tools/testing/selftests/bpf/progs/test_verif_scale1.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 // Copyright (c) 2019 Facebook
   3 #include <linux/bpf.h>
   4 #include "bpf_helpers.h"
   5 #define ATTR __attribute__((noinline))
   6 #include "test_jhash.h"
   7
   8 SEC("scale90_noinline")
   9 int balancer_ingress(struct __sk_buff *ctx)
  10 {
  11         void *data_end = (void *)(long)ctx->data_end;
  12         void *data = (void *)(long)ctx->data;
  13         void *ptr;
  14         int ret = 0, nh_off, i = 0;
  15
  16         nh_off = 14;
  17
  18         /* pragma unroll doesn't work on large loops */
  19
  20 #define C do { \
  21         ptr = data + i; \
  22         if (ptr + nh_off > data_end) \
  23                 break; \
  24         ctx->tc_index = jhash(ptr, nh_off, ctx->cb[0] + i++); \
  25         } while (0);
  26 #define C30 C;C;C;C;C;C;C;C;C;C;C;C;C;C;C;C;C;C;C;C;C;C;C;C;C;C;C;C;C;C;
  27         C30;C30;C30; /* 90 calls */
  28         return 0;
  29 }
  30 char _license[] SEC("license") = "GPL";