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path: root/net/xfrm/xfrm_policy.c
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Diffstat (limited to 'net/xfrm/xfrm_policy.c')
-rw-r--r--net/xfrm/xfrm_policy.c651
1 files changed, 437 insertions, 214 deletions
diff --git a/net/xfrm/xfrm_policy.c b/net/xfrm/xfrm_policy.c
index 41eabc46f11..0525d78ba32 100644
--- a/net/xfrm/xfrm_policy.c
+++ b/net/xfrm/xfrm_policy.c
@@ -35,12 +35,9 @@
#include "xfrm_hash.h"
-DEFINE_MUTEX(xfrm_cfg_mutex);
-EXPORT_SYMBOL(xfrm_cfg_mutex);
-
-static DEFINE_SPINLOCK(xfrm_policy_sk_bundle_lock);
-static struct dst_entry *xfrm_policy_sk_bundles;
-static DEFINE_RWLOCK(xfrm_policy_lock);
+#define XFRM_QUEUE_TMO_MIN ((unsigned)(HZ/10))
+#define XFRM_QUEUE_TMO_MAX ((unsigned)(60*HZ))
+#define XFRM_MAX_QUEUE_LEN 100
static DEFINE_SPINLOCK(xfrm_policy_afinfo_lock);
static struct xfrm_policy_afinfo __rcu *xfrm_policy_afinfo[NPROTO]
@@ -51,7 +48,7 @@ static struct kmem_cache *xfrm_dst_cache __read_mostly;
static void xfrm_init_pmtu(struct dst_entry *dst);
static int stale_bundle(struct dst_entry *dst);
static int xfrm_bundle_ok(struct xfrm_dst *xdst);
-
+static void xfrm_policy_queue_process(unsigned long arg);
static struct xfrm_policy *__xfrm_policy_unlink(struct xfrm_policy *pol,
int dir);
@@ -172,7 +169,7 @@ static inline unsigned long make_jiffies(long secs)
static void xfrm_policy_timer(unsigned long data)
{
- struct xfrm_policy *xp = (struct xfrm_policy*)data;
+ struct xfrm_policy *xp = (struct xfrm_policy *)data;
unsigned long now = get_seconds();
long next = LONG_MAX;
int warn = 0;
@@ -287,8 +284,11 @@ struct xfrm_policy *xfrm_policy_alloc(struct net *net, gfp_t gfp)
INIT_HLIST_NODE(&policy->byidx);
rwlock_init(&policy->lock);
atomic_set(&policy->refcnt, 1);
+ skb_queue_head_init(&policy->polq.hold_queue);
setup_timer(&policy->timer, xfrm_policy_timer,
(unsigned long)policy);
+ setup_timer(&policy->polq.hold_timer, xfrm_policy_queue_process,
+ (unsigned long)policy);
policy->flo.ops = &xfrm_policy_fc_ops;
}
return policy;
@@ -301,7 +301,7 @@ void xfrm_policy_destroy(struct xfrm_policy *policy)
{
BUG_ON(!policy->walk.dead);
- if (del_timer(&policy->timer))
+ if (del_timer(&policy->timer) || del_timer(&policy->polq.hold_timer))
BUG();
security_xfrm_policy_free(policy->security);
@@ -309,6 +309,14 @@ void xfrm_policy_destroy(struct xfrm_policy *policy)
}
EXPORT_SYMBOL(xfrm_policy_destroy);
+static void xfrm_queue_purge(struct sk_buff_head *list)
+{
+ struct sk_buff *skb;
+
+ while ((skb = skb_dequeue(list)) != NULL)
+ kfree_skb(skb);
+}
+
/* Rule must be locked. Release descentant resources, announce
* entry dead. The rule must be unlinked from lists to the moment.
*/
@@ -319,6 +327,10 @@ static void xfrm_policy_kill(struct xfrm_policy *policy)
atomic_inc(&policy->genid);
+ if (del_timer(&policy->polq.hold_timer))
+ xfrm_pol_put(policy);
+ xfrm_queue_purge(&policy->polq.hold_queue);
+
if (del_timer(&policy->timer))
xfrm_pol_put(policy);
@@ -359,27 +371,27 @@ static void xfrm_dst_hash_transfer(struct hlist_head *list,
struct hlist_head *ndsttable,
unsigned int nhashmask)
{
- struct hlist_node *entry, *tmp, *entry0 = NULL;
+ struct hlist_node *tmp, *entry0 = NULL;
struct xfrm_policy *pol;
unsigned int h0 = 0;
redo:
- hlist_for_each_entry_safe(pol, entry, tmp, list, bydst) {
+ hlist_for_each_entry_safe(pol, tmp, list, bydst) {
unsigned int h;
h = __addr_hash(&pol->selector.daddr, &pol->selector.saddr,
pol->family, nhashmask);
if (!entry0) {
- hlist_del(entry);
+ hlist_del(&pol->bydst);
hlist_add_head(&pol->bydst, ndsttable+h);
h0 = h;
} else {
if (h != h0)
continue;
- hlist_del(entry);
+ hlist_del(&pol->bydst);
hlist_add_after(entry0, &pol->bydst);
}
- entry0 = entry;
+ entry0 = &pol->bydst;
}
if (!hlist_empty(list)) {
entry0 = NULL;
@@ -391,10 +403,10 @@ static void xfrm_idx_hash_transfer(struct hlist_head *list,
struct hlist_head *nidxtable,
unsigned int nhashmask)
{
- struct hlist_node *entry, *tmp;
+ struct hlist_node *tmp;
struct xfrm_policy *pol;
- hlist_for_each_entry_safe(pol, entry, tmp, list, byidx) {
+ hlist_for_each_entry_safe(pol, tmp, list, byidx) {
unsigned int h;
h = __idx_hash(pol->index, nhashmask);
@@ -419,7 +431,7 @@ static void xfrm_bydst_resize(struct net *net, int dir)
if (!ndst)
return;
- write_lock_bh(&xfrm_policy_lock);
+ write_lock_bh(&net->xfrm.xfrm_policy_lock);
for (i = hmask; i >= 0; i--)
xfrm_dst_hash_transfer(odst + i, ndst, nhashmask);
@@ -427,7 +439,7 @@ static void xfrm_bydst_resize(struct net *net, int dir)
net->xfrm.policy_bydst[dir].table = ndst;
net->xfrm.policy_bydst[dir].hmask = nhashmask;
- write_unlock_bh(&xfrm_policy_lock);
+ write_unlock_bh(&net->xfrm.xfrm_policy_lock);
xfrm_hash_free(odst, (hmask + 1) * sizeof(struct hlist_head));
}
@@ -444,7 +456,7 @@ static void xfrm_byidx_resize(struct net *net, int total)
if (!nidx)
return;
- write_lock_bh(&xfrm_policy_lock);
+ write_lock_bh(&net->xfrm.xfrm_policy_lock);
for (i = hmask; i >= 0; i--)
xfrm_idx_hash_transfer(oidx + i, nidx, nhashmask);
@@ -452,7 +464,7 @@ static void xfrm_byidx_resize(struct net *net, int total)
net->xfrm.policy_byidx = nidx;
net->xfrm.policy_idx_hmask = nhashmask;
- write_unlock_bh(&xfrm_policy_lock);
+ write_unlock_bh(&net->xfrm.xfrm_policy_lock);
xfrm_hash_free(oidx, (hmask + 1) * sizeof(struct hlist_head));
}
