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net-tun: Add type safety to tun_xdp_to_ptr() and tun_ptr_to_xdp()

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This reduces likelihood of incorrect use.

Test: builds

Signed-off-by: Maciej Żenczykowski <maze@google.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20200819010710.3959310-1-zenczykowski@gmail.com
This commit is contained in:
Maciej Żenczykowski
2020-08-18 18:07:09 -07:00
committed by Alexei Starovoitov
parent 3708115614
commit b558b6c240
2 changed files with 7 additions and 7 deletions
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8
include/linux/if_tun.h
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@@ -28,8 +28,8 @@ struct tun_xdp_hdr {
struct socket *tun_get_socket(struct file *);
struct ptr_ring *tun_get_tx_ring(struct file *file);
bool tun_is_xdp_frame(void *ptr);
void *tun_xdp_to_ptr(void *ptr);
void *tun_ptr_to_xdp(void *ptr);
void *tun_xdp_to_ptr(struct xdp_frame *xdp);
struct xdp_frame *tun_ptr_to_xdp(void *ptr);
void tun_ptr_free(void *ptr);
#else
#include <linux/err.h>
@@ -48,11 +48,11 @@ static inline bool tun_is_xdp_frame(void *ptr)
{
return false;
}
static inline void *tun_xdp_to_ptr(void *ptr)
static inline void *tun_xdp_to_ptr(struct xdp_frame *xdp)
{
return NULL;
}
static inline void *tun_ptr_to_xdp(void *ptr)
static inline struct xdp_frame *tun_ptr_to_xdp(void *ptr)
{
return NULL;
}