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[NETFILTER]: nf_sockopts list head cleanup

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Code is using knowledge that nf_sockopt_ops::list list_head is first
field in structure by using casts. Switch to list_for_each_entry()
itetators while I am at it.

Signed-off-by: Alexey Dobriyan <adobriyan@sw.ru>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Alexey Dobriyan 2007-11-05 20:44:06 -08:00 committed by David S. Miller
parent d1332e0ab8
commit 55d84acd36
1 changed files with 4 additions and 9 deletions
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13
net/netfilter/nf_sockopt.c
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@ -23,14 +23,13 @@ static inline int overlap(int min1, int max1, int min2, int max2)
/* Functions to register sockopt ranges (exclusive). */
int nf_register_sockopt(struct nf_sockopt_ops *reg)
{
struct list_head *i;
struct nf_sockopt_ops *ops;
int ret = 0;
if (mutex_lock_interruptible(&nf_sockopt_mutex) != 0)
return -EINTR;
list_for_each(i, &nf_sockopts) {
struct nf_sockopt_ops *ops = (struct nf_sockopt_ops *)i;
list_for_each_entry(ops, &nf_sockopts, list) {
if (ops->pf == reg->pf
&& (overlap(ops->set_optmin, ops->set_optmax,
reg->set_optmin, reg->set_optmax)
@ -65,7 +64,6 @@ EXPORT_SYMBOL(nf_unregister_sockopt);
static int nf_sockopt(struct sock *sk, int pf, int val,
char __user *opt, int *len, int get)
{
struct list_head *i;
struct nf_sockopt_ops *ops;
int ret;
@ -75,8 +73,7 @@ static int nf_sockopt(struct sock *sk, int pf, int val,
if (mutex_lock_interruptible(&nf_sockopt_mutex) != 0)
return -EINTR;
list_for_each(i, &nf_sockopts) {
ops = (struct nf_sockopt_ops *)i;
list_for_each_entry(ops, &nf_sockopts, list) {
if (ops->pf == pf) {
if (!try_module_get(ops->owner))
goto out_nosup;
@ -124,7 +121,6 @@ EXPORT_SYMBOL(nf_getsockopt);
static int compat_nf_sockopt(struct sock *sk, int pf, int val,
char __user *opt, int *len, int get)
{
struct list_head *i;
struct nf_sockopt_ops *ops;
int ret;
@ -135,8 +131,7 @@ static int compat_nf_sockopt(struct sock *sk, int pf, int val,
if (mutex_lock_interruptible(&nf_sockopt_mutex) != 0)
return -EINTR;
list_for_each(i, &nf_sockopts) {
ops = (struct nf_sockopt_ops *)i;
list_for_each_entry(ops, &nf_sockopts, list) {
if (ops->pf == pf) {
if (!try_module_get(ops->owner))
goto out_nosup;