@@ -485,7 +497,7 @@ static inline int xfrm_byidx_should_resize(struct net *net, int total)
void xfrm_spd_getinfo(struct net *net, struct xfrmk_spdinfo *si)
{
- read_lock_bh(&xfrm_policy_lock);
+ read_lock_bh(&net->xfrm.xfrm_policy_lock);
si->incnt = net->xfrm.policy_count[XFRM_POLICY_IN];
si->outcnt = net->xfrm.policy_count[XFRM_POLICY_OUT];
si->fwdcnt = net->xfrm.policy_count[XFRM_POLICY_FWD];
@@ -494,7 +506,7 @@ void xfrm_spd_getinfo(struct net *net, struct xfrmk_spdinfo *si)
si->fwdscnt = net->xfrm.policy_count[XFRM_POLICY_FWD+XFRM_POLICY_MAX];
si->spdhcnt = net->xfrm.policy_idx_hmask;
si->spdhmcnt = xfrm_policy_hashmax;
- read_unlock_bh(&xfrm_policy_lock);
+ read_unlock_bh(&net->xfrm.xfrm_policy_lock);
}
EXPORT_SYMBOL(xfrm_spd_getinfo);
@@ -519,24 +531,29 @@ static void xfrm_hash_resize(struct work_struct *work)
/* Generate new index... KAME seems to generate them ordered by cost
* of an absolute inpredictability of ordering of rules. This will not pass. */
-static u32 xfrm_gen_index(struct net *net, int dir)
+static u32 xfrm_gen_index(struct net *net, int dir, u32 index)
{
static u32 idx_generator;
for (;;) {
- struct hlist_node *entry;
struct hlist_head *list;
struct xfrm_policy *p;
u32 idx;
int found;
- idx = (idx_generator | dir);
- idx_generator += 8;
+ if (!index) {
+ idx = (idx_generator | dir);
+ idx_generator += 8;
+ } else {
+ idx = index;
+ index = 0;
+ }
+
if (idx == 0)
idx = 8;
list = net->xfrm.policy_byidx + idx_hash(net, idx);
found = 0;
- hlist_for_each_entry(p, entry, list, byidx) {
+ hlist_for_each_entry(p, list, byidx) {
if (p->index == idx) {
found = 1;
break;
@@ -562,27 +579,68 @@ static inline int selector_cmp(struct xfrm_selector *s1, struct xfrm_selector *s
return 0;
}
+static void xfrm_policy_requeue(struct xfrm_policy *old,
+ struct xfrm_policy *new)
+{
+ struct xfrm_policy_queue *pq = &old->polq;
+ struct sk_buff_head list;
+
+ __skb_queue_head_init(&list);
+
+ spin_lock_bh(&pq->hold_queue.lock);
+ skb_queue_splice_init(&pq->hold_queue, &list);
+ if (del_timer(&pq->hold_timer))
+ xfrm_pol_put(old);
+ spin_unlock_bh(&pq->hold_queue.lock);
+
+ if (skb_queue_empty(&list))
+ return;
+
+ pq = &new->polq;
+
+ spin_lock_bh(&pq->hold_queue.lock);
+ skb_queue_splice(&list, &pq->hold_queue);
+ pq->timeout = XFRM_QUEUE_TMO_MIN;
+ if (!mod_timer(&pq->hold_timer, jiffies))
+ xfrm_pol_hold(new);
+ spin_unlock_bh(&pq->hold_queue.lock);
+}
+
+static bool xfrm_policy_mark_match(struct xfrm_policy *policy,
+ struct xfrm_policy *pol)
+{
+ u32 mark = policy->mark.v & policy->mark.m;
+
+ if (policy->mark.v == pol->mark.v && policy->mark.m == pol->mark.m)
+ return true;
+
+ if ((mark & pol->mark.m) == pol->mark.v &&
+ policy->priority == pol->priority)
+ return true;
+
+ return false;
+}
+
int xfrm_policy_insert(int dir, struct xfrm_policy *policy, int excl)
{
struct net *net = xp_net(policy);
struct xfrm_policy *pol;
struct xfrm_policy *delpol;
struct hlist_head *chain;
- struct hlist_node *entry, *newpos;
- u32 mark = policy->mark.v & policy->mark.m;
+ struct hlist_node *newpos;
- write_lock_bh(&xfrm_policy_lock);
+ write_lock_bh(&net->xfrm.xfrm_policy_lock);
chain = policy_hash_bysel(net, &policy->selector, policy->family, dir);
delpol = NULL;
newpos = NULL;
- hlist_for_each_entry(pol, entry, chain, bydst) {
+ hlist_for_each_entry(pol, chain, bydst) {
if (pol->type == policy->type &&
!selector_cmp(&pol->selector, &policy->selector) &&
- (mark & pol->mark.m) == pol->mark.v &&
+ xfrm_policy_mark_match(policy, pol) &&
xfrm_sec_ctx_match(pol->security, policy->security) &&
!WARN_ON(delpol)) {
if (excl) {
- write_unlock_bh(&xfrm_policy_lock);
+ write_unlock_bh(&net->xfrm.xfrm_policy_lock);
return -EEXIST;
}
delpol = pol;
@@ -601,18 +659,26 @@ int xfrm_policy_insert(int dir, struct xfrm_policy *policy, int excl)
hlist_add_head(&policy->bydst, chain);
xfrm_pol_hold(policy);
net->xfrm.policy_count[dir]++;
- atomic_inc(&flow_cache_genid);
- rt_genid_bump(net);
- if (delpol)
+ atomic_inc(&net->xfrm.flow_cache_genid);
+
+ /* After previous checking, family can either be AF_INET or AF_INET6 */
+ if (policy->family == AF_INET)
+ rt_genid_bump_ipv4(net);
+ else
+ rt_genid_bump_ipv6(net);
+
+ if (delpol) {
+ xfrm_policy_requeue(delpol, policy);
__xfrm_policy_unlink(delpol, dir);
- policy->index = delpol ? delpol->index : xfrm_gen_index(net, dir);
+ }
+ policy->index = delpol ? delpol->index : xfrm_gen_index(net, dir, policy->index);
hlist_add_head(&policy->byidx, net->xfrm.policy_byidx+idx_hash(net, policy->index));
policy->curlft.add_time = get_seconds();
policy->curlft.use_time = 0;
if (!mod_timer(&policy->timer, jiffies + HZ))
xfrm_pol_hold(policy);
list_add(&policy->walk.all, &net->xfrm.policy_all);
- write_unlock_bh(&xfrm_policy_lock);
+ write_unlock_bh(&net->xfrm.xfrm_policy_lock);
if (delpol)
xfrm_policy_kill(delpol);
@@ -630,13 +696,12 @@ struct xfrm_policy *xfrm_policy_bysel_ctx(struct net *net, u32 mark, u8 type,
{
struct xfrm_policy *pol, *ret;
struct hlist_head *chain;
- struct hlist_node *entry;
*err = 0;
- write_lock_bh(&xfrm_policy_lock);
+ write_lock_bh(&net->xfrm.xfrm_policy_lock);
chain = policy_hash_bysel(net, sel, sel->family, dir);
ret = NULL;
- hlist_for_each_entry(pol, entry, chain, bydst) {
+ hlist_for_each_entry(pol, chain, bydst) {
if (pol->type == type &&
(mark & pol->mark.m) == pol->mark.v &&
