sts/flow_dissector.c:150:49: error: ‘IFF_NAPI_FRAGS’ undeclared
Adding include/uapi/linux/if_tun.h to tools/include/uapi/linux
resolves the problem and ensures the compilation of the file
does not depend on having up-to-date kernel headers locally.
Signed-off-by: Alan Maguire
---
tools/include
in
native mode for ixgbe as both client and server works fine.
Signed-off-by: Alan Maguire
---
tools/testing/selftests/bpf/.gitignore | 1 +
tools/testing/selftests/bpf/Makefile| 5 +-
tools/testing/selftests/bpf/progs/xdping_kern.c | 184 ++
too
to lack of shared code (Song Liu)
- added checks to ensure that SKB and native mode are not requested
together (Song Liu)
Signed-off-by: Alan Maguire
---
tools/testing/selftests/bpf/.gitignore | 1 +
tools/testing/selftests/bpf/Makefile| 5 +-
tools/testing/sel
and server programs due
to lack of shared code (Song Liu)
- added checks to ensure that SKB and native mode are not requested
together (Song Liu)
Signed-off-by: Alan Maguire
---
tools/testing/selftests/bpf/.gitignore | 1 +
tools/testing/selftests/bpf/Makefile| 5
hecks into icmp_check() function called by client
and server programs and reworked client and server programs due
to lack of shared code (Song Liu)
- added checks to ensure that SKB and native mode are not requested
together (Song Liu)
Signed-off-by: Alan Maguire
---
tools/testing/sel
I was wondering if there is a way to pop multiple MPLS labels at
once for local delivery using iproute2?
Adding multiple labels for encapsulation is supported via
label1/label2/... syntax, but I can't find a way to do the same
for popping multiple labels for local delivery.
For example if I run
Signed-off-by: Alan Maguire
---
tools/testing/selftests/bpf/.gitignore | 1 +
tools/testing/selftests/bpf/Makefile| 5 +-
tools/testing/selftests/bpf/progs/xdping_kern.c | 184 +
tools/testing/selftests/bpf/test_xdping.sh | 99 +
tools/testing
On Fri, 31 May 2019, David Ahern wrote:
> On 5/31/19 6:24 AM, Alan Maguire wrote:
> > I was wondering if there is a way to pop multiple MPLS labels at
> > once for local delivery using iproute2?
> >
> > Adding multiple labels for encapsulation is supported via
> >
On Mon, 11 Jan 2021, Andrii Nakryiko wrote:
> On Mon, Jan 11, 2021 at 9:34 AM Alan Maguire wrote:
> > Currently the only "show" function for userspace is to write the
> > representation of the typed data to a string via
> >
> > LIBBPF_API int
> > btf__s
ound in it should be fixed there or vice versa;
mirroring the tests should help with this also
(Andrii)
[1]
https://lore.kernel.org/bpf/1610386373-24162-1-git-send-email-alan.magu...@oracle.com/T/#t
Alan Maguire (4):
libbpf: add btf_has_size() and btf_int() inlines
libbpf: make skip_mods_an
btf_dump.c will need it for type-based data display.
Signed-off-by: Alan Maguire
---
tools/lib/bpf/libbpf.c | 4 +---
tools/lib/bpf/libbpf_internal.h | 2 ++
2 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c
index 2abbc38
Test various type data dumping operations by comparing expected
format with the dumped string; an snprintf-style printf function
is used to record the string dumped.
Signed-off-by: Alan Maguire
---
tools/testing/selftests/bpf/prog_tests/btf_dump.c | 233 ++
1 file changed
6744073709551615,
},
},
...
Signed-off-by: Alan Maguire
---
tools/lib/bpf/btf.h | 17 +
tools/lib/bpf/btf_dump.c | 974 +++
tools/lib/bpf/libbpf.map | 5 +
3 files changed, 996 insertions(+)
diff --git a/tools/lib/bpf/btf.h b/tools/lib/bpf/b
BTF type data dumping will use them in later patches, and they
are useful generally when handling BTF data.
