On 05/21/2019 03:46 PM, Björn Töpel wrote:
> When using 32-bit subregisters (ALU32), the RISC-V JIT would not clear
> the high 32-bits of the target register and therefore generate
> incorrect code.
>
> E.g., in the following code:
>
> $ cat test.c
> unsigned int f(unsigned long long a,
>
etworking/af_xdp.rst:326: WARNING: Literal block expected;
> none found.
>
> Fixes: 0f4a9b7d4ecb ("xsk: add FAQ to facilitate for first time users")
>
> Signed-off-by: Randy Dunlap
> Cc: Magnus Karlsson
> Cc: Daniel Borkmann
Applied, thanks!
On 05/21/2019 09:52 AM, Lorenz Bauer wrote:
> __bpf_skc_lookup takes a socket tuple and the length of the
> tuple as an argument. Based on the length, it decides which
> address family to pass to the helper function sk_lookup.
>
> In case of AF_INET6, it fails to verify that the length
> of the tu
On 05/17/2019 11:21 PM, Martin KaFai Lau wrote:
> The BPF_FUNC_sk_lookup_xxx helpers return RET_PTR_TO_SOCKET_OR_NULL.
> Meaning a fullsock ptr and its fullsock's fields in bpf_sock can be
> accessed, e.g. type, protocol, mark and priority.
> Some new helper, like bpf_sk_storage_get(), also expects
On 05/19/2019 11:05 AM, Chang-Hsien Tsai wrote:
> If the trace for read is larger than 4096,
> the return value sz will be 4096.
> This results in off-by-one error on buf.
>
> static char buf[4096];
> ssize_t sz;
>
> sz = read(trace_fd, buf, sizeof(buf));
> if (sz > 0) {
>
Merge window is closed, so new round begins as usual.
Thanks everyone,
Daniel
On 05/22/2019 12:20 PM, Lorenzo Bianconi wrote:
>> On Tue, 2019-05-21 at 14:59 +0200, Lorenzo Bianconi wrote:
>>> Currently if we add a filter to the ingress qdisc (e.g matchall) the
>>> filter data are reported even in the egress path. The issue can be
>>> triggered with the following reproducer:
On 05/21/2019 04:12 PM, Björn Töpel wrote:
> On Tue, 21 May 2019 at 16:02, Daniel Borkmann wrote:
>> On 05/21/2019 03:46 PM, Björn Töpel wrote:
>>> When using 32-bit subregisters (ALU32), the RISC-V JIT would not clear
>>> the high 32-bits of the target regi
On 05/23/2019 08:38 AM, Y Song wrote:
> On Wed, May 22, 2019 at 1:46 PM Björn Töpel wrote:
>> On Wed, 22 May 2019 at 20:13, Y Song wrote:
>>> On Wed, May 22, 2019 at 2:25 AM Björn Töpel wrote:
Add three tests to test_verifier/basic_instr that make sure that the
high 32-bits of the
On 05/22/2019 12:01 PM, Jakub Sitnicki wrote:
> Once psock gets unlinked from its sock (sk_psock_drop), user-space can
> still trigger a call to sk->sk_write_space by setting TCP_NOTSENT_LOWAT
> socket option. This causes a null-ptr-deref because we try to read
> psock->saved_write_space from sk_ps
On 05/22/2019 05:14 AM, Alexei Starovoitov wrote:
> Patch 1 - jmp sequence limit
> Patch 2 - improve existing tests
> Patch 3 - add pyperf-based realistic bpf program that takes advantage
> of higher limit and use it as a stress test
>
> v1->v2: fixed nit in patch 3. added Andrii's acks
>
> Alexe
On 05/22/2019 07:39 AM, Yonghong Song wrote:
> This patch tries to solve the following specific use case.
>
> Currently, bpf program can already collect stack traces
> through kernel function get_perf_callchain()
> when certain events happens (e.g., cache miss counter or
> cpu clock counter overfl
On 05/23/2019 05:58 PM, Yonghong Song wrote:
> On 5/23/19 8:41 AM, Daniel Borkmann wrote:
>> On 05/22/2019 07:39 AM, Yonghong Song wrote:
>>> This patch tries to solve the following specific use case.
