diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/bpf.h | 2 | ||||
| -rw-r--r-- | include/uapi/linux/bpf.h | 21 |
2 files changed, 22 insertions, 1 deletions
diff --git a/include/linux/bpf.h b/include/linux/bpf.h index ca4ac2a39def..cd8790d2c6ed 100644 --- a/include/linux/bpf.h +++ b/include/linux/bpf.h @@ -788,6 +788,8 @@ extern const struct bpf_func_proto bpf_sock_map_update_proto; extern const struct bpf_func_proto bpf_sock_hash_update_proto; extern const struct bpf_func_proto bpf_get_current_cgroup_id_proto; +extern const struct bpf_func_proto bpf_get_local_storage_proto; + /* Shared helpers among cBPF and eBPF. */ void bpf_user_rnd_init_once(void); u64 bpf_user_rnd_u32(u64 r1, u64 r2, u64 r3, u64 r4, u64 r5); diff --git a/include/uapi/linux/bpf.h b/include/uapi/linux/bpf.h index b10118ee5afe..dd5758dc35d3 100644 --- a/include/uapi/linux/bpf.h +++ b/include/uapi/linux/bpf.h @@ -2095,6 +2095,24 @@ union bpf_attr { * Return * A 64-bit integer containing the current cgroup id based * on the cgroup within which the current task is running. + * + * void* get_local_storage(void *map, u64 flags) + * Description + * Get the pointer to the local storage area. + * The type and the size of the local storage is defined + * by the *map* argument. + * The *flags* meaning is specific for each map type, + * and has to be 0 for cgroup local storage. + * + * Depending on the bpf program type, a local storage area + * can be shared between multiple instances of the bpf program, + * running simultaneously. + * + * A user should care about the synchronization by himself. + * For example, by using the BPF_STX_XADD instruction to alter + * the shared data. + * Return + * Pointer to the local storage area. */ #define __BPF_FUNC_MAPPER(FN) \ FN(unspec), \ @@ -2177,7 +2195,8 @@ union bpf_attr { FN(rc_repeat), \ FN(rc_keydown), \ FN(skb_cgroup_id), \ - FN(get_current_cgroup_id), + FN(get_current_cgroup_id), \ + FN(get_local_storage), /* integer value in 'imm' field of BPF_CALL instruction selects which helper * function eBPF program intends to call |