Signed-off-by: Alan Maguire
---
tools/lib/bpf/btf.h | 19 +++
1 file changed, 19 insertions(+)
diff --git a/tools/lib/bpf/btf.h b/tools/lib/bpf/btf.h
index 1237bcd
On Thu, 21 Jan 2021, Andrii Nakryiko wrote:
> On Wed, Jan 20, 2021 at 10:56 PM Andrii Nakryiko
> wrote:
> >
> > On Sun, Jan 17, 2021 at 2:22 PM Alan Maguire
> > wrote:
> > >
> > > Add a BTF dumper for typed data, so that the user can dump
On Tue, 15 Dec 2020, Alexei Starovoitov wrote:
> On Wed, Dec 09, 2020 at 11:21:43PM +0000, Alan Maguire wrote:
> > Right, that's exactly it. A pair of generic tracing BPF programs are
> > used, and they attach to kprobe/kretprobes, and when they run they
> > use
On Wed, 16 Dec 2020, Alexei Starovoitov wrote:
> > > $ ksnoop "ip_send_skb(skb->sk)"
> > >
> > > ...will trace the skb->sk value. The user-space side of the program
> > > matches the function/arg name and looks up the referenced type, setting it
> > > in the function's map. For field referenc
likely be supported
directly in the BPF program via __builtin_btf_type_id(); but
I need to determine a good test to determine if that builtin
supports object ids.
Changes since RFC
- add patch to remove module mutex
- modify to use obj_id instead of module name as identifier
in "struct btf_ptr&
the object id
specifies the module the type is in, or if no such id is
found in the module list, we fall back to vmlinux.
Signed-off-by: Alan Maguire
---
include/linux/btf.h| 12
include/uapi/linux/bpf.h | 13 +++--
kernel/bpf/btf.c
t net_device".
Currently the tests take the messy approach of determining object
and type ids for the relevant module/function; __builtin_btf_type_id()
supports object ids by returning a 64-bit value, but need to find a good
way to determine if that support is present.
Signed-off-by: Alan M
auditing example in
Documentation/RCU/listRCU.rst ; and as such we can eliminate
the lock and use list_del_rcu()/call_rcu() on module removal,
and list_add_rcu() for module addition.
Signed-off-by: Alan Maguire
---
kernel/bpf/btf.c | 31 +--
1 file changed, 17 insertions
t; selftests. Manual testing was performed with debug log messages sprinkled
> across selftests and libbpf, confirming expected values are substituted.
> Better testing will be performed as part of the work adding module BTF types
> support to bpf_snprintf_btf() helpers.
>
> Cc: Al
On Sat, 5 Dec 2020, Yonghong Song wrote:
>
>
> __builtin_btf_type_id() is really only supported in llvm12
> and 64bit return value support is pushed to llvm12 trunk
> a while back. The builtin is introduced in llvm11 but has a
> corner bug, so llvm12 is recommended. So if people use the builti
t; selftests. Manual testing was performed with debug log messages sprinkled
> across selftests and libbpf, confirming expected values are substituted.
> Better testing will be performed as part of the work adding module BTF types
> support to bpf_snprintf_btf() helpers.
>
> Cc: Al
On Mon, 7 Dec 2020, Andrii Nakryiko wrote:
> On Sat, Dec 5, 2020 at 4:38 PM Alan Maguire wrote:
> > Thanks so much for doing this Andrii! When I tested, I ran into a problem;
> > it turns out when a module struct such as "veth_stats" is used, it's
> > classif
On Mon, 7 Dec 2020, Andrii Nakryiko wrote:
> On Mon, Dec 7, 2020 at 7:12 PM Alexei Starovoitov
> wrote:
> >
> > On Mon, Dec 07, 2020 at 04:38:16PM +, Alan Maguire wrote:
> > > Sorry about this Andrii, but I'm a bit stuck here.
> > >
> > > I&
->v2:
> - fix crash on failing to resolve target spec (Alan).
>
> Cc: Alan Maguire
> Signed-off-by: Andrii Nakryiko
Thanks for this!