>>>
>>> Currently, bpf program can already collect stac
On 05/23/2019 11:30 PM, Yonghong Song wrote:
> On 5/23/19 2:07 PM, Yonghong Song wrote:
>> On 5/23/19 9:28 AM, Daniel Borkmann wrote:
>>> On 05/23/2019 05:58 PM, Yonghong Song wrote:
>>>> On 5/23/19 8:41 AM, Daniel Borkmann wrote:
>>>>> On 05/22/20
On 05/23/2019 05:48 PM, John Fastabend wrote:
> Backlog work for psock (sk_psock_backlog) might sleep while waiting
> for memory to free up when sending packets. However, while sleeping
> the socket may be closed and removed from the map by the user space
> side.
>
> This breaks an assumption in s
On 05/22/2019 05:17 AM, Alexei Starovoitov wrote:
> Convert explored_states array into hash table and use simple hash to
> reduce verifier peak memory consumption for programs with bpf2bpf calls.
> More details in patch 3.
>
> v1->v2: fixed Jakub's small nit in patch 1
>
> Alexei Starovoitov (3):
On 05/24/2019 06:05 PM, John Hurley wrote:
> TC hooks allow the application of filters and actions to packets at both
> ingress and egress of the network stack. It is possible, with poor
> configuration, that this can produce loops whereby an ingress hook calls
> a mirred egress action that has an
On 05/24/2019 05:01 PM, John Fastabend wrote:
> Backlog work for psock (sk_psock_backlog) might sleep while waiting
> for memory to free up when sending packets. However, while sleeping
> the socket may be closed and removed from the map by the user space
> side.
>
> This breaks an assumption in s
On 05/24/2019 01:54 AM, Yonghong Song wrote:
>
>
> On 5/23/19 4:08 PM, Daniel Borkmann wrote:
>> On 05/23/2019 11:30 PM, Yonghong Song wrote:
>>> On 5/23/19 2:07 PM, Yonghong Song wrote:
>>>> On 5/23/19 9:28 AM, Daniel Borkmann wrote:
>>>>> On
On 05/23/2019 11:47 PM, Yonghong Song wrote:
> This patch tries to solve the following specific use case.
>
> Currently, bpf program can already collect stack traces
> through kernel function get_perf_callchain()
> when certain events happens (e.g., cache miss counter or
> cpu clock counter overf
On 05/23/2019 11:47 PM, Yonghong Song wrote:
> This patch tries to solve the following specific use case.
>
> Currently, bpf program can already collect stack traces
> through kernel function get_perf_callchain()
> when certain events happens (e.g., cache miss counter or
> cpu clock counter overfl
On 05/24/2019 11:39 PM, Daniel Borkmann wrote:
> On 05/23/2019 11:47 PM, Yonghong Song wrote:
>> This patch tries to solve the following specific use case.
>>
>> Currently, bpf program can already collect stack traces
>> through kernel function get_perf_callchain()
>
On 05/25/2019 12:20 AM, Yonghong Song wrote:
> On 5/24/19 2:39 PM, Daniel Borkmann wrote:
>> On 05/23/2019 11:47 PM, Yonghong Song wrote:
>>> This patch tries to solve the following specific use case.
>>>
>>> Currently, bpf program can already collect stac
On 05/25/2019 12:23 AM, Yonghong Song wrote:
> On 5/24/19 2:59 PM, Daniel Borkmann wrote:
>> On 05/24/2019 11:39 PM, Daniel Borkmann wrote:
>>> On 05/23/2019 11:47 PM, Yonghong Song wrote:
>>>> This patch tries to solve the following specific use case.
>>>&g
On 05/26/2019 02:01 AM, Andrii Nakryiko wrote:
> Auto-complete BTF IDs for `btf dump id` sub-command. List of possible BTF
> IDs is scavenged from loaded BPF programs that have associated BTFs, as
> there is currently no API in libbpf to fetch list of all BTFs in the
> system.
>
> Suggested-by: Qu
On 05/25/2019 08:57 PM, Yonghong Song wrote:
> Commit 8b401f9ed244 ("bpf: implement bpf_send_signal() helper")
> introduced bpf_send_signal() helper. If the context is nmi,
> the sending signal work needs to be deferred to irq_work.
