Sync tools/include/linux/types.h with the UAPI one to fix this build error: make -C samples/bpf/../../tools/lib/bpf/ RM='rm -rf' LDFLAGS= srctree=samples/bpf/../../ O= HOSTCC samples/bpf/sock_example In file included from samples/bpf/sock_example.c:27: /usr/include/linux/ip.h:102:2: error: unknown type name ‘__sum16’ 102 | __sum16 check; | ^~~~~~~ make[2]: *** [scripts/Makefile.host:92: samples/bpf/sock_example] Error 1 make[1]: *** [Makefile:1763: samples/bpf/] Error 2 Signed-off-by: Matteo Croce <mcroce@xxxxxxxxxx> --- tools/include/linux/types.h | 3 +++ 1 file changed, 3 insertions(+) diff --git a/tools/include/linux/types.h b/tools/include/linux/types.h index 154eb4e3ca7c..5266dbfee945 100644 --- a/tools/include/linux/types.h +++ b/tools/include/linux/types.h @@ -58,6 +58,9 @@ typedef __u32 __bitwise __be32; typedef __u64 __bitwise __le64; typedef __u64 __bitwise __be64; +typedef __u16 __bitwise __sum16; +typedef __u32 __bitwise __wsum; + typedef struct { int counter; } atomic_t; -- 2.21.0