Can confirm the segmentation fault has gone away. I tested with the
veth_stats_rx program (though will switch to btf_test module later),
and
On Tue, 8 Dec 2020, Alexei Starovoitov wrote:
> On Tue, Dec 08, 2020 at 10:13:35PM +0000, Alan Maguire wrote:
> >
> > Does this approach prevent more complex run-time specification of BTF
> > object fd though? For example, I've been working on a simple tracer
>
to the latest changes etc and BTF generation seemed to work
fine for modules during kernel build).
For the "bpftool btf show" functionality, feel free to add
Tested-by: Alan Maguire
Thanks!
Alan
lly
for vmlinux + module BTF, where the latter is much smaller.
Use btf__get_nr_types() instead.
Signed-off-by: Alan Maguire
---
tools/lib/bpf/btf.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/tools/lib/bpf/btf.c b/tools/lib/bpf/btf.c
index 2d0d064..0fccf4b 100644
--
t_device".
Signed-off-by: Alan Maguire
---
.../selftests/bpf/prog_tests/snprintf_btf_mod.c| 96 ++
tools/testing/selftests/bpf/progs/btf_ptr.h| 1 +
tools/testing/selftests/bpf/progs/veth_stats_rx.c | 73
3 files changed, 170 insertions(+)
cr
of a module-specific type id will fail
in patch 3.
Patch 3 is a selftest that uses veth (when built as a
module) and a kprobe to display both a module-specific
and kernel-specific type; both are arguments to veth_stats_rx().
Alan Maguire (3):
bpf: add module support to btf disp
bpf_snprintf_btf and bpf_seq_printf_btf use a "struct btf_ptr *"
argument that specifies type information about the type to
be displayed. Augment this information to include a module
name, allowing such display to support module types.
Signed-off-by: Alan Maguire
---
include/l
lly
for vmlinux + module BTF, where the latter is much smaller.
Use btf__get_nr_types() instead.
Fixes: ba451366bf44 ("libbpf: Implement basic split BTF support")
Signed-off-by: Alan Maguire
---
tools/lib/bpf/btf.c | 8
1 file changed, 4 insertions(+), 4 deletions(-)
diff --gi
On Sat, 14 Nov 2020, Yonghong Song wrote:
>
>
> On 11/14/20 8:04 AM, Alexei Starovoitov wrote:
> > On Fri, Nov 13, 2020 at 10:59 PM Andrii Nakryiko
> > wrote:
> >>
> >> On Fri, Nov 13, 2020 at 10:11 AM Alan Maguire
> >> wrote:
> >>>
edicate, e.g.
ksnoop "ip_send_skb(skb->dev == 0, skb)"
...as this will be evaluated before the skb is stringified,
and we potentially avoid that operation if the predicate fails.
The same is _not_ true however in the stash case; for
ksnoop "ip_send_skb(skb, return!=0)"
On Tue, 5 Jan 2021, Cong Wang wrote:
> On Mon, Jan 4, 2021 at 7:29 AM Alan Maguire wrote:
> >
> > BPF Type Format (BTF) provides a description of kernel data structures
> > and of the types kernel functions utilize as arguments and return values.
> >
>
needed for compilation anyhow.
[1]
https://lore.kernel.org/netdev/1461512707-23058-1-git-send-email-mikko.rapeli__34748.27880641$1462831734$gmane$o...@iki.fi/
Fixes: f6f3bac08ff9 ("tools/bpf: bpftool: add net support")
Signed-off-by: Alan Maguire
---
tools/bpf/bpftool/net.c | 1
format. The test closely mirrors
the BPF program associated with the snprintf_btf.c; in this case
however the string representations are verified in userspace rather
than in BPF program context.
Alan Maguire (2):
bpf: share BTF "show" implementation between kernel and libbpf
selftests
Test btf__snprintf with various base/kernel types and ensure
display is as expected; tests are identical to those in snprintf_btf
test save for the fact these run in userspace rather than BPF program
context.
