diff options
Diffstat (limited to 'net/xfrm')
| -rw-r--r-- | net/xfrm/xfrm_policy.c | 57 |
1 files changed, 33 insertions, 24 deletions
diff --git a/net/xfrm/xfrm_policy.c b/net/xfrm/xfrm_policy.c index ba4e95b8e24e..929b2fdaa2ef 100644 --- a/net/xfrm/xfrm_policy.c +++ b/net/xfrm/xfrm_policy.c @@ -322,12 +322,6 @@ static void xfrm_policy_kill(struct xfrm_policy *policy) schedule_work(&xfrm_policy_gc_work); } -struct xfrm_policy_hash { - struct hlist_head *table; - unsigned int hmask; -}; - -static struct xfrm_policy_hash xfrm_policy_bydst[XFRM_POLICY_MAX*2] __read_mostly; static unsigned int xfrm_policy_hashmax __read_mostly = 1 * 1024 * 1024; static inline unsigned int idx_hash(u32 index) @@ -337,20 +331,20 @@ static inline unsigned int idx_hash(u32 index) static struct hlist_head *policy_hash_bysel(struct xfrm_selector *sel, unsigned short family, int dir) { - unsigned int hmask = xfrm_policy_bydst[dir].hmask; + unsigned int hmask = init_net.xfrm.policy_bydst[dir].hmask; unsigned int hash = __sel_hash(sel, family, hmask); return (hash == hmask + 1 ? &init_net.xfrm.policy_inexact[dir] : - xfrm_policy_bydst[dir].table + hash); + init_net.xfrm.policy_bydst[dir].table + hash); } static struct hlist_head *policy_hash_direct(xfrm_address_t *daddr, xfrm_address_t *saddr, unsigned short family, int dir) { - unsigned int hmask = xfrm_policy_bydst[dir].hmask; + unsigned int hmask = init_net.xfrm.policy_bydst[dir].hmask; unsigned int hash = __addr_hash(daddr, saddr, family, hmask); - return xfrm_policy_bydst[dir].table + hash; + return init_net.xfrm.policy_bydst[dir].table + hash; } static void xfrm_dst_hash_transfer(struct hlist_head *list, @@ -407,10 +401,10 @@ static unsigned long xfrm_new_hash_mask(unsigned int old_hmask) static void xfrm_bydst_resize(int dir) { - unsigned int hmask = xfrm_policy_bydst[dir].hmask; + unsigned int hmask = init_net.xfrm.policy_bydst[dir].hmask; unsigned int nhashmask = xfrm_new_hash_mask(hmask); unsigned int nsize = (nhashmask + 1) * sizeof(struct hlist_head); - struct hlist_head *odst = xfrm_policy_bydst[dir].table; + struct hlist_head *odst = init_net.xfrm.policy_bydst[dir].table; struct hlist_head *ndst = xfrm_hash_alloc(nsize); int i; @@ -422,8 +416,8 @@ static void xfrm_bydst_resize(int dir) for (i = hmask; i >= 0; i--) xfrm_dst_hash_transfer(odst + i, ndst, nhashmask); - xfrm_policy_bydst[dir].table = ndst; - xfrm_policy_bydst[dir].hmask = nhashmask; + init_net.xfrm.policy_bydst[dir].table = ndst; + init_net.xfrm.policy_bydst[dir].hmask = nhashmask; write_unlock_bh(&xfrm_policy_lock); @@ -458,7 +452,7 @@ static void xfrm_byidx_resize(int total) static inline int xfrm_bydst_should_resize(int dir, int *total) { unsigned int cnt = xfrm_policy_count[dir]; - unsigned int hmask = xfrm_policy_bydst[dir].hmask; + unsigned int hmask = init_net.xfrm.policy_bydst[dir].hmask; if (total) *total += cnt; @@ -763,9 +757,9 @@ xfrm_policy_flush_secctx_check(u8 type, struct xfrm_audit *audit_info) return err; } } - for (i = xfrm_policy_bydst[dir].hmask; i >= 0; i--) { + for (i = init_net.xfrm.policy_bydst[dir].hmask; i >= 0; i--) { hlist_for_each_entry(pol, entry, - xfrm_policy_bydst[dir].table + i, + init_net.xfrm.policy_bydst[dir].table + i, bydst) { if (pol->type != type) continue; @@ -827,10 +821,10 @@ int xfrm_policy_flush(u8 type, struct xfrm_audit *audit_info) goto again1; } - for (i = xfrm_policy_bydst[dir].hmask; i >= 0; i--) { + for (i = init_net.xfrm.policy_bydst[dir].hmask; i >= 0; i--) { again2: hlist_for_each_entry(pol, entry, - xfrm_policy_bydst[dir].table + i, + init_net.xfrm.policy_bydst[dir].table + i, bydst) { if (pol->type != type) continue; @@ -2154,8 +2148,8 @@ static void xfrm_prune_bundles(int (*func)(struct dst_entry *)) &init_net.xfrm.policy_inexact[dir], bydst) prune_one_bundle(pol, func, &gc_list); - table = xfrm_policy_bydst[dir].table; - for (i = xfrm_policy_bydst[dir].hmask; i >= 0; i--) { + table = init_net.xfrm.policy_bydst[dir].table; + for (i = init_net.xfrm.policy_bydst[dir].hmask; i >= 0; i--) { hlist_for_each_entry(pol, entry, table + i, bydst) prune_one_bundle(pol, func, &gc_list); } @@ -2415,11 +2409,11 @@ static int __net_init xfrm_policy_init(struct net *net) INIT_HLIST_HEAD(&net->xfrm.policy_inexact[dir]); - htab = &xfrm_policy_bydst[dir]; + htab = &net->xfrm.policy_bydst[dir]; htab->table = xfrm_hash_alloc(sz); - htab->hmask = hmask; if (!htab->table) - panic("XFRM: failed to allocate bydst hash\n"); + goto out_bydst; + htab->hmask = hmask; } INIT_LIST_HEAD(&net->xfrm.policy_all); @@ -2427,6 +2421,14 @@ static int __net_init xfrm_policy_init(struct net *net) register_netdevice_notifier(&xfrm_dev_notifier); return 0; +out_bydst: + for (dir--; dir >= 0; dir--) { + struct xfrm_policy_hash *htab; + + htab = &net->xfrm.policy_bydst[dir]; + xfrm_hash_free(htab->table, sz); + } + xfrm_hash_free(net->xfrm.policy_byidx, sz); out_byidx: return -ENOMEM; } @@ -2439,7 +2441,14 @@ static void xfrm_policy_fini(struct net *net) WARN_ON(!list_empty(&net->xfrm.policy_all)); for (dir = 0; dir < XFRM_POLICY_MAX * 2; dir++) { + struct xfrm_policy_hash *htab; + WARN_ON(!hlist_empty(&net->xfrm.policy_inexact[dir])); + + htab = &net->xfrm.policy_bydst[dir]; + sz = (htab->hmask + 1); + WARN_ON(!hlist_empty(htab->table)); + xfrm_hash_free(htab->table, sz); } sz = (net->xfrm.policy_idx_hmask + 1) * sizeof(struct hlist_head); |