zero on 32-bit fix in mlx4 driver, from Eugenia Emantayev.
11) Fix stale link state during failover in NCSCI driver, from Gavin
Shan.12) Fix netdev lower adjacency list traversal, from Ido Schimmel.
13) Propvide proper handle when emitting notifications of filter
deletes, from Jamal Hadi Salim.14) Memory leaks and big-endian issues in rtl8xxxu, from Jes Sorensen.
15) Fix DESYNC_FACTOR handling in ipv6, from Jiri Bohac.
16) Several routing offload fixes in mlxsw driver, from Jiri Pirko.
17) Fix broadcast sync problem in TIPC, from Jon Paul Maloy.
18) Validate chunk len before using it in SCTP, from Marcelo Ricardo
Leitner.19) Revert a netns locking change that causes regressions, from Paul
Moore.20) Add recursion limit to GRO handling, from Sabrina Dubroca.
21) GFP_KERNEL in irq context fix in ibmvnic, from Thomas Falcon.
22) Avoid accessing stale vxlan/geneve socket in data path, from
Pravin Shelar"* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (189 commits)
geneve: avoid using stale geneve socket.
vxlan: avoid using stale vxlan socket.
qede: Fix out-of-bound fastpath memory access
net: phy: dp83848: add dp83822 PHY support
enic: fix rq disable
tipc: fix broadcast link synchronization problem
ibmvnic: Fix missing brackets in init_sub_crq_irqs
ibmvnic: Fix releasing of sub-CRQ IRQs in interrupt context
Revert "ibmvnic: Fix releasing of sub-CRQ IRQs in interrupt context"
arch/powerpc: Update parameters for csum_tcpudp_magic & csum_tcpudp_nofold
net/mlx4_en: Save slave ethtool stats command
net/mlx4_en: Fix potential deadlock in port statistics flow
net/mlx4: Fix firmware command timeout during interrupt test
net/mlx4_core: Do not access comm channel if it has not yet been initialized
net/mlx4_en: Fix panic during reboot
net/mlx4_en: Process all completions in RX rings after port goes up
net/mlx4_en: Resolve dividing by zero in 32-bit system
net/mlx4_core: Change the default value of enable_qos
net/mlx4_core: Avoid setting ports to auto when only one port type is supported
net/mlx4_core: Fix the resource-type enum in res tracker to conform to FW spec
... -
Some of the sample files are causing issues when they are loaded with tc
and cls_bpf, meaning tc bails out while trying to parse the resulting ELF
file as program/map/etc sections are not present, which can be easily
spotted with readelf(1).Currently, BPF samples are including some of the kernel headers and mid
term we should change them to refrain from this, really. When dynamic
debugging is enabled, we bail out due to undeclared KBUILD_MODNAME, which
is easily overlooked in the build as clang spills this along with other
noisy warnings from various header includes, and llc still generates an
ELF file with mentioned characteristics. For just playing around with BPF
examples, this can be a bit of a hurdle to take.Just add a fake KBUILD_MODNAME as a band-aid to fix the issue, same is
done in xdp*_kern samples already.Fixes: 65d472fb007d ("samples/bpf: add 'pointer to packet' tests")
Fixes: 6afb1e28b859 ("samples/bpf: Add tunnel set/get tests.")
Fixes: a3f74617340b ("cgroup: bpf: Add an example to do cgroup checking in BPF")
Reported-by: Chandrasekar Kannan
Signed-off-by: Daniel Borkmann
Acked-by: Alexei Starovoitov
Signed-off-by: David S. Miller
18 Oct, 2016
2 commits
-
Add a start of a test suite for kernel selftests. This moves test_verifier
and test_maps over to tools/testing/selftests/bpf/ along with various
code improvements and also adds a script for invoking test_bpf module.