Signed-off-by: Alan Maguire
---
.../selftests/bpf/prog_tests/snprintf_btf_user.c
d\n", skb_id);
else
btf__snprintf(btf, buf, sizeof(buf), skb_id, skb, 0);
Suggested-by: Alexei Starovoitov
Signed-off-by: Alan Maguire
---
include/linux/btf.h | 121 +---
include/linux/btf_common.h | 286 +
kernel/bpf/Makefile |2 +
On Thu, 29 Oct 2020, Andrii Nakryiko wrote:
> On Thu, Oct 29, 2020 at 5:33 PM Song Liu wrote:
> >
> >
> >
> > > On Oct 28, 2020, at 5:58 PM, Andrii Nakryiko wrote:
> > >
> > > This patch set adds support for generating and deduplicating split BTF.
> > > This
> > > is an enhancement to the BTF,
On Wed, 12 Aug 2020, Alexei Starovoitov wrote:
> On Thu, Aug 06, 2020 at 03:42:23PM +0100, Alan Maguire wrote:
> >
> > The bpf_trace_printk tracepoint is augmented with a "trace_id"
> > field; it is used to allow tracepoint filtering as typed display
> > i
On Fri, 14 Aug 2020, Alexei Starovoitov wrote:
> On Fri, Aug 14, 2020 at 02:06:37PM +0100, Alan Maguire wrote:
> > On Wed, 12 Aug 2020, Alexei Starovoitov wrote:
> >
> > > On Thu, Aug 06, 2020 at 03:42:23PM +0100, Alan Maguire wrote:
> > > >
> &
am I missing something?
> Also exercise and check new APIs in perf_buffer selftest.
>
> Signed-off-by: Andrii Nakryiko
A few question around the test below, but
Reviewed-by: Alan Maguire
> ---
> tools/lib/bpf/libbpf.c| 51 ++-
>
Fixes: c8b34e680a09 ("ip_tunnel: Add tnl_update_pmtu in ip_md_tunnel_xmit")
Reported-by: Naresh Kamboju
Signed-off-by: Alan Maguire
Acked-by: Alexei Starovoitov
Tested-by: Anders Roxell
---
net/ipv4/ip_tunnel.c | 9 ++---
1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/net/ip
d
fail becuase GRO reassembly set the transport header, and as
shrinkage was limited to ensure we still had an IPv4/IPv6 header's
worth of space between the network and transport headers, the operation
would fail. I think that problem is fixed here, is that right?
Reviewed-by: Alan Maguire
Thank
0)
minor nit - could we add this flag to the documentation for
bpf_skb_adjust_room? Same suggestion for the encap flags in
patch 8 too. Thanks!
Reviewed-by: Alan Maguire
> +#define BPF_F_ADJ_ROOM_MASK (BPF_F_ADJ_ROOM_FIXED_GSO)
> +
> /* Mode for BPF_FUNC_skb_adjust_room helper. *
("selftests/bpf: bpf tunnel encap test")
Signed-off-by: Alan Maguire
---
tools/testing/selftests/bpf/test_tc_tunnel.sh | 8
1 file changed, 8 insertions(+)
diff --git a/tools/testing/selftests/bpf/test_tc_tunnel.sh
b/tools/testing/selftests/bpf/test_tc_tunnel.sh
index dcf3206..c805
I'm seeing the following repeated error
[ 130.821362] neighbour: arp_cache: neighbor table overflow!
when using MPLSoverGRE or MPLSoverUDP tunnels on bits synced
with bpf-next as of this morning. The test script below reliably
reproduces the problem, while working fine on a 4.14 (I haven't
bisec
> this case the cleanup path needs to drop the gc_entries counter. There
> is no memory leak, only a counter leak.
>
> Fixes: 58956317c8d ("neighbor: Improve garbage collection")
> Reported-by: Ian Kumlien
> Reported-by: Alan Maguire
> Signed-off-by: David Ahern
ntable show | head -10 | grep alloc
>
> which increase for each packet showing the unnecessary overhread.
>
> Fix by having neigh_xmit use __ipv4_neigh_lookup_noref for NEIGH_ARP_TABLE.