> If the signal is invalid, the error will appear in irq_work
> an
On 05/26/2019 12:32 PM, Chang-Hsien Tsai wrote:
> use fgets() as the while loop condition.
>
> Signed-off-by: Chang-Hsien Tsai
Applied, thanks!
On 05/24/2019 12:36 PM, Quentin Monnet wrote:
> Hi,
> This series adds an option to bpftool to make it print additional
> information via libbpf and the kernel verifier when attempting to load
> programs.
>
> A new API function is added to libbpf in order to pass the log_level from
> bpftool with
On 05/25/2019 12:28 AM, Stanislav Fomichev wrote:
> Right now test_tunnel.sh always exits with success even if some
> of the subtests fail. Since the output is very verbose, it's
> hard to spot the issues with subtests. Let's fail the script
> if any subtest fails.
>
> Signed-off-by: Stanislav Fom
On 05/23/2019 09:24 AM, Daniel T. Lee wrote:
> This commit fixes style problem in samples/bpf/bpf_load.c
>
> Styles that have been changed are:
> - Magic string use of 'DEBUGFS'
> - Useless zero initialization of a global variable
> - Minor style fix with whitespace
>
> Signed-off-by: Daniel T
On 05/29/2019 11:57 AM, Jiong Wang wrote:
> JIT back-ends need to guarantee high 32-bit cleared whenever one eBPF insn
> write low 32-bit sub-register only. It is possible that some JIT back-ends
> have failed doing this and are silently generating wrong image.
>
> This set completes the unit test
On 05/29/2019 11:23 AM, Quentin Monnet wrote:
> There are two functions in libbpf that support passing a log_level
> parameter for the verifier for loading programs:
> bpf_object__load_xattr() and bpf_load_program_xattr(). Both accept an
> attribute object containing the log_level, and apply it to
On 05/29/2019 11:48 AM, Alan Maguire wrote:
> When building the tools/testing/selftest/bpf subdirectory,
> (running both a local directory "make" and a
> "make -C tools/testing/selftests/bpf") I keep hitting the
> following compilation error:
>
> prog_tests/flow_dissector.c: In function ‘create_ta
On 05/28/2019 09:02 PM, Alakesh Haloi wrote:
> Add missing header file following compiler warning
>
> prog_tests/flow_dissector.c: In function ‘tx_tap’:
> prog_tests/flow_dissector.c:175:9: warning: implicit declaration of function
> ‘writev’; did you mean ‘write’? [-Wimplicit-function-declaratio
On 05/28/2019 11:14 PM, Stanislav Fomichev wrote:
> Drop __rcu annotations and rcu read sections from bpf_prog_array
> helper functions. They are not needed since all existing callers
> call those helpers from the rcu update side while holding a mutex.
> This guarantees that use-after-free could no
On 05/29/2019 04:26 PM, Quentin Monnet wrote:
> There are two functions in libbpf that support passing a log_level
> parameter for the verifier for loading programs:
> bpf_object__load_xattr() and bpf_prog_load_xattr(). Both accept an
> attribute object containing the log_level, and apply it to the
On 05/29/2019 07:36 PM, Andrii Nakryiko wrote:
> This patch set is a collection of unrelated fixes for libbpf.
>
> Patch #1 fixes detection of corrupted BPF section w/ instructions.
> Patch #2 fixes possible errno clobbering.
> Patch #3 simplifies endianness check and brings it in line with few ot
On 06/03/2019 10:39 AM, Björn Töpel wrote:
> On Sat, 1 Jun 2019 at 20:12, Jonathan Lemon wrote:
>> On 31 May 2019, at 2:42, Björn Töpel wrote:
>>> From: Björn Töpel
>>>
>>> All XDP capable drivers need to implement the XDP_QUERY_PROG{,_HW}
>>> command of ndo_bpf. The query code is fairly generic.
On 06/03/2019 06:38 PM, Jonathan Lemon wrote:
> Currently, the AF_XDP code uses a separate map in order to
> determine if an xsk is bound to a queue. Instead of doing this,
> have bpf_map_lookup_elem() return the queue_id, as a way of
> indicating that there is a valid entry at the map index.