The test suite can simply be run via selftest framework, f.e.:# cd tools/testing/selftests/bpf/
# make
# make run_testsBoth test_verifier and test_maps were kind of misplaced in samples/bpf/
directory and we were looking into adding them to selftests for a while
now, so it can be picked up by kbuild bot et al and hopefully also get
more exposure and thus new test case additions.Signed-off-by: Daniel Borkmann
Acked-by: Alexei Starovoitov
Signed-off-by: David S. Miller -
Add several spill/fill tests. Besides others, one that performs xadd
on the spilled register, one ldx/stx test where different types are
spilled from two branches and read out from common path. Verfier does
handle all correctly.Signed-off-by: Daniel Borkmann
Acked-by: Alexei Starovoitov
Signed-off-by: David S. Miller
15 Oct, 2016
1 commit
-
…/kernel/git/shuah/linux-kselftest
Pull kselftest updates from Shuah Khan:
"This update consists of:- Fixes and improvements to existing tests
- Moving code from Documentation to selftests, samples, and tools:
* Moves dnotify_test, prctl, ptp, vDSO, ia64, watchdog, and
networking tests from Documentation to selftests.* Moves mic/mpssd, misc-devices/mei, timers, watchdog, auxdisplay,
and blackfin examples from Documentation to samples.* Moves accounting, laptops/dslm, and pcmcia/crc32hash tools from
Documentation to tools.* Deletes BUILD_DOCSRC and its dependencies"
* tag 'linux-kselftest-4.9-rc1-update' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: (21 commits)
selftests/futex: Check ANSI terminal color support
Doc: update 00-INDEX files to reflect the runnable code move
samples: move blackfin gptimers-example from Documentation
tools: move pcmcia crc32hash tool from Documentation
tools: move laptops dslm tool from Documentation
tools: move accounting tool from Documentation
samples: move auxdisplay example code from Documentation
samples: move watchdog example code from Documentation
samples: move timers example code from Documentation
samples: move misc-devices/mei example code from Documentation
samples: move mic/mpssd example code from Documentation
selftests: Move networking/timestamping from Documentation
selftests: move watchdog tests from Documentation/watchdog
selftests: move ia64 tests from Documentation/ia64
selftests: move vDSO tests from Documentation/vDSO
selftests: move ptp tests from Documentation/ptp
selftests: move prctl tests from Documentation/prctl
selftests: move dnotify_test from Documentation/filesystems
selftests/timers: Add missing error code assignment before test
selftests/zram: replace ZRAM_LZ4_COMPRESS
...
10 Oct, 2016
1 commit
-
Move blackfin gptimers-example to samples and remove it from Documentation
Makefile. Update samples Kconfig and Makefile to build gptimers-example.blackfin is the last CONFIG_BUILD_DOCSRC target in Documentation/Makefile.
Hence this patch also includes changes to remove CONFIG_BUILD_DOCSRC from
Makefile and lib/Kconfig.debug and updates VIDEO_PCI_SKELETON dependency
on BUILD_DOCSRC.Documentation/Makefile is not deleted to avoid braking make htmldocs and
make distclean.Acked-by: Michal Marek
Acked-by: Jonathan Corbet
Reviewed-by: Kees Cook
Reported-by: Valentin Rothberg
Reported-by: Paul Gortmaker
Signed-off-by: Shuah Khan
07 Oct, 2016
1 commit
-
Pull rpmsg updates from Bjorn Andersson:
"The bulk of these patches involve splitting the rpmsg implementation
into a framework/API part and a virtio specific backend part. It then
adds the Qualcomm Shared Memory Device (SMD) as an additional
supported wire format.Also included is a set of code style cleanups that have been lingering
for a while"* tag 'rpmsg-v4.9' of git://github.com/andersson/remoteproc: (26 commits)
rpmsg: smd: fix dependency on QCOM_SMD=n
rpmsg: Introduce Qualcomm SMD backend
rpmsg: Allow callback to return errors
rpmsg: Move virtio specifics from public header
rpmsg: virtio: Hide vrp pointer from the public API
rpmsg: Hide rpmsg indirection tables
rpmsg: Split rpmsg core and virtio backend
rpmsg: Split off generic tail of create_channel()
rpmsg: Move helper for finding rpmsg devices to core
rpmsg: Move endpoint related interface to rpmsg core
rpmsg: Indirection table for rpmsg_endpoint operations
rpmsg: Move rpmsg_device API to new file
rpmsg: Introduce indirection table for rpmsg_device operations
rpmsg: Clean up rpmsg device vs channel naming
rpmsg: Make rpmsg_create_ept() take channel_info struct
rpmsg: rpmsg_send() operations takes rpmsg_endpoint
rpmsg: Name rpmsg devices based on channel id
rpmsg: Enable matching devices with drivers based on DT
rpmsg: Drop prototypes for non-existing functions
samples/rpmsg: add support for multiple instances
...
