tools/testing/selftests/bpf/progs/test_xdp_context_test_run.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 #include <linux/bpf.h>
   3 #include <bpf/bpf_helpers.h>
   4
   5 SEC("xdp")
   6 int xdp_context(struct xdp_md *xdp)
   7 {
   8         void *data = (void *)(long)xdp->data;
   9         __u32 *metadata = (void *)(long)xdp->data_meta;
  10         __u32 ret;
  11
  12         if (metadata + 1 > data)
  13                 return XDP_ABORTED;
  14         ret = *metadata;
  15         if (bpf_xdp_adjust_meta(xdp, 4))
  16                 return XDP_ABORTED;
  17         return ret;
  18 }
  19
  20 char _license[] SEC("license") = "GPL";