>
>
On 06/04/2019 04:54 PM, Daniel Borkmann wrote:
> On 06/03/2019 06:38 PM, Jonathan Lemon wrote:
>> Currently, the AF_XDP code uses a separate map in order to
>> determine if an xsk is bound to a queue. Instead of doing this,
>> have bpf_map_lookup_elem() return the
On 06/04/2019 04:35 AM, Hangbin Liu wrote:
> test_lirc_mode2_user is included in test_lirc_mode2.sh test and should
> not be run directly.
>
> Fixes: 6bdd533cee9a ("bpf: add selftest for lirc_mode2 type program")
> Signed-off-by: Hangbin Liu
Applied, thanks!
ressed in future through a different bpf_attach_type such
that this case can be distinguished from the regular recvmsg paths,
for example.
Fixes: 1cedee13d25a ("bpf: Hooks for sys_sendmsg")
Signed-off-by: Daniel Borkmann
Cc: Andrey Ignatov
Cc: Martynas Pumputis
---
include/linux/
ok .. [PASS]
Test case: recvmsg6: return code !ok .. [PASS]
Test case: recvmsg4: rewrite IP & port (asm) .. [PASS]
Test case: recvmsg6: rewrite IP & port (asm) .. [PASS]
[...]
Signed-off-by: Daniel Borkmann
---
tools/testing/selftests/bpf/test_sock_addr.c | 213 +++
On 06/06/2019 01:54 AM, Martin Lau wrote:
> On Wed, Jun 05, 2019 at 10:40:49PM +0200, Daniel Borkmann wrote:
>> Intention of cgroup bind/connect/sendmsg BPF hooks is to act transparently
>> to applications as also stated in original motivation in 7828f20e3779 ("Merge
>&g
On 06/06/2019 01:47 AM, Jakub Kicinski wrote:
> It seems like periodically someone posts patches to "fix"
> header includes. The issue is that samples expect the
> include path to have the uAPI headers (from usr/) first,
> and then tools/ headers, so that locally installed uAPI
> headers take prec
On 06/06/2019 02:13 AM, Alexei Starovoitov wrote:
> On Wed, Jun 5, 2019 at 5:09 PM Daniel Borkmann wrote:
>>
>>>> tools/bpf/bpftool/cgroup.c | 5 -
>>>> tools/include/uapi/linux/bpf.h | 2 ++
>>> Should the bpf.h sync to tools/ be in a separate
Sync BPF uapi header in order to pull in BPF_CGROUP_UDP{4,6}_RECVMSG
attach types. This is done and preferred as an extra patch in order
to ease sync of libbpf.
Signed-off-by: Daniel Borkmann
---
tools/include/uapi/linux/bpf.h | 2 ++
1 file changed, 2 insertions(+)
diff --git a/tools/include
lit off uapi header sync and bpftool bits (Martin, Alexei)
- Added missing bpftool doc and bash completion as well
Daniel Borkmann (4):
bpf: fix unconnected udp hooks
bpf: sync tooling uapi header
bpf, bpftool: enable recvmsg attach types
bpf: add further msg_name rewrite tests
ok .. [PASS]
Test case: recvmsg6: return code !ok .. [PASS]
Test case: recvmsg4: rewrite IP & port (asm) .. [PASS]
Test case: recvmsg6: rewrite IP & port (asm) .. [PASS]
[...]
Signed-off-by: Daniel Borkmann
---
tools/testing/selftests/bpf/test_sock_addr.c | 213 +
Trivial patch to bpftool in order to complete enabling attaching programs
to BPF_CGROUP_UDP{4,6}_RECVMSG.
Signed-off-by: Daniel Borkmann
---
tools/bpf/bpftool/Documentation/bpftool-cgroup.rst | 6 +-
tools/bpf/bpftool/Documentation/bpftool-prog.rst | 2 +-
tools/bpf/bpftool/bash
better addressed in future through a different bpf_attach_type such
that this case can be distinguished from the regular recvmsg paths,
for example.
