[XFRM]: Convert xfrm_state hash linkage to hlists.
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
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edcd582152
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8f126e37c0
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@ -94,9 +94,9 @@ extern struct mutex xfrm_cfg_mutex;
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struct xfrm_state
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{
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/* Note: bydst is re-used during gc */
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struct list_head bydst;
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struct list_head bysrc;
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struct list_head byspi;
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struct hlist_node bydst;
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struct hlist_node bysrc;
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struct hlist_node byspi;
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atomic_t refcnt;
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spinlock_t lock;
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@ -46,9 +46,9 @@ static DEFINE_SPINLOCK(xfrm_state_lock);
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* Main use is finding SA after policy selected tunnel or transport mode.
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* Also, it can be used by ah/esp icmp error handler to find offending SA.
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*/
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static struct list_head xfrm_state_bydst[XFRM_DST_HSIZE];
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static struct list_head xfrm_state_bysrc[XFRM_DST_HSIZE];
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static struct list_head xfrm_state_byspi[XFRM_DST_HSIZE];
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static struct hlist_head xfrm_state_bydst[XFRM_DST_HSIZE];
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static struct hlist_head xfrm_state_bysrc[XFRM_DST_HSIZE];
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static struct hlist_head xfrm_state_byspi[XFRM_DST_HSIZE];
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static __inline__
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unsigned __xfrm4_dst_hash(xfrm_address_t *addr)
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@ -141,7 +141,7 @@ static DEFINE_RWLOCK(xfrm_state_afinfo_lock);
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static struct xfrm_state_afinfo *xfrm_state_afinfo[NPROTO];
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static struct work_struct xfrm_state_gc_work;
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static struct list_head xfrm_state_gc_list = LIST_HEAD_INIT(xfrm_state_gc_list);
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static HLIST_HEAD(xfrm_state_gc_list);
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static DEFINE_SPINLOCK(xfrm_state_gc_lock);
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static int xfrm_state_gc_flush_bundles;
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@ -178,8 +178,8 @@ static void xfrm_state_gc_destroy(struct xfrm_state *x)
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static void xfrm_state_gc_task(void *data)
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{
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struct xfrm_state *x;
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struct list_head *entry, *tmp;
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struct list_head gc_list = LIST_HEAD_INIT(gc_list);
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struct hlist_node *entry, *tmp;
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struct hlist_head gc_list;
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if (xfrm_state_gc_flush_bundles) {
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xfrm_state_gc_flush_bundles = 0;
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@ -187,13 +187,13 @@ static void xfrm_state_gc_task(void *data)
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}
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spin_lock_bh(&xfrm_state_gc_lock);
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list_splice_init(&xfrm_state_gc_list, &gc_list);
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gc_list.first = xfrm_state_gc_list.first;
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INIT_HLIST_HEAD(&xfrm_state_gc_list);
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spin_unlock_bh(&xfrm_state_gc_lock);
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list_for_each_safe(entry, tmp, &gc_list) {
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x = list_entry(entry, struct xfrm_state, bydst);
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hlist_for_each_entry_safe(x, entry, tmp, &gc_list, bydst)
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xfrm_state_gc_destroy(x);
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}
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wake_up(&km_waitq);
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}
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@ -287,9 +287,9 @@ struct xfrm_state *xfrm_state_alloc(void)
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if (x) {
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atomic_set(&x->refcnt, 1);
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atomic_set(&x->tunnel_users, 0);
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INIT_LIST_HEAD(&x->bydst);
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INIT_LIST_HEAD(&x->bysrc);
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INIT_LIST_HEAD(&x->byspi);
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INIT_HLIST_NODE(&x->bydst);
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INIT_HLIST_NODE(&x->bysrc);
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INIT_HLIST_NODE(&x->byspi);
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init_timer(&x->timer);
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x->timer.function = xfrm_timer_handler;
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x->timer.data = (unsigned long)x;
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@ -314,7 +314,7 @@ void __xfrm_state_destroy(struct xfrm_state *x)
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BUG_TRAP(x->km.state == XFRM_STATE_DEAD);
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spin_lock_bh(&xfrm_state_gc_lock);
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list_add(&x->bydst, &xfrm_state_gc_list);
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hlist_add_head(&x->bydst, &xfrm_state_gc_list);
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spin_unlock_bh(&xfrm_state_gc_lock);
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schedule_work(&xfrm_state_gc_work);
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}
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@ -327,12 +327,12 @@ int __xfrm_state_delete(struct xfrm_state *x)
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if (x->km.state != XFRM_STATE_DEAD) {
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x->km.state = XFRM_STATE_DEAD;
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spin_lock(&xfrm_state_lock);
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list_del(&x->bydst);
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hlist_del(&x->bydst);
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__xfrm_state_put(x);
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list_del(&x->bysrc);
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hlist_del(&x->bysrc);