!selector_cmp(sel, &pol->selector) &&
@@ -646,7 +711,7 @@ struct xfrm_policy *xfrm_policy_bysel_ctx(struct net *net, u32 mark, u8 type,
*err = security_xfrm_policy_delete(
pol->security);
if (*err) {
- write_unlock_bh(&xfrm_policy_lock);
+ write_unlock_bh(&net->xfrm.xfrm_policy_lock);
return pol;
}
__xfrm_policy_unlink(pol, dir);
@@ -655,7 +720,7 @@ struct xfrm_policy *xfrm_policy_bysel_ctx(struct net *net, u32 mark, u8 type,
break;
}
}
- write_unlock_bh(&xfrm_policy_lock);
+ write_unlock_bh(&net->xfrm.xfrm_policy_lock);
if (ret && delete)
xfrm_policy_kill(ret);
@@ -668,17 +733,16 @@ struct xfrm_policy *xfrm_policy_byid(struct net *net, u32 mark, u8 type,
{
struct xfrm_policy *pol, *ret;
struct hlist_head *chain;
- struct hlist_node *entry;
*err = -ENOENT;
if (xfrm_policy_id2dir(id) != dir)
return NULL;
*err = 0;
- write_lock_bh(&xfrm_policy_lock);
+ write_lock_bh(&net->xfrm.xfrm_policy_lock);
chain = net->xfrm.policy_byidx + idx_hash(net, id);
ret = NULL;
- hlist_for_each_entry(pol, entry, chain, byidx) {
+ hlist_for_each_entry(pol, chain, byidx) {
if (pol->type == type && pol->index == id &&
(mark & pol->mark.m) == pol->mark.v) {
xfrm_pol_hold(pol);
@@ -686,7 +750,7 @@ struct xfrm_policy *xfrm_policy_byid(struct net *net, u32 mark, u8 type,
*err = security_xfrm_policy_delete(
pol->security);
if (*err) {
- write_unlock_bh(&xfrm_policy_lock);
+ write_unlock_bh(&net->xfrm.xfrm_policy_lock);
return pol;
}
__xfrm_policy_unlink(pol, dir);
@@ -695,7 +759,7 @@ struct xfrm_policy *xfrm_policy_byid(struct net *net, u32 mark, u8 type,
break;
}
}
- write_unlock_bh(&xfrm_policy_lock);
+ write_unlock_bh(&net->xfrm.xfrm_policy_lock);
if (ret && delete)
xfrm_policy_kill(ret);
@@ -705,30 +769,26 @@ EXPORT_SYMBOL(xfrm_policy_byid);
#ifdef CONFIG_SECURITY_NETWORK_XFRM
static inline int
-xfrm_policy_flush_secctx_check(struct net *net, u8 type, struct xfrm_audit *audit_info)
+xfrm_policy_flush_secctx_check(struct net *net, u8 type, bool task_valid)
{
int dir, err = 0;
for (dir = 0; dir < XFRM_POLICY_MAX; dir++) {
struct xfrm_policy *pol;
- struct hlist_node *entry;
int i;
- hlist_for_each_entry(pol, entry,
+ hlist_for_each_entry(pol,
&net->xfrm.policy_inexact[dir], bydst) {
if (pol->type != type)
continue;
err = security_xfrm_policy_delete(pol->security);
if (err) {
- xfrm_audit_policy_delete(pol, 0,
- audit_info->loginuid,
- audit_info->sessionid,
- audit_info->secid);
+ xfrm_audit_policy_delete(pol, 0, task_valid);
return err;
}
}
for (i = net->xfrm.policy_bydst[dir].hmask; i >= 0; i--) {
- hlist_for_each_entry(pol, entry,
+ hlist_for_each_entry(pol,
net->xfrm.policy_bydst[dir].table + i,
bydst) {
if (pol->type != type)
@@ -737,9 +797,7 @@ xfrm_policy_flush_secctx_check(struct net *net, u8 type, struct xfrm_audit *audi
pol->security);
if (err) {
xfrm_audit_policy_delete(pol, 0,
- audit_info->loginuid,
- audit_info->sessionid,
- audit_info->secid);
+ task_valid);
return err;
}
}
@@ -749,64 +807,58 @@ xfrm_policy_flush_secctx_check(struct net *net, u8 type, struct xfrm_audit *audi
}
#else
static inline int
-xfrm_policy_flush_secctx_check(struct net *net, u8 type, struct xfrm_audit *audit_info)
+xfrm_policy_flush_secctx_check(struct net *net, u8 type, bool task_valid)
{
return 0;
}
#endif
-int xfrm_policy_flush(struct net *net, u8 type, struct xfrm_audit *audit_info)
+int xfrm_policy_flush(struct net *net, u8 type, bool task_valid)
{
int dir, err = 0, cnt = 0;
- write_lock_bh(&xfrm_policy_lock);
+ write_lock_bh(&net->xfrm.xfrm_policy_lock);
- err = xfrm_policy_flush_secctx_check(net, type, audit_info);
+ err = xfrm_policy_flush_secctx_check(net, type, task_valid);
if (err)
goto out;
for (dir = 0; dir < XFRM_POLICY_MAX; dir++) {
struct xfrm_policy *pol;
- struct hlist_node *entry;
int i;
again1:
- hlist_for_each_entry(pol, entry,
+ hlist_for_each_entry(pol,
&net->xfrm.policy_inexact[dir], bydst) {
if (pol->type != type)
continue;
__xfrm_policy_unlink(pol, dir);
- write_unlock_bh(&xfrm_policy_lock);
+ write_unlock_bh(&net->xfrm.xfrm_policy_lock);
cnt++;
- xfrm_audit_policy_delete(pol, 1, audit_info->loginuid,
- audit_info->sessionid,
- audit_info->secid);
+ xfrm_audit_policy_delete(pol, 1, task_valid);
xfrm_policy_kill(pol);
- write_lock_bh(&xfrm_policy_lock);
+ write_lock_bh(&net->xfrm.xfrm_policy_lock);
goto again1;
}
for (i = net->xfrm.policy_bydst[dir].hmask; i >= 0; i--) {
again2:
- hlist_for_each_entry(pol, entry,
+ hlist_for_each_entry(pol,
net->xfrm.policy_bydst[dir].table + i,
bydst) {
if (pol->type != type)
continue;
__xfrm_policy_unlink(pol, dir);
- write_unlock_bh(&xfrm_policy_lock);
+ write_unlock_bh(&net->xfrm.xfrm_policy_lock);
cnt++;
- xfrm_audit_policy_delete(pol, 1,
- audit_info->loginuid,
- audit_info->sessionid,
- audit_info->secid);
+ xfrm_audit_policy_delete(pol, 1, task_valid);
xfrm_policy_kill(pol);
- write_lock_bh(&xfrm_policy_lock);
+ write_lock_bh(&net->xfrm.xfrm_policy_lock);
goto again2;
}
}
@@ -815,7 +867,7 @@ int xfrm_policy_flush(struct net *net, u8 type, struct xfrm_audit *audit_info)
if (!cnt)
err = -ESRCH;
out:
- write_unlock_bh(&xfrm_policy_lock);
+ write_unlock_bh(&net->xfrm.xfrm_policy_lock);
return err;
}
EXPORT_SYMBOL(xfrm_policy_flush);
@@ -835,7 +887,7 @@ int xfrm_policy_walk(struct net *net, struct xfrm_policy_walk *walk,
if (list_empty(&walk->walk.all) && walk->seq != 0)
return 0;