Fixes: 1cedee13d25a ("bpf: Hooks for sys_sendmsg")
Signed-off-by: Daniel Borkmann
Cc: Andrey Ignatov
Cc: Martin KaFai Lau
Acke
On 06/06/2019 03:24 PM, Toke Høiland-Jørgensen wrote:
> From: Toke Høiland-Jørgensen
>
> The bpf_redirect_map() helper used by XDP programs doesn't return any
> indication of whether it can successfully redirect to the map index it was
> given. Instead, BPF programs have to track this themselves,
On 06/06/2019 08:15 PM, Jonathan Lemon wrote:
> On 6 Jun 2019, at 9:15, Toke Høiland-Jørgensen wrote:
>> Alexei Starovoitov writes:
>>> On Thu, Jun 6, 2019 at 8:51 AM Daniel Borkmann wrote:
>>>> On 06/06/2019 03:24 PM, Toke Høiland-Jørgensen wrote:
>
On 06/04/2019 07:31 PM, Andrii Nakryiko wrote:
> On Tue, Jun 4, 2019 at 6:45 AM Stanislav Fomichev wrote:
>> On 06/03, Stanislav Fomichev wrote:
BTF is mandatory for _any_ new feature.
>>> If something is easy to support without asking everyone to upgrade to
>>> a bleeding edge llvm, why not
On 06/06/2019 10:51 PM, Andrey Ignatov wrote:
> Andrey Ignatov [Thu, 2019-06-06 13:45 -0700]:
>> Daniel Borkmann [Thu, 2019-06-06 07:36 -0700]:
>>> Please refer to the patch 1/4 as the main patch with the details
>>> on the current sendmsg hook API limitations and prop
Add attach types to test_section_names.c and libbpf (Andrey)
- Added given Acks, rest as-is
v1 -> v2:
- Split off uapi header sync and bpftool bits (Martin, Alexei)
- Added missing bpftool doc and bash completion as well
Daniel Borkmann (6):
bpf: fix unconnected udp hooks
bpf: sync toolin
ressed in future through a different bpf_attach_type such
that this case can be distinguished from the regular recvmsg paths,
for example.
Fixes: 1cedee13d25a ("bpf: Hooks for sys_sendmsg")
Signed-off-by: Daniel Borkmann
Acked-by: Andrey Ignatov
Acked-by: Martin KaFai Lau
Acke
bbpf: attachable section(type) names are: [...]
Summary: 38 PASSED, 0 FAILED
Signed-off-by: Daniel Borkmann
---
tools/testing/selftests/bpf/test_section_names.c | 10 ++
1 file changed, 10 insertions(+)
diff --git a/tools/testing/selftests/bpf/test_section_names.c
b/tools/testing/
ok .. [PASS]
Test case: recvmsg6: return code !ok .. [PASS]
Test case: recvmsg4: rewrite IP & port (asm) .. [PASS]
Test case: recvmsg6: rewrite IP & port (asm) .. [PASS]
[...]
Signed-off-by: Daniel Borkmann
Acked-by: Andrey Ignatov
Acked-by: Martin KaFai Lau
---
tools/testing/se
Trivial patch to bpftool in order to complete enabling attaching programs
to BPF_CGROUP_UDP{4,6}_RECVMSG.
Signed-off-by: Daniel Borkmann
Acked-by: Andrey Ignatov
Acked-by: Martin KaFai Lau
---
tools/bpf/bpftool/Documentation/bpftool-cgroup.rst | 6 +-
tools/bpf/bpftool/Documentation
Sync BPF uapi header in order to pull in BPF_CGROUP_UDP{4,6}_RECVMSG
attach types. This is done and preferred as an extra patch in order
to ease sync of libbpf.
Signed-off-by: Daniel Borkmann
Acked-by: Andrey Ignatov
Acked-by: Martin KaFai Lau
---
tools/include/uapi/linux/bpf.h | 2 ++
1 file
Another trivial patch to libbpf in order to enable identifying and
attaching programs to BPF_CGROUP_UDP{4,6}_RECVMSG by section name.
