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net: introduce helper macro for_each_cmsghdr

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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
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4
net/rds/send.c
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@ -826,7 +826,7 @@ static int rds_rm_size(struct msghdr *msg, int data_len)
int cmsg_groups = 0;
int retval;
for (cmsg = CMSG_FIRSTHDR(msg); cmsg; cmsg = CMSG_NXTHDR(msg, cmsg)) {
for_each_cmsghdr(cmsg, msg) {
if (!CMSG_OK(msg, cmsg))
return -EINVAL;
@ -878,7 +878,7 @@ static int rds_cmsg_send(struct rds_sock *rs, struct rds_message *rm,
struct cmsghdr *cmsg;
int ret = 0;
for (cmsg = CMSG_FIRSTHDR(msg); cmsg; cmsg = CMSG_NXTHDR(msg, cmsg)) {
for_each_cmsghdr(cmsg, msg) {
if (!CMSG_OK(msg, cmsg))
return -EINVAL;