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netfilter: ip_set: rename nfnl_dereference()/nfnl_set()
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The next patch will introduce a nfnl_dereference() macro that actually
checks that the appropriate mutex is held and therefore needs a
subsystem argument.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Patrick McHardy authored and Pablo Neira Ayuso committed Feb 25, 2014
1 parent d2bf2f3 commit 3e90ebd
Showing 1 changed file with 23 additions and 23 deletions.
46 changes: 23 additions & 23 deletions net/netfilter/ipset/ip_set_core.c
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Original file line number Diff line number Diff line change
Expand Up @@ -54,10 +54,10 @@ MODULE_DESCRIPTION("core IP set support");
MODULE_ALIAS_NFNL_SUBSYS(NFNL_SUBSYS_IPSET);

/* When the nfnl mutex is held: */
#define nfnl_dereference(p) \
#define ip_set_dereference(p) \
rcu_dereference_protected(p, 1)
#define nfnl_set(inst, id) \
nfnl_dereference((inst)->ip_set_list)[id]
#define ip_set(inst, id) \
ip_set_dereference((inst)->ip_set_list)[id]

/*
* The set types are implemented in modules and registered set types
Expand Down Expand Up @@ -640,7 +640,7 @@ ip_set_nfnl_get_byindex(struct net *net, ip_set_id_t index)
return IPSET_INVALID_ID;

nfnl_lock(NFNL_SUBSYS_IPSET);
set = nfnl_set(inst, index);
set = ip_set(inst, index);
if (set)
__ip_set_get(set);
else
Expand All @@ -666,7 +666,7 @@ ip_set_nfnl_put(struct net *net, ip_set_id_t index)

nfnl_lock(NFNL_SUBSYS_IPSET);
if (!inst->is_deleted) { /* already deleted from ip_set_net_exit() */
set = nfnl_set(inst, index);
set = ip_set(inst, index);
if (set != NULL)
__ip_set_put(set);
}
Expand Down Expand Up @@ -734,7 +734,7 @@ find_set_and_id(struct ip_set_net *inst, const char *name, ip_set_id_t *id)

*id = IPSET_INVALID_ID;
for (i = 0; i < inst->ip_set_max; i++) {
set = nfnl_set(inst, i);
set = ip_set(inst, i);
if (set != NULL && STREQ(set->name, name)) {
*id = i;
break;
Expand All @@ -760,7 +760,7 @@ find_free_id(struct ip_set_net *inst, const char *name, ip_set_id_t *index,

*index = IPSET_INVALID_ID;
for (i = 0; i < inst->ip_set_max; i++) {
s = nfnl_set(inst, i);
s = ip_set(inst, i);
if (s == NULL) {
if (*index == IPSET_INVALID_ID)
*index = i;
Expand Down Expand Up @@ -883,7 +883,7 @@ ip_set_create(struct sock *ctnl, struct sk_buff *skb,
if (!list)
goto cleanup;
/* nfnl mutex is held, both lists are valid */
tmp = nfnl_dereference(inst->ip_set_list);
tmp = ip_set_dereference(inst->ip_set_list);
memcpy(list, tmp, sizeof(struct ip_set *) * inst->ip_set_max);
rcu_assign_pointer(inst->ip_set_list, list);
/* Make sure all current packets have passed through */
Expand All @@ -900,7 +900,7 @@ ip_set_create(struct sock *ctnl, struct sk_buff *skb,
* Finally! Add our shiny new set to the list, and be done.
*/
pr_debug("create: '%s' created with index %u!\n", set->name, index);
nfnl_set(inst, index) = set;
ip_set(inst, index) = set;

return ret;

Expand All @@ -925,10 +925,10 @@ ip_set_setname_policy[IPSET_ATTR_CMD_MAX + 1] = {
static void
ip_set_destroy_set(struct ip_set_net *inst, ip_set_id_t index)
{
struct ip_set *set = nfnl_set(inst, index);
struct ip_set *set = ip_set(inst, index);

pr_debug("set: %s\n", set->name);
nfnl_set(inst, index) = NULL;
ip_set(inst, index) = NULL;