Signed-off-by: Daniel Borkmann
---
tools/lib/bpf/libbpf.c | 4
1 file changed, 4 insertions(+)
diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c
32-bits for and/or/xor on ALU32
selftests: bpf: add zero extend checks for ALU32 and/or/xor
Chang-Hsien Tsai (1):
samples, bpf: fix to change the buffer size for read()
Daniel Borkmann (7):
Merge branch 'bpf-subreg-tests'
bpf: fix unconnected udp hooks
bpf:
On 06/07/2019 06:37 PM, Hechao Li wrote:
> Getting number of possible CPUs is commonly used for per-CPU BPF maps
> and perf_event_maps. Add a new API libbpf_num_possible_cpus() that
> helps user with per-CPU related operations and remove duplicate
> implementations in bpftool and selftests.
>
> v4
On 06/08/2019 01:25 AM, Roman Gushchin wrote:
> On 06/07/2019 06:37 PM, Hechao Li wrote:
>> Getting number of possible CPUs is commonly used for per-CPU BPF maps
>> and perf_event_maps. Add a new API libbpf_num_possible_cpus() that
>> helps user with per-CPU related operations and remove duplicate
On 7/16/19 12:13 AM, Alexei Starovoitov wrote:
> On Thu, Jul 4, 2019 at 1:53 AM Ilya Leoshkevich wrote:
>>
>> BPF_LDX_MEM is used to load the least significant byte of the retrieved
>> test_val.index, however, on big-endian machines it ends up retrieving
>> the most significant byte.
>>
>> Use the
On 7/12/19 7:25 PM, Andrii Nakryiko wrote:
> BTF size resolution logic isn't always resolving type size correctly, leading
> to erroneous map creation failures due to value size mismatch.
>
> This patch set:
> 1. fixes the issue (patch #1);
> 2. adds tests for trickier cases (patch #2);
> 3. and c
On 7/12/19 3:41 PM, Ilya Leoshkevich wrote:
> attach_probe test fails, because it cannot install a kprobe on a
> non-existent sys_nanosleep symbol.
>
> Use the correct symbol name for the nanosleep syscall on 64-bit s390.
> Don't bother adding one for 31-bit mode, since tests are compiled only
> i
On 7/12/19 3:56 PM, Ilya Leoshkevich wrote:
> When directories are used as prerequisites in Makefiles, they can cause
> a lot of unnecessary rebuilds, because a directory is considered changed
> whenever a file in this directory is added, removed or modified.
>
> If the only thing a target is inte
On 7/15/19 6:39 PM, Stanislav Fomichev wrote:
> When fixing selftests by adding support for wide stores, Yonghong
> reported that he had seen some examples where clang generates
> single u64 loads for two adjacent u32s as well:
> http://lore.kernel.org/netdev/a66c937f-94c0-eaf8-5b37-8587d66c0...@fb
On 7/15/19 11:11 AM, Ilya Leoshkevich wrote:
> While $ARCH can be relatively flexible (see Makefile and
> tools/scripts/Makefile.arch), $SRCARCH always corresponds to a directory
> name under arch/.
>
> Therefore, build samples with -D__TARGET_ARCH_$(SRCARCH), since that
> matches the expectations
On 7/12/19 3:59 PM, Ilya Leoshkevich wrote:
> Add a rule to put test_stub.o in $(OUTPUT) and change the references to
> it accordingly. This prevents test_stub.o from being created in the
> source directory.
>
> Signed-off-by: Ilya Leoshkevich
Applied, thanks!
On 7/12/19 7:44 PM, Andrii Nakryiko wrote:
> test_verifier tests can specify single- and multi-runs tests. Internally
> logic of handling them is duplicated. Get rid of it by making single run
> retval/data specification to be a first run spec.
>
> Cc: Krzesimir Nowak
> Signed-off-by: Andrii Nakr
On 7/19/19 7:37 PM, Jakub Kicinski wrote:
> On Fri, 19 Jul 2019 10:29:13 -0700, Jakub Kicinski wrote:
>> John says:
>>
>> Resolve a series of splats discovered by syzbot and an unhash
>> TLS issue noted by Eric Dumazet.
>
> Sorry for the delay, this code is quite tricky. According to my testing
>
On 7/19/19 4:34 PM, Arnaldo Carvalho de Melo wrote:
> Hi Daniel,
>
> Please consider pulling or applying from the patches, if someone
> has any issues, please holler,
>
> - Arnaldo
>
> Arnaldo Carvalho de Melo (2):
> libbpf: Fix endianness macro usage for some compilers
> libbpf: Avoid
On 7/19/19 11:06 AM, Ilya Leoshkevich wrote:
> "sendmsg6: rewrite IP & port (C)" fails on s390, because the code in
> sendmsg_v6_prog() assumes that (ctx->user_ip6[0] & 0x) refers to
> leading IPv6 address digits, which is not the case on big-endian
> machines.