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__xfrm_state_put(x);
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if (x->id.spi) {
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list_del(&x->byspi);
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hlist_del(&x->byspi);
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__xfrm_state_put(x);
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}
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spin_unlock(&xfrm_state_lock);
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@ -378,12 +378,13 @@ EXPORT_SYMBOL(xfrm_state_delete);
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void xfrm_state_flush(u8 proto)
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{
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int i;
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struct xfrm_state *x;
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spin_lock_bh(&xfrm_state_lock);
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for (i = 0; i < XFRM_DST_HSIZE; i++) {
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struct hlist_node *entry;
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struct xfrm_state *x;
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restart:
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list_for_each_entry(x, xfrm_state_bydst+i, bydst) {
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hlist_for_each_entry(x, entry, xfrm_state_bydst+i, bydst) {
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if (!xfrm_state_kern(x) &&
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xfrm_id_proto_match(x->id.proto, proto)) {
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xfrm_state_hold(x);
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@ -420,8 +421,9 @@ static struct xfrm_state *__xfrm_state_lookup(xfrm_address_t *daddr, u32 spi, u8
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{
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unsigned int h = xfrm_spi_hash(daddr, spi, proto, family);
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struct xfrm_state *x;
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struct hlist_node *entry;
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list_for_each_entry(x, xfrm_state_byspi+h, byspi) {
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hlist_for_each_entry(x, entry, xfrm_state_byspi+h, byspi) {
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if (x->props.family != family ||
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x->id.spi != spi ||
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x->id.proto != proto)
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@ -451,8 +453,9 @@ static struct xfrm_state *__xfrm_state_lookup_byaddr(xfrm_address_t *daddr, xfrm
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{
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unsigned int h = xfrm_src_hash(saddr, family);
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struct xfrm_state *x;
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struct hlist_node *entry;
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list_for_each_entry(x, xfrm_state_bysrc+h, bysrc) {
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hlist_for_each_entry(x, entry, xfrm_state_bysrc+h, bysrc) {
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if (x->props.family != family ||
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x->id.proto != proto)
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continue;
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@ -499,14 +502,15 @@ xfrm_state_find(xfrm_address_t *daddr, xfrm_address_t *saddr,
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struct xfrm_policy *pol, int *err,
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unsigned short family)
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{
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unsigned h = xfrm_dst_hash(daddr, family);
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unsigned int h = xfrm_dst_hash(daddr, family);
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struct hlist_node *entry;
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struct xfrm_state *x, *x0;
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int acquire_in_progress = 0;
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int error = 0;
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struct xfrm_state *best = NULL;
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spin_lock_bh(&xfrm_state_lock);
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list_for_each_entry(x, xfrm_state_bydst+h, bydst) {
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hlist_for_each_entry(x, entry, xfrm_state_bydst+h, bydst) {
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if (x->props.family == family &&
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x->props.reqid == tmpl->reqid &&
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!(x->props.flags & XFRM_STATE_WILDRECV) &&
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@ -575,13 +579,14 @@ xfrm_state_find(xfrm_address_t *daddr, xfrm_address_t *saddr,
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if (km_query(x, tmpl, pol) == 0) {
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x->km.state = XFRM_STATE_ACQ;
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list_add_tail(&x->bydst, xfrm_state_bydst+h);
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hlist_add_head(&x->bydst, xfrm_state_bydst+h);
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xfrm_state_hold(x);
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list_add_tail(&x->bysrc, xfrm_state_bysrc+h);
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h = xfrm_src_hash(saddr, family);
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hlist_add_head(&x->bysrc, xfrm_state_bysrc+h);
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xfrm_state_hold(x);
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if (x->id.spi) {
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h = xfrm_spi_hash(&x->id.daddr, x->id.spi, x->id.proto, family);
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list_add(&x->byspi, xfrm_state_byspi+h);
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hlist_add_head(&x->byspi, xfrm_state_byspi+h);
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xfrm_state_hold(x);
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}
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x->lft.hard_add_expires_seconds = XFRM_ACQ_EXPIRES;
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@ -608,19 +613,19 @@ static void __xfrm_state_insert(struct xfrm_state *x)
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{
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unsigned h = xfrm_dst_hash(&x->id.daddr, x->props.family);
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list_add(&x->bydst, xfrm_state_bydst+h);
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hlist_add_head(&x->bydst, xfrm_state_bydst+h);
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xfrm_state_hold(x);
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h = xfrm_src_hash(&x->props.saddr, x->props.family);
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list_add(&x->bysrc, xfrm_state_bysrc+h);
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hlist_add_head(&x->bysrc, xfrm_state_bysrc+h);
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xfrm_state_hold(x);
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if (xfrm_id_proto_match(x->id.proto, IPSEC_PROTO_ANY)) {
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h = xfrm_spi_hash(&x->id.daddr, x->id.spi, x->id.proto,
