In order to provide type match support we require a new type of
relocation which, in turn, requires toolchain support. Recent LLVM/Clang
versions support a new value for the last argument to the
__builtin_preserve_type_info builtin, for example.
With this change we introduce the necessary constants into relevant
header files, mirroring what the compiler may support.
Signed-off-by: Daniel Müller <deso@xxxxxxxxxx>
---
include/uapi/linux/bpf.h | 1 +
tools/include/uapi/linux/bpf.h | 1 +
tools/lib/bpf/bpf_core_read.h | 1 +
3 files changed, 3 insertions(+)
diff --git a/include/uapi/linux/bpf.h b/include/uapi/linux/bpf.h
index e81362..42605c 100644
--- a/include/uapi/linux/bpf.h
+++ b/include/uapi/linux/bpf.h
@@ -6782,6 +6782,7 @@ enum bpf_core_relo_kind {
BPF_CORE_TYPE_SIZE = 9, /* type size in bytes */
BPF_CORE_ENUMVAL_EXISTS = 10, /* enum value existence in target kernel */
BPF_CORE_ENUMVAL_VALUE = 11, /* enum value integer value */
+ BPF_CORE_TYPE_MATCHES = 12, /* type match in target kernel */
};
/*
diff --git a/tools/include/uapi/linux/bpf.h b/tools/include/uapi/linux/bpf.h
index e81362..42605c 100644
--- a/tools/include/uapi/linux/bpf.h
+++ b/tools/include/uapi/linux/bpf.h
@@ -6782,6 +6782,7 @@ enum bpf_core_relo_kind {
BPF_CORE_TYPE_SIZE = 9, /* type size in bytes */
BPF_CORE_ENUMVAL_EXISTS = 10, /* enum value existence in target kernel */
BPF_CORE_ENUMVAL_VALUE = 11, /* enum value integer value */
+ BPF_CORE_TYPE_MATCHES = 12, /* type match in target kernel */
};
/*
diff --git a/tools/lib/bpf/bpf_core_read.h b/tools/lib/bpf/bpf_core_read.h
index fd48b1..2308f49 100644
--- a/tools/lib/bpf/bpf_core_read.h
+++ b/tools/lib/bpf/bpf_core_read.h
@@ -29,6 +29,7 @@ enum bpf_type_id_kind {
enum bpf_type_info_kind {
BPF_TYPE_EXISTS = 0, /* type existence in target kernel */
BPF_TYPE_SIZE = 1, /* type size in target kernel */
+ BPF_TYPE_MATCHES = 2, /* type match in target kernel */
};
/* second argument to __builtin_preserve_enum_value() built-in */
--
2.30.2