- write_lock_bh(&xfrm_policy_lock);
+ write_lock_bh(&net->xfrm.xfrm_policy_lock);
if (list_empty(&walk->walk.all))
x = list_first_entry(&net->xfrm.policy_all, struct xfrm_policy_walk_entry, all);
else
@@ -861,7 +913,7 @@ int xfrm_policy_walk(struct net *net, struct xfrm_policy_walk *walk,
}
list_del_init(&walk->walk.all);
out:
- write_unlock_bh(&xfrm_policy_lock);
+ write_unlock_bh(&net->xfrm.xfrm_policy_lock);
return error;
}
EXPORT_SYMBOL(xfrm_policy_walk);
@@ -875,14 +927,14 @@ void xfrm_policy_walk_init(struct xfrm_policy_walk *walk, u8 type)
}
EXPORT_SYMBOL(xfrm_policy_walk_init);
-void xfrm_policy_walk_done(struct xfrm_policy_walk *walk)
+void xfrm_policy_walk_done(struct xfrm_policy_walk *walk, struct net *net)
{
if (list_empty(&walk->walk.all))
return;
- write_lock_bh(&xfrm_policy_lock);
+ write_lock_bh(&net->xfrm.xfrm_policy_lock); /*FIXME where is net? */
list_del(&walk->walk.all);
- write_unlock_bh(&xfrm_policy_lock);
+ write_unlock_bh(&net->xfrm.xfrm_policy_lock);
}
EXPORT_SYMBOL(xfrm_policy_walk_done);
@@ -919,7 +971,6 @@ static struct xfrm_policy *xfrm_policy_lookup_bytype(struct net *net, u8 type,
int err;
struct xfrm_policy *pol, *ret;
const xfrm_address_t *daddr, *saddr;
- struct hlist_node *entry;
struct hlist_head *chain;
u32 priority = ~0U;
@@ -928,10 +979,10 @@ static struct xfrm_policy *xfrm_policy_lookup_bytype(struct net *net, u8 type,
if (unlikely(!daddr || !saddr))
return NULL;
- read_lock_bh(&xfrm_policy_lock);
+ read_lock_bh(&net->xfrm.xfrm_policy_lock);
chain = policy_hash_direct(net, daddr, saddr, family, dir);
ret = NULL;
- hlist_for_each_entry(pol, entry, chain, bydst) {
+ hlist_for_each_entry(pol, chain, bydst) {
err = xfrm_policy_match(pol, fl, type, family, dir);
if (err) {
if (err == -ESRCH)
@@ -947,7 +998,7 @@ static struct xfrm_policy *xfrm_policy_lookup_bytype(struct net *net, u8 type,
}
}
chain = &net->xfrm.policy_inexact[dir];
- hlist_for_each_entry(pol, entry, chain, bydst) {
+ hlist_for_each_entry(pol, chain, bydst) {
err = xfrm_policy_match(pol, fl, type, family, dir);
if (err) {
if (err == -ESRCH)
@@ -964,7 +1015,7 @@ static struct xfrm_policy *xfrm_policy_lookup_bytype(struct net *net, u8 type,
if (ret)
xfrm_pol_hold(ret);
fail:
- read_unlock_bh(&xfrm_policy_lock);
+ read_unlock_bh(&net->xfrm.xfrm_policy_lock);
return ret;
}
@@ -982,6 +1033,24 @@ __xfrm_policy_lookup(struct net *net, const struct flowi *fl, u16 family, u8 dir
return xfrm_policy_lookup_bytype(net, XFRM_POLICY_TYPE_MAIN, fl, family, dir);
}
+static int flow_to_policy_dir(int dir)
+{
+ if (XFRM_POLICY_IN == FLOW_DIR_IN &&
+ XFRM_POLICY_OUT == FLOW_DIR_OUT &&
+ XFRM_POLICY_FWD == FLOW_DIR_FWD)
+ return dir;
+
+ switch (dir) {
+ default:
+ case FLOW_DIR_IN:
+ return XFRM_POLICY_IN;
+ case FLOW_DIR_OUT:
+ return XFRM_POLICY_OUT;
+ case FLOW_DIR_FWD:
+ return XFRM_POLICY_FWD;
+ }
+}
+
static struct flow_cache_object *
xfrm_policy_lookup(struct net *net, const struct flowi *fl, u16 family,
u8 dir, struct flow_cache_object *old_obj, void *ctx)
@@ -991,7 +1060,7 @@ xfrm_policy_lookup(struct net *net, const struct flowi *fl, u16 family,
if (old_obj)
xfrm_pol_put(container_of(old_obj, struct xfrm_policy, flo));
- pol = __xfrm_policy_lookup(net, fl, family, dir);
+ pol = __xfrm_policy_lookup(net, fl, family, flow_to_policy_dir(dir));
if (IS_ERR_OR_NULL(pol))
return ERR_CAST(pol);
@@ -1023,8 +1092,9 @@ static struct xfrm_policy *xfrm_sk_policy_lookup(struct sock *sk, int dir,
const struct flowi *fl)
{
struct xfrm_policy *pol;
+ struct net *net = sock_net(sk);
- read_lock_bh(&xfrm_policy_lock);
+ read_lock_bh(&net->xfrm.xfrm_policy_lock);
if ((pol = sk->sk_policy[dir]) != NULL) {
bool match = xfrm_selector_match(&pol->selector, fl,
sk->sk_family);
@@ -1048,7 +1118,7 @@ static struct xfrm_policy *xfrm_sk_policy_lookup(struct sock *sk, int dir,
pol = NULL;
}
out:
- read_unlock_bh(&xfrm_policy_lock);
+ read_unlock_bh(&net->xfrm.xfrm_policy_lock);
return pol;
}
@@ -1076,7 +1146,7 @@ static struct xfrm_policy *__xfrm_policy_unlink(struct xfrm_policy *pol,
if (hlist_unhashed(&pol->bydst))
return NULL;
- hlist_del(&pol->bydst);
+ hlist_del_init(&pol->bydst);
hlist_del(&pol->byidx);
list_del(&pol->walk.all);
net->xfrm.policy_count[dir]--;
@@ -1086,9 +1156,11 @@ static struct xfrm_policy *__xfrm_policy_unlink(struct xfrm_policy *pol,
int xfrm_policy_delete(struct xfrm_policy *pol, int dir)
{
- write_lock_bh(&xfrm_policy_lock);
+ struct net *net = xp_net(pol);
+
+ write_lock_bh(&net->xfrm.xfrm_policy_lock);
pol = __xfrm_policy_unlink(pol, dir);
- write_unlock_bh(&xfrm_policy_lock);
+ write_unlock_bh(&net->xfrm.xfrm_policy_lock);
if (pol) {
xfrm_policy_kill(pol);
return 0;
@@ -1107,20 +1179,24 @@ int xfrm_sk_policy_insert(struct sock *sk, int dir, struct xfrm_policy *pol)
return -EINVAL;
#endif
- write_lock_bh(&xfrm_policy_lock);
+ write_lock_bh(&net->xfrm.xfrm_policy_lock);
old_pol = sk->sk_policy[dir];
sk->sk_policy[dir] = pol;
if (pol) {
pol->curlft.add_time = get_seconds();
- pol->index = xfrm_gen_index(net, XFRM_POLICY_MAX+dir);
+ pol->index = xfrm_gen_index(net, XFRM_POLICY_MAX+dir, 0);
__xfrm_policy_link(pol, XFRM_POLICY_MAX+dir);
}
- if (old_pol)
+ if (old_pol) {
+ if (pol)
+ xfrm_policy_requeue(old_pol, pol);
+
/* Unlinking succeeds always. This is the only function
* allowed to delete or replace socket policy.
