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| author |   Daniel Borkmann <dborkman@redhat.com> | 2013-03-21 22:22:03 +0100 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2013-03-21 17:25:56 -0400 |
| commit | 79617801ea0c0e6664cb497d4c1892c2ff407364 (patch) | |
| tree | 5c1f4af6a7c3a6e13a33f054d7c58dee146f15e3 /include/linux | |
| parent | sh_eth: use managed device API (diff) | |
| download | linux-dev-79617801ea0c0e6664cb497d4c1892c2ff407364.tar.xz linux-dev-79617801ea0c0e6664cb497d4c1892c2ff407364.zip | |
filter: bpf_jit_comp: refactor and unify BPF JIT image dump output
If bpf_jit_enable > 1, then we dump the emitted JIT compiled image
after creation. Currently, only SPARC and PowerPC has similar output
as in the reference implementation on x86_64. Make a small helper
function in order to reduce duplicated code and make the dump output
uniform across architectures x86_64, SPARC, PPC, ARM (e.g. on ARM
flen, pass and proglen are currently not shown, but would be
interesting to know as well), also for future BPF JIT implementations
on other archs.
Cc: Mircea Gherzan <mgherzan@gmail.com>
Cc: Matt Evans <matt@ozlabs.org>
Cc: Eric Dumazet <eric.dumazet@google.com>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/filter.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/include/linux/filter.h b/include/linux/filter.h index d2059cb4e465..d7d25083130b 100644 --- a/include/linux/filter.h +++ b/include/linux/filter.h @@ -50,6 +50,16 @@ extern int sk_get_filter(struct sock *sk, struct sock_filter __user *filter, uns #ifdef CONFIG_BPF_JIT extern void bpf_jit_compile(struct sk_filter *fp); extern void bpf_jit_free(struct sk_filter *fp); + +static inline void bpf_jit_dump(unsigned int flen, unsigned int proglen, + u32 pass, void *image) +{ + pr_err("flen=%u proglen=%u pass=%u image=%p\n", + flen, proglen, pass, image); + if (image) + print_hex_dump(KERN_ERR, "JIT code: ", DUMP_PREFIX_ADDRESS, + 16, 1, image, proglen, false); +} #define SK_RUN_FILTER(FILTER, SKB) (*FILTER->bpf_func)(SKB, FILTER->insns) #else static inline void bpf_jit_compile(struct sk_filter *fp) |