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x->props.family);
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list_add(&x->byspi, xfrm_state_byspi+h);
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hlist_add_head(&x->byspi, xfrm_state_byspi+h);
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xfrm_state_hold(x);
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}
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@ -648,9 +653,10 @@ EXPORT_SYMBOL(xfrm_state_insert);
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static struct xfrm_state *__find_acq_core(unsigned short family, u8 mode, u32 reqid, u8 proto, xfrm_address_t *daddr, xfrm_address_t *saddr, int create)
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{
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unsigned int h = xfrm_dst_hash(daddr, family);
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struct hlist_node *entry;
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struct xfrm_state *x;
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list_for_each_entry(x, xfrm_state_bydst+h, bydst) {
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hlist_for_each_entry(x, entry, xfrm_state_bydst+h, bydst) {
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if (x->props.reqid != reqid ||
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x->props.mode != mode ||
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x->props.family != family ||
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@ -717,10 +723,10 @@ static struct xfrm_state *__find_acq_core(unsigned short family, u8 mode, u32 re
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x->timer.expires = jiffies + XFRM_ACQ_EXPIRES*HZ;
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add_timer(&x->timer);
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xfrm_state_hold(x);
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list_add_tail(&x->bydst, xfrm_state_bydst+h);
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hlist_add_head(&x->bydst, xfrm_state_bydst+h);
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h = xfrm_src_hash(saddr, family);
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xfrm_state_hold(x);
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list_add_tail(&x->bysrc, xfrm_state_bysrc+h);
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hlist_add_head(&x->bysrc, xfrm_state_bysrc+h);
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wake_up(&km_waitq);
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}
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@ -977,11 +983,14 @@ EXPORT_SYMBOL(xfrm_state_sort);
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static struct xfrm_state *__xfrm_find_acq_byseq(u32 seq)
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{
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int i;
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struct xfrm_state *x;
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for (i = 0; i < XFRM_DST_HSIZE; i++) {
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list_for_each_entry(x, xfrm_state_bydst+i, bydst) {
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if (x->km.seq == seq && x->km.state == XFRM_STATE_ACQ) {
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struct hlist_node *entry;
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struct xfrm_state *x;
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hlist_for_each_entry(x, entry, xfrm_state_bydst+i, bydst) {
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if (x->km.seq == seq &&
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x->km.state == XFRM_STATE_ACQ) {
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xfrm_state_hold(x);
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return x;
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}
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@ -1047,7 +1056,7 @@ xfrm_alloc_spi(struct xfrm_state *x, u32 minspi, u32 maxspi)
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if (x->id.spi) {
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spin_lock_bh(&xfrm_state_lock);
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h = xfrm_spi_hash(&x->id.daddr, x->id.spi, x->id.proto, x->props.family);
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list_add(&x->byspi, xfrm_state_byspi+h);
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hlist_add_head(&x->byspi, xfrm_state_byspi+h);
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xfrm_state_hold(x);
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spin_unlock_bh(&xfrm_state_lock);
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wake_up(&km_waitq);
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@ -1060,12 +1069,13 @@ int xfrm_state_walk(u8 proto, int (*func)(struct xfrm_state *, int, void*),
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{
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int i;
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struct xfrm_state *x;
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struct hlist_node *entry;
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int count = 0;
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int err = 0;
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spin_lock_bh(&xfrm_state_lock);
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for (i = 0; i < XFRM_DST_HSIZE; i++) {
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list_for_each_entry(x, xfrm_state_bydst+i, bydst) {
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hlist_for_each_entry(x, entry, xfrm_state_bydst+i, bydst) {
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if (xfrm_id_proto_match(x->id.proto, proto))
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count++;
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}
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@ -1076,7 +1086,7 @@ int xfrm_state_walk(u8 proto, int (*func)(struct xfrm_state *, int, void*),
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}
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for (i = 0; i < XFRM_DST_HSIZE; i++) {
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list_for_each_entry(x, xfrm_state_bydst+i, bydst) {
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hlist_for_each_entry(x, entry, xfrm_state_bydst+i, bydst) {
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if (!xfrm_id_proto_match(x->id.proto, proto))
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continue;
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err = func(x, --count, data);
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@ -1524,9 +1534,9 @@ void __init xfrm_state_init(void)
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int i;
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for (i=0; i<XFRM_DST_HSIZE; i++) {
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INIT_LIST_HEAD(&xfrm_state_bydst[i]);
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INIT_LIST_HEAD(&xfrm_state_bysrc[i]);
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INIT_LIST_HEAD(&xfrm_state_byspi[i]);
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INIT_HLIST_HEAD(&xfrm_state_bydst[i]);
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INIT_HLIST_HEAD(&xfrm_state_bysrc[i]);
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INIT_HLIST_HEAD(&xfrm_state_byspi[i]);
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}
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INIT_WORK(&xfrm_state_gc_work, xfrm_state_gc_task, NULL);
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}
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