diff options
| -rw-r--r-- | include/linux/filter.h | 78 | ||||
| -rw-r--r-- | kernel/bpf/core.c | 2 |
2 files changed, 41 insertions, 39 deletions
diff --git a/include/linux/filter.h b/include/linux/filter.h index 4b59edead908..1a0bc6d134d7 100644 --- a/include/linux/filter.h +++ b/include/linux/filter.h @@ -4,12 +4,18 @@ #ifndef __LINUX_FILTER_H__ #define __LINUX_FILTER_H__ +#include <stdarg.h> + #include <linux/atomic.h> #include <linux/compat.h> #include <linux/skbuff.h> +#include <linux/linkage.h> +#include <linux/printk.h> #include <linux/workqueue.h> -#include <uapi/linux/filter.h> + #include <asm/cacheflush.h> + +#include <uapi/linux/filter.h> #include <uapi/linux/bpf.h> struct sk_buff; @@ -363,14 +369,6 @@ struct bpf_prog *bpf_prog_realloc(struct bpf_prog *fp_old, unsigned int size, gfp_t gfp_extra_flags); void __bpf_prog_free(struct bpf_prog *fp); -typedef void (*bpf_jit_fill_hole_t)(void *area, unsigned int size); - -struct bpf_binary_header * -bpf_jit_binary_alloc(unsigned int proglen, u8 **image_ptr, - unsigned int alignment, - bpf_jit_fill_hole_t bpf_fill_ill_insns); -void bpf_jit_binary_free(struct bpf_binary_header *hdr); - static inline void bpf_prog_unlock_free(struct bpf_prog *fp) { bpf_prog_unlock_ro(fp); @@ -393,6 +391,38 @@ void sk_filter_uncharge(struct sock *sk, struct sk_filter *fp); u64 __bpf_call_base(u64 r1, u64 r2, u64 r3, u64 r4, u64 r5); void bpf_int_jit_compile(struct bpf_prog *fp); +#ifdef CONFIG_BPF_JIT +typedef void (*bpf_jit_fill_hole_t)(void *area, unsigned int size); + +struct bpf_binary_header * +bpf_jit_binary_alloc(unsigned int proglen, u8 **image_ptr, + unsigned int alignment, + bpf_jit_fill_hole_t bpf_fill_ill_insns); +void bpf_jit_binary_free(struct bpf_binary_header *hdr); + +void bpf_jit_compile(struct bpf_prog *fp); +void bpf_jit_free(struct bpf_prog *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=%pK\n", + flen, proglen, pass, image); + if (image) + print_hex_dump(KERN_ERR, "JIT code: ", DUMP_PREFIX_OFFSET, + 16, 1, image, proglen, false); +} +#else +static inline void bpf_jit_compile(struct bpf_prog *fp) +{ +} + +static inline void bpf_jit_free(struct bpf_prog *fp) +{ + bpf_prog_unlock_free(fp); +} +#endif /* CONFIG_BPF_JIT */ + #define BPF_ANC BIT(15) static inline u16 bpf_anc_helper(const struct sock_filter *ftest) @@ -440,36 +470,6 @@ static inline void *bpf_load_pointer(const struct sk_buff *skb, int k, return bpf_internal_load_pointer_neg_helper(skb, k, size); } -#ifdef CONFIG_BPF_JIT -#include <stdarg.h> -#include <linux/linkage.h> -#include <linux/printk.h> - -void bpf_jit_compile(struct bpf_prog *fp); -void bpf_jit_free(struct bpf_prog *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=%pK\n", - flen, proglen, pass, image); - if (image) - print_hex_dump(KERN_ERR, "JIT code: ", DUMP_PREFIX_OFFSET, - 16, 1, image, proglen, false); -} -#else -#include <linux/slab.h> - -static inline void bpf_jit_compile(struct bpf_prog *fp) -{ -} - -static inline void bpf_jit_free(struct bpf_prog *fp) -{ - bpf_prog_unlock_free(fp); -} -#endif /* CONFIG_BPF_JIT */ - static inline int bpf_tell_extensions(void) { return SKF_AD_MAX; diff --git a/kernel/bpf/core.c b/kernel/bpf/core.c index 8ee520f0ec70..8b7002488251 100644 --- a/kernel/bpf/core.c +++ b/kernel/bpf/core.c @@ -128,6 +128,7 @@ void __bpf_prog_free(struct bpf_prog *fp) } EXPORT_SYMBOL_GPL(__bpf_prog_free); +#ifdef CONFIG_BPF_JIT struct bpf_binary_header * bpf_jit_binary_alloc(unsigned int proglen, u8 **image_ptr, unsigned int alignment, @@ -163,6 +164,7 @@ void bpf_jit_binary_free(struct bpf_binary_header *hdr) { module_free(NULL, hdr); } +#endif /* CONFIG_BPF_JIT */ /* Base function for offset calculation. Needs to go into .text section, * therefore keeping it non-static as well; will also be used by JITs |