/* Must call it without holding any lock */
set->variant->destroy(set);
Expand Down Expand Up @@ -962,15 +962,15 @@ ip_set_destroy(struct sock *ctnl, struct sk_buff *skb,
read_lock_bh(&ip_set_ref_lock);
if (!attr[IPSET_ATTR_SETNAME]) {
for (i = 0; i < inst->ip_set_max; i++) {
s = nfnl_set(inst, i);
s = ip_set(inst, i);
if (s != NULL && s->ref) {
ret = -IPSET_ERR_BUSY;
goto out;
}
}
read_unlock_bh(&ip_set_ref_lock);
for (i = 0; i < inst->ip_set_max; i++) {
s = nfnl_set(inst, i);
s = ip_set(inst, i);
if (s != NULL)
ip_set_destroy_set(inst, i);
}
Expand Down Expand Up @@ -1020,7 +1020,7 @@ ip_set_flush(struct sock *ctnl, struct sk_buff *skb,

if (!attr[IPSET_ATTR_SETNAME]) {
for (i = 0; i < inst->ip_set_max; i++) {
s = nfnl_set(inst, i);
s = ip_set(inst, i);
if (s != NULL)
ip_set_flush_set(s);
}
Expand Down Expand Up @@ -1074,7 +1074,7 @@ ip_set_rename(struct sock *ctnl, struct sk_buff *skb,

name2 = nla_data(attr[IPSET_ATTR_SETNAME2]);
for (i = 0; i < inst->ip_set_max; i++) {
s = nfnl_set(inst, i);
s = ip_set(inst, i);
if (s != NULL && STREQ(s->name, name2)) {
ret = -IPSET_ERR_EXIST_SETNAME2;
goto out;
Expand Down Expand Up @@ -1134,8 +1134,8 @@ ip_set_swap(struct sock *ctnl, struct sk_buff *skb,

write_lock_bh(&ip_set_ref_lock);
swap(from->ref, to->ref);
nfnl_set(inst, from_id) = to;
nfnl_set(inst, to_id) = from;
ip_set(inst, from_id) = to;
ip_set(inst, to_id) = from;
write_unlock_bh(&ip_set_ref_lock);

return 0;
Expand All @@ -1157,7 +1157,7 @@ ip_set_dump_done(struct netlink_callback *cb)
struct ip_set_net *inst = (struct ip_set_net *)cb->args[IPSET_CB_NET];
if (cb->args[IPSET_CB_ARG0]) {
pr_debug("release set %s\n",
nfnl_set(inst, cb->args[IPSET_CB_INDEX])->name);
ip_set(inst, cb->args[IPSET_CB_INDEX])->name);
__ip_set_put_byindex(inst,
(ip_set_id_t) cb->args[IPSET_CB_INDEX]);
}
Expand Down Expand Up @@ -1254,7 +1254,7 @@ ip_set_dump_start(struct sk_buff *skb, struct netlink_callback *cb)
dump_type, dump_flags, cb->args[IPSET_CB_INDEX]);
for (; cb->args[IPSET_CB_INDEX] < max; cb->args[IPSET_CB_INDEX]++) {
index = (ip_set_id_t) cb->args[IPSET_CB_INDEX];
set = nfnl_set(inst, index);
set = ip_set(inst, index);
if (set == NULL) {
if (dump_type == DUMP_ONE) {
ret = -ENOENT;
Expand Down Expand Up @@ -1332,7 +1332,7 @@ ip_set_dump_start(struct sk_buff *skb, struct netlink_callback *cb)
release_refcount:
/* If there was an error or set is done, release set */
if (ret || !cb->args[IPSET_CB_ARG0]) {
pr_debug("release set %s\n", nfnl_set(inst, index)->name);
pr_debug("release set %s\n", ip_set(inst, index)->name);
__ip_set_put_byindex(inst, index);
cb->args[IPSET_CB_ARG0] = 0;
}
Expand Down Expand Up @@ -1887,7 +1887,7 @@ ip_set_sockfn_get(struct sock *sk, int optval, void __user *user, int *len)
find_set_and_id(inst, req_get->set.name, &id);
req_get->set.index = id;
if (id != IPSET_INVALID_ID)
req_get->family = nfnl_set(inst, id)->family;
req_get->family = ip_set(inst, id)->family;
nfnl_unlock(NFNL_SUBSYS_IPSET);
goto copy;
}
Expand All @@ -1901,7 +1901,7 @@ ip_set_sockfn_get(struct sock *sk, int optval, void __user *user, int *len)
goto done;
}
nfnl_lock(NFNL_SUBSYS_IPSET);
set = nfnl_set(inst, req_get->set.index);
set = ip_set(inst, req_get->set.index);
strncpy(req_get->set.name, set ? set->name : "",
IPSET_MAXNAMELEN);
nfnl_unlock(NFNL_SUBSYS_IPSET);
Expand Down Expand Up @@ -1960,7 +1960,7 @@ ip_set_net_exit(struct net *net)
inst->is_deleted = 1; /* flag for ip_set_nfnl_put */

for (i = 0; i < inst->ip_set_max; i++) {
set = nfnl_set(inst, i);
set = ip_set(inst, i);
if (set != NULL)
ip_set_destroy_set(inst, i);
}
Expand Down

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