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| author | Gu Zheng <guz.fnst@cn.fujitsu.com> | 2014-12-11 11:22:04 +0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-12-10 22:41:55 -0500 |
| commit | f95b414edb18de59940dcebbefb49cf25c6d505c (patch) | |
| tree | 654de508641fd2c82428f43387b72fd1a3dcef42 /include/linux/socket.h | |
| parent | dd0bcc0bc842e0d2c981102376d867c1a8bad320 (diff) | |
| download | linux-f95b414edb18de59940dcebbefb49cf25c6d505c.tar.gz linux-f95b414edb18de59940dcebbefb49cf25c6d505c.tar.bz2 linux-f95b414edb18de59940dcebbefb49cf25c6d505c.zip | |
net: introduce helper macro for_each_cmsghdr
Introduce helper macro for_each_cmsghdr as a wrapper of the enumerating
cmsghdr from msghdr, just cleanup.
Signed-off-by: Gu Zheng <guz.fnst@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/socket.h')
| -rw-r--r-- | include/linux/socket.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/socket.h b/include/linux/socket.h index 048d6d6eed6d..6e49a14365dc 100644 --- a/include/linux/socket.h +++ b/include/linux/socket.h @@ -103,6 +103,10 @@ struct cmsghdr { (cmsg)->cmsg_len <= (unsigned long) \ ((mhdr)->msg_controllen - \ ((char *)(cmsg) - (char *)(mhdr)->msg_control))) +#define for_each_cmsghdr(cmsg, msg) \ + for (cmsg = CMSG_FIRSTHDR(msg); \ + cmsg; \ + cmsg = CMSG_NXTHDR(msg, cmsg)) /* * Get the next cmsg header |