*/
__xfrm_policy_unlink(old_pol, XFRM_POLICY_MAX+dir);
- write_unlock_bh(&xfrm_policy_lock);
+ }
+ write_unlock_bh(&net->xfrm.xfrm_policy_lock);
if (old_pol) {
xfrm_policy_kill(old_pol);
@@ -1131,6 +1207,7 @@ int xfrm_sk_policy_insert(struct sock *sk, int dir, struct xfrm_policy *pol)
static struct xfrm_policy *clone_policy(const struct xfrm_policy *old, int dir)
{
struct xfrm_policy *newp = xfrm_policy_alloc(xp_net(old), GFP_ATOMIC);
+ struct net *net = xp_net(old);
if (newp) {
newp->selector = old->selector;
@@ -1149,9 +1226,9 @@ static struct xfrm_policy *clone_policy(const struct xfrm_policy *old, int dir)
newp->type = old->type;
memcpy(newp->xfrm_vec, old->xfrm_vec,
newp->xfrm_nr*sizeof(struct xfrm_tmpl));
- write_lock_bh(&xfrm_policy_lock);
+ write_lock_bh(&net->xfrm.xfrm_policy_lock);
__xfrm_policy_link(newp, XFRM_POLICY_MAX+dir);
- write_unlock_bh(&xfrm_policy_lock);
+ write_unlock_bh(&net->xfrm.xfrm_policy_lock);
xfrm_pol_put(newp);
}
return newp;
@@ -1197,7 +1274,7 @@ xfrm_tmpl_resolve_one(struct xfrm_policy *policy, const struct flowi *fl,
xfrm_address_t *saddr = xfrm_flowi_saddr(fl, family);
xfrm_address_t tmp;
- for (nx=0, i = 0; i < policy->xfrm_nr; i++) {
+ for (nx = 0, i = 0; i < policy->xfrm_nr; i++) {
struct xfrm_state *x;
xfrm_address_t *remote = daddr;
xfrm_address_t *local = saddr;
@@ -1227,9 +1304,9 @@ xfrm_tmpl_resolve_one(struct xfrm_policy *policy, const struct flowi *fl,
error = (x->km.state == XFRM_STATE_ERROR ?
-EINVAL : -EAGAIN);
xfrm_state_put(x);
- }
- else if (error == -ESRCH)
+ } else if (error == -ESRCH) {
error = -EAGAIN;
+ }
if (!tmpl->optional)
goto fail;
@@ -1237,7 +1314,7 @@ xfrm_tmpl_resolve_one(struct xfrm_policy *policy, const struct flowi *fl,
return nx;
fail:
- for (nx--; nx>=0; nx--)
+ for (nx--; nx >= 0; nx--)
xfrm_state_put(xfrm[nx]);
return error;
}
@@ -1274,7 +1351,7 @@ xfrm_tmpl_resolve(struct xfrm_policy **pols, int npols, const struct flowi *fl,
return cnx;
fail:
- for (cnx--; cnx>=0; cnx--)
+ for (cnx--; cnx >= 0; cnx--)
xfrm_state_put(tpp[cnx]);
return error;
@@ -1310,6 +1387,8 @@ static struct flow_cache_object *xfrm_bundle_flo_get(struct flow_cache_object *f
* It means we need to try again resolving. */
if (xdst->num_xfrms > 0)
return NULL;
+ } else if (dst->flags & DST_XFRM_QUEUE) {
+ return NULL;
} else {
/* Real bundle */
if (stale_bundle(dst))
@@ -1550,20 +1629,22 @@ free_dst:
goto out;
}
-static int inline
-xfrm_dst_alloc_copy(void **target, const void *src, int size)
+#ifdef CONFIG_XFRM_SUB_POLICY
+static int xfrm_dst_alloc_copy(void **target, const void *src, int size)
{
if (!*target) {
*target = kmalloc(size, GFP_ATOMIC);
if (!*target)
return -ENOMEM;
}
+
memcpy(*target, src, size);
return 0;
}
+#endif
-static int inline
-xfrm_dst_update_parent(struct dst_entry *dst, const struct xfrm_selector *sel)
+static int xfrm_dst_update_parent(struct dst_entry *dst,
+ const struct xfrm_selector *sel)
{
#ifdef CONFIG_XFRM_SUB_POLICY
struct xfrm_dst *xdst = (struct xfrm_dst *)dst;
@@ -1574,8 +1655,8 @@ xfrm_dst_update_parent(struct dst_entry *dst, const struct xfrm_selector *sel)
#endif
}
-static int inline
-xfrm_dst_update_origin(struct dst_entry *dst, const struct flowi *fl)
+static int xfrm_dst_update_origin(struct dst_entry *dst,
+ const struct flowi *fl)
{
#ifdef CONFIG_XFRM_SUB_POLICY
struct xfrm_dst *xdst = (struct xfrm_dst *)dst;
@@ -1613,7 +1694,7 @@ static int xfrm_expand_policies(const struct flowi *fl, u16 family,
xfrm_pols_put(pols, *num_pols);
return PTR_ERR(pols[1]);
}
- (*num_pols) ++;
+ (*num_pols)++;
(*num_xfrms) += pols[1]->xfrm_nr;
}
}
@@ -1667,12 +1748,189 @@ xfrm_resolve_and_create_bundle(struct xfrm_policy **pols, int num_pols,
}
xdst->num_pols = num_pols;
- memcpy(xdst->pols, pols, sizeof(struct xfrm_policy*) * num_pols);
+ memcpy(xdst->pols, pols, sizeof(struct xfrm_policy *) * num_pols);
xdst->policy_genid = atomic_read(&pols[0]->genid);
return xdst;
}
+static void xfrm_policy_queue_process(unsigned long arg)
+{
+ int err = 0;
+ struct sk_buff *skb;
+ struct sock *sk;
+ struct dst_entry *dst;
+ struct xfrm_policy *pol = (struct xfrm_policy *)arg;
+ struct xfrm_policy_queue *pq = &pol->polq;
+ struct flowi fl;
+ struct sk_buff_head list;
+
+ spin_lock(&pq->hold_queue.lock);
+ skb = skb_peek(&pq->hold_queue);
+ if (!skb) {
+ spin_unlock(&pq->hold_queue.lock);
+ goto out;
+ }
+ dst = skb_dst(skb);
+ sk = skb->sk;
+ xfrm_decode_session(skb, &fl, dst->ops->family);
+ spin_unlock(&pq->hold_queue.lock);
+
+ dst_hold(dst->path);
+ dst = xfrm_lookup(xp_net(pol), dst->path, &fl,
+ sk, 0);
+ if (IS_ERR(dst))
+ goto purge_queue;
+
+ if (dst->flags & DST_XFRM_QUEUE) {
+ dst_release(dst);
+
+ if (pq->timeout >= XFRM_QUEUE_TMO_MAX)
+ goto purge_queue;
+
+ pq->timeout = pq->timeout << 1;
+ if (!mod_timer(&pq->hold_timer, jiffies + pq->timeout))
+ xfrm_pol_hold(pol);
+ goto out;
+ }
+
+ dst_release(dst);
+
+ __skb_queue_head_init(&list);
+
+ spin_lock(&pq->hold_queue.lock);
+ pq->timeout = 0;
+ skb_queue_splice_init(&pq->hold_queue, &list);
+ spin_unlock(&pq->hold_queue.lock);
+
+ while (!skb_queue_empty(&list)) {
+ skb = __skb_dequeue(&list);
+
+ xfrm_decode_session(skb, &fl, skb_dst(skb)->ops->family);
+ dst_hold(skb_dst(skb)->path);
+ dst = xfrm_lookup(xp_net(pol), skb_dst(skb)->path,
