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netfilter: ipset: Convert timers to use timer_setup()

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In preparation for unconditionally passing the struct timer_list pointer to
all timer callbacks, switch to using the new timer_setup() and from_timer()
to pass the timer pointer explicitly. This introduces a pointer back to the
struct ip_set, which is used instead of the struct timer_list .data field.

Cc: Pablo Neira Ayuso <pablo@netfilter.org>
Cc: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
Cc: Florian Westphal <fw@strlen.de>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Stephen Hemminger <stephen@networkplumber.org>
Cc: simran singhal <singhalsimran0@gmail.com>
Cc: Muhammad Falak R Wani <falakreyaz@gmail.com>
Cc: netfilter-devel@vger.kernel.org
Cc: coreteam@netfilter.org
Cc: netdev@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Kees Cook 2017-10-16 17:29:18 -07:00 committed by David S. Miller
parent cdeabbb881
commit a92c5751b9
6 changed files with 25 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
net/netfilter/ipset/ip_set_bitmap_gen.h
View File

@ -37,11 +37,11 @@
#define get_ext(set, map, id) ((map)->extensions + ((set)->dsize * (id)))
static void
mtype_gc_init(struct ip_set *set, void (*gc)(unsigned long ul_set))
mtype_gc_init(struct ip_set *set, void (*gc)(struct timer_list *t))
{
struct mtype *map = set->data;
setup_timer(&map->gc, gc, (unsigned long)set);
timer_setup(&map->gc, gc, 0);
mod_timer(&map->gc, jiffies + IPSET_GC_PERIOD(set->timeout) * HZ);
}
@ -272,10 +272,10 @@ out:
}
static void
mtype_gc(unsigned long ul_set)
mtype_gc(struct timer_list *t)
{
struct ip_set *set = (struct ip_set *)ul_set;
struct mtype *map = set->data;
struct mtype *map = from_timer(map, t, gc);
struct ip_set *set = map->set;
void *x;
u32 id;

2
net/netfilter/ipset/ip_set_bitmap_ip.c
View File

@ -48,6 +48,7 @@ struct bitmap_ip {
size_t memsize; /* members size */
u8 netmask; /* subnet netmask */
struct timer_list gc; /* garbage collection */
struct ip_set *set; /* attached to this ip_set */
unsigned char extensions[0] /* data extensions */
__aligned(__alignof__(u64));
};
@ -232,6 +233,7 @@ init_map_ip(struct ip_set *set, struct bitmap_ip *map,
map->netmask = netmask;
set->timeout = IPSET_NO_TIMEOUT;
map->set = set;
set->data = map;
set->family = NFPROTO_IPV4;

2
net/netfilter/ipset/ip_set_bitmap_ipmac.c
View File

@ -52,6 +52,7 @@ struct bitmap_ipmac {
u32 elements; /* number of max elements in the set */
size_t memsize; /* members size */
struct timer_list gc; /* garbage collector */
struct ip_set *set; /* attached to this ip_set */
unsigned char extensions[0] /* MAC + data extensions */
__aligned(__alignof__(u64));
};
@ -307,6 +308,7 @@ init_map_ipmac(struct ip_set *set, struct bitmap_ipmac *map,
map->elements = elements;
set->timeout = IPSET_NO_TIMEOUT;
map->set = set;
set->data = map;
set->family = NFPROTO_IPV4;

2
net/netfilter/ipset/ip_set_bitmap_port.c
View File

@ -40,6 +40,7 @@ struct bitmap_port {
u32 elements; /* number of max elements in the set */
size_t memsize; /* members size */
struct timer_list gc; /* garbage collection */
struct ip_set *set; /* attached to this ip_set */
unsigned char extensions[0] /* data extensions */
__aligned(__alignof__(u64));
};
@ -214,6 +215,7 @@ init_map_port(struct ip_set *set, struct bitmap_port *map,
map->last_port = last_port;
set->timeout = IPSET_NO_TIMEOUT;
map->set = set;
set->data = map;
set->family = NFPROTO_UNSPEC;

12
net/netfilter/ipset/ip_set_hash_gen.h
View File

@ -280,6 +280,7 @@ htable_bits(u32 hashsize)
struct htype {
struct htable __rcu *table; /* the hash table */
struct timer_list gc; /* garbage collection when timeout enabled */
struct ip_set *set; /* attached to this ip_set */
u32 maxelem; /* max elements in the hash */
u32 initval; /* random jhash init value */
#ifdef IP_SET_HASH_WITH_MARKMASK
@ -429,11 +430,11 @@ mtype_destroy(struct ip_set *set)
}
static void
mtype_gc_init(struct ip_set *set, void (*gc)(unsigned long ul_set))
mtype_gc_init(struct ip_set *set, void (*gc)(struct timer_list *t))
{
struct htype *h = set->data;
setup_timer(&h->gc, gc, (unsigned long)set);
timer_setup(&h->gc, gc, 0);
mod_timer(&h->gc, jiffies + IPSET_GC_PERIOD(set->timeout) * HZ);
pr_debug("gc initialized, run in every %u\n",
IPSET_GC_PERIOD(set->timeout));
@ -526,10 +527,10 @@ mtype_expire(struct ip_set *set, struct htype *h)
}
static void
mtype_gc(unsigned long ul_set)
mtype_gc(struct timer_list *t)
{
struct ip_set *set = (struct ip_set *)ul_set;
struct htype *h = set->data;
struct htype *h = from_timer(h, t, gc);
struct ip_set *set = h->set;
pr_debug("called\n");
spin_lock_bh(&set->lock);
@ -1314,6 +1315,7 @@ IPSET_TOKEN(HTYPE, _create)(struct net *net, struct ip_set *set,
t->htable_bits = hbits;
RCU_INIT_POINTER(h->table, t);
h->set = set;
set->data = h;
#ifndef IP_SET_PROTO_UNDEF
if (set->family == NFPROTO_IPV4) {

12
net/netfilter/ipset/ip_set_list_set.c
View File

@ -44,6 +44,7 @@ struct set_adt_elem {
struct list_set {
u32 size; /* size of set list array */
struct timer_list gc; /* garbage collection */
struct ip_set *set; /* attached to this ip_set */
struct net *net; /* namespace */
struct list_head members; /* the set members */
};
@ -571,10 +572,10 @@ static const struct ip_set_type_variant set_variant = {
};
static void
list_set_gc(unsigned long ul_set)
list_set_gc(struct timer_list *t)
{
struct ip_set *set = (struct ip_set *)ul_set;
struct list_set *map = set->data;
struct list_set *map = from_timer(map, t, gc);
struct ip_set *set = map->set;
spin_lock_bh(&set->lock);
set_cleanup_entries(set);
@ -585,11 +586,11 @@ list_set_gc(unsigned long ul_set)
}
static void
list_set_gc_init(struct ip_set *set, void (*gc)(unsigned long ul_set))
list_set_gc_init(struct ip_set *set, void (*gc)(struct timer_list *t))
{
struct list_set *map = set->data;
setup_timer(&map->gc, gc, (unsigned long)set);
timer_setup(&map->gc, gc, 0);
mod_timer(&map->gc, jiffies + IPSET_GC_PERIOD(set->timeout) * HZ);
}
@ -606,6 +607,7 @@ init_list_set(struct net *net, struct ip_set *set, u32 size)
map->size = size;
map->net = net;
map->set = set;
INIT_LIST_HEAD(&map->members);
set->data = map;