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bpf: Sync bpf.h to tools

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This patch sync the bpf.h to tools/.

Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Martin KaFai Lau 2019-04-26 16:39:42 -07:00 committed by Alexei Starovoitov
parent 6ac99e8f23
commit 948d930e3d
1 changed files with 43 additions and 1 deletions

44
tools/include/uapi/linux/bpf.h
View File

@ -133,6 +133,7 @@ enum bpf_map_type {
BPF_MAP_TYPE_PERCPU_CGROUP_STORAGE,
BPF_MAP_TYPE_QUEUE,
BPF_MAP_TYPE_STACK,
BPF_MAP_TYPE_SK_STORAGE,
};
/* Note that tracing related programs such as
@ -2630,6 +2631,42 @@ union bpf_attr {
* was provided.
*
* **-ERANGE** if resulting value was out of range.
*
* void *bpf_sk_storage_get(struct bpf_map *map, struct bpf_sock *sk, void *value, u64 flags)
* Description
* Get a bpf-local-storage from a sk.
*
* Logically, it could be thought of getting the value from
* a *map* with *sk* as the **key**. From this
* perspective, the usage is not much different from
* **bpf_map_lookup_elem(map, &sk)** except this
* helper enforces the key must be a **bpf_fullsock()**
* and the map must be a BPF_MAP_TYPE_SK_STORAGE also.
*
* Underneath, the value is stored locally at *sk* instead of
* the map. The *map* is used as the bpf-local-storage **type**.
* The bpf-local-storage **type** (i.e. the *map*) is searched
* against all bpf-local-storages residing at sk.
*
* An optional *flags* (BPF_SK_STORAGE_GET_F_CREATE) can be
* used such that a new bpf-local-storage will be
* created if one does not exist. *value* can be used
* together with BPF_SK_STORAGE_GET_F_CREATE to specify
* the initial value of a bpf-local-storage. If *value* is
* NULL, the new bpf-local-storage will be zero initialized.
* Return
* A bpf-local-storage pointer is returned on success.
*
* **NULL** if not found or there was an error in adding
* a new bpf-local-storage.
*
* int bpf_sk_storage_delete(struct bpf_map *map, struct bpf_sock *sk)
* Description
* Delete a bpf-local-storage from a sk.
* Return
* 0 on success.
*
* **-ENOENT** if the bpf-local-storage cannot be found.
*/
#define __BPF_FUNC_MAPPER(FN) \
FN(unspec), \
@ -2738,7 +2775,9 @@ union bpf_attr {
FN(sysctl_get_new_value), \
FN(sysctl_set_new_value), \
FN(strtol), \
FN(strtoul),
FN(strtoul), \
FN(sk_storage_get), \
FN(sk_storage_delete),
/* integer value in 'imm' field of BPF_CALL instruction selects which helper
* function eBPF program intends to call
@ -2814,6 +2853,9 @@ enum bpf_func_id {
/* BPF_FUNC_sysctl_get_name flags. */
#define BPF_F_SYSCTL_BASE_NAME (1ULL << 0)
/* BPF_FUNC_sk_storage_get flags */
#define BPF_SK_STORAGE_GET_F_CREATE (1ULL << 0)
/* Mode for BPF_FUNC_skb_adjust_room helper. */
enum bpf_adj_room_mode {
BPF_ADJ_ROOM_NET,