>
> Since checking bitwise opera
Merge window is closed, therefore new round begins.
Thanks everyone,
Daniel
generated hence
knowledge of the counter value does not provide much value either way.
Signed-off-by: Daniel Borkmann
Cc: Eric Dumazet
Cc: Alexei Starovoitov
Cc: Willem de Bruijn
Cc: Martynas Pumputis
---
include/net/net_namespace.h | 1 -
include/uapi/linux/bpf.h| 4 ++--
net/core
Pull in updates in BPF helper function description.
Signed-off-by: Daniel Borkmann
---
tools/include/uapi/linux/bpf.h | 11 +++
1 file changed, 7 insertions(+), 4 deletions(-)
diff --git a/tools/include/uapi/linux/bpf.h b/tools/include/uapi/linux/bpf.h
index 4e455018da65..a5aa7d3ac6a1
gh it cleanly applies to
net-next as well). Went for net tree instead of bpf tree here given
the main change is in net/core/sock_diag.c, but either way would be
fine with me.
Thanks a lot!
Daniel Borkmann (2):
sock: make cookie generation global instead of per netns
bpf: sync bpf.h to
On 8/8/19 12:45 PM, Eric Dumazet wrote:
On Thu, Aug 8, 2019 at 11:50 AM Daniel Borkmann wrote:
Socket cookie consumers must assume the value as opqaue in any case.
The cookie does not guarantee an always unique identifier since it
could wrap in fabricated corner cases where two sockets could
On 8/8/19 1:37 PM, Eric Dumazet wrote:
On Thu, Aug 8, 2019 at 1:09 PM Daniel Borkmann wrote:
On 8/8/19 12:45 PM, Eric Dumazet wrote:
On Thu, Aug 8, 2019 at 11:50 AM Daniel Borkmann wrote:
Socket cookie consumers must assume the value as opqaue in any case.
The cookie does not guarantee an
.
Socket cookie consumers must assume the value as opqaue in any case.
Not every socket must have a cookie generated and knowledge of the
counter value itself does not provide much value either way hence
conversion to global is fine.
Signed-off-by: Daniel Borkmann
Cc: Eric Dumazet
Cc: Alexei
gh it cleanly applies to
net-next as well). Went for net tree instead of bpf tree here given
the main change is in net/core/sock_diag.c, but either way would be
fine with me.
Thanks a lot!
v1 -> v2:
- Fix up commit description in patch #1, thanks Eric!
Daniel Borkmann (2):
sock: mak
Pull in updates in BPF helper function description.
Signed-off-by: Daniel Borkmann
---
tools/include/uapi/linux/bpf.h | 11 +++
1 file changed, 7 insertions(+), 4 deletions(-)
diff --git a/tools/include/uapi/linux/bpf.h b/tools/include/uapi/linux/bpf.h
index 4e455018da65..a5aa7d3ac6a1
On 8/7/19 2:19 AM, Jakub Kicinski wrote:
Hi!
First make sure we don't use "prog" in error messages because
the pinning operation could be performed on a map. Second add
back missing error message if pin syscall failed.
Jakub Kicinski (2):
tools: bpftool: fix error message (prog -> object)
On 8/8/19 6:17 PM, Jesper Dangaard Brouer wrote:
V3: Hopefully fixed all issues point out by Yonghong Song
V2: Addressed issues point out by Yonghong Song
- Please ACK patch 2/3 again
- Added ACKs and reviewed-by to other patches
This patchset is focused on improvements for XDP forwarding s
for jmp to 1st insn
selftests/bpf: tests for jmp to 1st insn
Andrii Nakryiko (2):
libbpf: fix erroneous multi-closing of BTF FD
libbpf: set BTF FD for prog only when there is supported .BTF.ext data
Daniel Borkmann (1):
Merge branch 'bpf-bpftool-pinning-error-msg'
Jakub Kici
On 8/9/19 2:39 AM, Peter Wu wrote:
/proc/config has never existed as far as I can see, but /proc/config.gz
is present on Arch Linux. Add support for decompressing config.gz using
zlib which is a mandatory dependency of libelf. Replace existing stdio
functions with gzFile operations since the latt
On 8/9/19 6:10 PM, Stanislav Fomichev wrote:
Add new helper bpf_sk_storage_clone which optionally clones sk storage
and call it from sk_clone_lock.