+ &fl, skb->sk, 0);
+ if (IS_ERR(dst)) {
+ kfree_skb(skb);
+ continue;
+ }
+
+ nf_reset(skb);
+ skb_dst_drop(skb);
+ skb_dst_set(skb, dst);
+
+ err = dst_output(skb);
+ }
+
+out:
+ xfrm_pol_put(pol);
+ return;
+
+purge_queue:
+ pq->timeout = 0;
+ xfrm_queue_purge(&pq->hold_queue);
+ xfrm_pol_put(pol);
+}
+
+static int xdst_queue_output(struct sock *sk, struct sk_buff *skb)
+{
+ unsigned long sched_next;
+ struct dst_entry *dst = skb_dst(skb);
+ struct xfrm_dst *xdst = (struct xfrm_dst *) dst;
+ struct xfrm_policy *pol = xdst->pols[0];
+ struct xfrm_policy_queue *pq = &pol->polq;
+ const struct sk_buff *fclone = skb + 1;
+
+ if (unlikely(skb->fclone == SKB_FCLONE_ORIG &&
+ fclone->fclone == SKB_FCLONE_CLONE)) {
+ kfree_skb(skb);
+ return 0;
+ }
+
+ if (pq->hold_queue.qlen > XFRM_MAX_QUEUE_LEN) {
+ kfree_skb(skb);
+ return -EAGAIN;
+ }
+
+ skb_dst_force(skb);
+
+ spin_lock_bh(&pq->hold_queue.lock);
+
+ if (!pq->timeout)
+ pq->timeout = XFRM_QUEUE_TMO_MIN;
+
+ sched_next = jiffies + pq->timeout;
+
+ if (del_timer(&pq->hold_timer)) {
+ if (time_before(pq->hold_timer.expires, sched_next))
+ sched_next = pq->hold_timer.expires;
+ xfrm_pol_put(pol);
+ }
+
+ __skb_queue_tail(&pq->hold_queue, skb);
+ if (!mod_timer(&pq->hold_timer, sched_next))
+ xfrm_pol_hold(pol);
+
+ spin_unlock_bh(&pq->hold_queue.lock);
+
+ return 0;
+}
+
+static struct xfrm_dst *xfrm_create_dummy_bundle(struct net *net,
+ struct dst_entry *dst,
+ const struct flowi *fl,
+ int num_xfrms,
+ u16 family)
+{
+ int err;
+ struct net_device *dev;
+ struct dst_entry *dst1;
+ struct xfrm_dst *xdst;
+
+ xdst = xfrm_alloc_dst(net, family);
+ if (IS_ERR(xdst))
+ return xdst;
+
+ if (net->xfrm.sysctl_larval_drop || num_xfrms <= 0)
+ return xdst;
+
+ dst1 = &xdst->u.dst;
+ dst_hold(dst);
+ xdst->route = dst;
+
+ dst_copy_metrics(dst1, dst);
+
+ dst1->obsolete = DST_OBSOLETE_FORCE_CHK;
+ dst1->flags |= DST_HOST | DST_XFRM_QUEUE;
+ dst1->lastuse = jiffies;
+
+ dst1->input = dst_discard;
+ dst1->output = xdst_queue_output;
+
+ dst_hold(dst);
+ dst1->child = dst;
+ dst1->path = dst;
+
+ xfrm_init_path((struct xfrm_dst *)dst1, dst, 0);
+
+ err = -ENODEV;
+ dev = dst->dev;
+ if (!dev)
+ goto free_dst;
+
+ err = xfrm_fill_dst(xdst, dev, fl);
+ if (err)
+ goto free_dst;
+
+out:
+ return xdst;
+
+free_dst:
+ dst_release(dst1);
+ xdst = ERR_PTR(err);
+ goto out;
+}
+
static struct flow_cache_object *
xfrm_bundle_lookup(struct net *net, const struct flowi *fl, u16 family, u8 dir,
struct flow_cache_object *oldflo, void *ctx)
@@ -1706,7 +1964,8 @@ xfrm_bundle_lookup(struct net *net, const struct flowi *fl, u16 family, u8 dir,
* previous cache entry */
if (xdst == NULL) {
num_pols = 1;
- pols[0] = __xfrm_policy_lookup(net, fl, family, dir);
+ pols[0] = __xfrm_policy_lookup(net, fl, family,
+ flow_to_policy_dir(dir));
err = xfrm_expand_policies(fl, family, pols,
&num_pols, &num_xfrms);
if (err < 0)
@@ -1751,14 +2010,14 @@ make_dummy_bundle:
/* We found policies, but there's no bundles to instantiate:
* either because the policy blocks, has no transformations or
* we could not build template (no xfrm_states).*/
- xdst = xfrm_alloc_dst(net, family);
+ xdst = xfrm_create_dummy_bundle(net, dst_orig, fl, num_xfrms, family);
if (IS_ERR(xdst)) {
xfrm_pols_put(pols, num_pols);
return ERR_CAST(xdst);
}
xdst->num_pols = num_pols;
xdst->num_xfrms = num_xfrms;
- memcpy(xdst->pols, pols, sizeof(struct xfrm_policy*) * num_pols);
+ memcpy(xdst->pols, pols, sizeof(struct xfrm_policy *) * num_pols);
dst_hold(&xdst->u.dst);
return &xdst->flo;
@@ -1807,7 +2066,6 @@ struct dst_entry *xfrm_lookup(struct net *net, struct dst_entry *dst_orig,
u8 dir = policy_to_flow_dir(XFRM_POLICY_OUT);
int i, err, num_pols, num_xfrms = 0, drop_pols = 0;
-restart:
dst = NULL;
xdst = NULL;
route = NULL;
@@ -1840,12 +2098,7 @@ restart:
}
dst_hold(&xdst->u.dst);
-
- spin_lock_bh(&xfrm_policy_sk_bundle_lock);
- xdst->u.dst.next = xfrm_policy_sk_bundles;
- xfrm_policy_sk_bundles = &xdst->u.dst;
- spin_unlock_bh(&xfrm_policy_sk_bundle_lock);
-
+ xdst->u.dst.flags |= DST_NOCACHE;
route = xdst->route;
}
}
@@ -1868,7 +2121,7 @@ restart:
num_pols = xdst->num_pols;
num_xfrms = xdst->num_xfrms;
- memcpy(pols, xdst->pols, sizeof(struct xfrm_policy*) * num_pols);
+ memcpy(pols, xdst->pols, sizeof(struct xfrm_policy *) * num_pols);
route = xdst->route;
}
@@ -1881,31 +2134,14 @@ restart:
* have the xfrm_state's. We need to wait for KM to
* negotiate new SA's or bail out with error.*/
if (net->xfrm.sysctl_larval_drop) {
- /* EREMOTE tells the caller to generate
- * a one-shot blackhole route. */
dst_release(dst);
xfrm_pols_put(pols, drop_pols);
XFRM_INC_STATS(net, LINUX_MIB_XFRMOUTNOSTATES);
return make_blackhole(net, family, dst_orig);
}
- if (fl->flowi_flags & FLOWI_FLAG_CAN_SLEEP) {
- DECLARE_WAITQUEUE(wait, current);
- add_wait_queue(&net->xfrm.km_waitq, &wait);
- set_current_state(TASK_INTERRUPTIBLE);
- schedule();
- set_current_state(TASK_RUNNING);
- remove_wait_queue(&net->xfrm.km_waitq, &wait);
-
- if (!signal_pending(current)) {
- dst_release(dst);
- goto restart;
- }
-
- err = -ERESTART;
- } else
- err = -EAGAIN;
+ err = -EAGAIN;
XFRM_INC_STATS(net, LINUX_MIB_XFRMOUTNOSTATES);
goto error;
@@ -2081,7 +2317,7 @@ int __xfrm_policy_check(struct sock *sk, int dir, struct sk_buff *skb,
