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| author |   David S. Miller <davem@davemloft.net> | 2017-04-28 15:48:16 -0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-04-28 15:48:16 -0400 |
| commit | 4c042a80c1776477d8f13d0b214809a2eaedf01d (patch) | |
| tree | f36c473e0e53ef2018334abd8cffcf42b4dd70b6 /tools/testing/selftests/bpf/bpf_util.h | |
| parent | Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec-next (diff) | |
| parent | bpf: provide a generic macro for percpu values for selftests (diff) | |
| download | wireguard-linux-4c042a80c1776477d8f13d0b214809a2eaedf01d.tar.xz wireguard-linux-4c042a80c1776477d8f13d0b214809a2eaedf01d.zip | |
Merge branch 'bpf-misc-next'
Daniel Borkmann says:
====================
Misc BPF updates
This set cleans up ldimm64 leftovers from early eBPF days and
adds couple of test cases related to this to the verifier test
suite. It also cleans up the kallsyms spinlock (had same patch
also in queue) by relaxing it through switching to _bh variant.
It fixes up test_progs in relation to htons/ntohs and adds
accessor macros for the percpu tests in test_maps.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to '')
| -rw-r--r-- | tools/testing/selftests/bpf/bpf_util.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/bpf_util.h b/tools/testing/selftests/bpf/bpf_util.h index 84a5d1823f02..369e7d7bba80 100644 --- a/tools/testing/selftests/bpf/bpf_util.h +++ b/tools/testing/selftests/bpf/bpf_util.h @@ -6,6 +6,25 @@ #include <string.h> #include <errno.h> +#include <asm/byteorder.h> + +#if __BYTE_ORDER == __LITTLE_ENDIAN +# define __bpf_ntohs(x) __builtin_bswap16(x) +# define __bpf_htons(x) __builtin_bswap16(x) +#elif __BYTE_ORDER == __BIG_ENDIAN +# define __bpf_ntohs(x) (x) +# define __bpf_htons(x) (x) +#else +# error "Fix your __BYTE_ORDER?!" +#endif + +#define bpf_htons(x) \ + (__builtin_constant_p(x) ? \ + __constant_htons(x) : __bpf_htons(x)) +#define bpf_ntohs(x) \ + (__builtin_constant_p(x) ? \ + __constant_ntohs(x) : __bpf_ntohs(x)) + static inline unsigned int bpf_num_possible_cpus(void) { static const char *fcpu = "/sys/devices/system/cpu/possible"; @@ -35,4 +54,11 @@ static inline unsigned int bpf_num_possible_cpus(void) return possible_cpus; } +#define __bpf_percpu_val_align __attribute__((__aligned__(8))) + +#define BPF_DECLARE_PERCPU(type, name) \ + struct { type v; /* padding */ } __bpf_percpu_val_align \ + name[bpf_num_possible_cpus()] +#define bpf_percpu(name, cpu) name[(cpu)].v + #endif /* __BPF_UTIL__ */ |