>
> Fixes: cd9ff4de0107 ("ipv4: Make neigh lookup keys for
> loopback/point-to-p
On Wed, 1 May 2019, David Ahern wrote:
> On 5/1/19 10:03 AM, Alan Maguire wrote:
> > I'm seeing the following repeated error
> >
> > [ 130.821362] neighbour: arp_cache: neighbor table overflow!
> >
> > when using MPLSoverGRE or MPLSoverUDP tunnels on bi
On Fri, 4 Oct 2019, Alexei Starovoitov wrote:
> libbpf analyzes bpf C program, searches in-kernel BTF for given type name
> and stores it into expected_attach_type.
> The kernel verifier expects this btf_id to point to something like:
> typedef void (*btf_trace_kfree_skb)(void *, struct sk_buff *s
}() APIs")
> Signed-off-by: Andrii Nakryiko
Reviewed-by: Alan Maguire
> ---
> tools/testing/selftests/bpf/Makefile | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/tools/testing/selftests/bpf/Makefile
> b/tools/testing/selftests/bpf/Makefile
> ind
Patch #4 extends the tests again to support MPLSoverGRE and
MPLSoverUDP encap, along with existing test coverage.
Alan Maguire (4):
selftests_bpf: extend test_tc_tunnel for UDP encap
bpf: add layer 2 encap support to bpf_skb_adjust_room
bpf: sync bpf.h to tools/ for BPF_F_ADJ_ROOM_ENCAP_L2
sel
ned-off-by: Alan Maguire
---
tools/testing/selftests/bpf/progs/test_tc_tunnel.c | 149 ++---
tools/testing/selftests/bpf/test_tc_tunnel.sh | 72 +++---
2 files changed, 157 insertions(+), 64 deletions(-)
diff --git a/tools/testing/selftests/bpf/progs/test_tc_tunnel.
Sync include/uapi/linux/bpf.h with tools/ equivalent to add
BPF_F_ADJ_ROOM_ENCAP_L2(len) macro.
Signed-off-by: Alan Maguire
---
tools/include/uapi/linux/bpf.h | 5 +
1 file changed, 5 insertions(+)
diff --git a/tools/include/uapi/linux/bpf.h b/tools/include/uapi/linux/bpf.h
index 8370245
CAP_L4_UDP |
BPF_F_ADJ_ROOM_ENCAP_L3_IPV4 |
BPF_F_ADJ_ROOM_ENCAP_L2(inner_maclen));
Signed-off-by: Alan Maguire
---
include/uapi/linux/bpf.h | 5 +
net/core/filter.c| 19 ++-
2 files changed, 19 insertions(+), 5 deletions(-)
di
Update test_tc_tunnel to verify adding inner L2 header
encapsulation (an MPLS label) works.
Signed-off-by: Alan Maguire
---
tools/testing/selftests/bpf/progs/test_tc_tunnel.c | 172 +
tools/testing/selftests/bpf/test_tc_tunnel.sh | 59 +++
2 files changed, 170
added support for ethernet L2 encap to tests; testing against
gre[6]tap tunnels (patch 4).
Alan Maguire (4):
selftests_bpf: add UDP encap to test_tc_tunnel
bpf: add layer 2 encap support to bpf_skb_adjust_room
bpf: sync bpf.h to tools/ for BPF_F_ADJ_ROOM_ENCAP_L2
selftests_bpf: add L2 enc
commit 868d523535c2 ("bpf: add bpf_skb_adjust_room encap flags")
introduced support to bpf_skb_adjust_room for GSO-friendly GRE
and UDP encapsulation and later introduced associated test_tc_tunnel
tests. Here those tests are extended to cover UDP encapsulation also.
Signed-off-by: Al
CAP_L4_UDP |
BPF_F_ADJ_ROOM_ENCAP_L3_IPV4 |
BPF_F_ADJ_ROOM_ENCAP_L2(inner_maclen));
Signed-off-by: Alan Maguire
---
include/uapi/linux/bpf.h | 10 ++
net/core/filter.c| 15 ++-
2 files changed, 20 insertions(+), 5 deletions(-)
diff --git a/include/
Update test_tc_tunnel to verify adding inner L2 header
encapsulation (an MPLS label or ethernet header) works.
