diff options
| author |   Björn Töpel <bjorn.topel@intel.com> | 2019-12-13 18:51:09 +0100 |
|---|---|---|
| committer |   Alexei Starovoitov <ast@kernel.org> | 2019-12-13 13:09:32 -0800 |
| commit | 7e6897f95935973c3253fd756135b5ea58043dc8 (patch) | |
| tree | b51f503250727273df277698fac760b6cdc26393 /include/linux/bpf.h | |
| parent | bpf: Introduce BPF dispatcher (diff) | |
| download | linux-dev-7e6897f95935973c3253fd756135b5ea58043dc8.tar.xz linux-dev-7e6897f95935973c3253fd756135b5ea58043dc8.zip | |
bpf, xdp: Start using the BPF dispatcher for XDP
This commit adds a BPF dispatcher for XDP. The dispatcher is updated
from the XDP control-path, dev_xdp_install(), and used when an XDP
program is run via bpf_prog_run_xdp().
Signed-off-by: Björn Töpel <bjorn.topel@intel.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20191213175112.30208-4-bjorn.topel@gmail.com
Diffstat (limited to 'include/linux/bpf.h')
| -rw-r--r-- | include/linux/bpf.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/include/linux/bpf.h b/include/linux/bpf.h index 53ae4a50abe4..5970989b99d1 100644 --- a/include/linux/bpf.h +++ b/include/linux/bpf.h @@ -488,6 +488,14 @@ struct bpf_dispatcher { u32 image_off; }; +static __always_inline unsigned int bpf_dispatcher_nopfunc( + const void *ctx, + const struct bpf_insn *insnsi, + unsigned int (*bpf_func)(const void *, + const struct bpf_insn *)) +{ + return bpf_func(ctx, insnsi); +} #ifdef CONFIG_BPF_JIT struct bpf_trampoline *bpf_trampoline_lookup(u64 key); int bpf_trampoline_link_prog(struct bpf_prog *prog); @@ -997,6 +1005,8 @@ int btf_distill_func_proto(struct bpf_verifier_log *log, int btf_check_func_arg_match(struct bpf_verifier_env *env, int subprog); +struct bpf_prog *bpf_prog_by_id(u32 id); + #else /* !CONFIG_BPF_SYSCALL */ static inline struct bpf_prog *bpf_prog_get(u32 ufd) { @@ -1128,6 +1138,11 @@ static inline int bpf_prog_test_run_flow_dissector(struct bpf_prog *prog, static inline void bpf_map_put(struct bpf_map *map) { } + +static inline struct bpf_prog *bpf_prog_by_id(u32 id) +{ + return ERR_PTR(-ENOTSUPP); +} #endif /* CONFIG_BPF_SYSCALL */ static inline struct bpf_prog *bpf_prog_get_type(u32 ufd, |