29 Sep, 2016
1 commit
-
Suppose you have a map array value that is something like this
struct foo {
unsigned iter;
int array[SOME_CONSTANT];
};You can easily insert this into an array, but you cannot modify the contents of
foo->array[] after the fact. This is because we have no way to verify we won't
go off the end of the array at verification time. This patch provides a start
for this work. We accomplish this by keeping track of a minimum and maximum
value a register could be while we're checking the code. Then at the time we
try to do an access into a MAP_VALUE we verify that the maximum offset into that
region is a valid access into that memory region. So in practice, code such as
thisunsigned index = 0;
if (foo->iter >= SOME_CONSTANT)
foo->iter = index;
else
index = foo->iter++;
foo->array[index] = bar;would be allowed, as we can verify that index will always be between 0 and
SOME_CONSTANT-1. If you wish to use signed values you'll have to have an extra
check to make sure the index isn't less than 0, or do something like index %=
SOME_CONSTANT.Signed-off-by: Josef Bacik
Acked-by: Alexei Starovoitov
Signed-off-by: David S. Miller
27 Sep, 2016
2 commits
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seccomp_phase1() does not exist anymore. Instead, update sample to use
__seccomp_filter(). While at it, set max locked memory to unlimited.Signed-off-by: Naveen N. Rao
Acked-by: Alexei Starovoitov
Signed-off-by: David S. Miller -
These samples fail to compile as 'struct flow_keys' conflicts with
definition in net/flow_dissector.h. Fix the same by renaming the
structure used in the sample.Signed-off-by: Naveen N. Rao
Acked-by: Alexei Starovoitov
Signed-off-by: David S. Miller
24 Sep, 2016
4 commits
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Move auxdisplay examples to samples and remove it from Documentation
Makefile. Create a new Makefile to build auxdisplay. It can be built
from top level directory or from auxdisplay directory:Run make -C samples/auxdisplay or cd samples/auxdisplay; make
Acked-by: Jonathan Corbet
Signed-off-by: Shuah Khan -
Move watchdog examples to samples and remove it from Documentation
Makefile. Create a new Makefile to build watchdog. It can be built
from top level directory or from watchdog directory:Run make -C samples/watchdog or cd samples/watchdog; make
Acked-by: Jonathan Corbet
Signed-off-by: Shuah Khan -
Move timers examples to samples and remove it from Documentation
Makefile. Create a new Makefile to build timers. It can be built
from top level directory or from timers directory:Run make -C samples/timers or cd samples/timers; make
Acked-by: Jonathan Corbet
Acked-by: Clemens Ladisch
Signed-off-by: Shuah Khan -
Move misc-devices/mei examples to samples/mei and remove it from
Documentation Makefile. Delete misc-devices/Makefile.Create a new Makefile to build samples/mei. It can be built from top
level directory or from mei directory:Run make -C samples/mei or cd samples/mei; make
Acked-by: Jonathan Corbet
Acked-by: Greg Kroah-Hartman
Acked-by: Tomas Winkler
Signed-off-by: Shuah Khan
21 Sep, 2016
2 commits
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Add couple of test cases for direct write and the negative size issue, and
also adjust the direct packet access test4 since it asserts that writes are
not possible, but since we've just added support for writes, we need to
invert the verdict to ACCEPT, of course. Summary: 133 PASSED, 0 FAILED.Signed-off-by: Daniel Borkmann
Acked-by: Alexei Starovoitov
Signed-off-by: David S. Miller -
Move mic/mpssd examples to samples and remove it from Documentation
Makefile. Create a new Makefile to build mic/mpssd. It can be built
from top level directory or from mic/mpssd directory:Run make -C samples/mic/mpssd or cd samples/mic/mpssd; make
Acked-by: Jonathan Corbet
Signed-off-by: Shuah Khan
17 Sep, 2016
2 commits
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the test creates 3 namespaces with veth connected via bridge.
First two namespaces simulate two different hosts with the same
IPv4 and IPv6 addresses configured on the tunnel interface and they
communicate with outside world via standard tunnels.
Third namespace creates collect_md tunnel that is driven by BPF
program which selects different remote host (either first or
second namespace) based on tcp dest port number while tcp dst
ip is the same.
This scenario is rough approximation of load balancer use case.
The tests check both traditional tunnel configuration and collect_md mode.Signed-off-by: Alexei Starovoitov
Signed-off-by: David S. Miller -
extend existing tests for vxlan, geneve, gre to include IPIP tunnel.
It tests both traditional tunnel configuration and
dynamic via bpf helpers.Signed-off-by: Alexei Starovoitov
Signed-off-by: David S. Miller
09 Sep, 2016
2 commits
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Some rpmsg backends support holding on to and redelivering messages upon
failed handling of them, so provide a way for the callback to report and
error and allow the backends to handle this.Signed-off-by: Bjorn Andersson
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The rpmsg device representing struct is called rpmsg_channel and the
variable name used throughout is rpdev, with the communication happening
on endpoints it's clearer to just call this a "device" in a public API.Signed-off-by: Bjorn Andersson