Signed-off-by: Alan Maguire
---
tools/testing/selftests/bpf/progs/test_tc_tunnel.c | 232 ++---
tools/testing/selftests/bpf/test_tc_tunnel.sh | 121 +++
2
Sync include/uapi/linux/bpf.h with tools/ equivalent to add
BPF_F_ADJ_ROOM_ENCAP_L2(len) macro.
Signed-off-by: Alan Maguire
---
tools/include/uapi/linux/bpf.h | 10 ++
1 file changed, 10 insertions(+)
diff --git a/tools/include/uapi/linux/bpf.h b/tools/include/uapi/linux/bpf.h
index
Update test_tc_tunnel to verify adding inner L2 header
encapsulation (an MPLS label or ethernet header) works.
Signed-off-by: Alan Maguire
---
tools/testing/selftests/bpf/config | 4 +
tools/testing/selftests/bpf/progs/test_tc_tunnel.c | 219 ++---
tools
CAP_L4_UDP |
BPF_F_ADJ_ROOM_ENCAP_L3_IPV4 |
BPF_F_ADJ_ROOM_ENCAP_L2(inner_maclen));
Signed-off-by: Alan Maguire
---
include/uapi/linux/bpf.h | 10 ++
net/core/filter.c| 12
2 files changed, 18 insertions(+), 4 deletions(-)
diff --git a/include/
commit 868d523535c2 ("bpf: add bpf_skb_adjust_room encap flags")
introduced support to bpf_skb_adjust_room for GSO-friendly GRE
and UDP encapsulation and later introduced associated test_tc_tunnel
tests. Here those tests are extended to cover UDP encapsulation also.
Signed-off-by: Al
41 -6). 0 checksums work fine (patch 1)
- added definitions for mask and shift used in setting L2 length
(patch 2)
- allow udp encap with fixed GSO (patch 2)
- changed "elen" to "l2_len" to be more descriptive (patch 4)
Alan Maguire (4):
selftests_bpf: extend test_tc_t
Sync include/uapi/linux/bpf.h with tools/ equivalent to add
BPF_F_ADJ_ROOM_ENCAP_L2(len) macro.
Signed-off-by: Alan Maguire
---
tools/include/uapi/linux/bpf.h | 10 ++
1 file changed, 10 insertions(+)
diff --git a/tools/include/uapi/linux/bpf.h b/tools/include/uapi/linux/bpf.h
index
> > progs/test_tc_tunnel.c:160:17: warning: taking address of packed member
> > 'ip' of class or structure
> > 'v4hdr' may result in an unaligned pointer value
> > [-Waddress-of-packed-member]
> > set_ipv4_csum(&h_outer.ip);
> &
replace tab after #define with space in line with rest of definitions
Signed-off-by: Alan Maguire
---
include/uapi/linux/bpf.h | 6 +++---
tools/include/uapi/linux/bpf.h | 6 +++---
2 files changed, 6 insertions(+), 6 deletions(-)
diff --git a/include/uapi/linux/bpf.h b/include/uapi
)
> Signed-off-by: Willem de Bruijn
Reviewed-by: Alan Maguire
One thought; should we add a line to the growth-only flags in
the description of bpf_skb_adjust_room (ENCAP_L[234]) in bpf.h;
something like:
"This flag is valid for use with positive len_diff values only."
? Don't
straightforward logic
> Patch 2 tests it with a 6in4 tunnel
>
> Willem de Bruijn (2):
> bpf: update skb->protocol in bpf_skb_net_grow
> selftests/bpf: expand test_tc_tunnel with SIT encap
>
For the series
Reviewed-by: Alan Maguire
Tested-by: Alan Maguire
> net/c
It will be used later for BPF structure display support
Signed-off-by: Alan Maguire
---
include/linux/bpf.h | 2 ++
kernel/bpf/verifier.c | 18 --
2 files changed, 14 insertions(+), 6 deletions(-)
diff --git a/include/linux/bpf.h b/include/linux/bpf.h
index cef4ef0..55eb67d
t;
field; it is used to allow tracepoint filtering as typed display
information can easily be interspersed with other tracing data,
making it hard to read. Specifying a trace_id will allow users
to selectively trace data, eliminating noise.
