1 files changed, 69 insertions, 41 deletions

diff --git a/include/net/xfrm.h b/include/net/xfrm.h
index 11c890ad8ebb..2e9f5c0018ae 100644
--- a/include/net/xfrm.h
+++ b/include/net/xfrm.h
@@ -38,22 +38,15 @@
         MODULE_ALIAS("xfrm-type-" __stringify(family) "-" __stringify(proto))
 
 #ifdef CONFIG_XFRM_STATISTICS
-DECLARE_SNMP_STAT(struct linux_xfrm_mib, xfrm_statistics);
-#define XFRM_INC_STATS(field)           SNMP_INC_STATS(xfrm_statistics, field)
-#define XFRM_INC_STATS_BH(field)        SNMP_INC_STATS_BH(xfrm_statistics, field)
-#define XFRM_INC_STATS_USER(field)      SNMP_INC_STATS_USER(xfrm_statistics, field)
+#define XFRM_INC_STATS(net, field)      SNMP_INC_STATS((net)->mib.xfrm_statistics, field)
+#define XFRM_INC_STATS_BH(net, field)   SNMP_INC_STATS_BH((net)->mib.xfrm_statistics, field)
+#define XFRM_INC_STATS_USER(net, field) SNMP_INC_STATS_USER((net)-mib.xfrm_statistics, field)
 #else
-#define XFRM_INC_STATS(field)
-#define XFRM_INC_STATS_BH(field)
-#define XFRM_INC_STATS_USER(field)
+#define XFRM_INC_STATS(net, field)      ((void)(net))
+#define XFRM_INC_STATS_BH(net, field)   ((void)(net))
+#define XFRM_INC_STATS_USER(net, field) ((void)(net))
 #endif
 
-extern struct sock *xfrm_nl;
-extern u32 sysctl_xfrm_aevent_etime;
-extern u32 sysctl_xfrm_aevent_rseqth;
-extern int sysctl_xfrm_larval_drop;
-extern u32 sysctl_xfrm_acq_expires;
-
 extern struct mutex xfrm_cfg_mutex;
 
 /* Organization of SPD aka "XFRM rules"
@@ -130,6 +123,9 @@ struct xfrm_state_walk {
 /* Full description of state of transformer. */
 struct xfrm_state
 {
+#ifdef CONFIG_NET_NS
+        struct net              *xs_net;
+#endif
         union {
                 struct hlist_node       gclist;
                 struct hlist_node       bydst;
@@ -223,6 +219,11 @@ struct xfrm_state
         void                    *data;
 };
 
+static inline struct net *xs_net(struct xfrm_state *x)
+{
+        return read_pnet(&x->xs_net);
+}
+
 /* xflags - make enum if more show up */
 #define XFRM_TIME_DEFER 1
 
@@ -249,6 +250,7 @@ struct km_event
         u32     seq;
         u32     pid;
         u32     event;
+        struct net *net;
 };
 
 struct net_device;
@@ -257,10 +259,11 @@ struct xfrm_dst;
 struct xfrm_policy_afinfo {
         unsigned short          family;
         struct dst_ops          *dst_ops;
-        void                    (*garbage_collect)(void);
-        struct dst_entry        *(*dst_lookup)(int tos, xfrm_address_t *saddr,
+        void                    (*garbage_collect)(struct net *net);
+        struct dst_entry        *(*dst_lookup)(struct net *net, int tos,
+                                               xfrm_address_t *saddr,
                                                xfrm_address_t *daddr);
-        int                     (*get_saddr)(xfrm_address_t *saddr, xfrm_address_t *daddr);
+        int                     (*get_saddr)(struct net *net, xfrm_address_t *saddr, xfrm_address_t *daddr);
         struct dst_entry        *(*find_bundle)(struct flowi *fl, struct xfrm_policy *policy);
         void                    (*decode_session)(struct sk_buff *skb,
                                                   struct flowi *fl,
@@ -467,7 +470,9 @@ struct xfrm_policy_walk {
 
 struct xfrm_policy
 {
-        struct xfrm_policy      *next;
+#ifdef CONFIG_NET_NS
+        struct net              *xp_net;
+#endif
         struct hlist_node       bydst;
         struct hlist_node       byidx;
 