Cc: Martin KaFai Lau
Cc: Yonghong Song
Signed-off-by: Stanislav Fomichev
[...]
+int bpf_sk_storage_clone(const struct sock *sk, struct sock *ne
On 8/2/19 10:11 AM, Björn Töpel wrote:
From: Björn Töpel
When an AF_XDP socket is released/closed the XSKMAP still holds a
reference to the socket in a "released" state. The socket will still
use the netdev queue resource, and block newly created sockets from
attaching to that queue, but no use
On 8/12/19 5:03 PM, Ilya Leoshkevich wrote:
"masking, test in bounds 3" fails on s390, because
BPF_ALU64_IMM(BPF_NEG, BPF_REG_2, 0) ignores the top 32 bits of
BPF_REG_2. The reason is that JIT emits lcgfr instead of lcgr.
The associated comment indicates that the code was intended to emit lcgr
in
On 8/12/19 8:39 PM, Andrii Nakryiko wrote:
Make .BTF section allocated and expose its contents through sysfs.
/sys/kernel/btf directory is created to contain all the BTFs present
inside kernel. Currently there is only kernel's main BTF, represented as
/sys/kernel/btf/kernel file. Once kernel mod
On 8/13/19 2:38 AM, Peter Wu wrote:
bpftool requires libelf, and zlib for decompressing /proc/config.gz.
zlib is a transitive dependency via libelf, and became mandatory since
elfutils 0.165 (Jan 2016). The feature check of libelf is already done
in the elfdep target of tools/lib/bpf/Makefile, pu
On 8/13/19 1:30 AM, Petar Penkov wrote:
From: Petar Penkov
Since the "last_dissection" map holds only the flow keys for the most
recent packet, there is a small race in the skb-less flow dissector
tests if a new packet comes between transmitting the test packet, and
reading its keys from the ma
On 8/12/19 7:52 PM, Stanislav Fomichev wrote:
On 08/12, Daniel Borkmann wrote:
On 8/9/19 6:10 PM, Stanislav Fomichev wrote:
Add new helper bpf_sk_storage_clone which optionally clones sk storage
and call it from sk_clone_lock.
Cc: Martin KaFai Lau
Cc: Yonghong Song
Signed-off-by: Stanislav
On 8/13/19 8:54 PM, Andrii Nakryiko wrote:
Now that kernel's BTF is exposed through sysfs at well-known location, attempt
to load it first as a target BTF for the purpose of BPF CO-RE relocations.
Patch #1 is a follow-up patch to rename /sys/kernel/btf/kernel into
/sys/kernel/btf/vmlinux.
Patch
On 1/12/21 8:46 PM, Andrii Nakryiko wrote:
On Tue, Jan 12, 2021 at 1:14 AM Gilad Reti wrote:
Add support for pointer to mem register spilling, to allow the verifier
to track pointer to valid memory addresses. Such pointers are returned
for example by a successful call of the bpf_ringbuf_reserv
On 1/12/21 7:41 AM, Andrii Nakryiko wrote:
On Mon, Jan 11, 2021 at 5:16 PM Yonghong Song wrote:
On 1/11/21 12:51 PM, Andrii Nakryiko wrote:
On Mon, Jan 11, 2021 at 10:13 AM Yonghong Song wrote:
On 1/9/21 11:03 PM, Andrii Nakryiko wrote:
Empty BTFs do come up (e.g., simple kernel modules wit
On 1/13/21 12:18 AM, Alexei Starovoitov wrote:
On Tue, Jan 12, 2021 at 8:30 AM Daniel Borkmann wrote:
On 1/12/21 8:55 AM, Andrii Nakryiko wrote:
Add support for directly accessing kernel module variables from BPF programs
using special ldimm64 instructions. This functionality builds upon
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