Signed-off-by: Alan Maguire
---
include/linux/bpf.h
on of the target dummy
value which is either all zeros or all 0xff values; the idea is this
exercises the "skip if zero" and "print everything" cases.
- added support in BPF for using the %pT format specifier in
bpf_trace_printk()
- added BPF tests which ensure %pT format spe
/union members;
they are not displayed by default
Signed-off-by: Alan Maguire
---
include/linux/bpf.h| 1 +
include/linux/btf.h| 9 ++--
include/uapi/linux/bpf.h | 63 +
kernel/bpf/core.c | 5 ++
kernel
Basic tests verifying various flag combinations for bpf_trace_btf()
using a tp_btf program to trace skb data.
Signed-off-by: Alan Maguire
---
tools/testing/selftests/bpf/prog_tests/trace_btf.c | 45 ++
.../selftests/bpf/progs/netif_receive_skb.c| 43
ad of
trace_printk()")
Signed-off-by: Alan Maguire
---
Documentation/bpf/bpf_design_QA.rst | 11 ---
1 file changed, 11 deletions(-)
diff --git a/Documentation/bpf/bpf_design_QA.rst
b/Documentation/bpf/bpf_design_QA.rst
index 12a246f..2df7b06 100644
--- a/Documentation/bpf/bpf_design_QA
, patch 1)
- use "tp/raw_syscalls/sys_enter" and a usleep(1) to trigger events
in the selftest ensuring test runs faster (Andrii, patch 2)
[1] https://lore.kernel.org/r/20200628194334.6238b...@oasis.local.home
Alan Maguire (2):
bpf: use dedicated bpf_trace_printk event instead of tr
Simple selftests that verifies bpf_trace_printk() returns a sensible
value and tracing messages appear.
Signed-off-by: Alan Maguire
---
.../selftests/bpf/prog_tests/trace_printk.c| 74 ++
tools/testing/selftests/bpf/progs/trace_printk.c | 21 ++
2 files changed
https://lore.kernel.org/r/20200628194334.6238b...@oasis.local.home
Signed-off-by: Steven Rostedt (VMware)
Signed-off-by: Alan Maguire
---
kernel/trace/Makefile| 2 ++
kernel/trace/bpf_trace.c | 41 -
kernel/trace/bpf_trace.h
Simple selftests that verifies bpf_trace_printk() returns a sensible
value and tracing messages appear.
Signed-off-by: Alan Maguire
Acked-by: Andrii Nakryiko
---
.../selftests/bpf/prog_tests/trace_printk.c| 75 ++
tools/testing/selftests/bpf/progs/trace_printk.c
l not prevent tracing output from being logged
(Steven, patch 1)
- use "tp/raw_syscalls/sys_enter" and a usleep(1) to trigger events
in the selftest ensuring test runs faster (Andrii, patch 2)
[1] https://lore.kernel.org/r/20200628194334.6238b...@oasis.local.home
Alan Maguire (2):
bpf
https://lore.kernel.org/r/20200628194334.6238b...@oasis.local.home
Signed-off-by: Steven Rostedt (VMware)
Signed-off-by: Alan Maguire
Acked-by: Andrii Nakryiko
---
kernel/trace/Makefile| 2 ++
kernel/trace/bpf_trace.c | 42 +-
kernel/trace/bpf_trace.h
It will be used later for BPF structure display support
Signed-off-by: Alan Maguire
---
include/linux/bpf.h | 2 ++
kernel/bpf/verifier.c | 18 --
2 files changed, 14 insertions(+), 6 deletions(-)
diff --git a/include/linux/bpf.h b/include/linux/bpf.h
index c6d9f2c..c0ad5d8
/union members;
they are not displayed by default
Signed-off-by: Alan Maguire
---
include/linux/bpf.h| 1 +
include/linux/btf.h| 9 +++--
include/uapi/linux/bpf.h | 68
kernel/bpf/helpers.c | 4 ++
kernel/tra
- added support in BPF for using the %pT format specifier in
bpf_trace_printk()
- added BPF tests which ensure %pT format specifier use works (Alexei).