@@ -492,6 +497,11 @@ struct xfrm_policy
         struct xfrm_tmpl        xfrm_vec[XFRM_MAX_DEPTH];
 };
 
+static inline struct net *xp_net(struct xfrm_policy *xp)
+{
+        return read_pnet(&xp->xp_net);
+}
+
 struct xfrm_kmaddress {
         xfrm_address_t          local;
         xfrm_address_t          remote;
@@ -537,15 +547,13 @@ struct xfrm_mgr
         struct xfrm_policy      *(*compile_policy)(struct sock *sk, int opt, u8 *data, int len, int *dir);
         int                     (*new_mapping)(struct xfrm_state *x, xfrm_address_t *ipaddr, __be16 sport);
         int                     (*notify_policy)(struct xfrm_policy *x, int dir, struct km_event *c);
-        int                     (*report)(u8 proto, struct xfrm_selector *sel, xfrm_address_t *addr);
+        int                     (*report)(struct net *net, u8 proto, struct xfrm_selector *sel, xfrm_address_t *addr);
         int                     (*migrate)(struct xfrm_selector *sel, u8 dir, u8 type, struct xfrm_migrate *m, int num_bundles, struct xfrm_kmaddress *k);
 };
 
 extern int xfrm_register_km(struct xfrm_mgr *km);
 extern int xfrm_unregister_km(struct xfrm_mgr *km);
 
-extern unsigned int xfrm_policy_count[XFRM_POLICY_MAX*2];
-
 /*
  * This structure is used for the duration where packets are being
  * transformed by IPsec.  As soon as the packet leaves IPsec the
@@ -882,6 +890,7 @@ struct xfrm_dst
         u32 path_cookie;
 };
 
+#ifdef CONFIG_XFRM
 static inline void xfrm_dst_destroy(struct xfrm_dst *xdst)
 {
         dst_release(xdst->route);
@@ -894,6 +903,7 @@ static inline void xfrm_dst_destroy(struct xfrm_dst *xdst)
         xdst->partner = NULL;
 #endif
 }
+#endif
 
 extern void xfrm_dst_ifdown(struct dst_entry *dst, struct net_device *dev);
 
@@ -977,12 +987,13 @@ static inline int __xfrm_policy_check2(struct sock *sk, int dir,
                                        struct sk_buff *skb,
                                        unsigned int family, int reverse)
 {
+        struct net *net = dev_net(skb->dev);
         int ndir = dir | (reverse ? XFRM_POLICY_MASK + 1 : 0);
 
         if (sk && sk->sk_policy[XFRM_POLICY_IN])
                 return __xfrm_policy_check(sk, ndir, skb, family);
 
-        return  (!xfrm_policy_count[dir] && !skb->sp) ||
+        return  (!net->xfrm.policy_count[dir] && !skb->sp) ||
                 (skb->dst->flags & DST_NOPOLICY) ||
                 __xfrm_policy_check(sk, ndir, skb, family);
 }
@@ -1034,7 +1045,9 @@ extern int __xfrm_route_forward(struct sk_buff *skb, unsigned short family);
 
 static inline int xfrm_route_forward(struct sk_buff *skb, unsigned short family)
 {
-        return  !xfrm_policy_count[XFRM_POLICY_OUT] ||
+        struct net *net = dev_net(skb->dev);
+
+        return  !net->xfrm.policy_count[XFRM_POLICY_OUT] ||
                 (skb->dst->flags & DST_NOXFRM) ||
                 __xfrm_route_forward(skb, family);
 }
@@ -1268,7 +1281,8 @@ struct xfrm6_tunnel {
 
 extern void xfrm_init(void);
 extern void xfrm4_init(void);
-extern void xfrm_state_init(void);
+extern int xfrm_state_init(struct net *net);
+extern void xfrm_state_fini(struct net *net);
 extern void xfrm4_state_init(void);
 #ifdef CONFIG_XFRM
 extern int xfrm6_init(void);
@@ -1287,19 +1301,30 @@ static inline void xfrm6_fini(void)
 #endif
 
