linux-stable.git/tools/testing/selftests/bpf, branch linux-5.2.y

selftests/bpf: add config fragment BPF_JIT

2019-09-21T05:18:32+00:00

[ Upstream commit 0604409df9e04cdec7b08d471c8c1c0c10b5554d ]

When running test_kmod.sh the following shows up

 # sysctl cannot stat /proc/sys/net/core/bpf_jit_enable No such file or directory
 cannot: stat_/proc/sys/net/core/bpf_jit_enable #
 # sysctl cannot stat /proc/sys/net/core/bpf_jit_harden No such file or directory
 cannot: stat_/proc/sys/net/core/bpf_jit_harden #

Rework to enable CONFIG_BPF_JIT to solve "No such file or directory"

Signed-off-by: Anders Roxell 
Signed-off-by: Daniel Borkmann 
Signed-off-by: Sasha Levin

selftests/bpf: fix test_cgroup_storage on s390

2019-09-21T05:18:32+00:00

[ Upstream commit 806ce6e2117a42528e7bb979e04e28229b34a612 ]

test_cgroup_storage fails on s390 with an assertion failure: packets are
dropped when they shouldn't. The problem is that BPF_DW packet count is
accessed as BPF_W with an offset of 0, which is not correct on
big-endian machines.

Since the point of this test is not to verify narrow loads/stores,
simply use BPF_DW when working with packet counts.

Fixes: 68cfa3ac6b8d ("selftests/bpf: add a cgroup storage test")
Fixes: 919646d2a3a9 ("selftests/bpf: extend the storage test to test per-cpu cgroup storage")
Signed-off-by: Ilya Leoshkevich 
Signed-off-by: Daniel Borkmann 
Signed-off-by: Sasha Levin

selftests/bpf: fix "bind{4, 6} deny specific IP & port" on s390

2019-09-21T05:18:28+00:00

[ Upstream commit 27df5c7068bf23cab282dc64b1c9894429b3b8a0 ]

"bind4 allow specific IP & port" and "bind6 deny specific IP & port"
fail on s390 because of endianness issue: the 4 IP address bytes are
loaded as a word and compared with a constant, but the value of this
constant should be different on big- and little- endian machines, which
is not the case right now.

Use __bpf_constant_ntohl to generate proper value based on machine
endianness.

Fixes: 1d436885b23b ("selftests/bpf: Selftest for sys_bind post-hooks.")
Signed-off-by: Ilya Leoshkevich 
Signed-off-by: Daniel Borkmann 
Signed-off-by: Sasha Levin

selftests/bpf: install files test_xdp_vlan.sh

2019-09-06T08:23:29+00:00

[ Upstream commit 3035bb72ee47d494c041465b4add9c6407c832ed ]

When ./test_xdp_vlan_mode_generic.sh runs it complains that it can't
find file test_xdp_vlan.sh.

 # selftests: bpf: test_xdp_vlan_mode_generic.sh
 # ./test_xdp_vlan_mode_generic.sh: line 9: ./test_xdp_vlan.sh: No such
 file or directory

Rework so that test_xdp_vlan.sh gets installed, added to the variable
TEST_PROGS_EXTENDED.

Fixes: d35661fcf95d ("selftests/bpf: add wrapper scripts for test_xdp_vlan.sh")
Signed-off-by: Anders Roxell 
Acked-by: Jesper Dangaard Brouer 
Signed-off-by: Daniel Borkmann 
Signed-off-by: Sasha Levin

selftests/bpf: add another gso_segs access

2019-08-29T06:30:04+00:00

[ Upstream commit be69483bf4f3abaaca5d5ba460dbb50239463552 ]

Use BPF_REG_1 for source and destination of gso_segs read,
to exercise "bpf: fix access to skb_shared_info->gso_segs" fix.

Signed-off-by: Eric Dumazet 
Suggested-by: Stanislav Fomichev 
Signed-off-by: Alexei Starovoitov 
Signed-off-by: Sasha Levin

selftests/bpf: fix sendmsg6_prog on s390

2019-08-29T06:30:01+00:00

[ Upstream commit c8eee4135a456bc031d67cadc454e76880d1afd8 ]

"sendmsg6: rewrite IP & port (C)" fails on s390, because the code in
sendmsg_v6_prog() assumes that (ctx->user_ip6[0] & 0xFFFF) refers to
leading IPv6 address digits, which is not the case on big-endian
machines.

Since checking bitwise operations doesn't seem to be the point of the
test, replace two short comparisons with a single int comparison.

Signed-off-by: Ilya Leoshkevich 
Acked-by: Andrey Ignatov 
Signed-off-by: Daniel Borkmann 
Signed-off-by: Sasha Levin

selftests/bpf: reduce time to execute test_xdp_vlan.sh

2019-08-09T15:51:47+00:00

[ Upstream commit 13978d1e73d2fcfb6addcf3392707ad68fa88ccb ]

Given the increasing number of BPF selftests, it makes sense to
reduce the time to execute these tests.  The ping parameters are
adjusted to reduce the time from measures 9 sec to approx 2.8 sec.

Signed-off-by: Jesper Dangaard Brouer 
Signed-off-by: David S. Miller 
Signed-off-by: Greg Kroah-Hartman

selftests/bpf: add wrapper scripts for test_xdp_vlan.sh

2019-08-09T15:51:47+00:00

[ Upstream commit d35661fcf95d8818c1f9acc818a1bad23dda4e1c ]

In-order to test both native-XDP (xdpdrv) and generic-XDP (xdpgeneric)
create two wrapper test scripts, that start the test_xdp_vlan.sh script
with these modes.

Signed-off-by: Jesper Dangaard Brouer 
Signed-off-by: David S. Miller 
Signed-off-by: Greg Kroah-Hartman

bpf: fix XDP vlan selftests test_xdp_vlan.sh

2019-08-09T15:51:46+00:00

[ Upstream commit 4de9c89a4982431c4a02739743fd360dc5581f22 ]

Change BPF selftest test_xdp_vlan.sh to (default) use generic XDP.

This selftest was created together with a fix for generic XDP, in commit
297249569932 ("net: fix generic XDP to handle if eth header was
mangled"). And was suppose to catch if generic XDP was broken again.

The tests are using veth and assumed that veth driver didn't support
native driver XDP, thus it used the (ip link set) 'xdp' attach that fell
back to generic-XDP. But veth gained native-XDP support in 948d4f214fde
("veth: Add driver XDP"), which caused this test script to use
native-XDP.

Fixes: 948d4f214fde ("veth: Add driver XDP")
Fixes: 97396ff0bc2d ("selftests/bpf: add XDP selftests for modifying and popping VLAN headers")
Signed-off-by: Jesper Dangaard Brouer 
Signed-off-by: David S. Miller 
Signed-off-by: Greg Kroah-Hartman

selftests/bpf: do not ignore clang failures

2019-08-06T17:08:08+00:00

[ Upstream commit 9cae4ace80ef39005da106fbb89c952b27d7b89e ]

When compiling an eBPF prog fails, make still returns 0, because
failing clang command's output is piped to llc and therefore its
exit status is ignored.

When clang fails, pipe the string "clang failed" to llc. This will make
llc fail with an informative error message. This solution was chosen
over using pipefail, having separate targets or getting rid of llc
invocation due to its simplicity.

In addition, pull Kbuild.include in order to get .DELETE_ON_ERROR target,
which would cause partial .o files to be removed.

Signed-off-by: Ilya Leoshkevich 
Acked-by: Andrii Nakryiko 
Signed-off-by: Daniel Borkmann 
Signed-off-by: Sasha Levin