if (skb->sp) {
int i;
- for (i=skb->sp->len-1; i>=0; i--) {
+ for (i = skb->sp->len-1; i >= 0; i--) {
struct xfrm_state *x = skb->sp->xvec[i];
if (!xfrm_selector_match(&x->sel, &fl, family)) {
XFRM_INC_STATS(net, LINUX_MIB_XFRMINSTATEMISMATCH);
@@ -2127,7 +2363,7 @@ int __xfrm_policy_check(struct sock *sk, int dir, struct sk_buff *skb,
pol->curlft.use_time = get_seconds();
pols[0] = pol;
- npols ++;
+ npols++;
#ifdef CONFIG_XFRM_SUB_POLICY
if (pols[0]->type != XFRM_POLICY_TYPE_MAIN) {
pols[1] = xfrm_policy_lookup_bytype(net, XFRM_POLICY_TYPE_MAIN,
@@ -2139,7 +2375,7 @@ int __xfrm_policy_check(struct sock *sk, int dir, struct sk_buff *skb,
return 0;
}
pols[1]->curlft.use_time = get_seconds();
- npols ++;
+ npols++;
}
}
#endif
@@ -2171,7 +2407,7 @@ int __xfrm_policy_check(struct sock *sk, int dir, struct sk_buff *skb,
}
xfrm_nr = ti;
if (npols > 1) {
- xfrm_tmpl_sort(stp, tpp, xfrm_nr, family);
+ xfrm_tmpl_sort(stp, tpp, xfrm_nr, family, net);
tpp = stp;
}
@@ -2296,32 +2532,15 @@ static struct dst_entry *xfrm_negative_advice(struct dst_entry *dst)
return dst;
}
-static void __xfrm_garbage_collect(struct net *net)
-{
- struct dst_entry *head, *next;
-
- spin_lock_bh(&xfrm_policy_sk_bundle_lock);
- head = xfrm_policy_sk_bundles;
- xfrm_policy_sk_bundles = NULL;
- spin_unlock_bh(&xfrm_policy_sk_bundle_lock);
-
- while (head) {
- next = head->next;
- dst_free(head);
- head = next;
- }
-}
-
-static void xfrm_garbage_collect(struct net *net)
+void xfrm_garbage_collect(struct net *net)
{
- flow_cache_flush();
- __xfrm_garbage_collect(net);
+ flow_cache_flush(net);
}
+EXPORT_SYMBOL(xfrm_garbage_collect);
static void xfrm_garbage_collect_deferred(struct net *net)
{
- flow_cache_flush_deferred();
- __xfrm_garbage_collect(net);
+ flow_cache_flush_deferred(net);
}
static void xfrm_init_pmtu(struct dst_entry *dst)
@@ -2359,6 +2578,9 @@ static int xfrm_bundle_ok(struct xfrm_dst *first)
(dst->dev && !netif_running(dst->dev)))
return 0;
+ if (dst->flags & DST_XFRM_QUEUE)
+ return 1;
+
last = NULL;
do {
@@ -2536,7 +2758,7 @@ static void __net_init xfrm_dst_ops_init(struct net *net)
static int xfrm_dev_event(struct notifier_block *this, unsigned long event, void *ptr)
{
- struct net_device *dev = ptr;
+ struct net_device *dev = netdev_notifier_info_to_dev(ptr);
switch (event) {
case NETDEV_DOWN:
@@ -2553,21 +2775,19 @@ static struct notifier_block xfrm_dev_notifier = {
static int __net_init xfrm_statistics_init(struct net *net)
{
int rv;
-
- if (snmp_mib_init((void __percpu **)net->mib.xfrm_statistics,
- sizeof(struct linux_xfrm_mib),
- __alignof__(struct linux_xfrm_mib)) < 0)
+ net->mib.xfrm_statistics = alloc_percpu(struct linux_xfrm_mib);
+ if (!net->mib.xfrm_statistics)
return -ENOMEM;
rv = xfrm_proc_init(net);
if (rv < 0)
- snmp_mib_free((void __percpu **)net->mib.xfrm_statistics);
+ free_percpu(net->mib.xfrm_statistics);
return rv;
}
static void xfrm_statistics_fini(struct net *net)
{
xfrm_proc_fini(net);
- snmp_mib_free((void __percpu **)net->mib.xfrm_statistics);
+ free_percpu(net->mib.xfrm_statistics);
}
#else
static int __net_init xfrm_statistics_init(struct net *net)
@@ -2632,21 +2852,14 @@ out_byidx:
static void xfrm_policy_fini(struct net *net)
{
- struct xfrm_audit audit_info;
unsigned int sz;
int dir;
flush_work(&net->xfrm.policy_hash_work);
#ifdef CONFIG_XFRM_SUB_POLICY
- audit_info.loginuid = INVALID_UID;
- audit_info.sessionid = -1;
- audit_info.secid = 0;
- xfrm_policy_flush(net, XFRM_POLICY_TYPE_SUB, &audit_info);
+ xfrm_policy_flush(net, XFRM_POLICY_TYPE_SUB, false);
#endif
- audit_info.loginuid = INVALID_UID;
- audit_info.sessionid = -1;
- audit_info.secid = 0;
- xfrm_policy_flush(net, XFRM_POLICY_TYPE_MAIN, &audit_info);
+ xfrm_policy_flush(net, XFRM_POLICY_TYPE_MAIN, false);
WARN_ON(!list_empty(&net->xfrm.policy_all));
@@ -2656,7 +2869,7 @@ static void xfrm_policy_fini(struct net *net)
WARN_ON(!hlist_empty(&net->xfrm.policy_inexact[dir]));
htab = &net->xfrm.policy_bydst[dir];
- sz = (htab->hmask + 1);
+ sz = (htab->hmask + 1) * sizeof(struct hlist_head);
WARN_ON(!hlist_empty(htab->table));
xfrm_hash_free(htab->table, sz);
}
@@ -2683,8 +2896,19 @@ static int __net_init xfrm_net_init(struct net *net)
rv = xfrm_sysctl_init(net);
if (rv < 0)
goto out_sysctl;
+ rv = flow_cache_init(net);
+ if (rv < 0)
+ goto out;
+
+ /* Initialize the per-net locks here */
+ spin_lock_init(&net->xfrm.xfrm_state_lock);
+ rwlock_init(&net->xfrm.xfrm_policy_lock);
+ mutex_init(&net->xfrm.xfrm_cfg_mutex);
+
return 0;
+out:
+ xfrm_sysctl_fini(net);
out_sysctl:
xfrm_policy_fini(net);
out_policy:
@@ -2697,6 +2921,7 @@ out_statistics:
static void __net_exit xfrm_net_exit(struct net *net)
{
+ flow_cache_fini(net);
xfrm_sysctl_fini(net);
xfrm_policy_fini(net);
xfrm_state_fini(net);
@@ -2725,7 +2950,7 @@ static void xfrm_audit_common_policyinfo(struct xfrm_policy *xp,
audit_log_format(audit_buf, " sec_alg=%u sec_doi=%u sec_obj=%s",
ctx->ctx_alg, ctx->ctx_doi, ctx->ctx_str);
- switch(sel->family) {
+ switch (sel->family) {
case AF_INET:
audit_log_format(audit_buf, " src=%pI4", &sel->saddr.a4);
if (sel->prefixlen_s != 32)
@@ -2749,15 +2974,14 @@ static void xfrm_audit_common_policyinfo(struct xfrm_policy *xp,
}
}
