bpf: Fix helpers ctx struct types in uapi doc

Helpers may operate on two types of ctx structures: user visible ones
(e.g. `struct bpf_sock_ops`) when used in user programs, and kernel ones
(e.g. `struct bpf_sock_ops_kern`) in kernel implementation.

UAPI documentation must refer to only user visible structures.

The patch replaces references to `_kern` structures in BPF helpers
description by corresponding user visible structures.

Signed-off-by: Andrey Ignatov <rdna@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

diff --git a/include/uapi/linux/bpf.h b/include/uapi/linux/bpf.h
index 1afb606a18b991f2e7335569753ef7f93d664f14..23b334bba1a69fff71021960ae3dd21ffda60fc9 100644 (file)
--- a/include/uapi/linux/bpf.h
+++ b/include/uapi/linux/bpf.h
@@ -1361,7 +1361,7 @@ union bpf_attr {
  *     Return
  *             0
  *
- * int bpf_setsockopt(struct bpf_sock_ops_kern *bpf_socket, int level, int optname, char *optval, int optlen)
+ * int bpf_setsockopt(struct bpf_sock_ops *bpf_socket, int level, int optname, char *optval, int optlen)
  *     Description
  *             Emulate a call to **setsockopt()** on the socket associated to
  *             *bpf_socket*, which must be a full socket. The *level* at
@@ -1435,7 +1435,7 @@ union bpf_attr {
  *     Return
  *             **SK_PASS** on success, or **SK_DROP** on error.
  *
- * int bpf_sock_map_update(struct bpf_sock_ops_kern *skops, struct bpf_map *map, void *key, u64 flags)
+ * int bpf_sock_map_update(struct bpf_sock_ops *skops, struct bpf_map *map, void *key, u64 flags)
  *     Description
  *             Add an entry to, or update a *map* referencing sockets. The
  *             *skops* is used as a new value for the entry associated to
@@ -1533,7 +1533,7 @@ union bpf_attr {
  *     Return
  *             0 on success, or a negative error in case of failure.
  *
- * int bpf_perf_prog_read_value(struct bpf_perf_event_data_kern *ctx, struct bpf_perf_event_value *buf, u32 buf_size)
+ * int bpf_perf_prog_read_value(struct bpf_perf_event_data *ctx, struct bpf_perf_event_value *buf, u32 buf_size)
  *     Description
  *             For en eBPF program attached to a perf event, retrieve the
  *             value of the event counter associated to *ctx* and store it in
@@ -1544,7 +1544,7 @@ union bpf_attr {
  *     Return
  *             0 on success, or a negative error in case of failure.
  *
- * int bpf_getsockopt(struct bpf_sock_ops_kern *bpf_socket, int level, int optname, char *optval, int optlen)
+ * int bpf_getsockopt(struct bpf_sock_ops *bpf_socket, int level, int optname, char *optval, int optlen)
  *     Description
  *             Emulate a call to **getsockopt()** on the socket associated to
  *             *bpf_socket*, which must be a full socket. The *level* at
@@ -1588,7 +1588,7 @@ union bpf_attr {
  *     Return
  *             0
  *
- * int bpf_sock_ops_cb_flags_set(struct bpf_sock_ops_kern *bpf_sock, int argval)
+ * int bpf_sock_ops_cb_flags_set(struct bpf_sock_ops *bpf_sock, int argval)
  *     Description
  *             Attempt to set the value of the **bpf_sock_ops_cb_flags** field
  *             for the full TCP socket associated to *bpf_sock_ops* to
@@ -1721,7 +1721,7 @@ union bpf_attr {
  *     Return
  *             0 on success, or a negative error in case of failure.
  *
- * int bpf_bind(struct bpf_sock_addr_kern *ctx, struct sockaddr *addr, int addr_len)
+ * int bpf_bind(struct bpf_sock_addr *ctx, struct sockaddr *addr, int addr_len)
  *     Description
  *             Bind the socket associated to *ctx* to the address pointed by
  *             *addr*, of length *addr_len*. This allows for making outgoing