On 12/20/22 2:20 PM, Stanislav Fomichev wrote:
To be used for verification of driver implementations. Note that
the skb path is gone from the series, but I'm still keeping the
implementation for any possible future work.
$ xdp_hw_metadata <ifname>
On the other machine:
$ echo -n xdp | nc -u -q1 <target> 9091 # for AF_XDP
$ echo -n skb | nc -u -q1 <target> 9092 # for skb
Sample output:
# xdp
xsk_ring_cons__peek: 1
0x19f9090: rx_desc[0]->addr=100000000008000 addr=8100 comp_addr=8000
rx_timestamp_supported: 1
rx_timestamp: 1667850075063948829
0x19f9090: complete idx=8 addr=8000
# skb
found skb hwtstamp = 1668314052.854274681
Decoding:
# xdp
rx_timestamp=1667850075.063948829
$ date -d @1667850075
Mon Nov 7 11:41:15 AM PST 2022
$ date
Mon Nov 7 11:42:05 AM PST 2022
# skb
$ date -d @1668314052
Sat Nov 12 08:34:12 PM PST 2022
$ date
Sat Nov 12 08:37:06 PM PST 2022
Cc: John Fastabend <john.fastabend@xxxxxxxxx>
Cc: David Ahern <dsahern@xxxxxxxxx>
Cc: Martin KaFai Lau <martin.lau@xxxxxxxxx>
Cc: Jakub Kicinski <kuba@xxxxxxxxxx>
Cc: Willem de Bruijn <willemb@xxxxxxxxxx>
Cc: Jesper Dangaard Brouer <brouer@xxxxxxxxxx>
Cc: Anatoly Burakov <anatoly.burakov@xxxxxxxxx>
Cc: Alexander Lobakin <alexandr.lobakin@xxxxxxxxx>
Cc: Magnus Karlsson <magnus.karlsson@xxxxxxxxx>
Cc: Maryam Tahhan <mtahhan@xxxxxxxxxx>
Cc: xdp-hints@xxxxxxxxxxxxxxx
Cc: netdev@xxxxxxxxxxxxxxx
Signed-off-by: Stanislav Fomichev <sdf@xxxxxxxxxx>
---
tools/testing/selftests/bpf/.gitignore | 1 +
tools/testing/selftests/bpf/Makefile | 6 +-
.../selftests/bpf/progs/xdp_hw_metadata.c | 81 ++++
tools/testing/selftests/bpf/xdp_hw_metadata.c | 405 ++++++++++++++++++
4 files changed, 492 insertions(+), 1 deletion(-)
create mode 100644 tools/testing/selftests/bpf/progs/xdp_hw_metadata.c
create mode 100644 tools/testing/selftests/bpf/xdp_hw_metadata.c
diff --git a/tools/testing/selftests/bpf/.gitignore b/tools/testing/selftests/bpf/.gitignore
index 07d2d0a8c5cb..01e3baeefd4f 100644
--- a/tools/testing/selftests/bpf/.gitignore
+++ b/tools/testing/selftests/bpf/.gitignore
@@ -46,3 +46,4 @@ test_cpp
xskxceiver
xdp_redirect_multi
xdp_synproxy
+xdp_hw_metadata
diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile
index e6cbc04a7920..b7d5d3aa554e 100644
--- a/tools/testing/selftests/bpf/Makefile
+++ b/tools/testing/selftests/bpf/Makefile
@@ -83,7 +83,7 @@ TEST_PROGS_EXTENDED := with_addr.sh \
TEST_GEN_PROGS_EXTENDED = test_sock_addr test_skb_cgroup_id_user \
flow_dissector_load test_flow_dissector test_tcp_check_syncookie_user \
test_lirc_mode2_user xdping test_cpp runqslower bench bpf_testmod.ko \
- xskxceiver xdp_redirect_multi xdp_synproxy veristat
+ xskxceiver xdp_redirect_multi xdp_synproxy veristat xdp_hw_metadata
TEST_CUSTOM_PROGS = $(OUTPUT)/urandom_read $(OUTPUT)/sign-file
TEST_GEN_FILES += liburandom_read.so
@@ -241,6 +241,9 @@ $(OUTPUT)/test_maps: $(TESTING_HELPERS)
$(OUTPUT)/test_verifier: $(TESTING_HELPERS) $(CAP_HELPERS)
$(OUTPUT)/xsk.o: $(BPFOBJ)
$(OUTPUT)/xskxceiver: $(OUTPUT)/xsk.o
+$(OUTPUT)/xdp_hw_metadata: $(OUTPUT)/xsk.o $(OUTPUT)/xdp_hw_metadata.skel.h
+$(OUTPUT)/xdp_hw_metadata: $(OUTPUT)/network_helpers.o
+$(OUTPUT)/xdp_hw_metadata: LDFLAGS += -static
This test binary fails to build for llvm. gcc looks fine though. The CI tests
cannot be run on this set because of this. Please take a look:
https://github.com/kernel-patches/bpf/actions/runs/3745257032/jobs/6359527599#step:11:2202
I only have minor comments on the set. Looking forward to v6.