-void xfrm_audit_policy_add(struct xfrm_policy *xp, int result,
- kuid_t auid, u32 sessionid, u32 secid)
+void xfrm_audit_policy_add(struct xfrm_policy *xp, int result, bool task_valid)
{
struct audit_buffer *audit_buf;
audit_buf = xfrm_audit_start("SPD-add");
if (audit_buf == NULL)
return;
- xfrm_audit_helper_usrinfo(auid, sessionid, secid, audit_buf);
+ xfrm_audit_helper_usrinfo(task_valid, audit_buf);
audit_log_format(audit_buf, " res=%u", result);
xfrm_audit_common_policyinfo(xp, audit_buf);
audit_log_end(audit_buf);
@@ -2765,14 +2989,14 @@ void xfrm_audit_policy_add(struct xfrm_policy *xp, int result,
EXPORT_SYMBOL_GPL(xfrm_audit_policy_add);
void xfrm_audit_policy_delete(struct xfrm_policy *xp, int result,
- kuid_t auid, u32 sessionid, u32 secid)
+ bool task_valid)
{
struct audit_buffer *audit_buf;
audit_buf = xfrm_audit_start("SPD-delete");
if (audit_buf == NULL)
return;
- xfrm_audit_helper_usrinfo(auid, sessionid, secid, audit_buf);
+ xfrm_audit_helper_usrinfo(task_valid, audit_buf);
audit_log_format(audit_buf, " res=%u", result);
xfrm_audit_common_policyinfo(xp, audit_buf);
audit_log_end(audit_buf);
@@ -2786,10 +3010,10 @@ static bool xfrm_migrate_selector_match(const struct xfrm_selector *sel_cmp,
{
if (sel_cmp->proto == IPSEC_ULPROTO_ANY) {
if (sel_tgt->family == sel_cmp->family &&
- xfrm_addr_cmp(&sel_tgt->daddr, &sel_cmp->daddr,
- sel_cmp->family) == 0 &&
- xfrm_addr_cmp(&sel_tgt->saddr, &sel_cmp->saddr,
- sel_cmp->family) == 0 &&
+ xfrm_addr_equal(&sel_tgt->daddr, &sel_cmp->daddr,
+ sel_cmp->family) &&
+ xfrm_addr_equal(&sel_tgt->saddr, &sel_cmp->saddr,
+ sel_cmp->family) &&
sel_tgt->prefixlen_d == sel_cmp->prefixlen_d &&
sel_tgt->prefixlen_s == sel_cmp->prefixlen_s) {
return true;
@@ -2802,17 +3026,16 @@ static bool xfrm_migrate_selector_match(const struct xfrm_selector *sel_cmp,
return false;
}
-static struct xfrm_policy * xfrm_migrate_policy_find(const struct xfrm_selector *sel,
- u8 dir, u8 type)
+static struct xfrm_policy *xfrm_migrate_policy_find(const struct xfrm_selector *sel,
+ u8 dir, u8 type, struct net *net)
{
struct xfrm_policy *pol, *ret = NULL;
- struct hlist_node *entry;
struct hlist_head *chain;
u32 priority = ~0U;
- read_lock_bh(&xfrm_policy_lock);
- chain = policy_hash_direct(&init_net, &sel->daddr, &sel->saddr, sel->family, dir);
- hlist_for_each_entry(pol, entry, chain, bydst) {
+ read_lock_bh(&net->xfrm.xfrm_policy_lock); /*FIXME*/
+ chain = policy_hash_direct(net, &sel->daddr, &sel->saddr, sel->family, dir);
+ hlist_for_each_entry(pol, chain, bydst) {
if (xfrm_migrate_selector_match(sel, &pol->selector) &&
pol->type == type) {
ret = pol;
@@ -2820,8 +3043,8 @@ static struct xfrm_policy * xfrm_migrate_policy_find(const struct xfrm_selector
break;
}
}
- chain = &init_net.xfrm.policy_inexact[dir];
- hlist_for_each_entry(pol, entry, chain, bydst) {
+ chain = &net->xfrm.policy_inexact[dir];
+ hlist_for_each_entry(pol, chain, bydst) {
if (xfrm_migrate_selector_match(sel, &pol->selector) &&
pol->type == type &&
pol->priority < priority) {
@@ -2833,7 +3056,7 @@ static struct xfrm_policy * xfrm_migrate_policy_find(const struct xfrm_selector
if (ret)
xfrm_pol_hold(ret);
- read_unlock_bh(&xfrm_policy_lock);
+ read_unlock_bh(&net->xfrm.xfrm_policy_lock);
return ret;
}
@@ -2847,10 +3070,10 @@ static int migrate_tmpl_match(const struct xfrm_migrate *m, const struct xfrm_tm
switch (t->mode) {
case XFRM_MODE_TUNNEL:
case XFRM_MODE_BEET:
- if (xfrm_addr_cmp(&t->id.daddr, &m->old_daddr,
- m->old_family) == 0 &&
- xfrm_addr_cmp(&t->saddr, &m->old_saddr,
- m->old_family) == 0) {
+ if (xfrm_addr_equal(&t->id.daddr, &m->old_daddr,
+ m->old_family) &&
+ xfrm_addr_equal(&t->saddr, &m->old_saddr,
+ m->old_family)) {
match = 1;
}
break;
@@ -2916,10 +3139,10 @@ static int xfrm_migrate_check(const struct xfrm_migrate *m, int num_migrate)
return -EINVAL;
for (i = 0; i < num_migrate; i++) {
- if ((xfrm_addr_cmp(&m[i].old_daddr, &m[i].new_daddr,
- m[i].old_family) == 0) &&
- (xfrm_addr_cmp(&m[i].old_saddr, &m[i].new_saddr,
- m[i].old_family) == 0))
+ if (xfrm_addr_equal(&m[i].old_daddr, &m[i].new_daddr,
+ m[i].old_family) &&
+ xfrm_addr_equal(&m[i].old_saddr, &m[i].new_saddr,
+ m[i].old_family))
return -EINVAL;
if (xfrm_addr_any(&m[i].new_daddr, m[i].new_family) ||
xfrm_addr_any(&m[i].new_saddr, m[i].new_family))
@@ -2944,7 +3167,7 @@ static int xfrm_migrate_check(const struct xfrm_migrate *m, int num_migrate)
int xfrm_migrate(const struct xfrm_selector *sel, u8 dir, u8 type,
struct xfrm_migrate *m, int num_migrate,
- struct xfrm_kmaddress *k)
+ struct xfrm_kmaddress *k, struct net *net)
{
int i, err, nx_cur = 0, nx_new = 0;
struct xfrm_policy *pol = NULL;
@@ -2957,14 +3180,14 @@ int xfrm_migrate(const struct xfrm_selector *sel, u8 dir, u8 type,
goto out;
/* Stage 1 - find policy */
- if ((pol = xfrm_migrate_policy_find(sel, dir, type)) == NULL) {
+ if ((pol = xfrm_migrate_policy_find(sel, dir, type, net)) == NULL) {
err = -ENOENT;
goto out;
}
/* Stage 2 - find and update state(s) */
for (i = 0, mp = m; i < num_migrate; i++, mp++) {
- if ((x = xfrm_migrate_state_find(mp))) {
+ if ((x = xfrm_migrate_state_find(mp, net))) {
x_cur[nx_cur] = x;
nx_cur++;
if ((xc = xfrm_state_migrate(x, mp))) {
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-09 14:11:23 +0000