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>
This commit is contained in:
Gu Zheng 2014-12-11 11:22:04 +08:00 committed by David S. Miller
parent dd0bcc0bc8
commit f95b414edb
10 changed files with 15 additions and 16 deletions

View file

@ -657,7 +657,7 @@ int ip6_datagram_send_ctl(struct net *net, struct sock *sk,
int len;
int err = 0;
for (cmsg = CMSG_FIRSTHDR(msg); cmsg; cmsg = CMSG_NXTHDR(msg, cmsg)) {
for_each_cmsghdr(cmsg, msg) {
int addr_type;
if (!CMSG_OK(msg, cmsg)) {