From b5c80d310527223b93e4133ac2f4c8c063c70a98 Mon Sep 17 00:00:00 2001 From: Christian Poessinger Date: Fri, 18 Dec 2020 17:13:13 +0100 Subject: xdp: T2666: switch to example code provided by xdp-tutorial --- src/xdp/include/linux/err.h | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) create mode 100644 src/xdp/include/linux/err.h (limited to 'src/xdp/include/linux/err.h') diff --git a/src/xdp/include/linux/err.h b/src/xdp/include/linux/err.h new file mode 100644 index 000000000..a3db4cf5e --- /dev/null +++ b/src/xdp/include/linux/err.h @@ -0,0 +1,33 @@ +/* SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause) */ + +#ifndef __LINUX_ERR_H +#define __LINUX_ERR_H + +#include +#include + +#define MAX_ERRNO 4095 + +#define IS_ERR_VALUE(x) ((x) >= (unsigned long)-MAX_ERRNO) + +static inline void * ERR_PTR(long error_) +{ + return (void *) error_; +} + +static inline long PTR_ERR(const void *ptr) +{ + return (long) ptr; +} + +static inline bool IS_ERR(const void *ptr) +{ + return IS_ERR_VALUE((unsigned long)ptr); +} + +static inline bool IS_ERR_OR_NULL(const void *ptr) +{ + return (!ptr) || IS_ERR_VALUE((unsigned long)ptr); +} + +#endif -- cgit v1.2.3