Alan Maguire (6):
bpf: provide function to get vmlinux BTF information
bpf: move to generic BTF show support, apply it to seq files/string
bpf_btf_snprintf helper, and the helper returns 0 on success
or a negative error value.
Suggested-by: Alexei Starovoitov
Signed-off-by: Alan Maguire
---
include/linux/btf.h| 3 ++
include/uapi/linux/bpf.h | 10 ++
kernel/bpf/btf.c | 17 +++---
kernel/trace
off-by: Alan Maguire
---
tools/testing/selftests/bpf/prog_tests/bpf_iter.c | 66 ++
.../selftests/bpf/progs/bpf_iter_task_btf.c| 49
2 files changed, 115 insertions(+)
create mode 100644 tools/testing/selftests/bpf/progs/bpf_iter_task_btf.c
diff --gi
Tests verifying snprintf()ing of various data structures,
flags combinations using a tp_btf program.
Signed-off-by: Alan Maguire
---
.../selftests/bpf/prog_tests/btf_snprintf.c| 55 +
.../selftests/bpf/progs/netif_receive_skb.c| 260 +
2 files changed
te pointer values.
BTF_SHOW_UNSAFE - do not copy data to safe buffer before display.
BTF_SHOW_ZERO - show zeroed values (by default they are not shown).
Signed-off-by: Alan Maguire
---
include/linux/btf.h | 36 ++
kernel/bpf/btf.c| 971 ++-
/union members;
they are not displayed by default
Signed-off-by: Alan Maguire
---
include/linux/bpf.h| 1 +
include/linux/btf.h| 9 ++--
include/uapi/linux/bpf.h | 68 +++
kernel/bpf/core.c | 1 +
kernel/bpf/helpers.c
Tests verifying snprintf()ing of various data structures,
flags combinations using a tp_btf program.
Signed-off-by: Alan Maguire
---
.../selftests/bpf/prog_tests/snprintf_btf.c| 54 +
.../selftests/bpf/progs/netif_receive_skb.c| 260 +
2 files changed
sing the %pT format specifier in
bpf_trace_printk()
- added BPF tests which ensure %pT format specifier use works (Alexei).
Alan Maguire (6):
bpf: provide function to get vmlinux BTF information
bpf: move to generic BTF show support, apply it to seq files/strings
bpf: add bpf_snprintf_btf h
te pointer values.
BTF_SHOW_UNSAFE - do not copy data to safe buffer before display.
BTF_SHOW_ZERO - show zeroed values (by default they are not shown).
Signed-off-by: Alan Maguire
---
include/linux/btf.h | 36 ++
kernel/bpf/btf.c| 980 ++-
It will be used later for BPF structure display support
Signed-off-by: Alan Maguire
---
include/linux/bpf.h | 2 ++
kernel/bpf/verifier.c | 18 --
2 files changed, 14 insertions(+), 6 deletions(-)
diff --git a/include/linux/bpf.h b/include/linux/bpf.h
index fc5c901..049e50f
bpf_snprintf_btf helper, and the helper returns 0 on success
or a negative error value.
Suggested-by: Alexei Starovoitov
Signed-off-by: Alan Maguire
---
include/linux/btf.h| 2 ++
include/uapi/linux/bpf.h | 10 ++
kernel/bpf/btf.c | 4 ++--
kernel/bpf/core.c
off-by: Alan Maguire
---
tools/testing/selftests/bpf/prog_tests/bpf_iter.c | 66 ++
.../selftests/bpf/progs/bpf_iter_task_btf.c| 49
2 files changed, 115 insertions(+)
create mode 100644 tools/testing/selftests/bpf/progs/bpf_iter_task_btf.c
diff --gi
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