 #ifdef CONFIG_XFRM_STATISTICS
-extern int xfrm_proc_init(void);
+extern int xfrm_proc_init(struct net *net);
+extern void xfrm_proc_fini(struct net *net);
+#endif
+
+extern int xfrm_sysctl_init(struct net *net);
+#ifdef CONFIG_SYSCTL
+extern void xfrm_sysctl_fini(struct net *net);
+#else
+static inline void xfrm_sysctl_fini(struct net *net)
+{
+}
 #endif
 
 extern void xfrm_state_walk_init(struct xfrm_state_walk *walk, u8 proto);
-extern int xfrm_state_walk(struct xfrm_state_walk *walk,
+extern int xfrm_state_walk(struct net *net, struct xfrm_state_walk *walk,
                            int (*func)(struct xfrm_state *, int, void*), void *);
 extern void xfrm_state_walk_done(struct xfrm_state_walk *walk);
-extern struct xfrm_state *xfrm_state_alloc(void);
+extern struct xfrm_state *xfrm_state_alloc(struct net *net);
 extern struct xfrm_state *xfrm_state_find(xfrm_address_t *daddr, xfrm_address_t *saddr, 
                                           struct flowi *fl, struct xfrm_tmpl *tmpl,
                                           struct xfrm_policy *pol, int *err,
                                           unsigned short family);
-extern struct xfrm_state * xfrm_stateonly_find(xfrm_address_t *daddr,
+extern struct xfrm_state * xfrm_stateonly_find(struct net *net,
+                                               xfrm_address_t *daddr,
                                                xfrm_address_t *saddr,
                                                unsigned short family,
                                                u8 mode, u8 proto, u32 reqid);
@@ -1307,8 +1332,8 @@ extern int xfrm_state_check_expire(struct xfrm_state *x);
 extern void xfrm_state_insert(struct xfrm_state *x);
 extern int xfrm_state_add(struct xfrm_state *x);
 extern int xfrm_state_update(struct xfrm_state *x);
-extern struct xfrm_state *xfrm_state_lookup(xfrm_address_t *daddr, __be32 spi, u8 proto, unsigned short family);
-extern struct xfrm_state *xfrm_state_lookup_byaddr(xfrm_address_t *daddr, xfrm_address_t *saddr, u8 proto, unsigned short family);
+extern struct xfrm_state *xfrm_state_lookup(struct net *net, xfrm_address_t *daddr, __be32 spi, u8 proto, unsigned short family);
+extern struct xfrm_state *xfrm_state_lookup_byaddr(struct net *net, xfrm_address_t *daddr, xfrm_address_t *saddr, u8 proto, unsigned short family);
 #ifdef CONFIG_XFRM_SUB_POLICY
 extern int xfrm_tmpl_sort(struct xfrm_tmpl **dst, struct xfrm_tmpl **src,
                           int n, unsigned short family);
@@ -1345,9 +1370,9 @@ struct xfrmk_spdinfo {
         u32 spdhmcnt;
 };
 
-extern struct xfrm_state *xfrm_find_acq_byseq(u32 seq);
+extern struct xfrm_state *xfrm_find_acq_byseq(struct net *net, u32 seq);
 extern int xfrm_state_delete(struct xfrm_state *x);
-extern int xfrm_state_flush(u8 proto, struct xfrm_audit *audit_info);
+extern int xfrm_state_flush(struct net *net, u8 proto, struct xfrm_audit *audit_info);
 extern void xfrm_sad_getinfo(struct xfrmk_sadinfo *si);
 extern void xfrm_spd_getinfo(struct xfrmk_spdinfo *si);
 extern int xfrm_replay_check(struct xfrm_state *x,
@@ -1415,22 +1440,22 @@ static inline int xfrm4_udp_encap_rcv(struct sock *sk, struct sk_buff *skb)
 }
 #endif
 
