bpf: Migrate cgroup_bpf to internal cgroup_bpf_attach_type enum

[linux-2.6-microblaze.git] / include / uapi / linux / bpf.h

diff --git a/include/uapi/linux/bpf.h b/include/uapi/linux/bpf.h
index 2db6925..191f0b2 100644 (file)
--- a/include/uapi/linux/bpf.h
+++ b/include/uapi/linux/bpf.h
@@ -84,7 +84,7 @@ struct bpf_lpm_trie_key {
 
 struct bpf_cgroup_storage_key {
        __u64   cgroup_inode_id;        /* cgroup inode id */
-       __u32   attach_type;            /* program attach type */
+       __u32   attach_type;            /* program attach type (enum bpf_attach_type) */
 };
 
 union bpf_iter_link_info {
@@ -993,6 +993,7 @@ enum bpf_attach_type {
        BPF_SK_SKB_VERDICT,
        BPF_SK_REUSEPORT_SELECT,
        BPF_SK_REUSEPORT_SELECT_OR_MIGRATE,
+       BPF_PERF_EVENT,
        __MAX_BPF_ATTACH_TYPE
 };
 
@@ -1006,6 +1007,7 @@ enum bpf_link_type {
        BPF_LINK_TYPE_ITER = 4,
        BPF_LINK_TYPE_NETNS = 5,
        BPF_LINK_TYPE_XDP = 6,
+       BPF_LINK_TYPE_PERF_EVENT = 7,
 
        MAX_BPF_LINK_TYPE,
 };
@@ -1446,6 +1448,13 @@ union bpf_attr {
                                __aligned_u64   iter_info;      /* extra bpf_iter_link_info */
                                __u32           iter_info_len;  /* iter_info length */
                        };
+                       struct {
+                               /* black box user-provided value passed through
+                                * to BPF program at the execution time and
+                                * accessible through bpf_get_attach_cookie() BPF helper
+                                */
+                               __u64           bpf_cookie;
+                       } perf_event;
                };
        } link_create;
 
@@ -4847,6 +4856,21 @@ union bpf_attr {
  *             Get address of the traced function (for tracing and kprobe programs).
  *     Return
  *             Address of the traced function.
+ *
+ * u64 bpf_get_attach_cookie(void *ctx)
+ *     Description
+ *             Get bpf_cookie value provided (optionally) during the program
+ *             attachment. It might be different for each individual
+ *             attachment, even if BPF program itself is the same.
+ *             Expects BPF program context *ctx* as a first argument.
+ *
+ *             Supported for the following program types:
+ *                     - kprobe/uprobe;
+ *                     - tracepoint;
+ *                     - perf_event.
+ *     Return
+ *             Value specified by user at BPF link creation/attachment time
+ *             or 0, if it was not specified.
  */
 #define __BPF_FUNC_MAPPER(FN)          \
        FN(unspec),                     \
@@ -5023,6 +5047,7 @@ union bpf_attr {
        FN(timer_start),                \
        FN(timer_cancel),               \
        FN(get_func_ip),                \
+       FN(get_attach_cookie),          \
        /* */
 
 /* integer value in 'imm' field of BPF_CALL instruction selects which helper