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| author | Martin KaFai Lau <martin.lau@kernel.org> | 2026-09-17 13:05:29 -0700 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2026-09-19 05:32:55 +0000 |
| commit | 3668bc410260fbd97784c3c4cdc73cf06f86f940 (patch) | |
| tree | 6cb65e18496b6156afb9dafee7f5c040a5f969f9 /include/linux | |
| parent | 5db69b0fbdc88150e80c1b904f5201502c365b35 (diff) | |
| download | linux-next-3668bc410260fbd97784c3c4cdc73cf06f86f940.tar.gz linux-next-3668bc410260fbd97784c3c4cdc73cf06f86f940.zip | |
bpf: Add bpf_struct_ops accessor helpers
Add the helper functions bpf_struct_ops_map_kdata() and
bpf_struct_ops_map_cfi_stubs() in bpf_struct_ops.c. They will be called
from cgroup.c in the upcoming patch to create a struct_ops to cgroup
attachment link.
bpf_struct_ops_valid_to_reg() is also exposed for the upcoming caller
in cgroup.c.
The link update validation is also refactored into a new function
bpf_struct_ops_link_update_check() such that it can be reused by the
caller in cgroup.c in the upcoming patch.
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
Signed-off-by: Amery Hung <ameryhung@gmail.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Reviewed-by: Emil Tsalapatis <emil@etsalapatis.com>
Link: https://patch.msgid.link/20260917200542.3689605-4-ameryhung@gmail.com
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/bpf.h | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/include/linux/bpf.h b/include/linux/bpf.h index 1198404885c8..90ab467d25a2 100644 --- a/include/linux/bpf.h +++ b/include/linux/bpf.h @@ -2290,6 +2290,11 @@ u32 bpf_struct_ops_id(const void *kdata); int bpf_struct_ops_for_each_prog(const void *kdata, int (*cb)(struct bpf_prog *prog, void *data), void *data); +void *bpf_struct_ops_map_kdata(struct bpf_map *map); +void *bpf_struct_ops_map_cfi_stubs(struct bpf_map *map); +bool bpf_struct_ops_valid_to_reg(struct bpf_map *map); +int bpf_struct_ops_link_update_check(struct bpf_map *new_map, struct bpf_map *old_map, + struct bpf_map *expected_old_map); #ifdef CONFIG_NET /* Define it here to avoid the use of forward declaration */ @@ -2354,6 +2359,28 @@ static inline void bpf_map_struct_ops_info_fill(struct bpf_map_info *info, struc static inline void bpf_struct_ops_desc_release(struct bpf_struct_ops_desc *st_ops_desc) { } +static inline u32 bpf_struct_ops_id(void *kdata) +{ + return 0; +} +static inline void *bpf_struct_ops_map_kdata(struct bpf_map *map) +{ + return NULL; +} +static inline void *bpf_struct_ops_map_cfi_stubs(struct bpf_map *map) +{ + return NULL; +} +static inline bool bpf_struct_ops_valid_to_reg(struct bpf_map *map) +{ + return false; +} +static inline int bpf_struct_ops_link_update_check(struct bpf_map *new_map, + struct bpf_map *old_map, + struct bpf_map *expected_old_map) +{ + return -EOPNOTSUPP; +} #endif |