-struct xfrm_policy *xfrm_policy_alloc(gfp_t gfp);
+struct xfrm_policy *xfrm_policy_alloc(struct net *net, gfp_t gfp);
 
 extern void xfrm_policy_walk_init(struct xfrm_policy_walk *walk, u8 type);
-extern int xfrm_policy_walk(struct xfrm_policy_walk *walk,
+extern int xfrm_policy_walk(struct net *net, struct xfrm_policy_walk *walk,
         int (*func)(struct xfrm_policy *, int, int, void*), void *);
 extern void xfrm_policy_walk_done(struct xfrm_policy_walk *walk);
 int xfrm_policy_insert(int dir, struct xfrm_policy *policy, int excl);
-struct xfrm_policy *xfrm_policy_bysel_ctx(u8 type, int dir,
+struct xfrm_policy *xfrm_policy_bysel_ctx(struct net *net, u8 type, int dir,
                                           struct xfrm_selector *sel,
                                           struct xfrm_sec_ctx *ctx, int delete,
                                           int *err);
-struct xfrm_policy *xfrm_policy_byid(u8, int dir, u32 id, int delete, int *err);
-int xfrm_policy_flush(u8 type, struct xfrm_audit *audit_info);
+struct xfrm_policy *xfrm_policy_byid(struct net *net, u8, int dir, u32 id, int delete, int *err);
+int xfrm_policy_flush(struct net *net, u8 type, struct xfrm_audit *audit_info);
 u32 xfrm_get_acqseq(void);
 extern int xfrm_alloc_spi(struct xfrm_state *x, u32 minspi, u32 maxspi);
-struct xfrm_state * xfrm_find_acq(u8 mode, u32 reqid, u8 proto,
+struct xfrm_state * xfrm_find_acq(struct net *net, u8 mode, u32 reqid, u8 proto,
                                   xfrm_address_t *daddr, xfrm_address_t *saddr,
                                   int create, unsigned short family);
 extern int xfrm_sk_policy_insert(struct sock *sk, int dir, struct xfrm_policy *pol);
@@ -1449,10 +1474,9 @@ extern int xfrm_migrate(struct xfrm_selector *sel, u8 dir, u8 type,
                         struct xfrm_kmaddress *k);
 #endif
 
-extern wait_queue_head_t km_waitq;
 extern int km_new_mapping(struct xfrm_state *x, xfrm_address_t *ipaddr, __be16 sport);
 extern void km_policy_expired(struct xfrm_policy *pol, int dir, int hard, u32 pid);
-extern int km_report(u8 proto, struct xfrm_selector *sel, xfrm_address_t *addr);
+extern int km_report(struct net *net, u8 proto, struct xfrm_selector *sel, xfrm_address_t *addr);
 
 extern void xfrm_input_init(void);
 extern int xfrm_parse_spi(struct sk_buff *skb, u8 nexthdr, __be32 *spi, __be32 *seq);
@@ -1497,18 +1521,20 @@ static inline int xfrm_policy_id2dir(u32 index)
         return index & 7;
 }
 
-static inline int xfrm_aevent_is_on(void)
+#ifdef CONFIG_XFRM
+static inline int xfrm_aevent_is_on(struct net *net)
 {
         struct sock *nlsk;
         int ret = 0;
 
         rcu_read_lock();
-        nlsk = rcu_dereference(xfrm_nl);
+        nlsk = rcu_dereference(net->xfrm.nlsk);
         if (nlsk)
                 ret = netlink_has_listeners(nlsk, XFRMNLGRP_AEVENTS);
         rcu_read_unlock();
         return ret;
 }
+#endif
 
 static inline int xfrm_alg_len(struct xfrm_algo *alg)
 {
@@ -1536,9 +1562,11 @@ static inline void xfrm_states_delete(struct xfrm_state **states, int n)
 }
 #endif
 
+#ifdef CONFIG_XFRM
 static inline struct xfrm_state *xfrm_input_state(struct sk_buff *skb)
 {
         return skb->sp->xvec[skb->sp->len - 1];
 }
+#endif
 
 #endif  /* _NET_XFRM_H */