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authorDave Airlie <airlied@redhat.com>2024-12-19 11:59:43 +1000
committerDave Airlie <airlied@redhat.com>2024-12-19 12:00:02 +1000
commit38e961097e04e7adfe1d3335e3371e97c1723064 (patch)
tree40ffe2d6d45d668ed42fa28c270760f8967fcfba /tools/testing/selftests/bpf/progs/changes_pkt_data.c
parent301e2772295e8de0cf8acdd9ddb1824b546375a5 (diff)
parent78d4f34e2115b517bcbfe7ec0d018bbbb6f9b0b8 (diff)
Merge tag 'v6.13-rc3' into drm-next
Backmerge linux 6.13-rc3 as amd next has some dependencies on fixes in it. Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'tools/testing/selftests/bpf/progs/changes_pkt_data.c')
-rw-r--r--tools/testing/selftests/bpf/progs/changes_pkt_data.c39
1 files changed, 39 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/progs/changes_pkt_data.c b/tools/testing/selftests/bpf/progs/changes_pkt_data.c
new file mode 100644
index 000000000000..43cada48b28a
--- /dev/null
+++ b/tools/testing/selftests/bpf/progs/changes_pkt_data.c
@@ -0,0 +1,39 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/bpf.h>
+#include <bpf/bpf_helpers.h>
+
+__noinline
+long changes_pkt_data(struct __sk_buff *sk)
+{
+ return bpf_skb_pull_data(sk, 0);
+}
+
+__noinline __weak
+long does_not_change_pkt_data(struct __sk_buff *sk)
+{
+ return 0;
+}
+
+SEC("?tc")
+int main_with_subprogs(struct __sk_buff *sk)
+{
+ changes_pkt_data(sk);
+ does_not_change_pkt_data(sk);
+ return 0;
+}
+
+SEC("?tc")
+int main_changes(struct __sk_buff *sk)
+{
+ bpf_skb_pull_data(sk, 0);
+ return 0;
+}
+
+SEC("?tc")
+int main_does_not_change(struct __sk_buff *sk)
+{
+ return 0;
+}
+
+char _license[] SEC("license") = "GPL";