From 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sat, 27 Apr 2024 12:05:51 +0200 Subject: Adding upstream version 5.10.209. Signed-off-by: Daniel Baumann --- .../bpf/progs/test_xdp_adjust_tail_grow.c | 33 ++++++++++++++++++++++ 1 file changed, 33 insertions(+) create mode 100644 tools/testing/selftests/bpf/progs/test_xdp_adjust_tail_grow.c (limited to 'tools/testing/selftests/bpf/progs/test_xdp_adjust_tail_grow.c') diff --git a/tools/testing/selftests/bpf/progs/test_xdp_adjust_tail_grow.c b/tools/testing/selftests/bpf/progs/test_xdp_adjust_tail_grow.c new file mode 100644 index 000000000..3d66599ee --- /dev/null +++ b/tools/testing/selftests/bpf/progs/test_xdp_adjust_tail_grow.c @@ -0,0 +1,33 @@ +// SPDX-License-Identifier: GPL-2.0 +#include +#include + +SEC("xdp_adjust_tail_grow") +int _xdp_adjust_tail_grow(struct xdp_md *xdp) +{ + void *data_end = (void *)(long)xdp->data_end; + void *data = (void *)(long)xdp->data; + unsigned int data_len; + int offset = 0; + + /* Data length determine test case */ + data_len = data_end - data; + + if (data_len == 54) { /* sizeof(pkt_v4) */ + offset = 4096; /* test too large offset */ + } else if (data_len == 74) { /* sizeof(pkt_v6) */ + offset = 40; + } else if (data_len == 64) { + offset = 128; + } else if (data_len == 128) { + offset = 4096 - 256 - 320 - data_len; /* Max tail grow 3520 */ + } else { + return XDP_ABORTED; /* No matching test */ + } + + if (bpf_xdp_adjust_tail(xdp, offset)) + return XDP_DROP; + return XDP_TX; +} + +char _license[] SEC("license") = "GPL"; -- cgit v1.2.3