[bpf-next,v2,6/7] Sync uapi/bpf.h to tools/include

Message ID 153918038786.8915.164246795854402314.stgit@kernel
State Changes Requested
Delegated to: BPF Maintainers
Headers show
Series
  • Implement queue/stack maps
Related show

Commit Message

Mauricio Vasquez Oct. 10, 2018, 2:06 p.m.
Sync both files.

Signed-off-by: Mauricio Vasquez B <mauricio.vasquez@polito.it>
---
 tools/include/uapi/linux/bpf.h |   30 +++++++++++++++++++++++++++++-
 1 file changed, 29 insertions(+), 1 deletion(-)

Comments

Song Liu Oct. 10, 2018, 4:14 p.m. | #1
On Wed, Oct 10, 2018 at 7:06 AM Mauricio Vasquez B
<mauricio.vasquez@polito.it> wrote:
>
> Sync both files.
>
> Signed-off-by: Mauricio Vasquez B <mauricio.vasquez@polito.it>
Acked-by: Song Liu <songliubraving@fb.com>

> ---
>  tools/include/uapi/linux/bpf.h |   30 +++++++++++++++++++++++++++++-
>  1 file changed, 29 insertions(+), 1 deletion(-)
>
> diff --git a/tools/include/uapi/linux/bpf.h b/tools/include/uapi/linux/bpf.h
> index f9187b41dff6..c8824d5364ff 100644
> --- a/tools/include/uapi/linux/bpf.h
> +++ b/tools/include/uapi/linux/bpf.h
> @@ -103,6 +103,7 @@ enum bpf_cmd {
>         BPF_BTF_LOAD,
>         BPF_BTF_GET_FD_BY_ID,
>         BPF_TASK_FD_QUERY,
> +       BPF_MAP_LOOKUP_AND_DELETE_ELEM,
>  };
>
>  enum bpf_map_type {
> @@ -128,6 +129,8 @@ enum bpf_map_type {
>         BPF_MAP_TYPE_CGROUP_STORAGE,
>         BPF_MAP_TYPE_REUSEPORT_SOCKARRAY,
>         BPF_MAP_TYPE_PERCPU_CGROUP_STORAGE,
> +       BPF_MAP_TYPE_QUEUE,
> +       BPF_MAP_TYPE_STACK,
>  };
>
>  enum bpf_prog_type {
> @@ -462,6 +465,28 @@ union bpf_attr {
>   *     Return
>   *             0 on success, or a negative error in case of failure.
>   *
> + * int bpf_map_push_elem(struct bpf_map *map, const void *value, u64 flags)
> + *     Description
> + *             Push an element *value* in *map*. *flags* is one of:
> + *
> + *             **BPF_EXIST**
> + *             If the queue/stack is full, the oldest element is removed to
> + *             make room for this.
> + *     Return
> + *             0 on success, or a negative error in case of failure.
> + *
> + * int bpf_map_pop_elem(struct bpf_map *map, void *value)
> + *     Description
> + *             Pop an element from *map*.
> + * Return
> + *             0 on success, or a negative error in case of failure.
> + *
> + * int bpf_map_peek_elem(struct bpf_map *map, void *value)
> + *     Description
> + *             Get an element from *map* without removing it.
> + * Return
> + *             0 on success, or a negative error in case of failure.
> + *
>   * int bpf_probe_read(void *dst, u32 size, const void *src)
>   *     Description
>   *             For tracing programs, safely attempt to read *size* bytes from
> @@ -2303,7 +2328,10 @@ union bpf_attr {
>         FN(skb_ancestor_cgroup_id),     \
>         FN(sk_lookup_tcp),              \
>         FN(sk_lookup_udp),              \
> -       FN(sk_release),
> +       FN(sk_release),                 \
> +       FN(map_push_elem),              \
> +       FN(map_pop_elem),               \
> +       FN(map_peek_elem),
>
>  /* integer value in 'imm' field of BPF_CALL instruction selects which helper
>   * function eBPF program intends to call
>

Patch

diff --git a/tools/include/uapi/linux/bpf.h b/tools/include/uapi/linux/bpf.h
index f9187b41dff6..c8824d5364ff 100644
--- a/tools/include/uapi/linux/bpf.h
+++ b/tools/include/uapi/linux/bpf.h
@@ -103,6 +103,7 @@  enum bpf_cmd {
 	BPF_BTF_LOAD,
 	BPF_BTF_GET_FD_BY_ID,
 	BPF_TASK_FD_QUERY,
+	BPF_MAP_LOOKUP_AND_DELETE_ELEM,
 };
 
 enum bpf_map_type {
@@ -128,6 +129,8 @@  enum bpf_map_type {
 	BPF_MAP_TYPE_CGROUP_STORAGE,
 	BPF_MAP_TYPE_REUSEPORT_SOCKARRAY,
 	BPF_MAP_TYPE_PERCPU_CGROUP_STORAGE,
+	BPF_MAP_TYPE_QUEUE,
+	BPF_MAP_TYPE_STACK,
 };
 
 enum bpf_prog_type {
@@ -462,6 +465,28 @@  union bpf_attr {
  * 	Return
  * 		0 on success, or a negative error in case of failure.
  *
+ * int bpf_map_push_elem(struct bpf_map *map, const void *value, u64 flags)
+ * 	Description
+ * 		Push an element *value* in *map*. *flags* is one of:
+ *
+ * 		**BPF_EXIST**
+ * 		If the queue/stack is full, the oldest element is removed to
+ * 		make room for this.
+ * 	Return
+ * 		0 on success, or a negative error in case of failure.
+ *
+ * int bpf_map_pop_elem(struct bpf_map *map, void *value)
+ * 	Description
+ * 		Pop an element from *map*.
+ * Return
+ * 		0 on success, or a negative error in case of failure.
+ *
+ * int bpf_map_peek_elem(struct bpf_map *map, void *value)
+ * 	Description
+ * 		Get an element from *map* without removing it.
+ * Return
+ * 		0 on success, or a negative error in case of failure.
+ *
  * int bpf_probe_read(void *dst, u32 size, const void *src)
  * 	Description
  * 		For tracing programs, safely attempt to read *size* bytes from
@@ -2303,7 +2328,10 @@  union bpf_attr {
 	FN(skb_ancestor_cgroup_id),	\
 	FN(sk_lookup_tcp),		\
 	FN(sk_lookup_udp),		\
-	FN(sk_release),
+	FN(sk_release),			\
+	FN(map_push_elem),		\
+	FN(map_pop_elem),		\
+	FN(map_peek_elem),
 
 /* integer value in 'imm' field of BPF_CALL instruction selects which helper
  * function eBPF program intends to call