tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
netlink: simplify NLMSG_DATA with NLMSG_HDRLEN
The NLMSG_LENGTH(0) may confuse the API users,
NLMSG_HDRLEN is much more clear.
Besides, some code style problems are also fixed.
Signed-off-by: Chen Li <chenli@uniontech.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
authored by
Chen Li
and committed by
David S. Miller
d409989b
0d155170
+3
-2
+3
-2
include/uapi/linux/netlink.h
+3
-2
include/uapi/linux/netlink.h
···
91
91
#define NLMSG_HDRLEN ((int) NLMSG_ALIGN(sizeof(struct nlmsghdr)))
92
92
#define NLMSG_LENGTH(len) ((len) + NLMSG_HDRLEN)
93
93
#define NLMSG_SPACE(len) NLMSG_ALIGN(NLMSG_LENGTH(len))
94
-
#define NLMSG_DATA(nlh) ((void*)(((char*)nlh) + NLMSG_LENGTH(0)))
94
+
#define NLMSG_DATA(nlh) ((void *)(((char *)nlh) + NLMSG_HDRLEN))
95
95
#define NLMSG_NEXT(nlh,len) ((len) -= NLMSG_ALIGN((nlh)->nlmsg_len), \
96
-
(struct nlmsghdr*)(((char*)(nlh)) + NLMSG_ALIGN((nlh)->nlmsg_len)))
96
+
(struct nlmsghdr *)(((char *)(nlh)) + \
97
+
NLMSG_ALIGN((nlh)->nlmsg_len)))
97
98
#define NLMSG_OK(nlh,len) ((len) >= (int)sizeof(struct nlmsghdr) && \
98
99
(nlh)->nlmsg_len >= sizeof(struct nlmsghdr) && \
99
100
(nlh)->nlmsg_len <= (len))